include/functions.php

   1 <?php
   2         define('EXPECTED_CONFIG_VERSION', 26);
   3         define('SCHEMA_VERSION', 99);
   4
   5         $fetch_last_error = false;
   6
   7         function __autoload($class) {
   8                 $class_file = str_replace("_", "/", strtolower(basename($class)));
   9
  10                 $file = dirname(__FILE__)."/../plugins/$class_file.php";
  11
  12                 if (file_exists($file)) {
  13                         require $file;
  14                         return;
  15                 }
  16
  17                 $file = dirname(__FILE__)."/../classes/$class_file.php";
  18
  19                 if (file_exists($file)) {
  20                         require $file;
  21                 }
  22
  23         }
  24
  25         mb_internal_encoding("UTF-8");
  26         date_default_timezone_set('UTC');
  27         if (defined('E_DEPRECATED')) {
  28                 error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
  29         } else {
  30                 error_reporting(E_ALL & ~E_NOTICE);
  31         }
  32
  33         require_once 'config.php';
  34
  35         if (DB_TYPE == "pgsql") {
  36                 define('SUBSTRING_FOR_DATE', 'SUBSTRING_FOR_DATE');
  37         } else {
  38                 define('SUBSTRING_FOR_DATE', 'SUBSTRING');
  39         }
  40
  41         define('THEME_VERSION_REQUIRED', 1.1);
  42
  43         /**
  44          * Return available translations names.
  45          *
  46          * @access public
  47          * @return array A array of available translations.
  48          */
  49         function get_translations() {
  50                 $tr = array(
  51                                         "auto"  => "Detect automatically",
  52                                         "ca_CA" => "Català",
  53                                         "en_US" => "English",
  54                                         "es_ES" => "Español",
  55                                         "de_DE" => "Deutsch",
  56                                         "fr_FR" => "Français",
  57                                         "hu_HU" => "Magyar (Hungarian)",
  58                                         "it_IT" => "Italiano",
  59                                         "ja_JP" => "日本語 (Japanese)",
  60                                         "nb_NO" => "Norwegian bokmål",
  61                                         "pl_PL" => "Polski",
  62                                         "ru_RU" => "Русский",
  63                                         "pt_BR" => "Portuguese/Brazil",
  64                                         "zh_CN" => "Simplified Chinese");
  65
  66                 return $tr;
  67         }
  68
  69         require_once "lib/accept-to-gettext.php";
  70         require_once "lib/gettext/gettext.inc";
  71
  72         function startup_gettext() {
  73
  74                 # Get locale from Accept-Language header
  75                 $lang = al2gt(array_keys(get_translations()), "text/html");
  76
  77                 if (defined('_TRANSLATION_OVERRIDE_DEFAULT')) {
  78                         $lang = _TRANSLATION_OVERRIDE_DEFAULT;
  79                 }
  80
  81                 /* In login action of mobile version */
  82                 if ($_POST["language"] && defined('MOBILE_VERSION')) {
  83                         $lang = $_POST["language"];
  84                 } else {
  85                         $lang = $_SESSION["language"];
  86                 }
  87
  88                 if ($lang) {
  89                         if (defined('LC_MESSAGES')) {
  90                                 _setlocale(LC_MESSAGES, $lang);
  91                         } else if (defined('LC_ALL')) {
  92                                 _setlocale(LC_ALL, $lang);
  93                         }
  94
  95                         if (defined('MOBILE_VERSION')) {
  96                                 _bindtextdomain("messages", "../locale");
  97                         } else {
  98                                 _bindtextdomain("messages", "locale");
  99                         }
 100
 101                         _textdomain("messages");
 102                         _bind_textdomain_codeset("messages", "UTF-8");
 103                 }
 104         }
 105
 106         startup_gettext();
 107
 108         require_once 'db-prefs.php';
 109         require_once 'version.php';
 110
 111         define('MAGPIE_OUTPUT_ENCODING', 'UTF-8');
 112
 113         define('SELF_USER_AGENT', 'Tiny Tiny RSS/' . VERSION . ' (http://tt-rss.org/)');
 114         define('MAGPIE_USER_AGENT', SELF_USER_AGENT);
 115
 116         ini_set('user_agent', SELF_USER_AGENT);
 117
 118         require_once 'lib/pubsubhubbub/publisher.php';
 119         require_once 'lib/htmLawed.php';
 120
 121         $tz_offset = -1;
 122         $utc_tz = new DateTimeZone('UTC');
 123         $schema_version = false;
 124
 125         /**
 126          * Print a timestamped debug message.
 127          *
 128          * @param string $msg The debug message.
 129          * @return void
 130          */
 131         function _debug($msg) {
 132                 if (defined('QUIET') && QUIET) {
 133                         return;
 134                 }
 135                 $ts = strftime("%H:%M:%S", time());
 136                 if (function_exists('posix_getpid')) {
 137                         $ts = "$ts/" . posix_getpid();
 138                 }
 139                 print "[$ts] $msg\n";
 140         } // function _debug
 141
 142         /**
 143          * Purge a feed old posts.
 144          *
 145          * @param mixed $link A database connection.
 146          * @param mixed $feed_id The id of the purged feed.
 147          * @param mixed $purge_interval Olderness of purged posts.
 148          * @param boolean $debug Set to True to enable the debug. False by default.
 149          * @access public
 150          * @return void
 151          */
 152         function purge_feed($link, $feed_id, $purge_interval, $debug = false) {
 153
 154                 if (!$purge_interval) $purge_interval = feed_purge_interval($link, $feed_id);
 155
 156                 $rows = -1;
 157
 158                 $result = db_query($link,
 159                         "SELECT owner_uid FROM ttrss_feeds WHERE id = '$feed_id'");
 160
 161                 $owner_uid = false;
 162
 163                 if (db_num_rows($result) == 1) {
 164                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 165                 }
 166
 167                 if ($purge_interval == -1 || !$purge_interval) {
 168                         if ($owner_uid) {
 169                                 ccache_update($link, $feed_id, $owner_uid);
 170                         }
 171                         return;
 172                 }
 173
 174                 if (!$owner_uid) return;
 175
 176                 if (FORCE_ARTICLE_PURGE == 0) {
 177                         $purge_unread = get_pref($link, "PURGE_UNREAD_ARTICLES",
 178                                 $owner_uid, false);
 179                 } else {
 180                         $purge_unread = true;
 181                         $purge_interval = FORCE_ARTICLE_PURGE;
 182                 }
 183
 184                 if (!$purge_unread) $query_limit = " unread = false AND ";
 185
 186                 if (DB_TYPE == "pgsql") {
 187                         $pg_version = get_pgsql_version($link);
 188
 189                         if (preg_match("/^7\./", $pg_version) || preg_match("/^8\.0/", $pg_version)) {
 190
 191                                 $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 192                                         ttrss_entries.id = ref_id AND
 193                                         marked = false AND
 194                                         feed_id = '$feed_id' AND
 195                                         $query_limit
 196                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 197
 198                         } else {
 199
 200                                 $result = db_query($link, "DELETE FROM ttrss_user_entries
 201                                         USING ttrss_entries
 202                                         WHERE ttrss_entries.id = ref_id AND
 203                                         marked = false AND
 204                                         feed_id = '$feed_id' AND
 205                                         $query_limit
 206                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 207                         }
 208
 209                         $rows = pg_affected_rows($result);
 210
 211                 } else {
 212
 213 /*                      $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 214                                 marked = false AND feed_id = '$feed_id' AND
 215                                 (SELECT date_updated FROM ttrss_entries WHERE
 216                                         id = ref_id) < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)"); */
 217
 218                         $result = db_query($link, "DELETE FROM ttrss_user_entries
 219                                 USING ttrss_user_entries, ttrss_entries
 220                                 WHERE ttrss_entries.id = ref_id AND
 221                                 marked = false AND
 222                                 feed_id = '$feed_id' AND
 223                                 $query_limit
 224                                 ttrss_entries.date_updated < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)");
 225
 226                         $rows = mysql_affected_rows($link);
 227
 228                 }
 229
 230                 ccache_update($link, $feed_id, $owner_uid);
 231
 232                 if ($debug) {
 233                         _debug("Purged feed $feed_id ($purge_interval): deleted $rows articles");
 234                 }
 235         } // function purge_feed
 236
 237         function feed_purge_interval($link, $feed_id) {
 238
 239                 $result = db_query($link, "SELECT purge_interval, owner_uid FROM ttrss_feeds
 240                         WHERE id = '$feed_id'");
 241
 242                 if (db_num_rows($result) == 1) {
 243                         $purge_interval = db_fetch_result($result, 0, "purge_interval");
 244                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 245
 246                         if ($purge_interval == 0) $purge_interval = get_pref($link,
 247                                 'PURGE_OLD_DAYS', $owner_uid);
 248
 249                         return $purge_interval;
 250
 251                 } else {
 252                         return -1;
 253                 }
 254         }
 255
 256         function purge_orphans($link, $do_output = false) {
 257
 258                 // purge orphaned posts in main content table
 259                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
 260                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
 261
 262                 if ($do_output) {
 263                         $rows = db_affected_rows($link, $result);
 264                         _debug("Purged $rows orphaned posts.");
 265                 }
 266         }
 267
 268         function get_feed_update_interval($link, $feed_id) {
 269                 $result = db_query($link, "SELECT owner_uid, update_interval FROM
 270                         ttrss_feeds WHERE id = '$feed_id'");
 271
 272                 if (db_num_rows($result) == 1) {
 273                         $update_interval = db_fetch_result($result, 0, "update_interval");
 274                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 275
 276                         if ($update_interval != 0) {
 277                                 return $update_interval;
 278                         } else {
 279                                 return get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $owner_uid, false);
 280                         }
 281
 282                 } else {
 283                         return -1;
 284                 }
 285         }
 286
 287         function fetch_file_contents($url, $type = false, $login = false, $pass = false, $post_query = false) {
 288                 $login = urlencode($login);
 289                 $pass = urlencode($pass);
 290
 291                 global $fetch_last_error;
 292
 293                 if (function_exists('curl_init') && !ini_get("open_basedir")) {
 294                         $ch = curl_init($url);
 295
 296                         curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 15);
 297                         curl_setopt($ch, CURLOPT_TIMEOUT, 45);
 298                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
 299                         curl_setopt($ch, CURLOPT_MAXREDIRS, 20);
 300                         curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
 301                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 302                         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 303                         curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 304                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 305                         curl_setopt($ch, CURLOPT_ENCODING , "gzip");
 306
 307                         if ($post_query) {
 308                                 curl_setopt($ch, CURLOPT_POST, true);
 309                                 curl_setopt($ch, CURLOPT_POSTFIELDS, $post_query);
 310                         }
 311
 312                         if ($login && $pass)
 313                                 curl_setopt($ch, CURLOPT_USERPWD, "$login:$pass");
 314
 315                         $contents = @curl_exec($ch);
 316
 317                         if ($contents === false) {
 318                                 $fetch_last_error = curl_error($ch);
 319                                 curl_close($ch);
 320                                 return false;
 321                         }
 322
 323                         $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 324                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 325                         curl_close($ch);
 326
 327                         if ($http_code != 200 || $type && strpos($content_type, "$type") === false) {
 328                                 return false;
 329                         }
 330
 331                         return $contents;
 332                 } else {
 333                         if ($login && $pass ){
 334                                 $url_parts = array();
 335
 336                                 preg_match("/(^[^:]*):\/\/(.*)/", $url, $url_parts);
 337
 338                                 if ($url_parts[1] && $url_parts[2]) {
 339                                         $url = $url_parts[1] . "://$login:$pass@" . $url_parts[2];
 340                                 }
 341                         }
 342
 343                         $data = @file_get_contents($url);
 344
 345                         if (!$data && function_exists('error_get_last')) {
 346                                 $error = error_get_last();
 347                                 $fetch_last_error = $error["message"];
 348                         }
 349                         return $data;
 350                 }
 351
 352         }
 353
 354         /**
 355          * Try to determine the favicon URL for a feed.
 356          * adapted from wordpress favicon plugin by Jeff Minard (http://thecodepro.com/)
 357          * http://dev.wp-plugins.org/file/favatars/trunk/favatars.php
 358          *
 359          * @param string $url A feed or page URL
 360          * @access public
 361          * @return mixed The favicon URL, or false if none was found.
 362          */
 363         function get_favicon_url($url) {
 364
 365                 $favicon_url = false;
 366
 367                 if ($html = @fetch_file_contents($url)) {
 368
 369                         libxml_use_internal_errors(true);
 370
 371                         $doc = new DOMDocument();
 372                         $doc->loadHTML($html);
 373                         $xpath = new DOMXPath($doc);
 374
 375                         $base = $xpath->query('/html/head/base');
 376                         foreach ($base as $b) {
 377                                 $url = $b->getAttribute("href");
 378                                 break;
 379                         }
 380
 381                         $entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon"]');
 382                         if (count($entries) > 0) {
 383                                 foreach ($entries as $entry) {
 384                                         $favicon_url = rewrite_relative_url($url, $entry->getAttribute("href"));
 385                                         break;
 386                                 }
 387                         }
 388                 }
 389
 390                 if (!$favicon_url)
 391                         $favicon_url = rewrite_relative_url($url, "/favicon.ico");
 392
 393                 return $favicon_url;
 394         } // function get_favicon_url
 395
 396         function check_feed_favicon($site_url, $feed, $link) {
 397 #               print "FAVICON [$site_url]: $favicon_url\n";
 398
 399                 $icon_file = ICONS_DIR . "/$feed.ico";
 400
 401                 if (!file_exists($icon_file)) {
 402                         $favicon_url = get_favicon_url($site_url);
 403
 404                         if ($favicon_url) {
 405                                 // Limiting to "image" type misses those served with text/plain
 406                                 $contents = fetch_file_contents($favicon_url); // , "image");
 407
 408                                 if ($contents) {
 409                                         // Crude image type matching.
 410                                         // Patterns gleaned from the file(1) source code.
 411                                         if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
 412                                                 // 0       string  \000\000\001\000        MS Windows icon resource
 413                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
 414                                         }
 415                                         elseif (preg_match('/^GIF8/', $contents)) {
 416                                                 // 0       string          GIF8            GIF image data
 417                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
 418                                         }
 419                                         elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
 420                                                 // 0       string          \x89PNG\x0d\x0a\x1a\x0a         PNG image data
 421                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
 422                                         }
 423                                         elseif (preg_match('/^\xff\xd8/', $contents)) {
 424                                                 // 0       beshort         0xffd8          JPEG image data
 425                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
 426                                         }
 427                                         else {
 428                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
 429                                                 $contents = "";
 430                                         }
 431                                 }
 432
 433                                 if ($contents) {
 434                                         $fp = @fopen($icon_file, "w");
 435
 436                                         if ($fp) {
 437                                                 fwrite($fp, $contents);
 438                                                 fclose($fp);
 439                                                 chmod($icon_file, 0644);
 440                                         }
 441                                 }
 442                         }
 443                 }
 444         }
 445
 446         function print_select($id, $default, $values, $attributes = "") {
 447                 print "<select name=\"$id\" id=\"$id\" $attributes>";
 448                 foreach ($values as $v) {
 449                         if ($v == $default)
 450                                 $sel = "selected=\"1\"";
 451                          else
 452                                 $sel = "";
 453
 454                         print "<option value=\"$v\" $sel>$v</option>";
 455                 }
 456                 print "</select>";
 457         }
 458
 459         function print_select_hash($id, $default, $values, $attributes = "") {
 460                 print "<select name=\"$id\" id='$id' $attributes>";
 461                 foreach (array_keys($values) as $v) {
 462                         if ($v == $default)
 463                                 $sel = 'selected="selected"';
 464                          else
 465                                 $sel = "";
 466
 467                         print "<option $sel value=\"$v\">".$values[$v]."</option>";
 468                 }
 469
 470                 print "</select>";
 471         }
 472
 473         function getmicrotime() {
 474                 list($usec, $sec) = explode(" ",microtime());
 475                 return ((float)$usec + (float)$sec);
 476         }
 477
 478         function print_radio($id, $default, $true_is, $values, $attributes = "") {
 479                 foreach ($values as $v) {
 480
 481                         if ($v == $default)
 482                                 $sel = "checked";
 483                          else
 484                                 $sel = "";
 485
 486                         if ($v == $true_is) {
 487                                 $sel .= " value=\"1\"";
 488                         } else {
 489                                 $sel .= " value=\"0\"";
 490                         }
 491
 492                         print "<input class=\"noborder\" dojoType=\"dijit.form.RadioButton\"
 493                                 type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 494
 495                 }
 496         }
 497
 498         function initialize_user_prefs($link, $uid, $profile = false) {
 499
 500                 $uid = db_escape_string($uid);
 501
 502                 if (!$profile) {
 503                         $profile = "NULL";
 504                         $profile_qpart = "AND profile IS NULL";
 505                 } else {
 506                         $profile_qpart = "AND profile = '$profile'";
 507                 }
 508
 509                 if (get_schema_version($link) < 63) $profile_qpart = "";
 510
 511                 db_query($link, "BEGIN");
 512
 513                 $result = db_query($link, "SELECT pref_name,def_value FROM ttrss_prefs");
 514
 515                 $u_result = db_query($link, "SELECT pref_name
 516                         FROM ttrss_user_prefs WHERE owner_uid = '$uid' $profile_qpart");
 517
 518                 $active_prefs = array();
 519
 520                 while ($line = db_fetch_assoc($u_result)) {
 521                         array_push($active_prefs, $line["pref_name"]);
 522                 }
 523
 524                 while ($line = db_fetch_assoc($result)) {
 525                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 526 //                              print "adding " . $line["pref_name"] . "<br>";
 527
 528                                 if (get_schema_version($link) < 63) {
 529                                         db_query($link, "INSERT INTO ttrss_user_prefs
 530                                                 (owner_uid,pref_name,value) VALUES
 531                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 532
 533                                 } else {
 534                                         db_query($link, "INSERT INTO ttrss_user_prefs
 535                                                 (owner_uid,pref_name,value, profile) VALUES
 536                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."', $profile)");
 537                                 }
 538
 539                         }
 540                 }
 541
 542                 db_query($link, "COMMIT");
 543
 544         }
 545
 546         function get_ssl_certificate_id() {
 547                 if ($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"]) {
 548                         return sha1($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"] .
 549                                 $_SERVER["REDIRECT_SSL_CLIENT_V_START"] .
 550                                 $_SERVER["REDIRECT_SSL_CLIENT_V_END"] .
 551                                 $_SERVER["REDIRECT_SSL_CLIENT_S_DN"]);
 552                 }
 553                 return "";
 554         }
 555
 556         function authenticate_user($link, $login, $password, $check_only = false) {
 557
 558                 if (!SINGLE_USER_MODE) {
 559
 560                         $user_id = false;
 561                         $modules = explode(",", AUTH_MODULES);
 562
 563                         foreach ($modules as $module) {
 564                                 $module_class = "auth_$module";
 565                                 if (class_exists($module_class)) {
 566                                         $authenticator = new $module_class($link);
 567
 568                                         $user_id = (int) $authenticator->authenticate($login, $password);
 569
 570                                         if ($user_id) {
 571                                                 $_SESSION["auth_module"] = $module;
 572                                                 break;
 573                                         }
 574
 575                                 } else {
 576                                         print T_sprintf("Fatal: authentication module %s not found.", $module);
 577                                         die;
 578                                 }
 579                         }
 580
 581                         if ($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() > $_SESSION["cookie_lifetime"]) {
 718                                 return false;
 719                         }
 720                 } */
 721
 722                 return true;
 723         }
 724
 725         function login_sequence($link, $login_form = 0) {
 726                 if (SINGLE_USER_MODE) {
 727                         return authenticate_user($link, "admin", null);
 728                 } else {
 729                         if (!$_SESSION["uid"] || !validate_session($link)) {
 730
 731                                 if (AUTH_AUTO_LOGIN && authenticate_user($link, null, null)) {
 732                                     $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 733                                 } else {
 734                                          authenticate_user($link, null, null, true);
 735                                 }
 736
 737                                 if (!$_SESSION["uid"]) render_login_form($link, $login_form);
 738
 739                         } else {
 740                                 /* bump login timestamp */
 741                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 742                                         $_SESSION["uid"]);
 743                         }
 744
 745                         if ($_SESSION["uid"] && $_SESSION["language"] && SESSION_COOKIE_LIFETIME > 0) {
 746                                 setcookie("ttrss_lang", $_SESSION["language"],
 747                                         time() + SESSION_COOKIE_LIFETIME);
 748                         }
 749                 }
 750         }
 751
 752         function truncate_string($str, $max_len, $suffix = '&hellip;') {
 753                 if (mb_strlen($str, "utf-8") > $max_len - 3) {
 754                         return mb_substr($str, 0, $max_len, "utf-8") . $suffix;
 755                 } else {
 756                         return $str;
 757                 }
 758         }
 759
 760         function theme_image($link, $filename) {
 761                 if ($link) {
 762                         $theme_path = get_user_theme_path($link);
 763
 764                         if ($theme_path && is_file($theme_path.$filename)) {
 765                                 return $theme_path.$filename;
 766                         } else {
 767                                 return $filename;
 768                         }
 769                 } else {
 770                         return $filename;
 771                 }
 772         }
 773
 774         function get_user_theme($link) {
 775
 776                 if (get_schema_version($link) >= 63 && $_SESSION["uid"]) {
 777                         $theme_name = get_pref($link, "_THEME_ID");
 778                         if (is_dir("themes/$theme_name")) {
 779                                 return $theme_name;
 780                         } else {
 781                                 return '';
 782                         }
 783                 } else {
 784                         return '';
 785                 }
 786
 787         }
 788
 789         function get_user_theme_path($link) {
 790                 $theme_path = '';
 791
 792                 if (get_schema_version($link) >= 63 && $_SESSION["uid"]) {
 793                         $theme_name = get_pref($link, "_THEME_ID");
 794
 795                         if ($theme_name && is_dir("themes/$theme_name")) {
 796                                 $theme_path = "themes/$theme_name/";
 797                         } else {
 798                                 $theme_name = '';
 799                         }
 800                 } else {
 801                         $theme_path = '';
 802                 }
 803
 804                 if ($theme_path) {
 805                         if (is_file("$theme_path/theme.ini")) {
 806                                 $ini = parse_ini_file("$theme_path/theme.ini", true);
 807                                 if ($ini['theme']['version'] >= THEME_VERSION_REQUIRED) {
 808                                         return $theme_path;
 809                                 }
 810                         }
 811                 }
 812                 return '';
 813         }
 814
 815         function get_user_theme_options($link) {
 816                 $t = get_user_theme_path($link);
 817
 818                 if ($t) {
 819                         if (is_file("$t/theme.ini")) {
 820                                 $ini = parse_ini_file("$t/theme.ini", true);
 821                                 if ($ini['theme']['version']) {
 822                                         return $ini['theme']['options'];
 823                                 }
 824                         }
 825                 }
 826                 return '';
 827         }
 828
 829         function print_theme_includes($link) {
 830
 831                 $t = get_user_theme_path($link);
 832                 $time = time();
 833
 834                 if ($t) {
 835                         print "<link rel=\"stylesheet\" type=\"text/css\"
 836                                 href=\"$t/theme.css?$time \">";
 837                         if (file_exists("$t/theme.js")) {
 838                                 print "<script type=\"text/javascript\" src=\"$t/theme.js?$time\">
 839                                         </script>";
 840                         }
 841                 }
 842         }
 843
 844         function get_all_themes() {
 845                 $themes = glob("themes/*");
 846
 847                 asort($themes);
 848
 849                 $rv = array();
 850
 851                 foreach ($themes as $t) {
 852                         if (is_file("$t/theme.ini")) {
 853                                 $ini = parse_ini_file("$t/theme.ini", true);
 854                                 if ($ini['theme']['version'] >= THEME_VERSION_REQUIRED &&
 855                                                         !$ini['theme']['disabled']) {
 856                                         $entry = array();
 857                                         $entry["path"] = $t;
 858                                         $entry["base"] = basename($t);
 859                                         $entry["name"] = $ini['theme']['name'];
 860                                         $entry["version"] = $ini['theme']['version'];
 861                                         $entry["author"] = $ini['theme']['author'];
 862                                         $entry["options"] = $ini['theme']['options'];
 863                                         array_push($rv, $entry);
 864                                 }
 865                         }
 866                 }
 867
 868                 return $rv;
 869         }
 870
 871         function convert_timestamp($timestamp, $source_tz, $dest_tz) {
 872
 873                 try {
 874                         $source_tz = new DateTimeZone($source_tz);
 875                 } catch (Exception $e) {
 876                         $source_tz = new DateTimeZone('UTC');
 877                 }
 878
 879                 try {
 880                         $dest_tz = new DateTimeZone($dest_tz);
 881                 } catch (Exception $e) {
 882                         $dest_tz = new DateTimeZone('UTC');
 883                 }
 884
 885                 $dt = new DateTime(date('Y-m-d H:i:s', $timestamp), $source_tz);
 886                 return $dt->format('U') + $dest_tz->getOffset($dt);
 887         }
 888
 889         function make_local_datetime($link, $timestamp, $long, $owner_uid = false,
 890                                         $no_smart_dt = false) {
 891
 892                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 893                 if (!$timestamp) $timestamp = '1970-01-01 0:00';
 894
 895                 global $utc_tz;
 896                 global $tz_offset;
 897
 898                 # We store date in UTC internally
 899                 $dt = new DateTime($timestamp, $utc_tz);
 900
 901                 if ($tz_offset == -1) {
 902
 903                         $user_tz_string = get_pref($link, 'USER_TIMEZONE', $owner_uid);
 904
 905                         try {
 906                                 $user_tz = new DateTimeZone($user_tz_string);
 907                         } catch (Exception $e) {
 908                                 $user_tz = $utc_tz;
 909                         }
 910
 911                         $tz_offset = $user_tz->getOffset($dt);
 912                 }
 913
 914                 $user_timestamp = $dt->format('U') + $tz_offset;
 915
 916                 if (!$no_smart_dt) {
 917                         return smart_date_time($link, $user_timestamp,
 918                                 $tz_offset, $owner_uid);
 919                 } else {
 920                         if ($long)
 921                                 $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 922                         else
 923                                 $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 924
 925                         return date($format, $user_timestamp);
 926                 }
 927         }
 928
 929         function smart_date_time($link, $timestamp, $tz_offset = 0, $owner_uid = false) {
 930                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 931
 932                 if (date("Y.m.d", $timestamp) == date("Y.m.d", time() + $tz_offset)) {
 933                         return date("G:i", $timestamp);
 934                 } else if (date("Y", $timestamp) == date("Y", time() + $tz_offset)) {
 935                         $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 936                         return date($format, $timestamp);
 937                 } else {
 938                         $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 939                         return date($format, $timestamp);
 940                 }
 941         }
 942
 943         function sql_bool_to_bool($s) {
 944                 if ($s == "t" || $s == "1" || $s == "true") {
 945                         return true;
 946                 } else {
 947                         return false;
 948                 }
 949         }
 950
 951         function bool_to_sql_bool($s) {
 952                 if ($s) {
 953                         return "true";
 954                 } else {
 955                         return "false";
 956                 }
 957         }
 958
 959         // Session caching removed due to causing wrong redirects to upgrade
 960         // script when get_schema_version() is called on an obsolete session
 961         // created on a previous schema version.
 962         function get_schema_version($link, $nocache = false) {
 963                 global $schema_version;
 964
 965                 if (!$schema_version) {
 966                         $result = db_query($link, "SELECT schema_version FROM ttrss_version");
 967                         $version = db_fetch_result($result, 0, "schema_version");
 968                         $schema_version = $version;
 969                         return $version;
 970                 } else {
 971                         return $schema_version;
 972                 }
 973         }
 974
 975         function sanity_check($link) {
 976                 require_once 'errors.php';
 977
 978                 $error_code = 0;
 979                 $schema_version = get_schema_version($link, true);
 980
 981                 if ($schema_version != SCHEMA_VERSION) {
 982                         $error_code = 5;
 983                 }
 984
 985                 if (DB_TYPE == "mysql") {
 986                         $result = db_query($link, "SELECT true", false);
 987                         if (db_num_rows($result) != 1) {
 988                                 $error_code = 10;
 989                         }
 990                 }
 991
 992                 if (db_escape_string("testTEST") != "testTEST") {
 993                         $error_code = 12;
 994                 }
 995
 996                 return array("code" => $error_code, "message" => $ERRORS[$error_code]);
 997         }
 998
 999         function file_is_locked($filename) {
1000                 if (function_exists('flock')) {
1001                         $fp = @fopen(LOCK_DIRECTORY . "/$filename", "r");
1002                         if ($fp) {
1003                                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1004                                         flock($fp, LOCK_UN);
1005                                         fclose($fp);
1006                                         return false;
1007                                 }
1008                                 fclose($fp);
1009                                 return true;
1010                         } else {
1011                                 return false;
1012                         }
1013                 }
1014                 return true; // consider the file always locked and skip the test
1015         }
1016
1017         function make_lockfile($filename) {
1018                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
1019
1020                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1021                         if (function_exists('posix_getpid')) {
1022                                 fwrite($fp, posix_getpid() . "\n");
1023                         }
1024                         return $fp;
1025                 } else {
1026                         return false;
1027                 }
1028         }
1029
1030         function make_stampfile($filename) {
1031                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
1032
1033                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1034                         fwrite($fp, time() . "\n");
1035                         flock($fp, LOCK_UN);
1036                         fclose($fp);
1037                         return true;
1038                 } else {
1039                         return false;
1040                 }
1041         }
1042
1043         function sql_random_function() {
1044                 if (DB_TYPE == "mysql") {
1045                         return "RAND()";
1046                 } else {
1047                         return "RANDOM()";
1048                 }
1049         }
1050
1051         function catchup_feed($link, $feed, $cat_view, $owner_uid = false, $max_id = false) {
1052
1053                         if (!$owner_uid) $owner_uid = $_SESSION['uid'];
1054
1055                         //if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
1056
1057                         $ref_check_qpart = ($max_id &&
1058                                 !get_pref($link, 'REVERSE_HEADLINES')) ? "ref_id <= '$max_id'" : "true";
1059
1060                         if (is_numeric($feed)) {
1061                                 if ($cat_view) {
1062
1063                                         if ($feed >= 0) {
1064
1065                                                 if ($feed > 0) {
1066                                                         $children = getChildCategories($link, $feed, $owner_uid);
1067                                                         array_push($children, $feed);
1068
1069                                                         $children = join(",", $children);
1070
1071                                                         $cat_qpart = "cat_id IN ($children)";
1072                                                 } else {
1073                                                         $cat_qpart = "cat_id IS NULL";
1074                                                 }
1075
1076                                                 db_query($link, "UPDATE ttrss_user_entries
1077                                                         SET unread = false,last_read = NOW()
1078                                                         WHERE feed_id IN (SELECT id FROM ttrss_feeds WHERE $cat_qpart)
1079                                                         AND $ref_check_qpart
1080                                                         AND owner_uid = $owner_uid");
1081
1082                                         } else if ($feed == -2) {
1083
1084                                                 db_query($link, "UPDATE ttrss_user_entries
1085                                                         SET unread = false,last_read = NOW() WHERE (SELECT COUNT(*)
1086                                                                 FROM ttrss_user_labels2 WHERE article_id = ref_id) > 0
1087                                                                 AND $ref_check_qpart
1088                                                                 AND unread = true AND owner_uid = $owner_uid");
1089                                         }
1090
1091                                 } else if ($feed > 0) {
1092
1093                                         db_query($link, "UPDATE ttrss_user_entries
1094                                                         SET unread = false,last_read = NOW()
1095                                                         WHERE feed_id = '$feed'
1096                                                         AND $ref_check_qpart
1097                                                         AND owner_uid = $owner_uid");
1098
1099                                 } else if ($feed < 0 && $feed > -10) { // special, like starred
1100
1101                                         if ($feed == -1) {
1102                                                 db_query($link, "UPDATE ttrss_user_entries
1103                                                         SET unread = false,last_read = NOW()
1104                                                         WHERE marked = true
1105                                                         AND $ref_check_qpart
1106                                                         AND owner_uid = $owner_uid");
1107                                         }
1108
1109                                         if ($feed == -2) {
1110                                                 db_query($link, "UPDATE ttrss_user_entries
1111                                                         SET unread = false,last_read = NOW()
1112                                                         WHERE published = true
1113                                                         AND $ref_check_qpart
1114                                                         AND owner_uid = $owner_uid");
1115                                         }
1116
1117                                         if ($feed == -3) {
1118
1119                                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE");
1120
1121                                                 if (DB_TYPE == "pgsql") {
1122                                                         $match_part = "updated > NOW() - INTERVAL '$intl hour' ";
1123                                                 } else {
1124                                                         $match_part = "updated > DATE_SUB(NOW(),
1125                                                                 INTERVAL $intl HOUR) ";
1126                                                 }
1127
1128                                                 $result = db_query($link, "SELECT id FROM ttrss_entries,
1129                                                         ttrss_user_entries WHERE $match_part AND
1130                                                         unread = true AND
1131                                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
1132                                                         owner_uid = $owner_uid");
1133
1134                                                 $affected_ids = array();
1135
1136                                                 while ($line = db_fetch_assoc($result)) {
1137                                                         array_push($affected_ids, $line["id"]);
1138                                                 }
1139
1140                                                 catchupArticlesById($link, $affected_ids, 0);
1141                                         }
1142
1143                                         if ($feed == -4) {
1144                                                 db_query($link, "UPDATE ttrss_user_entries
1145                                                         SET unread = false,last_read = NOW()
1146                                                         WHERE $ref_check_qpart AND owner_uid = $owner_uid");
1147                                         }
1148
1149                                 } else if ($feed < -10) { // label
1150
1151                                         $label_id = -$feed - 11;
1152
1153                                         db_query($link, "UPDATE ttrss_user_entries, ttrss_user_labels2
1154                                                 SET unread = false, last_read = NOW()
1155                                                         WHERE label_id = '$label_id' AND unread = true
1156                                                         AND $ref_check_qpart
1157                                                         AND owner_uid = '$owner_uid' AND ref_id = article_id");
1158
1159                                 }
1160
1161                                 ccache_update($link, $feed, $owner_uid, $cat_view);
1162
1163                         } else { // tag
1164                                 db_query($link, "BEGIN");
1165
1166                                 $tag_name = db_escape_string($feed);
1167
1168                                 $result = db_query($link, "SELECT post_int_id FROM ttrss_tags
1169                                         WHERE tag_name = '$tag_name' AND owner_uid = $owner_uid");
1170
1171                                 while ($line = db_fetch_assoc($result)) {
1172                                         db_query($link, "UPDATE ttrss_user_entries SET
1173                                                 unread = false, last_read = NOW()
1174                                                 WHERE $ref_check_qpart AND int_id = " . $line["post_int_id"]);
1175                                 }
1176                                 db_query($link, "COMMIT");
1177                         }
1178         }
1179
1180         function getAllCounters($link, $omode = "flc", $active_feed = false) {
1181
1182                 if (!$omode) $omode = "flc";
1183
1184                 $data = getGlobalCounters($link);
1185
1186                 $data = array_merge($data, getVirtCounters($link));
1187
1188                 if (strchr($omode, "l")) $data = array_merge($data, getLabelCounters($link));
1189                 if (strchr($omode, "f")) $data = array_merge($data, getFeedCounters($link, $active_feed));
1190                 if (strchr($omode, "t")) $data = array_merge($data, getTagCounters($link));
1191                 if (strchr($omode, "c")) $data = array_merge($data, getCategoryCounters($link));
1192
1193                 return $data;
1194         }
1195
1196         function getCategoryTitle($link, $cat_id) {
1197
1198                 if ($cat_id == -1) {
1199                         return __("Special");
1200                 } else if ($cat_id == -2) {
1201                         return __("Labels");
1202                 } else {
1203
1204                         $result = db_query($link, "SELECT title FROM ttrss_feed_categories WHERE
1205                                 id = '$cat_id'");
1206
1207                         if (db_num_rows($result) == 1) {
1208                                 return db_fetch_result($result, 0, "title");
1209                         } else {
1210                                 return __("Uncategorized");
1211                         }
1212                 }
1213         }
1214
1215
1216         function getCategoryCounters($link) {
1217                 $ret_arr = array();
1218
1219                 /* Labels category */
1220
1221                 $cv = array("id" => -2, "kind" => "cat",
1222                         "counter" => getCategoryUnread($link, -2));
1223
1224                 array_push($ret_arr, $cv);
1225
1226                 $result = db_query($link, "SELECT id AS cat_id, value AS unread,
1227                         (SELECT COUNT(id) FROM ttrss_feed_categories AS c2
1228                                 WHERE c2.parent_cat = ttrss_feed_categories.id) AS num_children
1229                         FROM ttrss_feed_categories, ttrss_cat_counters_cache
1230                         WHERE ttrss_cat_counters_cache.feed_id = id AND
1231                         ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid AND
1232                         ttrss_feed_categories.owner_uid = " . $_SESSION["uid"]);
1233
1234                 while ($line = db_fetch_assoc($result)) {
1235                         $line["cat_id"] = (int) $line["cat_id"];
1236
1237                         if ($line["num_children"] > 0) {
1238                                 $child_counter = getCategoryChildrenUnread($link, $line["cat_id"], $_SESSION["uid"]);
1239                         } else {
1240                                 $child_counter = 0;
1241                         }
1242
1243                         $cv = array("id" => $line["cat_id"], "kind" => "cat",
1244                                 "counter" => $line["unread"] + $child_counter);
1245
1246                         array_push($ret_arr, $cv);
1247                 }
1248
1249                 /* Special case: NULL category doesn't actually exist in the DB */
1250
1251                 $cv = array("id" => 0, "kind" => "cat",
1252                         "counter" => (int) ccache_find($link, 0, $_SESSION["uid"], true));
1253
1254                 array_push($ret_arr, $cv);
1255
1256                 return $ret_arr;
1257         }
1258
1259         // only accepts real cats (>= 0)
1260         function getCategoryChildrenUnread($link, $cat, $owner_uid = false) {
1261                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1262
1263                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories WHERE parent_cat = '$cat'
1264                                 AND owner_uid = $owner_uid");
1265
1266                 $unread = 0;
1267
1268                 while ($line = db_fetch_assoc($result)) {
1269                         $unread += getCategoryUnread($link, $line["id"], $owner_uid);
1270                         $unread += getCategoryChildrenUnread($link, $line["id"], $owner_uid);
1271                 }
1272
1273                 return $unread;
1274         }
1275
1276         function getCategoryUnread($link, $cat, $owner_uid = false) {
1277
1278                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1279
1280                 if ($cat >= 0) {
1281
1282                         if ($cat != 0) {
1283                                 $cat_query = "cat_id = '$cat'";
1284                         } else {
1285                                 $cat_query = "cat_id IS NULL";
1286                         }
1287
1288                         $result = db_query($link, "SELECT id FROM ttrss_feeds WHERE $cat_query
1289                                         AND owner_uid = " . $owner_uid);
1290
1291                         $cat_feeds = array();
1292                         while ($line = db_fetch_assoc($result)) {
1293                                 array_push($cat_feeds, "feed_id = " . $line["id"]);
1294                         }
1295
1296                         if (count($cat_feeds) == 0) return 0;
1297
1298                         $match_part = implode(" OR ", $cat_feeds);
1299
1300                         $result = db_query($link, "SELECT COUNT(int_id) AS unread
1301                                 FROM ttrss_user_entries
1302                                 WHERE   unread = true AND ($match_part)
1303                                 AND owner_uid = " . $owner_uid);
1304
1305                         $unread = 0;
1306
1307                         # this needs to be rewritten
1308                         while ($line = db_fetch_assoc($result)) {
1309                                 $unread += $line["unread"];
1310                         }
1311
1312                         return $unread;
1313                 } else if ($cat == -1) {
1314                         return getFeedUnread($link, -1) + getFeedUnread($link, -2) + getFeedUnread($link, -3) + getFeedUnread($link, 0);
1315                 } else if ($cat == -2) {
1316
1317                         $result = db_query($link, "
1318                                 SELECT COUNT(unread) AS unread FROM
1319                                         ttrss_user_entries, ttrss_user_labels2
1320                                 WHERE article_id = ref_id AND unread = true
1321                                         AND ttrss_user_entries.owner_uid = '$owner_uid'");
1322
1323                         $unread = db_fetch_result($result, 0, "unread");
1324
1325                         return $unread;
1326
1327                 }
1328         }
1329
1330         function getFeedUnread($link, $feed, $is_cat = false) {
1331                 return getFeedArticles($link, $feed, $is_cat, true, $_SESSION["uid"]);
1332         }
1333
1334         function getLabelUnread($link, $label_id, $owner_uid = false) {
1335                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1336
1337                 $result = db_query($link, "SELECT COUNT(ref_id) AS unread FROM ttrss_user_entries, ttrss_user_labels2
1338                         WHERE owner_uid = '$owner_uid' AND unread = true AND label_id = '$label_id' AND article_id = ref_id");
1339
1340                 if (db_num_rows($result) != 0) {
1341                         return db_fetch_result($result, 0, "unread");
1342                 } else {
1343                         return 0;
1344                 }
1345         }
1346
1347         function getFeedArticles($link, $feed, $is_cat = false, $unread_only = false,
1348                 $owner_uid = false) {
1349
1350                 $n_feed = (int) $feed;
1351                 $need_entries = false;
1352
1353                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1354
1355                 if ($unread_only) {
1356                         $unread_qpart = "unread = true";
1357                 } else {
1358                         $unread_qpart = "true";
1359                 }
1360
1361                 if ($is_cat) {
1362                         return getCategoryUnread($link, $n_feed, $owner_uid);
1363                 } else if ($n_feed == -6) {
1364                         return 0;
1365                 } else if ($feed != "0" && $n_feed == 0) {
1366
1367                         $feed = db_escape_string($feed);
1368
1369                         $result = db_query($link, "SELECT SUM((SELECT COUNT(int_id)
1370                                 FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1371                                         AND ref_id = id AND $unread_qpart)) AS count FROM ttrss_tags
1372                                 WHERE owner_uid = $owner_uid AND tag_name = '$feed'");
1373                         return db_fetch_result($result, 0, "count");
1374
1375                 } else if ($n_feed == -1) {
1376                         $match_part = "marked = true";
1377                 } else if ($n_feed == -2) {
1378                         $match_part = "published = true";
1379                 } else if ($n_feed == -3) {
1380                         $match_part = "unread = true AND score >= 0";
1381
1382                         $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
1383
1384                         if (DB_TYPE == "pgsql") {
1385                                 $match_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
1386                         } else {
1387                                 $match_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
1388                         }
1389
1390                         $need_entries = true;
1391
1392                 } else if ($n_feed == -4) {
1393                         $match_part = "true";
1394                 } else if ($n_feed >= 0) {
1395
1396                         if ($n_feed != 0) {
1397                                 $match_part = "feed_id = '$n_feed'";
1398                         } else {
1399                                 $match_part = "feed_id IS NULL";
1400                         }
1401
1402                 } else if ($feed < -10) {
1403
1404                         $label_id = -$feed - 11;
1405
1406                         return getLabelUnread($link, $label_id, $owner_uid);
1407
1408                 }
1409
1410                 if ($match_part) {
1411
1412                         if ($need_entries) {
1413                                 $from_qpart = "ttrss_user_entries,ttrss_entries";
1414                                 $from_where = "ttrss_entries.id = ttrss_user_entries.ref_id AND";
1415                         } else {
1416                                 $from_qpart = "ttrss_user_entries";
1417                         }
1418
1419                         $query = "SELECT count(int_id) AS unread
1420                                 FROM $from_qpart WHERE
1421                                 $unread_qpart AND $from_where ($match_part) AND ttrss_user_entries.owner_uid = $owner_uid";
1422
1423                         //echo "[$feed/$query]\n";
1424
1425                         $result = db_query($link, $query);
1426
1427                 } else {
1428
1429                         $result = db_query($link, "SELECT COUNT(post_int_id) AS unread
1430                                 FROM ttrss_tags,ttrss_user_entries,ttrss_entries
1431                                 WHERE tag_name = '$feed' AND post_int_id = int_id AND ref_id = ttrss_entries.id
1432                                 AND $unread_qpart AND ttrss_tags.owner_uid = " . $owner_uid);
1433                 }
1434
1435                 $unread = db_fetch_result($result, 0, "unread");
1436
1437                 return $unread;
1438         }
1439
1440         function getGlobalUnread($link, $user_id = false) {
1441
1442                 if (!$user_id) {
1443                         $user_id = $_SESSION["uid"];
1444                 }
1445
1446                 $result = db_query($link, "SELECT SUM(value) AS c_id FROM ttrss_counters_cache
1447                         WHERE owner_uid = '$user_id' AND feed_id > 0");
1448
1449                 $c_id = db_fetch_result($result, 0, "c_id");
1450
1451                 return $c_id;
1452         }
1453
1454         function getGlobalCounters($link, $global_unread = -1) {
1455                 $ret_arr = array();
1456
1457                 if ($global_unread == -1) {
1458                         $global_unread = getGlobalUnread($link);
1459                 }
1460
1461                 $cv = array("id" => "global-unread",
1462                         "counter" => (int) $global_unread);
1463
1464                 array_push($ret_arr, $cv);
1465
1466                 $result = db_query($link, "SELECT COUNT(id) AS fn FROM
1467                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1468
1469                 $subscribed_feeds = db_fetch_result($result, 0, "fn");
1470
1471                 $cv = array("id" => "subscribed-feeds",
1472                         "counter" => (int) $subscribed_feeds);
1473
1474                 array_push($ret_arr, $cv);
1475
1476                 return $ret_arr;
1477         }
1478
1479         function getTagCounters($link) {
1480
1481                 $ret_arr = array();
1482
1483                 $result = db_query($link, "SELECT tag_name,SUM((SELECT COUNT(int_id)
1484                         FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1485                                 AND ref_id = id AND unread = true)) AS count FROM ttrss_tags
1486                                 WHERE owner_uid = ".$_SESSION['uid']." GROUP BY tag_name
1487                                 ORDER BY count DESC LIMIT 55");
1488
1489                 $tags = array();
1490
1491                 while ($line = db_fetch_assoc($result)) {
1492                         $tags[$line["tag_name"]] += $line["count"];
1493                 }
1494
1495                 foreach (array_keys($tags) as $tag) {
1496                         $unread = $tags[$tag];
1497                         $tag = htmlspecialchars($tag);
1498
1499                         $cv = array("id" => $tag,
1500                                 "kind" => "tag",
1501                                 "counter" => $unread);
1502
1503                         array_push($ret_arr, $cv);
1504                 }
1505
1506                 return $ret_arr;
1507         }
1508
1509         function getVirtCounters($link) {
1510
1511                 $ret_arr = array();
1512
1513                 for ($i = 0; $i >= -4; $i--) {
1514
1515                         $count = getFeedUnread($link, $i);
1516
1517                         $cv = array("id" => $i,
1518                                 "counter" => (int) $count);
1519
1520 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1521 //                              $cv["xmsg"] = getFeedArticles($link, $i)." ".__("total");
1522
1523                         array_push($ret_arr, $cv);
1524                 }
1525
1526                 return $ret_arr;
1527         }
1528
1529         function getLabelCounters($link, $descriptions = false) {
1530
1531                 $ret_arr = array();
1532
1533                 $owner_uid = $_SESSION["uid"];
1534
1535                 $result = db_query($link, "SELECT id, caption FROM ttrss_labels2
1536                         WHERE owner_uid = '$owner_uid'");
1537
1538                 while ($line = db_fetch_assoc($result)) {
1539
1540                         $id = -$line["id"] - 11;
1541
1542                         $label_name = $line["caption"];
1543                         $count = getFeedUnread($link, $id);
1544
1545                         $cv = array("id" => $id,
1546                                 "counter" => (int) $count);
1547
1548                         if ($descriptions)
1549                                 $cv["description"] = $label_name;
1550
1551 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1552 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1553
1554                         array_push($ret_arr, $cv);
1555                 }
1556
1557                 return $ret_arr;
1558         }
1559
1560         function getFeedCounters($link, $active_feed = false) {
1561
1562                 $ret_arr = array();
1563
1564                 $query = "SELECT ttrss_feeds.id,
1565                                 ttrss_feeds.title,
1566                                 ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
1567                                 last_error, value AS count
1568                         FROM ttrss_feeds, ttrss_counters_cache
1569                         WHERE ttrss_feeds.owner_uid = ".$_SESSION["uid"]."
1570                                 AND ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid
1571                                 AND ttrss_counters_cache.feed_id = id";
1572
1573                 $result = db_query($link, $query);
1574                 $fctrs_modified = false;
1575
1576                 while ($line = db_fetch_assoc($result)) {
1577
1578                         $id = $line["id"];
1579                         $count = $line["count"];
1580                         $last_error = htmlspecialchars($line["last_error"]);
1581
1582                         $last_updated = make_local_datetime($link, $line['last_updated'], false);
1583
1584                         $has_img = feed_has_icon($id);
1585
1586                         if (date('Y') - date('Y', strtotime($line['last_updated'])) > 2)
1587                                 $last_updated = '';
1588
1589                         $cv = array("id" => $id,
1590                                 "updated" => $last_updated,
1591                                 "counter" => (int) $count,
1592                                 "has_img" => (int) $has_img);
1593
1594                         if ($last_error)
1595                                 $cv["error"] = $last_error;
1596
1597 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1598 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1599
1600                         if ($active_feed && $id == $active_feed)
1601                                 $cv["title"] = truncate_string($line["title"], 30);
1602
1603                         array_push($ret_arr, $cv);
1604
1605                 }
1606
1607                 return $ret_arr;
1608         }
1609
1610         function get_pgsql_version($link) {
1611                 $result = db_query($link, "SELECT version() AS version");
1612                 $version = explode(" ", db_fetch_result($result, 0, "version"));
1613                 return $version[1];
1614         }
1615
1616         /**
1617          * @return array (code => Status code, message => error message if available)
1618          *
1619          *                 0 - OK, Feed already exists
1620          *                 1 - OK, Feed added
1621          *                 2 - Invalid URL
1622          *                 3 - URL content is HTML, no feeds available
1623          *                 4 - URL content is HTML which contains multiple feeds.
1624          *                     Here you should call extractfeedurls in rpc-backend
1625          *                     to get all possible feeds.
1626          *                 5 - Couldn't download the URL content.
1627          */
1628         function subscribe_to_feed($link, $url, $cat_id = 0,
1629                         $auth_login = '', $auth_pass = '', $need_auth = false) {
1630
1631                 global $fetch_last_error;
1632
1633                 require_once "include/rssfuncs.php";
1634
1635                 $url = fix_url($url);
1636
1637                 if (!$url || !validate_feed_url($url)) return array("code" => 2);
1638
1639                 $update_method = 0;
1640
1641                 $contents = @fetch_file_contents($url, false, $auth_login, $auth_pass);
1642
1643                 if (!$contents) {
1644                         return array("code" => 5, "message" => $fetch_last_error);
1645                 }
1646
1647                 if (is_html($contents)) {
1648                         $feedUrls = get_feeds_from_html($url, $contents);
1649
1650                         if (count($feedUrls) == 0) {
1651                                 return array("code" => 3);
1652                         } else if (count($feedUrls) > 1) {
1653                                 return array("code" => 4, "feeds" => $feedUrls);
1654                         }
1655                         //use feed url as new URL
1656                         $url = key($feedUrls);
1657                 }
1658
1659                 if ($cat_id == "0" || !$cat_id) {
1660                         $cat_qpart = "NULL";
1661                 } else {
1662                         $cat_qpart = "'$cat_id'";
1663                 }
1664
1665                 $result = db_query($link,
1666                         "SELECT id FROM ttrss_feeds
1667                         WHERE feed_url = '$url' AND owner_uid = ".$_SESSION["uid"]);
1668
1669                 if (db_num_rows($result) == 0) {
1670                         $result = db_query($link,
1671                                 "INSERT INTO ttrss_feeds
1672                                         (owner_uid,feed_url,title,cat_id, auth_login,auth_pass,update_method)
1673                                 VALUES ('".$_SESSION["uid"]."', '$url',
1674                                 '[Unknown]', $cat_qpart, '$auth_login', '$auth_pass', '$update_method')");
1675
1676                         $result = db_query($link,
1677                                 "SELECT id FROM ttrss_feeds WHERE feed_url = '$url'
1678                                         AND owner_uid = " . $_SESSION["uid"]);
1679
1680                         $feed_id = db_fetch_result($result, 0, "id");
1681
1682                         if ($feed_id) {
1683                                 update_rss_feed($link, $feed_id, true);
1684                         }
1685
1686                         return array("code" => 1);
1687                 } else {
1688                         return array("code" => 0);
1689                 }
1690         }
1691
1692         function print_feed_select($link, $id, $default_id = "",
1693                 $attributes = "", $include_all_feeds = true,
1694                 $root_id = false, $nest_level = 0) {
1695
1696                 if (!$root_id) {
1697                         print "<select id=\"$id\" name=\"$id\" $attributes>";
1698                         if ($include_all_feeds) {
1699                                 $is_selected = ("0" == $default_id) ? "selected=\"1\"" : "";
1700                                 print "<option $is_selected value=\"0\">".__('All feeds')."</option>";
1701                         }
1702                 }
1703
1704                 if (get_pref($link, 'ENABLE_FEED_CATS')) {
1705
1706                         if ($root_id)
1707                                 $parent_qpart = "parent_cat = '$root_id'";
1708                         else
1709                                 $parent_qpart = "parent_cat IS NULL";
1710
1711                         $result = db_query($link, "SELECT id,title,
1712                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1713                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1714                                 FROM ttrss_feed_categories
1715                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1716
1717                         while ($line = db_fetch_assoc($result)) {
1718
1719                                 for ($i = 0; $i < $nest_level; $i++)
1720                                         $line["title"] = " - " . $line["title"];
1721
1722                                 $is_selected = ("CAT:".$line["id"] == $default_id) ? "selected=\"1\"" : "";
1723
1724                                 printf("<option $is_selected value='CAT:%d'>%s</option>",
1725                                         $line["id"], htmlspecialchars($line["title"]));
1726
1727                                 if ($line["num_children"] > 0)
1728                                         print_feed_select($link, $id, $default_id, $attributes,
1729                                                 $include_all_feeds, $line["id"], $nest_level+1);
1730
1731                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1732                                         WHERE cat_id = '".$line["id"]."' AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1733
1734                                 while ($fline = db_fetch_assoc($feed_result)) {
1735                                         $is_selected = ($fline["id"] == $default_id) ? "selected=\"1\"" : "";
1736
1737                                         $fline["title"] = " + " . $fline["title"];
1738
1739                                         for ($i = 0; $i < $nest_level; $i++)
1740                                                 $fline["title"] = " - " . $fline["title"];
1741
1742                                         printf("<option $is_selected value='%d'>%s</option>",
1743                                                 $fline["id"], htmlspecialchars($fline["title"]));
1744                                 }
1745                         }
1746
1747                         if (!$root_id) {
1748                                 $is_selected = ($default_id == "CAT:0") ? "selected=\"1\"" : "";
1749
1750                                 printf("<option $is_selected value='CAT:0'>%s</option>",
1751                                         __("Uncategorized"));
1752
1753                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1754                                         WHERE cat_id IS NULL AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1755
1756                                 while ($fline = db_fetch_assoc($feed_result)) {
1757                                         $is_selected = ($fline["id"] == $default_id && !$default_is_cat) ? "selected=\"1\"" : "";
1758
1759                                         $fline["title"] = " + " . $fline["title"];
1760
1761                                         for ($i = 0; $i < $nest_level; $i++)
1762                                                 $fline["title"] = " - " . $fline["title"];
1763
1764                                         printf("<option $is_selected value='%d'>%s</option>",
1765                                                 $fline["id"], htmlspecialchars($fline["title"]));
1766                                 }
1767                         }
1768
1769                 } else {
1770                         $result = db_query($link, "SELECT id,title FROM ttrss_feeds
1771                                 WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
1772
1773                         while ($line = db_fetch_assoc($result)) {
1774
1775                                 $is_selected = ($line["id"] == $default_id) ? "selected=\"1\"" : "";
1776
1777                                 printf("<option $is_selected value='%d'>%s</option>",
1778                                         $line["id"], htmlspecialchars($line["title"]));
1779                         }
1780                 }
1781
1782                 if (!$root_id) {
1783                         print "</select>";
1784                 }
1785         }
1786
1787         function print_feed_cat_select($link, $id, $default_id,
1788                 $attributes, $include_all_cats = true, $root_id = false, $nest_level = 0) {
1789
1790                         if (!$root_id) {
1791                                         print "<select id=\"$id\" name=\"$id\" default=\"$default_id\" onchange=\"catSelectOnChange(this)\" $attributes>";
1792                         }
1793
1794                         if ($root_id)
1795                                 $parent_qpart = "parent_cat = '$root_id'";
1796                         else
1797                                 $parent_qpart = "parent_cat IS NULL";
1798
1799                         $result = db_query($link, "SELECT id,title,
1800                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1801                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1802                                 FROM ttrss_feed_categories
1803                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1804
1805                         while ($line = db_fetch_assoc($result)) {
1806                                 if ($line["id"] == $default_id) {
1807                                         $is_selected = "selected=\"1\"";
1808                                 } else {
1809                                         $is_selected = "";
1810                                 }
1811
1812                                 for ($i = 0; $i < $nest_level; $i++)
1813                                         $line["title"] = " - " . $line["title"];
1814
1815                                 if ($line["title"])
1816                                         printf("<option $is_selected value='%d'>%s</option>",
1817                                                 $line["id"], htmlspecialchars($line["title"]));
1818
1819                                 if ($line["num_children"] > 0)
1820                                         print_feed_cat_select($link, $id, $default_id, $attributes,
1821                                                 $include_all_cats, $line["id"], $nest_level+1);
1822                         }
1823
1824                         if (!$root_id) {
1825                                 if ($include_all_cats) {
1826                                         if (db_num_rows($result) > 0) {
1827                                                 print "<option disabled=\"1\">--------</option>";
1828                                         }
1829
1830                                         if ($default_id == 0) {
1831                                                 $is_selected = "selected=\"1\"";
1832                                         } else {
1833                                                 $is_selected = "";
1834                                         }
1835
1836                                         print "<option $is_selected value=\"0\">".__('Uncategorized')."</option>";
1837                                 }
1838                                 print "</select>";
1839                         }
1840                 }
1841
1842         function checkbox_to_sql_bool($val) {
1843                 return ($val == "on") ? "true" : "false";
1844         }
1845
1846         function getFeedCatTitle($link, $id) {
1847                 if ($id == -1) {
1848                         return __("Special");
1849                 } else if ($id < -10) {
1850                         return __("Labels");
1851                 } else if ($id > 0) {
1852                         $result = db_query($link, "SELECT ttrss_feed_categories.title
1853                                 FROM ttrss_feeds, ttrss_feed_categories WHERE ttrss_feeds.id = '$id' AND
1854                                         cat_id = ttrss_feed_categories.id");
1855                         if (db_num_rows($result) == 1) {
1856                                 return db_fetch_result($result, 0, "title");
1857                         } else {
1858                                 return __("Uncategorized");
1859                         }
1860                 } else {
1861                         return "getFeedCatTitle($id) failed";
1862                 }
1863
1864         }
1865
1866         function getFeedIcon($id) {
1867                 switch ($id) {
1868                 case 0:
1869                         return "images/archive.png";
1870                         break;
1871                 case -1:
1872                         return "images/mark_set.png";
1873                         break;
1874                 case -2:
1875                         return "images/pub_set.png";
1876                         break;
1877                 case -3:
1878                         return "images/fresh.png";
1879                         break;
1880                 case -4:
1881                         return "images/tag.png";
1882                         break;
1883                 case -6:
1884                         return "images/recently_read.png";
1885                         break;
1886                 default:
1887                         if ($id < -10) {
1888                                 return "images/label.png";
1889                         } else {
1890                                 if (file_exists(ICONS_DIR . "/$id.ico"))
1891                                         return ICONS_URL . "/$id.ico";
1892                         }
1893                         break;
1894                 }
1895         }
1896
1897         function getFeedTitle($link, $id, $cat = false) {
1898                 if ($cat) {
1899                         return getCategoryTitle($link, $id);
1900                 } else if ($id == -1) {
1901                         return __("Starred articles");
1902                 } else if ($id == -2) {
1903                         return __("Published articles");
1904                 } else if ($id == -3) {
1905                         return __("Fresh articles");
1906                 } else if ($id == -4) {
1907                         return __("All articles");
1908                 } else if ($id === 0 || $id === "0") {
1909                         return __("Archived articles");
1910                 } else if ($id == -6) {
1911                         return __("Recently read");
1912                 } else if ($id < -10) {
1913                         $label_id = -$id - 11;
1914                         $result = db_query($link, "SELECT caption FROM ttrss_labels2 WHERE id = '$label_id'");
1915                         if (db_num_rows($result) == 1) {
1916                                 return db_fetch_result($result, 0, "caption");
1917                         } else {
1918                                 return "Unknown label ($label_id)";
1919                         }
1920
1921                 } else if (is_numeric($id) && $id > 0) {
1922                         $result = db_query($link, "SELECT title FROM ttrss_feeds WHERE id = '$id'");
1923                         if (db_num_rows($result) == 1) {
1924                                 return db_fetch_result($result, 0, "title");
1925                         } else {
1926                                 return "Unknown feed ($id)";
1927                         }
1928                 } else {
1929                         return $id;
1930                 }
1931         }
1932
1933         function make_init_params($link) {
1934                 $params = array();
1935
1936                 $params["theme"] = get_user_theme($link);
1937                 $params["theme_options"] = get_user_theme_options($link);
1938
1939                 $params["sign_progress"] = theme_image($link, "images/indicator_white.gif");
1940                 $params["sign_progress_tiny"] = theme_image($link, "images/indicator_tiny.gif");
1941                 $params["sign_excl"] = theme_image($link, "images/sign_excl.png");
1942                 $params["sign_info"] = theme_image($link, "images/sign_info.png");
1943
1944                 foreach (array("ON_CATCHUP_SHOW_NEXT_FEED", "HIDE_READ_FEEDS",
1945                         "ENABLE_FEED_CATS", "FEEDS_SORT_BY_UNREAD", "CONFIRM_FEED_CATCHUP",
1946                         "CDM_AUTO_CATCHUP", "FRESH_ARTICLE_MAX_AGE", "DEFAULT_ARTICLE_LIMIT",
1947                         "HIDE_READ_SHOWS_SPECIAL", "COMBINED_DISPLAY_MODE") as $param) {
1948
1949                                  $params[strtolower($param)] = (int) get_pref($link, $param);
1950                  }
1951
1952                 $params["icons_url"] = ICONS_URL;
1953                 $params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
1954                 $params["default_view_mode"] = get_pref($link, "_DEFAULT_VIEW_MODE");
1955                 $params["default_view_limit"] = (int) get_pref($link, "_DEFAULT_VIEW_LIMIT");
1956                 $params["default_view_order_by"] = get_pref($link, "_DEFAULT_VIEW_ORDER_BY");
1957                 $params["bw_limit"] = (int) $_SESSION["bw_limit"];
1958
1959                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
1960                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1961
1962                 $max_feed_id = db_fetch_result($result, 0, "mid");
1963                 $num_feeds = db_fetch_result($result, 0, "nf");
1964
1965                 $params["max_feed_id"] = (int) $max_feed_id;
1966                 $params["num_feeds"] = (int) $num_feeds;
1967
1968                 $params["collapsed_feedlist"] = (int) get_pref($link, "_COLLAPSED_FEEDLIST");
1969
1970                 $params["csrf_token"] = $_SESSION["csrf_token"];
1971
1972                 return $params;
1973         }
1974
1975         function make_runtime_info($link) {
1976                 $data = array();
1977
1978                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
1979                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1980
1981                 $max_feed_id = db_fetch_result($result, 0, "mid");
1982                 $num_feeds = db_fetch_result($result, 0, "nf");
1983
1984                 $data["max_feed_id"] = (int) $max_feed_id;
1985                 $data["num_feeds"] = (int) $num_feeds;
1986
1987                 $data['last_article_id'] = getLastArticleId($link);
1988                 $data['cdm_expanded'] = get_pref($link, 'CDM_EXPANDED');
1989
1990                 if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
1991
1992                         $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
1993
1994                         if (time() - $_SESSION["daemon_stamp_check"] > 30) {
1995
1996                                 $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
1997
1998                                 if ($stamp) {
1999                                         $stamp_delta = time() - $stamp;
2000
2001                                         if ($stamp_delta > 1800) {
2002                                                 $stamp_check = 0;
2003                                         } else {
2004                                                 $stamp_check = 1;
2005                                                 $_SESSION["daemon_stamp_check"] = time();
2006                                         }
2007
2008                                         $data['daemon_stamp_ok'] = $stamp_check;
2009
2010                                         $stamp_fmt = date("Y.m.d, G:i", $stamp);
2011
2012                                         $data['daemon_stamp'] = $stamp_fmt;
2013                                 }
2014                         }
2015                 }
2016
2017                 if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
2018                                 $new_version_details = @check_for_update($link);
2019
2020                                 $data['new_version_available'] = (int) ($new_version_details != false);
2021
2022                                 $_SESSION["last_version_check"] = time();
2023                                 $_SESSION["version_data"] = $new_version_details;
2024                 }
2025
2026                 return $data;
2027         }
2028
2029         function search_to_sql($link, $search, $match_on) {
2030
2031                 $search_query_part = "";
2032
2033                 $keywords = explode(" ", $search);
2034                 $query_keywords = array();
2035
2036                 foreach ($keywords as $k) {
2037                         if (strpos($k, "-") === 0) {
2038                                 $k = substr($k, 1);
2039                                 $not = "NOT";
2040                         } else {
2041                                 $not = "";
2042                         }
2043
2044                         $commandpair = explode(":", mb_strtolower($k), 2);
2045
2046                         if ($commandpair[0] == "note" && $commandpair[1]) {
2047
2048                                 if ($commandpair[1] == "true")
2049                                         array_push($query_keywords, "($not (note IS NOT NULL AND note != ''))");
2050                                 else
2051                                         array_push($query_keywords, "($not (note IS NULL OR note = ''))");
2052
2053                         } else if ($commandpair[0] == "star" && $commandpair[1]) {
2054
2055                                 if ($commandpair[1] == "true")
2056                                         array_push($query_keywords, "($not (marked = true))");
2057                                 else
2058                                         array_push($query_keywords, "($not (marked = false))");
2059
2060                         } else if ($commandpair[0] == "pub" && $commandpair[1]) {
2061
2062                                 if ($commandpair[1] == "true")
2063                                         array_push($query_keywords, "($not (published = true))");
2064                                 else
2065                                         array_push($query_keywords, "($not (published = false))");
2066
2067                         } else if (strpos($k, "@") === 0) {
2068
2069                                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $_SESSION['uid']);
2070                                 $orig_ts = strtotime(substr($k, 1));
2071                                 $k = date("Y-m-d", convert_timestamp($orig_ts, $user_tz_string, 'UTC'));
2072
2073                                 //$k = date("Y-m-d", strtotime(substr($k, 1)));
2074
2075                                 array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
2076                         } else if ($match_on == "both") {
2077                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2078                                                 OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2079                         } else if ($match_on == "title") {
2080                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%'))");
2081                         } else if ($match_on == "content") {
2082                                 array_push($query_keywords, "(UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2083                         }
2084                 }
2085
2086                 $search_query_part = implode("AND", $query_keywords);
2087
2088                 return $search_query_part;
2089         }
2090
2091         function getParentCategories($link, $cat, $owner_uid) {
2092                 $rv = array();
2093
2094                 $result = db_query($link, "SELECT parent_cat FROM ttrss_feed_categories
2095                         WHERE id = '$cat' AND parent_cat IS NOT NULL AND owner_uid = $owner_uid");
2096
2097                 while ($line = db_fetch_assoc($result)) {
2098                         array_push($rv, $line["parent_cat"]);
2099                         $rv = array_merge($rv, getParentCategories($link, $line["parent_cat"], $owner_uid));
2100                 }
2101
2102                 return $rv;
2103         }
2104
2105         function getChildCategories($link, $cat, $owner_uid) {
2106                 $rv = array();
2107
2108                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories
2109                         WHERE parent_cat = '$cat' AND owner_uid = $owner_uid");
2110
2111                 while ($line = db_fetch_assoc($result)) {
2112                         array_push($rv, $line["id"]);
2113                         $rv = array_merge($rv, getChildCategories($link, $line["id"], $owner_uid));
2114                 }
2115
2116                 return $rv;
2117         }
2118
2119         function queryFeedHeadlines($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, $include_children = false) {
2120
2121                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2122
2123                 $ext_tables_part = "";
2124
2125                         if ($search) {
2126
2127                                 if (SPHINX_ENABLED) {
2128                                         $ids = join(",", @sphinx_search($search, 0, 500));
2129
2130                                         if ($ids)
2131                                                 $search_query_part = "ref_id IN ($ids) AND ";
2132                                         else
2133                                                 $search_query_part = "ref_id = -1 AND ";
2134
2135                                 } else {
2136                                         $search_query_part = search_to_sql($link, $search, $match_on);
2137                                         $search_query_part .= " AND ";
2138                                 }
2139
2140                         } else {
2141                                 $search_query_part = "";
2142                         }
2143
2144                         if ($filter) {
2145
2146                                 if (DB_TYPE == "pgsql") {
2147                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '14 days' ";
2148                                 } else {
2149                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL 14 DAY) ";
2150                                 }
2151
2152                                 $override_order = "updated DESC";
2153
2154                                 $filter_query_part = filter_to_sql($link, $filter, $owner_uid);
2155
2156                                 // Try to check if SQL regexp implementation chokes on a valid regexp
2157                                 $result = db_query($link, "SELECT true AS true FROM ttrss_entries,
2158                                         ttrss_user_entries, ttrss_feeds, ttrss_feed_categories
2159                                         WHERE $filter_query_part LIMIT 1", false);
2160
2161                                 $test = db_fetch_result($result, 0, "true");
2162
2163                                 if (!$test) {
2164                                         $filter_query_part = "false AND";
2165                                 } else {
2166                                         $filter_query_part .= " AND";
2167                                 }
2168
2169                         } else {
2170                                 $filter_query_part = "";
2171                         }
2172
2173                         if ($since_id) {
2174                                 $since_id_part = "ttrss_entries.id > $since_id AND ";
2175                         } else {
2176                                 $since_id_part = "";
2177                         }
2178
2179                         $view_query_part = "";
2180
2181                         if ($view_mode == "adaptive" || $view_query_part == "noscores") {
2182                                 if ($search) {
2183                                         $view_query_part = " ";
2184                                 } else if ($feed != -1) {
2185                                         $unread = getFeedUnread($link, $feed, $cat_view);
2186
2187                                         if ($cat_view && $feed > 0 && $include_children)
2188                                                 $unread += getCategoryChildrenUnread($link, $feed);
2189
2190                                         if ($unread > 0) {
2191                                                 $view_query_part = " unread = true AND ";
2192                                         }
2193                                 }
2194                         }
2195
2196                         if ($view_mode == "marked") {
2197                                 $view_query_part = " marked = true AND ";
2198                         }
2199
2200                         if ($view_mode == "published") {
2201                                 $view_query_part = " published = true AND ";
2202                         }
2203
2204                         if ($view_mode == "unread") {
2205                                 $view_query_part = " unread = true AND ";
2206                         }
2207
2208                         if ($view_mode == "updated") {
2209                                 $view_query_part = " (last_read is null and unread = false) AND ";
2210                         }
2211
2212                         if ($limit > 0) {
2213                                 $limit_query_part = "LIMIT " . $limit;
2214                         }
2215
2216                         $allow_archived = false;
2217
2218                         $vfeed_query_part = "";
2219
2220                         // override query strategy and enable feed display when searching globally
2221                         if ($search && $search_mode == "all_feeds") {
2222                                 $query_strategy_part = "true";
2223                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2224                         /* tags */
2225                         } else if (!is_numeric($feed)) {
2226                                 $query_strategy_part = "true";
2227                                 $vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
2228                                         id = feed_id) as feed_title,";
2229                         } else if ($search && $search_mode == "this_cat") {
2230                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2231
2232                                 if ($feed > 0) {
2233                                         if ($include_children) {
2234                                                 $subcats = getChildCategories($link, $feed, $owner_uid);
2235                                                 array_push($subcats, $feed);
2236                                                 $cats_qpart = join(",", $subcats);
2237                                         } else {
2238                                                 $cats_qpart = $feed;
2239                                         }
2240
2241                                         $query_strategy_part = "ttrss_feeds.cat_id IN ($cats_qpart)";
2242
2243                                 } else {
2244                                         $query_strategy_part = "ttrss_feeds.cat_id IS NULL";
2245                                 }
2246
2247                         } else if ($feed > 0) {
2248
2249                                 if ($cat_view) {
2250
2251                                         if ($feed > 0) {
2252                                                 if ($include_children) {
2253                                                         # sub-cats
2254                                                         $subcats = getChildCategories($link, $feed, $owner_uid);
2255
2256                                                         array_push($subcats, $feed);
2257                                                         $query_strategy_part = "cat_id IN (".
2258                                                                         implode(",", $subcats).")";
2259
2260                                                 } else {
2261                                                         $query_strategy_part = "cat_id = '$feed'";
2262                                                 }
2263
2264                                         } else {
2265                                                 $query_strategy_part = "cat_id IS NULL";
2266                                         }
2267
2268                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2269
2270                                 } else {
2271                                         $query_strategy_part = "feed_id = '$feed'";
2272                                 }
2273                         } else if ($feed == 0 && !$cat_view) { // archive virtual feed
2274                                 $query_strategy_part = "feed_id IS NULL";
2275                                 $allow_archived = true;
2276                         } else if ($feed == 0 && $cat_view) { // uncategorized
2277                                 $query_strategy_part = "cat_id IS NULL AND feed_id IS NOT NULL";
2278                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2279                         } else if ($feed == -1) { // starred virtual feed
2280                                 $query_strategy_part = "marked = true";
2281                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2282                                 $allow_archived = true;
2283
2284                         } else if ($feed == -2) { // published virtual feed OR labels category
2285
2286                                 if (!$cat_view) {
2287                                         $query_strategy_part = "published = true";
2288                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2289                                         $allow_archived = true;
2290
2291                                         if (!$override_order) $override_order = "last_read DESC, updated DESC";
2292                                 } else {
2293                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2294
2295                                         $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2296
2297                                         $query_strategy_part = "ttrss_labels2.id = ttrss_user_labels2.label_id AND
2298                                                 ttrss_user_labels2.article_id = ref_id";
2299
2300                                 }
2301                         } else if ($feed == -6) { // recently read
2302                                 $query_strategy_part = "unread = false AND last_read IS NOT NULL";
2303                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2304                                 $allow_archived = true;
2305
2306                                 if (!$override_order) $override_order = "last_read DESC";
2307                         } else if ($feed == -3) { // fresh virtual feed
2308                                 $query_strategy_part = "unread = true AND score >= 0";
2309
2310                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
2311
2312                                 if (DB_TYPE == "pgsql") {
2313                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
2314                                 } else {
2315                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
2316                                 }
2317
2318                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2319                         } else if ($feed == -4) { // all articles virtual feed
2320                                 $query_strategy_part = "true";
2321                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2322                         } else if ($feed <= -10) { // labels
2323                                 $label_id = -$feed - 11;
2324
2325                                 $query_strategy_part = "label_id = '$label_id' AND
2326                                         ttrss_labels2.id = ttrss_user_labels2.label_id AND
2327                                         ttrss_user_labels2.article_id = ref_id";
2328
2329                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2330                                 $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2331                                 $allow_archived = true;
2332
2333                         } else {
2334                                 $query_strategy_part = "true";
2335                         }
2336
2337                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
2338                                 $date_sort_field = "updated";
2339                         } else {
2340                                 $date_sort_field = "date_entered";
2341                         }
2342
2343                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
2344                                 $order_by = "$date_sort_field";
2345                         } else {
2346                                 $order_by = "$date_sort_field DESC";
2347                         }
2348
2349                         if ($view_mode != "noscores") {
2350                                 $order_by = "score DESC, $order_by";
2351                         }
2352
2353                         if ($override_order) {
2354                                 $order_by = $override_order;
2355                         }
2356
2357                         $feed_title = "";
2358
2359                         if ($search) {
2360                                 $feed_title = T_sprintf("Search results: %s", $search);
2361                         } else {
2362                                 if ($cat_view) {
2363                                         $feed_title = getCategoryTitle($link, $feed);
2364                                 } else {
2365                                         if (is_numeric($feed) && $feed > 0) {
2366                                                 $result = db_query($link, "SELECT title,site_url,last_error
2367                                                         FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = $owner_uid");
2368
2369                                                 $feed_title = db_fetch_result($result, 0, "title");
2370                                                 $feed_site_url = db_fetch_result($result, 0, "site_url");
2371                                                 $last_error = db_fetch_result($result, 0, "last_error");
2372                                         } else {
2373                                                 $feed_title = getFeedTitle($link, $feed);
2374                                         }
2375                                 }
2376                         }
2377
2378                         $content_query_part = "content as content_preview, cached_content, ";
2379
2380                         if (is_numeric($feed)) {
2381
2382                                 if ($feed >= 0) {
2383                                         $feed_kind = "Feeds";
2384                                 } else {
2385                                         $feed_kind = "Labels";
2386                                 }
2387
2388                                 if ($limit_query_part) {
2389                                         $offset_query_part = "OFFSET $offset";
2390                                 }
2391
2392                                 // proper override_order applied above
2393                                 if ($vfeed_query_part && get_pref($link, 'VFEED_GROUP_BY_FEED', $owner_uid)) {
2394                                         if (!$override_order) {
2395                                                 $order_by = "ttrss_feeds.title, $order_by";
2396                                         } else {
2397                                                 $order_by = "ttrss_feeds.title, $override_order";
2398                                         }
2399                                 }
2400
2401                                 if (!$allow_archived) {
2402                                         $from_qpart = "ttrss_entries,ttrss_user_entries,ttrss_feeds$ext_tables_part";
2403                                         $feed_check_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
2404
2405                                 } else {
2406                                         $from_qpart = "ttrss_entries$ext_tables_part,ttrss_user_entries
2407                                                 LEFT JOIN ttrss_feeds ON (feed_id = ttrss_feeds.id)";
2408                                 }
2409
2410                                 $query = "SELECT DISTINCT
2411                                                 date_entered,
2412                                                 guid,
2413                                                 ttrss_entries.id,ttrss_entries.title,
2414                                                 updated,
2415                                                 label_cache,
2416                                                 tag_cache,
2417                                                 always_display_enclosures,
2418                                                 site_url,
2419                                                 note,
2420                                                 num_comments,
2421                                                 comments,
2422                                                 int_id,
2423                                                 unread,feed_id,marked,published,link,last_read,orig_feed_id,
2424                                                 ".SUBSTRING_FOR_DATE."(last_read,1,19) as last_read_noms,
2425                                                 $vfeed_query_part
2426                                                 $content_query_part
2427                                                 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated_noms,
2428                                                 author,score
2429                                         FROM
2430                                                 $from_qpart
2431                                         WHERE
2432                                         $feed_check_qpart
2433                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
2434                                         ttrss_user_entries.owner_uid = '$owner_uid' AND
2435                                         $search_query_part
2436                                         $filter_query_part
2437                                         $view_query_part
2438                                         $since_id_part
2439                                         $query_strategy_part ORDER BY $order_by
2440                                         $limit_query_part $offset_query_part";
2441
2442                                 if ($_REQUEST["debug"]) print $query;
2443
2444                                 $result = db_query($link, $query);
2445
2446                         } else {
2447                                 // browsing by tag
2448
2449                                 $select_qpart = "SELECT DISTINCT " .
2450                                                                 "date_entered," .
2451                                                                 "guid," .
2452                                                                 "note," .
2453                                                                 "ttrss_entries.id as id," .
2454                                                                 "title," .
2455                                                                 "updated," .
2456                                                                 "unread," .
2457                                                                 "feed_id," .
2458                                                                 "orig_feed_id," .
2459                                                                 "marked," .
2460                                                                 "num_comments, " .
2461                                                                 "comments, " .
2462                                                                 "tag_cache," .
2463                                                                 "label_cache," .
2464                                                                 "link," .
2465                                                                 "last_read," .
2466                                                                 SUBSTRING_FOR_DATE . "(last_read,1,19) as last_read_noms," .
2467                                                                 $since_id_part .
2468                                                                 $vfeed_query_part .
2469                                                                 $content_query_part .
2470                                                                 SUBSTRING_FOR_DATE . "(updated,1,19) as updated_noms," .
2471                                                                 "score ";
2472
2473                                 $feed_kind = "Tags";
2474                                 $all_tags = explode(",", $feed);
2475                                 if ($search_mode == 'any') {
2476                                         $tag_sql = "tag_name in (" . implode(", ", array_map("db_quote", $all_tags)) . ")";
2477                                         $from_qpart = " FROM ttrss_entries,ttrss_user_entries,ttrss_tags ";
2478                                         $where_qpart = " WHERE " .
2479                                                                    "ref_id = ttrss_entries.id AND " .
2480                                                                    "ttrss_user_entries.owner_uid = $owner_uid AND " .
2481                                                                    "post_int_id = int_id AND $tag_sql AND " .
2482                                                                    $view_query_part .
2483                                                                    $search_query_part .
2484                                                                    $query_strategy_part . " ORDER BY $order_by " .
2485                                                                    $limit_query_part;
2486
2487                                 } else {
2488                                         $i = 1;
2489                                         $sub_selects = array();
2490                                         $sub_ands = array();
2491                                         foreach ($all_tags as $term) {
2492                                                 array_push($sub_selects, "(SELECT post_int_id from ttrss_tags WHERE tag_name = " . db_quote($term) . " AND owner_uid = $owner_uid) as A$i");
2493                                                 $i++;
2494                                         }
2495                                         if ($i > 2) {
2496                                                 $x = 1;
2497                                                 $y = 2;
2498                                                 do {
2499                                                         array_push($sub_ands, "A$x.post_int_id = A$y.post_int_id");
2500                                                         $x++;
2501                                                         $y++;
2502                                                 } while ($y < $i);
2503                                         }
2504                                         array_push($sub_ands, "A1.post_int_id = ttrss_user_entries.int_id and ttrss_user_entries.owner_uid = $owner_uid");
2505                                         array_push($sub_ands, "ttrss_user_entries.ref_id = ttrss_entries.id");
2506                                         $from_qpart = " FROM " . implode(", ", $sub_selects) . ", ttrss_user_entries, ttrss_entries";
2507                                         $where_qpart = " WHERE " . implode(" AND ", $sub_ands);
2508                                 }
2509                                 //                              error_log("TAG SQL: " . $tag_sql);
2510                                 // $tag_sql = "tag_name = '$feed'";   DEFAULT way
2511
2512                                 //                              error_log("[". $select_qpart . "][" . $from_qpart . "][" .$where_qpart . "]");
2513                                 $result = db_query($link, $select_qpart . $from_qpart . $where_qpart);
2514                         }
2515
2516                         return array($result, $feed_title, $feed_site_url, $last_error);
2517
2518         }
2519
2520         function sanitize($link, $str, $force_strip_tags = false, $owner = false, $site_url = false) {
2521                 if (!$owner) $owner = $_SESSION["uid"];
2522
2523                 $res = trim($str); if (!$res) return '';
2524
2525                 $config = array('safe' => 1, 'deny_attribute' => 'style, width, height, class, id', 'comment' => 1, 'cdata' => 1);
2526                 $res = htmLawed($res, $config);
2527
2528                 if (get_pref($link, "STRIP_IMAGES", $owner)) {
2529                         $res = preg_replace('/<img[^>]+>/is', '', $res);
2530                 }
2531
2532                 if (strpos($res, "href=") === false)
2533                         $res = rewrite_urls($res);
2534
2535                 $charset_hack = '<head>
2536                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
2537                 </head>';
2538
2539                 $res = trim($res); if (!$res) return '';
2540
2541                 libxml_use_internal_errors(true);
2542
2543                 $doc = new DOMDocument();
2544                 $doc->loadHTML($charset_hack . $res);
2545                 $xpath = new DOMXPath($doc);
2546
2547                 $entries = $xpath->query('(//a[@href]|//img[@src])');
2548                 $br_inserted = 0;
2549
2550                 foreach ($entries as $entry) {
2551
2552                         if ($site_url) {
2553
2554                                 if ($entry->hasAttribute('href'))
2555                                         $entry->setAttribute('href',
2556                                                 rewrite_relative_url($site_url, $entry->getAttribute('href')));
2557
2558                                 if ($entry->hasAttribute('src'))
2559                                         if (preg_match('/^image.php\?i=[a-z0-9]+$/', $entry->getAttribute('src')) == 0)
2560                                                 $entry->setAttribute('src',
2561                                                         rewrite_relative_url($site_url, $entry->getAttribute('src')));
2562                         }
2563
2564                         if (strtolower($entry->nodeName) == "a") {
2565                                 $entry->setAttribute("target", "_blank");
2566                         }
2567
2568                         if (strtolower($entry->nodeName) == "img" && !$br_inserted) {
2569                                 $br = $doc->createElement("br");
2570
2571                                 if ($entry->parentNode->nextSibling) {
2572                                         $entry->parentNode->insertBefore($br, $entry->nextSibling);
2573                                         $br_inserted = 1;
2574                                 }
2575
2576                         }
2577                 }
2578
2579                 $node = $doc->getElementsByTagName('body')->item(0);
2580
2581                 return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
2582         }
2583
2584         /**
2585          * Send by mail a digest of last articles.
2586          *
2587          * @param mixed $link The database connection.
2588          * @param integer $limit The maximum number of articles by digest.
2589          * @return boolean Return false if digests are not enabled.
2590          */
2591         function send_headlines_digests($link, $debug = false) {
2592
2593                 require_once 'lib/phpmailer/class.phpmailer.php';
2594
2595                 $user_limit = 15; // amount of users to process (e.g. emails to send out)
2596                 $limit = 1000; // maximum amount of headlines to include
2597
2598                 if ($debug) _debug("Sending digests, batch of max $user_limit users, headline limit = $limit");
2599
2600                 if (DB_TYPE == "pgsql") {
2601                         $interval_query = "last_digest_sent < NOW() - INTERVAL '1 days'";
2602                 } else if (DB_TYPE == "mysql") {
2603                         $interval_query = "last_digest_sent < DATE_SUB(NOW(), INTERVAL 1 DAY)";
2604                 }
2605
2606                 $result = db_query($link, "SELECT id,email FROM ttrss_users
2607                                 WHERE email != '' AND (last_digest_sent IS NULL OR $interval_query)");
2608
2609                 while ($line = db_fetch_assoc($result)) {
2610
2611                         if (get_pref($link, 'DIGEST_ENABLE', $line['id'], false)) {
2612                                 $preferred_ts = strtotime(get_pref($link, 'DIGEST_PREFERRED_TIME', $line['id'], '00:00'));
2613
2614                                 // try to send digests within 2 hours of preferred time
2615                                 if ($preferred_ts && time() >= $preferred_ts &&
2616                                                 time() - $preferred_ts <= 7200) {
2617
2618                                         if ($debug) print "Sending digest for UID:" . $line['id'] . " - " . $line["email"] . " ... ";
2619
2620                                         $do_catchup = get_pref($link, 'DIGEST_CATCHUP', $line['id'], false);
2621
2622                                         global $tz_offset;
2623
2624                                         // reset tz_offset global to prevent tz cache clash between users
2625                                         $tz_offset = -1;
2626
2627                                         $tuple = prepare_headlines_digest($link, $line["id"], 1, $limit);
2628                                         $digest = $tuple[0];
2629                                         $headlines_count = $tuple[1];
2630                                         $affected_ids = $tuple[2];
2631                                         $digest_text = $tuple[3];
2632
2633                                         if ($headlines_count > 0) {
2634
2635                                                 $mail = new PHPMailer();
2636
2637                                                 $mail->PluginDir = "lib/phpmailer/";
2638                                                 $mail->SetLanguage("en", "lib/phpmailer/language/");
2639
2640                                                 $mail->CharSet = "UTF-8";
2641
2642                                                 $mail->From = SMTP_FROM_ADDRESS;
2643                                                 $mail->FromName = SMTP_FROM_NAME;
2644                                                 $mail->AddAddress($line["email"], $line["login"]);
2645
2646                                                 if (SMTP_HOST) {
2647                                                         $mail->Host = SMTP_HOST;
2648                                                         $mail->Mailer = "smtp";
2649                                                         $mail->SMTPAuth = SMTP_LOGIN != '';
2650                                                         $mail->Username = SMTP_LOGIN;
2651                                                         $mail->Password = SMTP_PASSWORD;
2652                                                 }
2653
2654                                                 $mail->IsHTML(true);
2655                                                 $mail->Subject = DIGEST_SUBJECT;
2656                                                 $mail->Body = $digest;
2657                                                 $mail->AltBody = $digest_text;
2658
2659                                                 $rc = $mail->Send();
2660
2661                                                 if (!$rc && $debug) print "ERROR: " . $mail->ErrorInfo;
2662
2663                                                 if ($debug) print "RC=$rc\n";
2664
2665                                                 if ($rc && $do_catchup) {
2666                                                         if ($debug) print "Marking affected articles as read...\n";
2667                                                         catchupArticlesById($link, $affected_ids, 0, $line["id"]);
2668                                                 }
2669                                         } else {
2670                                                 if ($debug) print "No headlines\n";
2671                                         }
2672
2673                                         db_query($link, "UPDATE ttrss_users SET last_digest_sent = NOW()
2674                                                 WHERE id = " . $line["id"]);
2675
2676                                 }
2677                         }
2678                 }
2679
2680                 if ($debug) _debug("All done.");
2681
2682         }
2683
2684         function prepare_headlines_digest($link, $user_id, $days = 1, $limit = 1000) {
2685
2686                 require_once "lib/MiniTemplator.class.php";
2687
2688                 $tpl = new MiniTemplator;
2689                 $tpl_t = new MiniTemplator;
2690
2691                 $tpl->readTemplateFromFile("templates/digest_template_html.txt");
2692                 $tpl_t->readTemplateFromFile("templates/digest_template.txt");
2693
2694                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $user_id);
2695                 $local_ts = convert_timestamp(time(), 'UTC', $user_tz_string);
2696
2697                 $tpl->setVariable('CUR_DATE', date('Y/m/d', $local_ts));
2698                 $tpl->setVariable('CUR_TIME', date('G:i', $local_ts));
2699
2700                 $tpl_t->setVariable('CUR_DATE', date('Y/m/d', $local_ts));
2701                 $tpl_t->setVariable('CUR_TIME', date('G:i', $local_ts));
2702
2703                 $affected_ids = array();
2704
2705                 if (DB_TYPE == "pgsql") {
2706                         $interval_query = "ttrss_entries.date_updated > NOW() - INTERVAL '$days days'";
2707                 } else if (DB_TYPE == "mysql") {
2708                         $interval_query = "ttrss_entries.date_updated > DATE_SUB(NOW(), INTERVAL $days DAY)";
2709                 }
2710
2711                 $result = db_query($link, "SELECT ttrss_entries.title,
2712                                 ttrss_feeds.title AS feed_title,
2713                                 COALESCE(ttrss_feed_categories.title, '".__('Uncategorized')."') AS cat_title,
2714                                 date_updated,
2715                                 ttrss_user_entries.ref_id,
2716                                 link,
2717                                 score,
2718                                 content,
2719                                 ".SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
2720                         FROM
2721                                 ttrss_user_entries,ttrss_entries,ttrss_feeds
2722                         LEFT JOIN
2723                                 ttrss_feed_categories ON (cat_id = ttrss_feed_categories.id)
2724                         WHERE
2725                                 ref_id = ttrss_entries.id AND feed_id = ttrss_feeds.id
2726                                 AND include_in_digest = true
2727                                 AND $interval_query
2728                                 AND ttrss_user_entries.owner_uid = $user_id
2729                                 AND unread = true
2730                                 AND score >= 0
2731                         ORDER BY ttrss_feed_categories.title, ttrss_feeds.title, score DESC, date_updated DESC
2732                         LIMIT $limit");
2733
2734                 $cur_feed_title = "";
2735
2736                 $headlines_count = db_num_rows($result);
2737
2738                 $headlines = array();
2739
2740                 while ($line = db_fetch_assoc($result)) {
2741                         array_push($headlines, $line);
2742                 }
2743
2744                 for ($i = 0; $i < sizeof($headlines); $i++) {
2745
2746                         $line = $headlines[$i];
2747
2748                         array_push($affected_ids, $line["ref_id"]);
2749
2750                         $updated = make_local_datetime($link, $line['last_updated'], false,
2751                                 $user_id);
2752
2753 /*                      if ($line["score"] != 0) {
2754                                 if ($line["score"] > 0) $line["score"] = '+' . $line["score"];
2755
2756                                 $line["title"] .= " (".$line['score'].")";
2757                         } */
2758
2759                         if (get_pref($link, 'ENABLE_FEED_CATS', $user_id)) {
2760                                 $line['feed_title'] = $line['cat_title'] . " / " . $line['feed_title'];
2761                         }
2762
2763                         $tpl->setVariable('FEED_TITLE', $line["feed_title"]);
2764                         $tpl->setVariable('ARTICLE_TITLE', $line["title"]);
2765                         $tpl->setVariable('ARTICLE_LINK', $line["link"]);
2766                         $tpl->setVariable('ARTICLE_UPDATED', $updated);
2767                         $tpl->setVariable('ARTICLE_EXCERPT',
2768                                 truncate_string(strip_tags($line["content"]), 300));
2769 //                      $tpl->setVariable('ARTICLE_CONTENT',
2770 //                              strip_tags($article_content));
2771
2772                         $tpl->addBlock('article');
2773
2774                         $tpl_t->setVariable('FEED_TITLE', $line["feed_title"]);
2775                         $tpl_t->setVariable('ARTICLE_TITLE', $line["title"]);
2776                         $tpl_t->setVariable('ARTICLE_LINK', $line["link"]);
2777                         $tpl_t->setVariable('ARTICLE_UPDATED', $updated);
2778 //                      $tpl_t->setVariable('ARTICLE_EXCERPT',
2779 //                              truncate_string(strip_tags($line["excerpt"]), 100));
2780
2781                         $tpl_t->addBlock('article');
2782
2783                         if ($headlines[$i]['feed_title'] != $headlines[$i+1]['feed_title']) {
2784                                 $tpl->addBlock('feed');
2785                                 $tpl_t->addBlock('feed');
2786                         }
2787
2788                 }
2789
2790                 $tpl->addBlock('digest');
2791                 $tpl->generateOutputToString($tmp);
2792
2793                 $tpl_t->addBlock('digest');
2794                 $tpl_t->generateOutputToString($tmp_t);
2795
2796                 return array($tmp, $headlines_count, $affected_ids, $tmp_t);
2797         }
2798
2799         function check_for_update($link) {
2800                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2801                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION;
2802
2803                         $version_data = @fetch_file_contents($version_url);
2804
2805                         if ($version_data) {
2806                                 $version_data = json_decode($version_data, true);
2807                                 if ($version_data && $version_data['version']) {
2808
2809                                         if (version_compare(VERSION, $version_data['version']) == -1) {
2810                                                 return $version_data;
2811                                         }
2812                                 }
2813                         }
2814                 }
2815                 return false;
2816         }
2817
2818         function markArticlesById($link, $ids, $cmode) {
2819
2820                 $tmp_ids = array();
2821
2822                 foreach ($ids as $id) {
2823                         array_push($tmp_ids, "ref_id = '$id'");
2824                 }
2825
2826                 $ids_qpart = join(" OR ", $tmp_ids);
2827
2828                 if ($cmode == 0) {
2829                         db_query($link, "UPDATE ttrss_user_entries SET
2830                         marked = false,last_read = NOW()
2831                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2832                 } else if ($cmode == 1) {
2833                         db_query($link, "UPDATE ttrss_user_entries SET
2834                         marked = true
2835                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2836                 } else {
2837                         db_query($link, "UPDATE ttrss_user_entries SET
2838                         marked = NOT marked,last_read = NOW()
2839                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2840                 }
2841         }
2842
2843         function publishArticlesById($link, $ids, $cmode) {
2844
2845                 $tmp_ids = array();
2846
2847                 foreach ($ids as $id) {
2848                         array_push($tmp_ids, "ref_id = '$id'");
2849                 }
2850
2851                 $ids_qpart = join(" OR ", $tmp_ids);
2852
2853                 if ($cmode == 0) {
2854                         db_query($link, "UPDATE ttrss_user_entries SET
2855                         published = false,last_read = NOW()
2856                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2857                 } else if ($cmode == 1) {
2858                         db_query($link, "UPDATE ttrss_user_entries SET
2859                         published = true,last_read = NOW()
2860                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2861                 } else {
2862                         db_query($link, "UPDATE ttrss_user_entries SET
2863                         published = NOT published,last_read = NOW()
2864                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2865                 }
2866
2867                 if (PUBSUBHUBBUB_HUB) {
2868                         $rss_link = get_self_url_prefix() .
2869                                 "/public.php?op=rss&id=-2&key=" .
2870                                 get_feed_access_key($link, -2, false);
2871
2872                         $p = new Publisher(PUBSUBHUBBUB_HUB);
2873
2874                         $pubsub_result = $p->publish_update($rss_link);
2875                 }
2876         }
2877
2878         function catchupArticlesById($link, $ids, $cmode, $owner_uid = false) {
2879
2880                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2881                 if (count($ids) == 0) return;
2882
2883                 $tmp_ids = array();
2884
2885                 foreach ($ids as $id) {
2886                         array_push($tmp_ids, "ref_id = '$id'");
2887                 }
2888
2889                 $ids_qpart = join(" OR ", $tmp_ids);
2890
2891                 if ($cmode == 0) {
2892                         db_query($link, "UPDATE ttrss_user_entries SET
2893                         unread = false,last_read = NOW()
2894                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2895                 } else if ($cmode == 1) {
2896                         db_query($link, "UPDATE ttrss_user_entries SET
2897                         unread = true
2898                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2899                 } else {
2900                         db_query($link, "UPDATE ttrss_user_entries SET
2901                         unread = NOT unread,last_read = NOW()
2902                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2903                 }
2904
2905                 /* update ccache */
2906
2907                 $result = db_query($link, "SELECT DISTINCT feed_id FROM ttrss_user_entries
2908                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2909
2910                 while ($line = db_fetch_assoc($result)) {
2911                         ccache_update($link, $line["feed_id"], $owner_uid);
2912                 }
2913         }
2914
2915         function catchupArticleById($link, $id, $cmode) {
2916
2917                 if ($cmode == 0) {
2918                         db_query($link, "UPDATE ttrss_user_entries SET
2919                         unread = false,last_read = NOW()
2920                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
2921                 } else if ($cmode == 1) {
2922                         db_query($link, "UPDATE ttrss_user_entries SET
2923                         unread = true
2924                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
2925                 } else {
2926                         db_query($link, "UPDATE ttrss_user_entries SET
2927                         unread = NOT unread,last_read = NOW()
2928                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
2929                 }
2930
2931                 $feed_id = getArticleFeed($link, $id);
2932                 ccache_update($link, $feed_id, $_SESSION["uid"]);
2933         }
2934
2935         function make_guid_from_title($title) {
2936                 return preg_replace("/[ \"\',.:;]/", "-",
2937                         mb_strtolower(strip_tags($title), 'utf-8'));
2938         }
2939
2940         function get_article_tags($link, $id, $owner_uid = 0, $tag_cache = false) {
2941
2942                 $a_id = db_escape_string($id);
2943
2944                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2945
2946                 $query = "SELECT DISTINCT tag_name,
2947                         owner_uid as owner FROM
2948                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
2949                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
2950
2951                 $obj_id = md5("TAGS:$owner_uid:$id");
2952                 $tags = array();
2953
2954                 /* check cache first */
2955
2956                 if ($tag_cache === false) {
2957                         $result = db_query($link, "SELECT tag_cache FROM ttrss_user_entries
2958                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2959
2960                         $tag_cache = db_fetch_result($result, 0, "tag_cache");
2961                 }
2962
2963                 if ($tag_cache) {
2964                         $tags = explode(",", $tag_cache);
2965                 } else {
2966
2967                         /* do it the hard way */
2968
2969                         $tmp_result = db_query($link, $query);
2970
2971                         while ($tmp_line = db_fetch_assoc($tmp_result)) {
2972                                 array_push($tags, $tmp_line["tag_name"]);
2973                         }
2974
2975                         /* update the cache */
2976
2977                         $tags_str = db_escape_string(join(",", $tags));
2978
2979                         db_query($link, "UPDATE ttrss_user_entries
2980                                 SET tag_cache = '$tags_str' WHERE ref_id = '$id'
2981                                 AND owner_uid = $owner_uid");
2982                 }
2983
2984                 return $tags;
2985         }
2986
2987         function trim_array($array) {
2988                 $tmp = $array;
2989                 array_walk($tmp, 'trim');
2990                 return $tmp;
2991         }
2992
2993         function tag_is_valid($tag) {
2994                 if ($tag == '') return false;
2995                 if (preg_match("/^[0-9]*$/", $tag)) return false;
2996                 if (mb_strlen($tag) > 250) return false;
2997
2998                 if (function_exists('iconv')) {
2999                         $tag = iconv("utf-8", "utf-8", $tag);
3000                 }
3001
3002                 if (!$tag) return false;
3003
3004                 return true;
3005         }
3006
3007         function render_login_form($link, $form_id = 0) {
3008                 switch ($form_id) {
3009                 case 0:
3010                         require_once "login_form.php";
3011                         break;
3012                 case 1:
3013                         require_once "mobile/login_form.php";
3014                         break;
3015                 }
3016                 exit;
3017         }
3018
3019         // from http://developer.apple.com/internet/safari/faq.html
3020         function no_cache_incantation() {
3021                 header("Expires: Mon, 22 Dec 1980 00:00:00 GMT"); // Happy birthday to me :)
3022                 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
3023                 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); // HTTP/1.1
3024                 header("Cache-Control: post-check=0, pre-check=0", false);
3025                 header("Pragma: no-cache"); // HTTP/1.0
3026         }
3027
3028         function format_warning($msg, $id = "") {
3029                 global $link;
3030                 return "<div class=\"warning\" id=\"$id\">
3031                         <img src=\"".theme_image($link, "images/sign_excl.png")."\">$msg</div>";
3032         }
3033
3034         function format_notice($msg, $id = "") {
3035                 global $link;
3036                 return "<div class=\"notice\" id=\"$id\">
3037                         <img src=\"".theme_image($link, "images/sign_info.png")."\">$msg</div>";
3038         }
3039
3040         function format_error($msg, $id = "") {
3041                 global $link;
3042                 return "<div class=\"error\" id=\"$id\">
3043                         <img src=\"".theme_image($link, "images/sign_excl.png")."\">$msg</div>";
3044         }
3045
3046         function print_notice($msg) {
3047                 return print format_notice($msg);
3048         }
3049
3050         function print_warning($msg) {
3051                 return print format_warning($msg);
3052         }
3053
3054         function print_error($msg) {
3055                 return print format_error($msg);
3056         }
3057
3058
3059         function T_sprintf() {
3060                 $args = func_get_args();
3061                 return vsprintf(__(array_shift($args)), $args);
3062         }
3063
3064         function format_inline_player($link, $url, $ctype) {
3065
3066                 $entry = "";
3067
3068                 if (strpos($ctype, "audio/") === 0) {
3069
3070                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
3071                                 strpos($_SERVER['HTTP_USER_AGENT'], "Chrome") !== false ||
3072                                 strpos($_SERVER['HTTP_USER_AGENT'], "Safari") !== false )) {
3073
3074                                 $id = 'AUDIO-' . uniqid();
3075
3076                                 $entry .= "<audio id=\"$id\"\">
3077                                         <source src=\"$url\"></source>
3078                                         </audio>";
3079
3080                                 $entry .= "<span onclick=\"player(this)\"
3081                                         title=\"".__("Click to play")."\" status=\"0\"
3082                                         class=\"player\" audio-id=\"$id\">".__("Play")."</span>";
3083
3084                         } else {
3085
3086                                 $entry .= "<object type=\"application/x-shockwave-flash\"
3087                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
3088                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
3089                                         <param name=\"movie\"
3090                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
3091                                         </object>";
3092                         }
3093                 }
3094
3095                 $filename = substr($url, strrpos($url, "/")+1);
3096
3097                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3098                         $filename . " (" . $ctype . ")" . "</a>";
3099
3100                 return $entry;
3101         }
3102
3103         function format_article($link, $id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
3104                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3105
3106                 $rv = array();
3107
3108                 $rv['id'] = $id;
3109
3110                 /* we can figure out feed_id from article id anyway, why do we
3111                  * pass feed_id here? let's ignore the argument :( */
3112
3113                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3114                         WHERE ref_id = '$id'");
3115
3116                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
3117
3118                 $rv['feed_id'] = $feed_id;
3119
3120                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
3121
3122                 $result = db_query($link, "SELECT rtl_content, always_display_enclosures, cache_content FROM ttrss_feeds
3123                         WHERE id = '$feed_id' AND owner_uid = $owner_uid");
3124
3125                 if (db_num_rows($result) == 1) {
3126                         $rtl_content = sql_bool_to_bool(db_fetch_result($result, 0, "rtl_content"));
3127                         $always_display_enclosures = sql_bool_to_bool(db_fetch_result($result, 0, "always_display_enclosures"));
3128                         $cache_content = sql_bool_to_bool(db_fetch_result($result, 0, "cache_content"));
3129                 } else {
3130                         $rtl_content = false;
3131                         $always_display_enclosures = false;
3132                         $cache_content = false;
3133                 }
3134
3135                 if ($rtl_content) {
3136                         $rtl_tag = "dir=\"RTL\"";
3137                         $rtl_class = "RTL";
3138                 } else {
3139                         $rtl_tag = "";
3140                         $rtl_class = "";
3141                 }
3142
3143                 if ($mark_as_read) {
3144                         $result = db_query($link, "UPDATE ttrss_user_entries
3145                                 SET unread = false,last_read = NOW()
3146                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
3147
3148                         ccache_update($link, $feed_id, $owner_uid);
3149                 }
3150
3151                 $result = db_query($link, "SELECT title,link,content,feed_id,comments,int_id,
3152                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
3153                         (SELECT icon_url FROM ttrss_feeds WHERE id = feed_id) as icon_url,
3154                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
3155                         num_comments,
3156                         tag_cache,
3157                         author,
3158                         orig_feed_id,
3159                         note,
3160                         cached_content
3161                         FROM ttrss_entries,ttrss_user_entries
3162                         WHERE   id = '$id' AND ref_id = id AND owner_uid = $owner_uid");
3163
3164                 if ($result) {
3165
3166                         $line = db_fetch_assoc($result);
3167
3168                         if ($line["icon_url"]) {
3169                                 $feed_icon = "<img src=\"" . $line["icon_url"] . "\">";
3170                         } else {
3171                                 $feed_icon = "&nbsp;";
3172                         }
3173
3174                         $feed_site_url = $line['site_url'];
3175
3176                         $num_comments = $line["num_comments"];
3177                         $entry_comments = "";
3178
3179                         if ($num_comments > 0) {
3180                                 if ($line["comments"]) {
3181                                         $comments_url = htmlspecialchars($line["comments"]);
3182                                 } else {
3183                                         $comments_url = htmlspecialchars($line["link"]);
3184                                 }
3185                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
3186                         } else {
3187                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
3188                                         $entry_comments = "<a target='_blank' href=\"".htmlspecialchars($line["comments"])."\">comments</a>";
3189                                 }
3190                         }
3191
3192                         if ($zoom_mode) {
3193                                 header("Content-Type: text/html");
3194                                 $rv['content'] .= "<html><head>
3195                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
3196                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
3197                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
3198                                         </head><body>";
3199                         }
3200
3201                         $title_escaped = htmlspecialchars($line['title']);
3202
3203                         $rv['content'] .= "<div id=\"PTITLE-$id\" style=\"display : none\">" .
3204                                 truncate_string(strip_tags($line['title']), 15) . "</div>";
3205
3206                         $rv['content'] .= "<div id=\"PTITLE-FULL-$id\" style=\"display : none\">" .
3207                                 strip_tags($line['title']) . "</div>";
3208
3209                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
3210
3211                         $rv['content'] .= "<div onclick=\"return postClicked(event, $id)\"
3212                                 class=\"postHeader\" id=\"POSTHDR-$id\">";
3213
3214                         $entry_author = $line["author"];
3215
3216                         if ($entry_author) {
3217                                 $entry_author = __(" - ") . $entry_author;
3218                         }
3219
3220                         $parsed_updated = make_local_datetime($link, $line["updated"], true,
3221                                 $owner_uid, true);
3222
3223                         $rv['content'] .= "<div class=\"postDate$rtl_class\">$parsed_updated</div>";
3224
3225                         if ($line["link"]) {
3226                                 $rv['content'] .= "<div class='postTitle'><a target='_blank'
3227                                         title=\"".htmlspecialchars($line['title'])."\"
3228                                         href=\"" .
3229                                         htmlspecialchars($line["link"]) . "\">" .
3230                                         $line["title"] .
3231                                         "<span class='author'>$entry_author</span></a></div>";
3232                         } else {
3233                                 $rv['content'] .= "<div class='postTitle'>" . $line["title"] . "$entry_author</div>";
3234                         }
3235
3236                         $tag_cache = $line["tag_cache"];
3237
3238                         if (!$tag_cache)
3239                                 $tags = get_article_tags($link, $id, $owner_uid);
3240                         else
3241                                 $tags = explode(",", $tag_cache);
3242
3243                         $tags_str = format_tags_string($tags, $id);
3244                         $tags_str_full = join(", ", $tags);
3245
3246                         if (!$tags_str_full) $tags_str_full = __("no tags");
3247
3248                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
3249
3250                         $rv['content'] .= "<div class='postTags' style='float : right'>
3251                                 <img src='".theme_image($link, 'images/tag.png')."'
3252                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
3253
3254                         if (!$zoom_mode) {
3255                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
3256                                         <a title=\"".__('Edit tags for this article')."\"
3257                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
3258
3259                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
3260                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
3261                                         position=\"below\">$tags_str_full</div>";
3262
3263                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/art-zoom.png')."\"
3264                                                 class='tagsPic' style=\"cursor : pointer\"
3265                                                 onclick=\"postOpenInNewTab(event, $id)\"
3266                                                 alt='Zoom' title='".__('Open article in new tab')."'>";
3267
3268                                 $button_plugins = explode(",", ARTICLE_BUTTON_PLUGINS);
3269
3270                                 foreach ($button_plugins as $p) {
3271                                         $pclass = "button_" . trim($p);
3272
3273                                         if (class_exists($pclass)) {
3274                                                 $plugin = new $pclass($link);
3275                                                 $rv['content'] .= $plugin->render($id, $line);
3276                                         }
3277                                 }
3278
3279                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/digest_checkbox.png')."\"
3280                                                 class='tagsPic' style=\"cursor : pointer\"
3281                                                 onclick=\"closeArticlePanel($id)\"
3282                                                 title='".__('Close article')."'>";
3283
3284                         } else {
3285                                 $tags_str = strip_tags($tags_str);
3286                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
3287                         }
3288                         $rv['content'] .= "</div>";
3289                         $rv['content'] .= "<div clear='both'>$entry_comments</div>";
3290
3291                         if ($line["orig_feed_id"]) {
3292
3293                                 $tmp_result = db_query($link, "SELECT * FROM ttrss_archived_feeds
3294                                         WHERE id = ".$line["orig_feed_id"]);
3295
3296                                 if (db_num_rows($tmp_result) != 0) {
3297
3298                                         $rv['content'] .= "<div clear='both'>";
3299                                         $rv['content'] .= __("Originally from:");
3300
3301                                         $rv['content'] .= "&nbsp;";
3302
3303                                         $tmp_line = db_fetch_assoc($tmp_result);
3304
3305                                         $rv['content'] .= "<a target='_blank'
3306                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
3307                                                 $tmp_line['title'] . "</a>";
3308
3309                                         $rv['content'] .= "&nbsp;";
3310
3311                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3312                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.png'></a>";
3313
3314                                         $rv['content'] .= "</div>";
3315                                 }
3316                         }
3317
3318                         $rv['content'] .= "</div>";
3319
3320                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3321                                 if ($line['note']) {
3322                                         $rv['content'] .= format_article_note($id, $line['note']);
3323                                 }
3324                         $rv['content'] .= "</div>";
3325
3326                         $rv['content'] .= "<div class=\"postIcon\">" .
3327                                 "<a target=\"_blank\" title=\"".__("Visit the website")."\"$
3328                                 href=\"".htmlspecialchars($feed_site_url)."\">".
3329                                 $feed_icon . "</a></div>";
3330
3331                         $rv['content'] .= "<div class=\"postContent\">";
3332
3333                         // N-grams
3334
3335                         if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_RELATED_THRESHOLD')) {
3336
3337                                 $ngram_result = db_query($link, "SELECT id,title FROM
3338                                                 ttrss_entries,ttrss_user_entries
3339                                         WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
3340                                                 AND similarity(title, '$title_escaped') >= "._NGRAM_TITLE_RELATED_THRESHOLD."
3341                                                 AND title != '$title_escaped'
3342                                                 AND owner_uid = $owner_uid");
3343
3344                                 if (db_num_rows($ngram_result) > 0) {
3345                                         $rv['content'] .= "<div dojoType=\"dijit.form.DropDownButton\">".
3346                                                 "<span>" . __('Related')."</span>";
3347                                         $rv['content'] .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3348
3349                                         while ($nline = db_fetch_assoc($ngram_result)) {
3350                                                 $rv['content'] .= "<div onclick=\"hlOpenInNewTab(null,".$nline['id'].")\"
3351                                                         dojoType=\"dijit.MenuItem\">".$nline['title']."</div>";
3352
3353                                         }
3354                                         $rv['content'] .= "</div></div><br/";
3355                                 }
3356                         }
3357
3358                         if ($cache_content && $line["cached_content"] != "") {
3359                                 $line["content"] =& $line["cached_content"];
3360                         }
3361
3362                         $article_content = sanitize($link, $line["content"], false, $owner_uid,
3363                                 $feed_site_url);
3364
3365                         $rv['content'] .= $article_content;
3366
3367                         $rv['content'] .= format_article_enclosures($link, $id,
3368                                 $always_display_enclosures, $article_content);
3369
3370                         $rv['content'] .= "</div>";
3371
3372                         $rv['content'] .= "</div>";
3373
3374                 }
3375
3376                 if ($zoom_mode) {
3377                         $rv['content'] .= "
3378                                 <div style=\"text-align : center\">
3379                                 <button onclick=\"return window.close()\">".
3380                                         __("Close this window")."</button></div>";
3381                         $rv['content'] .= "</body></html>";
3382                 }
3383
3384                 return $rv;
3385
3386         }
3387
3388         function print_checkpoint($n, $s) {
3389                 $ts = getmicrotime();
3390                 echo sprintf("<!-- CP[$n] %.4f seconds -->", $ts - $s);
3391                 return $ts;
3392         }
3393
3394         function sanitize_tag($tag) {
3395                 $tag = trim($tag);
3396
3397                 $tag = mb_strtolower($tag, 'utf-8');
3398
3399                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3400
3401 //              $tag = str_replace('"', "", $tag);
3402 //              $tag = str_replace("+", " ", $tag);
3403                 $tag = str_replace("technorati tag: ", "", $tag);
3404
3405                 return $tag;
3406         }
3407
3408         function get_self_url_prefix() {
3409                 if (strrpos(SELF_URL_PATH, "/") === strlen(SELF_URL_PATH)-1) {
3410                         return substr(SELF_URL_PATH, 0, strlen(SELF_URL_PATH)-1);
3411                 } else {
3412                         return SELF_URL_PATH;
3413                 }
3414         }
3415
3416         function opml_publish_url($link){
3417
3418                 $url_path = get_self_url_prefix();
3419                 $url_path .= "/opml.php?op=publish&key=" .
3420                         get_feed_access_key($link, 'OPML:Publish', false, $_SESSION["uid"]);
3421
3422                 return $url_path;
3423         }
3424
3425         /**
3426          * Purge a feed contents, marked articles excepted.
3427          *
3428          * @param mixed $link The database connection.
3429          * @param integer $id The id of the feed to purge.
3430          * @return void
3431          */
3432         function clear_feed_articles($link, $id) {
3433
3434                 if ($id != 0) {
3435                         $result = db_query($link, "DELETE FROM ttrss_user_entries
3436                         WHERE feed_id = '$id' AND marked = false AND owner_uid = " . $_SESSION["uid"]);
3437                 } else {
3438                         $result = db_query($link, "DELETE FROM ttrss_user_entries
3439                         WHERE feed_id IS NULL AND marked = false AND owner_uid = " . $_SESSION["uid"]);
3440                 }
3441
3442                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
3443                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
3444
3445                 ccache_update($link, $id, $_SESSION['uid']);
3446         } // function clear_feed_articles
3447
3448         /**
3449          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3450          *
3451          * @return string The Mozilla Firefox feed adding URL.
3452          */
3453         function add_feed_url() {
3454                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3455
3456                 $url_path = get_self_url_prefix() .
3457                         "/public.php?op=subscribe&feed_url=%s";
3458                 return $url_path;
3459         } // function add_feed_url
3460
3461         function encrypt_password($pass, $salt = '', $mode2 = false) {
3462                 if ($salt && $mode2) {
3463                         return "MODE2:" . hash('sha256', $salt . $pass);
3464                 } else if ($salt) {
3465                         return "SHA1X:" . sha1("$salt:$pass");
3466                 } else {
3467                         return "SHA1:" . sha1($pass);
3468                 }
3469         } // function encrypt_password
3470
3471         function load_filters($link, $feed_id, $owner_uid, $action_id = false) {
3472                 $filters = array();
3473
3474                 $cat_id = (int)getFeedCategory($link, $feed_id);
3475
3476                 $result = db_query($link, "SELECT * FROM ttrss_filters2 WHERE
3477                         owner_uid = $owner_uid AND enabled = true");
3478
3479                 $check_cats = join(",", array_merge(
3480                         getParentCategories($link, $cat_id, $owner_uid),
3481                         array($cat_id)));
3482
3483                 while ($line = db_fetch_assoc($result)) {
3484                         $filter_id = $line["id"];
3485
3486                         $result2 = db_query($link, "SELECT
3487                                 r.reg_exp, r.feed_id, r.cat_id, r.cat_filter, t.name AS type_name
3488                                 FROM ttrss_filters2_rules AS r,
3489                                 ttrss_filter_types AS t
3490                                 WHERE
3491                                         (cat_id IS NULL OR cat_id IN ($check_cats)) AND
3492                                         (feed_id IS NULL OR feed_id = '$feed_id') AND
3493                                         filter_type = t.id AND filter_id = '$filter_id'");
3494
3495                         $rules = array();
3496                         $actions = array();
3497
3498                         while ($rule_line = db_fetch_assoc($result2)) {
3499 #                               print_r($rule_line);
3500
3501                                 $rule = array();
3502                                 $rule["reg_exp"] = $rule_line["reg_exp"];
3503                                 $rule["type"] = $rule_line["type_name"];
3504
3505                                 array_push($rules, $rule);
3506                         }
3507
3508                         $result2 = db_query($link, "SELECT a.action_param,t.name AS type_name
3509                                 FROM ttrss_filters2_actions AS a,
3510                                 ttrss_filter_actions AS t
3511                                 WHERE
3512                                         action_id = t.id AND filter_id = '$filter_id'");
3513
3514                         while ($action_line = db_fetch_assoc($result2)) {
3515 #                               print_r($action_line);
3516
3517                                 $action = array();
3518                                 $action["type"] = $action_line["type_name"];
3519                                 $action["param"] = $action_line["action_param"];
3520
3521                                 array_push($actions, $action);
3522                         }
3523
3524
3525                         $filter = array();
3526                         $filter["match_any_rule"] = sql_bool_to_bool($line["match_any_rule"]);
3527                         $filter["rules"] = $rules;
3528                         $filter["actions"] = $actions;
3529
3530                         if (count($rules) > 0 && count($actions) > 0) {
3531                                 array_push($filters, $filter);
3532                         }
3533                 }
3534
3535                 return $filters;
3536         }
3537
3538         function get_score_pic($score) {
3539                 if ($score > 100) {
3540                         return "score_high.png";
3541                 } else if ($score > 0) {
3542                         return "score_half_high.png";
3543                 } else if ($score < -100) {
3544                         return "score_low.png";
3545                 } else if ($score < 0) {
3546                         return "score_half_low.png";
3547                 } else {
3548                         return "score_neutral.png";
3549                 }
3550         }
3551
3552         function feed_has_icon($id) {
3553                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3554         }
3555
3556         function init_connection($link) {
3557                 if ($link) {
3558
3559                         if (DB_TYPE == "pgsql") {
3560                                 pg_query($link, "set client_encoding = 'UTF-8'");
3561                                 pg_set_client_encoding("UNICODE");
3562                                 pg_query($link, "set datestyle = 'ISO, european'");
3563                                 pg_query($link, "set TIME ZONE 0");
3564                         } else {
3565                                 db_query($link, "SET time_zone = '+0:0'");
3566
3567                                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
3568                                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
3569                                 }
3570                         }
3571                         return true;
3572                 } else {
3573                         print "Unable to connect to database:" . db_last_error();
3574                         return false;
3575                 }
3576         }
3577
3578         /* function ccache_zero($link, $feed_id, $owner_uid) {
3579                 db_query($link, "UPDATE ttrss_counters_cache SET
3580                         value = 0, updated = NOW() WHERE
3581                         feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3582         } */
3583
3584         function ccache_zero_all($link, $owner_uid) {
3585                 db_query($link, "UPDATE ttrss_counters_cache SET
3586                         value = 0 WHERE owner_uid = '$owner_uid'");
3587
3588                 db_query($link, "UPDATE ttrss_cat_counters_cache SET
3589                         value = 0 WHERE owner_uid = '$owner_uid'");
3590         }
3591
3592         function ccache_remove($link, $feed_id, $owner_uid, $is_cat = false) {
3593
3594                 if (!$is_cat) {
3595                         $table = "ttrss_counters_cache";
3596                 } else {
3597                         $table = "ttrss_cat_counters_cache";
3598                 }
3599
3600                 db_query($link, "DELETE FROM $table WHERE
3601                         feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3602
3603         }
3604
3605         function ccache_update_all($link, $owner_uid) {
3606
3607                 if (get_pref($link, 'ENABLE_FEED_CATS', $owner_uid)) {
3608
3609                         $result = db_query($link, "SELECT feed_id FROM ttrss_cat_counters_cache
3610                                 WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
3611
3612                         while ($line = db_fetch_assoc($result)) {
3613                                 ccache_update($link, $line["feed_id"], $owner_uid, true);
3614                         }
3615
3616                         /* We have to manually include category 0 */
3617
3618                         ccache_update($link, 0, $owner_uid, true);
3619
3620                 } else {
3621                         $result = db_query($link, "SELECT feed_id FROM ttrss_counters_cache
3622                                 WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
3623
3624                         while ($line = db_fetch_assoc($result)) {
3625                                 print ccache_update($link, $line["feed_id"], $owner_uid);
3626
3627                         }
3628
3629                 }
3630         }
3631
3632         function ccache_find($link, $feed_id, $owner_uid, $is_cat = false,
3633                 $no_update = false) {
3634
3635                 if (!is_numeric($feed_id)) return;
3636
3637                 if (!$is_cat) {
3638                         $table = "ttrss_counters_cache";
3639                         if ($feed_id > 0) {
3640                                 $tmp_result = db_query($link, "SELECT owner_uid FROM ttrss_feeds
3641                                         WHERE id = '$feed_id'");
3642                                 $owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
3643                         }
3644                 } else {
3645                         $table = "ttrss_cat_counters_cache";
3646                 }
3647
3648                 if (DB_TYPE == "pgsql") {
3649                         $date_qpart = "updated > NOW() - INTERVAL '15 minutes'";
3650                 } else if (DB_TYPE == "mysql") {
3651                         $date_qpart = "updated > DATE_SUB(NOW(), INTERVAL 15 MINUTE)";
3652                 }
3653
3654                 $result = db_query($link, "SELECT value FROM $table
3655                         WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id'
3656                         LIMIT 1");
3657
3658                 if (db_num_rows($result) == 1) {
3659                         return db_fetch_result($result, 0, "value");
3660                 } else {
3661                         if ($no_update) {
3662                                 return -1;
3663                         } else {
3664                                 return ccache_update($link, $feed_id, $owner_uid, $is_cat);
3665                         }
3666                 }
3667
3668         }
3669
3670         function ccache_update($link, $feed_id, $owner_uid, $is_cat = false,
3671                 $update_pcat = true) {
3672
3673                 if (!is_numeric($feed_id)) return;
3674
3675                 if (!$is_cat && $feed_id > 0) {
3676                         $tmp_result = db_query($link, "SELECT owner_uid FROM ttrss_feeds
3677                                 WHERE id = '$feed_id'");
3678                         $owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
3679                 }
3680
3681                 $prev_unread = ccache_find($link, $feed_id, $owner_uid, $is_cat, true);
3682
3683                 /* When updating a label, all we need to do is recalculate feed counters
3684                  * because labels are not cached */
3685
3686                 if ($feed_id < 0) {
3687                         ccache_update_all($link, $owner_uid);
3688                         return;
3689                 }
3690
3691                 if (!$is_cat) {
3692                         $table = "ttrss_counters_cache";
3693                 } else {
3694                         $table = "ttrss_cat_counters_cache";
3695                 }
3696
3697                 if ($is_cat && $feed_id >= 0) {
3698                         if ($feed_id != 0) {
3699                                 $cat_qpart = "cat_id = '$feed_id'";
3700                         } else {
3701                                 $cat_qpart = "cat_id IS NULL";
3702                         }
3703
3704                         /* Recalculate counters for child feeds */
3705
3706                         $result = db_query($link, "SELECT id FROM ttrss_feeds
3707                                                 WHERE owner_uid = '$owner_uid' AND $cat_qpart");
3708
3709                         while ($line = db_fetch_assoc($result)) {
3710                                 ccache_update($link, $line["id"], $owner_uid, false, false);
3711                         }
3712
3713                         $result = db_query($link, "SELECT SUM(value) AS sv
3714                                 FROM ttrss_counters_cache, ttrss_feeds
3715                                 WHERE id = feed_id AND $cat_qpart AND
3716                                 ttrss_feeds.owner_uid = '$owner_uid'");
3717
3718                         $unread = (int) db_fetch_result($result, 0, "sv");
3719
3720                 } else {
3721                         $unread = (int) getFeedArticles($link, $feed_id, $is_cat, true, $owner_uid);
3722                 }
3723
3724                 db_query($link, "BEGIN");
3725
3726                 $result = db_query($link, "SELECT feed_id FROM $table
3727                         WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id' LIMIT 1");
3728
3729                 if (db_num_rows($result) == 1) {
3730                         db_query($link, "UPDATE $table SET
3731                                 value = '$unread', updated = NOW() WHERE
3732                                 feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3733
3734                 } else {
3735                         db_query($link, "INSERT INTO $table
3736                                 (feed_id, value, owner_uid, updated)
3737                                 VALUES
3738                                 ($feed_id, $unread, $owner_uid, NOW())");
3739                 }
3740
3741                 db_query($link, "COMMIT");
3742
3743                 if ($feed_id > 0 && $prev_unread != $unread) {
3744
3745                         if (!$is_cat) {
3746
3747                                 /* Update parent category */
3748
3749                                 if ($update_pcat) {
3750
3751                                         $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
3752                                                 WHERE owner_uid = '$owner_uid' AND id = '$feed_id'");
3753
3754                                         $cat_id = (int) db_fetch_result($result, 0, "cat_id");
3755
3756                                         ccache_update($link, $cat_id, $owner_uid, true);
3757
3758                                 }
3759                         }
3760                 } else if ($feed_id < 0) {
3761                         ccache_update_all($link, $owner_uid);
3762                 }
3763
3764                 return $unread;
3765         }
3766
3767         /* function ccache_cleanup($link, $owner_uid) {
3768
3769                 if (DB_TYPE == "pgsql") {
3770                         db_query($link, "DELETE FROM ttrss_counters_cache AS c1 WHERE
3771                                 (SELECT count(*) FROM ttrss_counters_cache AS c2
3772                                         WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
3773                                         AND owner_uid = '$owner_uid'");
3774
3775                         db_query($link, "DELETE FROM ttrss_cat_counters_cache AS c1 WHERE
3776                                 (SELECT count(*) FROM ttrss_cat_counters_cache AS c2
3777                                         WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
3778                                         AND owner_uid = '$owner_uid'");
3779                 } else {
3780                         db_query($link, "DELETE c1 FROM
3781                                         ttrss_counters_cache AS c1,
3782                                         ttrss_counters_cache AS c2
3783                                 WHERE
3784                                         c1.owner_uid = '$owner_uid' AND
3785                                         c1.owner_uid = c2.owner_uid AND
3786                                         c1.feed_id = c2.feed_id");
3787
3788                         db_query($link, "DELETE c1 FROM
3789                                         ttrss_cat_counters_cache AS c1,
3790                                         ttrss_cat_counters_cache AS c2
3791                                 WHERE
3792                                         c1.owner_uid = '$owner_uid' AND
3793                                         c1.owner_uid = c2.owner_uid AND
3794                                         c1.feed_id = c2.feed_id");
3795
3796                 }
3797         } */
3798
3799         function label_find_id($link, $label, $owner_uid) {
3800                 $result = db_query($link,
3801                         "SELECT id FROM ttrss_labels2 WHERE caption = '$label'
3802                                 AND owner_uid = '$owner_uid' LIMIT 1");
3803
3804                 if (db_num_rows($result) == 1) {
3805                         return db_fetch_result($result, 0, "id");
3806                 } else {
3807                         return 0;
3808                 }
3809         }
3810
3811         function get_article_labels($link, $id, $owner_uid = false) {
3812                 $rv = array();
3813
3814                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3815
3816                 $result = db_query($link, "SELECT label_cache FROM
3817                         ttrss_user_entries WHERE ref_id = '$id' AND owner_uid = " .
3818                         $owner_uid);
3819
3820                 if (db_num_rows($result) > 0) {
3821                         $label_cache = db_fetch_result($result, 0, "label_cache");
3822
3823                         if ($label_cache) {
3824                                 $label_cache = json_decode($label_cache, true);
3825
3826                                 if ($label_cache["no-labels"] == 1)
3827                                         return $rv;
3828                                 else
3829                                         return $label_cache;
3830                         }
3831                 }
3832
3833                 $result = db_query($link,
3834                         "SELECT DISTINCT label_id,caption,fg_color,bg_color
3835                                 FROM ttrss_labels2, ttrss_user_labels2
3836                         WHERE id = label_id
3837                                 AND article_id = '$id'
3838                                 AND owner_uid = ". $owner_uid . "
3839                         ORDER BY caption");
3840
3841                 while ($line = db_fetch_assoc($result)) {
3842                         $rk = array($line["label_id"], $line["caption"], $line["fg_color"],
3843                                 $line["bg_color"]);
3844                         array_push($rv, $rk);
3845                 }
3846
3847                 if (count($rv) > 0)
3848                         label_update_cache($link, $owner_uid, $id, $rv);
3849                 else
3850                         label_update_cache($link, $owner_uid, $id, array("no-labels" => 1));
3851
3852                 return $rv;
3853         }
3854
3855
3856         function label_find_caption($link, $label, $owner_uid) {
3857                 $result = db_query($link,
3858                         "SELECT caption FROM ttrss_labels2 WHERE id = '$label'
3859                                 AND owner_uid = '$owner_uid' LIMIT 1");
3860
3861                 if (db_num_rows($result) == 1) {
3862                         return db_fetch_result($result, 0, "caption");
3863                 } else {
3864                         return "";
3865                 }
3866         }
3867
3868         function get_all_labels($link, $owner_uid) {
3869                 $rv = array();
3870
3871                 $result = db_query($link, "SELECT fg_color, bg_color, caption FROM ttrss_labels2 WHERE owner_uid = " . $owner_uid);
3872
3873                 while ($line = db_fetch_assoc($result)) {
3874                         array_push($rv, $line);
3875                 }
3876
3877                 return $rv;
3878         }
3879
3880         function label_update_cache($link, $owner_uid, $id, $labels = false, $force = false) {
3881
3882                 if ($force)
3883                         label_clear_cache($link, $id);
3884
3885                 if (!$labels)
3886                         $labels = get_article_labels($link, $id);
3887
3888                 $labels = db_escape_string(json_encode($labels));
3889
3890                 db_query($link, "UPDATE ttrss_user_entries SET
3891                         label_cache = '$labels' WHERE ref_id = '$id' AND  owner_uid = '$owner_uid'");
3892
3893         }
3894
3895         function label_clear_cache($link, $id) {
3896
3897                 db_query($link, "UPDATE ttrss_user_entries SET
3898                         label_cache = '' WHERE ref_id = '$id'");
3899
3900         }
3901
3902         function label_remove_article($link, $id, $label, $owner_uid) {
3903
3904                 $label_id = label_find_id($link, $label, $owner_uid);
3905
3906                 if (!$label_id) return;
3907
3908                 $result = db_query($link,
3909                         "DELETE FROM ttrss_user_labels2
3910                         WHERE
3911                                 label_id = '$label_id' AND
3912                                 article_id = '$id'");
3913
3914                 label_clear_cache($link, $id);
3915         }
3916
3917         function label_add_article($link, $id, $label, $owner_uid) {
3918
3919                 $label_id = label_find_id($link, $label, $owner_uid);
3920
3921                 if (!$label_id) return;
3922
3923                 $result = db_query($link,
3924                         "SELECT
3925                                 article_id FROM ttrss_labels2, ttrss_user_labels2
3926                         WHERE
3927                                 label_id = id AND
3928                                 label_id = '$label_id' AND
3929                                 article_id = '$id' AND owner_uid = '$owner_uid'
3930                         LIMIT 1");
3931
3932                 if (db_num_rows($result) == 0) {
3933                         db_query($link, "INSERT INTO ttrss_user_labels2
3934                                 (label_id, article_id) VALUES ('$label_id', '$id')");
3935                 }
3936
3937                 label_clear_cache($link, $id);
3938
3939         }
3940
3941         function label_remove($link, $id, $owner_uid) {
3942                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3943
3944                 db_query($link, "BEGIN");
3945
3946                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
3947                         WHERE id = '$id'");
3948
3949                 $caption = db_fetch_result($result, 0, "caption");
3950
3951                 $result = db_query($link, "DELETE FROM ttrss_labels2 WHERE id = '$id'
3952                         AND owner_uid = " . $owner_uid);
3953
3954                 if (db_affected_rows($link, $result) != 0 && $caption) {
3955
3956                         /* Remove access key for the label */
3957
3958                         $ext_id = -11 - $id;
3959
3960                         db_query($link, "DELETE FROM ttrss_access_keys WHERE
3961                                 feed_id = '$ext_id' AND owner_uid = $owner_uid");
3962
3963                         /* Disable filters that reference label being removed */
3964
3965                         db_query($link, "UPDATE ttrss_filters SET
3966                                 enabled = false WHERE action_param = '$caption'
3967                                         AND action_id = 7
3968                                         AND owner_uid = " . $owner_uid);
3969
3970                         /* Remove cached data */
3971
3972                         db_query($link, "UPDATE ttrss_user_entries SET label_cache = ''
3973                                 WHERE label_cache LIKE '%$caption%' AND owner_uid = " . $owner_uid);
3974
3975                 }
3976
3977                 db_query($link, "COMMIT");
3978         }
3979
3980         function label_create($link, $caption, $fg_color = '', $bg_color = '', $owner_uid) {
3981
3982                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
3983
3984                 db_query($link, "BEGIN");
3985
3986                 $result = false;
3987
3988                 $result = db_query($link, "SELECT id FROM ttrss_labels2
3989                         WHERE caption = '$caption' AND owner_uid = $owner_uid");
3990
3991                 if (db_num_rows($result) == 0) {
3992                         $result = db_query($link,
3993                                 "INSERT INTO ttrss_labels2 (caption,owner_uid,fg_color,bg_color)
3994                                         VALUES ('$caption', '$owner_uid', '$fg_color', '$bg_color')");
3995
3996                         $result = db_affected_rows($link, $result) != 0;
3997                 }
3998
3999                 db_query($link, "COMMIT");
4000
4001                 return $result;
4002         }
4003
4004         function format_tags_string($tags, $id) {
4005
4006                 $tags_str = "";
4007                 $tags_nolinks_str = "";
4008
4009                 $num_tags = 0;
4010
4011                 $tag_limit = 6;
4012
4013                 $formatted_tags = array();
4014
4015                 foreach ($tags as $tag) {
4016                         $num_tags++;
4017                         $tag_escaped = str_replace("'", "\\'", $tag);
4018
4019                         if (mb_strlen($tag) > 30) {
4020                                 $tag = truncate_string($tag, 30);
4021                         }
4022
4023                         $tag_str = "<a href=\"javascript:viewfeed('$tag_escaped')\">$tag</a>";
4024
4025                         array_push($formatted_tags, $tag_str);
4026
4027                         $tmp_tags_str = implode(", ", $formatted_tags);
4028
4029                         if ($num_tags == $tag_limit || mb_strlen($tmp_tags_str) > 150) {
4030                                 break;
4031                         }
4032                 }
4033
4034                 $tags_str = implode(", ", $formatted_tags);
4035
4036                 if ($num_tags < count($tags)) {
4037                         $tags_str .= ", &hellip;";
4038                 }
4039
4040                 if ($num_tags == 0) {
4041                         $tags_str = __("no tags");
4042                 }
4043
4044                 return $tags_str;
4045
4046         }
4047
4048         function format_article_labels($labels, $id) {
4049
4050                 $labels_str = "";
4051
4052                 foreach ($labels as $l) {
4053                         $labels_str .= sprintf("<span class='hlLabelRef'
4054                                 style='color : %s; background-color : %s'>%s</span>",
4055                                         $l[2], $l[3], $l[1]);
4056                         }
4057
4058                 return $labels_str;
4059
4060         }
4061
4062         function format_article_note($id, $note) {
4063
4064                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
4065                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
4066                         __('(edit note)')."</div>$note</div>";
4067
4068                 return $str;
4069         }
4070
4071         function toggle_collapse_cat($link, $cat_id, $mode) {
4072                 if ($cat_id > 0) {
4073                         $mode = bool_to_sql_bool($mode);
4074
4075                         db_query($link, "UPDATE ttrss_feed_categories SET
4076                                 collapsed = $mode WHERE id = '$cat_id' AND owner_uid = " .
4077                                 $_SESSION["uid"]);
4078                 } else {
4079                         $pref_name = '';
4080
4081                         switch ($cat_id) {
4082                         case -1:
4083                                 $pref_name = '_COLLAPSED_SPECIAL';
4084                                 break;
4085                         case -2:
4086                                 $pref_name = '_COLLAPSED_LABELS';
4087                                 break;
4088                         case 0:
4089                                 $pref_name = '_COLLAPSED_UNCAT';
4090                                 break;
4091                         }
4092
4093                         if ($pref_name) {
4094                                 if ($mode) {
4095                                         set_pref($link, $pref_name, 'true');
4096                                 } else {
4097                                         set_pref($link, $pref_name, 'false');
4098                                 }
4099                         }
4100                 }
4101         }
4102
4103         function remove_feed($link, $id, $owner_uid) {
4104
4105                 if ($id > 0) {
4106
4107                         /* save starred articles in Archived feed */
4108
4109                         db_query($link, "BEGIN");
4110
4111                         /* prepare feed if necessary */
4112
4113                         $result = db_query($link, "SELECT id FROM ttrss_archived_feeds
4114                                 WHERE id = '$id'");
4115
4116                         if (db_num_rows($result) == 0) {
4117                                 db_query($link, "INSERT INTO ttrss_archived_feeds
4118                                         (id, owner_uid, title, feed_url, site_url)
4119                                 SELECT id, owner_uid, title, feed_url, site_url from ttrss_feeds
4120                                 WHERE id = '$id'");
4121                         }
4122
4123                         db_query($link, "UPDATE ttrss_user_entries SET feed_id = NULL,
4124                                 orig_feed_id = '$id' WHERE feed_id = '$id' AND
4125                                         marked = true AND owner_uid = $owner_uid");
4126
4127                         /* Remove access key for the feed */
4128
4129                         db_query($link, "DELETE FROM ttrss_access_keys WHERE
4130                                 feed_id = '$id' AND owner_uid = $owner_uid");
4131
4132                         /* remove the feed */
4133
4134                         db_query($link, "DELETE FROM ttrss_feeds
4135                                         WHERE id = '$id' AND owner_uid = $owner_uid");
4136
4137                         db_query($link, "COMMIT");
4138
4139                         if (file_exists(ICONS_DIR . "/$id.ico")) {
4140                                 unlink(ICONS_DIR . "/$id.ico");
4141                         }
4142
4143                         ccache_remove($link, $id, $owner_uid);
4144
4145                 } else {
4146                         label_remove($link, -11-$id, $owner_uid);
4147                         ccache_remove($link, -11-$id, $owner_uid);
4148                 }
4149         }
4150
4151         function get_feed_category($link, $feed_cat, $parent_cat_id = false) {
4152                 if ($parent_cat_id) {
4153                         $parent_qpart = "parent_cat = '$parent_cat_id'";
4154                         $parent_insert = "'$parent_cat_id'";
4155                 } else {
4156                         $parent_qpart = "parent_cat IS NULL";
4157                         $parent_insert = "NULL";
4158                 }
4159
4160                 $result = db_query($link,
4161                         "SELECT id FROM ttrss_feed_categories
4162                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
4163
4164                 if (db_num_rows($result) == 0) {
4165                         return false;
4166                 } else {
4167                         return db_fetch_result($result, 0, "id");
4168                 }
4169         }
4170
4171         function add_feed_category($link, $feed_cat, $parent_cat_id = false) {
4172
4173                 if (!$feed_cat) return false;
4174
4175                 db_query($link, "BEGIN");
4176
4177                 if ($parent_cat_id) {
4178                         $parent_qpart = "parent_cat = '$parent_cat_id'";
4179                         $parent_insert = "'$parent_cat_id'";
4180                 } else {
4181                         $parent_qpart = "parent_cat IS NULL";
4182                         $parent_insert = "NULL";
4183                 }
4184
4185                 $result = db_query($link,
4186                         "SELECT id FROM ttrss_feed_categories
4187                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
4188
4189                 if (db_num_rows($result) == 0) {
4190
4191                         $result = db_query($link,
4192                                 "INSERT INTO ttrss_feed_categories (owner_uid,title,parent_cat)
4193                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat', $parent_insert)");
4194
4195                         db_query($link, "COMMIT");
4196
4197                         return true;
4198                 }
4199
4200                 return false;
4201         }
4202
4203         function remove_feed_category($link, $id, $owner_uid) {
4204
4205                 db_query($link, "DELETE FROM ttrss_feed_categories
4206                         WHERE id = '$id' AND owner_uid = $owner_uid");
4207
4208                 ccache_remove($link, $id, $owner_uid, true);
4209         }
4210
4211         function archive_article($link, $id, $owner_uid) {
4212                 db_query($link, "BEGIN");
4213
4214                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
4215                         WHERE ref_id = '$id' AND owner_uid = $owner_uid");
4216
4217                 if (db_num_rows($result) != 0) {
4218
4219                         /* prepare the archived table */
4220
4221                         $feed_id = (int) db_fetch_result($result, 0, "feed_id");
4222
4223                         if ($feed_id) {
4224                                 $result = db_query($link, "SELECT id FROM ttrss_archived_feeds
4225                                         WHERE id = '$feed_id'");
4226
4227                                 if (db_num_rows($result) == 0) {
4228                                         db_query($link, "INSERT INTO ttrss_archived_feeds
4229                                                 (id, owner_uid, title, feed_url, site_url)
4230                                         SELECT id, owner_uid, title, feed_url, site_url from ttrss_feeds
4231                                         WHERE id = '$feed_id'");
4232                                 }
4233
4234                                 db_query($link, "UPDATE ttrss_user_entries
4235                                         SET orig_feed_id = feed_id, feed_id = NULL
4236                                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
4237                         }
4238                 }
4239
4240                 db_query($link, "COMMIT");
4241         }
4242
4243         function getArticleFeed($link, $id) {
4244                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
4245                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
4246
4247                 if (db_num_rows($result) != 0) {
4248                         return db_fetch_result($result, 0, "feed_id");
4249                 } else {
4250                         return 0;
4251                 }
4252         }
4253
4254         /**
4255          * Fixes incomplete URLs by prepending "http://".
4256          * Also replaces feed:// with http://, and
4257          * prepends a trailing slash if the url is a domain name only.
4258          *
4259          * @param string $url Possibly incomplete URL
4260          *
4261          * @return string Fixed URL.
4262          */
4263         function fix_url($url) {
4264                 if (strpos($url, '://') === false) {
4265                         $url = 'http://' . $url;
4266                 } else if (substr($url, 0, 5) == 'feed:') {
4267                         $url = 'http:' . substr($url, 5);
4268                 }
4269
4270                 //prepend slash if the URL has no slash in it
4271                 // "http://www.example" -> "http://www.example/"
4272                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
4273                         $url .= '/';
4274                 }
4275
4276                 if ($url != "http:///")
4277                         return $url;
4278                 else
4279                         return '';
4280         }
4281
4282         function validate_feed_url($url) {
4283                 $parts = parse_url($url);
4284
4285                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
4286
4287         }
4288
4289         function get_article_enclosures($link, $id) {
4290
4291                 $query = "SELECT * FROM ttrss_enclosures
4292                         WHERE post_id = '$id' AND content_url != ''";
4293
4294                 $rv = array();
4295
4296                 $result = db_query($link, $query);
4297
4298                 if (db_num_rows($result) > 0) {
4299                         while ($line = db_fetch_assoc($result)) {
4300                                 array_push($rv, $line);
4301                         }
4302                 }
4303
4304                 return $rv;
4305         }
4306
4307         function api_get_feeds($link, $cat_id, $unread_only, $limit, $offset, $include_nested = false) {
4308
4309                         $feeds = array();
4310
4311                         /* Labels */
4312
4313                         if ($cat_id == -4 || $cat_id == -2) {
4314                                 $counters = getLabelCounters($link, true);
4315
4316                                 foreach (array_values($counters) as $cv) {
4317
4318                                         $unread = $cv["counter"];
4319
4320                                         if ($unread || !$unread_only) {
4321
4322                                                 $row = array(
4323                                                                 "id" => $cv["id"],
4324                                                                 "title" => $cv["description"],
4325                                                                 "unread" => $cv["counter"],
4326                                                                 "cat_id" => -2,
4327                                                         );
4328
4329                                                 array_push($feeds, $row);
4330                                         }
4331                                 }
4332                         }
4333
4334                         /* Virtual feeds */
4335
4336                         if ($cat_id == -4 || $cat_id == -1) {
4337                                 foreach (array(-1, -2, -3, -4, -6, 0) as $i) {
4338                                         $unread = getFeedUnread($link, $i);
4339
4340                                         if ($unread || !$unread_only) {
4341                                                 $title = getFeedTitle($link, $i);
4342
4343                                                 $row = array(
4344                                                                 "id" => $i,
4345                                                                 "title" => $title,
4346                                                                 "unread" => $unread,
4347                                                                 "cat_id" => -1,
4348                                                         );
4349                                                 array_push($feeds, $row);
4350                                         }
4351
4352                                 }
4353                         }
4354
4355                         /* Child cats */
4356
4357                         if ($include_nested && $cat_id) {
4358                                 $result = db_query($link, "SELECT
4359                                         id, title FROM ttrss_feed_categories
4360                                         WHERE parent_cat = '$cat_id' AND owner_uid = " . $_SESSION["uid"] .
4361                                 " ORDER BY id, title");
4362
4363                                 while ($line = db_fetch_assoc($result)) {
4364                                         $unread = getFeedUnread($link, $line["id"], true) +
4365                                                 getCategoryChildrenUnread($link, $line["id"]);
4366
4367                                         if ($unread || !$unread_only) {
4368                                                 $row = array(
4369                                                                 "id" => $line["id"],
4370                                                                 "title" => $line["title"],
4371                                                                 "unread" => $unread,
4372                                                                 "is_cat" => true,
4373                                                         );
4374                                                 array_push($feeds, $row);
4375                                         }
4376                                 }
4377                         }
4378
4379                         /* Real feeds */
4380
4381                         if ($limit) {
4382                                 $limit_qpart = "LIMIT $limit OFFSET $offset";
4383                         } else {
4384                                 $limit_qpart = "";
4385                         }
4386
4387                         if ($cat_id == -4 || $cat_id == -3) {
4388                                 $result = db_query($link, "SELECT
4389                                         id, feed_url, cat_id, title, order_id, ".
4390                                                 SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
4391                                                 FROM ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"] .
4392                                                 " ORDER BY cat_id, title " . $limit_qpart);
4393                         } else {
4394
4395                                 if ($cat_id)
4396                                         $cat_qpart = "cat_id = '$cat_id'";
4397                                 else
4398                                         $cat_qpart = "cat_id IS NULL";
4399
4400                                 $result = db_query($link, "SELECT
4401                                         id, feed_url, cat_id, title, order_id, ".
4402                                                 SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
4403                                                 FROM ttrss_feeds WHERE
4404                                                 $cat_qpart AND owner_uid = " . $_SESSION["uid"] .
4405                                                 " ORDER BY cat_id, title " . $limit_qpart);
4406                         }
4407
4408                         while ($line = db_fetch_assoc($result)) {
4409
4410                                 $unread = getFeedUnread($link, $line["id"]);
4411
4412                                 $has_icon = feed_has_icon($line['id']);
4413
4414                                 if ($unread || !$unread_only) {
4415
4416                                         $row = array(
4417                                                         "feed_url" => $line["feed_url"],
4418                                                         "title" => $line["title"],
4419                                                         "id" => (int)$line["id"],
4420                                                         "unread" => (int)$unread,
4421                                                         "has_icon" => $has_icon,
4422                                                         "cat_id" => (int)$line["cat_id"],
4423                                                         "last_updated" => strtotime($line["last_updated"]),
4424                                                         "order_id" => (int) $line["order_id"],
4425                                                 );
4426
4427                                         array_push($feeds, $row);
4428                                 }
4429                         }
4430
4431                 return $feeds;
4432         }
4433
4434         function api_get_headlines($link, $feed_id, $limit, $offset,
4435                                 $filter, $is_cat, $show_excerpt, $show_content, $view_mode, $order,
4436                                 $include_attachments, $since_id,
4437                                 $search = "", $search_mode = "", $match_on = "",
4438                                 $include_nested = false, $sanitize_content = true) {
4439
4440                         $qfh_ret = queryFeedHeadlines($link, $feed_id, $limit,
4441                                 $view_mode, $is_cat, $search, $search_mode, $match_on,
4442                                 $order, $offset, 0, false, $since_id, $include_nested);
4443
4444                         $result = $qfh_ret[0];
4445                         $feed_title = $qfh_ret[1];
4446
4447                         $headlines = array();
4448
4449                         while ($line = db_fetch_assoc($result)) {
4450                                 $is_updated = ($line["last_read"] == "" &&
4451                                         ($line["unread"] != "t" && $line["unread"] != "1"));
4452
4453                                 $tags = explode(",", $line["tag_cache"]);
4454                                 $labels = json_decode($line["label_cache"], true);
4455
4456                                 //if (!$tags) $tags = get_article_tags($link, $line["id"]);
4457                                 //if (!$labels) $labels = get_article_labels($link, $line["id"]);
4458
4459                                 $headline_row = array(
4460                                                 "id" => (int)$line["id"],
4461                                                 "unread" => sql_bool_to_bool($line["unread"]),
4462                                                 "marked" => sql_bool_to_bool($line["marked"]),
4463                                                 "published" => sql_bool_to_bool($line["published"]),
4464                                                 "updated" => strtotime($line["updated"]),
4465                                                 "is_updated" => $is_updated,
4466                                                 "title" => $line["title"],
4467                                                 "link" => $line["link"],
4468                                                 "feed_id" => $line["feed_id"],
4469                                                 "tags" => $tags,
4470                                         );
4471
4472                                         if ($include_attachments)
4473                                                 $headline_row['attachments'] = get_article_enclosures($link,
4474                                                         $line['id']);
4475
4476                                 if ($show_excerpt) {
4477                                         $excerpt = truncate_string(strip_tags($line["content_preview"]), 100);
4478                                         $headline_row["excerpt"] = $excerpt;
4479                                 }
4480
4481                                 if ($show_content) {
4482
4483                                         if ($line["cached_content"] != "") {
4484                                                 $line["content_preview"] =& $line["cached_content"];
4485                                         }
4486
4487                                         if ($sanitize_content) {
4488                                                 $headline_row["content"] = sanitize($link,
4489                                                         $line["content_preview"], false, false, $line["site_url"]);
4490                                         } else {
4491                                                 $headline_row["content"] = $line["content_preview"];
4492                                         }
4493                                 }
4494
4495                                 // unify label output to ease parsing
4496                                 if ($labels["no-labels"] == 1) $labels = array();
4497
4498                                 $headline_row["labels"] = $labels;
4499
4500                                 $headline_row["feed_title"] = $line["feed_title"];
4501
4502                                 $headline_row["comments_count"] = (int)$line["num_comments"];
4503                                 $headline_row["comments_link"] = $line["comments"];
4504
4505                                 $headline_row["always_display_attachments"] = sql_bool_to_bool($line["always_display_enclosures"]);
4506
4507                                 array_push($headlines, $headline_row);
4508                         }
4509
4510                         return $headlines;
4511         }
4512
4513         function generate_error_feed($link, $error) {
4514                 $reply = array();
4515
4516                 $reply['headlines']['id'] = -6;
4517                 $reply['headlines']['is_cat'] = false;
4518
4519                 $reply['headlines']['toolbar'] = '';
4520                 $reply['headlines']['content'] = "<div class='whiteBox'>". $error . "</div>";
4521
4522                 $reply['headlines-info'] = array("count" => 0,
4523                         "vgroup_last_feed" => '',
4524                         "unread" => 0,
4525                         "disable_cache" => true);
4526
4527                 return $reply;
4528         }
4529
4530
4531         function generate_dashboard_feed($link) {
4532                 $reply = array();
4533
4534                 $reply['headlines']['id'] = -5;
4535                 $reply['headlines']['is_cat'] = false;
4536
4537                 $reply['headlines']['toolbar'] = '';
4538                 $reply['headlines']['content'] = "<div class='whiteBox'>".__('No feed selected.');
4539
4540                 $reply['headlines']['content'] .= "<p class=\"small\"><span class=\"insensitive\">";
4541
4542                 $result = db_query($link, "SELECT ".SUBSTRING_FOR_DATE."(MAX(last_updated), 1, 19) AS last_updated FROM ttrss_feeds
4543                         WHERE owner_uid = " . $_SESSION['uid']);
4544
4545                 $last_updated = db_fetch_result($result, 0, "last_updated");
4546                 $last_updated = make_local_datetime($link, $last_updated, false);
4547
4548                 $reply['headlines']['content'] .= sprintf(__("Feeds last updated at %s"), $last_updated);
4549
4550                 $result = db_query($link, "SELECT COUNT(id) AS num_errors
4551                         FROM ttrss_feeds WHERE last_error != '' AND owner_uid = ".$_SESSION["uid"]);
4552
4553                 $num_errors = db_fetch_result($result, 0, "num_errors");
4554
4555                 if ($num_errors > 0) {
4556                         $reply['headlines']['content'] .= "<br/>";
4557                         $reply['headlines']['content'] .= "<a class=\"insensitive\" href=\"#\" onclick=\"showFeedsWithErrors()\">".
4558                                 __('Some feeds have update errors (click for details)')."</a>";
4559                 }
4560                 $reply['headlines']['content'] .= "</span></p>";
4561
4562                 $reply['headlines-info'] = array("count" => 0,
4563                         "vgroup_last_feed" => '',
4564                         "unread" => 0,
4565                         "disable_cache" => true);
4566
4567                 return $reply;
4568         }
4569
4570         function save_email_address($link, $email) {
4571                 // FIXME: implement persistent storage of emails
4572
4573                 if (!$_SESSION['stored_emails'])
4574                         $_SESSION['stored_emails'] = array();
4575
4576                 if (!in_array($email, $_SESSION['stored_emails']))
4577                         array_push($_SESSION['stored_emails'], $email);
4578         }
4579
4580         function update_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
4581                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4582
4583                 $sql_is_cat = bool_to_sql_bool($is_cat);
4584
4585                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
4586                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
4587                         AND owner_uid = " . $owner_uid);
4588
4589                 if (db_num_rows($result) == 1) {
4590                         $key = db_escape_string(sha1(uniqid(rand(), true)));
4591
4592                         db_query($link, "UPDATE ttrss_access_keys SET access_key = '$key'
4593                                 WHERE feed_id = '$feed_id' AND is_cat = $sql_is_cat
4594                                 AND owner_uid = " . $owner_uid);
4595
4596                         return $key;
4597
4598                 } else {
4599                         return get_feed_access_key($link, $feed_id, $is_cat, $owner_uid);
4600                 }
4601         }
4602
4603         function get_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
4604
4605                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4606
4607                 $sql_is_cat = bool_to_sql_bool($is_cat);
4608
4609                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
4610                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
4611                         AND owner_uid = " . $owner_uid);
4612
4613                 if (db_num_rows($result) == 1) {
4614                         return db_fetch_result($result, 0, "access_key");
4615                 } else {
4616                         $key = db_escape_string(sha1(uniqid(rand(), true)));
4617
4618                         $result = db_query($link, "INSERT INTO ttrss_access_keys
4619                                 (access_key, feed_id, is_cat, owner_uid)
4620                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
4621
4622                         return $key;
4623                 }
4624                 return false;
4625         }
4626
4627         function get_feeds_from_html($url, $content)
4628         {
4629                 $url     = fix_url($url);
4630                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
4631
4632                 libxml_use_internal_errors(true);
4633
4634                 $doc = new DOMDocument();
4635                 $doc->loadHTML($content);
4636                 $xpath = new DOMXPath($doc);
4637                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
4638                 $feedUrls = array();
4639                 foreach ($entries as $entry) {
4640                         if ($entry->hasAttribute('href')) {
4641                                 $title = $entry->getAttribute('title');
4642                                 if ($title == '') {
4643                                         $title = $entry->getAttribute('type');
4644                                 }
4645                                 $feedUrl = rewrite_relative_url(
4646                                         $baseUrl, $entry->getAttribute('href')
4647                                 );
4648                                 $feedUrls[$feedUrl] = $title;
4649                         }
4650                 }
4651                 return $feedUrls;
4652         }
4653
4654         function is_html($content) {
4655                 return preg_match("/<html|DOCTYPE html/i", substr($content, 0, 20)) !== 0;
4656         }
4657
4658         function url_is_html($url, $login = false, $pass = false) {
4659                 return is_html(fetch_file_contents($url, false, $login, $pass));
4660         }
4661
4662         function print_label_select($link, $name, $value, $attributes = "") {
4663
4664                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
4665                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
4666
4667                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
4668                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
4669
4670                 while ($line = db_fetch_assoc($result)) {
4671
4672                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
4673
4674                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
4675                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
4676
4677                 }
4678
4679 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
4680
4681                 print "</select>";
4682
4683
4684         }
4685
4686         function format_article_enclosures($link, $id, $always_display_enclosures,
4687                                         $article_content) {
4688
4689                 $result = get_article_enclosures($link, $id);
4690                 $rv = '';
4691
4692                 if (count($result) > 0) {
4693
4694                         $entries_html = array();
4695                         $entries = array();
4696
4697                         foreach ($result as $line) {
4698
4699                                 $url = $line["content_url"];
4700                                 $ctype = $line["content_type"];
4701
4702                                 if (!$ctype) $ctype = __("unknown type");
4703
4704                                 $filename = substr($url, strrpos($url, "/")+1);
4705
4706 #                               $player = format_inline_player($link, $url, $ctype);
4707
4708 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
4709 #                                       $filename . " (" . $ctype . ")" . "</a>";
4710
4711                                 $entry = "<div onclick=\"window.open('".htmlspecialchars($url)."')\"
4712                                         dojoType=\"dijit.MenuItem\">$filename ($ctype)</div>";
4713
4714                                 array_push($entries_html, $entry);
4715
4716                                 $entry = array();
4717
4718                                 $entry["type"] = $ctype;
4719                                 $entry["filename"] = $filename;
4720                                 $entry["url"] = $url;
4721
4722                                 array_push($entries, $entry);
4723                         }
4724
4725                         if (!get_pref($link, "STRIP_IMAGES")) {
4726                                 if ($always_display_enclosures ||
4727                                                         !preg_match("/<img/i", $article_content)) {
4728
4729                                         foreach ($entries as $entry) {
4730
4731                                                 if (preg_match("/image/", $entry["type"]) ||
4732                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
4733
4734                                                                 $rv .= "<p><img
4735                                                                 alt=\"".htmlspecialchars($entry["filename"])."\"
4736                                                                 src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
4737
4738                                                 }
4739                                         }
4740                                 }
4741                         }
4742
4743                         $rv .= "<br/><div dojoType=\"dijit.form.DropDownButton\">".
4744                                 "<span>" . __('Attachments')."</span>";
4745                         $rv .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
4746
4747                         foreach ($entries_html as $entry) { $rv .= $entry; };
4748
4749                         $rv .= "</div></div>";
4750                 }
4751
4752                 return $rv;
4753         }
4754
4755         function getLastArticleId($link) {
4756                 $result = db_query($link, "SELECT MAX(ref_id) AS id FROM ttrss_user_entries
4757                         WHERE owner_uid = " . $_SESSION["uid"]);
4758
4759                 if (db_num_rows($result) == 1) {
4760                         return db_fetch_result($result, 0, "id");
4761                 } else {
4762                         return -1;
4763                 }
4764         }
4765
4766         function build_url($parts) {
4767                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
4768         }
4769
4770         /**
4771          * Converts a (possibly) relative URL to a absolute one.
4772          *
4773          * @param string $url     Base URL (i.e. from where the document is)
4774          * @param string $rel_url Possibly relative URL in the document
4775          *
4776          * @return string Absolute URL
4777          */
4778         function rewrite_relative_url($url, $rel_url) {
4779                 if (strpos($rel_url, "magnet:") === 0) {
4780                         return $rel_url;
4781                 } else if (strpos($rel_url, "://") !== false) {
4782                         return $rel_url;
4783                 } else if (strpos($rel_url, "//") === 0) {
4784                         # protocol-relative URL (rare but they exist)
4785                         return $rel_url;
4786                 } else if (strpos($rel_url, "/") === 0)
4787                 {
4788                         $parts = parse_url($url);
4789                         $parts['path'] = $rel_url;
4790
4791                         return build_url($parts);
4792
4793                 } else {
4794                         $parts = parse_url($url);
4795                         if (!isset($parts['path'])) {
4796                                 $parts['path'] = '/';
4797                         }
4798                         $dir = $parts['path'];
4799                         if (substr($dir, -1) !== '/') {
4800                                 $dir = dirname($parts['path']);
4801                                 $dir !== '/' && $dir .= '/';
4802                         }
4803                         $parts['path'] = $dir . $rel_url;
4804
4805                         return build_url($parts);
4806                 }
4807         }
4808
4809         function sphinx_search($query, $offset = 0, $limit = 30) {
4810                 require_once 'lib/sphinxapi.php';
4811
4812                 $sphinxClient = new SphinxClient();
4813
4814                 $sphinxClient->SetServer('localhost', 9312);
4815                 $sphinxClient->SetConnectTimeout(1);
4816
4817                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
4818                         'feed_title' => 20));
4819
4820                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
4821                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
4822                 $sphinxClient->SetLimits($offset, $limit, 1000);
4823                 $sphinxClient->SetArrayResult(false);
4824                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
4825
4826                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
4827
4828                 $ids = array();
4829
4830                 if (is_array($result['matches'])) {
4831                         foreach (array_keys($result['matches']) as $int_id) {
4832                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
4833                                 array_push($ids, $ref_id);
4834                         }
4835                 }
4836
4837                 return $ids;
4838         }
4839
4840         function cleanup_tags($link, $days = 14, $limit = 1000) {
4841
4842                 if (DB_TYPE == "pgsql") {
4843                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
4844                 } else if (DB_TYPE == "mysql") {
4845                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
4846                 }
4847
4848                 $tags_deleted = 0;
4849
4850                 while ($limit > 0) {
4851                         $limit_part = 500;
4852
4853                         $query = "SELECT ttrss_tags.id AS id
4854                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
4855                                 WHERE post_int_id = int_id AND $interval_query AND
4856                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
4857
4858                         $result = db_query($link, $query);
4859
4860                         $ids = array();
4861
4862                         while ($line = db_fetch_assoc($result)) {
4863                                 array_push($ids, $line['id']);
4864                         }
4865
4866                         if (count($ids) > 0) {
4867                                 $ids = join(",", $ids);
4868                                 print ".";
4869
4870                                 $tmp_result = db_query($link, "DELETE FROM ttrss_tags WHERE id IN ($ids)");
4871                                 $tags_deleted += db_affected_rows($link, $tmp_result);
4872                         } else {
4873                                 break;
4874                         }
4875
4876                         $limit -= $limit_part;
4877                 }
4878
4879                 print "\n";
4880
4881                 return $tags_deleted;
4882         }
4883
4884         function print_user_stylesheet($link) {
4885                 $value = get_pref($link, 'USER_STYLESHEET');
4886
4887                 if ($value) {
4888                         print "<style type=\"text/css\">";
4889                         print str_replace("<br/>", "\n", $value);
4890                         print "</style>";
4891                 }
4892
4893         }
4894
4895 /*      function rewrite_urls($line) {
4896                 global $url_regex;
4897
4898                 $urls = null;
4899
4900                 $result = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
4901                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $line);
4902
4903                 return $result;
4904         } */
4905
4906         function rewrite_urls($html) {
4907                 libxml_use_internal_errors(true);
4908
4909                 $charset_hack = '<head>
4910                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
4911                 </head>';
4912
4913                 $doc = new DOMDocument();
4914                 $doc->loadHTML($charset_hack . $html);
4915                 $xpath = new DOMXPath($doc);
4916
4917                 $entries = $xpath->query('//*/text()');
4918
4919                 foreach ($entries as $entry) {
4920                         if (strstr($entry->wholeText, "://") !== false) {
4921                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
4922                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
4923
4924                                 if ($text != $entry->wholeText) {
4925                                         $cdoc = new DOMDocument();
4926                                         $cdoc->loadHTML($charset_hack . $text);
4927
4928
4929                                         foreach ($cdoc->childNodes as $cnode) {
4930                                                 $cnode = $doc->importNode($cnode, true);
4931
4932                                                 if ($cnode) {
4933                                                         $entry->parentNode->insertBefore($cnode);
4934                                                 }
4935                                         }
4936
4937                                         $entry->parentNode->removeChild($entry);
4938
4939                                 }
4940                         }
4941                 }
4942
4943                 $node = $doc->getElementsByTagName('body')->item(0);
4944
4945                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
4946                 if ($node)
4947                         return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
4948                 else
4949                         return $html;
4950         }
4951
4952         function filter_to_sql($link, $filter, $owner_uid) {
4953                 $query = array();
4954
4955                 if (DB_TYPE == "pgsql")
4956                         $reg_qpart = "~";
4957                 else
4958                         $reg_qpart = "REGEXP";
4959
4960                 foreach ($filter["rules"] AS $rule) {
4961                         $regexp_valid = preg_match('/' . $rule['reg_exp'] . '/',
4962                                 $rule['reg_exp']) !== FALSE;
4963
4964                         if ($regexp_valid) {
4965
4966                                 $rule['reg_exp'] = db_escape_string($rule['reg_exp']);
4967
4968                                 switch ($rule["type"]) {
4969                                         case "title":
4970                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
4971                                                         $rule['reg_exp'] . "')";
4972                                                 break;
4973                                         case "content":
4974                                                 $qpart = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
4975                                                         $rule['reg_exp'] . "')";
4976                                                 break;
4977                                         case "both":
4978                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
4979                                                         $rule['reg_exp'] . "') OR LOWER(" .
4980                                                         "ttrss_entries.content) $reg_qpart LOWER('" . $rule['reg_exp'] . "')";
4981                                                 break;
4982                                         case "tag":
4983                                                 $qpart = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
4984                                                         $rule['reg_exp'] . "')";
4985                                                 break;
4986                                         case "link":
4987                                                 $qpart = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
4988                                                         $rule['reg_exp'] . "')";
4989                                                 break;
4990                                         case "author":
4991                                                 $qpart = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
4992                                                         $rule['reg_exp'] . "')";
4993                                                 break;
4994                                 }
4995
4996                                 if (isset($rule["feed_id"]) && $rule["feed_id"] > 0) {
4997                                         $qpart .= " AND feed_id = " . db_escape_string($rule["feed_id"]);
4998                                 }
4999
5000                                 if (isset($rule["cat_id"])) {
5001
5002                                         if ($rule["cat_id"] > 0) {
5003                                                 $children = getChildCategories($link, $rule["cat_id"], $owner_uid);
5004                                                 array_push($children, $rule["cat_id"]);
5005
5006                                                 $children = join(",", $children);
5007
5008                                                 $cat_qpart = "cat_id IN ($children)";
5009                                         } else {
5010                                                 $cat_qpart = "cat_id IS NULL";
5011                                         }
5012
5013                                         $qpart .= " AND $cat_qpart";
5014                                 }
5015
5016                                 array_push($query, "($qpart)");
5017
5018                         }
5019                 }
5020
5021                 if (count($query) > 0) {
5022                         return "(" . join($filter["match_any_rule"] ? "OR" : "AND", $query) . ")";
5023                 } else {
5024                         return "(false)";
5025                 }
5026         }
5027
5028         // Status codes:
5029         // -1  - never connected
5030         // 0   - no data received
5031         // 1   - data received successfully
5032         // 2   - did not receive valid data
5033         // >10 - server error, code + 10 (e.g. 16 means server error 6)
5034
5035         function get_linked_feeds($link, $instance_id = false) {
5036                 if ($instance_id)
5037                         $instance_qpart = "id = '$instance_id' AND ";
5038                 else
5039                         $instance_qpart = "";
5040
5041                 if (DB_TYPE == "pgsql") {
5042                         $date_qpart = "last_connected < NOW() - INTERVAL '6 hours'";
5043                 } else {
5044                         $date_qpart = "last_connected < DATE_SUB(NOW(), INTERVAL 6 HOUR)";
5045                 }
5046
5047                 $result = db_query($link, "SELECT id, access_key, access_url FROM ttrss_linked_instances
5048                         WHERE $instance_qpart $date_qpart ORDER BY last_connected");
5049
5050                 while ($line = db_fetch_assoc($result)) {
5051                         $id = $line['id'];
5052
5053                         _debug("Updating: " . $line['access_url'] . " ($id)");
5054
5055                         $fetch_url = $line['access_url'] . '/public.php?op=fbexport';
5056                         $post_query = 'key=' . $line['access_key'];
5057
5058                         $feeds = fetch_file_contents($fetch_url, false, false, false, $post_query);
5059
5060                         // try doing it the old way
5061                         if (!$feeds) {
5062                                 $fetch_url = $line['access_url'] . '/backend.php?op=fbexport';
5063                                 $feeds = fetch_file_contents($fetch_url, false, false, false, $post_query);
5064                         }
5065
5066                         if ($feeds) {
5067                                 $feeds = json_decode($feeds, true);
5068
5069                                 if ($feeds) {
5070                                         if ($feeds['error']) {
5071                                                 $status = $feeds['error']['code'] + 10;
5072
5073                                                 // access denied
5074                                                 if ($status == 16) {
5075                                                         db_query($link, "DELETE FROM ttrss_linked_feeds
5076                                                                 WHERE instance_id = '$id'");
5077                                                 }
5078                                         } else {
5079                                                 $status = 1;
5080
5081                                                 if (count($feeds['feeds']) > 0) {
5082
5083                                                         db_query($link, "DELETE FROM ttrss_linked_feeds
5084                                                                 WHERE instance_id = '$id'");
5085
5086                                                         foreach ($feeds['feeds'] as $feed) {
5087                                                                 $feed_url = db_escape_string($feed['feed_url']);
5088                                                                 $title = db_escape_string($feed['title']);
5089                                                                 $subscribers = db_escape_string($feed['subscribers']);
5090                                                                 $site_url = db_escape_string($feed['site_url']);
5091
5092                                                                 db_query($link, "INSERT INTO ttrss_linked_feeds
5093                                                                         (feed_url, site_url, title, subscribers, instance_id, created, updated)
5094                                                                 VALUES
5095                                                                         ('$feed_url', '$site_url', '$title', '$subscribers', '$id', NOW(), NOW())");
5096                                                         }
5097                                                 } else {
5098                                                         // received 0 feeds, this might indicate that
5099                                                         // the instance on the other hand is rebuilding feedbrowser cache
5100                                                         // we will try again later
5101
5102                                                         // TODO: maybe perform expiration based on updated here?
5103                                                 }
5104
5105                                                 _debug("Processed " . count($feeds['feeds']) . " feeds.");
5106                                         }
5107                                 } else {
5108                                         $status = 2;
5109                                 }
5110
5111                         } else {
5112                                 $status = 0;
5113                         }
5114
5115                         _debug("Status: $status");
5116
5117                         db_query($link, "UPDATE ttrss_linked_instances SET
5118                                 last_status_out = '$status', last_connected = NOW() WHERE id = '$id'");
5119
5120                 }
5121         }
5122
5123         function make_feed_browser($link, $search, $limit, $mode = 1) {
5124
5125                 $owner_uid = $_SESSION["uid"];
5126                 $rv = '';
5127
5128                 if ($search) {
5129                         $search_qpart = "AND (UPPER(feed_url) LIKE UPPER('%$search%') OR
5130                                                 UPPER(title) LIKE UPPER('%$search%'))";
5131                 } else {
5132                         $search_qpart = "";
5133                 }
5134
5135                 if ($mode == 1) {
5136                         /* $result = db_query($link, "SELECT feed_url, subscribers FROM
5137                          ttrss_feedbrowser_cache WHERE (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
5138                         WHERE tf.feed_url = ttrss_feedbrowser_cache.feed_url
5139                         AND owner_uid = '$owner_uid') $search_qpart
5140                         ORDER BY subscribers DESC LIMIT $limit"); */
5141
5142                         $result = db_query($link, "SELECT feed_url, site_url, title, SUM(subscribers) AS subscribers FROM
5143                                                 (SELECT feed_url, site_url, title, subscribers FROM ttrss_feedbrowser_cache UNION ALL
5144                                                         SELECT feed_url, site_url, title, subscribers FROM ttrss_linked_feeds) AS qqq
5145                                                 WHERE
5146                                                         (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
5147                                                                 WHERE tf.feed_url = qqq.feed_url
5148                                                                         AND owner_uid = '$owner_uid') $search_qpart
5149                                                 GROUP BY feed_url, site_url, title ORDER BY subscribers DESC LIMIT $limit");
5150
5151                 } else if ($mode == 2) {
5152                         $result = db_query($link, "SELECT *,
5153                                                 (SELECT COUNT(*) FROM ttrss_user_entries WHERE
5154                                                         orig_feed_id = ttrss_archived_feeds.id) AS articles_archived
5155                                                 FROM
5156                                                         ttrss_archived_feeds
5157                                                 WHERE
5158                                                 (SELECT COUNT(*) FROM ttrss_feeds
5159                                                         WHERE ttrss_feeds.feed_url = ttrss_archived_feeds.feed_url AND
5160                                                                 owner_uid = '$owner_uid') = 0   AND
5161                                                 owner_uid = '$owner_uid' $search_qpart
5162                                                 ORDER BY id DESC LIMIT $limit");
5163                 }
5164
5165                 $feedctr = 0;
5166
5167                 while ($line = db_fetch_assoc($result)) {
5168
5169                         if ($mode == 1) {
5170
5171                                 $feed_url = htmlspecialchars($line["feed_url"]);
5172                                 $site_url = htmlspecialchars($line["site_url"]);
5173                                 $subscribers = $line["subscribers"];
5174
5175                                 $check_box = "<input onclick='toggleSelectListRow2(this)'
5176                                                         dojoType=\"dijit.form.CheckBox\"
5177                                                         type=\"checkbox\" \">";
5178
5179                                 $class = ($feedctr % 2) ? "even" : "odd";
5180
5181                                 $site_url = "<a target=\"_blank\"
5182                                                         href=\"$site_url\">
5183                                                         <span class=\"fb_feedTitle\">".
5184                                 htmlspecialchars($line["title"])."</span></a>";
5185
5186                                 $feed_url = "<a target=\"_blank\" class=\"fb_feedUrl\"
5187                                                         href=\"$feed_url\"><img src='images/feed-icon-12x12.png'
5188                                                         style='vertical-align : middle'></a>";
5189
5190                                 $rv .= "<li>$check_box $feed_url $site_url".
5191                                                         "&nbsp;<span class='subscribers'>($subscribers)</span></li>";
5192
5193                         } else if ($mode == 2) {
5194                                 $feed_url = htmlspecialchars($line["feed_url"]);
5195                                 $site_url = htmlspecialchars($line["site_url"]);
5196                                 $title = htmlspecialchars($line["title"]);
5197
5198                                 $check_box = "<input onclick='toggleSelectListRow2(this)' dojoType=\"dijit.form.CheckBox\"
5199                                                         type=\"checkbox\">";
5200
5201                                 $class = ($feedctr % 2) ? "even" : "odd";
5202
5203                                 if ($line['articles_archived'] > 0) {
5204                                         $archived = sprintf(__("%d archived articles"), $line['articles_archived']);
5205                                         $archived = "&nbsp;<span class='subscribers'>($archived)</span>";
5206                                 } else {
5207                                         $archived = '';
5208                                 }
5209
5210                                 $site_url = "<a target=\"_blank\"
5211                                                         href=\"$site_url\">
5212                                                         <span class=\"fb_feedTitle\">".
5213                                 htmlspecialchars($line["title"])."</span></a>";
5214
5215                                 $feed_url = "<a target=\"_blank\" class=\"fb_feedUrl\"
5216                                                         href=\"$feed_url\"><img src='images/feed-icon-12x12.png'
5217                                                         style='vertical-align : middle'></a>";
5218
5219
5220                                 $rv .= "<li id=\"FBROW-".$line["id"]."\">".
5221                                                         "$check_box $feed_url $site_url $archived</li>";
5222                         }
5223
5224                         ++$feedctr;
5225                 }
5226
5227                 if ($feedctr == 0) {
5228                         $rv .= "<li style=\"text-align : center\"><p>".__('No feeds found.')."</p></li>";
5229                 }
5230
5231                 return $rv;
5232         }
5233
5234         if (!function_exists('gzdecode')) {
5235                 function gzdecode($string) { // no support for 2nd argument
5236                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
5237                                 base64_encode($string));
5238                 }
5239         }
5240
5241         function perform_data_import($link, $filename, $owner_uid) {
5242
5243                 $num_imported = 0;
5244                 $num_processed = 0;
5245                 $num_feeds_created = 0;
5246
5247                 $doc = @DOMDocument::load($filename);
5248
5249                 if (!$doc) {
5250                         $contents = file_get_contents($filename);
5251
5252                         if ($contents) {
5253                                 $data = @gzuncompress($contents);
5254                         }
5255
5256                         if (!$data) {
5257                                 $data = @gzdecode($contents);
5258                         }
5259
5260                         if ($data)
5261                                 $doc = DOMDocument::loadXML($data);
5262                 }
5263
5264                 if ($doc) {
5265
5266                         $xpath = new DOMXpath($doc);
5267
5268                         $container = $doc->firstChild;
5269
5270                         if ($container && $container->hasAttribute('schema-version')) {
5271                                 $schema_version = $container->getAttribute('schema-version');
5272
5273                                 if ($schema_version != SCHEMA_VERSION) {
5274                                         print "<p>" .__("Could not import: incorrect schema version.") . "</p>";
5275                                         return;
5276                                 }
5277
5278                         } else {
5279                                 print "<p>" . __("Could not import: unrecognized document format.") . "</p>";
5280                                 return;
5281                         }
5282
5283                         $articles = $xpath->query("//article");
5284
5285                         foreach ($articles as $article_node) {
5286                                 if ($article_node->childNodes) {
5287
5288                                         $ref_id = 0;
5289
5290                                         $article = array();
5291
5292                                         foreach ($article_node->childNodes as $child) {
5293                                                 if ($child->nodeName != 'label_cache')
5294                                                         $article[$child->nodeName] = db_escape_string($child->nodeValue);
5295                                                 else
5296                                                         $article[$child->nodeName] = $child->nodeValue;
5297                                         }
5298
5299                                         //print_r($article);
5300
5301                                         if ($article['guid']) {
5302
5303                                                 ++$num_processed;
5304
5305                                                 //db_query($link, "BEGIN");
5306
5307                                                 //print 'GUID:' . $article['guid'] . "\n";
5308
5309                                                 $result = db_query($link, "SELECT id FROM ttrss_entries
5310                                                         WHERE guid = '".$article['guid']."'");
5311
5312                                                 if (db_num_rows($result) == 0) {
5313
5314                                                         $result = db_query($link,
5315                                                                 "INSERT INTO ttrss_entries
5316                                                                         (title,
5317                                                                         guid,
5318                                                                         link,
5319                                                                         updated,
5320                                                                         content,
5321                                                                         content_hash,
5322                                                                         no_orig_date,
5323                                                                         date_updated,
5324                                                                         date_entered,
5325                                                                         comments,
5326                                                                         num_comments,
5327                                                                         author)
5328                                                                 VALUES
5329                                                                         ('".$article['title']."',
5330                                                                         '".$article['guid']."',
5331                                                                         '".$article['link']."',
5332                                                                         '".$article['updated']."',
5333                                                                         '".$article['content']."',
5334                                                                         '".sha1($article['content'])."',
5335                                                                         false,
5336                                                                         NOW(),
5337                                                                         NOW(),
5338                                                                         '',
5339                                                                         '0',
5340                                                                         '')");
5341
5342                                                         $result = db_query($link, "SELECT id FROM ttrss_entries
5343                                                                 WHERE guid = '".$article['guid']."'");
5344
5345                                                         if (db_num_rows($result) != 0) {
5346                                                                 $ref_id = db_fetch_result($result, 0, "id");
5347                                                         }
5348
5349                                                 } else {
5350                                                         $ref_id = db_fetch_result($result, 0, "id");
5351                                                 }
5352
5353                                                 //print "Got ref ID: $ref_id\n";
5354
5355                                                 if ($ref_id) {
5356
5357                                                         $feed_url = $article['feed_url'];
5358                                                         $feed_title = $article['feed_title'];
5359
5360                                                         $feed = 'NULL';
5361
5362                                                         if ($feed_url && $feed_title) {
5363                                                                 $result = db_query($link, "SELECT id FROM ttrss_feeds
5364                                                                         WHERE feed_url = '$feed_url' AND owner_uid = '$owner_uid'");
5365
5366                                                                 if (db_num_rows($result) != 0) {
5367                                                                         $feed = db_fetch_result($result, 0, "id");
5368                                                                 } else {
5369                                                                         // try autocreating feed in Uncategorized...
5370
5371                                                                         $result = db_query($link, "INSERT INTO ttrss_feeds (owner_uid,
5372                                                                                 feed_url, title) VALUES ($owner_uid, '$feed_url', '$feed_title')");
5373
5374                                                                         $result = db_query($link, "SELECT id FROM ttrss_feeds
5375                                                                                 WHERE feed_url = '$feed_url' AND owner_uid = '$owner_uid'");
5376
5377                                                                         if (db_num_rows($result) != 0) {
5378                                                                                 ++$num_feeds_created;
5379
5380                                                                                 $feed = db_fetch_result($result, 0, "id");
5381                                                                         }
5382                                                                 }
5383                                                         }
5384
5385                                                         if ($feed != 'NULL')
5386                                                                 $feed_qpart = "feed_id = $feed";
5387                                                         else
5388                                                                 $feed_qpart = "feed_id IS NULL";
5389
5390                                                         //print "$ref_id / $feed / " . $article['title'] . "\n";
5391
5392                                                         $result = db_query($link, "SELECT int_id FROM ttrss_user_entries
5393                                                                 WHERE ref_id = '$ref_id' AND owner_uid = '$owner_uid' AND $feed_qpart");
5394
5395                                                         if (db_num_rows($result) == 0) {
5396
5397                                                                 $marked = bool_to_sql_bool(sql_bool_to_bool($article['marked']));
5398                                                                 $published = bool_to_sql_bool(sql_bool_to_bool($article['published']));
5399                                                                 $score = (int) $article['score'];
5400
5401                                                                 $tag_cache = $article['tag_cache'];
5402                                                                 $label_cache = db_escape_string($article['label_cache']);
5403                                                                 $note = $article['note'];
5404
5405                                                                 //print "Importing " . $article['title'] . "<br/>";
5406
5407                                                                 ++$num_imported;
5408
5409                                                                 $result = db_query($link,
5410                                                                         "INSERT INTO ttrss_user_entries
5411                                                                         (ref_id, owner_uid, feed_id, unread, last_read, marked,
5412                                                                                 published, score, tag_cache, label_cache, uuid, note)
5413                                                                         VALUES ($ref_id, $owner_uid, $feed, false,
5414                                                                                 NULL, $marked, $published, $score, '$tag_cache',
5415                                                                                         '$label_cache', '', '$note')");
5416
5417                                                                 $label_cache = json_decode($label_cache, true);
5418
5419                                                                 if (is_array($label_cache) && $label_cache["no-labels"] != 1) {
5420                                                                         foreach ($label_cache as $label) {
5421
5422                                                                                 label_create($link, $label[1],
5423                                                                                         $label[2], $label[3], $owner_uid);
5424
5425                                                                                 label_add_article($link, $ref_id, $label[1], $owner_uid);
5426
5427                                                                         }
5428                                                                 }
5429
5430                                                                 //db_query($link, "COMMIT");
5431                                                         }
5432                                                 }
5433                                         }
5434                                 }
5435                         }
5436
5437                         print "<p>" .
5438                                 T_sprintf("Finished: %d articles processed, %d imported, %d feeds created.",
5439                                         $num_processed, $num_imported, $num_feeds_created) .
5440                                         "</p>";
5441
5442                 } else {
5443
5444                         print "<p>" . __("Could not load XML document.") . "</p>";
5445
5446                 }
5447         }
5448
5449         function get_random_bytes($length) {
5450                 if (function_exists('openssl_random_pseudo_bytes')) {
5451                         return openssl_random_pseudo_bytes($length);
5452                 } else {
5453                         $output = "";
5454
5455                         for ($i = 0; $i < $length; $i++)
5456                                 $output .= chr(mt_rand(0, 255));
5457
5458                         return $output;
5459                 }
5460         }
5461
5462         function read_stdin() {
5463                 $fp = fopen("php://stdin", "r");
5464
5465                 if ($fp) {
5466                         $line = trim(fgets($fp));
5467                         fclose($fp);
5468                         return $line;
5469                 }
5470
5471                 return null;
5472         }
5473
5474         function tmpdirname($path, $prefix) {
5475                 // Use PHP's tmpfile function to create a temporary
5476                 // directory name. Delete the file and keep the name.
5477                 $tempname = tempnam($path,$prefix);
5478                 if (!$tempname)
5479                         return false;
5480
5481                 if (!unlink($tempname))
5482                         return false;
5483
5484        return $tempname;
5485         }
5486
5487         function getFeedCategory($link, $feed) {
5488                 $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
5489                         WHERE id = '$feed'");
5490
5491                 if (db_num_rows($result) > 0) {
5492                         return db_fetch_result($result, 0, "cat_id");
5493                 } else {
5494                         return false;
5495                 }
5496
5497         }
5498
5499         function create_published_article($link, $title, $url, $content, $labels_str,
5500                         $owner_uid) {
5501
5502                 $guid = sha1($url . $owner_uid); // include owner_uid to prevent global GUID clash
5503                 $content_hash = sha1($content);
5504
5505                 if ($labels_str != "") {
5506                         $labels = explode(",", $labels_str);
5507                 } else {
5508                         $labels = array();
5509                 }
5510
5511                 $rc = false;
5512
5513                 if (!$title) $title = $url;
5514                 if (!$title && !$url) return false;
5515
5516                 if (filter_var($url, FILTER_VALIDATE_URL) === FALSE) return false;
5517
5518                 db_query($link, "BEGIN");
5519
5520                 // only check for our user data here, others might have shared this with different content etc
5521                 $result = db_query($link, "SELECT id FROM ttrss_entries, ttrss_user_entries WHERE
5522                         link = '$url' AND ref_id = id AND owner_uid = '$owner_uid' LIMIT 1");
5523
5524                 if (db_num_rows($result) != 0) {
5525                         $ref_id = db_fetch_result($result, 0, "id");
5526
5527                         $result = db_query($link, "SELECT int_id FROM ttrss_user_entries WHERE
5528                                 ref_id = '$ref_id' AND owner_uid = '$owner_uid' LIMIT 1");
5529
5530                         if (db_num_rows($result) != 0) {
5531                                 $int_id = db_fetch_result($result, 0, "int_id");
5532
5533                                 db_query($link, "UPDATE ttrss_entries SET
5534                                         content = '$content', content_hash = '$content_hash' WHERE id = '$ref_id'");
5535
5536                                 db_query($link, "UPDATE ttrss_user_entries SET published = true WHERE
5537                                                 int_id = '$int_id' AND owner_uid = '$owner_uid'");
5538                         } else {
5539
5540                                 db_query($link, "INSERT INTO ttrss_user_entries
5541                                         (ref_id, uuid, feed_id, orig_feed_id, owner_uid, published, tag_cache, label_cache, last_read, note, unread)
5542                                         VALUES
5543                                         ('$ref_id', '', NULL, NULL, $owner_uid, true, '', '', NOW(), '', false)");
5544                         }
5545
5546                         if (count($labels) != 0) {
5547                                 foreach ($labels as $label) {
5548                                         label_add_article($link, $ref_id, trim($label), $owner_uid);
5549                                 }
5550                         }
5551
5552                         $rc = true;
5553
5554                 } else {
5555                         $result = db_query($link, "INSERT INTO ttrss_entries
5556                                 (title, guid, link, updated, content, content_hash, date_entered, date_updated)
5557                                 VALUES
5558                                 ('$title', '$guid', '$url', NOW(), '$content', '$content_hash', NOW(), NOW())");
5559
5560                         $result = db_query($link, "SELECT id FROM ttrss_entries WHERE guid = '$guid'");
5561
5562                         if (db_num_rows($result) != 0) {
5563                                 $ref_id = db_fetch_result($result, 0, "id");
5564
5565                                 db_query($link, "INSERT INTO ttrss_user_entries
5566                                         (ref_id, uuid, feed_id, orig_feed_id, owner_uid, published, tag_cache, label_cache, last_read, note, unread)
5567                                         VALUES
5568                                         ('$ref_id', '', NULL, NULL, $owner_uid, true, '', '', NOW(), '', false)");
5569
5570                                 if (count($labels) != 0) {
5571                                         foreach ($labels as $label) {
5572                                                 label_add_article($link, $ref_id, trim($label), $owner_uid);
5573                                         }
5574                                 }
5575
5576                                 $rc = true;
5577                         }
5578                 }
5579
5580                 db_query($link, "COMMIT");
5581
5582                 return $rc;
5583         }
5584
5585 ?>