almost finished

Facebook/Authentication/AccessToken.php

@@ -0,0 +1,160 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\Authentication;
+
+/**
+ * Class AccessToken
+ *
+ * @package Facebook
+ */
+class AccessToken
+{
+    /**
+     * The access token value.
+     *
+     * @var string
+     */
+    protected $value = '';
+
+    /**
+     * Date when token expires.
+     *
+     * @var \DateTime|null
+     */
+    protected $expiresAt;
+
+    /**
+     * Create a new access token entity.
+     *
+     * @param string $accessToken
+     * @param int    $expiresAt
+     */
+    public function __construct($accessToken, $expiresAt = 0)
+    {
+        $this->value = $accessToken;
+        if ($expiresAt) {
+            $this->setExpiresAtFromTimeStamp($expiresAt);
+        }
+    }
+
+    /**
+     * Generate an app secret proof to sign a request to Graph.
+     *
+     * @param string $appSecret The app secret.
+     *
+     * @return string
+     */
+    public function getAppSecretProof($appSecret)
+    {
+        return hash_hmac('sha256', $this->value, $appSecret);
+    }
+
+    /**
+     * Getter for expiresAt.
+     *
+     * @return \DateTime|null
+     */
+    public function getExpiresAt()
+    {
+        return $this->expiresAt;
+    }
+
+    /**
+     * Determines whether or not this is an app access token.
+     *
+     * @return bool
+     */
+    public function isAppAccessToken()
+    {
+        return strpos($this->value, '|') !== false;
+    }
+
+    /**
+     * Determines whether or not this is a long-lived token.
+     *
+     * @return bool
+     */
+    public function isLongLived()
+    {
+        if ($this->expiresAt) {
+            return $this->expiresAt->getTimestamp() > time() + (60 * 60 * 2);
+        }
+
+        if ($this->isAppAccessToken()) {
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * Checks the expiration of the access token.
+     *
+     * @return boolean|null
+     */
+    public function isExpired()
+    {
+        if ($this->getExpiresAt() instanceof \DateTime) {
+            return $this->getExpiresAt()->getTimestamp() < time();
+        }
+
+        if ($this->isAppAccessToken()) {
+            return false;
+        }
+
+        return null;
+    }
+
+    /**
+     * Returns the access token as a string.
+     *
+     * @return string
+     */
+    public function getValue()
+    {
+        return $this->value;
+    }
+
+    /**
+     * Returns the access token as a string.
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        return $this->getValue();
+    }
+
+    /**
+     * Setter for expires_at.
+     *
+     * @param int $timeStamp
+     */
+    protected function setExpiresAtFromTimeStamp($timeStamp)
+    {
+        $dt = new \DateTime();
+        $dt->setTimestamp($timeStamp);
+        $this->expiresAt = $dt;
+    }
+}

Facebook/Authentication/AccessTokenMetadata.php

@@ -0,0 +1,390 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\Authentication;
+
+use Facebook\Exceptions\FacebookSDKException;
+
+/**
+ * Class AccessTokenMetadata
+ *
+ * Represents metadata from an access token.
+ *
+ * @package Facebook
+ * @see     https://developers.facebook.com/docs/graph-api/reference/debug_token
+ */
+class AccessTokenMetadata
+{
+    /**
+     * The access token metadata.
+     *
+     * @var array
+     */
+    protected $metadata = [];
+
+    /**
+     * Properties that should be cast as DateTime objects.
+     *
+     * @var array
+     */
+    protected static $dateProperties = ['expires_at', 'issued_at'];
+
+    /**
+     * @param array $metadata
+     *
+     * @throws FacebookSDKException
+     */
+    public function __construct(array $metadata)
+    {
+        if (!isset($metadata['data'])) {
+            throw new FacebookSDKException('Unexpected debug token response data.', 401);
+        }
+
+        $this->metadata = $metadata['data'];
+
+        $this->castTimestampsToDateTime();
+    }
+
+    /**
+     * Returns a value from the metadata.
+     *
+     * @param string $field   The property to retrieve.
+     * @param mixed  $default The default to return if the property doesn't exist.
+     *
+     * @return mixed
+     */
+    public function getField($field, $default = null)
+    {
+        if (isset($this->metadata[$field])) {
+            return $this->metadata[$field];
+        }
+
+        return $default;
+    }
+
+    /**
+     * Returns a value from the metadata.
+     *
+     * @param string $field   The property to retrieve.
+     * @param mixed  $default The default to return if the property doesn't exist.
+     *
+     * @return mixed
+     *
+     * @deprecated 5.0.0 getProperty() has been renamed to getField()
+     * @todo v6: Remove this method
+     */
+    public function getProperty($field, $default = null)
+    {
+        return $this->getField($field, $default);
+    }
+
+    /**
+     * Returns a value from a child property in the metadata.
+     *
+     * @param string $parentField The parent property.
+     * @param string $field       The property to retrieve.
+     * @param mixed  $default     The default to return if the property doesn't exist.
+     *
+     * @return mixed
+     */
+    public function getChildProperty($parentField, $field, $default = null)
+    {
+        if (!isset($this->metadata[$parentField])) {
+            return $default;
+        }
+
+        if (!isset($this->metadata[$parentField][$field])) {
+            return $default;
+        }
+
+        return $this->metadata[$parentField][$field];
+    }
+
+    /**
+     * Returns a value from the error metadata.
+     *
+     * @param string $field   The property to retrieve.
+     * @param mixed  $default The default to return if the property doesn't exist.
+     *
+     * @return mixed
+     */
+    public function getErrorProperty($field, $default = null)
+    {
+        return $this->getChildProperty('error', $field, $default);
+    }
+
+    /**
+     * Returns a value from the "metadata" metadata. *Brain explodes*
+     *
+     * @param string $field   The property to retrieve.
+     * @param mixed  $default The default to return if the property doesn't exist.
+     *
+     * @return mixed
+     */
+    public function getMetadataProperty($field, $default = null)
+    {
+        return $this->getChildProperty('metadata', $field, $default);
+    }
+
+    /**
+     * The ID of the application this access token is for.
+     *
+     * @return string|null
+     */
+    public function getAppId()
+    {
+        return $this->getField('app_id');
+    }
+
+    /**
+     * Name of the application this access token is for.
+     *
+     * @return string|null
+     */
+    public function getApplication()
+    {
+        return $this->getField('application');
+    }
+
+    /**
+     * Any error that a request to the graph api
+     * would return due to the access token.
+     *
+     * @return bool|null
+     */
+    public function isError()
+    {
+        return $this->getField('error') !== null;
+    }
+
+    /**
+     * The error code for the error.
+     *
+     * @return int|null
+     */
+    public function getErrorCode()
+    {
+        return $this->getErrorProperty('code');
+    }
+
+    /**
+     * The error message for the error.
+     *
+     * @return string|null
+     */
+    public function getErrorMessage()
+    {
+        return $this->getErrorProperty('message');
+    }
+
+    /**
+     * The error subcode for the error.
+     *
+     * @return int|null
+     */
+    public function getErrorSubcode()
+    {
+        return $this->getErrorProperty('subcode');
+    }
+
+    /**
+     * DateTime when this access token expires.
+     *
+     * @return \DateTime|null
+     */
+    public function getExpiresAt()
+    {
+        return $this->getField('expires_at');
+    }
+
+    /**
+     * Whether the access token is still valid or not.
+     *
+     * @return boolean|null
+     */
+    public function getIsValid()
+    {
+        return $this->getField('is_valid');
+    }
+
+    /**
+     * DateTime when this access token was issued.
+     *
+     * Note that the issued_at field is not returned
+     * for short-lived access tokens.
+     *
+     * @see https://developers.facebook.com/docs/facebook-login/access-tokens#debug
+     *
+     * @return \DateTime|null
+     */
+    public function getIssuedAt()
+    {
+        return $this->getField('issued_at');
+    }
+
+    /**
+     * General metadata associated with the access token.
+     * Can contain data like 'sso', 'auth_type', 'auth_nonce'.
+     *
+     * @return array|null
+     */
+    public function getMetadata()
+    {
+        return $this->getField('metadata');
+    }
+
+    /**
+     * The 'sso' child property from the 'metadata' parent property.
+     *
+     * @return string|null
+     */
+    public function getSso()
+    {
+        return $this->getMetadataProperty('sso');
+    }
+
+    /**
+     * The 'auth_type' child property from the 'metadata' parent property.
+     *
+     * @return string|null
+     */
+    public function getAuthType()
+    {
+        return $this->getMetadataProperty('auth_type');
+    }
+
+    /**
+     * The 'auth_nonce' child property from the 'metadata' parent property.
+     *
+     * @return string|null
+     */
+    public function getAuthNonce()
+    {
+        return $this->getMetadataProperty('auth_nonce');
+    }
+
+    /**
+     * For impersonated access tokens, the ID of
+     * the page this token contains.
+     *
+     * @return string|null
+     */
+    public function getProfileId()
+    {
+        return $this->getField('profile_id');
+    }
+
+    /**
+     * List of permissions that the user has granted for
+     * the app in this access token.
+     *
+     * @return array
+     */
+    public function getScopes()
+    {
+        return $this->getField('scopes');
+    }
+
+    /**
+     * The ID of the user this access token is for.
+     *
+     * @return string|null
+     */
+    public function getUserId()
+    {
+        return $this->getField('user_id');
+    }
+
+    /**
+     * Ensures the app ID from the access token
+     * metadata is what we expect.
+     *
+     * @param string $appId
+     *
+     * @throws FacebookSDKException
+     */
+    public function validateAppId($appId)
+    {
+        if ($this->getAppId() !== $appId) {
+            throw new FacebookSDKException('Access token metadata contains unexpected app ID.', 401);
+        }
+    }
+
+    /**
+     * Ensures the user ID from the access token
+     * metadata is what we expect.
+     *
+     * @param string $userId
+     *
+     * @throws FacebookSDKException
+     */
+    public function validateUserId($userId)
+    {
+        if ($this->getUserId() !== $userId) {
+            throw new FacebookSDKException('Access token metadata contains unexpected user ID.', 401);
+        }
+    }
+
+    /**
+     * Ensures the access token has not expired yet.
+     *
+     * @throws FacebookSDKException
+     */
+    public function validateExpiration()
+    {
+        if (!$this->getExpiresAt() instanceof \DateTime) {
+            return;
+        }
+
+        if ($this->getExpiresAt()->getTimestamp() < time()) {
+            throw new FacebookSDKException('Inspection of access token metadata shows that the access token has expired.', 401);
+        }
+    }
+
+    /**
+     * Converts a unix timestamp into a DateTime entity.
+     *
+     * @param int $timestamp
+     *
+     * @return \DateTime
+     */
+    private function convertTimestampToDateTime($timestamp)
+    {
+        $dt = new \DateTime();
+        $dt->setTimestamp($timestamp);
+
+        return $dt;
+    }
+
+    /**
+     * Casts the unix timestamps as DateTime entities.
+     */
+    private function castTimestampsToDateTime()
+    {
+        foreach (static::$dateProperties as $key) {
+            if (isset($this->metadata[$key])) {
+                $this->metadata[$key] = $this->convertTimestampToDateTime($this->metadata[$key]);
+            }
+        }
+    }
+}

Facebook/Authentication/OAuth2Client.php

@@ -0,0 +1,292 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\Authentication;
+
+use Facebook\Facebook;
+use Facebook\FacebookApp;
+use Facebook\FacebookRequest;
+use Facebook\FacebookResponse;
+use Facebook\FacebookClient;
+use Facebook\Exceptions\FacebookResponseException;
+use Facebook\Exceptions\FacebookSDKException;
+
+/**
+ * Class OAuth2Client
+ *
+ * @package Facebook
+ */
+class OAuth2Client
+{
+    /**
+     * @const string The base authorization URL.
+     */
+    const BASE_AUTHORIZATION_URL = 'https://www.facebook.com';
+
+    /**
+     * The FacebookApp entity.
+     *
+     * @var FacebookApp
+     */
+    protected $app;
+
+    /**
+     * The Facebook client.
+     *
+     * @var FacebookClient
+     */
+    protected $client;
+
+    /**
+     * The version of the Graph API to use.
+     *
+     * @var string
+     */
+    protected $graphVersion;
+
+    /**
+     * The last request sent to Graph.
+     *
+     * @var FacebookRequest|null
+     */
+    protected $lastRequest;
+
+    /**
+     * @param FacebookApp    $app
+     * @param FacebookClient $client
+     * @param string|null    $graphVersion The version of the Graph API to use.
+     */
+    public function __construct(FacebookApp $app, FacebookClient $client, $graphVersion = null)
+    {
+        $this->app = $app;
+        $this->client = $client;
+        $this->graphVersion = $graphVersion ?: Facebook::DEFAULT_GRAPH_VERSION;
+    }
+
+    /**
+     * Returns the last FacebookRequest that was sent.
+     * Useful for debugging and testing.
+     *
+     * @return FacebookRequest|null
+     */
+    public function getLastRequest()
+    {
+        return $this->lastRequest;
+    }
+
+    /**
+     * Get the metadata associated with the access token.
+     *
+     * @param AccessToken|string $accessToken The access token to debug.
+     *
+     * @return AccessTokenMetadata
+     */
+    public function debugToken($accessToken)
+    {
+        $accessToken = $accessToken instanceof AccessToken ? $accessToken->getValue() : $accessToken;
+        $params = ['input_token' => $accessToken];
+
+        $this->lastRequest = new FacebookRequest(
+            $this->app,
+            $this->app->getAccessToken(),
+            'GET',
+            '/debug_token',
+            $params,
+            null,
+            $this->graphVersion
+        );
+        $response = $this->client->sendRequest($this->lastRequest);
+        $metadata = $response->getDecodedBody();
+
+        return new AccessTokenMetadata($metadata);
+    }
+
+    /**
+     * Generates an authorization URL to begin the process of authenticating a user.
+     *
+     * @param string $redirectUrl The callback URL to redirect to.
+     * @param array  $scope       An array of permissions to request.
+     * @param string $state       The CSPRNG-generated CSRF value.
+     * @param array  $params      An array of parameters to generate URL.
+     * @param string $separator   The separator to use in http_build_query().
+     *
+     * @return string
+     */
+    public function getAuthorizationUrl($redirectUrl, $state, array $scope = [], array $params = [], $separator = '&')
+    {
+        $params += [
+            'client_id' => $this->app->getId(),
+            'state' => $state,
+            'response_type' => 'code',
+            'sdk' => 'php-sdk-' . Facebook::VERSION,
+            'redirect_uri' => $redirectUrl,
+            'scope' => implode(',', $scope)
+        ];
+
+        return static::BASE_AUTHORIZATION_URL . '/' . $this->graphVersion . '/dialog/oauth?' . http_build_query($params, null, $separator);
+    }
+
+    /**
+     * Get a valid access token from a code.
+     *
+     * @param string $code
+     * @param string $redirectUri
+     *
+     * @return AccessToken
+     *
+     * @throws FacebookSDKException
+     */
+    public function getAccessTokenFromCode($code, $redirectUri = '')
+    {
+        $params = [
+            'code' => $code,
+            'redirect_uri' => $redirectUri,
+        ];
+
+        return $this->requestAnAccessToken($params);
+    }
+
+    /**
+     * Exchanges a short-lived access token with a long-lived access token.
+     *
+     * @param AccessToken|string $accessToken
+     *
+     * @return AccessToken
+     *
+     * @throws FacebookSDKException
+     */
+    public function getLongLivedAccessToken($accessToken)
+    {
+        $accessToken = $accessToken instanceof AccessToken ? $accessToken->getValue() : $accessToken;
+        $params = [
+            'grant_type' => 'fb_exchange_token',
+            'fb_exchange_token' => $accessToken,
+        ];
+
+        return $this->requestAnAccessToken($params);
+    }
+
+    /**
+     * Get a valid code from an access token.
+     *
+     * @param AccessToken|string $accessToken
+     * @param string             $redirectUri
+     *
+     * @return AccessToken
+     *
+     * @throws FacebookSDKException
+     */
+    public function getCodeFromLongLivedAccessToken($accessToken, $redirectUri = '')
+    {
+        $params = [
+            'redirect_uri' => $redirectUri,
+        ];
+
+        $response = $this->sendRequestWithClientParams('/oauth/client_code', $params, $accessToken);
+        $data = $response->getDecodedBody();
+
+        if (!isset($data['code'])) {
+            throw new FacebookSDKException('Code was not returned from Graph.', 401);
+        }
+
+        return $data['code'];
+    }
+
+    /**
+     * Send a request to the OAuth endpoint.
+     *
+     * @param array $params
+     *
+     * @return AccessToken
+     *
+     * @throws FacebookSDKException
+     */
+    protected function requestAnAccessToken(array $params)
+    {
+        $response = $this->sendRequestWithClientParams('/oauth/access_token', $params);
+        $data = $response->getDecodedBody();
+
+        if (!isset($data['access_token'])) {
+            throw new FacebookSDKException('Access token was not returned from Graph.', 401);
+        }
+
+        // Graph returns two different key names for expiration time
+        // on the same endpoint. Doh! :/
+        $expiresAt = 0;
+        if (isset($data['expires'])) {
+            // For exchanging a short lived token with a long lived token.
+            // The expiration time in seconds will be returned as "expires".
+            $expiresAt = time() + $data['expires'];
+        } elseif (isset($data['expires_in'])) {
+            // For exchanging a code for a short lived access token.
+            // The expiration time in seconds will be returned as "expires_in".
+            // See: https://developers.facebook.com/docs/facebook-login/access-tokens#long-via-code
+            $expiresAt = time() + $data['expires_in'];
+        }
+
+        return new AccessToken($data['access_token'], $expiresAt);
+    }
+
+    /**
+     * Send a request to Graph with an app access token.
+     *
+     * @param string      $endpoint
+     * @param array       $params
+     * @param string|null $accessToken
+     *
+     * @return FacebookResponse
+     *
+     * @throws FacebookResponseException
+     */
+    protected function sendRequestWithClientParams($endpoint, array $params, $accessToken = null)
+    {
+        $params += $this->getClientParams();
+
+        $accessToken = $accessToken ?: $this->app->getAccessToken();
+
+        $this->lastRequest = new FacebookRequest(
+            $this->app,
+            $accessToken,
+            'GET',
+            $endpoint,
+            $params,
+            null,
+            $this->graphVersion
+        );
+
+        return $this->client->sendRequest($this->lastRequest);
+    }
+
+    /**
+     * Returns the client_* params for OAuth requests.
+     *
+     * @return array
+     */
+    protected function getClientParams()
+    {
+        return [
+            'client_id' => $this->app->getId(),
+            'client_secret' => $this->app->getSecret(),
+        ];
+    }
+}

Facebook/Exceptions/FacebookAuthenticationException.php

@@ -0,0 +1,33 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\Exceptions;
+
+/**
+ * Class FacebookAuthenticationException
+ *
+ * @package Facebook
+ */
+class FacebookAuthenticationException extends FacebookSDKException
+{
+}

Facebook/Exceptions/FacebookAuthorizationException.php

@@ -0,0 +1,33 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\Exceptions;
+
+/**
+ * Class FacebookAuthorizationException
+ *
+ * @package Facebook
+ */
+class FacebookAuthorizationException extends FacebookSDKException
+{
+}

Facebook/Exceptions/FacebookClientException.php

@@ -0,0 +1,33 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\Exceptions;
+
+/**
+ * Class FacebookClientException
+ *
+ * @package Facebook
+ */
+class FacebookClientException extends FacebookSDKException
+{
+}

Facebook/Exceptions/FacebookOtherException.php

@@ -0,0 +1,33 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\Exceptions;
+
+/**
+ * Class FacebookOtherException
+ *
+ * @package Facebook
+ */
+class FacebookOtherException extends FacebookSDKException
+{
+}

Facebook/Exceptions/FacebookResponseException.php

@@ -0,0 +1,208 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\Exceptions;
+
+use Facebook\FacebookResponse;
+
+/**
+ * Class FacebookResponseException
+ *
+ * @package Facebook
+ */
+class FacebookResponseException extends FacebookSDKException
+{
+    /**
+     * @var FacebookResponse The response that threw the exception.
+     */
+    protected $response;
+
+    /**
+     * @var array Decoded response.
+     */
+    protected $responseData;
+
+    /**
+     * Creates a FacebookResponseException.
+     *
+     * @param FacebookResponse     $response          The response that threw the exception.
+     * @param FacebookSDKException $previousException The more detailed exception.
+     */
+    public function __construct(FacebookResponse $response, FacebookSDKException $previousException = null)
+    {
+        $this->response = $response;
+        $this->responseData = $response->getDecodedBody();
+
+        $errorMessage = $this->get('message', 'Unknown error from Graph.');
+        $errorCode = $this->get('code', -1);
+
+        parent::__construct($errorMessage, $errorCode, $previousException);
+    }
+
+    /**
+     * A factory for creating the appropriate exception based on the response from Graph.
+     *
+     * @param FacebookResponse $response The response that threw the exception.
+     *
+     * @return FacebookResponseException
+     */
+    public static function create(FacebookResponse $response)
+    {
+        $data = $response->getDecodedBody();
+
+        if (!isset($data['error']['code']) && isset($data['code'])) {
+            $data = ['error' => $data];
+        }
+
+        $code = isset($data['error']['code']) ? $data['error']['code'] : null;
+        $message = isset($data['error']['message']) ? $data['error']['message'] : 'Unknown error from Graph.';
+
+        $previousException = null;
+
+        if (isset($data['error']['error_subcode'])) {
+            switch ($data['error']['error_subcode']) {
+                // Other authentication issues
+                case 458:
+                case 459:
+                case 460:
+                case 463:
+                case 464:
+                case 467:
+                    return new static($response, new FacebookAuthenticationException($message, $code));
+            }
+        }
+
+        switch ($code) {
+            // Login status or token expired, revoked, or invalid
+            case 100:
+            case 102:
+            case 190:
+                return new static($response, new FacebookAuthenticationException($message, $code));
+
+            // Server issue, possible downtime
+            case 1:
+            case 2:
+                return new static($response, new FacebookServerException($message, $code));
+
+            // API Throttling
+            case 4:
+            case 17:
+            case 341:
+                return new static($response, new FacebookThrottleException($message, $code));
+
+            // Duplicate Post
+            case 506:
+                return new static($response, new FacebookClientException($message, $code));
+        }
+
+        // Missing Permissions
+        if ($code == 10 || ($code >= 200 && $code <= 299)) {
+            return new static($response, new FacebookAuthorizationException($message, $code));
+        }
+
+        // OAuth authentication error
+        if (isset($data['error']['type']) && $data['error']['type'] === 'OAuthException') {
+            return new static($response, new FacebookAuthenticationException($message, $code));
+        }
+
+        // All others
+        return new static($response, new FacebookOtherException($message, $code));
+    }
+
+    /**
+     * Checks isset and returns that or a default value.
+     *
+     * @param string $key
+     * @param mixed  $default
+     *
+     * @return mixed
+     */
+    private function get($key, $default = null)
+    {
+        if (isset($this->responseData['error'][$key])) {
+            return $this->responseData['error'][$key];
+        }
+
+        return $default;
+    }
+
+    /**
+     * Returns the HTTP status code
+     *
+     * @return int
+     */
+    public function getHttpStatusCode()
+    {
+        return $this->response->getHttpStatusCode();
+    }
+
+    /**
+     * Returns the sub-error code
+     *
+     * @return int
+     */
+    public function getSubErrorCode()
+    {
+        return $this->get('error_subcode', -1);
+    }
+
+    /**
+     * Returns the error type
+     *
+     * @return string
+     */
+    public function getErrorType()
+    {
+        return $this->get('type', '');
+    }
+
+    /**
+     * Returns the raw response used to create the exception.
+     *
+     * @return string
+     */
+    public function getRawResponse()
+    {
+        return $this->response->getBody();
+    }
+
+    /**
+     * Returns the decoded response used to create the exception.
+     *
+     * @return array
+     */
+    public function getResponseData()
+    {
+        return $this->responseData;
+    }
+
+    /**
+     * Returns the response entity used to create the exception.
+     *
+     * @return FacebookResponse
+     */
+    public function getResponse()
+    {
+        return $this->response;
+    }
+}

Facebook/Exceptions/FacebookSDKException.php

@@ -0,0 +1,33 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\Exceptions;
+
+/**
+ * Class FacebookSDKException
+ *
+ * @package Facebook
+ */
+class FacebookSDKException extends \Exception
+{
+}

Facebook/Exceptions/FacebookServerException.php

@@ -0,0 +1,33 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\Exceptions;
+
+/**
+ * Class FacebookServerException
+ *
+ * @package Facebook
+ */
+class FacebookServerException extends FacebookSDKException
+{
+}

Facebook/Exceptions/FacebookThrottleException.php

@@ -0,0 +1,33 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\Exceptions;
+
+/**
+ * Class FacebookThrottleException
+ *
+ * @package Facebook
+ */
+class FacebookThrottleException extends FacebookSDKException
+{
+}

Facebook/Facebook.php

@@ -0,0 +1,589 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook;
+
+use Facebook\Authentication\AccessToken;
+use Facebook\Authentication\OAuth2Client;
+use Facebook\FileUpload\FacebookFile;
+use Facebook\FileUpload\FacebookVideo;
+use Facebook\GraphNodes\GraphEdge;
+use Facebook\Url\UrlDetectionInterface;
+use Facebook\Url\FacebookUrlDetectionHandler;
+use Facebook\PseudoRandomString\PseudoRandomStringGeneratorInterface;
+use Facebook\PseudoRandomString\McryptPseudoRandomStringGenerator;
+use Facebook\PseudoRandomString\OpenSslPseudoRandomStringGenerator;
+use Facebook\PseudoRandomString\UrandomPseudoRandomStringGenerator;
+use Facebook\HttpClients\FacebookHttpClientInterface;
+use Facebook\HttpClients\FacebookCurlHttpClient;
+use Facebook\HttpClients\FacebookStreamHttpClient;
+use Facebook\HttpClients\FacebookGuzzleHttpClient;
+use Facebook\PersistentData\PersistentDataInterface;
+use Facebook\PersistentData\FacebookSessionPersistentDataHandler;
+use Facebook\PersistentData\FacebookMemoryPersistentDataHandler;
+use Facebook\Helpers\FacebookCanvasHelper;
+use Facebook\Helpers\FacebookJavaScriptHelper;
+use Facebook\Helpers\FacebookPageTabHelper;
+use Facebook\Helpers\FacebookRedirectLoginHelper;
+use Facebook\Exceptions\FacebookSDKException;
+
+/**
+ * Class Facebook
+ *
+ * @package Facebook
+ */
+class Facebook
+{
+    /**
+     * @const string Version number of the Facebook PHP SDK.
+     */
+    const VERSION = '5.0.0';
+
+    /**
+     * @const string Default Graph API version for requests.
+     */
+    const DEFAULT_GRAPH_VERSION = 'v2.4';
+
+    /**
+     * @const string The name of the environment variable that contains the app ID.
+     */
+    const APP_ID_ENV_NAME = 'FACEBOOK_APP_ID';
+
+    /**
+     * @const string The name of the environment variable that contains the app secret.
+     */
+    const APP_SECRET_ENV_NAME = 'FACEBOOK_APP_SECRET';
+
+    /**
+     * @var FacebookApp The FacebookApp entity.
+     */
+    protected $app;
+
+    /**
+     * @var FacebookClient The Facebook client service.
+     */
+    protected $client;
+
+    /**
+     * @var OAuth2Client The OAuth 2.0 client service.
+     */
+    protected $oAuth2Client;
+
+    /**
+     * @var UrlDetectionInterface|null The URL detection handler.
+     */
+    protected $urlDetectionHandler;
+
+    /**
+     * @var PseudoRandomStringGeneratorInterface|null The cryptographically secure pseudo-random string generator.
+     */
+    protected $pseudoRandomStringGenerator;
+
+    /**
+     * @var AccessToken|null The default access token to use with requests.
+     */
+    protected $defaultAccessToken;
+
+    /**
+     * @var string|null The default Graph version we want to use.
+     */
+    protected $defaultGraphVersion;
+
+    /**
+     * @var PersistentDataInterface|null The persistent data handler.
+     */
+    protected $persistentDataHandler;
+
+    /**
+     * @var FacebookResponse|FacebookBatchResponse|null Stores the last request made to Graph.
+     */
+    protected $lastResponse;
+
+    /**
+     * Instantiates a new Facebook super-class object.
+     *
+     * @param array $config
+     *
+     * @throws FacebookSDKException
+     */
+    public function __construct(array $config = [])
+    {
+        $appId = isset($config['app_id']) ? $config['app_id'] : getenv(static::APP_ID_ENV_NAME);
+        if (!$appId) {
+            throw new FacebookSDKException('Required "app_id" key not supplied in config and could not find fallback environment variable "' . static::APP_ID_ENV_NAME . '"');
+        }
+
+        $appSecret = isset($config['app_secret']) ? $config['app_secret'] : getenv(static::APP_SECRET_ENV_NAME);
+        if (!$appSecret) {
+            throw new FacebookSDKException('Required "app_secret" key not supplied in config and could not find fallback environment variable "' . static::APP_SECRET_ENV_NAME . '"');
+        }
+
+        $this->app = new FacebookApp($appId, $appSecret);
+
+        $httpClientHandler = null;
+        if (isset($config['http_client_handler'])) {
+            if ($config['http_client_handler'] instanceof FacebookHttpClientInterface) {
+                $httpClientHandler = $config['http_client_handler'];
+            } elseif ($config['http_client_handler'] === 'curl') {
+                $httpClientHandler = new FacebookCurlHttpClient();
+            } elseif ($config['http_client_handler'] === 'stream') {
+                $httpClientHandler = new FacebookStreamHttpClient();
+            } elseif ($config['http_client_handler'] === 'guzzle') {
+                $httpClientHandler = new FacebookGuzzleHttpClient();
+            } else {
+                throw new \InvalidArgumentException('The http_client_handler must be set to "curl", "stream", "guzzle", or be an instance of Facebook\HttpClients\FacebookHttpClientInterface');
+            }
+        }
+
+        $enableBeta = isset($config['enable_beta_mode']) && $config['enable_beta_mode'] === true;
+        $this->client = new FacebookClient($httpClientHandler, $enableBeta);
+
+        if (isset($config['url_detection_handler'])) {
+            if ($config['url_detection_handler'] instanceof UrlDetectionInterface) {
+                $this->urlDetectionHandler = $config['url_detection_handler'];
+            } else {
+                throw new \InvalidArgumentException('The url_detection_handler must be an instance of Facebook\Url\UrlDetectionInterface');
+            }
+        }
+
+        if (isset($config['pseudo_random_string_generator'])) {
+            if ($config['pseudo_random_string_generator'] instanceof PseudoRandomStringGeneratorInterface) {
+                $this->pseudoRandomStringGenerator = $config['pseudo_random_string_generator'];
+            } elseif ($config['pseudo_random_string_generator'] === 'mcrypt') {
+                $this->pseudoRandomStringGenerator = new McryptPseudoRandomStringGenerator();
+            } elseif ($config['pseudo_random_string_generator'] === 'openssl') {
+                $this->pseudoRandomStringGenerator = new OpenSslPseudoRandomStringGenerator();
+            } elseif ($config['pseudo_random_string_generator'] === 'urandom') {
+                $this->pseudoRandomStringGenerator = new UrandomPseudoRandomStringGenerator();
+            } else {
+                throw new \InvalidArgumentException('The pseudo_random_string_generator must be set to "mcrypt", "openssl", or "urandom", or be an instance of Facebook\PseudoRandomString\PseudoRandomStringGeneratorInterface');
+            }
+        }
+
+        if (isset($config['persistent_data_handler'])) {
+            if ($config['persistent_data_handler'] instanceof PersistentDataInterface) {
+                $this->persistentDataHandler = $config['persistent_data_handler'];
+            } elseif ($config['persistent_data_handler'] === 'session') {
+                $this->persistentDataHandler = new FacebookSessionPersistentDataHandler();
+            } elseif ($config['persistent_data_handler'] === 'memory') {
+                $this->persistentDataHandler = new FacebookMemoryPersistentDataHandler();
+            } else {
+                throw new \InvalidArgumentException('The persistent_data_handler must be set to "session", "memory", or be an instance of Facebook\PersistentData\PersistentDataInterface');
+            }
+        }
+
+        if (isset($config['default_access_token'])) {
+            $this->setDefaultAccessToken($config['default_access_token']);
+        }
+
+        if (isset($config['default_graph_version'])) {
+            $this->defaultGraphVersion = $config['default_graph_version'];
+        } else {
+            // @todo v6: Throw an InvalidArgumentException if "default_graph_version" is not set
+            $this->defaultGraphVersion = static::DEFAULT_GRAPH_VERSION;
+        }
+    }
+
+    /**
+     * Returns the FacebookApp entity.
+     *
+     * @return FacebookApp
+     */
+    public function getApp()
+    {
+        return $this->app;
+    }
+
+    /**
+     * Returns the FacebookClient service.
+     *
+     * @return FacebookClient
+     */
+    public function getClient()
+    {
+        return $this->client;
+    }
+
+    /**
+     * Returns the OAuth 2.0 client service.
+     *
+     * @return OAuth2Client
+     */
+    public function getOAuth2Client()
+    {
+        if (!$this->oAuth2Client instanceof OAuth2Client) {
+            $app = $this->getApp();
+            $client = $this->getClient();
+            $this->oAuth2Client = new OAuth2Client($app, $client, $this->defaultGraphVersion);
+        }
+
+        return $this->oAuth2Client;
+    }
+
+    /**
+     * Returns the last response returned from Graph.
+     *
+     * @return FacebookResponse|FacebookBatchResponse|null
+     */
+    public function getLastResponse()
+    {
+        return $this->lastResponse;
+    }
+
+    /**
+     * Returns the URL detection handler.
+     *
+     * @return UrlDetectionInterface
+     */
+    public function getUrlDetectionHandler()
+    {
+        if (!$this->urlDetectionHandler instanceof UrlDetectionInterface) {
+            $this->urlDetectionHandler = new FacebookUrlDetectionHandler();
+        }
+
+        return $this->urlDetectionHandler;
+    }
+
+    /**
+     * Returns the default AccessToken entity.
+     *
+     * @return AccessToken|null
+     */
+    public function getDefaultAccessToken()
+    {
+        return $this->defaultAccessToken;
+    }
+
+    /**
+     * Sets the default access token to use with requests.
+     *
+     * @param AccessToken|string $accessToken The access token to save.
+     *
+     * @throws \InvalidArgumentException
+     */
+    public function setDefaultAccessToken($accessToken)
+    {
+        if (is_string($accessToken)) {
+            $this->defaultAccessToken = new AccessToken($accessToken);
+
+            return;
+        }
+
+        if ($accessToken instanceof AccessToken) {
+            $this->defaultAccessToken = $accessToken;
+
+            return;
+        }
+
+        throw new \InvalidArgumentException('The default access token must be of type "string" or Facebook\AccessToken');
+    }
+
+    /**
+     * Returns the default Graph version.
+     *
+     * @return string
+     */
+    public function getDefaultGraphVersion()
+    {
+        return $this->defaultGraphVersion;
+    }
+
+    /**
+     * Returns the redirect login helper.
+     *
+     * @return FacebookRedirectLoginHelper
+     */
+    public function getRedirectLoginHelper()
+    {
+        return new FacebookRedirectLoginHelper(
+            $this->getOAuth2Client(),
+            $this->persistentDataHandler,
+            $this->urlDetectionHandler,
+            $this->pseudoRandomStringGenerator
+        );
+    }
+
+    /**
+     * Returns the JavaScript helper.
+     *
+     * @return FacebookJavaScriptHelper
+     */
+    public function getJavaScriptHelper()
+    {
+        return new FacebookJavaScriptHelper($this->app, $this->client, $this->defaultGraphVersion);
+    }
+
+    /**
+     * Returns the canvas helper.
+     *
+     * @return FacebookCanvasHelper
+     */
+    public function getCanvasHelper()
+    {
+        return new FacebookCanvasHelper($this->app, $this->client, $this->defaultGraphVersion);
+    }
+
+    /**
+     * Returns the page tab helper.
+     *
+     * @return FacebookPageTabHelper
+     */
+    public function getPageTabHelper()
+    {
+        return new FacebookPageTabHelper($this->app, $this->client, $this->defaultGraphVersion);
+    }
+
+    /**
+     * Sends a GET request to Graph and returns the result.
+     *
+     * @param string                  $endpoint
+     * @param AccessToken|string|null $accessToken
+     * @param string|null             $eTag
+     * @param string|null             $graphVersion
+     *
+     * @return FacebookResponse
+     *
+     * @throws FacebookSDKException
+     */
+    public function get($endpoint, $accessToken = null, $eTag = null, $graphVersion = null)
+    {
+        return $this->sendRequest(
+            'GET',
+            $endpoint,
+            $params = [],
+            $accessToken,
+            $eTag,
+            $graphVersion
+        );
+    }
+
+    /**
+     * Sends a POST request to Graph and returns the result.
+     *
+     * @param string                  $endpoint
+     * @param array                   $params
+     * @param AccessToken|string|null $accessToken
+     * @param string|null             $eTag
+     * @param string|null             $graphVersion
+     *
+     * @return FacebookResponse
+     *
+     * @throws FacebookSDKException
+     */
+    public function post($endpoint, array $params = [], $accessToken = null, $eTag = null, $graphVersion = null)
+    {
+        return $this->sendRequest(
+            'POST',
+            $endpoint,
+            $params,
+            $accessToken,
+            $eTag,
+            $graphVersion
+        );
+    }
+
+    /**
+     * Sends a DELETE request to Graph and returns the result.
+     *
+     * @param string                  $endpoint
+     * @param array                   $params
+     * @param AccessToken|string|null $accessToken
+     * @param string|null             $eTag
+     * @param string|null             $graphVersion
+     *
+     * @return FacebookResponse
+     *
+     * @throws FacebookSDKException
+     */
+    public function delete($endpoint, array $params = [], $accessToken = null, $eTag = null, $graphVersion = null)
+    {
+        return $this->sendRequest(
+            'DELETE',
+            $endpoint,
+            $params,
+            $accessToken,
+            $eTag,
+            $graphVersion
+        );
+    }
+
+    /**
+     * Sends a request to Graph for the next page of results.
+     *
+     * @param GraphEdge $graphEdge The GraphEdge to paginate over.
+     *
+     * @return GraphEdge|null
+     *
+     * @throws FacebookSDKException
+     */
+    public function next(GraphEdge $graphEdge)
+    {
+        return $this->getPaginationResults($graphEdge, 'next');
+    }
+
+    /**
+     * Sends a request to Graph for the previous page of results.
+     *
+     * @param GraphEdge $graphEdge The GraphEdge to paginate over.
+     *
+     * @return GraphEdge|null
+     *
+     * @throws FacebookSDKException
+     */
+    public function previous(GraphEdge $graphEdge)
+    {
+        return $this->getPaginationResults($graphEdge, 'previous');
+    }
+
+    /**
+     * Sends a request to Graph for the next page of results.
+     *
+     * @param GraphEdge $graphEdge The GraphEdge to paginate over.
+     * @param string    $direction The direction of the pagination: next|previous.
+     *
+     * @return GraphEdge|null
+     *
+     * @throws FacebookSDKException
+     */
+    public function getPaginationResults(GraphEdge $graphEdge, $direction)
+    {
+        $paginationRequest = $graphEdge->getPaginationRequest($direction);
+        if (!$paginationRequest) {
+            return null;
+        }
+
+        $this->lastResponse = $this->client->sendRequest($paginationRequest);
+
+        // Keep the same GraphNode subclass
+        $subClassName = $graphEdge->getSubClassName();
+        $graphEdge = $this->lastResponse->getGraphEdge($subClassName, false);
+
+        return count($graphEdge) > 0 ? $graphEdge : null;
+    }
+
+    /**
+     * Sends a request to Graph and returns the result.
+     *
+     * @param string                  $method
+     * @param string                  $endpoint
+     * @param array                   $params
+     * @param AccessToken|string|null $accessToken
+     * @param string|null             $eTag
+     * @param string|null             $graphVersion
+     *
+     * @return FacebookResponse
+     *
+     * @throws FacebookSDKException
+     */
+    public function sendRequest($method, $endpoint, array $params = [], $accessToken = null, $eTag = null, $graphVersion = null)
+    {
+        $accessToken = $accessToken ?: $this->defaultAccessToken;
+        $graphVersion = $graphVersion ?: $this->defaultGraphVersion;
+        $request = $this->request($method, $endpoint, $params, $accessToken, $eTag, $graphVersion);
+
+        return $this->lastResponse = $this->client->sendRequest($request);
+    }
+
+    /**
+     * Sends a batched request to Graph and returns the result.
+     *
+     * @param array                   $requests
+     * @param AccessToken|string|null $accessToken
+     * @param string|null             $graphVersion
+     *
+     * @return FacebookBatchResponse
+     *
+     * @throws FacebookSDKException
+     */
+    public function sendBatchRequest(array $requests, $accessToken = null, $graphVersion = null)
+    {
+        $accessToken = $accessToken ?: $this->defaultAccessToken;
+        $graphVersion = $graphVersion ?: $this->defaultGraphVersion;
+        $batchRequest = new FacebookBatchRequest(
+            $this->app,
+            $requests,
+            $accessToken,
+            $graphVersion
+        );
+
+        return $this->lastResponse = $this->client->sendBatchRequest($batchRequest);
+    }
+
+    /**
+     * Instantiates a new FacebookRequest entity.
+     *
+     * @param string                  $method
+     * @param string                  $endpoint
+     * @param array                   $params
+     * @param AccessToken|string|null $accessToken
+     * @param string|null             $eTag
+     * @param string|null             $graphVersion
+     *
+     * @return FacebookRequest
+     *
+     * @throws FacebookSDKException
+     */
+    public function request($method, $endpoint, array $params = [], $accessToken = null, $eTag = null, $graphVersion = null)
+    {
+        $accessToken = $accessToken ?: $this->defaultAccessToken;
+        $graphVersion = $graphVersion ?: $this->defaultGraphVersion;
+
+        return new FacebookRequest(
+            $this->app,
+            $accessToken,
+            $method,
+            $endpoint,
+            $params,
+            $eTag,
+            $graphVersion
+        );
+    }
+
+    /**
+     * Factory to create FacebookFile's.
+     *
+     * @param string $pathToFile
+     *
+     * @return FacebookFile
+     *
+     * @throws FacebookSDKException
+     */
+    public function fileToUpload($pathToFile)
+    {
+        return new FacebookFile($pathToFile);
+    }
+
+    /**
+     * Factory to create FacebookVideo's.
+     *
+     * @param string $pathToFile
+     *
+     * @return FacebookVideo
+     *
+     * @throws FacebookSDKException
+     */
+    public function videoToUpload($pathToFile)
+    {
+        return new FacebookVideo($pathToFile);
+    }
+}

Facebook/FacebookApp.php

@@ -0,0 +1,101 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook;
+
+use Facebook\Authentication\AccessToken;
+
+class FacebookApp implements \Serializable
+{
+    /**
+     * @var string The app ID.
+     */
+    protected $id;
+
+    /**
+     * @var string The app secret.
+     */
+    protected $secret;
+
+    /**
+     * @param string $id
+     * @param string $secret
+     */
+    public function __construct($id, $secret)
+    {
+        $this->id = $id;
+        $this->secret = $secret;
+    }
+
+    /**
+     * Returns the app ID.
+     *
+     * @return string
+     */
+    public function getId()
+    {
+        return $this->id;
+    }
+
+    /**
+     * Returns the app secret.
+     *
+     * @return string
+     */
+    public function getSecret()
+    {
+        return $this->secret;
+    }
+
+    /**
+     * Returns an app access token.
+     *
+     * @return AccessToken
+     */
+    public function getAccessToken()
+    {
+        return new AccessToken($this->id . '|' . $this->secret);
+    }
+
+    /**
+     * Serializes the FacebookApp entity as a string.
+     *
+     * @return string
+     */
+    public function serialize()
+    {
+        return serialize([$this->id, $this->secret]);
+    }
+
+    /**
+     * Unserializes a string as a FacebookApp entity.
+     *
+     * @param string $serialized
+     */
+    public function unserialize($serialized)
+    {
+        list($id, $secret) = unserialize($serialized);
+
+        $this->__construct($id, $secret);
+    }
+}

Facebook/FacebookBatchRequest.php

@@ -0,0 +1,303 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook;
+
+use ArrayIterator;
+use IteratorAggregate;
+use ArrayAccess;
+use Facebook\Authentication\AccessToken;
+use Facebook\Exceptions\FacebookSDKException;
+
+/**
+ * Class BatchRequest
+ *
+ * @package Facebook
+ */
+class FacebookBatchRequest extends FacebookRequest implements IteratorAggregate, ArrayAccess
+{
+    /**
+     * @var array An array of FacebookRequest entities to send.
+     */
+    protected $requests;
+
+    /**
+     * @var array An array of files to upload.
+     */
+    protected $attachedFiles;
+
+    /**
+     * Creates a new Request entity.
+     *
+     * @param FacebookApp|null        $app
+     * @param array                   $requests
+     * @param AccessToken|string|null $accessToken
+     * @param string|null             $graphVersion
+     */
+    public function __construct(FacebookApp $app = null, array $requests = [], $accessToken = null, $graphVersion = null)
+    {
+        parent::__construct($app, $accessToken, 'POST', '', [], null, $graphVersion);
+
+        $this->add($requests);
+    }
+
+    /**
+     * A a new request to the array.
+     *
+     * @param FacebookRequest|array $request
+     * @param string|null           $name
+     *
+     * @return FacebookBatchRequest
+     *
+     * @throws \InvalidArgumentException
+     */
+    public function add($request, $name = null)
+    {
+        if (is_array($request)) {
+            foreach ($request as $key => $req) {
+                $this->add($req, $key);
+            }
+
+            return $this;
+        }
+
+        if (!$request instanceof FacebookRequest) {
+            throw new \InvalidArgumentException('Argument for add() must be of type array or FacebookRequest.');
+        }
+
+        $this->addFallbackDefaults($request);
+        $requestToAdd = [
+            'name' => $name,
+            'request' => $request,
+        ];
+
+        // File uploads
+        $attachedFiles = $this->extractFileAttachments($request);
+        if ($attachedFiles) {
+            $requestToAdd['attached_files'] = $attachedFiles;
+        }
+        $this->requests[] = $requestToAdd;
+
+        return $this;
+    }
+
+    /**
+     * Ensures that the FacebookApp and access token fall back when missing.
+     *
+     * @param FacebookRequest $request
+     *
+     * @throws FacebookSDKException
+     */
+    public function addFallbackDefaults(FacebookRequest $request)
+    {
+        if (!$request->getApp()) {
+            $app = $this->getApp();
+            if (!$app) {
+                throw new FacebookSDKException('Missing FacebookApp on FacebookRequest and no fallback detected on FacebookBatchRequest.');
+            }
+            $request->setApp($app);
+        }
+
+        if (!$request->getAccessToken()) {
+            $accessToken = $this->getAccessToken();
+            if (!$accessToken) {
+                throw new FacebookSDKException('Missing access token on FacebookRequest and no fallback detected on FacebookBatchRequest.');
+            }
+            $request->setAccessToken($accessToken);
+        }
+    }
+
+    /**
+     * Extracts the files from a request.
+     *
+     * @param FacebookRequest $request
+     *
+     * @return string|null
+     *
+     * @throws FacebookSDKException
+     */
+    public function extractFileAttachments(FacebookRequest $request)
+    {
+        if (!$request->containsFileUploads()) {
+            return null;
+        }
+
+        $files = $request->getFiles();
+        $fileNames = [];
+        foreach ($files as $file) {
+            $fileName = uniqid();
+            $this->addFile($fileName, $file);
+            $fileNames[] = $fileName;
+        }
+
+        $request->resetFiles();
+
+        // @TODO Does Graph support multiple uploads on one endpoint?
+        return implode(',', $fileNames);
+    }
+
+    /**
+     * Return the FacebookRequest entities.
+     *
+     * @return array
+     */
+    public function getRequests()
+    {
+        return $this->requests;
+    }
+
+    /**
+     * Prepares the requests to be sent as a batch request.
+     *
+     * @return string
+     */
+    public function prepareRequestsForBatch()
+    {
+        $this->validateBatchRequestCount();
+
+        $params = [
+            'batch' => $this->convertRequestsToJson(),
+            'include_headers' => true,
+        ];
+        $this->setParams($params);
+    }
+
+    /**
+     * Converts the requests into a JSON(P) string.
+     *
+     * @return string
+     */
+    public function convertRequestsToJson()
+    {
+        $requests = [];
+        foreach ($this->requests as $request) {
+            $attachedFiles = isset($request['attached_files']) ? $request['attached_files'] : null;
+            $requests[] = $this->requestEntityToBatchArray($request['request'], $request['name'], $attachedFiles);
+        }
+
+        return json_encode($requests);
+    }
+
+    /**
+     * Validate the request count before sending them as a batch.
+     *
+     * @throws FacebookSDKException
+     */
+    public function validateBatchRequestCount()
+    {
+        $batchCount = count($this->requests);
+        if ($batchCount === 0) {
+            throw new FacebookSDKException('There are no batch requests to send.');
+        } elseif ($batchCount > 50) {
+            // Per: https://developers.facebook.com/docs/graph-api/making-multiple-requests#limits
+            throw new FacebookSDKException('You cannot send more than 50 batch requests at a time.');
+        }
+    }
+
+    /**
+     * Converts a Request entity into an array that is batch-friendly.
+     *
+     * @param FacebookRequest $request       The request entity to convert.
+     * @param string|null     $requestName   The name of the request.
+     * @param string|null     $attachedFiles Names of files associated with the request.
+     *
+     * @return array
+     */
+    public function requestEntityToBatchArray(FacebookRequest $request, $requestName = null, $attachedFiles = null)
+    {
+        $compiledHeaders = [];
+        $headers = $request->getHeaders();
+        foreach ($headers as $name => $value) {
+            $compiledHeaders[] = $name . ': ' . $value;
+        }
+
+        $batch = [
+            'headers' => $compiledHeaders,
+            'method' => $request->getMethod(),
+            'relative_url' => $request->getUrl(),
+        ];
+
+        // Since file uploads are moved to the root request of a batch request,
+        // the child requests will always be URL-encoded.
+        $body = $request->getUrlEncodedBody()->getBody();
+        if ($body) {
+            $batch['body'] = $body;
+        }
+
+        if (isset($requestName)) {
+            $batch['name'] = $requestName;
+        }
+
+        if (isset($attachedFiles)) {
+            $batch['attached_files'] = $attachedFiles;
+        }
+
+        // @TODO Add support for "omit_response_on_success"
+        // @TODO Add support for "depends_on"
+        // @TODO Add support for JSONP with "callback"
+
+        return $batch;
+    }
+
+    /**
+     * Get an iterator for the items.
+     *
+     * @return ArrayIterator
+     */
+    public function getIterator()
+    {
+        return new ArrayIterator($this->requests);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function offsetSet($offset, $value)
+    {
+        $this->add($value, $offset);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function offsetExists($offset)
+    {
+        return isset($this->requests[$offset]);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function offsetUnset($offset)
+    {
+        unset($this->requests[$offset]);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function offsetGet($offset)
+    {
+        return isset($this->requests[$offset]) ? $this->requests[$offset] : null;
+    }
+}

Facebook/FacebookBatchResponse.php

@@ -0,0 +1,154 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook;
+
+use ArrayIterator;
+use IteratorAggregate;
+use ArrayAccess;
+
+/**
+ * Class FacebookBatchResponse
+ *
+ * @package Facebook
+ */
+class FacebookBatchResponse extends FacebookResponse implements IteratorAggregate, ArrayAccess
+{
+    /**
+     * @var FacebookBatchRequest The original entity that made the batch request.
+     */
+    protected $batchRequest;
+
+    /**
+     * @var array An array of FacebookResponse entities.
+     */
+    protected $responses = [];
+
+    /**
+     * Creates a new Response entity.
+     *
+     * @param FacebookBatchRequest $batchRequest
+     * @param FacebookResponse     $response
+     */
+    public function __construct(FacebookBatchRequest $batchRequest, FacebookResponse $response)
+    {
+        $this->batchRequest = $batchRequest;
+
+        $request = $response->getRequest();
+        $body = $response->getBody();
+        $httpStatusCode = $response->getHttpStatusCode();
+        $headers = $response->getHeaders();
+        parent::__construct($request, $body, $httpStatusCode, $headers);
+
+        $responses = $response->getDecodedBody();
+        $this->setResponses($responses);
+    }
+
+    /**
+     * Returns an array of FacebookResponse entities.
+     *
+     * @return array
+     */
+    public function getResponses()
+    {
+        return $this->responses;
+    }
+
+    /**
+     * The main batch response will be an array of requests so
+     * we need to iterate over all the responses.
+     *
+     * @param array $responses
+     */
+    public function setResponses(array $responses)
+    {
+        $this->responses = [];
+
+        foreach ($responses as $key => $graphResponse) {
+            $this->addResponse($key, $graphResponse);
+        }
+    }
+
+    /**
+     * Add a response to the list.
+     *
+     * @param int        $key
+     * @param array|null $response
+     */
+    public function addResponse($key, $response)
+    {
+        $originalRequestName = isset($this->batchRequest[$key]['name']) ? $this->batchRequest[$key]['name'] : $key;
+        $originalRequest = isset($this->batchRequest[$key]['request']) ? $this->batchRequest[$key]['request'] : null;
+
+        $httpResponseBody = isset($response['body']) ? $response['body'] : null;
+        $httpResponseCode = isset($response['code']) ? $response['code'] : null;
+        $httpResponseHeaders = isset($response['headers']) ? $response['headers'] : [];
+
+        $this->responses[$originalRequestName] = new FacebookResponse(
+            $originalRequest,
+            $httpResponseBody,
+            $httpResponseCode,
+            $httpResponseHeaders
+        );
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getIterator()
+    {
+        return new ArrayIterator($this->responses);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function offsetSet($offset, $value)
+    {
+        $this->addResponse($offset, $value);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function offsetExists($offset)
+    {
+        return isset($this->responses[$offset]);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function offsetUnset($offset)
+    {
+        unset($this->responses[$offset]);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function offsetGet($offset)
+    {
+        return isset($this->responses[$offset]) ? $this->responses[$offset] : null;
+    }
+}

Facebook/FacebookClient.php

@@ -0,0 +1,250 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook;
+
+use Facebook\HttpClients\FacebookHttpClientInterface;
+use Facebook\HttpClients\FacebookCurlHttpClient;
+use Facebook\HttpClients\FacebookStreamHttpClient;
+use Facebook\Exceptions\FacebookSDKException;
+
+/**
+ * Class FacebookClient
+ *
+ * @package Facebook
+ */
+class FacebookClient
+{
+    /**
+     * @const string Production Graph API URL.
+     */
+    const BASE_GRAPH_URL = 'https://graph.facebook.com';
+
+    /**
+     * @const string Graph API URL for video uploads.
+     */
+    const BASE_GRAPH_VIDEO_URL = 'https://graph-video.facebook.com';
+
+    /**
+     * @const string Beta Graph API URL.
+     */
+    const BASE_GRAPH_URL_BETA = 'https://graph.beta.facebook.com';
+
+    /**
+     * @const string Beta Graph API URL for video uploads.
+     */
+    const BASE_GRAPH_VIDEO_URL_BETA = 'https://graph-video.beta.facebook.com';
+
+    /**
+     * @const int The timeout in seconds for a normal request.
+     */
+    const DEFAULT_REQUEST_TIMEOUT = 60;
+
+    /**
+     * @const int The timeout in seconds for a request that contains file uploads.
+     */
+    const DEFAULT_FILE_UPLOAD_REQUEST_TIMEOUT = 3600;
+
+    /**
+     * @const int The timeout in seconds for a request that contains video uploads.
+     */
+    const DEFAULT_VIDEO_UPLOAD_REQUEST_TIMEOUT = 7200;
+
+    /**
+     * @var bool Toggle to use Graph beta url.
+     */
+    protected $enableBetaMode = false;
+
+    /**
+     * @var FacebookHttpClientInterface HTTP client handler.
+     */
+    protected $httpClientHandler;
+
+    /**
+     * @var int The number of calls that have been made to Graph.
+     */
+    public static $requestCount = 0;
+
+    /**
+     * Instantiates a new FacebookClient object.
+     *
+     * @param FacebookHttpClientInterface|null $httpClientHandler
+     * @param boolean                          $enableBeta
+     */
+    public function __construct(FacebookHttpClientInterface $httpClientHandler = null, $enableBeta = false)
+    {
+        $this->httpClientHandler = $httpClientHandler ?: $this->detectHttpClientHandler();
+        $this->enableBetaMode = $enableBeta;
+    }
+
+    /**
+     * Sets the HTTP client handler.
+     *
+     * @param FacebookHttpClientInterface $httpClientHandler
+     */
+    public function setHttpClientHandler(FacebookHttpClientInterface $httpClientHandler)
+    {
+        $this->httpClientHandler = $httpClientHandler;
+    }
+
+    /**
+     * Returns the HTTP client handler.
+     *
+     * @return FacebookHttpClientInterface
+     */
+    public function getHttpClientHandler()
+    {
+        return $this->httpClientHandler;
+    }
+
+    /**
+     * Detects which HTTP client handler to use.
+     *
+     * @return FacebookHttpClientInterface
+     */
+    public function detectHttpClientHandler()
+    {
+        return function_exists('curl_init') ? new FacebookCurlHttpClient() : new FacebookStreamHttpClient();
+    }
+
+    /**
+     * Toggle beta mode.
+     *
+     * @param boolean $betaMode
+     */
+    public function enableBetaMode($betaMode = true)
+    {
+        $this->enableBetaMode = $betaMode;
+    }
+
+    /**
+     * Returns the base Graph URL.
+     *
+     * @param boolean $postToVideoUrl Post to the video API if videos are being uploaded.
+     *
+     * @return string
+     */
+    public function getBaseGraphUrl($postToVideoUrl = false)
+    {
+        if ($postToVideoUrl) {
+            return $this->enableBetaMode ? static::BASE_GRAPH_VIDEO_URL_BETA : static::BASE_GRAPH_VIDEO_URL;
+        }
+
+        return $this->enableBetaMode ? static::BASE_GRAPH_URL_BETA : static::BASE_GRAPH_URL;
+    }
+
+    /**
+     * Prepares the request for sending to the client handler.
+     *
+     * @param FacebookRequest $request
+     *
+     * @return array
+     */
+    public function prepareRequestMessage(FacebookRequest $request)
+    {
+        $postToVideoUrl = $request->containsVideoUploads();
+        $url = $this->getBaseGraphUrl($postToVideoUrl) . $request->getUrl();
+
+        // If we're sending files they should be sent as multipart/form-data
+        if ($request->containsFileUploads()) {
+            $requestBody = $request->getMultipartBody();
+            $request->setHeaders([
+                'Content-Type' => 'multipart/form-data; boundary=' . $requestBody->getBoundary(),
+            ]);
+        } else {
+            $requestBody = $request->getUrlEncodedBody();
+            $request->setHeaders([
+                'Content-Type' => 'application/x-www-form-urlencoded',
+            ]);
+        }
+
+        return [
+            $url,
+            $request->getMethod(),
+            $request->getHeaders(),
+            $requestBody->getBody(),
+        ];
+    }
+
+    /**
+     * Makes the request to Graph and returns the result.
+     *
+     * @param FacebookRequest $request
+     *
+     * @return FacebookResponse
+     *
+     * @throws FacebookSDKException
+     */
+    public function sendRequest(FacebookRequest $request)
+    {
+        if (get_class($request) === 'FacebookRequest') {
+            $request->validateAccessToken();
+        }
+
+        list($url, $method, $headers, $body) = $this->prepareRequestMessage($request);
+
+        // Since file uploads can take a while, we need to give more time for uploads
+        $timeOut = static::DEFAULT_REQUEST_TIMEOUT;
+        if ($request->containsFileUploads()) {
+            $timeOut = static::DEFAULT_FILE_UPLOAD_REQUEST_TIMEOUT;
+        } elseif ($request->containsVideoUploads()) {
+            $timeOut = static::DEFAULT_VIDEO_UPLOAD_REQUEST_TIMEOUT;
+        }
+
+        // Should throw `FacebookSDKException` exception on HTTP client error.
+        // Don't catch to allow it to bubble up.
+        $rawResponse = $this->httpClientHandler->send($url, $method, $body, $headers, $timeOut);
+
+        static::$requestCount++;
+
+        $returnResponse = new FacebookResponse(
+            $request,
+            $rawResponse->getBody(),
+            $rawResponse->getHttpResponseCode(),
+            $rawResponse->getHeaders()
+        );
+
+        if ($returnResponse->isError()) {
+            throw $returnResponse->getThrownException();
+        }
+
+        return $returnResponse;
+    }
+
+    /**
+     * Makes a batched request to Graph and returns the result.
+     *
+     * @param FacebookBatchRequest $request
+     *
+     * @return FacebookBatchResponse
+     *
+     * @throws FacebookSDKException
+     */
+    public function sendBatchRequest(FacebookBatchRequest $request)
+    {
+        $request->prepareRequestsForBatch();
+        $facebookResponse = $this->sendRequest($request);
+
+        return new FacebookBatchResponse($request, $facebookResponse);
+    }
+}

Facebook/FacebookRequest.php

@@ -0,0 +1,536 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook;
+
+use Facebook\Authentication\AccessToken;
+use Facebook\Url\FacebookUrlManipulator;
+use Facebook\FileUpload\FacebookFile;
+use Facebook\FileUpload\FacebookVideo;
+use Facebook\Http\RequestBodyMultipart;
+use Facebook\Http\RequestBodyUrlEncoded;
+use Facebook\Exceptions\FacebookSDKException;
+
+/**
+ * Class Request
+ *
+ * @package Facebook
+ */
+class FacebookRequest
+{
+    /**
+     * @var FacebookApp The Facebook app entity.
+     */
+    protected $app;
+
+    /**
+     * @var string|null The access token to use for this request.
+     */
+    protected $accessToken;
+
+    /**
+     * @var string The HTTP method for this request.
+     */
+    protected $method;
+
+    /**
+     * @var string The Graph endpoint for this request.
+     */
+    protected $endpoint;
+
+    /**
+     * @var array The headers to send with this request.
+     */
+    protected $headers = [];
+
+    /**
+     * @var array The parameters to send with this request.
+     */
+    protected $params = [];
+
+    /**
+     * @var array The files to send with this request.
+     */
+    protected $files = [];
+
+    /**
+     * @var string ETag to send with this request.
+     */
+    protected $eTag;
+
+    /**
+     * @var string Graph version to use for this request.
+     */
+    protected $graphVersion;
+
+    /**
+     * Creates a new Request entity.
+     *
+     * @param FacebookApp|null        $app
+     * @param AccessToken|string|null $accessToken
+     * @param string|null             $method
+     * @param string|null             $endpoint
+     * @param array|null              $params
+     * @param string|null             $eTag
+     * @param string|null             $graphVersion
+     */
+    public function __construct(FacebookApp $app = null, $accessToken = null, $method = null, $endpoint = null, array $params = [], $eTag = null, $graphVersion = null)
+    {
+        $this->setApp($app);
+        $this->setAccessToken($accessToken);
+        $this->setMethod($method);
+        $this->setEndpoint($endpoint);
+        $this->setParams($params);
+        $this->setETag($eTag);
+        $this->graphVersion = $graphVersion ?: Facebook::DEFAULT_GRAPH_VERSION;
+    }
+
+    /**
+     * Set the access token for this request.
+     *
+     * @param AccessToken|string
+     *
+     * @return FacebookRequest
+     */
+    public function setAccessToken($accessToken)
+    {
+        $this->accessToken = $accessToken;
+        if ($accessToken instanceof AccessToken) {
+            $this->accessToken = $accessToken->getValue();
+        }
+
+        return $this;
+    }
+
+    /**
+     * Sets the access token with one harvested from a URL or POST params.
+     *
+     * @param string $accessToken The access token.
+     *
+     * @return FacebookRequest
+     *
+     * @throws FacebookSDKException
+     */
+    public function setAccessTokenFromParams($accessToken)
+    {
+        $existingAccessToken = $this->getAccessToken();
+        if (!$existingAccessToken) {
+            $this->setAccessToken($accessToken);
+        } elseif ($accessToken !== $existingAccessToken) {
+            throw new FacebookSDKException('Access token mismatch. The access token provided in the FacebookRequest and the one provided in the URL or POST params do not match.');
+        }
+
+        return $this;
+    }
+
+    /**
+     * Return the access token for this request.
+     *
+     * @return string|null
+     */
+    public function getAccessToken()
+    {
+        return $this->accessToken;
+    }
+
+    /**
+     * Return the access token for this request an an AccessToken entity.
+     *
+     * @return AccessToken|null
+     */
+    public function getAccessTokenEntity()
+    {
+        return $this->accessToken ? new AccessToken($this->accessToken) : null;
+    }
+
+    /**
+     * Set the FacebookApp entity used for this request.
+     *
+     * @param FacebookApp|null $app
+     */
+    public function setApp(FacebookApp $app = null)
+    {
+        $this->app = $app;
+    }
+
+    /**
+     * Return the FacebookApp entity used for this request.
+     *
+     * @return FacebookApp
+     */
+    public function getApp()
+    {
+        return $this->app;
+    }
+
+    /**
+     * Generate an app secret proof to sign this request.
+     *
+     * @return string|null
+     */
+    public function getAppSecretProof()
+    {
+        if (!$accessTokenEntity = $this->getAccessTokenEntity()) {
+            return null;
+        }
+
+        return $accessTokenEntity->getAppSecretProof($this->app->getSecret());
+    }
+
+    /**
+     * Validate that an access token exists for this request.
+     *
+     * @throws FacebookSDKException
+     */
+    public function validateAccessToken()
+    {
+        $accessToken = $this->getAccessToken();
+        if (!$accessToken) {
+            throw new FacebookSDKException('You must provide an access token.');
+        }
+    }
+
+    /**
+     * Set the HTTP method for this request.
+     *
+     * @param string
+     *
+     * @return FacebookRequest
+     */
+    public function setMethod($method)
+    {
+        $this->method = strtoupper($method);
+    }
+
+    /**
+     * Return the HTTP method for this request.
+     *
+     * @return string
+     */
+    public function getMethod()
+    {
+        return $this->method;
+    }
+
+    /**
+     * Validate that the HTTP method is set.
+     *
+     * @throws FacebookSDKException
+     */
+    public function validateMethod()
+    {
+        if (!$this->method) {
+            throw new FacebookSDKException('HTTP method not specified.');
+        }
+
+        if (!in_array($this->method, ['GET', 'POST', 'DELETE'])) {
+            throw new FacebookSDKException('Invalid HTTP method specified.');
+        }
+    }
+
+    /**
+     * Set the endpoint for this request.
+     *
+     * @param string
+     *
+     * @return FacebookRequest
+     *
+     * @throws FacebookSDKException
+     */
+    public function setEndpoint($endpoint)
+    {
+        // Harvest the access token from the endpoint to keep things in sync
+        $params = FacebookUrlManipulator::getParamsAsArray($endpoint);
+        if (isset($params['access_token'])) {
+            $this->setAccessTokenFromParams($params['access_token']);
+        }
+
+        // Clean the token & app secret proof from the endpoint.
+        $filterParams = ['access_token', 'appsecret_proof'];
+        $this->endpoint = FacebookUrlManipulator::removeParamsFromUrl($endpoint, $filterParams);
+
+        return $this;
+    }
+
+    /**
+     * Return the HTTP method for this request.
+     *
+     * @return string
+     */
+    public function getEndpoint()
+    {
+        // For batch requests, this will be empty
+        return $this->endpoint;
+    }
+
+    /**
+     * Generate and return the headers for this request.
+     *
+     * @return array
+     */
+    public function getHeaders()
+    {
+        $headers = static::getDefaultHeaders();
+
+        if ($this->eTag) {
+            $headers['If-None-Match'] = $this->eTag;
+        }
+
+        return array_merge($this->headers, $headers);
+    }
+
+    /**
+     * Set the headers for this request.
+     *
+     * @param array $headers
+     */
+    public function setHeaders(array $headers)
+    {
+        $this->headers = array_merge($this->headers, $headers);
+    }
+
+    /**
+     * Sets the eTag value.
+     *
+     * @param string $eTag
+     */
+    public function setETag($eTag)
+    {
+        $this->eTag = $eTag;
+    }
+
+    /**
+     * Set the params for this request.
+     *
+     * @param array $params
+     *
+     * @return FacebookRequest
+     *
+     * @throws FacebookSDKException
+     */
+    public function setParams(array $params = [])
+    {
+        if (isset($params['access_token'])) {
+            $this->setAccessTokenFromParams($params['access_token']);
+        }
+
+        // Don't let these buggers slip in.
+        unset($params['access_token'], $params['appsecret_proof']);
+
+        // @TODO Refactor code above with this
+        //$params = $this->sanitizeAuthenticationParams($params);
+        $params = $this->sanitizeFileParams($params);
+        $this->dangerouslySetParams($params);
+
+        return $this;
+    }
+
+    /**
+     * Set the params for this request without filtering them first.
+     *
+     * @param array $params
+     *
+     * @return FacebookRequest
+     */
+    public function dangerouslySetParams(array $params = [])
+    {
+        $this->params = array_merge($this->params, $params);
+
+        return $this;
+    }
+
+    /**
+     * Iterate over the params and pull out the file uploads.
+     *
+     * @param array $params
+     *
+     * @return array
+     */
+    public function sanitizeFileParams(array $params)
+    {
+        foreach ($params as $key => $value) {
+            if ($value instanceof FacebookFile) {
+                $this->addFile($key, $value);
+                unset($params[$key]);
+            }
+        }
+
+        return $params;
+    }
+
+    /**
+     * Add a file to be uploaded.
+     *
+     * @param string       $key
+     * @param FacebookFile $file
+     */
+    public function addFile($key, FacebookFile $file)
+    {
+        $this->files[$key] = $file;
+    }
+
+    /**
+     * Removes all the files from the upload queue.
+     */
+    public function resetFiles()
+    {
+        $this->files = [];
+    }
+
+    /**
+     * Get the list of files to be uploaded.
+     *
+     * @return array
+     */
+    public function getFiles()
+    {
+        return $this->files;
+    }
+
+    /**
+     * Let's us know if there is a file upload with this request.
+     *
+     * @return boolean
+     */
+    public function containsFileUploads()
+    {
+        return !empty($this->files);
+    }
+
+    /**
+     * Let's us know if there is a video upload with this request.
+     *
+     * @return boolean
+     */
+    public function containsVideoUploads()
+    {
+        foreach ($this->files as $file) {
+            if ($file instanceof FacebookVideo) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Returns the body of the request as multipart/form-data.
+     *
+     * @return RequestBodyMultipart
+     */
+    public function getMultipartBody()
+    {
+        $params = $this->getPostParams();
+
+        return new RequestBodyMultipart($params, $this->files);
+    }
+
+    /**
+     * Returns the body of the request as URL-encoded.
+     *
+     * @return RequestBodyUrlEncoded
+     */
+    public function getUrlEncodedBody()
+    {
+        $params = $this->getPostParams();
+
+        return new RequestBodyUrlEncoded($params);
+    }
+
+    /**
+     * Generate and return the params for this request.
+     *
+     * @return array
+     */
+    public function getParams()
+    {
+        $params = $this->params;
+
+        $accessToken = $this->getAccessToken();
+        if ($accessToken) {
+            $params['access_token'] = $accessToken;
+            $params['appsecret_proof'] = $this->getAppSecretProof();
+        }
+
+        return $params;
+    }
+
+    /**
+     * Only return params on POST requests.
+     *
+     * @return array
+     */
+    public function getPostParams()
+    {
+        if ($this->getMethod() === 'POST') {
+            return $this->getParams();
+        }
+
+        return [];
+    }
+
+    /**
+     * The graph version used for this request.
+     *
+     * @return string
+     */
+    public function getGraphVersion()
+    {
+        return $this->graphVersion;
+    }
+
+    /**
+     * Generate and return the URL for this request.
+     *
+     * @return string
+     */
+    public function getUrl()
+    {
+        $this->validateMethod();
+
+        $graphVersion = FacebookUrlManipulator::forceSlashPrefix($this->graphVersion);
+        $endpoint = FacebookUrlManipulator::forceSlashPrefix($this->getEndpoint());
+
+        $url = $graphVersion . $endpoint;
+
+        if ($this->getMethod() !== 'POST') {
+            $params = $this->getParams();
+            $url = FacebookUrlManipulator::appendParamsToUrl($url, $params);
+        }
+
+        return $url;
+    }
+
+    /**
+     * Return the default headers that every request should use.
+     *
+     * @return array
+     */
+    public static function getDefaultHeaders()
+    {
+        return [
+            'User-Agent' => 'fb-php-' . Facebook::VERSION,
+            'Accept-Encoding' => '*',
+        ];
+    }
+}

Facebook/FacebookResponse.php

@@ -0,0 +1,410 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook;
+
+use Facebook\GraphNodes\GraphNodeFactory;
+use Facebook\Exceptions\FacebookResponseException;
+use Facebook\Exceptions\FacebookSDKException;
+
+/**
+ * Class FacebookResponse
+ *
+ * @package Facebook
+ */
+class FacebookResponse
+{
+    /**
+     * @var int The HTTP status code response from Graph.
+     */
+    protected $httpStatusCode;
+
+    /**
+     * @var array The headers returned from Graph.
+     */
+    protected $headers;
+
+    /**
+     * @var string The raw body of the response from Graph.
+     */
+    protected $body;
+
+    /**
+     * @var array The decoded body of the Graph response.
+     */
+    protected $decodedBody = [];
+
+    /**
+     * @var FacebookRequest The original request that returned this response.
+     */
+    protected $request;
+
+    /**
+     * @var FacebookSDKException The exception thrown by this request.
+     */
+    protected $thrownException;
+
+    /**
+     * Creates a new Response entity.
+     *
+     * @param FacebookRequest $request
+     * @param string|null     $body
+     * @param int|null        $httpStatusCode
+     * @param array|null      $headers
+     */
+    public function __construct(FacebookRequest $request, $body = null, $httpStatusCode = null, array $headers = [])
+    {
+        $this->request = $request;
+        $this->body = $body;
+        $this->httpStatusCode = $httpStatusCode;
+        $this->headers = $headers;
+
+        $this->decodeBody();
+    }
+
+    /**
+     * Return the original request that returned this response.
+     *
+     * @return FacebookRequest
+     */
+    public function getRequest()
+    {
+        return $this->request;
+    }
+
+    /**
+     * Return the FacebookApp entity used for this response.
+     *
+     * @return FacebookApp
+     */
+    public function getApp()
+    {
+        return $this->request->getApp();
+    }
+
+    /**
+     * Return the access token that was used for this response.
+     *
+     * @return string|null
+     */
+    public function getAccessToken()
+    {
+        return $this->request->getAccessToken();
+    }
+
+    /**
+     * Return the HTTP status code for this response.
+     *
+     * @return int
+     */
+    public function getHttpStatusCode()
+    {
+        return $this->httpStatusCode;
+    }
+
+    /**
+     * Return the HTTP headers for this response.
+     *
+     * @return array
+     */
+    public function getHeaders()
+    {
+        return $this->headers;
+    }
+
+    /**
+     * Return the raw body response.
+     *
+     * @return string
+     */
+    public function getBody()
+    {
+        return $this->body;
+    }
+
+    /**
+     * Return the decoded body response.
+     *
+     * @return array
+     */
+    public function getDecodedBody()
+    {
+        return $this->decodedBody;
+    }
+
+    /**
+     * Get the app secret proof that was used for this response.
+     *
+     * @return string|null
+     */
+    public function getAppSecretProof()
+    {
+        return $this->request->getAppSecretProof();
+    }
+
+    /**
+     * Get the ETag associated with the response.
+     *
+     * @return string|null
+     */
+    public function getETag()
+    {
+        return isset($this->headers['ETag']) ? $this->headers['ETag'] : null;
+    }
+
+    /**
+     * Get the version of Graph that returned this response.
+     *
+     * @return string|null
+     */
+    public function getGraphVersion()
+    {
+        return isset($this->headers['Facebook-API-Version']) ? $this->headers['Facebook-API-Version'] : null;
+    }
+
+    /**
+     * Returns true if Graph returned an error message.
+     *
+     * @return boolean
+     */
+    public function isError()
+    {
+        return isset($this->decodedBody['error']);
+    }
+
+    /**
+     * Throws the exception.
+     *
+     * @throws FacebookSDKException
+     */
+    public function throwException()
+    {
+        throw $this->thrownException;
+    }
+
+    /**
+     * Instantiates an exception to be thrown later.
+     */
+    public function makeException()
+    {
+        $this->thrownException = FacebookResponseException::create($this);
+    }
+
+    /**
+     * Returns the exception that was thrown for this request.
+     *
+     * @return FacebookSDKException|null
+     */
+    public function getThrownException()
+    {
+        return $this->thrownException;
+    }
+
+    /**
+     * Convert the raw response into an array if possible.
+     *
+     * Graph will return 2 types of responses:
+     * - JSON(P)
+     *    Most responses from Graph are JSON(P)
+     * - application/x-www-form-urlencoded key/value pairs
+     *    Happens on the `/oauth/access_token` endpoint when exchanging
+     *    a short-lived access token for a long-lived access token
+     * - And sometimes nothing :/ but that'd be a bug.
+     */
+    public function decodeBody()
+    {
+        $this->decodedBody = json_decode($this->body, true);
+
+        if ($this->decodedBody === null) {
+            $this->decodedBody = [];
+            parse_str($this->body, $this->decodedBody);
+        } elseif (is_bool($this->decodedBody)) {
+            // Backwards compatibility for Graph < 2.1.
+            // Mimics 2.1 responses.
+            // @TODO Remove this after Graph 2.0 is no longer supported
+            $this->decodedBody = ['success' => $this->decodedBody];
+        } elseif (is_numeric($this->decodedBody)) {
+            $this->decodedBody = ['id' => $this->decodedBody];
+        }
+
+        if (!is_array($this->decodedBody)) {
+            $this->decodedBody = [];
+        }
+
+        if ($this->isError()) {
+            $this->makeException();
+        }
+    }
+
+    /**
+     * Instantiate a new GraphObject from response.
+     *
+     * @param string|null $subclassName The GraphNode subclass to cast to.
+     *
+     * @return \Facebook\GraphNodes\GraphObject
+     *
+     * @throws FacebookSDKException
+     *
+     * @deprecated 5.0.0 getGraphObject() has been renamed to getGraphNode()
+     * @todo v6: Remove this method
+     */
+    public function getGraphObject($subclassName = null)
+    {
+        return $this->getGraphNode($subclassName);
+    }
+
+    /**
+     * Instantiate a new GraphNode from response.
+     *
+     * @param string|null $subclassName The GraphNode subclass to cast to.
+     *
+     * @return \Facebook\GraphNodes\GraphNode
+     *
+     * @throws FacebookSDKException
+     */
+    public function getGraphNode($subclassName = null)
+    {
+        $factory = new GraphNodeFactory($this);
+
+        return $factory->makeGraphNode($subclassName);
+    }
+
+    /**
+     * Convenience method for creating a GraphAlbum collection.
+     *
+     * @return \Facebook\GraphNodes\GraphAlbum
+     *
+     * @throws FacebookSDKException
+     */
+    public function getGraphAlbum()
+    {
+        $factory = new GraphNodeFactory($this);
+
+        return $factory->makeGraphAlbum();
+    }
+
+    /**
+     * Convenience method for creating a GraphPage collection.
+     *
+     * @return \Facebook\GraphNodes\GraphPage
+     *
+     * @throws FacebookSDKException
+     */
+    public function getGraphPage()
+    {
+        $factory = new GraphNodeFactory($this);
+
+        return $factory->makeGraphPage();
+    }
+
+    /**
+     * Convenience method for creating a GraphSessionInfo collection.
+     *
+     * @return \Facebook\GraphNodes\GraphSessionInfo
+     *
+     * @throws FacebookSDKException
+     */
+    public function getGraphSessionInfo()
+    {
+        $factory = new GraphNodeFactory($this);
+
+        return $factory->makeGraphSessionInfo();
+    }
+
+    /**
+     * Convenience method for creating a GraphUser collection.
+     *
+     * @return \Facebook\GraphNodes\GraphUser
+     *
+     * @throws FacebookSDKException
+     */
+    public function getGraphUser()
+    {
+        $factory = new GraphNodeFactory($this);
+
+        return $factory->makeGraphUser();
+    }
+
+    /**
+     * Convenience method for creating a GraphEvent collection.
+     *
+     * @return \Facebook\GraphNodes\GraphEvent
+     *
+     * @throws FacebookSDKException
+     */
+    public function getGraphEvent()
+    {
+        $factory = new GraphNodeFactory($this);
+
+        return $factory->makeGraphEvent();
+    }
+
+    /**
+     * Convenience method for creating a GraphGroup collection.
+     *
+     * @return \Facebook\GraphNodes\GraphGroup
+     *
+     * @throws FacebookSDKException
+     */
+    public function getGraphGroup()
+    {
+        $factory = new GraphNodeFactory($this);
+
+        return $factory->makeGraphGroup();
+    }
+
+    /**
+     * Instantiate a new GraphList from response.
+     *
+     * @param string|null $subclassName The GraphNode subclass to cast list items to.
+     * @param boolean     $auto_prefix  Toggle to auto-prefix the subclass name.
+     *
+     * @return \Facebook\GraphNodes\GraphList
+     *
+     * @throws FacebookSDKException
+     *
+     * @deprecated 5.0.0 getGraphList() has been renamed to getGraphEdge()
+     * @todo v6: Remove this method
+     */
+    public function getGraphList($subclassName = null, $auto_prefix = true)
+    {
+        return $this->getGraphEdge($subclassName, $auto_prefix);
+    }
+
+    /**
+     * Instantiate a new GraphEdge from response.
+     *
+     * @param string|null $subclassName The GraphNode subclass to cast list items to.
+     * @param boolean     $auto_prefix  Toggle to auto-prefix the subclass name.
+     *
+     * @return \Facebook\GraphNodes\GraphEdge
+     *
+     * @throws FacebookSDKException
+     */
+    public function getGraphEdge($subclassName = null, $auto_prefix = true)
+    {
+        $factory = new GraphNodeFactory($this);
+
+        return $factory->makeGraphEdge($subclassName, $auto_prefix);
+    }
+}

Facebook/FileUpload/FacebookFile.php

@@ -0,0 +1,135 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\FileUpload;
+
+use Facebook\Exceptions\FacebookSDKException;
+
+/**
+ * Class FacebookFile
+ *
+ * @package Facebook
+ */
+class FacebookFile
+{
+    /**
+     * @var string The path to the file on the system.
+     */
+    protected $path;
+
+    /**
+     * @var resource The stream pointing to the file.
+     */
+    protected $stream;
+
+    /**
+     * Creates a new FacebookFile entity.
+     *
+     * @param string $filePath
+     *
+     * @throws FacebookSDKException
+     */
+    public function __construct($filePath)
+    {
+        $this->path = $filePath;
+        $this->open();
+    }
+
+    /**
+     * Closes the stream when destructed.
+     */
+    public function __destruct()
+    {
+        $this->close();
+    }
+
+    /**
+     * Opens a stream for the file.
+     *
+     * @throws FacebookSDKException
+     */
+    public function open()
+    {
+        if (!$this->isRemoteFile($this->path) && !is_readable($this->path)) {
+            throw new FacebookSDKException('Failed to create FacebookFile entity. Unable to read resource: ' . $this->path . '.');
+        }
+
+        $this->stream = fopen($this->path, 'r');
+
+        if (!$this->stream) {
+            throw new FacebookSDKException('Failed to create FacebookFile entity. Unable to open resource: ' . $this->path . '.');
+        }
+    }
+
+    /**
+     * Stops the file stream.
+     */
+    public function close()
+    {
+        if (is_resource($this->stream)) {
+            fclose($this->stream);
+        }
+    }
+
+    /**
+     * Return the contents of the file.
+     *
+     * @return string
+     */
+    public function getContents()
+    {
+        return stream_get_contents($this->stream);
+    }
+
+    /**
+     * Return the name of the file.
+     *
+     * @return string
+     */
+    public function getFileName()
+    {
+        return basename($this->path);
+    }
+
+    /**
+     * Return the mimetype of the file.
+     *
+     * @return string
+     */
+    public function getMimetype()
+    {
+        return Mimetypes::getInstance()->fromFilename($this->path) ?: 'text/plain';
+    }
+
+    /**
+     * Returns true if the path to the file is remote.
+     *
+     * @param string $pathToFile
+     *
+     * @return boolean
+     */
+    protected function isRemoteFile($pathToFile)
+    {
+        return preg_match('/^(https?|ftp):\/\/.*/', $pathToFile) === 1;
+    }
+}

Facebook/FileUpload/FacebookVideo.php

@@ -0,0 +1,33 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\FileUpload;
+
+/**
+ * Class FacebookVideo
+ *
+ * @package Facebook
+ */
+class FacebookVideo extends FacebookFile
+{
+}

Facebook/FileUpload/Mimetypes.php

@@ -0,0 +1,987 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\FileUpload;
+
+/**
+ * Provides mappings of file extensions to mimetypes
+ *
+ * Taken from Guzzle
+ *
+ * @see https://github.com/guzzle/guzzle/blob/master/src/Mimetypes.php
+ *
+ * @link http://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x/conf/mime.types
+ */
+class Mimetypes
+{
+    /** @var self */
+    protected static $instance;
+
+    /** @var array Mapping of extension to mimetype */
+    protected $mimetypes = [
+        '3dml' => 'text/vnd.in3d.3dml',
+        '3g2' => 'video/3gpp2',
+        '3gp' => 'video/3gpp',
+        '7z' => 'application/x-7z-compressed',
+        'aab' => 'application/x-authorware-bin',
+        'aac' => 'audio/x-aac',
+        'aam' => 'application/x-authorware-map',
+        'aas' => 'application/x-authorware-seg',
+        'abw' => 'application/x-abiword',
+        'ac' => 'application/pkix-attr-cert',
+        'acc' => 'application/vnd.americandynamics.acc',
+        'ace' => 'application/x-ace-compressed',
+        'acu' => 'application/vnd.acucobol',
+        'acutc' => 'application/vnd.acucorp',
+        'adp' => 'audio/adpcm',
+        'aep' => 'application/vnd.audiograph',
+        'afm' => 'application/x-font-type1',
+        'afp' => 'application/vnd.ibm.modcap',
+        'ahead' => 'application/vnd.ahead.space',
+        'ai' => 'application/postscript',
+        'aif' => 'audio/x-aiff',
+        'aifc' => 'audio/x-aiff',
+        'aiff' => 'audio/x-aiff',
+        'air' => 'application/vnd.adobe.air-application-installer-package+zip',
+        'ait' => 'application/vnd.dvb.ait',
+        'ami' => 'application/vnd.amiga.ami',
+        'apk' => 'application/vnd.android.package-archive',
+        'application' => 'application/x-ms-application',
+        'apr' => 'application/vnd.lotus-approach',
+        'asa' => 'text/plain',
+        'asax' => 'application/octet-stream',
+        'asc' => 'application/pgp-signature',
+        'ascx' => 'text/plain',
+        'asf' => 'video/x-ms-asf',
+        'ashx' => 'text/plain',
+        'asm' => 'text/x-asm',
+        'asmx' => 'text/plain',
+        'aso' => 'application/vnd.accpac.simply.aso',
+        'asp' => 'text/plain',
+        'aspx' => 'text/plain',
+        'asx' => 'video/x-ms-asf',
+        'atc' => 'application/vnd.acucorp',
+        'atom' => 'application/atom+xml',
+        'atomcat' => 'application/atomcat+xml',
+        'atomsvc' => 'application/atomsvc+xml',
+        'atx' => 'application/vnd.antix.game-component',
+        'au' => 'audio/basic',
+        'avi' => 'video/x-msvideo',
+        'aw' => 'application/applixware',
+        'axd' => 'text/plain',
+        'azf' => 'application/vnd.airzip.filesecure.azf',
+        'azs' => 'application/vnd.airzip.filesecure.azs',
+        'azw' => 'application/vnd.amazon.ebook',
+        'bat' => 'application/x-msdownload',
+        'bcpio' => 'application/x-bcpio',
+        'bdf' => 'application/x-font-bdf',
+        'bdm' => 'application/vnd.syncml.dm+wbxml',
+        'bed' => 'application/vnd.realvnc.bed',
+        'bh2' => 'application/vnd.fujitsu.oasysprs',
+        'bin' => 'application/octet-stream',
+        'bmi' => 'application/vnd.bmi',
+        'bmp' => 'image/bmp',
+        'book' => 'application/vnd.framemaker',
+        'box' => 'application/vnd.previewsystems.box',
+        'boz' => 'application/x-bzip2',
+        'bpk' => 'application/octet-stream',
+        'btif' => 'image/prs.btif',
+        'bz' => 'application/x-bzip',
+        'bz2' => 'application/x-bzip2',
+        'c' => 'text/x-c',
+        'c11amc' => 'application/vnd.cluetrust.cartomobile-config',
+        'c11amz' => 'application/vnd.cluetrust.cartomobile-config-pkg',
+        'c4d' => 'application/vnd.clonk.c4group',
+        'c4f' => 'application/vnd.clonk.c4group',
+        'c4g' => 'application/vnd.clonk.c4group',
+        'c4p' => 'application/vnd.clonk.c4group',
+        'c4u' => 'application/vnd.clonk.c4group',
+        'cab' => 'application/vnd.ms-cab-compressed',
+        'car' => 'application/vnd.curl.car',
+        'cat' => 'application/vnd.ms-pki.seccat',
+        'cc' => 'text/x-c',
+        'cct' => 'application/x-director',
+        'ccxml' => 'application/ccxml+xml',
+        'cdbcmsg' => 'application/vnd.contact.cmsg',
+        'cdf' => 'application/x-netcdf',
+        'cdkey' => 'application/vnd.mediastation.cdkey',
+        'cdmia' => 'application/cdmi-capability',
+        'cdmic' => 'application/cdmi-container',
+        'cdmid' => 'application/cdmi-domain',
+        'cdmio' => 'application/cdmi-object',
+        'cdmiq' => 'application/cdmi-queue',
+        'cdx' => 'chemical/x-cdx',
+        'cdxml' => 'application/vnd.chemdraw+xml',
+        'cdy' => 'application/vnd.cinderella',
+        'cer' => 'application/pkix-cert',
+        'cfc' => 'application/x-coldfusion',
+        'cfm' => 'application/x-coldfusion',
+        'cgm' => 'image/cgm',
+        'chat' => 'application/x-chat',
+        'chm' => 'application/vnd.ms-htmlhelp',
+        'chrt' => 'application/vnd.kde.kchart',
+        'cif' => 'chemical/x-cif',
+        'cii' => 'application/vnd.anser-web-certificate-issue-initiation',
+        'cil' => 'application/vnd.ms-artgalry',
+        'cla' => 'application/vnd.claymore',
+        'class' => 'application/java-vm',
+        'clkk' => 'application/vnd.crick.clicker.keyboard',
+        'clkp' => 'application/vnd.crick.clicker.palette',
+        'clkt' => 'application/vnd.crick.clicker.template',
+        'clkw' => 'application/vnd.crick.clicker.wordbank',
+        'clkx' => 'application/vnd.crick.clicker',
+        'clp' => 'application/x-msclip',
+        'cmc' => 'application/vnd.cosmocaller',
+        'cmdf' => 'chemical/x-cmdf',
+        'cml' => 'chemical/x-cml',
+        'cmp' => 'application/vnd.yellowriver-custom-menu',
+        'cmx' => 'image/x-cmx',
+        'cod' => 'application/vnd.rim.cod',
+        'com' => 'application/x-msdownload',
+        'conf' => 'text/plain',
+        'cpio' => 'application/x-cpio',
+        'cpp' => 'text/x-c',
+        'cpt' => 'application/mac-compactpro',
+        'crd' => 'application/x-mscardfile',
+        'crl' => 'application/pkix-crl',
+        'crt' => 'application/x-x509-ca-cert',
+        'cryptonote' => 'application/vnd.rig.cryptonote',
+        'cs' => 'text/plain',
+        'csh' => 'application/x-csh',
+        'csml' => 'chemical/x-csml',
+        'csp' => 'application/vnd.commonspace',
+        'css' => 'text/css',
+        'cst' => 'application/x-director',
+        'csv' => 'text/csv',
+        'cu' => 'application/cu-seeme',
+        'curl' => 'text/vnd.curl',
+        'cww' => 'application/prs.cww',
+        'cxt' => 'application/x-director',
+        'cxx' => 'text/x-c',
+        'dae' => 'model/vnd.collada+xml',
+        'daf' => 'application/vnd.mobius.daf',
+        'dataless' => 'application/vnd.fdsn.seed',
+        'davmount' => 'application/davmount+xml',
+        'dcr' => 'application/x-director',
+        'dcurl' => 'text/vnd.curl.dcurl',
+        'dd2' => 'application/vnd.oma.dd2+xml',
+        'ddd' => 'application/vnd.fujixerox.ddd',
+        'deb' => 'application/x-debian-package',
+        'def' => 'text/plain',
+        'deploy' => 'application/octet-stream',
+        'der' => 'application/x-x509-ca-cert',
+        'dfac' => 'application/vnd.dreamfactory',
+        'dic' => 'text/x-c',
+        'dir' => 'application/x-director',
+        'dis' => 'application/vnd.mobius.dis',
+        'dist' => 'application/octet-stream',
+        'distz' => 'application/octet-stream',
+        'djv' => 'image/vnd.djvu',
+        'djvu' => 'image/vnd.djvu',
+        'dll' => 'application/x-msdownload',
+        'dmg' => 'application/octet-stream',
+        'dms' => 'application/octet-stream',
+        'dna' => 'application/vnd.dna',
+        'doc' => 'application/msword',
+        'docm' => 'application/vnd.ms-word.document.macroenabled.12',
+        'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
+        'dot' => 'application/msword',
+        'dotm' => 'application/vnd.ms-word.template.macroenabled.12',
+        'dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template',
+        'dp' => 'application/vnd.osgi.dp',
+        'dpg' => 'application/vnd.dpgraph',
+        'dra' => 'audio/vnd.dra',
+        'dsc' => 'text/prs.lines.tag',
+        'dssc' => 'application/dssc+der',
+        'dtb' => 'application/x-dtbook+xml',
+        'dtd' => 'application/xml-dtd',
+        'dts' => 'audio/vnd.dts',
+        'dtshd' => 'audio/vnd.dts.hd',
+        'dump' => 'application/octet-stream',
+        'dvi' => 'application/x-dvi',
+        'dwf' => 'model/vnd.dwf',
+        'dwg' => 'image/vnd.dwg',
+        'dxf' => 'image/vnd.dxf',
+        'dxp' => 'application/vnd.spotfire.dxp',
+        'dxr' => 'application/x-director',
+        'ecelp4800' => 'audio/vnd.nuera.ecelp4800',
+        'ecelp7470' => 'audio/vnd.nuera.ecelp7470',
+        'ecelp9600' => 'audio/vnd.nuera.ecelp9600',
+        'ecma' => 'application/ecmascript',
+        'edm' => 'application/vnd.novadigm.edm',
+        'edx' => 'application/vnd.novadigm.edx',
+        'efif' => 'application/vnd.picsel',
+        'ei6' => 'application/vnd.pg.osasli',
+        'elc' => 'application/octet-stream',
+        'eml' => 'message/rfc822',
+        'emma' => 'application/emma+xml',
+        'eol' => 'audio/vnd.digital-winds',
+        'eot' => 'application/vnd.ms-fontobject',
+        'eps' => 'application/postscript',
+        'epub' => 'application/epub+zip',
+        'es3' => 'application/vnd.eszigno3+xml',
+        'esf' => 'application/vnd.epson.esf',
+        'et3' => 'application/vnd.eszigno3+xml',
+        'etx' => 'text/x-setext',
+        'exe' => 'application/x-msdownload',
+        'exi' => 'application/exi',
+        'ext' => 'application/vnd.novadigm.ext',
+        'ez' => 'application/andrew-inset',
+        'ez2' => 'application/vnd.ezpix-album',
+        'ez3' => 'application/vnd.ezpix-package',
+        'f' => 'text/x-fortran',
+        'f4v' => 'video/x-f4v',
+        'f77' => 'text/x-fortran',
+        'f90' => 'text/x-fortran',
+        'fbs' => 'image/vnd.fastbidsheet',
+        'fcs' => 'application/vnd.isac.fcs',
+        'fdf' => 'application/vnd.fdf',
+        'fe_launch' => 'application/vnd.denovo.fcselayout-link',
+        'fg5' => 'application/vnd.fujitsu.oasysgp',
+        'fgd' => 'application/x-director',
+        'fh' => 'image/x-freehand',
+        'fh4' => 'image/x-freehand',
+        'fh5' => 'image/x-freehand',
+        'fh7' => 'image/x-freehand',
+        'fhc' => 'image/x-freehand',
+        'fig' => 'application/x-xfig',
+        'fli' => 'video/x-fli',
+        'flo' => 'application/vnd.micrografx.flo',
+        'flv' => 'video/x-flv',
+        'flw' => 'application/vnd.kde.kivio',
+        'flx' => 'text/vnd.fmi.flexstor',
+        'fly' => 'text/vnd.fly',
+        'fm' => 'application/vnd.framemaker',
+        'fnc' => 'application/vnd.frogans.fnc',
+        'for' => 'text/x-fortran',
+        'fpx' => 'image/vnd.fpx',
+        'frame' => 'application/vnd.framemaker',
+        'fsc' => 'application/vnd.fsc.weblaunch',
+        'fst' => 'image/vnd.fst',
+        'ftc' => 'application/vnd.fluxtime.clip',
+        'fti' => 'application/vnd.anser-web-funds-transfer-initiation',
+        'fvt' => 'video/vnd.fvt',
+        'fxp' => 'application/vnd.adobe.fxp',
+        'fxpl' => 'application/vnd.adobe.fxp',
+        'fzs' => 'application/vnd.fuzzysheet',
+        'g2w' => 'application/vnd.geoplan',
+        'g3' => 'image/g3fax',
+        'g3w' => 'application/vnd.geospace',
+        'gac' => 'application/vnd.groove-account',
+        'gdl' => 'model/vnd.gdl',
+        'geo' => 'application/vnd.dynageo',
+        'gex' => 'application/vnd.geometry-explorer',
+        'ggb' => 'application/vnd.geogebra.file',
+        'ggt' => 'application/vnd.geogebra.tool',
+        'ghf' => 'application/vnd.groove-help',
+        'gif' => 'image/gif',
+        'gim' => 'application/vnd.groove-identity-message',
+        'gmx' => 'application/vnd.gmx',
+        'gnumeric' => 'application/x-gnumeric',
+        'gph' => 'application/vnd.flographit',
+        'gqf' => 'application/vnd.grafeq',
+        'gqs' => 'application/vnd.grafeq',
+        'gram' => 'application/srgs',
+        'gre' => 'application/vnd.geometry-explorer',
+        'grv' => 'application/vnd.groove-injector',
+        'grxml' => 'application/srgs+xml',
+        'gsf' => 'application/x-font-ghostscript',
+        'gtar' => 'application/x-gtar',
+        'gtm' => 'application/vnd.groove-tool-message',
+        'gtw' => 'model/vnd.gtw',
+        'gv' => 'text/vnd.graphviz',
+        'gxt' => 'application/vnd.geonext',
+        'h' => 'text/x-c',
+        'h261' => 'video/h261',
+        'h263' => 'video/h263',
+        'h264' => 'video/h264',
+        'hal' => 'application/vnd.hal+xml',
+        'hbci' => 'application/vnd.hbci',
+        'hdf' => 'application/x-hdf',
+        'hh' => 'text/x-c',
+        'hlp' => 'application/winhlp',
+        'hpgl' => 'application/vnd.hp-hpgl',
+        'hpid' => 'application/vnd.hp-hpid',
+        'hps' => 'application/vnd.hp-hps',
+        'hqx' => 'application/mac-binhex40',
+        'hta' => 'application/octet-stream',
+        'htc' => 'text/html',
+        'htke' => 'application/vnd.kenameaapp',
+        'htm' => 'text/html',
+        'html' => 'text/html',
+        'hvd' => 'application/vnd.yamaha.hv-dic',
+        'hvp' => 'application/vnd.yamaha.hv-voice',
+        'hvs' => 'application/vnd.yamaha.hv-script',
+        'i2g' => 'application/vnd.intergeo',
+        'icc' => 'application/vnd.iccprofile',
+        'ice' => 'x-conference/x-cooltalk',
+        'icm' => 'application/vnd.iccprofile',
+        'ico' => 'image/x-icon',
+        'ics' => 'text/calendar',
+        'ief' => 'image/ief',
+        'ifb' => 'text/calendar',
+        'ifm' => 'application/vnd.shana.informed.formdata',
+        'iges' => 'model/iges',
+        'igl' => 'application/vnd.igloader',
+        'igm' => 'application/vnd.insors.igm',
+        'igs' => 'model/iges',
+        'igx' => 'application/vnd.micrografx.igx',
+        'iif' => 'application/vnd.shana.informed.interchange',
+        'imp' => 'application/vnd.accpac.simply.imp',
+        'ims' => 'application/vnd.ms-ims',
+        'in' => 'text/plain',
+        'ini' => 'text/plain',
+        'ipfix' => 'application/ipfix',
+        'ipk' => 'application/vnd.shana.informed.package',
+        'irm' => 'application/vnd.ibm.rights-management',
+        'irp' => 'application/vnd.irepository.package+xml',
+        'iso' => 'application/octet-stream',
+        'itp' => 'application/vnd.shana.informed.formtemplate',
+        'ivp' => 'application/vnd.immervision-ivp',
+        'ivu' => 'application/vnd.immervision-ivu',
+        'jad' => 'text/vnd.sun.j2me.app-descriptor',
+        'jam' => 'application/vnd.jam',
+        'jar' => 'application/java-archive',
+        'java' => 'text/x-java-source',
+        'jisp' => 'application/vnd.jisp',
+        'jlt' => 'application/vnd.hp-jlyt',
+        'jnlp' => 'application/x-java-jnlp-file',
+        'joda' => 'application/vnd.joost.joda-archive',
+        'jpe' => 'image/jpeg',
+        'jpeg' => 'image/jpeg',
+        'jpg' => 'image/jpeg',
+        'jpgm' => 'video/jpm',
+        'jpgv' => 'video/jpeg',
+        'jpm' => 'video/jpm',
+        'js' => 'text/javascript',
+        'json' => 'application/json',
+        'kar' => 'audio/midi',
+        'karbon' => 'application/vnd.kde.karbon',
+        'kfo' => 'application/vnd.kde.kformula',
+        'kia' => 'application/vnd.kidspiration',
+        'kml' => 'application/vnd.google-earth.kml+xml',
+        'kmz' => 'application/vnd.google-earth.kmz',
+        'kne' => 'application/vnd.kinar',
+        'knp' => 'application/vnd.kinar',
+        'kon' => 'application/vnd.kde.kontour',
+        'kpr' => 'application/vnd.kde.kpresenter',
+        'kpt' => 'application/vnd.kde.kpresenter',
+        'ksp' => 'application/vnd.kde.kspread',
+        'ktr' => 'application/vnd.kahootz',
+        'ktx' => 'image/ktx',
+        'ktz' => 'application/vnd.kahootz',
+        'kwd' => 'application/vnd.kde.kword',
+        'kwt' => 'application/vnd.kde.kword',
+        'lasxml' => 'application/vnd.las.las+xml',
+        'latex' => 'application/x-latex',
+        'lbd' => 'application/vnd.llamagraphics.life-balance.desktop',
+        'lbe' => 'application/vnd.llamagraphics.life-balance.exchange+xml',
+        'les' => 'application/vnd.hhe.lesson-player',
+        'lha' => 'application/octet-stream',
+        'link66' => 'application/vnd.route66.link66+xml',
+        'list' => 'text/plain',
+        'list3820' => 'application/vnd.ibm.modcap',
+        'listafp' => 'application/vnd.ibm.modcap',
+        'log' => 'text/plain',
+        'lostxml' => 'application/lost+xml',
+        'lrf' => 'application/octet-stream',
+        'lrm' => 'application/vnd.ms-lrm',
+        'ltf' => 'application/vnd.frogans.ltf',
+        'lvp' => 'audio/vnd.lucent.voice',
+        'lwp' => 'application/vnd.lotus-wordpro',
+        'lzh' => 'application/octet-stream',
+        'm13' => 'application/x-msmediaview',
+        'm14' => 'application/x-msmediaview',
+        'm1v' => 'video/mpeg',
+        'm21' => 'application/mp21',
+        'm2a' => 'audio/mpeg',
+        'm2v' => 'video/mpeg',
+        'm3a' => 'audio/mpeg',
+        'm3u' => 'audio/x-mpegurl',
+        'm3u8' => 'application/vnd.apple.mpegurl',
+        'm4a' => 'audio/mp4',
+        'm4u' => 'video/vnd.mpegurl',
+        'm4v' => 'video/mp4',
+        'ma' => 'application/mathematica',
+        'mads' => 'application/mads+xml',
+        'mag' => 'application/vnd.ecowin.chart',
+        'maker' => 'application/vnd.framemaker',
+        'man' => 'text/troff',
+        'mathml' => 'application/mathml+xml',
+        'mb' => 'application/mathematica',
+        'mbk' => 'application/vnd.mobius.mbk',
+        'mbox' => 'application/mbox',
+        'mc1' => 'application/vnd.medcalcdata',
+        'mcd' => 'application/vnd.mcd',
+        'mcurl' => 'text/vnd.curl.mcurl',
+        'mdb' => 'application/x-msaccess',
+        'mdi' => 'image/vnd.ms-modi',
+        'me' => 'text/troff',
+        'mesh' => 'model/mesh',
+        'meta4' => 'application/metalink4+xml',
+        'mets' => 'application/mets+xml',
+        'mfm' => 'application/vnd.mfmp',
+        'mgp' => 'application/vnd.osgeo.mapguide.package',
+        'mgz' => 'application/vnd.proteus.magazine',
+        'mid' => 'audio/midi',
+        'midi' => 'audio/midi',
+        'mif' => 'application/vnd.mif',
+        'mime' => 'message/rfc822',
+        'mj2' => 'video/mj2',
+        'mjp2' => 'video/mj2',
+        'mlp' => 'application/vnd.dolby.mlp',
+        'mmd' => 'application/vnd.chipnuts.karaoke-mmd',
+        'mmf' => 'application/vnd.smaf',
+        'mmr' => 'image/vnd.fujixerox.edmics-mmr',
+        'mny' => 'application/x-msmoney',
+        'mobi' => 'application/x-mobipocket-ebook',
+        'mods' => 'application/mods+xml',
+        'mov' => 'video/quicktime',
+        'movie' => 'video/x-sgi-movie',
+        'mp2' => 'audio/mpeg',
+        'mp21' => 'application/mp21',
+        'mp2a' => 'audio/mpeg',
+        'mp3' => 'audio/mpeg',
+        'mp4' => 'video/mp4',
+        'mp4a' => 'audio/mp4',
+        'mp4s' => 'application/mp4',
+        'mp4v' => 'video/mp4',
+        'mpc' => 'application/vnd.mophun.certificate',
+        'mpe' => 'video/mpeg',
+        'mpeg' => 'video/mpeg',
+        'mpg' => 'video/mpeg',
+        'mpg4' => 'video/mp4',
+        'mpga' => 'audio/mpeg',
+        'mpkg' => 'application/vnd.apple.installer+xml',
+        'mpm' => 'application/vnd.blueice.multipass',
+        'mpn' => 'application/vnd.mophun.application',
+        'mpp' => 'application/vnd.ms-project',
+        'mpt' => 'application/vnd.ms-project',
+        'mpy' => 'application/vnd.ibm.minipay',
+        'mqy' => 'application/vnd.mobius.mqy',
+        'mrc' => 'application/marc',
+        'mrcx' => 'application/marcxml+xml',
+        'ms' => 'text/troff',
+        'mscml' => 'application/mediaservercontrol+xml',
+        'mseed' => 'application/vnd.fdsn.mseed',
+        'mseq' => 'application/vnd.mseq',
+        'msf' => 'application/vnd.epson.msf',
+        'msh' => 'model/mesh',
+        'msi' => 'application/x-msdownload',
+        'msl' => 'application/vnd.mobius.msl',
+        'msty' => 'application/vnd.muvee.style',
+        'mts' => 'model/vnd.mts',
+        'mus' => 'application/vnd.musician',
+        'musicxml' => 'application/vnd.recordare.musicxml+xml',
+        'mvb' => 'application/x-msmediaview',
+        'mwf' => 'application/vnd.mfer',
+        'mxf' => 'application/mxf',
+        'mxl' => 'application/vnd.recordare.musicxml',
+        'mxml' => 'application/xv+xml',
+        'mxs' => 'application/vnd.triscape.mxs',
+        'mxu' => 'video/vnd.mpegurl',
+        'n-gage' => 'application/vnd.nokia.n-gage.symbian.install',
+        'n3' => 'text/n3',
+        'nb' => 'application/mathematica',
+        'nbp' => 'application/vnd.wolfram.player',
+        'nc' => 'application/x-netcdf',
+        'ncx' => 'application/x-dtbncx+xml',
+        'ngdat' => 'application/vnd.nokia.n-gage.data',
+        'nlu' => 'application/vnd.neurolanguage.nlu',
+        'nml' => 'application/vnd.enliven',
+        'nnd' => 'application/vnd.noblenet-directory',
+        'nns' => 'application/vnd.noblenet-sealer',
+        'nnw' => 'application/vnd.noblenet-web',
+        'npx' => 'image/vnd.net-fpx',
+        'nsf' => 'application/vnd.lotus-notes',
+        'oa2' => 'application/vnd.fujitsu.oasys2',
+        'oa3' => 'application/vnd.fujitsu.oasys3',
+        'oas' => 'application/vnd.fujitsu.oasys',
+        'obd' => 'application/x-msbinder',
+        'oda' => 'application/oda',
+        'odb' => 'application/vnd.oasis.opendocument.database',
+        'odc' => 'application/vnd.oasis.opendocument.chart',
+        'odf' => 'application/vnd.oasis.opendocument.formula',
+        'odft' => 'application/vnd.oasis.opendocument.formula-template',
+        'odg' => 'application/vnd.oasis.opendocument.graphics',
+        'odi' => 'application/vnd.oasis.opendocument.image',
+        'odm' => 'application/vnd.oasis.opendocument.text-master',
+        'odp' => 'application/vnd.oasis.opendocument.presentation',
+        'ods' => 'application/vnd.oasis.opendocument.spreadsheet',
+        'odt' => 'application/vnd.oasis.opendocument.text',
+        'oga' => 'audio/ogg',
+        'ogg' => 'audio/ogg',
+        'ogv' => 'video/ogg',
+        'ogx' => 'application/ogg',
+        'onepkg' => 'application/onenote',
+        'onetmp' => 'application/onenote',
+        'onetoc' => 'application/onenote',
+        'onetoc2' => 'application/onenote',
+        'opf' => 'application/oebps-package+xml',
+        'oprc' => 'application/vnd.palm',
+        'org' => 'application/vnd.lotus-organizer',
+        'osf' => 'application/vnd.yamaha.openscoreformat',
+        'osfpvg' => 'application/vnd.yamaha.openscoreformat.osfpvg+xml',
+        'otc' => 'application/vnd.oasis.opendocument.chart-template',
+        'otf' => 'application/x-font-otf',
+        'otg' => 'application/vnd.oasis.opendocument.graphics-template',
+        'oth' => 'application/vnd.oasis.opendocument.text-web',
+        'oti' => 'application/vnd.oasis.opendocument.image-template',
+        'otp' => 'application/vnd.oasis.opendocument.presentation-template',
+        'ots' => 'application/vnd.oasis.opendocument.spreadsheet-template',
+        'ott' => 'application/vnd.oasis.opendocument.text-template',
+        'oxt' => 'application/vnd.openofficeorg.extension',
+        'p' => 'text/x-pascal',
+        'p10' => 'application/pkcs10',
+        'p12' => 'application/x-pkcs12',
+        'p7b' => 'application/x-pkcs7-certificates',
+        'p7c' => 'application/pkcs7-mime',
+        'p7m' => 'application/pkcs7-mime',
+        'p7r' => 'application/x-pkcs7-certreqresp',
+        'p7s' => 'application/pkcs7-signature',
+        'p8' => 'application/pkcs8',
+        'pas' => 'text/x-pascal',
+        'paw' => 'application/vnd.pawaafile',
+        'pbd' => 'application/vnd.powerbuilder6',
+        'pbm' => 'image/x-portable-bitmap',
+        'pcf' => 'application/x-font-pcf',
+        'pcl' => 'application/vnd.hp-pcl',
+        'pclxl' => 'application/vnd.hp-pclxl',
+        'pct' => 'image/x-pict',
+        'pcurl' => 'application/vnd.curl.pcurl',
+        'pcx' => 'image/x-pcx',
+        'pdb' => 'application/vnd.palm',
+        'pdf' => 'application/pdf',
+        'pfa' => 'application/x-font-type1',
+        'pfb' => 'application/x-font-type1',
+        'pfm' => 'application/x-font-type1',
+        'pfr' => 'application/font-tdpfr',
+        'pfx' => 'application/x-pkcs12',
+        'pgm' => 'image/x-portable-graymap',
+        'pgn' => 'application/x-chess-pgn',
+        'pgp' => 'application/pgp-encrypted',
+        'php' => 'text/x-php',
+        'phps' => 'application/x-httpd-phps',
+        'pic' => 'image/x-pict',
+        'pkg' => 'application/octet-stream',
+        'pki' => 'application/pkixcmp',
+        'pkipath' => 'application/pkix-pkipath',
+        'plb' => 'application/vnd.3gpp.pic-bw-large',
+        'plc' => 'application/vnd.mobius.plc',
+        'plf' => 'application/vnd.pocketlearn',
+        'pls' => 'application/pls+xml',
+        'pml' => 'application/vnd.ctc-posml',
+        'png' => 'image/png',
+        'pnm' => 'image/x-portable-anymap',
+        'portpkg' => 'application/vnd.macports.portpkg',
+        'pot' => 'application/vnd.ms-powerpoint',
+        'potm' => 'application/vnd.ms-powerpoint.template.macroenabled.12',
+        'potx' => 'application/vnd.openxmlformats-officedocument.presentationml.template',
+        'ppam' => 'application/vnd.ms-powerpoint.addin.macroenabled.12',
+        'ppd' => 'application/vnd.cups-ppd',
+        'ppm' => 'image/x-portable-pixmap',
+        'pps' => 'application/vnd.ms-powerpoint',
+        'ppsm' => 'application/vnd.ms-powerpoint.slideshow.macroenabled.12',
+        'ppsx' => 'application/vnd.openxmlformats-officedocument.presentationml.slideshow',
+        'ppt' => 'application/vnd.ms-powerpoint',
+        'pptm' => 'application/vnd.ms-powerpoint.presentation.macroenabled.12',
+        'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
+        'pqa' => 'application/vnd.palm',
+        'prc' => 'application/x-mobipocket-ebook',
+        'pre' => 'application/vnd.lotus-freelance',
+        'prf' => 'application/pics-rules',
+        'ps' => 'application/postscript',
+        'psb' => 'application/vnd.3gpp.pic-bw-small',
+        'psd' => 'image/vnd.adobe.photoshop',
+        'psf' => 'application/x-font-linux-psf',
+        'pskcxml' => 'application/pskc+xml',
+        'ptid' => 'application/vnd.pvi.ptid1',
+        'pub' => 'application/x-mspublisher',
+        'pvb' => 'application/vnd.3gpp.pic-bw-var',
+        'pwn' => 'application/vnd.3m.post-it-notes',
+        'pya' => 'audio/vnd.ms-playready.media.pya',
+        'pyv' => 'video/vnd.ms-playready.media.pyv',
+        'qam' => 'application/vnd.epson.quickanime',
+        'qbo' => 'application/vnd.intu.qbo',
+        'qfx' => 'application/vnd.intu.qfx',
+        'qps' => 'application/vnd.publishare-delta-tree',
+        'qt' => 'video/quicktime',
+        'qwd' => 'application/vnd.quark.quarkxpress',
+        'qwt' => 'application/vnd.quark.quarkxpress',
+        'qxb' => 'application/vnd.quark.quarkxpress',
+        'qxd' => 'application/vnd.quark.quarkxpress',
+        'qxl' => 'application/vnd.quark.quarkxpress',
+        'qxt' => 'application/vnd.quark.quarkxpress',
+        'ra' => 'audio/x-pn-realaudio',
+        'ram' => 'audio/x-pn-realaudio',
+        'rar' => 'application/x-rar-compressed',
+        'ras' => 'image/x-cmu-raster',
+        'rb' => 'text/plain',
+        'rcprofile' => 'application/vnd.ipunplugged.rcprofile',
+        'rdf' => 'application/rdf+xml',
+        'rdz' => 'application/vnd.data-vision.rdz',
+        'rep' => 'application/vnd.businessobjects',
+        'res' => 'application/x-dtbresource+xml',
+        'resx' => 'text/xml',
+        'rgb' => 'image/x-rgb',
+        'rif' => 'application/reginfo+xml',
+        'rip' => 'audio/vnd.rip',
+        'rl' => 'application/resource-lists+xml',
+        'rlc' => 'image/vnd.fujixerox.edmics-rlc',
+        'rld' => 'application/resource-lists-diff+xml',
+        'rm' => 'application/vnd.rn-realmedia',
+        'rmi' => 'audio/midi',
+        'rmp' => 'audio/x-pn-realaudio-plugin',
+        'rms' => 'application/vnd.jcp.javame.midlet-rms',
+        'rnc' => 'application/relax-ng-compact-syntax',
+        'roff' => 'text/troff',
+        'rp9' => 'application/vnd.cloanto.rp9',
+        'rpss' => 'application/vnd.nokia.radio-presets',
+        'rpst' => 'application/vnd.nokia.radio-preset',
+        'rq' => 'application/sparql-query',
+        'rs' => 'application/rls-services+xml',
+        'rsd' => 'application/rsd+xml',
+        'rss' => 'application/rss+xml',
+        'rtf' => 'application/rtf',
+        'rtx' => 'text/richtext',
+        's' => 'text/x-asm',
+        'saf' => 'application/vnd.yamaha.smaf-audio',
+        'sbml' => 'application/sbml+xml',
+        'sc' => 'application/vnd.ibm.secure-container',
+        'scd' => 'application/x-msschedule',
+        'scm' => 'application/vnd.lotus-screencam',
+        'scq' => 'application/scvp-cv-request',
+        'scs' => 'application/scvp-cv-response',
+        'scurl' => 'text/vnd.curl.scurl',
+        'sda' => 'application/vnd.stardivision.draw',
+        'sdc' => 'application/vnd.stardivision.calc',
+        'sdd' => 'application/vnd.stardivision.impress',
+        'sdkd' => 'application/vnd.solent.sdkm+xml',
+        'sdkm' => 'application/vnd.solent.sdkm+xml',
+        'sdp' => 'application/sdp',
+        'sdw' => 'application/vnd.stardivision.writer',
+        'see' => 'application/vnd.seemail',
+        'seed' => 'application/vnd.fdsn.seed',
+        'sema' => 'application/vnd.sema',
+        'semd' => 'application/vnd.semd',
+        'semf' => 'application/vnd.semf',
+        'ser' => 'application/java-serialized-object',
+        'setpay' => 'application/set-payment-initiation',
+        'setreg' => 'application/set-registration-initiation',
+        'sfd-hdstx' => 'application/vnd.hydrostatix.sof-data',
+        'sfs' => 'application/vnd.spotfire.sfs',
+        'sgl' => 'application/vnd.stardivision.writer-global',
+        'sgm' => 'text/sgml',
+        'sgml' => 'text/sgml',
+        'sh' => 'application/x-sh',
+        'shar' => 'application/x-shar',
+        'shf' => 'application/shf+xml',
+        'sig' => 'application/pgp-signature',
+        'silo' => 'model/mesh',
+        'sis' => 'application/vnd.symbian.install',
+        'sisx' => 'application/vnd.symbian.install',
+        'sit' => 'application/x-stuffit',
+        'sitx' => 'application/x-stuffitx',
+        'skd' => 'application/vnd.koan',
+        'skm' => 'application/vnd.koan',
+        'skp' => 'application/vnd.koan',
+        'skt' => 'application/vnd.koan',
+        'sldm' => 'application/vnd.ms-powerpoint.slide.macroenabled.12',
+        'sldx' => 'application/vnd.openxmlformats-officedocument.presentationml.slide',
+        'slt' => 'application/vnd.epson.salt',
+        'sm' => 'application/vnd.stepmania.stepchart',
+        'smf' => 'application/vnd.stardivision.math',
+        'smi' => 'application/smil+xml',
+        'smil' => 'application/smil+xml',
+        'snd' => 'audio/basic',
+        'snf' => 'application/x-font-snf',
+        'so' => 'application/octet-stream',
+        'spc' => 'application/x-pkcs7-certificates',
+        'spf' => 'application/vnd.yamaha.smaf-phrase',
+        'spl' => 'application/x-futuresplash',
+        'spot' => 'text/vnd.in3d.spot',
+        'spp' => 'application/scvp-vp-response',
+        'spq' => 'application/scvp-vp-request',
+        'spx' => 'audio/ogg',
+        'src' => 'application/x-wais-source',
+        'sru' => 'application/sru+xml',
+        'srx' => 'application/sparql-results+xml',
+        'sse' => 'application/vnd.kodak-descriptor',
+        'ssf' => 'application/vnd.epson.ssf',
+        'ssml' => 'application/ssml+xml',
+        'st' => 'application/vnd.sailingtracker.track',
+        'stc' => 'application/vnd.sun.xml.calc.template',
+        'std' => 'application/vnd.sun.xml.draw.template',
+        'stf' => 'application/vnd.wt.stf',
+        'sti' => 'application/vnd.sun.xml.impress.template',
+        'stk' => 'application/hyperstudio',
+        'stl' => 'application/vnd.ms-pki.stl',
+        'str' => 'application/vnd.pg.format',
+        'stw' => 'application/vnd.sun.xml.writer.template',
+        'sub' => 'image/vnd.dvb.subtitle',
+        'sus' => 'application/vnd.sus-calendar',
+        'susp' => 'application/vnd.sus-calendar',
+        'sv4cpio' => 'application/x-sv4cpio',
+        'sv4crc' => 'application/x-sv4crc',
+        'svc' => 'application/vnd.dvb.service',
+        'svd' => 'application/vnd.svd',
+        'svg' => 'image/svg+xml',
+        'svgz' => 'image/svg+xml',
+        'swa' => 'application/x-director',
+        'swf' => 'application/x-shockwave-flash',
+        'swi' => 'application/vnd.aristanetworks.swi',
+        'sxc' => 'application/vnd.sun.xml.calc',
+        'sxd' => 'application/vnd.sun.xml.draw',
+        'sxg' => 'application/vnd.sun.xml.writer.global',
+        'sxi' => 'application/vnd.sun.xml.impress',
+        'sxm' => 'application/vnd.sun.xml.math',
+        'sxw' => 'application/vnd.sun.xml.writer',
+        't' => 'text/troff',
+        'tao' => 'application/vnd.tao.intent-module-archive',
+        'tar' => 'application/x-tar',
+        'tcap' => 'application/vnd.3gpp2.tcap',
+        'tcl' => 'application/x-tcl',
+        'teacher' => 'application/vnd.smart.teacher',
+        'tei' => 'application/tei+xml',
+        'teicorpus' => 'application/tei+xml',
+        'tex' => 'application/x-tex',
+        'texi' => 'application/x-texinfo',
+        'texinfo' => 'application/x-texinfo',
+        'text' => 'text/plain',
+        'tfi' => 'application/thraud+xml',
+        'tfm' => 'application/x-tex-tfm',
+        'thmx' => 'application/vnd.ms-officetheme',
+        'tif' => 'image/tiff',
+        'tiff' => 'image/tiff',
+        'tmo' => 'application/vnd.tmobile-livetv',
+        'torrent' => 'application/x-bittorrent',
+        'tpl' => 'application/vnd.groove-tool-template',
+        'tpt' => 'application/vnd.trid.tpt',
+        'tr' => 'text/troff',
+        'tra' => 'application/vnd.trueapp',
+        'trm' => 'application/x-msterminal',
+        'tsd' => 'application/timestamped-data',
+        'tsv' => 'text/tab-separated-values',
+        'ttc' => 'application/x-font-ttf',
+        'ttf' => 'application/x-font-ttf',
+        'ttl' => 'text/turtle',
+        'twd' => 'application/vnd.simtech-mindmapper',
+        'twds' => 'application/vnd.simtech-mindmapper',
+        'txd' => 'application/vnd.genomatix.tuxedo',
+        'txf' => 'application/vnd.mobius.txf',
+        'txt' => 'text/plain',
+        'u32' => 'application/x-authorware-bin',
+        'udeb' => 'application/x-debian-package',
+        'ufd' => 'application/vnd.ufdl',
+        'ufdl' => 'application/vnd.ufdl',
+        'umj' => 'application/vnd.umajin',
+        'unityweb' => 'application/vnd.unity',
+        'uoml' => 'application/vnd.uoml+xml',
+        'uri' => 'text/uri-list',
+        'uris' => 'text/uri-list',
+        'urls' => 'text/uri-list',
+        'ustar' => 'application/x-ustar',
+        'utz' => 'application/vnd.uiq.theme',
+        'uu' => 'text/x-uuencode',
+        'uva' => 'audio/vnd.dece.audio',
+        'uvd' => 'application/vnd.dece.data',
+        'uvf' => 'application/vnd.dece.data',
+        'uvg' => 'image/vnd.dece.graphic',
+        'uvh' => 'video/vnd.dece.hd',
+        'uvi' => 'image/vnd.dece.graphic',
+        'uvm' => 'video/vnd.dece.mobile',
+        'uvp' => 'video/vnd.dece.pd',
+        'uvs' => 'video/vnd.dece.sd',
+        'uvt' => 'application/vnd.dece.ttml+xml',
+        'uvu' => 'video/vnd.uvvu.mp4',
+        'uvv' => 'video/vnd.dece.video',
+        'uvva' => 'audio/vnd.dece.audio',
+        'uvvd' => 'application/vnd.dece.data',
+        'uvvf' => 'application/vnd.dece.data',
+        'uvvg' => 'image/vnd.dece.graphic',
+        'uvvh' => 'video/vnd.dece.hd',
+        'uvvi' => 'image/vnd.dece.graphic',
+        'uvvm' => 'video/vnd.dece.mobile',
+        'uvvp' => 'video/vnd.dece.pd',
+        'uvvs' => 'video/vnd.dece.sd',
+        'uvvt' => 'application/vnd.dece.ttml+xml',
+        'uvvu' => 'video/vnd.uvvu.mp4',
+        'uvvv' => 'video/vnd.dece.video',
+        'uvvx' => 'application/vnd.dece.unspecified',
+        'uvx' => 'application/vnd.dece.unspecified',
+        'vcd' => 'application/x-cdlink',
+        'vcf' => 'text/x-vcard',
+        'vcg' => 'application/vnd.groove-vcard',
+        'vcs' => 'text/x-vcalendar',
+        'vcx' => 'application/vnd.vcx',
+        'vis' => 'application/vnd.visionary',
+        'viv' => 'video/vnd.vivo',
+        'vor' => 'application/vnd.stardivision.writer',
+        'vox' => 'application/x-authorware-bin',
+        'vrml' => 'model/vrml',
+        'vsd' => 'application/vnd.visio',
+        'vsf' => 'application/vnd.vsf',
+        'vss' => 'application/vnd.visio',
+        'vst' => 'application/vnd.visio',
+        'vsw' => 'application/vnd.visio',
+        'vtu' => 'model/vnd.vtu',
+        'vxml' => 'application/voicexml+xml',
+        'w3d' => 'application/x-director',
+        'wad' => 'application/x-doom',
+        'wav' => 'audio/x-wav',
+        'wax' => 'audio/x-ms-wax',
+        'wbmp' => 'image/vnd.wap.wbmp',
+        'wbs' => 'application/vnd.criticaltools.wbs+xml',
+        'wbxml' => 'application/vnd.wap.wbxml',
+        'wcm' => 'application/vnd.ms-works',
+        'wdb' => 'application/vnd.ms-works',
+        'weba' => 'audio/webm',
+        'webm' => 'video/webm',
+        'webp' => 'image/webp',
+        'wg' => 'application/vnd.pmi.widget',
+        'wgt' => 'application/widget',
+        'wks' => 'application/vnd.ms-works',
+        'wm' => 'video/x-ms-wm',
+        'wma' => 'audio/x-ms-wma',
+        'wmd' => 'application/x-ms-wmd',
+        'wmf' => 'application/x-msmetafile',
+        'wml' => 'text/vnd.wap.wml',
+        'wmlc' => 'application/vnd.wap.wmlc',
+        'wmls' => 'text/vnd.wap.wmlscript',
+        'wmlsc' => 'application/vnd.wap.wmlscriptc',
+        'wmv' => 'video/x-ms-wmv',
+        'wmx' => 'video/x-ms-wmx',
+        'wmz' => 'application/x-ms-wmz',
+        'woff' => 'application/x-font-woff',
+        'wpd' => 'application/vnd.wordperfect',
+        'wpl' => 'application/vnd.ms-wpl',
+        'wps' => 'application/vnd.ms-works',
+        'wqd' => 'application/vnd.wqd',
+        'wri' => 'application/x-mswrite',
+        'wrl' => 'model/vrml',
+        'wsdl' => 'application/wsdl+xml',
+        'wspolicy' => 'application/wspolicy+xml',
+        'wtb' => 'application/vnd.webturbo',
+        'wvx' => 'video/x-ms-wvx',
+        'x32' => 'application/x-authorware-bin',
+        'x3d' => 'application/vnd.hzn-3d-crossword',
+        'xap' => 'application/x-silverlight-app',
+        'xar' => 'application/vnd.xara',
+        'xbap' => 'application/x-ms-xbap',
+        'xbd' => 'application/vnd.fujixerox.docuworks.binder',
+        'xbm' => 'image/x-xbitmap',
+        'xdf' => 'application/xcap-diff+xml',
+        'xdm' => 'application/vnd.syncml.dm+xml',
+        'xdp' => 'application/vnd.adobe.xdp+xml',
+        'xdssc' => 'application/dssc+xml',
+        'xdw' => 'application/vnd.fujixerox.docuworks',
+        'xenc' => 'application/xenc+xml',
+        'xer' => 'application/patch-ops-error+xml',
+        'xfdf' => 'application/vnd.adobe.xfdf',
+        'xfdl' => 'application/vnd.xfdl',
+        'xht' => 'application/xhtml+xml',
+        'xhtml' => 'application/xhtml+xml',
+        'xhvml' => 'application/xv+xml',
+        'xif' => 'image/vnd.xiff',
+        'xla' => 'application/vnd.ms-excel',
+        'xlam' => 'application/vnd.ms-excel.addin.macroenabled.12',
+        'xlc' => 'application/vnd.ms-excel',
+        'xlm' => 'application/vnd.ms-excel',
+        'xls' => 'application/vnd.ms-excel',
+        'xlsb' => 'application/vnd.ms-excel.sheet.binary.macroenabled.12',
+        'xlsm' => 'application/vnd.ms-excel.sheet.macroenabled.12',
+        'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+        'xlt' => 'application/vnd.ms-excel',
+        'xltm' => 'application/vnd.ms-excel.template.macroenabled.12',
+        'xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.template',
+        'xlw' => 'application/vnd.ms-excel',
+        'xml' => 'application/xml',
+        'xo' => 'application/vnd.olpc-sugar',
+        'xop' => 'application/xop+xml',
+        'xpi' => 'application/x-xpinstall',
+        'xpm' => 'image/x-xpixmap',
+        'xpr' => 'application/vnd.is-xpr',
+        'xps' => 'application/vnd.ms-xpsdocument',
+        'xpw' => 'application/vnd.intercon.formnet',
+        'xpx' => 'application/vnd.intercon.formnet',
+        'xsl' => 'application/xml',
+        'xslt' => 'application/xslt+xml',
+        'xsm' => 'application/vnd.syncml+xml',
+        'xspf' => 'application/xspf+xml',
+        'xul' => 'application/vnd.mozilla.xul+xml',
+        'xvm' => 'application/xv+xml',
+        'xvml' => 'application/xv+xml',
+        'xwd' => 'image/x-xwindowdump',
+        'xyz' => 'chemical/x-xyz',
+        'yaml' => 'text/yaml',
+        'yang' => 'application/yang',
+        'yin' => 'application/yin+xml',
+        'yml' => 'text/yaml',
+        'zaz' => 'application/vnd.zzazz.deck+xml',
+        'zip' => 'application/zip',
+        'zir' => 'application/vnd.zul',
+        'zirz' => 'application/vnd.zul',
+        'zmm' => 'application/vnd.handheld-entertainment+xml'
+    ];
+
+    /**
+     * Get a singleton instance of the class
+     *
+     * @return self
+     * @codeCoverageIgnore
+     */
+    public static function getInstance()
+    {
+        if (!self::$instance) {
+            self::$instance = new self();
+        }
+
+        return self::$instance;
+    }
+
+    /**
+     * Get a mimetype value from a file extension
+     *
+     * @param string $extension File extension
+     *
+     * @return string|null
+     */
+    public function fromExtension($extension)
+    {
+        $extension = strtolower($extension);
+
+        return isset($this->mimetypes[$extension]) ? $this->mimetypes[$extension] : null;
+    }
+
+    /**
+     * Get a mimetype from a filename
+     *
+     * @param string $filename Filename to generate a mimetype from
+     *
+     * @return string|null
+     */
+    public function fromFilename($filename)
+    {
+        return $this->fromExtension(pathinfo($filename, PATHINFO_EXTENSION));
+    }
+}

Facebook/GraphNodes/Collection.php

@@ -0,0 +1,242 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\GraphNodes;
+
+/**
+ * Class Collection
+ *
+ * Modified version of Collection in "illuminate/support" by Taylor Otwell
+ *
+ * @package Facebook
+ */
+
+use ArrayAccess;
+use ArrayIterator;
+use Countable;
+use IteratorAggregate;
+
+class Collection implements ArrayAccess, Countable, IteratorAggregate
+{
+    /**
+     * The items contained in the collection.
+     *
+     * @var array
+     */
+    protected $items = [];
+
+    /**
+     * Create a new collection.
+     *
+     * @param array $items
+     */
+    public function __construct(array $items = [])
+    {
+        $this->items = $items;
+    }
+
+    /**
+     * Gets the value of a field from the Graph node.
+     *
+     * @param string $name    The field to retrieve.
+     * @param mixed  $default The default to return if the field doesn't exist.
+     *
+     * @return mixed
+     */
+    public function getField($name, $default = null)
+    {
+        if (isset($this->items[$name])) {
+            return $this->items[$name];
+        }
+
+        return $default ?: null;
+    }
+
+    /**
+     * Gets the value of the named property for this graph object.
+     *
+     * @param string $name    The property to retrieve.
+     * @param mixed  $default The default to return if the property doesn't exist.
+     *
+     * @return mixed
+     *
+     * @deprecated 5.0.0 getProperty() has been renamed to getField()
+     * @todo v6: Remove this method
+     */
+    public function getProperty($name, $default = null)
+    {
+        return $this->getField($name, $default);
+    }
+
+    /**
+     * Returns a list of all fields set on the object.
+     *
+     * @return array
+     */
+    public function getFieldNames()
+    {
+        return array_keys($this->items);
+    }
+
+    /**
+     * Returns a list of all properties set on the object.
+     *
+     * @return array
+     *
+     * @deprecated 5.0.0 getPropertyNames() has been renamed to getFieldNames()
+     * @todo v6: Remove this method
+     */
+    public function getPropertyNames()
+    {
+        return $this->getFieldNames();
+    }
+
+    /**
+     * Get all of the items in the collection.
+     *
+     * @return array
+     */
+    public function all()
+    {
+        return $this->items;
+    }
+
+    /**
+     * Get the collection of items as a plain array.
+     *
+     * @return array
+     */
+    public function asArray()
+    {
+        return array_map(function ($value) {
+            return $value instanceof Collection ? $value->asArray() : $value;
+        }, $this->items);
+    }
+
+    /**
+     * Run a map over each of the items.
+     *
+     * @param \Closure $callback
+     *
+     * @return static
+     */
+    public function map(\Closure $callback)
+    {
+        return new static(array_map($callback, $this->items, array_keys($this->items)));
+    }
+
+    /**
+     * Get the collection of items as JSON.
+     *
+     * @param int $options
+     *
+     * @return string
+     */
+    public function asJson($options = 0)
+    {
+        return json_encode($this->asArray(), $options);
+    }
+
+    /**
+     * Count the number of items in the collection.
+     *
+     * @return int
+     */
+    public function count()
+    {
+        return count($this->items);
+    }
+
+    /**
+     * Get an iterator for the items.
+     *
+     * @return ArrayIterator
+     */
+    public function getIterator()
+    {
+        return new ArrayIterator($this->items);
+    }
+
+    /**
+     * Determine if an item exists at an offset.
+     *
+     * @param mixed $key
+     *
+     * @return bool
+     */
+    public function offsetExists($key)
+    {
+        return array_key_exists($key, $this->items);
+    }
+
+    /**
+     * Get an item at a given offset.
+     *
+     * @param mixed $key
+     *
+     * @return mixed
+     */
+    public function offsetGet($key)
+    {
+        return $this->items[$key];
+    }
+
+    /**
+     * Set the item at a given offset.
+     *
+     * @param mixed $key
+     * @param mixed $value
+     *
+     * @return void
+     */
+    public function offsetSet($key, $value)
+    {
+        if (is_null($key)) {
+            $this->items[] = $value;
+        } else {
+            $this->items[$key] = $value;
+        }
+    }
+
+    /**
+     * Unset the item at a given offset.
+     *
+     * @param string $key
+     *
+     * @return void
+     */
+    public function offsetUnset($key)
+    {
+        unset($this->items[$key]);
+    }
+
+    /**
+     * Convert the collection to its string representation.
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        return $this->asJson();
+    }
+}

Facebook/GraphNodes/GraphAchievement.php

@@ -0,0 +1,113 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\GraphNodes;
+
+/**
+ * Class GraphAchievement
+ *
+ * @package Facebook
+ */
+
+class GraphAchievement extends GraphNode
+{
+    /**
+     * @var array Maps object key names to Graph object types.
+     */
+    protected static $graphObjectMap = [
+        'from' => '\Facebook\GraphNodes\GraphUser',
+        'application' => '\Facebook\GraphNodes\GraphApplication',
+    ];
+
+    /**
+     * Returns the ID for the achievement.
+     *
+     * @return string|null
+     */
+    public function getId()
+    {
+        return $this->getField('id');
+    }
+
+    /**
+     * Returns the user who achieved this.
+     *
+     * @return GraphUser|null
+     */
+    public function getFrom()
+    {
+        return $this->getField('from');
+    }
+
+    /**
+     * Returns the time at which this was achieved.
+     *
+     * @return \DateTime|null
+     */
+    public function getPublishTime()
+    {
+        return $this->getField('publish_time');
+    }
+
+    /**
+     * Returns the app in which the user achieved this.
+     *
+     * @return GraphApplication|null
+     */
+    public function getApplication()
+    {
+        return $this->getField('application');
+    }
+
+    /**
+     * Returns information about the achievement type this instance is connected with.
+     *
+     * @return array|null
+     */
+    public function getData()
+    {
+        return $this->getField('data');
+    }
+
+    /**
+     * Returns the type of achievement.
+     *
+     * @see https://developers.facebook.com/docs/graph-api/reference/v2.2/achievement
+     *
+     * @return string
+     */
+    public function getType()
+    {
+        return 'game.achievement';
+    }
+
+    /**
+     * Indicates whether gaining the achievement published a feed story for the user.
+     *
+     * @return boolean|null
+     */
+    public function isNoFeedStory()
+    {
+        return $this->getField('no_feed_story');
+    }
+}

Facebook/GraphNodes/GraphAlbum.php

@@ -0,0 +1,183 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\GraphNodes;
+
+/**
+ * Class GraphAlbum
+ *
+ * @package Facebook
+ */
+
+class GraphAlbum extends GraphNode
+{
+    /**
+     * @var array Maps object key names to Graph object types.
+     */
+    protected static $graphObjectMap = [
+        'from' => '\Facebook\GraphNodes\GraphUser',
+        'place' => '\Facebook\GraphNodes\GraphPage',
+    ];
+
+    /**
+     * Returns the ID for the album.
+     *
+     * @return string|null
+     */
+    public function getId()
+    {
+        return $this->getField('id');
+    }
+
+    /**
+     * Returns whether the viewer can upload photos to this album.
+     *
+     * @return boolean|null
+     */
+    public function getCanUpload()
+    {
+        return $this->getField('can_upload');
+    }
+
+    /**
+     * Returns the number of photos in this album.
+     *
+     * @return int|null
+     */
+    public function getCount()
+    {
+        return $this->getField('count');
+    }
+
+    /**
+     * Returns the ID of the album's cover photo.
+     *
+     * @return string|null
+     */
+    public function getCoverPhoto()
+    {
+        return $this->getField('cover_photo');
+    }
+
+    /**
+     * Returns the time the album was initially created.
+     *
+     * @return \DateTime|null
+     */
+    public function getCreatedTime()
+    {
+        return $this->getField('created_time');
+    }
+
+    /**
+     * Returns the time the album was updated.
+     *
+     * @return \DateTime|null
+     */
+    public function getUpdatedTime()
+    {
+        return $this->getField('updated_time');
+    }
+
+    /**
+     * Returns the description of the album.
+     *
+     * @return string|null
+     */
+    public function getDescription()
+    {
+        return $this->getField('description');
+    }
+
+    /**
+     * Returns profile that created the album.
+     *
+     * @return GraphUser|null
+     */
+    public function getFrom()
+    {
+        return $this->getField('from');
+    }
+
+    /**
+     * Returns profile that created the album.
+     *
+     * @return GraphPage|null
+     */
+    public function getPlace()
+    {
+        return $this->getField('place');
+    }
+
+    /**
+     * Returns a link to this album on Facebook.
+     *
+     * @return string|null
+     */
+    public function getLink()
+    {
+        return $this->getField('link');
+    }
+
+    /**
+     * Returns the textual location of the album.
+     *
+     * @return string|null
+     */
+    public function getLocation()
+    {
+        return $this->getField('location');
+    }
+
+    /**
+     * Returns the title of the album.
+     *
+     * @return string|null
+     */
+    public function getName()
+    {
+        return $this->getField('name');
+    }
+
+    /**
+     * Returns the privacy settings for the album.
+     *
+     * @return string|null
+     */
+    public function getPrivacy()
+    {
+        return $this->getField('privacy');
+    }
+
+    /**
+     * Returns the type of the album.
+     *
+     * enum{ profile, mobile, wall, normal, album }
+     *
+     * @return string|null
+     */
+    public function getType()
+    {
+        return $this->getField('type');
+    }
+}

Facebook/GraphNodes/GraphApplication.php

@@ -0,0 +1,43 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\GraphNodes;
+
+/**
+ * Class GraphApplication
+ *
+ * @package Facebook
+ */
+
+class GraphApplication extends GraphNode
+{
+    /**
+     * Returns the ID for the application.
+     *
+     * @return string|null
+     */
+    public function getId()
+    {
+        return $this->getField('id');
+    }
+}

Facebook/GraphNodes/GraphCoverPhoto.php

@@ -0,0 +1,72 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\GraphNodes;
+
+/**
+ * Class GraphCoverPhoto
+ *
+ * @package Facebook
+ */
+class GraphCoverPhoto extends GraphNode
+{
+    /**
+     * Returns the id of cover if it exists
+     *
+     * @return int|null
+     */
+    public function getId()
+    {
+        return $this->getField('id');
+    }
+    
+    /**
+     * Returns the source of cover if it exists
+     *
+     * @return string|null
+     */
+    public function getSource()
+    {
+        return $this->getField('source');
+    }
+
+    /**
+     * Returns the offset_x of cover if it exists
+     *
+     * @return int|null
+     */
+    public function getOffsetX()
+    {
+        return $this->getField('offset_x');
+    }
+
+    /**
+     * Returns the offset_y of cover if it exists
+     *
+     * @return int|null
+     */
+    public function getOffsetY()
+    {
+        return $this->getField('offset_y');
+    }
+}

Facebook/GraphNodes/GraphEdge.php

@@ -0,0 +1,260 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\GraphNodes;
+
+use Facebook\FacebookRequest;
+use Facebook\Url\FacebookUrlManipulator;
+use Facebook\Exceptions\FacebookSDKException;
+
+/**
+ * Class GraphEdge
+ *
+ * @package Facebook
+ */
+class GraphEdge extends Collection
+{
+    /**
+     * @var FacebookRequest The original request that generated this data.
+     */
+    protected $request;
+
+    /**
+     * @var array An array of Graph meta data like pagination, etc.
+     */
+    protected $metaData = [];
+
+    /**
+     * @var string|null The parent Graph edge endpoint that generated the list.
+     */
+    protected $parentEdgeEndpoint;
+
+    /**
+     * @var string|null The subclass of the child GraphNode's.
+     */
+    protected $subclassName;
+
+    /**
+     * Init this collection of GraphNode's.
+     *
+     * @param FacebookRequest $request            The original request that generated this data.
+     * @param array           $data               An array of GraphNode's.
+     * @param array           $metaData           An array of Graph meta data like pagination, etc.
+     * @param string|null     $parentEdgeEndpoint The parent Graph edge endpoint that generated the list.
+     * @param string|null     $subclassName       The subclass of the child GraphNode's.
+     */
+    public function __construct(FacebookRequest $request, array $data = [], array $metaData = [], $parentEdgeEndpoint = null, $subclassName = null)
+    {
+        $this->request = $request;
+        $this->metaData = $metaData;
+        $this->parentEdgeEndpoint = $parentEdgeEndpoint;
+        $this->subclassName = $subclassName;
+
+        parent::__construct($data);
+    }
+
+    /**
+     * Gets the parent Graph edge endpoint that generated the list.
+     *
+     * @return string|null
+     */
+    public function getParentGraphEdge()
+    {
+        return $this->parentEdgeEndpoint;
+    }
+
+    /**
+     * Gets the subclass name that the child GraphNode's are cast as.
+     *
+     * @return string|null
+     */
+    public function getSubClassName()
+    {
+        return $this->subclassName;
+    }
+
+    /**
+     * Returns the raw meta data associated with this GraphEdge.
+     *
+     * @return array
+     */
+    public function getMetaData()
+    {
+        return $this->metaData;
+    }
+
+    /**
+     * Returns the next cursor if it exists.
+     *
+     * @return string|null
+     */
+    public function getNextCursor()
+    {
+        return $this->getCursor('after');
+    }
+
+    /**
+     * Returns the previous cursor if it exists.
+     *
+     * @return string|null
+     */
+    public function getPreviousCursor()
+    {
+        return $this->getCursor('before');
+    }
+
+    /**
+     * Returns the cursor for a specific direction if it exists.
+     *
+     * @param string $direction The direction of the page: after|before
+     *
+     * @return string|null
+     */
+    public function getCursor($direction)
+    {
+        if (isset($this->metaData['paging']['cursors'][$direction])) {
+            return $this->metaData['paging']['cursors'][$direction];
+        }
+
+        return null;
+    }
+
+    /**
+     * Generates a pagination URL based on a cursor.
+     *
+     * @param string $direction The direction of the page: next|previous
+     *
+     * @return string|null
+     *
+     * @throws FacebookSDKException
+     */
+    public function getPaginationUrl($direction)
+    {
+        $this->validateForPagination();
+
+        // Do we have a paging URL?
+        if (isset($this->metaData['paging'][$direction])) {
+            // Graph returns the full URL with all the original params.
+            // We just want the endpoint though.
+            $pageUrl = $this->metaData['paging'][$direction];
+
+            return FacebookUrlManipulator::baseGraphUrlEndpoint($pageUrl);
+        }
+
+        // Do we have a cursor to work with?
+        $cursorDirection = $direction === 'next' ? 'after' : 'before';
+        $cursor = $this->getCursor($cursorDirection);
+        if (!$cursor) {
+            return null;
+        }
+
+        // If we don't know the ID of the parent node, this ain't gonna work.
+        if (!$this->parentEdgeEndpoint) {
+            return null;
+        }
+
+        // We have the parent node ID, paging cursor & original request.
+        // These were the ingredients chosen to create the perfect little URL.
+        $pageUrl = $this->parentEdgeEndpoint . '?' . $cursorDirection . '=' . urlencode($cursor);
+
+        // Pull in the original params
+        $originalUrl = $this->request->getUrl();
+        $pageUrl = FacebookUrlManipulator::mergeUrlParams($originalUrl, $pageUrl);
+
+        return FacebookUrlManipulator::forceSlashPrefix($pageUrl);
+    }
+
+    /**
+     * Validates whether or not we can paginate on this request.
+     *
+     * @throws FacebookSDKException
+     */
+    public function validateForPagination()
+    {
+        if ($this->request->getMethod() !== 'GET') {
+            throw new FacebookSDKException('You can only paginate on a GET request.', 720);
+        }
+    }
+
+    /**
+     * Gets the request object needed to make a next|previous page request.
+     *
+     * @param string $direction The direction of the page: next|previous
+     *
+     * @return FacebookRequest|null
+     *
+     * @throws FacebookSDKException
+     */
+    public function getPaginationRequest($direction)
+    {
+        $pageUrl = $this->getPaginationUrl($direction);
+        if (!$pageUrl) {
+            return null;
+        }
+
+        $newRequest = clone $this->request;
+        $newRequest->setEndpoint($pageUrl);
+
+        return $newRequest;
+    }
+
+    /**
+     * Gets the request object needed to make a "next" page request.
+     *
+     * @return FacebookRequest|null
+     *
+     * @throws FacebookSDKException
+     */
+    public function getNextPageRequest()
+    {
+        return $this->getPaginationRequest('next');
+    }
+
+    /**
+     * Gets the request object needed to make a "previous" page request.
+     *
+     * @return FacebookRequest|null
+     *
+     * @throws FacebookSDKException
+     */
+    public function getPreviousPageRequest()
+    {
+        return $this->getPaginationRequest('previous');
+    }
+
+    /**
+     * The total number of results according to Graph if it exists.
+     *
+     * This will be returned if the summary=true modifier is present in the request.
+     *
+     * @return int|null
+     */
+    public function getTotalCount()
+    {
+        if (isset($this->metaData['summary']['total_count'])) {
+            return $this->metaData['summary']['total_count'];
+        }
+
+        return null;
+    }
+}

Facebook/GraphNodes/GraphEvent.php

@@ -0,0 +1,242 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\GraphNodes;
+
+/**
+ * Class GraphEvent
+ *
+ * @package Facebook
+ */
+class GraphEvent extends GraphNode
+{
+    /**
+     * @var array Maps object key names to GraphNode types.
+     */
+    protected static $graphObjectMap = [
+        'cover' => '\Facebook\GraphNodes\GraphCoverPhoto',
+        'place' => '\Facebook\GraphNodes\GraphPage',
+        'picture' => '\Facebook\GraphNodes\GraphPicture',
+        'parent_group' => '\Facebook\GraphNodes\GraphGroup',
+    ];
+
+    /**
+     * Returns the `id` (The event ID) as string if present.
+     *
+     * @return string|null
+     */
+    public function getId()
+    {
+        return $this->getField('id');
+    }
+
+    /**
+     * Returns the `cover` (Cover picture) as GraphCoverPhoto if present.
+     *
+     * @return GraphCoverPhoto|null
+     */
+    public function getCover()
+    {
+        return $this->getField('cover');
+    }
+
+    /**
+     * Returns the `description` (Long-form description) as string if present.
+     *
+     * @return string|null
+     */
+    public function getDescription()
+    {
+        return $this->getField('description');
+    }
+
+    /**
+     * Returns the `end_time` (End time, if one has been set) as DateTime if present.
+     *
+     * @return \DateTime|null
+     */
+    public function getEndTime()
+    {
+        return $this->getField('end_time');
+    }
+
+    /**
+     * Returns the `is_date_only` (Whether the event only has a date specified, but no time) as bool if present.
+     *
+     * @return bool|null
+     */
+    public function getIsDateOnly()
+    {
+        return $this->getField('is_date_only');
+    }
+
+    /**
+     * Returns the `name` (Event name) as string if present.
+     *
+     * @return string|null
+     */
+    public function getName()
+    {
+        return $this->getField('name');
+    }
+
+    /**
+     * Returns the `owner` (The profile that created the event) as GraphNode if present.
+     *
+     * @return GraphNode|null
+     */
+    public function getOwner()
+    {
+        return $this->getField('owner');
+    }
+
+    /**
+     * Returns the `parent_group` (The group the event belongs to) as GraphGroup if present.
+     *
+     * @return GraphGroup|null
+     */
+    public function getParentGroup()
+    {
+        return $this->getField('parent_group');
+    }
+
+    /**
+     * Returns the `place` (Event Place information) as GraphPage if present.
+     *
+     * @return GraphPage|null
+     */
+    public function getPlace()
+    {
+        return $this->getField('place');
+    }
+
+    /**
+     * Returns the `privacy` (Who can see the event) as string if present.
+     *
+     * @return string|null
+     */
+    public function getPrivacy()
+    {
+        return $this->getField('privacy');
+    }
+
+    /**
+     * Returns the `start_time` (Start time) as DateTime if present.
+     *
+     * @return \DateTime|null
+     */
+    public function getStartTime()
+    {
+        return $this->getField('start_time');
+    }
+
+    /**
+     * Returns the `ticket_uri` (The link users can visit to buy a ticket to this event) as string if present.
+     *
+     * @return string|null
+     */
+    public function getTicketUri()
+    {
+        return $this->getField('ticket_uri');
+    }
+
+    /**
+     * Returns the `timezone` (Timezone) as string if present.
+     *
+     * @return string|null
+     */
+    public function getTimezone()
+    {
+        return $this->getField('timezone');
+    }
+
+    /**
+     * Returns the `updated_time` (Last update time) as DateTime if present.
+     *
+     * @return \DateTime|null
+     */
+    public function getUpdatedTime()
+    {
+        return $this->getField('updated_time');
+    }
+
+    /**
+     * Returns the `picture` (Event picture) as GraphPicture if present.
+     *
+     * @return GraphPicture|null
+     */
+    public function getPicture()
+    {
+        return $this->getField('picture');
+    }
+
+    /**
+     * Returns the `attending_count` (Number of people attending the event) as int if present.
+     *
+     * @return int|null
+     */
+    public function getAttendingCount()
+    {
+        return $this->getField('attending_count');
+    }
+
+    /**
+     * Returns the `declined_count` (Number of people who declined the event) as int if present.
+     *
+     * @return int|null
+     */
+    public function getDeclinedCount()
+    {
+        return $this->getField('declined_count');
+    }
+
+    /**
+     * Returns the `maybe_count` (Number of people who maybe going to the event) as int if present.
+     *
+     * @return int|null
+     */
+    public function getMaybeCount()
+    {
+        return $this->getField('maybe_count');
+    }
+
+    /**
+     * Returns the `noreply_count` (Number of people who did not reply to the event) as int if present.
+     *
+     * @return int|null
+     */
+    public function getNoreplyCount()
+    {
+        return $this->getField('noreply_count');
+    }
+
+    /**
+     * Returns the `invited_count` (Number of people invited to the event) as int if present.
+     *
+     * @return int|null
+     */
+    public function getInvitedCount()
+    {
+        return $this->getField('invited_count');
+    }
+}

Facebook/GraphNodes/GraphGroup.php

@@ -0,0 +1,171 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\GraphNodes;
+
+/**
+ * Class GraphGroup
+ *
+ * @package Facebook
+ */
+class GraphGroup extends GraphNode
+{
+    /**
+     * @var array Maps object key names to GraphNode types.
+     */
+    protected static $graphObjectMap = [
+        'cover' => '\Facebook\GraphNodes\GraphCoverPhoto',
+        'venue' => '\Facebook\GraphNodes\GraphLocation',
+    ];
+
+    /**
+     * Returns the `id` (The Group ID) as string if present.
+     *
+     * @return string|null
+     */
+    public function getId()
+    {
+        return $this->getField('id');
+    }
+
+    /**
+     * Returns the `cover` (The cover photo of the Group) as GraphCoverPhoto if present.
+     *
+     * @return GraphCoverPhoto|null
+     */
+    public function getCover()
+    {
+        return $this->getField('cover');
+    }
+
+    /**
+     * Returns the `description` (A brief description of the Group) as string if present.
+     *
+     * @return string|null
+     */
+    public function getDescription()
+    {
+        return $this->getField('description');
+    }
+
+    /**
+     * Returns the `email` (The email address to upload content to the Group. Only current members of the Group can use this) as string if present.
+     *
+     * @return string|null
+     */
+    public function getEmail()
+    {
+        return $this->getField('email');
+    }
+
+    /**
+     * Returns the `icon` (The URL for the Group's icon) as string if present.
+     *
+     * @return string|null
+     */
+    public function getIcon()
+    {
+        return $this->getField('icon');
+    }
+
+    /**
+     * Returns the `link` (The Group's website) as string if present.
+     *
+     * @return string|null
+     */
+    public function getLink()
+    {
+        return $this->getField('link');
+    }
+
+    /**
+     * Returns the `name` (The name of the Group) as string if present.
+     *
+     * @return string|null
+     */
+    public function getName()
+    {
+        return $this->getField('name');
+    }
+
+    /**
+     * Returns the `member_request_count` (Number of people asking to join the group.) as int if present.
+     *
+     * @return int|null
+     */
+    public function getMemberRequestCount()
+    {
+        return $this->getField('member_request_count');
+    }
+
+    /**
+     * Returns the `owner` (The profile that created this Group) as GraphNode if present.
+     *
+     * @return GraphNode|null
+     */
+    public function getOwner()
+    {
+        return $this->getField('owner');
+    }
+
+    /**
+     * Returns the `parent` (The parent Group of this Group, if it exists) as GraphNode if present.
+     *
+     * @return GraphNode|null
+     */
+    public function getParent()
+    {
+        return $this->getField('parent');
+    }
+
+    /**
+     * Returns the `privacy` (The privacy setting of the Group) as string if present.
+     *
+     * @return string|null
+     */
+    public function getPrivacy()
+    {
+        return $this->getField('privacy');
+    }
+
+    /**
+     * Returns the `updated_time` (The last time the Group was updated (this includes changes in the Group's properties and changes in posts and comments if user can see them)) as \DateTime if present.
+     *
+     * @return \DateTime|null
+     */
+    public function getUpdatedTime()
+    {
+        return $this->getField('updated_time');
+    }
+
+    /**
+     * Returns the `venue` (The location for the Group) as GraphLocation if present.
+     *
+     * @return GraphLocation|null
+     */
+    public function getVenue()
+    {
+        return $this->getField('venue');
+    }
+
+}

Facebook/GraphNodes/GraphList.php

@@ -0,0 +1,36 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\GraphNodes;
+
+/**
+ * Class GraphList
+ *
+ * @package Facebook
+ *
+ * @deprecated 5.0.0 GraphList has been renamed to GraphEdge
+ * @todo v6: Remove this class
+ */
+class GraphList extends GraphEdge
+{
+}

Facebook/GraphNodes/GraphLocation.php

@@ -0,0 +1,102 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\GraphNodes;
+
+/**
+ * Class GraphLocation
+ *
+ * @package Facebook
+ */
+class GraphLocation extends GraphNode
+{
+    /**
+     * Returns the street component of the location
+     *
+     * @return string|null
+     */
+    public function getStreet()
+    {
+        return $this->getField('street');
+    }
+
+    /**
+     * Returns the city component of the location
+     *
+     * @return string|null
+     */
+    public function getCity()
+    {
+        return $this->getField('city');
+    }
+
+    /**
+     * Returns the state component of the location
+     *
+     * @return string|null
+     */
+    public function getState()
+    {
+        return $this->getField('state');
+    }
+
+    /**
+     * Returns the country component of the location
+     *
+     * @return string|null
+     */
+    public function getCountry()
+    {
+        return $this->getField('country');
+    }
+
+    /**
+     * Returns the zipcode component of the location
+     *
+     * @return string|null
+     */
+    public function getZip()
+    {
+        return $this->getField('zip');
+    }
+
+    /**
+     * Returns the latitude component of the location
+     *
+     * @return float|null
+     */
+    public function getLatitude()
+    {
+        return $this->getField('latitude');
+    }
+
+    /**
+     * Returns the street component of the location
+     *
+     * @return float|null
+     */
+    public function getLongitude()
+    {
+        return $this->getField('longitude');
+    }
+}

Facebook/GraphNodes/GraphNode.php

@@ -0,0 +1,185 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\GraphNodes;
+
+/**
+ * Class GraphNode
+ *
+ * @package Facebook
+ */
+class GraphNode extends Collection
+{
+    /**
+     * @var array Maps object key names to Graph object types.
+     */
+    protected static $graphObjectMap = [];
+
+    /**
+     * Init this Graph object.
+     *
+     * @param array $data
+     */
+    public function __construct(array $data = [])
+    {
+        parent::__construct($this->castItems($data));
+    }
+
+    /**
+     * Iterates over an array and detects the types each node
+     * should be cast to and returns all the items as an array.
+     *
+     * @TODO Add auto-casting to AccessToken entities.
+     *
+     * @param array $data The array to iterate over.
+     *
+     * @return array
+     */
+    public function castItems(array $data)
+    {
+        $items = [];
+
+        foreach ($data as $k => $v) {
+            if ($this->shouldCastAsDateTime($k)
+                && (is_numeric($v)
+                    || $k === 'birthday'
+                    || $this->isIso8601DateString($v))
+            ) {
+                $items[$k] = $this->castToDateTime($v);
+            } else {
+                $items[$k] = $v;
+            }
+        }
+
+        return $items;
+    }
+
+    /**
+     * Uncasts any auto-casted datatypes.
+     * Basically the reverse of castItems().
+     *
+     * @return array
+     */
+    public function uncastItems()
+    {
+        $items = $this->asArray();
+
+        return array_map(function ($v) {
+            if ($v instanceof \DateTime) {
+                return $v->format(\DateTime::ISO8601);
+            }
+
+            return $v;
+        }, $items);
+    }
+
+    /**
+     * Get the collection of items as JSON.
+     *
+     * @param int $options
+     *
+     * @return string
+     */
+    public function asJson($options = 0)
+    {
+        return json_encode($this->uncastItems(), $options);
+    }
+
+    /**
+     * Detects an ISO 8601 formatted string.
+     *
+     * @param string $string
+     *
+     * @return boolean
+     *
+     * @see https://developers.facebook.com/docs/graph-api/using-graph-api/#readmodifiers
+     * @see http://www.cl.cam.ac.uk/~mgk25/iso-time.html
+     * @see http://en.wikipedia.org/wiki/ISO_8601
+     */
+    public function isIso8601DateString($string)
+    {
+        // This insane regex was yoinked from here:
+        // http://www.pelagodesign.com/blog/2009/05/20/iso-8601-date-validation-that-doesnt-suck/
+        // ...and I'm all like:
+        // http://thecodinglove.com/post/95378251969/when-code-works-and-i-dont-know-why
+        $crazyInsaneRegexThatSomehowDetectsIso8601 = '/^([\+-]?\d{4}(?!\d{2}\b))'
+            . '((-?)((0[1-9]|1[0-2])(\3([12]\d|0[1-9]|3[01]))?'
+            . '|W([0-4]\d|5[0-2])(-?[1-7])?|(00[1-9]|0[1-9]\d'
+            . '|[12]\d{2}|3([0-5]\d|6[1-6])))([T\s]((([01]\d|2[0-3])'
+            . '((:?)[0-5]\d)?|24\:?00)([\.,]\d+(?!:))?)?(\17[0-5]\d'
+            . '([\.,]\d+)?)?([zZ]|([\+-])([01]\d|2[0-3]):?([0-5]\d)?)?)?)?$/';
+
+        return preg_match($crazyInsaneRegexThatSomehowDetectsIso8601, $string) === 1;
+    }
+
+    /**
+     * Determines if a value from Graph should be cast to DateTime.
+     *
+     * @param string $key
+     *
+     * @return boolean
+     */
+    public function shouldCastAsDateTime($key)
+    {
+        return in_array($key, [
+            'created_time',
+            'updated_time',
+            'start_time',
+            'end_time',
+            'backdated_time',
+            'issued_at',
+            'expires_at',
+            'birthday',
+            'publish_time'
+        ], true);
+    }
+
+    /**
+     * Casts a date value from Graph to DateTime.
+     *
+     * @param int|string $value
+     *
+     * @return \DateTime
+     */
+    public function castToDateTime($value)
+    {
+        if (is_int($value)) {
+            $dt = new \DateTime();
+            $dt->setTimestamp($value);
+        } else {
+            $dt = new \DateTime($value);
+        }
+
+        return $dt;
+    }
+
+    /**
+     * Getter for $graphObjectMap.
+     *
+     * @return array
+     */
+    public static function getObjectMap()
+    {
+        return static::$graphObjectMap;
+    }
+}

Facebook/GraphNodes/GraphNodeFactory.php

@@ -0,0 +1,392 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\GraphNodes;
+
+use Facebook\FacebookResponse;
+use Facebook\Exceptions\FacebookSDKException;
+
+/**
+ * Class GraphNodeFactory
+ *
+ * @package Facebook
+ *
+ * ## Assumptions ##
+ * GraphEdge - is ALWAYS a numeric array
+ * GraphEdge - is ALWAYS an array of GraphNode types
+ * GraphNode - is ALWAYS an associative array
+ * GraphNode - MAY contain GraphNode's "recurrable"
+ * GraphNode - MAY contain GraphEdge's "recurrable"
+ * GraphNode - MAY contain DateTime's "primitives"
+ * GraphNode - MAY contain string's "primitives"
+ */
+class GraphNodeFactory
+{
+    /**
+     * @const string The base graph object class.
+     */
+    const BASE_GRAPH_NODE_CLASS = '\Facebook\GraphNodes\GraphNode';
+
+    /**
+     * @const string The base graph edge class.
+     */
+    const BASE_GRAPH_EDGE_CLASS = '\Facebook\GraphNodes\GraphEdge';
+
+    /**
+     * @const string The graph object prefix.
+     */
+    const BASE_GRAPH_OBJECT_PREFIX = '\Facebook\GraphNodes\\';
+
+    /**
+     * @var FacebookResponse The response entity from Graph.
+     */
+    protected $response;
+
+    /**
+     * @var array The decoded body of the FacebookResponse entity from Graph.
+     */
+    protected $decodedBody;
+
+    /**
+     * Init this Graph object.
+     *
+     * @param FacebookResponse $response The response entity from Graph.
+     */
+    public function __construct(FacebookResponse $response)
+    {
+        $this->response = $response;
+        $this->decodedBody = $response->getDecodedBody();
+    }
+
+    /**
+     * Tries to convert a FacebookResponse entity into a GraphNode.
+     *
+     * @param string|null $subclassName The GraphNode sub class to cast to.
+     *
+     * @return GraphNode
+     *
+     * @throws FacebookSDKException
+     */
+    public function makeGraphNode($subclassName = null)
+    {
+        $this->validateResponseAsArray();
+        $this->validateResponseCastableAsGraphNode();
+
+        return $this->castAsGraphNodeOrGraphEdge($this->decodedBody, $subclassName);
+    }
+
+    /**
+     * Convenience method for creating a GraphAchievement collection.
+     *
+     * @return GraphAchievement
+     *
+     * @throws FacebookSDKException
+     */
+    public function makeGraphAchievement()
+    {
+        return $this->makeGraphNode(static::BASE_GRAPH_OBJECT_PREFIX . 'GraphAchievement');
+    }
+
+    /**
+     * Convenience method for creating a GraphAlbum collection.
+     *
+     * @return GraphAlbum
+     *
+     * @throws FacebookSDKException
+     */
+    public function makeGraphAlbum()
+    {
+        return $this->makeGraphNode(static::BASE_GRAPH_OBJECT_PREFIX . 'GraphAlbum');
+    }
+
+    /**
+     * Convenience method for creating a GraphPage collection.
+     *
+     * @return GraphPage
+     *
+     * @throws FacebookSDKException
+     */
+    public function makeGraphPage()
+    {
+        return $this->makeGraphNode(static::BASE_GRAPH_OBJECT_PREFIX . 'GraphPage');
+    }
+
+    /**
+     * Convenience method for creating a GraphSessionInfo collection.
+     *
+     * @return GraphSessionInfo
+     *
+     * @throws FacebookSDKException
+     */
+    public function makeGraphSessionInfo()
+    {
+        return $this->makeGraphNode(static::BASE_GRAPH_OBJECT_PREFIX . 'GraphSessionInfo');
+    }
+
+    /**
+     * Convenience method for creating a GraphUser collection.
+     *
+     * @return GraphUser
+     *
+     * @throws FacebookSDKException
+     */
+    public function makeGraphUser()
+    {
+        return $this->makeGraphNode(static::BASE_GRAPH_OBJECT_PREFIX . 'GraphUser');
+    }
+
+    /**
+     * Convenience method for creating a GraphEvent collection.
+     *
+     * @return GraphEvent
+     *
+     * @throws FacebookSDKException
+     */
+    public function makeGraphEvent()
+    {
+        return $this->makeGraphNode(static::BASE_GRAPH_OBJECT_PREFIX . 'GraphEvent');
+    }
+
+    /**
+     * Convenience method for creating a GraphGroup collection.
+     *
+     * @return GraphGroup
+     *
+     * @throws FacebookSDKException
+     */
+    public function makeGraphGroup()
+    {
+        return $this->makeGraphNode(static::BASE_GRAPH_OBJECT_PREFIX . 'GraphGroup');
+    }
+
+    /**
+     * Tries to convert a FacebookResponse entity into a GraphEdge.
+     *
+     * @param string|null $subclassName The GraphNode sub class to cast the list items to.
+     * @param boolean     $auto_prefix  Toggle to auto-prefix the subclass name.
+     *
+     * @return GraphEdge
+     *
+     * @throws FacebookSDKException
+     */
+    public function makeGraphEdge($subclassName = null, $auto_prefix = true)
+    {
+        $this->validateResponseAsArray();
+        $this->validateResponseCastableAsGraphEdge();
+
+        if ($subclassName && $auto_prefix) {
+            $subclassName = static::BASE_GRAPH_OBJECT_PREFIX . $subclassName;
+        }
+
+        return $this->castAsGraphNodeOrGraphEdge($this->decodedBody, $subclassName);
+    }
+
+    /**
+     * Validates the decoded body.
+     *
+     * @throws FacebookSDKException
+     */
+    public function validateResponseAsArray()
+    {
+        if (!is_array($this->decodedBody)) {
+            throw new FacebookSDKException('Unable to get response from Graph as array.', 620);
+        }
+    }
+
+    /**
+     * Validates that the return data can be cast as a GraphNode.
+     *
+     * @throws FacebookSDKException
+     */
+    public function validateResponseCastableAsGraphNode()
+    {
+        if (isset($this->decodedBody['data']) && static::isCastableAsGraphEdge($this->decodedBody['data'])) {
+            throw new FacebookSDKException(
+                'Unable to convert response from Graph to a GraphNode because the response looks like a GraphEdge. Try using GraphNodeFactory::makeGraphEdge() instead.',
+                620
+            );
+        }
+    }
+
+    /**
+     * Validates that the return data can be cast as a GraphEdge.
+     *
+     * @throws FacebookSDKException
+     */
+    public function validateResponseCastableAsGraphEdge()
+    {
+        if (!(isset($this->decodedBody['data']) && static::isCastableAsGraphEdge($this->decodedBody['data']))) {
+            throw new FacebookSDKException(
+                'Unable to convert response from Graph to a GraphEdge because the response does not look like a GraphEdge. Try using GraphNodeFactory::makeGraphNode() instead.',
+                620
+            );
+        }
+    }
+
+    /**
+     * Safely instantiates a GraphNode of $subclassName.
+     *
+     * @param array       $data         The array of data to iterate over.
+     * @param string|null $subclassName The subclass to cast this collection to.
+     *
+     * @return GraphNode
+     *
+     * @throws FacebookSDKException
+     */
+    public function safelyMakeGraphNode(array $data, $subclassName = null)
+    {
+        $subclassName = $subclassName ?: static::BASE_GRAPH_NODE_CLASS;
+        static::validateSubclass($subclassName);
+
+        // Remember the parent node ID
+        $parentNodeId = isset($data['id']) ? $data['id'] : null;
+
+        $items = [];
+
+        foreach ($data as $k => $v) {
+            // Array means could be recurable
+            if (is_array($v)) {
+                // Detect any smart-casting from the $graphObjectMap array.
+                // This is always empty on the GraphNode collection, but subclasses can define
+                // their own array of smart-casting types.
+                $graphObjectMap = $subclassName::getObjectMap();
+                $objectSubClass = isset($graphObjectMap[$k])
+                    ? $graphObjectMap[$k]
+                    : null;
+
+                // Could be a GraphEdge or GraphNode
+                $items[$k] = $this->castAsGraphNodeOrGraphEdge($v, $objectSubClass, $k, $parentNodeId);
+            } else {
+                $items[$k] = $v;
+            }
+        }
+
+        return new $subclassName($items);
+    }
+
+    /**
+     * Takes an array of values and determines how to cast each node.
+     *
+     * @param array       $data         The array of data to iterate over.
+     * @param string|null $subclassName The subclass to cast this collection to.
+     * @param string|null $parentKey    The key of this data (Graph edge).
+     * @param string|null $parentNodeId The parent Graph node ID.
+     *
+     * @return GraphNode|GraphEdge
+     *
+     * @throws FacebookSDKException
+     */
+    public function castAsGraphNodeOrGraphEdge(array $data, $subclassName = null, $parentKey = null, $parentNodeId = null)
+    {
+        if (isset($data['data'])) {
+            // Create GraphEdge
+            if (static::isCastableAsGraphEdge($data['data'])) {
+                return $this->safelyMakeGraphEdge($data, $subclassName, $parentKey, $parentNodeId);
+            }
+            // Sometimes Graph is a weirdo and returns a GraphNode under the "data" key
+            $data = $data['data'];
+        }
+
+        // Create GraphNode
+        return $this->safelyMakeGraphNode($data, $subclassName);
+    }
+
+    /**
+     * Return an array of GraphNode's.
+     *
+     * @param array       $data         The array of data to iterate over.
+     * @param string|null $subclassName The GraphNode subclass to cast each item in the list to.
+     * @param string|null $parentKey    The key of this data (Graph edge).
+     * @param string|null $parentNodeId The parent Graph node ID.
+     *
+     * @return GraphEdge
+     *
+     * @throws FacebookSDKException
+     */
+    public function safelyMakeGraphEdge(array $data, $subclassName = null, $parentKey = null, $parentNodeId = null)
+    {
+        if (!isset($data['data'])) {
+            throw new FacebookSDKException('Cannot cast data to GraphEdge. Expected a "data" key.', 620);
+        }
+
+        $dataList = [];
+        foreach ($data['data'] as $graphNode) {
+            $dataList[] = $this->safelyMakeGraphNode($graphNode, $subclassName);
+        }
+
+        $metaData = $this->getMetaData($data);
+
+        // We'll need to make an edge endpoint for this in case it's a GraphEdge (for cursor pagination)
+        $parentGraphEdgeEndpoint = $parentNodeId && $parentKey ? '/' . $parentNodeId . '/' . $parentKey : null;
+        $className = static::BASE_GRAPH_EDGE_CLASS;
+
+        return new $className($this->response->getRequest(), $dataList, $metaData, $parentGraphEdgeEndpoint, $subclassName);
+    }
+
+    /**
+     * Get the meta data from a list in a Graph response.
+     *
+     * @param array $data The Graph response.
+     *
+     * @return array
+     */
+    public function getMetaData(array $data)
+    {
+        unset($data['data']);
+
+        return $data;
+    }
+
+    /**
+     * Determines whether or not the data should be cast as a GraphEdge.
+     *
+     * @param array $data
+     *
+     * @return boolean
+     */
+    public static function isCastableAsGraphEdge(array $data)
+    {
+        if ($data === []) {
+            return true;
+        }
+
+        // Checks for a sequential numeric array which would be a GraphEdge
+        return array_keys($data) === range(0, count($data) - 1);
+    }
+
+    /**
+     * Ensures that the subclass in question is valid.
+     *
+     * @param string $subclassName The GraphNode subclass to validate.
+     *
+     * @throws FacebookSDKException
+     */
+    public static function validateSubclass($subclassName)
+    {
+        if ($subclassName == static::BASE_GRAPH_NODE_CLASS || is_subclass_of($subclassName, static::BASE_GRAPH_NODE_CLASS)) {
+            return;
+        }
+
+        throw new FacebookSDKException('The given subclass "' . $subclassName . '" is not valid. Cannot cast to an object that is not a GraphNode subclass.', 620);
+    }
+}

Facebook/GraphNodes/GraphObject.php

@@ -0,0 +1,36 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\GraphNodes;
+
+/**
+ * Class GraphObject
+ *
+ * @package Facebook
+ *
+ * @deprecated 5.0.0 GraphObject has been renamed to GraphNode
+ * @todo v6: Remove this class
+ */
+class GraphObject extends GraphNode
+{
+}

Facebook/GraphNodes/GraphObjectFactory.php

@@ -0,0 +1,88 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\GraphNodes;
+
+use Facebook\Exceptions\FacebookSDKException;
+
+/**
+ * Class GraphObjectFactory
+ *
+ * @package Facebook
+ *
+ * @deprecated 5.0.0 GraphObjectFactory has been renamed to GraphNodeFactory
+ * @todo v6: Remove this class
+ */
+class GraphObjectFactory extends GraphNodeFactory
+{
+    /**
+     * @const string The base graph object class.
+     */
+    const BASE_GRAPH_NODE_CLASS = '\Facebook\GraphNodes\GraphObject';
+
+    /**
+     * @const string The base graph edge class.
+     */
+    const BASE_GRAPH_EDGE_CLASS = '\Facebook\GraphNodes\GraphList';
+
+    /**
+     * Tries to convert a FacebookResponse entity into a GraphNode.
+     *
+     * @param string|null $subclassName The GraphNode sub class to cast to.
+     *
+     * @return GraphNode
+     *
+     * @deprecated 5.0.0 GraphObjectFactory has been renamed to GraphNodeFactory
+     */
+    public function makeGraphObject($subclassName = null)
+    {
+        return $this->makeGraphNode($subclassName);
+    }
+
+    /**
+     * Convenience method for creating a GraphEvent collection.
+     *
+     * @return GraphEvent
+     *
+     * @throws FacebookSDKException
+     */
+    public function makeGraphEvent()
+    {
+        return $this->makeGraphObject(static::BASE_GRAPH_OBJECT_PREFIX . 'GraphEvent');
+    }
+
+    /**
+     * Tries to convert a FacebookResponse entity into a GraphEdge.
+     *
+     * @param string|null $subclassName The GraphNode sub class to cast the list items to.
+     * @param boolean     $auto_prefix  Toggle to auto-prefix the subclass name.
+     *
+     * @return GraphEdge
+     *
+     * @deprecated 5.0.0 GraphObjectFactory has been renamed to GraphNodeFactory
+     */
+    public function makeGraphList($subclassName = null, $auto_prefix = true)
+    {
+        return $this->makeGraphEdge($subclassName, $auto_prefix);
+    }
+}

Facebook/GraphNodes/GraphPage.php

@@ -0,0 +1,125 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\GraphNodes;
+
+/**
+ * Class GraphPage
+ *
+ * @package Facebook
+ */
+class GraphPage extends GraphNode
+{
+    /**
+     * @var array Maps object key names to Graph object types.
+     */
+    protected static $graphObjectMap = [
+        'best_page' => '\Facebook\GraphNodes\GraphPage',
+        'global_brand_parent_page' => '\Facebook\GraphNodes\GraphPage',
+        'location' => '\Facebook\GraphNodes\GraphLocation',
+    ];
+
+    /**
+     * Returns the ID for the user's page as a string if present.
+     *
+     * @return string|null
+     */
+    public function getId()
+    {
+        return $this->getField('id');
+    }
+
+    /**
+     * Returns the Category for the user's page as a string if present.
+     *
+     * @return string|null
+     */
+    public function getCategory()
+    {
+        return $this->getField('category');
+    }
+
+    /**
+     * Returns the Name of the user's page as a string if present.
+     *
+     * @return string|null
+     */
+    public function getName()
+    {
+        return $this->getField('name');
+    }
+
+    /**
+     * Returns the best available Page on Facebook.
+     *
+     * @return GraphPage|null
+     */
+    public function getBestPage()
+    {
+        return $this->getField('best_page');
+    }
+
+    /**
+     * Returns the brand's global (parent) Page.
+     *
+     * @return GraphPage|null
+     */
+    public function getGlobalBrandParentPage()
+    {
+        return $this->getField('global_brand_parent_page');
+    }
+
+    /**
+     * Returns the location of this place.
+     *
+     * @return GraphLocation|null
+     */
+    public function getLocation()
+    {
+        return $this->getField('location');
+    }
+
+    /**
+     * Returns the page access token for the admin user.
+     *
+     * Only available in the `/me/accounts` context.
+     *
+     * @return string|null
+     */
+    public function getAccessToken()
+    {
+        return $this->getField('access_token');
+    }
+
+    /**
+     * Returns the roles of the page admin user.
+     *
+     * Only available in the `/me/accounts` context.
+     *
+     * @return array|null
+     */
+    public function getPerms()
+    {
+        return $this->getField('perms');
+    }
+}

Facebook/GraphNodes/GraphPicture.php

@@ -0,0 +1,72 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\GraphNodes;
+
+/**
+ * Class GraphPicture
+ *
+ * @package Facebook
+ */
+class GraphPicture extends GraphNode
+{
+    /**
+     * Returns true if user picture is silhouette.
+     *
+     * @return bool|null
+     */
+    public function isSilhouette()
+    {
+        return $this->getField('is_silhouette');
+    }
+
+    /**
+     * Returns the url of user picture if it exists
+     *
+     * @return string|null
+     */
+    public function getUrl()
+    {
+        return $this->getField('url');
+    }
+
+    /**
+     * Returns the width of user picture if it exists
+     *
+     * @return int|null
+     */
+    public function getWidth()
+    {
+        return $this->getField('width');
+    }
+
+    /**
+     * Returns the height of user picture if it exists
+     *
+     * @return int|null
+     */
+    public function getHeight()
+    {
+        return $this->getField('height');
+    }
+}

Facebook/GraphNodes/GraphSessionInfo.php

@@ -0,0 +1,102 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\GraphNodes;
+
+/**
+ * Class GraphSessionInfo
+ *
+ * @package Facebook
+ */
+class GraphSessionInfo extends GraphNode
+{
+    /**
+     * Returns the application id the token was issued for.
+     *
+     * @return string|null
+     */
+    public function getAppId()
+    {
+        return $this->getField('app_id');
+    }
+
+    /**
+     * Returns the application name the token was issued for.
+     *
+     * @return string|null
+     */
+    public function getApplication()
+    {
+        return $this->getField('application');
+    }
+
+    /**
+     * Returns the date & time that the token expires.
+     *
+     * @return \DateTime|null
+     */
+    public function getExpiresAt()
+    {
+        return $this->getField('expires_at');
+    }
+
+    /**
+     * Returns whether the token is valid.
+     *
+     * @return boolean
+     */
+    public function getIsValid()
+    {
+        return $this->getField('is_valid');
+    }
+
+    /**
+     * Returns the date & time the token was issued at.
+     *
+     * @return \DateTime|null
+     */
+    public function getIssuedAt()
+    {
+        return $this->getField('issued_at');
+    }
+
+    /**
+     * Returns the scope permissions associated with the token.
+     *
+     * @return array
+     */
+    public function getScopes()
+    {
+        return $this->getField('scopes');
+    }
+
+    /**
+     * Returns the login id of the user associated with the token.
+     *
+     * @return string|null
+     */
+    public function getUserId()
+    {
+        return $this->getField('user_id');
+    }
+}

Facebook/GraphNodes/GraphUser.php

@@ -0,0 +1,172 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\GraphNodes;
+
+/**
+ * Class GraphUser
+ *
+ * @package Facebook
+ */
+class GraphUser extends GraphNode
+{
+    /**
+     * @var array Maps object key names to Graph object types.
+     */
+    protected static $graphObjectMap = [
+        'hometown' => '\Facebook\GraphNodes\GraphPage',
+        'location' => '\Facebook\GraphNodes\GraphPage',
+        'significant_other' => '\Facebook\GraphNodes\GraphUser',
+        'picture' => '\Facebook\GraphNodes\GraphPicture',
+    ];
+
+    /**
+     * Returns the ID for the user as a string if present.
+     *
+     * @return string|null
+     */
+    public function getId()
+    {
+        return $this->getField('id');
+    }
+
+    /**
+     * Returns the name for the user as a string if present.
+     *
+     * @return string|null
+     */
+    public function getName()
+    {
+        return $this->getField('name');
+    }
+
+    /**
+     * Returns the first name for the user as a string if present.
+     *
+     * @return string|null
+     */
+    public function getFirstName()
+    {
+        return $this->getField('first_name');
+    }
+
+    /**
+     * Returns the middle name for the user as a string if present.
+     *
+     * @return string|null
+     */
+    public function getMiddleName()
+    {
+        return $this->getField('middle_name');
+    }
+
+    /**
+     * Returns the last name for the user as a string if present.
+     *
+     * @return string|null
+     */
+    public function getLastName()
+    {
+        return $this->getField('last_name');
+    }
+
+    /**
+     * Returns the email for the user as a string if present.
+     *
+     * @return string|null
+     */
+    public function getEmail()
+    {
+        return $this->getField('email');
+    }
+
+    /**
+     * Returns the gender for the user as a string if present.
+     *
+     * @return string|null
+     */
+    public function getGender()
+    {
+        return $this->getField('gender');
+    }
+
+    /**
+     * Returns the Facebook URL for the user as a string if available.
+     *
+     * @return string|null
+     */
+    public function getLink()
+    {
+        return $this->getField('link');
+    }
+
+    /**
+     * Returns the users birthday, if available.
+     *
+     * @return \DateTime|null
+     */
+    public function getBirthday()
+    {
+        return $this->getField('birthday');
+    }
+
+    /**
+     * Returns the current location of the user as a GraphPage.
+     *
+     * @return GraphPage|null
+     */
+    public function getLocation()
+    {
+        return $this->getField('location');
+    }
+
+    /**
+     * Returns the current location of the user as a GraphPage.
+     *
+     * @return GraphPage|null
+     */
+    public function getHometown()
+    {
+        return $this->getField('hometown');
+    }
+
+    /**
+     * Returns the current location of the user as a GraphUser.
+     *
+     * @return GraphUser|null
+     */
+    public function getSignificantOther()
+    {
+        return $this->getField('significant_other');
+    }
+
+    /**
+     * Returns the picture of the user as a GraphPicture
+     *
+     * @return GraphPicture|null
+     */
+    public function getPicture()
+    {
+        return $this->getField('picture');
+    }
+}

Facebook/Helpers/FacebookCanvasHelper.php

@@ -0,0 +1,52 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\Helpers;
+
+/**
+ * Class FacebookCanvasLoginHelper
+ *
+ * @package Facebook
+ */
+class FacebookCanvasHelper extends FacebookSignedRequestFromInputHelper
+{
+    /**
+     * Returns the app data value.
+     *
+     * @return mixed|null
+     */
+    public function getAppData()
+    {
+        return $this->signedRequest ? $this->signedRequest->get('app_data') : null;
+    }
+
+    /**
+     * Get raw signed request from POST.
+     *
+     * @return string|null
+     */
+    public function getRawSignedRequest()
+    {
+        return $this->getRawSignedRequestFromPost() ?: null;
+    }
+}

Facebook/Helpers/FacebookJavaScriptHelper.php

@@ -0,0 +1,42 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\Helpers;
+
+/**
+ * Class FacebookJavaScriptLoginHelper
+ *
+ * @package Facebook
+ */
+class FacebookJavaScriptHelper extends FacebookSignedRequestFromInputHelper
+{
+    /**
+     * Get raw signed request from the cookie.
+     *
+     * @return string|null
+     */
+    public function getRawSignedRequest()
+    {
+        return $this->getRawSignedRequestFromCookie();
+    }
+}

Facebook/Helpers/FacebookPageTabHelper.php

@@ -0,0 +1,95 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\Helpers;
+
+use Facebook\FacebookApp;
+use Facebook\FacebookClient;
+
+/**
+ * Class FacebookPageTabHelper
+ *
+ * @package Facebook
+ */
+class FacebookPageTabHelper extends FacebookCanvasHelper
+{
+    /**
+     * @var array|null
+     */
+    protected $pageData;
+
+    /**
+     * Initialize the helper and process available signed request data.
+     *
+     * @param FacebookApp    $app          The FacebookApp entity.
+     * @param FacebookClient $client       The client to make HTTP requests.
+     * @param string|null    $graphVersion The version of Graph to use.
+     */
+    public function __construct(FacebookApp $app, FacebookClient $client, $graphVersion = null)
+    {
+        parent::__construct($app, $client, $graphVersion);
+
+        if (!$this->signedRequest) {
+            return;
+        }
+
+        $this->pageData = $this->signedRequest->get('page');
+    }
+
+    /**
+     * Returns a value from the page data.
+     *
+     * @param string     $key
+     * @param mixed|null $default
+     *
+     * @return mixed|null
+     */
+    public function getPageData($key, $default = null)
+    {
+        if (isset($this->pageData[$key])) {
+            return $this->pageData[$key];
+        }
+
+        return $default;
+    }
+
+    /**
+     * Returns true if the user is an admin.
+     *
+     * @return boolean
+     */
+    public function isAdmin()
+    {
+        return $this->getPageData('admin') === true;
+    }
+
+    /**
+     * Returns the page id if available.
+     *
+     * @return string|null
+     */
+    public function getPageId()
+    {
+        return $this->getPageData('id');
+    }
+}

Facebook/Helpers/FacebookRedirectLoginHelper.php

@@ -0,0 +1,360 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\Helpers;
+
+use Facebook\Authentication\AccessToken;
+use Facebook\Authentication\OAuth2Client;
+use Facebook\Url\UrlDetectionInterface;
+use Facebook\Url\FacebookUrlDetectionHandler;
+use Facebook\Url\FacebookUrlManipulator;
+use Facebook\PersistentData\PersistentDataInterface;
+use Facebook\PersistentData\FacebookSessionPersistentDataHandler;
+use Facebook\PseudoRandomString\PseudoRandomStringGeneratorInterface;
+use Facebook\PseudoRandomString\McryptPseudoRandomStringGenerator;
+use Facebook\PseudoRandomString\OpenSslPseudoRandomStringGenerator;
+use Facebook\PseudoRandomString\UrandomPseudoRandomStringGenerator;
+use Facebook\Exceptions\FacebookSDKException;
+
+/**
+ * Class FacebookRedirectLoginHelper
+ *
+ * @package Facebook
+ */
+class FacebookRedirectLoginHelper
+{
+    /**
+     * @const int The length of CSRF string to validate the login link.
+     */
+    const CSRF_LENGTH = 32;
+
+    /**
+     * @var OAuth2Client The OAuth 2.0 client service.
+     */
+    protected $oAuth2Client;
+
+    /**
+     * @var UrlDetectionInterface The URL detection handler.
+     */
+    protected $urlDetectionHandler;
+
+    /**
+     * @var PersistentDataInterface The persistent data handler.
+     */
+    protected $persistentDataHandler;
+
+    /**
+     * @var PseudoRandomStringGeneratorInterface The cryptographically secure pseudo-random string generator.
+     */
+    protected $pseudoRandomStringGenerator;
+
+    /**
+     * @param OAuth2Client                              $oAuth2Client          The OAuth 2.0 client service.
+     * @param PersistentDataInterface|null              $persistentDataHandler The persistent data handler.
+     * @param UrlDetectionInterface|null                $urlHandler            The URL detection handler.
+     * @param PseudoRandomStringGeneratorInterface|null $prsg                  The cryptographically secure pseudo-random string generator.
+     */
+    public function __construct(OAuth2Client $oAuth2Client, PersistentDataInterface $persistentDataHandler = null, UrlDetectionInterface $urlHandler = null, PseudoRandomStringGeneratorInterface $prsg = null)
+    {
+        $this->oAuth2Client = $oAuth2Client;
+        $this->persistentDataHandler = $persistentDataHandler ?: new FacebookSessionPersistentDataHandler();
+        $this->urlDetectionHandler = $urlHandler ?: new FacebookUrlDetectionHandler();
+        $this->pseudoRandomStringGenerator = $prsg ?: $this->detectPseudoRandomStringGenerator();
+    }
+
+    /**
+     * Returns the persistent data handler.
+     *
+     * @return PersistentDataInterface
+     */
+    public function getPersistentDataHandler()
+    {
+        return $this->persistentDataHandler;
+    }
+
+    /**
+     * Returns the URL detection handler.
+     *
+     * @return UrlDetectionInterface
+     */
+    public function getUrlDetectionHandler()
+    {
+        return $this->urlDetectionHandler;
+    }
+
+    /**
+     * Returns the cryptographically secure pseudo-random string generator.
+     *
+     * @return PseudoRandomStringGeneratorInterface
+     */
+    public function getPseudoRandomStringGenerator()
+    {
+        return $this->pseudoRandomStringGenerator;
+    }
+
+    /**
+     * Detects which pseudo-random string generator to use.
+     *
+     * @return PseudoRandomStringGeneratorInterface
+     *
+     * @throws FacebookSDKException
+     */
+    public function detectPseudoRandomStringGenerator()
+    {
+        // Since openssl_random_pseudo_bytes() can sometimes return non-cryptographically
+        // secure pseudo-random strings (in rare cases), we check for mcrypt_create_iv() first.
+        if (function_exists('mcrypt_create_iv')) {
+            return new McryptPseudoRandomStringGenerator();
+        }
+
+        if (function_exists('openssl_random_pseudo_bytes')) {
+            return new OpenSslPseudoRandomStringGenerator();
+        }
+
+        if (!ini_get('open_basedir') && is_readable('/dev/urandom')) {
+            return new UrandomPseudoRandomStringGenerator();
+        }
+
+        throw new FacebookSDKException('Unable to detect a cryptographically secure pseudo-random string generator.');
+    }
+
+    /**
+     * Stores CSRF state and returns a URL to which the user should be sent to in order to continue the login process with Facebook.
+     *
+     * @param string $redirectUrl The URL Facebook should redirect users to after login.
+     * @param array  $scope       List of permissions to request during login.
+     * @param array  $params      An array of parameters to generate URL.
+     * @param string $separator   The separator to use in http_build_query().
+     *
+     * @return string
+     */
+    private function makeUrl($redirectUrl, array $scope, array $params = [], $separator = '&')
+    {
+        $state = $this->pseudoRandomStringGenerator->getPseudoRandomString(static::CSRF_LENGTH);
+        $this->persistentDataHandler->set('state', $state);
+
+        return $this->oAuth2Client->getAuthorizationUrl($redirectUrl, $state, $scope, $params, $separator);
+    }
+
+    /**
+     * Returns the URL to send the user in order to login to Facebook.
+     *
+     * @param string $redirectUrl The URL Facebook should redirect users to after login.
+     * @param array  $scope       List of permissions to request during login.
+     * @param string $separator   The separator to use in http_build_query().
+     *
+     * @return string
+     */
+    public function getLoginUrl($redirectUrl, array $scope = [], $separator = '&')
+    {
+        return $this->makeUrl($redirectUrl, $scope, [], $separator);
+    }
+
+    /**
+     * Returns the URL to send the user in order to log out of Facebook.
+     *
+     * @param AccessToken|string $accessToken The access token that will be logged out.
+     * @param string             $next        The url Facebook should redirect the user to after a successful logout.
+     * @param string             $separator   The separator to use in http_build_query().
+     *
+     * @return string
+     *
+     * @throws FacebookSDKException
+     */
+    public function getLogoutUrl($accessToken, $next, $separator = '&')
+    {
+        if (!$accessToken instanceof AccessToken) {
+            $accessToken = new AccessToken($accessToken);
+        }
+
+        if ($accessToken->isAppAccessToken()) {
+            throw new FacebookSDKException('Cannot generate a logout URL with an app access token.', 722);
+        }
+
+        $params = [
+            'next' => $next,
+            'access_token' => $accessToken->getValue(),
+        ];
+
+        return 'https://www.facebook.com/logout.php?' . http_build_query($params, null, $separator);
+    }
+
+    /**
+     * Returns the URL to send the user in order to login to Facebook with permission(s) to be re-asked.
+     *
+     * @param string $redirectUrl The URL Facebook should redirect users to after login.
+     * @param array  $scope       List of permissions to request during login.
+     * @param string $separator   The separator to use in http_build_query().
+     *
+     * @return string
+     */
+    public function getReRequestUrl($redirectUrl, array $scope = [], $separator = '&')
+    {
+        $params = ['auth_type' => 'rerequest'];
+
+        return $this->makeUrl($redirectUrl, $scope, $params, $separator);
+    }
+
+    /**
+     * Returns the URL to send the user in order to login to Facebook with user to be re-authenticated.
+     *
+     * @param string $redirectUrl The URL Facebook should redirect users to after login.
+     * @param array  $scope       List of permissions to request during login.
+     * @param string $separator   The separator to use in http_build_query().
+     *
+     * @return string
+     */
+    public function getReAuthenticationUrl($redirectUrl, array $scope = [], $separator = '&')
+    {
+        $params = ['auth_type' => 'reauthenticate'];
+
+        return $this->makeUrl($redirectUrl, $scope, $params, $separator);
+    }
+
+    /**
+     * Takes a valid code from a login redirect, and returns an AccessToken entity.
+     *
+     * @param string|null $redirectUrl The redirect URL.
+     *
+     * @return AccessToken|null
+     *
+     * @throws FacebookSDKException
+     */
+    public function getAccessToken($redirectUrl = null)
+    {
+        if (!$code = $this->getCode()) {
+            return null;
+        }
+
+        $this->validateCsrf();
+
+        $redirectUrl = $redirectUrl ?: $this->urlDetectionHandler->getCurrentUrl();
+        // At minimum we need to remove the state param
+        $redirectUrl = FacebookUrlManipulator::removeParamsFromUrl($redirectUrl, ['state']);
+
+        return $this->oAuth2Client->getAccessTokenFromCode($code, $redirectUrl);
+    }
+
+    /**
+     * Validate the request against a cross-site request forgery.
+     *
+     * @throws FacebookSDKException
+     */
+    protected function validateCsrf()
+    {
+        $state = $this->getState();
+        $savedState = $this->persistentDataHandler->get('state');
+
+        if (!$state || !$savedState) {
+            throw new FacebookSDKException('Cross-site request forgery validation failed. Required param "state" missing.');
+        }
+
+        $savedLen = strlen($savedState);
+        $givenLen = strlen($state);
+
+        if ($savedLen !== $givenLen) {
+            throw new FacebookSDKException('Cross-site request forgery validation failed. The "state" param from the URL and session do not match.');
+        }
+
+        $result = 0;
+        for ($i = 0; $i < $savedLen; $i++) {
+            $result |= ord($state[$i]) ^ ord($savedState[$i]);
+        }
+
+        if ($result !== 0) {
+            throw new FacebookSDKException('Cross-site request forgery validation failed. The "state" param from the URL and session do not match.');
+        }
+    }
+
+    /**
+     * Return the code.
+     *
+     * @return string|null
+     */
+    protected function getCode()
+    {
+        return $this->getInput('code');
+    }
+
+    /**
+     * Return the state.
+     *
+     * @return string|null
+     */
+    protected function getState()
+    {
+        return $this->getInput('state');
+    }
+
+    /**
+     * Return the error code.
+     *
+     * @return string|null
+     */
+    public function getErrorCode()
+    {
+        return $this->getInput('error_code');
+    }
+
+    /**
+     * Returns the error.
+     *
+     * @return string|null
+     */
+    public function getError()
+    {
+        return $this->getInput('error');
+    }
+
+    /**
+     * Returns the error reason.
+     *
+     * @return string|null
+     */
+    public function getErrorReason()
+    {
+        return $this->getInput('error_reason');
+    }
+
+    /**
+     * Returns the error description.
+     *
+     * @return string|null
+     */
+    public function getErrorDescription()
+    {
+        return $this->getInput('error_description');
+    }
+
+    /**
+     * Returns a value from a GET param.
+     *
+     * @param string $key
+     *
+     * @return string|null
+     */
+    private function getInput($key)
+    {
+        return isset($_GET[$key]) ? $_GET[$key] : null;
+    }
+}

Facebook/Helpers/FacebookSignedRequestFromInputHelper.php

@@ -0,0 +1,166 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\Helpers;
+
+use Facebook\Facebook;
+use Facebook\FacebookApp;
+use Facebook\FacebookClient;
+use Facebook\SignedRequest;
+use Facebook\Authentication\AccessToken;
+use Facebook\Authentication\OAuth2Client;
+
+/**
+ * Class FacebookSignedRequestFromInputHelper
+ *
+ * @package Facebook
+ */
+abstract class FacebookSignedRequestFromInputHelper
+{
+    /**
+     * @var SignedRequest|null The SignedRequest entity.
+     */
+    protected $signedRequest;
+
+    /**
+     * @var FacebookApp The FacebookApp entity.
+     */
+    protected $app;
+
+    /**
+     * @var OAuth2Client The OAuth 2.0 client service.
+     */
+    protected $oAuth2Client;
+
+    /**
+     * Initialize the helper and process available signed request data.
+     *
+     * @param FacebookApp    $app          The FacebookApp entity.
+     * @param FacebookClient $client       The client to make HTTP requests.
+     * @param string|null    $graphVersion The version of Graph to use.
+     */
+    public function __construct(FacebookApp $app, FacebookClient $client, $graphVersion = null)
+    {
+        $this->app = $app;
+        $graphVersion = $graphVersion ?: Facebook::DEFAULT_GRAPH_VERSION;
+        $this->oAuth2Client = new OAuth2Client($this->app, $client, $graphVersion);
+
+        $this->instantiateSignedRequest();
+    }
+
+    /**
+     * Instantiates a new SignedRequest entity.
+     *
+     * @param string|null
+     */
+    public function instantiateSignedRequest($rawSignedRequest = null)
+    {
+        $rawSignedRequest = $rawSignedRequest ?: $this->getRawSignedRequest();
+
+        if (!$rawSignedRequest) {
+            return;
+        }
+
+        $this->signedRequest = new SignedRequest($this->app, $rawSignedRequest);
+    }
+
+    /**
+     * Returns an AccessToken entity from the signed request.
+     *
+     * @return AccessToken|null
+     *
+     * @throws \Facebook\Exceptions\FacebookSDKException
+     */
+    public function getAccessToken()
+    {
+        if ($this->signedRequest && $this->signedRequest->hasOAuthData()) {
+            $code = $this->signedRequest->get('code');
+            $accessToken = $this->signedRequest->get('oauth_token');
+
+            if ($code && !$accessToken) {
+                return $this->oAuth2Client->getAccessTokenFromCode($code);
+            }
+
+            $expiresAt = $this->signedRequest->get('expires', 0);
+
+            return new AccessToken($accessToken, $expiresAt);
+        }
+
+        return null;
+    }
+
+    /**
+     * Returns the SignedRequest entity.
+     *
+     * @return SignedRequest|null
+     */
+    public function getSignedRequest()
+    {
+        return $this->signedRequest;
+    }
+
+    /**
+     * Returns the user_id if available.
+     *
+     * @return string|null
+     */
+    public function getUserId()
+    {
+        return $this->signedRequest ? $this->signedRequest->getUserId() : null;
+    }
+
+    /**
+     * Get raw signed request from input.
+     *
+     * @return string|null
+     */
+    abstract public function getRawSignedRequest();
+
+    /**
+     * Get raw signed request from POST input.
+     *
+     * @return string|null
+     */
+    public function getRawSignedRequestFromPost()
+    {
+        if (isset($_POST['signed_request'])) {
+            return $_POST['signed_request'];
+        }
+
+        return null;
+    }
+
+    /**
+     * Get raw signed request from cookie set from the Javascript SDK.
+     *
+     * @return string|null
+     */
+    public function getRawSignedRequestFromCookie()
+    {
+        if (isset($_COOKIE['fbsr_' . $this->app->getId()])) {
+            return $_COOKIE['fbsr_' . $this->app->getId()];
+        }
+
+        return null;
+    }
+}

Facebook/Http/GraphRawResponse.php

@@ -0,0 +1,137 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\Http;
+
+/**
+ * Class GraphRawResponse
+ *
+ * @package Facebook
+ */
+class GraphRawResponse
+{
+    /**
+     * @var array The response headers in the form of an associative array.
+     */
+    protected $headers;
+
+    /**
+     * @var string The raw response body.
+     */
+    protected $body;
+
+    /**
+     * @var int The HTTP status response code.
+     */
+    protected $httpResponseCode;
+
+    /**
+     * Creates a new GraphRawResponse entity.
+     *
+     * @param string|array $headers        The headers as a raw string or array.
+     * @param string       $body           The raw response body.
+     * @param int          $httpStatusCode The HTTP response code (if sending headers as parsed array).
+     */
+    public function __construct($headers, $body, $httpStatusCode = null)
+    {
+        if (is_numeric($httpStatusCode)) {
+            $this->httpResponseCode = (int)$httpStatusCode;
+        }
+
+        if (is_array($headers)) {
+            $this->headers = $headers;
+        } else {
+            $this->setHeadersFromString($headers);
+        }
+
+        $this->body = $body;
+    }
+
+    /**
+     * Return the response headers.
+     *
+     * @return array
+     */
+    public function getHeaders()
+    {
+        return $this->headers;
+    }
+
+    /**
+     * Return the body of the response.
+     *
+     * @return string
+     */
+    public function getBody()
+    {
+        return $this->body;
+    }
+
+    /**
+     * Return the HTTP response code.
+     *
+     * @return int
+     */
+    public function getHttpResponseCode()
+    {
+        return $this->httpResponseCode;
+    }
+
+    /**
+     * Sets the HTTP response code from a raw header.
+     *
+     * @param string $rawResponseHeader
+     */
+    public function setHttpResponseCodeFromHeader($rawResponseHeader)
+    {
+        preg_match('|HTTP/\d\.\d\s+(\d+)\s+.*|', $rawResponseHeader, $match);
+        $this->httpResponseCode = (int)$match[1];
+    }
+
+    /**
+     * Parse the raw headers and set as an array.
+     *
+     * @param string $rawHeaders The raw headers from the response.
+     */
+    protected function setHeadersFromString($rawHeaders)
+    {
+        // Normalize line breaks
+        $rawHeaders = str_replace("\r\n", "\n", $rawHeaders);
+
+        // There will be multiple headers if a 301 was followed
+        // or a proxy was followed, etc
+        $headerCollection = explode("\n\n", trim($rawHeaders));
+        // We just want the last response (at the end)
+        $rawHeader = array_pop($headerCollection);
+
+        $headerComponents = explode("\n", $rawHeader);
+        foreach ($headerComponents as $line) {
+            if (strpos($line, ': ') === false) {
+                $this->setHttpResponseCodeFromHeader($line);
+            } else {
+                list($key, $value) = explode(': ', $line);
+                $this->headers[$key] = $value;
+            }
+        }
+    }
+}

Facebook/Http/RequestBodyInterface.php

@@ -0,0 +1,39 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\Http;
+
+/**
+ * Interface
+ *
+ * @package Facebook
+ */
+interface RequestBodyInterface
+{
+    /**
+     * Get the body of the request to send to Graph.
+     *
+     * @return string
+     */
+    public function getBody();
+}

Facebook/Http/RequestBodyMultipart.php

@@ -0,0 +1,170 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\Http;
+
+use Facebook\FileUpload\FacebookFile;
+
+/**
+ * Class RequestBodyMultipartt
+ *
+ * Some things copied from Guzzle
+ *
+ * @package Facebook
+ *
+ * @see https://github.com/guzzle/guzzle/blob/master/src/Post/MultipartBody.php
+ */
+class RequestBodyMultipart implements RequestBodyInterface
+{
+    /**
+     * @var string The boundary.
+     */
+    private $boundary;
+
+    /**
+     * @var array The parameters to send with this request.
+     */
+    private $params;
+
+    /**
+     * @var array The files to send with this request.
+     */
+    private $files = [];
+
+    /**
+     * @param array  $params   The parameters to send with this request.
+     * @param array  $files    The files to send with this request.
+     * @param string $boundary Provide a specific boundary.
+     */
+    public function __construct(array $params = [], array $files = [], $boundary = null)
+    {
+        $this->params = $params;
+        $this->files = $files;
+        $this->boundary = $boundary ?: uniqid();
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getBody()
+    {
+        $body = '';
+
+        // Compile normal params
+        $params = $this->getNestedParams($this->params);
+        foreach ($params as $k => $v) {
+            $body .= $this->getParamString($k, $v);
+        }
+
+        // Compile files
+        foreach ($this->files as $k => $v) {
+            $body .= $this->getFileString($k, $v);
+        }
+
+        // Peace out
+        $body .= "--{$this->boundary}--\r\n";
+
+        return $body;
+    }
+
+    /**
+     * Get the boundary
+     *
+     * @return string
+     */
+    public function getBoundary()
+    {
+        return $this->boundary;
+    }
+
+    /**
+     * Get the string needed to transfer a file.
+     *
+     * @param string       $name
+     * @param FacebookFile $file
+     *
+     * @return string
+     */
+    private function getFileString($name, FacebookFile $file)
+    {
+        return sprintf(
+            "--%s\r\nContent-Disposition: form-data; name=\"%s\"; filename=\"%s\"%s\r\n\r\n%s\r\n",
+            $this->boundary,
+            $name,
+            $file->getFileName(),
+            $this->getFileHeaders($file),
+            $file->getContents()
+        );
+    }
+
+    /**
+     * Get the string needed to transfer a POST field.
+     *
+     * @param string $name
+     * @param string $value
+     *
+     * @return string
+     */
+    private function getParamString($name, $value)
+    {
+        return sprintf(
+            "--%s\r\nContent-Disposition: form-data; name=\"%s\"\r\n\r\n%s\r\n",
+            $this->boundary,
+            $name,
+            $value
+        );
+    }
+
+    /**
+     * Returns the params as an array of nested params.
+     *
+     * @param array $params
+     *
+     * @return array
+     */
+    private function getNestedParams(array $params)
+    {
+        $query = http_build_query($params, null, '&');
+        $params = explode('&', $query);
+        $result = [];
+
+        foreach ($params as $param) {
+            list($key, $value) = explode('=', $param, 2);
+            $result[urldecode($key)] = urldecode($value);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Get the headers needed before transferring the content of a POST file.
+     *
+     * @param FacebookFile $file
+     *
+     * @return string
+     */
+    protected function getFileHeaders(FacebookFile $file)
+    {
+        return "\r\nContent-Type: {$file->getMimetype()}";
+    }
+}

Facebook/Http/RequestBodyUrlEncoded.php

@@ -0,0 +1,55 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\Http;
+
+/**
+ * Class RequestBodyUrlEncoded
+ *
+ * @package Facebook
+ */
+class RequestBodyUrlEncoded implements RequestBodyInterface
+{
+    /**
+     * @var array The parameters to send with this request.
+     */
+    protected $params = [];
+
+    /**
+     * Creates a new GraphUrlEncodedBody entity.
+     *
+     * @param array $params
+     */
+    public function __construct(array $params)
+    {
+        $this->params = $params;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getBody()
+    {
+        return http_build_query($this->params, null, '&');
+    }
+}

Facebook/HttpClients/FacebookCurl.php

@@ -0,0 +1,129 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\HttpClients;
+
+/**
+ * Class FacebookCurl
+ *
+ * Abstraction for the procedural curl elements so that curl can be mocked and the implementation can be tested.
+ *
+ * @package Facebook
+ */
+class FacebookCurl
+{
+
+    /**
+     * @var resource Curl resource instance
+     */
+    protected $curl;
+
+    /**
+     * Make a new curl reference instance
+     */
+    public function init()
+    {
+        $this->curl = curl_init();
+    }
+
+    /**
+     * Set a curl option
+     *
+     * @param $key
+     * @param $value
+     */
+    public function setopt($key, $value)
+    {
+        curl_setopt($this->curl, $key, $value);
+    }
+
+    /**
+     * Set an array of options to a curl resource
+     *
+     * @param array $options
+     */
+    public function setoptArray(array $options)
+    {
+        curl_setopt_array($this->curl, $options);
+    }
+
+    /**
+     * Send a curl request
+     *
+     * @return mixed
+     */
+    public function exec()
+    {
+        return curl_exec($this->curl);
+    }
+
+    /**
+     * Return the curl error number
+     *
+     * @return int
+     */
+    public function errno()
+    {
+        return curl_errno($this->curl);
+    }
+
+    /**
+     * Return the curl error message
+     *
+     * @return string
+     */
+    public function error()
+    {
+        return curl_error($this->curl);
+    }
+
+    /**
+     * Get info from a curl reference
+     *
+     * @param $type
+     *
+     * @return mixed
+     */
+    public function getinfo($type)
+    {
+        return curl_getinfo($this->curl, $type);
+    }
+
+    /**
+     * Get the currently installed curl version
+     *
+     * @return array
+     */
+    public function version()
+    {
+        return curl_version();
+    }
+
+    /**
+     * Close the resource connection to curl
+     */
+    public function close()
+    {
+        curl_close($this->curl);
+    }
+}

Facebook/HttpClients/FacebookCurlHttpClient.php

@@ -0,0 +1,210 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\HttpClients;
+
+use Facebook\Http\GraphRawResponse;
+use Facebook\Exceptions\FacebookSDKException;
+
+/**
+ * Class FacebookCurlHttpClient
+ *
+ * @package Facebook
+ */
+class FacebookCurlHttpClient implements FacebookHttpClientInterface
+{
+    /**
+     * @var string The client error message
+     */
+    protected $curlErrorMessage = '';
+
+    /**
+     * @var int The curl client error code
+     */
+    protected $curlErrorCode = 0;
+
+    /**
+     * @var string|boolean The raw response from the server
+     */
+    protected $rawResponse;
+
+    /**
+     * @var FacebookCurl Procedural curl as object
+     */
+    protected $facebookCurl;
+
+    /**
+     * @const Curl Version which is unaffected by the proxy header length error.
+     */
+    const CURL_PROXY_QUIRK_VER = 0x071E00;
+
+    /**
+     * @const "Connection Established" header text
+     */
+    const CONNECTION_ESTABLISHED = "HTTP/1.0 200 Connection established\r\n\r\n";
+
+    /**
+     * @param FacebookCurl|null Procedural curl as object
+     */
+    public function __construct(FacebookCurl $facebookCurl = null)
+    {
+        $this->facebookCurl = $facebookCurl ?: new FacebookCurl();
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function send($url, $method, $body, array $headers, $timeOut)
+    {
+        $this->openConnection($url, $method, $body, $headers, $timeOut);
+        $this->sendRequest();
+
+        if ($curlErrorCode = $this->facebookCurl->errno()) {
+            throw new FacebookSDKException($this->facebookCurl->error(), $curlErrorCode);
+        }
+
+        // Separate the raw headers from the raw body
+        list($rawHeaders, $rawBody) = $this->extractResponseHeadersAndBody();
+
+        $this->closeConnection();
+
+        return new GraphRawResponse($rawHeaders, $rawBody);
+    }
+
+    /**
+     * Opens a new curl connection.
+     *
+     * @param string $url     The endpoint to send the request to.
+     * @param string $method  The request method.
+     * @param string $body    The body of the request.
+     * @param array  $headers The request headers.
+     * @param int    $timeOut The timeout in seconds for the request.
+     */
+    public function openConnection($url, $method, $body, array $headers, $timeOut)
+    {
+        $options = [
+            CURLOPT_CUSTOMREQUEST => $method,
+            CURLOPT_HTTPHEADER => $this->compileRequestHeaders($headers),
+            CURLOPT_URL => $url,
+            CURLOPT_CONNECTTIMEOUT => 10,
+            CURLOPT_TIMEOUT => $timeOut,
+            CURLOPT_RETURNTRANSFER => true, // Follow 301 redirects
+            CURLOPT_HEADER => true, // Enable header processing
+            CURLOPT_SSL_VERIFYHOST => 2,
+            CURLOPT_SSL_VERIFYPEER => true,
+            CURLOPT_CAINFO => __DIR__ . '/certs/DigiCertHighAssuranceEVRootCA.pem',
+        ];
+
+        if ($method !== "GET") {
+            $options[CURLOPT_POSTFIELDS] = $body;
+        }
+
+        $this->facebookCurl->init();
+        $this->facebookCurl->setoptArray($options);
+    }
+
+    /**
+     * Closes an existing curl connection
+     */
+    public function closeConnection()
+    {
+        $this->facebookCurl->close();
+    }
+
+    /**
+     * Send the request and get the raw response from curl
+     */
+    public function sendRequest()
+    {
+        $this->rawResponse = $this->facebookCurl->exec();
+    }
+
+    /**
+     * Compiles the request headers into a curl-friendly format.
+     *
+     * @param array $headers The request headers.
+     *
+     * @return array
+     */
+    public function compileRequestHeaders(array $headers)
+    {
+        $return = [];
+
+        foreach ($headers as $key => $value) {
+            $return[] = $key . ': ' . $value;
+        }
+
+        return $return;
+    }
+
+    /**
+     * Extracts the headers and the body into a two-part array
+     *
+     * @return array
+     */
+    public function extractResponseHeadersAndBody()
+    {
+        $headerSize = $this->getHeaderSize();
+
+        $rawHeaders = mb_substr($this->rawResponse, 0, $headerSize);
+        $rawBody = mb_substr($this->rawResponse, $headerSize);
+
+        return [trim($rawHeaders), trim($rawBody)];
+    }
+
+    /**
+     * Return proper header size
+     *
+     * @return integer
+     */
+    private function getHeaderSize()
+    {
+        $headerSize = $this->facebookCurl->getinfo(CURLINFO_HEADER_SIZE);
+        // This corrects a Curl bug where header size does not account
+        // for additional Proxy headers.
+        if ($this->needsCurlProxyFix()) {
+            // Additional way to calculate the request body size.
+            if (preg_match('/Content-Length: (\d+)/', $this->rawResponse, $m)) {
+                $headerSize = mb_strlen($this->rawResponse) - $m[1];
+            } elseif (stripos($this->rawResponse, self::CONNECTION_ESTABLISHED) !== false) {
+                $headerSize += mb_strlen(self::CONNECTION_ESTABLISHED);
+            }
+        }
+
+        return $headerSize;
+    }
+
+    /**
+     * Detect versions of Curl which report incorrect header lengths when
+     * using Proxies.
+     *
+     * @return boolean
+     */
+    private function needsCurlProxyFix()
+    {
+        $ver = $this->facebookCurl->version();
+        $version = $ver['version_number'];
+
+        return $version < self::CURL_PROXY_QUIRK_VER;
+    }
+}

Facebook/HttpClients/FacebookGuzzleHttpClient.php

@@ -0,0 +1,97 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\HttpClients;
+
+use Facebook\Http\GraphRawResponse;
+use Facebook\Exceptions\FacebookSDKException;
+
+use GuzzleHttp\Client;
+use GuzzleHttp\Message\ResponseInterface;
+use GuzzleHttp\Ring\Exception\RingException;
+use GuzzleHttp\Exception\RequestException;
+
+class FacebookGuzzleHttpClient implements FacebookHttpClientInterface
+{
+    /**
+     * @var \GuzzleHttp\Client The Guzzle client.
+     */
+    protected $guzzleClient;
+
+    /**
+     * @param \GuzzleHttp\Client|null The Guzzle client.
+     */
+    public function __construct(Client $guzzleClient = null)
+    {
+        $this->guzzleClient = $guzzleClient ?: new Client();
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function send($url, $method, $body, array $headers, $timeOut)
+    {
+        $options = [
+            'headers' => $headers,
+            'body' => $body,
+            'timeout' => $timeOut,
+            'connect_timeout' => 10,
+            'verify' => __DIR__ . '/certs/DigiCertHighAssuranceEVRootCA.pem',
+        ];
+        $request = $this->guzzleClient->createRequest($method, $url, $options);
+
+        try {
+            $rawResponse = $this->guzzleClient->send($request);
+        } catch (RequestException $e) {
+            $rawResponse = $e->getResponse();
+
+            if ($e->getPrevious() instanceof RingException || !$rawResponse instanceof ResponseInterface) {
+                throw new FacebookSDKException($e->getMessage(), $e->getCode());
+            }
+        }
+
+        $rawHeaders = $this->getHeadersAsString($rawResponse);
+        $rawBody = $rawResponse->getBody();
+        $httpStatusCode = $rawResponse->getStatusCode();
+
+        return new GraphRawResponse($rawHeaders, $rawBody, $httpStatusCode);
+    }
+
+    /**
+     * Returns the Guzzle array of headers as a string.
+     *
+     * @param ResponseInterface $response The Guzzle response.
+     *
+     * @return string
+     */
+    public function getHeadersAsString(ResponseInterface $response)
+    {
+        $headers = $response->getHeaders();
+        $rawHeaders = [];
+        foreach ($headers as $name => $values) {
+            $rawHeaders[] = $name . ": " . implode(", ", $values);
+        }
+
+        return implode("\r\n", $rawHeaders);
+    }
+}

Facebook/HttpClients/FacebookHttpClientInterface.php

@@ -0,0 +1,47 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\HttpClients;
+
+/**
+ * Interface FacebookHttpClientInterface
+ *
+ * @package Facebook
+ */
+interface FacebookHttpClientInterface
+{
+    /**
+     * Sends a request to the server and returns the raw response.
+     *
+     * @param string $url     The endpoint to send the request to.
+     * @param string $method  The request method.
+     * @param string $body    The body of the request.
+     * @param array  $headers The request headers.
+     * @param int    $timeOut The timeout in seconds for the request.
+     *
+     * @return \Facebook\Http\GraphRawResponse Raw response from the server.
+     *
+     * @throws \Facebook\Exceptions\FacebookSDKException
+     */
+    public function send($url, $method, $body, array $headers, $timeOut);
+}

Facebook/HttpClients/FacebookStream.php

@@ -0,0 +1,80 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\HttpClients;
+
+/**
+ * Class FacebookStream
+ *
+ * Abstraction for the procedural stream elements so that the functions can be
+ * mocked and the implementation can be tested.
+ *
+ * @package Facebook
+ */
+class FacebookStream
+{
+    /**
+     * @var resource Context stream resource instance
+     */
+    protected $stream;
+
+    /**
+     * @var array Response headers from the stream wrapper
+     */
+    protected $responseHeaders;
+
+    /**
+     * Make a new context stream reference instance
+     *
+     * @param array $options
+     */
+    public function streamContextCreate(array $options)
+    {
+        $this->stream = stream_context_create($options);
+    }
+
+    /**
+     * The response headers from the stream wrapper
+     *
+     * @return array|null
+     */
+    public function getResponseHeaders()
+    {
+        return $this->responseHeaders;
+    }
+
+    /**
+     * Send a stream wrapped request
+     *
+     * @param string $url
+     *
+     * @return mixed
+     */
+    public function fileGetContents($url)
+    {
+        $rawResponse = file_get_contents($url, false, $this->stream);
+        $this->responseHeaders = $http_response_header;
+
+        return $rawResponse;
+    }
+}

Facebook/HttpClients/FacebookStreamHttpClient.php

@@ -0,0 +1,94 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\HttpClients;
+
+use Facebook\Http\GraphRawResponse;
+use Facebook\Exceptions\FacebookSDKException;
+
+class FacebookStreamHttpClient implements FacebookHttpClientInterface
+{
+    /**
+     * @var FacebookStream Procedural stream wrapper as object.
+     */
+    protected $facebookStream;
+
+    /**
+     * @param FacebookStream|null Procedural stream wrapper as object.
+     */
+    public function __construct(FacebookStream $facebookStream = null)
+    {
+        $this->facebookStream = $facebookStream ?: new FacebookStream();
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function send($url, $method, $body, array $headers, $timeOut)
+    {
+        $options = [
+            'http' => [
+                'method' => $method,
+                'header' => $this->compileHeader($headers),
+                'content' => $body,
+                'timeout' => $timeOut,
+                'ignore_errors' => true
+            ],
+            'ssl' => [
+                'verify_peer' => true,
+                'verify_peer_name' => true,
+                'allow_self_signed' => true, // All root certificates are self-signed
+                'cafile' => __DIR__ . '/certs/DigiCertHighAssuranceEVRootCA.pem',
+            ],
+        ];
+
+        $this->facebookStream->streamContextCreate($options);
+        $rawBody = $this->facebookStream->fileGetContents($url);
+        $rawHeaders = $this->facebookStream->getResponseHeaders();
+
+        if ($rawBody === false || !$rawHeaders) {
+            throw new FacebookSDKException('Stream returned an empty response', 660);
+        }
+
+        $rawHeaders = implode("\r\n", $rawHeaders);
+
+        return new GraphRawResponse($rawHeaders, $rawBody);
+    }
+
+    /**
+     * Formats the headers for use in the stream wrapper.
+     *
+     * @param array $headers The request headers.
+     *
+     * @return string
+     */
+    public function compileHeader(array $headers)
+    {
+        $header = [];
+        foreach ($headers as $k => $v) {
+            $header[] = $k . ': ' . $v;
+        }
+
+        return implode("\r\n", $header);
+    }
+}

Facebook/HttpClients/certs/DigiCertHighAssuranceEVRootCA.pem

@@ -0,0 +1,23 @@
+-----BEGIN CERTIFICATE-----
+MIIDxTCCAq2gAwIBAgIQAqxcJmoLQJuPC3nyrkYldzANBgkqhkiG9w0BAQUFADBs
+MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3
+d3cuZGlnaWNlcnQuY29tMSswKQYDVQQDEyJEaWdpQ2VydCBIaWdoIEFzc3VyYW5j
+ZSBFViBSb290IENBMB4XDTA2MTExMDAwMDAwMFoXDTMxMTExMDAwMDAwMFowbDEL
+MAkGA1UEBhMCVVMxFTATBgNVBAoTDERpZ2lDZXJ0IEluYzEZMBcGA1UECxMQd3d3
+LmRpZ2ljZXJ0LmNvbTErMCkGA1UEAxMiRGlnaUNlcnQgSGlnaCBBc3N1cmFuY2Ug
+RVYgUm9vdCBDQTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMbM5XPm
++9S75S0tMqbf5YE/yc0lSbZxKsPVlDRnogocsF9ppkCxxLeyj9CYpKlBWTrT3JTW
+PNt0OKRKzE0lgvdKpVMSOO7zSW1xkX5jtqumX8OkhPhPYlG++MXs2ziS4wblCJEM
+xChBVfvLWokVfnHoNb9Ncgk9vjo4UFt3MRuNs8ckRZqnrG0AFFoEt7oT61EKmEFB
+Ik5lYYeBQVCmeVyJ3hlKV9Uu5l0cUyx+mM0aBhakaHPQNAQTXKFx01p8VdteZOE3
+hzBWBOURtCmAEvF5OYiiAhF8J2a3iLd48soKqDirCmTCv2ZdlYTBoSUeh10aUAsg
+EsxBu24LUTi4S8sCAwEAAaNjMGEwDgYDVR0PAQH/BAQDAgGGMA8GA1UdEwEB/wQF
+MAMBAf8wHQYDVR0OBBYEFLE+w2kD+L9HAdSYJhoIAu9jZCvDMB8GA1UdIwQYMBaA
+FLE+w2kD+L9HAdSYJhoIAu9jZCvDMA0GCSqGSIb3DQEBBQUAA4IBAQAcGgaX3Nec
+nzyIZgYIVyHbIUf4KmeqvxgydkAQV8GK83rZEWWONfqe/EW1ntlMMUu4kehDLI6z
+eM7b41N5cdblIZQB2lWHmiRk9opmzN6cN82oNLFpmyPInngiK3BD41VHMWEZ71jF
+hS9OMPagMRYjyOfiZRYzy78aG6A9+MpeizGLYAiJLQwGXFK3xPkKmNEVX58Svnw2
+Yzi9RKR/5CYrCsSXaQ3pjOLAEFe4yHYSkVXySGnYvCoCWw9E1CAx2/S6cCZdkGCe
+vEsXCS+0yx5DaMkHJ8HSXPfqIbloEpw8nL+e/IBcm2PN7EeqJSdnoDfzAIJ9VNep
++OkuE6N36B9K
+-----END CERTIFICATE-----

Facebook/PersistentData/FacebookMemoryPersistentDataHandler.php

@@ -0,0 +1,53 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\PersistentData;
+
+/**
+ * Class FacebookMemoryPersistentDataHandler
+ *
+ * @package Facebook
+ */
+class FacebookMemoryPersistentDataHandler implements PersistentDataInterface
+{
+    /**
+     * @var array The session data to keep in memory.
+     */
+    protected $sessionData = [];
+
+    /**
+     * @inheritdoc
+     */
+    public function get($key)
+    {
+        return isset($this->sessionData[$key]) ? $this->sessionData[$key] : null;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function set($key, $value)
+    {
+        $this->sessionData[$key] = $value;
+    }
+}

Facebook/PersistentData/FacebookSessionPersistentDataHandler.php

@@ -0,0 +1,76 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\PersistentData;
+
+use Facebook\Exceptions\FacebookSDKException;
+
+/**
+ * Class FacebookSessionPersistentDataHandler
+ *
+ * @package Facebook
+ */
+class FacebookSessionPersistentDataHandler implements PersistentDataInterface
+{
+    /**
+     * @var string Prefix to use for session variables.
+     */
+    protected $sessionPrefix = 'FBRLH_';
+
+    /**
+     * Init the session handler.
+     *
+     * @param boolean $enableSessionCheck
+     *
+     * @throws FacebookSDKException
+     */
+    public function __construct($enableSessionCheck = true)
+    {
+        if ($enableSessionCheck && session_status() !== PHP_SESSION_ACTIVE) {
+            throw new FacebookSDKException(
+                'Sessions are not active. Please make sure session_start() is at the top of your script.',
+                720
+            );
+        }
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function get($key)
+    {
+        if (isset($_SESSION[$this->sessionPrefix . $key])) {
+            return $_SESSION[$this->sessionPrefix . $key];
+        }
+
+        return null;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function set($key, $value)
+    {
+        $_SESSION[$this->sessionPrefix . $key] = $value;
+    }
+}

Facebook/PersistentData/PersistentDataInterface.php

@@ -0,0 +1,49 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\PersistentData;
+
+/**
+ * Interface PersistentDataInterface
+ *
+ * @package Facebook
+ */
+interface PersistentDataInterface
+{
+    /**
+     * Get a value from a persistent data store.
+     *
+     * @param string $key
+     *
+     * @return mixed
+     */
+    public function get($key);
+
+    /**
+     * Set a value in the persistent data store.
+     *
+     * @param string $key
+     * @param mixed  $value
+     */
+    public function set($key, $value);
+}

Facebook/PseudoRandomString/McryptPseudoRandomStringGenerator.php

@@ -0,0 +1,68 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\PseudoRandomString;
+
+use Facebook\Exceptions\FacebookSDKException;
+
+class McryptPseudoRandomStringGenerator implements PseudoRandomStringGeneratorInterface
+{
+    use PseudoRandomStringGeneratorTrait;
+
+    /**
+     * @const string The error message when generating the string fails.
+     */
+    const ERROR_MESSAGE = 'Unable to generate a cryptographically secure pseudo-random string from mcrypt_create_iv(). ';
+
+    /**
+     * @throws FacebookSDKException
+     */
+    public function __construct()
+    {
+        if (!function_exists('mcrypt_create_iv')) {
+            throw new FacebookSDKException(
+                static::ERROR_MESSAGE .
+                'The function mcrypt_create_iv() does not exist.'
+            );
+        }
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getPseudoRandomString($length)
+    {
+        $this->validateLength($length);
+
+        $binaryString = mcrypt_create_iv($length, MCRYPT_DEV_URANDOM);
+
+        if ($binaryString === false) {
+            throw new FacebookSDKException(
+                static::ERROR_MESSAGE .
+                'mcrypt_create_iv() returned an error.'
+            );
+        }
+
+        return $this->binToHex($binaryString, $length);
+    }
+}

Facebook/PseudoRandomString/OpenSslPseudoRandomStringGenerator.php

@@ -0,0 +1,67 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\PseudoRandomString;
+
+use Facebook\Exceptions\FacebookSDKException;
+
+class OpenSslPseudoRandomStringGenerator implements PseudoRandomStringGeneratorInterface
+{
+    use PseudoRandomStringGeneratorTrait;
+
+    /**
+     * @const string The error message when generating the string fails.
+     */
+    const ERROR_MESSAGE = 'Unable to generate a cryptographically secure pseudo-random string from openssl_random_pseudo_bytes().';
+
+    /**
+     * @throws FacebookSDKException
+     */
+    public function __construct()
+    {
+        if (!function_exists('openssl_random_pseudo_bytes')) {
+            throw new FacebookSDKException(static::ERROR_MESSAGE . 'The function openssl_random_pseudo_bytes() does not exist.');
+        }
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getPseudoRandomString($length)
+    {
+        $this->validateLength($length);
+
+        $wasCryptographicallyStrong = false;
+        $binaryString = openssl_random_pseudo_bytes($length, $wasCryptographicallyStrong);
+
+        if ($binaryString === false) {
+            throw new FacebookSDKException(static::ERROR_MESSAGE . 'openssl_random_pseudo_bytes() returned an unknown error.');
+        }
+
+        if ($wasCryptographicallyStrong !== true) {
+            throw new FacebookSDKException(static::ERROR_MESSAGE . 'openssl_random_pseudo_bytes() returned a pseudo-random string but it was not cryptographically secure and cannot be used.');
+        }
+
+        return $this->binToHex($binaryString, $length);
+    }
+}

Facebook/PseudoRandomString/PseudoRandomStringGeneratorInterface.php

@@ -0,0 +1,45 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\PseudoRandomString;
+
+/**
+ * Interface
+ *
+ * @package Facebook
+ */
+interface PseudoRandomStringGeneratorInterface
+{
+    /**
+     * Get a cryptographically secure pseudo-random string of arbitrary length.
+     *
+     * @see http://sockpuppet.org/blog/2014/02/25/safely-generate-random-numbers/
+     *
+     * @param int $length The length of the string to return.
+     *
+     * @return string
+     *
+     * @throws \Facebook\Exceptions\FacebookSDKException|\InvalidArgumentException
+     */
+    public function getPseudoRandomString($length);
+}

Facebook/PseudoRandomString/PseudoRandomStringGeneratorTrait.php

@@ -0,0 +1,58 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\PseudoRandomString;
+
+trait PseudoRandomStringGeneratorTrait
+{
+    /**
+     * Validates the length argument of a random string.
+     *
+     * @param int $length The length to validate.
+     *
+     * @throws \InvalidArgumentException
+     */
+    public function validateLength($length)
+    {
+        if (!is_int($length)) {
+            throw new \InvalidArgumentException('getPseudoRandomString() expects an integer for the string length');
+        }
+
+        if ($length < 1) {
+            throw new \InvalidArgumentException('getPseudoRandomString() expects a length greater than 1');
+        }
+    }
+
+    /**
+     * Converts binary data to hexadecimal of arbitrary length.
+     *
+     * @param string $binaryData The binary data to convert to hex.
+     * @param int    $length     The length of the string to return.
+     *
+     * @return string
+     */
+    public function binToHex($binaryData, $length)
+    {
+        return mb_substr(bin2hex($binaryData), 0, $length);
+    }
+}

Facebook/PseudoRandomString/UrandomPseudoRandomStringGenerator.php

@@ -0,0 +1,89 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\PseudoRandomString;
+
+use Facebook\Exceptions\FacebookSDKException;
+
+class UrandomPseudoRandomStringGenerator implements PseudoRandomStringGeneratorInterface
+{
+
+    use PseudoRandomStringGeneratorTrait;
+
+    /**
+     * @const string The error message when generating the string fails.
+     */
+    const ERROR_MESSAGE = 'Unable to generate a cryptographically secure pseudo-random string from /dev/urandom. ';
+
+    /**
+     * @throws FacebookSDKException
+     */
+    public function __construct()
+    {
+        if (ini_get('open_basedir')) {
+            throw new FacebookSDKException(
+                static::ERROR_MESSAGE .
+                'There is an open_basedir constraint that prevents access to /dev/urandom.'
+            );
+        }
+
+        if (!is_readable('/dev/urandom')) {
+            throw new FacebookSDKException(
+                static::ERROR_MESSAGE .
+                'Unable to read from /dev/urandom.'
+            );
+        }
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getPseudoRandomString($length)
+    {
+        $this->validateLength($length);
+
+        $stream = fopen('/dev/urandom', 'rb');
+        if (!is_resource($stream)) {
+            throw new FacebookSDKException(
+                static::ERROR_MESSAGE .
+                'Unable to open stream to /dev/urandom.'
+            );
+        }
+
+        if (!defined('HHVM_VERSION')) {
+            stream_set_read_buffer($stream, 0);
+        }
+
+        $binaryString = fread($stream, $length);
+        fclose($stream);
+
+        if (!$binaryString) {
+            throw new FacebookSDKException(
+                static::ERROR_MESSAGE .
+                'Stream to /dev/urandom returned no data.'
+            );
+        }
+
+        return $this->binToHex($binaryString, $length);
+    }
+}

Facebook/SignedRequest.php

@@ -0,0 +1,332 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook;
+
+use Facebook\Exceptions\FacebookSDKException;
+
+/**
+ * Class SignedRequest
+ *
+ * @package Facebook
+ */
+class SignedRequest
+{
+    /**
+     * @var FacebookApp The FacebookApp entity.
+     */
+    protected $app;
+
+    /**
+     * @var string The raw encrypted signed request.
+     */
+    protected $rawSignedRequest;
+
+    /**
+     * @var array The payload from the decrypted signed request.
+     */
+    protected $payload;
+
+    /**
+     * Instantiate a new SignedRequest entity.
+     *
+     * @param FacebookApp $facebookApp      The FacebookApp entity.
+     * @param string|null $rawSignedRequest The raw signed request.
+     */
+    public function __construct(FacebookApp $facebookApp, $rawSignedRequest = null)
+    {
+        $this->app = $facebookApp;
+
+        if (!$rawSignedRequest) {
+            return;
+        }
+
+        $this->rawSignedRequest = $rawSignedRequest;
+
+        $this->parse();
+    }
+
+    /**
+     * Returns the raw signed request data.
+     *
+     * @return string|null
+     */
+    public function getRawSignedRequest()
+    {
+        return $this->rawSignedRequest;
+    }
+
+    /**
+     * Returns the parsed signed request data.
+     *
+     * @return array|null
+     */
+    public function getPayload()
+    {
+        return $this->payload;
+    }
+
+    /**
+     * Returns a property from the signed request data if available.
+     *
+     * @param string     $key
+     * @param mixed|null $default
+     *
+     * @return mixed|null
+     */
+    public function get($key, $default = null)
+    {
+        if (isset($this->payload[$key])) {
+            return $this->payload[$key];
+        }
+
+        return $default;
+    }
+
+    /**
+     * Returns user_id from signed request data if available.
+     *
+     * @return string|null
+     */
+    public function getUserId()
+    {
+        return $this->get('user_id');
+    }
+
+    /**
+     * Checks for OAuth data in the payload.
+     *
+     * @return boolean
+     */
+    public function hasOAuthData()
+    {
+        return $this->get('oauth_token') || $this->get('code');
+    }
+
+    /**
+     * Creates a signed request from an array of data.
+     *
+     * @param array $payload
+     *
+     * @return string
+     */
+    public function make(array $payload)
+    {
+        $payload['algorithm'] = isset($payload['algorithm']) ? $payload['algorithm'] : 'HMAC-SHA256';
+        $payload['issued_at'] = isset($payload['issued_at']) ? $payload['issued_at'] : time();
+        $encodedPayload = $this->base64UrlEncode(json_encode($payload));
+
+        $hashedSig = $this->hashSignature($encodedPayload);
+        $encodedSig = $this->base64UrlEncode($hashedSig);
+
+        return $encodedSig . '.' . $encodedPayload;
+    }
+
+    /**
+     * Validates and decodes a signed request and saves
+     * the payload to an array.
+     */
+    protected function parse()
+    {
+        list($encodedSig, $encodedPayload) = $this->split();
+
+        // Signature validation
+        $sig = $this->decodeSignature($encodedSig);
+        $hashedSig = $this->hashSignature($encodedPayload);
+        $this->validateSignature($hashedSig, $sig);
+
+        $this->payload = $this->decodePayload($encodedPayload);
+
+        // Payload validation
+        $this->validateAlgorithm();
+    }
+
+    /**
+     * Splits a raw signed request into signature and payload.
+     *
+     * @returns array
+     *
+     * @throws FacebookSDKException
+     */
+    protected function split()
+    {
+        if (strpos($this->rawSignedRequest, '.') === false) {
+            throw new FacebookSDKException('Malformed signed request.', 606);
+        }
+
+        return explode('.', $this->rawSignedRequest, 2);
+    }
+
+    /**
+     * Decodes the raw signature from a signed request.
+     *
+     * @param string $encodedSig
+     *
+     * @returns string
+     *
+     * @throws FacebookSDKException
+     */
+    protected function decodeSignature($encodedSig)
+    {
+        $sig = $this->base64UrlDecode($encodedSig);
+
+        if (!$sig) {
+            throw new FacebookSDKException('Signed request has malformed encoded signature data.', 607);
+        }
+
+        return $sig;
+    }
+
+    /**
+     * Decodes the raw payload from a signed request.
+     *
+     * @param string $encodedPayload
+     *
+     * @returns array
+     *
+     * @throws FacebookSDKException
+     */
+    protected function decodePayload($encodedPayload)
+    {
+        $payload = $this->base64UrlDecode($encodedPayload);
+
+        if ($payload) {
+            $payload = json_decode($payload, true);
+        }
+
+        if (!is_array($payload)) {
+            throw new FacebookSDKException('Signed request has malformed encoded payload data.', 607);
+        }
+
+        return $payload;
+    }
+
+    /**
+     * Validates the algorithm used in a signed request.
+     *
+     * @throws FacebookSDKException
+     */
+    protected function validateAlgorithm()
+    {
+        if ($this->get('algorithm') !== 'HMAC-SHA256') {
+            throw new FacebookSDKException('Signed request is using the wrong algorithm.', 605);
+        }
+    }
+
+    /**
+     * Hashes the signature used in a signed request.
+     *
+     * @param string $encodedData
+     *
+     * @return string
+     *
+     * @throws FacebookSDKException
+     */
+    protected function hashSignature($encodedData)
+    {
+        $hashedSig = hash_hmac(
+            'sha256',
+            $encodedData,
+            $this->app->getSecret(),
+            $raw_output = true
+        );
+
+        if (!$hashedSig) {
+            throw new FacebookSDKException('Unable to hash signature from encoded payload data.', 602);
+        }
+
+        return $hashedSig;
+    }
+
+    /**
+     * Validates the signature used in a signed request.
+     *
+     * @param string $hashedSig
+     * @param string $sig
+     *
+     * @throws FacebookSDKException
+     */
+    protected function validateSignature($hashedSig, $sig)
+    {
+        if (mb_strlen($hashedSig) === mb_strlen($sig)) {
+            $validate = 0;
+            for ($i = 0; $i < mb_strlen($sig); $i++) {
+                $validate |= ord($hashedSig[$i]) ^ ord($sig[$i]);
+            }
+            if ($validate === 0) {
+                return;
+            }
+        }
+
+        throw new FacebookSDKException('Signed request has an invalid signature.', 602);
+    }
+
+    /**
+     * Base64 decoding which replaces characters:
+     *   + instead of -
+     *   / instead of _
+     *
+     * @link http://en.wikipedia.org/wiki/Base64#URL_applications
+     *
+     * @param string $input base64 url encoded input
+     *
+     * @return string decoded string
+     */
+    public function base64UrlDecode($input)
+    {
+        $urlDecodedBase64 = strtr($input, '-_', '+/');
+        $this->validateBase64($urlDecodedBase64);
+
+        return base64_decode($urlDecodedBase64);
+    }
+
+    /**
+     * Base64 encoding which replaces characters:
+     *   + instead of -
+     *   / instead of _
+     *
+     * @link http://en.wikipedia.org/wiki/Base64#URL_applications
+     *
+     * @param string $input string to encode
+     *
+     * @return string base64 url encoded input
+     */
+    public function base64UrlEncode($input)
+    {
+        return strtr(base64_encode($input), '+/', '-_');
+    }
+
+    /**
+     * Validates a base64 string.
+     *
+     * @param string $input base64 value to validate
+     *
+     * @throws FacebookSDKException
+     */
+    protected function validateBase64($input)
+    {
+        if (!preg_match('/^[a-zA-Z0-9\/\r\n+]*={0,2}$/', $input)) {
+            throw new FacebookSDKException('Signed request contains malformed base64 encoding.', 608);
+        }
+    }
+}

Facebook/Url/FacebookUrlDetectionHandler.php

@@ -0,0 +1,163 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\Url;
+
+/**
+ * Class FacebookUrlDetectionHandler
+ *
+ * @package Facebook
+ */
+class FacebookUrlDetectionHandler implements UrlDetectionInterface
+{
+    /**
+     * @inheritdoc
+     */
+    public function getCurrentUrl()
+    {
+        return $this->getHttpScheme() . '://' . $this->getHostName() . $this->getServerVar('REQUEST_URI');
+    }
+
+    /**
+     * Get the currently active URL scheme.
+     *
+     * @return string
+     */
+    protected function getHttpScheme()
+    {
+        return $this->isBehindSsl() ? 'https' : 'http';
+    }
+
+    /**
+     * Tries to detect if the server is running behind an SSL.
+     *
+     * @return boolean
+     */
+    protected function isBehindSsl()
+    {
+        // Check for proxy first
+        $protocol = $this->getHeader('X_FORWARDED_PROTO');
+        if ($protocol) {
+            return $this->protocolWithActiveSsl($protocol);
+        }
+
+        $protocol = $this->getServerVar('HTTPS');
+        if ($protocol) {
+            return $this->protocolWithActiveSsl($protocol);
+        }
+
+        return (string)$this->getServerVar('SERVER_PORT') === '443';
+    }
+
+    /**
+     * Detects an active SSL protocol value.
+     *
+     * @param string $protocol
+     *
+     * @return boolean
+     */
+    protected function protocolWithActiveSsl($protocol)
+    {
+        $protocol = strtolower((string)$protocol);
+
+        return in_array($protocol, ['on', '1', 'https', 'ssl'], true);
+    }
+
+    /**
+     * Tries to detect the host name of the server.
+     *
+     * Some elements adapted from
+     *
+     * @see https://github.com/symfony/HttpFoundation/blob/master/Request.php
+     *
+     * @return string
+     */
+    protected function getHostName()
+    {
+        // Check for proxy first
+        if ($host = $this->getHeader('X_FORWARDED_HOST')) {
+            $elements = explode(',', $host);
+            $host = $elements[count($elements) - 1];
+        } elseif (!$host = $this->getHeader('HOST')) {
+            if (!$host = $this->getServerVar('SERVER_NAME')) {
+                $host = $this->getServerVar('SERVER_ADDR');
+            }
+        }
+
+        // trim and remove port number from host
+        // host is lowercase as per RFC 952/2181
+        $host = strtolower(preg_replace('/:\d+$/', '', trim($host)));
+
+        // Port number
+        $scheme = $this->getHttpScheme();
+        $port = $this->getCurrentPort();
+        $appendPort = ':' . $port;
+
+        // Don't append port number if a normal port.
+        if (($scheme == 'http' && $port == '80') || ($scheme == 'https' && $port == '443')) {
+            $appendPort = '';
+        }
+
+        return $host . $appendPort;
+    }
+
+    protected function getCurrentPort()
+    {
+        // Check for proxy first
+        $port = $this->getHeader('X_FORWARDED_PORT');
+        if ($port) {
+            return (string)$port;
+        }
+
+        $protocol = (string)$this->getHeader('X_FORWARDED_PROTO');
+        if ($protocol === 'https') {
+            return '443';
+        }
+
+        return (string)$this->getServerVar('SERVER_PORT');
+    }
+
+    /**
+     * Returns the a value from the $_SERVER super global.
+     *
+     * @param string $key
+     *
+     * @return string
+     */
+    protected function getServerVar($key)
+    {
+        return isset($_SERVER[$key]) ? $_SERVER[$key] : '';
+    }
+
+    /**
+     * Gets a value from the HTTP request headers.
+     *
+     * @param string $key
+     *
+     * @return string
+     */
+    protected function getHeader($key)
+    {
+        return $this->getServerVar('HTTP_' . $key);
+    }
+}

Facebook/Url/FacebookUrlManipulator.php

@@ -0,0 +1,167 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\Url;
+
+/**
+ * Class FacebookUrlManipulator
+ *
+ * @package Facebook
+ */
+class FacebookUrlManipulator
+{
+    /**
+     * Remove params from a URL.
+     *
+     * @param string $url            The URL to filter.
+     * @param array  $paramsToFilter The params to filter from the URL.
+     *
+     * @return string The URL with the params removed.
+     */
+    public static function removeParamsFromUrl($url, array $paramsToFilter)
+    {
+        $parts = parse_url($url);
+
+        $query = '';
+        if (isset($parts['query'])) {
+            $params = [];
+            parse_str($parts['query'], $params);
+
+            // Remove query params
+            foreach ($paramsToFilter as $paramName) {
+                unset($params[$paramName]);
+            }
+
+            if (count($params) > 0) {
+                $query = '?' . http_build_query($params, null, '&');
+            }
+        }
+
+        $scheme = isset($parts['scheme']) ? $parts['scheme'] . '://' : '';
+        $host = isset($parts['host']) ? $parts['host'] : '';
+        $port = isset($parts['port']) ? ':' . $parts['port'] : '';
+        $path = isset($parts['path']) ? $parts['path'] : '';
+        $fragment = isset($parts['fragment']) ? '#' . $parts['fragment'] : '';
+
+        return $scheme . $host . $port . $path . $query . $fragment;
+    }
+
+    /**
+     * Gracefully appends params to the URL.
+     *
+     * @param string $url       The URL that will receive the params.
+     * @param array  $newParams The params to append to the URL.
+     *
+     * @return string
+     */
+    public static function appendParamsToUrl($url, array $newParams = [])
+    {
+        if (!$newParams) {
+            return $url;
+        }
+
+        if (strpos($url, '?') === false) {
+            return $url . '?' . http_build_query($newParams, null, '&');
+        }
+
+        list($path, $query) = explode('?', $url, 2);
+        $existingParams = [];
+        parse_str($query, $existingParams);
+
+        // Favor params from the original URL over $newParams
+        $newParams = array_merge($newParams, $existingParams);
+
+        // Sort for a predicable order
+        ksort($newParams);
+
+        return $path . '?' . http_build_query($newParams, null, '&');
+    }
+
+    /**
+     * Returns the params from a URL in the form of an array.
+     *
+     * @param string $url The URL to parse the params from.
+     *
+     * @return array
+     */
+    public static function getParamsAsArray($url)
+    {
+        $query = parse_url($url, PHP_URL_QUERY);
+        if (!$query) {
+            return [];
+        }
+        $params = [];
+        parse_str($query, $params);
+
+        return $params;
+    }
+
+    /**
+     * Adds the params of the first URL to the second URL.
+     *
+     * Any params that already exist in the second URL will go untouched.
+     *
+     * @param string $urlToStealFrom The URL harvest the params from.
+     * @param string $urlToAddTo     The URL that will receive the new params.
+     *
+     * @return string The $urlToAddTo with any new params from $urlToStealFrom.
+     */
+    public static function mergeUrlParams($urlToStealFrom, $urlToAddTo)
+    {
+        $newParams = static::getParamsAsArray($urlToStealFrom);
+        // Nothing new to add, return as-is
+        if (!$newParams) {
+            return $urlToAddTo;
+        }
+
+        return static::appendParamsToUrl($urlToAddTo, $newParams);
+    }
+
+    /**
+     * Check for a "/" prefix and prepend it if not exists.
+     *
+     * @param string|null $string
+     *
+     * @return string|null
+     */
+    public static function forceSlashPrefix($string)
+    {
+        if (!$string) {
+            return $string;
+        }
+
+        return strpos($string, '/') === 0 ? $string : '/' . $string;
+    }
+
+    /**
+     * Trims off the hostname and Graph version from a URL.
+     *
+     * @param string $urlToTrim The URL the needs the surgery.
+     *
+     * @return string The $urlToTrim with the hostname and Graph version removed.
+     */
+    public static function baseGraphUrlEndpoint($urlToTrim)
+    {
+        return '/' . preg_replace('/^https:\/\/.+\.facebook\.com(\/v.+?)?\//', '', $urlToTrim);
+    }
+}

Facebook/Url/UrlDetectionInterface.php

@@ -0,0 +1,39 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook\Url;
+
+/**
+ * Interface UrlDetectionInterface
+ *
+ * @package Facebook
+ */
+interface UrlDetectionInterface
+{
+    /**
+     * Get the currently active URL.
+     *
+     * @return string
+     */
+    public function getCurrentUrl();
+}

Facebook/autoload.php

@@ -0,0 +1,79 @@
+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+/**
+ * You only need this file if you are not using composer.
+ * Why are you not using composer?
+ * https://getcomposer.org/
+ */
+
+if (version_compare(PHP_VERSION, '5.4.0', '<')) {
+    throw new Exception('The Facebook SDK requires PHP version 5.4 or higher.');
+}
+
+/**
+ * Register the autoloader for the Facebook SDK classes.
+ *
+ * Based off the official PSR-4 autoloader example found here:
+ * https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-4-autoloader-examples.md
+ *
+ * @param string $class The fully-qualified class name.
+ *
+ * @return void
+ */
+spl_autoload_register(function ($class) {
+    // project-specific namespace prefix
+    $prefix = 'Facebook\\';
+
+    // For backwards compatibility
+    $customBaseDir = '';
+    // @todo v6: Remove support for 'FACEBOOK_SDK_V4_SRC_DIR'
+    if (defined('FACEBOOK_SDK_V4_SRC_DIR')) {
+        $customBaseDir = FACEBOOK_SDK_V4_SRC_DIR;
+    } elseif (defined('FACEBOOK_SDK_SRC_DIR')) {
+        $customBaseDir = FACEBOOK_SDK_SRC_DIR;
+    }
+    // base directory for the namespace prefix
+    $baseDir = $customBaseDir ?: __DIR__ . '/';
+
+    // does the class use the namespace prefix?
+    $len = strlen($prefix);
+    if (strncmp($prefix, $class, $len) !== 0) {
+        // no, move to the next registered autoloader
+        return;
+    }
+
+    // get the relative class name
+    $relativeClass = substr($class, $len);
+
+    // replace the namespace prefix with the base directory, replace namespace
+    // separators with directory separators in the relative class name, append
+    // with .php
+    $file = rtrim($baseDir, '/') . '/' . str_replace('\\', '/', $relativeClass) . '.php';
+
+    // if the file exists, require it
+    if (file_exists($file)) {
+        require $file;
+    }
+});

composer.json

@@ -1,5 +0,0 @@
-{
-  "require": {
-    "php": "~5.5.12"
-  }
-}

css/custom.css

@@ -0,0 +1,76 @@
+
+.bg {
+  /* Set rules to fill background */
+  min-height: 100%;
+  min-width: 1024px;
+	
+  /* Set up proportionate scaling */
+  width: 100%;
+  height: auto;
+	
+  /* Set up positioning */
+  position: fixed;
+  top: 0;
+  left: 0;
+}
+
+@media screen and (max-width: 1024px) { /* Specific to this particular image */
+  .bg {
+    left: 50%;
+    margin-left: -512px;   /* 50% */
+  }
+}
+
+.row { 
+	position: relative;
+	width: 500px; 
+	margin: 50px auto; 
+	padding: 20px; 
+	background: white; 
+	-moz-box-shadow: 0 0 20px black; 
+	-webkit-box-shadow: 0 0 20px black; 
+	box-shadow: 0 0 20px black; 
+}
+
+.header{
+	text-align: center;
+}
+}
+
+
+
+img.profile{
+
+	display:block;
+	-moz-box-sizing: border-box;
+	box-sizing: border-box;
+	/*background: url(../images/modi.jpg) no-repeat center/75%;*/
+	width: 320px; /* Width of new image */
+	height: 380px; /* Height of new image */
+	margin: 0 auto;
+}
+
+h1 {
+	font-size: 28px;
+}
+
+a .button{
+	margin: 0 auto;
+	text-align: center;
+}
+
+.footer{
+	margin-top: 20px;
+	float: right;
+}
+
+
+ul.share-buttons li{
+  display: inline;
+
+}
+ul.share-buttons{
+	
+	padding:10px;
+	margin: 0 auto;
+}

css/normalize.css

@@ -0,0 +1,427 @@
+/*! normalize.css v3.0.2 | MIT License | git.io/normalize */
+
+/**
+ * 1. Set default font family to sans-serif.
+ * 2. Prevent iOS text size adjust after orientation change, without disabling
+ *    user zoom.
+ */
+
+html {
+  font-family: sans-serif; /* 1 */
+  -ms-text-size-adjust: 100%; /* 2 */
+  -webkit-text-size-adjust: 100%; /* 2 */
+}
+
+/**
+ * Remove default margin.
+ */
+
+body {
+  margin: 0;
+}
+
+/* HTML5 display definitions
+   ========================================================================== */
+
+/**
+ * Correct `block` display not defined for any HTML5 element in IE 8/9.
+ * Correct `block` display not defined for `details` or `summary` in IE 10/11
+ * and Firefox.
+ * Correct `block` display not defined for `main` in IE 11.
+ */
+
+article,
+aside,
+details,
+figcaption,
+figure,
+footer,
+header,
+hgroup,
+main,
+menu,
+nav,
+section,
+summary {
+  display: block;
+}
+
+/**
+ * 1. Correct `inline-block` display not defined in IE 8/9.
+ * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
+ */
+
+audio,
+canvas,
+progress,
+video {
+  display: inline-block; /* 1 */
+  vertical-align: baseline; /* 2 */
+}
+
+/**
+ * Prevent modern browsers from displaying `audio` without controls.
+ * Remove excess height in iOS 5 devices.
+ */
+
+audio:not([controls]) {
+  display: none;
+  height: 0;
+}
+
+/**
+ * Address `[hidden]` styling not present in IE 8/9/10.
+ * Hide the `template` element in IE 8/9/11, Safari, and Firefox < 22.
+ */
+
+[hidden],
+template {
+  display: none;
+}
+
+/* Links
+   ========================================================================== */
+
+/**
+ * Remove the gray background color from active links in IE 10.
+ */
+
+a {
+  background-color: transparent;
+}
+
+/**
+ * Improve readability when focused and also mouse hovered in all browsers.
+ */
+
+a:active,
+a:hover {
+  outline: 0;
+}
+
+/* Text-level semantics
+   ========================================================================== */
+
+/**
+ * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
+ */
+
+abbr[title] {
+  border-bottom: 1px dotted;
+}
+
+/**
+ * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
+ */
+
+b,
+strong {
+  font-weight: bold;
+}
+
+/**
+ * Address styling not present in Safari and Chrome.
+ */
+
+dfn {
+  font-style: italic;
+}
+
+/**
+ * Address variable `h1` font-size and margin within `section` and `article`
+ * contexts in Firefox 4+, Safari, and Chrome.
+ */
+
+h1 {
+  font-size: 2em;
+  margin: 0.67em 0;
+}
+
+/**
+ * Address styling not present in IE 8/9.
+ */
+
+mark {
+  background: #ff0;
+  color: #000;
+}
+
+/**
+ * Address inconsistent and variable font size in all browsers.
+ */
+
+small {
+  font-size: 80%;
+}
+
+/**
+ * Prevent `sub` and `sup` affecting `line-height` in all browsers.
+ */
+
+sub,
+sup {
+  font-size: 75%;
+  line-height: 0;
+  position: relative;
+  vertical-align: baseline;
+}
+
+sup {
+  top: -0.5em;
+}
+
+sub {
+  bottom: -0.25em;
+}
+
+/* Embedded content
+   ========================================================================== */
+
+/**
+ * Remove border when inside `a` element in IE 8/9/10.
+ */
+
+img {
+  border: 0;
+}
+
+/**
+ * Correct overflow not hidden in IE 9/10/11.
+ */
+
+svg:not(:root) {
+  overflow: hidden;
+}
+
+/* Grouping content
+   ========================================================================== */
+
+/**
+ * Address margin not present in IE 8/9 and Safari.
+ */
+
+figure {
+  margin: 1em 40px;
+}
+
+/**
+ * Address differences between Firefox and other browsers.
+ */
+
+hr {
+  -moz-box-sizing: content-box;
+  box-sizing: content-box;
+  height: 0;
+}
+
+/**
+ * Contain overflow in all browsers.
+ */
+
+pre {
+  overflow: auto;
+}
+
+/**
+ * Address odd `em`-unit font size rendering in all browsers.
+ */
+
+code,
+kbd,
+pre,
+samp {
+  font-family: monospace, monospace;
+  font-size: 1em;
+}
+
+/* Forms
+   ========================================================================== */
+
+/**
+ * Known limitation: by default, Chrome and Safari on OS X allow very limited
+ * styling of `select`, unless a `border` property is set.
+ */
+
+/**
+ * 1. Correct color not being inherited.
+ *    Known issue: affects color of disabled elements.
+ * 2. Correct font properties not being inherited.
+ * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
+ */
+
+button,
+input,
+optgroup,
+select,
+textarea {
+  color: inherit; /* 1 */
+  font: inherit; /* 2 */
+  margin: 0; /* 3 */
+}
+
+/**
+ * Address `overflow` set to `hidden` in IE 8/9/10/11.
+ */
+
+button {
+  overflow: visible;
+}
+
+/**
+ * Address inconsistent `text-transform` inheritance for `button` and `select`.
+ * All other form control elements do not inherit `text-transform` values.
+ * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
+ * Correct `select` style inheritance in Firefox.
+ */
+
+button,
+select {
+  text-transform: none;
+}
+
+/**
+ * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
+ *    and `video` controls.
+ * 2. Correct inability to style clickable `input` types in iOS.
+ * 3. Improve usability and consistency of cursor style between image-type
+ *    `input` and others.
+ */
+
+button,
+html input[type="button"], /* 1 */
+input[type="reset"],
+input[type="submit"] {
+  -webkit-appearance: button; /* 2 */
+  cursor: pointer; /* 3 */
+}
+
+/**
+ * Re-set default cursor for disabled elements.
+ */
+
+button[disabled],
+html input[disabled] {
+  cursor: default;
+}
+
+/**
+ * Remove inner padding and border in Firefox 4+.
+ */
+
+button::-moz-focus-inner,
+input::-moz-focus-inner {
+  border: 0;
+  padding: 0;
+}
+
+/**
+ * Address Firefox 4+ setting `line-height` on `input` using `!important` in
+ * the UA stylesheet.
+ */
+
+input {
+  line-height: normal;
+}
+
+/**
+ * It's recommended that you don't attempt to style these elements.
+ * Firefox's implementation doesn't respect box-sizing, padding, or width.
+ *
+ * 1. Address box sizing set to `content-box` in IE 8/9/10.
+ * 2. Remove excess padding in IE 8/9/10.
+ */
+
+input[type="checkbox"],
+input[type="radio"] {
+  box-sizing: border-box; /* 1 */
+  padding: 0; /* 2 */
+}
+
+/**
+ * Fix the cursor style for Chrome's increment/decrement buttons. For certain
+ * `font-size` values of the `input`, it causes the cursor style of the
+ * decrement button to change from `default` to `text`.
+ */
+
+input[type="number"]::-webkit-inner-spin-button,
+input[type="number"]::-webkit-outer-spin-button {
+  height: auto;
+}
+
+/**
+ * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
+ * 2. Address `box-sizing` set to `border-box` in Safari and Chrome
+ *    (include `-moz` to future-proof).
+ */
+
+input[type="search"] {
+  -webkit-appearance: textfield; /* 1 */
+  -moz-box-sizing: content-box;
+  -webkit-box-sizing: content-box; /* 2 */
+  box-sizing: content-box;
+}
+
+/**
+ * Remove inner padding and search cancel button in Safari and Chrome on OS X.
+ * Safari (but not Chrome) clips the cancel button when the search input has
+ * padding (and `textfield` appearance).
+ */
+
+input[type="search"]::-webkit-search-cancel-button,
+input[type="search"]::-webkit-search-decoration {
+  -webkit-appearance: none;
+}
+
+/**
+ * Define consistent border, margin, and padding.
+ */
+
+fieldset {
+  border: 1px solid #c0c0c0;
+  margin: 0 2px;
+  padding: 0.35em 0.625em 0.75em;
+}
+
+/**
+ * 1. Correct `color` not being inherited in IE 8/9/10/11.
+ * 2. Remove padding so people aren't caught out if they zero out fieldsets.
+ */
+
+legend {
+  border: 0; /* 1 */
+  padding: 0; /* 2 */
+}
+
+/**
+ * Remove default vertical scrollbar in IE 8/9/10/11.
+ */
+
+textarea {
+  overflow: auto;
+}
+
+/**
+ * Don't inherit the `font-weight` (applied by a rule above).
+ * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
+ */
+
+optgroup {
+  font-weight: bold;
+}
+
+/* Tables
+   ========================================================================== */
+
+/**
+ * Remove most spacing between table cells.
+ */
+
+table {
+  border-collapse: collapse;
+  border-spacing: 0;
+}
+
+td,
+th {
+  padding: 0;
+}

css/skeleton.css

@@ -0,0 +1,419 @@
+/*
+* Skeleton V2.0.4
+* Copyright 2014, Dave Gamache
+* www.getskeleton.com
+* Free to use under the MIT license.
+* http://www.opensource.org/licenses/mit-license.php
+* 12/29/2014
+*/
+
+
+/* Table of contents
+––––––––––––––––––––––––––––––––––––––––––––––––––
+- Grid
+- Base Styles
+- Typography
+- Links
+- Buttons
+- Forms
+- Lists
+- Code
+- Tables
+- Spacing
+- Utilities
+- Clearing
+- Media Queries
+*/
+
+
+/* Grid
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+.container {
+  position: relative;
+  width: 100%;
+  max-width: 960px;
+  margin: 0 auto;
+  padding: 0 20px;
+  box-sizing: border-box; }
+  
+.column,
+.columns {
+  width: 100%;
+  float: left;
+  box-sizing: border-box; }
+
+/* For devices larger than 400px */
+@media (min-width: 400px) {
+  .container {
+    width: 85%;
+    padding: 0; }
+}
+
+/* For devices larger than 550px */
+@media (min-width: 550px) {
+  .container {
+    width: 80%; }
+  .column,
+  .columns {
+    margin-left: 4%; }
+  .column:first-child,
+  .columns:first-child {
+    margin-left: 0; }
+
+  .one.column,
+  .one.columns                    { width: 4.66666666667%; }
+  .two.columns                    { width: 13.3333333333%; }
+  .three.columns                  { width: 22%;            }
+  .four.columns                   { width: 30.6666666667%; }
+  .five.columns                   { width: 39.3333333333%; }
+  .six.columns                    { width: 48%;            }
+  .seven.columns                  { width: 56.6666666667%; }
+  .eight.columns                  { width: 65.3333333333%; }
+  .nine.columns                   { width: 74.0%;          }
+  .ten.columns                    { width: 82.6666666667%; }
+  .eleven.columns                 { width: 91.3333333333%; }
+  .twelve.columns                 { width: 100%; margin-left: 0; }
+
+  .one-third.column               { width: 30.6666666667%; }
+  .two-thirds.column              { width: 65.3333333333%; }
+
+  .one-half.column                { width: 48%; }
+
+  /* Offsets */
+  .offset-by-one.column,
+  .offset-by-one.columns          { margin-left: 8.66666666667%; }
+  .offset-by-two.column,
+  .offset-by-two.columns          { margin-left: 17.3333333333%; }
+  .offset-by-three.column,
+  .offset-by-three.columns        { margin-left: 26%;            }
+  .offset-by-four.column,
+  .offset-by-four.columns         { margin-left: 34.6666666667%; }
+  .offset-by-five.column,
+  .offset-by-five.columns         { margin-left: 43.3333333333%; }
+  .offset-by-six.column,
+  .offset-by-six.columns          { margin-left: 52%;            }
+  .offset-by-seven.column,
+  .offset-by-seven.columns        { margin-left: 60.6666666667%; }
+  .offset-by-eight.column,
+  .offset-by-eight.columns        { margin-left: 69.3333333333%; }
+  .offset-by-nine.column,
+  .offset-by-nine.columns         { margin-left: 78.0%;          }
+  .offset-by-ten.column,
+  .offset-by-ten.columns          { margin-left: 86.6666666667%; }
+  .offset-by-eleven.column,
+  .offset-by-eleven.columns       { margin-left: 95.3333333333%; }
+
+  .offset-by-one-third.column,
+  .offset-by-one-third.columns    { margin-left: 34.6666666667%; }
+  .offset-by-two-thirds.column,
+  .offset-by-two-thirds.columns   { margin-left: 69.3333333333%; }
+
+  .offset-by-one-half.column,
+  .offset-by-one-half.columns     { margin-left: 52%; }
+
+}
+
+
+/* Base Styles
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+/* NOTE
+html is set to 62.5% so that all the REM measurements throughout Skeleton
+are based on 10px sizing. So basically 1.5rem = 15px :) */
+html {
+  font-size: 62.5%; }
+body {
+  font-size: 1.5em; /* currently ems cause chrome bug misinterpreting rems on body element */
+  line-height: 1.6;
+  font-weight: 400;
+  font-family: "Raleway", "HelveticaNeue", "Helvetica Neue", Helvetica, Arial, sans-serif;
+  color: #222; }
+
+
+/* Typography
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+h1, h2, h3, h4, h5, h6 {
+  margin-top: 0;
+  margin-bottom: 2rem;
+  font-weight: 300; }
+h1 { font-size: 4.0rem; line-height: 1.2;  letter-spacing: -.1rem;}
+h2 { font-size: 3.6rem; line-height: 1.25; letter-spacing: -.1rem; }
+h3 { font-size: 3.0rem; line-height: 1.3;  letter-spacing: -.1rem; }
+h4 { font-size: 2.4rem; line-height: 1.35; letter-spacing: -.08rem; }
+h5 { font-size: 1.8rem; line-height: 1.5;  letter-spacing: -.05rem; }
+h6 { font-size: 1.5rem; line-height: 1.6;  letter-spacing: 0; }
+
+/* Larger than phablet */
+@media (min-width: 550px) {
+  h1 { font-size: 5.0rem; }
+  h2 { font-size: 4.2rem; }
+  h3 { font-size: 3.6rem; }
+  h4 { font-size: 3.0rem; }
+  h5 { font-size: 2.4rem; }
+  h6 { font-size: 1.5rem; }
+}
+
+p {
+  margin-top: 0; }
+
+
+/* Links
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+a {
+  color: #1EAEDB; }
+a:hover {
+  color: #0FA0CE; }
+
+
+/* Buttons
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+.button,
+button,
+input[type="submit"],
+input[type="reset"],
+input[type="button"] {
+  display: inline-block;
+  height: 38px;
+  padding: 0 30px;
+  color: #555;
+  text-align: center;
+  font-size: 11px;
+  font-weight: 600;
+  line-height: 38px;
+  letter-spacing: .1rem;
+  text-transform: uppercase;
+  text-decoration: none;
+  white-space: nowrap;
+  background-color: transparent;
+  border-radius: 4px;
+  border: 1px solid #bbb;
+  cursor: pointer;
+  box-sizing: border-box; }
+.button:hover,
+button:hover,
+input[type="submit"]:hover,
+input[type="reset"]:hover,
+input[type="button"]:hover,
+.button:focus,
+button:focus,
+input[type="submit"]:focus,
+input[type="reset"]:focus,
+input[type="button"]:focus {
+  color: #333;
+  border-color: #888;
+  outline: 0; }
+.button.button-primary,
+button.button-primary,
+input[type="submit"].button-primary,
+input[type="reset"].button-primary,
+input[type="button"].button-primary {
+  color: #FFF;
+  background-color: #33C3F0;
+  border-color: #33C3F0; }
+.button.button-primary:hover,
+button.button-primary:hover,
+input[type="submit"].button-primary:hover,
+input[type="reset"].button-primary:hover,
+input[type="button"].button-primary:hover,
+.button.button-primary:focus,
+button.button-primary:focus,
+input[type="submit"].button-primary:focus,
+input[type="reset"].button-primary:focus,
+input[type="button"].button-primary:focus {
+  color: #FFF;
+  background-color: #1EAEDB;
+  border-color: #1EAEDB; }
+
+
+/* Forms
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+input[type="email"],
+input[type="number"],
+input[type="search"],
+input[type="text"],
+input[type="tel"],
+input[type="url"],
+input[type="password"],
+textarea,
+select {
+  height: 38px;
+  padding: 6px 10px; /* The 6px vertically centers text on FF, ignored by Webkit */
+  background-color: #fff;
+  border: 1px solid #D1D1D1;
+  border-radius: 4px;
+  box-shadow: none;
+  box-sizing: border-box; }
+/* Removes awkward default styles on some inputs for iOS */
+input[type="email"],
+input[type="number"],
+input[type="search"],
+input[type="text"],
+input[type="tel"],
+input[type="url"],
+input[type="password"],
+textarea {
+  -webkit-appearance: none;
+     -moz-appearance: none;
+          appearance: none; }
+textarea {
+  min-height: 65px;
+  padding-top: 6px;
+  padding-bottom: 6px; }
+input[type="email"]:focus,
+input[type="number"]:focus,
+input[type="search"]:focus,
+input[type="text"]:focus,
+input[type="tel"]:focus,
+input[type="url"]:focus,
+input[type="password"]:focus,
+textarea:focus,
+select:focus {
+  border: 1px solid #33C3F0;
+  outline: 0; }
+label,
+legend {
+  display: block;
+  margin-bottom: .5rem;
+  font-weight: 600; }
+fieldset {
+  padding: 0;
+  border-width: 0; }
+input[type="checkbox"],
+input[type="radio"] {
+  display: inline; }
+label > .label-body {
+  display: inline-block;
+  margin-left: .5rem;
+  font-weight: normal; }
+
+
+/* Lists
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+ul {
+  list-style: circle inside; }
+ol {
+  list-style: decimal inside; }
+ol, ul {
+  padding-left: 0;
+  margin-top: 0; }
+ul ul,
+ul ol,
+ol ol,
+ol ul {
+  margin: 1.5rem 0 1.5rem 3rem;
+  font-size: 90%; }
+li {
+  margin-bottom: 1rem; }
+
+
+/* Code
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+code {
+  padding: .2rem .5rem;
+  margin: 0 .2rem;
+  font-size: 90%;
+  white-space: nowrap;
+  background: #F1F1F1;
+  border: 1px solid #E1E1E1;
+  border-radius: 4px; }
+pre > code {
+  display: block;
+  padding: 1rem 1.5rem;
+  white-space: pre; }
+
+
+/* Tables
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+th,
+td {
+  padding: 12px 15px;
+  text-align: left;
+  border-bottom: 1px solid #E1E1E1; }
+th:first-child,
+td:first-child {
+  padding-left: 0; }
+th:last-child,
+td:last-child {
+  padding-right: 0; }
+
+
+/* Spacing
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+button,
+.button {
+  margin-bottom: 1rem; }
+input,
+textarea,
+select,
+fieldset {
+  margin-bottom: 1.5rem; }
+pre,
+blockquote,
+dl,
+figure,
+table,
+p,
+ul,
+ol,
+form {
+  margin-bottom: 2.5rem; }
+
+
+/* Utilities
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+.u-full-width {
+  width: 100%;
+  box-sizing: border-box; }
+.u-max-full-width {
+  max-width: 100%;
+  box-sizing: border-box; }
+.u-pull-right {
+  float: right; }
+.u-pull-left {
+  float: left; }
+
+
+/* Misc
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+hr {
+  margin-top: 3rem;
+  margin-bottom: 3.5rem;
+  border-width: 0;
+  border-top: 1px solid #E1E1E1; }
+
+
+/* Clearing
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+
+/* Self Clearing Goodness */
+.container:after,
+.row:after,
+.u-cf {
+  content: "";
+  display: table;
+  clear: both; }
+
+
+/* Media Queries
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+/*
+Note: The best way to structure the use of media queries is to create the queries
+near the relevant code. For example, if you wanted to change the styles for buttons
+on small devices, paste the mobile query code up in the buttons section and style it
+there.
+*/
+
+
+/* Larger than mobile */
+@media (min-width: 400px) {}
+
+/* Larger than phablet (also point when grid becomes active) */
+@media (min-width: 550px) {}
+
+/* Larger than tablet */
+@media (min-width: 750px) {}
+
+/* Larger than desktop */
+@media (min-width: 1000px) {}
+
+/* Larger than Desktop HD */
+@media (min-width: 1200px) {}