include/functions.php

   1 <?php
   2         define('EXPECTED_CONFIG_VERSION', 26);
   3         define('SCHEMA_VERSION', 102);
   4
   5         $fetch_last_error = false;
   6         $pluginhost = false;
   7
   8         function __autoload($class) {
   9                 $class_file = str_replace("_", "/", strtolower(basename($class)));
  10
  11                 $file = dirname(__FILE__)."/../classes/$class_file.php";
  12
  13                 if (file_exists($file)) {
  14                         require $file;
  15                 }
  16
  17         }
  18
  19         mb_internal_encoding("UTF-8");
  20         date_default_timezone_set('UTC');
  21         if (defined('E_DEPRECATED')) {
  22                 error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
  23         } else {
  24                 error_reporting(E_ALL & ~E_NOTICE);
  25         }
  26
  27         require_once 'config.php';
  28
  29         if (DB_TYPE == "pgsql") {
  30                 define('SUBSTRING_FOR_DATE', 'SUBSTRING_FOR_DATE');
  31         } else {
  32                 define('SUBSTRING_FOR_DATE', 'SUBSTRING');
  33         }
  34
  35         define('THEME_VERSION_REQUIRED', 1.1);
  36
  37         /**
  38          * Return available translations names.
  39          *
  40          * @access public
  41          * @return array A array of available translations.
  42          */
  43         function get_translations() {
  44                 $tr = array(
  45                                         "auto"  => "Detect automatically",
  46                                         "ca_CA" => "Català",
  47                                         "en_US" => "English",
  48                                         "es_ES" => "Español",
  49                                         "de_DE" => "Deutsch",
  50                                         "fr_FR" => "Français",
  51                                         "hu_HU" => "Magyar (Hungarian)",
  52                                         "it_IT" => "Italiano",
  53                                         "ja_JP" => "日本語 (Japanese)",
  54                                         "nb_NO" => "Norwegian bokmål",
  55                                         "pl_PL" => "Polski",
  56                                         "ru_RU" => "Русский",
  57                                         "pt_BR" => "Portuguese/Brazil",
  58                                         "zh_CN" => "Simplified Chinese");
  59
  60                 return $tr;
  61         }
  62
  63         require_once "lib/accept-to-gettext.php";
  64         require_once "lib/gettext/gettext.inc";
  65
  66
  67         function startup_gettext() {
  68
  69                 # Get locale from Accept-Language header
  70                 $lang = al2gt(array_keys(get_translations()), "text/html");
  71
  72                 if (defined('_TRANSLATION_OVERRIDE_DEFAULT')) {
  73                         $lang = _TRANSLATION_OVERRIDE_DEFAULT;
  74                 }
  75
  76                 /* In login action of mobile version */
  77                 if ($_POST["language"] && defined('MOBILE_VERSION')) {
  78                         $lang = $_POST["language"];
  79                 } else {
  80                         $lang = $_SESSION["language"];
  81                 }
  82
  83                 if ($lang) {
  84                         if (defined('LC_MESSAGES')) {
  85                                 _setlocale(LC_MESSAGES, $lang);
  86                         } else if (defined('LC_ALL')) {
  87                                 _setlocale(LC_ALL, $lang);
  88                         }
  89
  90                         if (defined('MOBILE_VERSION')) {
  91                                 _bindtextdomain("messages", "../locale");
  92                         } else {
  93                                 _bindtextdomain("messages", "locale");
  94                         }
  95
  96                         _textdomain("messages");
  97                         _bind_textdomain_codeset("messages", "UTF-8");
  98                 }
  99         }
 100
 101         startup_gettext();
 102
 103         require_once 'db-prefs.php';
 104         require_once 'version.php';
 105         require_once 'ccache.php';
 106         require_once 'labels.php';
 107
 108         ini_set('user_agent', SELF_USER_AGENT);
 109
 110         require_once 'lib/pubsubhubbub/publisher.php';
 111         require_once 'lib/htmLawed.php';
 112
 113         $tz_offset = -1;
 114         $utc_tz = new DateTimeZone('UTC');
 115         $schema_version = false;
 116
 117         /**
 118          * Print a timestamped debug message.
 119          *
 120          * @param string $msg The debug message.
 121          * @return void
 122          */
 123         function _debug($msg) {
 124                 if (defined('QUIET') && QUIET) {
 125                         return;
 126                 }
 127                 $ts = strftime("%H:%M:%S", time());
 128                 if (function_exists('posix_getpid')) {
 129                         $ts = "$ts/" . posix_getpid();
 130                 }
 131                 print "[$ts] $msg\n";
 132         } // function _debug
 133
 134         /**
 135          * Purge a feed old posts.
 136          *
 137          * @param mixed $link A database connection.
 138          * @param mixed $feed_id The id of the purged feed.
 139          * @param mixed $purge_interval Olderness of purged posts.
 140          * @param boolean $debug Set to True to enable the debug. False by default.
 141          * @access public
 142          * @return void
 143          */
 144         function purge_feed($link, $feed_id, $purge_interval, $debug = false) {
 145
 146                 if (!$purge_interval) $purge_interval = feed_purge_interval($link, $feed_id);
 147
 148                 $rows = -1;
 149
 150                 $result = db_query($link,
 151                         "SELECT owner_uid FROM ttrss_feeds WHERE id = '$feed_id'");
 152
 153                 $owner_uid = false;
 154
 155                 if (db_num_rows($result) == 1) {
 156                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 157                 }
 158
 159                 if ($purge_interval == -1 || !$purge_interval) {
 160                         if ($owner_uid) {
 161                                 ccache_update($link, $feed_id, $owner_uid);
 162                         }
 163                         return;
 164                 }
 165
 166                 if (!$owner_uid) return;
 167
 168                 if (FORCE_ARTICLE_PURGE == 0) {
 169                         $purge_unread = get_pref($link, "PURGE_UNREAD_ARTICLES",
 170                                 $owner_uid, false);
 171                 } else {
 172                         $purge_unread = true;
 173                         $purge_interval = FORCE_ARTICLE_PURGE;
 174                 }
 175
 176                 if (!$purge_unread) $query_limit = " unread = false AND ";
 177
 178                 if (DB_TYPE == "pgsql") {
 179                         $pg_version = get_pgsql_version($link);
 180
 181                         if (preg_match("/^7\./", $pg_version) || preg_match("/^8\.0/", $pg_version)) {
 182
 183                                 $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 184                                         ttrss_entries.id = ref_id AND
 185                                         marked = false AND
 186                                         feed_id = '$feed_id' AND
 187                                         $query_limit
 188                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 189
 190                         } else {
 191
 192                                 $result = db_query($link, "DELETE FROM ttrss_user_entries
 193                                         USING ttrss_entries
 194                                         WHERE ttrss_entries.id = ref_id AND
 195                                         marked = false AND
 196                                         feed_id = '$feed_id' AND
 197                                         $query_limit
 198                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 199                         }
 200
 201                         $rows = pg_affected_rows($result);
 202
 203                 } else {
 204
 205 /*                      $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 206                                 marked = false AND feed_id = '$feed_id' AND
 207                                 (SELECT date_updated FROM ttrss_entries WHERE
 208                                         id = ref_id) < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)"); */
 209
 210                         $result = db_query($link, "DELETE FROM ttrss_user_entries
 211                                 USING ttrss_user_entries, ttrss_entries
 212                                 WHERE ttrss_entries.id = ref_id AND
 213                                 marked = false AND
 214                                 feed_id = '$feed_id' AND
 215                                 $query_limit
 216                                 ttrss_entries.date_updated < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)");
 217
 218                         $rows = mysql_affected_rows($link);
 219
 220                 }
 221
 222                 ccache_update($link, $feed_id, $owner_uid);
 223
 224                 if ($debug) {
 225                         _debug("Purged feed $feed_id ($purge_interval): deleted $rows articles");
 226                 }
 227         } // function purge_feed
 228
 229         function feed_purge_interval($link, $feed_id) {
 230
 231                 $result = db_query($link, "SELECT purge_interval, owner_uid FROM ttrss_feeds
 232                         WHERE id = '$feed_id'");
 233
 234                 if (db_num_rows($result) == 1) {
 235                         $purge_interval = db_fetch_result($result, 0, "purge_interval");
 236                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 237
 238                         if ($purge_interval == 0) $purge_interval = get_pref($link,
 239                                 'PURGE_OLD_DAYS', $owner_uid);
 240
 241                         return $purge_interval;
 242
 243                 } else {
 244                         return -1;
 245                 }
 246         }
 247
 248         function purge_orphans($link, $do_output = false) {
 249
 250                 // purge orphaned posts in main content table
 251                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
 252                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
 253
 254                 if ($do_output) {
 255                         $rows = db_affected_rows($link, $result);
 256                         _debug("Purged $rows orphaned posts.");
 257                 }
 258         }
 259
 260         function get_feed_update_interval($link, $feed_id) {
 261                 $result = db_query($link, "SELECT owner_uid, update_interval FROM
 262                         ttrss_feeds WHERE id = '$feed_id'");
 263
 264                 if (db_num_rows($result) == 1) {
 265                         $update_interval = db_fetch_result($result, 0, "update_interval");
 266                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 267
 268                         if ($update_interval != 0) {
 269                                 return $update_interval;
 270                         } else {
 271                                 return get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $owner_uid, false);
 272                         }
 273
 274                 } else {
 275                         return -1;
 276                 }
 277         }
 278
 279         function fetch_file_contents($url, $type = false, $login = false, $pass = false, $post_query = false) {
 280                 $login = urlencode($login);
 281                 $pass = urlencode($pass);
 282
 283                 global $fetch_last_error;
 284
 285                 if (function_exists('curl_init') && !ini_get("open_basedir")) {
 286                         $ch = curl_init($url);
 287
 288                         curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 15);
 289                         curl_setopt($ch, CURLOPT_TIMEOUT, 45);
 290                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
 291                         curl_setopt($ch, CURLOPT_MAXREDIRS, 20);
 292                         curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
 293                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 294                         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 295                         curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 296                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 297                         curl_setopt($ch, CURLOPT_ENCODING , "gzip");
 298
 299                         if ($post_query) {
 300                                 curl_setopt($ch, CURLOPT_POST, true);
 301                                 curl_setopt($ch, CURLOPT_POSTFIELDS, $post_query);
 302                         }
 303
 304                         if ($login && $pass)
 305                                 curl_setopt($ch, CURLOPT_USERPWD, "$login:$pass");
 306
 307                         $contents = @curl_exec($ch);
 308
 309                         if ($contents === false) {
 310                                 $fetch_last_error = curl_error($ch);
 311                                 curl_close($ch);
 312                                 return false;
 313                         }
 314
 315                         $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 316                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 317                         curl_close($ch);
 318
 319                         if ($http_code != 200 || $type && strpos($content_type, "$type") === false) {
 320                                 return false;
 321                         }
 322
 323                         return $contents;
 324                 } else {
 325                         if ($login && $pass ){
 326                                 $url_parts = array();
 327
 328                                 preg_match("/(^[^:]*):\/\/(.*)/", $url, $url_parts);
 329
 330                                 if ($url_parts[1] && $url_parts[2]) {
 331                                         $url = $url_parts[1] . "://$login:$pass@" . $url_parts[2];
 332                                 }
 333                         }
 334
 335                         $data = @file_get_contents($url);
 336
 337                         if (!$data && function_exists('error_get_last')) {
 338                                 $error = error_get_last();
 339                                 $fetch_last_error = $error["message"];
 340                         }
 341                         return $data;
 342                 }
 343
 344         }
 345
 346         /**
 347          * Try to determine the favicon URL for a feed.
 348          * adapted from wordpress favicon plugin by Jeff Minard (http://thecodepro.com/)
 349          * http://dev.wp-plugins.org/file/favatars/trunk/favatars.php
 350          *
 351          * @param string $url A feed or page URL
 352          * @access public
 353          * @return mixed The favicon URL, or false if none was found.
 354          */
 355         function get_favicon_url($url) {
 356
 357                 $favicon_url = false;
 358
 359                 if ($html = @fetch_file_contents($url)) {
 360
 361                         libxml_use_internal_errors(true);
 362
 363                         $doc = new DOMDocument();
 364                         $doc->loadHTML($html);
 365                         $xpath = new DOMXPath($doc);
 366
 367                         $base = $xpath->query('/html/head/base');
 368                         foreach ($base as $b) {
 369                                 $url = $b->getAttribute("href");
 370                                 break;
 371                         }
 372
 373                         $entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon"]');
 374                         if (count($entries) > 0) {
 375                                 foreach ($entries as $entry) {
 376                                         $favicon_url = rewrite_relative_url($url, $entry->getAttribute("href"));
 377                                         break;
 378                                 }
 379                         }
 380                 }
 381
 382                 if (!$favicon_url)
 383                         $favicon_url = rewrite_relative_url($url, "/favicon.ico");
 384
 385                 return $favicon_url;
 386         } // function get_favicon_url
 387
 388         function check_feed_favicon($site_url, $feed, $link) {
 389 #               print "FAVICON [$site_url]: $favicon_url\n";
 390
 391                 $icon_file = ICONS_DIR . "/$feed.ico";
 392
 393                 if (!file_exists($icon_file)) {
 394                         $favicon_url = get_favicon_url($site_url);
 395
 396                         if ($favicon_url) {
 397                                 // Limiting to "image" type misses those served with text/plain
 398                                 $contents = fetch_file_contents($favicon_url); // , "image");
 399
 400                                 if ($contents) {
 401                                         // Crude image type matching.
 402                                         // Patterns gleaned from the file(1) source code.
 403                                         if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
 404                                                 // 0       string  \000\000\001\000        MS Windows icon resource
 405                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
 406                                         }
 407                                         elseif (preg_match('/^GIF8/', $contents)) {
 408                                                 // 0       string          GIF8            GIF image data
 409                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
 410                                         }
 411                                         elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
 412                                                 // 0       string          \x89PNG\x0d\x0a\x1a\x0a         PNG image data
 413                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
 414                                         }
 415                                         elseif (preg_match('/^\xff\xd8/', $contents)) {
 416                                                 // 0       beshort         0xffd8          JPEG image data
 417                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
 418                                         }
 419                                         else {
 420                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
 421                                                 $contents = "";
 422                                         }
 423                                 }
 424
 425                                 if ($contents) {
 426                                         $fp = @fopen($icon_file, "w");
 427
 428                                         if ($fp) {
 429                                                 fwrite($fp, $contents);
 430                                                 fclose($fp);
 431                                                 chmod($icon_file, 0644);
 432                                         }
 433                                 }
 434                         }
 435                 }
 436         }
 437
 438         function print_select($id, $default, $values, $attributes = "") {
 439                 print "<select name=\"$id\" id=\"$id\" $attributes>";
 440                 foreach ($values as $v) {
 441                         if ($v == $default)
 442                                 $sel = "selected=\"1\"";
 443                          else
 444                                 $sel = "";
 445
 446                         print "<option value=\"$v\" $sel>$v</option>";
 447                 }
 448                 print "</select>";
 449         }
 450
 451         function print_select_hash($id, $default, $values, $attributes = "") {
 452                 print "<select name=\"$id\" id='$id' $attributes>";
 453                 foreach (array_keys($values) as $v) {
 454                         if ($v == $default)
 455                                 $sel = 'selected="selected"';
 456                          else
 457                                 $sel = "";
 458
 459                         print "<option $sel value=\"$v\">".$values[$v]."</option>";
 460                 }
 461
 462                 print "</select>";
 463         }
 464
 465         function getmicrotime() {
 466                 list($usec, $sec) = explode(" ",microtime());
 467                 return ((float)$usec + (float)$sec);
 468         }
 469
 470         function print_radio($id, $default, $true_is, $values, $attributes = "") {
 471                 foreach ($values as $v) {
 472
 473                         if ($v == $default)
 474                                 $sel = "checked";
 475                          else
 476                                 $sel = "";
 477
 478                         if ($v == $true_is) {
 479                                 $sel .= " value=\"1\"";
 480                         } else {
 481                                 $sel .= " value=\"0\"";
 482                         }
 483
 484                         print "<input class=\"noborder\" dojoType=\"dijit.form.RadioButton\"
 485                                 type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 486
 487                 }
 488         }
 489
 490         function initialize_user_prefs($link, $uid, $profile = false) {
 491
 492                 $uid = db_escape_string($uid);
 493
 494                 if (!$profile) {
 495                         $profile = "NULL";
 496                         $profile_qpart = "AND profile IS NULL";
 497                 } else {
 498                         $profile_qpart = "AND profile = '$profile'";
 499                 }
 500
 501                 if (get_schema_version($link) < 63) $profile_qpart = "";
 502
 503                 db_query($link, "BEGIN");
 504
 505                 $result = db_query($link, "SELECT pref_name,def_value FROM ttrss_prefs");
 506
 507                 $u_result = db_query($link, "SELECT pref_name
 508                         FROM ttrss_user_prefs WHERE owner_uid = '$uid' $profile_qpart");
 509
 510                 $active_prefs = array();
 511
 512                 while ($line = db_fetch_assoc($u_result)) {
 513                         array_push($active_prefs, $line["pref_name"]);
 514                 }
 515
 516                 while ($line = db_fetch_assoc($result)) {
 517                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 518 //                              print "adding " . $line["pref_name"] . "<br>";
 519
 520                                 if (get_schema_version($link) < 63) {
 521                                         db_query($link, "INSERT INTO ttrss_user_prefs
 522                                                 (owner_uid,pref_name,value) VALUES
 523                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 524
 525                                 } else {
 526                                         db_query($link, "INSERT INTO ttrss_user_prefs
 527                                                 (owner_uid,pref_name,value, profile) VALUES
 528                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."', $profile)");
 529                                 }
 530
 531                         }
 532                 }
 533
 534                 db_query($link, "COMMIT");
 535
 536         }
 537
 538         function get_ssl_certificate_id() {
 539                 if ($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"]) {
 540                         return sha1($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"] .
 541                                 $_SERVER["REDIRECT_SSL_CLIENT_V_START"] .
 542                                 $_SERVER["REDIRECT_SSL_CLIENT_V_END"] .
 543                                 $_SERVER["REDIRECT_SSL_CLIENT_S_DN"]);
 544                 }
 545                 return "";
 546         }
 547
 548         function authenticate_user($link, $login, $password, $check_only = false) {
 549
 550                 if (!SINGLE_USER_MODE) {
 551
 552                         $user_id = false;
 553
 554                         global $pluginhost;
 555                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_AUTH_USER) as $plugin) {
 556
 557                                 $user_id = (int) $plugin->authenticate($login, $password);
 558
 559                                 if ($user_id) {
 560                                         $_SESSION["auth_module"] = strtolower(get_class($plugin));
 561                                         break;
 562                                 }
 563                         }
 564
 565                         if ($user_id && !$check_only) {
 566                                 $_SESSION["uid"] = $user_id;
 567
 568                                 $result = db_query($link, "SELECT login,access_level,pwd_hash FROM ttrss_users
 569                                         WHERE id = '$user_id'");
 570
 571                                 $_SESSION["name"] = db_fetch_result($result, 0, "login");
 572                                 $_SESSION["access_level"] = db_fetch_result($result, 0, "access_level");
 573                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 574
 575                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 576                                         $_SESSION["uid"]);
 577
 578                                 $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 579                                 $_SESSION["pwd_hash"] = db_fetch_result($result, 0, "pwd_hash");
 580
 581                                 $_SESSION["last_version_check"] = time();
 582
 583                                 initialize_user_prefs($link, $_SESSION["uid"]);
 584
 585                                 return true;
 586                         }
 587
 588                         return false;
 589
 590                 } else {
 591
 592                         $_SESSION["uid"] = 1;
 593                         $_SESSION["name"] = "admin";
 594                         $_SESSION["access_level"] = 10;
 595
 596                         $_SESSION["hide_hello"] = true;
 597                         $_SESSION["hide_logout"] = true;
 598
 599                         $_SESSION["auth_module"] = false;
 600
 601                         if (!$_SESSION["csrf_token"]) {
 602                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 603                         }
 604
 605                         $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 606
 607                         initialize_user_prefs($link, $_SESSION["uid"]);
 608
 609                         return true;
 610                 }
 611         }
 612
 613         function make_password($length = 8) {
 614
 615                 $password = "";
 616                 $possible = "0123456789abcdfghjkmnpqrstvwxyzABCDFGHJKMNPQRSTVWXYZ";
 617
 618         $i = 0;
 619
 620                 while ($i < $length) {
 621                         $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 622
 623                         if (!strstr($password, $char)) {
 624                                 $password .= $char;
 625                                 $i++;
 626                         }
 627                 }
 628                 return $password;
 629         }
 630
 631         // this is called after user is created to initialize default feeds, labels
 632         // or whatever else
 633
 634         // user preferences are checked on every login, not here
 635
 636         function initialize_user($link, $uid) {
 637
 638                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 639                         values ('$uid', 'Tiny Tiny RSS: New Releases',
 640                         'http://tt-rss.org/releases.rss')");
 641
 642                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 643                         values ('$uid', 'Tiny Tiny RSS: Forum',
 644                                 'http://tt-rss.org/forum/rss.php')");
 645         }
 646
 647         function logout_user() {
 648                 session_destroy();
 649                 if (isset($_COOKIE[session_name()])) {
 650                    setcookie(session_name(), '', time()-42000, '/');
 651                 }
 652         }
 653
 654         function validate_csrf($csrf_token) {
 655                 return $csrf_token == $_SESSION['csrf_token'];
 656         }
 657
 658         function validate_session($link) {
 659                 if (SINGLE_USER_MODE) return true;
 660
 661                 $check_ip = $_SESSION['ip_address'];
 662
 663                 switch (SESSION_CHECK_ADDRESS) {
 664                 case 0:
 665                         $check_ip = '';
 666                         break;
 667                 case 1:
 668                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 669                         break;
 670                 case 2:
 671                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.'));
 672                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 673                         break;
 674                 };
 675
 676                 if ($check_ip && strpos($_SERVER['REMOTE_ADDR'], $check_ip) !== 0) {
 677                         $_SESSION["login_error_msg"] =
 678                                 __("Session failed to validate (incorrect IP)");
 679                         return false;
 680                 }
 681
 682                 if ($_SESSION["ref_schema_version"] != get_schema_version($link, true))
 683                         return false;
 684
 685                 if ($_SESSION["uid"]) {
 686
 687                         $result = db_query($link,
 688                                 "SELECT pwd_hash FROM ttrss_users WHERE id = '".$_SESSION["uid"]."'");
 689
 690                         $pwd_hash = db_fetch_result($result, 0, "pwd_hash");
 691
 692                         if ($pwd_hash != $_SESSION["pwd_hash"]) {
 693                                 return false;
 694                         }
 695                 }
 696
 697 /*              if ($_SESSION["cookie_lifetime"] && $_SESSION["uid"]) {
 698
 699                         //print_r($_SESSION);
 700
 701                         if (time() > $_SESSION["cookie_lifetime"]) {
 702                                 return false;
 703                         }
 704                 } */
 705
 706                 return true;
 707         }
 708
 709         function load_user_plugins($link, $owner_uid) {
 710                 if ($owner_uid) {
 711                         $plugins = get_pref($link, "_ENABLED_PLUGINS", $owner_uid);
 712
 713                         global $pluginhost;
 714                         $pluginhost->load($plugins, $pluginhost::KIND_USER, $owner_uid);
 715
 716                         if (get_schema_version($link) > 100) {
 717                                 $pluginhost->load_data();
 718                         }
 719                 }
 720         }
 721
 722         function login_sequence($link, $login_form = 0) {
 723                 if (SINGLE_USER_MODE) {
 724                         authenticate_user($link, "admin", null);
 725                         load_user_plugins($link, $_SESSION["uid"]);
 726                 } else {
 727                         if (!$_SESSION["uid"] || !validate_session($link)) {
 728
 729                                 if (AUTH_AUTO_LOGIN && authenticate_user($link, null, null)) {
 730                                     $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 731                                 } else {
 732                                          authenticate_user($link, null, null, true);
 733                                 }
 734
 735                                 if (!$_SESSION["uid"]) render_login_form($link, $login_form);
 736
 737                         } else {
 738                                 /* bump login timestamp */
 739                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 740                                         $_SESSION["uid"]);
 741                         }
 742
 743                         if ($_SESSION["uid"] && $_SESSION["language"] && SESSION_COOKIE_LIFETIME > 0) {
 744                                 setcookie("ttrss_lang", $_SESSION["language"],
 745                                         time() + SESSION_COOKIE_LIFETIME);
 746                         }
 747
 748                         if ($_SESSION["uid"]) {
 749                                 load_user_plugins($link, $_SESSION["uid"]);
 750                         }
 751                 }
 752         }
 753
 754         function truncate_string($str, $max_len, $suffix = '&hellip;') {
 755                 if (mb_strlen($str, "utf-8") > $max_len - 3) {
 756                         return mb_substr($str, 0, $max_len, "utf-8") . $suffix;
 757                 } else {
 758                         return $str;
 759                 }
 760         }
 761
 762         function theme_image($link, $filename) {
 763                 if ($link) {
 764                         $theme_path = get_user_theme_path($link);
 765
 766                         if ($theme_path && is_file($theme_path.$filename)) {
 767                                 return $theme_path.$filename;
 768                         } else {
 769                                 return $filename;
 770                         }
 771                 } else {
 772                         return $filename;
 773                 }
 774         }
 775
 776         function get_user_theme($link) {
 777
 778                 if (get_schema_version($link) >= 63 && $_SESSION["uid"]) {
 779                         $theme_name = get_pref($link, "_THEME_ID");
 780                         if (is_dir("themes/$theme_name")) {
 781                                 return $theme_name;
 782                         } else {
 783                                 return '';
 784                         }
 785                 } else {
 786                         return '';
 787                 }
 788
 789         }
 790
 791         function get_user_theme_path($link) {
 792                 $theme_path = '';
 793
 794                 if (get_schema_version($link) >= 63 && $_SESSION["uid"]) {
 795                         $theme_name = get_pref($link, "_THEME_ID");
 796
 797                         if ($theme_name && is_dir("themes/$theme_name")) {
 798                                 $theme_path = "themes/$theme_name/";
 799                         } else {
 800                                 $theme_name = '';
 801                         }
 802                 } else {
 803                         $theme_path = '';
 804                 }
 805
 806                 if ($theme_path) {
 807                         if (is_file("$theme_path/theme.ini")) {
 808                                 $ini = parse_ini_file("$theme_path/theme.ini", true);
 809                                 if ($ini['theme']['version'] >= THEME_VERSION_REQUIRED) {
 810                                         return $theme_path;
 811                                 }
 812                         }
 813                 }
 814                 return '';
 815         }
 816
 817         function get_user_theme_options($link) {
 818                 $t = get_user_theme_path($link);
 819
 820                 if ($t) {
 821                         if (is_file("$t/theme.ini")) {
 822                                 $ini = parse_ini_file("$t/theme.ini", true);
 823                                 if ($ini['theme']['version']) {
 824                                         return $ini['theme']['options'];
 825                                 }
 826                         }
 827                 }
 828                 return '';
 829         }
 830
 831         function print_theme_includes($link) {
 832
 833                 $t = get_user_theme_path($link);
 834                 $time = time();
 835
 836                 if ($t) {
 837                         print "<link rel=\"stylesheet\" type=\"text/css\"
 838                                 href=\"$t/theme.css?$time \">";
 839                         if (file_exists("$t/theme.js")) {
 840                                 print "<script type=\"text/javascript\" src=\"$t/theme.js?$time\">
 841                                         </script>";
 842                         }
 843                 }
 844         }
 845
 846         function get_all_themes() {
 847                 $themes = glob("themes/*");
 848
 849                 asort($themes);
 850
 851                 $rv = array();
 852
 853                 foreach ($themes as $t) {
 854                         if (is_file("$t/theme.ini")) {
 855                                 $ini = parse_ini_file("$t/theme.ini", true);
 856                                 if ($ini['theme']['version'] >= THEME_VERSION_REQUIRED &&
 857                                                         !$ini['theme']['disabled']) {
 858                                         $entry = array();
 859                                         $entry["path"] = $t;
 860                                         $entry["base"] = basename($t);
 861                                         $entry["name"] = $ini['theme']['name'];
 862                                         $entry["version"] = $ini['theme']['version'];
 863                                         $entry["author"] = $ini['theme']['author'];
 864                                         $entry["options"] = $ini['theme']['options'];
 865                                         array_push($rv, $entry);
 866                                 }
 867                         }
 868                 }
 869
 870                 return $rv;
 871         }
 872
 873         function convert_timestamp($timestamp, $source_tz, $dest_tz) {
 874
 875                 try {
 876                         $source_tz = new DateTimeZone($source_tz);
 877                 } catch (Exception $e) {
 878                         $source_tz = new DateTimeZone('UTC');
 879                 }
 880
 881                 try {
 882                         $dest_tz = new DateTimeZone($dest_tz);
 883                 } catch (Exception $e) {
 884                         $dest_tz = new DateTimeZone('UTC');
 885                 }
 886
 887                 $dt = new DateTime(date('Y-m-d H:i:s', $timestamp), $source_tz);
 888                 return $dt->format('U') + $dest_tz->getOffset($dt);
 889         }
 890
 891         function make_local_datetime($link, $timestamp, $long, $owner_uid = false,
 892                                         $no_smart_dt = false) {
 893
 894                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 895                 if (!$timestamp) $timestamp = '1970-01-01 0:00';
 896
 897                 global $utc_tz;
 898                 global $tz_offset;
 899
 900                 # We store date in UTC internally
 901                 $dt = new DateTime($timestamp, $utc_tz);
 902
 903                 if ($tz_offset == -1) {
 904
 905                         $user_tz_string = get_pref($link, 'USER_TIMEZONE', $owner_uid);
 906
 907                         try {
 908                                 $user_tz = new DateTimeZone($user_tz_string);
 909                         } catch (Exception $e) {
 910                                 $user_tz = $utc_tz;
 911                         }
 912
 913                         $tz_offset = $user_tz->getOffset($dt);
 914                 }
 915
 916                 $user_timestamp = $dt->format('U') + $tz_offset;
 917
 918                 if (!$no_smart_dt) {
 919                         return smart_date_time($link, $user_timestamp,
 920                                 $tz_offset, $owner_uid);
 921                 } else {
 922                         if ($long)
 923                                 $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 924                         else
 925                                 $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 926
 927                         return date($format, $user_timestamp);
 928                 }
 929         }
 930
 931         function smart_date_time($link, $timestamp, $tz_offset = 0, $owner_uid = false) {
 932                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 933
 934                 if (date("Y.m.d", $timestamp) == date("Y.m.d", time() + $tz_offset)) {
 935                         return date("G:i", $timestamp);
 936                 } else if (date("Y", $timestamp) == date("Y", time() + $tz_offset)) {
 937                         $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 938                         return date($format, $timestamp);
 939                 } else {
 940                         $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 941                         return date($format, $timestamp);
 942                 }
 943         }
 944
 945         function sql_bool_to_bool($s) {
 946                 if ($s == "t" || $s == "1" || $s == "true") {
 947                         return true;
 948                 } else {
 949                         return false;
 950                 }
 951         }
 952
 953         function bool_to_sql_bool($s) {
 954                 if ($s) {
 955                         return "true";
 956                 } else {
 957                         return "false";
 958                 }
 959         }
 960
 961         // Session caching removed due to causing wrong redirects to upgrade
 962         // script when get_schema_version() is called on an obsolete session
 963         // created on a previous schema version.
 964         function get_schema_version($link, $nocache = false) {
 965                 global $schema_version;
 966
 967                 if (!$schema_version) {
 968                         $result = db_query($link, "SELECT schema_version FROM ttrss_version");
 969                         $version = db_fetch_result($result, 0, "schema_version");
 970                         $schema_version = $version;
 971                         return $version;
 972                 } else {
 973                         return $schema_version;
 974                 }
 975         }
 976
 977         function sanity_check($link) {
 978                 require_once 'errors.php';
 979
 980                 $error_code = 0;
 981                 $schema_version = get_schema_version($link, true);
 982
 983                 if ($schema_version != SCHEMA_VERSION) {
 984                         $error_code = 5;
 985                 }
 986
 987                 if (DB_TYPE == "mysql") {
 988                         $result = db_query($link, "SELECT true", false);
 989                         if (db_num_rows($result) != 1) {
 990                                 $error_code = 10;
 991                         }
 992                 }
 993
 994                 if (db_escape_string("testTEST") != "testTEST") {
 995                         $error_code = 12;
 996                 }
 997
 998                 return array("code" => $error_code, "message" => $ERRORS[$error_code]);
 999         }
1000
1001         function file_is_locked($filename) {
1002                 if (function_exists('flock')) {
1003                         $fp = @fopen(LOCK_DIRECTORY . "/$filename", "r");
1004                         if ($fp) {
1005                                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1006                                         flock($fp, LOCK_UN);
1007                                         fclose($fp);
1008                                         return false;
1009                                 }
1010                                 fclose($fp);
1011                                 return true;
1012                         } else {
1013                                 return false;
1014                         }
1015                 }
1016                 return true; // consider the file always locked and skip the test
1017         }
1018
1019         function make_lockfile($filename) {
1020                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
1021
1022                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1023                         if (function_exists('posix_getpid')) {
1024                                 fwrite($fp, posix_getpid() . "\n");
1025                         }
1026                         return $fp;
1027                 } else {
1028                         return false;
1029                 }
1030         }
1031
1032         function make_stampfile($filename) {
1033                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
1034
1035                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1036                         fwrite($fp, time() . "\n");
1037                         flock($fp, LOCK_UN);
1038                         fclose($fp);
1039                         return true;
1040                 } else {
1041                         return false;
1042                 }
1043         }
1044
1045         function sql_random_function() {
1046                 if (DB_TYPE == "mysql") {
1047                         return "RAND()";
1048                 } else {
1049                         return "RANDOM()";
1050                 }
1051         }
1052
1053         function catchup_feed($link, $feed, $cat_view, $owner_uid = false, $max_id = false) {
1054
1055                         if (!$owner_uid) $owner_uid = $_SESSION['uid'];
1056
1057                         //if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
1058
1059                         $ref_check_qpart = ($max_id &&
1060                                 !get_pref($link, 'REVERSE_HEADLINES')) ? "ref_id <= '$max_id'" : "true";
1061
1062                         if (is_numeric($feed)) {
1063                                 if ($cat_view) {
1064
1065                                         if ($feed >= 0) {
1066
1067                                                 if ($feed > 0) {
1068                                                         $children = getChildCategories($link, $feed, $owner_uid);
1069                                                         array_push($children, $feed);
1070
1071                                                         $children = join(",", $children);
1072
1073                                                         $cat_qpart = "cat_id IN ($children)";
1074                                                 } else {
1075                                                         $cat_qpart = "cat_id IS NULL";
1076                                                 }
1077
1078                                                 db_query($link, "UPDATE ttrss_user_entries
1079                                                         SET unread = false,last_read = NOW()
1080                                                         WHERE feed_id IN (SELECT id FROM ttrss_feeds WHERE $cat_qpart)
1081                                                         AND $ref_check_qpart
1082                                                         AND owner_uid = $owner_uid");
1083
1084                                         } else if ($feed == -2) {
1085
1086                                                 db_query($link, "UPDATE ttrss_user_entries
1087                                                         SET unread = false,last_read = NOW() WHERE (SELECT COUNT(*)
1088                                                                 FROM ttrss_user_labels2 WHERE article_id = ref_id) > 0
1089                                                                 AND $ref_check_qpart
1090                                                                 AND unread = true AND owner_uid = $owner_uid");
1091                                         }
1092
1093                                 } else if ($feed > 0) {
1094
1095                                         db_query($link, "UPDATE ttrss_user_entries
1096                                                         SET unread = false,last_read = NOW()
1097                                                         WHERE feed_id = '$feed'
1098                                                         AND $ref_check_qpart
1099                                                         AND owner_uid = $owner_uid");
1100
1101                                 } else if ($feed < 0 && $feed > -10) { // special, like starred
1102
1103                                         if ($feed == -1) {
1104                                                 db_query($link, "UPDATE ttrss_user_entries
1105                                                         SET unread = false,last_read = NOW()
1106                                                         WHERE marked = true
1107                                                         AND $ref_check_qpart
1108                                                         AND owner_uid = $owner_uid");
1109                                         }
1110
1111                                         if ($feed == -2) {
1112                                                 db_query($link, "UPDATE ttrss_user_entries
1113                                                         SET unread = false,last_read = NOW()
1114                                                         WHERE published = true
1115                                                         AND $ref_check_qpart
1116                                                         AND owner_uid = $owner_uid");
1117                                         }
1118
1119                                         if ($feed == -3) {
1120
1121                                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE");
1122
1123                                                 if (DB_TYPE == "pgsql") {
1124                                                         $match_part = "updated > NOW() - INTERVAL '$intl hour' ";
1125                                                 } else {
1126                                                         $match_part = "updated > DATE_SUB(NOW(),
1127                                                                 INTERVAL $intl HOUR) ";
1128                                                 }
1129
1130                                                 $result = db_query($link, "SELECT id FROM ttrss_entries,
1131                                                         ttrss_user_entries WHERE $match_part AND
1132                                                         unread = true AND
1133                                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
1134                                                         owner_uid = $owner_uid");
1135
1136                                                 $affected_ids = array();
1137
1138                                                 while ($line = db_fetch_assoc($result)) {
1139                                                         array_push($affected_ids, $line["id"]);
1140                                                 }
1141
1142                                                 catchupArticlesById($link, $affected_ids, 0);
1143                                         }
1144
1145                                         if ($feed == -4) {
1146                                                 db_query($link, "UPDATE ttrss_user_entries
1147                                                         SET unread = false,last_read = NOW()
1148                                                         WHERE $ref_check_qpart AND owner_uid = $owner_uid");
1149                                         }
1150
1151                                 } else if ($feed < -10) { // label
1152
1153                                         $label_id = -$feed - 11;
1154
1155                                         db_query($link, "UPDATE ttrss_user_entries, ttrss_user_labels2
1156                                                 SET unread = false, last_read = NOW()
1157                                                         WHERE label_id = '$label_id' AND unread = true
1158                                                         AND $ref_check_qpart
1159                                                         AND owner_uid = '$owner_uid' AND ref_id = article_id");
1160
1161                                 }
1162
1163                                 ccache_update($link, $feed, $owner_uid, $cat_view);
1164
1165                         } else { // tag
1166                                 db_query($link, "BEGIN");
1167
1168                                 $tag_name = db_escape_string($feed);
1169
1170                                 $result = db_query($link, "SELECT post_int_id FROM ttrss_tags
1171                                         WHERE tag_name = '$tag_name' AND owner_uid = $owner_uid");
1172
1173                                 while ($line = db_fetch_assoc($result)) {
1174                                         db_query($link, "UPDATE ttrss_user_entries SET
1175                                                 unread = false, last_read = NOW()
1176                                                 WHERE $ref_check_qpart AND int_id = " . $line["post_int_id"]);
1177                                 }
1178                                 db_query($link, "COMMIT");
1179                         }
1180         }
1181
1182         function getAllCounters($link, $omode = "flc", $active_feed = false) {
1183
1184                 if (!$omode) $omode = "flc";
1185
1186                 $data = getGlobalCounters($link);
1187
1188                 $data = array_merge($data, getVirtCounters($link));
1189
1190                 if (strchr($omode, "l")) $data = array_merge($data, getLabelCounters($link));
1191                 if (strchr($omode, "f")) $data = array_merge($data, getFeedCounters($link, $active_feed));
1192                 if (strchr($omode, "t")) $data = array_merge($data, getTagCounters($link));
1193                 if (strchr($omode, "c")) $data = array_merge($data, getCategoryCounters($link));
1194
1195                 return $data;
1196         }
1197
1198         function getCategoryTitle($link, $cat_id) {
1199
1200                 if ($cat_id == -1) {
1201                         return __("Special");
1202                 } else if ($cat_id == -2) {
1203                         return __("Labels");
1204                 } else {
1205
1206                         $result = db_query($link, "SELECT title FROM ttrss_feed_categories WHERE
1207                                 id = '$cat_id'");
1208
1209                         if (db_num_rows($result) == 1) {
1210                                 return db_fetch_result($result, 0, "title");
1211                         } else {
1212                                 return __("Uncategorized");
1213                         }
1214                 }
1215         }
1216
1217
1218         function getCategoryCounters($link) {
1219                 $ret_arr = array();
1220
1221                 /* Labels category */
1222
1223                 $cv = array("id" => -2, "kind" => "cat",
1224                         "counter" => getCategoryUnread($link, -2));
1225
1226                 array_push($ret_arr, $cv);
1227
1228                 $result = db_query($link, "SELECT id AS cat_id, value AS unread,
1229                         (SELECT COUNT(id) FROM ttrss_feed_categories AS c2
1230                                 WHERE c2.parent_cat = ttrss_feed_categories.id) AS num_children
1231                         FROM ttrss_feed_categories, ttrss_cat_counters_cache
1232                         WHERE ttrss_cat_counters_cache.feed_id = id AND
1233                         ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid AND
1234                         ttrss_feed_categories.owner_uid = " . $_SESSION["uid"]);
1235
1236                 while ($line = db_fetch_assoc($result)) {
1237                         $line["cat_id"] = (int) $line["cat_id"];
1238
1239                         if ($line["num_children"] > 0) {
1240                                 $child_counter = getCategoryChildrenUnread($link, $line["cat_id"], $_SESSION["uid"]);
1241                         } else {
1242                                 $child_counter = 0;
1243                         }
1244
1245                         $cv = array("id" => $line["cat_id"], "kind" => "cat",
1246                                 "counter" => $line["unread"] + $child_counter);
1247
1248                         array_push($ret_arr, $cv);
1249                 }
1250
1251                 /* Special case: NULL category doesn't actually exist in the DB */
1252
1253                 $cv = array("id" => 0, "kind" => "cat",
1254                         "counter" => (int) ccache_find($link, 0, $_SESSION["uid"], true));
1255
1256                 array_push($ret_arr, $cv);
1257
1258                 return $ret_arr;
1259         }
1260
1261         // only accepts real cats (>= 0)
1262         function getCategoryChildrenUnread($link, $cat, $owner_uid = false) {
1263                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1264
1265                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories WHERE parent_cat = '$cat'
1266                                 AND owner_uid = $owner_uid");
1267
1268                 $unread = 0;
1269
1270                 while ($line = db_fetch_assoc($result)) {
1271                         $unread += getCategoryUnread($link, $line["id"], $owner_uid);
1272                         $unread += getCategoryChildrenUnread($link, $line["id"], $owner_uid);
1273                 }
1274
1275                 return $unread;
1276         }
1277
1278         function getCategoryUnread($link, $cat, $owner_uid = false) {
1279
1280                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1281
1282                 if ($cat >= 0) {
1283
1284                         if ($cat != 0) {
1285                                 $cat_query = "cat_id = '$cat'";
1286                         } else {
1287                                 $cat_query = "cat_id IS NULL";
1288                         }
1289
1290                         $result = db_query($link, "SELECT id FROM ttrss_feeds WHERE $cat_query
1291                                         AND owner_uid = " . $owner_uid);
1292
1293                         $cat_feeds = array();
1294                         while ($line = db_fetch_assoc($result)) {
1295                                 array_push($cat_feeds, "feed_id = " . $line["id"]);
1296                         }
1297
1298                         if (count($cat_feeds) == 0) return 0;
1299
1300                         $match_part = implode(" OR ", $cat_feeds);
1301
1302                         $result = db_query($link, "SELECT COUNT(int_id) AS unread
1303                                 FROM ttrss_user_entries
1304                                 WHERE   unread = true AND ($match_part)
1305                                 AND owner_uid = " . $owner_uid);
1306
1307                         $unread = 0;
1308
1309                         # this needs to be rewritten
1310                         while ($line = db_fetch_assoc($result)) {
1311                                 $unread += $line["unread"];
1312                         }
1313
1314                         return $unread;
1315                 } else if ($cat == -1) {
1316                         return getFeedUnread($link, -1) + getFeedUnread($link, -2) + getFeedUnread($link, -3) + getFeedUnread($link, 0);
1317                 } else if ($cat == -2) {
1318
1319                         $result = db_query($link, "
1320                                 SELECT COUNT(unread) AS unread FROM
1321                                         ttrss_user_entries, ttrss_user_labels2
1322                                 WHERE article_id = ref_id AND unread = true
1323                                         AND ttrss_user_entries.owner_uid = '$owner_uid'");
1324
1325                         $unread = db_fetch_result($result, 0, "unread");
1326
1327                         return $unread;
1328
1329                 }
1330         }
1331
1332         function getFeedUnread($link, $feed, $is_cat = false) {
1333                 return getFeedArticles($link, $feed, $is_cat, true, $_SESSION["uid"]);
1334         }
1335
1336         function getLabelUnread($link, $label_id, $owner_uid = false) {
1337                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1338
1339                 $result = db_query($link, "SELECT COUNT(ref_id) AS unread FROM ttrss_user_entries, ttrss_user_labels2
1340                         WHERE owner_uid = '$owner_uid' AND unread = true AND label_id = '$label_id' AND article_id = ref_id");
1341
1342                 if (db_num_rows($result) != 0) {
1343                         return db_fetch_result($result, 0, "unread");
1344                 } else {
1345                         return 0;
1346                 }
1347         }
1348
1349         function getFeedArticles($link, $feed, $is_cat = false, $unread_only = false,
1350                 $owner_uid = false) {
1351
1352                 $n_feed = (int) $feed;
1353                 $need_entries = false;
1354
1355                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1356
1357                 if ($unread_only) {
1358                         $unread_qpart = "unread = true";
1359                 } else {
1360                         $unread_qpart = "true";
1361                 }
1362
1363                 if ($is_cat) {
1364                         return getCategoryUnread($link, $n_feed, $owner_uid);
1365                 } else if ($n_feed == -6) {
1366                         return 0;
1367                 } else if ($feed != "0" && $n_feed == 0) {
1368
1369                         $feed = db_escape_string($feed);
1370
1371                         $result = db_query($link, "SELECT SUM((SELECT COUNT(int_id)
1372                                 FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1373                                         AND ref_id = id AND $unread_qpart)) AS count FROM ttrss_tags
1374                                 WHERE owner_uid = $owner_uid AND tag_name = '$feed'");
1375                         return db_fetch_result($result, 0, "count");
1376
1377                 } else if ($n_feed == -1) {
1378                         $match_part = "marked = true";
1379                 } else if ($n_feed == -2) {
1380                         $match_part = "published = true";
1381                 } else if ($n_feed == -3) {
1382                         $match_part = "unread = true AND score >= 0";
1383
1384                         $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
1385
1386                         if (DB_TYPE == "pgsql") {
1387                                 $match_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
1388                         } else {
1389                                 $match_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
1390                         }
1391
1392                         $need_entries = true;
1393
1394                 } else if ($n_feed == -4) {
1395                         $match_part = "true";
1396                 } else if ($n_feed >= 0) {
1397
1398                         if ($n_feed != 0) {
1399                                 $match_part = "feed_id = '$n_feed'";
1400                         } else {
1401                                 $match_part = "feed_id IS NULL";
1402                         }
1403
1404                 } else if ($feed < -10) {
1405
1406                         $label_id = -$feed - 11;
1407
1408                         return getLabelUnread($link, $label_id, $owner_uid);
1409
1410                 }
1411
1412                 if ($match_part) {
1413
1414                         if ($need_entries) {
1415                                 $from_qpart = "ttrss_user_entries,ttrss_entries";
1416                                 $from_where = "ttrss_entries.id = ttrss_user_entries.ref_id AND";
1417                         } else {
1418                                 $from_qpart = "ttrss_user_entries";
1419                         }
1420
1421                         $query = "SELECT count(int_id) AS unread
1422                                 FROM $from_qpart WHERE
1423                                 $unread_qpart AND $from_where ($match_part) AND ttrss_user_entries.owner_uid = $owner_uid";
1424
1425                         //echo "[$feed/$query]\n";
1426
1427                         $result = db_query($link, $query);
1428
1429                 } else {
1430
1431                         $result = db_query($link, "SELECT COUNT(post_int_id) AS unread
1432                                 FROM ttrss_tags,ttrss_user_entries,ttrss_entries
1433                                 WHERE tag_name = '$feed' AND post_int_id = int_id AND ref_id = ttrss_entries.id
1434                                 AND $unread_qpart AND ttrss_tags.owner_uid = " . $owner_uid);
1435                 }
1436
1437                 $unread = db_fetch_result($result, 0, "unread");
1438
1439                 return $unread;
1440         }
1441
1442         function getGlobalUnread($link, $user_id = false) {
1443
1444                 if (!$user_id) {
1445                         $user_id = $_SESSION["uid"];
1446                 }
1447
1448                 $result = db_query($link, "SELECT SUM(value) AS c_id FROM ttrss_counters_cache
1449                         WHERE owner_uid = '$user_id' AND feed_id > 0");
1450
1451                 $c_id = db_fetch_result($result, 0, "c_id");
1452
1453                 return $c_id;
1454         }
1455
1456         function getGlobalCounters($link, $global_unread = -1) {
1457                 $ret_arr = array();
1458
1459                 if ($global_unread == -1) {
1460                         $global_unread = getGlobalUnread($link);
1461                 }
1462
1463                 $cv = array("id" => "global-unread",
1464                         "counter" => (int) $global_unread);
1465
1466                 array_push($ret_arr, $cv);
1467
1468                 $result = db_query($link, "SELECT COUNT(id) AS fn FROM
1469                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1470
1471                 $subscribed_feeds = db_fetch_result($result, 0, "fn");
1472
1473                 $cv = array("id" => "subscribed-feeds",
1474                         "counter" => (int) $subscribed_feeds);
1475
1476                 array_push($ret_arr, $cv);
1477
1478                 return $ret_arr;
1479         }
1480
1481         function getTagCounters($link) {
1482
1483                 $ret_arr = array();
1484
1485                 $result = db_query($link, "SELECT tag_name,SUM((SELECT COUNT(int_id)
1486                         FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1487                                 AND ref_id = id AND unread = true)) AS count FROM ttrss_tags
1488                                 WHERE owner_uid = ".$_SESSION['uid']." GROUP BY tag_name
1489                                 ORDER BY count DESC LIMIT 55");
1490
1491                 $tags = array();
1492
1493                 while ($line = db_fetch_assoc($result)) {
1494                         $tags[$line["tag_name"]] += $line["count"];
1495                 }
1496
1497                 foreach (array_keys($tags) as $tag) {
1498                         $unread = $tags[$tag];
1499                         $tag = htmlspecialchars($tag);
1500
1501                         $cv = array("id" => $tag,
1502                                 "kind" => "tag",
1503                                 "counter" => $unread);
1504
1505                         array_push($ret_arr, $cv);
1506                 }
1507
1508                 return $ret_arr;
1509         }
1510
1511         function getVirtCounters($link) {
1512
1513                 $ret_arr = array();
1514
1515                 for ($i = 0; $i >= -4; $i--) {
1516
1517                         $count = getFeedUnread($link, $i);
1518
1519                         $cv = array("id" => $i,
1520                                 "counter" => (int) $count);
1521
1522 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1523 //                              $cv["xmsg"] = getFeedArticles($link, $i)." ".__("total");
1524
1525                         array_push($ret_arr, $cv);
1526                 }
1527
1528                 return $ret_arr;
1529         }
1530
1531         function getLabelCounters($link, $descriptions = false) {
1532
1533                 $ret_arr = array();
1534
1535                 $owner_uid = $_SESSION["uid"];
1536
1537                 $result = db_query($link, "SELECT id, caption FROM ttrss_labels2
1538                         WHERE owner_uid = '$owner_uid'");
1539
1540                 while ($line = db_fetch_assoc($result)) {
1541
1542                         $id = -$line["id"] - 11;
1543
1544                         $label_name = $line["caption"];
1545                         $count = getFeedUnread($link, $id);
1546
1547                         $cv = array("id" => $id,
1548                                 "counter" => (int) $count);
1549
1550                         if ($descriptions)
1551                                 $cv["description"] = $label_name;
1552
1553 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1554 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1555
1556                         array_push($ret_arr, $cv);
1557                 }
1558
1559                 return $ret_arr;
1560         }
1561
1562         function getFeedCounters($link, $active_feed = false) {
1563
1564                 $ret_arr = array();
1565
1566                 $query = "SELECT ttrss_feeds.id,
1567                                 ttrss_feeds.title,
1568                                 ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
1569                                 last_error, value AS count
1570                         FROM ttrss_feeds, ttrss_counters_cache
1571                         WHERE ttrss_feeds.owner_uid = ".$_SESSION["uid"]."
1572                                 AND ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid
1573                                 AND ttrss_counters_cache.feed_id = id";
1574
1575                 $result = db_query($link, $query);
1576                 $fctrs_modified = false;
1577
1578                 while ($line = db_fetch_assoc($result)) {
1579
1580                         $id = $line["id"];
1581                         $count = $line["count"];
1582                         $last_error = htmlspecialchars($line["last_error"]);
1583
1584                         $last_updated = make_local_datetime($link, $line['last_updated'], false);
1585
1586                         $has_img = feed_has_icon($id);
1587
1588                         if (date('Y') - date('Y', strtotime($line['last_updated'])) > 2)
1589                                 $last_updated = '';
1590
1591                         $cv = array("id" => $id,
1592                                 "updated" => $last_updated,
1593                                 "counter" => (int) $count,
1594                                 "has_img" => (int) $has_img);
1595
1596                         if ($last_error)
1597                                 $cv["error"] = $last_error;
1598
1599 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1600 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1601
1602                         if ($active_feed && $id == $active_feed)
1603                                 $cv["title"] = truncate_string($line["title"], 30);
1604
1605                         array_push($ret_arr, $cv);
1606
1607                 }
1608
1609                 return $ret_arr;
1610         }
1611
1612         function get_pgsql_version($link) {
1613                 $result = db_query($link, "SELECT version() AS version");
1614                 $version = explode(" ", db_fetch_result($result, 0, "version"));
1615                 return $version[1];
1616         }
1617
1618         /**
1619          * @return array (code => Status code, message => error message if available)
1620          *
1621          *                 0 - OK, Feed already exists
1622          *                 1 - OK, Feed added
1623          *                 2 - Invalid URL
1624          *                 3 - URL content is HTML, no feeds available
1625          *                 4 - URL content is HTML which contains multiple feeds.
1626          *                     Here you should call extractfeedurls in rpc-backend
1627          *                     to get all possible feeds.
1628          *                 5 - Couldn't download the URL content.
1629          */
1630         function subscribe_to_feed($link, $url, $cat_id = 0,
1631                         $auth_login = '', $auth_pass = '', $need_auth = false) {
1632
1633                 global $fetch_last_error;
1634
1635                 require_once "include/rssfuncs.php";
1636
1637                 $url = fix_url($url);
1638
1639                 if (!$url || !validate_feed_url($url)) return array("code" => 2);
1640
1641                 $contents = @fetch_file_contents($url, false, $auth_login, $auth_pass);
1642
1643                 if (!$contents) {
1644                         return array("code" => 5, "message" => $fetch_last_error);
1645                 }
1646
1647                 if (is_html($contents)) {
1648                         $feedUrls = get_feeds_from_html($url, $contents);
1649
1650                         if (count($feedUrls) == 0) {
1651                                 return array("code" => 3);
1652                         } else if (count($feedUrls) > 1) {
1653                                 return array("code" => 4, "feeds" => $feedUrls);
1654                         }
1655                         //use feed url as new URL
1656                         $url = key($feedUrls);
1657                 }
1658
1659                 if ($cat_id == "0" || !$cat_id) {
1660                         $cat_qpart = "NULL";
1661                 } else {
1662                         $cat_qpart = "'$cat_id'";
1663                 }
1664
1665                 $result = db_query($link,
1666                         "SELECT id FROM ttrss_feeds
1667                         WHERE feed_url = '$url' AND owner_uid = ".$_SESSION["uid"]);
1668
1669                 if (db_num_rows($result) == 0) {
1670                         $result = db_query($link,
1671                                 "INSERT INTO ttrss_feeds
1672                                         (owner_uid,feed_url,title,cat_id, auth_login,auth_pass,update_method)
1673                                 VALUES ('".$_SESSION["uid"]."', '$url',
1674                                 '[Unknown]', $cat_qpart, '$auth_login', '$auth_pass', 0)");
1675
1676                         $result = db_query($link,
1677                                 "SELECT id FROM ttrss_feeds WHERE feed_url = '$url'
1678                                         AND owner_uid = " . $_SESSION["uid"]);
1679
1680                         $feed_id = db_fetch_result($result, 0, "id");
1681
1682                         if ($feed_id) {
1683                                 update_rss_feed($link, $feed_id, true);
1684                         }
1685
1686                         return array("code" => 1);
1687                 } else {
1688                         return array("code" => 0);
1689                 }
1690         }
1691
1692         function print_feed_select($link, $id, $default_id = "",
1693                 $attributes = "", $include_all_feeds = true,
1694                 $root_id = false, $nest_level = 0) {
1695
1696                 if (!$root_id) {
1697                         print "<select id=\"$id\" name=\"$id\" $attributes>";
1698                         if ($include_all_feeds) {
1699                                 $is_selected = ("0" == $default_id) ? "selected=\"1\"" : "";
1700                                 print "<option $is_selected value=\"0\">".__('All feeds')."</option>";
1701                         }
1702                 }
1703
1704                 if (get_pref($link, 'ENABLE_FEED_CATS')) {
1705
1706                         if ($root_id)
1707                                 $parent_qpart = "parent_cat = '$root_id'";
1708                         else
1709                                 $parent_qpart = "parent_cat IS NULL";
1710
1711                         $result = db_query($link, "SELECT id,title,
1712                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1713                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1714                                 FROM ttrss_feed_categories
1715                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1716
1717                         while ($line = db_fetch_assoc($result)) {
1718
1719                                 for ($i = 0; $i < $nest_level; $i++)
1720                                         $line["title"] = " - " . $line["title"];
1721
1722                                 $is_selected = ("CAT:".$line["id"] == $default_id) ? "selected=\"1\"" : "";
1723
1724                                 printf("<option $is_selected value='CAT:%d'>%s</option>",
1725                                         $line["id"], htmlspecialchars($line["title"]));
1726
1727                                 if ($line["num_children"] > 0)
1728                                         print_feed_select($link, $id, $default_id, $attributes,
1729                                                 $include_all_feeds, $line["id"], $nest_level+1);
1730
1731                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1732                                         WHERE cat_id = '".$line["id"]."' AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1733
1734                                 while ($fline = db_fetch_assoc($feed_result)) {
1735                                         $is_selected = ($fline["id"] == $default_id) ? "selected=\"1\"" : "";
1736
1737                                         $fline["title"] = " + " . $fline["title"];
1738
1739                                         for ($i = 0; $i < $nest_level; $i++)
1740                                                 $fline["title"] = " - " . $fline["title"];
1741
1742                                         printf("<option $is_selected value='%d'>%s</option>",
1743                                                 $fline["id"], htmlspecialchars($fline["title"]));
1744                                 }
1745                         }
1746
1747                         if (!$root_id) {
1748                                 $is_selected = ($default_id == "CAT:0") ? "selected=\"1\"" : "";
1749
1750                                 printf("<option $is_selected value='CAT:0'>%s</option>",
1751                                         __("Uncategorized"));
1752
1753                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1754                                         WHERE cat_id IS NULL AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1755
1756                                 while ($fline = db_fetch_assoc($feed_result)) {
1757                                         $is_selected = ($fline["id"] == $default_id && !$default_is_cat) ? "selected=\"1\"" : "";
1758
1759                                         $fline["title"] = " + " . $fline["title"];
1760
1761                                         for ($i = 0; $i < $nest_level; $i++)
1762                                                 $fline["title"] = " - " . $fline["title"];
1763
1764                                         printf("<option $is_selected value='%d'>%s</option>",
1765                                                 $fline["id"], htmlspecialchars($fline["title"]));
1766                                 }
1767                         }
1768
1769                 } else {
1770                         $result = db_query($link, "SELECT id,title FROM ttrss_feeds
1771                                 WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
1772
1773                         while ($line = db_fetch_assoc($result)) {
1774
1775                                 $is_selected = ($line["id"] == $default_id) ? "selected=\"1\"" : "";
1776
1777                                 printf("<option $is_selected value='%d'>%s</option>",
1778                                         $line["id"], htmlspecialchars($line["title"]));
1779                         }
1780                 }
1781
1782                 if (!$root_id) {
1783                         print "</select>";
1784                 }
1785         }
1786
1787         function print_feed_cat_select($link, $id, $default_id,
1788                 $attributes, $include_all_cats = true, $root_id = false, $nest_level = 0) {
1789
1790                         if (!$root_id) {
1791                                         print "<select id=\"$id\" name=\"$id\" default=\"$default_id\" onchange=\"catSelectOnChange(this)\" $attributes>";
1792                         }
1793
1794                         if ($root_id)
1795                                 $parent_qpart = "parent_cat = '$root_id'";
1796                         else
1797                                 $parent_qpart = "parent_cat IS NULL";
1798
1799                         $result = db_query($link, "SELECT id,title,
1800                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1801                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1802                                 FROM ttrss_feed_categories
1803                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1804
1805                         while ($line = db_fetch_assoc($result)) {
1806                                 if ($line["id"] == $default_id) {
1807                                         $is_selected = "selected=\"1\"";
1808                                 } else {
1809                                         $is_selected = "";
1810                                 }
1811
1812                                 for ($i = 0; $i < $nest_level; $i++)
1813                                         $line["title"] = " - " . $line["title"];
1814
1815                                 if ($line["title"])
1816                                         printf("<option $is_selected value='%d'>%s</option>",
1817                                                 $line["id"], htmlspecialchars($line["title"]));
1818
1819                                 if ($line["num_children"] > 0)
1820                                         print_feed_cat_select($link, $id, $default_id, $attributes,
1821                                                 $include_all_cats, $line["id"], $nest_level+1);
1822                         }
1823
1824                         if (!$root_id) {
1825                                 if ($include_all_cats) {
1826                                         if (db_num_rows($result) > 0) {
1827                                                 print "<option disabled=\"1\">--------</option>";
1828                                         }
1829
1830                                         if ($default_id == 0) {
1831                                                 $is_selected = "selected=\"1\"";
1832                                         } else {
1833                                                 $is_selected = "";
1834                                         }
1835
1836                                         print "<option $is_selected value=\"0\">".__('Uncategorized')."</option>";
1837                                 }
1838                                 print "</select>";
1839                         }
1840                 }
1841
1842         function checkbox_to_sql_bool($val) {
1843                 return ($val == "on") ? "true" : "false";
1844         }
1845
1846         function getFeedCatTitle($link, $id) {
1847                 if ($id == -1) {
1848                         return __("Special");
1849                 } else if ($id < -10) {
1850                         return __("Labels");
1851                 } else if ($id > 0) {
1852                         $result = db_query($link, "SELECT ttrss_feed_categories.title
1853                                 FROM ttrss_feeds, ttrss_feed_categories WHERE ttrss_feeds.id = '$id' AND
1854                                         cat_id = ttrss_feed_categories.id");
1855                         if (db_num_rows($result) == 1) {
1856                                 return db_fetch_result($result, 0, "title");
1857                         } else {
1858                                 return __("Uncategorized");
1859                         }
1860                 } else {
1861                         return "getFeedCatTitle($id) failed";
1862                 }
1863
1864         }
1865
1866         function getFeedIcon($id) {
1867                 switch ($id) {
1868                 case 0:
1869                         return "images/archive.png";
1870                         break;
1871                 case -1:
1872                         return "images/mark_set.svg";
1873                         break;
1874                 case -2:
1875                         return "images/pub_set.svg";
1876                         break;
1877                 case -3:
1878                         return "images/fresh.png";
1879                         break;
1880                 case -4:
1881                         return "images/tag.png";
1882                         break;
1883                 case -6:
1884                         return "images/recently_read.png";
1885                         break;
1886                 default:
1887                         if ($id < -10) {
1888                                 return "images/label.png";
1889                         } else {
1890                                 if (file_exists(ICONS_DIR . "/$id.ico"))
1891                                         return ICONS_URL . "/$id.ico";
1892                         }
1893                         break;
1894                 }
1895         }
1896
1897         function getFeedTitle($link, $id, $cat = false) {
1898                 if ($cat) {
1899                         return getCategoryTitle($link, $id);
1900                 } else if ($id == -1) {
1901                         return __("Starred articles");
1902                 } else if ($id == -2) {
1903                         return __("Published articles");
1904                 } else if ($id == -3) {
1905                         return __("Fresh articles");
1906                 } else if ($id == -4) {
1907                         return __("All articles");
1908                 } else if ($id === 0 || $id === "0") {
1909                         return __("Archived articles");
1910                 } else if ($id == -6) {
1911                         return __("Recently read");
1912                 } else if ($id < -10) {
1913                         $label_id = -$id - 11;
1914                         $result = db_query($link, "SELECT caption FROM ttrss_labels2 WHERE id = '$label_id'");
1915                         if (db_num_rows($result) == 1) {
1916                                 return db_fetch_result($result, 0, "caption");
1917                         } else {
1918                                 return "Unknown label ($label_id)";
1919                         }
1920
1921                 } else if (is_numeric($id) && $id > 0) {
1922                         $result = db_query($link, "SELECT title FROM ttrss_feeds WHERE id = '$id'");
1923                         if (db_num_rows($result) == 1) {
1924                                 return db_fetch_result($result, 0, "title");
1925                         } else {
1926                                 return "Unknown feed ($id)";
1927                         }
1928                 } else {
1929                         return $id;
1930                 }
1931         }
1932
1933         function make_init_params($link) {
1934                 $params = array();
1935
1936                 $params["theme"] = get_user_theme($link);
1937                 $params["theme_options"] = get_user_theme_options($link);
1938
1939                 $params["sign_progress"] = theme_image($link, "images/indicator_white.gif");
1940                 $params["sign_progress_tiny"] = theme_image($link, "images/indicator_tiny.gif");
1941                 $params["sign_excl"] = theme_image($link, "images/sign_excl.svg");
1942                 $params["sign_info"] = theme_image($link, "images/sign_info.svg");
1943
1944                 foreach (array("ON_CATCHUP_SHOW_NEXT_FEED", "HIDE_READ_FEEDS",
1945                         "ENABLE_FEED_CATS", "FEEDS_SORT_BY_UNREAD", "CONFIRM_FEED_CATCHUP",
1946                         "CDM_AUTO_CATCHUP", "FRESH_ARTICLE_MAX_AGE", "DEFAULT_ARTICLE_LIMIT",
1947                         "HIDE_READ_SHOWS_SPECIAL", "COMBINED_DISPLAY_MODE") as $param) {
1948
1949                                  $params[strtolower($param)] = (int) get_pref($link, $param);
1950                  }
1951
1952                 $params["icons_url"] = ICONS_URL;
1953                 $params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
1954                 $params["default_view_mode"] = get_pref($link, "_DEFAULT_VIEW_MODE");
1955                 $params["default_view_limit"] = (int) get_pref($link, "_DEFAULT_VIEW_LIMIT");
1956                 $params["default_view_order_by"] = get_pref($link, "_DEFAULT_VIEW_ORDER_BY");
1957                 $params["bw_limit"] = (int) $_SESSION["bw_limit"];
1958
1959                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
1960                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1961
1962                 $max_feed_id = db_fetch_result($result, 0, "mid");
1963                 $num_feeds = db_fetch_result($result, 0, "nf");
1964
1965                 $params["max_feed_id"] = (int) $max_feed_id;
1966                 $params["num_feeds"] = (int) $num_feeds;
1967
1968                 $params["collapsed_feedlist"] = (int) get_pref($link, "_COLLAPSED_FEEDLIST");
1969                 $params["hotkeys"] = get_hotkeys_map($link);
1970
1971                 $params["csrf_token"] = $_SESSION["csrf_token"];
1972                 $params["widescreen"] = (int) $_SESSION["widescreen"];
1973
1974                 $params['simple_update'] = defined('SIMPLE_UPDATE_MODE') && SIMPLE_UPDATE_MODE;
1975
1976                 return $params;
1977         }
1978
1979         function get_hotkeys_info($link) {
1980                 $hotkeys = array(
1981                         __("Navigation") => array(
1982                                 "next_feed" => __("Open next feed"),
1983                                 "prev_feed" => __("Open previous feed"),
1984                                 "next_article" => __("Open next article"),
1985                                 "prev_article" => __("Open previous article"),
1986                                 "search_dialog" => __("Show search dialog")),
1987                         __("Article") => array(
1988                                 "toggle_mark" => __("Toggle starred"),
1989                                 "toggle_publ" => __("Toggle published"),
1990                                 "toggle_unread" => __("Toggle unread"),
1991                                 "edit_tags" => __("Edit tags"),
1992                                 "dismiss_selected" => __("Dismiss selected"),
1993                                 "dismiss_read" => __("Dismiss read"),
1994                                 "open_in_new_window" => __("Open in new window"),
1995                                 "catchup_below" => __("Mark below as read"),
1996                                 "catchup_above" => __("Mark above as read"),
1997                                 "article_scroll_down" => __("Scroll down"),
1998                                 "article_scroll_up" => __("Scroll up"),
1999                                 "select_article_cursor" => __("Select article under cursor"),
2000                                 "email_article" => __("Email article"),
2001                                 "toggle_widescreen" => __("Toggle widescreen mode")),
2002                         __("Article selection") => array(
2003                                 "select_all" => __("Select all articles"),
2004                                 "select_unread" => __("Select unread"),
2005                                 "select_marked" => __("Select starred"),
2006                                 "select_published" => __("Select published"),
2007                                 "select_invert" => __("Invert selection"),
2008                                 "select_none" => __("Deselect everything")),
2009                         __("Feed") => array(
2010                                 "feed_refresh" => __("Refresh current feed"),
2011                                 "feed_unhide_read" => __("Un/hide read feeds"),
2012                                 "feed_subscribe" => __("Subscribe to feed"),
2013                                 "feed_edit" => __("Edit feed"),
2014                                 "feed_catchup" => __("Mark as read"),
2015                                 "feed_reverse" => __("Reverse headlines"),
2016                                 "feed_debug_update" => __("Debug feed update"),
2017                                 "catchup_all" => __("Mark all feeds as read"),
2018                                 "cat_toggle_collapse" => __("Un/collapse current category")),
2019                         __("Go to") => array(
2020                                 "goto_all" => __("All articles"),
2021                                 "goto_fresh" => __("Fresh"),
2022                                 "goto_marked" => __("Starred"),
2023                                 "goto_published" => __("Published"),
2024                                 "goto_tagcloud" => __("Tag cloud"),
2025                                 "goto_prefs" => __("Preferences")),
2026                         __("Other") => array(
2027                                 "create_label" => __("Create label"),
2028                                 "create_filter" => __("Create filter"),
2029                                 "collapse_sidebar" => __("Un/collapse sidebar"),
2030                                 "help_dialog" => __("Show help dialog"))
2031                         );
2032
2033                 return $hotkeys;
2034         }
2035
2036         function get_hotkeys_map($link) {
2037                 $hotkeys = array(
2038 //                      "navigation" => array(
2039                                 "k" => "next_feed",
2040                                 "j" => "prev_feed",
2041                                 "n" => "next_article",
2042                                 "p" => "prev_article",
2043                                 "(38)|up" => "prev_article",
2044                                 "(40)|down" => "next_article",
2045                                 "(191)|/" => "search_dialog",
2046 //                      "article" => array(
2047                                 "s" => "toggle_mark",
2048                                 "S" => "toggle_publ",
2049                                 "u" => "toggle_unread",
2050                                 "T" => "edit_tags",
2051                                 "D" => "dismiss_selected",
2052                                 "X" => "dismiss_read",
2053                                 "o" => "open_in_new_window",
2054                                 "c p" => "catchup_below",
2055                                 "c n" => "catchup_above",
2056                                 "N" => "article_scroll_down",
2057                                 "P" => "article_scroll_up",
2058                                 "a W" => "toggle_widescreen",
2059                                 "e" => "email_article",
2060 //                      "article_selection" => array(
2061                                 "a a" => "select_all",
2062                                 "a u" => "select_unread",
2063                                 "a U" => "select_marked",
2064                                 "a p" => "select_published",
2065                                 "a i" => "select_invert",
2066                                 "a n" => "select_none",
2067 //                      "feed" => array(
2068                                 "f r" => "feed_refresh",
2069                                 "f a" => "feed_unhide_read",
2070                                 "f s" => "feed_subscribe",
2071                                 "f e" => "feed_edit",
2072                                 "f q" => "feed_catchup",
2073                                 "f x" => "feed_reverse",
2074                                 "f D" => "feed_debug_update",
2075                                 "Q" => "catchup_all",
2076                                 "x" => "cat_toggle_collapse",
2077 //                      "goto" => array(
2078                                 "g a" => "goto_all",
2079                                 "g f" => "goto_fresh",
2080                                 "g s" => "goto_marked",
2081                                 "g p" => "goto_published",
2082                                 "g t" => "goto_tagcloud",
2083                                 "g P" => "goto_prefs",
2084 //                      "other" => array(
2085                                 "(9)|Tab" => "select_article_cursor", // tab
2086                                 "c l" => "create_label",
2087                                 "c f" => "create_filter",
2088                                 "c s" => "collapse_sidebar",
2089                                 "^(191)|Ctrl+/" => "help_dialog",
2090                         );
2091
2092                 global $pluginhost;
2093                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_HOTKEY_MAP) as $plugin) {
2094                         $hotkeys = $plugin->hook_hotkey_map($hotkeys);
2095                 }
2096
2097                 $prefixes = array();
2098
2099                 foreach (array_keys($hotkeys) as $hotkey) {
2100                         $pair = explode(" ", $hotkey, 2);
2101
2102                         if (count($pair) > 1 && !in_array($pair[0], $prefixes)) {
2103                                 array_push($prefixes, $pair[0]);
2104                         }
2105                 }
2106
2107                 return array($prefixes, $hotkeys);
2108         }
2109
2110         function make_runtime_info($link) {
2111                 $data = array();
2112
2113                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2114                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2115
2116                 $max_feed_id = db_fetch_result($result, 0, "mid");
2117                 $num_feeds = db_fetch_result($result, 0, "nf");
2118
2119                 $data["max_feed_id"] = (int) $max_feed_id;
2120                 $data["num_feeds"] = (int) $num_feeds;
2121
2122                 $data['last_article_id'] = getLastArticleId($link);
2123                 $data['cdm_expanded'] = get_pref($link, 'CDM_EXPANDED');
2124
2125                 if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
2126
2127                         $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
2128
2129                         if (time() - $_SESSION["daemon_stamp_check"] > 30) {
2130
2131                                 $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
2132
2133                                 if ($stamp) {
2134                                         $stamp_delta = time() - $stamp;
2135
2136                                         if ($stamp_delta > 1800) {
2137                                                 $stamp_check = 0;
2138                                         } else {
2139                                                 $stamp_check = 1;
2140                                                 $_SESSION["daemon_stamp_check"] = time();
2141                                         }
2142
2143                                         $data['daemon_stamp_ok'] = $stamp_check;
2144
2145                                         $stamp_fmt = date("Y.m.d, G:i", $stamp);
2146
2147                                         $data['daemon_stamp'] = $stamp_fmt;
2148                                 }
2149                         }
2150                 }
2151
2152                 if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
2153                                 $new_version_details = @check_for_update($link);
2154
2155                                 $data['new_version_available'] = (int) ($new_version_details != false);
2156
2157                                 $_SESSION["last_version_check"] = time();
2158                                 $_SESSION["version_data"] = $new_version_details;
2159                 }
2160
2161                 return $data;
2162         }
2163
2164         function search_to_sql($link, $search, $match_on) {
2165
2166                 $search_query_part = "";
2167
2168                 $keywords = explode(" ", $search);
2169                 $query_keywords = array();
2170
2171                 foreach ($keywords as $k) {
2172                         if (strpos($k, "-") === 0) {
2173                                 $k = substr($k, 1);
2174                                 $not = "NOT";
2175                         } else {
2176                                 $not = "";
2177                         }
2178
2179                         $commandpair = explode(":", mb_strtolower($k), 2);
2180
2181                         if ($commandpair[0] == "note" && $commandpair[1]) {
2182
2183                                 if ($commandpair[1] == "true")
2184                                         array_push($query_keywords, "($not (note IS NOT NULL AND note != ''))");
2185                                 else
2186                                         array_push($query_keywords, "($not (note IS NULL OR note = ''))");
2187
2188                         } else if ($commandpair[0] == "star" && $commandpair[1]) {
2189
2190                                 if ($commandpair[1] == "true")
2191                                         array_push($query_keywords, "($not (marked = true))");
2192                                 else
2193                                         array_push($query_keywords, "($not (marked = false))");
2194
2195                         } else if ($commandpair[0] == "pub" && $commandpair[1]) {
2196
2197                                 if ($commandpair[1] == "true")
2198                                         array_push($query_keywords, "($not (published = true))");
2199                                 else
2200                                         array_push($query_keywords, "($not (published = false))");
2201
2202                         } else if (strpos($k, "@") === 0) {
2203
2204                                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $_SESSION['uid']);
2205                                 $orig_ts = strtotime(substr($k, 1));
2206                                 $k = date("Y-m-d", convert_timestamp($orig_ts, $user_tz_string, 'UTC'));
2207
2208                                 //$k = date("Y-m-d", strtotime(substr($k, 1)));
2209
2210                                 array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
2211                         } else if ($match_on == "both") {
2212                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2213                                                 OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2214                         } else if ($match_on == "title") {
2215                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%'))");
2216                         } else if ($match_on == "content") {
2217                                 array_push($query_keywords, "(UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2218                         }
2219                 }
2220
2221                 $search_query_part = implode("AND", $query_keywords);
2222
2223                 return $search_query_part;
2224         }
2225
2226         function getParentCategories($link, $cat, $owner_uid) {
2227                 $rv = array();
2228
2229                 $result = db_query($link, "SELECT parent_cat FROM ttrss_feed_categories
2230                         WHERE id = '$cat' AND parent_cat IS NOT NULL AND owner_uid = $owner_uid");
2231
2232                 while ($line = db_fetch_assoc($result)) {
2233                         array_push($rv, $line["parent_cat"]);
2234                         $rv = array_merge($rv, getParentCategories($link, $line["parent_cat"], $owner_uid));
2235                 }
2236
2237                 return $rv;
2238         }
2239
2240         function getChildCategories($link, $cat, $owner_uid) {
2241                 $rv = array();
2242
2243                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories
2244                         WHERE parent_cat = '$cat' AND owner_uid = $owner_uid");
2245
2246                 while ($line = db_fetch_assoc($result)) {
2247                         array_push($rv, $line["id"]);
2248                         $rv = array_merge($rv, getChildCategories($link, $line["id"], $owner_uid));
2249                 }
2250
2251                 return $rv;
2252         }
2253
2254         function queryFeedHeadlines($link, $feed, $limit, $view_mode, $cat_view, $search, $search_mode, $match_on, $override_order = false, $offset = 0, $owner_uid = 0, $filter = false, $since_id = 0, $include_children = false) {
2255
2256                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2257
2258                 $ext_tables_part = "";
2259
2260                         if ($search) {
2261
2262                                 if (SPHINX_ENABLED) {
2263                                         $ids = join(",", @sphinx_search($search, 0, 500));
2264
2265                                         if ($ids)
2266                                                 $search_query_part = "ref_id IN ($ids) AND ";
2267                                         else
2268                                                 $search_query_part = "ref_id = -1 AND ";
2269
2270                                 } else {
2271                                         $search_query_part = search_to_sql($link, $search, $match_on);
2272                                         $search_query_part .= " AND ";
2273                                 }
2274
2275                         } else {
2276                                 $search_query_part = "";
2277                         }
2278
2279                         if ($filter) {
2280
2281                                 if (DB_TYPE == "pgsql") {
2282                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '14 days' ";
2283                                 } else {
2284                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL 14 DAY) ";
2285                                 }
2286
2287                                 $override_order = "updated DESC";
2288
2289                                 $filter_query_part = filter_to_sql($link, $filter, $owner_uid);
2290
2291                                 // Try to check if SQL regexp implementation chokes on a valid regexp
2292                                 $result = db_query($link, "SELECT true AS true_val FROM ttrss_entries,
2293                                         ttrss_user_entries, ttrss_feeds, ttrss_feed_categories
2294                                         WHERE $filter_query_part LIMIT 1", false);
2295
2296                                 $test = db_fetch_result($result, 0, "true_val");
2297
2298                                 if (!$test) {
2299                                         $filter_query_part = "false AND";
2300                                 } else {
2301                                         $filter_query_part .= " AND";
2302                                 }
2303
2304                         } else {
2305                                 $filter_query_part = "";
2306                         }
2307
2308                         if ($since_id) {
2309                                 $since_id_part = "ttrss_entries.id > $since_id AND ";
2310                         } else {
2311                                 $since_id_part = "";
2312                         }
2313
2314                         $view_query_part = "";
2315
2316                         if ($view_mode == "adaptive" || $view_query_part == "noscores") {
2317                                 if ($search) {
2318                                         $view_query_part = " ";
2319                                 } else if ($feed != -1) {
2320                                         $unread = getFeedUnread($link, $feed, $cat_view);
2321
2322                                         if ($cat_view && $feed > 0 && $include_children)
2323                                                 $unread += getCategoryChildrenUnread($link, $feed);
2324
2325                                         if ($unread > 0) {
2326                                                 $view_query_part = " unread = true AND ";
2327                                         }
2328                                 }
2329                         }
2330
2331                         if ($view_mode == "marked") {
2332                                 $view_query_part = " marked = true AND ";
2333                         }
2334
2335                         if ($view_mode == "published") {
2336                                 $view_query_part = " published = true AND ";
2337                         }
2338
2339                         if ($view_mode == "unread") {
2340                                 $view_query_part = " unread = true AND ";
2341                         }
2342
2343                         if ($view_mode == "updated") {
2344                                 $view_query_part = " (last_read is null and unread = false) AND ";
2345                         }
2346
2347                         if ($limit > 0) {
2348                                 $limit_query_part = "LIMIT " . $limit;
2349                         }
2350
2351                         $allow_archived = false;
2352
2353                         $vfeed_query_part = "";
2354
2355                         // override query strategy and enable feed display when searching globally
2356                         if ($search && $search_mode == "all_feeds") {
2357                                 $query_strategy_part = "true";
2358                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2359                         /* tags */
2360                         } else if (!is_numeric($feed)) {
2361                                 $query_strategy_part = "true";
2362                                 $vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
2363                                         id = feed_id) as feed_title,";
2364                         } else if ($search && $search_mode == "this_cat") {
2365                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2366
2367                                 if ($feed > 0) {
2368                                         if ($include_children) {
2369                                                 $subcats = getChildCategories($link, $feed, $owner_uid);
2370                                                 array_push($subcats, $feed);
2371                                                 $cats_qpart = join(",", $subcats);
2372                                         } else {
2373                                                 $cats_qpart = $feed;
2374                                         }
2375
2376                                         $query_strategy_part = "ttrss_feeds.cat_id IN ($cats_qpart)";
2377
2378                                 } else {
2379                                         $query_strategy_part = "ttrss_feeds.cat_id IS NULL";
2380                                 }
2381
2382                         } else if ($feed > 0) {
2383
2384                                 if ($cat_view) {
2385
2386                                         if ($feed > 0) {
2387                                                 if ($include_children) {
2388                                                         # sub-cats
2389                                                         $subcats = getChildCategories($link, $feed, $owner_uid);
2390
2391                                                         array_push($subcats, $feed);
2392                                                         $query_strategy_part = "cat_id IN (".
2393                                                                         implode(",", $subcats).")";
2394
2395                                                 } else {
2396                                                         $query_strategy_part = "cat_id = '$feed'";
2397                                                 }
2398
2399                                         } else {
2400                                                 $query_strategy_part = "cat_id IS NULL";
2401                                         }
2402
2403                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2404
2405                                 } else {
2406                                         $query_strategy_part = "feed_id = '$feed'";
2407                                 }
2408                         } else if ($feed == 0 && !$cat_view) { // archive virtual feed
2409                                 $query_strategy_part = "feed_id IS NULL";
2410                                 $allow_archived = true;
2411                         } else if ($feed == 0 && $cat_view) { // uncategorized
2412                                 $query_strategy_part = "cat_id IS NULL AND feed_id IS NOT NULL";
2413                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2414                         } else if ($feed == -1) { // starred virtual feed
2415                                 $query_strategy_part = "marked = true";
2416                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2417                                 $allow_archived = true;
2418
2419                         } else if ($feed == -2) { // published virtual feed OR labels category
2420
2421                                 if (!$cat_view) {
2422                                         $query_strategy_part = "published = true";
2423                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2424                                         $allow_archived = true;
2425
2426                                         if (!$override_order) $override_order = "last_read DESC, updated DESC";
2427                                 } else {
2428                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2429
2430                                         $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2431
2432                                         $query_strategy_part = "ttrss_labels2.id = ttrss_user_labels2.label_id AND
2433                                                 ttrss_user_labels2.article_id = ref_id";
2434
2435                                 }
2436                         } else if ($feed == -6) { // recently read
2437                                 $query_strategy_part = "unread = false AND last_read IS NOT NULL";
2438                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2439                                 $allow_archived = true;
2440
2441                                 if (!$override_order) $override_order = "last_read DESC";
2442                         } else if ($feed == -3) { // fresh virtual feed
2443                                 $query_strategy_part = "unread = true AND score >= 0";
2444
2445                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
2446
2447                                 if (DB_TYPE == "pgsql") {
2448                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
2449                                 } else {
2450                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
2451                                 }
2452
2453                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2454                         } else if ($feed == -4) { // all articles virtual feed
2455                                 $query_strategy_part = "true";
2456                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2457                         } else if ($feed <= -10) { // labels
2458                                 $label_id = -$feed - 11;
2459
2460                                 $query_strategy_part = "label_id = '$label_id' AND
2461                                         ttrss_labels2.id = ttrss_user_labels2.label_id AND
2462                                         ttrss_user_labels2.article_id = ref_id";
2463
2464                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2465                                 $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2466                                 $allow_archived = true;
2467
2468                         } else {
2469                                 $query_strategy_part = "true";
2470                         }
2471
2472                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
2473                                 $date_sort_field = "updated";
2474                         } else {
2475                                 $date_sort_field = "date_entered";
2476                         }
2477
2478                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
2479                                 $order_by = "$date_sort_field";
2480                         } else {
2481                                 $order_by = "$date_sort_field DESC";
2482                         }
2483
2484                         if ($view_mode != "noscores") {
2485                                 $order_by = "score DESC, $order_by";
2486                         }
2487
2488                         if ($override_order) {
2489                                 $order_by = $override_order;
2490                         }
2491
2492                         $feed_title = "";
2493
2494                         if ($search) {
2495                                 $feed_title = T_sprintf("Search results: %s", $search);
2496                         } else {
2497                                 if ($cat_view) {
2498                                         $feed_title = getCategoryTitle($link, $feed);
2499                                 } else {
2500                                         if (is_numeric($feed) && $feed > 0) {
2501                                                 $result = db_query($link, "SELECT title,site_url,last_error
2502                                                         FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = $owner_uid");
2503
2504                                                 $feed_title = db_fetch_result($result, 0, "title");
2505                                                 $feed_site_url = db_fetch_result($result, 0, "site_url");
2506                                                 $last_error = db_fetch_result($result, 0, "last_error");
2507                                         } else {
2508                                                 $feed_title = getFeedTitle($link, $feed);
2509                                         }
2510                                 }
2511                         }
2512
2513                         $content_query_part = "content as content_preview, cached_content, ";
2514
2515                         if (is_numeric($feed)) {
2516
2517                                 if ($feed >= 0) {
2518                                         $feed_kind = "Feeds";
2519                                 } else {
2520                                         $feed_kind = "Labels";
2521                                 }
2522
2523                                 if ($limit_query_part) {
2524                                         $offset_query_part = "OFFSET $offset";
2525                                 }
2526
2527                                 // proper override_order applied above
2528                                 if ($vfeed_query_part && get_pref($link, 'VFEED_GROUP_BY_FEED', $owner_uid)) {
2529                                         if (!$override_order) {
2530                                                 $order_by = "ttrss_feeds.title, $order_by";
2531                                         } else {
2532                                                 $order_by = "ttrss_feeds.title, $override_order";
2533                                         }
2534                                 }
2535
2536                                 if (!$allow_archived) {
2537                                         $from_qpart = "ttrss_entries,ttrss_user_entries,ttrss_feeds$ext_tables_part";
2538                                         $feed_check_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
2539
2540                                 } else {
2541                                         $from_qpart = "ttrss_entries$ext_tables_part,ttrss_user_entries
2542                                                 LEFT JOIN ttrss_feeds ON (feed_id = ttrss_feeds.id)";
2543                                 }
2544
2545                                 $query = "SELECT DISTINCT
2546                                                 date_entered,
2547                                                 guid,
2548                                                 ttrss_entries.id,ttrss_entries.title,
2549                                                 updated,
2550                                                 label_cache,
2551                                                 tag_cache,
2552                                                 always_display_enclosures,
2553                                                 site_url,
2554                                                 note,
2555                                                 num_comments,
2556                                                 comments,
2557                                                 int_id,
2558                                                 unread,feed_id,marked,published,link,last_read,orig_feed_id,
2559                                                 ".SUBSTRING_FOR_DATE."(last_read,1,19) as last_read_noms,
2560                                                 $vfeed_query_part
2561                                                 $content_query_part
2562                                                 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated_noms,
2563                                                 author,score
2564                                         FROM
2565                                                 $from_qpart
2566                                         WHERE
2567                                         $feed_check_qpart
2568                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
2569                                         ttrss_user_entries.owner_uid = '$owner_uid' AND
2570                                         $search_query_part
2571                                         $filter_query_part
2572                                         $view_query_part
2573                                         $since_id_part
2574                                         $query_strategy_part ORDER BY $order_by
2575                                         $limit_query_part $offset_query_part";
2576
2577                                 if ($_REQUEST["debug"]) print $query;
2578
2579                                 $result = db_query($link, $query);
2580
2581                         } else {
2582                                 // browsing by tag
2583
2584                                 $select_qpart = "SELECT DISTINCT " .
2585                                                                 "date_entered," .
2586                                                                 "guid," .
2587                                                                 "note," .
2588                                                                 "ttrss_entries.id as id," .
2589                                                                 "title," .
2590                                                                 "updated," .
2591                                                                 "unread," .
2592                                                                 "feed_id," .
2593                                                                 "orig_feed_id," .
2594                                                                 "marked," .
2595                                                                 "num_comments, " .
2596                                                                 "comments, " .
2597                                                                 "tag_cache," .
2598                                                                 "label_cache," .
2599                                                                 "link," .
2600                                                                 "last_read," .
2601                                                                 SUBSTRING_FOR_DATE . "(last_read,1,19) as last_read_noms," .
2602                                                                 $since_id_part .
2603                                                                 $vfeed_query_part .
2604                                                                 $content_query_part .
2605                                                                 SUBSTRING_FOR_DATE . "(updated,1,19) as updated_noms," .
2606                                                                 "score ";
2607
2608                                 $feed_kind = "Tags";
2609                                 $all_tags = explode(",", $feed);
2610                                 if ($search_mode == 'any') {
2611                                         $tag_sql = "tag_name in (" . implode(", ", array_map("db_quote", $all_tags)) . ")";
2612                                         $from_qpart = " FROM ttrss_entries,ttrss_user_entries,ttrss_tags ";
2613                                         $where_qpart = " WHERE " .
2614                                                                    "ref_id = ttrss_entries.id AND " .
2615                                                                    "ttrss_user_entries.owner_uid = $owner_uid AND " .
2616                                                                    "post_int_id = int_id AND $tag_sql AND " .
2617                                                                    $view_query_part .
2618                                                                    $search_query_part .
2619                                                                    $query_strategy_part . " ORDER BY $order_by " .
2620                                                                    $limit_query_part;
2621
2622                                 } else {
2623                                         $i = 1;
2624                                         $sub_selects = array();
2625                                         $sub_ands = array();
2626                                         foreach ($all_tags as $term) {
2627                                                 array_push($sub_selects, "(SELECT post_int_id from ttrss_tags WHERE tag_name = " . db_quote($term) . " AND owner_uid = $owner_uid) as A$i");
2628                                                 $i++;
2629                                         }
2630                                         if ($i > 2) {
2631                                                 $x = 1;
2632                                                 $y = 2;
2633                                                 do {
2634                                                         array_push($sub_ands, "A$x.post_int_id = A$y.post_int_id");
2635                                                         $x++;
2636                                                         $y++;
2637                                                 } while ($y < $i);
2638                                         }
2639                                         array_push($sub_ands, "A1.post_int_id = ttrss_user_entries.int_id and ttrss_user_entries.owner_uid = $owner_uid");
2640                                         array_push($sub_ands, "ttrss_user_entries.ref_id = ttrss_entries.id");
2641                                         $from_qpart = " FROM " . implode(", ", $sub_selects) . ", ttrss_user_entries, ttrss_entries";
2642                                         $where_qpart = " WHERE " . implode(" AND ", $sub_ands);
2643                                 }
2644                                 //                              error_log("TAG SQL: " . $tag_sql);
2645                                 // $tag_sql = "tag_name = '$feed'";   DEFAULT way
2646
2647                                 //                              error_log("[". $select_qpart . "][" . $from_qpart . "][" .$where_qpart . "]");
2648                                 $result = db_query($link, $select_qpart . $from_qpart . $where_qpart);
2649                         }
2650
2651                         return array($result, $feed_title, $feed_site_url, $last_error);
2652
2653         }
2654
2655         function sanitize($link, $str, $force_strip_tags = false, $owner = false, $site_url = false) {
2656                 if (!$owner) $owner = $_SESSION["uid"];
2657
2658                 $res = trim($str); if (!$res) return '';
2659
2660                 $config = array('safe' => 1, 'deny_attribute' => 'style, width, height, class, id', 'comment' => 1, 'cdata' => 1, 'balance' => 0);
2661                 $res = htmLawed($res, $config);
2662
2663                 if (get_pref($link, "STRIP_IMAGES", $owner)) {
2664                         $res = preg_replace('/<img[^>]+>/is', '', $res);
2665                 }
2666
2667                 if (strpos($res, "href=") === false)
2668                         $res = rewrite_urls($res);
2669
2670                 $charset_hack = '<head>
2671                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
2672                 </head>';
2673
2674                 $res = trim($res); if (!$res) return '';
2675
2676                 libxml_use_internal_errors(true);
2677
2678                 $doc = new DOMDocument();
2679                 $doc->loadHTML($charset_hack . $res);
2680                 $xpath = new DOMXPath($doc);
2681
2682                 $entries = $xpath->query('(//a[@href]|//img[@src])');
2683                 $br_inserted = 0;
2684
2685                 foreach ($entries as $entry) {
2686
2687                         if ($site_url) {
2688
2689                                 if ($entry->hasAttribute('href'))
2690                                         $entry->setAttribute('href',
2691                                                 rewrite_relative_url($site_url, $entry->getAttribute('href')));
2692
2693                                 if ($entry->hasAttribute('src'))
2694                                         if (preg_match('/^image.php\?i=[a-z0-9]+$/', $entry->getAttribute('src')) == 0)
2695                                                 $entry->setAttribute('src',
2696                                                         rewrite_relative_url($site_url, $entry->getAttribute('src')));
2697                         }
2698
2699                         if (strtolower($entry->nodeName) == "a") {
2700                                 $entry->setAttribute("target", "_blank");
2701                         }
2702
2703                         if (strtolower($entry->nodeName) == "img" && !$br_inserted) {
2704                                 $br = $doc->createElement("br");
2705
2706                                 if ($entry->parentNode->nextSibling) {
2707                                         $entry->parentNode->insertBefore($br, $entry->nextSibling);
2708                                         $br_inserted = 1;
2709                                 }
2710
2711                         }
2712                 }
2713
2714                 $node = $doc->getElementsByTagName('body')->item(0);
2715
2716                 // http://tt-rss.org/redmine/issues/357
2717                 return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
2718         }
2719
2720         function check_for_update($link) {
2721                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2722                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION;
2723
2724                         $version_data = @fetch_file_contents($version_url);
2725
2726                         if ($version_data) {
2727                                 $version_data = json_decode($version_data, true);
2728                                 if ($version_data && $version_data['version']) {
2729
2730                                         if (version_compare(VERSION, $version_data['version']) == -1) {
2731                                                 return $version_data;
2732                                         }
2733                                 }
2734                         }
2735                 }
2736                 return false;
2737         }
2738
2739         function catchupArticlesById($link, $ids, $cmode, $owner_uid = false) {
2740
2741                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2742                 if (count($ids) == 0) return;
2743
2744                 $tmp_ids = array();
2745
2746                 foreach ($ids as $id) {
2747                         array_push($tmp_ids, "ref_id = '$id'");
2748                 }
2749
2750                 $ids_qpart = join(" OR ", $tmp_ids);
2751
2752                 if ($cmode == 0) {
2753                         db_query($link, "UPDATE ttrss_user_entries SET
2754                         unread = false,last_read = NOW()
2755                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2756                 } else if ($cmode == 1) {
2757                         db_query($link, "UPDATE ttrss_user_entries SET
2758                         unread = true
2759                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2760                 } else {
2761                         db_query($link, "UPDATE ttrss_user_entries SET
2762                         unread = NOT unread,last_read = NOW()
2763                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2764                 }
2765
2766                 /* update ccache */
2767
2768                 $result = db_query($link, "SELECT DISTINCT feed_id FROM ttrss_user_entries
2769                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2770
2771                 while ($line = db_fetch_assoc($result)) {
2772                         ccache_update($link, $line["feed_id"], $owner_uid);
2773                 }
2774         }
2775
2776         function get_article_tags($link, $id, $owner_uid = 0, $tag_cache = false) {
2777
2778                 $a_id = db_escape_string($id);
2779
2780                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2781
2782                 $query = "SELECT DISTINCT tag_name,
2783                         owner_uid as owner FROM
2784                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
2785                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
2786
2787                 $obj_id = md5("TAGS:$owner_uid:$id");
2788                 $tags = array();
2789
2790                 /* check cache first */
2791
2792                 if ($tag_cache === false) {
2793                         $result = db_query($link, "SELECT tag_cache FROM ttrss_user_entries
2794                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2795
2796                         $tag_cache = db_fetch_result($result, 0, "tag_cache");
2797                 }
2798
2799                 if ($tag_cache) {
2800                         $tags = explode(",", $tag_cache);
2801                 } else {
2802
2803                         /* do it the hard way */
2804
2805                         $tmp_result = db_query($link, $query);
2806
2807                         while ($tmp_line = db_fetch_assoc($tmp_result)) {
2808                                 array_push($tags, $tmp_line["tag_name"]);
2809                         }
2810
2811                         /* update the cache */
2812
2813                         $tags_str = db_escape_string(join(",", $tags));
2814
2815                         db_query($link, "UPDATE ttrss_user_entries
2816                                 SET tag_cache = '$tags_str' WHERE ref_id = '$id'
2817                                 AND owner_uid = $owner_uid");
2818                 }
2819
2820                 return $tags;
2821         }
2822
2823         function trim_array($array) {
2824                 $tmp = $array;
2825                 array_walk($tmp, 'trim');
2826                 return $tmp;
2827         }
2828
2829         function tag_is_valid($tag) {
2830                 if ($tag == '') return false;
2831                 if (preg_match("/^[0-9]*$/", $tag)) return false;
2832                 if (mb_strlen($tag) > 250) return false;
2833
2834                 if (function_exists('iconv')) {
2835                         $tag = iconv("utf-8", "utf-8", $tag);
2836                 }
2837
2838                 if (!$tag) return false;
2839
2840                 return true;
2841         }
2842
2843         function render_login_form($link, $form_id = 0) {
2844                 switch ($form_id) {
2845                 case 0:
2846                         require_once "login_form.php";
2847                         break;
2848                 case 1:
2849                         require_once "mobile/login_form.php";
2850                         break;
2851                 }
2852                 exit;
2853         }
2854
2855         // from http://developer.apple.com/internet/safari/faq.html
2856         function no_cache_incantation() {
2857                 header("Expires: Mon, 22 Dec 1980 00:00:00 GMT"); // Happy birthday to me :)
2858                 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
2859                 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); // HTTP/1.1
2860                 header("Cache-Control: post-check=0, pre-check=0", false);
2861                 header("Pragma: no-cache"); // HTTP/1.0
2862         }
2863
2864         function format_warning($msg, $id = "") {
2865                 global $link;
2866                 return "<div class=\"warning\" id=\"$id\">
2867                         <img src=\"".theme_image($link, "images/sign_excl.svg")."\">$msg</div>";
2868         }
2869
2870         function format_notice($msg, $id = "") {
2871                 global $link;
2872                 return "<div class=\"notice\" id=\"$id\">
2873                         <img src=\"".theme_image($link, "images/sign_info.svg")."\">$msg</div>";
2874         }
2875
2876         function format_error($msg, $id = "") {
2877                 global $link;
2878                 return "<div class=\"error\" id=\"$id\">
2879                         <img src=\"".theme_image($link, "images/sign_excl.svg")."\">$msg</div>";
2880         }
2881
2882         function print_notice($msg) {
2883                 return print format_notice($msg);
2884         }
2885
2886         function print_warning($msg) {
2887                 return print format_warning($msg);
2888         }
2889
2890         function print_error($msg) {
2891                 return print format_error($msg);
2892         }
2893
2894
2895         function T_sprintf() {
2896                 $args = func_get_args();
2897                 return vsprintf(__(array_shift($args)), $args);
2898         }
2899
2900         function format_inline_player($link, $url, $ctype) {
2901
2902                 $entry = "";
2903
2904                 if (strpos($ctype, "audio/") === 0) {
2905
2906                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
2907                                 strpos($_SERVER['HTTP_USER_AGENT'], "Chrome") !== false ||
2908                                 strpos($_SERVER['HTTP_USER_AGENT'], "Safari") !== false )) {
2909
2910                                 $id = 'AUDIO-' . uniqid();
2911
2912                                 $entry .= "<audio id=\"$id\"\" controls>
2913                                         <source type=\"$ctype\" src=\"$url\"></source>
2914                                         </audio>";
2915
2916                                 $entry .= "<span onclick=\"player(this)\"
2917                                         title=\"".__("Click to play")."\" status=\"0\"
2918                                         class=\"player\" audio-id=\"$id\">".__("Play")."</span>";
2919
2920                         } else {
2921
2922                                 $entry .= "<object type=\"application/x-shockwave-flash\"
2923                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
2924                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
2925                                         <param name=\"movie\"
2926                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
2927                                         </object>";
2928                         }
2929
2930                         if ($entry) $entry .= "&nbsp;" . basename($url);
2931
2932                         return $entry;
2933
2934                 }
2935
2936                 return "";
2937
2938 /*              $filename = substr($url, strrpos($url, "/")+1);
2939
2940                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
2941                         $filename . " (" . $ctype . ")" . "</a>"; */
2942
2943         }
2944
2945         function format_article($link, $id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
2946                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2947
2948                 $rv = array();
2949
2950                 $rv['id'] = $id;
2951
2952                 /* we can figure out feed_id from article id anyway, why do we
2953                  * pass feed_id here? let's ignore the argument :( */
2954
2955                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
2956                         WHERE ref_id = '$id'");
2957
2958                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
2959
2960                 $rv['feed_id'] = $feed_id;
2961
2962                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
2963
2964                 $result = db_query($link, "SELECT rtl_content, always_display_enclosures, cache_content FROM ttrss_feeds
2965                         WHERE id = '$feed_id' AND owner_uid = $owner_uid");
2966
2967                 if (db_num_rows($result) == 1) {
2968                         $rtl_content = sql_bool_to_bool(db_fetch_result($result, 0, "rtl_content"));
2969                         $always_display_enclosures = sql_bool_to_bool(db_fetch_result($result, 0, "always_display_enclosures"));
2970                         $cache_content = sql_bool_to_bool(db_fetch_result($result, 0, "cache_content"));
2971                 } else {
2972                         $rtl_content = false;
2973                         $always_display_enclosures = false;
2974                         $cache_content = false;
2975                 }
2976
2977                 if ($rtl_content) {
2978                         $rtl_tag = "dir=\"RTL\"";
2979                         $rtl_class = "RTL";
2980                 } else {
2981                         $rtl_tag = "";
2982                         $rtl_class = "";
2983                 }
2984
2985                 if ($mark_as_read) {
2986                         $result = db_query($link, "UPDATE ttrss_user_entries
2987                                 SET unread = false,last_read = NOW()
2988                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2989
2990                         ccache_update($link, $feed_id, $owner_uid);
2991                 }
2992
2993                 $result = db_query($link, "SELECT id,title,link,content,feed_id,comments,int_id,
2994                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
2995                         (SELECT icon_url FROM ttrss_feeds WHERE id = feed_id) as icon_url,
2996                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
2997                         num_comments,
2998                         tag_cache,
2999                         author,
3000                         orig_feed_id,
3001                         note,
3002                         cached_content
3003                         FROM ttrss_entries,ttrss_user_entries
3004                         WHERE   id = '$id' AND ref_id = id AND owner_uid = $owner_uid");
3005
3006                 if ($result) {
3007
3008                         $line = db_fetch_assoc($result);
3009
3010                         if ($line["icon_url"]) {
3011                                 $feed_icon = "<img src=\"" . $line["icon_url"] . "\">";
3012                         } else {
3013                                 $feed_icon = "&nbsp;";
3014                         }
3015
3016                         $feed_site_url = $line['site_url'];
3017
3018                         $num_comments = $line["num_comments"];
3019                         $entry_comments = "";
3020
3021                         if ($num_comments > 0) {
3022                                 if ($line["comments"]) {
3023                                         $comments_url = htmlspecialchars($line["comments"]);
3024                                 } else {
3025                                         $comments_url = htmlspecialchars($line["link"]);
3026                                 }
3027                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
3028                         } else {
3029                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
3030                                         $entry_comments = "<a target='_blank' href=\"".htmlspecialchars($line["comments"])."\">comments</a>";
3031                                 }
3032                         }
3033
3034                         if ($zoom_mode) {
3035                                 header("Content-Type: text/html");
3036                                 $rv['content'] .= "<html><head>
3037                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
3038                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
3039                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
3040                                         </head><body>";
3041                         }
3042
3043                         $title_escaped = htmlspecialchars($line['title']);
3044
3045                         $rv['content'] .= "<div id=\"PTITLE-$id\" style=\"display : none\">" .
3046                                 truncate_string(strip_tags($line['title']), 15) . "</div>";
3047
3048                         $rv['content'] .= "<div id=\"PTITLE-FULL-$id\" style=\"display : none\">" .
3049                                 strip_tags($line['title']) . "</div>";
3050
3051                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
3052
3053                         $rv['content'] .= "<div onclick=\"return postClicked(event, $id)\"
3054                                 class=\"postHeader\" id=\"POSTHDR-$id\">";
3055
3056                         $entry_author = $line["author"];
3057
3058                         if ($entry_author) {
3059                                 $entry_author = __(" - ") . $entry_author;
3060                         }
3061
3062                         $parsed_updated = make_local_datetime($link, $line["updated"], true,
3063                                 $owner_uid, true);
3064
3065                         $rv['content'] .= "<div class=\"postDate$rtl_class\">$parsed_updated</div>";
3066
3067                         if ($line["link"]) {
3068                                 $rv['content'] .= "<div class='postTitle'><a target='_blank'
3069                                         title=\"".htmlspecialchars($line['title'])."\"
3070                                         href=\"" .
3071                                         htmlspecialchars($line["link"]) . "\">" .
3072                                         $line["title"] .
3073                                         "<span class='author'>$entry_author</span></a></div>";
3074                         } else {
3075                                 $rv['content'] .= "<div class='postTitle'>" . $line["title"] . "$entry_author</div>";
3076                         }
3077
3078                         $tag_cache = $line["tag_cache"];
3079
3080                         if (!$tag_cache)
3081                                 $tags = get_article_tags($link, $id, $owner_uid);
3082                         else
3083                                 $tags = explode(",", $tag_cache);
3084
3085                         $tags_str = format_tags_string($tags, $id);
3086                         $tags_str_full = join(", ", $tags);
3087
3088                         if (!$tags_str_full) $tags_str_full = __("no tags");
3089
3090                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
3091
3092                         $rv['content'] .= "<div class='postTags' style='float : right'>
3093                                 <img src='".theme_image($link, 'images/tag.png')."'
3094                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
3095
3096                         if (!$zoom_mode) {
3097                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
3098                                         <a title=\"".__('Edit tags for this article')."\"
3099                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
3100
3101                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
3102                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
3103                                         position=\"below\">$tags_str_full</div>";
3104
3105                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/art-zoom.png')."\"
3106                                                 class='tagsPic' style=\"cursor : pointer\"
3107                                                 onclick=\"postOpenInNewTab(event, $id)\"
3108                                                 alt='Zoom' title='".__('Open article in new tab')."'>";
3109
3110                                 global $pluginhost;
3111
3112                                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_ARTICLE_BUTTON) as $p) {
3113                                         $rv['content'] .= $p->hook_article_button($line);
3114                                 }
3115
3116                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/close_article.png')."\"
3117                                                 class='tagsPic' style=\"cursor : pointer\"
3118                                                 onclick=\"closeArticlePanel($id)\"
3119                                                 title='".__('Close article')."'>";
3120
3121                         } else {
3122                                 $tags_str = strip_tags($tags_str);
3123                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
3124                         }
3125                         $rv['content'] .= "</div>";
3126                         $rv['content'] .= "<div clear='both'>$entry_comments</div>";
3127
3128                         if ($line["orig_feed_id"]) {
3129
3130                                 $tmp_result = db_query($link, "SELECT * FROM ttrss_archived_feeds
3131                                         WHERE id = ".$line["orig_feed_id"]);
3132
3133                                 if (db_num_rows($tmp_result) != 0) {
3134
3135                                         $rv['content'] .= "<div clear='both'>";
3136                                         $rv['content'] .= __("Originally from:");
3137
3138                                         $rv['content'] .= "&nbsp;";
3139
3140                                         $tmp_line = db_fetch_assoc($tmp_result);
3141
3142                                         $rv['content'] .= "<a target='_blank'
3143                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
3144                                                 $tmp_line['title'] . "</a>";
3145
3146                                         $rv['content'] .= "&nbsp;";
3147
3148                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3149                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.svg'></a>";
3150
3151                                         $rv['content'] .= "</div>";
3152                                 }
3153                         }
3154
3155                         $rv['content'] .= "</div>";
3156
3157                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3158                                 if ($line['note']) {
3159                                         $rv['content'] .= format_article_note($id, $line['note'], !$zoom_mode);
3160                                 }
3161                         $rv['content'] .= "</div>";
3162
3163                         $rv['content'] .= "<div class=\"postIcon\">" .
3164                                 "<a target=\"_blank\" title=\"".__("Visit the website")."\"$
3165                                 href=\"".htmlspecialchars($feed_site_url)."\">".
3166                                 $feed_icon . "</a></div>";
3167
3168                         $rv['content'] .= "<div class=\"postContent\">";
3169
3170                         // N-grams
3171
3172                         if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_RELATED_THRESHOLD')) {
3173
3174                                 $ngram_result = db_query($link, "SELECT id,title FROM
3175                                                 ttrss_entries,ttrss_user_entries
3176                                         WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
3177                                                 AND similarity(title, '$title_escaped') >= "._NGRAM_TITLE_RELATED_THRESHOLD."
3178                                                 AND title != '$title_escaped'
3179                                                 AND owner_uid = $owner_uid");
3180
3181                                 if (db_num_rows($ngram_result) > 0) {
3182                                         $rv['content'] .= "<div dojoType=\"dijit.form.DropDownButton\">".
3183                                                 "<span>" . __('Related')."</span>";
3184                                         $rv['content'] .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3185
3186                                         while ($nline = db_fetch_assoc($ngram_result)) {
3187                                                 $rv['content'] .= "<div onclick=\"hlOpenInNewTab(null,".$nline['id'].")\"
3188                                                         dojoType=\"dijit.MenuItem\">".$nline['title']."</div>";
3189
3190                                         }
3191                                         $rv['content'] .= "</div></div><br/";
3192                                 }
3193                         }
3194
3195                         if ($cache_content && $line["cached_content"] != "") {
3196                                 $line["content"] =& $line["cached_content"];
3197                         }
3198
3199                         $article_content = sanitize($link, $line["content"], false, $owner_uid,
3200                                 $feed_site_url);
3201
3202                         $rv['content'] .= $article_content;
3203
3204                         $rv['content'] .= format_article_enclosures($link, $id,
3205                                 $always_display_enclosures, $article_content);
3206
3207                         $rv['content'] .= "</div>";
3208
3209                         $rv['content'] .= "</div>";
3210
3211                 }
3212
3213                 if ($zoom_mode) {
3214                         $rv['content'] .= "
3215                                 <div style=\"text-align : center\">
3216                                 <button onclick=\"return window.close()\">".
3217                                         __("Close this window")."</button></div>";
3218                         $rv['content'] .= "</body></html>";
3219                 }
3220
3221                 return $rv;
3222
3223         }
3224
3225         function print_checkpoint($n, $s) {
3226                 $ts = getmicrotime();
3227                 echo sprintf("<!-- CP[$n] %.4f seconds -->", $ts - $s);
3228                 return $ts;
3229         }
3230
3231         function sanitize_tag($tag) {
3232                 $tag = trim($tag);
3233
3234                 $tag = mb_strtolower($tag, 'utf-8');
3235
3236                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3237
3238 //              $tag = str_replace('"', "", $tag);
3239 //              $tag = str_replace("+", " ", $tag);
3240                 $tag = str_replace("technorati tag: ", "", $tag);
3241
3242                 return $tag;
3243         }
3244
3245         function get_self_url_prefix() {
3246                 if (strrpos(SELF_URL_PATH, "/") === strlen(SELF_URL_PATH)-1) {
3247                         return substr(SELF_URL_PATH, 0, strlen(SELF_URL_PATH)-1);
3248                 } else {
3249                         return SELF_URL_PATH;
3250                 }
3251         }
3252
3253         /**
3254          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3255          *
3256          * @return string The Mozilla Firefox feed adding URL.
3257          */
3258         function add_feed_url() {
3259                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3260
3261                 $url_path = get_self_url_prefix() .
3262                         "/public.php?op=subscribe&feed_url=%s";
3263                 return $url_path;
3264         } // function add_feed_url
3265
3266         function encrypt_password($pass, $salt = '', $mode2 = false) {
3267                 if ($salt && $mode2) {
3268                         return "MODE2:" . hash('sha256', $salt . $pass);
3269                 } else if ($salt) {
3270                         return "SHA1X:" . sha1("$salt:$pass");
3271                 } else {
3272                         return "SHA1:" . sha1($pass);
3273                 }
3274         } // function encrypt_password
3275
3276         function load_filters($link, $feed_id, $owner_uid, $action_id = false) {
3277                 $filters = array();
3278
3279                 $cat_id = (int)getFeedCategory($link, $feed_id);
3280
3281                 $result = db_query($link, "SELECT * FROM ttrss_filters2 WHERE
3282                         owner_uid = $owner_uid AND enabled = true");
3283
3284                 $check_cats = join(",", array_merge(
3285                         getParentCategories($link, $cat_id, $owner_uid),
3286                         array($cat_id)));
3287
3288                 while ($line = db_fetch_assoc($result)) {
3289                         $filter_id = $line["id"];
3290
3291                         $result2 = db_query($link, "SELECT
3292                                 r.reg_exp, r.feed_id, r.cat_id, r.cat_filter, t.name AS type_name
3293                                 FROM ttrss_filters2_rules AS r,
3294                                 ttrss_filter_types AS t
3295                                 WHERE
3296                                         (cat_id IS NULL OR cat_id IN ($check_cats)) AND
3297                                         (feed_id IS NULL OR feed_id = '$feed_id') AND
3298                                         filter_type = t.id AND filter_id = '$filter_id'");
3299
3300                         $rules = array();
3301                         $actions = array();
3302
3303                         while ($rule_line = db_fetch_assoc($result2)) {
3304 #                               print_r($rule_line);
3305
3306                                 $rule = array();
3307                                 $rule["reg_exp"] = $rule_line["reg_exp"];
3308                                 $rule["type"] = $rule_line["type_name"];
3309
3310                                 array_push($rules, $rule);
3311                         }
3312
3313                         $result2 = db_query($link, "SELECT a.action_param,t.name AS type_name
3314                                 FROM ttrss_filters2_actions AS a,
3315                                 ttrss_filter_actions AS t
3316                                 WHERE
3317                                         action_id = t.id AND filter_id = '$filter_id'");
3318
3319                         while ($action_line = db_fetch_assoc($result2)) {
3320 #                               print_r($action_line);
3321
3322                                 $action = array();
3323                                 $action["type"] = $action_line["type_name"];
3324                                 $action["param"] = $action_line["action_param"];
3325
3326                                 array_push($actions, $action);
3327                         }
3328
3329
3330                         $filter = array();
3331                         $filter["match_any_rule"] = sql_bool_to_bool($line["match_any_rule"]);
3332                         $filter["rules"] = $rules;
3333                         $filter["actions"] = $actions;
3334
3335                         if (count($rules) > 0 && count($actions) > 0) {
3336                                 array_push($filters, $filter);
3337                         }
3338                 }
3339
3340                 return $filters;
3341         }
3342
3343         function get_score_pic($score) {
3344                 if ($score > 100) {
3345                         return "score_high.png";
3346                 } else if ($score > 0) {
3347                         return "score_half_high.png";
3348                 } else if ($score < -100) {
3349                         return "score_low.png";
3350                 } else if ($score < 0) {
3351                         return "score_half_low.png";
3352                 } else {
3353                         return "score_neutral.png";
3354                 }
3355         }
3356
3357         function feed_has_icon($id) {
3358                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3359         }
3360
3361         function init_connection($link) {
3362                 if ($link) {
3363
3364                         if (DB_TYPE == "pgsql") {
3365                                 pg_query($link, "set client_encoding = 'UTF-8'");
3366                                 pg_set_client_encoding("UNICODE");
3367                                 pg_query($link, "set datestyle = 'ISO, european'");
3368                                 pg_query($link, "set TIME ZONE 0");
3369                         } else {
3370                                 db_query($link, "SET time_zone = '+0:0'");
3371
3372                                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
3373                                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
3374                                 }
3375                         }
3376
3377                         global $pluginhost;
3378
3379                         $pluginhost = new PluginHost($link);
3380                         $pluginhost->load(PLUGINS, $pluginhost::KIND_ALL);
3381
3382                         return true;
3383                 } else {
3384                         print "Unable to connect to database:" . db_last_error();
3385                         return false;
3386                 }
3387         }
3388
3389         function format_tags_string($tags, $id) {
3390
3391                 $tags_str = "";
3392                 $tags_nolinks_str = "";
3393
3394                 $num_tags = 0;
3395
3396                 $tag_limit = 6;
3397
3398                 $formatted_tags = array();
3399
3400                 foreach ($tags as $tag) {
3401                         $num_tags++;
3402                         $tag_escaped = str_replace("'", "\\'", $tag);
3403
3404                         if (mb_strlen($tag) > 30) {
3405                                 $tag = truncate_string($tag, 30);
3406                         }
3407
3408                         $tag_str = "<a href=\"javascript:viewfeed('$tag_escaped')\">$tag</a>";
3409
3410                         array_push($formatted_tags, $tag_str);
3411
3412                         $tmp_tags_str = implode(", ", $formatted_tags);
3413
3414                         if ($num_tags == $tag_limit || mb_strlen($tmp_tags_str) > 150) {
3415                                 break;
3416                         }
3417                 }
3418
3419                 $tags_str = implode(", ", $formatted_tags);
3420
3421                 if ($num_tags < count($tags)) {
3422                         $tags_str .= ", &hellip;";
3423                 }
3424
3425                 if ($num_tags == 0) {
3426                         $tags_str = __("no tags");
3427                 }
3428
3429                 return $tags_str;
3430
3431         }
3432
3433         function format_article_labels($labels, $id) {
3434
3435                 $labels_str = "";
3436
3437                 foreach ($labels as $l) {
3438                         $labels_str .= sprintf("<span class='hlLabelRef'
3439                                 style='color : %s; background-color : %s'>%s</span>",
3440                                         $l[2], $l[3], $l[1]);
3441                         }
3442
3443                 return $labels_str;
3444
3445         }
3446
3447         function format_article_note($id, $note, $allow_edit = true) {
3448
3449                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
3450                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
3451                         ($allow_edit ? __('(edit note)') : "")."</div>$note</div>";
3452
3453                 return $str;
3454         }
3455
3456         function toggle_collapse_cat($link, $cat_id, $mode) {
3457                 if ($cat_id > 0) {
3458                         $mode = bool_to_sql_bool($mode);
3459
3460                         db_query($link, "UPDATE ttrss_feed_categories SET
3461                                 collapsed = $mode WHERE id = '$cat_id' AND owner_uid = " .
3462                                 $_SESSION["uid"]);
3463                 } else {
3464                         $pref_name = '';
3465
3466                         switch ($cat_id) {
3467                         case -1:
3468                                 $pref_name = '_COLLAPSED_SPECIAL';
3469                                 break;
3470                         case -2:
3471                                 $pref_name = '_COLLAPSED_LABELS';
3472                                 break;
3473                         case 0:
3474                                 $pref_name = '_COLLAPSED_UNCAT';
3475                                 break;
3476                         }
3477
3478                         if ($pref_name) {
3479                                 if ($mode) {
3480                                         set_pref($link, $pref_name, 'true');
3481                                 } else {
3482                                         set_pref($link, $pref_name, 'false');
3483                                 }
3484                         }
3485                 }
3486         }
3487
3488
3489         function get_feed_category($link, $feed_cat, $parent_cat_id = false) {
3490                 if ($parent_cat_id) {
3491                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3492                         $parent_insert = "'$parent_cat_id'";
3493                 } else {
3494                         $parent_qpart = "parent_cat IS NULL";
3495                         $parent_insert = "NULL";
3496                 }
3497
3498                 $result = db_query($link,
3499                         "SELECT id FROM ttrss_feed_categories
3500                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3501
3502                 if (db_num_rows($result) == 0) {
3503                         return false;
3504                 } else {
3505                         return db_fetch_result($result, 0, "id");
3506                 }
3507         }
3508
3509         function add_feed_category($link, $feed_cat, $parent_cat_id = false) {
3510
3511                 if (!$feed_cat) return false;
3512
3513                 db_query($link, "BEGIN");
3514
3515                 if ($parent_cat_id) {
3516                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3517                         $parent_insert = "'$parent_cat_id'";
3518                 } else {
3519                         $parent_qpart = "parent_cat IS NULL";
3520                         $parent_insert = "NULL";
3521                 }
3522
3523                 $result = db_query($link,
3524                         "SELECT id FROM ttrss_feed_categories
3525                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3526
3527                 if (db_num_rows($result) == 0) {
3528
3529                         $result = db_query($link,
3530                                 "INSERT INTO ttrss_feed_categories (owner_uid,title,parent_cat)
3531                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat', $parent_insert)");
3532
3533                         db_query($link, "COMMIT");
3534
3535                         return true;
3536                 }
3537
3538                 return false;
3539         }
3540
3541         function getArticleFeed($link, $id) {
3542                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3543                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3544
3545                 if (db_num_rows($result) != 0) {
3546                         return db_fetch_result($result, 0, "feed_id");
3547                 } else {
3548                         return 0;
3549                 }
3550         }
3551
3552         /**
3553          * Fixes incomplete URLs by prepending "http://".
3554          * Also replaces feed:// with http://, and
3555          * prepends a trailing slash if the url is a domain name only.
3556          *
3557          * @param string $url Possibly incomplete URL
3558          *
3559          * @return string Fixed URL.
3560          */
3561         function fix_url($url) {
3562                 if (strpos($url, '://') === false) {
3563                         $url = 'http://' . $url;
3564                 } else if (substr($url, 0, 5) == 'feed:') {
3565                         $url = 'http:' . substr($url, 5);
3566                 }
3567
3568                 //prepend slash if the URL has no slash in it
3569                 // "http://www.example" -> "http://www.example/"
3570                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
3571                         $url .= '/';
3572                 }
3573
3574                 if ($url != "http:///")
3575                         return $url;
3576                 else
3577                         return '';
3578         }
3579
3580         function validate_feed_url($url) {
3581                 $parts = parse_url($url);
3582
3583                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
3584
3585         }
3586
3587         function get_article_enclosures($link, $id) {
3588
3589                 $query = "SELECT * FROM ttrss_enclosures
3590                         WHERE post_id = '$id' AND content_url != ''";
3591
3592                 $rv = array();
3593
3594                 $result = db_query($link, $query);
3595
3596                 if (db_num_rows($result) > 0) {
3597                         while ($line = db_fetch_assoc($result)) {
3598                                 array_push($rv, $line);
3599                         }
3600                 }
3601
3602                 return $rv;
3603         }
3604
3605         function save_email_address($link, $email) {
3606                 // FIXME: implement persistent storage of emails
3607
3608                 if (!$_SESSION['stored_emails'])
3609                         $_SESSION['stored_emails'] = array();
3610
3611                 if (!in_array($email, $_SESSION['stored_emails']))
3612                         array_push($_SESSION['stored_emails'], $email);
3613         }
3614
3615
3616         function get_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
3617
3618                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3619
3620                 $sql_is_cat = bool_to_sql_bool($is_cat);
3621
3622                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
3623                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
3624                         AND owner_uid = " . $owner_uid);
3625
3626                 if (db_num_rows($result) == 1) {
3627                         return db_fetch_result($result, 0, "access_key");
3628                 } else {
3629                         $key = db_escape_string(sha1(uniqid(rand(), true)));
3630
3631                         $result = db_query($link, "INSERT INTO ttrss_access_keys
3632                                 (access_key, feed_id, is_cat, owner_uid)
3633                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
3634
3635                         return $key;
3636                 }
3637                 return false;
3638         }
3639
3640         function get_feeds_from_html($url, $content)
3641         {
3642                 $url     = fix_url($url);
3643                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
3644
3645                 libxml_use_internal_errors(true);
3646
3647                 $doc = new DOMDocument();
3648                 $doc->loadHTML($content);
3649                 $xpath = new DOMXPath($doc);
3650                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
3651                 $feedUrls = array();
3652                 foreach ($entries as $entry) {
3653                         if ($entry->hasAttribute('href')) {
3654                                 $title = $entry->getAttribute('title');
3655                                 if ($title == '') {
3656                                         $title = $entry->getAttribute('type');
3657                                 }
3658                                 $feedUrl = rewrite_relative_url(
3659                                         $baseUrl, $entry->getAttribute('href')
3660                                 );
3661                                 $feedUrls[$feedUrl] = $title;
3662                         }
3663                 }
3664                 return $feedUrls;
3665         }
3666
3667         function is_html($content) {
3668                 return preg_match("/<html|DOCTYPE html/i", substr($content, 0, 20)) !== 0;
3669         }
3670
3671         function url_is_html($url, $login = false, $pass = false) {
3672                 return is_html(fetch_file_contents($url, false, $login, $pass));
3673         }
3674
3675         function print_label_select($link, $name, $value, $attributes = "") {
3676
3677                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
3678                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
3679
3680                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
3681                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
3682
3683                 while ($line = db_fetch_assoc($result)) {
3684
3685                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
3686
3687                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
3688                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
3689
3690                 }
3691
3692 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
3693
3694                 print "</select>";
3695
3696
3697         }
3698
3699         function format_article_enclosures($link, $id, $always_display_enclosures,
3700                                         $article_content) {
3701
3702                 $result = get_article_enclosures($link, $id);
3703                 $rv = '';
3704
3705                 if (count($result) > 0) {
3706
3707                         $entries_html = array();
3708                         $entries = array();
3709                         $entries_inline = array();
3710
3711                         foreach ($result as $line) {
3712
3713                                 $url = $line["content_url"];
3714                                 $ctype = $line["content_type"];
3715
3716                                 if (!$ctype) $ctype = __("unknown type");
3717
3718                                 $filename = substr($url, strrpos($url, "/")+1);
3719
3720                                 $player = format_inline_player($link, $url, $ctype);
3721
3722                                 if ($player) array_push($entries_inline, $player);
3723
3724 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3725 #                                       $filename . " (" . $ctype . ")" . "</a>";
3726
3727                                 $entry = "<div onclick=\"window.open('".htmlspecialchars($url)."')\"
3728                                         dojoType=\"dijit.MenuItem\">$filename ($ctype)</div>";
3729
3730                                 array_push($entries_html, $entry);
3731
3732                                 $entry = array();
3733
3734                                 $entry["type"] = $ctype;
3735                                 $entry["filename"] = $filename;
3736                                 $entry["url"] = $url;
3737
3738                                 array_push($entries, $entry);
3739                         }
3740
3741                         if (!get_pref($link, "STRIP_IMAGES")) {
3742                                 if ($always_display_enclosures ||
3743                                                         !preg_match("/<img/i", $article_content)) {
3744
3745                                         foreach ($entries as $entry) {
3746
3747                                                 if (preg_match("/image/", $entry["type"]) ||
3748                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
3749
3750                                                                 $rv .= "<p><img
3751                                                                 alt=\"".htmlspecialchars($entry["filename"])."\"
3752                                                                 src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
3753
3754                                                 }
3755                                         }
3756                                 }
3757                         }
3758
3759                         if (count($entries_inline) > 0) {
3760                                 $rv .= "<hr clear='both'/>";
3761                                 foreach ($entries_inline as $entry) { $rv .= $entry; };
3762                                 $rv .= "<hr clear='both'/>";
3763                         }
3764
3765                         $rv .= "<br/><div dojoType=\"dijit.form.DropDownButton\">".
3766                                 "<span>" . __('Attachments')."</span>";
3767                         $rv .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3768
3769                         foreach ($entries_html as $entry) { $rv .= $entry; };
3770
3771                         $rv .= "</div></div>";
3772                 }
3773
3774                 return $rv;
3775         }
3776
3777         function getLastArticleId($link) {
3778                 $result = db_query($link, "SELECT MAX(ref_id) AS id FROM ttrss_user_entries
3779                         WHERE owner_uid = " . $_SESSION["uid"]);
3780
3781                 if (db_num_rows($result) == 1) {
3782                         return db_fetch_result($result, 0, "id");
3783                 } else {
3784                         return -1;
3785                 }
3786         }
3787
3788         function build_url($parts) {
3789                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
3790         }
3791
3792         /**
3793          * Converts a (possibly) relative URL to a absolute one.
3794          *
3795          * @param string $url     Base URL (i.e. from where the document is)
3796          * @param string $rel_url Possibly relative URL in the document
3797          *
3798          * @return string Absolute URL
3799          */
3800         function rewrite_relative_url($url, $rel_url) {
3801                 if (strpos($rel_url, "magnet:") === 0) {
3802                         return $rel_url;
3803                 } else if (strpos($rel_url, "://") !== false) {
3804                         return $rel_url;
3805                 } else if (strpos($rel_url, "//") === 0) {
3806                         # protocol-relative URL (rare but they exist)
3807                         return $rel_url;
3808                 } else if (strpos($rel_url, "/") === 0)
3809                 {
3810                         $parts = parse_url($url);
3811                         $parts['path'] = $rel_url;
3812
3813                         return build_url($parts);
3814
3815                 } else {
3816                         $parts = parse_url($url);
3817                         if (!isset($parts['path'])) {
3818                                 $parts['path'] = '/';
3819                         }
3820                         $dir = $parts['path'];
3821                         if (substr($dir, -1) !== '/') {
3822                                 $dir = dirname($parts['path']);
3823                                 $dir !== '/' && $dir .= '/';
3824                         }
3825                         $parts['path'] = $dir . $rel_url;
3826
3827                         return build_url($parts);
3828                 }
3829         }
3830
3831         function sphinx_search($query, $offset = 0, $limit = 30) {
3832                 require_once 'lib/sphinxapi.php';
3833
3834                 $sphinxClient = new SphinxClient();
3835
3836                 $sphinxClient->SetServer('localhost', 9312);
3837                 $sphinxClient->SetConnectTimeout(1);
3838
3839                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
3840                         'feed_title' => 20));
3841
3842                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
3843                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
3844                 $sphinxClient->SetLimits($offset, $limit, 1000);
3845                 $sphinxClient->SetArrayResult(false);
3846                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
3847
3848                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
3849
3850                 $ids = array();
3851
3852                 if (is_array($result['matches'])) {
3853                         foreach (array_keys($result['matches']) as $int_id) {
3854                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
3855                                 array_push($ids, $ref_id);
3856                         }
3857                 }
3858
3859                 return $ids;
3860         }
3861
3862         function cleanup_tags($link, $days = 14, $limit = 1000) {
3863
3864                 if (DB_TYPE == "pgsql") {
3865                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
3866                 } else if (DB_TYPE == "mysql") {
3867                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
3868                 }
3869
3870                 $tags_deleted = 0;
3871
3872                 while ($limit > 0) {
3873                         $limit_part = 500;
3874
3875                         $query = "SELECT ttrss_tags.id AS id
3876                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
3877                                 WHERE post_int_id = int_id AND $interval_query AND
3878                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
3879
3880                         $result = db_query($link, $query);
3881
3882                         $ids = array();
3883
3884                         while ($line = db_fetch_assoc($result)) {
3885                                 array_push($ids, $line['id']);
3886                         }
3887
3888                         if (count($ids) > 0) {
3889                                 $ids = join(",", $ids);
3890                                 print ".";
3891
3892                                 $tmp_result = db_query($link, "DELETE FROM ttrss_tags WHERE id IN ($ids)");
3893                                 $tags_deleted += db_affected_rows($link, $tmp_result);
3894                         } else {
3895                                 break;
3896                         }
3897
3898                         $limit -= $limit_part;
3899                 }
3900
3901                 print "\n";
3902
3903                 return $tags_deleted;
3904         }
3905
3906         function print_user_stylesheet($link) {
3907                 $value = get_pref($link, 'USER_STYLESHEET');
3908
3909                 if ($value) {
3910                         print "<style type=\"text/css\">";
3911                         print str_replace("<br/>", "\n", $value);
3912                         print "</style>";
3913                 }
3914
3915         }
3916
3917         function rewrite_urls($html) {
3918                 libxml_use_internal_errors(true);
3919
3920                 $charset_hack = '<head>
3921                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
3922                 </head>';
3923
3924                 $doc = new DOMDocument();
3925                 $doc->loadHTML($charset_hack . $html);
3926                 $xpath = new DOMXPath($doc);
3927
3928                 $entries = $xpath->query('//*/text()');
3929
3930                 foreach ($entries as $entry) {
3931                         if (strstr($entry->wholeText, "://") !== false) {
3932                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
3933                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
3934
3935                                 if ($text != $entry->wholeText) {
3936                                         $cdoc = new DOMDocument();
3937                                         $cdoc->loadHTML($charset_hack . $text);
3938
3939
3940                                         foreach ($cdoc->childNodes as $cnode) {
3941                                                 $cnode = $doc->importNode($cnode, true);
3942
3943                                                 if ($cnode) {
3944                                                         $entry->parentNode->insertBefore($cnode);
3945                                                 }
3946                                         }
3947
3948                                         $entry->parentNode->removeChild($entry);
3949
3950                                 }
3951                         }
3952                 }
3953
3954                 $node = $doc->getElementsByTagName('body')->item(0);
3955
3956                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
3957                 if ($node)
3958                         return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
3959                 else
3960                         return $html;
3961         }
3962
3963         function filter_to_sql($link, $filter, $owner_uid) {
3964                 $query = array();
3965
3966                 if (DB_TYPE == "pgsql")
3967                         $reg_qpart = "~";
3968                 else
3969                         $reg_qpart = "REGEXP";
3970
3971                 foreach ($filter["rules"] AS $rule) {
3972                         $regexp_valid = preg_match('/' . $rule['reg_exp'] . '/',
3973                                 $rule['reg_exp']) !== FALSE;
3974
3975                         if ($regexp_valid) {
3976
3977                                 $rule['reg_exp'] = db_escape_string($rule['reg_exp']);
3978
3979                                 switch ($rule["type"]) {
3980                                         case "title":
3981                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3982                                                         $rule['reg_exp'] . "')";
3983                                                 break;
3984                                         case "content":
3985                                                 $qpart = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
3986                                                         $rule['reg_exp'] . "')";
3987                                                 break;
3988                                         case "both":
3989                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3990                                                         $rule['reg_exp'] . "') OR LOWER(" .
3991                                                         "ttrss_entries.content) $reg_qpart LOWER('" . $rule['reg_exp'] . "')";
3992                                                 break;
3993                                         case "tag":
3994                                                 $qpart = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
3995                                                         $rule['reg_exp'] . "')";
3996                                                 break;
3997                                         case "link":
3998                                                 $qpart = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
3999                                                         $rule['reg_exp'] . "')";
4000                                                 break;
4001                                         case "author":
4002                                                 $qpart = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
4003                                                         $rule['reg_exp'] . "')";
4004                                                 break;
4005                                 }
4006
4007                                 if (isset($rule["feed_id"]) && $rule["feed_id"] > 0) {
4008                                         $qpart .= " AND feed_id = " . db_escape_string($rule["feed_id"]);
4009                                 }
4010
4011                                 if (isset($rule["cat_id"])) {
4012
4013                                         if ($rule["cat_id"] > 0) {
4014                                                 $children = getChildCategories($link, $rule["cat_id"], $owner_uid);
4015                                                 array_push($children, $rule["cat_id"]);
4016
4017                                                 $children = join(",", $children);
4018
4019                                                 $cat_qpart = "cat_id IN ($children)";
4020                                         } else {
4021                                                 $cat_qpart = "cat_id IS NULL";
4022                                         }
4023
4024                                         $qpart .= " AND $cat_qpart";
4025                                 }
4026
4027                                 array_push($query, "($qpart)");
4028
4029                         }
4030                 }
4031
4032                 if (count($query) > 0) {
4033                         return "(" . join($filter["match_any_rule"] ? "OR" : "AND", $query) . ")";
4034                 } else {
4035                         return "(false)";
4036                 }
4037         }
4038
4039         if (!function_exists('gzdecode')) {
4040                 function gzdecode($string) { // no support for 2nd argument
4041                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
4042                                 base64_encode($string));
4043                 }
4044         }
4045
4046         function get_random_bytes($length) {
4047                 if (function_exists('openssl_random_pseudo_bytes')) {
4048                         return openssl_random_pseudo_bytes($length);
4049                 } else {
4050                         $output = "";
4051
4052                         for ($i = 0; $i < $length; $i++)
4053                                 $output .= chr(mt_rand(0, 255));
4054
4055                         return $output;
4056                 }
4057         }
4058
4059         function read_stdin() {
4060                 $fp = fopen("php://stdin", "r");
4061
4062                 if ($fp) {
4063                         $line = trim(fgets($fp));
4064                         fclose($fp);
4065                         return $line;
4066                 }
4067
4068                 return null;
4069         }
4070
4071         function tmpdirname($path, $prefix) {
4072                 // Use PHP's tmpfile function to create a temporary
4073                 // directory name. Delete the file and keep the name.
4074                 $tempname = tempnam($path,$prefix);
4075                 if (!$tempname)
4076                         return false;
4077
4078                 if (!unlink($tempname))
4079                         return false;
4080
4081        return $tempname;
4082         }
4083
4084         function getFeedCategory($link, $feed) {
4085                 $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
4086                         WHERE id = '$feed'");
4087
4088                 if (db_num_rows($result) > 0) {
4089                         return db_fetch_result($result, 0, "cat_id");
4090                 } else {
4091                         return false;
4092                 }
4093
4094         }
4095
4096         function implements_interface($class, $interface) {
4097                 return in_array($interface, class_implements($class));
4098         }
4099
4100 ?>