include/functions.php

   1 <?php
   2         define('EXPECTED_CONFIG_VERSION', 26);
   3         define('SCHEMA_VERSION', 102);
   4
   5         $fetch_last_error = false;
   6         $pluginhost = false;
   7
   8         function __autoload($class) {
   9                 $class_file = str_replace("_", "/", strtolower(basename($class)));
  10
  11                 $file = dirname(__FILE__)."/../classes/$class_file.php";
  12
  13                 if (file_exists($file)) {
  14                         require $file;
  15                 }
  16
  17         }
  18
  19         mb_internal_encoding("UTF-8");
  20         date_default_timezone_set('UTC');
  21         if (defined('E_DEPRECATED')) {
  22                 error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
  23         } else {
  24                 error_reporting(E_ALL & ~E_NOTICE);
  25         }
  26
  27         require_once 'config.php';
  28
  29         if (DB_TYPE == "pgsql") {
  30                 define('SUBSTRING_FOR_DATE', 'SUBSTRING_FOR_DATE');
  31         } else {
  32                 define('SUBSTRING_FOR_DATE', 'SUBSTRING');
  33         }
  34
  35         define('THEME_VERSION_REQUIRED', 1.1);
  36
  37         /**
  38          * Return available translations names.
  39          *
  40          * @access public
  41          * @return array A array of available translations.
  42          */
  43         function get_translations() {
  44                 $tr = array(
  45                                         "auto"  => "Detect automatically",
  46                                         "ca_CA" => "Català",
  47                                         "en_US" => "English",
  48                                         "es_ES" => "Español",
  49                                         "de_DE" => "Deutsch",
  50                                         "fr_FR" => "Français",
  51                                         "hu_HU" => "Magyar (Hungarian)",
  52                                         "it_IT" => "Italiano",
  53                                         "ja_JP" => "日本語 (Japanese)",
  54                                         "nb_NO" => "Norwegian bokmål",
  55                                         "pl_PL" => "Polski",
  56                                         "ru_RU" => "Русский",
  57                                         "pt_BR" => "Portuguese/Brazil",
  58                                         "zh_CN" => "Simplified Chinese");
  59
  60                 return $tr;
  61         }
  62
  63         require_once "lib/accept-to-gettext.php";
  64         require_once "lib/gettext/gettext.inc";
  65
  66
  67         function startup_gettext() {
  68
  69                 # Get locale from Accept-Language header
  70                 $lang = al2gt(array_keys(get_translations()), "text/html");
  71
  72                 if (defined('_TRANSLATION_OVERRIDE_DEFAULT')) {
  73                         $lang = _TRANSLATION_OVERRIDE_DEFAULT;
  74                 }
  75
  76                 /* In login action of mobile version */
  77                 if ($_POST["language"] && defined('MOBILE_VERSION')) {
  78                         $lang = $_POST["language"];
  79                 } else {
  80                         $lang = $_SESSION["language"];
  81                 }
  82
  83                 if ($lang) {
  84                         if (defined('LC_MESSAGES')) {
  85                                 _setlocale(LC_MESSAGES, $lang);
  86                         } else if (defined('LC_ALL')) {
  87                                 _setlocale(LC_ALL, $lang);
  88                         }
  89
  90                         if (defined('MOBILE_VERSION')) {
  91                                 _bindtextdomain("messages", "../locale");
  92                         } else {
  93                                 _bindtextdomain("messages", "locale");
  94                         }
  95
  96                         _textdomain("messages");
  97                         _bind_textdomain_codeset("messages", "UTF-8");
  98                 }
  99         }
 100
 101         startup_gettext();
 102
 103         require_once 'db-prefs.php';
 104         require_once 'version.php';
 105         require_once 'ccache.php';
 106         require_once 'labels.php';
 107
 108         ini_set('user_agent', SELF_USER_AGENT);
 109
 110         require_once 'lib/pubsubhubbub/publisher.php';
 111         require_once 'lib/htmLawed.php';
 112
 113         $tz_offset = -1;
 114         $utc_tz = new DateTimeZone('UTC');
 115         $schema_version = false;
 116
 117         /**
 118          * Print a timestamped debug message.
 119          *
 120          * @param string $msg The debug message.
 121          * @return void
 122          */
 123         function _debug($msg) {
 124                 if (defined('QUIET') && QUIET) {
 125                         return;
 126                 }
 127                 $ts = strftime("%H:%M:%S", time());
 128                 if (function_exists('posix_getpid')) {
 129                         $ts = "$ts/" . posix_getpid();
 130                 }
 131                 print "[$ts] $msg\n";
 132         } // function _debug
 133
 134         /**
 135          * Purge a feed old posts.
 136          *
 137          * @param mixed $link A database connection.
 138          * @param mixed $feed_id The id of the purged feed.
 139          * @param mixed $purge_interval Olderness of purged posts.
 140          * @param boolean $debug Set to True to enable the debug. False by default.
 141          * @access public
 142          * @return void
 143          */
 144         function purge_feed($link, $feed_id, $purge_interval, $debug = false) {
 145
 146                 if (!$purge_interval) $purge_interval = feed_purge_interval($link, $feed_id);
 147
 148                 $rows = -1;
 149
 150                 $result = db_query($link,
 151                         "SELECT owner_uid FROM ttrss_feeds WHERE id = '$feed_id'");
 152
 153                 $owner_uid = false;
 154
 155                 if (db_num_rows($result) == 1) {
 156                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 157                 }
 158
 159                 if ($purge_interval == -1 || !$purge_interval) {
 160                         if ($owner_uid) {
 161                                 ccache_update($link, $feed_id, $owner_uid);
 162                         }
 163                         return;
 164                 }
 165
 166                 if (!$owner_uid) return;
 167
 168                 if (FORCE_ARTICLE_PURGE == 0) {
 169                         $purge_unread = get_pref($link, "PURGE_UNREAD_ARTICLES",
 170                                 $owner_uid, false);
 171                 } else {
 172                         $purge_unread = true;
 173                         $purge_interval = FORCE_ARTICLE_PURGE;
 174                 }
 175
 176                 if (!$purge_unread) $query_limit = " unread = false AND ";
 177
 178                 if (DB_TYPE == "pgsql") {
 179                         $pg_version = get_pgsql_version($link);
 180
 181                         if (preg_match("/^7\./", $pg_version) || preg_match("/^8\.0/", $pg_version)) {
 182
 183                                 $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 184                                         ttrss_entries.id = ref_id AND
 185                                         marked = false AND
 186                                         feed_id = '$feed_id' AND
 187                                         $query_limit
 188                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 189
 190                         } else {
 191
 192                                 $result = db_query($link, "DELETE FROM ttrss_user_entries
 193                                         USING ttrss_entries
 194                                         WHERE ttrss_entries.id = ref_id AND
 195                                         marked = false AND
 196                                         feed_id = '$feed_id' AND
 197                                         $query_limit
 198                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 199                         }
 200
 201                         $rows = pg_affected_rows($result);
 202
 203                 } else {
 204
 205 /*                      $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 206                                 marked = false AND feed_id = '$feed_id' AND
 207                                 (SELECT date_updated FROM ttrss_entries WHERE
 208                                         id = ref_id) < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)"); */
 209
 210                         $result = db_query($link, "DELETE FROM ttrss_user_entries
 211                                 USING ttrss_user_entries, ttrss_entries
 212                                 WHERE ttrss_entries.id = ref_id AND
 213                                 marked = false AND
 214                                 feed_id = '$feed_id' AND
 215                                 $query_limit
 216                                 ttrss_entries.date_updated < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)");
 217
 218                         $rows = mysql_affected_rows($link);
 219
 220                 }
 221
 222                 ccache_update($link, $feed_id, $owner_uid);
 223
 224                 if ($debug) {
 225                         _debug("Purged feed $feed_id ($purge_interval): deleted $rows articles");
 226                 }
 227         } // function purge_feed
 228
 229         function feed_purge_interval($link, $feed_id) {
 230
 231                 $result = db_query($link, "SELECT purge_interval, owner_uid FROM ttrss_feeds
 232                         WHERE id = '$feed_id'");
 233
 234                 if (db_num_rows($result) == 1) {
 235                         $purge_interval = db_fetch_result($result, 0, "purge_interval");
 236                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 237
 238                         if ($purge_interval == 0) $purge_interval = get_pref($link,
 239                                 'PURGE_OLD_DAYS', $owner_uid);
 240
 241                         return $purge_interval;
 242
 243                 } else {
 244                         return -1;
 245                 }
 246         }
 247
 248         function purge_orphans($link, $do_output = false) {
 249
 250                 // purge orphaned posts in main content table
 251                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
 252                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
 253
 254                 if ($do_output) {
 255                         $rows = db_affected_rows($link, $result);
 256                         _debug("Purged $rows orphaned posts.");
 257                 }
 258         }
 259
 260         function get_feed_update_interval($link, $feed_id) {
 261                 $result = db_query($link, "SELECT owner_uid, update_interval FROM
 262                         ttrss_feeds WHERE id = '$feed_id'");
 263
 264                 if (db_num_rows($result) == 1) {
 265                         $update_interval = db_fetch_result($result, 0, "update_interval");
 266                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 267
 268                         if ($update_interval != 0) {
 269                                 return $update_interval;
 270                         } else {
 271                                 return get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $owner_uid, false);
 272                         }
 273
 274                 } else {
 275                         return -1;
 276                 }
 277         }
 278
 279         function fetch_file_contents($url, $type = false, $login = false, $pass = false, $post_query = false) {
 280                 $login = urlencode($login);
 281                 $pass = urlencode($pass);
 282
 283                 global $fetch_last_error;
 284
 285                 if (function_exists('curl_init') && !ini_get("open_basedir")) {
 286                         $ch = curl_init($url);
 287
 288                         curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 15);
 289                         curl_setopt($ch, CURLOPT_TIMEOUT, 45);
 290                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
 291                         curl_setopt($ch, CURLOPT_MAXREDIRS, 20);
 292                         curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
 293                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 294                         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 295                         curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 296                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 297                         curl_setopt($ch, CURLOPT_ENCODING , "gzip");
 298
 299                         if ($post_query) {
 300                                 curl_setopt($ch, CURLOPT_POST, true);
 301                                 curl_setopt($ch, CURLOPT_POSTFIELDS, $post_query);
 302                         }
 303
 304                         if ($login && $pass)
 305                                 curl_setopt($ch, CURLOPT_USERPWD, "$login:$pass");
 306
 307                         $contents = @curl_exec($ch);
 308
 309                         if ($contents === false) {
 310                                 $fetch_last_error = curl_error($ch);
 311                                 curl_close($ch);
 312                                 return false;
 313                         }
 314
 315                         $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 316                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 317                         curl_close($ch);
 318
 319                         if ($http_code != 200 || $type && strpos($content_type, "$type") === false) {
 320                                 return false;
 321                         }
 322
 323                         return $contents;
 324                 } else {
 325                         if ($login && $pass ){
 326                                 $url_parts = array();
 327
 328                                 preg_match("/(^[^:]*):\/\/(.*)/", $url, $url_parts);
 329
 330                                 if ($url_parts[1] && $url_parts[2]) {
 331                                         $url = $url_parts[1] . "://$login:$pass@" . $url_parts[2];
 332                                 }
 333                         }
 334
 335                         $data = @file_get_contents($url);
 336
 337                         if (!$data && function_exists('error_get_last')) {
 338                                 $error = error_get_last();
 339                                 $fetch_last_error = $error["message"];
 340                         }
 341                         return $data;
 342                 }
 343
 344         }
 345
 346         /**
 347          * Try to determine the favicon URL for a feed.
 348          * adapted from wordpress favicon plugin by Jeff Minard (http://thecodepro.com/)
 349          * http://dev.wp-plugins.org/file/favatars/trunk/favatars.php
 350          *
 351          * @param string $url A feed or page URL
 352          * @access public
 353          * @return mixed The favicon URL, or false if none was found.
 354          */
 355         function get_favicon_url($url) {
 356
 357                 $favicon_url = false;
 358
 359                 if ($html = @fetch_file_contents($url)) {
 360
 361                         libxml_use_internal_errors(true);
 362
 363                         $doc = new DOMDocument();
 364                         $doc->loadHTML($html);
 365                         $xpath = new DOMXPath($doc);
 366
 367                         $base = $xpath->query('/html/head/base');
 368                         foreach ($base as $b) {
 369                                 $url = $b->getAttribute("href");
 370                                 break;
 371                         }
 372
 373                         $entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon"]');
 374                         if (count($entries) > 0) {
 375                                 foreach ($entries as $entry) {
 376                                         $favicon_url = rewrite_relative_url($url, $entry->getAttribute("href"));
 377                                         break;
 378                                 }
 379                         }
 380                 }
 381
 382                 if (!$favicon_url)
 383                         $favicon_url = rewrite_relative_url($url, "/favicon.ico");
 384
 385                 return $favicon_url;
 386         } // function get_favicon_url
 387
 388         function check_feed_favicon($site_url, $feed, $link) {
 389 #               print "FAVICON [$site_url]: $favicon_url\n";
 390
 391                 $icon_file = ICONS_DIR . "/$feed.ico";
 392
 393                 if (!file_exists($icon_file)) {
 394                         $favicon_url = get_favicon_url($site_url);
 395
 396                         if ($favicon_url) {
 397                                 // Limiting to "image" type misses those served with text/plain
 398                                 $contents = fetch_file_contents($favicon_url); // , "image");
 399
 400                                 if ($contents) {
 401                                         // Crude image type matching.
 402                                         // Patterns gleaned from the file(1) source code.
 403                                         if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
 404                                                 // 0       string  \000\000\001\000        MS Windows icon resource
 405                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
 406                                         }
 407                                         elseif (preg_match('/^GIF8/', $contents)) {
 408                                                 // 0       string          GIF8            GIF image data
 409                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
 410                                         }
 411                                         elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
 412                                                 // 0       string          \x89PNG\x0d\x0a\x1a\x0a         PNG image data
 413                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
 414                                         }
 415                                         elseif (preg_match('/^\xff\xd8/', $contents)) {
 416                                                 // 0       beshort         0xffd8          JPEG image data
 417                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
 418                                         }
 419                                         else {
 420                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
 421                                                 $contents = "";
 422                                         }
 423                                 }
 424
 425                                 if ($contents) {
 426                                         $fp = @fopen($icon_file, "w");
 427
 428                                         if ($fp) {
 429                                                 fwrite($fp, $contents);
 430                                                 fclose($fp);
 431                                                 chmod($icon_file, 0644);
 432                                         }
 433                                 }
 434                         }
 435                 }
 436         }
 437
 438         function print_select($id, $default, $values, $attributes = "") {
 439                 print "<select name=\"$id\" id=\"$id\" $attributes>";
 440                 foreach ($values as $v) {
 441                         if ($v == $default)
 442                                 $sel = "selected=\"1\"";
 443                          else
 444                                 $sel = "";
 445
 446                         print "<option value=\"$v\" $sel>$v</option>";
 447                 }
 448                 print "</select>";
 449         }
 450
 451         function print_select_hash($id, $default, $values, $attributes = "") {
 452                 print "<select name=\"$id\" id='$id' $attributes>";
 453                 foreach (array_keys($values) as $v) {
 454                         if ($v == $default)
 455                                 $sel = 'selected="selected"';
 456                          else
 457                                 $sel = "";
 458
 459                         print "<option $sel value=\"$v\">".$values[$v]."</option>";
 460                 }
 461
 462                 print "</select>";
 463         }
 464
 465         function getmicrotime() {
 466                 list($usec, $sec) = explode(" ",microtime());
 467                 return ((float)$usec + (float)$sec);
 468         }
 469
 470         function print_radio($id, $default, $true_is, $values, $attributes = "") {
 471                 foreach ($values as $v) {
 472
 473                         if ($v == $default)
 474                                 $sel = "checked";
 475                          else
 476                                 $sel = "";
 477
 478                         if ($v == $true_is) {
 479                                 $sel .= " value=\"1\"";
 480                         } else {
 481                                 $sel .= " value=\"0\"";
 482                         }
 483
 484                         print "<input class=\"noborder\" dojoType=\"dijit.form.RadioButton\"
 485                                 type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 486
 487                 }
 488         }
 489
 490         function initialize_user_prefs($link, $uid, $profile = false) {
 491
 492                 $uid = db_escape_string($uid);
 493
 494                 if (!$profile) {
 495                         $profile = "NULL";
 496                         $profile_qpart = "AND profile IS NULL";
 497                 } else {
 498                         $profile_qpart = "AND profile = '$profile'";
 499                 }
 500
 501                 if (get_schema_version($link) < 63) $profile_qpart = "";
 502
 503                 db_query($link, "BEGIN");
 504
 505                 $result = db_query($link, "SELECT pref_name,def_value FROM ttrss_prefs");
 506
 507                 $u_result = db_query($link, "SELECT pref_name
 508                         FROM ttrss_user_prefs WHERE owner_uid = '$uid' $profile_qpart");
 509
 510                 $active_prefs = array();
 511
 512                 while ($line = db_fetch_assoc($u_result)) {
 513                         array_push($active_prefs, $line["pref_name"]);
 514                 }
 515
 516                 while ($line = db_fetch_assoc($result)) {
 517                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 518 //                              print "adding " . $line["pref_name"] . "<br>";
 519
 520                                 if (get_schema_version($link) < 63) {
 521                                         db_query($link, "INSERT INTO ttrss_user_prefs
 522                                                 (owner_uid,pref_name,value) VALUES
 523                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 524
 525                                 } else {
 526                                         db_query($link, "INSERT INTO ttrss_user_prefs
 527                                                 (owner_uid,pref_name,value, profile) VALUES
 528                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."', $profile)");
 529                                 }
 530
 531                         }
 532                 }
 533
 534                 db_query($link, "COMMIT");
 535
 536         }
 537
 538         function get_ssl_certificate_id() {
 539                 if ($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"]) {
 540                         return sha1($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"] .
 541                                 $_SERVER["REDIRECT_SSL_CLIENT_V_START"] .
 542                                 $_SERVER["REDIRECT_SSL_CLIENT_V_END"] .
 543                                 $_SERVER["REDIRECT_SSL_CLIENT_S_DN"]);
 544                 }
 545                 return "";
 546         }
 547
 548         function authenticate_user($link, $login, $password, $check_only = false) {
 549
 550                 if (!SINGLE_USER_MODE) {
 551
 552                         $user_id = false;
 553
 554                         global $pluginhost;
 555                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_AUTH_USER) as $plugin) {
 556
 557                                 $user_id = (int) $plugin->authenticate($login, $password);
 558
 559                                 if ($user_id) {
 560                                         $_SESSION["auth_module"] = strtolower(get_class($plugin));
 561                                         break;
 562                                 }
 563                         }
 564
 565                         if ($user_id && !$check_only) {
 566                                 $_SESSION["uid"] = $user_id;
 567
 568                                 $result = db_query($link, "SELECT login,access_level,pwd_hash FROM ttrss_users
 569                                         WHERE id = '$user_id'");
 570
 571                                 $_SESSION["name"] = db_fetch_result($result, 0, "login");
 572                                 $_SESSION["access_level"] = db_fetch_result($result, 0, "access_level");
 573                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 574
 575                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 576                                         $_SESSION["uid"]);
 577
 578                                 $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 579                                 $_SESSION["pwd_hash"] = db_fetch_result($result, 0, "pwd_hash");
 580
 581                                 $_SESSION["last_version_check"] = time();
 582
 583                                 initialize_user_prefs($link, $_SESSION["uid"]);
 584
 585                                 return true;
 586                         }
 587
 588                         return false;
 589
 590                 } else {
 591
 592                         $_SESSION["uid"] = 1;
 593                         $_SESSION["name"] = "admin";
 594                         $_SESSION["access_level"] = 10;
 595
 596                         $_SESSION["hide_hello"] = true;
 597                         $_SESSION["hide_logout"] = true;
 598
 599                         $_SESSION["auth_module"] = false;
 600
 601                         if (!$_SESSION["csrf_token"]) {
 602                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 603                         }
 604
 605                         $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 606
 607                         initialize_user_prefs($link, $_SESSION["uid"]);
 608
 609                         return true;
 610                 }
 611         }
 612
 613         function make_password($length = 8) {
 614
 615                 $password = "";
 616                 $possible = "0123456789abcdfghjkmnpqrstvwxyzABCDFGHJKMNPQRSTVWXYZ";
 617
 618         $i = 0;
 619
 620                 while ($i < $length) {
 621                         $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 622
 623                         if (!strstr($password, $char)) {
 624                                 $password .= $char;
 625                                 $i++;
 626                         }
 627                 }
 628                 return $password;
 629         }
 630
 631         // this is called after user is created to initialize default feeds, labels
 632         // or whatever else
 633
 634         // user preferences are checked on every login, not here
 635
 636         function initialize_user($link, $uid) {
 637
 638                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 639                         values ('$uid', 'Tiny Tiny RSS: New Releases',
 640                         'http://tt-rss.org/releases.rss')");
 641
 642                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 643                         values ('$uid', 'Tiny Tiny RSS: Forum',
 644                                 'http://tt-rss.org/forum/rss.php')");
 645         }
 646
 647         function logout_user() {
 648                 session_destroy();
 649                 if (isset($_COOKIE[session_name()])) {
 650                    setcookie(session_name(), '', time()-42000, '/');
 651                 }
 652         }
 653
 654         function validate_csrf($csrf_token) {
 655                 return $csrf_token == $_SESSION['csrf_token'];
 656         }
 657
 658         function validate_session($link) {
 659                 if (SINGLE_USER_MODE) return true;
 660
 661                 $check_ip = $_SESSION['ip_address'];
 662
 663                 switch (SESSION_CHECK_ADDRESS) {
 664                 case 0:
 665                         $check_ip = '';
 666                         break;
 667                 case 1:
 668                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 669                         break;
 670                 case 2:
 671                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.'));
 672                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 673                         break;
 674                 };
 675
 676                 if ($check_ip && strpos($_SERVER['REMOTE_ADDR'], $check_ip) !== 0) {
 677                         $_SESSION["login_error_msg"] =
 678                                 __("Session failed to validate (incorrect IP)");
 679                         return false;
 680                 }
 681
 682                 if ($_SESSION["ref_schema_version"] != get_schema_version($link, true))
 683                         return false;
 684
 685                 if ($_SESSION["uid"]) {
 686
 687                         $result = db_query($link,
 688                                 "SELECT pwd_hash FROM ttrss_users WHERE id = '".$_SESSION["uid"]."'");
 689
 690                         $pwd_hash = db_fetch_result($result, 0, "pwd_hash");
 691
 692                         if ($pwd_hash != $_SESSION["pwd_hash"]) {
 693                                 return false;
 694                         }
 695                 }
 696
 697 /*              if ($_SESSION["cookie_lifetime"] && $_SESSION["uid"]) {
 698
 699                         //print_r($_SESSION);
 700
 701                         if (time() > $_SESSION["cookie_lifetime"]) {
 702                                 return false;
 703                         }
 704                 } */
 705
 706                 return true;
 707         }
 708
 709         function load_user_plugins($link, $owner_uid) {
 710                 if ($owner_uid) {
 711                         $plugins = get_pref($link, "_ENABLED_PLUGINS", $owner_uid);
 712
 713                         global $pluginhost;
 714                         $pluginhost->load($plugins, $pluginhost::KIND_USER, $owner_uid);
 715
 716                         if (get_schema_version($link) > 100) {
 717                                 $pluginhost->load_data();
 718                         }
 719                 }
 720         }
 721
 722         function login_sequence($link, $login_form = 0) {
 723                 $_SESSION["prefs_cache"] = false;
 724
 725                 if (SINGLE_USER_MODE) {
 726                         authenticate_user($link, "admin", null);
 727                         load_user_plugins($link, $_SESSION["uid"]);
 728                 } else {
 729                         if (!$_SESSION["uid"] || !validate_session($link)) {
 730
 731                                 if (AUTH_AUTO_LOGIN && authenticate_user($link, null, null)) {
 732                                     $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 733                                 } else {
 734                                          authenticate_user($link, null, null, true);
 735                                 }
 736
 737                                 if (!$_SESSION["uid"]) render_login_form($link, $login_form);
 738
 739                         } else {
 740                                 /* bump login timestamp */
 741                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 742                                         $_SESSION["uid"]);
 743                         }
 744
 745                         if ($_SESSION["uid"] && $_SESSION["language"] && SESSION_COOKIE_LIFETIME > 0) {
 746                                 setcookie("ttrss_lang", $_SESSION["language"],
 747                                         time() + SESSION_COOKIE_LIFETIME);
 748                         }
 749
 750                         if ($_SESSION["uid"]) {
 751                                 load_user_plugins($link, $_SESSION["uid"]);
 752                         }
 753                 }
 754         }
 755
 756         function truncate_string($str, $max_len, $suffix = '&hellip;') {
 757                 if (mb_strlen($str, "utf-8") > $max_len - 3) {
 758                         return mb_substr($str, 0, $max_len, "utf-8") . $suffix;
 759                 } else {
 760                         return $str;
 761                 }
 762         }
 763
 764         // Deprecated, TODO: remove
 765         function theme_image($link, $filename) {
 766                 return $filename;
 767         }
 768
 769         function convert_timestamp($timestamp, $source_tz, $dest_tz) {
 770
 771                 try {
 772                         $source_tz = new DateTimeZone($source_tz);
 773                 } catch (Exception $e) {
 774                         $source_tz = new DateTimeZone('UTC');
 775                 }
 776
 777                 try {
 778                         $dest_tz = new DateTimeZone($dest_tz);
 779                 } catch (Exception $e) {
 780                         $dest_tz = new DateTimeZone('UTC');
 781                 }
 782
 783                 $dt = new DateTime(date('Y-m-d H:i:s', $timestamp), $source_tz);
 784                 return $dt->format('U') + $dest_tz->getOffset($dt);
 785         }
 786
 787         function make_local_datetime($link, $timestamp, $long, $owner_uid = false,
 788                                         $no_smart_dt = false) {
 789
 790                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 791                 if (!$timestamp) $timestamp = '1970-01-01 0:00';
 792
 793                 global $utc_tz;
 794                 global $tz_offset;
 795
 796                 # We store date in UTC internally
 797                 $dt = new DateTime($timestamp, $utc_tz);
 798
 799                 if ($tz_offset == -1) {
 800
 801                         $user_tz_string = get_pref($link, 'USER_TIMEZONE', $owner_uid);
 802
 803                         try {
 804                                 $user_tz = new DateTimeZone($user_tz_string);
 805                         } catch (Exception $e) {
 806                                 $user_tz = $utc_tz;
 807                         }
 808
 809                         $tz_offset = $user_tz->getOffset($dt);
 810                 }
 811
 812                 $user_timestamp = $dt->format('U') + $tz_offset;
 813
 814                 if (!$no_smart_dt) {
 815                         return smart_date_time($link, $user_timestamp,
 816                                 $tz_offset, $owner_uid);
 817                 } else {
 818                         if ($long)
 819                                 $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 820                         else
 821                                 $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 822
 823                         return date($format, $user_timestamp);
 824                 }
 825         }
 826
 827         function smart_date_time($link, $timestamp, $tz_offset = 0, $owner_uid = false) {
 828                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 829
 830                 if (date("Y.m.d", $timestamp) == date("Y.m.d", time() + $tz_offset)) {
 831                         return date("G:i", $timestamp);
 832                 } else if (date("Y", $timestamp) == date("Y", time() + $tz_offset)) {
 833                         $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 834                         return date($format, $timestamp);
 835                 } else {
 836                         $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 837                         return date($format, $timestamp);
 838                 }
 839         }
 840
 841         function sql_bool_to_bool($s) {
 842                 if ($s == "t" || $s == "1" || $s == "true") {
 843                         return true;
 844                 } else {
 845                         return false;
 846                 }
 847         }
 848
 849         function bool_to_sql_bool($s) {
 850                 if ($s) {
 851                         return "true";
 852                 } else {
 853                         return "false";
 854                 }
 855         }
 856
 857         // Session caching removed due to causing wrong redirects to upgrade
 858         // script when get_schema_version() is called on an obsolete session
 859         // created on a previous schema version.
 860         function get_schema_version($link, $nocache = false) {
 861                 global $schema_version;
 862
 863                 if (!$schema_version) {
 864                         $result = db_query($link, "SELECT schema_version FROM ttrss_version");
 865                         $version = db_fetch_result($result, 0, "schema_version");
 866                         $schema_version = $version;
 867                         return $version;
 868                 } else {
 869                         return $schema_version;
 870                 }
 871         }
 872
 873         function sanity_check($link) {
 874                 require_once 'errors.php';
 875
 876                 $error_code = 0;
 877                 $schema_version = get_schema_version($link, true);
 878
 879                 if ($schema_version != SCHEMA_VERSION) {
 880                         $error_code = 5;
 881                 }
 882
 883                 if (DB_TYPE == "mysql") {
 884                         $result = db_query($link, "SELECT true", false);
 885                         if (db_num_rows($result) != 1) {
 886                                 $error_code = 10;
 887                         }
 888                 }
 889
 890                 if (db_escape_string("testTEST") != "testTEST") {
 891                         $error_code = 12;
 892                 }
 893
 894                 return array("code" => $error_code, "message" => $ERRORS[$error_code]);
 895         }
 896
 897         function file_is_locked($filename) {
 898                 if (function_exists('flock')) {
 899                         $fp = @fopen(LOCK_DIRECTORY . "/$filename", "r");
 900                         if ($fp) {
 901                                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 902                                         flock($fp, LOCK_UN);
 903                                         fclose($fp);
 904                                         return false;
 905                                 }
 906                                 fclose($fp);
 907                                 return true;
 908                         } else {
 909                                 return false;
 910                         }
 911                 }
 912                 return true; // consider the file always locked and skip the test
 913         }
 914
 915         function make_lockfile($filename) {
 916                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
 917
 918                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 919                         if (function_exists('posix_getpid')) {
 920                                 fwrite($fp, posix_getpid() . "\n");
 921                         }
 922                         return $fp;
 923                 } else {
 924                         return false;
 925                 }
 926         }
 927
 928         function make_stampfile($filename) {
 929                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
 930
 931                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 932                         fwrite($fp, time() . "\n");
 933                         flock($fp, LOCK_UN);
 934                         fclose($fp);
 935                         return true;
 936                 } else {
 937                         return false;
 938                 }
 939         }
 940
 941         function sql_random_function() {
 942                 if (DB_TYPE == "mysql") {
 943                         return "RAND()";
 944                 } else {
 945                         return "RANDOM()";
 946                 }
 947         }
 948
 949         function catchup_feed($link, $feed, $cat_view, $owner_uid = false, $max_id = false) {
 950
 951                         if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 952
 953                         //if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
 954
 955                         $ref_check_qpart = ($max_id &&
 956                                 !get_pref($link, 'REVERSE_HEADLINES')) ? "ref_id <= '$max_id'" : "true";
 957
 958                         if (is_numeric($feed)) {
 959                                 if ($cat_view) {
 960
 961                                         if ($feed >= 0) {
 962
 963                                                 if ($feed > 0) {
 964                                                         $children = getChildCategories($link, $feed, $owner_uid);
 965                                                         array_push($children, $feed);
 966
 967                                                         $children = join(",", $children);
 968
 969                                                         $cat_qpart = "cat_id IN ($children)";
 970                                                 } else {
 971                                                         $cat_qpart = "cat_id IS NULL";
 972                                                 }
 973
 974                                                 db_query($link, "UPDATE ttrss_user_entries
 975                                                         SET unread = false,last_read = NOW()
 976                                                         WHERE feed_id IN (SELECT id FROM ttrss_feeds WHERE $cat_qpart)
 977                                                         AND $ref_check_qpart
 978                                                         AND owner_uid = $owner_uid");
 979
 980                                         } else if ($feed == -2) {
 981
 982                                                 db_query($link, "UPDATE ttrss_user_entries
 983                                                         SET unread = false,last_read = NOW() WHERE (SELECT COUNT(*)
 984                                                                 FROM ttrss_user_labels2 WHERE article_id = ref_id) > 0
 985                                                                 AND $ref_check_qpart
 986                                                                 AND unread = true AND owner_uid = $owner_uid");
 987                                         }
 988
 989                                 } else if ($feed > 0) {
 990
 991                                         db_query($link, "UPDATE ttrss_user_entries
 992                                                         SET unread = false,last_read = NOW()
 993                                                         WHERE feed_id = '$feed'
 994                                                         AND $ref_check_qpart
 995                                                         AND owner_uid = $owner_uid");
 996
 997                                 } else if ($feed < 0 && $feed > -10) { // special, like starred
 998
 999                                         if ($feed == -1) {
1000                                                 db_query($link, "UPDATE ttrss_user_entries
1001                                                         SET unread = false,last_read = NOW()
1002                                                         WHERE marked = true
1003                                                         AND $ref_check_qpart
1004                                                         AND owner_uid = $owner_uid");
1005                                         }
1006
1007                                         if ($feed == -2) {
1008                                                 db_query($link, "UPDATE ttrss_user_entries
1009                                                         SET unread = false,last_read = NOW()
1010                                                         WHERE published = true
1011                                                         AND $ref_check_qpart
1012                                                         AND owner_uid = $owner_uid");
1013                                         }
1014
1015                                         if ($feed == -3) {
1016
1017                                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE");
1018
1019                                                 if (DB_TYPE == "pgsql") {
1020                                                         $match_part = "updated > NOW() - INTERVAL '$intl hour' ";
1021                                                 } else {
1022                                                         $match_part = "updated > DATE_SUB(NOW(),
1023                                                                 INTERVAL $intl HOUR) ";
1024                                                 }
1025
1026                                                 $result = db_query($link, "SELECT id FROM ttrss_entries,
1027                                                         ttrss_user_entries WHERE $match_part AND
1028                                                         unread = true AND
1029                                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
1030                                                         owner_uid = $owner_uid");
1031
1032                                                 $affected_ids = array();
1033
1034                                                 while ($line = db_fetch_assoc($result)) {
1035                                                         array_push($affected_ids, $line["id"]);
1036                                                 }
1037
1038                                                 catchupArticlesById($link, $affected_ids, 0);
1039                                         }
1040
1041                                         if ($feed == -4) {
1042                                                 db_query($link, "UPDATE ttrss_user_entries
1043                                                         SET unread = false,last_read = NOW()
1044                                                         WHERE $ref_check_qpart AND owner_uid = $owner_uid");
1045                                         }
1046
1047                                 } else if ($feed < -10) { // label
1048
1049                                         $label_id = -$feed - 11;
1050
1051                                         db_query($link, "UPDATE ttrss_user_entries, ttrss_user_labels2
1052                                                 SET unread = false, last_read = NOW()
1053                                                         WHERE label_id = '$label_id' AND unread = true
1054                                                         AND $ref_check_qpart
1055                                                         AND owner_uid = '$owner_uid' AND ref_id = article_id");
1056
1057                                 }
1058
1059                                 ccache_update($link, $feed, $owner_uid, $cat_view);
1060
1061                         } else { // tag
1062                                 db_query($link, "BEGIN");
1063
1064                                 $tag_name = db_escape_string($feed);
1065
1066                                 $result = db_query($link, "SELECT post_int_id FROM ttrss_tags
1067                                         WHERE tag_name = '$tag_name' AND owner_uid = $owner_uid");
1068
1069                                 while ($line = db_fetch_assoc($result)) {
1070                                         db_query($link, "UPDATE ttrss_user_entries SET
1071                                                 unread = false, last_read = NOW()
1072                                                 WHERE $ref_check_qpart AND int_id = " . $line["post_int_id"]);
1073                                 }
1074                                 db_query($link, "COMMIT");
1075                         }
1076         }
1077
1078         function getAllCounters($link, $omode = "flc", $active_feed = false) {
1079
1080                 if (!$omode) $omode = "flc";
1081
1082                 $data = getGlobalCounters($link);
1083
1084                 $data = array_merge($data, getVirtCounters($link));
1085
1086                 if (strchr($omode, "l")) $data = array_merge($data, getLabelCounters($link));
1087                 if (strchr($omode, "f")) $data = array_merge($data, getFeedCounters($link, $active_feed));
1088                 if (strchr($omode, "t")) $data = array_merge($data, getTagCounters($link));
1089                 if (strchr($omode, "c")) $data = array_merge($data, getCategoryCounters($link));
1090
1091                 return $data;
1092         }
1093
1094         function getCategoryTitle($link, $cat_id) {
1095
1096                 if ($cat_id == -1) {
1097                         return __("Special");
1098                 } else if ($cat_id == -2) {
1099                         return __("Labels");
1100                 } else {
1101
1102                         $result = db_query($link, "SELECT title FROM ttrss_feed_categories WHERE
1103                                 id = '$cat_id'");
1104
1105                         if (db_num_rows($result) == 1) {
1106                                 return db_fetch_result($result, 0, "title");
1107                         } else {
1108                                 return __("Uncategorized");
1109                         }
1110                 }
1111         }
1112
1113
1114         function getCategoryCounters($link) {
1115                 $ret_arr = array();
1116
1117                 /* Labels category */
1118
1119                 $cv = array("id" => -2, "kind" => "cat",
1120                         "counter" => getCategoryUnread($link, -2));
1121
1122                 array_push($ret_arr, $cv);
1123
1124                 $result = db_query($link, "SELECT id AS cat_id, value AS unread,
1125                         (SELECT COUNT(id) FROM ttrss_feed_categories AS c2
1126                                 WHERE c2.parent_cat = ttrss_feed_categories.id) AS num_children
1127                         FROM ttrss_feed_categories, ttrss_cat_counters_cache
1128                         WHERE ttrss_cat_counters_cache.feed_id = id AND
1129                         ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid AND
1130                         ttrss_feed_categories.owner_uid = " . $_SESSION["uid"]);
1131
1132                 while ($line = db_fetch_assoc($result)) {
1133                         $line["cat_id"] = (int) $line["cat_id"];
1134
1135                         if ($line["num_children"] > 0) {
1136                                 $child_counter = getCategoryChildrenUnread($link, $line["cat_id"], $_SESSION["uid"]);
1137                         } else {
1138                                 $child_counter = 0;
1139                         }
1140
1141                         $cv = array("id" => $line["cat_id"], "kind" => "cat",
1142                                 "counter" => $line["unread"] + $child_counter);
1143
1144                         array_push($ret_arr, $cv);
1145                 }
1146
1147                 /* Special case: NULL category doesn't actually exist in the DB */
1148
1149                 $cv = array("id" => 0, "kind" => "cat",
1150                         "counter" => (int) ccache_find($link, 0, $_SESSION["uid"], true));
1151
1152                 array_push($ret_arr, $cv);
1153
1154                 return $ret_arr;
1155         }
1156
1157         // only accepts real cats (>= 0)
1158         function getCategoryChildrenUnread($link, $cat, $owner_uid = false) {
1159                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1160
1161                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories WHERE parent_cat = '$cat'
1162                                 AND owner_uid = $owner_uid");
1163
1164                 $unread = 0;
1165
1166                 while ($line = db_fetch_assoc($result)) {
1167                         $unread += getCategoryUnread($link, $line["id"], $owner_uid);
1168                         $unread += getCategoryChildrenUnread($link, $line["id"], $owner_uid);
1169                 }
1170
1171                 return $unread;
1172         }
1173
1174         function getCategoryUnread($link, $cat, $owner_uid = false) {
1175
1176                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1177
1178                 if ($cat >= 0) {
1179
1180                         if ($cat != 0) {
1181                                 $cat_query = "cat_id = '$cat'";
1182                         } else {
1183                                 $cat_query = "cat_id IS NULL";
1184                         }
1185
1186                         $result = db_query($link, "SELECT id FROM ttrss_feeds WHERE $cat_query
1187                                         AND owner_uid = " . $owner_uid);
1188
1189                         $cat_feeds = array();
1190                         while ($line = db_fetch_assoc($result)) {
1191                                 array_push($cat_feeds, "feed_id = " . $line["id"]);
1192                         }
1193
1194                         if (count($cat_feeds) == 0) return 0;
1195
1196                         $match_part = implode(" OR ", $cat_feeds);
1197
1198                         $result = db_query($link, "SELECT COUNT(int_id) AS unread
1199                                 FROM ttrss_user_entries
1200                                 WHERE   unread = true AND ($match_part)
1201                                 AND owner_uid = " . $owner_uid);
1202
1203                         $unread = 0;
1204
1205                         # this needs to be rewritten
1206                         while ($line = db_fetch_assoc($result)) {
1207                                 $unread += $line["unread"];
1208                         }
1209
1210                         return $unread;
1211                 } else if ($cat == -1) {
1212                         return getFeedUnread($link, -1) + getFeedUnread($link, -2) + getFeedUnread($link, -3) + getFeedUnread($link, 0);
1213                 } else if ($cat == -2) {
1214
1215                         $result = db_query($link, "
1216                                 SELECT COUNT(unread) AS unread FROM
1217                                         ttrss_user_entries, ttrss_user_labels2
1218                                 WHERE article_id = ref_id AND unread = true
1219                                         AND ttrss_user_entries.owner_uid = '$owner_uid'");
1220
1221                         $unread = db_fetch_result($result, 0, "unread");
1222
1223                         return $unread;
1224
1225                 }
1226         }
1227
1228         function getFeedUnread($link, $feed, $is_cat = false) {
1229                 return getFeedArticles($link, $feed, $is_cat, true, $_SESSION["uid"]);
1230         }
1231
1232         function getLabelUnread($link, $label_id, $owner_uid = false) {
1233                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1234
1235                 $result = db_query($link, "SELECT COUNT(ref_id) AS unread FROM ttrss_user_entries, ttrss_user_labels2
1236                         WHERE owner_uid = '$owner_uid' AND unread = true AND label_id = '$label_id' AND article_id = ref_id");
1237
1238                 if (db_num_rows($result) != 0) {
1239                         return db_fetch_result($result, 0, "unread");
1240                 } else {
1241                         return 0;
1242                 }
1243         }
1244
1245         function getFeedArticles($link, $feed, $is_cat = false, $unread_only = false,
1246                 $owner_uid = false) {
1247
1248                 $n_feed = (int) $feed;
1249                 $need_entries = false;
1250
1251                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1252
1253                 if ($unread_only) {
1254                         $unread_qpart = "unread = true";
1255                 } else {
1256                         $unread_qpart = "true";
1257                 }
1258
1259                 if ($is_cat) {
1260                         return getCategoryUnread($link, $n_feed, $owner_uid);
1261                 } else if ($n_feed == -6) {
1262                         return 0;
1263                 } else if ($feed != "0" && $n_feed == 0) {
1264
1265                         $feed = db_escape_string($feed);
1266
1267                         $result = db_query($link, "SELECT SUM((SELECT COUNT(int_id)
1268                                 FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1269                                         AND ref_id = id AND $unread_qpart)) AS count FROM ttrss_tags
1270                                 WHERE owner_uid = $owner_uid AND tag_name = '$feed'");
1271                         return db_fetch_result($result, 0, "count");
1272
1273                 } else if ($n_feed == -1) {
1274                         $match_part = "marked = true";
1275                 } else if ($n_feed == -2) {
1276                         $match_part = "published = true";
1277                 } else if ($n_feed == -3) {
1278                         $match_part = "unread = true AND score >= 0";
1279
1280                         $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
1281
1282                         if (DB_TYPE == "pgsql") {
1283                                 $match_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
1284                         } else {
1285                                 $match_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
1286                         }
1287
1288                         $need_entries = true;
1289
1290                 } else if ($n_feed == -4) {
1291                         $match_part = "true";
1292                 } else if ($n_feed >= 0) {
1293
1294                         if ($n_feed != 0) {
1295                                 $match_part = "feed_id = '$n_feed'";
1296                         } else {
1297                                 $match_part = "feed_id IS NULL";
1298                         }
1299
1300                 } else if ($feed < -10) {
1301
1302                         $label_id = -$feed - 11;
1303
1304                         return getLabelUnread($link, $label_id, $owner_uid);
1305
1306                 }
1307
1308                 if ($match_part) {
1309
1310                         if ($need_entries) {
1311                                 $from_qpart = "ttrss_user_entries,ttrss_entries";
1312                                 $from_where = "ttrss_entries.id = ttrss_user_entries.ref_id AND";
1313                         } else {
1314                                 $from_qpart = "ttrss_user_entries";
1315                         }
1316
1317                         $query = "SELECT count(int_id) AS unread
1318                                 FROM $from_qpart WHERE
1319                                 $unread_qpart AND $from_where ($match_part) AND ttrss_user_entries.owner_uid = $owner_uid";
1320
1321                         //echo "[$feed/$query]\n";
1322
1323                         $result = db_query($link, $query);
1324
1325                 } else {
1326
1327                         $result = db_query($link, "SELECT COUNT(post_int_id) AS unread
1328                                 FROM ttrss_tags,ttrss_user_entries,ttrss_entries
1329                                 WHERE tag_name = '$feed' AND post_int_id = int_id AND ref_id = ttrss_entries.id
1330                                 AND $unread_qpart AND ttrss_tags.owner_uid = " . $owner_uid);
1331                 }
1332
1333                 $unread = db_fetch_result($result, 0, "unread");
1334
1335                 return $unread;
1336         }
1337
1338         function getGlobalUnread($link, $user_id = false) {
1339
1340                 if (!$user_id) {
1341                         $user_id = $_SESSION["uid"];
1342                 }
1343
1344                 $result = db_query($link, "SELECT SUM(value) AS c_id FROM ttrss_counters_cache
1345                         WHERE owner_uid = '$user_id' AND feed_id > 0");
1346
1347                 $c_id = db_fetch_result($result, 0, "c_id");
1348
1349                 return $c_id;
1350         }
1351
1352         function getGlobalCounters($link, $global_unread = -1) {
1353                 $ret_arr = array();
1354
1355                 if ($global_unread == -1) {
1356                         $global_unread = getGlobalUnread($link);
1357                 }
1358
1359                 $cv = array("id" => "global-unread",
1360                         "counter" => (int) $global_unread);
1361
1362                 array_push($ret_arr, $cv);
1363
1364                 $result = db_query($link, "SELECT COUNT(id) AS fn FROM
1365                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1366
1367                 $subscribed_feeds = db_fetch_result($result, 0, "fn");
1368
1369                 $cv = array("id" => "subscribed-feeds",
1370                         "counter" => (int) $subscribed_feeds);
1371
1372                 array_push($ret_arr, $cv);
1373
1374                 return $ret_arr;
1375         }
1376
1377         function getTagCounters($link) {
1378
1379                 $ret_arr = array();
1380
1381                 $result = db_query($link, "SELECT tag_name,SUM((SELECT COUNT(int_id)
1382                         FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1383                                 AND ref_id = id AND unread = true)) AS count FROM ttrss_tags
1384                                 WHERE owner_uid = ".$_SESSION['uid']." GROUP BY tag_name
1385                                 ORDER BY count DESC LIMIT 55");
1386
1387                 $tags = array();
1388
1389                 while ($line = db_fetch_assoc($result)) {
1390                         $tags[$line["tag_name"]] += $line["count"];
1391                 }
1392
1393                 foreach (array_keys($tags) as $tag) {
1394                         $unread = $tags[$tag];
1395                         $tag = htmlspecialchars($tag);
1396
1397                         $cv = array("id" => $tag,
1398                                 "kind" => "tag",
1399                                 "counter" => $unread);
1400
1401                         array_push($ret_arr, $cv);
1402                 }
1403
1404                 return $ret_arr;
1405         }
1406
1407         function getVirtCounters($link) {
1408
1409                 $ret_arr = array();
1410
1411                 for ($i = 0; $i >= -4; $i--) {
1412
1413                         $count = getFeedUnread($link, $i);
1414
1415                         $cv = array("id" => $i,
1416                                 "counter" => (int) $count);
1417
1418 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1419 //                              $cv["xmsg"] = getFeedArticles($link, $i)." ".__("total");
1420
1421                         array_push($ret_arr, $cv);
1422                 }
1423
1424                 return $ret_arr;
1425         }
1426
1427         function getLabelCounters($link, $descriptions = false) {
1428
1429                 $ret_arr = array();
1430
1431                 $owner_uid = $_SESSION["uid"];
1432
1433                 $result = db_query($link, "SELECT id, caption FROM ttrss_labels2
1434                         WHERE owner_uid = '$owner_uid'");
1435
1436                 while ($line = db_fetch_assoc($result)) {
1437
1438                         $id = -$line["id"] - 11;
1439
1440                         $label_name = $line["caption"];
1441                         $count = getFeedUnread($link, $id);
1442
1443                         $cv = array("id" => $id,
1444                                 "counter" => (int) $count);
1445
1446                         if ($descriptions)
1447                                 $cv["description"] = $label_name;
1448
1449 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1450 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1451
1452                         array_push($ret_arr, $cv);
1453                 }
1454
1455                 return $ret_arr;
1456         }
1457
1458         function getFeedCounters($link, $active_feed = false) {
1459
1460                 $ret_arr = array();
1461
1462                 $query = "SELECT ttrss_feeds.id,
1463                                 ttrss_feeds.title,
1464                                 ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
1465                                 last_error, value AS count
1466                         FROM ttrss_feeds, ttrss_counters_cache
1467                         WHERE ttrss_feeds.owner_uid = ".$_SESSION["uid"]."
1468                                 AND ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid
1469                                 AND ttrss_counters_cache.feed_id = id";
1470
1471                 $result = db_query($link, $query);
1472                 $fctrs_modified = false;
1473
1474                 while ($line = db_fetch_assoc($result)) {
1475
1476                         $id = $line["id"];
1477                         $count = $line["count"];
1478                         $last_error = htmlspecialchars($line["last_error"]);
1479
1480                         $last_updated = make_local_datetime($link, $line['last_updated'], false);
1481
1482                         $has_img = feed_has_icon($id);
1483
1484                         if (date('Y') - date('Y', strtotime($line['last_updated'])) > 2)
1485                                 $last_updated = '';
1486
1487                         $cv = array("id" => $id,
1488                                 "updated" => $last_updated,
1489                                 "counter" => (int) $count,
1490                                 "has_img" => (int) $has_img);
1491
1492                         if ($last_error)
1493                                 $cv["error"] = $last_error;
1494
1495 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1496 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1497
1498                         if ($active_feed && $id == $active_feed)
1499                                 $cv["title"] = truncate_string($line["title"], 30);
1500
1501                         array_push($ret_arr, $cv);
1502
1503                 }
1504
1505                 return $ret_arr;
1506         }
1507
1508         function get_pgsql_version($link) {
1509                 $result = db_query($link, "SELECT version() AS version");
1510                 $version = explode(" ", db_fetch_result($result, 0, "version"));
1511                 return $version[1];
1512         }
1513
1514         /**
1515          * @return array (code => Status code, message => error message if available)
1516          *
1517          *                 0 - OK, Feed already exists
1518          *                 1 - OK, Feed added
1519          *                 2 - Invalid URL
1520          *                 3 - URL content is HTML, no feeds available
1521          *                 4 - URL content is HTML which contains multiple feeds.
1522          *                     Here you should call extractfeedurls in rpc-backend
1523          *                     to get all possible feeds.
1524          *                 5 - Couldn't download the URL content.
1525          */
1526         function subscribe_to_feed($link, $url, $cat_id = 0,
1527                         $auth_login = '', $auth_pass = '', $need_auth = false) {
1528
1529                 global $fetch_last_error;
1530
1531                 require_once "include/rssfuncs.php";
1532
1533                 $url = fix_url($url);
1534
1535                 if (!$url || !validate_feed_url($url)) return array("code" => 2);
1536
1537                 $contents = @fetch_file_contents($url, false, $auth_login, $auth_pass);
1538
1539                 if (!$contents) {
1540                         return array("code" => 5, "message" => $fetch_last_error);
1541                 }
1542
1543                 if (is_html($contents)) {
1544                         $feedUrls = get_feeds_from_html($url, $contents);
1545
1546                         if (count($feedUrls) == 0) {
1547                                 return array("code" => 3);
1548                         } else if (count($feedUrls) > 1) {
1549                                 return array("code" => 4, "feeds" => $feedUrls);
1550                         }
1551                         //use feed url as new URL
1552                         $url = key($feedUrls);
1553                 }
1554
1555                 if ($cat_id == "0" || !$cat_id) {
1556                         $cat_qpart = "NULL";
1557                 } else {
1558                         $cat_qpart = "'$cat_id'";
1559                 }
1560
1561                 $result = db_query($link,
1562                         "SELECT id FROM ttrss_feeds
1563                         WHERE feed_url = '$url' AND owner_uid = ".$_SESSION["uid"]);
1564
1565                 if (db_num_rows($result) == 0) {
1566                         $result = db_query($link,
1567                                 "INSERT INTO ttrss_feeds
1568                                         (owner_uid,feed_url,title,cat_id, auth_login,auth_pass,update_method)
1569                                 VALUES ('".$_SESSION["uid"]."', '$url',
1570                                 '[Unknown]', $cat_qpart, '$auth_login', '$auth_pass', 0)");
1571
1572                         $result = db_query($link,
1573                                 "SELECT id FROM ttrss_feeds WHERE feed_url = '$url'
1574                                         AND owner_uid = " . $_SESSION["uid"]);
1575
1576                         $feed_id = db_fetch_result($result, 0, "id");
1577
1578                         if ($feed_id) {
1579                                 update_rss_feed($link, $feed_id, true);
1580                         }
1581
1582                         return array("code" => 1);
1583                 } else {
1584                         return array("code" => 0);
1585                 }
1586         }
1587
1588         function print_feed_select($link, $id, $default_id = "",
1589                 $attributes = "", $include_all_feeds = true,
1590                 $root_id = false, $nest_level = 0) {
1591
1592                 if (!$root_id) {
1593                         print "<select id=\"$id\" name=\"$id\" $attributes>";
1594                         if ($include_all_feeds) {
1595                                 $is_selected = ("0" == $default_id) ? "selected=\"1\"" : "";
1596                                 print "<option $is_selected value=\"0\">".__('All feeds')."</option>";
1597                         }
1598                 }
1599
1600                 if (get_pref($link, 'ENABLE_FEED_CATS')) {
1601
1602                         if ($root_id)
1603                                 $parent_qpart = "parent_cat = '$root_id'";
1604                         else
1605                                 $parent_qpart = "parent_cat IS NULL";
1606
1607                         $result = db_query($link, "SELECT id,title,
1608                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1609                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1610                                 FROM ttrss_feed_categories
1611                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1612
1613                         while ($line = db_fetch_assoc($result)) {
1614
1615                                 for ($i = 0; $i < $nest_level; $i++)
1616                                         $line["title"] = " - " . $line["title"];
1617
1618                                 $is_selected = ("CAT:".$line["id"] == $default_id) ? "selected=\"1\"" : "";
1619
1620                                 printf("<option $is_selected value='CAT:%d'>%s</option>",
1621                                         $line["id"], htmlspecialchars($line["title"]));
1622
1623                                 if ($line["num_children"] > 0)
1624                                         print_feed_select($link, $id, $default_id, $attributes,
1625                                                 $include_all_feeds, $line["id"], $nest_level+1);
1626
1627                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1628                                         WHERE cat_id = '".$line["id"]."' AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1629
1630                                 while ($fline = db_fetch_assoc($feed_result)) {
1631                                         $is_selected = ($fline["id"] == $default_id) ? "selected=\"1\"" : "";
1632
1633                                         $fline["title"] = " + " . $fline["title"];
1634
1635                                         for ($i = 0; $i < $nest_level; $i++)
1636                                                 $fline["title"] = " - " . $fline["title"];
1637
1638                                         printf("<option $is_selected value='%d'>%s</option>",
1639                                                 $fline["id"], htmlspecialchars($fline["title"]));
1640                                 }
1641                         }
1642
1643                         if (!$root_id) {
1644                                 $is_selected = ($default_id == "CAT:0") ? "selected=\"1\"" : "";
1645
1646                                 printf("<option $is_selected value='CAT:0'>%s</option>",
1647                                         __("Uncategorized"));
1648
1649                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1650                                         WHERE cat_id IS NULL AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1651
1652                                 while ($fline = db_fetch_assoc($feed_result)) {
1653                                         $is_selected = ($fline["id"] == $default_id && !$default_is_cat) ? "selected=\"1\"" : "";
1654
1655                                         $fline["title"] = " + " . $fline["title"];
1656
1657                                         for ($i = 0; $i < $nest_level; $i++)
1658                                                 $fline["title"] = " - " . $fline["title"];
1659
1660                                         printf("<option $is_selected value='%d'>%s</option>",
1661                                                 $fline["id"], htmlspecialchars($fline["title"]));
1662                                 }
1663                         }
1664
1665                 } else {
1666                         $result = db_query($link, "SELECT id,title FROM ttrss_feeds
1667                                 WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
1668
1669                         while ($line = db_fetch_assoc($result)) {
1670
1671                                 $is_selected = ($line["id"] == $default_id) ? "selected=\"1\"" : "";
1672
1673                                 printf("<option $is_selected value='%d'>%s</option>",
1674                                         $line["id"], htmlspecialchars($line["title"]));
1675                         }
1676                 }
1677
1678                 if (!$root_id) {
1679                         print "</select>";
1680                 }
1681         }
1682
1683         function print_feed_cat_select($link, $id, $default_id,
1684                 $attributes, $include_all_cats = true, $root_id = false, $nest_level = 0) {
1685
1686                         if (!$root_id) {
1687                                         print "<select id=\"$id\" name=\"$id\" default=\"$default_id\" onchange=\"catSelectOnChange(this)\" $attributes>";
1688                         }
1689
1690                         if ($root_id)
1691                                 $parent_qpart = "parent_cat = '$root_id'";
1692                         else
1693                                 $parent_qpart = "parent_cat IS NULL";
1694
1695                         $result = db_query($link, "SELECT id,title,
1696                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1697                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1698                                 FROM ttrss_feed_categories
1699                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1700
1701                         while ($line = db_fetch_assoc($result)) {
1702                                 if ($line["id"] == $default_id) {
1703                                         $is_selected = "selected=\"1\"";
1704                                 } else {
1705                                         $is_selected = "";
1706                                 }
1707
1708                                 for ($i = 0; $i < $nest_level; $i++)
1709                                         $line["title"] = " - " . $line["title"];
1710
1711                                 if ($line["title"])
1712                                         printf("<option $is_selected value='%d'>%s</option>",
1713                                                 $line["id"], htmlspecialchars($line["title"]));
1714
1715                                 if ($line["num_children"] > 0)
1716                                         print_feed_cat_select($link, $id, $default_id, $attributes,
1717                                                 $include_all_cats, $line["id"], $nest_level+1);
1718                         }
1719
1720                         if (!$root_id) {
1721                                 if ($include_all_cats) {
1722                                         if (db_num_rows($result) > 0) {
1723                                                 print "<option disabled=\"1\">--------</option>";
1724                                         }
1725
1726                                         if ($default_id == 0) {
1727                                                 $is_selected = "selected=\"1\"";
1728                                         } else {
1729                                                 $is_selected = "";
1730                                         }
1731
1732                                         print "<option $is_selected value=\"0\">".__('Uncategorized')."</option>";
1733                                 }
1734                                 print "</select>";
1735                         }
1736                 }
1737
1738         function checkbox_to_sql_bool($val) {
1739                 return ($val == "on") ? "true" : "false";
1740         }
1741
1742         function getFeedCatTitle($link, $id) {
1743                 if ($id == -1) {
1744                         return __("Special");
1745                 } else if ($id < -10) {
1746                         return __("Labels");
1747                 } else if ($id > 0) {
1748                         $result = db_query($link, "SELECT ttrss_feed_categories.title
1749                                 FROM ttrss_feeds, ttrss_feed_categories WHERE ttrss_feeds.id = '$id' AND
1750                                         cat_id = ttrss_feed_categories.id");
1751                         if (db_num_rows($result) == 1) {
1752                                 return db_fetch_result($result, 0, "title");
1753                         } else {
1754                                 return __("Uncategorized");
1755                         }
1756                 } else {
1757                         return "getFeedCatTitle($id) failed";
1758                 }
1759
1760         }
1761
1762         function getFeedIcon($id) {
1763                 switch ($id) {
1764                 case 0:
1765                         return "images/archive.png";
1766                         break;
1767                 case -1:
1768                         return "images/mark_set.svg";
1769                         break;
1770                 case -2:
1771                         return "images/pub_set.svg";
1772                         break;
1773                 case -3:
1774                         return "images/fresh.png";
1775                         break;
1776                 case -4:
1777                         return "images/tag.png";
1778                         break;
1779                 case -6:
1780                         return "images/recently_read.png";
1781                         break;
1782                 default:
1783                         if ($id < -10) {
1784                                 return "images/label.png";
1785                         } else {
1786                                 if (file_exists(ICONS_DIR . "/$id.ico"))
1787                                         return ICONS_URL . "/$id.ico";
1788                         }
1789                         break;
1790                 }
1791         }
1792
1793         function getFeedTitle($link, $id, $cat = false) {
1794                 if ($cat) {
1795                         return getCategoryTitle($link, $id);
1796                 } else if ($id == -1) {
1797                         return __("Starred articles");
1798                 } else if ($id == -2) {
1799                         return __("Published articles");
1800                 } else if ($id == -3) {
1801                         return __("Fresh articles");
1802                 } else if ($id == -4) {
1803                         return __("All articles");
1804                 } else if ($id === 0 || $id === "0") {
1805                         return __("Archived articles");
1806                 } else if ($id == -6) {
1807                         return __("Recently read");
1808                 } else if ($id < -10) {
1809                         $label_id = -$id - 11;
1810                         $result = db_query($link, "SELECT caption FROM ttrss_labels2 WHERE id = '$label_id'");
1811                         if (db_num_rows($result) == 1) {
1812                                 return db_fetch_result($result, 0, "caption");
1813                         } else {
1814                                 return "Unknown label ($label_id)";
1815                         }
1816
1817                 } else if (is_numeric($id) && $id > 0) {
1818                         $result = db_query($link, "SELECT title FROM ttrss_feeds WHERE id = '$id'");
1819                         if (db_num_rows($result) == 1) {
1820                                 return db_fetch_result($result, 0, "title");
1821                         } else {
1822                                 return "Unknown feed ($id)";
1823                         }
1824                 } else {
1825                         return $id;
1826                 }
1827         }
1828
1829         function make_init_params($link) {
1830                 $params = array();
1831
1832                 $params["sign_progress"] = theme_image($link, "images/indicator_white.gif");
1833                 $params["sign_progress_tiny"] = theme_image($link, "images/indicator_tiny.gif");
1834                 $params["sign_excl"] = theme_image($link, "images/sign_excl.svg");
1835                 $params["sign_info"] = theme_image($link, "images/sign_info.svg");
1836
1837                 foreach (array("ON_CATCHUP_SHOW_NEXT_FEED", "HIDE_READ_FEEDS",
1838                         "ENABLE_FEED_CATS", "FEEDS_SORT_BY_UNREAD", "CONFIRM_FEED_CATCHUP",
1839                         "CDM_AUTO_CATCHUP", "FRESH_ARTICLE_MAX_AGE", "DEFAULT_ARTICLE_LIMIT",
1840                         "HIDE_READ_SHOWS_SPECIAL", "COMBINED_DISPLAY_MODE") as $param) {
1841
1842                                  $params[strtolower($param)] = (int) get_pref($link, $param);
1843                  }
1844
1845                 $params["icons_url"] = ICONS_URL;
1846                 $params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
1847                 $params["default_view_mode"] = get_pref($link, "_DEFAULT_VIEW_MODE");
1848                 $params["default_view_limit"] = (int) get_pref($link, "_DEFAULT_VIEW_LIMIT");
1849                 $params["default_view_order_by"] = get_pref($link, "_DEFAULT_VIEW_ORDER_BY");
1850                 $params["bw_limit"] = (int) $_SESSION["bw_limit"];
1851
1852                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
1853                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1854
1855                 $max_feed_id = db_fetch_result($result, 0, "mid");
1856                 $num_feeds = db_fetch_result($result, 0, "nf");
1857
1858                 $params["max_feed_id"] = (int) $max_feed_id;
1859                 $params["num_feeds"] = (int) $num_feeds;
1860
1861                 $params["collapsed_feedlist"] = (int) get_pref($link, "_COLLAPSED_FEEDLIST");
1862                 $params["hotkeys"] = get_hotkeys_map($link);
1863
1864                 $params["csrf_token"] = $_SESSION["csrf_token"];
1865                 $params["widescreen"] = (int) $_SESSION["widescreen"];
1866
1867                 $params['simple_update'] = defined('SIMPLE_UPDATE_MODE') && SIMPLE_UPDATE_MODE;
1868
1869                 return $params;
1870         }
1871
1872         function get_hotkeys_info($link) {
1873                 $hotkeys = array(
1874                         __("Navigation") => array(
1875                                 "next_feed" => __("Open next feed"),
1876                                 "prev_feed" => __("Open previous feed"),
1877                                 "next_article" => __("Open next article"),
1878                                 "prev_article" => __("Open previous article"),
1879                                 "search_dialog" => __("Show search dialog")),
1880                         __("Article") => array(
1881                                 "toggle_mark" => __("Toggle starred"),
1882                                 "toggle_publ" => __("Toggle published"),
1883                                 "toggle_unread" => __("Toggle unread"),
1884                                 "edit_tags" => __("Edit tags"),
1885                                 "dismiss_selected" => __("Dismiss selected"),
1886                                 "dismiss_read" => __("Dismiss read"),
1887                                 "open_in_new_window" => __("Open in new window"),
1888                                 "catchup_below" => __("Mark below as read"),
1889                                 "catchup_above" => __("Mark above as read"),
1890                                 "article_scroll_down" => __("Scroll down"),
1891                                 "article_scroll_up" => __("Scroll up"),
1892                                 "select_article_cursor" => __("Select article under cursor"),
1893                                 "email_article" => __("Email article"),
1894                                 "close_article" => __("Close article"),
1895                                 "toggle_widescreen" => __("Toggle widescreen mode")),
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                         __("Go to") => array(
1914                                 "goto_all" => __("All articles"),
1915                                 "goto_fresh" => __("Fresh"),
1916                                 "goto_marked" => __("Starred"),
1917                                 "goto_published" => __("Published"),
1918                                 "goto_tagcloud" => __("Tag cloud"),
1919                                 "goto_prefs" => __("Preferences")),
1920                         __("Other") => array(
1921                                 "create_label" => __("Create label"),
1922                                 "create_filter" => __("Create filter"),
1923                                 "collapse_sidebar" => __("Un/collapse sidebar"),
1924                                 "help_dialog" => __("Show help dialog"))
1925                         );
1926
1927                 return $hotkeys;
1928         }
1929
1930         function get_hotkeys_map($link) {
1931                 $hotkeys = array(
1932 //                      "navigation" => array(
1933                                 "k" => "next_feed",
1934                                 "j" => "prev_feed",
1935                                 "n" => "next_article",
1936                                 "p" => "prev_article",
1937                                 "(38)|up" => "prev_article",
1938                                 "(40)|down" => "next_article",
1939                                 "(191)|/" => "search_dialog",
1940 //                      "article" => array(
1941                                 "s" => "toggle_mark",
1942                                 "S" => "toggle_publ",
1943                                 "u" => "toggle_unread",
1944                                 "T" => "edit_tags",
1945                                 "D" => "dismiss_selected",
1946                                 "X" => "dismiss_read",
1947                                 "o" => "open_in_new_window",
1948                                 "c p" => "catchup_below",
1949                                 "c n" => "catchup_above",
1950                                 "N" => "article_scroll_down",
1951                                 "P" => "article_scroll_up",
1952                                 "a W" => "toggle_widescreen",
1953                                 "e" => "email_article",
1954                                 "a q" => "close_article",
1955 //                      "article_selection" => array(
1956                                 "a a" => "select_all",
1957                                 "a u" => "select_unread",
1958                                 "a U" => "select_marked",
1959                                 "a p" => "select_published",
1960                                 "a i" => "select_invert",
1961                                 "a n" => "select_none",
1962 //                      "feed" => array(
1963                                 "f r" => "feed_refresh",
1964                                 "f a" => "feed_unhide_read",
1965                                 "f s" => "feed_subscribe",
1966                                 "f e" => "feed_edit",
1967                                 "f q" => "feed_catchup",
1968                                 "f x" => "feed_reverse",
1969                                 "f D" => "feed_debug_update",
1970                                 "Q" => "catchup_all",
1971                                 "x" => "cat_toggle_collapse",
1972 //                      "goto" => array(
1973                                 "g a" => "goto_all",
1974                                 "g f" => "goto_fresh",
1975                                 "g s" => "goto_marked",
1976                                 "g p" => "goto_published",
1977                                 "g t" => "goto_tagcloud",
1978                                 "g P" => "goto_prefs",
1979 //                      "other" => array(
1980                                 "(9)|Tab" => "select_article_cursor", // tab
1981                                 "c l" => "create_label",
1982                                 "c f" => "create_filter",
1983                                 "c s" => "collapse_sidebar",
1984                                 "^(191)|Ctrl+/" => "help_dialog",
1985                         );
1986
1987                 global $pluginhost;
1988                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_HOTKEY_MAP) as $plugin) {
1989                         $hotkeys = $plugin->hook_hotkey_map($hotkeys);
1990                 }
1991
1992                 $prefixes = array();
1993
1994                 foreach (array_keys($hotkeys) as $hotkey) {
1995                         $pair = explode(" ", $hotkey, 2);
1996
1997                         if (count($pair) > 1 && !in_array($pair[0], $prefixes)) {
1998                                 array_push($prefixes, $pair[0]);
1999                         }
2000                 }
2001
2002                 return array($prefixes, $hotkeys);
2003         }
2004
2005         function make_runtime_info($link) {
2006                 $data = array();
2007
2008                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2009                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2010
2011                 $max_feed_id = db_fetch_result($result, 0, "mid");
2012                 $num_feeds = db_fetch_result($result, 0, "nf");
2013
2014                 $data["max_feed_id"] = (int) $max_feed_id;
2015                 $data["num_feeds"] = (int) $num_feeds;
2016
2017                 $data['last_article_id'] = getLastArticleId($link);
2018                 $data['cdm_expanded'] = get_pref($link, 'CDM_EXPANDED');
2019
2020                 if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
2021
2022                         $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
2023
2024                         if (time() - $_SESSION["daemon_stamp_check"] > 30) {
2025
2026                                 $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
2027
2028                                 if ($stamp) {
2029                                         $stamp_delta = time() - $stamp;
2030
2031                                         if ($stamp_delta > 1800) {
2032                                                 $stamp_check = 0;
2033                                         } else {
2034                                                 $stamp_check = 1;
2035                                                 $_SESSION["daemon_stamp_check"] = time();
2036                                         }
2037
2038                                         $data['daemon_stamp_ok'] = $stamp_check;
2039
2040                                         $stamp_fmt = date("Y.m.d, G:i", $stamp);
2041
2042                                         $data['daemon_stamp'] = $stamp_fmt;
2043                                 }
2044                         }
2045                 }
2046
2047                 if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
2048                                 $new_version_details = @check_for_update($link);
2049
2050                                 $data['new_version_available'] = (int) ($new_version_details != false);
2051
2052                                 $_SESSION["last_version_check"] = time();
2053                                 $_SESSION["version_data"] = $new_version_details;
2054                 }
2055
2056                 return $data;
2057         }
2058
2059         function search_to_sql($link, $search, $match_on) {
2060
2061                 $search_query_part = "";
2062
2063                 $keywords = explode(" ", $search);
2064                 $query_keywords = array();
2065
2066                 foreach ($keywords as $k) {
2067                         if (strpos($k, "-") === 0) {
2068                                 $k = substr($k, 1);
2069                                 $not = "NOT";
2070                         } else {
2071                                 $not = "";
2072                         }
2073
2074                         $commandpair = explode(":", mb_strtolower($k), 2);
2075
2076                         if ($commandpair[0] == "note" && $commandpair[1]) {
2077
2078                                 if ($commandpair[1] == "true")
2079                                         array_push($query_keywords, "($not (note IS NOT NULL AND note != ''))");
2080                                 else
2081                                         array_push($query_keywords, "($not (note IS NULL OR note = ''))");
2082
2083                         } else if ($commandpair[0] == "star" && $commandpair[1]) {
2084
2085                                 if ($commandpair[1] == "true")
2086                                         array_push($query_keywords, "($not (marked = true))");
2087                                 else
2088                                         array_push($query_keywords, "($not (marked = false))");
2089
2090                         } else if ($commandpair[0] == "pub" && $commandpair[1]) {
2091
2092                                 if ($commandpair[1] == "true")
2093                                         array_push($query_keywords, "($not (published = true))");
2094                                 else
2095                                         array_push($query_keywords, "($not (published = false))");
2096
2097                         } else if (strpos($k, "@") === 0) {
2098
2099                                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $_SESSION['uid']);
2100                                 $orig_ts = strtotime(substr($k, 1));
2101                                 $k = date("Y-m-d", convert_timestamp($orig_ts, $user_tz_string, 'UTC'));
2102
2103                                 //$k = date("Y-m-d", strtotime(substr($k, 1)));
2104
2105                                 array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
2106                         } else if ($match_on == "both") {
2107                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2108                                                 OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2109                         } else if ($match_on == "title") {
2110                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%'))");
2111                         } else if ($match_on == "content") {
2112                                 array_push($query_keywords, "(UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2113                         }
2114                 }
2115
2116                 $search_query_part = implode("AND", $query_keywords);
2117
2118                 return $search_query_part;
2119         }
2120
2121         function getParentCategories($link, $cat, $owner_uid) {
2122                 $rv = array();
2123
2124                 $result = db_query($link, "SELECT parent_cat FROM ttrss_feed_categories
2125                         WHERE id = '$cat' AND parent_cat IS NOT NULL AND owner_uid = $owner_uid");
2126
2127                 while ($line = db_fetch_assoc($result)) {
2128                         array_push($rv, $line["parent_cat"]);
2129                         $rv = array_merge($rv, getParentCategories($link, $line["parent_cat"], $owner_uid));
2130                 }
2131
2132                 return $rv;
2133         }
2134
2135         function getChildCategories($link, $cat, $owner_uid) {
2136                 $rv = array();
2137
2138                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories
2139                         WHERE parent_cat = '$cat' AND owner_uid = $owner_uid");
2140
2141                 while ($line = db_fetch_assoc($result)) {
2142                         array_push($rv, $line["id"]);
2143                         $rv = array_merge($rv, getChildCategories($link, $line["id"], $owner_uid));
2144                 }
2145
2146                 return $rv;
2147         }
2148
2149         function queryFeedHeadlines($link, $feed, $limit, $view_mode, $cat_view, $search, $search_mode, $match_on, $override_order = false, $offset = 0, $owner_uid = 0, $filter = false, $since_id = 0, $include_children = false) {
2150
2151                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2152
2153                 $ext_tables_part = "";
2154
2155                         if ($search) {
2156
2157                                 if (SPHINX_ENABLED) {
2158                                         $ids = join(",", @sphinx_search($search, 0, 500));
2159
2160                                         if ($ids)
2161                                                 $search_query_part = "ref_id IN ($ids) AND ";
2162                                         else
2163                                                 $search_query_part = "ref_id = -1 AND ";
2164
2165                                 } else {
2166                                         $search_query_part = search_to_sql($link, $search, $match_on);
2167                                         $search_query_part .= " AND ";
2168                                 }
2169
2170                         } else {
2171                                 $search_query_part = "";
2172                         }
2173
2174                         if ($filter) {
2175
2176                                 if (DB_TYPE == "pgsql") {
2177                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '14 days' ";
2178                                 } else {
2179                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL 14 DAY) ";
2180                                 }
2181
2182                                 $override_order = "updated DESC";
2183
2184                                 $filter_query_part = filter_to_sql($link, $filter, $owner_uid);
2185
2186                                 // Try to check if SQL regexp implementation chokes on a valid regexp
2187                                 $result = db_query($link, "SELECT true AS true_val FROM ttrss_entries,
2188                                         ttrss_user_entries, ttrss_feeds, ttrss_feed_categories
2189                                         WHERE $filter_query_part LIMIT 1", false);
2190
2191                                 $test = db_fetch_result($result, 0, "true_val");
2192
2193                                 if (!$test) {
2194                                         $filter_query_part = "false AND";
2195                                 } else {
2196                                         $filter_query_part .= " AND";
2197                                 }
2198
2199                         } else {
2200                                 $filter_query_part = "";
2201                         }
2202
2203                         if ($since_id) {
2204                                 $since_id_part = "ttrss_entries.id > $since_id AND ";
2205                         } else {
2206                                 $since_id_part = "";
2207                         }
2208
2209                         $view_query_part = "";
2210
2211                         if ($view_mode == "adaptive" || $view_query_part == "noscores") {
2212                                 if ($search) {
2213                                         $view_query_part = " ";
2214                                 } else if ($feed != -1) {
2215                                         $unread = getFeedUnread($link, $feed, $cat_view);
2216
2217                                         if ($cat_view && $feed > 0 && $include_children)
2218                                                 $unread += getCategoryChildrenUnread($link, $feed);
2219
2220                                         if ($unread > 0) {
2221                                                 $view_query_part = " unread = true AND ";
2222                                         }
2223                                 }
2224                         }
2225
2226                         if ($view_mode == "marked") {
2227                                 $view_query_part = " marked = true AND ";
2228                         }
2229
2230                         if ($view_mode == "published") {
2231                                 $view_query_part = " published = true AND ";
2232                         }
2233
2234                         if ($view_mode == "unread") {
2235                                 $view_query_part = " unread = true AND ";
2236                         }
2237
2238                         if ($view_mode == "updated") {
2239                                 $view_query_part = " (last_read is null and unread = false) AND ";
2240                         }
2241
2242                         if ($limit > 0) {
2243                                 $limit_query_part = "LIMIT " . $limit;
2244                         }
2245
2246                         $allow_archived = false;
2247
2248                         $vfeed_query_part = "";
2249
2250                         // override query strategy and enable feed display when searching globally
2251                         if ($search && $search_mode == "all_feeds") {
2252                                 $query_strategy_part = "true";
2253                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2254                         /* tags */
2255                         } else if (!is_numeric($feed)) {
2256                                 $query_strategy_part = "true";
2257                                 $vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
2258                                         id = feed_id) as feed_title,";
2259                         } else if ($search && $search_mode == "this_cat") {
2260                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2261
2262                                 if ($feed > 0) {
2263                                         if ($include_children) {
2264                                                 $subcats = getChildCategories($link, $feed, $owner_uid);
2265                                                 array_push($subcats, $feed);
2266                                                 $cats_qpart = join(",", $subcats);
2267                                         } else {
2268                                                 $cats_qpart = $feed;
2269                                         }
2270
2271                                         $query_strategy_part = "ttrss_feeds.cat_id IN ($cats_qpart)";
2272
2273                                 } else {
2274                                         $query_strategy_part = "ttrss_feeds.cat_id IS NULL";
2275                                 }
2276
2277                         } else if ($feed > 0) {
2278
2279                                 if ($cat_view) {
2280
2281                                         if ($feed > 0) {
2282                                                 if ($include_children) {
2283                                                         # sub-cats
2284                                                         $subcats = getChildCategories($link, $feed, $owner_uid);
2285
2286                                                         array_push($subcats, $feed);
2287                                                         $query_strategy_part = "cat_id IN (".
2288                                                                         implode(",", $subcats).")";
2289
2290                                                 } else {
2291                                                         $query_strategy_part = "cat_id = '$feed'";
2292                                                 }
2293
2294                                         } else {
2295                                                 $query_strategy_part = "cat_id IS NULL";
2296                                         }
2297
2298                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2299
2300                                 } else {
2301                                         $query_strategy_part = "feed_id = '$feed'";
2302                                 }
2303                         } else if ($feed == 0 && !$cat_view) { // archive virtual feed
2304                                 $query_strategy_part = "feed_id IS NULL";
2305                                 $allow_archived = true;
2306                         } else if ($feed == 0 && $cat_view) { // uncategorized
2307                                 $query_strategy_part = "cat_id IS NULL AND feed_id IS NOT NULL";
2308                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2309                         } else if ($feed == -1) { // starred virtual feed
2310                                 $query_strategy_part = "marked = true";
2311                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2312                                 $allow_archived = true;
2313
2314                         } else if ($feed == -2) { // published virtual feed OR labels category
2315
2316                                 if (!$cat_view) {
2317                                         $query_strategy_part = "published = true";
2318                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2319                                         $allow_archived = true;
2320
2321                                         if (!$override_order) $override_order = "last_read DESC, updated DESC";
2322                                 } else {
2323                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2324
2325                                         $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2326
2327                                         $query_strategy_part = "ttrss_labels2.id = ttrss_user_labels2.label_id AND
2328                                                 ttrss_user_labels2.article_id = ref_id";
2329
2330                                 }
2331                         } else if ($feed == -6) { // recently read
2332                                 $query_strategy_part = "unread = false AND last_read IS NOT NULL";
2333                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2334                                 $allow_archived = true;
2335
2336                                 if (!$override_order) $override_order = "last_read DESC";
2337                         } else if ($feed == -3) { // fresh virtual feed
2338                                 $query_strategy_part = "unread = true AND score >= 0";
2339
2340                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
2341
2342                                 if (DB_TYPE == "pgsql") {
2343                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
2344                                 } else {
2345                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
2346                                 }
2347
2348                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2349                         } else if ($feed == -4) { // all articles virtual feed
2350                                 $query_strategy_part = "true";
2351                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2352                         } else if ($feed <= -10) { // labels
2353                                 $label_id = -$feed - 11;
2354
2355                                 $query_strategy_part = "label_id = '$label_id' AND
2356                                         ttrss_labels2.id = ttrss_user_labels2.label_id AND
2357                                         ttrss_user_labels2.article_id = ref_id";
2358
2359                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2360                                 $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2361                                 $allow_archived = true;
2362
2363                         } else {
2364                                 $query_strategy_part = "true";
2365                         }
2366
2367                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
2368                                 $date_sort_field = "updated";
2369                         } else {
2370                                 $date_sort_field = "date_entered";
2371                         }
2372
2373                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
2374                                 $order_by = "$date_sort_field";
2375                         } else {
2376                                 $order_by = "$date_sort_field DESC";
2377                         }
2378
2379                         if ($view_mode != "noscores") {
2380                                 $order_by = "score DESC, $order_by";
2381                         }
2382
2383                         if ($override_order) {
2384                                 $order_by = $override_order;
2385                         }
2386
2387                         $feed_title = "";
2388
2389                         if ($search) {
2390                                 $feed_title = T_sprintf("Search results: %s", $search);
2391                         } else {
2392                                 if ($cat_view) {
2393                                         $feed_title = getCategoryTitle($link, $feed);
2394                                 } else {
2395                                         if (is_numeric($feed) && $feed > 0) {
2396                                                 $result = db_query($link, "SELECT title,site_url,last_error
2397                                                         FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = $owner_uid");
2398
2399                                                 $feed_title = db_fetch_result($result, 0, "title");
2400                                                 $feed_site_url = db_fetch_result($result, 0, "site_url");
2401                                                 $last_error = db_fetch_result($result, 0, "last_error");
2402                                         } else {
2403                                                 $feed_title = getFeedTitle($link, $feed);
2404                                         }
2405                                 }
2406                         }
2407
2408                         $content_query_part = "content as content_preview, cached_content, ";
2409
2410                         if (is_numeric($feed)) {
2411
2412                                 if ($feed >= 0) {
2413                                         $feed_kind = "Feeds";
2414                                 } else {
2415                                         $feed_kind = "Labels";
2416                                 }
2417
2418                                 if ($limit_query_part) {
2419                                         $offset_query_part = "OFFSET $offset";
2420                                 }
2421
2422                                 // proper override_order applied above
2423                                 if ($vfeed_query_part && get_pref($link, 'VFEED_GROUP_BY_FEED', $owner_uid)) {
2424                                         if (!$override_order) {
2425                                                 $order_by = "ttrss_feeds.title, $order_by";
2426                                         } else {
2427                                                 $order_by = "ttrss_feeds.title, $override_order";
2428                                         }
2429                                 }
2430
2431                                 if (!$allow_archived) {
2432                                         $from_qpart = "ttrss_entries,ttrss_user_entries,ttrss_feeds$ext_tables_part";
2433                                         $feed_check_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
2434
2435                                 } else {
2436                                         $from_qpart = "ttrss_entries$ext_tables_part,ttrss_user_entries
2437                                                 LEFT JOIN ttrss_feeds ON (feed_id = ttrss_feeds.id)";
2438                                 }
2439
2440                                 $query = "SELECT DISTINCT
2441                                                 date_entered,
2442                                                 guid,
2443                                                 ttrss_entries.id,ttrss_entries.title,
2444                                                 updated,
2445                                                 label_cache,
2446                                                 tag_cache,
2447                                                 always_display_enclosures,
2448                                                 site_url,
2449                                                 note,
2450                                                 num_comments,
2451                                                 comments,
2452                                                 int_id,
2453                                                 unread,feed_id,marked,published,link,last_read,orig_feed_id,
2454                                                 ".SUBSTRING_FOR_DATE."(last_read,1,19) as last_read_noms,
2455                                                 $vfeed_query_part
2456                                                 $content_query_part
2457                                                 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated_noms,
2458                                                 author,score
2459                                         FROM
2460                                                 $from_qpart
2461                                         WHERE
2462                                         $feed_check_qpart
2463                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
2464                                         ttrss_user_entries.owner_uid = '$owner_uid' AND
2465                                         $search_query_part
2466                                         $filter_query_part
2467                                         $view_query_part
2468                                         $since_id_part
2469                                         $query_strategy_part ORDER BY $order_by
2470                                         $limit_query_part $offset_query_part";
2471
2472                                 if ($_REQUEST["debug"]) print $query;
2473
2474                                 $result = db_query($link, $query);
2475
2476                         } else {
2477                                 // browsing by tag
2478
2479                                 $select_qpart = "SELECT DISTINCT " .
2480                                                                 "date_entered," .
2481                                                                 "guid," .
2482                                                                 "note," .
2483                                                                 "ttrss_entries.id as id," .
2484                                                                 "title," .
2485                                                                 "updated," .
2486                                                                 "unread," .
2487                                                                 "feed_id," .
2488                                                                 "orig_feed_id," .
2489                                                                 "marked," .
2490                                                                 "num_comments, " .
2491                                                                 "comments, " .
2492                                                                 "tag_cache," .
2493                                                                 "label_cache," .
2494                                                                 "link," .
2495                                                                 "last_read," .
2496                                                                 SUBSTRING_FOR_DATE . "(last_read,1,19) as last_read_noms," .
2497                                                                 $since_id_part .
2498                                                                 $vfeed_query_part .
2499                                                                 $content_query_part .
2500                                                                 SUBSTRING_FOR_DATE . "(updated,1,19) as updated_noms," .
2501                                                                 "score ";
2502
2503                                 $feed_kind = "Tags";
2504                                 $all_tags = explode(",", $feed);
2505                                 if ($search_mode == 'any') {
2506                                         $tag_sql = "tag_name in (" . implode(", ", array_map("db_quote", $all_tags)) . ")";
2507                                         $from_qpart = " FROM ttrss_entries,ttrss_user_entries,ttrss_tags ";
2508                                         $where_qpart = " WHERE " .
2509                                                                    "ref_id = ttrss_entries.id AND " .
2510                                                                    "ttrss_user_entries.owner_uid = $owner_uid AND " .
2511                                                                    "post_int_id = int_id AND $tag_sql AND " .
2512                                                                    $view_query_part .
2513                                                                    $search_query_part .
2514                                                                    $query_strategy_part . " ORDER BY $order_by " .
2515                                                                    $limit_query_part;
2516
2517                                 } else {
2518                                         $i = 1;
2519                                         $sub_selects = array();
2520                                         $sub_ands = array();
2521                                         foreach ($all_tags as $term) {
2522                                                 array_push($sub_selects, "(SELECT post_int_id from ttrss_tags WHERE tag_name = " . db_quote($term) . " AND owner_uid = $owner_uid) as A$i");
2523                                                 $i++;
2524                                         }
2525                                         if ($i > 2) {
2526                                                 $x = 1;
2527                                                 $y = 2;
2528                                                 do {
2529                                                         array_push($sub_ands, "A$x.post_int_id = A$y.post_int_id");
2530                                                         $x++;
2531                                                         $y++;
2532                                                 } while ($y < $i);
2533                                         }
2534                                         array_push($sub_ands, "A1.post_int_id = ttrss_user_entries.int_id and ttrss_user_entries.owner_uid = $owner_uid");
2535                                         array_push($sub_ands, "ttrss_user_entries.ref_id = ttrss_entries.id");
2536                                         $from_qpart = " FROM " . implode(", ", $sub_selects) . ", ttrss_user_entries, ttrss_entries";
2537                                         $where_qpart = " WHERE " . implode(" AND ", $sub_ands);
2538                                 }
2539                                 //                              error_log("TAG SQL: " . $tag_sql);
2540                                 // $tag_sql = "tag_name = '$feed'";   DEFAULT way
2541
2542                                 //                              error_log("[". $select_qpart . "][" . $from_qpart . "][" .$where_qpart . "]");
2543                                 $result = db_query($link, $select_qpart . $from_qpart . $where_qpart);
2544                         }
2545
2546                         return array($result, $feed_title, $feed_site_url, $last_error);
2547
2548         }
2549
2550         function sanitize($link, $str, $force_strip_tags = false, $owner = false, $site_url = false) {
2551                 if (!$owner) $owner = $_SESSION["uid"];
2552
2553                 $res = trim($str); if (!$res) return '';
2554
2555                 $config = array('safe' => 1, 'deny_attribute' => 'style, width, height, class, id', 'comment' => 1, 'cdata' => 1, 'balance' => 0);
2556                 $res = htmLawed($res, $config);
2557
2558                 if (get_pref($link, "STRIP_IMAGES", $owner)) {
2559                         $res = preg_replace('/<img[^>]+>/is', '', $res);
2560                 }
2561
2562                 if (strpos($res, "href=") === false)
2563                         $res = rewrite_urls($res);
2564
2565                 $charset_hack = '<head>
2566                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
2567                 </head>';
2568
2569                 $res = trim($res); if (!$res) return '';
2570
2571                 libxml_use_internal_errors(true);
2572
2573                 $doc = new DOMDocument();
2574                 $doc->loadHTML($charset_hack . $res);
2575                 $xpath = new DOMXPath($doc);
2576
2577                 $entries = $xpath->query('(//a[@href]|//img[@src])');
2578                 $br_inserted = 0;
2579
2580                 foreach ($entries as $entry) {
2581
2582                         if ($site_url) {
2583
2584                                 if ($entry->hasAttribute('href'))
2585                                         $entry->setAttribute('href',
2586                                                 rewrite_relative_url($site_url, $entry->getAttribute('href')));
2587
2588                                 if ($entry->hasAttribute('src'))
2589                                         if (preg_match('/^image.php\?i=[a-z0-9]+$/', $entry->getAttribute('src')) == 0)
2590                                                 $entry->setAttribute('src',
2591                                                         rewrite_relative_url($site_url, $entry->getAttribute('src')));
2592                         }
2593
2594                         if (strtolower($entry->nodeName) == "a") {
2595                                 $entry->setAttribute("target", "_blank");
2596                         }
2597
2598                         if (strtolower($entry->nodeName) == "img" && !$br_inserted) {
2599                                 $br = $doc->createElement("br");
2600
2601                                 if ($entry->parentNode->nextSibling) {
2602                                         $entry->parentNode->insertBefore($br, $entry->nextSibling);
2603                                         $br_inserted = 1;
2604                                 }
2605
2606                         }
2607                 }
2608
2609                 $node = $doc->getElementsByTagName('body')->item(0);
2610
2611                 // http://tt-rss.org/redmine/issues/357
2612                 return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
2613         }
2614
2615         function check_for_update($link) {
2616                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2617                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION;
2618
2619                         $version_data = @fetch_file_contents($version_url);
2620
2621                         if ($version_data) {
2622                                 $version_data = json_decode($version_data, true);
2623                                 if ($version_data && $version_data['version']) {
2624
2625                                         if (version_compare(VERSION, $version_data['version']) == -1) {
2626                                                 return $version_data;
2627                                         }
2628                                 }
2629                         }
2630                 }
2631                 return false;
2632         }
2633
2634         function catchupArticlesById($link, $ids, $cmode, $owner_uid = false) {
2635
2636                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2637                 if (count($ids) == 0) return;
2638
2639                 $tmp_ids = array();
2640
2641                 foreach ($ids as $id) {
2642                         array_push($tmp_ids, "ref_id = '$id'");
2643                 }
2644
2645                 $ids_qpart = join(" OR ", $tmp_ids);
2646
2647                 if ($cmode == 0) {
2648                         db_query($link, "UPDATE ttrss_user_entries SET
2649                         unread = false,last_read = NOW()
2650                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2651                 } else if ($cmode == 1) {
2652                         db_query($link, "UPDATE ttrss_user_entries SET
2653                         unread = true
2654                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2655                 } else {
2656                         db_query($link, "UPDATE ttrss_user_entries SET
2657                         unread = NOT unread,last_read = NOW()
2658                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2659                 }
2660
2661                 /* update ccache */
2662
2663                 $result = db_query($link, "SELECT DISTINCT feed_id FROM ttrss_user_entries
2664                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2665
2666                 while ($line = db_fetch_assoc($result)) {
2667                         ccache_update($link, $line["feed_id"], $owner_uid);
2668                 }
2669         }
2670
2671         function get_article_tags($link, $id, $owner_uid = 0, $tag_cache = false) {
2672
2673                 $a_id = db_escape_string($id);
2674
2675                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2676
2677                 $query = "SELECT DISTINCT tag_name,
2678                         owner_uid as owner FROM
2679                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
2680                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
2681
2682                 $obj_id = md5("TAGS:$owner_uid:$id");
2683                 $tags = array();
2684
2685                 /* check cache first */
2686
2687                 if ($tag_cache === false) {
2688                         $result = db_query($link, "SELECT tag_cache FROM ttrss_user_entries
2689                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2690
2691                         $tag_cache = db_fetch_result($result, 0, "tag_cache");
2692                 }
2693
2694                 if ($tag_cache) {
2695                         $tags = explode(",", $tag_cache);
2696                 } else {
2697
2698                         /* do it the hard way */
2699
2700                         $tmp_result = db_query($link, $query);
2701
2702                         while ($tmp_line = db_fetch_assoc($tmp_result)) {
2703                                 array_push($tags, $tmp_line["tag_name"]);
2704                         }
2705
2706                         /* update the cache */
2707
2708                         $tags_str = db_escape_string(join(",", $tags));
2709
2710                         db_query($link, "UPDATE ttrss_user_entries
2711                                 SET tag_cache = '$tags_str' WHERE ref_id = '$id'
2712                                 AND owner_uid = $owner_uid");
2713                 }
2714
2715                 return $tags;
2716         }
2717
2718         function trim_array($array) {
2719                 $tmp = $array;
2720                 array_walk($tmp, 'trim');
2721                 return $tmp;
2722         }
2723
2724         function tag_is_valid($tag) {
2725                 if ($tag == '') return false;
2726                 if (preg_match("/^[0-9]*$/", $tag)) return false;
2727                 if (mb_strlen($tag) > 250) return false;
2728
2729                 if (function_exists('iconv')) {
2730                         $tag = iconv("utf-8", "utf-8", $tag);
2731                 }
2732
2733                 if (!$tag) return false;
2734
2735                 return true;
2736         }
2737
2738         function render_login_form($link, $form_id = 0) {
2739                 switch ($form_id) {
2740                 case 0:
2741                         require_once "login_form.php";
2742                         break;
2743                 case 1:
2744                         require_once "mobile/login_form.php";
2745                         break;
2746                 }
2747                 exit;
2748         }
2749
2750         // from http://developer.apple.com/internet/safari/faq.html
2751         function no_cache_incantation() {
2752                 header("Expires: Mon, 22 Dec 1980 00:00:00 GMT"); // Happy birthday to me :)
2753                 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
2754                 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); // HTTP/1.1
2755                 header("Cache-Control: post-check=0, pre-check=0", false);
2756                 header("Pragma: no-cache"); // HTTP/1.0
2757         }
2758
2759         function format_warning($msg, $id = "") {
2760                 global $link;
2761                 return "<div class=\"warning\" id=\"$id\">
2762                         <img src=\"".theme_image($link, "images/sign_excl.svg")."\">$msg</div>";
2763         }
2764
2765         function format_notice($msg, $id = "") {
2766                 global $link;
2767                 return "<div class=\"notice\" id=\"$id\">
2768                         <img src=\"".theme_image($link, "images/sign_info.svg")."\">$msg</div>";
2769         }
2770
2771         function format_error($msg, $id = "") {
2772                 global $link;
2773                 return "<div class=\"error\" id=\"$id\">
2774                         <img src=\"".theme_image($link, "images/sign_excl.svg")."\">$msg</div>";
2775         }
2776
2777         function print_notice($msg) {
2778                 return print format_notice($msg);
2779         }
2780
2781         function print_warning($msg) {
2782                 return print format_warning($msg);
2783         }
2784
2785         function print_error($msg) {
2786                 return print format_error($msg);
2787         }
2788
2789
2790         function T_sprintf() {
2791                 $args = func_get_args();
2792                 return vsprintf(__(array_shift($args)), $args);
2793         }
2794
2795         function format_inline_player($link, $url, $ctype) {
2796
2797                 $entry = "";
2798
2799                 if (strpos($ctype, "audio/") === 0) {
2800
2801                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
2802                                 strpos($_SERVER['HTTP_USER_AGENT'], "Chrome") !== false ||
2803                                 strpos($_SERVER['HTTP_USER_AGENT'], "Safari") !== false )) {
2804
2805                                 $id = 'AUDIO-' . uniqid();
2806
2807                                 $entry .= "<audio id=\"$id\"\" controls>
2808                                         <source type=\"$ctype\" src=\"$url\"></source>
2809                                         </audio>";
2810
2811                                 $entry .= "<span onclick=\"player(this)\"
2812                                         title=\"".__("Click to play")."\" status=\"0\"
2813                                         class=\"player\" audio-id=\"$id\">".__("Play")."</span>";
2814
2815                         } else {
2816
2817                                 $entry .= "<object type=\"application/x-shockwave-flash\"
2818                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
2819                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
2820                                         <param name=\"movie\"
2821                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
2822                                         </object>";
2823                         }
2824
2825                         if ($entry) $entry .= "&nbsp;" . basename($url);
2826
2827                         return $entry;
2828
2829                 }
2830
2831                 return "";
2832
2833 /*              $filename = substr($url, strrpos($url, "/")+1);
2834
2835                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
2836                         $filename . " (" . $ctype . ")" . "</a>"; */
2837
2838         }
2839
2840         function format_article($link, $id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
2841                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2842
2843                 $rv = array();
2844
2845                 $rv['id'] = $id;
2846
2847                 /* we can figure out feed_id from article id anyway, why do we
2848                  * pass feed_id here? let's ignore the argument :( */
2849
2850                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
2851                         WHERE ref_id = '$id'");
2852
2853                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
2854
2855                 $rv['feed_id'] = $feed_id;
2856
2857                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
2858
2859                 $result = db_query($link, "SELECT rtl_content, always_display_enclosures, cache_content FROM ttrss_feeds
2860                         WHERE id = '$feed_id' AND owner_uid = $owner_uid");
2861
2862                 if (db_num_rows($result) == 1) {
2863                         $rtl_content = sql_bool_to_bool(db_fetch_result($result, 0, "rtl_content"));
2864                         $always_display_enclosures = sql_bool_to_bool(db_fetch_result($result, 0, "always_display_enclosures"));
2865                         $cache_content = sql_bool_to_bool(db_fetch_result($result, 0, "cache_content"));
2866                 } else {
2867                         $rtl_content = false;
2868                         $always_display_enclosures = false;
2869                         $cache_content = false;
2870                 }
2871
2872                 if ($rtl_content) {
2873                         $rtl_tag = "dir=\"RTL\"";
2874                         $rtl_class = "RTL";
2875                 } else {
2876                         $rtl_tag = "";
2877                         $rtl_class = "";
2878                 }
2879
2880                 if ($mark_as_read) {
2881                         $result = db_query($link, "UPDATE ttrss_user_entries
2882                                 SET unread = false,last_read = NOW()
2883                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2884
2885                         ccache_update($link, $feed_id, $owner_uid);
2886                 }
2887
2888                 $result = db_query($link, "SELECT id,title,link,content,feed_id,comments,int_id,
2889                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
2890                         (SELECT icon_url FROM ttrss_feeds WHERE id = feed_id) as icon_url,
2891                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
2892                         num_comments,
2893                         tag_cache,
2894                         author,
2895                         orig_feed_id,
2896                         note,
2897                         cached_content
2898                         FROM ttrss_entries,ttrss_user_entries
2899                         WHERE   id = '$id' AND ref_id = id AND owner_uid = $owner_uid");
2900
2901                 if ($result) {
2902
2903                         $line = db_fetch_assoc($result);
2904
2905                         if ($line["icon_url"]) {
2906                                 $feed_icon = "<img src=\"" . $line["icon_url"] . "\">";
2907                         } else {
2908                                 $feed_icon = "&nbsp;";
2909                         }
2910
2911                         $feed_site_url = $line['site_url'];
2912
2913                         $num_comments = $line["num_comments"];
2914                         $entry_comments = "";
2915
2916                         if ($num_comments > 0) {
2917                                 if ($line["comments"]) {
2918                                         $comments_url = htmlspecialchars($line["comments"]);
2919                                 } else {
2920                                         $comments_url = htmlspecialchars($line["link"]);
2921                                 }
2922                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
2923                         } else {
2924                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
2925                                         $entry_comments = "<a target='_blank' href=\"".htmlspecialchars($line["comments"])."\">comments</a>";
2926                                 }
2927                         }
2928
2929                         if ($zoom_mode) {
2930                                 header("Content-Type: text/html");
2931                                 $rv['content'] .= "<html><head>
2932                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
2933                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
2934                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
2935                                         </head><body>";
2936                         }
2937
2938                         $title_escaped = htmlspecialchars($line['title']);
2939
2940                         $rv['content'] .= "<div id=\"PTITLE-$id\" style=\"display : none\">" .
2941                                 truncate_string(strip_tags($line['title']), 15) . "</div>";
2942
2943                         $rv['content'] .= "<div id=\"PTITLE-FULL-$id\" style=\"display : none\">" .
2944                                 strip_tags($line['title']) . "</div>";
2945
2946                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
2947
2948                         $rv['content'] .= "<div onclick=\"return postClicked(event, $id)\"
2949                                 class=\"postHeader\" id=\"POSTHDR-$id\">";
2950
2951                         $entry_author = $line["author"];
2952
2953                         if ($entry_author) {
2954                                 $entry_author = __(" - ") . $entry_author;
2955                         }
2956
2957                         $parsed_updated = make_local_datetime($link, $line["updated"], true,
2958                                 $owner_uid, true);
2959
2960                         $rv['content'] .= "<div class=\"postDate$rtl_class\">$parsed_updated</div>";
2961
2962                         if ($line["link"]) {
2963                                 $rv['content'] .= "<div class='postTitle'><a target='_blank'
2964                                         title=\"".htmlspecialchars($line['title'])."\"
2965                                         href=\"" .
2966                                         htmlspecialchars($line["link"]) . "\">" .
2967                                         $line["title"] .
2968                                         "<span class='author'>$entry_author</span></a></div>";
2969                         } else {
2970                                 $rv['content'] .= "<div class='postTitle'>" . $line["title"] . "$entry_author</div>";
2971                         }
2972
2973                         $tag_cache = $line["tag_cache"];
2974
2975                         if (!$tag_cache)
2976                                 $tags = get_article_tags($link, $id, $owner_uid);
2977                         else
2978                                 $tags = explode(",", $tag_cache);
2979
2980                         $tags_str = format_tags_string($tags, $id);
2981                         $tags_str_full = join(", ", $tags);
2982
2983                         if (!$tags_str_full) $tags_str_full = __("no tags");
2984
2985                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
2986
2987                         $rv['content'] .= "<div class='postTags' style='float : right'>
2988                                 <img src='".theme_image($link, 'images/tag.png')."'
2989                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
2990
2991                         if (!$zoom_mode) {
2992                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
2993                                         <a title=\"".__('Edit tags for this article')."\"
2994                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
2995
2996                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
2997                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
2998                                         position=\"below\">$tags_str_full</div>";
2999
3000                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/art-zoom.png')."\"
3001                                                 class='tagsPic' style=\"cursor : pointer\"
3002                                                 onclick=\"postOpenInNewTab(event, $id)\"
3003                                                 alt='Zoom' title='".__('Open article in new tab')."'>";
3004
3005                                 global $pluginhost;
3006
3007                                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_ARTICLE_BUTTON) as $p) {
3008                                         $rv['content'] .= $p->hook_article_button($line);
3009                                 }
3010
3011
3012                         } else {
3013                                 $tags_str = strip_tags($tags_str);
3014                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
3015                         }
3016                         $rv['content'] .= "</div>";
3017                         $rv['content'] .= "<div clear='both'>$entry_comments</div>";
3018
3019                         if ($line["orig_feed_id"]) {
3020
3021                                 $tmp_result = db_query($link, "SELECT * FROM ttrss_archived_feeds
3022                                         WHERE id = ".$line["orig_feed_id"]);
3023
3024                                 if (db_num_rows($tmp_result) != 0) {
3025
3026                                         $rv['content'] .= "<div clear='both'>";
3027                                         $rv['content'] .= __("Originally from:");
3028
3029                                         $rv['content'] .= "&nbsp;";
3030
3031                                         $tmp_line = db_fetch_assoc($tmp_result);
3032
3033                                         $rv['content'] .= "<a target='_blank'
3034                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
3035                                                 $tmp_line['title'] . "</a>";
3036
3037                                         $rv['content'] .= "&nbsp;";
3038
3039                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3040                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.svg'></a>";
3041
3042                                         $rv['content'] .= "</div>";
3043                                 }
3044                         }
3045
3046                         $rv['content'] .= "</div>";
3047
3048                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3049                                 if ($line['note']) {
3050                                         $rv['content'] .= format_article_note($id, $line['note'], !$zoom_mode);
3051                                 }
3052                         $rv['content'] .= "</div>";
3053
3054                         $rv['content'] .= "<div class=\"postIcon\">" .
3055                                 "<a target=\"_blank\" title=\"".__("Visit the website")."\"$
3056                                 href=\"".htmlspecialchars($feed_site_url)."\">".
3057                                 $feed_icon . "</a></div>";
3058
3059                         $rv['content'] .= "<div class=\"postContent\">";
3060
3061                         // N-grams
3062
3063                         if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_RELATED_THRESHOLD')) {
3064
3065                                 $ngram_result = db_query($link, "SELECT id,title FROM
3066                                                 ttrss_entries,ttrss_user_entries
3067                                         WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
3068                                                 AND similarity(title, '$title_escaped') >= "._NGRAM_TITLE_RELATED_THRESHOLD."
3069                                                 AND title != '$title_escaped'
3070                                                 AND owner_uid = $owner_uid");
3071
3072                                 if (db_num_rows($ngram_result) > 0) {
3073                                         $rv['content'] .= "<div dojoType=\"dijit.form.DropDownButton\">".
3074                                                 "<span>" . __('Related')."</span>";
3075                                         $rv['content'] .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3076
3077                                         while ($nline = db_fetch_assoc($ngram_result)) {
3078                                                 $rv['content'] .= "<div onclick=\"hlOpenInNewTab(null,".$nline['id'].")\"
3079                                                         dojoType=\"dijit.MenuItem\">".$nline['title']."</div>";
3080
3081                                         }
3082                                         $rv['content'] .= "</div></div><br/";
3083                                 }
3084                         }
3085
3086                         if ($cache_content && $line["cached_content"] != "") {
3087                                 $line["content"] =& $line["cached_content"];
3088                         }
3089
3090                         $article_content = sanitize($link, $line["content"], false, $owner_uid,
3091                                 $feed_site_url);
3092
3093                         $rv['content'] .= $article_content;
3094
3095                         $rv['content'] .= format_article_enclosures($link, $id,
3096                                 $always_display_enclosures, $article_content);
3097
3098                         $rv['content'] .= "</div>";
3099
3100                         $rv['content'] .= "</div>";
3101
3102                 }
3103
3104                 if ($zoom_mode) {
3105                         $rv['content'] .= "
3106                                 <div style=\"text-align : center\">
3107                                 <button onclick=\"return window.close()\">".
3108                                         __("Close this window")."</button></div>";
3109                         $rv['content'] .= "</body></html>";
3110                 }
3111
3112                 return $rv;
3113
3114         }
3115
3116         function print_checkpoint($n, $s) {
3117                 $ts = getmicrotime();
3118                 echo sprintf("<!-- CP[$n] %.4f seconds -->", $ts - $s);
3119                 return $ts;
3120         }
3121
3122         function sanitize_tag($tag) {
3123                 $tag = trim($tag);
3124
3125                 $tag = mb_strtolower($tag, 'utf-8');
3126
3127                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3128
3129 //              $tag = str_replace('"', "", $tag);
3130 //              $tag = str_replace("+", " ", $tag);
3131                 $tag = str_replace("technorati tag: ", "", $tag);
3132
3133                 return $tag;
3134         }
3135
3136         function get_self_url_prefix() {
3137                 if (strrpos(SELF_URL_PATH, "/") === strlen(SELF_URL_PATH)-1) {
3138                         return substr(SELF_URL_PATH, 0, strlen(SELF_URL_PATH)-1);
3139                 } else {
3140                         return SELF_URL_PATH;
3141                 }
3142         }
3143
3144         /**
3145          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3146          *
3147          * @return string The Mozilla Firefox feed adding URL.
3148          */
3149         function add_feed_url() {
3150                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3151
3152                 $url_path = get_self_url_prefix() .
3153                         "/public.php?op=subscribe&feed_url=%s";
3154                 return $url_path;
3155         } // function add_feed_url
3156
3157         function encrypt_password($pass, $salt = '', $mode2 = false) {
3158                 if ($salt && $mode2) {
3159                         return "MODE2:" . hash('sha256', $salt . $pass);
3160                 } else if ($salt) {
3161                         return "SHA1X:" . sha1("$salt:$pass");
3162                 } else {
3163                         return "SHA1:" . sha1($pass);
3164                 }
3165         } // function encrypt_password
3166
3167         function load_filters($link, $feed_id, $owner_uid, $action_id = false) {
3168                 $filters = array();
3169
3170                 $cat_id = (int)getFeedCategory($link, $feed_id);
3171
3172                 $result = db_query($link, "SELECT * FROM ttrss_filters2 WHERE
3173                         owner_uid = $owner_uid AND enabled = true");
3174
3175                 $check_cats = join(",", array_merge(
3176                         getParentCategories($link, $cat_id, $owner_uid),
3177                         array($cat_id)));
3178
3179                 while ($line = db_fetch_assoc($result)) {
3180                         $filter_id = $line["id"];
3181
3182                         $result2 = db_query($link, "SELECT
3183                                 r.reg_exp, r.feed_id, r.cat_id, r.cat_filter, t.name AS type_name
3184                                 FROM ttrss_filters2_rules AS r,
3185                                 ttrss_filter_types AS t
3186                                 WHERE
3187                                         (cat_id IS NULL OR cat_id IN ($check_cats)) AND
3188                                         (feed_id IS NULL OR feed_id = '$feed_id') AND
3189                                         filter_type = t.id AND filter_id = '$filter_id'");
3190
3191                         $rules = array();
3192                         $actions = array();
3193
3194                         while ($rule_line = db_fetch_assoc($result2)) {
3195 #                               print_r($rule_line);
3196
3197                                 $rule = array();
3198                                 $rule["reg_exp"] = $rule_line["reg_exp"];
3199                                 $rule["type"] = $rule_line["type_name"];
3200
3201                                 array_push($rules, $rule);
3202                         }
3203
3204                         $result2 = db_query($link, "SELECT a.action_param,t.name AS type_name
3205                                 FROM ttrss_filters2_actions AS a,
3206                                 ttrss_filter_actions AS t
3207                                 WHERE
3208                                         action_id = t.id AND filter_id = '$filter_id'");
3209
3210                         while ($action_line = db_fetch_assoc($result2)) {
3211 #                               print_r($action_line);
3212
3213                                 $action = array();
3214                                 $action["type"] = $action_line["type_name"];
3215                                 $action["param"] = $action_line["action_param"];
3216
3217                                 array_push($actions, $action);
3218                         }
3219
3220
3221                         $filter = array();
3222                         $filter["match_any_rule"] = sql_bool_to_bool($line["match_any_rule"]);
3223                         $filter["rules"] = $rules;
3224                         $filter["actions"] = $actions;
3225
3226                         if (count($rules) > 0 && count($actions) > 0) {
3227                                 array_push($filters, $filter);
3228                         }
3229                 }
3230
3231                 return $filters;
3232         }
3233
3234         function get_score_pic($score) {
3235                 if ($score > 100) {
3236                         return "score_high.png";
3237                 } else if ($score > 0) {
3238                         return "score_half_high.png";
3239                 } else if ($score < -100) {
3240                         return "score_low.png";
3241                 } else if ($score < 0) {
3242                         return "score_half_low.png";
3243                 } else {
3244                         return "score_neutral.png";
3245                 }
3246         }
3247
3248         function feed_has_icon($id) {
3249                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3250         }
3251
3252         function init_connection($link) {
3253                 if ($link) {
3254
3255                         if (DB_TYPE == "pgsql") {
3256                                 pg_query($link, "set client_encoding = 'UTF-8'");
3257                                 pg_set_client_encoding("UNICODE");
3258                                 pg_query($link, "set datestyle = 'ISO, european'");
3259                                 pg_query($link, "set TIME ZONE 0");
3260                         } else {
3261                                 db_query($link, "SET time_zone = '+0:0'");
3262
3263                                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
3264                                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
3265                                 }
3266                         }
3267
3268                         global $pluginhost;
3269
3270                         $pluginhost = new PluginHost($link);
3271                         $pluginhost->load(PLUGINS, $pluginhost::KIND_ALL);
3272
3273                         return true;
3274                 } else {
3275                         print "Unable to connect to database:" . db_last_error();
3276                         return false;
3277                 }
3278         }
3279
3280         function format_tags_string($tags, $id) {
3281
3282                 $tags_str = "";
3283                 $tags_nolinks_str = "";
3284
3285                 $num_tags = 0;
3286
3287                 $tag_limit = 6;
3288
3289                 $formatted_tags = array();
3290
3291                 foreach ($tags as $tag) {
3292                         $num_tags++;
3293                         $tag_escaped = str_replace("'", "\\'", $tag);
3294
3295                         if (mb_strlen($tag) > 30) {
3296                                 $tag = truncate_string($tag, 30);
3297                         }
3298
3299                         $tag_str = "<a href=\"javascript:viewfeed('$tag_escaped')\">$tag</a>";
3300
3301                         array_push($formatted_tags, $tag_str);
3302
3303                         $tmp_tags_str = implode(", ", $formatted_tags);
3304
3305                         if ($num_tags == $tag_limit || mb_strlen($tmp_tags_str) > 150) {
3306                                 break;
3307                         }
3308                 }
3309
3310                 $tags_str = implode(", ", $formatted_tags);
3311
3312                 if ($num_tags < count($tags)) {
3313                         $tags_str .= ", &hellip;";
3314                 }
3315
3316                 if ($num_tags == 0) {
3317                         $tags_str = __("no tags");
3318                 }
3319
3320                 return $tags_str;
3321
3322         }
3323
3324         function format_article_labels($labels, $id) {
3325
3326                 $labels_str = "";
3327
3328                 foreach ($labels as $l) {
3329                         $labels_str .= sprintf("<span class='hlLabelRef'
3330                                 style='color : %s; background-color : %s'>%s</span>",
3331                                         $l[2], $l[3], $l[1]);
3332                         }
3333
3334                 return $labels_str;
3335
3336         }
3337
3338         function format_article_note($id, $note, $allow_edit = true) {
3339
3340                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
3341                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
3342                         ($allow_edit ? __('(edit note)') : "")."</div>$note</div>";
3343
3344                 return $str;
3345         }
3346
3347         function toggle_collapse_cat($link, $cat_id, $mode) {
3348                 if ($cat_id > 0) {
3349                         $mode = bool_to_sql_bool($mode);
3350
3351                         db_query($link, "UPDATE ttrss_feed_categories SET
3352                                 collapsed = $mode WHERE id = '$cat_id' AND owner_uid = " .
3353                                 $_SESSION["uid"]);
3354                 } else {
3355                         $pref_name = '';
3356
3357                         switch ($cat_id) {
3358                         case -1:
3359                                 $pref_name = '_COLLAPSED_SPECIAL';
3360                                 break;
3361                         case -2:
3362                                 $pref_name = '_COLLAPSED_LABELS';
3363                                 break;
3364                         case 0:
3365                                 $pref_name = '_COLLAPSED_UNCAT';
3366                                 break;
3367                         }
3368
3369                         if ($pref_name) {
3370                                 if ($mode) {
3371                                         set_pref($link, $pref_name, 'true');
3372                                 } else {
3373                                         set_pref($link, $pref_name, 'false');
3374                                 }
3375                         }
3376                 }
3377         }
3378
3379
3380         function get_feed_category($link, $feed_cat, $parent_cat_id = false) {
3381                 if ($parent_cat_id) {
3382                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3383                         $parent_insert = "'$parent_cat_id'";
3384                 } else {
3385                         $parent_qpart = "parent_cat IS NULL";
3386                         $parent_insert = "NULL";
3387                 }
3388
3389                 $result = db_query($link,
3390                         "SELECT id FROM ttrss_feed_categories
3391                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3392
3393                 if (db_num_rows($result) == 0) {
3394                         return false;
3395                 } else {
3396                         return db_fetch_result($result, 0, "id");
3397                 }
3398         }
3399
3400         function add_feed_category($link, $feed_cat, $parent_cat_id = false) {
3401
3402                 if (!$feed_cat) return false;
3403
3404                 db_query($link, "BEGIN");
3405
3406                 if ($parent_cat_id) {
3407                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3408                         $parent_insert = "'$parent_cat_id'";
3409                 } else {
3410                         $parent_qpart = "parent_cat IS NULL";
3411                         $parent_insert = "NULL";
3412                 }
3413
3414                 $result = db_query($link,
3415                         "SELECT id FROM ttrss_feed_categories
3416                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3417
3418                 if (db_num_rows($result) == 0) {
3419
3420                         $result = db_query($link,
3421                                 "INSERT INTO ttrss_feed_categories (owner_uid,title,parent_cat)
3422                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat', $parent_insert)");
3423
3424                         db_query($link, "COMMIT");
3425
3426                         return true;
3427                 }
3428
3429                 return false;
3430         }
3431
3432         function getArticleFeed($link, $id) {
3433                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3434                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3435
3436                 if (db_num_rows($result) != 0) {
3437                         return db_fetch_result($result, 0, "feed_id");
3438                 } else {
3439                         return 0;
3440                 }
3441         }
3442
3443         /**
3444          * Fixes incomplete URLs by prepending "http://".
3445          * Also replaces feed:// with http://, and
3446          * prepends a trailing slash if the url is a domain name only.
3447          *
3448          * @param string $url Possibly incomplete URL
3449          *
3450          * @return string Fixed URL.
3451          */
3452         function fix_url($url) {
3453                 if (strpos($url, '://') === false) {
3454                         $url = 'http://' . $url;
3455                 } else if (substr($url, 0, 5) == 'feed:') {
3456                         $url = 'http:' . substr($url, 5);
3457                 }
3458
3459                 //prepend slash if the URL has no slash in it
3460                 // "http://www.example" -> "http://www.example/"
3461                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
3462                         $url .= '/';
3463                 }
3464
3465                 if ($url != "http:///")
3466                         return $url;
3467                 else
3468                         return '';
3469         }
3470
3471         function validate_feed_url($url) {
3472                 $parts = parse_url($url);
3473
3474                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
3475
3476         }
3477
3478         function get_article_enclosures($link, $id) {
3479
3480                 $query = "SELECT * FROM ttrss_enclosures
3481                         WHERE post_id = '$id' AND content_url != ''";
3482
3483                 $rv = array();
3484
3485                 $result = db_query($link, $query);
3486
3487                 if (db_num_rows($result) > 0) {
3488                         while ($line = db_fetch_assoc($result)) {
3489                                 array_push($rv, $line);
3490                         }
3491                 }
3492
3493                 return $rv;
3494         }
3495
3496         function save_email_address($link, $email) {
3497                 // FIXME: implement persistent storage of emails
3498
3499                 if (!$_SESSION['stored_emails'])
3500                         $_SESSION['stored_emails'] = array();
3501
3502                 if (!in_array($email, $_SESSION['stored_emails']))
3503                         array_push($_SESSION['stored_emails'], $email);
3504         }
3505
3506
3507         function get_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
3508
3509                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3510
3511                 $sql_is_cat = bool_to_sql_bool($is_cat);
3512
3513                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
3514                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
3515                         AND owner_uid = " . $owner_uid);
3516
3517                 if (db_num_rows($result) == 1) {
3518                         return db_fetch_result($result, 0, "access_key");
3519                 } else {
3520                         $key = db_escape_string(sha1(uniqid(rand(), true)));
3521
3522                         $result = db_query($link, "INSERT INTO ttrss_access_keys
3523                                 (access_key, feed_id, is_cat, owner_uid)
3524                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
3525
3526                         return $key;
3527                 }
3528                 return false;
3529         }
3530
3531         function get_feeds_from_html($url, $content)
3532         {
3533                 $url     = fix_url($url);
3534                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
3535
3536                 libxml_use_internal_errors(true);
3537
3538                 $doc = new DOMDocument();
3539                 $doc->loadHTML($content);
3540                 $xpath = new DOMXPath($doc);
3541                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
3542                 $feedUrls = array();
3543                 foreach ($entries as $entry) {
3544                         if ($entry->hasAttribute('href')) {
3545                                 $title = $entry->getAttribute('title');
3546                                 if ($title == '') {
3547                                         $title = $entry->getAttribute('type');
3548                                 }
3549                                 $feedUrl = rewrite_relative_url(
3550                                         $baseUrl, $entry->getAttribute('href')
3551                                 );
3552                                 $feedUrls[$feedUrl] = $title;
3553                         }
3554                 }
3555                 return $feedUrls;
3556         }
3557
3558         function is_html($content) {
3559                 return preg_match("/<html|DOCTYPE html/i", substr($content, 0, 20)) !== 0;
3560         }
3561
3562         function url_is_html($url, $login = false, $pass = false) {
3563                 return is_html(fetch_file_contents($url, false, $login, $pass));
3564         }
3565
3566         function print_label_select($link, $name, $value, $attributes = "") {
3567
3568                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
3569                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
3570
3571                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
3572                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
3573
3574                 while ($line = db_fetch_assoc($result)) {
3575
3576                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
3577
3578                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
3579                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
3580
3581                 }
3582
3583 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
3584
3585                 print "</select>";
3586
3587
3588         }
3589
3590         function format_article_enclosures($link, $id, $always_display_enclosures,
3591                                         $article_content) {
3592
3593                 $result = get_article_enclosures($link, $id);
3594                 $rv = '';
3595
3596                 if (count($result) > 0) {
3597
3598                         $entries_html = array();
3599                         $entries = array();
3600                         $entries_inline = array();
3601
3602                         foreach ($result as $line) {
3603
3604                                 $url = $line["content_url"];
3605                                 $ctype = $line["content_type"];
3606
3607                                 if (!$ctype) $ctype = __("unknown type");
3608
3609                                 $filename = substr($url, strrpos($url, "/")+1);
3610
3611                                 $player = format_inline_player($link, $url, $ctype);
3612
3613                                 if ($player) array_push($entries_inline, $player);
3614
3615 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3616 #                                       $filename . " (" . $ctype . ")" . "</a>";
3617
3618                                 $entry = "<div onclick=\"window.open('".htmlspecialchars($url)."')\"
3619                                         dojoType=\"dijit.MenuItem\">$filename ($ctype)</div>";
3620
3621                                 array_push($entries_html, $entry);
3622
3623                                 $entry = array();
3624
3625                                 $entry["type"] = $ctype;
3626                                 $entry["filename"] = $filename;
3627                                 $entry["url"] = $url;
3628
3629                                 array_push($entries, $entry);
3630                         }
3631
3632                         if (!get_pref($link, "STRIP_IMAGES")) {
3633                                 if ($always_display_enclosures ||
3634                                                         !preg_match("/<img/i", $article_content)) {
3635
3636                                         foreach ($entries as $entry) {
3637
3638                                                 if (preg_match("/image/", $entry["type"]) ||
3639                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
3640
3641                                                                 $rv .= "<p><img
3642                                                                 alt=\"".htmlspecialchars($entry["filename"])."\"
3643                                                                 src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
3644
3645                                                 }
3646                                         }
3647                                 }
3648                         }
3649
3650                         if (count($entries_inline) > 0) {
3651                                 $rv .= "<hr clear='both'/>";
3652                                 foreach ($entries_inline as $entry) { $rv .= $entry; };
3653                                 $rv .= "<hr clear='both'/>";
3654                         }
3655
3656                         $rv .= "<br/><div dojoType=\"dijit.form.DropDownButton\">".
3657                                 "<span>" . __('Attachments')."</span>";
3658                         $rv .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3659
3660                         foreach ($entries_html as $entry) { $rv .= $entry; };
3661
3662                         $rv .= "</div></div>";
3663                 }
3664
3665                 return $rv;
3666         }
3667
3668         function getLastArticleId($link) {
3669                 $result = db_query($link, "SELECT MAX(ref_id) AS id FROM ttrss_user_entries
3670                         WHERE owner_uid = " . $_SESSION["uid"]);
3671
3672                 if (db_num_rows($result) == 1) {
3673                         return db_fetch_result($result, 0, "id");
3674                 } else {
3675                         return -1;
3676                 }
3677         }
3678
3679         function build_url($parts) {
3680                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
3681         }
3682
3683         /**
3684          * Converts a (possibly) relative URL to a absolute one.
3685          *
3686          * @param string $url     Base URL (i.e. from where the document is)
3687          * @param string $rel_url Possibly relative URL in the document
3688          *
3689          * @return string Absolute URL
3690          */
3691         function rewrite_relative_url($url, $rel_url) {
3692                 if (strpos($rel_url, "magnet:") === 0) {
3693                         return $rel_url;
3694                 } else if (strpos($rel_url, "://") !== false) {
3695                         return $rel_url;
3696                 } else if (strpos($rel_url, "//") === 0) {
3697                         # protocol-relative URL (rare but they exist)
3698                         return $rel_url;
3699                 } else if (strpos($rel_url, "/") === 0)
3700                 {
3701                         $parts = parse_url($url);
3702                         $parts['path'] = $rel_url;
3703
3704                         return build_url($parts);
3705
3706                 } else {
3707                         $parts = parse_url($url);
3708                         if (!isset($parts['path'])) {
3709                                 $parts['path'] = '/';
3710                         }
3711                         $dir = $parts['path'];
3712                         if (substr($dir, -1) !== '/') {
3713                                 $dir = dirname($parts['path']);
3714                                 $dir !== '/' && $dir .= '/';
3715                         }
3716                         $parts['path'] = $dir . $rel_url;
3717
3718                         return build_url($parts);
3719                 }
3720         }
3721
3722         function sphinx_search($query, $offset = 0, $limit = 30) {
3723                 require_once 'lib/sphinxapi.php';
3724
3725                 $sphinxClient = new SphinxClient();
3726
3727                 $sphinxClient->SetServer('localhost', 9312);
3728                 $sphinxClient->SetConnectTimeout(1);
3729
3730                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
3731                         'feed_title' => 20));
3732
3733                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
3734                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
3735                 $sphinxClient->SetLimits($offset, $limit, 1000);
3736                 $sphinxClient->SetArrayResult(false);
3737                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
3738
3739                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
3740
3741                 $ids = array();
3742
3743                 if (is_array($result['matches'])) {
3744                         foreach (array_keys($result['matches']) as $int_id) {
3745                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
3746                                 array_push($ids, $ref_id);
3747                         }
3748                 }
3749
3750                 return $ids;
3751         }
3752
3753         function cleanup_tags($link, $days = 14, $limit = 1000) {
3754
3755                 if (DB_TYPE == "pgsql") {
3756                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
3757                 } else if (DB_TYPE == "mysql") {
3758                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
3759                 }
3760
3761                 $tags_deleted = 0;
3762
3763                 while ($limit > 0) {
3764                         $limit_part = 500;
3765
3766                         $query = "SELECT ttrss_tags.id AS id
3767                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
3768                                 WHERE post_int_id = int_id AND $interval_query AND
3769                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
3770
3771                         $result = db_query($link, $query);
3772
3773                         $ids = array();
3774
3775                         while ($line = db_fetch_assoc($result)) {
3776                                 array_push($ids, $line['id']);
3777                         }
3778
3779                         if (count($ids) > 0) {
3780                                 $ids = join(",", $ids);
3781                                 print ".";
3782
3783                                 $tmp_result = db_query($link, "DELETE FROM ttrss_tags WHERE id IN ($ids)");
3784                                 $tags_deleted += db_affected_rows($link, $tmp_result);
3785                         } else {
3786                                 break;
3787                         }
3788
3789                         $limit -= $limit_part;
3790                 }
3791
3792                 print "\n";
3793
3794                 return $tags_deleted;
3795         }
3796
3797         function print_user_stylesheet($link) {
3798                 $value = get_pref($link, 'USER_STYLESHEET');
3799
3800                 if ($value) {
3801                         print "<style type=\"text/css\">";
3802                         print str_replace("<br/>", "\n", $value);
3803                         print "</style>";
3804                 }
3805
3806         }
3807
3808         function rewrite_urls($html) {
3809                 libxml_use_internal_errors(true);
3810
3811                 $charset_hack = '<head>
3812                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
3813                 </head>';
3814
3815                 $doc = new DOMDocument();
3816                 $doc->loadHTML($charset_hack . $html);
3817                 $xpath = new DOMXPath($doc);
3818
3819                 $entries = $xpath->query('//*/text()');
3820
3821                 foreach ($entries as $entry) {
3822                         if (strstr($entry->wholeText, "://") !== false) {
3823                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
3824                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
3825
3826                                 if ($text != $entry->wholeText) {
3827                                         $cdoc = new DOMDocument();
3828                                         $cdoc->loadHTML($charset_hack . $text);
3829
3830
3831                                         foreach ($cdoc->childNodes as $cnode) {
3832                                                 $cnode = $doc->importNode($cnode, true);
3833
3834                                                 if ($cnode) {
3835                                                         $entry->parentNode->insertBefore($cnode);
3836                                                 }
3837                                         }
3838
3839                                         $entry->parentNode->removeChild($entry);
3840
3841                                 }
3842                         }
3843                 }
3844
3845                 $node = $doc->getElementsByTagName('body')->item(0);
3846
3847                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
3848                 if ($node)
3849                         return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
3850                 else
3851                         return $html;
3852         }
3853
3854         function filter_to_sql($link, $filter, $owner_uid) {
3855                 $query = array();
3856
3857                 if (DB_TYPE == "pgsql")
3858                         $reg_qpart = "~";
3859                 else
3860                         $reg_qpart = "REGEXP";
3861
3862                 foreach ($filter["rules"] AS $rule) {
3863                         $regexp_valid = preg_match('/' . $rule['reg_exp'] . '/',
3864                                 $rule['reg_exp']) !== FALSE;
3865
3866                         if ($regexp_valid) {
3867
3868                                 $rule['reg_exp'] = db_escape_string($rule['reg_exp']);
3869
3870                                 switch ($rule["type"]) {
3871                                         case "title":
3872                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3873                                                         $rule['reg_exp'] . "')";
3874                                                 break;
3875                                         case "content":
3876                                                 $qpart = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
3877                                                         $rule['reg_exp'] . "')";
3878                                                 break;
3879                                         case "both":
3880                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3881                                                         $rule['reg_exp'] . "') OR LOWER(" .
3882                                                         "ttrss_entries.content) $reg_qpart LOWER('" . $rule['reg_exp'] . "')";
3883                                                 break;
3884                                         case "tag":
3885                                                 $qpart = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
3886                                                         $rule['reg_exp'] . "')";
3887                                                 break;
3888                                         case "link":
3889                                                 $qpart = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
3890                                                         $rule['reg_exp'] . "')";
3891                                                 break;
3892                                         case "author":
3893                                                 $qpart = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
3894                                                         $rule['reg_exp'] . "')";
3895                                                 break;
3896                                 }
3897
3898                                 if (isset($rule["feed_id"]) && $rule["feed_id"] > 0) {
3899                                         $qpart .= " AND feed_id = " . db_escape_string($rule["feed_id"]);
3900                                 }
3901
3902                                 if (isset($rule["cat_id"])) {
3903
3904                                         if ($rule["cat_id"] > 0) {
3905                                                 $children = getChildCategories($link, $rule["cat_id"], $owner_uid);
3906                                                 array_push($children, $rule["cat_id"]);
3907
3908                                                 $children = join(",", $children);
3909
3910                                                 $cat_qpart = "cat_id IN ($children)";
3911                                         } else {
3912                                                 $cat_qpart = "cat_id IS NULL";
3913                                         }
3914
3915                                         $qpart .= " AND $cat_qpart";
3916                                 }
3917
3918                                 array_push($query, "($qpart)");
3919
3920                         }
3921                 }
3922
3923                 if (count($query) > 0) {
3924                         return "(" . join($filter["match_any_rule"] ? "OR" : "AND", $query) . ")";
3925                 } else {
3926                         return "(false)";
3927                 }
3928         }
3929
3930         if (!function_exists('gzdecode')) {
3931                 function gzdecode($string) { // no support for 2nd argument
3932                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
3933                                 base64_encode($string));
3934                 }
3935         }
3936
3937         function get_random_bytes($length) {
3938                 if (function_exists('openssl_random_pseudo_bytes')) {
3939                         return openssl_random_pseudo_bytes($length);
3940                 } else {
3941                         $output = "";
3942
3943                         for ($i = 0; $i < $length; $i++)
3944                                 $output .= chr(mt_rand(0, 255));
3945
3946                         return $output;
3947                 }
3948         }
3949
3950         function read_stdin() {
3951                 $fp = fopen("php://stdin", "r");
3952
3953                 if ($fp) {
3954                         $line = trim(fgets($fp));
3955                         fclose($fp);
3956                         return $line;
3957                 }
3958
3959                 return null;
3960         }
3961
3962         function tmpdirname($path, $prefix) {
3963                 // Use PHP's tmpfile function to create a temporary
3964                 // directory name. Delete the file and keep the name.
3965                 $tempname = tempnam($path,$prefix);
3966                 if (!$tempname)
3967                         return false;
3968
3969                 if (!unlink($tempname))
3970                         return false;
3971
3972        return $tempname;
3973         }
3974
3975         function getFeedCategory($link, $feed) {
3976                 $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
3977                         WHERE id = '$feed'");
3978
3979                 if (db_num_rows($result) > 0) {
3980                         return db_fetch_result($result, 0, "cat_id");
3981                 } else {
3982                         return false;
3983                 }
3984
3985         }
3986
3987         function implements_interface($class, $interface) {
3988                 return in_array($interface, class_implements($class));
3989         }
3990
3991 ?>