addon/facebook/facebook.php

   1 <?php
   2 /**
   3  * Name: Facebook Connector
   4  * Version: 1.0
   5  * Author: Mike Macgirvin <http://macgirvin.com/profile/mike>
   6  */
   7
   8 /**
   9  * Installing the Friendika/Facebook connector
  10  *
  11  * 1. register an API key for your site from developer.facebook.com
  12  *   a. We'd be very happy if you include "Friendika" in the application name
  13  *      to increase name recognition. The Friendika icons are also present
  14  *      in the images directory and may be uploaded as a Facebook app icon.
  15  *      Use images/friendika-16.jpg for the Icon and images/friendika-128.jpg for the Logo.
  16  *   b. The url should be your site URL with a trailing slash.
  17  *      You may use http://portal.friendika.com/privacy as the privacy policy
  18  *      URL unless your site has different requirements, and
  19  *      http://portal.friendika.com as the Terms of Service URL unless
  20  *      you have different requirements. (Friendika is a software application
  21  *      and does not require Terms of Service, though your installation of it might).
  22  *   c. Set the following values in your .htconfig.php file
  23  *         $a->config['facebook']['appid'] = 'xxxxxxxxxxx';
  24  *         $a->config['facebook']['appsecret'] = 'xxxxxxxxxxxxxxx';
  25  *      Replace with the settings Facebook gives you.
  26  *   d. Navigate to Set Web->Site URL & Domain -> Website Settings.  Set
  27  *      Site URL to yoursubdomain.yourdomain.com. Set Site Domain to your
  28  *      yourdomain.com.
  29  * 2. Enable the facebook plugin by including it in .htconfig.php - e.g.
  30  *     $a->config['system']['addon'] = 'plugin1,plugin2,facebook';
  31  * 3. Visit the Facebook Settings section of the "Settings->Plugin Settings" page.
  32  *    and click 'Install Facebook Connector'.
  33  * 4. This will ask you to login to Facebook and grant permission to the
  34  *    plugin to do its stuff. Allow it to do so.
  35  * 5. You're done. To turn it off visit the Plugin Settings page again and
  36  *    'Remove Facebook posting'.
  37  *
  38  * Vidoes and embeds will not be posted if there is no other content. Links
  39  * and images will be converted to a format suitable for the Facebook API and
  40  * long posts truncated - with a link to view the full post.
  41  *
  42  * Facebook contacts will not be able to view private photos, as they are not able to
  43  * authenticate to your site to establish identity. We will address this
  44  * in a future release.
  45  */
  46
  47 define('FACEBOOK_MAXPOSTLEN', 420);
  48
  49
  50 function facebook_install() {
  51         register_hook('post_local_end',   'addon/facebook/facebook.php', 'facebook_post_hook');
  52         register_hook('jot_networks',     'addon/facebook/facebook.php', 'facebook_jot_nets');
  53         register_hook('plugin_settings',  'addon/facebook/facebook.php', 'facebook_plugin_settings');
  54         register_hook('cron',             'addon/facebook/facebook.php', 'facebook_cron');
  55         register_hook('queue_predeliver', 'addon/facebook/facebook.php', 'fb_queue_hook');
  56 }
  57
  58
  59 function facebook_uninstall() {
  60         unregister_hook('post_local_end',   'addon/facebook/facebook.php', 'facebook_post_hook');
  61         unregister_hook('jot_networks',     'addon/facebook/facebook.php', 'facebook_jot_nets');
  62         unregister_hook('plugin_settings',  'addon/facebook/facebook.php', 'facebook_plugin_settings');
  63         unregister_hook('cron',             'addon/facebook/facebook.php', 'facebook_cron');
  64         unregister_hook('queue_predeliver', 'addon/facebook/facebook.php', 'fb_queue_hook');
  65 }
  66
  67
  68 /* declare the facebook_module function so that /facebook url requests will land here */
  69
  70 function facebook_module() {}
  71
  72
  73
  74 /* If a->argv[1] is a nickname, this is a callback from Facebook oauth requests. */
  75
  76 function facebook_init(&$a) {
  77
  78         if($a->argc != 2)
  79                 return;
  80         $nick = $a->argv[1];
  81         if(strlen($nick))
  82                 $r = q("SELECT `uid` FROM `user` WHERE `nickname` = '%s' LIMIT 1",
  83                                 dbesc($nick)
  84                 );
  85         if(! count($r))
  86                 return;
  87
  88         $uid           = $r[0]['uid'];
  89         $auth_code     = (($_GET['code']) ? $_GET['code'] : '');
  90         $error         = (($_GET['error_description']) ? $_GET['error_description'] : '');
  91
  92
  93         if($error)
  94                 logger('facebook_init: Error: ' . $error);
  95
  96         if($auth_code && $uid) {
  97
  98                 $appid = get_config('facebook','appid');
  99                 $appsecret = get_config('facebook', 'appsecret');
 100
 101                 $x = fetch_url('https://graph.facebook.com/oauth/access_token?client_id='
 102                         . $appid . '&client_secret=' . $appsecret . '&redirect_uri='
 103                         . urlencode($a->get_baseurl() . '/facebook/' . $nick)
 104                         . '&code=' . $auth_code);
 105
 106                 logger('facebook_init: returned access token: ' . $x, LOGGER_DATA);
 107
 108                 if(strpos($x,'access_token=') !== false) {
 109                         $token = str_replace('access_token=', '', $x);
 110                         if(strpos($token,'&') !== false)
 111                                 $token = substr($token,0,strpos($token,'&'));
 112                         set_pconfig($uid,'facebook','access_token',$token);
 113                         set_pconfig($uid,'facebook','post','1');
 114                         set_pconfig($uid,'facebook','no_linking',1);
 115                         fb_get_self($uid);
 116                         fb_get_friends($uid);
 117                         fb_consume_all($uid);
 118
 119                 }
 120
 121         }
 122
 123 }
 124
 125
 126 function fb_get_self($uid) {
 127         $access_token = get_pconfig($uid,'facebook','access_token');
 128         if(! $access_token)
 129                 return;
 130         $s = fetch_url('https://graph.facebook.com/me/?access_token=' . $access_token);
 131         if($s) {
 132                 $j = json_decode($s);
 133                 set_pconfig($uid,'facebook','self_id',(string) $j->id);
 134         }
 135 }
 136
 137
 138
 139 function fb_get_friends($uid) {
 140
 141         $access_token = get_pconfig($uid,'facebook','access_token');
 142
 143         $no_linking = get_pconfig($uid,'facebook','no_linking');
 144         if($no_linking)
 145                 return;
 146
 147         if(! $access_token)
 148                 return;
 149         $s = fetch_url('https://graph.facebook.com/me/friends?access_token=' . $access_token);
 150         if($s) {
 151                 logger('facebook: fb_get_friends: ' . $s, LOGGER_DATA);
 152                 $j = json_decode($s);
 153                 logger('facebook: fb_get_friends: json: ' . print_r($j,true), LOGGER_DATA);
 154                 foreach($j->data as $person) {
 155                         $s = fetch_url('https://graph.facebook.com/' . $person->id . '?access_token=' . $access_token);
 156                         if($s) {
 157                                 $jp = json_decode($s);
 158                                 logger('fb_get_friends: info: ' . print_r($jp,true), LOGGER_DATA);
 159
 160                                 // always use numeric link for consistency
 161
 162                                 $jp->link = 'http://facebook.com/profile.php?id=' . $person->id;
 163
 164                                 // check if we already have a contact
 165
 166                                 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `url` = '%s' LIMIT 1",
 167                                         intval($uid),
 168                                         dbesc($jp->link)
 169                                 );
 170
 171                                 if(count($r)) {
 172
 173                                         // check that we have all the photos, this has been known to fail on occasion
 174
 175                                         if((! $r[0]['photo']) || (! $r[0]['thumb']) || (! $r[0]['micro'])) {
 176                                                 require_once("Photo.php");
 177
 178                                                 $photos = import_profile_photo('https://graph.facebook.com/' . $jp->id . '/picture', $uid, $r[0]['id']);
 179
 180                                                 $r = q("UPDATE `contact` SET `photo` = '%s',
 181                                                         `thumb` = '%s',
 182                                                         `micro` = '%s',
 183                                                         `name-date` = '%s',
 184                                                         `uri-date` = '%s',
 185                                                         `avatar-date` = '%s'
 186                                                         WHERE `id` = %d LIMIT 1
 187                                                 ",
 188                                                         dbesc($photos[0]),
 189                                                         dbesc($photos[1]),
 190                                                         dbesc($photos[2]),
 191                                                         dbesc(datetime_convert()),
 192                                                         dbesc(datetime_convert()),
 193                                                         dbesc(datetime_convert()),
 194                                                         intval($r[0]['id'])
 195                                                 );
 196                                         }
 197                                         continue;
 198                                 }
 199                                 else {
 200
 201                                         // create contact record
 202                                         $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `addr`, `alias`, `notify`, `poll`,
 203                                                 `name`, `nick`, `photo`, `network`, `rel`, `priority`,
 204                                                 `writable`, `blocked`, `readonly`, `pending` )
 205                                                 VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, %d, 0, 0, 0 ) ",
 206                                                 intval($uid),
 207                                                 dbesc(datetime_convert()),
 208                                                 dbesc($jp->link),
 209                                                 dbesc(''),
 210                                                 dbesc(''),
 211                                                 dbesc($jp->id),
 212                                                 dbesc('facebook ' . $jp->id),
 213                                                 dbesc($jp->name),
 214                                                 dbesc(($jp->nickname) ? $jp->nickname : strtolower($jp->first_name)),
 215                                                 dbesc('https://graph.facebook.com/' . $jp->id . '/picture'),
 216                                                 dbesc(NETWORK_FACEBOOK),
 217                                                 intval(REL_BUD),
 218                                                 intval(1),
 219                                                 intval(1)
 220                                         );
 221                                 }
 222
 223                                 $r = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `uid` = %d LIMIT 1",
 224                                         dbesc($jp->link),
 225                                         intval($uid)
 226                                 );
 227
 228                                 if(! count($r)) {
 229                                         continue;
 230                                 }
 231
 232                                 $contact = $r[0];
 233                                 $contact_id  = $r[0]['id'];
 234
 235                                 require_once("Photo.php");
 236
 237                                 $photos = import_profile_photo($r[0]['photo'],$uid,$contact_id);
 238
 239                                 $r = q("UPDATE `contact` SET `photo` = '%s',
 240                                         `thumb` = '%s',
 241                                         `micro` = '%s',
 242                                         `name-date` = '%s',
 243                                         `uri-date` = '%s',
 244                                         `avatar-date` = '%s'
 245                                         WHERE `id` = %d LIMIT 1
 246                                 ",
 247                                         dbesc($photos[0]),
 248                                         dbesc($photos[1]),
 249                                         dbesc($photos[2]),
 250                                         dbesc(datetime_convert()),
 251                                         dbesc(datetime_convert()),
 252                                         dbesc(datetime_convert()),
 253                                         intval($contact_id)
 254                                 );
 255
 256                         }
 257                 }
 258         }
 259 }
 260
 261 // This is the POST method to the facebook settings page
 262 // Content is posted to Facebook in the function facebook_post_hook()
 263
 264 function facebook_post(&$a) {
 265
 266         $uid = local_user();
 267         if($uid){
 268
 269                 $value = ((x($_POST,'post_by_default')) ? intval($_POST['post_by_default']) : 0);
 270                 set_pconfig($uid,'facebook','post_by_default', $value);
 271
 272                 $no_linking = get_pconfig($uid,'facebook','no_linking');
 273
 274                 $linkvalue = ((x($_POST,'facebook_linking')) ? intval($_POST['facebook_linking']) : 0);
 275                 set_pconfig($uid,'facebook','no_linking', (($linkvalue) ? 0 : 1));
 276
 277                 // FB linkage was allowed but has just been turned off - remove all FB contacts and posts
 278
 279                 if((! intval($no_linking)) && (! intval($linkvalue))) {
 280                         $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `network` = '%s' ",
 281                                 intval($uid),
 282                                 dbesc(NETWORK_FACEBOOK)
 283                         );
 284                         if(count($r)) {
 285                                 require_once('include/Contact.php');
 286                                 foreach($r as $rr)
 287                                         contact_remove($rr['id']);
 288                         }
 289                 }
 290                 elseif(intval($no_linking) && intval($linkvalue)) {
 291                         // FB linkage is now allowed - import stuff.
 292                         fb_get_self($uid);
 293                         fb_get_friends($uid);
 294                         fb_consume_all($uid);
 295                 }
 296
 297                 info( t('Settings updated.') . EOL);
 298         }
 299
 300         return;
 301 }
 302
 303 // Facebook settings form
 304
 305 function facebook_content(&$a) {
 306
 307         if(! local_user()) {
 308                 notice( t('Permission denied.') . EOL);
 309                 return '';
 310         }
 311
 312         if($a->argc > 1 && $a->argv[1] === 'remove') {
 313                 del_pconfig(local_user(),'facebook','post');
 314                 info( t('Facebook disabled') . EOL);
 315         }
 316
 317         if($a->argc > 1 && $a->argv[1] === 'friends') {
 318                 fb_get_friends(local_user());
 319                 info( t('Updating contacts') . EOL);
 320         }
 321
 322
 323         $fb_installed = get_pconfig(local_user(),'facebook','post');
 324
 325         $appid = get_config('facebook','appid');
 326
 327         if(! $appid) {
 328                 notice( t('Facebook API key is missing.') . EOL);
 329                 return '';
 330         }
 331
 332         $a->page['htmlhead'] .= '<link rel="stylesheet" type="text/css" href="'
 333                 . $a->get_baseurl() . '/addon/facebook/facebook.css' . '" media="all" />' . "\r\n";
 334
 335         $o .= '<h3>' . t('Facebook Connect') . '</h3>';
 336
 337         if(! $fb_installed) {
 338                 $o .= '<div id="facebook-enable-wrapper">';
 339
 340                 $o .= '<a href="https://www.facebook.com/dialog/oauth?client_id=' . $appid . '&redirect_uri='
 341                         . $a->get_baseurl() . '/facebook/' . $a->user['nickname'] . '&scope=publish_stream,read_stream,offline_access">' . t('Install Facebook connector for this account.') . '</a>';
 342                 $o .= '</div>';
 343         }
 344
 345         if($fb_installed) {
 346                 $o .= '<div id="facebook-disable-wrapper">';
 347
 348                 $o .= '<a href="' . $a->get_baseurl() . '/facebook/remove' . '">' . t('Remove Facebook connector') . '</a></div>';
 349
 350                 $o .= '<div id="facebook-post-default-form">';
 351                 $o .= '<form action="facebook" method="post" >';
 352                 $post_by_default = get_pconfig(local_user(),'facebook','post_by_default');
 353                 $checked = (($post_by_default) ? ' checked="checked" ' : '');
 354                 $o .= '<input type="checkbox" name="post_by_default" value="1"' . $checked . '/>' . ' ' . t('Post to Facebook by default') . EOL;
 355
 356                 $no_linking = get_pconfig(local_user(),'facebook','no_linking');
 357                 $checked = (($no_linking) ? '' : ' checked="checked" ');
 358                 $o .= '<input type="checkbox" name="facebook_linking" value="1"' . $checked . '/>' . ' ' . t('Link all your Facebook friends and conversations') . EOL ;
 359
 360                 $hidden = (($a->user['hidewall'] || get_config('system','block_public')) ? true : false);
 361                 if(! $hidden) {
 362                         $o .= EOL;
 363                         $o .= t('Warning: Your Facebook privacy settings can not be imported.') . EOL;
 364                         $o .= t('Linked Facebook items <strong>may</strong> be publicly visible, depending on your privacy settings for this website/account.') . EOL;
 365                 }
 366                 $o .= '<input type="submit" name="submit" value="' . t('Submit') . '" /></form></div>';
 367         }
 368
 369         return $o;
 370 }
 371
 372
 373
 374 function facebook_cron($a,$b) {
 375
 376         $last = get_config('facebook','last_poll');
 377
 378         $poll_interval = intval(get_config('facebook','poll_interval'));
 379         if(! $poll_interval)
 380                 $poll_interval = 3600;
 381
 382         if($last) {
 383                 $next = $last + $poll_interval;
 384                 if($next > time())
 385                         return;
 386         }
 387
 388         logger('facebook_cron');
 389
 390
 391         // Find the FB users on this site and randomize in case one of them
 392         // uses an obscene amount of memory. It may kill this queue run
 393         // but hopefully we'll get a few others through on each run.
 394
 395         $r = q("SELECT * FROM `pconfig` WHERE `cat` = 'facebook' AND `k` = 'post' AND `v` = '1' ORDER BY RAND() ");
 396         if(count($r)) {
 397                 foreach($r as $rr) {
 398                         // check for new friends once a day
 399                         $last_friend_check = get_pconfig($rr['uid'],'facebook','friend_check');
 400                         if($last_friend_check)
 401                                 $next_friend_check = $last_friend_check + 86400;
 402                         if($next_friend_check <= time()) {
 403                                 fb_get_friends($rr['uid']);
 404                                 set_pconfig($rr['uid'],'facebook','friend_check',time());
 405                         }
 406                         fb_consume_all($rr['uid']);
 407                 }
 408         }
 409
 410         set_config('facebook','last_poll', time());
 411
 412 }
 413
 414
 415
 416 function facebook_plugin_settings(&$a,&$b) {
 417
 418         $b .= '<div class="settings-block">';
 419         $b .= '<h3>' . t('Facebook') . '</h3>';
 420         $b .= '<a href="facebook">' . t('Facebook Connector Settings') . '</a><br />';
 421         $b .= '</div>';
 422
 423 }
 424
 425 function facebook_jot_nets(&$a,&$b) {
 426         if(! local_user())
 427                 return;
 428
 429         $fb_post = get_pconfig(local_user(),'facebook','post');
 430         if(intval($fb_post) == 1) {
 431                 $fb_defpost = get_pconfig(local_user(),'facebook','post_by_default');
 432                 $selected = ((intval($fb_defpost) == 1) ? ' checked="checked" ' : '');
 433                 $b .= '<div class="profile-jot-net"><input type="checkbox" name="facebook_enable"' . $selected . 'value="1" /> '
 434                         . t('Post to Facebook') . '</div>';
 435         }
 436 }
 437
 438
 439 function facebook_post_hook(&$a,&$b) {
 440
 441         /**
 442          * Post to Facebook stream
 443          */
 444
 445         require_once('include/group.php');
 446
 447         logger('Facebook post');
 448
 449         $reply = false;
 450         $likes = false;
 451
 452         if((local_user()) && (local_user() == $b['uid'])) {
 453
 454                 // Facebook is not considered a private network
 455                 if($b['prvnets'] && $b['private'])
 456                         return;
 457
 458                 if($b['parent']) {
 459                         $r = q("SELECT * FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
 460                                 intval($b['parent']),
 461                                 intval(local_user())
 462                         );
 463                         if(count($r) && substr($r[0]['uri'],0,4) === 'fb::')
 464                                 $reply = substr($r[0]['uri'],4);
 465                         elseif(count($r) && substr($r[0]['extid'],0,4) === 'fb::')
 466                                 $reply = substr($r[0]['extid'],4);
 467                         else
 468                                 return;
 469                         logger('facebook reply id=' . $reply);
 470                 }
 471
 472                 if($b['private'] && $reply === false) {
 473                         $allow_people = expand_acl($b['allow_cid']);
 474                         $allow_groups = expand_groups(expand_acl($b['allow_gid']));
 475                         $deny_people  = expand_acl($b['deny_cid']);
 476                         $deny_groups  = expand_groups(expand_acl($b['deny_gid']));
 477
 478                         $recipients = array_unique(array_merge($allow_people,$allow_groups));
 479                         $deny = array_unique(array_merge($deny_people,$deny_groups));
 480
 481                         $allow_str = dbesc(implode(', ',$recipients));
 482                         if($allow_str) {
 483                                 $r = q("SELECT `notify` FROM `contact` WHERE `id` IN ( $allow_str ) AND `network` = 'face'");
 484                                 $allow_arr = array();
 485                                 if(count($r))
 486                                         foreach($r as $rr)
 487                                                 $allow_arr[] = $rr['notify'];
 488                         }
 489
 490                         $deny_str = dbesc(implode(', ',$deny));
 491                         if($deny_str) {
 492                                 $r = q("SELECT `notify` FROM `contact` WHERE `id` IN ( $deny_str ) AND `network` = 'face'");
 493                                 $deny_arr = array();
 494                                 if(count($r))
 495                                         foreach($r as $rr)
 496                                                 $deny_arr[] = $rr['notify'];
 497                         }
 498
 499                         if(count($deny_arr) && (! count($allow_arr))) {
 500
 501                                 // One or more FB folks were denied access but nobody on FB was specifically allowed access.
 502                                 // This might cause the post to be open to public on Facebook, but only to selected members
 503                                 // on another network. Since this could potentially leak a post to somebody who was denied,
 504                                 // we will skip posting it to Facebook with a slightly vague but relevant message that will
 505                                 // hopefully lead somebody to this code comment for a better explanation of what went wrong.
 506
 507                                 notice( t('Post to Facebook cancelled because of multi-network access permission conflict.') . EOL);
 508                                 return;
 509                         }
 510
 511
 512                         // if it's a private message but no Facebook members are allowed or denied, skip Facebook post
 513
 514                         if((! count($allow_arr)) && (! count($deny_arr)))
 515                                 return;
 516                 }
 517
 518                 if($b['verb'] == ACTIVITY_LIKE)
 519                         $likes = true;
 520
 521
 522                 $appid  = get_config('facebook', 'appid'  );
 523                 $secret = get_config('facebook', 'appsecret' );
 524
 525                 if($appid && $secret) {
 526
 527                         logger('facebook: have appid+secret');
 528
 529                         $fb_post   = intval(get_pconfig(local_user(),'facebook','post'));
 530                         $fb_enable = (($fb_post && x($_POST,'facebook_enable')) ? intval($_POST['facebook_enable']) : 0);
 531                         $fb_token  = get_pconfig(local_user(),'facebook','access_token');
 532
 533                         logger('facebook: $fb_post: ' . $fb_post . ' $fb_enable: ' . $fb_enable . ' $fb_token: ' . $fb_token,LOGGER_DEBUG);
 534
 535                         // post to facebook if it's a public post and we've ticked the 'post to Facebook' box,
 536                         // or it's a private message with facebook participants
 537                         // or it's a reply or likes action to an existing facebook post
 538
 539                         if($fb_post && $fb_token && ($fb_enable || $b['private'] || $reply)) {
 540                                 logger('facebook: able to post');
 541                                 require_once('library/facebook.php');
 542                                 require_once('include/bbcode.php');
 543
 544                                 $msg = $b['body'];
 545
 546                                 logger('Facebook post: original msg=' . $msg, LOGGER_DATA);
 547
 548                                 // make links readable before we strip the code
 549
 550                                 // unless it's a dislike - just send the text as a comment
 551
 552                                 if($b['verb'] == ACTIVITY_DISLIKE)
 553                                         $msg = trim(strip_tags(bbcode($msg)));
 554
 555                                 $search_str = $a->get_baseurl() . '/search';
 556
 557                                 if(preg_match("/\[url=(.*?)\](.*?)\[\/url\]/is",$msg,$matches)) {
 558
 559                                         // don't use hashtags for message link
 560
 561                                         if(strpos($matches[2],$search_str) === false) {
 562                                                 $link = $matches[1];
 563                                                 if(substr($matches[2],0,5) != '[img]')
 564                                                         $linkname = $matches[2];
 565                                         }
 566                                 }
 567
 568                                 $msg = preg_replace("/\[url=(.*?)\](.*?)\[\/url\]/is",'$2 $1',$msg);
 569
 570                                 if(preg_match("/\[img\](.*?)\[\/img\]/is",$msg,$matches))
 571                                         $image = $matches[1];
 572
 573                                 $msg = preg_replace("/\[img\](.*?)\[\/img\]/is", t('Image: ') . '$1', $msg);
 574
 575                                 if((strpos($link,z_root()) !== false) && (! $image))
 576                                         $image = $a->get_baseurl() . '/images/friendika-64.jpg';
 577
 578                                 $msg = trim(strip_tags(bbcode($msg)));
 579                                 $msg = html_entity_decode($msg,ENT_QUOTES,'UTF-8');
 580
 581                                 // add any attachments as text urls
 582
 583                             $arr = explode(',',$b['attach']);
 584
 585                             if(count($arr)) {
 586                                         $msg .= "\n";
 587                                 foreach($arr as $r) {
 588                                 $matches = false;
 589                                                 $cnt = preg_match('|\[attach\]href=\"(.*?)\" size=\"(.*?)\" type=\"(.*?)\" title=\"(.*?)\"\[\/attach\]|',$r,$matches);
 590                                                 if($cnt) {
 591                                                         $msg .= $matches[1];
 592                                                 }
 593                                         }
 594                                 }
 595
 596                                 if (strlen($msg) > FACEBOOK_MAXPOSTLEN) {
 597                                         $shortlink = "";
 598                                         require_once('library/slinky.php');
 599
 600                                         $display_url = $a->get_baseurl() . '/display/' . $a->user['nickname'] . '/' . $b['id'];
 601                                         $slinky = new Slinky( $display_url );
 602                                         // setup a cascade of shortening services
 603                                         // try to get a short link from these services
 604                                         // in the order ur1.ca, trim, id.gd, tinyurl
 605                                         $slinky->set_cascade( array( new Slinky_UR1ca(), new Slinky_Trim(), new Slinky_IsGd(), new Slinky_TinyURL() ) );
 606                                         $shortlink = $slinky->short();
 607                                         // the new message will be shortened such that "... $shortlink"
 608                                         // will fit into the character limit
 609                                         $msg = substr($msg, 0, FACEBOOK_MAXPOSTLEN - strlen($shortlink) - 4);
 610                                         $msg .= '... ' . $shortlink;
 611                                 }
 612                                 if(! strlen($msg))
 613                                         return;
 614
 615                                 logger('Facebook post: msg=' . $msg, LOGGER_DATA);
 616
 617                                 if($likes) {
 618                                         $postvars = array('access_token' => $fb_token);
 619                                 }
 620                                 else {
 621                                         $postvars = array(
 622                                                 'access_token' => $fb_token,
 623                                                 'message' => $msg
 624                                         );
 625                                         if(isset($image))
 626                                                 $postvars['picture'] = $image;
 627                                         if(isset($link))
 628                                                 $postvars['link'] = $link;
 629                                         if(isset($linkname))
 630                                                 $postvars['name'] = $linkname;
 631                                 }
 632
 633                                 if(($b['private']) && (! $b['parent'])) {
 634                                         $postvars['privacy'] = '{"value": "CUSTOM", "friends": "SOME_FRIENDS"';
 635                                         if(count($allow_arr))
 636                                                 $postvars['privacy'] .= ',"allow": "' . implode(',',$allow_arr) . '"';
 637                                         if(count($deny_arr))
 638                                                 $postvars['privacy'] .= ',"deny": "' . implode(',',$deny_arr) . '"';
 639                                         $postvars['privacy'] .= '}';
 640
 641                                 }
 642
 643                                 if($reply) {
 644                                         $url = 'https://graph.facebook.com/' . $reply . '/' . (($likes) ? 'likes' : 'comments');
 645                                 }
 646                                 else {
 647                                         $url = 'https://graph.facebook.com/me/feed';
 648                                         if($b['plink'])
 649                                                 $postvars['actions'] = '{"name": "' . t('View on Friendika') . '", "link": "' .  $b['plink'] . '"}';
 650                                 }
 651
 652                                 logger('facebook: post to ' . $url);
 653                                 logger('facebook: postvars: ' . print_r($postvars,true));
 654
 655                                 // "test_mode" prevents anything from actually being posted.
 656                                 // Otherwise, let's do it.
 657
 658                                 if(! get_config('facebook','test_mode')) {
 659                                         $x = post_url($url, $postvars);
 660
 661                                         $retj = json_decode($x);
 662                                         if($retj->id) {
 663                                                 q("UPDATE `item` SET `extid` = '%s' WHERE `id` = %d LIMIT 1",
 664                                                         dbesc('fb::' . $retj->id),
 665                                                         intval($b['id'])
 666                                                 );
 667                                         }
 668                                         else {
 669                                                 if(! $likes) {
 670                                                         $s = serialize(array('url' => $url, 'item' => $b['id'], 'post' => $postvars));
 671                                                         q("INSERT INTO `queue` ( `network`, `cid`, `created`, `last`, `content`)
 672                                                                 VALUES ( '%s', %d, '%s', '%s', '%s') ",
 673                                                                 dbesc(NETWORK_FACEBOOK),
 674                                                                 intval($a->contact),
 675                                                                 dbesc(datetime_convert()),
 676                                                                 dbesc(datetime_convert()),
 677                                                                 dbesc($s)
 678                                                         );
 679
 680                                                         notice( t('Facebook post failed. Queued for retry.') . EOL);
 681                                                 }
 682                                         }
 683
 684                                         logger('Facebook post returns: ' . $x, LOGGER_DEBUG);
 685                                 }
 686                         }
 687                 }
 688         }
 689 }
 690
 691
 692 function fb_queue_hook(&$a,&$b) {
 693
 694         $qi = q("SELECT * FROM `queue` WHERE `network` = '%s'",
 695                 dbesc(NETWORK_FACEBOOK)
 696         );
 697         if(! count($qi))
 698                 return;
 699
 700         require_once('include/queue_fn.php');
 701
 702         foreach($qi as $x) {
 703                 if($x['network'] !== NETWORK_FACEBOOK)
 704                         continue;
 705
 706                 logger('facebook_queue: run');
 707
 708                 $r = q("SELECT `user`.* FROM `user` LEFT JOIN `contact` on `contact`.`uid` = `user`.`uid`
 709                         WHERE `contact`.`self` = 1 AND `contact`.`id` = %d LIMIT 1",
 710                         intval($x['cid'])
 711                 );
 712                 if(! count($r))
 713                         continue;
 714
 715                 $user = $r[0];
 716
 717                 $appid  = get_config('facebook', 'appid'  );
 718                 $secret = get_config('facebook', 'appsecret' );
 719
 720                 if($appid && $secret) {
 721                         $fb_post   = intval(get_pconfig($user['uid'],'facebook','post'));
 722                         $fb_token  = get_pconfig($user['uid'],'facebook','access_token');
 723
 724                         if($fb_post && $fb_token) {
 725                                 logger('facebook_queue: able to post');
 726                                 require_once('library/facebook.php');
 727
 728                                 $z = unserialize($x['content']);
 729                                 $item = $z['item'];
 730                                 $j = post_url($z['url'],$z['post']);
 731
 732                                 $retj = json_decode($j);
 733                                 if($retj->id) {
 734                                         q("UPDATE `item` SET `extid` = '%s' WHERE `id` = %d LIMIT 1",
 735                                                 dbesc('fb::' . $retj->id),
 736                                                 intval($item)
 737                                         );
 738                                         logger('facebook_queue: success: ' . $j);
 739                                         remove_queue_item($x['id']);
 740                                 }
 741                                 else {
 742                                         logger('facebook_queue: failed: ' . $j);
 743                                         update_queue_time($x['id']);
 744                                 }
 745                         }
 746                 }
 747         }
 748 }
 749
 750 function fb_consume_all($uid) {
 751
 752         require_once('include/items.php');
 753
 754         $access_token = get_pconfig($uid,'facebook','access_token');
 755         if(! $access_token)
 756                 return;
 757
 758
 759         $s = fetch_url('https://graph.facebook.com/me/feed?access_token=' . $access_token);
 760         if($s) {
 761                 $j = json_decode($s);
 762                 logger('fb_consume_stream: wall: ' . print_r($j,true), LOGGER_DATA);
 763                 fb_consume_stream($uid,$j,true);
 764         }
 765         $s = fetch_url('https://graph.facebook.com/me/home?access_token=' . $access_token);
 766         if($s) {
 767                 $j = json_decode($s);
 768                 logger('fb_consume_stream: feed: ' . print_r($j,true), LOGGER_DATA);
 769                 fb_consume_stream($uid,$j,false);
 770         }
 771
 772 }
 773
 774 function fb_consume_stream($uid,$j,$wall = false) {
 775         $a = get_app();
 776
 777         $no_linking = get_pconfig($uid,'facebook','no_linking');
 778         if($no_linking)
 779                 return;
 780
 781         $self = q("SELECT * FROM `contact` WHERE `self` = 1 AND `uid` = %d LIMIT 1",
 782                 intval($uid)
 783         );
 784
 785         $user = q("SELECT `nickname`, `blockwall` FROM `user` WHERE `uid` = %d LIMIT 1",
 786                 intval($uid)
 787         );
 788         if(count($user))
 789                 $my_local_url = $a->get_baseurl() . '/profile/' . $user[0]['nickname'];
 790
 791         $self_id = get_pconfig($uid,'facebook','self_id');
 792         if(! count($j->data) || (! strlen($self_id)))
 793                 return;
 794
 795         foreach($j->data as $entry) {
 796                 logger('fb_consume: entry: ' . print_r($entry,true), LOGGER_DATA);
 797                 $datarray = array();
 798
 799                 $r = q("SELECT * FROM `item` WHERE ( `uri` = '%s' OR `extid` = '%s') AND `uid` = %d LIMIT 1",
 800                                 dbesc('fb::' . $entry->id),
 801                                 dbesc('fb::' . $entry->id),
 802                                 intval($uid)
 803                 );
 804                 if(count($r)) {
 805                         $post_exists = true;
 806                         $orig_post = $r[0];
 807                         $top_item = $r[0]['id'];
 808                 }
 809                 else {
 810                         $post_exists = false;
 811                         $orig_post = null;
 812                 }
 813
 814                 if(! $orig_post) {
 815                         $datarray['gravity'] = 0;
 816                         $datarray['uid'] = $uid;
 817                         $datarray['wall'] = (($wall) ? 1 : 0);
 818                         $datarray['uri'] = $datarray['parent-uri'] = 'fb::' . $entry->id;
 819                         $from = $entry->from;
 820                         if($from->id == $self_id)
 821                                 $datarray['contact-id'] = $self[0]['id'];
 822                         else {
 823                                 $r = q("SELECT * FROM `contact` WHERE `notify` = '%s' AND `uid` = %d AND `blocked` = 0 AND `readonly` = 0 LIMIT 1",
 824                                         dbesc($from->id),
 825                                         intval($uid)
 826                                 );
 827                                 if(count($r))
 828                                         $datarray['contact-id'] = $r[0]['id'];
 829                         }
 830
 831                         // don't store post if we don't have a contact
 832
 833                         if(! x($datarray,'contact-id')) {
 834                                 logger('no contact: post ignored');
 835                                 continue;
 836                         }
 837
 838                         $datarray['verb'] = ACTIVITY_POST;
 839                         if($wall) {
 840                                 $datarray['owner-name'] = $self[0]['name'];
 841                                 $datarray['owner-link'] = $self[0]['url'];
 842                                 $datarray['owner-avatar'] = $self[0]['thumb'];
 843                         }
 844                         if(isset($entry->application) && isset($entry->application->name) && strlen($entry->application->name))
 845                                 $datarray['app'] = strip_tags($entry->application->name);
 846                         else
 847                                 $datarray['app'] = 'facebook';
 848                         $datarray['author-name'] = $from->name;
 849                         $datarray['author-link'] = 'http://facebook.com/profile.php?id=' . $from->id;
 850                         $datarray['author-avatar'] = 'https://graph.facebook.com/' . $from->id . '/picture';
 851                         $datarray['plink'] = $datarray['author-link'] . '&v=wall&story_fbid=' . substr($entry->id,strpos($entry->id,'_') + 1);
 852
 853                         $datarray['body'] = $entry->message;
 854                         if($entry->picture)
 855                                 $datarray['body'] .= "\n\n" . '[img]' . $entry->picture . '[/img]';
 856                         if($entry->link)
 857                                 $datarray['body'] .= "\n" . linkify($entry->link);
 858                         if($entry->name)
 859                                 $datarray['body'] .= "\n" . $entry->name;
 860                         if($entry->caption)
 861                                 $datarray['body'] .= "\n" . $entry->caption;
 862                         if($entry->description)
 863                                 $datarray['body'] .= "\n" . $entry->description;
 864                         $datarray['created'] = datetime_convert('UTC','UTC',$entry->created_time);
 865                         $datarray['edited'] = datetime_convert('UTC','UTC',$entry->updated_time);
 866
 867                         // If the entry has a privacy policy, we cannot assume who can or cannot see it,
 868                         // as the identities are from a foreign system. Mark it as private to the owner.
 869
 870                         if($entry->privacy && $entry->privacy->value !== 'EVERYONE') {
 871                                 $datarray['private'] = 1;
 872                                 $datarray['allow_cid'] = '<' . $uid . '>';
 873                         }
 874
 875                         $top_item = item_store($datarray);
 876                         $r = q("SELECT * FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
 877                                 intval($top_item),
 878                                 intval($uid)
 879                         );
 880                         if(count($r)) {
 881                                 $orig_post = $r[0];
 882                                 logger('fb: new top level item posted');
 883                         }
 884                 }
 885
 886                 if(isset($entry->likes) && isset($entry->likes->data))
 887                         $likers = $entry->likes->data;
 888                 else
 889                         $likers = null;
 890
 891                 if(isset($entry->comments) && isset($entry->comments->data))
 892                         $comments = $entry->comments->data;
 893                 else
 894                         $comments = null;
 895
 896                 if(is_array($likers)) {
 897                         foreach($likers as $likes) {
 898
 899                                 if(! $orig_post)
 900                                         continue;
 901
 902                                 // If we posted the like locally, it will be found with our url, not the FB url.
 903
 904                                 $second_url = (($likes->id == $self_id) ? $self[0]['url'] : 'http://facebook.com/profile.php?id=' . $likes->id);
 905
 906                                 $r = q("SELECT * FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `verb` = '%s'
 907                                         AND ( `author-link` = '%s' OR `author-link` = '%s' ) LIMIT 1",
 908                                         dbesc($orig_post['uri']),
 909                                         intval($uid),
 910                                         dbesc(ACTIVITY_LIKE),
 911                                         dbesc('http://facebook.com/profile.php?id=' . $likes->id),
 912                                         dbesc($second_url)
 913                                 );
 914
 915                                 if(count($r))
 916                                         continue;
 917
 918                                 $likedata = array();
 919                                 $likedata['parent'] = $top_item;
 920                                 $likedata['verb'] = ACTIVITY_LIKE;
 921                                 $likedata['gravity'] = 3;
 922                                 $likedata['uid'] = $uid;
 923                                 $likedata['wall'] = (($wall) ? 1 : 0);
 924                                 $likedata['uri'] = item_new_uri($a->get_baseurl(), $uid);
 925                                 $likedata['parent-uri'] = $orig_post['uri'];
 926                                 if($likes->id == $self_id)
 927                                         $likedata['contact-id'] = $self[0]['id'];
 928                                 else {
 929                                         $r = q("SELECT * FROM `contact` WHERE `notify` = '%s' AND `uid` = %d AND `blocked` = 0 AND `readonly` = 0 LIMIT 1",
 930                                                 dbesc($likes->id),
 931                                                 intval($uid)
 932                                         );
 933                                         if(count($r))
 934                                                 $likedata['contact-id'] = $r[0]['id'];
 935                                 }
 936                                 if(! x($likedata,'contact-id'))
 937                                         $likedata['contact-id'] = $orig_post['contact-id'];
 938
 939                                 $likedata['app'] = 'facebook';
 940                                 $likedata['verb'] = ACTIVITY_LIKE;
 941                                 $likedata['author-name'] = $likes->name;
 942                                 $likedata['author-link'] = 'http://facebook.com/profile.php?id=' . $likes->id;
 943                                 $likedata['author-avatar'] = 'https://graph.facebook.com/' . $likes->id . '/picture';
 944
 945                                 $author  = '[url=' . $likedata['author-link'] . ']' . $likedata['author-name'] . '[/url]';
 946                                 $objauthor =  '[url=' . $orig_post['author-link'] . ']' . $orig_post['author-name'] . '[/url]';
 947                                 $post_type = t('status');
 948                         $plink = '[url=' . $orig_post['plink'] . ']' . $post_type . '[/url]';
 949                                 $likedata['object-type'] = ACTIVITY_OBJ_NOTE;
 950
 951                                 $likedata['body'] = sprintf( t('%1$s likes %2$s\'s %3$s'), $author, $objauthor, $plink);
 952                                 $likedata['object'] = '<object><type>' . ACTIVITY_OBJ_NOTE . '</type><local>1</local>' .
 953                                         '<id>' . $orig_post['uri'] . '</id><link>' . xmlify('<link rel="alternate" type="text/html" href="' . xmlify($orig_post['plink']) . '" />') . '</link><title>' . $orig_post['title'] . '</title><content>' . $orig_post['body'] . '</content></object>';
 954
 955                                 $item = item_store($likedata);
 956                         }
 957                 }
 958                 if(is_array($comments)) {
 959                         foreach($comments as $cmnt) {
 960
 961                                 if(! $orig_post)
 962                                         continue;
 963
 964                                 $r = q("SELECT * FROM `item` WHERE `uid` = %d AND ( `uri` = '%s' OR `extid` = '%s' ) LIMIT 1",
 965                                         intval($uid),
 966                                         dbesc('fb::' . $cmnt->id),
 967                                         dbesc('fb::' . $cmnt->id)
 968                                 );
 969                                 if(count($r))
 970                                         continue;
 971
 972                                 $cmntdata = array();
 973                                 $cmntdata['parent'] = $top_item;
 974                                 $cmntdata['verb'] = ACTIVITY_POST;
 975                                 $cmntdata['gravity'] = 6;
 976                                 $cmntdata['uid'] = $uid;
 977                                 $cmntdata['wall'] = (($wall) ? 1 : 0);
 978                                 $cmntdata['uri'] = 'fb::' . $cmnt->id;
 979                                 $cmntdata['parent-uri'] = $orig_post['uri'];
 980                                 if($cmnt->from->id == $self_id) {
 981                                         $cmntdata['contact-id'] = $self[0]['id'];
 982                                 }
 983                                 else {
 984                                         $r = q("SELECT * FROM `contact` WHERE `notify` = '%s' AND `uid` = %d LIMIT 1",
 985                                                 dbesc($cmnt->from->id),
 986                                                 intval($uid)
 987                                         );
 988                                         if(count($r)) {
 989                                                 $cmntdata['contact-id'] = $r[0]['id'];
 990                                                 if($r[0]['blocked'] || $r[0]['readonly'])
 991                                                         continue;
 992                                         }
 993                                 }
 994                                 if(! x($cmntdata,'contact-id'))
 995                                         $cmntdata['contact-id'] = $orig_post['contact-id'];
 996
 997                                 $cmntdata['app'] = 'facebook';
 998                                 $cmntdata['created'] = datetime_convert('UTC','UTC',$cmnt->created_time);
 999                                 $cmntdata['edited']  = datetime_convert('UTC','UTC',$cmnt->created_time);
1000                                 $cmntdata['verb'] = ACTIVITY_POST;
1001                                 $cmntdata['author-name'] = $cmnt->from->name;
1002                                 $cmntdata['author-link'] = 'http://facebook.com/profile.php?id=' . $cmnt->from->id;
1003                                 $cmntdata['author-avatar'] = 'https://graph.facebook.com/' . $cmnt->from->id . '/picture';
1004                                 $cmntdata['body'] = $cmnt->message;
1005                                 $item = item_store($cmntdata);
1006                         }
1007                 }
1008         }
1009 }
1010