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);
57 define('FACEBOOK_SESSION_ERR_NOTIFICATION_INTERVAL', 259200); // 3 days
60 function facebook_install() {
61 register_hook('post_local', 'addon/facebook/facebook.php', 'facebook_post_local');
62 register_hook('notifier_normal', 'addon/facebook/facebook.php', 'facebook_post_hook');
63 register_hook('jot_networks', 'addon/facebook/facebook.php', 'facebook_jot_nets');
64 register_hook('connector_settings', 'addon/facebook/facebook.php', 'facebook_plugin_settings');
65 register_hook('cron', 'addon/facebook/facebook.php', 'facebook_cron');
66 register_hook('enotify', 'addon/facebook/facebook.php', 'facebook_enotify');
67 register_hook('queue_predeliver', 'addon/facebook/facebook.php', 'fb_queue_hook');
71 function facebook_uninstall() {
72 unregister_hook('post_local', 'addon/facebook/facebook.php', 'facebook_post_local');
73 unregister_hook('notifier_normal', 'addon/facebook/facebook.php', 'facebook_post_hook');
74 unregister_hook('jot_networks', 'addon/facebook/facebook.php', 'facebook_jot_nets');
75 unregister_hook('connector_settings', 'addon/facebook/facebook.php', 'facebook_plugin_settings');
76 unregister_hook('cron', 'addon/facebook/facebook.php', 'facebook_cron');
77 unregister_hook('enotify', 'addon/facebook/facebook.php', 'facebook_enotify');
78 unregister_hook('queue_predeliver', 'addon/facebook/facebook.php', 'fb_queue_hook');
81 unregister_hook('post_local_end', 'addon/facebook/facebook.php', 'facebook_post_hook');
82 unregister_hook('plugin_settings', 'addon/facebook/facebook.php', 'facebook_plugin_settings');
86 /* declare the facebook_module function so that /facebook url requests will land here */
88 function facebook_module() {}
92 // If a->argv[1] is a nickname, this is a callback from Facebook oauth requests.
93 // If $_REQUEST["realtime_cb"] is set, this is a callback from the Real-Time Updates API
95 function facebook_init(&$a) {
97 if (x($_REQUEST, "realtime_cb") && x($_REQUEST, "realtime_cb")) {
98 logger("facebook_init: Facebook Real-Time callback called", LOGGER_DEBUG);
100 if (x($_REQUEST, "hub_verify_token")) {
101 // this is the verification callback while registering for real time updates
103 $verify_token = get_config('facebook', 'cb_verify_token');
104 if ($verify_token != $_REQUEST["hub_verify_token"]) {
105 logger('facebook_init: Wrong Facebook Callback Verifier - expected ' . $verify_token . ', got ' . $_REQUEST["hub_verify_token"]);
109 if (x($_REQUEST, "hub_challenge")) {
110 logger('facebook_init: Answering Challenge: ' . $_REQUEST["hub_challenge"], LOGGER_DATA);
111 echo $_REQUEST["hub_challenge"];
116 require_once('include/items.php');
118 // this is a status update
119 $content = file_get_contents("php://input");
120 if (is_numeric($content)) $content = file_get_contents("php://input");
121 $js = json_decode($content);
122 logger(print_r($js, true), LOGGER_DATA);
124 if (!isset($js->object) || $js->object != "user" || !isset($js->entry)) {
125 logger('facebook_init: Could not parse Real-Time Update data', LOGGER_DEBUG);
129 $affected_users = array("feed" => array(), "friends" => array());
131 foreach ($js->entry as $entry) {
132 $fbuser = $entry->uid;
133 foreach ($entry->changed_fields as $field) {
134 if (!isset($affected_users[$field])) {
135 logger('facebook_init: Unknown field "' . $field . '"');
138 if (in_array($fbuser, $affected_users[$field])) continue;
140 $r = q("SELECT `uid` FROM `pconfig` WHERE `cat` = 'facebook' AND `k` = 'self_id' AND `v` = '%s' LIMIT 1", dbesc($fbuser));
145 $access_token = get_pconfig($uid,'facebook','access_token');
151 logger('facebook_init: FB-User ' . $fbuser . ' / feed', LOGGER_DEBUG);
153 if(! get_pconfig($uid,'facebook','no_wall')) {
154 $private_wall = intval(get_pconfig($uid,'facebook','private_wall'));
155 $s = fetch_url('https://graph.facebook.com/me/feed?access_token=' . $access_token);
157 $j = json_decode($s);
158 if (isset($j->data)) {
159 logger('facebook_init: wall: ' . print_r($j,true), LOGGER_DATA);
160 fb_consume_stream($uid,$j,($private_wall) ? false : true);
162 logger('facebook_init: wall: got no data from Facebook: ' . print_r($j,true), LOGGER_NORMAL);
169 logger('facebook_init: FB-User ' . $fbuser . ' / friends', LOGGER_DEBUG);
171 fb_get_friends($uid, false);
172 set_pconfig($uid,'facebook','friend_check',time());
175 logger('facebook_init: Unknown callback field for ' . $fbuser, LOGGER_NORMAL);
177 $affected_users[$field][] = $fbuser;
187 $r = q("SELECT `uid` FROM `user` WHERE `nickname` = '%s' LIMIT 1",
194 $auth_code = (x($_GET, 'code') ? $_GET['code'] : '');
195 $error = (x($_GET, 'error_description') ? $_GET['error_description'] : '');
199 logger('facebook_init: Error: ' . $error);
201 if($auth_code && $uid) {
203 $appid = get_config('facebook','appid');
204 $appsecret = get_config('facebook', 'appsecret');
206 $x = fetch_url('https://graph.facebook.com/oauth/access_token?client_id='
207 . $appid . '&client_secret=' . $appsecret . '&redirect_uri='
208 . urlencode($a->get_baseurl() . '/facebook/' . $nick)
209 . '&code=' . $auth_code);
211 logger('facebook_init: returned access token: ' . $x, LOGGER_DATA);
213 if(strpos($x,'access_token=') !== false) {
214 $token = str_replace('access_token=', '', $x);
215 if(strpos($token,'&') !== false)
216 $token = substr($token,0,strpos($token,'&'));
217 set_pconfig($uid,'facebook','access_token',$token);
218 set_pconfig($uid,'facebook','post','1');
219 if(get_pconfig($uid,'facebook','no_linking') === false)
220 set_pconfig($uid,'facebook','no_linking',1);
222 fb_get_friends($uid, true);
223 fb_consume_all($uid);
232 function fb_get_self($uid) {
233 $access_token = get_pconfig($uid,'facebook','access_token');
236 $s = fetch_url('https://graph.facebook.com/me/?access_token=' . $access_token);
238 $j = json_decode($s);
239 set_pconfig($uid,'facebook','self_id',(string) $j->id);
243 function fb_get_friends_sync_new($uid, $access_token, $person) {
244 $link = 'http://facebook.com/profile.php?id=' . $person->id;
246 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `url` = '%s' LIMIT 1",
251 if (count($r) == 0) {
252 logger('fb_get_friends: new contact found: ' . $link, LOGGER_DEBUG);
254 fb_get_friends_sync_full($uid, $access_token, $person);
258 function fb_get_friends_sync_full($uid, $access_token, $person) {
259 $s = fetch_url('https://graph.facebook.com/' . $person->id . '?access_token=' . $access_token);
261 $jp = json_decode($s);
262 logger('fb_get_friends: info: ' . print_r($jp,true), LOGGER_DATA);
264 // always use numeric link for consistency
266 $jp->link = 'http://facebook.com/profile.php?id=' . $person->id;
268 // check if we already have a contact
270 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `url` = '%s' LIMIT 1",
277 // check that we have all the photos, this has been known to fail on occasion
279 if((! $r[0]['photo']) || (! $r[0]['thumb']) || (! $r[0]['micro'])) {
280 require_once("Photo.php");
282 $photos = import_profile_photo('https://graph.facebook.com/' . $jp->id . '/picture', $uid, $r[0]['id']);
284 $r = q("UPDATE `contact` SET `photo` = '%s',
290 WHERE `id` = %d LIMIT 1
295 dbesc(datetime_convert()),
296 dbesc(datetime_convert()),
297 dbesc(datetime_convert()),
305 // create contact record
306 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `nurl`, `addr`, `alias`, `notify`, `poll`,
307 `name`, `nick`, `photo`, `network`, `rel`, `priority`,
308 `writable`, `blocked`, `readonly`, `pending` )
309 VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, %d, 0, 0, 0 ) ",
311 dbesc(datetime_convert()),
313 dbesc(normalise_link($jp->link)),
317 dbesc('facebook ' . $jp->id),
319 dbesc(($jp->nickname) ? $jp->nickname : strtolower($jp->first_name)),
320 dbesc('https://graph.facebook.com/' . $jp->id . '/picture'),
321 dbesc(NETWORK_FACEBOOK),
322 intval(CONTACT_IS_FRIEND),
328 $r = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `uid` = %d LIMIT 1",
338 $contact_id = $r[0]['id'];
340 require_once("Photo.php");
342 $photos = import_profile_photo($r[0]['photo'],$uid,$contact_id);
344 $r = q("UPDATE `contact` SET `photo` = '%s',
350 WHERE `id` = %d LIMIT 1
355 dbesc(datetime_convert()),
356 dbesc(datetime_convert()),
357 dbesc(datetime_convert()),
364 // if $fullsync is true, only new contacts are searched for
366 function fb_get_friends($uid, $fullsync = true) {
368 $r = q("SELECT `uid` FROM `user` WHERE `uid` = %d AND `account_expired` = 0 LIMIT 1",
374 $access_token = get_pconfig($uid,'facebook','access_token');
376 $no_linking = get_pconfig($uid,'facebook','no_linking');
382 $s = fetch_url('https://graph.facebook.com/me/friends?access_token=' . $access_token);
384 logger('facebook: fb_get_friends: ' . $s, LOGGER_DATA);
385 $j = json_decode($s);
386 logger('facebook: fb_get_friends: json: ' . print_r($j,true), LOGGER_DATA);
389 foreach($j->data as $person)
391 fb_get_friends_sync_full($uid, $access_token, $person);
393 fb_get_friends_sync_new($uid, $access_token, $person);
397 // This is the POST method to the facebook settings page
398 // Content is posted to Facebook in the function facebook_post_hook()
400 function facebook_post(&$a) {
405 $value = ((x($_POST,'post_by_default')) ? intval($_POST['post_by_default']) : 0);
406 set_pconfig($uid,'facebook','post_by_default', $value);
408 $no_linking = get_pconfig($uid,'facebook','no_linking');
410 $no_wall = ((x($_POST,'facebook_no_wall')) ? intval($_POST['facebook_no_wall']) : 0);
411 set_pconfig($uid,'facebook','no_wall',$no_wall);
413 $private_wall = ((x($_POST,'facebook_private_wall')) ? intval($_POST['facebook_private_wall']) : 0);
414 set_pconfig($uid,'facebook','private_wall',$private_wall);
417 set_pconfig($uid,'facebook','blocked_apps',escape_tags(trim($_POST['blocked_apps'])));
419 $linkvalue = ((x($_POST,'facebook_linking')) ? intval($_POST['facebook_linking']) : 0);
420 set_pconfig($uid,'facebook','no_linking', (($linkvalue) ? 0 : 1));
422 // FB linkage was allowed but has just been turned off - remove all FB contacts and posts
424 if((! intval($no_linking)) && (! intval($linkvalue))) {
425 $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `network` = '%s' ",
427 dbesc(NETWORK_FACEBOOK)
430 require_once('include/Contact.php');
432 contact_remove($rr['id']);
435 elseif(intval($no_linking) && intval($linkvalue)) {
436 // FB linkage is now allowed - import stuff.
438 fb_get_friends($uid, true);
439 fb_consume_all($uid);
442 info( t('Settings updated.') . EOL);
448 // Facebook settings form
450 function facebook_content(&$a) {
453 notice( t('Permission denied.') . EOL);
457 if($a->argc > 1 && $a->argv[1] === 'remove') {
458 del_pconfig(local_user(),'facebook','post');
459 info( t('Facebook disabled') . EOL);
462 if($a->argc > 1 && $a->argv[1] === 'friends') {
463 fb_get_friends(local_user(), true);
464 info( t('Updating contacts') . EOL);
468 $fb_installed = get_pconfig(local_user(),'facebook','post');
470 $appid = get_config('facebook','appid');
473 notice( t('Facebook API key is missing.') . EOL);
477 $a->page['htmlhead'] .= '<link rel="stylesheet" type="text/css" href="'
478 . $a->get_baseurl() . '/addon/facebook/facebook.css' . '" media="all" />' . "\r\n";
480 $o .= '<h3>' . t('Facebook Connect') . '</h3>';
482 if(! $fb_installed) {
483 $o .= '<div id="facebook-enable-wrapper">';
485 $o .= '<a href="https://www.facebook.com/dialog/oauth?client_id=' . $appid . '&redirect_uri='
486 . $a->get_baseurl() . '/facebook/' . $a->user['nickname'] . '&scope=publish_stream,read_stream,offline_access">' . t('Install Facebook connector for this account.') . '</a>';
491 $o .= '<div id="facebook-disable-wrapper">';
493 $o .= '<a href="' . $a->get_baseurl() . '/facebook/remove' . '">' . t('Remove Facebook connector') . '</a></div>';
495 $o .= '<div id="facebook-enable-wrapper">';
497 $o .= '<a href="https://www.facebook.com/dialog/oauth?client_id=' . $appid . '&redirect_uri='
498 . $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>';
501 $o .= '<div id="facebook-post-default-form">';
502 $o .= '<form action="facebook" method="post" >';
503 $post_by_default = get_pconfig(local_user(),'facebook','post_by_default');
504 $checked = (($post_by_default) ? ' checked="checked" ' : '');
505 $o .= '<input type="checkbox" name="post_by_default" value="1"' . $checked . '/>' . ' ' . t('Post to Facebook by default') . EOL;
507 $no_linking = get_pconfig(local_user(),'facebook','no_linking');
508 $checked = (($no_linking) ? '' : ' checked="checked" ');
509 $o .= '<input type="checkbox" name="facebook_linking" value="1"' . $checked . '/>' . ' ' . t('Link all your Facebook friends and conversations on this website') . EOL ;
511 $o .= '<p>' . t('Facebook conversations consist of your <em>profile wall</em> and your friend <em>stream</em>.');
512 $o .= ' ' . t('On this website, your Facebook friend stream is only visible to you.');
513 $o .= ' ' . t('The following settings determine the privacy of your Facebook profile wall on this website.') . '</p>';
515 $private_wall = get_pconfig(local_user(),'facebook','private_wall');
516 $checked = (($private_wall) ? ' checked="checked" ' : '');
517 $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 ;
520 $no_wall = get_pconfig(local_user(),'facebook','no_wall');
521 $checked = (($no_wall) ? ' checked="checked" ' : '');
522 $o .= '<input type="checkbox" name="facebook_no_wall" value="1"' . $checked . '/>' . ' ' . t('Do not import your Facebook profile wall conversations') . EOL ;
524 $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>';
527 $blocked_apps = get_pconfig(local_user(),'facebook','blocked_apps');
529 $o .= '<div><label id="blocked-apps-label" for="blocked-apps">' . t('Comma separated applications to ignore') . ' </label></div>';
530 $o .= '<div><textarea id="blocked-apps" name="blocked_apps" >' . htmlspecialchars($blocked_apps) . '</textarea></div>';
532 $o .= '<input type="submit" name="submit" value="' . t('Submit') . '" /></form></div>';
540 function facebook_cron($a,$b) {
542 $last = get_config('facebook','last_poll');
544 $poll_interval = intval(get_config('facebook','poll_interval'));
546 $poll_interval = 3600;
549 $next = $last + $poll_interval;
554 logger('facebook_cron');
557 // Find the FB users on this site and randomize in case one of them
558 // uses an obscene amount of memory. It may kill this queue run
559 // but hopefully we'll get a few others through on each run.
561 $r = q("SELECT * FROM `pconfig` WHERE `cat` = 'facebook' AND `k` = 'post' AND `v` = '1' ORDER BY RAND() ");
564 if(get_pconfig($rr['uid'],'facebook','no_linking'))
566 $ab = intval(get_config('system','account_abandon_days'));
568 $z = q("SELECT `uid` FROM `user` WHERE `uid` = %d AND `login_date` > UTC_TIMESTAMP() - INTERVAL %d DAY LIMIT 1",
576 // check for new friends once a day
577 $last_friend_check = get_pconfig($rr['uid'],'facebook','friend_check');
578 if($last_friend_check)
579 $next_friend_check = $last_friend_check + 86400;
580 if($next_friend_check <= time()) {
581 fb_get_friends($rr['uid'], true);
582 set_pconfig($rr['uid'],'facebook','friend_check',time());
584 fb_consume_all($rr['uid']);
588 if (get_config('facebook', 'realtime_active') == 1) {
589 if (!facebook_check_realtime_active()) {
591 logger('facebook_cron: Facebook is not sending Real-Time Updates any more, although it is supposed to. Trying to fix it...', LOGGER_NORMAL);
592 facebook_subscription_add_users();
594 if (facebook_check_realtime_active())
595 logger('facebook_cron: Successful', LOGGER_NORMAL);
597 logger('facebook_cron: Failed', LOGGER_NORMAL);
599 if(strlen($a->config['admin_email']) && !get_config('facebook', 'realtime_err_mailsent')) {
600 $res = mail($a->config['admin_email'], t('Problems with Facebook Real-Time Updates'),
601 "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.",
602 'From: ' . t('Administrator') . '@' . $_SERVER['SERVER_NAME'] . "\n"
603 . 'Content-type: text/plain; charset=UTF-8' . "\n"
604 . 'Content-transfer-encoding: 8bit'
607 set_config('facebook', 'realtime_err_mailsent', 1);
610 } else { // !facebook_check_realtime_active()
611 del_config('facebook', 'realtime_err_mailsent');
615 set_config('facebook','last_poll', time());
621 function facebook_plugin_settings(&$a,&$b) {
623 $b .= '<div class="settings-block">';
624 $b .= '<h3>' . t('Facebook') . '</h3>';
625 $b .= '<a href="facebook">' . t('Facebook Connector Settings') . '</a><br />';
631 function facebook_plugin_admin(&$a, &$o){
633 $activated = facebook_check_realtime_active();
635 $o = t('Real-Time Updates are activated.') . '<br><br>';
636 $o .= '<input type="submit" name="real_time_deactivate" value="' . t('Deactivate Real-Time Updates') . '">';
638 $o = t('Real-Time Updates not activated.') . '<br><input type="submit" name="real_time_activate" value="' . t('Activate Real-Time Updates') . '">';
642 function facebook_plugin_admin_post(&$a, &$o){
643 if (x($_REQUEST,'real_time_activate')) {
644 facebook_subscription_add_users();
646 if (x($_REQUEST,'real_time_deactivate')) {
647 facebook_subscription_del_users();
651 function facebook_jot_nets(&$a,&$b) {
655 $fb_post = get_pconfig(local_user(),'facebook','post');
656 if(intval($fb_post) == 1) {
657 $fb_defpost = get_pconfig(local_user(),'facebook','post_by_default');
658 $selected = ((intval($fb_defpost) == 1) ? ' checked="checked" ' : '');
659 $b .= '<div class="profile-jot-net"><input type="checkbox" name="facebook_enable"' . $selected . ' value="1" /> '
660 . t('Post to Facebook') . '</div>';
665 function facebook_post_hook(&$a,&$b) {
668 if($b['deleted'] || ($b['created'] !== $b['edited']))
672 * Post to Facebook stream
675 require_once('include/group.php');
677 logger('Facebook post');
682 $toplevel = (($b['id'] == $b['parent']) ? true : false);
685 $linking = ((get_pconfig($b['uid'],'facebook','no_linking')) ? 0 : 1);
687 if((! $toplevel) && ($linking)) {
688 $r = q("SELECT * FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
689 intval($b['parent']),
692 if(count($r) && substr($r[0]['uri'],0,4) === 'fb::')
693 $reply = substr($r[0]['uri'],4);
694 elseif(count($r) && substr($r[0]['extid'],0,4) === 'fb::')
695 $reply = substr($r[0]['extid'],4);
699 $u = q("SELECT * FROM user where uid = %d limit 1",
705 // only accept comments from the item owner. Other contacts are unknown to FB.
707 if(! link_compare($b['author-link'], $a->get_baseurl() . '/profile/' . $u[0]['nickname']))
711 logger('facebook reply id=' . $reply);
714 if(strstr($b['postopts'],'facebook') || ($b['private']) || ($reply)) {
716 if($b['private'] && $reply === false) {
717 $allow_people = expand_acl($b['allow_cid']);
718 $allow_groups = expand_groups(expand_acl($b['allow_gid']));
719 $deny_people = expand_acl($b['deny_cid']);
720 $deny_groups = expand_groups(expand_acl($b['deny_gid']));
722 $recipients = array_unique(array_merge($allow_people,$allow_groups));
723 $deny = array_unique(array_merge($deny_people,$deny_groups));
725 $allow_str = dbesc(implode(', ',$recipients));
727 $r = q("SELECT `notify` FROM `contact` WHERE `id` IN ( $allow_str ) AND `network` = 'face'");
728 $allow_arr = array();
731 $allow_arr[] = $rr['notify'];
734 $deny_str = dbesc(implode(', ',$deny));
736 $r = q("SELECT `notify` FROM `contact` WHERE `id` IN ( $deny_str ) AND `network` = 'face'");
740 $deny_arr[] = $rr['notify'];
743 if(count($deny_arr) && (! count($allow_arr))) {
745 // One or more FB folks were denied access but nobody on FB was specifically allowed access.
746 // This might cause the post to be open to public on Facebook, but only to selected members
747 // on another network. Since this could potentially leak a post to somebody who was denied,
748 // we will skip posting it to Facebook with a slightly vague but relevant message that will
749 // hopefully lead somebody to this code comment for a better explanation of what went wrong.
751 notice( t('Post to Facebook cancelled because of multi-network access permission conflict.') . EOL);
756 // if it's a private message but no Facebook members are allowed or denied, skip Facebook post
758 if((! count($allow_arr)) && (! count($deny_arr)))
762 if($b['verb'] == ACTIVITY_LIKE)
766 $appid = get_config('facebook', 'appid' );
767 $secret = get_config('facebook', 'appsecret' );
769 if($appid && $secret) {
771 logger('facebook: have appid+secret');
773 $fb_token = get_pconfig($b['uid'],'facebook','access_token');
776 // post to facebook if it's a public post and we've ticked the 'post to Facebook' box,
777 // or it's a private message with facebook participants
778 // or it's a reply or likes action to an existing facebook post
780 if($fb_token && ($toplevel || $b['private'] || $reply)) {
781 logger('facebook: able to post');
782 require_once('library/facebook.php');
783 require_once('include/bbcode.php');
787 logger('Facebook post: original msg=' . $msg, LOGGER_DATA);
789 // make links readable before we strip the code
791 // unless it's a dislike - just send the text as a comment
793 if($b['verb'] == ACTIVITY_DISLIKE)
794 $msg = trim(strip_tags(bbcode($msg)));
796 $search_str = $a->get_baseurl() . '/search';
798 if(preg_match("/\[url=(.*?)\](.*?)\[\/url\]/is",$msg,$matches)) {
800 // don't use hashtags for message link
802 if(strpos($matches[2],$search_str) === false) {
804 if(substr($matches[2],0,5) != '[img]')
805 $linkname = $matches[2];
809 // strip tag links to avoid link clutter, this really should be
810 // configurable because we're losing information
812 $msg = preg_replace("/\#\[url=(.*?)\](.*?)\[\/url\]/is",'#$2',$msg);
814 // provide the link separately for normal links
815 $msg = preg_replace("/\[url=(.*?)\](.*?)\[\/url\]/is",'$2 $1',$msg);
817 if(preg_match("/\[img\](.*?)\[\/img\]/is",$msg,$matches))
818 $image = $matches[1];
820 $msg = preg_replace("/\[img\](.*?)\[\/img\]/is", t('Image: ') . '$1', $msg);
822 if((strpos($link,z_root()) !== false) && (! $image))
823 $image = $a->get_baseurl() . '/images/friendica-64.jpg';
825 $msg = trim(strip_tags(bbcode($msg)));
826 $msg = html_entity_decode($msg,ENT_QUOTES,'UTF-8');
828 // add any attachments as text urls
830 $arr = explode(',',$b['attach']);
834 foreach($arr as $r) {
836 $cnt = preg_match('|\[attach\]href=\"(.*?)\" size=\"(.*?)\" type=\"(.*?)\" title=\"(.*?)\"\[\/attach\]|',$r,$matches);
843 if (strlen($msg) > FACEBOOK_MAXPOSTLEN) {
845 require_once('library/slinky.php');
847 $display_url = $b['plink'];
849 $slinky = new Slinky( $display_url );
850 // setup a cascade of shortening services
851 // try to get a short link from these services
852 // in the order ur1.ca, trim, id.gd, tinyurl
853 $slinky->set_cascade( array( new Slinky_UR1ca(), new Slinky_Trim(), new Slinky_IsGd(), new Slinky_TinyURL() ) );
854 $shortlink = $slinky->short();
855 // the new message will be shortened such that "... $shortlink"
856 // will fit into the character limit
857 $msg = substr($msg, 0, FACEBOOK_MAXPOSTLEN - strlen($shortlink) - 4);
858 $msg .= '... ' . $shortlink;
863 logger('Facebook post: msg=' . $msg, LOGGER_DATA);
866 $postvars = array('access_token' => $fb_token);
870 'access_token' => $fb_token,
874 $postvars['picture'] = $image;
876 $postvars['link'] = $link;
878 $postvars['name'] = $linkname;
881 if(($b['private']) && ($toplevel)) {
882 $postvars['privacy'] = '{"value": "CUSTOM", "friends": "SOME_FRIENDS"';
883 if(count($allow_arr))
884 $postvars['privacy'] .= ',"allow": "' . implode(',',$allow_arr) . '"';
886 $postvars['privacy'] .= ',"deny": "' . implode(',',$deny_arr) . '"';
887 $postvars['privacy'] .= '}';
892 $url = 'https://graph.facebook.com/' . $reply . '/' . (($likes) ? 'likes' : 'comments');
895 $url = 'https://graph.facebook.com/me/feed';
897 $postvars['actions'] = '{"name": "' . t('View on Friendica') . '", "link": "' . $b['plink'] . '"}';
900 logger('facebook: post to ' . $url);
901 logger('facebook: postvars: ' . print_r($postvars,true));
903 // "test_mode" prevents anything from actually being posted.
904 // Otherwise, let's do it.
906 if(! get_config('facebook','test_mode')) {
907 $x = post_url($url, $postvars);
908 logger('Facebook post returns: ' . $x, LOGGER_DEBUG);
910 $retj = json_decode($x);
912 q("UPDATE `item` SET `extid` = '%s' WHERE `id` = %d LIMIT 1",
913 dbesc('fb::' . $retj->id),
919 $s = serialize(array('url' => $url, 'item' => $b['id'], 'post' => $postvars));
920 require_once('include/queue_fn.php');
921 add_to_queue($a->contact,NETWORK_FACEBOOK,$s);
922 notice( t('Facebook post failed. Queued for retry.') . EOL);
925 if (isset($retj->error) && $retj->error->type == "OAuthException" && $retj->error->code == 190) {
926 logger('Facebook session has expired due to changed password.', LOGGER_DEBUG);
928 $last_notification = get_pconfig($b['uid'], 'facebook', 'session_expired_mailsent');
929 if (!$last_notification || $last_notification < (time() - FACEBOOK_SESSION_ERR_NOTIFICATION_INTERVAL)) {
930 require_once('include/enotify.php');
932 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1", intval($b['uid']) );
935 'type' => NOTIFY_SYSTEM,
936 'system_type' => 'facebook_connection_invalid',
937 'language' => $r[0]['language'],
938 'to_name' => $r[0]['username'],
939 'to_email' => $r[0]['email'],
942 set_pconfig($b['uid'], 'facebook', 'session_expired_mailsent', time());
943 } else logger('Facebook: No notification, as the last one was sent on ' . $last_notification, LOGGER_DEBUG);
952 function facebook_enotify(&$app, &$data) {
953 if (x($data, 'params') && $data['params']['type'] == NOTIFY_SYSTEM && x($data['params'], 'system_type') && $data['params']['system_type'] == 'facebook_connection_invalid') {
954 $data['itemlink'] = '/facebook';
955 $data['epreamble'] = $data['preamble'] = t('Your Facebook connection became invalid. Please Re-authenticate.');
956 $data['subject'] = t('Facebook connection became invalid');
957 $data['body'] = sprintf( t("Hi %1\$s,\n\nThe connection between your accounts on %2\$s and Facebook became invalid. This usually happens after you change your Facebook-password. To enable the connection again, you have to %3\$sre-authenticate the Facebook-connector%4\$s."), $data['params']['to_name'], "[url=" . $app->config["system"]["url"] . "]" . $app->config["sitename"] . "[/url]", "[url=" . $app->config["system"]["url"] . "/facebook]", "[/url]");
961 function facebook_post_local(&$a,&$b) {
963 // Figure out if Facebook posting is enabled for this post and file it in 'postopts'
964 // where we will discover it during background delivery.
966 // This can only be triggered by a local user posting to their own wall.
968 if((local_user()) && (local_user() == $b['uid'])) {
970 $fb_post = intval(get_pconfig(local_user(),'facebook','post'));
971 $fb_enable = (($fb_post && x($_REQUEST,'facebook_enable')) ? intval($_REQUEST['facebook_enable']) : 0);
973 // if API is used, default to the chosen settings
974 if($_REQUEST['api_source'] && intval(get_pconfig(local_user(),'facebook','post_by_default')))
980 if(strlen($b['postopts']))
981 $b['postopts'] .= ',';
982 $b['postopts'] .= 'facebook';
987 function fb_queue_hook(&$a,&$b) {
989 $qi = q("SELECT * FROM `queue` WHERE `network` = '%s'",
990 dbesc(NETWORK_FACEBOOK)
995 require_once('include/queue_fn.php');
998 if($x['network'] !== NETWORK_FACEBOOK)
1001 logger('facebook_queue: run');
1003 $r = q("SELECT `user`.* FROM `user` LEFT JOIN `contact` on `contact`.`uid` = `user`.`uid`
1004 WHERE `contact`.`self` = 1 AND `contact`.`id` = %d LIMIT 1",
1012 $appid = get_config('facebook', 'appid' );
1013 $secret = get_config('facebook', 'appsecret' );
1015 if($appid && $secret) {
1016 $fb_post = intval(get_pconfig($user['uid'],'facebook','post'));
1017 $fb_token = get_pconfig($user['uid'],'facebook','access_token');
1019 if($fb_post && $fb_token) {
1020 logger('facebook_queue: able to post');
1021 require_once('library/facebook.php');
1023 $z = unserialize($x['content']);
1025 $j = post_url($z['url'],$z['post']);
1027 $retj = json_decode($j);
1029 q("UPDATE `item` SET `extid` = '%s' WHERE `id` = %d LIMIT 1",
1030 dbesc('fb::' . $retj->id),
1033 logger('facebook_queue: success: ' . $j);
1034 remove_queue_item($x['id']);
1037 logger('facebook_queue: failed: ' . $j);
1038 update_queue_time($x['id']);
1045 function fb_consume_all($uid) {
1047 require_once('include/items.php');
1049 $access_token = get_pconfig($uid,'facebook','access_token');
1053 if(! get_pconfig($uid,'facebook','no_wall')) {
1054 $private_wall = intval(get_pconfig($uid,'facebook','private_wall'));
1055 $s = fetch_url('https://graph.facebook.com/me/feed?access_token=' . $access_token);
1057 $j = json_decode($s);
1058 if (isset($j->data)) {
1059 logger('fb_consume_stream: wall: ' . print_r($j,true), LOGGER_DATA);
1060 fb_consume_stream($uid,$j,($private_wall) ? false : true);
1062 logger('fb_consume_stream: wall: got no data from Facebook: ' . print_r($j,true), LOGGER_NORMAL);
1066 $s = fetch_url('https://graph.facebook.com/me/home?access_token=' . $access_token);
1068 $j = json_decode($s);
1069 if (isset($j->data)) {
1070 logger('fb_consume_stream: feed: ' . print_r($j,true), LOGGER_DATA);
1071 fb_consume_stream($uid,$j,false);
1073 logger('fb_consume_stream: feed: got no data from Facebook: ' . print_r($j,true), LOGGER_NORMAL);
1079 function fb_get_photo($uid,$link) {
1080 $access_token = get_pconfig($uid,'facebook','access_token');
1081 if(! $access_token || (! stristr($link,'facebook.com/photo.php')))
1082 return "\n" . '[url=' . $link . ']' . t('link') . '[/url]';
1083 $ret = preg_match('/fbid=([0-9]*)/',$link,$match);
1085 $photo_id = $match[1];
1086 $x = fetch_url('https://graph.facebook.com/' . $photo_id . '?access_token=' . $access_token);
1087 $j = json_decode($x);
1089 return "\n\n" . '[url=' . $link . '][img]' . $j->picture . '[/img][/url]';
1091 return "\n" . '[url=' . $link . ']' . t('link') . '[/url]';
1094 function fb_consume_stream($uid,$j,$wall = false) {
1099 $user = q("SELECT * FROM `user` WHERE `uid` = %d AND `account_expired` = 0 LIMIT 1",
1105 $my_local_url = $a->get_baseurl() . '/profile/' . $user[0]['nickname'];
1107 $no_linking = get_pconfig($uid,'facebook','no_linking');
1111 $self = q("SELECT * FROM `contact` WHERE `self` = 1 AND `uid` = %d LIMIT 1",
1115 $blocked_apps = get_pconfig($uid,'facebook','blocked_apps');
1116 $blocked_apps_arr = explode(',',$blocked_apps);
1118 $self_id = get_pconfig($uid,'facebook','self_id');
1119 if(! count($j->data) || (! strlen($self_id)))
1122 foreach($j->data as $entry) {
1123 logger('fb_consume: entry: ' . print_r($entry,true), LOGGER_DATA);
1124 $datarray = array();
1126 $r = q("SELECT * FROM `item` WHERE ( `uri` = '%s' OR `extid` = '%s') AND `uid` = %d LIMIT 1",
1127 dbesc('fb::' . $entry->id),
1128 dbesc('fb::' . $entry->id),
1132 $post_exists = true;
1134 $top_item = $r[0]['id'];
1137 $post_exists = false;
1142 $datarray['gravity'] = 0;
1143 $datarray['uid'] = $uid;
1144 $datarray['wall'] = (($wall) ? 1 : 0);
1145 $datarray['uri'] = $datarray['parent-uri'] = 'fb::' . $entry->id;
1146 $from = $entry->from;
1147 if($from->id == $self_id)
1148 $datarray['contact-id'] = $self[0]['id'];
1150 $r = q("SELECT * FROM `contact` WHERE `notify` = '%s' AND `uid` = %d AND `blocked` = 0 AND `readonly` = 0 LIMIT 1",
1155 $datarray['contact-id'] = $r[0]['id'];
1158 // don't store post if we don't have a contact
1160 if(! x($datarray,'contact-id')) {
1161 logger('no contact: post ignored');
1165 $datarray['verb'] = ACTIVITY_POST;
1167 $datarray['owner-name'] = $self[0]['name'];
1168 $datarray['owner-link'] = $self[0]['url'];
1169 $datarray['owner-avatar'] = $self[0]['thumb'];
1171 if(isset($entry->application) && isset($entry->application->name) && strlen($entry->application->name))
1172 $datarray['app'] = strip_tags($entry->application->name);
1174 $datarray['app'] = 'facebook';
1176 $found_blocked = false;
1178 if(count($blocked_apps_arr)) {
1179 foreach($blocked_apps_arr as $bad_appl) {
1180 if(strlen(trim($bad_appl)) && (stristr($datarray['app'],trim($bad_appl)))) {
1181 $found_blocked = true;
1186 if($found_blocked) {
1187 logger('facebook: blocking application: ' . $datarray['app']);
1191 $datarray['author-name'] = $from->name;
1192 $datarray['author-link'] = 'http://facebook.com/profile.php?id=' . $from->id;
1193 $datarray['author-avatar'] = 'https://graph.facebook.com/' . $from->id . '/picture';
1194 $datarray['plink'] = $datarray['author-link'] . '&v=wall&story_fbid=' . substr($entry->id,strpos($entry->id,'_') + 1);
1196 $datarray['body'] = escape_tags($entry->message);
1198 if($entry->picture && $entry->link) {
1199 $datarray['body'] .= "\n\n" . '[url=' . $entry->link . '][img]' . $entry->picture . '[/img][/url]';
1203 $datarray['body'] .= "\n\n" . '[img]' . $entry->picture . '[/img]';
1204 // if just a link, it may be a wall photo - check
1206 $datarray['body'] .= fb_get_photo($uid,$entry->link);
1209 $datarray['body'] .= "\n" . $entry->name;
1211 $datarray['body'] .= "\n" . $entry->caption;
1212 if($entry->description)
1213 $datarray['body'] .= "\n" . $entry->description;
1214 $datarray['created'] = datetime_convert('UTC','UTC',$entry->created_time);
1215 $datarray['edited'] = datetime_convert('UTC','UTC',$entry->updated_time);
1217 // If the entry has a privacy policy, we cannot assume who can or cannot see it,
1218 // as the identities are from a foreign system. Mark it as private to the owner.
1220 if($entry->privacy && $entry->privacy->value !== 'EVERYONE') {
1221 $datarray['private'] = 1;
1222 $datarray['allow_cid'] = '<' . $self[0]['id'] . '>';
1225 if(trim($datarray['body']) == '') {
1226 logger('facebook: empty body');
1230 $top_item = item_store($datarray);
1231 $r = q("SELECT * FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
1237 logger('fb: new top level item posted');
1241 if(isset($entry->likes) && isset($entry->likes->data))
1242 $likers = $entry->likes->data;
1246 if(isset($entry->comments) && isset($entry->comments->data))
1247 $comments = $entry->comments->data;
1251 if(is_array($likers)) {
1252 foreach($likers as $likes) {
1257 // If we posted the like locally, it will be found with our url, not the FB url.
1259 $second_url = (($likes->id == $self_id) ? $self[0]['url'] : 'http://facebook.com/profile.php?id=' . $likes->id);
1261 $r = q("SELECT * FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `verb` = '%s'
1262 AND ( `author-link` = '%s' OR `author-link` = '%s' ) LIMIT 1",
1263 dbesc($orig_post['uri']),
1265 dbesc(ACTIVITY_LIKE),
1266 dbesc('http://facebook.com/profile.php?id=' . $likes->id),
1273 $likedata = array();
1274 $likedata['parent'] = $top_item;
1275 $likedata['verb'] = ACTIVITY_LIKE;
1276 $likedata['gravity'] = 3;
1277 $likedata['uid'] = $uid;
1278 $likedata['wall'] = (($wall) ? 1 : 0);
1279 $likedata['uri'] = item_new_uri($a->get_baseurl(), $uid);
1280 $likedata['parent-uri'] = $orig_post['uri'];
1281 if($likes->id == $self_id)
1282 $likedata['contact-id'] = $self[0]['id'];
1284 $r = q("SELECT * FROM `contact` WHERE `notify` = '%s' AND `uid` = %d AND `blocked` = 0 AND `readonly` = 0 LIMIT 1",
1289 $likedata['contact-id'] = $r[0]['id'];
1291 if(! x($likedata,'contact-id'))
1292 $likedata['contact-id'] = $orig_post['contact-id'];
1294 $likedata['app'] = 'facebook';
1295 $likedata['verb'] = ACTIVITY_LIKE;
1296 $likedata['author-name'] = $likes->name;
1297 $likedata['author-link'] = 'http://facebook.com/profile.php?id=' . $likes->id;
1298 $likedata['author-avatar'] = 'https://graph.facebook.com/' . $likes->id . '/picture';
1300 $author = '[url=' . $likedata['author-link'] . ']' . $likedata['author-name'] . '[/url]';
1301 $objauthor = '[url=' . $orig_post['author-link'] . ']' . $orig_post['author-name'] . '[/url]';
1302 $post_type = t('status');
1303 $plink = '[url=' . $orig_post['plink'] . ']' . $post_type . '[/url]';
1304 $likedata['object-type'] = ACTIVITY_OBJ_NOTE;
1306 $likedata['body'] = sprintf( t('%1$s likes %2$s\'s %3$s'), $author, $objauthor, $plink);
1307 $likedata['object'] = '<object><type>' . ACTIVITY_OBJ_NOTE . '</type><local>1</local>' .
1308 '<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>';
1310 $item = item_store($likedata);
1313 if(is_array($comments)) {
1314 foreach($comments as $cmnt) {
1319 $r = q("SELECT * FROM `item` WHERE `uid` = %d AND ( `uri` = '%s' OR `extid` = '%s' ) LIMIT 1",
1321 dbesc('fb::' . $cmnt->id),
1322 dbesc('fb::' . $cmnt->id)
1327 $cmntdata = array();
1328 $cmntdata['parent'] = $top_item;
1329 $cmntdata['verb'] = ACTIVITY_POST;
1330 $cmntdata['gravity'] = 6;
1331 $cmntdata['uid'] = $uid;
1332 $cmntdata['wall'] = (($wall) ? 1 : 0);
1333 $cmntdata['uri'] = 'fb::' . $cmnt->id;
1334 $cmntdata['parent-uri'] = $orig_post['uri'];
1335 if($cmnt->from->id == $self_id) {
1336 $cmntdata['contact-id'] = $self[0]['id'];
1339 $r = q("SELECT * FROM `contact` WHERE `notify` = '%s' AND `uid` = %d LIMIT 1",
1340 dbesc($cmnt->from->id),
1344 $cmntdata['contact-id'] = $r[0]['id'];
1345 if($r[0]['blocked'] || $r[0]['readonly'])
1349 if(! x($cmntdata,'contact-id'))
1350 $cmntdata['contact-id'] = $orig_post['contact-id'];
1352 $cmntdata['app'] = 'facebook';
1353 $cmntdata['created'] = datetime_convert('UTC','UTC',$cmnt->created_time);
1354 $cmntdata['edited'] = datetime_convert('UTC','UTC',$cmnt->created_time);
1355 $cmntdata['verb'] = ACTIVITY_POST;
1356 $cmntdata['author-name'] = $cmnt->from->name;
1357 $cmntdata['author-link'] = 'http://facebook.com/profile.php?id=' . $cmnt->from->id;
1358 $cmntdata['author-avatar'] = 'https://graph.facebook.com/' . $cmnt->from->id . '/picture';
1359 $cmntdata['body'] = $cmnt->message;
1360 $item = item_store($cmntdata);
1362 $myconv = q("SELECT `author-link`, `author-avatar`, `parent` FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `parent` != 0 ",
1363 dbesc($orig_post['uri']),
1367 if(count($myconv)) {
1368 $importer_url = $a->get_baseurl() . '/profile/' . $user[0]['nickname'];
1370 foreach($myconv as $conv) {
1372 // now if we find a match, it means we're in this conversation
1374 if(! link_compare($conv['author-link'],$importer_url))
1377 require_once('include/enotify.php');
1379 $conv_parent = $conv['parent'];
1382 'type' => NOTIFY_COMMENT,
1383 'notify_flags' => $user[0]['notify-flags'],
1384 'language' => $user[0]['language'],
1385 'to_name' => $user[0]['username'],
1386 'to_email' => $user[0]['email'],
1387 'uid' => $user[0]['uid'],
1388 'item' => $cmntdata,
1389 'link' => $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $item,
1390 'source_name' => $cmntdata['author-name'],
1391 'source_link' => $cmntdata['author-link'],
1392 'source_photo' => $cmntdata['author-avatar'],
1393 'verb' => ACTIVITY_POST,
1395 'parent' => $conv_parent,
1398 // only send one notification
1408 function fb_get_app_access_token() {
1410 $acc_token = get_config('facebook','app_access_token');
1412 if ($acc_token !== false) return $acc_token;
1414 $appid = get_config('facebook','appid');
1415 $appsecret = get_config('facebook', 'appsecret');
1417 if ($appid === false || $appsecret === false) {
1418 logger('fb_get_app_access_token: appid and/or appsecret not set', LOGGER_DEBUG);
1422 $x = fetch_url('https://graph.facebook.com/oauth/access_token?client_id=' . $appid . '&client_secret=' . $appsecret . "&grant_type=client_credentials");
1424 if(strpos($x,'access_token=') !== false) {
1425 logger('fb_get_app_access_token: returned access token: ' . $x, LOGGER_DATA);
1427 $token = str_replace('access_token=', '', $x);
1428 if(strpos($token,'&') !== false)
1429 $token = substr($token,0,strpos($token,'&'));
1432 logger('fb_get_app_access_token: empty token: ' . $x, LOGGER_DEBUG);
1435 set_config('facebook','app_access_token',$token);
1438 logger('fb_get_app_access_token: response did not contain an access_token: ' . $x, LOGGER_DATA);
1443 function facebook_subscription_del_users() {
1445 $access_token = fb_get_app_access_token();
1447 $url = "https://graph.facebook.com/" . get_config('facebook', 'appid' ) . "/subscriptions?access_token=" . $access_token;
1448 facebook_delete_url($url);
1450 del_config('facebook', 'realtime_active');
1453 function facebook_subscription_add_users() {
1456 $access_token = fb_get_app_access_token();
1458 $url = "https://graph.facebook.com/" . get_config('facebook', 'appid' ) . "/subscriptions?access_token=" . $access_token;
1460 list($usec, $sec) = explode(" ", microtime());
1461 $verify_token = sha1($usec . $sec . rand(0, 999999999));
1462 set_config('facebook', 'cb_verify_token', $verify_token);
1464 $cb = $a->get_baseurl() . '/facebook/?realtime_cb=1';
1466 $j = post_url($url,array(
1468 "fields" => "feed,friends",
1469 "callback_url" => $cb,
1470 "verify_token" => $verify_token,
1472 del_config('facebook', 'cb_verify_token');
1475 logger("Facebook reponse: " . $j, LOGGER_DATA);
1477 if (facebook_check_realtime_active()) set_config('facebook', 'realtime_active', 1);
1481 function facebook_subscriptions_get() {
1483 $access_token = fb_get_app_access_token();
1484 if (!$access_token) return null;
1486 $url = "https://graph.facebook.com/" . get_config('facebook', 'appid' ) . "/subscriptions?access_token=" . $access_token;
1487 $j = fetch_url($url);
1490 $x = json_decode($j);
1491 if (isset($x->data)) $ret = $x->data;
1497 function facebook_check_realtime_active() {
1498 $ret = facebook_subscriptions_get();
1499 if (is_null($ret)) return false;
1500 if (is_array($ret)) foreach ($ret as $re) if (is_object($re) && $re->object == "user") return true;
1507 // DELETE-request to $url
1509 if(! function_exists('facebook_delete_url')) {
1510 function facebook_delete_url($url,$headers = null, &$redirects = 0, $timeout = 0) {
1512 $ch = curl_init($url);
1513 if(($redirects > 8) || (! $ch))
1516 curl_setopt($ch, CURLOPT_HEADER, true);
1517 curl_setopt($ch, CURLOPT_RETURNTRANSFER,true);
1518 curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "DELETE");
1519 curl_setopt($ch, CURLOPT_USERAGENT, "Friendica");
1521 if(intval($timeout)) {
1522 curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
1525 $curl_time = intval(get_config('system','curl_timeout'));
1526 curl_setopt($ch, CURLOPT_TIMEOUT, (($curl_time !== false) ? $curl_time : 60));
1529 if(defined('LIGHTTPD')) {
1530 if(!is_array($headers)) {
1531 $headers = array('Expect:');
1533 if(!in_array('Expect:', $headers)) {
1534 array_push($headers, 'Expect:');
1539 curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
1541 $check_cert = get_config('system','verifyssl');
1542 curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, (($check_cert) ? true : false));
1543 $prx = get_config('system','proxy');
1545 curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, 1);
1546 curl_setopt($ch, CURLOPT_PROXY, $prx);
1547 $prxusr = get_config('system','proxyuser');
1549 curl_setopt($ch, CURLOPT_PROXYUSERPWD, $prxusr);
1552 $a->set_curl_code(0);
1554 // don't let curl abort the entire application
1555 // if it throws any errors.
1557 $s = @curl_exec($ch);
1560 $curl_info = curl_getinfo($ch);
1561 $http_code = $curl_info['http_code'];
1565 // Pull out multiple headers, e.g. proxy and continuation headers
1566 // allow for HTTP/2.x without fixing code
1568 while(preg_match('/^HTTP\/[1-2].+? [1-5][0-9][0-9]/',$base)) {
1569 $chunk = substr($base,0,strpos($base,"\r\n\r\n")+4);
1571 $base = substr($base,strlen($chunk));
1574 if($http_code == 301 || $http_code == 302 || $http_code == 303) {
1576 preg_match('/(Location:|URI:)(.*?)\n/', $header, $matches);
1577 $url = trim(array_pop($matches));
1578 $url_parsed = @parse_url($url);
1579 if (isset($url_parsed)) {
1581 return delete_url($url,$headers,$redirects,$timeout);
1584 $a->set_curl_code($http_code);
1585 $body = substr($s,strlen($header));
1587 $a->set_curl_headers($header);