include/functions.php

   1 <?php
   2         define('EXPECTED_CONFIG_VERSION', 26);
   3         define('SCHEMA_VERSION', 105);
   4
   5         $fetch_last_error = false;
   6         $pluginhost = false;
   7
   8         function __autoload($class) {
   9                 $class_file = str_replace("_", "/", strtolower(basename($class)));
  10
  11                 $file = dirname(__FILE__)."/../classes/$class_file.php";
  12
  13                 if (file_exists($file)) {
  14                         require $file;
  15                 }
  16
  17         }
  18
  19         mb_internal_encoding("UTF-8");
  20         date_default_timezone_set('UTC');
  21         if (defined('E_DEPRECATED')) {
  22                 error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
  23         } else {
  24                 error_reporting(E_ALL & ~E_NOTICE);
  25         }
  26
  27         require_once 'config.php';
  28
  29         if (DB_TYPE == "pgsql") {
  30                 define('SUBSTRING_FOR_DATE', 'SUBSTRING_FOR_DATE');
  31         } else {
  32                 define('SUBSTRING_FOR_DATE', 'SUBSTRING');
  33         }
  34
  35         define('THEME_VERSION_REQUIRED', 1.1);
  36
  37         /**
  38          * Return available translations names.
  39          *
  40          * @access public
  41          * @return array A array of available translations.
  42          */
  43         function get_translations() {
  44                 $tr = array(
  45                                         "auto"  => "Detect automatically",
  46                                         "ca_CA" => "Català",
  47                                         "en_US" => "English",
  48                                         "es_ES" => "Español",
  49                                         "de_DE" => "Deutsch",
  50                                         "fr_FR" => "Français",
  51                                         "hu_HU" => "Magyar (Hungarian)",
  52                                         "it_IT" => "Italiano",
  53                                         "ja_JP" => "日本語 (Japanese)",
  54                                         "lv_LV" => "Latviešu",
  55                                         "nb_NO" => "Norwegian bokmål",
  56                                         "pl_PL" => "Polski",
  57                                         "ru_RU" => "Русский",
  58                                         "pt_BR" => "Portuguese/Brazil",
  59                                         "zh_CN" => "Simplified Chinese");
  60
  61                 return $tr;
  62         }
  63
  64         require_once "lib/accept-to-gettext.php";
  65         require_once "lib/gettext/gettext.inc";
  66
  67
  68         function startup_gettext() {
  69
  70                 # Get locale from Accept-Language header
  71                 $lang = al2gt(array_keys(get_translations()), "text/html");
  72
  73                 if (defined('_TRANSLATION_OVERRIDE_DEFAULT')) {
  74                         $lang = _TRANSLATION_OVERRIDE_DEFAULT;
  75                 }
  76
  77                 /* In login action of mobile version */
  78                 if ($_POST["language"] && defined('MOBILE_VERSION')) {
  79                         $lang = $_POST["language"];
  80                 } else if ($_SESSION["language"] && $_SESSION["language"] != "auto") {
  81                         $lang = $_SESSION["language"];
  82                 }
  83
  84                 if ($lang) {
  85                         if (defined('LC_MESSAGES')) {
  86                                 _setlocale(LC_MESSAGES, $lang);
  87                         } else if (defined('LC_ALL')) {
  88                                 _setlocale(LC_ALL, $lang);
  89                         }
  90
  91                         if (defined('MOBILE_VERSION')) {
  92                                 _bindtextdomain("messages", "../locale");
  93                         } else {
  94                                 _bindtextdomain("messages", "locale");
  95                         }
  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                 if (defined('QUIET') && QUIET) {
 126                         return;
 127                 }
 128                 $ts = strftime("%H:%M:%S", time());
 129                 if (function_exists('posix_getpid')) {
 130                         $ts = "$ts/" . posix_getpid();
 131                 }
 132                 print "[$ts] $msg\n";
 133         } // function _debug
 134
 135         /**
 136          * Purge a feed old posts.
 137          *
 138          * @param mixed $link A database connection.
 139          * @param mixed $feed_id The id of the purged feed.
 140          * @param mixed $purge_interval Olderness of purged posts.
 141          * @param boolean $debug Set to True to enable the debug. False by default.
 142          * @access public
 143          * @return void
 144          */
 145         function purge_feed($link, $feed_id, $purge_interval, $debug = false) {
 146
 147                 if (!$purge_interval) $purge_interval = feed_purge_interval($link, $feed_id);
 148
 149                 $rows = -1;
 150
 151                 $result = db_query($link,
 152                         "SELECT owner_uid FROM ttrss_feeds WHERE id = '$feed_id'");
 153
 154                 $owner_uid = false;
 155
 156                 if (db_num_rows($result) == 1) {
 157                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 158                 }
 159
 160                 if ($purge_interval == -1 || !$purge_interval) {
 161                         if ($owner_uid) {
 162                                 ccache_update($link, $feed_id, $owner_uid);
 163                         }
 164                         return;
 165                 }
 166
 167                 if (!$owner_uid) return;
 168
 169                 if (FORCE_ARTICLE_PURGE == 0) {
 170                         $purge_unread = get_pref($link, "PURGE_UNREAD_ARTICLES",
 171                                 $owner_uid, false);
 172                 } else {
 173                         $purge_unread = true;
 174                         $purge_interval = FORCE_ARTICLE_PURGE;
 175                 }
 176
 177                 if (!$purge_unread) $query_limit = " unread = false AND ";
 178
 179                 if (DB_TYPE == "pgsql") {
 180                         $pg_version = get_pgsql_version($link);
 181
 182                         if (preg_match("/^7\./", $pg_version) || preg_match("/^8\.0/", $pg_version)) {
 183
 184                                 $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 185                                         ttrss_entries.id = ref_id AND
 186                                         marked = false AND
 187                                         feed_id = '$feed_id' AND
 188                                         $query_limit
 189                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 190
 191                         } else {
 192
 193                                 $result = db_query($link, "DELETE FROM ttrss_user_entries
 194                                         USING ttrss_entries
 195                                         WHERE ttrss_entries.id = ref_id AND
 196                                         marked = false AND
 197                                         feed_id = '$feed_id' AND
 198                                         $query_limit
 199                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 200                         }
 201
 202                         $rows = pg_affected_rows($result);
 203
 204                 } else {
 205
 206 /*                      $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 207                                 marked = false AND feed_id = '$feed_id' AND
 208                                 (SELECT date_updated FROM ttrss_entries WHERE
 209                                         id = ref_id) < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)"); */
 210
 211                         $result = db_query($link, "DELETE FROM ttrss_user_entries
 212                                 USING ttrss_user_entries, ttrss_entries
 213                                 WHERE ttrss_entries.id = ref_id AND
 214                                 marked = false AND
 215                                 feed_id = '$feed_id' AND
 216                                 $query_limit
 217                                 ttrss_entries.date_updated < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)");
 218
 219                         $rows = mysql_affected_rows($link);
 220
 221                 }
 222
 223                 ccache_update($link, $feed_id, $owner_uid);
 224
 225                 if ($debug) {
 226                         _debug("Purged feed $feed_id ($purge_interval): deleted $rows articles");
 227                 }
 228
 229                 return $rows;
 230         } // function purge_feed
 231
 232         function feed_purge_interval($link, $feed_id) {
 233
 234                 $result = db_query($link, "SELECT purge_interval, owner_uid FROM ttrss_feeds
 235                         WHERE id = '$feed_id'");
 236
 237                 if (db_num_rows($result) == 1) {
 238                         $purge_interval = db_fetch_result($result, 0, "purge_interval");
 239                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 240
 241                         if ($purge_interval == 0) $purge_interval = get_pref($link,
 242                                 'PURGE_OLD_DAYS', $owner_uid);
 243
 244                         return $purge_interval;
 245
 246                 } else {
 247                         return -1;
 248                 }
 249         }
 250
 251         function purge_orphans($link, $do_output = false) {
 252
 253                 // purge orphaned posts in main content table
 254                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
 255                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
 256
 257                 if ($do_output) {
 258                         $rows = db_affected_rows($link, $result);
 259                         _debug("Purged $rows orphaned posts.");
 260                 }
 261         }
 262
 263         function get_feed_update_interval($link, $feed_id) {
 264                 $result = db_query($link, "SELECT owner_uid, update_interval FROM
 265                         ttrss_feeds WHERE id = '$feed_id'");
 266
 267                 if (db_num_rows($result) == 1) {
 268                         $update_interval = db_fetch_result($result, 0, "update_interval");
 269                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 270
 271                         if ($update_interval != 0) {
 272                                 return $update_interval;
 273                         } else {
 274                                 return get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $owner_uid, false);
 275                         }
 276
 277                 } else {
 278                         return -1;
 279                 }
 280         }
 281
 282         function fetch_file_contents($url, $type = false, $login = false, $pass = false, $post_query = false, $timeout = false) {
 283                 $login = urlencode($login);
 284                 $pass = urlencode($pass);
 285
 286                 global $fetch_last_error;
 287
 288                 if (function_exists('curl_init') && !ini_get("open_basedir")) {
 289                         //$ch = curl_init($url);
 290                         $ch = curl_init(geturl($url));
 291
 292                         curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout ? $timeout : 15);
 293                         curl_setopt($ch, CURLOPT_TIMEOUT, $timeout ? $timeout : 45);
 294                         //curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
 295                         curl_setopt($ch, CURLOPT_MAXREDIRS, 20);
 296                         curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
 297                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 298                         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 299                         curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 300                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 301                         curl_setopt($ch, CURLOPT_ENCODING , "gzip");
 302                         curl_setopt($ch, CURLOPT_REFERER, $url);
 303
 304                         if ($post_query) {
 305                                 curl_setopt($ch, CURLOPT_POST, true);
 306                                 curl_setopt($ch, CURLOPT_POSTFIELDS, $post_query);
 307                         }
 308
 309                         if ($login && $pass)
 310                                 curl_setopt($ch, CURLOPT_USERPWD, "$login:$pass");
 311
 312                         $contents = @curl_exec($ch);
 313
 314                         if (curl_errno($ch) === 23 || curl_errno($ch) === 61) {
 315                                 curl_setopt($ch, CURLOPT_ENCODING, 'none');
 316                                 $contents = @curl_exec($ch);
 317                         }
 318
 319                         if ($contents === false) {
 320                                 $fetch_last_error = curl_errno($ch) . " " . curl_error($ch);
 321                                 curl_close($ch);
 322                                 return false;
 323                         }
 324
 325                         $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 326                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 327
 328                         if ($http_code != 200 || $type && strpos($content_type, "$type") === false) {
 329                                 if (curl_errno($ch) != 0) {
 330                                         $fetch_last_error = curl_errno($ch) . " " . curl_error($ch);
 331                                 } else {
 332                                         $fetch_last_error = "HTTP Code: $http_code";
 333                                 }
 334                                 curl_close($ch);
 335                                 return false;
 336                         }
 337
 338                         curl_close($ch);
 339
 340                         return $contents;
 341                 } else {
 342                         if ($login && $pass ){
 343                                 $url_parts = array();
 344
 345                                 preg_match("/(^[^:]*):\/\/(.*)/", $url, $url_parts);
 346
 347                                 if ($url_parts[1] && $url_parts[2]) {
 348                                         $url = $url_parts[1] . "://$login:$pass@" . $url_parts[2];
 349                                 }
 350                         }
 351
 352                         $data = @file_get_contents($url);
 353
 354                         $gzdecoded = gzdecode($data);
 355                         if ($gzdecoded) $data = $gzdecoded;
 356
 357                         if (!$data && function_exists('error_get_last')) {
 358                                 $error = error_get_last();
 359                                 $fetch_last_error = $error["message"];
 360                         }
 361                         return $data;
 362                 }
 363
 364         }
 365
 366         /**
 367          * Try to determine the favicon URL for a feed.
 368          * adapted from wordpress favicon plugin by Jeff Minard (http://thecodepro.com/)
 369          * http://dev.wp-plugins.org/file/favatars/trunk/favatars.php
 370          *
 371          * @param string $url A feed or page URL
 372          * @access public
 373          * @return mixed The favicon URL, or false if none was found.
 374          */
 375         function get_favicon_url($url) {
 376
 377                 $favicon_url = false;
 378
 379                 if ($html = @fetch_file_contents($url)) {
 380
 381                         libxml_use_internal_errors(true);
 382
 383                         $doc = new DOMDocument();
 384                         $doc->loadHTML($html);
 385                         $xpath = new DOMXPath($doc);
 386
 387                         $base = $xpath->query('/html/head/base');
 388                         foreach ($base as $b) {
 389                                 $url = $b->getAttribute("href");
 390                                 break;
 391                         }
 392
 393                         $entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon"]');
 394                         if (count($entries) > 0) {
 395                                 foreach ($entries as $entry) {
 396                                         $favicon_url = rewrite_relative_url($url, $entry->getAttribute("href"));
 397                                         break;
 398                                 }
 399                         }
 400                 }
 401
 402                 if (!$favicon_url)
 403                         $favicon_url = rewrite_relative_url($url, "/favicon.ico");
 404
 405                 return $favicon_url;
 406         } // function get_favicon_url
 407
 408         function check_feed_favicon($site_url, $feed, $link) {
 409 #               print "FAVICON [$site_url]: $favicon_url\n";
 410
 411                 $icon_file = ICONS_DIR . "/$feed.ico";
 412
 413                 if (!file_exists($icon_file)) {
 414                         $favicon_url = get_favicon_url($site_url);
 415
 416                         if ($favicon_url) {
 417                                 // Limiting to "image" type misses those served with text/plain
 418                                 $contents = fetch_file_contents($favicon_url); // , "image");
 419
 420                                 if ($contents) {
 421                                         // Crude image type matching.
 422                                         // Patterns gleaned from the file(1) source code.
 423                                         if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
 424                                                 // 0       string  \000\000\001\000        MS Windows icon resource
 425                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
 426                                         }
 427                                         elseif (preg_match('/^GIF8/', $contents)) {
 428                                                 // 0       string          GIF8            GIF image data
 429                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
 430                                         }
 431                                         elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
 432                                                 // 0       string          \x89PNG\x0d\x0a\x1a\x0a         PNG image data
 433                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
 434                                         }
 435                                         elseif (preg_match('/^\xff\xd8/', $contents)) {
 436                                                 // 0       beshort         0xffd8          JPEG image data
 437                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
 438                                         }
 439                                         else {
 440                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
 441                                                 $contents = "";
 442                                         }
 443                                 }
 444
 445                                 if ($contents) {
 446                                         $fp = @fopen($icon_file, "w");
 447
 448                                         if ($fp) {
 449                                                 fwrite($fp, $contents);
 450                                                 fclose($fp);
 451                                                 chmod($icon_file, 0644);
 452                                         }
 453                                 }
 454                         }
 455                 }
 456         }
 457
 458         function print_select($id, $default, $values, $attributes = "") {
 459                 print "<select name=\"$id\" id=\"$id\" $attributes>";
 460                 foreach ($values as $v) {
 461                         if ($v == $default)
 462                                 $sel = "selected=\"1\"";
 463                          else
 464                                 $sel = "";
 465
 466                         $v = trim($v);
 467
 468                         print "<option value=\"$v\" $sel>$v</option>";
 469                 }
 470                 print "</select>";
 471         }
 472
 473         function print_select_hash($id, $default, $values, $attributes = "") {
 474                 print "<select name=\"$id\" id='$id' $attributes>";
 475                 foreach (array_keys($values) as $v) {
 476                         if ($v == $default)
 477                                 $sel = 'selected="selected"';
 478                          else
 479                                 $sel = "";
 480
 481                         $v = trim($v);
 482
 483                         print "<option $sel value=\"$v\">".$values[$v]."</option>";
 484                 }
 485
 486                 print "</select>";
 487         }
 488
 489         function print_radio($id, $default, $true_is, $values, $attributes = "") {
 490                 foreach ($values as $v) {
 491
 492                         if ($v == $default)
 493                                 $sel = "checked";
 494                          else
 495                                 $sel = "";
 496
 497                         if ($v == $true_is) {
 498                                 $sel .= " value=\"1\"";
 499                         } else {
 500                                 $sel .= " value=\"0\"";
 501                         }
 502
 503                         print "<input class=\"noborder\" dojoType=\"dijit.form.RadioButton\"
 504                                 type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 505
 506                 }
 507         }
 508
 509         function initialize_user_prefs($link, $uid, $profile = false) {
 510
 511                 $uid = db_escape_string($uid);
 512
 513                 if (!$profile) {
 514                         $profile = "NULL";
 515                         $profile_qpart = "AND profile IS NULL";
 516                 } else {
 517                         $profile_qpart = "AND profile = '$profile'";
 518                 }
 519
 520                 if (get_schema_version($link) < 63) $profile_qpart = "";
 521
 522                 db_query($link, "BEGIN");
 523
 524                 $result = db_query($link, "SELECT pref_name,def_value FROM ttrss_prefs");
 525
 526                 $u_result = db_query($link, "SELECT pref_name
 527                         FROM ttrss_user_prefs WHERE owner_uid = '$uid' $profile_qpart");
 528
 529                 $active_prefs = array();
 530
 531                 while ($line = db_fetch_assoc($u_result)) {
 532                         array_push($active_prefs, $line["pref_name"]);
 533                 }
 534
 535                 while ($line = db_fetch_assoc($result)) {
 536                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 537 //                              print "adding " . $line["pref_name"] . "<br>";
 538
 539                                 if (get_schema_version($link) < 63) {
 540                                         db_query($link, "INSERT INTO ttrss_user_prefs
 541                                                 (owner_uid,pref_name,value) VALUES
 542                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 543
 544                                 } else {
 545                                         db_query($link, "INSERT INTO ttrss_user_prefs
 546                                                 (owner_uid,pref_name,value, profile) VALUES
 547                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."', $profile)");
 548                                 }
 549
 550                         }
 551                 }
 552
 553                 db_query($link, "COMMIT");
 554
 555         }
 556
 557         function get_ssl_certificate_id() {
 558                 if ($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"]) {
 559                         return sha1($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"] .
 560                                 $_SERVER["REDIRECT_SSL_CLIENT_V_START"] .
 561                                 $_SERVER["REDIRECT_SSL_CLIENT_V_END"] .
 562                                 $_SERVER["REDIRECT_SSL_CLIENT_S_DN"]);
 563                 }
 564                 return "";
 565         }
 566
 567         function authenticate_user($link, $login, $password, $check_only = false) {
 568
 569                 if (!SINGLE_USER_MODE) {
 570
 571                         $user_id = false;
 572
 573                         global $pluginhost;
 574                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_AUTH_USER) as $plugin) {
 575
 576                                 $user_id = (int) $plugin->authenticate($login, $password);
 577
 578                                 if ($user_id) {
 579                                         $_SESSION["auth_module"] = strtolower(get_class($plugin));
 580                                         break;
 581                                 }
 582                         }
 583
 584                         if ($user_id && !$check_only) {
 585                                 $_SESSION["uid"] = $user_id;
 586
 587                                 $result = db_query($link, "SELECT login,access_level,pwd_hash FROM ttrss_users
 588                                         WHERE id = '$user_id'");
 589
 590                                 $_SESSION["name"] = db_fetch_result($result, 0, "login");
 591                                 $_SESSION["access_level"] = db_fetch_result($result, 0, "access_level");
 592                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 593
 594                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 595                                         $_SESSION["uid"]);
 596
 597                                 $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 598                                 $_SESSION["pwd_hash"] = db_fetch_result($result, 0, "pwd_hash");
 599
 600                                 $_SESSION["last_version_check"] = time();
 601
 602                                 initialize_user_prefs($link, $_SESSION["uid"]);
 603
 604                                 return true;
 605                         }
 606
 607                         return false;
 608
 609                 } else {
 610
 611                         $_SESSION["uid"] = 1;
 612                         $_SESSION["name"] = "admin";
 613                         $_SESSION["access_level"] = 10;
 614
 615                         $_SESSION["hide_hello"] = true;
 616                         $_SESSION["hide_logout"] = true;
 617
 618                         $_SESSION["auth_module"] = false;
 619
 620                         if (!$_SESSION["csrf_token"]) {
 621                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 622                         }
 623
 624                         $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 625
 626                         initialize_user_prefs($link, $_SESSION["uid"]);
 627
 628                         return true;
 629                 }
 630         }
 631
 632         function make_password($length = 8) {
 633
 634                 $password = "";
 635                 $possible = "0123456789abcdfghjkmnpqrstvwxyzABCDFGHJKMNPQRSTVWXYZ";
 636
 637         $i = 0;
 638
 639                 while ($i < $length) {
 640                         $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 641
 642                         if (!strstr($password, $char)) {
 643                                 $password .= $char;
 644                                 $i++;
 645                         }
 646                 }
 647                 return $password;
 648         }
 649
 650         // this is called after user is created to initialize default feeds, labels
 651         // or whatever else
 652
 653         // user preferences are checked on every login, not here
 654
 655         function initialize_user($link, $uid) {
 656
 657                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 658                         values ('$uid', 'Tiny Tiny RSS: New Releases',
 659                         'http://tt-rss.org/releases.rss')");
 660
 661                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 662                         values ('$uid', 'Tiny Tiny RSS: Forum',
 663                                 'http://tt-rss.org/forum/rss.php')");
 664         }
 665
 666         function logout_user() {
 667                 session_destroy();
 668                 if (isset($_COOKIE[session_name()])) {
 669                    setcookie(session_name(), '', time()-42000, '/');
 670                 }
 671         }
 672
 673         function validate_csrf($csrf_token) {
 674                 return $csrf_token == $_SESSION['csrf_token'];
 675         }
 676
 677         function validate_session($link) {
 678                 if (SINGLE_USER_MODE) return true;
 679
 680                 $check_ip = $_SESSION['ip_address'];
 681
 682                 switch (SESSION_CHECK_ADDRESS) {
 683                 case 0:
 684                         $check_ip = '';
 685                         break;
 686                 case 1:
 687                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 688                         break;
 689                 case 2:
 690                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.'));
 691                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 692                         break;
 693                 };
 694
 695                 if ($check_ip && strpos($_SERVER['REMOTE_ADDR'], $check_ip) !== 0) {
 696                         $_SESSION["login_error_msg"] =
 697                                 __("Session failed to validate (incorrect IP)");
 698                         return false;
 699                 }
 700
 701                 if ($_SESSION["ref_schema_version"] != get_schema_version($link, true))
 702                         return false;
 703
 704                 if ($_SESSION["uid"]) {
 705
 706                         $result = db_query($link,
 707                                 "SELECT pwd_hash FROM ttrss_users WHERE id = '".$_SESSION["uid"]."'");
 708
 709                         $pwd_hash = db_fetch_result($result, 0, "pwd_hash");
 710
 711                         if ($pwd_hash != $_SESSION["pwd_hash"]) {
 712                                 return false;
 713                         }
 714                 }
 715
 716 /*              if ($_SESSION["cookie_lifetime"] && $_SESSION["uid"]) {
 717
 718                         //print_r($_SESSION);
 719
 720                         if (time() > $_SESSION["cookie_lifetime"]) {
 721                                 return false;
 722                         }
 723                 } */
 724
 725                 return true;
 726         }
 727
 728         function load_user_plugins($link, $owner_uid) {
 729                 if ($owner_uid) {
 730                         $plugins = get_pref($link, "_ENABLED_PLUGINS", $owner_uid);
 731
 732                         global $pluginhost;
 733                         $pluginhost->load($plugins, $pluginhost::KIND_USER, $owner_uid);
 734
 735                         if (get_schema_version($link) > 100) {
 736                                 $pluginhost->load_data();
 737                         }
 738                 }
 739         }
 740
 741         function login_sequence($link, $login_form = 0) {
 742                 $_SESSION["prefs_cache"] = false;
 743
 744                 if (SINGLE_USER_MODE) {
 745                         authenticate_user($link, "admin", null);
 746                         cache_prefs($link);
 747                         load_user_plugins($link, $_SESSION["uid"]);
 748                 } else {
 749                         if (!$_SESSION["uid"] || !validate_session($link)) {
 750
 751                                 if (AUTH_AUTO_LOGIN && authenticate_user($link, null, null)) {
 752                                     $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 753                                 } else {
 754                                          authenticate_user($link, null, null, true);
 755                                 }
 756
 757                                 if (!$_SESSION["uid"]) render_login_form($link, $login_form);
 758
 759                         } else {
 760                                 /* bump login timestamp */
 761                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 762                                         $_SESSION["uid"]);
 763                         }
 764
 765                         if ($_SESSION["uid"] && $_SESSION["language"] && SESSION_COOKIE_LIFETIME > 0) {
 766                                 setcookie("ttrss_lang", $_SESSION["language"],
 767                                         time() + SESSION_COOKIE_LIFETIME);
 768                         }
 769
 770                         if ($_SESSION["uid"]) {
 771                                 cache_prefs($link);
 772                                 load_user_plugins($link, $_SESSION["uid"]);
 773                         }
 774                 }
 775         }
 776
 777         function truncate_string($str, $max_len, $suffix = '&hellip;') {
 778                 if (mb_strlen($str, "utf-8") > $max_len - 3) {
 779                         return mb_substr($str, 0, $max_len, "utf-8") . $suffix;
 780                 } else {
 781                         return $str;
 782                 }
 783         }
 784
 785         // Deprecated, TODO: remove
 786         function theme_image($link, $filename) {
 787                 return $filename;
 788         }
 789
 790         function convert_timestamp($timestamp, $source_tz, $dest_tz) {
 791
 792                 try {
 793                         $source_tz = new DateTimeZone($source_tz);
 794                 } catch (Exception $e) {
 795                         $source_tz = new DateTimeZone('UTC');
 796                 }
 797
 798                 try {
 799                         $dest_tz = new DateTimeZone($dest_tz);
 800                 } catch (Exception $e) {
 801                         $dest_tz = new DateTimeZone('UTC');
 802                 }
 803
 804                 $dt = new DateTime(date('Y-m-d H:i:s', $timestamp), $source_tz);
 805                 return $dt->format('U') + $dest_tz->getOffset($dt);
 806         }
 807
 808         function make_local_datetime($link, $timestamp, $long, $owner_uid = false,
 809                                         $no_smart_dt = false) {
 810
 811                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 812                 if (!$timestamp) $timestamp = '1970-01-01 0:00';
 813
 814                 global $utc_tz;
 815                 global $tz_offset;
 816
 817                 # We store date in UTC internally
 818                 $dt = new DateTime($timestamp, $utc_tz);
 819
 820                 if ($tz_offset == -1) {
 821
 822                         $user_tz_string = get_pref($link, 'USER_TIMEZONE', $owner_uid);
 823
 824                         try {
 825                                 $user_tz = new DateTimeZone($user_tz_string);
 826                         } catch (Exception $e) {
 827                                 $user_tz = $utc_tz;
 828                         }
 829
 830                         $tz_offset = $user_tz->getOffset($dt);
 831                 }
 832
 833                 $user_timestamp = $dt->format('U') + $tz_offset;
 834
 835                 if (!$no_smart_dt) {
 836                         return smart_date_time($link, $user_timestamp,
 837                                 $tz_offset, $owner_uid);
 838                 } else {
 839                         if ($long)
 840                                 $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 841                         else
 842                                 $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 843
 844                         return date($format, $user_timestamp);
 845                 }
 846         }
 847
 848         function smart_date_time($link, $timestamp, $tz_offset = 0, $owner_uid = false) {
 849                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 850
 851                 if (date("Y.m.d", $timestamp) == date("Y.m.d", time() + $tz_offset)) {
 852                         return date("G:i", $timestamp);
 853                 } else if (date("Y", $timestamp) == date("Y", time() + $tz_offset)) {
 854                         $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 855                         return date($format, $timestamp);
 856                 } else {
 857                         $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 858                         return date($format, $timestamp);
 859                 }
 860         }
 861
 862         function sql_bool_to_bool($s) {
 863                 if ($s == "t" || $s == "1" || strtolower($s) == "true") {
 864                         return true;
 865                 } else {
 866                         return false;
 867                 }
 868         }
 869
 870         function bool_to_sql_bool($s) {
 871                 if ($s) {
 872                         return "true";
 873                 } else {
 874                         return "false";
 875                 }
 876         }
 877
 878         // Session caching removed due to causing wrong redirects to upgrade
 879         // script when get_schema_version() is called on an obsolete session
 880         // created on a previous schema version.
 881         function get_schema_version($link, $nocache = false) {
 882                 global $schema_version;
 883
 884                 if (!$schema_version) {
 885                         $result = db_query($link, "SELECT schema_version FROM ttrss_version");
 886                         $version = db_fetch_result($result, 0, "schema_version");
 887                         $schema_version = $version;
 888                         return $version;
 889                 } else {
 890                         return $schema_version;
 891                 }
 892         }
 893
 894         function sanity_check($link) {
 895                 require_once 'errors.php';
 896
 897                 $error_code = 0;
 898                 $schema_version = get_schema_version($link, true);
 899
 900                 if ($schema_version != SCHEMA_VERSION) {
 901                         $error_code = 5;
 902                 }
 903
 904                 if (DB_TYPE == "mysql") {
 905                         $result = db_query($link, "SELECT true", false);
 906                         if (db_num_rows($result) != 1) {
 907                                 $error_code = 10;
 908                         }
 909                 }
 910
 911                 if (db_escape_string("testTEST") != "testTEST") {
 912                         $error_code = 12;
 913                 }
 914
 915                 return array("code" => $error_code, "message" => $ERRORS[$error_code]);
 916         }
 917
 918         function file_is_locked($filename) {
 919                 if (function_exists('flock')) {
 920                         $fp = @fopen(LOCK_DIRECTORY . "/$filename", "r");
 921                         if ($fp) {
 922                                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 923                                         flock($fp, LOCK_UN);
 924                                         fclose($fp);
 925                                         return false;
 926                                 }
 927                                 fclose($fp);
 928                                 return true;
 929                         } else {
 930                                 return false;
 931                         }
 932                 }
 933                 return true; // consider the file always locked and skip the test
 934         }
 935
 936         function make_lockfile($filename) {
 937                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
 938
 939                 if ($fp && flock($fp, LOCK_EX | LOCK_NB)) {
 940                         if (function_exists('posix_getpid')) {
 941                                 fwrite($fp, posix_getpid() . "\n");
 942                         }
 943                         return $fp;
 944                 } else {
 945                         return false;
 946                 }
 947         }
 948
 949         function make_stampfile($filename) {
 950                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
 951
 952                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 953                         fwrite($fp, time() . "\n");
 954                         flock($fp, LOCK_UN);
 955                         fclose($fp);
 956                         return true;
 957                 } else {
 958                         return false;
 959                 }
 960         }
 961
 962         function sql_random_function() {
 963                 if (DB_TYPE == "mysql") {
 964                         return "RAND()";
 965                 } else {
 966                         return "RANDOM()";
 967                 }
 968         }
 969
 970         function catchup_feed($link, $feed, $cat_view, $owner_uid = false, $max_id = false) {
 971
 972                         if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 973
 974                         //if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
 975
 976                         $ref_check_qpart = ($max_id &&
 977                                 !get_pref($link, 'REVERSE_HEADLINES')) ? "ref_id <= '$max_id'" : "true";
 978
 979                         if (is_numeric($feed)) {
 980                                 if ($cat_view) {
 981
 982                                         if ($feed >= 0) {
 983
 984                                                 if ($feed > 0) {
 985                                                         $children = getChildCategories($link, $feed, $owner_uid);
 986                                                         array_push($children, $feed);
 987
 988                                                         $children = join(",", $children);
 989
 990                                                         $cat_qpart = "cat_id IN ($children)";
 991                                                 } else {
 992                                                         $cat_qpart = "cat_id IS NULL";
 993                                                 }
 994
 995                                                 db_query($link, "UPDATE ttrss_user_entries
 996                                                         SET unread = false,last_read = NOW()
 997                                                         WHERE feed_id IN (SELECT id FROM ttrss_feeds WHERE $cat_qpart)
 998                                                         AND $ref_check_qpart AND unread = true
 999                                                         AND owner_uid = $owner_uid");
1000
1001                                         } else if ($feed == -2) {
1002
1003                                                 db_query($link, "UPDATE ttrss_user_entries
1004                                                         SET unread = false,last_read = NOW() WHERE (SELECT COUNT(*)
1005                                                                 FROM ttrss_user_labels2 WHERE article_id = ref_id) > 0
1006                                                                 AND $ref_check_qpart
1007                                                                 AND unread = true AND owner_uid = $owner_uid");
1008                                         }
1009
1010                                 } else if ($feed > 0) {
1011
1012                                         db_query($link, "UPDATE ttrss_user_entries
1013                                                         SET unread = false,last_read = NOW()
1014                                                         WHERE feed_id = '$feed'
1015                                                         AND $ref_check_qpart AND unread = true
1016                                                         AND owner_uid = $owner_uid");
1017
1018                                 } else if ($feed < 0 && $feed > -10) { // special, like starred
1019
1020                                         if ($feed == -1) {
1021                                                 db_query($link, "UPDATE ttrss_user_entries
1022                                                         SET unread = false,last_read = NOW()
1023                                                         WHERE marked = true
1024                                                         AND $ref_check_qpart AND unread = true
1025                                                         AND owner_uid = $owner_uid");
1026                                         }
1027
1028                                         if ($feed == -2) {
1029                                                 db_query($link, "UPDATE ttrss_user_entries
1030                                                         SET unread = false,last_read = NOW()
1031                                                         WHERE published = true
1032                                                         AND $ref_check_qpart AND unread = true
1033                                                         AND owner_uid = $owner_uid");
1034                                         }
1035
1036                                         if ($feed == -3) {
1037
1038                                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE");
1039
1040                                                 if (DB_TYPE == "pgsql") {
1041                                                         $match_part = "updated > NOW() - INTERVAL '$intl hour' ";
1042                                                 } else {
1043                                                         $match_part = "updated > DATE_SUB(NOW(),
1044                                                                 INTERVAL $intl HOUR) ";
1045                                                 }
1046
1047                                                 $result = db_query($link, "SELECT id FROM ttrss_entries,
1048                                                         ttrss_user_entries WHERE $match_part AND
1049                                                         unread = true AND
1050                                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
1051                                                         owner_uid = $owner_uid");
1052
1053                                                 $affected_ids = array();
1054
1055                                                 while ($line = db_fetch_assoc($result)) {
1056                                                         array_push($affected_ids, $line["id"]);
1057                                                 }
1058
1059                                                 catchupArticlesById($link, $affected_ids, 0);
1060                                         }
1061
1062                                         if ($feed == -4) {
1063                                                 db_query($link, "UPDATE ttrss_user_entries
1064                                                         SET unread = false,last_read = NOW()
1065                                                         WHERE $ref_check_qpart AND unread = true AND
1066                                                         owner_uid = $owner_uid");
1067                                         }
1068
1069                                 } else if ($feed < -10) { // label
1070
1071                                         $label_id = -$feed - 11;
1072
1073                                         db_query($link, "UPDATE ttrss_user_entries, ttrss_user_labels2
1074                                                 SET unread = false, last_read = NOW()
1075                                                         WHERE label_id = '$label_id' AND unread = true
1076                                                         AND $ref_check_qpart
1077                                                         AND owner_uid = '$owner_uid' AND ref_id = article_id");
1078
1079                                 }
1080
1081                                 ccache_update($link, $feed, $owner_uid, $cat_view);
1082
1083                         } else { // tag
1084                                 db_query($link, "BEGIN");
1085
1086                                 $tag_name = db_escape_string($feed);
1087
1088                                 $result = db_query($link, "SELECT post_int_id FROM ttrss_tags
1089                                         WHERE tag_name = '$tag_name' AND owner_uid = $owner_uid");
1090
1091                                 while ($line = db_fetch_assoc($result)) {
1092                                         db_query($link, "UPDATE ttrss_user_entries SET
1093                                                 unread = false, last_read = NOW()
1094                                                 WHERE $ref_check_qpart AND unread = true
1095                                                 AND int_id = " . $line["post_int_id"]);
1096                                 }
1097                                 db_query($link, "COMMIT");
1098                         }
1099         }
1100
1101         function getAllCounters($link) {
1102                 $data = getGlobalCounters($link);
1103
1104                 $data = array_merge($data, getVirtCounters($link));
1105                 $data = array_merge($data, getLabelCounters($link));
1106                 $data = array_merge($data, getFeedCounters($link, $active_feed));
1107                 $data = array_merge($data, getCategoryCounters($link));
1108
1109                 return $data;
1110         }
1111
1112         function getCategoryTitle($link, $cat_id) {
1113
1114                 if ($cat_id == -1) {
1115                         return __("Special");
1116                 } else if ($cat_id == -2) {
1117                         return __("Labels");
1118                 } else {
1119
1120                         $result = db_query($link, "SELECT title FROM ttrss_feed_categories WHERE
1121                                 id = '$cat_id'");
1122
1123                         if (db_num_rows($result) == 1) {
1124                                 return db_fetch_result($result, 0, "title");
1125                         } else {
1126                                 return __("Uncategorized");
1127                         }
1128                 }
1129         }
1130
1131
1132         function getCategoryCounters($link) {
1133                 $ret_arr = array();
1134
1135                 /* Labels category */
1136
1137                 $cv = array("id" => -2, "kind" => "cat",
1138                         "counter" => getCategoryUnread($link, -2));
1139
1140                 array_push($ret_arr, $cv);
1141
1142                 $result = db_query($link, "SELECT id AS cat_id, value AS unread,
1143                         (SELECT COUNT(id) FROM ttrss_feed_categories AS c2
1144                                 WHERE c2.parent_cat = ttrss_feed_categories.id) AS num_children
1145                         FROM ttrss_feed_categories, ttrss_cat_counters_cache
1146                         WHERE ttrss_cat_counters_cache.feed_id = id AND
1147                         ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid AND
1148                         ttrss_feed_categories.owner_uid = " . $_SESSION["uid"]);
1149
1150                 while ($line = db_fetch_assoc($result)) {
1151                         $line["cat_id"] = (int) $line["cat_id"];
1152
1153                         if ($line["num_children"] > 0) {
1154                                 $child_counter = getCategoryChildrenUnread($link, $line["cat_id"], $_SESSION["uid"]);
1155                         } else {
1156                                 $child_counter = 0;
1157                         }
1158
1159                         $cv = array("id" => $line["cat_id"], "kind" => "cat",
1160                                 "counter" => $line["unread"] + $child_counter);
1161
1162                         array_push($ret_arr, $cv);
1163                 }
1164
1165                 /* Special case: NULL category doesn't actually exist in the DB */
1166
1167                 $cv = array("id" => 0, "kind" => "cat",
1168                         "counter" => (int) ccache_find($link, 0, $_SESSION["uid"], true));
1169
1170                 array_push($ret_arr, $cv);
1171
1172                 return $ret_arr;
1173         }
1174
1175         // only accepts real cats (>= 0)
1176         function getCategoryChildrenUnread($link, $cat, $owner_uid = false) {
1177                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1178
1179                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories WHERE parent_cat = '$cat'
1180                                 AND owner_uid = $owner_uid");
1181
1182                 $unread = 0;
1183
1184                 while ($line = db_fetch_assoc($result)) {
1185                         $unread += getCategoryUnread($link, $line["id"], $owner_uid);
1186                         $unread += getCategoryChildrenUnread($link, $line["id"], $owner_uid);
1187                 }
1188
1189                 return $unread;
1190         }
1191
1192         function getCategoryUnread($link, $cat, $owner_uid = false) {
1193
1194                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1195
1196                 if ($cat >= 0) {
1197
1198                         if ($cat != 0) {
1199                                 $cat_query = "cat_id = '$cat'";
1200                         } else {
1201                                 $cat_query = "cat_id IS NULL";
1202                         }
1203
1204                         $result = db_query($link, "SELECT id FROM ttrss_feeds WHERE $cat_query
1205                                         AND owner_uid = " . $owner_uid);
1206
1207                         $cat_feeds = array();
1208                         while ($line = db_fetch_assoc($result)) {
1209                                 array_push($cat_feeds, "feed_id = " . $line["id"]);
1210                         }
1211
1212                         if (count($cat_feeds) == 0) return 0;
1213
1214                         $match_part = implode(" OR ", $cat_feeds);
1215
1216                         $result = db_query($link, "SELECT COUNT(int_id) AS unread
1217                                 FROM ttrss_user_entries
1218                                 WHERE   unread = true AND ($match_part)
1219                                 AND owner_uid = " . $owner_uid);
1220
1221                         $unread = 0;
1222
1223                         # this needs to be rewritten
1224                         while ($line = db_fetch_assoc($result)) {
1225                                 $unread += $line["unread"];
1226                         }
1227
1228                         return $unread;
1229                 } else if ($cat == -1) {
1230                         return getFeedUnread($link, -1) + getFeedUnread($link, -2) + getFeedUnread($link, -3) + getFeedUnread($link, 0);
1231                 } else if ($cat == -2) {
1232
1233                         $result = db_query($link, "
1234                                 SELECT COUNT(unread) AS unread FROM
1235                                         ttrss_user_entries, ttrss_user_labels2
1236                                 WHERE article_id = ref_id AND unread = true
1237                                         AND ttrss_user_entries.owner_uid = '$owner_uid'");
1238
1239                         $unread = db_fetch_result($result, 0, "unread");
1240
1241                         return $unread;
1242
1243                 }
1244         }
1245
1246         function getFeedUnread($link, $feed, $is_cat = false) {
1247                 return getFeedArticles($link, $feed, $is_cat, true, $_SESSION["uid"]);
1248         }
1249
1250         function getLabelUnread($link, $label_id, $owner_uid = false) {
1251                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1252
1253                 $result = db_query($link, "SELECT COUNT(ref_id) AS unread FROM ttrss_user_entries, ttrss_user_labels2
1254                         WHERE owner_uid = '$owner_uid' AND unread = true AND label_id = '$label_id' AND article_id = ref_id");
1255
1256                 if (db_num_rows($result) != 0) {
1257                         return db_fetch_result($result, 0, "unread");
1258                 } else {
1259                         return 0;
1260                 }
1261         }
1262
1263         function getFeedArticles($link, $feed, $is_cat = false, $unread_only = false,
1264                 $owner_uid = false) {
1265
1266                 $n_feed = (int) $feed;
1267                 $need_entries = false;
1268
1269                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1270
1271                 if ($unread_only) {
1272                         $unread_qpart = "unread = true";
1273                 } else {
1274                         $unread_qpart = "true";
1275                 }
1276
1277                 if ($is_cat) {
1278                         return getCategoryUnread($link, $n_feed, $owner_uid);
1279                 } else if ($n_feed == -6) {
1280                         return 0;
1281                 } else if ($feed != "0" && $n_feed == 0) {
1282
1283                         $feed = db_escape_string($feed);
1284
1285                         $result = db_query($link, "SELECT SUM((SELECT COUNT(int_id)
1286                                 FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1287                                         AND ref_id = id AND $unread_qpart)) AS count FROM ttrss_tags
1288                                 WHERE owner_uid = $owner_uid AND tag_name = '$feed'");
1289                         return db_fetch_result($result, 0, "count");
1290
1291                 } else if ($n_feed == -1) {
1292                         $match_part = "marked = true";
1293                 } else if ($n_feed == -2) {
1294                         $match_part = "published = true";
1295                 } else if ($n_feed == -3) {
1296                         $match_part = "unread = true AND score >= 0";
1297
1298                         $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
1299
1300                         if (DB_TYPE == "pgsql") {
1301                                 $match_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
1302                         } else {
1303                                 $match_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
1304                         }
1305
1306                         $need_entries = true;
1307
1308                 } else if ($n_feed == -4) {
1309                         $match_part = "true";
1310                 } else if ($n_feed >= 0) {
1311
1312                         if ($n_feed != 0) {
1313                                 $match_part = "feed_id = '$n_feed'";
1314                         } else {
1315                                 $match_part = "feed_id IS NULL";
1316                         }
1317
1318                 } else if ($feed < -10) {
1319
1320                         $label_id = -$feed - 11;
1321
1322                         return getLabelUnread($link, $label_id, $owner_uid);
1323
1324                 }
1325
1326                 if ($match_part) {
1327
1328                         if ($need_entries) {
1329                                 $from_qpart = "ttrss_user_entries,ttrss_entries";
1330                                 $from_where = "ttrss_entries.id = ttrss_user_entries.ref_id AND";
1331                         } else {
1332                                 $from_qpart = "ttrss_user_entries";
1333                         }
1334
1335                         $query = "SELECT count(int_id) AS unread
1336                                 FROM $from_qpart WHERE
1337                                 $unread_qpart AND $from_where ($match_part) AND ttrss_user_entries.owner_uid = $owner_uid";
1338
1339                         //echo "[$feed/$query]\n";
1340
1341                         $result = db_query($link, $query);
1342
1343                 } else {
1344
1345                         $result = db_query($link, "SELECT COUNT(post_int_id) AS unread
1346                                 FROM ttrss_tags,ttrss_user_entries,ttrss_entries
1347                                 WHERE tag_name = '$feed' AND post_int_id = int_id AND ref_id = ttrss_entries.id
1348                                 AND $unread_qpart AND ttrss_tags.owner_uid = " . $owner_uid);
1349                 }
1350
1351                 $unread = db_fetch_result($result, 0, "unread");
1352
1353                 return $unread;
1354         }
1355
1356         function getGlobalUnread($link, $user_id = false) {
1357
1358                 if (!$user_id) {
1359                         $user_id = $_SESSION["uid"];
1360                 }
1361
1362                 $result = db_query($link, "SELECT SUM(value) AS c_id FROM ttrss_counters_cache
1363                         WHERE owner_uid = '$user_id' AND feed_id > 0");
1364
1365                 $c_id = db_fetch_result($result, 0, "c_id");
1366
1367                 return $c_id;
1368         }
1369
1370         function getGlobalCounters($link, $global_unread = -1) {
1371                 $ret_arr = array();
1372
1373                 if ($global_unread == -1) {
1374                         $global_unread = getGlobalUnread($link);
1375                 }
1376
1377                 $cv = array("id" => "global-unread",
1378                         "counter" => (int) $global_unread);
1379
1380                 array_push($ret_arr, $cv);
1381
1382                 $result = db_query($link, "SELECT COUNT(id) AS fn FROM
1383                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1384
1385                 $subscribed_feeds = db_fetch_result($result, 0, "fn");
1386
1387                 $cv = array("id" => "subscribed-feeds",
1388                         "counter" => (int) $subscribed_feeds);
1389
1390                 array_push($ret_arr, $cv);
1391
1392                 return $ret_arr;
1393         }
1394
1395         function getVirtCounters($link) {
1396
1397                 $ret_arr = array();
1398
1399                 for ($i = 0; $i >= -4; $i--) {
1400
1401                         $count = getFeedUnread($link, $i);
1402
1403                         $cv = array("id" => $i,
1404                                 "counter" => (int) $count);
1405
1406 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1407 //                              $cv["xmsg"] = getFeedArticles($link, $i)." ".__("total");
1408
1409                         array_push($ret_arr, $cv);
1410                 }
1411
1412                 return $ret_arr;
1413         }
1414
1415         function getLabelCounters($link, $descriptions = false) {
1416
1417                 $ret_arr = array();
1418
1419                 $owner_uid = $_SESSION["uid"];
1420
1421                 $result = db_query($link, "SELECT id,caption,COUNT(unread) AS unread
1422                         FROM ttrss_labels2 LEFT JOIN ttrss_user_labels2 ON
1423                                 (ttrss_labels2.id = label_id)
1424                                         LEFT JOIN ttrss_user_entries ON (ref_id = article_id AND unread = true)
1425                                 WHERE ttrss_labels2.owner_uid = $owner_uid GROUP BY ttrss_labels2.id,
1426                                         ttrss_labels2.caption");
1427
1428                 while ($line = db_fetch_assoc($result)) {
1429
1430                         $id = -$line["id"] - 11;
1431
1432                         $label_name = $line["caption"];
1433                         $count = $line["unread"];
1434
1435                         $cv = array("id" => $id,
1436                                 "counter" => (int) $count);
1437
1438                         if ($descriptions)
1439                                 $cv["description"] = $label_name;
1440
1441 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1442 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1443
1444                         array_push($ret_arr, $cv);
1445                 }
1446
1447                 return $ret_arr;
1448         }
1449
1450         function getFeedCounters($link, $active_feed = false) {
1451
1452                 $ret_arr = array();
1453
1454                 $query = "SELECT ttrss_feeds.id,
1455                                 ttrss_feeds.title,
1456                                 ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
1457                                 last_error, value AS count
1458                         FROM ttrss_feeds, ttrss_counters_cache
1459                         WHERE ttrss_feeds.owner_uid = ".$_SESSION["uid"]."
1460                                 AND ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid
1461                                 AND ttrss_counters_cache.feed_id = id";
1462
1463                 $result = db_query($link, $query);
1464                 $fctrs_modified = false;
1465
1466                 while ($line = db_fetch_assoc($result)) {
1467
1468                         $id = $line["id"];
1469                         $count = $line["count"];
1470                         $last_error = htmlspecialchars($line["last_error"]);
1471
1472                         $last_updated = make_local_datetime($link, $line['last_updated'], false);
1473
1474                         $has_img = feed_has_icon($id);
1475
1476                         if (date('Y') - date('Y', strtotime($line['last_updated'])) > 2)
1477                                 $last_updated = '';
1478
1479                         $cv = array("id" => $id,
1480                                 "updated" => $last_updated,
1481                                 "counter" => (int) $count,
1482                                 "has_img" => (int) $has_img);
1483
1484                         if ($last_error)
1485                                 $cv["error"] = $last_error;
1486
1487 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1488 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1489
1490                         if ($active_feed && $id == $active_feed)
1491                                 $cv["title"] = truncate_string($line["title"], 30);
1492
1493                         array_push($ret_arr, $cv);
1494
1495                 }
1496
1497                 return $ret_arr;
1498         }
1499
1500         function get_pgsql_version($link) {
1501                 $result = db_query($link, "SELECT version() AS version");
1502                 $version = explode(" ", db_fetch_result($result, 0, "version"));
1503                 return $version[1];
1504         }
1505
1506         /**
1507          * @return array (code => Status code, message => error message if available)
1508          *
1509          *                 0 - OK, Feed already exists
1510          *                 1 - OK, Feed added
1511          *                 2 - Invalid URL
1512          *                 3 - URL content is HTML, no feeds available
1513          *                 4 - URL content is HTML which contains multiple feeds.
1514          *                     Here you should call extractfeedurls in rpc-backend
1515          *                     to get all possible feeds.
1516          *                 5 - Couldn't download the URL content.
1517          */
1518         function subscribe_to_feed($link, $url, $cat_id = 0,
1519                         $auth_login = '', $auth_pass = '', $need_auth = false) {
1520
1521                 global $fetch_last_error;
1522
1523                 require_once "include/rssfuncs.php";
1524
1525                 $url = fix_url($url);
1526
1527                 if (!$url || !validate_feed_url($url)) return array("code" => 2);
1528
1529                 $contents = @fetch_file_contents($url, false, $auth_login, $auth_pass);
1530
1531                 if (!$contents) {
1532                         return array("code" => 5, "message" => $fetch_last_error);
1533                 }
1534
1535                 if (is_html($contents)) {
1536                         $feedUrls = get_feeds_from_html($url, $contents);
1537
1538                         if (count($feedUrls) == 0) {
1539                                 return array("code" => 3);
1540                         } else if (count($feedUrls) > 1) {
1541                                 return array("code" => 4, "feeds" => $feedUrls);
1542                         }
1543                         //use feed url as new URL
1544                         $url = key($feedUrls);
1545                 }
1546
1547                 if ($cat_id == "0" || !$cat_id) {
1548                         $cat_qpart = "NULL";
1549                 } else {
1550                         $cat_qpart = "'$cat_id'";
1551                 }
1552
1553                 $result = db_query($link,
1554                         "SELECT id FROM ttrss_feeds
1555                         WHERE feed_url = '$url' AND owner_uid = ".$_SESSION["uid"]);
1556
1557                 if (db_num_rows($result) == 0) {
1558                         $result = db_query($link,
1559                                 "INSERT INTO ttrss_feeds
1560                                         (owner_uid,feed_url,title,cat_id, auth_login,auth_pass,update_method)
1561                                 VALUES ('".$_SESSION["uid"]."', '$url',
1562                                 '[Unknown]', $cat_qpart, '$auth_login', '$auth_pass', 0)");
1563
1564                         $result = db_query($link,
1565                                 "SELECT id FROM ttrss_feeds WHERE feed_url = '$url'
1566                                         AND owner_uid = " . $_SESSION["uid"]);
1567
1568                         $feed_id = db_fetch_result($result, 0, "id");
1569
1570                         if ($feed_id) {
1571                                 update_rss_feed($link, $feed_id, true);
1572                         }
1573
1574                         return array("code" => 1);
1575                 } else {
1576                         return array("code" => 0);
1577                 }
1578         }
1579
1580         function print_feed_select($link, $id, $default_id = "",
1581                 $attributes = "", $include_all_feeds = true,
1582                 $root_id = false, $nest_level = 0) {
1583
1584                 if (!$root_id) {
1585                         print "<select id=\"$id\" name=\"$id\" $attributes>";
1586                         if ($include_all_feeds) {
1587                                 $is_selected = ("0" == $default_id) ? "selected=\"1\"" : "";
1588                                 print "<option $is_selected value=\"0\">".__('All feeds')."</option>";
1589                         }
1590                 }
1591
1592                 if (get_pref($link, 'ENABLE_FEED_CATS')) {
1593
1594                         if ($root_id)
1595                                 $parent_qpart = "parent_cat = '$root_id'";
1596                         else
1597                                 $parent_qpart = "parent_cat IS NULL";
1598
1599                         $result = db_query($link, "SELECT id,title,
1600                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1601                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1602                                 FROM ttrss_feed_categories
1603                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1604
1605                         while ($line = db_fetch_assoc($result)) {
1606
1607                                 for ($i = 0; $i < $nest_level; $i++)
1608                                         $line["title"] = " - " . $line["title"];
1609
1610                                 $is_selected = ("CAT:".$line["id"] == $default_id) ? "selected=\"1\"" : "";
1611
1612                                 printf("<option $is_selected value='CAT:%d'>%s</option>",
1613                                         $line["id"], htmlspecialchars($line["title"]));
1614
1615                                 if ($line["num_children"] > 0)
1616                                         print_feed_select($link, $id, $default_id, $attributes,
1617                                                 $include_all_feeds, $line["id"], $nest_level+1);
1618
1619                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1620                                         WHERE cat_id = '".$line["id"]."' AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1621
1622                                 while ($fline = db_fetch_assoc($feed_result)) {
1623                                         $is_selected = ($fline["id"] == $default_id) ? "selected=\"1\"" : "";
1624
1625                                         $fline["title"] = " + " . $fline["title"];
1626
1627                                         for ($i = 0; $i < $nest_level; $i++)
1628                                                 $fline["title"] = " - " . $fline["title"];
1629
1630                                         printf("<option $is_selected value='%d'>%s</option>",
1631                                                 $fline["id"], htmlspecialchars($fline["title"]));
1632                                 }
1633                         }
1634
1635                         if (!$root_id) {
1636                                 $is_selected = ($default_id == "CAT:0") ? "selected=\"1\"" : "";
1637
1638                                 printf("<option $is_selected value='CAT:0'>%s</option>",
1639                                         __("Uncategorized"));
1640
1641                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1642                                         WHERE cat_id IS NULL AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1643
1644                                 while ($fline = db_fetch_assoc($feed_result)) {
1645                                         $is_selected = ($fline["id"] == $default_id && !$default_is_cat) ? "selected=\"1\"" : "";
1646
1647                                         $fline["title"] = " + " . $fline["title"];
1648
1649                                         for ($i = 0; $i < $nest_level; $i++)
1650                                                 $fline["title"] = " - " . $fline["title"];
1651
1652                                         printf("<option $is_selected value='%d'>%s</option>",
1653                                                 $fline["id"], htmlspecialchars($fline["title"]));
1654                                 }
1655                         }
1656
1657                 } else {
1658                         $result = db_query($link, "SELECT id,title FROM ttrss_feeds
1659                                 WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
1660
1661                         while ($line = db_fetch_assoc($result)) {
1662
1663                                 $is_selected = ($line["id"] == $default_id) ? "selected=\"1\"" : "";
1664
1665                                 printf("<option $is_selected value='%d'>%s</option>",
1666                                         $line["id"], htmlspecialchars($line["title"]));
1667                         }
1668                 }
1669
1670                 if (!$root_id) {
1671                         print "</select>";
1672                 }
1673         }
1674
1675         function print_feed_cat_select($link, $id, $default_id,
1676                 $attributes, $include_all_cats = true, $root_id = false, $nest_level = 0) {
1677
1678                         if (!$root_id) {
1679                                         print "<select id=\"$id\" name=\"$id\" default=\"$default_id\" onchange=\"catSelectOnChange(this)\" $attributes>";
1680                         }
1681
1682                         if ($root_id)
1683                                 $parent_qpart = "parent_cat = '$root_id'";
1684                         else
1685                                 $parent_qpart = "parent_cat IS NULL";
1686
1687                         $result = db_query($link, "SELECT id,title,
1688                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1689                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1690                                 FROM ttrss_feed_categories
1691                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1692
1693                         while ($line = db_fetch_assoc($result)) {
1694                                 if ($line["id"] == $default_id) {
1695                                         $is_selected = "selected=\"1\"";
1696                                 } else {
1697                                         $is_selected = "";
1698                                 }
1699
1700                                 for ($i = 0; $i < $nest_level; $i++)
1701                                         $line["title"] = " - " . $line["title"];
1702
1703                                 if ($line["title"])
1704                                         printf("<option $is_selected value='%d'>%s</option>",
1705                                                 $line["id"], htmlspecialchars($line["title"]));
1706
1707                                 if ($line["num_children"] > 0)
1708                                         print_feed_cat_select($link, $id, $default_id, $attributes,
1709                                                 $include_all_cats, $line["id"], $nest_level+1);
1710                         }
1711
1712                         if (!$root_id) {
1713                                 if ($include_all_cats) {
1714                                         if (db_num_rows($result) > 0) {
1715                                                 print "<option disabled=\"1\">--------</option>";
1716                                         }
1717
1718                                         if ($default_id == 0) {
1719                                                 $is_selected = "selected=\"1\"";
1720                                         } else {
1721                                                 $is_selected = "";
1722                                         }
1723
1724                                         print "<option $is_selected value=\"0\">".__('Uncategorized')."</option>";
1725                                 }
1726                                 print "</select>";
1727                         }
1728                 }
1729
1730         function checkbox_to_sql_bool($val) {
1731                 return ($val == "on") ? "true" : "false";
1732         }
1733
1734         function getFeedCatTitle($link, $id) {
1735                 if ($id == -1) {
1736                         return __("Special");
1737                 } else if ($id < -10) {
1738                         return __("Labels");
1739                 } else if ($id > 0) {
1740                         $result = db_query($link, "SELECT ttrss_feed_categories.title
1741                                 FROM ttrss_feeds, ttrss_feed_categories WHERE ttrss_feeds.id = '$id' AND
1742                                         cat_id = ttrss_feed_categories.id");
1743                         if (db_num_rows($result) == 1) {
1744                                 return db_fetch_result($result, 0, "title");
1745                         } else {
1746                                 return __("Uncategorized");
1747                         }
1748                 } else {
1749                         return "getFeedCatTitle($id) failed";
1750                 }
1751
1752         }
1753
1754         function getFeedIcon($id) {
1755                 switch ($id) {
1756                 case 0:
1757                         return "images/archive.png";
1758                         break;
1759                 case -1:
1760                         return "images/mark_set.svg";
1761                         break;
1762                 case -2:
1763                         return "images/pub_set.svg";
1764                         break;
1765                 case -3:
1766                         return "images/fresh.png";
1767                         break;
1768                 case -4:
1769                         return "images/tag.png";
1770                         break;
1771                 case -6:
1772                         return "images/recently_read.png";
1773                         break;
1774                 default:
1775                         if ($id < -10) {
1776                                 return "images/label.png";
1777                         } else {
1778                                 if (file_exists(ICONS_DIR . "/$id.ico"))
1779                                         return ICONS_URL . "/$id.ico";
1780                         }
1781                         break;
1782                 }
1783         }
1784
1785         function getFeedTitle($link, $id, $cat = false) {
1786                 if ($cat) {
1787                         return getCategoryTitle($link, $id);
1788                 } else if ($id == -1) {
1789                         return __("Starred articles");
1790                 } else if ($id == -2) {
1791                         return __("Published articles");
1792                 } else if ($id == -3) {
1793                         return __("Fresh articles");
1794                 } else if ($id == -4) {
1795                         return __("All articles");
1796                 } else if ($id === 0 || $id === "0") {
1797                         return __("Archived articles");
1798                 } else if ($id == -6) {
1799                         return __("Recently read");
1800                 } else if ($id < -10) {
1801                         $label_id = -$id - 11;
1802                         $result = db_query($link, "SELECT caption FROM ttrss_labels2 WHERE id = '$label_id'");
1803                         if (db_num_rows($result) == 1) {
1804                                 return db_fetch_result($result, 0, "caption");
1805                         } else {
1806                                 return "Unknown label ($label_id)";
1807                         }
1808
1809                 } else if (is_numeric($id) && $id > 0) {
1810                         $result = db_query($link, "SELECT title FROM ttrss_feeds WHERE id = '$id'");
1811                         if (db_num_rows($result) == 1) {
1812                                 return db_fetch_result($result, 0, "title");
1813                         } else {
1814                                 return "Unknown feed ($id)";
1815                         }
1816                 } else {
1817                         return $id;
1818                 }
1819         }
1820
1821         function make_init_params($link) {
1822                 $params = array();
1823
1824                 $params["sign_progress"] = theme_image($link, "images/indicator_white.gif");
1825                 $params["sign_progress_tiny"] = theme_image($link, "images/indicator_tiny.gif");
1826                 $params["sign_excl"] = theme_image($link, "images/sign_excl.svg");
1827                 $params["sign_info"] = theme_image($link, "images/sign_info.svg");
1828
1829                 foreach (array("ON_CATCHUP_SHOW_NEXT_FEED", "HIDE_READ_FEEDS",
1830                         "ENABLE_FEED_CATS", "FEEDS_SORT_BY_UNREAD", "CONFIRM_FEED_CATCHUP",
1831                         "CDM_AUTO_CATCHUP", "FRESH_ARTICLE_MAX_AGE", "DEFAULT_ARTICLE_LIMIT",
1832                         "HIDE_READ_SHOWS_SPECIAL", "COMBINED_DISPLAY_MODE") as $param) {
1833
1834                                  $params[strtolower($param)] = (int) get_pref($link, $param);
1835                  }
1836
1837                 $params["icons_url"] = ICONS_URL;
1838                 $params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
1839                 $params["default_view_mode"] = get_pref($link, "_DEFAULT_VIEW_MODE");
1840                 $params["default_view_limit"] = (int) get_pref($link, "_DEFAULT_VIEW_LIMIT");
1841                 $params["default_view_order_by"] = get_pref($link, "_DEFAULT_VIEW_ORDER_BY");
1842                 $params["bw_limit"] = (int) $_SESSION["bw_limit"];
1843
1844                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
1845                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1846
1847                 $max_feed_id = db_fetch_result($result, 0, "mid");
1848                 $num_feeds = db_fetch_result($result, 0, "nf");
1849
1850                 $params["max_feed_id"] = (int) $max_feed_id;
1851                 $params["num_feeds"] = (int) $num_feeds;
1852
1853                 $params["collapsed_feedlist"] = (int) get_pref($link, "_COLLAPSED_FEEDLIST");
1854                 $params["hotkeys"] = get_hotkeys_map($link);
1855
1856                 $params["csrf_token"] = $_SESSION["csrf_token"];
1857                 $params["widescreen"] = (int) $_COOKIE["ttrss_widescreen"];
1858
1859                 $params['simple_update'] = defined('SIMPLE_UPDATE_MODE') && SIMPLE_UPDATE_MODE;
1860
1861                 return $params;
1862         }
1863
1864         function get_hotkeys_info($link) {
1865                 $hotkeys = array(
1866                         __("Navigation") => array(
1867                                 "next_feed" => __("Open next feed"),
1868                                 "prev_feed" => __("Open previous feed"),
1869                                 "next_article" => __("Open next article"),
1870                                 "prev_article" => __("Open previous article"),
1871                                 "next_article_noscroll" => __("Open next article (don't scroll long articles)"),
1872                                 "prev_article_noscroll" => __("Open previous article (don't scroll long articles)"),
1873                                 "search_dialog" => __("Show search dialog")),
1874                         __("Article") => array(
1875                                 "toggle_mark" => __("Toggle starred"),
1876                                 "toggle_publ" => __("Toggle published"),
1877                                 "toggle_unread" => __("Toggle unread"),
1878                                 "edit_tags" => __("Edit tags"),
1879                                 "dismiss_selected" => __("Dismiss selected"),
1880                                 "dismiss_read" => __("Dismiss read"),
1881                                 "open_in_new_window" => __("Open in new window"),
1882                                 "catchup_below" => __("Mark below as read"),
1883                                 "catchup_above" => __("Mark above as read"),
1884                                 "article_scroll_down" => __("Scroll down"),
1885                                 "article_scroll_up" => __("Scroll up"),
1886                                 "select_article_cursor" => __("Select article under cursor"),
1887                                 "email_article" => __("Email article"),
1888                                 "close_article" => __("Close article"),
1889                                 "toggle_widescreen" => __("Toggle widescreen mode")),
1890                         __("Article selection") => array(
1891                                 "select_all" => __("Select all articles"),
1892                                 "select_unread" => __("Select unread"),
1893                                 "select_marked" => __("Select starred"),
1894                                 "select_published" => __("Select published"),
1895                                 "select_invert" => __("Invert selection"),
1896                                 "select_none" => __("Deselect everything")),
1897                         __("Feed") => array(
1898                                 "feed_refresh" => __("Refresh current feed"),
1899                                 "feed_unhide_read" => __("Un/hide read feeds"),
1900                                 "feed_subscribe" => __("Subscribe to feed"),
1901                                 "feed_edit" => __("Edit feed"),
1902                                 "feed_catchup" => __("Mark as read"),
1903                                 "feed_reverse" => __("Reverse headlines"),
1904                                 "feed_debug_update" => __("Debug feed update"),
1905                                 "catchup_all" => __("Mark all feeds as read"),
1906                                 "cat_toggle_collapse" => __("Un/collapse current category"),
1907                                 "toggle_combined_mode" => __("Toggle combined mode")),
1908                         __("Go to") => array(
1909                                 "goto_all" => __("All articles"),
1910                                 "goto_fresh" => __("Fresh"),
1911                                 "goto_marked" => __("Starred"),
1912                                 "goto_published" => __("Published"),
1913                                 "goto_tagcloud" => __("Tag cloud"),
1914                                 "goto_prefs" => __("Preferences")),
1915                         __("Other") => array(
1916                                 "create_label" => __("Create label"),
1917                                 "create_filter" => __("Create filter"),
1918                                 "collapse_sidebar" => __("Un/collapse sidebar"),
1919                                 "help_dialog" => __("Show help dialog"))
1920                         );
1921
1922                 return $hotkeys;
1923         }
1924
1925         function get_hotkeys_map($link) {
1926                 $hotkeys = array(
1927 //                      "navigation" => array(
1928                                 "k" => "next_feed",
1929                                 "j" => "prev_feed",
1930                                 "n" => "next_article",
1931                                 "p" => "prev_article",
1932                                 "(38)|up" => "prev_article",
1933                                 "(40)|down" => "next_article",
1934 //                              "^(38)|Ctrl-up" => "prev_article_noscroll",
1935 //                              "^(40)|Ctrl-down" => "next_article_noscroll",
1936                                 "(191)|/" => "search_dialog",
1937 //                      "article" => array(
1938                                 "s" => "toggle_mark",
1939                                 "*s" => "toggle_publ",
1940                                 "u" => "toggle_unread",
1941                                 "*t" => "edit_tags",
1942                                 "*d" => "dismiss_selected",
1943                                 "*x" => "dismiss_read",
1944                                 "o" => "open_in_new_window",
1945                                 "c p" => "catchup_below",
1946                                 "c n" => "catchup_above",
1947                                 "*n" => "article_scroll_down",
1948                                 "*p" => "article_scroll_up",
1949                                 "a *w" => "toggle_widescreen",
1950                                 "e" => "email_article",
1951                                 "a q" => "close_article",
1952 //                      "article_selection" => array(
1953                                 "a a" => "select_all",
1954                                 "a u" => "select_unread",
1955                                 "a *u" => "select_marked",
1956                                 "a p" => "select_published",
1957                                 "a i" => "select_invert",
1958                                 "a n" => "select_none",
1959 //                      "feed" => array(
1960                                 "f r" => "feed_refresh",
1961                                 "f a" => "feed_unhide_read",
1962                                 "f s" => "feed_subscribe",
1963                                 "f e" => "feed_edit",
1964                                 "f q" => "feed_catchup",
1965                                 "f x" => "feed_reverse",
1966                                 "f *d" => "feed_debug_update",
1967                                 "f *c" => "toggle_combined_mode",
1968                                 "*q" => "catchup_all",
1969                                 "x" => "cat_toggle_collapse",
1970 //                      "goto" => array(
1971                                 "g a" => "goto_all",
1972                                 "g f" => "goto_fresh",
1973                                 "g s" => "goto_marked",
1974                                 "g p" => "goto_published",
1975                                 "g t" => "goto_tagcloud",
1976                                 "g *p" => "goto_prefs",
1977 //                      "other" => array(
1978                                 "(9)|Tab" => "select_article_cursor", // tab
1979                                 "c l" => "create_label",
1980                                 "c f" => "create_filter",
1981                                 "c s" => "collapse_sidebar",
1982                                 "^(191)|Ctrl+/" => "help_dialog",
1983                         );
1984
1985                 if (get_pref($link, 'COMBINED_DISPLAY_MODE')) {
1986                         $hotkeys["^(38)|Ctrl-up"] = "prev_article_noscroll";
1987                         $hotkeys["^(40)|Ctrl-down"] = "next_article_noscroll";
1988                 }
1989
1990                 global $pluginhost;
1991                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_HOTKEY_MAP) as $plugin) {
1992                         $hotkeys = $plugin->hook_hotkey_map($hotkeys);
1993                 }
1994
1995                 $prefixes = array();
1996
1997                 foreach (array_keys($hotkeys) as $hotkey) {
1998                         $pair = explode(" ", $hotkey, 2);
1999
2000                         if (count($pair) > 1 && !in_array($pair[0], $prefixes)) {
2001                                 array_push($prefixes, $pair[0]);
2002                         }
2003                 }
2004
2005                 return array($prefixes, $hotkeys);
2006         }
2007
2008         function make_runtime_info($link) {
2009                 $data = array();
2010
2011                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2012                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2013
2014                 $max_feed_id = db_fetch_result($result, 0, "mid");
2015                 $num_feeds = db_fetch_result($result, 0, "nf");
2016
2017                 $data["max_feed_id"] = (int) $max_feed_id;
2018                 $data["num_feeds"] = (int) $num_feeds;
2019
2020                 $data['last_article_id'] = getLastArticleId($link);
2021                 $data['cdm_expanded'] = get_pref($link, 'CDM_EXPANDED');
2022
2023                 if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
2024
2025                         $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
2026
2027                         if (time() - $_SESSION["daemon_stamp_check"] > 30) {
2028
2029                                 $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
2030
2031                                 if ($stamp) {
2032                                         $stamp_delta = time() - $stamp;
2033
2034                                         if ($stamp_delta > 1800) {
2035                                                 $stamp_check = 0;
2036                                         } else {
2037                                                 $stamp_check = 1;
2038                                                 $_SESSION["daemon_stamp_check"] = time();
2039                                         }
2040
2041                                         $data['daemon_stamp_ok'] = $stamp_check;
2042
2043                                         $stamp_fmt = date("Y.m.d, G:i", $stamp);
2044
2045                                         $data['daemon_stamp'] = $stamp_fmt;
2046                                 }
2047                         }
2048                 }
2049
2050                 if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
2051                                 $new_version_details = @check_for_update($link);
2052
2053                                 $data['new_version_available'] = (int) ($new_version_details != false);
2054
2055                                 $_SESSION["last_version_check"] = time();
2056                                 $_SESSION["version_data"] = $new_version_details;
2057                 }
2058
2059                 return $data;
2060         }
2061
2062         function search_to_sql($link, $search, $match_on) {
2063
2064                 $search_query_part = "";
2065
2066                 $keywords = explode(" ", $search);
2067                 $query_keywords = array();
2068
2069                 foreach ($keywords as $k) {
2070                         if (strpos($k, "-") === 0) {
2071                                 $k = substr($k, 1);
2072                                 $not = "NOT";
2073                         } else {
2074                                 $not = "";
2075                         }
2076
2077                         $commandpair = explode(":", mb_strtolower($k), 2);
2078
2079                         if ($commandpair[0] == "note" && $commandpair[1]) {
2080
2081                                 if ($commandpair[1] == "true")
2082                                         array_push($query_keywords, "($not (note IS NOT NULL AND note != ''))");
2083                                 else
2084                                         array_push($query_keywords, "($not (note IS NULL OR note = ''))");
2085
2086                         } else if ($commandpair[0] == "star" && $commandpair[1]) {
2087
2088                                 if ($commandpair[1] == "true")
2089                                         array_push($query_keywords, "($not (marked = true))");
2090                                 else
2091                                         array_push($query_keywords, "($not (marked = false))");
2092
2093                         } else if ($commandpair[0] == "pub" && $commandpair[1]) {
2094
2095                                 if ($commandpair[1] == "true")
2096                                         array_push($query_keywords, "($not (published = true))");
2097                                 else
2098                                         array_push($query_keywords, "($not (published = false))");
2099
2100                         } else if (strpos($k, "@") === 0) {
2101
2102                                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $_SESSION['uid']);
2103                                 $orig_ts = strtotime(substr($k, 1));
2104                                 $k = date("Y-m-d", convert_timestamp($orig_ts, $user_tz_string, 'UTC'));
2105
2106                                 //$k = date("Y-m-d", strtotime(substr($k, 1)));
2107
2108                                 array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
2109                         } else if ($match_on == "both") {
2110                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2111                                                 OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2112                         } else if ($match_on == "title") {
2113                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%'))");
2114                         } else if ($match_on == "content") {
2115                                 array_push($query_keywords, "(UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2116                         }
2117                 }
2118
2119                 $search_query_part = implode("AND", $query_keywords);
2120
2121                 return $search_query_part;
2122         }
2123
2124         function getParentCategories($link, $cat, $owner_uid) {
2125                 $rv = array();
2126
2127                 $result = db_query($link, "SELECT parent_cat FROM ttrss_feed_categories
2128                         WHERE id = '$cat' AND parent_cat IS NOT NULL AND owner_uid = $owner_uid");
2129
2130                 while ($line = db_fetch_assoc($result)) {
2131                         array_push($rv, $line["parent_cat"]);
2132                         $rv = array_merge($rv, getParentCategories($link, $line["parent_cat"], $owner_uid));
2133                 }
2134
2135                 return $rv;
2136         }
2137
2138         function getChildCategories($link, $cat, $owner_uid) {
2139                 $rv = array();
2140
2141                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories
2142                         WHERE parent_cat = '$cat' AND owner_uid = $owner_uid");
2143
2144                 while ($line = db_fetch_assoc($result)) {
2145                         array_push($rv, $line["id"]);
2146                         $rv = array_merge($rv, getChildCategories($link, $line["id"], $owner_uid));
2147                 }
2148
2149                 return $rv;
2150         }
2151
2152         function queryFeedHeadlines($link, $feed, $limit, $view_mode, $cat_view, $search, $search_mode, $match_on, $override_order = false, $offset = 0, $owner_uid = 0, $filter = false, $since_id = 0, $include_children = false, $ignore_vfeed_group = false) {
2153
2154                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2155
2156                 $ext_tables_part = "";
2157
2158                         if ($search) {
2159
2160                                 if (SPHINX_ENABLED) {
2161                                         $ids = join(",", @sphinx_search($search, 0, 500));
2162
2163                                         if ($ids)
2164                                                 $search_query_part = "ref_id IN ($ids) AND ";
2165                                         else
2166                                                 $search_query_part = "ref_id = -1 AND ";
2167
2168                                 } else {
2169                                         $search_query_part = search_to_sql($link, $search, $match_on);
2170                                         $search_query_part .= " AND ";
2171                                 }
2172
2173                         } else {
2174                                 $search_query_part = "";
2175                         }
2176
2177                         if ($filter) {
2178
2179                                 if (DB_TYPE == "pgsql") {
2180                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '14 days' ";
2181                                 } else {
2182                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL 14 DAY) ";
2183                                 }
2184
2185                                 $override_order = "updated DESC";
2186
2187                                 $filter_query_part = filter_to_sql($link, $filter, $owner_uid);
2188
2189                                 // Try to check if SQL regexp implementation chokes on a valid regexp
2190                                 $result = db_query($link, "SELECT true AS true_val FROM ttrss_entries,
2191                                         ttrss_user_entries, ttrss_feeds, ttrss_feed_categories
2192                                         WHERE $filter_query_part LIMIT 1", false);
2193
2194                                 if ($result) {
2195                                         $test = db_fetch_result($result, 0, "true_val");
2196
2197                                         if (!$test) {
2198                                                 $filter_query_part = "false AND";
2199                                         } else {
2200                                                 $filter_query_part .= " AND";
2201                                         }
2202                                 } else {
2203                                         $filter_query_part = "false AND";
2204                                 }
2205
2206                         } else {
2207                                 $filter_query_part = "";
2208                         }
2209
2210                         if ($since_id) {
2211                                 $since_id_part = "ttrss_entries.id > $since_id AND ";
2212                         } else {
2213                                 $since_id_part = "";
2214                         }
2215
2216                         $view_query_part = "";
2217
2218                         if ($view_mode == "adaptive" || $view_query_part == "noscores") {
2219                                 if ($search) {
2220                                         $view_query_part = " ";
2221                                 } else if ($feed != -1) {
2222                                         $unread = getFeedUnread($link, $feed, $cat_view);
2223
2224                                         if ($cat_view && $feed > 0 && $include_children)
2225                                                 $unread += getCategoryChildrenUnread($link, $feed);
2226
2227                                         if ($unread > 0) {
2228                                                 $view_query_part = " unread = true AND ";
2229                                         }
2230                                 }
2231                         }
2232
2233                         if ($view_mode == "marked") {
2234                                 $view_query_part = " marked = true AND ";
2235                         }
2236
2237                         if ($view_mode == "published") {
2238                                 $view_query_part = " published = true AND ";
2239                         }
2240
2241                         if ($view_mode == "unread") {
2242                                 $view_query_part = " unread = true AND ";
2243                         }
2244
2245                         if ($view_mode == "updated") {
2246                                 $view_query_part = " (last_read is null and unread = false) AND ";
2247                         }
2248
2249                         if ($limit > 0) {
2250                                 $limit_query_part = "LIMIT " . $limit;
2251                         }
2252
2253                         $allow_archived = false;
2254
2255                         $vfeed_query_part = "";
2256
2257                         // override query strategy and enable feed display when searching globally
2258                         if ($search && $search_mode == "all_feeds") {
2259                                 $query_strategy_part = "true";
2260                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2261                         /* tags */
2262                         } else if (!is_numeric($feed)) {
2263                                 $query_strategy_part = "true";
2264                                 $vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
2265                                         id = feed_id) as feed_title,";
2266                         } else if ($search && $search_mode == "this_cat") {
2267                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2268
2269                                 if ($feed > 0) {
2270                                         if ($include_children) {
2271                                                 $subcats = getChildCategories($link, $feed, $owner_uid);
2272                                                 array_push($subcats, $feed);
2273                                                 $cats_qpart = join(",", $subcats);
2274                                         } else {
2275                                                 $cats_qpart = $feed;
2276                                         }
2277
2278                                         $query_strategy_part = "ttrss_feeds.cat_id IN ($cats_qpart)";
2279
2280                                 } else {
2281                                         $query_strategy_part = "ttrss_feeds.cat_id IS NULL";
2282                                 }
2283
2284                         } else if ($feed > 0) {
2285
2286                                 if ($cat_view) {
2287
2288                                         if ($feed > 0) {
2289                                                 if ($include_children) {
2290                                                         # sub-cats
2291                                                         $subcats = getChildCategories($link, $feed, $owner_uid);
2292
2293                                                         array_push($subcats, $feed);
2294                                                         $query_strategy_part = "cat_id IN (".
2295                                                                         implode(",", $subcats).")";
2296
2297                                                 } else {
2298                                                         $query_strategy_part = "cat_id = '$feed'";
2299                                                 }
2300
2301                                         } else {
2302                                                 $query_strategy_part = "cat_id IS NULL";
2303                                         }
2304
2305                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2306
2307                                 } else {
2308                                         $query_strategy_part = "feed_id = '$feed'";
2309                                 }
2310                         } else if ($feed == 0 && !$cat_view) { // archive virtual feed
2311                                 $query_strategy_part = "feed_id IS NULL";
2312                                 $allow_archived = true;
2313                         } else if ($feed == 0 && $cat_view) { // uncategorized
2314                                 $query_strategy_part = "cat_id IS NULL AND feed_id IS NOT NULL";
2315                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2316                         } else if ($feed == -1) { // starred virtual feed
2317                                 $query_strategy_part = "marked = true";
2318                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2319                                 $allow_archived = true;
2320
2321                                 if (!$override_order) $override_order = "last_marked DESC, updated DESC";
2322
2323                         } else if ($feed == -2) { // published virtual feed OR labels category
2324
2325                                 if (!$cat_view) {
2326                                         $query_strategy_part = "published = true";
2327                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2328                                         $allow_archived = true;
2329
2330                                         if (!$override_order) $override_order = "last_published DESC, updated DESC";
2331                                 } else {
2332                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2333
2334                                         $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2335
2336                                         $query_strategy_part = "ttrss_labels2.id = ttrss_user_labels2.label_id AND
2337                                                 ttrss_user_labels2.article_id = ref_id";
2338
2339                                 }
2340                         } else if ($feed == -6) { // recently read
2341                                 $query_strategy_part = "unread = false AND last_read IS NOT NULL";
2342                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2343                                 $allow_archived = true;
2344
2345                                 if (!$override_order) $override_order = "last_read DESC";
2346                         } else if ($feed == -3) { // fresh virtual feed
2347                                 $query_strategy_part = "unread = true AND score >= 0";
2348
2349                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
2350
2351                                 if (DB_TYPE == "pgsql") {
2352                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
2353                                 } else {
2354                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
2355                                 }
2356
2357                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2358                         } else if ($feed == -4) { // all articles virtual feed
2359                                 $query_strategy_part = "true";
2360                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2361                         } else if ($feed <= -10) { // labels
2362                                 $label_id = -$feed - 11;
2363
2364                                 $query_strategy_part = "label_id = '$label_id' AND
2365                                         ttrss_labels2.id = ttrss_user_labels2.label_id AND
2366                                         ttrss_user_labels2.article_id = ref_id";
2367
2368                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2369                                 $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2370                                 $allow_archived = true;
2371
2372                         } else {
2373                                 $query_strategy_part = "true";
2374                         }
2375
2376                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
2377                                 $date_sort_field = "updated";
2378                         } else {
2379                                 $date_sort_field = "date_entered";
2380                         }
2381
2382                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
2383                                 $order_by = "$date_sort_field";
2384                         } else {
2385                                 $order_by = "$date_sort_field DESC";
2386                         }
2387
2388                         if ($view_mode != "noscores") {
2389                                 $order_by = "score DESC, $order_by";
2390                         }
2391
2392                         if ($override_order) {
2393                                 $order_by = $override_order;
2394                         }
2395
2396                         $feed_title = "";
2397
2398                         if ($search) {
2399                                 $feed_title = T_sprintf("Search results: %s", $search);
2400                         } else {
2401                                 if ($cat_view) {
2402                                         $feed_title = getCategoryTitle($link, $feed);
2403                                 } else {
2404                                         if (is_numeric($feed) && $feed > 0) {
2405                                                 $result = db_query($link, "SELECT title,site_url,last_error
2406                                                         FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = $owner_uid");
2407
2408                                                 $feed_title = db_fetch_result($result, 0, "title");
2409                                                 $feed_site_url = db_fetch_result($result, 0, "site_url");
2410                                                 $last_error = db_fetch_result($result, 0, "last_error");
2411                                         } else {
2412                                                 $feed_title = getFeedTitle($link, $feed);
2413                                         }
2414                                 }
2415                         }
2416
2417                         $content_query_part = "content as content_preview, cached_content, ";
2418
2419                         if (is_numeric($feed)) {
2420
2421                                 if ($feed >= 0) {
2422                                         $feed_kind = "Feeds";
2423                                 } else {
2424                                         $feed_kind = "Labels";
2425                                 }
2426
2427                                 if ($limit_query_part) {
2428                                         $offset_query_part = "OFFSET $offset";
2429                                 }
2430
2431                                 // proper override_order applied above
2432                                 if ($vfeed_query_part && !$ignore_vfeed_group && get_pref($link, 'VFEED_GROUP_BY_FEED', $owner_uid)) {
2433                                         if (!$override_order) {
2434                                                 $order_by = "ttrss_feeds.title, $order_by";
2435                                         } else {
2436                                                 $order_by = "ttrss_feeds.title, $override_order";
2437                                         }
2438                                 }
2439
2440                                 if (!$allow_archived) {
2441                                         $from_qpart = "ttrss_entries,ttrss_user_entries,ttrss_feeds$ext_tables_part";
2442                                         $feed_check_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
2443
2444                                 } else {
2445                                         $from_qpart = "ttrss_entries$ext_tables_part,ttrss_user_entries
2446                                                 LEFT JOIN ttrss_feeds ON (feed_id = ttrss_feeds.id)";
2447                                 }
2448
2449                                 $query = "SELECT DISTINCT
2450                                                 date_entered,
2451                                                 guid,
2452                                                 ttrss_entries.id,ttrss_entries.title,
2453                                                 updated,
2454                                                 label_cache,
2455                                                 tag_cache,
2456                                                 always_display_enclosures,
2457                                                 site_url,
2458                                                 note,
2459                                                 num_comments,
2460                                                 comments,
2461                                                 int_id,
2462                                                 unread,feed_id,marked,published,link,last_read,orig_feed_id,
2463                                                 last_marked, last_published,
2464                                                 ".SUBSTRING_FOR_DATE."(last_read,1,19) as last_read_noms,
2465                                                 $vfeed_query_part
2466                                                 $content_query_part
2467                                                 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated_noms,
2468                                                 author,score
2469                                         FROM
2470                                                 $from_qpart
2471                                         WHERE
2472                                         $feed_check_qpart
2473                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
2474                                         ttrss_user_entries.owner_uid = '$owner_uid' AND
2475                                         $search_query_part
2476                                         $filter_query_part
2477                                         $view_query_part
2478                                         $since_id_part
2479                                         $query_strategy_part ORDER BY $order_by
2480                                         $limit_query_part $offset_query_part";
2481
2482                                 if ($_REQUEST["debug"]) print $query;
2483
2484                                 $result = db_query($link, $query);
2485
2486                         } else {
2487                                 // browsing by tag
2488
2489                                 $select_qpart = "SELECT DISTINCT " .
2490                                                                 "date_entered," .
2491                                                                 "guid," .
2492                                                                 "note," .
2493                                                                 "ttrss_entries.id as id," .
2494                                                                 "title," .
2495                                                                 "updated," .
2496                                                                 "unread," .
2497                                                                 "feed_id," .
2498                                                                 "orig_feed_id," .
2499                                                                 "marked," .
2500                                                                 "num_comments, " .
2501                                                                 "comments, " .
2502                                                                 "tag_cache," .
2503                                                                 "label_cache," .
2504                                                                 "link," .
2505                                                                 "last_read," .
2506                                                                 "last_marked, last_published, " .
2507                                                                 SUBSTRING_FOR_DATE . "(last_read,1,19) as last_read_noms," .
2508                                                                 $since_id_part .
2509                                                                 $vfeed_query_part .
2510                                                                 $content_query_part .
2511                                                                 SUBSTRING_FOR_DATE . "(updated,1,19) as updated_noms," .
2512                                                                 "score ";
2513
2514                                 $feed_kind = "Tags";
2515                                 $all_tags = explode(",", $feed);
2516                                 if ($search_mode == 'any') {
2517                                         $tag_sql = "tag_name in (" . implode(", ", array_map("db_quote", $all_tags)) . ")";
2518                                         $from_qpart = " FROM ttrss_entries,ttrss_user_entries,ttrss_tags ";
2519                                         $where_qpart = " WHERE " .
2520                                                                    "ref_id = ttrss_entries.id AND " .
2521                                                                    "ttrss_user_entries.owner_uid = $owner_uid AND " .
2522                                                                    "post_int_id = int_id AND $tag_sql AND " .
2523                                                                    $view_query_part .
2524                                                                    $search_query_part .
2525                                                                    $query_strategy_part . " ORDER BY $order_by " .
2526                                                                    $limit_query_part;
2527
2528                                 } else {
2529                                         $i = 1;
2530                                         $sub_selects = array();
2531                                         $sub_ands = array();
2532                                         foreach ($all_tags as $term) {
2533                                                 array_push($sub_selects, "(SELECT post_int_id from ttrss_tags WHERE tag_name = " . db_quote($term) . " AND owner_uid = $owner_uid) as A$i");
2534                                                 $i++;
2535                                         }
2536                                         if ($i > 2) {
2537                                                 $x = 1;
2538                                                 $y = 2;
2539                                                 do {
2540                                                         array_push($sub_ands, "A$x.post_int_id = A$y.post_int_id");
2541                                                         $x++;
2542                                                         $y++;
2543                                                 } while ($y < $i);
2544                                         }
2545                                         array_push($sub_ands, "A1.post_int_id = ttrss_user_entries.int_id and ttrss_user_entries.owner_uid = $owner_uid");
2546                                         array_push($sub_ands, "ttrss_user_entries.ref_id = ttrss_entries.id");
2547                                         $from_qpart = " FROM " . implode(", ", $sub_selects) . ", ttrss_user_entries, ttrss_entries";
2548                                         $where_qpart = " WHERE " . implode(" AND ", $sub_ands);
2549                                 }
2550                                 //                              error_log("TAG SQL: " . $tag_sql);
2551                                 // $tag_sql = "tag_name = '$feed'";   DEFAULT way
2552
2553                                 //                              error_log("[". $select_qpart . "][" . $from_qpart . "][" .$where_qpart . "]");
2554                                 $result = db_query($link, $select_qpart . $from_qpart . $where_qpart);
2555                         }
2556
2557                         return array($result, $feed_title, $feed_site_url, $last_error);
2558
2559         }
2560
2561         function sanitize($link, $str, $force_strip_tags = false, $owner = false, $site_url = false) {
2562                 if (!$owner) $owner = $_SESSION["uid"];
2563
2564                 $res = trim($str); if (!$res) return '';
2565
2566                 if (get_pref($link, "STRIP_IMAGES", $owner)) {
2567                         $res = preg_replace('/<img[^>]+>/is', '', $res);
2568                 }
2569
2570                 if (strpos($res, "href=") === false)
2571                         $res = rewrite_urls($res);
2572
2573                 $charset_hack = '<head>
2574                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
2575                 </head>';
2576
2577                 $res = trim($res); if (!$res) return '';
2578
2579                 libxml_use_internal_errors(true);
2580
2581                 $doc = new DOMDocument();
2582                 $doc->loadHTML($charset_hack . $res);
2583                 $xpath = new DOMXPath($doc);
2584
2585                 $entries = $xpath->query('(//a[@href]|//img[@src])');
2586
2587                 foreach ($entries as $entry) {
2588
2589                         if ($site_url) {
2590
2591                                 if ($entry->hasAttribute('href'))
2592                                         $entry->setAttribute('href',
2593                                                 rewrite_relative_url($site_url, $entry->getAttribute('href')));
2594
2595                                 if ($entry->hasAttribute('src')) {
2596                                         $src = rewrite_relative_url($site_url, $entry->getAttribute('src'));
2597
2598                                         $cached_filename = CACHE_DIR . '/images/' . sha1($src) . '.png';
2599
2600                                         if (file_exists($cached_filename)) {
2601                                                 $src = SELF_URL_PATH . '/image.php?hash=' . sha1($src);
2602                                         }
2603
2604                                         $entry->setAttribute('src', $src);
2605                                 }
2606                         }
2607
2608                         if (strtolower($entry->nodeName) == "a") {
2609                                 $entry->setAttribute("target", "_blank");
2610                         }
2611                 }
2612
2613                 $entries = $xpath->query('//iframe');
2614                 foreach ($entries as $entry) {
2615                         $entry->setAttribute('sandbox', true);
2616                 }
2617
2618                 $doc->removeChild($doc->firstChild); //remove doctype
2619                 $doc = strip_harmful_tags($doc);
2620                 $res = $doc->saveHTML();
2621                 return $res;
2622         }
2623
2624         function strip_harmful_tags($doc) {
2625                 $entries = $doc->getElementsByTagName("*");
2626
2627                 $allowed_elements = array('a', 'address', 'audio',
2628                         'b', 'big', 'blockquote', 'body', 'br', 'cite',
2629                         'code', 'dd', 'del', 'details', 'div', 'dl',
2630                         'dt', 'em', 'footer', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6',
2631                         'header', 'html', 'i', 'img', 'ins', 'kbd',
2632                         'li', 'nav', 'ol', 'p', 'pre', 'q', 's','small',
2633                         'source', 'span', 'strike', 'strong', 'sub', 'summary',
2634                         'sup', 'table', 'tbody', 'td', 'tfoot', 'th', 'thead',
2635                         'tr', 'track', 'tt', 'u', 'ul', 'var', 'wbr', 'video' );
2636
2637                 if ($_SESSION['hasSandbox']) array_push($allowed_elements, 'iframe');
2638
2639                 $disallowed_attributes = array('id', 'style', 'class');
2640
2641                 foreach ($entries as $entry) {
2642                         if (!in_array($entry->nodeName, $allowed_elements)) {
2643                                 $entry->parentNode->removeChild($entry);
2644                         }
2645
2646                         if ($entry->hasAttributes()) {
2647                                 foreach (iterator_to_array($entry->attributes) as $attr) {
2648
2649                                         if (strpos($attr->nodeName, 'on') === 0) {
2650                                                 $entry->removeAttributeNode($attr);
2651                                         }
2652
2653                                         if (in_array($attr->nodeName, $disallowed_attributes)) {
2654                                                 $entry->removeAttributeNode($attr);
2655                                         }
2656                                 }
2657                         }
2658                 }
2659
2660                 return $doc;
2661         }
2662
2663         function check_for_update($link) {
2664                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2665                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION .
2666                                 "&iid=" . sha1(SELF_URL_PATH);
2667
2668                         $version_data = @fetch_file_contents($version_url);
2669
2670                         if ($version_data) {
2671                                 $version_data = json_decode($version_data, true);
2672                                 if ($version_data && $version_data['version']) {
2673
2674                                         if (version_compare(VERSION, $version_data['version']) == -1) {
2675                                                 return $version_data;
2676                                         }
2677                                 }
2678                         }
2679                 }
2680                 return false;
2681         }
2682
2683         function catchupArticlesById($link, $ids, $cmode, $owner_uid = false) {
2684
2685                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2686                 if (count($ids) == 0) return;
2687
2688                 $tmp_ids = array();
2689
2690                 foreach ($ids as $id) {
2691                         array_push($tmp_ids, "ref_id = '$id'");
2692                 }
2693
2694                 $ids_qpart = join(" OR ", $tmp_ids);
2695
2696                 if ($cmode == 0) {
2697                         db_query($link, "UPDATE ttrss_user_entries SET
2698                         unread = false,last_read = NOW()
2699                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2700                 } else if ($cmode == 1) {
2701                         db_query($link, "UPDATE ttrss_user_entries SET
2702                         unread = true
2703                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2704                 } else {
2705                         db_query($link, "UPDATE ttrss_user_entries SET
2706                         unread = NOT unread,last_read = NOW()
2707                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2708                 }
2709
2710                 /* update ccache */
2711
2712                 $result = db_query($link, "SELECT DISTINCT feed_id FROM ttrss_user_entries
2713                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2714
2715                 while ($line = db_fetch_assoc($result)) {
2716                         ccache_update($link, $line["feed_id"], $owner_uid);
2717                 }
2718         }
2719
2720         function get_article_tags($link, $id, $owner_uid = 0, $tag_cache = false) {
2721
2722                 $a_id = db_escape_string($id);
2723
2724                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2725
2726                 $query = "SELECT DISTINCT tag_name,
2727                         owner_uid as owner FROM
2728                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
2729                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
2730
2731                 $obj_id = md5("TAGS:$owner_uid:$id");
2732                 $tags = array();
2733
2734                 /* check cache first */
2735
2736                 if ($tag_cache === false) {
2737                         $result = db_query($link, "SELECT tag_cache FROM ttrss_user_entries
2738                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2739
2740                         $tag_cache = db_fetch_result($result, 0, "tag_cache");
2741                 }
2742
2743                 if ($tag_cache) {
2744                         $tags = explode(",", $tag_cache);
2745                 } else {
2746
2747                         /* do it the hard way */
2748
2749                         $tmp_result = db_query($link, $query);
2750
2751                         while ($tmp_line = db_fetch_assoc($tmp_result)) {
2752                                 array_push($tags, $tmp_line["tag_name"]);
2753                         }
2754
2755                         /* update the cache */
2756
2757                         $tags_str = db_escape_string(join(",", $tags));
2758
2759                         db_query($link, "UPDATE ttrss_user_entries
2760                                 SET tag_cache = '$tags_str' WHERE ref_id = '$id'
2761                                 AND owner_uid = $owner_uid");
2762                 }
2763
2764                 return $tags;
2765         }
2766
2767         function trim_array($array) {
2768                 $tmp = $array;
2769                 array_walk($tmp, 'trim');
2770                 return $tmp;
2771         }
2772
2773         function tag_is_valid($tag) {
2774                 if ($tag == '') return false;
2775                 if (preg_match("/^[0-9]*$/", $tag)) return false;
2776                 if (mb_strlen($tag) > 250) return false;
2777
2778                 if (function_exists('iconv')) {
2779                         $tag = iconv("utf-8", "utf-8", $tag);
2780                 }
2781
2782                 if (!$tag) return false;
2783
2784                 return true;
2785         }
2786
2787         function render_login_form($link, $form_id = 0) {
2788                 switch ($form_id) {
2789                 case 0:
2790                         require_once "login_form.php";
2791                         break;
2792                 case 1:
2793                         require_once "mobile/login_form.php";
2794                         break;
2795                 }
2796                 exit;
2797         }
2798
2799         // from http://developer.apple.com/internet/safari/faq.html
2800         function no_cache_incantation() {
2801                 header("Expires: Mon, 22 Dec 1980 00:00:00 GMT"); // Happy birthday to me :)
2802                 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
2803                 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); // HTTP/1.1
2804                 header("Cache-Control: post-check=0, pre-check=0", false);
2805                 header("Pragma: no-cache"); // HTTP/1.0
2806         }
2807
2808         function format_warning($msg, $id = "") {
2809                 global $link;
2810                 return "<div class=\"warning\" id=\"$id\">
2811                         <img src=\"".theme_image($link, "images/sign_excl.svg")."\">$msg</div>";
2812         }
2813
2814         function format_notice($msg, $id = "") {
2815                 global $link;
2816                 return "<div class=\"notice\" id=\"$id\">
2817                         <img src=\"".theme_image($link, "images/sign_info.svg")."\">$msg</div>";
2818         }
2819
2820         function format_error($msg, $id = "") {
2821                 global $link;
2822                 return "<div class=\"error\" id=\"$id\">
2823                         <img src=\"".theme_image($link, "images/sign_excl.svg")."\">$msg</div>";
2824         }
2825
2826         function print_notice($msg) {
2827                 return print format_notice($msg);
2828         }
2829
2830         function print_warning($msg) {
2831                 return print format_warning($msg);
2832         }
2833
2834         function print_error($msg) {
2835                 return print format_error($msg);
2836         }
2837
2838
2839         function T_sprintf() {
2840                 $args = func_get_args();
2841                 return vsprintf(__(array_shift($args)), $args);
2842         }
2843
2844         function format_inline_player($link, $url, $ctype) {
2845
2846                 $entry = "";
2847
2848                 if (strpos($ctype, "audio/") === 0) {
2849
2850                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
2851                                 strpos($_SERVER['HTTP_USER_AGENT'], "Chrome") !== false ||
2852                                 strpos($_SERVER['HTTP_USER_AGENT'], "Safari") !== false )) {
2853
2854                                 $id = 'AUDIO-' . uniqid();
2855
2856                                 $entry .= "<audio id=\"$id\"\" controls style='display : none'>
2857                                         <source type=\"$ctype\" src=\"$url\"></source>
2858                                         </audio>";
2859
2860                                 $entry .= "<span onclick=\"player(this)\"
2861                                         title=\"".__("Click to play")."\" status=\"0\"
2862                                         class=\"player\" audio-id=\"$id\">".__("Play")."</span>";
2863
2864                         } else {
2865
2866                                 $entry .= "<object type=\"application/x-shockwave-flash\"
2867                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
2868                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
2869                                         <param name=\"movie\"
2870                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
2871                                         </object>";
2872                         }
2873
2874                         if ($entry) $entry .= "&nbsp;" . basename($url);
2875
2876                         return $entry;
2877
2878                 }
2879
2880                 return "";
2881
2882 /*              $filename = substr($url, strrpos($url, "/")+1);
2883
2884                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
2885                         $filename . " (" . $ctype . ")" . "</a>"; */
2886
2887         }
2888
2889         function format_article($link, $id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
2890                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2891
2892                 $rv = array();
2893
2894                 $rv['id'] = $id;
2895
2896                 /* we can figure out feed_id from article id anyway, why do we
2897                  * pass feed_id here? let's ignore the argument :( */
2898
2899                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
2900                         WHERE ref_id = '$id'");
2901
2902                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
2903
2904                 $rv['feed_id'] = $feed_id;
2905
2906                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
2907
2908                 if ($mark_as_read) {
2909                         $result = db_query($link, "UPDATE ttrss_user_entries
2910                                 SET unread = false,last_read = NOW()
2911                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2912
2913                         ccache_update($link, $feed_id, $owner_uid);
2914                 }
2915
2916                 $result = db_query($link, "SELECT id,title,link,content,feed_id,comments,int_id,
2917                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
2918                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
2919                         num_comments,
2920                         tag_cache,
2921                         author,
2922                         orig_feed_id,
2923                         note,
2924                         cached_content
2925                         FROM ttrss_entries,ttrss_user_entries
2926                         WHERE   id = '$id' AND ref_id = id AND owner_uid = $owner_uid");
2927
2928                 if ($result) {
2929
2930                         $line = db_fetch_assoc($result);
2931
2932                         $tag_cache = $line["tag_cache"];
2933
2934                         $line["tags"] = get_article_tags($link, $id, $owner_uid, $line["tag_cache"]);
2935                         unset($line["tag_cache"]);
2936
2937                         $line["content"] = sanitize($link, $line["content"], false, $owner_uid, $line["site_url"]);
2938
2939                         global $pluginhost;
2940
2941                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_RENDER_ARTICLE) as $p) {
2942                                 $line = $p->hook_render_article($line);
2943                         }
2944
2945                         $num_comments = $line["num_comments"];
2946                         $entry_comments = "";
2947
2948                         if ($num_comments > 0) {
2949                                 if ($line["comments"]) {
2950                                         $comments_url = htmlspecialchars($line["comments"]);
2951                                 } else {
2952                                         $comments_url = htmlspecialchars($line["link"]);
2953                                 }
2954                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
2955                         } else {
2956                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
2957                                         $entry_comments = "<a target='_blank' href=\"".htmlspecialchars($line["comments"])."\">comments</a>";
2958                                 }
2959                         }
2960
2961                         if ($zoom_mode) {
2962                                 header("Content-Type: text/html");
2963                                 $rv['content'] .= "<html><head>
2964                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
2965                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
2966                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
2967                                         </head><body>";
2968                         }
2969
2970                         $title_escaped = htmlspecialchars($line['title']);
2971
2972                         $rv['content'] .= "<div id=\"PTITLE-FULL-$id\" style=\"display : none\">" .
2973                                 strip_tags($line['title']) . "</div>";
2974
2975                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
2976
2977                         $rv['content'] .= "<div class=\"postHeader\" id=\"POSTHDR-$id\">";
2978
2979                         $entry_author = $line["author"];
2980
2981                         if ($entry_author) {
2982                                 $entry_author = __(" - ") . $entry_author;
2983                         }
2984
2985                         $parsed_updated = make_local_datetime($link, $line["updated"], true,
2986                                 $owner_uid, true);
2987
2988                         $rv['content'] .= "<div class=\"postDate\">$parsed_updated</div>";
2989
2990                         if ($line["link"]) {
2991                                 $rv['content'] .= "<div class='postTitle'><a target='_blank'
2992                                         title=\"".htmlspecialchars($line['title'])."\"
2993                                         href=\"" .
2994                                         htmlspecialchars($line["link"]) . "\">" .
2995                                         $line["title"] .
2996                                         "<span class='author'>$entry_author</span></a></div>";
2997                         } else {
2998                                 $rv['content'] .= "<div class='postTitle'>" . $line["title"] . "$entry_author</div>";
2999                         }
3000
3001                         $tags_str = format_tags_string($line["tags"], $id);
3002                         $tags_str_full = join(", ", $line["tags"]);
3003
3004                         if (!$tags_str_full) $tags_str_full = __("no tags");
3005
3006                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
3007
3008                         $rv['content'] .= "<div class='postTags' style='float : right'>
3009                                 <img src='".theme_image($link, 'images/tag.png')."'
3010                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
3011
3012                         if (!$zoom_mode) {
3013                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
3014                                         <a title=\"".__('Edit tags for this article')."\"
3015                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
3016
3017                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
3018                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
3019                                         position=\"below\">$tags_str_full</div>";
3020
3021                                 global $pluginhost;
3022
3023                                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_ARTICLE_BUTTON) as $p) {
3024                                         $rv['content'] .= $p->hook_article_button($line);
3025                                 }
3026
3027
3028                         } else {
3029                                 $tags_str = strip_tags($tags_str);
3030                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
3031                         }
3032                         $rv['content'] .= "</div>";
3033                         $rv['content'] .= "<div clear='both'>$entry_comments</div>";
3034
3035                         if ($line["orig_feed_id"]) {
3036
3037                                 $tmp_result = db_query($link, "SELECT * FROM ttrss_archived_feeds
3038                                         WHERE id = ".$line["orig_feed_id"]);
3039
3040                                 if (db_num_rows($tmp_result) != 0) {
3041
3042                                         $rv['content'] .= "<div clear='both'>";
3043                                         $rv['content'] .= __("Originally from:");
3044
3045                                         $rv['content'] .= "&nbsp;";
3046
3047                                         $tmp_line = db_fetch_assoc($tmp_result);
3048
3049                                         $rv['content'] .= "<a target='_blank'
3050                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
3051                                                 $tmp_line['title'] . "</a>";
3052
3053                                         $rv['content'] .= "&nbsp;";
3054
3055                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3056                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.svg'></a>";
3057
3058                                         $rv['content'] .= "</div>";
3059                                 }
3060                         }
3061
3062                         $rv['content'] .= "</div>";
3063
3064                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3065                                 if ($line['note']) {
3066                                         $rv['content'] .= format_article_note($id, $line['note'], !$zoom_mode);
3067                                 }
3068                         $rv['content'] .= "</div>";
3069
3070                         $rv['content'] .= "<div class=\"postContent\">";
3071
3072                         // N-grams
3073
3074                         if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_RELATED_THRESHOLD')) {
3075
3076                                 $ngram_result = db_query($link, "SELECT id,title FROM
3077                                                 ttrss_entries,ttrss_user_entries
3078                                         WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
3079                                                 AND similarity(title, '$title_escaped') >= "._NGRAM_TITLE_RELATED_THRESHOLD."
3080                                                 AND title != '$title_escaped'
3081                                                 AND owner_uid = $owner_uid");
3082
3083                                 if (db_num_rows($ngram_result) > 0) {
3084                                         $rv['content'] .= "<div dojoType=\"dijit.form.DropDownButton\">".
3085                                                 "<span>" . __('Related')."</span>";
3086                                         $rv['content'] .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3087
3088                                         while ($nline = db_fetch_assoc($ngram_result)) {
3089                                                 $rv['content'] .= "<div onclick=\"hlOpenInNewTab(null,".$nline['id'].")\"
3090                                                         dojoType=\"dijit.MenuItem\">".$nline['title']."</div>";
3091
3092                                         }
3093                                         $rv['content'] .= "</div></div><br/";
3094                                 }
3095                         }
3096
3097                         $rv['content'] .= $line["content"];
3098
3099                         $rv['content'] .= format_article_enclosures($link, $id,
3100                                 $always_display_enclosures, $line["content"]);
3101
3102                         $rv['content'] .= "</div>";
3103
3104                         $rv['content'] .= "</div>";
3105
3106                 }
3107
3108                 if ($zoom_mode) {
3109                         $rv['content'] .= "
3110                                 <div style=\"text-align : center\">
3111                                 <button onclick=\"return window.close()\">".
3112                                         __("Close this window")."</button></div>";
3113                         $rv['content'] .= "</body></html>";
3114                 }
3115
3116                 return $rv;
3117
3118         }
3119
3120         function print_checkpoint($n, $s) {
3121                 $ts = microtime(true);
3122                 echo sprintf("<!-- CP[$n] %.4f seconds -->", $ts - $s);
3123                 return $ts;
3124         }
3125
3126         function sanitize_tag($tag) {
3127                 $tag = trim($tag);
3128
3129                 $tag = mb_strtolower($tag, 'utf-8');
3130
3131                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3132
3133 //              $tag = str_replace('"', "", $tag);
3134 //              $tag = str_replace("+", " ", $tag);
3135                 $tag = str_replace("technorati tag: ", "", $tag);
3136
3137                 return $tag;
3138         }
3139
3140         function get_self_url_prefix() {
3141                 if (strrpos(SELF_URL_PATH, "/") === strlen(SELF_URL_PATH)-1) {
3142                         return substr(SELF_URL_PATH, 0, strlen(SELF_URL_PATH)-1);
3143                 } else {
3144                         return SELF_URL_PATH;
3145                 }
3146         }
3147
3148         /**
3149          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3150          *
3151          * @return string The Mozilla Firefox feed adding URL.
3152          */
3153         function add_feed_url() {
3154                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3155
3156                 $url_path = get_self_url_prefix() .
3157                         "/public.php?op=subscribe&feed_url=%s";
3158                 return $url_path;
3159         } // function add_feed_url
3160
3161         function encrypt_password($pass, $salt = '', $mode2 = false) {
3162                 if ($salt && $mode2) {
3163                         return "MODE2:" . hash('sha256', $salt . $pass);
3164                 } else if ($salt) {
3165                         return "SHA1X:" . sha1("$salt:$pass");
3166                 } else {
3167                         return "SHA1:" . sha1($pass);
3168                 }
3169         } // function encrypt_password
3170
3171         function load_filters($link, $feed_id, $owner_uid, $action_id = false) {
3172                 $filters = array();
3173
3174                 $cat_id = (int)getFeedCategory($link, $feed_id);
3175
3176                 $result = db_query($link, "SELECT * FROM ttrss_filters2 WHERE
3177                         owner_uid = $owner_uid AND enabled = true");
3178
3179                 $check_cats = join(",", array_merge(
3180                         getParentCategories($link, $cat_id, $owner_uid),
3181                         array($cat_id)));
3182
3183                 while ($line = db_fetch_assoc($result)) {
3184                         $filter_id = $line["id"];
3185
3186                         $result2 = db_query($link, "SELECT
3187                                 r.reg_exp, r.feed_id, r.cat_id, r.cat_filter, t.name AS type_name
3188                                 FROM ttrss_filters2_rules AS r,
3189                                 ttrss_filter_types AS t
3190                                 WHERE
3191                                         (cat_id IS NULL OR cat_id IN ($check_cats)) AND
3192                                         (feed_id IS NULL OR feed_id = '$feed_id') AND
3193                                         filter_type = t.id AND filter_id = '$filter_id'");
3194
3195                         $rules = array();
3196                         $actions = array();
3197
3198                         while ($rule_line = db_fetch_assoc($result2)) {
3199 #                               print_r($rule_line);
3200
3201                                 $rule = array();
3202                                 $rule["reg_exp"] = $rule_line["reg_exp"];
3203                                 $rule["type"] = $rule_line["type_name"];
3204
3205                                 array_push($rules, $rule);
3206                         }
3207
3208                         $result2 = db_query($link, "SELECT a.action_param,t.name AS type_name
3209                                 FROM ttrss_filters2_actions AS a,
3210                                 ttrss_filter_actions AS t
3211                                 WHERE
3212                                         action_id = t.id AND filter_id = '$filter_id'");
3213
3214                         while ($action_line = db_fetch_assoc($result2)) {
3215 #                               print_r($action_line);
3216
3217                                 $action = array();
3218                                 $action["type"] = $action_line["type_name"];
3219                                 $action["param"] = $action_line["action_param"];
3220
3221                                 array_push($actions, $action);
3222                         }
3223
3224
3225                         $filter = array();
3226                         $filter["match_any_rule"] = sql_bool_to_bool($line["match_any_rule"]);
3227                         $filter["rules"] = $rules;
3228                         $filter["actions"] = $actions;
3229
3230                         if (count($rules) > 0 && count($actions) > 0) {
3231                                 array_push($filters, $filter);
3232                         }
3233                 }
3234
3235                 return $filters;
3236         }
3237
3238         function get_score_pic($score) {
3239                 if ($score > 100) {
3240                         return "score_high.png";
3241                 } else if ($score > 0) {
3242                         return "score_half_high.png";
3243                 } else if ($score < -100) {
3244                         return "score_low.png";
3245                 } else if ($score < 0) {
3246                         return "score_half_low.png";
3247                 } else {
3248                         return "score_neutral.png";
3249                 }
3250         }
3251
3252         function feed_has_icon($id) {
3253                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3254         }
3255
3256         function init_connection($link) {
3257                 if ($link) {
3258
3259                         if (DB_TYPE == "pgsql") {
3260                                 pg_query($link, "set client_encoding = 'UTF-8'");
3261                                 pg_set_client_encoding("UNICODE");
3262                                 pg_query($link, "set datestyle = 'ISO, european'");
3263                                 pg_query($link, "set TIME ZONE 0");
3264                         } else {
3265                                 db_query($link, "SET time_zone = '+0:0'");
3266
3267                                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
3268                                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
3269                                 }
3270                         }
3271
3272                         global $pluginhost;
3273
3274                         $pluginhost = new PluginHost($link);
3275                         $pluginhost->load(PLUGINS, $pluginhost::KIND_ALL);
3276
3277                         return true;
3278                 } else {
3279                         print "Unable to connect to database:" . db_last_error();
3280                         return false;
3281                 }
3282         }
3283
3284         function format_tags_string($tags, $id) {
3285
3286                 $tags_str = "";
3287                 $tags_nolinks_str = "";
3288
3289                 $num_tags = 0;
3290
3291                 $tag_limit = 6;
3292
3293                 $formatted_tags = array();
3294
3295                 foreach ($tags as $tag) {
3296                         $num_tags++;
3297                         $tag_escaped = str_replace("'", "\\'", $tag);
3298
3299                         if (mb_strlen($tag) > 30) {
3300                                 $tag = truncate_string($tag, 30);
3301                         }
3302
3303                         $tag_str = "<a href=\"javascript:viewfeed('$tag_escaped')\">$tag</a>";
3304
3305                         array_push($formatted_tags, $tag_str);
3306
3307                         $tmp_tags_str = implode(", ", $formatted_tags);
3308
3309                         if ($num_tags == $tag_limit || mb_strlen($tmp_tags_str) > 150) {
3310                                 break;
3311                         }
3312                 }
3313
3314                 $tags_str = implode(", ", $formatted_tags);
3315
3316                 if ($num_tags < count($tags)) {
3317                         $tags_str .= ", &hellip;";
3318                 }
3319
3320                 if ($num_tags == 0) {
3321                         $tags_str = __("no tags");
3322                 }
3323
3324                 return $tags_str;
3325
3326         }
3327
3328         function format_article_labels($labels, $id) {
3329
3330                 $labels_str = "";
3331
3332                 foreach ($labels as $l) {
3333                         $labels_str .= sprintf("<span class='hlLabelRef'
3334                                 style='color : %s; background-color : %s'>%s</span>",
3335                                         $l[2], $l[3], $l[1]);
3336                         }
3337
3338                 return $labels_str;
3339
3340         }
3341
3342         function format_article_note($id, $note, $allow_edit = true) {
3343
3344                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
3345                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
3346                         ($allow_edit ? __('(edit note)') : "")."</div>$note</div>";
3347
3348                 return $str;
3349         }
3350
3351
3352         function get_feed_category($link, $feed_cat, $parent_cat_id = false) {
3353                 if ($parent_cat_id) {
3354                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3355                         $parent_insert = "'$parent_cat_id'";
3356                 } else {
3357                         $parent_qpart = "parent_cat IS NULL";
3358                         $parent_insert = "NULL";
3359                 }
3360
3361                 $result = db_query($link,
3362                         "SELECT id FROM ttrss_feed_categories
3363                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3364
3365                 if (db_num_rows($result) == 0) {
3366                         return false;
3367                 } else {
3368                         return db_fetch_result($result, 0, "id");
3369                 }
3370         }
3371
3372         function add_feed_category($link, $feed_cat, $parent_cat_id = false) {
3373
3374                 if (!$feed_cat) return false;
3375
3376                 db_query($link, "BEGIN");
3377
3378                 if ($parent_cat_id) {
3379                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3380                         $parent_insert = "'$parent_cat_id'";
3381                 } else {
3382                         $parent_qpart = "parent_cat IS NULL";
3383                         $parent_insert = "NULL";
3384                 }
3385
3386                 $result = db_query($link,
3387                         "SELECT id FROM ttrss_feed_categories
3388                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3389
3390                 if (db_num_rows($result) == 0) {
3391
3392                         $result = db_query($link,
3393                                 "INSERT INTO ttrss_feed_categories (owner_uid,title,parent_cat)
3394                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat', $parent_insert)");
3395
3396                         db_query($link, "COMMIT");
3397
3398                         return true;
3399                 }
3400
3401                 return false;
3402         }
3403
3404         function getArticleFeed($link, $id) {
3405                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3406                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3407
3408                 if (db_num_rows($result) != 0) {
3409                         return db_fetch_result($result, 0, "feed_id");
3410                 } else {
3411                         return 0;
3412                 }
3413         }
3414
3415         /**
3416          * Fixes incomplete URLs by prepending "http://".
3417          * Also replaces feed:// with http://, and
3418          * prepends a trailing slash if the url is a domain name only.
3419          *
3420          * @param string $url Possibly incomplete URL
3421          *
3422          * @return string Fixed URL.
3423          */
3424         function fix_url($url) {
3425                 if (strpos($url, '://') === false) {
3426                         $url = 'http://' . $url;
3427                 } else if (substr($url, 0, 5) == 'feed:') {
3428                         $url = 'http:' . substr($url, 5);
3429                 }
3430
3431                 //prepend slash if the URL has no slash in it
3432                 // "http://www.example" -> "http://www.example/"
3433                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
3434                         $url .= '/';
3435                 }
3436
3437                 if ($url != "http:///")
3438                         return $url;
3439                 else
3440                         return '';
3441         }
3442
3443         function validate_feed_url($url) {
3444                 $parts = parse_url($url);
3445
3446                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
3447
3448         }
3449
3450         function get_article_enclosures($link, $id) {
3451
3452                 $query = "SELECT * FROM ttrss_enclosures
3453                         WHERE post_id = '$id' AND content_url != ''";
3454
3455                 $rv = array();
3456
3457                 $result = db_query($link, $query);
3458
3459                 if (db_num_rows($result) > 0) {
3460                         while ($line = db_fetch_assoc($result)) {
3461                                 array_push($rv, $line);
3462                         }
3463                 }
3464
3465                 return $rv;
3466         }
3467
3468         function save_email_address($link, $email) {
3469                 // FIXME: implement persistent storage of emails
3470
3471                 if (!$_SESSION['stored_emails'])
3472                         $_SESSION['stored_emails'] = array();
3473
3474                 if (!in_array($email, $_SESSION['stored_emails']))
3475                         array_push($_SESSION['stored_emails'], $email);
3476         }
3477
3478
3479         function get_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
3480
3481                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3482
3483                 $sql_is_cat = bool_to_sql_bool($is_cat);
3484
3485                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
3486                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
3487                         AND owner_uid = " . $owner_uid);
3488
3489                 if (db_num_rows($result) == 1) {
3490                         return db_fetch_result($result, 0, "access_key");
3491                 } else {
3492                         $key = db_escape_string(sha1(uniqid(rand(), true)));
3493
3494                         $result = db_query($link, "INSERT INTO ttrss_access_keys
3495                                 (access_key, feed_id, is_cat, owner_uid)
3496                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
3497
3498                         return $key;
3499                 }
3500                 return false;
3501         }
3502
3503         function get_feeds_from_html($url, $content)
3504         {
3505                 $url     = fix_url($url);
3506                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
3507
3508                 libxml_use_internal_errors(true);
3509
3510                 $doc = new DOMDocument();
3511                 $doc->loadHTML($content);
3512                 $xpath = new DOMXPath($doc);
3513                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
3514                 $feedUrls = array();
3515                 foreach ($entries as $entry) {
3516                         if ($entry->hasAttribute('href')) {
3517                                 $title = $entry->getAttribute('title');
3518                                 if ($title == '') {
3519                                         $title = $entry->getAttribute('type');
3520                                 }
3521                                 $feedUrl = rewrite_relative_url(
3522                                         $baseUrl, $entry->getAttribute('href')
3523                                 );
3524                                 $feedUrls[$feedUrl] = $title;
3525                         }
3526                 }
3527                 return $feedUrls;
3528         }
3529
3530         function is_html($content) {
3531                 return preg_match("/<html|DOCTYPE html/i", substr($content, 0, 20)) !== 0;
3532         }
3533
3534         function url_is_html($url, $login = false, $pass = false) {
3535                 return is_html(fetch_file_contents($url, false, $login, $pass));
3536         }
3537
3538         function print_label_select($link, $name, $value, $attributes = "") {
3539
3540                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
3541                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
3542
3543                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
3544                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
3545
3546                 while ($line = db_fetch_assoc($result)) {
3547
3548                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
3549
3550                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
3551                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
3552
3553                 }
3554
3555 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
3556
3557                 print "</select>";
3558
3559
3560         }
3561
3562         function format_article_enclosures($link, $id, $always_display_enclosures,
3563                                         $article_content) {
3564
3565                 $result = get_article_enclosures($link, $id);
3566                 $rv = '';
3567
3568                 if (count($result) > 0) {
3569
3570                         $entries_html = array();
3571                         $entries = array();
3572                         $entries_inline = array();
3573
3574                         foreach ($result as $line) {
3575
3576                                 $url = $line["content_url"];
3577                                 $ctype = $line["content_type"];
3578
3579                                 if (!$ctype) $ctype = __("unknown type");
3580
3581                                 $filename = substr($url, strrpos($url, "/")+1);
3582
3583                                 $player = format_inline_player($link, $url, $ctype);
3584
3585                                 if ($player) array_push($entries_inline, $player);
3586
3587 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3588 #                                       $filename . " (" . $ctype . ")" . "</a>";
3589
3590                                 $entry = "<div onclick=\"window.open('".htmlspecialchars($url)."')\"
3591                                         dojoType=\"dijit.MenuItem\">$filename ($ctype)</div>";
3592
3593                                 array_push($entries_html, $entry);
3594
3595                                 $entry = array();
3596
3597                                 $entry["type"] = $ctype;
3598                                 $entry["filename"] = $filename;
3599                                 $entry["url"] = $url;
3600
3601                                 array_push($entries, $entry);
3602                         }
3603
3604                         if (!get_pref($link, "STRIP_IMAGES")) {
3605                                 if ($always_display_enclosures ||
3606                                                         !preg_match("/<img/i", $article_content)) {
3607
3608                                         foreach ($entries as $entry) {
3609
3610                                                 if (preg_match("/image/", $entry["type"]) ||
3611                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
3612
3613                                                                 $rv .= "<p><img
3614                                                                 alt=\"".htmlspecialchars($entry["filename"])."\"
3615                                                                 src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
3616
3617                                                 }
3618                                         }
3619                                 }
3620                         }
3621
3622                         if (count($entries_inline) > 0) {
3623                                 $rv .= "<hr clear='both'/>";
3624                                 foreach ($entries_inline as $entry) { $rv .= $entry; };
3625                                 $rv .= "<hr clear='both'/>";
3626                         }
3627
3628                         $rv .= "<br/><div dojoType=\"dijit.form.DropDownButton\">".
3629                                 "<span>" . __('Attachments')."</span>";
3630                         $rv .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3631
3632                         foreach ($entries_html as $entry) { $rv .= $entry; };
3633
3634                         $rv .= "</div></div>";
3635                 }
3636
3637                 return $rv;
3638         }
3639
3640         function getLastArticleId($link) {
3641                 $result = db_query($link, "SELECT MAX(ref_id) AS id FROM ttrss_user_entries
3642                         WHERE owner_uid = " . $_SESSION["uid"]);
3643
3644                 if (db_num_rows($result) == 1) {
3645                         return db_fetch_result($result, 0, "id");
3646                 } else {
3647                         return -1;
3648                 }
3649         }
3650
3651         function build_url($parts) {
3652                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
3653         }
3654
3655         /**
3656          * Converts a (possibly) relative URL to a absolute one.
3657          *
3658          * @param string $url     Base URL (i.e. from where the document is)
3659          * @param string $rel_url Possibly relative URL in the document
3660          *
3661          * @return string Absolute URL
3662          */
3663         function rewrite_relative_url($url, $rel_url) {
3664                 if (strpos($rel_url, "magnet:") === 0) {
3665                         return $rel_url;
3666                 } else if (strpos($rel_url, "://") !== false) {
3667                         return $rel_url;
3668                 } else if (strpos($rel_url, "//") === 0) {
3669                         # protocol-relative URL (rare but they exist)
3670                         return $rel_url;
3671                 } else if (strpos($rel_url, "/") === 0)
3672                 {
3673                         $parts = parse_url($url);
3674                         $parts['path'] = $rel_url;
3675
3676                         return build_url($parts);
3677
3678                 } else {
3679                         $parts = parse_url($url);
3680                         if (!isset($parts['path'])) {
3681                                 $parts['path'] = '/';
3682                         }
3683                         $dir = $parts['path'];
3684                         if (substr($dir, -1) !== '/') {
3685                                 $dir = dirname($parts['path']);
3686                                 $dir !== '/' && $dir .= '/';
3687                         }
3688                         $parts['path'] = $dir . $rel_url;
3689
3690                         return build_url($parts);
3691                 }
3692         }
3693
3694         function sphinx_search($query, $offset = 0, $limit = 30) {
3695                 require_once 'lib/sphinxapi.php';
3696
3697                 $sphinxClient = new SphinxClient();
3698
3699                 $sphinxClient->SetServer('localhost', 9312);
3700                 $sphinxClient->SetConnectTimeout(1);
3701
3702                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
3703                         'feed_title' => 20));
3704
3705                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
3706                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
3707                 $sphinxClient->SetLimits($offset, $limit, 1000);
3708                 $sphinxClient->SetArrayResult(false);
3709                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
3710
3711                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
3712
3713                 $ids = array();
3714
3715                 if (is_array($result['matches'])) {
3716                         foreach (array_keys($result['matches']) as $int_id) {
3717                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
3718                                 array_push($ids, $ref_id);
3719                         }
3720                 }
3721
3722                 return $ids;
3723         }
3724
3725         function cleanup_tags($link, $days = 14, $limit = 1000) {
3726
3727                 if (DB_TYPE == "pgsql") {
3728                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
3729                 } else if (DB_TYPE == "mysql") {
3730                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
3731                 }
3732
3733                 $tags_deleted = 0;
3734
3735                 while ($limit > 0) {
3736                         $limit_part = 500;
3737
3738                         $query = "SELECT ttrss_tags.id AS id
3739                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
3740                                 WHERE post_int_id = int_id AND $interval_query AND
3741                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
3742
3743                         $result = db_query($link, $query);
3744
3745                         $ids = array();
3746
3747                         while ($line = db_fetch_assoc($result)) {
3748                                 array_push($ids, $line['id']);
3749                         }
3750
3751                         if (count($ids) > 0) {
3752                                 $ids = join(",", $ids);
3753                                 print ".";
3754
3755                                 $tmp_result = db_query($link, "DELETE FROM ttrss_tags WHERE id IN ($ids)");
3756                                 $tags_deleted += db_affected_rows($link, $tmp_result);
3757                         } else {
3758                                 break;
3759                         }
3760
3761                         $limit -= $limit_part;
3762                 }
3763
3764                 print "\n";
3765
3766                 return $tags_deleted;
3767         }
3768
3769         function print_user_stylesheet($link) {
3770                 $value = get_pref($link, 'USER_STYLESHEET');
3771
3772                 if ($value) {
3773                         print "<style type=\"text/css\">";
3774                         print str_replace("<br/>", "\n", $value);
3775                         print "</style>";
3776                 }
3777
3778         }
3779
3780         function rewrite_urls($html) {
3781                 libxml_use_internal_errors(true);
3782
3783                 $charset_hack = '<head>
3784                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
3785                 </head>';
3786
3787                 $doc = new DOMDocument();
3788                 $doc->loadHTML($charset_hack . $html);
3789                 $xpath = new DOMXPath($doc);
3790
3791                 $entries = $xpath->query('//*/text()');
3792
3793                 foreach ($entries as $entry) {
3794                         if (strstr($entry->wholeText, "://") !== false) {
3795                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
3796                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
3797
3798                                 if ($text != $entry->wholeText) {
3799                                         $cdoc = new DOMDocument();
3800                                         $cdoc->loadHTML($charset_hack . $text);
3801
3802
3803                                         foreach ($cdoc->childNodes as $cnode) {
3804                                                 $cnode = $doc->importNode($cnode, true);
3805
3806                                                 if ($cnode) {
3807                                                         $entry->parentNode->insertBefore($cnode);
3808                                                 }
3809                                         }
3810
3811                                         $entry->parentNode->removeChild($entry);
3812
3813                                 }
3814                         }
3815                 }
3816
3817                 $node = $doc->getElementsByTagName('body')->item(0);
3818
3819                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
3820                 if ($node)
3821                         return $doc->saveXML($node);
3822                 else
3823                         return $html;
3824         }
3825
3826         function filter_to_sql($link, $filter, $owner_uid) {
3827                 $query = array();
3828
3829                 if (DB_TYPE == "pgsql")
3830                         $reg_qpart = "~";
3831                 else
3832                         $reg_qpart = "REGEXP";
3833
3834                 foreach ($filter["rules"] AS $rule) {
3835                         $regexp_valid = preg_match('/' . $rule['reg_exp'] . '/',
3836                                 $rule['reg_exp']) !== FALSE;
3837
3838                         if ($regexp_valid) {
3839
3840                                 $rule['reg_exp'] = db_escape_string($rule['reg_exp']);
3841
3842                                 switch ($rule["type"]) {
3843                                         case "title":
3844                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3845                                                         $rule['reg_exp'] . "')";
3846                                                 break;
3847                                         case "content":
3848                                                 $qpart = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
3849                                                         $rule['reg_exp'] . "')";
3850                                                 break;
3851                                         case "both":
3852                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3853                                                         $rule['reg_exp'] . "') OR LOWER(" .
3854                                                         "ttrss_entries.content) $reg_qpart LOWER('" . $rule['reg_exp'] . "')";
3855                                                 break;
3856                                         case "tag":
3857                                                 $qpart = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
3858                                                         $rule['reg_exp'] . "')";
3859                                                 break;
3860                                         case "link":
3861                                                 $qpart = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
3862                                                         $rule['reg_exp'] . "')";
3863                                                 break;
3864                                         case "author":
3865                                                 $qpart = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
3866                                                         $rule['reg_exp'] . "')";
3867                                                 break;
3868                                 }
3869
3870                                 if (isset($rule["feed_id"]) && $rule["feed_id"] > 0) {
3871                                         $qpart .= " AND feed_id = " . db_escape_string($rule["feed_id"]);
3872                                 }
3873
3874                                 if (isset($rule["cat_id"])) {
3875
3876                                         if ($rule["cat_id"] > 0) {
3877                                                 $children = getChildCategories($link, $rule["cat_id"], $owner_uid);
3878                                                 array_push($children, $rule["cat_id"]);
3879
3880                                                 $children = join(",", $children);
3881
3882                                                 $cat_qpart = "cat_id IN ($children)";
3883                                         } else {
3884                                                 $cat_qpart = "cat_id IS NULL";
3885                                         }
3886
3887                                         $qpart .= " AND $cat_qpart";
3888                                 }
3889
3890                                 array_push($query, "($qpart)");
3891
3892                         }
3893                 }
3894
3895                 if (count($query) > 0) {
3896                         return "(" . join($filter["match_any_rule"] ? "OR" : "AND", $query) . ")";
3897                 } else {
3898                         return "(false)";
3899                 }
3900         }
3901
3902         if (!function_exists('gzdecode')) {
3903                 function gzdecode($string) { // no support for 2nd argument
3904                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
3905                                 base64_encode($string));
3906                 }
3907         }
3908
3909         function get_random_bytes($length) {
3910                 if (function_exists('openssl_random_pseudo_bytes')) {
3911                         return openssl_random_pseudo_bytes($length);
3912                 } else {
3913                         $output = "";
3914
3915                         for ($i = 0; $i < $length; $i++)
3916                                 $output .= chr(mt_rand(0, 255));
3917
3918                         return $output;
3919                 }
3920         }
3921
3922         function read_stdin() {
3923                 $fp = fopen("php://stdin", "r");
3924
3925                 if ($fp) {
3926                         $line = trim(fgets($fp));
3927                         fclose($fp);
3928                         return $line;
3929                 }
3930
3931                 return null;
3932         }
3933
3934         function tmpdirname($path, $prefix) {
3935                 // Use PHP's tmpfile function to create a temporary
3936                 // directory name. Delete the file and keep the name.
3937                 $tempname = tempnam($path,$prefix);
3938                 if (!$tempname)
3939                         return false;
3940
3941                 if (!unlink($tempname))
3942                         return false;
3943
3944        return $tempname;
3945         }
3946
3947         function getFeedCategory($link, $feed) {
3948                 $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
3949                         WHERE id = '$feed'");
3950
3951                 if (db_num_rows($result) > 0) {
3952                         return db_fetch_result($result, 0, "cat_id");
3953                 } else {
3954                         return false;
3955                 }
3956
3957         }
3958
3959         function implements_interface($class, $interface) {
3960                 return in_array($interface, class_implements($class));
3961         }
3962
3963         function geturl($url){
3964
3965                 (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');
3966
3967                 $curl = curl_init();
3968                 $header[0] = "Accept: text/xml,application/xml,application/xhtml+xml,";
3969                 $header[0] .= "text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5";
3970                 $header[] = "Cache-Control: max-age=0";
3971                 $header[] = "Connection: keep-alive";
3972                 $header[] = "Keep-Alive: 300";
3973                 $header[] = "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7";
3974                 $header[] = "Accept-Language: en-us,en;q=0.5";
3975                 $header[] = "Pragma: ";
3976
3977                 curl_setopt($curl, CURLOPT_URL, $url);
3978                 curl_setopt($curl, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20100101 Firefox/5.0 Firefox/5.0');
3979                 curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
3980                 curl_setopt($curl, CURLOPT_HEADER, true);
3981                 curl_setopt($curl, CURLOPT_REFERER, $url);
3982                 curl_setopt($curl, CURLOPT_ENCODING, 'gzip,deflate');
3983                 curl_setopt($curl, CURLOPT_AUTOREFERER, true);
3984                 curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
3985                 //curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); //CURLOPT_FOLLOWLOCATION Disabled...
3986                 curl_setopt($curl, CURLOPT_TIMEOUT, 60);
3987
3988                 $html = curl_exec($curl);
3989
3990                 $status = curl_getinfo($curl);
3991                 curl_close($curl);
3992
3993                 if($status['http_code']!=200){
3994                         if($status['http_code'] == 301 || $status['http_code'] == 302) {
3995                                 list($header) = explode("\r\n\r\n", $html, 2);
3996                                 $matches = array();
3997                                 preg_match("/(Location:|URI:)[^(\n)]*/", $header, $matches);
3998                                 $url = trim(str_replace($matches[1],"",$matches[0]));
3999                                 $url_parsed = parse_url($url);
4000                                 return (isset($url_parsed))? geturl($url, $referer):'';
4001                         }
4002                         $oline='';
4003                         foreach($status as $key=>$eline){$oline.='['.$key.']'.$eline.' ';}
4004                         $line =$oline." \r\n ".$url."\r\n-----------------\r\n";
4005                         $handle = @fopen('./curl.error.log', 'a');
4006                         fwrite($handle, $line);
4007                         return FALSE;
4008                 }
4009                 return $url;
4010         }
4011
4012         function get_minified_js($files) {
4013                 require_once 'lib/jshrink/Minifier.php';
4014
4015                 $rv = '';
4016
4017                 foreach ($files as $js) {
4018                         if (!isset($_GET['debug'])) {
4019                                 $cached_file = CACHE_DIR . "/js/$js.js";
4020
4021                                 if (file_exists($cached_file) &&
4022                                                 is_readable($cached_file) &&
4023                                                 filemtime($cached_file) >= filemtime("js/$js.js")) {
4024
4025                                         $rv .= file_get_contents($cached_file);
4026
4027                                 } else {
4028                                         $minified = JShrink\Minifier::minify(file_get_contents("js/$js.js"));
4029                                         file_put_contents($cached_file, $minified);
4030                                         $rv .= $minified;
4031                                 }
4032                         } else {
4033                                 $rv .= file_get_contents("js/$js.js");
4034                         }
4035                 }
4036
4037                 return $rv;
4038         }
4039
4040 ?>