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 (dbm::is_result($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 ((dbm::is_result($r)) && (count($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
1192         if (! dbm::is_result($u)) {
1193                 return;
1194         }
1195
1196         $community_page = (($u[0]['page-flags'] == PAGE_COMMUNITY) ? true : false);
1197         $prvgroup = (($u[0]['page-flags'] == PAGE_PRVGROUP) ? true : false);
1198
1199
1200         $i = q("SELECT * FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
1201                 intval($item_id),
1202                 intval($uid)
1203         );
1204         if (! dbm::is_result($i)) {
1205                 return;
1206         }
1207
1208         $item = $i[0];
1209
1210         $link = normalise_link(App::get_baseurl() . '/profile/' . $u[0]['nickname']);
1211
1212         // Diaspora uses their own hardwired link URL in @-tags
1213         // instead of the one we supply with webfinger
1214
1215         $dlink = normalise_link(App::get_baseurl() . '/u/' . $u[0]['nickname']);
1216
1217         $cnt = preg_match_all('/[\@\!]\[url\=(.*?)\](.*?)\[\/url\]/ism',$item['body'],$matches,PREG_SET_ORDER);
1218         if ($cnt) {
1219                 foreach($matches as $mtch) {
1220                         if (link_compare($link,$mtch[1]) || link_compare($dlink,$mtch[1])) {
1221                                 $mention = true;
1222                                 logger('tag_deliver: mention found: ' . $mtch[2]);
1223                         }
1224                 }
1225         }
1226
1227         if (! $mention){
1228                 if ( ($community_page || $prvgroup) &&
1229                           (!$item['wall']) && (!$item['origin']) && ($item['id'] == $item['parent'])){
1230                         // mmh.. no mention.. community page or private group... no wall.. no origin.. top-post (not a comment)
1231                         // delete it!
1232                         logger("tag_deliver: no-mention top-level post to communuty or private group. delete.");
1233                         q("DELETE FROM item WHERE id = %d and uid = %d",
1234                                 intval($item_id),
1235                                 intval($uid)
1236                         );
1237                         return true;
1238                 }
1239                 return;
1240         }
1241
1242         $arr = array('item' => $item, 'user' => $u[0], 'contact' => $r[0]);
1243
1244         call_hooks('tagged', $arr);
1245
1246         if ((! $community_page) && (! $prvgroup))
1247                 return;
1248
1249
1250         // tgroup delivery - setup a second delivery chain
1251         // prevent delivery looping - only proceed
1252         // if the message originated elsewhere and is a top-level post
1253
1254         if (($item['wall']) || ($item['origin']) || ($item['id'] != $item['parent']))
1255                 return;
1256
1257         // now change this copy of the post to a forum head message and deliver to all the tgroup members
1258
1259
1260         $c = q("select name, url, thumb from contact where self = 1 and uid = %d limit 1",
1261                 intval($u[0]['uid'])
1262         );
1263         if (! dbm::is_result($c)) {
1264                 return;
1265         }
1266
1267         // also reset all the privacy bits to the forum default permissions
1268
1269         $private = ($u[0]['allow_cid'] || $u[0]['allow_gid'] || $u[0]['deny_cid'] || $u[0]['deny_gid']) ? 1 : 0;
1270
1271         $forum_mode = (($prvgroup) ? 2 : 1);
1272
1273         q("UPDATE `item` SET `wall` = 1, `origin` = 1, `forum_mode` = %d, `owner-name` = '%s', `owner-link` = '%s', `owner-avatar` = '%s',
1274                 `private` = %d, `allow_cid` = '%s', `allow_gid` = '%s', `deny_cid` = '%s', `deny_gid` = '%s'  WHERE `id` = %d",
1275                 intval($forum_mode),
1276                 dbesc($c[0]['name']),
1277                 dbesc($c[0]['url']),
1278                 dbesc($c[0]['thumb']),
1279                 intval($private),
1280                 dbesc($u[0]['allow_cid']),
1281                 dbesc($u[0]['allow_gid']),
1282                 dbesc($u[0]['deny_cid']),
1283                 dbesc($u[0]['deny_gid']),
1284                 intval($item_id)
1285         );
1286         update_thread($item_id);
1287
1288         proc_run(PRIORITY_HIGH,'include/notifier.php', 'tgroup', $item_id);
1289
1290 }
1291
1292
1293
1294 function tgroup_check($uid,$item) {
1295
1296         $mention = false;
1297
1298         // check that the message originated elsewhere and is a top-level post
1299
1300         if (($item['wall']) || ($item['origin']) || ($item['uri'] != $item['parent-uri']))
1301                 return false;
1302
1303         /// @TODO Encapsulate this or find it encapsulated and replace all occurrances
1304         $u = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
1305                 intval($uid)
1306         );
1307         if (! dbm::is_result($u)) {
1308                 return false;
1309         }
1310
1311         $community_page = (($u[0]['page-flags'] == PAGE_COMMUNITY) ? true : false);
1312         $prvgroup = (($u[0]['page-flags'] == PAGE_PRVGROUP) ? true : false);
1313
1314
1315         $link = normalise_link(App::get_baseurl() . '/profile/' . $u[0]['nickname']);
1316
1317         // Diaspora uses their own hardwired link URL in @-tags
1318         // instead of the one we supply with webfinger
1319
1320         $dlink = normalise_link(App::get_baseurl() . '/u/' . $u[0]['nickname']);
1321
1322         $cnt = preg_match_all('/[\@\!]\[url\=(.*?)\](.*?)\[\/url\]/ism',$item['body'],$matches,PREG_SET_ORDER);
1323         if ($cnt) {
1324                 foreach ($matches as $mtch) {
1325                         if (link_compare($link,$mtch[1]) || link_compare($dlink,$mtch[1])) {
1326                                 $mention = true;
1327                                 logger('tgroup_check: mention found: ' . $mtch[2]);
1328                         }
1329                 }
1330         }
1331
1332         if (! $mention) {
1333                 return false;
1334         }
1335
1336         /// @TODO Combines both return statements into one
1337         return (($community_page) || ($prvgroup));
1338 }
1339
1340 /*
1341   This function returns true if $update has an edited timestamp newer
1342   than $existing, i.e. $update contains new data which should override
1343   what's already there.  If there is no timestamp yet, the update is
1344   assumed to be newer.  If the update has no timestamp, the existing
1345   item is assumed to be up-to-date.  If the timestamps are equal it
1346   assumes the update has been seen before and should be ignored.
1347   */
1348 function edited_timestamp_is_newer($existing, $update) {
1349         if (!x($existing,'edited') || !$existing['edited']) {
1350                 return true;
1351         }
1352         if (!x($update,'edited') || !$update['edited']) {
1353                 return false;
1354         }
1355
1356         $existing_edited = datetime_convert('UTC', 'UTC', $existing['edited']);
1357         $update_edited = datetime_convert('UTC', 'UTC', $update['edited']);
1358         return (strcmp($existing_edited, $update_edited) < 0);
1359 }
1360
1361 /**
1362  *
1363  * consume_feed - process atom feed and update anything/everything we might need to update
1364  *
1365  * $xml = the (atom) feed to consume - RSS isn't as fully supported but may work for simple feeds.
1366  *
1367  * $importer = the contact_record (joined to user_record) of the local user who owns this relationship.
1368  *             It is this person's stuff that is going to be updated.
1369  * $contact =  the person who is sending us stuff. If not set, we MAY be processing a "follow" activity
1370  *             from an external network and MAY create an appropriate contact record. Otherwise, we MUST
1371  *             have a contact record.
1372  * $hub = should we find a hub declation in the feed, pass it back to our calling process, who might (or
1373  *        might not) try and subscribe to it.
1374  * $datedir sorts in reverse order
1375  * $pass - by default ($pass = 0) we cannot guarantee that a parent item has been
1376  *      imported prior to its children being seen in the stream unless we are certain
1377  *      of how the feed is arranged/ordered.
1378  * With $pass = 1, we only pull parent items out of the stream.
1379  * With $pass = 2, we only pull children (comments/likes).
1380  *
1381  * So running this twice, first with pass 1 and then with pass 2 will do the right
1382  * thing regardless of feed ordering. This won't be adequate in a fully-threaded
1383  * model where comments can have sub-threads. That would require some massive sorting
1384  * to get all the feed items into a mostly linear ordering, and might still require
1385  * recursion.
1386  */
1387
1388 function consume_feed($xml,$importer,&$contact, &$hub, $datedir = 0, $pass = 0) {
1389         if ($contact['network'] === NETWORK_OSTATUS) {
1390                 if ($pass < 2) {
1391                         // Test - remove before flight
1392                         //$tempfile = tempnam(get_temppath(), "ostatus2");
1393                         //file_put_contents($tempfile, $xml);
1394                         logger("Consume OStatus messages ", LOGGER_DEBUG);
1395                         ostatus::import($xml,$importer,$contact, $hub);
1396                 }
1397                 return;
1398         }
1399
1400         if ($contact['network'] === NETWORK_FEED) {
1401                 if ($pass < 2) {
1402                         logger("Consume feeds", LOGGER_DEBUG);
1403                         feed_import($xml,$importer,$contact, $hub);
1404                 }
1405                 return;
1406         }
1407
1408         if ($contact['network'] === NETWORK_DFRN) {
1409                 logger("Consume DFRN messages", LOGGER_DEBUG);
1410
1411                 $r = q("SELECT  `contact`.*, `contact`.`uid` AS `importer_uid`,
1412                                         `contact`.`pubkey` AS `cpubkey`,
1413                                         `contact`.`prvkey` AS `cprvkey`,
1414                                         `contact`.`thumb` AS `thumb`,
1415                                         `contact`.`url` as `url`,
1416                                         `contact`.`name` as `senderName`,
1417                                         `user`.*
1418                         FROM `contact`
1419                         LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
1420                         WHERE `contact`.`id` = %d AND `user`.`uid` = %d",
1421                         dbesc($contact["id"]), dbesc($importer["uid"])
1422                 );
1423                 if ($r) {
1424                         logger("Now import the DFRN feed");
1425                         dfrn::import($xml,$r[0], true);
1426                         return;
1427                 }
1428         }
1429 }
1430
1431 function item_is_remote_self($contact, &$datarray) {
1432         $a = get_app();
1433
1434         if (!$contact['remote_self'])
1435                 return false;
1436
1437         // Prevent the forwarding of posts that are forwarded
1438         if ($datarray["extid"] == NETWORK_DFRN)
1439                 return false;
1440
1441         // Prevent to forward already forwarded posts
1442         if ($datarray["app"] == $a->get_hostname())
1443                 return false;
1444
1445         // Only forward posts
1446         if ($datarray["verb"] != ACTIVITY_POST)
1447                 return false;
1448
1449         if (($contact['network'] != NETWORK_FEED) AND $datarray['private'])
1450                 return false;
1451
1452         $datarray2 = $datarray;
1453         logger('remote-self start - Contact '.$contact['url'].' - '.$contact['remote_self'].' Item '.print_r($datarray, true), LOGGER_DEBUG);
1454         if ($contact['remote_self'] == 2) {
1455                 $r = q("SELECT `id`,`url`,`name`,`thumb` FROM `contact` WHERE `uid` = %d AND `self`",
1456                         intval($contact['uid']));
1457                 if (dbm::is_result($r)) {
1458                         $datarray['contact-id'] = $r[0]["id"];
1459
1460                         $datarray['owner-name'] = $r[0]["name"];
1461                         $datarray['owner-link'] = $r[0]["url"];
1462                         $datarray['owner-avatar'] = $r[0]["thumb"];
1463
1464                         $datarray['author-name']   = $datarray['owner-name'];
1465                         $datarray['author-link']   = $datarray['owner-link'];
1466                         $datarray['author-avatar'] = $datarray['owner-avatar'];
1467                 }
1468
1469                 if ($contact['network'] != NETWORK_FEED) {
1470                         $datarray["guid"] = get_guid(32);
1471                         unset($datarray["plink"]);
1472                         $datarray["uri"] = item_new_uri($a->get_hostname(),$contact['uid'], $datarray["guid"]);
1473                         $datarray["parent-uri"] = $datarray["uri"];
1474                         $datarray["extid"] = $contact['network'];
1475                         $urlpart = parse_url($datarray2['author-link']);
1476                         $datarray["app"] = $urlpart["host"];
1477                 } else
1478                         $datarray['private'] = 0;
1479         }
1480
1481         if ($contact['network'] != NETWORK_FEED) {
1482                 // Store the original post
1483                 $r = item_store($datarray2, false, false);
1484                 logger('remote-self post original item - Contact '.$contact['url'].' return '.$r.' Item '.print_r($datarray2, true), LOGGER_DEBUG);
1485         } else
1486                 $datarray["app"] = "Feed";
1487
1488         return true;
1489 }
1490
1491 function new_follower($importer,$contact,$datarray,$item,$sharing = false) {
1492         $url = notags(trim($datarray['author-link']));
1493         $name = notags(trim($datarray['author-name']));
1494         $photo = notags(trim($datarray['author-avatar']));
1495
1496         if (is_object($item)) {
1497                 $rawtag = $item->get_item_tags(NAMESPACE_ACTIVITY,'actor');
1498                 if ($rawtag && $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'])
1499                         $nick = $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'];
1500         } else
1501                 $nick = $item;
1502
1503         if (is_array($contact)) {
1504                 if (($contact['network'] == NETWORK_OSTATUS && $contact['rel'] == CONTACT_IS_SHARING)
1505                         || ($sharing && $contact['rel'] == CONTACT_IS_FOLLOWER)) {
1506                         $r = q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
1507                                 intval(CONTACT_IS_FRIEND),
1508                                 intval($contact['id']),
1509                                 intval($importer['uid'])
1510                         );
1511                 }
1512                 // send email notification to owner?
1513         } else {
1514
1515                 // create contact record
1516
1517                 $r = q("INSERT INTO `contact` (`uid`, `created`, `url`, `nurl`, `name`, `nick`, `photo`, `network`, `rel`,
1518                         `blocked`, `readonly`, `pending`, `writable`)
1519                         VALUES (%d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 1, 1)",
1520                         intval($importer['uid']),
1521                         dbesc(datetime_convert()),
1522                         dbesc($url),
1523                         dbesc(normalise_link($url)),
1524                         dbesc($name),
1525                         dbesc($nick),
1526                         dbesc($photo),
1527                         dbesc(($sharing) ? NETWORK_ZOT : NETWORK_OSTATUS),
1528                         intval(($sharing) ? CONTACT_IS_SHARING : CONTACT_IS_FOLLOWER)
1529                 );
1530                 $r = q("SELECT `id`, `network` FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `pending` = 1 LIMIT 1",
1531                                 intval($importer['uid']),
1532                                 dbesc($url)
1533                 );
1534                 if (dbm::is_result($r)) {
1535                         $contact_record = $r[0];
1536                         update_contact_avatar($photo, $importer["uid"], $contact_record["id"], true);
1537                 }
1538
1539
1540                 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
1541                         intval($importer['uid'])
1542                 );
1543                 $a = get_app();
1544
1545                 if (dbm::is_result($r) AND !in_array($r[0]['page-flags'], array(PAGE_SOAPBOX, PAGE_FREELOVE))) {
1546
1547                         // create notification
1548                         $hash = random_string();
1549
1550                         if (is_array($contact_record)) {
1551                                 $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `hash`, `datetime`)
1552                                         VALUES ( %d, %d, 0, 0, '%s', '%s' )",
1553                                         intval($importer['uid']),
1554                                         intval($contact_record['id']),
1555                                         dbesc($hash),
1556                                         dbesc(datetime_convert())
1557                                 );
1558                         }
1559
1560                         $def_gid = get_default_group($importer['uid'], $contact_record["network"]);
1561
1562                         if (intval($def_gid))
1563                                 group_add_member($importer['uid'],'',$contact_record['id'],$def_gid);
1564
1565                         if (($r[0]['notify-flags'] & NOTIFY_INTRO) &&
1566                                 in_array($r[0]['page-flags'], array(PAGE_NORMAL))) {
1567
1568                                 notification(array(
1569                                         'type'         => NOTIFY_INTRO,
1570                                         'notify_flags' => $r[0]['notify-flags'],
1571                                         'language'     => $r[0]['language'],
1572                                         'to_name'      => $r[0]['username'],
1573                                         'to_email'     => $r[0]['email'],
1574                                         'uid'          => $r[0]['uid'],
1575                                         'link'             => App::get_baseurl() . '/notifications/intro',
1576                                         'source_name'  => ((strlen(stripslashes($contact_record['name']))) ? stripslashes($contact_record['name']) : t('[Name Withheld]')),
1577                                         'source_link'  => $contact_record['url'],
1578                                         'source_photo' => $contact_record['photo'],
1579                                         'verb'         => ($sharing ? ACTIVITY_FRIEND : ACTIVITY_FOLLOW),
1580                                         'otype'        => 'intro'
1581                                 ));
1582
1583                         }
1584                 } elseif (dbm::is_result($r) AND in_array($r[0]['page-flags'], array(PAGE_SOAPBOX, PAGE_FREELOVE))) {
1585                         $r = q("UPDATE `contact` SET `pending` = 0 WHERE `uid` = %d AND `url` = '%s' AND `pending` LIMIT 1",
1586                                         intval($importer['uid']),
1587                                         dbesc($url)
1588                         );
1589                 }
1590
1591         }
1592 }
1593
1594 function lose_follower($importer,$contact,$datarray = array(),$item = "") {
1595
1596         if (($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_SHARING)) {
1597                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d",
1598                         intval(CONTACT_IS_SHARING),
1599                         intval($contact['id'])
1600                 );
1601         } else {
1602                 contact_remove($contact['id']);
1603         }
1604 }
1605
1606 function lose_sharer($importer,$contact,$datarray = array(),$item = "") {
1607
1608         if (($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_FOLLOWER)) {
1609                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d",
1610                         intval(CONTACT_IS_FOLLOWER),
1611                         intval($contact['id'])
1612                 );
1613         } else {
1614                 contact_remove($contact['id']);
1615         }
1616 }
1617
1618 function subscribe_to_hub($url,$importer,$contact,$hubmode = 'subscribe') {
1619
1620         $a = get_app();
1621
1622         if (is_array($importer)) {
1623                 $r = q("SELECT `nickname` FROM `user` WHERE `uid` = %d LIMIT 1",
1624                         intval($importer['uid'])
1625                 );
1626         }
1627
1628         // Diaspora has different message-ids in feeds than they do
1629         // through the direct Diaspora protocol. If we try and use
1630         // the feed, we'll get duplicates. So don't.
1631
1632         if ((! dbm::is_result($r)) || $contact['network'] === NETWORK_DIASPORA)
1633                 return;
1634
1635         $push_url = get_config('system','url') . '/pubsub/' . $r[0]['nickname'] . '/' . $contact['id'];
1636
1637         // Use a single verify token, even if multiple hubs
1638
1639         $verify_token = ((strlen($contact['hub-verify'])) ? $contact['hub-verify'] : random_string());
1640
1641         $params= 'hub.mode=' . $hubmode . '&hub.callback=' . urlencode($push_url) . '&hub.topic=' . urlencode($contact['poll']) . '&hub.verify=async&hub.verify_token=' . $verify_token;
1642
1643         logger('subscribe_to_hub: ' . $hubmode . ' ' . $contact['name'] . ' to hub ' . $url . ' endpoint: '  . $push_url . ' with verifier ' . $verify_token);
1644
1645         if (!strlen($contact['hub-verify']) OR ($contact['hub-verify'] != $verify_token)) {
1646                 $r = q("UPDATE `contact` SET `hub-verify` = '%s' WHERE `id` = %d",
1647                         dbesc($verify_token),
1648                         intval($contact['id'])
1649                 );
1650         }
1651
1652         post_url($url,$params);
1653
1654         logger('subscribe_to_hub: returns: ' . $a->get_curl_code(), LOGGER_DEBUG);
1655
1656         return;
1657
1658 }
1659
1660 function fix_private_photos($s, $uid, $item = null, $cid = 0) {
1661
1662         if (get_config('system','disable_embedded'))
1663                 return $s;
1664
1665         $a = get_app();
1666
1667         logger('fix_private_photos: check for photos', LOGGER_DEBUG);
1668         $site = substr(App::get_baseurl(),strpos(App::get_baseurl(),'://'));
1669
1670         $orig_body = $s;
1671         $new_body = '';
1672
1673         $img_start = strpos($orig_body, '[img');
1674         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
1675         $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
1676         while( ($img_st_close !== false) && ($img_len !== false) ) {
1677
1678                 $img_st_close++; // make it point to AFTER the closing bracket
1679                 $image = substr($orig_body, $img_start + $img_st_close, $img_len);
1680
1681                 logger('fix_private_photos: found photo ' . $image, LOGGER_DEBUG);
1682
1683
1684                 if (stristr($image , $site . '/photo/')) {
1685                         // Only embed locally hosted photos
1686                         $replace = false;
1687                         $i = basename($image);
1688                         $i = str_replace(array('.jpg','.png','.gif'),array('','',''),$i);
1689                         $x = strpos($i,'-');
1690
1691                         if ($x) {
1692                                 $res = substr($i,$x+1);
1693                                 $i = substr($i,0,$x);
1694                                 $r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d AND `uid` = %d",
1695                                         dbesc($i),
1696                                         intval($res),
1697                                         intval($uid)
1698                                 );
1699                                 if ($r) {
1700
1701                                         // Check to see if we should replace this photo link with an embedded image
1702                                         // 1. No need to do so if the photo is public
1703                                         // 2. If there's a contact-id provided, see if they're in the access list
1704                                         //    for the photo. If so, embed it.
1705                                         // 3. Otherwise, if we have an item, see if the item permissions match the photo
1706                                         //    permissions, regardless of order but first check to see if they're an exact
1707                                         //    match to save some processing overhead.
1708
1709                                         if (has_permissions($r[0])) {
1710                                                 if ($cid) {
1711                                                         $recips = enumerate_permissions($r[0]);
1712                                                         if (in_array($cid, $recips)) {
1713                                                                 $replace = true;
1714                                                         }
1715                                                 } elseif ($item) {
1716                                                         if (compare_permissions($item,$r[0]))
1717                                                                 $replace = true;
1718                                                 }
1719                                         }
1720                                         if ($replace) {
1721                                                 $data = $r[0]['data'];
1722                                                 $type = $r[0]['type'];
1723
1724                                                 // If a custom width and height were specified, apply before embedding
1725                                                 if (preg_match("/\[img\=([0-9]*)x([0-9]*)\]/is", substr($orig_body, $img_start, $img_st_close), $match)) {
1726                                                         logger('fix_private_photos: scaling photo', LOGGER_DEBUG);
1727
1728                                                         $width = intval($match[1]);
1729                                                         $height = intval($match[2]);
1730
1731                                                         $ph = new Photo($data, $type);
1732                                                         if ($ph->is_valid()) {
1733                                                                 $ph->scaleImage(max($width, $height));
1734                                                                 $data = $ph->imageString();
1735                                                                 $type = $ph->getType();
1736                                                         }
1737                                                 }
1738
1739                                                 logger('fix_private_photos: replacing photo', LOGGER_DEBUG);
1740                                                 $image = 'data:' . $type . ';base64,' . base64_encode($data);
1741                                                 logger('fix_private_photos: replaced: ' . $image, LOGGER_DATA);
1742                                         }
1743                                 }
1744                         }
1745                 }
1746
1747                 $new_body = $new_body . substr($orig_body, 0, $img_start + $img_st_close) . $image . '[/img]';
1748                 $orig_body = substr($orig_body, $img_start + $img_st_close + $img_len + strlen('[/img]'));
1749                 if ($orig_body === false)
1750                         $orig_body = '';
1751
1752                 $img_start = strpos($orig_body, '[img');
1753                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
1754                 $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
1755         }
1756
1757         $new_body = $new_body . $orig_body;
1758
1759         return($new_body);
1760 }
1761
1762 function has_permissions($obj) {
1763         if (($obj['allow_cid'] != '') || ($obj['allow_gid'] != '') || ($obj['deny_cid'] != '') || ($obj['deny_gid'] != ''))
1764                 return true;
1765         return false;
1766 }
1767
1768 function compare_permissions($obj1,$obj2) {
1769         // first part is easy. Check that these are exactly the same.
1770         if (($obj1['allow_cid'] == $obj2['allow_cid'])
1771                 && ($obj1['allow_gid'] == $obj2['allow_gid'])
1772                 && ($obj1['deny_cid'] == $obj2['deny_cid'])
1773                 && ($obj1['deny_gid'] == $obj2['deny_gid']))
1774                 return true;
1775
1776         // This is harder. Parse all the permissions and compare the resulting set.
1777
1778         $recipients1 = enumerate_permissions($obj1);
1779         $recipients2 = enumerate_permissions($obj2);
1780         sort($recipients1);
1781         sort($recipients2);
1782         if ($recipients1 == $recipients2)
1783                 return true;
1784         return false;
1785 }
1786
1787 // returns an array of contact-ids that are allowed to see this object
1788
1789 function enumerate_permissions($obj) {
1790         $allow_people = expand_acl($obj['allow_cid']);
1791         $allow_groups = expand_groups(expand_acl($obj['allow_gid']));
1792         $deny_people  = expand_acl($obj['deny_cid']);
1793         $deny_groups  = expand_groups(expand_acl($obj['deny_gid']));
1794         $recipients   = array_unique(array_merge($allow_people,$allow_groups));
1795         $deny         = array_unique(array_merge($deny_people,$deny_groups));
1796         $recipients   = array_diff($recipients,$deny);
1797         return $recipients;
1798 }
1799
1800 function item_getfeedtags($item) {
1801         $ret = array();
1802         $matches = false;
1803         $cnt = preg_match_all('|\#\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
1804         if ($cnt) {
1805                 for($x = 0; $x < $cnt; $x ++) {
1806                         if ($matches[1][$x])
1807                                 $ret[$matches[2][$x]] = array('#',$matches[1][$x], $matches[2][$x]);
1808                 }
1809         }
1810         $matches = false;
1811         $cnt = preg_match_all('|\@\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
1812         if ($cnt) {
1813                 for($x = 0; $x < $cnt; $x ++) {
1814                         if ($matches[1][$x])
1815                                 $ret[] = array('@',$matches[1][$x], $matches[2][$x]);
1816                 }
1817         }
1818         return $ret;
1819 }
1820
1821 function item_expire($uid, $days, $network = "", $force = false) {
1822
1823         if ((! $uid) || ($days < 1))
1824                 return;
1825
1826         // $expire_network_only = save your own wall posts
1827         // and just expire conversations started by others
1828
1829         $expire_network_only = get_pconfig($uid,'expire','network_only');
1830         $sql_extra = ((intval($expire_network_only)) ? " AND wall = 0 " : "");
1831
1832         if ($network != "") {
1833                 $sql_extra .= sprintf(" AND network = '%s' ", dbesc($network));
1834                 // There is an index "uid_network_received" but not "uid_network_created"
1835                 // This avoids the creation of another index just for one purpose.
1836                 // And it doesn't really matter wether to look at "received" or "created"
1837                 $range = "AND `received` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
1838         } else
1839                 $range = "AND `created` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
1840
1841         $r = q("SELECT `file`, `resource-id`, `starred`, `type`, `id` FROM `item`
1842                 WHERE `uid` = %d $range
1843                 AND `id` = `parent`
1844                 $sql_extra
1845                 AND `deleted` = 0",
1846                 intval($uid),
1847                 intval($days)
1848         );
1849
1850         if (! dbm::is_result($r))
1851                 return;
1852
1853         $expire_items = get_pconfig($uid, 'expire','items');
1854         $expire_items = (($expire_items===false)?1:intval($expire_items)); // default if not set: 1
1855
1856         // Forcing expiring of items - but not notes and marked items
1857         if ($force)
1858                 $expire_items = true;
1859
1860         $expire_notes = get_pconfig($uid, 'expire','notes');
1861         $expire_notes = (($expire_notes===false)?1:intval($expire_notes)); // default if not set: 1
1862
1863         $expire_starred = get_pconfig($uid, 'expire','starred');
1864         $expire_starred = (($expire_starred===false)?1:intval($expire_starred)); // default if not set: 1
1865
1866         $expire_photos = get_pconfig($uid, 'expire','photos');
1867         $expire_photos = (($expire_photos===false)?0:intval($expire_photos)); // default if not set: 0
1868
1869         logger('expire: # items=' . count($r). "; expire items: $expire_items, expire notes: $expire_notes, expire starred: $expire_starred, expire photos: $expire_photos");
1870
1871         foreach($r as $item) {
1872
1873                 // don't expire filed items
1874
1875                 if (strpos($item['file'],'[') !== false)
1876                         continue;
1877
1878                 // Only expire posts, not photos and photo comments
1879
1880                 if ($expire_photos==0 && strlen($item['resource-id']))
1881                         continue;
1882                 if ($expire_starred==0 && intval($item['starred']))
1883                         continue;
1884                 if ($expire_notes==0 && $item['type']=='note')
1885                         continue;
1886                 if ($expire_items==0 && $item['type']!='note')
1887                         continue;
1888
1889                 drop_item($item['id'],false);
1890         }
1891
1892         proc_run(PRIORITY_HIGH,"include/notifier.php", "expire", $uid);
1893
1894 }
1895
1896
1897 function drop_items($items) {
1898         $uid = 0;
1899
1900         if (! local_user() && ! remote_user())
1901                 return;
1902
1903         if (count($items)) {
1904                 foreach($items as $item) {
1905                         $owner = drop_item($item,false);
1906                         if ($owner && ! $uid)
1907                                 $uid = $owner;
1908                 }
1909         }
1910
1911         // multiple threads may have been deleted, send an expire notification
1912
1913         if ($uid)
1914                 proc_run(PRIORITY_HIGH,"include/notifier.php", "expire", $uid);
1915 }
1916
1917
1918 function drop_item($id,$interactive = true) {
1919
1920         $a = get_app();
1921
1922         // locate item to be deleted
1923
1924         $r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1",
1925                 intval($id)
1926         );
1927
1928         if (! dbm::is_result($r)) {
1929                 if (! $interactive)
1930                         return 0;
1931                 notice( t('Item not found.') . EOL);
1932                 goaway(App::get_baseurl() . '/' . $_SESSION['return_url']);
1933         }
1934
1935         $item = $r[0];
1936
1937         $owner = $item['uid'];
1938
1939         $contact_id = 0;
1940
1941         // check if logged in user is either the author or owner of this item
1942
1943         if (is_array($_SESSION['remote'])) {
1944                 foreach($_SESSION['remote'] as $visitor) {
1945                         if ($visitor['uid'] == $item['uid'] && $visitor['cid'] == $item['contact-id']) {
1946                                 $contact_id = $visitor['cid'];
1947                                 break;
1948                         }
1949                 }
1950         }
1951
1952
1953         if ((local_user() == $item['uid']) || ($contact_id) || (! $interactive)) {
1954
1955                 // Check if we should do HTML-based delete confirmation
1956                 if ($_REQUEST['confirm']) {
1957                         // <form> can't take arguments in its "action" parameter
1958                         // so add any arguments as hidden inputs
1959                         $query = explode_querystring($a->query_string);
1960                         $inputs = array();
1961                         foreach($query['args'] as $arg) {
1962                                 if (strpos($arg, 'confirm=') === false) {
1963                                         $arg_parts = explode('=', $arg);
1964                                         $inputs[] = array('name' => $arg_parts[0], 'value' => $arg_parts[1]);
1965                                 }
1966                         }
1967
1968                         return replace_macros(get_markup_template('confirm.tpl'), array(
1969                                 '$method' => 'get',
1970                                 '$message' => t('Do you really want to delete this item?'),
1971                                 '$extra_inputs' => $inputs,
1972                                 '$confirm' => t('Yes'),
1973                                 '$confirm_url' => $query['base'],
1974                                 '$confirm_name' => 'confirmed',
1975                                 '$cancel' => t('Cancel'),
1976                         ));
1977                 }
1978                 // Now check how the user responded to the confirmation query
1979                 if ($_REQUEST['canceled']) {
1980                         goaway(App::get_baseurl() . '/' . $_SESSION['return_url']);
1981                 }
1982
1983                 logger('delete item: ' . $item['id'], LOGGER_DEBUG);
1984                 // delete the item
1985
1986                 $r = q("UPDATE `item` SET `deleted` = 1, `title` = '', `body` = '', `edited` = '%s', `changed` = '%s' WHERE `id` = %d",
1987                         dbesc(datetime_convert()),
1988                         dbesc(datetime_convert()),
1989                         intval($item['id'])
1990                 );
1991                 create_tags_from_item($item['id']);
1992                 create_files_from_item($item['id']);
1993                 delete_thread($item['id'], $item['parent-uri']);
1994
1995                 // clean up categories and tags so they don't end up as orphans
1996
1997                 $matches = false;
1998                 $cnt = preg_match_all('/<(.*?)>/',$item['file'],$matches,PREG_SET_ORDER);
1999                 if ($cnt) {
2000                         foreach($matches as $mtch) {
2001                                 file_tag_unsave_file($item['uid'],$item['id'],$mtch[1],true);
2002                         }
2003                 }
2004
2005                 $matches = false;
2006
2007                 $cnt = preg_match_all('/\[(.*?)\]/',$item['file'],$matches,PREG_SET_ORDER);
2008                 if ($cnt) {
2009                         foreach($matches as $mtch) {
2010                                 file_tag_unsave_file($item['uid'],$item['id'],$mtch[1],false);
2011                         }
2012                 }
2013
2014                 // If item is a link to a photo resource, nuke all the associated photos
2015                 // (visitors will not have photo resources)
2016                 // This only applies to photos uploaded from the photos page. Photos inserted into a post do not
2017                 // generate a resource-id and therefore aren't intimately linked to the item.
2018
2019                 if (strlen($item['resource-id'])) {
2020                         q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `uid` = %d ",
2021                                 dbesc($item['resource-id']),
2022                                 intval($item['uid'])
2023                         );
2024                         // ignore the result
2025                 }
2026
2027                 // If item is a link to an event, nuke the event record.
2028
2029                 if (intval($item['event-id'])) {
2030                         q("DELETE FROM `event` WHERE `id` = %d AND `uid` = %d",
2031                                 intval($item['event-id']),
2032                                 intval($item['uid'])
2033                         );
2034                         // ignore the result
2035                 }
2036
2037                 // If item has attachments, drop them
2038
2039                 foreach(explode(",",$item['attach']) as $attach){
2040                         preg_match("|attach/(\d+)|", $attach, $matches);
2041                         q("DELETE FROM `attach` WHERE `id` = %d AND `uid` = %d",
2042                                 intval($matches[1]),
2043                                 local_user()
2044                         );
2045                         // ignore the result
2046                 }
2047
2048
2049                 // clean up item_id and sign meta-data tables
2050
2051                 /*
2052                 // Old code - caused very long queries and warning entries in the mysql logfiles:
2053
2054                 $r = q("DELETE FROM item_id where iid in (select id from item where parent = %d and uid = %d)",
2055                         intval($item['id']),
2056                         intval($item['uid'])
2057                 );
2058
2059                 $r = q("DELETE FROM sign where iid in (select id from item where parent = %d and uid = %d)",
2060                         intval($item['id']),
2061                         intval($item['uid'])
2062                 );
2063                 */
2064
2065                 // The new code splits the queries since the mysql optimizer really has bad problems with subqueries
2066
2067                 // Creating list of parents
2068                 $r = q("select id from item where parent = %d and uid = %d",
2069                         intval($item['id']),
2070                         intval($item['uid'])
2071                 );
2072
2073                 $parentid = "";
2074
2075                 foreach ($r AS $row) {
2076                         if ($parentid != "")
2077                                 $parentid .= ", ";
2078
2079                         $parentid .= $row["id"];
2080                 }
2081
2082                 // Now delete them
2083                 if ($parentid != "") {
2084                         $r = q("DELETE FROM item_id where iid in (%s)", dbesc($parentid));
2085
2086                         $r = q("DELETE FROM sign where iid in (%s)", dbesc($parentid));
2087                 }
2088
2089                 // If it's the parent of a comment thread, kill all the kids
2090
2091                 if ($item['uri'] == $item['parent-uri']) {
2092                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '' , `title` = ''
2093                                 WHERE `parent-uri` = '%s' AND `uid` = %d ",
2094                                 dbesc(datetime_convert()),
2095                                 dbesc(datetime_convert()),
2096                                 dbesc($item['parent-uri']),
2097                                 intval($item['uid'])
2098                         );
2099                         create_tags_from_itemuri($item['parent-uri'], $item['uid']);
2100                         create_files_from_itemuri($item['parent-uri'], $item['uid']);
2101                         delete_thread_uri($item['parent-uri'], $item['uid']);
2102                         // ignore the result
2103                 } else {
2104                         // ensure that last-child is set in case the comment that had it just got wiped.
2105                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
2106                                 dbesc(datetime_convert()),
2107                                 dbesc($item['parent-uri']),
2108                                 intval($item['uid'])
2109                         );
2110                         // who is the last child now?
2111                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d ORDER BY `edited` DESC LIMIT 1",
2112                                 dbesc($item['parent-uri']),
2113                                 intval($item['uid'])
2114                         );
2115                         if (dbm::is_result($r)) {
2116                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
2117                                         intval($r[0]['id'])
2118                                 );
2119                         }
2120                 }
2121
2122                 $drop_id = intval($item['id']);
2123
2124                 // send the notification upstream/downstream as the case may be
2125
2126                 proc_run(PRIORITY_HIGH,"include/notifier.php", "drop", $drop_id);
2127
2128                 if (! $interactive)
2129                         return $owner;
2130                 goaway(App::get_baseurl() . '/' . $_SESSION['return_url']);
2131                 //NOTREACHED
2132         } else {
2133                 if (! $interactive)
2134                         return 0;
2135                 notice( t('Permission denied.') . EOL);
2136                 goaway(App::get_baseurl() . '/' . $_SESSION['return_url']);
2137                 //NOTREACHED
2138         }
2139
2140 }
2141
2142
2143 function first_post_date($uid,$wall = false) {
2144         $r = q("select id, created from item
2145                 where uid = %d and wall = %d and deleted = 0 and visible = 1 AND moderated = 0
2146                 and id = parent
2147                 order by created asc limit 1",
2148                 intval($uid),
2149                 intval($wall ? 1 : 0)
2150         );
2151         if (dbm::is_result($r)) {
2152 //              logger('first_post_date: ' . $r[0]['id'] . ' ' . $r[0]['created'], LOGGER_DATA);
2153                 return substr(datetime_convert('',date_default_timezone_get(),$r[0]['created']),0,10);
2154         }
2155         return false;
2156 }
2157
2158 /* modified posted_dates() {below} to arrange the list in years */
2159 function list_post_dates($uid, $wall) {
2160         $dnow = datetime_convert('',date_default_timezone_get(),'now','Y-m-d');
2161
2162         $dthen = first_post_date($uid, $wall);
2163         if (! $dthen)
2164                 return array();
2165
2166         // Set the start and end date to the beginning of the month
2167         $dnow = substr($dnow,0,8).'01';
2168         $dthen = substr($dthen,0,8).'01';
2169
2170         $ret = array();
2171
2172         // Starting with the current month, get the first and last days of every
2173         // month down to and including the month of the first post
2174         while(substr($dnow, 0, 7) >= substr($dthen, 0, 7)) {
2175                 $dyear = intval(substr($dnow,0,4));
2176                 $dstart = substr($dnow,0,8) . '01';
2177                 $dend = substr($dnow,0,8) . get_dim(intval($dnow),intval(substr($dnow,5)));
2178                 $start_month = datetime_convert('','',$dstart,'Y-m-d');
2179                 $end_month = datetime_convert('','',$dend,'Y-m-d');
2180                 $str = day_translate(datetime_convert('','',$dnow,'F'));
2181                 if (! $ret[$dyear])
2182                         $ret[$dyear] = array();
2183                 $ret[$dyear][] = array($str,$end_month,$start_month);
2184                 $dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
2185         }
2186         return $ret;
2187 }
2188
2189 function posted_dates($uid,$wall) {
2190         $dnow = datetime_convert('',date_default_timezone_get(),'now','Y-m-d');
2191
2192         $dthen = first_post_date($uid,$wall);
2193         if (! $dthen)
2194                 return array();
2195
2196         // Set the start and end date to the beginning of the month
2197         $dnow = substr($dnow,0,8).'01';
2198         $dthen = substr($dthen,0,8).'01';
2199
2200         $ret = array();
2201         // Starting with the current month, get the first and last days of every
2202         // month down to and including the month of the first post
2203         while(substr($dnow, 0, 7) >= substr($dthen, 0, 7)) {
2204                 $dstart = substr($dnow,0,8) . '01';
2205                 $dend = substr($dnow,0,8) . get_dim(intval($dnow),intval(substr($dnow,5)));
2206                 $start_month = datetime_convert('','',$dstart,'Y-m-d');
2207                 $end_month = datetime_convert('','',$dend,'Y-m-d');
2208                 $str = day_translate(datetime_convert('','',$dnow,'F Y'));
2209                 $ret[] = array($str,$end_month,$start_month);
2210                 $dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
2211         }
2212         return $ret;
2213 }
2214
2215
2216 function posted_date_widget($url,$uid,$wall) {
2217         $o = '';
2218
2219         if (! feature_enabled($uid,'archives'))
2220                 return $o;
2221
2222         // For former Facebook folks that left because of "timeline"
2223
2224 /*      if ($wall && intval(get_pconfig($uid,'system','no_wall_archive_widget')))
2225                 return $o;*/
2226
2227         $visible_years = get_pconfig($uid,'system','archive_visible_years');
2228         if (! $visible_years)
2229                 $visible_years = 5;
2230
2231         $ret = list_post_dates($uid,$wall);
2232
2233         if (! dbm::is_result($ret))
2234                 return $o;
2235
2236         $cutoff_year = intval(datetime_convert('',date_default_timezone_get(),'now','Y')) - $visible_years;
2237         $cutoff = ((array_key_exists($cutoff_year,$ret))? true : false);
2238
2239         $o = replace_macros(get_markup_template('posted_date_widget.tpl'),array(
2240                 '$title' => t('Archives'),
2241                 '$size' => $visible_years,
2242                 '$cutoff_year' => $cutoff_year,
2243                 '$cutoff' => $cutoff,
2244                 '$url' => $url,
2245                 '$dates' => $ret,
2246                 '$showmore' => t('show more')
2247
2248         ));
2249         return $o;
2250 }