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                 if(! $j->data)
 155                         return;
 156                 foreach($j->data as $person) {
 157                         $s = fetch_url('https://graph.facebook.com/' . $person->id . '?access_token=' . $access_token);
 158                         if($s) {
 159                                 $jp = json_decode($s);
 160                                 logger('fb_get_friends: info: ' . print_r($jp,true), LOGGER_DATA);
 161
 162                                 // always use numeric link for consistency
 163
 164                                 $jp->link = 'http://facebook.com/profile.php?id=' . $person->id;
 165
 166                                 // check if we already have a contact
 167
 168                                 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `url` = '%s' LIMIT 1",
 169                                         intval($uid),
 170                                         dbesc($jp->link)
 171                                 );
 172
 173                                 if(count($r)) {
 174
 175                                         // check that we have all the photos, this has been known to fail on occasion
 176
 177                                         if((! $r[0]['photo']) || (! $r[0]['thumb']) || (! $r[0]['micro'])) {
 178                                                 require_once("Photo.php");
 179
 180                                                 $photos = import_profile_photo('https://graph.facebook.com/' . $jp->id . '/picture', $uid, $r[0]['id']);
 181
 182                                                 $r = q("UPDATE `contact` SET `photo` = '%s',
 183                                                         `thumb` = '%s',
 184                                                         `micro` = '%s',
 185                                                         `name-date` = '%s',
 186                                                         `uri-date` = '%s',
 187                                                         `avatar-date` = '%s'
 188                                                         WHERE `id` = %d LIMIT 1
 189                                                 ",
 190                                                         dbesc($photos[0]),
 191                                                         dbesc($photos[1]),
 192                                                         dbesc($photos[2]),
 193                                                         dbesc(datetime_convert()),
 194                                                         dbesc(datetime_convert()),
 195                                                         dbesc(datetime_convert()),
 196                                                         intval($r[0]['id'])
 197                                                 );
 198                                         }
 199                                         continue;
 200                                 }
 201                                 else {
 202
 203                                         // create contact record
 204                                         $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `addr`, `alias`, `notify`, `poll`,
 205                                                 `name`, `nick`, `photo`, `network`, `rel`, `priority`,
 206                                                 `writable`, `blocked`, `readonly`, `pending` )
 207                                                 VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, %d, 0, 0, 0 ) ",
 208                                                 intval($uid),
 209                                                 dbesc(datetime_convert()),
 210                                                 dbesc($jp->link),
 211                                                 dbesc(''),
 212                                                 dbesc(''),
 213                                                 dbesc($jp->id),
 214                                                 dbesc('facebook ' . $jp->id),
 215                                                 dbesc($jp->name),
 216                                                 dbesc(($jp->nickname) ? $jp->nickname : strtolower($jp->first_name)),
 217                                                 dbesc('https://graph.facebook.com/' . $jp->id . '/picture'),
 218                                                 dbesc(NETWORK_FACEBOOK),
 219                                                 intval(CONTACT_IS_FRIEND),
 220                                                 intval(1),
 221                                                 intval(1)
 222                                         );
 223                                 }
 224
 225                                 $r = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `uid` = %d LIMIT 1",
 226                                         dbesc($jp->link),
 227                                         intval($uid)
 228                                 );
 229
 230                                 if(! count($r)) {
 231                                         continue;
 232                                 }
 233
 234                                 $contact = $r[0];
 235                                 $contact_id  = $r[0]['id'];
 236
 237                                 require_once("Photo.php");
 238
 239                                 $photos = import_profile_photo($r[0]['photo'],$uid,$contact_id);
 240
 241                                 $r = q("UPDATE `contact` SET `photo` = '%s',
 242                                         `thumb` = '%s',
 243                                         `micro` = '%s',
 244                                         `name-date` = '%s',
 245                                         `uri-date` = '%s',
 246                                         `avatar-date` = '%s'
 247                                         WHERE `id` = %d LIMIT 1
 248                                 ",
 249                                         dbesc($photos[0]),
 250                                         dbesc($photos[1]),
 251                                         dbesc($photos[2]),
 252                                         dbesc(datetime_convert()),
 253                                         dbesc(datetime_convert()),
 254                                         dbesc(datetime_convert()),
 255                                         intval($contact_id)
 256                                 );
 257
 258                         }
 259                 }
 260         }
 261 }
 262
 263 // This is the POST method to the facebook settings page
 264 // Content is posted to Facebook in the function facebook_post_hook()
 265
 266 function facebook_post(&$a) {
 267
 268         $uid = local_user();
 269         if($uid){
 270
 271                 $value = ((x($_POST,'post_by_default')) ? intval($_POST['post_by_default']) : 0);
 272                 set_pconfig($uid,'facebook','post_by_default', $value);
 273
 274                 $no_linking = get_pconfig($uid,'facebook','no_linking');
 275
 276                 $no_wall = ((x($_POST,'facebook_no_wall')) ? intval($_POST['facebook_no_wall']) : 0);
 277                 set_pconfig($uid,'facebook','no_wall',$no_wall);
 278
 279
 280                 $linkvalue = ((x($_POST,'facebook_linking')) ? intval($_POST['facebook_linking']) : 0);
 281                 set_pconfig($uid,'facebook','no_linking', (($linkvalue) ? 0 : 1));
 282
 283                 // FB linkage was allowed but has just been turned off - remove all FB contacts and posts
 284
 285                 if((! intval($no_linking)) && (! intval($linkvalue))) {
 286                         $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `network` = '%s' ",
 287                                 intval($uid),
 288                                 dbesc(NETWORK_FACEBOOK)
 289                         );
 290                         if(count($r)) {
 291                                 require_once('include/Contact.php');
 292                                 foreach($r as $rr)
 293                                         contact_remove($rr['id']);
 294                         }
 295                 }
 296                 elseif(intval($no_linking) && intval($linkvalue)) {
 297                         // FB linkage is now allowed - import stuff.
 298                         fb_get_self($uid);
 299                         fb_get_friends($uid);
 300                         fb_consume_all($uid);
 301                 }
 302
 303                 info( t('Settings updated.') . EOL);
 304         }
 305
 306         return;
 307 }
 308
 309 // Facebook settings form
 310
 311 function facebook_content(&$a) {
 312
 313         if(! local_user()) {
 314                 notice( t('Permission denied.') . EOL);
 315                 return '';
 316         }
 317
 318         if($a->argc > 1 && $a->argv[1] === 'remove') {
 319                 del_pconfig(local_user(),'facebook','post');
 320                 info( t('Facebook disabled') . EOL);
 321         }
 322
 323         if($a->argc > 1 && $a->argv[1] === 'friends') {
 324                 fb_get_friends(local_user());
 325                 info( t('Updating contacts') . EOL);
 326         }
 327
 328
 329         $fb_installed = get_pconfig(local_user(),'facebook','post');
 330
 331         $appid = get_config('facebook','appid');
 332
 333         if(! $appid) {
 334                 notice( t('Facebook API key is missing.') . EOL);
 335                 return '';
 336         }
 337
 338         $a->page['htmlhead'] .= '<link rel="stylesheet" type="text/css" href="'
 339                 . $a->get_baseurl() . '/addon/facebook/facebook.css' . '" media="all" />' . "\r\n";
 340
 341         $o .= '<h3>' . t('Facebook Connect') . '</h3>';
 342
 343         if(! $fb_installed) {
 344                 $o .= '<div id="facebook-enable-wrapper">';
 345
 346                 $o .= '<a href="https://www.facebook.com/dialog/oauth?client_id=' . $appid . '&redirect_uri='
 347                         . $a->get_baseurl() . '/facebook/' . $a->user['nickname'] . '&scope=publish_stream,read_stream,offline_access">' . t('Install Facebook connector for this account.') . '</a>';
 348                 $o .= '</div>';
 349         }
 350
 351         if($fb_installed) {
 352                 $o .= '<div id="facebook-disable-wrapper">';
 353
 354                 $o .= '<a href="' . $a->get_baseurl() . '/facebook/remove' . '">' . t('Remove Facebook connector') . '</a></div>';
 355
 356                 $o .= '<div id="facebook-post-default-form">';
 357                 $o .= '<form action="facebook" method="post" >';
 358                 $post_by_default = get_pconfig(local_user(),'facebook','post_by_default');
 359                 $checked = (($post_by_default) ? ' checked="checked" ' : '');
 360                 $o .= '<input type="checkbox" name="post_by_default" value="1"' . $checked . '/>' . ' ' . t('Post to Facebook by default') . EOL;
 361
 362                 $no_linking = get_pconfig(local_user(),'facebook','no_linking');
 363                 $checked = (($no_linking) ? '' : ' checked="checked" ');
 364                 $o .= '<input type="checkbox" name="facebook_linking" value="1"' . $checked . '/>' . ' ' . t('Link all your Facebook friends and conversations') . EOL ;
 365
 366                 $no_wall = get_pconfig(local_user(),'facebook','no_wall');
 367                 $checked = (($no_wall) ? ' checked="checked" ' : '');
 368                 $o .= '<input type="checkbox" name="facebook_no_wall" value="1"' . $checked . '/>' . ' ' . t('Do not link your Facebook profile wall posts - as these could be visible to people that would not be able to see them on Facebook.') . EOL ;
 369
 370
 371                 $o .= '<input type="submit" name="submit" value="' . t('Submit') . '" /></form></div>';
 372         }
 373
 374         return $o;
 375 }
 376
 377
 378
 379 function facebook_cron($a,$b) {
 380
 381         $last = get_config('facebook','last_poll');
 382
 383         $poll_interval = intval(get_config('facebook','poll_interval'));
 384         if(! $poll_interval)
 385                 $poll_interval = 3600;
 386
 387         if($last) {
 388                 $next = $last + $poll_interval;
 389                 if($next > time())
 390                         return;
 391         }
 392
 393         logger('facebook_cron');
 394
 395
 396         // Find the FB users on this site and randomize in case one of them
 397         // uses an obscene amount of memory. It may kill this queue run
 398         // but hopefully we'll get a few others through on each run.
 399
 400         $r = q("SELECT * FROM `pconfig` WHERE `cat` = 'facebook' AND `k` = 'post' AND `v` = '1' ORDER BY RAND() ");
 401         if(count($r)) {
 402                 foreach($r as $rr) {
 403                         if(get_pconfig($rr['uid'],'facebook','no_linking'))
 404                                 continue;
 405                         // check for new friends once a day
 406                         $last_friend_check = get_pconfig($rr['uid'],'facebook','friend_check');
 407                         if($last_friend_check)
 408                                 $next_friend_check = $last_friend_check + 86400;
 409                         if($next_friend_check <= time()) {
 410                                 fb_get_friends($rr['uid']);
 411                                 set_pconfig($rr['uid'],'facebook','friend_check',time());
 412                         }
 413                         fb_consume_all($rr['uid']);
 414                 }
 415         }
 416
 417         set_config('facebook','last_poll', time());
 418
 419 }
 420
 421
 422
 423 function facebook_plugin_settings(&$a,&$b) {
 424
 425         $b .= '<div class="settings-block">';
 426         $b .= '<h3>' . t('Facebook') . '</h3>';
 427         $b .= '<a href="facebook">' . t('Facebook Connector Settings') . '</a><br />';
 428         $b .= '</div>';
 429
 430 }
 431
 432 function facebook_jot_nets(&$a,&$b) {
 433         if(! local_user())
 434                 return;
 435
 436         $fb_post = get_pconfig(local_user(),'facebook','post');
 437         if(intval($fb_post) == 1) {
 438                 $fb_defpost = get_pconfig(local_user(),'facebook','post_by_default');
 439                 $selected = ((intval($fb_defpost) == 1) ? ' checked="checked" ' : '');
 440                 $b .= '<div class="profile-jot-net"><input type="checkbox" name="facebook_enable"' . $selected . 'value="1" /> '
 441                         . t('Post to Facebook') . '</div>';
 442         }
 443 }
 444
 445
 446 function facebook_post_hook(&$a,&$b) {
 447
 448         /**
 449          * Post to Facebook stream
 450          */
 451
 452         require_once('include/group.php');
 453
 454         logger('Facebook post');
 455
 456         $reply = false;
 457         $likes = false;
 458
 459         if((local_user()) && (local_user() == $b['uid'])) {
 460
 461                 // Facebook is not considered a private network
 462                 if($b['prvnets'] && $b['private'])
 463                         return;
 464
 465                 if($b['parent']) {
 466                         $r = q("SELECT * FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
 467                                 intval($b['parent']),
 468                                 intval(local_user())
 469                         );
 470                         if(count($r) && substr($r[0]['uri'],0,4) === 'fb::')
 471                                 $reply = substr($r[0]['uri'],4);
 472                         elseif(count($r) && substr($r[0]['extid'],0,4) === 'fb::')
 473                                 $reply = substr($r[0]['extid'],4);
 474                         else
 475                                 return;
 476                         logger('facebook reply id=' . $reply);
 477                 }
 478
 479                 if($b['private'] && $reply === false) {
 480                         $allow_people = expand_acl($b['allow_cid']);
 481                         $allow_groups = expand_groups(expand_acl($b['allow_gid']));
 482                         $deny_people  = expand_acl($b['deny_cid']);
 483                         $deny_groups  = expand_groups(expand_acl($b['deny_gid']));
 484
 485                         $recipients = array_unique(array_merge($allow_people,$allow_groups));
 486                         $deny = array_unique(array_merge($deny_people,$deny_groups));
 487
 488                         $allow_str = dbesc(implode(', ',$recipients));
 489                         if($allow_str) {
 490                                 $r = q("SELECT `notify` FROM `contact` WHERE `id` IN ( $allow_str ) AND `network` = 'face'");
 491                                 $allow_arr = array();
 492                                 if(count($r))
 493                                         foreach($r as $rr)
 494                                                 $allow_arr[] = $rr['notify'];
 495                         }
 496
 497                         $deny_str = dbesc(implode(', ',$deny));
 498                         if($deny_str) {
 499                                 $r = q("SELECT `notify` FROM `contact` WHERE `id` IN ( $deny_str ) AND `network` = 'face'");
 500                                 $deny_arr = array();
 501                                 if(count($r))
 502                                         foreach($r as $rr)
 503                                                 $deny_arr[] = $rr['notify'];
 504                         }
 505
 506                         if(count($deny_arr) && (! count($allow_arr))) {
 507
 508                                 // One or more FB folks were denied access but nobody on FB was specifically allowed access.
 509                                 // This might cause the post to be open to public on Facebook, but only to selected members
 510                                 // on another network. Since this could potentially leak a post to somebody who was denied,
 511                                 // we will skip posting it to Facebook with a slightly vague but relevant message that will
 512                                 // hopefully lead somebody to this code comment for a better explanation of what went wrong.
 513
 514                                 notice( t('Post to Facebook cancelled because of multi-network access permission conflict.') . EOL);
 515                                 return;
 516                         }
 517
 518
 519                         // if it's a private message but no Facebook members are allowed or denied, skip Facebook post
 520
 521                         if((! count($allow_arr)) && (! count($deny_arr)))
 522                                 return;
 523                 }
 524
 525                 if($b['verb'] == ACTIVITY_LIKE)
 526                         $likes = true;
 527
 528
 529                 $appid  = get_config('facebook', 'appid'  );
 530                 $secret = get_config('facebook', 'appsecret' );
 531
 532                 if($appid && $secret) {
 533
 534                         logger('facebook: have appid+secret');
 535
 536                         $fb_post   = intval(get_pconfig(local_user(),'facebook','post'));
 537                         $fb_enable = (($fb_post && x($_POST,'facebook_enable')) ? intval($_POST['facebook_enable']) : 0);
 538                         $fb_token  = get_pconfig(local_user(),'facebook','access_token');
 539
 540                         // if API is used, default to the chosen settings
 541                         if($_POST['api_source'] && intval(get_pconfig(local_user(),'facebook','post_by_default')))
 542                                 $fb_enable = 1;
 543
 544
 545
 546
 547                         logger('facebook: $fb_post: ' . $fb_post . ' $fb_enable: ' . $fb_enable . ' $fb_token: ' . $fb_token,LOGGER_DEBUG);
 548
 549                         // post to facebook if it's a public post and we've ticked the 'post to Facebook' box,
 550                         // or it's a private message with facebook participants
 551                         // or it's a reply or likes action to an existing facebook post
 552
 553                         if($fb_post && $fb_token && ($fb_enable || $b['private'] || $reply)) {
 554                                 logger('facebook: able to post');
 555                                 require_once('library/facebook.php');
 556                                 require_once('include/bbcode.php');
 557
 558                                 $msg = $b['body'];
 559
 560                                 logger('Facebook post: original msg=' . $msg, LOGGER_DATA);
 561
 562                                 // make links readable before we strip the code
 563
 564                                 // unless it's a dislike - just send the text as a comment
 565
 566                                 if($b['verb'] == ACTIVITY_DISLIKE)
 567                                         $msg = trim(strip_tags(bbcode($msg)));
 568
 569                                 $search_str = $a->get_baseurl() . '/search';
 570
 571                                 if(preg_match("/\[url=(.*?)\](.*?)\[\/url\]/is",$msg,$matches)) {
 572
 573                                         // don't use hashtags for message link
 574
 575                                         if(strpos($matches[2],$search_str) === false) {
 576                                                 $link = $matches[1];
 577                                                 if(substr($matches[2],0,5) != '[img]')
 578                                                         $linkname = $matches[2];
 579                                         }
 580                                 }
 581
 582                                 $msg = preg_replace("/\[url=(.*?)\](.*?)\[\/url\]/is",'$2 $1',$msg);
 583
 584                                 if(preg_match("/\[img\](.*?)\[\/img\]/is",$msg,$matches))
 585                                         $image = $matches[1];
 586
 587                                 $msg = preg_replace("/\[img\](.*?)\[\/img\]/is", t('Image: ') . '$1', $msg);
 588
 589                                 if((strpos($link,z_root()) !== false) && (! $image))
 590                                         $image = $a->get_baseurl() . '/images/friendika-64.jpg';
 591
 592                                 $msg = trim(strip_tags(bbcode($msg)));
 593                                 $msg = html_entity_decode($msg,ENT_QUOTES,'UTF-8');
 594
 595                                 // add any attachments as text urls
 596
 597                             $arr = explode(',',$b['attach']);
 598
 599                             if(count($arr)) {
 600                                         $msg .= "\n";
 601                                 foreach($arr as $r) {
 602                                 $matches = false;
 603                                                 $cnt = preg_match('|\[attach\]href=\"(.*?)\" size=\"(.*?)\" type=\"(.*?)\" title=\"(.*?)\"\[\/attach\]|',$r,$matches);
 604                                                 if($cnt) {
 605                                                         $msg .= $matches[1];
 606                                                 }
 607                                         }
 608                                 }
 609
 610                                 if (strlen($msg) > FACEBOOK_MAXPOSTLEN) {
 611                                         $shortlink = "";
 612                                         require_once('library/slinky.php');
 613
 614                                         $display_url = $a->get_baseurl() . '/display/' . $a->user['nickname'] . '/' . $b['id'];
 615                                         $slinky = new Slinky( $display_url );
 616                                         // setup a cascade of shortening services
 617                                         // try to get a short link from these services
 618                                         // in the order ur1.ca, trim, id.gd, tinyurl
 619                                         $slinky->set_cascade( array( new Slinky_UR1ca(), new Slinky_Trim(), new Slinky_IsGd(), new Slinky_TinyURL() ) );
 620                                         $shortlink = $slinky->short();
 621                                         // the new message will be shortened such that "... $shortlink"
 622                                         // will fit into the character limit
 623                                         $msg = substr($msg, 0, FACEBOOK_MAXPOSTLEN - strlen($shortlink) - 4);
 624                                         $msg .= '... ' . $shortlink;
 625                                 }
 626                                 if(! strlen($msg))
 627                                         return;
 628
 629                                 logger('Facebook post: msg=' . $msg, LOGGER_DATA);
 630
 631                                 if($likes) {
 632                                         $postvars = array('access_token' => $fb_token);
 633                                 }
 634                                 else {
 635                                         $postvars = array(
 636                                                 'access_token' => $fb_token,
 637                                                 'message' => $msg
 638                                         );
 639                                         if(isset($image))
 640                                                 $postvars['picture'] = $image;
 641                                         if(isset($link))
 642                                                 $postvars['link'] = $link;
 643                                         if(isset($linkname))
 644                                                 $postvars['name'] = $linkname;
 645                                 }
 646
 647                                 if(($b['private']) && (! $b['parent'])) {
 648                                         $postvars['privacy'] = '{"value": "CUSTOM", "friends": "SOME_FRIENDS"';
 649                                         if(count($allow_arr))
 650                                                 $postvars['privacy'] .= ',"allow": "' . implode(',',$allow_arr) . '"';
 651                                         if(count($deny_arr))
 652                                                 $postvars['privacy'] .= ',"deny": "' . implode(',',$deny_arr) . '"';
 653                                         $postvars['privacy'] .= '}';
 654
 655                                 }
 656
 657                                 if($reply) {
 658                                         $url = 'https://graph.facebook.com/' . $reply . '/' . (($likes) ? 'likes' : 'comments');
 659                                 }
 660                                 else {
 661                                         $url = 'https://graph.facebook.com/me/feed';
 662                                         if($b['plink'])
 663                                                 $postvars['actions'] = '{"name": "' . t('View on Friendika') . '", "link": "' .  $b['plink'] . '"}';
 664                                 }
 665
 666                                 logger('facebook: post to ' . $url);
 667                                 logger('facebook: postvars: ' . print_r($postvars,true));
 668
 669                                 // "test_mode" prevents anything from actually being posted.
 670                                 // Otherwise, let's do it.
 671
 672                                 if(! get_config('facebook','test_mode')) {
 673                                         $x = post_url($url, $postvars);
 674
 675                                         $retj = json_decode($x);
 676                                         if($retj->id) {
 677                                                 q("UPDATE `item` SET `extid` = '%s' WHERE `id` = %d LIMIT 1",
 678                                                         dbesc('fb::' . $retj->id),
 679                                                         intval($b['id'])
 680                                                 );
 681                                         }
 682                                         else {
 683                                                 if(! $likes) {
 684                                                         $s = serialize(array('url' => $url, 'item' => $b['id'], 'post' => $postvars));
 685                                                         q("INSERT INTO `queue` ( `network`, `cid`, `created`, `last`, `content`)
 686                                                                 VALUES ( '%s', %d, '%s', '%s', '%s') ",
 687                                                                 dbesc(NETWORK_FACEBOOK),
 688                                                                 intval($a->contact),
 689                                                                 dbesc(datetime_convert()),
 690                                                                 dbesc(datetime_convert()),
 691                                                                 dbesc($s)
 692                                                         );
 693
 694                                                         notice( t('Facebook post failed. Queued for retry.') . EOL);
 695                                                 }
 696                                         }
 697
 698                                         logger('Facebook post returns: ' . $x, LOGGER_DEBUG);
 699                                 }
 700                         }
 701                 }
 702         }
 703 }
 704
 705
 706 function fb_queue_hook(&$a,&$b) {
 707
 708         $qi = q("SELECT * FROM `queue` WHERE `network` = '%s'",
 709                 dbesc(NETWORK_FACEBOOK)
 710         );
 711         if(! count($qi))
 712                 return;
 713
 714         require_once('include/queue_fn.php');
 715
 716         foreach($qi as $x) {
 717                 if($x['network'] !== NETWORK_FACEBOOK)
 718                         continue;
 719
 720                 logger('facebook_queue: run');
 721
 722                 $r = q("SELECT `user`.* FROM `user` LEFT JOIN `contact` on `contact`.`uid` = `user`.`uid`
 723                         WHERE `contact`.`self` = 1 AND `contact`.`id` = %d LIMIT 1",
 724                         intval($x['cid'])
 725                 );
 726                 if(! count($r))
 727                         continue;
 728
 729                 $user = $r[0];
 730
 731                 $appid  = get_config('facebook', 'appid'  );
 732                 $secret = get_config('facebook', 'appsecret' );
 733
 734                 if($appid && $secret) {
 735                         $fb_post   = intval(get_pconfig($user['uid'],'facebook','post'));
 736                         $fb_token  = get_pconfig($user['uid'],'facebook','access_token');
 737
 738                         if($fb_post && $fb_token) {
 739                                 logger('facebook_queue: able to post');
 740                                 require_once('library/facebook.php');
 741
 742                                 $z = unserialize($x['content']);
 743                                 $item = $z['item'];
 744                                 $j = post_url($z['url'],$z['post']);
 745
 746                                 $retj = json_decode($j);
 747                                 if($retj->id) {
 748                                         q("UPDATE `item` SET `extid` = '%s' WHERE `id` = %d LIMIT 1",
 749                                                 dbesc('fb::' . $retj->id),
 750                                                 intval($item)
 751                                         );
 752                                         logger('facebook_queue: success: ' . $j);
 753                                         remove_queue_item($x['id']);
 754                                 }
 755                                 else {
 756                                         logger('facebook_queue: failed: ' . $j);
 757                                         update_queue_time($x['id']);
 758                                 }
 759                         }
 760                 }
 761         }
 762 }
 763
 764 function fb_consume_all($uid) {
 765
 766         require_once('include/items.php');
 767
 768         $access_token = get_pconfig($uid,'facebook','access_token');
 769         if(! $access_token)
 770                 return;
 771
 772         if(! get_pconfig($uid,'facebook','no_wall')) {
 773                 $s = fetch_url('https://graph.facebook.com/me/feed?access_token=' . $access_token);
 774                 if($s) {
 775                         $j = json_decode($s);
 776                         logger('fb_consume_stream: wall: ' . print_r($j,true), LOGGER_DATA);
 777                         fb_consume_stream($uid,$j,true);
 778                 }
 779         }
 780         $s = fetch_url('https://graph.facebook.com/me/home?access_token=' . $access_token);
 781         if($s) {
 782                 $j = json_decode($s);
 783                 logger('fb_consume_stream: feed: ' . print_r($j,true), LOGGER_DATA);
 784                 fb_consume_stream($uid,$j,false);
 785         }
 786
 787 }
 788
 789 function fb_consume_stream($uid,$j,$wall = false) {
 790         $a = get_app();
 791
 792         $no_linking = get_pconfig($uid,'facebook','no_linking');
 793         if($no_linking)
 794                 return;
 795
 796         $self = q("SELECT * FROM `contact` WHERE `self` = 1 AND `uid` = %d LIMIT 1",
 797                 intval($uid)
 798         );
 799
 800         $user = q("SELECT `nickname`, `blockwall` FROM `user` WHERE `uid` = %d LIMIT 1",
 801                 intval($uid)
 802         );
 803         if(count($user))
 804                 $my_local_url = $a->get_baseurl() . '/profile/' . $user[0]['nickname'];
 805
 806         $self_id = get_pconfig($uid,'facebook','self_id');
 807         if(! count($j->data) || (! strlen($self_id)))
 808                 return;
 809
 810         foreach($j->data as $entry) {
 811                 logger('fb_consume: entry: ' . print_r($entry,true), LOGGER_DATA);
 812                 $datarray = array();
 813
 814                 $r = q("SELECT * FROM `item` WHERE ( `uri` = '%s' OR `extid` = '%s') AND `uid` = %d LIMIT 1",
 815                                 dbesc('fb::' . $entry->id),
 816                                 dbesc('fb::' . $entry->id),
 817                                 intval($uid)
 818                 );
 819                 if(count($r)) {
 820                         $post_exists = true;
 821                         $orig_post = $r[0];
 822                         $top_item = $r[0]['id'];
 823                 }
 824                 else {
 825                         $post_exists = false;
 826                         $orig_post = null;
 827                 }
 828
 829                 if(! $orig_post) {
 830                         $datarray['gravity'] = 0;
 831                         $datarray['uid'] = $uid;
 832                         $datarray['wall'] = (($wall) ? 1 : 0);
 833                         $datarray['uri'] = $datarray['parent-uri'] = 'fb::' . $entry->id;
 834                         $from = $entry->from;
 835                         if($from->id == $self_id)
 836                                 $datarray['contact-id'] = $self[0]['id'];
 837                         else {
 838                                 $r = q("SELECT * FROM `contact` WHERE `notify` = '%s' AND `uid` = %d AND `blocked` = 0 AND `readonly` = 0 LIMIT 1",
 839                                         dbesc($from->id),
 840                                         intval($uid)
 841                                 );
 842                                 if(count($r))
 843                                         $datarray['contact-id'] = $r[0]['id'];
 844                         }
 845
 846                         // don't store post if we don't have a contact
 847
 848                         if(! x($datarray,'contact-id')) {
 849                                 logger('no contact: post ignored');
 850                                 continue;
 851                         }
 852
 853                         $datarray['verb'] = ACTIVITY_POST;
 854                         if($wall) {
 855                                 $datarray['owner-name'] = $self[0]['name'];
 856                                 $datarray['owner-link'] = $self[0]['url'];
 857                                 $datarray['owner-avatar'] = $self[0]['thumb'];
 858                         }
 859                         if(isset($entry->application) && isset($entry->application->name) && strlen($entry->application->name))
 860                                 $datarray['app'] = strip_tags($entry->application->name);
 861                         else
 862                                 $datarray['app'] = 'facebook';
 863                         $datarray['author-name'] = $from->name;
 864                         $datarray['author-link'] = 'http://facebook.com/profile.php?id=' . $from->id;
 865                         $datarray['author-avatar'] = 'https://graph.facebook.com/' . $from->id . '/picture';
 866                         $datarray['plink'] = $datarray['author-link'] . '&v=wall&story_fbid=' . substr($entry->id,strpos($entry->id,'_') + 1);
 867
 868                         $datarray['body'] = $entry->message;
 869                         if($entry->picture)
 870                                 $datarray['body'] .= "\n\n" . '[img]' . $entry->picture . '[/img]';
 871                         if($entry->link)
 872                                 $datarray['body'] .= "\n" . linkify($entry->link);
 873                         if($entry->name)
 874                                 $datarray['body'] .= "\n" . $entry->name;
 875                         if($entry->caption)
 876                                 $datarray['body'] .= "\n" . $entry->caption;
 877                         if($entry->description)
 878                                 $datarray['body'] .= "\n" . $entry->description;
 879                         $datarray['created'] = datetime_convert('UTC','UTC',$entry->created_time);
 880                         $datarray['edited'] = datetime_convert('UTC','UTC',$entry->updated_time);
 881
 882                         // If the entry has a privacy policy, we cannot assume who can or cannot see it,
 883                         // as the identities are from a foreign system. Mark it as private to the owner.
 884
 885                         if($entry->privacy && $entry->privacy->value !== 'EVERYONE') {
 886                                 $datarray['private'] = 1;
 887                                 $datarray['allow_cid'] = '<' . $uid . '>';
 888                         }
 889
 890                         $top_item = item_store($datarray);
 891                         $r = q("SELECT * FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
 892                                 intval($top_item),
 893                                 intval($uid)
 894                         );
 895                         if(count($r)) {
 896                                 $orig_post = $r[0];
 897                                 logger('fb: new top level item posted');
 898                         }
 899                 }
 900
 901                 if(isset($entry->likes) && isset($entry->likes->data))
 902                         $likers = $entry->likes->data;
 903                 else
 904                         $likers = null;
 905
 906                 if(isset($entry->comments) && isset($entry->comments->data))
 907                         $comments = $entry->comments->data;
 908                 else
 909                         $comments = null;
 910
 911                 if(is_array($likers)) {
 912                         foreach($likers as $likes) {
 913
 914                                 if(! $orig_post)
 915                                         continue;
 916
 917                                 // If we posted the like locally, it will be found with our url, not the FB url.
 918
 919                                 $second_url = (($likes->id == $self_id) ? $self[0]['url'] : 'http://facebook.com/profile.php?id=' . $likes->id);
 920
 921                                 $r = q("SELECT * FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `verb` = '%s'
 922                                         AND ( `author-link` = '%s' OR `author-link` = '%s' ) LIMIT 1",
 923                                         dbesc($orig_post['uri']),
 924                                         intval($uid),
 925                                         dbesc(ACTIVITY_LIKE),
 926                                         dbesc('http://facebook.com/profile.php?id=' . $likes->id),
 927                                         dbesc($second_url)
 928                                 );
 929
 930                                 if(count($r))
 931                                         continue;
 932
 933                                 $likedata = array();
 934                                 $likedata['parent'] = $top_item;
 935                                 $likedata['verb'] = ACTIVITY_LIKE;
 936                                 $likedata['gravity'] = 3;
 937                                 $likedata['uid'] = $uid;
 938                                 $likedata['wall'] = (($wall) ? 1 : 0);
 939                                 $likedata['uri'] = item_new_uri($a->get_baseurl(), $uid);
 940                                 $likedata['parent-uri'] = $orig_post['uri'];
 941                                 if($likes->id == $self_id)
 942                                         $likedata['contact-id'] = $self[0]['id'];
 943                                 else {
 944                                         $r = q("SELECT * FROM `contact` WHERE `notify` = '%s' AND `uid` = %d AND `blocked` = 0 AND `readonly` = 0 LIMIT 1",
 945                                                 dbesc($likes->id),
 946                                                 intval($uid)
 947                                         );
 948                                         if(count($r))
 949                                                 $likedata['contact-id'] = $r[0]['id'];
 950                                 }
 951                                 if(! x($likedata,'contact-id'))
 952                                         $likedata['contact-id'] = $orig_post['contact-id'];
 953
 954                                 $likedata['app'] = 'facebook';
 955                                 $likedata['verb'] = ACTIVITY_LIKE;
 956                                 $likedata['author-name'] = $likes->name;
 957                                 $likedata['author-link'] = 'http://facebook.com/profile.php?id=' . $likes->id;
 958                                 $likedata['author-avatar'] = 'https://graph.facebook.com/' . $likes->id . '/picture';
 959
 960                                 $author  = '[url=' . $likedata['author-link'] . ']' . $likedata['author-name'] . '[/url]';
 961                                 $objauthor =  '[url=' . $orig_post['author-link'] . ']' . $orig_post['author-name'] . '[/url]';
 962                                 $post_type = t('status');
 963                         $plink = '[url=' . $orig_post['plink'] . ']' . $post_type . '[/url]';
 964                                 $likedata['object-type'] = ACTIVITY_OBJ_NOTE;
 965
 966                                 $likedata['body'] = sprintf( t('%1$s likes %2$s\'s %3$s'), $author, $objauthor, $plink);
 967                                 $likedata['object'] = '<object><type>' . ACTIVITY_OBJ_NOTE . '</type><local>1</local>' .
 968                                         '<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>';
 969
 970                                 $item = item_store($likedata);
 971                         }
 972                 }
 973                 if(is_array($comments)) {
 974                         foreach($comments as $cmnt) {
 975
 976                                 if(! $orig_post)
 977                                         continue;
 978
 979                                 $r = q("SELECT * FROM `item` WHERE `uid` = %d AND ( `uri` = '%s' OR `extid` = '%s' ) LIMIT 1",
 980                                         intval($uid),
 981                                         dbesc('fb::' . $cmnt->id),
 982                                         dbesc('fb::' . $cmnt->id)
 983                                 );
 984                                 if(count($r))
 985                                         continue;
 986
 987                                 $cmntdata = array();
 988                                 $cmntdata['parent'] = $top_item;
 989                                 $cmntdata['verb'] = ACTIVITY_POST;
 990                                 $cmntdata['gravity'] = 6;
 991                                 $cmntdata['uid'] = $uid;
 992                                 $cmntdata['wall'] = (($wall) ? 1 : 0);
 993                                 $cmntdata['uri'] = 'fb::' . $cmnt->id;
 994                                 $cmntdata['parent-uri'] = $orig_post['uri'];
 995                                 if($cmnt->from->id == $self_id) {
 996                                         $cmntdata['contact-id'] = $self[0]['id'];
 997                                 }
 998                                 else {
 999                                         $r = q("SELECT * FROM `contact` WHERE `notify` = '%s' AND `uid` = %d LIMIT 1",
1000                                                 dbesc($cmnt->from->id),
1001                                                 intval($uid)
1002                                         );
1003                                         if(count($r)) {
1004                                                 $cmntdata['contact-id'] = $r[0]['id'];
1005                                                 if($r[0]['blocked'] || $r[0]['readonly'])
1006                                                         continue;
1007                                         }
1008                                 }
1009                                 if(! x($cmntdata,'contact-id'))
1010                                         $cmntdata['contact-id'] = $orig_post['contact-id'];
1011
1012                                 $cmntdata['app'] = 'facebook';
1013                                 $cmntdata['created'] = datetime_convert('UTC','UTC',$cmnt->created_time);
1014                                 $cmntdata['edited']  = datetime_convert('UTC','UTC',$cmnt->created_time);
1015                                 $cmntdata['verb'] = ACTIVITY_POST;
1016                                 $cmntdata['author-name'] = $cmnt->from->name;
1017                                 $cmntdata['author-link'] = 'http://facebook.com/profile.php?id=' . $cmnt->from->id;
1018                                 $cmntdata['author-avatar'] = 'https://graph.facebook.com/' . $cmnt->from->id . '/picture';
1019                                 $cmntdata['body'] = $cmnt->message;
1020                                 $item = item_store($cmntdata);
1021                         }
1022                 }
1023         }
1024 }
1025