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                 $value = ((x($_POST,'post_by_default')) ? intval($_POST['post_by_default']) : 0);
 138                 set_pconfig($uid,'facebook','post_by_default', $value);
 139
 140                 $value = ((x($_POST,'mirror_posts')) ? intval($_POST['mirror_posts']) : 0);
 141                 set_pconfig($uid,'facebook','mirror_posts', $value);
 142
 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);
 145
 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]);
 150
 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']));
 155                 }
 156
 157                 info( t('Settings updated.') . EOL);
 158         }
 159
 160         return;
 161 }
 162
 163 // Facebook settings form
 164
 165 /**
 166  * @param App $a
 167  * @return string
 168  */
 169 function fbpost_content(&$a) {
 170
 171         if(! local_user()) {
 172                 notice( t('Permission denied.') . EOL);
 173                 return '';
 174         }
 175
 176
 177         if(! service_class_allows(local_user(),'facebook_connect')) {
 178                 notice( t('Permission denied.') . EOL);
 179                 return upgrade_bool_message();
 180         }
 181
 182
 183         if($a->argc > 1 && $a->argv[1] === 'remove') {
 184                 del_pconfig(local_user(),'facebook','post');
 185                 info( t('Facebook Post disabled') . EOL);
 186         }
 187
 188         require_once("mod/settings.php");
 189         settings_init($a);
 190
 191         $o = '';
 192         $accounts = array();
 193
 194         $fb_installed = false;
 195         if (get_pconfig(local_user(),'facebook','post')) {
 196                 $access_token = get_pconfig(local_user(),'facebook','access_token');
 197                 if ($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, $redirects, 10);
 202                         if($s) {
 203                                 $accounts = json_decode($s);
 204                                 if (isset($accounts->data))
 205                                         $fb_installed = true;
 206                         }
 207
 208                         // I'm not totally sure, if this above will work in every situation,
 209                         // So this old code will be called as well.
 210                         if (!$fb_installed) {
 211                                 $url ="https://graph.facebook.com/me/feed";
 212                                 $s = fetch_url($url."?access_token=".$access_token."&limit=1", false, $redirects, 10);
 213                                 if($s) {
 214                                         $j = json_decode($s);
 215                                         if (isset($j->data))
 216                                                 $fb_installed = true;
 217                                 }
 218                         }
 219                 }
 220         }
 221
 222         $appid = get_config('facebook','appid');
 223
 224         if(! $appid) {
 225                 notice( t('Facebook API key is missing.') . EOL);
 226                 return '';
 227         }
 228
 229         $a->page['htmlhead'] .= '<link rel="stylesheet" type="text/css" href="'
 230                 . $a->get_baseurl() . '/addon/fbpost/fbpost.css' . '" media="all" />' . "\r\n";
 231
 232         $result = q("SELECT `installed` FROM `addon` WHERE `name` = 'fbsync' AND `installed`");
 233         $fbsync = (count($result) > 0);
 234
 235         if($fbsync)
 236                 $title = t('Facebook Import/Export/Mirror');
 237         else
 238                 $title = t('Facebook Export/Mirror');
 239
 240         $o .= '<img class="connector" src="images/facebook.png" /><h3 class="connector">'.$title.'</h3>';
 241
 242         if(! $fb_installed) {
 243                 $o .= '<div id="fbpost-enable-wrapper">';
 244
 245                 //read_stream,publish_stream,manage_pages,photo_upload,user_groups,offline_access
 246
 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>';
 249                 $o .= '</div>';
 250         }
 251
 252         if($fb_installed) {
 253                 $o .= '<div id="fbpost-disable-wrapper">';
 254
 255                 $o .= '<a href="' . $a->get_baseurl() . '/fbpost/remove' . '">' . t('Remove Facebook Post connector') . '</a></div>';
 256
 257                 $o .= '<div id="fbpost-enable-wrapper">';
 258
 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>';
 261                 $o .= '</div>';
 262
 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;
 268
 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;
 272
 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;
 276
 277                 // List all pages
 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);
 284
 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>";
 288                 else
 289                         $o .= "<option value='0-0'>".t('None')."</option>";
 290
 291                 foreach($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>";
 295                                 else
 296                                         $o .= "<option value='".$account->id."-".$account->access_token."'>".$account->name."</option>";
 297                 }
 298
 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);
 302
 303                 foreach($groups->data as $group) {
 304                         if ($post_to_page == $group->id)
 305                                 $o .= "<option value='".$group->id."-0' selected>".$group->name."</option>";
 306                         else
 307                                 $o .= "<option value='".$group->id."-0'>".$group->name."</option>";
 308                 }
 309
 310                 $o .= "</select>";
 311
 312                 if ($fbsync) {
 313
 314                         $o .= '<div class="clear"></div>';
 315
 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;
 319
 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;
 323
 324                 }
 325                 $o .= '<p><input type="submit" name="submit" value="' . t('Save Settings') . '" /></form></div>';
 326         }
 327
 328         return $o;
 329 }
 330
 331 /**
 332  * @param App $a
 333  * @param null|object $b
 334  */
 335 function fbpost_plugin_settings(&$a,&$b) {
 336
 337         $enabled = get_pconfig(local_user(),'facebook','post');
 338         $css = (($enabled) ? '' : '-disabled');
 339
 340         $result = q("SELECT `installed` FROM `addon` WHERE `name` = 'fbsync' AND `installed`");
 341         if(count($result) > 0)
 342                 $title = t('Facebook Import/Export/Mirror');
 343         else
 344                 $title = t('Facebook Export/Mirror');
 345
 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>';
 348         $b .= '</div>';
 349 }
 350
 351
 352 /**
 353  * @param App $a
 354  * @param null|object $o
 355  */
 356 function fbpost_plugin_admin(&$a, &$o){
 357
 358
 359         $o = '<input type="hidden" name="form_security_token" value="' . get_form_security_token("fbsave") . '">';
 360
 361         $o .= '<h4>' . t('Facebook API Key') . '</h4>';
 362
 363         $appid  = get_config('facebook', 'appid'  );
 364         $appsecret = get_config('facebook', 'appsecret' );
 365
 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>');
 369
 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;">';
 372
 373         $o .= '<input type="submit" name="fb_save_keys" value="' . t('Save') . '">';
 374
 375 }
 376
 377 /**
 378  * @param App $a
 379  */
 380
 381 function fbpost_plugin_admin_post(&$a){
 382         check_form_security_token_redirectOnErr('/admin/plugins/fbpost', 'fbsave');
 383
 384         if (x($_REQUEST,'fb_save_keys')) {
 385                 set_config('facebook', 'appid', $_REQUEST['appid']);
 386                 set_config('facebook', 'appsecret', $_REQUEST['appsecret']);
 387
 388                 info(t('The new values have been saved.'));
 389         }
 390
 391 }
 392
 393 /**
 394  * @param App $a
 395  * @param object $b
 396  * @return mixed
 397  */
 398 function fbpost_jot_nets(&$a,&$b) {
 399         if(! local_user())
 400                 return;
 401
 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>';
 408         }
 409 }
 410
 411 /**
 412  * @param App $a
 413  * @param object $b
 414  * @return mixed
 415  */
 416 function fbpost_post_hook(&$a,&$b) {
 417
 418         logger('fbpost_post_hook: Facebook post invoked', LOGGER_DEBUG);
 419
 420         if($b['deleted'] || ($b['created'] !== $b['edited']))
 421                 return;
 422
 423         logger('fbpost_post_hook: Facebook post first check successful', LOGGER_DEBUG);
 424
 425         // if post comes from facebook don't send it back
 426         if(($b['app'] == "Facebook") AND ($b['verb'] != ACTIVITY_LIKE))
 427                 return;
 428
 429         logger('fbpost_post_hook: Facebook post accepted', LOGGER_DEBUG);
 430
 431         /**
 432          * Post to Facebook stream
 433          */
 434
 435         require_once('include/group.php');
 436         require_once('include/html2plain.php');
 437
 438
 439         $reply = false;
 440         $likes = false;
 441
 442         $deny_arr = array();
 443         $allow_arr = array();
 444
 445         $toplevel = (($b['id'] == $b['parent']) ? true : false);
 446
 447
 448         $linking = ((get_pconfig($b['uid'],'facebook','no_linking')) ? 0 : 1);
 449
 450         if((!$toplevel) && ($linking)) {
 451                 $r = q("SELECT * FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
 452                         intval($b['parent']),
 453                         intval($b['uid'])
 454                 );
 455                 //$r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 456                 //      dbesc($b['parent-uri']),
 457                 //      intval($b['uid'])
 458                 //);
 459
 460                 // is it a reply to a facebook post?
 461                 // A reply to a toplevel post is only allowed for "real" facebook posts
 462                 if(count($r) && substr($r[0]['uri'],0,4) === 'fb::')
 463                         $reply = substr($r[0]['uri'],4);
 464                 elseif(count($r) && (substr($r[0]['extid'],0,4) === 'fb::') AND ($r[0]['id'] != $r[0]['parent']))
 465                         $reply = substr($r[0]['extid'],4);
 466                 else
 467                         return;
 468
 469                 $u = q("SELECT * FROM user where uid = %d limit 1",
 470                         intval($b['uid'])
 471                 );
 472                 if(! count($u))
 473                         return;
 474
 475                 // only accept comments from the item owner. Other contacts are unknown to FB.
 476
 477                 if(! link_compare($b['author-link'], $a->get_baseurl() . '/profile/' . $u[0]['nickname']))
 478                         return;
 479
 480
 481                 logger('fbpost_post_hook: facebook reply id=' . $reply);
 482         }
 483
 484         if(strstr($b['postopts'],'facebook') || ($b['private']) || ($reply)) {
 485
 486                 if($b['private'] && $reply === false) {
 487                         $allow_people = expand_acl($b['allow_cid']);
 488                         $allow_groups = expand_groups(expand_acl($b['allow_gid']));
 489                         $deny_people  = expand_acl($b['deny_cid']);
 490                         $deny_groups  = expand_groups(expand_acl($b['deny_gid']));
 491
 492                         $recipients = array_unique(array_merge($allow_people,$allow_groups));
 493                         $deny = array_unique(array_merge($deny_people,$deny_groups));
 494
 495                         $allow_str = dbesc(implode(', ',$recipients));
 496                         if($allow_str) {
 497                                 logger("fbpost_post_hook: private post to: ".$allow_str, LOGGER_DEBUG);
 498                                 $r = q("SELECT `notify` FROM `contact` WHERE `id` IN ( $allow_str ) AND `network` = 'face'");
 499                                 if(count($r))
 500                                         foreach($r as $rr)
 501                                                 $allow_arr[] = $rr['notify'];
 502                         }
 503
 504                         $deny_str = dbesc(implode(', ',$deny));
 505                         if($deny_str) {
 506                                 $r = q("SELECT `notify` FROM `contact` WHERE `id` IN ( $deny_str ) AND `network` = 'face'");
 507                                 if(count($r))
 508                                         foreach($r as $rr)
 509                                                 $deny_arr[] = $rr['notify'];
 510                         }
 511
 512                         if(count($deny_arr) && (! count($allow_arr))) {
 513
 514                                 // One or more FB folks were denied access but nobody on FB was specifically allowed access.
 515                                 // This might cause the post to be open to public on Facebook, but only to selected members
 516                                 // on another network. Since this could potentially leak a post to somebody who was denied,
 517                                 // we will skip posting it to Facebook with a slightly vague but relevant message that will
 518                                 // hopefully lead somebody to this code comment for a better explanation of what went wrong.
 519
 520                                 notice( t('Post to Facebook cancelled because of multi-network access permission conflict.') . EOL);
 521                                 return;
 522                         }
 523
 524
 525                         // if it's a private message but no Facebook members are allowed or denied, skip Facebook post
 526
 527                         if((! count($allow_arr)) && (! count($deny_arr)))
 528                                 return;
 529                 }
 530
 531                 if($b['verb'] == ACTIVITY_LIKE) {
 532                         $likes = true;
 533                         logger('fbpost_post_hook: liking '.print_r($b, true), LOGGER_DEBUG);
 534                 }
 535
 536
 537                 $appid  = get_config('facebook', 'appid'  );
 538                 $secret = get_config('facebook', 'appsecret' );
 539
 540                 if($appid && $secret) {
 541
 542                         logger('fbpost_post_hook: have appid+secret');
 543
 544                         $fb_token  = get_pconfig($b['uid'],'facebook','access_token');
 545
 546
 547                         // post to facebook if it's a public post and we've ticked the 'post to Facebook' box,
 548                         // or it's a private message with facebook participants
 549                         // or it's a reply or likes action to an existing facebook post
 550
 551                         if($fb_token && ($toplevel || $b['private'] || $reply)) {
 552                                 logger('fbpost_post_hook: able to post');
 553                                 require_once('library/facebook.php');
 554                                 require_once('include/bbcode.php');
 555
 556                                 $msg = $b['body'];
 557
 558                                 logger('fbpost_post_hook: original msg=' . $msg, LOGGER_DATA);
 559
 560                                 if ($toplevel) {
 561                                         require_once("include/plaintext.php");
 562                                         $msgarr = plaintext($a, $b, 0, false);
 563                                         $msg = $msgarr["text"];
 564                                         $link = $msgarr["url"];
 565                                         $image = $msgarr["image"];
 566                                         $linkname = $msgarr["title"];
 567
 568                                         // Fallback - if message is empty
 569                                         if(!strlen($msg))
 570                                                 $msg = $linkname;
 571
 572                                         if(!strlen($msg))
 573                                                 $msg = $link;
 574
 575                                         if(!strlen($msg))
 576                                                 $msg = $image;
 577                                 } else {
 578                                         require_once("include/bbcode.php");
 579                                         require_once("include/html2plain.php");
 580                                         $msg = bb_CleanPictureLinks($msg);
 581                                         $msg = bbcode($msg, false, false, 2, true);
 582                                         $msg = trim(html2plain($msg, 0));
 583                                         $link = "";
 584                                         $image = "";
 585                                         $linkname = "";
 586                                 }
 587
 588                                 // If there is nothing to post then exit
 589                                 if(!strlen($msg))
 590                                         return;
 591
 592                                 logger('fbpost_post_hook: msg=' . $msg, LOGGER_DATA);
 593
 594                                 $video = "";
 595
 596                                 if($likes) {
 597                                         $postvars = array('access_token' => $fb_token);
 598                                 } else {
 599                                         // message, picture, link, name, caption, description, source, place, tags
 600                                         //if(trim($link) != "")
 601                                         //      if (@exif_imagetype($link) != 0) {
 602                                         //              $image = $link;
 603                                         //              $link = "";
 604                                         //      }
 605
 606                                         $postvars = array(
 607                                                 'access_token' => $fb_token,
 608                                                 'message' => $msg
 609                                         );
 610                                         if(trim($image) != "")
 611                                                 $postvars['picture'] = $image;
 612
 613                                         if(trim($link) != "") {
 614                                                 $postvars['link'] = $link;
 615
 616                                                 if ((stristr($link,'youtube')) || (stristr($link,'youtu.be')) || (stristr($link,'vimeo'))) {
 617                                                         $video = $link;
 618                                                 }
 619                                         }
 620                                         if(trim($linkname) != "")
 621                                                 $postvars['name'] = $linkname;
 622                                 }
 623
 624                                 if(($b['private']) && ($toplevel)) {
 625                                         $postvars['privacy'] = '{"value": "CUSTOM", "friends": "SOME_FRIENDS"';
 626                                         if(count($allow_arr))
 627                                                 $postvars['privacy'] .= ',"allow": "' . implode(',',$allow_arr) . '"';
 628                                         if(count($deny_arr))
 629                                                 $postvars['privacy'] .= ',"deny": "' . implode(',',$deny_arr) . '"';
 630                                         $postvars['privacy'] .= '}';
 631
 632                                 }
 633
 634                                 $post_to_page = get_pconfig($b['uid'],'facebook','post_to_page');
 635                                 $page_access_token = get_pconfig($b['uid'],'facebook','page_access_token');
 636                                 if ((intval($post_to_page) != 0) and ($page_access_token != ""))
 637                                         $target = $post_to_page;
 638                                 else
 639                                         $target = "me";
 640
 641                                 if($reply) {
 642                                         $url = 'https://graph.facebook.com/' . $reply . '/' . (($likes) ? 'likes' : 'comments');
 643                                 } else if (($video != "") or (($image == "") and ($link != ""))) {
 644                                         // If it is a link to a video or a link without a preview picture then post it as a link
 645                                         if ($video != "")
 646                                                 $link = $video;
 647
 648                                         $postvars = array(
 649                                                 'access_token' => $fb_token,
 650                                                 'link' => $link,
 651                                         );
 652                                         if ($msg != $video)
 653                                                 $postvars['message'] = $msg;
 654
 655                                         $url = 'https://graph.facebook.com/'.$target.'/links';
 656                                 } else if (($link == "") and ($image != "")) {
 657                                         // If it is only an image without a page link then post this image as a photo
 658                                         $postvars = array(
 659                                                 'access_token' => $fb_token,
 660                                                 'url' => $image,
 661                                         );
 662                                         if ($msg != $image)
 663                                                 $postvars['message'] = $msg;
 664
 665                                         $url = 'https://graph.facebook.com/'.$target.'/photos';
 666                                 } else if (($link != "") or ($image != "") or ($b['title'] == '') or (strlen($msg) < 500)) {
 667                                         $url = 'https://graph.facebook.com/'.$target.'/feed';
 668                                         if (!get_pconfig($b['uid'],'facebook','suppress_view_on_friendica') and $b['plink'])
 669                                                 $postvars['actions'] = '{"name": "' . t('View on Friendica') . '", "link": "' .  $b['plink'] . '"}';
 670                                 } else {
 671                                         // if its only a message and a subject and the message is larger than 500 characters then post it as note
 672                                         $postvars = array(
 673                                                 'access_token' => $fb_token,
 674                                                 'message' => bbcode($b['body'], false, false),
 675                                                 'subject' => $b['title'],
 676                                         );
 677                                         $url = 'https://graph.facebook.com/'.$target.'/notes';
 678                                 }
 679
 680                                 // Post to page?
 681                                 if (!$reply and ($target != "me") and $page_access_token)
 682                                         $postvars['access_token'] = $page_access_token;
 683
 684                                 logger('fbpost_post_hook: post to ' . $url);
 685                                 logger('fbpost_post_hook: postvars: ' . print_r($postvars,true));
 686
 687                                 // "test_mode" prevents anything from actually being posted.
 688                                 // Otherwise, let's do it.
 689
 690                                 if(!get_config('facebook','test_mode')) {
 691                                         $x = post_url($url, $postvars);
 692                                         logger('fbpost_post_hook: post returns: ' . $x, LOGGER_DEBUG);
 693
 694                                         $retj = json_decode($x);
 695                                         if($retj->id) {
 696                                                 // Only set the extid when it isn't the toplevel post
 697                                                 q("UPDATE `item` SET `extid` = '%s' WHERE `id` = %d AND `parent` != %d",
 698                                                         dbesc('fb::' . $retj->id),
 699                                                         intval($b['id']),
 700                                                         intval($b['id'])
 701                                                 );
 702                                         } else {
 703                                                 // Sometimes posts are accepted from facebook although it telling an error
 704                                                 // This leads to endless comment flooding.
 705
 706                                                 // If it is a special kind of failure the post was receiced
 707                                                 // Although facebook said it wasn't received ...
 708                                                 if (!$likes AND (($retj->error->type != "OAuthException") OR ($retj->error->code != 2)) AND ($x <> "")) {
 709                                                         $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `self`", intval($b['uid']));
 710                                                         if (count($r))
 711                                                                 $a->contact = $r[0]["id"];
 712
 713                                                         $s = serialize(array('url' => $url, 'item' => $b['id'], 'post' => $postvars));
 714                                                         require_once('include/queue_fn.php');
 715                                                         add_to_queue($a->contact,NETWORK_FACEBOOK,$s);
 716                                                         logger('fbpost_post_hook: Post failed, requeued.', LOGGER_DEBUG);
 717                                                         notice( t('Facebook post failed. Queued for retry.') . EOL);
 718                                                 }
 719
 720                                                 if (isset($retj->error) && $retj->error->type == "OAuthException" && $retj->error->code == 190) {
 721                                                         logger('fbpost_post_hook: Facebook session has expired due to changed password.', LOGGER_DEBUG);
 722
 723                                                         $last_notification = get_pconfig($b['uid'], 'facebook', 'session_expired_mailsent');
 724                                                         if (!$last_notification || $last_notification < (time() - FACEBOOK_SESSION_ERR_NOTIFICATION_INTERVAL)) {
 725                                                                 require_once('include/enotify.php');
 726
 727                                                                 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1", intval($b['uid']));
 728                                                                 notification(array(
 729                                                                         'uid' => $b['uid'],
 730                                                                         'type' => NOTIFY_SYSTEM,
 731                                                                         'system_type' => 'facebook_connection_invalid',
 732                                                                         'language'     => $r[0]['language'],
 733                                                                         'to_name'      => $r[0]['username'],
 734                                                                         'to_email'     => $r[0]['email'],
 735                                                                         'source_name'  => t('Administrator'),
 736                                                                         'source_link'  => $a->config["system"]["url"],
 737                                                                         'source_photo' => $a->config["system"]["url"] . '/images/person-80.jpg',
 738                                                                 ));
 739
 740                                                                 set_pconfig($b['uid'], 'facebook', 'session_expired_mailsent', time());
 741                                                         } else logger('fbpost_post_hook: No notification, as the last one was sent on ' . $last_notification, LOGGER_DEBUG);
 742                                                 }
 743                                         }
 744                                 }
 745                         }
 746                 }
 747         }
 748 }
 749
 750 /**
 751  * @param App $app
 752  * @param object $data
 753  */
 754 function fbpost_enotify(&$app, &$data) {
 755         if (x($data, 'params') && $data['params']['type'] == NOTIFY_SYSTEM && x($data['params'], 'system_type') && $data['params']['system_type'] == 'facebook_connection_invalid') {
 756                 $data['itemlink'] = '/fbpost';
 757                 $data['epreamble'] = $data['preamble'] = t('Your Facebook connection became invalid. Please Re-authenticate.');
 758                 $data['subject'] = t('Facebook connection became invalid');
 759                 $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]");
 760         }
 761 }
 762
 763 /**
 764  * @param App $a
 765  * @param object $b
 766  */
 767 function fbpost_post_local(&$a,&$b) {
 768
 769         // Figure out if Facebook posting is enabled for this post and file it in 'postopts'
 770         // where we will discover it during background delivery.
 771
 772         // This can only be triggered by a local user posting to their own wall.
 773
 774         if((local_user()) && (local_user() == $b['uid'])) {
 775
 776                 $fb_post   = intval(get_pconfig(local_user(),'facebook','post'));
 777                 $fb_enable = (($fb_post && x($_REQUEST,'facebook_enable')) ? intval($_REQUEST['facebook_enable']) : 0);
 778
 779                 // if API is used, default to the chosen settings
 780                 // but allow a specific override
 781
 782                 if($_REQUEST['api_source'] && intval(get_pconfig(local_user(),'facebook','post_by_default'))) {
 783                         if(! x($_REQUEST,'facebook_enable'))
 784                                 $fb_enable = 1;
 785                 }
 786
 787                 if(! $fb_enable)
 788                         return;
 789
 790                 if(strlen($b['postopts']))
 791                         $b['postopts'] .= ',';
 792                 $b['postopts'] .= 'facebook';
 793         }
 794 }
 795
 796
 797 /**
 798  * @param App $a
 799  * @param object $b
 800  */
 801 function fbpost_queue_hook(&$a,&$b) {
 802
 803         $qi = q("SELECT * FROM `queue` WHERE `network` = '%s'",
 804                 dbesc(NETWORK_FACEBOOK)
 805         );
 806         if(! count($qi))
 807                 return;
 808
 809         require_once('include/queue_fn.php');
 810
 811         foreach($qi as $x) {
 812                 if($x['network'] !== NETWORK_FACEBOOK)
 813                         continue;
 814
 815                 logger('fbpost_queue_hook: run');
 816
 817                 $r = q("SELECT `user`.* FROM `user` LEFT JOIN `contact` on `contact`.`uid` = `user`.`uid`
 818                         WHERE `contact`.`self` = 1 AND `contact`.`id` = %d LIMIT 1",
 819                         intval($x['cid'])
 820                 );
 821                 if(! count($r)) {
 822                         logger('fbpost_queue_hook: no user found for entry '.print_r($x, true));
 823                         update_queue_time($x['id']);
 824                         continue;
 825                 }
 826
 827                 $user = $r[0];
 828
 829                 $appid  = get_config('facebook', 'appid'  );
 830                 $secret = get_config('facebook', 'appsecret' );
 831
 832                 if($appid && $secret) {
 833                         $fb_post   = intval(get_pconfig($user['uid'],'facebook','post'));
 834                         $fb_token  = get_pconfig($user['uid'],'facebook','access_token');
 835
 836                         if($fb_post && $fb_token) {
 837                                 logger('fbpost_queue_hook: able to post');
 838                                 require_once('library/facebook.php');
 839
 840                                 $z = unserialize($x['content']);
 841                                 $item = $z['item'];
 842                                 $j = post_url($z['url'],$z['post']);
 843
 844                                 $retj = json_decode($j);
 845                                 if($retj->id) {
 846                                         // Only set the extid when it isn't the toplevel post
 847                                         q("UPDATE `item` SET `extid` = '%s' WHERE `id` = %d AND `parent` != %d",
 848                                                 dbesc('fb::' . $retj->id),
 849                                                 intval($item),
 850                                                 intval($item)
 851                                         );
 852                                         logger('fbpost_queue_hook: success: ' . $j);
 853                                         remove_queue_item($x['id']);
 854                                 } else {
 855                                         logger('fbpost_queue_hook: failed: ' . $j);
 856
 857                                         // If it is a special kind of failure the post was receiced
 858                                         // Although facebook said it wasn't received ...
 859                                         $ret = json_decode($j);
 860                                         if (($ret->error->type != "OAuthException") OR ($ret->error->code != 2) AND ($j <> ""))
 861                                                 update_queue_time($x['id']);
 862                                         else
 863                                                 logger('fbpost_queue_hook: Not requeued, since it seems to be received');
 864                                 }
 865                         } else {
 866                                 logger('fbpost_queue_hook: No fb_post or fb_token.');
 867                                 update_queue_time($x['id']);
 868                         }
 869                 } else {
 870                         logger('fbpost_queue_hook: No appid or secret.');
 871                         update_queue_time($x['id']);
 872                 }
 873         }
 874 }
 875
 876
 877 /**
 878  * @return bool|string
 879  */
 880 function fbpost_get_app_access_token() {
 881
 882         $acc_token = get_config('facebook','app_access_token');
 883
 884         if ($acc_token !== false) return $acc_token;
 885
 886         $appid = get_config('facebook','appid');
 887         $appsecret = get_config('facebook', 'appsecret');
 888
 889         if ($appid === false || $appsecret === false) {
 890                 logger('fb_get_app_access_token: appid and/or appsecret not set', LOGGER_DEBUG);
 891                 return false;
 892         }
 893         logger('https://graph.facebook.com/oauth/access_token?client_id=' . $appid . '&client_secret=' . $appsecret . '&grant_type=client_credentials', LOGGER_DATA);
 894         $x = fetch_url('https://graph.facebook.com/oauth/access_token?client_id=' . $appid . '&client_secret=' . $appsecret . '&grant_type=client_credentials');
 895
 896         if(strpos($x,'access_token=') !== false) {
 897                 logger('fb_get_app_access_token: returned access token: ' . $x, LOGGER_DATA);
 898
 899                 $token = str_replace('access_token=', '', $x);
 900                 if(strpos($token,'&') !== false)
 901                         $token = substr($token,0,strpos($token,'&'));
 902
 903                 if ($token == "") {
 904                         logger('fb_get_app_access_token: empty token: ' . $x, LOGGER_DEBUG);
 905                         return false;
 906                 }
 907                 set_config('facebook','app_access_token',$token);
 908                 return $token;
 909         } else {
 910                 logger('fb_get_app_access_token: response did not contain an access_token: ' . $x, LOGGER_DATA);
 911                 return false;
 912         }
 913 }
 914
 915 function fbpost_cron($a,$b) {
 916         $last = get_config('facebook','last_poll');
 917
 918         $poll_interval = intval(get_config('facebook','poll_interval'));
 919         if(! $poll_interval)
 920                 $poll_interval = FACEBOOK_DEFAULT_POLL_INTERVAL;
 921
 922         if($last) {
 923                 $next = $last + ($poll_interval * 60);
 924                 if($next > time()) {
 925                         logger('facebook: poll intervall not reached');
 926                         return;
 927                 }
 928         }
 929         logger('facebook: cron_start');
 930
 931         $r = q("SELECT * FROM `pconfig` WHERE `cat` = 'facebook' AND `k` = 'mirror_posts' AND `v` = '1' ORDER BY RAND() ");
 932         if(count($r)) {
 933                 foreach($r as $rr) {
 934                         logger('facebook: fetching for user '.$rr['uid']);
 935                         fbpost_fetchwall($a, $rr['uid']);
 936                 }
 937         }
 938
 939         logger('facebook: cron_end');
 940
 941         set_config('facebook','last_poll', time());
 942 }
 943
 944 function fbpost_fetchwall($a, $uid) {
 945         require_once("include/oembed.php");
 946
 947         $access_token = get_pconfig($uid,'facebook','access_token');
 948         $post_to_page = get_pconfig($uid,'facebook','post_to_page');
 949         $lastcreated = get_pconfig($uid,'facebook','last_created');
 950
 951         if ((int)$post_to_page == 0)
 952                 $post_to_page = "me";
 953
 954         $url = "https://graph.facebook.com/".$post_to_page."/feed?access_token=".$access_token;
 955
 956         $first_time = ($lastcreated == "");
 957
 958         if ($lastcreated != "")
 959                 $url .= "&since=".urlencode($lastcreated);
 960
 961         $feed = fetch_url($url);
 962         $data = json_decode($feed);
 963
 964         if (!is_array($data->data))
 965                 return;
 966
 967         $items = array_reverse($data->data);
 968
 969         foreach ($items as $item) {
 970                 if ($item->created_time > $lastcreated)
 971                         $lastcreated = $item->created_time;
 972
 973                 if ($first_time)
 974                         continue;
 975
 976                 if ($item->application->id == get_config('facebook','appid'))
 977                         continue;
 978
 979                 if(isset($item->privacy) && ($item->privacy->value !== 'EVERYONE') && ($item->privacy->value !== ''))
 980                         continue;
 981
 982                 if (($post_to_page != $item->from->id) AND ((int)$post_to_page != 0))
 983                         continue;
 984
 985                 if (!strstr($item->id, $item->from->id."_") AND isset($item->to) AND ((int)$post_to_page == 0))
 986                         continue;
 987
 988                 $_SESSION["authenticated"] = true;
 989                 $_SESSION["uid"] = $uid;
 990
 991                 unset($_REQUEST);
 992                 $_REQUEST["type"] = "wall";
 993                 $_REQUEST["api_source"] = true;
 994                 $_REQUEST["profile_uid"] = $uid;
 995                 $_REQUEST["source"] = "Facebook";
 996
 997                 $_REQUEST["title"] = "";
 998
 999                 $_REQUEST["body"] = (isset($item->message) ? escape_tags($item->message) : '');
1000
1001                 $content = "";
1002                 $type = "";
1003
1004                 if(isset($item->name) and isset($item->link)) {
1005                         $oembed_data = oembed_fetch_url($item->link);
1006                         $type = $oembed_data->type;
1007                         $content = "[bookmark=".$item->link."]".$item->name."[/bookmark]";
1008                 } elseif (isset($item->name))
1009                         $content .= "[b]".$item->name."[/b]";
1010
1011                 $quote = "";
1012                 if(isset($item->description) and ($item->type != "photo"))
1013                         $quote = $item->description;
1014
1015                 if(isset($item->caption) and ($item->type == "photo"))
1016                         $quote = $item->caption;
1017
1018                 // Only import the picture when the message is no video
1019                 // oembed display a picture of the video as well
1020                 //if ($item->type != "video") {
1021                 //if (($item->type != "video") and ($item->type != "photo")) {
1022                 if (($type == "") OR ($type == "link")) {
1023
1024                         $type = $item->type;
1025
1026                         if(isset($item->picture) && isset($item->link))
1027                                 $content .= "\n".'[url='.$item->link.'][img]'.fpost_cleanpicture($item->picture).'[/img][/url]';
1028                         else {
1029                                 if (isset($item->picture))
1030                                         $content .= "\n".'[img]'.fpost_cleanpicture($item->picture).'[/img]';
1031                                 // if just a link, it may be a wall photo - check
1032                                 if(isset($item->link))
1033                                         $content .= fbpost_get_photo($uid,$item->link);
1034                         }
1035                 }
1036
1037                 if(trim($_REQUEST["body"].$content.$quote) == '') {
1038                         logger('facebook: empty body '.$item->id.' '.print_r($item, true));
1039                         continue;
1040                 }
1041
1042                 if ($content)
1043                         $_REQUEST["body"] .= "\n";
1044
1045                 if ($type)
1046                         $_REQUEST["body"] .= "[class=type-".$type."]";
1047
1048                 if ($content)
1049                         $_REQUEST["body"] .= trim($content);
1050
1051                 if ($quote)
1052                         $_REQUEST["body"] .= "\n[quote]".$quote."[/quote]";
1053
1054                 if ($type)
1055                         $_REQUEST["body"] .= "[/class]";
1056
1057                 $_REQUEST["body"] = trim($_REQUEST["body"]);
1058
1059                 if (isset($item->place)) {
1060                         if ($item->place->name or $item->place->location->street or
1061                                 $item->place->location->city or $item->place->location->country) {
1062                                 $_REQUEST["location"] = '';
1063                                 if ($item->place->name)
1064                                         $_REQUEST["location"] .= $item->place->name;
1065                                 if ($item->place->location->street)
1066                                         $_REQUEST["location"] .= " ".$item->place->location->street;
1067                                 if ($item->place->location->city)
1068                                         $_REQUEST["location"] .= " ".$item->place->location->city;
1069                                 if ($item->place->location->country)
1070                                         $_REQUEST["location"] .= " ".$item->place->location->country;
1071
1072                                 $_REQUEST["location"] = trim($_REQUEST["location"]);
1073                         }
1074                         if ($item->place->location->latitude and $item->place->location->longitude)
1075                                 $_REQUEST["coord"] = substr($item->place->location->latitude, 0, 8)
1076                                                 .' '.substr($item->place->location->longitude, 0, 8);
1077                 }
1078
1079                 //print_r($_REQUEST);
1080                 logger('facebook: posting for user '.$uid);
1081
1082                 require_once('mod/item.php');
1083                 item_post($a);
1084         }
1085
1086         set_pconfig($uid,'facebook','last_created', $lastcreated);
1087 }
1088
1089 function fbpost_get_photo($uid,$link) {
1090         $access_token = get_pconfig($uid,'facebook','access_token');
1091         if(! $access_token || (! stristr($link,'facebook.com/photo.php')))
1092                 return "";
1093
1094         $ret = preg_match('/fbid=([0-9]*)/',$link,$match);
1095         if($ret)
1096                 $photo_id = $match[1];
1097         else
1098                 return "";
1099
1100         $x = fetch_url('https://graph.facebook.com/'.$photo_id.'?access_token='.$access_token);
1101         $j = json_decode($x);
1102         if($j->picture)
1103                 return "\n\n".'[url='.$link.'][img]'.fpost_cleanpicture($j->picture).'[/img][/url]';
1104
1105         return "";
1106 }
1107
1108 function fpost_cleanpicture($image) {
1109
1110         if ((strpos($image, ".fbcdn.net/") OR strpos($image, "/fbcdn-photos-")) and (substr($image, -6) == "_s.jpg"))
1111                 $image = substr($image, 0, -6)."_n.jpg";
1112
1113         $queryvar = fbpost_parse_query($image);
1114         if ($queryvar['url'] != "")
1115                 $image = urldecode($queryvar['url']);
1116
1117         return $image;
1118 }
1119
1120 function fbpost_parse_query($var) {
1121         /**
1122          *  Use this function to parse out the query array element from
1123          *  the output of parse_url().
1124         */
1125         $var  = parse_url($var, PHP_URL_QUERY);
1126         $var  = html_entity_decode($var);
1127         $var  = explode('&', $var);
1128         $arr  = array();
1129
1130         foreach($var as $val) {
1131                 $x          = explode('=', $val);
1132                 $arr[$x[0]] = $x[1];
1133         }
1134
1135         unset($val, $x, $var);
1136         return $arr;
1137 }