3 * Name: Facebook Post Connector
5 * Author: Mike Macgirvin <http://macgirvin.com/profile/mike>
6 * Author: Tobias Hößl <https://github.com/CatoTH/>
11 * Installing the Friendica/Facebook connector
13 * Detailed instructions how to use this plugin can be found at
14 * https://github.com/friendica/friendica/wiki/How-to:-Friendica%E2%80%99s-Facebook-connector
16 * Vidoes and embeds will not be posted if there is no other content. Links
17 * and images will be converted to a format suitable for the Facebook API and
18 * long posts truncated - with a link to view the full post.
20 * Facebook contacts will not be able to view private photos, as they are not able to
21 * authenticate to your site to establish identity. We will address this
22 * in a future release.
25 define('FACEBOOK_DEFAULT_POLL_INTERVAL', 5); // given in minutes
27 require_once('include/security.php');
29 function fbpost_install() {
30 register_hook('post_local', 'addon/fbpost/fbpost.php', 'fbpost_post_local');
31 register_hook('notifier_normal', 'addon/fbpost/fbpost.php', 'fbpost_post_hook');
32 register_hook('jot_networks', 'addon/fbpost/fbpost.php', 'fbpost_jot_nets');
33 register_hook('connector_settings', 'addon/fbpost/fbpost.php', 'fbpost_plugin_settings');
34 register_hook('enotify', 'addon/fbpost/fbpost.php', 'fbpost_enotify');
35 register_hook('queue_predeliver', 'addon/fbpost/fbpost.php', 'fbpost_queue_hook');
36 register_hook('cron', 'addon/fbpost/fbpost.php', 'fbpost_cron');
40 function fbpost_uninstall() {
41 unregister_hook('post_local', 'addon/fbpost/fbpost.php', 'fbpost_post_local');
42 unregister_hook('notifier_normal', 'addon/fbpost/fbpost.php', 'fbpost_post_hook');
43 unregister_hook('jot_networks', 'addon/fbpost/fbpost.php', 'fbpost_jot_nets');
44 unregister_hook('connector_settings', 'addon/fbpost/fbpost.php', 'fbpost_plugin_settings');
45 unregister_hook('enotify', 'addon/fbpost/fbpost.php', 'fbpost_enotify');
46 unregister_hook('queue_predeliver', 'addon/fbpost/fbpost.php', 'fbpost_queue_hook');
47 unregister_hook('cron', 'addon/fbpost/fbpost.php', 'fbpost_cron');
51 /* declare the fbpost_module function so that /fbpost url requests will land here */
53 function fbpost_module() {}
57 // If a->argv[1] is a nickname, this is a callback from Facebook oauth requests.
58 // If $_REQUEST["realtime_cb"] is set, this is a callback from the Real-Time Updates API
63 function fbpost_init(&$a) {
71 $r = q("SELECT `uid` FROM `user` WHERE `nickname` = '%s' LIMIT 1",
74 if(!(isset($r) && count($r)))
78 $auth_code = (x($_GET, 'code') ? $_GET['code'] : '');
79 $error = (x($_GET, 'error_description') ? $_GET['error_description'] : '');
83 logger('fbpost_init: Error: ' . $error);
85 if($auth_code && $uid) {
87 $appid = get_config('facebook','appid');
88 $appsecret = get_config('facebook', 'appsecret');
90 $x = fetch_url('https://graph.facebook.com/oauth/access_token?client_id='
91 . $appid . '&client_secret=' . $appsecret . '&redirect_uri='
92 . urlencode($a->get_baseurl() . '/fbpost/' . $nick)
93 . '&code=' . $auth_code);
95 logger('fbpost_init: returned access token: ' . $x, LOGGER_DATA);
97 if(strpos($x,'access_token=') !== false) {
98 $token = str_replace('access_token=', '', $x);
99 if(strpos($token,'&') !== false)
100 $token = substr($token,0,strpos($token,'&'));
101 set_pconfig($uid,'facebook','access_token',$token);
102 set_pconfig($uid,'facebook','post','1');
103 fbpost_get_self($uid);
114 function fbpost_get_self($uid) {
115 $access_token = get_pconfig($uid,'facebook','access_token');
118 $s = fetch_url('https://graph.facebook.com/me/?access_token=' . $access_token);
120 $j = json_decode($s);
121 set_pconfig($uid,'facebook','self_id',(string) $j->id);
126 // This is the POST method to the facebook settings page
127 // Content is posted to Facebook in the function facebook_post_hook()
132 function fbpost_post(&$a) {
137 $value = ((x($_POST,'post_by_default')) ? intval($_POST['post_by_default']) : 0);
138 set_pconfig($uid,'facebook','post_by_default', $value);
140 $value = ((x($_POST,'mirror_posts')) ? intval($_POST['mirror_posts']) : 0);
141 set_pconfig($uid,'facebook','mirror_posts', $value);
143 $value = ((x($_POST,'suppress_view_on_friendica')) ? intval($_POST['suppress_view_on_friendica']) : 0);
144 set_pconfig($uid,'facebook','suppress_view_on_friendica', $value);
146 $value = ((x($_POST,'post_to_page')) ? $_POST['post_to_page'] : "0-0");
147 $values = explode("-", $value);
148 set_pconfig($uid,'facebook','post_to_page', $values[0]);
149 set_pconfig($uid,'facebook','page_access_token', $values[1]);
151 $result = q("SELECT `installed` FROM `addon` WHERE `name` = 'fbsync' AND `installed`");
152 if (count($result) > 0) {
153 set_pconfig(local_user(),'fbsync','sync',intval($_POST['fbsync']));
154 set_pconfig(local_user(),'fbsync','create_user',intval($_POST['create_user']));
157 info( t('Settings updated.') . EOL);
163 // Facebook settings form
169 function fbpost_content(&$a) {
172 notice( t('Permission denied.') . EOL);
177 if(! service_class_allows(local_user(),'facebook_connect')) {
178 notice( t('Permission denied.') . EOL);
179 return upgrade_bool_message();
183 if($a->argc > 1 && $a->argv[1] === 'remove') {
184 del_pconfig(local_user(),'facebook','post');
185 info( t('Facebook Post disabled') . EOL);
188 require_once("mod/settings.php");
194 $fb_installed = false;
195 if (get_pconfig(local_user(),'facebook','post')) {
196 $access_token = get_pconfig(local_user(),'facebook','access_token');
198 // fetching the list of accounts to check, if facebook is working
199 // The value is needed several lines below.
200 $url = 'https://graph.facebook.com/me/accounts';
201 $s = fetch_url($url."?access_token=".$access_token, false, $redirects, 10);
203 $accounts = json_decode($s);
204 if (isset($accounts->data))
205 $fb_installed = true;
208 // I'm not totally sure, if this above will work in every situation,
209 // So this old code will be called as well.
210 if (!$fb_installed) {
211 $url ="https://graph.facebook.com/me/feed";
212 $s = fetch_url($url."?access_token=".$access_token."&limit=1", false, $redirects, 10);
214 $j = json_decode($s);
216 $fb_installed = true;
222 $appid = get_config('facebook','appid');
225 notice( t('Facebook API key is missing.') . EOL);
229 $a->page['htmlhead'] .= '<link rel="stylesheet" type="text/css" href="'
230 . $a->get_baseurl() . '/addon/fbpost/fbpost.css' . '" media="all" />' . "\r\n";
232 $result = q("SELECT `installed` FROM `addon` WHERE `name` = 'fbsync' AND `installed`");
233 $fbsync = (count($result) > 0);
236 $title = t('Facebook Import/Export/Mirror');
238 $title = t('Facebook Export/Mirror');
240 $o .= '<img class="connector" src="images/facebook.png" /><h3 class="connector">'.$title.'</h3>';
242 if(! $fb_installed) {
243 $o .= '<div id="fbpost-enable-wrapper">';
245 //read_stream,publish_stream,manage_pages,photo_upload,user_groups,offline_access
247 $o .= '<a href="https://www.facebook.com/dialog/oauth?client_id=' . $appid . '&redirect_uri='
248 . $a->get_baseurl() . '/fbpost/' . $a->user['nickname'] . '&scope=export_stream,read_stream,publish_stream,manage_pages,photo_upload,user_groups,publish_actions,user_friends,create_note,share_item,video_upload,status_update">' . t('Install Facebook Post connector for this account.') . '</a>';
253 $o .= '<div id="fbpost-disable-wrapper">';
255 $o .= '<a href="' . $a->get_baseurl() . '/fbpost/remove' . '">' . t('Remove Facebook Post connector') . '</a></div>';
257 $o .= '<div id="fbpost-enable-wrapper">';
259 $o .= '<a href="https://www.facebook.com/dialog/oauth?client_id=' . $appid . '&redirect_uri='
260 . $a->get_baseurl() . '/fbpost/' . $a->user['nickname'] . '&scope=export_stream,read_stream,publish_stream,manage_pages,photo_upload,user_groups,publish_actions,user_friends,create_note,share_item,video_upload,status_update">' . t('Re-authenticate [This is necessary whenever your Facebook password is changed.]') . '</a>';
263 $o .= '<div id="fbpost-post-default-form">';
264 $o .= '<form action="fbpost" method="post" >';
265 $post_by_default = get_pconfig(local_user(),'facebook','post_by_default');
266 $checked = (($post_by_default) ? ' checked="checked" ' : '');
267 $o .= '<input type="checkbox" name="post_by_default" value="1"' . $checked . '/>' . ' ' . t('Post to Facebook by default') . EOL;
269 $suppress_view_on_friendica = get_pconfig(local_user(),'facebook','suppress_view_on_friendica');
270 $checked = (($suppress_view_on_friendica) ? ' checked="checked" ' : '');
271 $o .= '<input type="checkbox" name="suppress_view_on_friendica" value="1"' . $checked . '/>' . ' ' . t('Suppress "View on friendica"') . EOL;
273 $mirror_posts = get_pconfig(local_user(),'facebook','mirror_posts');
274 $checked = (($mirror_posts) ? ' checked="checked" ' : '');
275 $o .= '<input type="checkbox" name="mirror_posts" value="1"' . $checked . '/>' . ' ' . t('Mirror wall posts from facebook to friendica.') . EOL;
278 $post_to_page = get_pconfig(local_user(),'facebook','post_to_page');
279 $page_access_token = get_pconfig(local_user(),'facebook','page_access_token');
280 $fb_token = get_pconfig($a->user['uid'],'facebook','access_token');
281 //$url = 'https://graph.facebook.com/me/accounts';
282 //$x = fetch_url($url."?access_token=".$fb_token, false, $redirects, 10);
283 //$accounts = json_decode($x);
285 $o .= t("Post to page/group:")."<select name='post_to_page'>";
286 if (intval($post_to_page) == 0)
287 $o .= "<option value='0-0' selected>".t('None')."</option>";
289 $o .= "<option value='0-0'>".t('None')."</option>";
291 foreach($accounts->data as $account) {
292 if (is_array($account->perms))
293 if ($post_to_page == $account->id)
294 $o .= "<option value='".$account->id."-".$account->access_token."' selected>".$account->name."</option>";
296 $o .= "<option value='".$account->id."-".$account->access_token."'>".$account->name."</option>";
299 $url = 'https://graph.facebook.com/me/groups';
300 $x = fetch_url($url."?access_token=".$fb_token, false, $redirects, 10);
301 $groups = json_decode($x);
303 foreach($groups->data as $group) {
304 if ($post_to_page == $group->id)
305 $o .= "<option value='".$group->id."-0' selected>".$group->name."</option>";
307 $o .= "<option value='".$group->id."-0'>".$group->name."</option>";
314 $o .= '<div class="clear"></div>';
316 $sync_enabled = get_pconfig(local_user(),'fbsync','sync');
317 $checked = (($sync_enabled) ? ' checked="checked" ' : '');
318 $o .= '<input type="checkbox" name="fbsync" value="1"' . $checked . '/>' . ' ' . t('Import Facebook newsfeed.') . EOL;
320 $create_user = get_pconfig(local_user(),'fbsync','create_user');
321 $checked = (($create_user) ? ' checked="checked" ' : '');
322 $o .= '<input type="checkbox" name="create_user" value="1"' . $checked . '/>' . ' ' . t('Automatically create contacts.') . EOL;
325 $o .= '<p><input type="submit" name="submit" value="' . t('Save Settings') . '" /></form></div>';
333 * @param null|object $b
335 function fbpost_plugin_settings(&$a,&$b) {
337 $enabled = get_pconfig(local_user(),'facebook','post');
338 $css = (($enabled) ? '' : '-disabled');
340 $result = q("SELECT `installed` FROM `addon` WHERE `name` = 'fbsync' AND `installed`");
341 if(count($result) > 0)
342 $title = t('Facebook Import/Export/Mirror');
344 $title = t('Facebook Export/Mirror');
346 $b .= '<div class="settings-block">';
347 $b .= '<a href="fbpost"><img class="connector'.$css.'" src="images/facebook.png" /><h3 class="connector">'.$title.'</h3></a>';
354 * @param null|object $o
356 function fbpost_plugin_admin(&$a, &$o){
359 $o = '<input type="hidden" name="form_security_token" value="' . get_form_security_token("fbsave") . '">';
361 $o .= '<h4>' . t('Facebook API Key') . '</h4>';
363 $appid = get_config('facebook', 'appid' );
364 $appsecret = get_config('facebook', 'appsecret' );
366 $ret1 = q("SELECT `v` FROM `config` WHERE `cat` = 'facebook' AND `k` = 'appid' LIMIT 1");
367 $ret2 = q("SELECT `v` FROM `config` WHERE `cat` = 'facebook' AND `k` = 'appsecret' LIMIT 1");
368 if ((count($ret1) > 0 && $ret1[0]['v'] != $appid) || (count($ret2) > 0 && $ret2[0]['v'] != $appsecret)) $o .= t('Error: it appears that you have specified the App-ID and -Secret in your .htconfig.php file. As long as they are specified there, they cannot be set using this form.<br><br>');
370 $o .= '<label for="fb_appid">' . t('App-ID / API-Key') . '</label><input id="fb_appid" name="appid" type="text" value="' . escape_tags($appid ? $appid : "") . '"><br style="clear: both;">';
371 $o .= '<label for="fb_appsecret">' . t('Application secret') . '</label><input id="fb_appsecret" name="appsecret" type="text" value="' . escape_tags($appsecret ? $appsecret : "") . '"><br style="clear: both;">';
373 $o .= '<input type="submit" name="fb_save_keys" value="' . t('Save') . '">';
381 function fbpost_plugin_admin_post(&$a){
382 check_form_security_token_redirectOnErr('/admin/plugins/fbpost', 'fbsave');
384 if (x($_REQUEST,'fb_save_keys')) {
385 set_config('facebook', 'appid', $_REQUEST['appid']);
386 set_config('facebook', 'appsecret', $_REQUEST['appsecret']);
388 info(t('The new values have been saved.'));
398 function fbpost_jot_nets(&$a,&$b) {
402 $fb_post = get_pconfig(local_user(),'facebook','post');
403 if(intval($fb_post) == 1) {
404 $fb_defpost = get_pconfig(local_user(),'facebook','post_by_default');
405 $selected = ((intval($fb_defpost) == 1) ? ' checked="checked" ' : '');
406 $b .= '<div class="profile-jot-net"><input type="checkbox" name="facebook_enable"' . $selected . ' value="1" /> '
407 . t('Post to Facebook') . '</div>';
411 function fbpost_createmsg($b) {
412 require_once("include/bbcode.php");
413 require_once("include/html2plain.php");
415 $b['body'] = bb_CleanPictureLinks($b['body']);
417 // Looking for the first image
419 if(preg_match("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/is",$b['body'],$matches))
420 $image = $matches[3];
423 if(preg_match("/\[img\](.*?)\[\/img\]/is",$b['body'],$matches))
424 $image = $matches[1];
426 $multipleimages = (strpos($b['body'], "[img") != strrpos($b['body'], "[img"));
428 // When saved into the database the content is sent through htmlspecialchars
429 // That means that we have to decode all image-urls
430 $image = htmlspecialchars_decode($image);
433 if ($b["title"] != "")
434 $body = $b["title"]."\n\n".$body;
436 if (strpos($body, "[bookmark") !== false) {
437 // splitting the text in two parts:
438 // before and after the bookmark
439 $pos = strpos($body, "[bookmark");
440 $body1 = substr($body, 0, $pos);
441 $body2 = substr($body, $pos);
443 // Removing all quotes after the bookmark
444 // they are mostly only the content after the bookmark.
445 $body2 = preg_replace("/\[quote\=([^\]]*)\](.*?)\[\/quote\]/ism",'',$body2);
446 $body2 = preg_replace("/\[quote\](.*?)\[\/quote\]/ism",'',$body2);
448 $pos2 = strpos($body2, "[/bookmark]");
450 $body2 = substr($body2, $pos2 + 11);
452 $body = $body1.$body2;
455 // Add some newlines so that the message could be cut better
456 $body = str_replace(array("[quote", "[bookmark", "[/bookmark]", "[/quote]"),
457 array("\n[quote", "\n[bookmark", "[/bookmark]\n", "[/quote]\n"), $body);
459 // remove the recycle signs and the names since they aren't helpful on twitter
460 // $recycle = html_entity_decode("♲ ", ENT_QUOTES, 'UTF-8');
461 // $body = preg_replace( '/'.$recycle.'\[url\=(\w+.*?)\](\w+.*?)\[\/url\]/i', "\n", $body);
463 // At first convert the text to html
464 $html = bbcode($body, false, false, 2);
466 // Then convert it to plain text
467 //$msg = trim($b['title']." \n\n".html2plain($html, 0, true));
468 $msg = trim(html2plain($html, 0, true));
469 $msg = html_entity_decode($msg,ENT_QUOTES,'UTF-8');
471 // Removing multiple newlines
472 while (strpos($msg, "\n\n\n") !== false)
473 $msg = str_replace("\n\n\n", "\n\n", $msg);
475 // Removing multiple spaces
476 while (strpos($msg, " ") !== false)
477 $msg = str_replace(" ", " ", $msg);
480 $msg = preg_replace('/(https?\:\/\/[a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/i', "", $msg);
486 // look for bookmark-bbcode and handle it with priority
487 if(preg_match("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/is",$b['body'],$matches)) {
489 $linkname = $matches[2];
492 $multiplelinks = (strpos($b['body'], "[bookmark") != strrpos($b['body'], "[bookmark"));
497 // If there is no bookmark element then take the first link
499 $links = collecturls($html);
500 if (sizeof($links) > 0) {
502 $link = current($links);
504 $multiplelinks = (sizeof($links) > 1);
509 $msglink = $b["plink"];
510 else if ($link != "")
512 else if ($multipleimages)
513 $msglink = $b["plink"];
514 else if ($image != "")
517 // Removing multiple spaces - again
518 while (strpos($msg, " ") !== false)
519 $msg = str_replace(" ", " ", $msg);
521 if ($msglink != "") {
522 // Looking if the link points to an image
523 $img_str = fetch_url($msglink);
525 $tempfile = tempnam(get_config("system","temppath"), "cache");
526 file_put_contents($tempfile, $img_str);
527 $mime = image_type_to_mime_type(exif_imagetype($tempfile));
532 if (($image == $msglink) OR (substr($mime, 0, 6) == "image/"))
533 return(array("msg"=>trim($msg), "link"=>"", "linkname"=>$linkname, "image"=>$msglink));
535 return(array("msg"=>trim($msg), "link"=>$msglink, "linkname"=>$linkname,"image"=>$image));
543 function fbpost_post_hook(&$a,&$b) {
545 logger('fbpost_post_hook: Facebook post invoked', LOGGER_DEBUG);
547 if($b['deleted'] || ($b['created'] !== $b['edited']))
550 logger('fbpost_post_hook: Facebook post first check successful', LOGGER_DEBUG);
552 // if post comes from facebook don't send it back
553 if(($b['app'] == "Facebook") AND ($b['verb'] != ACTIVITY_LIKE))
556 logger('fbpost_post_hook: Facebook post accepted', LOGGER_DEBUG);
559 * Post to Facebook stream
562 require_once('include/group.php');
563 require_once('include/html2plain.php');
570 $allow_arr = array();
572 $toplevel = (($b['id'] == $b['parent']) ? true : false);
575 $linking = ((get_pconfig($b['uid'],'facebook','no_linking')) ? 0 : 1);
577 if((!$toplevel) && ($linking)) {
578 $r = q("SELECT * FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
579 intval($b['parent']),
582 //$r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
583 // dbesc($b['parent-uri']),
587 // is it a reply to a facebook post?
588 // A reply to a toplevel post is only allowed for "real" facebook posts
589 if(count($r) && substr($r[0]['uri'],0,4) === 'fb::')
590 $reply = substr($r[0]['uri'],4);
591 elseif(count($r) && (substr($r[0]['extid'],0,4) === 'fb::') AND ($r[0]['id'] != $r[0]['parent']))
592 $reply = substr($r[0]['extid'],4);
596 $u = q("SELECT * FROM user where uid = %d limit 1",
602 // only accept comments from the item owner. Other contacts are unknown to FB.
604 if(! link_compare($b['author-link'], $a->get_baseurl() . '/profile/' . $u[0]['nickname']))
608 logger('fbpost_post_hook: facebook reply id=' . $reply);
611 if(strstr($b['postopts'],'facebook') || ($b['private']) || ($reply)) {
613 if($b['private'] && $reply === false) {
614 $allow_people = expand_acl($b['allow_cid']);
615 $allow_groups = expand_groups(expand_acl($b['allow_gid']));
616 $deny_people = expand_acl($b['deny_cid']);
617 $deny_groups = expand_groups(expand_acl($b['deny_gid']));
619 $recipients = array_unique(array_merge($allow_people,$allow_groups));
620 $deny = array_unique(array_merge($deny_people,$deny_groups));
622 $allow_str = dbesc(implode(', ',$recipients));
624 logger("fbpost_post_hook: private post to: ".$allow_str, LOGGER_DEBUG);
625 $r = q("SELECT `notify` FROM `contact` WHERE `id` IN ( $allow_str ) AND `network` = 'face'");
628 $allow_arr[] = $rr['notify'];
631 $deny_str = dbesc(implode(', ',$deny));
633 $r = q("SELECT `notify` FROM `contact` WHERE `id` IN ( $deny_str ) AND `network` = 'face'");
636 $deny_arr[] = $rr['notify'];
639 if(count($deny_arr) && (! count($allow_arr))) {
641 // One or more FB folks were denied access but nobody on FB was specifically allowed access.
642 // This might cause the post to be open to public on Facebook, but only to selected members
643 // on another network. Since this could potentially leak a post to somebody who was denied,
644 // we will skip posting it to Facebook with a slightly vague but relevant message that will
645 // hopefully lead somebody to this code comment for a better explanation of what went wrong.
647 notice( t('Post to Facebook cancelled because of multi-network access permission conflict.') . EOL);
652 // if it's a private message but no Facebook members are allowed or denied, skip Facebook post
654 if((! count($allow_arr)) && (! count($deny_arr)))
658 if($b['verb'] == ACTIVITY_LIKE) {
660 logger('fbpost_post_hook: liking '.print_r($b, true), LOGGER_DEBUG);
664 $appid = get_config('facebook', 'appid' );
665 $secret = get_config('facebook', 'appsecret' );
667 if($appid && $secret) {
669 logger('fbpost_post_hook: have appid+secret');
671 $fb_token = get_pconfig($b['uid'],'facebook','access_token');
674 // post to facebook if it's a public post and we've ticked the 'post to Facebook' box,
675 // or it's a private message with facebook participants
676 // or it's a reply or likes action to an existing facebook post
678 if($fb_token && ($toplevel || $b['private'] || $reply)) {
679 logger('fbpost_post_hook: able to post');
680 require_once('library/facebook.php');
681 require_once('include/bbcode.php');
685 logger('fbpost_post_hook: original msg=' . $msg, LOGGER_DATA);
688 $msgarr = fbpost_createmsg($b);
689 $msg = $msgarr["msg"];
690 $link = $msgarr["link"];
691 $image = $msgarr["image"];
692 $linkname = $msgarr["linkname"];
694 // Fallback - if message is empty
704 require_once("include/bbcode.php");
705 require_once("include/html2plain.php");
706 $msg = bb_CleanPictureLinks($msg);
707 $msg = bbcode($msg, false, false, 2, true);
708 $msg = trim(html2plain($msg, 0));
714 // If there is nothing to post then exit
718 logger('fbpost_post_hook: msg=' . $msg, LOGGER_DATA);
723 $postvars = array('access_token' => $fb_token);
725 // message, picture, link, name, caption, description, source, place, tags
726 //if(trim($link) != "")
727 // if (@exif_imagetype($link) != 0) {
733 'access_token' => $fb_token,
736 if(trim($image) != "")
737 $postvars['picture'] = $image;
739 if(trim($link) != "") {
740 $postvars['link'] = $link;
742 if ((stristr($link,'youtube')) || (stristr($link,'youtu.be')) || (stristr($link,'vimeo'))) {
746 if(trim($linkname) != "")
747 $postvars['name'] = $linkname;
750 if(($b['private']) && ($toplevel)) {
751 $postvars['privacy'] = '{"value": "CUSTOM", "friends": "SOME_FRIENDS"';
752 if(count($allow_arr))
753 $postvars['privacy'] .= ',"allow": "' . implode(',',$allow_arr) . '"';
755 $postvars['privacy'] .= ',"deny": "' . implode(',',$deny_arr) . '"';
756 $postvars['privacy'] .= '}';
760 $post_to_page = get_pconfig($b['uid'],'facebook','post_to_page');
761 $page_access_token = get_pconfig($b['uid'],'facebook','page_access_token');
762 if ((intval($post_to_page) != 0) and ($page_access_token != ""))
763 $target = $post_to_page;
768 $url = 'https://graph.facebook.com/' . $reply . '/' . (($likes) ? 'likes' : 'comments');
769 } else if (($video != "") or (($image == "") and ($link != ""))) {
770 // If it is a link to a video or a link without a preview picture then post it as a link
775 'access_token' => $fb_token,
779 $postvars['message'] = $msg;
781 $url = 'https://graph.facebook.com/'.$target.'/links';
782 } else if (($link == "") and ($image != "")) {
783 // If it is only an image without a page link then post this image as a photo
785 'access_token' => $fb_token,
789 $postvars['message'] = $msg;
791 $url = 'https://graph.facebook.com/'.$target.'/photos';
792 } else if (($link != "") or ($image != "") or ($b['title'] == '') or (strlen($msg) < 500)) {
793 $url = 'https://graph.facebook.com/'.$target.'/feed';
794 if (!get_pconfig($b['uid'],'facebook','suppress_view_on_friendica') and $b['plink'])
795 $postvars['actions'] = '{"name": "' . t('View on Friendica') . '", "link": "' . $b['plink'] . '"}';
797 // if its only a message and a subject and the message is larger than 500 characters then post it as note
799 'access_token' => $fb_token,
800 'message' => bbcode($b['body'], false, false),
801 'subject' => $b['title'],
803 $url = 'https://graph.facebook.com/'.$target.'/notes';
807 if (!$reply and ($target != "me") and $page_access_token)
808 $postvars['access_token'] = $page_access_token;
810 logger('fbpost_post_hook: post to ' . $url);
811 logger('fbpost_post_hook: postvars: ' . print_r($postvars,true));
813 // "test_mode" prevents anything from actually being posted.
814 // Otherwise, let's do it.
816 if(!get_config('facebook','test_mode')) {
817 $x = post_url($url, $postvars);
818 logger('fbpost_post_hook: post returns: ' . $x, LOGGER_DEBUG);
820 $retj = json_decode($x);
822 // Only set the extid when it isn't the toplevel post
823 q("UPDATE `item` SET `extid` = '%s' WHERE `id` = %d AND `parent` != %d",
824 dbesc('fb::' . $retj->id),
829 // Sometimes posts are accepted from facebook although it telling an error
830 // This leads to endless comment flooding.
832 // If it is a special kind of failure the post was receiced
833 // Although facebook said it wasn't received ...
834 if (!$likes AND (($retj->error->type != "OAuthException") OR ($retj->error->code != 2)) AND ($x <> "")) {
835 $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `self`", intval($b['uid']));
837 $a->contact = $r[0]["id"];
839 $s = serialize(array('url' => $url, 'item' => $b['id'], 'post' => $postvars));
840 require_once('include/queue_fn.php');
841 add_to_queue($a->contact,NETWORK_FACEBOOK,$s);
842 logger('fbpost_post_hook: Post failed, requeued.', LOGGER_DEBUG);
843 notice( t('Facebook post failed. Queued for retry.') . EOL);
846 if (isset($retj->error) && $retj->error->type == "OAuthException" && $retj->error->code == 190) {
847 logger('fbpost_post_hook: Facebook session has expired due to changed password.', LOGGER_DEBUG);
849 $last_notification = get_pconfig($b['uid'], 'facebook', 'session_expired_mailsent');
850 if (!$last_notification || $last_notification < (time() - FACEBOOK_SESSION_ERR_NOTIFICATION_INTERVAL)) {
851 require_once('include/enotify.php');
853 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1", intval($b['uid']));
856 'type' => NOTIFY_SYSTEM,
857 'system_type' => 'facebook_connection_invalid',
858 'language' => $r[0]['language'],
859 'to_name' => $r[0]['username'],
860 'to_email' => $r[0]['email'],
861 'source_name' => t('Administrator'),
862 'source_link' => $a->config["system"]["url"],
863 'source_photo' => $a->config["system"]["url"] . '/images/person-80.jpg',
866 set_pconfig($b['uid'], 'facebook', 'session_expired_mailsent', time());
867 } else logger('fbpost_post_hook: No notification, as the last one was sent on ' . $last_notification, LOGGER_DEBUG);
878 * @param object $data
880 function fbpost_enotify(&$app, &$data) {
881 if (x($data, 'params') && $data['params']['type'] == NOTIFY_SYSTEM && x($data['params'], 'system_type') && $data['params']['system_type'] == 'facebook_connection_invalid') {
882 $data['itemlink'] = '/fbpost';
883 $data['epreamble'] = $data['preamble'] = t('Your Facebook connection became invalid. Please Re-authenticate.');
884 $data['subject'] = t('Facebook connection became invalid');
885 $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=" . $app->config["system"]["url"] . "/fbpost]", "[/url]");
893 function fbpost_post_local(&$a,&$b) {
895 // Figure out if Facebook posting is enabled for this post and file it in 'postopts'
896 // where we will discover it during background delivery.
898 // This can only be triggered by a local user posting to their own wall.
900 if((local_user()) && (local_user() == $b['uid'])) {
902 $fb_post = intval(get_pconfig(local_user(),'facebook','post'));
903 $fb_enable = (($fb_post && x($_REQUEST,'facebook_enable')) ? intval($_REQUEST['facebook_enable']) : 0);
905 // if API is used, default to the chosen settings
906 // but allow a specific override
908 if($_REQUEST['api_source'] && intval(get_pconfig(local_user(),'facebook','post_by_default'))) {
909 if(! x($_REQUEST,'facebook_enable'))
916 if(strlen($b['postopts']))
917 $b['postopts'] .= ',';
918 $b['postopts'] .= 'facebook';
927 function fbpost_queue_hook(&$a,&$b) {
929 $qi = q("SELECT * FROM `queue` WHERE `network` = '%s'",
930 dbesc(NETWORK_FACEBOOK)
935 require_once('include/queue_fn.php');
938 if($x['network'] !== NETWORK_FACEBOOK)
941 logger('fbpost_queue_hook: run');
943 $r = q("SELECT `user`.* FROM `user` LEFT JOIN `contact` on `contact`.`uid` = `user`.`uid`
944 WHERE `contact`.`self` = 1 AND `contact`.`id` = %d LIMIT 1",
948 logger('fbpost_queue_hook: no user found for entry '.print_r($x, true));
949 update_queue_time($x['id']);
955 $appid = get_config('facebook', 'appid' );
956 $secret = get_config('facebook', 'appsecret' );
958 if($appid && $secret) {
959 $fb_post = intval(get_pconfig($user['uid'],'facebook','post'));
960 $fb_token = get_pconfig($user['uid'],'facebook','access_token');
962 if($fb_post && $fb_token) {
963 logger('fbpost_queue_hook: able to post');
964 require_once('library/facebook.php');
966 $z = unserialize($x['content']);
968 $j = post_url($z['url'],$z['post']);
970 $retj = json_decode($j);
972 // Only set the extid when it isn't the toplevel post
973 q("UPDATE `item` SET `extid` = '%s' WHERE `id` = %d AND `parent` != %d",
974 dbesc('fb::' . $retj->id),
978 logger('fbpost_queue_hook: success: ' . $j);
979 remove_queue_item($x['id']);
981 logger('fbpost_queue_hook: failed: ' . $j);
983 // If it is a special kind of failure the post was receiced
984 // Although facebook said it wasn't received ...
985 $ret = json_decode($j);
986 if (($ret->error->type != "OAuthException") OR ($ret->error->code != 2) AND ($j <> ""))
987 update_queue_time($x['id']);
989 logger('fbpost_queue_hook: Not requeued, since it seems to be received');
992 logger('fbpost_queue_hook: No fb_post or fb_token.');
993 update_queue_time($x['id']);
996 logger('fbpost_queue_hook: No appid or secret.');
997 update_queue_time($x['id']);
1004 * @return bool|string
1006 function fbpost_get_app_access_token() {
1008 $acc_token = get_config('facebook','app_access_token');
1010 if ($acc_token !== false) return $acc_token;
1012 $appid = get_config('facebook','appid');
1013 $appsecret = get_config('facebook', 'appsecret');
1015 if ($appid === false || $appsecret === false) {
1016 logger('fb_get_app_access_token: appid and/or appsecret not set', LOGGER_DEBUG);
1019 logger('https://graph.facebook.com/oauth/access_token?client_id=' . $appid . '&client_secret=' . $appsecret . '&grant_type=client_credentials', LOGGER_DATA);
1020 $x = fetch_url('https://graph.facebook.com/oauth/access_token?client_id=' . $appid . '&client_secret=' . $appsecret . '&grant_type=client_credentials');
1022 if(strpos($x,'access_token=') !== false) {
1023 logger('fb_get_app_access_token: returned access token: ' . $x, LOGGER_DATA);
1025 $token = str_replace('access_token=', '', $x);
1026 if(strpos($token,'&') !== false)
1027 $token = substr($token,0,strpos($token,'&'));
1030 logger('fb_get_app_access_token: empty token: ' . $x, LOGGER_DEBUG);
1033 set_config('facebook','app_access_token',$token);
1036 logger('fb_get_app_access_token: response did not contain an access_token: ' . $x, LOGGER_DATA);
1041 function fbpost_cron($a,$b) {
1042 $last = get_config('facebook','last_poll');
1044 $poll_interval = intval(get_config('facebook','poll_interval'));
1045 if(! $poll_interval)
1046 $poll_interval = FACEBOOK_DEFAULT_POLL_INTERVAL;
1049 $next = $last + ($poll_interval * 60);
1050 if($next > time()) {
1051 logger('facebook: poll intervall not reached');
1055 logger('facebook: cron_start');
1057 $r = q("SELECT * FROM `pconfig` WHERE `cat` = 'facebook' AND `k` = 'mirror_posts' AND `v` = '1' ORDER BY RAND() ");
1059 foreach($r as $rr) {
1060 logger('facebook: fetching for user '.$rr['uid']);
1061 fbpost_fetchwall($a, $rr['uid']);
1065 logger('facebook: cron_end');
1067 set_config('facebook','last_poll', time());
1070 function fbpost_fetchwall($a, $uid) {
1071 require_once("include/oembed.php");
1073 $access_token = get_pconfig($uid,'facebook','access_token');
1074 $post_to_page = get_pconfig($uid,'facebook','post_to_page');
1075 $lastcreated = get_pconfig($uid,'facebook','last_created');
1077 if ((int)$post_to_page == 0)
1078 $post_to_page = "me";
1080 $url = "https://graph.facebook.com/".$post_to_page."/feed?access_token=".$access_token;
1082 $first_time = ($lastcreated == "");
1084 if ($lastcreated != "")
1085 $url .= "&since=".urlencode($lastcreated);
1087 $feed = fetch_url($url);
1088 $data = json_decode($feed);
1090 if (!is_array($data->data))
1093 $items = array_reverse($data->data);
1095 foreach ($items as $item) {
1096 if ($item->created_time > $lastcreated)
1097 $lastcreated = $item->created_time;
1102 if ($item->application->id == get_config('facebook','appid'))
1105 if(isset($item->privacy) && ($item->privacy->value !== 'EVERYONE') && ($item->privacy->value !== ''))
1108 if (($post_to_page != $item->from->id) AND ((int)$post_to_page != 0))
1111 if (!strstr($item->id, $item->from->id."_") AND isset($item->to) AND ((int)$post_to_page == 0))
1114 $_SESSION["authenticated"] = true;
1115 $_SESSION["uid"] = $uid;
1118 $_REQUEST["type"] = "wall";
1119 $_REQUEST["api_source"] = true;
1120 $_REQUEST["profile_uid"] = $uid;
1121 $_REQUEST["source"] = "Facebook";
1123 $_REQUEST["title"] = "";
1125 $_REQUEST["body"] = (isset($item->message) ? escape_tags($item->message) : '');
1130 if(isset($item->name) and isset($item->link)) {
1131 $oembed_data = oembed_fetch_url($item->link);
1132 $type = $oembed_data->type;
1133 $content = "[bookmark=".$item->link."]".$item->name."[/bookmark]";
1134 } elseif (isset($item->name))
1135 $content .= "[b]".$item->name."[/b]";
1138 if(isset($item->description) and ($item->type != "photo"))
1139 $quote = $item->description;
1141 if(isset($item->caption) and ($item->type == "photo"))
1142 $quote = $item->caption;
1144 // Only import the picture when the message is no video
1145 // oembed display a picture of the video as well
1146 //if ($item->type != "video") {
1147 //if (($item->type != "video") and ($item->type != "photo")) {
1148 if (($type == "") OR ($type == "link")) {
1150 $type = $item->type;
1152 if(isset($item->picture) && isset($item->link))
1153 $content .= "\n".'[url='.$item->link.'][img]'.fpost_cleanpicture($item->picture).'[/img][/url]';
1155 if (isset($item->picture))
1156 $content .= "\n".'[img]'.fpost_cleanpicture($item->picture).'[/img]';
1157 // if just a link, it may be a wall photo - check
1158 if(isset($item->link))
1159 $content .= fbpost_get_photo($uid,$item->link);
1163 if(trim($_REQUEST["body"].$content.$quote) == '') {
1164 logger('facebook: empty body '.$item->id.' '.print_r($item, true));
1169 $_REQUEST["body"] .= "\n";
1172 $_REQUEST["body"] .= "[class=type-".$type."]";
1175 $_REQUEST["body"] .= trim($content);
1178 $_REQUEST["body"] .= "\n[quote]".$quote."[/quote]";
1181 $_REQUEST["body"] .= "[/class]";
1183 $_REQUEST["body"] = trim($_REQUEST["body"]);
1185 if (isset($item->place)) {
1186 if ($item->place->name or $item->place->location->street or
1187 $item->place->location->city or $item->place->location->country) {
1188 $_REQUEST["location"] = '';
1189 if ($item->place->name)
1190 $_REQUEST["location"] .= $item->place->name;
1191 if ($item->place->location->street)
1192 $_REQUEST["location"] .= " ".$item->place->location->street;
1193 if ($item->place->location->city)
1194 $_REQUEST["location"] .= " ".$item->place->location->city;
1195 if ($item->place->location->country)
1196 $_REQUEST["location"] .= " ".$item->place->location->country;
1198 $_REQUEST["location"] = trim($_REQUEST["location"]);
1200 if ($item->place->location->latitude and $item->place->location->longitude)
1201 $_REQUEST["coord"] = substr($item->place->location->latitude, 0, 8)
1202 .' '.substr($item->place->location->longitude, 0, 8);
1205 //print_r($_REQUEST);
1206 logger('facebook: posting for user '.$uid);
1208 require_once('mod/item.php');
1212 set_pconfig($uid,'facebook','last_created', $lastcreated);
1215 function fbpost_get_photo($uid,$link) {
1216 $access_token = get_pconfig($uid,'facebook','access_token');
1217 if(! $access_token || (! stristr($link,'facebook.com/photo.php')))
1220 $ret = preg_match('/fbid=([0-9]*)/',$link,$match);
1222 $photo_id = $match[1];
1226 $x = fetch_url('https://graph.facebook.com/'.$photo_id.'?access_token='.$access_token);
1227 $j = json_decode($x);
1229 return "\n\n".'[url='.$link.'][img]'.fpost_cleanpicture($j->picture).'[/img][/url]';
1234 function fpost_cleanpicture($image) {
1236 if ((strpos($image, ".fbcdn.net/") OR strpos($image, "/fbcdn-photos-")) and (substr($image, -6) == "_s.jpg"))
1237 $image = substr($image, 0, -6)."_n.jpg";
1239 $queryvar = fbpost_parse_query($image);
1240 if ($queryvar['url'] != "")
1241 $image = urldecode($queryvar['url']);
1246 function fbpost_parse_query($var) {
1248 * Use this function to parse out the query array element from
1249 * the output of parse_url().
1251 $var = parse_url($var, PHP_URL_QUERY);
1252 $var = html_entity_decode($var);
1253 $var = explode('&', $var);
1256 foreach($var as $val) {
1257 $x = explode('=', $val);
1258 $arr[$x[0]] = $x[1];
1261 unset($val, $x, $var);