3 * Name: Facebook Connector
5 * Author: Mike Macgirvin <http://macgirvin.com/profile/mike>
6 * Tobias Hößl <https://github.com/CatoTH/>
10 * Installing the Friendica/Facebook connector
12 * 1. register an API key for your site from developer.facebook.com
13 * a. We'd be very happy if you include "Friendica" in the application name
14 * to increase name recognition. The Friendica icons are also present
15 * in the images directory and may be uploaded as a Facebook app icon.
16 * Use images/friendica-16.jpg for the Icon and images/friendica-128.jpg for the Logo.
17 * b. The url should be your site URL with a trailing slash.
18 * Friendica is a software application and does not require a Privacy Policy
19 * or Terms of Service, though your installation of it might. Facebook may require
20 * that you provide a Privacy Policy, which we find ironic.
21 * c. Set the following values in your .htconfig.php file
22 * $a->config['facebook']['appid'] = 'xxxxxxxxxxx';
23 * $a->config['facebook']['appsecret'] = 'xxxxxxxxxxxxxxx';
24 * Replace with the settings Facebook gives you.
25 * d. Navigate to Set Web->Site URL & Domain -> Website Settings. Set
26 * Site URL to yoursubdomain.yourdomain.com. Set Site Domain to your
28 * 2. (This step is now obsolete. Enable the plugin via the Admin panel.)
29 * Enable the facebook plugin by including it in .htconfig.php - e.g.
30 * $a->config['system']['addon'] = 'plugin1,plugin2,facebook';
31 * 3. Visit the Facebook Settings section of the "Settings->Plugin Settings" page.
32 * and click 'Install Facebook Connector'.
33 * 4. This will ask you to login to Facebook and grant permission to the
34 * plugin to do its stuff. Allow it to do so.
35 * 5. Optional step: If you want to use Facebook Real Time Updates (so new messages
36 * and new contacts are added ~1min after they are postet / added on FB), go to
37 * Settings -> plugins -> facebook and press the "Activate Real-Time Updates"-button.
38 * 6. You're done. To turn it off visit the Plugin Settings page again and
39 * 'Remove Facebook posting'.
41 * Vidoes and embeds will not be posted if there is no other content. Links
42 * and images will be converted to a format suitable for the Facebook API and
43 * long posts truncated - with a link to view the full post.
45 * Facebook contacts will not be able to view private photos, as they are not able to
46 * authenticate to your site to establish identity. We will address this
47 * in a future release.
51 * - Implement a method for the administrator to delete all configuration data the plugin has created,
52 * e.g. the app_access_token
53 * - Implement a configuration option to set the polling interval system-wide
56 define('FACEBOOK_MAXPOSTLEN', 420);
59 function facebook_install() {
60 register_hook('post_local', 'addon/facebook/facebook.php', 'facebook_post_local');
61 register_hook('notifier_normal', 'addon/facebook/facebook.php', 'facebook_post_hook');
62 register_hook('jot_networks', 'addon/facebook/facebook.php', 'facebook_jot_nets');
63 register_hook('connector_settings', 'addon/facebook/facebook.php', 'facebook_plugin_settings');
64 register_hook('cron', 'addon/facebook/facebook.php', 'facebook_cron');
65 register_hook('enotify', 'addon/facebook/facebook.php', 'facebook_enotify');
66 register_hook('queue_predeliver', 'addon/facebook/facebook.php', 'fb_queue_hook');
70 function facebook_uninstall() {
71 unregister_hook('post_local', 'addon/facebook/facebook.php', 'facebook_post_local');
72 unregister_hook('notifier_normal', 'addon/facebook/facebook.php', 'facebook_post_hook');
73 unregister_hook('jot_networks', 'addon/facebook/facebook.php', 'facebook_jot_nets');
74 unregister_hook('connector_settings', 'addon/facebook/facebook.php', 'facebook_plugin_settings');
75 unregister_hook('cron', 'addon/facebook/facebook.php', 'facebook_cron');
76 unregister_hook('enotify', 'addon/facebook/facebook.php', 'facebook_enotify');
77 unregister_hook('queue_predeliver', 'addon/facebook/facebook.php', 'fb_queue_hook');
80 unregister_hook('post_local_end', 'addon/facebook/facebook.php', 'facebook_post_hook');
81 unregister_hook('plugin_settings', 'addon/facebook/facebook.php', 'facebook_plugin_settings');
85 /* declare the facebook_module function so that /facebook url requests will land here */
87 function facebook_module() {}
91 // If a->argv[1] is a nickname, this is a callback from Facebook oauth requests.
92 // If $_REQUEST["realtime_cb"] is set, this is a callback from the Real-Time Updates API
94 function facebook_init(&$a) {
96 if (x($_REQUEST, "realtime_cb") && x($_REQUEST, "realtime_cb")) {
97 logger("facebook_init: Facebook Real-Time callback called", LOGGER_DEBUG);
99 if (x($_REQUEST, "hub_verify_token")) {
100 // this is the verification callback while registering for real time updates
102 $verify_token = get_config('facebook', 'cb_verify_token');
103 if ($verify_token != $_REQUEST["hub_verify_token"]) {
104 logger('facebook_init: Wrong Facebook Callback Verifier - expected ' . $verify_token . ', got ' . $_REQUEST["hub_verify_token"]);
108 if (x($_REQUEST, "hub_challenge")) {
109 logger('facebook_init: Answering Challenge: ' . $_REQUEST["hub_challenge"], LOGGER_DATA);
110 echo $_REQUEST["hub_challenge"];
115 require_once('include/items.php');
117 // this is a status update
118 $content = file_get_contents("php://input");
119 if (is_numeric($content)) $content = file_get_contents("php://input");
120 $js = json_decode($content);
121 logger(print_r($js, true), LOGGER_DATA);
123 if (!isset($js->object) || $js->object != "user" || !isset($js->entry)) {
124 logger('facebook_init: Could not parse Real-Time Update data', LOGGER_DEBUG);
128 $affected_users = array("feed" => array(), "friends" => array());
130 foreach ($js->entry as $entry) {
131 $fbuser = $entry->uid;
132 foreach ($entry->changed_fields as $field) {
133 if (!isset($affected_users[$field])) {
134 logger('facebook_init: Unknown field "' . $field . '"');
137 if (in_array($fbuser, $affected_users[$field])) continue;
139 $r = q("SELECT `uid` FROM `pconfig` WHERE `cat` = 'facebook' AND `k` = 'self_id' AND `v` = '%s' LIMIT 1", dbesc($fbuser));
144 $access_token = get_pconfig($uid,'facebook','access_token');
150 logger('facebook_init: FB-User ' . $fbuser . ' / feed', LOGGER_DEBUG);
152 if(! get_pconfig($uid,'facebook','no_wall')) {
153 $private_wall = intval(get_pconfig($uid,'facebook','private_wall'));
154 $s = fetch_url('https://graph.facebook.com/me/feed?access_token=' . $access_token);
156 $j = json_decode($s);
157 if (isset($j->data)) {
158 logger('facebook_init: wall: ' . print_r($j,true), LOGGER_DATA);
159 fb_consume_stream($uid,$j,($private_wall) ? false : true);
161 logger('facebook_init: wall: got no data from Facebook: ' . print_r($j,true), LOGGER_NORMAL);
168 logger('facebook_init: FB-User ' . $fbuser . ' / friends', LOGGER_DEBUG);
170 fb_get_friends($uid, false);
171 set_pconfig($uid,'facebook','friend_check',time());
174 logger('facebook_init: Unknown callback field for ' . $fbuser, LOGGER_NORMAL);
176 $affected_users[$field][] = $fbuser;
186 $r = q("SELECT `uid` FROM `user` WHERE `nickname` = '%s' LIMIT 1",
193 $auth_code = (x($_GET, 'code') ? $_GET['code'] : '');
194 $error = (x($_GET, 'error_description') ? $_GET['error_description'] : '');
198 logger('facebook_init: Error: ' . $error);
200 if($auth_code && $uid) {
202 $appid = get_config('facebook','appid');
203 $appsecret = get_config('facebook', 'appsecret');
205 $x = fetch_url('https://graph.facebook.com/oauth/access_token?client_id='
206 . $appid . '&client_secret=' . $appsecret . '&redirect_uri='
207 . urlencode($a->get_baseurl() . '/facebook/' . $nick)
208 . '&code=' . $auth_code);
210 logger('facebook_init: returned access token: ' . $x, LOGGER_DATA);
212 if(strpos($x,'access_token=') !== false) {
213 $token = str_replace('access_token=', '', $x);
214 if(strpos($token,'&') !== false)
215 $token = substr($token,0,strpos($token,'&'));
216 set_pconfig($uid,'facebook','access_token',$token);
217 set_pconfig($uid,'facebook','post','1');
218 if(get_pconfig($uid,'facebook','no_linking') === false)
219 set_pconfig($uid,'facebook','no_linking',1);
221 fb_get_friends($uid, true);
222 fb_consume_all($uid);
231 function fb_get_self($uid) {
232 $access_token = get_pconfig($uid,'facebook','access_token');
235 $s = fetch_url('https://graph.facebook.com/me/?access_token=' . $access_token);
237 $j = json_decode($s);
238 set_pconfig($uid,'facebook','self_id',(string) $j->id);
242 function fb_get_friends_sync_new($uid, $access_token, $person) {
243 $link = 'http://facebook.com/profile.php?id=' . $person->id;
245 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `url` = '%s' LIMIT 1",
250 if (count($r) == 0) {
251 logger('fb_get_friends: new contact found: ' . $link, LOGGER_DEBUG);
253 fb_get_friends_sync_full($uid, $access_token, $person);
257 function fb_get_friends_sync_full($uid, $access_token, $person) {
258 $s = fetch_url('https://graph.facebook.com/' . $person->id . '?access_token=' . $access_token);
260 $jp = json_decode($s);
261 logger('fb_get_friends: info: ' . print_r($jp,true), LOGGER_DATA);
263 // always use numeric link for consistency
265 $jp->link = 'http://facebook.com/profile.php?id=' . $person->id;
267 // check if we already have a contact
269 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `url` = '%s' LIMIT 1",
276 // check that we have all the photos, this has been known to fail on occasion
278 if((! $r[0]['photo']) || (! $r[0]['thumb']) || (! $r[0]['micro'])) {
279 require_once("Photo.php");
281 $photos = import_profile_photo('https://graph.facebook.com/' . $jp->id . '/picture', $uid, $r[0]['id']);
283 $r = q("UPDATE `contact` SET `photo` = '%s',
289 WHERE `id` = %d LIMIT 1
294 dbesc(datetime_convert()),
295 dbesc(datetime_convert()),
296 dbesc(datetime_convert()),
304 // create contact record
305 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `nurl`, `addr`, `alias`, `notify`, `poll`,
306 `name`, `nick`, `photo`, `network`, `rel`, `priority`,
307 `writable`, `blocked`, `readonly`, `pending` )
308 VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, %d, 0, 0, 0 ) ",
310 dbesc(datetime_convert()),
312 dbesc(normalise_link($jp->link)),
316 dbesc('facebook ' . $jp->id),
318 dbesc(($jp->nickname) ? $jp->nickname : strtolower($jp->first_name)),
319 dbesc('https://graph.facebook.com/' . $jp->id . '/picture'),
320 dbesc(NETWORK_FACEBOOK),
321 intval(CONTACT_IS_FRIEND),
327 $r = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `uid` = %d LIMIT 1",
337 $contact_id = $r[0]['id'];
339 require_once("Photo.php");
341 $photos = import_profile_photo($r[0]['photo'],$uid,$contact_id);
343 $r = q("UPDATE `contact` SET `photo` = '%s',
349 WHERE `id` = %d LIMIT 1
354 dbesc(datetime_convert()),
355 dbesc(datetime_convert()),
356 dbesc(datetime_convert()),
363 // if $fullsync is true, only new contacts are searched for
365 function fb_get_friends($uid, $fullsync = true) {
367 $r = q("SELECT `uid` FROM `user` WHERE `uid` = %d AND `account_expired` = 0 LIMIT 1",
373 $access_token = get_pconfig($uid,'facebook','access_token');
375 $no_linking = get_pconfig($uid,'facebook','no_linking');
381 $s = fetch_url('https://graph.facebook.com/me/friends?access_token=' . $access_token);
383 logger('facebook: fb_get_friends: ' . $s, LOGGER_DATA);
384 $j = json_decode($s);
385 logger('facebook: fb_get_friends: json: ' . print_r($j,true), LOGGER_DATA);
388 foreach($j->data as $person)
390 fb_get_friends_sync_full($uid, $access_token, $person);
392 fb_get_friends_sync_new($uid, $access_token, $person);
396 // This is the POST method to the facebook settings page
397 // Content is posted to Facebook in the function facebook_post_hook()
399 function facebook_post(&$a) {
404 $value = ((x($_POST,'post_by_default')) ? intval($_POST['post_by_default']) : 0);
405 set_pconfig($uid,'facebook','post_by_default', $value);
407 $no_linking = get_pconfig($uid,'facebook','no_linking');
409 $no_wall = ((x($_POST,'facebook_no_wall')) ? intval($_POST['facebook_no_wall']) : 0);
410 set_pconfig($uid,'facebook','no_wall',$no_wall);
412 $private_wall = ((x($_POST,'facebook_private_wall')) ? intval($_POST['facebook_private_wall']) : 0);
413 set_pconfig($uid,'facebook','private_wall',$private_wall);
416 set_pconfig($uid,'facebook','blocked_apps',escape_tags(trim($_POST['blocked_apps'])));
418 $linkvalue = ((x($_POST,'facebook_linking')) ? intval($_POST['facebook_linking']) : 0);
419 set_pconfig($uid,'facebook','no_linking', (($linkvalue) ? 0 : 1));
421 // FB linkage was allowed but has just been turned off - remove all FB contacts and posts
423 if((! intval($no_linking)) && (! intval($linkvalue))) {
424 $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `network` = '%s' ",
426 dbesc(NETWORK_FACEBOOK)
429 require_once('include/Contact.php');
431 contact_remove($rr['id']);
434 elseif(intval($no_linking) && intval($linkvalue)) {
435 // FB linkage is now allowed - import stuff.
437 fb_get_friends($uid, true);
438 fb_consume_all($uid);
441 info( t('Settings updated.') . EOL);
447 // Facebook settings form
449 function facebook_content(&$a) {
452 notice( t('Permission denied.') . EOL);
456 if($a->argc > 1 && $a->argv[1] === 'remove') {
457 del_pconfig(local_user(),'facebook','post');
458 info( t('Facebook disabled') . EOL);
461 if($a->argc > 1 && $a->argv[1] === 'friends') {
462 fb_get_friends(local_user(), true);
463 info( t('Updating contacts') . EOL);
467 $fb_installed = get_pconfig(local_user(),'facebook','post');
469 $appid = get_config('facebook','appid');
472 notice( t('Facebook API key is missing.') . EOL);
476 $a->page['htmlhead'] .= '<link rel="stylesheet" type="text/css" href="'
477 . $a->get_baseurl() . '/addon/facebook/facebook.css' . '" media="all" />' . "\r\n";
479 $o .= '<h3>' . t('Facebook Connect') . '</h3>';
481 if(! $fb_installed) {
482 $o .= '<div id="facebook-enable-wrapper">';
484 $o .= '<a href="https://www.facebook.com/dialog/oauth?client_id=' . $appid . '&redirect_uri='
485 . $a->get_baseurl() . '/facebook/' . $a->user['nickname'] . '&scope=publish_stream,read_stream,offline_access">' . t('Install Facebook connector for this account.') . '</a>';
490 $o .= '<div id="facebook-disable-wrapper">';
492 $o .= '<a href="' . $a->get_baseurl() . '/facebook/remove' . '">' . t('Remove Facebook connector') . '</a></div>';
494 $o .= '<div id="facebook-enable-wrapper">';
496 $o .= '<a href="https://www.facebook.com/dialog/oauth?client_id=' . $appid . '&redirect_uri='
497 . $a->get_baseurl() . '/facebook/' . $a->user['nickname'] . '&scope=publish_stream,read_stream,offline_access">' . t('Re-authenticate [This is necessary whenever your Facebook password is changed.]') . '</a>';
500 $o .= '<div id="facebook-post-default-form">';
501 $o .= '<form action="facebook" method="post" >';
502 $post_by_default = get_pconfig(local_user(),'facebook','post_by_default');
503 $checked = (($post_by_default) ? ' checked="checked" ' : '');
504 $o .= '<input type="checkbox" name="post_by_default" value="1"' . $checked . '/>' . ' ' . t('Post to Facebook by default') . EOL;
506 $no_linking = get_pconfig(local_user(),'facebook','no_linking');
507 $checked = (($no_linking) ? '' : ' checked="checked" ');
508 $o .= '<input type="checkbox" name="facebook_linking" value="1"' . $checked . '/>' . ' ' . t('Link all your Facebook friends and conversations on this website') . EOL ;
510 $o .= '<p>' . t('Facebook conversations consist of your <em>profile wall</em> and your friend <em>stream</em>.');
511 $o .= ' ' . t('On this website, your Facebook friend stream is only visible to you.');
512 $o .= ' ' . t('The following settings determine the privacy of your Facebook profile wall on this website.') . '</p>';
514 $private_wall = get_pconfig(local_user(),'facebook','private_wall');
515 $checked = (($private_wall) ? ' checked="checked" ' : '');
516 $o .= '<input type="checkbox" name="facebook_private_wall" value="1"' . $checked . '/>' . ' ' . t('On this website your Facebook profile wall conversations will only be visible to you') . EOL ;
519 $no_wall = get_pconfig(local_user(),'facebook','no_wall');
520 $checked = (($no_wall) ? ' checked="checked" ' : '');
521 $o .= '<input type="checkbox" name="facebook_no_wall" value="1"' . $checked . '/>' . ' ' . t('Do not import your Facebook profile wall conversations') . EOL ;
523 $o .= '<p>' . t('If you choose to link conversations and leave both of these boxes unchecked, your Facebook profile wall will be merged with your profile wall on this website and your privacy settings on this website will be used to determine who may see the conversations.') . '</p>';
526 $blocked_apps = get_pconfig(local_user(),'facebook','blocked_apps');
528 $o .= '<div><label id="blocked-apps-label" for="blocked-apps">' . t('Comma separated applications to ignore') . ' </label></div>';
529 $o .= '<div><textarea id="blocked-apps" name="blocked_apps" >' . htmlspecialchars($blocked_apps) . '</textarea></div>';
531 $o .= '<input type="submit" name="submit" value="' . t('Submit') . '" /></form></div>';
539 function facebook_cron($a,$b) {
541 $last = get_config('facebook','last_poll');
543 $poll_interval = intval(get_config('facebook','poll_interval'));
545 $poll_interval = 3600;
548 $next = $last + $poll_interval;
553 logger('facebook_cron');
556 // Find the FB users on this site and randomize in case one of them
557 // uses an obscene amount of memory. It may kill this queue run
558 // but hopefully we'll get a few others through on each run.
560 $r = q("SELECT * FROM `pconfig` WHERE `cat` = 'facebook' AND `k` = 'post' AND `v` = '1' ORDER BY RAND() ");
563 if(get_pconfig($rr['uid'],'facebook','no_linking'))
565 $ab = intval(get_config('system','account_abandon_days'));
567 $z = q("SELECT `uid` FROM `user` WHERE `uid` = %d AND `login_date` > UTC_TIMESTAMP() - INTERVAL %d DAY LIMIT 1",
575 // check for new friends once a day
576 $last_friend_check = get_pconfig($rr['uid'],'facebook','friend_check');
577 if($last_friend_check)
578 $next_friend_check = $last_friend_check + 86400;
579 if($next_friend_check <= time()) {
580 fb_get_friends($rr['uid'], true);
581 set_pconfig($rr['uid'],'facebook','friend_check',time());
583 fb_consume_all($rr['uid']);
587 if (get_config('facebook', 'realtime_active') == 1) {
588 if (!facebook_check_realtime_active()) {
590 logger('facebook_cron: Facebook is not sending Real-Time Updates any more, although it is supposed to. Trying to fix it...', LOGGER_NORMAL);
591 facebook_subscription_add_users();
593 if (facebook_check_realtime_active())
594 logger('facebook_cron: Successful', LOGGER_NORMAL);
596 logger('facebook_cron: Failed', LOGGER_NORMAL);
598 if(strlen($a->config['admin_email']) && !get_config('facebook', 'realtime_err_mailsent')) {
599 $res = mail($a->config['admin_email'], t('Problems with Facebook Real-Time Updates'),
600 "Hi!\n\nThere's a problem with the Facebook Real-Time Updates that cannot be solved automatically. Maybe an permission issue?\n\nThis e-mail will only be sent once.",
601 'From: ' . t('Administrator') . '@' . $_SERVER['SERVER_NAME'] . "\n"
602 . 'Content-type: text/plain; charset=UTF-8' . "\n"
603 . 'Content-transfer-encoding: 8bit'
606 set_config('facebook', 'realtime_err_mailsent', 1);
609 } else { // !facebook_check_realtime_active()
610 del_config('facebook', 'realtime_err_mailsent');
614 set_config('facebook','last_poll', time());
620 function facebook_plugin_settings(&$a,&$b) {
622 $b .= '<div class="settings-block">';
623 $b .= '<h3>' . t('Facebook') . '</h3>';
624 $b .= '<a href="facebook">' . t('Facebook Connector Settings') . '</a><br />';
630 function facebook_plugin_admin(&$a, &$o){
632 $activated = facebook_check_realtime_active();
634 $o = t('Real-Time Updates are activated.') . '<br><br>';
635 $o .= '<input type="submit" name="real_time_deactivate" value="' . t('Deactivate Real-Time Updates') . '">';
637 $o = t('Real-Time Updates not activated.') . '<br><input type="submit" name="real_time_activate" value="' . t('Activate Real-Time Updates') . '">';
641 function facebook_plugin_admin_post(&$a, &$o){
642 if (x($_REQUEST,'real_time_activate')) {
643 facebook_subscription_add_users();
645 if (x($_REQUEST,'real_time_deactivate')) {
646 facebook_subscription_del_users();
650 function facebook_jot_nets(&$a,&$b) {
654 $fb_post = get_pconfig(local_user(),'facebook','post');
655 if(intval($fb_post) == 1) {
656 $fb_defpost = get_pconfig(local_user(),'facebook','post_by_default');
657 $selected = ((intval($fb_defpost) == 1) ? ' checked="checked" ' : '');
658 $b .= '<div class="profile-jot-net"><input type="checkbox" name="facebook_enable"' . $selected . ' value="1" /> '
659 . t('Post to Facebook') . '</div>';
664 function facebook_post_hook(&$a,&$b) {
667 if($b['deleted'] || ($b['created'] !== $b['edited']))
671 * Post to Facebook stream
674 require_once('include/group.php');
676 logger('Facebook post');
681 $toplevel = (($b['id'] == $b['parent']) ? true : false);
684 $linking = ((get_pconfig($b['uid'],'facebook','no_linking')) ? 0 : 1);
686 if((! $toplevel) && ($linking)) {
687 $r = q("SELECT * FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
688 intval($b['parent']),
691 if(count($r) && substr($r[0]['uri'],0,4) === 'fb::')
692 $reply = substr($r[0]['uri'],4);
693 elseif(count($r) && substr($r[0]['extid'],0,4) === 'fb::')
694 $reply = substr($r[0]['extid'],4);
698 $u = q("SELECT * FROM user where uid = %d limit 1",
704 // only accept comments from the item owner. Other contacts are unknown to FB.
706 if(! link_compare($b['author-link'], $a->get_baseurl() . '/profile/' . $u[0]['nickname']))
710 logger('facebook reply id=' . $reply);
713 if(strstr($b['postopts'],'facebook') || ($b['private']) || ($reply)) {
715 if($b['private'] && $reply === false) {
716 $allow_people = expand_acl($b['allow_cid']);
717 $allow_groups = expand_groups(expand_acl($b['allow_gid']));
718 $deny_people = expand_acl($b['deny_cid']);
719 $deny_groups = expand_groups(expand_acl($b['deny_gid']));
721 $recipients = array_unique(array_merge($allow_people,$allow_groups));
722 $deny = array_unique(array_merge($deny_people,$deny_groups));
724 $allow_str = dbesc(implode(', ',$recipients));
726 $r = q("SELECT `notify` FROM `contact` WHERE `id` IN ( $allow_str ) AND `network` = 'face'");
727 $allow_arr = array();
730 $allow_arr[] = $rr['notify'];
733 $deny_str = dbesc(implode(', ',$deny));
735 $r = q("SELECT `notify` FROM `contact` WHERE `id` IN ( $deny_str ) AND `network` = 'face'");
739 $deny_arr[] = $rr['notify'];
742 if(count($deny_arr) && (! count($allow_arr))) {
744 // One or more FB folks were denied access but nobody on FB was specifically allowed access.
745 // This might cause the post to be open to public on Facebook, but only to selected members
746 // on another network. Since this could potentially leak a post to somebody who was denied,
747 // we will skip posting it to Facebook with a slightly vague but relevant message that will
748 // hopefully lead somebody to this code comment for a better explanation of what went wrong.
750 notice( t('Post to Facebook cancelled because of multi-network access permission conflict.') . EOL);
755 // if it's a private message but no Facebook members are allowed or denied, skip Facebook post
757 if((! count($allow_arr)) && (! count($deny_arr)))
761 if($b['verb'] == ACTIVITY_LIKE)
765 $appid = get_config('facebook', 'appid' );
766 $secret = get_config('facebook', 'appsecret' );
768 if($appid && $secret) {
770 logger('facebook: have appid+secret');
772 $fb_token = get_pconfig($b['uid'],'facebook','access_token');
775 // post to facebook if it's a public post and we've ticked the 'post to Facebook' box,
776 // or it's a private message with facebook participants
777 // or it's a reply or likes action to an existing facebook post
779 if($fb_token && ($toplevel || $b['private'] || $reply)) {
780 logger('facebook: able to post');
781 require_once('library/facebook.php');
782 require_once('include/bbcode.php');
786 logger('Facebook post: original msg=' . $msg, LOGGER_DATA);
788 // make links readable before we strip the code
790 // unless it's a dislike - just send the text as a comment
792 if($b['verb'] == ACTIVITY_DISLIKE)
793 $msg = trim(strip_tags(bbcode($msg)));
795 $search_str = $a->get_baseurl() . '/search';
797 if(preg_match("/\[url=(.*?)\](.*?)\[\/url\]/is",$msg,$matches)) {
799 // don't use hashtags for message link
801 if(strpos($matches[2],$search_str) === false) {
803 if(substr($matches[2],0,5) != '[img]')
804 $linkname = $matches[2];
808 // strip tag links to avoid link clutter, this really should be
809 // configurable because we're losing information
811 $msg = preg_replace("/\#\[url=(.*?)\](.*?)\[\/url\]/is",'#$2',$msg);
813 // provide the link separately for normal links
814 $msg = preg_replace("/\[url=(.*?)\](.*?)\[\/url\]/is",'$2 $1',$msg);
816 if(preg_match("/\[img\](.*?)\[\/img\]/is",$msg,$matches))
817 $image = $matches[1];
819 $msg = preg_replace("/\[img\](.*?)\[\/img\]/is", t('Image: ') . '$1', $msg);
821 if((strpos($link,z_root()) !== false) && (! $image))
822 $image = $a->get_baseurl() . '/images/friendica-64.jpg';
824 $msg = trim(strip_tags(bbcode($msg)));
825 $msg = html_entity_decode($msg,ENT_QUOTES,'UTF-8');
827 // add any attachments as text urls
829 $arr = explode(',',$b['attach']);
833 foreach($arr as $r) {
835 $cnt = preg_match('|\[attach\]href=\"(.*?)\" size=\"(.*?)\" type=\"(.*?)\" title=\"(.*?)\"\[\/attach\]|',$r,$matches);
842 if (strlen($msg) > FACEBOOK_MAXPOSTLEN) {
844 require_once('library/slinky.php');
846 $display_url = $b['plink'];
848 $slinky = new Slinky( $display_url );
849 // setup a cascade of shortening services
850 // try to get a short link from these services
851 // in the order ur1.ca, trim, id.gd, tinyurl
852 $slinky->set_cascade( array( new Slinky_UR1ca(), new Slinky_Trim(), new Slinky_IsGd(), new Slinky_TinyURL() ) );
853 $shortlink = $slinky->short();
854 // the new message will be shortened such that "... $shortlink"
855 // will fit into the character limit
856 $msg = substr($msg, 0, FACEBOOK_MAXPOSTLEN - strlen($shortlink) - 4);
857 $msg .= '... ' . $shortlink;
862 logger('Facebook post: msg=' . $msg, LOGGER_DATA);
865 $postvars = array('access_token' => $fb_token);
869 'access_token' => $fb_token,
873 $postvars['picture'] = $image;
875 $postvars['link'] = $link;
877 $postvars['name'] = $linkname;
880 if(($b['private']) && ($toplevel)) {
881 $postvars['privacy'] = '{"value": "CUSTOM", "friends": "SOME_FRIENDS"';
882 if(count($allow_arr))
883 $postvars['privacy'] .= ',"allow": "' . implode(',',$allow_arr) . '"';
885 $postvars['privacy'] .= ',"deny": "' . implode(',',$deny_arr) . '"';
886 $postvars['privacy'] .= '}';
891 $url = 'https://graph.facebook.com/' . $reply . '/' . (($likes) ? 'likes' : 'comments');
894 $url = 'https://graph.facebook.com/me/feed';
896 $postvars['actions'] = '{"name": "' . t('View on Friendica') . '", "link": "' . $b['plink'] . '"}';
899 logger('facebook: post to ' . $url);
900 logger('facebook: postvars: ' . print_r($postvars,true));
902 // "test_mode" prevents anything from actually being posted.
903 // Otherwise, let's do it.
905 if(! get_config('facebook','test_mode')) {
906 $x = post_url($url, $postvars);
908 $retj = json_decode($x);
910 q("UPDATE `item` SET `extid` = '%s' WHERE `id` = %d LIMIT 1",
911 dbesc('fb::' . $retj->id),
914 del_pconfig($b['uid'], 'facebook', 'session_expired_mailsent');
918 $s = serialize(array('url' => $url, 'item' => $b['id'], 'post' => $postvars));
919 require_once('include/queue_fn.php');
920 add_to_queue($a->contact,NETWORK_FACEBOOK,$s);
921 notice( t('Facebook post failed. Queued for retry.') . EOL);
924 if (isset($retj->error) && $retj->error->type == "OAuthException" && $retj->error->code == 190) {
925 logger('Facebook session has expired due to changed password.', LOGGER_DEBUG);
926 if (!get_pconfig($b['uid'], 'facebook', 'session_expired_mailsent')) {
927 require_once('include/enotify.php');
929 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1", intval($b['uid']) );
932 'type' => NOTIFY_SYSTEM,
933 'system_type' => 'facebook_connection_invalid',
934 'language' => $r[0]['language'],
935 'to_name' => $r[0]['username'],
936 'to_email' => $r[0]['email'],
939 set_pconfig($b['uid'], 'facebook', 'session_expired_mailsent', '1');
944 logger('Facebook post returns: ' . $x, LOGGER_DEBUG);
951 function facebook_enotify(&$app, &$data) {
952 if (x($data, 'params') && $data['params']['type'] == NOTIFY_SYSTEM && x($data['params'], 'system_type') && $data['params']['system_type'] == 'facebook_connection_invalid') {
953 $data['itemlink'] = '/facebook';
954 $data['epreamble'] = $data['preamble'] = t('Your Facebook connection became invalid. Please Re-authenticate.');
955 $data['subject'] = t('Facebook connection became invalid');
959 function facebook_post_local(&$a,&$b) {
961 // Figure out if Facebook posting is enabled for this post and file it in 'postopts'
962 // where we will discover it during background delivery.
964 // This can only be triggered by a local user posting to their own wall.
966 if((local_user()) && (local_user() == $b['uid'])) {
968 $fb_post = intval(get_pconfig(local_user(),'facebook','post'));
969 $fb_enable = (($fb_post && x($_REQUEST,'facebook_enable')) ? intval($_REQUEST['facebook_enable']) : 0);
971 // if API is used, default to the chosen settings
972 if($_REQUEST['api_source'] && intval(get_pconfig(local_user(),'facebook','post_by_default')))
978 if(strlen($b['postopts']))
979 $b['postopts'] .= ',';
980 $b['postopts'] .= 'facebook';
985 function fb_queue_hook(&$a,&$b) {
987 $qi = q("SELECT * FROM `queue` WHERE `network` = '%s'",
988 dbesc(NETWORK_FACEBOOK)
993 require_once('include/queue_fn.php');
996 if($x['network'] !== NETWORK_FACEBOOK)
999 logger('facebook_queue: run');
1001 $r = q("SELECT `user`.* FROM `user` LEFT JOIN `contact` on `contact`.`uid` = `user`.`uid`
1002 WHERE `contact`.`self` = 1 AND `contact`.`id` = %d LIMIT 1",
1010 $appid = get_config('facebook', 'appid' );
1011 $secret = get_config('facebook', 'appsecret' );
1013 if($appid && $secret) {
1014 $fb_post = intval(get_pconfig($user['uid'],'facebook','post'));
1015 $fb_token = get_pconfig($user['uid'],'facebook','access_token');
1017 if($fb_post && $fb_token) {
1018 logger('facebook_queue: able to post');
1019 require_once('library/facebook.php');
1021 $z = unserialize($x['content']);
1023 $j = post_url($z['url'],$z['post']);
1025 $retj = json_decode($j);
1027 q("UPDATE `item` SET `extid` = '%s' WHERE `id` = %d LIMIT 1",
1028 dbesc('fb::' . $retj->id),
1031 logger('facebook_queue: success: ' . $j);
1032 remove_queue_item($x['id']);
1035 logger('facebook_queue: failed: ' . $j);
1036 update_queue_time($x['id']);
1043 function fb_consume_all($uid) {
1045 require_once('include/items.php');
1047 $access_token = get_pconfig($uid,'facebook','access_token');
1051 if(! get_pconfig($uid,'facebook','no_wall')) {
1052 $private_wall = intval(get_pconfig($uid,'facebook','private_wall'));
1053 $s = fetch_url('https://graph.facebook.com/me/feed?access_token=' . $access_token);
1055 $j = json_decode($s);
1056 if (isset($j->data)) {
1057 logger('fb_consume_stream: wall: ' . print_r($j,true), LOGGER_DATA);
1058 fb_consume_stream($uid,$j,($private_wall) ? false : true);
1060 logger('fb_consume_stream: wall: got no data from Facebook: ' . print_r($j,true), LOGGER_NORMAL);
1064 $s = fetch_url('https://graph.facebook.com/me/home?access_token=' . $access_token);
1066 $j = json_decode($s);
1067 if (isset($j->data)) {
1068 logger('fb_consume_stream: feed: ' . print_r($j,true), LOGGER_DATA);
1069 fb_consume_stream($uid,$j,false);
1071 logger('fb_consume_stream: feed: got no data from Facebook: ' . print_r($j,true), LOGGER_NORMAL);
1077 function fb_get_photo($uid,$link) {
1078 $access_token = get_pconfig($uid,'facebook','access_token');
1079 if(! $access_token || (! stristr($link,'facebook.com/photo.php')))
1080 return "\n" . '[url=' . $link . ']' . t('link') . '[/url]';
1081 $ret = preg_match('/fbid=([0-9]*)/',$link,$match);
1083 $photo_id = $match[1];
1084 $x = fetch_url('https://graph.facebook.com/' . $photo_id . '?access_token=' . $access_token);
1085 $j = json_decode($x);
1087 return "\n\n" . '[url=' . $link . '][img]' . $j->picture . '[/img][/url]';
1089 return "\n" . '[url=' . $link . ']' . t('link') . '[/url]';
1092 function fb_consume_stream($uid,$j,$wall = false) {
1097 $user = q("SELECT * FROM `user` WHERE `uid` = %d AND `account_expired` = 0 LIMIT 1",
1103 $my_local_url = $a->get_baseurl() . '/profile/' . $user[0]['nickname'];
1105 $no_linking = get_pconfig($uid,'facebook','no_linking');
1109 $self = q("SELECT * FROM `contact` WHERE `self` = 1 AND `uid` = %d LIMIT 1",
1113 $blocked_apps = get_pconfig($uid,'facebook','blocked_apps');
1114 $blocked_apps_arr = explode(',',$blocked_apps);
1116 $self_id = get_pconfig($uid,'facebook','self_id');
1117 if(! count($j->data) || (! strlen($self_id)))
1120 foreach($j->data as $entry) {
1121 logger('fb_consume: entry: ' . print_r($entry,true), LOGGER_DATA);
1122 $datarray = array();
1124 $r = q("SELECT * FROM `item` WHERE ( `uri` = '%s' OR `extid` = '%s') AND `uid` = %d LIMIT 1",
1125 dbesc('fb::' . $entry->id),
1126 dbesc('fb::' . $entry->id),
1130 $post_exists = true;
1132 $top_item = $r[0]['id'];
1135 $post_exists = false;
1140 $datarray['gravity'] = 0;
1141 $datarray['uid'] = $uid;
1142 $datarray['wall'] = (($wall) ? 1 : 0);
1143 $datarray['uri'] = $datarray['parent-uri'] = 'fb::' . $entry->id;
1144 $from = $entry->from;
1145 if($from->id == $self_id)
1146 $datarray['contact-id'] = $self[0]['id'];
1148 $r = q("SELECT * FROM `contact` WHERE `notify` = '%s' AND `uid` = %d AND `blocked` = 0 AND `readonly` = 0 LIMIT 1",
1153 $datarray['contact-id'] = $r[0]['id'];
1156 // don't store post if we don't have a contact
1158 if(! x($datarray,'contact-id')) {
1159 logger('no contact: post ignored');
1163 $datarray['verb'] = ACTIVITY_POST;
1165 $datarray['owner-name'] = $self[0]['name'];
1166 $datarray['owner-link'] = $self[0]['url'];
1167 $datarray['owner-avatar'] = $self[0]['thumb'];
1169 if(isset($entry->application) && isset($entry->application->name) && strlen($entry->application->name))
1170 $datarray['app'] = strip_tags($entry->application->name);
1172 $datarray['app'] = 'facebook';
1174 $found_blocked = false;
1176 if(count($blocked_apps_arr)) {
1177 foreach($blocked_apps_arr as $bad_appl) {
1178 if(strlen(trim($bad_appl)) && (stristr($datarray['app'],trim($bad_appl)))) {
1179 $found_blocked = true;
1184 if($found_blocked) {
1185 logger('facebook: blocking application: ' . $datarray['app']);
1189 $datarray['author-name'] = $from->name;
1190 $datarray['author-link'] = 'http://facebook.com/profile.php?id=' . $from->id;
1191 $datarray['author-avatar'] = 'https://graph.facebook.com/' . $from->id . '/picture';
1192 $datarray['plink'] = $datarray['author-link'] . '&v=wall&story_fbid=' . substr($entry->id,strpos($entry->id,'_') + 1);
1194 $datarray['body'] = escape_tags($entry->message);
1196 if($entry->picture && $entry->link) {
1197 $datarray['body'] .= "\n\n" . '[url=' . $entry->link . '][img]' . $entry->picture . '[/img][/url]';
1201 $datarray['body'] .= "\n\n" . '[img]' . $entry->picture . '[/img]';
1202 // if just a link, it may be a wall photo - check
1204 $datarray['body'] .= fb_get_photo($uid,$entry->link);
1207 $datarray['body'] .= "\n" . $entry->name;
1209 $datarray['body'] .= "\n" . $entry->caption;
1210 if($entry->description)
1211 $datarray['body'] .= "\n" . $entry->description;
1212 $datarray['created'] = datetime_convert('UTC','UTC',$entry->created_time);
1213 $datarray['edited'] = datetime_convert('UTC','UTC',$entry->updated_time);
1215 // If the entry has a privacy policy, we cannot assume who can or cannot see it,
1216 // as the identities are from a foreign system. Mark it as private to the owner.
1218 if($entry->privacy && $entry->privacy->value !== 'EVERYONE') {
1219 $datarray['private'] = 1;
1220 $datarray['allow_cid'] = '<' . $self[0]['id'] . '>';
1223 if(trim($datarray['body']) == '') {
1224 logger('facebook: empty body');
1228 $top_item = item_store($datarray);
1229 $r = q("SELECT * FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
1235 logger('fb: new top level item posted');
1239 if(isset($entry->likes) && isset($entry->likes->data))
1240 $likers = $entry->likes->data;
1244 if(isset($entry->comments) && isset($entry->comments->data))
1245 $comments = $entry->comments->data;
1249 if(is_array($likers)) {
1250 foreach($likers as $likes) {
1255 // If we posted the like locally, it will be found with our url, not the FB url.
1257 $second_url = (($likes->id == $self_id) ? $self[0]['url'] : 'http://facebook.com/profile.php?id=' . $likes->id);
1259 $r = q("SELECT * FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `verb` = '%s'
1260 AND ( `author-link` = '%s' OR `author-link` = '%s' ) LIMIT 1",
1261 dbesc($orig_post['uri']),
1263 dbesc(ACTIVITY_LIKE),
1264 dbesc('http://facebook.com/profile.php?id=' . $likes->id),
1271 $likedata = array();
1272 $likedata['parent'] = $top_item;
1273 $likedata['verb'] = ACTIVITY_LIKE;
1274 $likedata['gravity'] = 3;
1275 $likedata['uid'] = $uid;
1276 $likedata['wall'] = (($wall) ? 1 : 0);
1277 $likedata['uri'] = item_new_uri($a->get_baseurl(), $uid);
1278 $likedata['parent-uri'] = $orig_post['uri'];
1279 if($likes->id == $self_id)
1280 $likedata['contact-id'] = $self[0]['id'];
1282 $r = q("SELECT * FROM `contact` WHERE `notify` = '%s' AND `uid` = %d AND `blocked` = 0 AND `readonly` = 0 LIMIT 1",
1287 $likedata['contact-id'] = $r[0]['id'];
1289 if(! x($likedata,'contact-id'))
1290 $likedata['contact-id'] = $orig_post['contact-id'];
1292 $likedata['app'] = 'facebook';
1293 $likedata['verb'] = ACTIVITY_LIKE;
1294 $likedata['author-name'] = $likes->name;
1295 $likedata['author-link'] = 'http://facebook.com/profile.php?id=' . $likes->id;
1296 $likedata['author-avatar'] = 'https://graph.facebook.com/' . $likes->id . '/picture';
1298 $author = '[url=' . $likedata['author-link'] . ']' . $likedata['author-name'] . '[/url]';
1299 $objauthor = '[url=' . $orig_post['author-link'] . ']' . $orig_post['author-name'] . '[/url]';
1300 $post_type = t('status');
1301 $plink = '[url=' . $orig_post['plink'] . ']' . $post_type . '[/url]';
1302 $likedata['object-type'] = ACTIVITY_OBJ_NOTE;
1304 $likedata['body'] = sprintf( t('%1$s likes %2$s\'s %3$s'), $author, $objauthor, $plink);
1305 $likedata['object'] = '<object><type>' . ACTIVITY_OBJ_NOTE . '</type><local>1</local>' .
1306 '<id>' . $orig_post['uri'] . '</id><link>' . xmlify('<link rel="alternate" type="text/html" href="' . xmlify($orig_post['plink']) . '" />') . '</link><title>' . $orig_post['title'] . '</title><content>' . $orig_post['body'] . '</content></object>';
1308 $item = item_store($likedata);
1311 if(is_array($comments)) {
1312 foreach($comments as $cmnt) {
1317 $r = q("SELECT * FROM `item` WHERE `uid` = %d AND ( `uri` = '%s' OR `extid` = '%s' ) LIMIT 1",
1319 dbesc('fb::' . $cmnt->id),
1320 dbesc('fb::' . $cmnt->id)
1325 $cmntdata = array();
1326 $cmntdata['parent'] = $top_item;
1327 $cmntdata['verb'] = ACTIVITY_POST;
1328 $cmntdata['gravity'] = 6;
1329 $cmntdata['uid'] = $uid;
1330 $cmntdata['wall'] = (($wall) ? 1 : 0);
1331 $cmntdata['uri'] = 'fb::' . $cmnt->id;
1332 $cmntdata['parent-uri'] = $orig_post['uri'];
1333 if($cmnt->from->id == $self_id) {
1334 $cmntdata['contact-id'] = $self[0]['id'];
1337 $r = q("SELECT * FROM `contact` WHERE `notify` = '%s' AND `uid` = %d LIMIT 1",
1338 dbesc($cmnt->from->id),
1342 $cmntdata['contact-id'] = $r[0]['id'];
1343 if($r[0]['blocked'] || $r[0]['readonly'])
1347 if(! x($cmntdata,'contact-id'))
1348 $cmntdata['contact-id'] = $orig_post['contact-id'];
1350 $cmntdata['app'] = 'facebook';
1351 $cmntdata['created'] = datetime_convert('UTC','UTC',$cmnt->created_time);
1352 $cmntdata['edited'] = datetime_convert('UTC','UTC',$cmnt->created_time);
1353 $cmntdata['verb'] = ACTIVITY_POST;
1354 $cmntdata['author-name'] = $cmnt->from->name;
1355 $cmntdata['author-link'] = 'http://facebook.com/profile.php?id=' . $cmnt->from->id;
1356 $cmntdata['author-avatar'] = 'https://graph.facebook.com/' . $cmnt->from->id . '/picture';
1357 $cmntdata['body'] = $cmnt->message;
1358 $item = item_store($cmntdata);
1360 $myconv = q("SELECT `author-link`, `author-avatar`, `parent` FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `parent` != 0 ",
1361 dbesc($orig_post['uri']),
1365 if(count($myconv)) {
1366 $importer_url = $a->get_baseurl() . '/profile/' . $user[0]['nickname'];
1368 foreach($myconv as $conv) {
1370 // now if we find a match, it means we're in this conversation
1372 if(! link_compare($conv['author-link'],$importer_url))
1375 require_once('include/enotify.php');
1377 $conv_parent = $conv['parent'];
1380 'type' => NOTIFY_COMMENT,
1381 'notify_flags' => $user[0]['notify-flags'],
1382 'language' => $user[0]['language'],
1383 'to_name' => $user[0]['username'],
1384 'to_email' => $user[0]['email'],
1385 'uid' => $user[0]['uid'],
1386 'item' => $cmntdata,
1387 'link' => $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $item,
1388 'source_name' => $cmntdata['author-name'],
1389 'source_link' => $cmntdata['author-link'],
1390 'source_photo' => $cmntdata['author-avatar'],
1391 'verb' => ACTIVITY_POST,
1393 'parent' => $conv_parent,
1396 // only send one notification
1406 function fb_get_app_access_token() {
1408 $acc_token = get_config('facebook','app_access_token');
1410 if ($acc_token !== false) return $acc_token;
1412 $appid = get_config('facebook','appid');
1413 $appsecret = get_config('facebook', 'appsecret');
1415 if ($appid === false || $appsecret === false) {
1416 logger('fb_get_app_access_token: appid and/or appsecret not set', LOGGER_DEBUG);
1420 $x = fetch_url('https://graph.facebook.com/oauth/access_token?client_id=' . $appid . '&client_secret=' . $appsecret . "&grant_type=client_credentials");
1422 if(strpos($x,'access_token=') !== false) {
1423 logger('fb_get_app_access_token: returned access token: ' . $x, LOGGER_DATA);
1425 $token = str_replace('access_token=', '', $x);
1426 if(strpos($token,'&') !== false)
1427 $token = substr($token,0,strpos($token,'&'));
1430 logger('fb_get_app_access_token: empty token: ' . $x, LOGGER_DEBUG);
1433 set_config('facebook','app_access_token',$token);
1436 logger('fb_get_app_access_token: response did not contain an access_token: ' . $x, LOGGER_DATA);
1441 function facebook_subscription_del_users() {
1443 $access_token = fb_get_app_access_token();
1445 $url = "https://graph.facebook.com/" . get_config('facebook', 'appid' ) . "/subscriptions?access_token=" . $access_token;
1446 facebook_delete_url($url);
1448 del_config('facebook', 'realtime_active');
1451 function facebook_subscription_add_users() {
1454 $access_token = fb_get_app_access_token();
1456 $url = "https://graph.facebook.com/" . get_config('facebook', 'appid' ) . "/subscriptions?access_token=" . $access_token;
1458 list($usec, $sec) = explode(" ", microtime());
1459 $verify_token = sha1($usec . $sec . rand(0, 999999999));
1460 set_config('facebook', 'cb_verify_token', $verify_token);
1462 $cb = $a->get_baseurl() . '/facebook/?realtime_cb=1';
1464 $j = post_url($url,array(
1466 "fields" => "feed,friends",
1467 "callback_url" => $cb,
1468 "verify_token" => $verify_token,
1470 del_config('facebook', 'cb_verify_token');
1473 logger("Facebook reponse: " . $j, LOGGER_DATA);
1475 if (facebook_check_realtime_active()) set_config('facebook', 'realtime_active', 1);
1479 function facebook_subscriptions_get() {
1481 $access_token = fb_get_app_access_token();
1482 if (!$access_token) return null;
1484 $url = "https://graph.facebook.com/" . get_config('facebook', 'appid' ) . "/subscriptions?access_token=" . $access_token;
1485 $j = fetch_url($url);
1488 $x = json_decode($j);
1489 if (isset($x->data)) $ret = $x->data;
1495 function facebook_check_realtime_active() {
1496 $ret = facebook_subscriptions_get();
1497 if (is_null($ret)) return false;
1498 if (is_array($ret)) foreach ($ret as $re) if (is_object($re) && $re->object == "user") return true;
1505 // DELETE-request to $url
1507 if(! function_exists('facebook_delete_url')) {
1508 function facebook_delete_url($url,$headers = null, &$redirects = 0, $timeout = 0) {
1510 $ch = curl_init($url);
1511 if(($redirects > 8) || (! $ch))
1514 curl_setopt($ch, CURLOPT_HEADER, true);
1515 curl_setopt($ch, CURLOPT_RETURNTRANSFER,true);
1516 curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "DELETE");
1517 curl_setopt($ch, CURLOPT_USERAGENT, "Friendica");
1519 if(intval($timeout)) {
1520 curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
1523 $curl_time = intval(get_config('system','curl_timeout'));
1524 curl_setopt($ch, CURLOPT_TIMEOUT, (($curl_time !== false) ? $curl_time : 60));
1527 if(defined('LIGHTTPD')) {
1528 if(!is_array($headers)) {
1529 $headers = array('Expect:');
1531 if(!in_array('Expect:', $headers)) {
1532 array_push($headers, 'Expect:');
1537 curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
1539 $check_cert = get_config('system','verifyssl');
1540 curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, (($check_cert) ? true : false));
1541 $prx = get_config('system','proxy');
1543 curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, 1);
1544 curl_setopt($ch, CURLOPT_PROXY, $prx);
1545 $prxusr = get_config('system','proxyuser');
1547 curl_setopt($ch, CURLOPT_PROXYUSERPWD, $prxusr);
1550 $a->set_curl_code(0);
1552 // don't let curl abort the entire application
1553 // if it throws any errors.
1555 $s = @curl_exec($ch);
1558 $curl_info = curl_getinfo($ch);
1559 $http_code = $curl_info['http_code'];
1563 // Pull out multiple headers, e.g. proxy and continuation headers
1564 // allow for HTTP/2.x without fixing code
1566 while(preg_match('/^HTTP\/[1-2].+? [1-5][0-9][0-9]/',$base)) {
1567 $chunk = substr($base,0,strpos($base,"\r\n\r\n")+4);
1569 $base = substr($base,strlen($chunk));
1572 if($http_code == 301 || $http_code == 302 || $http_code == 303) {
1574 preg_match('/(Location:|URI:)(.*?)\n/', $header, $matches);
1575 $url = trim(array_pop($matches));
1576 $url_parsed = @parse_url($url);
1577 if (isset($url_parsed)) {
1579 return delete_url($url,$headers,$redirects,$timeout);
1582 $a->set_curl_code($http_code);
1583 $body = substr($s,strlen($header));
1585 $a->set_curl_headers($header);