include/items.php

   1 <?php
   2
   3 /**
   4  * @file include/items.php
   5  */
   6
   7 use \Friendica\ParseUrl;
   8
   9 require_once('include/bbcode.php');
  10 require_once('include/oembed.php');
  11 require_once('include/salmon.php');
  12 require_once('include/crypto.php');
  13 require_once('include/Photo.php');
  14 require_once('include/tags.php');
  15 require_once('include/files.php');
  16 require_once('include/text.php');
  17 require_once('include/email.php');
  18 require_once('include/threads.php');
  19 require_once('include/socgraph.php');
  20 require_once('include/plaintext.php');
  21 require_once('include/ostatus.php');
  22 require_once('include/feed.php');
  23 require_once('include/Contact.php');
  24 require_once('mod/share.php');
  25 require_once('include/enotify.php');
  26 require_once('include/dfrn.php');
  27 require_once('include/group.php');
  28
  29 require_once('library/defuse/php-encryption-1.2.1/Crypto.php');
  30
  31 function construct_verb($item) {
  32         if ($item['verb'])
  33                 return $item['verb'];
  34         return ACTIVITY_POST;
  35 }
  36
  37 /* limit_body_size()
  38  *
  39  *              The purpose of this function is to apply system message length limits to
  40  *              imported messages without including any embedded photos in the length
  41  */
  42 if (! function_exists('limit_body_size')) {
  43 function limit_body_size($body) {
  44
  45 //      logger('limit_body_size: start', LOGGER_DEBUG);
  46
  47         $maxlen = get_max_import_size();
  48
  49         // If the length of the body, including the embedded images, is smaller
  50         // than the maximum, then don't waste time looking for the images
  51         if ($maxlen && (strlen($body) > $maxlen)) {
  52
  53                 logger('limit_body_size: the total body length exceeds the limit', LOGGER_DEBUG);
  54
  55                 $orig_body = $body;
  56                 $new_body = '';
  57                 $textlen = 0;
  58                 $max_found = false;
  59
  60                 $img_start = strpos($orig_body, '[img');
  61                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
  62                 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
  63                 while(($img_st_close !== false) && ($img_end !== false)) {
  64
  65                         $img_st_close++; // make it point to AFTER the closing bracket
  66                         $img_end += $img_start;
  67                         $img_end += strlen('[/img]');
  68
  69                         if (! strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) {
  70                                 // This is an embedded image
  71
  72                                 if ( ($textlen + $img_start) > $maxlen ) {
  73                                         if ($textlen < $maxlen) {
  74                                                 logger('limit_body_size: the limit happens before an embedded image', LOGGER_DEBUG);
  75                                                 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
  76                                                 $textlen = $maxlen;
  77                                         }
  78                                 } else {
  79                                         $new_body = $new_body . substr($orig_body, 0, $img_start);
  80                                         $textlen += $img_start;
  81                                 }
  82
  83                                 $new_body = $new_body . substr($orig_body, $img_start, $img_end - $img_start);
  84                         } else {
  85
  86                                 if ( ($textlen + $img_end) > $maxlen ) {
  87                                         if ($textlen < $maxlen) {
  88                                                 logger('limit_body_size: the limit happens before the end of a non-embedded image', LOGGER_DEBUG);
  89                                                 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
  90                                                 $textlen = $maxlen;
  91                                         }
  92                                 } else {
  93                                         $new_body = $new_body . substr($orig_body, 0, $img_end);
  94                                         $textlen += $img_end;
  95                                 }
  96                         }
  97                         $orig_body = substr($orig_body, $img_end);
  98
  99                         if ($orig_body === false) // in case the body ends on a closing image tag
 100                                 $orig_body = '';
 101
 102                         $img_start = strpos($orig_body, '[img');
 103                         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
 104                         $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
 105                 }
 106
 107                 if ( ($textlen + strlen($orig_body)) > $maxlen) {
 108                         if ($textlen < $maxlen) {
 109                                 logger('limit_body_size: the limit happens after the end of the last image', LOGGER_DEBUG);
 110                                 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
 111                                 $textlen = $maxlen;
 112                         }
 113                 } else {
 114                         logger('limit_body_size: the text size with embedded images extracted did not violate the limit', LOGGER_DEBUG);
 115                         $new_body = $new_body . $orig_body;
 116                         $textlen += strlen($orig_body);
 117                 }
 118
 119                 return $new_body;
 120         } else
 121                 return $body;
 122 }}
 123
 124 function title_is_body($title, $body) {
 125
 126         $title = strip_tags($title);
 127         $title = trim($title);
 128         $title = html_entity_decode($title, ENT_QUOTES, 'UTF-8');
 129         $title = str_replace(array("\n", "\r", "\t", " "), array("","","",""), $title);
 130
 131         $body = strip_tags($body);
 132         $body = trim($body);
 133         $body = html_entity_decode($body, ENT_QUOTES, 'UTF-8');
 134         $body = str_replace(array("\n", "\r", "\t", " "), array("","","",""), $body);
 135
 136         if (strlen($title) < strlen($body))
 137                 $body = substr($body, 0, strlen($title));
 138
 139         if (($title != $body) and (substr($title, -3) == "...")) {
 140                 $pos = strrpos($title, "...");
 141                 if ($pos > 0) {
 142                         $title = substr($title, 0, $pos);
 143                         $body = substr($body, 0, $pos);
 144                 }
 145         }
 146
 147         return($title == $body);
 148 }
 149
 150 function add_page_info_data($data) {
 151         call_hooks('page_info_data', $data);
 152
 153         // It maybe is a rich content, but if it does have everything that a link has,
 154         // then treat it that way
 155         if (($data["type"] == "rich") AND is_string($data["title"]) AND
 156                 is_string($data["text"]) AND (sizeof($data["images"]) > 0)) {
 157                 $data["type"] = "link";
 158         }
 159
 160         if ((($data["type"] != "link") AND ($data["type"] != "video") AND ($data["type"] != "photo")) OR ($data["title"] == $data["url"])) {
 161                 return "";
 162         }
 163
 164         if ($no_photos AND ($data["type"] == "photo")) {
 165                 return "";
 166         }
 167
 168         if (sizeof($data["images"]) > 0) {
 169                 $preview = $data["images"][0];
 170         } else {
 171                 $preview = "";
 172         }
 173
 174         // Escape some bad characters
 175         $data["url"] = str_replace(array("[", "]"), array("&#91;", "&#93;"), htmlentities($data["url"], ENT_QUOTES, 'UTF-8', false));
 176         $data["title"] = str_replace(array("[", "]"), array("&#91;", "&#93;"), htmlentities($data["title"], ENT_QUOTES, 'UTF-8', false));
 177
 178         $text = "[attachment type='".$data["type"]."'";
 179
 180         if ($data["text"] == "") {
 181                 $data["text"] = $data["title"];
 182         }
 183
 184         if ($data["text"] == "") {
 185                 $data["text"] = $data["url"];
 186         }
 187
 188         if ($data["url"] != "") {
 189                 $text .= " url='".$data["url"]."'";
 190         }
 191
 192         if ($data["title"] != "") {
 193                 $text .= " title='".$data["title"]."'";
 194         }
 195
 196         if (sizeof($data["images"]) > 0) {
 197                 $preview = str_replace(array("[", "]"), array("&#91;", "&#93;"), htmlentities($data["images"][0]["src"], ENT_QUOTES, 'UTF-8', false));
 198                 // if the preview picture is larger than 500 pixels then show it in a larger mode
 199                 // But only, if the picture isn't higher than large (To prevent huge posts)
 200                 if (($data["images"][0]["width"] >= 500) AND ($data["images"][0]["width"] >= $data["images"][0]["height"])) {
 201                         $text .= " image='".$preview."'";
 202                 } else {
 203                         $text .= " preview='".$preview."'";
 204                 }
 205         }
 206
 207         $text .= "]".$data["text"]."[/attachment]";
 208
 209         $hashtags = "";
 210         if (isset($data["keywords"]) AND count($data["keywords"])) {
 211                 $hashtags = "\n";
 212                 foreach ($data["keywords"] AS $keyword) {
 213                         /// @todo make a positive list of allowed characters
 214                         $hashtag = str_replace(array(" ", "+", "/", ".", "#", "'", "’", "`", "(", ")", "„", "“"),
 215                                                 array("","", "", "", "", "", "", "", "", "", "", ""), $keyword);
 216                         $hashtags .= "#[url=".App::get_baseurl()."/search?tag=".rawurlencode($hashtag)."]".$hashtag."[/url] ";
 217                 }
 218         }
 219
 220         return "\n".$text.$hashtags;
 221 }
 222
 223 function query_page_info($url, $no_photos = false, $photo = "", $keywords = false, $keyword_blacklist = "") {
 224
 225         $data = ParseUrl::getSiteinfoCached($url, true);
 226
 227         if ($photo != "")
 228                 $data["images"][0]["src"] = $photo;
 229
 230         logger('fetch page info for '.$url.' '.print_r($data, true), LOGGER_DEBUG);
 231
 232         if (!$keywords AND isset($data["keywords"]))
 233                 unset($data["keywords"]);
 234
 235         if (($keyword_blacklist != "") AND isset($data["keywords"])) {
 236                 $list = explode(",", $keyword_blacklist);
 237                 foreach ($list AS $keyword) {
 238                         $keyword = trim($keyword);
 239                         $index = array_search($keyword, $data["keywords"]);
 240                         if ($index !== false)
 241                                 unset($data["keywords"][$index]);
 242                 }
 243         }
 244
 245         return($data);
 246 }
 247
 248 function add_page_keywords($url, $no_photos = false, $photo = "", $keywords = false, $keyword_blacklist = "") {
 249         $data = query_page_info($url, $no_photos, $photo, $keywords, $keyword_blacklist);
 250
 251         $tags = "";
 252         if (isset($data["keywords"]) AND count($data["keywords"])) {
 253                 foreach ($data["keywords"] AS $keyword) {
 254                         $hashtag = str_replace(array(" ", "+", "/", ".", "#", "'"),
 255                                                 array("","", "", "", "", ""), $keyword);
 256
 257                         if ($tags != "")
 258                                 $tags .= ",";
 259
 260                         $tags .= "#[url=".App::get_baseurl()."/search?tag=".rawurlencode($hashtag)."]".$hashtag."[/url]";
 261                 }
 262         }
 263
 264         return($tags);
 265 }
 266
 267 function add_page_info($url, $no_photos = false, $photo = "", $keywords = false, $keyword_blacklist = "") {
 268         $data = query_page_info($url, $no_photos, $photo, $keywords, $keyword_blacklist);
 269
 270         $text = add_page_info_data($data);
 271
 272         return($text);
 273 }
 274
 275 function add_page_info_to_body($body, $texturl = false, $no_photos = false) {
 276
 277         logger('add_page_info_to_body: fetch page info for body '.$body, LOGGER_DEBUG);
 278
 279         $URLSearchString = "^\[\]";
 280
 281         // Fix for Mastodon where the mentions are in a different format
 282         $body = preg_replace("/\[url\=([$URLSearchString]*)\]([#!@])(.*?)\[\/url\]/ism",
 283                                 '$2[url=$1]$3[/url]', $body);
 284
 285         // Adding these spaces is a quick hack due to my problems with regular expressions :)
 286         preg_match("/[^!#@]\[url\]([$URLSearchString]*)\[\/url\]/ism", " ".$body, $matches);
 287
 288         if (!$matches)
 289                 preg_match("/[^!#@]\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", " ".$body, $matches);
 290
 291         // Convert urls without bbcode elements
 292         if (!$matches AND $texturl) {
 293                 preg_match("/([^\]\='".'"'."]|^)(https?\:\/\/[a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", " ".$body, $matches);
 294
 295                 // Yeah, a hack. I really hate regular expressions :)
 296                 if ($matches)
 297                         $matches[1] = $matches[2];
 298         }
 299
 300         if ($matches)
 301                 $footer = add_page_info($matches[1], $no_photos);
 302
 303         // Remove the link from the body if the link is attached at the end of the post
 304         if (isset($footer) AND (trim($footer) != "") AND (strpos($footer, $matches[1]))) {
 305                 $removedlink = trim(str_replace($matches[1], "", $body));
 306                 if (($removedlink == "") OR strstr($body, $removedlink))
 307                         $body = $removedlink;
 308
 309                 $url = str_replace(array('/', '.'), array('\/', '\.'), $matches[1]);
 310                 $removedlink = preg_replace("/\[url\=".$url."\](.*?)\[\/url\]/ism", '', $body);
 311                 if (($removedlink == "") OR strstr($body, $removedlink))
 312                         $body = $removedlink;
 313         }
 314
 315         // Add the page information to the bottom
 316         if (isset($footer) AND (trim($footer) != ""))
 317                 $body .= $footer;
 318
 319         return $body;
 320 }
 321
 322 /**
 323  * Adds a "lang" specification in a "postopts" element of given $arr,
 324  * if possible and not already present.
 325  * Expects "body" element to exist in $arr.
 326  *
 327  * @todo Add a parameter to request forcing override
 328  */
 329 function item_add_language_opt(&$arr) {
 330
 331         if (version_compare(PHP_VERSION, '5.3.0', '<')) return; // LanguageDetect.php not available ?
 332
 333         if ( x($arr, 'postopts') )
 334         {
 335                 if ( strstr($arr['postopts'], 'lang=') )
 336                 {
 337                         // do not override
 338                         /// @TODO Add parameter to request overriding
 339                         return;
 340                 }
 341                 $postopts = $arr['postopts'];
 342         } else {
 343                 $postopts = "";
 344         }
 345
 346         require_once('library/langdet/Text/LanguageDetect.php');
 347         $naked_body = preg_replace('/\[(.+?)\]/','',$arr['body']);
 348         $l = new Text_LanguageDetect;
 349         //$lng = $l->detectConfidence($naked_body);
 350         //$arr['postopts'] = (($lng['language']) ? 'lang=' . $lng['language'] . ';' . $lng['confidence'] : '');
 351         $lng = $l->detect($naked_body, 3);
 352
 353         if (sizeof($lng) > 0) {
 354                 if ($postopts != "") $postopts .= '&'; // arbitrary separator, to be reviewed
 355                 $postopts .= 'lang=';
 356                 $sep = "";
 357                 foreach ($lng as $language => $score) {
 358                         $postopts .= $sep . $language.";".$score;
 359                         $sep = ':';
 360                 }
 361                 $arr['postopts'] = $postopts;
 362         }
 363 }
 364
 365 /**
 366  * @brief Creates an unique guid out of a given uri
 367  *
 368  * @param string $uri uri of an item entry
 369  * @param string $host (Optional) hostname for the GUID prefix
 370  * @return string unique guid
 371  */
 372 function uri_to_guid($uri, $host = "") {
 373
 374         // Our regular guid routine is using this kind of prefix as well
 375         // We have to avoid that different routines could accidentally create the same value
 376         $parsed = parse_url($uri);
 377
 378         if ($host == "") {
 379                 $host = $parsed["host"];
 380         }
 381
 382         $guid_prefix = hash("crc32", $host);
 383
 384         // Remove the scheme to make sure that "https" and "http" doesn't make a difference
 385         unset($parsed["scheme"]);
 386
 387         $host_id = implode("/", $parsed);
 388
 389         // We could use any hash algorithm since it isn't a security issue
 390         $host_hash = hash("ripemd128", $host_id);
 391
 392         return $guid_prefix.$host_hash;
 393 }
 394
 395 function item_store($arr,$force_parent = false, $notify = false, $dontcache = false) {
 396
 397         $a = get_app();
 398
 399         // If it is a posting where users should get notifications, then define it as wall posting
 400         if ($notify) {
 401                 $arr['wall'] = 1;
 402                 $arr['type'] = 'wall';
 403                 $arr['origin'] = 1;
 404                 $arr['last-child'] = 1;
 405                 $arr['network'] = NETWORK_DFRN;
 406
 407                 // We have to avoid duplicates. So we create the GUID in form of a hash of the plink or uri.
 408                 // In difference to the call to "uri_to_guid" several lines below we add the hash of our own host.
 409                 // This is done because our host is the original creator of the post.
 410                 if (isset($arr['plink'])) {
 411                         $arr['guid'] = uri_to_guid($arr['plink'], $a->get_hostname());
 412                 } elseif (isset($arr['uri'])) {
 413                         $arr['guid'] = uri_to_guid($arr['uri'], $a->get_hostname());
 414                 }
 415         }
 416
 417         // If a Diaspora signature structure was passed in, pull it out of the
 418         // item array and set it aside for later storage.
 419
 420         $dsprsig = null;
 421         if (x($arr,'dsprsig')) {
 422                 $encoded_signature = $arr['dsprsig'];
 423                 $dsprsig = json_decode(base64_decode($arr['dsprsig']));
 424                 unset($arr['dsprsig']);
 425         }
 426
 427         // Converting the plink
 428         if ($arr['network'] == NETWORK_OSTATUS) {
 429                 if (isset($arr['plink']))
 430                         $arr['plink'] = ostatus::convert_href($arr['plink']);
 431                 elseif (isset($arr['uri']))
 432                         $arr['plink'] = ostatus::convert_href($arr['uri']);
 433         }
 434
 435         if (x($arr, 'gravity'))
 436                 $arr['gravity'] = intval($arr['gravity']);
 437         elseif ($arr['parent-uri'] === $arr['uri'])
 438                 $arr['gravity'] = 0;
 439         elseif (activity_match($arr['verb'],ACTIVITY_POST))
 440                 $arr['gravity'] = 6;
 441         else
 442                 $arr['gravity'] = 6;   // extensible catchall
 443
 444         if (! x($arr,'type'))
 445                 $arr['type']      = 'remote';
 446
 447
 448
 449         /* check for create  date and expire time */
 450         $uid = intval($arr['uid']);
 451         $r = q("SELECT expire FROM user WHERE uid = %d", intval($uid));
 452         if (dbm::is_result($r)) {
 453                 $expire_interval = $r[0]['expire'];
 454                 if ($expire_interval>0) {
 455                         $expire_date =  new DateTime( '- '.$expire_interval.' days', new DateTimeZone('UTC'));
 456                         $created_date = new DateTime($arr['created'], new DateTimeZone('UTC'));
 457                         if ($created_date < $expire_date) {
 458                                 logger('item-store: item created ('.$arr['created'].') before expiration time ('.$expire_date->format(DateTime::W3C).'). ignored. ' . print_r($arr,true), LOGGER_DEBUG);
 459                                 return 0;
 460                         }
 461                 }
 462         }
 463
 464         // Do we already have this item?
 465         // We have to check several networks since Friendica posts could be repeated via OStatus (maybe Diasporsa as well)
 466         if (in_array(trim($arr['network']), array(NETWORK_DIASPORA, NETWORK_DFRN, NETWORK_OSTATUS, ""))) {
 467                 $r = q("SELECT `id`, `network` FROM `item` WHERE `uri` = '%s' AND `uid` = %d AND `network` IN ('%s', '%s', '%s')  LIMIT 1",
 468                                 dbesc(trim($arr['uri'])),
 469                                 intval($uid),
 470                                 dbesc(NETWORK_DIASPORA),
 471                                 dbesc(NETWORK_DFRN),
 472                                 dbesc(NETWORK_OSTATUS)
 473                         );
 474                 if ($r) {
 475                         // We only log the entries with a different user id than 0. Otherwise we would have too many false positives
 476                         if ($uid != 0)
 477                                 logger("Item with uri ".$arr['uri']." already existed for user ".$uid." with id ".$r[0]["id"]." target network ".$r[0]["network"]." - new network: ".$arr['network']);
 478                         return($r[0]["id"]);
 479                 }
 480         }
 481
 482         // Shouldn't happen but we want to make absolutely sure it doesn't leak from a plugin.
 483         // Deactivated, since the bbcode parser can handle with it - and it destroys posts with some smileys that contain "<"
 484         //if ((strpos($arr['body'],'<') !== false) || (strpos($arr['body'],'>') !== false))
 485         //      $arr['body'] = strip_tags($arr['body']);
 486
 487         item_add_language_opt($arr);
 488
 489         if ($notify)
 490                 $guid_prefix = "";
 491         elseif ((trim($arr['guid']) == "") AND (trim($arr['plink']) != ""))
 492                 $arr['guid'] = uri_to_guid($arr['plink']);
 493         elseif ((trim($arr['guid']) == "") AND (trim($arr['uri']) != ""))
 494                 $arr['guid'] = uri_to_guid($arr['uri']);
 495         else {
 496                 $parsed = parse_url($arr["author-link"]);
 497                 $guid_prefix = hash("crc32", $parsed["host"]);
 498         }
 499
 500         $arr['wall']          = ((x($arr,'wall'))          ? intval($arr['wall'])                : 0);
 501         $arr['guid']          = ((x($arr,'guid'))          ? notags(trim($arr['guid']))          : get_guid(32, $guid_prefix));
 502         $arr['uri']           = ((x($arr,'uri'))           ? notags(trim($arr['uri']))           : item_new_uri($a->get_hostname(), $uid, $arr['guid']));
 503         $arr['extid']         = ((x($arr,'extid'))         ? notags(trim($arr['extid']))         : '');
 504         $arr['author-name']   = ((x($arr,'author-name'))   ? trim($arr['author-name'])   : '');
 505         $arr['author-link']   = ((x($arr,'author-link'))   ? notags(trim($arr['author-link']))   : '');
 506         $arr['author-avatar'] = ((x($arr,'author-avatar')) ? notags(trim($arr['author-avatar'])) : '');
 507         $arr['owner-name']    = ((x($arr,'owner-name'))    ? trim($arr['owner-name'])    : '');
 508         $arr['owner-link']    = ((x($arr,'owner-link'))    ? notags(trim($arr['owner-link']))    : '');
 509         $arr['owner-avatar']  = ((x($arr,'owner-avatar'))  ? notags(trim($arr['owner-avatar']))  : '');
 510         $arr['created']       = ((x($arr,'created') !== false) ? datetime_convert('UTC','UTC',$arr['created']) : datetime_convert());
 511         $arr['edited']        = ((x($arr,'edited')  !== false) ? datetime_convert('UTC','UTC',$arr['edited'])  : datetime_convert());
 512         $arr['commented']     = ((x($arr,'commented')  !== false) ? datetime_convert('UTC','UTC',$arr['commented'])  : datetime_convert());
 513         $arr['received']      = ((x($arr,'received')  !== false) ? datetime_convert('UTC','UTC',$arr['received'])  : datetime_convert());
 514         $arr['changed']       = ((x($arr,'changed')  !== false) ? datetime_convert('UTC','UTC',$arr['changed'])  : datetime_convert());
 515         $arr['title']         = ((x($arr,'title'))         ? trim($arr['title'])         : '');
 516         $arr['location']      = ((x($arr,'location'))      ? trim($arr['location'])      : '');
 517         $arr['coord']         = ((x($arr,'coord'))         ? notags(trim($arr['coord']))         : '');
 518         $arr['last-child']    = ((x($arr,'last-child'))    ? intval($arr['last-child'])          : 0 );
 519         $arr['visible']       = ((x($arr,'visible') !== false) ? intval($arr['visible'])         : 1 );
 520         $arr['deleted']       = 0;
 521         $arr['parent-uri']    = ((x($arr,'parent-uri'))    ? notags(trim($arr['parent-uri']))    : $arr['uri']);
 522         $arr['verb']          = ((x($arr,'verb'))          ? notags(trim($arr['verb']))          : '');
 523         $arr['object-type']   = ((x($arr,'object-type'))   ? notags(trim($arr['object-type']))   : '');
 524         $arr['object']        = ((x($arr,'object'))        ? trim($arr['object'])                : '');
 525         $arr['target-type']   = ((x($arr,'target-type'))   ? notags(trim($arr['target-type']))   : '');
 526         $arr['target']        = ((x($arr,'target'))        ? trim($arr['target'])                : '');
 527         $arr['plink']         = ((x($arr,'plink'))         ? notags(trim($arr['plink']))         : '');
 528         $arr['allow_cid']     = ((x($arr,'allow_cid'))     ? trim($arr['allow_cid'])             : '');
 529         $arr['allow_gid']     = ((x($arr,'allow_gid'))     ? trim($arr['allow_gid'])             : '');
 530         $arr['deny_cid']      = ((x($arr,'deny_cid'))      ? trim($arr['deny_cid'])              : '');
 531         $arr['deny_gid']      = ((x($arr,'deny_gid'))      ? trim($arr['deny_gid'])              : '');
 532         $arr['private']       = ((x($arr,'private'))       ? intval($arr['private'])             : 0 );
 533         $arr['bookmark']      = ((x($arr,'bookmark'))      ? intval($arr['bookmark'])            : 0 );
 534         $arr['body']          = ((x($arr,'body'))          ? trim($arr['body'])                  : '');
 535         $arr['tag']           = ((x($arr,'tag'))           ? notags(trim($arr['tag']))           : '');
 536         $arr['attach']        = ((x($arr,'attach'))        ? notags(trim($arr['attach']))        : '');
 537         $arr['app']           = ((x($arr,'app'))           ? notags(trim($arr['app']))           : '');
 538         $arr['origin']        = ((x($arr,'origin'))        ? intval($arr['origin'])              : 0 );
 539         $arr['network']       = ((x($arr,'network'))       ? trim($arr['network'])               : '');
 540         $arr['postopts']      = ((x($arr,'postopts'))      ? trim($arr['postopts'])              : '');
 541         $arr['resource-id']   = ((x($arr,'resource-id'))   ? trim($arr['resource-id'])           : '');
 542         $arr['event-id']      = ((x($arr,'event-id'))      ? intval($arr['event-id'])            : 0 );
 543         $arr['inform']        = ((x($arr,'inform'))        ? trim($arr['inform'])                : '');
 544         $arr['file']          = ((x($arr,'file'))          ? trim($arr['file'])                  : '');
 545
 546         // Items cannot be stored before they happen ...
 547         if ($arr['created'] > datetime_convert())
 548                 $arr['created'] = datetime_convert();
 549
 550         // We haven't invented time travel by now.
 551         if ($arr['edited'] > datetime_convert())
 552                 $arr['edited'] = datetime_convert();
 553
 554         if (($arr['author-link'] == "") AND ($arr['owner-link'] == ""))
 555                 logger("Both author-link and owner-link are empty. Called by: ".App::callstack(), LOGGER_DEBUG);
 556
 557         if ($arr['plink'] == "") {
 558                 $arr['plink'] = App::get_baseurl().'/display/'.urlencode($arr['guid']);
 559         }
 560
 561         if ($arr['network'] == "") {
 562                 $r = q("SELECT `network` FROM `contact` WHERE `network` IN ('%s', '%s', '%s') AND `nurl` = '%s' AND `uid` = %d LIMIT 1",
 563                         dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA), dbesc(NETWORK_OSTATUS),
 564                         dbesc(normalise_link($arr['author-link'])),
 565                         intval($arr['uid'])
 566                 );
 567
 568                 if (!dbm::is_result($r))
 569                         $r = q("SELECT `network` FROM `gcontact` WHERE `network` IN ('%s', '%s', '%s') AND `nurl` = '%s' LIMIT 1",
 570                                 dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA), dbesc(NETWORK_OSTATUS),
 571                                 dbesc(normalise_link($arr['author-link']))
 572                         );
 573
 574                 if (!dbm::is_result($r))
 575                         $r = q("SELECT `network` FROM `contact` WHERE `id` = %d AND `uid` = %d LIMIT 1",
 576                                 intval($arr['contact-id']),
 577                                 intval($arr['uid'])
 578                         );
 579
 580                 if (dbm::is_result($r))
 581                         $arr['network'] = $r[0]["network"];
 582
 583                 // Fallback to friendica (why is it empty in some cases?)
 584                 if ($arr['network'] == "")
 585                         $arr['network'] = NETWORK_DFRN;
 586
 587                 logger("item_store: Set network to ".$arr["network"]." for ".$arr["uri"], LOGGER_DEBUG);
 588         }
 589
 590         // The contact-id should be set before "item_store" was called - but there seems to be some issues
 591         if ($arr["contact-id"] == 0) {
 592                 // First we are looking for a suitable contact that matches with the author of the post
 593                 // This is done only for comments (See below explanation at "gcontact-id")
 594                 if ($arr['parent-uri'] != $arr['uri'])
 595                         $arr["contact-id"] = get_contact($arr['author-link'], $uid);
 596
 597                 // If not present then maybe the owner was found
 598                 if ($arr["contact-id"] == 0)
 599                         $arr["contact-id"] = get_contact($arr['owner-link'], $uid);
 600
 601                 // Still missing? Then use the "self" contact of the current user
 602                 if ($arr["contact-id"] == 0) {
 603                         $r = q("SELECT `id` FROM `contact` WHERE `self` AND `uid` = %d", intval($uid));
 604                         if ($r)
 605                                 $arr["contact-id"] = $r[0]["id"];
 606                 }
 607                 logger("Contact-id was missing for post ".$arr["guid"]." from user id ".$uid." - now set to ".$arr["contact-id"], LOGGER_DEBUG);
 608         }
 609
 610         if ($arr["gcontact-id"] == 0) {
 611                 // The gcontact should mostly behave like the contact. But is is supposed to be global for the system.
 612                 // This means that wall posts, repeated posts, etc. should have the gcontact id of the owner.
 613                 // On comments the author is the better choice.
 614                 if ($arr['parent-uri'] === $arr['uri'])
 615                         $arr["gcontact-id"] = get_gcontact_id(array("url" => $arr['owner-link'], "network" => $arr['network'],
 616                                                                  "photo" => $arr['owner-avatar'], "name" => $arr['owner-name']));
 617                 else
 618                         $arr["gcontact-id"] = get_gcontact_id(array("url" => $arr['author-link'], "network" => $arr['network'],
 619                                                                  "photo" => $arr['author-avatar'], "name" => $arr['author-name']));
 620         }
 621
 622         if ($arr["author-id"] == 0)
 623                 $arr["author-id"] = get_contact($arr["author-link"], 0);
 624
 625         if ($arr["owner-id"] == 0)
 626                 $arr["owner-id"] = get_contact($arr["owner-link"], 0);
 627
 628         if ($arr['guid'] != "") {
 629                 // Checking if there is already an item with the same guid
 630                 logger('checking for an item for user '.$arr['uid'].' on network '.$arr['network'].' with the guid '.$arr['guid'], LOGGER_DEBUG);
 631                 $r = q("SELECT `guid` FROM `item` WHERE `guid` = '%s' AND `network` = '%s' AND `uid` = '%d' LIMIT 1",
 632                         dbesc($arr['guid']), dbesc($arr['network']), intval($arr['uid']));
 633
 634                 if (dbm::is_result($r)) {
 635                         logger('found item with guid '.$arr['guid'].' for user '.$arr['uid'].' on network '.$arr['network'], LOGGER_DEBUG);
 636                         return 0;
 637                 }
 638         }
 639
 640         // Check for hashtags in the body and repair or add hashtag links
 641         item_body_set_hashtags($arr);
 642
 643         $arr['thr-parent'] = $arr['parent-uri'];
 644         if ($arr['parent-uri'] === $arr['uri']) {
 645                 $parent_id = 0;
 646                 $parent_deleted = 0;
 647                 $allow_cid = $arr['allow_cid'];
 648                 $allow_gid = $arr['allow_gid'];
 649                 $deny_cid  = $arr['deny_cid'];
 650                 $deny_gid  = $arr['deny_gid'];
 651                 $notify_type = 'wall-new';
 652         } else {
 653
 654                 // find the parent and snarf the item id and ACLs
 655                 // and anything else we need to inherit
 656
 657                 $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d ORDER BY `id` ASC LIMIT 1",
 658                         dbesc($arr['parent-uri']),
 659                         intval($arr['uid'])
 660                 );
 661
 662                 if (dbm::is_result($r)) {
 663
 664                         // is the new message multi-level threaded?
 665                         // even though we don't support it now, preserve the info
 666                         // and re-attach to the conversation parent.
 667
 668                         if ($r[0]['uri'] != $r[0]['parent-uri']) {
 669                                 $arr['parent-uri'] = $r[0]['parent-uri'];
 670                                 $z = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `parent-uri` = '%s' AND `uid` = %d
 671                                         ORDER BY `id` ASC LIMIT 1",
 672                                         dbesc($r[0]['parent-uri']),
 673                                         dbesc($r[0]['parent-uri']),
 674                                         intval($arr['uid'])
 675                                 );
 676                                 if ($z && count($z))
 677                                         $r = $z;
 678                         }
 679
 680                         $parent_id      = $r[0]['id'];
 681                         $parent_deleted = $r[0]['deleted'];
 682                         $allow_cid      = $r[0]['allow_cid'];
 683                         $allow_gid      = $r[0]['allow_gid'];
 684                         $deny_cid       = $r[0]['deny_cid'];
 685                         $deny_gid       = $r[0]['deny_gid'];
 686                         $arr['wall']    = $r[0]['wall'];
 687                         $notify_type    = 'comment-new';
 688
 689                         // if the parent is private, force privacy for the entire conversation
 690                         // This differs from the above settings as it subtly allows comments from
 691                         // email correspondents to be private even if the overall thread is not.
 692
 693                         if ($r[0]['private'])
 694                                 $arr['private'] = $r[0]['private'];
 695
 696                         // Edge case. We host a public forum that was originally posted to privately.
 697                         // The original author commented, but as this is a comment, the permissions
 698                         // weren't fixed up so it will still show the comment as private unless we fix it here.
 699
 700                         if ((intval($r[0]['forum_mode']) == 1) && (! $r[0]['private']))
 701                                 $arr['private'] = 0;
 702
 703
 704                         // If its a post from myself then tag the thread as "mention"
 705                         logger("item_store: Checking if parent ".$parent_id." has to be tagged as mention for user ".$arr['uid'], LOGGER_DEBUG);
 706                         $u = q("SELECT `nickname` FROM `user` WHERE `uid` = %d", intval($arr['uid']));
 707                         if (count($u)) {
 708                                 $a = get_app();
 709                                 $self = normalise_link(App::get_baseurl() . '/profile/' . $u[0]['nickname']);
 710                                 logger("item_store: 'myself' is ".$self." for parent ".$parent_id." checking against ".$arr['author-link']." and ".$arr['owner-link'], LOGGER_DEBUG);
 711                                 if ((normalise_link($arr['author-link']) == $self) OR (normalise_link($arr['owner-link']) == $self)) {
 712                                         q("UPDATE `thread` SET `mention` = 1 WHERE `iid` = %d", intval($parent_id));
 713                                         logger("item_store: tagged thread ".$parent_id." as mention for user ".$self, LOGGER_DEBUG);
 714                                 }
 715                         }
 716                 } else {
 717
 718                         // Allow one to see reply tweets from status.net even when
 719                         // we don't have or can't see the original post.
 720
 721                         if ($force_parent) {
 722                                 logger('item_store: $force_parent=true, reply converted to top-level post.');
 723                                 $parent_id = 0;
 724                                 $arr['parent-uri'] = $arr['uri'];
 725                                 $arr['gravity'] = 0;
 726                         } else {
 727                                 logger('item_store: item parent '.$arr['parent-uri'].' for '.$arr['uid'].' was not found - ignoring item');
 728                                 return 0;
 729                         }
 730
 731                         $parent_deleted = 0;
 732                 }
 733         }
 734
 735         $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `network` IN ('%s', '%s') AND `uid` = %d LIMIT 1",
 736                 dbesc($arr['uri']),
 737                 dbesc($arr['network']),
 738                 dbesc(NETWORK_DFRN),
 739                 intval($arr['uid'])
 740         );
 741         if (dbm::is_result($r)) {
 742                 logger('duplicated item with the same uri found. '.print_r($arr,true));
 743                 return 0;
 744         }
 745
 746         // On Friendica and Diaspora the GUID is unique
 747         if (in_array($arr['network'], array(NETWORK_DFRN, NETWORK_DIASPORA))) {
 748                 $r = q("SELECT `id` FROM `item` WHERE `guid` = '%s' AND `uid` = %d LIMIT 1",
 749                         dbesc($arr['guid']),
 750                         intval($arr['uid'])
 751                 );
 752                 if (dbm::is_result($r)) {
 753                         logger('duplicated item with the same guid found. '.print_r($arr,true));
 754                         return 0;
 755                 }
 756         } else {
 757                 // Check for an existing post with the same content. There seems to be a problem with OStatus.
 758                 $r = q("SELECT `id` FROM `item` WHERE `body` = '%s' AND `network` = '%s' AND `created` = '%s' AND `contact-id` = %d AND `uid` = %d LIMIT 1",
 759                         dbesc($arr['body']),
 760                         dbesc($arr['network']),
 761                         dbesc($arr['created']),
 762                         intval($arr['contact-id']),
 763                         intval($arr['uid'])
 764                 );
 765                 if (dbm::is_result($r)) {
 766                         logger('duplicated item with the same body found. '.print_r($arr,true));
 767                         return 0;
 768                 }
 769         }
 770
 771         // Is this item available in the global items (with uid=0)?
 772         if ($arr["uid"] == 0) {
 773                 $arr["global"] = true;
 774
 775                 // Set the global flag on all items if this was a global item entry
 776                 q("UPDATE `item` SET `global` = 1 WHERE `uri` = '%s'", dbesc($arr["uri"]));
 777         } else {
 778                 $isglobal = q("SELECT `global` FROM `item` WHERE `uid` = 0 AND `uri` = '%s'", dbesc($arr["uri"]));
 779
 780                 $arr["global"] = (count($isglobal) > 0);
 781         }
 782
 783         // ACL settings
 784         if (strlen($allow_cid) || strlen($allow_gid) || strlen($deny_cid) || strlen($deny_gid))
 785                 $private = 1;
 786         else
 787                 $private = $arr['private'];
 788
 789         $arr["allow_cid"] = $allow_cid;
 790         $arr["allow_gid"] = $allow_gid;
 791         $arr["deny_cid"] = $deny_cid;
 792         $arr["deny_gid"] = $deny_gid;
 793         $arr["private"] = $private;
 794         $arr["deleted"] = $parent_deleted;
 795
 796         // Fill the cache field
 797         put_item_in_cache($arr);
 798
 799         if ($notify)
 800                 call_hooks('post_local',$arr);
 801         else
 802                 call_hooks('post_remote',$arr);
 803
 804         if (x($arr,'cancel')) {
 805                 logger('item_store: post cancelled by plugin.');
 806                 return 0;
 807         }
 808
 809         // Check for already added items.
 810         // There is a timing issue here that sometimes creates double postings.
 811         // An unique index would help - but the limitations of MySQL (maximum size of index values) prevent this.
 812         if ($arr["uid"] == 0) {
 813                 $r = qu("SELECT `id` FROM `item` WHERE `uri` = '%s' AND `uid` = 0 LIMIT 1", dbesc(trim($arr['uri'])));
 814                 if (dbm::is_result($r)) {
 815                         logger('Global item already stored. URI: '.$arr['uri'].' on network '.$arr['network'], LOGGER_DEBUG);
 816                         return 0;
 817                 }
 818         }
 819
 820         // Store the unescaped version
 821         $unescaped = $arr;
 822
 823         dbesc_array($arr);
 824
 825         logger('item_store: ' . print_r($arr,true), LOGGER_DATA);
 826
 827         q("COMMIT");
 828         q("START TRANSACTION;");
 829
 830         $r = dbq("INSERT INTO `item` (`"
 831                         . implode("`, `", array_keys($arr))
 832                         . "`) VALUES ('"
 833                         . implode("', '", array_values($arr))
 834                         . "')");
 835
 836         // And restore it
 837         $arr = $unescaped;
 838
 839         // When the item was successfully stored we fetch the ID of the item.
 840         if (dbm::is_result($r)) {
 841                 $r = q("SELECT LAST_INSERT_ID() AS `item-id`");
 842                 if (dbm::is_result($r)) {
 843                         $current_post = $r[0]['item-id'];
 844                 } else {
 845                         // This shouldn't happen
 846                         $current_post = 0;
 847                 }
 848         } else {
 849                 // This can happen - for example - if there are locking timeouts.
 850                 q("ROLLBACK");
 851
 852                 // Store the data into a spool file so that we can try again later.
 853
 854                 // At first we restore the Diaspora signature that we removed above.
 855                 if (isset($encoded_signature)) {
 856                         $arr['dsprsig'] = $encoded_signature;
 857                 }
 858
 859                 // Now we store the data in the spool directory
 860                 $file = 'item-'.round(microtime(true) * 10000).".msg";
 861                 $spool = get_spoolpath().'/'.$file;
 862                 file_put_contents($spool, json_encode($arr));
 863                 logger("Item wasn't stored - Item was spooled into file ".$file, LOGGER_DEBUG);
 864                 return 0;
 865         }
 866
 867         if ($current_post == 0) {
 868                 // This is one of these error messages that never should occur.
 869                 logger("couldn't find created item - we better quit now.");
 870                 q("ROLLBACK");
 871                 return 0;
 872         }
 873
 874         // How much entries have we created?
 875         // We wouldn't need this query when we could use an unique index - but MySQL has length problems with them.
 876         $r = q("SELECT COUNT(*) AS `entries` FROM `item` WHERE `uri` = '%s' AND `uid` = %d AND `network` = '%s'",
 877                 dbesc($arr['uri']),
 878                 intval($arr['uid']),
 879                 dbesc($arr['network'])
 880         );
 881
 882         if (!dbm::is_result($r)) {
 883                 // This shouldn't happen, since COUNT always works when the database connection is there.
 884                 logger("We couldn't count the stored entries. Very strange ...");
 885                 q("ROLLBACK");
 886                 return 0;
 887         }
 888
 889         if ($r[0]["entries"] > 1) {
 890                 // There are duplicates. We delete our just created entry.
 891                 logger('Duplicated post occurred. uri = '.$arr['uri'].' uid = '.$arr['uid']);
 892
 893                 // Yes, we could do a rollback here - but we are having many users with MyISAM.
 894                 q("DELETE FROM `item` WHERE `id` = %d", intval($current_post));
 895                 q("COMMIT");
 896                 return 0;
 897         } elseif ($r[0]["entries"] == 0) {
 898                 // This really should never happen since we quit earlier if there were problems.
 899                 logger("Something is terribly wrong. We haven't found our created entry.");
 900                 q("ROLLBACK");
 901                 return 0;
 902         }
 903
 904         logger('item_store: created item '.$current_post);
 905         item_set_last_item($arr);
 906
 907         if (!$parent_id || ($arr['parent-uri'] === $arr['uri']))
 908                 $parent_id = $current_post;
 909
 910         // Set parent id
 911         $r = q("UPDATE `item` SET `parent` = %d WHERE `id` = %d",
 912                 intval($parent_id),
 913                 intval($current_post)
 914         );
 915
 916         $arr['id'] = $current_post;
 917         $arr['parent'] = $parent_id;
 918
 919         // update the commented timestamp on the parent
 920         // Only update "commented" if it is really a comment
 921         if (($arr['verb'] == ACTIVITY_POST) OR !get_config("system", "like_no_comment"))
 922                 q("UPDATE `item` SET `commented` = '%s', `changed` = '%s' WHERE `id` = %d",
 923                         dbesc(datetime_convert()),
 924                         dbesc(datetime_convert()),
 925                         intval($parent_id)
 926                 );
 927         else
 928                 q("UPDATE `item` SET `changed` = '%s' WHERE `id` = %d",
 929                         dbesc(datetime_convert()),
 930                         intval($parent_id)
 931                 );
 932
 933         if ($dsprsig) {
 934
 935                 // Friendica servers lower than 3.4.3-2 had double encoded the signature ...
 936                 // We can check for this condition when we decode and encode the stuff again.
 937                 if (base64_encode(base64_decode(base64_decode($dsprsig->signature))) == base64_decode($dsprsig->signature)) {
 938                         $dsprsig->signature = base64_decode($dsprsig->signature);
 939                         logger("Repaired double encoded signature from handle ".$dsprsig->signer, LOGGER_DEBUG);
 940                 }
 941
 942                 q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
 943                         intval($current_post),
 944                         dbesc($dsprsig->signed_text),
 945                         dbesc($dsprsig->signature),
 946                         dbesc($dsprsig->signer)
 947                 );
 948         }
 949
 950         $deleted = tag_deliver($arr['uid'],$current_post);
 951
 952         // current post can be deleted if is for a community page and no mention are
 953         // in it.
 954         if (!$deleted AND !$dontcache) {
 955
 956                 $r = q('SELECT * FROM `item` WHERE id = %d', intval($current_post));
 957                 if (count($r) == 1) {
 958                         if ($notify)
 959                                 call_hooks('post_local_end', $r[0]);
 960                         else
 961                                 call_hooks('post_remote_end', $r[0]);
 962                 } else
 963                         logger('item_store: new item not found in DB, id ' . $current_post);
 964         }
 965
 966         if ($arr['parent-uri'] === $arr['uri']) {
 967                 add_thread($current_post);
 968         } else {
 969                 update_thread($parent_id);
 970         }
 971
 972         q("COMMIT");
 973
 974         // Due to deadlock issues with the "term" table we are doing these steps after the commit.
 975         // This is not perfect - but a workable solution until we found the reason for the problem.
 976         create_tags_from_item($current_post);
 977         create_files_from_item($current_post);
 978
 979         // If this is now the last-child, force all _other_ children of this parent to *not* be last-child
 980         // It is done after the transaction to avoid dead locks.
 981         if ($arr['last-child']) {
 982                 $r = q("UPDATE `item` SET `last-child` = 0 WHERE `parent-uri` = '%s' AND `uid` = %d AND `id` != %d",
 983                         dbesc($arr['uri']),
 984                         intval($arr['uid']),
 985                         intval($current_post)
 986                 );
 987         }
 988
 989         if ($arr['parent-uri'] === $arr['uri']) {
 990                 add_shadow_thread($current_post);
 991         } else {
 992                 add_shadow_entry($current_post);
 993         }
 994
 995         check_item_notification($current_post, $uid);
 996
 997         if ($notify)
 998                 proc_run(PRIORITY_HIGH, "include/notifier.php", $notify_type, $current_post);
 999
1000         return $current_post;
1001 }
1002
1003 /**
1004  * @brief Set "success_update" and "last-item" to the date of the last time we heard from this contact
1005  *
1006  * This can be used to filter for inactive contacts.
1007  * Only do this for public postings to avoid privacy problems, since poco data is public.
1008  * Don't set this value if it isn't from the owner (could be an author that we don't know)
1009  *
1010  * @param array $arr Contains the just posted item record
1011  */
1012 function item_set_last_item($arr) {
1013
1014         $update = (!$arr['private'] AND (($arr["author-link"] === $arr["owner-link"]) OR ($arr["parent-uri"] === $arr["uri"])));
1015
1016         // Is it a forum? Then we don't care about the rules from above
1017         if (!$update AND ($arr["network"] == NETWORK_DFRN) AND ($arr["parent-uri"] === $arr["uri"])) {
1018                 $isforum = q("SELECT `forum` FROM `contact` WHERE `id` = %d AND `forum`",
1019                                 intval($arr['contact-id']));
1020                 if ($isforum) {
1021                         $update = true;
1022                 }
1023         }
1024
1025         if ($update) {
1026                 q("UPDATE `contact` SET `success_update` = '%s', `last-item` = '%s' WHERE `id` = %d",
1027                         dbesc($arr['received']),
1028                         dbesc($arr['received']),
1029                         intval($arr['contact-id'])
1030                 );
1031         }
1032         // Now do the same for the system wide contacts with uid=0
1033         if (!$arr['private']) {
1034                 q("UPDATE `contact` SET `success_update` = '%s', `last-item` = '%s' WHERE `id` = %d",
1035                         dbesc($arr['received']),
1036                         dbesc($arr['received']),
1037                         intval($arr['owner-id'])
1038                 );
1039
1040                 if ($arr['owner-id'] != $arr['author-id']) {
1041                         q("UPDATE `contact` SET `success_update` = '%s', `last-item` = '%s' WHERE `id` = %d",
1042                                 dbesc($arr['received']),
1043                                 dbesc($arr['received']),
1044                                 intval($arr['author-id'])
1045                         );
1046                 }
1047         }
1048 }
1049
1050 function item_body_set_hashtags(&$item) {
1051
1052         $tags = get_tags($item["body"]);
1053
1054         // No hashtags?
1055         if (!count($tags))
1056                 return(false);
1057
1058         // This sorting is important when there are hashtags that are part of other hashtags
1059         // Otherwise there could be problems with hashtags like #test and #test2
1060         rsort($tags);
1061
1062         $a = get_app();
1063
1064         $URLSearchString = "^\[\]";
1065
1066         // All hashtags should point to the home server
1067         //$item["body"] = preg_replace("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1068         //              "#[url=".App::get_baseurl()."/search?tag=$2]$2[/url]", $item["body"]);
1069
1070         //$item["tag"] = preg_replace("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1071         //              "#[url=".App::get_baseurl()."/search?tag=$2]$2[/url]", $item["tag"]);
1072
1073         // mask hashtags inside of url, bookmarks and attachments to avoid urls in urls
1074         $item["body"] = preg_replace_callback("/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1075                 function ($match){
1076                         return("[url=".str_replace("#", "&num;", $match[1])."]".str_replace("#", "&num;", $match[2])."[/url]");
1077                 },$item["body"]);
1078
1079         $item["body"] = preg_replace_callback("/\[bookmark\=([$URLSearchString]*)\](.*?)\[\/bookmark\]/ism",
1080                 function ($match){
1081                         return("[bookmark=".str_replace("#", "&num;", $match[1])."]".str_replace("#", "&num;", $match[2])."[/bookmark]");
1082                 },$item["body"]);
1083
1084         $item["body"] = preg_replace_callback("/\[attachment (.*)\](.*?)\[\/attachment\]/ism",
1085                 function ($match){
1086                         return("[attachment ".str_replace("#", "&num;", $match[1])."]".$match[2]."[/attachment]");
1087                 },$item["body"]);
1088
1089         // Repair recursive urls
1090         $item["body"] = preg_replace("/&num;\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1091                         "&num;$2", $item["body"]);
1092
1093
1094         foreach($tags as $tag) {
1095                 if (strpos($tag,'#') !== 0)
1096                         continue;
1097
1098                 if (strpos($tag,'[url='))
1099                         continue;
1100
1101                 $basetag = str_replace('_',' ',substr($tag,1));
1102
1103                 $newtag = '#[url='.App::get_baseurl().'/search?tag='.rawurlencode($basetag).']'.$basetag.'[/url]';
1104
1105                 $item["body"] = str_replace($tag, $newtag, $item["body"]);
1106
1107                 if (!stristr($item["tag"],"/search?tag=".$basetag."]".$basetag."[/url]")) {
1108                         if (strlen($item["tag"]))
1109                                 $item["tag"] = ','.$item["tag"];
1110                         $item["tag"] = $newtag.$item["tag"];
1111                 }
1112         }
1113
1114         // Convert back the masked hashtags
1115         $item["body"] = str_replace("&num;", "#", $item["body"]);
1116 }
1117
1118 function get_item_guid($id) {
1119         $r = q("SELECT `guid` FROM `item` WHERE `id` = %d LIMIT 1", intval($id));
1120         if (dbm::is_result($r))
1121                 return($r[0]["guid"]);
1122         else
1123                 return("");
1124 }
1125
1126 function get_item_id($guid, $uid = 0) {
1127
1128         $nick = "";
1129         $id = 0;
1130
1131         if ($uid == 0)
1132                 $uid == local_user();
1133
1134         // Does the given user have this item?
1135         if ($uid) {
1136                 $r = q("SELECT `item`.`id`, `user`.`nickname` FROM `item` INNER JOIN `user` ON `user`.`uid` = `item`.`uid`
1137                         WHERE `item`.`visible` = 1 AND `item`.`deleted` = 0 and `item`.`moderated` = 0
1138                                 AND `item`.`guid` = '%s' AND `item`.`uid` = %d", dbesc($guid), intval($uid));
1139                 if (dbm::is_result($r)) {
1140                         $id = $r[0]["id"];
1141                         $nick = $r[0]["nickname"];
1142                 }
1143         }
1144
1145         // Or is it anywhere on the server?
1146         if ($nick == "") {
1147                 $r = q("SELECT `item`.`id`, `user`.`nickname` FROM `item` INNER JOIN `user` ON `user`.`uid` = `item`.`uid`
1148                         WHERE `item`.`visible` = 1 AND `item`.`deleted` = 0 and `item`.`moderated` = 0
1149                                 AND `item`.`allow_cid` = ''  AND `item`.`allow_gid` = ''
1150                                 AND `item`.`deny_cid`  = '' AND `item`.`deny_gid`  = ''
1151                                 AND `item`.`private` = 0 AND `item`.`wall` = 1
1152                                 AND `item`.`guid` = '%s'", dbesc($guid));
1153                 if (dbm::is_result($r)) {
1154                         $id = $r[0]["id"];
1155                         $nick = $r[0]["nickname"];
1156                 }
1157         }
1158         return(array("nick" => $nick, "id" => $id));
1159 }
1160
1161 // return - test
1162 function get_item_contact($item,$contacts) {
1163         if (! count($contacts) || (! is_array($item)))
1164                 return false;
1165         foreach($contacts as $contact) {
1166                 if ($contact['id'] == $item['contact-id']) {
1167                         return $contact;
1168                         break; // NOTREACHED
1169                 }
1170         }
1171         return false;
1172 }
1173
1174 /**
1175  * look for mention tags and setup a second delivery chain for forum/community posts if appropriate
1176  * @param int $uid
1177  * @param int $item_id
1178  * @return bool true if item was deleted, else false
1179  */
1180 function tag_deliver($uid,$item_id) {
1181
1182         //
1183
1184         $a = get_app();
1185
1186         $mention = false;
1187
1188         $u = q("select * from user where uid = %d limit 1",
1189                 intval($uid)
1190         );
1191         if (! count($u))
1192                 return;
1193
1194         $community_page = (($u[0]['page-flags'] == PAGE_COMMUNITY) ? true : false);
1195         $prvgroup = (($u[0]['page-flags'] == PAGE_PRVGROUP) ? true : false);
1196
1197
1198         $i = q("select * from item where id = %d and uid = %d limit 1",
1199                 intval($item_id),
1200                 intval($uid)
1201         );
1202         if (! count($i))
1203                 return;
1204
1205         $item = $i[0];
1206
1207         $link = normalise_link(App::get_baseurl() . '/profile/' . $u[0]['nickname']);
1208
1209         // Diaspora uses their own hardwired link URL in @-tags
1210         // instead of the one we supply with webfinger
1211
1212         $dlink = normalise_link(App::get_baseurl() . '/u/' . $u[0]['nickname']);
1213
1214         $cnt = preg_match_all('/[\@\!]\[url\=(.*?)\](.*?)\[\/url\]/ism',$item['body'],$matches,PREG_SET_ORDER);
1215         if ($cnt) {
1216                 foreach($matches as $mtch) {
1217                         if (link_compare($link,$mtch[1]) || link_compare($dlink,$mtch[1])) {
1218                                 $mention = true;
1219                                 logger('tag_deliver: mention found: ' . $mtch[2]);
1220                         }
1221                 }
1222         }
1223
1224         if (! $mention){
1225                 if ( ($community_page || $prvgroup) &&
1226                           (!$item['wall']) && (!$item['origin']) && ($item['id'] == $item['parent'])){
1227                         // mmh.. no mention.. community page or private group... no wall.. no origin.. top-post (not a comment)
1228                         // delete it!
1229                         logger("tag_deliver: no-mention top-level post to communuty or private group. delete.");
1230                         q("DELETE FROM item WHERE id = %d and uid = %d",
1231                                 intval($item_id),
1232                                 intval($uid)
1233                         );
1234                         return true;
1235                 }
1236                 return;
1237         }
1238
1239         $arr = array('item' => $item, 'user' => $u[0], 'contact' => $r[0]);
1240
1241         call_hooks('tagged', $arr);
1242
1243         if ((! $community_page) && (! $prvgroup))
1244                 return;
1245
1246
1247         // tgroup delivery - setup a second delivery chain
1248         // prevent delivery looping - only proceed
1249         // if the message originated elsewhere and is a top-level post
1250
1251         if (($item['wall']) || ($item['origin']) || ($item['id'] != $item['parent']))
1252                 return;
1253
1254         // now change this copy of the post to a forum head message and deliver to all the tgroup members
1255
1256
1257         $c = q("select name, url, thumb from contact where self = 1 and uid = %d limit 1",
1258                 intval($u[0]['uid'])
1259         );
1260         if (! count($c)) {
1261                 return;
1262         }
1263
1264         // also reset all the privacy bits to the forum default permissions
1265
1266         $private = ($u[0]['allow_cid'] || $u[0]['allow_gid'] || $u[0]['deny_cid'] || $u[0]['deny_gid']) ? 1 : 0;
1267
1268         $forum_mode = (($prvgroup) ? 2 : 1);
1269
1270         q("UPDATE `item` SET `wall` = 1, `origin` = 1, `forum_mode` = %d, `owner-name` = '%s', `owner-link` = '%s', `owner-avatar` = '%s',
1271                 `private` = %d, `allow_cid` = '%s', `allow_gid` = '%s', `deny_cid` = '%s', `deny_gid` = '%s'  WHERE `id` = %d",
1272                 intval($forum_mode),
1273                 dbesc($c[0]['name']),
1274                 dbesc($c[0]['url']),
1275                 dbesc($c[0]['thumb']),
1276                 intval($private),
1277                 dbesc($u[0]['allow_cid']),
1278                 dbesc($u[0]['allow_gid']),
1279                 dbesc($u[0]['deny_cid']),
1280                 dbesc($u[0]['deny_gid']),
1281                 intval($item_id)
1282         );
1283         update_thread($item_id);
1284
1285         proc_run(PRIORITY_HIGH,'include/notifier.php', 'tgroup', $item_id);
1286
1287 }
1288
1289
1290
1291 function tgroup_check($uid,$item) {
1292
1293         $a = get_app();
1294
1295         $mention = false;
1296
1297         // check that the message originated elsewhere and is a top-level post
1298
1299         if (($item['wall']) || ($item['origin']) || ($item['uri'] != $item['parent-uri']))
1300                 return false;
1301
1302
1303         $u = q("select * from user where uid = %d limit 1",
1304                 intval($uid)
1305         );
1306         if (! count($u))
1307                 return false;
1308
1309         $community_page = (($u[0]['page-flags'] == PAGE_COMMUNITY) ? true : false);
1310         $prvgroup = (($u[0]['page-flags'] == PAGE_PRVGROUP) ? true : false);
1311
1312
1313         $link = normalise_link(App::get_baseurl() . '/profile/' . $u[0]['nickname']);
1314
1315         // Diaspora uses their own hardwired link URL in @-tags
1316         // instead of the one we supply with webfinger
1317
1318         $dlink = normalise_link(App::get_baseurl() . '/u/' . $u[0]['nickname']);
1319
1320         $cnt = preg_match_all('/[\@\!]\[url\=(.*?)\](.*?)\[\/url\]/ism',$item['body'],$matches,PREG_SET_ORDER);
1321         if ($cnt) {
1322                 foreach ($matches as $mtch) {
1323                         if (link_compare($link,$mtch[1]) || link_compare($dlink,$mtch[1])) {
1324                                 $mention = true;
1325                                 logger('tgroup_check: mention found: ' . $mtch[2]);
1326                         }
1327                 }
1328         }
1329
1330         if (! $mention) {
1331                 return false;
1332         }
1333
1334         /// @TODO Combines both return statements into one
1335         return (($community_page) || ($prvgroup));
1336 }
1337
1338 /*
1339   This function returns true if $update has an edited timestamp newer
1340   than $existing, i.e. $update contains new data which should override
1341   what's already there.  If there is no timestamp yet, the update is
1342   assumed to be newer.  If the update has no timestamp, the existing
1343   item is assumed to be up-to-date.  If the timestamps are equal it
1344   assumes the update has been seen before and should be ignored.
1345   */
1346 function edited_timestamp_is_newer($existing, $update) {
1347         if (!x($existing,'edited') || !$existing['edited']) {
1348                 return true;
1349         }
1350         if (!x($update,'edited') || !$update['edited']) {
1351                 return false;
1352         }
1353
1354         $existing_edited = datetime_convert('UTC', 'UTC', $existing['edited']);
1355         $update_edited = datetime_convert('UTC', 'UTC', $update['edited']);
1356         return (strcmp($existing_edited, $update_edited) < 0);
1357 }
1358
1359 /**
1360  *
1361  * consume_feed - process atom feed and update anything/everything we might need to update
1362  *
1363  * $xml = the (atom) feed to consume - RSS isn't as fully supported but may work for simple feeds.
1364  *
1365  * $importer = the contact_record (joined to user_record) of the local user who owns this relationship.
1366  *             It is this person's stuff that is going to be updated.
1367  * $contact =  the person who is sending us stuff. If not set, we MAY be processing a "follow" activity
1368  *             from an external network and MAY create an appropriate contact record. Otherwise, we MUST
1369  *             have a contact record.
1370  * $hub = should we find a hub declation in the feed, pass it back to our calling process, who might (or
1371  *        might not) try and subscribe to it.
1372  * $datedir sorts in reverse order
1373  * $pass - by default ($pass = 0) we cannot guarantee that a parent item has been
1374  *      imported prior to its children being seen in the stream unless we are certain
1375  *      of how the feed is arranged/ordered.
1376  * With $pass = 1, we only pull parent items out of the stream.
1377  * With $pass = 2, we only pull children (comments/likes).
1378  *
1379  * So running this twice, first with pass 1 and then with pass 2 will do the right
1380  * thing regardless of feed ordering. This won't be adequate in a fully-threaded
1381  * model where comments can have sub-threads. That would require some massive sorting
1382  * to get all the feed items into a mostly linear ordering, and might still require
1383  * recursion.
1384  */
1385
1386 function consume_feed($xml,$importer,&$contact, &$hub, $datedir = 0, $pass = 0) {
1387         if ($contact['network'] === NETWORK_OSTATUS) {
1388                 if ($pass < 2) {
1389                         // Test - remove before flight
1390                         //$tempfile = tempnam(get_temppath(), "ostatus2");
1391                         //file_put_contents($tempfile, $xml);
1392                         logger("Consume OStatus messages ", LOGGER_DEBUG);
1393                         ostatus::import($xml,$importer,$contact, $hub);
1394                 }
1395                 return;
1396         }
1397
1398         if ($contact['network'] === NETWORK_FEED) {
1399                 if ($pass < 2) {
1400                         logger("Consume feeds", LOGGER_DEBUG);
1401                         feed_import($xml,$importer,$contact, $hub);
1402                 }
1403                 return;
1404         }
1405
1406         if ($contact['network'] === NETWORK_DFRN) {
1407                 logger("Consume DFRN messages", LOGGER_DEBUG);
1408
1409                 $r = q("SELECT  `contact`.*, `contact`.`uid` AS `importer_uid`,
1410                                         `contact`.`pubkey` AS `cpubkey`,
1411                                         `contact`.`prvkey` AS `cprvkey`,
1412                                         `contact`.`thumb` AS `thumb`,
1413                                         `contact`.`url` as `url`,
1414                                         `contact`.`name` as `senderName`,
1415                                         `user`.*
1416                         FROM `contact`
1417                         LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
1418                         WHERE `contact`.`id` = %d AND `user`.`uid` = %d",
1419                         dbesc($contact["id"]), dbesc($importer["uid"])
1420                 );
1421                 if ($r) {
1422                         logger("Now import the DFRN feed");
1423                         dfrn::import($xml,$r[0], true);
1424                         return;
1425                 }
1426         }
1427 }
1428
1429 function item_is_remote_self($contact, &$datarray) {
1430         $a = get_app();
1431
1432         if (!$contact['remote_self'])
1433                 return false;
1434
1435         // Prevent the forwarding of posts that are forwarded
1436         if ($datarray["extid"] == NETWORK_DFRN)
1437                 return false;
1438
1439         // Prevent to forward already forwarded posts
1440         if ($datarray["app"] == $a->get_hostname())
1441                 return false;
1442
1443         // Only forward posts
1444         if ($datarray["verb"] != ACTIVITY_POST)
1445                 return false;
1446
1447         if (($contact['network'] != NETWORK_FEED) AND $datarray['private'])
1448                 return false;
1449
1450         $datarray2 = $datarray;
1451         logger('remote-self start - Contact '.$contact['url'].' - '.$contact['remote_self'].' Item '.print_r($datarray, true), LOGGER_DEBUG);
1452         if ($contact['remote_self'] == 2) {
1453                 $r = q("SELECT `id`,`url`,`name`,`thumb` FROM `contact` WHERE `uid` = %d AND `self`",
1454                         intval($contact['uid']));
1455                 if (dbm::is_result($r)) {
1456                         $datarray['contact-id'] = $r[0]["id"];
1457
1458                         $datarray['owner-name'] = $r[0]["name"];
1459                         $datarray['owner-link'] = $r[0]["url"];
1460                         $datarray['owner-avatar'] = $r[0]["thumb"];
1461
1462                         $datarray['author-name']   = $datarray['owner-name'];
1463                         $datarray['author-link']   = $datarray['owner-link'];
1464                         $datarray['author-avatar'] = $datarray['owner-avatar'];
1465                 }
1466
1467                 if ($contact['network'] != NETWORK_FEED) {
1468                         $datarray["guid"] = get_guid(32);
1469                         unset($datarray["plink"]);
1470                         $datarray["uri"] = item_new_uri($a->get_hostname(),$contact['uid'], $datarray["guid"]);
1471                         $datarray["parent-uri"] = $datarray["uri"];
1472                         $datarray["extid"] = $contact['network'];
1473                         $urlpart = parse_url($datarray2['author-link']);
1474                         $datarray["app"] = $urlpart["host"];
1475                 } else
1476                         $datarray['private'] = 0;
1477         }
1478
1479         if ($contact['network'] != NETWORK_FEED) {
1480                 // Store the original post
1481                 $r = item_store($datarray2, false, false);
1482                 logger('remote-self post original item - Contact '.$contact['url'].' return '.$r.' Item '.print_r($datarray2, true), LOGGER_DEBUG);
1483         } else
1484                 $datarray["app"] = "Feed";
1485
1486         return true;
1487 }
1488
1489 function new_follower($importer,$contact,$datarray,$item,$sharing = false) {
1490         $url = notags(trim($datarray['author-link']));
1491         $name = notags(trim($datarray['author-name']));
1492         $photo = notags(trim($datarray['author-avatar']));
1493
1494         if (is_object($item)) {
1495                 $rawtag = $item->get_item_tags(NAMESPACE_ACTIVITY,'actor');
1496                 if ($rawtag && $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'])
1497                         $nick = $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'];
1498         } else
1499                 $nick = $item;
1500
1501         if (is_array($contact)) {
1502                 if (($contact['network'] == NETWORK_OSTATUS && $contact['rel'] == CONTACT_IS_SHARING)
1503                         || ($sharing && $contact['rel'] == CONTACT_IS_FOLLOWER)) {
1504                         $r = q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
1505                                 intval(CONTACT_IS_FRIEND),
1506                                 intval($contact['id']),
1507                                 intval($importer['uid'])
1508                         );
1509                 }
1510                 // send email notification to owner?
1511         } else {
1512
1513                 // create contact record
1514
1515                 $r = q("INSERT INTO `contact` (`uid`, `created`, `url`, `nurl`, `name`, `nick`, `photo`, `network`, `rel`,
1516                         `blocked`, `readonly`, `pending`, `writable`)
1517                         VALUES (%d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 1, 1)",
1518                         intval($importer['uid']),
1519                         dbesc(datetime_convert()),
1520                         dbesc($url),
1521                         dbesc(normalise_link($url)),
1522                         dbesc($name),
1523                         dbesc($nick),
1524                         dbesc($photo),
1525                         dbesc(($sharing) ? NETWORK_ZOT : NETWORK_OSTATUS),
1526                         intval(($sharing) ? CONTACT_IS_SHARING : CONTACT_IS_FOLLOWER)
1527                 );
1528                 $r = q("SELECT `id`, `network` FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `pending` = 1 LIMIT 1",
1529                                 intval($importer['uid']),
1530                                 dbesc($url)
1531                 );
1532                 if (dbm::is_result($r)) {
1533                         $contact_record = $r[0];
1534                         update_contact_avatar($photo, $importer["uid"], $contact_record["id"], true);
1535                 }
1536
1537
1538                 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
1539                         intval($importer['uid'])
1540                 );
1541                 $a = get_app();
1542
1543                 if (dbm::is_result($r) AND !in_array($r[0]['page-flags'], array(PAGE_SOAPBOX, PAGE_FREELOVE))) {
1544
1545                         // create notification
1546                         $hash = random_string();
1547
1548                         if (is_array($contact_record)) {
1549                                 $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `hash`, `datetime`)
1550                                         VALUES ( %d, %d, 0, 0, '%s', '%s' )",
1551                                         intval($importer['uid']),
1552                                         intval($contact_record['id']),
1553                                         dbesc($hash),
1554                                         dbesc(datetime_convert())
1555                                 );
1556                         }
1557
1558                         $def_gid = get_default_group($importer['uid'], $contact_record["network"]);
1559
1560                         if (intval($def_gid))
1561                                 group_add_member($importer['uid'],'',$contact_record['id'],$def_gid);
1562
1563                         if (($r[0]['notify-flags'] & NOTIFY_INTRO) &&
1564                                 in_array($r[0]['page-flags'], array(PAGE_NORMAL))) {
1565
1566                                 notification(array(
1567                                         'type'         => NOTIFY_INTRO,
1568                                         'notify_flags' => $r[0]['notify-flags'],
1569                                         'language'     => $r[0]['language'],
1570                                         'to_name'      => $r[0]['username'],
1571                                         'to_email'     => $r[0]['email'],
1572                                         'uid'          => $r[0]['uid'],
1573                                         'link'             => App::get_baseurl() . '/notifications/intro',
1574                                         'source_name'  => ((strlen(stripslashes($contact_record['name']))) ? stripslashes($contact_record['name']) : t('[Name Withheld]')),
1575                                         'source_link'  => $contact_record['url'],
1576                                         'source_photo' => $contact_record['photo'],
1577                                         'verb'         => ($sharing ? ACTIVITY_FRIEND : ACTIVITY_FOLLOW),
1578                                         'otype'        => 'intro'
1579                                 ));
1580
1581                         }
1582                 } elseif (dbm::is_result($r) AND in_array($r[0]['page-flags'], array(PAGE_SOAPBOX, PAGE_FREELOVE))) {
1583                         $r = q("UPDATE `contact` SET `pending` = 0 WHERE `uid` = %d AND `url` = '%s' AND `pending` LIMIT 1",
1584                                         intval($importer['uid']),
1585                                         dbesc($url)
1586                         );
1587                 }
1588
1589         }
1590 }
1591
1592 function lose_follower($importer,$contact,$datarray = array(),$item = "") {
1593
1594         if (($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_SHARING)) {
1595                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d",
1596                         intval(CONTACT_IS_SHARING),
1597                         intval($contact['id'])
1598                 );
1599         } else {
1600                 contact_remove($contact['id']);
1601         }
1602 }
1603
1604 function lose_sharer($importer,$contact,$datarray = array(),$item = "") {
1605
1606         if (($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_FOLLOWER)) {
1607                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d",
1608                         intval(CONTACT_IS_FOLLOWER),
1609                         intval($contact['id'])
1610                 );
1611         } else {
1612                 contact_remove($contact['id']);
1613         }
1614 }
1615
1616 function subscribe_to_hub($url,$importer,$contact,$hubmode = 'subscribe') {
1617
1618         $a = get_app();
1619
1620         if (is_array($importer)) {
1621                 $r = q("SELECT `nickname` FROM `user` WHERE `uid` = %d LIMIT 1",
1622                         intval($importer['uid'])
1623                 );
1624         }
1625
1626         // Diaspora has different message-ids in feeds than they do
1627         // through the direct Diaspora protocol. If we try and use
1628         // the feed, we'll get duplicates. So don't.
1629
1630         if ((! dbm::is_result($r)) || $contact['network'] === NETWORK_DIASPORA)
1631                 return;
1632
1633         $push_url = get_config('system','url') . '/pubsub/' . $r[0]['nickname'] . '/' . $contact['id'];
1634
1635         // Use a single verify token, even if multiple hubs
1636
1637         $verify_token = ((strlen($contact['hub-verify'])) ? $contact['hub-verify'] : random_string());
1638
1639         $params= 'hub.mode=' . $hubmode . '&hub.callback=' . urlencode($push_url) . '&hub.topic=' . urlencode($contact['poll']) . '&hub.verify=async&hub.verify_token=' . $verify_token;
1640
1641         logger('subscribe_to_hub: ' . $hubmode . ' ' . $contact['name'] . ' to hub ' . $url . ' endpoint: '  . $push_url . ' with verifier ' . $verify_token);
1642
1643         if (!strlen($contact['hub-verify']) OR ($contact['hub-verify'] != $verify_token)) {
1644                 $r = q("UPDATE `contact` SET `hub-verify` = '%s' WHERE `id` = %d",
1645                         dbesc($verify_token),
1646                         intval($contact['id'])
1647                 );
1648         }
1649
1650         post_url($url,$params);
1651
1652         logger('subscribe_to_hub: returns: ' . $a->get_curl_code(), LOGGER_DEBUG);
1653
1654         return;
1655
1656 }
1657
1658 function fix_private_photos($s, $uid, $item = null, $cid = 0) {
1659
1660         if (get_config('system','disable_embedded'))
1661                 return $s;
1662
1663         $a = get_app();
1664
1665         logger('fix_private_photos: check for photos', LOGGER_DEBUG);
1666         $site = substr(App::get_baseurl(),strpos(App::get_baseurl(),'://'));
1667
1668         $orig_body = $s;
1669         $new_body = '';
1670
1671         $img_start = strpos($orig_body, '[img');
1672         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
1673         $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
1674         while( ($img_st_close !== false) && ($img_len !== false) ) {
1675
1676                 $img_st_close++; // make it point to AFTER the closing bracket
1677                 $image = substr($orig_body, $img_start + $img_st_close, $img_len);
1678
1679                 logger('fix_private_photos: found photo ' . $image, LOGGER_DEBUG);
1680
1681
1682                 if (stristr($image , $site . '/photo/')) {
1683                         // Only embed locally hosted photos
1684                         $replace = false;
1685                         $i = basename($image);
1686                         $i = str_replace(array('.jpg','.png','.gif'),array('','',''),$i);
1687                         $x = strpos($i,'-');
1688
1689                         if ($x) {
1690                                 $res = substr($i,$x+1);
1691                                 $i = substr($i,0,$x);
1692                                 $r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d AND `uid` = %d",
1693                                         dbesc($i),
1694                                         intval($res),
1695                                         intval($uid)
1696                                 );
1697                                 if ($r) {
1698
1699                                         // Check to see if we should replace this photo link with an embedded image
1700                                         // 1. No need to do so if the photo is public
1701                                         // 2. If there's a contact-id provided, see if they're in the access list
1702                                         //    for the photo. If so, embed it.
1703                                         // 3. Otherwise, if we have an item, see if the item permissions match the photo
1704                                         //    permissions, regardless of order but first check to see if they're an exact
1705                                         //    match to save some processing overhead.
1706
1707                                         if (has_permissions($r[0])) {
1708                                                 if ($cid) {
1709                                                         $recips = enumerate_permissions($r[0]);
1710                                                         if (in_array($cid, $recips)) {
1711                                                                 $replace = true;
1712                                                         }
1713                                                 } elseif ($item) {
1714                                                         if (compare_permissions($item,$r[0]))
1715                                                                 $replace = true;
1716                                                 }
1717                                         }
1718                                         if ($replace) {
1719                                                 $data = $r[0]['data'];
1720                                                 $type = $r[0]['type'];
1721
1722                                                 // If a custom width and height were specified, apply before embedding
1723                                                 if (preg_match("/\[img\=([0-9]*)x([0-9]*)\]/is", substr($orig_body, $img_start, $img_st_close), $match)) {
1724                                                         logger('fix_private_photos: scaling photo', LOGGER_DEBUG);
1725
1726                                                         $width = intval($match[1]);
1727                                                         $height = intval($match[2]);
1728
1729                                                         $ph = new Photo($data, $type);
1730                                                         if ($ph->is_valid()) {
1731                                                                 $ph->scaleImage(max($width, $height));
1732                                                                 $data = $ph->imageString();
1733                                                                 $type = $ph->getType();
1734                                                         }
1735                                                 }
1736
1737                                                 logger('fix_private_photos: replacing photo', LOGGER_DEBUG);
1738                                                 $image = 'data:' . $type . ';base64,' . base64_encode($data);
1739                                                 logger('fix_private_photos: replaced: ' . $image, LOGGER_DATA);
1740                                         }
1741                                 }
1742                         }
1743                 }
1744
1745                 $new_body = $new_body . substr($orig_body, 0, $img_start + $img_st_close) . $image . '[/img]';
1746                 $orig_body = substr($orig_body, $img_start + $img_st_close + $img_len + strlen('[/img]'));
1747                 if ($orig_body === false)
1748                         $orig_body = '';
1749
1750                 $img_start = strpos($orig_body, '[img');
1751                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
1752                 $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
1753         }
1754
1755         $new_body = $new_body . $orig_body;
1756
1757         return($new_body);
1758 }
1759
1760 function has_permissions($obj) {
1761         if (($obj['allow_cid'] != '') || ($obj['allow_gid'] != '') || ($obj['deny_cid'] != '') || ($obj['deny_gid'] != ''))
1762                 return true;
1763         return false;
1764 }
1765
1766 function compare_permissions($obj1,$obj2) {
1767         // first part is easy. Check that these are exactly the same.
1768         if (($obj1['allow_cid'] == $obj2['allow_cid'])
1769                 && ($obj1['allow_gid'] == $obj2['allow_gid'])
1770                 && ($obj1['deny_cid'] == $obj2['deny_cid'])
1771                 && ($obj1['deny_gid'] == $obj2['deny_gid']))
1772                 return true;
1773
1774         // This is harder. Parse all the permissions and compare the resulting set.
1775
1776         $recipients1 = enumerate_permissions($obj1);
1777         $recipients2 = enumerate_permissions($obj2);
1778         sort($recipients1);
1779         sort($recipients2);
1780         if ($recipients1 == $recipients2)
1781                 return true;
1782         return false;
1783 }
1784
1785 // returns an array of contact-ids that are allowed to see this object
1786
1787 function enumerate_permissions($obj) {
1788         $allow_people = expand_acl($obj['allow_cid']);
1789         $allow_groups = expand_groups(expand_acl($obj['allow_gid']));
1790         $deny_people  = expand_acl($obj['deny_cid']);
1791         $deny_groups  = expand_groups(expand_acl($obj['deny_gid']));
1792         $recipients   = array_unique(array_merge($allow_people,$allow_groups));
1793         $deny         = array_unique(array_merge($deny_people,$deny_groups));
1794         $recipients   = array_diff($recipients,$deny);
1795         return $recipients;
1796 }
1797
1798 function item_getfeedtags($item) {
1799         $ret = array();
1800         $matches = false;
1801         $cnt = preg_match_all('|\#\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
1802         if ($cnt) {
1803                 for($x = 0; $x < $cnt; $x ++) {
1804                         if ($matches[1][$x])
1805                                 $ret[$matches[2][$x]] = array('#',$matches[1][$x], $matches[2][$x]);
1806                 }
1807         }
1808         $matches = false;
1809         $cnt = preg_match_all('|\@\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
1810         if ($cnt) {
1811                 for($x = 0; $x < $cnt; $x ++) {
1812                         if ($matches[1][$x])
1813                                 $ret[] = array('@',$matches[1][$x], $matches[2][$x]);
1814                 }
1815         }
1816         return $ret;
1817 }
1818
1819 function item_expire($uid, $days, $network = "", $force = false) {
1820
1821         if ((! $uid) || ($days < 1))
1822                 return;
1823
1824         // $expire_network_only = save your own wall posts
1825         // and just expire conversations started by others
1826
1827         $expire_network_only = get_pconfig($uid,'expire','network_only');
1828         $sql_extra = ((intval($expire_network_only)) ? " AND wall = 0 " : "");
1829
1830         if ($network != "") {
1831                 $sql_extra .= sprintf(" AND network = '%s' ", dbesc($network));
1832                 // There is an index "uid_network_received" but not "uid_network_created"
1833                 // This avoids the creation of another index just for one purpose.
1834                 // And it doesn't really matter wether to look at "received" or "created"
1835                 $range = "AND `received` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
1836         } else
1837                 $range = "AND `created` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
1838
1839         $r = q("SELECT `file`, `resource-id`, `starred`, `type`, `id` FROM `item`
1840                 WHERE `uid` = %d $range
1841                 AND `id` = `parent`
1842                 $sql_extra
1843                 AND `deleted` = 0",
1844                 intval($uid),
1845                 intval($days)
1846         );
1847
1848         if (! dbm::is_result($r))
1849                 return;
1850
1851         $expire_items = get_pconfig($uid, 'expire','items');
1852         $expire_items = (($expire_items===false)?1:intval($expire_items)); // default if not set: 1
1853
1854         // Forcing expiring of items - but not notes and marked items
1855         if ($force)
1856                 $expire_items = true;
1857
1858         $expire_notes = get_pconfig($uid, 'expire','notes');
1859         $expire_notes = (($expire_notes===false)?1:intval($expire_notes)); // default if not set: 1
1860
1861         $expire_starred = get_pconfig($uid, 'expire','starred');
1862         $expire_starred = (($expire_starred===false)?1:intval($expire_starred)); // default if not set: 1
1863
1864         $expire_photos = get_pconfig($uid, 'expire','photos');
1865         $expire_photos = (($expire_photos===false)?0:intval($expire_photos)); // default if not set: 0
1866
1867         logger('expire: # items=' . count($r). "; expire items: $expire_items, expire notes: $expire_notes, expire starred: $expire_starred, expire photos: $expire_photos");
1868
1869         foreach($r as $item) {
1870
1871                 // don't expire filed items
1872
1873                 if (strpos($item['file'],'[') !== false)
1874                         continue;
1875
1876                 // Only expire posts, not photos and photo comments
1877
1878                 if ($expire_photos==0 && strlen($item['resource-id']))
1879                         continue;
1880                 if ($expire_starred==0 && intval($item['starred']))
1881                         continue;
1882                 if ($expire_notes==0 && $item['type']=='note')
1883                         continue;
1884                 if ($expire_items==0 && $item['type']!='note')
1885                         continue;
1886
1887                 drop_item($item['id'],false);
1888         }
1889
1890         proc_run(PRIORITY_HIGH,"include/notifier.php", "expire", $uid);
1891
1892 }
1893
1894
1895 function drop_items($items) {
1896         $uid = 0;
1897
1898         if (! local_user() && ! remote_user())
1899                 return;
1900
1901         if (count($items)) {
1902                 foreach($items as $item) {
1903                         $owner = drop_item($item,false);
1904                         if ($owner && ! $uid)
1905                                 $uid = $owner;
1906                 }
1907         }
1908
1909         // multiple threads may have been deleted, send an expire notification
1910
1911         if ($uid)
1912                 proc_run(PRIORITY_HIGH,"include/notifier.php", "expire", $uid);
1913 }
1914
1915
1916 function drop_item($id,$interactive = true) {
1917
1918         $a = get_app();
1919
1920         // locate item to be deleted
1921
1922         $r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1",
1923                 intval($id)
1924         );
1925
1926         if (! dbm::is_result($r)) {
1927                 if (! $interactive)
1928                         return 0;
1929                 notice( t('Item not found.') . EOL);
1930                 goaway(App::get_baseurl() . '/' . $_SESSION['return_url']);
1931         }
1932
1933         $item = $r[0];
1934
1935         $owner = $item['uid'];
1936
1937         $contact_id = 0;
1938
1939         // check if logged in user is either the author or owner of this item
1940
1941         if (is_array($_SESSION['remote'])) {
1942                 foreach($_SESSION['remote'] as $visitor) {
1943                         if ($visitor['uid'] == $item['uid'] && $visitor['cid'] == $item['contact-id']) {
1944                                 $contact_id = $visitor['cid'];
1945                                 break;
1946                         }
1947                 }
1948         }
1949
1950
1951         if ((local_user() == $item['uid']) || ($contact_id) || (! $interactive)) {
1952
1953                 // Check if we should do HTML-based delete confirmation
1954                 if ($_REQUEST['confirm']) {
1955                         // <form> can't take arguments in its "action" parameter
1956                         // so add any arguments as hidden inputs
1957                         $query = explode_querystring($a->query_string);
1958                         $inputs = array();
1959                         foreach($query['args'] as $arg) {
1960                                 if (strpos($arg, 'confirm=') === false) {
1961                                         $arg_parts = explode('=', $arg);
1962                                         $inputs[] = array('name' => $arg_parts[0], 'value' => $arg_parts[1]);
1963                                 }
1964                         }
1965
1966                         return replace_macros(get_markup_template('confirm.tpl'), array(
1967                                 '$method' => 'get',
1968                                 '$message' => t('Do you really want to delete this item?'),
1969                                 '$extra_inputs' => $inputs,
1970                                 '$confirm' => t('Yes'),
1971                                 '$confirm_url' => $query['base'],
1972                                 '$confirm_name' => 'confirmed',
1973                                 '$cancel' => t('Cancel'),
1974                         ));
1975                 }
1976                 // Now check how the user responded to the confirmation query
1977                 if ($_REQUEST['canceled']) {
1978                         goaway(App::get_baseurl() . '/' . $_SESSION['return_url']);
1979                 }
1980
1981                 logger('delete item: ' . $item['id'], LOGGER_DEBUG);
1982                 // delete the item
1983
1984                 $r = q("UPDATE `item` SET `deleted` = 1, `title` = '', `body` = '', `edited` = '%s', `changed` = '%s' WHERE `id` = %d",
1985                         dbesc(datetime_convert()),
1986                         dbesc(datetime_convert()),
1987                         intval($item['id'])
1988                 );
1989                 create_tags_from_item($item['id']);
1990                 create_files_from_item($item['id']);
1991                 delete_thread($item['id'], $item['parent-uri']);
1992
1993                 // clean up categories and tags so they don't end up as orphans
1994
1995                 $matches = false;
1996                 $cnt = preg_match_all('/<(.*?)>/',$item['file'],$matches,PREG_SET_ORDER);
1997                 if ($cnt) {
1998                         foreach($matches as $mtch) {
1999                                 file_tag_unsave_file($item['uid'],$item['id'],$mtch[1],true);
2000                         }
2001                 }
2002
2003                 $matches = false;
2004
2005                 $cnt = preg_match_all('/\[(.*?)\]/',$item['file'],$matches,PREG_SET_ORDER);
2006                 if ($cnt) {
2007                         foreach($matches as $mtch) {
2008                                 file_tag_unsave_file($item['uid'],$item['id'],$mtch[1],false);
2009                         }
2010                 }
2011
2012                 // If item is a link to a photo resource, nuke all the associated photos
2013                 // (visitors will not have photo resources)
2014                 // This only applies to photos uploaded from the photos page. Photos inserted into a post do not
2015                 // generate a resource-id and therefore aren't intimately linked to the item.
2016
2017                 if (strlen($item['resource-id'])) {
2018                         q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `uid` = %d ",
2019                                 dbesc($item['resource-id']),
2020                                 intval($item['uid'])
2021                         );
2022                         // ignore the result
2023                 }
2024
2025                 // If item is a link to an event, nuke the event record.
2026
2027                 if (intval($item['event-id'])) {
2028                         q("DELETE FROM `event` WHERE `id` = %d AND `uid` = %d",
2029                                 intval($item['event-id']),
2030                                 intval($item['uid'])
2031                         );
2032                         // ignore the result
2033                 }
2034
2035                 // If item has attachments, drop them
2036
2037                 foreach(explode(",",$item['attach']) as $attach){
2038                         preg_match("|attach/(\d+)|", $attach, $matches);
2039                         q("DELETE FROM `attach` WHERE `id` = %d AND `uid` = %d",
2040                                 intval($matches[1]),
2041                                 local_user()
2042                         );
2043                         // ignore the result
2044                 }
2045
2046
2047                 // clean up item_id and sign meta-data tables
2048
2049                 /*
2050                 // Old code - caused very long queries and warning entries in the mysql logfiles:
2051
2052                 $r = q("DELETE FROM item_id where iid in (select id from item where parent = %d and uid = %d)",
2053                         intval($item['id']),
2054                         intval($item['uid'])
2055                 );
2056
2057                 $r = q("DELETE FROM sign where iid in (select id from item where parent = %d and uid = %d)",
2058                         intval($item['id']),
2059                         intval($item['uid'])
2060                 );
2061                 */
2062
2063                 // The new code splits the queries since the mysql optimizer really has bad problems with subqueries
2064
2065                 // Creating list of parents
2066                 $r = q("select id from item where parent = %d and uid = %d",
2067                         intval($item['id']),
2068                         intval($item['uid'])
2069                 );
2070
2071                 $parentid = "";
2072
2073                 foreach ($r AS $row) {
2074                         if ($parentid != "")
2075                                 $parentid .= ", ";
2076
2077                         $parentid .= $row["id"];
2078                 }
2079
2080                 // Now delete them
2081                 if ($parentid != "") {
2082                         $r = q("DELETE FROM item_id where iid in (%s)", dbesc($parentid));
2083
2084                         $r = q("DELETE FROM sign where iid in (%s)", dbesc($parentid));
2085                 }
2086
2087                 // If it's the parent of a comment thread, kill all the kids
2088
2089                 if ($item['uri'] == $item['parent-uri']) {
2090                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '' , `title` = ''
2091                                 WHERE `parent-uri` = '%s' AND `uid` = %d ",
2092                                 dbesc(datetime_convert()),
2093                                 dbesc(datetime_convert()),
2094                                 dbesc($item['parent-uri']),
2095                                 intval($item['uid'])
2096                         );
2097                         create_tags_from_itemuri($item['parent-uri'], $item['uid']);
2098                         create_files_from_itemuri($item['parent-uri'], $item['uid']);
2099                         delete_thread_uri($item['parent-uri'], $item['uid']);
2100                         // ignore the result
2101                 } else {
2102                         // ensure that last-child is set in case the comment that had it just got wiped.
2103                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
2104                                 dbesc(datetime_convert()),
2105                                 dbesc($item['parent-uri']),
2106                                 intval($item['uid'])
2107                         );
2108                         // who is the last child now?
2109                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d ORDER BY `edited` DESC LIMIT 1",
2110                                 dbesc($item['parent-uri']),
2111                                 intval($item['uid'])
2112                         );
2113                         if (dbm::is_result($r)) {
2114                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
2115                                         intval($r[0]['id'])
2116                                 );
2117                         }
2118                 }
2119
2120                 $drop_id = intval($item['id']);
2121
2122                 // send the notification upstream/downstream as the case may be
2123
2124                 proc_run(PRIORITY_HIGH,"include/notifier.php", "drop", $drop_id);
2125
2126                 if (! $interactive)
2127                         return $owner;
2128                 goaway(App::get_baseurl() . '/' . $_SESSION['return_url']);
2129                 //NOTREACHED
2130         } else {
2131                 if (! $interactive)
2132                         return 0;
2133                 notice( t('Permission denied.') . EOL);
2134                 goaway(App::get_baseurl() . '/' . $_SESSION['return_url']);
2135                 //NOTREACHED
2136         }
2137
2138 }
2139
2140
2141 function first_post_date($uid,$wall = false) {
2142         $r = q("select id, created from item
2143                 where uid = %d and wall = %d and deleted = 0 and visible = 1 AND moderated = 0
2144                 and id = parent
2145                 order by created asc limit 1",
2146                 intval($uid),
2147                 intval($wall ? 1 : 0)
2148         );
2149         if (dbm::is_result($r)) {
2150 //              logger('first_post_date: ' . $r[0]['id'] . ' ' . $r[0]['created'], LOGGER_DATA);
2151                 return substr(datetime_convert('',date_default_timezone_get(),$r[0]['created']),0,10);
2152         }
2153         return false;
2154 }
2155
2156 /* modified posted_dates() {below} to arrange the list in years */
2157 function list_post_dates($uid, $wall) {
2158         $dnow = datetime_convert('',date_default_timezone_get(),'now','Y-m-d');
2159
2160         $dthen = first_post_date($uid, $wall);
2161         if (! $dthen)
2162                 return array();
2163
2164         // Set the start and end date to the beginning of the month
2165         $dnow = substr($dnow,0,8).'01';
2166         $dthen = substr($dthen,0,8).'01';
2167
2168         $ret = array();
2169
2170         // Starting with the current month, get the first and last days of every
2171         // month down to and including the month of the first post
2172         while(substr($dnow, 0, 7) >= substr($dthen, 0, 7)) {
2173                 $dyear = intval(substr($dnow,0,4));
2174                 $dstart = substr($dnow,0,8) . '01';
2175                 $dend = substr($dnow,0,8) . get_dim(intval($dnow),intval(substr($dnow,5)));
2176                 $start_month = datetime_convert('','',$dstart,'Y-m-d');
2177                 $end_month = datetime_convert('','',$dend,'Y-m-d');
2178                 $str = day_translate(datetime_convert('','',$dnow,'F'));
2179                 if (! $ret[$dyear])
2180                         $ret[$dyear] = array();
2181                 $ret[$dyear][] = array($str,$end_month,$start_month);
2182                 $dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
2183         }
2184         return $ret;
2185 }
2186
2187 function posted_dates($uid,$wall) {
2188         $dnow = datetime_convert('',date_default_timezone_get(),'now','Y-m-d');
2189
2190         $dthen = first_post_date($uid,$wall);
2191         if (! $dthen)
2192                 return array();
2193
2194         // Set the start and end date to the beginning of the month
2195         $dnow = substr($dnow,0,8).'01';
2196         $dthen = substr($dthen,0,8).'01';
2197
2198         $ret = array();
2199         // Starting with the current month, get the first and last days of every
2200         // month down to and including the month of the first post
2201         while(substr($dnow, 0, 7) >= substr($dthen, 0, 7)) {
2202                 $dstart = substr($dnow,0,8) . '01';
2203                 $dend = substr($dnow,0,8) . get_dim(intval($dnow),intval(substr($dnow,5)));
2204                 $start_month = datetime_convert('','',$dstart,'Y-m-d');
2205                 $end_month = datetime_convert('','',$dend,'Y-m-d');
2206                 $str = day_translate(datetime_convert('','',$dnow,'F Y'));
2207                 $ret[] = array($str,$end_month,$start_month);
2208                 $dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
2209         }
2210         return $ret;
2211 }
2212
2213
2214 function posted_date_widget($url,$uid,$wall) {
2215         $o = '';
2216
2217         if (! feature_enabled($uid,'archives'))
2218                 return $o;
2219
2220         // For former Facebook folks that left because of "timeline"
2221
2222 /*      if ($wall && intval(get_pconfig($uid,'system','no_wall_archive_widget')))
2223                 return $o;*/
2224
2225         $visible_years = get_pconfig($uid,'system','archive_visible_years');
2226         if (! $visible_years)
2227                 $visible_years = 5;
2228
2229         $ret = list_post_dates($uid,$wall);
2230
2231         if (! count($ret))
2232                 return $o;
2233
2234         $cutoff_year = intval(datetime_convert('',date_default_timezone_get(),'now','Y')) - $visible_years;
2235         $cutoff = ((array_key_exists($cutoff_year,$ret))? true : false);
2236
2237         $o = replace_macros(get_markup_template('posted_date_widget.tpl'),array(
2238                 '$title' => t('Archives'),
2239                 '$size' => $visible_years,
2240                 '$cutoff_year' => $cutoff_year,
2241                 '$cutoff' => $cutoff,
2242                 '$url' => $url,
2243                 '$dates' => $ret,
2244                 '$showmore' => t('show more')
2245
2246         ));
2247         return $o;
2248 }