include/functions.php

   1 <?php
   2         define('EXPECTED_CONFIG_VERSION', 26);
   3         define('SCHEMA_VERSION', 105);
   4
   5         $fetch_last_error = false;
   6         $pluginhost = false;
   7
   8         function __autoload($class) {
   9                 $class_file = str_replace("_", "/", strtolower(basename($class)));
  10
  11                 $file = dirname(__FILE__)."/../classes/$class_file.php";
  12
  13                 if (file_exists($file)) {
  14                         require $file;
  15                 }
  16
  17         }
  18
  19         mb_internal_encoding("UTF-8");
  20         date_default_timezone_set('UTC');
  21         if (defined('E_DEPRECATED')) {
  22                 error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
  23         } else {
  24                 error_reporting(E_ALL & ~E_NOTICE);
  25         }
  26
  27         require_once 'config.php';
  28
  29         if (DB_TYPE == "pgsql") {
  30                 define('SUBSTRING_FOR_DATE', 'SUBSTRING_FOR_DATE');
  31         } else {
  32                 define('SUBSTRING_FOR_DATE', 'SUBSTRING');
  33         }
  34
  35         define('THEME_VERSION_REQUIRED', 1.1);
  36
  37         /**
  38          * Return available translations names.
  39          *
  40          * @access public
  41          * @return array A array of available translations.
  42          */
  43         function get_translations() {
  44                 $tr = array(
  45                                         "auto"  => "Detect automatically",
  46                                         "ca_CA" => "Català",
  47                                         "en_US" => "English",
  48                                         "es_ES" => "Español",
  49                                         "de_DE" => "Deutsch",
  50                                         "fr_FR" => "Français",
  51                                         "hu_HU" => "Magyar (Hungarian)",
  52                                         "it_IT" => "Italiano",
  53                                         "ja_JP" => "日本語 (Japanese)",
  54                                         "lv_LV" => "Latviešu",
  55                                         "nb_NO" => "Norwegian bokmål",
  56                                         "pl_PL" => "Polski",
  57                                         "ru_RU" => "Русский",
  58                                         "pt_BR" => "Portuguese/Brazil",
  59                                         "zh_CN" => "Simplified Chinese");
  60
  61                 return $tr;
  62         }
  63
  64         require_once "lib/accept-to-gettext.php";
  65         require_once "lib/gettext/gettext.inc";
  66
  67
  68         function startup_gettext() {
  69
  70                 # Get locale from Accept-Language header
  71                 $lang = al2gt(array_keys(get_translations()), "text/html");
  72
  73                 if (defined('_TRANSLATION_OVERRIDE_DEFAULT')) {
  74                         $lang = _TRANSLATION_OVERRIDE_DEFAULT;
  75                 }
  76
  77                 /* In login action of mobile version */
  78                 if ($_POST["language"] && defined('MOBILE_VERSION')) {
  79                         $lang = $_POST["language"];
  80                 } else if ($_SESSION["language"] && $_SESSION["language"] != "auto") {
  81                         $lang = $_SESSION["language"];
  82                 }
  83
  84                 if ($lang) {
  85                         if (defined('LC_MESSAGES')) {
  86                                 _setlocale(LC_MESSAGES, $lang);
  87                         } else if (defined('LC_ALL')) {
  88                                 _setlocale(LC_ALL, $lang);
  89                         }
  90
  91                         if (defined('MOBILE_VERSION')) {
  92                                 _bindtextdomain("messages", "../locale");
  93                         } else {
  94                                 _bindtextdomain("messages", "locale");
  95                         }
  96
  97                         _textdomain("messages");
  98                         _bind_textdomain_codeset("messages", "UTF-8");
  99                 }
 100         }
 101
 102         startup_gettext();
 103
 104         require_once 'db-prefs.php';
 105         require_once 'version.php';
 106         require_once 'ccache.php';
 107         require_once 'labels.php';
 108
 109         define('SELF_USER_AGENT', 'Tiny Tiny RSS/' . VERSION . ' (http://tt-rss.org/)');
 110         ini_set('user_agent', SELF_USER_AGENT);
 111
 112         require_once 'lib/pubsubhubbub/publisher.php';
 113         require_once 'lib/htmLawed.php';
 114
 115         $tz_offset = -1;
 116         $utc_tz = new DateTimeZone('UTC');
 117         $schema_version = false;
 118
 119         /**
 120          * Print a timestamped debug message.
 121          *
 122          * @param string $msg The debug message.
 123          * @return void
 124          */
 125         function _debug($msg) {
 126                 if (defined('QUIET') && QUIET) {
 127                         return;
 128                 }
 129                 $ts = strftime("%H:%M:%S", time());
 130                 if (function_exists('posix_getpid')) {
 131                         $ts = "$ts/" . posix_getpid();
 132                 }
 133                 print "[$ts] $msg\n";
 134         } // function _debug
 135
 136         /**
 137          * Purge a feed old posts.
 138          *
 139          * @param mixed $link A database connection.
 140          * @param mixed $feed_id The id of the purged feed.
 141          * @param mixed $purge_interval Olderness of purged posts.
 142          * @param boolean $debug Set to True to enable the debug. False by default.
 143          * @access public
 144          * @return void
 145          */
 146         function purge_feed($link, $feed_id, $purge_interval, $debug = false) {
 147
 148                 if (!$purge_interval) $purge_interval = feed_purge_interval($link, $feed_id);
 149
 150                 $rows = -1;
 151
 152                 $result = db_query($link,
 153                         "SELECT owner_uid FROM ttrss_feeds WHERE id = '$feed_id'");
 154
 155                 $owner_uid = false;
 156
 157                 if (db_num_rows($result) == 1) {
 158                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 159                 }
 160
 161                 if ($purge_interval == -1 || !$purge_interval) {
 162                         if ($owner_uid) {
 163                                 ccache_update($link, $feed_id, $owner_uid);
 164                         }
 165                         return;
 166                 }
 167
 168                 if (!$owner_uid) return;
 169
 170                 if (FORCE_ARTICLE_PURGE == 0) {
 171                         $purge_unread = get_pref($link, "PURGE_UNREAD_ARTICLES",
 172                                 $owner_uid, false);
 173                 } else {
 174                         $purge_unread = true;
 175                         $purge_interval = FORCE_ARTICLE_PURGE;
 176                 }
 177
 178                 if (!$purge_unread) $query_limit = " unread = false AND ";
 179
 180                 if (DB_TYPE == "pgsql") {
 181                         $pg_version = get_pgsql_version($link);
 182
 183                         if (preg_match("/^7\./", $pg_version) || preg_match("/^8\.0/", $pg_version)) {
 184
 185                                 $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 186                                         ttrss_entries.id = ref_id AND
 187                                         marked = false AND
 188                                         feed_id = '$feed_id' AND
 189                                         $query_limit
 190                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 191
 192                         } else {
 193
 194                                 $result = db_query($link, "DELETE FROM ttrss_user_entries
 195                                         USING ttrss_entries
 196                                         WHERE ttrss_entries.id = ref_id AND
 197                                         marked = false AND
 198                                         feed_id = '$feed_id' AND
 199                                         $query_limit
 200                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 201                         }
 202
 203                         $rows = pg_affected_rows($result);
 204
 205                 } else {
 206
 207 /*                      $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 208                                 marked = false AND feed_id = '$feed_id' AND
 209                                 (SELECT date_updated FROM ttrss_entries WHERE
 210                                         id = ref_id) < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)"); */
 211
 212                         $result = db_query($link, "DELETE FROM ttrss_user_entries
 213                                 USING ttrss_user_entries, ttrss_entries
 214                                 WHERE ttrss_entries.id = ref_id AND
 215                                 marked = false AND
 216                                 feed_id = '$feed_id' AND
 217                                 $query_limit
 218                                 ttrss_entries.date_updated < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)");
 219
 220                         $rows = mysql_affected_rows($link);
 221
 222                 }
 223
 224                 ccache_update($link, $feed_id, $owner_uid);
 225
 226                 if ($debug) {
 227                         _debug("Purged feed $feed_id ($purge_interval): deleted $rows articles");
 228                 }
 229
 230                 return $rows;
 231         } // function purge_feed
 232
 233         function feed_purge_interval($link, $feed_id) {
 234
 235                 $result = db_query($link, "SELECT purge_interval, owner_uid FROM ttrss_feeds
 236                         WHERE id = '$feed_id'");
 237
 238                 if (db_num_rows($result) == 1) {
 239                         $purge_interval = db_fetch_result($result, 0, "purge_interval");
 240                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 241
 242                         if ($purge_interval == 0) $purge_interval = get_pref($link,
 243                                 'PURGE_OLD_DAYS', $owner_uid);
 244
 245                         return $purge_interval;
 246
 247                 } else {
 248                         return -1;
 249                 }
 250         }
 251
 252         function purge_orphans($link, $do_output = false) {
 253
 254                 // purge orphaned posts in main content table
 255                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
 256                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
 257
 258                 if ($do_output) {
 259                         $rows = db_affected_rows($link, $result);
 260                         _debug("Purged $rows orphaned posts.");
 261                 }
 262         }
 263
 264         function get_feed_update_interval($link, $feed_id) {
 265                 $result = db_query($link, "SELECT owner_uid, update_interval FROM
 266                         ttrss_feeds WHERE id = '$feed_id'");
 267
 268                 if (db_num_rows($result) == 1) {
 269                         $update_interval = db_fetch_result($result, 0, "update_interval");
 270                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 271
 272                         if ($update_interval != 0) {
 273                                 return $update_interval;
 274                         } else {
 275                                 return get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $owner_uid, false);
 276                         }
 277
 278                 } else {
 279                         return -1;
 280                 }
 281         }
 282
 283         function fetch_file_contents($url, $type = false, $login = false, $pass = false, $post_query = false, $timeout = false) {
 284                 $login = urlencode($login);
 285                 $pass = urlencode($pass);
 286
 287                 global $fetch_last_error;
 288
 289                 if (function_exists('curl_init') && !ini_get("open_basedir")) {
 290                         //$ch = curl_init($url);
 291                         $ch = curl_init(geturl($url));
 292
 293                         curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout ? $timeout : 15);
 294                         curl_setopt($ch, CURLOPT_TIMEOUT, $timeout ? $timeout : 45);
 295                         //curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
 296                         curl_setopt($ch, CURLOPT_MAXREDIRS, 20);
 297                         curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
 298                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 299                         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 300                         curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 301                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 302                         curl_setopt($ch, CURLOPT_ENCODING , "gzip");
 303                         curl_setopt($ch, CURLOPT_REFERER, $url);
 304
 305                         if ($post_query) {
 306                                 curl_setopt($ch, CURLOPT_POST, true);
 307                                 curl_setopt($ch, CURLOPT_POSTFIELDS, $post_query);
 308                         }
 309
 310                         if ($login && $pass)
 311                                 curl_setopt($ch, CURLOPT_USERPWD, "$login:$pass");
 312
 313                         $contents = @curl_exec($ch);
 314
 315                         if (curl_errno($ch) === 23 || curl_errno($ch) === 61) {
 316                                 curl_setopt($ch, CURLOPT_ENCODING, 'none');
 317                                 $contents = @curl_exec($ch);
 318                         }
 319
 320                         if ($contents === false) {
 321                                 $fetch_last_error = curl_errno($ch) . " " . curl_error($ch);
 322                                 curl_close($ch);
 323                                 return false;
 324                         }
 325
 326                         $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 327                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 328
 329                         if ($http_code != 200 || $type && strpos($content_type, "$type") === false) {
 330                                 if (curl_errno($ch) != 0) {
 331                                         $fetch_last_error = curl_errno($ch) . " " . curl_error($ch);
 332                                 } else {
 333                                         $fetch_last_error = "HTTP Code: $http_code";
 334                                 }
 335                                 curl_close($ch);
 336                                 return false;
 337                         }
 338
 339                         curl_close($ch);
 340
 341                         return $contents;
 342                 } else {
 343                         if ($login && $pass ){
 344                                 $url_parts = array();
 345
 346                                 preg_match("/(^[^:]*):\/\/(.*)/", $url, $url_parts);
 347
 348                                 if ($url_parts[1] && $url_parts[2]) {
 349                                         $url = $url_parts[1] . "://$login:$pass@" . $url_parts[2];
 350                                 }
 351                         }
 352
 353                         $data = @file_get_contents($url);
 354
 355                         $gzdecoded = gzdecode($data);
 356                         if ($gzdecoded) $data = $gzdecoded;
 357
 358                         if (!$data && function_exists('error_get_last')) {
 359                                 $error = error_get_last();
 360                                 $fetch_last_error = $error["message"];
 361                         }
 362                         return $data;
 363                 }
 364
 365         }
 366
 367         /**
 368          * Try to determine the favicon URL for a feed.
 369          * adapted from wordpress favicon plugin by Jeff Minard (http://thecodepro.com/)
 370          * http://dev.wp-plugins.org/file/favatars/trunk/favatars.php
 371          *
 372          * @param string $url A feed or page URL
 373          * @access public
 374          * @return mixed The favicon URL, or false if none was found.
 375          */
 376         function get_favicon_url($url) {
 377
 378                 $favicon_url = false;
 379
 380                 if ($html = @fetch_file_contents($url)) {
 381
 382                         libxml_use_internal_errors(true);
 383
 384                         $doc = new DOMDocument();
 385                         $doc->loadHTML($html);
 386                         $xpath = new DOMXPath($doc);
 387
 388                         $base = $xpath->query('/html/head/base');
 389                         foreach ($base as $b) {
 390                                 $url = $b->getAttribute("href");
 391                                 break;
 392                         }
 393
 394                         $entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon"]');
 395                         if (count($entries) > 0) {
 396                                 foreach ($entries as $entry) {
 397                                         $favicon_url = rewrite_relative_url($url, $entry->getAttribute("href"));
 398                                         break;
 399                                 }
 400                         }
 401                 }
 402
 403                 if (!$favicon_url)
 404                         $favicon_url = rewrite_relative_url($url, "/favicon.ico");
 405
 406                 return $favicon_url;
 407         } // function get_favicon_url
 408
 409         function check_feed_favicon($site_url, $feed, $link) {
 410 #               print "FAVICON [$site_url]: $favicon_url\n";
 411
 412                 $icon_file = ICONS_DIR . "/$feed.ico";
 413
 414                 if (!file_exists($icon_file)) {
 415                         $favicon_url = get_favicon_url($site_url);
 416
 417                         if ($favicon_url) {
 418                                 // Limiting to "image" type misses those served with text/plain
 419                                 $contents = fetch_file_contents($favicon_url); // , "image");
 420
 421                                 if ($contents) {
 422                                         // Crude image type matching.
 423                                         // Patterns gleaned from the file(1) source code.
 424                                         if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
 425                                                 // 0       string  \000\000\001\000        MS Windows icon resource
 426                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
 427                                         }
 428                                         elseif (preg_match('/^GIF8/', $contents)) {
 429                                                 // 0       string          GIF8            GIF image data
 430                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
 431                                         }
 432                                         elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
 433                                                 // 0       string          \x89PNG\x0d\x0a\x1a\x0a         PNG image data
 434                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
 435                                         }
 436                                         elseif (preg_match('/^\xff\xd8/', $contents)) {
 437                                                 // 0       beshort         0xffd8          JPEG image data
 438                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
 439                                         }
 440                                         else {
 441                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
 442                                                 $contents = "";
 443                                         }
 444                                 }
 445
 446                                 if ($contents) {
 447                                         $fp = @fopen($icon_file, "w");
 448
 449                                         if ($fp) {
 450                                                 fwrite($fp, $contents);
 451                                                 fclose($fp);
 452                                                 chmod($icon_file, 0644);
 453                                         }
 454                                 }
 455                         }
 456                 }
 457         }
 458
 459         function print_select($id, $default, $values, $attributes = "") {
 460                 print "<select name=\"$id\" id=\"$id\" $attributes>";
 461                 foreach ($values as $v) {
 462                         if ($v == $default)
 463                                 $sel = "selected=\"1\"";
 464                          else
 465                                 $sel = "";
 466
 467                         $v = trim($v);
 468
 469                         print "<option value=\"$v\" $sel>$v</option>";
 470                 }
 471                 print "</select>";
 472         }
 473
 474         function print_select_hash($id, $default, $values, $attributes = "") {
 475                 print "<select name=\"$id\" id='$id' $attributes>";
 476                 foreach (array_keys($values) as $v) {
 477                         if ($v == $default)
 478                                 $sel = 'selected="selected"';
 479                          else
 480                                 $sel = "";
 481
 482                         $v = trim($v);
 483
 484                         print "<option $sel value=\"$v\">".$values[$v]."</option>";
 485                 }
 486
 487                 print "</select>";
 488         }
 489
 490         function print_radio($id, $default, $true_is, $values, $attributes = "") {
 491                 foreach ($values as $v) {
 492
 493                         if ($v == $default)
 494                                 $sel = "checked";
 495                          else
 496                                 $sel = "";
 497
 498                         if ($v == $true_is) {
 499                                 $sel .= " value=\"1\"";
 500                         } else {
 501                                 $sel .= " value=\"0\"";
 502                         }
 503
 504                         print "<input class=\"noborder\" dojoType=\"dijit.form.RadioButton\"
 505                                 type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 506
 507                 }
 508         }
 509
 510         function initialize_user_prefs($link, $uid, $profile = false) {
 511
 512                 $uid = db_escape_string($uid);
 513
 514                 if (!$profile) {
 515                         $profile = "NULL";
 516                         $profile_qpart = "AND profile IS NULL";
 517                 } else {
 518                         $profile_qpart = "AND profile = '$profile'";
 519                 }
 520
 521                 if (get_schema_version($link) < 63) $profile_qpart = "";
 522
 523                 db_query($link, "BEGIN");
 524
 525                 $result = db_query($link, "SELECT pref_name,def_value FROM ttrss_prefs");
 526
 527                 $u_result = db_query($link, "SELECT pref_name
 528                         FROM ttrss_user_prefs WHERE owner_uid = '$uid' $profile_qpart");
 529
 530                 $active_prefs = array();
 531
 532                 while ($line = db_fetch_assoc($u_result)) {
 533                         array_push($active_prefs, $line["pref_name"]);
 534                 }
 535
 536                 while ($line = db_fetch_assoc($result)) {
 537                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 538 //                              print "adding " . $line["pref_name"] . "<br>";
 539
 540                                 if (get_schema_version($link) < 63) {
 541                                         db_query($link, "INSERT INTO ttrss_user_prefs
 542                                                 (owner_uid,pref_name,value) VALUES
 543                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 544
 545                                 } else {
 546                                         db_query($link, "INSERT INTO ttrss_user_prefs
 547                                                 (owner_uid,pref_name,value, profile) VALUES
 548                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."', $profile)");
 549                                 }
 550
 551                         }
 552                 }
 553
 554                 db_query($link, "COMMIT");
 555
 556         }
 557
 558         function get_ssl_certificate_id() {
 559                 if ($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"]) {
 560                         return sha1($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"] .
 561                                 $_SERVER["REDIRECT_SSL_CLIENT_V_START"] .
 562                                 $_SERVER["REDIRECT_SSL_CLIENT_V_END"] .
 563                                 $_SERVER["REDIRECT_SSL_CLIENT_S_DN"]);
 564                 }
 565                 return "";
 566         }
 567
 568         function authenticate_user($link, $login, $password, $check_only = false) {
 569
 570                 if (!SINGLE_USER_MODE) {
 571
 572                         $user_id = false;
 573
 574                         global $pluginhost;
 575                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_AUTH_USER) as $plugin) {
 576
 577                                 $user_id = (int) $plugin->authenticate($login, $password);
 578
 579                                 if ($user_id) {
 580                                         $_SESSION["auth_module"] = strtolower(get_class($plugin));
 581                                         break;
 582                                 }
 583                         }
 584
 585                         if ($user_id && !$check_only) {
 586                                 $_SESSION["uid"] = $user_id;
 587
 588                                 $result = db_query($link, "SELECT login,access_level,pwd_hash FROM ttrss_users
 589                                         WHERE id = '$user_id'");
 590
 591                                 $_SESSION["name"] = db_fetch_result($result, 0, "login");
 592                                 $_SESSION["access_level"] = db_fetch_result($result, 0, "access_level");
 593                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 594
 595                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 596                                         $_SESSION["uid"]);
 597
 598                                 $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 599                                 $_SESSION["pwd_hash"] = db_fetch_result($result, 0, "pwd_hash");
 600
 601                                 $_SESSION["last_version_check"] = time();
 602
 603                                 initialize_user_prefs($link, $_SESSION["uid"]);
 604
 605                                 return true;
 606                         }
 607
 608                         return false;
 609
 610                 } else {
 611
 612                         $_SESSION["uid"] = 1;
 613                         $_SESSION["name"] = "admin";
 614                         $_SESSION["access_level"] = 10;
 615
 616                         $_SESSION["hide_hello"] = true;
 617                         $_SESSION["hide_logout"] = true;
 618
 619                         $_SESSION["auth_module"] = false;
 620
 621                         if (!$_SESSION["csrf_token"]) {
 622                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 623                         }
 624
 625                         $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 626
 627                         initialize_user_prefs($link, $_SESSION["uid"]);
 628
 629                         return true;
 630                 }
 631         }
 632
 633         function make_password($length = 8) {
 634
 635                 $password = "";
 636                 $possible = "0123456789abcdfghjkmnpqrstvwxyzABCDFGHJKMNPQRSTVWXYZ";
 637
 638         $i = 0;
 639
 640                 while ($i < $length) {
 641                         $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 642
 643                         if (!strstr($password, $char)) {
 644                                 $password .= $char;
 645                                 $i++;
 646                         }
 647                 }
 648                 return $password;
 649         }
 650
 651         // this is called after user is created to initialize default feeds, labels
 652         // or whatever else
 653
 654         // user preferences are checked on every login, not here
 655
 656         function initialize_user($link, $uid) {
 657
 658                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 659                         values ('$uid', 'Tiny Tiny RSS: New Releases',
 660                         'http://tt-rss.org/releases.rss')");
 661
 662                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 663                         values ('$uid', 'Tiny Tiny RSS: Forum',
 664                                 'http://tt-rss.org/forum/rss.php')");
 665         }
 666
 667         function logout_user() {
 668                 session_destroy();
 669                 if (isset($_COOKIE[session_name()])) {
 670                    setcookie(session_name(), '', time()-42000, '/');
 671                 }
 672         }
 673
 674         function validate_csrf($csrf_token) {
 675                 return $csrf_token == $_SESSION['csrf_token'];
 676         }
 677
 678         function validate_session($link) {
 679                 if (SINGLE_USER_MODE) return true;
 680
 681                 $check_ip = $_SESSION['ip_address'];
 682
 683                 switch (SESSION_CHECK_ADDRESS) {
 684                 case 0:
 685                         $check_ip = '';
 686                         break;
 687                 case 1:
 688                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 689                         break;
 690                 case 2:
 691                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.'));
 692                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 693                         break;
 694                 };
 695
 696                 if ($check_ip && strpos($_SERVER['REMOTE_ADDR'], $check_ip) !== 0) {
 697                         $_SESSION["login_error_msg"] =
 698                                 __("Session failed to validate (incorrect IP)");
 699                         return false;
 700                 }
 701
 702                 if ($_SESSION["ref_schema_version"] != get_schema_version($link, true))
 703                         return false;
 704
 705                 if ($_SESSION["uid"]) {
 706
 707                         $result = db_query($link,
 708                                 "SELECT pwd_hash FROM ttrss_users WHERE id = '".$_SESSION["uid"]."'");
 709
 710                         $pwd_hash = db_fetch_result($result, 0, "pwd_hash");
 711
 712                         if ($pwd_hash != $_SESSION["pwd_hash"]) {
 713                                 return false;
 714                         }
 715                 }
 716
 717 /*              if ($_SESSION["cookie_lifetime"] && $_SESSION["uid"]) {
 718
 719                         //print_r($_SESSION);
 720
 721                         if (time() > $_SESSION["cookie_lifetime"]) {
 722                                 return false;
 723                         }
 724                 } */
 725
 726                 return true;
 727         }
 728
 729         function load_user_plugins($link, $owner_uid) {
 730                 if ($owner_uid) {
 731                         $plugins = get_pref($link, "_ENABLED_PLUGINS", $owner_uid);
 732
 733                         global $pluginhost;
 734                         $pluginhost->load($plugins, $pluginhost::KIND_USER, $owner_uid);
 735
 736                         if (get_schema_version($link) > 100) {
 737                                 $pluginhost->load_data();
 738                         }
 739                 }
 740         }
 741
 742         function login_sequence($link, $login_form = 0) {
 743                 $_SESSION["prefs_cache"] = false;
 744
 745                 if (SINGLE_USER_MODE) {
 746                         authenticate_user($link, "admin", null);
 747                         cache_prefs($link);
 748                         load_user_plugins($link, $_SESSION["uid"]);
 749                 } else {
 750                         if (!$_SESSION["uid"] || !validate_session($link)) {
 751
 752                                 if (AUTH_AUTO_LOGIN && authenticate_user($link, null, null)) {
 753                                     $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 754                                 } else {
 755                                          authenticate_user($link, null, null, true);
 756                                 }
 757
 758                                 if (!$_SESSION["uid"]) render_login_form($link, $login_form);
 759
 760                         } else {
 761                                 /* bump login timestamp */
 762                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 763                                         $_SESSION["uid"]);
 764                         }
 765
 766                         if ($_SESSION["uid"] && $_SESSION["language"] && SESSION_COOKIE_LIFETIME > 0) {
 767                                 setcookie("ttrss_lang", $_SESSION["language"],
 768                                         time() + SESSION_COOKIE_LIFETIME);
 769                         }
 770
 771                         if ($_SESSION["uid"]) {
 772                                 cache_prefs($link);
 773                                 load_user_plugins($link, $_SESSION["uid"]);
 774                         }
 775                 }
 776         }
 777
 778         function truncate_string($str, $max_len, $suffix = '&hellip;') {
 779                 if (mb_strlen($str, "utf-8") > $max_len - 3) {
 780                         return mb_substr($str, 0, $max_len, "utf-8") . $suffix;
 781                 } else {
 782                         return $str;
 783                 }
 784         }
 785
 786         // Deprecated, TODO: remove
 787         function theme_image($link, $filename) {
 788                 return $filename;
 789         }
 790
 791         function convert_timestamp($timestamp, $source_tz, $dest_tz) {
 792
 793                 try {
 794                         $source_tz = new DateTimeZone($source_tz);
 795                 } catch (Exception $e) {
 796                         $source_tz = new DateTimeZone('UTC');
 797                 }
 798
 799                 try {
 800                         $dest_tz = new DateTimeZone($dest_tz);
 801                 } catch (Exception $e) {
 802                         $dest_tz = new DateTimeZone('UTC');
 803                 }
 804
 805                 $dt = new DateTime(date('Y-m-d H:i:s', $timestamp), $source_tz);
 806                 return $dt->format('U') + $dest_tz->getOffset($dt);
 807         }
 808
 809         function make_local_datetime($link, $timestamp, $long, $owner_uid = false,
 810                                         $no_smart_dt = false) {
 811
 812                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 813                 if (!$timestamp) $timestamp = '1970-01-01 0:00';
 814
 815                 global $utc_tz;
 816                 global $tz_offset;
 817
 818                 # We store date in UTC internally
 819                 $dt = new DateTime($timestamp, $utc_tz);
 820
 821                 if ($tz_offset == -1) {
 822
 823                         $user_tz_string = get_pref($link, 'USER_TIMEZONE', $owner_uid);
 824
 825                         try {
 826                                 $user_tz = new DateTimeZone($user_tz_string);
 827                         } catch (Exception $e) {
 828                                 $user_tz = $utc_tz;
 829                         }
 830
 831                         $tz_offset = $user_tz->getOffset($dt);
 832                 }
 833
 834                 $user_timestamp = $dt->format('U') + $tz_offset;
 835
 836                 if (!$no_smart_dt) {
 837                         return smart_date_time($link, $user_timestamp,
 838                                 $tz_offset, $owner_uid);
 839                 } else {
 840                         if ($long)
 841                                 $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 842                         else
 843                                 $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 844
 845                         return date($format, $user_timestamp);
 846                 }
 847         }
 848
 849         function smart_date_time($link, $timestamp, $tz_offset = 0, $owner_uid = false) {
 850                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 851
 852                 if (date("Y.m.d", $timestamp) == date("Y.m.d", time() + $tz_offset)) {
 853                         return date("G:i", $timestamp);
 854                 } else if (date("Y", $timestamp) == date("Y", time() + $tz_offset)) {
 855                         $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 856                         return date($format, $timestamp);
 857                 } else {
 858                         $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 859                         return date($format, $timestamp);
 860                 }
 861         }
 862
 863         function sql_bool_to_bool($s) {
 864                 if ($s == "t" || $s == "1" || strtolower($s) == "true") {
 865                         return true;
 866                 } else {
 867                         return false;
 868                 }
 869         }
 870
 871         function bool_to_sql_bool($s) {
 872                 if ($s) {
 873                         return "true";
 874                 } else {
 875                         return "false";
 876                 }
 877         }
 878
 879         // Session caching removed due to causing wrong redirects to upgrade
 880         // script when get_schema_version() is called on an obsolete session
 881         // created on a previous schema version.
 882         function get_schema_version($link, $nocache = false) {
 883                 global $schema_version;
 884
 885                 if (!$schema_version) {
 886                         $result = db_query($link, "SELECT schema_version FROM ttrss_version");
 887                         $version = db_fetch_result($result, 0, "schema_version");
 888                         $schema_version = $version;
 889                         return $version;
 890                 } else {
 891                         return $schema_version;
 892                 }
 893         }
 894
 895         function sanity_check($link) {
 896                 require_once 'errors.php';
 897
 898                 $error_code = 0;
 899                 $schema_version = get_schema_version($link, true);
 900
 901                 if ($schema_version != SCHEMA_VERSION) {
 902                         $error_code = 5;
 903                 }
 904
 905                 if (DB_TYPE == "mysql") {
 906                         $result = db_query($link, "SELECT true", false);
 907                         if (db_num_rows($result) != 1) {
 908                                 $error_code = 10;
 909                         }
 910                 }
 911
 912                 if (db_escape_string("testTEST") != "testTEST") {
 913                         $error_code = 12;
 914                 }
 915
 916                 return array("code" => $error_code, "message" => $ERRORS[$error_code]);
 917         }
 918
 919         function file_is_locked($filename) {
 920                 if (function_exists('flock')) {
 921                         $fp = @fopen(LOCK_DIRECTORY . "/$filename", "r");
 922                         if ($fp) {
 923                                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 924                                         flock($fp, LOCK_UN);
 925                                         fclose($fp);
 926                                         return false;
 927                                 }
 928                                 fclose($fp);
 929                                 return true;
 930                         } else {
 931                                 return false;
 932                         }
 933                 }
 934                 return true; // consider the file always locked and skip the test
 935         }
 936
 937         function make_lockfile($filename) {
 938                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
 939
 940                 if ($fp && flock($fp, LOCK_EX | LOCK_NB)) {
 941                         if (function_exists('posix_getpid')) {
 942                                 fwrite($fp, posix_getpid() . "\n");
 943                         }
 944                         return $fp;
 945                 } else {
 946                         return false;
 947                 }
 948         }
 949
 950         function make_stampfile($filename) {
 951                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
 952
 953                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 954                         fwrite($fp, time() . "\n");
 955                         flock($fp, LOCK_UN);
 956                         fclose($fp);
 957                         return true;
 958                 } else {
 959                         return false;
 960                 }
 961         }
 962
 963         function sql_random_function() {
 964                 if (DB_TYPE == "mysql") {
 965                         return "RAND()";
 966                 } else {
 967                         return "RANDOM()";
 968                 }
 969         }
 970
 971         function catchup_feed($link, $feed, $cat_view, $owner_uid = false, $max_id = false) {
 972
 973                         if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 974
 975                         //if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
 976
 977                         $ref_check_qpart = ($max_id &&
 978                                 !get_pref($link, 'REVERSE_HEADLINES')) ? "ref_id <= '$max_id'" : "true";
 979
 980                         if (is_numeric($feed)) {
 981                                 if ($cat_view) {
 982
 983                                         if ($feed >= 0) {
 984
 985                                                 if ($feed > 0) {
 986                                                         $children = getChildCategories($link, $feed, $owner_uid);
 987                                                         array_push($children, $feed);
 988
 989                                                         $children = join(",", $children);
 990
 991                                                         $cat_qpart = "cat_id IN ($children)";
 992                                                 } else {
 993                                                         $cat_qpart = "cat_id IS NULL";
 994                                                 }
 995
 996                                                 db_query($link, "UPDATE ttrss_user_entries
 997                                                         SET unread = false,last_read = NOW()
 998                                                         WHERE feed_id IN (SELECT id FROM ttrss_feeds WHERE $cat_qpart)
 999                                                         AND $ref_check_qpart AND unread = true
1000                                                         AND owner_uid = $owner_uid");
1001
1002                                         } else if ($feed == -2) {
1003
1004                                                 db_query($link, "UPDATE ttrss_user_entries
1005                                                         SET unread = false,last_read = NOW() WHERE (SELECT COUNT(*)
1006                                                                 FROM ttrss_user_labels2 WHERE article_id = ref_id) > 0
1007                                                                 AND $ref_check_qpart
1008                                                                 AND unread = true AND owner_uid = $owner_uid");
1009                                         }
1010
1011                                 } else if ($feed > 0) {
1012
1013                                         db_query($link, "UPDATE ttrss_user_entries
1014                                                         SET unread = false,last_read = NOW()
1015                                                         WHERE feed_id = '$feed'
1016                                                         AND $ref_check_qpart AND unread = true
1017                                                         AND owner_uid = $owner_uid");
1018
1019                                 } else if ($feed < 0 && $feed > -10) { // special, like starred
1020
1021                                         if ($feed == -1) {
1022                                                 db_query($link, "UPDATE ttrss_user_entries
1023                                                         SET unread = false,last_read = NOW()
1024                                                         WHERE marked = true
1025                                                         AND $ref_check_qpart AND unread = true
1026                                                         AND owner_uid = $owner_uid");
1027                                         }
1028
1029                                         if ($feed == -2) {
1030                                                 db_query($link, "UPDATE ttrss_user_entries
1031                                                         SET unread = false,last_read = NOW()
1032                                                         WHERE published = true
1033                                                         AND $ref_check_qpart AND unread = true
1034                                                         AND owner_uid = $owner_uid");
1035                                         }
1036
1037                                         if ($feed == -3) {
1038
1039                                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE");
1040
1041                                                 if (DB_TYPE == "pgsql") {
1042                                                         $match_part = "updated > NOW() - INTERVAL '$intl hour' ";
1043                                                 } else {
1044                                                         $match_part = "updated > DATE_SUB(NOW(),
1045                                                                 INTERVAL $intl HOUR) ";
1046                                                 }
1047
1048                                                 $result = db_query($link, "SELECT id FROM ttrss_entries,
1049                                                         ttrss_user_entries WHERE $match_part AND
1050                                                         unread = true AND
1051                                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
1052                                                         owner_uid = $owner_uid");
1053
1054                                                 $affected_ids = array();
1055
1056                                                 while ($line = db_fetch_assoc($result)) {
1057                                                         array_push($affected_ids, $line["id"]);
1058                                                 }
1059
1060                                                 catchupArticlesById($link, $affected_ids, 0);
1061                                         }
1062
1063                                         if ($feed == -4) {
1064                                                 db_query($link, "UPDATE ttrss_user_entries
1065                                                         SET unread = false,last_read = NOW()
1066                                                         WHERE $ref_check_qpart AND unread = true AND
1067                                                         owner_uid = $owner_uid");
1068                                         }
1069
1070                                 } else if ($feed < -10) { // label
1071
1072                                         $label_id = -$feed - 11;
1073
1074                                         db_query($link, "UPDATE ttrss_user_entries, ttrss_user_labels2
1075                                                 SET unread = false, last_read = NOW()
1076                                                         WHERE label_id = '$label_id' AND unread = true
1077                                                         AND $ref_check_qpart
1078                                                         AND owner_uid = '$owner_uid' AND ref_id = article_id");
1079
1080                                 }
1081
1082                                 ccache_update($link, $feed, $owner_uid, $cat_view);
1083
1084                         } else { // tag
1085                                 db_query($link, "BEGIN");
1086
1087                                 $tag_name = db_escape_string($feed);
1088
1089                                 $result = db_query($link, "SELECT post_int_id FROM ttrss_tags
1090                                         WHERE tag_name = '$tag_name' AND owner_uid = $owner_uid");
1091
1092                                 while ($line = db_fetch_assoc($result)) {
1093                                         db_query($link, "UPDATE ttrss_user_entries SET
1094                                                 unread = false, last_read = NOW()
1095                                                 WHERE $ref_check_qpart AND unread = true
1096                                                 AND int_id = " . $line["post_int_id"]);
1097                                 }
1098                                 db_query($link, "COMMIT");
1099                         }
1100         }
1101
1102         function getAllCounters($link) {
1103                 $data = getGlobalCounters($link);
1104
1105                 $data = array_merge($data, getVirtCounters($link));
1106                 $data = array_merge($data, getLabelCounters($link));
1107                 $data = array_merge($data, getFeedCounters($link, $active_feed));
1108                 $data = array_merge($data, getCategoryCounters($link));
1109
1110                 return $data;
1111         }
1112
1113         function getCategoryTitle($link, $cat_id) {
1114
1115                 if ($cat_id == -1) {
1116                         return __("Special");
1117                 } else if ($cat_id == -2) {
1118                         return __("Labels");
1119                 } else {
1120
1121                         $result = db_query($link, "SELECT title FROM ttrss_feed_categories WHERE
1122                                 id = '$cat_id'");
1123
1124                         if (db_num_rows($result) == 1) {
1125                                 return db_fetch_result($result, 0, "title");
1126                         } else {
1127                                 return __("Uncategorized");
1128                         }
1129                 }
1130         }
1131
1132
1133         function getCategoryCounters($link) {
1134                 $ret_arr = array();
1135
1136                 /* Labels category */
1137
1138                 $cv = array("id" => -2, "kind" => "cat",
1139                         "counter" => getCategoryUnread($link, -2));
1140
1141                 array_push($ret_arr, $cv);
1142
1143                 $result = db_query($link, "SELECT id AS cat_id, value AS unread,
1144                         (SELECT COUNT(id) FROM ttrss_feed_categories AS c2
1145                                 WHERE c2.parent_cat = ttrss_feed_categories.id) AS num_children
1146                         FROM ttrss_feed_categories, ttrss_cat_counters_cache
1147                         WHERE ttrss_cat_counters_cache.feed_id = id AND
1148                         ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid AND
1149                         ttrss_feed_categories.owner_uid = " . $_SESSION["uid"]);
1150
1151                 while ($line = db_fetch_assoc($result)) {
1152                         $line["cat_id"] = (int) $line["cat_id"];
1153
1154                         if ($line["num_children"] > 0) {
1155                                 $child_counter = getCategoryChildrenUnread($link, $line["cat_id"], $_SESSION["uid"]);
1156                         } else {
1157                                 $child_counter = 0;
1158                         }
1159
1160                         $cv = array("id" => $line["cat_id"], "kind" => "cat",
1161                                 "counter" => $line["unread"] + $child_counter);
1162
1163                         array_push($ret_arr, $cv);
1164                 }
1165
1166                 /* Special case: NULL category doesn't actually exist in the DB */
1167
1168                 $cv = array("id" => 0, "kind" => "cat",
1169                         "counter" => (int) ccache_find($link, 0, $_SESSION["uid"], true));
1170
1171                 array_push($ret_arr, $cv);
1172
1173                 return $ret_arr;
1174         }
1175
1176         // only accepts real cats (>= 0)
1177         function getCategoryChildrenUnread($link, $cat, $owner_uid = false) {
1178                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1179
1180                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories WHERE parent_cat = '$cat'
1181                                 AND owner_uid = $owner_uid");
1182
1183                 $unread = 0;
1184
1185                 while ($line = db_fetch_assoc($result)) {
1186                         $unread += getCategoryUnread($link, $line["id"], $owner_uid);
1187                         $unread += getCategoryChildrenUnread($link, $line["id"], $owner_uid);
1188                 }
1189
1190                 return $unread;
1191         }
1192
1193         function getCategoryUnread($link, $cat, $owner_uid = false) {
1194
1195                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1196
1197                 if ($cat >= 0) {
1198
1199                         if ($cat != 0) {
1200                                 $cat_query = "cat_id = '$cat'";
1201                         } else {
1202                                 $cat_query = "cat_id IS NULL";
1203                         }
1204
1205                         $result = db_query($link, "SELECT id FROM ttrss_feeds WHERE $cat_query
1206                                         AND owner_uid = " . $owner_uid);
1207
1208                         $cat_feeds = array();
1209                         while ($line = db_fetch_assoc($result)) {
1210                                 array_push($cat_feeds, "feed_id = " . $line["id"]);
1211                         }
1212
1213                         if (count($cat_feeds) == 0) return 0;
1214
1215                         $match_part = implode(" OR ", $cat_feeds);
1216
1217                         $result = db_query($link, "SELECT COUNT(int_id) AS unread
1218                                 FROM ttrss_user_entries
1219                                 WHERE   unread = true AND ($match_part)
1220                                 AND owner_uid = " . $owner_uid);
1221
1222                         $unread = 0;
1223
1224                         # this needs to be rewritten
1225                         while ($line = db_fetch_assoc($result)) {
1226                                 $unread += $line["unread"];
1227                         }
1228
1229                         return $unread;
1230                 } else if ($cat == -1) {
1231                         return getFeedUnread($link, -1) + getFeedUnread($link, -2) + getFeedUnread($link, -3) + getFeedUnread($link, 0);
1232                 } else if ($cat == -2) {
1233
1234                         $result = db_query($link, "
1235                                 SELECT COUNT(unread) AS unread FROM
1236                                         ttrss_user_entries, ttrss_user_labels2
1237                                 WHERE article_id = ref_id AND unread = true
1238                                         AND ttrss_user_entries.owner_uid = '$owner_uid'");
1239
1240                         $unread = db_fetch_result($result, 0, "unread");
1241
1242                         return $unread;
1243
1244                 }
1245         }
1246
1247         function getFeedUnread($link, $feed, $is_cat = false) {
1248                 return getFeedArticles($link, $feed, $is_cat, true, $_SESSION["uid"]);
1249         }
1250
1251         function getLabelUnread($link, $label_id, $owner_uid = false) {
1252                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1253
1254                 $result = db_query($link, "SELECT COUNT(ref_id) AS unread FROM ttrss_user_entries, ttrss_user_labels2
1255                         WHERE owner_uid = '$owner_uid' AND unread = true AND label_id = '$label_id' AND article_id = ref_id");
1256
1257                 if (db_num_rows($result) != 0) {
1258                         return db_fetch_result($result, 0, "unread");
1259                 } else {
1260                         return 0;
1261                 }
1262         }
1263
1264         function getFeedArticles($link, $feed, $is_cat = false, $unread_only = false,
1265                 $owner_uid = false) {
1266
1267                 $n_feed = (int) $feed;
1268                 $need_entries = false;
1269
1270                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1271
1272                 if ($unread_only) {
1273                         $unread_qpart = "unread = true";
1274                 } else {
1275                         $unread_qpart = "true";
1276                 }
1277
1278                 if ($is_cat) {
1279                         return getCategoryUnread($link, $n_feed, $owner_uid);
1280                 } else if ($n_feed == -6) {
1281                         return 0;
1282                 } else if ($feed != "0" && $n_feed == 0) {
1283
1284                         $feed = db_escape_string($feed);
1285
1286                         $result = db_query($link, "SELECT SUM((SELECT COUNT(int_id)
1287                                 FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1288                                         AND ref_id = id AND $unread_qpart)) AS count FROM ttrss_tags
1289                                 WHERE owner_uid = $owner_uid AND tag_name = '$feed'");
1290                         return db_fetch_result($result, 0, "count");
1291
1292                 } else if ($n_feed == -1) {
1293                         $match_part = "marked = true";
1294                 } else if ($n_feed == -2) {
1295                         $match_part = "published = true";
1296                 } else if ($n_feed == -3) {
1297                         $match_part = "unread = true AND score >= 0";
1298
1299                         $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
1300
1301                         if (DB_TYPE == "pgsql") {
1302                                 $match_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
1303                         } else {
1304                                 $match_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
1305                         }
1306
1307                         $need_entries = true;
1308
1309                 } else if ($n_feed == -4) {
1310                         $match_part = "true";
1311                 } else if ($n_feed >= 0) {
1312
1313                         if ($n_feed != 0) {
1314                                 $match_part = "feed_id = '$n_feed'";
1315                         } else {
1316                                 $match_part = "feed_id IS NULL";
1317                         }
1318
1319                 } else if ($feed < -10) {
1320
1321                         $label_id = -$feed - 11;
1322
1323                         return getLabelUnread($link, $label_id, $owner_uid);
1324
1325                 }
1326
1327                 if ($match_part) {
1328
1329                         if ($need_entries) {
1330                                 $from_qpart = "ttrss_user_entries,ttrss_entries";
1331                                 $from_where = "ttrss_entries.id = ttrss_user_entries.ref_id AND";
1332                         } else {
1333                                 $from_qpart = "ttrss_user_entries";
1334                         }
1335
1336                         $query = "SELECT count(int_id) AS unread
1337                                 FROM $from_qpart WHERE
1338                                 $unread_qpart AND $from_where ($match_part) AND ttrss_user_entries.owner_uid = $owner_uid";
1339
1340                         //echo "[$feed/$query]\n";
1341
1342                         $result = db_query($link, $query);
1343
1344                 } else {
1345
1346                         $result = db_query($link, "SELECT COUNT(post_int_id) AS unread
1347                                 FROM ttrss_tags,ttrss_user_entries,ttrss_entries
1348                                 WHERE tag_name = '$feed' AND post_int_id = int_id AND ref_id = ttrss_entries.id
1349                                 AND $unread_qpart AND ttrss_tags.owner_uid = " . $owner_uid);
1350                 }
1351
1352                 $unread = db_fetch_result($result, 0, "unread");
1353
1354                 return $unread;
1355         }
1356
1357         function getGlobalUnread($link, $user_id = false) {
1358
1359                 if (!$user_id) {
1360                         $user_id = $_SESSION["uid"];
1361                 }
1362
1363                 $result = db_query($link, "SELECT SUM(value) AS c_id FROM ttrss_counters_cache
1364                         WHERE owner_uid = '$user_id' AND feed_id > 0");
1365
1366                 $c_id = db_fetch_result($result, 0, "c_id");
1367
1368                 return $c_id;
1369         }
1370
1371         function getGlobalCounters($link, $global_unread = -1) {
1372                 $ret_arr = array();
1373
1374                 if ($global_unread == -1) {
1375                         $global_unread = getGlobalUnread($link);
1376                 }
1377
1378                 $cv = array("id" => "global-unread",
1379                         "counter" => (int) $global_unread);
1380
1381                 array_push($ret_arr, $cv);
1382
1383                 $result = db_query($link, "SELECT COUNT(id) AS fn FROM
1384                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1385
1386                 $subscribed_feeds = db_fetch_result($result, 0, "fn");
1387
1388                 $cv = array("id" => "subscribed-feeds",
1389                         "counter" => (int) $subscribed_feeds);
1390
1391                 array_push($ret_arr, $cv);
1392
1393                 return $ret_arr;
1394         }
1395
1396         function getVirtCounters($link) {
1397
1398                 $ret_arr = array();
1399
1400                 for ($i = 0; $i >= -4; $i--) {
1401
1402                         $count = getFeedUnread($link, $i);
1403
1404                         $cv = array("id" => $i,
1405                                 "counter" => (int) $count);
1406
1407 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1408 //                              $cv["xmsg"] = getFeedArticles($link, $i)." ".__("total");
1409
1410                         array_push($ret_arr, $cv);
1411                 }
1412
1413                 return $ret_arr;
1414         }
1415
1416         function getLabelCounters($link, $descriptions = false) {
1417
1418                 $ret_arr = array();
1419
1420                 $owner_uid = $_SESSION["uid"];
1421
1422                 $result = db_query($link, "SELECT id,caption,COUNT(unread) AS unread
1423                         FROM ttrss_labels2 LEFT JOIN ttrss_user_labels2 ON
1424                                 (ttrss_labels2.id = label_id)
1425                                         LEFT JOIN ttrss_user_entries ON (ref_id = article_id AND unread = true)
1426                                 WHERE ttrss_labels2.owner_uid = $owner_uid GROUP BY ttrss_labels2.id,
1427                                         ttrss_labels2.caption");
1428
1429                 while ($line = db_fetch_assoc($result)) {
1430
1431                         $id = -$line["id"] - 11;
1432
1433                         $label_name = $line["caption"];
1434                         $count = $line["unread"];
1435
1436                         $cv = array("id" => $id,
1437                                 "counter" => (int) $count);
1438
1439                         if ($descriptions)
1440                                 $cv["description"] = $label_name;
1441
1442 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1443 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1444
1445                         array_push($ret_arr, $cv);
1446                 }
1447
1448                 return $ret_arr;
1449         }
1450
1451         function getFeedCounters($link, $active_feed = false) {
1452
1453                 $ret_arr = array();
1454
1455                 $query = "SELECT ttrss_feeds.id,
1456                                 ttrss_feeds.title,
1457                                 ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
1458                                 last_error, value AS count
1459                         FROM ttrss_feeds, ttrss_counters_cache
1460                         WHERE ttrss_feeds.owner_uid = ".$_SESSION["uid"]."
1461                                 AND ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid
1462                                 AND ttrss_counters_cache.feed_id = id";
1463
1464                 $result = db_query($link, $query);
1465                 $fctrs_modified = false;
1466
1467                 while ($line = db_fetch_assoc($result)) {
1468
1469                         $id = $line["id"];
1470                         $count = $line["count"];
1471                         $last_error = htmlspecialchars($line["last_error"]);
1472
1473                         $last_updated = make_local_datetime($link, $line['last_updated'], false);
1474
1475                         $has_img = feed_has_icon($id);
1476
1477                         if (date('Y') - date('Y', strtotime($line['last_updated'])) > 2)
1478                                 $last_updated = '';
1479
1480                         $cv = array("id" => $id,
1481                                 "updated" => $last_updated,
1482                                 "counter" => (int) $count,
1483                                 "has_img" => (int) $has_img);
1484
1485                         if ($last_error)
1486                                 $cv["error"] = $last_error;
1487
1488 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1489 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1490
1491                         if ($active_feed && $id == $active_feed)
1492                                 $cv["title"] = truncate_string($line["title"], 30);
1493
1494                         array_push($ret_arr, $cv);
1495
1496                 }
1497
1498                 return $ret_arr;
1499         }
1500
1501         function get_pgsql_version($link) {
1502                 $result = db_query($link, "SELECT version() AS version");
1503                 $version = explode(" ", db_fetch_result($result, 0, "version"));
1504                 return $version[1];
1505         }
1506
1507         /**
1508          * @return array (code => Status code, message => error message if available)
1509          *
1510          *                 0 - OK, Feed already exists
1511          *                 1 - OK, Feed added
1512          *                 2 - Invalid URL
1513          *                 3 - URL content is HTML, no feeds available
1514          *                 4 - URL content is HTML which contains multiple feeds.
1515          *                     Here you should call extractfeedurls in rpc-backend
1516          *                     to get all possible feeds.
1517          *                 5 - Couldn't download the URL content.
1518          */
1519         function subscribe_to_feed($link, $url, $cat_id = 0,
1520                         $auth_login = '', $auth_pass = '', $need_auth = false) {
1521
1522                 global $fetch_last_error;
1523
1524                 require_once "include/rssfuncs.php";
1525
1526                 $url = fix_url($url);
1527
1528                 if (!$url || !validate_feed_url($url)) return array("code" => 2);
1529
1530                 $contents = @fetch_file_contents($url, false, $auth_login, $auth_pass);
1531
1532                 if (!$contents) {
1533                         return array("code" => 5, "message" => $fetch_last_error);
1534                 }
1535
1536                 if (is_html($contents)) {
1537                         $feedUrls = get_feeds_from_html($url, $contents);
1538
1539                         if (count($feedUrls) == 0) {
1540                                 return array("code" => 3);
1541                         } else if (count($feedUrls) > 1) {
1542                                 return array("code" => 4, "feeds" => $feedUrls);
1543                         }
1544                         //use feed url as new URL
1545                         $url = key($feedUrls);
1546                 }
1547
1548                 if ($cat_id == "0" || !$cat_id) {
1549                         $cat_qpart = "NULL";
1550                 } else {
1551                         $cat_qpart = "'$cat_id'";
1552                 }
1553
1554                 $result = db_query($link,
1555                         "SELECT id FROM ttrss_feeds
1556                         WHERE feed_url = '$url' AND owner_uid = ".$_SESSION["uid"]);
1557
1558                 if (db_num_rows($result) == 0) {
1559                         $result = db_query($link,
1560                                 "INSERT INTO ttrss_feeds
1561                                         (owner_uid,feed_url,title,cat_id, auth_login,auth_pass,update_method)
1562                                 VALUES ('".$_SESSION["uid"]."', '$url',
1563                                 '[Unknown]', $cat_qpart, '$auth_login', '$auth_pass', 0)");
1564
1565                         $result = db_query($link,
1566                                 "SELECT id FROM ttrss_feeds WHERE feed_url = '$url'
1567                                         AND owner_uid = " . $_SESSION["uid"]);
1568
1569                         $feed_id = db_fetch_result($result, 0, "id");
1570
1571                         if ($feed_id) {
1572                                 update_rss_feed($link, $feed_id, true);
1573                         }
1574
1575                         return array("code" => 1);
1576                 } else {
1577                         return array("code" => 0);
1578                 }
1579         }
1580
1581         function print_feed_select($link, $id, $default_id = "",
1582                 $attributes = "", $include_all_feeds = true,
1583                 $root_id = false, $nest_level = 0) {
1584
1585                 if (!$root_id) {
1586                         print "<select id=\"$id\" name=\"$id\" $attributes>";
1587                         if ($include_all_feeds) {
1588                                 $is_selected = ("0" == $default_id) ? "selected=\"1\"" : "";
1589                                 print "<option $is_selected value=\"0\">".__('All feeds')."</option>";
1590                         }
1591                 }
1592
1593                 if (get_pref($link, 'ENABLE_FEED_CATS')) {
1594
1595                         if ($root_id)
1596                                 $parent_qpart = "parent_cat = '$root_id'";
1597                         else
1598                                 $parent_qpart = "parent_cat IS NULL";
1599
1600                         $result = db_query($link, "SELECT id,title,
1601                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1602                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1603                                 FROM ttrss_feed_categories
1604                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1605
1606                         while ($line = db_fetch_assoc($result)) {
1607
1608                                 for ($i = 0; $i < $nest_level; $i++)
1609                                         $line["title"] = " - " . $line["title"];
1610
1611                                 $is_selected = ("CAT:".$line["id"] == $default_id) ? "selected=\"1\"" : "";
1612
1613                                 printf("<option $is_selected value='CAT:%d'>%s</option>",
1614                                         $line["id"], htmlspecialchars($line["title"]));
1615
1616                                 if ($line["num_children"] > 0)
1617                                         print_feed_select($link, $id, $default_id, $attributes,
1618                                                 $include_all_feeds, $line["id"], $nest_level+1);
1619
1620                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1621                                         WHERE cat_id = '".$line["id"]."' AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1622
1623                                 while ($fline = db_fetch_assoc($feed_result)) {
1624                                         $is_selected = ($fline["id"] == $default_id) ? "selected=\"1\"" : "";
1625
1626                                         $fline["title"] = " + " . $fline["title"];
1627
1628                                         for ($i = 0; $i < $nest_level; $i++)
1629                                                 $fline["title"] = " - " . $fline["title"];
1630
1631                                         printf("<option $is_selected value='%d'>%s</option>",
1632                                                 $fline["id"], htmlspecialchars($fline["title"]));
1633                                 }
1634                         }
1635
1636                         if (!$root_id) {
1637                                 $is_selected = ($default_id == "CAT:0") ? "selected=\"1\"" : "";
1638
1639                                 printf("<option $is_selected value='CAT:0'>%s</option>",
1640                                         __("Uncategorized"));
1641
1642                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1643                                         WHERE cat_id IS NULL AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1644
1645                                 while ($fline = db_fetch_assoc($feed_result)) {
1646                                         $is_selected = ($fline["id"] == $default_id && !$default_is_cat) ? "selected=\"1\"" : "";
1647
1648                                         $fline["title"] = " + " . $fline["title"];
1649
1650                                         for ($i = 0; $i < $nest_level; $i++)
1651                                                 $fline["title"] = " - " . $fline["title"];
1652
1653                                         printf("<option $is_selected value='%d'>%s</option>",
1654                                                 $fline["id"], htmlspecialchars($fline["title"]));
1655                                 }
1656                         }
1657
1658                 } else {
1659                         $result = db_query($link, "SELECT id,title FROM ttrss_feeds
1660                                 WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
1661
1662                         while ($line = db_fetch_assoc($result)) {
1663
1664                                 $is_selected = ($line["id"] == $default_id) ? "selected=\"1\"" : "";
1665
1666                                 printf("<option $is_selected value='%d'>%s</option>",
1667                                         $line["id"], htmlspecialchars($line["title"]));
1668                         }
1669                 }
1670
1671                 if (!$root_id) {
1672                         print "</select>";
1673                 }
1674         }
1675
1676         function print_feed_cat_select($link, $id, $default_id,
1677                 $attributes, $include_all_cats = true, $root_id = false, $nest_level = 0) {
1678
1679                         if (!$root_id) {
1680                                         print "<select id=\"$id\" name=\"$id\" default=\"$default_id\" onchange=\"catSelectOnChange(this)\" $attributes>";
1681                         }
1682
1683                         if ($root_id)
1684                                 $parent_qpart = "parent_cat = '$root_id'";
1685                         else
1686                                 $parent_qpart = "parent_cat IS NULL";
1687
1688                         $result = db_query($link, "SELECT id,title,
1689                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1690                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1691                                 FROM ttrss_feed_categories
1692                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1693
1694                         while ($line = db_fetch_assoc($result)) {
1695                                 if ($line["id"] == $default_id) {
1696                                         $is_selected = "selected=\"1\"";
1697                                 } else {
1698                                         $is_selected = "";
1699                                 }
1700
1701                                 for ($i = 0; $i < $nest_level; $i++)
1702                                         $line["title"] = " - " . $line["title"];
1703
1704                                 if ($line["title"])
1705                                         printf("<option $is_selected value='%d'>%s</option>",
1706                                                 $line["id"], htmlspecialchars($line["title"]));
1707
1708                                 if ($line["num_children"] > 0)
1709                                         print_feed_cat_select($link, $id, $default_id, $attributes,
1710                                                 $include_all_cats, $line["id"], $nest_level+1);
1711                         }
1712
1713                         if (!$root_id) {
1714                                 if ($include_all_cats) {
1715                                         if (db_num_rows($result) > 0) {
1716                                                 print "<option disabled=\"1\">--------</option>";
1717                                         }
1718
1719                                         if ($default_id == 0) {
1720                                                 $is_selected = "selected=\"1\"";
1721                                         } else {
1722                                                 $is_selected = "";
1723                                         }
1724
1725                                         print "<option $is_selected value=\"0\">".__('Uncategorized')."</option>";
1726                                 }
1727                                 print "</select>";
1728                         }
1729                 }
1730
1731         function checkbox_to_sql_bool($val) {
1732                 return ($val == "on") ? "true" : "false";
1733         }
1734
1735         function getFeedCatTitle($link, $id) {
1736                 if ($id == -1) {
1737                         return __("Special");
1738                 } else if ($id < -10) {
1739                         return __("Labels");
1740                 } else if ($id > 0) {
1741                         $result = db_query($link, "SELECT ttrss_feed_categories.title
1742                                 FROM ttrss_feeds, ttrss_feed_categories WHERE ttrss_feeds.id = '$id' AND
1743                                         cat_id = ttrss_feed_categories.id");
1744                         if (db_num_rows($result) == 1) {
1745                                 return db_fetch_result($result, 0, "title");
1746                         } else {
1747                                 return __("Uncategorized");
1748                         }
1749                 } else {
1750                         return "getFeedCatTitle($id) failed";
1751                 }
1752
1753         }
1754
1755         function getFeedIcon($id) {
1756                 switch ($id) {
1757                 case 0:
1758                         return "images/archive.png";
1759                         break;
1760                 case -1:
1761                         return "images/mark_set.svg";
1762                         break;
1763                 case -2:
1764                         return "images/pub_set.svg";
1765                         break;
1766                 case -3:
1767                         return "images/fresh.png";
1768                         break;
1769                 case -4:
1770                         return "images/tag.png";
1771                         break;
1772                 case -6:
1773                         return "images/recently_read.png";
1774                         break;
1775                 default:
1776                         if ($id < -10) {
1777                                 return "images/label.png";
1778                         } else {
1779                                 if (file_exists(ICONS_DIR . "/$id.ico"))
1780                                         return ICONS_URL . "/$id.ico";
1781                         }
1782                         break;
1783                 }
1784         }
1785
1786         function getFeedTitle($link, $id, $cat = false) {
1787                 if ($cat) {
1788                         return getCategoryTitle($link, $id);
1789                 } else if ($id == -1) {
1790                         return __("Starred articles");
1791                 } else if ($id == -2) {
1792                         return __("Published articles");
1793                 } else if ($id == -3) {
1794                         return __("Fresh articles");
1795                 } else if ($id == -4) {
1796                         return __("All articles");
1797                 } else if ($id === 0 || $id === "0") {
1798                         return __("Archived articles");
1799                 } else if ($id == -6) {
1800                         return __("Recently read");
1801                 } else if ($id < -10) {
1802                         $label_id = -$id - 11;
1803                         $result = db_query($link, "SELECT caption FROM ttrss_labels2 WHERE id = '$label_id'");
1804                         if (db_num_rows($result) == 1) {
1805                                 return db_fetch_result($result, 0, "caption");
1806                         } else {
1807                                 return "Unknown label ($label_id)";
1808                         }
1809
1810                 } else if (is_numeric($id) && $id > 0) {
1811                         $result = db_query($link, "SELECT title FROM ttrss_feeds WHERE id = '$id'");
1812                         if (db_num_rows($result) == 1) {
1813                                 return db_fetch_result($result, 0, "title");
1814                         } else {
1815                                 return "Unknown feed ($id)";
1816                         }
1817                 } else {
1818                         return $id;
1819                 }
1820         }
1821
1822         function make_init_params($link) {
1823                 $params = array();
1824
1825                 $params["sign_progress"] = theme_image($link, "images/indicator_white.gif");
1826                 $params["sign_progress_tiny"] = theme_image($link, "images/indicator_tiny.gif");
1827                 $params["sign_excl"] = theme_image($link, "images/sign_excl.svg");
1828                 $params["sign_info"] = theme_image($link, "images/sign_info.svg");
1829
1830                 foreach (array("ON_CATCHUP_SHOW_NEXT_FEED", "HIDE_READ_FEEDS",
1831                         "ENABLE_FEED_CATS", "FEEDS_SORT_BY_UNREAD", "CONFIRM_FEED_CATCHUP",
1832                         "CDM_AUTO_CATCHUP", "FRESH_ARTICLE_MAX_AGE", "DEFAULT_ARTICLE_LIMIT",
1833                         "HIDE_READ_SHOWS_SPECIAL", "COMBINED_DISPLAY_MODE") as $param) {
1834
1835                                  $params[strtolower($param)] = (int) get_pref($link, $param);
1836                  }
1837
1838                 $params["icons_url"] = ICONS_URL;
1839                 $params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
1840                 $params["default_view_mode"] = get_pref($link, "_DEFAULT_VIEW_MODE");
1841                 $params["default_view_limit"] = (int) get_pref($link, "_DEFAULT_VIEW_LIMIT");
1842                 $params["default_view_order_by"] = get_pref($link, "_DEFAULT_VIEW_ORDER_BY");
1843                 $params["bw_limit"] = (int) $_SESSION["bw_limit"];
1844
1845                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
1846                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1847
1848                 $max_feed_id = db_fetch_result($result, 0, "mid");
1849                 $num_feeds = db_fetch_result($result, 0, "nf");
1850
1851                 $params["max_feed_id"] = (int) $max_feed_id;
1852                 $params["num_feeds"] = (int) $num_feeds;
1853
1854                 $params["collapsed_feedlist"] = (int) get_pref($link, "_COLLAPSED_FEEDLIST");
1855                 $params["hotkeys"] = get_hotkeys_map($link);
1856
1857                 $params["csrf_token"] = $_SESSION["csrf_token"];
1858                 $params["widescreen"] = (int) $_COOKIE["ttrss_widescreen"];
1859
1860                 $params['simple_update'] = defined('SIMPLE_UPDATE_MODE') && SIMPLE_UPDATE_MODE;
1861
1862                 return $params;
1863         }
1864
1865         function get_hotkeys_info($link) {
1866                 $hotkeys = array(
1867                         __("Navigation") => array(
1868                                 "next_feed" => __("Open next feed"),
1869                                 "prev_feed" => __("Open previous feed"),
1870                                 "next_article" => __("Open next article"),
1871                                 "prev_article" => __("Open previous article"),
1872                                 "next_article_noscroll" => __("Open next article (don't scroll long articles)"),
1873                                 "prev_article_noscroll" => __("Open previous article (don't scroll long articles)"),
1874                                 "search_dialog" => __("Show search dialog")),
1875                         __("Article") => array(
1876                                 "toggle_mark" => __("Toggle starred"),
1877                                 "toggle_publ" => __("Toggle published"),
1878                                 "toggle_unread" => __("Toggle unread"),
1879                                 "edit_tags" => __("Edit tags"),
1880                                 "dismiss_selected" => __("Dismiss selected"),
1881                                 "dismiss_read" => __("Dismiss read"),
1882                                 "open_in_new_window" => __("Open in new window"),
1883                                 "catchup_below" => __("Mark below as read"),
1884                                 "catchup_above" => __("Mark above as read"),
1885                                 "article_scroll_down" => __("Scroll down"),
1886                                 "article_scroll_up" => __("Scroll up"),
1887                                 "select_article_cursor" => __("Select article under cursor"),
1888                                 "email_article" => __("Email article"),
1889                                 "close_article" => __("Close article"),
1890                                 "toggle_widescreen" => __("Toggle widescreen mode")),
1891                         __("Article selection") => array(
1892                                 "select_all" => __("Select all articles"),
1893                                 "select_unread" => __("Select unread"),
1894                                 "select_marked" => __("Select starred"),
1895                                 "select_published" => __("Select published"),
1896                                 "select_invert" => __("Invert selection"),
1897                                 "select_none" => __("Deselect everything")),
1898                         __("Feed") => array(
1899                                 "feed_refresh" => __("Refresh current feed"),
1900                                 "feed_unhide_read" => __("Un/hide read feeds"),
1901                                 "feed_subscribe" => __("Subscribe to feed"),
1902                                 "feed_edit" => __("Edit feed"),
1903                                 "feed_catchup" => __("Mark as read"),
1904                                 "feed_reverse" => __("Reverse headlines"),
1905                                 "feed_debug_update" => __("Debug feed update"),
1906                                 "catchup_all" => __("Mark all feeds as read"),
1907                                 "cat_toggle_collapse" => __("Un/collapse current category"),
1908                                 "toggle_combined_mode" => __("Toggle combined mode")),
1909                         __("Go to") => array(
1910                                 "goto_all" => __("All articles"),
1911                                 "goto_fresh" => __("Fresh"),
1912                                 "goto_marked" => __("Starred"),
1913                                 "goto_published" => __("Published"),
1914                                 "goto_tagcloud" => __("Tag cloud"),
1915                                 "goto_prefs" => __("Preferences")),
1916                         __("Other") => array(
1917                                 "create_label" => __("Create label"),
1918                                 "create_filter" => __("Create filter"),
1919                                 "collapse_sidebar" => __("Un/collapse sidebar"),
1920                                 "help_dialog" => __("Show help dialog"))
1921                         );
1922
1923                 return $hotkeys;
1924         }
1925
1926         function get_hotkeys_map($link) {
1927                 $hotkeys = array(
1928 //                      "navigation" => array(
1929                                 "k" => "next_feed",
1930                                 "j" => "prev_feed",
1931                                 "n" => "next_article",
1932                                 "p" => "prev_article",
1933                                 "(38)|up" => "prev_article",
1934                                 "(40)|down" => "next_article",
1935 //                              "^(38)|Ctrl-up" => "prev_article_noscroll",
1936 //                              "^(40)|Ctrl-down" => "next_article_noscroll",
1937                                 "(191)|/" => "search_dialog",
1938 //                      "article" => array(
1939                                 "s" => "toggle_mark",
1940                                 "*s" => "toggle_publ",
1941                                 "u" => "toggle_unread",
1942                                 "*t" => "edit_tags",
1943                                 "*d" => "dismiss_selected",
1944                                 "*x" => "dismiss_read",
1945                                 "o" => "open_in_new_window",
1946                                 "c p" => "catchup_below",
1947                                 "c n" => "catchup_above",
1948                                 "*n" => "article_scroll_down",
1949                                 "*p" => "article_scroll_up",
1950                                 "a *w" => "toggle_widescreen",
1951                                 "e" => "email_article",
1952                                 "a q" => "close_article",
1953 //                      "article_selection" => array(
1954                                 "a a" => "select_all",
1955                                 "a u" => "select_unread",
1956                                 "a *u" => "select_marked",
1957                                 "a p" => "select_published",
1958                                 "a i" => "select_invert",
1959                                 "a n" => "select_none",
1960 //                      "feed" => array(
1961                                 "f r" => "feed_refresh",
1962                                 "f a" => "feed_unhide_read",
1963                                 "f s" => "feed_subscribe",
1964                                 "f e" => "feed_edit",
1965                                 "f q" => "feed_catchup",
1966                                 "f x" => "feed_reverse",
1967                                 "f *d" => "feed_debug_update",
1968                                 "f *c" => "toggle_combined_mode",
1969                                 "*q" => "catchup_all",
1970                                 "x" => "cat_toggle_collapse",
1971 //                      "goto" => array(
1972                                 "g a" => "goto_all",
1973                                 "g f" => "goto_fresh",
1974                                 "g s" => "goto_marked",
1975                                 "g p" => "goto_published",
1976                                 "g t" => "goto_tagcloud",
1977                                 "g *p" => "goto_prefs",
1978 //                      "other" => array(
1979                                 "(9)|Tab" => "select_article_cursor", // tab
1980                                 "c l" => "create_label",
1981                                 "c f" => "create_filter",
1982                                 "c s" => "collapse_sidebar",
1983                                 "^(191)|Ctrl+/" => "help_dialog",
1984                         );
1985
1986                 if (get_pref($link, 'COMBINED_DISPLAY_MODE')) {
1987                         $hotkeys["^(38)|Ctrl-up"] = "prev_article_noscroll";
1988                         $hotkeys["^(40)|Ctrl-down"] = "next_article_noscroll";
1989                 }
1990
1991                 global $pluginhost;
1992                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_HOTKEY_MAP) as $plugin) {
1993                         $hotkeys = $plugin->hook_hotkey_map($hotkeys);
1994                 }
1995
1996                 $prefixes = array();
1997
1998                 foreach (array_keys($hotkeys) as $hotkey) {
1999                         $pair = explode(" ", $hotkey, 2);
2000
2001                         if (count($pair) > 1 && !in_array($pair[0], $prefixes)) {
2002                                 array_push($prefixes, $pair[0]);
2003                         }
2004                 }
2005
2006                 return array($prefixes, $hotkeys);
2007         }
2008
2009         function make_runtime_info($link) {
2010                 $data = array();
2011
2012                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2013                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2014
2015                 $max_feed_id = db_fetch_result($result, 0, "mid");
2016                 $num_feeds = db_fetch_result($result, 0, "nf");
2017
2018                 $data["max_feed_id"] = (int) $max_feed_id;
2019                 $data["num_feeds"] = (int) $num_feeds;
2020
2021                 $data['last_article_id'] = getLastArticleId($link);
2022                 $data['cdm_expanded'] = get_pref($link, 'CDM_EXPANDED');
2023
2024                 if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
2025
2026                         $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
2027
2028                         if (time() - $_SESSION["daemon_stamp_check"] > 30) {
2029
2030                                 $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
2031
2032                                 if ($stamp) {
2033                                         $stamp_delta = time() - $stamp;
2034
2035                                         if ($stamp_delta > 1800) {
2036                                                 $stamp_check = 0;
2037                                         } else {
2038                                                 $stamp_check = 1;
2039                                                 $_SESSION["daemon_stamp_check"] = time();
2040                                         }
2041
2042                                         $data['daemon_stamp_ok'] = $stamp_check;
2043
2044                                         $stamp_fmt = date("Y.m.d, G:i", $stamp);
2045
2046                                         $data['daemon_stamp'] = $stamp_fmt;
2047                                 }
2048                         }
2049                 }
2050
2051                 if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
2052                                 $new_version_details = @check_for_update($link);
2053
2054                                 $data['new_version_available'] = (int) ($new_version_details != false);
2055
2056                                 $_SESSION["last_version_check"] = time();
2057                                 $_SESSION["version_data"] = $new_version_details;
2058                 }
2059
2060                 return $data;
2061         }
2062
2063         function search_to_sql($link, $search, $match_on) {
2064
2065                 $search_query_part = "";
2066
2067                 $keywords = explode(" ", $search);
2068                 $query_keywords = array();
2069
2070                 foreach ($keywords as $k) {
2071                         if (strpos($k, "-") === 0) {
2072                                 $k = substr($k, 1);
2073                                 $not = "NOT";
2074                         } else {
2075                                 $not = "";
2076                         }
2077
2078                         $commandpair = explode(":", mb_strtolower($k), 2);
2079
2080                         if ($commandpair[0] == "note" && $commandpair[1]) {
2081
2082                                 if ($commandpair[1] == "true")
2083                                         array_push($query_keywords, "($not (note IS NOT NULL AND note != ''))");
2084                                 else
2085                                         array_push($query_keywords, "($not (note IS NULL OR note = ''))");
2086
2087                         } else if ($commandpair[0] == "star" && $commandpair[1]) {
2088
2089                                 if ($commandpair[1] == "true")
2090                                         array_push($query_keywords, "($not (marked = true))");
2091                                 else
2092                                         array_push($query_keywords, "($not (marked = false))");
2093
2094                         } else if ($commandpair[0] == "pub" && $commandpair[1]) {
2095
2096                                 if ($commandpair[1] == "true")
2097                                         array_push($query_keywords, "($not (published = true))");
2098                                 else
2099                                         array_push($query_keywords, "($not (published = false))");
2100
2101                         } else if (strpos($k, "@") === 0) {
2102
2103                                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $_SESSION['uid']);
2104                                 $orig_ts = strtotime(substr($k, 1));
2105                                 $k = date("Y-m-d", convert_timestamp($orig_ts, $user_tz_string, 'UTC'));
2106
2107                                 //$k = date("Y-m-d", strtotime(substr($k, 1)));
2108
2109                                 array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
2110                         } else if ($match_on == "both") {
2111                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2112                                                 OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2113                         } else if ($match_on == "title") {
2114                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%'))");
2115                         } else if ($match_on == "content") {
2116                                 array_push($query_keywords, "(UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2117                         }
2118                 }
2119
2120                 $search_query_part = implode("AND", $query_keywords);
2121
2122                 return $search_query_part;
2123         }
2124
2125         function getParentCategories($link, $cat, $owner_uid) {
2126                 $rv = array();
2127
2128                 $result = db_query($link, "SELECT parent_cat FROM ttrss_feed_categories
2129                         WHERE id = '$cat' AND parent_cat IS NOT NULL AND owner_uid = $owner_uid");
2130
2131                 while ($line = db_fetch_assoc($result)) {
2132                         array_push($rv, $line["parent_cat"]);
2133                         $rv = array_merge($rv, getParentCategories($link, $line["parent_cat"], $owner_uid));
2134                 }
2135
2136                 return $rv;
2137         }
2138
2139         function getChildCategories($link, $cat, $owner_uid) {
2140                 $rv = array();
2141
2142                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories
2143                         WHERE parent_cat = '$cat' AND owner_uid = $owner_uid");
2144
2145                 while ($line = db_fetch_assoc($result)) {
2146                         array_push($rv, $line["id"]);
2147                         $rv = array_merge($rv, getChildCategories($link, $line["id"], $owner_uid));
2148                 }
2149
2150                 return $rv;
2151         }
2152
2153         function queryFeedHeadlines($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, $ignore_vfeed_group = false) {
2154
2155                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2156
2157                 $ext_tables_part = "";
2158
2159                         if ($search) {
2160
2161                                 if (SPHINX_ENABLED) {
2162                                         $ids = join(",", @sphinx_search($search, 0, 500));
2163
2164                                         if ($ids)
2165                                                 $search_query_part = "ref_id IN ($ids) AND ";
2166                                         else
2167                                                 $search_query_part = "ref_id = -1 AND ";
2168
2169                                 } else {
2170                                         $search_query_part = search_to_sql($link, $search, $match_on);
2171                                         $search_query_part .= " AND ";
2172                                 }
2173
2174                         } else {
2175                                 $search_query_part = "";
2176                         }
2177
2178                         if ($filter) {
2179
2180                                 if (DB_TYPE == "pgsql") {
2181                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '14 days' ";
2182                                 } else {
2183                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL 14 DAY) ";
2184                                 }
2185
2186                                 $override_order = "updated DESC";
2187
2188                                 $filter_query_part = filter_to_sql($link, $filter, $owner_uid);
2189
2190                                 // Try to check if SQL regexp implementation chokes on a valid regexp
2191                                 $result = db_query($link, "SELECT true AS true_val FROM ttrss_entries,
2192                                         ttrss_user_entries, ttrss_feeds, ttrss_feed_categories
2193                                         WHERE $filter_query_part LIMIT 1", false);
2194
2195                                 if ($result) {
2196                                         $test = db_fetch_result($result, 0, "true_val");
2197
2198                                         if (!$test) {
2199                                                 $filter_query_part = "false AND";
2200                                         } else {
2201                                                 $filter_query_part .= " AND";
2202                                         }
2203                                 } else {
2204                                         $filter_query_part = "false AND";
2205                                 }
2206
2207                         } else {
2208                                 $filter_query_part = "";
2209                         }
2210
2211                         if ($since_id) {
2212                                 $since_id_part = "ttrss_entries.id > $since_id AND ";
2213                         } else {
2214                                 $since_id_part = "";
2215                         }
2216
2217                         $view_query_part = "";
2218
2219                         if ($view_mode == "adaptive" || $view_query_part == "noscores") {
2220                                 if ($search) {
2221                                         $view_query_part = " ";
2222                                 } else if ($feed != -1) {
2223                                         $unread = getFeedUnread($link, $feed, $cat_view);
2224
2225                                         if ($cat_view && $feed > 0 && $include_children)
2226                                                 $unread += getCategoryChildrenUnread($link, $feed);
2227
2228                                         if ($unread > 0) {
2229                                                 $view_query_part = " unread = true AND ";
2230                                         }
2231                                 }
2232                         }
2233
2234                         if ($view_mode == "marked") {
2235                                 $view_query_part = " marked = true AND ";
2236                         }
2237
2238                         if ($view_mode == "published") {
2239                                 $view_query_part = " published = true AND ";
2240                         }
2241
2242                         if ($view_mode == "unread") {
2243                                 $view_query_part = " unread = true AND ";
2244                         }
2245
2246                         if ($view_mode == "updated") {
2247                                 $view_query_part = " (last_read is null and unread = false) AND ";
2248                         }
2249
2250                         if ($limit > 0) {
2251                                 $limit_query_part = "LIMIT " . $limit;
2252                         }
2253
2254                         $allow_archived = false;
2255
2256                         $vfeed_query_part = "";
2257
2258                         // override query strategy and enable feed display when searching globally
2259                         if ($search && $search_mode == "all_feeds") {
2260                                 $query_strategy_part = "true";
2261                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2262                         /* tags */
2263                         } else if (!is_numeric($feed)) {
2264                                 $query_strategy_part = "true";
2265                                 $vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
2266                                         id = feed_id) as feed_title,";
2267                         } else if ($search && $search_mode == "this_cat") {
2268                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2269
2270                                 if ($feed > 0) {
2271                                         if ($include_children) {
2272                                                 $subcats = getChildCategories($link, $feed, $owner_uid);
2273                                                 array_push($subcats, $feed);
2274                                                 $cats_qpart = join(",", $subcats);
2275                                         } else {
2276                                                 $cats_qpart = $feed;
2277                                         }
2278
2279                                         $query_strategy_part = "ttrss_feeds.cat_id IN ($cats_qpart)";
2280
2281                                 } else {
2282                                         $query_strategy_part = "ttrss_feeds.cat_id IS NULL";
2283                                 }
2284
2285                         } else if ($feed > 0) {
2286
2287                                 if ($cat_view) {
2288
2289                                         if ($feed > 0) {
2290                                                 if ($include_children) {
2291                                                         # sub-cats
2292                                                         $subcats = getChildCategories($link, $feed, $owner_uid);
2293
2294                                                         array_push($subcats, $feed);
2295                                                         $query_strategy_part = "cat_id IN (".
2296                                                                         implode(",", $subcats).")";
2297
2298                                                 } else {
2299                                                         $query_strategy_part = "cat_id = '$feed'";
2300                                                 }
2301
2302                                         } else {
2303                                                 $query_strategy_part = "cat_id IS NULL";
2304                                         }
2305
2306                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2307
2308                                 } else {
2309                                         $query_strategy_part = "feed_id = '$feed'";
2310                                 }
2311                         } else if ($feed == 0 && !$cat_view) { // archive virtual feed
2312                                 $query_strategy_part = "feed_id IS NULL";
2313                                 $allow_archived = true;
2314                         } else if ($feed == 0 && $cat_view) { // uncategorized
2315                                 $query_strategy_part = "cat_id IS NULL AND feed_id IS NOT NULL";
2316                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2317                         } else if ($feed == -1) { // starred virtual feed
2318                                 $query_strategy_part = "marked = true";
2319                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2320                                 $allow_archived = true;
2321
2322                                 if (!$override_order) $override_order = "last_marked DESC, updated DESC";
2323
2324                         } else if ($feed == -2) { // published virtual feed OR labels category
2325
2326                                 if (!$cat_view) {
2327                                         $query_strategy_part = "published = true";
2328                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2329                                         $allow_archived = true;
2330
2331                                         if (!$override_order) $override_order = "last_published DESC, updated DESC";
2332                                 } else {
2333                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2334
2335                                         $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2336
2337                                         $query_strategy_part = "ttrss_labels2.id = ttrss_user_labels2.label_id AND
2338                                                 ttrss_user_labels2.article_id = ref_id";
2339
2340                                 }
2341                         } else if ($feed == -6) { // recently read
2342                                 $query_strategy_part = "unread = false AND last_read IS NOT NULL";
2343                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2344                                 $allow_archived = true;
2345
2346                                 if (!$override_order) $override_order = "last_read DESC";
2347                         } else if ($feed == -3) { // fresh virtual feed
2348                                 $query_strategy_part = "unread = true AND score >= 0";
2349
2350                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
2351
2352                                 if (DB_TYPE == "pgsql") {
2353                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
2354                                 } else {
2355                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
2356                                 }
2357
2358                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2359                         } else if ($feed == -4) { // all articles virtual feed
2360                                 $query_strategy_part = "true";
2361                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2362                         } else if ($feed <= -10) { // labels
2363                                 $label_id = -$feed - 11;
2364
2365                                 $query_strategy_part = "label_id = '$label_id' AND
2366                                         ttrss_labels2.id = ttrss_user_labels2.label_id AND
2367                                         ttrss_user_labels2.article_id = ref_id";
2368
2369                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2370                                 $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2371                                 $allow_archived = true;
2372
2373                         } else {
2374                                 $query_strategy_part = "true";
2375                         }
2376
2377                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
2378                                 $date_sort_field = "updated";
2379                         } else {
2380                                 $date_sort_field = "date_entered";
2381                         }
2382
2383                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
2384                                 $order_by = "$date_sort_field";
2385                         } else {
2386                                 $order_by = "$date_sort_field DESC";
2387                         }
2388
2389                         if ($view_mode != "noscores") {
2390                                 $order_by = "score DESC, $order_by";
2391                         }
2392
2393                         if ($override_order) {
2394                                 $order_by = $override_order;
2395                         }
2396
2397                         $feed_title = "";
2398
2399                         if ($search) {
2400                                 $feed_title = T_sprintf("Search results: %s", $search);
2401                         } else {
2402                                 if ($cat_view) {
2403                                         $feed_title = getCategoryTitle($link, $feed);
2404                                 } else {
2405                                         if (is_numeric($feed) && $feed > 0) {
2406                                                 $result = db_query($link, "SELECT title,site_url,last_error
2407                                                         FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = $owner_uid");
2408
2409                                                 $feed_title = db_fetch_result($result, 0, "title");
2410                                                 $feed_site_url = db_fetch_result($result, 0, "site_url");
2411                                                 $last_error = db_fetch_result($result, 0, "last_error");
2412                                         } else {
2413                                                 $feed_title = getFeedTitle($link, $feed);
2414                                         }
2415                                 }
2416                         }
2417
2418                         $content_query_part = "content as content_preview, cached_content, ";
2419
2420                         if (is_numeric($feed)) {
2421
2422                                 if ($feed >= 0) {
2423                                         $feed_kind = "Feeds";
2424                                 } else {
2425                                         $feed_kind = "Labels";
2426                                 }
2427
2428                                 if ($limit_query_part) {
2429                                         $offset_query_part = "OFFSET $offset";
2430                                 }
2431
2432                                 // proper override_order applied above
2433                                 if ($vfeed_query_part && !$ignore_vfeed_group && get_pref($link, 'VFEED_GROUP_BY_FEED', $owner_uid)) {
2434                                         if (!$override_order) {
2435                                                 $order_by = "ttrss_feeds.title, $order_by";
2436                                         } else {
2437                                                 $order_by = "ttrss_feeds.title, $override_order";
2438                                         }
2439                                 }
2440
2441                                 if (!$allow_archived) {
2442                                         $from_qpart = "ttrss_entries,ttrss_user_entries,ttrss_feeds$ext_tables_part";
2443                                         $feed_check_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
2444
2445                                 } else {
2446                                         $from_qpart = "ttrss_entries$ext_tables_part,ttrss_user_entries
2447                                                 LEFT JOIN ttrss_feeds ON (feed_id = ttrss_feeds.id)";
2448                                 }
2449
2450                                 $query = "SELECT DISTINCT
2451                                                 date_entered,
2452                                                 guid,
2453                                                 ttrss_entries.id,ttrss_entries.title,
2454                                                 updated,
2455                                                 label_cache,
2456                                                 tag_cache,
2457                                                 always_display_enclosures,
2458                                                 site_url,
2459                                                 note,
2460                                                 num_comments,
2461                                                 comments,
2462                                                 int_id,
2463                                                 unread,feed_id,marked,published,link,last_read,orig_feed_id,
2464                                                 last_marked, last_published,
2465                                                 ".SUBSTRING_FOR_DATE."(last_read,1,19) as last_read_noms,
2466                                                 $vfeed_query_part
2467                                                 $content_query_part
2468                                                 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated_noms,
2469                                                 author,score
2470                                         FROM
2471                                                 $from_qpart
2472                                         WHERE
2473                                         $feed_check_qpart
2474                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
2475                                         ttrss_user_entries.owner_uid = '$owner_uid' AND
2476                                         $search_query_part
2477                                         $filter_query_part
2478                                         $view_query_part
2479                                         $since_id_part
2480                                         $query_strategy_part ORDER BY $order_by
2481                                         $limit_query_part $offset_query_part";
2482
2483                                 if ($_REQUEST["debug"]) print $query;
2484
2485                                 $result = db_query($link, $query);
2486
2487                         } else {
2488                                 // browsing by tag
2489
2490                                 $select_qpart = "SELECT DISTINCT " .
2491                                                                 "date_entered," .
2492                                                                 "guid," .
2493                                                                 "note," .
2494                                                                 "ttrss_entries.id as id," .
2495                                                                 "title," .
2496                                                                 "updated," .
2497                                                                 "unread," .
2498                                                                 "feed_id," .
2499                                                                 "orig_feed_id," .
2500                                                                 "marked," .
2501                                                                 "num_comments, " .
2502                                                                 "comments, " .
2503                                                                 "tag_cache," .
2504                                                                 "label_cache," .
2505                                                                 "link," .
2506                                                                 "last_read," .
2507                                                                 "last_marked, last_published, " .
2508                                                                 SUBSTRING_FOR_DATE . "(last_read,1,19) as last_read_noms," .
2509                                                                 $since_id_part .
2510                                                                 $vfeed_query_part .
2511                                                                 $content_query_part .
2512                                                                 SUBSTRING_FOR_DATE . "(updated,1,19) as updated_noms," .
2513                                                                 "score ";
2514
2515                                 $feed_kind = "Tags";
2516                                 $all_tags = explode(",", $feed);
2517                                 if ($search_mode == 'any') {
2518                                         $tag_sql = "tag_name in (" . implode(", ", array_map("db_quote", $all_tags)) . ")";
2519                                         $from_qpart = " FROM ttrss_entries,ttrss_user_entries,ttrss_tags ";
2520                                         $where_qpart = " WHERE " .
2521                                                                    "ref_id = ttrss_entries.id AND " .
2522                                                                    "ttrss_user_entries.owner_uid = $owner_uid AND " .
2523                                                                    "post_int_id = int_id AND $tag_sql AND " .
2524                                                                    $view_query_part .
2525                                                                    $search_query_part .
2526                                                                    $query_strategy_part . " ORDER BY $order_by " .
2527                                                                    $limit_query_part;
2528
2529                                 } else {
2530                                         $i = 1;
2531                                         $sub_selects = array();
2532                                         $sub_ands = array();
2533                                         foreach ($all_tags as $term) {
2534                                                 array_push($sub_selects, "(SELECT post_int_id from ttrss_tags WHERE tag_name = " . db_quote($term) . " AND owner_uid = $owner_uid) as A$i");
2535                                                 $i++;
2536                                         }
2537                                         if ($i > 2) {
2538                                                 $x = 1;
2539                                                 $y = 2;
2540                                                 do {
2541                                                         array_push($sub_ands, "A$x.post_int_id = A$y.post_int_id");
2542                                                         $x++;
2543                                                         $y++;
2544                                                 } while ($y < $i);
2545                                         }
2546                                         array_push($sub_ands, "A1.post_int_id = ttrss_user_entries.int_id and ttrss_user_entries.owner_uid = $owner_uid");
2547                                         array_push($sub_ands, "ttrss_user_entries.ref_id = ttrss_entries.id");
2548                                         $from_qpart = " FROM " . implode(", ", $sub_selects) . ", ttrss_user_entries, ttrss_entries";
2549                                         $where_qpart = " WHERE " . implode(" AND ", $sub_ands);
2550                                 }
2551                                 //                              error_log("TAG SQL: " . $tag_sql);
2552                                 // $tag_sql = "tag_name = '$feed'";   DEFAULT way
2553
2554                                 //                              error_log("[". $select_qpart . "][" . $from_qpart . "][" .$where_qpart . "]");
2555                                 $result = db_query($link, $select_qpart . $from_qpart . $where_qpart);
2556                         }
2557
2558                         return array($result, $feed_title, $feed_site_url, $last_error);
2559
2560         }
2561
2562         function sanitize($link, $str, $force_strip_tags = false, $owner = false, $site_url = false) {
2563                 if (!$owner) $owner = $_SESSION["uid"];
2564
2565                 $res = trim($str); if (!$res) return '';
2566
2567                 if (get_pref($link, "STRIP_IMAGES", $owner)) {
2568                         $res = preg_replace('/<img[^>]+>/is', '', $res);
2569                 }
2570
2571                 if (strpos($res, "href=") === false)
2572                         $res = rewrite_urls($res);
2573
2574                 $charset_hack = '<head>
2575                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
2576                 </head>';
2577
2578                 $res = trim($res); if (!$res) return '';
2579
2580                 libxml_use_internal_errors(true);
2581
2582                 $doc = new DOMDocument();
2583                 $doc->loadHTML($charset_hack . $res);
2584                 $xpath = new DOMXPath($doc);
2585
2586                 $entries = $xpath->query('(//a[@href]|//img[@src])');
2587
2588                 foreach ($entries as $entry) {
2589
2590                         if ($site_url) {
2591
2592                                 if ($entry->hasAttribute('href'))
2593                                         $entry->setAttribute('href',
2594                                                 rewrite_relative_url($site_url, $entry->getAttribute('href')));
2595
2596                                 if ($entry->hasAttribute('src')) {
2597                                         $src = rewrite_relative_url($site_url, $entry->getAttribute('src'));
2598
2599                                         $cached_filename = CACHE_DIR . '/images/' . sha1($src) . '.png';
2600
2601                                         if (file_exists($cached_filename)) {
2602                                                 $src = SELF_URL_PATH . '/image.php?hash=' . sha1($src);
2603                                         }
2604
2605                                         $entry->setAttribute('src', $src);
2606                                 }
2607                         }
2608
2609                         if (strtolower($entry->nodeName) == "a") {
2610                                 $entry->setAttribute("target", "_blank");
2611                         }
2612                 }
2613
2614                 $entries = $xpath->query('//iframe');
2615                 foreach ($entries as $entry) {
2616                         $entry->setAttribute('sandbox', true);
2617                 }
2618
2619                 $doc->removeChild($doc->firstChild); //remove doctype
2620                 $doc = strip_harmful_tags($doc);
2621                 $res = $doc->saveHTML();
2622                 return $res;
2623         }
2624
2625         function strip_harmful_tags($doc) {
2626                 $entries = $doc->getElementsByTagName("*");
2627
2628                 $allowed_elements = array('p', 'br', 'div', 'table', 'tr', 'td', 'th',
2629                         'ul', 'ol', 'li', 'blockquote', 'span', 'html', 'body', 'a', 'img',
2630                         'iframe', 'video', 'audio', 'source');
2631
2632                 $disallowed_attributes = array('id', 'style', 'class');
2633
2634                 foreach ($entries as $entry) {
2635                         if (!in_array($entry->nodeName, $allowed_elements)) {
2636                                 $entry->parentNode->removeChild($entry);
2637                         }
2638
2639                         if ($entry->hasAttributes()) {
2640                                 foreach (iterator_to_array($entry->attributes) as $attr) {
2641
2642                                         if (strpos($attr->nodeName, 'on') === 0) {
2643                                                 $entry->removeAttributeNode($attr);
2644                                         }
2645
2646                                         if (in_array($attr->nodeName, $disallowed_attributes)) {
2647                                                 $entry->removeAttributeNode($attr);
2648                                         }
2649                                 }
2650                         }
2651                 }
2652
2653                 return $doc;
2654         }
2655
2656         function check_for_update($link) {
2657                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2658                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION .
2659                                 "&iid=" . sha1(SELF_URL_PATH);
2660
2661                         $version_data = @fetch_file_contents($version_url);
2662
2663                         if ($version_data) {
2664                                 $version_data = json_decode($version_data, true);
2665                                 if ($version_data && $version_data['version']) {
2666
2667                                         if (version_compare(VERSION, $version_data['version']) == -1) {
2668                                                 return $version_data;
2669                                         }
2670                                 }
2671                         }
2672                 }
2673                 return false;
2674         }
2675
2676         function catchupArticlesById($link, $ids, $cmode, $owner_uid = false) {
2677
2678                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2679                 if (count($ids) == 0) return;
2680
2681                 $tmp_ids = array();
2682
2683                 foreach ($ids as $id) {
2684                         array_push($tmp_ids, "ref_id = '$id'");
2685                 }
2686
2687                 $ids_qpart = join(" OR ", $tmp_ids);
2688
2689                 if ($cmode == 0) {
2690                         db_query($link, "UPDATE ttrss_user_entries SET
2691                         unread = false,last_read = NOW()
2692                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2693                 } else if ($cmode == 1) {
2694                         db_query($link, "UPDATE ttrss_user_entries SET
2695                         unread = true
2696                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2697                 } else {
2698                         db_query($link, "UPDATE ttrss_user_entries SET
2699                         unread = NOT unread,last_read = NOW()
2700                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2701                 }
2702
2703                 /* update ccache */
2704
2705                 $result = db_query($link, "SELECT DISTINCT feed_id FROM ttrss_user_entries
2706                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2707
2708                 while ($line = db_fetch_assoc($result)) {
2709                         ccache_update($link, $line["feed_id"], $owner_uid);
2710                 }
2711         }
2712
2713         function get_article_tags($link, $id, $owner_uid = 0, $tag_cache = false) {
2714
2715                 $a_id = db_escape_string($id);
2716
2717                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2718
2719                 $query = "SELECT DISTINCT tag_name,
2720                         owner_uid as owner FROM
2721                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
2722                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
2723
2724                 $obj_id = md5("TAGS:$owner_uid:$id");
2725                 $tags = array();
2726
2727                 /* check cache first */
2728
2729                 if ($tag_cache === false) {
2730                         $result = db_query($link, "SELECT tag_cache FROM ttrss_user_entries
2731                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2732
2733                         $tag_cache = db_fetch_result($result, 0, "tag_cache");
2734                 }
2735
2736                 if ($tag_cache) {
2737                         $tags = explode(",", $tag_cache);
2738                 } else {
2739
2740                         /* do it the hard way */
2741
2742                         $tmp_result = db_query($link, $query);
2743
2744                         while ($tmp_line = db_fetch_assoc($tmp_result)) {
2745                                 array_push($tags, $tmp_line["tag_name"]);
2746                         }
2747
2748                         /* update the cache */
2749
2750                         $tags_str = db_escape_string(join(",", $tags));
2751
2752                         db_query($link, "UPDATE ttrss_user_entries
2753                                 SET tag_cache = '$tags_str' WHERE ref_id = '$id'
2754                                 AND owner_uid = $owner_uid");
2755                 }
2756
2757                 return $tags;
2758         }
2759
2760         function trim_array($array) {
2761                 $tmp = $array;
2762                 array_walk($tmp, 'trim');
2763                 return $tmp;
2764         }
2765
2766         function tag_is_valid($tag) {
2767                 if ($tag == '') return false;
2768                 if (preg_match("/^[0-9]*$/", $tag)) return false;
2769                 if (mb_strlen($tag) > 250) return false;
2770
2771                 if (function_exists('iconv')) {
2772                         $tag = iconv("utf-8", "utf-8", $tag);
2773                 }
2774
2775                 if (!$tag) return false;
2776
2777                 return true;
2778         }
2779
2780         function render_login_form($link, $form_id = 0) {
2781                 switch ($form_id) {
2782                 case 0:
2783                         require_once "login_form.php";
2784                         break;
2785                 case 1:
2786                         require_once "mobile/login_form.php";
2787                         break;
2788                 }
2789                 exit;
2790         }
2791
2792         // from http://developer.apple.com/internet/safari/faq.html
2793         function no_cache_incantation() {
2794                 header("Expires: Mon, 22 Dec 1980 00:00:00 GMT"); // Happy birthday to me :)
2795                 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
2796                 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); // HTTP/1.1
2797                 header("Cache-Control: post-check=0, pre-check=0", false);
2798                 header("Pragma: no-cache"); // HTTP/1.0
2799         }
2800
2801         function format_warning($msg, $id = "") {
2802                 global $link;
2803                 return "<div class=\"warning\" id=\"$id\">
2804                         <img src=\"".theme_image($link, "images/sign_excl.svg")."\">$msg</div>";
2805         }
2806
2807         function format_notice($msg, $id = "") {
2808                 global $link;
2809                 return "<div class=\"notice\" id=\"$id\">
2810                         <img src=\"".theme_image($link, "images/sign_info.svg")."\">$msg</div>";
2811         }
2812
2813         function format_error($msg, $id = "") {
2814                 global $link;
2815                 return "<div class=\"error\" id=\"$id\">
2816                         <img src=\"".theme_image($link, "images/sign_excl.svg")."\">$msg</div>";
2817         }
2818
2819         function print_notice($msg) {
2820                 return print format_notice($msg);
2821         }
2822
2823         function print_warning($msg) {
2824                 return print format_warning($msg);
2825         }
2826
2827         function print_error($msg) {
2828                 return print format_error($msg);
2829         }
2830
2831
2832         function T_sprintf() {
2833                 $args = func_get_args();
2834                 return vsprintf(__(array_shift($args)), $args);
2835         }
2836
2837         function format_inline_player($link, $url, $ctype) {
2838
2839                 $entry = "";
2840
2841                 if (strpos($ctype, "audio/") === 0) {
2842
2843                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
2844                                 strpos($_SERVER['HTTP_USER_AGENT'], "Chrome") !== false ||
2845                                 strpos($_SERVER['HTTP_USER_AGENT'], "Safari") !== false )) {
2846
2847                                 $id = 'AUDIO-' . uniqid();
2848
2849                                 $entry .= "<audio id=\"$id\"\" controls style='display : none'>
2850                                         <source type=\"$ctype\" src=\"$url\"></source>
2851                                         </audio>";
2852
2853                                 $entry .= "<span onclick=\"player(this)\"
2854                                         title=\"".__("Click to play")."\" status=\"0\"
2855                                         class=\"player\" audio-id=\"$id\">".__("Play")."</span>";
2856
2857                         } else {
2858
2859                                 $entry .= "<object type=\"application/x-shockwave-flash\"
2860                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
2861                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
2862                                         <param name=\"movie\"
2863                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
2864                                         </object>";
2865                         }
2866
2867                         if ($entry) $entry .= "&nbsp;" . basename($url);
2868
2869                         return $entry;
2870
2871                 }
2872
2873                 return "";
2874
2875 /*              $filename = substr($url, strrpos($url, "/")+1);
2876
2877                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
2878                         $filename . " (" . $ctype . ")" . "</a>"; */
2879
2880         }
2881
2882         function format_article($link, $id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
2883                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2884
2885                 $rv = array();
2886
2887                 $rv['id'] = $id;
2888
2889                 /* we can figure out feed_id from article id anyway, why do we
2890                  * pass feed_id here? let's ignore the argument :( */
2891
2892                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
2893                         WHERE ref_id = '$id'");
2894
2895                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
2896
2897                 $rv['feed_id'] = $feed_id;
2898
2899                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
2900
2901                 if ($mark_as_read) {
2902                         $result = db_query($link, "UPDATE ttrss_user_entries
2903                                 SET unread = false,last_read = NOW()
2904                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2905
2906                         ccache_update($link, $feed_id, $owner_uid);
2907                 }
2908
2909                 $result = db_query($link, "SELECT id,title,link,content,feed_id,comments,int_id,
2910                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
2911                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
2912                         num_comments,
2913                         tag_cache,
2914                         author,
2915                         orig_feed_id,
2916                         note,
2917                         cached_content
2918                         FROM ttrss_entries,ttrss_user_entries
2919                         WHERE   id = '$id' AND ref_id = id AND owner_uid = $owner_uid");
2920
2921                 if ($result) {
2922
2923                         $line = db_fetch_assoc($result);
2924
2925                         $tag_cache = $line["tag_cache"];
2926
2927                         $line["tags"] = get_article_tags($link, $id, $owner_uid, $line["tag_cache"]);
2928                         unset($line["tag_cache"]);
2929
2930                         $line["content"] = sanitize($link, $line["content"], false, $owner_uid, $line["site_url"]);
2931
2932                         global $pluginhost;
2933
2934                         foreach ($pluginhost->get_hooks($pluginhost::HOOK_RENDER_ARTICLE) as $p) {
2935                                 $line = $p->hook_render_article($line);
2936                         }
2937
2938                         $num_comments = $line["num_comments"];
2939                         $entry_comments = "";
2940
2941                         if ($num_comments > 0) {
2942                                 if ($line["comments"]) {
2943                                         $comments_url = htmlspecialchars($line["comments"]);
2944                                 } else {
2945                                         $comments_url = htmlspecialchars($line["link"]);
2946                                 }
2947                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
2948                         } else {
2949                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
2950                                         $entry_comments = "<a target='_blank' href=\"".htmlspecialchars($line["comments"])."\">comments</a>";
2951                                 }
2952                         }
2953
2954                         if ($zoom_mode) {
2955                                 header("Content-Type: text/html");
2956                                 $rv['content'] .= "<html><head>
2957                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
2958                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
2959                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
2960                                         </head><body>";
2961                         }
2962
2963                         $title_escaped = htmlspecialchars($line['title']);
2964
2965                         $rv['content'] .= "<div id=\"PTITLE-FULL-$id\" style=\"display : none\">" .
2966                                 strip_tags($line['title']) . "</div>";
2967
2968                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
2969
2970                         $rv['content'] .= "<div class=\"postHeader\" id=\"POSTHDR-$id\">";
2971
2972                         $entry_author = $line["author"];
2973
2974                         if ($entry_author) {
2975                                 $entry_author = __(" - ") . $entry_author;
2976                         }
2977
2978                         $parsed_updated = make_local_datetime($link, $line["updated"], true,
2979                                 $owner_uid, true);
2980
2981                         $rv['content'] .= "<div class=\"postDate\">$parsed_updated</div>";
2982
2983                         if ($line["link"]) {
2984                                 $rv['content'] .= "<div class='postTitle'><a target='_blank'
2985                                         title=\"".htmlspecialchars($line['title'])."\"
2986                                         href=\"" .
2987                                         htmlspecialchars($line["link"]) . "\">" .
2988                                         $line["title"] .
2989                                         "<span class='author'>$entry_author</span></a></div>";
2990                         } else {
2991                                 $rv['content'] .= "<div class='postTitle'>" . $line["title"] . "$entry_author</div>";
2992                         }
2993
2994                         $tags_str = format_tags_string($line["tags"], $id);
2995                         $tags_str_full = join(", ", $line["tags"]);
2996
2997                         if (!$tags_str_full) $tags_str_full = __("no tags");
2998
2999                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
3000
3001                         $rv['content'] .= "<div class='postTags' style='float : right'>
3002                                 <img src='".theme_image($link, 'images/tag.png')."'
3003                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
3004
3005                         if (!$zoom_mode) {
3006                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
3007                                         <a title=\"".__('Edit tags for this article')."\"
3008                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
3009
3010                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
3011                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
3012                                         position=\"below\">$tags_str_full</div>";
3013
3014                                 global $pluginhost;
3015
3016                                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_ARTICLE_BUTTON) as $p) {
3017                                         $rv['content'] .= $p->hook_article_button($line);
3018                                 }
3019
3020
3021                         } else {
3022                                 $tags_str = strip_tags($tags_str);
3023                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
3024                         }
3025                         $rv['content'] .= "</div>";
3026                         $rv['content'] .= "<div clear='both'>$entry_comments</div>";
3027
3028                         if ($line["orig_feed_id"]) {
3029
3030                                 $tmp_result = db_query($link, "SELECT * FROM ttrss_archived_feeds
3031                                         WHERE id = ".$line["orig_feed_id"]);
3032
3033                                 if (db_num_rows($tmp_result) != 0) {
3034
3035                                         $rv['content'] .= "<div clear='both'>";
3036                                         $rv['content'] .= __("Originally from:");
3037
3038                                         $rv['content'] .= "&nbsp;";
3039
3040                                         $tmp_line = db_fetch_assoc($tmp_result);
3041
3042                                         $rv['content'] .= "<a target='_blank'
3043                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
3044                                                 $tmp_line['title'] . "</a>";
3045
3046                                         $rv['content'] .= "&nbsp;";
3047
3048                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3049                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.svg'></a>";
3050
3051                                         $rv['content'] .= "</div>";
3052                                 }
3053                         }
3054
3055                         $rv['content'] .= "</div>";
3056
3057                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3058                                 if ($line['note']) {
3059                                         $rv['content'] .= format_article_note($id, $line['note'], !$zoom_mode);
3060                                 }
3061                         $rv['content'] .= "</div>";
3062
3063                         $rv['content'] .= "<div class=\"postContent\">";
3064
3065                         // N-grams
3066
3067                         if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_RELATED_THRESHOLD')) {
3068
3069                                 $ngram_result = db_query($link, "SELECT id,title FROM
3070                                                 ttrss_entries,ttrss_user_entries
3071                                         WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
3072                                                 AND similarity(title, '$title_escaped') >= "._NGRAM_TITLE_RELATED_THRESHOLD."
3073                                                 AND title != '$title_escaped'
3074                                                 AND owner_uid = $owner_uid");
3075
3076                                 if (db_num_rows($ngram_result) > 0) {
3077                                         $rv['content'] .= "<div dojoType=\"dijit.form.DropDownButton\">".
3078                                                 "<span>" . __('Related')."</span>";
3079                                         $rv['content'] .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3080
3081                                         while ($nline = db_fetch_assoc($ngram_result)) {
3082                                                 $rv['content'] .= "<div onclick=\"hlOpenInNewTab(null,".$nline['id'].")\"
3083                                                         dojoType=\"dijit.MenuItem\">".$nline['title']."</div>";
3084
3085                                         }
3086                                         $rv['content'] .= "</div></div><br/";
3087                                 }
3088                         }
3089
3090                         $rv['content'] .= $line["content"];
3091
3092                         $rv['content'] .= format_article_enclosures($link, $id,
3093                                 $always_display_enclosures, $line["content"]);
3094
3095                         $rv['content'] .= "</div>";
3096
3097                         $rv['content'] .= "</div>";
3098
3099                 }
3100
3101                 if ($zoom_mode) {
3102                         $rv['content'] .= "
3103                                 <div style=\"text-align : center\">
3104                                 <button onclick=\"return window.close()\">".
3105                                         __("Close this window")."</button></div>";
3106                         $rv['content'] .= "</body></html>";
3107                 }
3108
3109                 return $rv;
3110
3111         }
3112
3113         function print_checkpoint($n, $s) {
3114                 $ts = microtime(true);
3115                 echo sprintf("<!-- CP[$n] %.4f seconds -->", $ts - $s);
3116                 return $ts;
3117         }
3118
3119         function sanitize_tag($tag) {
3120                 $tag = trim($tag);
3121
3122                 $tag = mb_strtolower($tag, 'utf-8');
3123
3124                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3125
3126 //              $tag = str_replace('"', "", $tag);
3127 //              $tag = str_replace("+", " ", $tag);
3128                 $tag = str_replace("technorati tag: ", "", $tag);
3129
3130                 return $tag;
3131         }
3132
3133         function get_self_url_prefix() {
3134                 if (strrpos(SELF_URL_PATH, "/") === strlen(SELF_URL_PATH)-1) {
3135                         return substr(SELF_URL_PATH, 0, strlen(SELF_URL_PATH)-1);
3136                 } else {
3137                         return SELF_URL_PATH;
3138                 }
3139         }
3140
3141         /**
3142          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3143          *
3144          * @return string The Mozilla Firefox feed adding URL.
3145          */
3146         function add_feed_url() {
3147                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3148
3149                 $url_path = get_self_url_prefix() .
3150                         "/public.php?op=subscribe&feed_url=%s";
3151                 return $url_path;
3152         } // function add_feed_url
3153
3154         function encrypt_password($pass, $salt = '', $mode2 = false) {
3155                 if ($salt && $mode2) {
3156                         return "MODE2:" . hash('sha256', $salt . $pass);
3157                 } else if ($salt) {
3158                         return "SHA1X:" . sha1("$salt:$pass");
3159                 } else {
3160                         return "SHA1:" . sha1($pass);
3161                 }
3162         } // function encrypt_password
3163
3164         function load_filters($link, $feed_id, $owner_uid, $action_id = false) {
3165                 $filters = array();
3166
3167                 $cat_id = (int)getFeedCategory($link, $feed_id);
3168
3169                 $result = db_query($link, "SELECT * FROM ttrss_filters2 WHERE
3170                         owner_uid = $owner_uid AND enabled = true");
3171
3172                 $check_cats = join(",", array_merge(
3173                         getParentCategories($link, $cat_id, $owner_uid),
3174                         array($cat_id)));
3175
3176                 while ($line = db_fetch_assoc($result)) {
3177                         $filter_id = $line["id"];
3178
3179                         $result2 = db_query($link, "SELECT
3180                                 r.reg_exp, r.feed_id, r.cat_id, r.cat_filter, t.name AS type_name
3181                                 FROM ttrss_filters2_rules AS r,
3182                                 ttrss_filter_types AS t
3183                                 WHERE
3184                                         (cat_id IS NULL OR cat_id IN ($check_cats)) AND
3185                                         (feed_id IS NULL OR feed_id = '$feed_id') AND
3186                                         filter_type = t.id AND filter_id = '$filter_id'");
3187
3188                         $rules = array();
3189                         $actions = array();
3190
3191                         while ($rule_line = db_fetch_assoc($result2)) {
3192 #                               print_r($rule_line);
3193
3194                                 $rule = array();
3195                                 $rule["reg_exp"] = $rule_line["reg_exp"];
3196                                 $rule["type"] = $rule_line["type_name"];
3197
3198                                 array_push($rules, $rule);
3199                         }
3200
3201                         $result2 = db_query($link, "SELECT a.action_param,t.name AS type_name
3202                                 FROM ttrss_filters2_actions AS a,
3203                                 ttrss_filter_actions AS t
3204                                 WHERE
3205                                         action_id = t.id AND filter_id = '$filter_id'");
3206
3207                         while ($action_line = db_fetch_assoc($result2)) {
3208 #                               print_r($action_line);
3209
3210                                 $action = array();
3211                                 $action["type"] = $action_line["type_name"];
3212                                 $action["param"] = $action_line["action_param"];
3213
3214                                 array_push($actions, $action);
3215                         }
3216
3217
3218                         $filter = array();
3219                         $filter["match_any_rule"] = sql_bool_to_bool($line["match_any_rule"]);
3220                         $filter["rules"] = $rules;
3221                         $filter["actions"] = $actions;
3222
3223                         if (count($rules) > 0 && count($actions) > 0) {
3224                                 array_push($filters, $filter);
3225                         }
3226                 }
3227
3228                 return $filters;
3229         }
3230
3231         function get_score_pic($score) {
3232                 if ($score > 100) {
3233                         return "score_high.png";
3234                 } else if ($score > 0) {
3235                         return "score_half_high.png";
3236                 } else if ($score < -100) {
3237                         return "score_low.png";
3238                 } else if ($score < 0) {
3239                         return "score_half_low.png";
3240                 } else {
3241                         return "score_neutral.png";
3242                 }
3243         }
3244
3245         function feed_has_icon($id) {
3246                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3247         }
3248
3249         function init_connection($link) {
3250                 if ($link) {
3251
3252                         if (DB_TYPE == "pgsql") {
3253                                 pg_query($link, "set client_encoding = 'UTF-8'");
3254                                 pg_set_client_encoding("UNICODE");
3255                                 pg_query($link, "set datestyle = 'ISO, european'");
3256                                 pg_query($link, "set TIME ZONE 0");
3257                         } else {
3258                                 db_query($link, "SET time_zone = '+0:0'");
3259
3260                                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
3261                                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
3262                                 }
3263                         }
3264
3265                         global $pluginhost;
3266
3267                         $pluginhost = new PluginHost($link);
3268                         $pluginhost->load(PLUGINS, $pluginhost::KIND_ALL);
3269
3270                         return true;
3271                 } else {
3272                         print "Unable to connect to database:" . db_last_error();
3273                         return false;
3274                 }
3275         }
3276
3277         function format_tags_string($tags, $id) {
3278
3279                 $tags_str = "";
3280                 $tags_nolinks_str = "";
3281
3282                 $num_tags = 0;
3283
3284                 $tag_limit = 6;
3285
3286                 $formatted_tags = array();
3287
3288                 foreach ($tags as $tag) {
3289                         $num_tags++;
3290                         $tag_escaped = str_replace("'", "\\'", $tag);
3291
3292                         if (mb_strlen($tag) > 30) {
3293                                 $tag = truncate_string($tag, 30);
3294                         }
3295
3296                         $tag_str = "<a href=\"javascript:viewfeed('$tag_escaped')\">$tag</a>";
3297
3298                         array_push($formatted_tags, $tag_str);
3299
3300                         $tmp_tags_str = implode(", ", $formatted_tags);
3301
3302                         if ($num_tags == $tag_limit || mb_strlen($tmp_tags_str) > 150) {
3303                                 break;
3304                         }
3305                 }
3306
3307                 $tags_str = implode(", ", $formatted_tags);
3308
3309                 if ($num_tags < count($tags)) {
3310                         $tags_str .= ", &hellip;";
3311                 }
3312
3313                 if ($num_tags == 0) {
3314                         $tags_str = __("no tags");
3315                 }
3316
3317                 return $tags_str;
3318
3319         }
3320
3321         function format_article_labels($labels, $id) {
3322
3323                 $labels_str = "";
3324
3325                 foreach ($labels as $l) {
3326                         $labels_str .= sprintf("<span class='hlLabelRef'
3327                                 style='color : %s; background-color : %s'>%s</span>",
3328                                         $l[2], $l[3], $l[1]);
3329                         }
3330
3331                 return $labels_str;
3332
3333         }
3334
3335         function format_article_note($id, $note, $allow_edit = true) {
3336
3337                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
3338                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
3339                         ($allow_edit ? __('(edit note)') : "")."</div>$note</div>";
3340
3341                 return $str;
3342         }
3343
3344
3345         function get_feed_category($link, $feed_cat, $parent_cat_id = false) {
3346                 if ($parent_cat_id) {
3347                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3348                         $parent_insert = "'$parent_cat_id'";
3349                 } else {
3350                         $parent_qpart = "parent_cat IS NULL";
3351                         $parent_insert = "NULL";
3352                 }
3353
3354                 $result = db_query($link,
3355                         "SELECT id FROM ttrss_feed_categories
3356                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3357
3358                 if (db_num_rows($result) == 0) {
3359                         return false;
3360                 } else {
3361                         return db_fetch_result($result, 0, "id");
3362                 }
3363         }
3364
3365         function add_feed_category($link, $feed_cat, $parent_cat_id = false) {
3366
3367                 if (!$feed_cat) return false;
3368
3369                 db_query($link, "BEGIN");
3370
3371                 if ($parent_cat_id) {
3372                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3373                         $parent_insert = "'$parent_cat_id'";
3374                 } else {
3375                         $parent_qpart = "parent_cat IS NULL";
3376                         $parent_insert = "NULL";
3377                 }
3378
3379                 $result = db_query($link,
3380                         "SELECT id FROM ttrss_feed_categories
3381                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3382
3383                 if (db_num_rows($result) == 0) {
3384
3385                         $result = db_query($link,
3386                                 "INSERT INTO ttrss_feed_categories (owner_uid,title,parent_cat)
3387                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat', $parent_insert)");
3388
3389                         db_query($link, "COMMIT");
3390
3391                         return true;
3392                 }
3393
3394                 return false;
3395         }
3396
3397         function getArticleFeed($link, $id) {
3398                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3399                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3400
3401                 if (db_num_rows($result) != 0) {
3402                         return db_fetch_result($result, 0, "feed_id");
3403                 } else {
3404                         return 0;
3405                 }
3406         }
3407
3408         /**
3409          * Fixes incomplete URLs by prepending "http://".
3410          * Also replaces feed:// with http://, and
3411          * prepends a trailing slash if the url is a domain name only.
3412          *
3413          * @param string $url Possibly incomplete URL
3414          *
3415          * @return string Fixed URL.
3416          */
3417         function fix_url($url) {
3418                 if (strpos($url, '://') === false) {
3419                         $url = 'http://' . $url;
3420                 } else if (substr($url, 0, 5) == 'feed:') {
3421                         $url = 'http:' . substr($url, 5);
3422                 }
3423
3424                 //prepend slash if the URL has no slash in it
3425                 // "http://www.example" -> "http://www.example/"
3426                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
3427                         $url .= '/';
3428                 }
3429
3430                 if ($url != "http:///")
3431                         return $url;
3432                 else
3433                         return '';
3434         }
3435
3436         function validate_feed_url($url) {
3437                 $parts = parse_url($url);
3438
3439                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
3440
3441         }
3442
3443         function get_article_enclosures($link, $id) {
3444
3445                 $query = "SELECT * FROM ttrss_enclosures
3446                         WHERE post_id = '$id' AND content_url != ''";
3447
3448                 $rv = array();
3449
3450                 $result = db_query($link, $query);
3451
3452                 if (db_num_rows($result) > 0) {
3453                         while ($line = db_fetch_assoc($result)) {
3454                                 array_push($rv, $line);
3455                         }
3456                 }
3457
3458                 return $rv;
3459         }
3460
3461         function save_email_address($link, $email) {
3462                 // FIXME: implement persistent storage of emails
3463
3464                 if (!$_SESSION['stored_emails'])
3465                         $_SESSION['stored_emails'] = array();
3466
3467                 if (!in_array($email, $_SESSION['stored_emails']))
3468                         array_push($_SESSION['stored_emails'], $email);
3469         }
3470
3471
3472         function get_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
3473
3474                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3475
3476                 $sql_is_cat = bool_to_sql_bool($is_cat);
3477
3478                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
3479                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
3480                         AND owner_uid = " . $owner_uid);
3481
3482                 if (db_num_rows($result) == 1) {
3483                         return db_fetch_result($result, 0, "access_key");
3484                 } else {
3485                         $key = db_escape_string(sha1(uniqid(rand(), true)));
3486
3487                         $result = db_query($link, "INSERT INTO ttrss_access_keys
3488                                 (access_key, feed_id, is_cat, owner_uid)
3489                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
3490
3491                         return $key;
3492                 }
3493                 return false;
3494         }
3495
3496         function get_feeds_from_html($url, $content)
3497         {
3498                 $url     = fix_url($url);
3499                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
3500
3501                 libxml_use_internal_errors(true);
3502
3503                 $doc = new DOMDocument();
3504                 $doc->loadHTML($content);
3505                 $xpath = new DOMXPath($doc);
3506                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
3507                 $feedUrls = array();
3508                 foreach ($entries as $entry) {
3509                         if ($entry->hasAttribute('href')) {
3510                                 $title = $entry->getAttribute('title');
3511                                 if ($title == '') {
3512                                         $title = $entry->getAttribute('type');
3513                                 }
3514                                 $feedUrl = rewrite_relative_url(
3515                                         $baseUrl, $entry->getAttribute('href')
3516                                 );
3517                                 $feedUrls[$feedUrl] = $title;
3518                         }
3519                 }
3520                 return $feedUrls;
3521         }
3522
3523         function is_html($content) {
3524                 return preg_match("/<html|DOCTYPE html/i", substr($content, 0, 20)) !== 0;
3525         }
3526
3527         function url_is_html($url, $login = false, $pass = false) {
3528                 return is_html(fetch_file_contents($url, false, $login, $pass));
3529         }
3530
3531         function print_label_select($link, $name, $value, $attributes = "") {
3532
3533                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
3534                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
3535
3536                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
3537                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
3538
3539                 while ($line = db_fetch_assoc($result)) {
3540
3541                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
3542
3543                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
3544                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
3545
3546                 }
3547
3548 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
3549
3550                 print "</select>";
3551
3552
3553         }
3554
3555         function format_article_enclosures($link, $id, $always_display_enclosures,
3556                                         $article_content) {
3557
3558                 $result = get_article_enclosures($link, $id);
3559                 $rv = '';
3560
3561                 if (count($result) > 0) {
3562
3563                         $entries_html = array();
3564                         $entries = array();
3565                         $entries_inline = array();
3566
3567                         foreach ($result as $line) {
3568
3569                                 $url = $line["content_url"];
3570                                 $ctype = $line["content_type"];
3571
3572                                 if (!$ctype) $ctype = __("unknown type");
3573
3574                                 $filename = substr($url, strrpos($url, "/")+1);
3575
3576                                 $player = format_inline_player($link, $url, $ctype);
3577
3578                                 if ($player) array_push($entries_inline, $player);
3579
3580 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3581 #                                       $filename . " (" . $ctype . ")" . "</a>";
3582
3583                                 $entry = "<div onclick=\"window.open('".htmlspecialchars($url)."')\"
3584                                         dojoType=\"dijit.MenuItem\">$filename ($ctype)</div>";
3585
3586                                 array_push($entries_html, $entry);
3587
3588                                 $entry = array();
3589
3590                                 $entry["type"] = $ctype;
3591                                 $entry["filename"] = $filename;
3592                                 $entry["url"] = $url;
3593
3594                                 array_push($entries, $entry);
3595                         }
3596
3597                         if (!get_pref($link, "STRIP_IMAGES")) {
3598                                 if ($always_display_enclosures ||
3599                                                         !preg_match("/<img/i", $article_content)) {
3600
3601                                         foreach ($entries as $entry) {
3602
3603                                                 if (preg_match("/image/", $entry["type"]) ||
3604                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
3605
3606                                                                 $rv .= "<p><img
3607                                                                 alt=\"".htmlspecialchars($entry["filename"])."\"
3608                                                                 src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
3609
3610                                                 }
3611                                         }
3612                                 }
3613                         }
3614
3615                         if (count($entries_inline) > 0) {
3616                                 $rv .= "<hr clear='both'/>";
3617                                 foreach ($entries_inline as $entry) { $rv .= $entry; };
3618                                 $rv .= "<hr clear='both'/>";
3619                         }
3620
3621                         $rv .= "<br/><div dojoType=\"dijit.form.DropDownButton\">".
3622                                 "<span>" . __('Attachments')."</span>";
3623                         $rv .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3624
3625                         foreach ($entries_html as $entry) { $rv .= $entry; };
3626
3627                         $rv .= "</div></div>";
3628                 }
3629
3630                 return $rv;
3631         }
3632
3633         function getLastArticleId($link) {
3634                 $result = db_query($link, "SELECT MAX(ref_id) AS id FROM ttrss_user_entries
3635                         WHERE owner_uid = " . $_SESSION["uid"]);
3636
3637                 if (db_num_rows($result) == 1) {
3638                         return db_fetch_result($result, 0, "id");
3639                 } else {
3640                         return -1;
3641                 }
3642         }
3643
3644         function build_url($parts) {
3645                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
3646         }
3647
3648         /**
3649          * Converts a (possibly) relative URL to a absolute one.
3650          *
3651          * @param string $url     Base URL (i.e. from where the document is)
3652          * @param string $rel_url Possibly relative URL in the document
3653          *
3654          * @return string Absolute URL
3655          */
3656         function rewrite_relative_url($url, $rel_url) {
3657                 if (strpos($rel_url, "magnet:") === 0) {
3658                         return $rel_url;
3659                 } else if (strpos($rel_url, "://") !== false) {
3660                         return $rel_url;
3661                 } else if (strpos($rel_url, "//") === 0) {
3662                         # protocol-relative URL (rare but they exist)
3663                         return $rel_url;
3664                 } else if (strpos($rel_url, "/") === 0)
3665                 {
3666                         $parts = parse_url($url);
3667                         $parts['path'] = $rel_url;
3668
3669                         return build_url($parts);
3670
3671                 } else {
3672                         $parts = parse_url($url);
3673                         if (!isset($parts['path'])) {
3674                                 $parts['path'] = '/';
3675                         }
3676                         $dir = $parts['path'];
3677                         if (substr($dir, -1) !== '/') {
3678                                 $dir = dirname($parts['path']);
3679                                 $dir !== '/' && $dir .= '/';
3680                         }
3681                         $parts['path'] = $dir . $rel_url;
3682
3683                         return build_url($parts);
3684                 }
3685         }
3686
3687         function sphinx_search($query, $offset = 0, $limit = 30) {
3688                 require_once 'lib/sphinxapi.php';
3689
3690                 $sphinxClient = new SphinxClient();
3691
3692                 $sphinxClient->SetServer('localhost', 9312);
3693                 $sphinxClient->SetConnectTimeout(1);
3694
3695                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
3696                         'feed_title' => 20));
3697
3698                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
3699                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
3700                 $sphinxClient->SetLimits($offset, $limit, 1000);
3701                 $sphinxClient->SetArrayResult(false);
3702                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
3703
3704                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
3705
3706                 $ids = array();
3707
3708                 if (is_array($result['matches'])) {
3709                         foreach (array_keys($result['matches']) as $int_id) {
3710                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
3711                                 array_push($ids, $ref_id);
3712                         }
3713                 }
3714
3715                 return $ids;
3716         }
3717
3718         function cleanup_tags($link, $days = 14, $limit = 1000) {
3719
3720                 if (DB_TYPE == "pgsql") {
3721                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
3722                 } else if (DB_TYPE == "mysql") {
3723                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
3724                 }
3725
3726                 $tags_deleted = 0;
3727
3728                 while ($limit > 0) {
3729                         $limit_part = 500;
3730
3731                         $query = "SELECT ttrss_tags.id AS id
3732                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
3733                                 WHERE post_int_id = int_id AND $interval_query AND
3734                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
3735
3736                         $result = db_query($link, $query);
3737
3738                         $ids = array();
3739
3740                         while ($line = db_fetch_assoc($result)) {
3741                                 array_push($ids, $line['id']);
3742                         }
3743
3744                         if (count($ids) > 0) {
3745                                 $ids = join(",", $ids);
3746                                 print ".";
3747
3748                                 $tmp_result = db_query($link, "DELETE FROM ttrss_tags WHERE id IN ($ids)");
3749                                 $tags_deleted += db_affected_rows($link, $tmp_result);
3750                         } else {
3751                                 break;
3752                         }
3753
3754                         $limit -= $limit_part;
3755                 }
3756
3757                 print "\n";
3758
3759                 return $tags_deleted;
3760         }
3761
3762         function print_user_stylesheet($link) {
3763                 $value = get_pref($link, 'USER_STYLESHEET');
3764
3765                 if ($value) {
3766                         print "<style type=\"text/css\">";
3767                         print str_replace("<br/>", "\n", $value);
3768                         print "</style>";
3769                 }
3770
3771         }
3772
3773         function rewrite_urls($html) {
3774                 libxml_use_internal_errors(true);
3775
3776                 $charset_hack = '<head>
3777                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
3778                 </head>';
3779
3780                 $doc = new DOMDocument();
3781                 $doc->loadHTML($charset_hack . $html);
3782                 $xpath = new DOMXPath($doc);
3783
3784                 $entries = $xpath->query('//*/text()');
3785
3786                 foreach ($entries as $entry) {
3787                         if (strstr($entry->wholeText, "://") !== false) {
3788                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
3789                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
3790
3791                                 if ($text != $entry->wholeText) {
3792                                         $cdoc = new DOMDocument();
3793                                         $cdoc->loadHTML($charset_hack . $text);
3794
3795
3796                                         foreach ($cdoc->childNodes as $cnode) {
3797                                                 $cnode = $doc->importNode($cnode, true);
3798
3799                                                 if ($cnode) {
3800                                                         $entry->parentNode->insertBefore($cnode);
3801                                                 }
3802                                         }
3803
3804                                         $entry->parentNode->removeChild($entry);
3805
3806                                 }
3807                         }
3808                 }
3809
3810                 $node = $doc->getElementsByTagName('body')->item(0);
3811
3812                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
3813                 if ($node)
3814                         return $doc->saveXML($node);
3815                 else
3816                         return $html;
3817         }
3818
3819         function filter_to_sql($link, $filter, $owner_uid) {
3820                 $query = array();
3821
3822                 if (DB_TYPE == "pgsql")
3823                         $reg_qpart = "~";
3824                 else
3825                         $reg_qpart = "REGEXP";
3826
3827                 foreach ($filter["rules"] AS $rule) {
3828                         $regexp_valid = preg_match('/' . $rule['reg_exp'] . '/',
3829                                 $rule['reg_exp']) !== FALSE;
3830
3831                         if ($regexp_valid) {
3832
3833                                 $rule['reg_exp'] = db_escape_string($rule['reg_exp']);
3834
3835                                 switch ($rule["type"]) {
3836                                         case "title":
3837                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3838                                                         $rule['reg_exp'] . "')";
3839                                                 break;
3840                                         case "content":
3841                                                 $qpart = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
3842                                                         $rule['reg_exp'] . "')";
3843                                                 break;
3844                                         case "both":
3845                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3846                                                         $rule['reg_exp'] . "') OR LOWER(" .
3847                                                         "ttrss_entries.content) $reg_qpart LOWER('" . $rule['reg_exp'] . "')";
3848                                                 break;
3849                                         case "tag":
3850                                                 $qpart = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
3851                                                         $rule['reg_exp'] . "')";
3852                                                 break;
3853                                         case "link":
3854                                                 $qpart = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
3855                                                         $rule['reg_exp'] . "')";
3856                                                 break;
3857                                         case "author":
3858                                                 $qpart = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
3859                                                         $rule['reg_exp'] . "')";
3860                                                 break;
3861                                 }
3862
3863                                 if (isset($rule["feed_id"]) && $rule["feed_id"] > 0) {
3864                                         $qpart .= " AND feed_id = " . db_escape_string($rule["feed_id"]);
3865                                 }
3866
3867                                 if (isset($rule["cat_id"])) {
3868
3869                                         if ($rule["cat_id"] > 0) {
3870                                                 $children = getChildCategories($link, $rule["cat_id"], $owner_uid);
3871                                                 array_push($children, $rule["cat_id"]);
3872
3873                                                 $children = join(",", $children);
3874
3875                                                 $cat_qpart = "cat_id IN ($children)";
3876                                         } else {
3877                                                 $cat_qpart = "cat_id IS NULL";
3878                                         }
3879
3880                                         $qpart .= " AND $cat_qpart";
3881                                 }
3882
3883                                 array_push($query, "($qpart)");
3884
3885                         }
3886                 }
3887
3888                 if (count($query) > 0) {
3889                         return "(" . join($filter["match_any_rule"] ? "OR" : "AND", $query) . ")";
3890                 } else {
3891                         return "(false)";
3892                 }
3893         }
3894
3895         if (!function_exists('gzdecode')) {
3896                 function gzdecode($string) { // no support for 2nd argument
3897                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
3898                                 base64_encode($string));
3899                 }
3900         }
3901
3902         function get_random_bytes($length) {
3903                 if (function_exists('openssl_random_pseudo_bytes')) {
3904                         return openssl_random_pseudo_bytes($length);
3905                 } else {
3906                         $output = "";
3907
3908                         for ($i = 0; $i < $length; $i++)
3909                                 $output .= chr(mt_rand(0, 255));
3910
3911                         return $output;
3912                 }
3913         }
3914
3915         function read_stdin() {
3916                 $fp = fopen("php://stdin", "r");
3917
3918                 if ($fp) {
3919                         $line = trim(fgets($fp));
3920                         fclose($fp);
3921                         return $line;
3922                 }
3923
3924                 return null;
3925         }
3926
3927         function tmpdirname($path, $prefix) {
3928                 // Use PHP's tmpfile function to create a temporary
3929                 // directory name. Delete the file and keep the name.
3930                 $tempname = tempnam($path,$prefix);
3931                 if (!$tempname)
3932                         return false;
3933
3934                 if (!unlink($tempname))
3935                         return false;
3936
3937        return $tempname;
3938         }
3939
3940         function getFeedCategory($link, $feed) {
3941                 $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
3942                         WHERE id = '$feed'");
3943
3944                 if (db_num_rows($result) > 0) {
3945                         return db_fetch_result($result, 0, "cat_id");
3946                 } else {
3947                         return false;
3948                 }
3949
3950         }
3951
3952         function implements_interface($class, $interface) {
3953                 return in_array($interface, class_implements($class));
3954         }
3955
3956         function geturl($url){
3957
3958                 (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');
3959
3960                 $curl = curl_init();
3961                 $header[0] = "Accept: text/xml,application/xml,application/xhtml+xml,";
3962                 $header[0] .= "text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5";
3963                 $header[] = "Cache-Control: max-age=0";
3964                 $header[] = "Connection: keep-alive";
3965                 $header[] = "Keep-Alive: 300";
3966                 $header[] = "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7";
3967                 $header[] = "Accept-Language: en-us,en;q=0.5";
3968                 $header[] = "Pragma: ";
3969
3970                 curl_setopt($curl, CURLOPT_URL, $url);
3971                 curl_setopt($curl, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20100101 Firefox/5.0 Firefox/5.0');
3972                 curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
3973                 curl_setopt($curl, CURLOPT_HEADER, true);
3974                 curl_setopt($curl, CURLOPT_REFERER, $url);
3975                 curl_setopt($curl, CURLOPT_ENCODING, 'gzip,deflate');
3976                 curl_setopt($curl, CURLOPT_AUTOREFERER, true);
3977                 curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
3978                 //curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); //CURLOPT_FOLLOWLOCATION Disabled...
3979                 curl_setopt($curl, CURLOPT_TIMEOUT, 60);
3980
3981                 $html = curl_exec($curl);
3982
3983                 $status = curl_getinfo($curl);
3984                 curl_close($curl);
3985
3986                 if($status['http_code']!=200){
3987                         if($status['http_code'] == 301 || $status['http_code'] == 302) {
3988                                 list($header) = explode("\r\n\r\n", $html, 2);
3989                                 $matches = array();
3990                                 preg_match("/(Location:|URI:)[^(\n)]*/", $header, $matches);
3991                                 $url = trim(str_replace($matches[1],"",$matches[0]));
3992                                 $url_parsed = parse_url($url);
3993                                 return (isset($url_parsed))? geturl($url, $referer):'';
3994                         }
3995                         $oline='';
3996                         foreach($status as $key=>$eline){$oline.='['.$key.']'.$eline.' ';}
3997                         $line =$oline." \r\n ".$url."\r\n-----------------\r\n";
3998                         $handle = @fopen('./curl.error.log', 'a');
3999                         fwrite($handle, $line);
4000                         return FALSE;
4001                 }
4002                 return $url;
4003         }
4004
4005         function get_minified_js($files) {
4006                 require_once 'lib/jshrink/Minifier.php';
4007
4008                 $rv = '';
4009
4010                 foreach ($files as $js) {
4011                         if (!isset($_GET['debug'])) {
4012                                 $cached_file = CACHE_DIR . "/js/$js.js";
4013
4014                                 if (file_exists($cached_file) &&
4015                                                 is_readable($cached_file) &&
4016                                                 filemtime($cached_file) >= filemtime("js/$js.js")) {
4017
4018                                         $rv .= file_get_contents($cached_file);
4019
4020                                 } else {
4021                                         $minified = JShrink\Minifier::minify(file_get_contents("js/$js.js"));
4022                                         file_put_contents($cached_file, $minified);
4023                                         $rv .= $minified;
4024                                 }
4025                         } else {
4026                                 $rv .= file_get_contents("js/$js.js");
4027                         }
4028                 }
4029
4030                 return $rv;
4031         }
4032
4033         // http://php.net/gzencode
4034         function gzdecode($data) {
4035                 $len = strlen($data);
4036                 if ($len < 18 || strcmp(substr($data,0,2),"\x1f\x8b")) {
4037                         return null;    // Not GZIP format (See RFC 1952)
4038                 }
4039                 $method = ord(substr($data,2,1));       // Compression method
4040                 $flags  = ord(substr($data,3,1));       // Flags
4041                 if ($flags & 31 != $flags) {
4042                         // Reserved bits are set -- NOT ALLOWED by RFC 1952
4043                         return null;
4044                 }
4045                 // NOTE: $mtime may be negative (PHP integer limitations)
4046                 $mtime = unpack("V", substr($data,4,4));
4047                 $mtime = $mtime[1];
4048                 $xfl     = substr($data,8,1);
4049                 $os             = substr($data,8,1);
4050                 $headerlen = 10;
4051                 $extralen       = 0;
4052                 $extra           = "";
4053                 if ($flags & 4) {
4054                         // 2-byte length prefixed EXTRA data in header
4055                         if ($len - $headerlen - 2 < 8) {
4056                                 return false;           // Invalid format
4057                         }
4058                         $extralen = unpack("v",substr($data,8,2));
4059                         $extralen = $extralen[1];
4060                         if ($len - $headerlen - 2 - $extralen < 8) {
4061                                 return false;           // Invalid format
4062                         }
4063                         $extra = substr($data,10,$extralen);
4064                         $headerlen += 2 + $extralen;
4065                 }
4066
4067                 $filenamelen = 0;
4068                 $filename = "";
4069                 if ($flags & 8) {
4070                         // C-style string file NAME data in header
4071                         if ($len - $headerlen - 1 < 8) {
4072                                 return false;           // Invalid format
4073                         }
4074                         $filenamelen = strpos(substr($data,8+$extralen),chr(0));
4075                         if ($filenamelen === false || $len - $headerlen - $filenamelen - 1 < 8) {
4076                                 return false;           // Invalid format
4077                         }
4078                         $filename = substr($data,$headerlen,$filenamelen);
4079                         $headerlen += $filenamelen + 1;
4080                 }
4081
4082                 $commentlen = 0;
4083                 $comment = "";
4084                 if ($flags & 16) {
4085                         // C-style string COMMENT data in header
4086                         if ($len - $headerlen - 1 < 8) {
4087                                 return false;           // Invalid format
4088                         }
4089                         $commentlen = strpos(substr($data,8+$extralen+$filenamelen),chr(0));
4090                         if ($commentlen === false || $len - $headerlen - $commentlen - 1 < 8) {
4091                                 return false;           // Invalid header format
4092                         }
4093                         $comment = substr($data,$headerlen,$commentlen);
4094                         $headerlen += $commentlen + 1;
4095                 }
4096
4097                 $headercrc = "";
4098                 if ($flags & 1) {
4099                         // 2-bytes (lowest order) of CRC32 on header present
4100                         if ($len - $headerlen - 2 < 8) {
4101                                 return false;           // Invalid format
4102                         }
4103                         $calccrc = crc32(substr($data,0,$headerlen)) & 0xffff;
4104                         $headercrc = unpack("v", substr($data,$headerlen,2));
4105                         $headercrc = $headercrc[1];
4106                         if ($headercrc != $calccrc) {
4107                                 return false;           // Bad header CRC
4108                         }
4109                         $headerlen += 2;
4110                 }
4111
4112                 // GZIP FOOTER - These be negative due to PHP's limitations
4113                 $datacrc = unpack("V",substr($data,-8,4));
4114                 $datacrc = $datacrc[1];
4115                 $isize = unpack("V",substr($data,-4));
4116                 $isize = $isize[1];
4117
4118                 // Perform the decompression:
4119                 $bodylen = $len-$headerlen-8;
4120                 if ($bodylen < 1) {
4121                         // This should never happen - IMPLEMENTATION BUG!
4122                         return null;
4123                 }
4124                 $body = substr($data,$headerlen,$bodylen);
4125                 $data = "";
4126                 if ($bodylen > 0) {
4127                         switch ($method) {
4128                                 case 8:
4129                                         // Currently the only supported compression method:
4130                                         $data = gzinflate($body);
4131                                         break;
4132                                 default:
4133                                         // Unknown compression method
4134                                         return false;
4135                         }
4136                 } else {
4137                         // I'm not sure if zero-byte body content is allowed.
4138                         // Allow it for now...  Do nothing...
4139                 }
4140
4141                 // Verifiy decompressed size and CRC32:
4142                 // NOTE: This may fail with large data sizes depending on how
4143                 //                       PHP's integer limitations affect strlen() since $isize
4144                 //                       may be negative for large sizes.
4145                 if ($isize != strlen($data) || crc32($data) != $datacrc) {
4146                         // Bad format!  Length or CRC doesn't match!
4147                         return false;
4148                 }
4149                 return $data;
4150         }
4151
4152 ?>