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