include/functions.php

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