include/items.php

   1 <?php
   2
   3 require_once('bbcode.php');
   4
   5 function get_feed_for(&$a, $dfrn_id, $owner_id, $last_update, $direction = 0) {
   6
   7
   8         // default permissions - anonymous user
   9
  10         $sql_extra = "
  11                 AND `allow_cid` = ''
  12                 AND `allow_gid` = ''
  13                 AND `deny_cid`  = ''
  14                 AND `deny_gid`  = ''
  15         ";
  16
  17         if(strlen($owner_id) && ! intval($owner_id)) {
  18                 $r = q("SELECT `uid`, `nickname` FROM `user` WHERE `nickname` = '%s' LIMIT 1",
  19                         dbesc($owner_id)
  20                 );
  21                 if(count($r)) {
  22                         $owner_id = $r[0]['uid'];
  23                         $owner_nick = $r[0]['nickname'];
  24                 }
  25         }
  26
  27         $r = q("SELECT * FROM `contact` WHERE `self` = 1 AND `uid` = %d LIMIT 1",
  28                 intval($owner_id)
  29         );
  30         if(count($r)) {
  31                 $owner = $r[0];
  32                 $owner['nickname'] = $owner_nick;
  33         }
  34         else
  35                 killme();
  36
  37         if($dfrn_id && $dfrn_id != '*') {
  38
  39                 $sql_extra = '';
  40                 switch($direction) {
  41                         case (-1):
  42                                 $sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id));
  43                                 $my_id = $dfrn_id;
  44                                 break;
  45                         case 0:
  46                                 $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  47                                 $my_id = '1:' . $dfrn_id;
  48                                 break;
  49                         case 1:
  50                                 $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  51                                 $my_id = '0:' . $dfrn_id;
  52                                 break;
  53                         default:
  54                                 return false;
  55                                 break; // NOTREACHED
  56                 }
  57
  58                 $r = q("SELECT * FROM `contact` WHERE `blocked` = 0 AND `pending` = 0 AND `contact`.`uid` = %d $sql_extra LIMIT 1",
  59                         intval($owner_id)
  60                 );
  61
  62                 if(! count($r))
  63                         return false;
  64
  65                 $contact = $r[0];
  66                 $groups = init_groups_visitor($contact['id']);
  67
  68                 if(count($groups)) {
  69                         for($x = 0; $x < count($groups); $x ++)
  70                                 $groups[$x] = '<' . intval($groups[$x]) . '>' ;
  71                         $gs = implode('|', $groups);
  72                 }
  73                 else
  74                         $gs = '<<>>' ; // Impossible to match
  75
  76                 $sql_extra = sprintf("
  77                         AND ( `allow_cid` = '' OR     `allow_cid` REGEXP '<%d>' )
  78                         AND ( `deny_cid`  = '' OR NOT `deny_cid`  REGEXP '<%d>' )
  79                         AND ( `allow_gid` = '' OR     `allow_gid` REGEXP '%s' )
  80                         AND ( `deny_gid`  = '' OR NOT `deny_gid`  REGEXP '%s')
  81                 ",
  82                         intval($contact['id']),
  83                         intval($contact['id']),
  84                         dbesc($gs),
  85                         dbesc($gs)
  86                 );
  87         }
  88
  89         if($dfrn_id === '' || $dfrn_id === '*')
  90                 $sort = 'DESC';
  91         else
  92                 $sort = 'ASC';
  93
  94         if(! strlen($last_update))
  95                 $last_update = 'now -30 days';
  96
  97         $check_date = datetime_convert('UTC','UTC',$last_update,'Y-m-d H:i:s');
  98
  99         $r = q("SELECT `item`.*, `item`.`id` AS `item_id`,
 100                 `contact`.`name`, `contact`.`photo`, `contact`.`url`,
 101                 `contact`.`name-date`, `contact`.`uri-date`, `contact`.`avatar-date`,
 102                 `contact`.`thumb`, `contact`.`dfrn-id`, `contact`.`self`,
 103                 `contact`.`id` AS `contact-id`, `contact`.`uid` AS `contact-uid`
 104                 FROM `item` LEFT JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
 105                 WHERE `item`.`uid` = %d AND `item`.`visible` = 1
 106                 AND `item`.`wall` = 1 AND `contact`.`blocked` = 0 AND `contact`.`pending` = 0
 107                 AND ( `item`.`edited` > '%s' OR `item`.`changed` > '%s' )
 108                 $sql_extra
 109                 ORDER BY `parent` %s, `created` ASC LIMIT 0, 300",
 110                 intval($owner_id),
 111                 dbesc($check_date),
 112                 dbesc($check_date),
 113                 dbesc($sort)
 114         );
 115
 116         // Will check further below if this actually returned results.
 117         // We will provide an empty feed in any case.
 118
 119         $items = $r;
 120
 121         $feed_template = load_view_file('view/atom_feed.tpl');
 122
 123         $atom = '';
 124
 125         $hub = get_config('system','huburl');
 126
 127         $hubxml = '';
 128         if(strlen($hub)) {
 129                 $hubs = explode(',', $hub);
 130                 if(count($hubs)) {
 131                         foreach($hubs as $h) {
 132                                 $h = trim($h);
 133                                 if(! strlen($h))
 134                                         continue;
 135                                 $hubxml .= '<link rel="hub" href="' . xmlify($h) . '" />' . "\n" ;
 136                         }
 137                 }
 138         }
 139
 140         $salmon = '<link rel="salmon" href="' . xmlify($a->get_baseurl() . '/salmon/' . $owner_nick) . '" />' . "\n" ;
 141         $salmon .= '<link rel="http://salmon-protocol.org/ns/salmon-replies" href="' . xmlify($a->get_baseurl() . '/salmon/' . $owner_nick) . '" />' . "\n" ;
 142         $salmon .= '<link rel="http://salmon-protocol.org/ns/salmon-mention" href="' . xmlify($a->get_baseurl() . '/salmon/' . $owner_nick) . '" />' . "\n" ;
 143
 144
 145         $atom .= replace_macros($feed_template, array(
 146                 '$feed_id'      => xmlify($a->get_baseurl() . '/profile/' . $owner_nick),
 147                 '$feed_title'   => xmlify($owner['name']),
 148                 '$feed_updated' => xmlify(datetime_convert('UTC', 'UTC', 'now' , ATOM_TIME)) ,
 149                 '$hub'          => $hubxml,
 150                 '$salmon'       => $salmon,
 151                 '$name'         => xmlify($owner['name']),
 152                 '$profile_page' => xmlify($owner['url']),
 153                 '$photo'        => xmlify($owner['photo']),
 154                 '$thumb'        => xmlify($owner['thumb']),
 155                 '$picdate'      => xmlify(datetime_convert('UTC','UTC',$owner['avatar-date'] . '+00:00' , ATOM_TIME)) ,
 156                 '$uridate'      => xmlify(datetime_convert('UTC','UTC',$owner['uri-date']    . '+00:00' , ATOM_TIME)) ,
 157                 '$namdate'      => xmlify(datetime_convert('UTC','UTC',$owner['name-date']   . '+00:00' , ATOM_TIME))
 158         ));
 159
 160
 161         if(! count($items)) {
 162                 $atom .= '</feed>' . "\r\n";
 163                 return $atom;
 164         }
 165
 166         foreach($items as $item) {
 167
 168                 // public feeds get html, our own nodes use bbcode
 169
 170                 if($dfrn_id === '*') {
 171                         $type = 'html';
 172                 }
 173                 else {
 174                         $type = 'text';
 175                 }
 176
 177                 $atom .= atom_entry($item,$type,null,$owner,true);
 178         }
 179
 180         $atom .= '</feed>' . "\r\n";
 181         return $atom;
 182 }
 183
 184
 185 function construct_verb($item) {
 186         if($item['verb'])
 187                 return $item['verb'];
 188         return ACTIVITY_POST;
 189 }
 190
 191 function construct_activity_object($item) {
 192
 193         if($item['object']) {
 194                 $o = '<as:object>' . "\r\n";
 195                 $r = @simplexml_load_string($item['object']);
 196                 if($r->type)
 197                         $o .= '<as:object-type>' . xmlify($r->type) . '</as:object-type>' . "\r\n";
 198                 if($r->id)
 199                         $o .= '<id>' . xmlify($r->id) . '</id>' . "\r\n";
 200                 if($r->title)
 201                         $o .= '<title>' . xmlify($r->title) . '</title>' . "\r\n";
 202                 if($r->link) {
 203                         if(substr($r->link,0,1) === '<')
 204                                 $o .= $r->link;
 205                         else
 206                                 $o .= '<link rel="alternate" type="text/html" href="' . xmlify($r->link) . '" />' . "\r\n";
 207                 }
 208                 if($r->content)
 209                         $o .= '<content type="html" >' . xmlify(bbcode($r->content)) . '</content>' . "\r\n";
 210                 $o .= '</as:object>' . "\r\n";
 211                 return $o;
 212         }
 213
 214         return '';
 215 }
 216
 217 function construct_activity_target($item) {
 218
 219         if($item['target']) {
 220                 $o = '<as:target>' . "\r\n";
 221                 $r = @simplexml_load_string($item['target']);
 222                 if($r->type)
 223                         $o .= '<as:object-type>' . xmlify($r->type) . '</as:object-type>' . "\r\n";
 224                 if($r->id)
 225                         $o .= '<id>' . xmlify($r->id) . '</id>' . "\r\n";
 226                 if($r->title)
 227                         $o .= '<title>' . xmlify($r->title) . '</title>' . "\r\n";
 228                 if($r->link) {
 229                         if(substr($r->link,0,1) === '<')
 230                                 $o .= $r->link;
 231                         else
 232                                 $o .= '<link rel="alternate" type="text/html" href="' . xmlify($r->link) . '" />' . "\r\n";
 233                 }
 234                 if($r->content)
 235                         $o .= '<content type="html" >' . xmlify(bbcode($r->content)) . '</content>' . "\r\n";
 236                 $o .= '</as:target>' . "\r\n";
 237                 return $o;
 238         }
 239
 240         return '';
 241 }
 242
 243
 244
 245
 246 function get_atom_elements($feed,$item) {
 247
 248         require_once('library/HTMLPurifier.auto.php');
 249         require_once('include/html2bbcode.php');
 250
 251         $best_photo = array();
 252
 253         $res = array();
 254
 255         $author = $item->get_author();
 256         $res['author-name'] = unxmlify($author->get_name());
 257         $res['author-link'] = unxmlify($author->get_link());
 258         $res['uri'] = unxmlify($item->get_id());
 259         $res['title'] = unxmlify($item->get_title());
 260         $res['body'] = unxmlify($item->get_content());
 261
 262
 263         // look for a photo. We should check media size and find the best one,
 264         // but for now let's just find any author photo
 265
 266         $rawauthor = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'author');
 267
 268         if($rawauthor && $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 269                 $base = $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 270                 foreach($base as $link) {
 271                         if(! $res['author-avatar']) {
 272                                 if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 273                                         $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 274                         }
 275                 }
 276         }
 277
 278         $rawactor = $item->get_item_tags(NAMESPACE_ACTIVITY, 'actor');
 279
 280         if($rawactor && activity_match($rawactor[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'],ACTIVITY_OBJ_PERSON)) {
 281                 $base = $rawactor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 282                 if($base && count($base)) {
 283                         foreach($base as $link) {
 284                                 if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 285                                         $res['author-link'] = unxmlify($link['attribs']['']['href']);
 286                                 if(! $res['author-avatar']) {
 287                                         if($link['attribs']['']['rel'] === 'avatar' || $link['attribs']['']['rel'] === 'photo')
 288                                                 $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 289                                 }
 290                         }
 291                 }
 292         }
 293
 294         // No photo/profile-link on the item - look at the feed level
 295
 296         if((! (x($res,'author-link'))) || (! (x($res,'author-avatar')))) {
 297                 $rawauthor = $feed->get_feed_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'author');
 298                 if($rawauthor && $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 299                         $base = $rawauthor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 300                         foreach($base as $link) {
 301                                 if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 302                                         $res['author-link'] = unxmlify($link['attribs']['']['href']);
 303                                 if(! $res['author-avatar']) {
 304                                         if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 305                                                 $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 306                                 }
 307                         }
 308                 }
 309
 310                 $rawactor = $feed->get_feed_tags(NAMESPACE_ACTIVITY, 'subject');
 311
 312                 if($rawactor && activity_match($rawactor[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'],ACTIVITY_OBJ_PERSON)) {
 313                         $base = $rawactor[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 314
 315                         if($base && count($base)) {
 316                                 foreach($base as $link) {
 317                                         if($link['attribs']['']['rel'] === 'alternate' && (! $res['author-link']))
 318                                                 $res['author-link'] = unxmlify($link['attribs']['']['href']);
 319                                         if(! (x($res,'author-avatar'))) {
 320                                                 if($link['attribs']['']['rel'] === 'avatar' || $link['attribs']['']['rel'] === 'photo')
 321                                                         $res['author-avatar'] = unxmlify($link['attribs']['']['href']);
 322                                         }
 323                                 }
 324                         }
 325                 }
 326         }
 327
 328
 329         $maxlen = get_max_import_size();
 330         if($maxlen && (strlen($res['body']) > $maxlen))
 331                 $res['body'] = substr($res['body'],0, $maxlen);
 332
 333         // It isn't certain at this point whether our content is plaintext or html and we'd be foolish to trust
 334         // the content type. Our own network only emits text normally, though it might have been converted to
 335         // html if we used a pubsubhubbub transport. But if we see even one html open tag in our text, we will
 336         // have to assume it is all html and needs to be purified.
 337
 338         // It doesn't matter all that much security wise - because before this content is used anywhere, we are
 339         // going to escape any tags we find regardless, but this lets us import a limited subset of html from
 340         // the wild, by sanitising it and converting supported tags to bbcode before we rip out any remaining
 341         // html.
 342
 343
 344         if(strpos($res['body'],'<')) {
 345
 346                 $res['body'] = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
 347                         '[youtube]$1[/youtube]', $res['body']);
 348
 349                 $config = HTMLPurifier_Config::createDefault();
 350                 $config->set('Cache.DefinitionImpl', null);
 351
 352                 // we shouldn't need a whitelist, because the bbcode converter
 353                 // will strip out any unsupported tags.
 354                 // $config->set('HTML.Allowed', 'p,b,a[href],i');
 355
 356                 $purifier = new HTMLPurifier($config);
 357                 $res['body'] = $purifier->purify($res['body']);
 358         }
 359
 360
 361         $res['body'] = html2bbcode($res['body']);
 362
 363
 364         $allow = $item->get_item_tags(NAMESPACE_DFRN,'comment-allow');
 365         if($allow && $allow[0]['data'] == 1)
 366                 $res['last-child'] = 1;
 367         else
 368                 $res['last-child'] = 0;
 369
 370         $rawcreated = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'published');
 371         if($rawcreated)
 372                 $res['created'] = unxmlify($rawcreated[0]['data']);
 373
 374         $rawlocation = $item->get_item_tags(NAMESPACE_DFRN, 'location');
 375         if($rawlocation)
 376                 $res['location'] = unxmlify($rawlocation[0]['data']);
 377
 378
 379         $rawedited = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'updated');
 380         if($rawedited)
 381                 $res['edited'] = unxmlify($rawcreated[0]['data']);
 382
 383         $rawowner = $item->get_item_tags(NAMESPACE_DFRN, 'owner');
 384         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'])
 385                 $res['owner-name'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']);
 386         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data'])
 387                 $res['owner-name'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data']);
 388         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'])
 389                 $res['owner-link'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']);
 390         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data'])
 391                 $res['owner-link'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data']);
 392
 393         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) {
 394                 $base = $rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'];
 395
 396                 foreach($base as $link) {
 397                         if(! $res['owner-avatar']) {
 398                                 if($link['attribs']['']['rel'] === 'photo' || $link['attribs']['']['rel'] === 'avatar')
 399                                         $res['owner-avatar'] = unxmlify($link['attribs']['']['href']);
 400                         }
 401                 }
 402         }
 403
 404         $rawgeo = $item->get_item_tags(NAMESPACE_GEORSS,'point');
 405         if($rawgeo)
 406                 $res['coord'] = unxmlify($rawgeo[0]['data']);
 407
 408
 409         $rawverb = $item->get_item_tags(NAMESPACE_ACTIVITY, 'verb');
 410         // select between supported verbs
 411         if($rawverb)
 412                 $res['verb'] = unxmlify($rawverb[0]['data']);
 413
 414         $rawobj = $item->get_item_tags(NAMESPACE_ACTIVITY, 'object');
 415
 416         if($rawobj) {
 417                 $res['object'] = '<object>' . "\n";
 418                 if($rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data']) {
 419                         $res['object-type'] = $rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'];
 420                         $res['object'] .= '<type>' . $rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'] . '</type>' . "\n";
 421                 }
 422                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'])
 423                         $res['object'] .= '<id>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'] . '</id>' . "\n";
 424                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'])
 425                         $res['object'] .= '<link>' . encode_rel_links($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) . '</link>' . "\n";
 426                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'])
 427                         $res['object'] .= '<title>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'] . '</title>' . "\n";
 428                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data']) {
 429                         $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data'];
 430                         if(! $body)
 431                                 $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['summary'][0]['data'];
 432                         if(strpos($body,'<')) {
 433
 434                                 $body = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
 435                                         '[youtube]$1[/youtube]', $body);
 436
 437                                 $config = HTMLPurifier_Config::createDefault();
 438                                 $config->set('Cache.DefinitionImpl', null);
 439
 440                                 $purifier = new HTMLPurifier($config);
 441                                 $body = $purifier->purify($body);
 442                         }
 443
 444                         $body = html2bbcode($body);
 445                         $res['object'] .= '<content>' . $body . '</content>' . "\n";
 446                 }
 447
 448                 $res['object'] .= '</object>' . "\n";
 449         }
 450
 451         $rawobj = $item->get_item_tags(NAMESPACE_ACTIVITY, 'target');
 452
 453         if($rawobj) {
 454                 $res['target'] = '<target>' . "\n";
 455                 if($rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data']) {
 456                         $res['target'] .= '<type>' . $rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'] . '</type>' . "\n";
 457                 }
 458                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'])
 459                         $res['target'] .= '<id>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'] . '</id>' . "\n";
 460
 461                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'])
 462                         $res['target'] .= '<link>' . encode_rel_links($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link']) . '</link>' . "\n";
 463                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'])
 464                         $res['target'] .= '<title>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'] . '</title>' . "\n";
 465                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data']) {
 466                         $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data'];
 467                         if(! $body)
 468                                 $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['summary'][0]['data'];
 469                         if(strpos($body,'<')) {
 470
 471                                 $body = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
 472                                         '[youtube]$1[/youtube]', $body);
 473
 474                                 $config = HTMLPurifier_Config::createDefault();
 475                                 $config->set('Cache.DefinitionImpl', null);
 476
 477                                 $purifier = new HTMLPurifier($config);
 478                                 $body = $purifier->purify($body);
 479                         }
 480
 481                         $body = html2bbcode($body);
 482                         $res['target'] .= '<content>' . $body . '</content>' . "\n";
 483                 }
 484
 485                 $res['target'] .= '</target>' . "\n";
 486         }
 487
 488         return $res;
 489 }
 490
 491 function encode_rel_links($links) {
 492         $o = '';
 493         if(! ((is_array($links)) && (count($links))))
 494                 return $o;
 495         foreach($links as $link) {
 496                 $o .= '<link ';
 497                 if($link['attribs']['']['rel'])
 498                         $o .= 'rel="' . $link['attribs']['']['rel'] . '" ';
 499                 if($link['attribs']['']['type'])
 500                         $o .= 'type="' . $link['attribs']['']['type'] . '" ';
 501                 if($link['attribs']['']['href'])
 502                         $o .= 'type="' . $link['attribs']['']['href'] . '" ';
 503                 if( (x($link['attribs'],NAMESPACE_MEDIA)) && $link['attribs'][NAMESPACE_MEDIA]['width'])
 504                         $o .= 'media:width="' . $link['attribs'][NAMESPACE_MEDIA]['width'] . '" ';
 505                 if( (x($link['attribs'],NAMESPACE_MEDIA)) && $link['attribs'][NAMESPACE_MEDIA]['height'])
 506                         $o .= 'media:height="' . $link['attribs'][NAMESPACE_MEDIA]['height'] . '" ';
 507                 $o .= ' />' . "\n" ;
 508         }
 509         return xmlify($o);
 510 }
 511
 512 function item_store($arr) {
 513
 514         if($arr['gravity'])
 515                 $arr['gravity'] = intval($arr['gravity']);
 516         elseif($arr['parent-uri'] == $arr['uri'])
 517                 $arr['gravity'] = 0;
 518         elseif(activity_match($arr['verb'],ACTIVITY_POST))
 519                 $arr['gravity'] = 6;
 520         else
 521                 $arr['gravity'] = 6;   // extensible catchall
 522
 523         if(! x($arr,'type'))
 524                 $arr['type']      = 'remote';
 525         $arr['wall']          = ((x($arr,'wall'))          ? intval($arr['wall'])                : 0);
 526         $arr['uri']           = ((x($arr,'uri'))           ? notags(trim($arr['uri']))           : random_string());
 527         $arr['author-name']   = ((x($arr,'author-name'))   ? notags(trim($arr['author-name']))   : '');
 528         $arr['author-link']   = ((x($arr,'author-link'))   ? notags(trim($arr['author-link']))   : '');
 529         $arr['author-avatar'] = ((x($arr,'author-avatar')) ? notags(trim($arr['author-avatar'])) : '');
 530         $arr['owner-name']    = ((x($arr,'owner-name'))    ? notags(trim($arr['owner-name']))    : '');
 531         $arr['owner-link']    = ((x($arr,'owner-link'))    ? notags(trim($arr['owner-link']))    : '');
 532         $arr['owner-avatar']  = ((x($arr,'owner-avatar'))  ? notags(trim($arr['owner-avatar']))  : '');
 533         $arr['created']       = ((x($arr,'created') !== false) ? datetime_convert('UTC','UTC',$arr['created']) : datetime_convert());
 534         $arr['edited']        = ((x($arr,'edited')  !== false) ? datetime_convert('UTC','UTC',$arr['edited'])  : datetime_convert());
 535         $arr['changed']       = datetime_convert();
 536         $arr['title']         = ((x($arr,'title'))         ? notags(trim($arr['title']))         : '');
 537         $arr['location']      = ((x($arr,'location'))      ? notags(trim($arr['location']))      : '');
 538         $arr['coord']         = ((x($arr,'coord'))         ? notags(trim($arr['coord']))         : '');
 539         $arr['body']          = ((x($arr,'body'))          ? escape_tags(trim($arr['body']))     : '');
 540         $arr['last-child']    = ((x($arr,'last-child'))    ? intval($arr['last-child'])          : 0 );
 541         $arr['visible']       = ((x($arr,'visible') !== false) ? intval($arr['visible'])         : 1 );
 542         $arr['deleted']       = 0;
 543         $arr['parent-uri']    = ((x($arr,'parent-uri'))    ? notags(trim($arr['parent-uri']))    : '');
 544         $arr['verb']          = ((x($arr,'verb'))          ? notags(trim($arr['verb']))          : '');
 545         $arr['object-type']   = ((x($arr,'object-type'))   ? notags(trim($arr['object-type']))   : '');
 546         $arr['object']        = ((x($arr,'object'))        ? trim($arr['object'])                : '');
 547         $arr['target-type']   = ((x($arr,'target-type'))   ? notags(trim($arr['target-type']))   : '');
 548         $arr['target']        = ((x($arr,'target'))        ? trim($arr['target'])                : '');
 549         $arr['allow_cid']     = ((x($arr,'allow_cid'))     ? trim($arr['allow_cid'])             : '');
 550         $arr['allow_gid']     = ((x($arr,'allow_gid'))     ? trim($arr['allow_gid'])             : '');
 551         $arr['deny_cid']      = ((x($arr,'deny_cid'))      ? trim($arr['deny_cid'])              : '');
 552         $arr['deny_gid']      = ((x($arr,'deny_gid'))      ? trim($arr['deny_gid'])              : '');
 553
 554
 555
 556         if($arr['parent-uri'] === $arr['uri']) {
 557                 $parent_id = 0;
 558                 $allow_cid = $arr['allow_cid'];
 559                 $allow_gid = $arr['allow_gid'];
 560                 $deny_cid  = $arr['deny_cid'];
 561                 $deny_gid  = $arr['deny_gid'];
 562         }
 563         else {
 564
 565                 // find the parent and snarf the item id and ACL's
 566
 567                 $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 568                         dbesc($arr['parent-uri']),
 569                         intval($arr['uid'])
 570                 );
 571
 572                 if(count($r)) {
 573                         $parent_id = $r[0]['id'];
 574                         $allow_cid = $r[0]['allow_cid'];
 575                         $allow_gid = $r[0]['allow_gid'];
 576                         $deny_cid  = $r[0]['deny_cid'];
 577                         $deny_gid  = $r[0]['deny_gid'];
 578                 }
 579                 else {
 580                         logger('item_store: item parent was not found - ignoring item');
 581                         return 0;
 582                 }
 583         }
 584
 585         dbesc_array($arr);
 586
 587         logger('item_store: ' . print_r($arr,true), LOGGER_DATA);
 588
 589         $r = dbq("INSERT INTO `item` (`"
 590                         . implode("`, `", array_keys($arr))
 591                         . "`) VALUES ('"
 592                         . implode("', '", array_values($arr))
 593                         . "')" );
 594
 595         // find the item we just created
 596
 597         $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 598                 $arr['uri'],           // already dbesc'd
 599                 intval($arr['uid'])
 600         );
 601         if(count($r)) {
 602                 $current_post = $r[0]['id'];
 603                 logger('item_store: created item ' . $current_post);
 604         }
 605         else {
 606                 logger('item_store: could not locate created item');
 607                 return 0;
 608         }
 609
 610         if($arr['parent-uri'] === $arr['uri'])
 611                 $parent_id = $current_post;
 612
 613         // Set parent id - and also make sure to inherit the parent's ACL's.
 614
 615         $r = q("UPDATE `item` SET `parent` = %d, `allow_cid` = '%s', `allow_gid` = '%s',
 616                 `deny_cid` = '%s', `deny_gid` = '%s' WHERE `id` = %d LIMIT 1",
 617                 intval($parent_id),
 618                 dbesc($allow_cid),
 619                 dbesc($allow_gid),
 620                 dbesc($deny_cid),
 621                 dbesc($deny_gid),
 622                 intval($current_post)
 623         );
 624
 625         return $current_post;
 626 }
 627
 628 function get_item_contact($item,$contacts) {
 629         if(! count($contacts) || (! is_array($item)))
 630                 return false;
 631         foreach($contacts as $contact) {
 632                 if($contact['id'] == $item['contact-id']) {
 633                         return $contact;
 634                         break; // NOTREACHED
 635                 }
 636         }
 637         return false;
 638 }
 639
 640
 641 function dfrn_deliver($owner,$contact,$atom) {
 642
 643
 644         if((! strlen($contact['dfrn-id'])) && (! $contact['duplex']) && (! ($owner['page-flags'] == PAGE_COMMUNITY)))
 645                 return 3;
 646
 647         $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
 648
 649         if($contact['duplex'] && $contact['dfrn-id'])
 650                 $idtosend = '0:' . $orig_id;
 651         if($contact['duplex'] && $contact['issued-id'])
 652                 $idtosend = '1:' . $orig_id;
 653
 654         $url = $contact['notify'] . '?dfrn_id=' . $idtosend . '&dfrn_version=' . DFRN_PROTOCOL_VERSION ;
 655
 656         logger('dfrn_deliver: ' . $url);
 657
 658         $xml = fetch_url($url);
 659
 660         logger('dfrn_deliver: ' . $xml);
 661
 662         if(! $xml)
 663                 return 3;
 664
 665         $res = simplexml_load_string($xml);
 666
 667         if((intval($res->status) != 0) || (! strlen($res->challenge)) || (! strlen($res->dfrn_id)))
 668                 return (($res->status) ? $res->status : 3);
 669
 670         $postvars     = array();
 671         $sent_dfrn_id = hex2bin($res->dfrn_id);
 672         $challenge    = hex2bin($res->challenge);
 673
 674         $final_dfrn_id = '';
 675
 676
 677         if(($contact['duplex'] && strlen($contact['prvkey'])) || ($owner['page-flags'] == PAGE_COMMUNITY)) {
 678                 openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
 679                 openssl_private_decrypt($challenge,$postvars['challenge'],$contact['prvkey']);
 680         }
 681         else {
 682                 openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
 683                 openssl_public_decrypt($challenge,$postvars['challenge'],$contact['pubkey']);
 684         }
 685
 686         $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
 687
 688         if(strpos($final_dfrn_id,':') == 1)
 689                 $final_dfrn_id = substr($final_dfrn_id,2);
 690
 691         if($final_dfrn_id != $orig_id) {
 692                 logger('dfrn_deliver: wrong dfrn_id.');
 693                 // did not decode properly - cannot trust this site
 694                 return 3;
 695         }
 696
 697         $postvars['dfrn_id']      = $idtosend;
 698         $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
 699
 700         if(($contact['rel']) && ($contact['rel'] != REL_FAN) && (! $contact['blocked']) && (! $contact['readonly'])) {
 701                 $postvars['data'] = $atom;
 702         }
 703         elseif($owner['page-flags'] == PAGE_COMMUNITY) {
 704                 $postvars['data'] = $atom;
 705         }
 706         else {
 707                 $postvars['data'] = str_replace('<dfrn:comment-allow>1','<dfrn:comment-allow>0',$atom);
 708         }
 709
 710         $xml = post_url($contact['notify'],$postvars);
 711
 712         logger('dfrn_deliver: ' . "SENDING: " . print_r($postvars,true) . "\n" . "RECEIVING: " . $xml, LOGGER_DATA);
 713
 714         if(! strlen($xml))
 715                 return(-1);
 716
 717         $res = simplexml_load_string($xml);
 718
 719         return $res->status;
 720
 721 }
 722
 723
 724 /*
 725  *
 726  * consume_feed - process atom feed and update anything/everything we might need to update
 727  *
 728  * $xml = the (atom) feed to consume - no RSS spoken here, it might partially work since simplepie
 729  *        handles both, but we don't claim it will work well, and are reasonably certain it won't.
 730  * $importer = the contact_record (joined to user_record) of the local user who owns this relationship.
 731  *             It is this person's stuff that is going to be updated.
 732  * $contact =  the person who is sending us stuff. If not set, we MAY be processing a "follow" activity
 733  *             from an external network and MAY create an appropriate contact record. Otherwise, we MUST
 734  *             have a contact record.
 735  * $hub = should wefind ahub declation in the feed, pass it back to our calling process, who might (or
 736  *        might not) try and subscribe to it.
 737  *
 738  */
 739
 740 function consume_feed($xml,$importer,$contact, &$hub, $datedir = 0) {
 741
 742         require_once('simplepie/simplepie.inc');
 743
 744         $feed = new SimplePie();
 745         $feed->set_raw_data($xml);
 746         if($datedir)
 747                 $feed->enable_order_by_date(true);
 748         else
 749                 $feed->enable_order_by_date(false);
 750         $feed->init();
 751
 752         // Check at the feed level for updated contact name and/or photo
 753         $debugging = get_config('system','debugging');
 754
 755         $name_updated  = '';
 756         $new_name = '';
 757         $photo_timestamp = '';
 758         $photo_url = '';
 759
 760
 761         $hubs = $feed->get_links('hub');
 762
 763         if(count($hubs))
 764                 $hub = implode(',', $hubs);
 765
 766         $rawtags = $feed->get_feed_tags( SIMPLEPIE_NAMESPACE_ATOM_10, 'author');
 767         if($rawtags) {
 768                 $elems = $rawtags[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10];
 769                 if($elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated']) {
 770                         $name_updated = $elems['name'][0]['attribs'][NAMESPACE_DFRN]['updated'];
 771                         $new_name = $elems['name'][0]['data'];
 772                 }
 773                 if((x($elems,'link')) && ($elems['link'][0]['attribs']['']['rel'] === 'photo') && ($elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated'])) {
 774                         $photo_timestamp = datetime_convert('UTC','UTC',$elems['link'][0]['attribs'][NAMESPACE_DFRN]['updated']);
 775                         $photo_url = $elems['link'][0]['attribs']['']['href'];
 776                 }
 777         }
 778
 779         if((is_array($contact)) && ($photo_timestamp) && (strlen($photo_url)) && ($photo_timestamp > $contact['avatar-date'])) {
 780                 logger('Consume feed: Updating photo for ' . $contact['name']);
 781                 require_once("Photo.php");
 782                 $photo_failure = false;
 783                 $have_photo = false;
 784
 785                 $r = q("SELECT `resource-id` FROM `photo` WHERE `contact-id` = %d AND `uid` = %d LIMIT 1",
 786                         intval($contact['id']),
 787                         intval($contact['uid'])
 788                 );
 789                 if(count($r)) {
 790                         $resource_id = $r[0]['resource-id'];
 791                         $have_photo = true;
 792                 }
 793                 else {
 794                         $resource_id = photo_new_resource();
 795                 }
 796
 797                 $img_str = fetch_url($photo_url,true);
 798                 $img = new Photo($img_str);
 799                 if($img->is_valid()) {
 800                         if($have_photo) {
 801                                 q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `contact-id` = %d AND `uid` = %d",
 802                                         dbesc($resource_id),
 803                                         intval($contact['id']),
 804                                         intval($contact['uid'])
 805                                 );
 806                         }
 807
 808                         $img->scaleImageSquare(175);
 809
 810                         $hash = $resource_id;
 811                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), t('Contact Photos') , 4);
 812
 813                         $img->scaleImage(80);
 814                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), t('Contact Photos') , 5);
 815
 816                         $img->scaleImage(48);
 817                         $r = $img->store($contact['uid'], $contact['id'], $hash, basename($photo_url), t('Contact Photos') , 6);
 818
 819                         $a = get_app();
 820
 821                         q("UPDATE `contact` SET `avatar-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s'
 822                                 WHERE `uid` = %d AND `id` = %d LIMIT 1",
 823                                 dbesc(datetime_convert()),
 824                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-4.jpg'),
 825                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-5.jpg'),
 826                                 dbesc($a->get_baseurl() . '/photo/' . $hash . '-6.jpg'),
 827                                 intval($contact['uid']),
 828                                 intval($contact['id'])
 829                         );
 830                 }
 831         }
 832
 833         if((is_array($contact)) && ($name_updated) && (strlen($new_name)) && ($name_updated > $contact['name-date'])) {
 834                 q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s' WHERE `uid` = %d AND `id` = %d LIMIT 1",
 835                         dbesc(notags(trim($new_name))),
 836                         dbesc(datetime_convert()),
 837                         intval($contact['uid']),
 838                         intval($contact['id'])
 839                 );
 840         }
 841
 842         // Now process the feed
 843         if($feed->get_item_quantity()) {
 844                 foreach($feed->get_items() as $item) {
 845
 846                         $deleted = false;
 847
 848                         $rawdelete = $item->get_item_tags( NAMESPACE_TOMB, 'deleted-entry');
 849                         if(isset($rawdelete[0]['attribs']['']['ref'])) {
 850                                 $uri = $rawthread[0]['attribs']['']['ref'];
 851                                 $deleted = true;
 852                                 if(isset($rawdelete[0]['attribs']['']['when'])) {
 853                                         $when = $rawthread[0]['attribs']['']['when'];
 854                                         $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
 855                                 }
 856                                 else
 857                                         $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
 858                         }
 859                         if($deleted && is_array($contact)) {
 860                                 $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d AND `contact-id` = %d LIMIT 1",
 861                                         dbesc($uri),
 862                                         intval($importer['uid']),
 863                                         intval($contact['id'])
 864                                 );
 865                                 if(count($r)) {
 866                                         $item = $r[0];
 867                                         if($item['uri'] == $item['parent-uri']) {
 868                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
 869                                                         `body` = '', `title` = ''
 870                                                         WHERE `parent-uri` = '%s' AND `uid` = %d",
 871                                                         dbesc($when),
 872                                                         dbesc(datetime_convert()),
 873                                                         dbesc($item['uri']),
 874                                                         intval($importer['uid'])
 875                                                 );
 876                                         }
 877                                         else {
 878                                                 $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s',
 879                                                         `body` = '', `title` = ''
 880                                                         WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 881                                                         dbesc($when),
 882                                                         dbesc(datetime_convert()),
 883                                                         dbesc($uri),
 884                                                         intval($importer['uid'])
 885                                                 );
 886                                                 if($item['last-child']) {
 887                                                         // ensure that last-child is set in case the comment that had it just got wiped.
 888                                                         $q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
 889                                                                 dbesc(datetime_convert()),
 890                                                                 dbesc($item['parent-uri']),
 891                                                                 intval($item['uid'])
 892                                                         );
 893                                                         // who is the last child now?
 894                                                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d
 895                                                                 ORDER BY `created` DESC LIMIT 1",
 896                                                                         dbesc($item['parent-uri']),
 897                                                                         intval($importer['uid'])
 898                                                         );
 899                                                         if(count($r)) {
 900                                                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d LIMIT 1",
 901                                                                         intval($r[0]['id'])
 902                                                                 );
 903                                                         }
 904                                                 }
 905                                         }
 906                                 }
 907                                 continue;
 908                         }
 909
 910
 911                         $is_reply = false;
 912                         $item_id = $item->get_id();
 913                         $rawthread = $item->get_item_tags( NAMESPACE_THREAD,'in-reply-to');
 914                         if(isset($rawthread[0]['attribs']['']['ref'])) {
 915                                 $is_reply = true;
 916                                 $parent_uri = $rawthread[0]['attribs']['']['ref'];
 917                         }
 918
 919
 920                         if(($is_reply) && is_array($contact)) {
 921
 922                                 // Have we seen it? If not, import it.
 923
 924                                 $item_id = $item->get_id();
 925
 926                                 $r = q("SELECT `uid`, `last-child`, `edited` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 927                                         dbesc($item_id),
 928                                         intval($importer['uid'])
 929                                 );
 930                                 // FIXME update content if 'updated' changes
 931                                 if(count($r)) {
 932                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
 933                                         if(($allow) && ($allow[0]['data'] != $r[0]['last-child'])) {
 934                                                 $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
 935                                                         dbesc(datetime_convert()),
 936                                                         dbesc($parent_uri),
 937                                                         intval($importer['uid'])
 938                                                 );
 939                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s'  WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 940                                                         intval($allow[0]['data']),
 941                                                         dbesc(datetime_convert()),
 942                                                         dbesc($item_id),
 943                                                         intval($importer['uid'])
 944                                                 );
 945                                         }
 946                                         continue;
 947                                 }
 948                                 $datarray = get_atom_elements($feed,$item);
 949                                 if($contact['network'] === 'stat') {
 950                                         if(strlen($datarray['title']))
 951                                                 unset($datarray['title']);
 952                                         $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d",
 953                                                 dbesc(datetime_convert()),
 954                                                 dbesc($parent_uri),
 955                                                 intval($importer['uid'])
 956                                         );
 957                                         $datarray['last-child'] = 1;
 958                                 }
 959                                 $datarray['parent-uri'] = $parent_uri;
 960                                 $datarray['uid'] = $importer['uid'];
 961                                 $datarray['contact-id'] = $contact['id'];
 962                                 if((activity_match($datarray['verb'],ACTIVITY_LIKE)) || (activity_match($datarray['verb'],ACTIVITY_DISLIKE))) {
 963                                         $datarray['type'] = 'activity';
 964                                         $datarray['gravity'] = GRAVITY_LIKE;
 965                                 }
 966
 967                                 $r = item_store($datarray);
 968                                 continue;
 969                         }
 970
 971                         else {
 972                                 // Head post of a conversation. Have we seen it? If not, import it.
 973
 974                                 $item_id = $item->get_id();
 975                                 $r = q("SELECT `uid`, `last-child`, `edited` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 976                                         dbesc($item_id),
 977                                         intval($importer['uid'])
 978                                 );
 979                                 if(count($r)) {
 980                                         $allow = $item->get_item_tags( NAMESPACE_DFRN, 'comment-allow');
 981                                         if($allow && $allow[0]['data'] != $r[0]['last-child']) {
 982                                                 $r = q("UPDATE `item` SET `last-child` = %d , `changed` = '%s' WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 983                                                         intval($allow[0]['data']),
 984                                                         dbesc(datetime_convert()),
 985                                                         dbesc($item_id),
 986                                                         intval($importer['uid'])
 987                                                 );
 988                                         }
 989                                         continue;
 990                                 }
 991                                 $datarray = get_atom_elements($feed,$item);
 992
 993                                 if(activity_match($datarray['verb'],ACTIVITY_FOLLOW)) {
 994                                         logger('consume-feed: New follower');
 995                                         new_follower($importer,$contact,$datarray,$item);
 996                                         return;
 997                                 }
 998                                 if(activity_match($datarray['verb'],ACTIVITY_UNFOLLOW))  {
 999                                         lose_follower($importer,$contact,$datarray,$item);
1000                                         return;
1001                                 }
1002                                 if(! is_array($contact))
1003                                         return;
1004
1005                                 if($contact['network'] === 'stat') {
1006                                         if(strlen($datarray['title']))
1007                                                 unset($datarray['title']);
1008                                         $datarray['last-child'] = 1;
1009                                 }
1010
1011                                 $datarray['parent-uri'] = $item_id;
1012                                 $datarray['uid'] = $importer['uid'];
1013                                 $datarray['contact-id'] = $contact['id'];
1014                                 $r = item_store($datarray);
1015                                 continue;
1016
1017                         }
1018                 }
1019         }
1020
1021 }
1022
1023 function new_follower($importer,$contact,$datarray,$item) {
1024         $url = notags(trim($datarray['author-link']));
1025         $name = notags(trim($datarray['author-name']));
1026         $photo = notags(trim($datarray['author-avatar']));
1027
1028         $rawtag = $item->get_item_tags(NAMESPACE_ACTIVITY,'actor');
1029         if($rawtag && $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'])
1030                 $nick = $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'];
1031
1032         if(is_array($contact)) {
1033                 if($contact['network'] == 'stat' && $contact['rel'] == REL_FAN) {
1034                         $r = q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d AND `uid` = %d LIMIT 1",
1035                                 intval(REL_BUD),
1036                                 intval($contact['id']),
1037                                 intval($importer['uid'])
1038                         );
1039                 }
1040
1041                 // send email notification to owner?
1042         }
1043         else {
1044
1045                 // create contact record - set to readonly
1046
1047                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `name`, `nick`, `photo`, `network`, `rel`,
1048                         `blocked`, `readonly`, `pending` )
1049                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 1, 1 ) ",
1050                         intval($importer['uid']),
1051                         dbesc(datetime_convert()),
1052                         dbesc($url),
1053                         dbesc($name),
1054                         dbesc($nick),
1055                         dbesc($photo),
1056                         dbesc('stat'),
1057                         intval(REL_VIP)
1058                 );
1059                 $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `pending` = 1 AND `rel` = %d LIMIT 1",
1060                                 intval($importer['uid']),
1061                                 dbesc($url),
1062                                 intval(REL_VIP)
1063                 );
1064                 if(count($r))
1065                                 $contact_record = $r[0];
1066
1067                 // create notification
1068                 $hash = random_string();
1069
1070                 if(is_array($contact_record)) {
1071                         $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `hash`, `datetime`)
1072                                 VALUES ( %d, %d, 0, 0, '%s', '%s' )",
1073                                 intval($importer['uid']),
1074                                 intval($contact_record['id']),
1075                                 dbesc($hash),
1076                                 dbesc(datetime_convert())
1077                         );
1078                 }
1079                 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
1080                         intval($importer['uid'])
1081                 );
1082                 if(count($r)) {
1083                         if(($r[0]['notify-flags'] & NOTIFY_INTRO) && ($r[0]['page-flags'] == PAGE_NORMAL)) {
1084                                 $email_tpl = load_view_file('view/follow_notify_eml.tpl');
1085                                 $email = replace_macros($email_tpl, array(
1086                                         '$requestor' => ((strlen($name)) ? $name : t('[Name Withheld]')),
1087                                         '$url' => $url,
1088                                         '$myname' => $r[0]['username'],
1089                                         '$siteurl' => $a->get_baseurl(),
1090                                         '$sitename' => $a->config['sitename']
1091                                 ));
1092                                 $res = mail($r[0]['email'],
1093                                         t("You have a new follower at ") . $a->config['sitename'],
1094                                         $email,
1095                                         'From: ' . t('Administrator') . '@' . $_SERVER['SERVER_NAME'] );
1096
1097                         }
1098                 }
1099         }
1100 }
1101
1102 function lose_follower($importer,$contact,$datarray,$item) {
1103
1104         if(($contact['rel'] == REL_BUD) || ($contact['rel'] == REL_FAN)) {
1105                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d LIMIT 1",
1106                         intval(REL_FAN),
1107                         intval($contact['id'])
1108                 );
1109         }
1110         else {
1111                 contact_remove($contact['id']);
1112         }
1113 }
1114
1115
1116 function subscribe_to_hub($url,$importer,$contact) {
1117
1118         if(is_array($importer)) {
1119                 $r = q("SELECT `nickname` FROM `user` WHERE `uid` = %d LIMIT 1",
1120                         intval($importer['uid'])
1121                 );
1122         }
1123         if(! count($r))
1124                 return;
1125
1126         $push_url = get_config('system','url') . '/pubsub/' . $r[0]['nickname'] . '/' . $contact['id'];
1127
1128         // Use a single verify token, even if multiple hubs
1129
1130         $verify_token = ((strlen($contact['hub-verify'])) ? $contact['hub-verify'] : random_string());
1131
1132         $params= 'hub.mode=subscribe&hub.callback=' . urlencode($push_url) . '&hub.topic=' . urlencode($contact['poll']) . '&hub.verify=async&hub.verify_token=' . $verify_token;
1133
1134         logger('subscribe_to_hub: subscribing ' . $contact['name'] . ' to hub ' . $url . ' with verifier ' . $verify_token);
1135
1136         if(! strlen($contact['hub-verify'])) {
1137                 $r = q("UPDATE `contact` SET `hub-verify` = '%s' WHERE `id` = %d LIMIT 1",
1138                         dbesc($verify_token),
1139                         intval($contact['id'])
1140                 );
1141         }
1142
1143         post_url($url,$params);
1144         return;
1145
1146 }
1147
1148
1149 function atom_author($tag,$name,$uri,$h,$w,$photo) {
1150         $o = '';
1151         if(! $tag)
1152                 return $o;
1153         $name = xmlify($name);
1154         $uri = xmlify($uri);
1155         $h = intval($h);
1156         $w = intval($w);
1157         $photo = xmlify($photo);
1158
1159
1160         $o .= "<$tag>\r\n";
1161         $o .= "<name>$name</name>\r\n";
1162         $o .= "<uri>$uri</uri>\r\n";
1163         $o .= '<link rel="photo"  type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
1164         $o .= '<link rel="avatar" type="image/jpeg" media:width="' . $w . '" media:height="' . $h . '" href="' . $photo . '" />' . "\r\n";
1165         $o .= "</$tag>\r\n";
1166         return $o;
1167 }
1168
1169 function atom_entry($item,$type,$author,$owner,$comment = false) {
1170
1171         if($item['deleted'])
1172                 return '<at:deleted-entry ref="' . xmlify($item['uri']) . '" when="' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '" />' . "\r\n";
1173
1174         $a = get_app();
1175
1176         $o = "\r\n\r\n<entry>\r\n";
1177
1178         if(is_array($author))
1179                 $o .= atom_author('author',$author['name'],$author['url'],80,80,$author['thumb']);
1180         else
1181                 $o .= atom_author('author',$item['name'],$item['url'],80,80,$item['thumb']);
1182         if(strlen($item['owner-name']))
1183                 $o .= atom_author('dfrn:owner',$item['owner-name'],$item['owner-link'],80,80,$item['owner-avatar']);
1184
1185         if($item['parent'] != $item['id'])
1186                 $o .= '<thr:in-reply-to ref="' . xmlify($item['parent-uri']) . '" type="text/html" href="' .  xmlify($a->get_baseurl() . '/display/' . $owner['nickname'] . '/' . $item['id']) . '" />' . "\r\n";
1187
1188         $o .= '<id>' . xmlify($item['uri']) . '</id>' . "\r\n";
1189         $o .= '<title>' . xmlify($item['title']) . '</title>' . "\r\n";
1190         $o .= '<published>' . xmlify(datetime_convert('UTC','UTC',$item['created'] . '+00:00',ATOM_TIME)) . '</published>' . "\r\n";
1191         $o .= '<updated>' . xmlify(datetime_convert('UTC','UTC',$item['edited'] . '+00:00',ATOM_TIME)) . '</updated>' . "\r\n";
1192         $o .= '<content type="' . $type . '" >' . xmlify(($type === 'html') ? bbcode($item['body']) : $item['body']) . '</content>' . "\r\n";
1193         $o .= '<link rel="alternate" href="' . xmlify($a->get_baseurl() . '/display/' . $owner['nickname'] . '/' . $item['id']) . '" />' . "\r\n";
1194         if($comment)
1195                 $o .= '<dfrn:comment-allow>' . intval($item['last-child']) . '</dfrn:comment-allow>' . "\r\n";
1196
1197         if($item['location']) {
1198                 $o .= '<dfrn:location>' . xmlify($item['location']) . '</dfrn:location>' . "\r\n";
1199                 $o .= '<poco:address><poco:formatted>' . xmlify($item['location']) . '</poco:formatted></poco:address>' . "\r\n";
1200         }
1201
1202         if($item['coord'])
1203                 $o .= '<georss:point>' . xmlify($item['coord']) . '</georss:point>' . "\r\n";
1204
1205         $verb = construct_verb($item);
1206         $o .= '<as:verb>' . xmlify($verb) . '</as:verb>' . "\r\n";
1207         $actobj = construct_activity_object($item);
1208         if(strlen($actobj))
1209                 $o .= $actobj;
1210         $actarg = construct_activity_target($item);
1211         if(strlen($actarg))
1212                 $o .= $actarg;
1213
1214         $mentioned = get_mentions($item);
1215         if($mentioned)
1216                 $o .= $mentioned;
1217
1218         $o .= '</entry>' . "\r\n";
1219
1220         return $o;
1221 }
1222