include/functions.php

   1 <?php
   2         define('EXPECTED_CONFIG_VERSION', 26);
   3         define('SCHEMA_VERSION', 114);
   4
   5         define('LABEL_BASE_INDEX', -1024);
   6         define('PLUGIN_FEED_BASE_INDEX', -128);
   7
   8         $fetch_last_error = false;
   9         $fetch_last_error_code = false;
  10         $pluginhost = false;
  11
  12         function __autoload($class) {
  13                 $class_file = str_replace("_", "/", strtolower(basename($class)));
  14
  15                 $file = dirname(__FILE__)."/../classes/$class_file.php";
  16
  17                 if (file_exists($file)) {
  18                         require $file;
  19                 }
  20
  21         }
  22
  23         mb_internal_encoding("UTF-8");
  24         date_default_timezone_set('UTC');
  25         if (defined('E_DEPRECATED')) {
  26                 error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
  27         } else {
  28                 error_reporting(E_ALL & ~E_NOTICE);
  29         }
  30
  31         require_once 'config.php';
  32
  33         if (DB_TYPE == "pgsql") {
  34                 define('SUBSTRING_FOR_DATE', 'SUBSTRING_FOR_DATE');
  35         } else {
  36                 define('SUBSTRING_FOR_DATE', 'SUBSTRING');
  37         }
  38
  39         define('THEME_VERSION_REQUIRED', 1.1);
  40
  41         /**
  42          * Return available translations names.
  43          *
  44          * @access public
  45          * @return array A array of available translations.
  46          */
  47         function get_translations() {
  48                 $tr = array(
  49                                         "auto"  => "Detect automatically",
  50                                         "ca_CA" => "Català",
  51                                         "cs_CZ" => "Česky",
  52                                         "en_US" => "English",
  53                                         "es_ES" => "Español",
  54                                         "de_DE" => "Deutsch",
  55                                         "fr_FR" => "Français",
  56                                         "hu_HU" => "Magyar (Hungarian)",
  57                                         "it_IT" => "Italiano",
  58                                         "ja_JP" => "日本語 (Japanese)",
  59                                         "lv_LV" => "Latviešu",
  60                                         "nb_NO" => "Norwegian bokmål",
  61                                         "nl_NL" => "Dutch",
  62                                         "pl_PL" => "Polski",
  63                                         "ru_RU" => "Русский",
  64                                         "pt_BR" => "Portuguese/Brazil",
  65                                         "zh_CN" => "Simplified Chinese",
  66                                         "fi_FI" => "Suomi");
  67
  68                 return $tr;
  69         }
  70
  71         require_once "lib/accept-to-gettext.php";
  72         require_once "lib/gettext/gettext.inc";
  73
  74
  75         function startup_gettext() {
  76
  77                 # Get locale from Accept-Language header
  78                 $lang = al2gt(array_keys(get_translations()), "text/html");
  79
  80                 if (defined('_TRANSLATION_OVERRIDE_DEFAULT')) {
  81                         $lang = _TRANSLATION_OVERRIDE_DEFAULT;
  82                 }
  83
  84                 if ($_SESSION["language"] && $_SESSION["language"] != "auto") {
  85                         $lang = $_SESSION["language"];
  86                 }
  87
  88                 if ($lang) {
  89                         if (defined('LC_MESSAGES')) {
  90                                 _setlocale(LC_MESSAGES, $lang);
  91                         } else if (defined('LC_ALL')) {
  92                                 _setlocale(LC_ALL, $lang);
  93                         }
  94
  95                         _bindtextdomain("messages", "locale");
  96
  97                         _textdomain("messages");
  98                         _bind_textdomain_codeset("messages", "UTF-8");
  99                 }
 100         }
 101
 102         startup_gettext();
 103
 104         require_once 'db-prefs.php';
 105         require_once 'version.php';
 106         require_once 'ccache.php';
 107         require_once 'labels.php';
 108
 109         define('SELF_USER_AGENT', 'Tiny Tiny RSS/' . VERSION . ' (http://tt-rss.org/)');
 110         ini_set('user_agent', SELF_USER_AGENT);
 111
 112         require_once 'lib/pubsubhubbub/publisher.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                 $ts = strftime("%H:%M:%S", time());
 126                 if (function_exists('posix_getpid')) {
 127                         $ts = "$ts/" . posix_getpid();
 128                 }
 129
 130                 if (!(defined('QUIET') && QUIET)) {
 131                         print "[$ts] $msg\n";
 132                 }
 133
 134                 if (defined('LOGFILE'))  {
 135                         $fp = fopen(LOGFILE, 'a+');
 136
 137                         if ($fp) {
 138                                 fputs($fp, "[$ts] $msg\n");
 139                                 fclose($fp);
 140                         }
 141                 }
 142
 143         } // function _debug
 144
 145         /**
 146          * Purge a feed old posts.
 147          *
 148          * @param mixed $link A database connection.
 149          * @param mixed $feed_id The id of the purged feed.
 150          * @param mixed $purge_interval Olderness of purged posts.
 151          * @param boolean $debug Set to True to enable the debug. False by default.
 152          * @access public
 153          * @return void
 154          */
 155         function purge_feed($link, $feed_id, $purge_interval, $debug = false) {
 156
 157                 if (!$purge_interval) $purge_interval = feed_purge_interval($link, $feed_id);
 158
 159                 $rows = -1;
 160
 161                 $result = db_query($link,
 162                         "SELECT owner_uid FROM ttrss_feeds WHERE id = '$feed_id'");
 163
 164                 $owner_uid = false;
 165
 166                 if (db_num_rows($result) == 1) {
 167                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 168                 }
 169
 170                 if ($purge_interval == -1 || !$purge_interval) {
 171                         if ($owner_uid) {
 172                                 ccache_update($link, $feed_id, $owner_uid);
 173                         }
 174                         return;
 175                 }
 176
 177                 if (!$owner_uid) return;
 178
 179                 if (FORCE_ARTICLE_PURGE == 0) {
 180                         $purge_unread = get_pref($link, "PURGE_UNREAD_ARTICLES",
 181                                 $owner_uid, false);
 182                 } else {
 183                         $purge_unread = true;
 184                         $purge_interval = FORCE_ARTICLE_PURGE;
 185                 }
 186
 187                 if (!$purge_unread) $query_limit = " unread = false AND ";
 188
 189                 if (DB_TYPE == "pgsql") {
 190                         $pg_version = get_pgsql_version($link);
 191
 192                         if (preg_match("/^7\./", $pg_version) || preg_match("/^8\.0/", $pg_version)) {
 193
 194                                 $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 195                                         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                         } else {
 202
 203                                 $result = db_query($link, "DELETE FROM ttrss_user_entries
 204                                         USING ttrss_entries
 205                                         WHERE ttrss_entries.id = ref_id AND
 206                                         marked = false AND
 207                                         feed_id = '$feed_id' AND
 208                                         $query_limit
 209                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 210                         }
 211
 212                         $rows = pg_affected_rows($result);
 213
 214                 } else {
 215
 216 /*                      $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 217                                 marked = false AND feed_id = '$feed_id' AND
 218                                 (SELECT date_updated FROM ttrss_entries WHERE
 219                                         id = ref_id) < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)"); */
 220
 221                         $result = db_query($link, "DELETE FROM ttrss_user_entries
 222                                 USING ttrss_user_entries, ttrss_entries
 223                                 WHERE ttrss_entries.id = ref_id AND
 224                                 marked = false AND
 225                                 feed_id = '$feed_id' AND
 226                                 $query_limit
 227                                 ttrss_entries.date_updated < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)");
 228
 229                         $rows = mysql_affected_rows($link);
 230
 231                 }
 232
 233                 ccache_update($link, $feed_id, $owner_uid);
 234
 235                 if ($debug) {
 236                         _debug("Purged feed $feed_id ($purge_interval): deleted $rows articles");
 237                 }
 238
 239                 return $rows;
 240         } // function purge_feed
 241
 242         function feed_purge_interval($link, $feed_id) {
 243
 244                 $result = db_query($link, "SELECT purge_interval, owner_uid FROM ttrss_feeds
 245                         WHERE id = '$feed_id'");
 246
 247                 if (db_num_rows($result) == 1) {
 248                         $purge_interval = db_fetch_result($result, 0, "purge_interval");
 249                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 250
 251                         if ($purge_interval == 0) $purge_interval = get_pref($link,
 252                                 'PURGE_OLD_DAYS', $owner_uid);
 253
 254                         return $purge_interval;
 255
 256                 } else {
 257                         return -1;
 258                 }
 259         }
 260
 261         function purge_orphans($link, $do_output = false) {
 262
 263                 // purge orphaned posts in main content table
 264                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
 265                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
 266
 267                 if ($do_output) {
 268                         $rows = db_affected_rows($link, $result);
 269                         _debug("Purged $rows orphaned posts.");
 270                 }
 271         }
 272
 273         function get_feed_update_interval($link, $feed_id) {
 274                 $result = db_query($link, "SELECT owner_uid, update_interval FROM
 275                         ttrss_feeds WHERE id = '$feed_id'");
 276
 277                 if (db_num_rows($result) == 1) {
 278                         $update_interval = db_fetch_result($result, 0, "update_interval");
 279                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 280
 281                         if ($update_interval != 0) {
 282                                 return $update_interval;
 283                         } else {
 284                                 return get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $owner_uid, false);
 285                         }
 286
 287                 } else {
 288                         return -1;
 289                 }
 290         }
 291
 292         function fetch_file_contents($url, $type = false, $login = false, $pass = false, $post_query = false, $timeout = false, $timestamp = 0) {
 293
 294                 global $fetch_last_error;
 295                 global $fetch_last_error_code;
 296
 297                 if (function_exists('curl_init') && !ini_get("open_basedir")) {
 298
 299                         if (ini_get("safe_mode")) {
 300                                 $ch = curl_init(geturl($url));
 301                         } else {
 302                                 $ch = curl_init($url);
 303                         }
 304
 305                         if ($timestamp) {
 306                                 curl_setopt($ch, CURLOPT_HTTPHEADER,
 307                                         array("If-Modified-Since: ".gmdate('D, d M Y H:i:s \G\M\T', $timestamp)));
 308                         }
 309
 310                         curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout ? $timeout : 15);
 311                         curl_setopt($ch, CURLOPT_TIMEOUT, $timeout ? $timeout : 45);
 312                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, !ini_get("safe_mode"));
 313                         curl_setopt($ch, CURLOPT_MAXREDIRS, 20);
 314                         curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
 315                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 316                         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 317                         curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 318                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 319                         curl_setopt($ch, CURLOPT_ENCODING , "gzip");
 320                         curl_setopt($ch, CURLOPT_REFERER, $url);
 321
 322                         if ($post_query) {
 323                                 curl_setopt($ch, CURLOPT_POST, true);
 324                                 curl_setopt($ch, CURLOPT_POSTFIELDS, $post_query);
 325                         }
 326
 327                         if ($login && $pass)
 328                                 curl_setopt($ch, CURLOPT_USERPWD, "$login:$pass");
 329
 330                         $contents = @curl_exec($ch);
 331
 332                         if (curl_errno($ch) === 23 || curl_errno($ch) === 61) {
 333                                 curl_setopt($ch, CURLOPT_ENCODING, 'none');
 334                                 $contents = @curl_exec($ch);
 335                         }
 336
 337                         if ($contents === false) {
 338                                 $fetch_last_error = curl_errno($ch) . " " . curl_error($ch);
 339                                 curl_close($ch);
 340                                 return false;
 341                         }
 342
 343                         $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 344                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 345
 346                         $fetch_last_error_code = $http_code;
 347
 348                         if ($http_code != 200 || $type && strpos($content_type, "$type") === false) {
 349                                 if (curl_errno($ch) != 0) {
 350                                         $fetch_last_error = curl_errno($ch) . " " . curl_error($ch);
 351                                 } else {
 352                                         $fetch_last_error = "HTTP Code: $http_code";
 353                                 }
 354                                 curl_close($ch);
 355                                 return false;
 356                         }
 357
 358                         curl_close($ch);
 359
 360                         return $contents;
 361                 } else {
 362                         if ($login && $pass){
 363                                 $url_parts = array();
 364
 365                                 preg_match("/(^[^:]*):\/\/(.*)/", $url, $url_parts);
 366
 367                                 $pass = urlencode($pass);
 368
 369                                 if ($url_parts[1] && $url_parts[2]) {
 370                                         $url = $url_parts[1] . "://$login:$pass@" . $url_parts[2];
 371                                 }
 372                         }
 373
 374                         $data = @file_get_contents($url);
 375
 376                         @$gzdecoded = gzdecode($data);
 377                         if ($gzdecoded) $data = $gzdecoded;
 378
 379                         if (!$data && function_exists('error_get_last')) {
 380                                 $error = error_get_last();
 381                                 $fetch_last_error = $error["message"];
 382                         }
 383                         return $data;
 384                 }
 385
 386         }
 387
 388         /**
 389          * Try to determine the favicon URL for a feed.
 390          * adapted from wordpress favicon plugin by Jeff Minard (http://thecodepro.com/)
 391          * http://dev.wp-plugins.org/file/favatars/trunk/favatars.php
 392          *
 393          * @param string $url A feed or page URL
 394          * @access public
 395          * @return mixed The favicon URL, or false if none was found.
 396          */
 397         function get_favicon_url($url) {
 398
 399                 $favicon_url = false;
 400
 401                 if ($html = @fetch_file_contents($url)) {
 402
 403                         libxml_use_internal_errors(true);
 404
 405                         $doc = new DOMDocument();
 406                         $doc->loadHTML($html);
 407                         $xpath = new DOMXPath($doc);
 408
 409                         $base = $xpath->query('/html/head/base');
 410                         foreach ($base as $b) {
 411                                 $url = $b->getAttribute("href");
 412                                 break;
 413                         }
 414
 415                         $entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon"]');
 416                         if (count($entries) > 0) {
 417                                 foreach ($entries as $entry) {
 418                                         $favicon_url = rewrite_relative_url($url, $entry->getAttribute("href"));
 419                                         break;
 420                                 }
 421                         }
 422                 }
 423
 424                 if (!$favicon_url)
 425                         $favicon_url = rewrite_relative_url($url, "/favicon.ico");
 426
 427                 return $favicon_url;
 428         } // function get_favicon_url
 429
 430         function check_feed_favicon($site_url, $feed, $link) {
 431 #               print "FAVICON [$site_url]: $favicon_url\n";
 432
 433                 $icon_file = ICONS_DIR . "/$feed.ico";
 434
 435                 if (!file_exists($icon_file)) {
 436                         $favicon_url = get_favicon_url($site_url);
 437
 438                         if ($favicon_url) {
 439                                 // Limiting to "image" type misses those served with text/plain
 440                                 $contents = fetch_file_contents($favicon_url); // , "image");
 441
 442                                 if ($contents) {
 443                                         // Crude image type matching.
 444                                         // Patterns gleaned from the file(1) source code.
 445                                         if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
 446                                                 // 0       string  \000\000\001\000        MS Windows icon resource
 447                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
 448                                         }
 449                                         elseif (preg_match('/^GIF8/', $contents)) {
 450                                                 // 0       string          GIF8            GIF image data
 451                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
 452                                         }
 453                                         elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
 454                                                 // 0       string          \x89PNG\x0d\x0a\x1a\x0a         PNG image data
 455                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
 456                                         }
 457                                         elseif (preg_match('/^\xff\xd8/', $contents)) {
 458                                                 // 0       beshort         0xffd8          JPEG image data
 459                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
 460                                         }
 461                                         else {
 462                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
 463                                                 $contents = "";
 464                                         }
 465                                 }
 466
 467                                 if ($contents) {
 468                                         $fp = @fopen($icon_file, "w");
 469
 470                                         if ($fp) {
 471                                                 fwrite($fp, $contents);
 472                                                 fclose($fp);
 473                                                 chmod($icon_file, 0644);
 474                                         }
 475                                 }
 476                         }
 477                 }
 478         }
 479
 480         function print_select($id, $default, $values, $attributes = "") {
 481                 print "<select name=\"$id\" id=\"$id\" $attributes>";
 482                 foreach ($values as $v) {
 483                         if ($v == $default)
 484                                 $sel = "selected=\"1\"";
 485                          else
 486                                 $sel = "";
 487
 488                         $v = trim($v);
 489
 490                         print "<option value=\"$v\" $sel>$v</option>";
 491                 }
 492                 print "</select>";
 493         }
 494
 495         function print_select_hash($id, $default, $values, $attributes = "") {
 496                 print "<select name=\"$id\" id='$id' $attributes>";
 497                 foreach (array_keys($values) as $v) {
 498                         if ($v == $default)
 499                                 $sel = 'selected="selected"';
 500                          else
 501                                 $sel = "";
 502
 503                         $v = trim($v);
 504
 505                         print "<option $sel value=\"$v\">".$values[$v]."</option>";
 506                 }
 507
 508                 print "</select>";
 509         }
 510
 511         function print_radio($id, $default, $true_is, $values, $attributes = "") {
 512                 foreach ($values as $v) {
 513
 514                         if ($v == $default)
 515                                 $sel = "checked";
 516                          else
 517                                 $sel = "";
 518
 519                         if ($v == $true_is) {
 520                                 $sel .= " value=\"1\"";
 521                         } else {
 522                                 $sel .= " value=\"0\"";
 523                         }
 524
 525                         print "<input class=\"noborder\" dojoType=\"dijit.form.RadioButton\"
 526                                 type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 527
 528                 }
 529         }
 530
 531         function initialize_user_prefs($link, $uid, $profile = false) {
 532
 533                 $uid = db_escape_string($link, $uid);
 534
 535                 if (!$profile) {
 536                         $profile = "NULL";
 537                         $profile_qpart = "AND profile IS NULL";
 538                 } else {
 539                         $profile_qpart = "AND profile = '$profile'";
 540                 }
 541
 542                 if (get_schema_version($link) < 63) $profile_qpart = "";
 543
 544                 db_query($link, "BEGIN");
 545
 546                 $result = db_query($link, "SELECT pref_name,def_value FROM ttrss_prefs");
 547
 548                 $u_result = db_query($link, "SELECT pref_name
 549                         FROM ttrss_user_prefs WHERE owner_uid = '$uid' $profile_qpart");
 550
 551                 $active_prefs = array();
 552
 553                 while ($line = db_fetch_assoc($u_result)) {
 554                         array_push($active_prefs, $line["pref_name"]);
 555                 }
 556
 557                 while ($line = db_fetch_assoc($result)) {
 558                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 559 //                              print "adding " . $line["pref_name"] . "<br>";
 560
 561                                 $line["def_value"] = db_escape_string($link, $line["def_value"]);
 562                                 $line["pref_name"] = db_escape_string($link, $line["pref_name"]);
 563
 564                                 if (get_schema_version($link) < 63) {
 565                                         db_query($link, "INSERT INTO ttrss_user_prefs
 566                                                 (owner_uid,pref_name,value) VALUES
 567                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 568
 569                                 } else {
 570                                         db_query($link, "INSERT INTO ttrss_user_prefs
 571                                                 (owner_uid,pref_name,value, profile) VALUES
 572                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."', $profile)");
 573                                 }
 574
 575                         }
 576                 }
 577
 578                 db_query($link, "COMMIT");
 579
 580         }
 581
 582         function get_ssl_certificate_id() {
 583                 if ($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"]) {
 584                         return sha1($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"] .
 585                                 $_SERVER["REDIRECT_SSL_CLIENT_V_START"] .
 586                                 $_SERVER["REDIRECT_SSL_CLIENT_V_END"] .
 587                                 $_SERVER["REDIRECT_SSL_CLIENT_S_DN"]);
 588                 }
 589                 return "";
 590         }
 591
 592         function authenticate_user($link, $login, $password, $check_only = false) {
 593
 594                 if (!SINGLE_USER_MODE) {
 595                         $user_id = false;
 596
 597                         global $pluginhost;
 598                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_AUTH_USER) as $plugin) {
 599
 600                                 $user_id = (int) $plugin->authenticate($login, $password);
 601
 602                                 if ($user_id) {
 603                                         $_SESSION["auth_module"] = strtolower(get_class($plugin));
 604                                         break;
 605                                 }
 606                         }
 607
 608                         if ($user_id && !$check_only) {
 609                                 @session_start();
 610
 611                                 $_SESSION["uid"] = $user_id;
 612
 613                                 $result = db_query($link, "SELECT login,access_level,pwd_hash FROM ttrss_users
 614                                         WHERE id = '$user_id'");
 615
 616                                 $_SESSION["name"] = db_fetch_result($result, 0, "login");
 617                                 $_SESSION["access_level"] = db_fetch_result($result, 0, "access_level");
 618                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 619
 620                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 621                                         $_SESSION["uid"]);
 622
 623                                 $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 624                                 $_SESSION["user_agent"] = sha1($_SERVER['HTTP_USER_AGENT']);
 625                                 $_SESSION["pwd_hash"] = db_fetch_result($result, 0, "pwd_hash");
 626
 627                                 $_SESSION["last_version_check"] = time();
 628
 629                                 initialize_user_prefs($link, $_SESSION["uid"]);
 630
 631                                 return true;
 632                         }
 633
 634                         return false;
 635
 636                 } else {
 637
 638                         $_SESSION["uid"] = 1;
 639                         $_SESSION["name"] = "admin";
 640                         $_SESSION["access_level"] = 10;
 641
 642                         $_SESSION["hide_hello"] = true;
 643                         $_SESSION["hide_logout"] = true;
 644
 645                         $_SESSION["auth_module"] = false;
 646
 647                         if (!$_SESSION["csrf_token"]) {
 648                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 649                         }
 650
 651                         $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 652
 653                         initialize_user_prefs($link, $_SESSION["uid"]);
 654
 655                         return true;
 656                 }
 657         }
 658
 659         function make_password($length = 8) {
 660
 661                 $password = "";
 662                 $possible = "0123456789abcdfghjkmnpqrstvwxyzABCDFGHJKMNPQRSTVWXYZ";
 663
 664         $i = 0;
 665
 666                 while ($i < $length) {
 667                         $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 668
 669                         if (!strstr($password, $char)) {
 670                                 $password .= $char;
 671                                 $i++;
 672                         }
 673                 }
 674                 return $password;
 675         }
 676
 677         // this is called after user is created to initialize default feeds, labels
 678         // or whatever else
 679
 680         // user preferences are checked on every login, not here
 681
 682         function initialize_user($link, $uid) {
 683
 684                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 685                         values ('$uid', 'Tiny Tiny RSS: New Releases',
 686                         'http://tt-rss.org/releases.rss')");
 687
 688                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 689                         values ('$uid', 'Tiny Tiny RSS: Forum',
 690                                 'http://tt-rss.org/forum/rss.php')");
 691         }
 692
 693         function logout_user() {
 694                 session_destroy();
 695                 if (isset($_COOKIE[session_name()])) {
 696                    setcookie(session_name(), '', time()-42000, '/');
 697                 }
 698         }
 699
 700         function validate_csrf($csrf_token) {
 701                 return $csrf_token == $_SESSION['csrf_token'];
 702         }
 703
 704         function load_user_plugins($link, $owner_uid) {
 705                 if ($owner_uid) {
 706                         $plugins = get_pref($link, "_ENABLED_PLUGINS", $owner_uid);
 707
 708                         global $pluginhost;
 709                         $pluginhost->load($plugins, $pluginhost::KIND_USER, $owner_uid);
 710
 711                         if (get_schema_version($link) > 100) {
 712                                 $pluginhost->load_data();
 713                         }
 714                 }
 715         }
 716
 717         function login_sequence($link) {
 718                 $_SESSION["prefs_cache"] = false;
 719
 720                 if (SINGLE_USER_MODE) {
 721                         @session_start();
 722                         authenticate_user($link, "admin", null);
 723                         cache_prefs($link);
 724                         load_user_plugins($link, $_SESSION["uid"]);
 725                 } else {
 726                         if (!$_SESSION["uid"] || !validate_session($link)) {
 727
 728                                 if (AUTH_AUTO_LOGIN && authenticate_user($link, null, null)) {
 729                                     $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 730                                 } else {
 731                                          authenticate_user($link, null, null, true);
 732                                 }
 733
 734                                 if (!$_SESSION["uid"]) render_login_form($link);
 735
 736                         } else {
 737                                 /* bump login timestamp */
 738                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 739                                         $_SESSION["uid"]);
 740                                 $_SESSION["last_login_update"] = time();
 741                         }
 742
 743                         if ($_SESSION["uid"] && $_SESSION["language"] && SESSION_COOKIE_LIFETIME > 0) {
 744                                 setcookie("ttrss_lang", $_SESSION["language"],
 745                                         time() + SESSION_COOKIE_LIFETIME);
 746                         }
 747
 748                         if ($_SESSION["uid"]) {
 749                                 cache_prefs($link);
 750                                 load_user_plugins($link, $_SESSION["uid"]);
 751
 752                                 /* cleanup ccache */
 753
 754                                 db_query($link, "DELETE FROM ttrss_counters_cache WHERE owner_uid = ".
 755                                         $_SESSION["uid"] . " AND
 756                                                 (SELECT COUNT(id) FROM ttrss_feeds WHERE
 757                                                         ttrss_feeds.id = feed_id) = 0");
 758
 759                                 db_query($link, "DELETE FROM ttrss_cat_counters_cache WHERE owner_uid = ".
 760                                         $_SESSION["uid"] . " AND
 761                                                 (SELECT COUNT(id) FROM ttrss_feed_categories WHERE
 762                                                         ttrss_feed_categories.id = feed_id) = 0");
 763
 764                         }
 765
 766                 }
 767         }
 768
 769         function truncate_string($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 $str;
 774                 }
 775         }
 776
 777         function convert_timestamp($timestamp, $source_tz, $dest_tz) {
 778
 779                 try {
 780                         $source_tz = new DateTimeZone($source_tz);
 781                 } catch (Exception $e) {
 782                         $source_tz = new DateTimeZone('UTC');
 783                 }
 784
 785                 try {
 786                         $dest_tz = new DateTimeZone($dest_tz);
 787                 } catch (Exception $e) {
 788                         $dest_tz = new DateTimeZone('UTC');
 789                 }
 790
 791                 $dt = new DateTime(date('Y-m-d H:i:s', $timestamp), $source_tz);
 792                 return $dt->format('U') + $dest_tz->getOffset($dt);
 793         }
 794
 795         function make_local_datetime($link, $timestamp, $long, $owner_uid = false,
 796                                         $no_smart_dt = false) {
 797
 798                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 799                 if (!$timestamp) $timestamp = '1970-01-01 0:00';
 800
 801                 global $utc_tz;
 802                 global $tz_offset;
 803
 804                 # We store date in UTC internally
 805                 $dt = new DateTime($timestamp, $utc_tz);
 806
 807                 if ($tz_offset == -1) {
 808
 809                         $user_tz_string = get_pref($link, 'USER_TIMEZONE', $owner_uid);
 810
 811                         try {
 812                                 $user_tz = new DateTimeZone($user_tz_string);
 813                         } catch (Exception $e) {
 814                                 $user_tz = $utc_tz;
 815                         }
 816
 817                         $tz_offset = $user_tz->getOffset($dt);
 818                 }
 819
 820                 $user_timestamp = $dt->format('U') + $tz_offset;
 821
 822                 if (!$no_smart_dt) {
 823                         return smart_date_time($link, $user_timestamp,
 824                                 $tz_offset, $owner_uid);
 825                 } else {
 826                         if ($long)
 827                                 $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 828                         else
 829                                 $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 830
 831                         return date($format, $user_timestamp);
 832                 }
 833         }
 834
 835         function smart_date_time($link, $timestamp, $tz_offset = 0, $owner_uid = false) {
 836                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 837
 838                 if (date("Y.m.d", $timestamp) == date("Y.m.d", time() + $tz_offset)) {
 839                         return date("G:i", $timestamp);
 840                 } else if (date("Y", $timestamp) == date("Y", time() + $tz_offset)) {
 841                         $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 842                         return date($format, $timestamp);
 843                 } else {
 844                         $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 845                         return date($format, $timestamp);
 846                 }
 847         }
 848
 849         function sql_bool_to_bool($s) {
 850                 if ($s == "t" || $s == "1" || strtolower($s) == "true") {
 851                         return true;
 852                 } else {
 853                         return false;
 854                 }
 855         }
 856
 857         function bool_to_sql_bool($s) {
 858                 if ($s) {
 859                         return "true";
 860                 } else {
 861                         return "false";
 862                 }
 863         }
 864
 865         // Session caching removed due to causing wrong redirects to upgrade
 866         // script when get_schema_version() is called on an obsolete session
 867         // created on a previous schema version.
 868         function get_schema_version($link, $nocache = false) {
 869                 global $schema_version;
 870
 871                 if (!$schema_version) {
 872                         $result = db_query($link, "SELECT schema_version FROM ttrss_version");
 873                         $version = db_fetch_result($result, 0, "schema_version");
 874                         $schema_version = $version;
 875                         return $version;
 876                 } else {
 877                         return $schema_version;
 878                 }
 879         }
 880
 881         function sanity_check($link) {
 882                 require_once 'errors.php';
 883
 884                 $error_code = 0;
 885                 $schema_version = get_schema_version($link, true);
 886
 887                 if ($schema_version != SCHEMA_VERSION) {
 888                         $error_code = 5;
 889                 }
 890
 891                 if (DB_TYPE == "mysql") {
 892                         $result = db_query($link, "SELECT true", false);
 893                         if (db_num_rows($result) != 1) {
 894                                 $error_code = 10;
 895                         }
 896                 }
 897
 898                 if (db_escape_string($link, "testTEST") != "testTEST") {
 899                         $error_code = 12;
 900                 }
 901
 902                 return array("code" => $error_code, "message" => $ERRORS[$error_code]);
 903         }
 904
 905         function file_is_locked($filename) {
 906                 if (function_exists('flock')) {
 907                         $fp = @fopen(LOCK_DIRECTORY . "/$filename", "r");
 908                         if ($fp) {
 909                                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 910                                         flock($fp, LOCK_UN);
 911                                         fclose($fp);
 912                                         return false;
 913                                 }
 914                                 fclose($fp);
 915                                 return true;
 916                         } else {
 917                                 return false;
 918                         }
 919                 }
 920                 return true; // consider the file always locked and skip the test
 921         }
 922
 923         function make_lockfile($filename) {
 924                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
 925
 926                 if ($fp && flock($fp, LOCK_EX | LOCK_NB)) {
 927                         if (function_exists('posix_getpid')) {
 928                                 fwrite($fp, posix_getpid() . "\n");
 929                         }
 930                         return $fp;
 931                 } else {
 932                         return false;
 933                 }
 934         }
 935
 936         function make_stampfile($filename) {
 937                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
 938
 939                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 940                         fwrite($fp, time() . "\n");
 941                         flock($fp, LOCK_UN);
 942                         fclose($fp);
 943                         return true;
 944                 } else {
 945                         return false;
 946                 }
 947         }
 948
 949         function sql_random_function() {
 950                 if (DB_TYPE == "mysql") {
 951                         return "RAND()";
 952                 } else {
 953                         return "RANDOM()";
 954                 }
 955         }
 956
 957         function catchup_feed($link, $feed, $cat_view, $owner_uid = false, $max_id = false, $mode = 'all') {
 958
 959                         if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 960
 961                         //if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
 962
 963                         // Todo: all this interval stuff needs some generic generator function
 964
 965                         $date_qpart = "false";
 966
 967                         switch ($mode) {
 968                         case "1day":
 969                                 if (DB_TYPE == "pgsql") {
 970                                         $date_qpart = "date_entered < NOW() - INTERVAL '1 day' ";
 971                                 } else {
 972                                         $date_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 1 DAY) ";
 973                                 }
 974                                 break;
 975                         case "1week":
 976                                 if (DB_TYPE == "pgsql") {
 977                                         $date_qpart = "date_entered < NOW() - INTERVAL '1 week' ";
 978                                 } else {
 979                                         $date_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 1 WEEK) ";
 980                                 }
 981                                 break;
 982                         case "2weeks":
 983                                 if (DB_TYPE == "pgsql") {
 984                                         $date_qpart = "date_entered < NOW() - INTERVAL '2 week' ";
 985                                 } else {
 986                                         $date_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 2 WEEK) ";
 987                                 }
 988                                 break;
 989                         default:
 990                                 $date_qpart = "true";
 991                         }
 992
 993                         if (is_numeric($feed)) {
 994                                 if ($cat_view) {
 995
 996                                         if ($feed >= 0) {
 997
 998                                                 if ($feed > 0) {
 999                                                         $children = getChildCategories($link, $feed, $owner_uid);
1000                                                         array_push($children, $feed);
1001
1002                                                         $children = join(",", $children);
1003
1004                                                         $cat_qpart = "cat_id IN ($children)";
1005                                                 } else {
1006                                                         $cat_qpart = "cat_id IS NULL";
1007                                                 }
1008
1009                                                 db_query($link, "UPDATE ttrss_user_entries
1010                                                         SET unread = false, last_read = NOW() WHERE ref_id IN
1011                                                                 (SELECT id FROM
1012                                                                         (SELECT id FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id
1013                                                                                 AND owner_uid = $owner_uid AND unread = true AND feed_id IN
1014                                                                                         (SELECT id FROM ttrss_feeds WHERE $cat_qpart) AND $date_qpart) as tmp)");
1015
1016                                         } else if ($feed == -2) {
1017
1018                                                 db_query($link, "UPDATE ttrss_user_entries
1019                                                         SET unread = false,last_read = NOW() WHERE (SELECT COUNT(*)
1020                                                                 FROM ttrss_user_labels2 WHERE article_id = ref_id) > 0
1021                                                                 AND unread = true AND $date_qpart AND owner_uid = $owner_uid");
1022                                         }
1023
1024                                 } else if ($feed > 0) {
1025
1026                                         db_query($link, "UPDATE ttrss_user_entries
1027                                                 SET unread = false, last_read = NOW() WHERE ref_id IN
1028                                                         (SELECT id FROM
1029                                                                 (SELECT id FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id
1030                                                                         AND owner_uid = $owner_uid AND unread = true AND feed_id = $feed AND $date_qpart) as tmp)");
1031
1032                                 } else if ($feed < 0 && $feed > LABEL_BASE_INDEX) { // special, like starred
1033
1034                                         if ($feed == -1) {
1035                                                 db_query($link, "UPDATE ttrss_user_entries
1036                                                         SET unread = false, last_read = NOW() WHERE ref_id IN
1037                                                                 (SELECT id FROM
1038                                                                         (SELECT id FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id
1039                                                                                 AND owner_uid = $owner_uid AND unread = true AND marked = true AND $date_qpart) as tmp)");
1040                                         }
1041
1042                                         if ($feed == -2) {
1043                                                 db_query($link, "UPDATE ttrss_user_entries
1044                                                         SET unread = false, last_read = NOW() WHERE ref_id IN
1045                                                                 (SELECT id FROM
1046                                                                         (SELECT id FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id
1047                                                                                 AND owner_uid = $owner_uid AND unread = true AND published = true AND $date_qpart) as tmp)");
1048                                         }
1049
1050                                         if ($feed == -3) {
1051
1052                                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE");
1053
1054                                                 if (DB_TYPE == "pgsql") {
1055                                                         $match_part = "updated > NOW() - INTERVAL '$intl hour' ";
1056                                                 } else {
1057                                                         $match_part = "updated > DATE_SUB(NOW(),
1058                                                                 INTERVAL $intl HOUR) ";
1059                                                 }
1060
1061                                                 db_query($link, "UPDATE ttrss_user_entries
1062                                                         SET unread = false, last_read = NOW() WHERE ref_id IN
1063                                                                 (SELECT id FROM
1064                                                                         (SELECT id FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id
1065                                                                                 AND owner_uid = $owner_uid AND unread = true AND feed_id = $feed AND $date_qpart AND $match_part) as tmp)");
1066                                         }
1067
1068                                         if ($feed == -4) {
1069                                                 db_query($link, "UPDATE ttrss_user_entries
1070                                                         SET unread = false, last_read = NOW() WHERE ref_id IN
1071                                                                 (SELECT id FROM
1072                                                                         (SELECT id FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id
1073                                                                                 AND owner_uid = $owner_uid AND unread = true AND $date_qpart) as tmp)");
1074                                         }
1075
1076                                 } else if ($feed < LABEL_BASE_INDEX) { // label
1077
1078                                         $label_id = feed_to_label_id($feed);
1079
1080                                         db_query($link, "UPDATE ttrss_user_entries
1081                                                 SET unread = false, last_read = NOW() WHERE ref_id IN
1082                                                         (SELECT id FROM
1083                                                                 (SELECT ttrss_entries.id FROM ttrss_entries, ttrss_user_entries, ttrss_user_labels2 WHERE ref_id = id
1084                                                                         AND label_id = '$label_id' AND ref_id = article_id
1085                                                                         AND owner_uid = $owner_uid AND unread = true AND $date_qpart) as tmp)");
1086
1087                                 }
1088
1089                                 ccache_update($link, $feed, $owner_uid, $cat_view);
1090
1091                         } else { // tag
1092                                 db_query($link, "UPDATE ttrss_user_entries
1093                                         SET unread = false, last_read = NOW() WHERE ref_id IN
1094                                                 (SELECT id FROM
1095                                                         (SELECT ttrss_entries.id FROM ttrss_entries, ttrss_user_entries, ttrss_tags WHERE ref_id = ttrss_entries.id
1096                                                                 AND post_int_id = int_id AND tag_name = '$feed'
1097                                                                 AND ttrss_user_entries.owner_uid = $owner_uid AND unread = true AND $date_qpart) as tmp)");
1098
1099                         }
1100         }
1101
1102         function getAllCounters($link) {
1103                 $data = getGlobalCounters($link);
1104
1105                 $data = array_merge($data, getVirtCounters($link));
1106                 $data = array_merge($data, getLabelCounters($link));
1107                 $data = array_merge($data, getFeedCounters($link, $active_feed));
1108                 $data = array_merge($data, getCategoryCounters($link));
1109
1110                 return $data;
1111         }
1112
1113         function getCategoryTitle($link, $cat_id) {
1114
1115                 if ($cat_id == -1) {
1116                         return __("Special");
1117                 } else if ($cat_id == -2) {
1118                         return __("Labels");
1119                 } else {
1120
1121                         $result = db_query($link, "SELECT title FROM ttrss_feed_categories WHERE
1122                                 id = '$cat_id'");
1123
1124                         if (db_num_rows($result) == 1) {
1125                                 return db_fetch_result($result, 0, "title");
1126                         } else {
1127                                 return __("Uncategorized");
1128                         }
1129                 }
1130         }
1131
1132
1133         function getCategoryCounters($link) {
1134                 $ret_arr = array();
1135
1136                 /* Labels category */
1137
1138                 $cv = array("id" => -2, "kind" => "cat",
1139                         "counter" => getCategoryUnread($link, -2));
1140
1141                 array_push($ret_arr, $cv);
1142
1143                 $result = db_query($link, "SELECT id AS cat_id, value AS unread,
1144                         (SELECT COUNT(id) FROM ttrss_feed_categories AS c2
1145                                 WHERE c2.parent_cat = ttrss_feed_categories.id) AS num_children
1146                         FROM ttrss_feed_categories, ttrss_cat_counters_cache
1147                         WHERE ttrss_cat_counters_cache.feed_id = id AND
1148                         ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid AND
1149                         ttrss_feed_categories.owner_uid = " . $_SESSION["uid"]);
1150
1151                 while ($line = db_fetch_assoc($result)) {
1152                         $line["cat_id"] = (int) $line["cat_id"];
1153
1154                         if ($line["num_children"] > 0) {
1155                                 $child_counter = getCategoryChildrenUnread($link, $line["cat_id"], $_SESSION["uid"]);
1156                         } else {
1157                                 $child_counter = 0;
1158                         }
1159
1160                         $cv = array("id" => $line["cat_id"], "kind" => "cat",
1161                                 "counter" => $line["unread"] + $child_counter);
1162
1163                         array_push($ret_arr, $cv);
1164                 }
1165
1166                 /* Special case: NULL category doesn't actually exist in the DB */
1167
1168                 $cv = array("id" => 0, "kind" => "cat",
1169                         "counter" => (int) ccache_find($link, 0, $_SESSION["uid"], true));
1170
1171                 array_push($ret_arr, $cv);
1172
1173                 return $ret_arr;
1174         }
1175
1176         // only accepts real cats (>= 0)
1177         function getCategoryChildrenUnread($link, $cat, $owner_uid = false) {
1178                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1179
1180                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories WHERE parent_cat = '$cat'
1181                                 AND owner_uid = $owner_uid");
1182
1183                 $unread = 0;
1184
1185                 while ($line = db_fetch_assoc($result)) {
1186                         $unread += getCategoryUnread($link, $line["id"], $owner_uid);
1187                         $unread += getCategoryChildrenUnread($link, $line["id"], $owner_uid);
1188                 }
1189
1190                 return $unread;
1191         }
1192
1193         function getCategoryUnread($link, $cat, $owner_uid = false) {
1194
1195                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1196
1197                 if ($cat >= 0) {
1198
1199                         if ($cat != 0) {
1200                                 $cat_query = "cat_id = '$cat'";
1201                         } else {
1202                                 $cat_query = "cat_id IS NULL";
1203                         }
1204
1205                         $result = db_query($link, "SELECT id FROM ttrss_feeds WHERE $cat_query
1206                                         AND owner_uid = " . $owner_uid);
1207
1208                         $cat_feeds = array();
1209                         while ($line = db_fetch_assoc($result)) {
1210                                 array_push($cat_feeds, "feed_id = " . $line["id"]);
1211                         }
1212
1213                         if (count($cat_feeds) == 0) return 0;
1214
1215                         $match_part = implode(" OR ", $cat_feeds);
1216
1217                         $result = db_query($link, "SELECT COUNT(int_id) AS unread
1218                                 FROM ttrss_user_entries
1219                                 WHERE   unread = true AND ($match_part)
1220                                 AND owner_uid = " . $owner_uid);
1221
1222                         $unread = 0;
1223
1224                         # this needs to be rewritten
1225                         while ($line = db_fetch_assoc($result)) {
1226                                 $unread += $line["unread"];
1227                         }
1228
1229                         return $unread;
1230                 } else if ($cat == -1) {
1231                         return getFeedUnread($link, -1) + getFeedUnread($link, -2) + getFeedUnread($link, -3) + getFeedUnread($link, 0);
1232                 } else if ($cat == -2) {
1233
1234                         $result = db_query($link, "
1235                                 SELECT COUNT(unread) AS unread FROM
1236                                         ttrss_user_entries, ttrss_user_labels2
1237                                 WHERE article_id = ref_id AND unread = true
1238                                         AND ttrss_user_entries.owner_uid = '$owner_uid'");
1239
1240                         $unread = db_fetch_result($result, 0, "unread");
1241
1242                         return $unread;
1243
1244                 }
1245         }
1246
1247         function getFeedUnread($link, $feed, $is_cat = false) {
1248                 return getFeedArticles($link, $feed, $is_cat, true, $_SESSION["uid"]);
1249         }
1250
1251         function getLabelUnread($link, $label_id, $owner_uid = false) {
1252                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1253
1254                 $result = db_query($link, "SELECT COUNT(ref_id) AS unread FROM ttrss_user_entries, ttrss_user_labels2
1255                         WHERE owner_uid = '$owner_uid' AND unread = true AND label_id = '$label_id' AND article_id = ref_id");
1256
1257                 if (db_num_rows($result) != 0) {
1258                         return db_fetch_result($result, 0, "unread");
1259                 } else {
1260                         return 0;
1261                 }
1262         }
1263
1264         function getFeedArticles($link, $feed, $is_cat = false, $unread_only = false,
1265                 $owner_uid = false) {
1266
1267                 $n_feed = (int) $feed;
1268                 $need_entries = false;
1269
1270                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1271
1272                 if ($unread_only) {
1273                         $unread_qpart = "unread = true";
1274                 } else {
1275                         $unread_qpart = "true";
1276                 }
1277
1278                 if ($is_cat) {
1279                         return getCategoryUnread($link, $n_feed, $owner_uid);
1280                 } else if ($n_feed == -6) {
1281                         return 0;
1282                 } else if ($feed != "0" && $n_feed == 0) {
1283
1284                         $feed = db_escape_string($link, $feed);
1285
1286                         $result = db_query($link, "SELECT SUM((SELECT COUNT(int_id)
1287                                 FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1288                                         AND ref_id = id AND $unread_qpart)) AS count FROM ttrss_tags
1289                                 WHERE owner_uid = $owner_uid AND tag_name = '$feed'");
1290                         return db_fetch_result($result, 0, "count");
1291
1292                 } else if ($n_feed == -1) {
1293                         $match_part = "marked = true";
1294                 } else if ($n_feed == -2) {
1295                         $match_part = "published = true";
1296                 } else if ($n_feed == -3) {
1297                         $match_part = "unread = true AND score >= 0";
1298
1299                         $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
1300
1301                         if (DB_TYPE == "pgsql") {
1302                                 $match_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
1303                         } else {
1304                                 $match_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
1305                         }
1306
1307                         $need_entries = true;
1308
1309                 } else if ($n_feed == -4) {
1310                         $match_part = "true";
1311                 } else if ($n_feed >= 0) {
1312
1313                         if ($n_feed != 0) {
1314                                 $match_part = "feed_id = '$n_feed'";
1315                         } else {
1316                                 $match_part = "feed_id IS NULL";
1317                         }
1318
1319                 } else if ($feed < LABEL_BASE_INDEX) {
1320
1321                         $label_id = feed_to_label_id($feed);
1322
1323                         return getLabelUnread($link, $label_id, $owner_uid);
1324
1325                 }
1326
1327                 if ($match_part) {
1328
1329                         if ($need_entries) {
1330                                 $from_qpart = "ttrss_user_entries,ttrss_entries";
1331                                 $from_where = "ttrss_entries.id = ttrss_user_entries.ref_id AND";
1332                         } else {
1333                                 $from_qpart = "ttrss_user_entries";
1334                         }
1335
1336                         $query = "SELECT count(int_id) AS unread
1337                                 FROM $from_qpart WHERE
1338                                 $unread_qpart AND $from_where ($match_part) AND ttrss_user_entries.owner_uid = $owner_uid";
1339
1340                         //echo "[$feed/$query]\n";
1341
1342                         $result = db_query($link, $query);
1343
1344                 } else {
1345
1346                         $result = db_query($link, "SELECT COUNT(post_int_id) AS unread
1347                                 FROM ttrss_tags,ttrss_user_entries,ttrss_entries
1348                                 WHERE tag_name = '$feed' AND post_int_id = int_id AND ref_id = ttrss_entries.id
1349                                 AND $unread_qpart AND ttrss_tags.owner_uid = " . $owner_uid);
1350                 }
1351
1352                 $unread = db_fetch_result($result, 0, "unread");
1353
1354                 return $unread;
1355         }
1356
1357         function getGlobalUnread($link, $user_id = false) {
1358
1359                 if (!$user_id) {
1360                         $user_id = $_SESSION["uid"];
1361                 }
1362
1363                 $result = db_query($link, "SELECT SUM(value) AS c_id FROM ttrss_counters_cache
1364                         WHERE owner_uid = '$user_id' AND feed_id > 0");
1365
1366                 $c_id = db_fetch_result($result, 0, "c_id");
1367
1368                 return $c_id;
1369         }
1370
1371         function getGlobalCounters($link, $global_unread = -1) {
1372                 $ret_arr = array();
1373
1374                 if ($global_unread == -1) {
1375                         $global_unread = getGlobalUnread($link);
1376                 }
1377
1378                 $cv = array("id" => "global-unread",
1379                         "counter" => (int) $global_unread);
1380
1381                 array_push($ret_arr, $cv);
1382
1383                 $result = db_query($link, "SELECT COUNT(id) AS fn FROM
1384                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1385
1386                 $subscribed_feeds = db_fetch_result($result, 0, "fn");
1387
1388                 $cv = array("id" => "subscribed-feeds",
1389                         "counter" => (int) $subscribed_feeds);
1390
1391                 array_push($ret_arr, $cv);
1392
1393                 return $ret_arr;
1394         }
1395
1396         function getVirtCounters($link) {
1397
1398                 $ret_arr = array();
1399
1400                 for ($i = 0; $i >= -4; $i--) {
1401
1402                         $count = getFeedUnread($link, $i);
1403
1404                         $cv = array("id" => $i,
1405                                 "counter" => (int) $count);
1406
1407 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1408 //                              $cv["xmsg"] = getFeedArticles($link, $i)." ".__("total");
1409
1410                         array_push($ret_arr, $cv);
1411                 }
1412
1413                 global $pluginhost;
1414
1415                 if ($pluginhost) {
1416                         $feeds = $pluginhost->get_feeds(-1);
1417
1418                         if (is_array($feeds)) {
1419                                 foreach ($feeds as $feed) {
1420                                         $cv = array("id" => PluginHost::pfeed_to_feed_id($feed['id']),
1421                                                 "counter" => $feed['sender']->get_unread($feed['id']));
1422
1423                                         array_push($ret_arr, $cv);
1424                                 }
1425                         }
1426                 }
1427
1428                 return $ret_arr;
1429         }
1430
1431         function getLabelCounters($link, $descriptions = false) {
1432
1433                 $ret_arr = array();
1434
1435                 $owner_uid = $_SESSION["uid"];
1436
1437                 $result = db_query($link, "SELECT id,caption,COUNT(unread) AS unread
1438                         FROM ttrss_labels2 LEFT JOIN ttrss_user_labels2 ON
1439                                 (ttrss_labels2.id = label_id)
1440                                         LEFT JOIN ttrss_user_entries ON (ref_id = article_id AND unread = true)
1441                                 WHERE ttrss_labels2.owner_uid = $owner_uid GROUP BY ttrss_labels2.id,
1442                                         ttrss_labels2.caption");
1443
1444                 while ($line = db_fetch_assoc($result)) {
1445
1446                         $id = label_to_feed_id($line["id"]);
1447
1448                         $label_name = $line["caption"];
1449                         $count = $line["unread"];
1450
1451                         $cv = array("id" => $id,
1452                                 "counter" => (int) $count);
1453
1454                         if ($descriptions)
1455                                 $cv["description"] = $label_name;
1456
1457 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1458 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1459
1460                         array_push($ret_arr, $cv);
1461                 }
1462
1463                 return $ret_arr;
1464         }
1465
1466         function getFeedCounters($link, $active_feed = false) {
1467
1468                 $ret_arr = array();
1469
1470                 $query = "SELECT ttrss_feeds.id,
1471                                 ttrss_feeds.title,
1472                                 ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
1473                                 last_error, value AS count
1474                         FROM ttrss_feeds, ttrss_counters_cache
1475                         WHERE ttrss_feeds.owner_uid = ".$_SESSION["uid"]."
1476                                 AND ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid
1477                                 AND ttrss_counters_cache.feed_id = id";
1478
1479                 $result = db_query($link, $query);
1480                 $fctrs_modified = false;
1481
1482                 while ($line = db_fetch_assoc($result)) {
1483
1484                         $id = $line["id"];
1485                         $count = $line["count"];
1486                         $last_error = htmlspecialchars($line["last_error"]);
1487
1488                         $last_updated = make_local_datetime($link, $line['last_updated'], false);
1489
1490                         $has_img = feed_has_icon($id);
1491
1492                         if (date('Y') - date('Y', strtotime($line['last_updated'])) > 2)
1493                                 $last_updated = '';
1494
1495                         $cv = array("id" => $id,
1496                                 "updated" => $last_updated,
1497                                 "counter" => (int) $count,
1498                                 "has_img" => (int) $has_img);
1499
1500                         if ($last_error)
1501                                 $cv["error"] = $last_error;
1502
1503 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1504 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1505
1506                         if ($active_feed && $id == $active_feed)
1507                                 $cv["title"] = truncate_string($line["title"], 30);
1508
1509                         array_push($ret_arr, $cv);
1510
1511                 }
1512
1513                 return $ret_arr;
1514         }
1515
1516         function get_pgsql_version($link) {
1517                 $result = db_query($link, "SELECT version() AS version");
1518                 $version = explode(" ", db_fetch_result($result, 0, "version"));
1519                 return $version[1];
1520         }
1521
1522         /**
1523          * @return array (code => Status code, message => error message if available)
1524          *
1525          *                 0 - OK, Feed already exists
1526          *                 1 - OK, Feed added
1527          *                 2 - Invalid URL
1528          *                 3 - URL content is HTML, no feeds available
1529          *                 4 - URL content is HTML which contains multiple feeds.
1530          *                     Here you should call extractfeedurls in rpc-backend
1531          *                     to get all possible feeds.
1532          *                 5 - Couldn't download the URL content.
1533          */
1534         function subscribe_to_feed($link, $url, $cat_id = 0,
1535                         $auth_login = '', $auth_pass = '') {
1536
1537                 global $fetch_last_error;
1538
1539                 require_once "include/rssfuncs.php";
1540
1541                 $url = fix_url($url);
1542
1543                 if (!$url || !validate_feed_url($url)) return array("code" => 2);
1544
1545                 $contents = @fetch_file_contents($url, false, $auth_login, $auth_pass);
1546
1547                 if (!$contents) {
1548                         return array("code" => 5, "message" => $fetch_last_error);
1549                 }
1550
1551                 if (is_html($contents)) {
1552                         $feedUrls = get_feeds_from_html($url, $contents);
1553
1554                         if (count($feedUrls) == 0) {
1555                                 return array("code" => 3);
1556                         } else if (count($feedUrls) > 1) {
1557                                 return array("code" => 4, "feeds" => $feedUrls);
1558                         }
1559                         //use feed url as new URL
1560                         $url = key($feedUrls);
1561                 }
1562
1563                 if ($cat_id == "0" || !$cat_id) {
1564                         $cat_qpart = "NULL";
1565                 } else {
1566                         $cat_qpart = "'$cat_id'";
1567                 }
1568
1569                 $result = db_query($link,
1570                         "SELECT id FROM ttrss_feeds
1571                         WHERE feed_url = '$url' AND owner_uid = ".$_SESSION["uid"]);
1572
1573                 if (db_num_rows($result) == 0) {
1574                         $result = db_query($link,
1575                                 "INSERT INTO ttrss_feeds
1576                                         (owner_uid,feed_url,title,cat_id, auth_login,auth_pass,update_method)
1577                                 VALUES ('".$_SESSION["uid"]."', '$url',
1578                                 '[Unknown]', $cat_qpart, '$auth_login', '$auth_pass', 0)");
1579
1580                         $result = db_query($link,
1581                                 "SELECT id FROM ttrss_feeds WHERE feed_url = '$url'
1582                                         AND owner_uid = " . $_SESSION["uid"]);
1583
1584                         $feed_id = db_fetch_result($result, 0, "id");
1585
1586                         if ($feed_id) {
1587                                 update_rss_feed($link, $feed_id, true);
1588                         }
1589
1590                         return array("code" => 1);
1591                 } else {
1592                         return array("code" => 0);
1593                 }
1594         }
1595
1596         function print_feed_select($link, $id, $default_id = "",
1597                 $attributes = "", $include_all_feeds = true,
1598                 $root_id = false, $nest_level = 0) {
1599
1600                 if (!$root_id) {
1601                         print "<select id=\"$id\" name=\"$id\" $attributes>";
1602                         if ($include_all_feeds) {
1603                                 $is_selected = ("0" == $default_id) ? "selected=\"1\"" : "";
1604                                 print "<option $is_selected value=\"0\">".__('All feeds')."</option>";
1605                         }
1606                 }
1607
1608                 if (get_pref($link, 'ENABLE_FEED_CATS')) {
1609
1610                         if ($root_id)
1611                                 $parent_qpart = "parent_cat = '$root_id'";
1612                         else
1613                                 $parent_qpart = "parent_cat IS NULL";
1614
1615                         $result = db_query($link, "SELECT id,title,
1616                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1617                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1618                                 FROM ttrss_feed_categories
1619                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1620
1621                         while ($line = db_fetch_assoc($result)) {
1622
1623                                 for ($i = 0; $i < $nest_level; $i++)
1624                                         $line["title"] = " - " . $line["title"];
1625
1626                                 $is_selected = ("CAT:".$line["id"] == $default_id) ? "selected=\"1\"" : "";
1627
1628                                 printf("<option $is_selected value='CAT:%d'>%s</option>",
1629                                         $line["id"], htmlspecialchars($line["title"]));
1630
1631                                 if ($line["num_children"] > 0)
1632                                         print_feed_select($link, $id, $default_id, $attributes,
1633                                                 $include_all_feeds, $line["id"], $nest_level+1);
1634
1635                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1636                                         WHERE cat_id = '".$line["id"]."' AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1637
1638                                 while ($fline = db_fetch_assoc($feed_result)) {
1639                                         $is_selected = ($fline["id"] == $default_id) ? "selected=\"1\"" : "";
1640
1641                                         $fline["title"] = " + " . $fline["title"];
1642
1643                                         for ($i = 0; $i < $nest_level; $i++)
1644                                                 $fline["title"] = " - " . $fline["title"];
1645
1646                                         printf("<option $is_selected value='%d'>%s</option>",
1647                                                 $fline["id"], htmlspecialchars($fline["title"]));
1648                                 }
1649                         }
1650
1651                         if (!$root_id) {
1652                                 $is_selected = ($default_id == "CAT:0") ? "selected=\"1\"" : "";
1653
1654                                 printf("<option $is_selected value='CAT:0'>%s</option>",
1655                                         __("Uncategorized"));
1656
1657                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1658                                         WHERE cat_id IS NULL AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1659
1660                                 while ($fline = db_fetch_assoc($feed_result)) {
1661                                         $is_selected = ($fline["id"] == $default_id && !$default_is_cat) ? "selected=\"1\"" : "";
1662
1663                                         $fline["title"] = " + " . $fline["title"];
1664
1665                                         for ($i = 0; $i < $nest_level; $i++)
1666                                                 $fline["title"] = " - " . $fline["title"];
1667
1668                                         printf("<option $is_selected value='%d'>%s</option>",
1669                                                 $fline["id"], htmlspecialchars($fline["title"]));
1670                                 }
1671                         }
1672
1673                 } else {
1674                         $result = db_query($link, "SELECT id,title FROM ttrss_feeds
1675                                 WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
1676
1677                         while ($line = db_fetch_assoc($result)) {
1678
1679                                 $is_selected = ($line["id"] == $default_id) ? "selected=\"1\"" : "";
1680
1681                                 printf("<option $is_selected value='%d'>%s</option>",
1682                                         $line["id"], htmlspecialchars($line["title"]));
1683                         }
1684                 }
1685
1686                 if (!$root_id) {
1687                         print "</select>";
1688                 }
1689         }
1690
1691         function print_feed_cat_select($link, $id, $default_id,
1692                 $attributes, $include_all_cats = true, $root_id = false, $nest_level = 0) {
1693
1694                         if (!$root_id) {
1695                                         print "<select id=\"$id\" name=\"$id\" default=\"$default_id\" onchange=\"catSelectOnChange(this)\" $attributes>";
1696                         }
1697
1698                         if ($root_id)
1699                                 $parent_qpart = "parent_cat = '$root_id'";
1700                         else
1701                                 $parent_qpart = "parent_cat IS NULL";
1702
1703                         $result = db_query($link, "SELECT id,title,
1704                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1705                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1706                                 FROM ttrss_feed_categories
1707                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1708
1709                         while ($line = db_fetch_assoc($result)) {
1710                                 if ($line["id"] == $default_id) {
1711                                         $is_selected = "selected=\"1\"";
1712                                 } else {
1713                                         $is_selected = "";
1714                                 }
1715
1716                                 for ($i = 0; $i < $nest_level; $i++)
1717                                         $line["title"] = " - " . $line["title"];
1718
1719                                 if ($line["title"])
1720                                         printf("<option $is_selected value='%d'>%s</option>",
1721                                                 $line["id"], htmlspecialchars($line["title"]));
1722
1723                                 if ($line["num_children"] > 0)
1724                                         print_feed_cat_select($link, $id, $default_id, $attributes,
1725                                                 $include_all_cats, $line["id"], $nest_level+1);
1726                         }
1727
1728                         if (!$root_id) {
1729                                 if ($include_all_cats) {
1730                                         if (db_num_rows($result) > 0) {
1731                                                 print "<option disabled=\"1\">--------</option>";
1732                                         }
1733
1734                                         if ($default_id == 0) {
1735                                                 $is_selected = "selected=\"1\"";
1736                                         } else {
1737                                                 $is_selected = "";
1738                                         }
1739
1740                                         print "<option $is_selected value=\"0\">".__('Uncategorized')."</option>";
1741                                 }
1742                                 print "</select>";
1743                         }
1744                 }
1745
1746         function checkbox_to_sql_bool($val) {
1747                 return ($val == "on") ? "true" : "false";
1748         }
1749
1750         function getFeedCatTitle($link, $id) {
1751                 if ($id == -1) {
1752                         return __("Special");
1753                 } else if ($id < LABEL_BASE_INDEX) {
1754                         return __("Labels");
1755                 } else if ($id > 0) {
1756                         $result = db_query($link, "SELECT ttrss_feed_categories.title
1757                                 FROM ttrss_feeds, ttrss_feed_categories WHERE ttrss_feeds.id = '$id' AND
1758                                         cat_id = ttrss_feed_categories.id");
1759                         if (db_num_rows($result) == 1) {
1760                                 return db_fetch_result($result, 0, "title");
1761                         } else {
1762                                 return __("Uncategorized");
1763                         }
1764                 } else {
1765                         return "getFeedCatTitle($id) failed";
1766                 }
1767
1768         }
1769
1770         function getFeedIcon($id) {
1771                 switch ($id) {
1772                 case 0:
1773                         return "images/archive.png";
1774                         break;
1775                 case -1:
1776                         return "images/mark_set.svg";
1777                         break;
1778                 case -2:
1779                         return "images/pub_set.svg";
1780                         break;
1781                 case -3:
1782                         return "images/fresh.png";
1783                         break;
1784                 case -4:
1785                         return "images/tag.png";
1786                         break;
1787                 case -6:
1788                         return "images/recently_read.png";
1789                         break;
1790                 default:
1791                         if ($id < LABEL_BASE_INDEX) {
1792                                 return "images/label.png";
1793                         } else {
1794                                 if (file_exists(ICONS_DIR . "/$id.ico"))
1795                                         return ICONS_URL . "/$id.ico";
1796                         }
1797                         break;
1798                 }
1799         }
1800
1801         function getFeedTitle($link, $id, $cat = false) {
1802                 if ($cat) {
1803                         return getCategoryTitle($link, $id);
1804                 } else if ($id == -1) {
1805                         return __("Starred articles");
1806                 } else if ($id == -2) {
1807                         return __("Published articles");
1808                 } else if ($id == -3) {
1809                         return __("Fresh articles");
1810                 } else if ($id == -4) {
1811                         return __("All articles");
1812                 } else if ($id === 0 || $id === "0") {
1813                         return __("Archived articles");
1814                 } else if ($id == -6) {
1815                         return __("Recently read");
1816                 } else if ($id < LABEL_BASE_INDEX) {
1817                         $label_id = feed_to_label_id($id);
1818                         $result = db_query($link, "SELECT caption FROM ttrss_labels2 WHERE id = '$label_id'");
1819                         if (db_num_rows($result) == 1) {
1820                                 return db_fetch_result($result, 0, "caption");
1821                         } else {
1822                                 return "Unknown label ($label_id)";
1823                         }
1824
1825                 } else if (is_numeric($id) && $id > 0) {
1826                         $result = db_query($link, "SELECT title FROM ttrss_feeds WHERE id = '$id'");
1827                         if (db_num_rows($result) == 1) {
1828                                 return db_fetch_result($result, 0, "title");
1829                         } else {
1830                                 return "Unknown feed ($id)";
1831                         }
1832                 } else {
1833                         return $id;
1834                 }
1835         }
1836
1837         function make_init_params($link) {
1838                 $params = array();
1839
1840                 foreach (array("ON_CATCHUP_SHOW_NEXT_FEED", "HIDE_READ_FEEDS",
1841                         "ENABLE_FEED_CATS", "FEEDS_SORT_BY_UNREAD", "CONFIRM_FEED_CATCHUP",
1842                         "CDM_AUTO_CATCHUP", "FRESH_ARTICLE_MAX_AGE", "DEFAULT_ARTICLE_LIMIT",
1843                         "HIDE_READ_SHOWS_SPECIAL", "COMBINED_DISPLAY_MODE") as $param) {
1844
1845                                  $params[strtolower($param)] = (int) get_pref($link, $param);
1846                  }
1847
1848                 $params["icons_url"] = ICONS_URL;
1849                 $params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
1850                 $params["default_view_mode"] = get_pref($link, "_DEFAULT_VIEW_MODE");
1851                 $params["default_view_limit"] = (int) get_pref($link, "_DEFAULT_VIEW_LIMIT");
1852                 $params["default_view_order_by"] = get_pref($link, "_DEFAULT_VIEW_ORDER_BY");
1853                 $params["bw_limit"] = (int) $_SESSION["bw_limit"];
1854                 $params["label_base_index"] = (int) LABEL_BASE_INDEX;
1855
1856                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
1857                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1858
1859                 $max_feed_id = db_fetch_result($result, 0, "mid");
1860                 $num_feeds = db_fetch_result($result, 0, "nf");
1861
1862                 $params["max_feed_id"] = (int) $max_feed_id;
1863                 $params["num_feeds"] = (int) $num_feeds;
1864
1865                 $params["collapsed_feedlist"] = (int) get_pref($link, "_COLLAPSED_FEEDLIST");
1866                 $params["hotkeys"] = get_hotkeys_map($link);
1867
1868                 $params["csrf_token"] = $_SESSION["csrf_token"];
1869                 $params["widescreen"] = (int) $_COOKIE["ttrss_widescreen"];
1870
1871                 $params['simple_update'] = defined('SIMPLE_UPDATE_MODE') && SIMPLE_UPDATE_MODE;
1872
1873                 return $params;
1874         }
1875
1876         function get_hotkeys_info($link) {
1877                 $hotkeys = array(
1878                         __("Navigation") => array(
1879                                 "next_feed" => __("Open next feed"),
1880                                 "prev_feed" => __("Open previous feed"),
1881                                 "next_article" => __("Open next article"),
1882                                 "prev_article" => __("Open previous article"),
1883                                 "next_article_noscroll" => __("Open next article (don't scroll long articles)"),
1884                                 "prev_article_noscroll" => __("Open previous article (don't scroll long articles)"),
1885                                 "search_dialog" => __("Show search dialog")),
1886                         __("Article") => array(
1887                                 "toggle_mark" => __("Toggle starred"),
1888                                 "toggle_publ" => __("Toggle published"),
1889                                 "toggle_unread" => __("Toggle unread"),
1890                                 "edit_tags" => __("Edit tags"),
1891                                 "dismiss_selected" => __("Dismiss selected"),
1892                                 "dismiss_read" => __("Dismiss read"),
1893                                 "open_in_new_window" => __("Open in new window"),
1894                                 "catchup_below" => __("Mark below as read"),
1895                                 "catchup_above" => __("Mark above as read"),
1896                                 "article_scroll_down" => __("Scroll down"),
1897                                 "article_scroll_up" => __("Scroll up"),
1898                                 "select_article_cursor" => __("Select article under cursor"),
1899                                 "email_article" => __("Email article"),
1900                                 "close_article" => __("Close/collapse article"),
1901                                 "toggle_widescreen" => __("Toggle widescreen mode"),
1902                                 "toggle_embed_original" => __("Toggle embed original")),
1903                         __("Article selection") => array(
1904                                 "select_all" => __("Select all articles"),
1905                                 "select_unread" => __("Select unread"),
1906                                 "select_marked" => __("Select starred"),
1907                                 "select_published" => __("Select published"),
1908                                 "select_invert" => __("Invert selection"),
1909                                 "select_none" => __("Deselect everything")),
1910                         __("Feed") => array(
1911                                 "feed_refresh" => __("Refresh current feed"),
1912                                 "feed_unhide_read" => __("Un/hide read feeds"),
1913                                 "feed_subscribe" => __("Subscribe to feed"),
1914                                 "feed_edit" => __("Edit feed"),
1915                                 "feed_catchup" => __("Mark as read"),
1916                                 "feed_reverse" => __("Reverse headlines"),
1917                                 "feed_debug_update" => __("Debug feed update"),
1918                                 "catchup_all" => __("Mark all feeds as read"),
1919                                 "cat_toggle_collapse" => __("Un/collapse current category"),
1920                                 "toggle_combined_mode" => __("Toggle combined mode"),
1921                                 "toggle_cdm_expanded" => __("Toggle auto expand in combined mode")),
1922                         __("Go to") => array(
1923                                 "goto_all" => __("All articles"),
1924                                 "goto_fresh" => __("Fresh"),
1925                                 "goto_marked" => __("Starred"),
1926                                 "goto_published" => __("Published"),
1927                                 "goto_tagcloud" => __("Tag cloud"),
1928                                 "goto_prefs" => __("Preferences")),
1929                         __("Other") => array(
1930                                 "create_label" => __("Create label"),
1931                                 "create_filter" => __("Create filter"),
1932                                 "collapse_sidebar" => __("Un/collapse sidebar"),
1933                                 "help_dialog" => __("Show help dialog"))
1934                         );
1935
1936                 return $hotkeys;
1937         }
1938
1939         function get_hotkeys_map($link) {
1940                 $hotkeys = array(
1941 //                      "navigation" => array(
1942                                 "k" => "next_feed",
1943                                 "j" => "prev_feed",
1944                                 "n" => "next_article",
1945                                 "p" => "prev_article",
1946                                 "(38)|up" => "prev_article",
1947                                 "(40)|down" => "next_article",
1948 //                              "^(38)|Ctrl-up" => "prev_article_noscroll",
1949 //                              "^(40)|Ctrl-down" => "next_article_noscroll",
1950                                 "(191)|/" => "search_dialog",
1951 //                      "article" => array(
1952                                 "s" => "toggle_mark",
1953                                 "*s" => "toggle_publ",
1954                                 "u" => "toggle_unread",
1955                                 "*t" => "edit_tags",
1956                                 "*d" => "dismiss_selected",
1957                                 "*x" => "dismiss_read",
1958                                 "o" => "open_in_new_window",
1959                                 "c p" => "catchup_below",
1960                                 "c n" => "catchup_above",
1961                                 "*n" => "article_scroll_down",
1962                                 "*p" => "article_scroll_up",
1963                                 "*(38)|Shift+up" => "article_scroll_up",
1964                                 "*(40)|Shift+down" => "article_scroll_down",
1965                                 "a *w" => "toggle_widescreen",
1966                                 "a e" => "toggle_embed_original",
1967                                 "e" => "email_article",
1968                                 "a q" => "close_article",
1969 //                      "article_selection" => array(
1970                                 "a a" => "select_all",
1971                                 "a u" => "select_unread",
1972                                 "a *u" => "select_marked",
1973                                 "a p" => "select_published",
1974                                 "a i" => "select_invert",
1975                                 "a n" => "select_none",
1976 //                      "feed" => array(
1977                                 "f r" => "feed_refresh",
1978                                 "f a" => "feed_unhide_read",
1979                                 "f s" => "feed_subscribe",
1980                                 "f e" => "feed_edit",
1981                                 "f q" => "feed_catchup",
1982                                 "f x" => "feed_reverse",
1983                                 "f *d" => "feed_debug_update",
1984                                 "f *c" => "toggle_combined_mode",
1985                                 "f c" => "toggle_cdm_expanded",
1986                                 "*q" => "catchup_all",
1987                                 "x" => "cat_toggle_collapse",
1988 //                      "goto" => array(
1989                                 "g a" => "goto_all",
1990                                 "g f" => "goto_fresh",
1991                                 "g s" => "goto_marked",
1992                                 "g p" => "goto_published",
1993                                 "g t" => "goto_tagcloud",
1994                                 "g *p" => "goto_prefs",
1995 //                      "other" => array(
1996                                 "(9)|Tab" => "select_article_cursor", // tab
1997                                 "c l" => "create_label",
1998                                 "c f" => "create_filter",
1999                                 "c s" => "collapse_sidebar",
2000                                 "^(191)|Ctrl+/" => "help_dialog",
2001                         );
2002
2003                 if (get_pref($link, 'COMBINED_DISPLAY_MODE')) {
2004                         $hotkeys["^(38)|Ctrl-up"] = "prev_article_noscroll";
2005                         $hotkeys["^(40)|Ctrl-down"] = "next_article_noscroll";
2006                 }
2007
2008                 global $pluginhost;
2009                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_HOTKEY_MAP) as $plugin) {
2010                         $hotkeys = $plugin->hook_hotkey_map($hotkeys);
2011                 }
2012
2013                 $prefixes = array();
2014
2015                 foreach (array_keys($hotkeys) as $hotkey) {
2016                         $pair = explode(" ", $hotkey, 2);
2017
2018                         if (count($pair) > 1 && !in_array($pair[0], $prefixes)) {
2019                                 array_push($prefixes, $pair[0]);
2020                         }
2021                 }
2022
2023                 return array($prefixes, $hotkeys);
2024         }
2025
2026         function make_runtime_info($link) {
2027                 $data = array();
2028
2029                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2030                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2031
2032                 $max_feed_id = db_fetch_result($result, 0, "mid");
2033                 $num_feeds = db_fetch_result($result, 0, "nf");
2034
2035                 $data["max_feed_id"] = (int) $max_feed_id;
2036                 $data["num_feeds"] = (int) $num_feeds;
2037
2038                 $data['last_article_id'] = getLastArticleId($link);
2039                 $data['cdm_expanded'] = get_pref($link, 'CDM_EXPANDED');
2040
2041                 $data['dep_ts'] = calculate_dep_timestamp();
2042                 $data['reload_on_ts_change'] = !defined('_NO_RELOAD_ON_TS_CHANGE');
2043
2044                 if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
2045
2046                         $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
2047
2048                         if (time() - $_SESSION["daemon_stamp_check"] > 30) {
2049
2050                                 $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
2051
2052                                 if ($stamp) {
2053                                         $stamp_delta = time() - $stamp;
2054
2055                                         if ($stamp_delta > 1800) {
2056                                                 $stamp_check = 0;
2057                                         } else {
2058                                                 $stamp_check = 1;
2059                                                 $_SESSION["daemon_stamp_check"] = time();
2060                                         }
2061
2062                                         $data['daemon_stamp_ok'] = $stamp_check;
2063
2064                                         $stamp_fmt = date("Y.m.d, G:i", $stamp);
2065
2066                                         $data['daemon_stamp'] = $stamp_fmt;
2067                                 }
2068                         }
2069                 }
2070
2071                 if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
2072                                 $new_version_details = @check_for_update($link);
2073
2074                                 $data['new_version_available'] = (int) ($new_version_details != false);
2075
2076                                 $_SESSION["last_version_check"] = time();
2077                                 $_SESSION["version_data"] = $new_version_details;
2078                 }
2079
2080                 return $data;
2081         }
2082
2083         function search_to_sql($link, $search) {
2084
2085                 $search_query_part = "";
2086
2087                 $keywords = explode(" ", $search);
2088                 $query_keywords = array();
2089
2090                 foreach ($keywords as $k) {
2091                         if (strpos($k, "-") === 0) {
2092                                 $k = substr($k, 1);
2093                                 $not = "NOT";
2094                         } else {
2095                                 $not = "";
2096                         }
2097
2098                         $commandpair = explode(":", mb_strtolower($k), 2);
2099
2100                         if ($commandpair[0] == "note" && $commandpair[1]) {
2101
2102                                 if ($commandpair[1] == "true")
2103                                         array_push($query_keywords, "($not (note IS NOT NULL AND note != ''))");
2104                                 else
2105                                         array_push($query_keywords, "($not (note IS NULL OR note = ''))");
2106
2107                         } else if ($commandpair[0] == "star" && $commandpair[1]) {
2108
2109                                 if ($commandpair[1] == "true")
2110                                         array_push($query_keywords, "($not (marked = true))");
2111                                 else
2112                                         array_push($query_keywords, "($not (marked = false))");
2113
2114                         } else if ($commandpair[0] == "pub" && $commandpair[1]) {
2115
2116                                 if ($commandpair[1] == "true")
2117                                         array_push($query_keywords, "($not (published = true))");
2118                                 else
2119                                         array_push($query_keywords, "($not (published = false))");
2120
2121                         } else if (strpos($k, "@") === 0) {
2122
2123                                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $_SESSION['uid']);
2124                                 $orig_ts = strtotime(substr($k, 1));
2125                                 $k = date("Y-m-d", convert_timestamp($orig_ts, $user_tz_string, 'UTC'));
2126
2127                                 //$k = date("Y-m-d", strtotime(substr($k, 1)));
2128
2129                                 array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
2130                         } else {
2131                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2132                                                 OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2133                         }
2134                 }
2135
2136                 $search_query_part = implode("AND", $query_keywords);
2137
2138                 return $search_query_part;
2139         }
2140
2141         function getParentCategories($link, $cat, $owner_uid) {
2142                 $rv = array();
2143
2144                 $result = db_query($link, "SELECT parent_cat FROM ttrss_feed_categories
2145                         WHERE id = '$cat' AND parent_cat IS NOT NULL AND owner_uid = $owner_uid");
2146
2147                 while ($line = db_fetch_assoc($result)) {
2148                         array_push($rv, $line["parent_cat"]);
2149                         $rv = array_merge($rv, getParentCategories($link, $line["parent_cat"], $owner_uid));
2150                 }
2151
2152                 return $rv;
2153         }
2154
2155         function getChildCategories($link, $cat, $owner_uid) {
2156                 $rv = array();
2157
2158                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories
2159                         WHERE parent_cat = '$cat' AND owner_uid = $owner_uid");
2160
2161                 while ($line = db_fetch_assoc($result)) {
2162                         array_push($rv, $line["id"]);
2163                         $rv = array_merge($rv, getChildCategories($link, $line["id"], $owner_uid));
2164                 }
2165
2166                 return $rv;
2167         }
2168
2169         function queryFeedHeadlines($link, $feed, $limit, $view_mode, $cat_view, $search, $search_mode, $override_order = false, $offset = 0, $owner_uid = 0, $filter = false, $since_id = 0, $include_children = false, $ignore_vfeed_group = false) {
2170
2171                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2172
2173                 $ext_tables_part = "";
2174
2175                         if ($search) {
2176
2177                                 if (SPHINX_ENABLED) {
2178                                         $ids = join(",", @sphinx_search($search, 0, 500));
2179
2180                                         if ($ids)
2181                                                 $search_query_part = "ref_id IN ($ids) AND ";
2182                                         else
2183                                                 $search_query_part = "ref_id = -1 AND ";
2184
2185                                 } else {
2186                                         $search_query_part = search_to_sql($link, $search);
2187                                         $search_query_part .= " AND ";
2188                                 }
2189
2190                         } else {
2191                                 $search_query_part = "";
2192                         }
2193
2194                         if ($filter) {
2195
2196                                 if (DB_TYPE == "pgsql") {
2197                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '14 days' ";
2198                                 } else {
2199                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL 14 DAY) ";
2200                                 }
2201
2202                                 $override_order = "updated DESC";
2203
2204                                 $filter_query_part = filter_to_sql($link, $filter, $owner_uid);
2205
2206                                 // Try to check if SQL regexp implementation chokes on a valid regexp
2207                                 $result = db_query($link, "SELECT true AS true_val FROM ttrss_entries,
2208                                         ttrss_user_entries, ttrss_feeds, ttrss_feed_categories
2209                                         WHERE $filter_query_part LIMIT 1", false);
2210
2211                                 if ($result) {
2212                                         $test = db_fetch_result($result, 0, "true_val");
2213
2214                                         if (!$test) {
2215                                                 $filter_query_part = "false AND";
2216                                         } else {
2217                                                 $filter_query_part .= " AND";
2218                                         }
2219                                 } else {
2220                                         $filter_query_part = "false AND";
2221                                 }
2222
2223                         } else {
2224                                 $filter_query_part = "";
2225                         }
2226
2227                         if ($since_id) {
2228                                 $since_id_part = "ttrss_entries.id > $since_id AND ";
2229                         } else {
2230                                 $since_id_part = "";
2231                         }
2232
2233                         $view_query_part = "";
2234
2235                         if ($view_mode == "adaptive") {
2236                                 if ($search) {
2237                                         $view_query_part = " ";
2238                                 } else if ($feed != -1) {
2239
2240                                         $unread = getFeedUnread($link, $feed, $cat_view);
2241
2242                                         if ($cat_view && $feed > 0 && $include_children)
2243                                                 $unread += getCategoryChildrenUnread($link, $feed);
2244
2245                                         if ($unread > 0)
2246                                 $view_query_part = " unread = true AND ";
2247
2248                                 }
2249                         }
2250
2251                         if ($view_mode == "marked") {
2252                                 $view_query_part = " marked = true AND ";
2253                         }
2254
2255                         if ($view_mode == "has_note") {
2256                                 $view_query_part = " (note IS NOT NULL AND note != '') AND ";
2257                         }
2258
2259                         if ($view_mode == "published") {
2260                                 $view_query_part = " published = true AND ";
2261                         }
2262
2263                         if ($view_mode == "unread" && $feed != -6) {
2264                                 $view_query_part = " unread = true AND ";
2265                         }
2266
2267                         if ($limit > 0) {
2268                                 $limit_query_part = "LIMIT " . $limit;
2269                         }
2270
2271                         $allow_archived = false;
2272
2273                         $vfeed_query_part = "";
2274
2275                         // override query strategy and enable feed display when searching globally
2276                         if ($search && $search_mode == "all_feeds") {
2277                                 $query_strategy_part = "true";
2278                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2279                         /* tags */
2280                         } else if (!is_numeric($feed)) {
2281                                 $query_strategy_part = "true";
2282                                 $vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
2283                                         id = feed_id) as feed_title,";
2284                         } else if ($search && $search_mode == "this_cat") {
2285                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2286
2287                                 if ($feed > 0) {
2288                                         if ($include_children) {
2289                                                 $subcats = getChildCategories($link, $feed, $owner_uid);
2290                                                 array_push($subcats, $feed);
2291                                                 $cats_qpart = join(",", $subcats);
2292                                         } else {
2293                                                 $cats_qpart = $feed;
2294                                         }
2295
2296                                         $query_strategy_part = "ttrss_feeds.cat_id IN ($cats_qpart)";
2297
2298                                 } else {
2299                                         $query_strategy_part = "ttrss_feeds.cat_id IS NULL";
2300                                 }
2301
2302                         } else if ($feed > 0) {
2303
2304                                 if ($cat_view) {
2305
2306                                         if ($feed > 0) {
2307                                                 if ($include_children) {
2308                                                         # sub-cats
2309                                                         $subcats = getChildCategories($link, $feed, $owner_uid);
2310
2311                                                         array_push($subcats, $feed);
2312                                                         $query_strategy_part = "cat_id IN (".
2313                                                                         implode(",", $subcats).")";
2314
2315                                                 } else {
2316                                                         $query_strategy_part = "cat_id = '$feed'";
2317                                                 }
2318
2319                                         } else {
2320                                                 $query_strategy_part = "cat_id IS NULL";
2321                                         }
2322
2323                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2324
2325                                 } else {
2326                                         $query_strategy_part = "feed_id = '$feed'";
2327                                 }
2328                         } else if ($feed == 0 && !$cat_view) { // archive virtual feed
2329                                 $query_strategy_part = "feed_id IS NULL";
2330                                 $allow_archived = true;
2331                         } else if ($feed == 0 && $cat_view) { // uncategorized
2332                                 $query_strategy_part = "cat_id IS NULL AND feed_id IS NOT NULL";
2333                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2334                         } else if ($feed == -1) { // starred virtual feed
2335                                 $query_strategy_part = "marked = true";
2336                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2337                                 $allow_archived = true;
2338
2339                                 if (!$override_order) {
2340                                         $override_order = "last_marked DESC, date_entered DESC, updated DESC";
2341                                 }
2342
2343                         } else if ($feed == -2) { // published virtual feed OR labels category
2344
2345                                 if (!$cat_view) {
2346                                         $query_strategy_part = "published = true";
2347                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2348                                         $allow_archived = true;
2349
2350                                         if (!$override_order) {
2351                                                 $override_order = "last_published DESC, date_entered DESC, updated DESC";
2352                                         }
2353
2354                                 } else {
2355                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2356
2357                                         $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2358
2359                                         $query_strategy_part = "ttrss_labels2.id = ttrss_user_labels2.label_id AND
2360                                                 ttrss_user_labels2.article_id = ref_id";
2361
2362                                 }
2363                         } else if ($feed == -6) { // recently read
2364                                 $query_strategy_part = "unread = false AND last_read IS NOT NULL";
2365                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2366                                 $allow_archived = true;
2367
2368                                 if (!$override_order) $override_order = "last_read DESC";
2369                         } else if ($feed == -3) { // fresh virtual feed
2370                                 $query_strategy_part = "unread = true AND score >= 0";
2371
2372                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
2373
2374                                 if (DB_TYPE == "pgsql") {
2375                                         $query_strategy_part .= " AND date_entered > NOW() - INTERVAL '$intl hour' ";
2376                                 } else {
2377                                         $query_strategy_part .= " AND date_entered > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
2378                                 }
2379
2380                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2381                         } else if ($feed == -4) { // all articles virtual feed
2382                                 $query_strategy_part = "true";
2383                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2384                         } else if ($feed <= LABEL_BASE_INDEX) { // labels
2385                                 $label_id = feed_to_label_id($feed);
2386
2387                                 $query_strategy_part = "label_id = '$label_id' AND
2388                                         ttrss_labels2.id = ttrss_user_labels2.label_id AND
2389                                         ttrss_user_labels2.article_id = ref_id";
2390
2391                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2392                                 $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2393                                 $allow_archived = true;
2394
2395                         } else {
2396                                 $query_strategy_part = "true";
2397                         }
2398
2399                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
2400                                 $date_sort_field = "updated";
2401                         } else {
2402                                 $date_sort_field = "date_entered";
2403                         }
2404
2405                         $order_by = "$date_sort_field DESC, updated DESC";
2406
2407                         if ($view_mode == "unread_first") {
2408                                 $order_by = "unread DESC, $order_by";
2409                         }
2410
2411                         if ($override_order) {
2412                                 $order_by = $override_order;
2413                         }
2414
2415                         $feed_title = "";
2416
2417                         if ($search) {
2418                                 $feed_title = T_sprintf("Search results: %s", $search);
2419                         } else {
2420                                 if ($cat_view) {
2421                                         $feed_title = getCategoryTitle($link, $feed);
2422                                 } else {
2423                                         if (is_numeric($feed) && $feed > 0) {
2424                                                 $result = db_query($link, "SELECT title,site_url,last_error
2425                                                         FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = $owner_uid");
2426
2427                                                 $feed_title = db_fetch_result($result, 0, "title");
2428                                                 $feed_site_url = db_fetch_result($result, 0, "site_url");
2429                                                 $last_error = db_fetch_result($result, 0, "last_error");
2430                                         } else {
2431                                                 $feed_title = getFeedTitle($link, $feed);
2432                                         }
2433                                 }
2434                         }
2435
2436                         $content_query_part = "content as content_preview, cached_content, ";
2437
2438                         if (is_numeric($feed)) {
2439
2440                                 if ($feed >= 0) {
2441                                         $feed_kind = "Feeds";
2442                                 } else {
2443                                         $feed_kind = "Labels";
2444                                 }
2445
2446                                 if ($limit_query_part) {
2447                                         $offset_query_part = "OFFSET $offset";
2448                                 }
2449
2450                                 // proper override_order applied above
2451                                 if ($vfeed_query_part && !$ignore_vfeed_group && get_pref($link, 'VFEED_GROUP_BY_FEED', $owner_uid)) {
2452                                         if (!$override_order) {
2453                                                 $order_by = "ttrss_feeds.title, $order_by";
2454                                         } else {
2455                                                 $order_by = "ttrss_feeds.title, $override_order";
2456                                         }
2457                                 }
2458
2459                                 if (!$allow_archived) {
2460                                         $from_qpart = "ttrss_entries,ttrss_user_entries,ttrss_feeds$ext_tables_part";
2461                                         $feed_check_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
2462
2463                                 } else {
2464                                         $from_qpart = "ttrss_entries$ext_tables_part,ttrss_user_entries
2465                                                 LEFT JOIN ttrss_feeds ON (feed_id = ttrss_feeds.id)";
2466                                 }
2467
2468                                 $query = "SELECT DISTINCT
2469                                                 date_entered,
2470                                                 guid,
2471                                                 ttrss_entries.id,ttrss_entries.title,
2472                                                 updated,
2473                                                 label_cache,
2474                                                 tag_cache,
2475                                                 always_display_enclosures,
2476                                                 site_url,
2477                                                 note,
2478                                                 num_comments,
2479                                                 comments,
2480                                                 int_id,
2481                                                 hide_images,
2482                                                 unread,feed_id,marked,published,link,last_read,orig_feed_id,
2483                                                 last_marked, last_published,
2484                                                 $vfeed_query_part
2485                                                 $content_query_part
2486                                                 author,score
2487                                         FROM
2488                                                 $from_qpart
2489                                         WHERE
2490                                         $feed_check_qpart
2491                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
2492                                         ttrss_user_entries.owner_uid = '$owner_uid' AND
2493                                         $search_query_part
2494                                         $filter_query_part
2495                                         $view_query_part
2496                                         $since_id_part
2497                                         $query_strategy_part ORDER BY $order_by
2498                                         $limit_query_part $offset_query_part";
2499
2500                                 if ($_REQUEST["debug"]) print $query;
2501
2502                                 $result = db_query($link, $query);
2503
2504                         } else {
2505                                 // browsing by tag
2506
2507                                 $select_qpart = "SELECT DISTINCT " .
2508                                                                 "date_entered," .
2509                                                                 "guid," .
2510                                                                 "note," .
2511                                                                 "ttrss_entries.id as id," .
2512                                                                 "title," .
2513                                                                 "updated," .
2514                                                                 "unread," .
2515                                                                 "feed_id," .
2516                                                                 "orig_feed_id," .
2517                                                                 "marked," .
2518                                                                 "num_comments, " .
2519                                                                 "comments, " .
2520                                                                 "tag_cache," .
2521                                                                 "label_cache," .
2522                                                                 "link," .
2523                                                                 "last_read," .
2524                                                                 "(SELECT hide_images FROM ttrss_feeds WHERE id = feed_id) AS hide_images," .
2525                                                                 "last_marked, last_published, " .
2526                                                                 $since_id_part .
2527                                                                 $vfeed_query_part .
2528                                                                 $content_query_part .
2529                                                                 "score ";
2530
2531                                 $feed_kind = "Tags";
2532                                 $all_tags = explode(",", $feed);
2533                                 if ($search_mode == 'any') {
2534                                         $tag_sql = "tag_name in (" . implode(", ", array_map("db_quote", $all_tags)) . ")";
2535                                         $from_qpart = " FROM ttrss_entries,ttrss_user_entries,ttrss_tags ";
2536                                         $where_qpart = " WHERE " .
2537                                                                    "ref_id = ttrss_entries.id AND " .
2538                                                                    "ttrss_user_entries.owner_uid = $owner_uid AND " .
2539                                                                    "post_int_id = int_id AND $tag_sql AND " .
2540                                                                    $view_query_part .
2541                                                                    $search_query_part .
2542                                                                    $query_strategy_part . " ORDER BY $order_by " .
2543                                                                    $limit_query_part;
2544
2545                                 } else {
2546                                         $i = 1;
2547                                         $sub_selects = array();
2548                                         $sub_ands = array();
2549                                         foreach ($all_tags as $term) {
2550                                                 array_push($sub_selects, "(SELECT post_int_id from ttrss_tags WHERE tag_name = " . db_quote($term) . " AND owner_uid = $owner_uid) as A$i");
2551                                                 $i++;
2552                                         }
2553                                         if ($i > 2) {
2554                                                 $x = 1;
2555                                                 $y = 2;
2556                                                 do {
2557                                                         array_push($sub_ands, "A$x.post_int_id = A$y.post_int_id");
2558                                                         $x++;
2559                                                         $y++;
2560                                                 } while ($y < $i);
2561                                         }
2562                                         array_push($sub_ands, "A1.post_int_id = ttrss_user_entries.int_id and ttrss_user_entries.owner_uid = $owner_uid");
2563                                         array_push($sub_ands, "ttrss_user_entries.ref_id = ttrss_entries.id");
2564                                         $from_qpart = " FROM " . implode(", ", $sub_selects) . ", ttrss_user_entries, ttrss_entries";
2565                                         $where_qpart = " WHERE " . implode(" AND ", $sub_ands);
2566                                 }
2567                                 //                              error_log("TAG SQL: " . $tag_sql);
2568                                 // $tag_sql = "tag_name = '$feed'";   DEFAULT way
2569
2570                                 //                              error_log("[". $select_qpart . "][" . $from_qpart . "][" .$where_qpart . "]");
2571                                 $result = db_query($link, $select_qpart . $from_qpart . $where_qpart);
2572                         }
2573
2574                         return array($result, $feed_title, $feed_site_url, $last_error);
2575
2576         }
2577
2578         function sanitize($link, $str, $force_remove_images = false, $owner = false, $site_url = false) {
2579                 if (!$owner) $owner = $_SESSION["uid"];
2580
2581                 $res = trim($str); if (!$res) return '';
2582
2583                 if (strpos($res, "href=") === false)
2584                         $res = rewrite_urls($res);
2585
2586                 $charset_hack = '<head>
2587                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
2588                 </head>';
2589
2590                 $res = trim($res); if (!$res) return '';
2591
2592                 libxml_use_internal_errors(true);
2593
2594                 $doc = new DOMDocument();
2595                 $doc->loadHTML($charset_hack . $res);
2596                 $xpath = new DOMXPath($doc);
2597
2598                 $entries = $xpath->query('(//a[@href]|//img[@src])');
2599
2600                 foreach ($entries as $entry) {
2601
2602                         if ($site_url) {
2603
2604                                 if ($entry->hasAttribute('href'))
2605                                         $entry->setAttribute('href',
2606                                                 rewrite_relative_url($site_url, $entry->getAttribute('href')));
2607
2608                                 if ($entry->hasAttribute('src')) {
2609                                         $src = rewrite_relative_url($site_url, $entry->getAttribute('src'));
2610
2611                                         $cached_filename = CACHE_DIR . '/images/' . sha1($src) . '.png';
2612
2613                                         if (file_exists($cached_filename)) {
2614                                                 $src = SELF_URL_PATH . '/image.php?hash=' . sha1($src);
2615                                         }
2616
2617                                         $entry->setAttribute('src', $src);
2618                                 }
2619
2620                                 if ($entry->nodeName == 'img') {
2621                                         if (($owner && get_pref($link, "STRIP_IMAGES", $owner)) ||
2622                                                         $force_remove_images || $_SESSION["bw_limit"]) {
2623
2624                                                 $p = $doc->createElement('p');
2625
2626                                                 $a = $doc->createElement('a');
2627                                                 $a->setAttribute('href', $entry->getAttribute('src'));
2628
2629                                                 $a->appendChild(new DOMText($entry->getAttribute('src')));
2630                                                 $a->setAttribute('target', '_blank');
2631
2632                                                 $p->appendChild($a);
2633
2634                                                 $entry->parentNode->replaceChild($p, $entry);
2635                                         }
2636                                 }
2637                         }
2638
2639                         if (strtolower($entry->nodeName) == "a") {
2640                                 $entry->setAttribute("target", "_blank");
2641                         }
2642                 }
2643
2644                 $entries = $xpath->query('//iframe');
2645                 foreach ($entries as $entry) {
2646                         $entry->setAttribute('sandbox', 'allow-scripts');
2647
2648                 }
2649
2650                 $allowed_elements = array('a', 'address', 'audio', 'article',
2651                         'b', 'big', 'blockquote', 'body', 'br', 'cite', 'center',
2652                         'code', 'dd', 'del', 'details', 'div', 'dl', 'font',
2653                         'dt', 'em', 'footer', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6',
2654                         'header', 'html', 'i', 'img', 'ins', 'kbd',
2655                         'li', 'nav', 'noscript', 'ol', 'p', 'pre', 'q', 's','small',
2656                         'source', 'span', 'strike', 'strong', 'sub', 'summary',
2657                         'sup', 'table', 'tbody', 'td', 'tfoot', 'th', 'thead',
2658                         'tr', 'track', 'tt', 'u', 'ul', 'var', 'wbr', 'video' );
2659
2660                 if ($_SESSION['hasSandbox']) $allowed_elements[] = 'iframe';
2661
2662                 $disallowed_attributes = array('id', 'style', 'class');
2663
2664                 global $pluginhost;
2665
2666                 if (isset($pluginhost)) {
2667                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_SANITIZE) as $plugin) {
2668                                 $retval = $plugin->hook_sanitize($doc, $site_url, $allowed_elements, $disallowed_attributes);
2669                                 if (is_array($retval)) {
2670                                         $doc = $retval[0];
2671                                         $allowed_elements = $retval[1];
2672                                         $disallowed_attributes = $retval[2];
2673                                 } else {
2674                                         $doc = $retval;
2675                                 }
2676                         }
2677                 }
2678
2679                 $doc->removeChild($doc->firstChild); //remove doctype
2680                 $doc = strip_harmful_tags($doc, $allowed_elements, $disallowed_attributes);
2681                 $res = $doc->saveHTML();
2682                 return $res;
2683         }
2684
2685         function strip_harmful_tags($doc, $allowed_elements, $disallowed_attributes) {
2686                 $entries = $doc->getElementsByTagName("*");
2687
2688                 foreach ($entries as $entry) {
2689                         if (!in_array($entry->nodeName, $allowed_elements)) {
2690                                 $entry->parentNode->removeChild($entry);
2691                         }
2692
2693                         if ($entry->hasAttributes()) {
2694                                 $attrs_to_remove = array();
2695
2696                                 foreach ($entry->attributes as $attr) {
2697
2698                                         if (strpos($attr->nodeName, 'on') === 0) {
2699                                                 array_push($attrs_to_remove, $attr);
2700                                         }
2701
2702                                         if (in_array($attr->nodeName, $disallowed_attributes)) {
2703                                                 array_push($attrs_to_remove, $attr);
2704                                         }
2705                                 }
2706
2707                                 foreach ($attrs_to_remove as $attr) {
2708                                         $entry->removeAttributeNode($attr);
2709                                 }
2710                         }
2711                 }
2712
2713                 return $doc;
2714         }
2715
2716         function check_for_update($link) {
2717                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2718                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION .
2719                                 "&iid=" . sha1(SELF_URL_PATH);
2720
2721                         $version_data = @fetch_file_contents($version_url);
2722
2723                         if ($version_data) {
2724                                 $version_data = json_decode($version_data, true);
2725                                 if ($version_data && $version_data['version']) {
2726
2727                                         if (version_compare(VERSION, $version_data['version']) == -1) {
2728                                                 return $version_data;
2729                                         }
2730                                 }
2731                         }
2732                 }
2733                 return false;
2734         }
2735
2736         function catchupArticlesById($link, $ids, $cmode, $owner_uid = false) {
2737
2738                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2739                 if (count($ids) == 0) return;
2740
2741                 $tmp_ids = array();
2742
2743                 foreach ($ids as $id) {
2744                         array_push($tmp_ids, "ref_id = '$id'");
2745                 }
2746
2747                 $ids_qpart = join(" OR ", $tmp_ids);
2748
2749                 if ($cmode == 0) {
2750                         db_query($link, "UPDATE ttrss_user_entries SET
2751                         unread = false,last_read = NOW()
2752                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2753                 } else if ($cmode == 1) {
2754                         db_query($link, "UPDATE ttrss_user_entries SET
2755                         unread = true
2756                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2757                 } else {
2758                         db_query($link, "UPDATE ttrss_user_entries SET
2759                         unread = NOT unread,last_read = NOW()
2760                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2761                 }
2762
2763                 /* update ccache */
2764
2765                 $result = db_query($link, "SELECT DISTINCT feed_id FROM ttrss_user_entries
2766                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2767
2768                 while ($line = db_fetch_assoc($result)) {
2769                         ccache_update($link, $line["feed_id"], $owner_uid);
2770                 }
2771         }
2772
2773         function get_article_tags($link, $id, $owner_uid = 0, $tag_cache = false) {
2774
2775                 $a_id = db_escape_string($link, $id);
2776
2777                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2778
2779                 $query = "SELECT DISTINCT tag_name,
2780                         owner_uid as owner FROM
2781                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
2782                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
2783
2784                 $obj_id = md5("TAGS:$owner_uid:$id");
2785                 $tags = array();
2786
2787                 /* check cache first */
2788
2789                 if ($tag_cache === false) {
2790                         $result = db_query($link, "SELECT tag_cache FROM ttrss_user_entries
2791                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2792
2793                         $tag_cache = db_fetch_result($result, 0, "tag_cache");
2794                 }
2795
2796                 if ($tag_cache) {
2797                         $tags = explode(",", $tag_cache);
2798                 } else {
2799
2800                         /* do it the hard way */
2801
2802                         $tmp_result = db_query($link, $query);
2803
2804                         while ($tmp_line = db_fetch_assoc($tmp_result)) {
2805                                 array_push($tags, $tmp_line["tag_name"]);
2806                         }
2807
2808                         /* update the cache */
2809
2810                         $tags_str = db_escape_string($link, join(",", $tags));
2811
2812                         db_query($link, "UPDATE ttrss_user_entries
2813                                 SET tag_cache = '$tags_str' WHERE ref_id = '$id'
2814                                 AND owner_uid = $owner_uid");
2815                 }
2816
2817                 return $tags;
2818         }
2819
2820         function trim_array($array) {
2821                 $tmp = $array;
2822                 array_walk($tmp, 'trim');
2823                 return $tmp;
2824         }
2825
2826         function tag_is_valid($tag) {
2827                 if ($tag == '') return false;
2828                 if (preg_match("/^[0-9]*$/", $tag)) return false;
2829                 if (mb_strlen($tag) > 250) return false;
2830
2831                 if (function_exists('iconv')) {
2832                         $tag = iconv("utf-8", "utf-8", $tag);
2833                 }
2834
2835                 if (!$tag) return false;
2836
2837                 return true;
2838         }
2839
2840         function render_login_form($link) {
2841                 require_once "login_form.php";
2842                 exit;
2843         }
2844
2845         // from http://developer.apple.com/internet/safari/faq.html
2846         function no_cache_incantation() {
2847                 header("Expires: Mon, 22 Dec 1980 00:00:00 GMT"); // Happy birthday to me :)
2848                 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
2849                 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); // HTTP/1.1
2850                 header("Cache-Control: post-check=0, pre-check=0", false);
2851                 header("Pragma: no-cache"); // HTTP/1.0
2852         }
2853
2854         function format_warning($msg, $id = "") {
2855                 global $link;
2856                 return "<div class=\"warning\" id=\"$id\">
2857                         <img src=\"images/sign_excl.svg\"><div class='inner'>$msg</div></div>";
2858         }
2859
2860         function format_notice($msg, $id = "") {
2861                 global $link;
2862                 return "<div class=\"notice\" id=\"$id\">
2863                         <img src=\"images/sign_info.svg\"><div class='inner'>$msg</div></div>";
2864         }
2865
2866         function format_error($msg, $id = "") {
2867                 global $link;
2868                 return "<div class=\"error\" id=\"$id\">
2869                         <img src=\"images/sign_excl.svg\"><div class='inner'>$msg</div></div>";
2870         }
2871
2872         function print_notice($msg) {
2873                 return print format_notice($msg);
2874         }
2875
2876         function print_warning($msg) {
2877                 return print format_warning($msg);
2878         }
2879
2880         function print_error($msg) {
2881                 return print format_error($msg);
2882         }
2883
2884
2885         function T_sprintf() {
2886                 $args = func_get_args();
2887                 return vsprintf(__(array_shift($args)), $args);
2888         }
2889
2890         function format_inline_player($link, $url, $ctype) {
2891
2892                 $entry = "";
2893
2894                 $url = htmlspecialchars($url);
2895
2896                 if (strpos($ctype, "audio/") === 0) {
2897
2898                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
2899                                 strpos($_SERVER['HTTP_USER_AGENT'], "Chrome") !== false ||
2900                                 strpos($_SERVER['HTTP_USER_AGENT'], "Safari") !== false )) {
2901
2902                                 $id = 'AUDIO-' . uniqid();
2903
2904                                 $entry .= "<audio id=\"$id\"\" controls style='display : none'>
2905                                         <source type=\"$ctype\" src=\"$url\"></source>
2906                                         </audio>";
2907
2908                                 $entry .= "<span onclick=\"player(this)\"
2909                                         title=\"".__("Click to play")."\" status=\"0\"
2910                                         class=\"player\" audio-id=\"$id\">".__("Play")."</span>";
2911
2912                         } else {
2913
2914                                 $entry .= "<object type=\"application/x-shockwave-flash\"
2915                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
2916                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
2917                                         <param name=\"movie\"
2918                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
2919                                         </object>";
2920                         }
2921
2922                         if ($entry) $entry .= "&nbsp; <a target=\"_blank\"
2923                                 href=\"$url\">" . basename($url) . "</a>";
2924
2925                         return $entry;
2926
2927                 }
2928
2929                 return "";
2930
2931 /*              $filename = substr($url, strrpos($url, "/")+1);
2932
2933                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
2934                         $filename . " (" . $ctype . ")" . "</a>"; */
2935
2936         }
2937
2938         function format_article($link, $id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
2939                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2940
2941                 $rv = array();
2942
2943                 $rv['id'] = $id;
2944
2945                 /* we can figure out feed_id from article id anyway, why do we
2946                  * pass feed_id here? let's ignore the argument :( */
2947
2948                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
2949                         WHERE ref_id = '$id'");
2950
2951                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
2952
2953                 $rv['feed_id'] = $feed_id;
2954
2955                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
2956
2957                 if ($mark_as_read) {
2958                         $result = db_query($link, "UPDATE ttrss_user_entries
2959                                 SET unread = false,last_read = NOW()
2960                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2961
2962                         ccache_update($link, $feed_id, $owner_uid);
2963                 }
2964
2965                 $result = db_query($link, "SELECT id,title,link,content,feed_id,comments,int_id,
2966                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
2967                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
2968                         (SELECT hide_images FROM ttrss_feeds WHERE id = feed_id) as hide_images,
2969                         num_comments,
2970                         tag_cache,
2971                         author,
2972                         orig_feed_id,
2973                         note,
2974                         cached_content
2975                         FROM ttrss_entries,ttrss_user_entries
2976                         WHERE   id = '$id' AND ref_id = id AND owner_uid = $owner_uid");
2977
2978                 if ($result) {
2979
2980                         $line = db_fetch_assoc($result);
2981
2982                         $tag_cache = $line["tag_cache"];
2983
2984                         $line["tags"] = get_article_tags($link, $id, $owner_uid, $line["tag_cache"]);
2985                         unset($line["tag_cache"]);
2986
2987                         $line["content"] = sanitize($link, $line["content"], false, $owner_uid, $line["site_url"]);
2988
2989                         global $pluginhost;
2990
2991                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_RENDER_ARTICLE) as $p) {
2992                                 $line = $p->hook_render_article($line);
2993                         }
2994
2995                         $num_comments = $line["num_comments"];
2996                         $entry_comments = "";
2997
2998                         if ($num_comments > 0) {
2999                                 if ($line["comments"]) {
3000                                         $comments_url = htmlspecialchars($line["comments"]);
3001                                 } else {
3002                                         $comments_url = htmlspecialchars($line["link"]);
3003                                 }
3004                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
3005                         } else {
3006                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
3007                                         $entry_comments = "<a target='_blank' href=\"".htmlspecialchars($line["comments"])."\">comments</a>";
3008                                 }
3009                         }
3010
3011                         if ($zoom_mode) {
3012                                 header("Content-Type: text/html");
3013                                 $rv['content'] .= "<html><head>
3014                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
3015                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
3016                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
3017                                         </head><body id=\"ttrssZoom\">";
3018                         }
3019
3020                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
3021
3022                         $rv['content'] .= "<div class=\"postHeader\" id=\"POSTHDR-$id\">";
3023
3024                         $entry_author = $line["author"];
3025
3026                         if ($entry_author) {
3027                                 $entry_author = __(" - ") . $entry_author;
3028                         }
3029
3030                         $parsed_updated = make_local_datetime($link, $line["updated"], true,
3031                                 $owner_uid, true);
3032
3033                         $rv['content'] .= "<div class=\"postDate\">$parsed_updated</div>";
3034
3035                         if ($line["link"]) {
3036                                 $rv['content'] .= "<div class='postTitle'><a target='_blank'
3037                                         title=\"".htmlspecialchars($line['title'])."\"
3038                                         href=\"" .
3039                                         htmlspecialchars($line["link"]) . "\">" .
3040                                         $line["title"] . "</a>" .
3041                                         "<span class='author'>$entry_author</span></div>";
3042                         } else {
3043                                 $rv['content'] .= "<div class='postTitle'>" . $line["title"] . "$entry_author</div>";
3044                         }
3045
3046                         $tags_str = format_tags_string($line["tags"], $id);
3047                         $tags_str_full = join(", ", $line["tags"]);
3048
3049                         if (!$tags_str_full) $tags_str_full = __("no tags");
3050
3051                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
3052
3053                         $rv['content'] .= "<div class='postTags' style='float : right'>
3054                                 <img src='images/tag.png'
3055                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
3056
3057                         if (!$zoom_mode) {
3058                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
3059                                         <a title=\"".__('Edit tags for this article')."\"
3060                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
3061
3062                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
3063                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
3064                                         position=\"below\">$tags_str_full</div>";
3065
3066                                 global $pluginhost;
3067
3068                                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_ARTICLE_BUTTON) as $p) {
3069                                         $rv['content'] .= $p->hook_article_button($line);
3070                                 }
3071
3072
3073                         } else {
3074                                 $tags_str = strip_tags($tags_str);
3075                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
3076                         }
3077                         $rv['content'] .= "</div>";
3078                         $rv['content'] .= "<div clear='both'>$entry_comments</div>";
3079
3080                         if ($line["orig_feed_id"]) {
3081
3082                                 $tmp_result = db_query($link, "SELECT * FROM ttrss_archived_feeds
3083                                         WHERE id = ".$line["orig_feed_id"]);
3084
3085                                 if (db_num_rows($tmp_result) != 0) {
3086
3087                                         $rv['content'] .= "<div clear='both'>";
3088                                         $rv['content'] .= __("Originally from:");
3089
3090                                         $rv['content'] .= "&nbsp;";
3091
3092                                         $tmp_line = db_fetch_assoc($tmp_result);
3093
3094                                         $rv['content'] .= "<a target='_blank'
3095                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
3096                                                 $tmp_line['title'] . "</a>";
3097
3098                                         $rv['content'] .= "&nbsp;";
3099
3100                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3101                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.svg'></a>";
3102
3103                                         $rv['content'] .= "</div>";
3104                                 }
3105                         }
3106
3107                         $rv['content'] .= "</div>";
3108
3109                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3110                                 if ($line['note']) {
3111                                         $rv['content'] .= format_article_note($id, $line['note'], !$zoom_mode);
3112                                 }
3113                         $rv['content'] .= "</div>";
3114
3115                         $rv['content'] .= "<div class=\"postContent\">";
3116
3117                         $rv['content'] .= $line["content"];
3118
3119                         $rv['content'] .= format_article_enclosures($link, $id,
3120                                 $always_display_enclosures, $line["content"], $line["hide_images"]);
3121
3122                         $rv['content'] .= "</div>";
3123
3124                         $rv['content'] .= "</div>";
3125
3126                 }
3127
3128                 if ($zoom_mode) {
3129                         $rv['content'] .= "
3130                                 <div class='footer'>
3131                                 <button onclick=\"return window.close()\">".
3132                                         __("Close this window")."</button></div>";
3133                         $rv['content'] .= "</body></html>";
3134                 }
3135
3136                 return $rv;
3137
3138         }
3139
3140         function print_checkpoint($n, $s) {
3141                 $ts = microtime(true);
3142                 echo sprintf("<!-- CP[$n] %.4f seconds -->", $ts - $s);
3143                 return $ts;
3144         }
3145
3146         function sanitize_tag($tag) {
3147                 $tag = trim($tag);
3148
3149                 $tag = mb_strtolower($tag, 'utf-8');
3150
3151                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3152
3153 //              $tag = str_replace('"', "", $tag);
3154 //              $tag = str_replace("+", " ", $tag);
3155                 $tag = str_replace("technorati tag: ", "", $tag);
3156
3157                 return $tag;
3158         }
3159
3160         function get_self_url_prefix() {
3161                 if (strrpos(SELF_URL_PATH, "/") === strlen(SELF_URL_PATH)-1) {
3162                         return substr(SELF_URL_PATH, 0, strlen(SELF_URL_PATH)-1);
3163                 } else {
3164                         return SELF_URL_PATH;
3165                 }
3166         }
3167
3168         /**
3169          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3170          *
3171          * @return string The Mozilla Firefox feed adding URL.
3172          */
3173         function add_feed_url() {
3174                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3175
3176                 $url_path = get_self_url_prefix() .
3177                         "/public.php?op=subscribe&feed_url=%s";
3178                 return $url_path;
3179         } // function add_feed_url
3180
3181         function encrypt_password($pass, $salt = '', $mode2 = false) {
3182                 if ($salt && $mode2) {
3183                         return "MODE2:" . hash('sha256', $salt . $pass);
3184                 } else if ($salt) {
3185                         return "SHA1X:" . sha1("$salt:$pass");
3186                 } else {
3187                         return "SHA1:" . sha1($pass);
3188                 }
3189         } // function encrypt_password
3190
3191         function load_filters($link, $feed_id, $owner_uid, $action_id = false) {
3192                 $filters = array();
3193
3194                 $cat_id = (int)getFeedCategory($link, $feed_id);
3195
3196                 $result = db_query($link, "SELECT * FROM ttrss_filters2 WHERE
3197                         owner_uid = $owner_uid AND enabled = true ORDER BY order_id, title");
3198
3199                 $check_cats = join(",", array_merge(
3200                         getParentCategories($link, $cat_id, $owner_uid),
3201                         array($cat_id)));
3202
3203                 while ($line = db_fetch_assoc($result)) {
3204                         $filter_id = $line["id"];
3205
3206                         $result2 = db_query($link, "SELECT
3207                                 r.reg_exp, r.inverse, r.feed_id, r.cat_id, r.cat_filter, t.name AS type_name
3208                                 FROM ttrss_filters2_rules AS r,
3209                                 ttrss_filter_types AS t
3210                                 WHERE
3211                                         (cat_id IS NULL OR cat_id IN ($check_cats)) AND
3212                                         (feed_id IS NULL OR feed_id = '$feed_id') AND
3213                                         filter_type = t.id AND filter_id = '$filter_id'");
3214
3215                         $rules = array();
3216                         $actions = array();
3217
3218                         while ($rule_line = db_fetch_assoc($result2)) {
3219 #                               print_r($rule_line);
3220
3221                                 $rule = array();
3222                                 $rule["reg_exp"] = $rule_line["reg_exp"];
3223                                 $rule["type"] = $rule_line["type_name"];
3224                                 $rule["inverse"] = sql_bool_to_bool($rule_line["inverse"]);
3225
3226                                 array_push($rules, $rule);
3227                         }
3228
3229                         $result2 = db_query($link, "SELECT a.action_param,t.name AS type_name
3230                                 FROM ttrss_filters2_actions AS a,
3231                                 ttrss_filter_actions AS t
3232                                 WHERE
3233                                         action_id = t.id AND filter_id = '$filter_id'");
3234
3235                         while ($action_line = db_fetch_assoc($result2)) {
3236 #                               print_r($action_line);
3237
3238                                 $action = array();
3239                                 $action["type"] = $action_line["type_name"];
3240                                 $action["param"] = $action_line["action_param"];
3241
3242                                 array_push($actions, $action);
3243                         }
3244
3245
3246                         $filter = array();
3247                         $filter["match_any_rule"] = sql_bool_to_bool($line["match_any_rule"]);
3248                         $filter["inverse"] = sql_bool_to_bool($line["inverse"]);
3249                         $filter["rules"] = $rules;
3250                         $filter["actions"] = $actions;
3251
3252                         if (count($rules) > 0 && count($actions) > 0) {
3253                                 array_push($filters, $filter);
3254                         }
3255                 }
3256
3257                 return $filters;
3258         }
3259
3260         function get_score_pic($score) {
3261                 if ($score > 100) {
3262                         return "score_high.png";
3263                 } else if ($score > 0) {
3264                         return "score_half_high.png";
3265                 } else if ($score < -100) {
3266                         return "score_low.png";
3267                 } else if ($score < 0) {
3268                         return "score_half_low.png";
3269                 } else {
3270                         return "score_neutral.png";
3271                 }
3272         }
3273
3274         function feed_has_icon($id) {
3275                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3276         }
3277
3278         function init_connection($link) {
3279                 if ($link) {
3280
3281                         if (DB_TYPE == "pgsql") {
3282                                 pg_query($link, "set client_encoding = 'UTF-8'");
3283                                 pg_set_client_encoding("UNICODE");
3284                                 pg_query($link, "set datestyle = 'ISO, european'");
3285                                 pg_query($link, "set TIME ZONE 0");
3286                         } else {
3287                                 db_query($link, "SET time_zone = '+0:0'");
3288
3289                                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
3290                                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
3291                                 }
3292                         }
3293
3294                         global $pluginhost;
3295
3296                         $pluginhost = new PluginHost($link);
3297                         $pluginhost->load(PLUGINS, $pluginhost::KIND_ALL);
3298
3299                         return true;
3300                 } else {
3301                         print "Unable to connect to database:" . db_last_error();
3302                         return false;
3303                 }
3304         }
3305
3306         function format_tags_string($tags, $id) {
3307
3308                 $tags_str = "";
3309                 $tags_nolinks_str = "";
3310
3311                 $num_tags = 0;
3312
3313                 $tag_limit = 6;
3314
3315                 $formatted_tags = array();
3316
3317                 foreach ($tags as $tag) {
3318                         $num_tags++;
3319                         $tag_escaped = str_replace("'", "\\'", $tag);
3320
3321                         if (mb_strlen($tag) > 30) {
3322                                 $tag = truncate_string($tag, 30);
3323                         }
3324
3325                         $tag_str = "<a href=\"javascript:viewfeed('$tag_escaped')\">$tag</a>";
3326
3327                         array_push($formatted_tags, $tag_str);
3328
3329                         $tmp_tags_str = implode(", ", $formatted_tags);
3330
3331                         if ($num_tags == $tag_limit || mb_strlen($tmp_tags_str) > 150) {
3332                                 break;
3333                         }
3334                 }
3335
3336                 $tags_str = implode(", ", $formatted_tags);
3337
3338                 if ($num_tags < count($tags)) {
3339                         $tags_str .= ", &hellip;";
3340                 }
3341
3342                 if ($num_tags == 0) {
3343                         $tags_str = __("no tags");
3344                 }
3345
3346                 return $tags_str;
3347
3348         }
3349
3350         function format_article_labels($labels, $id) {
3351
3352                 $labels_str = "";
3353
3354                 foreach ($labels as $l) {
3355                         $labels_str .= sprintf("<span class='hlLabelRef'
3356                                 style='color : %s; background-color : %s'>%s</span>",
3357                                         $l[2], $l[3], $l[1]);
3358                         }
3359
3360                 return $labels_str;
3361
3362         }
3363
3364         function format_article_note($id, $note, $allow_edit = true) {
3365
3366                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
3367                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
3368                         ($allow_edit ? __('(edit note)') : "")."</div>$note</div>";
3369
3370                 return $str;
3371         }
3372
3373
3374         function get_feed_category($link, $feed_cat, $parent_cat_id = false) {
3375                 if ($parent_cat_id) {
3376                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3377                         $parent_insert = "'$parent_cat_id'";
3378                 } else {
3379                         $parent_qpart = "parent_cat IS NULL";
3380                         $parent_insert = "NULL";
3381                 }
3382
3383                 $result = db_query($link,
3384                         "SELECT id FROM ttrss_feed_categories
3385                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3386
3387                 if (db_num_rows($result) == 0) {
3388                         return false;
3389                 } else {
3390                         return db_fetch_result($result, 0, "id");
3391                 }
3392         }
3393
3394         function add_feed_category($link, $feed_cat, $parent_cat_id = false) {
3395
3396                 if (!$feed_cat) return false;
3397
3398                 db_query($link, "BEGIN");
3399
3400                 if ($parent_cat_id) {
3401                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3402                         $parent_insert = "'$parent_cat_id'";
3403                 } else {
3404                         $parent_qpart = "parent_cat IS NULL";
3405                         $parent_insert = "NULL";
3406                 }
3407
3408                 $result = db_query($link,
3409                         "SELECT id FROM ttrss_feed_categories
3410                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3411
3412                 if (db_num_rows($result) == 0) {
3413
3414                         $result = db_query($link,
3415                                 "INSERT INTO ttrss_feed_categories (owner_uid,title,parent_cat)
3416                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat', $parent_insert)");
3417
3418                         db_query($link, "COMMIT");
3419
3420                         return true;
3421                 }
3422
3423                 return false;
3424         }
3425
3426         function getArticleFeed($link, $id) {
3427                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3428                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3429
3430                 if (db_num_rows($result) != 0) {
3431                         return db_fetch_result($result, 0, "feed_id");
3432                 } else {
3433                         return 0;
3434                 }
3435         }
3436
3437         /**
3438          * Fixes incomplete URLs by prepending "http://".
3439          * Also replaces feed:// with http://, and
3440          * prepends a trailing slash if the url is a domain name only.
3441          *
3442          * @param string $url Possibly incomplete URL
3443          *
3444          * @return string Fixed URL.
3445          */
3446         function fix_url($url) {
3447                 if (strpos($url, '://') === false) {
3448                         $url = 'http://' . $url;
3449                 } else if (substr($url, 0, 5) == 'feed:') {
3450                         $url = 'http:' . substr($url, 5);
3451                 }
3452
3453                 //prepend slash if the URL has no slash in it
3454                 // "http://www.example" -> "http://www.example/"
3455                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
3456                         $url .= '/';
3457                 }
3458
3459                 if ($url != "http:///")
3460                         return $url;
3461                 else
3462                         return '';
3463         }
3464
3465         function validate_feed_url($url) {
3466                 $parts = parse_url($url);
3467
3468                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
3469
3470         }
3471
3472         function get_article_enclosures($link, $id) {
3473
3474                 $query = "SELECT * FROM ttrss_enclosures
3475                         WHERE post_id = '$id' AND content_url != ''";
3476
3477                 $rv = array();
3478
3479                 $result = db_query($link, $query);
3480
3481                 if (db_num_rows($result) > 0) {
3482                         while ($line = db_fetch_assoc($result)) {
3483                                 array_push($rv, $line);
3484                         }
3485                 }
3486
3487                 return $rv;
3488         }
3489
3490         function save_email_address($link, $email) {
3491                 // FIXME: implement persistent storage of emails
3492
3493                 if (!$_SESSION['stored_emails'])
3494                         $_SESSION['stored_emails'] = array();
3495
3496                 if (!in_array($email, $_SESSION['stored_emails']))
3497                         array_push($_SESSION['stored_emails'], $email);
3498         }
3499
3500
3501         function get_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
3502
3503                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3504
3505                 $sql_is_cat = bool_to_sql_bool($is_cat);
3506
3507                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
3508                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
3509                         AND owner_uid = " . $owner_uid);
3510
3511                 if (db_num_rows($result) == 1) {
3512                         return db_fetch_result($result, 0, "access_key");
3513                 } else {
3514                         $key = db_escape_string($link, sha1(uniqid(rand(), true)));
3515
3516                         $result = db_query($link, "INSERT INTO ttrss_access_keys
3517                                 (access_key, feed_id, is_cat, owner_uid)
3518                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
3519
3520                         return $key;
3521                 }
3522                 return false;
3523         }
3524
3525         function get_feeds_from_html($url, $content)
3526         {
3527                 $url     = fix_url($url);
3528                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
3529
3530                 libxml_use_internal_errors(true);
3531
3532                 $doc = new DOMDocument();
3533                 $doc->loadHTML($content);
3534                 $xpath = new DOMXPath($doc);
3535                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
3536                 $feedUrls = array();
3537                 foreach ($entries as $entry) {
3538                         if ($entry->hasAttribute('href')) {
3539                                 $title = $entry->getAttribute('title');
3540                                 if ($title == '') {
3541                                         $title = $entry->getAttribute('type');
3542                                 }
3543                                 $feedUrl = rewrite_relative_url(
3544                                         $baseUrl, $entry->getAttribute('href')
3545                                 );
3546                                 $feedUrls[$feedUrl] = $title;
3547                         }
3548                 }
3549                 return $feedUrls;
3550         }
3551
3552         function is_html($content) {
3553                 return preg_match("/<html|DOCTYPE html/i", substr($content, 0, 20)) !== 0;
3554         }
3555
3556         function url_is_html($url, $login = false, $pass = false) {
3557                 return is_html(fetch_file_contents($url, false, $login, $pass));
3558         }
3559
3560         function print_label_select($link, $name, $value, $attributes = "") {
3561
3562                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
3563                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
3564
3565                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
3566                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
3567
3568                 while ($line = db_fetch_assoc($result)) {
3569
3570                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
3571
3572                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
3573                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
3574
3575                 }
3576
3577 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
3578
3579                 print "</select>";
3580
3581
3582         }
3583
3584         function format_article_enclosures($link, $id, $always_display_enclosures,
3585                                         $article_content, $hide_images = false) {
3586
3587                 $result = get_article_enclosures($link, $id);
3588                 $rv = '';
3589
3590                 if (count($result) > 0) {
3591
3592                         $entries_html = array();
3593                         $entries = array();
3594                         $entries_inline = array();
3595
3596                         foreach ($result as $line) {
3597
3598                                 $url = $line["content_url"];
3599                                 $ctype = $line["content_type"];
3600
3601                                 if (!$ctype) $ctype = __("unknown type");
3602
3603                                 $filename = substr($url, strrpos($url, "/")+1);
3604
3605                                 $player = format_inline_player($link, $url, $ctype);
3606
3607                                 if ($player) array_push($entries_inline, $player);
3608
3609 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3610 #                                       $filename . " (" . $ctype . ")" . "</a>";
3611
3612                                 $entry = "<div onclick=\"window.open('".htmlspecialchars($url)."')\"
3613                                         dojoType=\"dijit.MenuItem\">$filename ($ctype)</div>";
3614
3615                                 array_push($entries_html, $entry);
3616
3617                                 $entry = array();
3618
3619                                 $entry["type"] = $ctype;
3620                                 $entry["filename"] = $filename;
3621                                 $entry["url"] = $url;
3622
3623                                 array_push($entries, $entry);
3624                         }
3625
3626                         if ($_SESSION['uid'] && !get_pref($link, "STRIP_IMAGES") && !$_SESSION["bw_limit"]) {
3627                                 if ($always_display_enclosures ||
3628                                                         !preg_match("/<img/i", $article_content)) {
3629
3630                                         foreach ($entries as $entry) {
3631
3632                                                 if (preg_match("/image/", $entry["type"]) ||
3633                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
3634
3635                                                                 if (!$hide_images) {
3636                                                                         $rv .= "<p><img
3637                                                                         alt=\"".htmlspecialchars($entry["filename"])."\"
3638                                                                         src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
3639                                                                 } else {
3640                                                                         $rv .= "<p><a target=\"_blank\"
3641                                                                         href=\"".htmlspecialchars($entry["url"])."\"
3642                                                                         >" .htmlspecialchars($entry["url"]) . "</a></p>";
3643
3644                                                                 }
3645                                                 }
3646                                         }
3647                                 }
3648                         }
3649
3650                         if (count($entries_inline) > 0) {
3651                                 $rv .= "<hr clear='both'/>";
3652                                 foreach ($entries_inline as $entry) { $rv .= $entry; };
3653                                 $rv .= "<hr clear='both'/>";
3654                         }
3655
3656                         $rv .= "<select class=\"attachments\" onchange=\"openSelectedAttachment(this)\">".
3657                                 "<option value=''>" . __('Attachments')."</option>";
3658
3659                         foreach ($entries as $entry) {
3660                                 $rv .= "<option value=\"".htmlspecialchars($entry["url"])."\">" . htmlspecialchars($entry["filename"]) . "</option>";
3661
3662                         };
3663
3664                         $rv .= "</select>";
3665                 }
3666
3667                 return $rv;
3668         }
3669
3670         function getLastArticleId($link) {
3671                 $result = db_query($link, "SELECT MAX(ref_id) AS id FROM ttrss_user_entries
3672                         WHERE owner_uid = " . $_SESSION["uid"]);
3673
3674                 if (db_num_rows($result) == 1) {
3675                         return db_fetch_result($result, 0, "id");
3676                 } else {
3677                         return -1;
3678                 }
3679         }
3680
3681         function build_url($parts) {
3682                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
3683         }
3684
3685         /**
3686          * Converts a (possibly) relative URL to a absolute one.
3687          *
3688          * @param string $url     Base URL (i.e. from where the document is)
3689          * @param string $rel_url Possibly relative URL in the document
3690          *
3691          * @return string Absolute URL
3692          */
3693         function rewrite_relative_url($url, $rel_url) {
3694                 if (strpos($rel_url, "magnet:") === 0) {
3695                         return $rel_url;
3696                 } else if (strpos($rel_url, "://") !== false) {
3697                         return $rel_url;
3698                 } else if (strpos($rel_url, "//") === 0) {
3699                         # protocol-relative URL (rare but they exist)
3700                         return $rel_url;
3701                 } else if (strpos($rel_url, "/") === 0)
3702                 {
3703                         $parts = parse_url($url);
3704                         $parts['path'] = $rel_url;
3705
3706                         return build_url($parts);
3707
3708                 } else {
3709                         $parts = parse_url($url);
3710                         if (!isset($parts['path'])) {
3711                                 $parts['path'] = '/';
3712                         }
3713                         $dir = $parts['path'];
3714                         if (substr($dir, -1) !== '/') {
3715                                 $dir = dirname($parts['path']);
3716                                 $dir !== '/' && $dir .= '/';
3717                         }
3718                         $parts['path'] = $dir . $rel_url;
3719
3720                         return build_url($parts);
3721                 }
3722         }
3723
3724         function sphinx_search($query, $offset = 0, $limit = 30) {
3725                 require_once 'lib/sphinxapi.php';
3726
3727                 $sphinxClient = new SphinxClient();
3728
3729                 $sphinxClient->SetServer('localhost', 9312);
3730                 $sphinxClient->SetConnectTimeout(1);
3731
3732                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
3733                         'feed_title' => 20));
3734
3735                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
3736                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
3737                 $sphinxClient->SetLimits($offset, $limit, 1000);
3738                 $sphinxClient->SetArrayResult(false);
3739                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
3740
3741                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
3742
3743                 $ids = array();
3744
3745                 if (is_array($result['matches'])) {
3746                         foreach (array_keys($result['matches']) as $int_id) {
3747                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
3748                                 array_push($ids, $ref_id);
3749                         }
3750                 }
3751
3752                 return $ids;
3753         }
3754
3755         function cleanup_tags($link, $days = 14, $limit = 1000) {
3756
3757                 if (DB_TYPE == "pgsql") {
3758                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
3759                 } else if (DB_TYPE == "mysql") {
3760                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
3761                 }
3762
3763                 $tags_deleted = 0;
3764
3765                 while ($limit > 0) {
3766                         $limit_part = 500;
3767
3768                         $query = "SELECT ttrss_tags.id AS id
3769                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
3770                                 WHERE post_int_id = int_id AND $interval_query AND
3771                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
3772
3773                         $result = db_query($link, $query);
3774
3775                         $ids = array();
3776
3777                         while ($line = db_fetch_assoc($result)) {
3778                                 array_push($ids, $line['id']);
3779                         }
3780
3781                         if (count($ids) > 0) {
3782                                 $ids = join(",", $ids);
3783
3784                                 $tmp_result = db_query($link, "DELETE FROM ttrss_tags WHERE id IN ($ids)");
3785                                 $tags_deleted += db_affected_rows($link, $tmp_result);
3786                         } else {
3787                                 break;
3788                         }
3789
3790                         $limit -= $limit_part;
3791                 }
3792
3793                 return $tags_deleted;
3794         }
3795
3796         function print_user_stylesheet($link) {
3797                 $value = get_pref($link, 'USER_STYLESHEET');
3798
3799                 if ($value) {
3800                         print "<style type=\"text/css\">";
3801                         print str_replace("<br/>", "\n", $value);
3802                         print "</style>";
3803                 }
3804
3805         }
3806
3807         function rewrite_urls($html) {
3808                 libxml_use_internal_errors(true);
3809
3810                 $charset_hack = '<head>
3811                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
3812                 </head>';
3813
3814                 $doc = new DOMDocument();
3815                 $doc->loadHTML($charset_hack . $html);
3816                 $xpath = new DOMXPath($doc);
3817
3818                 $entries = $xpath->query('//*/text()');
3819
3820                 foreach ($entries as $entry) {
3821                         if (strstr($entry->wholeText, "://") !== false) {
3822                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
3823                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
3824
3825                                 if ($text != $entry->wholeText) {
3826                                         $cdoc = new DOMDocument();
3827                                         $cdoc->loadHTML($charset_hack . $text);
3828
3829
3830                                         foreach ($cdoc->childNodes as $cnode) {
3831                                                 $cnode = $doc->importNode($cnode, true);
3832
3833                                                 if ($cnode) {
3834                                                         $entry->parentNode->insertBefore($cnode);
3835                                                 }
3836                                         }
3837
3838                                         $entry->parentNode->removeChild($entry);
3839
3840                                 }
3841                         }
3842                 }
3843
3844                 $node = $doc->getElementsByTagName('body')->item(0);
3845
3846                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
3847                 if ($node)
3848                         return $doc->saveXML($node);
3849                 else
3850                         return $html;
3851         }
3852
3853         function filter_to_sql($link, $filter, $owner_uid) {
3854                 $query = array();
3855
3856                 if (DB_TYPE == "pgsql")
3857                         $reg_qpart = "~";
3858                 else
3859                         $reg_qpart = "REGEXP";
3860
3861                 foreach ($filter["rules"] AS $rule) {
3862                         $regexp_valid = preg_match('/' . $rule['reg_exp'] . '/',
3863                                 $rule['reg_exp']) !== FALSE;
3864
3865                         if ($regexp_valid) {
3866
3867                                 $rule['reg_exp'] = db_escape_string($link, $rule['reg_exp']);
3868
3869                                         switch ($rule["type"]) {
3870                                         case "title":
3871                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3872                                                         $rule['reg_exp'] . "')";
3873                                                 break;
3874                                         case "content":
3875                                                 $qpart = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
3876                                                         $rule['reg_exp'] . "')";
3877                                                 break;
3878                                         case "both":
3879                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3880                                                         $rule['reg_exp'] . "') OR LOWER(" .
3881                                                         "ttrss_entries.content) $reg_qpart LOWER('" . $rule['reg_exp'] . "')";
3882                                                 break;
3883                                         case "tag":
3884                                                 $qpart = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
3885                                                         $rule['reg_exp'] . "')";
3886                                                 break;
3887                                         case "link":
3888                                                 $qpart = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
3889                                                         $rule['reg_exp'] . "')";
3890                                                 break;
3891                                         case "author":
3892                                                 $qpart = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
3893                                                         $rule['reg_exp'] . "')";
3894                                                 break;
3895                                 }
3896
3897                                 if (isset($rule['inverse'])) $qpart = "NOT ($qpart)";
3898
3899                                 if (isset($rule["feed_id"]) && $rule["feed_id"] > 0) {
3900                                         $qpart .= " AND feed_id = " . db_escape_string($link, $rule["feed_id"]);
3901                                 }
3902
3903                                 if (isset($rule["cat_id"])) {
3904
3905                                         if ($rule["cat_id"] > 0) {
3906                                                 $children = getChildCategories($link, $rule["cat_id"], $owner_uid);
3907                                                 array_push($children, $rule["cat_id"]);
3908
3909                                                 $children = join(",", $children);
3910
3911                                                 $cat_qpart = "cat_id IN ($children)";
3912                                         } else {
3913                                                 $cat_qpart = "cat_id IS NULL";
3914                                         }
3915
3916                                         $qpart .= " AND $cat_qpart";
3917                                 }
3918
3919                                 array_push($query, "($qpart)");
3920
3921                         }
3922                 }
3923
3924                 if (count($query) > 0) {
3925                         $fullquery = "(" . join($filter["match_any_rule"] ? "OR" : "AND", $query) . ")";
3926                 } else {
3927                         $fullquery = "(false)";
3928                 }
3929
3930                 if ($filter['inverse']) $fullquery = "(NOT $fullquery)";
3931
3932                 return $fullquery;
3933         }
3934
3935         if (!function_exists('gzdecode')) {
3936                 function gzdecode($string) { // no support for 2nd argument
3937                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
3938                                 base64_encode($string));
3939                 }
3940         }
3941
3942         function get_random_bytes($length) {
3943                 if (function_exists('openssl_random_pseudo_bytes')) {
3944                         return openssl_random_pseudo_bytes($length);
3945                 } else {
3946                         $output = "";
3947
3948                         for ($i = 0; $i < $length; $i++)
3949                                 $output .= chr(mt_rand(0, 255));
3950
3951                         return $output;
3952                 }
3953         }
3954
3955         function read_stdin() {
3956                 $fp = fopen("php://stdin", "r");
3957
3958                 if ($fp) {
3959                         $line = trim(fgets($fp));
3960                         fclose($fp);
3961                         return $line;
3962                 }
3963
3964                 return null;
3965         }
3966
3967         function tmpdirname($path, $prefix) {
3968                 // Use PHP's tmpfile function to create a temporary
3969                 // directory name. Delete the file and keep the name.
3970                 $tempname = tempnam($path,$prefix);
3971                 if (!$tempname)
3972                         return false;
3973
3974                 if (!unlink($tempname))
3975                         return false;
3976
3977        return $tempname;
3978         }
3979
3980         function getFeedCategory($link, $feed) {
3981                 $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
3982                         WHERE id = '$feed'");
3983
3984                 if (db_num_rows($result) > 0) {
3985                         return db_fetch_result($result, 0, "cat_id");
3986                 } else {
3987                         return false;
3988                 }
3989
3990         }
3991
3992         function implements_interface($class, $interface) {
3993                 return in_array($interface, class_implements($class));
3994         }
3995
3996         function geturl($url){
3997
3998                 (function_exists('curl_init')) ? '' : die('cURL Must be installed for geturl function to work. Ask your host to enable it or uncomment extension=php_curl.dll in php.ini');
3999
4000                 $curl = curl_init();
4001                 $header[0] = "Accept: text/xml,application/xml,application/xhtml+xml,";
4002                 $header[0] .= "text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5";
4003                 $header[] = "Cache-Control: max-age=0";
4004                 $header[] = "Connection: keep-alive";
4005                 $header[] = "Keep-Alive: 300";
4006                 $header[] = "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7";
4007                 $header[] = "Accept-Language: en-us,en;q=0.5";
4008                 $header[] = "Pragma: ";
4009
4010                 curl_setopt($curl, CURLOPT_URL, $url);
4011                 curl_setopt($curl, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20100101 Firefox/5.0 Firefox/5.0');
4012                 curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
4013                 curl_setopt($curl, CURLOPT_HEADER, true);
4014                 curl_setopt($curl, CURLOPT_REFERER, $url);
4015                 curl_setopt($curl, CURLOPT_ENCODING, 'gzip,deflate');
4016                 curl_setopt($curl, CURLOPT_AUTOREFERER, true);
4017                 curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
4018                 //curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); //CURLOPT_FOLLOWLOCATION Disabled...
4019                 curl_setopt($curl, CURLOPT_TIMEOUT, 60);
4020
4021                 $html = curl_exec($curl);
4022
4023                 $status = curl_getinfo($curl);
4024                 curl_close($curl);
4025
4026                 if($status['http_code']!=200){
4027                         if($status['http_code'] == 301 || $status['http_code'] == 302) {
4028                                 list($header) = explode("\r\n\r\n", $html, 2);
4029                                 $matches = array();
4030                                 preg_match("/(Location:|URI:)[^(\n)]*/", $header, $matches);
4031                                 $url = trim(str_replace($matches[1],"",$matches[0]));
4032                                 $url_parsed = parse_url($url);
4033                                 return (isset($url_parsed))? geturl($url, $referer):'';
4034                         }
4035                         $oline='';
4036                         foreach($status as $key=>$eline){$oline.='['.$key.']'.$eline.' ';}
4037                         $line =$oline." \r\n ".$url."\r\n-----------------\r\n";
4038 #                       $handle = @fopen('./curl.error.log', 'a');
4039 #                       fwrite($handle, $line);
4040                         return FALSE;
4041                 }
4042                 return $url;
4043         }
4044
4045         function get_minified_js($files) {
4046                 require_once 'lib/jshrink/Minifier.php';
4047
4048                 $rv = '';
4049
4050                 foreach ($files as $js) {
4051                         if (!isset($_GET['debug'])) {
4052                                 $cached_file = CACHE_DIR . "/js/$js.js";
4053
4054                                 if (file_exists($cached_file) &&
4055                                                 is_readable($cached_file) &&
4056                                                 filemtime($cached_file) >= filemtime("js/$js.js")) {
4057
4058                                         $rv .= file_get_contents($cached_file);
4059
4060                                 } else {
4061                                         $minified = JShrink\Minifier::minify(file_get_contents("js/$js.js"));
4062                                         file_put_contents($cached_file, $minified);
4063                                         $rv .= $minified;
4064                                 }
4065                         } else {
4066                                 $rv .= file_get_contents("js/$js.js");
4067                         }
4068                 }
4069
4070                 return $rv;
4071         }
4072
4073         function stylesheet_tag($filename) {
4074                 $timestamp = filemtime($filename);
4075
4076                 echo "<link rel=\"stylesheet\" type=\"text/css\" href=\"$filename?$timestamp\"/>\n";
4077         }
4078
4079         function javascript_tag($filename) {
4080                 $query = "";
4081
4082                 if (!(strpos($filename, "?") === FALSE)) {
4083                         $query = substr($filename, strpos($filename, "?")+1);
4084                         $filename = substr($filename, 0, strpos($filename, "?"));
4085                 }
4086
4087                 $timestamp = filemtime($filename);
4088
4089                 if ($query) $timestamp .= "&$query";
4090
4091                 echo "<script type=\"text/javascript\" charset=\"utf-8\" src=\"$filename?$timestamp\"></script>\n";
4092         }
4093
4094         function calculate_dep_timestamp() {
4095                 $files = array_merge(glob("js/*.js"), glob("*.css"));
4096
4097                 $max_ts = -1;
4098
4099                 foreach ($files as $file) {
4100                         if (filemtime($file) > $max_ts) $max_ts = filemtime($file);
4101                 }
4102
4103                 return $max_ts;
4104         }
4105
4106         function T_js_decl($s1, $s2) {
4107                 if ($s1 && $s2) {
4108                         $s1 = preg_replace("/\n/", "", $s1);
4109                         $s2 = preg_replace("/\n/", "", $s2);
4110
4111                         $s1 = preg_replace("/\"/", "\\\"", $s1);
4112                         $s2 = preg_replace("/\"/", "\\\"", $s2);
4113
4114                         return "T_messages[\"$s1\"] = \"$s2\";\n";
4115                 }
4116         }
4117
4118         function init_js_translations() {
4119
4120         print 'var T_messages = new Object();
4121
4122                 function __(msg) {
4123                         if (T_messages[msg]) {
4124                                 return T_messages[msg];
4125                         } else {
4126                                 return msg;
4127                         }
4128                 }
4129
4130                 function ngettext(msg1, msg2, n) {
4131                         return (parseInt(n) > 1) ? msg2 : msg1;
4132                 }';
4133
4134                 $l10n = _get_reader();
4135
4136                 for ($i = 0; $i < $l10n->total; $i++) {
4137                         $orig = $l10n->get_original_string($i);
4138                         $translation = __($orig);
4139
4140                         print T_js_decl($orig, $translation);
4141                 }
4142         }
4143
4144         function label_to_feed_id($label) {
4145                 return LABEL_BASE_INDEX - 1 - abs($label);
4146         }
4147
4148         function feed_to_label_id($feed) {
4149                 return LABEL_BASE_INDEX - 1 + abs($feed);
4150         }
4151
4152 ?>