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 = $r[0];
  32         else
  33                 killme();
  34
  35         if($dfrn_id && $dfrn_id != '*') {
  36
  37                 $sql_extra = '';
  38                 switch($direction) {
  39                         case (-1):
  40                                 $sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id));
  41                                 $my_id = $dfrn_id;
  42                                 break;
  43                         case 0:
  44                                 $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  45                                 $my_id = '1:' . $dfrn_id;
  46                                 break;
  47                         case 1:
  48                                 $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
  49                                 $my_id = '0:' . $dfrn_id;
  50                                 break;
  51                         default:
  52                                 return false;
  53                                 break; // NOTREACHED
  54                 }
  55
  56                 $r = q("SELECT * FROM `contact` WHERE `blocked` = 0 AND `pending` = 0 AND `contact`.`uid` = %d $sql_extra LIMIT 1",
  57                         intval($owner_id)
  58                 );
  59
  60                 if(! count($r))
  61                         return false;
  62
  63                 $contact = $r[0];
  64                 $groups = init_groups_visitor($contact['id']);
  65
  66                 if(count($groups)) {
  67                         for($x = 0; $x < count($groups); $x ++)
  68                                 $groups[$x] = '<' . intval($groups[$x]) . '>' ;
  69                         $gs = implode('|', $groups);
  70                 }
  71                 else
  72                         $gs = '<<>>' ; // Impossible to match
  73
  74                 $sql_extra = sprintf("
  75                         AND ( `allow_cid` = '' OR     `allow_cid` REGEXP '<%d>' )
  76                         AND ( `deny_cid`  = '' OR NOT `deny_cid`  REGEXP '<%d>' )
  77                         AND ( `allow_gid` = '' OR     `allow_gid` REGEXP '%s' )
  78                         AND ( `deny_gid`  = '' OR NOT `deny_gid`  REGEXP '%s')
  79                 ",
  80                         intval($contact['id']),
  81                         intval($contact['id']),
  82                         dbesc($gs),
  83                         dbesc($gs)
  84                 );
  85         }
  86
  87         if($dfrn_id == '' || $dfrn_id == '*')
  88                 $sort = 'DESC';
  89         else
  90                 $sort = 'ASC';
  91
  92         if(! strlen($last_update))
  93                 $last_update = 'now - 30 days';
  94         $check_date = datetime_convert('UTC','UTC',$last_update,'Y-m-d H:i:s');
  95
  96         $r = q("SELECT `item`.*, `item`.`id` AS `item_id`,
  97                 `contact`.`name`, `contact`.`photo`, `contact`.`url`,
  98                 `contact`.`name-date`, `contact`.`uri-date`, `contact`.`avatar-date`,
  99                 `contact`.`thumb`, `contact`.`dfrn-id`, `contact`.`self`,
 100                 `contact`.`id` AS `contact-id`, `contact`.`uid` AS `contact-uid`
 101                 FROM `item` LEFT JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
 102                 WHERE `item`.`uid` = %d AND `item`.`visible` = 1
 103                 AND `item`.`wall` = 1 AND `contact`.`blocked` = 0 AND `contact`.`pending` = 0
 104                 AND ( `item`.`edited` > '%s' OR `item`.`changed` > '%s' )
 105                 $sql_extra
 106                 ORDER BY `parent` %s, `created` ASC LIMIT 0, 300",
 107                 intval($owner_id),
 108                 dbesc($check_date),
 109                 dbesc($check_date),
 110                 dbesc($sort)
 111         );
 112         if(! count($r))
 113                 killme();
 114
 115         $items = $r;
 116
 117         $feed_template = file_get_contents('view/atom_feed.tpl');
 118         $tomb_template = file_get_contents('view/atom_tomb.tpl');
 119         $item_template = file_get_contents('view/atom_item.tpl');
 120         $cmnt_template = file_get_contents('view/atom_cmnt.tpl');
 121
 122         $atom = '';
 123
 124
 125         $atom .= replace_macros($feed_template, array(
 126                         '$feed_id'      => xmlify($a->get_baseurl() . '/profile/' . $owner_nick),
 127                         '$feed_title'   => xmlify($owner['name']),
 128                         '$feed_updated' => xmlify(datetime_convert('UTC', 'UTC', $updated . '+00:00' , ATOM_TIME)) ,
 129                         '$name'         => xmlify($owner['name']),
 130                         '$profile_page' => xmlify($owner['url']),
 131                         '$photo'        => xmlify($owner['photo']),
 132                         '$thumb'        => xmlify($owner['thumb']),
 133                         '$picdate'      => xmlify(datetime_convert('UTC','UTC',$owner['avatar-date'] . '+00:00' , ATOM_TIME)) ,
 134                         '$uridate'      => xmlify(datetime_convert('UTC','UTC',$owner['uri-date']    . '+00:00' , ATOM_TIME)) ,
 135                         '$namdate'      => xmlify(datetime_convert('UTC','UTC',$owner['name-date']   . '+00:00' , ATOM_TIME))
 136         ));
 137
 138
 139         foreach($items as $item) {
 140
 141                 // public feeds get html, our own nodes use bbcode
 142
 143                 if($dfrn_id == '*') {
 144                         $item['body'] = bbcode($item['body']);
 145                         $type = 'html';
 146                 }
 147                 else {
 148                         $type = 'text';
 149                 }
 150
 151                 if($item['deleted']) {
 152                         $atom .= replace_macros($tomb_template, array(
 153                                 '$id'      => xmlify($item['uri']),
 154                                 '$updated' => xmlify(datetime_convert('UTC', 'UTC', $item['edited'] . '+00:00' , ATOM_TIME))
 155                         ));
 156                 }
 157                 else {
 158                         $verb = construct_verb($item);
 159                         $actobj = construct_activity($item);
 160
 161                         if($item['parent'] == $item['id']) {
 162                                 $atom .= replace_macros($item_template, array(
 163                                         '$name'               => xmlify($item['name']),
 164                                         '$profile_page'       => xmlify($item['url']),
 165                                         '$thumb'              => xmlify($item['thumb']),
 166                                         '$owner_name'         => xmlify($item['owner-name']),
 167                                         '$owner_profile_page' => xmlify($item['owner-link']),
 168                                         '$owner_thumb'        => xmlify($item['owner-avatar']),
 169                                         '$item_id'            => xmlify($item['uri']),
 170                                         '$title'              => xmlify($item['title']),
 171                                         '$published'          => xmlify(datetime_convert('UTC', 'UTC', $item['created'] . '+00:00' , ATOM_TIME)),
 172                                         '$updated'            => xmlify(datetime_convert('UTC', 'UTC', $item['edited']  . '+00:00' , ATOM_TIME)),
 173                                         '$location'           => xmlify($item['location']),
 174                                         '$type'               => $type,
 175                                         '$content'            => xmlify($item['body']),
 176                                         '$verb'               => xmlify($verb),
 177                                         '$actobj'             => $actobj,  // do not xmlify
 178                                         '$comment_allow'      => ((($item['last-child']) && ($contact['rel']) && ($contact['rel'] != REL_FAN)) ? 1 : 0)
 179                                 ));
 180                         }
 181                         else {
 182                                 $atom .= replace_macros($cmnt_template, array(
 183                                         '$name'          => xmlify($item['name']),
 184                                         '$profile_page'  => xmlify($item['url']),
 185                                         '$thumb'         => xmlify($item['thumb']),
 186                                         '$item_id'       => xmlify($item['uri']),
 187                                         '$title'         => xmlify($item['title']),
 188                                         '$published'     => xmlify(datetime_convert('UTC', 'UTC', $item['created'] . '+00:00' , ATOM_TIME)),
 189                                         '$updated'       => xmlify(datetime_convert('UTC', 'UTC', $item['edited']  . '+00:00' , ATOM_TIME)),
 190                                         '$type'          => $type,
 191                                         '$content'       => xmlify($item['body']),
 192                                         '$verb'          => xmlify($verb),
 193                                         '$actobj'        => $actobj, // do not xmlify
 194                                         '$parent_id'     => xmlify($item['parent-uri']),
 195                                         '$comment_allow' => (($item['last-child']) ? 1 : 0)
 196                                 ));
 197                         }
 198                 }
 199         }
 200
 201         $atom .= '</feed>' . "\r\n";
 202         return $atom;
 203 }
 204
 205
 206 function construct_verb($item) {
 207         if($item['verb'])
 208                 return $item['verb'];
 209         return ACTIVITY_POST;
 210 }
 211
 212 function construct_activity($item) {
 213
 214         if($item['object']) {
 215                 $o = '<as:object>' . "\r\n";
 216                 $r = @simplexml_load_string($item['object']);
 217                 if($r->type)
 218                         $o .= '<as:object-type>' . $r->type . '</as:object-type>' . "\r\n";
 219                 if($r->id)
 220                         $o .= '<id>' . $r->id . '</id>' . "\r\n";
 221                 if($r->link)
 222                         $o .= '<link rel="alternate" type="text/html" href="' . $r->link . '" />' . "\r\n";
 223                 if($r->title)
 224                         $o .= '<title>' . $r->title . '</title>' . "\r\n";
 225                 if($r->content)
 226                         $o .= '<content type="html" >' . bbcode($r->content) . '</content>' . "\r\n";
 227                 $o .= '</as:object>' . "\r\n";
 228                 return $o;
 229         }
 230
 231         return '';
 232 }
 233
 234
 235
 236
 237 function get_atom_elements($item) {
 238
 239         require_once('library/HTMLPurifier.auto.php');
 240         require_once('include/html2bbcode.php');
 241
 242         $res = array();
 243
 244         $raw_author = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'author');
 245         if($raw_author) {
 246                 if($raw_author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'][0]['attribs']['']['rel'] == 'photo')
 247                 $res['author-avatar'] = unxmlify($raw_author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'][0]['attribs']['']['href']);
 248         }
 249
 250         $author = $item->get_author();
 251         $res['author-name'] = unxmlify($author->get_name());
 252         $res['author-link'] = unxmlify($author->get_link());
 253         if(! $res['author-avatar'])
 254                 $res['author-avatar'] = unxmlify($author->get_avatar());
 255         $res['uri'] = unxmlify($item->get_id());
 256         $res['title'] = unxmlify($item->get_title());
 257         $res['body'] = unxmlify($item->get_content());
 258
 259         $maxlen = get_max_import_size();
 260         if($maxlen && (strlen($res['body']) > $maxlen))
 261                 $res['body'] = substr($res['body'],0, $maxlen);
 262
 263         // It isn't certain at this point whether our content is plaintext or html and we'd be foolish to trust
 264         // the content type. Our own network only emits text normally, though it might have been converted to
 265         // html if we used a pubsubhubbub transport. But if we see even one html open tag in our text, we will
 266         // have to assume it is all html and needs to be purified.
 267
 268         // It doesn't matter all that much security wise - because before this content is used anywhere, we are
 269         // going to escape any tags we find regardless, but this lets us import a limited subset of html from
 270         // the wild, by sanitising it and converting supported tags to bbcode before we rip out any remaining
 271         // html.
 272
 273
 274         if(strpos($res['body'],'<')) {
 275
 276                 $res['body'] = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
 277                         '[youtube]$1[/youtube]', $res['body']);
 278
 279                 $config = HTMLPurifier_Config::createDefault();
 280                 $config->set('Core.DefinitionCache', null);
 281
 282                 // we shouldn't need a whitelist, because the bbcode converter
 283                 // will strip out any unsupported tags.
 284                 // $config->set('HTML.Allowed', 'p,b,a[href],i');
 285
 286                 $purifier = new HTMLPurifier($config);
 287                 $res['body'] = $purifier->purify($res['body']);
 288         }
 289
 290
 291         $res['body'] = html2bbcode($res['body']);
 292
 293
 294         $allow = $item->get_item_tags(NAMESPACE_DFRN,'comment-allow');
 295         if($allow && $allow[0]['data'] == 1)
 296                 $res['last-child'] = 1;
 297         else
 298                 $res['last-child'] = 0;
 299
 300         $rawcreated = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'published');
 301         if($rawcreated)
 302                 $res['created'] = unxmlify($rawcreated[0]['data']);
 303
 304         $rawlocation = $item->get_item_tags(NAMESPACE_DFRN, 'location');
 305         if($rawlocation)
 306                 $res['location'] = unxmlify($rawlocation[0]['data']);
 307
 308
 309         $rawedited = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'updated');
 310         if($rawedited)
 311                 $res['edited'] = unxmlify($rawcreated[0]['data']);
 312
 313         $rawowner = $item->get_item_tags(NAMESPACE_DFRN, 'owner');
 314         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'])
 315                 $res['owner-name'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']);
 316         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data'])
 317                 $res['owner-name'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data']);
 318         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'])
 319                 $res['owner-link'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']);
 320         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data'])
 321                 $res['owner-link'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data']);
 322
 323         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'][0]['attribs']['']['rel'] == 'photo')
 324                 $res['owner-avatar'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'][0]['attribs']['']['href']);
 325         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['avatar'][0]['data'])
 326                 $res['owner-avatar'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['avatar'][0]['data']);
 327
 328         $rawverb = $item->get_item_tags(NAMESPACE_ACTIVITY, 'verb');
 329         // select between supported verbs
 330         if($rawverb)
 331                 $res['verb'] = unxmlify($rawverb[0]['data']);
 332
 333         $rawobj = $item->get_item_tags(NAMESPACE_ACTIVITY, 'object');
 334
 335
 336         if($rawobj) {
 337                 $res['object'] = '<object>' . "\n";
 338                 if($rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data']) {
 339                         $res['object-type'] = $rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'];
 340                         $res['object'] .= '<type>' . $rawobj[0]['child'][NAMESPACE_ACTIVITY]['object-type'][0]['data'] . '</type>' . "\n";
 341                 }
 342                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'])
 343                         $res['object'] .= '<id>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['id'][0]['data'] . '</id>' . "\n";
 344
 345                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'][0]['attribs']['']['rel'] == 'alternate')
 346                         $res['object'] .= '<link>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'][0]['attribs']['']['href'] . '</link>' . "\n";
 347                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'])
 348                         $res['object'] .= '<title>' . $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['title'][0]['data'] . '</title>' . "\n";
 349                 if($rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data']) {
 350                         $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['content'][0]['data'];
 351                         if(! $body)
 352                                 $body = $rawobj[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['summary'][0]['data'];
 353                         if(strpos($body,'<')) {
 354
 355                                 $body = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
 356                                         '[youtube]$1[/youtube]', $body);
 357
 358                                 $config = HTMLPurifier_Config::createDefault();
 359                                 $config->set('Core.DefinitionCache', null);
 360
 361                                 $purifier = new HTMLPurifier($config);
 362                                 $body = $purifier->purify($body);
 363                         }
 364
 365                         $body = html2bbcode($body);
 366                         $res['object'] .= '<content>' . $body . '</content>' . "\n";
 367                 }
 368
 369                 $res['object'] .= '</object>' . "\n";
 370         }
 371
 372         return $res;
 373 }
 374
 375 function item_store($arr) {
 376
 377 //print_r($arr);
 378
 379
 380         if($arr['gravity'])
 381                 $arr['gravity'] = intval($arr['gravity']);
 382         elseif($arr['parent-uri'] == $arr['uri'])
 383                 $arr['gravity'] = 0;
 384         elseif($arr['verb'] == ACTIVITY_POST)
 385                 $arr['gravity'] = 6;
 386
 387         if(! x($arr,'type'))
 388                 $arr['type'] = 'remote';
 389         $arr['wall'] = ((intval($arr['wall'])) ? 1 : 0);
 390         $arr['uri'] = notags(trim($arr['uri']));
 391         $arr['author-name'] = notags(trim($arr['author-name']));
 392         $arr['author-link'] = notags(trim($arr['author-link']));
 393         $arr['author-avatar'] = notags(trim($arr['author-avatar']));
 394         $arr['owner-name'] = notags(trim($arr['owner-name']));
 395         $arr['owner-link'] = notags(trim($arr['owner-link']));
 396         $arr['owner-avatar'] = notags(trim($arr['owner-avatar']));
 397         $arr['created'] = ((x($arr,'created') !== false) ? datetime_convert('UTC','UTC',$arr['created']) : datetime_convert());
 398         $arr['edited']  = ((x($arr,'edited')  !== false) ? datetime_convert('UTC','UTC',$arr['edited'])  : datetime_convert());
 399         $arr['changed'] = datetime_convert();
 400         $arr['title'] = notags(trim($arr['title']));
 401         $arr['location'] = notags(trim($arr['location']));
 402         $arr['body'] = escape_tags(trim($arr['body']));
 403         $arr['last-child'] = intval($arr['last-child']);
 404         $arr['visible'] = ((x($arr,'visible') !== false) ? intval($arr['visible']) : 1);
 405         $arr['deleted'] = 0;
 406         $arr['parent-uri'] = notags(trim($arr['parent-uri']));
 407         $arr['verb'] = notags(trim($arr['verb']));
 408         $arr['object-type'] = notags(trim($arr['object-type']));
 409         $arr['object'] = trim($arr['object']);
 410
 411         $parent_id = 0;
 412         $parent_missing = false;
 413
 414         dbesc_array($arr);
 415
 416         $r = q("INSERT INTO `item` (`"
 417                         . implode("`, `", array_keys($arr))
 418                         . "`) VALUES ('"
 419                         . implode("', '", array_values($arr))
 420                         . "')" );
 421
 422         $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 423                 dbesc($arr['parent-uri']),
 424                 intval($arr['uid'])
 425         );
 426
 427         if(count($r))
 428                 $parent_id = $r[0]['id'];
 429         else {
 430                 $parent_missing = true;
 431         }
 432
 433         $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 434                 $arr['uri'],           // already dbesc'd
 435                 intval($arr['uid'])
 436         );
 437         if(count($r))
 438                 $current_post = $r[0]['id'];
 439         else
 440                 return 0;
 441
 442         if($parent_missing) {
 443
 444                 // perhaps the parent was deleted, but in any case, this thread is dead
 445                 // and unfortunately our brand new item now has to be destroyed
 446
 447                 q("DELETE FROM `item` WHERE `id` = %d LIMIT 1",
 448                         intval($current_post)
 449                 );
 450                 return 0;
 451         }
 452
 453         $r = q("UPDATE `item` SET `parent` = %d WHERE `id` = %d LIMIT 1",
 454                 intval($parent_id),
 455                 intval($current_post)
 456         );
 457
 458         return $current_post;
 459 }