gnu-social/plugins/FacebookSSO/lib/facebookclient.php

641 lines
19 KiB
PHP
Raw Normal View History

2010-11-05 15:34:06 +09:00
<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Class for communicating with Facebook
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Plugin
* @package StatusNet
* @author Craig Andrews <candrews@integralblue.com>
* @author Zach Copley <zach@status.net>
* @copyright 2009-2010 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
if (!defined('STATUSNET')) {
exit(1);
}
/**
* Class for communication with Facebook
*
* @category Plugin
* @package StatusNet
* @author Zach Copley <zach@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
class Facebookclient
{
protected $facebook = null; // Facebook Graph client obj
protected $flink = null; // Foreign_link StatusNet -> Facebook
protected $notice = null; // The user's notice
protected $user = null; // Sender of the notice
protected $oldRestClient = null; // Old REST API client
function __constructor($notice)
{
$this->facebook = self::getFacebook();
$this->notice = $notice;
$this->flink = Foreign_link::getByUserID(
$notice->profile_id,
FACEBOOK_SERVICE
);
$this->user = $this->flink->getUser();
$this->oldRestClient = self::getOldRestClient();
}
/*
* Get and instance of the old REST API client for sending notices from
* users with Facebook links that pre-exist the Graph API
*/
static function getOldRestClient()
{
$apikey = common_config('facebook', 'apikey');
$secret = common_config('facebook', 'secret');
// If there's no app key and secret set in the local config, look
// for a global one
if (empty($apikey) || empty($secret)) {
$apikey = common_config('facebook', 'global_apikey');
$secret = common_config('facebook', 'global_secret');
}
return new FacebookRestClient($apikey, $secret, null);
}
/*
* Get an instance of the Facebook Graph SDK object
*
* @param string $appId Application
* @param string $secret Facebook API secret
*
* @return Facebook A Facebook SDK obj
*/
static function getFacebook($appId = null, $secret = null)
{
// Check defaults and configuration for application ID and secret
if (empty($appId)) {
$appId = common_config('facebook', 'appid');
}
if (empty($secret)) {
$secret = common_config('facebook', 'secret');
}
// If there's no app ID and secret set in the local config, look
// for a global one
if (empty($appId) || empty($secret)) {
$appId = common_config('facebook', 'global_appid');
$secret = common_config('facebook', 'global_secret');
}
return new Facebook(
array(
'appId' => $appId,
'secret' => $secret,
'cookie' => true
)
);
}
/*
* Broadcast a notice to Facebook
*
* @param Notice $notice the notice to send
*/
static function facebookBroadcastNotice($notice)
{
$client = new Facebookclient($notice);
$client->sendNotice();
}
/*
* Should the notice go to Facebook?
*/
function isFacebookBound() {
if (empty($this->flink)) {
common_log(
LOG_WARN,
sprintf(
"No Foreign_link to Facebook for the author of notice %d.",
$this->notice->id
),
__FILE__
);
return false;
}
// Avoid a loop
if ($this->notice->source == 'Facebook') {
common_log(
LOG_INFO,
sprintf(
'Skipping notice %d because its source is Facebook.',
$this->notice->id
),
__FILE__
);
return false;
}
// If the user does not want to broadcast to Facebook, move along
if (!($this->flink->noticesync & FOREIGN_NOTICE_SEND == FOREIGN_NOTICE_SEND)) {
common_log(
LOG_INFO,
sprintf(
'Skipping notice %d because user has FOREIGN_NOTICE_SEND bit off.',
$this->notice->id
),
__FILE__
);
return false;
}
// If it's not a reply, or if the user WANTS to send @-replies,
// then, yeah, it can go to Facebook.
if (!preg_match('/@[a-zA-Z0-9_]{1,15}\b/u', $this->notice->content) ||
($this->flink->noticesync & FOREIGN_NOTICE_SEND_REPLY)) {
return true;
}
return false;
}
/*
* Determine whether we should send this notice using the Graph API or the
* old REST API and then dispatch
*/
function sendNotice()
{
// If there's nothing in the credentials field try to send via
// the Old Rest API
if (empty($this->flink->credentials)) {
$this->sendOldRest();
} else {
// Otherwise we most likely have an access token
$this->sendGraph();
}
}
/*
* Send a notice to Facebook using the Graph API
*/
function sendGraph()
{
common_debug("Send notice via Graph API", __FILE__);
}
/*
* Send a notice to Facebook using the deprecated Old REST API. We need this
* for backwards compatibility. Users who signed up for Facebook bridging
* using the old Facebook Canvas application do not have an OAuth 2.0
* access token.
*/
function sendOldRest()
{
if (isFacebookBound()) {
try {
$canPublish = $this->checkPermission('publish_stream');
$canUpdate = $this->checkPermission('status_update');
// Post to Facebook
if ($notice->hasAttachments() && $canPublish == 1) {
$this->restPublishStream();
} elseif ($canUpdate == 1 || $canPublish == 1) {
$this->restStatusUpdate();
} else {
$msg = 'Not sending notice %d to Facebook because user %s '
. '(%d), fbuid %s, does not have \'status_update\' '
. 'or \'publish_stream\' permission.';
common_log(
LOG_WARNING,
sprintf(
$msg,
$this->notice->id,
$this->user->nickname,
$this->user->id,
$this->flink->foreign_id
),
__FILE__
);
}
} catch (FacebookRestClientException $e) {
return $this->handleFacebookError($e);
}
}
return true;
}
/*
* Query Facebook to to see if a user has permission
*
*
*
* @param $permission the permission to check for - must be either
* public_stream or status_update
*
* @return boolean result
*/
function checkPermission($permission)
{
if (!in_array($permission, array('publish_stream', 'status_update'))) {
throw new ServerExpception("No such permission!");
}
$fbuid = $this->flink->foreign_link;
common_debug(
sprintf(
'Checking for %s permission for user %s (%d), fbuid %s',
$permission,
$this->user->nickname,
$this->user->id,
$fbuid
),
__FILE__
);
// NOTE: $this->oldRestClient->users_hasAppPermission() has been
// returning bogus results, so we're using FQL to check for
// permissions
$fql = sprintf(
"SELECT %s FROM permissions WHERE uid = %s",
$permission,
$fbuid
);
$result = $this->oldRestClient->fql_query($fql);
$hasPermission = 0;
if (isset($result[0][$permission])) {
$canPublish = $result[0][$permission];
}
if ($hasPermission == 1) {
common_debug(
sprintf(
'%s (%d), fbuid %s has %s permission',
$permission,
$this->user->nickname,
$this->user->id,
$fbuid
),
__FILE__
);
return true;
} else {
$logMsg = '%s (%d), fbuid $fbuid does NOT have %s permission.'
. 'Facebook returned: %s';
common_debug(
sprintf(
$logMsg,
$this->user->nickname,
$this->user->id,
$permission,
$fbuid,
var_export($result, true)
),
__FILE__
);
return false;
}
}
function handleFacebookError($e)
{
$fbuid = $this->flink->foreign_id;
$code = $e->getCode();
$errmsg = $e->getMessage();
// XXX: Check for any others?
switch($code) {
case 100: // Invalid parameter
$msg = 'Facebook claims notice %d was posted with an invalid '
. 'parameter (error code 100 - %s) Notice details: '
. '[nickname=%s, user id=%d, fbuid=%d, content="%s"]. '
. 'Dequeing.';
common_log(
LOG_ERR, sprintf(
$msg,
$this->notice->id,
$errmsg,
$this->user->nickname,
$this->user->id,
$fbuid,
$this->notice->content
),
__FILE__
);
return true;
break;
case 200: // Permissions error
case 250: // Updating status requires the extended permission status_update
$this->disconnect();
return true; // dequeue
break;
case 341: // Feed action request limit reached
$msg = '%s (userid=%d, fbuid=%d) has exceeded his/her limit '
. 'for posting notices to Facebook today. Dequeuing '
. 'notice %d';
common_log(
LOG_INFO, sprintf(
$msg,
$user->nickname,
$user->id,
$fbuid,
$this->notice->id
),
__FILE__
);
// @fixme: We want to rety at a later time when the throttling has expired
// instead of just giving up.
return true;
break;
default:
$msg = 'Facebook returned an error we don\'t know how to deal with '
. 'when posting notice %d. Error code: %d, error message: "%s"'
. ' Notice details: [nickname=%s, user id=%d, fbuid=%d, '
. 'notice content="%s"]. Dequeing.';
common_log(
LOG_ERR, sprintf(
$msg,
$this->notice->id,
$code,
$errmsg,
$this->user->nickname,
$this->user->id,
$fbuid,
$this->notice->content
),
__FILE__
);
return true; // dequeue
break;
}
}
function restStatusUpdate()
{
$fbuid = $this->flink->foreign_id;
common_debug(
sprintf(
"Attempting to post notice %d as a status update for %s (%d), fbuid %s",
$this->notice->id,
$this->user->nickname,
$this->user->id,
$fbuid
),
__FILE__
);
$result = $this->oldRestClient->users_setStatus(
$this->notice->content,
$fbuid,
false,
true
);
common_log(
LOG_INFO,
sprintf(
"Posted notice %s as a status update for %s (%d), fbuid %s",
$this->notice->id,
$this->user->nickname,
$this->user->id,
$fbuid
),
__FILE__
);
}
function restPublishStream()
{
$fbuid = $this->flink->foreign_id;
common_debug(
sprintf(
'Attempting to post notice %d as stream item with attachment for '
. '%s (%d) fbuid %s',
$this->notice->id,
$this->user->nickname,
$this->user->id,
$fbuid
),
__FILE__
);
$fbattachment = format_attachments($notice->attachments());
$this->oldRestClient->stream_publish(
$this->notice->content,
$fbattachment,
null,
null,
$fbuid
);
common_log(
LOG_INFO,
sprintf(
'Posted notice %d as a stream item with attachment for %s '
. '(%d), fbuid %s',
$this->notice->id,
$this->user->nickname,
$this->user->id,
$fbuid
),
__FILE__
);
}
function format_attachments($attachments)
{
$fbattachment = array();
$fbattachment['media'] = array();
foreach($attachments as $attachment)
{
if($enclosure = $attachment->getEnclosure()){
$fbmedia = get_fbmedia_for_attachment($enclosure);
}else{
$fbmedia = get_fbmedia_for_attachment($attachment);
}
if($fbmedia){
$fbattachment['media'][]=$fbmedia;
}else{
$fbattachment['name'] = ($attachment->title ?
$attachment->title : $attachment->url);
$fbattachment['href'] = $attachment->url;
}
}
if(count($fbattachment['media'])>0){
unset($fbattachment['name']);
unset($fbattachment['href']);
}
return $fbattachment;
}
/**
* given an File objects, returns an associative array suitable for Facebook media
*/
function get_fbmedia_for_attachment($attachment)
{
$fbmedia = array();
if (strncmp($attachment->mimetype, 'image/', strlen('image/')) == 0) {
$fbmedia['type'] = 'image';
$fbmedia['src'] = $attachment->url;
$fbmedia['href'] = $attachment->url;
} else if ($attachment->mimetype == 'audio/mpeg') {
$fbmedia['type'] = 'mp3';
$fbmedia['src'] = $attachment->url;
}else if ($attachment->mimetype == 'application/x-shockwave-flash') {
$fbmedia['type'] = 'flash';
// http://wiki.developers.facebook.com/index.php/Attachment_%28Streams%29
// says that imgsrc is required... but we have no value to put in it
// $fbmedia['imgsrc']='';
$fbmedia['swfsrc'] = $attachment->url;
}else{
return false;
}
return $fbmedia;
}
function disconnect()
{
$fbuid = $this->flink->foreign_link;
common_log(
LOG_INFO,
sprintf(
'Removing Facebook link for %s (%d), fbuid %s',
$this->user->nickname,
$this->user->id,
$fbuid
),
__FILE__
);
$result = $flink->delete();
if (empty($result)) {
common_log(
LOG_ERR,
sprintf(
'Could not remove Facebook link for %s (%d), fbuid %s',
$this->user->nickname,
$this->user->id,
$fbuid
),
__FILE__
);
common_log_db_error($flink, 'DELETE', __FILE__);
}
// Notify the user that we are removing their Facebook link
$result = $this->mailFacebookDisconnect();
if (!$result) {
$msg = 'Unable to send email to notify %s (%d), fbuid %s '
. 'about his/her Facebook link being removed.';
common_log(
LOG_WARNING,
sprintf(
$msg,
$this->user->nickname,
$this->user->id,
$fbuid
),
__FILE__
);
}
}
/**
* Send a mail message to notify a user that her Facebook link
* has been terminated.
*
* @return boolean success flag
*/
function mailFacebookDisconnect()
{
$profile = $user->getProfile();
$siteName = common_config('site', 'name');
common_switch_locale($user->language);
$subject = sprintf(
_m('Your Facebook connection has been removed'),
$siteName
);
$msg = <<<BODY
Hi, %1$s. We're sorry to inform you we are unable to publish your notice to
Facebook, and have removed the connection between your %2$s account and Facebook.
This may have happened because you have removed permission for %2$s to post on
your behalf, or perhaps you have deactivated your Facebook account. You can
reconnect your %s account to Facebook at any time by logging in with Facebook
again.
BODY;
$body = sprintf(
_m($msg),
$this->user->nickname,
$siteName
);
common_switch_locale();
return mail_to_user($this->user, $subject, $body);
}
}