225 lines
7.6 KiB
PHP
225 lines
7.6 KiB
PHP
<?php
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/**
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* @brief Facebook Login Handler
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* @author <a href='http://www.invisionpower.com'>Invision Power Services, Inc.</a>
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* @copyright (c) 2001 - 2016 Invision Power Services, Inc.
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* @license http://www.invisionpower.com/legal/standards/
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* @package IPS Community Suite
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* @since 18 Mar 2013
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* @version SVN_VERSION_NUMBER
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*/
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namespace IPS\Login;
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/* To prevent PHP errors (extending class does not exist) revealing path */
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if ( !defined( '\IPS\SUITE_UNIQUE_KEY' ) )
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{
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header( ( isset( $_SERVER['SERVER_PROTOCOL'] ) ? $_SERVER['SERVER_PROTOCOL'] : 'HTTP/1.0' ) . ' 403 Forbidden' );
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exit;
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}
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/**
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* Facebook Login Handler
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*/
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class _Facebook extends LoginAbstract
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{
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/**
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* @brief Icon
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*/
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public static $icon = 'facebook-square';
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/**
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* @brief Share Service
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*/
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public static $shareService = 'facebook';
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/**
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* Get Form
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*
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* @param \IPS\Http\Url $url The URL for the login page
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* @param bool $ucp Is UCP? (as opposed to login form)
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* @param \IPS\Http\Url $destination The URL to redirect to after a successful login
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* @return string
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*/
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public function loginForm( \IPS\Http\Url $url, $ucp = FALSE, \IPS\Http\Url $destination = NULL )
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{
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$scope = 'email';
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if ( \IPS\Settings::i()->profile_comments )
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{
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if ( isset( $this->settings['allow_status_import'] ) and $this->settings['allow_status_import'] )
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{
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$scope .= ',user_posts';
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}
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if ( isset( $this->settings['autoshare'] ) and $this->settings['autoshare'] )
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{
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$scope .= ',publish_actions';
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}
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}
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$url = \IPS\Http\Url::external( "https://www.facebook.com/dialog/oauth" )->setQueryString( array(
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'client_id' => $this->settings['app_id'],
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'scope' => $scope,
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'redirect_uri' => (string) \IPS\Http\Url::internal( 'applications/core/interface/facebook/auth.php', 'none', NULL, array(), \IPS\Settings::i()->logins_over_https ? \IPS\Http\Url::PROTOCOL_HTTPS : 0 ),
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'state' => ( $ucp ? 'ucp' : \IPS\Dispatcher::i()->controllerLocation ) . '-' . \IPS\Session::i()->csrfKey . '-' . ( $destination ? base64_encode( $destination ) : '' )
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) );
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return \IPS\Theme::i()->getTemplate( 'login', 'core', 'global' )->facebook( (string) $url );
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}
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/**
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* Authenticate
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*
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* @param string $url The URL for the login page
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* @param \IPS\Member $member If we want to integrate this login method with an existing member, provide the member object
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* @return \IPS\Member
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* @throws \IPS\Login\Exception
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*/
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public function authenticate( $url, $member=NULL )
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{
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$url = $url->setQueryString( 'loginProcess', 'facebook' );
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try
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{
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/* CSRF Check */
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if ( \IPS\Request::i()->state !== \IPS\Session::i()->csrfKey )
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{
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throw new \IPS\Login\Exception( 'CSRF_FAIL', \IPS\Login\Exception::INTERNAL_ERROR );
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}
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/* Get a token */
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try
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{
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$response = \IPS\Http\Url::external( "https://graph.facebook.com/v2.8/oauth/access_token" )->request()->post( array(
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'client_id' => $this->settings['app_id'],
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'redirect_uri' => (string) \IPS\Http\Url::internal( 'applications/core/interface/facebook/auth.php', 'none', NULL, array(), \IPS\Settings::i()->logins_over_https ? \IPS\Http\Url::PROTOCOL_HTTPS : 0 ),
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'client_secret' => $this->settings['app_secret'],
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'code' => \IPS\Request::i()->code
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) )->decodeJson();
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}
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catch( \RuntimeException $e )
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{
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throw new \IPS\Login\Exception( 'generic_error', \IPS\Login\Exception::INTERNAL_ERROR );
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}
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/* Now exchange it for a one that will last a bit longer in case the user wants to use syncing */
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try
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{
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$response = \IPS\Http\Url::external( "https://graph.facebook.com/v2.8/oauth/access_token" )->request()->post( array(
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'grant_type' => 'fb_exchange_token',
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'client_id' => $this->settings['app_id'],
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'client_secret' => $this->settings['app_secret'],
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'fb_exchange_token' => $response['access_token']
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) )->decodeJson();
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}
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catch( \RuntimeException $e )
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{
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throw new \IPS\Login\Exception( 'generic_error', \IPS\Login\Exception::INTERNAL_ERROR );
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}
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/* Set up appsecret_proof https://developers.facebook.com/docs/graph-api/securing-requests */
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$appSecretProof = hash_hmac( 'sha256', $response['access_token'], $this->settings['app_secret'] );
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/* Get the user data */
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$userData = \IPS\Http\Url::external( "https://graph.facebook.com/me?fields=email,id,name&access_token={$response['access_token']}&appsecret_proof={$appSecretProof}" )->request()->get()->decodeJson();
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/* Find or create member */
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$member = $this->createOrUpdateAccount( $member ?: \IPS\Member::load( $userData['id'], 'fb_uid' ), array(
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'fb_uid' => $userData['id'],
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'fb_token' => $response['access_token']
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), $this->settings['real_name'] ? $userData['name'] : NULL, ( isset( $userData['email'] ) AND $userData['email'] ) ? $userData['email'] : NULL, $response['access_token'], array( 'photo' => TRUE, 'cover' => TRUE, 'status' => '' ) );
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/* Return */
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return $member;
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}
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catch ( \IPS\Http\Request\Exception $e )
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{
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throw new \IPS\Login\Exception( 'generic_error', \IPS\Login\Exception::INTERNAL_ERROR );
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}
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}
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/**
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* Link Account
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*
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* @param \IPS\Member $member The member
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* @param mixed $details Details as they were passed to the exception thrown in authenticate()
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* @return void
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*/
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public static function link( \IPS\Member $member, $details )
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{
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$userData = \IPS\Http\Url::external( "https://graph.facebook.com/me?access_token={$details}" )->request()->get()->decodeJson();
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$member->fb_uid = $userData['id'];
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$member->fb_token = $details;
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$member->save();
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}
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/**
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* ACP Settings Form
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*
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* @param string $url URL to redirect user to after successful submission
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* @return array List of settings to save - settings will be stored to core_login_handlers.login_settings DB field
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* @code
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return array( 'savekey' => new \IPS\Helpers\Form\[Type]( ... ), ... );
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* @endcode
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*/
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public function acpForm()
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{
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\IPS\Output::i()->sidebar['actions'] = array(
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'help' => array(
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'title' => 'help',
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'icon' => 'question-circle',
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'link' => \IPS\Http\Url::ips( 'docs/login_facebook' ),
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'target' => '_blank',
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'class' => ''
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),
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);
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$return = array(
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'app_id' => new \IPS\Helpers\Form\Text( 'login_facebook_app', ( isset( $this->settings['app_id'] ) ) ? $this->settings['app_id'] : '', TRUE ),
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'app_secret' => new \IPS\Helpers\Form\Text( 'login_facebook_secret', ( isset( $this->settings['app_secret'] ) ) ? $this->settings['app_secret'] : '', TRUE ),
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'real_name' => new \IPS\Helpers\Form\YesNo( 'login_real_name', ( isset( $this->settings['real_name'] ) ) ? $this->settings['real_name'] : FALSE, TRUE )
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);
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if ( \IPS\Settings::i()->profile_comments )
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{
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$return['allow_status_import'] = new \IPS\Helpers\Form\YesNo( 'login_facebook_allow_status_import', ( isset( $this->settings['allow_status_import'] ) ) ? $this->settings['allow_status_import'] : FALSE, FALSE );
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}
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return $return;
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}
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/**
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* Test Settings
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*
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* @return bool
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* @throws \InvalidArgumentException
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*/
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public function testSettings()
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{
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return TRUE;
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}
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/**
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* Can a member sign in with this login handler?
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* Used to ensure when a user disassociates a social login that they have some other way of logging in
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*
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* @param \IPS\Member $member The member
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* @return bool
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*/
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public function canProcess( \IPS\Member $member )
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{
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return ( $member->fb_uid and $member->fb_token );
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}
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/**
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* Can a member change their email/password with this login handler?
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*
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* @param string $type 'email' or 'password'
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* @param \IPS\Member $member The member
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* @return bool
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*/
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public function canChange( $type, \IPS\Member $member )
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{
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return FALSE;
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}
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} |