include/functions.php

   1 <?php
   2         define('EXPECTED_CONFIG_VERSION', 25);
   3         define('SCHEMA_VERSION', 94);
   4
   5         $fetch_last_error = false;
   6
   7         function __autoload($class) {
   8                 $class_file = str_replace("_", "/", strtolower(basename($class)));
   9
  10                 $file = dirname(__FILE__)."/../classes/$class_file.php";
  11
  12                 if (file_exists($file)) {
  13                         require $file;
  14                 }
  15         }
  16
  17         mb_internal_encoding("UTF-8");
  18         date_default_timezone_set('UTC');
  19         if (defined('E_DEPRECATED')) {
  20                 error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
  21         } else {
  22                 error_reporting(E_ALL & ~E_NOTICE);
  23         }
  24
  25         require_once 'config.php';
  26
  27         if (DB_TYPE == "pgsql") {
  28                 define('SUBSTRING_FOR_DATE', 'SUBSTRING_FOR_DATE');
  29         } else {
  30                 define('SUBSTRING_FOR_DATE', 'SUBSTRING');
  31         }
  32
  33         define('THEME_VERSION_REQUIRED', 1.1);
  34
  35         /**
  36          * Return available translations names.
  37          *
  38          * @access public
  39          * @return array A array of available translations.
  40          */
  41         function get_translations() {
  42                 $tr = array(
  43                                         "auto"  => "Detect automatically",
  44                                         "ca_CA" => "Català",
  45                                         "en_US" => "English",
  46                                         "es_ES" => "Español",
  47                                         "de_DE" => "Deutsch",
  48                                         "fr_FR" => "Français",
  49                                         "hu_HU" => "Magyar (Hungarian)",
  50                                         "it_IT" => "Italiano",
  51                                         "ja_JP" => "日本語 (Japanese)",
  52                                         "nb_NO" => "Norwegian bokmål",
  53                                         "ru_RU" => "Русский",
  54                                         "pt_BR" => "Portuguese/Brazil",
  55                                         "zh_CN" => "Simplified Chinese");
  56
  57                 return $tr;
  58         }
  59
  60         require_once "lib/accept-to-gettext.php";
  61         require_once "lib/gettext/gettext.inc";
  62
  63         function startup_gettext() {
  64
  65                 # Get locale from Accept-Language header
  66                 $lang = al2gt(array_keys(get_translations()), "text/html");
  67
  68                 if (defined('_TRANSLATION_OVERRIDE_DEFAULT')) {
  69                         $lang = _TRANSLATION_OVERRIDE_DEFAULT;
  70                 }
  71
  72                 if ($_COOKIE["ttrss_lang"] && $_COOKIE["ttrss_lang"] != "auto") {
  73                         $lang = $_COOKIE["ttrss_lang"];
  74                 }
  75
  76                 /* In login action of mobile version */
  77                 if ($_POST["language"] && defined('MOBILE_VERSION')) {
  78                         $lang = $_POST["language"];
  79                         $_COOKIE["ttrss_lang"] = $lang;
  80                 }
  81
  82                 if ($lang) {
  83                         if (defined('LC_MESSAGES')) {
  84                                 _setlocale(LC_MESSAGES, $lang);
  85                         } else if (defined('LC_ALL')) {
  86                                 _setlocale(LC_ALL, $lang);
  87                         }
  88
  89                         if (defined('MOBILE_VERSION')) {
  90                                 _bindtextdomain("messages", "../locale");
  91                         } else {
  92                                 _bindtextdomain("messages", "locale");
  93                         }
  94
  95                         _textdomain("messages");
  96                         _bind_textdomain_codeset("messages", "UTF-8");
  97                 }
  98         }
  99
 100         startup_gettext();
 101
 102         require_once 'db-prefs.php';
 103         require_once 'version.php';
 104
 105         define('MAGPIE_OUTPUT_ENCODING', 'UTF-8');
 106
 107         define('SELF_USER_AGENT', 'Tiny Tiny RSS/' . VERSION . ' (http://tt-rss.org/)');
 108         define('MAGPIE_USER_AGENT', SELF_USER_AGENT);
 109
 110         ini_set('user_agent', SELF_USER_AGENT);
 111
 112         require_once 'lib/pubsubhubbub/publisher.php';
 113
 114         $purifier = false;
 115
 116         $tz_offset = -1;
 117         $utc_tz = new DateTimeZone('UTC');
 118         $schema_version = false;
 119
 120         /**
 121          * Print a timestamped debug message.
 122          *
 123          * @param string $msg The debug message.
 124          * @return void
 125          */
 126         function _debug($msg) {
 127                 if (defined('QUIET') && QUIET) {
 128                         return;
 129                 }
 130                 $ts = strftime("%H:%M:%S", time());
 131                 if (function_exists('posix_getpid')) {
 132                         $ts = "$ts/" . posix_getpid();
 133                 }
 134                 print "[$ts] $msg\n";
 135         } // function _debug
 136
 137         /**
 138          * Purge a feed old posts.
 139          *
 140          * @param mixed $link A database connection.
 141          * @param mixed $feed_id The id of the purged feed.
 142          * @param mixed $purge_interval Olderness of purged posts.
 143          * @param boolean $debug Set to True to enable the debug. False by default.
 144          * @access public
 145          * @return void
 146          */
 147         function purge_feed($link, $feed_id, $purge_interval, $debug = false) {
 148
 149                 if (!$purge_interval) $purge_interval = feed_purge_interval($link, $feed_id);
 150
 151                 $rows = -1;
 152
 153                 $result = db_query($link,
 154                         "SELECT owner_uid FROM ttrss_feeds WHERE id = '$feed_id'");
 155
 156                 $owner_uid = false;
 157
 158                 if (db_num_rows($result) == 1) {
 159                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 160                 }
 161
 162                 if ($purge_interval == -1 || !$purge_interval) {
 163                         if ($owner_uid) {
 164                                 ccache_update($link, $feed_id, $owner_uid);
 165                         }
 166                         return;
 167                 }
 168
 169                 if (!$owner_uid) return;
 170
 171                 if (FORCE_ARTICLE_PURGE == 0) {
 172                         $purge_unread = get_pref($link, "PURGE_UNREAD_ARTICLES",
 173                                 $owner_uid, false);
 174                 } else {
 175                         $purge_unread = true;
 176                         $purge_interval = FORCE_ARTICLE_PURGE;
 177                 }
 178
 179                 if (!$purge_unread) $query_limit = " unread = false AND ";
 180
 181                 if (DB_TYPE == "pgsql") {
 182                         $pg_version = get_pgsql_version($link);
 183
 184                         if (preg_match("/^7\./", $pg_version) || preg_match("/^8\.0/", $pg_version)) {
 185
 186                                 $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 187                                         ttrss_entries.id = ref_id AND
 188                                         marked = false AND
 189                                         feed_id = '$feed_id' AND
 190                                         $query_limit
 191                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 192
 193                         } else {
 194
 195                                 $result = db_query($link, "DELETE FROM ttrss_user_entries
 196                                         USING ttrss_entries
 197                                         WHERE ttrss_entries.id = ref_id AND
 198                                         marked = false AND
 199                                         feed_id = '$feed_id' AND
 200                                         $query_limit
 201                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 202                         }
 203
 204                         $rows = pg_affected_rows($result);
 205
 206                 } else {
 207
 208 /*                      $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 209                                 marked = false AND feed_id = '$feed_id' AND
 210                                 (SELECT date_updated FROM ttrss_entries WHERE
 211                                         id = ref_id) < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)"); */
 212
 213                         $result = db_query($link, "DELETE FROM ttrss_user_entries
 214                                 USING ttrss_user_entries, ttrss_entries
 215                                 WHERE ttrss_entries.id = ref_id AND
 216                                 marked = false AND
 217                                 feed_id = '$feed_id' AND
 218                                 $query_limit
 219                                 ttrss_entries.date_updated < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)");
 220
 221                         $rows = mysql_affected_rows($link);
 222
 223                 }
 224
 225                 ccache_update($link, $feed_id, $owner_uid);
 226
 227                 if ($debug) {
 228                         _debug("Purged feed $feed_id ($purge_interval): deleted $rows articles");
 229                 }
 230         } // function purge_feed
 231
 232         function feed_purge_interval($link, $feed_id) {
 233
 234                 $result = db_query($link, "SELECT purge_interval, owner_uid FROM ttrss_feeds
 235                         WHERE id = '$feed_id'");
 236
 237                 if (db_num_rows($result) == 1) {
 238                         $purge_interval = db_fetch_result($result, 0, "purge_interval");
 239                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 240
 241                         if ($purge_interval == 0) $purge_interval = get_pref($link,
 242                                 'PURGE_OLD_DAYS', $owner_uid);
 243
 244                         return $purge_interval;
 245
 246                 } else {
 247                         return -1;
 248                 }
 249         }
 250
 251         function purge_orphans($link, $do_output = false) {
 252
 253                 // purge orphaned posts in main content table
 254                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
 255                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
 256
 257                 if ($do_output) {
 258                         $rows = db_affected_rows($link, $result);
 259                         _debug("Purged $rows orphaned posts.");
 260                 }
 261         }
 262
 263         function get_feed_update_interval($link, $feed_id) {
 264                 $result = db_query($link, "SELECT owner_uid, update_interval FROM
 265                         ttrss_feeds WHERE id = '$feed_id'");
 266
 267                 if (db_num_rows($result) == 1) {
 268                         $update_interval = db_fetch_result($result, 0, "update_interval");
 269                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 270
 271                         if ($update_interval != 0) {
 272                                 return $update_interval;
 273                         } else {
 274                                 return get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $owner_uid, false);
 275                         }
 276
 277                 } else {
 278                         return -1;
 279                 }
 280         }
 281
 282         function fetch_file_contents($url, $type = false, $login = false, $pass = false, $post_query = false) {
 283                 $login = urlencode($login);
 284                 $pass = urlencode($pass);
 285
 286                 global $fetch_last_error;
 287
 288                 if (function_exists('curl_init') && !ini_get("open_basedir")) {
 289                         $ch = curl_init($url);
 290
 291                         curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 15);
 292                         curl_setopt($ch, CURLOPT_TIMEOUT, 45);
 293                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
 294                         curl_setopt($ch, CURLOPT_MAXREDIRS, 20);
 295                         curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
 296                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 297                         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 298                         curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 299                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 300                         curl_setopt($ch, CURLOPT_ENCODING , "gzip");
 301
 302                         if ($post_query) {
 303                                 curl_setopt($ch, CURLOPT_POST, true);
 304                                 curl_setopt($ch, CURLOPT_POSTFIELDS, $post_query);
 305                         }
 306
 307                         if ($login && $pass)
 308                                 curl_setopt($ch, CURLOPT_USERPWD, "$login:$pass");
 309
 310                         $contents = @curl_exec($ch);
 311
 312                         if ($contents === false) {
 313                                 $fetch_last_error = curl_error($ch);
 314                                 curl_close($ch);
 315                                 return false;
 316                         }
 317
 318                         $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 319                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 320                         curl_close($ch);
 321
 322                         if ($http_code != 200 || $type && strpos($content_type, "$type") === false) {
 323                                 return false;
 324                         }
 325
 326                         return $contents;
 327                 } else {
 328                         if ($login && $pass ){
 329                                 $url_parts = array();
 330
 331                                 preg_match("/(^[^:]*):\/\/(.*)/", $url, $url_parts);
 332
 333                                 if ($url_parts[1] && $url_parts[2]) {
 334                                         $url = $url_parts[1] . "://$login:$pass@" . $url_parts[2];
 335                                 }
 336                         }
 337
 338                         $data = @file_get_contents($url);
 339
 340                         if (!$data && function_exists('error_get_last')) {
 341                                 $error = error_get_last();
 342                                 $fetch_last_error = $error["message"];
 343                         }
 344                         return $data;
 345                 }
 346
 347         }
 348
 349         /**
 350          * Try to determine the favicon URL for a feed.
 351          * adapted from wordpress favicon plugin by Jeff Minard (http://thecodepro.com/)
 352          * http://dev.wp-plugins.org/file/favatars/trunk/favatars.php
 353          *
 354          * @param string $url A feed or page URL
 355          * @access public
 356          * @return mixed The favicon URL, or false if none was found.
 357          */
 358         function get_favicon_url($url) {
 359
 360                 $favicon_url = false;
 361
 362                 if ($html = @fetch_file_contents($url)) {
 363
 364                         libxml_use_internal_errors(true);
 365
 366                         $doc = new DOMDocument();
 367                         $doc->loadHTML($html);
 368                         $xpath = new DOMXPath($doc);
 369
 370                         $base = $xpath->query('/html/head/base');
 371                         foreach ($base as $b) {
 372                                 $url = $b->getAttribute("href");
 373                                 break;
 374                         }
 375
 376                         $entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon"]');
 377                         if (count($entries) > 0) {
 378                                 foreach ($entries as $entry) {
 379                                         $favicon_url = rewrite_relative_url($url, $entry->getAttribute("href"));
 380                                         break;
 381                                 }
 382                         }
 383                 }
 384
 385                 if (!$favicon_url)
 386                         $favicon_url = rewrite_relative_url($url, "/favicon.ico");
 387
 388                 return $favicon_url;
 389         } // function get_favicon_url
 390
 391         function check_feed_favicon($site_url, $feed, $link) {
 392 #               print "FAVICON [$site_url]: $favicon_url\n";
 393
 394                 $icon_file = ICONS_DIR . "/$feed.ico";
 395
 396                 if (!file_exists($icon_file)) {
 397                         $favicon_url = get_favicon_url($site_url);
 398
 399                         if ($favicon_url) {
 400                                 // Limiting to "image" type misses those served with text/plain
 401                                 $contents = fetch_file_contents($favicon_url); // , "image");
 402
 403                                 if ($contents) {
 404                                         // Crude image type matching.
 405                                         // Patterns gleaned from the file(1) source code.
 406                                         if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
 407                                                 // 0       string  \000\000\001\000        MS Windows icon resource
 408                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
 409                                         }
 410                                         elseif (preg_match('/^GIF8/', $contents)) {
 411                                                 // 0       string          GIF8            GIF image data
 412                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
 413                                         }
 414                                         elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
 415                                                 // 0       string          \x89PNG\x0d\x0a\x1a\x0a         PNG image data
 416                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
 417                                         }
 418                                         elseif (preg_match('/^\xff\xd8/', $contents)) {
 419                                                 // 0       beshort         0xffd8          JPEG image data
 420                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
 421                                         }
 422                                         else {
 423                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
 424                                                 $contents = "";
 425                                         }
 426                                 }
 427
 428                                 if ($contents) {
 429                                         $fp = @fopen($icon_file, "w");
 430
 431                                         if ($fp) {
 432                                                 fwrite($fp, $contents);
 433                                                 fclose($fp);
 434                                                 chmod($icon_file, 0644);
 435                                         }
 436                                 }
 437                         }
 438                 }
 439         }
 440
 441         function print_select($id, $default, $values, $attributes = "") {
 442                 print "<select name=\"$id\" id=\"$id\" $attributes>";
 443                 foreach ($values as $v) {
 444                         if ($v == $default)
 445                                 $sel = "selected=\"1\"";
 446                          else
 447                                 $sel = "";
 448
 449                         print "<option value=\"$v\" $sel>$v</option>";
 450                 }
 451                 print "</select>";
 452         }
 453
 454         function print_select_hash($id, $default, $values, $attributes = "") {
 455                 print "<select name=\"$id\" id='$id' $attributes>";
 456                 foreach (array_keys($values) as $v) {
 457                         if ($v == $default)
 458                                 $sel = 'selected="selected"';
 459                          else
 460                                 $sel = "";
 461
 462                         print "<option $sel value=\"$v\">".$values[$v]."</option>";
 463                 }
 464
 465                 print "</select>";
 466         }
 467
 468         function get_article_filters($filters, $title, $content, $link, $timestamp, $author, $tags) {
 469                 $matches = array();
 470
 471                 if ($filters["title"]) {
 472                         foreach ($filters["title"] as $filter) {
 473                                 $reg_exp = $filter["reg_exp"];
 474                                 $inverse = $filter["inverse"];
 475                                 if ((!$inverse && @preg_match("/$reg_exp/i", $title)) ||
 476                                                 ($inverse && !@preg_match("/$reg_exp/i", $title))) {
 477
 478                                         array_push($matches, array($filter["action"], $filter["action_param"]));
 479                                 }
 480                         }
 481                 }
 482
 483                 if ($filters["content"]) {
 484                         foreach ($filters["content"] as $filter) {
 485                                 $reg_exp = $filter["reg_exp"];
 486                                 $inverse = $filter["inverse"];
 487
 488                                 if ((!$inverse && @preg_match("/$reg_exp/i", $content)) ||
 489                                                 ($inverse && !@preg_match("/$reg_exp/i", $content))) {
 490
 491                                         array_push($matches, array($filter["action"], $filter["action_param"]));
 492                                 }
 493                         }
 494                 }
 495
 496                 if ($filters["both"]) {
 497                         foreach ($filters["both"] as $filter) {
 498                                 $reg_exp = $filter["reg_exp"];
 499                                 $inverse = $filter["inverse"];
 500
 501                                 if ($inverse) {
 502                                         if (!@preg_match("/$reg_exp/i", $title) && !preg_match("/$reg_exp/i", $content)) {
 503                                                 array_push($matches, array($filter["action"], $filter["action_param"]));
 504                                         }
 505                                 } else {
 506                                         if (@preg_match("/$reg_exp/i", $title) || preg_match("/$reg_exp/i", $content)) {
 507                                                 array_push($matches, array($filter["action"], $filter["action_param"]));
 508                                         }
 509                                 }
 510                         }
 511                 }
 512
 513                 if ($filters["link"]) {
 514                         $reg_exp = $filter["reg_exp"];
 515                         foreach ($filters["link"] as $filter) {
 516                                 $reg_exp = $filter["reg_exp"];
 517                                 $inverse = $filter["inverse"];
 518
 519                                 if ((!$inverse && @preg_match("/$reg_exp/i", $link)) ||
 520                                                 ($inverse && !@preg_match("/$reg_exp/i", $link))) {
 521
 522                                         array_push($matches, array($filter["action"], $filter["action_param"]));
 523                                 }
 524                         }
 525                 }
 526
 527                 if ($filters["date"]) {
 528                         $reg_exp = $filter["reg_exp"];
 529                         foreach ($filters["date"] as $filter) {
 530                                 $date_modifier = $filter["filter_param"];
 531                                 $inverse = $filter["inverse"];
 532                                 $check_timestamp = strtotime($filter["reg_exp"]);
 533
 534                                 # no-op when timestamp doesn't parse to prevent misfires
 535
 536                                 if ($check_timestamp) {
 537                                         $match_ok = false;
 538
 539                                         if ($date_modifier == "before" && $timestamp < $check_timestamp ||
 540                                                 $date_modifier == "after" && $timestamp > $check_timestamp) {
 541                                                         $match_ok = true;
 542                                         }
 543
 544                                         if ($inverse) $match_ok = !$match_ok;
 545
 546                                         if ($match_ok) {
 547                                                 array_push($matches, array($filter["action"], $filter["action_param"]));
 548                                         }
 549                                 }
 550                         }
 551                 }
 552
 553                 if ($filters["author"]) {
 554                         foreach ($filters["author"] as $filter) {
 555                                 $reg_exp = $filter["reg_exp"];
 556                                 $inverse = $filter["inverse"];
 557                                 if ((!$inverse && @preg_match("/$reg_exp/i", $author)) ||
 558                                                 ($inverse && !@preg_match("/$reg_exp/i", $author))) {
 559
 560                                         array_push($matches, array($filter["action"], $filter["action_param"]));
 561                                 }
 562                         }
 563                 }
 564
 565                 if ($filters["tag"]) {
 566
 567                         $tag_string = join(",", $tags);
 568
 569                         foreach ($filters["tag"] as $filter) {
 570                                 $reg_exp = $filter["reg_exp"];
 571                                 $inverse = $filter["inverse"];
 572
 573                                 if ((!$inverse && @preg_match("/$reg_exp/i", $tag_string)) ||
 574                                                 ($inverse && !@preg_match("/$reg_exp/i", $tag_string))) {
 575
 576                                         array_push($matches, array($filter["action"], $filter["action_param"]));
 577                                 }
 578                         }
 579                 }
 580
 581
 582                 return $matches;
 583         }
 584
 585         function find_article_filter($filters, $filter_name) {
 586                 foreach ($filters as $f) {
 587                         if ($f[0] == $filter_name) {
 588                                 return $f;
 589                         };
 590                 }
 591                 return false;
 592         }
 593
 594         function calculate_article_score($filters) {
 595                 $score = 0;
 596
 597                 foreach ($filters as $f) {
 598                         if ($f[0] == "score") {
 599                                 $score += $f[1];
 600                         };
 601                 }
 602                 return $score;
 603         }
 604
 605         function assign_article_to_labels($link, $id, $filters, $owner_uid) {
 606                 foreach ($filters as $f) {
 607                         if ($f[0] == "label") {
 608                                 label_add_article($link, $id, $f[1], $owner_uid);
 609                         };
 610                 }
 611         }
 612
 613         function getmicrotime() {
 614                 list($usec, $sec) = explode(" ",microtime());
 615                 return ((float)$usec + (float)$sec);
 616         }
 617
 618         function print_radio($id, $default, $true_is, $values, $attributes = "") {
 619                 foreach ($values as $v) {
 620
 621                         if ($v == $default)
 622                                 $sel = "checked";
 623                          else
 624                                 $sel = "";
 625
 626                         if ($v == $true_is) {
 627                                 $sel .= " value=\"1\"";
 628                         } else {
 629                                 $sel .= " value=\"0\"";
 630                         }
 631
 632                         print "<input class=\"noborder\" dojoType=\"dijit.form.RadioButton\"
 633                                 type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 634
 635                 }
 636         }
 637
 638         function initialize_user_prefs($link, $uid, $profile = false) {
 639
 640                 $uid = db_escape_string($uid);
 641
 642                 if (!$profile) {
 643                         $profile = "NULL";
 644                         $profile_qpart = "AND profile IS NULL";
 645                 } else {
 646                         $profile_qpart = "AND profile = '$profile'";
 647                 }
 648
 649                 if (get_schema_version($link) < 63) $profile_qpart = "";
 650
 651                 db_query($link, "BEGIN");
 652
 653                 $result = db_query($link, "SELECT pref_name,def_value FROM ttrss_prefs");
 654
 655                 $u_result = db_query($link, "SELECT pref_name
 656                         FROM ttrss_user_prefs WHERE owner_uid = '$uid' $profile_qpart");
 657
 658                 $active_prefs = array();
 659
 660                 while ($line = db_fetch_assoc($u_result)) {
 661                         array_push($active_prefs, $line["pref_name"]);
 662                 }
 663
 664                 while ($line = db_fetch_assoc($result)) {
 665                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 666 //                              print "adding " . $line["pref_name"] . "<br>";
 667
 668                                 if (get_schema_version($link) < 63) {
 669                                         db_query($link, "INSERT INTO ttrss_user_prefs
 670                                                 (owner_uid,pref_name,value) VALUES
 671                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 672
 673                                 } else {
 674                                         db_query($link, "INSERT INTO ttrss_user_prefs
 675                                                 (owner_uid,pref_name,value, profile) VALUES
 676                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."', $profile)");
 677                                 }
 678
 679                         }
 680                 }
 681
 682                 db_query($link, "COMMIT");
 683
 684         }
 685
 686         function get_ssl_certificate_id() {
 687                 if ($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"]) {
 688                         return sha1($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"] .
 689                                 $_SERVER["REDIRECT_SSL_CLIENT_V_START"] .
 690                                 $_SERVER["REDIRECT_SSL_CLIENT_V_END"] .
 691                                 $_SERVER["REDIRECT_SSL_CLIENT_S_DN"]);
 692                 }
 693                 return "";
 694         }
 695
 696         function authenticate_user($link, $login, $password, $check_only = false) {
 697
 698                 if (!SINGLE_USER_MODE) {
 699
 700                         $user_id = false;
 701                         $modules = explode(",", AUTH_MODULES);
 702
 703                         foreach ($modules as $module) {
 704                                 $module_class = "auth_$module";
 705                                 if (class_exists($module_class)) {
 706                                         $authenticator = new $module_class($link);
 707
 708                                         $user_id = (int) $authenticator->authenticate($login, $password);
 709
 710                                         if ($user_id) {
 711                                                 $_SESSION["auth_module"] = $module;
 712                                                 break;
 713                                         }
 714
 715                                 } else {
 716                                         print T_sprintf("Fatal: authentication module %s not found.", $module);
 717                                         die;
 718                                 }
 719                         }
 720
 721                         if ($user_id && !$check_only) {
 722                                 $_SESSION["uid"] = $user_id;
 723
 724                                 $result = db_query($link, "SELECT login,access_level,pwd_hash FROM ttrss_users
 725                                         WHERE id = '$user_id'");
 726
 727                                 $_SESSION["name"] = db_fetch_result($result, 0, "login");
 728                                 $_SESSION["access_level"] = db_fetch_result($result, 0, "access_level");
 729                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 730
 731                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 732                                         $_SESSION["uid"]);
 733
 734                                 $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 735                                 $_SESSION["pwd_hash"] = db_fetch_result($result, 0, "pwd_hash");
 736
 737                                 $_SESSION["last_version_check"] = time();
 738
 739                                 initialize_user_prefs($link, $_SESSION["uid"]);
 740
 741                                 return true;
 742                         }
 743
 744                         return false;
 745
 746                 } else {
 747
 748                         $_SESSION["uid"] = 1;
 749                         $_SESSION["name"] = "admin";
 750                         $_SESSION["access_level"] = 10;
 751
 752                         $_SESSION["hide_hello"] = true;
 753                         $_SESSION["hide_logout"] = true;
 754
 755                         $_SESSION["auth_module"] = false;
 756
 757                         if (!$_SESSION["csrf_token"]) {
 758                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 759                         }
 760
 761                         $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 762
 763                         initialize_user_prefs($link, $_SESSION["uid"]);
 764
 765                         return true;
 766                 }
 767         }
 768
 769         function make_password($length = 8) {
 770
 771                 $password = "";
 772                 $possible = "0123456789abcdfghjkmnpqrstvwxyzABCDFGHJKMNPQRSTVWXYZ";
 773
 774         $i = 0;
 775
 776                 while ($i < $length) {
 777                         $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 778
 779                         if (!strstr($password, $char)) {
 780                                 $password .= $char;
 781                                 $i++;
 782                         }
 783                 }
 784                 return $password;
 785         }
 786
 787         // this is called after user is created to initialize default feeds, labels
 788         // or whatever else
 789
 790         // user preferences are checked on every login, not here
 791
 792         function initialize_user($link, $uid) {
 793
 794                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 795                         values ('$uid', 'Tiny Tiny RSS: New Releases',
 796                         'http://tt-rss.org/releases.rss')");
 797
 798                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 799                         values ('$uid', 'Tiny Tiny RSS: Forum',
 800                                 'http://tt-rss.org/forum/rss.php')");
 801         }
 802
 803         function logout_user() {
 804                 session_destroy();
 805                 if (isset($_COOKIE[session_name()])) {
 806                    setcookie(session_name(), '', time()-42000, '/');
 807                 }
 808         }
 809
 810         function validate_csrf($csrf_token) {
 811                 return $csrf_token == $_SESSION['csrf_token'];
 812         }
 813
 814         function validate_session($link) {
 815                 if (SINGLE_USER_MODE) return true;
 816
 817                 $check_ip = $_SESSION['ip_address'];
 818
 819                 switch (SESSION_CHECK_ADDRESS) {
 820                 case 0:
 821                         $check_ip = '';
 822                         break;
 823                 case 1:
 824                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 825                         break;
 826                 case 2:
 827                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.'));
 828                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 829                         break;
 830                 };
 831
 832                 if ($check_ip && strpos($_SERVER['REMOTE_ADDR'], $check_ip) !== 0) {
 833                         $_SESSION["login_error_msg"] =
 834                                 __("Session failed to validate (incorrect IP)");
 835                         return false;
 836                 }
 837
 838                 if ($_SESSION["ref_schema_version"] != get_schema_version($link, true))
 839                         return false;
 840
 841                 if ($_SESSION["uid"]) {
 842
 843                         $result = db_query($link,
 844                                 "SELECT pwd_hash FROM ttrss_users WHERE id = '".$_SESSION["uid"]."'");
 845
 846                         $pwd_hash = db_fetch_result($result, 0, "pwd_hash");
 847
 848                         if ($pwd_hash != $_SESSION["pwd_hash"]) {
 849                                 return false;
 850                         }
 851                 }
 852
 853 /*              if ($_SESSION["cookie_lifetime"] && $_SESSION["uid"]) {
 854
 855                         //print_r($_SESSION);
 856
 857                         if (time() > $_SESSION["cookie_lifetime"]) {
 858                                 return false;
 859                         }
 860                 } */
 861
 862                 return true;
 863         }
 864
 865         function login_sequence($link, $mobile = false) {
 866                 $_SESSION["prefs_cache"] = array();
 867
 868                 if (!SINGLE_USER_MODE) {
 869
 870                         $login_action = $_POST["login_action"];
 871
 872                         # try to authenticate user if called from login form
 873                         if ($login_action == "do_login") {
 874                                 $login = db_escape_string($_POST["login"]);
 875                                 $password = $_POST["password"];
 876                                 $remember_me = $_POST["remember_me"];
 877
 878                                 if (authenticate_user($link, $login, $password)) {
 879                                         $_POST["password"] = "";
 880
 881                                         $_SESSION["language"] = $_POST["language"];
 882                                         $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 883                                         $_SESSION["bw_limit"] = !!$_POST["bw_limit"];
 884
 885                                         if ($_POST["profile"]) {
 886
 887                                                 $profile = db_escape_string($_POST["profile"]);
 888
 889                                                 $result = db_query($link, "SELECT id FROM ttrss_settings_profiles
 890                                                         WHERE id = '$profile' AND owner_uid = " . $_SESSION["uid"]);
 891
 892                                                 if (db_num_rows($result) != 0) {
 893                                                         $_SESSION["profile"] = $profile;
 894                                                         $_SESSION["prefs_cache"] = array();
 895                                                 }
 896                                         }
 897
 898                                         if ($_REQUEST['return']) {
 899                                                 header("Location: " . $_REQUEST['return']);
 900                                         } else {
 901                                                 header("Location: " . $_SERVER["REQUEST_URI"]);
 902                                         }
 903
 904                                         exit;
 905
 906                                         return;
 907                                 } else {
 908                                         $_SESSION["login_error_msg"] = __("Incorrect username or password");
 909                                 }
 910                         }
 911
 912                         if (!$_SESSION["uid"] || !validate_session($link)) {
 913
 914                                 if (AUTH_AUTO_LOGIN && authenticate_user($link, null, null)) {
 915                                     $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 916                                 } else {
 917                                          authenticate_user($link, null, null, true);
 918                                     render_login_form($link, $mobile);
 919                                     exit;
 920                                 }
 921                         } else {
 922                                 /* bump login timestamp */
 923                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 924                                         $_SESSION["uid"]);
 925
 926                                 if ($_SESSION["language"] && SESSION_COOKIE_LIFETIME > 0) {
 927                                         setcookie("ttrss_lang", $_SESSION["language"],
 928                                                 time() + SESSION_COOKIE_LIFETIME);
 929                                 }
 930
 931                                 // try to remove possible duplicates from feed counter cache
 932 //                              ccache_cleanup($link, $_SESSION["uid"]);
 933                         }
 934
 935                 } else {
 936                         return authenticate_user($link, "admin", null);
 937                 }
 938         }
 939
 940         function truncate_string($str, $max_len, $suffix = '&hellip;') {
 941                 if (mb_strlen($str, "utf-8") > $max_len - 3) {
 942                         return mb_substr($str, 0, $max_len, "utf-8") . $suffix;
 943                 } else {
 944                         return $str;
 945                 }
 946         }
 947
 948         function theme_image($link, $filename) {
 949                 if ($link) {
 950                         $theme_path = get_user_theme_path($link);
 951
 952                         if ($theme_path && is_file($theme_path.$filename)) {
 953                                 return $theme_path.$filename;
 954                         } else {
 955                                 return $filename;
 956                         }
 957                 } else {
 958                         return $filename;
 959                 }
 960         }
 961
 962         function get_user_theme($link) {
 963
 964                 if (get_schema_version($link) >= 63 && $_SESSION["uid"]) {
 965                         $theme_name = get_pref($link, "_THEME_ID");
 966                         if (is_dir("themes/$theme_name")) {
 967                                 return $theme_name;
 968                         } else {
 969                                 return '';
 970                         }
 971                 } else {
 972                         return '';
 973                 }
 974
 975         }
 976
 977         function get_user_theme_path($link) {
 978                 $theme_path = '';
 979
 980                 if (get_schema_version($link) >= 63 && $_SESSION["uid"]) {
 981                         $theme_name = get_pref($link, "_THEME_ID");
 982
 983                         if ($theme_name && is_dir("themes/$theme_name")) {
 984                                 $theme_path = "themes/$theme_name/";
 985                         } else {
 986                                 $theme_name = '';
 987                         }
 988                 } else {
 989                         $theme_path = '';
 990                 }
 991
 992                 if ($theme_path) {
 993                         if (is_file("$theme_path/theme.ini")) {
 994                                 $ini = parse_ini_file("$theme_path/theme.ini", true);
 995                                 if ($ini['theme']['version'] >= THEME_VERSION_REQUIRED) {
 996                                         return $theme_path;
 997                                 }
 998                         }
 999                 }
1000                 return '';
1001         }
1002
1003         function get_user_theme_options($link) {
1004                 $t = get_user_theme_path($link);
1005
1006                 if ($t) {
1007                         if (is_file("$t/theme.ini")) {
1008                                 $ini = parse_ini_file("$t/theme.ini", true);
1009                                 if ($ini['theme']['version']) {
1010                                         return $ini['theme']['options'];
1011                                 }
1012                         }
1013                 }
1014                 return '';
1015         }
1016
1017         function print_theme_includes($link) {
1018
1019                 $t = get_user_theme_path($link);
1020                 $time = time();
1021
1022                 if ($t) {
1023                         print "<link rel=\"stylesheet\" type=\"text/css\"
1024                                 href=\"$t/theme.css?$time \">";
1025                         if (file_exists("$t/theme.js")) {
1026                                 print "<script type=\"text/javascript\" src=\"$t/theme.js?$time\">
1027                                         </script>";
1028                         }
1029                 }
1030         }
1031
1032         function get_all_themes() {
1033                 $themes = glob("themes/*");
1034
1035                 asort($themes);
1036
1037                 $rv = array();
1038
1039                 foreach ($themes as $t) {
1040                         if (is_file("$t/theme.ini")) {
1041                                 $ini = parse_ini_file("$t/theme.ini", true);
1042                                 if ($ini['theme']['version'] >= THEME_VERSION_REQUIRED &&
1043                                                         !$ini['theme']['disabled']) {
1044                                         $entry = array();
1045                                         $entry["path"] = $t;
1046                                         $entry["base"] = basename($t);
1047                                         $entry["name"] = $ini['theme']['name'];
1048                                         $entry["version"] = $ini['theme']['version'];
1049                                         $entry["author"] = $ini['theme']['author'];
1050                                         $entry["options"] = $ini['theme']['options'];
1051                                         array_push($rv, $entry);
1052                                 }
1053                         }
1054                 }
1055
1056                 return $rv;
1057         }
1058
1059         function convert_timestamp($timestamp, $source_tz, $dest_tz) {
1060
1061                 try {
1062                         $source_tz = new DateTimeZone($source_tz);
1063                 } catch (Exception $e) {
1064                         $source_tz = new DateTimeZone('UTC');
1065                 }
1066
1067                 try {
1068                         $dest_tz = new DateTimeZone($dest_tz);
1069                 } catch (Exception $e) {
1070                         $dest_tz = new DateTimeZone('UTC');
1071                 }
1072
1073                 $dt = new DateTime(date('Y-m-d H:i:s', $timestamp), $source_tz);
1074                 return $dt->format('U') + $dest_tz->getOffset($dt);
1075         }
1076
1077         function make_local_datetime($link, $timestamp, $long, $owner_uid = false,
1078                                         $no_smart_dt = false) {
1079
1080                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
1081                 if (!$timestamp) $timestamp = '1970-01-01 0:00';
1082
1083                 global $utc_tz;
1084                 global $tz_offset;
1085
1086                 # We store date in UTC internally
1087                 $dt = new DateTime($timestamp, $utc_tz);
1088
1089                 if ($tz_offset == -1) {
1090
1091                         $user_tz_string = get_pref($link, 'USER_TIMEZONE', $owner_uid);
1092
1093                         try {
1094                                 $user_tz = new DateTimeZone($user_tz_string);
1095                         } catch (Exception $e) {
1096                                 $user_tz = $utc_tz;
1097                         }
1098
1099                         $tz_offset = $user_tz->getOffset($dt);
1100                 }
1101
1102                 $user_timestamp = $dt->format('U') + $tz_offset;
1103
1104                 if (!$no_smart_dt) {
1105                         return smart_date_time($link, $user_timestamp,
1106                                 $tz_offset, $owner_uid);
1107                 } else {
1108                         if ($long)
1109                                 $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
1110                         else
1111                                 $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
1112
1113                         return date($format, $user_timestamp);
1114                 }
1115         }
1116
1117         function smart_date_time($link, $timestamp, $tz_offset = 0, $owner_uid = false) {
1118                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
1119
1120                 if (date("Y.m.d", $timestamp) == date("Y.m.d", time() + $tz_offset)) {
1121                         return date("G:i", $timestamp);
1122                 } else if (date("Y", $timestamp) == date("Y", time() + $tz_offset)) {
1123                         $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
1124                         return date($format, $timestamp);
1125                 } else {
1126                         $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
1127                         return date($format, $timestamp);
1128                 }
1129         }
1130
1131         function sql_bool_to_bool($s) {
1132                 if ($s == "t" || $s == "1" || $s == "true") {
1133                         return true;
1134                 } else {
1135                         return false;
1136                 }
1137         }
1138
1139         function bool_to_sql_bool($s) {
1140                 if ($s) {
1141                         return "true";
1142                 } else {
1143                         return "false";
1144                 }
1145         }
1146
1147         // Session caching removed due to causing wrong redirects to upgrade
1148         // script when get_schema_version() is called on an obsolete session
1149         // created on a previous schema version.
1150         function get_schema_version($link, $nocache = false) {
1151                 global $schema_version;
1152
1153                 if (!$schema_version) {
1154                         $result = db_query($link, "SELECT schema_version FROM ttrss_version");
1155                         $version = db_fetch_result($result, 0, "schema_version");
1156                         $schema_version = $version;
1157                         return $version;
1158                 } else {
1159                         return $schema_version;
1160                 }
1161         }
1162
1163         function sanity_check($link) {
1164                 require_once 'errors.php';
1165
1166                 $error_code = 0;
1167                 $schema_version = get_schema_version($link, true);
1168
1169                 if ($schema_version != SCHEMA_VERSION) {
1170                         $error_code = 5;
1171                 }
1172
1173                 if (DB_TYPE == "mysql") {
1174                         $result = db_query($link, "SELECT true", false);
1175                         if (db_num_rows($result) != 1) {
1176                                 $error_code = 10;
1177                         }
1178                 }
1179
1180                 if (db_escape_string("testTEST") != "testTEST") {
1181                         $error_code = 12;
1182                 }
1183
1184                 return array("code" => $error_code, "message" => $ERRORS[$error_code]);
1185         }
1186
1187         function file_is_locked($filename) {
1188                 if (function_exists('flock')) {
1189                         $fp = @fopen(LOCK_DIRECTORY . "/$filename", "r");
1190                         if ($fp) {
1191                                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1192                                         flock($fp, LOCK_UN);
1193                                         fclose($fp);
1194                                         return false;
1195                                 }
1196                                 fclose($fp);
1197                                 return true;
1198                         } else {
1199                                 return false;
1200                         }
1201                 }
1202                 return true; // consider the file always locked and skip the test
1203         }
1204
1205         function make_lockfile($filename) {
1206                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
1207
1208                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1209                         if (function_exists('posix_getpid')) {
1210                                 fwrite($fp, posix_getpid() . "\n");
1211                         }
1212                         return $fp;
1213                 } else {
1214                         return false;
1215                 }
1216         }
1217
1218         function make_stampfile($filename) {
1219                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
1220
1221                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1222                         fwrite($fp, time() . "\n");
1223                         flock($fp, LOCK_UN);
1224                         fclose($fp);
1225                         return true;
1226                 } else {
1227                         return false;
1228                 }
1229         }
1230
1231         function sql_random_function() {
1232                 if (DB_TYPE == "mysql") {
1233                         return "RAND()";
1234                 } else {
1235                         return "RANDOM()";
1236                 }
1237         }
1238
1239         function catchup_feed($link, $feed, $cat_view, $owner_uid = false, $max_id = false) {
1240
1241                         if (!$owner_uid) $owner_uid = $_SESSION['uid'];
1242
1243                         //if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
1244
1245                         $ref_check_qpart = ($max_id &&
1246                                 !get_pref($link, 'REVERSE_HEADLINES')) ? "ref_id <= '$max_id'" : "true";
1247
1248                         if (is_numeric($feed)) {
1249                                 if ($cat_view) {
1250
1251                                         if ($feed >= 0) {
1252
1253                                                 if ($feed > 0) {
1254                                                         $cat_qpart = "cat_id = '$feed'";
1255                                                 } else {
1256                                                         $cat_qpart = "cat_id IS NULL";
1257                                                 }
1258
1259                                                 $tmp_result = db_query($link, "SELECT id
1260                                                         FROM ttrss_feeds WHERE $cat_qpart AND owner_uid = $owner_uid");
1261
1262                                                 while ($tmp_line = db_fetch_assoc($tmp_result)) {
1263
1264                                                         $tmp_feed = $tmp_line["id"];
1265
1266                                                         db_query($link, "UPDATE ttrss_user_entries
1267                                                                 SET unread = false,last_read = NOW()
1268                                                                 WHERE feed_id = '$tmp_feed'
1269                                                                 AND $ref_check_qpart
1270                                                                 AND owner_uid = $owner_uid");
1271                                                 }
1272                                         } else if ($feed == -2) {
1273
1274                                                 db_query($link, "UPDATE ttrss_user_entries
1275                                                         SET unread = false,last_read = NOW() WHERE (SELECT COUNT(*)
1276                                                                 FROM ttrss_user_labels2 WHERE article_id = ref_id) > 0
1277                                                                 AND $ref_check_qpart
1278                                                                 AND unread = true AND owner_uid = $owner_uid");
1279                                         }
1280
1281                                 } else if ($feed > 0) {
1282
1283                                         db_query($link, "UPDATE ttrss_user_entries
1284                                                         SET unread = false,last_read = NOW()
1285                                                         WHERE feed_id = '$feed'
1286                                                         AND $ref_check_qpart
1287                                                         AND owner_uid = $owner_uid");
1288
1289                                 } else if ($feed < 0 && $feed > -10) { // special, like starred
1290
1291                                         if ($feed == -1) {
1292                                                 db_query($link, "UPDATE ttrss_user_entries
1293                                                         SET unread = false,last_read = NOW()
1294                                                         WHERE marked = true
1295                                                         AND $ref_check_qpart
1296                                                         AND owner_uid = $owner_uid");
1297                                         }
1298
1299                                         if ($feed == -2) {
1300                                                 db_query($link, "UPDATE ttrss_user_entries
1301                                                         SET unread = false,last_read = NOW()
1302                                                         WHERE published = true
1303                                                         AND $ref_check_qpart
1304                                                         AND owner_uid = $owner_uid");
1305                                         }
1306
1307                                         if ($feed == -3) {
1308
1309                                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE");
1310
1311                                                 if (DB_TYPE == "pgsql") {
1312                                                         $match_part = "updated > NOW() - INTERVAL '$intl hour' ";
1313                                                 } else {
1314                                                         $match_part = "updated > DATE_SUB(NOW(),
1315                                                                 INTERVAL $intl HOUR) ";
1316                                                 }
1317
1318                                                 $result = db_query($link, "SELECT id FROM ttrss_entries,
1319                                                         ttrss_user_entries WHERE $match_part AND
1320                                                         unread = true AND
1321                                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
1322                                                         owner_uid = $owner_uid");
1323
1324                                                 $affected_ids = array();
1325
1326                                                 while ($line = db_fetch_assoc($result)) {
1327                                                         array_push($affected_ids, $line["id"]);
1328                                                 }
1329
1330                                                 catchupArticlesById($link, $affected_ids, 0);
1331                                         }
1332
1333                                         if ($feed == -4) {
1334                                                 db_query($link, "UPDATE ttrss_user_entries
1335                                                         SET unread = false,last_read = NOW()
1336                                                         WHERE $ref_check_qpart AND owner_uid = $owner_uid");
1337                                         }
1338
1339                                 } else if ($feed < -10) { // label
1340
1341                                         $label_id = -$feed - 11;
1342
1343                                         db_query($link, "UPDATE ttrss_user_entries, ttrss_user_labels2
1344                                                 SET unread = false, last_read = NOW()
1345                                                         WHERE label_id = '$label_id' AND unread = true
1346                                                         AND $ref_check_qpart
1347                                                         AND owner_uid = '$owner_uid' AND ref_id = article_id");
1348
1349                                 }
1350
1351                                 ccache_update($link, $feed, $owner_uid, $cat_view);
1352
1353                         } else { // tag
1354                                 db_query($link, "BEGIN");
1355
1356                                 $tag_name = db_escape_string($feed);
1357
1358                                 $result = db_query($link, "SELECT post_int_id FROM ttrss_tags
1359                                         WHERE tag_name = '$tag_name' AND owner_uid = $owner_uid");
1360
1361                                 while ($line = db_fetch_assoc($result)) {
1362                                         db_query($link, "UPDATE ttrss_user_entries SET
1363                                                 unread = false, last_read = NOW()
1364                                                 WHERE $ref_check_qpart AND int_id = " . $line["post_int_id"]);
1365                                 }
1366                                 db_query($link, "COMMIT");
1367                         }
1368         }
1369
1370         function getAllCounters($link, $omode = "flc", $active_feed = false) {
1371
1372                 if (!$omode) $omode = "flc";
1373
1374                 $data = getGlobalCounters($link);
1375
1376                 $data = array_merge($data, getVirtCounters($link));
1377
1378                 if (strchr($omode, "l")) $data = array_merge($data, getLabelCounters($link));
1379                 if (strchr($omode, "f")) $data = array_merge($data, getFeedCounters($link, $active_feed));
1380                 if (strchr($omode, "t")) $data = array_merge($data, getTagCounters($link));
1381                 if (strchr($omode, "c")) $data = array_merge($data, getCategoryCounters($link));
1382
1383                 return $data;
1384         }
1385
1386         function getCategoryTitle($link, $cat_id) {
1387
1388                 if ($cat_id == -1) {
1389                         return __("Special");
1390                 } else if ($cat_id == -2) {
1391                         return __("Labels");
1392                 } else {
1393
1394                         $result = db_query($link, "SELECT title FROM ttrss_feed_categories WHERE
1395                                 id = '$cat_id'");
1396
1397                         if (db_num_rows($result) == 1) {
1398                                 return db_fetch_result($result, 0, "title");
1399                         } else {
1400                                 return "Uncategorized";
1401                         }
1402                 }
1403         }
1404
1405
1406         function getCategoryCounters($link) {
1407                 $ret_arr = array();
1408
1409                 /* Labels category */
1410
1411                 $cv = array("id" => -2, "kind" => "cat",
1412                         "counter" => getCategoryUnread($link, -2));
1413
1414                 array_push($ret_arr, $cv);
1415
1416                 $result = db_query($link, "SELECT id AS cat_id, value AS unread,
1417                         (SELECT COUNT(id) FROM ttrss_feed_categories AS c2
1418                                 WHERE c2.parent_cat = ttrss_feed_categories.id) AS num_children
1419                         FROM ttrss_feed_categories, ttrss_cat_counters_cache
1420                         WHERE ttrss_cat_counters_cache.feed_id = id AND
1421                         ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid AND
1422                         ttrss_feed_categories.owner_uid = " . $_SESSION["uid"]);
1423
1424                 while ($line = db_fetch_assoc($result)) {
1425                         $line["cat_id"] = (int) $line["cat_id"];
1426
1427                         if ($line["num_children"] > 0) {
1428                                 $child_counter = getCategoryChildrenUnread($link, $line["cat_id"], $_SESSION["uid"]);
1429                         } else {
1430                                 $child_counter = 0;
1431                         }
1432
1433                         $cv = array("id" => $line["cat_id"], "kind" => "cat",
1434                                 "child_counter" => $child_counter,
1435                                 "counter" => $line["unread"]);
1436
1437                         array_push($ret_arr, $cv);
1438                 }
1439
1440                 /* Special case: NULL category doesn't actually exist in the DB */
1441
1442                 $cv = array("id" => 0, "kind" => "cat",
1443                         "counter" => ccache_find($link, 0, $_SESSION["uid"], true));
1444
1445                 array_push($ret_arr, $cv);
1446
1447                 return $ret_arr;
1448         }
1449
1450         // only accepts real cats (>= 0)
1451         function getCategoryChildrenUnread($link, $cat, $owner_uid = false) {
1452                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1453
1454                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories WHERE parent_cat = '$cat'
1455                                 AND owner_uid = $owner_uid");
1456
1457                 $unread = 0;
1458
1459                 while ($line = db_fetch_assoc($result)) {
1460                         $unread += getCategoryUnread($link, $line["id"], $owner_uid);
1461                         $unread += getCategoryChildrenUnread($link, $line["id"], $owner_uid);
1462                 }
1463
1464                 return $unread;
1465         }
1466
1467         function getCategoryUnread($link, $cat, $owner_uid = false) {
1468
1469                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1470
1471                 if ($cat >= 0) {
1472
1473                         if ($cat != 0) {
1474                                 $cat_query = "cat_id = '$cat'";
1475                         } else {
1476                                 $cat_query = "cat_id IS NULL";
1477                         }
1478
1479                         $result = db_query($link, "SELECT id FROM ttrss_feeds WHERE $cat_query
1480                                         AND owner_uid = " . $owner_uid);
1481
1482                         $cat_feeds = array();
1483                         while ($line = db_fetch_assoc($result)) {
1484                                 array_push($cat_feeds, "feed_id = " . $line["id"]);
1485                         }
1486
1487                         if (count($cat_feeds) == 0) return 0;
1488
1489                         $match_part = implode(" OR ", $cat_feeds);
1490
1491                         $result = db_query($link, "SELECT COUNT(int_id) AS unread
1492                                 FROM ttrss_user_entries
1493                                 WHERE   unread = true AND ($match_part)
1494                                 AND owner_uid = " . $owner_uid);
1495
1496                         $unread = 0;
1497
1498                         # this needs to be rewritten
1499                         while ($line = db_fetch_assoc($result)) {
1500                                 $unread += $line["unread"];
1501                         }
1502
1503                         return $unread;
1504                 } else if ($cat == -1) {
1505                         return getFeedUnread($link, -1) + getFeedUnread($link, -2) + getFeedUnread($link, -3) + getFeedUnread($link, 0);
1506                 } else if ($cat == -2) {
1507
1508                         $result = db_query($link, "
1509                                 SELECT COUNT(unread) AS unread FROM
1510                                         ttrss_user_entries, ttrss_user_labels2
1511                                 WHERE article_id = ref_id AND unread = true
1512                                         AND ttrss_user_entries.owner_uid = '$owner_uid'");
1513
1514                         $unread = db_fetch_result($result, 0, "unread");
1515
1516                         return $unread;
1517
1518                 }
1519         }
1520
1521         function getFeedUnread($link, $feed, $is_cat = false) {
1522                 return getFeedArticles($link, $feed, $is_cat, true, $_SESSION["uid"]);
1523         }
1524
1525         function getLabelUnread($link, $label_id, $owner_uid = false) {
1526                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1527
1528                 $result = db_query($link, "SELECT COUNT(ref_id) AS unread FROM ttrss_user_entries, ttrss_user_labels2
1529                         WHERE owner_uid = '$owner_uid' AND unread = true AND label_id = '$label_id' AND article_id = ref_id");
1530
1531                 if (db_num_rows($result) != 0) {
1532                         return db_fetch_result($result, 0, "unread");
1533                 } else {
1534                         return 0;
1535                 }
1536         }
1537
1538         function getFeedArticles($link, $feed, $is_cat = false, $unread_only = false,
1539                 $owner_uid = false) {
1540
1541                 $n_feed = (int) $feed;
1542                 $need_entries = false;
1543
1544                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1545
1546                 if ($unread_only) {
1547                         $unread_qpart = "unread = true";
1548                 } else {
1549                         $unread_qpart = "true";
1550                 }
1551
1552                 if ($is_cat) {
1553                         return getCategoryUnread($link, $n_feed, $owner_uid);
1554                 } if ($feed != "0" && $n_feed == 0) {
1555
1556                         $feed = db_escape_string($feed);
1557
1558                         $result = db_query($link, "SELECT SUM((SELECT COUNT(int_id)
1559                                 FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1560                                         AND ref_id = id AND $unread_qpart)) AS count FROM ttrss_tags
1561                                 WHERE owner_uid = $owner_uid AND tag_name = '$feed'");
1562                         return db_fetch_result($result, 0, "count");
1563
1564                 } else if ($n_feed == -1) {
1565                         $match_part = "marked = true";
1566                 } else if ($n_feed == -2) {
1567                         $match_part = "published = true";
1568                 } else if ($n_feed == -3) {
1569                         $match_part = "unread = true AND score >= 0";
1570
1571                         $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
1572
1573                         if (DB_TYPE == "pgsql") {
1574                                 $match_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
1575                         } else {
1576                                 $match_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
1577                         }
1578
1579                         $need_entries = true;
1580
1581                 } else if ($n_feed == -4) {
1582                         $match_part = "true";
1583                 } else if ($n_feed >= 0) {
1584
1585                         if ($n_feed != 0) {
1586                                 $match_part = "feed_id = '$n_feed'";
1587                         } else {
1588                                 $match_part = "feed_id IS NULL";
1589                         }
1590
1591                 } else if ($feed < -10) {
1592
1593                         $label_id = -$feed - 11;
1594
1595                         return getLabelUnread($link, $label_id, $owner_uid);
1596
1597                 }
1598
1599                 if ($match_part) {
1600
1601                         if ($need_entries) {
1602                                 $from_qpart = "ttrss_user_entries,ttrss_entries";
1603                                 $from_where = "ttrss_entries.id = ttrss_user_entries.ref_id AND";
1604                         } else {
1605                                 $from_qpart = "ttrss_user_entries";
1606                         }
1607
1608                         $query = "SELECT count(int_id) AS unread
1609                                 FROM $from_qpart WHERE
1610                                 $unread_qpart AND $from_where ($match_part) AND ttrss_user_entries.owner_uid = $owner_uid";
1611
1612                         //echo "[$feed/$query]\n";
1613
1614                         $result = db_query($link, $query);
1615
1616                 } else {
1617
1618                         $result = db_query($link, "SELECT COUNT(post_int_id) AS unread
1619                                 FROM ttrss_tags,ttrss_user_entries,ttrss_entries
1620                                 WHERE tag_name = '$feed' AND post_int_id = int_id AND ref_id = ttrss_entries.id
1621                                 AND $unread_qpart AND ttrss_tags.owner_uid = " . $owner_uid);
1622                 }
1623
1624                 $unread = db_fetch_result($result, 0, "unread");
1625
1626                 return $unread;
1627         }
1628
1629         function getGlobalUnread($link, $user_id = false) {
1630
1631                 if (!$user_id) {
1632                         $user_id = $_SESSION["uid"];
1633                 }
1634
1635                 $result = db_query($link, "SELECT SUM(value) AS c_id FROM ttrss_counters_cache
1636                         WHERE owner_uid = '$user_id' AND feed_id > 0");
1637
1638                 $c_id = db_fetch_result($result, 0, "c_id");
1639
1640                 return $c_id;
1641         }
1642
1643         function getGlobalCounters($link, $global_unread = -1) {
1644                 $ret_arr = array();
1645
1646                 if ($global_unread == -1) {
1647                         $global_unread = getGlobalUnread($link);
1648                 }
1649
1650                 $cv = array("id" => "global-unread",
1651                         "counter" => $global_unread);
1652
1653                 array_push($ret_arr, $cv);
1654
1655                 $result = db_query($link, "SELECT COUNT(id) AS fn FROM
1656                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1657
1658                 $subscribed_feeds = db_fetch_result($result, 0, "fn");
1659
1660                 $cv = array("id" => "subscribed-feeds",
1661                         "counter" => $subscribed_feeds);
1662
1663                 array_push($ret_arr, $cv);
1664
1665                 return $ret_arr;
1666         }
1667
1668         function getTagCounters($link) {
1669
1670                 $ret_arr = array();
1671
1672                 $result = db_query($link, "SELECT tag_name,SUM((SELECT COUNT(int_id)
1673                         FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1674                                 AND ref_id = id AND unread = true)) AS count FROM ttrss_tags
1675                                 WHERE owner_uid = ".$_SESSION['uid']." GROUP BY tag_name
1676                                 ORDER BY count DESC LIMIT 55");
1677
1678                 $tags = array();
1679
1680                 while ($line = db_fetch_assoc($result)) {
1681                         $tags[$line["tag_name"]] += $line["count"];
1682                 }
1683
1684                 foreach (array_keys($tags) as $tag) {
1685                         $unread = $tags[$tag];
1686                         $tag = htmlspecialchars($tag);
1687
1688                         $cv = array("id" => $tag,
1689                                 "kind" => "tag",
1690                                 "counter" => $unread);
1691
1692                         array_push($ret_arr, $cv);
1693                 }
1694
1695                 return $ret_arr;
1696         }
1697
1698         function getVirtCounters($link) {
1699
1700                 $ret_arr = array();
1701
1702                 for ($i = 0; $i >= -4; $i--) {
1703
1704                         $count = getFeedUnread($link, $i);
1705
1706                         $cv = array("id" => $i,
1707                                 "counter" => $count);
1708
1709 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1710 //                              $cv["xmsg"] = getFeedArticles($link, $i)." ".__("total");
1711
1712                         array_push($ret_arr, $cv);
1713                 }
1714
1715                 return $ret_arr;
1716         }
1717
1718         function getLabelCounters($link, $descriptions = false) {
1719
1720                 $ret_arr = array();
1721
1722                 $owner_uid = $_SESSION["uid"];
1723
1724                 $result = db_query($link, "SELECT id, caption FROM ttrss_labels2
1725                         WHERE owner_uid = '$owner_uid'");
1726
1727                 while ($line = db_fetch_assoc($result)) {
1728
1729                         $id = -$line["id"] - 11;
1730
1731                         $label_name = $line["caption"];
1732                         $count = getFeedUnread($link, $id);
1733
1734                         $cv = array("id" => $id,
1735                                 "counter" => $count);
1736
1737                         if ($descriptions)
1738                                 $cv["description"] = $label_name;
1739
1740 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1741 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1742
1743                         array_push($ret_arr, $cv);
1744                 }
1745
1746                 return $ret_arr;
1747         }
1748
1749         function getFeedCounters($link, $active_feed = false) {
1750
1751                 $ret_arr = array();
1752
1753                 $query = "SELECT ttrss_feeds.id,
1754                                 ttrss_feeds.title,
1755                                 ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
1756                                 last_error, value AS count
1757                         FROM ttrss_feeds, ttrss_counters_cache
1758                         WHERE ttrss_feeds.owner_uid = ".$_SESSION["uid"]."
1759                                 AND ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid
1760                                 AND ttrss_counters_cache.feed_id = id";
1761
1762                 $result = db_query($link, $query);
1763                 $fctrs_modified = false;
1764
1765                 while ($line = db_fetch_assoc($result)) {
1766
1767                         $id = $line["id"];
1768                         $count = $line["count"];
1769                         $last_error = htmlspecialchars($line["last_error"]);
1770
1771                         $last_updated = make_local_datetime($link, $line['last_updated'], false);
1772
1773                         $has_img = feed_has_icon($id);
1774
1775                         if (date('Y') - date('Y', strtotime($line['last_updated'])) > 2)
1776                                 $last_updated = '';
1777
1778                         $cv = array("id" => $id,
1779                                 "updated" => $last_updated,
1780                                 "counter" => $count,
1781                                 "has_img" => (int) $has_img);
1782
1783                         if ($last_error)
1784                                 $cv["error"] = $last_error;
1785
1786 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1787 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1788
1789                         if ($active_feed && $id == $active_feed)
1790                                 $cv["title"] = truncate_string($line["title"], 30);
1791
1792                         array_push($ret_arr, $cv);
1793
1794                 }
1795
1796                 return $ret_arr;
1797         }
1798
1799         function get_pgsql_version($link) {
1800                 $result = db_query($link, "SELECT version() AS version");
1801                 $version = explode(" ", db_fetch_result($result, 0, "version"));
1802                 return $version[1];
1803         }
1804
1805         /**
1806          * @return array (code => Status code, message => error message if available)
1807          *
1808          *                 0 - OK, Feed already exists
1809          *                 1 - OK, Feed added
1810          *                 2 - Invalid URL
1811          *                 3 - URL content is HTML, no feeds available
1812          *                 4 - URL content is HTML which contains multiple feeds.
1813          *                     Here you should call extractfeedurls in rpc-backend
1814          *                     to get all possible feeds.
1815          *                 5 - Couldn't download the URL content.
1816          */
1817         function subscribe_to_feed($link, $url, $cat_id = 0,
1818                         $auth_login = '', $auth_pass = '', $need_auth = false) {
1819
1820                 global $fetch_last_error;
1821
1822                 require_once "include/rssfuncs.php";
1823
1824                 $url = fix_url($url);
1825
1826                 if (!$url || !validate_feed_url($url)) return array("code" => 2);
1827
1828                 $update_method = 0;
1829
1830                 $result = db_query($link, "SELECT twitter_oauth FROM ttrss_users
1831                         WHERE id = ".$_SESSION['uid']);
1832
1833                 $has_oauth = db_fetch_result($result, 0, 'twitter_oauth');
1834
1835                 if (!$need_auth || !$has_oauth || strpos($url, '://api.twitter.com') === false) {
1836                         if (!fetch_file_contents($url, false, $auth_login, $auth_pass))
1837                                 return array("code" => 5, "message" => $fetch_last_error);
1838
1839                         if (url_is_html($url, $auth_login, $auth_pass)) {
1840                                 $feedUrls = get_feeds_from_html($url, $auth_login, $auth_pass);
1841                                 if (count($feedUrls) == 0) {
1842                                         return array("code" => 3);
1843                                 } else if (count($feedUrls) > 1) {
1844                                         return array("code" => 4);
1845                                 }
1846                                 //use feed url as new URL
1847                                 $url = key($feedUrls);
1848                         }
1849
1850                         } else {
1851                                 if (!fetch_twitter_rss($link, $url, $_SESSION['uid']))
1852                                         return array("code" => 5);
1853
1854                                 $update_method = 3;
1855                         }
1856                 if ($cat_id == "0" || !$cat_id) {
1857                         $cat_qpart = "NULL";
1858                 } else {
1859                         $cat_qpart = "'$cat_id'";
1860                 }
1861
1862                 $result = db_query($link,
1863                         "SELECT id FROM ttrss_feeds
1864                         WHERE feed_url = '$url' AND owner_uid = ".$_SESSION["uid"]);
1865
1866                 if (db_num_rows($result) == 0) {
1867                         $result = db_query($link,
1868                                 "INSERT INTO ttrss_feeds
1869                                         (owner_uid,feed_url,title,cat_id, auth_login,auth_pass,update_method)
1870                                 VALUES ('".$_SESSION["uid"]."', '$url',
1871                                 '[Unknown]', $cat_qpart, '$auth_login', '$auth_pass', '$update_method')");
1872
1873                         $result = db_query($link,
1874                                 "SELECT id FROM ttrss_feeds WHERE feed_url = '$url'
1875                                         AND owner_uid = " . $_SESSION["uid"]);
1876
1877                         $feed_id = db_fetch_result($result, 0, "id");
1878
1879                         if ($feed_id) {
1880                                 update_rss_feed($link, $feed_id, true);
1881                         }
1882
1883                         return array("code" => 1);
1884                 } else {
1885                         return array("code" => 0);
1886                 }
1887         }
1888
1889         function print_feed_select($link, $id, $default_id = "",
1890                 $attributes = "", $include_all_feeds = true) {
1891
1892                 print "<select id=\"$id\" name=\"$id\" $attributes>";
1893                 if ($include_all_feeds) {
1894                         print "<option value=\"0\">".__('All feeds')."</option>";
1895                 }
1896
1897                 $result = db_query($link, "SELECT id,title FROM ttrss_feeds
1898                         WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
1899
1900                 if (db_num_rows($result) > 0 && $include_all_feeds) {
1901                         print "<option disabled>--------</option>";
1902                 }
1903
1904                 while ($line = db_fetch_assoc($result)) {
1905                         if ($line["id"] == $default_id) {
1906                                 $is_selected = "selected=\"1\"";
1907                         } else {
1908                                 $is_selected = "";
1909                         }
1910
1911                         $title = truncate_string(htmlspecialchars($line["title"]), 40);
1912
1913                         printf("<option $is_selected value='%d'>%s</option>",
1914                                 $line["id"], $title);
1915                 }
1916
1917                 print "</select>";
1918         }
1919
1920         function print_feed_cat_select($link, $id, $default_id,
1921                 $attributes, $include_all_cats = true, $root_id = false, $nest_level = 0) {
1922
1923                         if (!$root_id) {
1924                                         print "<select id=\"$id\" name=\"$id\" default=\"$default_id\" onchange=\"catSelectOnChange(this)\" $attributes>";
1925                         }
1926
1927                         if ($root_id)
1928                                 $parent_qpart = "parent_cat = '$root_id'";
1929                         else
1930                                 $parent_qpart = "parent_cat IS NULL";
1931
1932                         $result = db_query($link, "SELECT id,title,
1933                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1934                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1935                                 FROM ttrss_feed_categories
1936                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1937
1938                         while ($line = db_fetch_assoc($result)) {
1939                                 if ($line["id"] == $default_id) {
1940                                         $is_selected = "selected=\"1\"";
1941                                 } else {
1942                                         $is_selected = "";
1943                                 }
1944
1945                                 for ($i = 0; $i < $nest_level; $i++)
1946                                         $line["title"] = " - " . $line["title"];
1947
1948                                 if ($line["title"])
1949                                         printf("<option $is_selected value='%d'>%s</option>",
1950                                                 $line["id"], htmlspecialchars($line["title"]));
1951
1952                                 if ($line["num_children"] > 0)
1953                                         print_feed_cat_select($link, $id, $default_id, $attributes,
1954                                                 $include_all_cats, $line["id"], $nest_level+1);
1955                         }
1956
1957                         if (!$root_id) {
1958                                 if ($include_all_cats) {
1959                                         if (db_num_rows($result) > 0) {
1960                                                 print "<option disabled=\"1\">--------</option>";
1961                                         }
1962
1963                                         if ($default_id == 0) {
1964                                                 $is_selected = "selected=\"1\"";
1965                                         } else {
1966                                                 $is_selected = "";
1967                                         }
1968
1969                                         print "<option $is_selected value=\"0\">".__('Uncategorized')."</option>";
1970                                 }
1971                                 print "</select>";
1972                         }
1973                 }
1974
1975         function checkbox_to_sql_bool($val) {
1976                 return ($val == "on") ? "true" : "false";
1977         }
1978
1979         function getFeedCatTitle($link, $id) {
1980                 if ($id == -1) {
1981                         return __("Special");
1982                 } else if ($id < -10) {
1983                         return __("Labels");
1984                 } else if ($id > 0) {
1985                         $result = db_query($link, "SELECT ttrss_feed_categories.title
1986                                 FROM ttrss_feeds, ttrss_feed_categories WHERE ttrss_feeds.id = '$id' AND
1987                                         cat_id = ttrss_feed_categories.id");
1988                         if (db_num_rows($result) == 1) {
1989                                 return db_fetch_result($result, 0, "title");
1990                         } else {
1991                                 return __("Uncategorized");
1992                         }
1993                 } else {
1994                         return "getFeedCatTitle($id) failed";
1995                 }
1996
1997         }
1998
1999         function getFeedIcon($id) {
2000                 switch ($id) {
2001                 case 0:
2002                         return "images/archive.png";
2003                         break;
2004                 case -1:
2005                         return "images/mark_set.png";
2006                         break;
2007                 case -2:
2008                         return "images/pub_set.png";
2009                         break;
2010                 case -3:
2011                         return "images/fresh.png";
2012                         break;
2013                 case -4:
2014                         return "images/tag.png";
2015                         break;
2016                 default:
2017                         if ($id < -10) {
2018                                 return "images/label.png";
2019                         } else {
2020                                 if (file_exists(ICONS_DIR . "/$id.ico"))
2021                                         return ICONS_URL . "/$id.ico";
2022                         }
2023                         break;
2024                 }
2025         }
2026
2027         function getFeedTitle($link, $id) {
2028                 if ($id == -1) {
2029                         return __("Starred articles");
2030                 } else if ($id == -2) {
2031                         return __("Published articles");
2032                 } else if ($id == -3) {
2033                         return __("Fresh articles");
2034                 } else if ($id == -4) {
2035                         return __("All articles");
2036                 } else if ($id === 0 || $id === "0") {
2037                         return __("Archived articles");
2038                 } else if ($id < -10) {
2039                         $label_id = -$id - 11;
2040                         $result = db_query($link, "SELECT caption FROM ttrss_labels2 WHERE id = '$label_id'");
2041                         if (db_num_rows($result) == 1) {
2042                                 return db_fetch_result($result, 0, "caption");
2043                         } else {
2044                                 return "Unknown label ($label_id)";
2045                         }
2046
2047                 } else if (is_numeric($id) && $id > 0) {
2048                         $result = db_query($link, "SELECT title FROM ttrss_feeds WHERE id = '$id'");
2049                         if (db_num_rows($result) == 1) {
2050                                 return db_fetch_result($result, 0, "title");
2051                         } else {
2052                                 return "Unknown feed ($id)";
2053                         }
2054                 } else {
2055                         return $id;
2056                 }
2057         }
2058
2059         function make_init_params($link) {
2060                 $params = array();
2061
2062                 $params["theme"] = get_user_theme($link);
2063                 $params["theme_options"] = get_user_theme_options($link);
2064
2065                 $params["sign_progress"] = theme_image($link, "images/indicator_white.gif");
2066                 $params["sign_progress_tiny"] = theme_image($link, "images/indicator_tiny.gif");
2067                 $params["sign_excl"] = theme_image($link, "images/sign_excl.png");
2068                 $params["sign_info"] = theme_image($link, "images/sign_info.png");
2069
2070                 foreach (array("ON_CATCHUP_SHOW_NEXT_FEED", "HIDE_READ_FEEDS",
2071                         "ENABLE_FEED_CATS", "FEEDS_SORT_BY_UNREAD", "CONFIRM_FEED_CATCHUP",
2072                         "CDM_AUTO_CATCHUP", "FRESH_ARTICLE_MAX_AGE", "DEFAULT_ARTICLE_LIMIT",
2073                         "HIDE_READ_SHOWS_SPECIAL", "COMBINED_DISPLAY_MODE") as $param) {
2074
2075                                  $params[strtolower($param)] = (int) get_pref($link, $param);
2076                  }
2077
2078                 $params["icons_url"] = ICONS_URL;
2079                 $params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
2080                 $params["default_include_children"] = get_pref($link, "_DEFAULT_INCLUDE_CHILDREN");
2081                 $params["default_view_mode"] = get_pref($link, "_DEFAULT_VIEW_MODE");
2082                 $params["default_view_limit"] = (int) get_pref($link, "_DEFAULT_VIEW_LIMIT");
2083                 $params["default_view_order_by"] = get_pref($link, "_DEFAULT_VIEW_ORDER_BY");
2084                 $params["bw_limit"] = (int) $_SESSION["bw_limit"];
2085
2086                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2087                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2088
2089                 $max_feed_id = db_fetch_result($result, 0, "mid");
2090                 $num_feeds = db_fetch_result($result, 0, "nf");
2091
2092                 $params["max_feed_id"] = (int) $max_feed_id;
2093                 $params["num_feeds"] = (int) $num_feeds;
2094
2095                 $params["collapsed_feedlist"] = (int) get_pref($link, "_COLLAPSED_FEEDLIST");
2096
2097                 $params["csrf_token"] = $_SESSION["csrf_token"];
2098
2099                 return $params;
2100         }
2101
2102         function make_runtime_info($link) {
2103                 $data = array();
2104
2105                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2106                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2107
2108                 $max_feed_id = db_fetch_result($result, 0, "mid");
2109                 $num_feeds = db_fetch_result($result, 0, "nf");
2110
2111                 $data["max_feed_id"] = (int) $max_feed_id;
2112                 $data["num_feeds"] = (int) $num_feeds;
2113
2114                 $data['last_article_id'] = getLastArticleId($link);
2115                 $data['cdm_expanded'] = get_pref($link, 'CDM_EXPANDED');
2116
2117                 if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
2118
2119                         $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
2120
2121                         if (time() - $_SESSION["daemon_stamp_check"] > 30) {
2122
2123                                 $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
2124
2125                                 if ($stamp) {
2126                                         $stamp_delta = time() - $stamp;
2127
2128                                         if ($stamp_delta > 1800) {
2129                                                 $stamp_check = 0;
2130                                         } else {
2131                                                 $stamp_check = 1;
2132                                                 $_SESSION["daemon_stamp_check"] = time();
2133                                         }
2134
2135                                         $data['daemon_stamp_ok'] = $stamp_check;
2136
2137                                         $stamp_fmt = date("Y.m.d, G:i", $stamp);
2138
2139                                         $data['daemon_stamp'] = $stamp_fmt;
2140                                 }
2141                         }
2142                 }
2143
2144                 if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
2145                                 $new_version_details = @check_for_update($link);
2146
2147                                 $data['new_version_available'] = (int) ($new_version_details != false);
2148
2149                                 $_SESSION["last_version_check"] = time();
2150                 }
2151
2152                 return $data;
2153         }
2154
2155         function search_to_sql($link, $search, $match_on) {
2156
2157                 $search_query_part = "";
2158
2159                 $keywords = explode(" ", $search);
2160                 $query_keywords = array();
2161
2162                 foreach ($keywords as $k) {
2163                         if (strpos($k, "-") === 0) {
2164                                 $k = substr($k, 1);
2165                                 $not = "NOT";
2166                         } else {
2167                                 $not = "";
2168                         }
2169
2170                         $commandpair = explode(":", mb_strtolower($k), 2);
2171
2172                         if ($commandpair[0] == "note" && $commandpair[1]) {
2173
2174                                 if ($commandpair[1] == "true")
2175                                         array_push($query_keywords, "($not (note IS NOT NULL AND note != ''))");
2176                                 else
2177                                         array_push($query_keywords, "($not (note IS NULL OR note = ''))");
2178
2179                         } else if ($commandpair[0] == "star" && $commandpair[1]) {
2180
2181                                 if ($commandpair[1] == "true")
2182                                         array_push($query_keywords, "($not (marked = true))");
2183                                 else
2184                                         array_push($query_keywords, "($not (marked = false))");
2185
2186                         } else if ($commandpair[0] == "pub" && $commandpair[1]) {
2187
2188                                 if ($commandpair[1] == "true")
2189                                         array_push($query_keywords, "($not (published = true))");
2190                                 else
2191                                         array_push($query_keywords, "($not (published = false))");
2192
2193                         } else if (strpos($k, "@") === 0) {
2194
2195                                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $_SESSION['uid']);
2196                                 $orig_ts = strtotime(substr($k, 1));
2197                                 $k = date("Y-m-d", convert_timestamp($orig_ts, $user_tz_string, 'UTC'));
2198
2199                                 //$k = date("Y-m-d", strtotime(substr($k, 1)));
2200
2201                                 array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
2202                         } else if ($match_on == "both") {
2203                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2204                                                 OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2205                         } else if ($match_on == "title") {
2206                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%'))");
2207                         } else if ($match_on == "content") {
2208                                 array_push($query_keywords, "(UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2209                         }
2210                 }
2211
2212                 $search_query_part = implode("AND", $query_keywords);
2213
2214                 return $search_query_part;
2215         }
2216
2217         function getChildCategories($link, $cat, $owner_uid) {
2218                 $rv = array();
2219
2220                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories
2221                         WHERE parent_cat = '$cat' AND owner_uid = $owner_uid");
2222
2223                 while ($line = db_fetch_assoc($result)) {
2224                         array_push($rv, $line["id"]);
2225                         $rv = array_merge($rv, getChildCategories($link, $line["id"], $owner_uid));
2226                 }
2227
2228                 return $rv;
2229         }
2230
2231         function queryFeedHeadlines($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, $include_children = false) {
2232
2233                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2234
2235                 $ext_tables_part = "";
2236
2237                         if ($search) {
2238
2239                                 if (SPHINX_ENABLED) {
2240                                         $ids = join(",", @sphinx_search($search, 0, 500));
2241
2242                                         if ($ids)
2243                                                 $search_query_part = "ref_id IN ($ids) AND ";
2244                                         else
2245                                                 $search_query_part = "ref_id = -1 AND ";
2246
2247                                 } else {
2248                                         $search_query_part = search_to_sql($link, $search, $match_on);
2249                                         $search_query_part .= " AND ";
2250                                 }
2251
2252                         } else {
2253                                 $search_query_part = "";
2254                         }
2255
2256                         if ($filter) {
2257                                 $filter_query_part = filter_to_sql($filter);
2258                         } else {
2259                                 $filter_query_part = "";
2260                         }
2261
2262                         if ($since_id) {
2263                                 $since_id_part = "ttrss_entries.id > $since_id AND ";
2264                         } else {
2265                                 $since_id_part = "";
2266                         }
2267
2268                         $view_query_part = "";
2269
2270                         if ($view_mode == "adaptive" || $view_query_part == "noscores") {
2271                                 if ($search) {
2272                                         $view_query_part = " ";
2273                                 } else if ($feed != -1) {
2274                                         $unread = getFeedUnread($link, $feed, $cat_view);
2275
2276                                         if ($cat_view && $feed > 0 && $include_children)
2277                                                 $unread += getCategoryChildrenUnread($link, $feed);
2278
2279                                         if ($unread > 0) {
2280                                                 $view_query_part = " unread = true AND ";
2281                                         }
2282                                 }
2283                         }
2284
2285                         if ($view_mode == "marked") {
2286                                 $view_query_part = " marked = true AND ";
2287                         }
2288
2289                         if ($view_mode == "published") {
2290                                 $view_query_part = " published = true AND ";
2291                         }
2292
2293                         if ($view_mode == "unread") {
2294                                 $view_query_part = " unread = true AND ";
2295                         }
2296
2297                         if ($view_mode == "updated") {
2298                                 $view_query_part = " (last_read is null and unread = false) AND ";
2299                         }
2300
2301                         if ($limit > 0) {
2302                                 $limit_query_part = "LIMIT " . $limit;
2303                         }
2304
2305                         $vfeed_query_part = "";
2306
2307                         // override query strategy and enable feed display when searching globally
2308                         if ($search && $search_mode == "all_feeds") {
2309                                 $query_strategy_part = "ttrss_entries.id > 0";
2310                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2311                         /* tags */
2312                         } else if (preg_match("/^-?[0-9][0-9]*$/", $feed) == false) {
2313                                 $query_strategy_part = "ttrss_entries.id > 0";
2314                                 $vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
2315                                         id = feed_id) as feed_title,";
2316                         } else if ($feed > 0 && $search && $search_mode == "this_cat") {
2317
2318                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2319
2320                                 $tmp_result = false;
2321
2322                                 if ($cat_view) {
2323                                         $tmp_result = db_query($link, "SELECT id
2324                                                 FROM ttrss_feeds WHERE cat_id = '$feed'");
2325                                 } else {
2326                                         $tmp_result = db_query($link, "SELECT id
2327                                                 FROM ttrss_feeds WHERE cat_id = (SELECT cat_id FROM ttrss_feeds
2328                                                         WHERE id = '$feed') AND id != '$feed'");
2329                                 }
2330
2331                                 $cat_siblings = array();
2332
2333                                 if (db_num_rows($tmp_result) > 0) {
2334                                         while ($p = db_fetch_assoc($tmp_result)) {
2335                                                 array_push($cat_siblings, "feed_id = " . $p["id"]);
2336                                         }
2337
2338                                         $query_strategy_part = sprintf("(feed_id = %d OR %s)",
2339                                                 $feed, implode(" OR ", $cat_siblings));
2340
2341                                 } else {
2342                                         $query_strategy_part = "ttrss_entries.id > 0";
2343                                 }
2344
2345                         } else if ($feed > 0) {
2346
2347                                 if ($cat_view) {
2348
2349                                         if ($feed > 0) {
2350                                                 if ($include_children) {
2351                                                         # sub-cats
2352                                                         $subcats = getChildCategories($link, $feed, $owner_uid);
2353
2354                                                         if (count($subcats) == 0) {
2355                                                                 $query_strategy_part = "cat_id = '$feed'";
2356                                                         } else {
2357                                                                 array_push($subcats, $feed);
2358                                                                 $query_strategy_part = "cat_id IN (".
2359                                                                         implode(",", $subcats).")";
2360                                                         }
2361                                                 } else {
2362                                                         $query_strategy_part = "cat_id = '$feed'";
2363                                                 }
2364
2365                                         } else {
2366                                                 $query_strategy_part = "cat_id IS NULL";
2367                                         }
2368
2369                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2370
2371                                 } else {
2372                                         $query_strategy_part = "feed_id = '$feed'";
2373                                 }
2374                         } else if ($feed == 0 && !$cat_view) { // archive virtual feed
2375                                 $query_strategy_part = "feed_id IS NULL";
2376                         } else if ($feed == 0 && $cat_view) { // uncategorized
2377                                 $query_strategy_part = "cat_id IS NULL AND feed_id IS NOT NULL";
2378                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2379                         } else if ($feed == -1) { // starred virtual feed
2380                                 $query_strategy_part = "marked = true";
2381                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2382                         } else if ($feed == -2) { // published virtual feed OR labels category
2383
2384                                 if (!$cat_view) {
2385                                         $query_strategy_part = "published = true";
2386                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2387                                 } else {
2388                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2389
2390                                         $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2391
2392                                         $query_strategy_part = "ttrss_labels2.id = ttrss_user_labels2.label_id AND
2393                                                 ttrss_user_labels2.article_id = ref_id";
2394
2395                                 }
2396
2397                         } else if ($feed == -3) { // fresh virtual feed
2398                                 $query_strategy_part = "unread = true AND score >= 0";
2399
2400                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
2401
2402                                 if (DB_TYPE == "pgsql") {
2403                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
2404                                 } else {
2405                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
2406                                 }
2407
2408                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2409                         } else if ($feed == -4) { // all articles virtual feed
2410                                 $query_strategy_part = "true";
2411                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2412                         } else if ($feed <= -10) { // labels
2413                                 $label_id = -$feed - 11;
2414
2415                                 $query_strategy_part = "label_id = '$label_id' AND
2416                                         ttrss_labels2.id = ttrss_user_labels2.label_id AND
2417                                         ttrss_user_labels2.article_id = ref_id";
2418
2419                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2420                                 $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2421
2422                         } else {
2423                                 $query_strategy_part = "id > 0"; // dumb
2424                         }
2425
2426                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
2427                                 $date_sort_field = "updated";
2428                         } else {
2429                                 $date_sort_field = "date_entered";
2430                         }
2431
2432                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
2433                                 $order_by = "$date_sort_field";
2434                         } else {
2435                                 $order_by = "$date_sort_field DESC";
2436                         }
2437
2438                         if ($view_mode != "noscores") {
2439                                 $order_by = "score DESC, $order_by";
2440                         }
2441
2442                         if ($override_order) {
2443                                 $order_by = $override_order;
2444                         }
2445
2446                         $feed_title = "";
2447
2448                         if ($search) {
2449                                 $feed_title = "Search results";
2450                         } else {
2451                                 if ($cat_view) {
2452                                         $feed_title = getCategoryTitle($link, $feed);
2453                                 } else {
2454                                         if (is_numeric($feed) && $feed > 0) {
2455                                                 $result = db_query($link, "SELECT title,site_url,last_error
2456                                                         FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = $owner_uid");
2457
2458                                                 $feed_title = db_fetch_result($result, 0, "title");
2459                                                 $feed_site_url = db_fetch_result($result, 0, "site_url");
2460                                                 $last_error = db_fetch_result($result, 0, "last_error");
2461                                         } else {
2462                                                 $feed_title = getFeedTitle($link, $feed);
2463                                         }
2464                                 }
2465                         }
2466
2467                         $content_query_part = "content as content_preview,";
2468
2469                         if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
2470
2471                                 if ($feed >= 0) {
2472                                         $feed_kind = "Feeds";
2473                                 } else {
2474                                         $feed_kind = "Labels";
2475                                 }
2476
2477                                 if ($limit_query_part) {
2478                                         $offset_query_part = "OFFSET $offset";
2479                                 }
2480
2481                                 if ($vfeed_query_part && get_pref($link, 'VFEED_GROUP_BY_FEED', $owner_uid)) {
2482                                         if (!$override_order) {
2483                                                 $order_by = "ttrss_feeds.title, $order_by";
2484                                         }
2485                                 }
2486
2487                                 if ($feed != "0") {
2488                                         $from_qpart = "ttrss_entries,ttrss_user_entries,ttrss_feeds$ext_tables_part";
2489                                         $feed_check_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
2490
2491                                 } else {
2492                                         $from_qpart = "ttrss_entries,ttrss_user_entries$ext_tables_part
2493                                                 LEFT JOIN ttrss_feeds ON (feed_id = ttrss_feeds.id)";
2494                                 }
2495
2496                                 $query = "SELECT DISTINCT
2497                                                 date_entered,
2498                                                 guid,
2499                                                 ttrss_entries.id,ttrss_entries.title,
2500                                                 updated,
2501                                                 label_cache,
2502                                                 tag_cache,
2503                                                 always_display_enclosures,
2504                                                 site_url,
2505                                                 note,
2506                                                 num_comments,
2507                                                 comments,
2508                                                 int_id,
2509                                                 unread,feed_id,marked,published,link,last_read,orig_feed_id,
2510                                                 ".SUBSTRING_FOR_DATE."(last_read,1,19) as last_read_noms,
2511                                                 $vfeed_query_part
2512                                                 $content_query_part
2513                                                 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated_noms,
2514                                                 author,score
2515                                         FROM
2516                                                 $from_qpart
2517                                         WHERE
2518                                         $feed_check_qpart
2519                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
2520                                         ttrss_user_entries.owner_uid = '$owner_uid' AND
2521                                         $search_query_part
2522                                         $filter_query_part
2523                                         $view_query_part
2524                                         $since_id_part
2525                                         $query_strategy_part ORDER BY $order_by
2526                                         $limit_query_part $offset_query_part";
2527
2528                                 if ($_REQUEST["debug"]) print $query;
2529
2530                                 $result = db_query($link, $query);
2531
2532                         } else {
2533                                 // browsing by tag
2534
2535                                 $select_qpart = "SELECT DISTINCT " .
2536                                                                 "date_entered," .
2537                                                                 "guid," .
2538                                                                 "note," .
2539                                                                 "ttrss_entries.id as id," .
2540                                                                 "title," .
2541                                                                 "updated," .
2542                                                                 "unread," .
2543                                                                 "feed_id," .
2544                                                                 "orig_feed_id," .
2545                                                                 "marked," .
2546                                                                 "num_comments, " .
2547                                                                 "comments, " .
2548                                                                 "tag_cache," .
2549                                                                 "label_cache," .
2550                                                                 "link," .
2551                                                                 "last_read," .
2552                                                                 SUBSTRING_FOR_DATE . "(last_read,1,19) as last_read_noms," .
2553                                                                 $since_id_part .
2554                                                                 $vfeed_query_part .
2555                                                                 $content_query_part .
2556                                                                 SUBSTRING_FOR_DATE . "(updated,1,19) as updated_noms," .
2557                                                                 "score ";
2558
2559                                 $feed_kind = "Tags";
2560                                 $all_tags = explode(",", $feed);
2561                                 if ($search_mode == 'any') {
2562                                         $tag_sql = "tag_name in (" . implode(", ", array_map("db_quote", $all_tags)) . ")";
2563                                         $from_qpart = " FROM ttrss_entries,ttrss_user_entries,ttrss_tags ";
2564                                         $where_qpart = " WHERE " .
2565                                                                    "ref_id = ttrss_entries.id AND " .
2566                                                                    "ttrss_user_entries.owner_uid = $owner_uid AND " .
2567                                                                    "post_int_id = int_id AND $tag_sql AND " .
2568                                                                    $view_query_part .
2569                                                                    $search_query_part .
2570                                                                    $query_strategy_part . " ORDER BY $order_by " .
2571                                                                    $limit_query_part;
2572
2573                                 } else {
2574                                         $i = 1;
2575                                         $sub_selects = array();
2576                                         $sub_ands = array();
2577                                         foreach ($all_tags as $term) {
2578                                                 array_push($sub_selects, "(SELECT post_int_id from ttrss_tags WHERE tag_name = " . db_quote($term) . " AND owner_uid = $owner_uid) as A$i");
2579                                                 $i++;
2580                                         }
2581                                         if ($i > 2) {
2582                                                 $x = 1;
2583                                                 $y = 2;
2584                                                 do {
2585                                                         array_push($sub_ands, "A$x.post_int_id = A$y.post_int_id");
2586                                                         $x++;
2587                                                         $y++;
2588                                                 } while ($y < $i);
2589                                         }
2590                                         array_push($sub_ands, "A1.post_int_id = ttrss_user_entries.int_id and ttrss_user_entries.owner_uid = $owner_uid");
2591                                         array_push($sub_ands, "ttrss_user_entries.ref_id = ttrss_entries.id");
2592                                         $from_qpart = " FROM " . implode(", ", $sub_selects) . ", ttrss_user_entries, ttrss_entries";
2593                                         $where_qpart = " WHERE " . implode(" AND ", $sub_ands);
2594                                 }
2595                                 //                              error_log("TAG SQL: " . $tag_sql);
2596                                 // $tag_sql = "tag_name = '$feed'";   DEFAULT way
2597
2598                                 //                              error_log("[". $select_qpart . "][" . $from_qpart . "][" .$where_qpart . "]");
2599                                 $result = db_query($link, $select_qpart . $from_qpart . $where_qpart);
2600                         }
2601
2602                         return array($result, $feed_title, $feed_site_url, $last_error);
2603
2604         }
2605
2606         function sanitize($link, $str, $force_strip_tags = false, $owner = false, $site_url = false) {
2607                 global $purifier;
2608
2609                 if (!$owner) $owner = $_SESSION["uid"];
2610
2611                 $res = trim($str); if (!$res) return '';
2612
2613                 // create global Purifier object if needed
2614                 if (!$purifier) {
2615                         require_once 'lib/htmlpurifier/library/HTMLPurifier.auto.php';
2616
2617                         $config = HTMLPurifier_Config::createDefault();
2618
2619                         $allowed = "p,a[href],i,em,b,strong,code,pre,blockquote,br,img[src|alt|title|align|hspace],ul,ol,li,h1,h2,h3,h4,s,object[classid|type|id|name|width|height|codebase],param[name|value],table,tr,td,span[class]";
2620
2621                         $config->set('HTML.SafeObject', true);
2622                         @$config->set('HTML', 'Allowed', $allowed);
2623                         $config->set('Output.FlashCompat', true);
2624                         $config->set('Attr.EnableID', true);
2625                         if (!defined('MOBILE_VERSION')) {
2626                                 @$config->set('Cache', 'SerializerPath', CACHE_DIR . "/htmlpurifier");
2627                         } else {
2628                                 @$config->set('Cache', 'SerializerPath', "../" . CACHE_DIR . "/htmlpurifier");
2629                         }
2630
2631                         $config->set('Filter.YouTube', true);
2632
2633                         $purifier = new HTMLPurifier($config);
2634                 }
2635
2636                 $res = $purifier->purify($res);
2637
2638                 if (get_pref($link, "STRIP_IMAGES", $owner)) {
2639                         $res = preg_replace('/<img[^>]+>/is', '', $res);
2640                 }
2641
2642                 if (strpos($res, "href=") === false)
2643                         $res = rewrite_urls($res);
2644
2645                 $charset_hack = '<head>
2646                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
2647                 </head>';
2648
2649                 $res = trim($res); if (!$res) return '';
2650
2651                 libxml_use_internal_errors(true);
2652
2653                 $doc = new DOMDocument();
2654                 $doc->loadHTML($charset_hack . $res);
2655                 $xpath = new DOMXPath($doc);
2656
2657                 $entries = $xpath->query('(//a[@href]|//img[@src])');
2658                 $br_inserted = 0;
2659
2660                 foreach ($entries as $entry) {
2661
2662                         if ($site_url) {
2663
2664                                 if ($entry->hasAttribute('href'))
2665                                         $entry->setAttribute('href',
2666                                                 rewrite_relative_url($site_url, $entry->getAttribute('href')));
2667
2668                                 if ($entry->hasAttribute('src'))
2669                                         if (preg_match('/^image.php\?i=[a-z0-9]+$/', $entry->getAttribute('src')) == 0)
2670                                                 $entry->setAttribute('src',
2671                                                         rewrite_relative_url($site_url, $entry->getAttribute('src')));
2672                         }
2673
2674                         if (strtolower($entry->nodeName) == "a") {
2675                                 $entry->setAttribute("target", "_blank");
2676                         }
2677
2678                         if (strtolower($entry->nodeName) == "img" && !$br_inserted) {
2679                                 $br = $doc->createElement("br");
2680
2681                                 if ($entry->parentNode->nextSibling) {
2682                                         $entry->parentNode->insertBefore($br, $entry->nextSibling);
2683                                         $br_inserted = 1;
2684                                 }
2685
2686                         }
2687                 }
2688
2689                 $node = $doc->getElementsByTagName('body')->item(0);
2690
2691                 return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
2692         }
2693
2694         /**
2695          * Send by mail a digest of last articles.
2696          *
2697          * @param mixed $link The database connection.
2698          * @param integer $limit The maximum number of articles by digest.
2699          * @return boolean Return false if digests are not enabled.
2700          */
2701         function send_headlines_digests($link, $debug = false) {
2702
2703                 require_once 'lib/phpmailer/class.phpmailer.php';
2704
2705                 $user_limit = 15; // amount of users to process (e.g. emails to send out)
2706                 $limit = 1000; // maximum amount of headlines to include
2707
2708                 if ($debug) _debug("Sending digests, batch of max $user_limit users, headline limit = $limit");
2709
2710                 if (DB_TYPE == "pgsql") {
2711                         $interval_query = "last_digest_sent < NOW() - INTERVAL '1 days'";
2712                 } else if (DB_TYPE == "mysql") {
2713                         $interval_query = "last_digest_sent < DATE_SUB(NOW(), INTERVAL 1 DAY)";
2714                 }
2715
2716                 $result = db_query($link, "SELECT id,email FROM ttrss_users
2717                                 WHERE email != '' AND (last_digest_sent IS NULL OR $interval_query)");
2718
2719                 while ($line = db_fetch_assoc($result)) {
2720
2721                         if (get_pref($link, 'DIGEST_ENABLE', $line['id'], false)) {
2722                                 $preferred_ts = strtotime(get_pref($link, 'DIGEST_PREFERRED_TIME', $line['id'], '00:00'));
2723
2724                                 // try to send digests within 2 hours of preferred time
2725                                 if ($preferred_ts && time() >= $preferred_ts &&
2726                                                 time() - $preferred_ts <= 7200) {
2727
2728                                         if ($debug) print "Sending digest for UID:" . $line['id'] . " - " . $line["email"] . " ... ";
2729
2730                                         $do_catchup = get_pref($link, 'DIGEST_CATCHUP', $line['id'], false);
2731
2732                                         global $tz_offset;
2733
2734                                         // reset tz_offset global to prevent tz cache clash between users
2735                                         $tz_offset = -1;
2736
2737                                         $tuple = prepare_headlines_digest($link, $line["id"], 1, $limit);
2738                                         $digest = $tuple[0];
2739                                         $headlines_count = $tuple[1];
2740                                         $affected_ids = $tuple[2];
2741                                         $digest_text = $tuple[3];
2742
2743                                         if ($headlines_count > 0) {
2744
2745                                                 $mail = new PHPMailer();
2746
2747                                                 $mail->PluginDir = "lib/phpmailer/";
2748                                                 $mail->SetLanguage("en", "lib/phpmailer/language/");
2749
2750                                                 $mail->CharSet = "UTF-8";
2751
2752                                                 $mail->From = SMTP_FROM_ADDRESS;
2753                                                 $mail->FromName = SMTP_FROM_NAME;
2754                                                 $mail->AddAddress($line["email"], $line["login"]);
2755
2756                                                 if (SMTP_HOST) {
2757                                                         $mail->Host = SMTP_HOST;
2758                                                         $mail->Mailer = "smtp";
2759                                                         $mail->SMTPAuth = SMTP_LOGIN != '';
2760                                                         $mail->Username = SMTP_LOGIN;
2761                                                         $mail->Password = SMTP_PASSWORD;
2762                                                 }
2763
2764                                                 $mail->IsHTML(true);
2765                                                 $mail->Subject = DIGEST_SUBJECT;
2766                                                 $mail->Body = $digest;
2767                                                 $mail->AltBody = $digest_text;
2768
2769                                                 $rc = $mail->Send();
2770
2771                                                 if (!$rc && $debug) print "ERROR: " . $mail->ErrorInfo;
2772
2773                                                 if ($debug) print "RC=$rc\n";
2774
2775                                                 if ($rc && $do_catchup) {
2776                                                         if ($debug) print "Marking affected articles as read...\n";
2777                                                         catchupArticlesById($link, $affected_ids, 0, $line["id"]);
2778                                                 }
2779                                         } else {
2780                                                 if ($debug) print "No headlines\n";
2781                                         }
2782
2783                                         db_query($link, "UPDATE ttrss_users SET last_digest_sent = NOW()
2784                                                 WHERE id = " . $line["id"]);
2785
2786                                 }
2787                         }
2788                 }
2789
2790                 if ($debug) _debug("All done.");
2791
2792         }
2793
2794         function prepare_headlines_digest($link, $user_id, $days = 1, $limit = 1000) {
2795
2796                 require_once "lib/MiniTemplator.class.php";
2797
2798                 $tpl = new MiniTemplator;
2799                 $tpl_t = new MiniTemplator;
2800
2801                 $tpl->readTemplateFromFile("templates/digest_template_html.txt");
2802                 $tpl_t->readTemplateFromFile("templates/digest_template.txt");
2803
2804                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $user_id);
2805                 $local_ts = convert_timestamp(time(), 'UTC', $user_tz_string);
2806
2807                 $tpl->setVariable('CUR_DATE', date('Y/m/d', $local_ts));
2808                 $tpl->setVariable('CUR_TIME', date('G:i', $local_ts));
2809
2810                 $tpl_t->setVariable('CUR_DATE', date('Y/m/d', $local_ts));
2811                 $tpl_t->setVariable('CUR_TIME', date('G:i', $local_ts));
2812
2813                 $affected_ids = array();
2814
2815                 if (DB_TYPE == "pgsql") {
2816                         $interval_query = "ttrss_entries.date_updated > NOW() - INTERVAL '$days days'";
2817                 } else if (DB_TYPE == "mysql") {
2818                         $interval_query = "ttrss_entries.date_updated > DATE_SUB(NOW(), INTERVAL $days DAY)";
2819                 }
2820
2821                 $result = db_query($link, "SELECT ttrss_entries.title,
2822                                 ttrss_feeds.title AS feed_title,
2823                                 COALESCE(ttrss_feed_categories.title, '".__('Uncategorized')."') AS cat_title,
2824                                 date_updated,
2825                                 ttrss_user_entries.ref_id,
2826                                 link,
2827                                 score,
2828                                 content,
2829                                 ".SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
2830                         FROM
2831                                 ttrss_user_entries,ttrss_entries,ttrss_feeds
2832                         LEFT JOIN
2833                                 ttrss_feed_categories ON (cat_id = ttrss_feed_categories.id)
2834                         WHERE
2835                                 ref_id = ttrss_entries.id AND feed_id = ttrss_feeds.id
2836                                 AND include_in_digest = true
2837                                 AND $interval_query
2838                                 AND ttrss_user_entries.owner_uid = $user_id
2839                                 AND unread = true
2840                                 AND score >= 0
2841                         ORDER BY ttrss_feed_categories.title, ttrss_feeds.title, score DESC, date_updated DESC
2842                         LIMIT $limit");
2843
2844                 $cur_feed_title = "";
2845
2846                 $headlines_count = db_num_rows($result);
2847
2848                 $headlines = array();
2849
2850                 while ($line = db_fetch_assoc($result)) {
2851                         array_push($headlines, $line);
2852                 }
2853
2854                 for ($i = 0; $i < sizeof($headlines); $i++) {
2855
2856                         $line = $headlines[$i];
2857
2858                         array_push($affected_ids, $line["ref_id"]);
2859
2860                         $updated = make_local_datetime($link, $line['last_updated'], false,
2861                                 $user_id);
2862
2863 /*                      if ($line["score"] != 0) {
2864                                 if ($line["score"] > 0) $line["score"] = '+' . $line["score"];
2865
2866                                 $line["title"] .= " (".$line['score'].")";
2867                         } */
2868
2869                         if (get_pref($link, 'ENABLE_FEED_CATS', $user_id)) {
2870                                 $line['feed_title'] = $line['cat_title'] . " / " . $line['feed_title'];
2871                         }
2872
2873                         $tpl->setVariable('FEED_TITLE', $line["feed_title"]);
2874                         $tpl->setVariable('ARTICLE_TITLE', $line["title"]);
2875                         $tpl->setVariable('ARTICLE_LINK', $line["link"]);
2876                         $tpl->setVariable('ARTICLE_UPDATED', $updated);
2877                         $tpl->setVariable('ARTICLE_EXCERPT',
2878                                 truncate_string(strip_tags($line["content"]), 300));
2879 //                      $tpl->setVariable('ARTICLE_CONTENT',
2880 //                              strip_tags($article_content));
2881
2882                         $tpl->addBlock('article');
2883
2884                         $tpl_t->setVariable('FEED_TITLE', $line["feed_title"]);
2885                         $tpl_t->setVariable('ARTICLE_TITLE', $line["title"]);
2886                         $tpl_t->setVariable('ARTICLE_LINK', $line["link"]);
2887                         $tpl_t->setVariable('ARTICLE_UPDATED', $updated);
2888 //                      $tpl_t->setVariable('ARTICLE_EXCERPT',
2889 //                              truncate_string(strip_tags($line["excerpt"]), 100));
2890
2891                         $tpl_t->addBlock('article');
2892
2893                         if ($headlines[$i]['feed_title'] != $headlines[$i+1]['feed_title']) {
2894                                 $tpl->addBlock('feed');
2895                                 $tpl_t->addBlock('feed');
2896                         }
2897
2898                 }
2899
2900                 $tpl->addBlock('digest');
2901                 $tpl->generateOutputToString($tmp);
2902
2903                 $tpl_t->addBlock('digest');
2904                 $tpl_t->generateOutputToString($tmp_t);
2905
2906                 return array($tmp, $headlines_count, $affected_ids, $tmp_t);
2907         }
2908
2909         function check_for_update($link) {
2910                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2911                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION;
2912
2913                         $version_data = @fetch_file_contents($version_url);
2914
2915                         if ($version_data) {
2916                                 $version_data = json_decode($version_data, true);
2917                                 if ($version_data && $version_data['version']) {
2918
2919                                         if (version_compare(VERSION, $version_data['version']) == -1) {
2920                                                 return $version_data;
2921                                         }
2922                                 }
2923                         }
2924                 }
2925                 return false;
2926         }
2927
2928         function markArticlesById($link, $ids, $cmode) {
2929
2930                 $tmp_ids = array();
2931
2932                 foreach ($ids as $id) {
2933                         array_push($tmp_ids, "ref_id = '$id'");
2934                 }
2935
2936                 $ids_qpart = join(" OR ", $tmp_ids);
2937
2938                 if ($cmode == 0) {
2939                         db_query($link, "UPDATE ttrss_user_entries SET
2940                         marked = false,last_read = NOW()
2941                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2942                 } else if ($cmode == 1) {
2943                         db_query($link, "UPDATE ttrss_user_entries SET
2944                         marked = true
2945                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2946                 } else {
2947                         db_query($link, "UPDATE ttrss_user_entries SET
2948                         marked = NOT marked,last_read = NOW()
2949                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2950                 }
2951         }
2952
2953         function publishArticlesById($link, $ids, $cmode) {
2954
2955                 $tmp_ids = array();
2956
2957                 foreach ($ids as $id) {
2958                         array_push($tmp_ids, "ref_id = '$id'");
2959                 }
2960
2961                 $ids_qpart = join(" OR ", $tmp_ids);
2962
2963                 if ($cmode == 0) {
2964                         db_query($link, "UPDATE ttrss_user_entries SET
2965                         published = false,last_read = NOW()
2966                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2967                 } else if ($cmode == 1) {
2968                         db_query($link, "UPDATE ttrss_user_entries SET
2969                         published = true
2970                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2971                 } else {
2972                         db_query($link, "UPDATE ttrss_user_entries SET
2973                         published = NOT published,last_read = NOW()
2974                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2975                 }
2976
2977                 if (PUBSUBHUBBUB_HUB) {
2978                         $rss_link = get_self_url_prefix() .
2979                                 "/public.php?op=rss&id=-2&key=" .
2980                                 get_feed_access_key($link, -2, false);
2981
2982                         $p = new Publisher(PUBSUBHUBBUB_HUB);
2983
2984                         $pubsub_result = $p->publish_update($rss_link);
2985                 }
2986         }
2987
2988         function catchupArticlesById($link, $ids, $cmode, $owner_uid = false) {
2989
2990                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2991                 if (count($ids) == 0) return;
2992
2993                 $tmp_ids = array();
2994
2995                 foreach ($ids as $id) {
2996                         array_push($tmp_ids, "ref_id = '$id'");
2997                 }
2998
2999                 $ids_qpart = join(" OR ", $tmp_ids);
3000
3001                 if ($cmode == 0) {
3002                         db_query($link, "UPDATE ttrss_user_entries SET
3003                         unread = false,last_read = NOW()
3004                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3005                 } else if ($cmode == 1) {
3006                         db_query($link, "UPDATE ttrss_user_entries SET
3007                         unread = true
3008                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3009                 } else {
3010                         db_query($link, "UPDATE ttrss_user_entries SET
3011                         unread = NOT unread,last_read = NOW()
3012                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3013                 }
3014
3015                 /* update ccache */
3016
3017                 $result = db_query($link, "SELECT DISTINCT feed_id FROM ttrss_user_entries
3018                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3019
3020                 while ($line = db_fetch_assoc($result)) {
3021                         ccache_update($link, $line["feed_id"], $owner_uid);
3022                 }
3023         }
3024
3025         function catchupArticleById($link, $id, $cmode) {
3026
3027                 if ($cmode == 0) {
3028                         db_query($link, "UPDATE ttrss_user_entries SET
3029                         unread = false,last_read = NOW()
3030                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3031                 } else if ($cmode == 1) {
3032                         db_query($link, "UPDATE ttrss_user_entries SET
3033                         unread = true
3034                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3035                 } else {
3036                         db_query($link, "UPDATE ttrss_user_entries SET
3037                         unread = NOT unread,last_read = NOW()
3038                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3039                 }
3040
3041                 $feed_id = getArticleFeed($link, $id);
3042                 ccache_update($link, $feed_id, $_SESSION["uid"]);
3043         }
3044
3045         function make_guid_from_title($title) {
3046                 return preg_replace("/[ \"\',.:;]/", "-",
3047                         mb_strtolower(strip_tags($title), 'utf-8'));
3048         }
3049
3050         function get_article_tags($link, $id, $owner_uid = 0, $tag_cache = false) {
3051
3052                 $a_id = db_escape_string($id);
3053
3054                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3055
3056                 $query = "SELECT DISTINCT tag_name,
3057                         owner_uid as owner FROM
3058                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
3059                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
3060
3061                 $obj_id = md5("TAGS:$owner_uid:$id");
3062                 $tags = array();
3063
3064                 /* check cache first */
3065
3066                 if ($tag_cache === false) {
3067                         $result = db_query($link, "SELECT tag_cache FROM ttrss_user_entries
3068                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
3069
3070                         $tag_cache = db_fetch_result($result, 0, "tag_cache");
3071                 }
3072
3073                 if ($tag_cache) {
3074                         $tags = explode(",", $tag_cache);
3075                 } else {
3076
3077                         /* do it the hard way */
3078
3079                         $tmp_result = db_query($link, $query);
3080
3081                         while ($tmp_line = db_fetch_assoc($tmp_result)) {
3082                                 array_push($tags, $tmp_line["tag_name"]);
3083                         }
3084
3085                         /* update the cache */
3086
3087                         $tags_str = db_escape_string(join(",", $tags));
3088
3089                         db_query($link, "UPDATE ttrss_user_entries
3090                                 SET tag_cache = '$tags_str' WHERE ref_id = '$id'
3091                                 AND owner_uid = $owner_uid");
3092                 }
3093
3094                 return $tags;
3095         }
3096
3097         function trim_array($array) {
3098                 $tmp = $array;
3099                 array_walk($tmp, 'trim');
3100                 return $tmp;
3101         }
3102
3103         function tag_is_valid($tag) {
3104                 if ($tag == '') return false;
3105                 if (preg_match("/^[0-9]*$/", $tag)) return false;
3106                 if (mb_strlen($tag) > 250) return false;
3107
3108                 if (function_exists('iconv')) {
3109                         $tag = iconv("utf-8", "utf-8", $tag);
3110                 }
3111
3112                 if (!$tag) return false;
3113
3114                 return true;
3115         }
3116
3117         function render_login_form($link, $mobile = 0) {
3118                 switch ($mobile) {
3119                 case 0:
3120                         require_once "login_form.php";
3121                         break;
3122                 case 1:
3123                         require_once "mobile/login_form.php";
3124                         break;
3125                 case 2:
3126                         require_once "mobile/classic/login_form.php";
3127                 }
3128         }
3129
3130         // from http://developer.apple.com/internet/safari/faq.html
3131         function no_cache_incantation() {
3132                 header("Expires: Mon, 22 Dec 1980 00:00:00 GMT"); // Happy birthday to me :)
3133                 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
3134                 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); // HTTP/1.1
3135                 header("Cache-Control: post-check=0, pre-check=0", false);
3136                 header("Pragma: no-cache"); // HTTP/1.0
3137         }
3138
3139         function format_warning($msg, $id = "") {
3140                 global $link;
3141                 return "<div class=\"warning\" id=\"$id\">
3142                         <img src=\"".theme_image($link, "images/sign_excl.png")."\">$msg</div>";
3143         }
3144
3145         function format_notice($msg, $id = "") {
3146                 global $link;
3147                 return "<div class=\"notice\" id=\"$id\">
3148                         <img src=\"".theme_image($link, "images/sign_info.png")."\">$msg</div>";
3149         }
3150
3151         function format_error($msg, $id = "") {
3152                 global $link;
3153                 return "<div class=\"error\" id=\"$id\">
3154                         <img src=\"".theme_image($link, "images/sign_excl.png")."\">$msg</div>";
3155         }
3156
3157         function print_notice($msg) {
3158                 return print format_notice($msg);
3159         }
3160
3161         function print_warning($msg) {
3162                 return print format_warning($msg);
3163         }
3164
3165         function print_error($msg) {
3166                 return print format_error($msg);
3167         }
3168
3169
3170         function T_sprintf() {
3171                 $args = func_get_args();
3172                 return vsprintf(__(array_shift($args)), $args);
3173         }
3174
3175         function format_inline_player($link, $url, $ctype) {
3176
3177                 $entry = "";
3178
3179                 if (strpos($ctype, "audio/") === 0) {
3180
3181                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
3182                                 strpos($_SERVER['HTTP_USER_AGENT'], "Chrome") !== false ||
3183                                 strpos($_SERVER['HTTP_USER_AGENT'], "Safari") !== false )) {
3184
3185                                 $id = 'AUDIO-' . uniqid();
3186
3187                                 $entry .= "<audio id=\"$id\"\">
3188                                         <source src=\"$url\"></source>
3189                                         </audio>";
3190
3191                                 $entry .= "<span onclick=\"player(this)\"
3192                                         title=\"".__("Click to play")."\" status=\"0\"
3193                                         class=\"player\" audio-id=\"$id\">".__("Play")."</span>";
3194
3195                         } else {
3196
3197                                 $entry .= "<object type=\"application/x-shockwave-flash\"
3198                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
3199                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
3200                                         <param name=\"movie\"
3201                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
3202                                         </object>";
3203                         }
3204                 }
3205
3206                 $filename = substr($url, strrpos($url, "/")+1);
3207
3208                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3209                         $filename . " (" . $ctype . ")" . "</a>";
3210
3211                 return $entry;
3212         }
3213
3214         function format_article($link, $id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
3215                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3216
3217                 $rv = array();
3218
3219                 $rv['id'] = $id;
3220
3221                 /* we can figure out feed_id from article id anyway, why do we
3222                  * pass feed_id here? let's ignore the argument :( */
3223
3224                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3225                         WHERE ref_id = '$id'");
3226
3227                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
3228
3229                 $rv['feed_id'] = $feed_id;
3230
3231                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
3232
3233                 $result = db_query($link, "SELECT rtl_content, always_display_enclosures FROM ttrss_feeds
3234                         WHERE id = '$feed_id' AND owner_uid = $owner_uid");
3235
3236                 if (db_num_rows($result) == 1) {
3237                         $rtl_content = sql_bool_to_bool(db_fetch_result($result, 0, "rtl_content"));
3238                         $always_display_enclosures = sql_bool_to_bool(db_fetch_result($result, 0, "always_display_enclosures"));
3239                 } else {
3240                         $rtl_content = false;
3241                         $always_display_enclosures = false;
3242                 }
3243
3244                 if ($rtl_content) {
3245                         $rtl_tag = "dir=\"RTL\"";
3246                         $rtl_class = "RTL";
3247                 } else {
3248                         $rtl_tag = "";
3249                         $rtl_class = "";
3250                 }
3251
3252                 if ($mark_as_read) {
3253                         $result = db_query($link, "UPDATE ttrss_user_entries
3254                                 SET unread = false,last_read = NOW()
3255                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
3256
3257                         ccache_update($link, $feed_id, $owner_uid);
3258                 }
3259
3260                 $result = db_query($link, "SELECT title,link,content,feed_id,comments,int_id,
3261                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
3262                         (SELECT icon_url FROM ttrss_feeds WHERE id = feed_id) as icon_url,
3263                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
3264                         num_comments,
3265                         tag_cache,
3266                         author,
3267                         orig_feed_id,
3268                         note
3269                         FROM ttrss_entries,ttrss_user_entries
3270                         WHERE   id = '$id' AND ref_id = id AND owner_uid = $owner_uid");
3271
3272                 if ($result) {
3273
3274                         $line = db_fetch_assoc($result);
3275
3276                         if ($line["icon_url"]) {
3277                                 $feed_icon = "<img src=\"" . $line["icon_url"] . "\">";
3278                         } else {
3279                                 $feed_icon = "&nbsp;";
3280                         }
3281
3282                         $feed_site_url = $line['site_url'];
3283
3284                         $num_comments = $line["num_comments"];
3285                         $entry_comments = "";
3286
3287                         if ($num_comments > 0) {
3288                                 if ($line["comments"]) {
3289                                         $comments_url = $line["comments"];
3290                                 } else {
3291                                         $comments_url = $line["link"];
3292                                 }
3293                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
3294                         } else {
3295                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
3296                                         $entry_comments = "<a target='_blank' href=\"".$line["comments"]."\">comments</a>";
3297                                 }
3298                         }
3299
3300                         if ($zoom_mode) {
3301                                 header("Content-Type: text/html");
3302                                 $rv['content'] .= "<html><head>
3303                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
3304                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
3305                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
3306                                         </head><body>";
3307                         }
3308
3309                         $title_escaped = db_escape_string($line['title']);
3310
3311                         $rv['content'] .= "<div id=\"PTITLE-$id\" style=\"display : none\">" .
3312                                 truncate_string(strip_tags($line['title']), 15) . "</div>";
3313
3314                         $rv['content'] .= "<div id=\"PTITLE-FULL-$id\" style=\"display : none\">" .
3315                                 strip_tags($line['title']) . "</div>";
3316
3317                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
3318
3319                         $rv['content'] .= "<div onclick=\"return postClicked(event, $id)\"
3320                                 class=\"postHeader\" id=\"POSTHDR-$id\">";
3321
3322                         $entry_author = $line["author"];
3323
3324                         if ($entry_author) {
3325                                 $entry_author = __(" - ") . $entry_author;
3326                         }
3327
3328                         $parsed_updated = make_local_datetime($link, $line["updated"], true,
3329                                 $owner_uid, true);
3330
3331                         $rv['content'] .= "<div class=\"postDate$rtl_class\">$parsed_updated</div>";
3332
3333                         if ($line["link"]) {
3334                                 $rv['content'] .= "<div class='postTitle' clear='both'><a target='_blank'
3335                                         title=\"".htmlspecialchars($line['title'])."\"
3336                                         href=\"" .
3337                                         $line["link"] . "\">" .
3338                                         truncate_string($line["title"], 100) .
3339                                         "<span class='author'>$entry_author</span></a></div>";
3340                         } else {
3341                                 $rv['content'] .= "<div class='postTitle' clear='both'>" . $line["title"] . "$entry_author</div>";
3342                         }
3343
3344                         $tag_cache = $line["tag_cache"];
3345
3346                         if (!$tag_cache)
3347                                 $tags = get_article_tags($link, $id, $owner_uid);
3348                         else
3349                                 $tags = explode(",", $tag_cache);
3350
3351                         $tags_str = format_tags_string($tags, $id);
3352                         $tags_str_full = join(", ", $tags);
3353
3354                         if (!$tags_str_full) $tags_str_full = __("no tags");
3355
3356                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
3357
3358                         $rv['content'] .= "<div class='postTags' style='float : right'>
3359                                 <img src='".theme_image($link, 'images/tag.png')."'
3360                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
3361
3362                         if (!$zoom_mode) {
3363                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
3364                                         <a title=\"".__('Edit tags for this article')."\"
3365                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
3366
3367                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
3368                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
3369                                         position=\"below\">$tags_str_full</div>";
3370
3371                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/art-zoom.png')."\"
3372                                                 class='tagsPic' style=\"cursor : pointer\"
3373                                                 onclick=\"postOpenInNewTab(event, $id)\"
3374                                                 alt='Zoom' title='".__('Open article in new tab')."'>";
3375
3376                                 $button_plugins = explode(",", ARTICLE_BUTTON_PLUGINS);
3377
3378                                 foreach ($button_plugins as $p) {
3379                                         $pclass = trim("button_${p}");
3380
3381                                         if (class_exists($pclass)) {
3382                                                 $plugin = new $pclass($link);
3383                                                 $rv['content'] .= $plugin->render($id, $line);
3384                                         }
3385                                 }
3386
3387                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/digest_checkbox.png')."\"
3388                                                 class='tagsPic' style=\"cursor : pointer\"
3389                                                 onclick=\"closeArticlePanel($id)\"
3390                                                 title='".__('Close article')."'>";
3391
3392                         } else {
3393                                 $tags_str = strip_tags($tags_str);
3394                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
3395                         }
3396                         $rv['content'] .= "</div>";
3397                         $rv['content'] .= "<div clear='both'>$entry_comments</div>";
3398
3399                         if ($line["orig_feed_id"]) {
3400
3401                                 $tmp_result = db_query($link, "SELECT * FROM ttrss_archived_feeds
3402                                         WHERE id = ".$line["orig_feed_id"]);
3403
3404                                 if (db_num_rows($tmp_result) != 0) {
3405
3406                                         $rv['content'] .= "<div clear='both'>";
3407                                         $rv['content'] .= __("Originally from:");
3408
3409                                         $rv['content'] .= "&nbsp;";
3410
3411                                         $tmp_line = db_fetch_assoc($tmp_result);
3412
3413                                         $rv['content'] .= "<a target='_blank'
3414                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
3415                                                 $tmp_line['title'] . "</a>";
3416
3417                                         $rv['content'] .= "&nbsp;";
3418
3419                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3420                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.png'></a>";
3421
3422                                         $rv['content'] .= "</div>";
3423                                 }
3424                         }
3425
3426                         $rv['content'] .= "</div>";
3427
3428                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3429                                 if ($line['note']) {
3430                                         $rv['content'] .= format_article_note($id, $line['note']);
3431                                 }
3432                         $rv['content'] .= "</div>";
3433
3434                         $rv['content'] .= "<div class=\"postIcon\">" .
3435                                 "<a target=\"_blank\" title=\"".__("Visit the website")."\"$
3436                                 href=\"".htmlspecialchars($feed_site_url)."\">".
3437                                 $feed_icon . "</a></div>";
3438
3439                         $rv['content'] .= "<div class=\"postContent\">";
3440
3441                         // N-grams
3442
3443                         if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_RELATED_THRESHOLD')) {
3444
3445                                 $ngram_result = db_query($link, "SELECT id,title FROM
3446                                                 ttrss_entries,ttrss_user_entries
3447                                         WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
3448                                                 AND similarity(title, '$title_escaped') >= "._NGRAM_TITLE_RELATED_THRESHOLD."
3449                                                 AND title != '$title_escaped'
3450                                                 AND owner_uid = $owner_uid");
3451
3452                                 if (db_num_rows($ngram_result) > 0) {
3453                                         $rv['content'] .= "<div dojoType=\"dijit.form.DropDownButton\">".
3454                                                 "<span>" . __('Related')."</span>";
3455                                         $rv['content'] .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3456
3457                                         while ($nline = db_fetch_assoc($ngram_result)) {
3458                                                 $rv['content'] .= "<div onclick=\"hlOpenInNewTab(null,".$nline['id'].")\"
3459                                                         dojoType=\"dijit.MenuItem\">".$nline['title']."</div>";
3460
3461                                         }
3462                                         $rv['content'] .= "</div></div><br/";
3463                                 }
3464                         }
3465
3466                         $article_content = sanitize($link, $line["content"], false, $owner_uid,
3467                                 $feed_site_url);
3468
3469                         $rv['content'] .= $article_content;
3470
3471                         $rv['content'] .= format_article_enclosures($link, $id,
3472                                 $always_display_enclosures, $article_content);
3473
3474                         $rv['content'] .= "</div>";
3475
3476                         $rv['content'] .= "</div>";
3477
3478                 }
3479
3480                 if ($zoom_mode) {
3481                         $rv['content'] .= "
3482                                 <div style=\"text-align : center\">
3483                                 <button onclick=\"return window.close()\">".
3484                                         __("Close this window")."</button></div>";
3485                         $rv['content'] .= "</body></html>";
3486                 }
3487
3488                 return $rv;
3489
3490         }
3491
3492         function print_checkpoint($n, $s) {
3493                 $ts = getmicrotime();
3494                 echo sprintf("<!-- CP[$n] %.4f seconds -->", $ts - $s);
3495                 return $ts;
3496         }
3497
3498         function sanitize_tag($tag) {
3499                 $tag = trim($tag);
3500
3501                 $tag = mb_strtolower($tag, 'utf-8');
3502
3503                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3504
3505 //              $tag = str_replace('"', "", $tag);
3506 //              $tag = str_replace("+", " ", $tag);
3507                 $tag = str_replace("technorati tag: ", "", $tag);
3508
3509                 return $tag;
3510         }
3511
3512         function get_self_url_prefix() {
3513                 return SELF_URL_PATH;
3514         }
3515
3516         function opml_publish_url($link){
3517
3518                 $url_path = get_self_url_prefix();
3519                 $url_path .= "/opml.php?op=publish&key=" .
3520                         get_feed_access_key($link, 'OPML:Publish', false, $_SESSION["uid"]);
3521
3522                 return $url_path;
3523         }
3524
3525         /**
3526          * Purge a feed contents, marked articles excepted.
3527          *
3528          * @param mixed $link The database connection.
3529          * @param integer $id The id of the feed to purge.
3530          * @return void
3531          */
3532         function clear_feed_articles($link, $id) {
3533
3534                 if ($id != 0) {
3535                         $result = db_query($link, "DELETE FROM ttrss_user_entries
3536                         WHERE feed_id = '$id' AND marked = false AND owner_uid = " . $_SESSION["uid"]);
3537                 } else {
3538                         $result = db_query($link, "DELETE FROM ttrss_user_entries
3539                         WHERE feed_id IS NULL AND marked = false AND owner_uid = " . $_SESSION["uid"]);
3540                 }
3541
3542                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
3543                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
3544
3545                 ccache_update($link, $id, $_SESSION['uid']);
3546         } // function clear_feed_articles
3547
3548         /**
3549          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3550          *
3551          * @return string The Mozilla Firefox feed adding URL.
3552          */
3553         function add_feed_url() {
3554                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3555
3556                 $url_path = get_self_url_prefix() .
3557                         "/backend.php?op=pref-feeds&quiet=1&method=add&feed_url=%s";
3558                 return $url_path;
3559         } // function add_feed_url
3560
3561         function encrypt_password($pass, $salt = '', $mode2 = false) {
3562                 if ($salt && $mode2) {
3563                         return "MODE2:" . hash('sha256', $salt . $pass);
3564                 } else if ($salt) {
3565                         return "SHA1X:" . sha1("$salt:$pass");
3566                 } else {
3567                         return "SHA1:" . sha1($pass);
3568                 }
3569         } // function encrypt_password
3570
3571         function sanitize_article_content($text) {
3572                 # we don't support CDATA sections in articles, they break our own escaping
3573                 $text = preg_replace("/\[\[CDATA/", "", $text);
3574                 $text = preg_replace("/\]\]\>/", "", $text);
3575                 return $text;
3576         }
3577
3578         function load_filters($link, $feed, $owner_uid, $action_id = false) {
3579                 $filters = array();
3580
3581
3582                 if ($action_id) $ftype_query_part = "action_id = '$action_id' AND";
3583
3584                 $result = db_query($link, "SELECT reg_exp,
3585                         ttrss_filter_types.name AS name,
3586                         ttrss_filter_actions.name AS action,
3587                         inverse,
3588                         action_param,
3589                         filter_param
3590                         FROM ttrss_filters
3591                                 LEFT JOIN ttrss_feeds ON (ttrss_feeds.id = '$feed'),
3592                                 ttrss_filter_types,ttrss_filter_actions
3593                         WHERE
3594                                 enabled = true AND
3595                                 $ftype_query_part
3596                                 ttrss_filters.owner_uid = $owner_uid AND
3597                                 ttrss_filter_types.id = filter_type AND
3598                                 ttrss_filter_actions.id = action_id AND
3599                                 ((cat_filter = true AND ttrss_feeds.cat_id = ttrss_filters.cat_id) OR
3600                                 (cat_filter = true AND ttrss_feeds.cat_id IS NULL AND
3601                                         ttrss_filters.cat_id IS NULL) OR
3602                                 (cat_filter = false AND (feed_id IS NULL OR feed_id = '$feed')))
3603                         ORDER BY reg_exp");
3604
3605                 while ($line = db_fetch_assoc($result)) {
3606
3607                         if (!$filters[$line["name"]]) $filters[$line["name"]] = array();
3608                                 $filter["reg_exp"] = $line["reg_exp"];
3609                                 $filter["action"] = $line["action"];
3610                                 $filter["action_param"] = $line["action_param"];
3611                                 $filter["filter_param"] = $line["filter_param"];
3612                                 $filter["inverse"] = sql_bool_to_bool($line["inverse"]);
3613
3614                                 array_push($filters[$line["name"]], $filter);
3615                         }
3616
3617
3618                 return $filters;
3619         }
3620
3621         function get_score_pic($score) {
3622                 if ($score > 100) {
3623                         return "score_high.png";
3624                 } else if ($score > 0) {
3625                         return "score_half_high.png";
3626                 } else if ($score < -100) {
3627                         return "score_low.png";
3628                 } else if ($score < 0) {
3629                         return "score_half_low.png";
3630                 } else {
3631                         return "score_neutral.png";
3632                 }
3633         }
3634
3635         function feed_has_icon($id) {
3636                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3637         }
3638
3639         function init_connection($link) {
3640                 if ($link) {
3641
3642                         if (DB_TYPE == "pgsql") {
3643                                 pg_query($link, "set client_encoding = 'UTF-8'");
3644                                 pg_set_client_encoding("UNICODE");
3645                                 pg_query($link, "set datestyle = 'ISO, european'");
3646                                 pg_query($link, "set TIME ZONE 0");
3647                         } else {
3648                                 db_query($link, "SET time_zone = '+0:0'");
3649
3650                                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
3651                                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
3652                                 }
3653                         }
3654                         return true;
3655                 } else {
3656                         print "Unable to connect to database:" . db_last_error();
3657                         return false;
3658                 }
3659         }
3660
3661         /* function ccache_zero($link, $feed_id, $owner_uid) {
3662                 db_query($link, "UPDATE ttrss_counters_cache SET
3663                         value = 0, updated = NOW() WHERE
3664                         feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3665         } */
3666
3667         function ccache_zero_all($link, $owner_uid) {
3668                 db_query($link, "UPDATE ttrss_counters_cache SET
3669                         value = 0 WHERE owner_uid = '$owner_uid'");
3670
3671                 db_query($link, "UPDATE ttrss_cat_counters_cache SET
3672                         value = 0 WHERE owner_uid = '$owner_uid'");
3673         }
3674
3675         function ccache_remove($link, $feed_id, $owner_uid, $is_cat = false) {
3676
3677                 if (!$is_cat) {
3678                         $table = "ttrss_counters_cache";
3679                 } else {
3680                         $table = "ttrss_cat_counters_cache";
3681                 }
3682
3683                 db_query($link, "DELETE FROM $table WHERE
3684                         feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3685
3686         }
3687
3688         function ccache_update_all($link, $owner_uid) {
3689
3690                 if (get_pref($link, 'ENABLE_FEED_CATS', $owner_uid)) {
3691
3692                         $result = db_query($link, "SELECT feed_id FROM ttrss_cat_counters_cache
3693                                 WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
3694
3695                         while ($line = db_fetch_assoc($result)) {
3696                                 ccache_update($link, $line["feed_id"], $owner_uid, true);
3697                         }
3698
3699                         /* We have to manually include category 0 */
3700
3701                         ccache_update($link, 0, $owner_uid, true);
3702
3703                 } else {
3704                         $result = db_query($link, "SELECT feed_id FROM ttrss_counters_cache
3705                                 WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
3706
3707                         while ($line = db_fetch_assoc($result)) {
3708                                 print ccache_update($link, $line["feed_id"], $owner_uid);
3709
3710                         }
3711
3712                 }
3713         }
3714
3715         function ccache_find($link, $feed_id, $owner_uid, $is_cat = false,
3716                 $no_update = false) {
3717
3718                 if (!is_numeric($feed_id)) return;
3719
3720                 if (!$is_cat) {
3721                         $table = "ttrss_counters_cache";
3722                         if ($feed_id > 0) {
3723                                 $tmp_result = db_query($link, "SELECT owner_uid FROM ttrss_feeds
3724                                         WHERE id = '$feed_id'");
3725                                 $owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
3726                         }
3727                 } else {
3728                         $table = "ttrss_cat_counters_cache";
3729                 }
3730
3731                 if (DB_TYPE == "pgsql") {
3732                         $date_qpart = "updated > NOW() - INTERVAL '15 minutes'";
3733                 } else if (DB_TYPE == "mysql") {
3734                         $date_qpart = "updated > DATE_SUB(NOW(), INTERVAL 15 MINUTE)";
3735                 }
3736
3737                 $result = db_query($link, "SELECT value FROM $table
3738                         WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id'
3739                         LIMIT 1");
3740
3741                 if (db_num_rows($result) == 1) {
3742                         return db_fetch_result($result, 0, "value");
3743                 } else {
3744                         if ($no_update) {
3745                                 return -1;
3746                         } else {
3747                                 return ccache_update($link, $feed_id, $owner_uid, $is_cat);
3748                         }
3749                 }
3750
3751         }
3752
3753         function ccache_update($link, $feed_id, $owner_uid, $is_cat = false,
3754                 $update_pcat = true) {
3755
3756                 if (!is_numeric($feed_id)) return;
3757
3758                 if (!$is_cat && $feed_id > 0) {
3759                         $tmp_result = db_query($link, "SELECT owner_uid FROM ttrss_feeds
3760                                 WHERE id = '$feed_id'");
3761                         $owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
3762                 }
3763
3764                 $prev_unread = ccache_find($link, $feed_id, $owner_uid, $is_cat, true);
3765
3766                 /* When updating a label, all we need to do is recalculate feed counters
3767                  * because labels are not cached */
3768
3769                 if ($feed_id < 0) {
3770                         ccache_update_all($link, $owner_uid);
3771                         return;
3772                 }
3773
3774                 if (!$is_cat) {
3775                         $table = "ttrss_counters_cache";
3776                 } else {
3777                         $table = "ttrss_cat_counters_cache";
3778                 }
3779
3780                 if ($is_cat && $feed_id >= 0) {
3781                         if ($feed_id != 0) {
3782                                 $cat_qpart = "cat_id = '$feed_id'";
3783                         } else {
3784                                 $cat_qpart = "cat_id IS NULL";
3785                         }
3786
3787                         /* Recalculate counters for child feeds */
3788
3789                         $result = db_query($link, "SELECT id FROM ttrss_feeds
3790                                                 WHERE owner_uid = '$owner_uid' AND $cat_qpart");
3791
3792                         while ($line = db_fetch_assoc($result)) {
3793                                 ccache_update($link, $line["id"], $owner_uid, false, false);
3794                         }
3795
3796                         $result = db_query($link, "SELECT SUM(value) AS sv
3797                                 FROM ttrss_counters_cache, ttrss_feeds
3798                                 WHERE id = feed_id AND $cat_qpart AND
3799                                 ttrss_feeds.owner_uid = '$owner_uid'");
3800
3801                         $unread = (int) db_fetch_result($result, 0, "sv");
3802
3803                 } else {
3804                         $unread = (int) getFeedArticles($link, $feed_id, $is_cat, true, $owner_uid);
3805                 }
3806
3807                 db_query($link, "BEGIN");
3808
3809                 $result = db_query($link, "SELECT feed_id FROM $table
3810                         WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id' LIMIT 1");
3811
3812                 if (db_num_rows($result) == 1) {
3813                         db_query($link, "UPDATE $table SET
3814                                 value = '$unread', updated = NOW() WHERE
3815                                 feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3816
3817                 } else {
3818                         db_query($link, "INSERT INTO $table
3819                                 (feed_id, value, owner_uid, updated)
3820                                 VALUES
3821                                 ($feed_id, $unread, $owner_uid, NOW())");
3822                 }
3823
3824                 db_query($link, "COMMIT");
3825
3826                 if ($feed_id > 0 && $prev_unread != $unread) {
3827
3828                         if (!$is_cat) {
3829
3830                                 /* Update parent category */
3831
3832                                 if ($update_pcat) {
3833
3834                                         $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
3835                                                 WHERE owner_uid = '$owner_uid' AND id = '$feed_id'");
3836
3837                                         $cat_id = (int) db_fetch_result($result, 0, "cat_id");
3838
3839                                         ccache_update($link, $cat_id, $owner_uid, true);
3840
3841                                 }
3842                         }
3843                 } else if ($feed_id < 0) {
3844                         ccache_update_all($link, $owner_uid);
3845                 }
3846
3847                 return $unread;
3848         }
3849
3850         /* function ccache_cleanup($link, $owner_uid) {
3851
3852                 if (DB_TYPE == "pgsql") {
3853                         db_query($link, "DELETE FROM ttrss_counters_cache AS c1 WHERE
3854                                 (SELECT count(*) FROM ttrss_counters_cache AS c2
3855                                         WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
3856                                         AND owner_uid = '$owner_uid'");
3857
3858                         db_query($link, "DELETE FROM ttrss_cat_counters_cache AS c1 WHERE
3859                                 (SELECT count(*) FROM ttrss_cat_counters_cache AS c2
3860                                         WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
3861                                         AND owner_uid = '$owner_uid'");
3862                 } else {
3863                         db_query($link, "DELETE c1 FROM
3864                                         ttrss_counters_cache AS c1,
3865                                         ttrss_counters_cache AS c2
3866                                 WHERE
3867                                         c1.owner_uid = '$owner_uid' AND
3868                                         c1.owner_uid = c2.owner_uid AND
3869                                         c1.feed_id = c2.feed_id");
3870
3871                         db_query($link, "DELETE c1 FROM
3872                                         ttrss_cat_counters_cache AS c1,
3873                                         ttrss_cat_counters_cache AS c2
3874                                 WHERE
3875                                         c1.owner_uid = '$owner_uid' AND
3876                                         c1.owner_uid = c2.owner_uid AND
3877                                         c1.feed_id = c2.feed_id");
3878
3879                 }
3880         } */
3881
3882         function label_find_id($link, $label, $owner_uid) {
3883                 $result = db_query($link,
3884                         "SELECT id FROM ttrss_labels2 WHERE caption = '$label'
3885                                 AND owner_uid = '$owner_uid' LIMIT 1");
3886
3887                 if (db_num_rows($result) == 1) {
3888                         return db_fetch_result($result, 0, "id");
3889                 } else {
3890                         return 0;
3891                 }
3892         }
3893
3894         function get_article_labels($link, $id) {
3895                 $rv = array();
3896
3897
3898                 $result = db_query($link, "SELECT label_cache FROM
3899                         ttrss_user_entries WHERE ref_id = '$id' AND owner_uid = " .
3900                         $_SESSION["uid"]);
3901
3902                 $label_cache = db_fetch_result($result, 0, "label_cache");
3903
3904                 if ($label_cache) {
3905
3906                         $label_cache = json_decode($label_cache, true);
3907
3908                         if ($label_cache["no-labels"] == 1)
3909                                 return $rv;
3910                         else
3911                                 return $label_cache;
3912                 }
3913
3914                 $result = db_query($link,
3915                         "SELECT DISTINCT label_id,caption,fg_color,bg_color
3916                                 FROM ttrss_labels2, ttrss_user_labels2
3917                         WHERE id = label_id
3918                                 AND article_id = '$id'
3919                                 AND owner_uid = ".$_SESSION["uid"] . "
3920                         ORDER BY caption");
3921
3922                 while ($line = db_fetch_assoc($result)) {
3923                         $rk = array($line["label_id"], $line["caption"], $line["fg_color"],
3924                                 $line["bg_color"]);
3925                         array_push($rv, $rk);
3926                 }
3927
3928                 if (count($rv) > 0)
3929                         label_update_cache($link, $id, $rv);
3930                 else
3931                         label_update_cache($link, $id, array("no-labels" => 1));
3932
3933                 return $rv;
3934         }
3935
3936
3937         function label_find_caption($link, $label, $owner_uid) {
3938                 $result = db_query($link,
3939                         "SELECT caption FROM ttrss_labels2 WHERE id = '$label'
3940                                 AND owner_uid = '$owner_uid' LIMIT 1");
3941
3942                 if (db_num_rows($result) == 1) {
3943                         return db_fetch_result($result, 0, "caption");
3944                 } else {
3945                         return "";
3946                 }
3947         }
3948
3949         function label_update_cache($link, $id, $labels = false, $force = false) {
3950
3951                 if ($force)
3952                         label_clear_cache($link, $id);
3953
3954                 if (!$labels)
3955                         $labels = get_article_labels($link, $id);
3956
3957                 $labels = db_escape_string(json_encode($labels));
3958
3959                 db_query($link, "UPDATE ttrss_user_entries SET
3960                         label_cache = '$labels' WHERE ref_id = '$id'");
3961
3962         }
3963
3964         function label_clear_cache($link, $id) {
3965
3966                 db_query($link, "UPDATE ttrss_user_entries SET
3967                         label_cache = '' WHERE ref_id = '$id'");
3968
3969         }
3970
3971         function label_remove_article($link, $id, $label, $owner_uid) {
3972
3973                 $label_id = label_find_id($link, $label, $owner_uid);
3974
3975                 if (!$label_id) return;
3976
3977                 $result = db_query($link,
3978                         "DELETE FROM ttrss_user_labels2
3979                         WHERE
3980                                 label_id = '$label_id' AND
3981                                 article_id = '$id'");
3982
3983                 label_clear_cache($link, $id);
3984         }
3985
3986         function label_add_article($link, $id, $label, $owner_uid) {
3987
3988                 $label_id = label_find_id($link, $label, $owner_uid);
3989
3990                 if (!$label_id) return;
3991
3992                 $result = db_query($link,
3993                         "SELECT
3994                                 article_id FROM ttrss_labels2, ttrss_user_labels2
3995                         WHERE
3996                                 label_id = id AND
3997                                 label_id = '$label_id' AND
3998                                 article_id = '$id' AND owner_uid = '$owner_uid'
3999                         LIMIT 1");
4000
4001                 if (db_num_rows($result) == 0) {
4002                         db_query($link, "INSERT INTO ttrss_user_labels2
4003                                 (label_id, article_id) VALUES ('$label_id', '$id')");
4004                 }
4005
4006                 label_clear_cache($link, $id);
4007
4008         }
4009
4010         function label_remove($link, $id, $owner_uid) {
4011                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4012
4013                 db_query($link, "BEGIN");
4014
4015                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
4016                         WHERE id = '$id'");
4017
4018                 $caption = db_fetch_result($result, 0, "caption");
4019
4020                 $result = db_query($link, "DELETE FROM ttrss_labels2 WHERE id = '$id'
4021                         AND owner_uid = " . $owner_uid);
4022
4023                 if (db_affected_rows($link, $result) != 0 && $caption) {
4024
4025                         /* Remove access key for the label */
4026
4027                         $ext_id = -11 - $id;
4028
4029                         db_query($link, "DELETE FROM ttrss_access_keys WHERE
4030                                 feed_id = '$ext_id' AND owner_uid = $owner_uid");
4031
4032                         /* Disable filters that reference label being removed */
4033
4034                         db_query($link, "UPDATE ttrss_filters SET
4035                                 enabled = false WHERE action_param = '$caption'
4036                                         AND action_id = 7
4037                                         AND owner_uid = " . $owner_uid);
4038
4039                         /* Remove cached data */
4040
4041                         db_query($link, "UPDATE ttrss_user_entries SET label_cache = ''
4042                                 WHERE label_cache LIKE '%$caption%' AND owner_uid = " . $owner_uid);
4043
4044                 }
4045
4046                 db_query($link, "COMMIT");
4047         }
4048
4049         function label_create($link, $caption, $fg_color = '', $bg_color = '', $owner_uid) {
4050
4051                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
4052
4053                 db_query($link, "BEGIN");
4054
4055                 $result = false;
4056
4057                 $result = db_query($link, "SELECT id FROM ttrss_labels2
4058                         WHERE caption = '$caption' AND owner_uid = $owner_uid");
4059
4060                 if (db_num_rows($result) == 0) {
4061                         $result = db_query($link,
4062                                 "INSERT INTO ttrss_labels2 (caption,owner_uid,fg_color,bg_color)
4063                                         VALUES ('$caption', '$owner_uid', '$fg_color', '$bg_color')");
4064
4065                         $result = db_affected_rows($link, $result) != 0;
4066                 }
4067
4068                 db_query($link, "COMMIT");
4069
4070                 return $result;
4071         }
4072
4073         function format_tags_string($tags, $id) {
4074
4075                 $tags_str = "";
4076                 $tags_nolinks_str = "";
4077
4078                 $num_tags = 0;
4079
4080                 $tag_limit = 6;
4081
4082                 $formatted_tags = array();
4083
4084                 foreach ($tags as $tag) {
4085                         $num_tags++;
4086                         $tag_escaped = str_replace("'", "\\'", $tag);
4087
4088                         if (mb_strlen($tag) > 30) {
4089                                 $tag = truncate_string($tag, 30);
4090                         }
4091
4092                         $tag_str = "<a href=\"javascript:viewfeed('$tag_escaped')\">$tag</a>";
4093
4094                         array_push($formatted_tags, $tag_str);
4095
4096                         $tmp_tags_str = implode(", ", $formatted_tags);
4097
4098                         if ($num_tags == $tag_limit || mb_strlen($tmp_tags_str) > 150) {
4099                                 break;
4100                         }
4101                 }
4102
4103                 $tags_str = implode(", ", $formatted_tags);
4104
4105                 if ($num_tags < count($tags)) {
4106                         $tags_str .= ", &hellip;";
4107                 }
4108
4109                 if ($num_tags == 0) {
4110                         $tags_str = __("no tags");
4111                 }
4112
4113                 return $tags_str;
4114
4115         }
4116
4117         function format_article_labels($labels, $id) {
4118
4119                 $labels_str = "";
4120
4121                 foreach ($labels as $l) {
4122                         $labels_str .= sprintf("<span class='hlLabelRef'
4123                                 style='color : %s; background-color : %s'>%s</span>",
4124                                         $l[2], $l[3], $l[1]);
4125                         }
4126
4127                 return $labels_str;
4128
4129         }
4130
4131         function format_article_note($id, $note) {
4132
4133                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
4134                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
4135                         __('(edit note)')."</div>$note</div>";
4136
4137                 return $str;
4138         }
4139
4140         function toggle_collapse_cat($link, $cat_id, $mode) {
4141                 if ($cat_id > 0) {
4142                         $mode = bool_to_sql_bool($mode);
4143
4144                         db_query($link, "UPDATE ttrss_feed_categories SET
4145                                 collapsed = $mode WHERE id = '$cat_id' AND owner_uid = " .
4146                                 $_SESSION["uid"]);
4147                 } else {
4148                         $pref_name = '';
4149
4150                         switch ($cat_id) {
4151                         case -1:
4152                                 $pref_name = '_COLLAPSED_SPECIAL';
4153                                 break;
4154                         case -2:
4155                                 $pref_name = '_COLLAPSED_LABELS';
4156                                 break;
4157                         case 0:
4158                                 $pref_name = '_COLLAPSED_UNCAT';
4159                                 break;
4160                         }
4161
4162                         if ($pref_name) {
4163                                 if ($mode) {
4164                                         set_pref($link, $pref_name, 'true');
4165                                 } else {
4166                                         set_pref($link, $pref_name, 'false');
4167                                 }
4168                         }
4169                 }
4170         }
4171
4172         function remove_feed($link, $id, $owner_uid) {
4173
4174                 if ($id > 0) {
4175
4176                         /* save starred articles in Archived feed */
4177
4178                         db_query($link, "BEGIN");
4179
4180                         /* prepare feed if necessary */
4181
4182                         $result = db_query($link, "SELECT id FROM ttrss_archived_feeds
4183                                 WHERE id = '$id'");
4184
4185                         if (db_num_rows($result) == 0) {
4186                                 db_query($link, "INSERT INTO ttrss_archived_feeds
4187                                         (id, owner_uid, title, feed_url, site_url)
4188                                 SELECT id, owner_uid, title, feed_url, site_url from ttrss_feeds
4189                                 WHERE id = '$id'");
4190                         }
4191
4192                         db_query($link, "UPDATE ttrss_user_entries SET feed_id = NULL,
4193                                 orig_feed_id = '$id' WHERE feed_id = '$id' AND
4194                                         marked = true AND owner_uid = $owner_uid");
4195
4196                         /* Remove access key for the feed */
4197
4198                         db_query($link, "DELETE FROM ttrss_access_keys WHERE
4199                                 feed_id = '$id' AND owner_uid = $owner_uid");
4200
4201                         /* remove the feed */
4202
4203                         db_query($link, "DELETE FROM ttrss_feeds
4204                                         WHERE id = '$id' AND owner_uid = $owner_uid");
4205
4206                         db_query($link, "COMMIT");
4207
4208                         if (file_exists(ICONS_DIR . "/$id.ico")) {
4209                                 unlink(ICONS_DIR . "/$id.ico");
4210                         }
4211
4212                         ccache_remove($link, $id, $owner_uid);
4213
4214                 } else {
4215                         label_remove($link, -11-$id, $owner_uid);
4216                         ccache_remove($link, -11-$id, $owner_uid);
4217                 }
4218         }
4219
4220         function get_feed_category($link, $feed_cat, $parent_cat_id = false) {
4221                 if ($parent_cat_id) {
4222                         $parent_qpart = "parent_cat = '$parent_cat_id'";
4223                         $parent_insert = "'$parent_cat_id'";
4224                 } else {
4225                         $parent_qpart = "parent_cat IS NULL";
4226                         $parent_insert = "NULL";
4227                 }
4228
4229                 $result = db_query($link,
4230                         "SELECT id FROM ttrss_feed_categories
4231                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
4232
4233                 if (db_num_rows($result) == 0) {
4234                         return false;
4235                 } else {
4236                         return db_fetch_result($result, 0, "id");
4237                 }
4238         }
4239
4240         function add_feed_category($link, $feed_cat, $parent_cat_id = false) {
4241
4242                 if (!$feed_cat) return false;
4243
4244                 db_query($link, "BEGIN");
4245
4246                 if ($parent_cat_id) {
4247                         $parent_qpart = "parent_cat = '$parent_cat_id'";
4248                         $parent_insert = "'$parent_cat_id'";
4249                 } else {
4250                         $parent_qpart = "parent_cat IS NULL";
4251                         $parent_insert = "NULL";
4252                 }
4253
4254                 $result = db_query($link,
4255                         "SELECT id FROM ttrss_feed_categories
4256                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
4257
4258                 if (db_num_rows($result) == 0) {
4259
4260                         $result = db_query($link,
4261                                 "INSERT INTO ttrss_feed_categories (owner_uid,title,parent_cat)
4262                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat', $parent_insert)");
4263
4264                         db_query($link, "COMMIT");
4265
4266                         return true;
4267                 }
4268
4269                 return false;
4270         }
4271
4272         function remove_feed_category($link, $id, $owner_uid) {
4273
4274                 db_query($link, "DELETE FROM ttrss_feed_categories
4275                         WHERE id = '$id' AND owner_uid = $owner_uid");
4276
4277                 ccache_remove($link, $id, $owner_uid, true);
4278         }
4279
4280         function archive_article($link, $id, $owner_uid) {
4281                 db_query($link, "BEGIN");
4282
4283                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
4284                         WHERE ref_id = '$id' AND owner_uid = $owner_uid");
4285
4286                 if (db_num_rows($result) != 0) {
4287
4288                         /* prepare the archived table */
4289
4290                         $feed_id = (int) db_fetch_result($result, 0, "feed_id");
4291
4292                         if ($feed_id) {
4293                                 $result = db_query($link, "SELECT id FROM ttrss_archived_feeds
4294                                         WHERE id = '$feed_id'");
4295
4296                                 if (db_num_rows($result) == 0) {
4297                                         db_query($link, "INSERT INTO ttrss_archived_feeds
4298                                                 (id, owner_uid, title, feed_url, site_url)
4299                                         SELECT id, owner_uid, title, feed_url, site_url from ttrss_feeds
4300                                         WHERE id = '$feed_id'");
4301                                 }
4302
4303                                 db_query($link, "UPDATE ttrss_user_entries
4304                                         SET orig_feed_id = feed_id, feed_id = NULL
4305                                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
4306                         }
4307                 }
4308
4309                 db_query($link, "COMMIT");
4310         }
4311
4312         function getArticleFeed($link, $id) {
4313                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
4314                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
4315
4316                 if (db_num_rows($result) != 0) {
4317                         return db_fetch_result($result, 0, "feed_id");
4318                 } else {
4319                         return 0;
4320                 }
4321         }
4322
4323         /**
4324          * Fixes incomplete URLs by prepending "http://".
4325          * Also replaces feed:// with http://, and
4326          * prepends a trailing slash if the url is a domain name only.
4327          *
4328          * @param string $url Possibly incomplete URL
4329          *
4330          * @return string Fixed URL.
4331          */
4332         function fix_url($url) {
4333                 if (strpos($url, '://') === false) {
4334                         $url = 'http://' . $url;
4335                 } else if (substr($url, 0, 5) == 'feed:') {
4336                         $url = 'http:' . substr($url, 5);
4337                 }
4338
4339                 //prepend slash if the URL has no slash in it
4340                 // "http://www.example" -> "http://www.example/"
4341                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
4342                         $url .= '/';
4343                 }
4344
4345                 if ($url != "http:///")
4346                         return $url;
4347                 else
4348                         return '';
4349         }
4350
4351         function validate_feed_url($url) {
4352                 $parts = parse_url($url);
4353
4354                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
4355
4356         }
4357
4358         function get_article_enclosures($link, $id) {
4359
4360                 $query = "SELECT * FROM ttrss_enclosures
4361                         WHERE post_id = '$id' AND content_url != ''";
4362
4363                 $rv = array();
4364
4365                 $result = db_query($link, $query);
4366
4367                 if (db_num_rows($result) > 0) {
4368                         while ($line = db_fetch_assoc($result)) {
4369                                 array_push($rv, $line);
4370                         }
4371                 }
4372
4373                 return $rv;
4374         }
4375
4376         function api_get_feeds($link, $cat_id, $unread_only, $limit, $offset) {
4377
4378                         $feeds = array();
4379
4380                         /* Labels */
4381
4382                         if ($cat_id == -4 || $cat_id == -2) {
4383                                 $counters = getLabelCounters($link, true);
4384
4385                                 foreach (array_values($counters) as $cv) {
4386
4387                                         $unread = $cv["counter"];
4388
4389                                         if ($unread || !$unread_only) {
4390
4391                                                 $row = array(
4392                                                                 "id" => $cv["id"],
4393                                                                 "title" => $cv["description"],
4394                                                                 "unread" => $cv["counter"],
4395                                                                 "cat_id" => -2,
4396                                                         );
4397
4398                                                 array_push($feeds, $row);
4399                                         }
4400                                 }
4401                         }
4402
4403                         /* Virtual feeds */
4404
4405                         if ($cat_id == -4 || $cat_id == -1) {
4406                                 foreach (array(-1, -2, -3, -4, 0) as $i) {
4407                                         $unread = getFeedUnread($link, $i);
4408
4409                                         if ($unread || !$unread_only) {
4410                                                 $title = getFeedTitle($link, $i);
4411
4412                                                 $row = array(
4413                                                                 "id" => $i,
4414                                                                 "title" => $title,
4415                                                                 "unread" => $unread,
4416                                                                 "cat_id" => -1,
4417                                                         );
4418                                                 array_push($feeds, $row);
4419                                         }
4420
4421                                 }
4422                         }
4423
4424                         /* Real feeds */
4425
4426                         if ($limit) {
4427                                 $limit_qpart = "LIMIT $limit OFFSET $offset";
4428                         } else {
4429                                 $limit_qpart = "";
4430                         }
4431
4432                         if ($cat_id == -4 || $cat_id == -3) {
4433                                 $result = db_query($link, "SELECT
4434                                         id, feed_url, cat_id, title, order_id, ".
4435                                                 SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
4436                                                 FROM ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"] .
4437                                                 " ORDER BY cat_id, title " . $limit_qpart);
4438                         } else {
4439
4440                                 if ($cat_id)
4441                                         $cat_qpart = "cat_id = '$cat_id'";
4442                                 else
4443                                         $cat_qpart = "cat_id IS NULL";
4444
4445                                 $result = db_query($link, "SELECT
4446                                         id, feed_url, cat_id, title, order_id, ".
4447                                                 SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
4448                                                 FROM ttrss_feeds WHERE
4449                                                 $cat_qpart AND owner_uid = " . $_SESSION["uid"] .
4450                                                 " ORDER BY cat_id, title " . $limit_qpart);
4451                         }
4452
4453                         while ($line = db_fetch_assoc($result)) {
4454
4455                                 $unread = getFeedUnread($link, $line["id"]);
4456
4457                                 $has_icon = feed_has_icon($line['id']);
4458
4459                                 if ($unread || !$unread_only) {
4460
4461                                         $row = array(
4462                                                         "feed_url" => $line["feed_url"],
4463                                                         "title" => $line["title"],
4464                                                         "id" => (int)$line["id"],
4465                                                         "unread" => (int)$unread,
4466                                                         "has_icon" => $has_icon,
4467                                                         "cat_id" => (int)$line["cat_id"],
4468                                                         "last_updated" => strtotime($line["last_updated"]),
4469                                                         "order_id" => (int) $line["order_id"],
4470                                                 );
4471
4472                                         array_push($feeds, $row);
4473                                 }
4474                         }
4475
4476                 return $feeds;
4477         }
4478
4479         function api_get_headlines($link, $feed_id, $limit, $offset,
4480                                 $filter, $is_cat, $show_excerpt, $show_content, $view_mode, $order,
4481                                 $include_attachments, $since_id,
4482                                 $search = "", $search_mode = "", $match_on = "") {
4483
4484                         $qfh_ret = queryFeedHeadlines($link, $feed_id, $limit,
4485                                 $view_mode, $is_cat, $search, $search_mode, $match_on,
4486                                 $order, $offset, 0, false, $since_id);
4487
4488                         $result = $qfh_ret[0];
4489                         $feed_title = $qfh_ret[1];
4490
4491                         $headlines = array();
4492
4493                         while ($line = db_fetch_assoc($result)) {
4494                                 $is_updated = ($line["last_read"] == "" &&
4495                                         ($line["unread"] != "t" && $line["unread"] != "1"));
4496
4497                                 $tags = explode(",", $line["tag_cache"]);
4498                                 $labels = json_decode($line["label_cache"], true);
4499
4500                                 //if (!$tags) $tags = get_article_tags($link, $line["id"]);
4501                                 //if (!$labels) $labels = get_article_labels($link, $line["id"]);
4502
4503                                 $headline_row = array(
4504                                                 "id" => (int)$line["id"],
4505                                                 "unread" => sql_bool_to_bool($line["unread"]),
4506                                                 "marked" => sql_bool_to_bool($line["marked"]),
4507                                                 "published" => sql_bool_to_bool($line["published"]),
4508                                                 "updated" => strtotime($line["updated"]),
4509                                                 "is_updated" => $is_updated,
4510                                                 "title" => $line["title"],
4511                                                 "link" => $line["link"],
4512                                                 "feed_id" => $line["feed_id"],
4513                                                 "tags" => $tags,
4514                                         );
4515
4516                                         if ($include_attachments)
4517                                                 $headline_row['attachments'] = get_article_enclosures($link,
4518                                                         $line['id']);
4519
4520                                 if ($show_excerpt) {
4521                                         $excerpt = truncate_string(strip_tags($line["content_preview"]), 100);
4522                                         $headline_row["excerpt"] = $excerpt;
4523                                 }
4524
4525                                 if ($show_content) {
4526                                         $headline_row["content"] = $line["content_preview"];
4527                                 }
4528
4529                                 // unify label output to ease parsing
4530                                 if ($labels["no-labels"] == 1) $labels = array();
4531
4532                                 $headline_row["labels"] = $labels;
4533
4534                                 $headline_row["feed_title"] = $line["feed_title"];
4535
4536                                 array_push($headlines, $headline_row);
4537                         }
4538
4539                         return $headlines;
4540         }
4541
4542         function generate_error_feed($link, $error) {
4543                 $reply = array();
4544
4545                 $reply['headlines']['id'] = -6;
4546                 $reply['headlines']['is_cat'] = false;
4547
4548                 $reply['headlines']['toolbar'] = '';
4549                 $reply['headlines']['content'] = "<div class='whiteBox'>". $error . "</div>";
4550
4551                 $reply['headlines-info'] = array("count" => 0,
4552                         "vgroup_last_feed" => '',
4553                         "unread" => 0,
4554                         "disable_cache" => true);
4555
4556                 return $reply;
4557         }
4558
4559
4560         function generate_dashboard_feed($link) {
4561                 $reply = array();
4562
4563                 $reply['headlines']['id'] = -5;
4564                 $reply['headlines']['is_cat'] = false;
4565
4566                 $reply['headlines']['toolbar'] = '';
4567                 $reply['headlines']['content'] = "<div class='whiteBox'>".__('No feed selected.');
4568
4569                 $reply['headlines']['content'] .= "<p class=\"small\"><span class=\"insensitive\">";
4570
4571                 $result = db_query($link, "SELECT ".SUBSTRING_FOR_DATE."(MAX(last_updated), 1, 19) AS last_updated FROM ttrss_feeds
4572                         WHERE owner_uid = " . $_SESSION['uid']);
4573
4574                 $last_updated = db_fetch_result($result, 0, "last_updated");
4575                 $last_updated = make_local_datetime($link, $last_updated, false);
4576
4577                 $reply['headlines']['content'] .= sprintf(__("Feeds last updated at %s"), $last_updated);
4578
4579                 $result = db_query($link, "SELECT COUNT(id) AS num_errors
4580                         FROM ttrss_feeds WHERE last_error != '' AND owner_uid = ".$_SESSION["uid"]);
4581
4582                 $num_errors = db_fetch_result($result, 0, "num_errors");
4583
4584                 if ($num_errors > 0) {
4585                         $reply['headlines']['content'] .= "<br/>";
4586                         $reply['headlines']['content'] .= "<a class=\"insensitive\" href=\"#\" onclick=\"showFeedsWithErrors()\">".
4587                                 __('Some feeds have update errors (click for details)')."</a>";
4588                 }
4589                 $reply['headlines']['content'] .= "</span></p>";
4590
4591                 $reply['headlines-info'] = array("count" => 0,
4592                         "vgroup_last_feed" => '',
4593                         "unread" => 0,
4594                         "disable_cache" => true);
4595
4596                 return $reply;
4597         }
4598
4599         function save_email_address($link, $email) {
4600                 // FIXME: implement persistent storage of emails
4601
4602                 if (!$_SESSION['stored_emails'])
4603                         $_SESSION['stored_emails'] = array();
4604
4605                 if (!in_array($email, $_SESSION['stored_emails']))
4606                         array_push($_SESSION['stored_emails'], $email);
4607         }
4608
4609         function update_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
4610                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4611
4612                 $sql_is_cat = bool_to_sql_bool($is_cat);
4613
4614                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
4615                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
4616                         AND owner_uid = " . $owner_uid);
4617
4618                 if (db_num_rows($result) == 1) {
4619                         $key = db_escape_string(sha1(uniqid(rand(), true)));
4620
4621                         db_query($link, "UPDATE ttrss_access_keys SET access_key = '$key'
4622                                 WHERE feed_id = '$feed_id' AND is_cat = $sql_is_cat
4623                                 AND owner_uid = " . $owner_uid);
4624
4625                         return $key;
4626
4627                 } else {
4628                         return get_feed_access_key($link, $feed_id, $is_cat, $owner_uid);
4629                 }
4630         }
4631
4632         function get_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
4633
4634                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4635
4636                 $sql_is_cat = bool_to_sql_bool($is_cat);
4637
4638                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
4639                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
4640                         AND owner_uid = " . $owner_uid);
4641
4642                 if (db_num_rows($result) == 1) {
4643                         return db_fetch_result($result, 0, "access_key");
4644                 } else {
4645                         $key = db_escape_string(sha1(uniqid(rand(), true)));
4646
4647                         $result = db_query($link, "INSERT INTO ttrss_access_keys
4648                                 (access_key, feed_id, is_cat, owner_uid)
4649                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
4650
4651                         return $key;
4652                 }
4653                 return false;
4654         }
4655
4656         /**
4657          * Extracts RSS/Atom feed URLs from the given HTML URL.
4658          *
4659          * @param string $url HTML page URL
4660          *
4661          * @return array Array of feeds. Key is the full URL, value the title
4662          */
4663         function get_feeds_from_html($url, $login = false, $pass = false)
4664         {
4665                 $url     = fix_url($url);
4666                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
4667
4668                 libxml_use_internal_errors(true);
4669
4670                 $content = @fetch_file_contents($url, false, $login, $pass);
4671
4672                 $doc = new DOMDocument();
4673                 $doc->loadHTML($content);
4674                 $xpath = new DOMXPath($doc);
4675                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
4676                 $feedUrls = array();
4677                 foreach ($entries as $entry) {
4678                         if ($entry->hasAttribute('href')) {
4679                                 $title = $entry->getAttribute('title');
4680                                 if ($title == '') {
4681                                         $title = $entry->getAttribute('type');
4682                                 }
4683                                 $feedUrl = rewrite_relative_url(
4684                                         $baseUrl, $entry->getAttribute('href')
4685                                 );
4686                                 $feedUrls[$feedUrl] = $title;
4687                         }
4688                 }
4689                 return $feedUrls;
4690         }
4691
4692         /**
4693          * Checks if the content behind the given URL is a HTML file
4694          *
4695          * @param string $url URL to check
4696          *
4697          * @return boolean True if the URL contains HTML content
4698          */
4699         function url_is_html($url, $login = false, $pass = false) {
4700                 $content = substr(fetch_file_contents($url, false, $login, $pass), 0, 1000);
4701
4702                 if (stripos($content, '<html>') === false
4703                         && stripos($content, '<html ') === false
4704                 ) {
4705                         return false;
4706                 }
4707
4708                 return true;
4709         }
4710
4711         function print_label_select($link, $name, $value, $attributes = "") {
4712
4713                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
4714                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
4715
4716                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
4717                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
4718
4719                 while ($line = db_fetch_assoc($result)) {
4720
4721                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
4722
4723                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
4724                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
4725
4726                 }
4727
4728 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
4729
4730                 print "</select>";
4731
4732
4733         }
4734
4735         function format_article_enclosures($link, $id, $always_display_enclosures,
4736                                         $article_content) {
4737
4738                 $result = get_article_enclosures($link, $id);
4739                 $rv = '';
4740
4741                 if (count($result) > 0) {
4742
4743                         $entries_html = array();
4744                         $entries = array();
4745
4746                         foreach ($result as $line) {
4747
4748                                 $url = $line["content_url"];
4749                                 $ctype = $line["content_type"];
4750
4751                                 if (!$ctype) $ctype = __("unknown type");
4752
4753                                 $filename = substr($url, strrpos($url, "/")+1);
4754
4755 #                               $player = format_inline_player($link, $url, $ctype);
4756
4757 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
4758 #                                       $filename . " (" . $ctype . ")" . "</a>";
4759
4760                                 $entry = "<div onclick=\"window.open('".htmlspecialchars($url)."')\"
4761                                         dojoType=\"dijit.MenuItem\">$filename ($ctype)</div>";
4762
4763                                 array_push($entries_html, $entry);
4764
4765                                 $entry = array();
4766
4767                                 $entry["type"] = $ctype;
4768                                 $entry["filename"] = $filename;
4769                                 $entry["url"] = $url;
4770
4771                                 array_push($entries, $entry);
4772                         }
4773
4774                         if (!get_pref($link, "STRIP_IMAGES")) {
4775                                 if ($always_display_enclosures ||
4776                                                         !preg_match("/<img/i", $article_content)) {
4777
4778                                         foreach ($entries as $entry) {
4779
4780                                                 if (preg_match("/image/", $entry["type"]) ||
4781                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
4782
4783                                                                 $rv .= "<p><img
4784                                                                 alt=\"".htmlspecialchars($entry["filename"])."\"
4785                                                                 src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
4786
4787                                                 }
4788                                         }
4789                                 }
4790                         }
4791
4792                         $rv .= "<div dojoType=\"dijit.form.DropDownButton\">".
4793                                 "<span>" . __('Attachments')."</span>";
4794                         $rv .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
4795
4796                         foreach ($entries_html as $entry) { $rv .= $entry; };
4797
4798                         $rv .= "</div></div>";
4799                 }
4800
4801                 return $rv;
4802         }
4803
4804         function getLastArticleId($link) {
4805                 $result = db_query($link, "SELECT MAX(ref_id) AS id FROM ttrss_user_entries
4806                         WHERE owner_uid = " . $_SESSION["uid"]);
4807
4808                 if (db_num_rows($result) == 1) {
4809                         return db_fetch_result($result, 0, "id");
4810                 } else {
4811                         return -1;
4812                 }
4813         }
4814
4815         function build_url($parts) {
4816                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
4817         }
4818
4819         /**
4820          * Converts a (possibly) relative URL to a absolute one.
4821          *
4822          * @param string $url     Base URL (i.e. from where the document is)
4823          * @param string $rel_url Possibly relative URL in the document
4824          *
4825          * @return string Absolute URL
4826          */
4827         function rewrite_relative_url($url, $rel_url) {
4828                 if (strpos($rel_url, "magnet:") === 0) {
4829                         return $rel_url;
4830                 } else if (strpos($rel_url, "://") !== false) {
4831                         return $rel_url;
4832                 } else if (strpos($rel_url, "//") === 0) {
4833                         # protocol-relative URL (rare but they exist)
4834                         return $rel_url;
4835                 } else if (strpos($rel_url, "/") === 0)
4836                 {
4837                         $parts = parse_url($url);
4838                         $parts['path'] = $rel_url;
4839
4840                         return build_url($parts);
4841
4842                 } else {
4843                         $parts = parse_url($url);
4844                         if (!isset($parts['path'])) {
4845                                 $parts['path'] = '/';
4846                         }
4847                         $dir = $parts['path'];
4848                         if (substr($dir, -1) !== '/') {
4849                                 $dir = dirname($parts['path']);
4850                                 $dir !== '/' && $dir .= '/';
4851                         }
4852                         $parts['path'] = $dir . $rel_url;
4853
4854                         return build_url($parts);
4855                 }
4856         }
4857
4858         function sphinx_search($query, $offset = 0, $limit = 30) {
4859                 require_once 'lib/sphinxapi.php';
4860
4861                 $sphinxClient = new SphinxClient();
4862
4863                 $sphinxClient->SetServer('localhost', 9312);
4864                 $sphinxClient->SetConnectTimeout(1);
4865
4866                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
4867                         'feed_title' => 20));
4868
4869                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
4870                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
4871                 $sphinxClient->SetLimits($offset, $limit, 1000);
4872                 $sphinxClient->SetArrayResult(false);
4873                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
4874
4875                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
4876
4877                 $ids = array();
4878
4879                 if (is_array($result['matches'])) {
4880                         foreach (array_keys($result['matches']) as $int_id) {
4881                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
4882                                 array_push($ids, $ref_id);
4883                         }
4884                 }
4885
4886                 return $ids;
4887         }
4888
4889         function cleanup_tags($link, $days = 14, $limit = 1000) {
4890
4891                 if (DB_TYPE == "pgsql") {
4892                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
4893                 } else if (DB_TYPE == "mysql") {
4894                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
4895                 }
4896
4897                 $tags_deleted = 0;
4898
4899                 while ($limit > 0) {
4900                         $limit_part = 500;
4901
4902                         $query = "SELECT ttrss_tags.id AS id
4903                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
4904                                 WHERE post_int_id = int_id AND $interval_query AND
4905                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
4906
4907                         $result = db_query($link, $query);
4908
4909                         $ids = array();
4910
4911                         while ($line = db_fetch_assoc($result)) {
4912                                 array_push($ids, $line['id']);
4913                         }
4914
4915                         if (count($ids) > 0) {
4916                                 $ids = join(",", $ids);
4917                                 print ".";
4918
4919                                 $tmp_result = db_query($link, "DELETE FROM ttrss_tags WHERE id IN ($ids)");
4920                                 $tags_deleted += db_affected_rows($link, $tmp_result);
4921                         } else {
4922                                 break;
4923                         }
4924
4925                         $limit -= $limit_part;
4926                 }
4927
4928                 print "\n";
4929
4930                 return $tags_deleted;
4931         }
4932
4933         function print_user_stylesheet($link) {
4934                 $value = get_pref($link, 'USER_STYLESHEET');
4935
4936                 if ($value) {
4937                         print "<style type=\"text/css\">";
4938                         print str_replace("<br/>", "\n", $value);
4939                         print "</style>";
4940                 }
4941
4942         }
4943
4944 /*      function rewrite_urls($line) {
4945                 global $url_regex;
4946
4947                 $urls = null;
4948
4949                 $result = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
4950                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $line);
4951
4952                 return $result;
4953         } */
4954
4955         function rewrite_urls($html) {
4956                 libxml_use_internal_errors(true);
4957
4958                 $charset_hack = '<head>
4959                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
4960                 </head>';
4961
4962                 $doc = new DOMDocument();
4963                 $doc->loadHTML($charset_hack . $html);
4964                 $xpath = new DOMXPath($doc);
4965
4966                 $entries = $xpath->query('//*/text()');
4967
4968                 foreach ($entries as $entry) {
4969                         if (strstr($entry->wholeText, "://") !== false) {
4970                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
4971                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
4972
4973                                 if ($text != $entry->wholeText) {
4974                                         $cdoc = new DOMDocument();
4975                                         $cdoc->loadHTML($charset_hack . $text);
4976
4977
4978                                         foreach ($cdoc->childNodes as $cnode) {
4979                                                 $cnode = $doc->importNode($cnode, true);
4980
4981                                                 if ($cnode) {
4982                                                         $entry->parentNode->insertBefore($cnode);
4983                                                 }
4984                                         }
4985
4986                                         $entry->parentNode->removeChild($entry);
4987
4988                                 }
4989                         }
4990                 }
4991
4992                 $node = $doc->getElementsByTagName('body')->item(0);
4993
4994                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
4995                 if ($node)
4996                         return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
4997                 else
4998                         return $html;
4999         }
5000
5001         function filter_to_sql($filter) {
5002                 $query = "";
5003
5004                 $regexp_valid = preg_match('/' . $filter['reg_exp'] . '/',
5005                         $filter['reg_exp']) !== FALSE;
5006
5007                 if ($regexp_valid) {
5008
5009                         if (DB_TYPE == "pgsql")
5010                                 $reg_qpart = "~";
5011                         else
5012                                 $reg_qpart = "REGEXP";
5013
5014                         switch ($filter["type"]) {
5015                                 case "title":
5016                                         $query = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
5017                                                 $filter['reg_exp'] . "')";
5018                                         break;
5019                                 case "content":
5020                                         $query = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
5021                                                 $filter['reg_exp'] . "')";
5022                                         break;
5023                                 case "both":
5024                                         $query = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
5025                                                 $filter['reg_exp'] . "') OR LOWER(" .
5026                                                 "ttrss_entries.content) $reg_qpart LOWER('" . $filter['reg_exp'] . "')";
5027                                         break;
5028                                 case "tag":
5029                                         $query = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
5030                                                 $filter['reg_exp'] . "')";
5031                                         break;
5032                                 case "link":
5033                                         $query = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
5034                                                 $filter['reg_exp'] . "')";
5035                                         break;
5036                                 case "date":
5037
5038                                         if ($filter["filter_param"] == "before")
5039                                                 $cmp_qpart = "<";
5040                                         else
5041                                                 $cmp_qpart = ">=";
5042
5043                                         $timestamp = date("Y-m-d H:N:s", strtotime($filter["reg_exp"]));
5044                                         $query = "ttrss_entries.date_entered $cmp_qpart '$timestamp'";
5045                                         break;
5046                                 case "author":
5047                                         $query = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
5048                                                 $filter['reg_exp'] . "')";
5049                                         break;
5050                         }
5051
5052                         if ($filter["inverse"])
5053                                 $query = "NOT ($query)";
5054
5055                         if ($query) {
5056                                 if (DB_TYPE == "pgsql") {
5057                                         $query = " ($query) AND ttrss_entries.date_entered > NOW() - INTERVAL '14 days'";
5058                                 } else {
5059                                         $query = " ($query) AND ttrss_entries.date_entered > DATE_SUB(NOW(), INTERVAL 14 DAY)";
5060                                 }
5061                                 $query .= " AND ";
5062                         }
5063
5064                         return $query;
5065                 } else {
5066                         return false;
5067                 }
5068         }
5069
5070         // Status codes:
5071         // -1  - never connected
5072         // 0   - no data received
5073         // 1   - data received successfully
5074         // 2   - did not receive valid data
5075         // >10 - server error, code + 10 (e.g. 16 means server error 6)
5076
5077         function get_linked_feeds($link, $instance_id = false) {
5078                 if ($instance_id)
5079                         $instance_qpart = "id = '$instance_id' AND ";
5080                 else
5081                         $instance_qpart = "";
5082
5083                 if (DB_TYPE == "pgsql") {
5084                         $date_qpart = "last_connected < NOW() - INTERVAL '6 hours'";
5085                 } else {
5086                         $date_qpart = "last_connected < DATE_SUB(NOW(), INTERVAL 6 HOUR)";
5087                 }
5088
5089                 $result = db_query($link, "SELECT id, access_key, access_url FROM ttrss_linked_instances
5090                         WHERE $instance_qpart $date_qpart ORDER BY last_connected");
5091
5092                 while ($line = db_fetch_assoc($result)) {
5093                         $id = $line['id'];
5094
5095                         _debug("Updating: " . $line['access_url'] . " ($id)");
5096
5097                         $fetch_url = $line['access_url'] . '/public.php?op=fbexport';
5098                         $post_query = 'key=' . $line['access_key'];
5099
5100                         $feeds = fetch_file_contents($fetch_url, false, false, false, $post_query);
5101
5102                         // try doing it the old way
5103                         if (!$feeds) {
5104                                 $fetch_url = $line['access_url'] . '/backend.php?op=fbexport';
5105                                 $feeds = fetch_file_contents($fetch_url, false, false, false, $post_query);
5106                         }
5107
5108                         if ($feeds) {
5109                                 $feeds = json_decode($feeds, true);
5110
5111                                 if ($feeds) {
5112                                         if ($feeds['error']) {
5113                                                 $status = $feeds['error']['code'] + 10;
5114                                         } else {
5115                                                 $status = 1;
5116
5117                                                 if (count($feeds['feeds']) > 0) {
5118
5119                                                         db_query($link, "DELETE FROM ttrss_linked_feeds
5120                                                                 WHERE instance_id = '$id'");
5121
5122                                                         foreach ($feeds['feeds'] as $feed) {
5123                                                                 $feed_url = db_escape_string($feed['feed_url']);
5124                                                                 $title = db_escape_string($feed['title']);
5125                                                                 $subscribers = db_escape_string($feed['subscribers']);
5126                                                                 $site_url = db_escape_string($feed['site_url']);
5127
5128                                                                 db_query($link, "INSERT INTO ttrss_linked_feeds
5129                                                                         (feed_url, site_url, title, subscribers, instance_id, created, updated)
5130                                                                 VALUES
5131                                                                         ('$feed_url', '$site_url', '$title', '$subscribers', '$id', NOW(), NOW())");
5132                                                         }
5133                                                 } else {
5134                                                         // received 0 feeds, this might indicate that
5135                                                         // the instance on the other hand is rebuilding feedbrowser cache
5136                                                         // we will try again later
5137
5138                                                         // TODO: maybe perform expiration based on updated here?
5139                                                 }
5140
5141                                                 _debug("Processed " . count($feeds['feeds']) . " feeds.");
5142                                         }
5143                                 } else {
5144                                         $status = 2;
5145                                 }
5146
5147                         } else {
5148                                 $status = 0;
5149                         }
5150
5151                         _debug("Status: $status");
5152
5153                         db_query($link, "UPDATE ttrss_linked_instances SET
5154                                 last_status_out = '$status', last_connected = NOW() WHERE id = '$id'");
5155
5156                 }
5157         }
5158
5159         function make_feed_browser($link, $search, $limit, $mode = 1) {
5160
5161                 $owner_uid = $_SESSION["uid"];
5162                 $rv = '';
5163
5164                 if ($search) {
5165                         $search_qpart = "AND (UPPER(feed_url) LIKE UPPER('%$search%') OR
5166                                                 UPPER(title) LIKE UPPER('%$search%'))";
5167                 } else {
5168                         $search_qpart = "";
5169                 }
5170
5171                 if ($mode == 1) {
5172                         /* $result = db_query($link, "SELECT feed_url, subscribers FROM
5173                          ttrss_feedbrowser_cache WHERE (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
5174                         WHERE tf.feed_url = ttrss_feedbrowser_cache.feed_url
5175                         AND owner_uid = '$owner_uid') $search_qpart
5176                         ORDER BY subscribers DESC LIMIT $limit"); */
5177
5178                         $result = db_query($link, "SELECT feed_url, site_url, title, SUM(subscribers) AS subscribers FROM
5179                                                 (SELECT feed_url, site_url, title, subscribers FROM ttrss_feedbrowser_cache UNION ALL
5180                                                         SELECT feed_url, site_url, title, subscribers FROM ttrss_linked_feeds) AS qqq
5181                                                 WHERE
5182                                                         (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
5183                                                                 WHERE tf.feed_url = qqq.feed_url
5184                                                                         AND owner_uid = '$owner_uid') $search_qpart
5185                                                 GROUP BY feed_url, site_url, title ORDER BY subscribers DESC LIMIT $limit");
5186
5187                 } else if ($mode == 2) {
5188                         $result = db_query($link, "SELECT *,
5189                                                 (SELECT COUNT(*) FROM ttrss_user_entries WHERE
5190                                                         orig_feed_id = ttrss_archived_feeds.id) AS articles_archived
5191                                                 FROM
5192                                                         ttrss_archived_feeds
5193                                                 WHERE
5194                                                 (SELECT COUNT(*) FROM ttrss_feeds
5195                                                         WHERE ttrss_feeds.feed_url = ttrss_archived_feeds.feed_url AND
5196                                                                 owner_uid = '$owner_uid') = 0   AND
5197                                                 owner_uid = '$owner_uid' $search_qpart
5198                                                 ORDER BY id DESC LIMIT $limit");
5199                 }
5200
5201                 $feedctr = 0;
5202
5203                 while ($line = db_fetch_assoc($result)) {
5204
5205                         if ($mode == 1) {
5206
5207                                 $feed_url = htmlspecialchars($line["feed_url"]);
5208                                 $site_url = htmlspecialchars($line["site_url"]);
5209                                 $subscribers = $line["subscribers"];
5210
5211                                 $check_box = "<input onclick='toggleSelectListRow2(this)'
5212                                                         dojoType=\"dijit.form.CheckBox\"
5213                                                         type=\"checkbox\" \">";
5214
5215                                 $class = ($feedctr % 2) ? "even" : "odd";
5216
5217                                 $site_url = "<a target=\"_blank\"
5218                                                         href=\"$site_url\">
5219                                                         <span class=\"fb_feedTitle\">".
5220                                 htmlspecialchars($line["title"])."</span></a>";
5221
5222                                 $feed_url = "<a target=\"_blank\" class=\"fb_feedUrl\"
5223                                                         href=\"$feed_url\"><img src='images/feed-icon-12x12.png'
5224                                                         style='vertical-align : middle'></a>";
5225
5226                                 $rv .= "<li>$check_box $feed_url $site_url".
5227                                                         "&nbsp;<span class='subscribers'>($subscribers)</span></li>";
5228
5229                         } else if ($mode == 2) {
5230                                 $feed_url = htmlspecialchars($line["feed_url"]);
5231                                 $site_url = htmlspecialchars($line["site_url"]);
5232                                 $title = htmlspecialchars($line["title"]);
5233
5234                                 $check_box = "<input onclick='toggleSelectListRow2(this)' dojoType=\"dijit.form.CheckBox\"
5235                                                         type=\"checkbox\">";
5236
5237                                 $class = ($feedctr % 2) ? "even" : "odd";
5238
5239                                 if ($line['articles_archived'] > 0) {
5240                                         $archived = sprintf(__("%d archived articles"), $line['articles_archived']);
5241                                         $archived = "&nbsp;<span class='subscribers'>($archived)</span>";
5242                                 } else {
5243                                         $archived = '';
5244                                 }
5245
5246                                 $site_url = "<a target=\"_blank\"
5247                                                         href=\"$site_url\">
5248                                                         <span class=\"fb_feedTitle\">".
5249                                 htmlspecialchars($line["title"])."</span></a>";
5250
5251                                 $feed_url = "<a target=\"_blank\" class=\"fb_feedUrl\"
5252                                                         href=\"$feed_url\"><img src='images/feed-icon-12x12.png'
5253                                                         style='vertical-align : middle'></a>";
5254
5255
5256                                 $rv .= "<li id=\"FBROW-".$line["id"]."\">".
5257                                                         "$check_box $feed_url $site_url $archived</li>";
5258                         }
5259
5260                         ++$feedctr;
5261                 }
5262
5263                 if ($feedctr == 0) {
5264                         $rv .= "<li style=\"text-align : center\"><p>".__('No feeds found.')."</p></li>";
5265                 }
5266
5267                 return $rv;
5268         }
5269
5270         if (!function_exists('gzdecode')) {
5271                 function gzdecode($string) { // no support for 2nd argument
5272                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
5273                                 base64_encode($string));
5274                 }
5275         }
5276
5277         function perform_data_import($link, $filename, $owner_uid) {
5278
5279                 $num_imported = 0;
5280                 $num_processed = 0;
5281                 $num_feeds_created = 0;
5282
5283                 $doc = @DOMDocument::load($filename);
5284
5285                 if (!$doc) {
5286                         $contents = file_get_contents($filename);
5287
5288                         if ($contents) {
5289                                 $data = @gzuncompress($contents);
5290                         }
5291
5292                         if (!$data) {
5293                                 $data = @gzdecode($contents);
5294                         }
5295
5296                         if ($data)
5297                                 $doc = DOMDocument::loadXML($data);
5298                 }
5299
5300                 if ($doc) {
5301
5302                         $xpath = new DOMXpath($doc);
5303
5304                         $container = $doc->firstChild;
5305
5306                         if ($container && $container->hasAttribute('schema-version')) {
5307                                 $schema_version = $container->getAttribute('schema-version');
5308
5309                                 if ($schema_version != SCHEMA_VERSION) {
5310                                         print "<p>" .__("Could not import: incorrect schema version.") . "</p>";
5311                                         return;
5312                                 }
5313
5314                         } else {
5315                                 print "<p>" . __("Could not import: unrecognized document format.") . "</p>";
5316                                 return;
5317                         }
5318
5319                         $articles = $xpath->query("//article");
5320
5321                         foreach ($articles as $article_node) {
5322                                 if ($article_node->childNodes) {
5323
5324                                         $ref_id = 0;
5325
5326                                         $article = array();
5327
5328                                         foreach ($article_node->childNodes as $child) {
5329                                                 if ($child->nodeName != 'label_cache')
5330                                                         $article[$child->nodeName] = db_escape_string($child->nodeValue);
5331                                                 else
5332                                                         $article[$child->nodeName] = $child->nodeValue;
5333                                         }
5334
5335                                         //print_r($article);
5336
5337                                         if ($article['guid']) {
5338
5339                                                 ++$num_processed;
5340
5341                                                 //db_query($link, "BEGIN");
5342
5343                                                 //print 'GUID:' . $article['guid'] . "\n";
5344
5345                                                 $result = db_query($link, "SELECT id FROM ttrss_entries
5346                                                         WHERE guid = '".$article['guid']."'");
5347
5348                                                 if (db_num_rows($result) == 0) {
5349
5350                                                         $result = db_query($link,
5351                                                                 "INSERT INTO ttrss_entries
5352                                                                         (title,
5353                                                                         guid,
5354                                                                         link,
5355                                                                         updated,
5356                                                                         content,
5357                                                                         content_hash,
5358                                                                         no_orig_date,
5359                                                                         date_updated,
5360                                                                         date_entered,
5361                                                                         comments,
5362                                                                         num_comments,
5363                                                                         author)
5364                                                                 VALUES
5365                                                                         ('".$article['title']."',
5366                                                                         '".$article['guid']."',
5367                                                                         '".$article['link']."',
5368                                                                         '".$article['updated']."',
5369                                                                         '".$article['content']."',
5370                                                                         '".sha1($article['content'])."',
5371                                                                         false,
5372                                                                         NOW(),
5373                                                                         NOW(),
5374                                                                         '',
5375                                                                         '0',
5376                                                                         '')");
5377
5378                                                         $result = db_query($link, "SELECT id FROM ttrss_entries
5379                                                                 WHERE guid = '".$article['guid']."'");
5380
5381                                                         if (db_num_rows($result) != 0) {
5382                                                                 $ref_id = db_fetch_result($result, 0, "id");
5383                                                         }
5384
5385                                                 } else {
5386                                                         $ref_id = db_fetch_result($result, 0, "id");
5387                                                 }
5388
5389                                                 //print "Got ref ID: $ref_id\n";
5390
5391                                                 if ($ref_id) {
5392
5393                                                         $feed_url = $article['feed_url'];
5394                                                         $feed_title = $article['feed_title'];
5395
5396                                                         $feed = 'NULL';
5397
5398                                                         if ($feed_url && $feed_title) {
5399                                                                 $result = db_query($link, "SELECT id FROM ttrss_feeds
5400                                                                         WHERE feed_url = '$feed_url' AND owner_uid = '$owner_uid'");
5401
5402                                                                 if (db_num_rows($result) != 0) {
5403                                                                         $feed = db_fetch_result($result, 0, "id");
5404                                                                 } else {
5405                                                                         // try autocreating feed in Uncategorized...
5406
5407                                                                         $result = db_query($link, "INSERT INTO ttrss_feeds (owner_uid,
5408                                                                                 feed_url, title) VALUES ($owner_uid, '$feed_url', '$feed_title')");
5409
5410                                                                         $result = db_query($link, "SELECT id FROM ttrss_feeds
5411                                                                                 WHERE feed_url = '$feed_url' AND owner_uid = '$owner_uid'");
5412
5413                                                                         if (db_num_rows($result) != 0) {
5414                                                                                 ++$num_feeds_created;
5415
5416                                                                                 $feed = db_fetch_result($result, 0, "id");
5417                                                                         }
5418                                                                 }
5419                                                         }
5420
5421                                                         if ($feed != 'NULL')
5422                                                                 $feed_qpart = "feed_id = $feed";
5423                                                         else
5424                                                                 $feed_qpart = "feed_id IS NULL";
5425
5426                                                         //print "$ref_id / $feed / " . $article['title'] . "\n";
5427
5428                                                         $result = db_query($link, "SELECT int_id FROM ttrss_user_entries
5429                                                                 WHERE ref_id = '$ref_id' AND owner_uid = '$owner_uid' AND $feed_qpart");
5430
5431                                                         if (db_num_rows($result) == 0) {
5432
5433                                                                 $marked = bool_to_sql_bool(sql_bool_to_bool($article['marked']));
5434                                                                 $published = bool_to_sql_bool(sql_bool_to_bool($article['published']));
5435                                                                 $score = (int) $article['score'];
5436
5437                                                                 $tag_cache = $article['tag_cache'];
5438                                                                 $label_cache = db_escape_string($article['label_cache']);
5439                                                                 $note = $article['note'];
5440
5441                                                                 //print "Importing " . $article['title'] . "<br/>";
5442
5443                                                                 ++$num_imported;
5444
5445                                                                 $result = db_query($link,
5446                                                                         "INSERT INTO ttrss_user_entries
5447                                                                         (ref_id, owner_uid, feed_id, unread, last_read, marked,
5448                                                                                 published, score, tag_cache, label_cache, uuid, note)
5449                                                                         VALUES ($ref_id, $owner_uid, $feed, false,
5450                                                                                 NULL, $marked, $published, $score, '$tag_cache',
5451                                                                                         '$label_cache', '', '$note')");
5452
5453                                                                 $label_cache = json_decode($label_cache, true);
5454
5455                                                                 if (is_array($label_cache) && $label_cache["no-labels"] != 1) {
5456                                                                         foreach ($label_cache as $label) {
5457
5458                                                                                 label_create($link, $label[1],
5459                                                                                         $label[2], $label[3], $owner_uid);
5460
5461                                                                                 label_add_article($link, $ref_id, $label[1], $owner_uid);
5462
5463                                                                         }
5464                                                                 }
5465
5466                                                                 //db_query($link, "COMMIT");
5467                                                         }
5468                                                 }
5469                                         }
5470                                 }
5471                         }
5472
5473                         print "<p>" .
5474                                 T_sprintf("Finished: %d articles processed, %d imported, %d feeds created.",
5475                                         $num_processed, $num_imported, $num_feeds_created) .
5476                                         "</p>";
5477
5478                 } else {
5479
5480                         print "<p>" . __("Could not load XML document.") . "</p>";
5481
5482                 }
5483         }
5484
5485         function get_random_bytes($length) {
5486                 if (function_exists('openssl_random_pseudo_bytes')) {
5487                         return openssl_random_pseudo_bytes($length);
5488                 } else {
5489                         $output = "";
5490
5491                         for ($i = 0; $i < $length; $i++)
5492                                 $output .= chr(mt_rand(0, 255));
5493
5494                         return $output;
5495                 }
5496         }
5497
5498         function read_stdin() {
5499                 $fp = fopen("php://stdin", "r");
5500
5501                 if ($fp) {
5502                         $line = trim(fgets($fp));
5503                         fclose($fp);
5504                         return $line;
5505                 }
5506
5507                 return null;
5508         }
5509 ?>