include/functions.php

   1 <?php
   2         define('EXPECTED_CONFIG_VERSION', 26);
   3         define('SCHEMA_VERSION', 105);
   4
   5         $fetch_last_error = false;
   6         $pluginhost = false;
   7
   8         function __autoload($class) {
   9                 $class_file = str_replace("_", "/", strtolower(basename($class)));
  10
  11                 $file = dirname(__FILE__)."/../classes/$class_file.php";
  12
  13                 if (file_exists($file)) {
  14                         require $file;
  15                 }
  16
  17         }
  18
  19         mb_internal_encoding("UTF-8");
  20         date_default_timezone_set('UTC');
  21         if (defined('E_DEPRECATED')) {
  22                 error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
  23         } else {
  24                 error_reporting(E_ALL & ~E_NOTICE);
  25         }
  26
  27         require_once 'config.php';
  28
  29         if (DB_TYPE == "pgsql") {
  30                 define('SUBSTRING_FOR_DATE', 'SUBSTRING_FOR_DATE');
  31         } else {
  32                 define('SUBSTRING_FOR_DATE', 'SUBSTRING');
  33         }
  34
  35         define('THEME_VERSION_REQUIRED', 1.1);
  36
  37         /**
  38          * Return available translations names.
  39          *
  40          * @access public
  41          * @return array A array of available translations.
  42          */
  43         function get_translations() {
  44                 $tr = array(
  45                                         "auto"  => "Detect automatically",
  46                                         "ca_CA" => "Català",
  47                                         "en_US" => "English",
  48                                         "es_ES" => "Español",
  49                                         "de_DE" => "Deutsch",
  50                                         "fr_FR" => "Français",
  51                                         "hu_HU" => "Magyar (Hungarian)",
  52                                         "it_IT" => "Italiano",
  53                                         "ja_JP" => "日本語 (Japanese)",
  54                                         "nb_NO" => "Norwegian bokmål",
  55                                         "pl_PL" => "Polski",
  56                                         "ru_RU" => "Русский",
  57                                         "pt_BR" => "Portuguese/Brazil",
  58                                         "zh_CN" => "Simplified Chinese");
  59
  60                 return $tr;
  61         }
  62
  63         require_once "lib/accept-to-gettext.php";
  64         require_once "lib/gettext/gettext.inc";
  65
  66
  67         function startup_gettext() {
  68
  69                 # Get locale from Accept-Language header
  70                 $lang = al2gt(array_keys(get_translations()), "text/html");
  71
  72                 if (defined('_TRANSLATION_OVERRIDE_DEFAULT')) {
  73                         $lang = _TRANSLATION_OVERRIDE_DEFAULT;
  74                 }
  75
  76                 /* In login action of mobile version */
  77                 if ($_POST["language"] && defined('MOBILE_VERSION')) {
  78                         $lang = $_POST["language"];
  79                 } else if ($_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                         if (defined('MOBILE_VERSION')) {
  91                                 _bindtextdomain("messages", "../locale");
  92                         } else {
  93                                 _bindtextdomain("messages", "locale");
  94                         }
  95
  96                         _textdomain("messages");
  97                         _bind_textdomain_codeset("messages", "UTF-8");
  98                 }
  99         }
 100
 101         startup_gettext();
 102
 103         require_once 'db-prefs.php';
 104         require_once 'version.php';
 105         require_once 'ccache.php';
 106         require_once 'labels.php';
 107
 108         define('SELF_USER_AGENT', 'Tiny Tiny RSS/' . VERSION . ' (http://tt-rss.org/)');
 109         ini_set('user_agent', SELF_USER_AGENT);
 110
 111         require_once 'lib/pubsubhubbub/publisher.php';
 112         require_once 'lib/htmLawed.php';
 113
 114         $tz_offset = -1;
 115         $utc_tz = new DateTimeZone('UTC');
 116         $schema_version = false;
 117
 118         /**
 119          * Print a timestamped debug message.
 120          *
 121          * @param string $msg The debug message.
 122          * @return void
 123          */
 124         function _debug($msg) {
 125                 if (defined('QUIET') && QUIET) {
 126                         return;
 127                 }
 128                 $ts = strftime("%H:%M:%S", time());
 129                 if (function_exists('posix_getpid')) {
 130                         $ts = "$ts/" . posix_getpid();
 131                 }
 132                 print "[$ts] $msg\n";
 133         } // function _debug
 134
 135         /**
 136          * Purge a feed old posts.
 137          *
 138          * @param mixed $link A database connection.
 139          * @param mixed $feed_id The id of the purged feed.
 140          * @param mixed $purge_interval Olderness of purged posts.
 141          * @param boolean $debug Set to True to enable the debug. False by default.
 142          * @access public
 143          * @return void
 144          */
 145         function purge_feed($link, $feed_id, $purge_interval, $debug = false) {
 146
 147                 if (!$purge_interval) $purge_interval = feed_purge_interval($link, $feed_id);
 148
 149                 $rows = -1;
 150
 151                 $result = db_query($link,
 152                         "SELECT owner_uid FROM ttrss_feeds WHERE id = '$feed_id'");
 153
 154                 $owner_uid = false;
 155
 156                 if (db_num_rows($result) == 1) {
 157                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 158                 }
 159
 160                 if ($purge_interval == -1 || !$purge_interval) {
 161                         if ($owner_uid) {
 162                                 ccache_update($link, $feed_id, $owner_uid);
 163                         }
 164                         return;
 165                 }
 166
 167                 if (!$owner_uid) return;
 168
 169                 if (FORCE_ARTICLE_PURGE == 0) {
 170                         $purge_unread = get_pref($link, "PURGE_UNREAD_ARTICLES",
 171                                 $owner_uid, false);
 172                 } else {
 173                         $purge_unread = true;
 174                         $purge_interval = FORCE_ARTICLE_PURGE;
 175                 }
 176
 177                 if (!$purge_unread) $query_limit = " unread = false AND ";
 178
 179                 if (DB_TYPE == "pgsql") {
 180                         $pg_version = get_pgsql_version($link);
 181
 182                         if (preg_match("/^7\./", $pg_version) || preg_match("/^8\.0/", $pg_version)) {
 183
 184                                 $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 185                                         ttrss_entries.id = ref_id AND
 186                                         marked = false AND
 187                                         feed_id = '$feed_id' AND
 188                                         $query_limit
 189                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 190
 191                         } else {
 192
 193                                 $result = db_query($link, "DELETE FROM ttrss_user_entries
 194                                         USING ttrss_entries
 195                                         WHERE ttrss_entries.id = ref_id AND
 196                                         marked = false AND
 197                                         feed_id = '$feed_id' AND
 198                                         $query_limit
 199                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 200                         }
 201
 202                         $rows = pg_affected_rows($result);
 203
 204                 } else {
 205
 206 /*                      $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 207                                 marked = false AND feed_id = '$feed_id' AND
 208                                 (SELECT date_updated FROM ttrss_entries WHERE
 209                                         id = ref_id) < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)"); */
 210
 211                         $result = db_query($link, "DELETE FROM ttrss_user_entries
 212                                 USING ttrss_user_entries, ttrss_entries
 213                                 WHERE ttrss_entries.id = ref_id AND
 214                                 marked = false AND
 215                                 feed_id = '$feed_id' AND
 216                                 $query_limit
 217                                 ttrss_entries.date_updated < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)");
 218
 219                         $rows = mysql_affected_rows($link);
 220
 221                 }
 222
 223                 ccache_update($link, $feed_id, $owner_uid);
 224
 225                 if ($debug) {
 226                         _debug("Purged feed $feed_id ($purge_interval): deleted $rows articles");
 227                 }
 228
 229                 return $rows;
 230         } // function purge_feed
 231
 232         function feed_purge_interval($link, $feed_id) {
 233
 234                 $result = db_query($link, "SELECT purge_interval, owner_uid FROM ttrss_feeds
 235                         WHERE id = '$feed_id'");
 236
 237                 if (db_num_rows($result) == 1) {
 238                         $purge_interval = db_fetch_result($result, 0, "purge_interval");
 239                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 240
 241                         if ($purge_interval == 0) $purge_interval = get_pref($link,
 242                                 'PURGE_OLD_DAYS', $owner_uid);
 243
 244                         return $purge_interval;
 245
 246                 } else {
 247                         return -1;
 248                 }
 249         }
 250
 251         function purge_orphans($link, $do_output = false) {
 252
 253                 // purge orphaned posts in main content table
 254                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
 255                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
 256
 257                 if ($do_output) {
 258                         $rows = db_affected_rows($link, $result);
 259                         _debug("Purged $rows orphaned posts.");
 260                 }
 261         }
 262
 263         function get_feed_update_interval($link, $feed_id) {
 264                 $result = db_query($link, "SELECT owner_uid, update_interval FROM
 265                         ttrss_feeds WHERE id = '$feed_id'");
 266
 267                 if (db_num_rows($result) == 1) {
 268                         $update_interval = db_fetch_result($result, 0, "update_interval");
 269                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 270
 271                         if ($update_interval != 0) {
 272                                 return $update_interval;
 273                         } else {
 274                                 return get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $owner_uid, false);
 275                         }
 276
 277                 } else {
 278                         return -1;
 279                 }
 280         }
 281
 282         function fetch_file_contents($url, $type = false, $login = false, $pass = false, $post_query = false, $timeout = false) {
 283                 $login = urlencode($login);
 284                 $pass = urlencode($pass);
 285
 286                 global $fetch_last_error;
 287
 288                 if (function_exists('curl_init') && !ini_get("open_basedir")) {
 289                         $ch = curl_init($url);
 290
 291                         curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout ? $timeout : 15);
 292                         curl_setopt($ch, CURLOPT_TIMEOUT, $timeout ? $timeout : 45);
 293                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
 294                         curl_setopt($ch, CURLOPT_MAXREDIRS, 20);
 295                         curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
 296                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 297                         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 298                         curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 299                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 300                         curl_setopt($ch, CURLOPT_ENCODING , "gzip");
 301                         curl_setopt($ch, CURLOPT_REFERER, $url);
 302
 303                         if ($post_query) {
 304                                 curl_setopt($ch, CURLOPT_POST, true);
 305                                 curl_setopt($ch, CURLOPT_POSTFIELDS, $post_query);
 306                         }
 307
 308                         if ($login && $pass)
 309                                 curl_setopt($ch, CURLOPT_USERPWD, "$login:$pass");
 310
 311                         $contents = @curl_exec($ch);
 312
 313                         if (curl_errno($ch) === 23 || curl_errno($ch) === 61) {
 314                                 curl_setopt($ch, CURLOPT_ENCODING, 'none');
 315                                 $contents = @curl_exec($ch);
 316                         }
 317
 318                         if ($contents === false) {
 319                                 $fetch_last_error = curl_errno($ch) . " " . curl_error($ch);
 320                                 curl_close($ch);
 321                                 return false;
 322                         }
 323
 324                         $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 325                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 326
 327                         if ($http_code != 200 || $type && strpos($content_type, "$type") === false) {
 328                                 if (curl_errno($ch) != 0) {
 329                                         $fetch_last_error = curl_errno($ch) . " " . curl_error($ch);
 330                                 } else {
 331                                         $fetch_last_error = "HTTP Code: $http_code";
 332                                 }
 333                                 curl_close($ch);
 334                                 return false;
 335                         }
 336
 337                         curl_close($ch);
 338
 339                         return $contents;
 340                 } else {
 341                         if ($login && $pass ){
 342                                 $url_parts = array();
 343
 344                                 preg_match("/(^[^:]*):\/\/(.*)/", $url, $url_parts);
 345
 346                                 if ($url_parts[1] && $url_parts[2]) {
 347                                         $url = $url_parts[1] . "://$login:$pass@" . $url_parts[2];
 348                                 }
 349                         }
 350
 351                         $data = @file_get_contents($url);
 352
 353                         if (!$data && function_exists('error_get_last')) {
 354                                 $error = error_get_last();
 355                                 $fetch_last_error = $error["message"];
 356                         }
 357                         return $data;
 358                 }
 359
 360         }
 361
 362         /**
 363          * Try to determine the favicon URL for a feed.
 364          * adapted from wordpress favicon plugin by Jeff Minard (http://thecodepro.com/)
 365          * http://dev.wp-plugins.org/file/favatars/trunk/favatars.php
 366          *
 367          * @param string $url A feed or page URL
 368          * @access public
 369          * @return mixed The favicon URL, or false if none was found.
 370          */
 371         function get_favicon_url($url) {
 372
 373                 $favicon_url = false;
 374
 375                 if ($html = @fetch_file_contents($url)) {
 376
 377                         libxml_use_internal_errors(true);
 378
 379                         $doc = new DOMDocument();
 380                         $doc->loadHTML($html);
 381                         $xpath = new DOMXPath($doc);
 382
 383                         $base = $xpath->query('/html/head/base');
 384                         foreach ($base as $b) {
 385                                 $url = $b->getAttribute("href");
 386                                 break;
 387                         }
 388
 389                         $entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon"]');
 390                         if (count($entries) > 0) {
 391                                 foreach ($entries as $entry) {
 392                                         $favicon_url = rewrite_relative_url($url, $entry->getAttribute("href"));
 393                                         break;
 394                                 }
 395                         }
 396                 }
 397
 398                 if (!$favicon_url)
 399                         $favicon_url = rewrite_relative_url($url, "/favicon.ico");
 400
 401                 return $favicon_url;
 402         } // function get_favicon_url
 403
 404         function check_feed_favicon($site_url, $feed, $link) {
 405 #               print "FAVICON [$site_url]: $favicon_url\n";
 406
 407                 $icon_file = ICONS_DIR . "/$feed.ico";
 408
 409                 if (!file_exists($icon_file)) {
 410                         $favicon_url = get_favicon_url($site_url);
 411
 412                         if ($favicon_url) {
 413                                 // Limiting to "image" type misses those served with text/plain
 414                                 $contents = fetch_file_contents($favicon_url); // , "image");
 415
 416                                 if ($contents) {
 417                                         // Crude image type matching.
 418                                         // Patterns gleaned from the file(1) source code.
 419                                         if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
 420                                                 // 0       string  \000\000\001\000        MS Windows icon resource
 421                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
 422                                         }
 423                                         elseif (preg_match('/^GIF8/', $contents)) {
 424                                                 // 0       string          GIF8            GIF image data
 425                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
 426                                         }
 427                                         elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
 428                                                 // 0       string          \x89PNG\x0d\x0a\x1a\x0a         PNG image data
 429                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
 430                                         }
 431                                         elseif (preg_match('/^\xff\xd8/', $contents)) {
 432                                                 // 0       beshort         0xffd8          JPEG image data
 433                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
 434                                         }
 435                                         else {
 436                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
 437                                                 $contents = "";
 438                                         }
 439                                 }
 440
 441                                 if ($contents) {
 442                                         $fp = @fopen($icon_file, "w");
 443
 444                                         if ($fp) {
 445                                                 fwrite($fp, $contents);
 446                                                 fclose($fp);
 447                                                 chmod($icon_file, 0644);
 448                                         }
 449                                 }
 450                         }
 451                 }
 452         }
 453
 454         function print_select($id, $default, $values, $attributes = "") {
 455                 print "<select name=\"$id\" id=\"$id\" $attributes>";
 456                 foreach ($values as $v) {
 457                         if ($v == $default)
 458                                 $sel = "selected=\"1\"";
 459                          else
 460                                 $sel = "";
 461
 462                         print "<option value=\"$v\" $sel>$v</option>";
 463                 }
 464                 print "</select>";
 465         }
 466
 467         function print_select_hash($id, $default, $values, $attributes = "") {
 468                 print "<select name=\"$id\" id='$id' $attributes>";
 469                 foreach (array_keys($values) as $v) {
 470                         if ($v == $default)
 471                                 $sel = 'selected="selected"';
 472                          else
 473                                 $sel = "";
 474
 475                         print "<option $sel value=\"$v\">".$values[$v]."</option>";
 476                 }
 477
 478                 print "</select>";
 479         }
 480
 481         function print_radio($id, $default, $true_is, $values, $attributes = "") {
 482                 foreach ($values as $v) {
 483
 484                         if ($v == $default)
 485                                 $sel = "checked";
 486                          else
 487                                 $sel = "";
 488
 489                         if ($v == $true_is) {
 490                                 $sel .= " value=\"1\"";
 491                         } else {
 492                                 $sel .= " value=\"0\"";
 493                         }
 494
 495                         print "<input class=\"noborder\" dojoType=\"dijit.form.RadioButton\"
 496                                 type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 497
 498                 }
 499         }
 500
 501         function initialize_user_prefs($link, $uid, $profile = false) {
 502
 503                 $uid = db_escape_string($uid);
 504
 505                 if (!$profile) {
 506                         $profile = "NULL";
 507                         $profile_qpart = "AND profile IS NULL";
 508                 } else {
 509                         $profile_qpart = "AND profile = '$profile'";
 510                 }
 511
 512                 if (get_schema_version($link) < 63) $profile_qpart = "";
 513
 514                 db_query($link, "BEGIN");
 515
 516                 $result = db_query($link, "SELECT pref_name,def_value FROM ttrss_prefs");
 517
 518                 $u_result = db_query($link, "SELECT pref_name
 519                         FROM ttrss_user_prefs WHERE owner_uid = '$uid' $profile_qpart");
 520
 521                 $active_prefs = array();
 522
 523                 while ($line = db_fetch_assoc($u_result)) {
 524                         array_push($active_prefs, $line["pref_name"]);
 525                 }
 526
 527                 while ($line = db_fetch_assoc($result)) {
 528                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 529 //                              print "adding " . $line["pref_name"] . "<br>";
 530
 531                                 if (get_schema_version($link) < 63) {
 532                                         db_query($link, "INSERT INTO ttrss_user_prefs
 533                                                 (owner_uid,pref_name,value) VALUES
 534                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 535
 536                                 } else {
 537                                         db_query($link, "INSERT INTO ttrss_user_prefs
 538                                                 (owner_uid,pref_name,value, profile) VALUES
 539                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."', $profile)");
 540                                 }
 541
 542                         }
 543                 }
 544
 545                 db_query($link, "COMMIT");
 546
 547         }
 548
 549         function get_ssl_certificate_id() {
 550                 if ($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"]) {
 551                         return sha1($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"] .
 552                                 $_SERVER["REDIRECT_SSL_CLIENT_V_START"] .
 553                                 $_SERVER["REDIRECT_SSL_CLIENT_V_END"] .
 554                                 $_SERVER["REDIRECT_SSL_CLIENT_S_DN"]);
 555                 }
 556                 return "";
 557         }
 558
 559         function authenticate_user($link, $login, $password, $check_only = false) {
 560
 561                 if (!SINGLE_USER_MODE) {
 562
 563                         $user_id = false;
 564
 565                         global $pluginhost;
 566                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_AUTH_USER) as $plugin) {
 567
 568                                 $user_id = (int) $plugin->authenticate($login, $password);
 569
 570                                 if ($user_id) {
 571                                         $_SESSION["auth_module"] = strtolower(get_class($plugin));
 572                                         break;
 573                                 }
 574                         }
 575
 576                         if ($user_id && !$check_only) {
 577                                 $_SESSION["uid"] = $user_id;
 578
 579                                 $result = db_query($link, "SELECT login,access_level,pwd_hash FROM ttrss_users
 580                                         WHERE id = '$user_id'");
 581
 582                                 $_SESSION["name"] = db_fetch_result($result, 0, "login");
 583                                 $_SESSION["access_level"] = db_fetch_result($result, 0, "access_level");
 584                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 585
 586                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 587                                         $_SESSION["uid"]);
 588
 589                                 $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 590                                 $_SESSION["pwd_hash"] = db_fetch_result($result, 0, "pwd_hash");
 591
 592                                 $_SESSION["last_version_check"] = time();
 593
 594                                 initialize_user_prefs($link, $_SESSION["uid"]);
 595
 596                                 return true;
 597                         }
 598
 599                         return false;
 600
 601                 } else {
 602
 603                         $_SESSION["uid"] = 1;
 604                         $_SESSION["name"] = "admin";
 605                         $_SESSION["access_level"] = 10;
 606
 607                         $_SESSION["hide_hello"] = true;
 608                         $_SESSION["hide_logout"] = true;
 609
 610                         $_SESSION["auth_module"] = false;
 611
 612                         if (!$_SESSION["csrf_token"]) {
 613                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 614                         }
 615
 616                         $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 617
 618                         initialize_user_prefs($link, $_SESSION["uid"]);
 619
 620                         return true;
 621                 }
 622         }
 623
 624         function make_password($length = 8) {
 625
 626                 $password = "";
 627                 $possible = "0123456789abcdfghjkmnpqrstvwxyzABCDFGHJKMNPQRSTVWXYZ";
 628
 629         $i = 0;
 630
 631                 while ($i < $length) {
 632                         $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 633
 634                         if (!strstr($password, $char)) {
 635                                 $password .= $char;
 636                                 $i++;
 637                         }
 638                 }
 639                 return $password;
 640         }
 641
 642         // this is called after user is created to initialize default feeds, labels
 643         // or whatever else
 644
 645         // user preferences are checked on every login, not here
 646
 647         function initialize_user($link, $uid) {
 648
 649                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 650                         values ('$uid', 'Tiny Tiny RSS: New Releases',
 651                         'http://tt-rss.org/releases.rss')");
 652
 653                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 654                         values ('$uid', 'Tiny Tiny RSS: Forum',
 655                                 'http://tt-rss.org/forum/rss.php')");
 656         }
 657
 658         function logout_user() {
 659                 session_destroy();
 660                 if (isset($_COOKIE[session_name()])) {
 661                    setcookie(session_name(), '', time()-42000, '/');
 662                 }
 663         }
 664
 665         function validate_csrf($csrf_token) {
 666                 return $csrf_token == $_SESSION['csrf_token'];
 667         }
 668
 669         function validate_session($link) {
 670                 if (SINGLE_USER_MODE) return true;
 671
 672                 $check_ip = $_SESSION['ip_address'];
 673
 674                 switch (SESSION_CHECK_ADDRESS) {
 675                 case 0:
 676                         $check_ip = '';
 677                         break;
 678                 case 1:
 679                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 680                         break;
 681                 case 2:
 682                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.'));
 683                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 684                         break;
 685                 };
 686
 687                 if ($check_ip && strpos($_SERVER['REMOTE_ADDR'], $check_ip) !== 0) {
 688                         $_SESSION["login_error_msg"] =
 689                                 __("Session failed to validate (incorrect IP)");
 690                         return false;
 691                 }
 692
 693                 if ($_SESSION["ref_schema_version"] != get_schema_version($link, true))
 694                         return false;
 695
 696                 if ($_SESSION["uid"]) {
 697
 698                         $result = db_query($link,
 699                                 "SELECT pwd_hash FROM ttrss_users WHERE id = '".$_SESSION["uid"]."'");
 700
 701                         $pwd_hash = db_fetch_result($result, 0, "pwd_hash");
 702
 703                         if ($pwd_hash != $_SESSION["pwd_hash"]) {
 704                                 return false;
 705                         }
 706                 }
 707
 708 /*              if ($_SESSION["cookie_lifetime"] && $_SESSION["uid"]) {
 709
 710                         //print_r($_SESSION);
 711
 712                         if (time() > $_SESSION["cookie_lifetime"]) {
 713                                 return false;
 714                         }
 715                 } */
 716
 717                 return true;
 718         }
 719
 720         function load_user_plugins($link, $owner_uid) {
 721                 if ($owner_uid) {
 722                         $plugins = get_pref($link, "_ENABLED_PLUGINS", $owner_uid);
 723
 724                         global $pluginhost;
 725                         $pluginhost->load($plugins, $pluginhost::KIND_USER, $owner_uid);
 726
 727                         if (get_schema_version($link) > 100) {
 728                                 $pluginhost->load_data();
 729                         }
 730                 }
 731         }
 732
 733         function login_sequence($link, $login_form = 0) {
 734                 $_SESSION["prefs_cache"] = false;
 735
 736                 if (SINGLE_USER_MODE) {
 737                         authenticate_user($link, "admin", null);
 738                         cache_prefs($link);
 739                         load_user_plugins($link, $_SESSION["uid"]);
 740                 } else {
 741                         if (!$_SESSION["uid"] || !validate_session($link)) {
 742
 743                                 if (AUTH_AUTO_LOGIN && authenticate_user($link, null, null)) {
 744                                     $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 745                                 } else {
 746                                          authenticate_user($link, null, null, true);
 747                                 }
 748
 749                                 if (!$_SESSION["uid"]) render_login_form($link, $login_form);
 750
 751                         } else {
 752                                 /* bump login timestamp */
 753                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 754                                         $_SESSION["uid"]);
 755                         }
 756
 757                         if ($_SESSION["uid"] && $_SESSION["language"] && SESSION_COOKIE_LIFETIME > 0) {
 758                                 setcookie("ttrss_lang", $_SESSION["language"],
 759                                         time() + SESSION_COOKIE_LIFETIME);
 760                         }
 761
 762                         if ($_SESSION["uid"]) {
 763                                 cache_prefs($link);
 764                                 load_user_plugins($link, $_SESSION["uid"]);
 765                         }
 766                 }
 767         }
 768
 769         function truncate_string($str, $max_len, $suffix = '&hellip;') {
 770                 if (mb_strlen($str, "utf-8") > $max_len - 3) {
 771                         return mb_substr($str, 0, $max_len, "utf-8") . $suffix;
 772                 } else {
 773                         return $str;
 774                 }
 775         }
 776
 777         // Deprecated, TODO: remove
 778         function theme_image($link, $filename) {
 779                 return $filename;
 780         }
 781
 782         function convert_timestamp($timestamp, $source_tz, $dest_tz) {
 783
 784                 try {
 785                         $source_tz = new DateTimeZone($source_tz);
 786                 } catch (Exception $e) {
 787                         $source_tz = new DateTimeZone('UTC');
 788                 }
 789
 790                 try {
 791                         $dest_tz = new DateTimeZone($dest_tz);
 792                 } catch (Exception $e) {
 793                         $dest_tz = new DateTimeZone('UTC');
 794                 }
 795
 796                 $dt = new DateTime(date('Y-m-d H:i:s', $timestamp), $source_tz);
 797                 return $dt->format('U') + $dest_tz->getOffset($dt);
 798         }
 799
 800         function make_local_datetime($link, $timestamp, $long, $owner_uid = false,
 801                                         $no_smart_dt = false) {
 802
 803                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 804                 if (!$timestamp) $timestamp = '1970-01-01 0:00';
 805
 806                 global $utc_tz;
 807                 global $tz_offset;
 808
 809                 # We store date in UTC internally
 810                 $dt = new DateTime($timestamp, $utc_tz);
 811
 812                 if ($tz_offset == -1) {
 813
 814                         $user_tz_string = get_pref($link, 'USER_TIMEZONE', $owner_uid);
 815
 816                         try {
 817                                 $user_tz = new DateTimeZone($user_tz_string);
 818                         } catch (Exception $e) {
 819                                 $user_tz = $utc_tz;
 820                         }
 821
 822                         $tz_offset = $user_tz->getOffset($dt);
 823                 }
 824
 825                 $user_timestamp = $dt->format('U') + $tz_offset;
 826
 827                 if (!$no_smart_dt) {
 828                         return smart_date_time($link, $user_timestamp,
 829                                 $tz_offset, $owner_uid);
 830                 } else {
 831                         if ($long)
 832                                 $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 833                         else
 834                                 $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 835
 836                         return date($format, $user_timestamp);
 837                 }
 838         }
 839
 840         function smart_date_time($link, $timestamp, $tz_offset = 0, $owner_uid = false) {
 841                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 842
 843                 if (date("Y.m.d", $timestamp) == date("Y.m.d", time() + $tz_offset)) {
 844                         return date("G:i", $timestamp);
 845                 } else if (date("Y", $timestamp) == date("Y", time() + $tz_offset)) {
 846                         $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 847                         return date($format, $timestamp);
 848                 } else {
 849                         $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 850                         return date($format, $timestamp);
 851                 }
 852         }
 853
 854         function sql_bool_to_bool($s) {
 855                 if ($s == "t" || $s == "1" || $s == "true") {
 856                         return true;
 857                 } else {
 858                         return false;
 859                 }
 860         }
 861
 862         function bool_to_sql_bool($s) {
 863                 if ($s) {
 864                         return "true";
 865                 } else {
 866                         return "false";
 867                 }
 868         }
 869
 870         // Session caching removed due to causing wrong redirects to upgrade
 871         // script when get_schema_version() is called on an obsolete session
 872         // created on a previous schema version.
 873         function get_schema_version($link, $nocache = false) {
 874                 global $schema_version;
 875
 876                 if (!$schema_version) {
 877                         $result = db_query($link, "SELECT schema_version FROM ttrss_version");
 878                         $version = db_fetch_result($result, 0, "schema_version");
 879                         $schema_version = $version;
 880                         return $version;
 881                 } else {
 882                         return $schema_version;
 883                 }
 884         }
 885
 886         function sanity_check($link) {
 887                 require_once 'errors.php';
 888
 889                 $error_code = 0;
 890                 $schema_version = get_schema_version($link, true);
 891
 892                 if ($schema_version != SCHEMA_VERSION) {
 893                         $error_code = 5;
 894                 }
 895
 896                 if (DB_TYPE == "mysql") {
 897                         $result = db_query($link, "SELECT true", false);
 898                         if (db_num_rows($result) != 1) {
 899                                 $error_code = 10;
 900                         }
 901                 }
 902
 903                 if (db_escape_string("testTEST") != "testTEST") {
 904                         $error_code = 12;
 905                 }
 906
 907                 return array("code" => $error_code, "message" => $ERRORS[$error_code]);
 908         }
 909
 910         function file_is_locked($filename) {
 911                 if (function_exists('flock')) {
 912                         $fp = @fopen(LOCK_DIRECTORY . "/$filename", "r");
 913                         if ($fp) {
 914                                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 915                                         flock($fp, LOCK_UN);
 916                                         fclose($fp);
 917                                         return false;
 918                                 }
 919                                 fclose($fp);
 920                                 return true;
 921                         } else {
 922                                 return false;
 923                         }
 924                 }
 925                 return true; // consider the file always locked and skip the test
 926         }
 927
 928         function make_lockfile($filename) {
 929                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
 930
 931                 if ($fp && flock($fp, LOCK_EX | LOCK_NB)) {
 932                         if (function_exists('posix_getpid')) {
 933                                 fwrite($fp, posix_getpid() . "\n");
 934                         }
 935                         return $fp;
 936                 } else {
 937                         return false;
 938                 }
 939         }
 940
 941         function make_stampfile($filename) {
 942                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
 943
 944                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 945                         fwrite($fp, time() . "\n");
 946                         flock($fp, LOCK_UN);
 947                         fclose($fp);
 948                         return true;
 949                 } else {
 950                         return false;
 951                 }
 952         }
 953
 954         function sql_random_function() {
 955                 if (DB_TYPE == "mysql") {
 956                         return "RAND()";
 957                 } else {
 958                         return "RANDOM()";
 959                 }
 960         }
 961
 962         function catchup_feed($link, $feed, $cat_view, $owner_uid = false, $max_id = false) {
 963
 964                         if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 965
 966                         //if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
 967
 968                         $ref_check_qpart = ($max_id &&
 969                                 !get_pref($link, 'REVERSE_HEADLINES')) ? "ref_id <= '$max_id'" : "true";
 970
 971                         if (is_numeric($feed)) {
 972                                 if ($cat_view) {
 973
 974                                         if ($feed >= 0) {
 975
 976                                                 if ($feed > 0) {
 977                                                         $children = getChildCategories($link, $feed, $owner_uid);
 978                                                         array_push($children, $feed);
 979
 980                                                         $children = join(",", $children);
 981
 982                                                         $cat_qpart = "cat_id IN ($children)";
 983                                                 } else {
 984                                                         $cat_qpart = "cat_id IS NULL";
 985                                                 }
 986
 987                                                 db_query($link, "UPDATE ttrss_user_entries
 988                                                         SET unread = false,last_read = NOW()
 989                                                         WHERE feed_id IN (SELECT id FROM ttrss_feeds WHERE $cat_qpart)
 990                                                         AND $ref_check_qpart AND unread = true
 991                                                         AND owner_uid = $owner_uid");
 992
 993                                         } else if ($feed == -2) {
 994
 995                                                 db_query($link, "UPDATE ttrss_user_entries
 996                                                         SET unread = false,last_read = NOW() WHERE (SELECT COUNT(*)
 997                                                                 FROM ttrss_user_labels2 WHERE article_id = ref_id) > 0
 998                                                                 AND $ref_check_qpart
 999                                                                 AND unread = true AND owner_uid = $owner_uid");
1000                                         }
1001
1002                                 } else if ($feed > 0) {
1003
1004                                         db_query($link, "UPDATE ttrss_user_entries
1005                                                         SET unread = false,last_read = NOW()
1006                                                         WHERE feed_id = '$feed'
1007                                                         AND $ref_check_qpart AND unread = true
1008                                                         AND owner_uid = $owner_uid");
1009
1010                                 } else if ($feed < 0 && $feed > -10) { // special, like starred
1011
1012                                         if ($feed == -1) {
1013                                                 db_query($link, "UPDATE ttrss_user_entries
1014                                                         SET unread = false,last_read = NOW()
1015                                                         WHERE marked = true
1016                                                         AND $ref_check_qpart AND unread = true
1017                                                         AND owner_uid = $owner_uid");
1018                                         }
1019
1020                                         if ($feed == -2) {
1021                                                 db_query($link, "UPDATE ttrss_user_entries
1022                                                         SET unread = false,last_read = NOW()
1023                                                         WHERE published = true
1024                                                         AND $ref_check_qpart AND unread = true
1025                                                         AND owner_uid = $owner_uid");
1026                                         }
1027
1028                                         if ($feed == -3) {
1029
1030                                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE");
1031
1032                                                 if (DB_TYPE == "pgsql") {
1033                                                         $match_part = "updated > NOW() - INTERVAL '$intl hour' ";
1034                                                 } else {
1035                                                         $match_part = "updated > DATE_SUB(NOW(),
1036                                                                 INTERVAL $intl HOUR) ";
1037                                                 }
1038
1039                                                 $result = db_query($link, "SELECT id FROM ttrss_entries,
1040                                                         ttrss_user_entries WHERE $match_part AND
1041                                                         unread = true AND
1042                                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
1043                                                         owner_uid = $owner_uid");
1044
1045                                                 $affected_ids = array();
1046
1047                                                 while ($line = db_fetch_assoc($result)) {
1048                                                         array_push($affected_ids, $line["id"]);
1049                                                 }
1050
1051                                                 catchupArticlesById($link, $affected_ids, 0);
1052                                         }
1053
1054                                         if ($feed == -4) {
1055                                                 db_query($link, "UPDATE ttrss_user_entries
1056                                                         SET unread = false,last_read = NOW()
1057                                                         WHERE $ref_check_qpart AND unread = true AND
1058                                                         owner_uid = $owner_uid");
1059                                         }
1060
1061                                 } else if ($feed < -10) { // label
1062
1063                                         $label_id = -$feed - 11;
1064
1065                                         db_query($link, "UPDATE ttrss_user_entries, ttrss_user_labels2
1066                                                 SET unread = false, last_read = NOW()
1067                                                         WHERE label_id = '$label_id' AND unread = true
1068                                                         AND $ref_check_qpart
1069                                                         AND owner_uid = '$owner_uid' AND ref_id = article_id");
1070
1071                                 }
1072
1073                                 ccache_update($link, $feed, $owner_uid, $cat_view);
1074
1075                         } else { // tag
1076                                 db_query($link, "BEGIN");
1077
1078                                 $tag_name = db_escape_string($feed);
1079
1080                                 $result = db_query($link, "SELECT post_int_id FROM ttrss_tags
1081                                         WHERE tag_name = '$tag_name' AND owner_uid = $owner_uid");
1082
1083                                 while ($line = db_fetch_assoc($result)) {
1084                                         db_query($link, "UPDATE ttrss_user_entries SET
1085                                                 unread = false, last_read = NOW()
1086                                                 WHERE $ref_check_qpart AND unread = true
1087                                                 AND int_id = " . $line["post_int_id"]);
1088                                 }
1089                                 db_query($link, "COMMIT");
1090                         }
1091         }
1092
1093         function getAllCounters($link) {
1094                 $data = getGlobalCounters($link);
1095
1096                 $data = array_merge($data, getVirtCounters($link));
1097                 $data = array_merge($data, getLabelCounters($link));
1098                 $data = array_merge($data, getFeedCounters($link, $active_feed));
1099                 $data = array_merge($data, getCategoryCounters($link));
1100
1101                 return $data;
1102         }
1103
1104         function getCategoryTitle($link, $cat_id) {
1105
1106                 if ($cat_id == -1) {
1107                         return __("Special");
1108                 } else if ($cat_id == -2) {
1109                         return __("Labels");
1110                 } else {
1111
1112                         $result = db_query($link, "SELECT title FROM ttrss_feed_categories WHERE
1113                                 id = '$cat_id'");
1114
1115                         if (db_num_rows($result) == 1) {
1116                                 return db_fetch_result($result, 0, "title");
1117                         } else {
1118                                 return __("Uncategorized");
1119                         }
1120                 }
1121         }
1122
1123
1124         function getCategoryCounters($link) {
1125                 $ret_arr = array();
1126
1127                 /* Labels category */
1128
1129                 $cv = array("id" => -2, "kind" => "cat",
1130                         "counter" => getCategoryUnread($link, -2));
1131
1132                 array_push($ret_arr, $cv);
1133
1134                 $result = db_query($link, "SELECT id AS cat_id, value AS unread,
1135                         (SELECT COUNT(id) FROM ttrss_feed_categories AS c2
1136                                 WHERE c2.parent_cat = ttrss_feed_categories.id) AS num_children
1137                         FROM ttrss_feed_categories, ttrss_cat_counters_cache
1138                         WHERE ttrss_cat_counters_cache.feed_id = id AND
1139                         ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid AND
1140                         ttrss_feed_categories.owner_uid = " . $_SESSION["uid"]);
1141
1142                 while ($line = db_fetch_assoc($result)) {
1143                         $line["cat_id"] = (int) $line["cat_id"];
1144
1145                         if ($line["num_children"] > 0) {
1146                                 $child_counter = getCategoryChildrenUnread($link, $line["cat_id"], $_SESSION["uid"]);
1147                         } else {
1148                                 $child_counter = 0;
1149                         }
1150
1151                         $cv = array("id" => $line["cat_id"], "kind" => "cat",
1152                                 "counter" => $line["unread"] + $child_counter);
1153
1154                         array_push($ret_arr, $cv);
1155                 }
1156
1157                 /* Special case: NULL category doesn't actually exist in the DB */
1158
1159                 $cv = array("id" => 0, "kind" => "cat",
1160                         "counter" => (int) ccache_find($link, 0, $_SESSION["uid"], true));
1161
1162                 array_push($ret_arr, $cv);
1163
1164                 return $ret_arr;
1165         }
1166
1167         // only accepts real cats (>= 0)
1168         function getCategoryChildrenUnread($link, $cat, $owner_uid = false) {
1169                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1170
1171                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories WHERE parent_cat = '$cat'
1172                                 AND owner_uid = $owner_uid");
1173
1174                 $unread = 0;
1175
1176                 while ($line = db_fetch_assoc($result)) {
1177                         $unread += getCategoryUnread($link, $line["id"], $owner_uid);
1178                         $unread += getCategoryChildrenUnread($link, $line["id"], $owner_uid);
1179                 }
1180
1181                 return $unread;
1182         }
1183
1184         function getCategoryUnread($link, $cat, $owner_uid = false) {
1185
1186                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1187
1188                 if ($cat >= 0) {
1189
1190                         if ($cat != 0) {
1191                                 $cat_query = "cat_id = '$cat'";
1192                         } else {
1193                                 $cat_query = "cat_id IS NULL";
1194                         }
1195
1196                         $result = db_query($link, "SELECT id FROM ttrss_feeds WHERE $cat_query
1197                                         AND owner_uid = " . $owner_uid);
1198
1199                         $cat_feeds = array();
1200                         while ($line = db_fetch_assoc($result)) {
1201                                 array_push($cat_feeds, "feed_id = " . $line["id"]);
1202                         }
1203
1204                         if (count($cat_feeds) == 0) return 0;
1205
1206                         $match_part = implode(" OR ", $cat_feeds);
1207
1208                         $result = db_query($link, "SELECT COUNT(int_id) AS unread
1209                                 FROM ttrss_user_entries
1210                                 WHERE   unread = true AND ($match_part)
1211                                 AND owner_uid = " . $owner_uid);
1212
1213                         $unread = 0;
1214
1215                         # this needs to be rewritten
1216                         while ($line = db_fetch_assoc($result)) {
1217                                 $unread += $line["unread"];
1218                         }
1219
1220                         return $unread;
1221                 } else if ($cat == -1) {
1222                         return getFeedUnread($link, -1) + getFeedUnread($link, -2) + getFeedUnread($link, -3) + getFeedUnread($link, 0);
1223                 } else if ($cat == -2) {
1224
1225                         $result = db_query($link, "
1226                                 SELECT COUNT(unread) AS unread FROM
1227                                         ttrss_user_entries, ttrss_user_labels2
1228                                 WHERE article_id = ref_id AND unread = true
1229                                         AND ttrss_user_entries.owner_uid = '$owner_uid'");
1230
1231                         $unread = db_fetch_result($result, 0, "unread");
1232
1233                         return $unread;
1234
1235                 }
1236         }
1237
1238         function getFeedUnread($link, $feed, $is_cat = false) {
1239                 return getFeedArticles($link, $feed, $is_cat, true, $_SESSION["uid"]);
1240         }
1241
1242         function getLabelUnread($link, $label_id, $owner_uid = false) {
1243                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1244
1245                 $result = db_query($link, "SELECT COUNT(ref_id) AS unread FROM ttrss_user_entries, ttrss_user_labels2
1246                         WHERE owner_uid = '$owner_uid' AND unread = true AND label_id = '$label_id' AND article_id = ref_id");
1247
1248                 if (db_num_rows($result) != 0) {
1249                         return db_fetch_result($result, 0, "unread");
1250                 } else {
1251                         return 0;
1252                 }
1253         }
1254
1255         function getFeedArticles($link, $feed, $is_cat = false, $unread_only = false,
1256                 $owner_uid = false) {
1257
1258                 $n_feed = (int) $feed;
1259                 $need_entries = false;
1260
1261                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1262
1263                 if ($unread_only) {
1264                         $unread_qpart = "unread = true";
1265                 } else {
1266                         $unread_qpart = "true";
1267                 }
1268
1269                 if ($is_cat) {
1270                         return getCategoryUnread($link, $n_feed, $owner_uid);
1271                 } else if ($n_feed == -6) {
1272                         return 0;
1273                 } else if ($feed != "0" && $n_feed == 0) {
1274
1275                         $feed = db_escape_string($feed);
1276
1277                         $result = db_query($link, "SELECT SUM((SELECT COUNT(int_id)
1278                                 FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1279                                         AND ref_id = id AND $unread_qpart)) AS count FROM ttrss_tags
1280                                 WHERE owner_uid = $owner_uid AND tag_name = '$feed'");
1281                         return db_fetch_result($result, 0, "count");
1282
1283                 } else if ($n_feed == -1) {
1284                         $match_part = "marked = true";
1285                 } else if ($n_feed == -2) {
1286                         $match_part = "published = true";
1287                 } else if ($n_feed == -3) {
1288                         $match_part = "unread = true AND score >= 0";
1289
1290                         $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
1291
1292                         if (DB_TYPE == "pgsql") {
1293                                 $match_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
1294                         } else {
1295                                 $match_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
1296                         }
1297
1298                         $need_entries = true;
1299
1300                 } else if ($n_feed == -4) {
1301                         $match_part = "true";
1302                 } else if ($n_feed >= 0) {
1303
1304                         if ($n_feed != 0) {
1305                                 $match_part = "feed_id = '$n_feed'";
1306                         } else {
1307                                 $match_part = "feed_id IS NULL";
1308                         }
1309
1310                 } else if ($feed < -10) {
1311
1312                         $label_id = -$feed - 11;
1313
1314                         return getLabelUnread($link, $label_id, $owner_uid);
1315
1316                 }
1317
1318                 if ($match_part) {
1319
1320                         if ($need_entries) {
1321                                 $from_qpart = "ttrss_user_entries,ttrss_entries";
1322                                 $from_where = "ttrss_entries.id = ttrss_user_entries.ref_id AND";
1323                         } else {
1324                                 $from_qpart = "ttrss_user_entries";
1325                         }
1326
1327                         $query = "SELECT count(int_id) AS unread
1328                                 FROM $from_qpart WHERE
1329                                 $unread_qpart AND $from_where ($match_part) AND ttrss_user_entries.owner_uid = $owner_uid";
1330
1331                         //echo "[$feed/$query]\n";
1332
1333                         $result = db_query($link, $query);
1334
1335                 } else {
1336
1337                         $result = db_query($link, "SELECT COUNT(post_int_id) AS unread
1338                                 FROM ttrss_tags,ttrss_user_entries,ttrss_entries
1339                                 WHERE tag_name = '$feed' AND post_int_id = int_id AND ref_id = ttrss_entries.id
1340                                 AND $unread_qpart AND ttrss_tags.owner_uid = " . $owner_uid);
1341                 }
1342
1343                 $unread = db_fetch_result($result, 0, "unread");
1344
1345                 return $unread;
1346         }
1347
1348         function getGlobalUnread($link, $user_id = false) {
1349
1350                 if (!$user_id) {
1351                         $user_id = $_SESSION["uid"];
1352                 }
1353
1354                 $result = db_query($link, "SELECT SUM(value) AS c_id FROM ttrss_counters_cache
1355                         WHERE owner_uid = '$user_id' AND feed_id > 0");
1356
1357                 $c_id = db_fetch_result($result, 0, "c_id");
1358
1359                 return $c_id;
1360         }
1361
1362         function getGlobalCounters($link, $global_unread = -1) {
1363                 $ret_arr = array();
1364
1365                 if ($global_unread == -1) {
1366                         $global_unread = getGlobalUnread($link);
1367                 }
1368
1369                 $cv = array("id" => "global-unread",
1370                         "counter" => (int) $global_unread);
1371
1372                 array_push($ret_arr, $cv);
1373
1374                 $result = db_query($link, "SELECT COUNT(id) AS fn FROM
1375                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1376
1377                 $subscribed_feeds = db_fetch_result($result, 0, "fn");
1378
1379                 $cv = array("id" => "subscribed-feeds",
1380                         "counter" => (int) $subscribed_feeds);
1381
1382                 array_push($ret_arr, $cv);
1383
1384                 return $ret_arr;
1385         }
1386
1387         function getVirtCounters($link) {
1388
1389                 $ret_arr = array();
1390
1391                 for ($i = 0; $i >= -4; $i--) {
1392
1393                         $count = getFeedUnread($link, $i);
1394
1395                         $cv = array("id" => $i,
1396                                 "counter" => (int) $count);
1397
1398 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1399 //                              $cv["xmsg"] = getFeedArticles($link, $i)." ".__("total");
1400
1401                         array_push($ret_arr, $cv);
1402                 }
1403
1404                 return $ret_arr;
1405         }
1406
1407         function getLabelCounters($link, $descriptions = false) {
1408
1409                 $ret_arr = array();
1410
1411                 $owner_uid = $_SESSION["uid"];
1412
1413                 $result = db_query($link, "SELECT id,caption,COUNT(unread) AS unread
1414                         FROM ttrss_labels2 LEFT JOIN ttrss_user_labels2 ON
1415                                 (ttrss_labels2.id = label_id)
1416                                         LEFT JOIN ttrss_user_entries ON (ref_id = article_id AND unread = true)
1417                                 WHERE ttrss_labels2.owner_uid = $owner_uid GROUP BY ttrss_labels2.id,
1418                                         ttrss_labels2.caption");
1419
1420                 while ($line = db_fetch_assoc($result)) {
1421
1422                         $id = -$line["id"] - 11;
1423
1424                         $label_name = $line["caption"];
1425                         $count = $line["unread"];
1426
1427                         $cv = array("id" => $id,
1428                                 "counter" => (int) $count);
1429
1430                         if ($descriptions)
1431                                 $cv["description"] = $label_name;
1432
1433 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1434 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1435
1436                         array_push($ret_arr, $cv);
1437                 }
1438
1439                 return $ret_arr;
1440         }
1441
1442         function getFeedCounters($link, $active_feed = false) {
1443
1444                 $ret_arr = array();
1445
1446                 $query = "SELECT ttrss_feeds.id,
1447                                 ttrss_feeds.title,
1448                                 ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
1449                                 last_error, value AS count
1450                         FROM ttrss_feeds, ttrss_counters_cache
1451                         WHERE ttrss_feeds.owner_uid = ".$_SESSION["uid"]."
1452                                 AND ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid
1453                                 AND ttrss_counters_cache.feed_id = id";
1454
1455                 $result = db_query($link, $query);
1456                 $fctrs_modified = false;
1457
1458                 while ($line = db_fetch_assoc($result)) {
1459
1460                         $id = $line["id"];
1461                         $count = $line["count"];
1462                         $last_error = htmlspecialchars($line["last_error"]);
1463
1464                         $last_updated = make_local_datetime($link, $line['last_updated'], false);
1465
1466                         $has_img = feed_has_icon($id);
1467
1468                         if (date('Y') - date('Y', strtotime($line['last_updated'])) > 2)
1469                                 $last_updated = '';
1470
1471                         $cv = array("id" => $id,
1472                                 "updated" => $last_updated,
1473                                 "counter" => (int) $count,
1474                                 "has_img" => (int) $has_img);
1475
1476                         if ($last_error)
1477                                 $cv["error"] = $last_error;
1478
1479 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1480 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1481
1482                         if ($active_feed && $id == $active_feed)
1483                                 $cv["title"] = truncate_string($line["title"], 30);
1484
1485                         array_push($ret_arr, $cv);
1486
1487                 }
1488
1489                 return $ret_arr;
1490         }
1491
1492         function get_pgsql_version($link) {
1493                 $result = db_query($link, "SELECT version() AS version");
1494                 $version = explode(" ", db_fetch_result($result, 0, "version"));
1495                 return $version[1];
1496         }
1497
1498         /**
1499          * @return array (code => Status code, message => error message if available)
1500          *
1501          *                 0 - OK, Feed already exists
1502          *                 1 - OK, Feed added
1503          *                 2 - Invalid URL
1504          *                 3 - URL content is HTML, no feeds available
1505          *                 4 - URL content is HTML which contains multiple feeds.
1506          *                     Here you should call extractfeedurls in rpc-backend
1507          *                     to get all possible feeds.
1508          *                 5 - Couldn't download the URL content.
1509          */
1510         function subscribe_to_feed($link, $url, $cat_id = 0,
1511                         $auth_login = '', $auth_pass = '', $need_auth = false) {
1512
1513                 global $fetch_last_error;
1514
1515                 require_once "include/rssfuncs.php";
1516
1517                 $url = fix_url($url);
1518
1519                 if (!$url || !validate_feed_url($url)) return array("code" => 2);
1520
1521                 $contents = @fetch_file_contents($url, false, $auth_login, $auth_pass);
1522
1523                 if (!$contents) {
1524                         return array("code" => 5, "message" => $fetch_last_error);
1525                 }
1526
1527                 if (is_html($contents)) {
1528                         $feedUrls = get_feeds_from_html($url, $contents);
1529
1530                         if (count($feedUrls) == 0) {
1531                                 return array("code" => 3);
1532                         } else if (count($feedUrls) > 1) {
1533                                 return array("code" => 4, "feeds" => $feedUrls);
1534                         }
1535                         //use feed url as new URL
1536                         $url = key($feedUrls);
1537                 }
1538
1539                 if ($cat_id == "0" || !$cat_id) {
1540                         $cat_qpart = "NULL";
1541                 } else {
1542                         $cat_qpart = "'$cat_id'";
1543                 }
1544
1545                 $result = db_query($link,
1546                         "SELECT id FROM ttrss_feeds
1547                         WHERE feed_url = '$url' AND owner_uid = ".$_SESSION["uid"]);
1548
1549                 if (db_num_rows($result) == 0) {
1550                         $result = db_query($link,
1551                                 "INSERT INTO ttrss_feeds
1552                                         (owner_uid,feed_url,title,cat_id, auth_login,auth_pass,update_method)
1553                                 VALUES ('".$_SESSION["uid"]."', '$url',
1554                                 '[Unknown]', $cat_qpart, '$auth_login', '$auth_pass', 0)");
1555
1556                         $result = db_query($link,
1557                                 "SELECT id FROM ttrss_feeds WHERE feed_url = '$url'
1558                                         AND owner_uid = " . $_SESSION["uid"]);
1559
1560                         $feed_id = db_fetch_result($result, 0, "id");
1561
1562                         if ($feed_id) {
1563                                 update_rss_feed($link, $feed_id, true);
1564                         }
1565
1566                         return array("code" => 1);
1567                 } else {
1568                         return array("code" => 0);
1569                 }
1570         }
1571
1572         function print_feed_select($link, $id, $default_id = "",
1573                 $attributes = "", $include_all_feeds = true,
1574                 $root_id = false, $nest_level = 0) {
1575
1576                 if (!$root_id) {
1577                         print "<select id=\"$id\" name=\"$id\" $attributes>";
1578                         if ($include_all_feeds) {
1579                                 $is_selected = ("0" == $default_id) ? "selected=\"1\"" : "";
1580                                 print "<option $is_selected value=\"0\">".__('All feeds')."</option>";
1581                         }
1582                 }
1583
1584                 if (get_pref($link, 'ENABLE_FEED_CATS')) {
1585
1586                         if ($root_id)
1587                                 $parent_qpart = "parent_cat = '$root_id'";
1588                         else
1589                                 $parent_qpart = "parent_cat IS NULL";
1590
1591                         $result = db_query($link, "SELECT id,title,
1592                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1593                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1594                                 FROM ttrss_feed_categories
1595                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1596
1597                         while ($line = db_fetch_assoc($result)) {
1598
1599                                 for ($i = 0; $i < $nest_level; $i++)
1600                                         $line["title"] = " - " . $line["title"];
1601
1602                                 $is_selected = ("CAT:".$line["id"] == $default_id) ? "selected=\"1\"" : "";
1603
1604                                 printf("<option $is_selected value='CAT:%d'>%s</option>",
1605                                         $line["id"], htmlspecialchars($line["title"]));
1606
1607                                 if ($line["num_children"] > 0)
1608                                         print_feed_select($link, $id, $default_id, $attributes,
1609                                                 $include_all_feeds, $line["id"], $nest_level+1);
1610
1611                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1612                                         WHERE cat_id = '".$line["id"]."' AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1613
1614                                 while ($fline = db_fetch_assoc($feed_result)) {
1615                                         $is_selected = ($fline["id"] == $default_id) ? "selected=\"1\"" : "";
1616
1617                                         $fline["title"] = " + " . $fline["title"];
1618
1619                                         for ($i = 0; $i < $nest_level; $i++)
1620                                                 $fline["title"] = " - " . $fline["title"];
1621
1622                                         printf("<option $is_selected value='%d'>%s</option>",
1623                                                 $fline["id"], htmlspecialchars($fline["title"]));
1624                                 }
1625                         }
1626
1627                         if (!$root_id) {
1628                                 $is_selected = ($default_id == "CAT:0") ? "selected=\"1\"" : "";
1629
1630                                 printf("<option $is_selected value='CAT:0'>%s</option>",
1631                                         __("Uncategorized"));
1632
1633                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1634                                         WHERE cat_id IS NULL AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1635
1636                                 while ($fline = db_fetch_assoc($feed_result)) {
1637                                         $is_selected = ($fline["id"] == $default_id && !$default_is_cat) ? "selected=\"1\"" : "";
1638
1639                                         $fline["title"] = " + " . $fline["title"];
1640
1641                                         for ($i = 0; $i < $nest_level; $i++)
1642                                                 $fline["title"] = " - " . $fline["title"];
1643
1644                                         printf("<option $is_selected value='%d'>%s</option>",
1645                                                 $fline["id"], htmlspecialchars($fline["title"]));
1646                                 }
1647                         }
1648
1649                 } else {
1650                         $result = db_query($link, "SELECT id,title FROM ttrss_feeds
1651                                 WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
1652
1653                         while ($line = db_fetch_assoc($result)) {
1654
1655                                 $is_selected = ($line["id"] == $default_id) ? "selected=\"1\"" : "";
1656
1657                                 printf("<option $is_selected value='%d'>%s</option>",
1658                                         $line["id"], htmlspecialchars($line["title"]));
1659                         }
1660                 }
1661
1662                 if (!$root_id) {
1663                         print "</select>";
1664                 }
1665         }
1666
1667         function print_feed_cat_select($link, $id, $default_id,
1668                 $attributes, $include_all_cats = true, $root_id = false, $nest_level = 0) {
1669
1670                         if (!$root_id) {
1671                                         print "<select id=\"$id\" name=\"$id\" default=\"$default_id\" onchange=\"catSelectOnChange(this)\" $attributes>";
1672                         }
1673
1674                         if ($root_id)
1675                                 $parent_qpart = "parent_cat = '$root_id'";
1676                         else
1677                                 $parent_qpart = "parent_cat IS NULL";
1678
1679                         $result = db_query($link, "SELECT id,title,
1680                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1681                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1682                                 FROM ttrss_feed_categories
1683                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1684
1685                         while ($line = db_fetch_assoc($result)) {
1686                                 if ($line["id"] == $default_id) {
1687                                         $is_selected = "selected=\"1\"";
1688                                 } else {
1689                                         $is_selected = "";
1690                                 }
1691
1692                                 for ($i = 0; $i < $nest_level; $i++)
1693                                         $line["title"] = " - " . $line["title"];
1694
1695                                 if ($line["title"])
1696                                         printf("<option $is_selected value='%d'>%s</option>",
1697                                                 $line["id"], htmlspecialchars($line["title"]));
1698
1699                                 if ($line["num_children"] > 0)
1700                                         print_feed_cat_select($link, $id, $default_id, $attributes,
1701                                                 $include_all_cats, $line["id"], $nest_level+1);
1702                         }
1703
1704                         if (!$root_id) {
1705                                 if ($include_all_cats) {
1706                                         if (db_num_rows($result) > 0) {
1707                                                 print "<option disabled=\"1\">--------</option>";
1708                                         }
1709
1710                                         if ($default_id == 0) {
1711                                                 $is_selected = "selected=\"1\"";
1712                                         } else {
1713                                                 $is_selected = "";
1714                                         }
1715
1716                                         print "<option $is_selected value=\"0\">".__('Uncategorized')."</option>";
1717                                 }
1718                                 print "</select>";
1719                         }
1720                 }
1721
1722         function checkbox_to_sql_bool($val) {
1723                 return ($val == "on") ? "true" : "false";
1724         }
1725
1726         function getFeedCatTitle($link, $id) {
1727                 if ($id == -1) {
1728                         return __("Special");
1729                 } else if ($id < -10) {
1730                         return __("Labels");
1731                 } else if ($id > 0) {
1732                         $result = db_query($link, "SELECT ttrss_feed_categories.title
1733                                 FROM ttrss_feeds, ttrss_feed_categories WHERE ttrss_feeds.id = '$id' AND
1734                                         cat_id = ttrss_feed_categories.id");
1735                         if (db_num_rows($result) == 1) {
1736                                 return db_fetch_result($result, 0, "title");
1737                         } else {
1738                                 return __("Uncategorized");
1739                         }
1740                 } else {
1741                         return "getFeedCatTitle($id) failed";
1742                 }
1743
1744         }
1745
1746         function getFeedIcon($id) {
1747                 switch ($id) {
1748                 case 0:
1749                         return "images/archive.png";
1750                         break;
1751                 case -1:
1752                         return "images/mark_set.svg";
1753                         break;
1754                 case -2:
1755                         return "images/pub_set.svg";
1756                         break;
1757                 case -3:
1758                         return "images/fresh.png";
1759                         break;
1760                 case -4:
1761                         return "images/tag.png";
1762                         break;
1763                 case -6:
1764                         return "images/recently_read.png";
1765                         break;
1766                 default:
1767                         if ($id < -10) {
1768                                 return "images/label.png";
1769                         } else {
1770                                 if (file_exists(ICONS_DIR . "/$id.ico"))
1771                                         return ICONS_URL . "/$id.ico";
1772                         }
1773                         break;
1774                 }
1775         }
1776
1777         function getFeedTitle($link, $id, $cat = false) {
1778                 if ($cat) {
1779                         return getCategoryTitle($link, $id);
1780                 } else if ($id == -1) {
1781                         return __("Starred articles");
1782                 } else if ($id == -2) {
1783                         return __("Published articles");
1784                 } else if ($id == -3) {
1785                         return __("Fresh articles");
1786                 } else if ($id == -4) {
1787                         return __("All articles");
1788                 } else if ($id === 0 || $id === "0") {
1789                         return __("Archived articles");
1790                 } else if ($id == -6) {
1791                         return __("Recently read");
1792                 } else if ($id < -10) {
1793                         $label_id = -$id - 11;
1794                         $result = db_query($link, "SELECT caption FROM ttrss_labels2 WHERE id = '$label_id'");
1795                         if (db_num_rows($result) == 1) {
1796                                 return db_fetch_result($result, 0, "caption");
1797                         } else {
1798                                 return "Unknown label ($label_id)";
1799                         }
1800
1801                 } else if (is_numeric($id) && $id > 0) {
1802                         $result = db_query($link, "SELECT title FROM ttrss_feeds WHERE id = '$id'");
1803                         if (db_num_rows($result) == 1) {
1804                                 return db_fetch_result($result, 0, "title");
1805                         } else {
1806                                 return "Unknown feed ($id)";
1807                         }
1808                 } else {
1809                         return $id;
1810                 }
1811         }
1812
1813         function make_init_params($link) {
1814                 $params = array();
1815
1816                 $params["sign_progress"] = theme_image($link, "images/indicator_white.gif");
1817                 $params["sign_progress_tiny"] = theme_image($link, "images/indicator_tiny.gif");
1818                 $params["sign_excl"] = theme_image($link, "images/sign_excl.svg");
1819                 $params["sign_info"] = theme_image($link, "images/sign_info.svg");
1820
1821                 foreach (array("ON_CATCHUP_SHOW_NEXT_FEED", "HIDE_READ_FEEDS",
1822                         "ENABLE_FEED_CATS", "FEEDS_SORT_BY_UNREAD", "CONFIRM_FEED_CATCHUP",
1823                         "CDM_AUTO_CATCHUP", "FRESH_ARTICLE_MAX_AGE", "DEFAULT_ARTICLE_LIMIT",
1824                         "HIDE_READ_SHOWS_SPECIAL", "COMBINED_DISPLAY_MODE") as $param) {
1825
1826                                  $params[strtolower($param)] = (int) get_pref($link, $param);
1827                  }
1828
1829                 $params["icons_url"] = ICONS_URL;
1830                 $params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
1831                 $params["default_view_mode"] = get_pref($link, "_DEFAULT_VIEW_MODE");
1832                 $params["default_view_limit"] = (int) get_pref($link, "_DEFAULT_VIEW_LIMIT");
1833                 $params["default_view_order_by"] = get_pref($link, "_DEFAULT_VIEW_ORDER_BY");
1834                 $params["bw_limit"] = (int) $_SESSION["bw_limit"];
1835
1836                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
1837                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1838
1839                 $max_feed_id = db_fetch_result($result, 0, "mid");
1840                 $num_feeds = db_fetch_result($result, 0, "nf");
1841
1842                 $params["max_feed_id"] = (int) $max_feed_id;
1843                 $params["num_feeds"] = (int) $num_feeds;
1844
1845                 $params["collapsed_feedlist"] = (int) get_pref($link, "_COLLAPSED_FEEDLIST");
1846                 $params["hotkeys"] = get_hotkeys_map($link);
1847
1848                 $params["csrf_token"] = $_SESSION["csrf_token"];
1849                 $params["widescreen"] = (int) $_COOKIE["ttrss_widescreen"];
1850
1851                 $params['simple_update'] = defined('SIMPLE_UPDATE_MODE') && SIMPLE_UPDATE_MODE;
1852
1853                 return $params;
1854         }
1855
1856         function get_hotkeys_info($link) {
1857                 $hotkeys = array(
1858                         __("Navigation") => array(
1859                                 "next_feed" => __("Open next feed"),
1860                                 "prev_feed" => __("Open previous feed"),
1861                                 "next_article" => __("Open next article"),
1862                                 "prev_article" => __("Open previous article"),
1863                                 "next_article_noscroll" => __("Open next article (don't scroll long articles)"),
1864                                 "prev_article_noscroll" => __("Open previous article (don't scroll long articles)"),
1865                                 "search_dialog" => __("Show search dialog")),
1866                         __("Article") => array(
1867                                 "toggle_mark" => __("Toggle starred"),
1868                                 "toggle_publ" => __("Toggle published"),
1869                                 "toggle_unread" => __("Toggle unread"),
1870                                 "edit_tags" => __("Edit tags"),
1871                                 "dismiss_selected" => __("Dismiss selected"),
1872                                 "dismiss_read" => __("Dismiss read"),
1873                                 "open_in_new_window" => __("Open in new window"),
1874                                 "catchup_below" => __("Mark below as read"),
1875                                 "catchup_above" => __("Mark above as read"),
1876                                 "article_scroll_down" => __("Scroll down"),
1877                                 "article_scroll_up" => __("Scroll up"),
1878                                 "select_article_cursor" => __("Select article under cursor"),
1879                                 "email_article" => __("Email article"),
1880                                 "close_article" => __("Close article"),
1881                                 "toggle_widescreen" => __("Toggle widescreen mode")),
1882                         __("Article selection") => array(
1883                                 "select_all" => __("Select all articles"),
1884                                 "select_unread" => __("Select unread"),
1885                                 "select_marked" => __("Select starred"),
1886                                 "select_published" => __("Select published"),
1887                                 "select_invert" => __("Invert selection"),
1888                                 "select_none" => __("Deselect everything")),
1889                         __("Feed") => array(
1890                                 "feed_refresh" => __("Refresh current feed"),
1891                                 "feed_unhide_read" => __("Un/hide read feeds"),
1892                                 "feed_subscribe" => __("Subscribe to feed"),
1893                                 "feed_edit" => __("Edit feed"),
1894                                 "feed_catchup" => __("Mark as read"),
1895                                 "feed_reverse" => __("Reverse headlines"),
1896                                 "feed_debug_update" => __("Debug feed update"),
1897                                 "catchup_all" => __("Mark all feeds as read"),
1898                                 "cat_toggle_collapse" => __("Un/collapse current category"),
1899                                 "toggle_combined_mode" => __("Toggle combined mode")),
1900                         __("Go to") => array(
1901                                 "goto_all" => __("All articles"),
1902                                 "goto_fresh" => __("Fresh"),
1903                                 "goto_marked" => __("Starred"),
1904                                 "goto_published" => __("Published"),
1905                                 "goto_tagcloud" => __("Tag cloud"),
1906                                 "goto_prefs" => __("Preferences")),
1907                         __("Other") => array(
1908                                 "create_label" => __("Create label"),
1909                                 "create_filter" => __("Create filter"),
1910                                 "collapse_sidebar" => __("Un/collapse sidebar"),
1911                                 "help_dialog" => __("Show help dialog"))
1912                         );
1913
1914                 return $hotkeys;
1915         }
1916
1917         function get_hotkeys_map($link) {
1918                 $hotkeys = array(
1919 //                      "navigation" => array(
1920                                 "k" => "next_feed",
1921                                 "j" => "prev_feed",
1922                                 "n" => "next_article",
1923                                 "p" => "prev_article",
1924                                 "(38)|up" => "prev_article",
1925                                 "(40)|down" => "next_article",
1926 //                              "^(38)|Ctrl-up" => "prev_article_noscroll",
1927 //                              "^(40)|Ctrl-down" => "next_article_noscroll",
1928                                 "(191)|/" => "search_dialog",
1929 //                      "article" => array(
1930                                 "s" => "toggle_mark",
1931                                 "S" => "toggle_publ",
1932                                 "u" => "toggle_unread",
1933                                 "T" => "edit_tags",
1934                                 "D" => "dismiss_selected",
1935                                 "X" => "dismiss_read",
1936                                 "o" => "open_in_new_window",
1937                                 "c p" => "catchup_below",
1938                                 "c n" => "catchup_above",
1939                                 "N" => "article_scroll_down",
1940                                 "P" => "article_scroll_up",
1941                                 "a W" => "toggle_widescreen",
1942                                 "e" => "email_article",
1943                                 "a q" => "close_article",
1944 //                      "article_selection" => array(
1945                                 "a a" => "select_all",
1946                                 "a u" => "select_unread",
1947                                 "a U" => "select_marked",
1948                                 "a p" => "select_published",
1949                                 "a i" => "select_invert",
1950                                 "a n" => "select_none",
1951 //                      "feed" => array(
1952                                 "f r" => "feed_refresh",
1953                                 "f a" => "feed_unhide_read",
1954                                 "f s" => "feed_subscribe",
1955                                 "f e" => "feed_edit",
1956                                 "f q" => "feed_catchup",
1957                                 "f x" => "feed_reverse",
1958                                 "f D" => "feed_debug_update",
1959                                 "f C" => "toggle_combined_mode",
1960                                 "Q" => "catchup_all",
1961                                 "x" => "cat_toggle_collapse",
1962 //                      "goto" => array(
1963                                 "g a" => "goto_all",
1964                                 "g f" => "goto_fresh",
1965                                 "g s" => "goto_marked",
1966                                 "g p" => "goto_published",
1967                                 "g t" => "goto_tagcloud",
1968                                 "g P" => "goto_prefs",
1969 //                      "other" => array(
1970                                 "(9)|Tab" => "select_article_cursor", // tab
1971                                 "c l" => "create_label",
1972                                 "c f" => "create_filter",
1973                                 "c s" => "collapse_sidebar",
1974                                 "^(191)|Ctrl+/" => "help_dialog",
1975                         );
1976
1977                 if (get_pref($link, 'COMBINED_DISPLAY_MODE')) {
1978                         $hotkeys["^(38)|Ctrl-up"] = "prev_article_noscroll";
1979                         $hotkeys["^(40)|Ctrl-down"] = "next_article_noscroll";
1980                 }
1981
1982                 global $pluginhost;
1983                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_HOTKEY_MAP) as $plugin) {
1984                         $hotkeys = $plugin->hook_hotkey_map($hotkeys);
1985                 }
1986
1987                 $prefixes = array();
1988
1989                 foreach (array_keys($hotkeys) as $hotkey) {
1990                         $pair = explode(" ", $hotkey, 2);
1991
1992                         if (count($pair) > 1 && !in_array($pair[0], $prefixes)) {
1993                                 array_push($prefixes, $pair[0]);
1994                         }
1995                 }
1996
1997                 return array($prefixes, $hotkeys);
1998         }
1999
2000         function make_runtime_info($link) {
2001                 $data = array();
2002
2003                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2004                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2005
2006                 $max_feed_id = db_fetch_result($result, 0, "mid");
2007                 $num_feeds = db_fetch_result($result, 0, "nf");
2008
2009                 $data["max_feed_id"] = (int) $max_feed_id;
2010                 $data["num_feeds"] = (int) $num_feeds;
2011
2012                 $data['last_article_id'] = getLastArticleId($link);
2013                 $data['cdm_expanded'] = get_pref($link, 'CDM_EXPANDED');
2014
2015                 if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
2016
2017                         $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
2018
2019                         if (time() - $_SESSION["daemon_stamp_check"] > 30) {
2020
2021                                 $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
2022
2023                                 if ($stamp) {
2024                                         $stamp_delta = time() - $stamp;
2025
2026                                         if ($stamp_delta > 1800) {
2027                                                 $stamp_check = 0;
2028                                         } else {
2029                                                 $stamp_check = 1;
2030                                                 $_SESSION["daemon_stamp_check"] = time();
2031                                         }
2032
2033                                         $data['daemon_stamp_ok'] = $stamp_check;
2034
2035                                         $stamp_fmt = date("Y.m.d, G:i", $stamp);
2036
2037                                         $data['daemon_stamp'] = $stamp_fmt;
2038                                 }
2039                         }
2040                 }
2041
2042                 if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
2043                                 $new_version_details = @check_for_update($link);
2044
2045                                 $data['new_version_available'] = (int) ($new_version_details != false);
2046
2047                                 $_SESSION["last_version_check"] = time();
2048                                 $_SESSION["version_data"] = $new_version_details;
2049                 }
2050
2051                 return $data;
2052         }
2053
2054         function search_to_sql($link, $search, $match_on) {
2055
2056                 $search_query_part = "";
2057
2058                 $keywords = explode(" ", $search);
2059                 $query_keywords = array();
2060
2061                 foreach ($keywords as $k) {
2062                         if (strpos($k, "-") === 0) {
2063                                 $k = substr($k, 1);
2064                                 $not = "NOT";
2065                         } else {
2066                                 $not = "";
2067                         }
2068
2069                         $commandpair = explode(":", mb_strtolower($k), 2);
2070
2071                         if ($commandpair[0] == "note" && $commandpair[1]) {
2072
2073                                 if ($commandpair[1] == "true")
2074                                         array_push($query_keywords, "($not (note IS NOT NULL AND note != ''))");
2075                                 else
2076                                         array_push($query_keywords, "($not (note IS NULL OR note = ''))");
2077
2078                         } else if ($commandpair[0] == "star" && $commandpair[1]) {
2079
2080                                 if ($commandpair[1] == "true")
2081                                         array_push($query_keywords, "($not (marked = true))");
2082                                 else
2083                                         array_push($query_keywords, "($not (marked = false))");
2084
2085                         } else if ($commandpair[0] == "pub" && $commandpair[1]) {
2086
2087                                 if ($commandpair[1] == "true")
2088                                         array_push($query_keywords, "($not (published = true))");
2089                                 else
2090                                         array_push($query_keywords, "($not (published = false))");
2091
2092                         } else if (strpos($k, "@") === 0) {
2093
2094                                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $_SESSION['uid']);
2095                                 $orig_ts = strtotime(substr($k, 1));
2096                                 $k = date("Y-m-d", convert_timestamp($orig_ts, $user_tz_string, 'UTC'));
2097
2098                                 //$k = date("Y-m-d", strtotime(substr($k, 1)));
2099
2100                                 array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
2101                         } else if ($match_on == "both") {
2102                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2103                                                 OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2104                         } else if ($match_on == "title") {
2105                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%'))");
2106                         } else if ($match_on == "content") {
2107                                 array_push($query_keywords, "(UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2108                         }
2109                 }
2110
2111                 $search_query_part = implode("AND", $query_keywords);
2112
2113                 return $search_query_part;
2114         }
2115
2116         function getParentCategories($link, $cat, $owner_uid) {
2117                 $rv = array();
2118
2119                 $result = db_query($link, "SELECT parent_cat FROM ttrss_feed_categories
2120                         WHERE id = '$cat' AND parent_cat IS NOT NULL AND owner_uid = $owner_uid");
2121
2122                 while ($line = db_fetch_assoc($result)) {
2123                         array_push($rv, $line["parent_cat"]);
2124                         $rv = array_merge($rv, getParentCategories($link, $line["parent_cat"], $owner_uid));
2125                 }
2126
2127                 return $rv;
2128         }
2129
2130         function getChildCategories($link, $cat, $owner_uid) {
2131                 $rv = array();
2132
2133                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories
2134                         WHERE parent_cat = '$cat' AND owner_uid = $owner_uid");
2135
2136                 while ($line = db_fetch_assoc($result)) {
2137                         array_push($rv, $line["id"]);
2138                         $rv = array_merge($rv, getChildCategories($link, $line["id"], $owner_uid));
2139                 }
2140
2141                 return $rv;
2142         }
2143
2144         function queryFeedHeadlines($link, $feed, $limit, $view_mode, $cat_view, $search, $search_mode, $match_on, $override_order = false, $offset = 0, $owner_uid = 0, $filter = false, $since_id = 0, $include_children = false, $ignore_vfeed_group = false) {
2145
2146                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2147
2148                 $ext_tables_part = "";
2149
2150                         if ($search) {
2151
2152                                 if (SPHINX_ENABLED) {
2153                                         $ids = join(",", @sphinx_search($search, 0, 500));
2154
2155                                         if ($ids)
2156                                                 $search_query_part = "ref_id IN ($ids) AND ";
2157                                         else
2158                                                 $search_query_part = "ref_id = -1 AND ";
2159
2160                                 } else {
2161                                         $search_query_part = search_to_sql($link, $search, $match_on);
2162                                         $search_query_part .= " AND ";
2163                                 }
2164
2165                         } else {
2166                                 $search_query_part = "";
2167                         }
2168
2169                         if ($filter) {
2170
2171                                 if (DB_TYPE == "pgsql") {
2172                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '14 days' ";
2173                                 } else {
2174                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL 14 DAY) ";
2175                                 }
2176
2177                                 $override_order = "updated DESC";
2178
2179                                 $filter_query_part = filter_to_sql($link, $filter, $owner_uid);
2180
2181                                 // Try to check if SQL regexp implementation chokes on a valid regexp
2182                                 $result = db_query($link, "SELECT true AS true_val FROM ttrss_entries,
2183                                         ttrss_user_entries, ttrss_feeds, ttrss_feed_categories
2184                                         WHERE $filter_query_part LIMIT 1", false);
2185
2186                                 if ($result) {
2187                                         $test = db_fetch_result($result, 0, "true_val");
2188
2189                                         if (!$test) {
2190                                                 $filter_query_part = "false AND";
2191                                         } else {
2192                                                 $filter_query_part .= " AND";
2193                                         }
2194                                 } else {
2195                                         $filter_query_part = "false AND";
2196                                 }
2197
2198                         } else {
2199                                 $filter_query_part = "";
2200                         }
2201
2202                         if ($since_id) {
2203                                 $since_id_part = "ttrss_entries.id > $since_id AND ";
2204                         } else {
2205                                 $since_id_part = "";
2206                         }
2207
2208                         $view_query_part = "";
2209
2210                         if ($view_mode == "adaptive" || $view_query_part == "noscores") {
2211                                 if ($search) {
2212                                         $view_query_part = " ";
2213                                 } else if ($feed != -1) {
2214                                         $unread = getFeedUnread($link, $feed, $cat_view);
2215
2216                                         if ($cat_view && $feed > 0 && $include_children)
2217                                                 $unread += getCategoryChildrenUnread($link, $feed);
2218
2219                                         if ($unread > 0) {
2220                                                 $view_query_part = " unread = true AND ";
2221                                         }
2222                                 }
2223                         }
2224
2225                         if ($view_mode == "marked") {
2226                                 $view_query_part = " marked = true AND ";
2227                         }
2228
2229                         if ($view_mode == "published") {
2230                                 $view_query_part = " published = true AND ";
2231                         }
2232
2233                         if ($view_mode == "unread") {
2234                                 $view_query_part = " unread = true AND ";
2235                         }
2236
2237                         if ($view_mode == "updated") {
2238                                 $view_query_part = " (last_read is null and unread = false) AND ";
2239                         }
2240
2241                         if ($limit > 0) {
2242                                 $limit_query_part = "LIMIT " . $limit;
2243                         }
2244
2245                         $allow_archived = false;
2246
2247                         $vfeed_query_part = "";
2248
2249                         // override query strategy and enable feed display when searching globally
2250                         if ($search && $search_mode == "all_feeds") {
2251                                 $query_strategy_part = "true";
2252                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2253                         /* tags */
2254                         } else if (!is_numeric($feed)) {
2255                                 $query_strategy_part = "true";
2256                                 $vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
2257                                         id = feed_id) as feed_title,";
2258                         } else if ($search && $search_mode == "this_cat") {
2259                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2260
2261                                 if ($feed > 0) {
2262                                         if ($include_children) {
2263                                                 $subcats = getChildCategories($link, $feed, $owner_uid);
2264                                                 array_push($subcats, $feed);
2265                                                 $cats_qpart = join(",", $subcats);
2266                                         } else {
2267                                                 $cats_qpart = $feed;
2268                                         }
2269
2270                                         $query_strategy_part = "ttrss_feeds.cat_id IN ($cats_qpart)";
2271
2272                                 } else {
2273                                         $query_strategy_part = "ttrss_feeds.cat_id IS NULL";
2274                                 }
2275
2276                         } else if ($feed > 0) {
2277
2278                                 if ($cat_view) {
2279
2280                                         if ($feed > 0) {
2281                                                 if ($include_children) {
2282                                                         # sub-cats
2283                                                         $subcats = getChildCategories($link, $feed, $owner_uid);
2284
2285                                                         array_push($subcats, $feed);
2286                                                         $query_strategy_part = "cat_id IN (".
2287                                                                         implode(",", $subcats).")";
2288
2289                                                 } else {
2290                                                         $query_strategy_part = "cat_id = '$feed'";
2291                                                 }
2292
2293                                         } else {
2294                                                 $query_strategy_part = "cat_id IS NULL";
2295                                         }
2296
2297                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2298
2299                                 } else {
2300                                         $query_strategy_part = "feed_id = '$feed'";
2301                                 }
2302                         } else if ($feed == 0 && !$cat_view) { // archive virtual feed
2303                                 $query_strategy_part = "feed_id IS NULL";
2304                                 $allow_archived = true;
2305                         } else if ($feed == 0 && $cat_view) { // uncategorized
2306                                 $query_strategy_part = "cat_id IS NULL AND feed_id IS NOT NULL";
2307                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2308                         } else if ($feed == -1) { // starred virtual feed
2309                                 $query_strategy_part = "marked = true";
2310                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2311                                 $allow_archived = true;
2312
2313                                 if (!$override_order) $override_order = "last_marked DESC, updated DESC";
2314
2315                         } else if ($feed == -2) { // published virtual feed OR labels category
2316
2317                                 if (!$cat_view) {
2318                                         $query_strategy_part = "published = true";
2319                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2320                                         $allow_archived = true;
2321
2322                                         if (!$override_order) $override_order = "last_published DESC, updated DESC";
2323                                 } else {
2324                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2325
2326                                         $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2327
2328                                         $query_strategy_part = "ttrss_labels2.id = ttrss_user_labels2.label_id AND
2329                                                 ttrss_user_labels2.article_id = ref_id";
2330
2331                                 }
2332                         } else if ($feed == -6) { // recently read
2333                                 $query_strategy_part = "unread = false AND last_read IS NOT NULL";
2334                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2335                                 $allow_archived = true;
2336
2337                                 if (!$override_order) $override_order = "last_read DESC";
2338                         } else if ($feed == -3) { // fresh virtual feed
2339                                 $query_strategy_part = "unread = true AND score >= 0";
2340
2341                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
2342
2343                                 if (DB_TYPE == "pgsql") {
2344                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
2345                                 } else {
2346                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
2347                                 }
2348
2349                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2350                         } else if ($feed == -4) { // all articles virtual feed
2351                                 $query_strategy_part = "true";
2352                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2353                         } else if ($feed <= -10) { // labels
2354                                 $label_id = -$feed - 11;
2355
2356                                 $query_strategy_part = "label_id = '$label_id' AND
2357                                         ttrss_labels2.id = ttrss_user_labels2.label_id AND
2358                                         ttrss_user_labels2.article_id = ref_id";
2359
2360                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2361                                 $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2362                                 $allow_archived = true;
2363
2364                         } else {
2365                                 $query_strategy_part = "true";
2366                         }
2367
2368                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
2369                                 $date_sort_field = "updated";
2370                         } else {
2371                                 $date_sort_field = "date_entered";
2372                         }
2373
2374                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
2375                                 $order_by = "$date_sort_field";
2376                         } else {
2377                                 $order_by = "$date_sort_field DESC";
2378                         }
2379
2380                         if ($view_mode != "noscores") {
2381                                 $order_by = "score DESC, $order_by";
2382                         }
2383
2384                         if ($override_order) {
2385                                 $order_by = $override_order;
2386                         }
2387
2388                         $feed_title = "";
2389
2390                         if ($search) {
2391                                 $feed_title = T_sprintf("Search results: %s", $search);
2392                         } else {
2393                                 if ($cat_view) {
2394                                         $feed_title = getCategoryTitle($link, $feed);
2395                                 } else {
2396                                         if (is_numeric($feed) && $feed > 0) {
2397                                                 $result = db_query($link, "SELECT title,site_url,last_error
2398                                                         FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = $owner_uid");
2399
2400                                                 $feed_title = db_fetch_result($result, 0, "title");
2401                                                 $feed_site_url = db_fetch_result($result, 0, "site_url");
2402                                                 $last_error = db_fetch_result($result, 0, "last_error");
2403                                         } else {
2404                                                 $feed_title = getFeedTitle($link, $feed);
2405                                         }
2406                                 }
2407                         }
2408
2409                         $content_query_part = "content as content_preview, cached_content, ";
2410
2411                         if (is_numeric($feed)) {
2412
2413                                 if ($feed >= 0) {
2414                                         $feed_kind = "Feeds";
2415                                 } else {
2416                                         $feed_kind = "Labels";
2417                                 }
2418
2419                                 if ($limit_query_part) {
2420                                         $offset_query_part = "OFFSET $offset";
2421                                 }
2422
2423                                 // proper override_order applied above
2424                                 if ($vfeed_query_part && !$ignore_vfeed_group && get_pref($link, 'VFEED_GROUP_BY_FEED', $owner_uid)) {
2425                                         if (!$override_order) {
2426                                                 $order_by = "ttrss_feeds.title, $order_by";
2427                                         } else {
2428                                                 $order_by = "ttrss_feeds.title, $override_order";
2429                                         }
2430                                 }
2431
2432                                 if (!$allow_archived) {
2433                                         $from_qpart = "ttrss_entries,ttrss_user_entries,ttrss_feeds$ext_tables_part";
2434                                         $feed_check_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
2435
2436                                 } else {
2437                                         $from_qpart = "ttrss_entries$ext_tables_part,ttrss_user_entries
2438                                                 LEFT JOIN ttrss_feeds ON (feed_id = ttrss_feeds.id)";
2439                                 }
2440
2441                                 $query = "SELECT DISTINCT
2442                                                 date_entered,
2443                                                 guid,
2444                                                 ttrss_entries.id,ttrss_entries.title,
2445                                                 updated,
2446                                                 label_cache,
2447                                                 tag_cache,
2448                                                 always_display_enclosures,
2449                                                 site_url,
2450                                                 note,
2451                                                 num_comments,
2452                                                 comments,
2453                                                 int_id,
2454                                                 unread,feed_id,marked,published,link,last_read,orig_feed_id,
2455                                                 last_marked, last_published,
2456                                                 ".SUBSTRING_FOR_DATE."(last_read,1,19) as last_read_noms,
2457                                                 $vfeed_query_part
2458                                                 $content_query_part
2459                                                 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated_noms,
2460                                                 author,score
2461                                         FROM
2462                                                 $from_qpart
2463                                         WHERE
2464                                         $feed_check_qpart
2465                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
2466                                         ttrss_user_entries.owner_uid = '$owner_uid' AND
2467                                         $search_query_part
2468                                         $filter_query_part
2469                                         $view_query_part
2470                                         $since_id_part
2471                                         $query_strategy_part ORDER BY $order_by
2472                                         $limit_query_part $offset_query_part";
2473
2474                                 if ($_REQUEST["debug"]) print $query;
2475
2476                                 $result = db_query($link, $query);
2477
2478                         } else {
2479                                 // browsing by tag
2480
2481                                 $select_qpart = "SELECT DISTINCT " .
2482                                                                 "date_entered," .
2483                                                                 "guid," .
2484                                                                 "note," .
2485                                                                 "ttrss_entries.id as id," .
2486                                                                 "title," .
2487                                                                 "updated," .
2488                                                                 "unread," .
2489                                                                 "feed_id," .
2490                                                                 "orig_feed_id," .
2491                                                                 "marked," .
2492                                                                 "num_comments, " .
2493                                                                 "comments, " .
2494                                                                 "tag_cache," .
2495                                                                 "label_cache," .
2496                                                                 "link," .
2497                                                                 "last_read," .
2498                                                                 "last_marked, last_published, " .
2499                                                                 SUBSTRING_FOR_DATE . "(last_read,1,19) as last_read_noms," .
2500                                                                 $since_id_part .
2501                                                                 $vfeed_query_part .
2502                                                                 $content_query_part .
2503                                                                 SUBSTRING_FOR_DATE . "(updated,1,19) as updated_noms," .
2504                                                                 "score ";
2505
2506                                 $feed_kind = "Tags";
2507                                 $all_tags = explode(",", $feed);
2508                                 if ($search_mode == 'any') {
2509                                         $tag_sql = "tag_name in (" . implode(", ", array_map("db_quote", $all_tags)) . ")";
2510                                         $from_qpart = " FROM ttrss_entries,ttrss_user_entries,ttrss_tags ";
2511                                         $where_qpart = " WHERE " .
2512                                                                    "ref_id = ttrss_entries.id AND " .
2513                                                                    "ttrss_user_entries.owner_uid = $owner_uid AND " .
2514                                                                    "post_int_id = int_id AND $tag_sql AND " .
2515                                                                    $view_query_part .
2516                                                                    $search_query_part .
2517                                                                    $query_strategy_part . " ORDER BY $order_by " .
2518                                                                    $limit_query_part;
2519
2520                                 } else {
2521                                         $i = 1;
2522                                         $sub_selects = array();
2523                                         $sub_ands = array();
2524                                         foreach ($all_tags as $term) {
2525                                                 array_push($sub_selects, "(SELECT post_int_id from ttrss_tags WHERE tag_name = " . db_quote($term) . " AND owner_uid = $owner_uid) as A$i");
2526                                                 $i++;
2527                                         }
2528                                         if ($i > 2) {
2529                                                 $x = 1;
2530                                                 $y = 2;
2531                                                 do {
2532                                                         array_push($sub_ands, "A$x.post_int_id = A$y.post_int_id");
2533                                                         $x++;
2534                                                         $y++;
2535                                                 } while ($y < $i);
2536                                         }
2537                                         array_push($sub_ands, "A1.post_int_id = ttrss_user_entries.int_id and ttrss_user_entries.owner_uid = $owner_uid");
2538                                         array_push($sub_ands, "ttrss_user_entries.ref_id = ttrss_entries.id");
2539                                         $from_qpart = " FROM " . implode(", ", $sub_selects) . ", ttrss_user_entries, ttrss_entries";
2540                                         $where_qpart = " WHERE " . implode(" AND ", $sub_ands);
2541                                 }
2542                                 //                              error_log("TAG SQL: " . $tag_sql);
2543                                 // $tag_sql = "tag_name = '$feed'";   DEFAULT way
2544
2545                                 //                              error_log("[". $select_qpart . "][" . $from_qpart . "][" .$where_qpart . "]");
2546                                 $result = db_query($link, $select_qpart . $from_qpart . $where_qpart);
2547                         }
2548
2549                         return array($result, $feed_title, $feed_site_url, $last_error);
2550
2551         }
2552
2553         function sanitize($link, $str, $force_strip_tags = false, $owner = false, $site_url = false) {
2554                 if (!$owner) $owner = $_SESSION["uid"];
2555
2556                 $res = trim($str); if (!$res) return '';
2557
2558                 $config = array('safe' => 1, 'deny_attribute' => 'style, width, height, class, id', 'comment' => 1, 'cdata' => 1, 'balance' => 0);
2559                 $spec = 'img=width,height';
2560                 $res = htmLawed($res, $config, $spec);
2561
2562                 if (get_pref($link, "STRIP_IMAGES", $owner)) {
2563                         $res = preg_replace('/<img[^>]+>/is', '', $res);
2564                 }
2565
2566                 if (strpos($res, "href=") === false)
2567                         $res = rewrite_urls($res);
2568
2569                 $charset_hack = '<head>
2570                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
2571                 </head>';
2572
2573                 $res = trim($res); if (!$res) return '';
2574
2575                 libxml_use_internal_errors(true);
2576
2577                 $doc = new DOMDocument();
2578                 $doc->loadHTML($charset_hack . $res);
2579                 $xpath = new DOMXPath($doc);
2580
2581                 $entries = $xpath->query('(//a[@href]|//img[@src])');
2582
2583                 foreach ($entries as $entry) {
2584
2585                         if ($site_url) {
2586
2587                                 if ($entry->hasAttribute('href'))
2588                                         $entry->setAttribute('href',
2589                                                 rewrite_relative_url($site_url, $entry->getAttribute('href')));
2590
2591                                 if ($entry->hasAttribute('src'))
2592                                         if (preg_match('/^image.php\?i=[a-z0-9]+$/', $entry->getAttribute('src')) == 0)
2593                                                 $entry->setAttribute('src',
2594                                                         rewrite_relative_url($site_url, $entry->getAttribute('src')));
2595                         }
2596
2597                         if (strtolower($entry->nodeName) == "a") {
2598                                 $entry->setAttribute("target", "_blank");
2599                         }
2600                 }
2601
2602                 $node = $doc->getElementsByTagName('body')->item(0);
2603
2604                 return $doc->saveXML($node);
2605         }
2606
2607         function check_for_update($link) {
2608                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2609                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION .
2610                                 "&iid=" . sha1(SELF_URL_PATH);
2611
2612                         $version_data = @fetch_file_contents($version_url);
2613
2614                         if ($version_data) {
2615                                 $version_data = json_decode($version_data, true);
2616                                 if ($version_data && $version_data['version']) {
2617
2618                                         if (version_compare(VERSION, $version_data['version']) == -1) {
2619                                                 return $version_data;
2620                                         }
2621                                 }
2622                         }
2623                 }
2624                 return false;
2625         }
2626
2627         function catchupArticlesById($link, $ids, $cmode, $owner_uid = false) {
2628
2629                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2630                 if (count($ids) == 0) return;
2631
2632                 $tmp_ids = array();
2633
2634                 foreach ($ids as $id) {
2635                         array_push($tmp_ids, "ref_id = '$id'");
2636                 }
2637
2638                 $ids_qpart = join(" OR ", $tmp_ids);
2639
2640                 if ($cmode == 0) {
2641                         db_query($link, "UPDATE ttrss_user_entries SET
2642                         unread = false,last_read = NOW()
2643                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2644                 } else if ($cmode == 1) {
2645                         db_query($link, "UPDATE ttrss_user_entries SET
2646                         unread = true
2647                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2648                 } else {
2649                         db_query($link, "UPDATE ttrss_user_entries SET
2650                         unread = NOT unread,last_read = NOW()
2651                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2652                 }
2653
2654                 /* update ccache */
2655
2656                 $result = db_query($link, "SELECT DISTINCT feed_id FROM ttrss_user_entries
2657                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2658
2659                 while ($line = db_fetch_assoc($result)) {
2660                         ccache_update($link, $line["feed_id"], $owner_uid);
2661                 }
2662         }
2663
2664         function get_article_tags($link, $id, $owner_uid = 0, $tag_cache = false) {
2665
2666                 $a_id = db_escape_string($id);
2667
2668                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2669
2670                 $query = "SELECT DISTINCT tag_name,
2671                         owner_uid as owner FROM
2672                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
2673                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
2674
2675                 $obj_id = md5("TAGS:$owner_uid:$id");
2676                 $tags = array();
2677
2678                 /* check cache first */
2679
2680                 if ($tag_cache === false) {
2681                         $result = db_query($link, "SELECT tag_cache FROM ttrss_user_entries
2682                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2683
2684                         $tag_cache = db_fetch_result($result, 0, "tag_cache");
2685                 }
2686
2687                 if ($tag_cache) {
2688                         $tags = explode(",", $tag_cache);
2689                 } else {
2690
2691                         /* do it the hard way */
2692
2693                         $tmp_result = db_query($link, $query);
2694
2695                         while ($tmp_line = db_fetch_assoc($tmp_result)) {
2696                                 array_push($tags, $tmp_line["tag_name"]);
2697                         }
2698
2699                         /* update the cache */
2700
2701                         $tags_str = db_escape_string(join(",", $tags));
2702
2703                         db_query($link, "UPDATE ttrss_user_entries
2704                                 SET tag_cache = '$tags_str' WHERE ref_id = '$id'
2705                                 AND owner_uid = $owner_uid");
2706                 }
2707
2708                 return $tags;
2709         }
2710
2711         function trim_array($array) {
2712                 $tmp = $array;
2713                 array_walk($tmp, 'trim');
2714                 return $tmp;
2715         }
2716
2717         function tag_is_valid($tag) {
2718                 if ($tag == '') return false;
2719                 if (preg_match("/^[0-9]*$/", $tag)) return false;
2720                 if (mb_strlen($tag) > 250) return false;
2721
2722                 if (function_exists('iconv')) {
2723                         $tag = iconv("utf-8", "utf-8", $tag);
2724                 }
2725
2726                 if (!$tag) return false;
2727
2728                 return true;
2729         }
2730
2731         function render_login_form($link, $form_id = 0) {
2732                 switch ($form_id) {
2733                 case 0:
2734                         require_once "login_form.php";
2735                         break;
2736                 case 1:
2737                         require_once "mobile/login_form.php";
2738                         break;
2739                 }
2740                 exit;
2741         }
2742
2743         // from http://developer.apple.com/internet/safari/faq.html
2744         function no_cache_incantation() {
2745                 header("Expires: Mon, 22 Dec 1980 00:00:00 GMT"); // Happy birthday to me :)
2746                 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
2747                 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); // HTTP/1.1
2748                 header("Cache-Control: post-check=0, pre-check=0", false);
2749                 header("Pragma: no-cache"); // HTTP/1.0
2750         }
2751
2752         function format_warning($msg, $id = "") {
2753                 global $link;
2754                 return "<div class=\"warning\" id=\"$id\">
2755                         <img src=\"".theme_image($link, "images/sign_excl.svg")."\">$msg</div>";
2756         }
2757
2758         function format_notice($msg, $id = "") {
2759                 global $link;
2760                 return "<div class=\"notice\" id=\"$id\">
2761                         <img src=\"".theme_image($link, "images/sign_info.svg")."\">$msg</div>";
2762         }
2763
2764         function format_error($msg, $id = "") {
2765                 global $link;
2766                 return "<div class=\"error\" id=\"$id\">
2767                         <img src=\"".theme_image($link, "images/sign_excl.svg")."\">$msg</div>";
2768         }
2769
2770         function print_notice($msg) {
2771                 return print format_notice($msg);
2772         }
2773
2774         function print_warning($msg) {
2775                 return print format_warning($msg);
2776         }
2777
2778         function print_error($msg) {
2779                 return print format_error($msg);
2780         }
2781
2782
2783         function T_sprintf() {
2784                 $args = func_get_args();
2785                 return vsprintf(__(array_shift($args)), $args);
2786         }
2787
2788         function format_inline_player($link, $url, $ctype) {
2789
2790                 $entry = "";
2791
2792                 if (strpos($ctype, "audio/") === 0) {
2793
2794                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
2795                                 strpos($_SERVER['HTTP_USER_AGENT'], "Chrome") !== false ||
2796                                 strpos($_SERVER['HTTP_USER_AGENT'], "Safari") !== false )) {
2797
2798                                 $id = 'AUDIO-' . uniqid();
2799
2800                                 $entry .= "<audio id=\"$id\"\" controls style='display : none'>
2801                                         <source type=\"$ctype\" src=\"$url\"></source>
2802                                         </audio>";
2803
2804                                 $entry .= "<span onclick=\"player(this)\"
2805                                         title=\"".__("Click to play")."\" status=\"0\"
2806                                         class=\"player\" audio-id=\"$id\">".__("Play")."</span>";
2807
2808                         } else {
2809
2810                                 $entry .= "<object type=\"application/x-shockwave-flash\"
2811                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
2812                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
2813                                         <param name=\"movie\"
2814                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
2815                                         </object>";
2816                         }
2817
2818                         if ($entry) $entry .= "&nbsp;" . basename($url);
2819
2820                         return $entry;
2821
2822                 }
2823
2824                 return "";
2825
2826 /*              $filename = substr($url, strrpos($url, "/")+1);
2827
2828                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
2829                         $filename . " (" . $ctype . ")" . "</a>"; */
2830
2831         }
2832
2833         function format_article($link, $id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
2834                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2835
2836                 $rv = array();
2837
2838                 $rv['id'] = $id;
2839
2840                 /* we can figure out feed_id from article id anyway, why do we
2841                  * pass feed_id here? let's ignore the argument :( */
2842
2843                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
2844                         WHERE ref_id = '$id'");
2845
2846                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
2847
2848                 $rv['feed_id'] = $feed_id;
2849
2850                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
2851
2852                 if ($mark_as_read) {
2853                         $result = db_query($link, "UPDATE ttrss_user_entries
2854                                 SET unread = false,last_read = NOW()
2855                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2856
2857                         ccache_update($link, $feed_id, $owner_uid);
2858                 }
2859
2860                 $result = db_query($link, "SELECT id,title,link,content,feed_id,comments,int_id,
2861                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
2862                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
2863                         num_comments,
2864                         tag_cache,
2865                         author,
2866                         orig_feed_id,
2867                         note,
2868                         cached_content
2869                         FROM ttrss_entries,ttrss_user_entries
2870                         WHERE   id = '$id' AND ref_id = id AND owner_uid = $owner_uid");
2871
2872                 if ($result) {
2873
2874                         $line = db_fetch_assoc($result);
2875
2876                         $tag_cache = $line["tag_cache"];
2877
2878                         $line["tags"] = get_article_tags($link, $id, $owner_uid, $line["tag_cache"]);
2879                         unset($line["tag_cache"]);
2880
2881                         $line["content"] = sanitize($link, $line["content"], false, $owner_uid, $line["site_url"]);
2882
2883                         global $pluginhost;
2884
2885                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_RENDER_ARTICLE) as $p) {
2886                                 $line = $p->hook_render_article($line);
2887                         }
2888
2889                         $num_comments = $line["num_comments"];
2890                         $entry_comments = "";
2891
2892                         if ($num_comments > 0) {
2893                                 if ($line["comments"]) {
2894                                         $comments_url = htmlspecialchars($line["comments"]);
2895                                 } else {
2896                                         $comments_url = htmlspecialchars($line["link"]);
2897                                 }
2898                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
2899                         } else {
2900                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
2901                                         $entry_comments = "<a target='_blank' href=\"".htmlspecialchars($line["comments"])."\">comments</a>";
2902                                 }
2903                         }
2904
2905                         if ($zoom_mode) {
2906                                 header("Content-Type: text/html");
2907                                 $rv['content'] .= "<html><head>
2908                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
2909                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
2910                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
2911                                         </head><body>";
2912                         }
2913
2914                         $title_escaped = htmlspecialchars($line['title']);
2915
2916                         $rv['content'] .= "<div id=\"PTITLE-FULL-$id\" style=\"display : none\">" .
2917                                 strip_tags($line['title']) . "</div>";
2918
2919                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
2920
2921                         $rv['content'] .= "<div class=\"postHeader\" id=\"POSTHDR-$id\">";
2922
2923                         $entry_author = $line["author"];
2924
2925                         if ($entry_author) {
2926                                 $entry_author = __(" - ") . $entry_author;
2927                         }
2928
2929                         $parsed_updated = make_local_datetime($link, $line["updated"], true,
2930                                 $owner_uid, true);
2931
2932                         $rv['content'] .= "<div class=\"postDate\">$parsed_updated</div>";
2933
2934                         if ($line["link"]) {
2935                                 $rv['content'] .= "<div class='postTitle'><a target='_blank'
2936                                         title=\"".htmlspecialchars($line['title'])."\"
2937                                         href=\"" .
2938                                         htmlspecialchars($line["link"]) . "\">" .
2939                                         $line["title"] .
2940                                         "<span class='author'>$entry_author</span></a></div>";
2941                         } else {
2942                                 $rv['content'] .= "<div class='postTitle'>" . $line["title"] . "$entry_author</div>";
2943                         }
2944
2945                         $tags_str = format_tags_string($line["tags"], $id);
2946                         $tags_str_full = join(", ", $line["tags"]);
2947
2948                         if (!$tags_str_full) $tags_str_full = __("no tags");
2949
2950                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
2951
2952                         $rv['content'] .= "<div class='postTags' style='float : right'>
2953                                 <img src='".theme_image($link, 'images/tag.png')."'
2954                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
2955
2956                         if (!$zoom_mode) {
2957                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
2958                                         <a title=\"".__('Edit tags for this article')."\"
2959                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
2960
2961                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
2962                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
2963                                         position=\"below\">$tags_str_full</div>";
2964
2965                                 global $pluginhost;
2966
2967                                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_ARTICLE_BUTTON) as $p) {
2968                                         $rv['content'] .= $p->hook_article_button($line);
2969                                 }
2970
2971
2972                         } else {
2973                                 $tags_str = strip_tags($tags_str);
2974                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
2975                         }
2976                         $rv['content'] .= "</div>";
2977                         $rv['content'] .= "<div clear='both'>$entry_comments</div>";
2978
2979                         if ($line["orig_feed_id"]) {
2980
2981                                 $tmp_result = db_query($link, "SELECT * FROM ttrss_archived_feeds
2982                                         WHERE id = ".$line["orig_feed_id"]);
2983
2984                                 if (db_num_rows($tmp_result) != 0) {
2985
2986                                         $rv['content'] .= "<div clear='both'>";
2987                                         $rv['content'] .= __("Originally from:");
2988
2989                                         $rv['content'] .= "&nbsp;";
2990
2991                                         $tmp_line = db_fetch_assoc($tmp_result);
2992
2993                                         $rv['content'] .= "<a target='_blank'
2994                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
2995                                                 $tmp_line['title'] . "</a>";
2996
2997                                         $rv['content'] .= "&nbsp;";
2998
2999                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3000                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.svg'></a>";
3001
3002                                         $rv['content'] .= "</div>";
3003                                 }
3004                         }
3005
3006                         $rv['content'] .= "</div>";
3007
3008                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3009                                 if ($line['note']) {
3010                                         $rv['content'] .= format_article_note($id, $line['note'], !$zoom_mode);
3011                                 }
3012                         $rv['content'] .= "</div>";
3013
3014                         $rv['content'] .= "<div class=\"postContent\">";
3015
3016                         // N-grams
3017
3018                         if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_RELATED_THRESHOLD')) {
3019
3020                                 $ngram_result = db_query($link, "SELECT id,title FROM
3021                                                 ttrss_entries,ttrss_user_entries
3022                                         WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
3023                                                 AND similarity(title, '$title_escaped') >= "._NGRAM_TITLE_RELATED_THRESHOLD."
3024                                                 AND title != '$title_escaped'
3025                                                 AND owner_uid = $owner_uid");
3026
3027                                 if (db_num_rows($ngram_result) > 0) {
3028                                         $rv['content'] .= "<div dojoType=\"dijit.form.DropDownButton\">".
3029                                                 "<span>" . __('Related')."</span>";
3030                                         $rv['content'] .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3031
3032                                         while ($nline = db_fetch_assoc($ngram_result)) {
3033                                                 $rv['content'] .= "<div onclick=\"hlOpenInNewTab(null,".$nline['id'].")\"
3034                                                         dojoType=\"dijit.MenuItem\">".$nline['title']."</div>";
3035
3036                                         }
3037                                         $rv['content'] .= "</div></div><br/";
3038                                 }
3039                         }
3040
3041                         $rv['content'] .= $line["content"];
3042
3043                         $rv['content'] .= format_article_enclosures($link, $id,
3044                                 $always_display_enclosures, $line["content"]);
3045
3046                         $rv['content'] .= "</div>";
3047
3048                         $rv['content'] .= "</div>";
3049
3050                 }
3051
3052                 if ($zoom_mode) {
3053                         $rv['content'] .= "
3054                                 <div style=\"text-align : center\">
3055                                 <button onclick=\"return window.close()\">".
3056                                         __("Close this window")."</button></div>";
3057                         $rv['content'] .= "</body></html>";
3058                 }
3059
3060                 return $rv;
3061
3062         }
3063
3064         function print_checkpoint($n, $s) {
3065                 $ts = microtime(true);
3066                 echo sprintf("<!-- CP[$n] %.4f seconds -->", $ts - $s);
3067                 return $ts;
3068         }
3069
3070         function sanitize_tag($tag) {
3071                 $tag = trim($tag);
3072
3073                 $tag = mb_strtolower($tag, 'utf-8');
3074
3075                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3076
3077 //              $tag = str_replace('"', "", $tag);
3078 //              $tag = str_replace("+", " ", $tag);
3079                 $tag = str_replace("technorati tag: ", "", $tag);
3080
3081                 return $tag;
3082         }
3083
3084         function get_self_url_prefix() {
3085                 if (strrpos(SELF_URL_PATH, "/") === strlen(SELF_URL_PATH)-1) {
3086                         return substr(SELF_URL_PATH, 0, strlen(SELF_URL_PATH)-1);
3087                 } else {
3088                         return SELF_URL_PATH;
3089                 }
3090         }
3091
3092         /**
3093          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3094          *
3095          * @return string The Mozilla Firefox feed adding URL.
3096          */
3097         function add_feed_url() {
3098                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3099
3100                 $url_path = get_self_url_prefix() .
3101                         "/public.php?op=subscribe&feed_url=%s";
3102                 return $url_path;
3103         } // function add_feed_url
3104
3105         function encrypt_password($pass, $salt = '', $mode2 = false) {
3106                 if ($salt && $mode2) {
3107                         return "MODE2:" . hash('sha256', $salt . $pass);
3108                 } else if ($salt) {
3109                         return "SHA1X:" . sha1("$salt:$pass");
3110                 } else {
3111                         return "SHA1:" . sha1($pass);
3112                 }
3113         } // function encrypt_password
3114
3115         function load_filters($link, $feed_id, $owner_uid, $action_id = false) {
3116                 $filters = array();
3117
3118                 $cat_id = (int)getFeedCategory($link, $feed_id);
3119
3120                 $result = db_query($link, "SELECT * FROM ttrss_filters2 WHERE
3121                         owner_uid = $owner_uid AND enabled = true");
3122
3123                 $check_cats = join(",", array_merge(
3124                         getParentCategories($link, $cat_id, $owner_uid),
3125                         array($cat_id)));
3126
3127                 while ($line = db_fetch_assoc($result)) {
3128                         $filter_id = $line["id"];
3129
3130                         $result2 = db_query($link, "SELECT
3131                                 r.reg_exp, r.feed_id, r.cat_id, r.cat_filter, t.name AS type_name
3132                                 FROM ttrss_filters2_rules AS r,
3133                                 ttrss_filter_types AS t
3134                                 WHERE
3135                                         (cat_id IS NULL OR cat_id IN ($check_cats)) AND
3136                                         (feed_id IS NULL OR feed_id = '$feed_id') AND
3137                                         filter_type = t.id AND filter_id = '$filter_id'");
3138
3139                         $rules = array();
3140                         $actions = array();
3141
3142                         while ($rule_line = db_fetch_assoc($result2)) {
3143 #                               print_r($rule_line);
3144
3145                                 $rule = array();
3146                                 $rule["reg_exp"] = $rule_line["reg_exp"];
3147                                 $rule["type"] = $rule_line["type_name"];
3148
3149                                 array_push($rules, $rule);
3150                         }
3151
3152                         $result2 = db_query($link, "SELECT a.action_param,t.name AS type_name
3153                                 FROM ttrss_filters2_actions AS a,
3154                                 ttrss_filter_actions AS t
3155                                 WHERE
3156                                         action_id = t.id AND filter_id = '$filter_id'");
3157
3158                         while ($action_line = db_fetch_assoc($result2)) {
3159 #                               print_r($action_line);
3160
3161                                 $action = array();
3162                                 $action["type"] = $action_line["type_name"];
3163                                 $action["param"] = $action_line["action_param"];
3164
3165                                 array_push($actions, $action);
3166                         }
3167
3168
3169                         $filter = array();
3170                         $filter["match_any_rule"] = sql_bool_to_bool($line["match_any_rule"]);
3171                         $filter["rules"] = $rules;
3172                         $filter["actions"] = $actions;
3173
3174                         if (count($rules) > 0 && count($actions) > 0) {
3175                                 array_push($filters, $filter);
3176                         }
3177                 }
3178
3179                 return $filters;
3180         }
3181
3182         function get_score_pic($score) {
3183                 if ($score > 100) {
3184                         return "score_high.png";
3185                 } else if ($score > 0) {
3186                         return "score_half_high.png";
3187                 } else if ($score < -100) {
3188                         return "score_low.png";
3189                 } else if ($score < 0) {
3190                         return "score_half_low.png";
3191                 } else {
3192                         return "score_neutral.png";
3193                 }
3194         }
3195
3196         function feed_has_icon($id) {
3197                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3198         }
3199
3200         function init_connection($link) {
3201                 if ($link) {
3202
3203                         if (DB_TYPE == "pgsql") {
3204                                 pg_query($link, "set client_encoding = 'UTF-8'");
3205                                 pg_set_client_encoding("UNICODE");
3206                                 pg_query($link, "set datestyle = 'ISO, european'");
3207                                 pg_query($link, "set TIME ZONE 0");
3208                         } else {
3209                                 db_query($link, "SET time_zone = '+0:0'");
3210
3211                                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
3212                                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
3213                                 }
3214                         }
3215
3216                         global $pluginhost;
3217
3218                         $pluginhost = new PluginHost($link);
3219                         $pluginhost->load(PLUGINS, $pluginhost::KIND_ALL);
3220
3221                         return true;
3222                 } else {
3223                         print "Unable to connect to database:" . db_last_error();
3224                         return false;
3225                 }
3226         }
3227
3228         function format_tags_string($tags, $id) {
3229
3230                 $tags_str = "";
3231                 $tags_nolinks_str = "";
3232
3233                 $num_tags = 0;
3234
3235                 $tag_limit = 6;
3236
3237                 $formatted_tags = array();
3238
3239                 foreach ($tags as $tag) {
3240                         $num_tags++;
3241                         $tag_escaped = str_replace("'", "\\'", $tag);
3242
3243                         if (mb_strlen($tag) > 30) {
3244                                 $tag = truncate_string($tag, 30);
3245                         }
3246
3247                         $tag_str = "<a href=\"javascript:viewfeed('$tag_escaped')\">$tag</a>";
3248
3249                         array_push($formatted_tags, $tag_str);
3250
3251                         $tmp_tags_str = implode(", ", $formatted_tags);
3252
3253                         if ($num_tags == $tag_limit || mb_strlen($tmp_tags_str) > 150) {
3254                                 break;
3255                         }
3256                 }
3257
3258                 $tags_str = implode(", ", $formatted_tags);
3259
3260                 if ($num_tags < count($tags)) {
3261                         $tags_str .= ", &hellip;";
3262                 }
3263
3264                 if ($num_tags == 0) {
3265                         $tags_str = __("no tags");
3266                 }
3267
3268                 return $tags_str;
3269
3270         }
3271
3272         function format_article_labels($labels, $id) {
3273
3274                 $labels_str = "";
3275
3276                 foreach ($labels as $l) {
3277                         $labels_str .= sprintf("<span class='hlLabelRef'
3278                                 style='color : %s; background-color : %s'>%s</span>",
3279                                         $l[2], $l[3], $l[1]);
3280                         }
3281
3282                 return $labels_str;
3283
3284         }
3285
3286         function format_article_note($id, $note, $allow_edit = true) {
3287
3288                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
3289                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
3290                         ($allow_edit ? __('(edit note)') : "")."</div>$note</div>";
3291
3292                 return $str;
3293         }
3294
3295
3296         function get_feed_category($link, $feed_cat, $parent_cat_id = false) {
3297                 if ($parent_cat_id) {
3298                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3299                         $parent_insert = "'$parent_cat_id'";
3300                 } else {
3301                         $parent_qpart = "parent_cat IS NULL";
3302                         $parent_insert = "NULL";
3303                 }
3304
3305                 $result = db_query($link,
3306                         "SELECT id FROM ttrss_feed_categories
3307                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3308
3309                 if (db_num_rows($result) == 0) {
3310                         return false;
3311                 } else {
3312                         return db_fetch_result($result, 0, "id");
3313                 }
3314         }
3315
3316         function add_feed_category($link, $feed_cat, $parent_cat_id = false) {
3317
3318                 if (!$feed_cat) return false;
3319
3320                 db_query($link, "BEGIN");
3321
3322                 if ($parent_cat_id) {
3323                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3324                         $parent_insert = "'$parent_cat_id'";
3325                 } else {
3326                         $parent_qpart = "parent_cat IS NULL";
3327                         $parent_insert = "NULL";
3328                 }
3329
3330                 $result = db_query($link,
3331                         "SELECT id FROM ttrss_feed_categories
3332                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3333
3334                 if (db_num_rows($result) == 0) {
3335
3336                         $result = db_query($link,
3337                                 "INSERT INTO ttrss_feed_categories (owner_uid,title,parent_cat)
3338                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat', $parent_insert)");
3339
3340                         db_query($link, "COMMIT");
3341
3342                         return true;
3343                 }
3344
3345                 return false;
3346         }
3347
3348         function getArticleFeed($link, $id) {
3349                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3350                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3351
3352                 if (db_num_rows($result) != 0) {
3353                         return db_fetch_result($result, 0, "feed_id");
3354                 } else {
3355                         return 0;
3356                 }
3357         }
3358
3359         /**
3360          * Fixes incomplete URLs by prepending "http://".
3361          * Also replaces feed:// with http://, and
3362          * prepends a trailing slash if the url is a domain name only.
3363          *
3364          * @param string $url Possibly incomplete URL
3365          *
3366          * @return string Fixed URL.
3367          */
3368         function fix_url($url) {
3369                 if (strpos($url, '://') === false) {
3370                         $url = 'http://' . $url;
3371                 } else if (substr($url, 0, 5) == 'feed:') {
3372                         $url = 'http:' . substr($url, 5);
3373                 }
3374
3375                 //prepend slash if the URL has no slash in it
3376                 // "http://www.example" -> "http://www.example/"
3377                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
3378                         $url .= '/';
3379                 }
3380
3381                 if ($url != "http:///")
3382                         return $url;
3383                 else
3384                         return '';
3385         }
3386
3387         function validate_feed_url($url) {
3388                 $parts = parse_url($url);
3389
3390                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
3391
3392         }
3393
3394         function get_article_enclosures($link, $id) {
3395
3396                 $query = "SELECT * FROM ttrss_enclosures
3397                         WHERE post_id = '$id' AND content_url != ''";
3398
3399                 $rv = array();
3400
3401                 $result = db_query($link, $query);
3402
3403                 if (db_num_rows($result) > 0) {
3404                         while ($line = db_fetch_assoc($result)) {
3405                                 array_push($rv, $line);
3406                         }
3407                 }
3408
3409                 return $rv;
3410         }
3411
3412         function save_email_address($link, $email) {
3413                 // FIXME: implement persistent storage of emails
3414
3415                 if (!$_SESSION['stored_emails'])
3416                         $_SESSION['stored_emails'] = array();
3417
3418                 if (!in_array($email, $_SESSION['stored_emails']))
3419                         array_push($_SESSION['stored_emails'], $email);
3420         }
3421
3422
3423         function get_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
3424
3425                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3426
3427                 $sql_is_cat = bool_to_sql_bool($is_cat);
3428
3429                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
3430                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
3431                         AND owner_uid = " . $owner_uid);
3432
3433                 if (db_num_rows($result) == 1) {
3434                         return db_fetch_result($result, 0, "access_key");
3435                 } else {
3436                         $key = db_escape_string(sha1(uniqid(rand(), true)));
3437
3438                         $result = db_query($link, "INSERT INTO ttrss_access_keys
3439                                 (access_key, feed_id, is_cat, owner_uid)
3440                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
3441
3442                         return $key;
3443                 }
3444                 return false;
3445         }
3446
3447         function get_feeds_from_html($url, $content)
3448         {
3449                 $url     = fix_url($url);
3450                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
3451
3452                 libxml_use_internal_errors(true);
3453
3454                 $doc = new DOMDocument();
3455                 $doc->loadHTML($content);
3456                 $xpath = new DOMXPath($doc);
3457                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
3458                 $feedUrls = array();
3459                 foreach ($entries as $entry) {
3460                         if ($entry->hasAttribute('href')) {
3461                                 $title = $entry->getAttribute('title');
3462                                 if ($title == '') {
3463                                         $title = $entry->getAttribute('type');
3464                                 }
3465                                 $feedUrl = rewrite_relative_url(
3466                                         $baseUrl, $entry->getAttribute('href')
3467                                 );
3468                                 $feedUrls[$feedUrl] = $title;
3469                         }
3470                 }
3471                 return $feedUrls;
3472         }
3473
3474         function is_html($content) {
3475                 return preg_match("/<html|DOCTYPE html/i", substr($content, 0, 20)) !== 0;
3476         }
3477
3478         function url_is_html($url, $login = false, $pass = false) {
3479                 return is_html(fetch_file_contents($url, false, $login, $pass));
3480         }
3481
3482         function print_label_select($link, $name, $value, $attributes = "") {
3483
3484                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
3485                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
3486
3487                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
3488                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
3489
3490                 while ($line = db_fetch_assoc($result)) {
3491
3492                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
3493
3494                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
3495                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
3496
3497                 }
3498
3499 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
3500
3501                 print "</select>";
3502
3503
3504         }
3505
3506         function format_article_enclosures($link, $id, $always_display_enclosures,
3507                                         $article_content) {
3508
3509                 $result = get_article_enclosures($link, $id);
3510                 $rv = '';
3511
3512                 if (count($result) > 0) {
3513
3514                         $entries_html = array();
3515                         $entries = array();
3516                         $entries_inline = array();
3517
3518                         foreach ($result as $line) {
3519
3520                                 $url = $line["content_url"];
3521                                 $ctype = $line["content_type"];
3522
3523                                 if (!$ctype) $ctype = __("unknown type");
3524
3525                                 $filename = substr($url, strrpos($url, "/")+1);
3526
3527                                 $player = format_inline_player($link, $url, $ctype);
3528
3529                                 if ($player) array_push($entries_inline, $player);
3530
3531 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3532 #                                       $filename . " (" . $ctype . ")" . "</a>";
3533
3534                                 $entry = "<div onclick=\"window.open('".htmlspecialchars($url)."')\"
3535                                         dojoType=\"dijit.MenuItem\">$filename ($ctype)</div>";
3536
3537                                 array_push($entries_html, $entry);
3538
3539                                 $entry = array();
3540
3541                                 $entry["type"] = $ctype;
3542                                 $entry["filename"] = $filename;
3543                                 $entry["url"] = $url;
3544
3545                                 array_push($entries, $entry);
3546                         }
3547
3548                         if (!get_pref($link, "STRIP_IMAGES")) {
3549                                 if ($always_display_enclosures ||
3550                                                         !preg_match("/<img/i", $article_content)) {
3551
3552                                         foreach ($entries as $entry) {
3553
3554                                                 if (preg_match("/image/", $entry["type"]) ||
3555                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
3556
3557                                                                 $rv .= "<p><img
3558                                                                 alt=\"".htmlspecialchars($entry["filename"])."\"
3559                                                                 src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
3560
3561                                                 }
3562                                         }
3563                                 }
3564                         }
3565
3566                         if (count($entries_inline) > 0) {
3567                                 $rv .= "<hr clear='both'/>";
3568                                 foreach ($entries_inline as $entry) { $rv .= $entry; };
3569                                 $rv .= "<hr clear='both'/>";
3570                         }
3571
3572                         $rv .= "<br/><div dojoType=\"dijit.form.DropDownButton\">".
3573                                 "<span>" . __('Attachments')."</span>";
3574                         $rv .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3575
3576                         foreach ($entries_html as $entry) { $rv .= $entry; };
3577
3578                         $rv .= "</div></div>";
3579                 }
3580
3581                 return $rv;
3582         }
3583
3584         function getLastArticleId($link) {
3585                 $result = db_query($link, "SELECT MAX(ref_id) AS id FROM ttrss_user_entries
3586                         WHERE owner_uid = " . $_SESSION["uid"]);
3587
3588                 if (db_num_rows($result) == 1) {
3589                         return db_fetch_result($result, 0, "id");
3590                 } else {
3591                         return -1;
3592                 }
3593         }
3594
3595         function build_url($parts) {
3596                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
3597         }
3598
3599         /**
3600          * Converts a (possibly) relative URL to a absolute one.
3601          *
3602          * @param string $url     Base URL (i.e. from where the document is)
3603          * @param string $rel_url Possibly relative URL in the document
3604          *
3605          * @return string Absolute URL
3606          */
3607         function rewrite_relative_url($url, $rel_url) {
3608                 if (strpos($rel_url, "magnet:") === 0) {
3609                         return $rel_url;
3610                 } else if (strpos($rel_url, "://") !== false) {
3611                         return $rel_url;
3612                 } else if (strpos($rel_url, "//") === 0) {
3613                         # protocol-relative URL (rare but they exist)
3614                         return $rel_url;
3615                 } else if (strpos($rel_url, "/") === 0)
3616                 {
3617                         $parts = parse_url($url);
3618                         $parts['path'] = $rel_url;
3619
3620                         return build_url($parts);
3621
3622                 } else {
3623                         $parts = parse_url($url);
3624                         if (!isset($parts['path'])) {
3625                                 $parts['path'] = '/';
3626                         }
3627                         $dir = $parts['path'];
3628                         if (substr($dir, -1) !== '/') {
3629                                 $dir = dirname($parts['path']);
3630                                 $dir !== '/' && $dir .= '/';
3631                         }
3632                         $parts['path'] = $dir . $rel_url;
3633
3634                         return build_url($parts);
3635                 }
3636         }
3637
3638         function sphinx_search($query, $offset = 0, $limit = 30) {
3639                 require_once 'lib/sphinxapi.php';
3640
3641                 $sphinxClient = new SphinxClient();
3642
3643                 $sphinxClient->SetServer('localhost', 9312);
3644                 $sphinxClient->SetConnectTimeout(1);
3645
3646                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
3647                         'feed_title' => 20));
3648
3649                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
3650                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
3651                 $sphinxClient->SetLimits($offset, $limit, 1000);
3652                 $sphinxClient->SetArrayResult(false);
3653                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
3654
3655                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
3656
3657                 $ids = array();
3658
3659                 if (is_array($result['matches'])) {
3660                         foreach (array_keys($result['matches']) as $int_id) {
3661                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
3662                                 array_push($ids, $ref_id);
3663                         }
3664                 }
3665
3666                 return $ids;
3667         }
3668
3669         function cleanup_tags($link, $days = 14, $limit = 1000) {
3670
3671                 if (DB_TYPE == "pgsql") {
3672                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
3673                 } else if (DB_TYPE == "mysql") {
3674                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
3675                 }
3676
3677                 $tags_deleted = 0;
3678
3679                 while ($limit > 0) {
3680                         $limit_part = 500;
3681
3682                         $query = "SELECT ttrss_tags.id AS id
3683                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
3684                                 WHERE post_int_id = int_id AND $interval_query AND
3685                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
3686
3687                         $result = db_query($link, $query);
3688
3689                         $ids = array();
3690
3691                         while ($line = db_fetch_assoc($result)) {
3692                                 array_push($ids, $line['id']);
3693                         }
3694
3695                         if (count($ids) > 0) {
3696                                 $ids = join(",", $ids);
3697                                 print ".";
3698
3699                                 $tmp_result = db_query($link, "DELETE FROM ttrss_tags WHERE id IN ($ids)");
3700                                 $tags_deleted += db_affected_rows($link, $tmp_result);
3701                         } else {
3702                                 break;
3703                         }
3704
3705                         $limit -= $limit_part;
3706                 }
3707
3708                 print "\n";
3709
3710                 return $tags_deleted;
3711         }
3712
3713         function print_user_stylesheet($link) {
3714                 $value = get_pref($link, 'USER_STYLESHEET');
3715
3716                 if ($value) {
3717                         print "<style type=\"text/css\">";
3718                         print str_replace("<br/>", "\n", $value);
3719                         print "</style>";
3720                 }
3721
3722         }
3723
3724         function rewrite_urls($html) {
3725                 libxml_use_internal_errors(true);
3726
3727                 $charset_hack = '<head>
3728                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
3729                 </head>';
3730
3731                 $doc = new DOMDocument();
3732                 $doc->loadHTML($charset_hack . $html);
3733                 $xpath = new DOMXPath($doc);
3734
3735                 $entries = $xpath->query('//*/text()');
3736
3737                 foreach ($entries as $entry) {
3738                         if (strstr($entry->wholeText, "://") !== false) {
3739                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
3740                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
3741
3742                                 if ($text != $entry->wholeText) {
3743                                         $cdoc = new DOMDocument();
3744                                         $cdoc->loadHTML($charset_hack . $text);
3745
3746
3747                                         foreach ($cdoc->childNodes as $cnode) {
3748                                                 $cnode = $doc->importNode($cnode, true);
3749
3750                                                 if ($cnode) {
3751                                                         $entry->parentNode->insertBefore($cnode);
3752                                                 }
3753                                         }
3754
3755                                         $entry->parentNode->removeChild($entry);
3756
3757                                 }
3758                         }
3759                 }
3760
3761                 $node = $doc->getElementsByTagName('body')->item(0);
3762
3763                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
3764                 if ($node)
3765                         return $doc->saveXML($node);
3766                 else
3767                         return $html;
3768         }
3769
3770         function filter_to_sql($link, $filter, $owner_uid) {
3771                 $query = array();
3772
3773                 if (DB_TYPE == "pgsql")
3774                         $reg_qpart = "~";
3775                 else
3776                         $reg_qpart = "REGEXP";
3777
3778                 foreach ($filter["rules"] AS $rule) {
3779                         $regexp_valid = preg_match('/' . $rule['reg_exp'] . '/',
3780                                 $rule['reg_exp']) !== FALSE;
3781
3782                         if ($regexp_valid) {
3783
3784                                 $rule['reg_exp'] = db_escape_string($rule['reg_exp']);
3785
3786                                 switch ($rule["type"]) {
3787                                         case "title":
3788                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3789                                                         $rule['reg_exp'] . "')";
3790                                                 break;
3791                                         case "content":
3792                                                 $qpart = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
3793                                                         $rule['reg_exp'] . "')";
3794                                                 break;
3795                                         case "both":
3796                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3797                                                         $rule['reg_exp'] . "') OR LOWER(" .
3798                                                         "ttrss_entries.content) $reg_qpart LOWER('" . $rule['reg_exp'] . "')";
3799                                                 break;
3800                                         case "tag":
3801                                                 $qpart = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
3802                                                         $rule['reg_exp'] . "')";
3803                                                 break;
3804                                         case "link":
3805                                                 $qpart = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
3806                                                         $rule['reg_exp'] . "')";
3807                                                 break;
3808                                         case "author":
3809                                                 $qpart = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
3810                                                         $rule['reg_exp'] . "')";
3811                                                 break;
3812                                 }
3813
3814                                 if (isset($rule["feed_id"]) && $rule["feed_id"] > 0) {
3815                                         $qpart .= " AND feed_id = " . db_escape_string($rule["feed_id"]);
3816                                 }
3817
3818                                 if (isset($rule["cat_id"])) {
3819
3820                                         if ($rule["cat_id"] > 0) {
3821                                                 $children = getChildCategories($link, $rule["cat_id"], $owner_uid);
3822                                                 array_push($children, $rule["cat_id"]);
3823
3824                                                 $children = join(",", $children);
3825
3826                                                 $cat_qpart = "cat_id IN ($children)";
3827                                         } else {
3828                                                 $cat_qpart = "cat_id IS NULL";
3829                                         }
3830
3831                                         $qpart .= " AND $cat_qpart";
3832                                 }
3833
3834                                 array_push($query, "($qpart)");
3835
3836                         }
3837                 }
3838
3839                 if (count($query) > 0) {
3840                         return "(" . join($filter["match_any_rule"] ? "OR" : "AND", $query) . ")";
3841                 } else {
3842                         return "(false)";
3843                 }
3844         }
3845
3846         if (!function_exists('gzdecode')) {
3847                 function gzdecode($string) { // no support for 2nd argument
3848                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
3849                                 base64_encode($string));
3850                 }
3851         }
3852
3853         function get_random_bytes($length) {
3854                 if (function_exists('openssl_random_pseudo_bytes')) {
3855                         return openssl_random_pseudo_bytes($length);
3856                 } else {
3857                         $output = "";
3858
3859                         for ($i = 0; $i < $length; $i++)
3860                                 $output .= chr(mt_rand(0, 255));
3861
3862                         return $output;
3863                 }
3864         }
3865
3866         function read_stdin() {
3867                 $fp = fopen("php://stdin", "r");
3868
3869                 if ($fp) {
3870                         $line = trim(fgets($fp));
3871                         fclose($fp);
3872                         return $line;
3873                 }
3874
3875                 return null;
3876         }
3877
3878         function tmpdirname($path, $prefix) {
3879                 // Use PHP's tmpfile function to create a temporary
3880                 // directory name. Delete the file and keep the name.
3881                 $tempname = tempnam($path,$prefix);
3882                 if (!$tempname)
3883                         return false;
3884
3885                 if (!unlink($tempname))
3886                         return false;
3887
3888        return $tempname;
3889         }
3890
3891         function getFeedCategory($link, $feed) {
3892                 $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
3893                         WHERE id = '$feed'");
3894
3895                 if (db_num_rows($result) > 0) {
3896                         return db_fetch_result($result, 0, "cat_id");
3897                 } else {
3898                         return false;
3899                 }
3900
3901         }
3902
3903         function implements_interface($class, $interface) {
3904                 return in_array($interface, class_implements($class));
3905         }
3906
3907 ?>