include/functions.php

   1 <?php
   2         define('EXPECTED_CONFIG_VERSION', 26);
   3         define('SCHEMA_VERSION', 106);
   4
   5         $fetch_last_error = false;
   6         $pluginhost = false;
   7
   8         function __autoload($class) {
   9                 $class_file = str_replace("_", "/", strtolower(basename($class)));
  10
  11                 $file = dirname(__FILE__)."/../classes/$class_file.php";
  12
  13                 if (file_exists($file)) {
  14                         require $file;
  15                 }
  16
  17         }
  18
  19         mb_internal_encoding("UTF-8");
  20         date_default_timezone_set('UTC');
  21         if (defined('E_DEPRECATED')) {
  22                 error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
  23         } else {
  24                 error_reporting(E_ALL & ~E_NOTICE);
  25         }
  26
  27         require_once 'config.php';
  28
  29         if (DB_TYPE == "pgsql") {
  30                 define('SUBSTRING_FOR_DATE', 'SUBSTRING_FOR_DATE');
  31         } else {
  32                 define('SUBSTRING_FOR_DATE', 'SUBSTRING');
  33         }
  34
  35         define('THEME_VERSION_REQUIRED', 1.1);
  36
  37         /**
  38          * Return available translations names.
  39          *
  40          * @access public
  41          * @return array A array of available translations.
  42          */
  43         function get_translations() {
  44                 $tr = array(
  45                                         "auto"  => "Detect automatically",
  46                                         "ca_CA" => "Català",
  47                                         "cs_CZ" => "Česky",
  48                                         "en_US" => "English",
  49                                         "es_ES" => "Español",
  50                                         "de_DE" => "Deutsch",
  51                                         "fr_FR" => "Français",
  52                                         "hu_HU" => "Magyar (Hungarian)",
  53                                         "it_IT" => "Italiano",
  54                                         "ja_JP" => "日本語 (Japanese)",
  55                                         "lv_LV" => "Latviešu",
  56                                         "nb_NO" => "Norwegian bokmål",
  57                                         "pl_PL" => "Polski",
  58                                         "ru_RU" => "Русский",
  59                                         "pt_BR" => "Portuguese/Brazil",
  60                                         "zh_CN" => "Simplified Chinese");
  61
  62                 return $tr;
  63         }
  64
  65         require_once "lib/accept-to-gettext.php";
  66         require_once "lib/gettext/gettext.inc";
  67
  68
  69         function startup_gettext() {
  70
  71                 # Get locale from Accept-Language header
  72                 $lang = al2gt(array_keys(get_translations()), "text/html");
  73
  74                 if (defined('_TRANSLATION_OVERRIDE_DEFAULT')) {
  75                         $lang = _TRANSLATION_OVERRIDE_DEFAULT;
  76                 }
  77
  78                 /* In login action of mobile version */
  79                 if ($_POST["language"] && defined('MOBILE_VERSION')) {
  80                         $lang = $_POST["language"];
  81                 } else if ($_SESSION["language"] && $_SESSION["language"] != "auto") {
  82                         $lang = $_SESSION["language"];
  83                 }
  84
  85                 if ($lang) {
  86                         if (defined('LC_MESSAGES')) {
  87                                 _setlocale(LC_MESSAGES, $lang);
  88                         } else if (defined('LC_ALL')) {
  89                                 _setlocale(LC_ALL, $lang);
  90                         }
  91
  92                         if (defined('MOBILE_VERSION')) {
  93                                 _bindtextdomain("messages", "../locale");
  94                         } else {
  95                                 _bindtextdomain("messages", "locale");
  96                         }
  97
  98                         _textdomain("messages");
  99                         _bind_textdomain_codeset("messages", "UTF-8");
 100                 }
 101         }
 102
 103         startup_gettext();
 104
 105         require_once 'db-prefs.php';
 106         require_once 'version.php';
 107         require_once 'ccache.php';
 108         require_once 'labels.php';
 109
 110         define('SELF_USER_AGENT', 'Tiny Tiny RSS/' . VERSION . ' (http://tt-rss.org/)');
 111         ini_set('user_agent', SELF_USER_AGENT);
 112
 113         require_once 'lib/pubsubhubbub/publisher.php';
 114
 115         $tz_offset = -1;
 116         $utc_tz = new DateTimeZone('UTC');
 117         $schema_version = false;
 118
 119         /**
 120          * Print a timestamped debug message.
 121          *
 122          * @param string $msg The debug message.
 123          * @return void
 124          */
 125         function _debug($msg) {
 126                 $ts = strftime("%H:%M:%S", time());
 127                 if (function_exists('posix_getpid')) {
 128                         $ts = "$ts/" . posix_getpid();
 129                 }
 130
 131                 if (!(defined('QUIET') && QUIET)) {
 132                         print "[$ts] $msg\n";
 133                 }
 134
 135                 if (defined('LOGFILE'))  {
 136                         $fp = fopen(LOGFILE, 'a+');
 137
 138                         if ($fp) {
 139                                 fputs($fp, "[$ts] $msg\n");
 140                                 fclose($fp);
 141                         }
 142                 }
 143
 144         } // function _debug
 145
 146         /**
 147          * Purge a feed old posts.
 148          *
 149          * @param mixed $link A database connection.
 150          * @param mixed $feed_id The id of the purged feed.
 151          * @param mixed $purge_interval Olderness of purged posts.
 152          * @param boolean $debug Set to True to enable the debug. False by default.
 153          * @access public
 154          * @return void
 155          */
 156         function purge_feed($link, $feed_id, $purge_interval, $debug = false) {
 157
 158                 if (!$purge_interval) $purge_interval = feed_purge_interval($link, $feed_id);
 159
 160                 $rows = -1;
 161
 162                 $result = db_query($link,
 163                         "SELECT owner_uid FROM ttrss_feeds WHERE id = '$feed_id'");
 164
 165                 $owner_uid = false;
 166
 167                 if (db_num_rows($result) == 1) {
 168                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 169                 }
 170
 171                 if ($purge_interval == -1 || !$purge_interval) {
 172                         if ($owner_uid) {
 173                                 ccache_update($link, $feed_id, $owner_uid);
 174                         }
 175                         return;
 176                 }
 177
 178                 if (!$owner_uid) return;
 179
 180                 if (FORCE_ARTICLE_PURGE == 0) {
 181                         $purge_unread = get_pref($link, "PURGE_UNREAD_ARTICLES",
 182                                 $owner_uid, false);
 183                 } else {
 184                         $purge_unread = true;
 185                         $purge_interval = FORCE_ARTICLE_PURGE;
 186                 }
 187
 188                 if (!$purge_unread) $query_limit = " unread = false AND ";
 189
 190                 if (DB_TYPE == "pgsql") {
 191                         $pg_version = get_pgsql_version($link);
 192
 193                         if (preg_match("/^7\./", $pg_version) || preg_match("/^8\.0/", $pg_version)) {
 194
 195                                 $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 196                                         ttrss_entries.id = ref_id AND
 197                                         marked = false AND
 198                                         feed_id = '$feed_id' AND
 199                                         $query_limit
 200                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 201
 202                         } else {
 203
 204                                 $result = db_query($link, "DELETE FROM ttrss_user_entries
 205                                         USING ttrss_entries
 206                                         WHERE ttrss_entries.id = ref_id AND
 207                                         marked = false AND
 208                                         feed_id = '$feed_id' AND
 209                                         $query_limit
 210                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 211                         }
 212
 213                         $rows = pg_affected_rows($result);
 214
 215                 } else {
 216
 217 /*                      $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 218                                 marked = false AND feed_id = '$feed_id' AND
 219                                 (SELECT date_updated FROM ttrss_entries WHERE
 220                                         id = ref_id) < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)"); */
 221
 222                         $result = db_query($link, "DELETE FROM ttrss_user_entries
 223                                 USING ttrss_user_entries, ttrss_entries
 224                                 WHERE ttrss_entries.id = ref_id AND
 225                                 marked = false AND
 226                                 feed_id = '$feed_id' AND
 227                                 $query_limit
 228                                 ttrss_entries.date_updated < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)");
 229
 230                         $rows = mysql_affected_rows($link);
 231
 232                 }
 233
 234                 ccache_update($link, $feed_id, $owner_uid);
 235
 236                 if ($debug) {
 237                         _debug("Purged feed $feed_id ($purge_interval): deleted $rows articles");
 238                 }
 239
 240                 return $rows;
 241         } // function purge_feed
 242
 243         function feed_purge_interval($link, $feed_id) {
 244
 245                 $result = db_query($link, "SELECT purge_interval, owner_uid FROM ttrss_feeds
 246                         WHERE id = '$feed_id'");
 247
 248                 if (db_num_rows($result) == 1) {
 249                         $purge_interval = db_fetch_result($result, 0, "purge_interval");
 250                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 251
 252                         if ($purge_interval == 0) $purge_interval = get_pref($link,
 253                                 'PURGE_OLD_DAYS', $owner_uid);
 254
 255                         return $purge_interval;
 256
 257                 } else {
 258                         return -1;
 259                 }
 260         }
 261
 262         function purge_orphans($link, $do_output = false) {
 263
 264                 // purge orphaned posts in main content table
 265                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
 266                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
 267
 268                 if ($do_output) {
 269                         $rows = db_affected_rows($link, $result);
 270                         _debug("Purged $rows orphaned posts.");
 271                 }
 272         }
 273
 274         function get_feed_update_interval($link, $feed_id) {
 275                 $result = db_query($link, "SELECT owner_uid, update_interval FROM
 276                         ttrss_feeds WHERE id = '$feed_id'");
 277
 278                 if (db_num_rows($result) == 1) {
 279                         $update_interval = db_fetch_result($result, 0, "update_interval");
 280                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 281
 282                         if ($update_interval != 0) {
 283                                 return $update_interval;
 284                         } else {
 285                                 return get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $owner_uid, false);
 286                         }
 287
 288                 } else {
 289                         return -1;
 290                 }
 291         }
 292
 293         function fetch_file_contents($url, $type = false, $login = false, $pass = false, $post_query = false, $timeout = false) {
 294                 $login = urlencode($login);
 295                 $pass = urlencode($pass);
 296
 297                 global $fetch_last_error;
 298
 299                 if (function_exists('curl_init') && !ini_get("open_basedir")) {
 300
 301                         if (ini_get("safe_mode")) {
 302                                 $ch = curl_init(geturl($url));
 303                         } else {
 304                                 $ch = curl_init($url);
 305                         }
 306
 307                         curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout ? $timeout : 15);
 308                         curl_setopt($ch, CURLOPT_TIMEOUT, $timeout ? $timeout : 45);
 309                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, !ini_get("safe_mode"));
 310                         curl_setopt($ch, CURLOPT_MAXREDIRS, 20);
 311                         curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
 312                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 313                         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 314                         curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 315                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 316                         curl_setopt($ch, CURLOPT_ENCODING , "gzip");
 317                         curl_setopt($ch, CURLOPT_REFERER, $url);
 318
 319                         if ($post_query) {
 320                                 curl_setopt($ch, CURLOPT_POST, true);
 321                                 curl_setopt($ch, CURLOPT_POSTFIELDS, $post_query);
 322                         }
 323
 324                         if ($login && $pass)
 325                                 curl_setopt($ch, CURLOPT_USERPWD, "$login:$pass");
 326
 327                         $contents = @curl_exec($ch);
 328
 329                         if (curl_errno($ch) === 23 || curl_errno($ch) === 61) {
 330                                 curl_setopt($ch, CURLOPT_ENCODING, 'none');
 331                                 $contents = @curl_exec($ch);
 332                         }
 333
 334                         if ($contents === false) {
 335                                 $fetch_last_error = curl_errno($ch) . " " . curl_error($ch);
 336                                 curl_close($ch);
 337                                 return false;
 338                         }
 339
 340                         $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 341                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 342
 343                         if ($http_code != 200 || $type && strpos($content_type, "$type") === false) {
 344                                 if (curl_errno($ch) != 0) {
 345                                         $fetch_last_error = curl_errno($ch) . " " . curl_error($ch);
 346                                 } else {
 347                                         $fetch_last_error = "HTTP Code: $http_code";
 348                                 }
 349                                 curl_close($ch);
 350                                 return false;
 351                         }
 352
 353                         curl_close($ch);
 354
 355                         return $contents;
 356                 } else {
 357                         if ($login && $pass ){
 358                                 $url_parts = array();
 359
 360                                 preg_match("/(^[^:]*):\/\/(.*)/", $url, $url_parts);
 361
 362                                 if ($url_parts[1] && $url_parts[2]) {
 363                                         $url = $url_parts[1] . "://$login:$pass@" . $url_parts[2];
 364                                 }
 365                         }
 366
 367                         $data = @file_get_contents($url);
 368
 369                         $gzdecoded = gzdecode($data);
 370                         if ($gzdecoded) $data = $gzdecoded;
 371
 372                         if (!$data && function_exists('error_get_last')) {
 373                                 $error = error_get_last();
 374                                 $fetch_last_error = $error["message"];
 375                         }
 376                         return $data;
 377                 }
 378
 379         }
 380
 381         /**
 382          * Try to determine the favicon URL for a feed.
 383          * adapted from wordpress favicon plugin by Jeff Minard (http://thecodepro.com/)
 384          * http://dev.wp-plugins.org/file/favatars/trunk/favatars.php
 385          *
 386          * @param string $url A feed or page URL
 387          * @access public
 388          * @return mixed The favicon URL, or false if none was found.
 389          */
 390         function get_favicon_url($url) {
 391
 392                 $favicon_url = false;
 393
 394                 if ($html = @fetch_file_contents($url)) {
 395
 396                         libxml_use_internal_errors(true);
 397
 398                         $doc = new DOMDocument();
 399                         $doc->loadHTML($html);
 400                         $xpath = new DOMXPath($doc);
 401
 402                         $base = $xpath->query('/html/head/base');
 403                         foreach ($base as $b) {
 404                                 $url = $b->getAttribute("href");
 405                                 break;
 406                         }
 407
 408                         $entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon"]');
 409                         if (count($entries) > 0) {
 410                                 foreach ($entries as $entry) {
 411                                         $favicon_url = rewrite_relative_url($url, $entry->getAttribute("href"));
 412                                         break;
 413                                 }
 414                         }
 415                 }
 416
 417                 if (!$favicon_url)
 418                         $favicon_url = rewrite_relative_url($url, "/favicon.ico");
 419
 420                 return $favicon_url;
 421         } // function get_favicon_url
 422
 423         function check_feed_favicon($site_url, $feed, $link) {
 424 #               print "FAVICON [$site_url]: $favicon_url\n";
 425
 426                 $icon_file = ICONS_DIR . "/$feed.ico";
 427
 428                 if (!file_exists($icon_file)) {
 429                         $favicon_url = get_favicon_url($site_url);
 430
 431                         if ($favicon_url) {
 432                                 // Limiting to "image" type misses those served with text/plain
 433                                 $contents = fetch_file_contents($favicon_url); // , "image");
 434
 435                                 if ($contents) {
 436                                         // Crude image type matching.
 437                                         // Patterns gleaned from the file(1) source code.
 438                                         if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
 439                                                 // 0       string  \000\000\001\000        MS Windows icon resource
 440                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
 441                                         }
 442                                         elseif (preg_match('/^GIF8/', $contents)) {
 443                                                 // 0       string          GIF8            GIF image data
 444                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
 445                                         }
 446                                         elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
 447                                                 // 0       string          \x89PNG\x0d\x0a\x1a\x0a         PNG image data
 448                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
 449                                         }
 450                                         elseif (preg_match('/^\xff\xd8/', $contents)) {
 451                                                 // 0       beshort         0xffd8          JPEG image data
 452                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
 453                                         }
 454                                         else {
 455                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
 456                                                 $contents = "";
 457                                         }
 458                                 }
 459
 460                                 if ($contents) {
 461                                         $fp = @fopen($icon_file, "w");
 462
 463                                         if ($fp) {
 464                                                 fwrite($fp, $contents);
 465                                                 fclose($fp);
 466                                                 chmod($icon_file, 0644);
 467                                         }
 468                                 }
 469                         }
 470                 }
 471         }
 472
 473         function print_select($id, $default, $values, $attributes = "") {
 474                 print "<select name=\"$id\" id=\"$id\" $attributes>";
 475                 foreach ($values as $v) {
 476                         if ($v == $default)
 477                                 $sel = "selected=\"1\"";
 478                          else
 479                                 $sel = "";
 480
 481                         $v = trim($v);
 482
 483                         print "<option value=\"$v\" $sel>$v</option>";
 484                 }
 485                 print "</select>";
 486         }
 487
 488         function print_select_hash($id, $default, $values, $attributes = "") {
 489                 print "<select name=\"$id\" id='$id' $attributes>";
 490                 foreach (array_keys($values) as $v) {
 491                         if ($v == $default)
 492                                 $sel = 'selected="selected"';
 493                          else
 494                                 $sel = "";
 495
 496                         $v = trim($v);
 497
 498                         print "<option $sel value=\"$v\">".$values[$v]."</option>";
 499                 }
 500
 501                 print "</select>";
 502         }
 503
 504         function print_radio($id, $default, $true_is, $values, $attributes = "") {
 505                 foreach ($values as $v) {
 506
 507                         if ($v == $default)
 508                                 $sel = "checked";
 509                          else
 510                                 $sel = "";
 511
 512                         if ($v == $true_is) {
 513                                 $sel .= " value=\"1\"";
 514                         } else {
 515                                 $sel .= " value=\"0\"";
 516                         }
 517
 518                         print "<input class=\"noborder\" dojoType=\"dijit.form.RadioButton\"
 519                                 type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 520
 521                 }
 522         }
 523
 524         function initialize_user_prefs($link, $uid, $profile = false) {
 525
 526                 $uid = db_escape_string($uid);
 527
 528                 if (!$profile) {
 529                         $profile = "NULL";
 530                         $profile_qpart = "AND profile IS NULL";
 531                 } else {
 532                         $profile_qpart = "AND profile = '$profile'";
 533                 }
 534
 535                 if (get_schema_version($link) < 63) $profile_qpart = "";
 536
 537                 db_query($link, "BEGIN");
 538
 539                 $result = db_query($link, "SELECT pref_name,def_value FROM ttrss_prefs");
 540
 541                 $u_result = db_query($link, "SELECT pref_name
 542                         FROM ttrss_user_prefs WHERE owner_uid = '$uid' $profile_qpart");
 543
 544                 $active_prefs = array();
 545
 546                 while ($line = db_fetch_assoc($u_result)) {
 547                         array_push($active_prefs, $line["pref_name"]);
 548                 }
 549
 550                 while ($line = db_fetch_assoc($result)) {
 551                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 552 //                              print "adding " . $line["pref_name"] . "<br>";
 553
 554                                 if (get_schema_version($link) < 63) {
 555                                         db_query($link, "INSERT INTO ttrss_user_prefs
 556                                                 (owner_uid,pref_name,value) VALUES
 557                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 558
 559                                 } else {
 560                                         db_query($link, "INSERT INTO ttrss_user_prefs
 561                                                 (owner_uid,pref_name,value, profile) VALUES
 562                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."', $profile)");
 563                                 }
 564
 565                         }
 566                 }
 567
 568                 db_query($link, "COMMIT");
 569
 570         }
 571
 572         function get_ssl_certificate_id() {
 573                 if ($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"]) {
 574                         return sha1($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"] .
 575                                 $_SERVER["REDIRECT_SSL_CLIENT_V_START"] .
 576                                 $_SERVER["REDIRECT_SSL_CLIENT_V_END"] .
 577                                 $_SERVER["REDIRECT_SSL_CLIENT_S_DN"]);
 578                 }
 579                 return "";
 580         }
 581
 582         function authenticate_user($link, $login, $password, $check_only = false) {
 583
 584                 if (!SINGLE_USER_MODE) {
 585
 586                         $user_id = false;
 587
 588                         global $pluginhost;
 589                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_AUTH_USER) as $plugin) {
 590
 591                                 $user_id = (int) $plugin->authenticate($login, $password);
 592
 593                                 if ($user_id) {
 594                                         $_SESSION["auth_module"] = strtolower(get_class($plugin));
 595                                         break;
 596                                 }
 597                         }
 598
 599                         if ($user_id && !$check_only) {
 600                                 $_SESSION["uid"] = $user_id;
 601
 602                                 $result = db_query($link, "SELECT login,access_level,pwd_hash FROM ttrss_users
 603                                         WHERE id = '$user_id'");
 604
 605                                 $_SESSION["name"] = db_fetch_result($result, 0, "login");
 606                                 $_SESSION["access_level"] = db_fetch_result($result, 0, "access_level");
 607                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 608
 609                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 610                                         $_SESSION["uid"]);
 611
 612                                 $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 613                                 $_SESSION["pwd_hash"] = db_fetch_result($result, 0, "pwd_hash");
 614
 615                                 $_SESSION["last_version_check"] = time();
 616
 617                                 initialize_user_prefs($link, $_SESSION["uid"]);
 618
 619                                 return true;
 620                         }
 621
 622                         return false;
 623
 624                 } else {
 625
 626                         $_SESSION["uid"] = 1;
 627                         $_SESSION["name"] = "admin";
 628                         $_SESSION["access_level"] = 10;
 629
 630                         $_SESSION["hide_hello"] = true;
 631                         $_SESSION["hide_logout"] = true;
 632
 633                         $_SESSION["auth_module"] = false;
 634
 635                         if (!$_SESSION["csrf_token"]) {
 636                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 637                         }
 638
 639                         $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 640
 641                         initialize_user_prefs($link, $_SESSION["uid"]);
 642
 643                         return true;
 644                 }
 645         }
 646
 647         function make_password($length = 8) {
 648
 649                 $password = "";
 650                 $possible = "0123456789abcdfghjkmnpqrstvwxyzABCDFGHJKMNPQRSTVWXYZ";
 651
 652         $i = 0;
 653
 654                 while ($i < $length) {
 655                         $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 656
 657                         if (!strstr($password, $char)) {
 658                                 $password .= $char;
 659                                 $i++;
 660                         }
 661                 }
 662                 return $password;
 663         }
 664
 665         // this is called after user is created to initialize default feeds, labels
 666         // or whatever else
 667
 668         // user preferences are checked on every login, not here
 669
 670         function initialize_user($link, $uid) {
 671
 672                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 673                         values ('$uid', 'Tiny Tiny RSS: New Releases',
 674                         'http://tt-rss.org/releases.rss')");
 675
 676                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 677                         values ('$uid', 'Tiny Tiny RSS: Forum',
 678                                 'http://tt-rss.org/forum/rss.php')");
 679         }
 680
 681         function logout_user() {
 682                 session_destroy();
 683                 if (isset($_COOKIE[session_name()])) {
 684                    setcookie(session_name(), '', time()-42000, '/');
 685                 }
 686         }
 687
 688         function validate_csrf($csrf_token) {
 689                 return $csrf_token == $_SESSION['csrf_token'];
 690         }
 691
 692         function validate_session($link) {
 693                 if (SINGLE_USER_MODE) return true;
 694
 695                 $check_ip = $_SESSION['ip_address'];
 696
 697                 switch (SESSION_CHECK_ADDRESS) {
 698                 case 0:
 699                         $check_ip = '';
 700                         break;
 701                 case 1:
 702                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 703                         break;
 704                 case 2:
 705                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.'));
 706                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 707                         break;
 708                 };
 709
 710                 if ($check_ip && strpos($_SERVER['REMOTE_ADDR'], $check_ip) !== 0) {
 711                         $_SESSION["login_error_msg"] =
 712                                 __("Session failed to validate (incorrect IP)");
 713                         return false;
 714                 }
 715
 716                 if ($_SESSION["ref_schema_version"] != get_schema_version($link, true))
 717                         return false;
 718
 719                 if ($_SESSION["uid"]) {
 720
 721                         $result = db_query($link,
 722                                 "SELECT pwd_hash FROM ttrss_users WHERE id = '".$_SESSION["uid"]."'");
 723
 724                         $pwd_hash = db_fetch_result($result, 0, "pwd_hash");
 725
 726                         if ($pwd_hash != $_SESSION["pwd_hash"]) {
 727                                 return false;
 728                         }
 729                 }
 730
 731 /*              if ($_SESSION["cookie_lifetime"] && $_SESSION["uid"]) {
 732
 733                         //print_r($_SESSION);
 734
 735                         if (time() > $_SESSION["cookie_lifetime"]) {
 736                                 return false;
 737                         }
 738                 } */
 739
 740                 return true;
 741         }
 742
 743         function load_user_plugins($link, $owner_uid) {
 744                 if ($owner_uid) {
 745                         $plugins = get_pref($link, "_ENABLED_PLUGINS", $owner_uid);
 746
 747                         global $pluginhost;
 748                         $pluginhost->load($plugins, $pluginhost::KIND_USER, $owner_uid);
 749
 750                         if (get_schema_version($link) > 100) {
 751                                 $pluginhost->load_data();
 752                         }
 753                 }
 754         }
 755
 756         function login_sequence($link, $login_form = 0) {
 757                 $_SESSION["prefs_cache"] = false;
 758
 759                 if (SINGLE_USER_MODE) {
 760                         authenticate_user($link, "admin", null);
 761                         cache_prefs($link);
 762                         load_user_plugins($link, $_SESSION["uid"]);
 763                 } else {
 764                         if (!$_SESSION["uid"] || !validate_session($link)) {
 765
 766                                 if (AUTH_AUTO_LOGIN && authenticate_user($link, null, null)) {
 767                                     $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 768                                 } else {
 769                                          authenticate_user($link, null, null, true);
 770                                 }
 771
 772                                 if (!$_SESSION["uid"]) render_login_form($link, $login_form);
 773
 774                         } else {
 775                                 /* bump login timestamp */
 776                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 777                                         $_SESSION["uid"]);
 778                         }
 779
 780                         if ($_SESSION["uid"] && $_SESSION["language"] && SESSION_COOKIE_LIFETIME > 0) {
 781                                 setcookie("ttrss_lang", $_SESSION["language"],
 782                                         time() + SESSION_COOKIE_LIFETIME);
 783                         }
 784
 785                         if ($_SESSION["uid"]) {
 786                                 cache_prefs($link);
 787                                 load_user_plugins($link, $_SESSION["uid"]);
 788                         }
 789                 }
 790         }
 791
 792         function truncate_string($str, $max_len, $suffix = '&hellip;') {
 793                 if (mb_strlen($str, "utf-8") > $max_len - 3) {
 794                         return mb_substr($str, 0, $max_len, "utf-8") . $suffix;
 795                 } else {
 796                         return $str;
 797                 }
 798         }
 799
 800         function convert_timestamp($timestamp, $source_tz, $dest_tz) {
 801
 802                 try {
 803                         $source_tz = new DateTimeZone($source_tz);
 804                 } catch (Exception $e) {
 805                         $source_tz = new DateTimeZone('UTC');
 806                 }
 807
 808                 try {
 809                         $dest_tz = new DateTimeZone($dest_tz);
 810                 } catch (Exception $e) {
 811                         $dest_tz = new DateTimeZone('UTC');
 812                 }
 813
 814                 $dt = new DateTime(date('Y-m-d H:i:s', $timestamp), $source_tz);
 815                 return $dt->format('U') + $dest_tz->getOffset($dt);
 816         }
 817
 818         function make_local_datetime($link, $timestamp, $long, $owner_uid = false,
 819                                         $no_smart_dt = false) {
 820
 821                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 822                 if (!$timestamp) $timestamp = '1970-01-01 0:00';
 823
 824                 global $utc_tz;
 825                 global $tz_offset;
 826
 827                 # We store date in UTC internally
 828                 $dt = new DateTime($timestamp, $utc_tz);
 829
 830                 if ($tz_offset == -1) {
 831
 832                         $user_tz_string = get_pref($link, 'USER_TIMEZONE', $owner_uid);
 833
 834                         try {
 835                                 $user_tz = new DateTimeZone($user_tz_string);
 836                         } catch (Exception $e) {
 837                                 $user_tz = $utc_tz;
 838                         }
 839
 840                         $tz_offset = $user_tz->getOffset($dt);
 841                 }
 842
 843                 $user_timestamp = $dt->format('U') + $tz_offset;
 844
 845                 if (!$no_smart_dt) {
 846                         return smart_date_time($link, $user_timestamp,
 847                                 $tz_offset, $owner_uid);
 848                 } else {
 849                         if ($long)
 850                                 $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 851                         else
 852                                 $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 853
 854                         return date($format, $user_timestamp);
 855                 }
 856         }
 857
 858         function smart_date_time($link, $timestamp, $tz_offset = 0, $owner_uid = false) {
 859                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 860
 861                 if (date("Y.m.d", $timestamp) == date("Y.m.d", time() + $tz_offset)) {
 862                         return date("G:i", $timestamp);
 863                 } else if (date("Y", $timestamp) == date("Y", time() + $tz_offset)) {
 864                         $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 865                         return date($format, $timestamp);
 866                 } else {
 867                         $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 868                         return date($format, $timestamp);
 869                 }
 870         }
 871
 872         function sql_bool_to_bool($s) {
 873                 if ($s == "t" || $s == "1" || strtolower($s) == "true") {
 874                         return true;
 875                 } else {
 876                         return false;
 877                 }
 878         }
 879
 880         function bool_to_sql_bool($s) {
 881                 if ($s) {
 882                         return "true";
 883                 } else {
 884                         return "false";
 885                 }
 886         }
 887
 888         // Session caching removed due to causing wrong redirects to upgrade
 889         // script when get_schema_version() is called on an obsolete session
 890         // created on a previous schema version.
 891         function get_schema_version($link, $nocache = false) {
 892                 global $schema_version;
 893
 894                 if (!$schema_version) {
 895                         $result = db_query($link, "SELECT schema_version FROM ttrss_version");
 896                         $version = db_fetch_result($result, 0, "schema_version");
 897                         $schema_version = $version;
 898                         return $version;
 899                 } else {
 900                         return $schema_version;
 901                 }
 902         }
 903
 904         function sanity_check($link) {
 905                 require_once 'errors.php';
 906
 907                 $error_code = 0;
 908                 $schema_version = get_schema_version($link, true);
 909
 910                 if ($schema_version != SCHEMA_VERSION) {
 911                         $error_code = 5;
 912                 }
 913
 914                 if (DB_TYPE == "mysql") {
 915                         $result = db_query($link, "SELECT true", false);
 916                         if (db_num_rows($result) != 1) {
 917                                 $error_code = 10;
 918                         }
 919                 }
 920
 921                 if (db_escape_string("testTEST") != "testTEST") {
 922                         $error_code = 12;
 923                 }
 924
 925                 return array("code" => $error_code, "message" => $ERRORS[$error_code]);
 926         }
 927
 928         function file_is_locked($filename) {
 929                 if (function_exists('flock')) {
 930                         $fp = @fopen(LOCK_DIRECTORY . "/$filename", "r");
 931                         if ($fp) {
 932                                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 933                                         flock($fp, LOCK_UN);
 934                                         fclose($fp);
 935                                         return false;
 936                                 }
 937                                 fclose($fp);
 938                                 return true;
 939                         } else {
 940                                 return false;
 941                         }
 942                 }
 943                 return true; // consider the file always locked and skip the test
 944         }
 945
 946         function make_lockfile($filename) {
 947                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
 948
 949                 if ($fp && flock($fp, LOCK_EX | LOCK_NB)) {
 950                         if (function_exists('posix_getpid')) {
 951                                 fwrite($fp, posix_getpid() . "\n");
 952                         }
 953                         return $fp;
 954                 } else {
 955                         return false;
 956                 }
 957         }
 958
 959         function make_stampfile($filename) {
 960                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
 961
 962                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 963                         fwrite($fp, time() . "\n");
 964                         flock($fp, LOCK_UN);
 965                         fclose($fp);
 966                         return true;
 967                 } else {
 968                         return false;
 969                 }
 970         }
 971
 972         function sql_random_function() {
 973                 if (DB_TYPE == "mysql") {
 974                         return "RAND()";
 975                 } else {
 976                         return "RANDOM()";
 977                 }
 978         }
 979
 980         function catchup_feed($link, $feed, $cat_view, $owner_uid = false, $max_id = false) {
 981
 982                         if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 983
 984                         //if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
 985
 986                         $ref_check_qpart = ($max_id &&
 987                                 !get_pref($link, 'REVERSE_HEADLINES')) ? "ref_id <= '$max_id'" : "true";
 988
 989                         if (is_numeric($feed)) {
 990                                 if ($cat_view) {
 991
 992                                         if ($feed >= 0) {
 993
 994                                                 if ($feed > 0) {
 995                                                         $children = getChildCategories($link, $feed, $owner_uid);
 996                                                         array_push($children, $feed);
 997
 998                                                         $children = join(",", $children);
 999
1000                                                         $cat_qpart = "cat_id IN ($children)";
1001                                                 } else {
1002                                                         $cat_qpart = "cat_id IS NULL";
1003                                                 }
1004
1005                                                 db_query($link, "UPDATE ttrss_user_entries
1006                                                         SET unread = false,last_read = NOW()
1007                                                         WHERE feed_id IN (SELECT id FROM ttrss_feeds WHERE $cat_qpart)
1008                                                         AND $ref_check_qpart AND unread = true
1009                                                         AND owner_uid = $owner_uid");
1010
1011                                         } else if ($feed == -2) {
1012
1013                                                 db_query($link, "UPDATE ttrss_user_entries
1014                                                         SET unread = false,last_read = NOW() WHERE (SELECT COUNT(*)
1015                                                                 FROM ttrss_user_labels2 WHERE article_id = ref_id) > 0
1016                                                                 AND $ref_check_qpart
1017                                                                 AND unread = true AND owner_uid = $owner_uid");
1018                                         }
1019
1020                                 } else if ($feed > 0) {
1021
1022                                         db_query($link, "UPDATE ttrss_user_entries
1023                                                         SET unread = false,last_read = NOW()
1024                                                         WHERE feed_id = '$feed'
1025                                                         AND $ref_check_qpart AND unread = true
1026                                                         AND owner_uid = $owner_uid");
1027
1028                                 } else if ($feed < 0 && $feed > -10) { // special, like starred
1029
1030                                         if ($feed == -1) {
1031                                                 db_query($link, "UPDATE ttrss_user_entries
1032                                                         SET unread = false,last_read = NOW()
1033                                                         WHERE marked = true
1034                                                         AND $ref_check_qpart AND unread = true
1035                                                         AND owner_uid = $owner_uid");
1036                                         }
1037
1038                                         if ($feed == -2) {
1039                                                 db_query($link, "UPDATE ttrss_user_entries
1040                                                         SET unread = false,last_read = NOW()
1041                                                         WHERE published = true
1042                                                         AND $ref_check_qpart AND unread = true
1043                                                         AND owner_uid = $owner_uid");
1044                                         }
1045
1046                                         if ($feed == -3) {
1047
1048                                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE");
1049
1050                                                 if (DB_TYPE == "pgsql") {
1051                                                         $match_part = "updated > NOW() - INTERVAL '$intl hour' ";
1052                                                 } else {
1053                                                         $match_part = "updated > DATE_SUB(NOW(),
1054                                                                 INTERVAL $intl HOUR) ";
1055                                                 }
1056
1057                                                 $result = db_query($link, "SELECT id FROM ttrss_entries,
1058                                                         ttrss_user_entries WHERE $match_part AND
1059                                                         unread = true AND
1060                                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
1061                                                         owner_uid = $owner_uid");
1062
1063                                                 $affected_ids = array();
1064
1065                                                 while ($line = db_fetch_assoc($result)) {
1066                                                         array_push($affected_ids, $line["id"]);
1067                                                 }
1068
1069                                                 catchupArticlesById($link, $affected_ids, 0);
1070                                         }
1071
1072                                         if ($feed == -4) {
1073                                                 db_query($link, "UPDATE ttrss_user_entries
1074                                                         SET unread = false,last_read = NOW()
1075                                                         WHERE $ref_check_qpart AND unread = true AND
1076                                                         owner_uid = $owner_uid");
1077                                         }
1078
1079                                 } else if ($feed < -10) { // label
1080
1081                                         $label_id = -$feed - 11;
1082
1083                                         db_query($link, "UPDATE ttrss_user_entries, ttrss_user_labels2
1084                                                 SET unread = false, last_read = NOW()
1085                                                         WHERE label_id = '$label_id' AND unread = true
1086                                                         AND $ref_check_qpart
1087                                                         AND owner_uid = '$owner_uid' AND ref_id = article_id");
1088
1089                                 }
1090
1091                                 ccache_update($link, $feed, $owner_uid, $cat_view);
1092
1093                         } else { // tag
1094                                 db_query($link, "BEGIN");
1095
1096                                 $tag_name = db_escape_string($feed);
1097
1098                                 $result = db_query($link, "SELECT post_int_id FROM ttrss_tags
1099                                         WHERE tag_name = '$tag_name' AND owner_uid = $owner_uid");
1100
1101                                 while ($line = db_fetch_assoc($result)) {
1102                                         db_query($link, "UPDATE ttrss_user_entries SET
1103                                                 unread = false, last_read = NOW()
1104                                                 WHERE $ref_check_qpart AND unread = true
1105                                                 AND int_id = " . $line["post_int_id"]);
1106                                 }
1107                                 db_query($link, "COMMIT");
1108                         }
1109         }
1110
1111         function getAllCounters($link) {
1112                 $data = getGlobalCounters($link);
1113
1114                 $data = array_merge($data, getVirtCounters($link));
1115                 $data = array_merge($data, getLabelCounters($link));
1116                 $data = array_merge($data, getFeedCounters($link, $active_feed));
1117                 $data = array_merge($data, getCategoryCounters($link));
1118
1119                 return $data;
1120         }
1121
1122         function getCategoryTitle($link, $cat_id) {
1123
1124                 if ($cat_id == -1) {
1125                         return __("Special");
1126                 } else if ($cat_id == -2) {
1127                         return __("Labels");
1128                 } else {
1129
1130                         $result = db_query($link, "SELECT title FROM ttrss_feed_categories WHERE
1131                                 id = '$cat_id'");
1132
1133                         if (db_num_rows($result) == 1) {
1134                                 return db_fetch_result($result, 0, "title");
1135                         } else {
1136                                 return __("Uncategorized");
1137                         }
1138                 }
1139         }
1140
1141
1142         function getCategoryCounters($link) {
1143                 $ret_arr = array();
1144
1145                 /* Labels category */
1146
1147                 $cv = array("id" => -2, "kind" => "cat",
1148                         "counter" => getCategoryUnread($link, -2));
1149
1150                 array_push($ret_arr, $cv);
1151
1152                 $result = db_query($link, "SELECT id AS cat_id, value AS unread,
1153                         (SELECT COUNT(id) FROM ttrss_feed_categories AS c2
1154                                 WHERE c2.parent_cat = ttrss_feed_categories.id) AS num_children
1155                         FROM ttrss_feed_categories, ttrss_cat_counters_cache
1156                         WHERE ttrss_cat_counters_cache.feed_id = id AND
1157                         ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid AND
1158                         ttrss_feed_categories.owner_uid = " . $_SESSION["uid"]);
1159
1160                 while ($line = db_fetch_assoc($result)) {
1161                         $line["cat_id"] = (int) $line["cat_id"];
1162
1163                         if ($line["num_children"] > 0) {
1164                                 $child_counter = getCategoryChildrenUnread($link, $line["cat_id"], $_SESSION["uid"]);
1165                         } else {
1166                                 $child_counter = 0;
1167                         }
1168
1169                         $cv = array("id" => $line["cat_id"], "kind" => "cat",
1170                                 "counter" => $line["unread"] + $child_counter);
1171
1172                         array_push($ret_arr, $cv);
1173                 }
1174
1175                 /* Special case: NULL category doesn't actually exist in the DB */
1176
1177                 $cv = array("id" => 0, "kind" => "cat",
1178                         "counter" => (int) ccache_find($link, 0, $_SESSION["uid"], true));
1179
1180                 array_push($ret_arr, $cv);
1181
1182                 return $ret_arr;
1183         }
1184
1185         // only accepts real cats (>= 0)
1186         function getCategoryChildrenUnread($link, $cat, $owner_uid = false) {
1187                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1188
1189                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories WHERE parent_cat = '$cat'
1190                                 AND owner_uid = $owner_uid");
1191
1192                 $unread = 0;
1193
1194                 while ($line = db_fetch_assoc($result)) {
1195                         $unread += getCategoryUnread($link, $line["id"], $owner_uid);
1196                         $unread += getCategoryChildrenUnread($link, $line["id"], $owner_uid);
1197                 }
1198
1199                 return $unread;
1200         }
1201
1202         function getCategoryUnread($link, $cat, $owner_uid = false) {
1203
1204                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1205
1206                 if ($cat >= 0) {
1207
1208                         if ($cat != 0) {
1209                                 $cat_query = "cat_id = '$cat'";
1210                         } else {
1211                                 $cat_query = "cat_id IS NULL";
1212                         }
1213
1214                         $result = db_query($link, "SELECT id FROM ttrss_feeds WHERE $cat_query
1215                                         AND owner_uid = " . $owner_uid);
1216
1217                         $cat_feeds = array();
1218                         while ($line = db_fetch_assoc($result)) {
1219                                 array_push($cat_feeds, "feed_id = " . $line["id"]);
1220                         }
1221
1222                         if (count($cat_feeds) == 0) return 0;
1223
1224                         $match_part = implode(" OR ", $cat_feeds);
1225
1226                         $result = db_query($link, "SELECT COUNT(int_id) AS unread
1227                                 FROM ttrss_user_entries
1228                                 WHERE   unread = true AND ($match_part)
1229                                 AND owner_uid = " . $owner_uid);
1230
1231                         $unread = 0;
1232
1233                         # this needs to be rewritten
1234                         while ($line = db_fetch_assoc($result)) {
1235                                 $unread += $line["unread"];
1236                         }
1237
1238                         return $unread;
1239                 } else if ($cat == -1) {
1240                         return getFeedUnread($link, -1) + getFeedUnread($link, -2) + getFeedUnread($link, -3) + getFeedUnread($link, 0);
1241                 } else if ($cat == -2) {
1242
1243                         $result = db_query($link, "
1244                                 SELECT COUNT(unread) AS unread FROM
1245                                         ttrss_user_entries, ttrss_user_labels2
1246                                 WHERE article_id = ref_id AND unread = true
1247                                         AND ttrss_user_entries.owner_uid = '$owner_uid'");
1248
1249                         $unread = db_fetch_result($result, 0, "unread");
1250
1251                         return $unread;
1252
1253                 }
1254         }
1255
1256         function getFeedUnread($link, $feed, $is_cat = false) {
1257                 return getFeedArticles($link, $feed, $is_cat, true, $_SESSION["uid"]);
1258         }
1259
1260         function getLabelUnread($link, $label_id, $owner_uid = false) {
1261                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1262
1263                 $result = db_query($link, "SELECT COUNT(ref_id) AS unread FROM ttrss_user_entries, ttrss_user_labels2
1264                         WHERE owner_uid = '$owner_uid' AND unread = true AND label_id = '$label_id' AND article_id = ref_id");
1265
1266                 if (db_num_rows($result) != 0) {
1267                         return db_fetch_result($result, 0, "unread");
1268                 } else {
1269                         return 0;
1270                 }
1271         }
1272
1273         function getFeedArticles($link, $feed, $is_cat = false, $unread_only = false,
1274                 $owner_uid = false) {
1275
1276                 $n_feed = (int) $feed;
1277                 $need_entries = false;
1278
1279                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1280
1281                 if ($unread_only) {
1282                         $unread_qpart = "unread = true";
1283                 } else {
1284                         $unread_qpart = "true";
1285                 }
1286
1287                 if ($is_cat) {
1288                         return getCategoryUnread($link, $n_feed, $owner_uid);
1289                 } else if ($n_feed == -6) {
1290                         return 0;
1291                 } else if ($feed != "0" && $n_feed == 0) {
1292
1293                         $feed = db_escape_string($feed);
1294
1295                         $result = db_query($link, "SELECT SUM((SELECT COUNT(int_id)
1296                                 FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1297                                         AND ref_id = id AND $unread_qpart)) AS count FROM ttrss_tags
1298                                 WHERE owner_uid = $owner_uid AND tag_name = '$feed'");
1299                         return db_fetch_result($result, 0, "count");
1300
1301                 } else if ($n_feed == -1) {
1302                         $match_part = "marked = true";
1303                 } else if ($n_feed == -2) {
1304                         $match_part = "published = true";
1305                 } else if ($n_feed == -3) {
1306                         $match_part = "unread = true AND score >= 0";
1307
1308                         $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
1309
1310                         if (DB_TYPE == "pgsql") {
1311                                 $match_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
1312                         } else {
1313                                 $match_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
1314                         }
1315
1316                         $need_entries = true;
1317
1318                 } else if ($n_feed == -4) {
1319                         $match_part = "true";
1320                 } else if ($n_feed >= 0) {
1321
1322                         if ($n_feed != 0) {
1323                                 $match_part = "feed_id = '$n_feed'";
1324                         } else {
1325                                 $match_part = "feed_id IS NULL";
1326                         }
1327
1328                 } else if ($feed < -10) {
1329
1330                         $label_id = -$feed - 11;
1331
1332                         return getLabelUnread($link, $label_id, $owner_uid);
1333
1334                 }
1335
1336                 if ($match_part) {
1337
1338                         if ($need_entries) {
1339                                 $from_qpart = "ttrss_user_entries,ttrss_entries";
1340                                 $from_where = "ttrss_entries.id = ttrss_user_entries.ref_id AND";
1341                         } else {
1342                                 $from_qpart = "ttrss_user_entries";
1343                         }
1344
1345                         $query = "SELECT count(int_id) AS unread
1346                                 FROM $from_qpart WHERE
1347                                 $unread_qpart AND $from_where ($match_part) AND ttrss_user_entries.owner_uid = $owner_uid";
1348
1349                         //echo "[$feed/$query]\n";
1350
1351                         $result = db_query($link, $query);
1352
1353                 } else {
1354
1355                         $result = db_query($link, "SELECT COUNT(post_int_id) AS unread
1356                                 FROM ttrss_tags,ttrss_user_entries,ttrss_entries
1357                                 WHERE tag_name = '$feed' AND post_int_id = int_id AND ref_id = ttrss_entries.id
1358                                 AND $unread_qpart AND ttrss_tags.owner_uid = " . $owner_uid);
1359                 }
1360
1361                 $unread = db_fetch_result($result, 0, "unread");
1362
1363                 return $unread;
1364         }
1365
1366         function getGlobalUnread($link, $user_id = false) {
1367
1368                 if (!$user_id) {
1369                         $user_id = $_SESSION["uid"];
1370                 }
1371
1372                 $result = db_query($link, "SELECT SUM(value) AS c_id FROM ttrss_counters_cache
1373                         WHERE owner_uid = '$user_id' AND feed_id > 0");
1374
1375                 $c_id = db_fetch_result($result, 0, "c_id");
1376
1377                 return $c_id;
1378         }
1379
1380         function getGlobalCounters($link, $global_unread = -1) {
1381                 $ret_arr = array();
1382
1383                 if ($global_unread == -1) {
1384                         $global_unread = getGlobalUnread($link);
1385                 }
1386
1387                 $cv = array("id" => "global-unread",
1388                         "counter" => (int) $global_unread);
1389
1390                 array_push($ret_arr, $cv);
1391
1392                 $result = db_query($link, "SELECT COUNT(id) AS fn FROM
1393                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1394
1395                 $subscribed_feeds = db_fetch_result($result, 0, "fn");
1396
1397                 $cv = array("id" => "subscribed-feeds",
1398                         "counter" => (int) $subscribed_feeds);
1399
1400                 array_push($ret_arr, $cv);
1401
1402                 return $ret_arr;
1403         }
1404
1405         function getVirtCounters($link) {
1406
1407                 $ret_arr = array();
1408
1409                 for ($i = 0; $i >= -4; $i--) {
1410
1411                         $count = getFeedUnread($link, $i);
1412
1413                         $cv = array("id" => $i,
1414                                 "counter" => (int) $count);
1415
1416 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1417 //                              $cv["xmsg"] = getFeedArticles($link, $i)." ".__("total");
1418
1419                         array_push($ret_arr, $cv);
1420                 }
1421
1422                 return $ret_arr;
1423         }
1424
1425         function getLabelCounters($link, $descriptions = false) {
1426
1427                 $ret_arr = array();
1428
1429                 $owner_uid = $_SESSION["uid"];
1430
1431                 $result = db_query($link, "SELECT id,caption,COUNT(unread) AS unread
1432                         FROM ttrss_labels2 LEFT JOIN ttrss_user_labels2 ON
1433                                 (ttrss_labels2.id = label_id)
1434                                         LEFT JOIN ttrss_user_entries ON (ref_id = article_id AND unread = true)
1435                                 WHERE ttrss_labels2.owner_uid = $owner_uid GROUP BY ttrss_labels2.id,
1436                                         ttrss_labels2.caption");
1437
1438                 while ($line = db_fetch_assoc($result)) {
1439
1440                         $id = -$line["id"] - 11;
1441
1442                         $label_name = $line["caption"];
1443                         $count = $line["unread"];
1444
1445                         $cv = array("id" => $id,
1446                                 "counter" => (int) $count);
1447
1448                         if ($descriptions)
1449                                 $cv["description"] = $label_name;
1450
1451 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1452 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1453
1454                         array_push($ret_arr, $cv);
1455                 }
1456
1457                 return $ret_arr;
1458         }
1459
1460         function getFeedCounters($link, $active_feed = false) {
1461
1462                 $ret_arr = array();
1463
1464                 $query = "SELECT ttrss_feeds.id,
1465                                 ttrss_feeds.title,
1466                                 ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
1467                                 last_error, value AS count
1468                         FROM ttrss_feeds, ttrss_counters_cache
1469                         WHERE ttrss_feeds.owner_uid = ".$_SESSION["uid"]."
1470                                 AND ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid
1471                                 AND ttrss_counters_cache.feed_id = id";
1472
1473                 $result = db_query($link, $query);
1474                 $fctrs_modified = false;
1475
1476                 while ($line = db_fetch_assoc($result)) {
1477
1478                         $id = $line["id"];
1479                         $count = $line["count"];
1480                         $last_error = htmlspecialchars($line["last_error"]);
1481
1482                         $last_updated = make_local_datetime($link, $line['last_updated'], false);
1483
1484                         $has_img = feed_has_icon($id);
1485
1486                         if (date('Y') - date('Y', strtotime($line['last_updated'])) > 2)
1487                                 $last_updated = '';
1488
1489                         $cv = array("id" => $id,
1490                                 "updated" => $last_updated,
1491                                 "counter" => (int) $count,
1492                                 "has_img" => (int) $has_img);
1493
1494                         if ($last_error)
1495                                 $cv["error"] = $last_error;
1496
1497 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1498 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1499
1500                         if ($active_feed && $id == $active_feed)
1501                                 $cv["title"] = truncate_string($line["title"], 30);
1502
1503                         array_push($ret_arr, $cv);
1504
1505                 }
1506
1507                 return $ret_arr;
1508         }
1509
1510         function get_pgsql_version($link) {
1511                 $result = db_query($link, "SELECT version() AS version");
1512                 $version = explode(" ", db_fetch_result($result, 0, "version"));
1513                 return $version[1];
1514         }
1515
1516         /**
1517          * @return array (code => Status code, message => error message if available)
1518          *
1519          *                 0 - OK, Feed already exists
1520          *                 1 - OK, Feed added
1521          *                 2 - Invalid URL
1522          *                 3 - URL content is HTML, no feeds available
1523          *                 4 - URL content is HTML which contains multiple feeds.
1524          *                     Here you should call extractfeedurls in rpc-backend
1525          *                     to get all possible feeds.
1526          *                 5 - Couldn't download the URL content.
1527          */
1528         function subscribe_to_feed($link, $url, $cat_id = 0,
1529                         $auth_login = '', $auth_pass = '', $need_auth = false) {
1530
1531                 global $fetch_last_error;
1532
1533                 require_once "include/rssfuncs.php";
1534
1535                 $url = fix_url($url);
1536
1537                 if (!$url || !validate_feed_url($url)) return array("code" => 2);
1538
1539                 $contents = @fetch_file_contents($url, false, $auth_login, $auth_pass);
1540
1541                 if (!$contents) {
1542                         return array("code" => 5, "message" => $fetch_last_error);
1543                 }
1544
1545                 if (is_html($contents)) {
1546                         $feedUrls = get_feeds_from_html($url, $contents);
1547
1548                         if (count($feedUrls) == 0) {
1549                                 return array("code" => 3);
1550                         } else if (count($feedUrls) > 1) {
1551                                 return array("code" => 4, "feeds" => $feedUrls);
1552                         }
1553                         //use feed url as new URL
1554                         $url = key($feedUrls);
1555                 }
1556
1557                 if ($cat_id == "0" || !$cat_id) {
1558                         $cat_qpart = "NULL";
1559                 } else {
1560                         $cat_qpart = "'$cat_id'";
1561                 }
1562
1563                 $result = db_query($link,
1564                         "SELECT id FROM ttrss_feeds
1565                         WHERE feed_url = '$url' AND owner_uid = ".$_SESSION["uid"]);
1566
1567                 if (db_num_rows($result) == 0) {
1568                         $result = db_query($link,
1569                                 "INSERT INTO ttrss_feeds
1570                                         (owner_uid,feed_url,title,cat_id, auth_login,auth_pass,update_method)
1571                                 VALUES ('".$_SESSION["uid"]."', '$url',
1572                                 '[Unknown]', $cat_qpart, '$auth_login', '$auth_pass', 0)");
1573
1574                         $result = db_query($link,
1575                                 "SELECT id FROM ttrss_feeds WHERE feed_url = '$url'
1576                                         AND owner_uid = " . $_SESSION["uid"]);
1577
1578                         $feed_id = db_fetch_result($result, 0, "id");
1579
1580                         if ($feed_id) {
1581                                 update_rss_feed($link, $feed_id, true);
1582                         }
1583
1584                         return array("code" => 1);
1585                 } else {
1586                         return array("code" => 0);
1587                 }
1588         }
1589
1590         function print_feed_select($link, $id, $default_id = "",
1591                 $attributes = "", $include_all_feeds = true,
1592                 $root_id = false, $nest_level = 0) {
1593
1594                 if (!$root_id) {
1595                         print "<select id=\"$id\" name=\"$id\" $attributes>";
1596                         if ($include_all_feeds) {
1597                                 $is_selected = ("0" == $default_id) ? "selected=\"1\"" : "";
1598                                 print "<option $is_selected value=\"0\">".__('All feeds')."</option>";
1599                         }
1600                 }
1601
1602                 if (get_pref($link, 'ENABLE_FEED_CATS')) {
1603
1604                         if ($root_id)
1605                                 $parent_qpart = "parent_cat = '$root_id'";
1606                         else
1607                                 $parent_qpart = "parent_cat IS NULL";
1608
1609                         $result = db_query($link, "SELECT id,title,
1610                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1611                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1612                                 FROM ttrss_feed_categories
1613                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1614
1615                         while ($line = db_fetch_assoc($result)) {
1616
1617                                 for ($i = 0; $i < $nest_level; $i++)
1618                                         $line["title"] = " - " . $line["title"];
1619
1620                                 $is_selected = ("CAT:".$line["id"] == $default_id) ? "selected=\"1\"" : "";
1621
1622                                 printf("<option $is_selected value='CAT:%d'>%s</option>",
1623                                         $line["id"], htmlspecialchars($line["title"]));
1624
1625                                 if ($line["num_children"] > 0)
1626                                         print_feed_select($link, $id, $default_id, $attributes,
1627                                                 $include_all_feeds, $line["id"], $nest_level+1);
1628
1629                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1630                                         WHERE cat_id = '".$line["id"]."' AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1631
1632                                 while ($fline = db_fetch_assoc($feed_result)) {
1633                                         $is_selected = ($fline["id"] == $default_id) ? "selected=\"1\"" : "";
1634
1635                                         $fline["title"] = " + " . $fline["title"];
1636
1637                                         for ($i = 0; $i < $nest_level; $i++)
1638                                                 $fline["title"] = " - " . $fline["title"];
1639
1640                                         printf("<option $is_selected value='%d'>%s</option>",
1641                                                 $fline["id"], htmlspecialchars($fline["title"]));
1642                                 }
1643                         }
1644
1645                         if (!$root_id) {
1646                                 $is_selected = ($default_id == "CAT:0") ? "selected=\"1\"" : "";
1647
1648                                 printf("<option $is_selected value='CAT:0'>%s</option>",
1649                                         __("Uncategorized"));
1650
1651                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1652                                         WHERE cat_id IS NULL AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1653
1654                                 while ($fline = db_fetch_assoc($feed_result)) {
1655                                         $is_selected = ($fline["id"] == $default_id && !$default_is_cat) ? "selected=\"1\"" : "";
1656
1657                                         $fline["title"] = " + " . $fline["title"];
1658
1659                                         for ($i = 0; $i < $nest_level; $i++)
1660                                                 $fline["title"] = " - " . $fline["title"];
1661
1662                                         printf("<option $is_selected value='%d'>%s</option>",
1663                                                 $fline["id"], htmlspecialchars($fline["title"]));
1664                                 }
1665                         }
1666
1667                 } else {
1668                         $result = db_query($link, "SELECT id,title FROM ttrss_feeds
1669                                 WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
1670
1671                         while ($line = db_fetch_assoc($result)) {
1672
1673                                 $is_selected = ($line["id"] == $default_id) ? "selected=\"1\"" : "";
1674
1675                                 printf("<option $is_selected value='%d'>%s</option>",
1676                                         $line["id"], htmlspecialchars($line["title"]));
1677                         }
1678                 }
1679
1680                 if (!$root_id) {
1681                         print "</select>";
1682                 }
1683         }
1684
1685         function print_feed_cat_select($link, $id, $default_id,
1686                 $attributes, $include_all_cats = true, $root_id = false, $nest_level = 0) {
1687
1688                         if (!$root_id) {
1689                                         print "<select id=\"$id\" name=\"$id\" default=\"$default_id\" onchange=\"catSelectOnChange(this)\" $attributes>";
1690                         }
1691
1692                         if ($root_id)
1693                                 $parent_qpart = "parent_cat = '$root_id'";
1694                         else
1695                                 $parent_qpart = "parent_cat IS NULL";
1696
1697                         $result = db_query($link, "SELECT id,title,
1698                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1699                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1700                                 FROM ttrss_feed_categories
1701                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1702
1703                         while ($line = db_fetch_assoc($result)) {
1704                                 if ($line["id"] == $default_id) {
1705                                         $is_selected = "selected=\"1\"";
1706                                 } else {
1707                                         $is_selected = "";
1708                                 }
1709
1710                                 for ($i = 0; $i < $nest_level; $i++)
1711                                         $line["title"] = " - " . $line["title"];
1712
1713                                 if ($line["title"])
1714                                         printf("<option $is_selected value='%d'>%s</option>",
1715                                                 $line["id"], htmlspecialchars($line["title"]));
1716
1717                                 if ($line["num_children"] > 0)
1718                                         print_feed_cat_select($link, $id, $default_id, $attributes,
1719                                                 $include_all_cats, $line["id"], $nest_level+1);
1720                         }
1721
1722                         if (!$root_id) {
1723                                 if ($include_all_cats) {
1724                                         if (db_num_rows($result) > 0) {
1725                                                 print "<option disabled=\"1\">--------</option>";
1726                                         }
1727
1728                                         if ($default_id == 0) {
1729                                                 $is_selected = "selected=\"1\"";
1730                                         } else {
1731                                                 $is_selected = "";
1732                                         }
1733
1734                                         print "<option $is_selected value=\"0\">".__('Uncategorized')."</option>";
1735                                 }
1736                                 print "</select>";
1737                         }
1738                 }
1739
1740         function checkbox_to_sql_bool($val) {
1741                 return ($val == "on") ? "true" : "false";
1742         }
1743
1744         function getFeedCatTitle($link, $id) {
1745                 if ($id == -1) {
1746                         return __("Special");
1747                 } else if ($id < -10) {
1748                         return __("Labels");
1749                 } else if ($id > 0) {
1750                         $result = db_query($link, "SELECT ttrss_feed_categories.title
1751                                 FROM ttrss_feeds, ttrss_feed_categories WHERE ttrss_feeds.id = '$id' AND
1752                                         cat_id = ttrss_feed_categories.id");
1753                         if (db_num_rows($result) == 1) {
1754                                 return db_fetch_result($result, 0, "title");
1755                         } else {
1756                                 return __("Uncategorized");
1757                         }
1758                 } else {
1759                         return "getFeedCatTitle($id) failed";
1760                 }
1761
1762         }
1763
1764         function getFeedIcon($id) {
1765                 switch ($id) {
1766                 case 0:
1767                         return "images/archive.png";
1768                         break;
1769                 case -1:
1770                         return "images/mark_set.svg";
1771                         break;
1772                 case -2:
1773                         return "images/pub_set.svg";
1774                         break;
1775                 case -3:
1776                         return "images/fresh.png";
1777                         break;
1778                 case -4:
1779                         return "images/tag.png";
1780                         break;
1781                 case -6:
1782                         return "images/recently_read.png";
1783                         break;
1784                 default:
1785                         if ($id < -10) {
1786                                 return "images/label.png";
1787                         } else {
1788                                 if (file_exists(ICONS_DIR . "/$id.ico"))
1789                                         return ICONS_URL . "/$id.ico";
1790                         }
1791                         break;
1792                 }
1793         }
1794
1795         function getFeedTitle($link, $id, $cat = false) {
1796                 if ($cat) {
1797                         return getCategoryTitle($link, $id);
1798                 } else if ($id == -1) {
1799                         return __("Starred articles");
1800                 } else if ($id == -2) {
1801                         return __("Published articles");
1802                 } else if ($id == -3) {
1803                         return __("Fresh articles");
1804                 } else if ($id == -4) {
1805                         return __("All articles");
1806                 } else if ($id === 0 || $id === "0") {
1807                         return __("Archived articles");
1808                 } else if ($id == -6) {
1809                         return __("Recently read");
1810                 } else if ($id < -10) {
1811                         $label_id = -$id - 11;
1812                         $result = db_query($link, "SELECT caption FROM ttrss_labels2 WHERE id = '$label_id'");
1813                         if (db_num_rows($result) == 1) {
1814                                 return db_fetch_result($result, 0, "caption");
1815                         } else {
1816                                 return "Unknown label ($label_id)";
1817                         }
1818
1819                 } else if (is_numeric($id) && $id > 0) {
1820                         $result = db_query($link, "SELECT title FROM ttrss_feeds WHERE id = '$id'");
1821                         if (db_num_rows($result) == 1) {
1822                                 return db_fetch_result($result, 0, "title");
1823                         } else {
1824                                 return "Unknown feed ($id)";
1825                         }
1826                 } else {
1827                         return $id;
1828                 }
1829         }
1830
1831         function make_init_params($link) {
1832                 $params = array();
1833
1834                 $params["sign_progress"] = "images/indicator_white.gif";
1835                 $params["sign_progress_tiny"] = "images/indicator_tiny.gif";
1836                 $params["sign_excl"] = "images/sign_excl.svg";
1837                 $params["sign_info"] = "images/sign_info.svg";
1838
1839                 foreach (array("ON_CATCHUP_SHOW_NEXT_FEED", "HIDE_READ_FEEDS",
1840                         "ENABLE_FEED_CATS", "FEEDS_SORT_BY_UNREAD", "CONFIRM_FEED_CATCHUP",
1841                         "CDM_AUTO_CATCHUP", "FRESH_ARTICLE_MAX_AGE", "DEFAULT_ARTICLE_LIMIT",
1842                         "HIDE_READ_SHOWS_SPECIAL", "COMBINED_DISPLAY_MODE") as $param) {
1843
1844                                  $params[strtolower($param)] = (int) get_pref($link, $param);
1845                  }
1846
1847                 $params["icons_url"] = ICONS_URL;
1848                 $params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
1849                 $params["default_view_mode"] = get_pref($link, "_DEFAULT_VIEW_MODE");
1850                 $params["default_view_limit"] = (int) get_pref($link, "_DEFAULT_VIEW_LIMIT");
1851                 $params["default_view_order_by"] = get_pref($link, "_DEFAULT_VIEW_ORDER_BY");
1852                 $params["bw_limit"] = (int) $_SESSION["bw_limit"];
1853
1854                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
1855                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1856
1857                 $max_feed_id = db_fetch_result($result, 0, "mid");
1858                 $num_feeds = db_fetch_result($result, 0, "nf");
1859
1860                 $params["max_feed_id"] = (int) $max_feed_id;
1861                 $params["num_feeds"] = (int) $num_feeds;
1862
1863                 $params["collapsed_feedlist"] = (int) get_pref($link, "_COLLAPSED_FEEDLIST");
1864                 $params["hotkeys"] = get_hotkeys_map($link);
1865
1866                 $params["csrf_token"] = $_SESSION["csrf_token"];
1867                 $params["widescreen"] = (int) $_COOKIE["ttrss_widescreen"];
1868
1869                 $params['simple_update'] = defined('SIMPLE_UPDATE_MODE') && SIMPLE_UPDATE_MODE;
1870
1871                 return $params;
1872         }
1873
1874         function get_hotkeys_info($link) {
1875                 $hotkeys = array(
1876                         __("Navigation") => array(
1877                                 "next_feed" => __("Open next feed"),
1878                                 "prev_feed" => __("Open previous feed"),
1879                                 "next_article" => __("Open next article"),
1880                                 "prev_article" => __("Open previous article"),
1881                                 "next_article_noscroll" => __("Open next article (don't scroll long articles)"),
1882                                 "prev_article_noscroll" => __("Open previous article (don't scroll long articles)"),
1883                                 "search_dialog" => __("Show search dialog")),
1884                         __("Article") => array(
1885                                 "toggle_mark" => __("Toggle starred"),
1886                                 "toggle_publ" => __("Toggle published"),
1887                                 "toggle_unread" => __("Toggle unread"),
1888                                 "edit_tags" => __("Edit tags"),
1889                                 "dismiss_selected" => __("Dismiss selected"),
1890                                 "dismiss_read" => __("Dismiss read"),
1891                                 "open_in_new_window" => __("Open in new window"),
1892                                 "catchup_below" => __("Mark below as read"),
1893                                 "catchup_above" => __("Mark above as read"),
1894                                 "article_scroll_down" => __("Scroll down"),
1895                                 "article_scroll_up" => __("Scroll up"),
1896                                 "select_article_cursor" => __("Select article under cursor"),
1897                                 "email_article" => __("Email article"),
1898                                 "close_article" => __("Close/collapse article"),
1899                                 "toggle_widescreen" => __("Toggle widescreen mode")),
1900                         __("Article selection") => array(
1901                                 "select_all" => __("Select all articles"),
1902                                 "select_unread" => __("Select unread"),
1903                                 "select_marked" => __("Select starred"),
1904                                 "select_published" => __("Select published"),
1905                                 "select_invert" => __("Invert selection"),
1906                                 "select_none" => __("Deselect everything")),
1907                         __("Feed") => array(
1908                                 "feed_refresh" => __("Refresh current feed"),
1909                                 "feed_unhide_read" => __("Un/hide read feeds"),
1910                                 "feed_subscribe" => __("Subscribe to feed"),
1911                                 "feed_edit" => __("Edit feed"),
1912                                 "feed_catchup" => __("Mark as read"),
1913                                 "feed_reverse" => __("Reverse headlines"),
1914                                 "feed_debug_update" => __("Debug feed update"),
1915                                 "catchup_all" => __("Mark all feeds as read"),
1916                                 "cat_toggle_collapse" => __("Un/collapse current category"),
1917                                 "toggle_combined_mode" => __("Toggle combined mode")),
1918                         __("Go to") => array(
1919                                 "goto_all" => __("All articles"),
1920                                 "goto_fresh" => __("Fresh"),
1921                                 "goto_marked" => __("Starred"),
1922                                 "goto_published" => __("Published"),
1923                                 "goto_tagcloud" => __("Tag cloud"),
1924                                 "goto_prefs" => __("Preferences")),
1925                         __("Other") => array(
1926                                 "create_label" => __("Create label"),
1927                                 "create_filter" => __("Create filter"),
1928                                 "collapse_sidebar" => __("Un/collapse sidebar"),
1929                                 "help_dialog" => __("Show help dialog"))
1930                         );
1931
1932                 return $hotkeys;
1933         }
1934
1935         function get_hotkeys_map($link) {
1936                 $hotkeys = array(
1937 //                      "navigation" => array(
1938                                 "k" => "next_feed",
1939                                 "j" => "prev_feed",
1940                                 "n" => "next_article",
1941                                 "p" => "prev_article",
1942                                 "(38)|up" => "prev_article",
1943                                 "(40)|down" => "next_article",
1944 //                              "^(38)|Ctrl-up" => "prev_article_noscroll",
1945 //                              "^(40)|Ctrl-down" => "next_article_noscroll",
1946                                 "(191)|/" => "search_dialog",
1947 //                      "article" => array(
1948                                 "s" => "toggle_mark",
1949                                 "*s" => "toggle_publ",
1950                                 "u" => "toggle_unread",
1951                                 "*t" => "edit_tags",
1952                                 "*d" => "dismiss_selected",
1953                                 "*x" => "dismiss_read",
1954                                 "o" => "open_in_new_window",
1955                                 "c p" => "catchup_below",
1956                                 "c n" => "catchup_above",
1957                                 "*n" => "article_scroll_down",
1958                                 "*p" => "article_scroll_up",
1959                                 "*(38)|Shift+up" => "article_scroll_up",
1960                                 "*(40)|Shift+down" => "article_scroll_down",
1961                                 "a *w" => "toggle_widescreen",
1962                                 "e" => "email_article",
1963                                 "a q" => "close_article",
1964 //                      "article_selection" => array(
1965                                 "a a" => "select_all",
1966                                 "a u" => "select_unread",
1967                                 "a *u" => "select_marked",
1968                                 "a p" => "select_published",
1969                                 "a i" => "select_invert",
1970                                 "a n" => "select_none",
1971 //                      "feed" => array(
1972                                 "f r" => "feed_refresh",
1973                                 "f a" => "feed_unhide_read",
1974                                 "f s" => "feed_subscribe",
1975                                 "f e" => "feed_edit",
1976                                 "f q" => "feed_catchup",
1977                                 "f x" => "feed_reverse",
1978                                 "f *d" => "feed_debug_update",
1979                                 "f *c" => "toggle_combined_mode",
1980                                 "*q" => "catchup_all",
1981                                 "x" => "cat_toggle_collapse",
1982 //                      "goto" => array(
1983                                 "g a" => "goto_all",
1984                                 "g f" => "goto_fresh",
1985                                 "g s" => "goto_marked",
1986                                 "g p" => "goto_published",
1987                                 "g t" => "goto_tagcloud",
1988                                 "g *p" => "goto_prefs",
1989 //                      "other" => array(
1990                                 "(9)|Tab" => "select_article_cursor", // tab
1991                                 "c l" => "create_label",
1992                                 "c f" => "create_filter",
1993                                 "c s" => "collapse_sidebar",
1994                                 "^(191)|Ctrl+/" => "help_dialog",
1995                         );
1996
1997                 if (get_pref($link, 'COMBINED_DISPLAY_MODE')) {
1998                         $hotkeys["^(38)|Ctrl-up"] = "prev_article_noscroll";
1999                         $hotkeys["^(40)|Ctrl-down"] = "next_article_noscroll";
2000                 }
2001
2002                 global $pluginhost;
2003                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_HOTKEY_MAP) as $plugin) {
2004                         $hotkeys = $plugin->hook_hotkey_map($hotkeys);
2005                 }
2006
2007                 $prefixes = array();
2008
2009                 foreach (array_keys($hotkeys) as $hotkey) {
2010                         $pair = explode(" ", $hotkey, 2);
2011
2012                         if (count($pair) > 1 && !in_array($pair[0], $prefixes)) {
2013                                 array_push($prefixes, $pair[0]);
2014                         }
2015                 }
2016
2017                 return array($prefixes, $hotkeys);
2018         }
2019
2020         function make_runtime_info($link) {
2021                 $data = array();
2022
2023                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2024                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2025
2026                 $max_feed_id = db_fetch_result($result, 0, "mid");
2027                 $num_feeds = db_fetch_result($result, 0, "nf");
2028
2029                 $data["max_feed_id"] = (int) $max_feed_id;
2030                 $data["num_feeds"] = (int) $num_feeds;
2031
2032                 $data['last_article_id'] = getLastArticleId($link);
2033                 $data['cdm_expanded'] = get_pref($link, 'CDM_EXPANDED');
2034
2035                 if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
2036
2037                         $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
2038
2039                         if (time() - $_SESSION["daemon_stamp_check"] > 30) {
2040
2041                                 $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
2042
2043                                 if ($stamp) {
2044                                         $stamp_delta = time() - $stamp;
2045
2046                                         if ($stamp_delta > 1800) {
2047                                                 $stamp_check = 0;
2048                                         } else {
2049                                                 $stamp_check = 1;
2050                                                 $_SESSION["daemon_stamp_check"] = time();
2051                                         }
2052
2053                                         $data['daemon_stamp_ok'] = $stamp_check;
2054
2055                                         $stamp_fmt = date("Y.m.d, G:i", $stamp);
2056
2057                                         $data['daemon_stamp'] = $stamp_fmt;
2058                                 }
2059                         }
2060                 }
2061
2062                 if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
2063                                 $new_version_details = @check_for_update($link);
2064
2065                                 $data['new_version_available'] = (int) ($new_version_details != false);
2066
2067                                 $_SESSION["last_version_check"] = time();
2068                                 $_SESSION["version_data"] = $new_version_details;
2069                 }
2070
2071                 return $data;
2072         }
2073
2074         function search_to_sql($link, $search) {
2075
2076                 $search_query_part = "";
2077
2078                 $keywords = explode(" ", $search);
2079                 $query_keywords = array();
2080
2081                 foreach ($keywords as $k) {
2082                         if (strpos($k, "-") === 0) {
2083                                 $k = substr($k, 1);
2084                                 $not = "NOT";
2085                         } else {
2086                                 $not = "";
2087                         }
2088
2089                         $commandpair = explode(":", mb_strtolower($k), 2);
2090
2091                         if ($commandpair[0] == "note" && $commandpair[1]) {
2092
2093                                 if ($commandpair[1] == "true")
2094                                         array_push($query_keywords, "($not (note IS NOT NULL AND note != ''))");
2095                                 else
2096                                         array_push($query_keywords, "($not (note IS NULL OR note = ''))");
2097
2098                         } else if ($commandpair[0] == "star" && $commandpair[1]) {
2099
2100                                 if ($commandpair[1] == "true")
2101                                         array_push($query_keywords, "($not (marked = true))");
2102                                 else
2103                                         array_push($query_keywords, "($not (marked = false))");
2104
2105                         } else if ($commandpair[0] == "pub" && $commandpair[1]) {
2106
2107                                 if ($commandpair[1] == "true")
2108                                         array_push($query_keywords, "($not (published = true))");
2109                                 else
2110                                         array_push($query_keywords, "($not (published = false))");
2111
2112                         } else if (strpos($k, "@") === 0) {
2113
2114                                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $_SESSION['uid']);
2115                                 $orig_ts = strtotime(substr($k, 1));
2116                                 $k = date("Y-m-d", convert_timestamp($orig_ts, $user_tz_string, 'UTC'));
2117
2118                                 //$k = date("Y-m-d", strtotime(substr($k, 1)));
2119
2120                                 array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
2121                         } else {
2122                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2123                                                 OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2124                         }
2125                 }
2126
2127                 $search_query_part = implode("AND", $query_keywords);
2128
2129                 return $search_query_part;
2130         }
2131
2132         function getParentCategories($link, $cat, $owner_uid) {
2133                 $rv = array();
2134
2135                 $result = db_query($link, "SELECT parent_cat FROM ttrss_feed_categories
2136                         WHERE id = '$cat' AND parent_cat IS NOT NULL AND owner_uid = $owner_uid");
2137
2138                 while ($line = db_fetch_assoc($result)) {
2139                         array_push($rv, $line["parent_cat"]);
2140                         $rv = array_merge($rv, getParentCategories($link, $line["parent_cat"], $owner_uid));
2141                 }
2142
2143                 return $rv;
2144         }
2145
2146         function getChildCategories($link, $cat, $owner_uid) {
2147                 $rv = array();
2148
2149                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories
2150                         WHERE parent_cat = '$cat' AND owner_uid = $owner_uid");
2151
2152                 while ($line = db_fetch_assoc($result)) {
2153                         array_push($rv, $line["id"]);
2154                         $rv = array_merge($rv, getChildCategories($link, $line["id"], $owner_uid));
2155                 }
2156
2157                 return $rv;
2158         }
2159
2160         function queryFeedHeadlines($link, $feed, $limit, $view_mode, $cat_view, $search, $search_mode, $override_order = false, $offset = 0, $owner_uid = 0, $filter = false, $since_id = 0, $include_children = false, $ignore_vfeed_group = false) {
2161
2162                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2163
2164                 $ext_tables_part = "";
2165
2166                         if ($search) {
2167
2168                                 if (SPHINX_ENABLED) {
2169                                         $ids = join(",", @sphinx_search($search, 0, 500));
2170
2171                                         if ($ids)
2172                                                 $search_query_part = "ref_id IN ($ids) AND ";
2173                                         else
2174                                                 $search_query_part = "ref_id = -1 AND ";
2175
2176                                 } else {
2177                                         $search_query_part = search_to_sql($link, $search);
2178                                         $search_query_part .= " AND ";
2179                                 }
2180
2181                         } else {
2182                                 $search_query_part = "";
2183                         }
2184
2185                         if ($filter) {
2186
2187                                 if (DB_TYPE == "pgsql") {
2188                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '14 days' ";
2189                                 } else {
2190                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL 14 DAY) ";
2191                                 }
2192
2193                                 $override_order = "updated DESC";
2194
2195                                 $filter_query_part = filter_to_sql($link, $filter, $owner_uid);
2196
2197                                 // Try to check if SQL regexp implementation chokes on a valid regexp
2198                                 $result = db_query($link, "SELECT true AS true_val FROM ttrss_entries,
2199                                         ttrss_user_entries, ttrss_feeds, ttrss_feed_categories
2200                                         WHERE $filter_query_part LIMIT 1", false);
2201
2202                                 if ($result) {
2203                                         $test = db_fetch_result($result, 0, "true_val");
2204
2205                                         if (!$test) {
2206                                                 $filter_query_part = "false AND";
2207                                         } else {
2208                                                 $filter_query_part .= " AND";
2209                                         }
2210                                 } else {
2211                                         $filter_query_part = "false AND";
2212                                 }
2213
2214                         } else {
2215                                 $filter_query_part = "";
2216                         }
2217
2218                         if ($since_id) {
2219                                 $since_id_part = "ttrss_entries.id > $since_id AND ";
2220                         } else {
2221                                 $since_id_part = "";
2222                         }
2223
2224                         $view_query_part = "";
2225
2226                         if ($view_mode == "adaptive" || $view_query_part == "noscores") {
2227                                 if ($search) {
2228                                         $view_query_part = " ";
2229                                 } else if ($feed != -1) {
2230                                         $unread = getFeedUnread($link, $feed, $cat_view);
2231
2232                                         if ($cat_view && $feed > 0 && $include_children)
2233                                                 $unread += getCategoryChildrenUnread($link, $feed);
2234
2235                                         if ($unread > 0) {
2236                                                 $view_query_part = " unread = true AND ";
2237                                         }
2238                                 }
2239                         }
2240
2241                         if ($view_mode == "marked") {
2242                                 $view_query_part = " marked = true AND ";
2243                         }
2244
2245                         if ($view_mode == "published") {
2246                                 $view_query_part = " published = true AND ";
2247                         }
2248
2249                         if ($view_mode == "unread") {
2250                                 $view_query_part = " unread = true AND ";
2251                         }
2252
2253                         if ($view_mode == "updated") {
2254                                 $view_query_part = " (last_read is null and unread = false) AND ";
2255                         }
2256
2257                         if ($limit > 0) {
2258                                 $limit_query_part = "LIMIT " . $limit;
2259                         }
2260
2261                         $allow_archived = false;
2262
2263                         $vfeed_query_part = "";
2264
2265                         // override query strategy and enable feed display when searching globally
2266                         if ($search && $search_mode == "all_feeds") {
2267                                 $query_strategy_part = "true";
2268                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2269                         /* tags */
2270                         } else if (!is_numeric($feed)) {
2271                                 $query_strategy_part = "true";
2272                                 $vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
2273                                         id = feed_id) as feed_title,";
2274                         } else if ($search && $search_mode == "this_cat") {
2275                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2276
2277                                 if ($feed > 0) {
2278                                         if ($include_children) {
2279                                                 $subcats = getChildCategories($link, $feed, $owner_uid);
2280                                                 array_push($subcats, $feed);
2281                                                 $cats_qpart = join(",", $subcats);
2282                                         } else {
2283                                                 $cats_qpart = $feed;
2284                                         }
2285
2286                                         $query_strategy_part = "ttrss_feeds.cat_id IN ($cats_qpart)";
2287
2288                                 } else {
2289                                         $query_strategy_part = "ttrss_feeds.cat_id IS NULL";
2290                                 }
2291
2292                         } else if ($feed > 0) {
2293
2294                                 if ($cat_view) {
2295
2296                                         if ($feed > 0) {
2297                                                 if ($include_children) {
2298                                                         # sub-cats
2299                                                         $subcats = getChildCategories($link, $feed, $owner_uid);
2300
2301                                                         array_push($subcats, $feed);
2302                                                         $query_strategy_part = "cat_id IN (".
2303                                                                         implode(",", $subcats).")";
2304
2305                                                 } else {
2306                                                         $query_strategy_part = "cat_id = '$feed'";
2307                                                 }
2308
2309                                         } else {
2310                                                 $query_strategy_part = "cat_id IS NULL";
2311                                         }
2312
2313                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2314
2315                                 } else {
2316                                         $query_strategy_part = "feed_id = '$feed'";
2317                                 }
2318                         } else if ($feed == 0 && !$cat_view) { // archive virtual feed
2319                                 $query_strategy_part = "feed_id IS NULL";
2320                                 $allow_archived = true;
2321                         } else if ($feed == 0 && $cat_view) { // uncategorized
2322                                 $query_strategy_part = "cat_id IS NULL AND feed_id IS NOT NULL";
2323                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2324                         } else if ($feed == -1) { // starred virtual feed
2325                                 $query_strategy_part = "marked = true";
2326                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2327                                 $allow_archived = true;
2328
2329                                 if (!$override_order) $override_order = "last_marked DESC, updated DESC";
2330
2331                         } else if ($feed == -2) { // published virtual feed OR labels category
2332
2333                                 if (!$cat_view) {
2334                                         $query_strategy_part = "published = true";
2335                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2336                                         $allow_archived = true;
2337
2338                                         if (!$override_order) $override_order = "last_published DESC, updated DESC";
2339                                 } else {
2340                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2341
2342                                         $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2343
2344                                         $query_strategy_part = "ttrss_labels2.id = ttrss_user_labels2.label_id AND
2345                                                 ttrss_user_labels2.article_id = ref_id";
2346
2347                                 }
2348                         } else if ($feed == -6) { // recently read
2349                                 $query_strategy_part = "unread = false AND last_read IS NOT NULL";
2350                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2351                                 $allow_archived = true;
2352
2353                                 if (!$override_order) $override_order = "last_read DESC";
2354                         } else if ($feed == -3) { // fresh virtual feed
2355                                 $query_strategy_part = "unread = true AND score >= 0";
2356
2357                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
2358
2359                                 if (DB_TYPE == "pgsql") {
2360                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
2361                                 } else {
2362                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
2363                                 }
2364
2365                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2366                         } else if ($feed == -4) { // all articles virtual feed
2367                                 $query_strategy_part = "true";
2368                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2369                         } else if ($feed <= -10) { // labels
2370                                 $label_id = -$feed - 11;
2371
2372                                 $query_strategy_part = "label_id = '$label_id' AND
2373                                         ttrss_labels2.id = ttrss_user_labels2.label_id AND
2374                                         ttrss_user_labels2.article_id = ref_id";
2375
2376                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2377                                 $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2378                                 $allow_archived = true;
2379
2380                         } else {
2381                                 $query_strategy_part = "true";
2382                         }
2383
2384                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
2385                                 $date_sort_field = "updated";
2386                         } else {
2387                                 $date_sort_field = "date_entered";
2388                         }
2389
2390                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
2391                                 $order_by = "$date_sort_field";
2392                         } else {
2393                                 $order_by = "$date_sort_field DESC";
2394                         }
2395
2396                         if ($view_mode != "noscores") {
2397                                 $order_by = "score DESC, $order_by";
2398                         }
2399
2400                         if ($override_order) {
2401                                 $order_by = $override_order;
2402                         }
2403
2404                         $feed_title = "";
2405
2406                         if ($search) {
2407                                 $feed_title = T_sprintf("Search results: %s", $search);
2408                         } else {
2409                                 if ($cat_view) {
2410                                         $feed_title = getCategoryTitle($link, $feed);
2411                                 } else {
2412                                         if (is_numeric($feed) && $feed > 0) {
2413                                                 $result = db_query($link, "SELECT title,site_url,last_error
2414                                                         FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = $owner_uid");
2415
2416                                                 $feed_title = db_fetch_result($result, 0, "title");
2417                                                 $feed_site_url = db_fetch_result($result, 0, "site_url");
2418                                                 $last_error = db_fetch_result($result, 0, "last_error");
2419                                         } else {
2420                                                 $feed_title = getFeedTitle($link, $feed);
2421                                         }
2422                                 }
2423                         }
2424
2425                         $content_query_part = "content as content_preview, cached_content, ";
2426
2427                         if (is_numeric($feed)) {
2428
2429                                 if ($feed >= 0) {
2430                                         $feed_kind = "Feeds";
2431                                 } else {
2432                                         $feed_kind = "Labels";
2433                                 }
2434
2435                                 if ($limit_query_part) {
2436                                         $offset_query_part = "OFFSET $offset";
2437                                 }
2438
2439                                 // proper override_order applied above
2440                                 if ($vfeed_query_part && !$ignore_vfeed_group && get_pref($link, 'VFEED_GROUP_BY_FEED', $owner_uid)) {
2441                                         if (!$override_order) {
2442                                                 $order_by = "ttrss_feeds.title, $order_by";
2443                                         } else {
2444                                                 $order_by = "ttrss_feeds.title, $override_order";
2445                                         }
2446                                 }
2447
2448                                 if (!$allow_archived) {
2449                                         $from_qpart = "ttrss_entries,ttrss_user_entries,ttrss_feeds$ext_tables_part";
2450                                         $feed_check_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
2451
2452                                 } else {
2453                                         $from_qpart = "ttrss_entries$ext_tables_part,ttrss_user_entries
2454                                                 LEFT JOIN ttrss_feeds ON (feed_id = ttrss_feeds.id)";
2455                                 }
2456
2457                                 $query = "SELECT DISTINCT
2458                                                 date_entered,
2459                                                 guid,
2460                                                 ttrss_entries.id,ttrss_entries.title,
2461                                                 updated,
2462                                                 label_cache,
2463                                                 tag_cache,
2464                                                 always_display_enclosures,
2465                                                 site_url,
2466                                                 note,
2467                                                 num_comments,
2468                                                 comments,
2469                                                 int_id,
2470                                                 hide_images,
2471                                                 unread,feed_id,marked,published,link,last_read,orig_feed_id,
2472                                                 last_marked, last_published,
2473                                                 ".SUBSTRING_FOR_DATE."(last_read,1,19) as last_read_noms,
2474                                                 $vfeed_query_part
2475                                                 $content_query_part
2476                                                 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated_noms,
2477                                                 author,score
2478                                         FROM
2479                                                 $from_qpart
2480                                         WHERE
2481                                         $feed_check_qpart
2482                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
2483                                         ttrss_user_entries.owner_uid = '$owner_uid' AND
2484                                         $search_query_part
2485                                         $filter_query_part
2486                                         $view_query_part
2487                                         $since_id_part
2488                                         $query_strategy_part ORDER BY $order_by
2489                                         $limit_query_part $offset_query_part";
2490
2491                                 if ($_REQUEST["debug"]) print $query;
2492
2493                                 $result = db_query($link, $query);
2494
2495                         } else {
2496                                 // browsing by tag
2497
2498                                 $select_qpart = "SELECT DISTINCT " .
2499                                                                 "date_entered," .
2500                                                                 "guid," .
2501                                                                 "note," .
2502                                                                 "ttrss_entries.id as id," .
2503                                                                 "title," .
2504                                                                 "updated," .
2505                                                                 "unread," .
2506                                                                 "feed_id," .
2507                                                                 "orig_feed_id," .
2508                                                                 "marked," .
2509                                                                 "num_comments, " .
2510                                                                 "comments, " .
2511                                                                 "tag_cache," .
2512                                                                 "label_cache," .
2513                                                                 "link," .
2514                                                                 "last_read," .
2515                                                                 "(SELECT hide_images FROM ttrss_feeds WHERE id = feed_id) AS hide_images," .
2516                                                                 "last_marked, last_published, " .
2517                                                                 SUBSTRING_FOR_DATE . "(last_read,1,19) as last_read_noms," .
2518                                                                 $since_id_part .
2519                                                                 $vfeed_query_part .
2520                                                                 $content_query_part .
2521                                                                 SUBSTRING_FOR_DATE . "(updated,1,19) as updated_noms," .
2522                                                                 "score ";
2523
2524                                 $feed_kind = "Tags";
2525                                 $all_tags = explode(",", $feed);
2526                                 if ($search_mode == 'any') {
2527                                         $tag_sql = "tag_name in (" . implode(", ", array_map("db_quote", $all_tags)) . ")";
2528                                         $from_qpart = " FROM ttrss_entries,ttrss_user_entries,ttrss_tags ";
2529                                         $where_qpart = " WHERE " .
2530                                                                    "ref_id = ttrss_entries.id AND " .
2531                                                                    "ttrss_user_entries.owner_uid = $owner_uid AND " .
2532                                                                    "post_int_id = int_id AND $tag_sql AND " .
2533                                                                    $view_query_part .
2534                                                                    $search_query_part .
2535                                                                    $query_strategy_part . " ORDER BY $order_by " .
2536                                                                    $limit_query_part;
2537
2538                                 } else {
2539                                         $i = 1;
2540                                         $sub_selects = array();
2541                                         $sub_ands = array();
2542                                         foreach ($all_tags as $term) {
2543                                                 array_push($sub_selects, "(SELECT post_int_id from ttrss_tags WHERE tag_name = " . db_quote($term) . " AND owner_uid = $owner_uid) as A$i");
2544                                                 $i++;
2545                                         }
2546                                         if ($i > 2) {
2547                                                 $x = 1;
2548                                                 $y = 2;
2549                                                 do {
2550                                                         array_push($sub_ands, "A$x.post_int_id = A$y.post_int_id");
2551                                                         $x++;
2552                                                         $y++;
2553                                                 } while ($y < $i);
2554                                         }
2555                                         array_push($sub_ands, "A1.post_int_id = ttrss_user_entries.int_id and ttrss_user_entries.owner_uid = $owner_uid");
2556                                         array_push($sub_ands, "ttrss_user_entries.ref_id = ttrss_entries.id");
2557                                         $from_qpart = " FROM " . implode(", ", $sub_selects) . ", ttrss_user_entries, ttrss_entries";
2558                                         $where_qpart = " WHERE " . implode(" AND ", $sub_ands);
2559                                 }
2560                                 //                              error_log("TAG SQL: " . $tag_sql);
2561                                 // $tag_sql = "tag_name = '$feed'";   DEFAULT way
2562
2563                                 //                              error_log("[". $select_qpart . "][" . $from_qpart . "][" .$where_qpart . "]");
2564                                 $result = db_query($link, $select_qpart . $from_qpart . $where_qpart);
2565                         }
2566
2567                         return array($result, $feed_title, $feed_site_url, $last_error);
2568
2569         }
2570
2571         function sanitize($link, $str, $force_remove_images = false, $owner = false, $site_url = false) {
2572                 if (!$owner) $owner = $_SESSION["uid"];
2573
2574                 $res = trim($str); if (!$res) return '';
2575
2576                 if (strpos($res, "href=") === false)
2577                         $res = rewrite_urls($res);
2578
2579                 $charset_hack = '<head>
2580                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
2581                 </head>';
2582
2583                 $res = trim($res); if (!$res) return '';
2584
2585                 libxml_use_internal_errors(true);
2586
2587                 $doc = new DOMDocument();
2588                 $doc->loadHTML($charset_hack . $res);
2589                 $xpath = new DOMXPath($doc);
2590
2591                 $entries = $xpath->query('(//a[@href]|//img[@src])');
2592
2593                 foreach ($entries as $entry) {
2594
2595                         if ($site_url) {
2596
2597                                 if ($entry->hasAttribute('href'))
2598                                         $entry->setAttribute('href',
2599                                                 rewrite_relative_url($site_url, $entry->getAttribute('href')));
2600
2601                                 if ($entry->hasAttribute('src')) {
2602                                         $src = rewrite_relative_url($site_url, $entry->getAttribute('src'));
2603
2604                                         $cached_filename = CACHE_DIR . '/images/' . sha1($src) . '.png';
2605
2606                                         if (file_exists($cached_filename)) {
2607                                                 $src = SELF_URL_PATH . '/image.php?hash=' . sha1($src);
2608                                         }
2609
2610                                         $entry->setAttribute('src', $src);
2611                                 }
2612
2613                                 if ($entry->nodeName == 'img') {
2614                                         if (($owner && get_pref($link, "STRIP_IMAGES", $owner)) ||
2615                                                         $force_remove_images) {
2616
2617                                                 $p = $doc->createElement('p');
2618
2619                                                 $a = $doc->createElement('a');
2620                                                 $a->setAttribute('href', $entry->getAttribute('src'));
2621
2622                                                 $a->appendChild(new DOMText($entry->getAttribute('src')));
2623                                                 $a->setAttribute('target', '_blank');
2624
2625                                                 $p->appendChild($a);
2626
2627                                                 $entry->parentNode->replaceChild($p, $entry);
2628                                         }
2629                                 }
2630                         }
2631
2632                         if (strtolower($entry->nodeName) == "a") {
2633                                 $entry->setAttribute("target", "_blank");
2634                         }
2635                 }
2636
2637                 $entries = $xpath->query('//iframe');
2638                 foreach ($entries as $entry) {
2639                         $entry->setAttribute('sandbox', 'allow-scripts');
2640
2641                 }
2642
2643                 global $pluginhost;
2644
2645                 if (isset($pluginhost)) {
2646                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_SANITIZE) as $plugin) {
2647                                 $doc = $plugin->hook_sanitize($doc, $site_url);
2648                         }
2649                 }
2650
2651                 $doc->removeChild($doc->firstChild); //remove doctype
2652                 $doc = strip_harmful_tags($doc);
2653                 $res = $doc->saveHTML();
2654                 return $res;
2655         }
2656
2657         function strip_harmful_tags($doc) {
2658                 $entries = $doc->getElementsByTagName("*");
2659
2660                 $allowed_elements = array('a', 'address', 'audio', 'article',
2661                         'b', 'big', 'blockquote', 'body', 'br', 'cite',
2662                         'code', 'dd', 'del', 'details', 'div', 'dl', 'font',
2663                         'dt', 'em', 'footer', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6',
2664                         'header', 'html', 'i', 'img', 'ins', 'kbd',
2665                         'li', 'nav', 'ol', 'p', 'pre', 'q', 's','small',
2666                         'source', 'span', 'strike', 'strong', 'sub', 'summary',
2667                         'sup', 'table', 'tbody', 'td', 'tfoot', 'th', 'thead',
2668                         'tr', 'track', 'tt', 'u', 'ul', 'var', 'wbr', 'video' );
2669
2670                 if ($_SESSION['hasSandbox']) array_push($allowed_elements, 'iframe');
2671
2672                 $disallowed_attributes = array('id', 'style', 'class');
2673
2674                 foreach ($entries as $entry) {
2675                         if (!in_array($entry->nodeName, $allowed_elements)) {
2676                                 $entry->parentNode->removeChild($entry);
2677                         }
2678
2679                         if ($entry->hasAttributes()) {
2680                                 foreach (iterator_to_array($entry->attributes) as $attr) {
2681
2682                                         if (strpos($attr->nodeName, 'on') === 0) {
2683                                                 $entry->removeAttributeNode($attr);
2684                                         }
2685
2686                                         if (in_array($attr->nodeName, $disallowed_attributes)) {
2687                                                 $entry->removeAttributeNode($attr);
2688                                         }
2689                                 }
2690                         }
2691                 }
2692
2693                 return $doc;
2694         }
2695
2696         function check_for_update($link) {
2697                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2698                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION .
2699                                 "&iid=" . sha1(SELF_URL_PATH);
2700
2701                         $version_data = @fetch_file_contents($version_url);
2702
2703                         if ($version_data) {
2704                                 $version_data = json_decode($version_data, true);
2705                                 if ($version_data && $version_data['version']) {
2706
2707                                         if (version_compare(VERSION, $version_data['version']) == -1) {
2708                                                 return $version_data;
2709                                         }
2710                                 }
2711                         }
2712                 }
2713                 return false;
2714         }
2715
2716         function catchupArticlesById($link, $ids, $cmode, $owner_uid = false) {
2717
2718                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2719                 if (count($ids) == 0) return;
2720
2721                 $tmp_ids = array();
2722
2723                 foreach ($ids as $id) {
2724                         array_push($tmp_ids, "ref_id = '$id'");
2725                 }
2726
2727                 $ids_qpart = join(" OR ", $tmp_ids);
2728
2729                 if ($cmode == 0) {
2730                         db_query($link, "UPDATE ttrss_user_entries SET
2731                         unread = false,last_read = NOW()
2732                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2733                 } else if ($cmode == 1) {
2734                         db_query($link, "UPDATE ttrss_user_entries SET
2735                         unread = true
2736                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2737                 } else {
2738                         db_query($link, "UPDATE ttrss_user_entries SET
2739                         unread = NOT unread,last_read = NOW()
2740                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2741                 }
2742
2743                 /* update ccache */
2744
2745                 $result = db_query($link, "SELECT DISTINCT feed_id FROM ttrss_user_entries
2746                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2747
2748                 while ($line = db_fetch_assoc($result)) {
2749                         ccache_update($link, $line["feed_id"], $owner_uid);
2750                 }
2751         }
2752
2753         function get_article_tags($link, $id, $owner_uid = 0, $tag_cache = false) {
2754
2755                 $a_id = db_escape_string($id);
2756
2757                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2758
2759                 $query = "SELECT DISTINCT tag_name,
2760                         owner_uid as owner FROM
2761                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
2762                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
2763
2764                 $obj_id = md5("TAGS:$owner_uid:$id");
2765                 $tags = array();
2766
2767                 /* check cache first */
2768
2769                 if ($tag_cache === false) {
2770                         $result = db_query($link, "SELECT tag_cache FROM ttrss_user_entries
2771                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2772
2773                         $tag_cache = db_fetch_result($result, 0, "tag_cache");
2774                 }
2775
2776                 if ($tag_cache) {
2777                         $tags = explode(",", $tag_cache);
2778                 } else {
2779
2780                         /* do it the hard way */
2781
2782                         $tmp_result = db_query($link, $query);
2783
2784                         while ($tmp_line = db_fetch_assoc($tmp_result)) {
2785                                 array_push($tags, $tmp_line["tag_name"]);
2786                         }
2787
2788                         /* update the cache */
2789
2790                         $tags_str = db_escape_string(join(",", $tags));
2791
2792                         db_query($link, "UPDATE ttrss_user_entries
2793                                 SET tag_cache = '$tags_str' WHERE ref_id = '$id'
2794                                 AND owner_uid = $owner_uid");
2795                 }
2796
2797                 return $tags;
2798         }
2799
2800         function trim_array($array) {
2801                 $tmp = $array;
2802                 array_walk($tmp, 'trim');
2803                 return $tmp;
2804         }
2805
2806         function tag_is_valid($tag) {
2807                 if ($tag == '') return false;
2808                 if (preg_match("/^[0-9]*$/", $tag)) return false;
2809                 if (mb_strlen($tag) > 250) return false;
2810
2811                 if (function_exists('iconv')) {
2812                         $tag = iconv("utf-8", "utf-8", $tag);
2813                 }
2814
2815                 if (!$tag) return false;
2816
2817                 return true;
2818         }
2819
2820         function render_login_form($link, $form_id = 0) {
2821                 switch ($form_id) {
2822                 case 0:
2823                         require_once "login_form.php";
2824                         break;
2825                 case 1:
2826                         require_once "mobile/login_form.php";
2827                         break;
2828                 }
2829                 exit;
2830         }
2831
2832         // from http://developer.apple.com/internet/safari/faq.html
2833         function no_cache_incantation() {
2834                 header("Expires: Mon, 22 Dec 1980 00:00:00 GMT"); // Happy birthday to me :)
2835                 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
2836                 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); // HTTP/1.1
2837                 header("Cache-Control: post-check=0, pre-check=0", false);
2838                 header("Pragma: no-cache"); // HTTP/1.0
2839         }
2840
2841         function format_warning($msg, $id = "") {
2842                 global $link;
2843                 return "<div class=\"warning\" id=\"$id\">
2844                         <img src=\"images/sign_excl.svg\">$msg</div>";
2845         }
2846
2847         function format_notice($msg, $id = "") {
2848                 global $link;
2849                 return "<div class=\"notice\" id=\"$id\">
2850                         <img src=\"images/sign_info.svg\">$msg</div>";
2851         }
2852
2853         function format_error($msg, $id = "") {
2854                 global $link;
2855                 return "<div class=\"error\" id=\"$id\">
2856                         <img src=\"images/sign_excl.svg\">$msg</div>";
2857         }
2858
2859         function print_notice($msg) {
2860                 return print format_notice($msg);
2861         }
2862
2863         function print_warning($msg) {
2864                 return print format_warning($msg);
2865         }
2866
2867         function print_error($msg) {
2868                 return print format_error($msg);
2869         }
2870
2871
2872         function T_sprintf() {
2873                 $args = func_get_args();
2874                 return vsprintf(__(array_shift($args)), $args);
2875         }
2876
2877         function format_inline_player($link, $url, $ctype) {
2878
2879                 $entry = "";
2880
2881                 $url = htmlspecialchars($url);
2882
2883                 if (strpos($ctype, "audio/") === 0) {
2884
2885                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
2886                                 strpos($_SERVER['HTTP_USER_AGENT'], "Chrome") !== false ||
2887                                 strpos($_SERVER['HTTP_USER_AGENT'], "Safari") !== false )) {
2888
2889                                 $id = 'AUDIO-' . uniqid();
2890
2891                                 $entry .= "<audio id=\"$id\"\" controls style='display : none'>
2892                                         <source type=\"$ctype\" src=\"$url\"></source>
2893                                         </audio>";
2894
2895                                 $entry .= "<span onclick=\"player(this)\"
2896                                         title=\"".__("Click to play")."\" status=\"0\"
2897                                         class=\"player\" audio-id=\"$id\">".__("Play")."</span>";
2898
2899                         } else {
2900
2901                                 $entry .= "<object type=\"application/x-shockwave-flash\"
2902                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
2903                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
2904                                         <param name=\"movie\"
2905                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
2906                                         </object>";
2907                         }
2908
2909                         if ($entry) $entry .= "&nbsp; <a target=\"_blank\"
2910                                 href=\"$url\">" . basename($url) . "</a>";
2911
2912                         return $entry;
2913
2914                 }
2915
2916                 return "";
2917
2918 /*              $filename = substr($url, strrpos($url, "/")+1);
2919
2920                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
2921                         $filename . " (" . $ctype . ")" . "</a>"; */
2922
2923         }
2924
2925         function format_article($link, $id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
2926                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2927
2928                 $rv = array();
2929
2930                 $rv['id'] = $id;
2931
2932                 /* we can figure out feed_id from article id anyway, why do we
2933                  * pass feed_id here? let's ignore the argument :( */
2934
2935                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
2936                         WHERE ref_id = '$id'");
2937
2938                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
2939
2940                 $rv['feed_id'] = $feed_id;
2941
2942                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
2943
2944                 if ($mark_as_read) {
2945                         $result = db_query($link, "UPDATE ttrss_user_entries
2946                                 SET unread = false,last_read = NOW()
2947                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2948
2949                         ccache_update($link, $feed_id, $owner_uid);
2950                 }
2951
2952                 $result = db_query($link, "SELECT id,title,link,content,feed_id,comments,int_id,
2953                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
2954                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
2955                         (SELECT hide_images FROM ttrss_feeds WHERE id = feed_id) as hide_images,
2956                         num_comments,
2957                         tag_cache,
2958                         author,
2959                         orig_feed_id,
2960                         note,
2961                         cached_content
2962                         FROM ttrss_entries,ttrss_user_entries
2963                         WHERE   id = '$id' AND ref_id = id AND owner_uid = $owner_uid");
2964
2965                 if ($result) {
2966
2967                         $line = db_fetch_assoc($result);
2968
2969                         $tag_cache = $line["tag_cache"];
2970
2971                         $line["tags"] = get_article_tags($link, $id, $owner_uid, $line["tag_cache"]);
2972                         unset($line["tag_cache"]);
2973
2974                         $line["content"] = sanitize($link, $line["content"], false, $owner_uid, $line["site_url"]);
2975
2976                         global $pluginhost;
2977
2978                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_RENDER_ARTICLE) as $p) {
2979                                 $line = $p->hook_render_article($line);
2980                         }
2981
2982                         $num_comments = $line["num_comments"];
2983                         $entry_comments = "";
2984
2985                         if ($num_comments > 0) {
2986                                 if ($line["comments"]) {
2987                                         $comments_url = htmlspecialchars($line["comments"]);
2988                                 } else {
2989                                         $comments_url = htmlspecialchars($line["link"]);
2990                                 }
2991                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
2992                         } else {
2993                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
2994                                         $entry_comments = "<a target='_blank' href=\"".htmlspecialchars($line["comments"])."\">comments</a>";
2995                                 }
2996                         }
2997
2998                         if ($zoom_mode) {
2999                                 header("Content-Type: text/html");
3000                                 $rv['content'] .= "<html><head>
3001                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
3002                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
3003                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
3004                                         </head><body>";
3005                         }
3006
3007                         $title_escaped = htmlspecialchars($line['title']);
3008
3009                         $rv['content'] .= "<div id=\"PTITLE-FULL-$id\" style=\"display : none\">" .
3010                                 strip_tags($line['title']) . "</div>";
3011
3012                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
3013
3014                         $rv['content'] .= "<div class=\"postHeader\" id=\"POSTHDR-$id\">";
3015
3016                         $entry_author = $line["author"];
3017
3018                         if ($entry_author) {
3019                                 $entry_author = __(" - ") . $entry_author;
3020                         }
3021
3022                         $parsed_updated = make_local_datetime($link, $line["updated"], true,
3023                                 $owner_uid, true);
3024
3025                         $rv['content'] .= "<div class=\"postDate\">$parsed_updated</div>";
3026
3027                         if ($line["link"]) {
3028                                 $rv['content'] .= "<div class='postTitle'><a target='_blank'
3029                                         title=\"".htmlspecialchars($line['title'])."\"
3030                                         href=\"" .
3031                                         htmlspecialchars($line["link"]) . "\">" .
3032                                         $line["title"] .
3033                                         "<span class='author'>$entry_author</span></a></div>";
3034                         } else {
3035                                 $rv['content'] .= "<div class='postTitle'>" . $line["title"] . "$entry_author</div>";
3036                         }
3037
3038                         $tags_str = format_tags_string($line["tags"], $id);
3039                         $tags_str_full = join(", ", $line["tags"]);
3040
3041                         if (!$tags_str_full) $tags_str_full = __("no tags");
3042
3043                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
3044
3045                         $rv['content'] .= "<div class='postTags' style='float : right'>
3046                                 <img src='images/tag.png'
3047                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
3048
3049                         if (!$zoom_mode) {
3050                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
3051                                         <a title=\"".__('Edit tags for this article')."\"
3052                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
3053
3054                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
3055                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
3056                                         position=\"below\">$tags_str_full</div>";
3057
3058                                 global $pluginhost;
3059
3060                                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_ARTICLE_BUTTON) as $p) {
3061                                         $rv['content'] .= $p->hook_article_button($line);
3062                                 }
3063
3064
3065                         } else {
3066                                 $tags_str = strip_tags($tags_str);
3067                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
3068                         }
3069                         $rv['content'] .= "</div>";
3070                         $rv['content'] .= "<div clear='both'>$entry_comments</div>";
3071
3072                         if ($line["orig_feed_id"]) {
3073
3074                                 $tmp_result = db_query($link, "SELECT * FROM ttrss_archived_feeds
3075                                         WHERE id = ".$line["orig_feed_id"]);
3076
3077                                 if (db_num_rows($tmp_result) != 0) {
3078
3079                                         $rv['content'] .= "<div clear='both'>";
3080                                         $rv['content'] .= __("Originally from:");
3081
3082                                         $rv['content'] .= "&nbsp;";
3083
3084                                         $tmp_line = db_fetch_assoc($tmp_result);
3085
3086                                         $rv['content'] .= "<a target='_blank'
3087                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
3088                                                 $tmp_line['title'] . "</a>";
3089
3090                                         $rv['content'] .= "&nbsp;";
3091
3092                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3093                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.svg'></a>";
3094
3095                                         $rv['content'] .= "</div>";
3096                                 }
3097                         }
3098
3099                         $rv['content'] .= "</div>";
3100
3101                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3102                                 if ($line['note']) {
3103                                         $rv['content'] .= format_article_note($id, $line['note'], !$zoom_mode);
3104                                 }
3105                         $rv['content'] .= "</div>";
3106
3107                         $rv['content'] .= "<div class=\"postContent\">";
3108
3109                         // N-grams
3110
3111                         if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_RELATED_THRESHOLD')) {
3112
3113                                 $ngram_result = db_query($link, "SELECT id,title FROM
3114                                                 ttrss_entries,ttrss_user_entries
3115                                         WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
3116                                                 AND similarity(title, '$title_escaped') >= "._NGRAM_TITLE_RELATED_THRESHOLD."
3117                                                 AND title != '$title_escaped'
3118                                                 AND owner_uid = $owner_uid");
3119
3120                                 if (db_num_rows($ngram_result) > 0) {
3121                                         $rv['content'] .= "<div dojoType=\"dijit.form.DropDownButton\">".
3122                                                 "<span>" . __('Related')."</span>";
3123                                         $rv['content'] .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3124
3125                                         while ($nline = db_fetch_assoc($ngram_result)) {
3126                                                 $rv['content'] .= "<div onclick=\"hlOpenInNewTab(null,".$nline['id'].")\"
3127                                                         dojoType=\"dijit.MenuItem\">".$nline['title']."</div>";
3128
3129                                         }
3130                                         $rv['content'] .= "</div></div><br/";
3131                                 }
3132                         }
3133
3134                         $rv['content'] .= $line["content"];
3135
3136                         $rv['content'] .= format_article_enclosures($link, $id,
3137                                 $always_display_enclosures, $line["content"], $line["hide_images"]);
3138
3139                         $rv['content'] .= "</div>";
3140
3141                         $rv['content'] .= "</div>";
3142
3143                 }
3144
3145                 if ($zoom_mode) {
3146                         $rv['content'] .= "
3147                                 <div style=\"text-align : center\">
3148                                 <button onclick=\"return window.close()\">".
3149                                         __("Close this window")."</button></div>";
3150                         $rv['content'] .= "</body></html>";
3151                 }
3152
3153                 return $rv;
3154
3155         }
3156
3157         function print_checkpoint($n, $s) {
3158                 $ts = microtime(true);
3159                 echo sprintf("<!-- CP[$n] %.4f seconds -->", $ts - $s);
3160                 return $ts;
3161         }
3162
3163         function sanitize_tag($tag) {
3164                 $tag = trim($tag);
3165
3166                 $tag = mb_strtolower($tag, 'utf-8');
3167
3168                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3169
3170 //              $tag = str_replace('"', "", $tag);
3171 //              $tag = str_replace("+", " ", $tag);
3172                 $tag = str_replace("technorati tag: ", "", $tag);
3173
3174                 return $tag;
3175         }
3176
3177         function get_self_url_prefix() {
3178                 if (strrpos(SELF_URL_PATH, "/") === strlen(SELF_URL_PATH)-1) {
3179                         return substr(SELF_URL_PATH, 0, strlen(SELF_URL_PATH)-1);
3180                 } else {
3181                         return SELF_URL_PATH;
3182                 }
3183         }
3184
3185         /**
3186          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3187          *
3188          * @return string The Mozilla Firefox feed adding URL.
3189          */
3190         function add_feed_url() {
3191                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3192
3193                 $url_path = get_self_url_prefix() .
3194                         "/public.php?op=subscribe&feed_url=%s";
3195                 return $url_path;
3196         } // function add_feed_url
3197
3198         function encrypt_password($pass, $salt = '', $mode2 = false) {
3199                 if ($salt && $mode2) {
3200                         return "MODE2:" . hash('sha256', $salt . $pass);
3201                 } else if ($salt) {
3202                         return "SHA1X:" . sha1("$salt:$pass");
3203                 } else {
3204                         return "SHA1:" . sha1($pass);
3205                 }
3206         } // function encrypt_password
3207
3208         function load_filters($link, $feed_id, $owner_uid, $action_id = false) {
3209                 $filters = array();
3210
3211                 $cat_id = (int)getFeedCategory($link, $feed_id);
3212
3213                 $result = db_query($link, "SELECT * FROM ttrss_filters2 WHERE
3214                         owner_uid = $owner_uid AND enabled = true");
3215
3216                 $check_cats = join(",", array_merge(
3217                         getParentCategories($link, $cat_id, $owner_uid),
3218                         array($cat_id)));
3219
3220                 while ($line = db_fetch_assoc($result)) {
3221                         $filter_id = $line["id"];
3222
3223                         $result2 = db_query($link, "SELECT
3224                                 r.reg_exp, r.feed_id, r.cat_id, r.cat_filter, t.name AS type_name
3225                                 FROM ttrss_filters2_rules AS r,
3226                                 ttrss_filter_types AS t
3227                                 WHERE
3228                                         (cat_id IS NULL OR cat_id IN ($check_cats)) AND
3229                                         (feed_id IS NULL OR feed_id = '$feed_id') AND
3230                                         filter_type = t.id AND filter_id = '$filter_id'");
3231
3232                         $rules = array();
3233                         $actions = array();
3234
3235                         while ($rule_line = db_fetch_assoc($result2)) {
3236 #                               print_r($rule_line);
3237
3238                                 $rule = array();
3239                                 $rule["reg_exp"] = $rule_line["reg_exp"];
3240                                 $rule["type"] = $rule_line["type_name"];
3241
3242                                 array_push($rules, $rule);
3243                         }
3244
3245                         $result2 = db_query($link, "SELECT a.action_param,t.name AS type_name
3246                                 FROM ttrss_filters2_actions AS a,
3247                                 ttrss_filter_actions AS t
3248                                 WHERE
3249                                         action_id = t.id AND filter_id = '$filter_id'");
3250
3251                         while ($action_line = db_fetch_assoc($result2)) {
3252 #                               print_r($action_line);
3253
3254                                 $action = array();
3255                                 $action["type"] = $action_line["type_name"];
3256                                 $action["param"] = $action_line["action_param"];
3257
3258                                 array_push($actions, $action);
3259                         }
3260
3261
3262                         $filter = array();
3263                         $filter["match_any_rule"] = sql_bool_to_bool($line["match_any_rule"]);
3264                         $filter["rules"] = $rules;
3265                         $filter["actions"] = $actions;
3266
3267                         if (count($rules) > 0 && count($actions) > 0) {
3268                                 array_push($filters, $filter);
3269                         }
3270                 }
3271
3272                 return $filters;
3273         }
3274
3275         function get_score_pic($score) {
3276                 if ($score > 100) {
3277                         return "score_high.png";
3278                 } else if ($score > 0) {
3279                         return "score_half_high.png";
3280                 } else if ($score < -100) {
3281                         return "score_low.png";
3282                 } else if ($score < 0) {
3283                         return "score_half_low.png";
3284                 } else {
3285                         return "score_neutral.png";
3286                 }
3287         }
3288
3289         function feed_has_icon($id) {
3290                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3291         }
3292
3293         function init_connection($link) {
3294                 if ($link) {
3295
3296                         if (DB_TYPE == "pgsql") {
3297                                 pg_query($link, "set client_encoding = 'UTF-8'");
3298                                 pg_set_client_encoding("UNICODE");
3299                                 pg_query($link, "set datestyle = 'ISO, european'");
3300                                 pg_query($link, "set TIME ZONE 0");
3301                         } else {
3302                                 db_query($link, "SET time_zone = '+0:0'");
3303
3304                                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
3305                                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
3306                                 }
3307                         }
3308
3309                         global $pluginhost;
3310
3311                         $pluginhost = new PluginHost($link);
3312                         $pluginhost->load(PLUGINS, $pluginhost::KIND_ALL);
3313
3314                         return true;
3315                 } else {
3316                         print "Unable to connect to database:" . db_last_error();
3317                         return false;
3318                 }
3319         }
3320
3321         function format_tags_string($tags, $id) {
3322
3323                 $tags_str = "";
3324                 $tags_nolinks_str = "";
3325
3326                 $num_tags = 0;
3327
3328                 $tag_limit = 6;
3329
3330                 $formatted_tags = array();
3331
3332                 foreach ($tags as $tag) {
3333                         $num_tags++;
3334                         $tag_escaped = str_replace("'", "\\'", $tag);
3335
3336                         if (mb_strlen($tag) > 30) {
3337                                 $tag = truncate_string($tag, 30);
3338                         }
3339
3340                         $tag_str = "<a href=\"javascript:viewfeed('$tag_escaped')\">$tag</a>";
3341
3342                         array_push($formatted_tags, $tag_str);
3343
3344                         $tmp_tags_str = implode(", ", $formatted_tags);
3345
3346                         if ($num_tags == $tag_limit || mb_strlen($tmp_tags_str) > 150) {
3347                                 break;
3348                         }
3349                 }
3350
3351                 $tags_str = implode(", ", $formatted_tags);
3352
3353                 if ($num_tags < count($tags)) {
3354                         $tags_str .= ", &hellip;";
3355                 }
3356
3357                 if ($num_tags == 0) {
3358                         $tags_str = __("no tags");
3359                 }
3360
3361                 return $tags_str;
3362
3363         }
3364
3365         function format_article_labels($labels, $id) {
3366
3367                 $labels_str = "";
3368
3369                 foreach ($labels as $l) {
3370                         $labels_str .= sprintf("<span class='hlLabelRef'
3371                                 style='color : %s; background-color : %s'>%s</span>",
3372                                         $l[2], $l[3], $l[1]);
3373                         }
3374
3375                 return $labels_str;
3376
3377         }
3378
3379         function format_article_note($id, $note, $allow_edit = true) {
3380
3381                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
3382                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
3383                         ($allow_edit ? __('(edit note)') : "")."</div>$note</div>";
3384
3385                 return $str;
3386         }
3387
3388
3389         function get_feed_category($link, $feed_cat, $parent_cat_id = false) {
3390                 if ($parent_cat_id) {
3391                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3392                         $parent_insert = "'$parent_cat_id'";
3393                 } else {
3394                         $parent_qpart = "parent_cat IS NULL";
3395                         $parent_insert = "NULL";
3396                 }
3397
3398                 $result = db_query($link,
3399                         "SELECT id FROM ttrss_feed_categories
3400                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3401
3402                 if (db_num_rows($result) == 0) {
3403                         return false;
3404                 } else {
3405                         return db_fetch_result($result, 0, "id");
3406                 }
3407         }
3408
3409         function add_feed_category($link, $feed_cat, $parent_cat_id = false) {
3410
3411                 if (!$feed_cat) return false;
3412
3413                 db_query($link, "BEGIN");
3414
3415                 if ($parent_cat_id) {
3416                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3417                         $parent_insert = "'$parent_cat_id'";
3418                 } else {
3419                         $parent_qpart = "parent_cat IS NULL";
3420                         $parent_insert = "NULL";
3421                 }
3422
3423                 $result = db_query($link,
3424                         "SELECT id FROM ttrss_feed_categories
3425                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3426
3427                 if (db_num_rows($result) == 0) {
3428
3429                         $result = db_query($link,
3430                                 "INSERT INTO ttrss_feed_categories (owner_uid,title,parent_cat)
3431                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat', $parent_insert)");
3432
3433                         db_query($link, "COMMIT");
3434
3435                         return true;
3436                 }
3437
3438                 return false;
3439         }
3440
3441         function getArticleFeed($link, $id) {
3442                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3443                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3444
3445                 if (db_num_rows($result) != 0) {
3446                         return db_fetch_result($result, 0, "feed_id");
3447                 } else {
3448                         return 0;
3449                 }
3450         }
3451
3452         /**
3453          * Fixes incomplete URLs by prepending "http://".
3454          * Also replaces feed:// with http://, and
3455          * prepends a trailing slash if the url is a domain name only.
3456          *
3457          * @param string $url Possibly incomplete URL
3458          *
3459          * @return string Fixed URL.
3460          */
3461         function fix_url($url) {
3462                 if (strpos($url, '://') === false) {
3463                         $url = 'http://' . $url;
3464                 } else if (substr($url, 0, 5) == 'feed:') {
3465                         $url = 'http:' . substr($url, 5);
3466                 }
3467
3468                 //prepend slash if the URL has no slash in it
3469                 // "http://www.example" -> "http://www.example/"
3470                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
3471                         $url .= '/';
3472                 }
3473
3474                 if ($url != "http:///")
3475                         return $url;
3476                 else
3477                         return '';
3478         }
3479
3480         function validate_feed_url($url) {
3481                 $parts = parse_url($url);
3482
3483                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
3484
3485         }
3486
3487         function get_article_enclosures($link, $id) {
3488
3489                 $query = "SELECT * FROM ttrss_enclosures
3490                         WHERE post_id = '$id' AND content_url != ''";
3491
3492                 $rv = array();
3493
3494                 $result = db_query($link, $query);
3495
3496                 if (db_num_rows($result) > 0) {
3497                         while ($line = db_fetch_assoc($result)) {
3498                                 array_push($rv, $line);
3499                         }
3500                 }
3501
3502                 return $rv;
3503         }
3504
3505         function save_email_address($link, $email) {
3506                 // FIXME: implement persistent storage of emails
3507
3508                 if (!$_SESSION['stored_emails'])
3509                         $_SESSION['stored_emails'] = array();
3510
3511                 if (!in_array($email, $_SESSION['stored_emails']))
3512                         array_push($_SESSION['stored_emails'], $email);
3513         }
3514
3515
3516         function get_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
3517
3518                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3519
3520                 $sql_is_cat = bool_to_sql_bool($is_cat);
3521
3522                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
3523                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
3524                         AND owner_uid = " . $owner_uid);
3525
3526                 if (db_num_rows($result) == 1) {
3527                         return db_fetch_result($result, 0, "access_key");
3528                 } else {
3529                         $key = db_escape_string(sha1(uniqid(rand(), true)));
3530
3531                         $result = db_query($link, "INSERT INTO ttrss_access_keys
3532                                 (access_key, feed_id, is_cat, owner_uid)
3533                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
3534
3535                         return $key;
3536                 }
3537                 return false;
3538         }
3539
3540         function get_feeds_from_html($url, $content)
3541         {
3542                 $url     = fix_url($url);
3543                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
3544
3545                 libxml_use_internal_errors(true);
3546
3547                 $doc = new DOMDocument();
3548                 $doc->loadHTML($content);
3549                 $xpath = new DOMXPath($doc);
3550                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
3551                 $feedUrls = array();
3552                 foreach ($entries as $entry) {
3553                         if ($entry->hasAttribute('href')) {
3554                                 $title = $entry->getAttribute('title');
3555                                 if ($title == '') {
3556                                         $title = $entry->getAttribute('type');
3557                                 }
3558                                 $feedUrl = rewrite_relative_url(
3559                                         $baseUrl, $entry->getAttribute('href')
3560                                 );
3561                                 $feedUrls[$feedUrl] = $title;
3562                         }
3563                 }
3564                 return $feedUrls;
3565         }
3566
3567         function is_html($content) {
3568                 return preg_match("/<html|DOCTYPE html/i", substr($content, 0, 20)) !== 0;
3569         }
3570
3571         function url_is_html($url, $login = false, $pass = false) {
3572                 return is_html(fetch_file_contents($url, false, $login, $pass));
3573         }
3574
3575         function print_label_select($link, $name, $value, $attributes = "") {
3576
3577                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
3578                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
3579
3580                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
3581                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
3582
3583                 while ($line = db_fetch_assoc($result)) {
3584
3585                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
3586
3587                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
3588                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
3589
3590                 }
3591
3592 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
3593
3594                 print "</select>";
3595
3596
3597         }
3598
3599         function format_article_enclosures($link, $id, $always_display_enclosures,
3600                                         $article_content, $hide_images = false) {
3601
3602                 $result = get_article_enclosures($link, $id);
3603                 $rv = '';
3604
3605                 if (count($result) > 0) {
3606
3607                         $entries_html = array();
3608                         $entries = array();
3609                         $entries_inline = array();
3610
3611                         foreach ($result as $line) {
3612
3613                                 $url = $line["content_url"];
3614                                 $ctype = $line["content_type"];
3615
3616                                 if (!$ctype) $ctype = __("unknown type");
3617
3618                                 $filename = substr($url, strrpos($url, "/")+1);
3619
3620                                 $player = format_inline_player($link, $url, $ctype);
3621
3622                                 if ($player) array_push($entries_inline, $player);
3623
3624 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3625 #                                       $filename . " (" . $ctype . ")" . "</a>";
3626
3627                                 $entry = "<div onclick=\"window.open('".htmlspecialchars($url)."')\"
3628                                         dojoType=\"dijit.MenuItem\">$filename ($ctype)</div>";
3629
3630                                 array_push($entries_html, $entry);
3631
3632                                 $entry = array();
3633
3634                                 $entry["type"] = $ctype;
3635                                 $entry["filename"] = $filename;
3636                                 $entry["url"] = $url;
3637
3638                                 array_push($entries, $entry);
3639                         }
3640
3641                         if ($_SESSION['uid'] && !get_pref($link, "STRIP_IMAGES")) {
3642                                 if ($always_display_enclosures ||
3643                                                         !preg_match("/<img/i", $article_content)) {
3644
3645                                         foreach ($entries as $entry) {
3646
3647                                                 if (preg_match("/image/", $entry["type"]) ||
3648                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
3649
3650                                                                 if (!$hide_images) {
3651                                                                         $rv .= "<p><img
3652                                                                         alt=\"".htmlspecialchars($entry["filename"])."\"
3653                                                                         src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
3654                                                                 } else {
3655                                                                         $rv .= "<p><a target=\"_blank\"
3656                                                                         href=\"".htmlspecialchars($entry["url"])."\"
3657                                                                         >" .htmlspecialchars($entry["url"]) . "</a></p>";
3658
3659                                                                 }
3660                                                 }
3661                                         }
3662                                 }
3663                         }
3664
3665                         if (count($entries_inline) > 0) {
3666                                 $rv .= "<hr clear='both'/>";
3667                                 foreach ($entries_inline as $entry) { $rv .= $entry; };
3668                                 $rv .= "<hr clear='both'/>";
3669                         }
3670
3671                         $rv .= "<br/><div dojoType=\"dijit.form.DropDownButton\">".
3672                                 "<span>" . __('Attachments')."</span>";
3673                         $rv .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3674
3675                         foreach ($entries_html as $entry) { $rv .= $entry; };
3676
3677                         $rv .= "</div></div>";
3678                 }
3679
3680                 return $rv;
3681         }
3682
3683         function getLastArticleId($link) {
3684                 $result = db_query($link, "SELECT MAX(ref_id) AS id FROM ttrss_user_entries
3685                         WHERE owner_uid = " . $_SESSION["uid"]);
3686
3687                 if (db_num_rows($result) == 1) {
3688                         return db_fetch_result($result, 0, "id");
3689                 } else {
3690                         return -1;
3691                 }
3692         }
3693
3694         function build_url($parts) {
3695                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
3696         }
3697
3698         /**
3699          * Converts a (possibly) relative URL to a absolute one.
3700          *
3701          * @param string $url     Base URL (i.e. from where the document is)
3702          * @param string $rel_url Possibly relative URL in the document
3703          *
3704          * @return string Absolute URL
3705          */
3706         function rewrite_relative_url($url, $rel_url) {
3707                 if (strpos($rel_url, "magnet:") === 0) {
3708                         return $rel_url;
3709                 } else if (strpos($rel_url, "://") !== false) {
3710                         return $rel_url;
3711                 } else if (strpos($rel_url, "//") === 0) {
3712                         # protocol-relative URL (rare but they exist)
3713                         return $rel_url;
3714                 } else if (strpos($rel_url, "/") === 0)
3715                 {
3716                         $parts = parse_url($url);
3717                         $parts['path'] = $rel_url;
3718
3719                         return build_url($parts);
3720
3721                 } else {
3722                         $parts = parse_url($url);
3723                         if (!isset($parts['path'])) {
3724                                 $parts['path'] = '/';
3725                         }
3726                         $dir = $parts['path'];
3727                         if (substr($dir, -1) !== '/') {
3728                                 $dir = dirname($parts['path']);
3729                                 $dir !== '/' && $dir .= '/';
3730                         }
3731                         $parts['path'] = $dir . $rel_url;
3732
3733                         return build_url($parts);
3734                 }
3735         }
3736
3737         function sphinx_search($query, $offset = 0, $limit = 30) {
3738                 require_once 'lib/sphinxapi.php';
3739
3740                 $sphinxClient = new SphinxClient();
3741
3742                 $sphinxClient->SetServer('localhost', 9312);
3743                 $sphinxClient->SetConnectTimeout(1);
3744
3745                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
3746                         'feed_title' => 20));
3747
3748                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
3749                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
3750                 $sphinxClient->SetLimits($offset, $limit, 1000);
3751                 $sphinxClient->SetArrayResult(false);
3752                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
3753
3754                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
3755
3756                 $ids = array();
3757
3758                 if (is_array($result['matches'])) {
3759                         foreach (array_keys($result['matches']) as $int_id) {
3760                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
3761                                 array_push($ids, $ref_id);
3762                         }
3763                 }
3764
3765                 return $ids;
3766         }
3767
3768         function cleanup_tags($link, $days = 14, $limit = 1000) {
3769
3770                 if (DB_TYPE == "pgsql") {
3771                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
3772                 } else if (DB_TYPE == "mysql") {
3773                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
3774                 }
3775
3776                 $tags_deleted = 0;
3777
3778                 while ($limit > 0) {
3779                         $limit_part = 500;
3780
3781                         $query = "SELECT ttrss_tags.id AS id
3782                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
3783                                 WHERE post_int_id = int_id AND $interval_query AND
3784                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
3785
3786                         $result = db_query($link, $query);
3787
3788                         $ids = array();
3789
3790                         while ($line = db_fetch_assoc($result)) {
3791                                 array_push($ids, $line['id']);
3792                         }
3793
3794                         if (count($ids) > 0) {
3795                                 $ids = join(",", $ids);
3796                                 print ".";
3797
3798                                 $tmp_result = db_query($link, "DELETE FROM ttrss_tags WHERE id IN ($ids)");
3799                                 $tags_deleted += db_affected_rows($link, $tmp_result);
3800                         } else {
3801                                 break;
3802                         }
3803
3804                         $limit -= $limit_part;
3805                 }
3806
3807                 print "\n";
3808
3809                 return $tags_deleted;
3810         }
3811
3812         function print_user_stylesheet($link) {
3813                 $value = get_pref($link, 'USER_STYLESHEET');
3814
3815                 if ($value) {
3816                         print "<style type=\"text/css\">";
3817                         print str_replace("<br/>", "\n", $value);
3818                         print "</style>";
3819                 }
3820
3821         }
3822
3823         function rewrite_urls($html) {
3824                 libxml_use_internal_errors(true);
3825
3826                 $charset_hack = '<head>
3827                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
3828                 </head>';
3829
3830                 $doc = new DOMDocument();
3831                 $doc->loadHTML($charset_hack . $html);
3832                 $xpath = new DOMXPath($doc);
3833
3834                 $entries = $xpath->query('//*/text()');
3835
3836                 foreach ($entries as $entry) {
3837                         if (strstr($entry->wholeText, "://") !== false) {
3838                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
3839                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
3840
3841                                 if ($text != $entry->wholeText) {
3842                                         $cdoc = new DOMDocument();
3843                                         $cdoc->loadHTML($charset_hack . $text);
3844
3845
3846                                         foreach ($cdoc->childNodes as $cnode) {
3847                                                 $cnode = $doc->importNode($cnode, true);
3848
3849                                                 if ($cnode) {
3850                                                         $entry->parentNode->insertBefore($cnode);
3851                                                 }
3852                                         }
3853
3854                                         $entry->parentNode->removeChild($entry);
3855
3856                                 }
3857                         }
3858                 }
3859
3860                 $node = $doc->getElementsByTagName('body')->item(0);
3861
3862                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
3863                 if ($node)
3864                         return $doc->saveXML($node);
3865                 else
3866                         return $html;
3867         }
3868
3869         function filter_to_sql($link, $filter, $owner_uid) {
3870                 $query = array();
3871
3872                 if (DB_TYPE == "pgsql")
3873                         $reg_qpart = "~";
3874                 else
3875                         $reg_qpart = "REGEXP";
3876
3877                 foreach ($filter["rules"] AS $rule) {
3878                         $regexp_valid = preg_match('/' . $rule['reg_exp'] . '/',
3879                                 $rule['reg_exp']) !== FALSE;
3880
3881                         if ($regexp_valid) {
3882
3883                                 $rule['reg_exp'] = db_escape_string($rule['reg_exp']);
3884
3885                                 switch ($rule["type"]) {
3886                                         case "title":
3887                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3888                                                         $rule['reg_exp'] . "')";
3889                                                 break;
3890                                         case "content":
3891                                                 $qpart = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
3892                                                         $rule['reg_exp'] . "')";
3893                                                 break;
3894                                         case "both":
3895                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3896                                                         $rule['reg_exp'] . "') OR LOWER(" .
3897                                                         "ttrss_entries.content) $reg_qpart LOWER('" . $rule['reg_exp'] . "')";
3898                                                 break;
3899                                         case "tag":
3900                                                 $qpart = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
3901                                                         $rule['reg_exp'] . "')";
3902                                                 break;
3903                                         case "link":
3904                                                 $qpart = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
3905                                                         $rule['reg_exp'] . "')";
3906                                                 break;
3907                                         case "author":
3908                                                 $qpart = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
3909                                                         $rule['reg_exp'] . "')";
3910                                                 break;
3911                                 }
3912
3913                                 if (isset($rule["feed_id"]) && $rule["feed_id"] > 0) {
3914                                         $qpart .= " AND feed_id = " . db_escape_string($rule["feed_id"]);
3915                                 }
3916
3917                                 if (isset($rule["cat_id"])) {
3918
3919                                         if ($rule["cat_id"] > 0) {
3920                                                 $children = getChildCategories($link, $rule["cat_id"], $owner_uid);
3921                                                 array_push($children, $rule["cat_id"]);
3922
3923                                                 $children = join(",", $children);
3924
3925                                                 $cat_qpart = "cat_id IN ($children)";
3926                                         } else {
3927                                                 $cat_qpart = "cat_id IS NULL";
3928                                         }
3929
3930                                         $qpart .= " AND $cat_qpart";
3931                                 }
3932
3933                                 array_push($query, "($qpart)");
3934
3935                         }
3936                 }
3937
3938                 if (count($query) > 0) {
3939                         return "(" . join($filter["match_any_rule"] ? "OR" : "AND", $query) . ")";
3940                 } else {
3941                         return "(false)";
3942                 }
3943         }
3944
3945         if (!function_exists('gzdecode')) {
3946                 function gzdecode($string) { // no support for 2nd argument
3947                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
3948                                 base64_encode($string));
3949                 }
3950         }
3951
3952         function get_random_bytes($length) {
3953                 if (function_exists('openssl_random_pseudo_bytes')) {
3954                         return openssl_random_pseudo_bytes($length);
3955                 } else {
3956                         $output = "";
3957
3958                         for ($i = 0; $i < $length; $i++)
3959                                 $output .= chr(mt_rand(0, 255));
3960
3961                         return $output;
3962                 }
3963         }
3964
3965         function read_stdin() {
3966                 $fp = fopen("php://stdin", "r");
3967
3968                 if ($fp) {
3969                         $line = trim(fgets($fp));
3970                         fclose($fp);
3971                         return $line;
3972                 }
3973
3974                 return null;
3975         }
3976
3977         function tmpdirname($path, $prefix) {
3978                 // Use PHP's tmpfile function to create a temporary
3979                 // directory name. Delete the file and keep the name.
3980                 $tempname = tempnam($path,$prefix);
3981                 if (!$tempname)
3982                         return false;
3983
3984                 if (!unlink($tempname))
3985                         return false;
3986
3987        return $tempname;
3988         }
3989
3990         function getFeedCategory($link, $feed) {
3991                 $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
3992                         WHERE id = '$feed'");
3993
3994                 if (db_num_rows($result) > 0) {
3995                         return db_fetch_result($result, 0, "cat_id");
3996                 } else {
3997                         return false;
3998                 }
3999
4000         }
4001
4002         function implements_interface($class, $interface) {
4003                 return in_array($interface, class_implements($class));
4004         }
4005
4006         function geturl($url){
4007
4008                 (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');
4009
4010                 $curl = curl_init();
4011                 $header[0] = "Accept: text/xml,application/xml,application/xhtml+xml,";
4012                 $header[0] .= "text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5";
4013                 $header[] = "Cache-Control: max-age=0";
4014                 $header[] = "Connection: keep-alive";
4015                 $header[] = "Keep-Alive: 300";
4016                 $header[] = "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7";
4017                 $header[] = "Accept-Language: en-us,en;q=0.5";
4018                 $header[] = "Pragma: ";
4019
4020                 curl_setopt($curl, CURLOPT_URL, $url);
4021                 curl_setopt($curl, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20100101 Firefox/5.0 Firefox/5.0');
4022                 curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
4023                 curl_setopt($curl, CURLOPT_HEADER, true);
4024                 curl_setopt($curl, CURLOPT_REFERER, $url);
4025                 curl_setopt($curl, CURLOPT_ENCODING, 'gzip,deflate');
4026                 curl_setopt($curl, CURLOPT_AUTOREFERER, true);
4027                 curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
4028                 //curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); //CURLOPT_FOLLOWLOCATION Disabled...
4029                 curl_setopt($curl, CURLOPT_TIMEOUT, 60);
4030
4031                 $html = curl_exec($curl);
4032
4033                 $status = curl_getinfo($curl);
4034                 curl_close($curl);
4035
4036                 if($status['http_code']!=200){
4037                         if($status['http_code'] == 301 || $status['http_code'] == 302) {
4038                                 list($header) = explode("\r\n\r\n", $html, 2);
4039                                 $matches = array();
4040                                 preg_match("/(Location:|URI:)[^(\n)]*/", $header, $matches);
4041                                 $url = trim(str_replace($matches[1],"",$matches[0]));
4042                                 $url_parsed = parse_url($url);
4043                                 return (isset($url_parsed))? geturl($url, $referer):'';
4044                         }
4045                         $oline='';
4046                         foreach($status as $key=>$eline){$oline.='['.$key.']'.$eline.' ';}
4047                         $line =$oline." \r\n ".$url."\r\n-----------------\r\n";
4048 #                       $handle = @fopen('./curl.error.log', 'a');
4049 #                       fwrite($handle, $line);
4050                         return FALSE;
4051                 }
4052                 return $url;
4053         }
4054
4055         function get_minified_js($files) {
4056                 require_once 'lib/jshrink/Minifier.php';
4057
4058                 $rv = '';
4059
4060                 foreach ($files as $js) {
4061                         if (!isset($_GET['debug'])) {
4062                                 $cached_file = CACHE_DIR . "/js/$js.js";
4063
4064                                 if (file_exists($cached_file) &&
4065                                                 is_readable($cached_file) &&
4066                                                 filemtime($cached_file) >= filemtime("js/$js.js")) {
4067
4068                                         $rv .= file_get_contents($cached_file);
4069
4070                                 } else {
4071                                         $minified = JShrink\Minifier::minify(file_get_contents("js/$js.js"));
4072                                         file_put_contents($cached_file, $minified);
4073                                         $rv .= $minified;
4074                                 }
4075                         } else {
4076                                 $rv .= file_get_contents("js/$js.js");
4077                         }
4078                 }
4079
4080                 return $rv;
4081         }
4082
4083         function stylesheet_tag($filename) {
4084                 $timestamp = filemtime($filename);
4085
4086                 echo "<link rel=\"stylesheet\" type=\"text/css\" href=\"$filename?$timestamp\"/>\n";
4087         }
4088
4089         function javascript_tag($filename) {
4090                 $query = "";
4091
4092                 if (!(strpos($filename, "?") === FALSE)) {
4093                         $query = substr($filename, strpos($filename, "?")+1);
4094                         $filename = substr($filename, 0, strpos($filename, "?"));
4095                 }
4096
4097                 $timestamp = filemtime($filename);
4098
4099                 if ($query) $timestamp .= "&$query";
4100
4101                 echo "<script type=\"text/javascript\" charset=\"utf-8\" src=\"$filename?$timestamp\"></script>\n";
4102         }
4103
4104 ?>