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 = '', $need_auth = false) {
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                 $allowed_elements = array('a', 'address', 'audio', 'article',
2669                         'b', 'big', 'blockquote', 'body', 'br', 'cite',
2670                         'code', 'dd', 'del', 'details', 'div', 'dl', 'font',
2671                         'dt', 'em', 'footer', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6',
2672                         'header', 'html', 'i', 'img', 'ins', 'kbd',
2673                         'li', 'nav', 'ol', 'p', 'pre', 'q', 's','small',
2674                         'source', 'span', 'strike', 'strong', 'sub', 'summary',
2675                         'sup', 'table', 'tbody', 'td', 'tfoot', 'th', 'thead',
2676                         'tr', 'track', 'tt', 'u', 'ul', 'var', 'wbr', 'video' );
2677
2678                 if ($_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 ($entry->hasAttributes()) {
2688                                 foreach (iterator_to_array($entry->attributes) as $attr) {
2689
2690                                         if (strpos($attr->nodeName, 'on') === 0) {
2691                                                 $entry->removeAttributeNode($attr);
2692                                         }
2693
2694                                         if (in_array($attr->nodeName, $disallowed_attributes)) {
2695                                                 $entry->removeAttributeNode($attr);
2696                                         }
2697                                 }
2698                         }
2699                 }
2700
2701                 return $doc;
2702         }
2703
2704         function check_for_update($link) {
2705                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2706                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION .
2707                                 "&iid=" . sha1(SELF_URL_PATH);
2708
2709                         $version_data = @fetch_file_contents($version_url);
2710
2711                         if ($version_data) {
2712                                 $version_data = json_decode($version_data, true);
2713                                 if ($version_data && $version_data['version']) {
2714
2715                                         if (version_compare(VERSION, $version_data['version']) == -1) {
2716                                                 return $version_data;
2717                                         }
2718                                 }
2719                         }
2720                 }
2721                 return false;
2722         }
2723
2724         function catchupArticlesById($link, $ids, $cmode, $owner_uid = false) {
2725
2726                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2727                 if (count($ids) == 0) return;
2728
2729                 $tmp_ids = array();
2730
2731                 foreach ($ids as $id) {
2732                         array_push($tmp_ids, "ref_id = '$id'");
2733                 }
2734
2735                 $ids_qpart = join(" OR ", $tmp_ids);
2736
2737                 if ($cmode == 0) {
2738                         db_query($link, "UPDATE ttrss_user_entries SET
2739                         unread = false,last_read = NOW()
2740                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2741                 } else if ($cmode == 1) {
2742                         db_query($link, "UPDATE ttrss_user_entries SET
2743                         unread = true
2744                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2745                 } else {
2746                         db_query($link, "UPDATE ttrss_user_entries SET
2747                         unread = NOT unread,last_read = NOW()
2748                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2749                 }
2750
2751                 /* update ccache */
2752
2753                 $result = db_query($link, "SELECT DISTINCT feed_id FROM ttrss_user_entries
2754                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2755
2756                 while ($line = db_fetch_assoc($result)) {
2757                         ccache_update($link, $line["feed_id"], $owner_uid);
2758                 }
2759         }
2760
2761         function get_article_tags($link, $id, $owner_uid = 0, $tag_cache = false) {
2762
2763                 $a_id = db_escape_string($link, $id);
2764
2765                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2766
2767                 $query = "SELECT DISTINCT tag_name,
2768                         owner_uid as owner FROM
2769                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
2770                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
2771
2772                 $obj_id = md5("TAGS:$owner_uid:$id");
2773                 $tags = array();
2774
2775                 /* check cache first */
2776
2777                 if ($tag_cache === false) {
2778                         $result = db_query($link, "SELECT tag_cache FROM ttrss_user_entries
2779                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2780
2781                         $tag_cache = db_fetch_result($result, 0, "tag_cache");
2782                 }
2783
2784                 if ($tag_cache) {
2785                         $tags = explode(",", $tag_cache);
2786                 } else {
2787
2788                         /* do it the hard way */
2789
2790                         $tmp_result = db_query($link, $query);
2791
2792                         while ($tmp_line = db_fetch_assoc($tmp_result)) {
2793                                 array_push($tags, $tmp_line["tag_name"]);
2794                         }
2795
2796                         /* update the cache */
2797
2798                         $tags_str = db_escape_string($link, join(",", $tags));
2799
2800                         db_query($link, "UPDATE ttrss_user_entries
2801                                 SET tag_cache = '$tags_str' WHERE ref_id = '$id'
2802                                 AND owner_uid = $owner_uid");
2803                 }
2804
2805                 return $tags;
2806         }
2807
2808         function trim_array($array) {
2809                 $tmp = $array;
2810                 array_walk($tmp, 'trim');
2811                 return $tmp;
2812         }
2813
2814         function tag_is_valid($tag) {
2815                 if ($tag == '') return false;
2816                 if (preg_match("/^[0-9]*$/", $tag)) return false;
2817                 if (mb_strlen($tag) > 250) return false;
2818
2819                 if (function_exists('iconv')) {
2820                         $tag = iconv("utf-8", "utf-8", $tag);
2821                 }
2822
2823                 if (!$tag) return false;
2824
2825                 return true;
2826         }
2827
2828         function render_login_form($link) {
2829                 require_once "login_form.php";
2830                 exit;
2831         }
2832
2833         // from http://developer.apple.com/internet/safari/faq.html
2834         function no_cache_incantation() {
2835                 header("Expires: Mon, 22 Dec 1980 00:00:00 GMT"); // Happy birthday to me :)
2836                 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
2837                 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); // HTTP/1.1
2838                 header("Cache-Control: post-check=0, pre-check=0", false);
2839                 header("Pragma: no-cache"); // HTTP/1.0
2840         }
2841
2842         function format_warning($msg, $id = "") {
2843                 global $link;
2844                 return "<div class=\"warning\" id=\"$id\">
2845                         <img src=\"images/sign_excl.svg\">$msg</div>";
2846         }
2847
2848         function format_notice($msg, $id = "") {
2849                 global $link;
2850                 return "<div class=\"notice\" id=\"$id\">
2851                         <img src=\"images/sign_info.svg\">$msg</div>";
2852         }
2853
2854         function format_error($msg, $id = "") {
2855                 global $link;
2856                 return "<div class=\"error\" id=\"$id\">
2857                         <img src=\"images/sign_excl.svg\">$msg</div>";
2858         }
2859
2860         function print_notice($msg) {
2861                 return print format_notice($msg);
2862         }
2863
2864         function print_warning($msg) {
2865                 return print format_warning($msg);
2866         }
2867
2868         function print_error($msg) {
2869                 return print format_error($msg);
2870         }
2871
2872
2873         function T_sprintf() {
2874                 $args = func_get_args();
2875                 return vsprintf(__(array_shift($args)), $args);
2876         }
2877
2878         function format_inline_player($link, $url, $ctype) {
2879
2880                 $entry = "";
2881
2882                 $url = htmlspecialchars($url);
2883
2884                 if (strpos($ctype, "audio/") === 0) {
2885
2886                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
2887                                 strpos($_SERVER['HTTP_USER_AGENT'], "Chrome") !== false ||
2888                                 strpos($_SERVER['HTTP_USER_AGENT'], "Safari") !== false )) {
2889
2890                                 $id = 'AUDIO-' . uniqid();
2891
2892                                 $entry .= "<audio id=\"$id\"\" controls style='display : none'>
2893                                         <source type=\"$ctype\" src=\"$url\"></source>
2894                                         </audio>";
2895
2896                                 $entry .= "<span onclick=\"player(this)\"
2897                                         title=\"".__("Click to play")."\" status=\"0\"
2898                                         class=\"player\" audio-id=\"$id\">".__("Play")."</span>";
2899
2900                         } else {
2901
2902                                 $entry .= "<object type=\"application/x-shockwave-flash\"
2903                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
2904                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
2905                                         <param name=\"movie\"
2906                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
2907                                         </object>";
2908                         }
2909
2910                         if ($entry) $entry .= "&nbsp; <a target=\"_blank\"
2911                                 href=\"$url\">" . basename($url) . "</a>";
2912
2913                         return $entry;
2914
2915                 }
2916
2917                 return "";
2918
2919 /*              $filename = substr($url, strrpos($url, "/")+1);
2920
2921                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
2922                         $filename . " (" . $ctype . ")" . "</a>"; */
2923
2924         }
2925
2926         function format_article($link, $id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
2927                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2928
2929                 $rv = array();
2930
2931                 $rv['id'] = $id;
2932
2933                 /* we can figure out feed_id from article id anyway, why do we
2934                  * pass feed_id here? let's ignore the argument :( */
2935
2936                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
2937                         WHERE ref_id = '$id'");
2938
2939                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
2940
2941                 $rv['feed_id'] = $feed_id;
2942
2943                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
2944
2945                 if ($mark_as_read) {
2946                         $result = db_query($link, "UPDATE ttrss_user_entries
2947                                 SET unread = false,last_read = NOW()
2948                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2949
2950                         ccache_update($link, $feed_id, $owner_uid);
2951                 }
2952
2953                 $result = db_query($link, "SELECT id,title,link,content,feed_id,comments,int_id,
2954                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
2955                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
2956                         (SELECT hide_images FROM ttrss_feeds WHERE id = feed_id) as hide_images,
2957                         num_comments,
2958                         tag_cache,
2959                         author,
2960                         orig_feed_id,
2961                         note,
2962                         cached_content
2963                         FROM ttrss_entries,ttrss_user_entries
2964                         WHERE   id = '$id' AND ref_id = id AND owner_uid = $owner_uid");
2965
2966                 if ($result) {
2967
2968                         $line = db_fetch_assoc($result);
2969
2970                         $tag_cache = $line["tag_cache"];
2971
2972                         $line["tags"] = get_article_tags($link, $id, $owner_uid, $line["tag_cache"]);
2973                         unset($line["tag_cache"]);
2974
2975                         $line["content"] = sanitize($link, $line["content"], false, $owner_uid, $line["site_url"]);
2976
2977                         global $pluginhost;
2978
2979                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_RENDER_ARTICLE) as $p) {
2980                                 $line = $p->hook_render_article($line);
2981                         }
2982
2983                         $num_comments = $line["num_comments"];
2984                         $entry_comments = "";
2985
2986                         if ($num_comments > 0) {
2987                                 if ($line["comments"]) {
2988                                         $comments_url = htmlspecialchars($line["comments"]);
2989                                 } else {
2990                                         $comments_url = htmlspecialchars($line["link"]);
2991                                 }
2992                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
2993                         } else {
2994                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
2995                                         $entry_comments = "<a target='_blank' href=\"".htmlspecialchars($line["comments"])."\">comments</a>";
2996                                 }
2997                         }
2998
2999                         if ($zoom_mode) {
3000                                 header("Content-Type: text/html");
3001                                 $rv['content'] .= "<html><head>
3002                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
3003                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
3004                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
3005                                         </head><body>";
3006                         }
3007
3008                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
3009
3010                         $rv['content'] .= "<div class=\"postHeader\" id=\"POSTHDR-$id\">";
3011
3012                         $entry_author = $line["author"];
3013
3014                         if ($entry_author) {
3015                                 $entry_author = __(" - ") . $entry_author;
3016                         }
3017
3018                         $parsed_updated = make_local_datetime($link, $line["updated"], true,
3019                                 $owner_uid, true);
3020
3021                         $rv['content'] .= "<div class=\"postDate\">$parsed_updated</div>";
3022
3023                         if ($line["link"]) {
3024                                 $rv['content'] .= "<div class='postTitle'><a target='_blank'
3025                                         title=\"".htmlspecialchars($line['title'])."\"
3026                                         href=\"" .
3027                                         htmlspecialchars($line["link"]) . "\">" .
3028                                         $line["title"] . "</a>" .
3029                                         "<span class='author'>$entry_author</span></div>";
3030                         } else {
3031                                 $rv['content'] .= "<div class='postTitle'>" . $line["title"] . "$entry_author</div>";
3032                         }
3033
3034                         $tags_str = format_tags_string($line["tags"], $id);
3035                         $tags_str_full = join(", ", $line["tags"]);
3036
3037                         if (!$tags_str_full) $tags_str_full = __("no tags");
3038
3039                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
3040
3041                         $rv['content'] .= "<div class='postTags' style='float : right'>
3042                                 <img src='images/tag.png'
3043                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
3044
3045                         if (!$zoom_mode) {
3046                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
3047                                         <a title=\"".__('Edit tags for this article')."\"
3048                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
3049
3050                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
3051                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
3052                                         position=\"below\">$tags_str_full</div>";
3053
3054                                 global $pluginhost;
3055
3056                                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_ARTICLE_BUTTON) as $p) {
3057                                         $rv['content'] .= $p->hook_article_button($line);
3058                                 }
3059
3060
3061                         } else {
3062                                 $tags_str = strip_tags($tags_str);
3063                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
3064                         }
3065                         $rv['content'] .= "</div>";
3066                         $rv['content'] .= "<div clear='both'>$entry_comments</div>";
3067
3068                         if ($line["orig_feed_id"]) {
3069
3070                                 $tmp_result = db_query($link, "SELECT * FROM ttrss_archived_feeds
3071                                         WHERE id = ".$line["orig_feed_id"]);
3072
3073                                 if (db_num_rows($tmp_result) != 0) {
3074
3075                                         $rv['content'] .= "<div clear='both'>";
3076                                         $rv['content'] .= __("Originally from:");
3077
3078                                         $rv['content'] .= "&nbsp;";
3079
3080                                         $tmp_line = db_fetch_assoc($tmp_result);
3081
3082                                         $rv['content'] .= "<a target='_blank'
3083                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
3084                                                 $tmp_line['title'] . "</a>";
3085
3086                                         $rv['content'] .= "&nbsp;";
3087
3088                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3089                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.svg'></a>";
3090
3091                                         $rv['content'] .= "</div>";
3092                                 }
3093                         }
3094
3095                         $rv['content'] .= "</div>";
3096
3097                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3098                                 if ($line['note']) {
3099                                         $rv['content'] .= format_article_note($id, $line['note'], !$zoom_mode);
3100                                 }
3101                         $rv['content'] .= "</div>";
3102
3103                         $rv['content'] .= "<div class=\"postContent\">";
3104
3105                         $rv['content'] .= $line["content"];
3106
3107                         $rv['content'] .= format_article_enclosures($link, $id,
3108                                 $always_display_enclosures, $line["content"], $line["hide_images"]);
3109
3110                         $rv['content'] .= "</div>";
3111
3112                         $rv['content'] .= "</div>";
3113
3114                 }
3115
3116                 if ($zoom_mode) {
3117                         $rv['content'] .= "
3118                                 <div style=\"text-align : center\">
3119                                 <button onclick=\"return window.close()\">".
3120                                         __("Close this window")."</button></div>";
3121                         $rv['content'] .= "</body></html>";
3122                 }
3123
3124                 return $rv;
3125
3126         }
3127
3128         function print_checkpoint($n, $s) {
3129                 $ts = microtime(true);
3130                 echo sprintf("<!-- CP[$n] %.4f seconds -->", $ts - $s);
3131                 return $ts;
3132         }
3133
3134         function sanitize_tag($tag) {
3135                 $tag = trim($tag);
3136
3137                 $tag = mb_strtolower($tag, 'utf-8');
3138
3139                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3140
3141 //              $tag = str_replace('"', "", $tag);
3142 //              $tag = str_replace("+", " ", $tag);
3143                 $tag = str_replace("technorati tag: ", "", $tag);
3144
3145                 return $tag;
3146         }
3147
3148         function get_self_url_prefix() {
3149                 if (strrpos(SELF_URL_PATH, "/") === strlen(SELF_URL_PATH)-1) {
3150                         return substr(SELF_URL_PATH, 0, strlen(SELF_URL_PATH)-1);
3151                 } else {
3152                         return SELF_URL_PATH;
3153                 }
3154         }
3155
3156         /**
3157          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3158          *
3159          * @return string The Mozilla Firefox feed adding URL.
3160          */
3161         function add_feed_url() {
3162                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3163
3164                 $url_path = get_self_url_prefix() .
3165                         "/public.php?op=subscribe&feed_url=%s";
3166                 return $url_path;
3167         } // function add_feed_url
3168
3169         function encrypt_password($pass, $salt = '', $mode2 = false) {
3170                 if ($salt && $mode2) {
3171                         return "MODE2:" . hash('sha256', $salt . $pass);
3172                 } else if ($salt) {
3173                         return "SHA1X:" . sha1("$salt:$pass");
3174                 } else {
3175                         return "SHA1:" . sha1($pass);
3176                 }
3177         } // function encrypt_password
3178
3179         function load_filters($link, $feed_id, $owner_uid, $action_id = false) {
3180                 $filters = array();
3181
3182                 $cat_id = (int)getFeedCategory($link, $feed_id);
3183
3184                 $result = db_query($link, "SELECT * FROM ttrss_filters2 WHERE
3185                         owner_uid = $owner_uid AND enabled = true");
3186
3187                 $check_cats = join(",", array_merge(
3188                         getParentCategories($link, $cat_id, $owner_uid),
3189                         array($cat_id)));
3190
3191                 while ($line = db_fetch_assoc($result)) {
3192                         $filter_id = $line["id"];
3193
3194                         $result2 = db_query($link, "SELECT
3195                                 r.reg_exp, r.feed_id, r.cat_id, r.cat_filter, t.name AS type_name
3196                                 FROM ttrss_filters2_rules AS r,
3197                                 ttrss_filter_types AS t
3198                                 WHERE
3199                                         (cat_id IS NULL OR cat_id IN ($check_cats)) AND
3200                                         (feed_id IS NULL OR feed_id = '$feed_id') AND
3201                                         filter_type = t.id AND filter_id = '$filter_id'");
3202
3203                         $rules = array();
3204                         $actions = array();
3205
3206                         while ($rule_line = db_fetch_assoc($result2)) {
3207 #                               print_r($rule_line);
3208
3209                                 $rule = array();
3210                                 $rule["reg_exp"] = $rule_line["reg_exp"];
3211                                 $rule["type"] = $rule_line["type_name"];
3212
3213                                 array_push($rules, $rule);
3214                         }
3215
3216                         $result2 = db_query($link, "SELECT a.action_param,t.name AS type_name
3217                                 FROM ttrss_filters2_actions AS a,
3218                                 ttrss_filter_actions AS t
3219                                 WHERE
3220                                         action_id = t.id AND filter_id = '$filter_id'");
3221
3222                         while ($action_line = db_fetch_assoc($result2)) {
3223 #                               print_r($action_line);
3224
3225                                 $action = array();
3226                                 $action["type"] = $action_line["type_name"];
3227                                 $action["param"] = $action_line["action_param"];
3228
3229                                 array_push($actions, $action);
3230                         }
3231
3232
3233                         $filter = array();
3234                         $filter["match_any_rule"] = sql_bool_to_bool($line["match_any_rule"]);
3235                         $filter["rules"] = $rules;
3236                         $filter["actions"] = $actions;
3237
3238                         if (count($rules) > 0 && count($actions) > 0) {
3239                                 array_push($filters, $filter);
3240                         }
3241                 }
3242
3243                 return $filters;
3244         }
3245
3246         function get_score_pic($score) {
3247                 if ($score > 100) {
3248                         return "score_high.png";
3249                 } else if ($score > 0) {
3250                         return "score_half_high.png";
3251                 } else if ($score < -100) {
3252                         return "score_low.png";
3253                 } else if ($score < 0) {
3254                         return "score_half_low.png";
3255                 } else {
3256                         return "score_neutral.png";
3257                 }
3258         }
3259
3260         function feed_has_icon($id) {
3261                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3262         }
3263
3264         function init_connection($link) {
3265                 if ($link) {
3266
3267                         if (DB_TYPE == "pgsql") {
3268                                 pg_query($link, "set client_encoding = 'UTF-8'");
3269                                 pg_set_client_encoding("UNICODE");
3270                                 pg_query($link, "set datestyle = 'ISO, european'");
3271                                 pg_query($link, "set TIME ZONE 0");
3272                         } else {
3273                                 db_query($link, "SET time_zone = '+0:0'");
3274
3275                                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
3276                                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
3277                                 }
3278                         }
3279
3280                         global $pluginhost;
3281
3282                         $pluginhost = new PluginHost($link);
3283                         $pluginhost->load(PLUGINS, $pluginhost::KIND_ALL);
3284
3285                         return true;
3286                 } else {
3287                         print "Unable to connect to database:" . db_last_error();
3288                         return false;
3289                 }
3290         }
3291
3292         function format_tags_string($tags, $id) {
3293
3294                 $tags_str = "";
3295                 $tags_nolinks_str = "";
3296
3297                 $num_tags = 0;
3298
3299                 $tag_limit = 6;
3300
3301                 $formatted_tags = array();
3302
3303                 foreach ($tags as $tag) {
3304                         $num_tags++;
3305                         $tag_escaped = str_replace("'", "\\'", $tag);
3306
3307                         if (mb_strlen($tag) > 30) {
3308                                 $tag = truncate_string($tag, 30);
3309                         }
3310
3311                         $tag_str = "<a href=\"javascript:viewfeed('$tag_escaped')\">$tag</a>";
3312
3313                         array_push($formatted_tags, $tag_str);
3314
3315                         $tmp_tags_str = implode(", ", $formatted_tags);
3316
3317                         if ($num_tags == $tag_limit || mb_strlen($tmp_tags_str) > 150) {
3318                                 break;
3319                         }
3320                 }
3321
3322                 $tags_str = implode(", ", $formatted_tags);
3323
3324                 if ($num_tags < count($tags)) {
3325                         $tags_str .= ", &hellip;";
3326                 }
3327
3328                 if ($num_tags == 0) {
3329                         $tags_str = __("no tags");
3330                 }
3331
3332                 return $tags_str;
3333
3334         }
3335
3336         function format_article_labels($labels, $id) {
3337
3338                 $labels_str = "";
3339
3340                 foreach ($labels as $l) {
3341                         $labels_str .= sprintf("<span class='hlLabelRef'
3342                                 style='color : %s; background-color : %s'>%s</span>",
3343                                         $l[2], $l[3], $l[1]);
3344                         }
3345
3346                 return $labels_str;
3347
3348         }
3349
3350         function format_article_note($id, $note, $allow_edit = true) {
3351
3352                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
3353                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
3354                         ($allow_edit ? __('(edit note)') : "")."</div>$note</div>";
3355
3356                 return $str;
3357         }
3358
3359
3360         function get_feed_category($link, $feed_cat, $parent_cat_id = false) {
3361                 if ($parent_cat_id) {
3362                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3363                         $parent_insert = "'$parent_cat_id'";
3364                 } else {
3365                         $parent_qpart = "parent_cat IS NULL";
3366                         $parent_insert = "NULL";
3367                 }
3368
3369                 $result = db_query($link,
3370                         "SELECT id FROM ttrss_feed_categories
3371                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3372
3373                 if (db_num_rows($result) == 0) {
3374                         return false;
3375                 } else {
3376                         return db_fetch_result($result, 0, "id");
3377                 }
3378         }
3379
3380         function add_feed_category($link, $feed_cat, $parent_cat_id = false) {
3381
3382                 if (!$feed_cat) return false;
3383
3384                 db_query($link, "BEGIN");
3385
3386                 if ($parent_cat_id) {
3387                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3388                         $parent_insert = "'$parent_cat_id'";
3389                 } else {
3390                         $parent_qpart = "parent_cat IS NULL";
3391                         $parent_insert = "NULL";
3392                 }
3393
3394                 $result = db_query($link,
3395                         "SELECT id FROM ttrss_feed_categories
3396                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3397
3398                 if (db_num_rows($result) == 0) {
3399
3400                         $result = db_query($link,
3401                                 "INSERT INTO ttrss_feed_categories (owner_uid,title,parent_cat)
3402                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat', $parent_insert)");
3403
3404                         db_query($link, "COMMIT");
3405
3406                         return true;
3407                 }
3408
3409                 return false;
3410         }
3411
3412         function getArticleFeed($link, $id) {
3413                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3414                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3415
3416                 if (db_num_rows($result) != 0) {
3417                         return db_fetch_result($result, 0, "feed_id");
3418                 } else {
3419                         return 0;
3420                 }
3421         }
3422
3423         /**
3424          * Fixes incomplete URLs by prepending "http://".
3425          * Also replaces feed:// with http://, and
3426          * prepends a trailing slash if the url is a domain name only.
3427          *
3428          * @param string $url Possibly incomplete URL
3429          *
3430          * @return string Fixed URL.
3431          */
3432         function fix_url($url) {
3433                 if (strpos($url, '://') === false) {
3434                         $url = 'http://' . $url;
3435                 } else if (substr($url, 0, 5) == 'feed:') {
3436                         $url = 'http:' . substr($url, 5);
3437                 }
3438
3439                 //prepend slash if the URL has no slash in it
3440                 // "http://www.example" -> "http://www.example/"
3441                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
3442                         $url .= '/';
3443                 }
3444
3445                 if ($url != "http:///")
3446                         return $url;
3447                 else
3448                         return '';
3449         }
3450
3451         function validate_feed_url($url) {
3452                 $parts = parse_url($url);
3453
3454                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
3455
3456         }
3457
3458         function get_article_enclosures($link, $id) {
3459
3460                 $query = "SELECT * FROM ttrss_enclosures
3461                         WHERE post_id = '$id' AND content_url != ''";
3462
3463                 $rv = array();
3464
3465                 $result = db_query($link, $query);
3466
3467                 if (db_num_rows($result) > 0) {
3468                         while ($line = db_fetch_assoc($result)) {
3469                                 array_push($rv, $line);
3470                         }
3471                 }
3472
3473                 return $rv;
3474         }
3475
3476         function save_email_address($link, $email) {
3477                 // FIXME: implement persistent storage of emails
3478
3479                 if (!$_SESSION['stored_emails'])
3480                         $_SESSION['stored_emails'] = array();
3481
3482                 if (!in_array($email, $_SESSION['stored_emails']))
3483                         array_push($_SESSION['stored_emails'], $email);
3484         }
3485
3486
3487         function get_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
3488
3489                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3490
3491                 $sql_is_cat = bool_to_sql_bool($is_cat);
3492
3493                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
3494                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
3495                         AND owner_uid = " . $owner_uid);
3496
3497                 if (db_num_rows($result) == 1) {
3498                         return db_fetch_result($result, 0, "access_key");
3499                 } else {
3500                         $key = db_escape_string($link, sha1(uniqid(rand(), true)));
3501
3502                         $result = db_query($link, "INSERT INTO ttrss_access_keys
3503                                 (access_key, feed_id, is_cat, owner_uid)
3504                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
3505
3506                         return $key;
3507                 }
3508                 return false;
3509         }
3510
3511         function get_feeds_from_html($url, $content)
3512         {
3513                 $url     = fix_url($url);
3514                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
3515
3516                 libxml_use_internal_errors(true);
3517
3518                 $doc = new DOMDocument();
3519                 $doc->loadHTML($content);
3520                 $xpath = new DOMXPath($doc);
3521                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
3522                 $feedUrls = array();
3523                 foreach ($entries as $entry) {
3524                         if ($entry->hasAttribute('href')) {
3525                                 $title = $entry->getAttribute('title');
3526                                 if ($title == '') {
3527                                         $title = $entry->getAttribute('type');
3528                                 }
3529                                 $feedUrl = rewrite_relative_url(
3530                                         $baseUrl, $entry->getAttribute('href')
3531                                 );
3532                                 $feedUrls[$feedUrl] = $title;
3533                         }
3534                 }
3535                 return $feedUrls;
3536         }
3537
3538         function is_html($content) {
3539                 return preg_match("/<html|DOCTYPE html/i", substr($content, 0, 20)) !== 0;
3540         }
3541
3542         function url_is_html($url, $login = false, $pass = false) {
3543                 return is_html(fetch_file_contents($url, false, $login, $pass));
3544         }
3545
3546         function print_label_select($link, $name, $value, $attributes = "") {
3547
3548                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
3549                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
3550
3551                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
3552                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
3553
3554                 while ($line = db_fetch_assoc($result)) {
3555
3556                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
3557
3558                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
3559                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
3560
3561                 }
3562
3563 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
3564
3565                 print "</select>";
3566
3567
3568         }
3569
3570         function format_article_enclosures($link, $id, $always_display_enclosures,
3571                                         $article_content, $hide_images = false) {
3572
3573                 $result = get_article_enclosures($link, $id);
3574                 $rv = '';
3575
3576                 if (count($result) > 0) {
3577
3578                         $entries_html = array();
3579                         $entries = array();
3580                         $entries_inline = array();
3581
3582                         foreach ($result as $line) {
3583
3584                                 $url = $line["content_url"];
3585                                 $ctype = $line["content_type"];
3586
3587                                 if (!$ctype) $ctype = __("unknown type");
3588
3589                                 $filename = substr($url, strrpos($url, "/")+1);
3590
3591                                 $player = format_inline_player($link, $url, $ctype);
3592
3593                                 if ($player) array_push($entries_inline, $player);
3594
3595 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3596 #                                       $filename . " (" . $ctype . ")" . "</a>";
3597
3598                                 $entry = "<div onclick=\"window.open('".htmlspecialchars($url)."')\"
3599                                         dojoType=\"dijit.MenuItem\">$filename ($ctype)</div>";
3600
3601                                 array_push($entries_html, $entry);
3602
3603                                 $entry = array();
3604
3605                                 $entry["type"] = $ctype;
3606                                 $entry["filename"] = $filename;
3607                                 $entry["url"] = $url;
3608
3609                                 array_push($entries, $entry);
3610                         }
3611
3612                         if ($_SESSION['uid'] && !get_pref($link, "STRIP_IMAGES")) {
3613                                 if ($always_display_enclosures ||
3614                                                         !preg_match("/<img/i", $article_content)) {
3615
3616                                         foreach ($entries as $entry) {
3617
3618                                                 if (preg_match("/image/", $entry["type"]) ||
3619                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
3620
3621                                                                 if (!$hide_images) {
3622                                                                         $rv .= "<p><img
3623                                                                         alt=\"".htmlspecialchars($entry["filename"])."\"
3624                                                                         src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
3625                                                                 } else {
3626                                                                         $rv .= "<p><a target=\"_blank\"
3627                                                                         href=\"".htmlspecialchars($entry["url"])."\"
3628                                                                         >" .htmlspecialchars($entry["url"]) . "</a></p>";
3629
3630                                                                 }
3631                                                 }
3632                                         }
3633                                 }
3634                         }
3635
3636                         if (count($entries_inline) > 0) {
3637                                 $rv .= "<hr clear='both'/>";
3638                                 foreach ($entries_inline as $entry) { $rv .= $entry; };
3639                                 $rv .= "<hr clear='both'/>";
3640                         }
3641
3642                         $rv .= "<br/><div dojoType=\"dijit.form.DropDownButton\">".
3643                                 "<span>" . __('Attachments')."</span>";
3644                         $rv .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3645
3646                         foreach ($entries_html as $entry) { $rv .= $entry; };
3647
3648                         $rv .= "</div></div>";
3649                 }
3650
3651                 return $rv;
3652         }
3653
3654         function getLastArticleId($link) {
3655                 $result = db_query($link, "SELECT MAX(ref_id) AS id FROM ttrss_user_entries
3656                         WHERE owner_uid = " . $_SESSION["uid"]);
3657
3658                 if (db_num_rows($result) == 1) {
3659                         return db_fetch_result($result, 0, "id");
3660                 } else {
3661                         return -1;
3662                 }
3663         }
3664
3665         function build_url($parts) {
3666                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
3667         }
3668
3669         /**
3670          * Converts a (possibly) relative URL to a absolute one.
3671          *
3672          * @param string $url     Base URL (i.e. from where the document is)
3673          * @param string $rel_url Possibly relative URL in the document
3674          *
3675          * @return string Absolute URL
3676          */
3677         function rewrite_relative_url($url, $rel_url) {
3678                 if (strpos($rel_url, "magnet:") === 0) {
3679                         return $rel_url;
3680                 } else if (strpos($rel_url, "://") !== false) {
3681                         return $rel_url;
3682                 } else if (strpos($rel_url, "//") === 0) {
3683                         # protocol-relative URL (rare but they exist)
3684                         return $rel_url;
3685                 } else if (strpos($rel_url, "/") === 0)
3686                 {
3687                         $parts = parse_url($url);
3688                         $parts['path'] = $rel_url;
3689
3690                         return build_url($parts);
3691
3692                 } else {
3693                         $parts = parse_url($url);
3694                         if (!isset($parts['path'])) {
3695                                 $parts['path'] = '/';
3696                         }
3697                         $dir = $parts['path'];
3698                         if (substr($dir, -1) !== '/') {
3699                                 $dir = dirname($parts['path']);
3700                                 $dir !== '/' && $dir .= '/';
3701                         }
3702                         $parts['path'] = $dir . $rel_url;
3703
3704                         return build_url($parts);
3705                 }
3706         }
3707
3708         function sphinx_search($query, $offset = 0, $limit = 30) {
3709                 require_once 'lib/sphinxapi.php';
3710
3711                 $sphinxClient = new SphinxClient();
3712
3713                 $sphinxClient->SetServer('localhost', 9312);
3714                 $sphinxClient->SetConnectTimeout(1);
3715
3716                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
3717                         'feed_title' => 20));
3718
3719                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
3720                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
3721                 $sphinxClient->SetLimits($offset, $limit, 1000);
3722                 $sphinxClient->SetArrayResult(false);
3723                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
3724
3725                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
3726
3727                 $ids = array();
3728
3729                 if (is_array($result['matches'])) {
3730                         foreach (array_keys($result['matches']) as $int_id) {
3731                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
3732                                 array_push($ids, $ref_id);
3733                         }
3734                 }
3735
3736                 return $ids;
3737         }
3738
3739         function cleanup_tags($link, $days = 14, $limit = 1000) {
3740
3741                 if (DB_TYPE == "pgsql") {
3742                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
3743                 } else if (DB_TYPE == "mysql") {
3744                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
3745                 }
3746
3747                 $tags_deleted = 0;
3748
3749                 while ($limit > 0) {
3750                         $limit_part = 500;
3751
3752                         $query = "SELECT ttrss_tags.id AS id
3753                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
3754                                 WHERE post_int_id = int_id AND $interval_query AND
3755                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
3756
3757                         $result = db_query($link, $query);
3758
3759                         $ids = array();
3760
3761                         while ($line = db_fetch_assoc($result)) {
3762                                 array_push($ids, $line['id']);
3763                         }
3764
3765                         if (count($ids) > 0) {
3766                                 $ids = join(",", $ids);
3767                                 print ".";
3768
3769                                 $tmp_result = db_query($link, "DELETE FROM ttrss_tags WHERE id IN ($ids)");
3770                                 $tags_deleted += db_affected_rows($link, $tmp_result);
3771                         } else {
3772                                 break;
3773                         }
3774
3775                         $limit -= $limit_part;
3776                 }
3777
3778                 print "\n";
3779
3780                 return $tags_deleted;
3781         }
3782
3783         function print_user_stylesheet($link) {
3784                 $value = get_pref($link, 'USER_STYLESHEET');
3785
3786                 if ($value) {
3787                         print "<style type=\"text/css\">";
3788                         print str_replace("<br/>", "\n", $value);
3789                         print "</style>";
3790                 }
3791
3792         }
3793
3794         function rewrite_urls($html) {
3795                 libxml_use_internal_errors(true);
3796
3797                 $charset_hack = '<head>
3798                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
3799                 </head>';
3800
3801                 $doc = new DOMDocument();
3802                 $doc->loadHTML($charset_hack . $html);
3803                 $xpath = new DOMXPath($doc);
3804
3805                 $entries = $xpath->query('//*/text()');
3806
3807                 foreach ($entries as $entry) {
3808                         if (strstr($entry->wholeText, "://") !== false) {
3809                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
3810                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
3811
3812                                 if ($text != $entry->wholeText) {
3813                                         $cdoc = new DOMDocument();
3814                                         $cdoc->loadHTML($charset_hack . $text);
3815
3816
3817                                         foreach ($cdoc->childNodes as $cnode) {
3818                                                 $cnode = $doc->importNode($cnode, true);
3819
3820                                                 if ($cnode) {
3821                                                         $entry->parentNode->insertBefore($cnode);
3822                                                 }
3823                                         }
3824
3825                                         $entry->parentNode->removeChild($entry);
3826
3827                                 }
3828                         }
3829                 }
3830
3831                 $node = $doc->getElementsByTagName('body')->item(0);
3832
3833                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
3834                 if ($node)
3835                         return $doc->saveXML($node);
3836                 else
3837                         return $html;
3838         }
3839
3840         function filter_to_sql($link, $filter, $owner_uid) {
3841                 $query = array();
3842
3843                 if (DB_TYPE == "pgsql")
3844                         $reg_qpart = "~";
3845                 else
3846                         $reg_qpart = "REGEXP";
3847
3848                 foreach ($filter["rules"] AS $rule) {
3849                         $regexp_valid = preg_match('/' . $rule['reg_exp'] . '/',
3850                                 $rule['reg_exp']) !== FALSE;
3851
3852                         if ($regexp_valid) {
3853
3854                                 $rule['reg_exp'] = db_escape_string($link, $rule['reg_exp']);
3855
3856                                 switch ($rule["type"]) {
3857                                         case "title":
3858                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3859                                                         $rule['reg_exp'] . "')";
3860                                                 break;
3861                                         case "content":
3862                                                 $qpart = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
3863                                                         $rule['reg_exp'] . "')";
3864                                                 break;
3865                                         case "both":
3866                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3867                                                         $rule['reg_exp'] . "') OR LOWER(" .
3868                                                         "ttrss_entries.content) $reg_qpart LOWER('" . $rule['reg_exp'] . "')";
3869                                                 break;
3870                                         case "tag":
3871                                                 $qpart = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
3872                                                         $rule['reg_exp'] . "')";
3873                                                 break;
3874                                         case "link":
3875                                                 $qpart = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
3876                                                         $rule['reg_exp'] . "')";
3877                                                 break;
3878                                         case "author":
3879                                                 $qpart = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
3880                                                         $rule['reg_exp'] . "')";
3881                                                 break;
3882                                 }
3883
3884                                 if (isset($rule["feed_id"]) && $rule["feed_id"] > 0) {
3885                                         $qpart .= " AND feed_id = " . db_escape_string($link, $rule["feed_id"]);
3886                                 }
3887
3888                                 if (isset($rule["cat_id"])) {
3889
3890                                         if ($rule["cat_id"] > 0) {
3891                                                 $children = getChildCategories($link, $rule["cat_id"], $owner_uid);
3892                                                 array_push($children, $rule["cat_id"]);
3893
3894                                                 $children = join(",", $children);
3895
3896                                                 $cat_qpart = "cat_id IN ($children)";
3897                                         } else {
3898                                                 $cat_qpart = "cat_id IS NULL";
3899                                         }
3900
3901                                         $qpart .= " AND $cat_qpart";
3902                                 }
3903
3904                                 array_push($query, "($qpart)");
3905
3906                         }
3907                 }
3908
3909                 if (count($query) > 0) {
3910                         return "(" . join($filter["match_any_rule"] ? "OR" : "AND", $query) . ")";
3911                 } else {
3912                         return "(false)";
3913                 }
3914         }
3915
3916         if (!function_exists('gzdecode')) {
3917                 function gzdecode($string) { // no support for 2nd argument
3918                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
3919                                 base64_encode($string));
3920                 }
3921         }
3922
3923         function get_random_bytes($length) {
3924                 if (function_exists('openssl_random_pseudo_bytes')) {
3925                         return openssl_random_pseudo_bytes($length);
3926                 } else {
3927                         $output = "";
3928
3929                         for ($i = 0; $i < $length; $i++)
3930                                 $output .= chr(mt_rand(0, 255));
3931
3932                         return $output;
3933                 }
3934         }
3935
3936         function read_stdin() {
3937                 $fp = fopen("php://stdin", "r");
3938
3939                 if ($fp) {
3940                         $line = trim(fgets($fp));
3941                         fclose($fp);
3942                         return $line;
3943                 }
3944
3945                 return null;
3946         }
3947
3948         function tmpdirname($path, $prefix) {
3949                 // Use PHP's tmpfile function to create a temporary
3950                 // directory name. Delete the file and keep the name.
3951                 $tempname = tempnam($path,$prefix);
3952                 if (!$tempname)
3953                         return false;
3954
3955                 if (!unlink($tempname))
3956                         return false;
3957
3958        return $tempname;
3959         }
3960
3961         function getFeedCategory($link, $feed) {
3962                 $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
3963                         WHERE id = '$feed'");
3964
3965                 if (db_num_rows($result) > 0) {
3966                         return db_fetch_result($result, 0, "cat_id");
3967                 } else {
3968                         return false;
3969                 }
3970
3971         }
3972
3973         function implements_interface($class, $interface) {
3974                 return in_array($interface, class_implements($class));
3975         }
3976
3977         function geturl($url){
3978
3979                 (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');
3980
3981                 $curl = curl_init();
3982                 $header[0] = "Accept: text/xml,application/xml,application/xhtml+xml,";
3983                 $header[0] .= "text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5";
3984                 $header[] = "Cache-Control: max-age=0";
3985                 $header[] = "Connection: keep-alive";
3986                 $header[] = "Keep-Alive: 300";
3987                 $header[] = "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7";
3988                 $header[] = "Accept-Language: en-us,en;q=0.5";
3989                 $header[] = "Pragma: ";
3990
3991                 curl_setopt($curl, CURLOPT_URL, $url);
3992                 curl_setopt($curl, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20100101 Firefox/5.0 Firefox/5.0');
3993                 curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
3994                 curl_setopt($curl, CURLOPT_HEADER, true);
3995                 curl_setopt($curl, CURLOPT_REFERER, $url);
3996                 curl_setopt($curl, CURLOPT_ENCODING, 'gzip,deflate');
3997                 curl_setopt($curl, CURLOPT_AUTOREFERER, true);
3998                 curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
3999                 //curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); //CURLOPT_FOLLOWLOCATION Disabled...
4000                 curl_setopt($curl, CURLOPT_TIMEOUT, 60);
4001
4002                 $html = curl_exec($curl);
4003
4004                 $status = curl_getinfo($curl);
4005                 curl_close($curl);
4006
4007                 if($status['http_code']!=200){
4008                         if($status['http_code'] == 301 || $status['http_code'] == 302) {
4009                                 list($header) = explode("\r\n\r\n", $html, 2);
4010                                 $matches = array();
4011                                 preg_match("/(Location:|URI:)[^(\n)]*/", $header, $matches);
4012                                 $url = trim(str_replace($matches[1],"",$matches[0]));
4013                                 $url_parsed = parse_url($url);
4014                                 return (isset($url_parsed))? geturl($url, $referer):'';
4015                         }
4016                         $oline='';
4017                         foreach($status as $key=>$eline){$oline.='['.$key.']'.$eline.' ';}
4018                         $line =$oline." \r\n ".$url."\r\n-----------------\r\n";
4019 #                       $handle = @fopen('./curl.error.log', 'a');
4020 #                       fwrite($handle, $line);
4021                         return FALSE;
4022                 }
4023                 return $url;
4024         }
4025
4026         function get_minified_js($files) {
4027                 require_once 'lib/jshrink/Minifier.php';
4028
4029                 $rv = '';
4030
4031                 foreach ($files as $js) {
4032                         if (!isset($_GET['debug'])) {
4033                                 $cached_file = CACHE_DIR . "/js/$js.js";
4034
4035                                 if (file_exists($cached_file) &&
4036                                                 is_readable($cached_file) &&
4037                                                 filemtime($cached_file) >= filemtime("js/$js.js")) {
4038
4039                                         $rv .= file_get_contents($cached_file);
4040
4041                                 } else {
4042                                         $minified = JShrink\Minifier::minify(file_get_contents("js/$js.js"));
4043                                         file_put_contents($cached_file, $minified);
4044                                         $rv .= $minified;
4045                                 }
4046                         } else {
4047                                 $rv .= file_get_contents("js/$js.js");
4048                         }
4049                 }
4050
4051                 return $rv;
4052         }
4053
4054         function stylesheet_tag($filename) {
4055                 $timestamp = filemtime($filename);
4056
4057                 echo "<link rel=\"stylesheet\" type=\"text/css\" href=\"$filename?$timestamp\"/>\n";
4058         }
4059
4060         function javascript_tag($filename) {
4061                 $query = "";
4062
4063                 if (!(strpos($filename, "?") === FALSE)) {
4064                         $query = substr($filename, strpos($filename, "?")+1);
4065                         $filename = substr($filename, 0, strpos($filename, "?"));
4066                 }
4067
4068                 $timestamp = filemtime($filename);
4069
4070                 if ($query) $timestamp .= "&$query";
4071
4072                 echo "<script type=\"text/javascript\" charset=\"utf-8\" src=\"$filename?$timestamp\"></script>\n";
4073         }
4074
4075         function calculate_dep_timestamp() {
4076                 $files = array_merge(glob("js/*.js"), glob("*.css"));
4077
4078                 $max_ts = -1;
4079
4080                 foreach ($files as $file) {
4081                         if (filemtime($file) > $max_ts) $max_ts = filemtime($file);
4082                 }
4083
4084                 return $max_ts;
4085         }
4086
4087     function get_site_title() {
4088         if (defined("_SITE_TITLE")) {
4089             return _SITE_TITLE;
4090         } else {
4091                 return "Tiny Tiny RSS";
4092                   }
4093     }
4094 ?>