include/functions.php

   1 <?php
   2         define('EXPECTED_CONFIG_VERSION', 26);
   3         define('SCHEMA_VERSION', 106);
   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                                         "cs_CZ" => "Česky",
  48                                         "en_US" => "English",
  49                                         "es_ES" => "Español",
  50                                         "de_DE" => "Deutsch",
  51                                         "fr_FR" => "Français",
  52                                         "hu_HU" => "Magyar (Hungarian)",
  53                                         "it_IT" => "Italiano",
  54                                         "ja_JP" => "日本語 (Japanese)",
  55                                         "lv_LV" => "Latviešu",
  56                                         "nb_NO" => "Norwegian bokmål",
  57                                         "nl_NL" => "Dutch",
  58                                         "pl_PL" => "Polski",
  59                                         "ru_RU" => "Русский",
  60                                         "pt_BR" => "Portuguese/Brazil",
  61                                         "zh_CN" => "Simplified Chinese");
  62
  63                 return $tr;
  64         }
  65
  66         require_once "lib/accept-to-gettext.php";
  67         require_once "lib/gettext/gettext.inc";
  68
  69
  70         function startup_gettext() {
  71
  72                 # Get locale from Accept-Language header
  73                 $lang = al2gt(array_keys(get_translations()), "text/html");
  74
  75                 if (defined('_TRANSLATION_OVERRIDE_DEFAULT')) {
  76                         $lang = _TRANSLATION_OVERRIDE_DEFAULT;
  77                 }
  78
  79                 if ($_SESSION["language"] && $_SESSION["language"] != "auto") {
  80                         $lang = $_SESSION["language"];
  81                 }
  82
  83                 if ($lang) {
  84                         if (defined('LC_MESSAGES')) {
  85                                 _setlocale(LC_MESSAGES, $lang);
  86                         } else if (defined('LC_ALL')) {
  87                                 _setlocale(LC_ALL, $lang);
  88                         }
  89
  90                         _bindtextdomain("messages", "locale");
  91
  92                         _textdomain("messages");
  93                         _bind_textdomain_codeset("messages", "UTF-8");
  94                 }
  95         }
  96
  97         startup_gettext();
  98
  99         require_once 'db-prefs.php';
 100         require_once 'version.php';
 101         require_once 'ccache.php';
 102         require_once 'labels.php';
 103
 104         define('SELF_USER_AGENT', 'Tiny Tiny RSS/' . VERSION . ' (http://tt-rss.org/)');
 105         ini_set('user_agent', SELF_USER_AGENT);
 106
 107         require_once 'lib/pubsubhubbub/publisher.php';
 108
 109         $tz_offset = -1;
 110         $utc_tz = new DateTimeZone('UTC');
 111         $schema_version = false;
 112
 113         /**
 114          * Print a timestamped debug message.
 115          *
 116          * @param string $msg The debug message.
 117          * @return void
 118          */
 119         function _debug($msg) {
 120                 $ts = strftime("%H:%M:%S", time());
 121                 if (function_exists('posix_getpid')) {
 122                         $ts = "$ts/" . posix_getpid();
 123                 }
 124
 125                 if (!(defined('QUIET') && QUIET)) {
 126                         print "[$ts] $msg\n";
 127                 }
 128
 129                 if (defined('LOGFILE'))  {
 130                         $fp = fopen(LOGFILE, 'a+');
 131
 132                         if ($fp) {
 133                                 fputs($fp, "[$ts] $msg\n");
 134                                 fclose($fp);
 135                         }
 136                 }
 137
 138         } // function _debug
 139
 140         /**
 141          * Purge a feed old posts.
 142          *
 143          * @param mixed $link A database connection.
 144          * @param mixed $feed_id The id of the purged feed.
 145          * @param mixed $purge_interval Olderness of purged posts.
 146          * @param boolean $debug Set to True to enable the debug. False by default.
 147          * @access public
 148          * @return void
 149          */
 150         function purge_feed($link, $feed_id, $purge_interval, $debug = false) {
 151
 152                 if (!$purge_interval) $purge_interval = feed_purge_interval($link, $feed_id);
 153
 154                 $rows = -1;
 155
 156                 $result = db_query($link,
 157                         "SELECT owner_uid FROM ttrss_feeds WHERE id = '$feed_id'");
 158
 159                 $owner_uid = false;
 160
 161                 if (db_num_rows($result) == 1) {
 162                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 163                 }
 164
 165                 if ($purge_interval == -1 || !$purge_interval) {
 166                         if ($owner_uid) {
 167                                 ccache_update($link, $feed_id, $owner_uid);
 168                         }
 169                         return;
 170                 }
 171
 172                 if (!$owner_uid) return;
 173
 174                 if (FORCE_ARTICLE_PURGE == 0) {
 175                         $purge_unread = get_pref($link, "PURGE_UNREAD_ARTICLES",
 176                                 $owner_uid, false);
 177                 } else {
 178                         $purge_unread = true;
 179                         $purge_interval = FORCE_ARTICLE_PURGE;
 180                 }
 181
 182                 if (!$purge_unread) $query_limit = " unread = false AND ";
 183
 184                 if (DB_TYPE == "pgsql") {
 185                         $pg_version = get_pgsql_version($link);
 186
 187                         if (preg_match("/^7\./", $pg_version) || preg_match("/^8\.0/", $pg_version)) {
 188
 189                                 $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 190                                         ttrss_entries.id = ref_id AND
 191                                         marked = false AND
 192                                         feed_id = '$feed_id' AND
 193                                         $query_limit
 194                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 195
 196                         } else {
 197
 198                                 $result = db_query($link, "DELETE FROM ttrss_user_entries
 199                                         USING ttrss_entries
 200                                         WHERE ttrss_entries.id = ref_id AND
 201                                         marked = false AND
 202                                         feed_id = '$feed_id' AND
 203                                         $query_limit
 204                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 205                         }
 206
 207                         $rows = pg_affected_rows($result);
 208
 209                 } else {
 210
 211 /*                      $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 212                                 marked = false AND feed_id = '$feed_id' AND
 213                                 (SELECT date_updated FROM ttrss_entries WHERE
 214                                         id = ref_id) < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)"); */
 215
 216                         $result = db_query($link, "DELETE FROM ttrss_user_entries
 217                                 USING ttrss_user_entries, ttrss_entries
 218                                 WHERE ttrss_entries.id = ref_id AND
 219                                 marked = false AND
 220                                 feed_id = '$feed_id' AND
 221                                 $query_limit
 222                                 ttrss_entries.date_updated < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)");
 223
 224                         $rows = mysql_affected_rows($link);
 225
 226                 }
 227
 228                 ccache_update($link, $feed_id, $owner_uid);
 229
 230                 if ($debug) {
 231                         _debug("Purged feed $feed_id ($purge_interval): deleted $rows articles");
 232                 }
 233
 234                 return $rows;
 235         } // function purge_feed
 236
 237         function feed_purge_interval($link, $feed_id) {
 238
 239                 $result = db_query($link, "SELECT purge_interval, owner_uid FROM ttrss_feeds
 240                         WHERE id = '$feed_id'");
 241
 242                 if (db_num_rows($result) == 1) {
 243                         $purge_interval = db_fetch_result($result, 0, "purge_interval");
 244                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 245
 246                         if ($purge_interval == 0) $purge_interval = get_pref($link,
 247                                 'PURGE_OLD_DAYS', $owner_uid);
 248
 249                         return $purge_interval;
 250
 251                 } else {
 252                         return -1;
 253                 }
 254         }
 255
 256         function purge_orphans($link, $do_output = false) {
 257
 258                 // purge orphaned posts in main content table
 259                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
 260                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
 261
 262                 if ($do_output) {
 263                         $rows = db_affected_rows($link, $result);
 264                         _debug("Purged $rows orphaned posts.");
 265                 }
 266         }
 267
 268         function get_feed_update_interval($link, $feed_id) {
 269                 $result = db_query($link, "SELECT owner_uid, update_interval FROM
 270                         ttrss_feeds WHERE id = '$feed_id'");
 271
 272                 if (db_num_rows($result) == 1) {
 273                         $update_interval = db_fetch_result($result, 0, "update_interval");
 274                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 275
 276                         if ($update_interval != 0) {
 277                                 return $update_interval;
 278                         } else {
 279                                 return get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $owner_uid, false);
 280                         }
 281
 282                 } else {
 283                         return -1;
 284                 }
 285         }
 286
 287         function fetch_file_contents($url, $type = false, $login = false, $pass = false, $post_query = false, $timeout = false) {
 288                 $login = urlencode($login);
 289                 $pass = urlencode($pass);
 290
 291                 global $fetch_last_error;
 292
 293                 if (function_exists('curl_init') && !ini_get("open_basedir")) {
 294
 295                         if (ini_get("safe_mode")) {
 296                                 $ch = curl_init(geturl($url));
 297                         } else {
 298                                 $ch = curl_init($url);
 299                         }
 300
 301                         curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout ? $timeout : 15);
 302                         curl_setopt($ch, CURLOPT_TIMEOUT, $timeout ? $timeout : 45);
 303                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, !ini_get("safe_mode"));
 304                         curl_setopt($ch, CURLOPT_MAXREDIRS, 20);
 305                         curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
 306                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 307                         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 308                         curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 309                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 310                         curl_setopt($ch, CURLOPT_ENCODING , "gzip");
 311                         curl_setopt($ch, CURLOPT_REFERER, $url);
 312
 313                         if ($post_query) {
 314                                 curl_setopt($ch, CURLOPT_POST, true);
 315                                 curl_setopt($ch, CURLOPT_POSTFIELDS, $post_query);
 316                         }
 317
 318                         if ($login && $pass)
 319                                 curl_setopt($ch, CURLOPT_USERPWD, "$login:$pass");
 320
 321                         $contents = @curl_exec($ch);
 322
 323                         if (curl_errno($ch) === 23 || curl_errno($ch) === 61) {
 324                                 curl_setopt($ch, CURLOPT_ENCODING, 'none');
 325                                 $contents = @curl_exec($ch);
 326                         }
 327
 328                         if ($contents === false) {
 329                                 $fetch_last_error = curl_errno($ch) . " " . curl_error($ch);
 330                                 curl_close($ch);
 331                                 return false;
 332                         }
 333
 334                         $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 335                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 336
 337                         if ($http_code != 200 || $type && strpos($content_type, "$type") === false) {
 338                                 if (curl_errno($ch) != 0) {
 339                                         $fetch_last_error = curl_errno($ch) . " " . curl_error($ch);
 340                                 } else {
 341                                         $fetch_last_error = "HTTP Code: $http_code";
 342                                 }
 343                                 curl_close($ch);
 344                                 return false;
 345                         }
 346
 347                         curl_close($ch);
 348
 349                         return $contents;
 350                 } else {
 351                         if ($login && $pass ){
 352                                 $url_parts = array();
 353
 354                                 preg_match("/(^[^:]*):\/\/(.*)/", $url, $url_parts);
 355
 356                                 if ($url_parts[1] && $url_parts[2]) {
 357                                         $url = $url_parts[1] . "://$login:$pass@" . $url_parts[2];
 358                                 }
 359                         }
 360
 361                         $data = @file_get_contents($url);
 362
 363                         @$gzdecoded = gzdecode($data);
 364                         if ($gzdecoded) $data = $gzdecoded;
 365
 366                         if (!$data && function_exists('error_get_last')) {
 367                                 $error = error_get_last();
 368                                 $fetch_last_error = $error["message"];
 369                         }
 370                         return $data;
 371                 }
 372
 373         }
 374
 375         /**
 376          * Try to determine the favicon URL for a feed.
 377          * adapted from wordpress favicon plugin by Jeff Minard (http://thecodepro.com/)
 378          * http://dev.wp-plugins.org/file/favatars/trunk/favatars.php
 379          *
 380          * @param string $url A feed or page URL
 381          * @access public
 382          * @return mixed The favicon URL, or false if none was found.
 383          */
 384         function get_favicon_url($url) {
 385
 386                 $favicon_url = false;
 387
 388                 if ($html = @fetch_file_contents($url)) {
 389
 390                         libxml_use_internal_errors(true);
 391
 392                         $doc = new DOMDocument();
 393                         $doc->loadHTML($html);
 394                         $xpath = new DOMXPath($doc);
 395
 396                         $base = $xpath->query('/html/head/base');
 397                         foreach ($base as $b) {
 398                                 $url = $b->getAttribute("href");
 399                                 break;
 400                         }
 401
 402                         $entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon"]');
 403                         if (count($entries) > 0) {
 404                                 foreach ($entries as $entry) {
 405                                         $favicon_url = rewrite_relative_url($url, $entry->getAttribute("href"));
 406                                         break;
 407                                 }
 408                         }
 409                 }
 410
 411                 if (!$favicon_url)
 412                         $favicon_url = rewrite_relative_url($url, "/favicon.ico");
 413
 414                 return $favicon_url;
 415         } // function get_favicon_url
 416
 417         function check_feed_favicon($site_url, $feed, $link) {
 418 #               print "FAVICON [$site_url]: $favicon_url\n";
 419
 420                 $icon_file = ICONS_DIR . "/$feed.ico";
 421
 422                 if (!file_exists($icon_file)) {
 423                         $favicon_url = get_favicon_url($site_url);
 424
 425                         if ($favicon_url) {
 426                                 // Limiting to "image" type misses those served with text/plain
 427                                 $contents = fetch_file_contents($favicon_url); // , "image");
 428
 429                                 if ($contents) {
 430                                         // Crude image type matching.
 431                                         // Patterns gleaned from the file(1) source code.
 432                                         if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
 433                                                 // 0       string  \000\000\001\000        MS Windows icon resource
 434                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
 435                                         }
 436                                         elseif (preg_match('/^GIF8/', $contents)) {
 437                                                 // 0       string          GIF8            GIF image data
 438                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
 439                                         }
 440                                         elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
 441                                                 // 0       string          \x89PNG\x0d\x0a\x1a\x0a         PNG image data
 442                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
 443                                         }
 444                                         elseif (preg_match('/^\xff\xd8/', $contents)) {
 445                                                 // 0       beshort         0xffd8          JPEG image data
 446                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
 447                                         }
 448                                         else {
 449                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
 450                                                 $contents = "";
 451                                         }
 452                                 }
 453
 454                                 if ($contents) {
 455                                         $fp = @fopen($icon_file, "w");
 456
 457                                         if ($fp) {
 458                                                 fwrite($fp, $contents);
 459                                                 fclose($fp);
 460                                                 chmod($icon_file, 0644);
 461                                         }
 462                                 }
 463                         }
 464                 }
 465         }
 466
 467         function print_select($id, $default, $values, $attributes = "") {
 468                 print "<select name=\"$id\" id=\"$id\" $attributes>";
 469                 foreach ($values as $v) {
 470                         if ($v == $default)
 471                                 $sel = "selected=\"1\"";
 472                          else
 473                                 $sel = "";
 474
 475                         $v = trim($v);
 476
 477                         print "<option value=\"$v\" $sel>$v</option>";
 478                 }
 479                 print "</select>";
 480         }
 481
 482         function print_select_hash($id, $default, $values, $attributes = "") {
 483                 print "<select name=\"$id\" id='$id' $attributes>";
 484                 foreach (array_keys($values) as $v) {
 485                         if ($v == $default)
 486                                 $sel = 'selected="selected"';
 487                          else
 488                                 $sel = "";
 489
 490                         $v = trim($v);
 491
 492                         print "<option $sel value=\"$v\">".$values[$v]."</option>";
 493                 }
 494
 495                 print "</select>";
 496         }
 497
 498         function print_radio($id, $default, $true_is, $values, $attributes = "") {
 499                 foreach ($values as $v) {
 500
 501                         if ($v == $default)
 502                                 $sel = "checked";
 503                          else
 504                                 $sel = "";
 505
 506                         if ($v == $true_is) {
 507                                 $sel .= " value=\"1\"";
 508                         } else {
 509                                 $sel .= " value=\"0\"";
 510                         }
 511
 512                         print "<input class=\"noborder\" dojoType=\"dijit.form.RadioButton\"
 513                                 type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 514
 515                 }
 516         }
 517
 518         function initialize_user_prefs($link, $uid, $profile = false) {
 519
 520                 $uid = db_escape_string($link, $uid);
 521
 522                 if (!$profile) {
 523                         $profile = "NULL";
 524                         $profile_qpart = "AND profile IS NULL";
 525                 } else {
 526                         $profile_qpart = "AND profile = '$profile'";
 527                 }
 528
 529                 if (get_schema_version($link) < 63) $profile_qpart = "";
 530
 531                 db_query($link, "BEGIN");
 532
 533                 $result = db_query($link, "SELECT pref_name,def_value FROM ttrss_prefs");
 534
 535                 $u_result = db_query($link, "SELECT pref_name
 536                         FROM ttrss_user_prefs WHERE owner_uid = '$uid' $profile_qpart");
 537
 538                 $active_prefs = array();
 539
 540                 while ($line = db_fetch_assoc($u_result)) {
 541                         array_push($active_prefs, $line["pref_name"]);
 542                 }
 543
 544                 while ($line = db_fetch_assoc($result)) {
 545                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 546 //                              print "adding " . $line["pref_name"] . "<br>";
 547
 548                                 if (get_schema_version($link) < 63) {
 549                                         db_query($link, "INSERT INTO ttrss_user_prefs
 550                                                 (owner_uid,pref_name,value) VALUES
 551                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 552
 553                                 } else {
 554                                         db_query($link, "INSERT INTO ttrss_user_prefs
 555                                                 (owner_uid,pref_name,value, profile) VALUES
 556                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."', $profile)");
 557                                 }
 558
 559                         }
 560                 }
 561
 562                 db_query($link, "COMMIT");
 563
 564         }
 565
 566         function get_ssl_certificate_id() {
 567                 if ($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"]) {
 568                         return sha1($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"] .
 569                                 $_SERVER["REDIRECT_SSL_CLIENT_V_START"] .
 570                                 $_SERVER["REDIRECT_SSL_CLIENT_V_END"] .
 571                                 $_SERVER["REDIRECT_SSL_CLIENT_S_DN"]);
 572                 }
 573                 return "";
 574         }
 575
 576         function authenticate_user($link, $login, $password, $check_only = false) {
 577
 578                 if (!SINGLE_USER_MODE) {
 579
 580                         $user_id = false;
 581
 582                         global $pluginhost;
 583                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_AUTH_USER) as $plugin) {
 584
 585                                 $user_id = (int) $plugin->authenticate($login, $password);
 586
 587                                 if ($user_id) {
 588                                         $_SESSION["auth_module"] = strtolower(get_class($plugin));
 589                                         break;
 590                                 }
 591                         }
 592
 593                         if ($user_id && !$check_only) {
 594                                 $_SESSION["uid"] = $user_id;
 595
 596                                 $result = db_query($link, "SELECT login,access_level,pwd_hash FROM ttrss_users
 597                                         WHERE id = '$user_id'");
 598
 599                                 $_SESSION["name"] = db_fetch_result($result, 0, "login");
 600                                 $_SESSION["access_level"] = db_fetch_result($result, 0, "access_level");
 601                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 602
 603                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 604                                         $_SESSION["uid"]);
 605
 606                                 $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 607                                 $_SESSION["pwd_hash"] = db_fetch_result($result, 0, "pwd_hash");
 608
 609                                 $_SESSION["last_version_check"] = time();
 610
 611                                 initialize_user_prefs($link, $_SESSION["uid"]);
 612
 613                                 return true;
 614                         }
 615
 616                         return false;
 617
 618                 } else {
 619
 620                         $_SESSION["uid"] = 1;
 621                         $_SESSION["name"] = "admin";
 622                         $_SESSION["access_level"] = 10;
 623
 624                         $_SESSION["hide_hello"] = true;
 625                         $_SESSION["hide_logout"] = true;
 626
 627                         $_SESSION["auth_module"] = false;
 628
 629                         if (!$_SESSION["csrf_token"]) {
 630                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 631                         }
 632
 633                         $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 634
 635                         initialize_user_prefs($link, $_SESSION["uid"]);
 636
 637                         return true;
 638                 }
 639         }
 640
 641         function make_password($length = 8) {
 642
 643                 $password = "";
 644                 $possible = "0123456789abcdfghjkmnpqrstvwxyzABCDFGHJKMNPQRSTVWXYZ";
 645
 646         $i = 0;
 647
 648                 while ($i < $length) {
 649                         $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 650
 651                         if (!strstr($password, $char)) {
 652                                 $password .= $char;
 653                                 $i++;
 654                         }
 655                 }
 656                 return $password;
 657         }
 658
 659         // this is called after user is created to initialize default feeds, labels
 660         // or whatever else
 661
 662         // user preferences are checked on every login, not here
 663
 664         function initialize_user($link, $uid) {
 665
 666                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 667                         values ('$uid', 'Tiny Tiny RSS: New Releases',
 668                         'http://tt-rss.org/releases.rss')");
 669
 670                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 671                         values ('$uid', 'Tiny Tiny RSS: Forum',
 672                                 'http://tt-rss.org/forum/rss.php')");
 673         }
 674
 675         function logout_user() {
 676                 session_destroy();
 677                 if (isset($_COOKIE[session_name()])) {
 678                    setcookie(session_name(), '', time()-42000, '/');
 679                 }
 680         }
 681
 682         function validate_csrf($csrf_token) {
 683                 return $csrf_token == $_SESSION['csrf_token'];
 684         }
 685
 686         function validate_session($link) {
 687                 if (SINGLE_USER_MODE) return true;
 688
 689                 $check_ip = $_SESSION['ip_address'];
 690
 691                 switch (SESSION_CHECK_ADDRESS) {
 692                 case 0:
 693                         $check_ip = '';
 694                         break;
 695                 case 1:
 696                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 697                         break;
 698                 case 2:
 699                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.'));
 700                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 701                         break;
 702                 };
 703
 704                 if ($check_ip && strpos($_SERVER['REMOTE_ADDR'], $check_ip) !== 0) {
 705                         $_SESSION["login_error_msg"] =
 706                                 __("Session failed to validate (incorrect IP)");
 707                         return false;
 708                 }
 709
 710                 if ($_SESSION["ref_schema_version"] != get_schema_version($link, true))
 711                         return false;
 712
 713                 if ($_SESSION["uid"]) {
 714
 715                         $result = db_query($link,
 716                                 "SELECT pwd_hash FROM ttrss_users WHERE id = '".$_SESSION["uid"]."'");
 717
 718                         $pwd_hash = db_fetch_result($result, 0, "pwd_hash");
 719
 720                         if ($pwd_hash != $_SESSION["pwd_hash"]) {
 721                                 return false;
 722                         }
 723                 }
 724
 725 /*              if ($_SESSION["cookie_lifetime"] && $_SESSION["uid"]) {
 726
 727                         //print_r($_SESSION);
 728
 729                         if (time() > $_SESSION["cookie_lifetime"]) {
 730                                 return false;
 731                         }
 732                 } */
 733
 734                 return true;
 735         }
 736
 737         function load_user_plugins($link, $owner_uid) {
 738                 if ($owner_uid) {
 739                         $plugins = get_pref($link, "_ENABLED_PLUGINS", $owner_uid);
 740
 741                         global $pluginhost;
 742                         $pluginhost->load($plugins, $pluginhost::KIND_USER, $owner_uid);
 743
 744                         if (get_schema_version($link) > 100) {
 745                                 $pluginhost->load_data();
 746                         }
 747                 }
 748         }
 749
 750         function login_sequence($link) {
 751                 $_SESSION["prefs_cache"] = false;
 752
 753                 if (SINGLE_USER_MODE) {
 754                         authenticate_user($link, "admin", null);
 755                         cache_prefs($link);
 756                         load_user_plugins($link, $_SESSION["uid"]);
 757                 } else {
 758                         if (!$_SESSION["uid"] || !validate_session($link)) {
 759
 760                                 if (AUTH_AUTO_LOGIN && authenticate_user($link, null, null)) {
 761                                     $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 762                                 } else {
 763                                          authenticate_user($link, null, null, true);
 764                                 }
 765
 766                                 if (!$_SESSION["uid"]) render_login_form($link);
 767
 768                         } else {
 769                                 /* bump login timestamp */
 770                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 771                                         $_SESSION["uid"]);
 772                                 $_SESSION["last_login_update"] = time();
 773                         }
 774
 775                         if ($_SESSION["uid"] && $_SESSION["language"] && SESSION_COOKIE_LIFETIME > 0) {
 776                                 setcookie("ttrss_lang", $_SESSION["language"],
 777                                         time() + SESSION_COOKIE_LIFETIME);
 778                         }
 779
 780                         if ($_SESSION["uid"]) {
 781                                 cache_prefs($link);
 782                                 load_user_plugins($link, $_SESSION["uid"]);
 783
 784                                 /* cleanup ccache */
 785
 786                                 db_query($link, "DELETE FROM ttrss_counters_cache WHERE owner_uid = ".
 787                                         $_SESSION["uid"] . " AND
 788                                                 (SELECT COUNT(id) FROM ttrss_feeds WHERE
 789                                                         ttrss_feeds.id = feed_id) = 0");
 790
 791                                 db_query($link, "DELETE FROM ttrss_cat_counters_cache WHERE owner_uid = ".
 792                                         $_SESSION["uid"] . " AND
 793                                                 (SELECT COUNT(id) FROM ttrss_feed_categories WHERE
 794                                                         ttrss_feed_categories.id = feed_id) = 0");
 795
 796                         }
 797
 798                 }
 799         }
 800
 801         function truncate_string($str, $max_len, $suffix = '&hellip;') {
 802                 if (mb_strlen($str, "utf-8") > $max_len - 3) {
 803                         return mb_substr($str, 0, $max_len, "utf-8") . $suffix;
 804                 } else {
 805                         return $str;
 806                 }
 807         }
 808
 809         function convert_timestamp($timestamp, $source_tz, $dest_tz) {
 810
 811                 try {
 812                         $source_tz = new DateTimeZone($source_tz);
 813                 } catch (Exception $e) {
 814                         $source_tz = new DateTimeZone('UTC');
 815                 }
 816
 817                 try {
 818                         $dest_tz = new DateTimeZone($dest_tz);
 819                 } catch (Exception $e) {
 820                         $dest_tz = new DateTimeZone('UTC');
 821                 }
 822
 823                 $dt = new DateTime(date('Y-m-d H:i:s', $timestamp), $source_tz);
 824                 return $dt->format('U') + $dest_tz->getOffset($dt);
 825         }
 826
 827         function make_local_datetime($link, $timestamp, $long, $owner_uid = false,
 828                                         $no_smart_dt = false) {
 829
 830                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 831                 if (!$timestamp) $timestamp = '1970-01-01 0:00';
 832
 833                 global $utc_tz;
 834                 global $tz_offset;
 835
 836                 # We store date in UTC internally
 837                 $dt = new DateTime($timestamp, $utc_tz);
 838
 839                 if ($tz_offset == -1) {
 840
 841                         $user_tz_string = get_pref($link, 'USER_TIMEZONE', $owner_uid);
 842
 843                         try {
 844                                 $user_tz = new DateTimeZone($user_tz_string);
 845                         } catch (Exception $e) {
 846                                 $user_tz = $utc_tz;
 847                         }
 848
 849                         $tz_offset = $user_tz->getOffset($dt);
 850                 }
 851
 852                 $user_timestamp = $dt->format('U') + $tz_offset;
 853
 854                 if (!$no_smart_dt) {
 855                         return smart_date_time($link, $user_timestamp,
 856                                 $tz_offset, $owner_uid);
 857                 } else {
 858                         if ($long)
 859                                 $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 860                         else
 861                                 $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 862
 863                         return date($format, $user_timestamp);
 864                 }
 865         }
 866
 867         function smart_date_time($link, $timestamp, $tz_offset = 0, $owner_uid = false) {
 868                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 869
 870                 if (date("Y.m.d", $timestamp) == date("Y.m.d", time() + $tz_offset)) {
 871                         return date("G:i", $timestamp);
 872                 } else if (date("Y", $timestamp) == date("Y", time() + $tz_offset)) {
 873                         $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 874                         return date($format, $timestamp);
 875                 } else {
 876                         $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 877                         return date($format, $timestamp);
 878                 }
 879         }
 880
 881         function sql_bool_to_bool($s) {
 882                 if ($s == "t" || $s == "1" || strtolower($s) == "true") {
 883                         return true;
 884                 } else {
 885                         return false;
 886                 }
 887         }
 888
 889         function bool_to_sql_bool($s) {
 890                 if ($s) {
 891                         return "true";
 892                 } else {
 893                         return "false";
 894                 }
 895         }
 896
 897         // Session caching removed due to causing wrong redirects to upgrade
 898         // script when get_schema_version() is called on an obsolete session
 899         // created on a previous schema version.
 900         function get_schema_version($link, $nocache = false) {
 901                 global $schema_version;
 902
 903                 if (!$schema_version) {
 904                         $result = db_query($link, "SELECT schema_version FROM ttrss_version");
 905                         $version = db_fetch_result($result, 0, "schema_version");
 906                         $schema_version = $version;
 907                         return $version;
 908                 } else {
 909                         return $schema_version;
 910                 }
 911         }
 912
 913         function sanity_check($link) {
 914                 require_once 'errors.php';
 915
 916                 $error_code = 0;
 917                 $schema_version = get_schema_version($link, true);
 918
 919                 if ($schema_version != SCHEMA_VERSION) {
 920                         $error_code = 5;
 921                 }
 922
 923                 if (DB_TYPE == "mysql") {
 924                         $result = db_query($link, "SELECT true", false);
 925                         if (db_num_rows($result) != 1) {
 926                                 $error_code = 10;
 927                         }
 928                 }
 929
 930                 if (db_escape_string($link, "testTEST") != "testTEST") {
 931                         $error_code = 12;
 932                 }
 933
 934                 return array("code" => $error_code, "message" => $ERRORS[$error_code]);
 935         }
 936
 937         function file_is_locked($filename) {
 938                 if (function_exists('flock')) {
 939                         $fp = @fopen(LOCK_DIRECTORY . "/$filename", "r");
 940                         if ($fp) {
 941                                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 942                                         flock($fp, LOCK_UN);
 943                                         fclose($fp);
 944                                         return false;
 945                                 }
 946                                 fclose($fp);
 947                                 return true;
 948                         } else {
 949                                 return false;
 950                         }
 951                 }
 952                 return true; // consider the file always locked and skip the test
 953         }
 954
 955         function make_lockfile($filename) {
 956                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
 957
 958                 if ($fp && flock($fp, LOCK_EX | LOCK_NB)) {
 959                         if (function_exists('posix_getpid')) {
 960                                 fwrite($fp, posix_getpid() . "\n");
 961                         }
 962                         return $fp;
 963                 } else {
 964                         return false;
 965                 }
 966         }
 967
 968         function make_stampfile($filename) {
 969                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
 970
 971                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 972                         fwrite($fp, time() . "\n");
 973                         flock($fp, LOCK_UN);
 974                         fclose($fp);
 975                         return true;
 976                 } else {
 977                         return false;
 978                 }
 979         }
 980
 981         function sql_random_function() {
 982                 if (DB_TYPE == "mysql") {
 983                         return "RAND()";
 984                 } else {
 985                         return "RANDOM()";
 986                 }
 987         }
 988
 989         function catchup_feed($link, $feed, $cat_view, $owner_uid = false, $max_id = false) {
 990
 991                         if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 992
 993                         //if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
 994
 995                         $ref_check_qpart = ($max_id &&
 996                                 !get_pref($link, 'REVERSE_HEADLINES')) ? "ref_id <= '$max_id'" : "true";
 997
 998                         if (is_numeric($feed)) {
 999                                 if ($cat_view) {
1000
1001                                         if ($feed >= 0) {
1002
1003                                                 if ($feed > 0) {
1004                                                         $children = getChildCategories($link, $feed, $owner_uid);
1005                                                         array_push($children, $feed);
1006
1007                                                         $children = join(",", $children);
1008
1009                                                         $cat_qpart = "cat_id IN ($children)";
1010                                                 } else {
1011                                                         $cat_qpart = "cat_id IS NULL";
1012                                                 }
1013
1014                                                 db_query($link, "UPDATE ttrss_user_entries
1015                                                         SET unread = false,last_read = NOW()
1016                                                         WHERE feed_id IN (SELECT id FROM ttrss_feeds WHERE $cat_qpart)
1017                                                         AND $ref_check_qpart AND unread = true
1018                                                         AND owner_uid = $owner_uid");
1019
1020                                         } else if ($feed == -2) {
1021
1022                                                 db_query($link, "UPDATE ttrss_user_entries
1023                                                         SET unread = false,last_read = NOW() WHERE (SELECT COUNT(*)
1024                                                                 FROM ttrss_user_labels2 WHERE article_id = ref_id) > 0
1025                                                                 AND $ref_check_qpart
1026                                                                 AND unread = true AND owner_uid = $owner_uid");
1027                                         }
1028
1029                                 } else if ($feed > 0) {
1030
1031                                         db_query($link, "UPDATE ttrss_user_entries
1032                                                         SET unread = false,last_read = NOW()
1033                                                         WHERE feed_id = '$feed'
1034                                                         AND $ref_check_qpart AND unread = true
1035                                                         AND owner_uid = $owner_uid");
1036
1037                                 } else if ($feed < 0 && $feed > -10) { // special, like starred
1038
1039                                         if ($feed == -1) {
1040                                                 db_query($link, "UPDATE ttrss_user_entries
1041                                                         SET unread = false,last_read = NOW()
1042                                                         WHERE marked = true
1043                                                         AND $ref_check_qpart AND unread = true
1044                                                         AND owner_uid = $owner_uid");
1045                                         }
1046
1047                                         if ($feed == -2) {
1048                                                 db_query($link, "UPDATE ttrss_user_entries
1049                                                         SET unread = false,last_read = NOW()
1050                                                         WHERE published = true
1051                                                         AND $ref_check_qpart AND unread = true
1052                                                         AND owner_uid = $owner_uid");
1053                                         }
1054
1055                                         if ($feed == -3) {
1056
1057                                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE");
1058
1059                                                 if (DB_TYPE == "pgsql") {
1060                                                         $match_part = "updated > NOW() - INTERVAL '$intl hour' ";
1061                                                 } else {
1062                                                         $match_part = "updated > DATE_SUB(NOW(),
1063                                                                 INTERVAL $intl HOUR) ";
1064                                                 }
1065
1066                                                 $result = db_query($link, "SELECT id FROM ttrss_entries,
1067                                                         ttrss_user_entries WHERE $match_part AND
1068                                                         unread = true AND
1069                                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
1070                                                         owner_uid = $owner_uid");
1071
1072                                                 $affected_ids = array();
1073
1074                                                 while ($line = db_fetch_assoc($result)) {
1075                                                         array_push($affected_ids, $line["id"]);
1076                                                 }
1077
1078                                                 catchupArticlesById($link, $affected_ids, 0);
1079                                         }
1080
1081                                         if ($feed == -4) {
1082                                                 db_query($link, "UPDATE ttrss_user_entries
1083                                                         SET unread = false,last_read = NOW()
1084                                                         WHERE $ref_check_qpart AND unread = true AND
1085                                                         owner_uid = $owner_uid");
1086                                         }
1087
1088                                 } else if ($feed < -10) { // label
1089
1090                                         $label_id = -$feed - 11;
1091
1092                                         db_query($link, "UPDATE ttrss_user_entries, ttrss_user_labels2
1093                                                 SET unread = false, last_read = NOW()
1094                                                         WHERE label_id = '$label_id' AND unread = true
1095                                                         AND $ref_check_qpart
1096                                                         AND owner_uid = '$owner_uid' AND ref_id = article_id");
1097
1098                                 }
1099
1100                                 ccache_update($link, $feed, $owner_uid, $cat_view);
1101
1102                         } else { // tag
1103                                 db_query($link, "BEGIN");
1104
1105                                 $tag_name = db_escape_string($link, $feed);
1106
1107                                 $result = db_query($link, "SELECT post_int_id FROM ttrss_tags
1108                                         WHERE tag_name = '$tag_name' AND owner_uid = $owner_uid");
1109
1110                                 while ($line = db_fetch_assoc($result)) {
1111                                         db_query($link, "UPDATE ttrss_user_entries SET
1112                                                 unread = false, last_read = NOW()
1113                                                 WHERE $ref_check_qpart AND unread = true
1114                                                 AND int_id = " . $line["post_int_id"]);
1115                                 }
1116                                 db_query($link, "COMMIT");
1117                         }
1118         }
1119
1120         function getAllCounters($link) {
1121                 $data = getGlobalCounters($link);
1122
1123                 $data = array_merge($data, getVirtCounters($link));
1124                 $data = array_merge($data, getLabelCounters($link));
1125                 $data = array_merge($data, getFeedCounters($link, $active_feed));
1126                 $data = array_merge($data, getCategoryCounters($link));
1127
1128                 return $data;
1129         }
1130
1131         function getCategoryTitle($link, $cat_id) {
1132
1133                 if ($cat_id == -1) {
1134                         return __("Special");
1135                 } else if ($cat_id == -2) {
1136                         return __("Labels");
1137                 } else {
1138
1139                         $result = db_query($link, "SELECT title FROM ttrss_feed_categories WHERE
1140                                 id = '$cat_id'");
1141
1142                         if (db_num_rows($result) == 1) {
1143                                 return db_fetch_result($result, 0, "title");
1144                         } else {
1145                                 return __("Uncategorized");
1146                         }
1147                 }
1148         }
1149
1150
1151         function getCategoryCounters($link) {
1152                 $ret_arr = array();
1153
1154                 /* Labels category */
1155
1156                 $cv = array("id" => -2, "kind" => "cat",
1157                         "counter" => getCategoryUnread($link, -2));
1158
1159                 array_push($ret_arr, $cv);
1160
1161                 $result = db_query($link, "SELECT id AS cat_id, value AS unread,
1162                         (SELECT COUNT(id) FROM ttrss_feed_categories AS c2
1163                                 WHERE c2.parent_cat = ttrss_feed_categories.id) AS num_children
1164                         FROM ttrss_feed_categories, ttrss_cat_counters_cache
1165                         WHERE ttrss_cat_counters_cache.feed_id = id AND
1166                         ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid AND
1167                         ttrss_feed_categories.owner_uid = " . $_SESSION["uid"]);
1168
1169                 while ($line = db_fetch_assoc($result)) {
1170                         $line["cat_id"] = (int) $line["cat_id"];
1171
1172                         if ($line["num_children"] > 0) {
1173                                 $child_counter = getCategoryChildrenUnread($link, $line["cat_id"], $_SESSION["uid"]);
1174                         } else {
1175                                 $child_counter = 0;
1176                         }
1177
1178                         $cv = array("id" => $line["cat_id"], "kind" => "cat",
1179                                 "counter" => $line["unread"] + $child_counter);
1180
1181                         array_push($ret_arr, $cv);
1182                 }
1183
1184                 /* Special case: NULL category doesn't actually exist in the DB */
1185
1186                 $cv = array("id" => 0, "kind" => "cat",
1187                         "counter" => (int) ccache_find($link, 0, $_SESSION["uid"], true));
1188
1189                 array_push($ret_arr, $cv);
1190
1191                 return $ret_arr;
1192         }
1193
1194         // only accepts real cats (>= 0)
1195         function getCategoryChildrenUnread($link, $cat, $owner_uid = false) {
1196                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1197
1198                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories WHERE parent_cat = '$cat'
1199                                 AND owner_uid = $owner_uid");
1200
1201                 $unread = 0;
1202
1203                 while ($line = db_fetch_assoc($result)) {
1204                         $unread += getCategoryUnread($link, $line["id"], $owner_uid);
1205                         $unread += getCategoryChildrenUnread($link, $line["id"], $owner_uid);
1206                 }
1207
1208                 return $unread;
1209         }
1210
1211         function getCategoryUnread($link, $cat, $owner_uid = false) {
1212
1213                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1214
1215                 if ($cat >= 0) {
1216
1217                         if ($cat != 0) {
1218                                 $cat_query = "cat_id = '$cat'";
1219                         } else {
1220                                 $cat_query = "cat_id IS NULL";
1221                         }
1222
1223                         $result = db_query($link, "SELECT id FROM ttrss_feeds WHERE $cat_query
1224                                         AND owner_uid = " . $owner_uid);
1225
1226                         $cat_feeds = array();
1227                         while ($line = db_fetch_assoc($result)) {
1228                                 array_push($cat_feeds, "feed_id = " . $line["id"]);
1229                         }
1230
1231                         if (count($cat_feeds) == 0) return 0;
1232
1233                         $match_part = implode(" OR ", $cat_feeds);
1234
1235                         $result = db_query($link, "SELECT COUNT(int_id) AS unread
1236                                 FROM ttrss_user_entries
1237                                 WHERE   unread = true AND ($match_part)
1238                                 AND owner_uid = " . $owner_uid);
1239
1240                         $unread = 0;
1241
1242                         # this needs to be rewritten
1243                         while ($line = db_fetch_assoc($result)) {
1244                                 $unread += $line["unread"];
1245                         }
1246
1247                         return $unread;
1248                 } else if ($cat == -1) {
1249                         return getFeedUnread($link, -1) + getFeedUnread($link, -2) + getFeedUnread($link, -3) + getFeedUnread($link, 0);
1250                 } else if ($cat == -2) {
1251
1252                         $result = db_query($link, "
1253                                 SELECT COUNT(unread) AS unread FROM
1254                                         ttrss_user_entries, ttrss_user_labels2
1255                                 WHERE article_id = ref_id AND unread = true
1256                                         AND ttrss_user_entries.owner_uid = '$owner_uid'");
1257
1258                         $unread = db_fetch_result($result, 0, "unread");
1259
1260                         return $unread;
1261
1262                 }
1263         }
1264
1265         function getFeedUnread($link, $feed, $is_cat = false) {
1266                 return getFeedArticles($link, $feed, $is_cat, true, $_SESSION["uid"]);
1267         }
1268
1269         function getLabelUnread($link, $label_id, $owner_uid = false) {
1270                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1271
1272                 $result = db_query($link, "SELECT COUNT(ref_id) AS unread FROM ttrss_user_entries, ttrss_user_labels2
1273                         WHERE owner_uid = '$owner_uid' AND unread = true AND label_id = '$label_id' AND article_id = ref_id");
1274
1275                 if (db_num_rows($result) != 0) {
1276                         return db_fetch_result($result, 0, "unread");
1277                 } else {
1278                         return 0;
1279                 }
1280         }
1281
1282         function getFeedArticles($link, $feed, $is_cat = false, $unread_only = false,
1283                 $owner_uid = false) {
1284
1285                 $n_feed = (int) $feed;
1286                 $need_entries = false;
1287
1288                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1289
1290                 if ($unread_only) {
1291                         $unread_qpart = "unread = true";
1292                 } else {
1293                         $unread_qpart = "true";
1294                 }
1295
1296                 if ($is_cat) {
1297                         return getCategoryUnread($link, $n_feed, $owner_uid);
1298                 } else if ($n_feed == -6) {
1299                         return 0;
1300                 } else if ($feed != "0" && $n_feed == 0) {
1301
1302                         $feed = db_escape_string($link, $feed);
1303
1304                         $result = db_query($link, "SELECT SUM((SELECT COUNT(int_id)
1305                                 FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1306                                         AND ref_id = id AND $unread_qpart)) AS count FROM ttrss_tags
1307                                 WHERE owner_uid = $owner_uid AND tag_name = '$feed'");
1308                         return db_fetch_result($result, 0, "count");
1309
1310                 } else if ($n_feed == -1) {
1311                         $match_part = "marked = true";
1312                 } else if ($n_feed == -2) {
1313                         $match_part = "published = true";
1314                 } else if ($n_feed == -3) {
1315                         $match_part = "unread = true AND score >= 0";
1316
1317                         $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
1318
1319                         if (DB_TYPE == "pgsql") {
1320                                 $match_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
1321                         } else {
1322                                 $match_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
1323                         }
1324
1325                         $need_entries = true;
1326
1327                 } else if ($n_feed == -4) {
1328                         $match_part = "true";
1329                 } else if ($n_feed >= 0) {
1330
1331                         if ($n_feed != 0) {
1332                                 $match_part = "feed_id = '$n_feed'";
1333                         } else {
1334                                 $match_part = "feed_id IS NULL";
1335                         }
1336
1337                 } else if ($feed < -10) {
1338
1339                         $label_id = -$feed - 11;
1340
1341                         return getLabelUnread($link, $label_id, $owner_uid);
1342
1343                 }
1344
1345                 if ($match_part) {
1346
1347                         if ($need_entries) {
1348                                 $from_qpart = "ttrss_user_entries,ttrss_entries";
1349                                 $from_where = "ttrss_entries.id = ttrss_user_entries.ref_id AND";
1350                         } else {
1351                                 $from_qpart = "ttrss_user_entries";
1352                         }
1353
1354                         $query = "SELECT count(int_id) AS unread
1355                                 FROM $from_qpart WHERE
1356                                 $unread_qpart AND $from_where ($match_part) AND ttrss_user_entries.owner_uid = $owner_uid";
1357
1358                         //echo "[$feed/$query]\n";
1359
1360                         $result = db_query($link, $query);
1361
1362                 } else {
1363
1364                         $result = db_query($link, "SELECT COUNT(post_int_id) AS unread
1365                                 FROM ttrss_tags,ttrss_user_entries,ttrss_entries
1366                                 WHERE tag_name = '$feed' AND post_int_id = int_id AND ref_id = ttrss_entries.id
1367                                 AND $unread_qpart AND ttrss_tags.owner_uid = " . $owner_uid);
1368                 }
1369
1370                 $unread = db_fetch_result($result, 0, "unread");
1371
1372                 return $unread;
1373         }
1374
1375         function getGlobalUnread($link, $user_id = false) {
1376
1377                 if (!$user_id) {
1378                         $user_id = $_SESSION["uid"];
1379                 }
1380
1381                 $result = db_query($link, "SELECT SUM(value) AS c_id FROM ttrss_counters_cache
1382                         WHERE owner_uid = '$user_id' AND feed_id > 0");
1383
1384                 $c_id = db_fetch_result($result, 0, "c_id");
1385
1386                 return $c_id;
1387         }
1388
1389         function getGlobalCounters($link, $global_unread = -1) {
1390                 $ret_arr = array();
1391
1392                 if ($global_unread == -1) {
1393                         $global_unread = getGlobalUnread($link);
1394                 }
1395
1396                 $cv = array("id" => "global-unread",
1397                         "counter" => (int) $global_unread);
1398
1399                 array_push($ret_arr, $cv);
1400
1401                 $result = db_query($link, "SELECT COUNT(id) AS fn FROM
1402                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1403
1404                 $subscribed_feeds = db_fetch_result($result, 0, "fn");
1405
1406                 $cv = array("id" => "subscribed-feeds",
1407                         "counter" => (int) $subscribed_feeds);
1408
1409                 array_push($ret_arr, $cv);
1410
1411                 return $ret_arr;
1412         }
1413
1414         function getVirtCounters($link) {
1415
1416                 $ret_arr = array();
1417
1418                 for ($i = 0; $i >= -4; $i--) {
1419
1420                         $count = getFeedUnread($link, $i);
1421
1422                         $cv = array("id" => $i,
1423                                 "counter" => (int) $count);
1424
1425 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1426 //                              $cv["xmsg"] = getFeedArticles($link, $i)." ".__("total");
1427
1428                         array_push($ret_arr, $cv);
1429                 }
1430
1431                 return $ret_arr;
1432         }
1433
1434         function getLabelCounters($link, $descriptions = false) {
1435
1436                 $ret_arr = array();
1437
1438                 $owner_uid = $_SESSION["uid"];
1439
1440                 $result = db_query($link, "SELECT id,caption,COUNT(unread) AS unread
1441                         FROM ttrss_labels2 LEFT JOIN ttrss_user_labels2 ON
1442                                 (ttrss_labels2.id = label_id)
1443                                         LEFT JOIN ttrss_user_entries ON (ref_id = article_id AND unread = true)
1444                                 WHERE ttrss_labels2.owner_uid = $owner_uid GROUP BY ttrss_labels2.id,
1445                                         ttrss_labels2.caption");
1446
1447                 while ($line = db_fetch_assoc($result)) {
1448
1449                         $id = -$line["id"] - 11;
1450
1451                         $label_name = $line["caption"];
1452                         $count = $line["unread"];
1453
1454                         $cv = array("id" => $id,
1455                                 "counter" => (int) $count);
1456
1457                         if ($descriptions)
1458                                 $cv["description"] = $label_name;
1459
1460 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1461 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1462
1463                         array_push($ret_arr, $cv);
1464                 }
1465
1466                 return $ret_arr;
1467         }
1468
1469         function getFeedCounters($link, $active_feed = false) {
1470
1471                 $ret_arr = array();
1472
1473                 $query = "SELECT ttrss_feeds.id,
1474                                 ttrss_feeds.title,
1475                                 ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
1476                                 last_error, value AS count
1477                         FROM ttrss_feeds, ttrss_counters_cache
1478                         WHERE ttrss_feeds.owner_uid = ".$_SESSION["uid"]."
1479                                 AND ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid
1480                                 AND ttrss_counters_cache.feed_id = id";
1481
1482                 $result = db_query($link, $query);
1483                 $fctrs_modified = false;
1484
1485                 while ($line = db_fetch_assoc($result)) {
1486
1487                         $id = $line["id"];
1488                         $count = $line["count"];
1489                         $last_error = htmlspecialchars($line["last_error"]);
1490
1491                         $last_updated = make_local_datetime($link, $line['last_updated'], false);
1492
1493                         $has_img = feed_has_icon($id);
1494
1495                         if (date('Y') - date('Y', strtotime($line['last_updated'])) > 2)
1496                                 $last_updated = '';
1497
1498                         $cv = array("id" => $id,
1499                                 "updated" => $last_updated,
1500                                 "counter" => (int) $count,
1501                                 "has_img" => (int) $has_img);
1502
1503                         if ($last_error)
1504                                 $cv["error"] = $last_error;
1505
1506 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1507 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1508
1509                         if ($active_feed && $id == $active_feed)
1510                                 $cv["title"] = truncate_string($line["title"], 30);
1511
1512                         array_push($ret_arr, $cv);
1513
1514                 }
1515
1516                 return $ret_arr;
1517         }
1518
1519         function get_pgsql_version($link) {
1520                 $result = db_query($link, "SELECT version() AS version");
1521                 $version = explode(" ", db_fetch_result($result, 0, "version"));
1522                 return $version[1];
1523         }
1524
1525         /**
1526          * @return array (code => Status code, message => error message if available)
1527          *
1528          *                 0 - OK, Feed already exists
1529          *                 1 - OK, Feed added
1530          *                 2 - Invalid URL
1531          *                 3 - URL content is HTML, no feeds available
1532          *                 4 - URL content is HTML which contains multiple feeds.
1533          *                     Here you should call extractfeedurls in rpc-backend
1534          *                     to get all possible feeds.
1535          *                 5 - Couldn't download the URL content.
1536          */
1537         function subscribe_to_feed($link, $url, $cat_id = 0,
1538                         $auth_login = '', $auth_pass = '') {
1539
1540                 global $fetch_last_error;
1541
1542                 require_once "include/rssfuncs.php";
1543
1544                 $url = fix_url($url);
1545
1546                 if (!$url || !validate_feed_url($url)) return array("code" => 2);
1547
1548                 $contents = @fetch_file_contents($url, false, $auth_login, $auth_pass);
1549
1550                 if (!$contents) {
1551                         return array("code" => 5, "message" => $fetch_last_error);
1552                 }
1553
1554                 if (is_html($contents)) {
1555                         $feedUrls = get_feeds_from_html($url, $contents);
1556
1557                         if (count($feedUrls) == 0) {
1558                                 return array("code" => 3);
1559                         } else if (count($feedUrls) > 1) {
1560                                 return array("code" => 4, "feeds" => $feedUrls);
1561                         }
1562                         //use feed url as new URL
1563                         $url = key($feedUrls);
1564                 }
1565
1566                 if ($cat_id == "0" || !$cat_id) {
1567                         $cat_qpart = "NULL";
1568                 } else {
1569                         $cat_qpart = "'$cat_id'";
1570                 }
1571
1572                 $result = db_query($link,
1573                         "SELECT id FROM ttrss_feeds
1574                         WHERE feed_url = '$url' AND owner_uid = ".$_SESSION["uid"]);
1575
1576                 if (db_num_rows($result) == 0) {
1577                         $result = db_query($link,
1578                                 "INSERT INTO ttrss_feeds
1579                                         (owner_uid,feed_url,title,cat_id, auth_login,auth_pass,update_method)
1580                                 VALUES ('".$_SESSION["uid"]."', '$url',
1581                                 '[Unknown]', $cat_qpart, '$auth_login', '$auth_pass', 0)");
1582
1583                         $result = db_query($link,
1584                                 "SELECT id FROM ttrss_feeds WHERE feed_url = '$url'
1585                                         AND owner_uid = " . $_SESSION["uid"]);
1586
1587                         $feed_id = db_fetch_result($result, 0, "id");
1588
1589                         if ($feed_id) {
1590                                 update_rss_feed($link, $feed_id, true);
1591                         }
1592
1593                         return array("code" => 1);
1594                 } else {
1595                         return array("code" => 0);
1596                 }
1597         }
1598
1599         function print_feed_select($link, $id, $default_id = "",
1600                 $attributes = "", $include_all_feeds = true,
1601                 $root_id = false, $nest_level = 0) {
1602
1603                 if (!$root_id) {
1604                         print "<select id=\"$id\" name=\"$id\" $attributes>";
1605                         if ($include_all_feeds) {
1606                                 $is_selected = ("0" == $default_id) ? "selected=\"1\"" : "";
1607                                 print "<option $is_selected value=\"0\">".__('All feeds')."</option>";
1608                         }
1609                 }
1610
1611                 if (get_pref($link, 'ENABLE_FEED_CATS')) {
1612
1613                         if ($root_id)
1614                                 $parent_qpart = "parent_cat = '$root_id'";
1615                         else
1616                                 $parent_qpart = "parent_cat IS NULL";
1617
1618                         $result = db_query($link, "SELECT id,title,
1619                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1620                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1621                                 FROM ttrss_feed_categories
1622                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1623
1624                         while ($line = db_fetch_assoc($result)) {
1625
1626                                 for ($i = 0; $i < $nest_level; $i++)
1627                                         $line["title"] = " - " . $line["title"];
1628
1629                                 $is_selected = ("CAT:".$line["id"] == $default_id) ? "selected=\"1\"" : "";
1630
1631                                 printf("<option $is_selected value='CAT:%d'>%s</option>",
1632                                         $line["id"], htmlspecialchars($line["title"]));
1633
1634                                 if ($line["num_children"] > 0)
1635                                         print_feed_select($link, $id, $default_id, $attributes,
1636                                                 $include_all_feeds, $line["id"], $nest_level+1);
1637
1638                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1639                                         WHERE cat_id = '".$line["id"]."' AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1640
1641                                 while ($fline = db_fetch_assoc($feed_result)) {
1642                                         $is_selected = ($fline["id"] == $default_id) ? "selected=\"1\"" : "";
1643
1644                                         $fline["title"] = " + " . $fline["title"];
1645
1646                                         for ($i = 0; $i < $nest_level; $i++)
1647                                                 $fline["title"] = " - " . $fline["title"];
1648
1649                                         printf("<option $is_selected value='%d'>%s</option>",
1650                                                 $fline["id"], htmlspecialchars($fline["title"]));
1651                                 }
1652                         }
1653
1654                         if (!$root_id) {
1655                                 $is_selected = ($default_id == "CAT:0") ? "selected=\"1\"" : "";
1656
1657                                 printf("<option $is_selected value='CAT:0'>%s</option>",
1658                                         __("Uncategorized"));
1659
1660                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1661                                         WHERE cat_id IS NULL AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1662
1663                                 while ($fline = db_fetch_assoc($feed_result)) {
1664                                         $is_selected = ($fline["id"] == $default_id && !$default_is_cat) ? "selected=\"1\"" : "";
1665
1666                                         $fline["title"] = " + " . $fline["title"];
1667
1668                                         for ($i = 0; $i < $nest_level; $i++)
1669                                                 $fline["title"] = " - " . $fline["title"];
1670
1671                                         printf("<option $is_selected value='%d'>%s</option>",
1672                                                 $fline["id"], htmlspecialchars($fline["title"]));
1673                                 }
1674                         }
1675
1676                 } else {
1677                         $result = db_query($link, "SELECT id,title FROM ttrss_feeds
1678                                 WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
1679
1680                         while ($line = db_fetch_assoc($result)) {
1681
1682                                 $is_selected = ($line["id"] == $default_id) ? "selected=\"1\"" : "";
1683
1684                                 printf("<option $is_selected value='%d'>%s</option>",
1685                                         $line["id"], htmlspecialchars($line["title"]));
1686                         }
1687                 }
1688
1689                 if (!$root_id) {
1690                         print "</select>";
1691                 }
1692         }
1693
1694         function print_feed_cat_select($link, $id, $default_id,
1695                 $attributes, $include_all_cats = true, $root_id = false, $nest_level = 0) {
1696
1697                         if (!$root_id) {
1698                                         print "<select id=\"$id\" name=\"$id\" default=\"$default_id\" onchange=\"catSelectOnChange(this)\" $attributes>";
1699                         }
1700
1701                         if ($root_id)
1702                                 $parent_qpart = "parent_cat = '$root_id'";
1703                         else
1704                                 $parent_qpart = "parent_cat IS NULL";
1705
1706                         $result = db_query($link, "SELECT id,title,
1707                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1708                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1709                                 FROM ttrss_feed_categories
1710                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1711
1712                         while ($line = db_fetch_assoc($result)) {
1713                                 if ($line["id"] == $default_id) {
1714                                         $is_selected = "selected=\"1\"";
1715                                 } else {
1716                                         $is_selected = "";
1717                                 }
1718
1719                                 for ($i = 0; $i < $nest_level; $i++)
1720                                         $line["title"] = " - " . $line["title"];
1721
1722                                 if ($line["title"])
1723                                         printf("<option $is_selected value='%d'>%s</option>",
1724                                                 $line["id"], htmlspecialchars($line["title"]));
1725
1726                                 if ($line["num_children"] > 0)
1727                                         print_feed_cat_select($link, $id, $default_id, $attributes,
1728                                                 $include_all_cats, $line["id"], $nest_level+1);
1729                         }
1730
1731                         if (!$root_id) {
1732                                 if ($include_all_cats) {
1733                                         if (db_num_rows($result) > 0) {
1734                                                 print "<option disabled=\"1\">--------</option>";
1735                                         }
1736
1737                                         if ($default_id == 0) {
1738                                                 $is_selected = "selected=\"1\"";
1739                                         } else {
1740                                                 $is_selected = "";
1741                                         }
1742
1743                                         print "<option $is_selected value=\"0\">".__('Uncategorized')."</option>";
1744                                 }
1745                                 print "</select>";
1746                         }
1747                 }
1748
1749         function checkbox_to_sql_bool($val) {
1750                 return ($val == "on") ? "true" : "false";
1751         }
1752
1753         function getFeedCatTitle($link, $id) {
1754                 if ($id == -1) {
1755                         return __("Special");
1756                 } else if ($id < -10) {
1757                         return __("Labels");
1758                 } else if ($id > 0) {
1759                         $result = db_query($link, "SELECT ttrss_feed_categories.title
1760                                 FROM ttrss_feeds, ttrss_feed_categories WHERE ttrss_feeds.id = '$id' AND
1761                                         cat_id = ttrss_feed_categories.id");
1762                         if (db_num_rows($result) == 1) {
1763                                 return db_fetch_result($result, 0, "title");
1764                         } else {
1765                                 return __("Uncategorized");
1766                         }
1767                 } else {
1768                         return "getFeedCatTitle($id) failed";
1769                 }
1770
1771         }
1772
1773         function getFeedIcon($id) {
1774                 switch ($id) {
1775                 case 0:
1776                         return "images/archive.png";
1777                         break;
1778                 case -1:
1779                         return "images/mark_set.svg";
1780                         break;
1781                 case -2:
1782                         return "images/pub_set.svg";
1783                         break;
1784                 case -3:
1785                         return "images/fresh.png";
1786                         break;
1787                 case -4:
1788                         return "images/tag.png";
1789                         break;
1790                 case -6:
1791                         return "images/recently_read.png";
1792                         break;
1793                 default:
1794                         if ($id < -10) {
1795                                 return "images/label.png";
1796                         } else {
1797                                 if (file_exists(ICONS_DIR . "/$id.ico"))
1798                                         return ICONS_URL . "/$id.ico";
1799                         }
1800                         break;
1801                 }
1802         }
1803
1804         function getFeedTitle($link, $id, $cat = false) {
1805                 if ($cat) {
1806                         return getCategoryTitle($link, $id);
1807                 } else if ($id == -1) {
1808                         return __("Starred articles");
1809                 } else if ($id == -2) {
1810                         return __("Published articles");
1811                 } else if ($id == -3) {
1812                         return __("Fresh articles");
1813                 } else if ($id == -4) {
1814                         return __("All articles");
1815                 } else if ($id === 0 || $id === "0") {
1816                         return __("Archived articles");
1817                 } else if ($id == -6) {
1818                         return __("Recently read");
1819                 } else if ($id < -10) {
1820                         $label_id = -$id - 11;
1821                         $result = db_query($link, "SELECT caption FROM ttrss_labels2 WHERE id = '$label_id'");
1822                         if (db_num_rows($result) == 1) {
1823                                 return db_fetch_result($result, 0, "caption");
1824                         } else {
1825                                 return "Unknown label ($label_id)";
1826                         }
1827
1828                 } else if (is_numeric($id) && $id > 0) {
1829                         $result = db_query($link, "SELECT title FROM ttrss_feeds WHERE id = '$id'");
1830                         if (db_num_rows($result) == 1) {
1831                                 return db_fetch_result($result, 0, "title");
1832                         } else {
1833                                 return "Unknown feed ($id)";
1834                         }
1835                 } else {
1836                         return $id;
1837                 }
1838         }
1839
1840         function make_init_params($link) {
1841                 $params = array();
1842
1843                 foreach (array("ON_CATCHUP_SHOW_NEXT_FEED", "HIDE_READ_FEEDS",
1844                         "ENABLE_FEED_CATS", "FEEDS_SORT_BY_UNREAD", "CONFIRM_FEED_CATCHUP",
1845                         "CDM_AUTO_CATCHUP", "FRESH_ARTICLE_MAX_AGE", "DEFAULT_ARTICLE_LIMIT",
1846                         "HIDE_READ_SHOWS_SPECIAL", "COMBINED_DISPLAY_MODE") as $param) {
1847
1848                                  $params[strtolower($param)] = (int) get_pref($link, $param);
1849                  }
1850
1851                 $params["icons_url"] = ICONS_URL;
1852                 $params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
1853                 $params["default_view_mode"] = get_pref($link, "_DEFAULT_VIEW_MODE");
1854                 $params["default_view_limit"] = (int) get_pref($link, "_DEFAULT_VIEW_LIMIT");
1855                 $params["default_view_order_by"] = get_pref($link, "_DEFAULT_VIEW_ORDER_BY");
1856                 $params["bw_limit"] = (int) $_SESSION["bw_limit"];
1857
1858                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
1859                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1860
1861                 $max_feed_id = db_fetch_result($result, 0, "mid");
1862                 $num_feeds = db_fetch_result($result, 0, "nf");
1863
1864                 $params["max_feed_id"] = (int) $max_feed_id;
1865                 $params["num_feeds"] = (int) $num_feeds;
1866
1867                 $params["collapsed_feedlist"] = (int) get_pref($link, "_COLLAPSED_FEEDLIST");
1868                 $params["hotkeys"] = get_hotkeys_map($link);
1869
1870                 $params["csrf_token"] = $_SESSION["csrf_token"];
1871                 $params["widescreen"] = (int) $_COOKIE["ttrss_widescreen"];
1872
1873                 $params['simple_update'] = defined('SIMPLE_UPDATE_MODE') && SIMPLE_UPDATE_MODE;
1874
1875                 return $params;
1876         }
1877
1878         function get_hotkeys_info($link) {
1879                 $hotkeys = array(
1880                         __("Navigation") => array(
1881                                 "next_feed" => __("Open next feed"),
1882                                 "prev_feed" => __("Open previous feed"),
1883                                 "next_article" => __("Open next article"),
1884                                 "prev_article" => __("Open previous article"),
1885                                 "next_article_noscroll" => __("Open next article (don't scroll long articles)"),
1886                                 "prev_article_noscroll" => __("Open previous article (don't scroll long articles)"),
1887                                 "search_dialog" => __("Show search dialog")),
1888                         __("Article") => array(
1889                                 "toggle_mark" => __("Toggle starred"),
1890                                 "toggle_publ" => __("Toggle published"),
1891                                 "toggle_unread" => __("Toggle unread"),
1892                                 "edit_tags" => __("Edit tags"),
1893                                 "dismiss_selected" => __("Dismiss selected"),
1894                                 "dismiss_read" => __("Dismiss read"),
1895                                 "open_in_new_window" => __("Open in new window"),
1896                                 "catchup_below" => __("Mark below as read"),
1897                                 "catchup_above" => __("Mark above as read"),
1898                                 "article_scroll_down" => __("Scroll down"),
1899                                 "article_scroll_up" => __("Scroll up"),
1900                                 "select_article_cursor" => __("Select article under cursor"),
1901                                 "email_article" => __("Email article"),
1902                                 "close_article" => __("Close/collapse article"),
1903                                 "toggle_widescreen" => __("Toggle widescreen mode"),
1904                                 "toggle_embed_original" => __("Toggle embed original")),
1905                         __("Article selection") => array(
1906                                 "select_all" => __("Select all articles"),
1907                                 "select_unread" => __("Select unread"),
1908                                 "select_marked" => __("Select starred"),
1909                                 "select_published" => __("Select published"),
1910                                 "select_invert" => __("Invert selection"),
1911                                 "select_none" => __("Deselect everything")),
1912                         __("Feed") => array(
1913                                 "feed_refresh" => __("Refresh current feed"),
1914                                 "feed_unhide_read" => __("Un/hide read feeds"),
1915                                 "feed_subscribe" => __("Subscribe to feed"),
1916                                 "feed_edit" => __("Edit feed"),
1917                                 "feed_catchup" => __("Mark as read"),
1918                                 "feed_reverse" => __("Reverse headlines"),
1919                                 "feed_debug_update" => __("Debug feed update"),
1920                                 "catchup_all" => __("Mark all feeds as read"),
1921                                 "cat_toggle_collapse" => __("Un/collapse current category"),
1922                                 "toggle_combined_mode" => __("Toggle combined mode")),
1923                         __("Go to") => array(
1924                                 "goto_all" => __("All articles"),
1925                                 "goto_fresh" => __("Fresh"),
1926                                 "goto_marked" => __("Starred"),
1927                                 "goto_published" => __("Published"),
1928                                 "goto_tagcloud" => __("Tag cloud"),
1929                                 "goto_prefs" => __("Preferences")),
1930                         __("Other") => array(
1931                                 "create_label" => __("Create label"),
1932                                 "create_filter" => __("Create filter"),
1933                                 "collapse_sidebar" => __("Un/collapse sidebar"),
1934                                 "help_dialog" => __("Show help dialog"))
1935                         );
1936
1937                 return $hotkeys;
1938         }
1939
1940         function get_hotkeys_map($link) {
1941                 $hotkeys = array(
1942 //                      "navigation" => array(
1943                                 "k" => "next_feed",
1944                                 "j" => "prev_feed",
1945                                 "n" => "next_article",
1946                                 "p" => "prev_article",
1947                                 "(38)|up" => "prev_article",
1948                                 "(40)|down" => "next_article",
1949 //                              "^(38)|Ctrl-up" => "prev_article_noscroll",
1950 //                              "^(40)|Ctrl-down" => "next_article_noscroll",
1951                                 "(191)|/" => "search_dialog",
1952 //                      "article" => array(
1953                                 "s" => "toggle_mark",
1954                                 "*s" => "toggle_publ",
1955                                 "u" => "toggle_unread",
1956                                 "*t" => "edit_tags",
1957                                 "*d" => "dismiss_selected",
1958                                 "*x" => "dismiss_read",
1959                                 "o" => "open_in_new_window",
1960                                 "c p" => "catchup_below",
1961                                 "c n" => "catchup_above",
1962                                 "*n" => "article_scroll_down",
1963                                 "*p" => "article_scroll_up",
1964                                 "*(38)|Shift+up" => "article_scroll_up",
1965                                 "*(40)|Shift+down" => "article_scroll_down",
1966                                 "a *w" => "toggle_widescreen",
1967                                 "a e" => "toggle_embed_original",
1968                                 "e" => "email_article",
1969                                 "a q" => "close_article",
1970 //                      "article_selection" => array(
1971                                 "a a" => "select_all",
1972                                 "a u" => "select_unread",
1973                                 "a *u" => "select_marked",
1974                                 "a p" => "select_published",
1975                                 "a i" => "select_invert",
1976                                 "a n" => "select_none",
1977 //                      "feed" => array(
1978                                 "f r" => "feed_refresh",
1979                                 "f a" => "feed_unhide_read",
1980                                 "f s" => "feed_subscribe",
1981                                 "f e" => "feed_edit",
1982                                 "f q" => "feed_catchup",
1983                                 "f x" => "feed_reverse",
1984                                 "f *d" => "feed_debug_update",
1985                                 "f *c" => "toggle_combined_mode",
1986                                 "*q" => "catchup_all",
1987                                 "x" => "cat_toggle_collapse",
1988 //                      "goto" => array(
1989                                 "g a" => "goto_all",
1990                                 "g f" => "goto_fresh",
1991                                 "g s" => "goto_marked",
1992                                 "g p" => "goto_published",
1993                                 "g t" => "goto_tagcloud",
1994                                 "g *p" => "goto_prefs",
1995 //                      "other" => array(
1996                                 "(9)|Tab" => "select_article_cursor", // tab
1997                                 "c l" => "create_label",
1998                                 "c f" => "create_filter",
1999                                 "c s" => "collapse_sidebar",
2000                                 "^(191)|Ctrl+/" => "help_dialog",
2001                         );
2002
2003                 if (get_pref($link, 'COMBINED_DISPLAY_MODE')) {
2004                         $hotkeys["^(38)|Ctrl-up"] = "prev_article_noscroll";
2005                         $hotkeys["^(40)|Ctrl-down"] = "next_article_noscroll";
2006                 }
2007
2008                 global $pluginhost;
2009                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_HOTKEY_MAP) as $plugin) {
2010                         $hotkeys = $plugin->hook_hotkey_map($hotkeys);
2011                 }
2012
2013                 $prefixes = array();
2014
2015                 foreach (array_keys($hotkeys) as $hotkey) {
2016                         $pair = explode(" ", $hotkey, 2);
2017
2018                         if (count($pair) > 1 && !in_array($pair[0], $prefixes)) {
2019                                 array_push($prefixes, $pair[0]);
2020                         }
2021                 }
2022
2023                 return array($prefixes, $hotkeys);
2024         }
2025
2026         function make_runtime_info($link) {
2027                 $data = array();
2028
2029                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2030                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2031
2032                 $max_feed_id = db_fetch_result($result, 0, "mid");
2033                 $num_feeds = db_fetch_result($result, 0, "nf");
2034
2035                 $data["max_feed_id"] = (int) $max_feed_id;
2036                 $data["num_feeds"] = (int) $num_feeds;
2037
2038                 $data['last_article_id'] = getLastArticleId($link);
2039                 $data['cdm_expanded'] = get_pref($link, 'CDM_EXPANDED');
2040
2041                 $data['dep_ts'] = calculate_dep_timestamp();
2042
2043                 if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
2044
2045                         $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
2046
2047                         if (time() - $_SESSION["daemon_stamp_check"] > 30) {
2048
2049                                 $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
2050
2051                                 if ($stamp) {
2052                                         $stamp_delta = time() - $stamp;
2053
2054                                         if ($stamp_delta > 1800) {
2055                                                 $stamp_check = 0;
2056                                         } else {
2057                                                 $stamp_check = 1;
2058                                                 $_SESSION["daemon_stamp_check"] = time();
2059                                         }
2060
2061                                         $data['daemon_stamp_ok'] = $stamp_check;
2062
2063                                         $stamp_fmt = date("Y.m.d, G:i", $stamp);
2064
2065                                         $data['daemon_stamp'] = $stamp_fmt;
2066                                 }
2067                         }
2068                 }
2069
2070                 if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
2071                                 $new_version_details = @check_for_update($link);
2072
2073                                 $data['new_version_available'] = (int) ($new_version_details != false);
2074
2075                                 $_SESSION["last_version_check"] = time();
2076                                 $_SESSION["version_data"] = $new_version_details;
2077                 }
2078
2079                 return $data;
2080         }
2081
2082         function search_to_sql($link, $search) {
2083
2084                 $search_query_part = "";
2085
2086                 $keywords = explode(" ", $search);
2087                 $query_keywords = array();
2088
2089                 foreach ($keywords as $k) {
2090                         if (strpos($k, "-") === 0) {
2091                                 $k = substr($k, 1);
2092                                 $not = "NOT";
2093                         } else {
2094                                 $not = "";
2095                         }
2096
2097                         $commandpair = explode(":", mb_strtolower($k), 2);
2098
2099                         if ($commandpair[0] == "note" && $commandpair[1]) {
2100
2101                                 if ($commandpair[1] == "true")
2102                                         array_push($query_keywords, "($not (note IS NOT NULL AND note != ''))");
2103                                 else
2104                                         array_push($query_keywords, "($not (note IS NULL OR note = ''))");
2105
2106                         } else if ($commandpair[0] == "star" && $commandpair[1]) {
2107
2108                                 if ($commandpair[1] == "true")
2109                                         array_push($query_keywords, "($not (marked = true))");
2110                                 else
2111                                         array_push($query_keywords, "($not (marked = false))");
2112
2113                         } else if ($commandpair[0] == "pub" && $commandpair[1]) {
2114
2115                                 if ($commandpair[1] == "true")
2116                                         array_push($query_keywords, "($not (published = true))");
2117                                 else
2118                                         array_push($query_keywords, "($not (published = false))");
2119
2120                         } else if (strpos($k, "@") === 0) {
2121
2122                                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $_SESSION['uid']);
2123                                 $orig_ts = strtotime(substr($k, 1));
2124                                 $k = date("Y-m-d", convert_timestamp($orig_ts, $user_tz_string, 'UTC'));
2125
2126                                 //$k = date("Y-m-d", strtotime(substr($k, 1)));
2127
2128                                 array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
2129                         } else {
2130                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2131                                                 OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2132                         }
2133                 }
2134
2135                 $search_query_part = implode("AND", $query_keywords);
2136
2137                 return $search_query_part;
2138         }
2139
2140         function getParentCategories($link, $cat, $owner_uid) {
2141                 $rv = array();
2142
2143                 $result = db_query($link, "SELECT parent_cat FROM ttrss_feed_categories
2144                         WHERE id = '$cat' AND parent_cat IS NOT NULL AND owner_uid = $owner_uid");
2145
2146                 while ($line = db_fetch_assoc($result)) {
2147                         array_push($rv, $line["parent_cat"]);
2148                         $rv = array_merge($rv, getParentCategories($link, $line["parent_cat"], $owner_uid));
2149                 }
2150
2151                 return $rv;
2152         }
2153
2154         function getChildCategories($link, $cat, $owner_uid) {
2155                 $rv = array();
2156
2157                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories
2158                         WHERE parent_cat = '$cat' AND owner_uid = $owner_uid");
2159
2160                 while ($line = db_fetch_assoc($result)) {
2161                         array_push($rv, $line["id"]);
2162                         $rv = array_merge($rv, getChildCategories($link, $line["id"], $owner_uid));
2163                 }
2164
2165                 return $rv;
2166         }
2167
2168         function queryFeedHeadlines($link, $feed, $limit, $view_mode, $cat_view, $search, $search_mode, $override_order = false, $offset = 0, $owner_uid = 0, $filter = false, $since_id = 0, $include_children = false, $ignore_vfeed_group = false) {
2169
2170                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2171
2172                 $ext_tables_part = "";
2173
2174                         if ($search) {
2175
2176                                 if (SPHINX_ENABLED) {
2177                                         $ids = join(",", @sphinx_search($search, 0, 500));
2178
2179                                         if ($ids)
2180                                                 $search_query_part = "ref_id IN ($ids) AND ";
2181                                         else
2182                                                 $search_query_part = "ref_id = -1 AND ";
2183
2184                                 } else {
2185                                         $search_query_part = search_to_sql($link, $search);
2186                                         $search_query_part .= " AND ";
2187                                 }
2188
2189                         } else {
2190                                 $search_query_part = "";
2191                         }
2192
2193                         if ($filter) {
2194
2195                                 if (DB_TYPE == "pgsql") {
2196                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '14 days' ";
2197                                 } else {
2198                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL 14 DAY) ";
2199                                 }
2200
2201                                 $override_order = "updated DESC";
2202
2203                                 $filter_query_part = filter_to_sql($link, $filter, $owner_uid);
2204
2205                                 // Try to check if SQL regexp implementation chokes on a valid regexp
2206                                 $result = db_query($link, "SELECT true AS true_val FROM ttrss_entries,
2207                                         ttrss_user_entries, ttrss_feeds, ttrss_feed_categories
2208                                         WHERE $filter_query_part LIMIT 1", false);
2209
2210                                 if ($result) {
2211                                         $test = db_fetch_result($result, 0, "true_val");
2212
2213                                         if (!$test) {
2214                                                 $filter_query_part = "false AND";
2215                                         } else {
2216                                                 $filter_query_part .= " AND";
2217                                         }
2218                                 } else {
2219                                         $filter_query_part = "false AND";
2220                                 }
2221
2222                         } else {
2223                                 $filter_query_part = "";
2224                         }
2225
2226                         if ($since_id) {
2227                                 $since_id_part = "ttrss_entries.id > $since_id AND ";
2228                         } else {
2229                                 $since_id_part = "";
2230                         }
2231
2232                         $view_query_part = "";
2233
2234                         if ($view_mode == "adaptive" || $view_query_part == "noscores") {
2235                                 if ($search) {
2236                                         $view_query_part = " ";
2237                                 } else if ($feed != -1) {
2238                                         $unread = getFeedUnread($link, $feed, $cat_view);
2239
2240                                         if ($cat_view && $feed > 0 && $include_children)
2241                                                 $unread += getCategoryChildrenUnread($link, $feed);
2242
2243                                         if ($unread > 0) {
2244                                                 $view_query_part = " unread = true AND ";
2245                                         }
2246                                 }
2247                         }
2248
2249                         if ($view_mode == "marked") {
2250                                 $view_query_part = " marked = true AND ";
2251                         }
2252
2253                         if ($view_mode == "published") {
2254                                 $view_query_part = " published = true AND ";
2255                         }
2256
2257                         if ($view_mode == "unread") {
2258                                 $view_query_part = " unread = true AND ";
2259                         }
2260
2261                         if ($view_mode == "updated") {
2262                                 $view_query_part = " (last_read is null and unread = false) AND ";
2263                         }
2264
2265                         if ($limit > 0) {
2266                                 $limit_query_part = "LIMIT " . $limit;
2267                         }
2268
2269                         $allow_archived = false;
2270
2271                         $vfeed_query_part = "";
2272
2273                         // override query strategy and enable feed display when searching globally
2274                         if ($search && $search_mode == "all_feeds") {
2275                                 $query_strategy_part = "true";
2276                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2277                         /* tags */
2278                         } else if (!is_numeric($feed)) {
2279                                 $query_strategy_part = "true";
2280                                 $vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
2281                                         id = feed_id) as feed_title,";
2282                         } else if ($search && $search_mode == "this_cat") {
2283                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2284
2285                                 if ($feed > 0) {
2286                                         if ($include_children) {
2287                                                 $subcats = getChildCategories($link, $feed, $owner_uid);
2288                                                 array_push($subcats, $feed);
2289                                                 $cats_qpart = join(",", $subcats);
2290                                         } else {
2291                                                 $cats_qpart = $feed;
2292                                         }
2293
2294                                         $query_strategy_part = "ttrss_feeds.cat_id IN ($cats_qpart)";
2295
2296                                 } else {
2297                                         $query_strategy_part = "ttrss_feeds.cat_id IS NULL";
2298                                 }
2299
2300                         } else if ($feed > 0) {
2301
2302                                 if ($cat_view) {
2303
2304                                         if ($feed > 0) {
2305                                                 if ($include_children) {
2306                                                         # sub-cats
2307                                                         $subcats = getChildCategories($link, $feed, $owner_uid);
2308
2309                                                         array_push($subcats, $feed);
2310                                                         $query_strategy_part = "cat_id IN (".
2311                                                                         implode(",", $subcats).")";
2312
2313                                                 } else {
2314                                                         $query_strategy_part = "cat_id = '$feed'";
2315                                                 }
2316
2317                                         } else {
2318                                                 $query_strategy_part = "cat_id IS NULL";
2319                                         }
2320
2321                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2322
2323                                 } else {
2324                                         $query_strategy_part = "feed_id = '$feed'";
2325                                 }
2326                         } else if ($feed == 0 && !$cat_view) { // archive virtual feed
2327                                 $query_strategy_part = "feed_id IS NULL";
2328                                 $allow_archived = true;
2329                         } else if ($feed == 0 && $cat_view) { // uncategorized
2330                                 $query_strategy_part = "cat_id IS NULL AND feed_id IS NOT NULL";
2331                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2332                         } else if ($feed == -1) { // starred virtual feed
2333                                 $query_strategy_part = "marked = true";
2334                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2335                                 $allow_archived = true;
2336
2337                                 if (!$override_order) $override_order = "last_marked DESC, updated DESC";
2338
2339                         } else if ($feed == -2) { // published virtual feed OR labels category
2340
2341                                 if (!$cat_view) {
2342                                         $query_strategy_part = "published = true";
2343                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2344                                         $allow_archived = true;
2345
2346                                         if (!$override_order) $override_order = "last_published DESC, updated DESC";
2347                                 } else {
2348                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2349
2350                                         $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2351
2352                                         $query_strategy_part = "ttrss_labels2.id = ttrss_user_labels2.label_id AND
2353                                                 ttrss_user_labels2.article_id = ref_id";
2354
2355                                 }
2356                         } else if ($feed == -6) { // recently read
2357                                 $query_strategy_part = "unread = false AND last_read IS NOT NULL";
2358                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2359                                 $allow_archived = true;
2360
2361                                 if (!$override_order) $override_order = "last_read DESC";
2362                         } else if ($feed == -3) { // fresh virtual feed
2363                                 $query_strategy_part = "unread = true AND score >= 0";
2364
2365                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
2366
2367                                 if (DB_TYPE == "pgsql") {
2368                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
2369                                 } else {
2370                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
2371                                 }
2372
2373                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2374                         } else if ($feed == -4) { // all articles virtual feed
2375                                 $query_strategy_part = "true";
2376                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2377                         } else if ($feed <= -10) { // labels
2378                                 $label_id = -$feed - 11;
2379
2380                                 $query_strategy_part = "label_id = '$label_id' AND
2381                                         ttrss_labels2.id = ttrss_user_labels2.label_id AND
2382                                         ttrss_user_labels2.article_id = ref_id";
2383
2384                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2385                                 $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2386                                 $allow_archived = true;
2387
2388                         } else {
2389                                 $query_strategy_part = "true";
2390                         }
2391
2392                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
2393                                 $date_sort_field = "updated";
2394                         } else {
2395                                 $date_sort_field = "date_entered";
2396                         }
2397
2398                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
2399                                 $order_by = "$date_sort_field";
2400                         } else {
2401                                 $order_by = "$date_sort_field DESC";
2402                         }
2403
2404                         if ($view_mode != "noscores") {
2405                                 $order_by = "score DESC, $order_by";
2406                         }
2407
2408                         if ($override_order) {
2409                                 $order_by = $override_order;
2410                         }
2411
2412                         $feed_title = "";
2413
2414                         if ($search) {
2415                                 $feed_title = T_sprintf("Search results: %s", $search);
2416                         } else {
2417                                 if ($cat_view) {
2418                                         $feed_title = getCategoryTitle($link, $feed);
2419                                 } else {
2420                                         if (is_numeric($feed) && $feed > 0) {
2421                                                 $result = db_query($link, "SELECT title,site_url,last_error
2422                                                         FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = $owner_uid");
2423
2424                                                 $feed_title = db_fetch_result($result, 0, "title");
2425                                                 $feed_site_url = db_fetch_result($result, 0, "site_url");
2426                                                 $last_error = db_fetch_result($result, 0, "last_error");
2427                                         } else {
2428                                                 $feed_title = getFeedTitle($link, $feed);
2429                                         }
2430                                 }
2431                         }
2432
2433                         $content_query_part = "content as content_preview, cached_content, ";
2434
2435                         if (is_numeric($feed)) {
2436
2437                                 if ($feed >= 0) {
2438                                         $feed_kind = "Feeds";
2439                                 } else {
2440                                         $feed_kind = "Labels";
2441                                 }
2442
2443                                 if ($limit_query_part) {
2444                                         $offset_query_part = "OFFSET $offset";
2445                                 }
2446
2447                                 // proper override_order applied above
2448                                 if ($vfeed_query_part && !$ignore_vfeed_group && get_pref($link, 'VFEED_GROUP_BY_FEED', $owner_uid)) {
2449                                         if (!$override_order) {
2450                                                 $order_by = "ttrss_feeds.title, $order_by";
2451                                         } else {
2452                                                 $order_by = "ttrss_feeds.title, $override_order";
2453                                         }
2454                                 }
2455
2456                                 if (!$allow_archived) {
2457                                         $from_qpart = "ttrss_entries,ttrss_user_entries,ttrss_feeds$ext_tables_part";
2458                                         $feed_check_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
2459
2460                                 } else {
2461                                         $from_qpart = "ttrss_entries$ext_tables_part,ttrss_user_entries
2462                                                 LEFT JOIN ttrss_feeds ON (feed_id = ttrss_feeds.id)";
2463                                 }
2464
2465                                 $query = "SELECT DISTINCT
2466                                                 date_entered,
2467                                                 guid,
2468                                                 ttrss_entries.id,ttrss_entries.title,
2469                                                 updated,
2470                                                 label_cache,
2471                                                 tag_cache,
2472                                                 always_display_enclosures,
2473                                                 site_url,
2474                                                 note,
2475                                                 num_comments,
2476                                                 comments,
2477                                                 int_id,
2478                                                 hide_images,
2479                                                 unread,feed_id,marked,published,link,last_read,orig_feed_id,
2480                                                 last_marked, last_published,
2481                                                 ".SUBSTRING_FOR_DATE."(last_read,1,19) as last_read_noms,
2482                                                 $vfeed_query_part
2483                                                 $content_query_part
2484                                                 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated_noms,
2485                                                 author,score
2486                                         FROM
2487                                                 $from_qpart
2488                                         WHERE
2489                                         $feed_check_qpart
2490                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
2491                                         ttrss_user_entries.owner_uid = '$owner_uid' AND
2492                                         $search_query_part
2493                                         $filter_query_part
2494                                         $view_query_part
2495                                         $since_id_part
2496                                         $query_strategy_part ORDER BY $order_by
2497                                         $limit_query_part $offset_query_part";
2498
2499                                 if ($_REQUEST["debug"]) print $query;
2500
2501                                 $result = db_query($link, $query);
2502
2503                         } else {
2504                                 // browsing by tag
2505
2506                                 $select_qpart = "SELECT DISTINCT " .
2507                                                                 "date_entered," .
2508                                                                 "guid," .
2509                                                                 "note," .
2510                                                                 "ttrss_entries.id as id," .
2511                                                                 "title," .
2512                                                                 "updated," .
2513                                                                 "unread," .
2514                                                                 "feed_id," .
2515                                                                 "orig_feed_id," .
2516                                                                 "marked," .
2517                                                                 "num_comments, " .
2518                                                                 "comments, " .
2519                                                                 "tag_cache," .
2520                                                                 "label_cache," .
2521                                                                 "link," .
2522                                                                 "last_read," .
2523                                                                 "(SELECT hide_images FROM ttrss_feeds WHERE id = feed_id) AS hide_images," .
2524                                                                 "last_marked, last_published, " .
2525                                                                 SUBSTRING_FOR_DATE . "(last_read,1,19) as last_read_noms," .
2526                                                                 $since_id_part .
2527                                                                 $vfeed_query_part .
2528                                                                 $content_query_part .
2529                                                                 SUBSTRING_FOR_DATE . "(updated,1,19) as updated_noms," .
2530                                                                 "score ";
2531
2532                                 $feed_kind = "Tags";
2533                                 $all_tags = explode(",", $feed);
2534                                 if ($search_mode == 'any') {
2535                                         $tag_sql = "tag_name in (" . implode(", ", array_map("db_quote", $all_tags)) . ")";
2536                                         $from_qpart = " FROM ttrss_entries,ttrss_user_entries,ttrss_tags ";
2537                                         $where_qpart = " WHERE " .
2538                                                                    "ref_id = ttrss_entries.id AND " .
2539                                                                    "ttrss_user_entries.owner_uid = $owner_uid AND " .
2540                                                                    "post_int_id = int_id AND $tag_sql AND " .
2541                                                                    $view_query_part .
2542                                                                    $search_query_part .
2543                                                                    $query_strategy_part . " ORDER BY $order_by " .
2544                                                                    $limit_query_part;
2545
2546                                 } else {
2547                                         $i = 1;
2548                                         $sub_selects = array();
2549                                         $sub_ands = array();
2550                                         foreach ($all_tags as $term) {
2551                                                 array_push($sub_selects, "(SELECT post_int_id from ttrss_tags WHERE tag_name = " . db_quote($term) . " AND owner_uid = $owner_uid) as A$i");
2552                                                 $i++;
2553                                         }
2554                                         if ($i > 2) {
2555                                                 $x = 1;
2556                                                 $y = 2;
2557                                                 do {
2558                                                         array_push($sub_ands, "A$x.post_int_id = A$y.post_int_id");
2559                                                         $x++;
2560                                                         $y++;
2561                                                 } while ($y < $i);
2562                                         }
2563                                         array_push($sub_ands, "A1.post_int_id = ttrss_user_entries.int_id and ttrss_user_entries.owner_uid = $owner_uid");
2564                                         array_push($sub_ands, "ttrss_user_entries.ref_id = ttrss_entries.id");
2565                                         $from_qpart = " FROM " . implode(", ", $sub_selects) . ", ttrss_user_entries, ttrss_entries";
2566                                         $where_qpart = " WHERE " . implode(" AND ", $sub_ands);
2567                                 }
2568                                 //                              error_log("TAG SQL: " . $tag_sql);
2569                                 // $tag_sql = "tag_name = '$feed'";   DEFAULT way
2570
2571                                 //                              error_log("[". $select_qpart . "][" . $from_qpart . "][" .$where_qpart . "]");
2572                                 $result = db_query($link, $select_qpart . $from_qpart . $where_qpart);
2573                         }
2574
2575                         return array($result, $feed_title, $feed_site_url, $last_error);
2576
2577         }
2578
2579         function sanitize($link, $str, $force_remove_images = false, $owner = false, $site_url = false) {
2580                 if (!$owner) $owner = $_SESSION["uid"];
2581
2582                 $res = trim($str); if (!$res) return '';
2583
2584                 if (strpos($res, "href=") === false)
2585                         $res = rewrite_urls($res);
2586
2587                 $charset_hack = '<head>
2588                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
2589                 </head>';
2590
2591                 $res = trim($res); if (!$res) return '';
2592
2593                 libxml_use_internal_errors(true);
2594
2595                 $doc = new DOMDocument();
2596                 $doc->loadHTML($charset_hack . $res);
2597                 $xpath = new DOMXPath($doc);
2598
2599                 $entries = $xpath->query('(//a[@href]|//img[@src])');
2600
2601                 foreach ($entries as $entry) {
2602
2603                         if ($site_url) {
2604
2605                                 if ($entry->hasAttribute('href'))
2606                                         $entry->setAttribute('href',
2607                                                 rewrite_relative_url($site_url, $entry->getAttribute('href')));
2608
2609                                 if ($entry->hasAttribute('src')) {
2610                                         $src = rewrite_relative_url($site_url, $entry->getAttribute('src'));
2611
2612                                         $cached_filename = CACHE_DIR . '/images/' . sha1($src) . '.png';
2613
2614                                         if (file_exists($cached_filename)) {
2615                                                 $src = SELF_URL_PATH . '/image.php?hash=' . sha1($src);
2616                                         }
2617
2618                                         $entry->setAttribute('src', $src);
2619                                 }
2620
2621                                 if ($entry->nodeName == 'img') {
2622                                         if (($owner && get_pref($link, "STRIP_IMAGES", $owner)) ||
2623                                                         $force_remove_images) {
2624
2625                                                 $p = $doc->createElement('p');
2626
2627                                                 $a = $doc->createElement('a');
2628                                                 $a->setAttribute('href', $entry->getAttribute('src'));
2629
2630                                                 $a->appendChild(new DOMText($entry->getAttribute('src')));
2631                                                 $a->setAttribute('target', '_blank');
2632
2633                                                 $p->appendChild($a);
2634
2635                                                 $entry->parentNode->replaceChild($p, $entry);
2636                                         }
2637                                 }
2638                         }
2639
2640                         if (strtolower($entry->nodeName) == "a") {
2641                                 $entry->setAttribute("target", "_blank");
2642                         }
2643                 }
2644
2645                 $entries = $xpath->query('//iframe');
2646                 foreach ($entries as $entry) {
2647                         $entry->setAttribute('sandbox', 'allow-scripts');
2648
2649                 }
2650
2651                 global $pluginhost;
2652
2653                 if (isset($pluginhost)) {
2654                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_SANITIZE) as $plugin) {
2655                                 $doc = $plugin->hook_sanitize($doc, $site_url);
2656                         }
2657                 }
2658
2659                 $doc->removeChild($doc->firstChild); //remove doctype
2660                 $doc = strip_harmful_tags($doc);
2661                 $res = $doc->saveHTML();
2662                 return $res;
2663         }
2664
2665         function strip_harmful_tags($doc) {
2666                 $entries = $doc->getElementsByTagName("*");
2667
2668                 $allowed_elements = array('a', 'address', 'audio', 'article',
2669                         'b', 'big', 'blockquote', 'body', 'br', 'cite', 'center',
2670                         'code', 'dd', 'del', 'details', 'div', 'dl', 'font',
2671                         'dt', 'em', 'footer', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6',
2672                         'header', 'html', 'i', 'img', 'ins', 'kbd',
2673                         'li', 'nav', 'ol', 'p', 'pre', 'q', 's','small',
2674                         'source', 'span', 'strike', 'strong', 'sub', 'summary',
2675                         'sup', 'table', 'tbody', 'td', 'tfoot', 'th', 'thead',
2676                         'tr', 'track', 'tt', 'u', 'ul', 'var', 'wbr', 'video' );
2677
2678                 if ($_SESSION['hasSandbox']) array_push($allowed_elements, 'iframe');
2679
2680                 $disallowed_attributes = array('id', 'style', 'class');
2681
2682                 foreach ($entries as $entry) {
2683                         if (!in_array($entry->nodeName, $allowed_elements)) {
2684                                 $entry->parentNode->removeChild($entry);
2685                         }
2686
2687                         if ($entry->hasAttributes()) {
2688                                 $attrs_to_remove = array();
2689
2690                                 foreach ($entry->attributes as $attr) {
2691
2692                                         if (strpos($attr->nodeName, 'on') === 0) {
2693                                                 array_push($attrs_to_remove, $attr);
2694                                         }
2695
2696                                         if (in_array($attr->nodeName, $disallowed_attributes)) {
2697                                                 array_push($attrs_to_remove, $attr);
2698                                         }
2699                                 }
2700
2701                                 foreach ($attrs_to_remove as $attr) {
2702                                         $entry->removeAttributeNode($attr);
2703                                 }
2704                         }
2705                 }
2706
2707                 return $doc;
2708         }
2709
2710         function check_for_update($link) {
2711                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2712                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION .
2713                                 "&iid=" . sha1(SELF_URL_PATH);
2714
2715                         $version_data = @fetch_file_contents($version_url);
2716
2717                         if ($version_data) {
2718                                 $version_data = json_decode($version_data, true);
2719                                 if ($version_data && $version_data['version']) {
2720
2721                                         if (version_compare(VERSION, $version_data['version']) == -1) {
2722                                                 return $version_data;
2723                                         }
2724                                 }
2725                         }
2726                 }
2727                 return false;
2728         }
2729
2730         function catchupArticlesById($link, $ids, $cmode, $owner_uid = false) {
2731
2732                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2733                 if (count($ids) == 0) return;
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($link, "UPDATE ttrss_user_entries SET
2745                         unread = false,last_read = NOW()
2746                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2747                 } else if ($cmode == 1) {
2748                         db_query($link, "UPDATE ttrss_user_entries SET
2749                         unread = true
2750                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2751                 } else {
2752                         db_query($link, "UPDATE ttrss_user_entries SET
2753                         unread = NOT unread,last_read = NOW()
2754                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2755                 }
2756
2757                 /* update ccache */
2758
2759                 $result = db_query($link, "SELECT DISTINCT feed_id FROM ttrss_user_entries
2760                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2761
2762                 while ($line = db_fetch_assoc($result)) {
2763                         ccache_update($link, $line["feed_id"], $owner_uid);
2764                 }
2765         }
2766
2767         function get_article_tags($link, $id, $owner_uid = 0, $tag_cache = false) {
2768
2769                 $a_id = db_escape_string($link, $id);
2770
2771                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2772
2773                 $query = "SELECT DISTINCT tag_name,
2774                         owner_uid as owner FROM
2775                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
2776                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
2777
2778                 $obj_id = md5("TAGS:$owner_uid:$id");
2779                 $tags = array();
2780
2781                 /* check cache first */
2782
2783                 if ($tag_cache === false) {
2784                         $result = db_query($link, "SELECT tag_cache FROM ttrss_user_entries
2785                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2786
2787                         $tag_cache = db_fetch_result($result, 0, "tag_cache");
2788                 }
2789
2790                 if ($tag_cache) {
2791                         $tags = explode(",", $tag_cache);
2792                 } else {
2793
2794                         /* do it the hard way */
2795
2796                         $tmp_result = db_query($link, $query);
2797
2798                         while ($tmp_line = db_fetch_assoc($tmp_result)) {
2799                                 array_push($tags, $tmp_line["tag_name"]);
2800                         }
2801
2802                         /* update the cache */
2803
2804                         $tags_str = db_escape_string($link, join(",", $tags));
2805
2806                         db_query($link, "UPDATE ttrss_user_entries
2807                                 SET tag_cache = '$tags_str' WHERE ref_id = '$id'
2808                                 AND owner_uid = $owner_uid");
2809                 }
2810
2811                 return $tags;
2812         }
2813
2814         function trim_array($array) {
2815                 $tmp = $array;
2816                 array_walk($tmp, 'trim');
2817                 return $tmp;
2818         }
2819
2820         function tag_is_valid($tag) {
2821                 if ($tag == '') return false;
2822                 if (preg_match("/^[0-9]*$/", $tag)) return false;
2823                 if (mb_strlen($tag) > 250) return false;
2824
2825                 if (function_exists('iconv')) {
2826                         $tag = iconv("utf-8", "utf-8", $tag);
2827                 }
2828
2829                 if (!$tag) return false;
2830
2831                 return true;
2832         }
2833
2834         function render_login_form($link) {
2835                 require_once "login_form.php";
2836                 exit;
2837         }
2838
2839         // from http://developer.apple.com/internet/safari/faq.html
2840         function no_cache_incantation() {
2841                 header("Expires: Mon, 22 Dec 1980 00:00:00 GMT"); // Happy birthday to me :)
2842                 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
2843                 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); // HTTP/1.1
2844                 header("Cache-Control: post-check=0, pre-check=0", false);
2845                 header("Pragma: no-cache"); // HTTP/1.0
2846         }
2847
2848         function format_warning($msg, $id = "") {
2849                 global $link;
2850                 return "<div class=\"warning\" id=\"$id\">
2851                         <img src=\"images/sign_excl.svg\">$msg</div>";
2852         }
2853
2854         function format_notice($msg, $id = "") {
2855                 global $link;
2856                 return "<div class=\"notice\" id=\"$id\">
2857                         <img src=\"images/sign_info.svg\">$msg</div>";
2858         }
2859
2860         function format_error($msg, $id = "") {
2861                 global $link;
2862                 return "<div class=\"error\" id=\"$id\">
2863                         <img src=\"images/sign_excl.svg\">$msg</div>";
2864         }
2865
2866         function print_notice($msg) {
2867                 return print format_notice($msg);
2868         }
2869
2870         function print_warning($msg) {
2871                 return print format_warning($msg);
2872         }
2873
2874         function print_error($msg) {
2875                 return print format_error($msg);
2876         }
2877
2878
2879         function T_sprintf() {
2880                 $args = func_get_args();
2881                 return vsprintf(__(array_shift($args)), $args);
2882         }
2883
2884         function format_inline_player($link, $url, $ctype) {
2885
2886                 $entry = "";
2887
2888                 $url = htmlspecialchars($url);
2889
2890                 if (strpos($ctype, "audio/") === 0) {
2891
2892                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
2893                                 strpos($_SERVER['HTTP_USER_AGENT'], "Chrome") !== false ||
2894                                 strpos($_SERVER['HTTP_USER_AGENT'], "Safari") !== false )) {
2895
2896                                 $id = 'AUDIO-' . uniqid();
2897
2898                                 $entry .= "<audio id=\"$id\"\" controls style='display : none'>
2899                                         <source type=\"$ctype\" src=\"$url\"></source>
2900                                         </audio>";
2901
2902                                 $entry .= "<span onclick=\"player(this)\"
2903                                         title=\"".__("Click to play")."\" status=\"0\"
2904                                         class=\"player\" audio-id=\"$id\">".__("Play")."</span>";
2905
2906                         } else {
2907
2908                                 $entry .= "<object type=\"application/x-shockwave-flash\"
2909                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
2910                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
2911                                         <param name=\"movie\"
2912                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
2913                                         </object>";
2914                         }
2915
2916                         if ($entry) $entry .= "&nbsp; <a target=\"_blank\"
2917                                 href=\"$url\">" . basename($url) . "</a>";
2918
2919                         return $entry;
2920
2921                 }
2922
2923                 return "";
2924
2925 /*              $filename = substr($url, strrpos($url, "/")+1);
2926
2927                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
2928                         $filename . " (" . $ctype . ")" . "</a>"; */
2929
2930         }
2931
2932         function format_article($link, $id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
2933                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2934
2935                 $rv = array();
2936
2937                 $rv['id'] = $id;
2938
2939                 /* we can figure out feed_id from article id anyway, why do we
2940                  * pass feed_id here? let's ignore the argument :( */
2941
2942                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
2943                         WHERE ref_id = '$id'");
2944
2945                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
2946
2947                 $rv['feed_id'] = $feed_id;
2948
2949                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
2950
2951                 if ($mark_as_read) {
2952                         $result = db_query($link, "UPDATE ttrss_user_entries
2953                                 SET unread = false,last_read = NOW()
2954                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2955
2956                         ccache_update($link, $feed_id, $owner_uid);
2957                 }
2958
2959                 $result = db_query($link, "SELECT id,title,link,content,feed_id,comments,int_id,
2960                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
2961                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
2962                         (SELECT hide_images FROM ttrss_feeds WHERE id = feed_id) as hide_images,
2963                         num_comments,
2964                         tag_cache,
2965                         author,
2966                         orig_feed_id,
2967                         note,
2968                         cached_content
2969                         FROM ttrss_entries,ttrss_user_entries
2970                         WHERE   id = '$id' AND ref_id = id AND owner_uid = $owner_uid");
2971
2972                 if ($result) {
2973
2974                         $line = db_fetch_assoc($result);
2975
2976                         $tag_cache = $line["tag_cache"];
2977
2978                         $line["tags"] = get_article_tags($link, $id, $owner_uid, $line["tag_cache"]);
2979                         unset($line["tag_cache"]);
2980
2981                         $line["content"] = sanitize($link, $line["content"], false, $owner_uid, $line["site_url"]);
2982
2983                         global $pluginhost;
2984
2985                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_RENDER_ARTICLE) as $p) {
2986                                 $line = $p->hook_render_article($line);
2987                         }
2988
2989                         $num_comments = $line["num_comments"];
2990                         $entry_comments = "";
2991
2992                         if ($num_comments > 0) {
2993                                 if ($line["comments"]) {
2994                                         $comments_url = htmlspecialchars($line["comments"]);
2995                                 } else {
2996                                         $comments_url = htmlspecialchars($line["link"]);
2997                                 }
2998                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
2999                         } else {
3000                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
3001                                         $entry_comments = "<a target='_blank' href=\"".htmlspecialchars($line["comments"])."\">comments</a>";
3002                                 }
3003                         }
3004
3005                         if ($zoom_mode) {
3006                                 header("Content-Type: text/html");
3007                                 $rv['content'] .= "<html><head>
3008                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
3009                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
3010                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
3011                                         </head><body id=\"ttrssZoom\">";
3012                         }
3013
3014                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
3015
3016                         $rv['content'] .= "<div class=\"postHeader\" id=\"POSTHDR-$id\">";
3017
3018                         $entry_author = $line["author"];
3019
3020                         if ($entry_author) {
3021                                 $entry_author = __(" - ") . $entry_author;
3022                         }
3023
3024                         $parsed_updated = make_local_datetime($link, $line["updated"], true,
3025                                 $owner_uid, true);
3026
3027                         $rv['content'] .= "<div class=\"postDate\">$parsed_updated</div>";
3028
3029                         if ($line["link"]) {
3030                                 $rv['content'] .= "<div class='postTitle'><a target='_blank'
3031                                         title=\"".htmlspecialchars($line['title'])."\"
3032                                         href=\"" .
3033                                         htmlspecialchars($line["link"]) . "\">" .
3034                                         $line["title"] . "</a>" .
3035                                         "<span class='author'>$entry_author</span></div>";
3036                         } else {
3037                                 $rv['content'] .= "<div class='postTitle'>" . $line["title"] . "$entry_author</div>";
3038                         }
3039
3040                         $tags_str = format_tags_string($line["tags"], $id);
3041                         $tags_str_full = join(", ", $line["tags"]);
3042
3043                         if (!$tags_str_full) $tags_str_full = __("no tags");
3044
3045                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
3046
3047                         $rv['content'] .= "<div class='postTags' style='float : right'>
3048                                 <img src='images/tag.png'
3049                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
3050
3051                         if (!$zoom_mode) {
3052                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
3053                                         <a title=\"".__('Edit tags for this article')."\"
3054                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
3055
3056                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
3057                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
3058                                         position=\"below\">$tags_str_full</div>";
3059
3060                                 global $pluginhost;
3061
3062                                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_ARTICLE_BUTTON) as $p) {
3063                                         $rv['content'] .= $p->hook_article_button($line);
3064                                 }
3065
3066
3067                         } else {
3068                                 $tags_str = strip_tags($tags_str);
3069                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
3070                         }
3071                         $rv['content'] .= "</div>";
3072                         $rv['content'] .= "<div clear='both'>$entry_comments</div>";
3073
3074                         if ($line["orig_feed_id"]) {
3075
3076                                 $tmp_result = db_query($link, "SELECT * FROM ttrss_archived_feeds
3077                                         WHERE id = ".$line["orig_feed_id"]);
3078
3079                                 if (db_num_rows($tmp_result) != 0) {
3080
3081                                         $rv['content'] .= "<div clear='both'>";
3082                                         $rv['content'] .= __("Originally from:");
3083
3084                                         $rv['content'] .= "&nbsp;";
3085
3086                                         $tmp_line = db_fetch_assoc($tmp_result);
3087
3088                                         $rv['content'] .= "<a target='_blank'
3089                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
3090                                                 $tmp_line['title'] . "</a>";
3091
3092                                         $rv['content'] .= "&nbsp;";
3093
3094                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3095                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.svg'></a>";
3096
3097                                         $rv['content'] .= "</div>";
3098                                 }
3099                         }
3100
3101                         $rv['content'] .= "</div>";
3102
3103                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3104                                 if ($line['note']) {
3105                                         $rv['content'] .= format_article_note($id, $line['note'], !$zoom_mode);
3106                                 }
3107                         $rv['content'] .= "</div>";
3108
3109                         $rv['content'] .= "<div class=\"postContent\">";
3110
3111                         $rv['content'] .= $line["content"];
3112
3113                         $rv['content'] .= format_article_enclosures($link, $id,
3114                                 $always_display_enclosures, $line["content"], $line["hide_images"]);
3115
3116                         $rv['content'] .= "</div>";
3117
3118                         $rv['content'] .= "</div>";
3119
3120                 }
3121
3122                 if ($zoom_mode) {
3123                         $rv['content'] .= "
3124                                 <div class='footer'>
3125                                 <button onclick=\"return window.close()\">".
3126                                         __("Close this window")."</button></div>";
3127                         $rv['content'] .= "</body></html>";
3128                 }
3129
3130                 return $rv;
3131
3132         }
3133
3134         function print_checkpoint($n, $s) {
3135                 $ts = microtime(true);
3136                 echo sprintf("<!-- CP[$n] %.4f seconds -->", $ts - $s);
3137                 return $ts;
3138         }
3139
3140         function sanitize_tag($tag) {
3141                 $tag = trim($tag);
3142
3143                 $tag = mb_strtolower($tag, 'utf-8');
3144
3145                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3146
3147 //              $tag = str_replace('"', "", $tag);
3148 //              $tag = str_replace("+", " ", $tag);
3149                 $tag = str_replace("technorati tag: ", "", $tag);
3150
3151                 return $tag;
3152         }
3153
3154         function get_self_url_prefix() {
3155                 if (strrpos(SELF_URL_PATH, "/") === strlen(SELF_URL_PATH)-1) {
3156                         return substr(SELF_URL_PATH, 0, strlen(SELF_URL_PATH)-1);
3157                 } else {
3158                         return SELF_URL_PATH;
3159                 }
3160         }
3161
3162         /**
3163          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3164          *
3165          * @return string The Mozilla Firefox feed adding URL.
3166          */
3167         function add_feed_url() {
3168                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3169
3170                 $url_path = get_self_url_prefix() .
3171                         "/public.php?op=subscribe&feed_url=%s";
3172                 return $url_path;
3173         } // function add_feed_url
3174
3175         function encrypt_password($pass, $salt = '', $mode2 = false) {
3176                 if ($salt && $mode2) {
3177                         return "MODE2:" . hash('sha256', $salt . $pass);
3178                 } else if ($salt) {
3179                         return "SHA1X:" . sha1("$salt:$pass");
3180                 } else {
3181                         return "SHA1:" . sha1($pass);
3182                 }
3183         } // function encrypt_password
3184
3185         function load_filters($link, $feed_id, $owner_uid, $action_id = false) {
3186                 $filters = array();
3187
3188                 $cat_id = (int)getFeedCategory($link, $feed_id);
3189
3190                 $result = db_query($link, "SELECT * FROM ttrss_filters2 WHERE
3191                         owner_uid = $owner_uid AND enabled = true");
3192
3193                 $check_cats = join(",", array_merge(
3194                         getParentCategories($link, $cat_id, $owner_uid),
3195                         array($cat_id)));
3196
3197                 while ($line = db_fetch_assoc($result)) {
3198                         $filter_id = $line["id"];
3199
3200                         $result2 = db_query($link, "SELECT
3201                                 r.reg_exp, r.feed_id, r.cat_id, r.cat_filter, t.name AS type_name
3202                                 FROM ttrss_filters2_rules AS r,
3203                                 ttrss_filter_types AS t
3204                                 WHERE
3205                                         (cat_id IS NULL OR cat_id IN ($check_cats)) AND
3206                                         (feed_id IS NULL OR feed_id = '$feed_id') AND
3207                                         filter_type = t.id AND filter_id = '$filter_id'");
3208
3209                         $rules = array();
3210                         $actions = array();
3211
3212                         while ($rule_line = db_fetch_assoc($result2)) {
3213 #                               print_r($rule_line);
3214
3215                                 $rule = array();
3216                                 $rule["reg_exp"] = $rule_line["reg_exp"];
3217                                 $rule["type"] = $rule_line["type_name"];
3218
3219                                 array_push($rules, $rule);
3220                         }
3221
3222                         $result2 = db_query($link, "SELECT a.action_param,t.name AS type_name
3223                                 FROM ttrss_filters2_actions AS a,
3224                                 ttrss_filter_actions AS t
3225                                 WHERE
3226                                         action_id = t.id AND filter_id = '$filter_id'");
3227
3228                         while ($action_line = db_fetch_assoc($result2)) {
3229 #                               print_r($action_line);
3230
3231                                 $action = array();
3232                                 $action["type"] = $action_line["type_name"];
3233                                 $action["param"] = $action_line["action_param"];
3234
3235                                 array_push($actions, $action);
3236                         }
3237
3238
3239                         $filter = array();
3240                         $filter["match_any_rule"] = sql_bool_to_bool($line["match_any_rule"]);
3241                         $filter["rules"] = $rules;
3242                         $filter["actions"] = $actions;
3243
3244                         if (count($rules) > 0 && count($actions) > 0) {
3245                                 array_push($filters, $filter);
3246                         }
3247                 }
3248
3249                 return $filters;
3250         }
3251
3252         function get_score_pic($score) {
3253                 if ($score > 100) {
3254                         return "score_high.png";
3255                 } else if ($score > 0) {
3256                         return "score_half_high.png";
3257                 } else if ($score < -100) {
3258                         return "score_low.png";
3259                 } else if ($score < 0) {
3260                         return "score_half_low.png";
3261                 } else {
3262                         return "score_neutral.png";
3263                 }
3264         }
3265
3266         function feed_has_icon($id) {
3267                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3268         }
3269
3270         function init_connection($link) {
3271                 if ($link) {
3272
3273                         if (DB_TYPE == "pgsql") {
3274                                 pg_query($link, "set client_encoding = 'UTF-8'");
3275                                 pg_set_client_encoding("UNICODE");
3276                                 pg_query($link, "set datestyle = 'ISO, european'");
3277                                 pg_query($link, "set TIME ZONE 0");
3278                         } else {
3279                                 db_query($link, "SET time_zone = '+0:0'");
3280
3281                                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
3282                                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
3283                                 }
3284                         }
3285
3286                         global $pluginhost;
3287
3288                         $pluginhost = new PluginHost($link);
3289                         $pluginhost->load(PLUGINS, $pluginhost::KIND_ALL);
3290
3291                         return true;
3292                 } else {
3293                         print "Unable to connect to database:" . db_last_error();
3294                         return false;
3295                 }
3296         }
3297
3298         function format_tags_string($tags, $id) {
3299
3300                 $tags_str = "";
3301                 $tags_nolinks_str = "";
3302
3303                 $num_tags = 0;
3304
3305                 $tag_limit = 6;
3306
3307                 $formatted_tags = array();
3308
3309                 foreach ($tags as $tag) {
3310                         $num_tags++;
3311                         $tag_escaped = str_replace("'", "\\'", $tag);
3312
3313                         if (mb_strlen($tag) > 30) {
3314                                 $tag = truncate_string($tag, 30);
3315                         }
3316
3317                         $tag_str = "<a href=\"javascript:viewfeed('$tag_escaped')\">$tag</a>";
3318
3319                         array_push($formatted_tags, $tag_str);
3320
3321                         $tmp_tags_str = implode(", ", $formatted_tags);
3322
3323                         if ($num_tags == $tag_limit || mb_strlen($tmp_tags_str) > 150) {
3324                                 break;
3325                         }
3326                 }
3327
3328                 $tags_str = implode(", ", $formatted_tags);
3329
3330                 if ($num_tags < count($tags)) {
3331                         $tags_str .= ", &hellip;";
3332                 }
3333
3334                 if ($num_tags == 0) {
3335                         $tags_str = __("no tags");
3336                 }
3337
3338                 return $tags_str;
3339
3340         }
3341
3342         function format_article_labels($labels, $id) {
3343
3344                 $labels_str = "";
3345
3346                 foreach ($labels as $l) {
3347                         $labels_str .= sprintf("<span class='hlLabelRef'
3348                                 style='color : %s; background-color : %s'>%s</span>",
3349                                         $l[2], $l[3], $l[1]);
3350                         }
3351
3352                 return $labels_str;
3353
3354         }
3355
3356         function format_article_note($id, $note, $allow_edit = true) {
3357
3358                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
3359                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
3360                         ($allow_edit ? __('(edit note)') : "")."</div>$note</div>";
3361
3362                 return $str;
3363         }
3364
3365
3366         function get_feed_category($link, $feed_cat, $parent_cat_id = false) {
3367                 if ($parent_cat_id) {
3368                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3369                         $parent_insert = "'$parent_cat_id'";
3370                 } else {
3371                         $parent_qpart = "parent_cat IS NULL";
3372                         $parent_insert = "NULL";
3373                 }
3374
3375                 $result = db_query($link,
3376                         "SELECT id FROM ttrss_feed_categories
3377                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3378
3379                 if (db_num_rows($result) == 0) {
3380                         return false;
3381                 } else {
3382                         return db_fetch_result($result, 0, "id");
3383                 }
3384         }
3385
3386         function add_feed_category($link, $feed_cat, $parent_cat_id = false) {
3387
3388                 if (!$feed_cat) return false;
3389
3390                 db_query($link, "BEGIN");
3391
3392                 if ($parent_cat_id) {
3393                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3394                         $parent_insert = "'$parent_cat_id'";
3395                 } else {
3396                         $parent_qpart = "parent_cat IS NULL";
3397                         $parent_insert = "NULL";
3398                 }
3399
3400                 $result = db_query($link,
3401                         "SELECT id FROM ttrss_feed_categories
3402                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3403
3404                 if (db_num_rows($result) == 0) {
3405
3406                         $result = db_query($link,
3407                                 "INSERT INTO ttrss_feed_categories (owner_uid,title,parent_cat)
3408                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat', $parent_insert)");
3409
3410                         db_query($link, "COMMIT");
3411
3412                         return true;
3413                 }
3414
3415                 return false;
3416         }
3417
3418         function getArticleFeed($link, $id) {
3419                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3420                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3421
3422                 if (db_num_rows($result) != 0) {
3423                         return db_fetch_result($result, 0, "feed_id");
3424                 } else {
3425                         return 0;
3426                 }
3427         }
3428
3429         /**
3430          * Fixes incomplete URLs by prepending "http://".
3431          * Also replaces feed:// with http://, and
3432          * prepends a trailing slash if the url is a domain name only.
3433          *
3434          * @param string $url Possibly incomplete URL
3435          *
3436          * @return string Fixed URL.
3437          */
3438         function fix_url($url) {
3439                 if (strpos($url, '://') === false) {
3440                         $url = 'http://' . $url;
3441                 } else if (substr($url, 0, 5) == 'feed:') {
3442                         $url = 'http:' . substr($url, 5);
3443                 }
3444
3445                 //prepend slash if the URL has no slash in it
3446                 // "http://www.example" -> "http://www.example/"
3447                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
3448                         $url .= '/';
3449                 }
3450
3451                 if ($url != "http:///")
3452                         return $url;
3453                 else
3454                         return '';
3455         }
3456
3457         function validate_feed_url($url) {
3458                 $parts = parse_url($url);
3459
3460                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
3461
3462         }
3463
3464         function get_article_enclosures($link, $id) {
3465
3466                 $query = "SELECT * FROM ttrss_enclosures
3467                         WHERE post_id = '$id' AND content_url != ''";
3468
3469                 $rv = array();
3470
3471                 $result = db_query($link, $query);
3472
3473                 if (db_num_rows($result) > 0) {
3474                         while ($line = db_fetch_assoc($result)) {
3475                                 array_push($rv, $line);
3476                         }
3477                 }
3478
3479                 return $rv;
3480         }
3481
3482         function save_email_address($link, $email) {
3483                 // FIXME: implement persistent storage of emails
3484
3485                 if (!$_SESSION['stored_emails'])
3486                         $_SESSION['stored_emails'] = array();
3487
3488                 if (!in_array($email, $_SESSION['stored_emails']))
3489                         array_push($_SESSION['stored_emails'], $email);
3490         }
3491
3492
3493         function get_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
3494
3495                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3496
3497                 $sql_is_cat = bool_to_sql_bool($is_cat);
3498
3499                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
3500                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
3501                         AND owner_uid = " . $owner_uid);
3502
3503                 if (db_num_rows($result) == 1) {
3504                         return db_fetch_result($result, 0, "access_key");
3505                 } else {
3506                         $key = db_escape_string($link, sha1(uniqid(rand(), true)));
3507
3508                         $result = db_query($link, "INSERT INTO ttrss_access_keys
3509                                 (access_key, feed_id, is_cat, owner_uid)
3510                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
3511
3512                         return $key;
3513                 }
3514                 return false;
3515         }
3516
3517         function get_feeds_from_html($url, $content)
3518         {
3519                 $url     = fix_url($url);
3520                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
3521
3522                 libxml_use_internal_errors(true);
3523
3524                 $doc = new DOMDocument();
3525                 $doc->loadHTML($content);
3526                 $xpath = new DOMXPath($doc);
3527                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
3528                 $feedUrls = array();
3529                 foreach ($entries as $entry) {
3530                         if ($entry->hasAttribute('href')) {
3531                                 $title = $entry->getAttribute('title');
3532                                 if ($title == '') {
3533                                         $title = $entry->getAttribute('type');
3534                                 }
3535                                 $feedUrl = rewrite_relative_url(
3536                                         $baseUrl, $entry->getAttribute('href')
3537                                 );
3538                                 $feedUrls[$feedUrl] = $title;
3539                         }
3540                 }
3541                 return $feedUrls;
3542         }
3543
3544         function is_html($content) {
3545                 return preg_match("/<html|DOCTYPE html/i", substr($content, 0, 20)) !== 0;
3546         }
3547
3548         function url_is_html($url, $login = false, $pass = false) {
3549                 return is_html(fetch_file_contents($url, false, $login, $pass));
3550         }
3551
3552         function print_label_select($link, $name, $value, $attributes = "") {
3553
3554                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
3555                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
3556
3557                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
3558                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
3559
3560                 while ($line = db_fetch_assoc($result)) {
3561
3562                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
3563
3564                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
3565                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
3566
3567                 }
3568
3569 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
3570
3571                 print "</select>";
3572
3573
3574         }
3575
3576         function format_article_enclosures($link, $id, $always_display_enclosures,
3577                                         $article_content, $hide_images = false) {
3578
3579                 $result = get_article_enclosures($link, $id);
3580                 $rv = '';
3581
3582                 if (count($result) > 0) {
3583
3584                         $entries_html = array();
3585                         $entries = array();
3586                         $entries_inline = array();
3587
3588                         foreach ($result as $line) {
3589
3590                                 $url = $line["content_url"];
3591                                 $ctype = $line["content_type"];
3592
3593                                 if (!$ctype) $ctype = __("unknown type");
3594
3595                                 $filename = substr($url, strrpos($url, "/")+1);
3596
3597                                 $player = format_inline_player($link, $url, $ctype);
3598
3599                                 if ($player) array_push($entries_inline, $player);
3600
3601 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3602 #                                       $filename . " (" . $ctype . ")" . "</a>";
3603
3604                                 $entry = "<div onclick=\"window.open('".htmlspecialchars($url)."')\"
3605                                         dojoType=\"dijit.MenuItem\">$filename ($ctype)</div>";
3606
3607                                 array_push($entries_html, $entry);
3608
3609                                 $entry = array();
3610
3611                                 $entry["type"] = $ctype;
3612                                 $entry["filename"] = $filename;
3613                                 $entry["url"] = $url;
3614
3615                                 array_push($entries, $entry);
3616                         }
3617
3618                         if ($_SESSION['uid'] && !get_pref($link, "STRIP_IMAGES")) {
3619                                 if ($always_display_enclosures ||
3620                                                         !preg_match("/<img/i", $article_content)) {
3621
3622                                         foreach ($entries as $entry) {
3623
3624                                                 if (preg_match("/image/", $entry["type"]) ||
3625                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
3626
3627                                                                 if (!$hide_images) {
3628                                                                         $rv .= "<p><img
3629                                                                         alt=\"".htmlspecialchars($entry["filename"])."\"
3630                                                                         src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
3631                                                                 } else {
3632                                                                         $rv .= "<p><a target=\"_blank\"
3633                                                                         href=\"".htmlspecialchars($entry["url"])."\"
3634                                                                         >" .htmlspecialchars($entry["url"]) . "</a></p>";
3635
3636                                                                 }
3637                                                 }
3638                                         }
3639                                 }
3640                         }
3641
3642                         if (count($entries_inline) > 0) {
3643                                 $rv .= "<hr clear='both'/>";
3644                                 foreach ($entries_inline as $entry) { $rv .= $entry; };
3645                                 $rv .= "<hr clear='both'/>";
3646                         }
3647
3648                         $rv .= "<br/><div dojoType=\"dijit.form.DropDownButton\">".
3649                                 "<span>" . __('Attachments')."</span>";
3650                         $rv .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3651
3652                         foreach ($entries_html as $entry) { $rv .= $entry; };
3653
3654                         $rv .= "</div></div>";
3655                 }
3656
3657                 return $rv;
3658         }
3659
3660         function getLastArticleId($link) {
3661                 $result = db_query($link, "SELECT MAX(ref_id) AS id FROM ttrss_user_entries
3662                         WHERE owner_uid = " . $_SESSION["uid"]);
3663
3664                 if (db_num_rows($result) == 1) {
3665                         return db_fetch_result($result, 0, "id");
3666                 } else {
3667                         return -1;
3668                 }
3669         }
3670
3671         function build_url($parts) {
3672                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
3673         }
3674
3675         /**
3676          * Converts a (possibly) relative URL to a absolute one.
3677          *
3678          * @param string $url     Base URL (i.e. from where the document is)
3679          * @param string $rel_url Possibly relative URL in the document
3680          *
3681          * @return string Absolute URL
3682          */
3683         function rewrite_relative_url($url, $rel_url) {
3684                 if (strpos($rel_url, "magnet:") === 0) {
3685                         return $rel_url;
3686                 } else if (strpos($rel_url, "://") !== false) {
3687                         return $rel_url;
3688                 } else if (strpos($rel_url, "//") === 0) {
3689                         # protocol-relative URL (rare but they exist)
3690                         return $rel_url;
3691                 } else if (strpos($rel_url, "/") === 0)
3692                 {
3693                         $parts = parse_url($url);
3694                         $parts['path'] = $rel_url;
3695
3696                         return build_url($parts);
3697
3698                 } else {
3699                         $parts = parse_url($url);
3700                         if (!isset($parts['path'])) {
3701                                 $parts['path'] = '/';
3702                         }
3703                         $dir = $parts['path'];
3704                         if (substr($dir, -1) !== '/') {
3705                                 $dir = dirname($parts['path']);
3706                                 $dir !== '/' && $dir .= '/';
3707                         }
3708                         $parts['path'] = $dir . $rel_url;
3709
3710                         return build_url($parts);
3711                 }
3712         }
3713
3714         function sphinx_search($query, $offset = 0, $limit = 30) {
3715                 require_once 'lib/sphinxapi.php';
3716
3717                 $sphinxClient = new SphinxClient();
3718
3719                 $sphinxClient->SetServer('localhost', 9312);
3720                 $sphinxClient->SetConnectTimeout(1);
3721
3722                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
3723                         'feed_title' => 20));
3724
3725                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
3726                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
3727                 $sphinxClient->SetLimits($offset, $limit, 1000);
3728                 $sphinxClient->SetArrayResult(false);
3729                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
3730
3731                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
3732
3733                 $ids = array();
3734
3735                 if (is_array($result['matches'])) {
3736                         foreach (array_keys($result['matches']) as $int_id) {
3737                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
3738                                 array_push($ids, $ref_id);
3739                         }
3740                 }
3741
3742                 return $ids;
3743         }
3744
3745         function cleanup_tags($link, $days = 14, $limit = 1000) {
3746
3747                 if (DB_TYPE == "pgsql") {
3748                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
3749                 } else if (DB_TYPE == "mysql") {
3750                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
3751                 }
3752
3753                 $tags_deleted = 0;
3754
3755                 while ($limit > 0) {
3756                         $limit_part = 500;
3757
3758                         $query = "SELECT ttrss_tags.id AS id
3759                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
3760                                 WHERE post_int_id = int_id AND $interval_query AND
3761                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
3762
3763                         $result = db_query($link, $query);
3764
3765                         $ids = array();
3766
3767                         while ($line = db_fetch_assoc($result)) {
3768                                 array_push($ids, $line['id']);
3769                         }
3770
3771                         if (count($ids) > 0) {
3772                                 $ids = join(",", $ids);
3773                                 print ".";
3774
3775                                 $tmp_result = db_query($link, "DELETE FROM ttrss_tags WHERE id IN ($ids)");
3776                                 $tags_deleted += db_affected_rows($link, $tmp_result);
3777                         } else {
3778                                 break;
3779                         }
3780
3781                         $limit -= $limit_part;
3782                 }
3783
3784                 print "\n";
3785
3786                 return $tags_deleted;
3787         }
3788
3789         function print_user_stylesheet($link) {
3790                 $value = get_pref($link, 'USER_STYLESHEET');
3791
3792                 if ($value) {
3793                         print "<style type=\"text/css\">";
3794                         print str_replace("<br/>", "\n", $value);
3795                         print "</style>";
3796                 }
3797
3798         }
3799
3800         function rewrite_urls($html) {
3801                 libxml_use_internal_errors(true);
3802
3803                 $charset_hack = '<head>
3804                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
3805                 </head>';
3806
3807                 $doc = new DOMDocument();
3808                 $doc->loadHTML($charset_hack . $html);
3809                 $xpath = new DOMXPath($doc);
3810
3811                 $entries = $xpath->query('//*/text()');
3812
3813                 foreach ($entries as $entry) {
3814                         if (strstr($entry->wholeText, "://") !== false) {
3815                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
3816                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
3817
3818                                 if ($text != $entry->wholeText) {
3819                                         $cdoc = new DOMDocument();
3820                                         $cdoc->loadHTML($charset_hack . $text);
3821
3822
3823                                         foreach ($cdoc->childNodes as $cnode) {
3824                                                 $cnode = $doc->importNode($cnode, true);
3825
3826                                                 if ($cnode) {
3827                                                         $entry->parentNode->insertBefore($cnode);
3828                                                 }
3829                                         }
3830
3831                                         $entry->parentNode->removeChild($entry);
3832
3833                                 }
3834                         }
3835                 }
3836
3837                 $node = $doc->getElementsByTagName('body')->item(0);
3838
3839                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
3840                 if ($node)
3841                         return $doc->saveXML($node);
3842                 else
3843                         return $html;
3844         }
3845
3846         function filter_to_sql($link, $filter, $owner_uid) {
3847                 $query = array();
3848
3849                 if (DB_TYPE == "pgsql")
3850                         $reg_qpart = "~";
3851                 else
3852                         $reg_qpart = "REGEXP";
3853
3854                 foreach ($filter["rules"] AS $rule) {
3855                         $regexp_valid = preg_match('/' . $rule['reg_exp'] . '/',
3856                                 $rule['reg_exp']) !== FALSE;
3857
3858                         if ($regexp_valid) {
3859
3860                                 $rule['reg_exp'] = db_escape_string($link, $rule['reg_exp']);
3861
3862                                 switch ($rule["type"]) {
3863                                         case "title":
3864                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3865                                                         $rule['reg_exp'] . "')";
3866                                                 break;
3867                                         case "content":
3868                                                 $qpart = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
3869                                                         $rule['reg_exp'] . "')";
3870                                                 break;
3871                                         case "both":
3872                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3873                                                         $rule['reg_exp'] . "') OR LOWER(" .
3874                                                         "ttrss_entries.content) $reg_qpart LOWER('" . $rule['reg_exp'] . "')";
3875                                                 break;
3876                                         case "tag":
3877                                                 $qpart = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
3878                                                         $rule['reg_exp'] . "')";
3879                                                 break;
3880                                         case "link":
3881                                                 $qpart = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
3882                                                         $rule['reg_exp'] . "')";
3883                                                 break;
3884                                         case "author":
3885                                                 $qpart = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
3886                                                         $rule['reg_exp'] . "')";
3887                                                 break;
3888                                 }
3889
3890                                 if (isset($rule["feed_id"]) && $rule["feed_id"] > 0) {
3891                                         $qpart .= " AND feed_id = " . db_escape_string($link, $rule["feed_id"]);
3892                                 }
3893
3894                                 if (isset($rule["cat_id"])) {
3895
3896                                         if ($rule["cat_id"] > 0) {
3897                                                 $children = getChildCategories($link, $rule["cat_id"], $owner_uid);
3898                                                 array_push($children, $rule["cat_id"]);
3899
3900                                                 $children = join(",", $children);
3901
3902                                                 $cat_qpart = "cat_id IN ($children)";
3903                                         } else {
3904                                                 $cat_qpart = "cat_id IS NULL";
3905                                         }
3906
3907                                         $qpart .= " AND $cat_qpart";
3908                                 }
3909
3910                                 array_push($query, "($qpart)");
3911
3912                         }
3913                 }
3914
3915                 if (count($query) > 0) {
3916                         return "(" . join($filter["match_any_rule"] ? "OR" : "AND", $query) . ")";
3917                 } else {
3918                         return "(false)";
3919                 }
3920         }
3921
3922         if (!function_exists('gzdecode')) {
3923                 function gzdecode($string) { // no support for 2nd argument
3924                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
3925                                 base64_encode($string));
3926                 }
3927         }
3928
3929         function get_random_bytes($length) {
3930                 if (function_exists('openssl_random_pseudo_bytes')) {
3931                         return openssl_random_pseudo_bytes($length);
3932                 } else {
3933                         $output = "";
3934
3935                         for ($i = 0; $i < $length; $i++)
3936                                 $output .= chr(mt_rand(0, 255));
3937
3938                         return $output;
3939                 }
3940         }
3941
3942         function read_stdin() {
3943                 $fp = fopen("php://stdin", "r");
3944
3945                 if ($fp) {
3946                         $line = trim(fgets($fp));
3947                         fclose($fp);
3948                         return $line;
3949                 }
3950
3951                 return null;
3952         }
3953
3954         function tmpdirname($path, $prefix) {
3955                 // Use PHP's tmpfile function to create a temporary
3956                 // directory name. Delete the file and keep the name.
3957                 $tempname = tempnam($path,$prefix);
3958                 if (!$tempname)
3959                         return false;
3960
3961                 if (!unlink($tempname))
3962                         return false;
3963
3964        return $tempname;
3965         }
3966
3967         function getFeedCategory($link, $feed) {
3968                 $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
3969                         WHERE id = '$feed'");
3970
3971                 if (db_num_rows($result) > 0) {
3972                         return db_fetch_result($result, 0, "cat_id");
3973                 } else {
3974                         return false;
3975                 }
3976
3977         }
3978
3979         function implements_interface($class, $interface) {
3980                 return in_array($interface, class_implements($class));
3981         }
3982
3983         function geturl($url){
3984
3985                 (function_exists('curl_init')) ? '' : die('cURL Must be installed for geturl function to work. Ask your host to enable it or uncomment extension=php_curl.dll in php.ini');
3986
3987                 $curl = curl_init();
3988                 $header[0] = "Accept: text/xml,application/xml,application/xhtml+xml,";
3989                 $header[0] .= "text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5";
3990                 $header[] = "Cache-Control: max-age=0";
3991                 $header[] = "Connection: keep-alive";
3992                 $header[] = "Keep-Alive: 300";
3993                 $header[] = "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7";
3994                 $header[] = "Accept-Language: en-us,en;q=0.5";
3995                 $header[] = "Pragma: ";
3996
3997                 curl_setopt($curl, CURLOPT_URL, $url);
3998                 curl_setopt($curl, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20100101 Firefox/5.0 Firefox/5.0');
3999                 curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
4000                 curl_setopt($curl, CURLOPT_HEADER, true);
4001                 curl_setopt($curl, CURLOPT_REFERER, $url);
4002                 curl_setopt($curl, CURLOPT_ENCODING, 'gzip,deflate');
4003                 curl_setopt($curl, CURLOPT_AUTOREFERER, true);
4004                 curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
4005                 //curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); //CURLOPT_FOLLOWLOCATION Disabled...
4006                 curl_setopt($curl, CURLOPT_TIMEOUT, 60);
4007
4008                 $html = curl_exec($curl);
4009
4010                 $status = curl_getinfo($curl);
4011                 curl_close($curl);
4012
4013                 if($status['http_code']!=200){
4014                         if($status['http_code'] == 301 || $status['http_code'] == 302) {
4015                                 list($header) = explode("\r\n\r\n", $html, 2);
4016                                 $matches = array();
4017                                 preg_match("/(Location:|URI:)[^(\n)]*/", $header, $matches);
4018                                 $url = trim(str_replace($matches[1],"",$matches[0]));
4019                                 $url_parsed = parse_url($url);
4020                                 return (isset($url_parsed))? geturl($url, $referer):'';
4021                         }
4022                         $oline='';
4023                         foreach($status as $key=>$eline){$oline.='['.$key.']'.$eline.' ';}
4024                         $line =$oline." \r\n ".$url."\r\n-----------------\r\n";
4025 #                       $handle = @fopen('./curl.error.log', 'a');
4026 #                       fwrite($handle, $line);
4027                         return FALSE;
4028                 }
4029                 return $url;
4030         }
4031
4032         function get_minified_js($files) {
4033                 require_once 'lib/jshrink/Minifier.php';
4034
4035                 $rv = '';
4036
4037                 foreach ($files as $js) {
4038                         if (!isset($_GET['debug'])) {
4039                                 $cached_file = CACHE_DIR . "/js/$js.js";
4040
4041                                 if (file_exists($cached_file) &&
4042                                                 is_readable($cached_file) &&
4043                                                 filemtime($cached_file) >= filemtime("js/$js.js")) {
4044
4045                                         $rv .= file_get_contents($cached_file);
4046
4047                                 } else {
4048                                         $minified = JShrink\Minifier::minify(file_get_contents("js/$js.js"));
4049                                         file_put_contents($cached_file, $minified);
4050                                         $rv .= $minified;
4051                                 }
4052                         } else {
4053                                 $rv .= file_get_contents("js/$js.js");
4054                         }
4055                 }
4056
4057                 return $rv;
4058         }
4059
4060         function stylesheet_tag($filename) {
4061                 $timestamp = filemtime($filename);
4062
4063                 echo "<link rel=\"stylesheet\" type=\"text/css\" href=\"$filename?$timestamp\"/>\n";
4064         }
4065
4066         function javascript_tag($filename) {
4067                 $query = "";
4068
4069                 if (!(strpos($filename, "?") === FALSE)) {
4070                         $query = substr($filename, strpos($filename, "?")+1);
4071                         $filename = substr($filename, 0, strpos($filename, "?"));
4072                 }
4073
4074                 $timestamp = filemtime($filename);
4075
4076                 if ($query) $timestamp .= "&$query";
4077
4078                 echo "<script type=\"text/javascript\" charset=\"utf-8\" src=\"$filename?$timestamp\"></script>\n";
4079         }
4080
4081         function calculate_dep_timestamp() {
4082                 $files = array_merge(glob("js/*.js"), glob("*.css"));
4083
4084                 $max_ts = -1;
4085
4086                 foreach ($files as $file) {
4087                         if (filemtime($file) > $max_ts) $max_ts = filemtime($file);
4088                 }
4089
4090                 return $max_ts;
4091         }
4092
4093 ?>