include/items.php

   1 <?php
   2
   3
   4 function get_feed_for(&$a, $dfrn_id, $owner_id, $last_update) {
   5
   6         require_once('bbcode.php');
   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 != '*') {
  36
  37                 $r = q("SELECT * FROM `contact` WHERE ( `issued-id` = '%s' OR ( `duplex` = 1 AND `dfrn-id` = '%s' )) AND `uid` = %d LIMIT 1",
  38                         dbesc($dfrn_id),
  39                         dbesc($dfrn_id),
  40                         intval($owner_id)
  41                 );
  42                 if(! count($r))
  43                         return false;
  44
  45                 $contact = $r[0];
  46                 $groups = init_groups_visitor($contact['id']);
  47
  48                 if(count($groups)) {
  49                         for($x = 0; $x < count($groups); $x ++)
  50                                 $groups[$x] = '<' . intval($groups[$x]) . '>' ;
  51                         $gs = implode('|', $groups);
  52                 }
  53                 else
  54                         $gs = '<<>>' ; // Impossible to match
  55
  56                 $sql_extra = sprintf("
  57                         AND ( `allow_cid` = '' OR     `allow_cid` REGEXP '<%d>' )
  58                         AND ( `deny_cid`  = '' OR NOT `deny_cid`  REGEXP '<%d>' )
  59                         AND ( `allow_gid` = '' OR     `allow_gid` REGEXP '%s' )
  60                         AND ( `deny_gid`  = '' OR NOT `deny_gid`  REGEXP '%s')
  61                 ",
  62                         intval($contact['id']),
  63                         intval($contact['id']),
  64                         dbesc($gs),
  65                         dbesc($gs)
  66                 );
  67         }
  68
  69         if($dfrn_id == '' || $dfrn_id == '*')
  70                 $sort = 'DESC';
  71         else
  72                 $sort = 'ASC';
  73
  74         if(! strlen($last_update))
  75                 $last_update = 'now - 30 days';
  76         $check_date = datetime_convert('UTC','UTC',$last_update,'Y-m-d H:i:s');
  77
  78         $r = q("SELECT `item`.*, `item`.`id` AS `item_id`,
  79                 `contact`.`name`, `contact`.`photo`, `contact`.`url`,
  80                 `contact`.`name-date`, `contact`.`uri-date`, `contact`.`avatar-date`,
  81                 `contact`.`thumb`, `contact`.`dfrn-id`, `contact`.`self`,
  82                 `contact`.`id` AS `contact-id`, `contact`.`uid` AS `contact-uid`
  83                 FROM `item` LEFT JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
  84                 WHERE `item`.`uid` = %d AND `item`.`visible` = 1
  85                 AND NOT `item`.`type` IN ( 'remote', 'net-comment' ) AND `contact`.`blocked` = 0 AND `contact`.`pending` = 0
  86                 AND ( `item`.`edited` > '%s' OR `item`.`changed` > '%s' )
  87                 $sql_extra
  88                 ORDER BY `parent` %s, `created` ASC LIMIT 0, 300",
  89                 intval($owner_id),
  90                 dbesc($check_date),
  91                 dbesc($check_date),
  92                 dbesc($sort)
  93         );
  94         if(! count($r))
  95                 killme();
  96
  97         $items = $r;
  98
  99         $feed_template = file_get_contents('view/atom_feed.tpl');
 100         $tomb_template = file_get_contents('view/atom_tomb.tpl');
 101         $item_template = file_get_contents('view/atom_item.tpl');
 102         $cmnt_template = file_get_contents('view/atom_cmnt.tpl');
 103
 104         $atom = '';
 105
 106
 107         $atom .= replace_macros($feed_template, array(
 108                         '$feed_id'      => xmlify($a->get_baseurl() . '/profile/' . $owner_nick),
 109                         '$feed_title'   => xmlify($owner['name']),
 110                         '$feed_updated' => xmlify(datetime_convert('UTC', 'UTC', $updated . '+00:00' , ATOM_TIME)) ,
 111                         '$name'         => xmlify($owner['name']),
 112                         '$profile_page' => xmlify($owner['url']),
 113                         '$photo'        => xmlify($owner['photo']),
 114                         '$thumb'        => xmlify($owner['thumb']),
 115                         '$picdate'      => xmlify(datetime_convert('UTC','UTC',$owner['avatar-date'] . '+00:00' , ATOM_TIME)) ,
 116                         '$uridate'      => xmlify(datetime_convert('UTC','UTC',$owner['uri-date']    . '+00:00' , ATOM_TIME)) ,
 117                         '$namdate'      => xmlify(datetime_convert('UTC','UTC',$owner['name-date']   . '+00:00' , ATOM_TIME))
 118         ));
 119
 120
 121         foreach($items as $item) {
 122
 123                 // public feeds get html, our own nodes use bbcode
 124
 125                 if($dfrn_id == '*') {
 126                         $item['body'] = bbcode($item['body']);
 127                         $type = 'html';
 128                 }
 129                 else {
 130                         $type = 'text';
 131                 }
 132
 133                 if($item['deleted']) {
 134                         $atom .= replace_macros($tomb_template, array(
 135                                 '$id'      => xmlify($item['uri']),
 136                                 '$updated' => xmlify(datetime_convert('UTC', 'UTC', $item['edited'] . '+00:00' , ATOM_TIME))
 137                         ));
 138                 }
 139                 else {
 140                         $verb = construct_verb($item);
 141                         $actobj = construct_activity($item);
 142
 143                         if($item['parent'] == $item['id']) {
 144                                 $atom .= replace_macros($item_template, array(
 145                                         '$name'               => xmlify($item['name']),
 146                                         '$profile_page'       => xmlify($item['url']),
 147                                         '$thumb'              => xmlify($item['thumb']),
 148                                         '$owner_name'         => xmlify($item['owner-name']),
 149                                         '$owner_profile_page' => xmlify($item['owner-link']),
 150                                         '$owner_thumb'        => xmlify($item['owner-avatar']),
 151                                         '$item_id'            => xmlify($item['uri']),
 152                                         '$title'              => xmlify($item['title']),
 153                                         '$published'          => xmlify(datetime_convert('UTC', 'UTC', $item['created'] . '+00:00' , ATOM_TIME)),
 154                                         '$updated'            => xmlify(datetime_convert('UTC', 'UTC', $item['edited']  . '+00:00' , ATOM_TIME)),
 155                                         '$location'           => xmlify($item['location']),
 156                                         '$type'               => $type,
 157                                         '$content'            => xmlify($item['body']),
 158                                         '$verb'               => xmlify($verb),
 159                                         '$actobj'             => $actobj,  // do not xmlify
 160                                         '$comment_allow'      => ((($item['last-child']) && ($contact['rel']) && ($contact['rel'] != REL_FAN)) ? 1 : 0)
 161                                 ));
 162                         }
 163                         else {
 164                                 $atom .= replace_macros($cmnt_template, array(
 165                                         '$name'          => xmlify($item['name']),
 166                                         '$profile_page'  => xmlify($item['url']),
 167                                         '$thumb'         => xmlify($item['thumb']),
 168                                         '$item_id'       => xmlify($item['uri']),
 169                                         '$title'         => xmlify($item['title']),
 170                                         '$published'     => xmlify(datetime_convert('UTC', 'UTC', $item['created'] . '+00:00' , ATOM_TIME)),
 171                                         '$updated'       => xmlify(datetime_convert('UTC', 'UTC', $item['edited']  . '+00:00' , ATOM_TIME)),
 172                                         '$type'          => $type,
 173                                         '$content'       => xmlify($item['body']),
 174                                         '$verb'          => xmlify($verb),
 175                                         '$actobj'        => $actobj, // do not xmlify
 176                                         '$parent_id'     => xmlify($item['parent-uri']),
 177                                         '$comment_allow' => (($item['last-child']) ? 1 : 0)
 178                                 ));
 179                         }
 180                 }
 181         }
 182
 183         $atom .= '</feed>' . "\r\n";
 184         return $atom;
 185 }
 186
 187
 188 function construct_verb($item) {
 189         if($item['verb'])
 190                 return $item['verb'];
 191         return ACTIVITY_POST;
 192 }
 193
 194 function construct_activity($item) {
 195
 196         if($item['type'] == 'activity') {
 197
 198
 199         }
 200         return '';
 201 }
 202
 203
 204
 205
 206 function get_atom_elements($item) {
 207
 208         require_once('library/HTMLPurifier.auto.php');
 209         require_once('include/html2bbcode.php');
 210
 211         $res = array();
 212
 213         $raw_author = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'author');
 214         if($raw_author) {
 215                 if($raw_author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'][0]['attribs']['']['rel'] == 'photo')
 216                 $res['author-avatar'] = unxmlify($raw_author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'][0]['attribs']['']['href']);
 217         }
 218
 219         $author = $item->get_author();
 220         $res['author-name'] = unxmlify($author->get_name());
 221         $res['author-link'] = unxmlify($author->get_link());
 222         if(! $res['author-avatar'])
 223                 $res['author-avatar'] = unxmlify($author->get_avatar());
 224         $res['uri'] = unxmlify($item->get_id());
 225         $res['title'] = unxmlify($item->get_title());
 226         $res['body'] = unxmlify($item->get_content());
 227
 228         $maxlen = get_max_import_size();
 229         if($maxlen && (strlen($res['body']) > $maxlen))
 230                 $res['body'] = substr($res['body'],0, $maxlen);
 231
 232         // It isn't certain at this point whether our content is plaintext or html and we'd be foolish to trust
 233         // the content type. Our own network only emits text normally, though it might have been converted to
 234         // html if we used a pubsubhubbub transport. But if we see even one html open tag in our text, we will
 235         // have to assume it is all html and needs to be purified.
 236
 237         // It doesn't matter all that much security wise - because before this content is used anywhere, we are
 238         // going to escape any tags we find regardless, but this lets us import a limited subset of html from
 239         // the wild, by sanitising it and converting supported tags to bbcode before we rip out any remaining
 240         // html.
 241
 242
 243         if(strpos($res['body'],'<')) {
 244
 245                 $res['body'] = preg_replace('#<object[^>]+>.+?' . 'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s',
 246                         '[youtube]$1[/youtube]', $res['body']);
 247
 248                 $config = HTMLPurifier_Config::createDefault();
 249                 $config->set('Core.DefinitionCache', null);
 250
 251                 // we shouldn't need a whitelist, because the bbcode converter
 252                 // will strip out any unsupported tags.
 253                 // $config->set('HTML.Allowed', 'p,b,a[href],i');
 254
 255                 $purifier = new HTMLPurifier($config);
 256                 $res['body'] = $purifier->purify($res['body']);
 257         }
 258
 259
 260         $res['body'] = html2bbcode($res['body']);
 261
 262
 263         $allow = $item->get_item_tags(NAMESPACE_DFRN,'comment-allow');
 264         if($allow && $allow[0]['data'] == 1)
 265                 $res['last-child'] = 1;
 266         else
 267                 $res['last-child'] = 0;
 268
 269         $rawcreated = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'published');
 270         if($rawcreated)
 271                 $res['created'] = unxmlify($rawcreated[0]['data']);
 272
 273         $rawlocation = $item->get_item_tags(NAMESPACE_DFRN, 'location');
 274         if($rawlocation)
 275                 $res['location'] = unxmlify($rawlocation[0]['data']);
 276
 277
 278         $rawedited = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'updated');
 279         if($rawedited)
 280                 $res['edited'] = unxmlify($rawcreated[0]['data']);
 281
 282         $rawowner = $item->get_item_tags(NAMESPACE_DFRN, 'owner');
 283         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'])
 284                 $res['owner-name'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']);
 285         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data'])
 286                 $res['owner-name'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['name'][0]['data']);
 287         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'])
 288                 $res['owner-link'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']);
 289         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data'])
 290                 $res['owner-link'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['uri'][0]['data']);
 291
 292         if($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'][0]['attribs']['']['rel'] == 'photo')
 293                 $res['owner-avatar'] = unxmlify($rawowner[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['link'][0]['attribs']['']['href']);
 294         elseif($rawowner[0]['child'][NAMESPACE_DFRN]['avatar'][0]['data'])
 295                 $res['owner-avatar'] = unxmlify($rawowner[0]['child'][NAMESPACE_DFRN]['avatar'][0]['data']);
 296
 297         $rawverb = $item->get_item_tags(NAMESPACE_ACTIVITY, 'verb');
 298         // select between supported verbs
 299         if($rawverb)
 300                 $res['verb'] = unxmlify($rawverb[0]['data']);
 301
 302         $rawobj = $item->get_item_tags(NAMESPACE_ACTIVITY, 'object');
 303         if($rawobj) {
 304                 $res['object-type'] = $rawobj[0]['object-type'][0]['data'];
 305                 $res['object'] = $rawobj[0];
 306         }
 307
 308         return $res;
 309 }
 310
 311 function item_store($arr) {
 312
 313 //print_r($arr);
 314
 315
 316         if($arr['gravity'])
 317                 $arr['gravity'] = intval($arr['gravity']);
 318         elseif($arr['parent-uri'] == $arr['uri'])
 319                 $arr['gravity'] = 0;
 320         elseif($arr['verb'] == ACTIVITY_POST)
 321                 $arr['gravity'] = 6;
 322
 323         if(! x($arr,'type'))
 324                 $arr['type'] = 'remote';
 325         $arr['wall'] = ((intval($arr['wall'])) ? 1 : 0);
 326         $arr['uri'] = notags(trim($arr['uri']));
 327         $arr['author-name'] = notags(trim($arr['author-name']));
 328         $arr['author-link'] = notags(trim($arr['author-link']));
 329         $arr['author-avatar'] = notags(trim($arr['author-avatar']));
 330         $arr['owner-name'] = notags(trim($arr['owner-name']));
 331         $arr['owner-link'] = notags(trim($arr['owner-link']));
 332         $arr['owner-avatar'] = notags(trim($arr['owner-avatar']));
 333         $arr['created'] = ((x($arr,'created') !== false) ? datetime_convert('UTC','UTC',$arr['created']) : datetime_convert());
 334         $arr['edited']  = ((x($arr,'edited')  !== false) ? datetime_convert('UTC','UTC',$arr['edited'])  : datetime_convert());
 335         $arr['changed'] = datetime_convert();
 336         $arr['title'] = notags(trim($arr['title']));
 337         $arr['location'] = notags(trim($arr['location']));
 338         $arr['body'] = escape_tags(trim($arr['body']));
 339         $arr['last-child'] = intval($arr['last-child']);
 340         $arr['visible'] = ((x($arr,'visible') !== false) ? intval($arr['visible']) : 1);
 341         $arr['deleted'] = 0;
 342         $arr['parent-uri'] = notags(trim($arr['parent-uri']));
 343         $arr['verb'] = notags(trim($arr['verb']));
 344         $arr['object-type'] = notags(trim($arr['object-type']));
 345         $arr['object'] = trim($arr['object']);
 346
 347         $parent_id = 0;
 348         $parent_missing = false;
 349
 350         dbesc_array($arr);
 351
 352         $r = q("INSERT INTO `item` (`"
 353                         . implode("`, `", array_keys($arr))
 354                         . "`) VALUES ('"
 355                         . implode("', '", array_values($arr))
 356                         . "')" );
 357
 358         $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 359                 dbesc($arr['parent-uri']),
 360                 intval($arr['uid'])
 361         );
 362
 363         if(count($r))
 364                 $parent_id = $r[0]['id'];
 365         else {
 366                 $parent_missing = true;
 367         }
 368
 369         $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 370                 $arr['uri'],           // already dbesc'd
 371                 intval($arr['uid'])
 372         );
 373         if(count($r))
 374                 $current_post = $r[0]['id'];
 375         else
 376                 return 0;
 377
 378         if($parent_missing) {
 379
 380                 // perhaps the parent was deleted, but in any case, this thread is dead
 381                 // and unfortunately our brand new item now has to be destroyed
 382
 383                 q("DELETE FROM `item` WHERE `id` = %d LIMIT 1",
 384                         intval($current_post)
 385                 );
 386                 return 0;
 387         }
 388
 389         $r = q("UPDATE `item` SET `parent` = %d WHERE `id` = %d LIMIT 1",
 390                 intval($parent_id),
 391                 intval($current_post)
 392         );
 393
 394         return $current_post;
 395 }