3 * StatusNet, the distributed open-source microblogging tool
5 * Class for communicating with Facebook
9 * LICENCE: This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU Affero General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU Affero General Public License for more details.
19 * You should have received a copy of the GNU Affero General Public License
20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
24 * @author Craig Andrews <candrews@integralblue.com>
25 * @author Zach Copley <zach@status.net>
26 * @copyright 2009-2010 StatusNet, Inc.
27 * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
28 * @link http://status.net/
31 if (!defined('STATUSNET')) {
36 * Class for communication with Facebook
40 * @author Zach Copley <zach@status.net>
41 * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
42 * @link http://status.net/
46 protected $facebook = null; // Facebook Graph client obj
47 protected $flink = null; // Foreign_link StatusNet -> Facebook
48 protected $notice = null; // The user's notice
49 protected $user = null; // Sender of the notice
51 function __construct($notice)
53 $this->facebook = self::getFacebook();
55 if (empty($this->facebook)) {
56 throw new FacebookApiException(
57 "Could not create Facebook client! Bad application ID or secret?"
61 $this->notice = $notice;
63 $this->flink = Foreign_link::getByUserID(
68 if (!empty($this->flink)) {
69 $this->user = $this->flink->getUser();
74 * Get an instance of the Facebook Graph SDK object
76 * @param string $appId Application
77 * @param string $secret Facebook API secret
79 * @return Facebook A Facebook SDK obj
81 static function getFacebook($appId = null, $secret = null)
83 // Check defaults and configuration for application ID and secret
85 $appId = common_config('facebook', 'appid');
89 $secret = common_config('facebook', 'secret');
92 // If there's no app ID and secret set in the local config, look
94 if (empty($appId) || empty($secret)) {
95 $appId = common_config('facebook', 'global_appid');
96 $secret = common_config('facebook', 'global_secret');
102 "Couldn't find Facebook application ID!",
107 if (empty($secret)) {
110 "Couldn't find Facebook application ID!",
125 * Broadcast a notice to Facebook
127 * @param Notice $notice the notice to send
129 static function facebookBroadcastNotice($notice)
131 $client = new Facebookclient($notice);
132 return $client->sendNotice();
136 * Should the notice go to Facebook?
138 function isFacebookBound() {
140 if (empty($this->flink)) {
141 // User hasn't setup bridging
146 if ($this->notice->source == 'Facebook') {
150 'Skipping notice %d because its source is Facebook.',
158 // If the user does not want to broadcast to Facebook, move along
159 if (!($this->flink->noticesync & FOREIGN_NOTICE_SEND == FOREIGN_NOTICE_SEND)) {
163 'Skipping notice %d because user has FOREIGN_NOTICE_SEND bit off.',
171 // If it's not a reply, or if the user WANTS to send @-replies,
172 // then, yeah, it can go to Facebook.
173 if (!preg_match('/@[a-zA-Z0-9_]{1,15}\b/u', $this->notice->content) ||
174 ($this->flink->noticesync & FOREIGN_NOTICE_SEND_REPLY)) {
182 * Determine whether we should send this notice using the Graph API or the
183 * old REST API and then dispatch
185 function sendNotice()
187 // If there's nothing in the credentials field try to send via
190 if ($this->isFacebookBound()) {
191 common_debug("notice is facebook bound", __FILE__);
192 if (empty($this->flink->credentials)) {
193 return $this->sendOldRest();
196 // Otherwise we most likely have an access token
197 return $this->sendGraph();
203 * Send a notice to Facebook using the Graph API
209 $fbuid = $this->flink->foreign_id;
213 "Attempting use Graph API to post notice %d as a stream item for %s (%d), fbuid %d",
215 $this->user->nickname,
223 'access_token' => $this->flink->credentials,
224 // XXX: Need to worrry about length of the message?
225 'message' => $this->notice->content
228 $attachments = $this->notice->attachments();
230 if (!empty($attachments)) {
232 // We can only send one attachment with the Graph API :(
234 $first = array_shift($attachments);
236 if (substr($first->mimetype, 0, 6) == 'image/'
239 array('application/x-shockwave-flash', 'audio/mpeg' ))) {
241 $params['picture'] = $first->url;
242 $params['caption'] = 'Click for full size';
243 $params['source'] = $first->url;
248 $result = $this->facebook->api(
249 sprintf('/%s/feed', $fbuid), 'post', $params
253 Notice_to_item::saveNew($this->notice->id, $result['id']);
258 "Posted notice %d as a stream item for %s (%d), fbuid %d",
260 $this->user->nickname,
267 } catch (FacebookApiException $e) {
268 return $this->handleFacebookError($e);
275 * Send a notice to Facebook using the deprecated Old REST API. We need this
276 * for backwards compatibility. Users who signed up for Facebook bridging
277 * using the old Facebook Canvas application do not have an OAuth 2.0
280 function sendOldRest()
284 $canPublish = $this->checkPermission('publish_stream');
285 $canUpdate = $this->checkPermission('status_update');
287 // We prefer to use stream.publish, because it can handle
288 // attachments and returns the ID of the published item
290 if ($canPublish == 1) {
291 $this->restPublishStream();
292 } else if ($canUpdate == 1) {
293 // as a last resort we can just update the user's "status"
294 $this->restStatusUpdate();
297 $msg = 'Not sending notice %d to Facebook because user %s '
298 . '(%d), fbuid %d, does not have \'status_update\' '
299 . 'or \'publish_stream\' permission.';
306 $this->user->nickname,
308 $this->flink->foreign_id
314 } catch (FacebookApiException $e) {
315 return $this->handleFacebookError($e);
322 * Query Facebook to to see if a user has permission
326 * @param $permission the permission to check for - must be either
327 * public_stream or status_update
329 * @return boolean result
331 function checkPermission($permission)
333 if (!in_array($permission, array('publish_stream', 'status_update'))) {
334 throw new ServerException("No such permission!");
337 $fbuid = $this->flink->foreign_id;
341 'Checking for %s permission for user %s (%d), fbuid %d',
343 $this->user->nickname,
350 $hasPermission = $this->facebook->api(
352 'method' => 'users.hasAppPermission',
353 'ext_perm' => $permission,
358 if ($hasPermission == 1) {
362 '%s (%d), fbuid %d has %s permission',
364 $this->user->nickname,
375 $logMsg = '%s (%d), fbuid $fbuid does NOT have %s permission.'
376 . 'Facebook returned: %s';
381 $this->user->nickname,
385 var_export($result, true)
396 * Handle a Facebook API Exception
398 * @param FacebookApiException $e the exception
401 function handleFacebookError($e)
403 $fbuid = $this->flink->foreign_id;
404 $errmsg = $e->getMessage();
405 $code = $e->getCode();
407 // The Facebook PHP SDK seems to always set the code attribute
408 // of the Exception to 0; they put the real error code in
411 preg_match('/^\(#(?<code>\d+)\)/', $errmsg, $matches);
412 $code = $matches['code'];
415 // XXX: Check for any others?
417 case 100: // Invalid parameter
418 $msg = 'Facebook claims notice %d was posted with an invalid '
419 . 'parameter (error code 100 - %s) Notice details: '
420 . '[nickname=%s, user id=%d, fbuid=%d, content="%s"]. '
427 $this->user->nickname,
430 $this->notice->content
436 case 200: // Permissions error
437 case 250: // Updating status requires the extended permission status_update
439 return true; // dequeue
441 case 341: // Feed action request limit reached
442 $msg = '%s (userid=%d, fbuid=%d) has exceeded his/her limit '
443 . 'for posting notices to Facebook today. Dequeuing '
455 // @fixme: We want to rety at a later time when the throttling has expired
456 // instead of just giving up.
460 $msg = 'Facebook returned an error we don\'t know how to deal with '
461 . 'when posting notice %d. Error code: %d, error message: "%s"'
462 . ' Notice details: [nickname=%s, user id=%d, fbuid=%d, '
463 . 'notice content="%s"]. Dequeing.';
470 $this->user->nickname,
473 $this->notice->content
477 return true; // dequeue
483 * Publish a notice to Facebook as a status update
485 * This is the least preferable way to send a notice to Facebook because
486 * it doesn't support attachments and the API method doesn't return
487 * the ID of the post on Facebook.
490 function restStatusUpdate()
492 $fbuid = $this->flink->foreign_id;
496 "Attempting to post notice %d as a status update for %s (%d), fbuid %d",
498 $this->user->nickname,
505 $result = $this->facebook->api(
507 'method' => 'users.setStatus',
508 'status' => $this->formatMessage(),
509 'status_includes_verb' => true,
514 if ($result == 1) { // 1 is success
519 "Posted notice %s as a status update for %s (%d), fbuid %d",
521 $this->user->nickname,
528 // There is no item ID returned for status update so we can't
529 // save a Notice_to_item mapping
534 "Error posting notice %s as a status update for %s (%d), fbuid %d - error code: %s",
536 $this->user->nickname,
539 $result // will contain 0, or an error
542 throw new FacebookApiException($msg, $result);
547 * Publish a notice to a Facebook user's stream using the old REST API
549 function restPublishStream()
551 $fbuid = $this->flink->foreign_id;
555 'Attempting to post notice %d as stream item for %s (%d) fbuid %d',
557 $this->user->nickname,
564 $fbattachment = $this->formatAttachments();
566 $result = $this->facebook->api(
568 'method' => 'stream.publish',
569 'message' => $this->formatMessage(),
570 'attachment' => $fbattachment,
575 if (!empty($result)) { // result will contain the item ID
578 Notice_to_item::saveNew($this->notice->id, $result);
583 'Posted notice %d as a %s for %s (%d), fbuid %d',
585 empty($fbattachment) ? 'stream item' : 'stream item with attachment',
586 $this->user->nickname,
596 'Could not post notice %d as a %s for %s (%d), fbuid %d - error code: %s',
598 empty($fbattachment) ? 'stream item' : 'stream item with attachment',
599 $this->user->nickname,
601 $result, // result will contain an error code
605 throw new FacebookApiException($msg, $result);
610 * Format the text message of a stream item so it's appropriate for
611 * sending to Facebook. If the notice is too long, truncate it, and
612 * add a linkback to the original notice at the end.
614 * @return String $txt the formated message
616 function formatMessage()
618 // Start with the plaintext source of this notice...
619 $txt = $this->notice->content;
621 // Facebook has a 420-char hardcoded max.
622 if (mb_strlen($statustxt) > 420) {
623 $noticeUrl = common_shorten_url($this->notice->uri);
624 $urlLen = mb_strlen($noticeUrl);
625 $txt = mb_substr($statustxt, 0, 420 - ($urlLen + 3)) . ' … ' . $noticeUrl;
632 * Format attachments for the old REST API stream.publish method
634 * Note: Old REST API supports multiple attachments per post
637 function formatAttachments()
639 $attachments = $this->notice->attachments();
641 $fbattachment = array();
642 $fbattachment['media'] = array();
644 foreach($attachments as $attachment)
646 if($enclosure = $attachment->getEnclosure()){
647 $fbmedia = $this->getFacebookMedia($enclosure);
649 $fbmedia = $this->getFacebookMedia($attachment);
652 $fbattachment['media'][]=$fbmedia;
654 $fbattachment['name'] = ($attachment->title ?
655 $attachment->title : $attachment->url);
656 $fbattachment['href'] = $attachment->url;
659 if(count($fbattachment['media'])>0){
660 unset($fbattachment['name']);
661 unset($fbattachment['href']);
663 return $fbattachment;
667 * given a File objects, returns an associative array suitable for Facebook media
669 function getFacebookMedia($attachment)
673 if (strncmp($attachment->mimetype, 'image/', strlen('image/')) == 0) {
674 $fbmedia['type'] = 'image';
675 $fbmedia['src'] = $attachment->url;
676 $fbmedia['href'] = $attachment->url;
677 } else if ($attachment->mimetype == 'audio/mpeg') {
678 $fbmedia['type'] = 'mp3';
679 $fbmedia['src'] = $attachment->url;
680 }else if ($attachment->mimetype == 'application/x-shockwave-flash') {
681 $fbmedia['type'] = 'flash';
683 // http://wiki.developers.facebook.com/index.php/Attachment_%28Streams%29
684 // says that imgsrc is required... but we have no value to put in it
685 // $fbmedia['imgsrc']='';
687 $fbmedia['swfsrc'] = $attachment->url;
695 * Disconnect a user from Facebook by deleting his Foreign_link.
696 * Notifies the user his account has been disconnected by email.
698 function disconnect()
700 $fbuid = $this->flink->foreign_id;
705 'Removing Facebook link for %s (%d), fbuid %d',
706 $this->user->nickname,
713 $result = $this->flink->delete();
715 if (empty($result)) {
719 'Could not remove Facebook link for %s (%d), fbuid %d',
720 $this->user->nickname,
726 common_log_db_error($flink, 'DELETE', __FILE__);
729 // Notify the user that we are removing their Facebook link
730 if (!empty($this->user->email)) {
731 $result = $this->mailFacebookDisconnect();
735 $msg = 'Unable to send email to notify %s (%d), fbuid %d '
736 . 'about his/her Facebook link being removed.';
742 $this->user->nickname,
752 $msg = 'Unable to send email to notify %s (%d), fbuid %d '
753 . 'about his/her Facebook link being removed because the '
754 . 'user has not set an email address.';
760 $this->user->nickname,
770 * Send a mail message to notify a user that her Facebook link
771 * has been terminated.
773 * @return boolean success flag
775 function mailFacebookDisconnect()
777 $profile = $this->user->getProfile();
779 $siteName = common_config('site', 'name');
781 common_switch_locale($this->user->language);
783 $subject = _m('Your Facebook connection has been removed');
788 We're sorry to inform you we are unable to publish your notice to
789 Facebook, and have removed the connection between your %2$s account and
792 This may have happened because you have removed permission for %2$s
793 to post on your behalf, or perhaps you have deactivated your Facebook
794 account. You can reconnect your %s account to Facebook at any time by
795 logging in with Facebook again.
803 $this->user->nickname,
807 common_switch_locale();
809 $result = mail_to_user($this->user, $subject, $body);
811 if (empty($this->user->password)) {
812 $result = self::emailWarn($this->user);
819 * Send the user an email warning that their account has been
820 * disconnected and he/she has no way to login and must contact
821 * the site administrator for help.
823 * @param User $user the deauthorizing user
826 static function emailWarn($user)
828 $profile = $user->getProfile();
830 $siteName = common_config('site', 'name');
831 $siteEmail = common_config('site', 'email');
833 if (empty($siteEmail)) {
836 "No site email address configured. Please set one."
840 common_switch_locale($user->language);
842 $subject = _m('Contact the %s administrator to retrieve your account');
847 We've noticed you have deauthorized the Facebook connection for your
848 %2$s account. You have not set a password for your %2$s account yet, so
849 you will not be able to login. If you wish to continue using your %2$s
850 account, please contact the site administrator (%3$s) to set a password.
863 common_switch_locale();
865 if (mail_to_user($user, $subject, $body)) {
869 'Sent account lockout warning to %s (%d)',
879 'Unable to send account lockout warning to %s (%d)',
889 * Check to see if we have a mapping to a copy of this notice
892 * @param Notice $notice the notice to check
894 * @return mixed null if it can't find one, or the id of the Facebook
897 static function facebookStatusId($notice)
899 $n2i = Notice_to_item::staticGet('notice_id', $notice->id);
904 return $n2i->item_id;
909 * Save a Foreign_user record of a Facebook user
911 * @param object $fbuser a Facebook Graph API user obj
912 * See: http://developers.facebook.com/docs/reference/api/user
913 * @return mixed $result Id or key
916 static function addFacebookUser($fbuser)
918 // remove any existing, possibly outdated, record
919 $luser = Foreign_user::getForeignUser($fbuser['id'], FACEBOOK_SERVICE);
921 if (!empty($luser)) {
923 $result = $luser->delete();
925 if ($result != false) {
929 'Removed old Facebook user: %s, fbuid %d',
938 $fuser = new Foreign_user();
940 $fuser->nickname = $fbuser['name'];
941 $fuser->uri = $fbuser['link'];
942 $fuser->id = $fbuser['id'];
943 $fuser->service = FACEBOOK_SERVICE;
944 $fuser->created = common_sql_now();
946 $result = $fuser->insert();
948 if (empty($result)) {
952 'Failed to add new Facebook user: %s, fbuid %d',
959 common_log_db_error($fuser, 'INSERT', __FILE__);
964 'Added new Facebook user: %s, fbuid %d',
976 * Remove an item from a Facebook user's feed if we have a mapping
979 function streamRemove()
981 $n2i = Notice_to_item::staticGet('notice_id', $this->notice->id);
983 if (!empty($this->flink) && !empty($n2i)) {
987 $result = $this->facebook->api(
989 'method' => 'stream.remove',
990 'post_id' => $n2i->item_id,
991 'uid' => $this->flink->foreign_id
995 if (!empty($result) && result == true) {
1000 'Deleted Facebook item: %s for %s (%d), fbuid %d',
1002 $this->user->nickname,
1004 $this->flink->foreign_id
1012 throw new FaceboookApiException(var_export($result, true));
1015 } catch (FacebookApiException $e) {
1019 'Could not deleted Facebook item: %s for %s (%d), '
1020 . 'fbuid %d - (API error: %s) item already deleted '
1023 $this->user->nickname,
1025 $this->flink->foreign_id,
1035 * Like an item in a Facebook user's feed if we have a mapping
1040 $n2i = Notice_to_item::staticGet('notice_id', $this->notice->id);
1042 if (!empty($this->flink) && !empty($n2i)) {
1046 $result = $this->facebook->api(
1048 'method' => 'stream.addlike',
1049 'post_id' => $n2i->item_id,
1050 'uid' => $this->flink->foreign_id
1054 if (!empty($result) && result == true) {
1059 'Added like for item: %s for %s (%d), fbuid %d',
1061 $this->user->nickname,
1063 $this->flink->foreign_id
1069 throw new FacebookApiException(var_export($result, true));
1072 } catch (FacebookApiException $e) {
1076 'Could not like Facebook item: %s for %s (%d), '
1077 . 'fbuid %d (API error: %s)',
1079 $this->user->nickname,
1081 $this->flink->foreign_id,
1091 * Unlike an item in a Facebook user's feed if we have a mapping
1096 $n2i = Notice_to_item::staticGet('notice_id', $this->notice->id);
1098 if (!empty($this->flink) && !empty($n2i)) {
1102 $result = $this->facebook->api(
1104 'method' => 'stream.removeLike',
1105 'post_id' => $n2i->item_id,
1106 'uid' => $this->flink->foreign_id
1110 if (!empty($result) && result == true) {
1115 'Removed like for item: %s for %s (%d), fbuid %d',
1117 $this->user->nickname,
1119 $this->flink->foreign_id
1125 throw new FacebookApiException(var_export($result, true));
1128 } catch (FacebookApiException $e) {
1132 'Could not remove like for Facebook item: %s for %s '
1133 . '(%d), fbuid %d (API error: %s)',
1135 $this->user->nickname,
1137 $this->flink->foreign_id,