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 = $arr;
 822
 823         dbm::esc_array($arr, true);
 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                 // We use "microtime" to keep the arrival order and "mt_rand" to avoid duplicates
 861                 $file = 'item-'.round(microtime(true) * 10000).'-'.mt_rand().'.msg';
 862
 863                 $spoolpath = get_spoolpath();
 864                 if ($spoolpath != "") {
 865                         $spool = $spoolpath.'/'.$file;
 866                         file_put_contents($spool, json_encode($arr));
 867                         logger("Item wasn't stored - Item was spooled into file ".$file, LOGGER_DEBUG);
 868                 }
 869                 return 0;
 870         }
 871
 872         if ($current_post == 0) {
 873                 // This is one of these error messages that never should occur.
 874                 logger("couldn't find created item - we better quit now.");
 875                 q("ROLLBACK");
 876                 return 0;
 877         }
 878
 879         // How much entries have we created?
 880         // We wouldn't need this query when we could use an unique index - but MySQL has length problems with them.
 881         $r = q("SELECT COUNT(*) AS `entries` FROM `item` WHERE `uri` = '%s' AND `uid` = %d AND `network` = '%s'",
 882                 dbesc($arr['uri']),
 883                 intval($arr['uid']),
 884                 dbesc($arr['network'])
 885         );
 886
 887         if (!dbm::is_result($r)) {
 888                 // This shouldn't happen, since COUNT always works when the database connection is there.
 889                 logger("We couldn't count the stored entries. Very strange ...");
 890                 q("ROLLBACK");
 891                 return 0;
 892         }
 893
 894         if ($r[0]["entries"] > 1) {
 895                 // There are duplicates. We delete our just created entry.
 896                 logger('Duplicated post occurred. uri = '.$arr['uri'].' uid = '.$arr['uid']);
 897
 898                 // Yes, we could do a rollback here - but we are having many users with MyISAM.
 899                 q("DELETE FROM `item` WHERE `id` = %d", intval($current_post));
 900                 q("COMMIT");
 901                 return 0;
 902         } elseif ($r[0]["entries"] == 0) {
 903                 // This really should never happen since we quit earlier if there were problems.
 904                 logger("Something is terribly wrong. We haven't found our created entry.");
 905                 q("ROLLBACK");
 906                 return 0;
 907         }
 908
 909         logger('item_store: created item '.$current_post);
 910         item_set_last_item($arr);
 911
 912         if (!$parent_id || ($arr['parent-uri'] === $arr['uri']))
 913                 $parent_id = $current_post;
 914
 915         // Set parent id
 916         $r = q("UPDATE `item` SET `parent` = %d WHERE `id` = %d",
 917                 intval($parent_id),
 918                 intval($current_post)
 919         );
 920
 921         $arr['id'] = $current_post;
 922         $arr['parent'] = $parent_id;
 923
 924         // update the commented timestamp on the parent
 925         // Only update "commented" if it is really a comment
 926         if (($arr['verb'] == ACTIVITY_POST) OR !get_config("system", "like_no_comment"))
 927                 q("UPDATE `item` SET `commented` = '%s', `changed` = '%s' WHERE `id` = %d",
 928                         dbesc(datetime_convert()),
 929                         dbesc(datetime_convert()),
 930                         intval($parent_id)
 931                 );
 932         else
 933                 q("UPDATE `item` SET `changed` = '%s' WHERE `id` = %d",
 934                         dbesc(datetime_convert()),
 935                         intval($parent_id)
 936                 );
 937
 938         if ($dsprsig) {
 939
 940                 // Friendica servers lower than 3.4.3-2 had double encoded the signature ...
 941                 // We can check for this condition when we decode and encode the stuff again.
 942                 if (base64_encode(base64_decode(base64_decode($dsprsig->signature))) == base64_decode($dsprsig->signature)) {
 943                         $dsprsig->signature = base64_decode($dsprsig->signature);
 944                         logger("Repaired double encoded signature from handle ".$dsprsig->signer, LOGGER_DEBUG);
 945                 }
 946
 947                 q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
 948                         intval($current_post),
 949                         dbesc($dsprsig->signed_text),
 950                         dbesc($dsprsig->signature),
 951                         dbesc($dsprsig->signer)
 952                 );
 953         }
 954
 955         $deleted = tag_deliver($arr['uid'],$current_post);
 956
 957         // current post can be deleted if is for a community page and no mention are
 958         // in it.
 959         if (!$deleted AND !$dontcache) {
 960
 961                 $r = q('SELECT * FROM `item` WHERE `id` = %d', intval($current_post));
 962                 if ((dbm::is_result($r)) && (count($r) == 1)) {
 963                         if ($notify) {
 964                                 call_hooks('post_local_end', $r[0]);
 965                         } else {
 966                                 call_hooks('post_remote_end', $r[0]);
 967                         }
 968                 } else {
 969                         logger('item_store: new item not found in DB, id ' . $current_post);
 970                 }
 971         }
 972
 973         if ($arr['parent-uri'] === $arr['uri']) {
 974                 add_thread($current_post);
 975         } else {
 976                 update_thread($parent_id);
 977         }
 978
 979         q("COMMIT");
 980
 981         // Due to deadlock issues with the "term" table we are doing these steps after the commit.
 982         // This is not perfect - but a workable solution until we found the reason for the problem.
 983         create_tags_from_item($current_post);
 984         create_files_from_item($current_post);
 985
 986         // If this is now the last-child, force all _other_ children of this parent to *not* be last-child
 987         // It is done after the transaction to avoid dead locks.
 988         if ($arr['last-child']) {
 989                 $r = q("UPDATE `item` SET `last-child` = 0 WHERE `parent-uri` = '%s' AND `uid` = %d AND `id` != %d",
 990                         dbesc($arr['uri']),
 991                         intval($arr['uid']),
 992                         intval($current_post)
 993                 );
 994         }
 995
 996         if ($arr['parent-uri'] === $arr['uri']) {
 997                 add_shadow_thread($current_post);
 998         } else {
 999                 add_shadow_entry($current_post);
1000         }
1001
1002         check_item_notification($current_post, $uid);
1003
1004         if ($notify) {
1005                 proc_run(PRIORITY_HIGH, "include/notifier.php", $notify_type, $current_post);
1006         }
1007
1008         return $current_post;
1009 }
1010
1011 /**
1012  * @brief Set "success_update" and "last-item" to the date of the last time we heard from this contact
1013  *
1014  * This can be used to filter for inactive contacts.
1015  * Only do this for public postings to avoid privacy problems, since poco data is public.
1016  * Don't set this value if it isn't from the owner (could be an author that we don't know)
1017  *
1018  * @param array $arr Contains the just posted item record
1019  */
1020 function item_set_last_item($arr) {
1021
1022         $update = (!$arr['private'] AND (($arr["author-link"] === $arr["owner-link"]) OR ($arr["parent-uri"] === $arr["uri"])));
1023
1024         // Is it a forum? Then we don't care about the rules from above
1025         if (!$update AND ($arr["network"] == NETWORK_DFRN) AND ($arr["parent-uri"] === $arr["uri"])) {
1026                 $isforum = q("SELECT `forum` FROM `contact` WHERE `id` = %d AND `forum`",
1027                                 intval($arr['contact-id']));
1028                 if ($isforum) {
1029                         $update = true;
1030                 }
1031         }
1032
1033         if ($update) {
1034                 q("UPDATE `contact` SET `success_update` = '%s', `last-item` = '%s' WHERE `id` = %d",
1035                         dbesc($arr['received']),
1036                         dbesc($arr['received']),
1037                         intval($arr['contact-id'])
1038                 );
1039         }
1040         // Now do the same for the system wide contacts with uid=0
1041         if (!$arr['private']) {
1042                 q("UPDATE `contact` SET `success_update` = '%s', `last-item` = '%s' WHERE `id` = %d",
1043                         dbesc($arr['received']),
1044                         dbesc($arr['received']),
1045                         intval($arr['owner-id'])
1046                 );
1047
1048                 if ($arr['owner-id'] != $arr['author-id']) {
1049                         q("UPDATE `contact` SET `success_update` = '%s', `last-item` = '%s' WHERE `id` = %d",
1050                                 dbesc($arr['received']),
1051                                 dbesc($arr['received']),
1052                                 intval($arr['author-id'])
1053                         );
1054                 }
1055         }
1056 }
1057
1058 function item_body_set_hashtags(&$item) {
1059
1060         $tags = get_tags($item["body"]);
1061
1062         // No hashtags?
1063         if (!count($tags))
1064                 return(false);
1065
1066         // This sorting is important when there are hashtags that are part of other hashtags
1067         // Otherwise there could be problems with hashtags like #test and #test2
1068         rsort($tags);
1069
1070         $a = get_app();
1071
1072         $URLSearchString = "^\[\]";
1073
1074         // All hashtags should point to the home server
1075         //$item["body"] = preg_replace("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1076         //              "#[url=".App::get_baseurl()."/search?tag=$2]$2[/url]", $item["body"]);
1077
1078         //$item["tag"] = preg_replace("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1079         //              "#[url=".App::get_baseurl()."/search?tag=$2]$2[/url]", $item["tag"]);
1080
1081         // mask hashtags inside of url, bookmarks and attachments to avoid urls in urls
1082         $item["body"] = preg_replace_callback("/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1083                 function ($match){
1084                         return("[url=".str_replace("#", "&num;", $match[1])."]".str_replace("#", "&num;", $match[2])."[/url]");
1085                 },$item["body"]);
1086
1087         $item["body"] = preg_replace_callback("/\[bookmark\=([$URLSearchString]*)\](.*?)\[\/bookmark\]/ism",
1088                 function ($match){
1089                         return("[bookmark=".str_replace("#", "&num;", $match[1])."]".str_replace("#", "&num;", $match[2])."[/bookmark]");
1090                 },$item["body"]);
1091
1092         $item["body"] = preg_replace_callback("/\[attachment (.*)\](.*?)\[\/attachment\]/ism",
1093                 function ($match){
1094                         return("[attachment ".str_replace("#", "&num;", $match[1])."]".$match[2]."[/attachment]");
1095                 },$item["body"]);
1096
1097         // Repair recursive urls
1098         $item["body"] = preg_replace("/&num;\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1099                         "&num;$2", $item["body"]);
1100
1101
1102         foreach($tags as $tag) {
1103                 if (strpos($tag,'#') !== 0)
1104                         continue;
1105
1106                 if (strpos($tag,'[url='))
1107                         continue;
1108
1109                 $basetag = str_replace('_',' ',substr($tag,1));
1110
1111                 $newtag = '#[url='.App::get_baseurl().'/search?tag='.rawurlencode($basetag).']'.$basetag.'[/url]';
1112
1113                 $item["body"] = str_replace($tag, $newtag, $item["body"]);
1114
1115                 if (!stristr($item["tag"],"/search?tag=".$basetag."]".$basetag."[/url]")) {
1116                         if (strlen($item["tag"]))
1117                                 $item["tag"] = ','.$item["tag"];
1118                         $item["tag"] = $newtag.$item["tag"];
1119                 }
1120         }
1121
1122         // Convert back the masked hashtags
1123         $item["body"] = str_replace("&num;", "#", $item["body"]);
1124 }
1125
1126 function get_item_guid($id) {
1127         $r = q("SELECT `guid` FROM `item` WHERE `id` = %d LIMIT 1", intval($id));
1128         if (dbm::is_result($r))
1129                 return($r[0]["guid"]);
1130         else
1131                 return("");
1132 }
1133
1134 function get_item_id($guid, $uid = 0) {
1135
1136         $nick = "";
1137         $id = 0;
1138
1139         if ($uid == 0)
1140                 $uid == local_user();
1141
1142         // Does the given user have this item?
1143         if ($uid) {
1144                 $r = q("SELECT `item`.`id`, `user`.`nickname` FROM `item` INNER JOIN `user` ON `user`.`uid` = `item`.`uid`
1145                         WHERE `item`.`visible` = 1 AND `item`.`deleted` = 0 and `item`.`moderated` = 0
1146                                 AND `item`.`guid` = '%s' AND `item`.`uid` = %d", dbesc($guid), intval($uid));
1147                 if (dbm::is_result($r)) {
1148                         $id = $r[0]["id"];
1149                         $nick = $r[0]["nickname"];
1150                 }
1151         }
1152
1153         // Or is it anywhere on the server?
1154         if ($nick == "") {
1155                 $r = q("SELECT `item`.`id`, `user`.`nickname` FROM `item` INNER JOIN `user` ON `user`.`uid` = `item`.`uid`
1156                         WHERE `item`.`visible` = 1 AND `item`.`deleted` = 0 and `item`.`moderated` = 0
1157                                 AND `item`.`allow_cid` = ''  AND `item`.`allow_gid` = ''
1158                                 AND `item`.`deny_cid`  = '' AND `item`.`deny_gid`  = ''
1159                                 AND `item`.`private` = 0 AND `item`.`wall` = 1
1160                                 AND `item`.`guid` = '%s'", dbesc($guid));
1161                 if (dbm::is_result($r)) {
1162                         $id = $r[0]["id"];
1163                         $nick = $r[0]["nickname"];
1164                 }
1165         }
1166         return(array("nick" => $nick, "id" => $id));
1167 }
1168
1169 // return - test
1170 function get_item_contact($item,$contacts) {
1171         if (! count($contacts) || (! is_array($item)))
1172                 return false;
1173         foreach($contacts as $contact) {
1174                 if ($contact['id'] == $item['contact-id']) {
1175                         return $contact;
1176                         break; // NOTREACHED
1177                 }
1178         }
1179         return false;
1180 }
1181
1182 /**
1183  * look for mention tags and setup a second delivery chain for forum/community posts if appropriate
1184  * @param int $uid
1185  * @param int $item_id
1186  * @return bool true if item was deleted, else false
1187  */
1188 function tag_deliver($uid,$item_id) {
1189
1190         //
1191
1192         $a = get_app();
1193
1194         $mention = false;
1195
1196         $u = q("select * from user where uid = %d limit 1",
1197                 intval($uid)
1198         );
1199
1200         if (! dbm::is_result($u)) {
1201                 return;
1202         }
1203
1204         $community_page = (($u[0]['page-flags'] == PAGE_COMMUNITY) ? true : false);
1205         $prvgroup = (($u[0]['page-flags'] == PAGE_PRVGROUP) ? true : false);
1206
1207
1208         $i = q("SELECT * FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
1209                 intval($item_id),
1210                 intval($uid)
1211         );
1212         if (! dbm::is_result($i)) {
1213                 return;
1214         }
1215
1216         $item = $i[0];
1217
1218         $link = normalise_link(App::get_baseurl() . '/profile/' . $u[0]['nickname']);
1219
1220         // Diaspora uses their own hardwired link URL in @-tags
1221         // instead of the one we supply with webfinger
1222
1223         $dlink = normalise_link(App::get_baseurl() . '/u/' . $u[0]['nickname']);
1224
1225         $cnt = preg_match_all('/[\@\!]\[url\=(.*?)\](.*?)\[\/url\]/ism',$item['body'],$matches,PREG_SET_ORDER);
1226         if ($cnt) {
1227                 foreach($matches as $mtch) {
1228                         if (link_compare($link,$mtch[1]) || link_compare($dlink,$mtch[1])) {
1229                                 $mention = true;
1230                                 logger('tag_deliver: mention found: ' . $mtch[2]);
1231                         }
1232                 }
1233         }
1234
1235         if (! $mention){
1236                 if ( ($community_page || $prvgroup) &&
1237                           (!$item['wall']) && (!$item['origin']) && ($item['id'] == $item['parent'])){
1238                         // mmh.. no mention.. community page or private group... no wall.. no origin.. top-post (not a comment)
1239                         // delete it!
1240                         logger("tag_deliver: no-mention top-level post to communuty or private group. delete.");
1241                         q("DELETE FROM item WHERE id = %d and uid = %d",
1242                                 intval($item_id),
1243                                 intval($uid)
1244                         );
1245                         return true;
1246                 }
1247                 return;
1248         }
1249
1250         $arr = array('item' => $item, 'user' => $u[0], 'contact' => $r[0]);
1251
1252         call_hooks('tagged', $arr);
1253
1254         if ((! $community_page) && (! $prvgroup))
1255                 return;
1256
1257
1258         // tgroup delivery - setup a second delivery chain
1259         // prevent delivery looping - only proceed
1260         // if the message originated elsewhere and is a top-level post
1261
1262         if (($item['wall']) || ($item['origin']) || ($item['id'] != $item['parent']))
1263                 return;
1264
1265         // now change this copy of the post to a forum head message and deliver to all the tgroup members
1266
1267
1268         $c = q("select name, url, thumb from contact where self = 1 and uid = %d limit 1",
1269                 intval($u[0]['uid'])
1270         );
1271         if (! dbm::is_result($c)) {
1272                 return;
1273         }
1274
1275         // also reset all the privacy bits to the forum default permissions
1276
1277         $private = ($u[0]['allow_cid'] || $u[0]['allow_gid'] || $u[0]['deny_cid'] || $u[0]['deny_gid']) ? 1 : 0;
1278
1279         $forum_mode = (($prvgroup) ? 2 : 1);
1280
1281         q("UPDATE `item` SET `wall` = 1, `origin` = 1, `forum_mode` = %d, `owner-name` = '%s', `owner-link` = '%s', `owner-avatar` = '%s',
1282                 `private` = %d, `allow_cid` = '%s', `allow_gid` = '%s', `deny_cid` = '%s', `deny_gid` = '%s'  WHERE `id` = %d",
1283                 intval($forum_mode),
1284                 dbesc($c[0]['name']),
1285                 dbesc($c[0]['url']),
1286                 dbesc($c[0]['thumb']),
1287                 intval($private),
1288                 dbesc($u[0]['allow_cid']),
1289                 dbesc($u[0]['allow_gid']),
1290                 dbesc($u[0]['deny_cid']),
1291                 dbesc($u[0]['deny_gid']),
1292                 intval($item_id)
1293         );
1294         update_thread($item_id);
1295
1296         proc_run(PRIORITY_HIGH,'include/notifier.php', 'tgroup', $item_id);
1297
1298 }
1299
1300
1301
1302 function tgroup_check($uid,$item) {
1303
1304         $mention = false;
1305
1306         // check that the message originated elsewhere and is a top-level post
1307
1308         if (($item['wall']) || ($item['origin']) || ($item['uri'] != $item['parent-uri']))
1309                 return false;
1310
1311         /// @TODO Encapsulate this or find it encapsulated and replace all occurrances
1312         $u = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
1313                 intval($uid)
1314         );
1315         if (! dbm::is_result($u)) {
1316                 return false;
1317         }
1318
1319         $community_page = (($u[0]['page-flags'] == PAGE_COMMUNITY) ? true : false);
1320         $prvgroup = (($u[0]['page-flags'] == PAGE_PRVGROUP) ? true : false);
1321
1322
1323         $link = normalise_link(App::get_baseurl() . '/profile/' . $u[0]['nickname']);
1324
1325         // Diaspora uses their own hardwired link URL in @-tags
1326         // instead of the one we supply with webfinger
1327
1328         $dlink = normalise_link(App::get_baseurl() . '/u/' . $u[0]['nickname']);
1329
1330         $cnt = preg_match_all('/[\@\!]\[url\=(.*?)\](.*?)\[\/url\]/ism',$item['body'],$matches,PREG_SET_ORDER);
1331         if ($cnt) {
1332                 foreach ($matches as $mtch) {
1333                         if (link_compare($link,$mtch[1]) || link_compare($dlink,$mtch[1])) {
1334                                 $mention = true;
1335                                 logger('tgroup_check: mention found: ' . $mtch[2]);
1336                         }
1337                 }
1338         }
1339
1340         if (! $mention) {
1341                 return false;
1342         }
1343
1344         /// @TODO Combines both return statements into one
1345         return (($community_page) || ($prvgroup));
1346 }
1347
1348 /*
1349   This function returns true if $update has an edited timestamp newer
1350   than $existing, i.e. $update contains new data which should override
1351   what's already there.  If there is no timestamp yet, the update is
1352   assumed to be newer.  If the update has no timestamp, the existing
1353   item is assumed to be up-to-date.  If the timestamps are equal it
1354   assumes the update has been seen before and should be ignored.
1355   */
1356 function edited_timestamp_is_newer($existing, $update) {
1357         if (!x($existing,'edited') || !$existing['edited']) {
1358                 return true;
1359         }
1360         if (!x($update,'edited') || !$update['edited']) {
1361                 return false;
1362         }
1363
1364         $existing_edited = datetime_convert('UTC', 'UTC', $existing['edited']);
1365         $update_edited = datetime_convert('UTC', 'UTC', $update['edited']);
1366         return (strcmp($existing_edited, $update_edited) < 0);
1367 }
1368
1369 /**
1370  *
1371  * consume_feed - process atom feed and update anything/everything we might need to update
1372  *
1373  * $xml = the (atom) feed to consume - RSS isn't as fully supported but may work for simple feeds.
1374  *
1375  * $importer = the contact_record (joined to user_record) of the local user who owns this relationship.
1376  *             It is this person's stuff that is going to be updated.
1377  * $contact =  the person who is sending us stuff. If not set, we MAY be processing a "follow" activity
1378  *             from an external network and MAY create an appropriate contact record. Otherwise, we MUST
1379  *             have a contact record.
1380  * $hub = should we find a hub declation in the feed, pass it back to our calling process, who might (or
1381  *        might not) try and subscribe to it.
1382  * $datedir sorts in reverse order
1383  * $pass - by default ($pass = 0) we cannot guarantee that a parent item has been
1384  *      imported prior to its children being seen in the stream unless we are certain
1385  *      of how the feed is arranged/ordered.
1386  * With $pass = 1, we only pull parent items out of the stream.
1387  * With $pass = 2, we only pull children (comments/likes).
1388  *
1389  * So running this twice, first with pass 1 and then with pass 2 will do the right
1390  * thing regardless of feed ordering. This won't be adequate in a fully-threaded
1391  * model where comments can have sub-threads. That would require some massive sorting
1392  * to get all the feed items into a mostly linear ordering, and might still require
1393  * recursion.
1394  */
1395
1396 function consume_feed($xml,$importer,&$contact, &$hub, $datedir = 0, $pass = 0) {
1397         if ($contact['network'] === NETWORK_OSTATUS) {
1398                 if ($pass < 2) {
1399                         // Test - remove before flight
1400                         //$tempfile = tempnam(get_temppath(), "ostatus2");
1401                         //file_put_contents($tempfile, $xml);
1402                         logger("Consume OStatus messages ", LOGGER_DEBUG);
1403                         ostatus::import($xml,$importer,$contact, $hub);
1404                 }
1405                 return;
1406         }
1407
1408         if ($contact['network'] === NETWORK_FEED) {
1409                 if ($pass < 2) {
1410                         logger("Consume feeds", LOGGER_DEBUG);
1411                         feed_import($xml,$importer,$contact, $hub);
1412                 }
1413                 return;
1414         }
1415
1416         if ($contact['network'] === NETWORK_DFRN) {
1417                 logger("Consume DFRN messages", LOGGER_DEBUG);
1418
1419                 $r = q("SELECT  `contact`.*, `contact`.`uid` AS `importer_uid`,
1420                                         `contact`.`pubkey` AS `cpubkey`,
1421                                         `contact`.`prvkey` AS `cprvkey`,
1422                                         `contact`.`thumb` AS `thumb`,
1423                                         `contact`.`url` as `url`,
1424                                         `contact`.`name` as `senderName`,
1425                                         `user`.*
1426                         FROM `contact`
1427                         LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
1428                         WHERE `contact`.`id` = %d AND `user`.`uid` = %d",
1429                         dbesc($contact["id"]), dbesc($importer["uid"])
1430                 );
1431                 if ($r) {
1432                         logger("Now import the DFRN feed");
1433                         dfrn::import($xml,$r[0], true);
1434                         return;
1435                 }
1436         }
1437 }
1438
1439 function item_is_remote_self($contact, &$datarray) {
1440         $a = get_app();
1441
1442         if (!$contact['remote_self'])
1443                 return false;
1444
1445         // Prevent the forwarding of posts that are forwarded
1446         if ($datarray["extid"] == NETWORK_DFRN)
1447                 return false;
1448
1449         // Prevent to forward already forwarded posts
1450         if ($datarray["app"] == $a->get_hostname())
1451                 return false;
1452
1453         // Only forward posts
1454         if ($datarray["verb"] != ACTIVITY_POST)
1455                 return false;
1456
1457         if (($contact['network'] != NETWORK_FEED) AND $datarray['private'])
1458                 return false;
1459
1460         $datarray2 = $datarray;
1461         logger('remote-self start - Contact '.$contact['url'].' - '.$contact['remote_self'].' Item '.print_r($datarray, true), LOGGER_DEBUG);
1462         if ($contact['remote_self'] == 2) {
1463                 $r = q("SELECT `id`,`url`,`name`,`thumb` FROM `contact` WHERE `uid` = %d AND `self`",
1464                         intval($contact['uid']));
1465                 if (dbm::is_result($r)) {
1466                         $datarray['contact-id'] = $r[0]["id"];
1467
1468                         $datarray['owner-name'] = $r[0]["name"];
1469                         $datarray['owner-link'] = $r[0]["url"];
1470                         $datarray['owner-avatar'] = $r[0]["thumb"];
1471
1472                         $datarray['author-name']   = $datarray['owner-name'];
1473                         $datarray['author-link']   = $datarray['owner-link'];
1474                         $datarray['author-avatar'] = $datarray['owner-avatar'];
1475                 }
1476
1477                 if ($contact['network'] != NETWORK_FEED) {
1478                         $datarray["guid"] = get_guid(32);
1479                         unset($datarray["plink"]);
1480                         $datarray["uri"] = item_new_uri($a->get_hostname(),$contact['uid'], $datarray["guid"]);
1481                         $datarray["parent-uri"] = $datarray["uri"];
1482                         $datarray["extid"] = $contact['network'];
1483                         $urlpart = parse_url($datarray2['author-link']);
1484                         $datarray["app"] = $urlpart["host"];
1485                 } else
1486                         $datarray['private'] = 0;
1487         }
1488
1489         if ($contact['network'] != NETWORK_FEED) {
1490                 // Store the original post
1491                 $r = item_store($datarray2, false, false);
1492                 logger('remote-self post original item - Contact '.$contact['url'].' return '.$r.' Item '.print_r($datarray2, true), LOGGER_DEBUG);
1493         } else
1494                 $datarray["app"] = "Feed";
1495
1496         return true;
1497 }
1498
1499 function new_follower($importer,$contact,$datarray,$item,$sharing = false) {
1500         $url = notags(trim($datarray['author-link']));
1501         $name = notags(trim($datarray['author-name']));
1502         $photo = notags(trim($datarray['author-avatar']));
1503
1504         if (is_object($item)) {
1505                 $rawtag = $item->get_item_tags(NAMESPACE_ACTIVITY,'actor');
1506                 if ($rawtag && $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'])
1507                         $nick = $rawtag[0]['child'][NAMESPACE_POCO]['preferredUsername'][0]['data'];
1508         } else
1509                 $nick = $item;
1510
1511         if (is_array($contact)) {
1512                 if (($contact['network'] == NETWORK_OSTATUS && $contact['rel'] == CONTACT_IS_SHARING)
1513                         || ($sharing && $contact['rel'] == CONTACT_IS_FOLLOWER)) {
1514                         $r = q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
1515                                 intval(CONTACT_IS_FRIEND),
1516                                 intval($contact['id']),
1517                                 intval($importer['uid'])
1518                         );
1519                 }
1520                 // send email notification to owner?
1521         } else {
1522
1523                 // create contact record
1524
1525                 $r = q("INSERT INTO `contact` (`uid`, `created`, `url`, `nurl`, `name`, `nick`, `photo`, `network`, `rel`,
1526                         `blocked`, `readonly`, `pending`, `writable`)
1527                         VALUES (%d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 1, 1)",
1528                         intval($importer['uid']),
1529                         dbesc(datetime_convert()),
1530                         dbesc($url),
1531                         dbesc(normalise_link($url)),
1532                         dbesc($name),
1533                         dbesc($nick),
1534                         dbesc($photo),
1535                         dbesc(($sharing) ? NETWORK_ZOT : NETWORK_OSTATUS),
1536                         intval(($sharing) ? CONTACT_IS_SHARING : CONTACT_IS_FOLLOWER)
1537                 );
1538                 $r = q("SELECT `id`, `network` FROM `contact` WHERE `uid` = %d AND `url` = '%s' AND `pending` = 1 LIMIT 1",
1539                                 intval($importer['uid']),
1540                                 dbesc($url)
1541                 );
1542                 if (dbm::is_result($r)) {
1543                         $contact_record = $r[0];
1544                         update_contact_avatar($photo, $importer["uid"], $contact_record["id"], true);
1545                 }
1546
1547
1548                 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
1549                         intval($importer['uid'])
1550                 );
1551                 $a = get_app();
1552
1553                 if (dbm::is_result($r) AND !in_array($r[0]['page-flags'], array(PAGE_SOAPBOX, PAGE_FREELOVE))) {
1554
1555                         // create notification
1556                         $hash = random_string();
1557
1558                         if (is_array($contact_record)) {
1559                                 $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `hash`, `datetime`)
1560                                         VALUES ( %d, %d, 0, 0, '%s', '%s' )",
1561                                         intval($importer['uid']),
1562                                         intval($contact_record['id']),
1563                                         dbesc($hash),
1564                                         dbesc(datetime_convert())
1565                                 );
1566                         }
1567
1568                         $def_gid = get_default_group($importer['uid'], $contact_record["network"]);
1569
1570                         if (intval($def_gid))
1571                                 group_add_member($importer['uid'],'',$contact_record['id'],$def_gid);
1572
1573                         if (($r[0]['notify-flags'] & NOTIFY_INTRO) &&
1574                                 in_array($r[0]['page-flags'], array(PAGE_NORMAL))) {
1575
1576                                 notification(array(
1577                                         'type'         => NOTIFY_INTRO,
1578                                         'notify_flags' => $r[0]['notify-flags'],
1579                                         'language'     => $r[0]['language'],
1580                                         'to_name'      => $r[0]['username'],
1581                                         'to_email'     => $r[0]['email'],
1582                                         'uid'          => $r[0]['uid'],
1583                                         'link'             => App::get_baseurl() . '/notifications/intro',
1584                                         'source_name'  => ((strlen(stripslashes($contact_record['name']))) ? stripslashes($contact_record['name']) : t('[Name Withheld]')),
1585                                         'source_link'  => $contact_record['url'],
1586                                         'source_photo' => $contact_record['photo'],
1587                                         'verb'         => ($sharing ? ACTIVITY_FRIEND : ACTIVITY_FOLLOW),
1588                                         'otype'        => 'intro'
1589                                 ));
1590
1591                         }
1592                 } elseif (dbm::is_result($r) AND in_array($r[0]['page-flags'], array(PAGE_SOAPBOX, PAGE_FREELOVE))) {
1593                         $r = q("UPDATE `contact` SET `pending` = 0 WHERE `uid` = %d AND `url` = '%s' AND `pending` LIMIT 1",
1594                                         intval($importer['uid']),
1595                                         dbesc($url)
1596                         );
1597                 }
1598
1599         }
1600 }
1601
1602 function lose_follower($importer,$contact,$datarray = array(),$item = "") {
1603
1604         if (($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_SHARING)) {
1605                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d",
1606                         intval(CONTACT_IS_SHARING),
1607                         intval($contact['id'])
1608                 );
1609         } else {
1610                 contact_remove($contact['id']);
1611         }
1612 }
1613
1614 function lose_sharer($importer,$contact,$datarray = array(),$item = "") {
1615
1616         if (($contact['rel'] == CONTACT_IS_FRIEND) || ($contact['rel'] == CONTACT_IS_FOLLOWER)) {
1617                 q("UPDATE `contact` SET `rel` = %d WHERE `id` = %d",
1618                         intval(CONTACT_IS_FOLLOWER),
1619                         intval($contact['id'])
1620                 );
1621         } else {
1622                 contact_remove($contact['id']);
1623         }
1624 }
1625
1626 function subscribe_to_hub($url,$importer,$contact,$hubmode = 'subscribe') {
1627
1628         $a = get_app();
1629
1630         if (is_array($importer)) {
1631                 $r = q("SELECT `nickname` FROM `user` WHERE `uid` = %d LIMIT 1",
1632                         intval($importer['uid'])
1633                 );
1634         }
1635
1636         // Diaspora has different message-ids in feeds than they do
1637         // through the direct Diaspora protocol. If we try and use
1638         // the feed, we'll get duplicates. So don't.
1639
1640         if ((! dbm::is_result($r)) || $contact['network'] === NETWORK_DIASPORA)
1641                 return;
1642
1643         $push_url = get_config('system','url') . '/pubsub/' . $r[0]['nickname'] . '/' . $contact['id'];
1644
1645         // Use a single verify token, even if multiple hubs
1646
1647         $verify_token = ((strlen($contact['hub-verify'])) ? $contact['hub-verify'] : random_string());
1648
1649         $params= 'hub.mode=' . $hubmode . '&hub.callback=' . urlencode($push_url) . '&hub.topic=' . urlencode($contact['poll']) . '&hub.verify=async&hub.verify_token=' . $verify_token;
1650
1651         logger('subscribe_to_hub: ' . $hubmode . ' ' . $contact['name'] . ' to hub ' . $url . ' endpoint: '  . $push_url . ' with verifier ' . $verify_token);
1652
1653         if (!strlen($contact['hub-verify']) OR ($contact['hub-verify'] != $verify_token)) {
1654                 $r = q("UPDATE `contact` SET `hub-verify` = '%s' WHERE `id` = %d",
1655                         dbesc($verify_token),
1656                         intval($contact['id'])
1657                 );
1658         }
1659
1660         post_url($url,$params);
1661
1662         logger('subscribe_to_hub: returns: ' . $a->get_curl_code(), LOGGER_DEBUG);
1663
1664         return;
1665
1666 }
1667
1668 function fix_private_photos($s, $uid, $item = null, $cid = 0) {
1669
1670         if (get_config('system','disable_embedded'))
1671                 return $s;
1672
1673         $a = get_app();
1674
1675         logger('fix_private_photos: check for photos', LOGGER_DEBUG);
1676         $site = substr(App::get_baseurl(),strpos(App::get_baseurl(),'://'));
1677
1678         $orig_body = $s;
1679         $new_body = '';
1680
1681         $img_start = strpos($orig_body, '[img');
1682         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
1683         $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
1684         while( ($img_st_close !== false) && ($img_len !== false) ) {
1685
1686                 $img_st_close++; // make it point to AFTER the closing bracket
1687                 $image = substr($orig_body, $img_start + $img_st_close, $img_len);
1688
1689                 logger('fix_private_photos: found photo ' . $image, LOGGER_DEBUG);
1690
1691
1692                 if (stristr($image , $site . '/photo/')) {
1693                         // Only embed locally hosted photos
1694                         $replace = false;
1695                         $i = basename($image);
1696                         $i = str_replace(array('.jpg','.png','.gif'),array('','',''),$i);
1697                         $x = strpos($i,'-');
1698
1699                         if ($x) {
1700                                 $res = substr($i,$x+1);
1701                                 $i = substr($i,0,$x);
1702                                 $r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d AND `uid` = %d",
1703                                         dbesc($i),
1704                                         intval($res),
1705                                         intval($uid)
1706                                 );
1707                                 if ($r) {
1708
1709                                         // Check to see if we should replace this photo link with an embedded image
1710                                         // 1. No need to do so if the photo is public
1711                                         // 2. If there's a contact-id provided, see if they're in the access list
1712                                         //    for the photo. If so, embed it.
1713                                         // 3. Otherwise, if we have an item, see if the item permissions match the photo
1714                                         //    permissions, regardless of order but first check to see if they're an exact
1715                                         //    match to save some processing overhead.
1716
1717                                         if (has_permissions($r[0])) {
1718                                                 if ($cid) {
1719                                                         $recips = enumerate_permissions($r[0]);
1720                                                         if (in_array($cid, $recips)) {
1721                                                                 $replace = true;
1722                                                         }
1723                                                 } elseif ($item) {
1724                                                         if (compare_permissions($item,$r[0]))
1725                                                                 $replace = true;
1726                                                 }
1727                                         }
1728                                         if ($replace) {
1729                                                 $data = $r[0]['data'];
1730                                                 $type = $r[0]['type'];
1731
1732                                                 // If a custom width and height were specified, apply before embedding
1733                                                 if (preg_match("/\[img\=([0-9]*)x([0-9]*)\]/is", substr($orig_body, $img_start, $img_st_close), $match)) {
1734                                                         logger('fix_private_photos: scaling photo', LOGGER_DEBUG);
1735
1736                                                         $width = intval($match[1]);
1737                                                         $height = intval($match[2]);
1738
1739                                                         $ph = new Photo($data, $type);
1740                                                         if ($ph->is_valid()) {
1741                                                                 $ph->scaleImage(max($width, $height));
1742                                                                 $data = $ph->imageString();
1743                                                                 $type = $ph->getType();
1744                                                         }
1745                                                 }
1746
1747                                                 logger('fix_private_photos: replacing photo', LOGGER_DEBUG);
1748                                                 $image = 'data:' . $type . ';base64,' . base64_encode($data);
1749                                                 logger('fix_private_photos: replaced: ' . $image, LOGGER_DATA);
1750                                         }
1751                                 }
1752                         }
1753                 }
1754
1755                 $new_body = $new_body . substr($orig_body, 0, $img_start + $img_st_close) . $image . '[/img]';
1756                 $orig_body = substr($orig_body, $img_start + $img_st_close + $img_len + strlen('[/img]'));
1757                 if ($orig_body === false)
1758                         $orig_body = '';
1759
1760                 $img_start = strpos($orig_body, '[img');
1761                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
1762                 $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
1763         }
1764
1765         $new_body = $new_body . $orig_body;
1766
1767         return($new_body);
1768 }
1769
1770 function has_permissions($obj) {
1771         if (($obj['allow_cid'] != '') || ($obj['allow_gid'] != '') || ($obj['deny_cid'] != '') || ($obj['deny_gid'] != ''))
1772                 return true;
1773         return false;
1774 }
1775
1776 function compare_permissions($obj1,$obj2) {
1777         // first part is easy. Check that these are exactly the same.
1778         if (($obj1['allow_cid'] == $obj2['allow_cid'])
1779                 && ($obj1['allow_gid'] == $obj2['allow_gid'])
1780                 && ($obj1['deny_cid'] == $obj2['deny_cid'])
1781                 && ($obj1['deny_gid'] == $obj2['deny_gid']))
1782                 return true;
1783
1784         // This is harder. Parse all the permissions and compare the resulting set.
1785
1786         $recipients1 = enumerate_permissions($obj1);
1787         $recipients2 = enumerate_permissions($obj2);
1788         sort($recipients1);
1789         sort($recipients2);
1790         if ($recipients1 == $recipients2)
1791                 return true;
1792         return false;
1793 }
1794
1795 // returns an array of contact-ids that are allowed to see this object
1796
1797 function enumerate_permissions($obj) {
1798         $allow_people = expand_acl($obj['allow_cid']);
1799         $allow_groups = expand_groups(expand_acl($obj['allow_gid']));
1800         $deny_people  = expand_acl($obj['deny_cid']);
1801         $deny_groups  = expand_groups(expand_acl($obj['deny_gid']));
1802         $recipients   = array_unique(array_merge($allow_people,$allow_groups));
1803         $deny         = array_unique(array_merge($deny_people,$deny_groups));
1804         $recipients   = array_diff($recipients,$deny);
1805         return $recipients;
1806 }
1807
1808 function item_getfeedtags($item) {
1809         $ret = array();
1810         $matches = false;
1811         $cnt = preg_match_all('|\#\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
1812         if ($cnt) {
1813                 for($x = 0; $x < $cnt; $x ++) {
1814                         if ($matches[1][$x])
1815                                 $ret[$matches[2][$x]] = array('#',$matches[1][$x], $matches[2][$x]);
1816                 }
1817         }
1818         $matches = false;
1819         $cnt = preg_match_all('|\@\[url\=(.*?)\](.*?)\[\/url\]|',$item['tag'],$matches);
1820         if ($cnt) {
1821                 for($x = 0; $x < $cnt; $x ++) {
1822                         if ($matches[1][$x])
1823                                 $ret[] = array('@',$matches[1][$x], $matches[2][$x]);
1824                 }
1825         }
1826         return $ret;
1827 }
1828
1829 function item_expire($uid, $days, $network = "", $force = false) {
1830
1831         if ((! $uid) || ($days < 1))
1832                 return;
1833
1834         // $expire_network_only = save your own wall posts
1835         // and just expire conversations started by others
1836
1837         $expire_network_only = get_pconfig($uid,'expire','network_only');
1838         $sql_extra = ((intval($expire_network_only)) ? " AND wall = 0 " : "");
1839
1840         if ($network != "") {
1841                 $sql_extra .= sprintf(" AND network = '%s' ", dbesc($network));
1842                 // There is an index "uid_network_received" but not "uid_network_created"
1843                 // This avoids the creation of another index just for one purpose.
1844                 // And it doesn't really matter wether to look at "received" or "created"
1845                 $range = "AND `received` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
1846         } else
1847                 $range = "AND `created` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
1848
1849         $r = q("SELECT `file`, `resource-id`, `starred`, `type`, `id` FROM `item`
1850                 WHERE `uid` = %d $range
1851                 AND `id` = `parent`
1852                 $sql_extra
1853                 AND `deleted` = 0",
1854                 intval($uid),
1855                 intval($days)
1856         );
1857
1858         if (! dbm::is_result($r))
1859                 return;
1860
1861         $expire_items = get_pconfig($uid, 'expire','items');
1862         $expire_items = (($expire_items===false)?1:intval($expire_items)); // default if not set: 1
1863
1864         // Forcing expiring of items - but not notes and marked items
1865         if ($force)
1866                 $expire_items = true;
1867
1868         $expire_notes = get_pconfig($uid, 'expire','notes');
1869         $expire_notes = (($expire_notes===false)?1:intval($expire_notes)); // default if not set: 1
1870
1871         $expire_starred = get_pconfig($uid, 'expire','starred');
1872         $expire_starred = (($expire_starred===false)?1:intval($expire_starred)); // default if not set: 1
1873
1874         $expire_photos = get_pconfig($uid, 'expire','photos');
1875         $expire_photos = (($expire_photos===false)?0:intval($expire_photos)); // default if not set: 0
1876
1877         logger('expire: # items=' . count($r). "; expire items: $expire_items, expire notes: $expire_notes, expire starred: $expire_starred, expire photos: $expire_photos");
1878
1879         foreach($r as $item) {
1880
1881                 // don't expire filed items
1882
1883                 if (strpos($item['file'],'[') !== false)
1884                         continue;
1885
1886                 // Only expire posts, not photos and photo comments
1887
1888                 if ($expire_photos==0 && strlen($item['resource-id']))
1889                         continue;
1890                 if ($expire_starred==0 && intval($item['starred']))
1891                         continue;
1892                 if ($expire_notes==0 && $item['type']=='note')
1893                         continue;
1894                 if ($expire_items==0 && $item['type']!='note')
1895                         continue;
1896
1897                 drop_item($item['id'],false);
1898         }
1899
1900         proc_run(PRIORITY_HIGH,"include/notifier.php", "expire", $uid);
1901
1902 }
1903
1904
1905 function drop_items($items) {
1906         $uid = 0;
1907
1908         if (! local_user() && ! remote_user())
1909                 return;
1910
1911         if (count($items)) {
1912                 foreach($items as $item) {
1913                         $owner = drop_item($item,false);
1914                         if ($owner && ! $uid)
1915                                 $uid = $owner;
1916                 }
1917         }
1918
1919         // multiple threads may have been deleted, send an expire notification
1920
1921         if ($uid)
1922                 proc_run(PRIORITY_HIGH,"include/notifier.php", "expire", $uid);
1923 }
1924
1925
1926 function drop_item($id,$interactive = true) {
1927
1928         $a = get_app();
1929
1930         // locate item to be deleted
1931
1932         $r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1",
1933                 intval($id)
1934         );
1935
1936         if (! dbm::is_result($r)) {
1937                 if (! $interactive)
1938                         return 0;
1939                 notice( t('Item not found.') . EOL);
1940                 goaway(App::get_baseurl() . '/' . $_SESSION['return_url']);
1941         }
1942
1943         $item = $r[0];
1944
1945         $owner = $item['uid'];
1946
1947         $contact_id = 0;
1948
1949         // check if logged in user is either the author or owner of this item
1950
1951         if (is_array($_SESSION['remote'])) {
1952                 foreach($_SESSION['remote'] as $visitor) {
1953                         if ($visitor['uid'] == $item['uid'] && $visitor['cid'] == $item['contact-id']) {
1954                                 $contact_id = $visitor['cid'];
1955                                 break;
1956                         }
1957                 }
1958         }
1959
1960
1961         if ((local_user() == $item['uid']) || ($contact_id) || (! $interactive)) {
1962
1963                 // Check if we should do HTML-based delete confirmation
1964                 if ($_REQUEST['confirm']) {
1965                         // <form> can't take arguments in its "action" parameter
1966                         // so add any arguments as hidden inputs
1967                         $query = explode_querystring($a->query_string);
1968                         $inputs = array();
1969                         foreach($query['args'] as $arg) {
1970                                 if (strpos($arg, 'confirm=') === false) {
1971                                         $arg_parts = explode('=', $arg);
1972                                         $inputs[] = array('name' => $arg_parts[0], 'value' => $arg_parts[1]);
1973                                 }
1974                         }
1975
1976                         return replace_macros(get_markup_template('confirm.tpl'), array(
1977                                 '$method' => 'get',
1978                                 '$message' => t('Do you really want to delete this item?'),
1979                                 '$extra_inputs' => $inputs,
1980                                 '$confirm' => t('Yes'),
1981                                 '$confirm_url' => $query['base'],
1982                                 '$confirm_name' => 'confirmed',
1983                                 '$cancel' => t('Cancel'),
1984                         ));
1985                 }
1986                 // Now check how the user responded to the confirmation query
1987                 if ($_REQUEST['canceled']) {
1988                         goaway(App::get_baseurl() . '/' . $_SESSION['return_url']);
1989                 }
1990
1991                 logger('delete item: ' . $item['id'], LOGGER_DEBUG);
1992                 // delete the item
1993
1994                 $r = q("UPDATE `item` SET `deleted` = 1, `title` = '', `body` = '', `edited` = '%s', `changed` = '%s' WHERE `id` = %d",
1995                         dbesc(datetime_convert()),
1996                         dbesc(datetime_convert()),
1997                         intval($item['id'])
1998                 );
1999                 create_tags_from_item($item['id']);
2000                 create_files_from_item($item['id']);
2001                 delete_thread($item['id'], $item['parent-uri']);
2002
2003                 // clean up categories and tags so they don't end up as orphans
2004
2005                 $matches = false;
2006                 $cnt = preg_match_all('/<(.*?)>/',$item['file'],$matches,PREG_SET_ORDER);
2007                 if ($cnt) {
2008                         foreach($matches as $mtch) {
2009                                 file_tag_unsave_file($item['uid'],$item['id'],$mtch[1],true);
2010                         }
2011                 }
2012
2013                 $matches = false;
2014
2015                 $cnt = preg_match_all('/\[(.*?)\]/',$item['file'],$matches,PREG_SET_ORDER);
2016                 if ($cnt) {
2017                         foreach($matches as $mtch) {
2018                                 file_tag_unsave_file($item['uid'],$item['id'],$mtch[1],false);
2019                         }
2020                 }
2021
2022                 // If item is a link to a photo resource, nuke all the associated photos
2023                 // (visitors will not have photo resources)
2024                 // This only applies to photos uploaded from the photos page. Photos inserted into a post do not
2025                 // generate a resource-id and therefore aren't intimately linked to the item.
2026
2027                 if (strlen($item['resource-id'])) {
2028                         q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `uid` = %d ",
2029                                 dbesc($item['resource-id']),
2030                                 intval($item['uid'])
2031                         );
2032                         // ignore the result
2033                 }
2034
2035                 // If item is a link to an event, nuke the event record.
2036
2037                 if (intval($item['event-id'])) {
2038                         q("DELETE FROM `event` WHERE `id` = %d AND `uid` = %d",
2039                                 intval($item['event-id']),
2040                                 intval($item['uid'])
2041                         );
2042                         // ignore the result
2043                 }
2044
2045                 // If item has attachments, drop them
2046
2047                 foreach(explode(",",$item['attach']) as $attach){
2048                         preg_match("|attach/(\d+)|", $attach, $matches);
2049                         q("DELETE FROM `attach` WHERE `id` = %d AND `uid` = %d",
2050                                 intval($matches[1]),
2051                                 local_user()
2052                         );
2053                         // ignore the result
2054                 }
2055
2056
2057                 // clean up item_id and sign meta-data tables
2058
2059                 /*
2060                 // Old code - caused very long queries and warning entries in the mysql logfiles:
2061
2062                 $r = q("DELETE FROM item_id where iid in (select id from item where parent = %d and uid = %d)",
2063                         intval($item['id']),
2064                         intval($item['uid'])
2065                 );
2066
2067                 $r = q("DELETE FROM sign where iid in (select id from item where parent = %d and uid = %d)",
2068                         intval($item['id']),
2069                         intval($item['uid'])
2070                 );
2071                 */
2072
2073                 // The new code splits the queries since the mysql optimizer really has bad problems with subqueries
2074
2075                 // Creating list of parents
2076                 $r = q("select id from item where parent = %d and uid = %d",
2077                         intval($item['id']),
2078                         intval($item['uid'])
2079                 );
2080
2081                 $parentid = "";
2082
2083                 foreach ($r AS $row) {
2084                         if ($parentid != "")
2085                                 $parentid .= ", ";
2086
2087                         $parentid .= $row["id"];
2088                 }
2089
2090                 // Now delete them
2091                 if ($parentid != "") {
2092                         $r = q("DELETE FROM item_id where iid in (%s)", dbesc($parentid));
2093
2094                         $r = q("DELETE FROM sign where iid in (%s)", dbesc($parentid));
2095                 }
2096
2097                 // If it's the parent of a comment thread, kill all the kids
2098
2099                 if ($item['uri'] == $item['parent-uri']) {
2100                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '' , `title` = ''
2101                                 WHERE `parent-uri` = '%s' AND `uid` = %d ",
2102                                 dbesc(datetime_convert()),
2103                                 dbesc(datetime_convert()),
2104                                 dbesc($item['parent-uri']),
2105                                 intval($item['uid'])
2106                         );
2107                         create_tags_from_itemuri($item['parent-uri'], $item['uid']);
2108                         create_files_from_itemuri($item['parent-uri'], $item['uid']);
2109                         delete_thread_uri($item['parent-uri'], $item['uid']);
2110                         // ignore the result
2111                 } else {
2112                         // ensure that last-child is set in case the comment that had it just got wiped.
2113                         q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent-uri` = '%s' AND `uid` = %d ",
2114                                 dbesc(datetime_convert()),
2115                                 dbesc($item['parent-uri']),
2116                                 intval($item['uid'])
2117                         );
2118                         // who is the last child now?
2119                         $r = q("SELECT `id` FROM `item` WHERE `parent-uri` = '%s' AND `type` != 'activity' AND `deleted` = 0 AND `uid` = %d ORDER BY `edited` DESC LIMIT 1",
2120                                 dbesc($item['parent-uri']),
2121                                 intval($item['uid'])
2122                         );
2123                         if (dbm::is_result($r)) {
2124                                 q("UPDATE `item` SET `last-child` = 1 WHERE `id` = %d",
2125                                         intval($r[0]['id'])
2126                                 );
2127                         }
2128                 }
2129
2130                 $drop_id = intval($item['id']);
2131
2132                 // send the notification upstream/downstream as the case may be
2133
2134                 proc_run(PRIORITY_HIGH,"include/notifier.php", "drop", $drop_id);
2135
2136                 if (! $interactive)
2137                         return $owner;
2138                 goaway(App::get_baseurl() . '/' . $_SESSION['return_url']);
2139                 //NOTREACHED
2140         } else {
2141                 if (! $interactive)
2142                         return 0;
2143                 notice( t('Permission denied.') . EOL);
2144                 goaway(App::get_baseurl() . '/' . $_SESSION['return_url']);
2145                 //NOTREACHED
2146         }
2147
2148 }
2149
2150
2151 function first_post_date($uid,$wall = false) {
2152         $r = q("select id, created from item
2153                 where uid = %d and wall = %d and deleted = 0 and visible = 1 AND moderated = 0
2154                 and id = parent
2155                 order by created asc limit 1",
2156                 intval($uid),
2157                 intval($wall ? 1 : 0)
2158         );
2159         if (dbm::is_result($r)) {
2160 //              logger('first_post_date: ' . $r[0]['id'] . ' ' . $r[0]['created'], LOGGER_DATA);
2161                 return substr(datetime_convert('',date_default_timezone_get(),$r[0]['created']),0,10);
2162         }
2163         return false;
2164 }
2165
2166 /* modified posted_dates() {below} to arrange the list in years */
2167 function list_post_dates($uid, $wall) {
2168         $dnow = datetime_convert('',date_default_timezone_get(),'now','Y-m-d');
2169
2170         $dthen = first_post_date($uid, $wall);
2171         if (! $dthen)
2172                 return array();
2173
2174         // Set the start and end date to the beginning of the month
2175         $dnow = substr($dnow,0,8).'01';
2176         $dthen = substr($dthen,0,8).'01';
2177
2178         $ret = array();
2179
2180         // Starting with the current month, get the first and last days of every
2181         // month down to and including the month of the first post
2182         while(substr($dnow, 0, 7) >= substr($dthen, 0, 7)) {
2183                 $dyear = intval(substr($dnow,0,4));
2184                 $dstart = substr($dnow,0,8) . '01';
2185                 $dend = substr($dnow,0,8) . get_dim(intval($dnow),intval(substr($dnow,5)));
2186                 $start_month = datetime_convert('','',$dstart,'Y-m-d');
2187                 $end_month = datetime_convert('','',$dend,'Y-m-d');
2188                 $str = day_translate(datetime_convert('','',$dnow,'F'));
2189                 if (! $ret[$dyear])
2190                         $ret[$dyear] = array();
2191                 $ret[$dyear][] = array($str,$end_month,$start_month);
2192                 $dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
2193         }
2194         return $ret;
2195 }
2196
2197 function posted_dates($uid,$wall) {
2198         $dnow = datetime_convert('',date_default_timezone_get(),'now','Y-m-d');
2199
2200         $dthen = first_post_date($uid,$wall);
2201         if (! $dthen)
2202                 return array();
2203
2204         // Set the start and end date to the beginning of the month
2205         $dnow = substr($dnow,0,8).'01';
2206         $dthen = substr($dthen,0,8).'01';
2207
2208         $ret = array();
2209         // Starting with the current month, get the first and last days of every
2210         // month down to and including the month of the first post
2211         while(substr($dnow, 0, 7) >= substr($dthen, 0, 7)) {
2212                 $dstart = substr($dnow,0,8) . '01';
2213                 $dend = substr($dnow,0,8) . get_dim(intval($dnow),intval(substr($dnow,5)));
2214                 $start_month = datetime_convert('','',$dstart,'Y-m-d');
2215                 $end_month = datetime_convert('','',$dend,'Y-m-d');
2216                 $str = day_translate(datetime_convert('','',$dnow,'F Y'));
2217                 $ret[] = array($str,$end_month,$start_month);
2218                 $dnow = datetime_convert('','',$dnow . ' -1 month', 'Y-m-d');
2219         }
2220         return $ret;
2221 }
2222
2223
2224 function posted_date_widget($url,$uid,$wall) {
2225         $o = '';
2226
2227         if (! feature_enabled($uid,'archives'))
2228                 return $o;
2229
2230         // For former Facebook folks that left because of "timeline"
2231
2232 /*      if ($wall && intval(get_pconfig($uid,'system','no_wall_archive_widget')))
2233                 return $o;*/
2234
2235         $visible_years = get_pconfig($uid,'system','archive_visible_years');
2236         if (! $visible_years)
2237                 $visible_years = 5;
2238
2239         $ret = list_post_dates($uid,$wall);
2240
2241         if (! dbm::is_result($ret))
2242                 return $o;
2243
2244         $cutoff_year = intval(datetime_convert('',date_default_timezone_get(),'now','Y')) - $visible_years;
2245         $cutoff = ((array_key_exists($cutoff_year,$ret))? true : false);
2246
2247         $o = replace_macros(get_markup_template('posted_date_widget.tpl'),array(
2248                 '$title' => t('Archives'),
2249                 '$size' => $visible_years,
2250                 '$cutoff_year' => $cutoff_year,
2251                 '$cutoff' => $cutoff,
2252                 '$url' => $url,
2253                 '$dates' => $ret,
2254                 '$showmore' => t('show more')
2255
2256         ));
2257         return $o;
2258 }