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 (! count($c))
1264                 return;
1265
1266         // also reset all the privacy bits to the forum default permissions
1267
1268         $private = ($u[0]['allow_cid'] || $u[0]['allow_gid'] || $u[0]['deny_cid'] || $u[0]['deny_gid']) ? 1 : 0;
1269
1270         $forum_mode = (($prvgroup) ? 2 : 1);
1271
1272         q("update item set wall = 1, origin = 1, forum_mode = %d, `owner-name` = '%s', `owner-link` = '%s', `owner-avatar` = '%s',
1273                 `private` = %d, `allow_cid` = '%s', `allow_gid` = '%s', `deny_cid` = '%s', `deny_gid` = '%s'  where id = %d",
1274                 intval($forum_mode),
1275                 dbesc($c[0]['name']),
1276                 dbesc($c[0]['url']),
1277                 dbesc($c[0]['thumb']),
1278                 intval($private),
1279                 dbesc($u[0]['allow_cid']),
1280                 dbesc($u[0]['allow_gid']),
1281                 dbesc($u[0]['deny_cid']),
1282                 dbesc($u[0]['deny_gid']),
1283                 intval($item_id)
1284         );
1285         update_thread($item_id);
1286
1287         proc_run(PRIORITY_HIGH,'include/notifier.php', 'tgroup', $item_id);
1288
1289 }
1290
1291
1292
1293 function tgroup_check($uid,$item) {
1294
1295         $a = get_app();
1296
1297         $mention = false;
1298
1299         // check that the message originated elsewhere and is a top-level post
1300
1301         if (($item['wall']) || ($item['origin']) || ($item['uri'] != $item['parent-uri']))
1302                 return false;
1303
1304         /// @TODO Encapsulate this or find it encapsulated and replace all occurrances
1305         $u = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
1306                 intval($uid)
1307         );
1308         if (! dbm::is_result($u)) {
1309                 return false;
1310         }
1311
1312         $community_page = (($u[0]['page-flags'] == PAGE_COMMUNITY) ? true : false);
1313         $prvgroup = (($u[0]['page-flags'] == PAGE_PRVGROUP) ? true : false);
1314
1315
1316         $link = normalise_link(App::get_baseurl() . '/profile/' . $u[0]['nickname']);
1317
1318         // Diaspora uses their own hardwired link URL in @-tags
1319         // instead of the one we supply with webfinger
1320
1321         $dlink = normalise_link(App::get_baseurl() . '/u/' . $u[0]['nickname']);
1322
1323         $cnt = preg_match_all('/[\@\!]\[url\=(.*?)\](.*?)\[\/url\]/ism',$item['body'],$matches,PREG_SET_ORDER);
1324         if ($cnt) {
1325                 foreach($matches as $mtch) {
1326                         if (link_compare($link,$mtch[1]) || link_compare($dlink,$mtch[1])) {
1327                                 $mention = true;
1328                                 logger('tgroup_check: mention found: ' . $mtch[2]);
1329                         }
1330                 }
1331         }
1332
1333         if (! $mention)
1334                 return false;
1335
1336         if ((! $community_page) && (! $prvgroup))
1337                 return false;
1338
1339         return true;
1340 }
1341
1342 /*
1343   This function returns true if $update has an edited timestamp newer
1344   than $existing, i.e. $update contains new data which should override
1345   what's already there.  If there is no timestamp yet, the update is
1346   assumed to be newer.  If the update has no timestamp, the existing
1347   item is assumed to be up-to-date.  If the timestamps are equal it
1348   assumes the update has been seen before and should be ignored.
1349   */
1350 function edited_timestamp_is_newer($existing, $update) {
1351     if (!x($existing,'edited') || !$existing['edited']) {
1352         return true;
1353     }
1354     if (!x($update,'edited') || !$update['edited']) {
1355         return false;
1356     }
1357     $existing_edited = datetime_convert('UTC', 'UTC', $existing['edited']);
1358     $update_edited = datetime_convert('UTC', 'UTC', $update['edited']);
1359     return (strcmp($existing_edited, $update_edited) < 0);
1360 }
1361
1362 /**
1363  *
1364  * consume_feed - process atom feed and update anything/everything we might need to update
1365  *
1366  * $xml = the (atom) feed to consume - RSS isn't as fully supported but may work for simple feeds.
1367  *
1368  * $importer = the contact_record (joined to user_record) of the local user who owns this relationship.
1369  *             It is this person's stuff that is going to be updated.
1370  * $contact =  the person who is sending us stuff. If not set, we MAY be processing a "follow" activity
1371  *             from an external network and MAY create an appropriate contact record. Otherwise, we MUST
1372  *             have a contact record.
1373  * $hub = should we find a hub declation in the feed, pass it back to our calling process, who might (or
1374  *        might not) try and subscribe to it.
1375  * $datedir sorts in reverse order
1376  * $pass - by default ($pass = 0) we cannot guarantee that a parent item has been
1377  *      imported prior to its children being seen in the stream unless we are certain
1378  *      of how the feed is arranged/ordered.
1379  * With $pass = 1, we only pull parent items out of the stream.
1380  * With $pass = 2, we only pull children (comments/likes).
1381  *
1382  * So running this twice, first with pass 1 and then with pass 2 will do the right
1383  * thing regardless of feed ordering. This won't be adequate in a fully-threaded
1384  * model where comments can have sub-threads. That would require some massive sorting
1385  * to get all the feed items into a mostly linear ordering, and might still require
1386  * recursion.
1387  */
1388
1389 function consume_feed($xml,$importer,&$contact, &$hub, $datedir = 0, $pass = 0) {
1390         if ($contact['network'] === NETWORK_OSTATUS) {
1391                 if ($pass < 2) {
1392                         // Test - remove before flight
1393                         //$tempfile = tempnam(get_temppath(), "ostatus2");
1394                         //file_put_contents($tempfile, $xml);
1395                         logger("Consume OStatus messages ", LOGGER_DEBUG);
1396                         ostatus::import($xml,$importer,$contact, $hub);
1397                 }
1398                 return;
1399         }
1400
1401         if ($contact['network'] === NETWORK_FEED) {
1402                 if ($pass < 2) {
1403                         logger("Consume feeds", LOGGER_DEBUG);
1404                         feed_import($xml,$importer,$contact, $hub);
1405                 }
1406                 return;
1407         }
1408
1409         if ($contact['network'] === NETWORK_DFRN) {
1410                 logger("Consume DFRN messages", LOGGER_DEBUG);
1411
1412                 $r = q("SELECT  `contact`.*, `contact`.`uid` AS `importer_uid`,
1413                                         `contact`.`pubkey` AS `cpubkey`,
1414                                         `contact`.`prvkey` AS `cprvkey`,
1415                                         `contact`.`thumb` AS `thumb`,
1416                                         `contact`.`url` as `url`,
1417                                         `contact`.`name` as `senderName`,
1418                                         `user`.*
1419                         FROM `contact`
1420                         LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
1421                         WHERE `contact`.`id` = %d AND `user`.`uid` = %d",
1422                         dbesc($contact["id"]), dbesc($importer["uid"])
1423                 );
1424                 if ($r) {
1425                         logger("Now import the DFRN feed");
1426                         dfrn::import($xml,$r[0], true);
1427                         return;
1428                 }
1429         }
1430 }
1431
1432 function item_is_remote_self($contact, &$datarray) {
1433         $a = get_app();
1434
1435         if (!$contact['remote_self'])
1436                 return false;
1437
1438         // Prevent the forwarding of posts that are forwarded
1439         if ($datarray["extid"] == NETWORK_DFRN)
1440                 return false;
1441
1442         // Prevent to forward already forwarded posts
1443         if ($datarray["app"] == $a->get_hostname())
1444                 return false;
1445
1446         // Only forward posts
1447         if ($datarray["verb"] != ACTIVITY_POST)
1448                 return false;
1449
1450         if (($contact['network'] != NETWORK_FEED) AND $datarray['private'])
1451                 return false;
1452
1453         $datarray2 = $datarray;
1454         logger('remote-self start - Contact '.$contact['url'].' - '.$contact['remote_self'].' Item '.print_r($datarray, true), LOGGER_DEBUG);
1455         if ($contact['remote_self'] == 2) {
1456                 $r = q("SELECT `id`,`url`,`name`,`thumb` FROM `contact` WHERE `uid` = %d AND `self`",
1457                         intval($contact['uid']));
1458                 if (dbm::is_result($r)) {
1459                         $datarray['contact-id'] = $r[0]["id"];
1460
1461                         $datarray['owner-name'] = $r[0]["name"];
1462                         $datarray['owner-link'] = $r[0]["url"];
1463                         $datarray['owner-avatar'] = $r[0]["thumb"];
1464
1465                         $datarray['author-name']   = $datarray['owner-name'];
1466                         $datarray['author-link']   = $datarray['owner-link'];
1467                         $datarray['author-avatar'] = $datarray['owner-avatar'];
1468                 }
1469
1470                 if ($contact['network'] != NETWORK_FEED) {
1471                         $datarray["guid"] = get_guid(32);
1472                         unset($datarray["plink"]);
1473                         $datarray["uri"] = item_new_uri($a->get_hostname(),$contact['uid'], $datarray["guid"]);
1474                         $datarray["parent-uri"] = $datarray["uri"];
1475                         $datarray["extid"] = $contact['network'];
1476                         $urlpart = parse_url($datarray2['author-link']);
1477                         $datarray["app"] = $urlpart["host"];
1478                 } else
1479                         $datarray['private'] = 0;
1480         }
1481
1482         if ($contact['network'] != NETWORK_FEED) {
1483                 // Store the original post
1484                 $r = item_store($datarray2, false, false);
1485                 logger('remote-self post original item - Contact '.$contact['url'].' return '.$r.' Item '.print_r($datarray2, true), LOGGER_DEBUG);
1486         } else
1487                 $datarray["app"] = "Feed";
1488
1489         return true;
1490 }
1491
1492 function new_follower($importer,$contact,$datarray,$item,$sharing = false) {
1493         $url = notags(trim($datarray['author-link']));
1494         $name = notags(trim($datarray['author-name']));
1495         $photo = notags(trim($datarray['author-avatar']));
1496
1497         if (is_object($item)) {
1498                 $rawtag = $item->get_item_tags(NAMESPACE_ACTIVITY,'actor');
1499                 if ($rawtag && $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'])
1500                         $nick = $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'];
1501         } else
1502                 $nick = $item;
1503
1504         if (is_array($contact)) {
1505                 if (($contact['network'] == NETWORK_OSTATUS && $contact['rel'] == CONTACT_IS_SHARING)
1506                         || ($sharing && $contact['rel'] == CONTACT_IS_FOLLOWER)) {
1507                         $r = q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
1508                                 intval(CONTACT_IS_FRIEND),
1509                                 intval($contact['id']),
1510                                 intval($importer['uid'])
1511                         );
1512                 }
1513                 // send email notification to owner?
1514         } else {
1515
1516                 // create contact record
1517
1518                 $r = q("INSERT INTO `contact` (`uid`, `created`, `url`, `nurl`, `name`, `nick`, `photo`, `network`, `rel`,
1519                         `blocked`, `readonly`, `pending`, `writable`)
1520                         VALUES (%d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 1, 1)",
1521                         intval($importer['uid']),
1522                         dbesc(datetime_convert()),
1523                         dbesc($url),
1524                         dbesc(normalise_link($url)),
1525                         dbesc($name),
1526                         dbesc($nick),
1527                         dbesc($photo),
1528                         dbesc(($sharing) ? NETWORK_ZOT : NETWORK_OSTATUS),
1529                         intval(($sharing) ? CONTACT_IS_SHARING : CONTACT_IS_FOLLOWER)
1530                 );
1531                 $r = q("SELECT `id`, `network` FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `pending` = 1 LIMIT 1",
1532                                 intval($importer['uid']),
1533                                 dbesc($url)
1534                 );
1535                 if (dbm::is_result($r)) {
1536                         $contact_record = $r[0];
1537                         update_contact_avatar($photo, $importer["uid"], $contact_record["id"], true);
1538                 }
1539
1540
1541                 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
1542                         intval($importer['uid'])
1543                 );
1544                 $a = get_app();
1545
1546                 if (dbm::is_result($r) AND !in_array($r[0]['page-flags'], array(PAGE_SOAPBOX, PAGE_FREELOVE))) {
1547
1548                         // create notification
1549                         $hash = random_string();
1550
1551                         if (is_array($contact_record)) {
1552                                 $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `hash`, `datetime`)
1553                                         VALUES ( %d, %d, 0, 0, '%s', '%s' )",
1554                                         intval($importer['uid']),
1555                                         intval($contact_record['id']),
1556                                         dbesc($hash),
1557                                         dbesc(datetime_convert())
1558                                 );
1559                         }
1560
1561                         $def_gid = get_default_group($importer['uid'], $contact_record["network"]);
1562
1563                         if (intval($def_gid))
1564                                 group_add_member($importer['uid'],'',$contact_record['id'],$def_gid);
1565
1566                         if (($r[0]['notify-flags'] & NOTIFY_INTRO) &&
1567                                 in_array($r[0]['page-flags'], array(PAGE_NORMAL))) {
1568
1569                                 notification(array(
1570                                         'type'         => NOTIFY_INTRO,
1571                                         'notify_flags' => $r[0]['notify-flags'],
1572                                         'language'     => $r[0]['language'],
1573                                         'to_name'      => $r[0]['username'],
1574                                         'to_email'     => $r[0]['email'],
1575                                         'uid'          => $r[0]['uid'],
1576                                         'link'             => App::get_baseurl() . '/notifications/intro',
1577                                         'source_name'  => ((strlen(stripslashes($contact_record['name']))) ? stripslashes($contact_record['name']) : t('[Name Withheld]')),
1578                                         'source_link'  => $contact_record['url'],
1579                                         'source_photo' => $contact_record['photo'],
1580                                         'verb'         => ($sharing ? ACTIVITY_FRIEND : ACTIVITY_FOLLOW),
1581                                         'otype'        => 'intro'
1582                                 ));
1583
1584                         }
1585                 } elseif (dbm::is_result($r) AND in_array($r[0]['page-flags'], array(PAGE_SOAPBOX, PAGE_FREELOVE))) {
1586                         $r = q("UPDATE `contact` SET `pending` = 0 WHERE `uid` = %d AND `url` = '%s' AND `pending` LIMIT 1",
1587                                         intval($importer['uid']),
1588                                         dbesc($url)
1589                         );
1590                 }
1591
1592         }
1593 }
1594
1595 function lose_follower($importer,$contact,$datarray = array(),$item = "") {
1596
1597         if (($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_SHARING)) {
1598                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d",
1599                         intval(CONTACT_IS_SHARING),
1600                         intval($contact['id'])
1601                 );
1602         } else {
1603                 contact_remove($contact['id']);
1604         }
1605 }
1606
1607 function lose_sharer($importer,$contact,$datarray = array(),$item = "") {
1608
1609         if (($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_FOLLOWER)) {
1610                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d",
1611                         intval(CONTACT_IS_FOLLOWER),
1612                         intval($contact['id'])
1613                 );
1614         } else {
1615                 contact_remove($contact['id']);
1616         }
1617 }
1618
1619 function subscribe_to_hub($url,$importer,$contact,$hubmode = 'subscribe') {
1620
1621         $a = get_app();
1622
1623         if (is_array($importer)) {
1624                 $r = q("SELECT `nickname` FROM `user` WHERE `uid` = %d LIMIT 1",
1625                         intval($importer['uid'])
1626                 );
1627         }
1628
1629         // Diaspora has different message-ids in feeds than they do
1630         // through the direct Diaspora protocol. If we try and use
1631         // the feed, we'll get duplicates. So don't.
1632
1633         if ((! dbm::is_result($r)) || $contact['network'] === NETWORK_DIASPORA)
1634                 return;
1635
1636         $push_url = get_config('system','url') . '/pubsub/' . $r[0]['nickname'] . '/' . $contact['id'];
1637
1638         // Use a single verify token, even if multiple hubs
1639
1640         $verify_token = ((strlen($contact['hub-verify'])) ? $contact['hub-verify'] : random_string());
1641
1642         $params= 'hub.mode=' . $hubmode . '&hub.callback=' . urlencode($push_url) . '&hub.topic=' . urlencode($contact['poll']) . '&hub.verify=async&hub.verify_token=' . $verify_token;
1643
1644         logger('subscribe_to_hub: ' . $hubmode . ' ' . $contact['name'] . ' to hub ' . $url . ' endpoint: '  . $push_url . ' with verifier ' . $verify_token);
1645
1646         if (!strlen($contact['hub-verify']) OR ($contact['hub-verify'] != $verify_token)) {
1647                 $r = q("UPDATE `contact` SET `hub-verify` = '%s' WHERE `id` = %d",
1648                         dbesc($verify_token),
1649                         intval($contact['id'])
1650                 );
1651         }
1652
1653         post_url($url,$params);
1654
1655         logger('subscribe_to_hub: returns: ' . $a->get_curl_code(), LOGGER_DEBUG);
1656
1657         return;
1658
1659 }
1660
1661 function fix_private_photos($s, $uid, $item = null, $cid = 0) {
1662
1663         if (get_config('system','disable_embedded'))
1664                 return $s;
1665
1666         $a = get_app();
1667
1668         logger('fix_private_photos: check for photos', LOGGER_DEBUG);
1669         $site = substr(App::get_baseurl(),strpos(App::get_baseurl(),'://'));
1670
1671         $orig_body = $s;
1672         $new_body = '';
1673
1674         $img_start = strpos($orig_body, '[img');
1675         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
1676         $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
1677         while( ($img_st_close !== false) && ($img_len !== false) ) {
1678
1679                 $img_st_close++; // make it point to AFTER the closing bracket
1680                 $image = substr($orig_body, $img_start + $img_st_close, $img_len);
1681
1682                 logger('fix_private_photos: found photo ' . $image, LOGGER_DEBUG);
1683
1684
1685                 if (stristr($image , $site . '/photo/')) {
1686                         // Only embed locally hosted photos
1687                         $replace = false;
1688                         $i = basename($image);
1689                         $i = str_replace(array('.jpg','.png','.gif'),array('','',''),$i);
1690                         $x = strpos($i,'-');
1691
1692                         if ($x) {
1693                                 $res = substr($i,$x+1);
1694                                 $i = substr($i,0,$x);
1695                                 $r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d AND `uid` = %d",
1696                                         dbesc($i),
1697                                         intval($res),
1698                                         intval($uid)
1699                                 );
1700                                 if ($r) {
1701
1702                                         // Check to see if we should replace this photo link with an embedded image
1703                                         // 1. No need to do so if the photo is public
1704                                         // 2. If there's a contact-id provided, see if they're in the access list
1705                                         //    for the photo. If so, embed it.
1706                                         // 3. Otherwise, if we have an item, see if the item permissions match the photo
1707                                         //    permissions, regardless of order but first check to see if they're an exact
1708                                         //    match to save some processing overhead.
1709
1710                                         if (has_permissions($r[0])) {
1711                                                 if ($cid) {
1712                                                         $recips = enumerate_permissions($r[0]);
1713                                                         if (in_array($cid, $recips)) {
1714                                                                 $replace = true;
1715                                                         }
1716                                                 } elseif ($item) {
1717                                                         if (compare_permissions($item,$r[0]))
1718                                                                 $replace = true;
1719                                                 }
1720                                         }
1721                                         if ($replace) {
1722                                                 $data = $r[0]['data'];
1723                                                 $type = $r[0]['type'];
1724
1725                                                 // If a custom width and height were specified, apply before embedding
1726                                                 if (preg_match("/\[img\=([0-9]*)x([0-9]*)\]/is", substr($orig_body, $img_start, $img_st_close), $match)) {
1727                                                         logger('fix_private_photos: scaling photo', LOGGER_DEBUG);
1728
1729                                                         $width = intval($match[1]);
1730                                                         $height = intval($match[2]);
1731
1732                                                         $ph = new Photo($data, $type);
1733                                                         if ($ph->is_valid()) {
1734                                                                 $ph->scaleImage(max($width, $height));
1735                                                                 $data = $ph->imageString();
1736                                                                 $type = $ph->getType();
1737                                                         }
1738                                                 }
1739
1740                                                 logger('fix_private_photos: replacing photo', LOGGER_DEBUG);
1741                                                 $image = 'data:' . $type . ';base64,' . base64_encode($data);
1742                                                 logger('fix_private_photos: replaced: ' . $image, LOGGER_DATA);
1743                                         }
1744                                 }
1745                         }
1746                 }
1747
1748                 $new_body = $new_body . substr($orig_body, 0, $img_start + $img_st_close) . $image . '[/img]';
1749                 $orig_body = substr($orig_body, $img_start + $img_st_close + $img_len + strlen('[/img]'));
1750                 if ($orig_body === false)
1751                         $orig_body = '';
1752
1753                 $img_start = strpos($orig_body, '[img');
1754                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
1755                 $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
1756         }
1757
1758         $new_body = $new_body . $orig_body;
1759
1760         return($new_body);
1761 }
1762
1763 function has_permissions($obj) {
1764         if (($obj['allow_cid'] != '') || ($obj['allow_gid'] != '') || ($obj['deny_cid'] != '') || ($obj['deny_gid'] != ''))
1765                 return true;
1766         return false;
1767 }
1768
1769 function compare_permissions($obj1,$obj2) {
1770         // first part is easy. Check that these are exactly the same.
1771         if (($obj1['allow_cid'] == $obj2['allow_cid'])
1772                 && ($obj1['allow_gid'] == $obj2['allow_gid'])
1773                 && ($obj1['deny_cid'] == $obj2['deny_cid'])
1774                 && ($obj1['deny_gid'] == $obj2['deny_gid']))
1775                 return true;
1776
1777         // This is harder. Parse all the permissions and compare the resulting set.
1778
1779         $recipients1 = enumerate_permissions($obj1);
1780         $recipients2 = enumerate_permissions($obj2);
1781         sort($recipients1);
1782         sort($recipients2);
1783         if ($recipients1 == $recipients2)
1784                 return true;
1785         return false;
1786 }
1787
1788 // returns an array of contact-ids that are allowed to see this object
1789
1790 function enumerate_permissions($obj) {
1791         $allow_people = expand_acl($obj['allow_cid']);
1792         $allow_groups = expand_groups(expand_acl($obj['allow_gid']));
1793         $deny_people  = expand_acl($obj['deny_cid']);
1794         $deny_groups  = expand_groups(expand_acl($obj['deny_gid']));
1795         $recipients   = array_unique(array_merge($allow_people,$allow_groups));
1796         $deny         = array_unique(array_merge($deny_people,$deny_groups));
1797         $recipients   = array_diff($recipients,$deny);
1798         return $recipients;
1799 }
1800
1801 function item_getfeedtags($item) {
1802         $ret = array();
1803         $matches = false;
1804         $cnt = preg_match_all('|\#\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
1805         if ($cnt) {
1806                 for($x = 0; $x < $cnt; $x ++) {
1807                         if ($matches[1][$x])
1808                                 $ret[$matches[2][$x]] = array('#',$matches[1][$x], $matches[2][$x]);
1809                 }
1810         }
1811         $matches = false;
1812         $cnt = preg_match_all('|\@\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
1813         if ($cnt) {
1814                 for($x = 0; $x < $cnt; $x ++) {
1815                         if ($matches[1][$x])
1816                                 $ret[] = array('@',$matches[1][$x], $matches[2][$x]);
1817                 }
1818         }
1819         return $ret;
1820 }
1821
1822 function item_expire($uid, $days, $network = "", $force = false) {
1823
1824         if ((! $uid) || ($days < 1))
1825                 return;
1826
1827         // $expire_network_only = save your own wall posts
1828         // and just expire conversations started by others
1829
1830         $expire_network_only = get_pconfig($uid,'expire','network_only');
1831         $sql_extra = ((intval($expire_network_only)) ? " AND wall = 0 " : "");
1832
1833         if ($network != "") {
1834                 $sql_extra .= sprintf(" AND network = '%s' ", dbesc($network));
1835                 // There is an index "uid_network_received" but not "uid_network_created"
1836                 // This avoids the creation of another index just for one purpose.
1837                 // And it doesn't really matter wether to look at "received" or "created"
1838                 $range = "AND `received` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
1839         } else
1840                 $range = "AND `created` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
1841
1842         $r = q("SELECT `file`, `resource-id`, `starred`, `type`, `id` FROM `item`
1843                 WHERE `uid` = %d $range
1844                 AND `id` = `parent`
1845                 $sql_extra
1846                 AND `deleted` = 0",
1847                 intval($uid),
1848                 intval($days)
1849         );
1850
1851         if (! dbm::is_result($r))
1852                 return;
1853
1854         $expire_items = get_pconfig($uid, 'expire','items');
1855         $expire_items = (($expire_items===false)?1:intval($expire_items)); // default if not set: 1
1856
1857         // Forcing expiring of items - but not notes and marked items
1858         if ($force)
1859                 $expire_items = true;
1860
1861         $expire_notes = get_pconfig($uid, 'expire','notes');
1862         $expire_notes = (($expire_notes===false)?1:intval($expire_notes)); // default if not set: 1
1863
1864         $expire_starred = get_pconfig($uid, 'expire','starred');
1865         $expire_starred = (($expire_starred===false)?1:intval($expire_starred)); // default if not set: 1
1866
1867         $expire_photos = get_pconfig($uid, 'expire','photos');
1868         $expire_photos = (($expire_photos===false)?0:intval($expire_photos)); // default if not set: 0
1869
1870         logger('expire: # items=' . count($r). "; expire items: $expire_items, expire notes: $expire_notes, expire starred: $expire_starred, expire photos: $expire_photos");
1871
1872         foreach($r as $item) {
1873
1874                 // don't expire filed items
1875
1876                 if (strpos($item['file'],'[') !== false)
1877                         continue;
1878
1879                 // Only expire posts, not photos and photo comments
1880
1881                 if ($expire_photos==0 && strlen($item['resource-id']))
1882                         continue;
1883                 if ($expire_starred==0 && intval($item['starred']))
1884                         continue;
1885                 if ($expire_notes==0 && $item['type']=='note')
1886                         continue;
1887                 if ($expire_items==0 && $item['type']!='note')
1888                         continue;
1889
1890                 drop_item($item['id'],false);
1891         }
1892
1893         proc_run(PRIORITY_HIGH,"include/notifier.php", "expire", $uid);
1894
1895 }
1896
1897
1898 function drop_items($items) {
1899         $uid = 0;
1900
1901         if (! local_user() && ! remote_user())
1902                 return;
1903
1904         if (count($items)) {
1905                 foreach($items as $item) {
1906                         $owner = drop_item($item,false);
1907                         if ($owner && ! $uid)
1908                                 $uid = $owner;
1909                 }
1910         }
1911
1912         // multiple threads may have been deleted, send an expire notification
1913
1914         if ($uid)
1915                 proc_run(PRIORITY_HIGH,"include/notifier.php", "expire", $uid);
1916 }
1917
1918
1919 function drop_item($id,$interactive = true) {
1920
1921         $a = get_app();
1922
1923         // locate item to be deleted
1924
1925         $r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1",
1926                 intval($id)
1927         );
1928
1929         if (! dbm::is_result($r)) {
1930                 if (! $interactive)
1931                         return 0;
1932                 notice( t('Item not found.') . EOL);
1933                 goaway(App::get_baseurl() . '/' . $_SESSION['return_url']);
1934         }
1935
1936         $item = $r[0];
1937
1938         $owner = $item['uid'];
1939
1940         $contact_id = 0;
1941
1942         // check if logged in user is either the author or owner of this item
1943
1944         if (is_array($_SESSION['remote'])) {
1945                 foreach($_SESSION['remote'] as $visitor) {
1946                         if ($visitor['uid'] == $item['uid'] && $visitor['cid'] == $item['contact-id']) {
1947                                 $contact_id = $visitor['cid'];
1948                                 break;
1949                         }
1950                 }
1951         }
1952
1953
1954         if ((local_user() == $item['uid']) || ($contact_id) || (! $interactive)) {
1955
1956                 // Check if we should do HTML-based delete confirmation
1957                 if ($_REQUEST['confirm']) {
1958                         // <form> can't take arguments in its "action" parameter
1959                         // so add any arguments as hidden inputs
1960                         $query = explode_querystring($a->query_string);
1961                         $inputs = array();
1962                         foreach($query['args'] as $arg) {
1963                                 if (strpos($arg, 'confirm=') === false) {
1964                                         $arg_parts = explode('=', $arg);
1965                                         $inputs[] = array('name' => $arg_parts[0], 'value' => $arg_parts[1]);
1966                                 }
1967                         }
1968
1969                         return replace_macros(get_markup_template('confirm.tpl'), array(
1970                                 '$method' => 'get',
1971                                 '$message' => t('Do you really want to delete this item?'),
1972                                 '$extra_inputs' => $inputs,
1973                                 '$confirm' => t('Yes'),
1974                                 '$confirm_url' => $query['base'],
1975                                 '$confirm_name' => 'confirmed',
1976                                 '$cancel' => t('Cancel'),
1977                         ));
1978                 }
1979                 // Now check how the user responded to the confirmation query
1980                 if ($_REQUEST['canceled']) {
1981                         goaway(App::get_baseurl() . '/' . $_SESSION['return_url']);
1982                 }
1983
1984                 logger('delete item: ' . $item['id'], LOGGER_DEBUG);
1985                 // delete the item
1986
1987                 $r = q("UPDATE `item` SET `deleted` = 1, `title` = '', `body` = '', `edited` = '%s', `changed` = '%s' WHERE `id` = %d",
1988                         dbesc(datetime_convert()),
1989                         dbesc(datetime_convert()),
1990                         intval($item['id'])
1991                 );
1992                 create_tags_from_item($item['id']);
1993                 create_files_from_item($item['id']);
1994                 delete_thread($item['id'], $item['parent-uri']);
1995
1996                 // clean up categories and tags so they don't end up as orphans
1997
1998                 $matches = false;
1999                 $cnt = preg_match_all('/<(.*?)>/',$item['file'],$matches,PREG_SET_ORDER);
2000                 if ($cnt) {
2001                         foreach($matches as $mtch) {
2002                                 file_tag_unsave_file($item['uid'],$item['id'],$mtch[1],true);
2003                         }
2004                 }
2005
2006                 $matches = false;
2007
2008                 $cnt = preg_match_all('/\[(.*?)\]/',$item['file'],$matches,PREG_SET_ORDER);
2009                 if ($cnt) {
2010                         foreach($matches as $mtch) {
2011                                 file_tag_unsave_file($item['uid'],$item['id'],$mtch[1],false);
2012                         }
2013                 }
2014
2015                 // If item is a link to a photo resource, nuke all the associated photos
2016                 // (visitors will not have photo resources)
2017                 // This only applies to photos uploaded from the photos page. Photos inserted into a post do not
2018                 // generate a resource-id and therefore aren't intimately linked to the item.
2019
2020                 if (strlen($item['resource-id'])) {
2021                         q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `uid` = %d ",
2022                                 dbesc($item['resource-id']),
2023                                 intval($item['uid'])
2024                         );
2025                         // ignore the result
2026                 }
2027
2028                 // If item is a link to an event, nuke the event record.
2029
2030                 if (intval($item['event-id'])) {
2031                         q("DELETE FROM `event` WHERE `id` = %d AND `uid` = %d",
2032                                 intval($item['event-id']),
2033                                 intval($item['uid'])
2034                         );
2035                         // ignore the result
2036                 }
2037
2038                 // If item has attachments, drop them
2039
2040                 foreach(explode(",",$item['attach']) as $attach){
2041                         preg_match("|attach/(\d+)|", $attach, $matches);
2042                         q("DELETE FROM `attach` WHERE `id` = %d AND `uid` = %d",
2043                                 intval($matches[1]),
2044                                 local_user()
2045                         );
2046                         // ignore the result
2047                 }
2048
2049
2050                 // clean up item_id and sign meta-data tables
2051
2052                 /*
2053                 // Old code - caused very long queries and warning entries in the mysql logfiles:
2054
2055                 $r = q("DELETE FROM item_id where iid in (select id from item where parent = %d and uid = %d)",
2056                         intval($item['id']),
2057                         intval($item['uid'])
2058                 );
2059
2060                 $r = q("DELETE FROM sign where iid in (select id from item where parent = %d and uid = %d)",
2061                         intval($item['id']),
2062                         intval($item['uid'])
2063                 );
2064                 */
2065
2066                 // The new code splits the queries since the mysql optimizer really has bad problems with subqueries
2067
2068                 // Creating list of parents
2069                 $r = q("select id from item where parent = %d and uid = %d",
2070                         intval($item['id']),
2071                         intval($item['uid'])
2072                 );
2073
2074                 $parentid = "";
2075
2076                 foreach ($r AS $row) {
2077                         if ($parentid != "")
2078                                 $parentid .= ", ";
2079
2080                         $parentid .= $row["id"];
2081                 }
2082
2083                 // Now delete them
2084                 if ($parentid != "") {
2085                         $r = q("DELETE FROM item_id where iid in (%s)", dbesc($parentid));
2086
2087                         $r = q("DELETE FROM sign where iid in (%s)", dbesc($parentid));
2088                 }
2089
2090                 // If it's the parent of a comment thread, kill all the kids
2091
2092                 if ($item['uri'] == $item['parent-uri']) {
2093                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '' , `title` = ''
2094                                 WHERE `parent-uri` = '%s' AND `uid` = %d ",
2095                                 dbesc(datetime_convert()),
2096                                 dbesc(datetime_convert()),
2097                                 dbesc($item['parent-uri']),
2098                                 intval($item['uid'])
2099                         );
2100                         create_tags_from_itemuri($item['parent-uri'], $item['uid']);
2101                         create_files_from_itemuri($item['parent-uri'], $item['uid']);
2102                         delete_thread_uri($item['parent-uri'], $item['uid']);
2103                         // ignore the result
2104                 } else {
2105                         // ensure that last-child is set in case the comment that had it just got wiped.
2106                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
2107                                 dbesc(datetime_convert()),
2108                                 dbesc($item['parent-uri']),
2109                                 intval($item['uid'])
2110                         );
2111                         // who is the last child now?
2112                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d ORDER BY `edited` DESC LIMIT 1",
2113                                 dbesc($item['parent-uri']),
2114                                 intval($item['uid'])
2115                         );
2116                         if (dbm::is_result($r)) {
2117                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
2118                                         intval($r[0]['id'])
2119                                 );
2120                         }
2121                 }
2122
2123                 $drop_id = intval($item['id']);
2124
2125                 // send the notification upstream/downstream as the case may be
2126
2127                 proc_run(PRIORITY_HIGH,"include/notifier.php", "drop", $drop_id);
2128
2129                 if (! $interactive)
2130                         return $owner;
2131                 goaway(App::get_baseurl() . '/' . $_SESSION['return_url']);
2132                 //NOTREACHED
2133         } else {
2134                 if (! $interactive)
2135                         return 0;
2136                 notice( t('Permission denied.') . EOL);
2137                 goaway(App::get_baseurl() . '/' . $_SESSION['return_url']);
2138                 //NOTREACHED
2139         }
2140
2141 }
2142
2143
2144 function first_post_date($uid,$wall = false) {
2145         $r = q("select id, created from item
2146                 where uid = %d and wall = %d and deleted = 0 and visible = 1 AND moderated = 0
2147                 and id = parent
2148                 order by created asc limit 1",
2149                 intval($uid),
2150                 intval($wall ? 1 : 0)
2151         );
2152         if (dbm::is_result($r)) {
2153 //              logger('first_post_date: ' . $r[0]['id'] . ' ' . $r[0]['created'], LOGGER_DATA);
2154                 return substr(datetime_convert('',date_default_timezone_get(),$r[0]['created']),0,10);
2155         }
2156         return false;
2157 }
2158
2159 /* modified posted_dates() {below} to arrange the list in years */
2160 function list_post_dates($uid, $wall) {
2161         $dnow = datetime_convert('',date_default_timezone_get(),'now','Y-m-d');
2162
2163         $dthen = first_post_date($uid, $wall);
2164         if (! $dthen)
2165                 return array();
2166
2167         // Set the start and end date to the beginning of the month
2168         $dnow = substr($dnow,0,8).'01';
2169         $dthen = substr($dthen,0,8).'01';
2170
2171         $ret = array();
2172
2173         // Starting with the current month, get the first and last days of every
2174         // month down to and including the month of the first post
2175         while(substr($dnow, 0, 7) >= substr($dthen, 0, 7)) {
2176                 $dyear = intval(substr($dnow,0,4));
2177                 $dstart = substr($dnow,0,8) . '01';
2178                 $dend = substr($dnow,0,8) . get_dim(intval($dnow),intval(substr($dnow,5)));
2179                 $start_month = datetime_convert('','',$dstart,'Y-m-d');
2180                 $end_month = datetime_convert('','',$dend,'Y-m-d');
2181                 $str = day_translate(datetime_convert('','',$dnow,'F'));
2182                 if (! $ret[$dyear])
2183                         $ret[$dyear] = array();
2184                 $ret[$dyear][] = array($str,$end_month,$start_month);
2185                 $dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
2186         }
2187         return $ret;
2188 }
2189
2190 function posted_dates($uid,$wall) {
2191         $dnow = datetime_convert('',date_default_timezone_get(),'now','Y-m-d');
2192
2193         $dthen = first_post_date($uid,$wall);
2194         if (! $dthen)
2195                 return array();
2196
2197         // Set the start and end date to the beginning of the month
2198         $dnow = substr($dnow,0,8).'01';
2199         $dthen = substr($dthen,0,8).'01';
2200
2201         $ret = array();
2202         // Starting with the current month, get the first and last days of every
2203         // month down to and including the month of the first post
2204         while(substr($dnow, 0, 7) >= substr($dthen, 0, 7)) {
2205                 $dstart = substr($dnow,0,8) . '01';
2206                 $dend = substr($dnow,0,8) . get_dim(intval($dnow),intval(substr($dnow,5)));
2207                 $start_month = datetime_convert('','',$dstart,'Y-m-d');
2208                 $end_month = datetime_convert('','',$dend,'Y-m-d');
2209                 $str = day_translate(datetime_convert('','',$dnow,'F Y'));
2210                 $ret[] = array($str,$end_month,$start_month);
2211                 $dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
2212         }
2213         return $ret;
2214 }
2215
2216
2217 function posted_date_widget($url,$uid,$wall) {
2218         $o = '';
2219
2220         if (! feature_enabled($uid,'archives'))
2221                 return $o;
2222
2223         // For former Facebook folks that left because of "timeline"
2224
2225 /*      if ($wall && intval(get_pconfig($uid,'system','no_wall_archive_widget')))
2226                 return $o;*/
2227
2228         $visible_years = get_pconfig($uid,'system','archive_visible_years');
2229         if (! $visible_years)
2230                 $visible_years = 5;
2231
2232         $ret = list_post_dates($uid,$wall);
2233
2234         if (! dbm::is_result($ret))
2235                 return $o;
2236
2237         $cutoff_year = intval(datetime_convert('',date_default_timezone_get(),'now','Y')) - $visible_years;
2238         $cutoff = ((array_key_exists($cutoff_year,$ret))? true : false);
2239
2240         $o = replace_macros(get_markup_template('posted_date_widget.tpl'),array(
2241                 '$title' => t('Archives'),
2242                 '$size' => $visible_years,
2243                 '$cutoff_year' => $cutoff_year,
2244                 '$cutoff' => $cutoff,
2245                 '$url' => $url,
2246                 '$dates' => $ret,
2247                 '$showmore' => t('show more')
2248
2249         ));
2250         return $o;
2251 }