include/functions.php

   1 <?php
   2         define('EXPECTED_CONFIG_VERSION', 26);
   3         define('SCHEMA_VERSION', 115);
   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         /**
  34          * Define a constant if not already defined
  35          *
  36          * @param string $name The constant name.
  37          * @param mixed $value The constant value.
  38          * @access public
  39          * @return boolean True if defined successfully or not.
  40          */
  41         function define_default($name, $value) {
  42                 defined($name) or define($name, $value);
  43         }
  44
  45         ///// Some defaults that you can override in config.php //////
  46
  47         define_default('FEED_FETCH_TIMEOUT', 45);
  48         // How may seconds to wait for response when requesting feed from a site
  49         define_default('FEED_FETCH_NO_CACHE_TIMEOUT', 15);
  50         // How may seconds to wait for response when requesting feed from a
  51         // site when that feed wasn't cached before
  52         define_default('FILE_FETCH_TIMEOUT', 45);
  53         // Default timeout when fetching files from remote sites
  54         define_default('FILE_FETCH_CONNECT_TIMEOUT', 15);
  55         // How many seconds to wait for initial response from website when
  56         // fetching files from remote sites
  57
  58         if (DB_TYPE == "pgsql") {
  59                 define('SUBSTRING_FOR_DATE', 'SUBSTRING_FOR_DATE');
  60         } else {
  61                 define('SUBSTRING_FOR_DATE', 'SUBSTRING');
  62         }
  63
  64         /**
  65          * Return available translations names.
  66          *
  67          * @access public
  68          * @return array A array of available translations.
  69          */
  70         function get_translations() {
  71                 $tr = array(
  72                                         "auto"  => "Detect automatically",
  73                                         "ca_CA" => "Català",
  74                                         "cs_CZ" => "Česky",
  75                                         "en_US" => "English",
  76                                         "es_ES" => "Español",
  77                                         "de_DE" => "Deutsch",
  78                                         "fr_FR" => "Français",
  79                                         "hu_HU" => "Magyar (Hungarian)",
  80                                         "it_IT" => "Italiano",
  81                                         "ja_JP" => "日本語 (Japanese)",
  82                                         "lv_LV" => "Latviešu",
  83                                         "nb_NO" => "Norwegian bokmål",
  84                                         "nl_NL" => "Dutch",
  85                                         "pl_PL" => "Polski",
  86                                         "ru_RU" => "Русский",
  87                                         "pt_BR" => "Portuguese/Brazil",
  88                                         "zh_CN" => "Simplified Chinese",
  89                                         "sv_SE" => "Svenska",
  90                                         "fi_FI" => "Suomi");
  91
  92                 return $tr;
  93         }
  94
  95         require_once "lib/accept-to-gettext.php";
  96         require_once "lib/gettext/gettext.inc";
  97
  98
  99         function startup_gettext() {
 100
 101                 # Get locale from Accept-Language header
 102                 $lang = al2gt(array_keys(get_translations()), "text/html");
 103
 104                 if (defined('_TRANSLATION_OVERRIDE_DEFAULT')) {
 105                         $lang = _TRANSLATION_OVERRIDE_DEFAULT;
 106                 }
 107
 108                 if ($_SESSION["language"] && $_SESSION["language"] != "auto") {
 109                         $lang = $_SESSION["language"];
 110                 }
 111
 112                 if ($lang) {
 113                         if (defined('LC_MESSAGES')) {
 114                                 _setlocale(LC_MESSAGES, $lang);
 115                         } else if (defined('LC_ALL')) {
 116                                 _setlocale(LC_ALL, $lang);
 117                         }
 118
 119                         _bindtextdomain("messages", "locale");
 120
 121                         _textdomain("messages");
 122                         _bind_textdomain_codeset("messages", "UTF-8");
 123                 }
 124         }
 125
 126         startup_gettext();
 127
 128         require_once 'db-prefs.php';
 129         require_once 'version.php';
 130         require_once 'ccache.php';
 131         require_once 'labels.php';
 132
 133         define('SELF_USER_AGENT', 'Tiny Tiny RSS/' . VERSION . ' (http://tt-rss.org/)');
 134         ini_set('user_agent', SELF_USER_AGENT);
 135
 136         require_once 'lib/pubsubhubbub/publisher.php';
 137
 138         $tz_offset = -1;
 139         $utc_tz = new DateTimeZone('UTC');
 140         $schema_version = false;
 141
 142         /**
 143          * Print a timestamped debug message.
 144          *
 145          * @param string $msg The debug message.
 146          * @return void
 147          */
 148         function _debug($msg) {
 149                 $ts = strftime("%H:%M:%S", time());
 150                 if (function_exists('posix_getpid')) {
 151                         $ts = "$ts/" . posix_getpid();
 152                 }
 153
 154                 if (!(defined('QUIET') && QUIET)) {
 155                         print "[$ts] $msg\n";
 156                 }
 157
 158                 if (defined('LOGFILE'))  {
 159                         $fp = fopen(LOGFILE, 'a+');
 160
 161                         if ($fp) {
 162                                 fputs($fp, "[$ts] $msg\n");
 163                                 fclose($fp);
 164                         }
 165                 }
 166
 167         } // function _debug
 168
 169         /**
 170          * Purge a feed old posts.
 171          *
 172          * @param mixed $link A database connection.
 173          * @param mixed $feed_id The id of the purged feed.
 174          * @param mixed $purge_interval Olderness of purged posts.
 175          * @param boolean $debug Set to True to enable the debug. False by default.
 176          * @access public
 177          * @return void
 178          */
 179         function purge_feed($link, $feed_id, $purge_interval, $debug = false) {
 180
 181                 if (!$purge_interval) $purge_interval = feed_purge_interval($link, $feed_id);
 182
 183                 $rows = -1;
 184
 185                 $result = db_query($link,
 186                         "SELECT owner_uid FROM ttrss_feeds WHERE id = '$feed_id'");
 187
 188                 $owner_uid = false;
 189
 190                 if (db_num_rows($result) == 1) {
 191                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 192                 }
 193
 194                 if ($purge_interval == -1 || !$purge_interval) {
 195                         if ($owner_uid) {
 196                                 ccache_update($link, $feed_id, $owner_uid);
 197                         }
 198                         return;
 199                 }
 200
 201                 if (!$owner_uid) return;
 202
 203                 if (FORCE_ARTICLE_PURGE == 0) {
 204                         $purge_unread = get_pref($link, "PURGE_UNREAD_ARTICLES",
 205                                 $owner_uid, false);
 206                 } else {
 207                         $purge_unread = true;
 208                         $purge_interval = FORCE_ARTICLE_PURGE;
 209                 }
 210
 211                 if (!$purge_unread) $query_limit = " unread = false AND ";
 212
 213                 if (DB_TYPE == "pgsql") {
 214                         $pg_version = get_pgsql_version($link);
 215
 216                         if (preg_match("/^7\./", $pg_version) || preg_match("/^8\.0/", $pg_version)) {
 217
 218                                 $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 219                                         ttrss_entries.id = ref_id AND
 220                                         marked = false AND
 221                                         feed_id = '$feed_id' AND
 222                                         $query_limit
 223                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 224
 225                         } else {
 226
 227                                 $result = db_query($link, "DELETE FROM ttrss_user_entries
 228                                         USING ttrss_entries
 229                                         WHERE ttrss_entries.id = ref_id AND
 230                                         marked = false AND
 231                                         feed_id = '$feed_id' AND
 232                                         $query_limit
 233                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 234                         }
 235
 236                         $rows = pg_affected_rows($result);
 237
 238                 } else {
 239
 240 /*                      $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 241                                 marked = false AND feed_id = '$feed_id' AND
 242                                 (SELECT date_updated FROM ttrss_entries WHERE
 243                                         id = ref_id) < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)"); */
 244
 245                         $result = db_query($link, "DELETE FROM ttrss_user_entries
 246                                 USING ttrss_user_entries, ttrss_entries
 247                                 WHERE ttrss_entries.id = ref_id AND
 248                                 marked = false AND
 249                                 feed_id = '$feed_id' AND
 250                                 $query_limit
 251                                 ttrss_entries.date_updated < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)");
 252
 253                         $rows = mysql_affected_rows($link);
 254
 255                 }
 256
 257                 ccache_update($link, $feed_id, $owner_uid);
 258
 259                 if ($debug) {
 260                         _debug("Purged feed $feed_id ($purge_interval): deleted $rows articles");
 261                 }
 262
 263                 return $rows;
 264         } // function purge_feed
 265
 266         function feed_purge_interval($link, $feed_id) {
 267
 268                 $result = db_query($link, "SELECT purge_interval, owner_uid FROM ttrss_feeds
 269                         WHERE id = '$feed_id'");
 270
 271                 if (db_num_rows($result) == 1) {
 272                         $purge_interval = db_fetch_result($result, 0, "purge_interval");
 273                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 274
 275                         if ($purge_interval == 0) $purge_interval = get_pref($link,
 276                                 'PURGE_OLD_DAYS', $owner_uid);
 277
 278                         return $purge_interval;
 279
 280                 } else {
 281                         return -1;
 282                 }
 283         }
 284
 285         function purge_orphans($link, $do_output = false) {
 286
 287                 // purge orphaned posts in main content table
 288                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
 289                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
 290
 291                 if ($do_output) {
 292                         $rows = db_affected_rows($link, $result);
 293                         _debug("Purged $rows orphaned posts.");
 294                 }
 295         }
 296
 297         function get_feed_update_interval($link, $feed_id) {
 298                 $result = db_query($link, "SELECT owner_uid, update_interval FROM
 299                         ttrss_feeds WHERE id = '$feed_id'");
 300
 301                 if (db_num_rows($result) == 1) {
 302                         $update_interval = db_fetch_result($result, 0, "update_interval");
 303                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 304
 305                         if ($update_interval != 0) {
 306                                 return $update_interval;
 307                         } else {
 308                                 return get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $owner_uid, false);
 309                         }
 310
 311                 } else {
 312                         return -1;
 313                 }
 314         }
 315
 316         function fetch_file_contents($url, $type = false, $login = false, $pass = false, $post_query = false, $timeout = false, $timestamp = 0) {
 317
 318                 global $fetch_last_error;
 319                 global $fetch_last_error_code;
 320
 321                 $url = str_replace(' ', '%20', $url);
 322
 323                 if (!defined('NO_CURL') && function_exists('curl_init') && !ini_get("open_basedir")) {
 324
 325                         if (ini_get("safe_mode")) {
 326                                 $ch = curl_init(geturl($url));
 327                         } else {
 328                                 $ch = curl_init($url);
 329                         }
 330
 331                         if ($timestamp) {
 332                                 curl_setopt($ch, CURLOPT_HTTPHEADER,
 333                                         array("If-Modified-Since: ".gmdate('D, d M Y H:i:s \G\M\T', $timestamp)));
 334                         }
 335
 336                         curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout ? $timeout : FILE_FETCH_CONNECT_TIMEOUT);
 337                         curl_setopt($ch, CURLOPT_TIMEOUT, $timeout ? $timeout : FILE_FETCH_TIMEOUT);
 338                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, !ini_get("safe_mode"));
 339                         curl_setopt($ch, CURLOPT_MAXREDIRS, 20);
 340                         curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
 341                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 342                         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 343                         curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 344                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 345                         curl_setopt($ch, CURLOPT_ENCODING , "gzip");
 346                         curl_setopt($ch, CURLOPT_REFERER, $url);
 347
 348                         if ($post_query) {
 349                                 curl_setopt($ch, CURLOPT_POST, true);
 350                                 curl_setopt($ch, CURLOPT_POSTFIELDS, $post_query);
 351                         }
 352
 353                         if ($login && $pass)
 354                                 curl_setopt($ch, CURLOPT_USERPWD, "$login:$pass");
 355
 356                         $contents = @curl_exec($ch);
 357
 358                         if (curl_errno($ch) === 23 || curl_errno($ch) === 61) {
 359                                 curl_setopt($ch, CURLOPT_ENCODING, 'none');
 360                                 $contents = @curl_exec($ch);
 361                         }
 362
 363                         if ($contents === false) {
 364                                 $fetch_last_error = curl_errno($ch) . " " . curl_error($ch);
 365                                 curl_close($ch);
 366                                 return false;
 367                         }
 368
 369                         $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 370                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 371
 372                         $fetch_last_error_code = $http_code;
 373
 374                         if ($http_code != 200 || $type && strpos($content_type, "$type") === false) {
 375                                 if (curl_errno($ch) != 0) {
 376                                         $fetch_last_error = curl_errno($ch) . " " . curl_error($ch);
 377                                 } else {
 378                                         $fetch_last_error = "HTTP Code: $http_code";
 379                                 }
 380                                 curl_close($ch);
 381                                 return false;
 382                         }
 383
 384                         curl_close($ch);
 385
 386                         return $contents;
 387                 } else {
 388                         if ($login && $pass){
 389                                 $url_parts = array();
 390
 391                                 preg_match("/(^[^:]*):\/\/(.*)/", $url, $url_parts);
 392
 393                                 $pass = urlencode($pass);
 394
 395                                 if ($url_parts[1] && $url_parts[2]) {
 396                                         $url = $url_parts[1] . "://$login:$pass@" . $url_parts[2];
 397                                 }
 398                         }
 399
 400                         $data = @file_get_contents($url);
 401
 402                         if (!$data && function_exists('error_get_last')) {
 403                                 $error = error_get_last();
 404                                 $fetch_last_error = $error["message"];
 405                         }
 406                         return $data;
 407                 }
 408
 409         }
 410
 411         /**
 412          * Try to determine the favicon URL for a feed.
 413          * adapted from wordpress favicon plugin by Jeff Minard (http://thecodepro.com/)
 414          * http://dev.wp-plugins.org/file/favatars/trunk/favatars.php
 415          *
 416          * @param string $url A feed or page URL
 417          * @access public
 418          * @return mixed The favicon URL, or false if none was found.
 419          */
 420         function get_favicon_url($url) {
 421
 422                 $favicon_url = false;
 423
 424                 if ($html = @fetch_file_contents($url)) {
 425
 426                         libxml_use_internal_errors(true);
 427
 428                         $doc = new DOMDocument();
 429                         $doc->loadHTML($html);
 430                         $xpath = new DOMXPath($doc);
 431
 432                         $base = $xpath->query('/html/head/base');
 433                         foreach ($base as $b) {
 434                                 $url = $b->getAttribute("href");
 435                                 break;
 436                         }
 437
 438                         $entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon"]');
 439                         if (count($entries) > 0) {
 440                                 foreach ($entries as $entry) {
 441                                         $favicon_url = rewrite_relative_url($url, $entry->getAttribute("href"));
 442                                         break;
 443                                 }
 444                         }
 445                 }
 446
 447                 if (!$favicon_url)
 448                         $favicon_url = rewrite_relative_url($url, "/favicon.ico");
 449
 450                 return $favicon_url;
 451         } // function get_favicon_url
 452
 453         function check_feed_favicon($site_url, $feed, $link) {
 454 #               print "FAVICON [$site_url]: $favicon_url\n";
 455
 456                 $icon_file = ICONS_DIR . "/$feed.ico";
 457
 458                 if (!file_exists($icon_file)) {
 459                         $favicon_url = get_favicon_url($site_url);
 460
 461                         if ($favicon_url) {
 462                                 // Limiting to "image" type misses those served with text/plain
 463                                 $contents = fetch_file_contents($favicon_url); // , "image");
 464
 465                                 if ($contents) {
 466                                         // Crude image type matching.
 467                                         // Patterns gleaned from the file(1) source code.
 468                                         if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
 469                                                 // 0       string  \000\000\001\000        MS Windows icon resource
 470                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
 471                                         }
 472                                         elseif (preg_match('/^GIF8/', $contents)) {
 473                                                 // 0       string          GIF8            GIF image data
 474                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
 475                                         }
 476                                         elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
 477                                                 // 0       string          \x89PNG\x0d\x0a\x1a\x0a         PNG image data
 478                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
 479                                         }
 480                                         elseif (preg_match('/^\xff\xd8/', $contents)) {
 481                                                 // 0       beshort         0xffd8          JPEG image data
 482                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
 483                                         }
 484                                         else {
 485                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
 486                                                 $contents = "";
 487                                         }
 488                                 }
 489
 490                                 if ($contents) {
 491                                         $fp = @fopen($icon_file, "w");
 492
 493                                         if ($fp) {
 494                                                 fwrite($fp, $contents);
 495                                                 fclose($fp);
 496                                                 chmod($icon_file, 0644);
 497                                         }
 498                                 }
 499                         }
 500                 }
 501         }
 502
 503         function print_select($id, $default, $values, $attributes = "") {
 504                 print "<select name=\"$id\" id=\"$id\" $attributes>";
 505                 foreach ($values as $v) {
 506                         if ($v == $default)
 507                                 $sel = "selected=\"1\"";
 508                          else
 509                                 $sel = "";
 510
 511                         $v = trim($v);
 512
 513                         print "<option value=\"$v\" $sel>$v</option>";
 514                 }
 515                 print "</select>";
 516         }
 517
 518         function print_select_hash($id, $default, $values, $attributes = "") {
 519                 print "<select name=\"$id\" id='$id' $attributes>";
 520                 foreach (array_keys($values) as $v) {
 521                         if ($v == $default)
 522                                 $sel = 'selected="selected"';
 523                          else
 524                                 $sel = "";
 525
 526                         $v = trim($v);
 527
 528                         print "<option $sel value=\"$v\">".$values[$v]."</option>";
 529                 }
 530
 531                 print "</select>";
 532         }
 533
 534         function print_radio($id, $default, $true_is, $values, $attributes = "") {
 535                 foreach ($values as $v) {
 536
 537                         if ($v == $default)
 538                                 $sel = "checked";
 539                          else
 540                                 $sel = "";
 541
 542                         if ($v == $true_is) {
 543                                 $sel .= " value=\"1\"";
 544                         } else {
 545                                 $sel .= " value=\"0\"";
 546                         }
 547
 548                         print "<input class=\"noborder\" dojoType=\"dijit.form.RadioButton\"
 549                                 type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 550
 551                 }
 552         }
 553
 554         function initialize_user_prefs($link, $uid, $profile = false) {
 555
 556                 $uid = db_escape_string($link, $uid);
 557
 558                 if (!$profile) {
 559                         $profile = "NULL";
 560                         $profile_qpart = "AND profile IS NULL";
 561                 } else {
 562                         $profile_qpart = "AND profile = '$profile'";
 563                 }
 564
 565                 if (get_schema_version($link) < 63) $profile_qpart = "";
 566
 567                 db_query($link, "BEGIN");
 568
 569                 $result = db_query($link, "SELECT pref_name,def_value FROM ttrss_prefs");
 570
 571                 $u_result = db_query($link, "SELECT pref_name
 572                         FROM ttrss_user_prefs WHERE owner_uid = '$uid' $profile_qpart");
 573
 574                 $active_prefs = array();
 575
 576                 while ($line = db_fetch_assoc($u_result)) {
 577                         array_push($active_prefs, $line["pref_name"]);
 578                 }
 579
 580                 while ($line = db_fetch_assoc($result)) {
 581                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 582 //                              print "adding " . $line["pref_name"] . "<br>";
 583
 584                                 $line["def_value"] = db_escape_string($link, $line["def_value"]);
 585                                 $line["pref_name"] = db_escape_string($link, $line["pref_name"]);
 586
 587                                 if (get_schema_version($link) < 63) {
 588                                         db_query($link, "INSERT INTO ttrss_user_prefs
 589                                                 (owner_uid,pref_name,value) VALUES
 590                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 591
 592                                 } else {
 593                                         db_query($link, "INSERT INTO ttrss_user_prefs
 594                                                 (owner_uid,pref_name,value, profile) VALUES
 595                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."', $profile)");
 596                                 }
 597
 598                         }
 599                 }
 600
 601                 db_query($link, "COMMIT");
 602
 603         }
 604
 605         function get_ssl_certificate_id() {
 606                 if ($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"]) {
 607                         return sha1($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"] .
 608                                 $_SERVER["REDIRECT_SSL_CLIENT_V_START"] .
 609                                 $_SERVER["REDIRECT_SSL_CLIENT_V_END"] .
 610                                 $_SERVER["REDIRECT_SSL_CLIENT_S_DN"]);
 611                 }
 612                 return "";
 613         }
 614
 615         function authenticate_user($link, $login, $password, $check_only = false) {
 616
 617                 if (!SINGLE_USER_MODE) {
 618                         $user_id = false;
 619
 620                         global $pluginhost;
 621                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_AUTH_USER) as $plugin) {
 622
 623                                 $user_id = (int) $plugin->authenticate($login, $password);
 624
 625                                 if ($user_id) {
 626                                         $_SESSION["auth_module"] = strtolower(get_class($plugin));
 627                                         break;
 628                                 }
 629                         }
 630
 631                         if ($user_id && !$check_only) {
 632                                 @session_start();
 633
 634                                 $_SESSION["uid"] = $user_id;
 635                                 $_SESSION["version"] = VERSION;
 636
 637                                 $result = db_query($link, "SELECT login,access_level,pwd_hash FROM ttrss_users
 638                                         WHERE id = '$user_id'");
 639
 640                                 $_SESSION["name"] = db_fetch_result($result, 0, "login");
 641                                 $_SESSION["access_level"] = db_fetch_result($result, 0, "access_level");
 642                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 643
 644                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 645                                         $_SESSION["uid"]);
 646
 647                                 $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 648                                 $_SESSION["user_agent"] = sha1($_SERVER['HTTP_USER_AGENT']);
 649                                 $_SESSION["pwd_hash"] = db_fetch_result($result, 0, "pwd_hash");
 650
 651                                 $_SESSION["last_version_check"] = time();
 652
 653                                 initialize_user_prefs($link, $_SESSION["uid"]);
 654
 655                                 return true;
 656                         }
 657
 658                         return false;
 659
 660                 } else {
 661
 662                         $_SESSION["uid"] = 1;
 663                         $_SESSION["name"] = "admin";
 664                         $_SESSION["access_level"] = 10;
 665
 666                         $_SESSION["hide_hello"] = true;
 667                         $_SESSION["hide_logout"] = true;
 668
 669                         $_SESSION["auth_module"] = false;
 670
 671                         if (!$_SESSION["csrf_token"]) {
 672                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 673                         }
 674
 675                         $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 676
 677                         initialize_user_prefs($link, $_SESSION["uid"]);
 678
 679                         return true;
 680                 }
 681         }
 682
 683         function make_password($length = 8) {
 684
 685                 $password = "";
 686                 $possible = "0123456789abcdfghjkmnpqrstvwxyzABCDFGHJKMNPQRSTVWXYZ";
 687
 688         $i = 0;
 689
 690                 while ($i < $length) {
 691                         $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 692
 693                         if (!strstr($password, $char)) {
 694                                 $password .= $char;
 695                                 $i++;
 696                         }
 697                 }
 698                 return $password;
 699         }
 700
 701         // this is called after user is created to initialize default feeds, labels
 702         // or whatever else
 703
 704         // user preferences are checked on every login, not here
 705
 706         function initialize_user($link, $uid) {
 707
 708                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 709                         values ('$uid', 'Tiny Tiny RSS: New Releases',
 710                         'http://tt-rss.org/releases.rss')");
 711
 712                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 713                         values ('$uid', 'Tiny Tiny RSS: Forum',
 714                                 'http://tt-rss.org/forum/rss.php')");
 715         }
 716
 717         function logout_user() {
 718                 session_destroy();
 719                 if (isset($_COOKIE[session_name()])) {
 720                    setcookie(session_name(), '', time()-42000, '/');
 721                 }
 722         }
 723
 724         function validate_csrf($csrf_token) {
 725                 return $csrf_token == $_SESSION['csrf_token'];
 726         }
 727
 728         function load_user_plugins($link, $owner_uid) {
 729                 if ($owner_uid) {
 730                         $plugins = get_pref($link, "_ENABLED_PLUGINS", $owner_uid);
 731
 732                         global $pluginhost;
 733                         $pluginhost->load($plugins, $pluginhost::KIND_USER, $owner_uid);
 734
 735                         if (get_schema_version($link) > 100) {
 736                                 $pluginhost->load_data();
 737                         }
 738                 }
 739         }
 740
 741         function login_sequence($link) {
 742                 $_SESSION["prefs_cache"] = false;
 743
 744                 if (SINGLE_USER_MODE) {
 745                         @session_start();
 746                         authenticate_user($link, "admin", null);
 747                         cache_prefs($link);
 748                         load_user_plugins($link, $_SESSION["uid"]);
 749                 } else {
 750                         if (!validate_session($link)) $_SESSION["uid"] = false;
 751
 752                         if (!$_SESSION["uid"]) {
 753
 754                                 if (AUTH_AUTO_LOGIN && authenticate_user($link, null, null)) {
 755                                     $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 756                                 } else {
 757                                          authenticate_user($link, null, null, true);
 758                                 }
 759
 760                                 if (!$_SESSION["uid"]) {
 761                                         @session_destroy();
 762                                         setcookie(session_name(), '', time()-42000, '/');
 763
 764                                         render_login_form($link);
 765                                         exit;
 766                                 }
 767
 768                         } else {
 769                                 /* bump login timestamp */
 770                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 771                                         $_SESSION["uid"]);
 772                                 $_SESSION["last_login_update"] = time();
 773                         }
 774
 775                         if ($_SESSION["uid"] && $_SESSION["language"] && SESSION_COOKIE_LIFETIME > 0) {
 776                                 setcookie("ttrss_lang", $_SESSION["language"],
 777                                         time() + SESSION_COOKIE_LIFETIME);
 778                         }
 779
 780                         if ($_SESSION["uid"]) {
 781                                 cache_prefs($link);
 782                                 load_user_plugins($link, $_SESSION["uid"]);
 783
 784                                 /* cleanup ccache */
 785
 786                                 db_query($link, "DELETE FROM ttrss_counters_cache WHERE owner_uid = ".
 787                                         $_SESSION["uid"] . " AND
 788                                                 (SELECT COUNT(id) FROM ttrss_feeds WHERE
 789                                                         ttrss_feeds.id = feed_id) = 0");
 790
 791                                 db_query($link, "DELETE FROM ttrss_cat_counters_cache WHERE owner_uid = ".
 792                                         $_SESSION["uid"] . " AND
 793                                                 (SELECT COUNT(id) FROM ttrss_feed_categories WHERE
 794                                                         ttrss_feed_categories.id = feed_id) = 0");
 795
 796                         }
 797
 798                 }
 799         }
 800
 801         function truncate_string($str, $max_len, $suffix = '&hellip;') {
 802                 if (mb_strlen($str, "utf-8") > $max_len - 3) {
 803                         return mb_substr($str, 0, $max_len, "utf-8") . $suffix;
 804                 } else {
 805                         return $str;
 806                 }
 807         }
 808
 809         function convert_timestamp($timestamp, $source_tz, $dest_tz) {
 810
 811                 try {
 812                         $source_tz = new DateTimeZone($source_tz);
 813                 } catch (Exception $e) {
 814                         $source_tz = new DateTimeZone('UTC');
 815                 }
 816
 817                 try {
 818                         $dest_tz = new DateTimeZone($dest_tz);
 819                 } catch (Exception $e) {
 820                         $dest_tz = new DateTimeZone('UTC');
 821                 }
 822
 823                 $dt = new DateTime(date('Y-m-d H:i:s', $timestamp), $source_tz);
 824                 return $dt->format('U') + $dest_tz->getOffset($dt);
 825         }
 826
 827         function make_local_datetime($link, $timestamp, $long, $owner_uid = false,
 828                                         $no_smart_dt = false) {
 829
 830                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 831                 if (!$timestamp) $timestamp = '1970-01-01 0:00';
 832
 833                 global $utc_tz;
 834                 global $tz_offset;
 835
 836                 # We store date in UTC internally
 837                 $dt = new DateTime($timestamp, $utc_tz);
 838
 839                 if ($tz_offset == -1) {
 840
 841                         $user_tz_string = get_pref($link, 'USER_TIMEZONE', $owner_uid);
 842
 843                         try {
 844                                 $user_tz = new DateTimeZone($user_tz_string);
 845                         } catch (Exception $e) {
 846                                 $user_tz = $utc_tz;
 847                         }
 848
 849                         $tz_offset = $user_tz->getOffset($dt);
 850                 }
 851
 852                 $user_timestamp = $dt->format('U') + $tz_offset;
 853
 854                 if (!$no_smart_dt) {
 855                         return smart_date_time($link, $user_timestamp,
 856                                 $tz_offset, $owner_uid);
 857                 } else {
 858                         if ($long)
 859                                 $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 860                         else
 861                                 $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 862
 863                         return date($format, $user_timestamp);
 864                 }
 865         }
 866
 867         function smart_date_time($link, $timestamp, $tz_offset = 0, $owner_uid = false) {
 868                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 869
 870                 if (date("Y.m.d", $timestamp) == date("Y.m.d", time() + $tz_offset)) {
 871                         return date("G:i", $timestamp);
 872                 } else if (date("Y", $timestamp) == date("Y", time() + $tz_offset)) {
 873                         $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 874                         return date($format, $timestamp);
 875                 } else {
 876                         $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 877                         return date($format, $timestamp);
 878                 }
 879         }
 880
 881         function sql_bool_to_bool($s) {
 882                 if ($s == "t" || $s == "1" || strtolower($s) == "true") {
 883                         return true;
 884                 } else {
 885                         return false;
 886                 }
 887         }
 888
 889         function bool_to_sql_bool($s) {
 890                 if ($s) {
 891                         return "true";
 892                 } else {
 893                         return "false";
 894                 }
 895         }
 896
 897         // Session caching removed due to causing wrong redirects to upgrade
 898         // script when get_schema_version() is called on an obsolete session
 899         // created on a previous schema version.
 900         function get_schema_version($link, $nocache = false) {
 901                 global $schema_version;
 902
 903                 if (!$schema_version) {
 904                         $result = db_query($link, "SELECT schema_version FROM ttrss_version");
 905                         $version = db_fetch_result($result, 0, "schema_version");
 906                         $schema_version = $version;
 907                         return $version;
 908                 } else {
 909                         return $schema_version;
 910                 }
 911         }
 912
 913         function sanity_check($link) {
 914                 require_once 'errors.php';
 915
 916                 $error_code = 0;
 917                 $schema_version = get_schema_version($link, true);
 918
 919                 if ($schema_version != SCHEMA_VERSION) {
 920                         $error_code = 5;
 921                 }
 922
 923                 if (DB_TYPE == "mysql") {
 924                         $result = db_query($link, "SELECT true", false);
 925                         if (db_num_rows($result) != 1) {
 926                                 $error_code = 10;
 927                         }
 928                 }
 929
 930                 if (db_escape_string($link, "testTEST") != "testTEST") {
 931                         $error_code = 12;
 932                 }
 933
 934                 return array("code" => $error_code, "message" => $ERRORS[$error_code]);
 935         }
 936
 937         function file_is_locked($filename) {
 938                 if (function_exists('flock')) {
 939                         $fp = @fopen(LOCK_DIRECTORY . "/$filename", "r");
 940                         if ($fp) {
 941                                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 942                                         flock($fp, LOCK_UN);
 943                                         fclose($fp);
 944                                         return false;
 945                                 }
 946                                 fclose($fp);
 947                                 return true;
 948                         } else {
 949                                 return false;
 950                         }
 951                 }
 952                 return true; // consider the file always locked and skip the test
 953         }
 954
 955         function make_lockfile($filename) {
 956                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
 957
 958                 if ($fp && flock($fp, LOCK_EX | LOCK_NB)) {
 959                         if (function_exists('posix_getpid')) {
 960                                 fwrite($fp, posix_getpid() . "\n");
 961                         }
 962                         return $fp;
 963                 } else {
 964                         return false;
 965                 }
 966         }
 967
 968         function make_stampfile($filename) {
 969                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
 970
 971                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 972                         fwrite($fp, time() . "\n");
 973                         flock($fp, LOCK_UN);
 974                         fclose($fp);
 975                         return true;
 976                 } else {
 977                         return false;
 978                 }
 979         }
 980
 981         function sql_random_function() {
 982                 if (DB_TYPE == "mysql") {
 983                         return "RAND()";
 984                 } else {
 985                         return "RANDOM()";
 986                 }
 987         }
 988
 989         function catchup_feed($link, $feed, $cat_view, $owner_uid = false, $max_id = false, $mode = 'all') {
 990
 991                         if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 992
 993                         //if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
 994
 995                         // Todo: all this interval stuff needs some generic generator function
 996
 997                         $date_qpart = "false";
 998
 999                         switch ($mode) {
1000                         case "1day":
1001                                 if (DB_TYPE == "pgsql") {
1002                                         $date_qpart = "date_entered < NOW() - INTERVAL '1 day' ";
1003                                 } else {
1004                                         $date_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 1 DAY) ";
1005                                 }
1006                                 break;
1007                         case "1week":
1008                                 if (DB_TYPE == "pgsql") {
1009                                         $date_qpart = "date_entered < NOW() - INTERVAL '1 week' ";
1010                                 } else {
1011                                         $date_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 1 WEEK) ";
1012                                 }
1013                                 break;
1014                         case "2weeks":
1015                                 if (DB_TYPE == "pgsql") {
1016                                         $date_qpart = "date_entered < NOW() - INTERVAL '2 week' ";
1017                                 } else {
1018                                         $date_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 2 WEEK) ";
1019                                 }
1020                                 break;
1021                         default:
1022                                 $date_qpart = "true";
1023                         }
1024
1025                         if (is_numeric($feed)) {
1026                                 if ($cat_view) {
1027
1028                                         if ($feed >= 0) {
1029
1030                                                 if ($feed > 0) {
1031                                                         $children = getChildCategories($link, $feed, $owner_uid);
1032                                                         array_push($children, $feed);
1033
1034                                                         $children = join(",", $children);
1035
1036                                                         $cat_qpart = "cat_id IN ($children)";
1037                                                 } else {
1038                                                         $cat_qpart = "cat_id IS NULL";
1039                                                 }
1040
1041                                                 db_query($link, "UPDATE ttrss_user_entries
1042                                                         SET unread = false, last_read = NOW() WHERE ref_id IN
1043                                                                 (SELECT id FROM
1044                                                                         (SELECT id FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id
1045                                                                                 AND owner_uid = $owner_uid AND unread = true AND feed_id IN
1046                                                                                         (SELECT id FROM ttrss_feeds WHERE $cat_qpart) AND $date_qpart) as tmp)");
1047
1048                                         } else if ($feed == -2) {
1049
1050                                                 db_query($link, "UPDATE ttrss_user_entries
1051                                                         SET unread = false,last_read = NOW() WHERE (SELECT COUNT(*)
1052                                                                 FROM ttrss_user_labels2 WHERE article_id = ref_id) > 0
1053                                                                 AND unread = true AND $date_qpart AND owner_uid = $owner_uid");
1054                                         }
1055
1056                                 } else if ($feed > 0) {
1057
1058                                         db_query($link, "UPDATE ttrss_user_entries
1059                                                 SET unread = false, last_read = NOW() WHERE ref_id IN
1060                                                         (SELECT id FROM
1061                                                                 (SELECT id FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id
1062                                                                         AND owner_uid = $owner_uid AND unread = true AND feed_id = $feed AND $date_qpart) as tmp)");
1063
1064                                 } else if ($feed < 0 && $feed > LABEL_BASE_INDEX) { // special, like starred
1065
1066                                         if ($feed == -1) {
1067                                                 db_query($link, "UPDATE ttrss_user_entries
1068                                                         SET unread = false, last_read = NOW() WHERE ref_id IN
1069                                                                 (SELECT id FROM
1070                                                                         (SELECT id FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id
1071                                                                                 AND owner_uid = $owner_uid AND unread = true AND marked = true AND $date_qpart) as tmp)");
1072                                         }
1073
1074                                         if ($feed == -2) {
1075                                                 db_query($link, "UPDATE ttrss_user_entries
1076                                                         SET unread = false, last_read = NOW() WHERE ref_id IN
1077                                                                 (SELECT id FROM
1078                                                                         (SELECT id FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id
1079                                                                                 AND owner_uid = $owner_uid AND unread = true AND published = true AND $date_qpart) as tmp)");
1080                                         }
1081
1082                                         if ($feed == -3) {
1083
1084                                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE");
1085
1086                                                 if (DB_TYPE == "pgsql") {
1087                                                         $match_part = "date_entered > NOW() - INTERVAL '$intl hour' ";
1088                                                 } else {
1089                                                         $match_part = "date_entered > DATE_SUB(NOW(),
1090                                                                 INTERVAL $intl HOUR) ";
1091                                                 }
1092
1093                                                 db_query($link, "UPDATE ttrss_user_entries
1094                                                         SET unread = false, last_read = NOW() WHERE ref_id IN
1095                                                                 (SELECT id FROM
1096                                                                         (SELECT id FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id
1097                                                                                 AND owner_uid = $owner_uid AND unread = true AND $date_qpart AND $match_part) as tmp)");
1098                                         }
1099
1100                                         if ($feed == -4) {
1101                                                 db_query($link, "UPDATE ttrss_user_entries
1102                                                         SET unread = false, last_read = NOW() WHERE ref_id IN
1103                                                                 (SELECT id FROM
1104                                                                         (SELECT id FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id
1105                                                                                 AND owner_uid = $owner_uid AND unread = true AND $date_qpart) as tmp)");
1106                                         }
1107
1108                                 } else if ($feed < LABEL_BASE_INDEX) { // label
1109
1110                                         $label_id = feed_to_label_id($feed);
1111
1112                                         db_query($link, "UPDATE ttrss_user_entries
1113                                                 SET unread = false, last_read = NOW() WHERE ref_id IN
1114                                                         (SELECT id FROM
1115                                                                 (SELECT ttrss_entries.id FROM ttrss_entries, ttrss_user_entries, ttrss_user_labels2 WHERE ref_id = id
1116                                                                         AND label_id = '$label_id' AND ref_id = article_id
1117                                                                         AND owner_uid = $owner_uid AND unread = true AND $date_qpart) as tmp)");
1118
1119                                 }
1120
1121                                 ccache_update($link, $feed, $owner_uid, $cat_view);
1122
1123                         } else { // tag
1124                                 db_query($link, "UPDATE ttrss_user_entries
1125                                         SET unread = false, last_read = NOW() WHERE ref_id IN
1126                                                 (SELECT id FROM
1127                                                         (SELECT ttrss_entries.id FROM ttrss_entries, ttrss_user_entries, ttrss_tags WHERE ref_id = ttrss_entries.id
1128                                                                 AND post_int_id = int_id AND tag_name = '$feed'
1129                                                                 AND ttrss_user_entries.owner_uid = $owner_uid AND unread = true AND $date_qpart) as tmp)");
1130
1131                         }
1132         }
1133
1134         function getAllCounters($link) {
1135                 $data = getGlobalCounters($link);
1136
1137                 $data = array_merge($data, getVirtCounters($link));
1138                 $data = array_merge($data, getLabelCounters($link));
1139                 $data = array_merge($data, getFeedCounters($link, $active_feed));
1140                 $data = array_merge($data, getCategoryCounters($link));
1141
1142                 return $data;
1143         }
1144
1145         function getCategoryTitle($link, $cat_id) {
1146
1147                 if ($cat_id == -1) {
1148                         return __("Special");
1149                 } else if ($cat_id == -2) {
1150                         return __("Labels");
1151                 } else {
1152
1153                         $result = db_query($link, "SELECT title FROM ttrss_feed_categories WHERE
1154                                 id = '$cat_id'");
1155
1156                         if (db_num_rows($result) == 1) {
1157                                 return db_fetch_result($result, 0, "title");
1158                         } else {
1159                                 return __("Uncategorized");
1160                         }
1161                 }
1162         }
1163
1164
1165         function getCategoryCounters($link) {
1166                 $ret_arr = array();
1167
1168                 /* Labels category */
1169
1170                 $cv = array("id" => -2, "kind" => "cat",
1171                         "counter" => getCategoryUnread($link, -2));
1172
1173                 array_push($ret_arr, $cv);
1174
1175                 $result = db_query($link, "SELECT id AS cat_id, value AS unread,
1176                         (SELECT COUNT(id) FROM ttrss_feed_categories AS c2
1177                                 WHERE c2.parent_cat = ttrss_feed_categories.id) AS num_children
1178                         FROM ttrss_feed_categories, ttrss_cat_counters_cache
1179                         WHERE ttrss_cat_counters_cache.feed_id = id AND
1180                         ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid AND
1181                         ttrss_feed_categories.owner_uid = " . $_SESSION["uid"]);
1182
1183                 while ($line = db_fetch_assoc($result)) {
1184                         $line["cat_id"] = (int) $line["cat_id"];
1185
1186                         if ($line["num_children"] > 0) {
1187                                 $child_counter = getCategoryChildrenUnread($link, $line["cat_id"], $_SESSION["uid"]);
1188                         } else {
1189                                 $child_counter = 0;
1190                         }
1191
1192                         $cv = array("id" => $line["cat_id"], "kind" => "cat",
1193                                 "counter" => $line["unread"] + $child_counter);
1194
1195                         array_push($ret_arr, $cv);
1196                 }
1197
1198                 /* Special case: NULL category doesn't actually exist in the DB */
1199
1200                 $cv = array("id" => 0, "kind" => "cat",
1201                         "counter" => (int) ccache_find($link, 0, $_SESSION["uid"], true));
1202
1203                 array_push($ret_arr, $cv);
1204
1205                 return $ret_arr;
1206         }
1207
1208         // only accepts real cats (>= 0)
1209         function getCategoryChildrenUnread($link, $cat, $owner_uid = false) {
1210                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1211
1212                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories WHERE parent_cat = '$cat'
1213                                 AND owner_uid = $owner_uid");
1214
1215                 $unread = 0;
1216
1217                 while ($line = db_fetch_assoc($result)) {
1218                         $unread += getCategoryUnread($link, $line["id"], $owner_uid);
1219                         $unread += getCategoryChildrenUnread($link, $line["id"], $owner_uid);
1220                 }
1221
1222                 return $unread;
1223         }
1224
1225         function getCategoryUnread($link, $cat, $owner_uid = false) {
1226
1227                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1228
1229                 if ($cat >= 0) {
1230
1231                         if ($cat != 0) {
1232                                 $cat_query = "cat_id = '$cat'";
1233                         } else {
1234                                 $cat_query = "cat_id IS NULL";
1235                         }
1236
1237                         $result = db_query($link, "SELECT id FROM ttrss_feeds WHERE $cat_query
1238                                         AND owner_uid = " . $owner_uid);
1239
1240                         $cat_feeds = array();
1241                         while ($line = db_fetch_assoc($result)) {
1242                                 array_push($cat_feeds, "feed_id = " . $line["id"]);
1243                         }
1244
1245                         if (count($cat_feeds) == 0) return 0;
1246
1247                         $match_part = implode(" OR ", $cat_feeds);
1248
1249                         $result = db_query($link, "SELECT COUNT(int_id) AS unread
1250                                 FROM ttrss_user_entries
1251                                 WHERE   unread = true AND ($match_part)
1252                                 AND owner_uid = " . $owner_uid);
1253
1254                         $unread = 0;
1255
1256                         # this needs to be rewritten
1257                         while ($line = db_fetch_assoc($result)) {
1258                                 $unread += $line["unread"];
1259                         }
1260
1261                         return $unread;
1262                 } else if ($cat == -1) {
1263                         return getFeedUnread($link, -1) + getFeedUnread($link, -2) + getFeedUnread($link, -3) + getFeedUnread($link, 0);
1264                 } else if ($cat == -2) {
1265
1266                         $result = db_query($link, "
1267                                 SELECT COUNT(unread) AS unread FROM
1268                                         ttrss_user_entries, ttrss_user_labels2
1269                                 WHERE article_id = ref_id AND unread = true
1270                                         AND ttrss_user_entries.owner_uid = '$owner_uid'");
1271
1272                         $unread = db_fetch_result($result, 0, "unread");
1273
1274                         return $unread;
1275
1276                 }
1277         }
1278
1279         function getFeedUnread($link, $feed, $is_cat = false) {
1280                 return getFeedArticles($link, $feed, $is_cat, true, $_SESSION["uid"]);
1281         }
1282
1283         function getLabelUnread($link, $label_id, $owner_uid = false) {
1284                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1285
1286                 $result = db_query($link, "SELECT COUNT(ref_id) AS unread FROM ttrss_user_entries, ttrss_user_labels2
1287                         WHERE owner_uid = '$owner_uid' AND unread = true AND label_id = '$label_id' AND article_id = ref_id");
1288
1289                 if (db_num_rows($result) != 0) {
1290                         return db_fetch_result($result, 0, "unread");
1291                 } else {
1292                         return 0;
1293                 }
1294         }
1295
1296         function getFeedArticles($link, $feed, $is_cat = false, $unread_only = false,
1297                 $owner_uid = false) {
1298
1299                 $n_feed = (int) $feed;
1300                 $need_entries = false;
1301
1302                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1303
1304                 if ($unread_only) {
1305                         $unread_qpart = "unread = true";
1306                 } else {
1307                         $unread_qpart = "true";
1308                 }
1309
1310                 if ($is_cat) {
1311                         return getCategoryUnread($link, $n_feed, $owner_uid);
1312                 } else if ($n_feed == -6) {
1313                         return 0;
1314                 } else if ($feed != "0" && $n_feed == 0) {
1315
1316                         $feed = db_escape_string($link, $feed);
1317
1318                         $result = db_query($link, "SELECT SUM((SELECT COUNT(int_id)
1319                                 FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1320                                         AND ref_id = id AND $unread_qpart)) AS count FROM ttrss_tags
1321                                 WHERE owner_uid = $owner_uid AND tag_name = '$feed'");
1322                         return db_fetch_result($result, 0, "count");
1323
1324                 } else if ($n_feed == -1) {
1325                         $match_part = "marked = true";
1326                 } else if ($n_feed == -2) {
1327                         $match_part = "published = true";
1328                 } else if ($n_feed == -3) {
1329                         $match_part = "unread = true AND score >= 0";
1330
1331                         $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
1332
1333                         if (DB_TYPE == "pgsql") {
1334                                 $match_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
1335                         } else {
1336                                 $match_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
1337                         }
1338
1339                         $need_entries = true;
1340
1341                 } else if ($n_feed == -4) {
1342                         $match_part = "true";
1343                 } else if ($n_feed >= 0) {
1344
1345                         if ($n_feed != 0) {
1346                                 $match_part = "feed_id = '$n_feed'";
1347                         } else {
1348                                 $match_part = "feed_id IS NULL";
1349                         }
1350
1351                 } else if ($feed < LABEL_BASE_INDEX) {
1352
1353                         $label_id = feed_to_label_id($feed);
1354
1355                         return getLabelUnread($link, $label_id, $owner_uid);
1356
1357                 }
1358
1359                 if ($match_part) {
1360
1361                         if ($need_entries) {
1362                                 $from_qpart = "ttrss_user_entries,ttrss_entries";
1363                                 $from_where = "ttrss_entries.id = ttrss_user_entries.ref_id AND";
1364                         } else {
1365                                 $from_qpart = "ttrss_user_entries";
1366                         }
1367
1368                         $query = "SELECT count(int_id) AS unread
1369                                 FROM $from_qpart WHERE
1370                                 $unread_qpart AND $from_where ($match_part) AND ttrss_user_entries.owner_uid = $owner_uid";
1371
1372                         //echo "[$feed/$query]\n";
1373
1374                         $result = db_query($link, $query);
1375
1376                 } else {
1377
1378                         $result = db_query($link, "SELECT COUNT(post_int_id) AS unread
1379                                 FROM ttrss_tags,ttrss_user_entries,ttrss_entries
1380                                 WHERE tag_name = '$feed' AND post_int_id = int_id AND ref_id = ttrss_entries.id
1381                                 AND $unread_qpart AND ttrss_tags.owner_uid = " . $owner_uid);
1382                 }
1383
1384                 $unread = db_fetch_result($result, 0, "unread");
1385
1386                 return $unread;
1387         }
1388
1389         function getGlobalUnread($link, $user_id = false) {
1390
1391                 if (!$user_id) {
1392                         $user_id = $_SESSION["uid"];
1393                 }
1394
1395                 $result = db_query($link, "SELECT SUM(value) AS c_id FROM ttrss_counters_cache
1396                         WHERE owner_uid = '$user_id' AND feed_id > 0");
1397
1398                 $c_id = db_fetch_result($result, 0, "c_id");
1399
1400                 return $c_id;
1401         }
1402
1403         function getGlobalCounters($link, $global_unread = -1) {
1404                 $ret_arr = array();
1405
1406                 if ($global_unread == -1) {
1407                         $global_unread = getGlobalUnread($link);
1408                 }
1409
1410                 $cv = array("id" => "global-unread",
1411                         "counter" => (int) $global_unread);
1412
1413                 array_push($ret_arr, $cv);
1414
1415                 $result = db_query($link, "SELECT COUNT(id) AS fn FROM
1416                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1417
1418                 $subscribed_feeds = db_fetch_result($result, 0, "fn");
1419
1420                 $cv = array("id" => "subscribed-feeds",
1421                         "counter" => (int) $subscribed_feeds);
1422
1423                 array_push($ret_arr, $cv);
1424
1425                 return $ret_arr;
1426         }
1427
1428         function getVirtCounters($link) {
1429
1430                 $ret_arr = array();
1431
1432                 for ($i = 0; $i >= -4; $i--) {
1433
1434                         $count = getFeedUnread($link, $i);
1435
1436                         $cv = array("id" => $i,
1437                                 "counter" => (int) $count);
1438
1439 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1440 //                              $cv["xmsg"] = getFeedArticles($link, $i)." ".__("total");
1441
1442                         array_push($ret_arr, $cv);
1443                 }
1444
1445                 global $pluginhost;
1446
1447                 if ($pluginhost) {
1448                         $feeds = $pluginhost->get_feeds(-1);
1449
1450                         if (is_array($feeds)) {
1451                                 foreach ($feeds as $feed) {
1452                                         $cv = array("id" => PluginHost::pfeed_to_feed_id($feed['id']),
1453                                                 "counter" => $feed['sender']->get_unread($feed['id']));
1454
1455                                         array_push($ret_arr, $cv);
1456                                 }
1457                         }
1458                 }
1459
1460                 return $ret_arr;
1461         }
1462
1463         function getLabelCounters($link, $descriptions = false) {
1464
1465                 $ret_arr = array();
1466
1467                 $owner_uid = $_SESSION["uid"];
1468
1469                 $result = db_query($link, "SELECT id,caption,COUNT(unread) AS unread
1470                         FROM ttrss_labels2 LEFT JOIN ttrss_user_labels2 ON
1471                                 (ttrss_labels2.id = label_id)
1472                                 LEFT JOIN ttrss_user_entries ON (ref_id = article_id AND unread = true
1473                                         AND ttrss_user_entries.owner_uid = $owner_uid)
1474                                 WHERE ttrss_labels2.owner_uid = $owner_uid GROUP BY ttrss_labels2.id,
1475                                         ttrss_labels2.caption");
1476
1477                 while ($line = db_fetch_assoc($result)) {
1478
1479                         $id = label_to_feed_id($line["id"]);
1480
1481                         $label_name = $line["caption"];
1482                         $count = $line["unread"];
1483
1484                         $cv = array("id" => $id,
1485                                 "counter" => (int) $count);
1486
1487                         if ($descriptions)
1488                                 $cv["description"] = $label_name;
1489
1490 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1491 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1492
1493                         array_push($ret_arr, $cv);
1494                 }
1495
1496                 return $ret_arr;
1497         }
1498
1499         function getFeedCounters($link, $active_feed = false) {
1500
1501                 $ret_arr = array();
1502
1503                 $query = "SELECT ttrss_feeds.id,
1504                                 ttrss_feeds.title,
1505                                 ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
1506                                 last_error, value AS count
1507                         FROM ttrss_feeds, ttrss_counters_cache
1508                         WHERE ttrss_feeds.owner_uid = ".$_SESSION["uid"]."
1509                                 AND ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid
1510                                 AND ttrss_counters_cache.feed_id = id";
1511
1512                 $result = db_query($link, $query);
1513                 $fctrs_modified = false;
1514
1515                 while ($line = db_fetch_assoc($result)) {
1516
1517                         $id = $line["id"];
1518                         $count = $line["count"];
1519                         $last_error = htmlspecialchars($line["last_error"]);
1520
1521                         $last_updated = make_local_datetime($link, $line['last_updated'], false);
1522
1523                         $has_img = feed_has_icon($id);
1524
1525                         if (date('Y') - date('Y', strtotime($line['last_updated'])) > 2)
1526                                 $last_updated = '';
1527
1528                         $cv = array("id" => $id,
1529                                 "updated" => $last_updated,
1530                                 "counter" => (int) $count,
1531                                 "has_img" => (int) $has_img);
1532
1533                         if ($last_error)
1534                                 $cv["error"] = $last_error;
1535
1536 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1537 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1538
1539                         if ($active_feed && $id == $active_feed)
1540                                 $cv["title"] = truncate_string($line["title"], 30);
1541
1542                         array_push($ret_arr, $cv);
1543
1544                 }
1545
1546                 return $ret_arr;
1547         }
1548
1549         function get_pgsql_version($link) {
1550                 $result = db_query($link, "SELECT version() AS version");
1551                 $version = explode(" ", db_fetch_result($result, 0, "version"));
1552                 return $version[1];
1553         }
1554
1555         /**
1556          * @return array (code => Status code, message => error message if available)
1557          *
1558          *                 0 - OK, Feed already exists
1559          *                 1 - OK, Feed added
1560          *                 2 - Invalid URL
1561          *                 3 - URL content is HTML, no feeds available
1562          *                 4 - URL content is HTML which contains multiple feeds.
1563          *                     Here you should call extractfeedurls in rpc-backend
1564          *                     to get all possible feeds.
1565          *                 5 - Couldn't download the URL content.
1566          */
1567         function subscribe_to_feed($link, $url, $cat_id = 0,
1568                         $auth_login = '', $auth_pass = '') {
1569
1570                 global $fetch_last_error;
1571
1572                 require_once "include/rssfuncs.php";
1573
1574                 $url = fix_url($url);
1575
1576                 if (!$url || !validate_feed_url($url)) return array("code" => 2);
1577
1578                 $contents = @fetch_file_contents($url, false, $auth_login, $auth_pass);
1579
1580                 if (!$contents) {
1581                         return array("code" => 5, "message" => $fetch_last_error);
1582                 }
1583
1584                 if (is_html($contents)) {
1585                         $feedUrls = get_feeds_from_html($url, $contents);
1586
1587                         if (count($feedUrls) == 0) {
1588                                 return array("code" => 3);
1589                         } else if (count($feedUrls) > 1) {
1590                                 return array("code" => 4, "feeds" => $feedUrls);
1591                         }
1592                         //use feed url as new URL
1593                         $url = key($feedUrls);
1594                 }
1595
1596                 if ($cat_id == "0" || !$cat_id) {
1597                         $cat_qpart = "NULL";
1598                 } else {
1599                         $cat_qpart = "'$cat_id'";
1600                 }
1601
1602                 $result = db_query($link,
1603                         "SELECT id FROM ttrss_feeds
1604                         WHERE feed_url = '$url' AND owner_uid = ".$_SESSION["uid"]);
1605
1606                 if (db_num_rows($result) == 0) {
1607                         $result = db_query($link,
1608                                 "INSERT INTO ttrss_feeds
1609                                         (owner_uid,feed_url,title,cat_id, auth_login,auth_pass,update_method)
1610                                 VALUES ('".$_SESSION["uid"]."', '$url',
1611                                 '[Unknown]', $cat_qpart, '$auth_login', '$auth_pass', 0)");
1612
1613                         $result = db_query($link,
1614                                 "SELECT id FROM ttrss_feeds WHERE feed_url = '$url'
1615                                         AND owner_uid = " . $_SESSION["uid"]);
1616
1617                         $feed_id = db_fetch_result($result, 0, "id");
1618
1619                         if ($feed_id) {
1620                                 update_rss_feed($link, $feed_id, true);
1621                         }
1622
1623                         return array("code" => 1);
1624                 } else {
1625                         return array("code" => 0);
1626                 }
1627         }
1628
1629         function print_feed_select($link, $id, $default_id = "",
1630                 $attributes = "", $include_all_feeds = true,
1631                 $root_id = false, $nest_level = 0) {
1632
1633                 if (!$root_id) {
1634                         print "<select id=\"$id\" name=\"$id\" $attributes>";
1635                         if ($include_all_feeds) {
1636                                 $is_selected = ("0" == $default_id) ? "selected=\"1\"" : "";
1637                                 print "<option $is_selected value=\"0\">".__('All feeds')."</option>";
1638                         }
1639                 }
1640
1641                 if (get_pref($link, 'ENABLE_FEED_CATS')) {
1642
1643                         if ($root_id)
1644                                 $parent_qpart = "parent_cat = '$root_id'";
1645                         else
1646                                 $parent_qpart = "parent_cat IS NULL";
1647
1648                         $result = db_query($link, "SELECT id,title,
1649                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1650                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1651                                 FROM ttrss_feed_categories
1652                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1653
1654                         while ($line = db_fetch_assoc($result)) {
1655
1656                                 for ($i = 0; $i < $nest_level; $i++)
1657                                         $line["title"] = " - " . $line["title"];
1658
1659                                 $is_selected = ("CAT:".$line["id"] == $default_id) ? "selected=\"1\"" : "";
1660
1661                                 printf("<option $is_selected value='CAT:%d'>%s</option>",
1662                                         $line["id"], htmlspecialchars($line["title"]));
1663
1664                                 if ($line["num_children"] > 0)
1665                                         print_feed_select($link, $id, $default_id, $attributes,
1666                                                 $include_all_feeds, $line["id"], $nest_level+1);
1667
1668                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1669                                         WHERE cat_id = '".$line["id"]."' AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1670
1671                                 while ($fline = db_fetch_assoc($feed_result)) {
1672                                         $is_selected = ($fline["id"] == $default_id) ? "selected=\"1\"" : "";
1673
1674                                         $fline["title"] = " + " . $fline["title"];
1675
1676                                         for ($i = 0; $i < $nest_level; $i++)
1677                                                 $fline["title"] = " - " . $fline["title"];
1678
1679                                         printf("<option $is_selected value='%d'>%s</option>",
1680                                                 $fline["id"], htmlspecialchars($fline["title"]));
1681                                 }
1682                         }
1683
1684                         if (!$root_id) {
1685                                 $is_selected = ($default_id == "CAT:0") ? "selected=\"1\"" : "";
1686
1687                                 printf("<option $is_selected value='CAT:0'>%s</option>",
1688                                         __("Uncategorized"));
1689
1690                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1691                                         WHERE cat_id IS NULL AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1692
1693                                 while ($fline = db_fetch_assoc($feed_result)) {
1694                                         $is_selected = ($fline["id"] == $default_id && !$default_is_cat) ? "selected=\"1\"" : "";
1695
1696                                         $fline["title"] = " + " . $fline["title"];
1697
1698                                         for ($i = 0; $i < $nest_level; $i++)
1699                                                 $fline["title"] = " - " . $fline["title"];
1700
1701                                         printf("<option $is_selected value='%d'>%s</option>",
1702                                                 $fline["id"], htmlspecialchars($fline["title"]));
1703                                 }
1704                         }
1705
1706                 } else {
1707                         $result = db_query($link, "SELECT id,title FROM ttrss_feeds
1708                                 WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
1709
1710                         while ($line = db_fetch_assoc($result)) {
1711
1712                                 $is_selected = ($line["id"] == $default_id) ? "selected=\"1\"" : "";
1713
1714                                 printf("<option $is_selected value='%d'>%s</option>",
1715                                         $line["id"], htmlspecialchars($line["title"]));
1716                         }
1717                 }
1718
1719                 if (!$root_id) {
1720                         print "</select>";
1721                 }
1722         }
1723
1724         function print_feed_cat_select($link, $id, $default_id,
1725                 $attributes, $include_all_cats = true, $root_id = false, $nest_level = 0) {
1726
1727                         if (!$root_id) {
1728                                         print "<select id=\"$id\" name=\"$id\" default=\"$default_id\" onchange=\"catSelectOnChange(this)\" $attributes>";
1729                         }
1730
1731                         if ($root_id)
1732                                 $parent_qpart = "parent_cat = '$root_id'";
1733                         else
1734                                 $parent_qpart = "parent_cat IS NULL";
1735
1736                         $result = db_query($link, "SELECT id,title,
1737                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1738                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1739                                 FROM ttrss_feed_categories
1740                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1741
1742                         while ($line = db_fetch_assoc($result)) {
1743                                 if ($line["id"] == $default_id) {
1744                                         $is_selected = "selected=\"1\"";
1745                                 } else {
1746                                         $is_selected = "";
1747                                 }
1748
1749                                 for ($i = 0; $i < $nest_level; $i++)
1750                                         $line["title"] = " - " . $line["title"];
1751
1752                                 if ($line["title"])
1753                                         printf("<option $is_selected value='%d'>%s</option>",
1754                                                 $line["id"], htmlspecialchars($line["title"]));
1755
1756                                 if ($line["num_children"] > 0)
1757                                         print_feed_cat_select($link, $id, $default_id, $attributes,
1758                                                 $include_all_cats, $line["id"], $nest_level+1);
1759                         }
1760
1761                         if (!$root_id) {
1762                                 if ($include_all_cats) {
1763                                         if (db_num_rows($result) > 0) {
1764                                                 print "<option disabled=\"1\">--------</option>";
1765                                         }
1766
1767                                         if ($default_id == 0) {
1768                                                 $is_selected = "selected=\"1\"";
1769                                         } else {
1770                                                 $is_selected = "";
1771                                         }
1772
1773                                         print "<option $is_selected value=\"0\">".__('Uncategorized')."</option>";
1774                                 }
1775                                 print "</select>";
1776                         }
1777                 }
1778
1779         function checkbox_to_sql_bool($val) {
1780                 return ($val == "on") ? "true" : "false";
1781         }
1782
1783         function getFeedCatTitle($link, $id) {
1784                 if ($id == -1) {
1785                         return __("Special");
1786                 } else if ($id < LABEL_BASE_INDEX) {
1787                         return __("Labels");
1788                 } else if ($id > 0) {
1789                         $result = db_query($link, "SELECT ttrss_feed_categories.title
1790                                 FROM ttrss_feeds, ttrss_feed_categories WHERE ttrss_feeds.id = '$id' AND
1791                                         cat_id = ttrss_feed_categories.id");
1792                         if (db_num_rows($result) == 1) {
1793                                 return db_fetch_result($result, 0, "title");
1794                         } else {
1795                                 return __("Uncategorized");
1796                         }
1797                 } else {
1798                         return "getFeedCatTitle($id) failed";
1799                 }
1800
1801         }
1802
1803         function getFeedIcon($id) {
1804                 switch ($id) {
1805                 case 0:
1806                         return "images/archive.png";
1807                         break;
1808                 case -1:
1809                         return "images/mark_set.svg";
1810                         break;
1811                 case -2:
1812                         return "images/pub_set.svg";
1813                         break;
1814                 case -3:
1815                         return "images/fresh.png";
1816                         break;
1817                 case -4:
1818                         return "images/tag.png";
1819                         break;
1820                 case -6:
1821                         return "images/recently_read.png";
1822                         break;
1823                 default:
1824                         if ($id < LABEL_BASE_INDEX) {
1825                                 return "images/label.png";
1826                         } else {
1827                                 if (file_exists(ICONS_DIR . "/$id.ico"))
1828                                         return ICONS_URL . "/$id.ico";
1829                         }
1830                         break;
1831                 }
1832         }
1833
1834         function getFeedTitle($link, $id, $cat = false) {
1835                 if ($cat) {
1836                         return getCategoryTitle($link, $id);
1837                 } else if ($id == -1) {
1838                         return __("Starred articles");
1839                 } else if ($id == -2) {
1840                         return __("Published articles");
1841                 } else if ($id == -3) {
1842                         return __("Fresh articles");
1843                 } else if ($id == -4) {
1844                         return __("All articles");
1845                 } else if ($id === 0 || $id === "0") {
1846                         return __("Archived articles");
1847                 } else if ($id == -6) {
1848                         return __("Recently read");
1849                 } else if ($id < LABEL_BASE_INDEX) {
1850                         $label_id = feed_to_label_id($id);
1851                         $result = db_query($link, "SELECT caption FROM ttrss_labels2 WHERE id = '$label_id'");
1852                         if (db_num_rows($result) == 1) {
1853                                 return db_fetch_result($result, 0, "caption");
1854                         } else {
1855                                 return "Unknown label ($label_id)";
1856                         }
1857
1858                 } else if (is_numeric($id) && $id > 0) {
1859                         $result = db_query($link, "SELECT title FROM ttrss_feeds WHERE id = '$id'");
1860                         if (db_num_rows($result) == 1) {
1861                                 return db_fetch_result($result, 0, "title");
1862                         } else {
1863                                 return "Unknown feed ($id)";
1864                         }
1865                 } else {
1866                         return $id;
1867                 }
1868         }
1869
1870         function make_init_params($link) {
1871                 $params = array();
1872
1873                 foreach (array("ON_CATCHUP_SHOW_NEXT_FEED", "HIDE_READ_FEEDS",
1874                         "ENABLE_FEED_CATS", "FEEDS_SORT_BY_UNREAD", "CONFIRM_FEED_CATCHUP",
1875                         "CDM_AUTO_CATCHUP", "FRESH_ARTICLE_MAX_AGE",
1876                         "HIDE_READ_SHOWS_SPECIAL", "COMBINED_DISPLAY_MODE") as $param) {
1877
1878                                  $params[strtolower($param)] = (int) get_pref($link, $param);
1879                  }
1880
1881                 $params["icons_url"] = ICONS_URL;
1882                 $params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
1883                 $params["default_view_mode"] = get_pref($link, "_DEFAULT_VIEW_MODE");
1884                 $params["default_view_limit"] = (int) get_pref($link, "_DEFAULT_VIEW_LIMIT");
1885                 $params["default_view_order_by"] = get_pref($link, "_DEFAULT_VIEW_ORDER_BY");
1886                 $params["bw_limit"] = (int) $_SESSION["bw_limit"];
1887                 $params["label_base_index"] = (int) LABEL_BASE_INDEX;
1888
1889                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
1890                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1891
1892                 $max_feed_id = db_fetch_result($result, 0, "mid");
1893                 $num_feeds = db_fetch_result($result, 0, "nf");
1894
1895                 $params["max_feed_id"] = (int) $max_feed_id;
1896                 $params["num_feeds"] = (int) $num_feeds;
1897
1898                 $params["collapsed_feedlist"] = (int) get_pref($link, "_COLLAPSED_FEEDLIST");
1899                 $params["hotkeys"] = get_hotkeys_map($link);
1900
1901                 $params["csrf_token"] = $_SESSION["csrf_token"];
1902                 $params["widescreen"] = (int) $_COOKIE["ttrss_widescreen"];
1903
1904                 $params['simple_update'] = defined('SIMPLE_UPDATE_MODE') && SIMPLE_UPDATE_MODE;
1905
1906                 return $params;
1907         }
1908
1909         function get_hotkeys_info($link) {
1910                 $hotkeys = array(
1911                         __("Navigation") => array(
1912                                 "next_feed" => __("Open next feed"),
1913                                 "prev_feed" => __("Open previous feed"),
1914                                 "next_article" => __("Open next article"),
1915                                 "prev_article" => __("Open previous article"),
1916                                 "next_article_noscroll" => __("Open next article (don't scroll long articles)"),
1917                                 "prev_article_noscroll" => __("Open previous article (don't scroll long articles)"),
1918                                 "next_article_noexpand" => __("Move to next article (don't expand or mark read)"),
1919                                 "prev_article_noexpand" => __("Move to previous article (don't expand or mark read)"),
1920                                 "search_dialog" => __("Show search dialog")),
1921                         __("Article") => array(
1922                                 "toggle_mark" => __("Toggle starred"),
1923                                 "toggle_publ" => __("Toggle published"),
1924                                 "toggle_unread" => __("Toggle unread"),
1925                                 "edit_tags" => __("Edit tags"),
1926                                 "dismiss_selected" => __("Dismiss selected"),
1927                                 "dismiss_read" => __("Dismiss read"),
1928                                 "open_in_new_window" => __("Open in new window"),
1929                                 "catchup_below" => __("Mark below as read"),
1930                                 "catchup_above" => __("Mark above as read"),
1931                                 "article_scroll_down" => __("Scroll down"),
1932                                 "article_scroll_up" => __("Scroll up"),
1933                                 "select_article_cursor" => __("Select article under cursor"),
1934                                 "email_article" => __("Email article"),
1935                                 "close_article" => __("Close/collapse article"),
1936                                 "toggle_expand" => __("Toggle article expansion (combined mode)"),
1937                                 "toggle_widescreen" => __("Toggle widescreen mode"),
1938                                 "toggle_embed_original" => __("Toggle embed original")),
1939                         __("Article selection") => array(
1940                                 "select_all" => __("Select all articles"),
1941                                 "select_unread" => __("Select unread"),
1942                                 "select_marked" => __("Select starred"),
1943                                 "select_published" => __("Select published"),
1944                                 "select_invert" => __("Invert selection"),
1945                                 "select_none" => __("Deselect everything")),
1946                         __("Feed") => array(
1947                                 "feed_refresh" => __("Refresh current feed"),
1948                                 "feed_unhide_read" => __("Un/hide read feeds"),
1949                                 "feed_subscribe" => __("Subscribe to feed"),
1950                                 "feed_edit" => __("Edit feed"),
1951                                 "feed_catchup" => __("Mark as read"),
1952                                 "feed_reverse" => __("Reverse headlines"),
1953                                 "feed_debug_update" => __("Debug feed update"),
1954                                 "catchup_all" => __("Mark all feeds as read"),
1955                                 "cat_toggle_collapse" => __("Un/collapse current category"),
1956                                 "toggle_combined_mode" => __("Toggle combined mode"),
1957                                 "toggle_cdm_expanded" => __("Toggle auto expand in combined mode")),
1958                         __("Go to") => array(
1959                                 "goto_all" => __("All articles"),
1960                                 "goto_fresh" => __("Fresh"),
1961                                 "goto_marked" => __("Starred"),
1962                                 "goto_published" => __("Published"),
1963                                 "goto_tagcloud" => __("Tag cloud"),
1964                                 "goto_prefs" => __("Preferences")),
1965                         __("Other") => array(
1966                                 "create_label" => __("Create label"),
1967                                 "create_filter" => __("Create filter"),
1968                                 "collapse_sidebar" => __("Un/collapse sidebar"),
1969                                 "help_dialog" => __("Show help dialog"))
1970                         );
1971
1972                 global $pluginhost;
1973                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_HOTKEY_INFO) as $plugin) {
1974                         $hotkeys = $plugin->hook_hotkey_info($hotkeys);
1975                 }
1976
1977                 return $hotkeys;
1978         }
1979
1980         function get_hotkeys_map($link) {
1981                 $hotkeys = array(
1982 //                      "navigation" => array(
1983                                 "k" => "next_feed",
1984                                 "j" => "prev_feed",
1985                                 "n" => "next_article",
1986                                 "p" => "prev_article",
1987                                 "(38)|up" => "prev_article",
1988                                 "(40)|down" => "next_article",
1989 //                              "^(38)|Ctrl-up" => "prev_article_noscroll",
1990 //                              "^(40)|Ctrl-down" => "next_article_noscroll",
1991                                 "(191)|/" => "search_dialog",
1992 //                      "article" => array(
1993                                 "s" => "toggle_mark",
1994                                 "*s" => "toggle_publ",
1995                                 "u" => "toggle_unread",
1996                                 "*t" => "edit_tags",
1997                                 "*d" => "dismiss_selected",
1998                                 "*x" => "dismiss_read",
1999                                 "o" => "open_in_new_window",
2000                                 "c p" => "catchup_below",
2001                                 "c n" => "catchup_above",
2002                                 "*n" => "article_scroll_down",
2003                                 "*p" => "article_scroll_up",
2004                                 "*(38)|Shift+up" => "article_scroll_up",
2005                                 "*(40)|Shift+down" => "article_scroll_down",
2006                                 "a *w" => "toggle_widescreen",
2007                                 "a e" => "toggle_embed_original",
2008                                 "e" => "email_article",
2009                                 "a q" => "close_article",
2010 //                      "article_selection" => array(
2011                                 "a a" => "select_all",
2012                                 "a u" => "select_unread",
2013                                 "a *u" => "select_marked",
2014                                 "a p" => "select_published",
2015                                 "a i" => "select_invert",
2016                                 "a n" => "select_none",
2017 //                      "feed" => array(
2018                                 "f r" => "feed_refresh",
2019                                 "f a" => "feed_unhide_read",
2020                                 "f s" => "feed_subscribe",
2021                                 "f e" => "feed_edit",
2022                                 "f q" => "feed_catchup",
2023                                 "f x" => "feed_reverse",
2024                                 "f *d" => "feed_debug_update",
2025                                 "f *c" => "toggle_combined_mode",
2026                                 "f c" => "toggle_cdm_expanded",
2027                                 "*q" => "catchup_all",
2028                                 "x" => "cat_toggle_collapse",
2029 //                      "goto" => array(
2030                                 "g a" => "goto_all",
2031                                 "g f" => "goto_fresh",
2032                                 "g s" => "goto_marked",
2033                                 "g p" => "goto_published",
2034                                 "g t" => "goto_tagcloud",
2035                                 "g *p" => "goto_prefs",
2036 //                      "other" => array(
2037                                 "(9)|Tab" => "select_article_cursor", // tab
2038                                 "c l" => "create_label",
2039                                 "c f" => "create_filter",
2040                                 "c s" => "collapse_sidebar",
2041                                 "^(191)|Ctrl+/" => "help_dialog",
2042                         );
2043
2044                 if (get_pref($link, 'COMBINED_DISPLAY_MODE')) {
2045                         $hotkeys["^(38)|Ctrl-up"] = "prev_article_noscroll";
2046                         $hotkeys["^(40)|Ctrl-down"] = "next_article_noscroll";
2047                 }
2048
2049                 global $pluginhost;
2050                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_HOTKEY_MAP) as $plugin) {
2051                         $hotkeys = $plugin->hook_hotkey_map($hotkeys);
2052                 }
2053
2054                 $prefixes = array();
2055
2056                 foreach (array_keys($hotkeys) as $hotkey) {
2057                         $pair = explode(" ", $hotkey, 2);
2058
2059                         if (count($pair) > 1 && !in_array($pair[0], $prefixes)) {
2060                                 array_push($prefixes, $pair[0]);
2061                         }
2062                 }
2063
2064                 return array($prefixes, $hotkeys);
2065         }
2066
2067         function make_runtime_info($link) {
2068                 $data = array();
2069
2070                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2071                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2072
2073                 $max_feed_id = db_fetch_result($result, 0, "mid");
2074                 $num_feeds = db_fetch_result($result, 0, "nf");
2075
2076                 $data["max_feed_id"] = (int) $max_feed_id;
2077                 $data["num_feeds"] = (int) $num_feeds;
2078
2079                 $data['last_article_id'] = getLastArticleId($link);
2080                 $data['cdm_expanded'] = get_pref($link, 'CDM_EXPANDED');
2081
2082                 $data['dep_ts'] = calculate_dep_timestamp();
2083                 $data['reload_on_ts_change'] = !defined('_NO_RELOAD_ON_TS_CHANGE');
2084
2085                 if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
2086
2087                         $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
2088
2089                         if (time() - $_SESSION["daemon_stamp_check"] > 30) {
2090
2091                                 $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
2092
2093                                 if ($stamp) {
2094                                         $stamp_delta = time() - $stamp;
2095
2096                                         if ($stamp_delta > 1800) {
2097                                                 $stamp_check = 0;
2098                                         } else {
2099                                                 $stamp_check = 1;
2100                                                 $_SESSION["daemon_stamp_check"] = time();
2101                                         }
2102
2103                                         $data['daemon_stamp_ok'] = $stamp_check;
2104
2105                                         $stamp_fmt = date("Y.m.d, G:i", $stamp);
2106
2107                                         $data['daemon_stamp'] = $stamp_fmt;
2108                                 }
2109                         }
2110                 }
2111
2112                 if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
2113                                 $new_version_details = @check_for_update($link);
2114
2115                                 $data['new_version_available'] = (int) ($new_version_details != false);
2116
2117                                 $_SESSION["last_version_check"] = time();
2118                                 $_SESSION["version_data"] = $new_version_details;
2119                 }
2120
2121                 return $data;
2122         }
2123
2124         function search_to_sql($link, $search) {
2125
2126                 $search_query_part = "";
2127
2128                 $keywords = explode(" ", $search);
2129                 $query_keywords = array();
2130
2131                 foreach ($keywords as $k) {
2132                         if (strpos($k, "-") === 0) {
2133                                 $k = substr($k, 1);
2134                                 $not = "NOT";
2135                         } else {
2136                                 $not = "";
2137                         }
2138
2139                         $commandpair = explode(":", mb_strtolower($k), 2);
2140
2141                         switch ($commandpair[0]) {
2142                         case "title":
2143                                 if ($commandpair[1]) {
2144                                         array_push($query_keywords, "($not (LOWER(ttrss_entries.title) LIKE '%".
2145                                                 db_escape_string($link, mb_strtolower($commandpair[1]))."%'))");
2146                                 }
2147                                 break;
2148                         case "author":
2149                                 if ($commandpair[1]) {
2150                                         array_push($query_keywords, "($not (LOWER(author) LIKE '%".
2151                                                 db_escape_string($link, mb_strtolower($commandpair[1]))."%'))");
2152                                 }
2153                                 break;
2154                         case "note":
2155                                 if ($commandpair[1]) {
2156                                         if ($commandpair[1] == "true")
2157                                                 array_push($query_keywords, "($not (note IS NOT NULL AND note != ''))");
2158                                         else if ($commandpair[1] == "false")
2159                                                 array_push($query_keywords, "($not (note IS NULL OR note = ''))");
2160                                         else
2161                                                 array_push($query_keywords, "($not (LOWER(note) LIKE '%".
2162                                                         db_escape_string($link, mb_strtolower($commandpair[1]))."%'))");
2163                                 }
2164                                 break;
2165                         case "star":
2166
2167                                 if ($commandpair[1]) {
2168                                         if ($commandpair[1] == "true")
2169                                                 array_push($query_keywords, "($not (marked = true))");
2170                                         else
2171                                                 array_push($query_keywords, "($not (marked = false))");
2172                                 }
2173                                 break;
2174                         case "pub":
2175                                 if ($commandpair[1]) {
2176                                         if ($commandpair[1] == "true")
2177                                                 array_push($query_keywords, "($not (published = true))");
2178                                         else
2179                                                 array_push($query_keywords, "($not (published = false))");
2180
2181                                 }
2182                                 break;
2183                         default:
2184                                 if (strpos($k, "@") === 0) {
2185
2186                                         $user_tz_string = get_pref($link, 'USER_TIMEZONE', $_SESSION['uid']);
2187                                         $orig_ts = strtotime(substr($k, 1));
2188                                         $k = date("Y-m-d", convert_timestamp($orig_ts, $user_tz_string, 'UTC'));
2189
2190                                         //$k = date("Y-m-d", strtotime(substr($k, 1)));
2191
2192                                         array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
2193                                 } else {
2194                                         array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2195                                                         OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2196                                 }
2197                         }
2198                 }
2199
2200                 $search_query_part = implode("AND", $query_keywords);
2201
2202                 return $search_query_part;
2203         }
2204
2205         function getParentCategories($link, $cat, $owner_uid) {
2206                 $rv = array();
2207
2208                 $result = db_query($link, "SELECT parent_cat FROM ttrss_feed_categories
2209                         WHERE id = '$cat' AND parent_cat IS NOT NULL AND owner_uid = $owner_uid");
2210
2211                 while ($line = db_fetch_assoc($result)) {
2212                         array_push($rv, $line["parent_cat"]);
2213                         $rv = array_merge($rv, getParentCategories($link, $line["parent_cat"], $owner_uid));
2214                 }
2215
2216                 return $rv;
2217         }
2218
2219         function getChildCategories($link, $cat, $owner_uid) {
2220                 $rv = array();
2221
2222                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories
2223                         WHERE parent_cat = '$cat' AND owner_uid = $owner_uid");
2224
2225                 while ($line = db_fetch_assoc($result)) {
2226                         array_push($rv, $line["id"]);
2227                         $rv = array_merge($rv, getChildCategories($link, $line["id"], $owner_uid));
2228                 }
2229
2230                 return $rv;
2231         }
2232
2233         function queryFeedHeadlines($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, $ignore_vfeed_group = false) {
2234
2235                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2236
2237                 $ext_tables_part = "";
2238
2239                         if ($search) {
2240
2241                                 if (SPHINX_ENABLED) {
2242                                         $ids = join(",", @sphinx_search($search, 0, 500));
2243
2244                                         if ($ids)
2245                                                 $search_query_part = "ref_id IN ($ids) AND ";
2246                                         else
2247                                                 $search_query_part = "ref_id = -1 AND ";
2248
2249                                 } else {
2250                                         $search_query_part = search_to_sql($link, $search);
2251                                         $search_query_part .= " AND ";
2252                                 }
2253
2254                         } else {
2255                                 $search_query_part = "";
2256                         }
2257
2258                         if ($filter) {
2259
2260                                 if (DB_TYPE == "pgsql") {
2261                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '14 days' ";
2262                                 } else {
2263                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL 14 DAY) ";
2264                                 }
2265
2266                                 $override_order = "updated DESC";
2267
2268                                 $filter_query_part = filter_to_sql($link, $filter, $owner_uid);
2269
2270                                 // Try to check if SQL regexp implementation chokes on a valid regexp
2271                                 $result = db_query($link, "SELECT true AS true_val FROM ttrss_entries,
2272                                         ttrss_user_entries, ttrss_feeds, ttrss_feed_categories
2273                                         WHERE $filter_query_part LIMIT 1", false);
2274
2275                                 if ($result) {
2276                                         $test = db_fetch_result($result, 0, "true_val");
2277
2278                                         if (!$test) {
2279                                                 $filter_query_part = "false AND";
2280                                         } else {
2281                                                 $filter_query_part .= " AND";
2282                                         }
2283                                 } else {
2284                                         $filter_query_part = "false AND";
2285                                 }
2286
2287                         } else {
2288                                 $filter_query_part = "";
2289                         }
2290
2291                         if ($since_id) {
2292                                 $since_id_part = "ttrss_entries.id > $since_id AND ";
2293                         } else {
2294                                 $since_id_part = "";
2295                         }
2296
2297                         $view_query_part = "";
2298
2299                         if ($view_mode == "adaptive") {
2300                                 if ($search) {
2301                                         $view_query_part = " ";
2302                                 } else if ($feed != -1) {
2303
2304                                         $unread = getFeedUnread($link, $feed, $cat_view);
2305
2306                                         if ($cat_view && $feed > 0 && $include_children)
2307                                                 $unread += getCategoryChildrenUnread($link, $feed);
2308
2309                                         if ($unread > 0)
2310                                 $view_query_part = " unread = true AND ";
2311
2312                                 }
2313                         }
2314
2315                         if ($view_mode == "marked") {
2316                                 $view_query_part = " marked = true AND ";
2317                         }
2318
2319                         if ($view_mode == "has_note") {
2320                                 $view_query_part = " (note IS NOT NULL AND note != '') AND ";
2321                         }
2322
2323                         if ($view_mode == "published") {
2324                                 $view_query_part = " published = true AND ";
2325                         }
2326
2327                         if ($view_mode == "unread" && $feed != -6) {
2328                                 $view_query_part = " unread = true AND ";
2329                         }
2330
2331                         if ($limit > 0) {
2332                                 $limit_query_part = "LIMIT " . $limit;
2333                         }
2334
2335                         $allow_archived = false;
2336
2337                         $vfeed_query_part = "";
2338
2339                         // override query strategy and enable feed display when searching globally
2340                         if ($search && $search_mode == "all_feeds") {
2341                                 $query_strategy_part = "true";
2342                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2343                         /* tags */
2344                         } else if (!is_numeric($feed)) {
2345                                 $query_strategy_part = "true";
2346                                 $vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
2347                                         id = feed_id) as feed_title,";
2348                         } else if ($search && $search_mode == "this_cat") {
2349                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2350
2351                                 if ($feed > 0) {
2352                                         if ($include_children) {
2353                                                 $subcats = getChildCategories($link, $feed, $owner_uid);
2354                                                 array_push($subcats, $feed);
2355                                                 $cats_qpart = join(",", $subcats);
2356                                         } else {
2357                                                 $cats_qpart = $feed;
2358                                         }
2359
2360                                         $query_strategy_part = "ttrss_feeds.cat_id IN ($cats_qpart)";
2361
2362                                 } else {
2363                                         $query_strategy_part = "ttrss_feeds.cat_id IS NULL";
2364                                 }
2365
2366                         } else if ($feed > 0) {
2367
2368                                 if ($cat_view) {
2369
2370                                         if ($feed > 0) {
2371                                                 if ($include_children) {
2372                                                         # sub-cats
2373                                                         $subcats = getChildCategories($link, $feed, $owner_uid);
2374
2375                                                         array_push($subcats, $feed);
2376                                                         $query_strategy_part = "cat_id IN (".
2377                                                                         implode(",", $subcats).")";
2378
2379                                                 } else {
2380                                                         $query_strategy_part = "cat_id = '$feed'";
2381                                                 }
2382
2383                                         } else {
2384                                                 $query_strategy_part = "cat_id IS NULL";
2385                                         }
2386
2387                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2388
2389                                 } else {
2390                                         $query_strategy_part = "feed_id = '$feed'";
2391                                 }
2392                         } else if ($feed == 0 && !$cat_view) { // archive virtual feed
2393                                 $query_strategy_part = "feed_id IS NULL";
2394                                 $allow_archived = true;
2395                         } else if ($feed == 0 && $cat_view) { // uncategorized
2396                                 $query_strategy_part = "cat_id IS NULL AND feed_id IS NOT NULL";
2397                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2398                         } else if ($feed == -1) { // starred virtual feed
2399                                 $query_strategy_part = "marked = true";
2400                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2401                                 $allow_archived = true;
2402
2403                                 if (!$override_order) {
2404                                         $override_order = "last_marked DESC, date_entered DESC, updated DESC";
2405                                 }
2406
2407                         } else if ($feed == -2) { // published virtual feed OR labels category
2408
2409                                 if (!$cat_view) {
2410                                         $query_strategy_part = "published = true";
2411                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2412                                         $allow_archived = true;
2413
2414                                         if (!$override_order) {
2415                                                 $override_order = "last_published DESC, date_entered DESC, updated DESC";
2416                                         }
2417
2418                                 } else {
2419                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2420
2421                                         $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2422
2423                                         $query_strategy_part = "ttrss_labels2.id = ttrss_user_labels2.label_id AND
2424                                                 ttrss_user_labels2.article_id = ref_id";
2425
2426                                 }
2427                         } else if ($feed == -6) { // recently read
2428                                 $query_strategy_part = "unread = false AND last_read IS NOT NULL";
2429                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2430                                 $allow_archived = true;
2431
2432                                 if (!$override_order) $override_order = "last_read DESC";
2433                         } else if ($feed == -3) { // fresh virtual feed
2434                                 $query_strategy_part = "unread = true AND score >= 0";
2435
2436                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
2437
2438                                 if (DB_TYPE == "pgsql") {
2439                                         $query_strategy_part .= " AND date_entered > NOW() - INTERVAL '$intl hour' ";
2440                                 } else {
2441                                         $query_strategy_part .= " AND date_entered > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
2442                                 }
2443
2444                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2445                         } else if ($feed == -4) { // all articles virtual feed
2446                                 $allow_archived = true;
2447                                 $query_strategy_part = "true";
2448                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2449                         } else if ($feed <= LABEL_BASE_INDEX) { // labels
2450                                 $label_id = feed_to_label_id($feed);
2451
2452                                 $query_strategy_part = "label_id = '$label_id' AND
2453                                         ttrss_labels2.id = ttrss_user_labels2.label_id AND
2454                                         ttrss_user_labels2.article_id = ref_id";
2455
2456                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2457                                 $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2458                                 $allow_archived = true;
2459
2460                         } else {
2461                                 $query_strategy_part = "true";
2462                         }
2463
2464                         $order_by = "score DESC, date_entered DESC, updated DESC";
2465
2466                         if ($view_mode == "unread_first") {
2467                                 $order_by = "unread DESC, $order_by";
2468                         }
2469
2470                         if ($override_order) {
2471                                 $order_by = $override_order;
2472                         }
2473
2474                         $feed_title = "";
2475
2476                         if ($search) {
2477                                 $feed_title = T_sprintf("Search results: %s", $search);
2478                         } else {
2479                                 if ($cat_view) {
2480                                         $feed_title = getCategoryTitle($link, $feed);
2481                                 } else {
2482                                         if (is_numeric($feed) && $feed > 0) {
2483                                                 $result = db_query($link, "SELECT title,site_url,last_error
2484                                                         FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = $owner_uid");
2485
2486                                                 $feed_title = db_fetch_result($result, 0, "title");
2487                                                 $feed_site_url = db_fetch_result($result, 0, "site_url");
2488                                                 $last_error = db_fetch_result($result, 0, "last_error");
2489                                         } else {
2490                                                 $feed_title = getFeedTitle($link, $feed);
2491                                         }
2492                                 }
2493                         }
2494
2495                         $content_query_part = "content as content_preview, cached_content, ";
2496
2497                         if (is_numeric($feed)) {
2498
2499                                 if ($feed >= 0) {
2500                                         $feed_kind = "Feeds";
2501                                 } else {
2502                                         $feed_kind = "Labels";
2503                                 }
2504
2505                                 if ($limit_query_part) {
2506                                         $offset_query_part = "OFFSET $offset";
2507                                 }
2508
2509                                 // proper override_order applied above
2510                                 if ($vfeed_query_part && !$ignore_vfeed_group && get_pref($link, 'VFEED_GROUP_BY_FEED', $owner_uid)) {
2511                                         if (!$override_order) {
2512                                                 $order_by = "ttrss_feeds.title, $order_by";
2513                                         } else {
2514                                                 $order_by = "ttrss_feeds.title, $override_order";
2515                                         }
2516                                 }
2517
2518                                 if (!$allow_archived) {
2519                                         $from_qpart = "ttrss_entries,ttrss_user_entries,ttrss_feeds$ext_tables_part";
2520                                         $feed_check_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
2521
2522                                 } else {
2523                                         $from_qpart = "ttrss_entries$ext_tables_part,ttrss_user_entries
2524                                                 LEFT JOIN ttrss_feeds ON (feed_id = ttrss_feeds.id)";
2525                                 }
2526
2527                                 $query = "SELECT DISTINCT
2528                                                 date_entered,
2529                                                 guid,
2530                                                 ttrss_entries.id,ttrss_entries.title,
2531                                                 updated,
2532                                                 label_cache,
2533                                                 tag_cache,
2534                                                 always_display_enclosures,
2535                                                 site_url,
2536                                                 note,
2537                                                 num_comments,
2538                                                 comments,
2539                                                 int_id,
2540                                                 hide_images,
2541                                                 unread,feed_id,marked,published,link,last_read,orig_feed_id,
2542                                                 last_marked, last_published,
2543                                                 $vfeed_query_part
2544                                                 $content_query_part
2545                                                 author,score
2546                                         FROM
2547                                                 $from_qpart
2548                                         WHERE
2549                                         $feed_check_qpart
2550                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
2551                                         ttrss_user_entries.owner_uid = '$owner_uid' AND
2552                                         $search_query_part
2553                                         $filter_query_part
2554                                         $view_query_part
2555                                         $since_id_part
2556                                         $query_strategy_part ORDER BY $order_by
2557                                         $limit_query_part $offset_query_part";
2558
2559                                 if ($_REQUEST["debug"]) print $query;
2560
2561                                 $result = db_query($link, $query);
2562
2563                         } else {
2564                                 // browsing by tag
2565
2566                                 $select_qpart = "SELECT DISTINCT " .
2567                                                                 "date_entered," .
2568                                                                 "guid," .
2569                                                                 "note," .
2570                                                                 "ttrss_entries.id as id," .
2571                                                                 "title," .
2572                                                                 "updated," .
2573                                                                 "unread," .
2574                                                                 "feed_id," .
2575                                                                 "orig_feed_id," .
2576                                                                 "marked," .
2577                                                                 "num_comments, " .
2578                                                                 "comments, " .
2579                                                                 "tag_cache," .
2580                                                                 "label_cache," .
2581                                                                 "link," .
2582                                                                 "last_read," .
2583                                                                 "(SELECT hide_images FROM ttrss_feeds WHERE id = feed_id) AS hide_images," .
2584                                                                 "last_marked, last_published, " .
2585                                                                 $since_id_part .
2586                                                                 $vfeed_query_part .
2587                                                                 $content_query_part .
2588                                                                 "score ";
2589
2590                                 $feed_kind = "Tags";
2591                                 $all_tags = explode(",", $feed);
2592                                 if ($search_mode == 'any') {
2593                                         $tag_sql = "tag_name in (" . implode(", ", array_map("db_quote", $all_tags)) . ")";
2594                                         $from_qpart = " FROM ttrss_entries,ttrss_user_entries,ttrss_tags ";
2595                                         $where_qpart = " WHERE " .
2596                                                                    "ref_id = ttrss_entries.id AND " .
2597                                                                    "ttrss_user_entries.owner_uid = $owner_uid AND " .
2598                                                                    "post_int_id = int_id AND $tag_sql AND " .
2599                                                                    $view_query_part .
2600                                                                    $search_query_part .
2601                                                                    $query_strategy_part . " ORDER BY $order_by " .
2602                                                                    $limit_query_part;
2603
2604                                 } else {
2605                                         $i = 1;
2606                                         $sub_selects = array();
2607                                         $sub_ands = array();
2608                                         foreach ($all_tags as $term) {
2609                                                 array_push($sub_selects, "(SELECT post_int_id from ttrss_tags WHERE tag_name = " . db_quote($term) . " AND owner_uid = $owner_uid) as A$i");
2610                                                 $i++;
2611                                         }
2612                                         if ($i > 2) {
2613                                                 $x = 1;
2614                                                 $y = 2;
2615                                                 do {
2616                                                         array_push($sub_ands, "A$x.post_int_id = A$y.post_int_id");
2617                                                         $x++;
2618                                                         $y++;
2619                                                 } while ($y < $i);
2620                                         }
2621                                         array_push($sub_ands, "A1.post_int_id = ttrss_user_entries.int_id and ttrss_user_entries.owner_uid = $owner_uid");
2622                                         array_push($sub_ands, "ttrss_user_entries.ref_id = ttrss_entries.id");
2623                                         $from_qpart = " FROM " . implode(", ", $sub_selects) . ", ttrss_user_entries, ttrss_entries";
2624                                         $where_qpart = " WHERE " . implode(" AND ", $sub_ands);
2625                                 }
2626                                 //                              error_log("TAG SQL: " . $tag_sql);
2627                                 // $tag_sql = "tag_name = '$feed'";   DEFAULT way
2628
2629                                 //                              error_log("[". $select_qpart . "][" . $from_qpart . "][" .$where_qpart . "]");
2630                                 $result = db_query($link, $select_qpart . $from_qpart . $where_qpart);
2631                         }
2632
2633                         return array($result, $feed_title, $feed_site_url, $last_error);
2634
2635         }
2636
2637         function sanitize($link, $str, $force_remove_images = false, $owner = false, $site_url = false) {
2638                 if (!$owner) $owner = $_SESSION["uid"];
2639
2640                 $res = trim($str); if (!$res) return '';
2641
2642                 if (strpos($res, "href=") === false)
2643                         $res = rewrite_urls($res);
2644
2645                 $charset_hack = '<head>
2646                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
2647                 </head>';
2648
2649                 $res = trim($res); if (!$res) return '';
2650
2651                 libxml_use_internal_errors(true);
2652
2653                 $doc = new DOMDocument();
2654                 $doc->loadHTML($charset_hack . $res);
2655                 $xpath = new DOMXPath($doc);
2656
2657                 $entries = $xpath->query('(//a[@href]|//img[@src])');
2658
2659                 foreach ($entries as $entry) {
2660
2661                         if ($site_url) {
2662
2663                                 if ($entry->hasAttribute('href'))
2664                                         $entry->setAttribute('href',
2665                                                 rewrite_relative_url($site_url, $entry->getAttribute('href')));
2666
2667                                 if ($entry->hasAttribute('src')) {
2668                                         $src = rewrite_relative_url($site_url, $entry->getAttribute('src'));
2669
2670                                         $cached_filename = CACHE_DIR . '/images/' . sha1($src) . '.png';
2671
2672                                         if (file_exists($cached_filename)) {
2673                                                 $src = SELF_URL_PATH . '/image.php?hash=' . sha1($src);
2674                                         }
2675
2676                                         $entry->setAttribute('src', $src);
2677                                 }
2678
2679                                 if ($entry->nodeName == 'img') {
2680                                         if (($owner && get_pref($link, "STRIP_IMAGES", $owner)) ||
2681                                                         $force_remove_images || $_SESSION["bw_limit"]) {
2682
2683                                                 $p = $doc->createElement('p');
2684
2685                                                 $a = $doc->createElement('a');
2686                                                 $a->setAttribute('href', $entry->getAttribute('src'));
2687
2688                                                 $a->appendChild(new DOMText($entry->getAttribute('src')));
2689                                                 $a->setAttribute('target', '_blank');
2690
2691                                                 $p->appendChild($a);
2692
2693                                                 $entry->parentNode->replaceChild($p, $entry);
2694                                         }
2695                                 }
2696                         }
2697
2698                         if (strtolower($entry->nodeName) == "a") {
2699                                 $entry->setAttribute("target", "_blank");
2700                         }
2701                 }
2702
2703                 $entries = $xpath->query('//iframe');
2704                 foreach ($entries as $entry) {
2705                         $entry->setAttribute('sandbox', 'allow-scripts');
2706
2707                 }
2708
2709                 $allowed_elements = array('a', 'address', 'audio', 'article', 'aside',
2710                         'b', 'bdi', 'bdo', 'big', 'blockquote', 'body', 'br',
2711                         'caption', 'cite', 'center', 'code', 'col', 'colgroup',
2712                         'data', 'dd', 'del', 'details', 'div', 'dl', 'font',
2713                         'dt', 'em', 'footer', 'figure', 'figcaption',
2714                         'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'header', 'html', 'i',
2715                         'img', 'ins', 'kbd', 'li', 'main', 'mark', 'nav', 'noscript',
2716                         'ol', 'p', 'pre', 'q', 'ruby', 'rp', 'rt', 's', 'samp', 'section',
2717                         'small', 'source', 'span', 'strike', 'strong', 'sub', 'summary',
2718                         'sup', 'table', 'tbody', 'td', 'tfoot', 'th', 'thead', 'time',
2719                         'tr', 'track', 'tt', 'u', 'ul', 'var', 'wbr', 'video' );
2720
2721                 if ($_SESSION['hasSandbox']) $allowed_elements[] = 'iframe';
2722
2723                 $disallowed_attributes = array('id', 'style', 'class');
2724
2725                 global $pluginhost;
2726
2727                 if (isset($pluginhost)) {
2728                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_SANITIZE) as $plugin) {
2729                                 $retval = $plugin->hook_sanitize($doc, $site_url, $allowed_elements, $disallowed_attributes);
2730                                 if (is_array($retval)) {
2731                                         $doc = $retval[0];
2732                                         $allowed_elements = $retval[1];
2733                                         $disallowed_attributes = $retval[2];
2734                                 } else {
2735                                         $doc = $retval;
2736                                 }
2737                         }
2738                 }
2739
2740                 $doc->removeChild($doc->firstChild); //remove doctype
2741                 $doc = strip_harmful_tags($doc, $allowed_elements, $disallowed_attributes);
2742                 $res = $doc->saveHTML();
2743                 return $res;
2744         }
2745
2746         function strip_harmful_tags($doc, $allowed_elements, $disallowed_attributes) {
2747                 $entries = $doc->getElementsByTagName("*");
2748
2749                 foreach ($entries as $entry) {
2750                         if (!in_array($entry->nodeName, $allowed_elements)) {
2751                                 $entry->parentNode->removeChild($entry);
2752                         }
2753
2754                         if ($entry->hasAttributes()) {
2755                                 $attrs_to_remove = array();
2756
2757                                 foreach ($entry->attributes as $attr) {
2758
2759                                         if (strpos($attr->nodeName, 'on') === 0) {
2760                                                 array_push($attrs_to_remove, $attr);
2761                                         }
2762
2763                                         if (in_array($attr->nodeName, $disallowed_attributes)) {
2764                                                 array_push($attrs_to_remove, $attr);
2765                                         }
2766                                 }
2767
2768                                 foreach ($attrs_to_remove as $attr) {
2769                                         $entry->removeAttributeNode($attr);
2770                                 }
2771                         }
2772                 }
2773
2774                 return $doc;
2775         }
2776
2777         function check_for_update($link) {
2778                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2779                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION .
2780                                 "&iid=" . sha1(SELF_URL_PATH);
2781
2782                         $version_data = @fetch_file_contents($version_url);
2783
2784                         if ($version_data) {
2785                                 $version_data = json_decode($version_data, true);
2786                                 if ($version_data && $version_data['version']) {
2787
2788                                         if (version_compare(VERSION, $version_data['version']) == -1) {
2789                                                 return $version_data;
2790                                         }
2791                                 }
2792                         }
2793                 }
2794                 return false;
2795         }
2796
2797         function catchupArticlesById($link, $ids, $cmode, $owner_uid = false) {
2798
2799                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2800                 if (count($ids) == 0) return;
2801
2802                 $tmp_ids = array();
2803
2804                 foreach ($ids as $id) {
2805                         array_push($tmp_ids, "ref_id = '$id'");
2806                 }
2807
2808                 $ids_qpart = join(" OR ", $tmp_ids);
2809
2810                 if ($cmode == 0) {
2811                         db_query($link, "UPDATE ttrss_user_entries SET
2812                         unread = false,last_read = NOW()
2813                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2814                 } else if ($cmode == 1) {
2815                         db_query($link, "UPDATE ttrss_user_entries SET
2816                         unread = true
2817                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2818                 } else {
2819                         db_query($link, "UPDATE ttrss_user_entries SET
2820                         unread = NOT unread,last_read = NOW()
2821                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2822                 }
2823
2824                 /* update ccache */
2825
2826                 $result = db_query($link, "SELECT DISTINCT feed_id FROM ttrss_user_entries
2827                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2828
2829                 while ($line = db_fetch_assoc($result)) {
2830                         ccache_update($link, $line["feed_id"], $owner_uid);
2831                 }
2832         }
2833
2834         function get_article_tags($link, $id, $owner_uid = 0, $tag_cache = false) {
2835
2836                 $a_id = db_escape_string($link, $id);
2837
2838                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2839
2840                 $query = "SELECT DISTINCT tag_name,
2841                         owner_uid as owner FROM
2842                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
2843                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
2844
2845                 $obj_id = md5("TAGS:$owner_uid:$id");
2846                 $tags = array();
2847
2848                 /* check cache first */
2849
2850                 if ($tag_cache === false) {
2851                         $result = db_query($link, "SELECT tag_cache FROM ttrss_user_entries
2852                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2853
2854                         $tag_cache = db_fetch_result($result, 0, "tag_cache");
2855                 }
2856
2857                 if ($tag_cache) {
2858                         $tags = explode(",", $tag_cache);
2859                 } else {
2860
2861                         /* do it the hard way */
2862
2863                         $tmp_result = db_query($link, $query);
2864
2865                         while ($tmp_line = db_fetch_assoc($tmp_result)) {
2866                                 array_push($tags, $tmp_line["tag_name"]);
2867                         }
2868
2869                         /* update the cache */
2870
2871                         $tags_str = db_escape_string($link, join(",", $tags));
2872
2873                         db_query($link, "UPDATE ttrss_user_entries
2874                                 SET tag_cache = '$tags_str' WHERE ref_id = '$id'
2875                                 AND owner_uid = $owner_uid");
2876                 }
2877
2878                 return $tags;
2879         }
2880
2881         function trim_array($array) {
2882                 $tmp = $array;
2883                 array_walk($tmp, 'trim');
2884                 return $tmp;
2885         }
2886
2887         function tag_is_valid($tag) {
2888                 if ($tag == '') return false;
2889                 if (preg_match("/^[0-9]*$/", $tag)) return false;
2890                 if (mb_strlen($tag) > 250) return false;
2891
2892                 if (function_exists('iconv')) {
2893                         $tag = iconv("utf-8", "utf-8", $tag);
2894                 }
2895
2896                 if (!$tag) return false;
2897
2898                 return true;
2899         }
2900
2901         function render_login_form($link) {
2902                 require_once "login_form.php";
2903                 exit;
2904         }
2905
2906         // from http://developer.apple.com/internet/safari/faq.html
2907         function no_cache_incantation() {
2908                 header("Expires: Mon, 22 Dec 1980 00:00:00 GMT"); // Happy birthday to me :)
2909                 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
2910                 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); // HTTP/1.1
2911                 header("Cache-Control: post-check=0, pre-check=0", false);
2912                 header("Pragma: no-cache"); // HTTP/1.0
2913         }
2914
2915         function format_warning($msg, $id = "") {
2916                 global $link;
2917                 return "<div class=\"warning\" id=\"$id\">
2918                         <img src=\"images/sign_excl.svg\"><div class='inner'>$msg</div></div>";
2919         }
2920
2921         function format_notice($msg, $id = "") {
2922                 global $link;
2923                 return "<div class=\"notice\" id=\"$id\">
2924                         <img src=\"images/sign_info.svg\"><div class='inner'>$msg</div></div>";
2925         }
2926
2927         function format_error($msg, $id = "") {
2928                 global $link;
2929                 return "<div class=\"error\" id=\"$id\">
2930                         <img src=\"images/sign_excl.svg\"><div class='inner'>$msg</div></div>";
2931         }
2932
2933         function print_notice($msg) {
2934                 return print format_notice($msg);
2935         }
2936
2937         function print_warning($msg) {
2938                 return print format_warning($msg);
2939         }
2940
2941         function print_error($msg) {
2942                 return print format_error($msg);
2943         }
2944
2945
2946         function T_sprintf() {
2947                 $args = func_get_args();
2948                 return vsprintf(__(array_shift($args)), $args);
2949         }
2950
2951         function format_inline_player($link, $url, $ctype) {
2952
2953                 $entry = "";
2954
2955                 $url = htmlspecialchars($url);
2956
2957                 if (strpos($ctype, "audio/") === 0) {
2958
2959                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
2960                                 strpos($_SERVER['HTTP_USER_AGENT'], "Chrome") !== false ||
2961                                 strpos($_SERVER['HTTP_USER_AGENT'], "Safari") !== false )) {
2962
2963                                 $id = 'AUDIO-' . uniqid();
2964
2965                                 $entry .= "<audio id=\"$id\"\" controls style='display : none'>
2966                                         <source type=\"$ctype\" src=\"$url\"></source>
2967                                         </audio>";
2968
2969                                 $entry .= "<span onclick=\"player(this)\"
2970                                         title=\"".__("Click to play")."\" status=\"0\"
2971                                         class=\"player\" audio-id=\"$id\">".__("Play")."</span>";
2972
2973                         } else {
2974
2975                                 $entry .= "<object type=\"application/x-shockwave-flash\"
2976                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
2977                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
2978                                         <param name=\"movie\"
2979                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
2980                                         </object>";
2981                         }
2982
2983                         if ($entry) $entry .= "&nbsp; <a target=\"_blank\"
2984                                 href=\"$url\">" . basename($url) . "</a>";
2985
2986                         return $entry;
2987
2988                 }
2989
2990                 return "";
2991
2992 /*              $filename = substr($url, strrpos($url, "/")+1);
2993
2994                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
2995                         $filename . " (" . $ctype . ")" . "</a>"; */
2996
2997         }
2998
2999         function format_article($link, $id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
3000                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3001
3002                 $rv = array();
3003
3004                 $rv['id'] = $id;
3005
3006                 /* we can figure out feed_id from article id anyway, why do we
3007                  * pass feed_id here? let's ignore the argument :( */
3008
3009                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3010                         WHERE ref_id = '$id'");
3011
3012                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
3013
3014                 $rv['feed_id'] = $feed_id;
3015
3016                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
3017
3018                 if ($mark_as_read) {
3019                         $result = db_query($link, "UPDATE ttrss_user_entries
3020                                 SET unread = false,last_read = NOW()
3021                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
3022
3023                         ccache_update($link, $feed_id, $owner_uid);
3024                 }
3025
3026                 $result = db_query($link, "SELECT id,title,link,content,feed_id,comments,int_id,
3027                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
3028                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
3029                         (SELECT hide_images FROM ttrss_feeds WHERE id = feed_id) as hide_images,
3030                         (SELECT always_display_enclosures FROM ttrss_feeds WHERE id = feed_id) as always_display_enclosures,
3031                         num_comments,
3032                         tag_cache,
3033                         author,
3034                         orig_feed_id,
3035                         note,
3036                         cached_content
3037                         FROM ttrss_entries,ttrss_user_entries
3038                         WHERE   id = '$id' AND ref_id = id AND owner_uid = $owner_uid");
3039
3040                 if ($result) {
3041
3042                         $line = db_fetch_assoc($result);
3043
3044                         $tag_cache = $line["tag_cache"];
3045
3046                         $line["tags"] = get_article_tags($link, $id, $owner_uid, $line["tag_cache"]);
3047                         unset($line["tag_cache"]);
3048
3049                         $line["content"] = sanitize($link, $line["content"], false, $owner_uid, $line["site_url"]);
3050
3051                         global $pluginhost;
3052
3053                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_RENDER_ARTICLE) as $p) {
3054                                 $line = $p->hook_render_article($line);
3055                         }
3056
3057                         $num_comments = $line["num_comments"];
3058                         $entry_comments = "";
3059
3060                         if ($num_comments > 0) {
3061                                 if ($line["comments"]) {
3062                                         $comments_url = htmlspecialchars($line["comments"]);
3063                                 } else {
3064                                         $comments_url = htmlspecialchars($line["link"]);
3065                                 }
3066                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
3067                         } else {
3068                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
3069                                         $entry_comments = "<a target='_blank' href=\"".htmlspecialchars($line["comments"])."\">comments</a>";
3070                                 }
3071                         }
3072
3073                         if ($zoom_mode) {
3074                                 header("Content-Type: text/html");
3075                                 $rv['content'] .= "<html><head>
3076                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
3077                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
3078                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
3079                                         </head><body id=\"ttrssZoom\">";
3080                         }
3081
3082                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
3083
3084                         $rv['content'] .= "<div class=\"postHeader\" id=\"POSTHDR-$id\">";
3085
3086                         $entry_author = $line["author"];
3087
3088                         if ($entry_author) {
3089                                 $entry_author = __(" - ") . $entry_author;
3090                         }
3091
3092                         $parsed_updated = make_local_datetime($link, $line["updated"], true,
3093                                 $owner_uid, true);
3094
3095                         $rv['content'] .= "<div class=\"postDate\">$parsed_updated</div>";
3096
3097                         if ($line["link"]) {
3098                                 $rv['content'] .= "<div class='postTitle'><a target='_blank'
3099                                         title=\"".htmlspecialchars($line['title'])."\"
3100                                         href=\"" .
3101                                         htmlspecialchars($line["link"]) . "\">" .
3102                                         $line["title"] . "</a>" .
3103                                         "<span class='author'>$entry_author</span></div>";
3104                         } else {
3105                                 $rv['content'] .= "<div class='postTitle'>" . $line["title"] . "$entry_author</div>";
3106                         }
3107
3108                         $tags_str = format_tags_string($line["tags"], $id);
3109                         $tags_str_full = join(", ", $line["tags"]);
3110
3111                         if (!$tags_str_full) $tags_str_full = __("no tags");
3112
3113                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
3114
3115                         $rv['content'] .= "<div class='postTags' style='float : right'>
3116                                 <img src='images/tag.png'
3117                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
3118
3119                         if (!$zoom_mode) {
3120                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
3121                                         <a title=\"".__('Edit tags for this article')."\"
3122                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
3123
3124                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
3125                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
3126                                         position=\"below\">$tags_str_full</div>";
3127
3128                                 global $pluginhost;
3129
3130                                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_ARTICLE_BUTTON) as $p) {
3131                                         $rv['content'] .= $p->hook_article_button($line);
3132                                 }
3133
3134
3135                         } else {
3136                                 $tags_str = strip_tags($tags_str);
3137                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
3138                         }
3139                         $rv['content'] .= "</div>";
3140                         $rv['content'] .= "<div clear='both'>$entry_comments</div>";
3141
3142                         if ($line["orig_feed_id"]) {
3143
3144                                 $tmp_result = db_query($link, "SELECT * FROM ttrss_archived_feeds
3145                                         WHERE id = ".$line["orig_feed_id"]);
3146
3147                                 if (db_num_rows($tmp_result) != 0) {
3148
3149                                         $rv['content'] .= "<div clear='both'>";
3150                                         $rv['content'] .= __("Originally from:");
3151
3152                                         $rv['content'] .= "&nbsp;";
3153
3154                                         $tmp_line = db_fetch_assoc($tmp_result);
3155
3156                                         $rv['content'] .= "<a target='_blank'
3157                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
3158                                                 $tmp_line['title'] . "</a>";
3159
3160                                         $rv['content'] .= "&nbsp;";
3161
3162                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3163                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.svg'></a>";
3164
3165                                         $rv['content'] .= "</div>";
3166                                 }
3167                         }
3168
3169                         $rv['content'] .= "</div>";
3170
3171                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3172                                 if ($line['note']) {
3173                                         $rv['content'] .= format_article_note($id, $line['note'], !$zoom_mode);
3174                                 }
3175                         $rv['content'] .= "</div>";
3176
3177                         $rv['content'] .= "<div class=\"postContent\">";
3178
3179                         $rv['content'] .= $line["content"];
3180                         $rv['content'] .= format_article_enclosures($link, $id,
3181                                 sql_bool_to_bool($line["always_display_enclosures"]),
3182                                 $line["content"],
3183                                 sql_bool_to_bool($line["hide_images"]));
3184
3185                         $rv['content'] .= "</div>";
3186
3187                         $rv['content'] .= "</div>";
3188
3189                 }
3190
3191                 if ($zoom_mode) {
3192                         $rv['content'] .= "
3193                                 <div class='footer'>
3194                                 <button onclick=\"return window.close()\">".
3195                                         __("Close this window")."</button></div>";
3196                         $rv['content'] .= "</body></html>";
3197                 }
3198
3199                 return $rv;
3200
3201         }
3202
3203         function print_checkpoint($n, $s) {
3204                 $ts = microtime(true);
3205                 echo sprintf("<!-- CP[$n] %.4f seconds -->", $ts - $s);
3206                 return $ts;
3207         }
3208
3209         function sanitize_tag($tag) {
3210                 $tag = trim($tag);
3211
3212                 $tag = mb_strtolower($tag, 'utf-8');
3213
3214                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3215
3216 //              $tag = str_replace('"', "", $tag);
3217 //              $tag = str_replace("+", " ", $tag);
3218                 $tag = str_replace("technorati tag: ", "", $tag);
3219
3220                 return $tag;
3221         }
3222
3223         function get_self_url_prefix() {
3224                 if (strrpos(SELF_URL_PATH, "/") === strlen(SELF_URL_PATH)-1) {
3225                         return substr(SELF_URL_PATH, 0, strlen(SELF_URL_PATH)-1);
3226                 } else {
3227                         return SELF_URL_PATH;
3228                 }
3229         }
3230
3231         /**
3232          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3233          *
3234          * @return string The Mozilla Firefox feed adding URL.
3235          */
3236         function add_feed_url() {
3237                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3238
3239                 $url_path = get_self_url_prefix() .
3240                         "/public.php?op=subscribe&feed_url=%s";
3241                 return $url_path;
3242         } // function add_feed_url
3243
3244         function encrypt_password($pass, $salt = '', $mode2 = false) {
3245                 if ($salt && $mode2) {
3246                         return "MODE2:" . hash('sha256', $salt . $pass);
3247                 } else if ($salt) {
3248                         return "SHA1X:" . sha1("$salt:$pass");
3249                 } else {
3250                         return "SHA1:" . sha1($pass);
3251                 }
3252         } // function encrypt_password
3253
3254         function load_filters($link, $feed_id, $owner_uid, $action_id = false) {
3255                 $filters = array();
3256
3257                 $cat_id = (int)getFeedCategory($link, $feed_id);
3258
3259                 $result = db_query($link, "SELECT * FROM ttrss_filters2 WHERE
3260                         owner_uid = $owner_uid AND enabled = true ORDER BY order_id, title");
3261
3262                 $check_cats = join(",", array_merge(
3263                         getParentCategories($link, $cat_id, $owner_uid),
3264                         array($cat_id)));
3265
3266                 while ($line = db_fetch_assoc($result)) {
3267                         $filter_id = $line["id"];
3268
3269                         $result2 = db_query($link, "SELECT
3270                                 r.reg_exp, r.inverse, r.feed_id, r.cat_id, r.cat_filter, t.name AS type_name
3271                                 FROM ttrss_filters2_rules AS r,
3272                                 ttrss_filter_types AS t
3273                                 WHERE
3274                                         (cat_id IS NULL OR cat_id IN ($check_cats)) AND
3275                                         (feed_id IS NULL OR feed_id = '$feed_id') AND
3276                                         filter_type = t.id AND filter_id = '$filter_id'");
3277
3278                         $rules = array();
3279                         $actions = array();
3280
3281                         while ($rule_line = db_fetch_assoc($result2)) {
3282 #                               print_r($rule_line);
3283
3284                                 $rule = array();
3285                                 $rule["reg_exp"] = $rule_line["reg_exp"];
3286                                 $rule["type"] = $rule_line["type_name"];
3287                                 $rule["inverse"] = sql_bool_to_bool($rule_line["inverse"]);
3288
3289                                 array_push($rules, $rule);
3290                         }
3291
3292                         $result2 = db_query($link, "SELECT a.action_param,t.name AS type_name
3293                                 FROM ttrss_filters2_actions AS a,
3294                                 ttrss_filter_actions AS t
3295                                 WHERE
3296                                         action_id = t.id AND filter_id = '$filter_id'");
3297
3298                         while ($action_line = db_fetch_assoc($result2)) {
3299 #                               print_r($action_line);
3300
3301                                 $action = array();
3302                                 $action["type"] = $action_line["type_name"];
3303                                 $action["param"] = $action_line["action_param"];
3304
3305                                 array_push($actions, $action);
3306                         }
3307
3308
3309                         $filter = array();
3310                         $filter["match_any_rule"] = sql_bool_to_bool($line["match_any_rule"]);
3311                         $filter["inverse"] = sql_bool_to_bool($line["inverse"]);
3312                         $filter["rules"] = $rules;
3313                         $filter["actions"] = $actions;
3314
3315                         if (count($rules) > 0 && count($actions) > 0) {
3316                                 array_push($filters, $filter);
3317                         }
3318                 }
3319
3320                 return $filters;
3321         }
3322
3323         function get_score_pic($score) {
3324                 if ($score > 100) {
3325                         return "score_high.png";
3326                 } else if ($score > 0) {
3327                         return "score_half_high.png";
3328                 } else if ($score < -100) {
3329                         return "score_low.png";
3330                 } else if ($score < 0) {
3331                         return "score_half_low.png";
3332                 } else {
3333                         return "score_neutral.png";
3334                 }
3335         }
3336
3337         function feed_has_icon($id) {
3338                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3339         }
3340
3341         function init_connection($link) {
3342                 if ($link) {
3343
3344                         if (DB_TYPE == "pgsql") {
3345                                 pg_query($link, "set client_encoding = 'UTF-8'");
3346                                 pg_set_client_encoding("UNICODE");
3347                                 pg_query($link, "set datestyle = 'ISO, european'");
3348                                 pg_query($link, "set TIME ZONE 0");
3349                         } else {
3350                                 db_query($link, "SET time_zone = '+0:0'");
3351
3352                                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
3353                                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
3354                                 }
3355                         }
3356
3357                         global $pluginhost;
3358
3359                         $pluginhost = new PluginHost($link);
3360                         $pluginhost->load(PLUGINS, $pluginhost::KIND_ALL);
3361
3362                         return true;
3363                 } else {
3364                         print "Unable to connect to database:" . db_last_error();
3365                         return false;
3366                 }
3367         }
3368
3369         function format_tags_string($tags, $id) {
3370
3371                 $tags_str = "";
3372                 $tags_nolinks_str = "";
3373
3374                 $num_tags = 0;
3375
3376                 $tag_limit = 6;
3377
3378                 $formatted_tags = array();
3379
3380                 foreach ($tags as $tag) {
3381                         $num_tags++;
3382                         $tag_escaped = str_replace("'", "\\'", $tag);
3383
3384                         if (mb_strlen($tag) > 30) {
3385                                 $tag = truncate_string($tag, 30);
3386                         }
3387
3388                         $tag_str = "<a href=\"javascript:viewfeed('$tag_escaped')\">$tag</a>";
3389
3390                         array_push($formatted_tags, $tag_str);
3391
3392                         $tmp_tags_str = implode(", ", $formatted_tags);
3393
3394                         if ($num_tags == $tag_limit || mb_strlen($tmp_tags_str) > 150) {
3395                                 break;
3396                         }
3397                 }
3398
3399                 $tags_str = implode(", ", $formatted_tags);
3400
3401                 if ($num_tags < count($tags)) {
3402                         $tags_str .= ", &hellip;";
3403                 }
3404
3405                 if ($num_tags == 0) {
3406                         $tags_str = __("no tags");
3407                 }
3408
3409                 return $tags_str;
3410
3411         }
3412
3413         function format_article_labels($labels, $id) {
3414
3415                 $labels_str = "";
3416
3417                 foreach ($labels as $l) {
3418                         $labels_str .= sprintf("<span class='hlLabelRef'
3419                                 style='color : %s; background-color : %s'>%s</span>",
3420                                         $l[2], $l[3], $l[1]);
3421                         }
3422
3423                 return $labels_str;
3424
3425         }
3426
3427         function format_article_note($id, $note, $allow_edit = true) {
3428
3429                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
3430                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
3431                         ($allow_edit ? __('(edit note)') : "")."</div>$note</div>";
3432
3433                 return $str;
3434         }
3435
3436
3437         function get_feed_category($link, $feed_cat, $parent_cat_id = false) {
3438                 if ($parent_cat_id) {
3439                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3440                         $parent_insert = "'$parent_cat_id'";
3441                 } else {
3442                         $parent_qpart = "parent_cat IS NULL";
3443                         $parent_insert = "NULL";
3444                 }
3445
3446                 $result = db_query($link,
3447                         "SELECT id FROM ttrss_feed_categories
3448                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3449
3450                 if (db_num_rows($result) == 0) {
3451                         return false;
3452                 } else {
3453                         return db_fetch_result($result, 0, "id");
3454                 }
3455         }
3456
3457         function add_feed_category($link, $feed_cat, $parent_cat_id = false) {
3458
3459                 if (!$feed_cat) return false;
3460
3461                 db_query($link, "BEGIN");
3462
3463                 if ($parent_cat_id) {
3464                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3465                         $parent_insert = "'$parent_cat_id'";
3466                 } else {
3467                         $parent_qpart = "parent_cat IS NULL";
3468                         $parent_insert = "NULL";
3469                 }
3470
3471                 $feed_cat = mb_substr($feed_cat, 0, 250);
3472
3473                 $result = db_query($link,
3474                         "SELECT id FROM ttrss_feed_categories
3475                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3476
3477                 if (db_num_rows($result) == 0) {
3478
3479                         $result = db_query($link,
3480                                 "INSERT INTO ttrss_feed_categories (owner_uid,title,parent_cat)
3481                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat', $parent_insert)");
3482
3483                         db_query($link, "COMMIT");
3484
3485                         return true;
3486                 }
3487
3488                 return false;
3489         }
3490
3491         function getArticleFeed($link, $id) {
3492                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3493                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3494
3495                 if (db_num_rows($result) != 0) {
3496                         return db_fetch_result($result, 0, "feed_id");
3497                 } else {
3498                         return 0;
3499                 }
3500         }
3501
3502         /**
3503          * Fixes incomplete URLs by prepending "http://".
3504          * Also replaces feed:// with http://, and
3505          * prepends a trailing slash if the url is a domain name only.
3506          *
3507          * @param string $url Possibly incomplete URL
3508          *
3509          * @return string Fixed URL.
3510          */
3511         function fix_url($url) {
3512                 if (strpos($url, '://') === false) {
3513                         $url = 'http://' . $url;
3514                 } else if (substr($url, 0, 5) == 'feed:') {
3515                         $url = 'http:' . substr($url, 5);
3516                 }
3517
3518                 //prepend slash if the URL has no slash in it
3519                 // "http://www.example" -> "http://www.example/"
3520                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
3521                         $url .= '/';
3522                 }
3523
3524                 if ($url != "http:///")
3525                         return $url;
3526                 else
3527                         return '';
3528         }
3529
3530         function validate_feed_url($url) {
3531                 $parts = parse_url($url);
3532
3533                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
3534
3535         }
3536
3537         function get_article_enclosures($link, $id) {
3538
3539                 $query = "SELECT * FROM ttrss_enclosures
3540                         WHERE post_id = '$id' AND content_url != ''";
3541
3542                 $rv = array();
3543
3544                 $result = db_query($link, $query);
3545
3546                 if (db_num_rows($result) > 0) {
3547                         while ($line = db_fetch_assoc($result)) {
3548                                 array_push($rv, $line);
3549                         }
3550                 }
3551
3552                 return $rv;
3553         }
3554
3555         function save_email_address($link, $email) {
3556                 // FIXME: implement persistent storage of emails
3557
3558                 if (!$_SESSION['stored_emails'])
3559                         $_SESSION['stored_emails'] = array();
3560
3561                 if (!in_array($email, $_SESSION['stored_emails']))
3562                         array_push($_SESSION['stored_emails'], $email);
3563         }
3564
3565
3566         function get_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
3567
3568                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3569
3570                 $sql_is_cat = bool_to_sql_bool($is_cat);
3571
3572                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
3573                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
3574                         AND owner_uid = " . $owner_uid);
3575
3576                 if (db_num_rows($result) == 1) {
3577                         return db_fetch_result($result, 0, "access_key");
3578                 } else {
3579                         $key = db_escape_string($link, sha1(uniqid(rand(), true)));
3580
3581                         $result = db_query($link, "INSERT INTO ttrss_access_keys
3582                                 (access_key, feed_id, is_cat, owner_uid)
3583                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
3584
3585                         return $key;
3586                 }
3587                 return false;
3588         }
3589
3590         function get_feeds_from_html($url, $content)
3591         {
3592                 $url     = fix_url($url);
3593                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
3594
3595                 libxml_use_internal_errors(true);
3596
3597                 $doc = new DOMDocument();
3598                 $doc->loadHTML($content);
3599                 $xpath = new DOMXPath($doc);
3600                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
3601                 $feedUrls = array();
3602                 foreach ($entries as $entry) {
3603                         if ($entry->hasAttribute('href')) {
3604                                 $title = $entry->getAttribute('title');
3605                                 if ($title == '') {
3606                                         $title = $entry->getAttribute('type');
3607                                 }
3608                                 $feedUrl = rewrite_relative_url(
3609                                         $baseUrl, $entry->getAttribute('href')
3610                                 );
3611                                 $feedUrls[$feedUrl] = $title;
3612                         }
3613                 }
3614                 return $feedUrls;
3615         }
3616
3617         function is_html($content) {
3618                 return preg_match("/<html|DOCTYPE html/i", substr($content, 0, 20)) !== 0;
3619         }
3620
3621         function url_is_html($url, $login = false, $pass = false) {
3622                 return is_html(fetch_file_contents($url, false, $login, $pass));
3623         }
3624
3625         function print_label_select($link, $name, $value, $attributes = "") {
3626
3627                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
3628                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
3629
3630                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
3631                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
3632
3633                 while ($line = db_fetch_assoc($result)) {
3634
3635                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
3636
3637                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
3638                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
3639
3640                 }
3641
3642 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
3643
3644                 print "</select>";
3645
3646
3647         }
3648
3649         function format_article_enclosures($link, $id, $always_display_enclosures,
3650                                         $article_content, $hide_images = false) {
3651
3652                 $result = get_article_enclosures($link, $id);
3653                 $rv = '';
3654
3655                 if (count($result) > 0) {
3656
3657                         $entries_html = array();
3658                         $entries = array();
3659                         $entries_inline = array();
3660
3661                         foreach ($result as $line) {
3662
3663                                 $url = $line["content_url"];
3664                                 $ctype = $line["content_type"];
3665
3666                                 if (!$ctype) $ctype = __("unknown type");
3667
3668                                 $filename = substr($url, strrpos($url, "/")+1);
3669
3670                                 $player = format_inline_player($link, $url, $ctype);
3671
3672                                 if ($player) array_push($entries_inline, $player);
3673
3674 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3675 #                                       $filename . " (" . $ctype . ")" . "</a>";
3676
3677                                 $entry = "<div onclick=\"window.open('".htmlspecialchars($url)."')\"
3678                                         dojoType=\"dijit.MenuItem\">$filename ($ctype)</div>";
3679
3680                                 array_push($entries_html, $entry);
3681
3682                                 $entry = array();
3683
3684                                 $entry["type"] = $ctype;
3685                                 $entry["filename"] = $filename;
3686                                 $entry["url"] = $url;
3687
3688                                 array_push($entries, $entry);
3689                         }
3690
3691                         if ($_SESSION['uid'] && !get_pref($link, "STRIP_IMAGES") && !$_SESSION["bw_limit"]) {
3692                                 if ($always_display_enclosures ||
3693                                                         !preg_match("/<img/i", $article_content)) {
3694
3695                                         foreach ($entries as $entry) {
3696
3697                                                 if (preg_match("/image/", $entry["type"]) ||
3698                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
3699
3700                                                                 if (!$hide_images) {
3701                                                                         $rv .= "<p><img
3702                                                                         alt=\"".htmlspecialchars($entry["filename"])."\"
3703                                                                         src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
3704                                                                 } else {
3705                                                                         $rv .= "<p><a target=\"_blank\"
3706                                                                         href=\"".htmlspecialchars($entry["url"])."\"
3707                                                                         >" .htmlspecialchars($entry["url"]) . "</a></p>";
3708
3709                                                                 }
3710                                                 }
3711                                         }
3712                                 }
3713                         }
3714
3715                         if (count($entries_inline) > 0) {
3716                                 $rv .= "<hr clear='both'/>";
3717                                 foreach ($entries_inline as $entry) { $rv .= $entry; };
3718                                 $rv .= "<hr clear='both'/>";
3719                         }
3720
3721                         $rv .= "<select class=\"attachments\" onchange=\"openSelectedAttachment(this)\">".
3722                                 "<option value=''>" . __('Attachments')."</option>";
3723
3724                         foreach ($entries as $entry) {
3725                                 $rv .= "<option value=\"".htmlspecialchars($entry["url"])."\">" . htmlspecialchars($entry["filename"]) . "</option>";
3726
3727                         };
3728
3729                         $rv .= "</select>";
3730                 }
3731
3732                 return $rv;
3733         }
3734
3735         function getLastArticleId($link) {
3736                 $result = db_query($link, "SELECT MAX(ref_id) AS id FROM ttrss_user_entries
3737                         WHERE owner_uid = " . $_SESSION["uid"]);
3738
3739                 if (db_num_rows($result) == 1) {
3740                         return db_fetch_result($result, 0, "id");
3741                 } else {
3742                         return -1;
3743                 }
3744         }
3745
3746         function build_url($parts) {
3747                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
3748         }
3749
3750         /**
3751          * Converts a (possibly) relative URL to a absolute one.
3752          *
3753          * @param string $url     Base URL (i.e. from where the document is)
3754          * @param string $rel_url Possibly relative URL in the document
3755          *
3756          * @return string Absolute URL
3757          */
3758         function rewrite_relative_url($url, $rel_url) {
3759                 if (strpos($rel_url, "magnet:") === 0) {
3760                         return $rel_url;
3761                 } else if (strpos($rel_url, "://") !== false) {
3762                         return $rel_url;
3763                 } else if (strpos($rel_url, "//") === 0) {
3764                         # protocol-relative URL (rare but they exist)
3765                         return $rel_url;
3766                 } else if (strpos($rel_url, "/") === 0)
3767                 {
3768                         $parts = parse_url($url);
3769                         $parts['path'] = $rel_url;
3770
3771                         return build_url($parts);
3772
3773                 } else {
3774                         $parts = parse_url($url);
3775                         if (!isset($parts['path'])) {
3776                                 $parts['path'] = '/';
3777                         }
3778                         $dir = $parts['path'];
3779                         if (substr($dir, -1) !== '/') {
3780                                 $dir = dirname($parts['path']);
3781                                 $dir !== '/' && $dir .= '/';
3782                         }
3783                         $parts['path'] = $dir . $rel_url;
3784
3785                         return build_url($parts);
3786                 }
3787         }
3788
3789         function sphinx_search($query, $offset = 0, $limit = 30) {
3790                 require_once 'lib/sphinxapi.php';
3791
3792                 $sphinxClient = new SphinxClient();
3793
3794                 $sphinxClient->SetServer('localhost', 9312);
3795                 $sphinxClient->SetConnectTimeout(1);
3796
3797                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
3798                         'feed_title' => 20));
3799
3800                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
3801                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
3802                 $sphinxClient->SetLimits($offset, $limit, 1000);
3803                 $sphinxClient->SetArrayResult(false);
3804                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
3805
3806                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
3807
3808                 $ids = array();
3809
3810                 if (is_array($result['matches'])) {
3811                         foreach (array_keys($result['matches']) as $int_id) {
3812                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
3813                                 array_push($ids, $ref_id);
3814                         }
3815                 }
3816
3817                 return $ids;
3818         }
3819
3820         function cleanup_tags($link, $days = 14, $limit = 1000) {
3821
3822                 if (DB_TYPE == "pgsql") {
3823                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
3824                 } else if (DB_TYPE == "mysql") {
3825                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
3826                 }
3827
3828                 $tags_deleted = 0;
3829
3830                 while ($limit > 0) {
3831                         $limit_part = 500;
3832
3833                         $query = "SELECT ttrss_tags.id AS id
3834                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
3835                                 WHERE post_int_id = int_id AND $interval_query AND
3836                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
3837
3838                         $result = db_query($link, $query);
3839
3840                         $ids = array();
3841
3842                         while ($line = db_fetch_assoc($result)) {
3843                                 array_push($ids, $line['id']);
3844                         }
3845
3846                         if (count($ids) > 0) {
3847                                 $ids = join(",", $ids);
3848
3849                                 $tmp_result = db_query($link, "DELETE FROM ttrss_tags WHERE id IN ($ids)");
3850                                 $tags_deleted += db_affected_rows($link, $tmp_result);
3851                         } else {
3852                                 break;
3853                         }
3854
3855                         $limit -= $limit_part;
3856                 }
3857
3858                 return $tags_deleted;
3859         }
3860
3861         function print_user_stylesheet($link) {
3862                 $value = get_pref($link, 'USER_STYLESHEET');
3863
3864                 if ($value) {
3865                         print "<style type=\"text/css\">";
3866                         print str_replace("<br/>", "\n", $value);
3867                         print "</style>";
3868                 }
3869
3870         }
3871
3872         function rewrite_urls($html) {
3873                 libxml_use_internal_errors(true);
3874
3875                 $charset_hack = '<head>
3876                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
3877                 </head>';
3878
3879                 $doc = new DOMDocument();
3880                 $doc->loadHTML($charset_hack . $html);
3881                 $xpath = new DOMXPath($doc);
3882
3883                 $entries = $xpath->query('//*/text()');
3884
3885                 foreach ($entries as $entry) {
3886                         if (strstr($entry->wholeText, "://") !== false) {
3887                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
3888                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
3889
3890                                 if ($text != $entry->wholeText) {
3891                                         $cdoc = new DOMDocument();
3892                                         $cdoc->loadHTML($charset_hack . $text);
3893
3894
3895                                         foreach ($cdoc->childNodes as $cnode) {
3896                                                 $cnode = $doc->importNode($cnode, true);
3897
3898                                                 if ($cnode) {
3899                                                         $entry->parentNode->insertBefore($cnode);
3900                                                 }
3901                                         }
3902
3903                                         $entry->parentNode->removeChild($entry);
3904
3905                                 }
3906                         }
3907                 }
3908
3909                 $node = $doc->getElementsByTagName('body')->item(0);
3910
3911                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
3912                 if ($node)
3913                         return $doc->saveXML($node);
3914                 else
3915                         return $html;
3916         }
3917
3918         function filter_to_sql($link, $filter, $owner_uid) {
3919                 $query = array();
3920
3921                 if (DB_TYPE == "pgsql")
3922                         $reg_qpart = "~";
3923                 else
3924                         $reg_qpart = "REGEXP";
3925
3926                 foreach ($filter["rules"] AS $rule) {
3927                         $regexp_valid = preg_match('/' . $rule['reg_exp'] . '/',
3928                                 $rule['reg_exp']) !== FALSE;
3929
3930                         if ($regexp_valid) {
3931
3932                                 $rule['reg_exp'] = db_escape_string($link, $rule['reg_exp']);
3933
3934                                         switch ($rule["type"]) {
3935                                         case "title":
3936                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3937                                                         $rule['reg_exp'] . "')";
3938                                                 break;
3939                                         case "content":
3940                                                 $qpart = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
3941                                                         $rule['reg_exp'] . "')";
3942                                                 break;
3943                                         case "both":
3944                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3945                                                         $rule['reg_exp'] . "') OR LOWER(" .
3946                                                         "ttrss_entries.content) $reg_qpart LOWER('" . $rule['reg_exp'] . "')";
3947                                                 break;
3948                                         case "tag":
3949                                                 $qpart = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
3950                                                         $rule['reg_exp'] . "')";
3951                                                 break;
3952                                         case "link":
3953                                                 $qpart = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
3954                                                         $rule['reg_exp'] . "')";
3955                                                 break;
3956                                         case "author":
3957                                                 $qpart = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
3958                                                         $rule['reg_exp'] . "')";
3959                                                 break;
3960                                 }
3961
3962                                 if (isset($rule['inverse'])) $qpart = "NOT ($qpart)";
3963
3964                                 if (isset($rule["feed_id"]) && $rule["feed_id"] > 0) {
3965                                         $qpart .= " AND feed_id = " . db_escape_string($link, $rule["feed_id"]);
3966                                 }
3967
3968                                 if (isset($rule["cat_id"])) {
3969
3970                                         if ($rule["cat_id"] > 0) {
3971                                                 $children = getChildCategories($link, $rule["cat_id"], $owner_uid);
3972                                                 array_push($children, $rule["cat_id"]);
3973
3974                                                 $children = join(",", $children);
3975
3976                                                 $cat_qpart = "cat_id IN ($children)";
3977                                         } else {
3978                                                 $cat_qpart = "cat_id IS NULL";
3979                                         }
3980
3981                                         $qpart .= " AND $cat_qpart";
3982                                 }
3983
3984                                 array_push($query, "($qpart)");
3985
3986                         }
3987                 }
3988
3989                 if (count($query) > 0) {
3990                         $fullquery = "(" . join($filter["match_any_rule"] ? "OR" : "AND", $query) . ")";
3991                 } else {
3992                         $fullquery = "(false)";
3993                 }
3994
3995                 if ($filter['inverse']) $fullquery = "(NOT $fullquery)";
3996
3997                 return $fullquery;
3998         }
3999
4000         if (!function_exists('gzdecode')) {
4001                 function gzdecode($string) { // no support for 2nd argument
4002                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
4003                                 base64_encode($string));
4004                 }
4005         }
4006
4007         function get_random_bytes($length) {
4008                 if (function_exists('openssl_random_pseudo_bytes')) {
4009                         return openssl_random_pseudo_bytes($length);
4010                 } else {
4011                         $output = "";
4012
4013                         for ($i = 0; $i < $length; $i++)
4014                                 $output .= chr(mt_rand(0, 255));
4015
4016                         return $output;
4017                 }
4018         }
4019
4020         function read_stdin() {
4021                 $fp = fopen("php://stdin", "r");
4022
4023                 if ($fp) {
4024                         $line = trim(fgets($fp));
4025                         fclose($fp);
4026                         return $line;
4027                 }
4028
4029                 return null;
4030         }
4031
4032         function tmpdirname($path, $prefix) {
4033                 // Use PHP's tmpfile function to create a temporary
4034                 // directory name. Delete the file and keep the name.
4035                 $tempname = tempnam($path,$prefix);
4036                 if (!$tempname)
4037                         return false;
4038
4039                 if (!unlink($tempname))
4040                         return false;
4041
4042        return $tempname;
4043         }
4044
4045         function getFeedCategory($link, $feed) {
4046                 $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
4047                         WHERE id = '$feed'");
4048
4049                 if (db_num_rows($result) > 0) {
4050                         return db_fetch_result($result, 0, "cat_id");
4051                 } else {
4052                         return false;
4053                 }
4054
4055         }
4056
4057         function implements_interface($class, $interface) {
4058                 return in_array($interface, class_implements($class));
4059         }
4060
4061         function geturl($url){
4062
4063                 (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');
4064
4065                 $curl = curl_init();
4066                 $header[0] = "Accept: text/xml,application/xml,application/xhtml+xml,";
4067                 $header[0] .= "text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5";
4068                 $header[] = "Cache-Control: max-age=0";
4069                 $header[] = "Connection: keep-alive";
4070                 $header[] = "Keep-Alive: 300";
4071                 $header[] = "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7";
4072                 $header[] = "Accept-Language: en-us,en;q=0.5";
4073                 $header[] = "Pragma: ";
4074
4075                 curl_setopt($curl, CURLOPT_URL, $url);
4076                 curl_setopt($curl, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20100101 Firefox/5.0 Firefox/5.0');
4077                 curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
4078                 curl_setopt($curl, CURLOPT_HEADER, true);
4079                 curl_setopt($curl, CURLOPT_REFERER, $url);
4080                 curl_setopt($curl, CURLOPT_ENCODING, 'gzip,deflate');
4081                 curl_setopt($curl, CURLOPT_AUTOREFERER, true);
4082                 curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
4083                 //curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); //CURLOPT_FOLLOWLOCATION Disabled...
4084                 curl_setopt($curl, CURLOPT_TIMEOUT, 60);
4085
4086                 $html = curl_exec($curl);
4087
4088                 $status = curl_getinfo($curl);
4089                 curl_close($curl);
4090
4091                 if($status['http_code']!=200){
4092                         if($status['http_code'] == 301 || $status['http_code'] == 302) {
4093                                 list($header) = explode("\r\n\r\n", $html, 2);
4094                                 $matches = array();
4095                                 preg_match("/(Location:|URI:)[^(\n)]*/", $header, $matches);
4096                                 $url = trim(str_replace($matches[1],"",$matches[0]));
4097                                 $url_parsed = parse_url($url);
4098                                 return (isset($url_parsed))? geturl($url, $referer):'';
4099                         }
4100                         $oline='';
4101                         foreach($status as $key=>$eline){$oline.='['.$key.']'.$eline.' ';}
4102                         $line =$oline." \r\n ".$url."\r\n-----------------\r\n";
4103 #                       $handle = @fopen('./curl.error.log', 'a');
4104 #                       fwrite($handle, $line);
4105                         return FALSE;
4106                 }
4107                 return $url;
4108         }
4109
4110         function get_minified_js($files) {
4111                 require_once 'lib/jshrink/Minifier.php';
4112
4113                 $rv = '';
4114
4115                 foreach ($files as $js) {
4116                         if (!isset($_GET['debug'])) {
4117                                 $cached_file = CACHE_DIR . "/js/$js.js";
4118
4119                                 if (file_exists($cached_file) &&
4120                                                 is_readable($cached_file) &&
4121                                                 filemtime($cached_file) >= filemtime("js/$js.js")) {
4122
4123                                         $rv .= file_get_contents($cached_file);
4124
4125                                 } else {
4126                                         $minified = JShrink\Minifier::minify(file_get_contents("js/$js.js"));
4127                                         file_put_contents($cached_file, $minified);
4128                                         $rv .= $minified;
4129                                 }
4130                         } else {
4131                                 $rv .= file_get_contents("js/$js.js");
4132                         }
4133                 }
4134
4135                 return $rv;
4136         }
4137
4138         function stylesheet_tag($filename) {
4139                 $timestamp = filemtime($filename);
4140
4141                 echo "<link rel=\"stylesheet\" type=\"text/css\" href=\"$filename?$timestamp\"/>\n";
4142         }
4143
4144         function javascript_tag($filename) {
4145                 $query = "";
4146
4147                 if (!(strpos($filename, "?") === FALSE)) {
4148                         $query = substr($filename, strpos($filename, "?")+1);
4149                         $filename = substr($filename, 0, strpos($filename, "?"));
4150                 }
4151
4152                 $timestamp = filemtime($filename);
4153
4154                 if ($query) $timestamp .= "&$query";
4155
4156                 echo "<script type=\"text/javascript\" charset=\"utf-8\" src=\"$filename?$timestamp\"></script>\n";
4157         }
4158
4159         function calculate_dep_timestamp() {
4160                 $files = array_merge(glob("js/*.js"), glob("*.css"));
4161
4162                 $max_ts = -1;
4163
4164                 foreach ($files as $file) {
4165                         if (filemtime($file) > $max_ts) $max_ts = filemtime($file);
4166                 }
4167
4168                 return $max_ts;
4169         }
4170
4171         function T_js_decl($s1, $s2) {
4172                 if ($s1 && $s2) {
4173                         $s1 = preg_replace("/\n/", "", $s1);
4174                         $s2 = preg_replace("/\n/", "", $s2);
4175
4176                         $s1 = preg_replace("/\"/", "\\\"", $s1);
4177                         $s2 = preg_replace("/\"/", "\\\"", $s2);
4178
4179                         return "T_messages[\"$s1\"] = \"$s2\";\n";
4180                 }
4181         }
4182
4183         function init_js_translations() {
4184
4185         print 'var T_messages = new Object();
4186
4187                 function __(msg) {
4188                         if (T_messages[msg]) {
4189                                 return T_messages[msg];
4190                         } else {
4191                                 return msg;
4192                         }
4193                 }
4194
4195                 function ngettext(msg1, msg2, n) {
4196                         return (parseInt(n) > 1) ? msg2 : msg1;
4197                 }';
4198
4199                 $l10n = _get_reader();
4200
4201                 for ($i = 0; $i < $l10n->total; $i++) {
4202                         $orig = $l10n->get_original_string($i);
4203                         $translation = __($orig);
4204
4205                         print T_js_decl($orig, $translation);
4206                 }
4207         }
4208
4209         function label_to_feed_id($label) {
4210                 return LABEL_BASE_INDEX - 1 - abs($label);
4211         }
4212
4213         function feed_to_label_id($feed) {
4214                 return LABEL_BASE_INDEX - 1 + abs($feed);
4215         }
4216
4217 ?>