fbpost/fbpost.php

   1 <?php
   2 /**
   3  * Name: Facebook Post Connector
   4  * Version: 1.3
   5  * Author: Mike Macgirvin <http://macgirvin.com/profile/mike>
   6  * Author: Tobias Hößl <https://github.com/CatoTH/>
   7  *
   8  */
   9
  10 /**
  11  * Installing the Friendica/Facebook connector
  12  *
  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
  15  *
  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.
  19  *
  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.
  23  */
  24
  25 define('FACEBOOK_DEFAULT_POLL_INTERVAL', 5); // given in minutes
  26
  27 require_once('include/security.php');
  28
  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');
  37 }
  38
  39
  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');
  48 }
  49
  50
  51 /* declare the fbpost_module function so that /fbpost url requests will land here */
  52
  53 function fbpost_module() {}
  54
  55
  56
  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
  59
  60 /**
  61  * @param App $a
  62  */
  63 function fbpost_init(&$a) {
  64
  65         if($a->argc != 2)
  66                 return;
  67
  68         $nick = $a->argv[1];
  69
  70         if(strlen($nick))
  71                 $r = q("SELECT `uid` FROM `user` WHERE `nickname` = '%s' LIMIT 1",
  72                                 dbesc($nick)
  73                 );
  74         if(!(isset($r) && count($r)))
  75                 return;
  76
  77         $uid           = $r[0]['uid'];
  78         $auth_code     = (x($_GET, 'code') ? $_GET['code'] : '');
  79         $error         = (x($_GET, 'error_description') ? $_GET['error_description'] : '');
  80
  81
  82         if($error)
  83                 logger('fbpost_init: Error: ' . $error);
  84
  85         if($auth_code && $uid) {
  86
  87                 $appid = get_config('facebook','appid');
  88                 $appsecret = get_config('facebook', 'appsecret');
  89
  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);
  94
  95                 logger('fbpost_init: returned access token: ' . $x, LOGGER_DATA);
  96
  97                 if(strpos($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);
 104                 }
 105
 106         }
 107
 108 }
 109
 110
 111 /**
 112  * @param int $uid
 113  */
 114 function fbpost_get_self($uid) {
 115         $access_token = get_pconfig($uid,'facebook','access_token');
 116         if(! $access_token)
 117                 return;
 118         $s = fetch_url('https://graph.facebook.com/me/?access_token=' . $access_token);
 119         if($s) {
 120                 $j = json_decode($s);
 121                 set_pconfig($uid,'facebook','self_id',(string) $j->id);
 122         }
 123 }
 124
 125
 126 // This is the POST method to the facebook settings page
 127 // Content is posted to Facebook in the function facebook_post_hook()
 128
 129 /**
 130  * @param App $a
 131  */
 132 function fbpost_post(&$a) {
 133
 134         $uid = local_user();
 135         if($uid){
 136
 137
 138                 $fb_limited = get_config('facebook','crestrict');
 139
 140
 141                 $value = ((x($_POST,'post_by_default')) ? intval($_POST['post_by_default']) : 0);
 142                 set_pconfig($uid,'facebook','post_by_default', $value);
 143
 144                 $value = ((x($_POST,'mirror_posts')) ? intval($_POST['mirror_posts']) : 0);
 145                 set_pconfig($uid,'facebook','mirror_posts', $value);
 146
 147                 $value = ((x($_POST,'suppress_view_on_friendica')) ? intval($_POST['suppress_view_on_friendica']) : 0);
 148                 set_pconfig($uid,'facebook','suppress_view_on_friendica', $value);
 149
 150                 $value = ((x($_POST,'post_to_page')) ? $_POST['post_to_page'] : "0-0");
 151                 $values = explode("-", $value);
 152                 set_pconfig($uid,'facebook','post_to_page', $values[0]);
 153                 set_pconfig($uid,'facebook','page_access_token', $values[1]);
 154
 155                 info( t('Settings updated.') . EOL);
 156         }
 157
 158         return;
 159 }
 160
 161 // Facebook settings form
 162
 163 /**
 164  * @param App $a
 165  * @return string
 166  */
 167 function fbpost_content(&$a) {
 168
 169         if(! local_user()) {
 170                 notice( t('Permission denied.') . EOL);
 171                 return '';
 172         }
 173
 174
 175         if(! service_class_allows(local_user(),'facebook_connect')) {
 176                 notice( t('Permission denied.') . EOL);
 177                 return upgrade_bool_message();
 178         }
 179
 180
 181         if($a->argc > 1 && $a->argv[1] === 'remove') {
 182                 del_pconfig(local_user(),'facebook','post');
 183                 info( t('Facebook Post disabled') . EOL);
 184         }
 185
 186         $o = '';
 187
 188         $fb_installed = false;
 189         if (get_pconfig(local_user(),'facebook','post')) {
 190                 $access_token = get_pconfig(local_user(),'facebook','access_token');
 191                 if ($access_token) {
 192                         $s = fetch_url('https://graph.facebook.com/me/feed?access_token=' . $access_token);
 193                         if($s) {
 194                                 $j = json_decode($s);
 195                                 if (isset($j->data)) $fb_installed = true;
 196                         }
 197                 }
 198         }
 199
 200         $appid = get_config('facebook','appid');
 201
 202         if(! $appid) {
 203                 notice( t('Facebook API key is missing.') . EOL);
 204                 return '';
 205         }
 206
 207         $a->page['htmlhead'] .= '<link rel="stylesheet" type="text/css" href="'
 208                 . $a->get_baseurl() . '/addon/fbpost/fbpost.css' . '" media="all" />' . "\r\n";
 209
 210         $o .= '<h3>' . t('Facebook Post') . '</h3>';
 211
 212         if(! $fb_installed) {
 213                 $o .= '<div id="fbpost-enable-wrapper">';
 214
 215                 $o .= '<a href="https://www.facebook.com/dialog/oauth?client_id=' . $appid . '&redirect_uri='
 216                         . $a->get_baseurl() . '/fbpost/' . $a->user['nickname'] . '&scope=read_stream,publish_stream,manage_pages,photo_upload,user_groups,offline_access">' . t('Install Facebook Post connector for this account.') . '</a>';
 217                 $o .= '</div>';
 218         }
 219
 220         if($fb_installed) {
 221                 $o .= '<div id="fbpost-disable-wrapper">';
 222
 223                 $o .= '<a href="' . $a->get_baseurl() . '/fbpost/remove' . '">' . t('Remove Facebook Post connector') . '</a></div>';
 224
 225                 $o .= '<div id="fbpost-enable-wrapper">';
 226
 227                 $o .= '<a href="https://www.facebook.com/dialog/oauth?client_id=' . $appid . '&redirect_uri='
 228                         . $a->get_baseurl() . '/fbpost/' . $a->user['nickname'] . '&scope=read_stream,publish_stream,manage_pages,photo_upload,user_groups,offline_access">' . t('Re-authenticate [This is necessary whenever your Facebook password is changed.]') . '</a>';
 229                 $o .= '</div>';
 230
 231                 $o .= '<div id="fbpost-post-default-form">';
 232                 $o .= '<form action="fbpost" method="post" >';
 233                 $post_by_default = get_pconfig(local_user(),'facebook','post_by_default');
 234                 $checked = (($post_by_default) ? ' checked="checked" ' : '');
 235                 $o .= '<input type="checkbox" name="post_by_default" value="1"' . $checked . '/>' . ' ' . t('Post to Facebook by default') . EOL;
 236
 237                 $suppress_view_on_friendica = get_pconfig(local_user(),'facebook','suppress_view_on_friendica');
 238                 $checked = (($suppress_view_on_friendica) ? ' checked="checked" ' : '');
 239                 $o .= '<input type="checkbox" name="suppress_view_on_friendica" value="1"' . $checked . '/>' . ' ' . t('Suppress "View on friendica"') . EOL;
 240
 241                 $mirror_posts = get_pconfig(local_user(),'facebook','mirror_posts');
 242                 $checked = (($mirror_posts) ? ' checked="checked" ' : '');
 243                 $o .= '<input type="checkbox" name="mirror_posts" value="1"' . $checked . '/>' . ' ' . t('Mirror wall posts from facebook to friendica.') . EOL;
 244
 245                 // List all pages
 246                 $post_to_page = get_pconfig(local_user(),'facebook','post_to_page');
 247                 $page_access_token = get_pconfig(local_user(),'facebook','page_access_token');
 248                 $fb_token  = get_pconfig($a->user['uid'],'facebook','access_token');
 249                 $url = 'https://graph.facebook.com/me/accounts';
 250                 $x = fetch_url($url."?access_token=".$fb_token);
 251                 $accounts = json_decode($x);
 252
 253                 $o .= t("Post to page/group:")."<select name='post_to_page'>";
 254                 if (intval($post_to_page) == 0)
 255                         $o .= "<option value='0-0' selected>".t('None')."</option>";
 256                 else
 257                         $o .= "<option value='0-0'>".t('None')."</option>";
 258
 259                 foreach($accounts->data as $account) {
 260                         if (is_array($account->perms))
 261                                 if ($post_to_page == $account->id)
 262                                         $o .= "<option value='".$account->id."-".$account->access_token."' selected>".$account->name."</option>";
 263                                 else
 264                                         $o .= "<option value='".$account->id."-".$account->access_token."'>".$account->name."</option>";
 265                 }
 266
 267                 $url = 'https://graph.facebook.com/me/groups';
 268                 $x = fetch_url($url."?access_token=".$fb_token);
 269                 $groups = json_decode($x);
 270
 271                 foreach($groups->data as $group) {
 272                         if ($post_to_page == $group->id)
 273                                 $o .= "<option value='".$group->id."-0' selected>".$group->name."</option>";
 274                         else
 275                                 $o .= "<option value='".$group->id."-0'>".$group->name."</option>";
 276                 }
 277
 278                 $o .= "</select>";
 279
 280                 $o .= '<p><input type="submit" name="submit" value="' . t('Submit') . '" /></form></div>';
 281
 282         }
 283
 284         return $o;
 285 }
 286
 287 /**
 288  * @param App $a
 289  * @param null|object $b
 290  */
 291 function fbpost_plugin_settings(&$a,&$b) {
 292
 293         $b .= '<div class="settings-block">';
 294         $b .= '<h3>' . t('Facebook') . '</h3>';
 295         $b .= '<a href="fbpost">' . t('Facebook Post Settings') . '</a><br />';
 296         $b .= '</div>';
 297
 298 }
 299
 300
 301 /**
 302  * @param App $a
 303  * @param null|object $o
 304  */
 305 function fbpost_plugin_admin(&$a, &$o){
 306
 307
 308         $o = '<input type="hidden" name="form_security_token" value="' . get_form_security_token("fbsave") . '">';
 309
 310         $o .= '<h4>' . t('Facebook API Key') . '</h4>';
 311
 312         $appid  = get_config('facebook', 'appid'  );
 313         $appsecret = get_config('facebook', 'appsecret' );
 314
 315         $ret1 = q("SELECT `v` FROM `config` WHERE `cat` = 'facebook' AND `k` = 'appid' LIMIT 1");
 316         $ret2 = q("SELECT `v` FROM `config` WHERE `cat` = 'facebook' AND `k` = 'appsecret' LIMIT 1");
 317         if ((count($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>');
 318
 319         $o .= '<label for="fb_appid">' . t('App-ID / API-Key') . '</label><input id="fb_appid" name="appid" type="text" value="' . escape_tags($appid ? $appid : "") . '"><br style="clear: both;">';
 320         $o .= '<label for="fb_appsecret">' . t('Application secret') . '</label><input id="fb_appsecret" name="appsecret" type="text" value="' . escape_tags($appsecret ? $appsecret : "") . '"><br style="clear: both;">';
 321
 322         $o .= '<input type="submit" name="fb_save_keys" value="' . t('Save') . '">';
 323
 324 }
 325
 326 /**
 327  * @param App $a
 328  */
 329
 330 function fbpost_plugin_admin_post(&$a){
 331         check_form_security_token_redirectOnErr('/admin/plugins/fbpost', 'fbsave');
 332
 333         if (x($_REQUEST,'fb_save_keys')) {
 334                 set_config('facebook', 'appid', $_REQUEST['appid']);
 335                 set_config('facebook', 'appsecret', $_REQUEST['appsecret']);
 336
 337                 info(t('The new values have been saved.'));
 338         }
 339
 340 }
 341
 342 /**
 343  * @param App $a
 344  * @param object $b
 345  * @return mixed
 346  */
 347 function fbpost_jot_nets(&$a,&$b) {
 348         if(! local_user())
 349                 return;
 350
 351         $fb_post = get_pconfig(local_user(),'facebook','post');
 352         if(intval($fb_post) == 1) {
 353                 $fb_defpost = get_pconfig(local_user(),'facebook','post_by_default');
 354                 $selected = ((intval($fb_defpost) == 1) ? ' checked="checked" ' : '');
 355                 $b .= '<div class="profile-jot-net"><input type="checkbox" name="facebook_enable"' . $selected . ' value="1" /> '
 356                         . t('Post to Facebook') . '</div>';
 357         }
 358 }
 359
 360 /**
 361  * @param App $a
 362  * @param object $b
 363  * @return mixed
 364  */
 365 function fbpost_post_hook(&$a,&$b) {
 366
 367
 368         if($b['deleted'] || ($b['created'] !== $b['edited']))
 369                 return;
 370
 371         // Don't transmit answers (have to be cleaned up in the following code)
 372         if($b['parent'] != $b['id'])
 373                 return;
 374
 375         // if post comes from facebook don't send it back
 376         if($b['app'] == "Facebook")
 377                 return;
 378
 379         /**
 380          * Post to Facebook stream
 381          */
 382
 383         require_once('include/group.php');
 384         require_once('include/html2plain.php');
 385
 386         logger('Facebook post');
 387
 388         $reply = false;
 389         $likes = false;
 390
 391         $deny_arr = array();
 392         $allow_arr = array();
 393
 394         $toplevel = (($b['id'] == $b['parent']) ? true : false);
 395
 396
 397         $linking = ((get_pconfig($b['uid'],'facebook','no_linking')) ? 0 : 1);
 398
 399         if((! $toplevel) && ($linking)) {
 400                 $r = q("SELECT * FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
 401                         intval($b['parent']),
 402                         intval($b['uid'])
 403                 );
 404                 if(count($r) && substr($r[0]['uri'],0,4) === 'fb::')
 405                         $reply = substr($r[0]['uri'],4);
 406                 elseif(count($r) && substr($r[0]['extid'],0,4) === 'fb::')
 407                         $reply = substr($r[0]['extid'],4);
 408                 else
 409                         return;
 410
 411                 $u = q("SELECT * FROM user where uid = %d limit 1",
 412                         intval($b['uid'])
 413                 );
 414                 if(! count($u))
 415                         return;
 416
 417                 // only accept comments from the item owner. Other contacts are unknown to FB.
 418
 419                 if(! link_compare($b['author-link'], $a->get_baseurl() . '/profile/' . $u[0]['nickname']))
 420                         return;
 421
 422
 423                 logger('facebook reply id=' . $reply);
 424         }
 425
 426         if(strstr($b['postopts'],'facebook') || ($b['private']) || ($reply)) {
 427
 428                 if($b['private'] && $reply === false) {
 429                         $allow_people = expand_acl($b['allow_cid']);
 430                         $allow_groups = expand_groups(expand_acl($b['allow_gid']));
 431                         $deny_people  = expand_acl($b['deny_cid']);
 432                         $deny_groups  = expand_groups(expand_acl($b['deny_gid']));
 433
 434                         $recipients = array_unique(array_merge($allow_people,$allow_groups));
 435                         $deny = array_unique(array_merge($deny_people,$deny_groups));
 436
 437                         $allow_str = dbesc(implode(', ',$recipients));
 438                         if($allow_str) {
 439                                 $r = q("SELECT `notify` FROM `contact` WHERE `id` IN ( $allow_str ) AND `network` = 'face'");
 440                                 if(count($r))
 441                                         foreach($r as $rr)
 442                                                 $allow_arr[] = $rr['notify'];
 443                         }
 444
 445                         $deny_str = dbesc(implode(', ',$deny));
 446                         if($deny_str) {
 447                                 $r = q("SELECT `notify` FROM `contact` WHERE `id` IN ( $deny_str ) AND `network` = 'face'");
 448                                 if(count($r))
 449                                         foreach($r as $rr)
 450                                                 $deny_arr[] = $rr['notify'];
 451                         }
 452
 453                         if(count($deny_arr) && (! count($allow_arr))) {
 454
 455                                 // One or more FB folks were denied access but nobody on FB was specifically allowed access.
 456                                 // This might cause the post to be open to public on Facebook, but only to selected members
 457                                 // on another network. Since this could potentially leak a post to somebody who was denied,
 458                                 // we will skip posting it to Facebook with a slightly vague but relevant message that will
 459                                 // hopefully lead somebody to this code comment for a better explanation of what went wrong.
 460
 461                                 notice( t('Post to Facebook cancelled because of multi-network access permission conflict.') . EOL);
 462                                 return;
 463                         }
 464
 465
 466                         // if it's a private message but no Facebook members are allowed or denied, skip Facebook post
 467
 468                         if((! count($allow_arr)) && (! count($deny_arr)))
 469                                 return;
 470                 }
 471
 472                 if($b['verb'] == ACTIVITY_LIKE)
 473                         $likes = true;
 474
 475
 476                 $appid  = get_config('facebook', 'appid'  );
 477                 $secret = get_config('facebook', 'appsecret' );
 478
 479                 if($appid && $secret) {
 480
 481                         logger('facebook: have appid+secret');
 482
 483                         $fb_token  = get_pconfig($b['uid'],'facebook','access_token');
 484
 485
 486                         // post to facebook if it's a public post and we've ticked the 'post to Facebook' box,
 487                         // or it's a private message with facebook participants
 488                         // or it's a reply or likes action to an existing facebook post
 489
 490                         if($fb_token && ($toplevel || $b['private'] || $reply)) {
 491                                 logger('facebook: able to post');
 492                                 require_once('library/facebook.php');
 493                                 require_once('include/bbcode.php');
 494
 495                                 $msg = $b['body'];
 496
 497                                 logger('Facebook post: original msg=' . $msg, LOGGER_DATA);
 498
 499                                 // make links readable before we strip the code
 500
 501                                 // unless it's a dislike - just send the text as a comment
 502
 503                                 // if($b['verb'] == ACTIVITY_DISLIKE)
 504                                 //      $msg = trim(strip_tags(bbcode($msg)));
 505
 506                                 // Looking for the first image
 507                                 $image = '';
 508                                 if(preg_match("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/is",$b['body'],$matches))
 509                                         $image = $matches[3];
 510
 511                                 if ($image == '')
 512                                         if(preg_match("/\[img\](.*?)\[\/img\]/is",$b['body'],$matches))
 513                                                 $image = $matches[1];
 514
 515                                 // When saved into the database the content is sent through htmlspecialchars
 516                                 // That means that we have to decode all image-urls
 517                                 $image = htmlspecialchars_decode($image);
 518
 519                                 // Checking for a bookmark element
 520                                 $body = $b['body'];
 521                                 if (strpos($body, "[bookmark") !== false) {
 522                                         // splitting the text in two parts:
 523                                         // before and after the bookmark
 524                                         $pos = strpos($body, "[bookmark");
 525                                         $body1 = substr($body, 0, $pos);
 526                                         $body2 = substr($body, $pos);
 527
 528                                         // Removing the bookmark and all quotes after the bookmark
 529                                         // they are mostly only the content after the bookmark.
 530                                         $body2 = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism",'',$body2);
 531                                         $body2 = preg_replace("/\[quote\=([^\]]*)\](.*?)\[\/quote\]/ism",'',$body2);
 532                                         $body2 = preg_replace("/\[quote\](.*?)\[\/quote\]/ism",'',$body2);
 533
 534                                         $body = $body1.$body2;
 535                                 }
 536
 537                                 // Convert recycle signs
 538                                 $body = str_replace("\t", " ", $body);
 539                                 // recycle 1
 540                                 //$recycle = html_entity_decode("&#x2672; ", ENT_QUOTES, 'UTF-8');
 541                                 //$body = preg_replace( '/'.$recycle.'\[url\=(\w+.*?)\](\w+.*?)\[\/url\]/i', "\n\t$2:\t", $body);
 542
 543                                 $body = str_replace("\t", "", $body);
 544
 545                                 // At first convert the text to html
 546                                 $html = bbcode($body, false, false, 2);
 547
 548                                 // Then convert it to plain text
 549                                 $msg = trim($b['title']." \n\n".html2plain($html, 0, true));
 550
 551                                 // Removing useless spaces
 552                                 if (substr($msg, -2) == "«")
 553                                         $msg = trim(substr($msg, 0, -2))."«";
 554
 555                                 $msg = html_entity_decode($msg,ENT_QUOTES,'UTF-8');
 556
 557                                 // Removing multiple newlines
 558                                 while (strpos($msg, "\n\n\n") !== false)
 559                                         $msg = str_replace("\n\n\n", "\n\n", $msg);
 560
 561                                 // add any attachments as text urls
 562                                 $arr = explode(',',$b['attach']);
 563
 564                                 if(count($arr)) {
 565                                         $msg .= "\n";
 566                                         foreach($arr as $r) {
 567                                                 $matches = false;
 568                                                 $cnt = preg_match('|\[attach\]href=\"(.*?)\" size=\"(.*?)\" type=\"(.*?)\" title=\"(.*?)\"\[\/attach\]|',$r,$matches);
 569                                                 if($cnt) {
 570                                                         $msg .= "\n".$matches[1];
 571                                                 }
 572                                         }
 573                                 }
 574
 575                                 $link = '';
 576                                 $linkname = '';
 577                                 // look for bookmark-bbcode and handle it with priority
 578                                 if(preg_match("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/is",$b['body'],$matches)) {
 579                                         $link = $matches[1];
 580                                         $linkname = $matches[2];
 581                                 }
 582
 583                                 // If there is no bookmark element then take the first link
 584                                 if ($link == '') {
 585                                         $links = collecturls($html);
 586                                         if (sizeof($links) > 0) {
 587                                                 reset($links);
 588                                                 $link = current($links);
 589                                         }
 590                                 }
 591
 592                                 // Remove trailing and leading spaces
 593                                 $msg = trim($msg);
 594
 595
 596                                 // Fallback - if message is empty
 597                                 if(!strlen($msg))
 598                                         $msg = $linkname;
 599
 600                                 if(!strlen($msg))
 601                                         $msg = $link;
 602
 603                                 if(!strlen($msg))
 604                                         $msg = $image;
 605
 606                                 // If there is nothing to post then exit
 607                                 if(!strlen($msg))
 608                                         return;
 609
 610                                 logger('Facebook post: msg=' . $msg, LOGGER_DATA);
 611
 612                                 $video = "";
 613
 614                                 if($likes) {
 615                                         $postvars = array('access_token' => $fb_token);
 616                                 } else {
 617                                         // message, picture, link, name, caption, description, source, place, tags
 618                                         if(trim($link) != "")
 619                                                 if (@exif_imagetype($link) != 0) {
 620                                                         $image = $link;
 621                                                         $link = "";
 622                                                 }
 623
 624                                         $postvars = array(
 625                                                 'access_token' => $fb_token,
 626                                                 'message' => $msg
 627                                         );
 628                                         if(trim($image) != "")
 629                                                 $postvars['picture'] = $image;
 630
 631                                         if(trim($link) != "") {
 632                                                 $postvars['link'] = $link;
 633
 634                                                 if ((stristr($link,'youtube')) || (stristr($link,'youtu.be')) || (stristr($link,'vimeo'))) {
 635                                                         $video = $link;
 636                                                 }
 637                                         }
 638                                         if(trim($linkname) != "")
 639                                                 $postvars['name'] = $linkname;
 640                                 }
 641
 642                                 if(($b['private']) && ($toplevel)) {
 643                                         $postvars['privacy'] = '{"value": "CUSTOM", "friends": "SOME_FRIENDS"';
 644                                         if(count($allow_arr))
 645                                                 $postvars['privacy'] .= ',"allow": "' . implode(',',$allow_arr) . '"';
 646                                         if(count($deny_arr))
 647                                                 $postvars['privacy'] .= ',"deny": "' . implode(',',$deny_arr) . '"';
 648                                         $postvars['privacy'] .= '}';
 649
 650                                 }
 651
 652                                 $post_to_page = get_pconfig($b['uid'],'facebook','post_to_page');
 653                                 $page_access_token = get_pconfig($b['uid'],'facebook','page_access_token');
 654                                 if ((intval($post_to_page) != 0) and ($page_access_token != ""))
 655                                         $target = $post_to_page;
 656                                 else
 657                                         $target = "me";
 658
 659                                 if($reply) {
 660                                         $url = 'https://graph.facebook.com/' . $reply . '/' . (($likes) ? 'likes' : 'comments');
 661                                 } else if (($video != "") or (($image == "") and ($link != ""))) {
 662                                         // If it is a link to a video or a link without a preview picture then post it as a link
 663                                         if ($video != "")
 664                                                 $link = $video;
 665
 666                                         $postvars = array(
 667                                                 'access_token' => $fb_token,
 668                                                 'link' => $link,
 669                                         );
 670                                         if ($msg != $video)
 671                                                 $postvars['message'] = $msg;
 672
 673                                         $url = 'https://graph.facebook.com/'.$target.'/links';
 674                                 } else if (($link == "") and ($image != "")) {
 675                                         // If it is only an image without a page link then post this image as a photo
 676                                         $postvars = array(
 677                                                 'access_token' => $fb_token,
 678                                                 'url' => $image,
 679                                         );
 680                                         if ($msg != $image)
 681                                                 $postvars['message'] = $msg;
 682
 683                                         $url = 'https://graph.facebook.com/'.$target.'/photos';
 684                                 } else if (($link != "") or ($image != "") or ($b['title'] == '') or (strlen($msg) < 500)) {
 685                                         $url = 'https://graph.facebook.com/'.$target.'/feed';
 686                                         if (!get_pconfig($b['uid'],'facebook','suppress_view_on_friendica') and $b['plink'])
 687                                                 $postvars['actions'] = '{"name": "' . t('View on Friendica') . '", "link": "' .  $b['plink'] . '"}';
 688                                 } else {
 689                                         // if its only a message and a subject and the message is larger than 500 characters then post it as note
 690                                         $postvars = array(
 691                                                 'access_token' => $fb_token,
 692                                                 'message' => bbcode($b['body'], false, false),
 693                                                 'subject' => $b['title'],
 694                                         );
 695                                         $url = 'https://graph.facebook.com/'.$target.'/notes';
 696                                 }
 697
 698                                 // Post to page?
 699                                 if (!$reply and ($target != "me") and $page_access_token)
 700                                         $postvars['access_token'] = $page_access_token;
 701
 702                                 logger('facebook: post to ' . $url);
 703                                 logger('facebook: postvars: ' . print_r($postvars,true));
 704
 705                                 // "test_mode" prevents anything from actually being posted.
 706                                 // Otherwise, let's do it.
 707
 708                                 if(! get_config('facebook','test_mode')) {
 709                                         $x = post_url($url, $postvars);
 710                                         logger('Facebook post returns: ' . $x, LOGGER_DEBUG);
 711
 712                                         $retj = json_decode($x);
 713                                         if($retj->id) {
 714                                                 q("UPDATE `item` SET `extid` = '%s' WHERE `id` = %d LIMIT 1",
 715                                                         dbesc('fb::' . $retj->id),
 716                                                         intval($b['id'])
 717                                                 );
 718                                         }
 719                                         else {
 720                                                 if(! $likes) {
 721                                                         $s = serialize(array('url' => $url, 'item' => $b['id'], 'post' => $postvars));
 722                                                         require_once('include/queue_fn.php');
 723                                                         add_to_queue($a->contact,NETWORK_FACEBOOK,$s);
 724                                                         notice( t('Facebook post failed. Queued for retry.') . EOL);
 725                                                 }
 726
 727                                                 if (isset($retj->error) && $retj->error->type == "OAuthException" && $retj->error->code == 190) {
 728                                                         logger('Facebook session has expired due to changed password.', LOGGER_DEBUG);
 729
 730                                                         $last_notification = get_pconfig($b['uid'], 'facebook', 'session_expired_mailsent');
 731                                                         if (!$last_notification || $last_notification < (time() - FACEBOOK_SESSION_ERR_NOTIFICATION_INTERVAL)) {
 732                                                                 require_once('include/enotify.php');
 733
 734                                                                 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1", intval($b['uid']) );
 735                                                                 notification(array(
 736                                                                         'uid' => $b['uid'],
 737                                                                         'type' => NOTIFY_SYSTEM,
 738                                                                         'system_type' => 'facebook_connection_invalid',
 739                                                                         'language'     => $r[0]['language'],
 740                                                                         'to_name'      => $r[0]['username'],
 741                                                                         'to_email'     => $r[0]['email'],
 742                                                                         'source_name'  => t('Administrator'),
 743                                                                         'source_link'  => $a->config["system"]["url"],
 744                                                                         'source_photo' => $a->config["system"]["url"] . '/images/person-80.jpg',
 745                                                                 ));
 746
 747                                                                 set_pconfig($b['uid'], 'facebook', 'session_expired_mailsent', time());
 748                                                         } else logger('Facebook: No notification, as the last one was sent on ' . $last_notification, LOGGER_DEBUG);
 749                                                 }
 750                                         }
 751                                 }
 752                         }
 753                 }
 754         }
 755 }
 756
 757 /**
 758  * @param App $app
 759  * @param object $data
 760  */
 761 function fbpost_enotify(&$app, &$data) {
 762         if (x($data, 'params') && $data['params']['type'] == NOTIFY_SYSTEM && x($data['params'], 'system_type') && $data['params']['system_type'] == 'facebook_connection_invalid') {
 763                 $data['itemlink'] = '/facebook';
 764                 $data['epreamble'] = $data['preamble'] = t('Your Facebook connection became invalid. Please Re-authenticate.');
 765                 $data['subject'] = t('Facebook connection became invalid');
 766                 $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]");
 767         }
 768 }
 769
 770 /**
 771  * @param App $a
 772  * @param object $b
 773  */
 774 function fbpost_post_local(&$a,&$b) {
 775
 776         // Figure out if Facebook posting is enabled for this post and file it in 'postopts'
 777         // where we will discover it during background delivery.
 778
 779         // This can only be triggered by a local user posting to their own wall.
 780
 781         if((local_user()) && (local_user() == $b['uid'])) {
 782
 783                 $fb_post   = intval(get_pconfig(local_user(),'facebook','post'));
 784                 $fb_enable = (($fb_post && x($_REQUEST,'facebook_enable')) ? intval($_REQUEST['facebook_enable']) : 0);
 785
 786                 // if API is used, default to the chosen settings
 787                 // but allow a specific override
 788
 789                 if($_REQUEST['api_source'] && intval(get_pconfig(local_user(),'facebook','post_by_default'))) {
 790                         if(! x($_REQUEST,'facebook_enable'))
 791                                 $fb_enable = 1;
 792                 }
 793
 794                 if(! $fb_enable)
 795                         return;
 796
 797                 if(strlen($b['postopts']))
 798                         $b['postopts'] .= ',';
 799                 $b['postopts'] .= 'facebook';
 800         }
 801 }
 802
 803
 804 /**
 805  * @param App $a
 806  * @param object $b
 807  */
 808 function fbpost_queue_hook(&$a,&$b) {
 809
 810         $qi = q("SELECT * FROM `queue` WHERE `network` = '%s'",
 811                 dbesc(NETWORK_FACEBOOK)
 812         );
 813         if(! count($qi))
 814                 return;
 815
 816         require_once('include/queue_fn.php');
 817
 818         foreach($qi as $x) {
 819                 if($x['network'] !== NETWORK_FACEBOOK)
 820                         continue;
 821
 822                 logger('facebook_queue: run');
 823
 824                 $r = q("SELECT `user`.* FROM `user` LEFT JOIN `contact` on `contact`.`uid` = `user`.`uid`
 825                         WHERE `contact`.`self` = 1 AND `contact`.`id` = %d LIMIT 1",
 826                         intval($x['cid'])
 827                 );
 828                 if(! count($r))
 829                         continue;
 830
 831                 $user = $r[0];
 832
 833                 $appid  = get_config('facebook', 'appid'  );
 834                 $secret = get_config('facebook', 'appsecret' );
 835
 836                 if($appid && $secret) {
 837                         $fb_post   = intval(get_pconfig($user['uid'],'facebook','post'));
 838                         $fb_token  = get_pconfig($user['uid'],'facebook','access_token');
 839
 840                         if($fb_post && $fb_token) {
 841                                 logger('facebook_queue: able to post');
 842                                 require_once('library/facebook.php');
 843
 844                                 $z = unserialize($x['content']);
 845                                 $item = $z['item'];
 846                                 $j = post_url($z['url'],$z['post']);
 847
 848                                 $retj = json_decode($j);
 849                                 if($retj->id) {
 850                                         q("UPDATE `item` SET `extid` = '%s' WHERE `id` = %d LIMIT 1",
 851                                                 dbesc('fb::' . $retj->id),
 852                                                 intval($item)
 853                                         );
 854                                         logger('facebook_queue: success: ' . $j);
 855                                         remove_queue_item($x['id']);
 856                                 }
 857                                 else {
 858                                         logger('facebook_queue: failed: ' . $j);
 859                                         update_queue_time($x['id']);
 860                                 }
 861                         }
 862                 }
 863         }
 864 }
 865
 866
 867 /**
 868  * @return bool|string
 869  */
 870 function fbpost_get_app_access_token() {
 871
 872         $acc_token = get_config('facebook','app_access_token');
 873
 874         if ($acc_token !== false) return $acc_token;
 875
 876         $appid = get_config('facebook','appid');
 877         $appsecret = get_config('facebook', 'appsecret');
 878
 879         if ($appid === false || $appsecret === false) {
 880                 logger('fb_get_app_access_token: appid and/or appsecret not set', LOGGER_DEBUG);
 881                 return false;
 882         }
 883         logger('https://graph.facebook.com/oauth/access_token?client_id=' . $appid . '&client_secret=' . $appsecret . '&grant_type=client_credentials', LOGGER_DATA);
 884         $x = fetch_url('https://graph.facebook.com/oauth/access_token?client_id=' . $appid . '&client_secret=' . $appsecret . '&grant_type=client_credentials');
 885
 886         if(strpos($x,'access_token=') !== false) {
 887                 logger('fb_get_app_access_token: returned access token: ' . $x, LOGGER_DATA);
 888
 889                 $token = str_replace('access_token=', '', $x);
 890                 if(strpos($token,'&') !== false)
 891                         $token = substr($token,0,strpos($token,'&'));
 892
 893                 if ($token == "") {
 894                         logger('fb_get_app_access_token: empty token: ' . $x, LOGGER_DEBUG);
 895                         return false;
 896                 }
 897                 set_config('facebook','app_access_token',$token);
 898                 return $token;
 899         } else {
 900                 logger('fb_get_app_access_token: response did not contain an access_token: ' . $x, LOGGER_DATA);
 901                 return false;
 902         }
 903 }
 904
 905 function fbpost_cron($a,$b) {
 906         $last = get_config('facebook','last_poll');
 907
 908         $poll_interval = intval(get_config('facebook','poll_interval'));
 909         if(! $poll_interval)
 910                 $poll_interval = FACEBOOK_DEFAULT_POLL_INTERVAL;
 911
 912         if($last) {
 913                 $next = $last + ($poll_interval * 60);
 914                 if($next > time()) {
 915                         logger('facebook: poll intervall not reached');
 916                         return;
 917                 }
 918         }
 919         logger('facebook: cron_start');
 920
 921         $r = q("SELECT * FROM `pconfig` WHERE `cat` = 'facebook' AND `k` = 'mirror_posts' AND `v` = '1' ORDER BY RAND() ");
 922         if(count($r)) {
 923                 foreach($r as $rr) {
 924                         logger('facebook: fetching for user '.$rr['uid']);
 925                         fbpost_fetchwall($a, $rr['uid']);
 926                 }
 927         }
 928
 929         logger('facebook: cron_end');
 930
 931         set_config('facebook','last_poll', time());
 932 }
 933
 934 function fbpost_fetchwall($a, $uid) {
 935         $access_token = get_pconfig($uid,'facebook','access_token');
 936         $post_to_page = get_pconfig($uid,'facebook','post_to_page');
 937         $lastcreated = get_pconfig($uid,'facebook','last_created');
 938
 939         if ((int)$post_to_page == 0)
 940                 $post_to_page = "me";
 941
 942         $url = "https://graph.facebook.com/".$post_to_page."/feed?access_token=".$access_token;
 943
 944         $first_time = ($lastcreated == "");
 945
 946         if ($lastcreated != "")
 947                 $url .= "&since=".urlencode($lastcreated);
 948
 949         $feed = fetch_url($url);
 950         $data = json_decode($feed);
 951
 952         if (!is_array($data->data))
 953                 return;
 954
 955         $items = array_reverse($data->data);
 956
 957         foreach ($items as $item) {
 958                 if ($item->created_time > $lastcreated)
 959                         $lastcreated = $item->created_time;
 960
 961                 if ($first_time)
 962                         continue;
 963
 964                 if ($item->application->id == get_config('facebook','appid'))
 965                         continue;
 966
 967                 if(isset($item->privacy) && ($item->privacy->value !== 'EVERYONE') && ($item->privacy->value !== ''))
 968                         continue;
 969
 970                 if (($post_to_page != $item->from->id) AND ((int)$post_to_page != 0))
 971                         continue;
 972
 973                 $_SESSION["authenticated"] = true;
 974                 $_SESSION["uid"] = $uid;
 975
 976                 unset($_REQUEST);
 977                 $_REQUEST["type"] = "wall";
 978                 $_REQUEST["api_source"] = true;
 979                 $_REQUEST["profile_uid"] = $uid;
 980                 $_REQUEST["source"] = "Facebook";
 981
 982                 $_REQUEST["title"] = "";
 983
 984                 $_REQUEST["body"] = (isset($item->message) ? escape_tags($item->message) : '');
 985
 986                 if(isset($item->name) and isset($item->link))
 987                         $_REQUEST["body"] .= "\n\n[bookmark=".$item->link."]".$item->name."[/bookmark]";
 988                 elseif (isset($item->name))
 989                         $_REQUEST["body"] .= "\n\n[b]" . $item->name."[/b]";
 990
 991                 /*if(isset($item->caption)) {
 992                         if(!isset($item->name) and isset($item->link))
 993                                 $_REQUEST["body"] .= "\n\n[bookmark=".$item->link."]".$item->caption."[/bookmark]";
 994                         //else
 995                         //      $_REQUEST["body"] .= "[i]" . $item->caption."[/i]\n";
 996                         }
 997
 998                         if(!isset($item->caption) and !isset($item->name)) {
 999                                 if (isset($item->link))
1000                                         $_REQUEST["body"] .= "\n[url]".$item->link."[/url]\n";
1001                                 else
1002                                         $_REQUEST["body"] .= "\n";
1003                 }*/
1004
1005                 $quote = "";
1006                 if(isset($item->description) and ($item->type != "photo"))
1007                         $quote = $item->description;
1008
1009                 if(isset($item->caption) and ($item->type == "photo"))
1010                         $quote = $item->caption;
1011
1012                 //if (isset($item->properties))
1013                 //      foreach ($item->properties as $property)
1014                 //              $quote .= "\n".$property->name.": [url=".$property->href."]".$property->text."[/url]";
1015
1016                 if ($quote)
1017                         $_REQUEST["body"] .= "\n[quote]".$quote."[/quote]";
1018
1019                 // Only import the picture when the message is no video
1020                 // oembed display a picture of the video as well
1021                 if ($item->type != "video") {
1022                 //if (($item->type != "video") and ($item->type != "photo")) {
1023                         if(isset($item->picture) && isset($item->link))
1024                                 $_REQUEST["body"] .= "\n".'[url='.$item->link.'][img]'.fpost_cleanpicture($item->picture).'[/img][/url]';
1025                         else {
1026                                 if (isset($item->picture))
1027                                         $_REQUEST["body"] .= "\n".'[img]'.fpost_cleanpicture($item->picture).'[/img]';
1028                                 // if just a link, it may be a wall photo - check
1029                                 if(isset($item->link))
1030                                         $_REQUEST["body"] .= fbpost_get_photo($uid,$item->link);
1031                         }
1032                 }
1033
1034                 /*if (($datarray['app'] == "Events") and isset($item->actions))
1035                         foreach ($item->actions as $action)
1036                                 if ($action->name == "View")
1037                                         $_REQUEST["body"] .= " [url=".$action->link."]".$item->story."[/url]";
1038                 */
1039
1040                 if(trim($_REQUEST["body"]) == '') {
1041                         logger('facebook: empty body '.$item->id.' '.print_r($item, true));
1042                         continue;
1043                 }
1044
1045                 $_REQUEST["body"] = trim($_REQUEST["body"]);
1046
1047                 if (isset($item->place)) {
1048                         if ($item->place->name or $item->place->location->street or
1049                                 $item->place->location->city or $item->place->location->country) {
1050                                 $_REQUEST["location"] = '';
1051                                 if ($item->place->name)
1052                                         $_REQUEST["location"] .= $item->place->name;
1053                                 if ($item->place->location->street)
1054                                         $_REQUEST["location"] .= " ".$item->place->location->street;
1055                                 if ($item->place->location->city)
1056                                         $_REQUEST["location"] .= " ".$item->place->location->city;
1057                                 if ($item->place->location->country)
1058                                         $_REQUEST["location"] .= " ".$item->place->location->country;
1059
1060                                 $_REQUEST["location"] = trim($_REQUEST["location"]);
1061                         }
1062                         if ($item->place->location->latitude and $item->place->location->longitude)
1063                                 $_REQUEST["coord"] = substr($item->place->location->latitude, 0, 8)
1064                                                 .' '.substr($item->place->location->longitude, 0, 8);
1065                 }
1066
1067                 //print_r($_REQUEST);
1068                 logger('facebook: posting for user '.$uid);
1069
1070                 require_once('mod/item.php');
1071                 item_post($a);
1072         }
1073
1074         set_pconfig($uid,'facebook','last_created', $lastcreated);
1075 }
1076
1077 function fbpost_get_photo($uid,$link) {
1078         $access_token = get_pconfig($uid,'facebook','access_token');
1079         if(! $access_token || (! stristr($link,'facebook.com/photo.php')))
1080                 return "";
1081
1082         $ret = preg_match('/fbid=([0-9]*)/',$link,$match);
1083         if($ret)
1084                 $photo_id = $match[1];
1085         else
1086                 return "";
1087
1088         $x = fetch_url('https://graph.facebook.com/'.$photo_id.'?access_token='.$access_token);
1089         $j = json_decode($x);
1090         if($j->picture)
1091                 return "\n\n".'[url='.$link.'][img]'.fpost_cleanpicture($j->picture).'[/img][/url]';
1092
1093         return "";
1094 }
1095
1096 function fpost_cleanpicture($image) {
1097
1098         if (strpos($image, ".fbcdn.net/") and (substr($image, -6) == "_s.jpg"))
1099                 $image = substr($image, 0, -6)."_n.jpg";
1100
1101         $queryvar = fbpost_parse_query($image);
1102         if ($queryvar['url'] != "")
1103                 $image = urldecode($queryvar['url']);
1104
1105         return $image;
1106 }
1107
1108 function fbpost_parse_query($var) {
1109         /**
1110          *  Use this function to parse out the query array element from
1111          *  the output of parse_url().
1112         */
1113         $var  = parse_url($var, PHP_URL_QUERY);
1114         $var  = html_entity_decode($var);
1115         $var  = explode('&', $var);
1116         $arr  = array();
1117
1118         foreach($var as $val) {
1119                 $x          = explode('=', $val);
1120                 $arr[$x[0]] = $x[1];
1121         }
1122
1123         unset($val, $x, $var);
1124         return $arr;
1125 }