include/functions.php

   1 <?php
   2         define('EXPECTED_CONFIG_VERSION', 26);
   3         define('SCHEMA_VERSION', 105);
   4
   5         $fetch_last_error = false;
   6         $pluginhost = false;
   7
   8         function __autoload($class) {
   9                 $class_file = str_replace("_", "/", strtolower(basename($class)));
  10
  11                 $file = dirname(__FILE__)."/../classes/$class_file.php";
  12
  13                 if (file_exists($file)) {
  14                         require $file;
  15                 }
  16
  17         }
  18
  19         mb_internal_encoding("UTF-8");
  20         date_default_timezone_set('UTC');
  21         if (defined('E_DEPRECATED')) {
  22                 error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
  23         } else {
  24                 error_reporting(E_ALL & ~E_NOTICE);
  25         }
  26
  27         require_once 'config.php';
  28
  29         if (DB_TYPE == "pgsql") {
  30                 define('SUBSTRING_FOR_DATE', 'SUBSTRING_FOR_DATE');
  31         } else {
  32                 define('SUBSTRING_FOR_DATE', 'SUBSTRING');
  33         }
  34
  35         define('THEME_VERSION_REQUIRED', 1.1);
  36
  37         /**
  38          * Return available translations names.
  39          *
  40          * @access public
  41          * @return array A array of available translations.
  42          */
  43         function get_translations() {
  44                 $tr = array(
  45                                         "auto"  => "Detect automatically",
  46                                         "ca_CA" => "Català",
  47                                         "en_US" => "English",
  48                                         "es_ES" => "Español",
  49                                         "de_DE" => "Deutsch",
  50                                         "fr_FR" => "Français",
  51                                         "hu_HU" => "Magyar (Hungarian)",
  52                                         "it_IT" => "Italiano",
  53                                         "ja_JP" => "日本語 (Japanese)",
  54                                         "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 = $_POST["language"];
  79                 } else if ($_SESSION["language"] && $_SESSION["language"] != "auto") {
  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         define('SELF_USER_AGENT', 'Tiny Tiny RSS/' . VERSION . ' (http://tt-rss.org/)');
 109         ini_set('user_agent', SELF_USER_AGENT);
 110
 111         require_once 'lib/pubsubhubbub/publisher.php';
 112         require_once 'lib/htmLawed.php';
 113
 114         $tz_offset = -1;
 115         $utc_tz = new DateTimeZone('UTC');
 116         $schema_version = false;
 117
 118         /**
 119          * Print a timestamped debug message.
 120          *
 121          * @param string $msg The debug message.
 122          * @return void
 123          */
 124         function _debug($msg) {
 125                 if (defined('QUIET') && QUIET) {
 126                         return;
 127                 }
 128                 $ts = strftime("%H:%M:%S", time());
 129                 if (function_exists('posix_getpid')) {
 130                         $ts = "$ts/" . posix_getpid();
 131                 }
 132                 print "[$ts] $msg\n";
 133         } // function _debug
 134
 135         /**
 136          * Purge a feed old posts.
 137          *
 138          * @param mixed $link A database connection.
 139          * @param mixed $feed_id The id of the purged feed.
 140          * @param mixed $purge_interval Olderness of purged posts.
 141          * @param boolean $debug Set to True to enable the debug. False by default.
 142          * @access public
 143          * @return void
 144          */
 145         function purge_feed($link, $feed_id, $purge_interval, $debug = false) {
 146
 147                 if (!$purge_interval) $purge_interval = feed_purge_interval($link, $feed_id);
 148
 149                 $rows = -1;
 150
 151                 $result = db_query($link,
 152                         "SELECT owner_uid FROM ttrss_feeds WHERE id = '$feed_id'");
 153
 154                 $owner_uid = false;
 155
 156                 if (db_num_rows($result) == 1) {
 157                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 158                 }
 159
 160                 if ($purge_interval == -1 || !$purge_interval) {
 161                         if ($owner_uid) {
 162                                 ccache_update($link, $feed_id, $owner_uid);
 163                         }
 164                         return;
 165                 }
 166
 167                 if (!$owner_uid) return;
 168
 169                 if (FORCE_ARTICLE_PURGE == 0) {
 170                         $purge_unread = get_pref($link, "PURGE_UNREAD_ARTICLES",
 171                                 $owner_uid, false);
 172                 } else {
 173                         $purge_unread = true;
 174                         $purge_interval = FORCE_ARTICLE_PURGE;
 175                 }
 176
 177                 if (!$purge_unread) $query_limit = " unread = false AND ";
 178
 179                 if (DB_TYPE == "pgsql") {
 180                         $pg_version = get_pgsql_version($link);
 181
 182                         if (preg_match("/^7\./", $pg_version) || preg_match("/^8\.0/", $pg_version)) {
 183
 184                                 $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 185                                         ttrss_entries.id = ref_id AND
 186                                         marked = false AND
 187                                         feed_id = '$feed_id' AND
 188                                         $query_limit
 189                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 190
 191                         } else {
 192
 193                                 $result = db_query($link, "DELETE FROM ttrss_user_entries
 194                                         USING ttrss_entries
 195                                         WHERE ttrss_entries.id = ref_id AND
 196                                         marked = false AND
 197                                         feed_id = '$feed_id' AND
 198                                         $query_limit
 199                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 200                         }
 201
 202                         $rows = pg_affected_rows($result);
 203
 204                 } else {
 205
 206 /*                      $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 207                                 marked = false AND feed_id = '$feed_id' AND
 208                                 (SELECT date_updated FROM ttrss_entries WHERE
 209                                         id = ref_id) < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)"); */
 210
 211                         $result = db_query($link, "DELETE FROM ttrss_user_entries
 212                                 USING ttrss_user_entries, ttrss_entries
 213                                 WHERE ttrss_entries.id = ref_id AND
 214                                 marked = false AND
 215                                 feed_id = '$feed_id' AND
 216                                 $query_limit
 217                                 ttrss_entries.date_updated < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)");
 218
 219                         $rows = mysql_affected_rows($link);
 220
 221                 }
 222
 223                 ccache_update($link, $feed_id, $owner_uid);
 224
 225                 if ($debug) {
 226                         _debug("Purged feed $feed_id ($purge_interval): deleted $rows articles");
 227                 }
 228
 229                 return $rows;
 230         } // function purge_feed
 231
 232         function feed_purge_interval($link, $feed_id) {
 233
 234                 $result = db_query($link, "SELECT purge_interval, owner_uid FROM ttrss_feeds
 235                         WHERE id = '$feed_id'");
 236
 237                 if (db_num_rows($result) == 1) {
 238                         $purge_interval = db_fetch_result($result, 0, "purge_interval");
 239                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 240
 241                         if ($purge_interval == 0) $purge_interval = get_pref($link,
 242                                 'PURGE_OLD_DAYS', $owner_uid);
 243
 244                         return $purge_interval;
 245
 246                 } else {
 247                         return -1;
 248                 }
 249         }
 250
 251         function purge_orphans($link, $do_output = false) {
 252
 253                 // purge orphaned posts in main content table
 254                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
 255                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
 256
 257                 if ($do_output) {
 258                         $rows = db_affected_rows($link, $result);
 259                         _debug("Purged $rows orphaned posts.");
 260                 }
 261         }
 262
 263         function get_feed_update_interval($link, $feed_id) {
 264                 $result = db_query($link, "SELECT owner_uid, update_interval FROM
 265                         ttrss_feeds WHERE id = '$feed_id'");
 266
 267                 if (db_num_rows($result) == 1) {
 268                         $update_interval = db_fetch_result($result, 0, "update_interval");
 269                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 270
 271                         if ($update_interval != 0) {
 272                                 return $update_interval;
 273                         } else {
 274                                 return get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $owner_uid, false);
 275                         }
 276
 277                 } else {
 278                         return -1;
 279                 }
 280         }
 281
 282         function fetch_file_contents($url, $type = false, $login = false, $pass = false, $post_query = false, $timeout = false) {
 283                 $login = urlencode($login);
 284                 $pass = urlencode($pass);
 285
 286                 global $fetch_last_error;
 287
 288                 if (function_exists('curl_init') && !ini_get("open_basedir")) {
 289                         //$ch = curl_init($url);
 290                         $ch = curl_init(geturl($url));
 291
 292                         curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout ? $timeout : 15);
 293                         curl_setopt($ch, CURLOPT_TIMEOUT, $timeout ? $timeout : 45);
 294                         //curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
 295                         curl_setopt($ch, CURLOPT_MAXREDIRS, 20);
 296                         curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
 297                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 298                         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 299                         curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 300                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 301                         curl_setopt($ch, CURLOPT_ENCODING , "gzip");
 302                         curl_setopt($ch, CURLOPT_REFERER, $url);
 303
 304                         if ($post_query) {
 305                                 curl_setopt($ch, CURLOPT_POST, true);
 306                                 curl_setopt($ch, CURLOPT_POSTFIELDS, $post_query);
 307                         }
 308
 309                         if ($login && $pass)
 310                                 curl_setopt($ch, CURLOPT_USERPWD, "$login:$pass");
 311
 312                         $contents = @curl_exec($ch);
 313
 314                         if (curl_errno($ch) === 23 || curl_errno($ch) === 61) {
 315                                 curl_setopt($ch, CURLOPT_ENCODING, 'none');
 316                                 $contents = @curl_exec($ch);
 317                         }
 318
 319                         if ($contents === false) {
 320                                 $fetch_last_error = curl_errno($ch) . " " . curl_error($ch);
 321                                 curl_close($ch);
 322                                 return false;
 323                         }
 324
 325                         $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 326                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 327
 328                         if ($http_code != 200 || $type && strpos($content_type, "$type") === false) {
 329                                 if (curl_errno($ch) != 0) {
 330                                         $fetch_last_error = curl_errno($ch) . " " . curl_error($ch);
 331                                 } else {
 332                                         $fetch_last_error = "HTTP Code: $http_code";
 333                                 }
 334                                 curl_close($ch);
 335                                 return false;
 336                         }
 337
 338                         curl_close($ch);
 339
 340                         return $contents;
 341                 } else {
 342                         if ($login && $pass ){
 343                                 $url_parts = array();
 344
 345                                 preg_match("/(^[^:]*):\/\/(.*)/", $url, $url_parts);
 346
 347                                 if ($url_parts[1] && $url_parts[2]) {
 348                                         $url = $url_parts[1] . "://$login:$pass@" . $url_parts[2];
 349                                 }
 350                         }
 351
 352                         $data = @file_get_contents($url);
 353
 354                         if (!$data && function_exists('error_get_last')) {
 355                                 $error = error_get_last();
 356                                 $fetch_last_error = $error["message"];
 357                         }
 358                         return $data;
 359                 }
 360
 361         }
 362
 363         /**
 364          * Try to determine the favicon URL for a feed.
 365          * adapted from wordpress favicon plugin by Jeff Minard (http://thecodepro.com/)
 366          * http://dev.wp-plugins.org/file/favatars/trunk/favatars.php
 367          *
 368          * @param string $url A feed or page URL
 369          * @access public
 370          * @return mixed The favicon URL, or false if none was found.
 371          */
 372         function get_favicon_url($url) {
 373
 374                 $favicon_url = false;
 375
 376                 if ($html = @fetch_file_contents($url)) {
 377
 378                         libxml_use_internal_errors(true);
 379
 380                         $doc = new DOMDocument();
 381                         $doc->loadHTML($html);
 382                         $xpath = new DOMXPath($doc);
 383
 384                         $base = $xpath->query('/html/head/base');
 385                         foreach ($base as $b) {
 386                                 $url = $b->getAttribute("href");
 387                                 break;
 388                         }
 389
 390                         $entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon"]');
 391                         if (count($entries) > 0) {
 392                                 foreach ($entries as $entry) {
 393                                         $favicon_url = rewrite_relative_url($url, $entry->getAttribute("href"));
 394                                         break;
 395                                 }
 396                         }
 397                 }
 398
 399                 if (!$favicon_url)
 400                         $favicon_url = rewrite_relative_url($url, "/favicon.ico");
 401
 402                 return $favicon_url;
 403         } // function get_favicon_url
 404
 405         function check_feed_favicon($site_url, $feed, $link) {
 406 #               print "FAVICON [$site_url]: $favicon_url\n";
 407
 408                 $icon_file = ICONS_DIR . "/$feed.ico";
 409
 410                 if (!file_exists($icon_file)) {
 411                         $favicon_url = get_favicon_url($site_url);
 412
 413                         if ($favicon_url) {
 414                                 // Limiting to "image" type misses those served with text/plain
 415                                 $contents = fetch_file_contents($favicon_url); // , "image");
 416
 417                                 if ($contents) {
 418                                         // Crude image type matching.
 419                                         // Patterns gleaned from the file(1) source code.
 420                                         if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
 421                                                 // 0       string  \000\000\001\000        MS Windows icon resource
 422                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
 423                                         }
 424                                         elseif (preg_match('/^GIF8/', $contents)) {
 425                                                 // 0       string          GIF8            GIF image data
 426                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
 427                                         }
 428                                         elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
 429                                                 // 0       string          \x89PNG\x0d\x0a\x1a\x0a         PNG image data
 430                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
 431                                         }
 432                                         elseif (preg_match('/^\xff\xd8/', $contents)) {
 433                                                 // 0       beshort         0xffd8          JPEG image data
 434                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
 435                                         }
 436                                         else {
 437                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
 438                                                 $contents = "";
 439                                         }
 440                                 }
 441
 442                                 if ($contents) {
 443                                         $fp = @fopen($icon_file, "w");
 444
 445                                         if ($fp) {
 446                                                 fwrite($fp, $contents);
 447                                                 fclose($fp);
 448                                                 chmod($icon_file, 0644);
 449                                         }
 450                                 }
 451                         }
 452                 }
 453         }
 454
 455         function print_select($id, $default, $values, $attributes = "") {
 456                 print "<select name=\"$id\" id=\"$id\" $attributes>";
 457                 foreach ($values as $v) {
 458                         if ($v == $default)
 459                                 $sel = "selected=\"1\"";
 460                          else
 461                                 $sel = "";
 462
 463                         print "<option value=\"$v\" $sel>$v</option>";
 464                 }
 465                 print "</select>";
 466         }
 467
 468         function print_select_hash($id, $default, $values, $attributes = "") {
 469                 print "<select name=\"$id\" id='$id' $attributes>";
 470                 foreach (array_keys($values) as $v) {
 471                         if ($v == $default)
 472                                 $sel = 'selected="selected"';
 473                          else
 474                                 $sel = "";
 475
 476                         print "<option $sel value=\"$v\">".$values[$v]."</option>";
 477                 }
 478
 479                 print "</select>";
 480         }
 481
 482         function print_radio($id, $default, $true_is, $values, $attributes = "") {
 483                 foreach ($values as $v) {
 484
 485                         if ($v == $default)
 486                                 $sel = "checked";
 487                          else
 488                                 $sel = "";
 489
 490                         if ($v == $true_is) {
 491                                 $sel .= " value=\"1\"";
 492                         } else {
 493                                 $sel .= " value=\"0\"";
 494                         }
 495
 496                         print "<input class=\"noborder\" dojoType=\"dijit.form.RadioButton\"
 497                                 type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 498
 499                 }
 500         }
 501
 502         function initialize_user_prefs($link, $uid, $profile = false) {
 503
 504                 $uid = db_escape_string($uid);
 505
 506                 if (!$profile) {
 507                         $profile = "NULL";
 508                         $profile_qpart = "AND profile IS NULL";
 509                 } else {
 510                         $profile_qpart = "AND profile = '$profile'";
 511                 }
 512
 513                 if (get_schema_version($link) < 63) $profile_qpart = "";
 514
 515                 db_query($link, "BEGIN");
 516
 517                 $result = db_query($link, "SELECT pref_name,def_value FROM ttrss_prefs");
 518
 519                 $u_result = db_query($link, "SELECT pref_name
 520                         FROM ttrss_user_prefs WHERE owner_uid = '$uid' $profile_qpart");
 521
 522                 $active_prefs = array();
 523
 524                 while ($line = db_fetch_assoc($u_result)) {
 525                         array_push($active_prefs, $line["pref_name"]);
 526                 }
 527
 528                 while ($line = db_fetch_assoc($result)) {
 529                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 530 //                              print "adding " . $line["pref_name"] . "<br>";
 531
 532                                 if (get_schema_version($link) < 63) {
 533                                         db_query($link, "INSERT INTO ttrss_user_prefs
 534                                                 (owner_uid,pref_name,value) VALUES
 535                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 536
 537                                 } else {
 538                                         db_query($link, "INSERT INTO ttrss_user_prefs
 539                                                 (owner_uid,pref_name,value, profile) VALUES
 540                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."', $profile)");
 541                                 }
 542
 543                         }
 544                 }
 545
 546                 db_query($link, "COMMIT");
 547
 548         }
 549
 550         function get_ssl_certificate_id() {
 551                 if ($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"]) {
 552                         return sha1($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"] .
 553                                 $_SERVER["REDIRECT_SSL_CLIENT_V_START"] .
 554                                 $_SERVER["REDIRECT_SSL_CLIENT_V_END"] .
 555                                 $_SERVER["REDIRECT_SSL_CLIENT_S_DN"]);
 556                 }
 557                 return "";
 558         }
 559
 560         function authenticate_user($link, $login, $password, $check_only = false) {
 561
 562                 if (!SINGLE_USER_MODE) {
 563
 564                         $user_id = false;
 565
 566                         global $pluginhost;
 567                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_AUTH_USER) as $plugin) {
 568
 569                                 $user_id = (int) $plugin->authenticate($login, $password);
 570
 571                                 if ($user_id) {
 572                                         $_SESSION["auth_module"] = strtolower(get_class($plugin));
 573                                         break;
 574                                 }
 575                         }
 576
 577                         if ($user_id && !$check_only) {
 578                                 $_SESSION["uid"] = $user_id;
 579
 580                                 $result = db_query($link, "SELECT login,access_level,pwd_hash FROM ttrss_users
 581                                         WHERE id = '$user_id'");
 582
 583                                 $_SESSION["name"] = db_fetch_result($result, 0, "login");
 584                                 $_SESSION["access_level"] = db_fetch_result($result, 0, "access_level");
 585                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 586
 587                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 588                                         $_SESSION["uid"]);
 589
 590                                 $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 591                                 $_SESSION["pwd_hash"] = db_fetch_result($result, 0, "pwd_hash");
 592
 593                                 $_SESSION["last_version_check"] = time();
 594
 595                                 initialize_user_prefs($link, $_SESSION["uid"]);
 596
 597                                 return true;
 598                         }
 599
 600                         return false;
 601
 602                 } else {
 603
 604                         $_SESSION["uid"] = 1;
 605                         $_SESSION["name"] = "admin";
 606                         $_SESSION["access_level"] = 10;
 607
 608                         $_SESSION["hide_hello"] = true;
 609                         $_SESSION["hide_logout"] = true;
 610
 611                         $_SESSION["auth_module"] = false;
 612
 613                         if (!$_SESSION["csrf_token"]) {
 614                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 615                         }
 616
 617                         $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 618
 619                         initialize_user_prefs($link, $_SESSION["uid"]);
 620
 621                         return true;
 622                 }
 623         }
 624
 625         function make_password($length = 8) {
 626
 627                 $password = "";
 628                 $possible = "0123456789abcdfghjkmnpqrstvwxyzABCDFGHJKMNPQRSTVWXYZ";
 629
 630         $i = 0;
 631
 632                 while ($i < $length) {
 633                         $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 634
 635                         if (!strstr($password, $char)) {
 636                                 $password .= $char;
 637                                 $i++;
 638                         }
 639                 }
 640                 return $password;
 641         }
 642
 643         // this is called after user is created to initialize default feeds, labels
 644         // or whatever else
 645
 646         // user preferences are checked on every login, not here
 647
 648         function initialize_user($link, $uid) {
 649
 650                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 651                         values ('$uid', 'Tiny Tiny RSS: New Releases',
 652                         'http://tt-rss.org/releases.rss')");
 653
 654                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 655                         values ('$uid', 'Tiny Tiny RSS: Forum',
 656                                 'http://tt-rss.org/forum/rss.php')");
 657         }
 658
 659         function logout_user() {
 660                 session_destroy();
 661                 if (isset($_COOKIE[session_name()])) {
 662                    setcookie(session_name(), '', time()-42000, '/');
 663                 }
 664         }
 665
 666         function validate_csrf($csrf_token) {
 667                 return $csrf_token == $_SESSION['csrf_token'];
 668         }
 669
 670         function validate_session($link) {
 671                 if (SINGLE_USER_MODE) return true;
 672
 673                 $check_ip = $_SESSION['ip_address'];
 674
 675                 switch (SESSION_CHECK_ADDRESS) {
 676                 case 0:
 677                         $check_ip = '';
 678                         break;
 679                 case 1:
 680                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 681                         break;
 682                 case 2:
 683                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.'));
 684                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 685                         break;
 686                 };
 687
 688                 if ($check_ip && strpos($_SERVER['REMOTE_ADDR'], $check_ip) !== 0) {
 689                         $_SESSION["login_error_msg"] =
 690                                 __("Session failed to validate (incorrect IP)");
 691                         return false;
 692                 }
 693
 694                 if ($_SESSION["ref_schema_version"] != get_schema_version($link, true))
 695                         return false;
 696
 697                 if ($_SESSION["uid"]) {
 698
 699                         $result = db_query($link,
 700                                 "SELECT pwd_hash FROM ttrss_users WHERE id = '".$_SESSION["uid"]."'");
 701
 702                         $pwd_hash = db_fetch_result($result, 0, "pwd_hash");
 703
 704                         if ($pwd_hash != $_SESSION["pwd_hash"]) {
 705                                 return false;
 706                         }
 707                 }
 708
 709 /*              if ($_SESSION["cookie_lifetime"] && $_SESSION["uid"]) {
 710
 711                         //print_r($_SESSION);
 712
 713                         if (time() > $_SESSION["cookie_lifetime"]) {
 714                                 return false;
 715                         }
 716                 } */
 717
 718                 return true;
 719         }
 720
 721         function load_user_plugins($link, $owner_uid) {
 722                 if ($owner_uid) {
 723                         $plugins = get_pref($link, "_ENABLED_PLUGINS", $owner_uid);
 724
 725                         global $pluginhost;
 726                         $pluginhost->load($plugins, $pluginhost::KIND_USER, $owner_uid);
 727
 728                         if (get_schema_version($link) > 100) {
 729                                 $pluginhost->load_data();
 730                         }
 731                 }
 732         }
 733
 734         function login_sequence($link, $login_form = 0) {
 735                 $_SESSION["prefs_cache"] = false;
 736
 737                 if (SINGLE_USER_MODE) {
 738                         authenticate_user($link, "admin", null);
 739                         cache_prefs($link);
 740                         load_user_plugins($link, $_SESSION["uid"]);
 741                 } else {
 742                         if (!$_SESSION["uid"] || !validate_session($link)) {
 743
 744                                 if (AUTH_AUTO_LOGIN && authenticate_user($link, null, null)) {
 745                                     $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 746                                 } else {
 747                                          authenticate_user($link, null, null, true);
 748                                 }
 749
 750                                 if (!$_SESSION["uid"]) render_login_form($link, $login_form);
 751
 752                         } else {
 753                                 /* bump login timestamp */
 754                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 755                                         $_SESSION["uid"]);
 756                         }
 757
 758                         if ($_SESSION["uid"] && $_SESSION["language"] && SESSION_COOKIE_LIFETIME > 0) {
 759                                 setcookie("ttrss_lang", $_SESSION["language"],
 760                                         time() + SESSION_COOKIE_LIFETIME);
 761                         }
 762
 763                         if ($_SESSION["uid"]) {
 764                                 cache_prefs($link);
 765                                 load_user_plugins($link, $_SESSION["uid"]);
 766                         }
 767                 }
 768         }
 769
 770         function truncate_string($str, $max_len, $suffix = '&hellip;') {
 771                 if (mb_strlen($str, "utf-8") > $max_len - 3) {
 772                         return mb_substr($str, 0, $max_len, "utf-8") . $suffix;
 773                 } else {
 774                         return $str;
 775                 }
 776         }
 777
 778         // Deprecated, TODO: remove
 779         function theme_image($link, $filename) {
 780                 return $filename;
 781         }
 782
 783         function convert_timestamp($timestamp, $source_tz, $dest_tz) {
 784
 785                 try {
 786                         $source_tz = new DateTimeZone($source_tz);
 787                 } catch (Exception $e) {
 788                         $source_tz = new DateTimeZone('UTC');
 789                 }
 790
 791                 try {
 792                         $dest_tz = new DateTimeZone($dest_tz);
 793                 } catch (Exception $e) {
 794                         $dest_tz = new DateTimeZone('UTC');
 795                 }
 796
 797                 $dt = new DateTime(date('Y-m-d H:i:s', $timestamp), $source_tz);
 798                 return $dt->format('U') + $dest_tz->getOffset($dt);
 799         }
 800
 801         function make_local_datetime($link, $timestamp, $long, $owner_uid = false,
 802                                         $no_smart_dt = false) {
 803
 804                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 805                 if (!$timestamp) $timestamp = '1970-01-01 0:00';
 806
 807                 global $utc_tz;
 808                 global $tz_offset;
 809
 810                 # We store date in UTC internally
 811                 $dt = new DateTime($timestamp, $utc_tz);
 812
 813                 if ($tz_offset == -1) {
 814
 815                         $user_tz_string = get_pref($link, 'USER_TIMEZONE', $owner_uid);
 816
 817                         try {
 818                                 $user_tz = new DateTimeZone($user_tz_string);
 819                         } catch (Exception $e) {
 820                                 $user_tz = $utc_tz;
 821                         }
 822
 823                         $tz_offset = $user_tz->getOffset($dt);
 824                 }
 825
 826                 $user_timestamp = $dt->format('U') + $tz_offset;
 827
 828                 if (!$no_smart_dt) {
 829                         return smart_date_time($link, $user_timestamp,
 830                                 $tz_offset, $owner_uid);
 831                 } else {
 832                         if ($long)
 833                                 $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 834                         else
 835                                 $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 836
 837                         return date($format, $user_timestamp);
 838                 }
 839         }
 840
 841         function smart_date_time($link, $timestamp, $tz_offset = 0, $owner_uid = false) {
 842                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 843
 844                 if (date("Y.m.d", $timestamp) == date("Y.m.d", time() + $tz_offset)) {
 845                         return date("G:i", $timestamp);
 846                 } else if (date("Y", $timestamp) == date("Y", time() + $tz_offset)) {
 847                         $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 848                         return date($format, $timestamp);
 849                 } else {
 850                         $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 851                         return date($format, $timestamp);
 852                 }
 853         }
 854
 855         function sql_bool_to_bool($s) {
 856                 if ($s == "t" || $s == "1" || strtolower($s) == "true") {
 857                         return true;
 858                 } else {
 859                         return false;
 860                 }
 861         }
 862
 863         function bool_to_sql_bool($s) {
 864                 if ($s) {
 865                         return "true";
 866                 } else {
 867                         return "false";
 868                 }
 869         }
 870
 871         // Session caching removed due to causing wrong redirects to upgrade
 872         // script when get_schema_version() is called on an obsolete session
 873         // created on a previous schema version.
 874         function get_schema_version($link, $nocache = false) {
 875                 global $schema_version;
 876
 877                 if (!$schema_version) {
 878                         $result = db_query($link, "SELECT schema_version FROM ttrss_version");
 879                         $version = db_fetch_result($result, 0, "schema_version");
 880                         $schema_version = $version;
 881                         return $version;
 882                 } else {
 883                         return $schema_version;
 884                 }
 885         }
 886
 887         function sanity_check($link) {
 888                 require_once 'errors.php';
 889
 890                 $error_code = 0;
 891                 $schema_version = get_schema_version($link, true);
 892
 893                 if ($schema_version != SCHEMA_VERSION) {
 894                         $error_code = 5;
 895                 }
 896
 897                 if (DB_TYPE == "mysql") {
 898                         $result = db_query($link, "SELECT true", false);
 899                         if (db_num_rows($result) != 1) {
 900                                 $error_code = 10;
 901                         }
 902                 }
 903
 904                 if (db_escape_string("testTEST") != "testTEST") {
 905                         $error_code = 12;
 906                 }
 907
 908                 return array("code" => $error_code, "message" => $ERRORS[$error_code]);
 909         }
 910
 911         function file_is_locked($filename) {
 912                 if (function_exists('flock')) {
 913                         $fp = @fopen(LOCK_DIRECTORY . "/$filename", "r");
 914                         if ($fp) {
 915                                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 916                                         flock($fp, LOCK_UN);
 917                                         fclose($fp);
 918                                         return false;
 919                                 }
 920                                 fclose($fp);
 921                                 return true;
 922                         } else {
 923                                 return false;
 924                         }
 925                 }
 926                 return true; // consider the file always locked and skip the test
 927         }
 928
 929         function make_lockfile($filename) {
 930                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
 931
 932                 if ($fp && flock($fp, LOCK_EX | LOCK_NB)) {
 933                         if (function_exists('posix_getpid')) {
 934                                 fwrite($fp, posix_getpid() . "\n");
 935                         }
 936                         return $fp;
 937                 } else {
 938                         return false;
 939                 }
 940         }
 941
 942         function make_stampfile($filename) {
 943                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
 944
 945                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 946                         fwrite($fp, time() . "\n");
 947                         flock($fp, LOCK_UN);
 948                         fclose($fp);
 949                         return true;
 950                 } else {
 951                         return false;
 952                 }
 953         }
 954
 955         function sql_random_function() {
 956                 if (DB_TYPE == "mysql") {
 957                         return "RAND()";
 958                 } else {
 959                         return "RANDOM()";
 960                 }
 961         }
 962
 963         function catchup_feed($link, $feed, $cat_view, $owner_uid = false, $max_id = false) {
 964
 965                         if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 966
 967                         //if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
 968
 969                         $ref_check_qpart = ($max_id &&
 970                                 !get_pref($link, 'REVERSE_HEADLINES')) ? "ref_id <= '$max_id'" : "true";
 971
 972                         if (is_numeric($feed)) {
 973                                 if ($cat_view) {
 974
 975                                         if ($feed >= 0) {
 976
 977                                                 if ($feed > 0) {
 978                                                         $children = getChildCategories($link, $feed, $owner_uid);
 979                                                         array_push($children, $feed);
 980
 981                                                         $children = join(",", $children);
 982
 983                                                         $cat_qpart = "cat_id IN ($children)";
 984                                                 } else {
 985                                                         $cat_qpart = "cat_id IS NULL";
 986                                                 }
 987
 988                                                 db_query($link, "UPDATE ttrss_user_entries
 989                                                         SET unread = false,last_read = NOW()
 990                                                         WHERE feed_id IN (SELECT id FROM ttrss_feeds WHERE $cat_qpart)
 991                                                         AND $ref_check_qpart AND unread = true
 992                                                         AND owner_uid = $owner_uid");
 993
 994                                         } else if ($feed == -2) {
 995
 996                                                 db_query($link, "UPDATE ttrss_user_entries
 997                                                         SET unread = false,last_read = NOW() WHERE (SELECT COUNT(*)
 998                                                                 FROM ttrss_user_labels2 WHERE article_id = ref_id) > 0
 999                                                                 AND $ref_check_qpart
1000                                                                 AND unread = true AND owner_uid = $owner_uid");
1001                                         }
1002
1003                                 } else if ($feed > 0) {
1004
1005                                         db_query($link, "UPDATE ttrss_user_entries
1006                                                         SET unread = false,last_read = NOW()
1007                                                         WHERE feed_id = '$feed'
1008                                                         AND $ref_check_qpart AND unread = true
1009                                                         AND owner_uid = $owner_uid");
1010
1011                                 } else if ($feed < 0 && $feed > -10) { // special, like starred
1012
1013                                         if ($feed == -1) {
1014                                                 db_query($link, "UPDATE ttrss_user_entries
1015                                                         SET unread = false,last_read = NOW()
1016                                                         WHERE marked = true
1017                                                         AND $ref_check_qpart AND unread = true
1018                                                         AND owner_uid = $owner_uid");
1019                                         }
1020
1021                                         if ($feed == -2) {
1022                                                 db_query($link, "UPDATE ttrss_user_entries
1023                                                         SET unread = false,last_read = NOW()
1024                                                         WHERE published = true
1025                                                         AND $ref_check_qpart AND unread = true
1026                                                         AND owner_uid = $owner_uid");
1027                                         }
1028
1029                                         if ($feed == -3) {
1030
1031                                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE");
1032
1033                                                 if (DB_TYPE == "pgsql") {
1034                                                         $match_part = "updated > NOW() - INTERVAL '$intl hour' ";
1035                                                 } else {
1036                                                         $match_part = "updated > DATE_SUB(NOW(),
1037                                                                 INTERVAL $intl HOUR) ";
1038                                                 }
1039
1040                                                 $result = db_query($link, "SELECT id FROM ttrss_entries,
1041                                                         ttrss_user_entries WHERE $match_part AND
1042                                                         unread = true AND
1043                                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
1044                                                         owner_uid = $owner_uid");
1045
1046                                                 $affected_ids = array();
1047
1048                                                 while ($line = db_fetch_assoc($result)) {
1049                                                         array_push($affected_ids, $line["id"]);
1050                                                 }
1051
1052                                                 catchupArticlesById($link, $affected_ids, 0);
1053                                         }
1054
1055                                         if ($feed == -4) {
1056                                                 db_query($link, "UPDATE ttrss_user_entries
1057                                                         SET unread = false,last_read = NOW()
1058                                                         WHERE $ref_check_qpart AND unread = true AND
1059                                                         owner_uid = $owner_uid");
1060                                         }
1061
1062                                 } else if ($feed < -10) { // label
1063
1064                                         $label_id = -$feed - 11;
1065
1066                                         db_query($link, "UPDATE ttrss_user_entries, ttrss_user_labels2
1067                                                 SET unread = false, last_read = NOW()
1068                                                         WHERE label_id = '$label_id' AND unread = true
1069                                                         AND $ref_check_qpart
1070                                                         AND owner_uid = '$owner_uid' AND ref_id = article_id");
1071
1072                                 }
1073
1074                                 ccache_update($link, $feed, $owner_uid, $cat_view);
1075
1076                         } else { // tag
1077                                 db_query($link, "BEGIN");
1078
1079                                 $tag_name = db_escape_string($feed);
1080
1081                                 $result = db_query($link, "SELECT post_int_id FROM ttrss_tags
1082                                         WHERE tag_name = '$tag_name' AND owner_uid = $owner_uid");
1083
1084                                 while ($line = db_fetch_assoc($result)) {
1085                                         db_query($link, "UPDATE ttrss_user_entries SET
1086                                                 unread = false, last_read = NOW()
1087                                                 WHERE $ref_check_qpart AND unread = true
1088                                                 AND int_id = " . $line["post_int_id"]);
1089                                 }
1090                                 db_query($link, "COMMIT");
1091                         }
1092         }
1093
1094         function getAllCounters($link) {
1095                 $data = getGlobalCounters($link);
1096
1097                 $data = array_merge($data, getVirtCounters($link));
1098                 $data = array_merge($data, getLabelCounters($link));
1099                 $data = array_merge($data, getFeedCounters($link, $active_feed));
1100                 $data = array_merge($data, getCategoryCounters($link));
1101
1102                 return $data;
1103         }
1104
1105         function getCategoryTitle($link, $cat_id) {
1106
1107                 if ($cat_id == -1) {
1108                         return __("Special");
1109                 } else if ($cat_id == -2) {
1110                         return __("Labels");
1111                 } else {
1112
1113                         $result = db_query($link, "SELECT title FROM ttrss_feed_categories WHERE
1114                                 id = '$cat_id'");
1115
1116                         if (db_num_rows($result) == 1) {
1117                                 return db_fetch_result($result, 0, "title");
1118                         } else {
1119                                 return __("Uncategorized");
1120                         }
1121                 }
1122         }
1123
1124
1125         function getCategoryCounters($link) {
1126                 $ret_arr = array();
1127
1128                 /* Labels category */
1129
1130                 $cv = array("id" => -2, "kind" => "cat",
1131                         "counter" => getCategoryUnread($link, -2));
1132
1133                 array_push($ret_arr, $cv);
1134
1135                 $result = db_query($link, "SELECT id AS cat_id, value AS unread,
1136                         (SELECT COUNT(id) FROM ttrss_feed_categories AS c2
1137                                 WHERE c2.parent_cat = ttrss_feed_categories.id) AS num_children
1138                         FROM ttrss_feed_categories, ttrss_cat_counters_cache
1139                         WHERE ttrss_cat_counters_cache.feed_id = id AND
1140                         ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid AND
1141                         ttrss_feed_categories.owner_uid = " . $_SESSION["uid"]);
1142
1143                 while ($line = db_fetch_assoc($result)) {
1144                         $line["cat_id"] = (int) $line["cat_id"];
1145
1146                         if ($line["num_children"] > 0) {
1147                                 $child_counter = getCategoryChildrenUnread($link, $line["cat_id"], $_SESSION["uid"]);
1148                         } else {
1149                                 $child_counter = 0;
1150                         }
1151
1152                         $cv = array("id" => $line["cat_id"], "kind" => "cat",
1153                                 "counter" => $line["unread"] + $child_counter);
1154
1155                         array_push($ret_arr, $cv);
1156                 }
1157
1158                 /* Special case: NULL category doesn't actually exist in the DB */
1159
1160                 $cv = array("id" => 0, "kind" => "cat",
1161                         "counter" => (int) ccache_find($link, 0, $_SESSION["uid"], true));
1162
1163                 array_push($ret_arr, $cv);
1164
1165                 return $ret_arr;
1166         }
1167
1168         // only accepts real cats (>= 0)
1169         function getCategoryChildrenUnread($link, $cat, $owner_uid = false) {
1170                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1171
1172                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories WHERE parent_cat = '$cat'
1173                                 AND owner_uid = $owner_uid");
1174
1175                 $unread = 0;
1176
1177                 while ($line = db_fetch_assoc($result)) {
1178                         $unread += getCategoryUnread($link, $line["id"], $owner_uid);
1179                         $unread += getCategoryChildrenUnread($link, $line["id"], $owner_uid);
1180                 }
1181
1182                 return $unread;
1183         }
1184
1185         function getCategoryUnread($link, $cat, $owner_uid = false) {
1186
1187                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1188
1189                 if ($cat >= 0) {
1190
1191                         if ($cat != 0) {
1192                                 $cat_query = "cat_id = '$cat'";
1193                         } else {
1194                                 $cat_query = "cat_id IS NULL";
1195                         }
1196
1197                         $result = db_query($link, "SELECT id FROM ttrss_feeds WHERE $cat_query
1198                                         AND owner_uid = " . $owner_uid);
1199
1200                         $cat_feeds = array();
1201                         while ($line = db_fetch_assoc($result)) {
1202                                 array_push($cat_feeds, "feed_id = " . $line["id"]);
1203                         }
1204
1205                         if (count($cat_feeds) == 0) return 0;
1206
1207                         $match_part = implode(" OR ", $cat_feeds);
1208
1209                         $result = db_query($link, "SELECT COUNT(int_id) AS unread
1210                                 FROM ttrss_user_entries
1211                                 WHERE   unread = true AND ($match_part)
1212                                 AND owner_uid = " . $owner_uid);
1213
1214                         $unread = 0;
1215
1216                         # this needs to be rewritten
1217                         while ($line = db_fetch_assoc($result)) {
1218                                 $unread += $line["unread"];
1219                         }
1220
1221                         return $unread;
1222                 } else if ($cat == -1) {
1223                         return getFeedUnread($link, -1) + getFeedUnread($link, -2) + getFeedUnread($link, -3) + getFeedUnread($link, 0);
1224                 } else if ($cat == -2) {
1225
1226                         $result = db_query($link, "
1227                                 SELECT COUNT(unread) AS unread FROM
1228                                         ttrss_user_entries, ttrss_user_labels2
1229                                 WHERE article_id = ref_id AND unread = true
1230                                         AND ttrss_user_entries.owner_uid = '$owner_uid'");
1231
1232                         $unread = db_fetch_result($result, 0, "unread");
1233
1234                         return $unread;
1235
1236                 }
1237         }
1238
1239         function getFeedUnread($link, $feed, $is_cat = false) {
1240                 return getFeedArticles($link, $feed, $is_cat, true, $_SESSION["uid"]);
1241         }
1242
1243         function getLabelUnread($link, $label_id, $owner_uid = false) {
1244                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1245
1246                 $result = db_query($link, "SELECT COUNT(ref_id) AS unread FROM ttrss_user_entries, ttrss_user_labels2
1247                         WHERE owner_uid = '$owner_uid' AND unread = true AND label_id = '$label_id' AND article_id = ref_id");
1248
1249                 if (db_num_rows($result) != 0) {
1250                         return db_fetch_result($result, 0, "unread");
1251                 } else {
1252                         return 0;
1253                 }
1254         }
1255
1256         function getFeedArticles($link, $feed, $is_cat = false, $unread_only = false,
1257                 $owner_uid = false) {
1258
1259                 $n_feed = (int) $feed;
1260                 $need_entries = false;
1261
1262                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1263
1264                 if ($unread_only) {
1265                         $unread_qpart = "unread = true";
1266                 } else {
1267                         $unread_qpart = "true";
1268                 }
1269
1270                 if ($is_cat) {
1271                         return getCategoryUnread($link, $n_feed, $owner_uid);
1272                 } else if ($n_feed == -6) {
1273                         return 0;
1274                 } else if ($feed != "0" && $n_feed == 0) {
1275
1276                         $feed = db_escape_string($feed);
1277
1278                         $result = db_query($link, "SELECT SUM((SELECT COUNT(int_id)
1279                                 FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1280                                         AND ref_id = id AND $unread_qpart)) AS count FROM ttrss_tags
1281                                 WHERE owner_uid = $owner_uid AND tag_name = '$feed'");
1282                         return db_fetch_result($result, 0, "count");
1283
1284                 } else if ($n_feed == -1) {
1285                         $match_part = "marked = true";
1286                 } else if ($n_feed == -2) {
1287                         $match_part = "published = true";
1288                 } else if ($n_feed == -3) {
1289                         $match_part = "unread = true AND score >= 0";
1290
1291                         $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
1292
1293                         if (DB_TYPE == "pgsql") {
1294                                 $match_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
1295                         } else {
1296                                 $match_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
1297                         }
1298
1299                         $need_entries = true;
1300
1301                 } else if ($n_feed == -4) {
1302                         $match_part = "true";
1303                 } else if ($n_feed >= 0) {
1304
1305                         if ($n_feed != 0) {
1306                                 $match_part = "feed_id = '$n_feed'";
1307                         } else {
1308                                 $match_part = "feed_id IS NULL";
1309                         }
1310
1311                 } else if ($feed < -10) {
1312
1313                         $label_id = -$feed - 11;
1314
1315                         return getLabelUnread($link, $label_id, $owner_uid);
1316
1317                 }
1318
1319                 if ($match_part) {
1320
1321                         if ($need_entries) {
1322                                 $from_qpart = "ttrss_user_entries,ttrss_entries";
1323                                 $from_where = "ttrss_entries.id = ttrss_user_entries.ref_id AND";
1324                         } else {
1325                                 $from_qpart = "ttrss_user_entries";
1326                         }
1327
1328                         $query = "SELECT count(int_id) AS unread
1329                                 FROM $from_qpart WHERE
1330                                 $unread_qpart AND $from_where ($match_part) AND ttrss_user_entries.owner_uid = $owner_uid";
1331
1332                         //echo "[$feed/$query]\n";
1333
1334                         $result = db_query($link, $query);
1335
1336                 } else {
1337
1338                         $result = db_query($link, "SELECT COUNT(post_int_id) AS unread
1339                                 FROM ttrss_tags,ttrss_user_entries,ttrss_entries
1340                                 WHERE tag_name = '$feed' AND post_int_id = int_id AND ref_id = ttrss_entries.id
1341                                 AND $unread_qpart AND ttrss_tags.owner_uid = " . $owner_uid);
1342                 }
1343
1344                 $unread = db_fetch_result($result, 0, "unread");
1345
1346                 return $unread;
1347         }
1348
1349         function getGlobalUnread($link, $user_id = false) {
1350
1351                 if (!$user_id) {
1352                         $user_id = $_SESSION["uid"];
1353                 }
1354
1355                 $result = db_query($link, "SELECT SUM(value) AS c_id FROM ttrss_counters_cache
1356                         WHERE owner_uid = '$user_id' AND feed_id > 0");
1357
1358                 $c_id = db_fetch_result($result, 0, "c_id");
1359
1360                 return $c_id;
1361         }
1362
1363         function getGlobalCounters($link, $global_unread = -1) {
1364                 $ret_arr = array();
1365
1366                 if ($global_unread == -1) {
1367                         $global_unread = getGlobalUnread($link);
1368                 }
1369
1370                 $cv = array("id" => "global-unread",
1371                         "counter" => (int) $global_unread);
1372
1373                 array_push($ret_arr, $cv);
1374
1375                 $result = db_query($link, "SELECT COUNT(id) AS fn FROM
1376                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1377
1378                 $subscribed_feeds = db_fetch_result($result, 0, "fn");
1379
1380                 $cv = array("id" => "subscribed-feeds",
1381                         "counter" => (int) $subscribed_feeds);
1382
1383                 array_push($ret_arr, $cv);
1384
1385                 return $ret_arr;
1386         }
1387
1388         function getVirtCounters($link) {
1389
1390                 $ret_arr = array();
1391
1392                 for ($i = 0; $i >= -4; $i--) {
1393
1394                         $count = getFeedUnread($link, $i);
1395
1396                         $cv = array("id" => $i,
1397                                 "counter" => (int) $count);
1398
1399 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1400 //                              $cv["xmsg"] = getFeedArticles($link, $i)." ".__("total");
1401
1402                         array_push($ret_arr, $cv);
1403                 }
1404
1405                 return $ret_arr;
1406         }
1407
1408         function getLabelCounters($link, $descriptions = false) {
1409
1410                 $ret_arr = array();
1411
1412                 $owner_uid = $_SESSION["uid"];
1413
1414                 $result = db_query($link, "SELECT id,caption,COUNT(unread) AS unread
1415                         FROM ttrss_labels2 LEFT JOIN ttrss_user_labels2 ON
1416                                 (ttrss_labels2.id = label_id)
1417                                         LEFT JOIN ttrss_user_entries ON (ref_id = article_id AND unread = true)
1418                                 WHERE ttrss_labels2.owner_uid = $owner_uid GROUP BY ttrss_labels2.id,
1419                                         ttrss_labels2.caption");
1420
1421                 while ($line = db_fetch_assoc($result)) {
1422
1423                         $id = -$line["id"] - 11;
1424
1425                         $label_name = $line["caption"];
1426                         $count = $line["unread"];
1427
1428                         $cv = array("id" => $id,
1429                                 "counter" => (int) $count);
1430
1431                         if ($descriptions)
1432                                 $cv["description"] = $label_name;
1433
1434 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1435 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1436
1437                         array_push($ret_arr, $cv);
1438                 }
1439
1440                 return $ret_arr;
1441         }
1442
1443         function getFeedCounters($link, $active_feed = false) {
1444
1445                 $ret_arr = array();
1446
1447                 $query = "SELECT ttrss_feeds.id,
1448                                 ttrss_feeds.title,
1449                                 ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
1450                                 last_error, value AS count
1451                         FROM ttrss_feeds, ttrss_counters_cache
1452                         WHERE ttrss_feeds.owner_uid = ".$_SESSION["uid"]."
1453                                 AND ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid
1454                                 AND ttrss_counters_cache.feed_id = id";
1455
1456                 $result = db_query($link, $query);
1457                 $fctrs_modified = false;
1458
1459                 while ($line = db_fetch_assoc($result)) {
1460
1461                         $id = $line["id"];
1462                         $count = $line["count"];
1463                         $last_error = htmlspecialchars($line["last_error"]);
1464
1465                         $last_updated = make_local_datetime($link, $line['last_updated'], false);
1466
1467                         $has_img = feed_has_icon($id);
1468
1469                         if (date('Y') - date('Y', strtotime($line['last_updated'])) > 2)
1470                                 $last_updated = '';
1471
1472                         $cv = array("id" => $id,
1473                                 "updated" => $last_updated,
1474                                 "counter" => (int) $count,
1475                                 "has_img" => (int) $has_img);
1476
1477                         if ($last_error)
1478                                 $cv["error"] = $last_error;
1479
1480 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1481 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1482
1483                         if ($active_feed && $id == $active_feed)
1484                                 $cv["title"] = truncate_string($line["title"], 30);
1485
1486                         array_push($ret_arr, $cv);
1487
1488                 }
1489
1490                 return $ret_arr;
1491         }
1492
1493         function get_pgsql_version($link) {
1494                 $result = db_query($link, "SELECT version() AS version");
1495                 $version = explode(" ", db_fetch_result($result, 0, "version"));
1496                 return $version[1];
1497         }
1498
1499         /**
1500          * @return array (code => Status code, message => error message if available)
1501          *
1502          *                 0 - OK, Feed already exists
1503          *                 1 - OK, Feed added
1504          *                 2 - Invalid URL
1505          *                 3 - URL content is HTML, no feeds available
1506          *                 4 - URL content is HTML which contains multiple feeds.
1507          *                     Here you should call extractfeedurls in rpc-backend
1508          *                     to get all possible feeds.
1509          *                 5 - Couldn't download the URL content.
1510          */
1511         function subscribe_to_feed($link, $url, $cat_id = 0,
1512                         $auth_login = '', $auth_pass = '', $need_auth = false) {
1513
1514                 global $fetch_last_error;
1515
1516                 require_once "include/rssfuncs.php";
1517
1518                 $url = fix_url($url);
1519
1520                 if (!$url || !validate_feed_url($url)) return array("code" => 2);
1521
1522                 $contents = @fetch_file_contents($url, false, $auth_login, $auth_pass);
1523
1524                 if (!$contents) {
1525                         return array("code" => 5, "message" => $fetch_last_error);
1526                 }
1527
1528                 if (is_html($contents)) {
1529                         $feedUrls = get_feeds_from_html($url, $contents);
1530
1531                         if (count($feedUrls) == 0) {
1532                                 return array("code" => 3);
1533                         } else if (count($feedUrls) > 1) {
1534                                 return array("code" => 4, "feeds" => $feedUrls);
1535                         }
1536                         //use feed url as new URL
1537                         $url = key($feedUrls);
1538                 }
1539
1540                 if ($cat_id == "0" || !$cat_id) {
1541                         $cat_qpart = "NULL";
1542                 } else {
1543                         $cat_qpart = "'$cat_id'";
1544                 }
1545
1546                 $result = db_query($link,
1547                         "SELECT id FROM ttrss_feeds
1548                         WHERE feed_url = '$url' AND owner_uid = ".$_SESSION["uid"]);
1549
1550                 if (db_num_rows($result) == 0) {
1551                         $result = db_query($link,
1552                                 "INSERT INTO ttrss_feeds
1553                                         (owner_uid,feed_url,title,cat_id, auth_login,auth_pass,update_method)
1554                                 VALUES ('".$_SESSION["uid"]."', '$url',
1555                                 '[Unknown]', $cat_qpart, '$auth_login', '$auth_pass', 0)");
1556
1557                         $result = db_query($link,
1558                                 "SELECT id FROM ttrss_feeds WHERE feed_url = '$url'
1559                                         AND owner_uid = " . $_SESSION["uid"]);
1560
1561                         $feed_id = db_fetch_result($result, 0, "id");
1562
1563                         if ($feed_id) {
1564                                 update_rss_feed($link, $feed_id, true);
1565                         }
1566
1567                         return array("code" => 1);
1568                 } else {
1569                         return array("code" => 0);
1570                 }
1571         }
1572
1573         function print_feed_select($link, $id, $default_id = "",
1574                 $attributes = "", $include_all_feeds = true,
1575                 $root_id = false, $nest_level = 0) {
1576
1577                 if (!$root_id) {
1578                         print "<select id=\"$id\" name=\"$id\" $attributes>";
1579                         if ($include_all_feeds) {
1580                                 $is_selected = ("0" == $default_id) ? "selected=\"1\"" : "";
1581                                 print "<option $is_selected value=\"0\">".__('All feeds')."</option>";
1582                         }
1583                 }
1584
1585                 if (get_pref($link, 'ENABLE_FEED_CATS')) {
1586
1587                         if ($root_id)
1588                                 $parent_qpart = "parent_cat = '$root_id'";
1589                         else
1590                                 $parent_qpart = "parent_cat IS NULL";
1591
1592                         $result = db_query($link, "SELECT id,title,
1593                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1594                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1595                                 FROM ttrss_feed_categories
1596                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1597
1598                         while ($line = db_fetch_assoc($result)) {
1599
1600                                 for ($i = 0; $i < $nest_level; $i++)
1601                                         $line["title"] = " - " . $line["title"];
1602
1603                                 $is_selected = ("CAT:".$line["id"] == $default_id) ? "selected=\"1\"" : "";
1604
1605                                 printf("<option $is_selected value='CAT:%d'>%s</option>",
1606                                         $line["id"], htmlspecialchars($line["title"]));
1607
1608                                 if ($line["num_children"] > 0)
1609                                         print_feed_select($link, $id, $default_id, $attributes,
1610                                                 $include_all_feeds, $line["id"], $nest_level+1);
1611
1612                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1613                                         WHERE cat_id = '".$line["id"]."' AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1614
1615                                 while ($fline = db_fetch_assoc($feed_result)) {
1616                                         $is_selected = ($fline["id"] == $default_id) ? "selected=\"1\"" : "";
1617
1618                                         $fline["title"] = " + " . $fline["title"];
1619
1620                                         for ($i = 0; $i < $nest_level; $i++)
1621                                                 $fline["title"] = " - " . $fline["title"];
1622
1623                                         printf("<option $is_selected value='%d'>%s</option>",
1624                                                 $fline["id"], htmlspecialchars($fline["title"]));
1625                                 }
1626                         }
1627
1628                         if (!$root_id) {
1629                                 $is_selected = ($default_id == "CAT:0") ? "selected=\"1\"" : "";
1630
1631                                 printf("<option $is_selected value='CAT:0'>%s</option>",
1632                                         __("Uncategorized"));
1633
1634                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1635                                         WHERE cat_id IS NULL AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1636
1637                                 while ($fline = db_fetch_assoc($feed_result)) {
1638                                         $is_selected = ($fline["id"] == $default_id && !$default_is_cat) ? "selected=\"1\"" : "";
1639
1640                                         $fline["title"] = " + " . $fline["title"];
1641
1642                                         for ($i = 0; $i < $nest_level; $i++)
1643                                                 $fline["title"] = " - " . $fline["title"];
1644
1645                                         printf("<option $is_selected value='%d'>%s</option>",
1646                                                 $fline["id"], htmlspecialchars($fline["title"]));
1647                                 }
1648                         }
1649
1650                 } else {
1651                         $result = db_query($link, "SELECT id,title FROM ttrss_feeds
1652                                 WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
1653
1654                         while ($line = db_fetch_assoc($result)) {
1655
1656                                 $is_selected = ($line["id"] == $default_id) ? "selected=\"1\"" : "";
1657
1658                                 printf("<option $is_selected value='%d'>%s</option>",
1659                                         $line["id"], htmlspecialchars($line["title"]));
1660                         }
1661                 }
1662
1663                 if (!$root_id) {
1664                         print "</select>";
1665                 }
1666         }
1667
1668         function print_feed_cat_select($link, $id, $default_id,
1669                 $attributes, $include_all_cats = true, $root_id = false, $nest_level = 0) {
1670
1671                         if (!$root_id) {
1672                                         print "<select id=\"$id\" name=\"$id\" default=\"$default_id\" onchange=\"catSelectOnChange(this)\" $attributes>";
1673                         }
1674
1675                         if ($root_id)
1676                                 $parent_qpart = "parent_cat = '$root_id'";
1677                         else
1678                                 $parent_qpart = "parent_cat IS NULL";
1679
1680                         $result = db_query($link, "SELECT id,title,
1681                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1682                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1683                                 FROM ttrss_feed_categories
1684                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1685
1686                         while ($line = db_fetch_assoc($result)) {
1687                                 if ($line["id"] == $default_id) {
1688                                         $is_selected = "selected=\"1\"";
1689                                 } else {
1690                                         $is_selected = "";
1691                                 }
1692
1693                                 for ($i = 0; $i < $nest_level; $i++)
1694                                         $line["title"] = " - " . $line["title"];
1695
1696                                 if ($line["title"])
1697                                         printf("<option $is_selected value='%d'>%s</option>",
1698                                                 $line["id"], htmlspecialchars($line["title"]));
1699
1700                                 if ($line["num_children"] > 0)
1701                                         print_feed_cat_select($link, $id, $default_id, $attributes,
1702                                                 $include_all_cats, $line["id"], $nest_level+1);
1703                         }
1704
1705                         if (!$root_id) {
1706                                 if ($include_all_cats) {
1707                                         if (db_num_rows($result) > 0) {
1708                                                 print "<option disabled=\"1\">--------</option>";
1709                                         }
1710
1711                                         if ($default_id == 0) {
1712                                                 $is_selected = "selected=\"1\"";
1713                                         } else {
1714                                                 $is_selected = "";
1715                                         }
1716
1717                                         print "<option $is_selected value=\"0\">".__('Uncategorized')."</option>";
1718                                 }
1719                                 print "</select>";
1720                         }
1721                 }
1722
1723         function checkbox_to_sql_bool($val) {
1724                 return ($val == "on") ? "true" : "false";
1725         }
1726
1727         function getFeedCatTitle($link, $id) {
1728                 if ($id == -1) {
1729                         return __("Special");
1730                 } else if ($id < -10) {
1731                         return __("Labels");
1732                 } else if ($id > 0) {
1733                         $result = db_query($link, "SELECT ttrss_feed_categories.title
1734                                 FROM ttrss_feeds, ttrss_feed_categories WHERE ttrss_feeds.id = '$id' AND
1735                                         cat_id = ttrss_feed_categories.id");
1736                         if (db_num_rows($result) == 1) {
1737                                 return db_fetch_result($result, 0, "title");
1738                         } else {
1739                                 return __("Uncategorized");
1740                         }
1741                 } else {
1742                         return "getFeedCatTitle($id) failed";
1743                 }
1744
1745         }
1746
1747         function getFeedIcon($id) {
1748                 switch ($id) {
1749                 case 0:
1750                         return "images/archive.png";
1751                         break;
1752                 case -1:
1753                         return "images/mark_set.svg";
1754                         break;
1755                 case -2:
1756                         return "images/pub_set.svg";
1757                         break;
1758                 case -3:
1759                         return "images/fresh.png";
1760                         break;
1761                 case -4:
1762                         return "images/tag.png";
1763                         break;
1764                 case -6:
1765                         return "images/recently_read.png";
1766                         break;
1767                 default:
1768                         if ($id < -10) {
1769                                 return "images/label.png";
1770                         } else {
1771                                 if (file_exists(ICONS_DIR . "/$id.ico"))
1772                                         return ICONS_URL . "/$id.ico";
1773                         }
1774                         break;
1775                 }
1776         }
1777
1778         function getFeedTitle($link, $id, $cat = false) {
1779                 if ($cat) {
1780                         return getCategoryTitle($link, $id);
1781                 } else if ($id == -1) {
1782                         return __("Starred articles");
1783                 } else if ($id == -2) {
1784                         return __("Published articles");
1785                 } else if ($id == -3) {
1786                         return __("Fresh articles");
1787                 } else if ($id == -4) {
1788                         return __("All articles");
1789                 } else if ($id === 0 || $id === "0") {
1790                         return __("Archived articles");
1791                 } else if ($id == -6) {
1792                         return __("Recently read");
1793                 } else if ($id < -10) {
1794                         $label_id = -$id - 11;
1795                         $result = db_query($link, "SELECT caption FROM ttrss_labels2 WHERE id = '$label_id'");
1796                         if (db_num_rows($result) == 1) {
1797                                 return db_fetch_result($result, 0, "caption");
1798                         } else {
1799                                 return "Unknown label ($label_id)";
1800                         }
1801
1802                 } else if (is_numeric($id) && $id > 0) {
1803                         $result = db_query($link, "SELECT title FROM ttrss_feeds WHERE id = '$id'");
1804                         if (db_num_rows($result) == 1) {
1805                                 return db_fetch_result($result, 0, "title");
1806                         } else {
1807                                 return "Unknown feed ($id)";
1808                         }
1809                 } else {
1810                         return $id;
1811                 }
1812         }
1813
1814         function make_init_params($link) {
1815                 $params = array();
1816
1817                 $params["sign_progress"] = theme_image($link, "images/indicator_white.gif");
1818                 $params["sign_progress_tiny"] = theme_image($link, "images/indicator_tiny.gif");
1819                 $params["sign_excl"] = theme_image($link, "images/sign_excl.svg");
1820                 $params["sign_info"] = theme_image($link, "images/sign_info.svg");
1821
1822                 foreach (array("ON_CATCHUP_SHOW_NEXT_FEED", "HIDE_READ_FEEDS",
1823                         "ENABLE_FEED_CATS", "FEEDS_SORT_BY_UNREAD", "CONFIRM_FEED_CATCHUP",
1824                         "CDM_AUTO_CATCHUP", "FRESH_ARTICLE_MAX_AGE", "DEFAULT_ARTICLE_LIMIT",
1825                         "HIDE_READ_SHOWS_SPECIAL", "COMBINED_DISPLAY_MODE") as $param) {
1826
1827                                  $params[strtolower($param)] = (int) get_pref($link, $param);
1828                  }
1829
1830                 $params["icons_url"] = ICONS_URL;
1831                 $params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
1832                 $params["default_view_mode"] = get_pref($link, "_DEFAULT_VIEW_MODE");
1833                 $params["default_view_limit"] = (int) get_pref($link, "_DEFAULT_VIEW_LIMIT");
1834                 $params["default_view_order_by"] = get_pref($link, "_DEFAULT_VIEW_ORDER_BY");
1835                 $params["bw_limit"] = (int) $_SESSION["bw_limit"];
1836
1837                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
1838                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1839
1840                 $max_feed_id = db_fetch_result($result, 0, "mid");
1841                 $num_feeds = db_fetch_result($result, 0, "nf");
1842
1843                 $params["max_feed_id"] = (int) $max_feed_id;
1844                 $params["num_feeds"] = (int) $num_feeds;
1845
1846                 $params["collapsed_feedlist"] = (int) get_pref($link, "_COLLAPSED_FEEDLIST");
1847                 $params["hotkeys"] = get_hotkeys_map($link);
1848
1849                 $params["csrf_token"] = $_SESSION["csrf_token"];
1850                 $params["widescreen"] = (int) $_COOKIE["ttrss_widescreen"];
1851
1852                 $params['simple_update'] = defined('SIMPLE_UPDATE_MODE') && SIMPLE_UPDATE_MODE;
1853
1854                 return $params;
1855         }
1856
1857         function get_hotkeys_info($link) {
1858                 $hotkeys = array(
1859                         __("Navigation") => array(
1860                                 "next_feed" => __("Open next feed"),
1861                                 "prev_feed" => __("Open previous feed"),
1862                                 "next_article" => __("Open next article"),
1863                                 "prev_article" => __("Open previous article"),
1864                                 "next_article_noscroll" => __("Open next article (don't scroll long articles)"),
1865                                 "prev_article_noscroll" => __("Open previous article (don't scroll long articles)"),
1866                                 "search_dialog" => __("Show search dialog")),
1867                         __("Article") => array(
1868                                 "toggle_mark" => __("Toggle starred"),
1869                                 "toggle_publ" => __("Toggle published"),
1870                                 "toggle_unread" => __("Toggle unread"),
1871                                 "edit_tags" => __("Edit tags"),
1872                                 "dismiss_selected" => __("Dismiss selected"),
1873                                 "dismiss_read" => __("Dismiss read"),
1874                                 "open_in_new_window" => __("Open in new window"),
1875                                 "catchup_below" => __("Mark below as read"),
1876                                 "catchup_above" => __("Mark above as read"),
1877                                 "article_scroll_down" => __("Scroll down"),
1878                                 "article_scroll_up" => __("Scroll up"),
1879                                 "select_article_cursor" => __("Select article under cursor"),
1880                                 "email_article" => __("Email article"),
1881                                 "close_article" => __("Close article"),
1882                                 "toggle_widescreen" => __("Toggle widescreen mode")),
1883                         __("Article selection") => array(
1884                                 "select_all" => __("Select all articles"),
1885                                 "select_unread" => __("Select unread"),
1886                                 "select_marked" => __("Select starred"),
1887                                 "select_published" => __("Select published"),
1888                                 "select_invert" => __("Invert selection"),
1889                                 "select_none" => __("Deselect everything")),
1890                         __("Feed") => array(
1891                                 "feed_refresh" => __("Refresh current feed"),
1892                                 "feed_unhide_read" => __("Un/hide read feeds"),
1893                                 "feed_subscribe" => __("Subscribe to feed"),
1894                                 "feed_edit" => __("Edit feed"),
1895                                 "feed_catchup" => __("Mark as read"),
1896                                 "feed_reverse" => __("Reverse headlines"),
1897                                 "feed_debug_update" => __("Debug feed update"),
1898                                 "catchup_all" => __("Mark all feeds as read"),
1899                                 "cat_toggle_collapse" => __("Un/collapse current category"),
1900                                 "toggle_combined_mode" => __("Toggle combined mode")),
1901                         __("Go to") => array(
1902                                 "goto_all" => __("All articles"),
1903                                 "goto_fresh" => __("Fresh"),
1904                                 "goto_marked" => __("Starred"),
1905                                 "goto_published" => __("Published"),
1906                                 "goto_tagcloud" => __("Tag cloud"),
1907                                 "goto_prefs" => __("Preferences")),
1908                         __("Other") => array(
1909                                 "create_label" => __("Create label"),
1910                                 "create_filter" => __("Create filter"),
1911                                 "collapse_sidebar" => __("Un/collapse sidebar"),
1912                                 "help_dialog" => __("Show help dialog"))
1913                         );
1914
1915                 return $hotkeys;
1916         }
1917
1918         function get_hotkeys_map($link) {
1919                 $hotkeys = array(
1920 //                      "navigation" => array(
1921                                 "k" => "next_feed",
1922                                 "j" => "prev_feed",
1923                                 "n" => "next_article",
1924                                 "p" => "prev_article",
1925                                 "(38)|up" => "prev_article",
1926                                 "(40)|down" => "next_article",
1927 //                              "^(38)|Ctrl-up" => "prev_article_noscroll",
1928 //                              "^(40)|Ctrl-down" => "next_article_noscroll",
1929                                 "(191)|/" => "search_dialog",
1930 //                      "article" => array(
1931                                 "s" => "toggle_mark",
1932                                 "*s" => "toggle_publ",
1933                                 "u" => "toggle_unread",
1934                                 "*t" => "edit_tags",
1935                                 "*d" => "dismiss_selected",
1936                                 "*x" => "dismiss_read",
1937                                 "o" => "open_in_new_window",
1938                                 "c p" => "catchup_below",
1939                                 "c n" => "catchup_above",
1940                                 "*n" => "article_scroll_down",
1941                                 "*p" => "article_scroll_up",
1942                                 "a *w" => "toggle_widescreen",
1943                                 "e" => "email_article",
1944                                 "a q" => "close_article",
1945 //                      "article_selection" => array(
1946                                 "a a" => "select_all",
1947                                 "a u" => "select_unread",
1948                                 "a *u" => "select_marked",
1949                                 "a p" => "select_published",
1950                                 "a i" => "select_invert",
1951                                 "a n" => "select_none",
1952 //                      "feed" => array(
1953                                 "f r" => "feed_refresh",
1954                                 "f a" => "feed_unhide_read",
1955                                 "f s" => "feed_subscribe",
1956                                 "f e" => "feed_edit",
1957                                 "f q" => "feed_catchup",
1958                                 "f x" => "feed_reverse",
1959                                 "f *d" => "feed_debug_update",
1960                                 "f *c" => "toggle_combined_mode",
1961                                 "*q" => "catchup_all",
1962                                 "x" => "cat_toggle_collapse",
1963 //                      "goto" => array(
1964                                 "g a" => "goto_all",
1965                                 "g f" => "goto_fresh",
1966                                 "g s" => "goto_marked",
1967                                 "g p" => "goto_published",
1968                                 "g t" => "goto_tagcloud",
1969                                 "g *p" => "goto_prefs",
1970 //                      "other" => array(
1971                                 "(9)|Tab" => "select_article_cursor", // tab
1972                                 "c l" => "create_label",
1973                                 "c f" => "create_filter",
1974                                 "c s" => "collapse_sidebar",
1975                                 "^(191)|Ctrl+/" => "help_dialog",
1976                         );
1977
1978                 if (get_pref($link, 'COMBINED_DISPLAY_MODE')) {
1979                         $hotkeys["^(38)|Ctrl-up"] = "prev_article_noscroll";
1980                         $hotkeys["^(40)|Ctrl-down"] = "next_article_noscroll";
1981                 }
1982
1983                 global $pluginhost;
1984                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_HOTKEY_MAP) as $plugin) {
1985                         $hotkeys = $plugin->hook_hotkey_map($hotkeys);
1986                 }
1987
1988                 $prefixes = array();
1989
1990                 foreach (array_keys($hotkeys) as $hotkey) {
1991                         $pair = explode(" ", $hotkey, 2);
1992
1993                         if (count($pair) > 1 && !in_array($pair[0], $prefixes)) {
1994                                 array_push($prefixes, $pair[0]);
1995                         }
1996                 }
1997
1998                 return array($prefixes, $hotkeys);
1999         }
2000
2001         function make_runtime_info($link) {
2002                 $data = array();
2003
2004                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2005                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2006
2007                 $max_feed_id = db_fetch_result($result, 0, "mid");
2008                 $num_feeds = db_fetch_result($result, 0, "nf");
2009
2010                 $data["max_feed_id"] = (int) $max_feed_id;
2011                 $data["num_feeds"] = (int) $num_feeds;
2012
2013                 $data['last_article_id'] = getLastArticleId($link);
2014                 $data['cdm_expanded'] = get_pref($link, 'CDM_EXPANDED');
2015
2016                 if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
2017
2018                         $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
2019
2020                         if (time() - $_SESSION["daemon_stamp_check"] > 30) {
2021
2022                                 $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
2023
2024                                 if ($stamp) {
2025                                         $stamp_delta = time() - $stamp;
2026
2027                                         if ($stamp_delta > 1800) {
2028                                                 $stamp_check = 0;
2029                                         } else {
2030                                                 $stamp_check = 1;
2031                                                 $_SESSION["daemon_stamp_check"] = time();
2032                                         }
2033
2034                                         $data['daemon_stamp_ok'] = $stamp_check;
2035
2036                                         $stamp_fmt = date("Y.m.d, G:i", $stamp);
2037
2038                                         $data['daemon_stamp'] = $stamp_fmt;
2039                                 }
2040                         }
2041                 }
2042
2043                 if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
2044                                 $new_version_details = @check_for_update($link);
2045
2046                                 $data['new_version_available'] = (int) ($new_version_details != false);
2047
2048                                 $_SESSION["last_version_check"] = time();
2049                                 $_SESSION["version_data"] = $new_version_details;
2050                 }
2051
2052                 return $data;
2053         }
2054
2055         function search_to_sql($link, $search, $match_on) {
2056
2057                 $search_query_part = "";
2058
2059                 $keywords = explode(" ", $search);
2060                 $query_keywords = array();
2061
2062                 foreach ($keywords as $k) {
2063                         if (strpos($k, "-") === 0) {
2064                                 $k = substr($k, 1);
2065                                 $not = "NOT";
2066                         } else {
2067                                 $not = "";
2068                         }
2069
2070                         $commandpair = explode(":", mb_strtolower($k), 2);
2071
2072                         if ($commandpair[0] == "note" && $commandpair[1]) {
2073
2074                                 if ($commandpair[1] == "true")
2075                                         array_push($query_keywords, "($not (note IS NOT NULL AND note != ''))");
2076                                 else
2077                                         array_push($query_keywords, "($not (note IS NULL OR note = ''))");
2078
2079                         } else if ($commandpair[0] == "star" && $commandpair[1]) {
2080
2081                                 if ($commandpair[1] == "true")
2082                                         array_push($query_keywords, "($not (marked = true))");
2083                                 else
2084                                         array_push($query_keywords, "($not (marked = false))");
2085
2086                         } else if ($commandpair[0] == "pub" && $commandpair[1]) {
2087
2088                                 if ($commandpair[1] == "true")
2089                                         array_push($query_keywords, "($not (published = true))");
2090                                 else
2091                                         array_push($query_keywords, "($not (published = false))");
2092
2093                         } else if (strpos($k, "@") === 0) {
2094
2095                                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $_SESSION['uid']);
2096                                 $orig_ts = strtotime(substr($k, 1));
2097                                 $k = date("Y-m-d", convert_timestamp($orig_ts, $user_tz_string, 'UTC'));
2098
2099                                 //$k = date("Y-m-d", strtotime(substr($k, 1)));
2100
2101                                 array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
2102                         } else if ($match_on == "both") {
2103                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2104                                                 OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2105                         } else if ($match_on == "title") {
2106                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%'))");
2107                         } else if ($match_on == "content") {
2108                                 array_push($query_keywords, "(UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2109                         }
2110                 }
2111
2112                 $search_query_part = implode("AND", $query_keywords);
2113
2114                 return $search_query_part;
2115         }
2116
2117         function getParentCategories($link, $cat, $owner_uid) {
2118                 $rv = array();
2119
2120                 $result = db_query($link, "SELECT parent_cat FROM ttrss_feed_categories
2121                         WHERE id = '$cat' AND parent_cat IS NOT NULL AND owner_uid = $owner_uid");
2122
2123                 while ($line = db_fetch_assoc($result)) {
2124                         array_push($rv, $line["parent_cat"]);
2125                         $rv = array_merge($rv, getParentCategories($link, $line["parent_cat"], $owner_uid));
2126                 }
2127
2128                 return $rv;
2129         }
2130
2131         function getChildCategories($link, $cat, $owner_uid) {
2132                 $rv = array();
2133
2134                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories
2135                         WHERE parent_cat = '$cat' AND owner_uid = $owner_uid");
2136
2137                 while ($line = db_fetch_assoc($result)) {
2138                         array_push($rv, $line["id"]);
2139                         $rv = array_merge($rv, getChildCategories($link, $line["id"], $owner_uid));
2140                 }
2141
2142                 return $rv;
2143         }
2144
2145         function queryFeedHeadlines($link, $feed, $limit, $view_mode, $cat_view, $search, $search_mode, $match_on, $override_order = false, $offset = 0, $owner_uid = 0, $filter = false, $since_id = 0, $include_children = false, $ignore_vfeed_group = false) {
2146
2147                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2148
2149                 $ext_tables_part = "";
2150
2151                         if ($search) {
2152
2153                                 if (SPHINX_ENABLED) {
2154                                         $ids = join(",", @sphinx_search($search, 0, 500));
2155
2156                                         if ($ids)
2157                                                 $search_query_part = "ref_id IN ($ids) AND ";
2158                                         else
2159                                                 $search_query_part = "ref_id = -1 AND ";
2160
2161                                 } else {
2162                                         $search_query_part = search_to_sql($link, $search, $match_on);
2163                                         $search_query_part .= " AND ";
2164                                 }
2165
2166                         } else {
2167                                 $search_query_part = "";
2168                         }
2169
2170                         if ($filter) {
2171
2172                                 if (DB_TYPE == "pgsql") {
2173                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '14 days' ";
2174                                 } else {
2175                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL 14 DAY) ";
2176                                 }
2177
2178                                 $override_order = "updated DESC";
2179
2180                                 $filter_query_part = filter_to_sql($link, $filter, $owner_uid);
2181
2182                                 // Try to check if SQL regexp implementation chokes on a valid regexp
2183                                 $result = db_query($link, "SELECT true AS true_val FROM ttrss_entries,
2184                                         ttrss_user_entries, ttrss_feeds, ttrss_feed_categories
2185                                         WHERE $filter_query_part LIMIT 1", false);
2186
2187                                 if ($result) {
2188                                         $test = db_fetch_result($result, 0, "true_val");
2189
2190                                         if (!$test) {
2191                                                 $filter_query_part = "false AND";
2192                                         } else {
2193                                                 $filter_query_part .= " AND";
2194                                         }
2195                                 } else {
2196                                         $filter_query_part = "false AND";
2197                                 }
2198
2199                         } else {
2200                                 $filter_query_part = "";
2201                         }
2202
2203                         if ($since_id) {
2204                                 $since_id_part = "ttrss_entries.id > $since_id AND ";
2205                         } else {
2206                                 $since_id_part = "";
2207                         }
2208
2209                         $view_query_part = "";
2210
2211                         if ($view_mode == "adaptive" || $view_query_part == "noscores") {
2212                                 if ($search) {
2213                                         $view_query_part = " ";
2214                                 } else if ($feed != -1) {
2215                                         $unread = getFeedUnread($link, $feed, $cat_view);
2216
2217                                         if ($cat_view && $feed > 0 && $include_children)
2218                                                 $unread += getCategoryChildrenUnread($link, $feed);
2219
2220                                         if ($unread > 0) {
2221                                                 $view_query_part = " unread = true AND ";
2222                                         }
2223                                 }
2224                         }
2225
2226                         if ($view_mode == "marked") {
2227                                 $view_query_part = " marked = true AND ";
2228                         }
2229
2230                         if ($view_mode == "published") {
2231                                 $view_query_part = " published = true AND ";
2232                         }
2233
2234                         if ($view_mode == "unread") {
2235                                 $view_query_part = " unread = true AND ";
2236                         }
2237
2238                         if ($view_mode == "updated") {
2239                                 $view_query_part = " (last_read is null and unread = false) AND ";
2240                         }
2241
2242                         if ($limit > 0) {
2243                                 $limit_query_part = "LIMIT " . $limit;
2244                         }
2245
2246                         $allow_archived = false;
2247
2248                         $vfeed_query_part = "";
2249
2250                         // override query strategy and enable feed display when searching globally
2251                         if ($search && $search_mode == "all_feeds") {
2252                                 $query_strategy_part = "true";
2253                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2254                         /* tags */
2255                         } else if (!is_numeric($feed)) {
2256                                 $query_strategy_part = "true";
2257                                 $vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
2258                                         id = feed_id) as feed_title,";
2259                         } else if ($search && $search_mode == "this_cat") {
2260                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2261
2262                                 if ($feed > 0) {
2263                                         if ($include_children) {
2264                                                 $subcats = getChildCategories($link, $feed, $owner_uid);
2265                                                 array_push($subcats, $feed);
2266                                                 $cats_qpart = join(",", $subcats);
2267                                         } else {
2268                                                 $cats_qpart = $feed;
2269                                         }
2270
2271                                         $query_strategy_part = "ttrss_feeds.cat_id IN ($cats_qpart)";
2272
2273                                 } else {
2274                                         $query_strategy_part = "ttrss_feeds.cat_id IS NULL";
2275                                 }
2276
2277                         } else if ($feed > 0) {
2278
2279                                 if ($cat_view) {
2280
2281                                         if ($feed > 0) {
2282                                                 if ($include_children) {
2283                                                         # sub-cats
2284                                                         $subcats = getChildCategories($link, $feed, $owner_uid);
2285
2286                                                         array_push($subcats, $feed);
2287                                                         $query_strategy_part = "cat_id IN (".
2288                                                                         implode(",", $subcats).")";
2289
2290                                                 } else {
2291                                                         $query_strategy_part = "cat_id = '$feed'";
2292                                                 }
2293
2294                                         } else {
2295                                                 $query_strategy_part = "cat_id IS NULL";
2296                                         }
2297
2298                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2299
2300                                 } else {
2301                                         $query_strategy_part = "feed_id = '$feed'";
2302                                 }
2303                         } else if ($feed == 0 && !$cat_view) { // archive virtual feed
2304                                 $query_strategy_part = "feed_id IS NULL";
2305                                 $allow_archived = true;
2306                         } else if ($feed == 0 && $cat_view) { // uncategorized
2307                                 $query_strategy_part = "cat_id IS NULL AND feed_id IS NOT NULL";
2308                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2309                         } else if ($feed == -1) { // starred virtual feed
2310                                 $query_strategy_part = "marked = true";
2311                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2312                                 $allow_archived = true;
2313
2314                                 if (!$override_order) $override_order = "last_marked DESC, updated DESC";
2315
2316                         } else if ($feed == -2) { // published virtual feed OR labels category
2317
2318                                 if (!$cat_view) {
2319                                         $query_strategy_part = "published = true";
2320                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2321                                         $allow_archived = true;
2322
2323                                         if (!$override_order) $override_order = "last_published DESC, updated DESC";
2324                                 } else {
2325                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2326
2327                                         $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2328
2329                                         $query_strategy_part = "ttrss_labels2.id = ttrss_user_labels2.label_id AND
2330                                                 ttrss_user_labels2.article_id = ref_id";
2331
2332                                 }
2333                         } else if ($feed == -6) { // recently read
2334                                 $query_strategy_part = "unread = false AND last_read IS NOT NULL";
2335                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2336                                 $allow_archived = true;
2337
2338                                 if (!$override_order) $override_order = "last_read DESC";
2339                         } else if ($feed == -3) { // fresh virtual feed
2340                                 $query_strategy_part = "unread = true AND score >= 0";
2341
2342                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
2343
2344                                 if (DB_TYPE == "pgsql") {
2345                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
2346                                 } else {
2347                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
2348                                 }
2349
2350                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2351                         } else if ($feed == -4) { // all articles virtual feed
2352                                 $query_strategy_part = "true";
2353                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2354                         } else if ($feed <= -10) { // labels
2355                                 $label_id = -$feed - 11;
2356
2357                                 $query_strategy_part = "label_id = '$label_id' AND
2358                                         ttrss_labels2.id = ttrss_user_labels2.label_id AND
2359                                         ttrss_user_labels2.article_id = ref_id";
2360
2361                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2362                                 $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2363                                 $allow_archived = true;
2364
2365                         } else {
2366                                 $query_strategy_part = "true";
2367                         }
2368
2369                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
2370                                 $date_sort_field = "updated";
2371                         } else {
2372                                 $date_sort_field = "date_entered";
2373                         }
2374
2375                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
2376                                 $order_by = "$date_sort_field";
2377                         } else {
2378                                 $order_by = "$date_sort_field DESC";
2379                         }
2380
2381                         if ($view_mode != "noscores") {
2382                                 $order_by = "score DESC, $order_by";
2383                         }
2384
2385                         if ($override_order) {
2386                                 $order_by = $override_order;
2387                         }
2388
2389                         $feed_title = "";
2390
2391                         if ($search) {
2392                                 $feed_title = T_sprintf("Search results: %s", $search);
2393                         } else {
2394                                 if ($cat_view) {
2395                                         $feed_title = getCategoryTitle($link, $feed);
2396                                 } else {
2397                                         if (is_numeric($feed) && $feed > 0) {
2398                                                 $result = db_query($link, "SELECT title,site_url,last_error
2399                                                         FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = $owner_uid");
2400
2401                                                 $feed_title = db_fetch_result($result, 0, "title");
2402                                                 $feed_site_url = db_fetch_result($result, 0, "site_url");
2403                                                 $last_error = db_fetch_result($result, 0, "last_error");
2404                                         } else {
2405                                                 $feed_title = getFeedTitle($link, $feed);
2406                                         }
2407                                 }
2408                         }
2409
2410                         $content_query_part = "content as content_preview, cached_content, ";
2411
2412                         if (is_numeric($feed)) {
2413
2414                                 if ($feed >= 0) {
2415                                         $feed_kind = "Feeds";
2416                                 } else {
2417                                         $feed_kind = "Labels";
2418                                 }
2419
2420                                 if ($limit_query_part) {
2421                                         $offset_query_part = "OFFSET $offset";
2422                                 }
2423
2424                                 // proper override_order applied above
2425                                 if ($vfeed_query_part && !$ignore_vfeed_group && get_pref($link, 'VFEED_GROUP_BY_FEED', $owner_uid)) {
2426                                         if (!$override_order) {
2427                                                 $order_by = "ttrss_feeds.title, $order_by";
2428                                         } else {
2429                                                 $order_by = "ttrss_feeds.title, $override_order";
2430                                         }
2431                                 }
2432
2433                                 if (!$allow_archived) {
2434                                         $from_qpart = "ttrss_entries,ttrss_user_entries,ttrss_feeds$ext_tables_part";
2435                                         $feed_check_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
2436
2437                                 } else {
2438                                         $from_qpart = "ttrss_entries$ext_tables_part,ttrss_user_entries
2439                                                 LEFT JOIN ttrss_feeds ON (feed_id = ttrss_feeds.id)";
2440                                 }
2441
2442                                 $query = "SELECT DISTINCT
2443                                                 date_entered,
2444                                                 guid,
2445                                                 ttrss_entries.id,ttrss_entries.title,
2446                                                 updated,
2447                                                 label_cache,
2448                                                 tag_cache,
2449                                                 always_display_enclosures,
2450                                                 site_url,
2451                                                 note,
2452                                                 num_comments,
2453                                                 comments,
2454                                                 int_id,
2455                                                 unread,feed_id,marked,published,link,last_read,orig_feed_id,
2456                                                 last_marked, last_published,
2457                                                 ".SUBSTRING_FOR_DATE."(last_read,1,19) as last_read_noms,
2458                                                 $vfeed_query_part
2459                                                 $content_query_part
2460                                                 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated_noms,
2461                                                 author,score
2462                                         FROM
2463                                                 $from_qpart
2464                                         WHERE
2465                                         $feed_check_qpart
2466                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
2467                                         ttrss_user_entries.owner_uid = '$owner_uid' AND
2468                                         $search_query_part
2469                                         $filter_query_part
2470                                         $view_query_part
2471                                         $since_id_part
2472                                         $query_strategy_part ORDER BY $order_by
2473                                         $limit_query_part $offset_query_part";
2474
2475                                 if ($_REQUEST["debug"]) print $query;
2476
2477                                 $result = db_query($link, $query);
2478
2479                         } else {
2480                                 // browsing by tag
2481
2482                                 $select_qpart = "SELECT DISTINCT " .
2483                                                                 "date_entered," .
2484                                                                 "guid," .
2485                                                                 "note," .
2486                                                                 "ttrss_entries.id as id," .
2487                                                                 "title," .
2488                                                                 "updated," .
2489                                                                 "unread," .
2490                                                                 "feed_id," .
2491                                                                 "orig_feed_id," .
2492                                                                 "marked," .
2493                                                                 "num_comments, " .
2494                                                                 "comments, " .
2495                                                                 "tag_cache," .
2496                                                                 "label_cache," .
2497                                                                 "link," .
2498                                                                 "last_read," .
2499                                                                 "last_marked, last_published, " .
2500                                                                 SUBSTRING_FOR_DATE . "(last_read,1,19) as last_read_noms," .
2501                                                                 $since_id_part .
2502                                                                 $vfeed_query_part .
2503                                                                 $content_query_part .
2504                                                                 SUBSTRING_FOR_DATE . "(updated,1,19) as updated_noms," .
2505                                                                 "score ";
2506
2507                                 $feed_kind = "Tags";
2508                                 $all_tags = explode(",", $feed);
2509                                 if ($search_mode == 'any') {
2510                                         $tag_sql = "tag_name in (" . implode(", ", array_map("db_quote", $all_tags)) . ")";
2511                                         $from_qpart = " FROM ttrss_entries,ttrss_user_entries,ttrss_tags ";
2512                                         $where_qpart = " WHERE " .
2513                                                                    "ref_id = ttrss_entries.id AND " .
2514                                                                    "ttrss_user_entries.owner_uid = $owner_uid AND " .
2515                                                                    "post_int_id = int_id AND $tag_sql AND " .
2516                                                                    $view_query_part .
2517                                                                    $search_query_part .
2518                                                                    $query_strategy_part . " ORDER BY $order_by " .
2519                                                                    $limit_query_part;
2520
2521                                 } else {
2522                                         $i = 1;
2523                                         $sub_selects = array();
2524                                         $sub_ands = array();
2525                                         foreach ($all_tags as $term) {
2526                                                 array_push($sub_selects, "(SELECT post_int_id from ttrss_tags WHERE tag_name = " . db_quote($term) . " AND owner_uid = $owner_uid) as A$i");
2527                                                 $i++;
2528                                         }
2529                                         if ($i > 2) {
2530                                                 $x = 1;
2531                                                 $y = 2;
2532                                                 do {
2533                                                         array_push($sub_ands, "A$x.post_int_id = A$y.post_int_id");
2534                                                         $x++;
2535                                                         $y++;
2536                                                 } while ($y < $i);
2537                                         }
2538                                         array_push($sub_ands, "A1.post_int_id = ttrss_user_entries.int_id and ttrss_user_entries.owner_uid = $owner_uid");
2539                                         array_push($sub_ands, "ttrss_user_entries.ref_id = ttrss_entries.id");
2540                                         $from_qpart = " FROM " . implode(", ", $sub_selects) . ", ttrss_user_entries, ttrss_entries";
2541                                         $where_qpart = " WHERE " . implode(" AND ", $sub_ands);
2542                                 }
2543                                 //                              error_log("TAG SQL: " . $tag_sql);
2544                                 // $tag_sql = "tag_name = '$feed'";   DEFAULT way
2545
2546                                 //                              error_log("[". $select_qpart . "][" . $from_qpart . "][" .$where_qpart . "]");
2547                                 $result = db_query($link, $select_qpart . $from_qpart . $where_qpart);
2548                         }
2549
2550                         return array($result, $feed_title, $feed_site_url, $last_error);
2551
2552         }
2553
2554         function sanitize($link, $str, $force_strip_tags = false, $owner = false, $site_url = false) {
2555                 if (!$owner) $owner = $_SESSION["uid"];
2556
2557                 $res = trim($str); if (!$res) return '';
2558
2559                 if (get_pref($link, "STRIP_IMAGES", $owner)) {
2560                         $res = preg_replace('/<img[^>]+>/is', '', $res);
2561                 }
2562
2563                 if (strpos($res, "href=") === false)
2564                         $res = rewrite_urls($res);
2565
2566                 $charset_hack = '<head>
2567                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
2568                 </head>';
2569
2570                 $res = trim($res); if (!$res) return '';
2571
2572                 libxml_use_internal_errors(true);
2573
2574                 $doc = new DOMDocument();
2575                 $doc->loadHTML($charset_hack . $res);
2576                 $xpath = new DOMXPath($doc);
2577
2578                 $entries = $xpath->query('(//a[@href]|//img[@src])');
2579
2580                 foreach ($entries as $entry) {
2581
2582                         if ($site_url) {
2583
2584                                 if ($entry->hasAttribute('href'))
2585                                         $entry->setAttribute('href',
2586                                                 rewrite_relative_url($site_url, $entry->getAttribute('href')));
2587
2588                                 if ($entry->hasAttribute('src'))
2589                                         if (preg_match('/^image.php\?i=[a-z0-9]+$/', $entry->getAttribute('src')) == 0)
2590                                                 $entry->setAttribute('src',
2591                                                         rewrite_relative_url($site_url, $entry->getAttribute('src')));
2592                         }
2593
2594                         if (strtolower($entry->nodeName) == "a") {
2595                                 $entry->setAttribute("target", "_blank");
2596                         }
2597                 }
2598
2599                 //$node = $doc->getElementsByTagName('body')->item(0);
2600
2601                 $doc->removeChild($doc->firstChild); //remove doctype
2602                 $res = $doc->saveHTML();
2603
2604                 $config = array('safe' => 1, 'deny_attribute' => 'style, width, height, class, id', 'comment' => 1, 'cdata' => 1, 'balance' => 0);
2605                 $spec = 'img=width,height';
2606                 $res = htmLawed($res, $config, $spec);
2607
2608                 return $res;
2609         }
2610
2611         function check_for_update($link) {
2612                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2613                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION .
2614                                 "&iid=" . sha1(SELF_URL_PATH);
2615
2616                         $version_data = @fetch_file_contents($version_url);
2617
2618                         if ($version_data) {
2619                                 $version_data = json_decode($version_data, true);
2620                                 if ($version_data && $version_data['version']) {
2621
2622                                         if (version_compare(VERSION, $version_data['version']) == -1) {
2623                                                 return $version_data;
2624                                         }
2625                                 }
2626                         }
2627                 }
2628                 return false;
2629         }
2630
2631         function catchupArticlesById($link, $ids, $cmode, $owner_uid = false) {
2632
2633                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2634                 if (count($ids) == 0) return;
2635
2636                 $tmp_ids = array();
2637
2638                 foreach ($ids as $id) {
2639                         array_push($tmp_ids, "ref_id = '$id'");
2640                 }
2641
2642                 $ids_qpart = join(" OR ", $tmp_ids);
2643
2644                 if ($cmode == 0) {
2645                         db_query($link, "UPDATE ttrss_user_entries SET
2646                         unread = false,last_read = NOW()
2647                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2648                 } else if ($cmode == 1) {
2649                         db_query($link, "UPDATE ttrss_user_entries SET
2650                         unread = true
2651                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2652                 } else {
2653                         db_query($link, "UPDATE ttrss_user_entries SET
2654                         unread = NOT unread,last_read = NOW()
2655                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2656                 }
2657
2658                 /* update ccache */
2659
2660                 $result = db_query($link, "SELECT DISTINCT feed_id FROM ttrss_user_entries
2661                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2662
2663                 while ($line = db_fetch_assoc($result)) {
2664                         ccache_update($link, $line["feed_id"], $owner_uid);
2665                 }
2666         }
2667
2668         function get_article_tags($link, $id, $owner_uid = 0, $tag_cache = false) {
2669
2670                 $a_id = db_escape_string($id);
2671
2672                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2673
2674                 $query = "SELECT DISTINCT tag_name,
2675                         owner_uid as owner FROM
2676                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
2677                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
2678
2679                 $obj_id = md5("TAGS:$owner_uid:$id");
2680                 $tags = array();
2681
2682                 /* check cache first */
2683
2684                 if ($tag_cache === false) {
2685                         $result = db_query($link, "SELECT tag_cache FROM ttrss_user_entries
2686                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2687
2688                         $tag_cache = db_fetch_result($result, 0, "tag_cache");
2689                 }
2690
2691                 if ($tag_cache) {
2692                         $tags = explode(",", $tag_cache);
2693                 } else {
2694
2695                         /* do it the hard way */
2696
2697                         $tmp_result = db_query($link, $query);
2698
2699                         while ($tmp_line = db_fetch_assoc($tmp_result)) {
2700                                 array_push($tags, $tmp_line["tag_name"]);
2701                         }
2702
2703                         /* update the cache */
2704
2705                         $tags_str = db_escape_string(join(",", $tags));
2706
2707                         db_query($link, "UPDATE ttrss_user_entries
2708                                 SET tag_cache = '$tags_str' WHERE ref_id = '$id'
2709                                 AND owner_uid = $owner_uid");
2710                 }
2711
2712                 return $tags;
2713         }
2714
2715         function trim_array($array) {
2716                 $tmp = $array;
2717                 array_walk($tmp, 'trim');
2718                 return $tmp;
2719         }
2720
2721         function tag_is_valid($tag) {
2722                 if ($tag == '') return false;
2723                 if (preg_match("/^[0-9]*$/", $tag)) return false;
2724                 if (mb_strlen($tag) > 250) return false;
2725
2726                 if (function_exists('iconv')) {
2727                         $tag = iconv("utf-8", "utf-8", $tag);
2728                 }
2729
2730                 if (!$tag) return false;
2731
2732                 return true;
2733         }
2734
2735         function render_login_form($link, $form_id = 0) {
2736                 switch ($form_id) {
2737                 case 0:
2738                         require_once "login_form.php";
2739                         break;
2740                 case 1:
2741                         require_once "mobile/login_form.php";
2742                         break;
2743                 }
2744                 exit;
2745         }
2746
2747         // from http://developer.apple.com/internet/safari/faq.html
2748         function no_cache_incantation() {
2749                 header("Expires: Mon, 22 Dec 1980 00:00:00 GMT"); // Happy birthday to me :)
2750                 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
2751                 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); // HTTP/1.1
2752                 header("Cache-Control: post-check=0, pre-check=0", false);
2753                 header("Pragma: no-cache"); // HTTP/1.0
2754         }
2755
2756         function format_warning($msg, $id = "") {
2757                 global $link;
2758                 return "<div class=\"warning\" id=\"$id\">
2759                         <img src=\"".theme_image($link, "images/sign_excl.svg")."\">$msg</div>";
2760         }
2761
2762         function format_notice($msg, $id = "") {
2763                 global $link;
2764                 return "<div class=\"notice\" id=\"$id\">
2765                         <img src=\"".theme_image($link, "images/sign_info.svg")."\">$msg</div>";
2766         }
2767
2768         function format_error($msg, $id = "") {
2769                 global $link;
2770                 return "<div class=\"error\" id=\"$id\">
2771                         <img src=\"".theme_image($link, "images/sign_excl.svg")."\">$msg</div>";
2772         }
2773
2774         function print_notice($msg) {
2775                 return print format_notice($msg);
2776         }
2777
2778         function print_warning($msg) {
2779                 return print format_warning($msg);
2780         }
2781
2782         function print_error($msg) {
2783                 return print format_error($msg);
2784         }
2785
2786
2787         function T_sprintf() {
2788                 $args = func_get_args();
2789                 return vsprintf(__(array_shift($args)), $args);
2790         }
2791
2792         function format_inline_player($link, $url, $ctype) {
2793
2794                 $entry = "";
2795
2796                 if (strpos($ctype, "audio/") === 0) {
2797
2798                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
2799                                 strpos($_SERVER['HTTP_USER_AGENT'], "Chrome") !== false ||
2800                                 strpos($_SERVER['HTTP_USER_AGENT'], "Safari") !== false )) {
2801
2802                                 $id = 'AUDIO-' . uniqid();
2803
2804                                 $entry .= "<audio id=\"$id\"\" controls style='display : none'>
2805                                         <source type=\"$ctype\" src=\"$url\"></source>
2806                                         </audio>";
2807
2808                                 $entry .= "<span onclick=\"player(this)\"
2809                                         title=\"".__("Click to play")."\" status=\"0\"
2810                                         class=\"player\" audio-id=\"$id\">".__("Play")."</span>";
2811
2812                         } else {
2813
2814                                 $entry .= "<object type=\"application/x-shockwave-flash\"
2815                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
2816                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
2817                                         <param name=\"movie\"
2818                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
2819                                         </object>";
2820                         }
2821
2822                         if ($entry) $entry .= "&nbsp;" . basename($url);
2823
2824                         return $entry;
2825
2826                 }
2827
2828                 return "";
2829
2830 /*              $filename = substr($url, strrpos($url, "/")+1);
2831
2832                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
2833                         $filename . " (" . $ctype . ")" . "</a>"; */
2834
2835         }
2836
2837         function format_article($link, $id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
2838                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2839
2840                 $rv = array();
2841
2842                 $rv['id'] = $id;
2843
2844                 /* we can figure out feed_id from article id anyway, why do we
2845                  * pass feed_id here? let's ignore the argument :( */
2846
2847                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
2848                         WHERE ref_id = '$id'");
2849
2850                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
2851
2852                 $rv['feed_id'] = $feed_id;
2853
2854                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
2855
2856                 if ($mark_as_read) {
2857                         $result = db_query($link, "UPDATE ttrss_user_entries
2858                                 SET unread = false,last_read = NOW()
2859                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2860
2861                         ccache_update($link, $feed_id, $owner_uid);
2862                 }
2863
2864                 $result = db_query($link, "SELECT id,title,link,content,feed_id,comments,int_id,
2865                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
2866                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
2867                         num_comments,
2868                         tag_cache,
2869                         author,
2870                         orig_feed_id,
2871                         note,
2872                         cached_content
2873                         FROM ttrss_entries,ttrss_user_entries
2874                         WHERE   id = '$id' AND ref_id = id AND owner_uid = $owner_uid");
2875
2876                 if ($result) {
2877
2878                         $line = db_fetch_assoc($result);
2879
2880                         $tag_cache = $line["tag_cache"];
2881
2882                         $line["tags"] = get_article_tags($link, $id, $owner_uid, $line["tag_cache"]);
2883                         unset($line["tag_cache"]);
2884
2885                         $line["content"] = sanitize($link, $line["content"], false, $owner_uid, $line["site_url"]);
2886
2887                         global $pluginhost;
2888
2889                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_RENDER_ARTICLE) as $p) {
2890                                 $line = $p->hook_render_article($line);
2891                         }
2892
2893                         $num_comments = $line["num_comments"];
2894                         $entry_comments = "";
2895
2896                         if ($num_comments > 0) {
2897                                 if ($line["comments"]) {
2898                                         $comments_url = htmlspecialchars($line["comments"]);
2899                                 } else {
2900                                         $comments_url = htmlspecialchars($line["link"]);
2901                                 }
2902                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
2903                         } else {
2904                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
2905                                         $entry_comments = "<a target='_blank' href=\"".htmlspecialchars($line["comments"])."\">comments</a>";
2906                                 }
2907                         }
2908
2909                         if ($zoom_mode) {
2910                                 header("Content-Type: text/html");
2911                                 $rv['content'] .= "<html><head>
2912                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
2913                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
2914                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
2915                                         </head><body>";
2916                         }
2917
2918                         $title_escaped = htmlspecialchars($line['title']);
2919
2920                         $rv['content'] .= "<div id=\"PTITLE-FULL-$id\" style=\"display : none\">" .
2921                                 strip_tags($line['title']) . "</div>";
2922
2923                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
2924
2925                         $rv['content'] .= "<div class=\"postHeader\" id=\"POSTHDR-$id\">";
2926
2927                         $entry_author = $line["author"];
2928
2929                         if ($entry_author) {
2930                                 $entry_author = __(" - ") . $entry_author;
2931                         }
2932
2933                         $parsed_updated = make_local_datetime($link, $line["updated"], true,
2934                                 $owner_uid, true);
2935
2936                         $rv['content'] .= "<div class=\"postDate\">$parsed_updated</div>";
2937
2938                         if ($line["link"]) {
2939                                 $rv['content'] .= "<div class='postTitle'><a target='_blank'
2940                                         title=\"".htmlspecialchars($line['title'])."\"
2941                                         href=\"" .
2942                                         htmlspecialchars($line["link"]) . "\">" .
2943                                         $line["title"] .
2944                                         "<span class='author'>$entry_author</span></a></div>";
2945                         } else {
2946                                 $rv['content'] .= "<div class='postTitle'>" . $line["title"] . "$entry_author</div>";
2947                         }
2948
2949                         $tags_str = format_tags_string($line["tags"], $id);
2950                         $tags_str_full = join(", ", $line["tags"]);
2951
2952                         if (!$tags_str_full) $tags_str_full = __("no tags");
2953
2954                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
2955
2956                         $rv['content'] .= "<div class='postTags' style='float : right'>
2957                                 <img src='".theme_image($link, 'images/tag.png')."'
2958                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
2959
2960                         if (!$zoom_mode) {
2961                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
2962                                         <a title=\"".__('Edit tags for this article')."\"
2963                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
2964
2965                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
2966                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
2967                                         position=\"below\">$tags_str_full</div>";
2968
2969                                 global $pluginhost;
2970
2971                                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_ARTICLE_BUTTON) as $p) {
2972                                         $rv['content'] .= $p->hook_article_button($line);
2973                                 }
2974
2975
2976                         } else {
2977                                 $tags_str = strip_tags($tags_str);
2978                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
2979                         }
2980                         $rv['content'] .= "</div>";
2981                         $rv['content'] .= "<div clear='both'>$entry_comments</div>";
2982
2983                         if ($line["orig_feed_id"]) {
2984
2985                                 $tmp_result = db_query($link, "SELECT * FROM ttrss_archived_feeds
2986                                         WHERE id = ".$line["orig_feed_id"]);
2987
2988                                 if (db_num_rows($tmp_result) != 0) {
2989
2990                                         $rv['content'] .= "<div clear='both'>";
2991                                         $rv['content'] .= __("Originally from:");
2992
2993                                         $rv['content'] .= "&nbsp;";
2994
2995                                         $tmp_line = db_fetch_assoc($tmp_result);
2996
2997                                         $rv['content'] .= "<a target='_blank'
2998                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
2999                                                 $tmp_line['title'] . "</a>";
3000
3001                                         $rv['content'] .= "&nbsp;";
3002
3003                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3004                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.svg'></a>";
3005
3006                                         $rv['content'] .= "</div>";
3007                                 }
3008                         }
3009
3010                         $rv['content'] .= "</div>";
3011
3012                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3013                                 if ($line['note']) {
3014                                         $rv['content'] .= format_article_note($id, $line['note'], !$zoom_mode);
3015                                 }
3016                         $rv['content'] .= "</div>";
3017
3018                         $rv['content'] .= "<div class=\"postContent\">";
3019
3020                         // N-grams
3021
3022                         if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_RELATED_THRESHOLD')) {
3023
3024                                 $ngram_result = db_query($link, "SELECT id,title FROM
3025                                                 ttrss_entries,ttrss_user_entries
3026                                         WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
3027                                                 AND similarity(title, '$title_escaped') >= "._NGRAM_TITLE_RELATED_THRESHOLD."
3028                                                 AND title != '$title_escaped'
3029                                                 AND owner_uid = $owner_uid");
3030
3031                                 if (db_num_rows($ngram_result) > 0) {
3032                                         $rv['content'] .= "<div dojoType=\"dijit.form.DropDownButton\">".
3033                                                 "<span>" . __('Related')."</span>";
3034                                         $rv['content'] .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3035
3036                                         while ($nline = db_fetch_assoc($ngram_result)) {
3037                                                 $rv['content'] .= "<div onclick=\"hlOpenInNewTab(null,".$nline['id'].")\"
3038                                                         dojoType=\"dijit.MenuItem\">".$nline['title']."</div>";
3039
3040                                         }
3041                                         $rv['content'] .= "</div></div><br/";
3042                                 }
3043                         }
3044
3045                         $rv['content'] .= $line["content"];
3046
3047                         $rv['content'] .= format_article_enclosures($link, $id,
3048                                 $always_display_enclosures, $line["content"]);
3049
3050                         $rv['content'] .= "</div>";
3051
3052                         $rv['content'] .= "</div>";
3053
3054                 }
3055
3056                 if ($zoom_mode) {
3057                         $rv['content'] .= "
3058                                 <div style=\"text-align : center\">
3059                                 <button onclick=\"return window.close()\">".
3060                                         __("Close this window")."</button></div>";
3061                         $rv['content'] .= "</body></html>";
3062                 }
3063
3064                 return $rv;
3065
3066         }
3067
3068         function print_checkpoint($n, $s) {
3069                 $ts = microtime(true);
3070                 echo sprintf("<!-- CP[$n] %.4f seconds -->", $ts - $s);
3071                 return $ts;
3072         }
3073
3074         function sanitize_tag($tag) {
3075                 $tag = trim($tag);
3076
3077                 $tag = mb_strtolower($tag, 'utf-8');
3078
3079                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3080
3081 //              $tag = str_replace('"', "", $tag);
3082 //              $tag = str_replace("+", " ", $tag);
3083                 $tag = str_replace("technorati tag: ", "", $tag);
3084
3085                 return $tag;
3086         }
3087
3088         function get_self_url_prefix() {
3089                 if (strrpos(SELF_URL_PATH, "/") === strlen(SELF_URL_PATH)-1) {
3090                         return substr(SELF_URL_PATH, 0, strlen(SELF_URL_PATH)-1);
3091                 } else {
3092                         return SELF_URL_PATH;
3093                 }
3094         }
3095
3096         /**
3097          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3098          *
3099          * @return string The Mozilla Firefox feed adding URL.
3100          */
3101         function add_feed_url() {
3102                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3103
3104                 $url_path = get_self_url_prefix() .
3105                         "/public.php?op=subscribe&feed_url=%s";
3106                 return $url_path;
3107         } // function add_feed_url
3108
3109         function encrypt_password($pass, $salt = '', $mode2 = false) {
3110                 if ($salt && $mode2) {
3111                         return "MODE2:" . hash('sha256', $salt . $pass);
3112                 } else if ($salt) {
3113                         return "SHA1X:" . sha1("$salt:$pass");
3114                 } else {
3115                         return "SHA1:" . sha1($pass);
3116                 }
3117         } // function encrypt_password
3118
3119         function load_filters($link, $feed_id, $owner_uid, $action_id = false) {
3120                 $filters = array();
3121
3122                 $cat_id = (int)getFeedCategory($link, $feed_id);
3123
3124                 $result = db_query($link, "SELECT * FROM ttrss_filters2 WHERE
3125                         owner_uid = $owner_uid AND enabled = true");
3126
3127                 $check_cats = join(",", array_merge(
3128                         getParentCategories($link, $cat_id, $owner_uid),
3129                         array($cat_id)));
3130
3131                 while ($line = db_fetch_assoc($result)) {
3132                         $filter_id = $line["id"];
3133
3134                         $result2 = db_query($link, "SELECT
3135                                 r.reg_exp, r.feed_id, r.cat_id, r.cat_filter, t.name AS type_name
3136                                 FROM ttrss_filters2_rules AS r,
3137                                 ttrss_filter_types AS t
3138                                 WHERE
3139                                         (cat_id IS NULL OR cat_id IN ($check_cats)) AND
3140                                         (feed_id IS NULL OR feed_id = '$feed_id') AND
3141                                         filter_type = t.id AND filter_id = '$filter_id'");
3142
3143                         $rules = array();
3144                         $actions = array();
3145
3146                         while ($rule_line = db_fetch_assoc($result2)) {
3147 #                               print_r($rule_line);
3148
3149                                 $rule = array();
3150                                 $rule["reg_exp"] = $rule_line["reg_exp"];
3151                                 $rule["type"] = $rule_line["type_name"];
3152
3153                                 array_push($rules, $rule);
3154                         }
3155
3156                         $result2 = db_query($link, "SELECT a.action_param,t.name AS type_name
3157                                 FROM ttrss_filters2_actions AS a,
3158                                 ttrss_filter_actions AS t
3159                                 WHERE
3160                                         action_id = t.id AND filter_id = '$filter_id'");
3161
3162                         while ($action_line = db_fetch_assoc($result2)) {
3163 #                               print_r($action_line);
3164
3165                                 $action = array();
3166                                 $action["type"] = $action_line["type_name"];
3167                                 $action["param"] = $action_line["action_param"];
3168
3169                                 array_push($actions, $action);
3170                         }
3171
3172
3173                         $filter = array();
3174                         $filter["match_any_rule"] = sql_bool_to_bool($line["match_any_rule"]);
3175                         $filter["rules"] = $rules;
3176                         $filter["actions"] = $actions;
3177
3178                         if (count($rules) > 0 && count($actions) > 0) {
3179                                 array_push($filters, $filter);
3180                         }
3181                 }
3182
3183                 return $filters;
3184         }
3185
3186         function get_score_pic($score) {
3187                 if ($score > 100) {
3188                         return "score_high.png";
3189                 } else if ($score > 0) {
3190                         return "score_half_high.png";
3191                 } else if ($score < -100) {
3192                         return "score_low.png";
3193                 } else if ($score < 0) {
3194                         return "score_half_low.png";
3195                 } else {
3196                         return "score_neutral.png";
3197                 }
3198         }
3199
3200         function feed_has_icon($id) {
3201                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3202         }
3203
3204         function init_connection($link) {
3205                 if ($link) {
3206
3207                         if (DB_TYPE == "pgsql") {
3208                                 pg_query($link, "set client_encoding = 'UTF-8'");
3209                                 pg_set_client_encoding("UNICODE");
3210                                 pg_query($link, "set datestyle = 'ISO, european'");
3211                                 pg_query($link, "set TIME ZONE 0");
3212                         } else {
3213                                 db_query($link, "SET time_zone = '+0:0'");
3214
3215                                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
3216                                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
3217                                 }
3218                         }
3219
3220                         global $pluginhost;
3221
3222                         $pluginhost = new PluginHost($link);
3223                         $pluginhost->load(PLUGINS, $pluginhost::KIND_ALL);
3224
3225                         return true;
3226                 } else {
3227                         print "Unable to connect to database:" . db_last_error();
3228                         return false;
3229                 }
3230         }
3231
3232         function format_tags_string($tags, $id) {
3233
3234                 $tags_str = "";
3235                 $tags_nolinks_str = "";
3236
3237                 $num_tags = 0;
3238
3239                 $tag_limit = 6;
3240
3241                 $formatted_tags = array();
3242
3243                 foreach ($tags as $tag) {
3244                         $num_tags++;
3245                         $tag_escaped = str_replace("'", "\\'", $tag);
3246
3247                         if (mb_strlen($tag) > 30) {
3248                                 $tag = truncate_string($tag, 30);
3249                         }
3250
3251                         $tag_str = "<a href=\"javascript:viewfeed('$tag_escaped')\">$tag</a>";
3252
3253                         array_push($formatted_tags, $tag_str);
3254
3255                         $tmp_tags_str = implode(", ", $formatted_tags);
3256
3257                         if ($num_tags == $tag_limit || mb_strlen($tmp_tags_str) > 150) {
3258                                 break;
3259                         }
3260                 }
3261
3262                 $tags_str = implode(", ", $formatted_tags);
3263
3264                 if ($num_tags < count($tags)) {
3265                         $tags_str .= ", &hellip;";
3266                 }
3267
3268                 if ($num_tags == 0) {
3269                         $tags_str = __("no tags");
3270                 }
3271
3272                 return $tags_str;
3273
3274         }
3275
3276         function format_article_labels($labels, $id) {
3277
3278                 $labels_str = "";
3279
3280                 foreach ($labels as $l) {
3281                         $labels_str .= sprintf("<span class='hlLabelRef'
3282                                 style='color : %s; background-color : %s'>%s</span>",
3283                                         $l[2], $l[3], $l[1]);
3284                         }
3285
3286                 return $labels_str;
3287
3288         }
3289
3290         function format_article_note($id, $note, $allow_edit = true) {
3291
3292                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
3293                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
3294                         ($allow_edit ? __('(edit note)') : "")."</div>$note</div>";
3295
3296                 return $str;
3297         }
3298
3299
3300         function get_feed_category($link, $feed_cat, $parent_cat_id = false) {
3301                 if ($parent_cat_id) {
3302                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3303                         $parent_insert = "'$parent_cat_id'";
3304                 } else {
3305                         $parent_qpart = "parent_cat IS NULL";
3306                         $parent_insert = "NULL";
3307                 }
3308
3309                 $result = db_query($link,
3310                         "SELECT id FROM ttrss_feed_categories
3311                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3312
3313                 if (db_num_rows($result) == 0) {
3314                         return false;
3315                 } else {
3316                         return db_fetch_result($result, 0, "id");
3317                 }
3318         }
3319
3320         function add_feed_category($link, $feed_cat, $parent_cat_id = false) {
3321
3322                 if (!$feed_cat) return false;
3323
3324                 db_query($link, "BEGIN");
3325
3326                 if ($parent_cat_id) {
3327                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3328                         $parent_insert = "'$parent_cat_id'";
3329                 } else {
3330                         $parent_qpart = "parent_cat IS NULL";
3331                         $parent_insert = "NULL";
3332                 }
3333
3334                 $result = db_query($link,
3335                         "SELECT id FROM ttrss_feed_categories
3336                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3337
3338                 if (db_num_rows($result) == 0) {
3339
3340                         $result = db_query($link,
3341                                 "INSERT INTO ttrss_feed_categories (owner_uid,title,parent_cat)
3342                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat', $parent_insert)");
3343
3344                         db_query($link, "COMMIT");
3345
3346                         return true;
3347                 }
3348
3349                 return false;
3350         }
3351
3352         function getArticleFeed($link, $id) {
3353                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3354                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3355
3356                 if (db_num_rows($result) != 0) {
3357                         return db_fetch_result($result, 0, "feed_id");
3358                 } else {
3359                         return 0;
3360                 }
3361         }
3362
3363         /**
3364          * Fixes incomplete URLs by prepending "http://".
3365          * Also replaces feed:// with http://, and
3366          * prepends a trailing slash if the url is a domain name only.
3367          *
3368          * @param string $url Possibly incomplete URL
3369          *
3370          * @return string Fixed URL.
3371          */
3372         function fix_url($url) {
3373                 if (strpos($url, '://') === false) {
3374                         $url = 'http://' . $url;
3375                 } else if (substr($url, 0, 5) == 'feed:') {
3376                         $url = 'http:' . substr($url, 5);
3377                 }
3378
3379                 //prepend slash if the URL has no slash in it
3380                 // "http://www.example" -> "http://www.example/"
3381                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
3382                         $url .= '/';
3383                 }
3384
3385                 if ($url != "http:///")
3386                         return $url;
3387                 else
3388                         return '';
3389         }
3390
3391         function validate_feed_url($url) {
3392                 $parts = parse_url($url);
3393
3394                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
3395
3396         }
3397
3398         function get_article_enclosures($link, $id) {
3399
3400                 $query = "SELECT * FROM ttrss_enclosures
3401                         WHERE post_id = '$id' AND content_url != ''";
3402
3403                 $rv = array();
3404
3405                 $result = db_query($link, $query);
3406
3407                 if (db_num_rows($result) > 0) {
3408                         while ($line = db_fetch_assoc($result)) {
3409                                 array_push($rv, $line);
3410                         }
3411                 }
3412
3413                 return $rv;
3414         }
3415
3416         function save_email_address($link, $email) {
3417                 // FIXME: implement persistent storage of emails
3418
3419                 if (!$_SESSION['stored_emails'])
3420                         $_SESSION['stored_emails'] = array();
3421
3422                 if (!in_array($email, $_SESSION['stored_emails']))
3423                         array_push($_SESSION['stored_emails'], $email);
3424         }
3425
3426
3427         function get_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
3428
3429                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3430
3431                 $sql_is_cat = bool_to_sql_bool($is_cat);
3432
3433                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
3434                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
3435                         AND owner_uid = " . $owner_uid);
3436
3437                 if (db_num_rows($result) == 1) {
3438                         return db_fetch_result($result, 0, "access_key");
3439                 } else {
3440                         $key = db_escape_string(sha1(uniqid(rand(), true)));
3441
3442                         $result = db_query($link, "INSERT INTO ttrss_access_keys
3443                                 (access_key, feed_id, is_cat, owner_uid)
3444                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
3445
3446                         return $key;
3447                 }
3448                 return false;
3449         }
3450
3451         function get_feeds_from_html($url, $content)
3452         {
3453                 $url     = fix_url($url);
3454                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
3455
3456                 libxml_use_internal_errors(true);
3457
3458                 $doc = new DOMDocument();
3459                 $doc->loadHTML($content);
3460                 $xpath = new DOMXPath($doc);
3461                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
3462                 $feedUrls = array();
3463                 foreach ($entries as $entry) {
3464                         if ($entry->hasAttribute('href')) {
3465                                 $title = $entry->getAttribute('title');
3466                                 if ($title == '') {
3467                                         $title = $entry->getAttribute('type');
3468                                 }
3469                                 $feedUrl = rewrite_relative_url(
3470                                         $baseUrl, $entry->getAttribute('href')
3471                                 );
3472                                 $feedUrls[$feedUrl] = $title;
3473                         }
3474                 }
3475                 return $feedUrls;
3476         }
3477
3478         function is_html($content) {
3479                 return preg_match("/<html|DOCTYPE html/i", substr($content, 0, 20)) !== 0;
3480         }
3481
3482         function url_is_html($url, $login = false, $pass = false) {
3483                 return is_html(fetch_file_contents($url, false, $login, $pass));
3484         }
3485
3486         function print_label_select($link, $name, $value, $attributes = "") {
3487
3488                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
3489                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
3490
3491                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
3492                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
3493
3494                 while ($line = db_fetch_assoc($result)) {
3495
3496                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
3497
3498                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
3499                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
3500
3501                 }
3502
3503 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
3504
3505                 print "</select>";
3506
3507
3508         }
3509
3510         function format_article_enclosures($link, $id, $always_display_enclosures,
3511                                         $article_content) {
3512
3513                 $result = get_article_enclosures($link, $id);
3514                 $rv = '';
3515
3516                 if (count($result) > 0) {
3517
3518                         $entries_html = array();
3519                         $entries = array();
3520                         $entries_inline = array();
3521
3522                         foreach ($result as $line) {
3523
3524                                 $url = $line["content_url"];
3525                                 $ctype = $line["content_type"];
3526
3527                                 if (!$ctype) $ctype = __("unknown type");
3528
3529                                 $filename = substr($url, strrpos($url, "/")+1);
3530
3531                                 $player = format_inline_player($link, $url, $ctype);
3532
3533                                 if ($player) array_push($entries_inline, $player);
3534
3535 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3536 #                                       $filename . " (" . $ctype . ")" . "</a>";
3537
3538                                 $entry = "<div onclick=\"window.open('".htmlspecialchars($url)."')\"
3539                                         dojoType=\"dijit.MenuItem\">$filename ($ctype)</div>";
3540
3541                                 array_push($entries_html, $entry);
3542
3543                                 $entry = array();
3544
3545                                 $entry["type"] = $ctype;
3546                                 $entry["filename"] = $filename;
3547                                 $entry["url"] = $url;
3548
3549                                 array_push($entries, $entry);
3550                         }
3551
3552                         if (!get_pref($link, "STRIP_IMAGES")) {
3553                                 if ($always_display_enclosures ||
3554                                                         !preg_match("/<img/i", $article_content)) {
3555
3556                                         foreach ($entries as $entry) {
3557
3558                                                 if (preg_match("/image/", $entry["type"]) ||
3559                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
3560
3561                                                                 $rv .= "<p><img
3562                                                                 alt=\"".htmlspecialchars($entry["filename"])."\"
3563                                                                 src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
3564
3565                                                 }
3566                                         }
3567                                 }
3568                         }
3569
3570                         if (count($entries_inline) > 0) {
3571                                 $rv .= "<hr clear='both'/>";
3572                                 foreach ($entries_inline as $entry) { $rv .= $entry; };
3573                                 $rv .= "<hr clear='both'/>";
3574                         }
3575
3576                         $rv .= "<br/><div dojoType=\"dijit.form.DropDownButton\">".
3577                                 "<span>" . __('Attachments')."</span>";
3578                         $rv .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3579
3580                         foreach ($entries_html as $entry) { $rv .= $entry; };
3581
3582                         $rv .= "</div></div>";
3583                 }
3584
3585                 return $rv;
3586         }
3587
3588         function getLastArticleId($link) {
3589                 $result = db_query($link, "SELECT MAX(ref_id) AS id FROM ttrss_user_entries
3590                         WHERE owner_uid = " . $_SESSION["uid"]);
3591
3592                 if (db_num_rows($result) == 1) {
3593                         return db_fetch_result($result, 0, "id");
3594                 } else {
3595                         return -1;
3596                 }
3597         }
3598
3599         function build_url($parts) {
3600                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
3601         }
3602
3603         /**
3604          * Converts a (possibly) relative URL to a absolute one.
3605          *
3606          * @param string $url     Base URL (i.e. from where the document is)
3607          * @param string $rel_url Possibly relative URL in the document
3608          *
3609          * @return string Absolute URL
3610          */
3611         function rewrite_relative_url($url, $rel_url) {
3612                 if (strpos($rel_url, "magnet:") === 0) {
3613                         return $rel_url;
3614                 } else if (strpos($rel_url, "://") !== false) {
3615                         return $rel_url;
3616                 } else if (strpos($rel_url, "//") === 0) {
3617                         # protocol-relative URL (rare but they exist)
3618                         return $rel_url;
3619                 } else if (strpos($rel_url, "/") === 0)
3620                 {
3621                         $parts = parse_url($url);
3622                         $parts['path'] = $rel_url;
3623
3624                         return build_url($parts);
3625
3626                 } else {
3627                         $parts = parse_url($url);
3628                         if (!isset($parts['path'])) {
3629                                 $parts['path'] = '/';
3630                         }
3631                         $dir = $parts['path'];
3632                         if (substr($dir, -1) !== '/') {
3633                                 $dir = dirname($parts['path']);
3634                                 $dir !== '/' && $dir .= '/';
3635                         }
3636                         $parts['path'] = $dir . $rel_url;
3637
3638                         return build_url($parts);
3639                 }
3640         }
3641
3642         function sphinx_search($query, $offset = 0, $limit = 30) {
3643                 require_once 'lib/sphinxapi.php';
3644
3645                 $sphinxClient = new SphinxClient();
3646
3647                 $sphinxClient->SetServer('localhost', 9312);
3648                 $sphinxClient->SetConnectTimeout(1);
3649
3650                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
3651                         'feed_title' => 20));
3652
3653                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
3654                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
3655                 $sphinxClient->SetLimits($offset, $limit, 1000);
3656                 $sphinxClient->SetArrayResult(false);
3657                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
3658
3659                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
3660
3661                 $ids = array();
3662
3663                 if (is_array($result['matches'])) {
3664                         foreach (array_keys($result['matches']) as $int_id) {
3665                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
3666                                 array_push($ids, $ref_id);
3667                         }
3668                 }
3669
3670                 return $ids;
3671         }
3672
3673         function cleanup_tags($link, $days = 14, $limit = 1000) {
3674
3675                 if (DB_TYPE == "pgsql") {
3676                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
3677                 } else if (DB_TYPE == "mysql") {
3678                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
3679                 }
3680
3681                 $tags_deleted = 0;
3682
3683                 while ($limit > 0) {
3684                         $limit_part = 500;
3685
3686                         $query = "SELECT ttrss_tags.id AS id
3687                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
3688                                 WHERE post_int_id = int_id AND $interval_query AND
3689                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
3690
3691                         $result = db_query($link, $query);
3692
3693                         $ids = array();
3694
3695                         while ($line = db_fetch_assoc($result)) {
3696                                 array_push($ids, $line['id']);
3697                         }
3698
3699                         if (count($ids) > 0) {
3700                                 $ids = join(",", $ids);
3701                                 print ".";
3702
3703                                 $tmp_result = db_query($link, "DELETE FROM ttrss_tags WHERE id IN ($ids)");
3704                                 $tags_deleted += db_affected_rows($link, $tmp_result);
3705                         } else {
3706                                 break;
3707                         }
3708
3709                         $limit -= $limit_part;
3710                 }
3711
3712                 print "\n";
3713
3714                 return $tags_deleted;
3715         }
3716
3717         function print_user_stylesheet($link) {
3718                 $value = get_pref($link, 'USER_STYLESHEET');
3719
3720                 if ($value) {
3721                         print "<style type=\"text/css\">";
3722                         print str_replace("<br/>", "\n", $value);
3723                         print "</style>";
3724                 }
3725
3726         }
3727
3728         function rewrite_urls($html) {
3729                 libxml_use_internal_errors(true);
3730
3731                 $charset_hack = '<head>
3732                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
3733                 </head>';
3734
3735                 $doc = new DOMDocument();
3736                 $doc->loadHTML($charset_hack . $html);
3737                 $xpath = new DOMXPath($doc);
3738
3739                 $entries = $xpath->query('//*/text()');
3740
3741                 foreach ($entries as $entry) {
3742                         if (strstr($entry->wholeText, "://") !== false) {
3743                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
3744                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
3745
3746                                 if ($text != $entry->wholeText) {
3747                                         $cdoc = new DOMDocument();
3748                                         $cdoc->loadHTML($charset_hack . $text);
3749
3750
3751                                         foreach ($cdoc->childNodes as $cnode) {
3752                                                 $cnode = $doc->importNode($cnode, true);
3753
3754                                                 if ($cnode) {
3755                                                         $entry->parentNode->insertBefore($cnode);
3756                                                 }
3757                                         }
3758
3759                                         $entry->parentNode->removeChild($entry);
3760
3761                                 }
3762                         }
3763                 }
3764
3765                 $node = $doc->getElementsByTagName('body')->item(0);
3766
3767                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
3768                 if ($node)
3769                         return $doc->saveXML($node);
3770                 else
3771                         return $html;
3772         }
3773
3774         function filter_to_sql($link, $filter, $owner_uid) {
3775                 $query = array();
3776
3777                 if (DB_TYPE == "pgsql")
3778                         $reg_qpart = "~";
3779                 else
3780                         $reg_qpart = "REGEXP";
3781
3782                 foreach ($filter["rules"] AS $rule) {
3783                         $regexp_valid = preg_match('/' . $rule['reg_exp'] . '/',
3784                                 $rule['reg_exp']) !== FALSE;
3785
3786                         if ($regexp_valid) {
3787
3788                                 $rule['reg_exp'] = db_escape_string($rule['reg_exp']);
3789
3790                                 switch ($rule["type"]) {
3791                                         case "title":
3792                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3793                                                         $rule['reg_exp'] . "')";
3794                                                 break;
3795                                         case "content":
3796                                                 $qpart = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
3797                                                         $rule['reg_exp'] . "')";
3798                                                 break;
3799                                         case "both":
3800                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3801                                                         $rule['reg_exp'] . "') OR LOWER(" .
3802                                                         "ttrss_entries.content) $reg_qpart LOWER('" . $rule['reg_exp'] . "')";
3803                                                 break;
3804                                         case "tag":
3805                                                 $qpart = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
3806                                                         $rule['reg_exp'] . "')";
3807                                                 break;
3808                                         case "link":
3809                                                 $qpart = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
3810                                                         $rule['reg_exp'] . "')";
3811                                                 break;
3812                                         case "author":
3813                                                 $qpart = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
3814                                                         $rule['reg_exp'] . "')";
3815                                                 break;
3816                                 }
3817
3818                                 if (isset($rule["feed_id"]) && $rule["feed_id"] > 0) {
3819                                         $qpart .= " AND feed_id = " . db_escape_string($rule["feed_id"]);
3820                                 }
3821
3822                                 if (isset($rule["cat_id"])) {
3823
3824                                         if ($rule["cat_id"] > 0) {
3825                                                 $children = getChildCategories($link, $rule["cat_id"], $owner_uid);
3826                                                 array_push($children, $rule["cat_id"]);
3827
3828                                                 $children = join(",", $children);
3829
3830                                                 $cat_qpart = "cat_id IN ($children)";
3831                                         } else {
3832                                                 $cat_qpart = "cat_id IS NULL";
3833                                         }
3834
3835                                         $qpart .= " AND $cat_qpart";
3836                                 }
3837
3838                                 array_push($query, "($qpart)");
3839
3840                         }
3841                 }
3842
3843                 if (count($query) > 0) {
3844                         return "(" . join($filter["match_any_rule"] ? "OR" : "AND", $query) . ")";
3845                 } else {
3846                         return "(false)";
3847                 }
3848         }
3849
3850         if (!function_exists('gzdecode')) {
3851                 function gzdecode($string) { // no support for 2nd argument
3852                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
3853                                 base64_encode($string));
3854                 }
3855         }
3856
3857         function get_random_bytes($length) {
3858                 if (function_exists('openssl_random_pseudo_bytes')) {
3859                         return openssl_random_pseudo_bytes($length);
3860                 } else {
3861                         $output = "";
3862
3863                         for ($i = 0; $i < $length; $i++)
3864                                 $output .= chr(mt_rand(0, 255));
3865
3866                         return $output;
3867                 }
3868         }
3869
3870         function read_stdin() {
3871                 $fp = fopen("php://stdin", "r");
3872
3873                 if ($fp) {
3874                         $line = trim(fgets($fp));
3875                         fclose($fp);
3876                         return $line;
3877                 }
3878
3879                 return null;
3880         }
3881
3882         function tmpdirname($path, $prefix) {
3883                 // Use PHP's tmpfile function to create a temporary
3884                 // directory name. Delete the file and keep the name.
3885                 $tempname = tempnam($path,$prefix);
3886                 if (!$tempname)
3887                         return false;
3888
3889                 if (!unlink($tempname))
3890                         return false;
3891
3892        return $tempname;
3893         }
3894
3895         function getFeedCategory($link, $feed) {
3896                 $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
3897                         WHERE id = '$feed'");
3898
3899                 if (db_num_rows($result) > 0) {
3900                         return db_fetch_result($result, 0, "cat_id");
3901                 } else {
3902                         return false;
3903                 }
3904
3905         }
3906
3907         function implements_interface($class, $interface) {
3908                 return in_array($interface, class_implements($class));
3909         }
3910
3911         function geturl($url){
3912
3913                 (function_exists('curl_init')) ? '' : die('cURL Must be installed for geturl function to work. Ask your host to enable it or uncomment extension=php_curl.dll in php.ini');
3914
3915                 $curl = curl_init();
3916                 $header[0] = "Accept: text/xml,application/xml,application/xhtml+xml,";
3917                 $header[0] .= "text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5";
3918                 $header[] = "Cache-Control: max-age=0";
3919                 $header[] = "Connection: keep-alive";
3920                 $header[] = "Keep-Alive: 300";
3921                 $header[] = "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7";
3922                 $header[] = "Accept-Language: en-us,en;q=0.5";
3923                 $header[] = "Pragma: ";
3924
3925                 curl_setopt($curl, CURLOPT_URL, $url);
3926                 curl_setopt($curl, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20100101 Firefox/5.0 Firefox/5.0');
3927                 curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
3928                 curl_setopt($curl, CURLOPT_HEADER, true);
3929                 curl_setopt($curl, CURLOPT_REFERER, $url);
3930                 curl_setopt($curl, CURLOPT_ENCODING, 'gzip,deflate');
3931                 curl_setopt($curl, CURLOPT_AUTOREFERER, true);
3932                 curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
3933                 //curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); //CURLOPT_FOLLOWLOCATION Disabled...
3934                 curl_setopt($curl, CURLOPT_TIMEOUT, 60);
3935
3936                 $html = curl_exec($curl);
3937
3938                 $status = curl_getinfo($curl);
3939                 curl_close($curl);
3940
3941                 if($status['http_code']!=200){
3942                         if($status['http_code'] == 301 || $status['http_code'] == 302) {
3943                                 list($header) = explode("\r\n\r\n", $html, 2);
3944                                 $matches = array();
3945                                 preg_match("/(Location:|URI:)[^(\n)]*/", $header, $matches);
3946                                 $url = trim(str_replace($matches[1],"",$matches[0]));
3947                                 $url_parsed = parse_url($url);
3948                                 return (isset($url_parsed))? geturl($url, $referer):'';
3949                         }
3950                         $oline='';
3951                         foreach($status as $key=>$eline){$oline.='['.$key.']'.$eline.' ';}
3952                         $line =$oline." \r\n ".$url."\r\n-----------------\r\n";
3953                         $handle = @fopen('./curl.error.log', 'a');
3954                         fwrite($handle, $line);
3955                         return FALSE;
3956                 }
3957                 return $url;
3958         }
3959
3960         function get_minified_js($files) {
3961                 require_once 'lib/jshrink/Minifier.php';
3962
3963                 $rv = '';
3964
3965                 foreach ($files as $js) {
3966                         if (!isset($_GET['debug'])) {
3967                                 $cached_file = CACHE_DIR . "/js/$js.js";
3968
3969                                 if (file_exists($cached_file) &&
3970                                                 is_readable($cached_file) &&
3971                                                 filemtime($cached_file) >= filemtime("js/$js.js")) {
3972
3973                                         $rv .= file_get_contents($cached_file);
3974
3975                                 } else {
3976                                         $minified = JShrink\Minifier::minify(file_get_contents("js/$js.js"));
3977                                         file_put_contents($cached_file, $minified);
3978                                         $rv .= $minified;
3979                                 }
3980                         } else {
3981                                 $rv .= file_get_contents("js/$js.js");
3982                         }
3983                 }
3984
3985                 return $rv;
3986         }
3987
3988 ?>