include/functions.php

   1 <?php
   2         define('EXPECTED_CONFIG_VERSION', 26);
   3         define('SCHEMA_VERSION', 102);
   4
   5         $fetch_last_error = false;
   6         $pluginhost = false;
   7
   8         function __autoload($class) {
   9                 $class_file = str_replace("_", "/", strtolower(basename($class)));
  10
  11                 $file = dirname(__FILE__)."/../classes/$class_file.php";
  12
  13                 if (file_exists($file)) {
  14                         require $file;
  15                 }
  16
  17         }
  18
  19         mb_internal_encoding("UTF-8");
  20         date_default_timezone_set('UTC');
  21         if (defined('E_DEPRECATED')) {
  22                 error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
  23         } else {
  24                 error_reporting(E_ALL & ~E_NOTICE);
  25         }
  26
  27         require_once 'config.php';
  28
  29         if (DB_TYPE == "pgsql") {
  30                 define('SUBSTRING_FOR_DATE', 'SUBSTRING_FOR_DATE');
  31         } else {
  32                 define('SUBSTRING_FOR_DATE', 'SUBSTRING');
  33         }
  34
  35         define('THEME_VERSION_REQUIRED', 1.1);
  36
  37         /**
  38          * Return available translations names.
  39          *
  40          * @access public
  41          * @return array A array of available translations.
  42          */
  43         function get_translations() {
  44                 $tr = array(
  45                                         "auto"  => "Detect automatically",
  46                                         "ca_CA" => "Català",
  47                                         "en_US" => "English",
  48                                         "es_ES" => "Español",
  49                                         "de_DE" => "Deutsch",
  50                                         "fr_FR" => "Français",
  51                                         "hu_HU" => "Magyar (Hungarian)",
  52                                         "it_IT" => "Italiano",
  53                                         "ja_JP" => "日本語 (Japanese)",
  54                                         "nb_NO" => "Norwegian bokmål",
  55                                         "pl_PL" => "Polski",
  56                                         "ru_RU" => "Русский",
  57                                         "pt_BR" => "Portuguese/Brazil",
  58                                         "zh_CN" => "Simplified Chinese");
  59
  60                 return $tr;
  61         }
  62
  63         require_once "lib/accept-to-gettext.php";
  64         require_once "lib/gettext/gettext.inc";
  65
  66         function startup_gettext() {
  67
  68                 # Get locale from Accept-Language header
  69                 $lang = al2gt(array_keys(get_translations()), "text/html");
  70
  71                 if (defined('_TRANSLATION_OVERRIDE_DEFAULT')) {
  72                         $lang = _TRANSLATION_OVERRIDE_DEFAULT;
  73                 }
  74
  75                 /* In login action of mobile version */
  76                 if ($_POST["language"] && defined('MOBILE_VERSION')) {
  77                         $lang = $_POST["language"];
  78                 } else {
  79                         $lang = $_SESSION["language"];
  80                 }
  81
  82                 if ($lang) {
  83                         if (defined('LC_MESSAGES')) {
  84                                 _setlocale(LC_MESSAGES, $lang);
  85                         } else if (defined('LC_ALL')) {
  86                                 _setlocale(LC_ALL, $lang);
  87                         }
  88
  89                         if (defined('MOBILE_VERSION')) {
  90                                 _bindtextdomain("messages", "../locale");
  91                         } else {
  92                                 _bindtextdomain("messages", "locale");
  93                         }
  94
  95                         _textdomain("messages");
  96                         _bind_textdomain_codeset("messages", "UTF-8");
  97                 }
  98         }
  99
 100         startup_gettext();
 101
 102         require_once 'db-prefs.php';
 103         require_once 'version.php';
 104
 105         ini_set('user_agent', SELF_USER_AGENT);
 106
 107         require_once 'lib/pubsubhubbub/publisher.php';
 108         require_once 'lib/htmLawed.php';
 109
 110         $tz_offset = -1;
 111         $utc_tz = new DateTimeZone('UTC');
 112         $schema_version = false;
 113
 114         /**
 115          * Print a timestamped debug message.
 116          *
 117          * @param string $msg The debug message.
 118          * @return void
 119          */
 120         function _debug($msg) {
 121                 if (defined('QUIET') && QUIET) {
 122                         return;
 123                 }
 124                 $ts = strftime("%H:%M:%S", time());
 125                 if (function_exists('posix_getpid')) {
 126                         $ts = "$ts/" . posix_getpid();
 127                 }
 128                 print "[$ts] $msg\n";
 129         } // function _debug
 130
 131         /**
 132          * Purge a feed old posts.
 133          *
 134          * @param mixed $link A database connection.
 135          * @param mixed $feed_id The id of the purged feed.
 136          * @param mixed $purge_interval Olderness of purged posts.
 137          * @param boolean $debug Set to True to enable the debug. False by default.
 138          * @access public
 139          * @return void
 140          */
 141         function purge_feed($link, $feed_id, $purge_interval, $debug = false) {
 142
 143                 if (!$purge_interval) $purge_interval = feed_purge_interval($link, $feed_id);
 144
 145                 $rows = -1;
 146
 147                 $result = db_query($link,
 148                         "SELECT owner_uid FROM ttrss_feeds WHERE id = '$feed_id'");
 149
 150                 $owner_uid = false;
 151
 152                 if (db_num_rows($result) == 1) {
 153                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 154                 }
 155
 156                 if ($purge_interval == -1 || !$purge_interval) {
 157                         if ($owner_uid) {
 158                                 ccache_update($link, $feed_id, $owner_uid);
 159                         }
 160                         return;
 161                 }
 162
 163                 if (!$owner_uid) return;
 164
 165                 if (FORCE_ARTICLE_PURGE == 0) {
 166                         $purge_unread = get_pref($link, "PURGE_UNREAD_ARTICLES",
 167                                 $owner_uid, false);
 168                 } else {
 169                         $purge_unread = true;
 170                         $purge_interval = FORCE_ARTICLE_PURGE;
 171                 }
 172
 173                 if (!$purge_unread) $query_limit = " unread = false AND ";
 174
 175                 if (DB_TYPE == "pgsql") {
 176                         $pg_version = get_pgsql_version($link);
 177
 178                         if (preg_match("/^7\./", $pg_version) || preg_match("/^8\.0/", $pg_version)) {
 179
 180                                 $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 181                                         ttrss_entries.id = ref_id AND
 182                                         marked = false AND
 183                                         feed_id = '$feed_id' AND
 184                                         $query_limit
 185                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 186
 187                         } else {
 188
 189                                 $result = db_query($link, "DELETE FROM ttrss_user_entries
 190                                         USING ttrss_entries
 191                                         WHERE ttrss_entries.id = ref_id AND
 192                                         marked = false AND
 193                                         feed_id = '$feed_id' AND
 194                                         $query_limit
 195                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 196                         }
 197
 198                         $rows = pg_affected_rows($result);
 199
 200                 } else {
 201
 202 /*                      $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 203                                 marked = false AND feed_id = '$feed_id' AND
 204                                 (SELECT date_updated FROM ttrss_entries WHERE
 205                                         id = ref_id) < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)"); */
 206
 207                         $result = db_query($link, "DELETE FROM ttrss_user_entries
 208                                 USING ttrss_user_entries, ttrss_entries
 209                                 WHERE ttrss_entries.id = ref_id AND
 210                                 marked = false AND
 211                                 feed_id = '$feed_id' AND
 212                                 $query_limit
 213                                 ttrss_entries.date_updated < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)");
 214
 215                         $rows = mysql_affected_rows($link);
 216
 217                 }
 218
 219                 ccache_update($link, $feed_id, $owner_uid);
 220
 221                 if ($debug) {
 222                         _debug("Purged feed $feed_id ($purge_interval): deleted $rows articles");
 223                 }
 224         } // function purge_feed
 225
 226         function feed_purge_interval($link, $feed_id) {
 227
 228                 $result = db_query($link, "SELECT purge_interval, owner_uid FROM ttrss_feeds
 229                         WHERE id = '$feed_id'");
 230
 231                 if (db_num_rows($result) == 1) {
 232                         $purge_interval = db_fetch_result($result, 0, "purge_interval");
 233                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 234
 235                         if ($purge_interval == 0) $purge_interval = get_pref($link,
 236                                 'PURGE_OLD_DAYS', $owner_uid);
 237
 238                         return $purge_interval;
 239
 240                 } else {
 241                         return -1;
 242                 }
 243         }
 244
 245         function purge_orphans($link, $do_output = false) {
 246
 247                 // purge orphaned posts in main content table
 248                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
 249                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
 250
 251                 if ($do_output) {
 252                         $rows = db_affected_rows($link, $result);
 253                         _debug("Purged $rows orphaned posts.");
 254                 }
 255         }
 256
 257         function get_feed_update_interval($link, $feed_id) {
 258                 $result = db_query($link, "SELECT owner_uid, update_interval FROM
 259                         ttrss_feeds WHERE id = '$feed_id'");
 260
 261                 if (db_num_rows($result) == 1) {
 262                         $update_interval = db_fetch_result($result, 0, "update_interval");
 263                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 264
 265                         if ($update_interval != 0) {
 266                                 return $update_interval;
 267                         } else {
 268                                 return get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $owner_uid, false);
 269                         }
 270
 271                 } else {
 272                         return -1;
 273                 }
 274         }
 275
 276         function fetch_file_contents($url, $type = false, $login = false, $pass = false, $post_query = false) {
 277                 $login = urlencode($login);
 278                 $pass = urlencode($pass);
 279
 280                 global $fetch_last_error;
 281
 282                 if (function_exists('curl_init') && !ini_get("open_basedir")) {
 283                         $ch = curl_init($url);
 284
 285                         curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 15);
 286                         curl_setopt($ch, CURLOPT_TIMEOUT, 45);
 287                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
 288                         curl_setopt($ch, CURLOPT_MAXREDIRS, 20);
 289                         curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
 290                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 291                         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 292                         curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 293                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 294                         curl_setopt($ch, CURLOPT_ENCODING , "gzip");
 295
 296                         if ($post_query) {
 297                                 curl_setopt($ch, CURLOPT_POST, true);
 298                                 curl_setopt($ch, CURLOPT_POSTFIELDS, $post_query);
 299                         }
 300
 301                         if ($login && $pass)
 302                                 curl_setopt($ch, CURLOPT_USERPWD, "$login:$pass");
 303
 304                         $contents = @curl_exec($ch);
 305
 306                         if ($contents === false) {
 307                                 $fetch_last_error = curl_error($ch);
 308                                 curl_close($ch);
 309                                 return false;
 310                         }
 311
 312                         $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 313                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 314                         curl_close($ch);
 315
 316                         if ($http_code != 200 || $type && strpos($content_type, "$type") === false) {
 317                                 return false;
 318                         }
 319
 320                         return $contents;
 321                 } else {
 322                         if ($login && $pass ){
 323                                 $url_parts = array();
 324
 325                                 preg_match("/(^[^:]*):\/\/(.*)/", $url, $url_parts);
 326
 327                                 if ($url_parts[1] && $url_parts[2]) {
 328                                         $url = $url_parts[1] . "://$login:$pass@" . $url_parts[2];
 329                                 }
 330                         }
 331
 332                         $data = @file_get_contents($url);
 333
 334                         if (!$data && function_exists('error_get_last')) {
 335                                 $error = error_get_last();
 336                                 $fetch_last_error = $error["message"];
 337                         }
 338                         return $data;
 339                 }
 340
 341         }
 342
 343         /**
 344          * Try to determine the favicon URL for a feed.
 345          * adapted from wordpress favicon plugin by Jeff Minard (http://thecodepro.com/)
 346          * http://dev.wp-plugins.org/file/favatars/trunk/favatars.php
 347          *
 348          * @param string $url A feed or page URL
 349          * @access public
 350          * @return mixed The favicon URL, or false if none was found.
 351          */
 352         function get_favicon_url($url) {
 353
 354                 $favicon_url = false;
 355
 356                 if ($html = @fetch_file_contents($url)) {
 357
 358                         libxml_use_internal_errors(true);
 359
 360                         $doc = new DOMDocument();
 361                         $doc->loadHTML($html);
 362                         $xpath = new DOMXPath($doc);
 363
 364                         $base = $xpath->query('/html/head/base');
 365                         foreach ($base as $b) {
 366                                 $url = $b->getAttribute("href");
 367                                 break;
 368                         }
 369
 370                         $entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon"]');
 371                         if (count($entries) > 0) {
 372                                 foreach ($entries as $entry) {
 373                                         $favicon_url = rewrite_relative_url($url, $entry->getAttribute("href"));
 374                                         break;
 375                                 }
 376                         }
 377                 }
 378
 379                 if (!$favicon_url)
 380                         $favicon_url = rewrite_relative_url($url, "/favicon.ico");
 381
 382                 return $favicon_url;
 383         } // function get_favicon_url
 384
 385         function check_feed_favicon($site_url, $feed, $link) {
 386 #               print "FAVICON [$site_url]: $favicon_url\n";
 387
 388                 $icon_file = ICONS_DIR . "/$feed.ico";
 389
 390                 if (!file_exists($icon_file)) {
 391                         $favicon_url = get_favicon_url($site_url);
 392
 393                         if ($favicon_url) {
 394                                 // Limiting to "image" type misses those served with text/plain
 395                                 $contents = fetch_file_contents($favicon_url); // , "image");
 396
 397                                 if ($contents) {
 398                                         // Crude image type matching.
 399                                         // Patterns gleaned from the file(1) source code.
 400                                         if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
 401                                                 // 0       string  \000\000\001\000        MS Windows icon resource
 402                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
 403                                         }
 404                                         elseif (preg_match('/^GIF8/', $contents)) {
 405                                                 // 0       string          GIF8            GIF image data
 406                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
 407                                         }
 408                                         elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
 409                                                 // 0       string          \x89PNG\x0d\x0a\x1a\x0a         PNG image data
 410                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
 411                                         }
 412                                         elseif (preg_match('/^\xff\xd8/', $contents)) {
 413                                                 // 0       beshort         0xffd8          JPEG image data
 414                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
 415                                         }
 416                                         else {
 417                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
 418                                                 $contents = "";
 419                                         }
 420                                 }
 421
 422                                 if ($contents) {
 423                                         $fp = @fopen($icon_file, "w");
 424
 425                                         if ($fp) {
 426                                                 fwrite($fp, $contents);
 427                                                 fclose($fp);
 428                                                 chmod($icon_file, 0644);
 429                                         }
 430                                 }
 431                         }
 432                 }
 433         }
 434
 435         function print_select($id, $default, $values, $attributes = "") {
 436                 print "<select name=\"$id\" id=\"$id\" $attributes>";
 437                 foreach ($values as $v) {
 438                         if ($v == $default)
 439                                 $sel = "selected=\"1\"";
 440                          else
 441                                 $sel = "";
 442
 443                         print "<option value=\"$v\" $sel>$v</option>";
 444                 }
 445                 print "</select>";
 446         }
 447
 448         function print_select_hash($id, $default, $values, $attributes = "") {
 449                 print "<select name=\"$id\" id='$id' $attributes>";
 450                 foreach (array_keys($values) as $v) {
 451                         if ($v == $default)
 452                                 $sel = 'selected="selected"';
 453                          else
 454                                 $sel = "";
 455
 456                         print "<option $sel value=\"$v\">".$values[$v]."</option>";
 457                 }
 458
 459                 print "</select>";
 460         }
 461
 462         function getmicrotime() {
 463                 list($usec, $sec) = explode(" ",microtime());
 464                 return ((float)$usec + (float)$sec);
 465         }
 466
 467         function print_radio($id, $default, $true_is, $values, $attributes = "") {
 468                 foreach ($values as $v) {
 469
 470                         if ($v == $default)
 471                                 $sel = "checked";
 472                          else
 473                                 $sel = "";
 474
 475                         if ($v == $true_is) {
 476                                 $sel .= " value=\"1\"";
 477                         } else {
 478                                 $sel .= " value=\"0\"";
 479                         }
 480
 481                         print "<input class=\"noborder\" dojoType=\"dijit.form.RadioButton\"
 482                                 type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 483
 484                 }
 485         }
 486
 487         function initialize_user_prefs($link, $uid, $profile = false) {
 488
 489                 $uid = db_escape_string($uid);
 490
 491                 if (!$profile) {
 492                         $profile = "NULL";
 493                         $profile_qpart = "AND profile IS NULL";
 494                 } else {
 495                         $profile_qpart = "AND profile = '$profile'";
 496                 }
 497
 498                 if (get_schema_version($link) < 63) $profile_qpart = "";
 499
 500                 db_query($link, "BEGIN");
 501
 502                 $result = db_query($link, "SELECT pref_name,def_value FROM ttrss_prefs");
 503
 504                 $u_result = db_query($link, "SELECT pref_name
 505                         FROM ttrss_user_prefs WHERE owner_uid = '$uid' $profile_qpart");
 506
 507                 $active_prefs = array();
 508
 509                 while ($line = db_fetch_assoc($u_result)) {
 510                         array_push($active_prefs, $line["pref_name"]);
 511                 }
 512
 513                 while ($line = db_fetch_assoc($result)) {
 514                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 515 //                              print "adding " . $line["pref_name"] . "<br>";
 516
 517                                 if (get_schema_version($link) < 63) {
 518                                         db_query($link, "INSERT INTO ttrss_user_prefs
 519                                                 (owner_uid,pref_name,value) VALUES
 520                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 521
 522                                 } else {
 523                                         db_query($link, "INSERT INTO ttrss_user_prefs
 524                                                 (owner_uid,pref_name,value, profile) VALUES
 525                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."', $profile)");
 526                                 }
 527
 528                         }
 529                 }
 530
 531                 db_query($link, "COMMIT");
 532
 533         }
 534
 535         function get_ssl_certificate_id() {
 536                 if ($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"]) {
 537                         return sha1($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"] .
 538                                 $_SERVER["REDIRECT_SSL_CLIENT_V_START"] .
 539                                 $_SERVER["REDIRECT_SSL_CLIENT_V_END"] .
 540                                 $_SERVER["REDIRECT_SSL_CLIENT_S_DN"]);
 541                 }
 542                 return "";
 543         }
 544
 545         function authenticate_user($link, $login, $password, $check_only = false) {
 546
 547                 if (!SINGLE_USER_MODE) {
 548
 549                         $user_id = false;
 550
 551                         global $pluginhost;
 552                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_AUTH_USER) as $plugin) {
 553
 554                                 $user_id = (int) $plugin->authenticate($login, $password);
 555
 556                                 if ($user_id) {
 557                                         $_SESSION["auth_module"] = strtolower(get_class($plugin));
 558                                         break;
 559                                 }
 560                         }
 561
 562                         if ($user_id && !$check_only) {
 563                                 $_SESSION["uid"] = $user_id;
 564
 565                                 $result = db_query($link, "SELECT login,access_level,pwd_hash FROM ttrss_users
 566                                         WHERE id = '$user_id'");
 567
 568                                 $_SESSION["name"] = db_fetch_result($result, 0, "login");
 569                                 $_SESSION["access_level"] = db_fetch_result($result, 0, "access_level");
 570                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 571
 572                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 573                                         $_SESSION["uid"]);
 574
 575                                 $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 576                                 $_SESSION["pwd_hash"] = db_fetch_result($result, 0, "pwd_hash");
 577
 578                                 $_SESSION["last_version_check"] = time();
 579
 580                                 initialize_user_prefs($link, $_SESSION["uid"]);
 581
 582                                 return true;
 583                         }
 584
 585                         return false;
 586
 587                 } else {
 588
 589                         $_SESSION["uid"] = 1;
 590                         $_SESSION["name"] = "admin";
 591                         $_SESSION["access_level"] = 10;
 592
 593                         $_SESSION["hide_hello"] = true;
 594                         $_SESSION["hide_logout"] = true;
 595
 596                         $_SESSION["auth_module"] = false;
 597
 598                         if (!$_SESSION["csrf_token"]) {
 599                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 600                         }
 601
 602                         $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 603
 604                         initialize_user_prefs($link, $_SESSION["uid"]);
 605
 606                         return true;
 607                 }
 608         }
 609
 610         function make_password($length = 8) {
 611
 612                 $password = "";
 613                 $possible = "0123456789abcdfghjkmnpqrstvwxyzABCDFGHJKMNPQRSTVWXYZ";
 614
 615         $i = 0;
 616
 617                 while ($i < $length) {
 618                         $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 619
 620                         if (!strstr($password, $char)) {
 621                                 $password .= $char;
 622                                 $i++;
 623                         }
 624                 }
 625                 return $password;
 626         }
 627
 628         // this is called after user is created to initialize default feeds, labels
 629         // or whatever else
 630
 631         // user preferences are checked on every login, not here
 632
 633         function initialize_user($link, $uid) {
 634
 635                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 636                         values ('$uid', 'Tiny Tiny RSS: New Releases',
 637                         'http://tt-rss.org/releases.rss')");
 638
 639                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 640                         values ('$uid', 'Tiny Tiny RSS: Forum',
 641                                 'http://tt-rss.org/forum/rss.php')");
 642         }
 643
 644         function logout_user() {
 645                 session_destroy();
 646                 if (isset($_COOKIE[session_name()])) {
 647                    setcookie(session_name(), '', time()-42000, '/');
 648                 }
 649         }
 650
 651         function validate_csrf($csrf_token) {
 652                 return $csrf_token == $_SESSION['csrf_token'];
 653         }
 654
 655         function validate_session($link) {
 656                 if (SINGLE_USER_MODE) return true;
 657
 658                 $check_ip = $_SESSION['ip_address'];
 659
 660                 switch (SESSION_CHECK_ADDRESS) {
 661                 case 0:
 662                         $check_ip = '';
 663                         break;
 664                 case 1:
 665                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 666                         break;
 667                 case 2:
 668                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.'));
 669                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 670                         break;
 671                 };
 672
 673                 if ($check_ip && strpos($_SERVER['REMOTE_ADDR'], $check_ip) !== 0) {
 674                         $_SESSION["login_error_msg"] =
 675                                 __("Session failed to validate (incorrect IP)");
 676                         return false;
 677                 }
 678
 679                 if ($_SESSION["ref_schema_version"] != get_schema_version($link, true))
 680                         return false;
 681
 682                 if ($_SESSION["uid"]) {
 683
 684                         $result = db_query($link,
 685                                 "SELECT pwd_hash FROM ttrss_users WHERE id = '".$_SESSION["uid"]."'");
 686
 687                         $pwd_hash = db_fetch_result($result, 0, "pwd_hash");
 688
 689                         if ($pwd_hash != $_SESSION["pwd_hash"]) {
 690                                 return false;
 691                         }
 692                 }
 693
 694 /*              if ($_SESSION["cookie_lifetime"] && $_SESSION["uid"]) {
 695
 696                         //print_r($_SESSION);
 697
 698                         if (time() > $_SESSION["cookie_lifetime"]) {
 699                                 return false;
 700                         }
 701                 } */
 702
 703                 return true;
 704         }
 705
 706         function load_user_plugins($link, $owner_uid) {
 707                 if ($owner_uid) {
 708                         $plugins = get_pref($link, "_ENABLED_PLUGINS", $owner_uid);
 709
 710                         global $pluginhost;
 711                         $pluginhost->load($plugins, $pluginhost::KIND_USER, $owner_uid);
 712
 713                         if (get_schema_version($link) > 100) {
 714                                 $pluginhost->load_data();
 715                         }
 716                 }
 717         }
 718
 719         function login_sequence($link, $login_form = 0) {
 720                 if (SINGLE_USER_MODE) {
 721                         authenticate_user($link, "admin", null);
 722                         load_user_plugins($link, $_SESSION["uid"]);
 723                 } else {
 724                         if (!$_SESSION["uid"] || !validate_session($link)) {
 725
 726                                 if (AUTH_AUTO_LOGIN && authenticate_user($link, null, null)) {
 727                                     $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 728                                 } else {
 729                                          authenticate_user($link, null, null, true);
 730                                 }
 731
 732                                 if (!$_SESSION["uid"]) render_login_form($link, $login_form);
 733
 734                         } else {
 735                                 /* bump login timestamp */
 736                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 737                                         $_SESSION["uid"]);
 738                         }
 739
 740                         if ($_SESSION["uid"] && $_SESSION["language"] && SESSION_COOKIE_LIFETIME > 0) {
 741                                 setcookie("ttrss_lang", $_SESSION["language"],
 742                                         time() + SESSION_COOKIE_LIFETIME);
 743                         }
 744
 745                         if ($_SESSION["uid"]) {
 746                                 load_user_plugins($link, $_SESSION["uid"]);
 747                         }
 748                 }
 749         }
 750
 751         function truncate_string($str, $max_len, $suffix = '&hellip;') {
 752                 if (mb_strlen($str, "utf-8") > $max_len - 3) {
 753                         return mb_substr($str, 0, $max_len, "utf-8") . $suffix;
 754                 } else {
 755                         return $str;
 756                 }
 757         }
 758
 759         function theme_image($link, $filename) {
 760                 if ($link) {
 761                         $theme_path = get_user_theme_path($link);
 762
 763                         if ($theme_path && is_file($theme_path.$filename)) {
 764                                 return $theme_path.$filename;
 765                         } else {
 766                                 return $filename;
 767                         }
 768                 } else {
 769                         return $filename;
 770                 }
 771         }
 772
 773         function get_user_theme($link) {
 774
 775                 if (get_schema_version($link) >= 63 && $_SESSION["uid"]) {
 776                         $theme_name = get_pref($link, "_THEME_ID");
 777                         if (is_dir("themes/$theme_name")) {
 778                                 return $theme_name;
 779                         } else {
 780                                 return '';
 781                         }
 782                 } else {
 783                         return '';
 784                 }
 785
 786         }
 787
 788         function get_user_theme_path($link) {
 789                 $theme_path = '';
 790
 791                 if (get_schema_version($link) >= 63 && $_SESSION["uid"]) {
 792                         $theme_name = get_pref($link, "_THEME_ID");
 793
 794                         if ($theme_name && is_dir("themes/$theme_name")) {
 795                                 $theme_path = "themes/$theme_name/";
 796                         } else {
 797                                 $theme_name = '';
 798                         }
 799                 } else {
 800                         $theme_path = '';
 801                 }
 802
 803                 if ($theme_path) {
 804                         if (is_file("$theme_path/theme.ini")) {
 805                                 $ini = parse_ini_file("$theme_path/theme.ini", true);
 806                                 if ($ini['theme']['version'] >= THEME_VERSION_REQUIRED) {
 807                                         return $theme_path;
 808                                 }
 809                         }
 810                 }
 811                 return '';
 812         }
 813
 814         function get_user_theme_options($link) {
 815                 $t = get_user_theme_path($link);
 816
 817                 if ($t) {
 818                         if (is_file("$t/theme.ini")) {
 819                                 $ini = parse_ini_file("$t/theme.ini", true);
 820                                 if ($ini['theme']['version']) {
 821                                         return $ini['theme']['options'];
 822                                 }
 823                         }
 824                 }
 825                 return '';
 826         }
 827
 828         function print_theme_includes($link) {
 829
 830                 $t = get_user_theme_path($link);
 831                 $time = time();
 832
 833                 if ($t) {
 834                         print "<link rel=\"stylesheet\" type=\"text/css\"
 835                                 href=\"$t/theme.css?$time \">";
 836                         if (file_exists("$t/theme.js")) {
 837                                 print "<script type=\"text/javascript\" src=\"$t/theme.js?$time\">
 838                                         </script>";
 839                         }
 840                 }
 841         }
 842
 843         function get_all_themes() {
 844                 $themes = glob("themes/*");
 845
 846                 asort($themes);
 847
 848                 $rv = array();
 849
 850                 foreach ($themes as $t) {
 851                         if (is_file("$t/theme.ini")) {
 852                                 $ini = parse_ini_file("$t/theme.ini", true);
 853                                 if ($ini['theme']['version'] >= THEME_VERSION_REQUIRED &&
 854                                                         !$ini['theme']['disabled']) {
 855                                         $entry = array();
 856                                         $entry["path"] = $t;
 857                                         $entry["base"] = basename($t);
 858                                         $entry["name"] = $ini['theme']['name'];
 859                                         $entry["version"] = $ini['theme']['version'];
 860                                         $entry["author"] = $ini['theme']['author'];
 861                                         $entry["options"] = $ini['theme']['options'];
 862                                         array_push($rv, $entry);
 863                                 }
 864                         }
 865                 }
 866
 867                 return $rv;
 868         }
 869
 870         function convert_timestamp($timestamp, $source_tz, $dest_tz) {
 871
 872                 try {
 873                         $source_tz = new DateTimeZone($source_tz);
 874                 } catch (Exception $e) {
 875                         $source_tz = new DateTimeZone('UTC');
 876                 }
 877
 878                 try {
 879                         $dest_tz = new DateTimeZone($dest_tz);
 880                 } catch (Exception $e) {
 881                         $dest_tz = new DateTimeZone('UTC');
 882                 }
 883
 884                 $dt = new DateTime(date('Y-m-d H:i:s', $timestamp), $source_tz);
 885                 return $dt->format('U') + $dest_tz->getOffset($dt);
 886         }
 887
 888         function make_local_datetime($link, $timestamp, $long, $owner_uid = false,
 889                                         $no_smart_dt = false) {
 890
 891                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 892                 if (!$timestamp) $timestamp = '1970-01-01 0:00';
 893
 894                 global $utc_tz;
 895                 global $tz_offset;
 896
 897                 # We store date in UTC internally
 898                 $dt = new DateTime($timestamp, $utc_tz);
 899
 900                 if ($tz_offset == -1) {
 901
 902                         $user_tz_string = get_pref($link, 'USER_TIMEZONE', $owner_uid);
 903
 904                         try {
 905                                 $user_tz = new DateTimeZone($user_tz_string);
 906                         } catch (Exception $e) {
 907                                 $user_tz = $utc_tz;
 908                         }
 909
 910                         $tz_offset = $user_tz->getOffset($dt);
 911                 }
 912
 913                 $user_timestamp = $dt->format('U') + $tz_offset;
 914
 915                 if (!$no_smart_dt) {
 916                         return smart_date_time($link, $user_timestamp,
 917                                 $tz_offset, $owner_uid);
 918                 } else {
 919                         if ($long)
 920                                 $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 921                         else
 922                                 $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 923
 924                         return date($format, $user_timestamp);
 925                 }
 926         }
 927
 928         function smart_date_time($link, $timestamp, $tz_offset = 0, $owner_uid = false) {
 929                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 930
 931                 if (date("Y.m.d", $timestamp) == date("Y.m.d", time() + $tz_offset)) {
 932                         return date("G:i", $timestamp);
 933                 } else if (date("Y", $timestamp) == date("Y", time() + $tz_offset)) {
 934                         $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 935                         return date($format, $timestamp);
 936                 } else {
 937                         $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 938                         return date($format, $timestamp);
 939                 }
 940         }
 941
 942         function sql_bool_to_bool($s) {
 943                 if ($s == "t" || $s == "1" || $s == "true") {
 944                         return true;
 945                 } else {
 946                         return false;
 947                 }
 948         }
 949
 950         function bool_to_sql_bool($s) {
 951                 if ($s) {
 952                         return "true";
 953                 } else {
 954                         return "false";
 955                 }
 956         }
 957
 958         // Session caching removed due to causing wrong redirects to upgrade
 959         // script when get_schema_version() is called on an obsolete session
 960         // created on a previous schema version.
 961         function get_schema_version($link, $nocache = false) {
 962                 global $schema_version;
 963
 964                 if (!$schema_version) {
 965                         $result = db_query($link, "SELECT schema_version FROM ttrss_version");
 966                         $version = db_fetch_result($result, 0, "schema_version");
 967                         $schema_version = $version;
 968                         return $version;
 969                 } else {
 970                         return $schema_version;
 971                 }
 972         }
 973
 974         function sanity_check($link) {
 975                 require_once 'errors.php';
 976
 977                 $error_code = 0;
 978                 $schema_version = get_schema_version($link, true);
 979
 980                 if ($schema_version != SCHEMA_VERSION) {
 981                         $error_code = 5;
 982                 }
 983
 984                 if (DB_TYPE == "mysql") {
 985                         $result = db_query($link, "SELECT true", false);
 986                         if (db_num_rows($result) != 1) {
 987                                 $error_code = 10;
 988                         }
 989                 }
 990
 991                 if (db_escape_string("testTEST") != "testTEST") {
 992                         $error_code = 12;
 993                 }
 994
 995                 return array("code" => $error_code, "message" => $ERRORS[$error_code]);
 996         }
 997
 998         function file_is_locked($filename) {
 999                 if (function_exists('flock')) {
1000                         $fp = @fopen(LOCK_DIRECTORY . "/$filename", "r");
1001                         if ($fp) {
1002                                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1003                                         flock($fp, LOCK_UN);
1004                                         fclose($fp);
1005                                         return false;
1006                                 }
1007                                 fclose($fp);
1008                                 return true;
1009                         } else {
1010                                 return false;
1011                         }
1012                 }
1013                 return true; // consider the file always locked and skip the test
1014         }
1015
1016         function make_lockfile($filename) {
1017                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
1018
1019                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1020                         if (function_exists('posix_getpid')) {
1021                                 fwrite($fp, posix_getpid() . "\n");
1022                         }
1023                         return $fp;
1024                 } else {
1025                         return false;
1026                 }
1027         }
1028
1029         function make_stampfile($filename) {
1030                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
1031
1032                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1033                         fwrite($fp, time() . "\n");
1034                         flock($fp, LOCK_UN);
1035                         fclose($fp);
1036                         return true;
1037                 } else {
1038                         return false;
1039                 }
1040         }
1041
1042         function sql_random_function() {
1043                 if (DB_TYPE == "mysql") {
1044                         return "RAND()";
1045                 } else {
1046                         return "RANDOM()";
1047                 }
1048         }
1049
1050         function catchup_feed($link, $feed, $cat_view, $owner_uid = false, $max_id = false) {
1051
1052                         if (!$owner_uid) $owner_uid = $_SESSION['uid'];
1053
1054                         //if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
1055
1056                         $ref_check_qpart = ($max_id &&
1057                                 !get_pref($link, 'REVERSE_HEADLINES')) ? "ref_id <= '$max_id'" : "true";
1058
1059                         if (is_numeric($feed)) {
1060                                 if ($cat_view) {
1061
1062                                         if ($feed >= 0) {
1063
1064                                                 if ($feed > 0) {
1065                                                         $children = getChildCategories($link, $feed, $owner_uid);
1066                                                         array_push($children, $feed);
1067
1068                                                         $children = join(",", $children);
1069
1070                                                         $cat_qpart = "cat_id IN ($children)";
1071                                                 } else {
1072                                                         $cat_qpart = "cat_id IS NULL";
1073                                                 }
1074
1075                                                 db_query($link, "UPDATE ttrss_user_entries
1076                                                         SET unread = false,last_read = NOW()
1077                                                         WHERE feed_id IN (SELECT id FROM ttrss_feeds WHERE $cat_qpart)
1078                                                         AND $ref_check_qpart
1079                                                         AND owner_uid = $owner_uid");
1080
1081                                         } else if ($feed == -2) {
1082
1083                                                 db_query($link, "UPDATE ttrss_user_entries
1084                                                         SET unread = false,last_read = NOW() WHERE (SELECT COUNT(*)
1085                                                                 FROM ttrss_user_labels2 WHERE article_id = ref_id) > 0
1086                                                                 AND $ref_check_qpart
1087                                                                 AND unread = true AND owner_uid = $owner_uid");
1088                                         }
1089
1090                                 } else if ($feed > 0) {
1091
1092                                         db_query($link, "UPDATE ttrss_user_entries
1093                                                         SET unread = false,last_read = NOW()
1094                                                         WHERE feed_id = '$feed'
1095                                                         AND $ref_check_qpart
1096                                                         AND owner_uid = $owner_uid");
1097
1098                                 } else if ($feed < 0 && $feed > -10) { // special, like starred
1099
1100                                         if ($feed == -1) {
1101                                                 db_query($link, "UPDATE ttrss_user_entries
1102                                                         SET unread = false,last_read = NOW()
1103                                                         WHERE marked = true
1104                                                         AND $ref_check_qpart
1105                                                         AND owner_uid = $owner_uid");
1106                                         }
1107
1108                                         if ($feed == -2) {
1109                                                 db_query($link, "UPDATE ttrss_user_entries
1110                                                         SET unread = false,last_read = NOW()
1111                                                         WHERE published = true
1112                                                         AND $ref_check_qpart
1113                                                         AND owner_uid = $owner_uid");
1114                                         }
1115
1116                                         if ($feed == -3) {
1117
1118                                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE");
1119
1120                                                 if (DB_TYPE == "pgsql") {
1121                                                         $match_part = "updated > NOW() - INTERVAL '$intl hour' ";
1122                                                 } else {
1123                                                         $match_part = "updated > DATE_SUB(NOW(),
1124                                                                 INTERVAL $intl HOUR) ";
1125                                                 }
1126
1127                                                 $result = db_query($link, "SELECT id FROM ttrss_entries,
1128                                                         ttrss_user_entries WHERE $match_part AND
1129                                                         unread = true AND
1130                                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
1131                                                         owner_uid = $owner_uid");
1132
1133                                                 $affected_ids = array();
1134
1135                                                 while ($line = db_fetch_assoc($result)) {
1136                                                         array_push($affected_ids, $line["id"]);
1137                                                 }
1138
1139                                                 catchupArticlesById($link, $affected_ids, 0);
1140                                         }
1141
1142                                         if ($feed == -4) {
1143                                                 db_query($link, "UPDATE ttrss_user_entries
1144                                                         SET unread = false,last_read = NOW()
1145                                                         WHERE $ref_check_qpart AND owner_uid = $owner_uid");
1146                                         }
1147
1148                                 } else if ($feed < -10) { // label
1149
1150                                         $label_id = -$feed - 11;
1151
1152                                         db_query($link, "UPDATE ttrss_user_entries, ttrss_user_labels2
1153                                                 SET unread = false, last_read = NOW()
1154                                                         WHERE label_id = '$label_id' AND unread = true
1155                                                         AND $ref_check_qpart
1156                                                         AND owner_uid = '$owner_uid' AND ref_id = article_id");
1157
1158                                 }
1159
1160                                 ccache_update($link, $feed, $owner_uid, $cat_view);
1161
1162                         } else { // tag
1163                                 db_query($link, "BEGIN");
1164
1165                                 $tag_name = db_escape_string($feed);
1166
1167                                 $result = db_query($link, "SELECT post_int_id FROM ttrss_tags
1168                                         WHERE tag_name = '$tag_name' AND owner_uid = $owner_uid");
1169
1170                                 while ($line = db_fetch_assoc($result)) {
1171                                         db_query($link, "UPDATE ttrss_user_entries SET
1172                                                 unread = false, last_read = NOW()
1173                                                 WHERE $ref_check_qpart AND int_id = " . $line["post_int_id"]);
1174                                 }
1175                                 db_query($link, "COMMIT");
1176                         }
1177         }
1178
1179         function getAllCounters($link, $omode = "flc", $active_feed = false) {
1180
1181                 if (!$omode) $omode = "flc";
1182
1183                 $data = getGlobalCounters($link);
1184
1185                 $data = array_merge($data, getVirtCounters($link));
1186
1187                 if (strchr($omode, "l")) $data = array_merge($data, getLabelCounters($link));
1188                 if (strchr($omode, "f")) $data = array_merge($data, getFeedCounters($link, $active_feed));
1189                 if (strchr($omode, "t")) $data = array_merge($data, getTagCounters($link));
1190                 if (strchr($omode, "c")) $data = array_merge($data, getCategoryCounters($link));
1191
1192                 return $data;
1193         }
1194
1195         function getCategoryTitle($link, $cat_id) {
1196
1197                 if ($cat_id == -1) {
1198                         return __("Special");
1199                 } else if ($cat_id == -2) {
1200                         return __("Labels");
1201                 } else {
1202
1203                         $result = db_query($link, "SELECT title FROM ttrss_feed_categories WHERE
1204                                 id = '$cat_id'");
1205
1206                         if (db_num_rows($result) == 1) {
1207                                 return db_fetch_result($result, 0, "title");
1208                         } else {
1209                                 return __("Uncategorized");
1210                         }
1211                 }
1212         }
1213
1214
1215         function getCategoryCounters($link) {
1216                 $ret_arr = array();
1217
1218                 /* Labels category */
1219
1220                 $cv = array("id" => -2, "kind" => "cat",
1221                         "counter" => getCategoryUnread($link, -2));
1222
1223                 array_push($ret_arr, $cv);
1224
1225                 $result = db_query($link, "SELECT id AS cat_id, value AS unread,
1226                         (SELECT COUNT(id) FROM ttrss_feed_categories AS c2
1227                                 WHERE c2.parent_cat = ttrss_feed_categories.id) AS num_children
1228                         FROM ttrss_feed_categories, ttrss_cat_counters_cache
1229                         WHERE ttrss_cat_counters_cache.feed_id = id AND
1230                         ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid AND
1231                         ttrss_feed_categories.owner_uid = " . $_SESSION["uid"]);
1232
1233                 while ($line = db_fetch_assoc($result)) {
1234                         $line["cat_id"] = (int) $line["cat_id"];
1235
1236                         if ($line["num_children"] > 0) {
1237                                 $child_counter = getCategoryChildrenUnread($link, $line["cat_id"], $_SESSION["uid"]);
1238                         } else {
1239                                 $child_counter = 0;
1240                         }
1241
1242                         $cv = array("id" => $line["cat_id"], "kind" => "cat",
1243                                 "counter" => $line["unread"] + $child_counter);
1244
1245                         array_push($ret_arr, $cv);
1246                 }
1247
1248                 /* Special case: NULL category doesn't actually exist in the DB */
1249
1250                 $cv = array("id" => 0, "kind" => "cat",
1251                         "counter" => (int) ccache_find($link, 0, $_SESSION["uid"], true));
1252
1253                 array_push($ret_arr, $cv);
1254
1255                 return $ret_arr;
1256         }
1257
1258         // only accepts real cats (>= 0)
1259         function getCategoryChildrenUnread($link, $cat, $owner_uid = false) {
1260                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1261
1262                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories WHERE parent_cat = '$cat'
1263                                 AND owner_uid = $owner_uid");
1264
1265                 $unread = 0;
1266
1267                 while ($line = db_fetch_assoc($result)) {
1268                         $unread += getCategoryUnread($link, $line["id"], $owner_uid);
1269                         $unread += getCategoryChildrenUnread($link, $line["id"], $owner_uid);
1270                 }
1271
1272                 return $unread;
1273         }
1274
1275         function getCategoryUnread($link, $cat, $owner_uid = false) {
1276
1277                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1278
1279                 if ($cat >= 0) {
1280
1281                         if ($cat != 0) {
1282                                 $cat_query = "cat_id = '$cat'";
1283                         } else {
1284                                 $cat_query = "cat_id IS NULL";
1285                         }
1286
1287                         $result = db_query($link, "SELECT id FROM ttrss_feeds WHERE $cat_query
1288                                         AND owner_uid = " . $owner_uid);
1289
1290                         $cat_feeds = array();
1291                         while ($line = db_fetch_assoc($result)) {
1292                                 array_push($cat_feeds, "feed_id = " . $line["id"]);
1293                         }
1294
1295                         if (count($cat_feeds) == 0) return 0;
1296
1297                         $match_part = implode(" OR ", $cat_feeds);
1298
1299                         $result = db_query($link, "SELECT COUNT(int_id) AS unread
1300                                 FROM ttrss_user_entries
1301                                 WHERE   unread = true AND ($match_part)
1302                                 AND owner_uid = " . $owner_uid);
1303
1304                         $unread = 0;
1305
1306                         # this needs to be rewritten
1307                         while ($line = db_fetch_assoc($result)) {
1308                                 $unread += $line["unread"];
1309                         }
1310
1311                         return $unread;
1312                 } else if ($cat == -1) {
1313                         return getFeedUnread($link, -1) + getFeedUnread($link, -2) + getFeedUnread($link, -3) + getFeedUnread($link, 0);
1314                 } else if ($cat == -2) {
1315
1316                         $result = db_query($link, "
1317                                 SELECT COUNT(unread) AS unread FROM
1318                                         ttrss_user_entries, ttrss_user_labels2
1319                                 WHERE article_id = ref_id AND unread = true
1320                                         AND ttrss_user_entries.owner_uid = '$owner_uid'");
1321
1322                         $unread = db_fetch_result($result, 0, "unread");
1323
1324                         return $unread;
1325
1326                 }
1327         }
1328
1329         function getFeedUnread($link, $feed, $is_cat = false) {
1330                 return getFeedArticles($link, $feed, $is_cat, true, $_SESSION["uid"]);
1331         }
1332
1333         function getLabelUnread($link, $label_id, $owner_uid = false) {
1334                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1335
1336                 $result = db_query($link, "SELECT COUNT(ref_id) AS unread FROM ttrss_user_entries, ttrss_user_labels2
1337                         WHERE owner_uid = '$owner_uid' AND unread = true AND label_id = '$label_id' AND article_id = ref_id");
1338
1339                 if (db_num_rows($result) != 0) {
1340                         return db_fetch_result($result, 0, "unread");
1341                 } else {
1342                         return 0;
1343                 }
1344         }
1345
1346         function getFeedArticles($link, $feed, $is_cat = false, $unread_only = false,
1347                 $owner_uid = false) {
1348
1349                 $n_feed = (int) $feed;
1350                 $need_entries = false;
1351
1352                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1353
1354                 if ($unread_only) {
1355                         $unread_qpart = "unread = true";
1356                 } else {
1357                         $unread_qpart = "true";
1358                 }
1359
1360                 if ($is_cat) {
1361                         return getCategoryUnread($link, $n_feed, $owner_uid);
1362                 } else if ($n_feed == -6) {
1363                         return 0;
1364                 } else if ($feed != "0" && $n_feed == 0) {
1365
1366                         $feed = db_escape_string($feed);
1367
1368                         $result = db_query($link, "SELECT SUM((SELECT COUNT(int_id)
1369                                 FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1370                                         AND ref_id = id AND $unread_qpart)) AS count FROM ttrss_tags
1371                                 WHERE owner_uid = $owner_uid AND tag_name = '$feed'");
1372                         return db_fetch_result($result, 0, "count");
1373
1374                 } else if ($n_feed == -1) {
1375                         $match_part = "marked = true";
1376                 } else if ($n_feed == -2) {
1377                         $match_part = "published = true";
1378                 } else if ($n_feed == -3) {
1379                         $match_part = "unread = true AND score >= 0";
1380
1381                         $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
1382
1383                         if (DB_TYPE == "pgsql") {
1384                                 $match_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
1385                         } else {
1386                                 $match_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
1387                         }
1388
1389                         $need_entries = true;
1390
1391                 } else if ($n_feed == -4) {
1392                         $match_part = "true";
1393                 } else if ($n_feed >= 0) {
1394
1395                         if ($n_feed != 0) {
1396                                 $match_part = "feed_id = '$n_feed'";
1397                         } else {
1398                                 $match_part = "feed_id IS NULL";
1399                         }
1400
1401                 } else if ($feed < -10) {
1402
1403                         $label_id = -$feed - 11;
1404
1405                         return getLabelUnread($link, $label_id, $owner_uid);
1406
1407                 }
1408
1409                 if ($match_part) {
1410
1411                         if ($need_entries) {
1412                                 $from_qpart = "ttrss_user_entries,ttrss_entries";
1413                                 $from_where = "ttrss_entries.id = ttrss_user_entries.ref_id AND";
1414                         } else {
1415                                 $from_qpart = "ttrss_user_entries";
1416                         }
1417
1418                         $query = "SELECT count(int_id) AS unread
1419                                 FROM $from_qpart WHERE
1420                                 $unread_qpart AND $from_where ($match_part) AND ttrss_user_entries.owner_uid = $owner_uid";
1421
1422                         //echo "[$feed/$query]\n";
1423
1424                         $result = db_query($link, $query);
1425
1426                 } else {
1427
1428                         $result = db_query($link, "SELECT COUNT(post_int_id) AS unread
1429                                 FROM ttrss_tags,ttrss_user_entries,ttrss_entries
1430                                 WHERE tag_name = '$feed' AND post_int_id = int_id AND ref_id = ttrss_entries.id
1431                                 AND $unread_qpart AND ttrss_tags.owner_uid = " . $owner_uid);
1432                 }
1433
1434                 $unread = db_fetch_result($result, 0, "unread");
1435
1436                 return $unread;
1437         }
1438
1439         function getGlobalUnread($link, $user_id = false) {
1440
1441                 if (!$user_id) {
1442                         $user_id = $_SESSION["uid"];
1443                 }
1444
1445                 $result = db_query($link, "SELECT SUM(value) AS c_id FROM ttrss_counters_cache
1446                         WHERE owner_uid = '$user_id' AND feed_id > 0");
1447
1448                 $c_id = db_fetch_result($result, 0, "c_id");
1449
1450                 return $c_id;
1451         }
1452
1453         function getGlobalCounters($link, $global_unread = -1) {
1454                 $ret_arr = array();
1455
1456                 if ($global_unread == -1) {
1457                         $global_unread = getGlobalUnread($link);
1458                 }
1459
1460                 $cv = array("id" => "global-unread",
1461                         "counter" => (int) $global_unread);
1462
1463                 array_push($ret_arr, $cv);
1464
1465                 $result = db_query($link, "SELECT COUNT(id) AS fn FROM
1466                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1467
1468                 $subscribed_feeds = db_fetch_result($result, 0, "fn");
1469
1470                 $cv = array("id" => "subscribed-feeds",
1471                         "counter" => (int) $subscribed_feeds);
1472
1473                 array_push($ret_arr, $cv);
1474
1475                 return $ret_arr;
1476         }
1477
1478         function getTagCounters($link) {
1479
1480                 $ret_arr = array();
1481
1482                 $result = db_query($link, "SELECT tag_name,SUM((SELECT COUNT(int_id)
1483                         FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1484                                 AND ref_id = id AND unread = true)) AS count FROM ttrss_tags
1485                                 WHERE owner_uid = ".$_SESSION['uid']." GROUP BY tag_name
1486                                 ORDER BY count DESC LIMIT 55");
1487
1488                 $tags = array();
1489
1490                 while ($line = db_fetch_assoc($result)) {
1491                         $tags[$line["tag_name"]] += $line["count"];
1492                 }
1493
1494                 foreach (array_keys($tags) as $tag) {
1495                         $unread = $tags[$tag];
1496                         $tag = htmlspecialchars($tag);
1497
1498                         $cv = array("id" => $tag,
1499                                 "kind" => "tag",
1500                                 "counter" => $unread);
1501
1502                         array_push($ret_arr, $cv);
1503                 }
1504
1505                 return $ret_arr;
1506         }
1507
1508         function getVirtCounters($link) {
1509
1510                 $ret_arr = array();
1511
1512                 for ($i = 0; $i >= -4; $i--) {
1513
1514                         $count = getFeedUnread($link, $i);
1515
1516                         $cv = array("id" => $i,
1517                                 "counter" => (int) $count);
1518
1519 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1520 //                              $cv["xmsg"] = getFeedArticles($link, $i)." ".__("total");
1521
1522                         array_push($ret_arr, $cv);
1523                 }
1524
1525                 return $ret_arr;
1526         }
1527
1528         function getLabelCounters($link, $descriptions = false) {
1529
1530                 $ret_arr = array();
1531
1532                 $owner_uid = $_SESSION["uid"];
1533
1534                 $result = db_query($link, "SELECT id, caption FROM ttrss_labels2
1535                         WHERE owner_uid = '$owner_uid'");
1536
1537                 while ($line = db_fetch_assoc($result)) {
1538
1539                         $id = -$line["id"] - 11;
1540
1541                         $label_name = $line["caption"];
1542                         $count = getFeedUnread($link, $id);
1543
1544                         $cv = array("id" => $id,
1545                                 "counter" => (int) $count);
1546
1547                         if ($descriptions)
1548                                 $cv["description"] = $label_name;
1549
1550 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1551 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1552
1553                         array_push($ret_arr, $cv);
1554                 }
1555
1556                 return $ret_arr;
1557         }
1558
1559         function getFeedCounters($link, $active_feed = false) {
1560
1561                 $ret_arr = array();
1562
1563                 $query = "SELECT ttrss_feeds.id,
1564                                 ttrss_feeds.title,
1565                                 ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
1566                                 last_error, value AS count
1567                         FROM ttrss_feeds, ttrss_counters_cache
1568                         WHERE ttrss_feeds.owner_uid = ".$_SESSION["uid"]."
1569                                 AND ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid
1570                                 AND ttrss_counters_cache.feed_id = id";
1571
1572                 $result = db_query($link, $query);
1573                 $fctrs_modified = false;
1574
1575                 while ($line = db_fetch_assoc($result)) {
1576
1577                         $id = $line["id"];
1578                         $count = $line["count"];
1579                         $last_error = htmlspecialchars($line["last_error"]);
1580
1581                         $last_updated = make_local_datetime($link, $line['last_updated'], false);
1582
1583                         $has_img = feed_has_icon($id);
1584
1585                         if (date('Y') - date('Y', strtotime($line['last_updated'])) > 2)
1586                                 $last_updated = '';
1587
1588                         $cv = array("id" => $id,
1589                                 "updated" => $last_updated,
1590                                 "counter" => (int) $count,
1591                                 "has_img" => (int) $has_img);
1592
1593                         if ($last_error)
1594                                 $cv["error"] = $last_error;
1595
1596 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1597 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1598
1599                         if ($active_feed && $id == $active_feed)
1600                                 $cv["title"] = truncate_string($line["title"], 30);
1601
1602                         array_push($ret_arr, $cv);
1603
1604                 }
1605
1606                 return $ret_arr;
1607         }
1608
1609         function get_pgsql_version($link) {
1610                 $result = db_query($link, "SELECT version() AS version");
1611                 $version = explode(" ", db_fetch_result($result, 0, "version"));
1612                 return $version[1];
1613         }
1614
1615         /**
1616          * @return array (code => Status code, message => error message if available)
1617          *
1618          *                 0 - OK, Feed already exists
1619          *                 1 - OK, Feed added
1620          *                 2 - Invalid URL
1621          *                 3 - URL content is HTML, no feeds available
1622          *                 4 - URL content is HTML which contains multiple feeds.
1623          *                     Here you should call extractfeedurls in rpc-backend
1624          *                     to get all possible feeds.
1625          *                 5 - Couldn't download the URL content.
1626          */
1627         function subscribe_to_feed($link, $url, $cat_id = 0,
1628                         $auth_login = '', $auth_pass = '', $need_auth = false) {
1629
1630                 global $fetch_last_error;
1631
1632                 require_once "include/rssfuncs.php";
1633
1634                 $url = fix_url($url);
1635
1636                 if (!$url || !validate_feed_url($url)) return array("code" => 2);
1637
1638                 $contents = @fetch_file_contents($url, false, $auth_login, $auth_pass);
1639
1640                 if (!$contents) {
1641                         return array("code" => 5, "message" => $fetch_last_error);
1642                 }
1643
1644                 if (is_html($contents)) {
1645                         $feedUrls = get_feeds_from_html($url, $contents);
1646
1647                         if (count($feedUrls) == 0) {
1648                                 return array("code" => 3);
1649                         } else if (count($feedUrls) > 1) {
1650                                 return array("code" => 4, "feeds" => $feedUrls);
1651                         }
1652                         //use feed url as new URL
1653                         $url = key($feedUrls);
1654                 }
1655
1656                 if ($cat_id == "0" || !$cat_id) {
1657                         $cat_qpart = "NULL";
1658                 } else {
1659                         $cat_qpart = "'$cat_id'";
1660                 }
1661
1662                 $result = db_query($link,
1663                         "SELECT id FROM ttrss_feeds
1664                         WHERE feed_url = '$url' AND owner_uid = ".$_SESSION["uid"]);
1665
1666                 if (db_num_rows($result) == 0) {
1667                         $result = db_query($link,
1668                                 "INSERT INTO ttrss_feeds
1669                                         (owner_uid,feed_url,title,cat_id, auth_login,auth_pass,update_method)
1670                                 VALUES ('".$_SESSION["uid"]."', '$url',
1671                                 '[Unknown]', $cat_qpart, '$auth_login', '$auth_pass', 0)");
1672
1673                         $result = db_query($link,
1674                                 "SELECT id FROM ttrss_feeds WHERE feed_url = '$url'
1675                                         AND owner_uid = " . $_SESSION["uid"]);
1676
1677                         $feed_id = db_fetch_result($result, 0, "id");
1678
1679                         if ($feed_id) {
1680                                 update_rss_feed($link, $feed_id, true);
1681                         }
1682
1683                         return array("code" => 1);
1684                 } else {
1685                         return array("code" => 0);
1686                 }
1687         }
1688
1689         function print_feed_select($link, $id, $default_id = "",
1690                 $attributes = "", $include_all_feeds = true,
1691                 $root_id = false, $nest_level = 0) {
1692
1693                 if (!$root_id) {
1694                         print "<select id=\"$id\" name=\"$id\" $attributes>";
1695                         if ($include_all_feeds) {
1696                                 $is_selected = ("0" == $default_id) ? "selected=\"1\"" : "";
1697                                 print "<option $is_selected value=\"0\">".__('All feeds')."</option>";
1698                         }
1699                 }
1700
1701                 if (get_pref($link, 'ENABLE_FEED_CATS')) {
1702
1703                         if ($root_id)
1704                                 $parent_qpart = "parent_cat = '$root_id'";
1705                         else
1706                                 $parent_qpart = "parent_cat IS NULL";
1707
1708                         $result = db_query($link, "SELECT id,title,
1709                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1710                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1711                                 FROM ttrss_feed_categories
1712                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1713
1714                         while ($line = db_fetch_assoc($result)) {
1715
1716                                 for ($i = 0; $i < $nest_level; $i++)
1717                                         $line["title"] = " - " . $line["title"];
1718
1719                                 $is_selected = ("CAT:".$line["id"] == $default_id) ? "selected=\"1\"" : "";
1720
1721                                 printf("<option $is_selected value='CAT:%d'>%s</option>",
1722                                         $line["id"], htmlspecialchars($line["title"]));
1723
1724                                 if ($line["num_children"] > 0)
1725                                         print_feed_select($link, $id, $default_id, $attributes,
1726                                                 $include_all_feeds, $line["id"], $nest_level+1);
1727
1728                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1729                                         WHERE cat_id = '".$line["id"]."' AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1730
1731                                 while ($fline = db_fetch_assoc($feed_result)) {
1732                                         $is_selected = ($fline["id"] == $default_id) ? "selected=\"1\"" : "";
1733
1734                                         $fline["title"] = " + " . $fline["title"];
1735
1736                                         for ($i = 0; $i < $nest_level; $i++)
1737                                                 $fline["title"] = " - " . $fline["title"];
1738
1739                                         printf("<option $is_selected value='%d'>%s</option>",
1740                                                 $fline["id"], htmlspecialchars($fline["title"]));
1741                                 }
1742                         }
1743
1744                         if (!$root_id) {
1745                                 $is_selected = ($default_id == "CAT:0") ? "selected=\"1\"" : "";
1746
1747                                 printf("<option $is_selected value='CAT:0'>%s</option>",
1748                                         __("Uncategorized"));
1749
1750                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1751                                         WHERE cat_id IS NULL AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1752
1753                                 while ($fline = db_fetch_assoc($feed_result)) {
1754                                         $is_selected = ($fline["id"] == $default_id && !$default_is_cat) ? "selected=\"1\"" : "";
1755
1756                                         $fline["title"] = " + " . $fline["title"];
1757
1758                                         for ($i = 0; $i < $nest_level; $i++)
1759                                                 $fline["title"] = " - " . $fline["title"];
1760
1761                                         printf("<option $is_selected value='%d'>%s</option>",
1762                                                 $fline["id"], htmlspecialchars($fline["title"]));
1763                                 }
1764                         }
1765
1766                 } else {
1767                         $result = db_query($link, "SELECT id,title FROM ttrss_feeds
1768                                 WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
1769
1770                         while ($line = db_fetch_assoc($result)) {
1771
1772                                 $is_selected = ($line["id"] == $default_id) ? "selected=\"1\"" : "";
1773
1774                                 printf("<option $is_selected value='%d'>%s</option>",
1775                                         $line["id"], htmlspecialchars($line["title"]));
1776                         }
1777                 }
1778
1779                 if (!$root_id) {
1780                         print "</select>";
1781                 }
1782         }
1783
1784         function print_feed_cat_select($link, $id, $default_id,
1785                 $attributes, $include_all_cats = true, $root_id = false, $nest_level = 0) {
1786
1787                         if (!$root_id) {
1788                                         print "<select id=\"$id\" name=\"$id\" default=\"$default_id\" onchange=\"catSelectOnChange(this)\" $attributes>";
1789                         }
1790
1791                         if ($root_id)
1792                                 $parent_qpart = "parent_cat = '$root_id'";
1793                         else
1794                                 $parent_qpart = "parent_cat IS NULL";
1795
1796                         $result = db_query($link, "SELECT id,title,
1797                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1798                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1799                                 FROM ttrss_feed_categories
1800                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1801
1802                         while ($line = db_fetch_assoc($result)) {
1803                                 if ($line["id"] == $default_id) {
1804                                         $is_selected = "selected=\"1\"";
1805                                 } else {
1806                                         $is_selected = "";
1807                                 }
1808
1809                                 for ($i = 0; $i < $nest_level; $i++)
1810                                         $line["title"] = " - " . $line["title"];
1811
1812                                 if ($line["title"])
1813                                         printf("<option $is_selected value='%d'>%s</option>",
1814                                                 $line["id"], htmlspecialchars($line["title"]));
1815
1816                                 if ($line["num_children"] > 0)
1817                                         print_feed_cat_select($link, $id, $default_id, $attributes,
1818                                                 $include_all_cats, $line["id"], $nest_level+1);
1819                         }
1820
1821                         if (!$root_id) {
1822                                 if ($include_all_cats) {
1823                                         if (db_num_rows($result) > 0) {
1824                                                 print "<option disabled=\"1\">--------</option>";
1825                                         }
1826
1827                                         if ($default_id == 0) {
1828                                                 $is_selected = "selected=\"1\"";
1829                                         } else {
1830                                                 $is_selected = "";
1831                                         }
1832
1833                                         print "<option $is_selected value=\"0\">".__('Uncategorized')."</option>";
1834                                 }
1835                                 print "</select>";
1836                         }
1837                 }
1838
1839         function checkbox_to_sql_bool($val) {
1840                 return ($val == "on") ? "true" : "false";
1841         }
1842
1843         function getFeedCatTitle($link, $id) {
1844                 if ($id == -1) {
1845                         return __("Special");
1846                 } else if ($id < -10) {
1847                         return __("Labels");
1848                 } else if ($id > 0) {
1849                         $result = db_query($link, "SELECT ttrss_feed_categories.title
1850                                 FROM ttrss_feeds, ttrss_feed_categories WHERE ttrss_feeds.id = '$id' AND
1851                                         cat_id = ttrss_feed_categories.id");
1852                         if (db_num_rows($result) == 1) {
1853                                 return db_fetch_result($result, 0, "title");
1854                         } else {
1855                                 return __("Uncategorized");
1856                         }
1857                 } else {
1858                         return "getFeedCatTitle($id) failed";
1859                 }
1860
1861         }
1862
1863         function getFeedIcon($id) {
1864                 switch ($id) {
1865                 case 0:
1866                         return "images/archive.png";
1867                         break;
1868                 case -1:
1869                         return "images/mark_set.svg";
1870                         break;
1871                 case -2:
1872                         return "images/pub_set.svg";
1873                         break;
1874                 case -3:
1875                         return "images/fresh.png";
1876                         break;
1877                 case -4:
1878                         return "images/tag.png";
1879                         break;
1880                 case -6:
1881                         return "images/recently_read.png";
1882                         break;
1883                 default:
1884                         if ($id < -10) {
1885                                 return "images/label.png";
1886                         } else {
1887                                 if (file_exists(ICONS_DIR . "/$id.ico"))
1888                                         return ICONS_URL . "/$id.ico";
1889                         }
1890                         break;
1891                 }
1892         }
1893
1894         function getFeedTitle($link, $id, $cat = false) {
1895                 if ($cat) {
1896                         return getCategoryTitle($link, $id);
1897                 } else if ($id == -1) {
1898                         return __("Starred articles");
1899                 } else if ($id == -2) {
1900                         return __("Published articles");
1901                 } else if ($id == -3) {
1902                         return __("Fresh articles");
1903                 } else if ($id == -4) {
1904                         return __("All articles");
1905                 } else if ($id === 0 || $id === "0") {
1906                         return __("Archived articles");
1907                 } else if ($id == -6) {
1908                         return __("Recently read");
1909                 } else if ($id < -10) {
1910                         $label_id = -$id - 11;
1911                         $result = db_query($link, "SELECT caption FROM ttrss_labels2 WHERE id = '$label_id'");
1912                         if (db_num_rows($result) == 1) {
1913                                 return db_fetch_result($result, 0, "caption");
1914                         } else {
1915                                 return "Unknown label ($label_id)";
1916                         }
1917
1918                 } else if (is_numeric($id) && $id > 0) {
1919                         $result = db_query($link, "SELECT title FROM ttrss_feeds WHERE id = '$id'");
1920                         if (db_num_rows($result) == 1) {
1921                                 return db_fetch_result($result, 0, "title");
1922                         } else {
1923                                 return "Unknown feed ($id)";
1924                         }
1925                 } else {
1926                         return $id;
1927                 }
1928         }
1929
1930         function make_init_params($link) {
1931                 $params = array();
1932
1933                 $params["theme"] = get_user_theme($link);
1934                 $params["theme_options"] = get_user_theme_options($link);
1935
1936                 $params["sign_progress"] = theme_image($link, "images/indicator_white.gif");
1937                 $params["sign_progress_tiny"] = theme_image($link, "images/indicator_tiny.gif");
1938                 $params["sign_excl"] = theme_image($link, "images/sign_excl.svg");
1939                 $params["sign_info"] = theme_image($link, "images/sign_info.svg");
1940
1941                 foreach (array("ON_CATCHUP_SHOW_NEXT_FEED", "HIDE_READ_FEEDS",
1942                         "ENABLE_FEED_CATS", "FEEDS_SORT_BY_UNREAD", "CONFIRM_FEED_CATCHUP",
1943                         "CDM_AUTO_CATCHUP", "FRESH_ARTICLE_MAX_AGE", "DEFAULT_ARTICLE_LIMIT",
1944                         "HIDE_READ_SHOWS_SPECIAL", "COMBINED_DISPLAY_MODE") as $param) {
1945
1946                                  $params[strtolower($param)] = (int) get_pref($link, $param);
1947                  }
1948
1949                 $params["icons_url"] = ICONS_URL;
1950                 $params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
1951                 $params["default_view_mode"] = get_pref($link, "_DEFAULT_VIEW_MODE");
1952                 $params["default_view_limit"] = (int) get_pref($link, "_DEFAULT_VIEW_LIMIT");
1953                 $params["default_view_order_by"] = get_pref($link, "_DEFAULT_VIEW_ORDER_BY");
1954                 $params["bw_limit"] = (int) $_SESSION["bw_limit"];
1955
1956                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
1957                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1958
1959                 $max_feed_id = db_fetch_result($result, 0, "mid");
1960                 $num_feeds = db_fetch_result($result, 0, "nf");
1961
1962                 $params["max_feed_id"] = (int) $max_feed_id;
1963                 $params["num_feeds"] = (int) $num_feeds;
1964
1965                 $params["collapsed_feedlist"] = (int) get_pref($link, "_COLLAPSED_FEEDLIST");
1966                 $params["hotkeys"] = get_hotkeys_map($link);
1967
1968                 $params["csrf_token"] = $_SESSION["csrf_token"];
1969
1970                 return $params;
1971         }
1972
1973         function get_hotkeys_info($link) {
1974                 $hotkeys = array(
1975                         __("Navigation") => array(
1976                                 "next_feed" => __("Open next feed"),
1977                                 "prev_feed" => __("Open previous feed"),
1978                                 "next_article" => __("Open next article"),
1979                                 "prev_article" => __("Open previous article"),
1980                                 "search_dialog" => __("Show search dialog")),
1981                         __("Article") => array(
1982                                 "toggle_mark" => __("Toggle starred"),
1983                                 "toggle_publ" => __("Toggle published"),
1984                                 "toggle_unread" => __("Toggle unread"),
1985                                 "edit_tags" => __("Edit tags"),
1986                                 "dismiss_selected" => __("Dismiss selected"),
1987                                 "dismiss_read" => __("Dismiss read"),
1988                                 "open_in_new_window" => __("Open in new window"),
1989                                 "catchup_below" => __("Mark below as read"),
1990                                 "catchup_above" => __("Mark above as read"),
1991                                 "article_scroll_down" => __("Scroll down"),
1992                                 "article_scroll_up" => __("Scroll up"),
1993                                 "select_article_cursor" => __("Select article under cursor"),
1994                                 "email_article" => __("Email article"),
1995                                 "toggle_widescreen" => __("Toggle widescreen mode")),
1996                         __("Article selection") => array(
1997                                 "select_all" => __("Select all articles"),
1998                                 "select_unread" => __("Select unread"),
1999                                 "select_marked" => __("Select starred"),
2000                                 "select_published" => __("Select published"),
2001                                 "select_invert" => __("Invert selection"),
2002                                 "select_none" => __("Deselect everything")),
2003                         __("Feed") => array(
2004                                 "feed_refresh" => __("Refresh current feed"),
2005                                 "feed_unhide_read" => __("Un/hide read feeds"),
2006                                 "feed_subscribe" => __("Subscribe to feed"),
2007                                 "feed_edit" => __("Edit feed"),
2008                                 "feed_catchup" => __("Mark as read"),
2009                                 "feed_reverse" => __("Reverse headlines"),
2010                                 "feed_debug_update" => __("Debug feed update"),
2011                                 "catchup_all" => __("Mark all feeds as read"),
2012                                 "cat_toggle_collapse" => __("Un/collapse current category")),
2013                         __("Go to") => array(
2014                                 "goto_all" => __("All articles"),
2015                                 "goto_fresh" => __("Fresh"),
2016                                 "goto_marked" => __("Starred"),
2017                                 "goto_published" => __("Published"),
2018                                 "goto_tagcloud" => __("Tag cloud"),
2019                                 "goto_prefs" => __("Preferences")),
2020                         __("Other") => array(
2021                                 "create_label" => __("Create label"),
2022                                 "create_filter" => __("Create filter"),
2023                                 "collapse_sidebar" => __("Un/collapse sidebar"),
2024                                 "help_dialog" => __("Show help dialog"))
2025                         );
2026
2027                 return $hotkeys;
2028         }
2029
2030         function get_hotkeys_map($link) {
2031                 $hotkeys = array(
2032 //                      "navigation" => array(
2033                                 "k" => "next_feed",
2034                                 "j" => "prev_feed",
2035                                 "n" => "next_article",
2036                                 "p" => "prev_article",
2037                                 "(38)" => "prev_article",
2038                                 "(40)" => "next_article",
2039                                 "/" => "search_dialog",
2040 //                      "article" => array(
2041                                 "s" => "toggle_mark",
2042                                 "S" => "toggle_publ",
2043                                 "u" => "toggle_unread",
2044                                 "T" => "edit_tags",
2045                                 "D" => "dismiss_selected",
2046                                 "X" => "dismiss_read",
2047                                 "o" => "open_in_new_window",
2048                                 "c p" => "catchup_below",
2049                                 "c n" => "catchup_above",
2050                                 "N" => "article_scroll_down",
2051                                 "P" => "article_scroll_up",
2052                                 "a W" => "toggle_widescreen",
2053                                 "e" => "email_article",
2054 //                      "article_selection" => array(
2055                                 "a a" => "select_all",
2056                                 "a u" => "select_unread",
2057                                 "a U" => "select_marked",
2058                                 "a p" => "select_published",
2059                                 "a i" => "select_invert",
2060                                 "a n" => "select_none",
2061 //                      "feed" => array(
2062                                 "f r" => "feed_refresh",
2063                                 "f a" => "feed_unhide_read",
2064                                 "f s" => "feed_subscribe",
2065                                 "f e" => "feed_edit",
2066                                 "f q" => "feed_catchup",
2067                                 "f x" => "feed_reverse",
2068                                 "f D" => "feed_debug_update",
2069                                 "Q" => "catchup_all",
2070                                 "x" => "cat_toggle_collapse",
2071 //                      "goto" => array(
2072                                 "g a" => "goto_all",
2073                                 "g f" => "goto_fresh",
2074                                 "g s" => "goto_marked",
2075                                 "g p" => "goto_published",
2076                                 "g t" => "goto_tagcloud",
2077                                 "g P" => "goto_prefs",
2078 //                      "other" => array(
2079                                 "(9)" => "select_article_cursor", // tab
2080                                 "c l" => "create_label",
2081                                 "c f" => "create_filter",
2082                                 "c s" => "collapse_sidebar",
2083                                 "(191)" => "help_dialog",
2084                         );
2085
2086                 global $pluginhost;
2087                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_HOTKEY_MAP) as $plugin) {
2088                         $hotkeys = $plugin->hook_hotkey_map($hotkeys);
2089                 }
2090
2091                 $prefixes = array();
2092
2093                 foreach (array_keys($hotkeys) as $hotkey) {
2094                         $pair = explode(" ", $hotkey, 2);
2095
2096                         if (count($pair) > 1 && !in_array($pair[0], $prefixes)) {
2097                                 array_push($prefixes, $pair[0]);
2098                         }
2099                 }
2100
2101                 return array($prefixes, $hotkeys);
2102         }
2103
2104         function make_runtime_info($link) {
2105                 $data = array();
2106
2107                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2108                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2109
2110                 $max_feed_id = db_fetch_result($result, 0, "mid");
2111                 $num_feeds = db_fetch_result($result, 0, "nf");
2112
2113                 $data["max_feed_id"] = (int) $max_feed_id;
2114                 $data["num_feeds"] = (int) $num_feeds;
2115
2116                 $data['last_article_id'] = getLastArticleId($link);
2117                 $data['cdm_expanded'] = get_pref($link, 'CDM_EXPANDED');
2118
2119                 if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
2120
2121                         $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
2122
2123                         if (time() - $_SESSION["daemon_stamp_check"] > 30) {
2124
2125                                 $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
2126
2127                                 if ($stamp) {
2128                                         $stamp_delta = time() - $stamp;
2129
2130                                         if ($stamp_delta > 1800) {
2131                                                 $stamp_check = 0;
2132                                         } else {
2133                                                 $stamp_check = 1;
2134                                                 $_SESSION["daemon_stamp_check"] = time();
2135                                         }
2136
2137                                         $data['daemon_stamp_ok'] = $stamp_check;
2138
2139                                         $stamp_fmt = date("Y.m.d, G:i", $stamp);
2140
2141                                         $data['daemon_stamp'] = $stamp_fmt;
2142                                 }
2143                         }
2144                 }
2145
2146                 if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
2147                                 $new_version_details = @check_for_update($link);
2148
2149                                 $data['new_version_available'] = (int) ($new_version_details != false);
2150
2151                                 $_SESSION["last_version_check"] = time();
2152                                 $_SESSION["version_data"] = $new_version_details;
2153                 }
2154
2155                 return $data;
2156         }
2157
2158         function search_to_sql($link, $search, $match_on) {
2159
2160                 $search_query_part = "";
2161
2162                 $keywords = explode(" ", $search);
2163                 $query_keywords = array();
2164
2165                 foreach ($keywords as $k) {
2166                         if (strpos($k, "-") === 0) {
2167                                 $k = substr($k, 1);
2168                                 $not = "NOT";
2169                         } else {
2170                                 $not = "";
2171                         }
2172
2173                         $commandpair = explode(":", mb_strtolower($k), 2);
2174
2175                         if ($commandpair[0] == "note" && $commandpair[1]) {
2176
2177                                 if ($commandpair[1] == "true")
2178                                         array_push($query_keywords, "($not (note IS NOT NULL AND note != ''))");
2179                                 else
2180                                         array_push($query_keywords, "($not (note IS NULL OR note = ''))");
2181
2182                         } else if ($commandpair[0] == "star" && $commandpair[1]) {
2183
2184                                 if ($commandpair[1] == "true")
2185                                         array_push($query_keywords, "($not (marked = true))");
2186                                 else
2187                                         array_push($query_keywords, "($not (marked = false))");
2188
2189                         } else if ($commandpair[0] == "pub" && $commandpair[1]) {
2190
2191                                 if ($commandpair[1] == "true")
2192                                         array_push($query_keywords, "($not (published = true))");
2193                                 else
2194                                         array_push($query_keywords, "($not (published = false))");
2195
2196                         } else if (strpos($k, "@") === 0) {
2197
2198                                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $_SESSION['uid']);
2199                                 $orig_ts = strtotime(substr($k, 1));
2200                                 $k = date("Y-m-d", convert_timestamp($orig_ts, $user_tz_string, 'UTC'));
2201
2202                                 //$k = date("Y-m-d", strtotime(substr($k, 1)));
2203
2204                                 array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
2205                         } else if ($match_on == "both") {
2206                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2207                                                 OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2208                         } else if ($match_on == "title") {
2209                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%'))");
2210                         } else if ($match_on == "content") {
2211                                 array_push($query_keywords, "(UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2212                         }
2213                 }
2214
2215                 $search_query_part = implode("AND", $query_keywords);
2216
2217                 return $search_query_part;
2218         }
2219
2220         function getParentCategories($link, $cat, $owner_uid) {
2221                 $rv = array();
2222
2223                 $result = db_query($link, "SELECT parent_cat FROM ttrss_feed_categories
2224                         WHERE id = '$cat' AND parent_cat IS NOT NULL AND owner_uid = $owner_uid");
2225
2226                 while ($line = db_fetch_assoc($result)) {
2227                         array_push($rv, $line["parent_cat"]);
2228                         $rv = array_merge($rv, getParentCategories($link, $line["parent_cat"], $owner_uid));
2229                 }
2230
2231                 return $rv;
2232         }
2233
2234         function getChildCategories($link, $cat, $owner_uid) {
2235                 $rv = array();
2236
2237                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories
2238                         WHERE parent_cat = '$cat' AND owner_uid = $owner_uid");
2239
2240                 while ($line = db_fetch_assoc($result)) {
2241                         array_push($rv, $line["id"]);
2242                         $rv = array_merge($rv, getChildCategories($link, $line["id"], $owner_uid));
2243                 }
2244
2245                 return $rv;
2246         }
2247
2248         function queryFeedHeadlines($link, $feed, $limit, $view_mode, $cat_view, $search, $search_mode, $match_on, $override_order = false, $offset = 0, $owner_uid = 0, $filter = false, $since_id = 0, $include_children = false) {
2249
2250                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2251
2252                 $ext_tables_part = "";
2253
2254                         if ($search) {
2255
2256                                 if (SPHINX_ENABLED) {
2257                                         $ids = join(",", @sphinx_search($search, 0, 500));
2258
2259                                         if ($ids)
2260                                                 $search_query_part = "ref_id IN ($ids) AND ";
2261                                         else
2262                                                 $search_query_part = "ref_id = -1 AND ";
2263
2264                                 } else {
2265                                         $search_query_part = search_to_sql($link, $search, $match_on);
2266                                         $search_query_part .= " AND ";
2267                                 }
2268
2269                         } else {
2270                                 $search_query_part = "";
2271                         }
2272
2273                         if ($filter) {
2274
2275                                 if (DB_TYPE == "pgsql") {
2276                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '14 days' ";
2277                                 } else {
2278                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL 14 DAY) ";
2279                                 }
2280
2281                                 $override_order = "updated DESC";
2282
2283                                 $filter_query_part = filter_to_sql($link, $filter, $owner_uid);
2284
2285                                 // Try to check if SQL regexp implementation chokes on a valid regexp
2286                                 $result = db_query($link, "SELECT true AS true_val FROM ttrss_entries,
2287                                         ttrss_user_entries, ttrss_feeds, ttrss_feed_categories
2288                                         WHERE $filter_query_part LIMIT 1", false);
2289
2290                                 $test = db_fetch_result($result, 0, "true_val");
2291
2292                                 if (!$test) {
2293                                         $filter_query_part = "false AND";
2294                                 } else {
2295                                         $filter_query_part .= " AND";
2296                                 }
2297
2298                         } else {
2299                                 $filter_query_part = "";
2300                         }
2301
2302                         if ($since_id) {
2303                                 $since_id_part = "ttrss_entries.id > $since_id AND ";
2304                         } else {
2305                                 $since_id_part = "";
2306                         }
2307
2308                         $view_query_part = "";
2309
2310                         if ($view_mode == "adaptive" || $view_query_part == "noscores") {
2311                                 if ($search) {
2312                                         $view_query_part = " ";
2313                                 } else if ($feed != -1) {
2314                                         $unread = getFeedUnread($link, $feed, $cat_view);
2315
2316                                         if ($cat_view && $feed > 0 && $include_children)
2317                                                 $unread += getCategoryChildrenUnread($link, $feed);
2318
2319                                         if ($unread > 0) {
2320                                                 $view_query_part = " unread = true AND ";
2321                                         }
2322                                 }
2323                         }
2324
2325                         if ($view_mode == "marked") {
2326                                 $view_query_part = " marked = true AND ";
2327                         }
2328
2329                         if ($view_mode == "published") {
2330                                 $view_query_part = " published = true AND ";
2331                         }
2332
2333                         if ($view_mode == "unread") {
2334                                 $view_query_part = " unread = true AND ";
2335                         }
2336
2337                         if ($view_mode == "updated") {
2338                                 $view_query_part = " (last_read is null and unread = false) AND ";
2339                         }
2340
2341                         if ($limit > 0) {
2342                                 $limit_query_part = "LIMIT " . $limit;
2343                         }
2344
2345                         $allow_archived = false;
2346
2347                         $vfeed_query_part = "";
2348
2349                         // override query strategy and enable feed display when searching globally
2350                         if ($search && $search_mode == "all_feeds") {
2351                                 $query_strategy_part = "true";
2352                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2353                         /* tags */
2354                         } else if (!is_numeric($feed)) {
2355                                 $query_strategy_part = "true";
2356                                 $vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
2357                                         id = feed_id) as feed_title,";
2358                         } else if ($search && $search_mode == "this_cat") {
2359                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2360
2361                                 if ($feed > 0) {
2362                                         if ($include_children) {
2363                                                 $subcats = getChildCategories($link, $feed, $owner_uid);
2364                                                 array_push($subcats, $feed);
2365                                                 $cats_qpart = join(",", $subcats);
2366                                         } else {
2367                                                 $cats_qpart = $feed;
2368                                         }
2369
2370                                         $query_strategy_part = "ttrss_feeds.cat_id IN ($cats_qpart)";
2371
2372                                 } else {
2373                                         $query_strategy_part = "ttrss_feeds.cat_id IS NULL";
2374                                 }
2375
2376                         } else if ($feed > 0) {
2377
2378                                 if ($cat_view) {
2379
2380                                         if ($feed > 0) {
2381                                                 if ($include_children) {
2382                                                         # sub-cats
2383                                                         $subcats = getChildCategories($link, $feed, $owner_uid);
2384
2385                                                         array_push($subcats, $feed);
2386                                                         $query_strategy_part = "cat_id IN (".
2387                                                                         implode(",", $subcats).")";
2388
2389                                                 } else {
2390                                                         $query_strategy_part = "cat_id = '$feed'";
2391                                                 }
2392
2393                                         } else {
2394                                                 $query_strategy_part = "cat_id IS NULL";
2395                                         }
2396
2397                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2398
2399                                 } else {
2400                                         $query_strategy_part = "feed_id = '$feed'";
2401                                 }
2402                         } else if ($feed == 0 && !$cat_view) { // archive virtual feed
2403                                 $query_strategy_part = "feed_id IS NULL";
2404                                 $allow_archived = true;
2405                         } else if ($feed == 0 && $cat_view) { // uncategorized
2406                                 $query_strategy_part = "cat_id IS NULL AND feed_id IS NOT NULL";
2407                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2408                         } else if ($feed == -1) { // starred virtual feed
2409                                 $query_strategy_part = "marked = true";
2410                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2411                                 $allow_archived = true;
2412
2413                         } else if ($feed == -2) { // published virtual feed OR labels category
2414
2415                                 if (!$cat_view) {
2416                                         $query_strategy_part = "published = true";
2417                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2418                                         $allow_archived = true;
2419
2420                                         if (!$override_order) $override_order = "last_read DESC, updated DESC";
2421                                 } else {
2422                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2423
2424                                         $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2425
2426                                         $query_strategy_part = "ttrss_labels2.id = ttrss_user_labels2.label_id AND
2427                                                 ttrss_user_labels2.article_id = ref_id";
2428
2429                                 }
2430                         } else if ($feed == -6) { // recently read
2431                                 $query_strategy_part = "unread = false AND last_read IS NOT NULL";
2432                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2433                                 $allow_archived = true;
2434
2435                                 if (!$override_order) $override_order = "last_read DESC";
2436                         } else if ($feed == -3) { // fresh virtual feed
2437                                 $query_strategy_part = "unread = true AND score >= 0";
2438
2439                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
2440
2441                                 if (DB_TYPE == "pgsql") {
2442                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
2443                                 } else {
2444                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
2445                                 }
2446
2447                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2448                         } else if ($feed == -4) { // all articles virtual feed
2449                                 $query_strategy_part = "true";
2450                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2451                         } else if ($feed <= -10) { // labels
2452                                 $label_id = -$feed - 11;
2453
2454                                 $query_strategy_part = "label_id = '$label_id' AND
2455                                         ttrss_labels2.id = ttrss_user_labels2.label_id AND
2456                                         ttrss_user_labels2.article_id = ref_id";
2457
2458                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2459                                 $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2460                                 $allow_archived = true;
2461
2462                         } else {
2463                                 $query_strategy_part = "true";
2464                         }
2465
2466                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
2467                                 $date_sort_field = "updated";
2468                         } else {
2469                                 $date_sort_field = "date_entered";
2470                         }
2471
2472                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
2473                                 $order_by = "$date_sort_field";
2474                         } else {
2475                                 $order_by = "$date_sort_field DESC";
2476                         }
2477
2478                         if ($view_mode != "noscores") {
2479                                 $order_by = "score DESC, $order_by";
2480                         }
2481
2482                         if ($override_order) {
2483                                 $order_by = $override_order;
2484                         }
2485
2486                         $feed_title = "";
2487
2488                         if ($search) {
2489                                 $feed_title = T_sprintf("Search results: %s", $search);
2490                         } else {
2491                                 if ($cat_view) {
2492                                         $feed_title = getCategoryTitle($link, $feed);
2493                                 } else {
2494                                         if (is_numeric($feed) && $feed > 0) {
2495                                                 $result = db_query($link, "SELECT title,site_url,last_error
2496                                                         FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = $owner_uid");
2497
2498                                                 $feed_title = db_fetch_result($result, 0, "title");
2499                                                 $feed_site_url = db_fetch_result($result, 0, "site_url");
2500                                                 $last_error = db_fetch_result($result, 0, "last_error");
2501                                         } else {
2502                                                 $feed_title = getFeedTitle($link, $feed);
2503                                         }
2504                                 }
2505                         }
2506
2507                         $content_query_part = "content as content_preview, cached_content, ";
2508
2509                         if (is_numeric($feed)) {
2510
2511                                 if ($feed >= 0) {
2512                                         $feed_kind = "Feeds";
2513                                 } else {
2514                                         $feed_kind = "Labels";
2515                                 }
2516
2517                                 if ($limit_query_part) {
2518                                         $offset_query_part = "OFFSET $offset";
2519                                 }
2520
2521                                 // proper override_order applied above
2522                                 if ($vfeed_query_part && get_pref($link, 'VFEED_GROUP_BY_FEED', $owner_uid)) {
2523                                         if (!$override_order) {
2524                                                 $order_by = "ttrss_feeds.title, $order_by";
2525                                         } else {
2526                                                 $order_by = "ttrss_feeds.title, $override_order";
2527                                         }
2528                                 }
2529
2530                                 if (!$allow_archived) {
2531                                         $from_qpart = "ttrss_entries,ttrss_user_entries,ttrss_feeds$ext_tables_part";
2532                                         $feed_check_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
2533
2534                                 } else {
2535                                         $from_qpart = "ttrss_entries$ext_tables_part,ttrss_user_entries
2536                                                 LEFT JOIN ttrss_feeds ON (feed_id = ttrss_feeds.id)";
2537                                 }
2538
2539                                 $query = "SELECT DISTINCT
2540                                                 date_entered,
2541                                                 guid,
2542                                                 ttrss_entries.id,ttrss_entries.title,
2543                                                 updated,
2544                                                 label_cache,
2545                                                 tag_cache,
2546                                                 always_display_enclosures,
2547                                                 site_url,
2548                                                 note,
2549                                                 num_comments,
2550                                                 comments,
2551                                                 int_id,
2552                                                 unread,feed_id,marked,published,link,last_read,orig_feed_id,
2553                                                 ".SUBSTRING_FOR_DATE."(last_read,1,19) as last_read_noms,
2554                                                 $vfeed_query_part
2555                                                 $content_query_part
2556                                                 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated_noms,
2557                                                 author,score
2558                                         FROM
2559                                                 $from_qpart
2560                                         WHERE
2561                                         $feed_check_qpart
2562                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
2563                                         ttrss_user_entries.owner_uid = '$owner_uid' AND
2564                                         $search_query_part
2565                                         $filter_query_part
2566                                         $view_query_part
2567                                         $since_id_part
2568                                         $query_strategy_part ORDER BY $order_by
2569                                         $limit_query_part $offset_query_part";
2570
2571                                 if ($_REQUEST["debug"]) print $query;
2572
2573                                 $result = db_query($link, $query);
2574
2575                         } else {
2576                                 // browsing by tag
2577
2578                                 $select_qpart = "SELECT DISTINCT " .
2579                                                                 "date_entered," .
2580                                                                 "guid," .
2581                                                                 "note," .
2582                                                                 "ttrss_entries.id as id," .
2583                                                                 "title," .
2584                                                                 "updated," .
2585                                                                 "unread," .
2586                                                                 "feed_id," .
2587                                                                 "orig_feed_id," .
2588                                                                 "marked," .
2589                                                                 "num_comments, " .
2590                                                                 "comments, " .
2591                                                                 "tag_cache," .
2592                                                                 "label_cache," .
2593                                                                 "link," .
2594                                                                 "last_read," .
2595                                                                 SUBSTRING_FOR_DATE . "(last_read,1,19) as last_read_noms," .
2596                                                                 $since_id_part .
2597                                                                 $vfeed_query_part .
2598                                                                 $content_query_part .
2599                                                                 SUBSTRING_FOR_DATE . "(updated,1,19) as updated_noms," .
2600                                                                 "score ";
2601
2602                                 $feed_kind = "Tags";
2603                                 $all_tags = explode(",", $feed);
2604                                 if ($search_mode == 'any') {
2605                                         $tag_sql = "tag_name in (" . implode(", ", array_map("db_quote", $all_tags)) . ")";
2606                                         $from_qpart = " FROM ttrss_entries,ttrss_user_entries,ttrss_tags ";
2607                                         $where_qpart = " WHERE " .
2608                                                                    "ref_id = ttrss_entries.id AND " .
2609                                                                    "ttrss_user_entries.owner_uid = $owner_uid AND " .
2610                                                                    "post_int_id = int_id AND $tag_sql AND " .
2611                                                                    $view_query_part .
2612                                                                    $search_query_part .
2613                                                                    $query_strategy_part . " ORDER BY $order_by " .
2614                                                                    $limit_query_part;
2615
2616                                 } else {
2617                                         $i = 1;
2618                                         $sub_selects = array();
2619                                         $sub_ands = array();
2620                                         foreach ($all_tags as $term) {
2621                                                 array_push($sub_selects, "(SELECT post_int_id from ttrss_tags WHERE tag_name = " . db_quote($term) . " AND owner_uid = $owner_uid) as A$i");
2622                                                 $i++;
2623                                         }
2624                                         if ($i > 2) {
2625                                                 $x = 1;
2626                                                 $y = 2;
2627                                                 do {
2628                                                         array_push($sub_ands, "A$x.post_int_id = A$y.post_int_id");
2629                                                         $x++;
2630                                                         $y++;
2631                                                 } while ($y < $i);
2632                                         }
2633                                         array_push($sub_ands, "A1.post_int_id = ttrss_user_entries.int_id and ttrss_user_entries.owner_uid = $owner_uid");
2634                                         array_push($sub_ands, "ttrss_user_entries.ref_id = ttrss_entries.id");
2635                                         $from_qpart = " FROM " . implode(", ", $sub_selects) . ", ttrss_user_entries, ttrss_entries";
2636                                         $where_qpart = " WHERE " . implode(" AND ", $sub_ands);
2637                                 }
2638                                 //                              error_log("TAG SQL: " . $tag_sql);
2639                                 // $tag_sql = "tag_name = '$feed'";   DEFAULT way
2640
2641                                 //                              error_log("[". $select_qpart . "][" . $from_qpart . "][" .$where_qpart . "]");
2642                                 $result = db_query($link, $select_qpart . $from_qpart . $where_qpart);
2643                         }
2644
2645                         return array($result, $feed_title, $feed_site_url, $last_error);
2646
2647         }
2648
2649         function sanitize($link, $str, $force_strip_tags = false, $owner = false, $site_url = false) {
2650                 if (!$owner) $owner = $_SESSION["uid"];
2651
2652                 $res = trim($str); if (!$res) return '';
2653
2654                 $config = array('safe' => 1, 'deny_attribute' => 'style, width, height, class, id', 'comment' => 1, 'cdata' => 1, 'balance' => 0);
2655                 $res = htmLawed($res, $config);
2656
2657                 if (get_pref($link, "STRIP_IMAGES", $owner)) {
2658                         $res = preg_replace('/<img[^>]+>/is', '', $res);
2659                 }
2660
2661                 if (strpos($res, "href=") === false)
2662                         $res = rewrite_urls($res);
2663
2664                 $charset_hack = '<head>
2665                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
2666                 </head>';
2667
2668                 $res = trim($res); if (!$res) return '';
2669
2670                 libxml_use_internal_errors(true);
2671
2672                 $doc = new DOMDocument();
2673                 $doc->loadHTML($charset_hack . $res);
2674                 $xpath = new DOMXPath($doc);
2675
2676                 $entries = $xpath->query('(//a[@href]|//img[@src])');
2677                 $br_inserted = 0;
2678
2679                 foreach ($entries as $entry) {
2680
2681                         if ($site_url) {
2682
2683                                 if ($entry->hasAttribute('href'))
2684                                         $entry->setAttribute('href',
2685                                                 rewrite_relative_url($site_url, $entry->getAttribute('href')));
2686
2687                                 if ($entry->hasAttribute('src'))
2688                                         if (preg_match('/^image.php\?i=[a-z0-9]+$/', $entry->getAttribute('src')) == 0)
2689                                                 $entry->setAttribute('src',
2690                                                         rewrite_relative_url($site_url, $entry->getAttribute('src')));
2691                         }
2692
2693                         if (strtolower($entry->nodeName) == "a") {
2694                                 $entry->setAttribute("target", "_blank");
2695                         }
2696
2697                         if (strtolower($entry->nodeName) == "img" && !$br_inserted) {
2698                                 $br = $doc->createElement("br");
2699
2700                                 if ($entry->parentNode->nextSibling) {
2701                                         $entry->parentNode->insertBefore($br, $entry->nextSibling);
2702                                         $br_inserted = 1;
2703                                 }
2704
2705                         }
2706                 }
2707
2708                 $node = $doc->getElementsByTagName('body')->item(0);
2709
2710                 // http://tt-rss.org/redmine/issues/357
2711                 return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
2712         }
2713
2714         function check_for_update($link) {
2715                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2716                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION;
2717
2718                         $version_data = @fetch_file_contents($version_url);
2719
2720                         if ($version_data) {
2721                                 $version_data = json_decode($version_data, true);
2722                                 if ($version_data && $version_data['version']) {
2723
2724                                         if (version_compare(VERSION, $version_data['version']) == -1) {
2725                                                 return $version_data;
2726                                         }
2727                                 }
2728                         }
2729                 }
2730                 return false;
2731         }
2732
2733         function markArticlesById($link, $ids, $cmode) {
2734
2735                 $tmp_ids = array();
2736
2737                 foreach ($ids as $id) {
2738                         array_push($tmp_ids, "ref_id = '$id'");
2739                 }
2740
2741                 $ids_qpart = join(" OR ", $tmp_ids);
2742
2743                 if ($cmode == 0) {
2744                         db_query($link, "UPDATE ttrss_user_entries SET
2745                         marked = false,last_read = NOW()
2746                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2747                 } else if ($cmode == 1) {
2748                         db_query($link, "UPDATE ttrss_user_entries SET
2749                         marked = true
2750                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2751                 } else {
2752                         db_query($link, "UPDATE ttrss_user_entries SET
2753                         marked = NOT marked,last_read = NOW()
2754                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2755                 }
2756         }
2757
2758         function publishArticlesById($link, $ids, $cmode) {
2759
2760                 $tmp_ids = array();
2761
2762                 foreach ($ids as $id) {
2763                         array_push($tmp_ids, "ref_id = '$id'");
2764                 }
2765
2766                 $ids_qpart = join(" OR ", $tmp_ids);
2767
2768                 if ($cmode == 0) {
2769                         db_query($link, "UPDATE ttrss_user_entries SET
2770                         published = false,last_read = NOW()
2771                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2772                 } else if ($cmode == 1) {
2773                         db_query($link, "UPDATE ttrss_user_entries SET
2774                         published = true,last_read = NOW()
2775                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2776                 } else {
2777                         db_query($link, "UPDATE ttrss_user_entries SET
2778                         published = NOT published,last_read = NOW()
2779                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2780                 }
2781
2782                 if (PUBSUBHUBBUB_HUB) {
2783                         $rss_link = get_self_url_prefix() .
2784                                 "/public.php?op=rss&id=-2&key=" .
2785                                 get_feed_access_key($link, -2, false);
2786
2787                         $p = new Publisher(PUBSUBHUBBUB_HUB);
2788
2789                         $pubsub_result = $p->publish_update($rss_link);
2790                 }
2791         }
2792
2793         function catchupArticlesById($link, $ids, $cmode, $owner_uid = false) {
2794
2795                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2796                 if (count($ids) == 0) return;
2797
2798                 $tmp_ids = array();
2799
2800                 foreach ($ids as $id) {
2801                         array_push($tmp_ids, "ref_id = '$id'");
2802                 }
2803
2804                 $ids_qpart = join(" OR ", $tmp_ids);
2805
2806                 if ($cmode == 0) {
2807                         db_query($link, "UPDATE ttrss_user_entries SET
2808                         unread = false,last_read = NOW()
2809                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2810                 } else if ($cmode == 1) {
2811                         db_query($link, "UPDATE ttrss_user_entries SET
2812                         unread = true
2813                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2814                 } else {
2815                         db_query($link, "UPDATE ttrss_user_entries SET
2816                         unread = NOT unread,last_read = NOW()
2817                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2818                 }
2819
2820                 /* update ccache */
2821
2822                 $result = db_query($link, "SELECT DISTINCT feed_id FROM ttrss_user_entries
2823                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2824
2825                 while ($line = db_fetch_assoc($result)) {
2826                         ccache_update($link, $line["feed_id"], $owner_uid);
2827                 }
2828         }
2829
2830         function catchupArticleById($link, $id, $cmode) {
2831
2832                 if ($cmode == 0) {
2833                         db_query($link, "UPDATE ttrss_user_entries SET
2834                         unread = false,last_read = NOW()
2835                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
2836                 } else if ($cmode == 1) {
2837                         db_query($link, "UPDATE ttrss_user_entries SET
2838                         unread = true
2839                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
2840                 } else {
2841                         db_query($link, "UPDATE ttrss_user_entries SET
2842                         unread = NOT unread,last_read = NOW()
2843                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
2844                 }
2845
2846                 $feed_id = getArticleFeed($link, $id);
2847                 ccache_update($link, $feed_id, $_SESSION["uid"]);
2848         }
2849
2850         function make_guid_from_title($title) {
2851                 return preg_replace("/[ \"\',.:;]/", "-",
2852                         mb_strtolower(strip_tags($title), 'utf-8'));
2853         }
2854
2855         function get_article_tags($link, $id, $owner_uid = 0, $tag_cache = false) {
2856
2857                 $a_id = db_escape_string($id);
2858
2859                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2860
2861                 $query = "SELECT DISTINCT tag_name,
2862                         owner_uid as owner FROM
2863                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
2864                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
2865
2866                 $obj_id = md5("TAGS:$owner_uid:$id");
2867                 $tags = array();
2868
2869                 /* check cache first */
2870
2871                 if ($tag_cache === false) {
2872                         $result = db_query($link, "SELECT tag_cache FROM ttrss_user_entries
2873                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2874
2875                         $tag_cache = db_fetch_result($result, 0, "tag_cache");
2876                 }
2877
2878                 if ($tag_cache) {
2879                         $tags = explode(",", $tag_cache);
2880                 } else {
2881
2882                         /* do it the hard way */
2883
2884                         $tmp_result = db_query($link, $query);
2885
2886                         while ($tmp_line = db_fetch_assoc($tmp_result)) {
2887                                 array_push($tags, $tmp_line["tag_name"]);
2888                         }
2889
2890                         /* update the cache */
2891
2892                         $tags_str = db_escape_string(join(",", $tags));
2893
2894                         db_query($link, "UPDATE ttrss_user_entries
2895                                 SET tag_cache = '$tags_str' WHERE ref_id = '$id'
2896                                 AND owner_uid = $owner_uid");
2897                 }
2898
2899                 return $tags;
2900         }
2901
2902         function trim_array($array) {
2903                 $tmp = $array;
2904                 array_walk($tmp, 'trim');
2905                 return $tmp;
2906         }
2907
2908         function tag_is_valid($tag) {
2909                 if ($tag == '') return false;
2910                 if (preg_match("/^[0-9]*$/", $tag)) return false;
2911                 if (mb_strlen($tag) > 250) return false;
2912
2913                 if (function_exists('iconv')) {
2914                         $tag = iconv("utf-8", "utf-8", $tag);
2915                 }
2916
2917                 if (!$tag) return false;
2918
2919                 return true;
2920         }
2921
2922         function render_login_form($link, $form_id = 0) {
2923                 switch ($form_id) {
2924                 case 0:
2925                         require_once "login_form.php";
2926                         break;
2927                 case 1:
2928                         require_once "mobile/login_form.php";
2929                         break;
2930                 }
2931                 exit;
2932         }
2933
2934         // from http://developer.apple.com/internet/safari/faq.html
2935         function no_cache_incantation() {
2936                 header("Expires: Mon, 22 Dec 1980 00:00:00 GMT"); // Happy birthday to me :)
2937                 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
2938                 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); // HTTP/1.1
2939                 header("Cache-Control: post-check=0, pre-check=0", false);
2940                 header("Pragma: no-cache"); // HTTP/1.0
2941         }
2942
2943         function format_warning($msg, $id = "") {
2944                 global $link;
2945                 return "<div class=\"warning\" id=\"$id\">
2946                         <img src=\"".theme_image($link, "images/sign_excl.svg")."\">$msg</div>";
2947         }
2948
2949         function format_notice($msg, $id = "") {
2950                 global $link;
2951                 return "<div class=\"notice\" id=\"$id\">
2952                         <img src=\"".theme_image($link, "images/sign_info.svg")."\">$msg</div>";
2953         }
2954
2955         function format_error($msg, $id = "") {
2956                 global $link;
2957                 return "<div class=\"error\" id=\"$id\">
2958                         <img src=\"".theme_image($link, "images/sign_excl.svg")."\">$msg</div>";
2959         }
2960
2961         function print_notice($msg) {
2962                 return print format_notice($msg);
2963         }
2964
2965         function print_warning($msg) {
2966                 return print format_warning($msg);
2967         }
2968
2969         function print_error($msg) {
2970                 return print format_error($msg);
2971         }
2972
2973
2974         function T_sprintf() {
2975                 $args = func_get_args();
2976                 return vsprintf(__(array_shift($args)), $args);
2977         }
2978
2979         function format_inline_player($link, $url, $ctype) {
2980
2981                 $entry = "";
2982
2983                 if (strpos($ctype, "audio/") === 0) {
2984
2985                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
2986                                 strpos($_SERVER['HTTP_USER_AGENT'], "Chrome") !== false ||
2987                                 strpos($_SERVER['HTTP_USER_AGENT'], "Safari") !== false )) {
2988
2989                                 $id = 'AUDIO-' . uniqid();
2990
2991                                 $entry .= "<audio id=\"$id\"\">
2992                                         <source src=\"$url\"></source>
2993                                         </audio>";
2994
2995                                 $entry .= "<span onclick=\"player(this)\"
2996                                         title=\"".__("Click to play")."\" status=\"0\"
2997                                         class=\"player\" audio-id=\"$id\">".__("Play")."</span>";
2998
2999                         } else {
3000
3001                                 $entry .= "<object type=\"application/x-shockwave-flash\"
3002                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
3003                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
3004                                         <param name=\"movie\"
3005                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
3006                                         </object>";
3007                         }
3008                 }
3009
3010                 $filename = substr($url, strrpos($url, "/")+1);
3011
3012                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3013                         $filename . " (" . $ctype . ")" . "</a>";
3014
3015                 return $entry;
3016         }
3017
3018         function format_article($link, $id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
3019                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3020
3021                 $rv = array();
3022
3023                 $rv['id'] = $id;
3024
3025                 /* we can figure out feed_id from article id anyway, why do we
3026                  * pass feed_id here? let's ignore the argument :( */
3027
3028                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3029                         WHERE ref_id = '$id'");
3030
3031                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
3032
3033                 $rv['feed_id'] = $feed_id;
3034
3035                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
3036
3037                 $result = db_query($link, "SELECT rtl_content, always_display_enclosures, cache_content FROM ttrss_feeds
3038                         WHERE id = '$feed_id' AND owner_uid = $owner_uid");
3039
3040                 if (db_num_rows($result) == 1) {
3041                         $rtl_content = sql_bool_to_bool(db_fetch_result($result, 0, "rtl_content"));
3042                         $always_display_enclosures = sql_bool_to_bool(db_fetch_result($result, 0, "always_display_enclosures"));
3043                         $cache_content = sql_bool_to_bool(db_fetch_result($result, 0, "cache_content"));
3044                 } else {
3045                         $rtl_content = false;
3046                         $always_display_enclosures = false;
3047                         $cache_content = false;
3048                 }
3049
3050                 if ($rtl_content) {
3051                         $rtl_tag = "dir=\"RTL\"";
3052                         $rtl_class = "RTL";
3053                 } else {
3054                         $rtl_tag = "";
3055                         $rtl_class = "";
3056                 }
3057
3058                 if ($mark_as_read) {
3059                         $result = db_query($link, "UPDATE ttrss_user_entries
3060                                 SET unread = false,last_read = NOW()
3061                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
3062
3063                         ccache_update($link, $feed_id, $owner_uid);
3064                 }
3065
3066                 $result = db_query($link, "SELECT id,title,link,content,feed_id,comments,int_id,
3067                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
3068                         (SELECT icon_url FROM ttrss_feeds WHERE id = feed_id) as icon_url,
3069                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
3070                         num_comments,
3071                         tag_cache,
3072                         author,
3073                         orig_feed_id,
3074                         note,
3075                         cached_content
3076                         FROM ttrss_entries,ttrss_user_entries
3077                         WHERE   id = '$id' AND ref_id = id AND owner_uid = $owner_uid");
3078
3079                 if ($result) {
3080
3081                         $line = db_fetch_assoc($result);
3082
3083                         if ($line["icon_url"]) {
3084                                 $feed_icon = "<img src=\"" . $line["icon_url"] . "\">";
3085                         } else {
3086                                 $feed_icon = "&nbsp;";
3087                         }
3088
3089                         $feed_site_url = $line['site_url'];
3090
3091                         $num_comments = $line["num_comments"];
3092                         $entry_comments = "";
3093
3094                         if ($num_comments > 0) {
3095                                 if ($line["comments"]) {
3096                                         $comments_url = htmlspecialchars($line["comments"]);
3097                                 } else {
3098                                         $comments_url = htmlspecialchars($line["link"]);
3099                                 }
3100                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
3101                         } else {
3102                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
3103                                         $entry_comments = "<a target='_blank' href=\"".htmlspecialchars($line["comments"])."\">comments</a>";
3104                                 }
3105                         }
3106
3107                         if ($zoom_mode) {
3108                                 header("Content-Type: text/html");
3109                                 $rv['content'] .= "<html><head>
3110                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
3111                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
3112                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
3113                                         </head><body>";
3114                         }
3115
3116                         $title_escaped = htmlspecialchars($line['title']);
3117
3118                         $rv['content'] .= "<div id=\"PTITLE-$id\" style=\"display : none\">" .
3119                                 truncate_string(strip_tags($line['title']), 15) . "</div>";
3120
3121                         $rv['content'] .= "<div id=\"PTITLE-FULL-$id\" style=\"display : none\">" .
3122                                 strip_tags($line['title']) . "</div>";
3123
3124                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
3125
3126                         $rv['content'] .= "<div onclick=\"return postClicked(event, $id)\"
3127                                 class=\"postHeader\" id=\"POSTHDR-$id\">";
3128
3129                         $entry_author = $line["author"];
3130
3131                         if ($entry_author) {
3132                                 $entry_author = __(" - ") . $entry_author;
3133                         }
3134
3135                         $parsed_updated = make_local_datetime($link, $line["updated"], true,
3136                                 $owner_uid, true);
3137
3138                         $rv['content'] .= "<div class=\"postDate$rtl_class\">$parsed_updated</div>";
3139
3140                         if ($line["link"]) {
3141                                 $rv['content'] .= "<div class='postTitle'><a target='_blank'
3142                                         title=\"".htmlspecialchars($line['title'])."\"
3143                                         href=\"" .
3144                                         htmlspecialchars($line["link"]) . "\">" .
3145                                         $line["title"] .
3146                                         "<span class='author'>$entry_author</span></a></div>";
3147                         } else {
3148                                 $rv['content'] .= "<div class='postTitle'>" . $line["title"] . "$entry_author</div>";
3149                         }
3150
3151                         $tag_cache = $line["tag_cache"];
3152
3153                         if (!$tag_cache)
3154                                 $tags = get_article_tags($link, $id, $owner_uid);
3155                         else
3156                                 $tags = explode(",", $tag_cache);
3157
3158                         $tags_str = format_tags_string($tags, $id);
3159                         $tags_str_full = join(", ", $tags);
3160
3161                         if (!$tags_str_full) $tags_str_full = __("no tags");
3162
3163                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
3164
3165                         $rv['content'] .= "<div class='postTags' style='float : right'>
3166                                 <img src='".theme_image($link, 'images/tag.png')."'
3167                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
3168
3169                         if (!$zoom_mode) {
3170                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
3171                                         <a title=\"".__('Edit tags for this article')."\"
3172                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
3173
3174                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
3175                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
3176                                         position=\"below\">$tags_str_full</div>";
3177
3178                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/art-zoom.png')."\"
3179                                                 class='tagsPic' style=\"cursor : pointer\"
3180                                                 onclick=\"postOpenInNewTab(event, $id)\"
3181                                                 alt='Zoom' title='".__('Open article in new tab')."'>";
3182
3183                                 global $pluginhost;
3184
3185                                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_ARTICLE_BUTTON) as $p) {
3186                                         $rv['content'] .= $p->hook_article_button($line);
3187                                 }
3188
3189                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/digest_checkbox.png')."\"
3190                                                 class='tagsPic' style=\"cursor : pointer\"
3191                                                 onclick=\"closeArticlePanel($id)\"
3192                                                 title='".__('Close article')."'>";
3193
3194                         } else {
3195                                 $tags_str = strip_tags($tags_str);
3196                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
3197                         }
3198                         $rv['content'] .= "</div>";
3199                         $rv['content'] .= "<div clear='both'>$entry_comments</div>";
3200
3201                         if ($line["orig_feed_id"]) {
3202
3203                                 $tmp_result = db_query($link, "SELECT * FROM ttrss_archived_feeds
3204                                         WHERE id = ".$line["orig_feed_id"]);
3205
3206                                 if (db_num_rows($tmp_result) != 0) {
3207
3208                                         $rv['content'] .= "<div clear='both'>";
3209                                         $rv['content'] .= __("Originally from:");
3210
3211                                         $rv['content'] .= "&nbsp;";
3212
3213                                         $tmp_line = db_fetch_assoc($tmp_result);
3214
3215                                         $rv['content'] .= "<a target='_blank'
3216                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
3217                                                 $tmp_line['title'] . "</a>";
3218
3219                                         $rv['content'] .= "&nbsp;";
3220
3221                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3222                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.svg'></a>";
3223
3224                                         $rv['content'] .= "</div>";
3225                                 }
3226                         }
3227
3228                         $rv['content'] .= "</div>";
3229
3230                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3231                                 if ($line['note']) {
3232                                         $rv['content'] .= format_article_note($id, $line['note']);
3233                                 }
3234                         $rv['content'] .= "</div>";
3235
3236                         $rv['content'] .= "<div class=\"postIcon\">" .
3237                                 "<a target=\"_blank\" title=\"".__("Visit the website")."\"$
3238                                 href=\"".htmlspecialchars($feed_site_url)."\">".
3239                                 $feed_icon . "</a></div>";
3240
3241                         $rv['content'] .= "<div class=\"postContent\">";
3242
3243                         // N-grams
3244
3245                         if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_RELATED_THRESHOLD')) {
3246
3247                                 $ngram_result = db_query($link, "SELECT id,title FROM
3248                                                 ttrss_entries,ttrss_user_entries
3249                                         WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
3250                                                 AND similarity(title, '$title_escaped') >= "._NGRAM_TITLE_RELATED_THRESHOLD."
3251                                                 AND title != '$title_escaped'
3252                                                 AND owner_uid = $owner_uid");
3253
3254                                 if (db_num_rows($ngram_result) > 0) {
3255                                         $rv['content'] .= "<div dojoType=\"dijit.form.DropDownButton\">".
3256                                                 "<span>" . __('Related')."</span>";
3257                                         $rv['content'] .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3258
3259                                         while ($nline = db_fetch_assoc($ngram_result)) {
3260                                                 $rv['content'] .= "<div onclick=\"hlOpenInNewTab(null,".$nline['id'].")\"
3261                                                         dojoType=\"dijit.MenuItem\">".$nline['title']."</div>";
3262
3263                                         }
3264                                         $rv['content'] .= "</div></div><br/";
3265                                 }
3266                         }
3267
3268                         if ($cache_content && $line["cached_content"] != "") {
3269                                 $line["content"] =& $line["cached_content"];
3270                         }
3271
3272                         $article_content = sanitize($link, $line["content"], false, $owner_uid,
3273                                 $feed_site_url);
3274
3275                         $rv['content'] .= $article_content;
3276
3277                         $rv['content'] .= format_article_enclosures($link, $id,
3278                                 $always_display_enclosures, $article_content);
3279
3280                         $rv['content'] .= "</div>";
3281
3282                         $rv['content'] .= "</div>";
3283
3284                 }
3285
3286                 if ($zoom_mode) {
3287                         $rv['content'] .= "
3288                                 <div style=\"text-align : center\">
3289                                 <button onclick=\"return window.close()\">".
3290                                         __("Close this window")."</button></div>";
3291                         $rv['content'] .= "</body></html>";
3292                 }
3293
3294                 return $rv;
3295
3296         }
3297
3298         function print_checkpoint($n, $s) {
3299                 $ts = getmicrotime();
3300                 echo sprintf("<!-- CP[$n] %.4f seconds -->", $ts - $s);
3301                 return $ts;
3302         }
3303
3304         function sanitize_tag($tag) {
3305                 $tag = trim($tag);
3306
3307                 $tag = mb_strtolower($tag, 'utf-8');
3308
3309                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3310
3311 //              $tag = str_replace('"', "", $tag);
3312 //              $tag = str_replace("+", " ", $tag);
3313                 $tag = str_replace("technorati tag: ", "", $tag);
3314
3315                 return $tag;
3316         }
3317
3318         function get_self_url_prefix() {
3319                 if (strrpos(SELF_URL_PATH, "/") === strlen(SELF_URL_PATH)-1) {
3320                         return substr(SELF_URL_PATH, 0, strlen(SELF_URL_PATH)-1);
3321                 } else {
3322                         return SELF_URL_PATH;
3323                 }
3324         }
3325
3326         function opml_publish_url($link){
3327
3328                 $url_path = get_self_url_prefix();
3329                 $url_path .= "/opml.php?op=publish&key=" .
3330                         get_feed_access_key($link, 'OPML:Publish', false, $_SESSION["uid"]);
3331
3332                 return $url_path;
3333         }
3334
3335         /**
3336          * Purge a feed contents, marked articles excepted.
3337          *
3338          * @param mixed $link The database connection.
3339          * @param integer $id The id of the feed to purge.
3340          * @return void
3341          */
3342         function clear_feed_articles($link, $id) {
3343
3344                 if ($id != 0) {
3345                         $result = db_query($link, "DELETE FROM ttrss_user_entries
3346                         WHERE feed_id = '$id' AND marked = false AND owner_uid = " . $_SESSION["uid"]);
3347                 } else {
3348                         $result = db_query($link, "DELETE FROM ttrss_user_entries
3349                         WHERE feed_id IS NULL AND marked = false AND owner_uid = " . $_SESSION["uid"]);
3350                 }
3351
3352                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
3353                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
3354
3355                 ccache_update($link, $id, $_SESSION['uid']);
3356         } // function clear_feed_articles
3357
3358         /**
3359          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3360          *
3361          * @return string The Mozilla Firefox feed adding URL.
3362          */
3363         function add_feed_url() {
3364                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3365
3366                 $url_path = get_self_url_prefix() .
3367                         "/public.php?op=subscribe&feed_url=%s";
3368                 return $url_path;
3369         } // function add_feed_url
3370
3371         function encrypt_password($pass, $salt = '', $mode2 = false) {
3372                 if ($salt && $mode2) {
3373                         return "MODE2:" . hash('sha256', $salt . $pass);
3374                 } else if ($salt) {
3375                         return "SHA1X:" . sha1("$salt:$pass");
3376                 } else {
3377                         return "SHA1:" . sha1($pass);
3378                 }
3379         } // function encrypt_password
3380
3381         function load_filters($link, $feed_id, $owner_uid, $action_id = false) {
3382                 $filters = array();
3383
3384                 $cat_id = (int)getFeedCategory($link, $feed_id);
3385
3386                 $result = db_query($link, "SELECT * FROM ttrss_filters2 WHERE
3387                         owner_uid = $owner_uid AND enabled = true");
3388
3389                 $check_cats = join(",", array_merge(
3390                         getParentCategories($link, $cat_id, $owner_uid),
3391                         array($cat_id)));
3392
3393                 while ($line = db_fetch_assoc($result)) {
3394                         $filter_id = $line["id"];
3395
3396                         $result2 = db_query($link, "SELECT
3397                                 r.reg_exp, r.feed_id, r.cat_id, r.cat_filter, t.name AS type_name
3398                                 FROM ttrss_filters2_rules AS r,
3399                                 ttrss_filter_types AS t
3400                                 WHERE
3401                                         (cat_id IS NULL OR cat_id IN ($check_cats)) AND
3402                                         (feed_id IS NULL OR feed_id = '$feed_id') AND
3403                                         filter_type = t.id AND filter_id = '$filter_id'");
3404
3405                         $rules = array();
3406                         $actions = array();
3407
3408                         while ($rule_line = db_fetch_assoc($result2)) {
3409 #                               print_r($rule_line);
3410
3411                                 $rule = array();
3412                                 $rule["reg_exp"] = $rule_line["reg_exp"];
3413                                 $rule["type"] = $rule_line["type_name"];
3414
3415                                 array_push($rules, $rule);
3416                         }
3417
3418                         $result2 = db_query($link, "SELECT a.action_param,t.name AS type_name
3419                                 FROM ttrss_filters2_actions AS a,
3420                                 ttrss_filter_actions AS t
3421                                 WHERE
3422                                         action_id = t.id AND filter_id = '$filter_id'");
3423
3424                         while ($action_line = db_fetch_assoc($result2)) {
3425 #                               print_r($action_line);
3426
3427                                 $action = array();
3428                                 $action["type"] = $action_line["type_name"];
3429                                 $action["param"] = $action_line["action_param"];
3430
3431                                 array_push($actions, $action);
3432                         }
3433
3434
3435                         $filter = array();
3436                         $filter["match_any_rule"] = sql_bool_to_bool($line["match_any_rule"]);
3437                         $filter["rules"] = $rules;
3438                         $filter["actions"] = $actions;
3439
3440                         if (count($rules) > 0 && count($actions) > 0) {
3441                                 array_push($filters, $filter);
3442                         }
3443                 }
3444
3445                 return $filters;
3446         }
3447
3448         function get_score_pic($score) {
3449                 if ($score > 100) {
3450                         return "score_high.png";
3451                 } else if ($score > 0) {
3452                         return "score_half_high.png";
3453                 } else if ($score < -100) {
3454                         return "score_low.png";
3455                 } else if ($score < 0) {
3456                         return "score_half_low.png";
3457                 } else {
3458                         return "score_neutral.png";
3459                 }
3460         }
3461
3462         function feed_has_icon($id) {
3463                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3464         }
3465
3466         function init_connection($link) {
3467                 if ($link) {
3468
3469                         if (DB_TYPE == "pgsql") {
3470                                 pg_query($link, "set client_encoding = 'UTF-8'");
3471                                 pg_set_client_encoding("UNICODE");
3472                                 pg_query($link, "set datestyle = 'ISO, european'");
3473                                 pg_query($link, "set TIME ZONE 0");
3474                         } else {
3475                                 db_query($link, "SET time_zone = '+0:0'");
3476
3477                                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
3478                                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
3479                                 }
3480                         }
3481
3482                         global $pluginhost;
3483
3484                         $pluginhost = new PluginHost($link);
3485                         $pluginhost->load(PLUGINS, $pluginhost::KIND_ALL);
3486
3487                         return true;
3488                 } else {
3489                         print "Unable to connect to database:" . db_last_error();
3490                         return false;
3491                 }
3492         }
3493
3494         /* function ccache_zero($link, $feed_id, $owner_uid) {
3495                 db_query($link, "UPDATE ttrss_counters_cache SET
3496                         value = 0, updated = NOW() WHERE
3497                         feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3498         } */
3499
3500         function ccache_zero_all($link, $owner_uid) {
3501                 db_query($link, "UPDATE ttrss_counters_cache SET
3502                         value = 0 WHERE owner_uid = '$owner_uid'");
3503
3504                 db_query($link, "UPDATE ttrss_cat_counters_cache SET
3505                         value = 0 WHERE owner_uid = '$owner_uid'");
3506         }
3507
3508         function ccache_remove($link, $feed_id, $owner_uid, $is_cat = false) {
3509
3510                 if (!$is_cat) {
3511                         $table = "ttrss_counters_cache";
3512                 } else {
3513                         $table = "ttrss_cat_counters_cache";
3514                 }
3515
3516                 db_query($link, "DELETE FROM $table WHERE
3517                         feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3518
3519         }
3520
3521         function ccache_update_all($link, $owner_uid) {
3522
3523                 if (get_pref($link, 'ENABLE_FEED_CATS', $owner_uid)) {
3524
3525                         $result = db_query($link, "SELECT feed_id FROM ttrss_cat_counters_cache
3526                                 WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
3527
3528                         while ($line = db_fetch_assoc($result)) {
3529                                 ccache_update($link, $line["feed_id"], $owner_uid, true);
3530                         }
3531
3532                         /* We have to manually include category 0 */
3533
3534                         ccache_update($link, 0, $owner_uid, true);
3535
3536                 } else {
3537                         $result = db_query($link, "SELECT feed_id FROM ttrss_counters_cache
3538                                 WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
3539
3540                         while ($line = db_fetch_assoc($result)) {
3541                                 print ccache_update($link, $line["feed_id"], $owner_uid);
3542
3543                         }
3544
3545                 }
3546         }
3547
3548         function ccache_find($link, $feed_id, $owner_uid, $is_cat = false,
3549                 $no_update = false) {
3550
3551                 if (!is_numeric($feed_id)) return;
3552
3553                 if (!$is_cat) {
3554                         $table = "ttrss_counters_cache";
3555                         if ($feed_id > 0) {
3556                                 $tmp_result = db_query($link, "SELECT owner_uid FROM ttrss_feeds
3557                                         WHERE id = '$feed_id'");
3558                                 $owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
3559                         }
3560                 } else {
3561                         $table = "ttrss_cat_counters_cache";
3562                 }
3563
3564                 if (DB_TYPE == "pgsql") {
3565                         $date_qpart = "updated > NOW() - INTERVAL '15 minutes'";
3566                 } else if (DB_TYPE == "mysql") {
3567                         $date_qpart = "updated > DATE_SUB(NOW(), INTERVAL 15 MINUTE)";
3568                 }
3569
3570                 $result = db_query($link, "SELECT value FROM $table
3571                         WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id'
3572                         LIMIT 1");
3573
3574                 if (db_num_rows($result) == 1) {
3575                         return db_fetch_result($result, 0, "value");
3576                 } else {
3577                         if ($no_update) {
3578                                 return -1;
3579                         } else {
3580                                 return ccache_update($link, $feed_id, $owner_uid, $is_cat);
3581                         }
3582                 }
3583
3584         }
3585
3586         function ccache_update($link, $feed_id, $owner_uid, $is_cat = false,
3587                 $update_pcat = true) {
3588
3589                 if (!is_numeric($feed_id)) return;
3590
3591                 if (!$is_cat && $feed_id > 0) {
3592                         $tmp_result = db_query($link, "SELECT owner_uid FROM ttrss_feeds
3593                                 WHERE id = '$feed_id'");
3594                         $owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
3595                 }
3596
3597                 $prev_unread = ccache_find($link, $feed_id, $owner_uid, $is_cat, true);
3598
3599                 /* When updating a label, all we need to do is recalculate feed counters
3600                  * because labels are not cached */
3601
3602                 if ($feed_id < 0) {
3603                         ccache_update_all($link, $owner_uid);
3604                         return;
3605                 }
3606
3607                 if (!$is_cat) {
3608                         $table = "ttrss_counters_cache";
3609                 } else {
3610                         $table = "ttrss_cat_counters_cache";
3611                 }
3612
3613                 if ($is_cat && $feed_id >= 0) {
3614                         if ($feed_id != 0) {
3615                                 $cat_qpart = "cat_id = '$feed_id'";
3616                         } else {
3617                                 $cat_qpart = "cat_id IS NULL";
3618                         }
3619
3620                         /* Recalculate counters for child feeds */
3621
3622                         $result = db_query($link, "SELECT id FROM ttrss_feeds
3623                                                 WHERE owner_uid = '$owner_uid' AND $cat_qpart");
3624
3625                         while ($line = db_fetch_assoc($result)) {
3626                                 ccache_update($link, $line["id"], $owner_uid, false, false);
3627                         }
3628
3629                         $result = db_query($link, "SELECT SUM(value) AS sv
3630                                 FROM ttrss_counters_cache, ttrss_feeds
3631                                 WHERE id = feed_id AND $cat_qpart AND
3632                                 ttrss_feeds.owner_uid = '$owner_uid'");
3633
3634                         $unread = (int) db_fetch_result($result, 0, "sv");
3635
3636                 } else {
3637                         $unread = (int) getFeedArticles($link, $feed_id, $is_cat, true, $owner_uid);
3638                 }
3639
3640                 db_query($link, "BEGIN");
3641
3642                 $result = db_query($link, "SELECT feed_id FROM $table
3643                         WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id' LIMIT 1");
3644
3645                 if (db_num_rows($result) == 1) {
3646                         db_query($link, "UPDATE $table SET
3647                                 value = '$unread', updated = NOW() WHERE
3648                                 feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3649
3650                 } else {
3651                         db_query($link, "INSERT INTO $table
3652                                 (feed_id, value, owner_uid, updated)
3653                                 VALUES
3654                                 ($feed_id, $unread, $owner_uid, NOW())");
3655                 }
3656
3657                 db_query($link, "COMMIT");
3658
3659                 if ($feed_id > 0 && $prev_unread != $unread) {
3660
3661                         if (!$is_cat) {
3662
3663                                 /* Update parent category */
3664
3665                                 if ($update_pcat) {
3666
3667                                         $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
3668                                                 WHERE owner_uid = '$owner_uid' AND id = '$feed_id'");
3669
3670                                         $cat_id = (int) db_fetch_result($result, 0, "cat_id");
3671
3672                                         ccache_update($link, $cat_id, $owner_uid, true);
3673
3674                                 }
3675                         }
3676                 } else if ($feed_id < 0) {
3677                         ccache_update_all($link, $owner_uid);
3678                 }
3679
3680                 return $unread;
3681         }
3682
3683         /* function ccache_cleanup($link, $owner_uid) {
3684
3685                 if (DB_TYPE == "pgsql") {
3686                         db_query($link, "DELETE FROM ttrss_counters_cache AS c1 WHERE
3687                                 (SELECT count(*) FROM ttrss_counters_cache AS c2
3688                                         WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
3689                                         AND owner_uid = '$owner_uid'");
3690
3691                         db_query($link, "DELETE FROM ttrss_cat_counters_cache AS c1 WHERE
3692                                 (SELECT count(*) FROM ttrss_cat_counters_cache AS c2
3693                                         WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
3694                                         AND owner_uid = '$owner_uid'");
3695                 } else {
3696                         db_query($link, "DELETE c1 FROM
3697                                         ttrss_counters_cache AS c1,
3698                                         ttrss_counters_cache AS c2
3699                                 WHERE
3700                                         c1.owner_uid = '$owner_uid' AND
3701                                         c1.owner_uid = c2.owner_uid AND
3702                                         c1.feed_id = c2.feed_id");
3703
3704                         db_query($link, "DELETE c1 FROM
3705                                         ttrss_cat_counters_cache AS c1,
3706                                         ttrss_cat_counters_cache AS c2
3707                                 WHERE
3708                                         c1.owner_uid = '$owner_uid' AND
3709                                         c1.owner_uid = c2.owner_uid AND
3710                                         c1.feed_id = c2.feed_id");
3711
3712                 }
3713         } */
3714
3715         function label_find_id($link, $label, $owner_uid) {
3716                 $result = db_query($link,
3717                         "SELECT id FROM ttrss_labels2 WHERE caption = '$label'
3718                                 AND owner_uid = '$owner_uid' LIMIT 1");
3719
3720                 if (db_num_rows($result) == 1) {
3721                         return db_fetch_result($result, 0, "id");
3722                 } else {
3723                         return 0;
3724                 }
3725         }
3726
3727         function get_article_labels($link, $id, $owner_uid = false) {
3728                 $rv = array();
3729
3730                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3731
3732                 $result = db_query($link, "SELECT label_cache FROM
3733                         ttrss_user_entries WHERE ref_id = '$id' AND owner_uid = " .
3734                         $owner_uid);
3735
3736                 if (db_num_rows($result) > 0) {
3737                         $label_cache = db_fetch_result($result, 0, "label_cache");
3738
3739                         if ($label_cache) {
3740                                 $label_cache = json_decode($label_cache, true);
3741
3742                                 if ($label_cache["no-labels"] == 1)
3743                                         return $rv;
3744                                 else
3745                                         return $label_cache;
3746                         }
3747                 }
3748
3749                 $result = db_query($link,
3750                         "SELECT DISTINCT label_id,caption,fg_color,bg_color
3751                                 FROM ttrss_labels2, ttrss_user_labels2
3752                         WHERE id = label_id
3753                                 AND article_id = '$id'
3754                                 AND owner_uid = ". $owner_uid . "
3755                         ORDER BY caption");
3756
3757                 while ($line = db_fetch_assoc($result)) {
3758                         $rk = array($line["label_id"], $line["caption"], $line["fg_color"],
3759                                 $line["bg_color"]);
3760                         array_push($rv, $rk);
3761                 }
3762
3763                 if (count($rv) > 0)
3764                         label_update_cache($link, $owner_uid, $id, $rv);
3765                 else
3766                         label_update_cache($link, $owner_uid, $id, array("no-labels" => 1));
3767
3768                 return $rv;
3769         }
3770
3771
3772         function label_find_caption($link, $label, $owner_uid) {
3773                 $result = db_query($link,
3774                         "SELECT caption FROM ttrss_labels2 WHERE id = '$label'
3775                                 AND owner_uid = '$owner_uid' LIMIT 1");
3776
3777                 if (db_num_rows($result) == 1) {
3778                         return db_fetch_result($result, 0, "caption");
3779                 } else {
3780                         return "";
3781                 }
3782         }
3783
3784         function get_all_labels($link, $owner_uid) {
3785                 $rv = array();
3786
3787                 $result = db_query($link, "SELECT fg_color, bg_color, caption FROM ttrss_labels2 WHERE owner_uid = " . $owner_uid);
3788
3789                 while ($line = db_fetch_assoc($result)) {
3790                         array_push($rv, $line);
3791                 }
3792
3793                 return $rv;
3794         }
3795
3796         function label_update_cache($link, $owner_uid, $id, $labels = false, $force = false) {
3797
3798                 if ($force)
3799                         label_clear_cache($link, $id);
3800
3801                 if (!$labels)
3802                         $labels = get_article_labels($link, $id);
3803
3804                 $labels = db_escape_string(json_encode($labels));
3805
3806                 db_query($link, "UPDATE ttrss_user_entries SET
3807                         label_cache = '$labels' WHERE ref_id = '$id' AND  owner_uid = '$owner_uid'");
3808
3809         }
3810
3811         function label_clear_cache($link, $id) {
3812
3813                 db_query($link, "UPDATE ttrss_user_entries SET
3814                         label_cache = '' WHERE ref_id = '$id'");
3815
3816         }
3817
3818         function label_remove_article($link, $id, $label, $owner_uid) {
3819
3820                 $label_id = label_find_id($link, $label, $owner_uid);
3821
3822                 if (!$label_id) return;
3823
3824                 $result = db_query($link,
3825                         "DELETE FROM ttrss_user_labels2
3826                         WHERE
3827                                 label_id = '$label_id' AND
3828                                 article_id = '$id'");
3829
3830                 label_clear_cache($link, $id);
3831         }
3832
3833         function label_add_article($link, $id, $label, $owner_uid) {
3834
3835                 $label_id = label_find_id($link, $label, $owner_uid);
3836
3837                 if (!$label_id) return;
3838
3839                 $result = db_query($link,
3840                         "SELECT
3841                                 article_id FROM ttrss_labels2, ttrss_user_labels2
3842                         WHERE
3843                                 label_id = id AND
3844                                 label_id = '$label_id' AND
3845                                 article_id = '$id' AND owner_uid = '$owner_uid'
3846                         LIMIT 1");
3847
3848                 if (db_num_rows($result) == 0) {
3849                         db_query($link, "INSERT INTO ttrss_user_labels2
3850                                 (label_id, article_id) VALUES ('$label_id', '$id')");
3851                 }
3852
3853                 label_clear_cache($link, $id);
3854
3855         }
3856
3857         function label_remove($link, $id, $owner_uid) {
3858                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3859
3860                 db_query($link, "BEGIN");
3861
3862                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
3863                         WHERE id = '$id'");
3864
3865                 $caption = db_fetch_result($result, 0, "caption");
3866
3867                 $result = db_query($link, "DELETE FROM ttrss_labels2 WHERE id = '$id'
3868                         AND owner_uid = " . $owner_uid);
3869
3870                 if (db_affected_rows($link, $result) != 0 && $caption) {
3871
3872                         /* Remove access key for the label */
3873
3874                         $ext_id = -11 - $id;
3875
3876                         db_query($link, "DELETE FROM ttrss_access_keys WHERE
3877                                 feed_id = '$ext_id' AND owner_uid = $owner_uid");
3878
3879                         /* Disable filters that reference label being removed */
3880
3881                         db_query($link, "UPDATE ttrss_filters SET
3882                                 enabled = false WHERE action_param = '$caption'
3883                                         AND action_id = 7
3884                                         AND owner_uid = " . $owner_uid);
3885
3886                         /* Remove cached data */
3887
3888                         db_query($link, "UPDATE ttrss_user_entries SET label_cache = ''
3889                                 WHERE label_cache LIKE '%$caption%' AND owner_uid = " . $owner_uid);
3890
3891                 }
3892
3893                 db_query($link, "COMMIT");
3894         }
3895
3896         function label_create($link, $caption, $fg_color = '', $bg_color = '', $owner_uid) {
3897
3898                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
3899
3900                 db_query($link, "BEGIN");
3901
3902                 $result = false;
3903
3904                 $result = db_query($link, "SELECT id FROM ttrss_labels2
3905                         WHERE caption = '$caption' AND owner_uid = $owner_uid");
3906
3907                 if (db_num_rows($result) == 0) {
3908                         $result = db_query($link,
3909                                 "INSERT INTO ttrss_labels2 (caption,owner_uid,fg_color,bg_color)
3910                                         VALUES ('$caption', '$owner_uid', '$fg_color', '$bg_color')");
3911
3912                         $result = db_affected_rows($link, $result) != 0;
3913                 }
3914
3915                 db_query($link, "COMMIT");
3916
3917                 return $result;
3918         }
3919
3920         function format_tags_string($tags, $id) {
3921
3922                 $tags_str = "";
3923                 $tags_nolinks_str = "";
3924
3925                 $num_tags = 0;
3926
3927                 $tag_limit = 6;
3928
3929                 $formatted_tags = array();
3930
3931                 foreach ($tags as $tag) {
3932                         $num_tags++;
3933                         $tag_escaped = str_replace("'", "\\'", $tag);
3934
3935                         if (mb_strlen($tag) > 30) {
3936                                 $tag = truncate_string($tag, 30);
3937                         }
3938
3939                         $tag_str = "<a href=\"javascript:viewfeed('$tag_escaped')\">$tag</a>";
3940
3941                         array_push($formatted_tags, $tag_str);
3942
3943                         $tmp_tags_str = implode(", ", $formatted_tags);
3944
3945                         if ($num_tags == $tag_limit || mb_strlen($tmp_tags_str) > 150) {
3946                                 break;
3947                         }
3948                 }
3949
3950                 $tags_str = implode(", ", $formatted_tags);
3951
3952                 if ($num_tags < count($tags)) {
3953                         $tags_str .= ", &hellip;";
3954                 }
3955
3956                 if ($num_tags == 0) {
3957                         $tags_str = __("no tags");
3958                 }
3959
3960                 return $tags_str;
3961
3962         }
3963
3964         function format_article_labels($labels, $id) {
3965
3966                 $labels_str = "";
3967
3968                 foreach ($labels as $l) {
3969                         $labels_str .= sprintf("<span class='hlLabelRef'
3970                                 style='color : %s; background-color : %s'>%s</span>",
3971                                         $l[2], $l[3], $l[1]);
3972                         }
3973
3974                 return $labels_str;
3975
3976         }
3977
3978         function format_article_note($id, $note) {
3979
3980                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
3981                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
3982                         __('(edit note)')."</div>$note</div>";
3983
3984                 return $str;
3985         }
3986
3987         function toggle_collapse_cat($link, $cat_id, $mode) {
3988                 if ($cat_id > 0) {
3989                         $mode = bool_to_sql_bool($mode);
3990
3991                         db_query($link, "UPDATE ttrss_feed_categories SET
3992                                 collapsed = $mode WHERE id = '$cat_id' AND owner_uid = " .
3993                                 $_SESSION["uid"]);
3994                 } else {
3995                         $pref_name = '';
3996
3997                         switch ($cat_id) {
3998                         case -1:
3999                                 $pref_name = '_COLLAPSED_SPECIAL';
4000                                 break;
4001                         case -2:
4002                                 $pref_name = '_COLLAPSED_LABELS';
4003                                 break;
4004                         case 0:
4005                                 $pref_name = '_COLLAPSED_UNCAT';
4006                                 break;
4007                         }
4008
4009                         if ($pref_name) {
4010                                 if ($mode) {
4011                                         set_pref($link, $pref_name, 'true');
4012                                 } else {
4013                                         set_pref($link, $pref_name, 'false');
4014                                 }
4015                         }
4016                 }
4017         }
4018
4019         function remove_feed($link, $id, $owner_uid) {
4020
4021                 if ($id > 0) {
4022
4023                         /* save starred articles in Archived feed */
4024
4025                         db_query($link, "BEGIN");
4026
4027                         /* prepare feed if necessary */
4028
4029                         $result = db_query($link, "SELECT id FROM ttrss_archived_feeds
4030                                 WHERE id = '$id'");
4031
4032                         if (db_num_rows($result) == 0) {
4033                                 db_query($link, "INSERT INTO ttrss_archived_feeds
4034                                         (id, owner_uid, title, feed_url, site_url)
4035                                 SELECT id, owner_uid, title, feed_url, site_url from ttrss_feeds
4036                                 WHERE id = '$id'");
4037                         }
4038
4039                         db_query($link, "UPDATE ttrss_user_entries SET feed_id = NULL,
4040                                 orig_feed_id = '$id' WHERE feed_id = '$id' AND
4041                                         marked = true AND owner_uid = $owner_uid");
4042
4043                         /* Remove access key for the feed */
4044
4045                         db_query($link, "DELETE FROM ttrss_access_keys WHERE
4046                                 feed_id = '$id' AND owner_uid = $owner_uid");
4047
4048                         /* remove the feed */
4049
4050                         db_query($link, "DELETE FROM ttrss_feeds
4051                                         WHERE id = '$id' AND owner_uid = $owner_uid");
4052
4053                         db_query($link, "COMMIT");
4054
4055                         if (file_exists(ICONS_DIR . "/$id.ico")) {
4056                                 unlink(ICONS_DIR . "/$id.ico");
4057                         }
4058
4059                         ccache_remove($link, $id, $owner_uid);
4060
4061                 } else {
4062                         label_remove($link, -11-$id, $owner_uid);
4063                         ccache_remove($link, -11-$id, $owner_uid);
4064                 }
4065         }
4066
4067         function get_feed_category($link, $feed_cat, $parent_cat_id = false) {
4068                 if ($parent_cat_id) {
4069                         $parent_qpart = "parent_cat = '$parent_cat_id'";
4070                         $parent_insert = "'$parent_cat_id'";
4071                 } else {
4072                         $parent_qpart = "parent_cat IS NULL";
4073                         $parent_insert = "NULL";
4074                 }
4075
4076                 $result = db_query($link,
4077                         "SELECT id FROM ttrss_feed_categories
4078                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
4079
4080                 if (db_num_rows($result) == 0) {
4081                         return false;
4082                 } else {
4083                         return db_fetch_result($result, 0, "id");
4084                 }
4085         }
4086
4087         function add_feed_category($link, $feed_cat, $parent_cat_id = false) {
4088
4089                 if (!$feed_cat) return false;
4090
4091                 db_query($link, "BEGIN");
4092
4093                 if ($parent_cat_id) {
4094                         $parent_qpart = "parent_cat = '$parent_cat_id'";
4095                         $parent_insert = "'$parent_cat_id'";
4096                 } else {
4097                         $parent_qpart = "parent_cat IS NULL";
4098                         $parent_insert = "NULL";
4099                 }
4100
4101                 $result = db_query($link,
4102                         "SELECT id FROM ttrss_feed_categories
4103                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
4104
4105                 if (db_num_rows($result) == 0) {
4106
4107                         $result = db_query($link,
4108                                 "INSERT INTO ttrss_feed_categories (owner_uid,title,parent_cat)
4109                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat', $parent_insert)");
4110
4111                         db_query($link, "COMMIT");
4112
4113                         return true;
4114                 }
4115
4116                 return false;
4117         }
4118
4119         function remove_feed_category($link, $id, $owner_uid) {
4120
4121                 db_query($link, "DELETE FROM ttrss_feed_categories
4122                         WHERE id = '$id' AND owner_uid = $owner_uid");
4123
4124                 ccache_remove($link, $id, $owner_uid, true);
4125         }
4126
4127         function archive_article($link, $id, $owner_uid) {
4128                 db_query($link, "BEGIN");
4129
4130                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
4131                         WHERE ref_id = '$id' AND owner_uid = $owner_uid");
4132
4133                 if (db_num_rows($result) != 0) {
4134
4135                         /* prepare the archived table */
4136
4137                         $feed_id = (int) db_fetch_result($result, 0, "feed_id");
4138
4139                         if ($feed_id) {
4140                                 $result = db_query($link, "SELECT id FROM ttrss_archived_feeds
4141                                         WHERE id = '$feed_id'");
4142
4143                                 if (db_num_rows($result) == 0) {
4144                                         db_query($link, "INSERT INTO ttrss_archived_feeds
4145                                                 (id, owner_uid, title, feed_url, site_url)
4146                                         SELECT id, owner_uid, title, feed_url, site_url from ttrss_feeds
4147                                         WHERE id = '$feed_id'");
4148                                 }
4149
4150                                 db_query($link, "UPDATE ttrss_user_entries
4151                                         SET orig_feed_id = feed_id, feed_id = NULL
4152                                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
4153                         }
4154                 }
4155
4156                 db_query($link, "COMMIT");
4157         }
4158
4159         function getArticleFeed($link, $id) {
4160                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
4161                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
4162
4163                 if (db_num_rows($result) != 0) {
4164                         return db_fetch_result($result, 0, "feed_id");
4165                 } else {
4166                         return 0;
4167                 }
4168         }
4169
4170         /**
4171          * Fixes incomplete URLs by prepending "http://".
4172          * Also replaces feed:// with http://, and
4173          * prepends a trailing slash if the url is a domain name only.
4174          *
4175          * @param string $url Possibly incomplete URL
4176          *
4177          * @return string Fixed URL.
4178          */
4179         function fix_url($url) {
4180                 if (strpos($url, '://') === false) {
4181                         $url = 'http://' . $url;
4182                 } else if (substr($url, 0, 5) == 'feed:') {
4183                         $url = 'http:' . substr($url, 5);
4184                 }
4185
4186                 //prepend slash if the URL has no slash in it
4187                 // "http://www.example" -> "http://www.example/"
4188                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
4189                         $url .= '/';
4190                 }
4191
4192                 if ($url != "http:///")
4193                         return $url;
4194                 else
4195                         return '';
4196         }
4197
4198         function validate_feed_url($url) {
4199                 $parts = parse_url($url);
4200
4201                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
4202
4203         }
4204
4205         function get_article_enclosures($link, $id) {
4206
4207                 $query = "SELECT * FROM ttrss_enclosures
4208                         WHERE post_id = '$id' AND content_url != ''";
4209
4210                 $rv = array();
4211
4212                 $result = db_query($link, $query);
4213
4214                 if (db_num_rows($result) > 0) {
4215                         while ($line = db_fetch_assoc($result)) {
4216                                 array_push($rv, $line);
4217                         }
4218                 }
4219
4220                 return $rv;
4221         }
4222
4223         function api_get_feeds($link, $cat_id, $unread_only, $limit, $offset, $include_nested = false) {
4224
4225                         $feeds = array();
4226
4227                         /* Labels */
4228
4229                         if ($cat_id == -4 || $cat_id == -2) {
4230                                 $counters = getLabelCounters($link, true);
4231
4232                                 foreach (array_values($counters) as $cv) {
4233
4234                                         $unread = $cv["counter"];
4235
4236                                         if ($unread || !$unread_only) {
4237
4238                                                 $row = array(
4239                                                                 "id" => $cv["id"],
4240                                                                 "title" => $cv["description"],
4241                                                                 "unread" => $cv["counter"],
4242                                                                 "cat_id" => -2,
4243                                                         );
4244
4245                                                 array_push($feeds, $row);
4246                                         }
4247                                 }
4248                         }
4249
4250                         /* Virtual feeds */
4251
4252                         if ($cat_id == -4 || $cat_id == -1) {
4253                                 foreach (array(-1, -2, -3, -4, -6, 0) as $i) {
4254                                         $unread = getFeedUnread($link, $i);
4255
4256                                         if ($unread || !$unread_only) {
4257                                                 $title = getFeedTitle($link, $i);
4258
4259                                                 $row = array(
4260                                                                 "id" => $i,
4261                                                                 "title" => $title,
4262                                                                 "unread" => $unread,
4263                                                                 "cat_id" => -1,
4264                                                         );
4265                                                 array_push($feeds, $row);
4266                                         }
4267
4268                                 }
4269                         }
4270
4271                         /* Child cats */
4272
4273                         if ($include_nested && $cat_id) {
4274                                 $result = db_query($link, "SELECT
4275                                         id, title FROM ttrss_feed_categories
4276                                         WHERE parent_cat = '$cat_id' AND owner_uid = " . $_SESSION["uid"] .
4277                                 " ORDER BY id, title");
4278
4279                                 while ($line = db_fetch_assoc($result)) {
4280                                         $unread = getFeedUnread($link, $line["id"], true) +
4281                                                 getCategoryChildrenUnread($link, $line["id"]);
4282
4283                                         if ($unread || !$unread_only) {
4284                                                 $row = array(
4285                                                                 "id" => $line["id"],
4286                                                                 "title" => $line["title"],
4287                                                                 "unread" => $unread,
4288                                                                 "is_cat" => true,
4289                                                         );
4290                                                 array_push($feeds, $row);
4291                                         }
4292                                 }
4293                         }
4294
4295                         /* Real feeds */
4296
4297                         if ($limit) {
4298                                 $limit_qpart = "LIMIT $limit OFFSET $offset";
4299                         } else {
4300                                 $limit_qpart = "";
4301                         }
4302
4303                         if ($cat_id == -4 || $cat_id == -3) {
4304                                 $result = db_query($link, "SELECT
4305                                         id, feed_url, cat_id, title, order_id, ".
4306                                                 SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
4307                                                 FROM ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"] .
4308                                                 " ORDER BY cat_id, title " . $limit_qpart);
4309                         } else {
4310
4311                                 if ($cat_id)
4312                                         $cat_qpart = "cat_id = '$cat_id'";
4313                                 else
4314                                         $cat_qpart = "cat_id IS NULL";
4315
4316                                 $result = db_query($link, "SELECT
4317                                         id, feed_url, cat_id, title, order_id, ".
4318                                                 SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
4319                                                 FROM ttrss_feeds WHERE
4320                                                 $cat_qpart AND owner_uid = " . $_SESSION["uid"] .
4321                                                 " ORDER BY cat_id, title " . $limit_qpart);
4322                         }
4323
4324                         while ($line = db_fetch_assoc($result)) {
4325
4326                                 $unread = getFeedUnread($link, $line["id"]);
4327
4328                                 $has_icon = feed_has_icon($line['id']);
4329
4330                                 if ($unread || !$unread_only) {
4331
4332                                         $row = array(
4333                                                         "feed_url" => $line["feed_url"],
4334                                                         "title" => $line["title"],
4335                                                         "id" => (int)$line["id"],
4336                                                         "unread" => (int)$unread,
4337                                                         "has_icon" => $has_icon,
4338                                                         "cat_id" => (int)$line["cat_id"],
4339                                                         "last_updated" => strtotime($line["last_updated"]),
4340                                                         "order_id" => (int) $line["order_id"],
4341                                                 );
4342
4343                                         array_push($feeds, $row);
4344                                 }
4345                         }
4346
4347                 return $feeds;
4348         }
4349
4350         function api_get_headlines($link, $feed_id, $limit, $offset,
4351                                 $filter, $is_cat, $show_excerpt, $show_content, $view_mode, $order,
4352                                 $include_attachments, $since_id,
4353                                 $search = "", $search_mode = "", $match_on = "",
4354                                 $include_nested = false, $sanitize_content = true) {
4355
4356                         $qfh_ret = queryFeedHeadlines($link, $feed_id, $limit,
4357                                 $view_mode, $is_cat, $search, $search_mode, $match_on,
4358                                 $order, $offset, 0, false, $since_id, $include_nested);
4359
4360                         $result = $qfh_ret[0];
4361                         $feed_title = $qfh_ret[1];
4362
4363                         $headlines = array();
4364
4365                         while ($line = db_fetch_assoc($result)) {
4366                                 $is_updated = ($line["last_read"] == "" &&
4367                                         ($line["unread"] != "t" && $line["unread"] != "1"));
4368
4369                                 $tags = explode(",", $line["tag_cache"]);
4370                                 $labels = json_decode($line["label_cache"], true);
4371
4372                                 //if (!$tags) $tags = get_article_tags($link, $line["id"]);
4373                                 //if (!$labels) $labels = get_article_labels($link, $line["id"]);
4374
4375                                 $headline_row = array(
4376                                                 "id" => (int)$line["id"],
4377                                                 "unread" => sql_bool_to_bool($line["unread"]),
4378                                                 "marked" => sql_bool_to_bool($line["marked"]),
4379                                                 "published" => sql_bool_to_bool($line["published"]),
4380                                                 "updated" => strtotime($line["updated"]),
4381                                                 "is_updated" => $is_updated,
4382                                                 "title" => $line["title"],
4383                                                 "link" => $line["link"],
4384                                                 "feed_id" => $line["feed_id"],
4385                                                 "tags" => $tags,
4386                                         );
4387
4388                                         if ($include_attachments)
4389                                                 $headline_row['attachments'] = get_article_enclosures($link,
4390                                                         $line['id']);
4391
4392                                 if ($show_excerpt) {
4393                                         $excerpt = truncate_string(strip_tags($line["content_preview"]), 100);
4394                                         $headline_row["excerpt"] = $excerpt;
4395                                 }
4396
4397                                 if ($show_content) {
4398
4399                                         if ($line["cached_content"] != "") {
4400                                                 $line["content_preview"] =& $line["cached_content"];
4401                                         }
4402
4403                                         if ($sanitize_content) {
4404                                                 $headline_row["content"] = sanitize($link,
4405                                                         $line["content_preview"], false, false, $line["site_url"]);
4406                                         } else {
4407                                                 $headline_row["content"] = $line["content_preview"];
4408                                         }
4409                                 }
4410
4411                                 // unify label output to ease parsing
4412                                 if ($labels["no-labels"] == 1) $labels = array();
4413
4414                                 $headline_row["labels"] = $labels;
4415
4416                                 $headline_row["feed_title"] = $line["feed_title"];
4417
4418                                 $headline_row["comments_count"] = (int)$line["num_comments"];
4419                                 $headline_row["comments_link"] = $line["comments"];
4420
4421                                 $headline_row["always_display_attachments"] = sql_bool_to_bool($line["always_display_enclosures"]);
4422
4423                                 array_push($headlines, $headline_row);
4424                         }
4425
4426                         return $headlines;
4427         }
4428
4429         function generate_error_feed($link, $error) {
4430                 $reply = array();
4431
4432                 $reply['headlines']['id'] = -6;
4433                 $reply['headlines']['is_cat'] = false;
4434
4435                 $reply['headlines']['toolbar'] = '';
4436                 $reply['headlines']['content'] = "<div class='whiteBox'>". $error . "</div>";
4437
4438                 $reply['headlines-info'] = array("count" => 0,
4439                         "vgroup_last_feed" => '',
4440                         "unread" => 0,
4441                         "disable_cache" => true);
4442
4443                 return $reply;
4444         }
4445
4446
4447         function generate_dashboard_feed($link) {
4448                 $reply = array();
4449
4450                 $reply['headlines']['id'] = -5;
4451                 $reply['headlines']['is_cat'] = false;
4452
4453                 $reply['headlines']['toolbar'] = '';
4454                 $reply['headlines']['content'] = "<div class='whiteBox'>".__('No feed selected.');
4455
4456                 $reply['headlines']['content'] .= "<p class=\"small\"><span class=\"insensitive\">";
4457
4458                 $result = db_query($link, "SELECT ".SUBSTRING_FOR_DATE."(MAX(last_updated), 1, 19) AS last_updated FROM ttrss_feeds
4459                         WHERE owner_uid = " . $_SESSION['uid']);
4460
4461                 $last_updated = db_fetch_result($result, 0, "last_updated");
4462                 $last_updated = make_local_datetime($link, $last_updated, false);
4463
4464                 $reply['headlines']['content'] .= sprintf(__("Feeds last updated at %s"), $last_updated);
4465
4466                 $result = db_query($link, "SELECT COUNT(id) AS num_errors
4467                         FROM ttrss_feeds WHERE last_error != '' AND owner_uid = ".$_SESSION["uid"]);
4468
4469                 $num_errors = db_fetch_result($result, 0, "num_errors");
4470
4471                 if ($num_errors > 0) {
4472                         $reply['headlines']['content'] .= "<br/>";
4473                         $reply['headlines']['content'] .= "<a class=\"insensitive\" href=\"#\" onclick=\"showFeedsWithErrors()\">".
4474                                 __('Some feeds have update errors (click for details)')."</a>";
4475                 }
4476                 $reply['headlines']['content'] .= "</span></p>";
4477
4478                 $reply['headlines-info'] = array("count" => 0,
4479                         "vgroup_last_feed" => '',
4480                         "unread" => 0,
4481                         "disable_cache" => true);
4482
4483                 return $reply;
4484         }
4485
4486         function save_email_address($link, $email) {
4487                 // FIXME: implement persistent storage of emails
4488
4489                 if (!$_SESSION['stored_emails'])
4490                         $_SESSION['stored_emails'] = array();
4491
4492                 if (!in_array($email, $_SESSION['stored_emails']))
4493                         array_push($_SESSION['stored_emails'], $email);
4494         }
4495
4496         function update_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
4497                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4498
4499                 $sql_is_cat = bool_to_sql_bool($is_cat);
4500
4501                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
4502                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
4503                         AND owner_uid = " . $owner_uid);
4504
4505                 if (db_num_rows($result) == 1) {
4506                         $key = db_escape_string(sha1(uniqid(rand(), true)));
4507
4508                         db_query($link, "UPDATE ttrss_access_keys SET access_key = '$key'
4509                                 WHERE feed_id = '$feed_id' AND is_cat = $sql_is_cat
4510                                 AND owner_uid = " . $owner_uid);
4511
4512                         return $key;
4513
4514                 } else {
4515                         return get_feed_access_key($link, $feed_id, $is_cat, $owner_uid);
4516                 }
4517         }
4518
4519         function get_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
4520
4521                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4522
4523                 $sql_is_cat = bool_to_sql_bool($is_cat);
4524
4525                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
4526                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
4527                         AND owner_uid = " . $owner_uid);
4528
4529                 if (db_num_rows($result) == 1) {
4530                         return db_fetch_result($result, 0, "access_key");
4531                 } else {
4532                         $key = db_escape_string(sha1(uniqid(rand(), true)));
4533
4534                         $result = db_query($link, "INSERT INTO ttrss_access_keys
4535                                 (access_key, feed_id, is_cat, owner_uid)
4536                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
4537
4538                         return $key;
4539                 }
4540                 return false;
4541         }
4542
4543         function get_feeds_from_html($url, $content)
4544         {
4545                 $url     = fix_url($url);
4546                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
4547
4548                 libxml_use_internal_errors(true);
4549
4550                 $doc = new DOMDocument();
4551                 $doc->loadHTML($content);
4552                 $xpath = new DOMXPath($doc);
4553                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
4554                 $feedUrls = array();
4555                 foreach ($entries as $entry) {
4556                         if ($entry->hasAttribute('href')) {
4557                                 $title = $entry->getAttribute('title');
4558                                 if ($title == '') {
4559                                         $title = $entry->getAttribute('type');
4560                                 }
4561                                 $feedUrl = rewrite_relative_url(
4562                                         $baseUrl, $entry->getAttribute('href')
4563                                 );
4564                                 $feedUrls[$feedUrl] = $title;
4565                         }
4566                 }
4567                 return $feedUrls;
4568         }
4569
4570         function is_html($content) {
4571                 return preg_match("/<html|DOCTYPE html/i", substr($content, 0, 20)) !== 0;
4572         }
4573
4574         function url_is_html($url, $login = false, $pass = false) {
4575                 return is_html(fetch_file_contents($url, false, $login, $pass));
4576         }
4577
4578         function print_label_select($link, $name, $value, $attributes = "") {
4579
4580                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
4581                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
4582
4583                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
4584                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
4585
4586                 while ($line = db_fetch_assoc($result)) {
4587
4588                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
4589
4590                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
4591                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
4592
4593                 }
4594
4595 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
4596
4597                 print "</select>";
4598
4599
4600         }
4601
4602         function format_article_enclosures($link, $id, $always_display_enclosures,
4603                                         $article_content) {
4604
4605                 $result = get_article_enclosures($link, $id);
4606                 $rv = '';
4607
4608                 if (count($result) > 0) {
4609
4610                         $entries_html = array();
4611                         $entries = array();
4612
4613                         foreach ($result as $line) {
4614
4615                                 $url = $line["content_url"];
4616                                 $ctype = $line["content_type"];
4617
4618                                 if (!$ctype) $ctype = __("unknown type");
4619
4620                                 $filename = substr($url, strrpos($url, "/")+1);
4621
4622 #                               $player = format_inline_player($link, $url, $ctype);
4623
4624 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
4625 #                                       $filename . " (" . $ctype . ")" . "</a>";
4626
4627                                 $entry = "<div onclick=\"window.open('".htmlspecialchars($url)."')\"
4628                                         dojoType=\"dijit.MenuItem\">$filename ($ctype)</div>";
4629
4630                                 array_push($entries_html, $entry);
4631
4632                                 $entry = array();
4633
4634                                 $entry["type"] = $ctype;
4635                                 $entry["filename"] = $filename;
4636                                 $entry["url"] = $url;
4637
4638                                 array_push($entries, $entry);
4639                         }
4640
4641                         if (!get_pref($link, "STRIP_IMAGES")) {
4642                                 if ($always_display_enclosures ||
4643                                                         !preg_match("/<img/i", $article_content)) {
4644
4645                                         foreach ($entries as $entry) {
4646
4647                                                 if (preg_match("/image/", $entry["type"]) ||
4648                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
4649
4650                                                                 $rv .= "<p><img
4651                                                                 alt=\"".htmlspecialchars($entry["filename"])."\"
4652                                                                 src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
4653
4654                                                 }
4655                                         }
4656                                 }
4657                         }
4658
4659                         $rv .= "<br/><div dojoType=\"dijit.form.DropDownButton\">".
4660                                 "<span>" . __('Attachments')."</span>";
4661                         $rv .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
4662
4663                         foreach ($entries_html as $entry) { $rv .= $entry; };
4664
4665                         $rv .= "</div></div>";
4666                 }
4667
4668                 return $rv;
4669         }
4670
4671         function getLastArticleId($link) {
4672                 $result = db_query($link, "SELECT MAX(ref_id) AS id FROM ttrss_user_entries
4673                         WHERE owner_uid = " . $_SESSION["uid"]);
4674
4675                 if (db_num_rows($result) == 1) {
4676                         return db_fetch_result($result, 0, "id");
4677                 } else {
4678                         return -1;
4679                 }
4680         }
4681
4682         function build_url($parts) {
4683                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
4684         }
4685
4686         /**
4687          * Converts a (possibly) relative URL to a absolute one.
4688          *
4689          * @param string $url     Base URL (i.e. from where the document is)
4690          * @param string $rel_url Possibly relative URL in the document
4691          *
4692          * @return string Absolute URL
4693          */
4694         function rewrite_relative_url($url, $rel_url) {
4695                 if (strpos($rel_url, "magnet:") === 0) {
4696                         return $rel_url;
4697                 } else if (strpos($rel_url, "://") !== false) {
4698                         return $rel_url;
4699                 } else if (strpos($rel_url, "//") === 0) {
4700                         # protocol-relative URL (rare but they exist)
4701                         return $rel_url;
4702                 } else if (strpos($rel_url, "/") === 0)
4703                 {
4704                         $parts = parse_url($url);
4705                         $parts['path'] = $rel_url;
4706
4707                         return build_url($parts);
4708
4709                 } else {
4710                         $parts = parse_url($url);
4711                         if (!isset($parts['path'])) {
4712                                 $parts['path'] = '/';
4713                         }
4714                         $dir = $parts['path'];
4715                         if (substr($dir, -1) !== '/') {
4716                                 $dir = dirname($parts['path']);
4717                                 $dir !== '/' && $dir .= '/';
4718                         }
4719                         $parts['path'] = $dir . $rel_url;
4720
4721                         return build_url($parts);
4722                 }
4723         }
4724
4725         function sphinx_search($query, $offset = 0, $limit = 30) {
4726                 require_once 'lib/sphinxapi.php';
4727
4728                 $sphinxClient = new SphinxClient();
4729
4730                 $sphinxClient->SetServer('localhost', 9312);
4731                 $sphinxClient->SetConnectTimeout(1);
4732
4733                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
4734                         'feed_title' => 20));
4735
4736                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
4737                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
4738                 $sphinxClient->SetLimits($offset, $limit, 1000);
4739                 $sphinxClient->SetArrayResult(false);
4740                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
4741
4742                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
4743
4744                 $ids = array();
4745
4746                 if (is_array($result['matches'])) {
4747                         foreach (array_keys($result['matches']) as $int_id) {
4748                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
4749                                 array_push($ids, $ref_id);
4750                         }
4751                 }
4752
4753                 return $ids;
4754         }
4755
4756         function cleanup_tags($link, $days = 14, $limit = 1000) {
4757
4758                 if (DB_TYPE == "pgsql") {
4759                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
4760                 } else if (DB_TYPE == "mysql") {
4761                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
4762                 }
4763
4764                 $tags_deleted = 0;
4765
4766                 while ($limit > 0) {
4767                         $limit_part = 500;
4768
4769                         $query = "SELECT ttrss_tags.id AS id
4770                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
4771                                 WHERE post_int_id = int_id AND $interval_query AND
4772                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
4773
4774                         $result = db_query($link, $query);
4775
4776                         $ids = array();
4777
4778                         while ($line = db_fetch_assoc($result)) {
4779                                 array_push($ids, $line['id']);
4780                         }
4781
4782                         if (count($ids) > 0) {
4783                                 $ids = join(",", $ids);
4784                                 print ".";
4785
4786                                 $tmp_result = db_query($link, "DELETE FROM ttrss_tags WHERE id IN ($ids)");
4787                                 $tags_deleted += db_affected_rows($link, $tmp_result);
4788                         } else {
4789                                 break;
4790                         }
4791
4792                         $limit -= $limit_part;
4793                 }
4794
4795                 print "\n";
4796
4797                 return $tags_deleted;
4798         }
4799
4800         function print_user_stylesheet($link) {
4801                 $value = get_pref($link, 'USER_STYLESHEET');
4802
4803                 if ($value) {
4804                         print "<style type=\"text/css\">";
4805                         print str_replace("<br/>", "\n", $value);
4806                         print "</style>";
4807                 }
4808
4809         }
4810
4811         function rewrite_urls($html) {
4812                 libxml_use_internal_errors(true);
4813
4814                 $charset_hack = '<head>
4815                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
4816                 </head>';
4817
4818                 $doc = new DOMDocument();
4819                 $doc->loadHTML($charset_hack . $html);
4820                 $xpath = new DOMXPath($doc);
4821
4822                 $entries = $xpath->query('//*/text()');
4823
4824                 foreach ($entries as $entry) {
4825                         if (strstr($entry->wholeText, "://") !== false) {
4826                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
4827                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
4828
4829                                 if ($text != $entry->wholeText) {
4830                                         $cdoc = new DOMDocument();
4831                                         $cdoc->loadHTML($charset_hack . $text);
4832
4833
4834                                         foreach ($cdoc->childNodes as $cnode) {
4835                                                 $cnode = $doc->importNode($cnode, true);
4836
4837                                                 if ($cnode) {
4838                                                         $entry->parentNode->insertBefore($cnode);
4839                                                 }
4840                                         }
4841
4842                                         $entry->parentNode->removeChild($entry);
4843
4844                                 }
4845                         }
4846                 }
4847
4848                 $node = $doc->getElementsByTagName('body')->item(0);
4849
4850                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
4851                 if ($node)
4852                         return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
4853                 else
4854                         return $html;
4855         }
4856
4857         function filter_to_sql($link, $filter, $owner_uid) {
4858                 $query = array();
4859
4860                 if (DB_TYPE == "pgsql")
4861                         $reg_qpart = "~";
4862                 else
4863                         $reg_qpart = "REGEXP";
4864
4865                 foreach ($filter["rules"] AS $rule) {
4866                         $regexp_valid = preg_match('/' . $rule['reg_exp'] . '/',
4867                                 $rule['reg_exp']) !== FALSE;
4868
4869                         if ($regexp_valid) {
4870
4871                                 $rule['reg_exp'] = db_escape_string($rule['reg_exp']);
4872
4873                                 switch ($rule["type"]) {
4874                                         case "title":
4875                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
4876                                                         $rule['reg_exp'] . "')";
4877                                                 break;
4878                                         case "content":
4879                                                 $qpart = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
4880                                                         $rule['reg_exp'] . "')";
4881                                                 break;
4882                                         case "both":
4883                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
4884                                                         $rule['reg_exp'] . "') OR LOWER(" .
4885                                                         "ttrss_entries.content) $reg_qpart LOWER('" . $rule['reg_exp'] . "')";
4886                                                 break;
4887                                         case "tag":
4888                                                 $qpart = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
4889                                                         $rule['reg_exp'] . "')";
4890                                                 break;
4891                                         case "link":
4892                                                 $qpart = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
4893                                                         $rule['reg_exp'] . "')";
4894                                                 break;
4895                                         case "author":
4896                                                 $qpart = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
4897                                                         $rule['reg_exp'] . "')";
4898                                                 break;
4899                                 }
4900
4901                                 if (isset($rule["feed_id"]) && $rule["feed_id"] > 0) {
4902                                         $qpart .= " AND feed_id = " . db_escape_string($rule["feed_id"]);
4903                                 }
4904
4905                                 if (isset($rule["cat_id"])) {
4906
4907                                         if ($rule["cat_id"] > 0) {
4908                                                 $children = getChildCategories($link, $rule["cat_id"], $owner_uid);
4909                                                 array_push($children, $rule["cat_id"]);
4910
4911                                                 $children = join(",", $children);
4912
4913                                                 $cat_qpart = "cat_id IN ($children)";
4914                                         } else {
4915                                                 $cat_qpart = "cat_id IS NULL";
4916                                         }
4917
4918                                         $qpart .= " AND $cat_qpart";
4919                                 }
4920
4921                                 array_push($query, "($qpart)");
4922
4923                         }
4924                 }
4925
4926                 if (count($query) > 0) {
4927                         return "(" . join($filter["match_any_rule"] ? "OR" : "AND", $query) . ")";
4928                 } else {
4929                         return "(false)";
4930                 }
4931         }
4932
4933         if (!function_exists('gzdecode')) {
4934                 function gzdecode($string) { // no support for 2nd argument
4935                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
4936                                 base64_encode($string));
4937                 }
4938         }
4939
4940         function get_random_bytes($length) {
4941                 if (function_exists('openssl_random_pseudo_bytes')) {
4942                         return openssl_random_pseudo_bytes($length);
4943                 } else {
4944                         $output = "";
4945
4946                         for ($i = 0; $i < $length; $i++)
4947                                 $output .= chr(mt_rand(0, 255));
4948
4949                         return $output;
4950                 }
4951         }
4952
4953         function read_stdin() {
4954                 $fp = fopen("php://stdin", "r");
4955
4956                 if ($fp) {
4957                         $line = trim(fgets($fp));
4958                         fclose($fp);
4959                         return $line;
4960                 }
4961
4962                 return null;
4963         }
4964
4965         function tmpdirname($path, $prefix) {
4966                 // Use PHP's tmpfile function to create a temporary
4967                 // directory name. Delete the file and keep the name.
4968                 $tempname = tempnam($path,$prefix);
4969                 if (!$tempname)
4970                         return false;
4971
4972                 if (!unlink($tempname))
4973                         return false;
4974
4975        return $tempname;
4976         }
4977
4978         function getFeedCategory($link, $feed) {
4979                 $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
4980                         WHERE id = '$feed'");
4981
4982                 if (db_num_rows($result) > 0) {
4983                         return db_fetch_result($result, 0, "cat_id");
4984                 } else {
4985                         return false;
4986                 }
4987
4988         }
4989
4990         function create_published_article($link, $title, $url, $content, $labels_str,
4991                         $owner_uid) {
4992
4993                 $guid = sha1($url . $owner_uid); // include owner_uid to prevent global GUID clash
4994                 $content_hash = sha1($content);
4995
4996                 if ($labels_str != "") {
4997                         $labels = explode(",", $labels_str);
4998                 } else {
4999                         $labels = array();
5000                 }
5001
5002                 $rc = false;
5003
5004                 if (!$title) $title = $url;
5005                 if (!$title && !$url) return false;
5006
5007                 if (filter_var($url, FILTER_VALIDATE_URL) === FALSE) return false;
5008
5009                 db_query($link, "BEGIN");
5010
5011                 // only check for our user data here, others might have shared this with different content etc
5012                 $result = db_query($link, "SELECT id FROM ttrss_entries, ttrss_user_entries WHERE
5013                         link = '$url' AND ref_id = id AND owner_uid = '$owner_uid' LIMIT 1");
5014
5015                 if (db_num_rows($result) != 0) {
5016                         $ref_id = db_fetch_result($result, 0, "id");
5017
5018                         $result = db_query($link, "SELECT int_id FROM ttrss_user_entries WHERE
5019                                 ref_id = '$ref_id' AND owner_uid = '$owner_uid' LIMIT 1");
5020
5021                         if (db_num_rows($result) != 0) {
5022                                 $int_id = db_fetch_result($result, 0, "int_id");
5023
5024                                 db_query($link, "UPDATE ttrss_entries SET
5025                                         content = '$content', content_hash = '$content_hash' WHERE id = '$ref_id'");
5026
5027                                 db_query($link, "UPDATE ttrss_user_entries SET published = true WHERE
5028                                                 int_id = '$int_id' AND owner_uid = '$owner_uid'");
5029                         } else {
5030
5031                                 db_query($link, "INSERT INTO ttrss_user_entries
5032                                         (ref_id, uuid, feed_id, orig_feed_id, owner_uid, published, tag_cache, label_cache, last_read, note, unread)
5033                                         VALUES
5034                                         ('$ref_id', '', NULL, NULL, $owner_uid, true, '', '', NOW(), '', false)");
5035                         }
5036
5037                         if (count($labels) != 0) {
5038                                 foreach ($labels as $label) {
5039                                         label_add_article($link, $ref_id, trim($label), $owner_uid);
5040                                 }
5041                         }
5042
5043                         $rc = true;
5044
5045                 } else {
5046                         $result = db_query($link, "INSERT INTO ttrss_entries
5047                                 (title, guid, link, updated, content, content_hash, date_entered, date_updated)
5048                                 VALUES
5049                                 ('$title', '$guid', '$url', NOW(), '$content', '$content_hash', NOW(), NOW())");
5050
5051                         $result = db_query($link, "SELECT id FROM ttrss_entries WHERE guid = '$guid'");
5052
5053                         if (db_num_rows($result) != 0) {
5054                                 $ref_id = db_fetch_result($result, 0, "id");
5055
5056                                 db_query($link, "INSERT INTO ttrss_user_entries
5057                                         (ref_id, uuid, feed_id, orig_feed_id, owner_uid, published, tag_cache, label_cache, last_read, note, unread)
5058                                         VALUES
5059                                         ('$ref_id', '', NULL, NULL, $owner_uid, true, '', '', NOW(), '', false)");
5060
5061                                 if (count($labels) != 0) {
5062                                         foreach ($labels as $label) {
5063                                                 label_add_article($link, $ref_id, trim($label), $owner_uid);
5064                                         }
5065                                 }
5066
5067                                 $rc = true;
5068                         }
5069                 }
5070
5071                 db_query($link, "COMMIT");
5072
5073                 return $rc;
5074         }
5075
5076         function implements_interface($class, $interface) {
5077                 return in_array($interface, class_implements($class));
5078         }
5079
5080 ?>