include/functions.php

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