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                 foreach (array("ON_CATCHUP_SHOW_NEXT_FEED", "HIDE_READ_FEEDS",
1835                         "ENABLE_FEED_CATS", "FEEDS_SORT_BY_UNREAD", "CONFIRM_FEED_CATCHUP",
1836                         "CDM_AUTO_CATCHUP", "FRESH_ARTICLE_MAX_AGE", "DEFAULT_ARTICLE_LIMIT",
1837                         "HIDE_READ_SHOWS_SPECIAL", "COMBINED_DISPLAY_MODE") as $param) {
1838
1839                                  $params[strtolower($param)] = (int) get_pref($link, $param);
1840                  }
1841
1842                 $params["icons_url"] = ICONS_URL;
1843                 $params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
1844                 $params["default_view_mode"] = get_pref($link, "_DEFAULT_VIEW_MODE");
1845                 $params["default_view_limit"] = (int) get_pref($link, "_DEFAULT_VIEW_LIMIT");
1846                 $params["default_view_order_by"] = get_pref($link, "_DEFAULT_VIEW_ORDER_BY");
1847                 $params["bw_limit"] = (int) $_SESSION["bw_limit"];
1848
1849                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
1850                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1851
1852                 $max_feed_id = db_fetch_result($result, 0, "mid");
1853                 $num_feeds = db_fetch_result($result, 0, "nf");
1854
1855                 $params["max_feed_id"] = (int) $max_feed_id;
1856                 $params["num_feeds"] = (int) $num_feeds;
1857
1858                 $params["collapsed_feedlist"] = (int) get_pref($link, "_COLLAPSED_FEEDLIST");
1859                 $params["hotkeys"] = get_hotkeys_map($link);
1860
1861                 $params["csrf_token"] = $_SESSION["csrf_token"];
1862                 $params["widescreen"] = (int) $_COOKIE["ttrss_widescreen"];
1863
1864                 $params['simple_update'] = defined('SIMPLE_UPDATE_MODE') && SIMPLE_UPDATE_MODE;
1865
1866                 return $params;
1867         }
1868
1869         function get_hotkeys_info($link) {
1870                 $hotkeys = array(
1871                         __("Navigation") => array(
1872                                 "next_feed" => __("Open next feed"),
1873                                 "prev_feed" => __("Open previous feed"),
1874                                 "next_article" => __("Open next article"),
1875                                 "prev_article" => __("Open previous article"),
1876                                 "next_article_noscroll" => __("Open next article (don't scroll long articles)"),
1877                                 "prev_article_noscroll" => __("Open previous article (don't scroll long articles)"),
1878                                 "search_dialog" => __("Show search dialog")),
1879                         __("Article") => array(
1880                                 "toggle_mark" => __("Toggle starred"),
1881                                 "toggle_publ" => __("Toggle published"),
1882                                 "toggle_unread" => __("Toggle unread"),
1883                                 "edit_tags" => __("Edit tags"),
1884                                 "dismiss_selected" => __("Dismiss selected"),
1885                                 "dismiss_read" => __("Dismiss read"),
1886                                 "open_in_new_window" => __("Open in new window"),
1887                                 "catchup_below" => __("Mark below as read"),
1888                                 "catchup_above" => __("Mark above as read"),
1889                                 "article_scroll_down" => __("Scroll down"),
1890                                 "article_scroll_up" => __("Scroll up"),
1891                                 "select_article_cursor" => __("Select article under cursor"),
1892                                 "email_article" => __("Email article"),
1893                                 "close_article" => __("Close/collapse article"),
1894                                 "toggle_widescreen" => __("Toggle widescreen mode"),
1895                                 "toggle_embed_original" => __("Toggle embed original")),
1896                         __("Article selection") => array(
1897                                 "select_all" => __("Select all articles"),
1898                                 "select_unread" => __("Select unread"),
1899                                 "select_marked" => __("Select starred"),
1900                                 "select_published" => __("Select published"),
1901                                 "select_invert" => __("Invert selection"),
1902                                 "select_none" => __("Deselect everything")),
1903                         __("Feed") => array(
1904                                 "feed_refresh" => __("Refresh current feed"),
1905                                 "feed_unhide_read" => __("Un/hide read feeds"),
1906                                 "feed_subscribe" => __("Subscribe to feed"),
1907                                 "feed_edit" => __("Edit feed"),
1908                                 "feed_catchup" => __("Mark as read"),
1909                                 "feed_reverse" => __("Reverse headlines"),
1910                                 "feed_debug_update" => __("Debug feed update"),
1911                                 "catchup_all" => __("Mark all feeds as read"),
1912                                 "cat_toggle_collapse" => __("Un/collapse current category"),
1913                                 "toggle_combined_mode" => __("Toggle combined mode")),
1914                         __("Go to") => array(
1915                                 "goto_all" => __("All articles"),
1916                                 "goto_fresh" => __("Fresh"),
1917                                 "goto_marked" => __("Starred"),
1918                                 "goto_published" => __("Published"),
1919                                 "goto_tagcloud" => __("Tag cloud"),
1920                                 "goto_prefs" => __("Preferences")),
1921                         __("Other") => array(
1922                                 "create_label" => __("Create label"),
1923                                 "create_filter" => __("Create filter"),
1924                                 "collapse_sidebar" => __("Un/collapse sidebar"),
1925                                 "help_dialog" => __("Show help dialog"))
1926                         );
1927
1928                 return $hotkeys;
1929         }
1930
1931         function get_hotkeys_map($link) {
1932                 $hotkeys = array(
1933 //                      "navigation" => array(
1934                                 "k" => "next_feed",
1935                                 "j" => "prev_feed",
1936                                 "n" => "next_article",
1937                                 "p" => "prev_article",
1938                                 "(38)|up" => "prev_article",
1939                                 "(40)|down" => "next_article",
1940 //                              "^(38)|Ctrl-up" => "prev_article_noscroll",
1941 //                              "^(40)|Ctrl-down" => "next_article_noscroll",
1942                                 "(191)|/" => "search_dialog",
1943 //                      "article" => array(
1944                                 "s" => "toggle_mark",
1945                                 "*s" => "toggle_publ",
1946                                 "u" => "toggle_unread",
1947                                 "*t" => "edit_tags",
1948                                 "*d" => "dismiss_selected",
1949                                 "*x" => "dismiss_read",
1950                                 "o" => "open_in_new_window",
1951                                 "c p" => "catchup_below",
1952                                 "c n" => "catchup_above",
1953                                 "*n" => "article_scroll_down",
1954                                 "*p" => "article_scroll_up",
1955                                 "*(38)|Shift+up" => "article_scroll_up",
1956                                 "*(40)|Shift+down" => "article_scroll_down",
1957                                 "a *w" => "toggle_widescreen",
1958                                 "a e" => "toggle_embed_original",
1959                                 "e" => "email_article",
1960                                 "a q" => "close_article",
1961 //                      "article_selection" => array(
1962                                 "a a" => "select_all",
1963                                 "a u" => "select_unread",
1964                                 "a *u" => "select_marked",
1965                                 "a p" => "select_published",
1966                                 "a i" => "select_invert",
1967                                 "a n" => "select_none",
1968 //                      "feed" => array(
1969                                 "f r" => "feed_refresh",
1970                                 "f a" => "feed_unhide_read",
1971                                 "f s" => "feed_subscribe",
1972                                 "f e" => "feed_edit",
1973                                 "f q" => "feed_catchup",
1974                                 "f x" => "feed_reverse",
1975                                 "f *d" => "feed_debug_update",
1976                                 "f *c" => "toggle_combined_mode",
1977                                 "*q" => "catchup_all",
1978                                 "x" => "cat_toggle_collapse",
1979 //                      "goto" => array(
1980                                 "g a" => "goto_all",
1981                                 "g f" => "goto_fresh",
1982                                 "g s" => "goto_marked",
1983                                 "g p" => "goto_published",
1984                                 "g t" => "goto_tagcloud",
1985                                 "g *p" => "goto_prefs",
1986 //                      "other" => array(
1987                                 "(9)|Tab" => "select_article_cursor", // tab
1988                                 "c l" => "create_label",
1989                                 "c f" => "create_filter",
1990                                 "c s" => "collapse_sidebar",
1991                                 "^(191)|Ctrl+/" => "help_dialog",
1992                         );
1993
1994                 if (get_pref($link, 'COMBINED_DISPLAY_MODE')) {
1995                         $hotkeys["^(38)|Ctrl-up"] = "prev_article_noscroll";
1996                         $hotkeys["^(40)|Ctrl-down"] = "next_article_noscroll";
1997                 }
1998
1999                 global $pluginhost;
2000                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_HOTKEY_MAP) as $plugin) {
2001                         $hotkeys = $plugin->hook_hotkey_map($hotkeys);
2002                 }
2003
2004                 $prefixes = array();
2005
2006                 foreach (array_keys($hotkeys) as $hotkey) {
2007                         $pair = explode(" ", $hotkey, 2);
2008
2009                         if (count($pair) > 1 && !in_array($pair[0], $prefixes)) {
2010                                 array_push($prefixes, $pair[0]);
2011                         }
2012                 }
2013
2014                 return array($prefixes, $hotkeys);
2015         }
2016
2017         function make_runtime_info($link) {
2018                 $data = array();
2019
2020                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2021                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2022
2023                 $max_feed_id = db_fetch_result($result, 0, "mid");
2024                 $num_feeds = db_fetch_result($result, 0, "nf");
2025
2026                 $data["max_feed_id"] = (int) $max_feed_id;
2027                 $data["num_feeds"] = (int) $num_feeds;
2028
2029                 $data['last_article_id'] = getLastArticleId($link);
2030                 $data['cdm_expanded'] = get_pref($link, 'CDM_EXPANDED');
2031
2032                 $data['dep_ts'] = calculate_dep_timestamp();
2033
2034                 if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
2035
2036                         $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
2037
2038                         if (time() - $_SESSION["daemon_stamp_check"] > 30) {
2039
2040                                 $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
2041
2042                                 if ($stamp) {
2043                                         $stamp_delta = time() - $stamp;
2044
2045                                         if ($stamp_delta > 1800) {
2046                                                 $stamp_check = 0;
2047                                         } else {
2048                                                 $stamp_check = 1;
2049                                                 $_SESSION["daemon_stamp_check"] = time();
2050                                         }
2051
2052                                         $data['daemon_stamp_ok'] = $stamp_check;
2053
2054                                         $stamp_fmt = date("Y.m.d, G:i", $stamp);
2055
2056                                         $data['daemon_stamp'] = $stamp_fmt;
2057                                 }
2058                         }
2059                 }
2060
2061                 if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
2062                                 $new_version_details = @check_for_update($link);
2063
2064                                 $data['new_version_available'] = (int) ($new_version_details != false);
2065
2066                                 $_SESSION["last_version_check"] = time();
2067                                 $_SESSION["version_data"] = $new_version_details;
2068                 }
2069
2070                 return $data;
2071         }
2072
2073         function search_to_sql($link, $search) {
2074
2075                 $search_query_part = "";
2076
2077                 $keywords = explode(" ", $search);
2078                 $query_keywords = array();
2079
2080                 foreach ($keywords as $k) {
2081                         if (strpos($k, "-") === 0) {
2082                                 $k = substr($k, 1);
2083                                 $not = "NOT";
2084                         } else {
2085                                 $not = "";
2086                         }
2087
2088                         $commandpair = explode(":", mb_strtolower($k), 2);
2089
2090                         if ($commandpair[0] == "note" && $commandpair[1]) {
2091
2092                                 if ($commandpair[1] == "true")
2093                                         array_push($query_keywords, "($not (note IS NOT NULL AND note != ''))");
2094                                 else
2095                                         array_push($query_keywords, "($not (note IS NULL OR note = ''))");
2096
2097                         } else if ($commandpair[0] == "star" && $commandpair[1]) {
2098
2099                                 if ($commandpair[1] == "true")
2100                                         array_push($query_keywords, "($not (marked = true))");
2101                                 else
2102                                         array_push($query_keywords, "($not (marked = false))");
2103
2104                         } else if ($commandpair[0] == "pub" && $commandpair[1]) {
2105
2106                                 if ($commandpair[1] == "true")
2107                                         array_push($query_keywords, "($not (published = true))");
2108                                 else
2109                                         array_push($query_keywords, "($not (published = false))");
2110
2111                         } else if (strpos($k, "@") === 0) {
2112
2113                                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $_SESSION['uid']);
2114                                 $orig_ts = strtotime(substr($k, 1));
2115                                 $k = date("Y-m-d", convert_timestamp($orig_ts, $user_tz_string, 'UTC'));
2116
2117                                 //$k = date("Y-m-d", strtotime(substr($k, 1)));
2118
2119                                 array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
2120                         } else {
2121                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2122                                                 OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2123                         }
2124                 }
2125
2126                 $search_query_part = implode("AND", $query_keywords);
2127
2128                 return $search_query_part;
2129         }
2130
2131         function getParentCategories($link, $cat, $owner_uid) {
2132                 $rv = array();
2133
2134                 $result = db_query($link, "SELECT parent_cat FROM ttrss_feed_categories
2135                         WHERE id = '$cat' AND parent_cat IS NOT NULL AND owner_uid = $owner_uid");
2136
2137                 while ($line = db_fetch_assoc($result)) {
2138                         array_push($rv, $line["parent_cat"]);
2139                         $rv = array_merge($rv, getParentCategories($link, $line["parent_cat"], $owner_uid));
2140                 }
2141
2142                 return $rv;
2143         }
2144
2145         function getChildCategories($link, $cat, $owner_uid) {
2146                 $rv = array();
2147
2148                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories
2149                         WHERE parent_cat = '$cat' AND owner_uid = $owner_uid");
2150
2151                 while ($line = db_fetch_assoc($result)) {
2152                         array_push($rv, $line["id"]);
2153                         $rv = array_merge($rv, getChildCategories($link, $line["id"], $owner_uid));
2154                 }
2155
2156                 return $rv;
2157         }
2158
2159         function queryFeedHeadlines($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, $ignore_vfeed_group = false) {
2160
2161                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2162
2163                 $ext_tables_part = "";
2164
2165                         if ($search) {
2166
2167                                 if (SPHINX_ENABLED) {
2168                                         $ids = join(",", @sphinx_search($search, 0, 500));
2169
2170                                         if ($ids)
2171                                                 $search_query_part = "ref_id IN ($ids) AND ";
2172                                         else
2173                                                 $search_query_part = "ref_id = -1 AND ";
2174
2175                                 } else {
2176                                         $search_query_part = search_to_sql($link, $search);
2177                                         $search_query_part .= " AND ";
2178                                 }
2179
2180                         } else {
2181                                 $search_query_part = "";
2182                         }
2183
2184                         if ($filter) {
2185
2186                                 if (DB_TYPE == "pgsql") {
2187                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '14 days' ";
2188                                 } else {
2189                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL 14 DAY) ";
2190                                 }
2191
2192                                 $override_order = "updated DESC";
2193
2194                                 $filter_query_part = filter_to_sql($link, $filter, $owner_uid);
2195
2196                                 // Try to check if SQL regexp implementation chokes on a valid regexp
2197                                 $result = db_query($link, "SELECT true AS true_val FROM ttrss_entries,
2198                                         ttrss_user_entries, ttrss_feeds, ttrss_feed_categories
2199                                         WHERE $filter_query_part LIMIT 1", false);
2200
2201                                 if ($result) {
2202                                         $test = db_fetch_result($result, 0, "true_val");
2203
2204                                         if (!$test) {
2205                                                 $filter_query_part = "false AND";
2206                                         } else {
2207                                                 $filter_query_part .= " AND";
2208                                         }
2209                                 } else {
2210                                         $filter_query_part = "false AND";
2211                                 }
2212
2213                         } else {
2214                                 $filter_query_part = "";
2215                         }
2216
2217                         if ($since_id) {
2218                                 $since_id_part = "ttrss_entries.id > $since_id AND ";
2219                         } else {
2220                                 $since_id_part = "";
2221                         }
2222
2223                         $view_query_part = "";
2224
2225                         if ($view_mode == "adaptive" || $view_query_part == "noscores") {
2226                                 if ($search) {
2227                                         $view_query_part = " ";
2228                                 } else if ($feed != -1) {
2229                                         $unread = getFeedUnread($link, $feed, $cat_view);
2230
2231                                         if ($cat_view && $feed > 0 && $include_children)
2232                                                 $unread += getCategoryChildrenUnread($link, $feed);
2233
2234                                         if ($unread > 0) {
2235                                                 $view_query_part = " unread = true AND ";
2236                                         }
2237                                 }
2238                         }
2239
2240                         if ($view_mode == "marked") {
2241                                 $view_query_part = " marked = true AND ";
2242                         }
2243
2244                         if ($view_mode == "published") {
2245                                 $view_query_part = " published = true AND ";
2246                         }
2247
2248                         if ($view_mode == "unread") {
2249                                 $view_query_part = " unread = true AND ";
2250                         }
2251
2252                         if ($view_mode == "updated") {
2253                                 $view_query_part = " (last_read is null and unread = false) AND ";
2254                         }
2255
2256                         if ($limit > 0) {
2257                                 $limit_query_part = "LIMIT " . $limit;
2258                         }
2259
2260                         $allow_archived = false;
2261
2262                         $vfeed_query_part = "";
2263
2264                         // override query strategy and enable feed display when searching globally
2265                         if ($search && $search_mode == "all_feeds") {
2266                                 $query_strategy_part = "true";
2267                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2268                         /* tags */
2269                         } else if (!is_numeric($feed)) {
2270                                 $query_strategy_part = "true";
2271                                 $vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
2272                                         id = feed_id) as feed_title,";
2273                         } else if ($search && $search_mode == "this_cat") {
2274                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2275
2276                                 if ($feed > 0) {
2277                                         if ($include_children) {
2278                                                 $subcats = getChildCategories($link, $feed, $owner_uid);
2279                                                 array_push($subcats, $feed);
2280                                                 $cats_qpart = join(",", $subcats);
2281                                         } else {
2282                                                 $cats_qpart = $feed;
2283                                         }
2284
2285                                         $query_strategy_part = "ttrss_feeds.cat_id IN ($cats_qpart)";
2286
2287                                 } else {
2288                                         $query_strategy_part = "ttrss_feeds.cat_id IS NULL";
2289                                 }
2290
2291                         } else if ($feed > 0) {
2292
2293                                 if ($cat_view) {
2294
2295                                         if ($feed > 0) {
2296                                                 if ($include_children) {
2297                                                         # sub-cats
2298                                                         $subcats = getChildCategories($link, $feed, $owner_uid);
2299
2300                                                         array_push($subcats, $feed);
2301                                                         $query_strategy_part = "cat_id IN (".
2302                                                                         implode(",", $subcats).")";
2303
2304                                                 } else {
2305                                                         $query_strategy_part = "cat_id = '$feed'";
2306                                                 }
2307
2308                                         } else {
2309                                                 $query_strategy_part = "cat_id IS NULL";
2310                                         }
2311
2312                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2313
2314                                 } else {
2315                                         $query_strategy_part = "feed_id = '$feed'";
2316                                 }
2317                         } else if ($feed == 0 && !$cat_view) { // archive virtual feed
2318                                 $query_strategy_part = "feed_id IS NULL";
2319                                 $allow_archived = true;
2320                         } else if ($feed == 0 && $cat_view) { // uncategorized
2321                                 $query_strategy_part = "cat_id IS NULL AND feed_id IS NOT NULL";
2322                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2323                         } else if ($feed == -1) { // starred virtual feed
2324                                 $query_strategy_part = "marked = true";
2325                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2326                                 $allow_archived = true;
2327
2328                                 if (!$override_order) $override_order = "last_marked DESC, updated DESC";
2329
2330                         } else if ($feed == -2) { // published virtual feed OR labels category
2331
2332                                 if (!$cat_view) {
2333                                         $query_strategy_part = "published = true";
2334                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2335                                         $allow_archived = true;
2336
2337                                         if (!$override_order) $override_order = "last_published DESC, updated DESC";
2338                                 } else {
2339                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2340
2341                                         $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2342
2343                                         $query_strategy_part = "ttrss_labels2.id = ttrss_user_labels2.label_id AND
2344                                                 ttrss_user_labels2.article_id = ref_id";
2345
2346                                 }
2347                         } else if ($feed == -6) { // recently read
2348                                 $query_strategy_part = "unread = false AND last_read IS NOT NULL";
2349                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2350                                 $allow_archived = true;
2351
2352                                 if (!$override_order) $override_order = "last_read DESC";
2353                         } else if ($feed == -3) { // fresh virtual feed
2354                                 $query_strategy_part = "unread = true AND score >= 0";
2355
2356                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
2357
2358                                 if (DB_TYPE == "pgsql") {
2359                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
2360                                 } else {
2361                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
2362                                 }
2363
2364                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2365                         } else if ($feed == -4) { // all articles virtual feed
2366                                 $query_strategy_part = "true";
2367                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2368                         } else if ($feed <= -10) { // labels
2369                                 $label_id = -$feed - 11;
2370
2371                                 $query_strategy_part = "label_id = '$label_id' AND
2372                                         ttrss_labels2.id = ttrss_user_labels2.label_id AND
2373                                         ttrss_user_labels2.article_id = ref_id";
2374
2375                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2376                                 $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2377                                 $allow_archived = true;
2378
2379                         } else {
2380                                 $query_strategy_part = "true";
2381                         }
2382
2383                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
2384                                 $date_sort_field = "updated";
2385                         } else {
2386                                 $date_sort_field = "date_entered";
2387                         }
2388
2389                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
2390                                 $order_by = "$date_sort_field";
2391                         } else {
2392                                 $order_by = "$date_sort_field DESC";
2393                         }
2394
2395                         if ($view_mode != "noscores") {
2396                                 $order_by = "score DESC, $order_by";
2397                         }
2398
2399                         if ($override_order) {
2400                                 $order_by = $override_order;
2401                         }
2402
2403                         $feed_title = "";
2404
2405                         if ($search) {
2406                                 $feed_title = T_sprintf("Search results: %s", $search);
2407                         } else {
2408                                 if ($cat_view) {
2409                                         $feed_title = getCategoryTitle($link, $feed);
2410                                 } else {
2411                                         if (is_numeric($feed) && $feed > 0) {
2412                                                 $result = db_query($link, "SELECT title,site_url,last_error
2413                                                         FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = $owner_uid");
2414
2415                                                 $feed_title = db_fetch_result($result, 0, "title");
2416                                                 $feed_site_url = db_fetch_result($result, 0, "site_url");
2417                                                 $last_error = db_fetch_result($result, 0, "last_error");
2418                                         } else {
2419                                                 $feed_title = getFeedTitle($link, $feed);
2420                                         }
2421                                 }
2422                         }
2423
2424                         $content_query_part = "content as content_preview, cached_content, ";
2425
2426                         if (is_numeric($feed)) {
2427
2428                                 if ($feed >= 0) {
2429                                         $feed_kind = "Feeds";
2430                                 } else {
2431                                         $feed_kind = "Labels";
2432                                 }
2433
2434                                 if ($limit_query_part) {
2435                                         $offset_query_part = "OFFSET $offset";
2436                                 }
2437
2438                                 // proper override_order applied above
2439                                 if ($vfeed_query_part && !$ignore_vfeed_group && get_pref($link, 'VFEED_GROUP_BY_FEED', $owner_uid)) {
2440                                         if (!$override_order) {
2441                                                 $order_by = "ttrss_feeds.title, $order_by";
2442                                         } else {
2443                                                 $order_by = "ttrss_feeds.title, $override_order";
2444                                         }
2445                                 }
2446
2447                                 if (!$allow_archived) {
2448                                         $from_qpart = "ttrss_entries,ttrss_user_entries,ttrss_feeds$ext_tables_part";
2449                                         $feed_check_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
2450
2451                                 } else {
2452                                         $from_qpart = "ttrss_entries$ext_tables_part,ttrss_user_entries
2453                                                 LEFT JOIN ttrss_feeds ON (feed_id = ttrss_feeds.id)";
2454                                 }
2455
2456                                 $query = "SELECT DISTINCT
2457                                                 date_entered,
2458                                                 guid,
2459                                                 ttrss_entries.id,ttrss_entries.title,
2460                                                 updated,
2461                                                 label_cache,
2462                                                 tag_cache,
2463                                                 always_display_enclosures,
2464                                                 site_url,
2465                                                 note,
2466                                                 num_comments,
2467                                                 comments,
2468                                                 int_id,
2469                                                 hide_images,
2470                                                 unread,feed_id,marked,published,link,last_read,orig_feed_id,
2471                                                 last_marked, last_published,
2472                                                 ".SUBSTRING_FOR_DATE."(last_read,1,19) as last_read_noms,
2473                                                 $vfeed_query_part
2474                                                 $content_query_part
2475                                                 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated_noms,
2476                                                 author,score
2477                                         FROM
2478                                                 $from_qpart
2479                                         WHERE
2480                                         $feed_check_qpart
2481                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
2482                                         ttrss_user_entries.owner_uid = '$owner_uid' AND
2483                                         $search_query_part
2484                                         $filter_query_part
2485                                         $view_query_part
2486                                         $since_id_part
2487                                         $query_strategy_part ORDER BY $order_by
2488                                         $limit_query_part $offset_query_part";
2489
2490                                 if ($_REQUEST["debug"]) print $query;
2491
2492                                 $result = db_query($link, $query);
2493
2494                         } else {
2495                                 // browsing by tag
2496
2497                                 $select_qpart = "SELECT DISTINCT " .
2498                                                                 "date_entered," .
2499                                                                 "guid," .
2500                                                                 "note," .
2501                                                                 "ttrss_entries.id as id," .
2502                                                                 "title," .
2503                                                                 "updated," .
2504                                                                 "unread," .
2505                                                                 "feed_id," .
2506                                                                 "orig_feed_id," .
2507                                                                 "marked," .
2508                                                                 "num_comments, " .
2509                                                                 "comments, " .
2510                                                                 "tag_cache," .
2511                                                                 "label_cache," .
2512                                                                 "link," .
2513                                                                 "last_read," .
2514                                                                 "(SELECT hide_images FROM ttrss_feeds WHERE id = feed_id) AS hide_images," .
2515                                                                 "last_marked, last_published, " .
2516                                                                 SUBSTRING_FOR_DATE . "(last_read,1,19) as last_read_noms," .
2517                                                                 $since_id_part .
2518                                                                 $vfeed_query_part .
2519                                                                 $content_query_part .
2520                                                                 SUBSTRING_FOR_DATE . "(updated,1,19) as updated_noms," .
2521                                                                 "score ";
2522
2523                                 $feed_kind = "Tags";
2524                                 $all_tags = explode(",", $feed);
2525                                 if ($search_mode == 'any') {
2526                                         $tag_sql = "tag_name in (" . implode(", ", array_map("db_quote", $all_tags)) . ")";
2527                                         $from_qpart = " FROM ttrss_entries,ttrss_user_entries,ttrss_tags ";
2528                                         $where_qpart = " WHERE " .
2529                                                                    "ref_id = ttrss_entries.id AND " .
2530                                                                    "ttrss_user_entries.owner_uid = $owner_uid AND " .
2531                                                                    "post_int_id = int_id AND $tag_sql AND " .
2532                                                                    $view_query_part .
2533                                                                    $search_query_part .
2534                                                                    $query_strategy_part . " ORDER BY $order_by " .
2535                                                                    $limit_query_part;
2536
2537                                 } else {
2538                                         $i = 1;
2539                                         $sub_selects = array();
2540                                         $sub_ands = array();
2541                                         foreach ($all_tags as $term) {
2542                                                 array_push($sub_selects, "(SELECT post_int_id from ttrss_tags WHERE tag_name = " . db_quote($term) . " AND owner_uid = $owner_uid) as A$i");
2543                                                 $i++;
2544                                         }
2545                                         if ($i > 2) {
2546                                                 $x = 1;
2547                                                 $y = 2;
2548                                                 do {
2549                                                         array_push($sub_ands, "A$x.post_int_id = A$y.post_int_id");
2550                                                         $x++;
2551                                                         $y++;
2552                                                 } while ($y < $i);
2553                                         }
2554                                         array_push($sub_ands, "A1.post_int_id = ttrss_user_entries.int_id and ttrss_user_entries.owner_uid = $owner_uid");
2555                                         array_push($sub_ands, "ttrss_user_entries.ref_id = ttrss_entries.id");
2556                                         $from_qpart = " FROM " . implode(", ", $sub_selects) . ", ttrss_user_entries, ttrss_entries";
2557                                         $where_qpart = " WHERE " . implode(" AND ", $sub_ands);
2558                                 }
2559                                 //                              error_log("TAG SQL: " . $tag_sql);
2560                                 // $tag_sql = "tag_name = '$feed'";   DEFAULT way
2561
2562                                 //                              error_log("[". $select_qpart . "][" . $from_qpart . "][" .$where_qpart . "]");
2563                                 $result = db_query($link, $select_qpart . $from_qpart . $where_qpart);
2564                         }
2565
2566                         return array($result, $feed_title, $feed_site_url, $last_error);
2567
2568         }
2569
2570         function sanitize($link, $str, $force_remove_images = false, $owner = false, $site_url = false) {
2571                 if (!$owner) $owner = $_SESSION["uid"];
2572
2573                 $res = trim($str); if (!$res) return '';
2574
2575                 if (strpos($res, "href=") === false)
2576                         $res = rewrite_urls($res);
2577
2578                 $charset_hack = '<head>
2579                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
2580                 </head>';
2581
2582                 $res = trim($res); if (!$res) return '';
2583
2584                 libxml_use_internal_errors(true);
2585
2586                 $doc = new DOMDocument();
2587                 $doc->loadHTML($charset_hack . $res);
2588                 $xpath = new DOMXPath($doc);
2589
2590                 $entries = $xpath->query('(//a[@href]|//img[@src])');
2591
2592                 foreach ($entries as $entry) {
2593
2594                         if ($site_url) {
2595
2596                                 if ($entry->hasAttribute('href'))
2597                                         $entry->setAttribute('href',
2598                                                 rewrite_relative_url($site_url, $entry->getAttribute('href')));
2599
2600                                 if ($entry->hasAttribute('src')) {
2601                                         $src = rewrite_relative_url($site_url, $entry->getAttribute('src'));
2602
2603                                         $cached_filename = CACHE_DIR . '/images/' . sha1($src) . '.png';
2604
2605                                         if (file_exists($cached_filename)) {
2606                                                 $src = SELF_URL_PATH . '/image.php?hash=' . sha1($src);
2607                                         }
2608
2609                                         $entry->setAttribute('src', $src);
2610                                 }
2611
2612                                 if ($entry->nodeName == 'img') {
2613                                         if (($owner && get_pref($link, "STRIP_IMAGES", $owner)) ||
2614                                                         $force_remove_images) {
2615
2616                                                 $p = $doc->createElement('p');
2617
2618                                                 $a = $doc->createElement('a');
2619                                                 $a->setAttribute('href', $entry->getAttribute('src'));
2620
2621                                                 $a->appendChild(new DOMText($entry->getAttribute('src')));
2622                                                 $a->setAttribute('target', '_blank');
2623
2624                                                 $p->appendChild($a);
2625
2626                                                 $entry->parentNode->replaceChild($p, $entry);
2627                                         }
2628                                 }
2629                         }
2630
2631                         if (strtolower($entry->nodeName) == "a") {
2632                                 $entry->setAttribute("target", "_blank");
2633                         }
2634                 }
2635
2636                 $entries = $xpath->query('//iframe');
2637                 foreach ($entries as $entry) {
2638                         $entry->setAttribute('sandbox', 'allow-scripts');
2639
2640                 }
2641
2642                 global $pluginhost;
2643
2644                 if (isset($pluginhost)) {
2645                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_SANITIZE) as $plugin) {
2646                                 $doc = $plugin->hook_sanitize($doc, $site_url);
2647                         }
2648                 }
2649
2650                 $doc->removeChild($doc->firstChild); //remove doctype
2651                 $doc = strip_harmful_tags($doc);
2652                 $res = $doc->saveHTML();
2653                 return $res;
2654         }
2655
2656         function strip_harmful_tags($doc) {
2657                 $entries = $doc->getElementsByTagName("*");
2658
2659                 $allowed_elements = array('a', 'address', 'audio', 'article',
2660                         'b', 'big', 'blockquote', 'body', 'br', 'cite',
2661                         'code', 'dd', 'del', 'details', 'div', 'dl', 'font',
2662                         'dt', 'em', 'footer', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6',
2663                         'header', 'html', 'i', 'img', 'ins', 'kbd',
2664                         'li', 'nav', 'ol', 'p', 'pre', 'q', 's','small',
2665                         'source', 'span', 'strike', 'strong', 'sub', 'summary',
2666                         'sup', 'table', 'tbody', 'td', 'tfoot', 'th', 'thead',
2667                         'tr', 'track', 'tt', 'u', 'ul', 'var', 'wbr', 'video' );
2668
2669                 if ($_SESSION['hasSandbox']) array_push($allowed_elements, 'iframe');
2670
2671                 $disallowed_attributes = array('id', 'style', 'class');
2672
2673                 foreach ($entries as $entry) {
2674                         if (!in_array($entry->nodeName, $allowed_elements)) {
2675                                 $entry->parentNode->removeChild($entry);
2676                         }
2677
2678                         if ($entry->hasAttributes()) {
2679                                 foreach (iterator_to_array($entry->attributes) as $attr) {
2680
2681                                         if (strpos($attr->nodeName, 'on') === 0) {
2682                                                 $entry->removeAttributeNode($attr);
2683                                         }
2684
2685                                         if (in_array($attr->nodeName, $disallowed_attributes)) {
2686                                                 $entry->removeAttributeNode($attr);
2687                                         }
2688                                 }
2689                         }
2690                 }
2691
2692                 return $doc;
2693         }
2694
2695         function check_for_update($link) {
2696                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2697                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION .
2698                                 "&iid=" . sha1(SELF_URL_PATH);
2699
2700                         $version_data = @fetch_file_contents($version_url);
2701
2702                         if ($version_data) {
2703                                 $version_data = json_decode($version_data, true);
2704                                 if ($version_data && $version_data['version']) {
2705
2706                                         if (version_compare(VERSION, $version_data['version']) == -1) {
2707                                                 return $version_data;
2708                                         }
2709                                 }
2710                         }
2711                 }
2712                 return false;
2713         }
2714
2715         function catchupArticlesById($link, $ids, $cmode, $owner_uid = false) {
2716
2717                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2718                 if (count($ids) == 0) return;
2719
2720                 $tmp_ids = array();
2721
2722                 foreach ($ids as $id) {
2723                         array_push($tmp_ids, "ref_id = '$id'");
2724                 }
2725
2726                 $ids_qpart = join(" OR ", $tmp_ids);
2727
2728                 if ($cmode == 0) {
2729                         db_query($link, "UPDATE ttrss_user_entries SET
2730                         unread = false,last_read = NOW()
2731                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2732                 } else if ($cmode == 1) {
2733                         db_query($link, "UPDATE ttrss_user_entries SET
2734                         unread = true
2735                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2736                 } else {
2737                         db_query($link, "UPDATE ttrss_user_entries SET
2738                         unread = NOT unread,last_read = NOW()
2739                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2740                 }
2741
2742                 /* update ccache */
2743
2744                 $result = db_query($link, "SELECT DISTINCT feed_id FROM ttrss_user_entries
2745                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2746
2747                 while ($line = db_fetch_assoc($result)) {
2748                         ccache_update($link, $line["feed_id"], $owner_uid);
2749                 }
2750         }
2751
2752         function get_article_tags($link, $id, $owner_uid = 0, $tag_cache = false) {
2753
2754                 $a_id = db_escape_string($id);
2755
2756                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2757
2758                 $query = "SELECT DISTINCT tag_name,
2759                         owner_uid as owner FROM
2760                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
2761                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
2762
2763                 $obj_id = md5("TAGS:$owner_uid:$id");
2764                 $tags = array();
2765
2766                 /* check cache first */
2767
2768                 if ($tag_cache === false) {
2769                         $result = db_query($link, "SELECT tag_cache FROM ttrss_user_entries
2770                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2771
2772                         $tag_cache = db_fetch_result($result, 0, "tag_cache");
2773                 }
2774
2775                 if ($tag_cache) {
2776                         $tags = explode(",", $tag_cache);
2777                 } else {
2778
2779                         /* do it the hard way */
2780
2781                         $tmp_result = db_query($link, $query);
2782
2783                         while ($tmp_line = db_fetch_assoc($tmp_result)) {
2784                                 array_push($tags, $tmp_line["tag_name"]);
2785                         }
2786
2787                         /* update the cache */
2788
2789                         $tags_str = db_escape_string(join(",", $tags));
2790
2791                         db_query($link, "UPDATE ttrss_user_entries
2792                                 SET tag_cache = '$tags_str' WHERE ref_id = '$id'
2793                                 AND owner_uid = $owner_uid");
2794                 }
2795
2796                 return $tags;
2797         }
2798
2799         function trim_array($array) {
2800                 $tmp = $array;
2801                 array_walk($tmp, 'trim');
2802                 return $tmp;
2803         }
2804
2805         function tag_is_valid($tag) {
2806                 if ($tag == '') return false;
2807                 if (preg_match("/^[0-9]*$/", $tag)) return false;
2808                 if (mb_strlen($tag) > 250) return false;
2809
2810                 if (function_exists('iconv')) {
2811                         $tag = iconv("utf-8", "utf-8", $tag);
2812                 }
2813
2814                 if (!$tag) return false;
2815
2816                 return true;
2817         }
2818
2819         function render_login_form($link, $form_id = 0) {
2820                 switch ($form_id) {
2821                 case 0:
2822                         require_once "login_form.php";
2823                         break;
2824                 case 1:
2825                         require_once "mobile/login_form.php";
2826                         break;
2827                 }
2828                 exit;
2829         }
2830
2831         // from http://developer.apple.com/internet/safari/faq.html
2832         function no_cache_incantation() {
2833                 header("Expires: Mon, 22 Dec 1980 00:00:00 GMT"); // Happy birthday to me :)
2834                 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
2835                 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); // HTTP/1.1
2836                 header("Cache-Control: post-check=0, pre-check=0", false);
2837                 header("Pragma: no-cache"); // HTTP/1.0
2838         }
2839
2840         function format_warning($msg, $id = "") {
2841                 global $link;
2842                 return "<div class=\"warning\" id=\"$id\">
2843                         <img src=\"images/sign_excl.svg\">$msg</div>";
2844         }
2845
2846         function format_notice($msg, $id = "") {
2847                 global $link;
2848                 return "<div class=\"notice\" id=\"$id\">
2849                         <img src=\"images/sign_info.svg\">$msg</div>";
2850         }
2851
2852         function format_error($msg, $id = "") {
2853                 global $link;
2854                 return "<div class=\"error\" id=\"$id\">
2855                         <img src=\"images/sign_excl.svg\">$msg</div>";
2856         }
2857
2858         function print_notice($msg) {
2859                 return print format_notice($msg);
2860         }
2861
2862         function print_warning($msg) {
2863                 return print format_warning($msg);
2864         }
2865
2866         function print_error($msg) {
2867                 return print format_error($msg);
2868         }
2869
2870
2871         function T_sprintf() {
2872                 $args = func_get_args();
2873                 return vsprintf(__(array_shift($args)), $args);
2874         }
2875
2876         function format_inline_player($link, $url, $ctype) {
2877
2878                 $entry = "";
2879
2880                 $url = htmlspecialchars($url);
2881
2882                 if (strpos($ctype, "audio/") === 0) {
2883
2884                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
2885                                 strpos($_SERVER['HTTP_USER_AGENT'], "Chrome") !== false ||
2886                                 strpos($_SERVER['HTTP_USER_AGENT'], "Safari") !== false )) {
2887
2888                                 $id = 'AUDIO-' . uniqid();
2889
2890                                 $entry .= "<audio id=\"$id\"\" controls style='display : none'>
2891                                         <source type=\"$ctype\" src=\"$url\"></source>
2892                                         </audio>";
2893
2894                                 $entry .= "<span onclick=\"player(this)\"
2895                                         title=\"".__("Click to play")."\" status=\"0\"
2896                                         class=\"player\" audio-id=\"$id\">".__("Play")."</span>";
2897
2898                         } else {
2899
2900                                 $entry .= "<object type=\"application/x-shockwave-flash\"
2901                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
2902                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
2903                                         <param name=\"movie\"
2904                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
2905                                         </object>";
2906                         }
2907
2908                         if ($entry) $entry .= "&nbsp; <a target=\"_blank\"
2909                                 href=\"$url\">" . basename($url) . "</a>";
2910
2911                         return $entry;
2912
2913                 }
2914
2915                 return "";
2916
2917 /*              $filename = substr($url, strrpos($url, "/")+1);
2918
2919                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
2920                         $filename . " (" . $ctype . ")" . "</a>"; */
2921
2922         }
2923
2924         function format_article($link, $id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
2925                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2926
2927                 $rv = array();
2928
2929                 $rv['id'] = $id;
2930
2931                 /* we can figure out feed_id from article id anyway, why do we
2932                  * pass feed_id here? let's ignore the argument :( */
2933
2934                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
2935                         WHERE ref_id = '$id'");
2936
2937                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
2938
2939                 $rv['feed_id'] = $feed_id;
2940
2941                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
2942
2943                 if ($mark_as_read) {
2944                         $result = db_query($link, "UPDATE ttrss_user_entries
2945                                 SET unread = false,last_read = NOW()
2946                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2947
2948                         ccache_update($link, $feed_id, $owner_uid);
2949                 }
2950
2951                 $result = db_query($link, "SELECT id,title,link,content,feed_id,comments,int_id,
2952                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
2953                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
2954                         (SELECT hide_images FROM ttrss_feeds WHERE id = feed_id) as hide_images,
2955                         num_comments,
2956                         tag_cache,
2957                         author,
2958                         orig_feed_id,
2959                         note,
2960                         cached_content
2961                         FROM ttrss_entries,ttrss_user_entries
2962                         WHERE   id = '$id' AND ref_id = id AND owner_uid = $owner_uid");
2963
2964                 if ($result) {
2965
2966                         $line = db_fetch_assoc($result);
2967
2968                         $tag_cache = $line["tag_cache"];
2969
2970                         $line["tags"] = get_article_tags($link, $id, $owner_uid, $line["tag_cache"]);
2971                         unset($line["tag_cache"]);
2972
2973                         $line["content"] = sanitize($link, $line["content"], false, $owner_uid, $line["site_url"]);
2974
2975                         global $pluginhost;
2976
2977                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_RENDER_ARTICLE) as $p) {
2978                                 $line = $p->hook_render_article($line);
2979                         }
2980
2981                         $num_comments = $line["num_comments"];
2982                         $entry_comments = "";
2983
2984                         if ($num_comments > 0) {
2985                                 if ($line["comments"]) {
2986                                         $comments_url = htmlspecialchars($line["comments"]);
2987                                 } else {
2988                                         $comments_url = htmlspecialchars($line["link"]);
2989                                 }
2990                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
2991                         } else {
2992                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
2993                                         $entry_comments = "<a target='_blank' href=\"".htmlspecialchars($line["comments"])."\">comments</a>";
2994                                 }
2995                         }
2996
2997                         if ($zoom_mode) {
2998                                 header("Content-Type: text/html");
2999                                 $rv['content'] .= "<html><head>
3000                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
3001                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
3002                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
3003                                         </head><body>";
3004                         }
3005
3006                         $title_escaped = htmlspecialchars($line['title']);
3007
3008                         $rv['content'] .= "<div id=\"PTITLE-FULL-$id\" style=\"display : none\">" .
3009                                 strip_tags($line['title']) . "</div>";
3010
3011                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
3012
3013                         $rv['content'] .= "<div class=\"postHeader\" id=\"POSTHDR-$id\">";
3014
3015                         $entry_author = $line["author"];
3016
3017                         if ($entry_author) {
3018                                 $entry_author = __(" - ") . $entry_author;
3019                         }
3020
3021                         $parsed_updated = make_local_datetime($link, $line["updated"], true,
3022                                 $owner_uid, true);
3023
3024                         $rv['content'] .= "<div class=\"postDate\">$parsed_updated</div>";
3025
3026                         if ($line["link"]) {
3027                                 $rv['content'] .= "<div class='postTitle'><a target='_blank'
3028                                         title=\"".htmlspecialchars($line['title'])."\"
3029                                         href=\"" .
3030                                         htmlspecialchars($line["link"]) . "\">" .
3031                                         $line["title"] .
3032                                         "<span class='author'>$entry_author</span></a></div>";
3033                         } else {
3034                                 $rv['content'] .= "<div class='postTitle'>" . $line["title"] . "$entry_author</div>";
3035                         }
3036
3037                         $tags_str = format_tags_string($line["tags"], $id);
3038                         $tags_str_full = join(", ", $line["tags"]);
3039
3040                         if (!$tags_str_full) $tags_str_full = __("no tags");
3041
3042                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
3043
3044                         $rv['content'] .= "<div class='postTags' style='float : right'>
3045                                 <img src='images/tag.png'
3046                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
3047
3048                         if (!$zoom_mode) {
3049                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
3050                                         <a title=\"".__('Edit tags for this article')."\"
3051                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
3052
3053                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
3054                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
3055                                         position=\"below\">$tags_str_full</div>";
3056
3057                                 global $pluginhost;
3058
3059                                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_ARTICLE_BUTTON) as $p) {
3060                                         $rv['content'] .= $p->hook_article_button($line);
3061                                 }
3062
3063
3064                         } else {
3065                                 $tags_str = strip_tags($tags_str);
3066                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
3067                         }
3068                         $rv['content'] .= "</div>";
3069                         $rv['content'] .= "<div clear='both'>$entry_comments</div>";
3070
3071                         if ($line["orig_feed_id"]) {
3072
3073                                 $tmp_result = db_query($link, "SELECT * FROM ttrss_archived_feeds
3074                                         WHERE id = ".$line["orig_feed_id"]);
3075
3076                                 if (db_num_rows($tmp_result) != 0) {
3077
3078                                         $rv['content'] .= "<div clear='both'>";
3079                                         $rv['content'] .= __("Originally from:");
3080
3081                                         $rv['content'] .= "&nbsp;";
3082
3083                                         $tmp_line = db_fetch_assoc($tmp_result);
3084
3085                                         $rv['content'] .= "<a target='_blank'
3086                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
3087                                                 $tmp_line['title'] . "</a>";
3088
3089                                         $rv['content'] .= "&nbsp;";
3090
3091                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3092                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.svg'></a>";
3093
3094                                         $rv['content'] .= "</div>";
3095                                 }
3096                         }
3097
3098                         $rv['content'] .= "</div>";
3099
3100                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3101                                 if ($line['note']) {
3102                                         $rv['content'] .= format_article_note($id, $line['note'], !$zoom_mode);
3103                                 }
3104                         $rv['content'] .= "</div>";
3105
3106                         $rv['content'] .= "<div class=\"postContent\">";
3107
3108                         // N-grams
3109
3110                         if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_RELATED_THRESHOLD')) {
3111
3112                                 $ngram_result = db_query($link, "SELECT id,title FROM
3113                                                 ttrss_entries,ttrss_user_entries
3114                                         WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
3115                                                 AND similarity(title, '$title_escaped') >= "._NGRAM_TITLE_RELATED_THRESHOLD."
3116                                                 AND title != '$title_escaped'
3117                                                 AND owner_uid = $owner_uid");
3118
3119                                 if (db_num_rows($ngram_result) > 0) {
3120                                         $rv['content'] .= "<div dojoType=\"dijit.form.DropDownButton\">".
3121                                                 "<span>" . __('Related')."</span>";
3122                                         $rv['content'] .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3123
3124                                         while ($nline = db_fetch_assoc($ngram_result)) {
3125                                                 $rv['content'] .= "<div onclick=\"hlOpenInNewTab(null,".$nline['id'].")\"
3126                                                         dojoType=\"dijit.MenuItem\">".$nline['title']."</div>";
3127
3128                                         }
3129                                         $rv['content'] .= "</div></div><br/";
3130                                 }
3131                         }
3132
3133                         $rv['content'] .= $line["content"];
3134
3135                         $rv['content'] .= format_article_enclosures($link, $id,
3136                                 $always_display_enclosures, $line["content"], $line["hide_images"]);
3137
3138                         $rv['content'] .= "</div>";
3139
3140                         $rv['content'] .= "</div>";
3141
3142                 }
3143
3144                 if ($zoom_mode) {
3145                         $rv['content'] .= "
3146                                 <div style=\"text-align : center\">
3147                                 <button onclick=\"return window.close()\">".
3148                                         __("Close this window")."</button></div>";
3149                         $rv['content'] .= "</body></html>";
3150                 }
3151
3152                 return $rv;
3153
3154         }
3155
3156         function print_checkpoint($n, $s) {
3157                 $ts = microtime(true);
3158                 echo sprintf("<!-- CP[$n] %.4f seconds -->", $ts - $s);
3159                 return $ts;
3160         }
3161
3162         function sanitize_tag($tag) {
3163                 $tag = trim($tag);
3164
3165                 $tag = mb_strtolower($tag, 'utf-8');
3166
3167                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3168
3169 //              $tag = str_replace('"', "", $tag);
3170 //              $tag = str_replace("+", " ", $tag);
3171                 $tag = str_replace("technorati tag: ", "", $tag);
3172
3173                 return $tag;
3174         }
3175
3176         function get_self_url_prefix() {
3177                 if (strrpos(SELF_URL_PATH, "/") === strlen(SELF_URL_PATH)-1) {
3178                         return substr(SELF_URL_PATH, 0, strlen(SELF_URL_PATH)-1);
3179                 } else {
3180                         return SELF_URL_PATH;
3181                 }
3182         }
3183
3184         /**
3185          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3186          *
3187          * @return string The Mozilla Firefox feed adding URL.
3188          */
3189         function add_feed_url() {
3190                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3191
3192                 $url_path = get_self_url_prefix() .
3193                         "/public.php?op=subscribe&feed_url=%s";
3194                 return $url_path;
3195         } // function add_feed_url
3196
3197         function encrypt_password($pass, $salt = '', $mode2 = false) {
3198                 if ($salt && $mode2) {
3199                         return "MODE2:" . hash('sha256', $salt . $pass);
3200                 } else if ($salt) {
3201                         return "SHA1X:" . sha1("$salt:$pass");
3202                 } else {
3203                         return "SHA1:" . sha1($pass);
3204                 }
3205         } // function encrypt_password
3206
3207         function load_filters($link, $feed_id, $owner_uid, $action_id = false) {
3208                 $filters = array();
3209
3210                 $cat_id = (int)getFeedCategory($link, $feed_id);
3211
3212                 $result = db_query($link, "SELECT * FROM ttrss_filters2 WHERE
3213                         owner_uid = $owner_uid AND enabled = true");
3214
3215                 $check_cats = join(",", array_merge(
3216                         getParentCategories($link, $cat_id, $owner_uid),
3217                         array($cat_id)));
3218
3219                 while ($line = db_fetch_assoc($result)) {
3220                         $filter_id = $line["id"];
3221
3222                         $result2 = db_query($link, "SELECT
3223                                 r.reg_exp, r.feed_id, r.cat_id, r.cat_filter, t.name AS type_name
3224                                 FROM ttrss_filters2_rules AS r,
3225                                 ttrss_filter_types AS t
3226                                 WHERE
3227                                         (cat_id IS NULL OR cat_id IN ($check_cats)) AND
3228                                         (feed_id IS NULL OR feed_id = '$feed_id') AND
3229                                         filter_type = t.id AND filter_id = '$filter_id'");
3230
3231                         $rules = array();
3232                         $actions = array();
3233
3234                         while ($rule_line = db_fetch_assoc($result2)) {
3235 #                               print_r($rule_line);
3236
3237                                 $rule = array();
3238                                 $rule["reg_exp"] = $rule_line["reg_exp"];
3239                                 $rule["type"] = $rule_line["type_name"];
3240
3241                                 array_push($rules, $rule);
3242                         }
3243
3244                         $result2 = db_query($link, "SELECT a.action_param,t.name AS type_name
3245                                 FROM ttrss_filters2_actions AS a,
3246                                 ttrss_filter_actions AS t
3247                                 WHERE
3248                                         action_id = t.id AND filter_id = '$filter_id'");
3249
3250                         while ($action_line = db_fetch_assoc($result2)) {
3251 #                               print_r($action_line);
3252
3253                                 $action = array();
3254                                 $action["type"] = $action_line["type_name"];
3255                                 $action["param"] = $action_line["action_param"];
3256
3257                                 array_push($actions, $action);
3258                         }
3259
3260
3261                         $filter = array();
3262                         $filter["match_any_rule"] = sql_bool_to_bool($line["match_any_rule"]);
3263                         $filter["rules"] = $rules;
3264                         $filter["actions"] = $actions;
3265
3266                         if (count($rules) > 0 && count($actions) > 0) {
3267                                 array_push($filters, $filter);
3268                         }
3269                 }
3270
3271                 return $filters;
3272         }
3273
3274         function get_score_pic($score) {
3275                 if ($score > 100) {
3276                         return "score_high.png";
3277                 } else if ($score > 0) {
3278                         return "score_half_high.png";
3279                 } else if ($score < -100) {
3280                         return "score_low.png";
3281                 } else if ($score < 0) {
3282                         return "score_half_low.png";
3283                 } else {
3284                         return "score_neutral.png";
3285                 }
3286         }
3287
3288         function feed_has_icon($id) {
3289                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3290         }
3291
3292         function init_connection($link) {
3293                 if ($link) {
3294
3295                         if (DB_TYPE == "pgsql") {
3296                                 pg_query($link, "set client_encoding = 'UTF-8'");
3297                                 pg_set_client_encoding("UNICODE");
3298                                 pg_query($link, "set datestyle = 'ISO, european'");
3299                                 pg_query($link, "set TIME ZONE 0");
3300                         } else {
3301                                 db_query($link, "SET time_zone = '+0:0'");
3302
3303                                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
3304                                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
3305                                 }
3306                         }
3307
3308                         global $pluginhost;
3309
3310                         $pluginhost = new PluginHost($link);
3311                         $pluginhost->load(PLUGINS, $pluginhost::KIND_ALL);
3312
3313                         return true;
3314                 } else {
3315                         print "Unable to connect to database:" . db_last_error();
3316                         return false;
3317                 }
3318         }
3319
3320         function format_tags_string($tags, $id) {
3321
3322                 $tags_str = "";
3323                 $tags_nolinks_str = "";
3324
3325                 $num_tags = 0;
3326
3327                 $tag_limit = 6;
3328
3329                 $formatted_tags = array();
3330
3331                 foreach ($tags as $tag) {
3332                         $num_tags++;
3333                         $tag_escaped = str_replace("'", "\\'", $tag);
3334
3335                         if (mb_strlen($tag) > 30) {
3336                                 $tag = truncate_string($tag, 30);
3337                         }
3338
3339                         $tag_str = "<a href=\"javascript:viewfeed('$tag_escaped')\">$tag</a>";
3340
3341                         array_push($formatted_tags, $tag_str);
3342
3343                         $tmp_tags_str = implode(", ", $formatted_tags);
3344
3345                         if ($num_tags == $tag_limit || mb_strlen($tmp_tags_str) > 150) {
3346                                 break;
3347                         }
3348                 }
3349
3350                 $tags_str = implode(", ", $formatted_tags);
3351
3352                 if ($num_tags < count($tags)) {
3353                         $tags_str .= ", &hellip;";
3354                 }
3355
3356                 if ($num_tags == 0) {
3357                         $tags_str = __("no tags");
3358                 }
3359
3360                 return $tags_str;
3361
3362         }
3363
3364         function format_article_labels($labels, $id) {
3365
3366                 $labels_str = "";
3367
3368                 foreach ($labels as $l) {
3369                         $labels_str .= sprintf("<span class='hlLabelRef'
3370                                 style='color : %s; background-color : %s'>%s</span>",
3371                                         $l[2], $l[3], $l[1]);
3372                         }
3373
3374                 return $labels_str;
3375
3376         }
3377
3378         function format_article_note($id, $note, $allow_edit = true) {
3379
3380                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
3381                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
3382                         ($allow_edit ? __('(edit note)') : "")."</div>$note</div>";
3383
3384                 return $str;
3385         }
3386
3387
3388         function get_feed_category($link, $feed_cat, $parent_cat_id = false) {
3389                 if ($parent_cat_id) {
3390                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3391                         $parent_insert = "'$parent_cat_id'";
3392                 } else {
3393                         $parent_qpart = "parent_cat IS NULL";
3394                         $parent_insert = "NULL";
3395                 }
3396
3397                 $result = db_query($link,
3398                         "SELECT id FROM ttrss_feed_categories
3399                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3400
3401                 if (db_num_rows($result) == 0) {
3402                         return false;
3403                 } else {
3404                         return db_fetch_result($result, 0, "id");
3405                 }
3406         }
3407
3408         function add_feed_category($link, $feed_cat, $parent_cat_id = false) {
3409
3410                 if (!$feed_cat) return false;
3411
3412                 db_query($link, "BEGIN");
3413
3414                 if ($parent_cat_id) {
3415                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3416                         $parent_insert = "'$parent_cat_id'";
3417                 } else {
3418                         $parent_qpart = "parent_cat IS NULL";
3419                         $parent_insert = "NULL";
3420                 }
3421
3422                 $result = db_query($link,
3423                         "SELECT id FROM ttrss_feed_categories
3424                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3425
3426                 if (db_num_rows($result) == 0) {
3427
3428                         $result = db_query($link,
3429                                 "INSERT INTO ttrss_feed_categories (owner_uid,title,parent_cat)
3430                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat', $parent_insert)");
3431
3432                         db_query($link, "COMMIT");
3433
3434                         return true;
3435                 }
3436
3437                 return false;
3438         }
3439
3440         function getArticleFeed($link, $id) {
3441                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3442                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3443
3444                 if (db_num_rows($result) != 0) {
3445                         return db_fetch_result($result, 0, "feed_id");
3446                 } else {
3447                         return 0;
3448                 }
3449         }
3450
3451         /**
3452          * Fixes incomplete URLs by prepending "http://".
3453          * Also replaces feed:// with http://, and
3454          * prepends a trailing slash if the url is a domain name only.
3455          *
3456          * @param string $url Possibly incomplete URL
3457          *
3458          * @return string Fixed URL.
3459          */
3460         function fix_url($url) {
3461                 if (strpos($url, '://') === false) {
3462                         $url = 'http://' . $url;
3463                 } else if (substr($url, 0, 5) == 'feed:') {
3464                         $url = 'http:' . substr($url, 5);
3465                 }
3466
3467                 //prepend slash if the URL has no slash in it
3468                 // "http://www.example" -> "http://www.example/"
3469                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
3470                         $url .= '/';
3471                 }
3472
3473                 if ($url != "http:///")
3474                         return $url;
3475                 else
3476                         return '';
3477         }
3478
3479         function validate_feed_url($url) {
3480                 $parts = parse_url($url);
3481
3482                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
3483
3484         }
3485
3486         function get_article_enclosures($link, $id) {
3487
3488                 $query = "SELECT * FROM ttrss_enclosures
3489                         WHERE post_id = '$id' AND content_url != ''";
3490
3491                 $rv = array();
3492
3493                 $result = db_query($link, $query);
3494
3495                 if (db_num_rows($result) > 0) {
3496                         while ($line = db_fetch_assoc($result)) {
3497                                 array_push($rv, $line);
3498                         }
3499                 }
3500
3501                 return $rv;
3502         }
3503
3504         function save_email_address($link, $email) {
3505                 // FIXME: implement persistent storage of emails
3506
3507                 if (!$_SESSION['stored_emails'])
3508                         $_SESSION['stored_emails'] = array();
3509
3510                 if (!in_array($email, $_SESSION['stored_emails']))
3511                         array_push($_SESSION['stored_emails'], $email);
3512         }
3513
3514
3515         function get_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
3516
3517                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3518
3519                 $sql_is_cat = bool_to_sql_bool($is_cat);
3520
3521                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
3522                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
3523                         AND owner_uid = " . $owner_uid);
3524
3525                 if (db_num_rows($result) == 1) {
3526                         return db_fetch_result($result, 0, "access_key");
3527                 } else {
3528                         $key = db_escape_string(sha1(uniqid(rand(), true)));
3529
3530                         $result = db_query($link, "INSERT INTO ttrss_access_keys
3531                                 (access_key, feed_id, is_cat, owner_uid)
3532                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
3533
3534                         return $key;
3535                 }
3536                 return false;
3537         }
3538
3539         function get_feeds_from_html($url, $content)
3540         {
3541                 $url     = fix_url($url);
3542                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
3543
3544                 libxml_use_internal_errors(true);
3545
3546                 $doc = new DOMDocument();
3547                 $doc->loadHTML($content);
3548                 $xpath = new DOMXPath($doc);
3549                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
3550                 $feedUrls = array();
3551                 foreach ($entries as $entry) {
3552                         if ($entry->hasAttribute('href')) {
3553                                 $title = $entry->getAttribute('title');
3554                                 if ($title == '') {
3555                                         $title = $entry->getAttribute('type');
3556                                 }
3557                                 $feedUrl = rewrite_relative_url(
3558                                         $baseUrl, $entry->getAttribute('href')
3559                                 );
3560                                 $feedUrls[$feedUrl] = $title;
3561                         }
3562                 }
3563                 return $feedUrls;
3564         }
3565
3566         function is_html($content) {
3567                 return preg_match("/<html|DOCTYPE html/i", substr($content, 0, 20)) !== 0;
3568         }
3569
3570         function url_is_html($url, $login = false, $pass = false) {
3571                 return is_html(fetch_file_contents($url, false, $login, $pass));
3572         }
3573
3574         function print_label_select($link, $name, $value, $attributes = "") {
3575
3576                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
3577                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
3578
3579                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
3580                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
3581
3582                 while ($line = db_fetch_assoc($result)) {
3583
3584                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
3585
3586                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
3587                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
3588
3589                 }
3590
3591 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
3592
3593                 print "</select>";
3594
3595
3596         }
3597
3598         function format_article_enclosures($link, $id, $always_display_enclosures,
3599                                         $article_content, $hide_images = false) {
3600
3601                 $result = get_article_enclosures($link, $id);
3602                 $rv = '';
3603
3604                 if (count($result) > 0) {
3605
3606                         $entries_html = array();
3607                         $entries = array();
3608                         $entries_inline = array();
3609
3610                         foreach ($result as $line) {
3611
3612                                 $url = $line["content_url"];
3613                                 $ctype = $line["content_type"];
3614
3615                                 if (!$ctype) $ctype = __("unknown type");
3616
3617                                 $filename = substr($url, strrpos($url, "/")+1);
3618
3619                                 $player = format_inline_player($link, $url, $ctype);
3620
3621                                 if ($player) array_push($entries_inline, $player);
3622
3623 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3624 #                                       $filename . " (" . $ctype . ")" . "</a>";
3625
3626                                 $entry = "<div onclick=\"window.open('".htmlspecialchars($url)."')\"
3627                                         dojoType=\"dijit.MenuItem\">$filename ($ctype)</div>";
3628
3629                                 array_push($entries_html, $entry);
3630
3631                                 $entry = array();
3632
3633                                 $entry["type"] = $ctype;
3634                                 $entry["filename"] = $filename;
3635                                 $entry["url"] = $url;
3636
3637                                 array_push($entries, $entry);
3638                         }
3639
3640                         if ($_SESSION['uid'] && !get_pref($link, "STRIP_IMAGES")) {
3641                                 if ($always_display_enclosures ||
3642                                                         !preg_match("/<img/i", $article_content)) {
3643
3644                                         foreach ($entries as $entry) {
3645
3646                                                 if (preg_match("/image/", $entry["type"]) ||
3647                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
3648
3649                                                                 if (!$hide_images) {
3650                                                                         $rv .= "<p><img
3651                                                                         alt=\"".htmlspecialchars($entry["filename"])."\"
3652                                                                         src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
3653                                                                 } else {
3654                                                                         $rv .= "<p><a target=\"_blank\"
3655                                                                         href=\"".htmlspecialchars($entry["url"])."\"
3656                                                                         >" .htmlspecialchars($entry["url"]) . "</a></p>";
3657
3658                                                                 }
3659                                                 }
3660                                         }
3661                                 }
3662                         }
3663
3664                         if (count($entries_inline) > 0) {
3665                                 $rv .= "<hr clear='both'/>";
3666                                 foreach ($entries_inline as $entry) { $rv .= $entry; };
3667                                 $rv .= "<hr clear='both'/>";
3668                         }
3669
3670                         $rv .= "<br/><div dojoType=\"dijit.form.DropDownButton\">".
3671                                 "<span>" . __('Attachments')."</span>";
3672                         $rv .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3673
3674                         foreach ($entries_html as $entry) { $rv .= $entry; };
3675
3676                         $rv .= "</div></div>";
3677                 }
3678
3679                 return $rv;
3680         }
3681
3682         function getLastArticleId($link) {
3683                 $result = db_query($link, "SELECT MAX(ref_id) AS id FROM ttrss_user_entries
3684                         WHERE owner_uid = " . $_SESSION["uid"]);
3685
3686                 if (db_num_rows($result) == 1) {
3687                         return db_fetch_result($result, 0, "id");
3688                 } else {
3689                         return -1;
3690                 }
3691         }
3692
3693         function build_url($parts) {
3694                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
3695         }
3696
3697         /**
3698          * Converts a (possibly) relative URL to a absolute one.
3699          *
3700          * @param string $url     Base URL (i.e. from where the document is)
3701          * @param string $rel_url Possibly relative URL in the document
3702          *
3703          * @return string Absolute URL
3704          */
3705         function rewrite_relative_url($url, $rel_url) {
3706                 if (strpos($rel_url, "magnet:") === 0) {
3707                         return $rel_url;
3708                 } else if (strpos($rel_url, "://") !== false) {
3709                         return $rel_url;
3710                 } else if (strpos($rel_url, "//") === 0) {
3711                         # protocol-relative URL (rare but they exist)
3712                         return $rel_url;
3713                 } else if (strpos($rel_url, "/") === 0)
3714                 {
3715                         $parts = parse_url($url);
3716                         $parts['path'] = $rel_url;
3717
3718                         return build_url($parts);
3719
3720                 } else {
3721                         $parts = parse_url($url);
3722                         if (!isset($parts['path'])) {
3723                                 $parts['path'] = '/';
3724                         }
3725                         $dir = $parts['path'];
3726                         if (substr($dir, -1) !== '/') {
3727                                 $dir = dirname($parts['path']);
3728                                 $dir !== '/' && $dir .= '/';
3729                         }
3730                         $parts['path'] = $dir . $rel_url;
3731
3732                         return build_url($parts);
3733                 }
3734         }
3735
3736         function sphinx_search($query, $offset = 0, $limit = 30) {
3737                 require_once 'lib/sphinxapi.php';
3738
3739                 $sphinxClient = new SphinxClient();
3740
3741                 $sphinxClient->SetServer('localhost', 9312);
3742                 $sphinxClient->SetConnectTimeout(1);
3743
3744                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
3745                         'feed_title' => 20));
3746
3747                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
3748                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
3749                 $sphinxClient->SetLimits($offset, $limit, 1000);
3750                 $sphinxClient->SetArrayResult(false);
3751                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
3752
3753                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
3754
3755                 $ids = array();
3756
3757                 if (is_array($result['matches'])) {
3758                         foreach (array_keys($result['matches']) as $int_id) {
3759                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
3760                                 array_push($ids, $ref_id);
3761                         }
3762                 }
3763
3764                 return $ids;
3765         }
3766
3767         function cleanup_tags($link, $days = 14, $limit = 1000) {
3768
3769                 if (DB_TYPE == "pgsql") {
3770                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
3771                 } else if (DB_TYPE == "mysql") {
3772                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
3773                 }
3774
3775                 $tags_deleted = 0;
3776
3777                 while ($limit > 0) {
3778                         $limit_part = 500;
3779
3780                         $query = "SELECT ttrss_tags.id AS id
3781                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
3782                                 WHERE post_int_id = int_id AND $interval_query AND
3783                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
3784
3785                         $result = db_query($link, $query);
3786
3787                         $ids = array();
3788
3789                         while ($line = db_fetch_assoc($result)) {
3790                                 array_push($ids, $line['id']);
3791                         }
3792
3793                         if (count($ids) > 0) {
3794                                 $ids = join(",", $ids);
3795                                 print ".";
3796
3797                                 $tmp_result = db_query($link, "DELETE FROM ttrss_tags WHERE id IN ($ids)");
3798                                 $tags_deleted += db_affected_rows($link, $tmp_result);
3799                         } else {
3800                                 break;
3801                         }
3802
3803                         $limit -= $limit_part;
3804                 }
3805
3806                 print "\n";
3807
3808                 return $tags_deleted;
3809         }
3810
3811         function print_user_stylesheet($link) {
3812                 $value = get_pref($link, 'USER_STYLESHEET');
3813
3814                 if ($value) {
3815                         print "<style type=\"text/css\">";
3816                         print str_replace("<br/>", "\n", $value);
3817                         print "</style>";
3818                 }
3819
3820         }
3821
3822         function rewrite_urls($html) {
3823                 libxml_use_internal_errors(true);
3824
3825                 $charset_hack = '<head>
3826                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
3827                 </head>';
3828
3829                 $doc = new DOMDocument();
3830                 $doc->loadHTML($charset_hack . $html);
3831                 $xpath = new DOMXPath($doc);
3832
3833                 $entries = $xpath->query('//*/text()');
3834
3835                 foreach ($entries as $entry) {
3836                         if (strstr($entry->wholeText, "://") !== false) {
3837                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
3838                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
3839
3840                                 if ($text != $entry->wholeText) {
3841                                         $cdoc = new DOMDocument();
3842                                         $cdoc->loadHTML($charset_hack . $text);
3843
3844
3845                                         foreach ($cdoc->childNodes as $cnode) {
3846                                                 $cnode = $doc->importNode($cnode, true);
3847
3848                                                 if ($cnode) {
3849                                                         $entry->parentNode->insertBefore($cnode);
3850                                                 }
3851                                         }
3852
3853                                         $entry->parentNode->removeChild($entry);
3854
3855                                 }
3856                         }
3857                 }
3858
3859                 $node = $doc->getElementsByTagName('body')->item(0);
3860
3861                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
3862                 if ($node)
3863                         return $doc->saveXML($node);
3864                 else
3865                         return $html;
3866         }
3867
3868         function filter_to_sql($link, $filter, $owner_uid) {
3869                 $query = array();
3870
3871                 if (DB_TYPE == "pgsql")
3872                         $reg_qpart = "~";
3873                 else
3874                         $reg_qpart = "REGEXP";
3875
3876                 foreach ($filter["rules"] AS $rule) {
3877                         $regexp_valid = preg_match('/' . $rule['reg_exp'] . '/',
3878                                 $rule['reg_exp']) !== FALSE;
3879
3880                         if ($regexp_valid) {
3881
3882                                 $rule['reg_exp'] = db_escape_string($rule['reg_exp']);
3883
3884                                 switch ($rule["type"]) {
3885                                         case "title":
3886                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3887                                                         $rule['reg_exp'] . "')";
3888                                                 break;
3889                                         case "content":
3890                                                 $qpart = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
3891                                                         $rule['reg_exp'] . "')";
3892                                                 break;
3893                                         case "both":
3894                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3895                                                         $rule['reg_exp'] . "') OR LOWER(" .
3896                                                         "ttrss_entries.content) $reg_qpart LOWER('" . $rule['reg_exp'] . "')";
3897                                                 break;
3898                                         case "tag":
3899                                                 $qpart = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
3900                                                         $rule['reg_exp'] . "')";
3901                                                 break;
3902                                         case "link":
3903                                                 $qpart = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
3904                                                         $rule['reg_exp'] . "')";
3905                                                 break;
3906                                         case "author":
3907                                                 $qpart = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
3908                                                         $rule['reg_exp'] . "')";
3909                                                 break;
3910                                 }
3911
3912                                 if (isset($rule["feed_id"]) && $rule["feed_id"] > 0) {
3913                                         $qpart .= " AND feed_id = " . db_escape_string($rule["feed_id"]);
3914                                 }
3915
3916                                 if (isset($rule["cat_id"])) {
3917
3918                                         if ($rule["cat_id"] > 0) {
3919                                                 $children = getChildCategories($link, $rule["cat_id"], $owner_uid);
3920                                                 array_push($children, $rule["cat_id"]);
3921
3922                                                 $children = join(",", $children);
3923
3924                                                 $cat_qpart = "cat_id IN ($children)";
3925                                         } else {
3926                                                 $cat_qpart = "cat_id IS NULL";
3927                                         }
3928
3929                                         $qpart .= " AND $cat_qpart";
3930                                 }
3931
3932                                 array_push($query, "($qpart)");
3933
3934                         }
3935                 }
3936
3937                 if (count($query) > 0) {
3938                         return "(" . join($filter["match_any_rule"] ? "OR" : "AND", $query) . ")";
3939                 } else {
3940                         return "(false)";
3941                 }
3942         }
3943
3944         if (!function_exists('gzdecode')) {
3945                 function gzdecode($string) { // no support for 2nd argument
3946                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
3947                                 base64_encode($string));
3948                 }
3949         }
3950
3951         function get_random_bytes($length) {
3952                 if (function_exists('openssl_random_pseudo_bytes')) {
3953                         return openssl_random_pseudo_bytes($length);
3954                 } else {
3955                         $output = "";
3956
3957                         for ($i = 0; $i < $length; $i++)
3958                                 $output .= chr(mt_rand(0, 255));
3959
3960                         return $output;
3961                 }
3962         }
3963
3964         function read_stdin() {
3965                 $fp = fopen("php://stdin", "r");
3966
3967                 if ($fp) {
3968                         $line = trim(fgets($fp));
3969                         fclose($fp);
3970                         return $line;
3971                 }
3972
3973                 return null;
3974         }
3975
3976         function tmpdirname($path, $prefix) {
3977                 // Use PHP's tmpfile function to create a temporary
3978                 // directory name. Delete the file and keep the name.
3979                 $tempname = tempnam($path,$prefix);
3980                 if (!$tempname)
3981                         return false;
3982
3983                 if (!unlink($tempname))
3984                         return false;
3985
3986        return $tempname;
3987         }
3988
3989         function getFeedCategory($link, $feed) {
3990                 $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
3991                         WHERE id = '$feed'");
3992
3993                 if (db_num_rows($result) > 0) {
3994                         return db_fetch_result($result, 0, "cat_id");
3995                 } else {
3996                         return false;
3997                 }
3998
3999         }
4000
4001         function implements_interface($class, $interface) {
4002                 return in_array($interface, class_implements($class));
4003         }
4004
4005         function geturl($url){
4006
4007                 (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');
4008
4009                 $curl = curl_init();
4010                 $header[0] = "Accept: text/xml,application/xml,application/xhtml+xml,";
4011                 $header[0] .= "text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5";
4012                 $header[] = "Cache-Control: max-age=0";
4013                 $header[] = "Connection: keep-alive";
4014                 $header[] = "Keep-Alive: 300";
4015                 $header[] = "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7";
4016                 $header[] = "Accept-Language: en-us,en;q=0.5";
4017                 $header[] = "Pragma: ";
4018
4019                 curl_setopt($curl, CURLOPT_URL, $url);
4020                 curl_setopt($curl, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20100101 Firefox/5.0 Firefox/5.0');
4021                 curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
4022                 curl_setopt($curl, CURLOPT_HEADER, true);
4023                 curl_setopt($curl, CURLOPT_REFERER, $url);
4024                 curl_setopt($curl, CURLOPT_ENCODING, 'gzip,deflate');
4025                 curl_setopt($curl, CURLOPT_AUTOREFERER, true);
4026                 curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
4027                 //curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); //CURLOPT_FOLLOWLOCATION Disabled...
4028                 curl_setopt($curl, CURLOPT_TIMEOUT, 60);
4029
4030                 $html = curl_exec($curl);
4031
4032                 $status = curl_getinfo($curl);
4033                 curl_close($curl);
4034
4035                 if($status['http_code']!=200){
4036                         if($status['http_code'] == 301 || $status['http_code'] == 302) {
4037                                 list($header) = explode("\r\n\r\n", $html, 2);
4038                                 $matches = array();
4039                                 preg_match("/(Location:|URI:)[^(\n)]*/", $header, $matches);
4040                                 $url = trim(str_replace($matches[1],"",$matches[0]));
4041                                 $url_parsed = parse_url($url);
4042                                 return (isset($url_parsed))? geturl($url, $referer):'';
4043                         }
4044                         $oline='';
4045                         foreach($status as $key=>$eline){$oline.='['.$key.']'.$eline.' ';}
4046                         $line =$oline." \r\n ".$url."\r\n-----------------\r\n";
4047 #                       $handle = @fopen('./curl.error.log', 'a');
4048 #                       fwrite($handle, $line);
4049                         return FALSE;
4050                 }
4051                 return $url;
4052         }
4053
4054         function get_minified_js($files) {
4055                 require_once 'lib/jshrink/Minifier.php';
4056
4057                 $rv = '';
4058
4059                 foreach ($files as $js) {
4060                         if (!isset($_GET['debug'])) {
4061                                 $cached_file = CACHE_DIR . "/js/$js.js";
4062
4063                                 if (file_exists($cached_file) &&
4064                                                 is_readable($cached_file) &&
4065                                                 filemtime($cached_file) >= filemtime("js/$js.js")) {
4066
4067                                         $rv .= file_get_contents($cached_file);
4068
4069                                 } else {
4070                                         $minified = JShrink\Minifier::minify(file_get_contents("js/$js.js"));
4071                                         file_put_contents($cached_file, $minified);
4072                                         $rv .= $minified;
4073                                 }
4074                         } else {
4075                                 $rv .= file_get_contents("js/$js.js");
4076                         }
4077                 }
4078
4079                 return $rv;
4080         }
4081
4082         function stylesheet_tag($filename) {
4083                 $timestamp = filemtime($filename);
4084
4085                 echo "<link rel=\"stylesheet\" type=\"text/css\" href=\"$filename?$timestamp\"/>\n";
4086         }
4087
4088         function javascript_tag($filename) {
4089                 $query = "";
4090
4091                 if (!(strpos($filename, "?") === FALSE)) {
4092                         $query = substr($filename, strpos($filename, "?")+1);
4093                         $filename = substr($filename, 0, strpos($filename, "?"));
4094                 }
4095
4096                 $timestamp = filemtime($filename);
4097
4098                 if ($query) $timestamp .= "&$query";
4099
4100                 echo "<script type=\"text/javascript\" charset=\"utf-8\" src=\"$filename?$timestamp\"></script>\n";
4101         }
4102
4103         function calculate_dep_timestamp() {
4104                 $files = array_merge(glob("js/*.js"), glob("*.css"));
4105
4106                 $max_ts = -1;
4107
4108                 foreach ($files as $file) {
4109                         if (filemtime($file) > $max_ts) $max_ts = filemtime($file);
4110                 }
4111
4112                 return $max_ts;
4113         }
4114
4115 ?>