include/functions.php

   1 <?php
   2         define('EXPECTED_CONFIG_VERSION', 26);
   3         define('SCHEMA_VERSION', 114);
   4
   5         define('LABEL_BASE_INDEX', -1024);
   6         define('PLUGIN_FEED_BASE_INDEX', -128);
   7
   8         $fetch_last_error = false;
   9         $fetch_last_error_code = false;
  10         $pluginhost = false;
  11
  12         function __autoload($class) {
  13                 $class_file = str_replace("_", "/", strtolower(basename($class)));
  14
  15                 $file = dirname(__FILE__)."/../classes/$class_file.php";
  16
  17                 if (file_exists($file)) {
  18                         require $file;
  19                 }
  20
  21         }
  22
  23         mb_internal_encoding("UTF-8");
  24         date_default_timezone_set('UTC');
  25         if (defined('E_DEPRECATED')) {
  26                 error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
  27         } else {
  28                 error_reporting(E_ALL & ~E_NOTICE);
  29         }
  30
  31         require_once 'config.php';
  32
  33         if (DB_TYPE == "pgsql") {
  34                 define('SUBSTRING_FOR_DATE', 'SUBSTRING_FOR_DATE');
  35         } else {
  36                 define('SUBSTRING_FOR_DATE', 'SUBSTRING');
  37         }
  38
  39         define('THEME_VERSION_REQUIRED', 1.1);
  40
  41         /**
  42          * Return available translations names.
  43          *
  44          * @access public
  45          * @return array A array of available translations.
  46          */
  47         function get_translations() {
  48                 $tr = array(
  49                                         "auto"  => "Detect automatically",
  50                                         "ca_CA" => "Català",
  51                                         "cs_CZ" => "Česky",
  52                                         "en_US" => "English",
  53                                         "es_ES" => "Español",
  54                                         "de_DE" => "Deutsch",
  55                                         "fr_FR" => "Français",
  56                                         "hu_HU" => "Magyar (Hungarian)",
  57                                         "it_IT" => "Italiano",
  58                                         "ja_JP" => "日本語 (Japanese)",
  59                                         "lv_LV" => "Latviešu",
  60                                         "nb_NO" => "Norwegian bokmål",
  61                                         "nl_NL" => "Dutch",
  62                                         "pl_PL" => "Polski",
  63                                         "ru_RU" => "Русский",
  64                                         "pt_BR" => "Portuguese/Brazil",
  65                                         "zh_CN" => "Simplified Chinese",
  66                                         "sv_SE" => "Svenska",
  67                                         "fi_FI" => "Suomi");
  68
  69                 return $tr;
  70         }
  71
  72         require_once "lib/accept-to-gettext.php";
  73         require_once "lib/gettext/gettext.inc";
  74
  75
  76         function startup_gettext() {
  77
  78                 # Get locale from Accept-Language header
  79                 $lang = al2gt(array_keys(get_translations()), "text/html");
  80
  81                 if (defined('_TRANSLATION_OVERRIDE_DEFAULT')) {
  82                         $lang = _TRANSLATION_OVERRIDE_DEFAULT;
  83                 }
  84
  85                 if ($_SESSION["language"] && $_SESSION["language"] != "auto") {
  86                         $lang = $_SESSION["language"];
  87                 }
  88
  89                 if ($lang) {
  90                         if (defined('LC_MESSAGES')) {
  91                                 _setlocale(LC_MESSAGES, $lang);
  92                         } else if (defined('LC_ALL')) {
  93                                 _setlocale(LC_ALL, $lang);
  94                         }
  95
  96                         _bindtextdomain("messages", "locale");
  97
  98                         _textdomain("messages");
  99                         _bind_textdomain_codeset("messages", "UTF-8");
 100                 }
 101         }
 102
 103         startup_gettext();
 104
 105         require_once 'db-prefs.php';
 106         require_once 'version.php';
 107         require_once 'ccache.php';
 108         require_once 'labels.php';
 109
 110         define('SELF_USER_AGENT', 'Tiny Tiny RSS/' . VERSION . ' (http://tt-rss.org/)');
 111         ini_set('user_agent', SELF_USER_AGENT);
 112
 113         require_once 'lib/pubsubhubbub/publisher.php';
 114
 115         $tz_offset = -1;
 116         $utc_tz = new DateTimeZone('UTC');
 117         $schema_version = false;
 118
 119         /**
 120          * Print a timestamped debug message.
 121          *
 122          * @param string $msg The debug message.
 123          * @return void
 124          */
 125         function _debug($msg) {
 126                 $ts = strftime("%H:%M:%S", time());
 127                 if (function_exists('posix_getpid')) {
 128                         $ts = "$ts/" . posix_getpid();
 129                 }
 130
 131                 if (!(defined('QUIET') && QUIET)) {
 132                         print "[$ts] $msg\n";
 133                 }
 134
 135                 if (defined('LOGFILE'))  {
 136                         $fp = fopen(LOGFILE, 'a+');
 137
 138                         if ($fp) {
 139                                 fputs($fp, "[$ts] $msg\n");
 140                                 fclose($fp);
 141                         }
 142                 }
 143
 144         } // function _debug
 145
 146         /**
 147          * Purge a feed old posts.
 148          *
 149          * @param mixed $link A database connection.
 150          * @param mixed $feed_id The id of the purged feed.
 151          * @param mixed $purge_interval Olderness of purged posts.
 152          * @param boolean $debug Set to True to enable the debug. False by default.
 153          * @access public
 154          * @return void
 155          */
 156         function purge_feed($link, $feed_id, $purge_interval, $debug = false) {
 157
 158                 if (!$purge_interval) $purge_interval = feed_purge_interval($link, $feed_id);
 159
 160                 $rows = -1;
 161
 162                 $result = db_query($link,
 163                         "SELECT owner_uid FROM ttrss_feeds WHERE id = '$feed_id'");
 164
 165                 $owner_uid = false;
 166
 167                 if (db_num_rows($result) == 1) {
 168                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 169                 }
 170
 171                 if ($purge_interval == -1 || !$purge_interval) {
 172                         if ($owner_uid) {
 173                                 ccache_update($link, $feed_id, $owner_uid);
 174                         }
 175                         return;
 176                 }
 177
 178                 if (!$owner_uid) return;
 179
 180                 if (FORCE_ARTICLE_PURGE == 0) {
 181                         $purge_unread = get_pref($link, "PURGE_UNREAD_ARTICLES",
 182                                 $owner_uid, false);
 183                 } else {
 184                         $purge_unread = true;
 185                         $purge_interval = FORCE_ARTICLE_PURGE;
 186                 }
 187
 188                 if (!$purge_unread) $query_limit = " unread = false AND ";
 189
 190                 if (DB_TYPE == "pgsql") {
 191                         $pg_version = get_pgsql_version($link);
 192
 193                         if (preg_match("/^7\./", $pg_version) || preg_match("/^8\.0/", $pg_version)) {
 194
 195                                 $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 196                                         ttrss_entries.id = ref_id AND
 197                                         marked = false AND
 198                                         feed_id = '$feed_id' AND
 199                                         $query_limit
 200                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 201
 202                         } else {
 203
 204                                 $result = db_query($link, "DELETE FROM ttrss_user_entries
 205                                         USING ttrss_entries
 206                                         WHERE ttrss_entries.id = ref_id AND
 207                                         marked = false AND
 208                                         feed_id = '$feed_id' AND
 209                                         $query_limit
 210                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 211                         }
 212
 213                         $rows = pg_affected_rows($result);
 214
 215                 } else {
 216
 217 /*                      $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 218                                 marked = false AND feed_id = '$feed_id' AND
 219                                 (SELECT date_updated FROM ttrss_entries WHERE
 220                                         id = ref_id) < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)"); */
 221
 222                         $result = db_query($link, "DELETE FROM ttrss_user_entries
 223                                 USING ttrss_user_entries, ttrss_entries
 224                                 WHERE ttrss_entries.id = ref_id AND
 225                                 marked = false AND
 226                                 feed_id = '$feed_id' AND
 227                                 $query_limit
 228                                 ttrss_entries.date_updated < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)");
 229
 230                         $rows = mysql_affected_rows($link);
 231
 232                 }
 233
 234                 ccache_update($link, $feed_id, $owner_uid);
 235
 236                 if ($debug) {
 237                         _debug("Purged feed $feed_id ($purge_interval): deleted $rows articles");
 238                 }
 239
 240                 return $rows;
 241         } // function purge_feed
 242
 243         function feed_purge_interval($link, $feed_id) {
 244
 245                 $result = db_query($link, "SELECT purge_interval, owner_uid FROM ttrss_feeds
 246                         WHERE id = '$feed_id'");
 247
 248                 if (db_num_rows($result) == 1) {
 249                         $purge_interval = db_fetch_result($result, 0, "purge_interval");
 250                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 251
 252                         if ($purge_interval == 0) $purge_interval = get_pref($link,
 253                                 'PURGE_OLD_DAYS', $owner_uid);
 254
 255                         return $purge_interval;
 256
 257                 } else {
 258                         return -1;
 259                 }
 260         }
 261
 262         function purge_orphans($link, $do_output = false) {
 263
 264                 // purge orphaned posts in main content table
 265                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
 266                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
 267
 268                 if ($do_output) {
 269                         $rows = db_affected_rows($link, $result);
 270                         _debug("Purged $rows orphaned posts.");
 271                 }
 272         }
 273
 274         function get_feed_update_interval($link, $feed_id) {
 275                 $result = db_query($link, "SELECT owner_uid, update_interval FROM
 276                         ttrss_feeds WHERE id = '$feed_id'");
 277
 278                 if (db_num_rows($result) == 1) {
 279                         $update_interval = db_fetch_result($result, 0, "update_interval");
 280                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 281
 282                         if ($update_interval != 0) {
 283                                 return $update_interval;
 284                         } else {
 285                                 return get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $owner_uid, false);
 286                         }
 287
 288                 } else {
 289                         return -1;
 290                 }
 291         }
 292
 293         function fetch_file_contents($url, $type = false, $login = false, $pass = false, $post_query = false, $timeout = false, $timestamp = 0) {
 294
 295                 global $fetch_last_error;
 296                 global $fetch_last_error_code;
 297
 298                 if (function_exists('curl_init') && !ini_get("open_basedir")) {
 299
 300                         if (ini_get("safe_mode")) {
 301                                 $ch = curl_init(geturl($url));
 302                         } else {
 303                                 $ch = curl_init($url);
 304                         }
 305
 306                         if ($timestamp) {
 307                                 curl_setopt($ch, CURLOPT_HTTPHEADER,
 308                                         array("If-Modified-Since: ".gmdate('D, d M Y H:i:s \G\M\T', $timestamp)));
 309                         }
 310
 311                         curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout ? $timeout : 15);
 312                         curl_setopt($ch, CURLOPT_TIMEOUT, $timeout ? $timeout : 45);
 313                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, !ini_get("safe_mode"));
 314                         curl_setopt($ch, CURLOPT_MAXREDIRS, 20);
 315                         curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
 316                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 317                         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 318                         curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 319                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 320                         curl_setopt($ch, CURLOPT_ENCODING , "gzip");
 321                         curl_setopt($ch, CURLOPT_REFERER, $url);
 322
 323                         if ($post_query) {
 324                                 curl_setopt($ch, CURLOPT_POST, true);
 325                                 curl_setopt($ch, CURLOPT_POSTFIELDS, $post_query);
 326                         }
 327
 328                         if ($login && $pass)
 329                                 curl_setopt($ch, CURLOPT_USERPWD, "$login:$pass");
 330
 331                         $contents = @curl_exec($ch);
 332
 333                         if (curl_errno($ch) === 23 || curl_errno($ch) === 61) {
 334                                 curl_setopt($ch, CURLOPT_ENCODING, 'none');
 335                                 $contents = @curl_exec($ch);
 336                         }
 337
 338                         if ($contents === false) {
 339                                 $fetch_last_error = curl_errno($ch) . " " . curl_error($ch);
 340                                 curl_close($ch);
 341                                 return false;
 342                         }
 343
 344                         $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 345                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 346
 347                         $fetch_last_error_code = $http_code;
 348
 349                         if ($http_code != 200 || $type && strpos($content_type, "$type") === false) {
 350                                 if (curl_errno($ch) != 0) {
 351                                         $fetch_last_error = curl_errno($ch) . " " . curl_error($ch);
 352                                 } else {
 353                                         $fetch_last_error = "HTTP Code: $http_code";
 354                                 }
 355                                 curl_close($ch);
 356                                 return false;
 357                         }
 358
 359                         curl_close($ch);
 360
 361                         return $contents;
 362                 } else {
 363                         if ($login && $pass){
 364                                 $url_parts = array();
 365
 366                                 preg_match("/(^[^:]*):\/\/(.*)/", $url, $url_parts);
 367
 368                                 $pass = urlencode($pass);
 369
 370                                 if ($url_parts[1] && $url_parts[2]) {
 371                                         $url = $url_parts[1] . "://$login:$pass@" . $url_parts[2];
 372                                 }
 373                         }
 374
 375                         $data = @file_get_contents($url);
 376
 377                         @$gzdecoded = gzdecode($data);
 378                         if ($gzdecoded) $data = $gzdecoded;
 379
 380                         if (!$data && function_exists('error_get_last')) {
 381                                 $error = error_get_last();
 382                                 $fetch_last_error = $error["message"];
 383                         }
 384                         return $data;
 385                 }
 386
 387         }
 388
 389         /**
 390          * Try to determine the favicon URL for a feed.
 391          * adapted from wordpress favicon plugin by Jeff Minard (http://thecodepro.com/)
 392          * http://dev.wp-plugins.org/file/favatars/trunk/favatars.php
 393          *
 394          * @param string $url A feed or page URL
 395          * @access public
 396          * @return mixed The favicon URL, or false if none was found.
 397          */
 398         function get_favicon_url($url) {
 399
 400                 $favicon_url = false;
 401
 402                 if ($html = @fetch_file_contents($url)) {
 403
 404                         libxml_use_internal_errors(true);
 405
 406                         $doc = new DOMDocument();
 407                         $doc->loadHTML($html);
 408                         $xpath = new DOMXPath($doc);
 409
 410                         $base = $xpath->query('/html/head/base');
 411                         foreach ($base as $b) {
 412                                 $url = $b->getAttribute("href");
 413                                 break;
 414                         }
 415
 416                         $entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon"]');
 417                         if (count($entries) > 0) {
 418                                 foreach ($entries as $entry) {
 419                                         $favicon_url = rewrite_relative_url($url, $entry->getAttribute("href"));
 420                                         break;
 421                                 }
 422                         }
 423                 }
 424
 425                 if (!$favicon_url)
 426                         $favicon_url = rewrite_relative_url($url, "/favicon.ico");
 427
 428                 return $favicon_url;
 429         } // function get_favicon_url
 430
 431         function check_feed_favicon($site_url, $feed, $link) {
 432 #               print "FAVICON [$site_url]: $favicon_url\n";
 433
 434                 $icon_file = ICONS_DIR . "/$feed.ico";
 435
 436                 if (!file_exists($icon_file)) {
 437                         $favicon_url = get_favicon_url($site_url);
 438
 439                         if ($favicon_url) {
 440                                 // Limiting to "image" type misses those served with text/plain
 441                                 $contents = fetch_file_contents($favicon_url); // , "image");
 442
 443                                 if ($contents) {
 444                                         // Crude image type matching.
 445                                         // Patterns gleaned from the file(1) source code.
 446                                         if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
 447                                                 // 0       string  \000\000\001\000        MS Windows icon resource
 448                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
 449                                         }
 450                                         elseif (preg_match('/^GIF8/', $contents)) {
 451                                                 // 0       string          GIF8            GIF image data
 452                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
 453                                         }
 454                                         elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
 455                                                 // 0       string          \x89PNG\x0d\x0a\x1a\x0a         PNG image data
 456                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
 457                                         }
 458                                         elseif (preg_match('/^\xff\xd8/', $contents)) {
 459                                                 // 0       beshort         0xffd8          JPEG image data
 460                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
 461                                         }
 462                                         else {
 463                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
 464                                                 $contents = "";
 465                                         }
 466                                 }
 467
 468                                 if ($contents) {
 469                                         $fp = @fopen($icon_file, "w");
 470
 471                                         if ($fp) {
 472                                                 fwrite($fp, $contents);
 473                                                 fclose($fp);
 474                                                 chmod($icon_file, 0644);
 475                                         }
 476                                 }
 477                         }
 478                 }
 479         }
 480
 481         function print_select($id, $default, $values, $attributes = "") {
 482                 print "<select name=\"$id\" id=\"$id\" $attributes>";
 483                 foreach ($values as $v) {
 484                         if ($v == $default)
 485                                 $sel = "selected=\"1\"";
 486                          else
 487                                 $sel = "";
 488
 489                         $v = trim($v);
 490
 491                         print "<option value=\"$v\" $sel>$v</option>";
 492                 }
 493                 print "</select>";
 494         }
 495
 496         function print_select_hash($id, $default, $values, $attributes = "") {
 497                 print "<select name=\"$id\" id='$id' $attributes>";
 498                 foreach (array_keys($values) as $v) {
 499                         if ($v == $default)
 500                                 $sel = 'selected="selected"';
 501                          else
 502                                 $sel = "";
 503
 504                         $v = trim($v);
 505
 506                         print "<option $sel value=\"$v\">".$values[$v]."</option>";
 507                 }
 508
 509                 print "</select>";
 510         }
 511
 512         function print_radio($id, $default, $true_is, $values, $attributes = "") {
 513                 foreach ($values as $v) {
 514
 515                         if ($v == $default)
 516                                 $sel = "checked";
 517                          else
 518                                 $sel = "";
 519
 520                         if ($v == $true_is) {
 521                                 $sel .= " value=\"1\"";
 522                         } else {
 523                                 $sel .= " value=\"0\"";
 524                         }
 525
 526                         print "<input class=\"noborder\" dojoType=\"dijit.form.RadioButton\"
 527                                 type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 528
 529                 }
 530         }
 531
 532         function initialize_user_prefs($link, $uid, $profile = false) {
 533
 534                 $uid = db_escape_string($link, $uid);
 535
 536                 if (!$profile) {
 537                         $profile = "NULL";
 538                         $profile_qpart = "AND profile IS NULL";
 539                 } else {
 540                         $profile_qpart = "AND profile = '$profile'";
 541                 }
 542
 543                 if (get_schema_version($link) < 63) $profile_qpart = "";
 544
 545                 db_query($link, "BEGIN");
 546
 547                 $result = db_query($link, "SELECT pref_name,def_value FROM ttrss_prefs");
 548
 549                 $u_result = db_query($link, "SELECT pref_name
 550                         FROM ttrss_user_prefs WHERE owner_uid = '$uid' $profile_qpart");
 551
 552                 $active_prefs = array();
 553
 554                 while ($line = db_fetch_assoc($u_result)) {
 555                         array_push($active_prefs, $line["pref_name"]);
 556                 }
 557
 558                 while ($line = db_fetch_assoc($result)) {
 559                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 560 //                              print "adding " . $line["pref_name"] . "<br>";
 561
 562                                 $line["def_value"] = db_escape_string($link, $line["def_value"]);
 563                                 $line["pref_name"] = db_escape_string($link, $line["pref_name"]);
 564
 565                                 if (get_schema_version($link) < 63) {
 566                                         db_query($link, "INSERT INTO ttrss_user_prefs
 567                                                 (owner_uid,pref_name,value) VALUES
 568                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 569
 570                                 } else {
 571                                         db_query($link, "INSERT INTO ttrss_user_prefs
 572                                                 (owner_uid,pref_name,value, profile) VALUES
 573                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."', $profile)");
 574                                 }
 575
 576                         }
 577                 }
 578
 579                 db_query($link, "COMMIT");
 580
 581         }
 582
 583         function get_ssl_certificate_id() {
 584                 if ($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"]) {
 585                         return sha1($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"] .
 586                                 $_SERVER["REDIRECT_SSL_CLIENT_V_START"] .
 587                                 $_SERVER["REDIRECT_SSL_CLIENT_V_END"] .
 588                                 $_SERVER["REDIRECT_SSL_CLIENT_S_DN"]);
 589                 }
 590                 return "";
 591         }
 592
 593         function authenticate_user($link, $login, $password, $check_only = false) {
 594
 595                 if (!SINGLE_USER_MODE) {
 596                         $user_id = false;
 597
 598                         global $pluginhost;
 599                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_AUTH_USER) as $plugin) {
 600
 601                                 $user_id = (int) $plugin->authenticate($login, $password);
 602
 603                                 if ($user_id) {
 604                                         $_SESSION["auth_module"] = strtolower(get_class($plugin));
 605                                         break;
 606                                 }
 607                         }
 608
 609                         if ($user_id && !$check_only) {
 610                                 @session_start();
 611
 612                                 $_SESSION["uid"] = $user_id;
 613
 614                                 $result = db_query($link, "SELECT login,access_level,pwd_hash FROM ttrss_users
 615                                         WHERE id = '$user_id'");
 616
 617                                 $_SESSION["name"] = db_fetch_result($result, 0, "login");
 618                                 $_SESSION["access_level"] = db_fetch_result($result, 0, "access_level");
 619                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 620
 621                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 622                                         $_SESSION["uid"]);
 623
 624                                 $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 625                                 $_SESSION["user_agent"] = sha1($_SERVER['HTTP_USER_AGENT']);
 626                                 $_SESSION["pwd_hash"] = db_fetch_result($result, 0, "pwd_hash");
 627
 628                                 $_SESSION["last_version_check"] = time();
 629
 630                                 initialize_user_prefs($link, $_SESSION["uid"]);
 631
 632                                 return true;
 633                         }
 634
 635                         return false;
 636
 637                 } else {
 638
 639                         $_SESSION["uid"] = 1;
 640                         $_SESSION["name"] = "admin";
 641                         $_SESSION["access_level"] = 10;
 642
 643                         $_SESSION["hide_hello"] = true;
 644                         $_SESSION["hide_logout"] = true;
 645
 646                         $_SESSION["auth_module"] = false;
 647
 648                         if (!$_SESSION["csrf_token"]) {
 649                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 650                         }
 651
 652                         $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 653
 654                         initialize_user_prefs($link, $_SESSION["uid"]);
 655
 656                         return true;
 657                 }
 658         }
 659
 660         function make_password($length = 8) {
 661
 662                 $password = "";
 663                 $possible = "0123456789abcdfghjkmnpqrstvwxyzABCDFGHJKMNPQRSTVWXYZ";
 664
 665         $i = 0;
 666
 667                 while ($i < $length) {
 668                         $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 669
 670                         if (!strstr($password, $char)) {
 671                                 $password .= $char;
 672                                 $i++;
 673                         }
 674                 }
 675                 return $password;
 676         }
 677
 678         // this is called after user is created to initialize default feeds, labels
 679         // or whatever else
 680
 681         // user preferences are checked on every login, not here
 682
 683         function initialize_user($link, $uid) {
 684
 685                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 686                         values ('$uid', 'Tiny Tiny RSS: New Releases',
 687                         'http://tt-rss.org/releases.rss')");
 688
 689                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 690                         values ('$uid', 'Tiny Tiny RSS: Forum',
 691                                 'http://tt-rss.org/forum/rss.php')");
 692         }
 693
 694         function logout_user() {
 695                 session_destroy();
 696                 if (isset($_COOKIE[session_name()])) {
 697                    setcookie(session_name(), '', time()-42000, '/');
 698                 }
 699         }
 700
 701         function validate_csrf($csrf_token) {
 702                 return $csrf_token == $_SESSION['csrf_token'];
 703         }
 704
 705         function load_user_plugins($link, $owner_uid) {
 706                 if ($owner_uid) {
 707                         $plugins = get_pref($link, "_ENABLED_PLUGINS", $owner_uid);
 708
 709                         global $pluginhost;
 710                         $pluginhost->load($plugins, $pluginhost::KIND_USER, $owner_uid);
 711
 712                         if (get_schema_version($link) > 100) {
 713                                 $pluginhost->load_data();
 714                         }
 715                 }
 716         }
 717
 718         function login_sequence($link) {
 719                 $_SESSION["prefs_cache"] = false;
 720
 721                 if (SINGLE_USER_MODE) {
 722                         @session_start();
 723                         authenticate_user($link, "admin", null);
 724                         cache_prefs($link);
 725                         load_user_plugins($link, $_SESSION["uid"]);
 726                 } else {
 727                         if (!$_SESSION["uid"] || !validate_session($link)) {
 728
 729                                 if (AUTH_AUTO_LOGIN && authenticate_user($link, null, null)) {
 730                                     $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 731                                 } else {
 732                                          authenticate_user($link, null, null, true);
 733                                 }
 734
 735                                 if (!$_SESSION["uid"]) render_login_form($link);
 736
 737                         } else {
 738                                 /* bump login timestamp */
 739                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 740                                         $_SESSION["uid"]);
 741                                 $_SESSION["last_login_update"] = time();
 742                         }
 743
 744                         if ($_SESSION["uid"] && $_SESSION["language"] && SESSION_COOKIE_LIFETIME > 0) {
 745                                 setcookie("ttrss_lang", $_SESSION["language"],
 746                                         time() + SESSION_COOKIE_LIFETIME);
 747                         }
 748
 749                         if ($_SESSION["uid"]) {
 750                                 cache_prefs($link);
 751                                 load_user_plugins($link, $_SESSION["uid"]);
 752
 753                                 /* cleanup ccache */
 754
 755                                 db_query($link, "DELETE FROM ttrss_counters_cache WHERE owner_uid = ".
 756                                         $_SESSION["uid"] . " AND
 757                                                 (SELECT COUNT(id) FROM ttrss_feeds WHERE
 758                                                         ttrss_feeds.id = feed_id) = 0");
 759
 760                                 db_query($link, "DELETE FROM ttrss_cat_counters_cache WHERE owner_uid = ".
 761                                         $_SESSION["uid"] . " AND
 762                                                 (SELECT COUNT(id) FROM ttrss_feed_categories WHERE
 763                                                         ttrss_feed_categories.id = feed_id) = 0");
 764
 765                         }
 766
 767                 }
 768         }
 769
 770         function truncate_string($str, $max_len, $suffix = '&hellip;') {
 771                 if (mb_strlen($str, "utf-8") > $max_len - 3) {
 772                         return mb_substr($str, 0, $max_len, "utf-8") . $suffix;
 773                 } else {
 774                         return $str;
 775                 }
 776         }
 777
 778         function convert_timestamp($timestamp, $source_tz, $dest_tz) {
 779
 780                 try {
 781                         $source_tz = new DateTimeZone($source_tz);
 782                 } catch (Exception $e) {
 783                         $source_tz = new DateTimeZone('UTC');
 784                 }
 785
 786                 try {
 787                         $dest_tz = new DateTimeZone($dest_tz);
 788                 } catch (Exception $e) {
 789                         $dest_tz = new DateTimeZone('UTC');
 790                 }
 791
 792                 $dt = new DateTime(date('Y-m-d H:i:s', $timestamp), $source_tz);
 793                 return $dt->format('U') + $dest_tz->getOffset($dt);
 794         }
 795
 796         function make_local_datetime($link, $timestamp, $long, $owner_uid = false,
 797                                         $no_smart_dt = false) {
 798
 799                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 800                 if (!$timestamp) $timestamp = '1970-01-01 0:00';
 801
 802                 global $utc_tz;
 803                 global $tz_offset;
 804
 805                 # We store date in UTC internally
 806                 $dt = new DateTime($timestamp, $utc_tz);
 807
 808                 if ($tz_offset == -1) {
 809
 810                         $user_tz_string = get_pref($link, 'USER_TIMEZONE', $owner_uid);
 811
 812                         try {
 813                                 $user_tz = new DateTimeZone($user_tz_string);
 814                         } catch (Exception $e) {
 815                                 $user_tz = $utc_tz;
 816                         }
 817
 818                         $tz_offset = $user_tz->getOffset($dt);
 819                 }
 820
 821                 $user_timestamp = $dt->format('U') + $tz_offset;
 822
 823                 if (!$no_smart_dt) {
 824                         return smart_date_time($link, $user_timestamp,
 825                                 $tz_offset, $owner_uid);
 826                 } else {
 827                         if ($long)
 828                                 $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 829                         else
 830                                 $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 831
 832                         return date($format, $user_timestamp);
 833                 }
 834         }
 835
 836         function smart_date_time($link, $timestamp, $tz_offset = 0, $owner_uid = false) {
 837                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 838
 839                 if (date("Y.m.d", $timestamp) == date("Y.m.d", time() + $tz_offset)) {
 840                         return date("G:i", $timestamp);
 841                 } else if (date("Y", $timestamp) == date("Y", time() + $tz_offset)) {
 842                         $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 843                         return date($format, $timestamp);
 844                 } else {
 845                         $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 846                         return date($format, $timestamp);
 847                 }
 848         }
 849
 850         function sql_bool_to_bool($s) {
 851                 if ($s == "t" || $s == "1" || strtolower($s) == "true") {
 852                         return true;
 853                 } else {
 854                         return false;
 855                 }
 856         }
 857
 858         function bool_to_sql_bool($s) {
 859                 if ($s) {
 860                         return "true";
 861                 } else {
 862                         return "false";
 863                 }
 864         }
 865
 866         // Session caching removed due to causing wrong redirects to upgrade
 867         // script when get_schema_version() is called on an obsolete session
 868         // created on a previous schema version.
 869         function get_schema_version($link, $nocache = false) {
 870                 global $schema_version;
 871
 872                 if (!$schema_version) {
 873                         $result = db_query($link, "SELECT schema_version FROM ttrss_version");
 874                         $version = db_fetch_result($result, 0, "schema_version");
 875                         $schema_version = $version;
 876                         return $version;
 877                 } else {
 878                         return $schema_version;
 879                 }
 880         }
 881
 882         function sanity_check($link) {
 883                 require_once 'errors.php';
 884
 885                 $error_code = 0;
 886                 $schema_version = get_schema_version($link, true);
 887
 888                 if ($schema_version != SCHEMA_VERSION) {
 889                         $error_code = 5;
 890                 }
 891
 892                 if (DB_TYPE == "mysql") {
 893                         $result = db_query($link, "SELECT true", false);
 894                         if (db_num_rows($result) != 1) {
 895                                 $error_code = 10;
 896                         }
 897                 }
 898
 899                 if (db_escape_string($link, "testTEST") != "testTEST") {
 900                         $error_code = 12;
 901                 }
 902
 903                 return array("code" => $error_code, "message" => $ERRORS[$error_code]);
 904         }
 905
 906         function file_is_locked($filename) {
 907                 if (function_exists('flock')) {
 908                         $fp = @fopen(LOCK_DIRECTORY . "/$filename", "r");
 909                         if ($fp) {
 910                                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 911                                         flock($fp, LOCK_UN);
 912                                         fclose($fp);
 913                                         return false;
 914                                 }
 915                                 fclose($fp);
 916                                 return true;
 917                         } else {
 918                                 return false;
 919                         }
 920                 }
 921                 return true; // consider the file always locked and skip the test
 922         }
 923
 924         function make_lockfile($filename) {
 925                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
 926
 927                 if ($fp && flock($fp, LOCK_EX | LOCK_NB)) {
 928                         if (function_exists('posix_getpid')) {
 929                                 fwrite($fp, posix_getpid() . "\n");
 930                         }
 931                         return $fp;
 932                 } else {
 933                         return false;
 934                 }
 935         }
 936
 937         function make_stampfile($filename) {
 938                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
 939
 940                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 941                         fwrite($fp, time() . "\n");
 942                         flock($fp, LOCK_UN);
 943                         fclose($fp);
 944                         return true;
 945                 } else {
 946                         return false;
 947                 }
 948         }
 949
 950         function sql_random_function() {
 951                 if (DB_TYPE == "mysql") {
 952                         return "RAND()";
 953                 } else {
 954                         return "RANDOM()";
 955                 }
 956         }
 957
 958         function catchup_feed($link, $feed, $cat_view, $owner_uid = false, $max_id = false, $mode = 'all') {
 959
 960                         if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 961
 962                         //if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
 963
 964                         // Todo: all this interval stuff needs some generic generator function
 965
 966                         $date_qpart = "false";
 967
 968                         switch ($mode) {
 969                         case "1day":
 970                                 if (DB_TYPE == "pgsql") {
 971                                         $date_qpart = "date_entered < NOW() - INTERVAL '1 day' ";
 972                                 } else {
 973                                         $date_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 1 DAY) ";
 974                                 }
 975                                 break;
 976                         case "1week":
 977                                 if (DB_TYPE == "pgsql") {
 978                                         $date_qpart = "date_entered < NOW() - INTERVAL '1 week' ";
 979                                 } else {
 980                                         $date_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 1 WEEK) ";
 981                                 }
 982                                 break;
 983                         case "2weeks":
 984                                 if (DB_TYPE == "pgsql") {
 985                                         $date_qpart = "date_entered < NOW() - INTERVAL '2 week' ";
 986                                 } else {
 987                                         $date_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 2 WEEK) ";
 988                                 }
 989                                 break;
 990                         default:
 991                                 $date_qpart = "true";
 992                         }
 993
 994                         if (is_numeric($feed)) {
 995                                 if ($cat_view) {
 996
 997                                         if ($feed >= 0) {
 998
 999                                                 if ($feed > 0) {
1000                                                         $children = getChildCategories($link, $feed, $owner_uid);
1001                                                         array_push($children, $feed);
1002
1003                                                         $children = join(",", $children);
1004
1005                                                         $cat_qpart = "cat_id IN ($children)";
1006                                                 } else {
1007                                                         $cat_qpart = "cat_id IS NULL";
1008                                                 }
1009
1010                                                 db_query($link, "UPDATE ttrss_user_entries
1011                                                         SET unread = false, last_read = NOW() WHERE ref_id IN
1012                                                                 (SELECT id FROM
1013                                                                         (SELECT id FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id
1014                                                                                 AND owner_uid = $owner_uid AND unread = true AND feed_id IN
1015                                                                                         (SELECT id FROM ttrss_feeds WHERE $cat_qpart) AND $date_qpart) as tmp)");
1016
1017                                         } else if ($feed == -2) {
1018
1019                                                 db_query($link, "UPDATE ttrss_user_entries
1020                                                         SET unread = false,last_read = NOW() WHERE (SELECT COUNT(*)
1021                                                                 FROM ttrss_user_labels2 WHERE article_id = ref_id) > 0
1022                                                                 AND unread = true AND $date_qpart AND owner_uid = $owner_uid");
1023                                         }
1024
1025                                 } else if ($feed > 0) {
1026
1027                                         db_query($link, "UPDATE ttrss_user_entries
1028                                                 SET unread = false, last_read = NOW() WHERE ref_id IN
1029                                                         (SELECT id FROM
1030                                                                 (SELECT id FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id
1031                                                                         AND owner_uid = $owner_uid AND unread = true AND feed_id = $feed AND $date_qpart) as tmp)");
1032
1033                                 } else if ($feed < 0 && $feed > LABEL_BASE_INDEX) { // special, like starred
1034
1035                                         if ($feed == -1) {
1036                                                 db_query($link, "UPDATE ttrss_user_entries
1037                                                         SET unread = false, last_read = NOW() WHERE ref_id IN
1038                                                                 (SELECT id FROM
1039                                                                         (SELECT id FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id
1040                                                                                 AND owner_uid = $owner_uid AND unread = true AND marked = true AND $date_qpart) as tmp)");
1041                                         }
1042
1043                                         if ($feed == -2) {
1044                                                 db_query($link, "UPDATE ttrss_user_entries
1045                                                         SET unread = false, last_read = NOW() WHERE ref_id IN
1046                                                                 (SELECT id FROM
1047                                                                         (SELECT id FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id
1048                                                                                 AND owner_uid = $owner_uid AND unread = true AND published = true AND $date_qpart) as tmp)");
1049                                         }
1050
1051                                         if ($feed == -3) {
1052
1053                                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE");
1054
1055                                                 if (DB_TYPE == "pgsql") {
1056                                                         $match_part = "updated > NOW() - INTERVAL '$intl hour' ";
1057                                                 } else {
1058                                                         $match_part = "updated > DATE_SUB(NOW(),
1059                                                                 INTERVAL $intl HOUR) ";
1060                                                 }
1061
1062                                                 db_query($link, "UPDATE ttrss_user_entries
1063                                                         SET unread = false, last_read = NOW() WHERE ref_id IN
1064                                                                 (SELECT id FROM
1065                                                                         (SELECT id FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id
1066                                                                                 AND owner_uid = $owner_uid AND unread = true AND feed_id = $feed AND $date_qpart AND $match_part) as tmp)");
1067                                         }
1068
1069                                         if ($feed == -4) {
1070                                                 db_query($link, "UPDATE ttrss_user_entries
1071                                                         SET unread = false, last_read = NOW() WHERE ref_id IN
1072                                                                 (SELECT id FROM
1073                                                                         (SELECT id FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id
1074                                                                                 AND owner_uid = $owner_uid AND unread = true AND $date_qpart) as tmp)");
1075                                         }
1076
1077                                 } else if ($feed < LABEL_BASE_INDEX) { // label
1078
1079                                         $label_id = feed_to_label_id($feed);
1080
1081                                         db_query($link, "UPDATE ttrss_user_entries
1082                                                 SET unread = false, last_read = NOW() WHERE ref_id IN
1083                                                         (SELECT id FROM
1084                                                                 (SELECT ttrss_entries.id FROM ttrss_entries, ttrss_user_entries, ttrss_user_labels2 WHERE ref_id = id
1085                                                                         AND label_id = '$label_id' AND ref_id = article_id
1086                                                                         AND owner_uid = $owner_uid AND unread = true AND $date_qpart) as tmp)");
1087
1088                                 }
1089
1090                                 ccache_update($link, $feed, $owner_uid, $cat_view);
1091
1092                         } else { // tag
1093                                 db_query($link, "UPDATE ttrss_user_entries
1094                                         SET unread = false, last_read = NOW() WHERE ref_id IN
1095                                                 (SELECT id FROM
1096                                                         (SELECT ttrss_entries.id FROM ttrss_entries, ttrss_user_entries, ttrss_tags WHERE ref_id = ttrss_entries.id
1097                                                                 AND post_int_id = int_id AND tag_name = '$feed'
1098                                                                 AND ttrss_user_entries.owner_uid = $owner_uid AND unread = true AND $date_qpart) as tmp)");
1099
1100                         }
1101         }
1102
1103         function getAllCounters($link) {
1104                 $data = getGlobalCounters($link);
1105
1106                 $data = array_merge($data, getVirtCounters($link));
1107                 $data = array_merge($data, getLabelCounters($link));
1108                 $data = array_merge($data, getFeedCounters($link, $active_feed));
1109                 $data = array_merge($data, getCategoryCounters($link));
1110
1111                 return $data;
1112         }
1113
1114         function getCategoryTitle($link, $cat_id) {
1115
1116                 if ($cat_id == -1) {
1117                         return __("Special");
1118                 } else if ($cat_id == -2) {
1119                         return __("Labels");
1120                 } else {
1121
1122                         $result = db_query($link, "SELECT title FROM ttrss_feed_categories WHERE
1123                                 id = '$cat_id'");
1124
1125                         if (db_num_rows($result) == 1) {
1126                                 return db_fetch_result($result, 0, "title");
1127                         } else {
1128                                 return __("Uncategorized");
1129                         }
1130                 }
1131         }
1132
1133
1134         function getCategoryCounters($link) {
1135                 $ret_arr = array();
1136
1137                 /* Labels category */
1138
1139                 $cv = array("id" => -2, "kind" => "cat",
1140                         "counter" => getCategoryUnread($link, -2));
1141
1142                 array_push($ret_arr, $cv);
1143
1144                 $result = db_query($link, "SELECT id AS cat_id, value AS unread,
1145                         (SELECT COUNT(id) FROM ttrss_feed_categories AS c2
1146                                 WHERE c2.parent_cat = ttrss_feed_categories.id) AS num_children
1147                         FROM ttrss_feed_categories, ttrss_cat_counters_cache
1148                         WHERE ttrss_cat_counters_cache.feed_id = id AND
1149                         ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid AND
1150                         ttrss_feed_categories.owner_uid = " . $_SESSION["uid"]);
1151
1152                 while ($line = db_fetch_assoc($result)) {
1153                         $line["cat_id"] = (int) $line["cat_id"];
1154
1155                         if ($line["num_children"] > 0) {
1156                                 $child_counter = getCategoryChildrenUnread($link, $line["cat_id"], $_SESSION["uid"]);
1157                         } else {
1158                                 $child_counter = 0;
1159                         }
1160
1161                         $cv = array("id" => $line["cat_id"], "kind" => "cat",
1162                                 "counter" => $line["unread"] + $child_counter);
1163
1164                         array_push($ret_arr, $cv);
1165                 }
1166
1167                 /* Special case: NULL category doesn't actually exist in the DB */
1168
1169                 $cv = array("id" => 0, "kind" => "cat",
1170                         "counter" => (int) ccache_find($link, 0, $_SESSION["uid"], true));
1171
1172                 array_push($ret_arr, $cv);
1173
1174                 return $ret_arr;
1175         }
1176
1177         // only accepts real cats (>= 0)
1178         function getCategoryChildrenUnread($link, $cat, $owner_uid = false) {
1179                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1180
1181                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories WHERE parent_cat = '$cat'
1182                                 AND owner_uid = $owner_uid");
1183
1184                 $unread = 0;
1185
1186                 while ($line = db_fetch_assoc($result)) {
1187                         $unread += getCategoryUnread($link, $line["id"], $owner_uid);
1188                         $unread += getCategoryChildrenUnread($link, $line["id"], $owner_uid);
1189                 }
1190
1191                 return $unread;
1192         }
1193
1194         function getCategoryUnread($link, $cat, $owner_uid = false) {
1195
1196                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1197
1198                 if ($cat >= 0) {
1199
1200                         if ($cat != 0) {
1201                                 $cat_query = "cat_id = '$cat'";
1202                         } else {
1203                                 $cat_query = "cat_id IS NULL";
1204                         }
1205
1206                         $result = db_query($link, "SELECT id FROM ttrss_feeds WHERE $cat_query
1207                                         AND owner_uid = " . $owner_uid);
1208
1209                         $cat_feeds = array();
1210                         while ($line = db_fetch_assoc($result)) {
1211                                 array_push($cat_feeds, "feed_id = " . $line["id"]);
1212                         }
1213
1214                         if (count($cat_feeds) == 0) return 0;
1215
1216                         $match_part = implode(" OR ", $cat_feeds);
1217
1218                         $result = db_query($link, "SELECT COUNT(int_id) AS unread
1219                                 FROM ttrss_user_entries
1220                                 WHERE   unread = true AND ($match_part)
1221                                 AND owner_uid = " . $owner_uid);
1222
1223                         $unread = 0;
1224
1225                         # this needs to be rewritten
1226                         while ($line = db_fetch_assoc($result)) {
1227                                 $unread += $line["unread"];
1228                         }
1229
1230                         return $unread;
1231                 } else if ($cat == -1) {
1232                         return getFeedUnread($link, -1) + getFeedUnread($link, -2) + getFeedUnread($link, -3) + getFeedUnread($link, 0);
1233                 } else if ($cat == -2) {
1234
1235                         $result = db_query($link, "
1236                                 SELECT COUNT(unread) AS unread FROM
1237                                         ttrss_user_entries, ttrss_user_labels2
1238                                 WHERE article_id = ref_id AND unread = true
1239                                         AND ttrss_user_entries.owner_uid = '$owner_uid'");
1240
1241                         $unread = db_fetch_result($result, 0, "unread");
1242
1243                         return $unread;
1244
1245                 }
1246         }
1247
1248         function getFeedUnread($link, $feed, $is_cat = false) {
1249                 return getFeedArticles($link, $feed, $is_cat, true, $_SESSION["uid"]);
1250         }
1251
1252         function getLabelUnread($link, $label_id, $owner_uid = false) {
1253                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1254
1255                 $result = db_query($link, "SELECT COUNT(ref_id) AS unread FROM ttrss_user_entries, ttrss_user_labels2
1256                         WHERE owner_uid = '$owner_uid' AND unread = true AND label_id = '$label_id' AND article_id = ref_id");
1257
1258                 if (db_num_rows($result) != 0) {
1259                         return db_fetch_result($result, 0, "unread");
1260                 } else {
1261                         return 0;
1262                 }
1263         }
1264
1265         function getFeedArticles($link, $feed, $is_cat = false, $unread_only = false,
1266                 $owner_uid = false) {
1267
1268                 $n_feed = (int) $feed;
1269                 $need_entries = false;
1270
1271                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1272
1273                 if ($unread_only) {
1274                         $unread_qpart = "unread = true";
1275                 } else {
1276                         $unread_qpart = "true";
1277                 }
1278
1279                 if ($is_cat) {
1280                         return getCategoryUnread($link, $n_feed, $owner_uid);
1281                 } else if ($n_feed == -6) {
1282                         return 0;
1283                 } else if ($feed != "0" && $n_feed == 0) {
1284
1285                         $feed = db_escape_string($link, $feed);
1286
1287                         $result = db_query($link, "SELECT SUM((SELECT COUNT(int_id)
1288                                 FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1289                                         AND ref_id = id AND $unread_qpart)) AS count FROM ttrss_tags
1290                                 WHERE owner_uid = $owner_uid AND tag_name = '$feed'");
1291                         return db_fetch_result($result, 0, "count");
1292
1293                 } else if ($n_feed == -1) {
1294                         $match_part = "marked = true";
1295                 } else if ($n_feed == -2) {
1296                         $match_part = "published = true";
1297                 } else if ($n_feed == -3) {
1298                         $match_part = "unread = true AND score >= 0";
1299
1300                         $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
1301
1302                         if (DB_TYPE == "pgsql") {
1303                                 $match_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
1304                         } else {
1305                                 $match_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
1306                         }
1307
1308                         $need_entries = true;
1309
1310                 } else if ($n_feed == -4) {
1311                         $match_part = "true";
1312                 } else if ($n_feed >= 0) {
1313
1314                         if ($n_feed != 0) {
1315                                 $match_part = "feed_id = '$n_feed'";
1316                         } else {
1317                                 $match_part = "feed_id IS NULL";
1318                         }
1319
1320                 } else if ($feed < LABEL_BASE_INDEX) {
1321
1322                         $label_id = feed_to_label_id($feed);
1323
1324                         return getLabelUnread($link, $label_id, $owner_uid);
1325
1326                 }
1327
1328                 if ($match_part) {
1329
1330                         if ($need_entries) {
1331                                 $from_qpart = "ttrss_user_entries,ttrss_entries";
1332                                 $from_where = "ttrss_entries.id = ttrss_user_entries.ref_id AND";
1333                         } else {
1334                                 $from_qpart = "ttrss_user_entries";
1335                         }
1336
1337                         $query = "SELECT count(int_id) AS unread
1338                                 FROM $from_qpart WHERE
1339                                 $unread_qpart AND $from_where ($match_part) AND ttrss_user_entries.owner_uid = $owner_uid";
1340
1341                         //echo "[$feed/$query]\n";
1342
1343                         $result = db_query($link, $query);
1344
1345                 } else {
1346
1347                         $result = db_query($link, "SELECT COUNT(post_int_id) AS unread
1348                                 FROM ttrss_tags,ttrss_user_entries,ttrss_entries
1349                                 WHERE tag_name = '$feed' AND post_int_id = int_id AND ref_id = ttrss_entries.id
1350                                 AND $unread_qpart AND ttrss_tags.owner_uid = " . $owner_uid);
1351                 }
1352
1353                 $unread = db_fetch_result($result, 0, "unread");
1354
1355                 return $unread;
1356         }
1357
1358         function getGlobalUnread($link, $user_id = false) {
1359
1360                 if (!$user_id) {
1361                         $user_id = $_SESSION["uid"];
1362                 }
1363
1364                 $result = db_query($link, "SELECT SUM(value) AS c_id FROM ttrss_counters_cache
1365                         WHERE owner_uid = '$user_id' AND feed_id > 0");
1366
1367                 $c_id = db_fetch_result($result, 0, "c_id");
1368
1369                 return $c_id;
1370         }
1371
1372         function getGlobalCounters($link, $global_unread = -1) {
1373                 $ret_arr = array();
1374
1375                 if ($global_unread == -1) {
1376                         $global_unread = getGlobalUnread($link);
1377                 }
1378
1379                 $cv = array("id" => "global-unread",
1380                         "counter" => (int) $global_unread);
1381
1382                 array_push($ret_arr, $cv);
1383
1384                 $result = db_query($link, "SELECT COUNT(id) AS fn FROM
1385                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1386
1387                 $subscribed_feeds = db_fetch_result($result, 0, "fn");
1388
1389                 $cv = array("id" => "subscribed-feeds",
1390                         "counter" => (int) $subscribed_feeds);
1391
1392                 array_push($ret_arr, $cv);
1393
1394                 return $ret_arr;
1395         }
1396
1397         function getVirtCounters($link) {
1398
1399                 $ret_arr = array();
1400
1401                 for ($i = 0; $i >= -4; $i--) {
1402
1403                         $count = getFeedUnread($link, $i);
1404
1405                         $cv = array("id" => $i,
1406                                 "counter" => (int) $count);
1407
1408 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1409 //                              $cv["xmsg"] = getFeedArticles($link, $i)." ".__("total");
1410
1411                         array_push($ret_arr, $cv);
1412                 }
1413
1414                 global $pluginhost;
1415
1416                 if ($pluginhost) {
1417                         $feeds = $pluginhost->get_feeds(-1);
1418
1419                         if (is_array($feeds)) {
1420                                 foreach ($feeds as $feed) {
1421                                         $cv = array("id" => PluginHost::pfeed_to_feed_id($feed['id']),
1422                                                 "counter" => $feed['sender']->get_unread($feed['id']));
1423
1424                                         array_push($ret_arr, $cv);
1425                                 }
1426                         }
1427                 }
1428
1429                 return $ret_arr;
1430         }
1431
1432         function getLabelCounters($link, $descriptions = false) {
1433
1434                 $ret_arr = array();
1435
1436                 $owner_uid = $_SESSION["uid"];
1437
1438                 $result = db_query($link, "SELECT id,caption,COUNT(unread) AS unread
1439                         FROM ttrss_labels2 LEFT JOIN ttrss_user_labels2 ON
1440                                 (ttrss_labels2.id = label_id)
1441                                         LEFT JOIN ttrss_user_entries ON (ref_id = article_id AND unread = true)
1442                                 WHERE ttrss_labels2.owner_uid = $owner_uid GROUP BY ttrss_labels2.id,
1443                                         ttrss_labels2.caption");
1444
1445                 while ($line = db_fetch_assoc($result)) {
1446
1447                         $id = label_to_feed_id($line["id"]);
1448
1449                         $label_name = $line["caption"];
1450                         $count = $line["unread"];
1451
1452                         $cv = array("id" => $id,
1453                                 "counter" => (int) $count);
1454
1455                         if ($descriptions)
1456                                 $cv["description"] = $label_name;
1457
1458 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1459 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1460
1461                         array_push($ret_arr, $cv);
1462                 }
1463
1464                 return $ret_arr;
1465         }
1466
1467         function getFeedCounters($link, $active_feed = false) {
1468
1469                 $ret_arr = array();
1470
1471                 $query = "SELECT ttrss_feeds.id,
1472                                 ttrss_feeds.title,
1473                                 ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
1474                                 last_error, value AS count
1475                         FROM ttrss_feeds, ttrss_counters_cache
1476                         WHERE ttrss_feeds.owner_uid = ".$_SESSION["uid"]."
1477                                 AND ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid
1478                                 AND ttrss_counters_cache.feed_id = id";
1479
1480                 $result = db_query($link, $query);
1481                 $fctrs_modified = false;
1482
1483                 while ($line = db_fetch_assoc($result)) {
1484
1485                         $id = $line["id"];
1486                         $count = $line["count"];
1487                         $last_error = htmlspecialchars($line["last_error"]);
1488
1489                         $last_updated = make_local_datetime($link, $line['last_updated'], false);
1490
1491                         $has_img = feed_has_icon($id);
1492
1493                         if (date('Y') - date('Y', strtotime($line['last_updated'])) > 2)
1494                                 $last_updated = '';
1495
1496                         $cv = array("id" => $id,
1497                                 "updated" => $last_updated,
1498                                 "counter" => (int) $count,
1499                                 "has_img" => (int) $has_img);
1500
1501                         if ($last_error)
1502                                 $cv["error"] = $last_error;
1503
1504 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1505 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1506
1507                         if ($active_feed && $id == $active_feed)
1508                                 $cv["title"] = truncate_string($line["title"], 30);
1509
1510                         array_push($ret_arr, $cv);
1511
1512                 }
1513
1514                 return $ret_arr;
1515         }
1516
1517         function get_pgsql_version($link) {
1518                 $result = db_query($link, "SELECT version() AS version");
1519                 $version = explode(" ", db_fetch_result($result, 0, "version"));
1520                 return $version[1];
1521         }
1522
1523         /**
1524          * @return array (code => Status code, message => error message if available)
1525          *
1526          *                 0 - OK, Feed already exists
1527          *                 1 - OK, Feed added
1528          *                 2 - Invalid URL
1529          *                 3 - URL content is HTML, no feeds available
1530          *                 4 - URL content is HTML which contains multiple feeds.
1531          *                     Here you should call extractfeedurls in rpc-backend
1532          *                     to get all possible feeds.
1533          *                 5 - Couldn't download the URL content.
1534          */
1535         function subscribe_to_feed($link, $url, $cat_id = 0,
1536                         $auth_login = '', $auth_pass = '') {
1537
1538                 global $fetch_last_error;
1539
1540                 require_once "include/rssfuncs.php";
1541
1542                 $url = fix_url($url);
1543
1544                 if (!$url || !validate_feed_url($url)) return array("code" => 2);
1545
1546                 $contents = @fetch_file_contents($url, false, $auth_login, $auth_pass);
1547
1548                 if (!$contents) {
1549                         return array("code" => 5, "message" => $fetch_last_error);
1550                 }
1551
1552                 if (is_html($contents)) {
1553                         $feedUrls = get_feeds_from_html($url, $contents);
1554
1555                         if (count($feedUrls) == 0) {
1556                                 return array("code" => 3);
1557                         } else if (count($feedUrls) > 1) {
1558                                 return array("code" => 4, "feeds" => $feedUrls);
1559                         }
1560                         //use feed url as new URL
1561                         $url = key($feedUrls);
1562                 }
1563
1564                 if ($cat_id == "0" || !$cat_id) {
1565                         $cat_qpart = "NULL";
1566                 } else {
1567                         $cat_qpart = "'$cat_id'";
1568                 }
1569
1570                 $result = db_query($link,
1571                         "SELECT id FROM ttrss_feeds
1572                         WHERE feed_url = '$url' AND owner_uid = ".$_SESSION["uid"]);
1573
1574                 if (db_num_rows($result) == 0) {
1575                         $result = db_query($link,
1576                                 "INSERT INTO ttrss_feeds
1577                                         (owner_uid,feed_url,title,cat_id, auth_login,auth_pass,update_method)
1578                                 VALUES ('".$_SESSION["uid"]."', '$url',
1579                                 '[Unknown]', $cat_qpart, '$auth_login', '$auth_pass', 0)");
1580
1581                         $result = db_query($link,
1582                                 "SELECT id FROM ttrss_feeds WHERE feed_url = '$url'
1583                                         AND owner_uid = " . $_SESSION["uid"]);
1584
1585                         $feed_id = db_fetch_result($result, 0, "id");
1586
1587                         if ($feed_id) {
1588                                 update_rss_feed($link, $feed_id, true);
1589                         }
1590
1591                         return array("code" => 1);
1592                 } else {
1593                         return array("code" => 0);
1594                 }
1595         }
1596
1597         function print_feed_select($link, $id, $default_id = "",
1598                 $attributes = "", $include_all_feeds = true,
1599                 $root_id = false, $nest_level = 0) {
1600
1601                 if (!$root_id) {
1602                         print "<select id=\"$id\" name=\"$id\" $attributes>";
1603                         if ($include_all_feeds) {
1604                                 $is_selected = ("0" == $default_id) ? "selected=\"1\"" : "";
1605                                 print "<option $is_selected value=\"0\">".__('All feeds')."</option>";
1606                         }
1607                 }
1608
1609                 if (get_pref($link, 'ENABLE_FEED_CATS')) {
1610
1611                         if ($root_id)
1612                                 $parent_qpart = "parent_cat = '$root_id'";
1613                         else
1614                                 $parent_qpart = "parent_cat IS NULL";
1615
1616                         $result = db_query($link, "SELECT id,title,
1617                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1618                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1619                                 FROM ttrss_feed_categories
1620                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1621
1622                         while ($line = db_fetch_assoc($result)) {
1623
1624                                 for ($i = 0; $i < $nest_level; $i++)
1625                                         $line["title"] = " - " . $line["title"];
1626
1627                                 $is_selected = ("CAT:".$line["id"] == $default_id) ? "selected=\"1\"" : "";
1628
1629                                 printf("<option $is_selected value='CAT:%d'>%s</option>",
1630                                         $line["id"], htmlspecialchars($line["title"]));
1631
1632                                 if ($line["num_children"] > 0)
1633                                         print_feed_select($link, $id, $default_id, $attributes,
1634                                                 $include_all_feeds, $line["id"], $nest_level+1);
1635
1636                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1637                                         WHERE cat_id = '".$line["id"]."' AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1638
1639                                 while ($fline = db_fetch_assoc($feed_result)) {
1640                                         $is_selected = ($fline["id"] == $default_id) ? "selected=\"1\"" : "";
1641
1642                                         $fline["title"] = " + " . $fline["title"];
1643
1644                                         for ($i = 0; $i < $nest_level; $i++)
1645                                                 $fline["title"] = " - " . $fline["title"];
1646
1647                                         printf("<option $is_selected value='%d'>%s</option>",
1648                                                 $fline["id"], htmlspecialchars($fline["title"]));
1649                                 }
1650                         }
1651
1652                         if (!$root_id) {
1653                                 $is_selected = ($default_id == "CAT:0") ? "selected=\"1\"" : "";
1654
1655                                 printf("<option $is_selected value='CAT:0'>%s</option>",
1656                                         __("Uncategorized"));
1657
1658                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1659                                         WHERE cat_id IS NULL AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1660
1661                                 while ($fline = db_fetch_assoc($feed_result)) {
1662                                         $is_selected = ($fline["id"] == $default_id && !$default_is_cat) ? "selected=\"1\"" : "";
1663
1664                                         $fline["title"] = " + " . $fline["title"];
1665
1666                                         for ($i = 0; $i < $nest_level; $i++)
1667                                                 $fline["title"] = " - " . $fline["title"];
1668
1669                                         printf("<option $is_selected value='%d'>%s</option>",
1670                                                 $fline["id"], htmlspecialchars($fline["title"]));
1671                                 }
1672                         }
1673
1674                 } else {
1675                         $result = db_query($link, "SELECT id,title FROM ttrss_feeds
1676                                 WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
1677
1678                         while ($line = db_fetch_assoc($result)) {
1679
1680                                 $is_selected = ($line["id"] == $default_id) ? "selected=\"1\"" : "";
1681
1682                                 printf("<option $is_selected value='%d'>%s</option>",
1683                                         $line["id"], htmlspecialchars($line["title"]));
1684                         }
1685                 }
1686
1687                 if (!$root_id) {
1688                         print "</select>";
1689                 }
1690         }
1691
1692         function print_feed_cat_select($link, $id, $default_id,
1693                 $attributes, $include_all_cats = true, $root_id = false, $nest_level = 0) {
1694
1695                         if (!$root_id) {
1696                                         print "<select id=\"$id\" name=\"$id\" default=\"$default_id\" onchange=\"catSelectOnChange(this)\" $attributes>";
1697                         }
1698
1699                         if ($root_id)
1700                                 $parent_qpart = "parent_cat = '$root_id'";
1701                         else
1702                                 $parent_qpart = "parent_cat IS NULL";
1703
1704                         $result = db_query($link, "SELECT id,title,
1705                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1706                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1707                                 FROM ttrss_feed_categories
1708                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1709
1710                         while ($line = db_fetch_assoc($result)) {
1711                                 if ($line["id"] == $default_id) {
1712                                         $is_selected = "selected=\"1\"";
1713                                 } else {
1714                                         $is_selected = "";
1715                                 }
1716
1717                                 for ($i = 0; $i < $nest_level; $i++)
1718                                         $line["title"] = " - " . $line["title"];
1719
1720                                 if ($line["title"])
1721                                         printf("<option $is_selected value='%d'>%s</option>",
1722                                                 $line["id"], htmlspecialchars($line["title"]));
1723
1724                                 if ($line["num_children"] > 0)
1725                                         print_feed_cat_select($link, $id, $default_id, $attributes,
1726                                                 $include_all_cats, $line["id"], $nest_level+1);
1727                         }
1728
1729                         if (!$root_id) {
1730                                 if ($include_all_cats) {
1731                                         if (db_num_rows($result) > 0) {
1732                                                 print "<option disabled=\"1\">--------</option>";
1733                                         }
1734
1735                                         if ($default_id == 0) {
1736                                                 $is_selected = "selected=\"1\"";
1737                                         } else {
1738                                                 $is_selected = "";
1739                                         }
1740
1741                                         print "<option $is_selected value=\"0\">".__('Uncategorized')."</option>";
1742                                 }
1743                                 print "</select>";
1744                         }
1745                 }
1746
1747         function checkbox_to_sql_bool($val) {
1748                 return ($val == "on") ? "true" : "false";
1749         }
1750
1751         function getFeedCatTitle($link, $id) {
1752                 if ($id == -1) {
1753                         return __("Special");
1754                 } else if ($id < LABEL_BASE_INDEX) {
1755                         return __("Labels");
1756                 } else if ($id > 0) {
1757                         $result = db_query($link, "SELECT ttrss_feed_categories.title
1758                                 FROM ttrss_feeds, ttrss_feed_categories WHERE ttrss_feeds.id = '$id' AND
1759                                         cat_id = ttrss_feed_categories.id");
1760                         if (db_num_rows($result) == 1) {
1761                                 return db_fetch_result($result, 0, "title");
1762                         } else {
1763                                 return __("Uncategorized");
1764                         }
1765                 } else {
1766                         return "getFeedCatTitle($id) failed";
1767                 }
1768
1769         }
1770
1771         function getFeedIcon($id) {
1772                 switch ($id) {
1773                 case 0:
1774                         return "images/archive.png";
1775                         break;
1776                 case -1:
1777                         return "images/mark_set.svg";
1778                         break;
1779                 case -2:
1780                         return "images/pub_set.svg";
1781                         break;
1782                 case -3:
1783                         return "images/fresh.png";
1784                         break;
1785                 case -4:
1786                         return "images/tag.png";
1787                         break;
1788                 case -6:
1789                         return "images/recently_read.png";
1790                         break;
1791                 default:
1792                         if ($id < LABEL_BASE_INDEX) {
1793                                 return "images/label.png";
1794                         } else {
1795                                 if (file_exists(ICONS_DIR . "/$id.ico"))
1796                                         return ICONS_URL . "/$id.ico";
1797                         }
1798                         break;
1799                 }
1800         }
1801
1802         function getFeedTitle($link, $id, $cat = false) {
1803                 if ($cat) {
1804                         return getCategoryTitle($link, $id);
1805                 } else if ($id == -1) {
1806                         return __("Starred articles");
1807                 } else if ($id == -2) {
1808                         return __("Published articles");
1809                 } else if ($id == -3) {
1810                         return __("Fresh articles");
1811                 } else if ($id == -4) {
1812                         return __("All articles");
1813                 } else if ($id === 0 || $id === "0") {
1814                         return __("Archived articles");
1815                 } else if ($id == -6) {
1816                         return __("Recently read");
1817                 } else if ($id < LABEL_BASE_INDEX) {
1818                         $label_id = feed_to_label_id($id);
1819                         $result = db_query($link, "SELECT caption FROM ttrss_labels2 WHERE id = '$label_id'");
1820                         if (db_num_rows($result) == 1) {
1821                                 return db_fetch_result($result, 0, "caption");
1822                         } else {
1823                                 return "Unknown label ($label_id)";
1824                         }
1825
1826                 } else if (is_numeric($id) && $id > 0) {
1827                         $result = db_query($link, "SELECT title FROM ttrss_feeds WHERE id = '$id'");
1828                         if (db_num_rows($result) == 1) {
1829                                 return db_fetch_result($result, 0, "title");
1830                         } else {
1831                                 return "Unknown feed ($id)";
1832                         }
1833                 } else {
1834                         return $id;
1835                 }
1836         }
1837
1838         function make_init_params($link) {
1839                 $params = array();
1840
1841                 foreach (array("ON_CATCHUP_SHOW_NEXT_FEED", "HIDE_READ_FEEDS",
1842                         "ENABLE_FEED_CATS", "FEEDS_SORT_BY_UNREAD", "CONFIRM_FEED_CATCHUP",
1843                         "CDM_AUTO_CATCHUP", "FRESH_ARTICLE_MAX_AGE", "DEFAULT_ARTICLE_LIMIT",
1844                         "HIDE_READ_SHOWS_SPECIAL", "COMBINED_DISPLAY_MODE") as $param) {
1845
1846                                  $params[strtolower($param)] = (int) get_pref($link, $param);
1847                  }
1848
1849                 $params["icons_url"] = ICONS_URL;
1850                 $params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
1851                 $params["default_view_mode"] = get_pref($link, "_DEFAULT_VIEW_MODE");
1852                 $params["default_view_limit"] = (int) get_pref($link, "_DEFAULT_VIEW_LIMIT");
1853                 $params["default_view_order_by"] = get_pref($link, "_DEFAULT_VIEW_ORDER_BY");
1854                 $params["bw_limit"] = (int) $_SESSION["bw_limit"];
1855                 $params["label_base_index"] = (int) LABEL_BASE_INDEX;
1856
1857                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
1858                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1859
1860                 $max_feed_id = db_fetch_result($result, 0, "mid");
1861                 $num_feeds = db_fetch_result($result, 0, "nf");
1862
1863                 $params["max_feed_id"] = (int) $max_feed_id;
1864                 $params["num_feeds"] = (int) $num_feeds;
1865
1866                 $params["collapsed_feedlist"] = (int) get_pref($link, "_COLLAPSED_FEEDLIST");
1867                 $params["hotkeys"] = get_hotkeys_map($link);
1868
1869                 $params["csrf_token"] = $_SESSION["csrf_token"];
1870                 $params["widescreen"] = (int) $_COOKIE["ttrss_widescreen"];
1871
1872                 $params['simple_update'] = defined('SIMPLE_UPDATE_MODE') && SIMPLE_UPDATE_MODE;
1873
1874                 return $params;
1875         }
1876
1877         function get_hotkeys_info($link) {
1878                 $hotkeys = array(
1879                         __("Navigation") => array(
1880                                 "next_feed" => __("Open next feed"),
1881                                 "prev_feed" => __("Open previous feed"),
1882                                 "next_article" => __("Open next article"),
1883                                 "prev_article" => __("Open previous article"),
1884                                 "next_article_noscroll" => __("Open next article (don't scroll long articles)"),
1885                                 "prev_article_noscroll" => __("Open previous article (don't scroll long articles)"),
1886                                 "search_dialog" => __("Show search dialog")),
1887                         __("Article") => array(
1888                                 "toggle_mark" => __("Toggle starred"),
1889                                 "toggle_publ" => __("Toggle published"),
1890                                 "toggle_unread" => __("Toggle unread"),
1891                                 "edit_tags" => __("Edit tags"),
1892                                 "dismiss_selected" => __("Dismiss selected"),
1893                                 "dismiss_read" => __("Dismiss read"),
1894                                 "open_in_new_window" => __("Open in new window"),
1895                                 "catchup_below" => __("Mark below as read"),
1896                                 "catchup_above" => __("Mark above as read"),
1897                                 "article_scroll_down" => __("Scroll down"),
1898                                 "article_scroll_up" => __("Scroll up"),
1899                                 "select_article_cursor" => __("Select article under cursor"),
1900                                 "email_article" => __("Email article"),
1901                                 "close_article" => __("Close/collapse article"),
1902                                 "toggle_widescreen" => __("Toggle widescreen mode"),
1903                                 "toggle_embed_original" => __("Toggle embed original")),
1904                         __("Article selection") => array(
1905                                 "select_all" => __("Select all articles"),
1906                                 "select_unread" => __("Select unread"),
1907                                 "select_marked" => __("Select starred"),
1908                                 "select_published" => __("Select published"),
1909                                 "select_invert" => __("Invert selection"),
1910                                 "select_none" => __("Deselect everything")),
1911                         __("Feed") => array(
1912                                 "feed_refresh" => __("Refresh current feed"),
1913                                 "feed_unhide_read" => __("Un/hide read feeds"),
1914                                 "feed_subscribe" => __("Subscribe to feed"),
1915                                 "feed_edit" => __("Edit feed"),
1916                                 "feed_catchup" => __("Mark as read"),
1917                                 "feed_reverse" => __("Reverse headlines"),
1918                                 "feed_debug_update" => __("Debug feed update"),
1919                                 "catchup_all" => __("Mark all feeds as read"),
1920                                 "cat_toggle_collapse" => __("Un/collapse current category"),
1921                                 "toggle_combined_mode" => __("Toggle combined mode"),
1922                                 "toggle_cdm_expanded" => __("Toggle auto expand in combined mode")),
1923                         __("Go to") => array(
1924                                 "goto_all" => __("All articles"),
1925                                 "goto_fresh" => __("Fresh"),
1926                                 "goto_marked" => __("Starred"),
1927                                 "goto_published" => __("Published"),
1928                                 "goto_tagcloud" => __("Tag cloud"),
1929                                 "goto_prefs" => __("Preferences")),
1930                         __("Other") => array(
1931                                 "create_label" => __("Create label"),
1932                                 "create_filter" => __("Create filter"),
1933                                 "collapse_sidebar" => __("Un/collapse sidebar"),
1934                                 "help_dialog" => __("Show help dialog"))
1935                         );
1936
1937                 global $pluginhost;
1938                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_HOTKEY_INFO) as $plugin) {
1939                         $hotkeys = $plugin->hook_hotkey_info($hotkeys);
1940                 }
1941
1942                 return $hotkeys;
1943         }
1944
1945         function get_hotkeys_map($link) {
1946                 $hotkeys = array(
1947 //                      "navigation" => array(
1948                                 "k" => "next_feed",
1949                                 "j" => "prev_feed",
1950                                 "n" => "next_article",
1951                                 "p" => "prev_article",
1952                                 "(38)|up" => "prev_article",
1953                                 "(40)|down" => "next_article",
1954 //                              "^(38)|Ctrl-up" => "prev_article_noscroll",
1955 //                              "^(40)|Ctrl-down" => "next_article_noscroll",
1956                                 "(191)|/" => "search_dialog",
1957 //                      "article" => array(
1958                                 "s" => "toggle_mark",
1959                                 "*s" => "toggle_publ",
1960                                 "u" => "toggle_unread",
1961                                 "*t" => "edit_tags",
1962                                 "*d" => "dismiss_selected",
1963                                 "*x" => "dismiss_read",
1964                                 "o" => "open_in_new_window",
1965                                 "c p" => "catchup_below",
1966                                 "c n" => "catchup_above",
1967                                 "*n" => "article_scroll_down",
1968                                 "*p" => "article_scroll_up",
1969                                 "*(38)|Shift+up" => "article_scroll_up",
1970                                 "*(40)|Shift+down" => "article_scroll_down",
1971                                 "a *w" => "toggle_widescreen",
1972                                 "a e" => "toggle_embed_original",
1973                                 "e" => "email_article",
1974                                 "a q" => "close_article",
1975 //                      "article_selection" => array(
1976                                 "a a" => "select_all",
1977                                 "a u" => "select_unread",
1978                                 "a *u" => "select_marked",
1979                                 "a p" => "select_published",
1980                                 "a i" => "select_invert",
1981                                 "a n" => "select_none",
1982 //                      "feed" => array(
1983                                 "f r" => "feed_refresh",
1984                                 "f a" => "feed_unhide_read",
1985                                 "f s" => "feed_subscribe",
1986                                 "f e" => "feed_edit",
1987                                 "f q" => "feed_catchup",
1988                                 "f x" => "feed_reverse",
1989                                 "f *d" => "feed_debug_update",
1990                                 "f *c" => "toggle_combined_mode",
1991                                 "f c" => "toggle_cdm_expanded",
1992                                 "*q" => "catchup_all",
1993                                 "x" => "cat_toggle_collapse",
1994 //                      "goto" => array(
1995                                 "g a" => "goto_all",
1996                                 "g f" => "goto_fresh",
1997                                 "g s" => "goto_marked",
1998                                 "g p" => "goto_published",
1999                                 "g t" => "goto_tagcloud",
2000                                 "g *p" => "goto_prefs",
2001 //                      "other" => array(
2002                                 "(9)|Tab" => "select_article_cursor", // tab
2003                                 "c l" => "create_label",
2004                                 "c f" => "create_filter",
2005                                 "c s" => "collapse_sidebar",
2006                                 "^(191)|Ctrl+/" => "help_dialog",
2007                         );
2008
2009                 if (get_pref($link, 'COMBINED_DISPLAY_MODE')) {
2010                         $hotkeys["^(38)|Ctrl-up"] = "prev_article_noscroll";
2011                         $hotkeys["^(40)|Ctrl-down"] = "next_article_noscroll";
2012                 }
2013
2014                 global $pluginhost;
2015                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_HOTKEY_MAP) as $plugin) {
2016                         $hotkeys = $plugin->hook_hotkey_map($hotkeys);
2017                 }
2018
2019                 $prefixes = array();
2020
2021                 foreach (array_keys($hotkeys) as $hotkey) {
2022                         $pair = explode(" ", $hotkey, 2);
2023
2024                         if (count($pair) > 1 && !in_array($pair[0], $prefixes)) {
2025                                 array_push($prefixes, $pair[0]);
2026                         }
2027                 }
2028
2029                 return array($prefixes, $hotkeys);
2030         }
2031
2032         function make_runtime_info($link) {
2033                 $data = array();
2034
2035                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2036                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2037
2038                 $max_feed_id = db_fetch_result($result, 0, "mid");
2039                 $num_feeds = db_fetch_result($result, 0, "nf");
2040
2041                 $data["max_feed_id"] = (int) $max_feed_id;
2042                 $data["num_feeds"] = (int) $num_feeds;
2043
2044                 $data['last_article_id'] = getLastArticleId($link);
2045                 $data['cdm_expanded'] = get_pref($link, 'CDM_EXPANDED');
2046
2047                 $data['dep_ts'] = calculate_dep_timestamp();
2048                 $data['reload_on_ts_change'] = !defined('_NO_RELOAD_ON_TS_CHANGE');
2049
2050                 if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
2051
2052                         $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
2053
2054                         if (time() - $_SESSION["daemon_stamp_check"] > 30) {
2055
2056                                 $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
2057
2058                                 if ($stamp) {
2059                                         $stamp_delta = time() - $stamp;
2060
2061                                         if ($stamp_delta > 1800) {
2062                                                 $stamp_check = 0;
2063                                         } else {
2064                                                 $stamp_check = 1;
2065                                                 $_SESSION["daemon_stamp_check"] = time();
2066                                         }
2067
2068                                         $data['daemon_stamp_ok'] = $stamp_check;
2069
2070                                         $stamp_fmt = date("Y.m.d, G:i", $stamp);
2071
2072                                         $data['daemon_stamp'] = $stamp_fmt;
2073                                 }
2074                         }
2075                 }
2076
2077                 if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
2078                                 $new_version_details = @check_for_update($link);
2079
2080                                 $data['new_version_available'] = (int) ($new_version_details != false);
2081
2082                                 $_SESSION["last_version_check"] = time();
2083                                 $_SESSION["version_data"] = $new_version_details;
2084                 }
2085
2086                 return $data;
2087         }
2088
2089         function search_to_sql($link, $search) {
2090
2091                 $search_query_part = "";
2092
2093                 $keywords = explode(" ", $search);
2094                 $query_keywords = array();
2095
2096                 foreach ($keywords as $k) {
2097                         if (strpos($k, "-") === 0) {
2098                                 $k = substr($k, 1);
2099                                 $not = "NOT";
2100                         } else {
2101                                 $not = "";
2102                         }
2103
2104                         $commandpair = explode(":", mb_strtolower($k), 2);
2105
2106                         if ($commandpair[0] == "note" && $commandpair[1]) {
2107
2108                                 if ($commandpair[1] == "true")
2109                                         array_push($query_keywords, "($not (note IS NOT NULL AND note != ''))");
2110                                 else
2111                                         array_push($query_keywords, "($not (note IS NULL OR note = ''))");
2112
2113                         } else if ($commandpair[0] == "star" && $commandpair[1]) {
2114
2115                                 if ($commandpair[1] == "true")
2116                                         array_push($query_keywords, "($not (marked = true))");
2117                                 else
2118                                         array_push($query_keywords, "($not (marked = false))");
2119
2120                         } else if ($commandpair[0] == "pub" && $commandpair[1]) {
2121
2122                                 if ($commandpair[1] == "true")
2123                                         array_push($query_keywords, "($not (published = true))");
2124                                 else
2125                                         array_push($query_keywords, "($not (published = false))");
2126
2127                         } else if (strpos($k, "@") === 0) {
2128
2129                                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $_SESSION['uid']);
2130                                 $orig_ts = strtotime(substr($k, 1));
2131                                 $k = date("Y-m-d", convert_timestamp($orig_ts, $user_tz_string, 'UTC'));
2132
2133                                 //$k = date("Y-m-d", strtotime(substr($k, 1)));
2134
2135                                 array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
2136                         } else {
2137                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2138                                                 OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2139                         }
2140                 }
2141
2142                 $search_query_part = implode("AND", $query_keywords);
2143
2144                 return $search_query_part;
2145         }
2146
2147         function getParentCategories($link, $cat, $owner_uid) {
2148                 $rv = array();
2149
2150                 $result = db_query($link, "SELECT parent_cat FROM ttrss_feed_categories
2151                         WHERE id = '$cat' AND parent_cat IS NOT NULL AND owner_uid = $owner_uid");
2152
2153                 while ($line = db_fetch_assoc($result)) {
2154                         array_push($rv, $line["parent_cat"]);
2155                         $rv = array_merge($rv, getParentCategories($link, $line["parent_cat"], $owner_uid));
2156                 }
2157
2158                 return $rv;
2159         }
2160
2161         function getChildCategories($link, $cat, $owner_uid) {
2162                 $rv = array();
2163
2164                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories
2165                         WHERE parent_cat = '$cat' AND owner_uid = $owner_uid");
2166
2167                 while ($line = db_fetch_assoc($result)) {
2168                         array_push($rv, $line["id"]);
2169                         $rv = array_merge($rv, getChildCategories($link, $line["id"], $owner_uid));
2170                 }
2171
2172                 return $rv;
2173         }
2174
2175         function queryFeedHeadlines($link, $feed, $limit, $view_mode, $cat_view, $search, $search_mode, $override_order = false, $offset = 0, $owner_uid = 0, $filter = false, $since_id = 0, $include_children = false, $ignore_vfeed_group = false) {
2176
2177                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2178
2179                 $ext_tables_part = "";
2180
2181                         if ($search) {
2182
2183                                 if (SPHINX_ENABLED) {
2184                                         $ids = join(",", @sphinx_search($search, 0, 500));
2185
2186                                         if ($ids)
2187                                                 $search_query_part = "ref_id IN ($ids) AND ";
2188                                         else
2189                                                 $search_query_part = "ref_id = -1 AND ";
2190
2191                                 } else {
2192                                         $search_query_part = search_to_sql($link, $search);
2193                                         $search_query_part .= " AND ";
2194                                 }
2195
2196                         } else {
2197                                 $search_query_part = "";
2198                         }
2199
2200                         if ($filter) {
2201
2202                                 if (DB_TYPE == "pgsql") {
2203                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '14 days' ";
2204                                 } else {
2205                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL 14 DAY) ";
2206                                 }
2207
2208                                 $override_order = "updated DESC";
2209
2210                                 $filter_query_part = filter_to_sql($link, $filter, $owner_uid);
2211
2212                                 // Try to check if SQL regexp implementation chokes on a valid regexp
2213                                 $result = db_query($link, "SELECT true AS true_val FROM ttrss_entries,
2214                                         ttrss_user_entries, ttrss_feeds, ttrss_feed_categories
2215                                         WHERE $filter_query_part LIMIT 1", false);
2216
2217                                 if ($result) {
2218                                         $test = db_fetch_result($result, 0, "true_val");
2219
2220                                         if (!$test) {
2221                                                 $filter_query_part = "false AND";
2222                                         } else {
2223                                                 $filter_query_part .= " AND";
2224                                         }
2225                                 } else {
2226                                         $filter_query_part = "false AND";
2227                                 }
2228
2229                         } else {
2230                                 $filter_query_part = "";
2231                         }
2232
2233                         if ($since_id) {
2234                                 $since_id_part = "ttrss_entries.id > $since_id AND ";
2235                         } else {
2236                                 $since_id_part = "";
2237                         }
2238
2239                         $view_query_part = "";
2240
2241                         if ($view_mode == "adaptive") {
2242                                 if ($search) {
2243                                         $view_query_part = " ";
2244                                 } else if ($feed != -1) {
2245
2246                                         $unread = getFeedUnread($link, $feed, $cat_view);
2247
2248                                         if ($cat_view && $feed > 0 && $include_children)
2249                                                 $unread += getCategoryChildrenUnread($link, $feed);
2250
2251                                         if ($unread > 0)
2252                                 $view_query_part = " unread = true AND ";
2253
2254                                 }
2255                         }
2256
2257                         if ($view_mode == "marked") {
2258                                 $view_query_part = " marked = true AND ";
2259                         }
2260
2261                         if ($view_mode == "has_note") {
2262                                 $view_query_part = " (note IS NOT NULL AND note != '') AND ";
2263                         }
2264
2265                         if ($view_mode == "published") {
2266                                 $view_query_part = " published = true AND ";
2267                         }
2268
2269                         if ($view_mode == "unread" && $feed != -6) {
2270                                 $view_query_part = " unread = true AND ";
2271                         }
2272
2273                         if ($limit > 0) {
2274                                 $limit_query_part = "LIMIT " . $limit;
2275                         }
2276
2277                         $allow_archived = false;
2278
2279                         $vfeed_query_part = "";
2280
2281                         // override query strategy and enable feed display when searching globally
2282                         if ($search && $search_mode == "all_feeds") {
2283                                 $query_strategy_part = "true";
2284                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2285                         /* tags */
2286                         } else if (!is_numeric($feed)) {
2287                                 $query_strategy_part = "true";
2288                                 $vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
2289                                         id = feed_id) as feed_title,";
2290                         } else if ($search && $search_mode == "this_cat") {
2291                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2292
2293                                 if ($feed > 0) {
2294                                         if ($include_children) {
2295                                                 $subcats = getChildCategories($link, $feed, $owner_uid);
2296                                                 array_push($subcats, $feed);
2297                                                 $cats_qpart = join(",", $subcats);
2298                                         } else {
2299                                                 $cats_qpart = $feed;
2300                                         }
2301
2302                                         $query_strategy_part = "ttrss_feeds.cat_id IN ($cats_qpart)";
2303
2304                                 } else {
2305                                         $query_strategy_part = "ttrss_feeds.cat_id IS NULL";
2306                                 }
2307
2308                         } else if ($feed > 0) {
2309
2310                                 if ($cat_view) {
2311
2312                                         if ($feed > 0) {
2313                                                 if ($include_children) {
2314                                                         # sub-cats
2315                                                         $subcats = getChildCategories($link, $feed, $owner_uid);
2316
2317                                                         array_push($subcats, $feed);
2318                                                         $query_strategy_part = "cat_id IN (".
2319                                                                         implode(",", $subcats).")";
2320
2321                                                 } else {
2322                                                         $query_strategy_part = "cat_id = '$feed'";
2323                                                 }
2324
2325                                         } else {
2326                                                 $query_strategy_part = "cat_id IS NULL";
2327                                         }
2328
2329                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2330
2331                                 } else {
2332                                         $query_strategy_part = "feed_id = '$feed'";
2333                                 }
2334                         } else if ($feed == 0 && !$cat_view) { // archive virtual feed
2335                                 $query_strategy_part = "feed_id IS NULL";
2336                                 $allow_archived = true;
2337                         } else if ($feed == 0 && $cat_view) { // uncategorized
2338                                 $query_strategy_part = "cat_id IS NULL AND feed_id IS NOT NULL";
2339                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2340                         } else if ($feed == -1) { // starred virtual feed
2341                                 $query_strategy_part = "marked = true";
2342                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2343                                 $allow_archived = true;
2344
2345                                 if (!$override_order) {
2346                                         $override_order = "last_marked DESC, date_entered DESC, updated DESC";
2347                                 }
2348
2349                         } else if ($feed == -2) { // published virtual feed OR labels category
2350
2351                                 if (!$cat_view) {
2352                                         $query_strategy_part = "published = true";
2353                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2354                                         $allow_archived = true;
2355
2356                                         if (!$override_order) {
2357                                                 $override_order = "last_published DESC, date_entered DESC, updated DESC";
2358                                         }
2359
2360                                 } else {
2361                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2362
2363                                         $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2364
2365                                         $query_strategy_part = "ttrss_labels2.id = ttrss_user_labels2.label_id AND
2366                                                 ttrss_user_labels2.article_id = ref_id";
2367
2368                                 }
2369                         } else if ($feed == -6) { // recently read
2370                                 $query_strategy_part = "unread = false AND last_read IS NOT NULL";
2371                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2372                                 $allow_archived = true;
2373
2374                                 if (!$override_order) $override_order = "last_read DESC";
2375                         } else if ($feed == -3) { // fresh virtual feed
2376                                 $query_strategy_part = "unread = true AND score >= 0";
2377
2378                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
2379
2380                                 if (DB_TYPE == "pgsql") {
2381                                         $query_strategy_part .= " AND date_entered > NOW() - INTERVAL '$intl hour' ";
2382                                 } else {
2383                                         $query_strategy_part .= " AND date_entered > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
2384                                 }
2385
2386                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2387                         } else if ($feed == -4) { // all articles virtual feed
2388                                 $query_strategy_part = "true";
2389                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2390                         } else if ($feed <= LABEL_BASE_INDEX) { // labels
2391                                 $label_id = feed_to_label_id($feed);
2392
2393                                 $query_strategy_part = "label_id = '$label_id' AND
2394                                         ttrss_labels2.id = ttrss_user_labels2.label_id AND
2395                                         ttrss_user_labels2.article_id = ref_id";
2396
2397                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2398                                 $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2399                                 $allow_archived = true;
2400
2401                         } else {
2402                                 $query_strategy_part = "true";
2403                         }
2404
2405                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
2406                                 $date_sort_field = "updated";
2407                         } else {
2408                                 $date_sort_field = "date_entered";
2409                         }
2410
2411                         $order_by = "$date_sort_field DESC, updated DESC";
2412
2413                         if ($view_mode == "unread_first") {
2414                                 $order_by = "unread DESC, $order_by";
2415                         }
2416
2417                         if ($override_order) {
2418                                 $order_by = $override_order;
2419                         }
2420
2421                         $feed_title = "";
2422
2423                         if ($search) {
2424                                 $feed_title = T_sprintf("Search results: %s", $search);
2425                         } else {
2426                                 if ($cat_view) {
2427                                         $feed_title = getCategoryTitle($link, $feed);
2428                                 } else {
2429                                         if (is_numeric($feed) && $feed > 0) {
2430                                                 $result = db_query($link, "SELECT title,site_url,last_error
2431                                                         FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = $owner_uid");
2432
2433                                                 $feed_title = db_fetch_result($result, 0, "title");
2434                                                 $feed_site_url = db_fetch_result($result, 0, "site_url");
2435                                                 $last_error = db_fetch_result($result, 0, "last_error");
2436                                         } else {
2437                                                 $feed_title = getFeedTitle($link, $feed);
2438                                         }
2439                                 }
2440                         }
2441
2442                         $content_query_part = "content as content_preview, cached_content, ";
2443
2444                         if (is_numeric($feed)) {
2445
2446                                 if ($feed >= 0) {
2447                                         $feed_kind = "Feeds";
2448                                 } else {
2449                                         $feed_kind = "Labels";
2450                                 }
2451
2452                                 if ($limit_query_part) {
2453                                         $offset_query_part = "OFFSET $offset";
2454                                 }
2455
2456                                 // proper override_order applied above
2457                                 if ($vfeed_query_part && !$ignore_vfeed_group && get_pref($link, 'VFEED_GROUP_BY_FEED', $owner_uid)) {
2458                                         if (!$override_order) {
2459                                                 $order_by = "ttrss_feeds.title, $order_by";
2460                                         } else {
2461                                                 $order_by = "ttrss_feeds.title, $override_order";
2462                                         }
2463                                 }
2464
2465                                 if (!$allow_archived) {
2466                                         $from_qpart = "ttrss_entries,ttrss_user_entries,ttrss_feeds$ext_tables_part";
2467                                         $feed_check_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
2468
2469                                 } else {
2470                                         $from_qpart = "ttrss_entries$ext_tables_part,ttrss_user_entries
2471                                                 LEFT JOIN ttrss_feeds ON (feed_id = ttrss_feeds.id)";
2472                                 }
2473
2474                                 $query = "SELECT DISTINCT
2475                                                 date_entered,
2476                                                 guid,
2477                                                 ttrss_entries.id,ttrss_entries.title,
2478                                                 updated,
2479                                                 label_cache,
2480                                                 tag_cache,
2481                                                 always_display_enclosures,
2482                                                 site_url,
2483                                                 note,
2484                                                 num_comments,
2485                                                 comments,
2486                                                 int_id,
2487                                                 hide_images,
2488                                                 unread,feed_id,marked,published,link,last_read,orig_feed_id,
2489                                                 last_marked, last_published,
2490                                                 $vfeed_query_part
2491                                                 $content_query_part
2492                                                 author,score
2493                                         FROM
2494                                                 $from_qpart
2495                                         WHERE
2496                                         $feed_check_qpart
2497                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
2498                                         ttrss_user_entries.owner_uid = '$owner_uid' AND
2499                                         $search_query_part
2500                                         $filter_query_part
2501                                         $view_query_part
2502                                         $since_id_part
2503                                         $query_strategy_part ORDER BY $order_by
2504                                         $limit_query_part $offset_query_part";
2505
2506                                 if ($_REQUEST["debug"]) print $query;
2507
2508                                 $result = db_query($link, $query);
2509
2510                         } else {
2511                                 // browsing by tag
2512
2513                                 $select_qpart = "SELECT DISTINCT " .
2514                                                                 "date_entered," .
2515                                                                 "guid," .
2516                                                                 "note," .
2517                                                                 "ttrss_entries.id as id," .
2518                                                                 "title," .
2519                                                                 "updated," .
2520                                                                 "unread," .
2521                                                                 "feed_id," .
2522                                                                 "orig_feed_id," .
2523                                                                 "marked," .
2524                                                                 "num_comments, " .
2525                                                                 "comments, " .
2526                                                                 "tag_cache," .
2527                                                                 "label_cache," .
2528                                                                 "link," .
2529                                                                 "last_read," .
2530                                                                 "(SELECT hide_images FROM ttrss_feeds WHERE id = feed_id) AS hide_images," .
2531                                                                 "last_marked, last_published, " .
2532                                                                 $since_id_part .
2533                                                                 $vfeed_query_part .
2534                                                                 $content_query_part .
2535                                                                 "score ";
2536
2537                                 $feed_kind = "Tags";
2538                                 $all_tags = explode(",", $feed);
2539                                 if ($search_mode == 'any') {
2540                                         $tag_sql = "tag_name in (" . implode(", ", array_map("db_quote", $all_tags)) . ")";
2541                                         $from_qpart = " FROM ttrss_entries,ttrss_user_entries,ttrss_tags ";
2542                                         $where_qpart = " WHERE " .
2543                                                                    "ref_id = ttrss_entries.id AND " .
2544                                                                    "ttrss_user_entries.owner_uid = $owner_uid AND " .
2545                                                                    "post_int_id = int_id AND $tag_sql AND " .
2546                                                                    $view_query_part .
2547                                                                    $search_query_part .
2548                                                                    $query_strategy_part . " ORDER BY $order_by " .
2549                                                                    $limit_query_part;
2550
2551                                 } else {
2552                                         $i = 1;
2553                                         $sub_selects = array();
2554                                         $sub_ands = array();
2555                                         foreach ($all_tags as $term) {
2556                                                 array_push($sub_selects, "(SELECT post_int_id from ttrss_tags WHERE tag_name = " . db_quote($term) . " AND owner_uid = $owner_uid) as A$i");
2557                                                 $i++;
2558                                         }
2559                                         if ($i > 2) {
2560                                                 $x = 1;
2561                                                 $y = 2;
2562                                                 do {
2563                                                         array_push($sub_ands, "A$x.post_int_id = A$y.post_int_id");
2564                                                         $x++;
2565                                                         $y++;
2566                                                 } while ($y < $i);
2567                                         }
2568                                         array_push($sub_ands, "A1.post_int_id = ttrss_user_entries.int_id and ttrss_user_entries.owner_uid = $owner_uid");
2569                                         array_push($sub_ands, "ttrss_user_entries.ref_id = ttrss_entries.id");
2570                                         $from_qpart = " FROM " . implode(", ", $sub_selects) . ", ttrss_user_entries, ttrss_entries";
2571                                         $where_qpart = " WHERE " . implode(" AND ", $sub_ands);
2572                                 }
2573                                 //                              error_log("TAG SQL: " . $tag_sql);
2574                                 // $tag_sql = "tag_name = '$feed'";   DEFAULT way
2575
2576                                 //                              error_log("[". $select_qpart . "][" . $from_qpart . "][" .$where_qpart . "]");
2577                                 $result = db_query($link, $select_qpart . $from_qpart . $where_qpart);
2578                         }
2579
2580                         return array($result, $feed_title, $feed_site_url, $last_error);
2581
2582         }
2583
2584         function sanitize($link, $str, $force_remove_images = false, $owner = false, $site_url = false) {
2585                 if (!$owner) $owner = $_SESSION["uid"];
2586
2587                 $res = trim($str); if (!$res) return '';
2588
2589                 if (strpos($res, "href=") === false)
2590                         $res = rewrite_urls($res);
2591
2592                 $charset_hack = '<head>
2593                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
2594                 </head>';
2595
2596                 $res = trim($res); if (!$res) return '';
2597
2598                 libxml_use_internal_errors(true);
2599
2600                 $doc = new DOMDocument();
2601                 $doc->loadHTML($charset_hack . $res);
2602                 $xpath = new DOMXPath($doc);
2603
2604                 $entries = $xpath->query('(//a[@href]|//img[@src])');
2605
2606                 foreach ($entries as $entry) {
2607
2608                         if ($site_url) {
2609
2610                                 if ($entry->hasAttribute('href'))
2611                                         $entry->setAttribute('href',
2612                                                 rewrite_relative_url($site_url, $entry->getAttribute('href')));
2613
2614                                 if ($entry->hasAttribute('src')) {
2615                                         $src = rewrite_relative_url($site_url, $entry->getAttribute('src'));
2616
2617                                         $cached_filename = CACHE_DIR . '/images/' . sha1($src) . '.png';
2618
2619                                         if (file_exists($cached_filename)) {
2620                                                 $src = SELF_URL_PATH . '/image.php?hash=' . sha1($src);
2621                                         }
2622
2623                                         $entry->setAttribute('src', $src);
2624                                 }
2625
2626                                 if ($entry->nodeName == 'img') {
2627                                         if (($owner && get_pref($link, "STRIP_IMAGES", $owner)) ||
2628                                                         $force_remove_images || $_SESSION["bw_limit"]) {
2629
2630                                                 $p = $doc->createElement('p');
2631
2632                                                 $a = $doc->createElement('a');
2633                                                 $a->setAttribute('href', $entry->getAttribute('src'));
2634
2635                                                 $a->appendChild(new DOMText($entry->getAttribute('src')));
2636                                                 $a->setAttribute('target', '_blank');
2637
2638                                                 $p->appendChild($a);
2639
2640                                                 $entry->parentNode->replaceChild($p, $entry);
2641                                         }
2642                                 }
2643                         }
2644
2645                         if (strtolower($entry->nodeName) == "a") {
2646                                 $entry->setAttribute("target", "_blank");
2647                         }
2648                 }
2649
2650                 $entries = $xpath->query('//iframe');
2651                 foreach ($entries as $entry) {
2652                         $entry->setAttribute('sandbox', 'allow-scripts');
2653
2654                 }
2655
2656                 $allowed_elements = array('a', 'address', 'audio', 'article',
2657                         'b', 'big', 'blockquote', 'body', 'br', 'cite', 'center',
2658                         'code', 'dd', 'del', 'details', 'div', 'dl', 'font',
2659                         'dt', 'em', 'footer', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6',
2660                         'header', 'html', 'i', 'img', 'ins', 'kbd',
2661                         'li', 'nav', 'noscript', 'ol', 'p', 'pre', 'q', 's','small',
2662                         'source', 'span', 'strike', 'strong', 'sub', 'summary',
2663                         'sup', 'table', 'tbody', 'td', 'tfoot', 'th', 'thead',
2664                         'tr', 'track', 'tt', 'u', 'ul', 'var', 'wbr', 'video' );
2665
2666                 if ($_SESSION['hasSandbox']) $allowed_elements[] = 'iframe';
2667
2668                 $disallowed_attributes = array('id', 'style', 'class');
2669
2670                 global $pluginhost;
2671
2672                 if (isset($pluginhost)) {
2673                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_SANITIZE) as $plugin) {
2674                                 $retval = $plugin->hook_sanitize($doc, $site_url, $allowed_elements, $disallowed_attributes);
2675                                 if (is_array($retval)) {
2676                                         $doc = $retval[0];
2677                                         $allowed_elements = $retval[1];
2678                                         $disallowed_attributes = $retval[2];
2679                                 } else {
2680                                         $doc = $retval;
2681                                 }
2682                         }
2683                 }
2684
2685                 $doc->removeChild($doc->firstChild); //remove doctype
2686                 $doc = strip_harmful_tags($doc, $allowed_elements, $disallowed_attributes);
2687                 $res = $doc->saveHTML();
2688                 return $res;
2689         }
2690
2691         function strip_harmful_tags($doc, $allowed_elements, $disallowed_attributes) {
2692                 $entries = $doc->getElementsByTagName("*");
2693
2694                 foreach ($entries as $entry) {
2695                         if (!in_array($entry->nodeName, $allowed_elements)) {
2696                                 $entry->parentNode->removeChild($entry);
2697                         }
2698
2699                         if ($entry->hasAttributes()) {
2700                                 $attrs_to_remove = array();
2701
2702                                 foreach ($entry->attributes as $attr) {
2703
2704                                         if (strpos($attr->nodeName, 'on') === 0) {
2705                                                 array_push($attrs_to_remove, $attr);
2706                                         }
2707
2708                                         if (in_array($attr->nodeName, $disallowed_attributes)) {
2709                                                 array_push($attrs_to_remove, $attr);
2710                                         }
2711                                 }
2712
2713                                 foreach ($attrs_to_remove as $attr) {
2714                                         $entry->removeAttributeNode($attr);
2715                                 }
2716                         }
2717                 }
2718
2719                 return $doc;
2720         }
2721
2722         function check_for_update($link) {
2723                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2724                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION .
2725                                 "&iid=" . sha1(SELF_URL_PATH);
2726
2727                         $version_data = @fetch_file_contents($version_url);
2728
2729                         if ($version_data) {
2730                                 $version_data = json_decode($version_data, true);
2731                                 if ($version_data && $version_data['version']) {
2732
2733                                         if (version_compare(VERSION, $version_data['version']) == -1) {
2734                                                 return $version_data;
2735                                         }
2736                                 }
2737                         }
2738                 }
2739                 return false;
2740         }
2741
2742         function catchupArticlesById($link, $ids, $cmode, $owner_uid = false) {
2743
2744                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2745                 if (count($ids) == 0) return;
2746
2747                 $tmp_ids = array();
2748
2749                 foreach ($ids as $id) {
2750                         array_push($tmp_ids, "ref_id = '$id'");
2751                 }
2752
2753                 $ids_qpart = join(" OR ", $tmp_ids);
2754
2755                 if ($cmode == 0) {
2756                         db_query($link, "UPDATE ttrss_user_entries SET
2757                         unread = false,last_read = NOW()
2758                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2759                 } else if ($cmode == 1) {
2760                         db_query($link, "UPDATE ttrss_user_entries SET
2761                         unread = true
2762                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2763                 } else {
2764                         db_query($link, "UPDATE ttrss_user_entries SET
2765                         unread = NOT unread,last_read = NOW()
2766                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2767                 }
2768
2769                 /* update ccache */
2770
2771                 $result = db_query($link, "SELECT DISTINCT feed_id FROM ttrss_user_entries
2772                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2773
2774                 while ($line = db_fetch_assoc($result)) {
2775                         ccache_update($link, $line["feed_id"], $owner_uid);
2776                 }
2777         }
2778
2779         function get_article_tags($link, $id, $owner_uid = 0, $tag_cache = false) {
2780
2781                 $a_id = db_escape_string($link, $id);
2782
2783                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2784
2785                 $query = "SELECT DISTINCT tag_name,
2786                         owner_uid as owner FROM
2787                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
2788                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
2789
2790                 $obj_id = md5("TAGS:$owner_uid:$id");
2791                 $tags = array();
2792
2793                 /* check cache first */
2794
2795                 if ($tag_cache === false) {
2796                         $result = db_query($link, "SELECT tag_cache FROM ttrss_user_entries
2797                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2798
2799                         $tag_cache = db_fetch_result($result, 0, "tag_cache");
2800                 }
2801
2802                 if ($tag_cache) {
2803                         $tags = explode(",", $tag_cache);
2804                 } else {
2805
2806                         /* do it the hard way */
2807
2808                         $tmp_result = db_query($link, $query);
2809
2810                         while ($tmp_line = db_fetch_assoc($tmp_result)) {
2811                                 array_push($tags, $tmp_line["tag_name"]);
2812                         }
2813
2814                         /* update the cache */
2815
2816                         $tags_str = db_escape_string($link, join(",", $tags));
2817
2818                         db_query($link, "UPDATE ttrss_user_entries
2819                                 SET tag_cache = '$tags_str' WHERE ref_id = '$id'
2820                                 AND owner_uid = $owner_uid");
2821                 }
2822
2823                 return $tags;
2824         }
2825
2826         function trim_array($array) {
2827                 $tmp = $array;
2828                 array_walk($tmp, 'trim');
2829                 return $tmp;
2830         }
2831
2832         function tag_is_valid($tag) {
2833                 if ($tag == '') return false;
2834                 if (preg_match("/^[0-9]*$/", $tag)) return false;
2835                 if (mb_strlen($tag) > 250) return false;
2836
2837                 if (function_exists('iconv')) {
2838                         $tag = iconv("utf-8", "utf-8", $tag);
2839                 }
2840
2841                 if (!$tag) return false;
2842
2843                 return true;
2844         }
2845
2846         function render_login_form($link) {
2847                 require_once "login_form.php";
2848                 exit;
2849         }
2850
2851         // from http://developer.apple.com/internet/safari/faq.html
2852         function no_cache_incantation() {
2853                 header("Expires: Mon, 22 Dec 1980 00:00:00 GMT"); // Happy birthday to me :)
2854                 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
2855                 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); // HTTP/1.1
2856                 header("Cache-Control: post-check=0, pre-check=0", false);
2857                 header("Pragma: no-cache"); // HTTP/1.0
2858         }
2859
2860         function format_warning($msg, $id = "") {
2861                 global $link;
2862                 return "<div class=\"warning\" id=\"$id\">
2863                         <img src=\"images/sign_excl.svg\"><div class='inner'>$msg</div></div>";
2864         }
2865
2866         function format_notice($msg, $id = "") {
2867                 global $link;
2868                 return "<div class=\"notice\" id=\"$id\">
2869                         <img src=\"images/sign_info.svg\"><div class='inner'>$msg</div></div>";
2870         }
2871
2872         function format_error($msg, $id = "") {
2873                 global $link;
2874                 return "<div class=\"error\" id=\"$id\">
2875                         <img src=\"images/sign_excl.svg\"><div class='inner'>$msg</div></div>";
2876         }
2877
2878         function print_notice($msg) {
2879                 return print format_notice($msg);
2880         }
2881
2882         function print_warning($msg) {
2883                 return print format_warning($msg);
2884         }
2885
2886         function print_error($msg) {
2887                 return print format_error($msg);
2888         }
2889
2890
2891         function T_sprintf() {
2892                 $args = func_get_args();
2893                 return vsprintf(__(array_shift($args)), $args);
2894         }
2895
2896         function format_inline_player($link, $url, $ctype) {
2897
2898                 $entry = "";
2899
2900                 $url = htmlspecialchars($url);
2901
2902                 if (strpos($ctype, "audio/") === 0) {
2903
2904                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
2905                                 strpos($_SERVER['HTTP_USER_AGENT'], "Chrome") !== false ||
2906                                 strpos($_SERVER['HTTP_USER_AGENT'], "Safari") !== false )) {
2907
2908                                 $id = 'AUDIO-' . uniqid();
2909
2910                                 $entry .= "<audio id=\"$id\"\" controls style='display : none'>
2911                                         <source type=\"$ctype\" src=\"$url\"></source>
2912                                         </audio>";
2913
2914                                 $entry .= "<span onclick=\"player(this)\"
2915                                         title=\"".__("Click to play")."\" status=\"0\"
2916                                         class=\"player\" audio-id=\"$id\">".__("Play")."</span>";
2917
2918                         } else {
2919
2920                                 $entry .= "<object type=\"application/x-shockwave-flash\"
2921                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
2922                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
2923                                         <param name=\"movie\"
2924                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
2925                                         </object>";
2926                         }
2927
2928                         if ($entry) $entry .= "&nbsp; <a target=\"_blank\"
2929                                 href=\"$url\">" . basename($url) . "</a>";
2930
2931                         return $entry;
2932
2933                 }
2934
2935                 return "";
2936
2937 /*              $filename = substr($url, strrpos($url, "/")+1);
2938
2939                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
2940                         $filename . " (" . $ctype . ")" . "</a>"; */
2941
2942         }
2943
2944         function format_article($link, $id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
2945                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2946
2947                 $rv = array();
2948
2949                 $rv['id'] = $id;
2950
2951                 /* we can figure out feed_id from article id anyway, why do we
2952                  * pass feed_id here? let's ignore the argument :( */
2953
2954                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
2955                         WHERE ref_id = '$id'");
2956
2957                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
2958
2959                 $rv['feed_id'] = $feed_id;
2960
2961                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
2962
2963                 if ($mark_as_read) {
2964                         $result = db_query($link, "UPDATE ttrss_user_entries
2965                                 SET unread = false,last_read = NOW()
2966                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2967
2968                         ccache_update($link, $feed_id, $owner_uid);
2969                 }
2970
2971                 $result = db_query($link, "SELECT id,title,link,content,feed_id,comments,int_id,
2972                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
2973                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
2974                         (SELECT hide_images FROM ttrss_feeds WHERE id = feed_id) as hide_images,
2975                         num_comments,
2976                         tag_cache,
2977                         author,
2978                         orig_feed_id,
2979                         note,
2980                         cached_content
2981                         FROM ttrss_entries,ttrss_user_entries
2982                         WHERE   id = '$id' AND ref_id = id AND owner_uid = $owner_uid");
2983
2984                 if ($result) {
2985
2986                         $line = db_fetch_assoc($result);
2987
2988                         $tag_cache = $line["tag_cache"];
2989
2990                         $line["tags"] = get_article_tags($link, $id, $owner_uid, $line["tag_cache"]);
2991                         unset($line["tag_cache"]);
2992
2993                         $line["content"] = sanitize($link, $line["content"], false, $owner_uid, $line["site_url"]);
2994
2995                         global $pluginhost;
2996
2997                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_RENDER_ARTICLE) as $p) {
2998                                 $line = $p->hook_render_article($line);
2999                         }
3000
3001                         $num_comments = $line["num_comments"];
3002                         $entry_comments = "";
3003
3004                         if ($num_comments > 0) {
3005                                 if ($line["comments"]) {
3006                                         $comments_url = htmlspecialchars($line["comments"]);
3007                                 } else {
3008                                         $comments_url = htmlspecialchars($line["link"]);
3009                                 }
3010                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
3011                         } else {
3012                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
3013                                         $entry_comments = "<a target='_blank' href=\"".htmlspecialchars($line["comments"])."\">comments</a>";
3014                                 }
3015                         }
3016
3017                         if ($zoom_mode) {
3018                                 header("Content-Type: text/html");
3019                                 $rv['content'] .= "<html><head>
3020                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
3021                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
3022                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
3023                                         </head><body id=\"ttrssZoom\">";
3024                         }
3025
3026                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
3027
3028                         $rv['content'] .= "<div class=\"postHeader\" id=\"POSTHDR-$id\">";
3029
3030                         $entry_author = $line["author"];
3031
3032                         if ($entry_author) {
3033                                 $entry_author = __(" - ") . $entry_author;
3034                         }
3035
3036                         $parsed_updated = make_local_datetime($link, $line["updated"], true,
3037                                 $owner_uid, true);
3038
3039                         $rv['content'] .= "<div class=\"postDate\">$parsed_updated</div>";
3040
3041                         if ($line["link"]) {
3042                                 $rv['content'] .= "<div class='postTitle'><a target='_blank'
3043                                         title=\"".htmlspecialchars($line['title'])."\"
3044                                         href=\"" .
3045                                         htmlspecialchars($line["link"]) . "\">" .
3046                                         $line["title"] . "</a>" .
3047                                         "<span class='author'>$entry_author</span></div>";
3048                         } else {
3049                                 $rv['content'] .= "<div class='postTitle'>" . $line["title"] . "$entry_author</div>";
3050                         }
3051
3052                         $tags_str = format_tags_string($line["tags"], $id);
3053                         $tags_str_full = join(", ", $line["tags"]);
3054
3055                         if (!$tags_str_full) $tags_str_full = __("no tags");
3056
3057                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
3058
3059                         $rv['content'] .= "<div class='postTags' style='float : right'>
3060                                 <img src='images/tag.png'
3061                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
3062
3063                         if (!$zoom_mode) {
3064                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
3065                                         <a title=\"".__('Edit tags for this article')."\"
3066                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
3067
3068                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
3069                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
3070                                         position=\"below\">$tags_str_full</div>";
3071
3072                                 global $pluginhost;
3073
3074                                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_ARTICLE_BUTTON) as $p) {
3075                                         $rv['content'] .= $p->hook_article_button($line);
3076                                 }
3077
3078
3079                         } else {
3080                                 $tags_str = strip_tags($tags_str);
3081                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
3082                         }
3083                         $rv['content'] .= "</div>";
3084                         $rv['content'] .= "<div clear='both'>$entry_comments</div>";
3085
3086                         if ($line["orig_feed_id"]) {
3087
3088                                 $tmp_result = db_query($link, "SELECT * FROM ttrss_archived_feeds
3089                                         WHERE id = ".$line["orig_feed_id"]);
3090
3091                                 if (db_num_rows($tmp_result) != 0) {
3092
3093                                         $rv['content'] .= "<div clear='both'>";
3094                                         $rv['content'] .= __("Originally from:");
3095
3096                                         $rv['content'] .= "&nbsp;";
3097
3098                                         $tmp_line = db_fetch_assoc($tmp_result);
3099
3100                                         $rv['content'] .= "<a target='_blank'
3101                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
3102                                                 $tmp_line['title'] . "</a>";
3103
3104                                         $rv['content'] .= "&nbsp;";
3105
3106                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3107                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.svg'></a>";
3108
3109                                         $rv['content'] .= "</div>";
3110                                 }
3111                         }
3112
3113                         $rv['content'] .= "</div>";
3114
3115                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3116                                 if ($line['note']) {
3117                                         $rv['content'] .= format_article_note($id, $line['note'], !$zoom_mode);
3118                                 }
3119                         $rv['content'] .= "</div>";
3120
3121                         $rv['content'] .= "<div class=\"postContent\">";
3122
3123                         $rv['content'] .= $line["content"];
3124
3125                         $rv['content'] .= format_article_enclosures($link, $id,
3126                                 $always_display_enclosures, $line["content"], $line["hide_images"]);
3127
3128                         $rv['content'] .= "</div>";
3129
3130                         $rv['content'] .= "</div>";
3131
3132                 }
3133
3134                 if ($zoom_mode) {
3135                         $rv['content'] .= "
3136                                 <div class='footer'>
3137                                 <button onclick=\"return window.close()\">".
3138                                         __("Close this window")."</button></div>";
3139                         $rv['content'] .= "</body></html>";
3140                 }
3141
3142                 return $rv;
3143
3144         }
3145
3146         function print_checkpoint($n, $s) {
3147                 $ts = microtime(true);
3148                 echo sprintf("<!-- CP[$n] %.4f seconds -->", $ts - $s);
3149                 return $ts;
3150         }
3151
3152         function sanitize_tag($tag) {
3153                 $tag = trim($tag);
3154
3155                 $tag = mb_strtolower($tag, 'utf-8');
3156
3157                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3158
3159 //              $tag = str_replace('"', "", $tag);
3160 //              $tag = str_replace("+", " ", $tag);
3161                 $tag = str_replace("technorati tag: ", "", $tag);
3162
3163                 return $tag;
3164         }
3165
3166         function get_self_url_prefix() {
3167                 if (strrpos(SELF_URL_PATH, "/") === strlen(SELF_URL_PATH)-1) {
3168                         return substr(SELF_URL_PATH, 0, strlen(SELF_URL_PATH)-1);
3169                 } else {
3170                         return SELF_URL_PATH;
3171                 }
3172         }
3173
3174         /**
3175          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3176          *
3177          * @return string The Mozilla Firefox feed adding URL.
3178          */
3179         function add_feed_url() {
3180                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3181
3182                 $url_path = get_self_url_prefix() .
3183                         "/public.php?op=subscribe&feed_url=%s";
3184                 return $url_path;
3185         } // function add_feed_url
3186
3187         function encrypt_password($pass, $salt = '', $mode2 = false) {
3188                 if ($salt && $mode2) {
3189                         return "MODE2:" . hash('sha256', $salt . $pass);
3190                 } else if ($salt) {
3191                         return "SHA1X:" . sha1("$salt:$pass");
3192                 } else {
3193                         return "SHA1:" . sha1($pass);
3194                 }
3195         } // function encrypt_password
3196
3197         function load_filters($link, $feed_id, $owner_uid, $action_id = false) {
3198                 $filters = array();
3199
3200                 $cat_id = (int)getFeedCategory($link, $feed_id);
3201
3202                 $result = db_query($link, "SELECT * FROM ttrss_filters2 WHERE
3203                         owner_uid = $owner_uid AND enabled = true ORDER BY order_id, title");
3204
3205                 $check_cats = join(",", array_merge(
3206                         getParentCategories($link, $cat_id, $owner_uid),
3207                         array($cat_id)));
3208
3209                 while ($line = db_fetch_assoc($result)) {
3210                         $filter_id = $line["id"];
3211
3212                         $result2 = db_query($link, "SELECT
3213                                 r.reg_exp, r.inverse, r.feed_id, r.cat_id, r.cat_filter, t.name AS type_name
3214                                 FROM ttrss_filters2_rules AS r,
3215                                 ttrss_filter_types AS t
3216                                 WHERE
3217                                         (cat_id IS NULL OR cat_id IN ($check_cats)) AND
3218                                         (feed_id IS NULL OR feed_id = '$feed_id') AND
3219                                         filter_type = t.id AND filter_id = '$filter_id'");
3220
3221                         $rules = array();
3222                         $actions = array();
3223
3224                         while ($rule_line = db_fetch_assoc($result2)) {
3225 #                               print_r($rule_line);
3226
3227                                 $rule = array();
3228                                 $rule["reg_exp"] = $rule_line["reg_exp"];
3229                                 $rule["type"] = $rule_line["type_name"];
3230                                 $rule["inverse"] = sql_bool_to_bool($rule_line["inverse"]);
3231
3232                                 array_push($rules, $rule);
3233                         }
3234
3235                         $result2 = db_query($link, "SELECT a.action_param,t.name AS type_name
3236                                 FROM ttrss_filters2_actions AS a,
3237                                 ttrss_filter_actions AS t
3238                                 WHERE
3239                                         action_id = t.id AND filter_id = '$filter_id'");
3240
3241                         while ($action_line = db_fetch_assoc($result2)) {
3242 #                               print_r($action_line);
3243
3244                                 $action = array();
3245                                 $action["type"] = $action_line["type_name"];
3246                                 $action["param"] = $action_line["action_param"];
3247
3248                                 array_push($actions, $action);
3249                         }
3250
3251
3252                         $filter = array();
3253                         $filter["match_any_rule"] = sql_bool_to_bool($line["match_any_rule"]);
3254                         $filter["inverse"] = sql_bool_to_bool($line["inverse"]);
3255                         $filter["rules"] = $rules;
3256                         $filter["actions"] = $actions;
3257
3258                         if (count($rules) > 0 && count($actions) > 0) {
3259                                 array_push($filters, $filter);
3260                         }
3261                 }
3262
3263                 return $filters;
3264         }
3265
3266         function get_score_pic($score) {
3267                 if ($score > 100) {
3268                         return "score_high.png";
3269                 } else if ($score > 0) {
3270                         return "score_half_high.png";
3271                 } else if ($score < -100) {
3272                         return "score_low.png";
3273                 } else if ($score < 0) {
3274                         return "score_half_low.png";
3275                 } else {
3276                         return "score_neutral.png";
3277                 }
3278         }
3279
3280         function feed_has_icon($id) {
3281                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3282         }
3283
3284         function init_connection($link) {
3285                 if ($link) {
3286
3287                         if (DB_TYPE == "pgsql") {
3288                                 pg_query($link, "set client_encoding = 'UTF-8'");
3289                                 pg_set_client_encoding("UNICODE");
3290                                 pg_query($link, "set datestyle = 'ISO, european'");
3291                                 pg_query($link, "set TIME ZONE 0");
3292                         } else {
3293                                 db_query($link, "SET time_zone = '+0:0'");
3294
3295                                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
3296                                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
3297                                 }
3298                         }
3299
3300                         global $pluginhost;
3301
3302                         $pluginhost = new PluginHost($link);
3303                         $pluginhost->load(PLUGINS, $pluginhost::KIND_ALL);
3304
3305                         return true;
3306                 } else {
3307                         print "Unable to connect to database:" . db_last_error();
3308                         return false;
3309                 }
3310         }
3311
3312         function format_tags_string($tags, $id) {
3313
3314                 $tags_str = "";
3315                 $tags_nolinks_str = "";
3316
3317                 $num_tags = 0;
3318
3319                 $tag_limit = 6;
3320
3321                 $formatted_tags = array();
3322
3323                 foreach ($tags as $tag) {
3324                         $num_tags++;
3325                         $tag_escaped = str_replace("'", "\\'", $tag);
3326
3327                         if (mb_strlen($tag) > 30) {
3328                                 $tag = truncate_string($tag, 30);
3329                         }
3330
3331                         $tag_str = "<a href=\"javascript:viewfeed('$tag_escaped')\">$tag</a>";
3332
3333                         array_push($formatted_tags, $tag_str);
3334
3335                         $tmp_tags_str = implode(", ", $formatted_tags);
3336
3337                         if ($num_tags == $tag_limit || mb_strlen($tmp_tags_str) > 150) {
3338                                 break;
3339                         }
3340                 }
3341
3342                 $tags_str = implode(", ", $formatted_tags);
3343
3344                 if ($num_tags < count($tags)) {
3345                         $tags_str .= ", &hellip;";
3346                 }
3347
3348                 if ($num_tags == 0) {
3349                         $tags_str = __("no tags");
3350                 }
3351
3352                 return $tags_str;
3353
3354         }
3355
3356         function format_article_labels($labels, $id) {
3357
3358                 $labels_str = "";
3359
3360                 foreach ($labels as $l) {
3361                         $labels_str .= sprintf("<span class='hlLabelRef'
3362                                 style='color : %s; background-color : %s'>%s</span>",
3363                                         $l[2], $l[3], $l[1]);
3364                         }
3365
3366                 return $labels_str;
3367
3368         }
3369
3370         function format_article_note($id, $note, $allow_edit = true) {
3371
3372                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
3373                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
3374                         ($allow_edit ? __('(edit note)') : "")."</div>$note</div>";
3375
3376                 return $str;
3377         }
3378
3379
3380         function get_feed_category($link, $feed_cat, $parent_cat_id = false) {
3381                 if ($parent_cat_id) {
3382                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3383                         $parent_insert = "'$parent_cat_id'";
3384                 } else {
3385                         $parent_qpart = "parent_cat IS NULL";
3386                         $parent_insert = "NULL";
3387                 }
3388
3389                 $result = db_query($link,
3390                         "SELECT id FROM ttrss_feed_categories
3391                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3392
3393                 if (db_num_rows($result) == 0) {
3394                         return false;
3395                 } else {
3396                         return db_fetch_result($result, 0, "id");
3397                 }
3398         }
3399
3400         function add_feed_category($link, $feed_cat, $parent_cat_id = false) {
3401
3402                 if (!$feed_cat) return false;
3403
3404                 db_query($link, "BEGIN");
3405
3406                 if ($parent_cat_id) {
3407                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3408                         $parent_insert = "'$parent_cat_id'";
3409                 } else {
3410                         $parent_qpart = "parent_cat IS NULL";
3411                         $parent_insert = "NULL";
3412                 }
3413
3414                 $feed_cat = mb_substr($feed_cat, 0, 250);
3415
3416                 $result = db_query($link,
3417                         "SELECT id FROM ttrss_feed_categories
3418                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3419
3420                 if (db_num_rows($result) == 0) {
3421
3422                         $result = db_query($link,
3423                                 "INSERT INTO ttrss_feed_categories (owner_uid,title,parent_cat)
3424                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat', $parent_insert)");
3425
3426                         db_query($link, "COMMIT");
3427
3428                         return true;
3429                 }
3430
3431                 return false;
3432         }
3433
3434         function getArticleFeed($link, $id) {
3435                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3436                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3437
3438                 if (db_num_rows($result) != 0) {
3439                         return db_fetch_result($result, 0, "feed_id");
3440                 } else {
3441                         return 0;
3442                 }
3443         }
3444
3445         /**
3446          * Fixes incomplete URLs by prepending "http://".
3447          * Also replaces feed:// with http://, and
3448          * prepends a trailing slash if the url is a domain name only.
3449          *
3450          * @param string $url Possibly incomplete URL
3451          *
3452          * @return string Fixed URL.
3453          */
3454         function fix_url($url) {
3455                 if (strpos($url, '://') === false) {
3456                         $url = 'http://' . $url;
3457                 } else if (substr($url, 0, 5) == 'feed:') {
3458                         $url = 'http:' . substr($url, 5);
3459                 }
3460
3461                 //prepend slash if the URL has no slash in it
3462                 // "http://www.example" -> "http://www.example/"
3463                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
3464                         $url .= '/';
3465                 }
3466
3467                 if ($url != "http:///")
3468                         return $url;
3469                 else
3470                         return '';
3471         }
3472
3473         function validate_feed_url($url) {
3474                 $parts = parse_url($url);
3475
3476                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
3477
3478         }
3479
3480         function get_article_enclosures($link, $id) {
3481
3482                 $query = "SELECT * FROM ttrss_enclosures
3483                         WHERE post_id = '$id' AND content_url != ''";
3484
3485                 $rv = array();
3486
3487                 $result = db_query($link, $query);
3488
3489                 if (db_num_rows($result) > 0) {
3490                         while ($line = db_fetch_assoc($result)) {
3491                                 array_push($rv, $line);
3492                         }
3493                 }
3494
3495                 return $rv;
3496         }
3497
3498         function save_email_address($link, $email) {
3499                 // FIXME: implement persistent storage of emails
3500
3501                 if (!$_SESSION['stored_emails'])
3502                         $_SESSION['stored_emails'] = array();
3503
3504                 if (!in_array($email, $_SESSION['stored_emails']))
3505                         array_push($_SESSION['stored_emails'], $email);
3506         }
3507
3508
3509         function get_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
3510
3511                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3512
3513                 $sql_is_cat = bool_to_sql_bool($is_cat);
3514
3515                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
3516                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
3517                         AND owner_uid = " . $owner_uid);
3518
3519                 if (db_num_rows($result) == 1) {
3520                         return db_fetch_result($result, 0, "access_key");
3521                 } else {
3522                         $key = db_escape_string($link, sha1(uniqid(rand(), true)));
3523
3524                         $result = db_query($link, "INSERT INTO ttrss_access_keys
3525                                 (access_key, feed_id, is_cat, owner_uid)
3526                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
3527
3528                         return $key;
3529                 }
3530                 return false;
3531         }
3532
3533         function get_feeds_from_html($url, $content)
3534         {
3535                 $url     = fix_url($url);
3536                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
3537
3538                 libxml_use_internal_errors(true);
3539
3540                 $doc = new DOMDocument();
3541                 $doc->loadHTML($content);
3542                 $xpath = new DOMXPath($doc);
3543                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
3544                 $feedUrls = array();
3545                 foreach ($entries as $entry) {
3546                         if ($entry->hasAttribute('href')) {
3547                                 $title = $entry->getAttribute('title');
3548                                 if ($title == '') {
3549                                         $title = $entry->getAttribute('type');
3550                                 }
3551                                 $feedUrl = rewrite_relative_url(
3552                                         $baseUrl, $entry->getAttribute('href')
3553                                 );
3554                                 $feedUrls[$feedUrl] = $title;
3555                         }
3556                 }
3557                 return $feedUrls;
3558         }
3559
3560         function is_html($content) {
3561                 return preg_match("/<html|DOCTYPE html/i", substr($content, 0, 20)) !== 0;
3562         }
3563
3564         function url_is_html($url, $login = false, $pass = false) {
3565                 return is_html(fetch_file_contents($url, false, $login, $pass));
3566         }
3567
3568         function print_label_select($link, $name, $value, $attributes = "") {
3569
3570                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
3571                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
3572
3573                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
3574                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
3575
3576                 while ($line = db_fetch_assoc($result)) {
3577
3578                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
3579
3580                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
3581                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
3582
3583                 }
3584
3585 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
3586
3587                 print "</select>";
3588
3589
3590         }
3591
3592         function format_article_enclosures($link, $id, $always_display_enclosures,
3593                                         $article_content, $hide_images = false) {
3594
3595                 $result = get_article_enclosures($link, $id);
3596                 $rv = '';
3597
3598                 if (count($result) > 0) {
3599
3600                         $entries_html = array();
3601                         $entries = array();
3602                         $entries_inline = array();
3603
3604                         foreach ($result as $line) {
3605
3606                                 $url = $line["content_url"];
3607                                 $ctype = $line["content_type"];
3608
3609                                 if (!$ctype) $ctype = __("unknown type");
3610
3611                                 $filename = substr($url, strrpos($url, "/")+1);
3612
3613                                 $player = format_inline_player($link, $url, $ctype);
3614
3615                                 if ($player) array_push($entries_inline, $player);
3616
3617 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3618 #                                       $filename . " (" . $ctype . ")" . "</a>";
3619
3620                                 $entry = "<div onclick=\"window.open('".htmlspecialchars($url)."')\"
3621                                         dojoType=\"dijit.MenuItem\">$filename ($ctype)</div>";
3622
3623                                 array_push($entries_html, $entry);
3624
3625                                 $entry = array();
3626
3627                                 $entry["type"] = $ctype;
3628                                 $entry["filename"] = $filename;
3629                                 $entry["url"] = $url;
3630
3631                                 array_push($entries, $entry);
3632                         }
3633
3634                         if ($_SESSION['uid'] && !get_pref($link, "STRIP_IMAGES") && !$_SESSION["bw_limit"]) {
3635                                 if ($always_display_enclosures ||
3636                                                         !preg_match("/<img/i", $article_content)) {
3637
3638                                         foreach ($entries as $entry) {
3639
3640                                                 if (preg_match("/image/", $entry["type"]) ||
3641                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
3642
3643                                                                 if (!$hide_images) {
3644                                                                         $rv .= "<p><img
3645                                                                         alt=\"".htmlspecialchars($entry["filename"])."\"
3646                                                                         src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
3647                                                                 } else {
3648                                                                         $rv .= "<p><a target=\"_blank\"
3649                                                                         href=\"".htmlspecialchars($entry["url"])."\"
3650                                                                         >" .htmlspecialchars($entry["url"]) . "</a></p>";
3651
3652                                                                 }
3653                                                 }
3654                                         }
3655                                 }
3656                         }
3657
3658                         if (count($entries_inline) > 0) {
3659                                 $rv .= "<hr clear='both'/>";
3660                                 foreach ($entries_inline as $entry) { $rv .= $entry; };
3661                                 $rv .= "<hr clear='both'/>";
3662                         }
3663
3664                         $rv .= "<select class=\"attachments\" onchange=\"openSelectedAttachment(this)\">".
3665                                 "<option value=''>" . __('Attachments')."</option>";
3666
3667                         foreach ($entries as $entry) {
3668                                 $rv .= "<option value=\"".htmlspecialchars($entry["url"])."\">" . htmlspecialchars($entry["filename"]) . "</option>";
3669
3670                         };
3671
3672                         $rv .= "</select>";
3673                 }
3674
3675                 return $rv;
3676         }
3677
3678         function getLastArticleId($link) {
3679                 $result = db_query($link, "SELECT MAX(ref_id) AS id FROM ttrss_user_entries
3680                         WHERE owner_uid = " . $_SESSION["uid"]);
3681
3682                 if (db_num_rows($result) == 1) {
3683                         return db_fetch_result($result, 0, "id");
3684                 } else {
3685                         return -1;
3686                 }
3687         }
3688
3689         function build_url($parts) {
3690                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
3691         }
3692
3693         /**
3694          * Converts a (possibly) relative URL to a absolute one.
3695          *
3696          * @param string $url     Base URL (i.e. from where the document is)
3697          * @param string $rel_url Possibly relative URL in the document
3698          *
3699          * @return string Absolute URL
3700          */
3701         function rewrite_relative_url($url, $rel_url) {
3702                 if (strpos($rel_url, "magnet:") === 0) {
3703                         return $rel_url;
3704                 } else if (strpos($rel_url, "://") !== false) {
3705                         return $rel_url;
3706                 } else if (strpos($rel_url, "//") === 0) {
3707                         # protocol-relative URL (rare but they exist)
3708                         return $rel_url;
3709                 } else if (strpos($rel_url, "/") === 0)
3710                 {
3711                         $parts = parse_url($url);
3712                         $parts['path'] = $rel_url;
3713
3714                         return build_url($parts);
3715
3716                 } else {
3717                         $parts = parse_url($url);
3718                         if (!isset($parts['path'])) {
3719                                 $parts['path'] = '/';
3720                         }
3721                         $dir = $parts['path'];
3722                         if (substr($dir, -1) !== '/') {
3723                                 $dir = dirname($parts['path']);
3724                                 $dir !== '/' && $dir .= '/';
3725                         }
3726                         $parts['path'] = $dir . $rel_url;
3727
3728                         return build_url($parts);
3729                 }
3730         }
3731
3732         function sphinx_search($query, $offset = 0, $limit = 30) {
3733                 require_once 'lib/sphinxapi.php';
3734
3735                 $sphinxClient = new SphinxClient();
3736
3737                 $sphinxClient->SetServer('localhost', 9312);
3738                 $sphinxClient->SetConnectTimeout(1);
3739
3740                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
3741                         'feed_title' => 20));
3742
3743                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
3744                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
3745                 $sphinxClient->SetLimits($offset, $limit, 1000);
3746                 $sphinxClient->SetArrayResult(false);
3747                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
3748
3749                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
3750
3751                 $ids = array();
3752
3753                 if (is_array($result['matches'])) {
3754                         foreach (array_keys($result['matches']) as $int_id) {
3755                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
3756                                 array_push($ids, $ref_id);
3757                         }
3758                 }
3759
3760                 return $ids;
3761         }
3762
3763         function cleanup_tags($link, $days = 14, $limit = 1000) {
3764
3765                 if (DB_TYPE == "pgsql") {
3766                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
3767                 } else if (DB_TYPE == "mysql") {
3768                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
3769                 }
3770
3771                 $tags_deleted = 0;
3772
3773                 while ($limit > 0) {
3774                         $limit_part = 500;
3775
3776                         $query = "SELECT ttrss_tags.id AS id
3777                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
3778                                 WHERE post_int_id = int_id AND $interval_query AND
3779                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
3780
3781                         $result = db_query($link, $query);
3782
3783                         $ids = array();
3784
3785                         while ($line = db_fetch_assoc($result)) {
3786                                 array_push($ids, $line['id']);
3787                         }
3788
3789                         if (count($ids) > 0) {
3790                                 $ids = join(",", $ids);
3791
3792                                 $tmp_result = db_query($link, "DELETE FROM ttrss_tags WHERE id IN ($ids)");
3793                                 $tags_deleted += db_affected_rows($link, $tmp_result);
3794                         } else {
3795                                 break;
3796                         }
3797
3798                         $limit -= $limit_part;
3799                 }
3800
3801                 return $tags_deleted;
3802         }
3803
3804         function print_user_stylesheet($link) {
3805                 $value = get_pref($link, 'USER_STYLESHEET');
3806
3807                 if ($value) {
3808                         print "<style type=\"text/css\">";
3809                         print str_replace("<br/>", "\n", $value);
3810                         print "</style>";
3811                 }
3812
3813         }
3814
3815         function rewrite_urls($html) {
3816                 libxml_use_internal_errors(true);
3817
3818                 $charset_hack = '<head>
3819                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
3820                 </head>';
3821
3822                 $doc = new DOMDocument();
3823                 $doc->loadHTML($charset_hack . $html);
3824                 $xpath = new DOMXPath($doc);
3825
3826                 $entries = $xpath->query('//*/text()');
3827
3828                 foreach ($entries as $entry) {
3829                         if (strstr($entry->wholeText, "://") !== false) {
3830                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
3831                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
3832
3833                                 if ($text != $entry->wholeText) {
3834                                         $cdoc = new DOMDocument();
3835                                         $cdoc->loadHTML($charset_hack . $text);
3836
3837
3838                                         foreach ($cdoc->childNodes as $cnode) {
3839                                                 $cnode = $doc->importNode($cnode, true);
3840
3841                                                 if ($cnode) {
3842                                                         $entry->parentNode->insertBefore($cnode);
3843                                                 }
3844                                         }
3845
3846                                         $entry->parentNode->removeChild($entry);
3847
3848                                 }
3849                         }
3850                 }
3851
3852                 $node = $doc->getElementsByTagName('body')->item(0);
3853
3854                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
3855                 if ($node)
3856                         return $doc->saveXML($node);
3857                 else
3858                         return $html;
3859         }
3860
3861         function filter_to_sql($link, $filter, $owner_uid) {
3862                 $query = array();
3863
3864                 if (DB_TYPE == "pgsql")
3865                         $reg_qpart = "~";
3866                 else
3867                         $reg_qpart = "REGEXP";
3868
3869                 foreach ($filter["rules"] AS $rule) {
3870                         $regexp_valid = preg_match('/' . $rule['reg_exp'] . '/',
3871                                 $rule['reg_exp']) !== FALSE;
3872
3873                         if ($regexp_valid) {
3874
3875                                 $rule['reg_exp'] = db_escape_string($link, $rule['reg_exp']);
3876
3877                                         switch ($rule["type"]) {
3878                                         case "title":
3879                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3880                                                         $rule['reg_exp'] . "')";
3881                                                 break;
3882                                         case "content":
3883                                                 $qpart = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
3884                                                         $rule['reg_exp'] . "')";
3885                                                 break;
3886                                         case "both":
3887                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3888                                                         $rule['reg_exp'] . "') OR LOWER(" .
3889                                                         "ttrss_entries.content) $reg_qpart LOWER('" . $rule['reg_exp'] . "')";
3890                                                 break;
3891                                         case "tag":
3892                                                 $qpart = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
3893                                                         $rule['reg_exp'] . "')";
3894                                                 break;
3895                                         case "link":
3896                                                 $qpart = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
3897                                                         $rule['reg_exp'] . "')";
3898                                                 break;
3899                                         case "author":
3900                                                 $qpart = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
3901                                                         $rule['reg_exp'] . "')";
3902                                                 break;
3903                                 }
3904
3905                                 if (isset($rule['inverse'])) $qpart = "NOT ($qpart)";
3906
3907                                 if (isset($rule["feed_id"]) && $rule["feed_id"] > 0) {
3908                                         $qpart .= " AND feed_id = " . db_escape_string($link, $rule["feed_id"]);
3909                                 }
3910
3911                                 if (isset($rule["cat_id"])) {
3912
3913                                         if ($rule["cat_id"] > 0) {
3914                                                 $children = getChildCategories($link, $rule["cat_id"], $owner_uid);
3915                                                 array_push($children, $rule["cat_id"]);
3916
3917                                                 $children = join(",", $children);
3918
3919                                                 $cat_qpart = "cat_id IN ($children)";
3920                                         } else {
3921                                                 $cat_qpart = "cat_id IS NULL";
3922                                         }
3923
3924                                         $qpart .= " AND $cat_qpart";
3925                                 }
3926
3927                                 array_push($query, "($qpart)");
3928
3929                         }
3930                 }
3931
3932                 if (count($query) > 0) {
3933                         $fullquery = "(" . join($filter["match_any_rule"] ? "OR" : "AND", $query) . ")";
3934                 } else {
3935                         $fullquery = "(false)";
3936                 }
3937
3938                 if ($filter['inverse']) $fullquery = "(NOT $fullquery)";
3939
3940                 return $fullquery;
3941         }
3942
3943         if (!function_exists('gzdecode')) {
3944                 function gzdecode($string) { // no support for 2nd argument
3945                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
3946                                 base64_encode($string));
3947                 }
3948         }
3949
3950         function get_random_bytes($length) {
3951                 if (function_exists('openssl_random_pseudo_bytes')) {
3952                         return openssl_random_pseudo_bytes($length);
3953                 } else {
3954                         $output = "";
3955
3956                         for ($i = 0; $i < $length; $i++)
3957                                 $output .= chr(mt_rand(0, 255));
3958
3959                         return $output;
3960                 }
3961         }
3962
3963         function read_stdin() {
3964                 $fp = fopen("php://stdin", "r");
3965
3966                 if ($fp) {
3967                         $line = trim(fgets($fp));
3968                         fclose($fp);
3969                         return $line;
3970                 }
3971
3972                 return null;
3973         }
3974
3975         function tmpdirname($path, $prefix) {
3976                 // Use PHP's tmpfile function to create a temporary
3977                 // directory name. Delete the file and keep the name.
3978                 $tempname = tempnam($path,$prefix);
3979                 if (!$tempname)
3980                         return false;
3981
3982                 if (!unlink($tempname))
3983                         return false;
3984
3985        return $tempname;
3986         }
3987
3988         function getFeedCategory($link, $feed) {
3989                 $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
3990                         WHERE id = '$feed'");
3991
3992                 if (db_num_rows($result) > 0) {
3993                         return db_fetch_result($result, 0, "cat_id");
3994                 } else {
3995                         return false;
3996                 }
3997
3998         }
3999
4000         function implements_interface($class, $interface) {
4001                 return in_array($interface, class_implements($class));
4002         }
4003
4004         function geturl($url){
4005
4006                 (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');
4007
4008                 $curl = curl_init();
4009                 $header[0] = "Accept: text/xml,application/xml,application/xhtml+xml,";
4010                 $header[0] .= "text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5";
4011                 $header[] = "Cache-Control: max-age=0";
4012                 $header[] = "Connection: keep-alive";
4013                 $header[] = "Keep-Alive: 300";
4014                 $header[] = "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7";
4015                 $header[] = "Accept-Language: en-us,en;q=0.5";
4016                 $header[] = "Pragma: ";
4017
4018                 curl_setopt($curl, CURLOPT_URL, $url);
4019                 curl_setopt($curl, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20100101 Firefox/5.0 Firefox/5.0');
4020                 curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
4021                 curl_setopt($curl, CURLOPT_HEADER, true);
4022                 curl_setopt($curl, CURLOPT_REFERER, $url);
4023                 curl_setopt($curl, CURLOPT_ENCODING, 'gzip,deflate');
4024                 curl_setopt($curl, CURLOPT_AUTOREFERER, true);
4025                 curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
4026                 //curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); //CURLOPT_FOLLOWLOCATION Disabled...
4027                 curl_setopt($curl, CURLOPT_TIMEOUT, 60);
4028
4029                 $html = curl_exec($curl);
4030
4031                 $status = curl_getinfo($curl);
4032                 curl_close($curl);
4033
4034                 if($status['http_code']!=200){
4035                         if($status['http_code'] == 301 || $status['http_code'] == 302) {
4036                                 list($header) = explode("\r\n\r\n", $html, 2);
4037                                 $matches = array();
4038                                 preg_match("/(Location:|URI:)[^(\n)]*/", $header, $matches);
4039                                 $url = trim(str_replace($matches[1],"",$matches[0]));
4040                                 $url_parsed = parse_url($url);
4041                                 return (isset($url_parsed))? geturl($url, $referer):'';
4042                         }
4043                         $oline='';
4044                         foreach($status as $key=>$eline){$oline.='['.$key.']'.$eline.' ';}
4045                         $line =$oline." \r\n ".$url."\r\n-----------------\r\n";
4046 #                       $handle = @fopen('./curl.error.log', 'a');
4047 #                       fwrite($handle, $line);
4048                         return FALSE;
4049                 }
4050                 return $url;
4051         }
4052
4053         function get_minified_js($files) {
4054                 require_once 'lib/jshrink/Minifier.php';
4055
4056                 $rv = '';
4057
4058                 foreach ($files as $js) {
4059                         if (!isset($_GET['debug'])) {
4060                                 $cached_file = CACHE_DIR . "/js/$js.js";
4061
4062                                 if (file_exists($cached_file) &&
4063                                                 is_readable($cached_file) &&
4064                                                 filemtime($cached_file) >= filemtime("js/$js.js")) {
4065
4066                                         $rv .= file_get_contents($cached_file);
4067
4068                                 } else {
4069                                         $minified = JShrink\Minifier::minify(file_get_contents("js/$js.js"));
4070                                         file_put_contents($cached_file, $minified);
4071                                         $rv .= $minified;
4072                                 }
4073                         } else {
4074                                 $rv .= file_get_contents("js/$js.js");
4075                         }
4076                 }
4077
4078                 return $rv;
4079         }
4080
4081         function stylesheet_tag($filename) {
4082                 $timestamp = filemtime($filename);
4083
4084                 echo "<link rel=\"stylesheet\" type=\"text/css\" href=\"$filename?$timestamp\"/>\n";
4085         }
4086
4087         function javascript_tag($filename) {
4088                 $query = "";
4089
4090                 if (!(strpos($filename, "?") === FALSE)) {
4091                         $query = substr($filename, strpos($filename, "?")+1);
4092                         $filename = substr($filename, 0, strpos($filename, "?"));
4093                 }
4094
4095                 $timestamp = filemtime($filename);
4096
4097                 if ($query) $timestamp .= "&$query";
4098
4099                 echo "<script type=\"text/javascript\" charset=\"utf-8\" src=\"$filename?$timestamp\"></script>\n";
4100         }
4101
4102         function calculate_dep_timestamp() {
4103                 $files = array_merge(glob("js/*.js"), glob("*.css"));
4104
4105                 $max_ts = -1;
4106
4107                 foreach ($files as $file) {
4108                         if (filemtime($file) > $max_ts) $max_ts = filemtime($file);
4109                 }
4110
4111                 return $max_ts;
4112         }
4113
4114         function T_js_decl($s1, $s2) {
4115                 if ($s1 && $s2) {
4116                         $s1 = preg_replace("/\n/", "", $s1);
4117                         $s2 = preg_replace("/\n/", "", $s2);
4118
4119                         $s1 = preg_replace("/\"/", "\\\"", $s1);
4120                         $s2 = preg_replace("/\"/", "\\\"", $s2);
4121
4122                         return "T_messages[\"$s1\"] = \"$s2\";\n";
4123                 }
4124         }
4125
4126         function init_js_translations() {
4127
4128         print 'var T_messages = new Object();
4129
4130                 function __(msg) {
4131                         if (T_messages[msg]) {
4132                                 return T_messages[msg];
4133                         } else {
4134                                 return msg;
4135                         }
4136                 }
4137
4138                 function ngettext(msg1, msg2, n) {
4139                         return (parseInt(n) > 1) ? msg2 : msg1;
4140                 }';
4141
4142                 $l10n = _get_reader();
4143
4144                 for ($i = 0; $i < $l10n->total; $i++) {
4145                         $orig = $l10n->get_original_string($i);
4146                         $translation = __($orig);
4147
4148                         print T_js_decl($orig, $translation);
4149                 }
4150         }
4151
4152         function label_to_feed_id($label) {
4153                 return LABEL_BASE_INDEX - 1 - abs($label);
4154         }
4155
4156         function feed_to_label_id($feed) {
4157                 return LABEL_BASE_INDEX - 1 + abs($feed);
4158         }
4159
4160 ?>