include/functions.php

   1 <?php
   2         define('EXPECTED_CONFIG_VERSION', 26);
   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                 $root_id = false, $nest_level = 0) {
1892
1893                 if (!$root_id) {
1894                         print "<select id=\"$id\" name=\"$id\" $attributes>";
1895                         if ($include_all_feeds) {
1896                                 $is_selected = ("0" == $default_id) ? "selected=\"1\"" : "";
1897                                 print "<option $is_selected value=\"0\">".__('All feeds')."</option>";
1898                         }
1899                 }
1900
1901                 if (get_pref($link, 'ENABLE_FEED_CATS')) {
1902
1903                         if ($root_id)
1904                                 $parent_qpart = "parent_cat = '$root_id'";
1905                         else
1906                                 $parent_qpart = "parent_cat IS NULL";
1907
1908                         $result = db_query($link, "SELECT id,title,
1909                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1910                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1911                                 FROM ttrss_feed_categories
1912                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1913
1914                         while ($line = db_fetch_assoc($result)) {
1915
1916                                 for ($i = 0; $i < $nest_level; $i++)
1917                                         $line["title"] = " - " . $line["title"];
1918
1919                                 $is_selected = ("CAT:".$line["id"] == $default_id) ? "selected=\"1\"" : "";
1920
1921                                 printf("<option $is_selected value='CAT:%d'>%s</option>",
1922                                         $line["id"], htmlspecialchars($line["title"]));
1923
1924                                 if ($line["num_children"] > 0)
1925                                         print_feed_select($link, $id, $default_id, $attributes,
1926                                                 $include_all_feeds, $line["id"], $nest_level+1);
1927
1928                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1929                                         WHERE cat_id = '".$line["id"]."' AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1930
1931                                 while ($fline = db_fetch_assoc($feed_result)) {
1932                                         $is_selected = ($fline["id"] == $default_id) ? "selected=\"1\"" : "";
1933
1934                                         $fline["title"] = " + " . $fline["title"];
1935
1936                                         for ($i = 0; $i < $nest_level; $i++)
1937                                                 $fline["title"] = " - " . $fline["title"];
1938
1939                                         printf("<option $is_selected value='%d'>%s</option>",
1940                                                 $fline["id"], htmlspecialchars($fline["title"]));
1941                                 }
1942                         }
1943
1944                         if (!$root_id) {
1945                                 $is_selected = ($default_id == "CAT:0") ? "selected=\"1\"" : "";
1946
1947                                 printf("<option $is_selected value='CAT:0'>%s</option>",
1948                                         __("Uncategorized"));
1949
1950                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1951                                         WHERE cat_id IS NULL AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1952
1953                                 while ($fline = db_fetch_assoc($feed_result)) {
1954                                         $is_selected = ($fline["id"] == $default_id && !$default_is_cat) ? "selected=\"1\"" : "";
1955
1956                                         $fline["title"] = " + " . $fline["title"];
1957
1958                                         for ($i = 0; $i < $nest_level; $i++)
1959                                                 $fline["title"] = " - " . $fline["title"];
1960
1961                                         printf("<option $is_selected value='%d'>%s</option>",
1962                                                 $fline["id"], htmlspecialchars($fline["title"]));
1963                                 }
1964                         }
1965
1966                 } else {
1967                         $result = db_query($link, "SELECT id,title FROM ttrss_feeds
1968                                 WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
1969
1970                         while ($line = db_fetch_assoc($result)) {
1971
1972                                 $is_selected = ($line["id"] == $default_id) ? "selected=\"1\"" : "";
1973
1974                                 printf("<option $is_selected value='%d'>%s</option>",
1975                                         $line["id"], htmlspecialchars($line["title"]));
1976                         }
1977                 }
1978
1979                 if (!$root_id) {
1980                         print "</select>";
1981                 }
1982         }
1983
1984         function print_feed_cat_select($link, $id, $default_id,
1985                 $attributes, $include_all_cats = true, $root_id = false, $nest_level = 0) {
1986
1987                         if (!$root_id) {
1988                                         print "<select id=\"$id\" name=\"$id\" default=\"$default_id\" onchange=\"catSelectOnChange(this)\" $attributes>";
1989                         }
1990
1991                         if ($root_id)
1992                                 $parent_qpart = "parent_cat = '$root_id'";
1993                         else
1994                                 $parent_qpart = "parent_cat IS NULL";
1995
1996                         $result = db_query($link, "SELECT id,title,
1997                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1998                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1999                                 FROM ttrss_feed_categories
2000                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
2001
2002                         while ($line = db_fetch_assoc($result)) {
2003                                 if ($line["id"] == $default_id) {
2004                                         $is_selected = "selected=\"1\"";
2005                                 } else {
2006                                         $is_selected = "";
2007                                 }
2008
2009                                 for ($i = 0; $i < $nest_level; $i++)
2010                                         $line["title"] = " - " . $line["title"];
2011
2012                                 if ($line["title"])
2013                                         printf("<option $is_selected value='%d'>%s</option>",
2014                                                 $line["id"], htmlspecialchars($line["title"]));
2015
2016                                 if ($line["num_children"] > 0)
2017                                         print_feed_cat_select($link, $id, $default_id, $attributes,
2018                                                 $include_all_cats, $line["id"], $nest_level+1);
2019                         }
2020
2021                         if (!$root_id) {
2022                                 if ($include_all_cats) {
2023                                         if (db_num_rows($result) > 0) {
2024                                                 print "<option disabled=\"1\">--------</option>";
2025                                         }
2026
2027                                         if ($default_id == 0) {
2028                                                 $is_selected = "selected=\"1\"";
2029                                         } else {
2030                                                 $is_selected = "";
2031                                         }
2032
2033                                         print "<option $is_selected value=\"0\">".__('Uncategorized')."</option>";
2034                                 }
2035                                 print "</select>";
2036                         }
2037                 }
2038
2039         function checkbox_to_sql_bool($val) {
2040                 return ($val == "on") ? "true" : "false";
2041         }
2042
2043         function getFeedCatTitle($link, $id) {
2044                 if ($id == -1) {
2045                         return __("Special");
2046                 } else if ($id < -10) {
2047                         return __("Labels");
2048                 } else if ($id > 0) {
2049                         $result = db_query($link, "SELECT ttrss_feed_categories.title
2050                                 FROM ttrss_feeds, ttrss_feed_categories WHERE ttrss_feeds.id = '$id' AND
2051                                         cat_id = ttrss_feed_categories.id");
2052                         if (db_num_rows($result) == 1) {
2053                                 return db_fetch_result($result, 0, "title");
2054                         } else {
2055                                 return __("Uncategorized");
2056                         }
2057                 } else {
2058                         return "getFeedCatTitle($id) failed";
2059                 }
2060
2061         }
2062
2063         function getFeedIcon($id) {
2064                 switch ($id) {
2065                 case 0:
2066                         return "images/archive.png";
2067                         break;
2068                 case -1:
2069                         return "images/mark_set.png";
2070                         break;
2071                 case -2:
2072                         return "images/pub_set.png";
2073                         break;
2074                 case -3:
2075                         return "images/fresh.png";
2076                         break;
2077                 case -4:
2078                         return "images/tag.png";
2079                         break;
2080                 default:
2081                         if ($id < -10) {
2082                                 return "images/label.png";
2083                         } else {
2084                                 if (file_exists(ICONS_DIR . "/$id.ico"))
2085                                         return ICONS_URL . "/$id.ico";
2086                         }
2087                         break;
2088                 }
2089         }
2090
2091         function getFeedTitle($link, $id) {
2092                 if ($id == -1) {
2093                         return __("Starred articles");
2094                 } else if ($id == -2) {
2095                         return __("Published articles");
2096                 } else if ($id == -3) {
2097                         return __("Fresh articles");
2098                 } else if ($id == -4) {
2099                         return __("All articles");
2100                 } else if ($id === 0 || $id === "0") {
2101                         return __("Archived articles");
2102                 } else if ($id < -10) {
2103                         $label_id = -$id - 11;
2104                         $result = db_query($link, "SELECT caption FROM ttrss_labels2 WHERE id = '$label_id'");
2105                         if (db_num_rows($result) == 1) {
2106                                 return db_fetch_result($result, 0, "caption");
2107                         } else {
2108                                 return "Unknown label ($label_id)";
2109                         }
2110
2111                 } else if (is_numeric($id) && $id > 0) {
2112                         $result = db_query($link, "SELECT title FROM ttrss_feeds WHERE id = '$id'");
2113                         if (db_num_rows($result) == 1) {
2114                                 return db_fetch_result($result, 0, "title");
2115                         } else {
2116                                 return "Unknown feed ($id)";
2117                         }
2118                 } else {
2119                         return $id;
2120                 }
2121         }
2122
2123         function make_init_params($link) {
2124                 $params = array();
2125
2126                 $params["theme"] = get_user_theme($link);
2127                 $params["theme_options"] = get_user_theme_options($link);
2128
2129                 $params["sign_progress"] = theme_image($link, "images/indicator_white.gif");
2130                 $params["sign_progress_tiny"] = theme_image($link, "images/indicator_tiny.gif");
2131                 $params["sign_excl"] = theme_image($link, "images/sign_excl.png");
2132                 $params["sign_info"] = theme_image($link, "images/sign_info.png");
2133
2134                 foreach (array("ON_CATCHUP_SHOW_NEXT_FEED", "HIDE_READ_FEEDS",
2135                         "ENABLE_FEED_CATS", "FEEDS_SORT_BY_UNREAD", "CONFIRM_FEED_CATCHUP",
2136                         "CDM_AUTO_CATCHUP", "FRESH_ARTICLE_MAX_AGE", "DEFAULT_ARTICLE_LIMIT",
2137                         "HIDE_READ_SHOWS_SPECIAL", "COMBINED_DISPLAY_MODE") as $param) {
2138
2139                                  $params[strtolower($param)] = (int) get_pref($link, $param);
2140                  }
2141
2142                 $params["icons_url"] = ICONS_URL;
2143                 $params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
2144                 $params["default_include_children"] = get_pref($link, "_DEFAULT_INCLUDE_CHILDREN");
2145                 $params["default_view_mode"] = get_pref($link, "_DEFAULT_VIEW_MODE");
2146                 $params["default_view_limit"] = (int) get_pref($link, "_DEFAULT_VIEW_LIMIT");
2147                 $params["default_view_order_by"] = get_pref($link, "_DEFAULT_VIEW_ORDER_BY");
2148                 $params["bw_limit"] = (int) $_SESSION["bw_limit"];
2149
2150                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2151                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2152
2153                 $max_feed_id = db_fetch_result($result, 0, "mid");
2154                 $num_feeds = db_fetch_result($result, 0, "nf");
2155
2156                 $params["max_feed_id"] = (int) $max_feed_id;
2157                 $params["num_feeds"] = (int) $num_feeds;
2158
2159                 $params["collapsed_feedlist"] = (int) get_pref($link, "_COLLAPSED_FEEDLIST");
2160
2161                 $params["csrf_token"] = $_SESSION["csrf_token"];
2162
2163                 return $params;
2164         }
2165
2166         function make_runtime_info($link) {
2167                 $data = array();
2168
2169                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2170                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2171
2172                 $max_feed_id = db_fetch_result($result, 0, "mid");
2173                 $num_feeds = db_fetch_result($result, 0, "nf");
2174
2175                 $data["max_feed_id"] = (int) $max_feed_id;
2176                 $data["num_feeds"] = (int) $num_feeds;
2177
2178                 $data['last_article_id'] = getLastArticleId($link);
2179                 $data['cdm_expanded'] = get_pref($link, 'CDM_EXPANDED');
2180
2181                 if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
2182
2183                         $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
2184
2185                         if (time() - $_SESSION["daemon_stamp_check"] > 30) {
2186
2187                                 $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
2188
2189                                 if ($stamp) {
2190                                         $stamp_delta = time() - $stamp;
2191
2192                                         if ($stamp_delta > 1800) {
2193                                                 $stamp_check = 0;
2194                                         } else {
2195                                                 $stamp_check = 1;
2196                                                 $_SESSION["daemon_stamp_check"] = time();
2197                                         }
2198
2199                                         $data['daemon_stamp_ok'] = $stamp_check;
2200
2201                                         $stamp_fmt = date("Y.m.d, G:i", $stamp);
2202
2203                                         $data['daemon_stamp'] = $stamp_fmt;
2204                                 }
2205                         }
2206                 }
2207
2208                 if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
2209                                 $new_version_details = @check_for_update($link);
2210
2211                                 $data['new_version_available'] = (int) ($new_version_details != false);
2212
2213                                 $_SESSION["last_version_check"] = time();
2214                                 $_SESSION["version_data"] = $new_version_details;
2215                 }
2216
2217                 return $data;
2218         }
2219
2220         function search_to_sql($link, $search, $match_on) {
2221
2222                 $search_query_part = "";
2223
2224                 $keywords = explode(" ", $search);
2225                 $query_keywords = array();
2226
2227                 foreach ($keywords as $k) {
2228                         if (strpos($k, "-") === 0) {
2229                                 $k = substr($k, 1);
2230                                 $not = "NOT";
2231                         } else {
2232                                 $not = "";
2233                         }
2234
2235                         $commandpair = explode(":", mb_strtolower($k), 2);
2236
2237                         if ($commandpair[0] == "note" && $commandpair[1]) {
2238
2239                                 if ($commandpair[1] == "true")
2240                                         array_push($query_keywords, "($not (note IS NOT NULL AND note != ''))");
2241                                 else
2242                                         array_push($query_keywords, "($not (note IS NULL OR note = ''))");
2243
2244                         } else if ($commandpair[0] == "star" && $commandpair[1]) {
2245
2246                                 if ($commandpair[1] == "true")
2247                                         array_push($query_keywords, "($not (marked = true))");
2248                                 else
2249                                         array_push($query_keywords, "($not (marked = false))");
2250
2251                         } else if ($commandpair[0] == "pub" && $commandpair[1]) {
2252
2253                                 if ($commandpair[1] == "true")
2254                                         array_push($query_keywords, "($not (published = true))");
2255                                 else
2256                                         array_push($query_keywords, "($not (published = false))");
2257
2258                         } else if (strpos($k, "@") === 0) {
2259
2260                                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $_SESSION['uid']);
2261                                 $orig_ts = strtotime(substr($k, 1));
2262                                 $k = date("Y-m-d", convert_timestamp($orig_ts, $user_tz_string, 'UTC'));
2263
2264                                 //$k = date("Y-m-d", strtotime(substr($k, 1)));
2265
2266                                 array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
2267                         } else if ($match_on == "both") {
2268                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2269                                                 OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2270                         } else if ($match_on == "title") {
2271                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%'))");
2272                         } else if ($match_on == "content") {
2273                                 array_push($query_keywords, "(UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2274                         }
2275                 }
2276
2277                 $search_query_part = implode("AND", $query_keywords);
2278
2279                 return $search_query_part;
2280         }
2281
2282         function getChildCategories($link, $cat, $owner_uid) {
2283                 $rv = array();
2284
2285                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories
2286                         WHERE parent_cat = '$cat' AND owner_uid = $owner_uid");
2287
2288                 while ($line = db_fetch_assoc($result)) {
2289                         array_push($rv, $line["id"]);
2290                         $rv = array_merge($rv, getChildCategories($link, $line["id"], $owner_uid));
2291                 }
2292
2293                 return $rv;
2294         }
2295
2296         function queryFeedHeadlines($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, $include_children = false) {
2297
2298                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2299
2300                 $ext_tables_part = "";
2301
2302                         if ($search) {
2303
2304                                 if (SPHINX_ENABLED) {
2305                                         $ids = join(",", @sphinx_search($search, 0, 500));
2306
2307                                         if ($ids)
2308                                                 $search_query_part = "ref_id IN ($ids) AND ";
2309                                         else
2310                                                 $search_query_part = "ref_id = -1 AND ";
2311
2312                                 } else {
2313                                         $search_query_part = search_to_sql($link, $search, $match_on);
2314                                         $search_query_part .= " AND ";
2315                                 }
2316
2317                         } else {
2318                                 $search_query_part = "";
2319                         }
2320
2321                         if ($filter) {
2322                                 $filter_query_part = filter_to_sql($filter);
2323                         } else {
2324                                 $filter_query_part = "";
2325                         }
2326
2327                         if ($since_id) {
2328                                 $since_id_part = "ttrss_entries.id > $since_id AND ";
2329                         } else {
2330                                 $since_id_part = "";
2331                         }
2332
2333                         $view_query_part = "";
2334
2335                         if ($view_mode == "adaptive" || $view_query_part == "noscores") {
2336                                 if ($search) {
2337                                         $view_query_part = " ";
2338                                 } else if ($feed != -1) {
2339                                         $unread = getFeedUnread($link, $feed, $cat_view);
2340
2341                                         if ($cat_view && $feed > 0 && $include_children)
2342                                                 $unread += getCategoryChildrenUnread($link, $feed);
2343
2344                                         if ($unread > 0) {
2345                                                 $view_query_part = " unread = true AND ";
2346                                         }
2347                                 }
2348                         }
2349
2350                         if ($view_mode == "marked") {
2351                                 $view_query_part = " marked = true AND ";
2352                         }
2353
2354                         if ($view_mode == "published") {
2355                                 $view_query_part = " published = true AND ";
2356                         }
2357
2358                         if ($view_mode == "unread") {
2359                                 $view_query_part = " unread = true AND ";
2360                         }
2361
2362                         if ($view_mode == "updated") {
2363                                 $view_query_part = " (last_read is null and unread = false) AND ";
2364                         }
2365
2366                         if ($limit > 0) {
2367                                 $limit_query_part = "LIMIT " . $limit;
2368                         }
2369
2370                         $vfeed_query_part = "";
2371
2372                         // override query strategy and enable feed display when searching globally
2373                         if ($search && $search_mode == "all_feeds") {
2374                                 $query_strategy_part = "ttrss_entries.id > 0";
2375                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2376                         /* tags */
2377                         } else if (preg_match("/^-?[0-9][0-9]*$/", $feed) == false) {
2378                                 $query_strategy_part = "ttrss_entries.id > 0";
2379                                 $vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
2380                                         id = feed_id) as feed_title,";
2381                         } else if ($feed > 0 && $search && $search_mode == "this_cat") {
2382
2383                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2384
2385                                 $tmp_result = false;
2386
2387                                 if ($cat_view) {
2388                                         $tmp_result = db_query($link, "SELECT id
2389                                                 FROM ttrss_feeds WHERE cat_id = '$feed'");
2390                                 } else {
2391                                         $tmp_result = db_query($link, "SELECT id
2392                                                 FROM ttrss_feeds WHERE cat_id = (SELECT cat_id FROM ttrss_feeds
2393                                                         WHERE id = '$feed') AND id != '$feed'");
2394                                 }
2395
2396                                 $cat_siblings = array();
2397
2398                                 if (db_num_rows($tmp_result) > 0) {
2399                                         while ($p = db_fetch_assoc($tmp_result)) {
2400                                                 array_push($cat_siblings, "feed_id = " . $p["id"]);
2401                                         }
2402
2403                                         $query_strategy_part = sprintf("(feed_id = %d OR %s)",
2404                                                 $feed, implode(" OR ", $cat_siblings));
2405
2406                                 } else {
2407                                         $query_strategy_part = "ttrss_entries.id > 0";
2408                                 }
2409
2410                         } else if ($feed > 0) {
2411
2412                                 if ($cat_view) {
2413
2414                                         if ($feed > 0) {
2415                                                 if ($include_children) {
2416                                                         # sub-cats
2417                                                         $subcats = getChildCategories($link, $feed, $owner_uid);
2418
2419                                                         if (count($subcats) == 0) {
2420                                                                 $query_strategy_part = "cat_id = '$feed'";
2421                                                         } else {
2422                                                                 array_push($subcats, $feed);
2423                                                                 $query_strategy_part = "cat_id IN (".
2424                                                                         implode(",", $subcats).")";
2425                                                         }
2426                                                 } else {
2427                                                         $query_strategy_part = "cat_id = '$feed'";
2428                                                 }
2429
2430                                         } else {
2431                                                 $query_strategy_part = "cat_id IS NULL";
2432                                         }
2433
2434                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2435
2436                                 } else {
2437                                         $query_strategy_part = "feed_id = '$feed'";
2438                                 }
2439                         } else if ($feed == 0 && !$cat_view) { // archive virtual feed
2440                                 $query_strategy_part = "feed_id IS NULL";
2441                         } else if ($feed == 0 && $cat_view) { // uncategorized
2442                                 $query_strategy_part = "cat_id IS NULL AND feed_id IS NOT NULL";
2443                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2444                         } else if ($feed == -1) { // starred virtual feed
2445                                 $query_strategy_part = "marked = true";
2446                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2447                         } else if ($feed == -2) { // published virtual feed OR labels category
2448
2449                                 if (!$cat_view) {
2450                                         $query_strategy_part = "published = true";
2451                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2452                                 } else {
2453                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2454
2455                                         $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2456
2457                                         $query_strategy_part = "ttrss_labels2.id = ttrss_user_labels2.label_id AND
2458                                                 ttrss_user_labels2.article_id = ref_id";
2459
2460                                 }
2461
2462                         } else if ($feed == -3) { // fresh virtual feed
2463                                 $query_strategy_part = "unread = true AND score >= 0";
2464
2465                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
2466
2467                                 if (DB_TYPE == "pgsql") {
2468                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
2469                                 } else {
2470                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
2471                                 }
2472
2473                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2474                         } else if ($feed == -4) { // all articles virtual feed
2475                                 $query_strategy_part = "true";
2476                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2477                         } else if ($feed <= -10) { // labels
2478                                 $label_id = -$feed - 11;
2479
2480                                 $query_strategy_part = "label_id = '$label_id' AND
2481                                         ttrss_labels2.id = ttrss_user_labels2.label_id AND
2482                                         ttrss_user_labels2.article_id = ref_id";
2483
2484                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2485                                 $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2486
2487                         } else {
2488                                 $query_strategy_part = "id > 0"; // dumb
2489                         }
2490
2491                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
2492                                 $date_sort_field = "updated";
2493                         } else {
2494                                 $date_sort_field = "date_entered";
2495                         }
2496
2497                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
2498                                 $order_by = "$date_sort_field";
2499                         } else {
2500                                 $order_by = "$date_sort_field DESC";
2501                         }
2502
2503                         if ($view_mode != "noscores") {
2504                                 $order_by = "score DESC, $order_by";
2505                         }
2506
2507                         if ($override_order) {
2508                                 $order_by = $override_order;
2509                         }
2510
2511                         $feed_title = "";
2512
2513                         if ($search) {
2514                                 $feed_title = "Search results";
2515                         } else {
2516                                 if ($cat_view) {
2517                                         $feed_title = getCategoryTitle($link, $feed);
2518                                 } else {
2519                                         if (is_numeric($feed) && $feed > 0) {
2520                                                 $result = db_query($link, "SELECT title,site_url,last_error
2521                                                         FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = $owner_uid");
2522
2523                                                 $feed_title = db_fetch_result($result, 0, "title");
2524                                                 $feed_site_url = db_fetch_result($result, 0, "site_url");
2525                                                 $last_error = db_fetch_result($result, 0, "last_error");
2526                                         } else {
2527                                                 $feed_title = getFeedTitle($link, $feed);
2528                                         }
2529                                 }
2530                         }
2531
2532                         $content_query_part = "content as content_preview,";
2533
2534                         if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
2535
2536                                 if ($feed >= 0) {
2537                                         $feed_kind = "Feeds";
2538                                 } else {
2539                                         $feed_kind = "Labels";
2540                                 }
2541
2542                                 if ($limit_query_part) {
2543                                         $offset_query_part = "OFFSET $offset";
2544                                 }
2545
2546                                 if ($vfeed_query_part && get_pref($link, 'VFEED_GROUP_BY_FEED', $owner_uid)) {
2547                                         if (!$override_order) {
2548                                                 $order_by = "ttrss_feeds.title, $order_by";
2549                                         }
2550                                 }
2551
2552                                 if ($feed != "0") {
2553                                         $from_qpart = "ttrss_entries,ttrss_user_entries,ttrss_feeds$ext_tables_part";
2554                                         $feed_check_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
2555
2556                                 } else {
2557                                         $from_qpart = "ttrss_entries,ttrss_user_entries$ext_tables_part
2558                                                 LEFT JOIN ttrss_feeds ON (feed_id = ttrss_feeds.id)";
2559                                 }
2560
2561                                 $query = "SELECT DISTINCT
2562                                                 date_entered,
2563                                                 guid,
2564                                                 ttrss_entries.id,ttrss_entries.title,
2565                                                 updated,
2566                                                 label_cache,
2567                                                 tag_cache,
2568                                                 always_display_enclosures,
2569                                                 site_url,
2570                                                 note,
2571                                                 num_comments,
2572                                                 comments,
2573                                                 int_id,
2574                                                 unread,feed_id,marked,published,link,last_read,orig_feed_id,
2575                                                 ".SUBSTRING_FOR_DATE."(last_read,1,19) as last_read_noms,
2576                                                 $vfeed_query_part
2577                                                 $content_query_part
2578                                                 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated_noms,
2579                                                 author,score
2580                                         FROM
2581                                                 $from_qpart
2582                                         WHERE
2583                                         $feed_check_qpart
2584                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
2585                                         ttrss_user_entries.owner_uid = '$owner_uid' AND
2586                                         $search_query_part
2587                                         $filter_query_part
2588                                         $view_query_part
2589                                         $since_id_part
2590                                         $query_strategy_part ORDER BY $order_by
2591                                         $limit_query_part $offset_query_part";
2592
2593                                 if ($_REQUEST["debug"]) print $query;
2594
2595                                 $result = db_query($link, $query);
2596
2597                         } else {
2598                                 // browsing by tag
2599
2600                                 $select_qpart = "SELECT DISTINCT " .
2601                                                                 "date_entered," .
2602                                                                 "guid," .
2603                                                                 "note," .
2604                                                                 "ttrss_entries.id as id," .
2605                                                                 "title," .
2606                                                                 "updated," .
2607                                                                 "unread," .
2608                                                                 "feed_id," .
2609                                                                 "orig_feed_id," .
2610                                                                 "marked," .
2611                                                                 "num_comments, " .
2612                                                                 "comments, " .
2613                                                                 "tag_cache," .
2614                                                                 "label_cache," .
2615                                                                 "link," .
2616                                                                 "last_read," .
2617                                                                 SUBSTRING_FOR_DATE . "(last_read,1,19) as last_read_noms," .
2618                                                                 $since_id_part .
2619                                                                 $vfeed_query_part .
2620                                                                 $content_query_part .
2621                                                                 SUBSTRING_FOR_DATE . "(updated,1,19) as updated_noms," .
2622                                                                 "score ";
2623
2624                                 $feed_kind = "Tags";
2625                                 $all_tags = explode(",", $feed);
2626                                 if ($search_mode == 'any') {
2627                                         $tag_sql = "tag_name in (" . implode(", ", array_map("db_quote", $all_tags)) . ")";
2628                                         $from_qpart = " FROM ttrss_entries,ttrss_user_entries,ttrss_tags ";
2629                                         $where_qpart = " WHERE " .
2630                                                                    "ref_id = ttrss_entries.id AND " .
2631                                                                    "ttrss_user_entries.owner_uid = $owner_uid AND " .
2632                                                                    "post_int_id = int_id AND $tag_sql AND " .
2633                                                                    $view_query_part .
2634                                                                    $search_query_part .
2635                                                                    $query_strategy_part . " ORDER BY $order_by " .
2636                                                                    $limit_query_part;
2637
2638                                 } else {
2639                                         $i = 1;
2640                                         $sub_selects = array();
2641                                         $sub_ands = array();
2642                                         foreach ($all_tags as $term) {
2643                                                 array_push($sub_selects, "(SELECT post_int_id from ttrss_tags WHERE tag_name = " . db_quote($term) . " AND owner_uid = $owner_uid) as A$i");
2644                                                 $i++;
2645                                         }
2646                                         if ($i > 2) {
2647                                                 $x = 1;
2648                                                 $y = 2;
2649                                                 do {
2650                                                         array_push($sub_ands, "A$x.post_int_id = A$y.post_int_id");
2651                                                         $x++;
2652                                                         $y++;
2653                                                 } while ($y < $i);
2654                                         }
2655                                         array_push($sub_ands, "A1.post_int_id = ttrss_user_entries.int_id and ttrss_user_entries.owner_uid = $owner_uid");
2656                                         array_push($sub_ands, "ttrss_user_entries.ref_id = ttrss_entries.id");
2657                                         $from_qpart = " FROM " . implode(", ", $sub_selects) . ", ttrss_user_entries, ttrss_entries";
2658                                         $where_qpart = " WHERE " . implode(" AND ", $sub_ands);
2659                                 }
2660                                 //                              error_log("TAG SQL: " . $tag_sql);
2661                                 // $tag_sql = "tag_name = '$feed'";   DEFAULT way
2662
2663                                 //                              error_log("[". $select_qpart . "][" . $from_qpart . "][" .$where_qpart . "]");
2664                                 $result = db_query($link, $select_qpart . $from_qpart . $where_qpart);
2665                         }
2666
2667                         return array($result, $feed_title, $feed_site_url, $last_error);
2668
2669         }
2670
2671         function sanitize($link, $str, $force_strip_tags = false, $owner = false, $site_url = false) {
2672                 global $purifier;
2673
2674                 if (!$owner) $owner = $_SESSION["uid"];
2675
2676                 $res = trim($str); if (!$res) return '';
2677
2678                 // create global Purifier object if needed
2679                 if (!$purifier) {
2680                         require_once 'lib/htmlpurifier/library/HTMLPurifier.auto.php';
2681
2682                         $config = HTMLPurifier_Config::createDefault();
2683
2684                         $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]";
2685
2686                         $config->set('HTML.SafeObject', true);
2687                         @$config->set('HTML', 'Allowed', $allowed);
2688                         $config->set('Output.FlashCompat', true);
2689                         $config->set('Attr.EnableID', true);
2690                         if (!defined('MOBILE_VERSION')) {
2691                                 @$config->set('Cache', 'SerializerPath', CACHE_DIR . "/htmlpurifier");
2692                         } else {
2693                                 @$config->set('Cache', 'SerializerPath', "../" . CACHE_DIR . "/htmlpurifier");
2694                         }
2695
2696                         $config->set('Filter.YouTube', true);
2697
2698                         $purifier = new HTMLPurifier($config);
2699                 }
2700
2701                 $res = $purifier->purify($res);
2702
2703                 if (get_pref($link, "STRIP_IMAGES", $owner)) {
2704                         $res = preg_replace('/<img[^>]+>/is', '', $res);
2705                 }
2706
2707                 if (strpos($res, "href=") === false)
2708                         $res = rewrite_urls($res);
2709
2710                 $charset_hack = '<head>
2711                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
2712                 </head>';
2713
2714                 $res = trim($res); if (!$res) return '';
2715
2716                 libxml_use_internal_errors(true);
2717
2718                 $doc = new DOMDocument();
2719                 $doc->loadHTML($charset_hack . $res);
2720                 $xpath = new DOMXPath($doc);
2721
2722                 $entries = $xpath->query('(//a[@href]|//img[@src])');
2723                 $br_inserted = 0;
2724
2725                 foreach ($entries as $entry) {
2726
2727                         if ($site_url) {
2728
2729                                 if ($entry->hasAttribute('href'))
2730                                         $entry->setAttribute('href',
2731                                                 rewrite_relative_url($site_url, $entry->getAttribute('href')));
2732
2733                                 if ($entry->hasAttribute('src'))
2734                                         if (preg_match('/^image.php\?i=[a-z0-9]+$/', $entry->getAttribute('src')) == 0)
2735                                                 $entry->setAttribute('src',
2736                                                         rewrite_relative_url($site_url, $entry->getAttribute('src')));
2737                         }
2738
2739                         if (strtolower($entry->nodeName) == "a") {
2740                                 $entry->setAttribute("target", "_blank");
2741                         }
2742
2743                         if (strtolower($entry->nodeName) == "img" && !$br_inserted) {
2744                                 $br = $doc->createElement("br");
2745
2746                                 if ($entry->parentNode->nextSibling) {
2747                                         $entry->parentNode->insertBefore($br, $entry->nextSibling);
2748                                         $br_inserted = 1;
2749                                 }
2750
2751                         }
2752                 }
2753
2754                 $node = $doc->getElementsByTagName('body')->item(0);
2755
2756                 return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
2757         }
2758
2759         /**
2760          * Send by mail a digest of last articles.
2761          *
2762          * @param mixed $link The database connection.
2763          * @param integer $limit The maximum number of articles by digest.
2764          * @return boolean Return false if digests are not enabled.
2765          */
2766         function send_headlines_digests($link, $debug = false) {
2767
2768                 require_once 'lib/phpmailer/class.phpmailer.php';
2769
2770                 $user_limit = 15; // amount of users to process (e.g. emails to send out)
2771                 $limit = 1000; // maximum amount of headlines to include
2772
2773                 if ($debug) _debug("Sending digests, batch of max $user_limit users, headline limit = $limit");
2774
2775                 if (DB_TYPE == "pgsql") {
2776                         $interval_query = "last_digest_sent < NOW() - INTERVAL '1 days'";
2777                 } else if (DB_TYPE == "mysql") {
2778                         $interval_query = "last_digest_sent < DATE_SUB(NOW(), INTERVAL 1 DAY)";
2779                 }
2780
2781                 $result = db_query($link, "SELECT id,email FROM ttrss_users
2782                                 WHERE email != '' AND (last_digest_sent IS NULL OR $interval_query)");
2783
2784                 while ($line = db_fetch_assoc($result)) {
2785
2786                         if (get_pref($link, 'DIGEST_ENABLE', $line['id'], false)) {
2787                                 $preferred_ts = strtotime(get_pref($link, 'DIGEST_PREFERRED_TIME', $line['id'], '00:00'));
2788
2789                                 // try to send digests within 2 hours of preferred time
2790                                 if ($preferred_ts && time() >= $preferred_ts &&
2791                                                 time() - $preferred_ts <= 7200) {
2792
2793                                         if ($debug) print "Sending digest for UID:" . $line['id'] . " - " . $line["email"] . " ... ";
2794
2795                                         $do_catchup = get_pref($link, 'DIGEST_CATCHUP', $line['id'], false);
2796
2797                                         global $tz_offset;
2798
2799                                         // reset tz_offset global to prevent tz cache clash between users
2800                                         $tz_offset = -1;
2801
2802                                         $tuple = prepare_headlines_digest($link, $line["id"], 1, $limit);
2803                                         $digest = $tuple[0];
2804                                         $headlines_count = $tuple[1];
2805                                         $affected_ids = $tuple[2];
2806                                         $digest_text = $tuple[3];
2807
2808                                         if ($headlines_count > 0) {
2809
2810                                                 $mail = new PHPMailer();
2811
2812                                                 $mail->PluginDir = "lib/phpmailer/";
2813                                                 $mail->SetLanguage("en", "lib/phpmailer/language/");
2814
2815                                                 $mail->CharSet = "UTF-8";
2816
2817                                                 $mail->From = SMTP_FROM_ADDRESS;
2818                                                 $mail->FromName = SMTP_FROM_NAME;
2819                                                 $mail->AddAddress($line["email"], $line["login"]);
2820
2821                                                 if (SMTP_HOST) {
2822                                                         $mail->Host = SMTP_HOST;
2823                                                         $mail->Mailer = "smtp";
2824                                                         $mail->SMTPAuth = SMTP_LOGIN != '';
2825                                                         $mail->Username = SMTP_LOGIN;
2826                                                         $mail->Password = SMTP_PASSWORD;
2827                                                 }
2828
2829                                                 $mail->IsHTML(true);
2830                                                 $mail->Subject = DIGEST_SUBJECT;
2831                                                 $mail->Body = $digest;
2832                                                 $mail->AltBody = $digest_text;
2833
2834                                                 $rc = $mail->Send();
2835
2836                                                 if (!$rc && $debug) print "ERROR: " . $mail->ErrorInfo;
2837
2838                                                 if ($debug) print "RC=$rc\n";
2839
2840                                                 if ($rc && $do_catchup) {
2841                                                         if ($debug) print "Marking affected articles as read...\n";
2842                                                         catchupArticlesById($link, $affected_ids, 0, $line["id"]);
2843                                                 }
2844                                         } else {
2845                                                 if ($debug) print "No headlines\n";
2846                                         }
2847
2848                                         db_query($link, "UPDATE ttrss_users SET last_digest_sent = NOW()
2849                                                 WHERE id = " . $line["id"]);
2850
2851                                 }
2852                         }
2853                 }
2854
2855                 if ($debug) _debug("All done.");
2856
2857         }
2858
2859         function prepare_headlines_digest($link, $user_id, $days = 1, $limit = 1000) {
2860
2861                 require_once "lib/MiniTemplator.class.php";
2862
2863                 $tpl = new MiniTemplator;
2864                 $tpl_t = new MiniTemplator;
2865
2866                 $tpl->readTemplateFromFile("templates/digest_template_html.txt");
2867                 $tpl_t->readTemplateFromFile("templates/digest_template.txt");
2868
2869                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $user_id);
2870                 $local_ts = convert_timestamp(time(), 'UTC', $user_tz_string);
2871
2872                 $tpl->setVariable('CUR_DATE', date('Y/m/d', $local_ts));
2873                 $tpl->setVariable('CUR_TIME', date('G:i', $local_ts));
2874
2875                 $tpl_t->setVariable('CUR_DATE', date('Y/m/d', $local_ts));
2876                 $tpl_t->setVariable('CUR_TIME', date('G:i', $local_ts));
2877
2878                 $affected_ids = array();
2879
2880                 if (DB_TYPE == "pgsql") {
2881                         $interval_query = "ttrss_entries.date_updated > NOW() - INTERVAL '$days days'";
2882                 } else if (DB_TYPE == "mysql") {
2883                         $interval_query = "ttrss_entries.date_updated > DATE_SUB(NOW(), INTERVAL $days DAY)";
2884                 }
2885
2886                 $result = db_query($link, "SELECT ttrss_entries.title,
2887                                 ttrss_feeds.title AS feed_title,
2888                                 COALESCE(ttrss_feed_categories.title, '".__('Uncategorized')."') AS cat_title,
2889                                 date_updated,
2890                                 ttrss_user_entries.ref_id,
2891                                 link,
2892                                 score,
2893                                 content,
2894                                 ".SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
2895                         FROM
2896                                 ttrss_user_entries,ttrss_entries,ttrss_feeds
2897                         LEFT JOIN
2898                                 ttrss_feed_categories ON (cat_id = ttrss_feed_categories.id)
2899                         WHERE
2900                                 ref_id = ttrss_entries.id AND feed_id = ttrss_feeds.id
2901                                 AND include_in_digest = true
2902                                 AND $interval_query
2903                                 AND ttrss_user_entries.owner_uid = $user_id
2904                                 AND unread = true
2905                                 AND score >= 0
2906                         ORDER BY ttrss_feed_categories.title, ttrss_feeds.title, score DESC, date_updated DESC
2907                         LIMIT $limit");
2908
2909                 $cur_feed_title = "";
2910
2911                 $headlines_count = db_num_rows($result);
2912
2913                 $headlines = array();
2914
2915                 while ($line = db_fetch_assoc($result)) {
2916                         array_push($headlines, $line);
2917                 }
2918
2919                 for ($i = 0; $i < sizeof($headlines); $i++) {
2920
2921                         $line = $headlines[$i];
2922
2923                         array_push($affected_ids, $line["ref_id"]);
2924
2925                         $updated = make_local_datetime($link, $line['last_updated'], false,
2926                                 $user_id);
2927
2928 /*                      if ($line["score"] != 0) {
2929                                 if ($line["score"] > 0) $line["score"] = '+' . $line["score"];
2930
2931                                 $line["title"] .= " (".$line['score'].")";
2932                         } */
2933
2934                         if (get_pref($link, 'ENABLE_FEED_CATS', $user_id)) {
2935                                 $line['feed_title'] = $line['cat_title'] . " / " . $line['feed_title'];
2936                         }
2937
2938                         $tpl->setVariable('FEED_TITLE', $line["feed_title"]);
2939                         $tpl->setVariable('ARTICLE_TITLE', $line["title"]);
2940                         $tpl->setVariable('ARTICLE_LINK', $line["link"]);
2941                         $tpl->setVariable('ARTICLE_UPDATED', $updated);
2942                         $tpl->setVariable('ARTICLE_EXCERPT',
2943                                 truncate_string(strip_tags($line["content"]), 300));
2944 //                      $tpl->setVariable('ARTICLE_CONTENT',
2945 //                              strip_tags($article_content));
2946
2947                         $tpl->addBlock('article');
2948
2949                         $tpl_t->setVariable('FEED_TITLE', $line["feed_title"]);
2950                         $tpl_t->setVariable('ARTICLE_TITLE', $line["title"]);
2951                         $tpl_t->setVariable('ARTICLE_LINK', $line["link"]);
2952                         $tpl_t->setVariable('ARTICLE_UPDATED', $updated);
2953 //                      $tpl_t->setVariable('ARTICLE_EXCERPT',
2954 //                              truncate_string(strip_tags($line["excerpt"]), 100));
2955
2956                         $tpl_t->addBlock('article');
2957
2958                         if ($headlines[$i]['feed_title'] != $headlines[$i+1]['feed_title']) {
2959                                 $tpl->addBlock('feed');
2960                                 $tpl_t->addBlock('feed');
2961                         }
2962
2963                 }
2964
2965                 $tpl->addBlock('digest');
2966                 $tpl->generateOutputToString($tmp);
2967
2968                 $tpl_t->addBlock('digest');
2969                 $tpl_t->generateOutputToString($tmp_t);
2970
2971                 return array($tmp, $headlines_count, $affected_ids, $tmp_t);
2972         }
2973
2974         function check_for_update($link) {
2975                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2976                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION;
2977
2978                         $version_data = @fetch_file_contents($version_url);
2979
2980                         if ($version_data) {
2981                                 $version_data = json_decode($version_data, true);
2982                                 if ($version_data && $version_data['version']) {
2983
2984                                         if (version_compare(VERSION, $version_data['version']) == -1) {
2985                                                 return $version_data;
2986                                         }
2987                                 }
2988                         }
2989                 }
2990                 return false;
2991         }
2992
2993         function markArticlesById($link, $ids, $cmode) {
2994
2995                 $tmp_ids = array();
2996
2997                 foreach ($ids as $id) {
2998                         array_push($tmp_ids, "ref_id = '$id'");
2999                 }
3000
3001                 $ids_qpart = join(" OR ", $tmp_ids);
3002
3003                 if ($cmode == 0) {
3004                         db_query($link, "UPDATE ttrss_user_entries SET
3005                         marked = false,last_read = NOW()
3006                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3007                 } else if ($cmode == 1) {
3008                         db_query($link, "UPDATE ttrss_user_entries SET
3009                         marked = true
3010                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3011                 } else {
3012                         db_query($link, "UPDATE ttrss_user_entries SET
3013                         marked = NOT marked,last_read = NOW()
3014                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3015                 }
3016         }
3017
3018         function publishArticlesById($link, $ids, $cmode) {
3019
3020                 $tmp_ids = array();
3021
3022                 foreach ($ids as $id) {
3023                         array_push($tmp_ids, "ref_id = '$id'");
3024                 }
3025
3026                 $ids_qpart = join(" OR ", $tmp_ids);
3027
3028                 if ($cmode == 0) {
3029                         db_query($link, "UPDATE ttrss_user_entries SET
3030                         published = false,last_read = NOW()
3031                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3032                 } else if ($cmode == 1) {
3033                         db_query($link, "UPDATE ttrss_user_entries SET
3034                         published = true
3035                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3036                 } else {
3037                         db_query($link, "UPDATE ttrss_user_entries SET
3038                         published = NOT published,last_read = NOW()
3039                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3040                 }
3041
3042                 if (PUBSUBHUBBUB_HUB) {
3043                         $rss_link = get_self_url_prefix() .
3044                                 "/public.php?op=rss&id=-2&key=" .
3045                                 get_feed_access_key($link, -2, false);
3046
3047                         $p = new Publisher(PUBSUBHUBBUB_HUB);
3048
3049                         $pubsub_result = $p->publish_update($rss_link);
3050                 }
3051         }
3052
3053         function catchupArticlesById($link, $ids, $cmode, $owner_uid = false) {
3054
3055                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3056                 if (count($ids) == 0) return;
3057
3058                 $tmp_ids = array();
3059
3060                 foreach ($ids as $id) {
3061                         array_push($tmp_ids, "ref_id = '$id'");
3062                 }
3063
3064                 $ids_qpart = join(" OR ", $tmp_ids);
3065
3066                 if ($cmode == 0) {
3067                         db_query($link, "UPDATE ttrss_user_entries SET
3068                         unread = false,last_read = NOW()
3069                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3070                 } else if ($cmode == 1) {
3071                         db_query($link, "UPDATE ttrss_user_entries SET
3072                         unread = true
3073                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3074                 } else {
3075                         db_query($link, "UPDATE ttrss_user_entries SET
3076                         unread = NOT unread,last_read = NOW()
3077                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3078                 }
3079
3080                 /* update ccache */
3081
3082                 $result = db_query($link, "SELECT DISTINCT feed_id FROM ttrss_user_entries
3083                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3084
3085                 while ($line = db_fetch_assoc($result)) {
3086                         ccache_update($link, $line["feed_id"], $owner_uid);
3087                 }
3088         }
3089
3090         function catchupArticleById($link, $id, $cmode) {
3091
3092                 if ($cmode == 0) {
3093                         db_query($link, "UPDATE ttrss_user_entries SET
3094                         unread = false,last_read = NOW()
3095                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3096                 } else if ($cmode == 1) {
3097                         db_query($link, "UPDATE ttrss_user_entries SET
3098                         unread = true
3099                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3100                 } else {
3101                         db_query($link, "UPDATE ttrss_user_entries SET
3102                         unread = NOT unread,last_read = NOW()
3103                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3104                 }
3105
3106                 $feed_id = getArticleFeed($link, $id);
3107                 ccache_update($link, $feed_id, $_SESSION["uid"]);
3108         }
3109
3110         function make_guid_from_title($title) {
3111                 return preg_replace("/[ \"\',.:;]/", "-",
3112                         mb_strtolower(strip_tags($title), 'utf-8'));
3113         }
3114
3115         function get_article_tags($link, $id, $owner_uid = 0, $tag_cache = false) {
3116
3117                 $a_id = db_escape_string($id);
3118
3119                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3120
3121                 $query = "SELECT DISTINCT tag_name,
3122                         owner_uid as owner FROM
3123                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
3124                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
3125
3126                 $obj_id = md5("TAGS:$owner_uid:$id");
3127                 $tags = array();
3128
3129                 /* check cache first */
3130
3131                 if ($tag_cache === false) {
3132                         $result = db_query($link, "SELECT tag_cache FROM ttrss_user_entries
3133                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
3134
3135                         $tag_cache = db_fetch_result($result, 0, "tag_cache");
3136                 }
3137
3138                 if ($tag_cache) {
3139                         $tags = explode(",", $tag_cache);
3140                 } else {
3141
3142                         /* do it the hard way */
3143
3144                         $tmp_result = db_query($link, $query);
3145
3146                         while ($tmp_line = db_fetch_assoc($tmp_result)) {
3147                                 array_push($tags, $tmp_line["tag_name"]);
3148                         }
3149
3150                         /* update the cache */
3151
3152                         $tags_str = db_escape_string(join(",", $tags));
3153
3154                         db_query($link, "UPDATE ttrss_user_entries
3155                                 SET tag_cache = '$tags_str' WHERE ref_id = '$id'
3156                                 AND owner_uid = $owner_uid");
3157                 }
3158
3159                 return $tags;
3160         }
3161
3162         function trim_array($array) {
3163                 $tmp = $array;
3164                 array_walk($tmp, 'trim');
3165                 return $tmp;
3166         }
3167
3168         function tag_is_valid($tag) {
3169                 if ($tag == '') return false;
3170                 if (preg_match("/^[0-9]*$/", $tag)) return false;
3171                 if (mb_strlen($tag) > 250) return false;
3172
3173                 if (function_exists('iconv')) {
3174                         $tag = iconv("utf-8", "utf-8", $tag);
3175                 }
3176
3177                 if (!$tag) return false;
3178
3179                 return true;
3180         }
3181
3182         function render_login_form($link, $mobile = 0) {
3183                 switch ($mobile) {
3184                 case 0:
3185                         require_once "login_form.php";
3186                         break;
3187                 case 1:
3188                         require_once "mobile/login_form.php";
3189                         break;
3190                 case 2:
3191                         require_once "mobile/classic/login_form.php";
3192                 }
3193         }
3194
3195         // from http://developer.apple.com/internet/safari/faq.html
3196         function no_cache_incantation() {
3197                 header("Expires: Mon, 22 Dec 1980 00:00:00 GMT"); // Happy birthday to me :)
3198                 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
3199                 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); // HTTP/1.1
3200                 header("Cache-Control: post-check=0, pre-check=0", false);
3201                 header("Pragma: no-cache"); // HTTP/1.0
3202         }
3203
3204         function format_warning($msg, $id = "") {
3205                 global $link;
3206                 return "<div class=\"warning\" id=\"$id\">
3207                         <img src=\"".theme_image($link, "images/sign_excl.png")."\">$msg</div>";
3208         }
3209
3210         function format_notice($msg, $id = "") {
3211                 global $link;
3212                 return "<div class=\"notice\" id=\"$id\">
3213                         <img src=\"".theme_image($link, "images/sign_info.png")."\">$msg</div>";
3214         }
3215
3216         function format_error($msg, $id = "") {
3217                 global $link;
3218                 return "<div class=\"error\" id=\"$id\">
3219                         <img src=\"".theme_image($link, "images/sign_excl.png")."\">$msg</div>";
3220         }
3221
3222         function print_notice($msg) {
3223                 return print format_notice($msg);
3224         }
3225
3226         function print_warning($msg) {
3227                 return print format_warning($msg);
3228         }
3229
3230         function print_error($msg) {
3231                 return print format_error($msg);
3232         }
3233
3234
3235         function T_sprintf() {
3236                 $args = func_get_args();
3237                 return vsprintf(__(array_shift($args)), $args);
3238         }
3239
3240         function format_inline_player($link, $url, $ctype) {
3241
3242                 $entry = "";
3243
3244                 if (strpos($ctype, "audio/") === 0) {
3245
3246                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
3247                                 strpos($_SERVER['HTTP_USER_AGENT'], "Chrome") !== false ||
3248                                 strpos($_SERVER['HTTP_USER_AGENT'], "Safari") !== false )) {
3249
3250                                 $id = 'AUDIO-' . uniqid();
3251
3252                                 $entry .= "<audio id=\"$id\"\">
3253                                         <source src=\"$url\"></source>
3254                                         </audio>";
3255
3256                                 $entry .= "<span onclick=\"player(this)\"
3257                                         title=\"".__("Click to play")."\" status=\"0\"
3258                                         class=\"player\" audio-id=\"$id\">".__("Play")."</span>";
3259
3260                         } else {
3261
3262                                 $entry .= "<object type=\"application/x-shockwave-flash\"
3263                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
3264                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
3265                                         <param name=\"movie\"
3266                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
3267                                         </object>";
3268                         }
3269                 }
3270
3271                 $filename = substr($url, strrpos($url, "/")+1);
3272
3273                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3274                         $filename . " (" . $ctype . ")" . "</a>";
3275
3276                 return $entry;
3277         }
3278
3279         function format_article($link, $id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
3280                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3281
3282                 $rv = array();
3283
3284                 $rv['id'] = $id;
3285
3286                 /* we can figure out feed_id from article id anyway, why do we
3287                  * pass feed_id here? let's ignore the argument :( */
3288
3289                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3290                         WHERE ref_id = '$id'");
3291
3292                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
3293
3294                 $rv['feed_id'] = $feed_id;
3295
3296                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
3297
3298                 $result = db_query($link, "SELECT rtl_content, always_display_enclosures FROM ttrss_feeds
3299                         WHERE id = '$feed_id' AND owner_uid = $owner_uid");
3300
3301                 if (db_num_rows($result) == 1) {
3302                         $rtl_content = sql_bool_to_bool(db_fetch_result($result, 0, "rtl_content"));
3303                         $always_display_enclosures = sql_bool_to_bool(db_fetch_result($result, 0, "always_display_enclosures"));
3304                 } else {
3305                         $rtl_content = false;
3306                         $always_display_enclosures = false;
3307                 }
3308
3309                 if ($rtl_content) {
3310                         $rtl_tag = "dir=\"RTL\"";
3311                         $rtl_class = "RTL";
3312                 } else {
3313                         $rtl_tag = "";
3314                         $rtl_class = "";
3315                 }
3316
3317                 if ($mark_as_read) {
3318                         $result = db_query($link, "UPDATE ttrss_user_entries
3319                                 SET unread = false,last_read = NOW()
3320                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
3321
3322                         ccache_update($link, $feed_id, $owner_uid);
3323                 }
3324
3325                 $result = db_query($link, "SELECT title,link,content,feed_id,comments,int_id,
3326                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
3327                         (SELECT icon_url FROM ttrss_feeds WHERE id = feed_id) as icon_url,
3328                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
3329                         num_comments,
3330                         tag_cache,
3331                         author,
3332                         orig_feed_id,
3333                         note
3334                         FROM ttrss_entries,ttrss_user_entries
3335                         WHERE   id = '$id' AND ref_id = id AND owner_uid = $owner_uid");
3336
3337                 if ($result) {
3338
3339                         $line = db_fetch_assoc($result);
3340
3341                         if ($line["icon_url"]) {
3342                                 $feed_icon = "<img src=\"" . $line["icon_url"] . "\">";
3343                         } else {
3344                                 $feed_icon = "&nbsp;";
3345                         }
3346
3347                         $feed_site_url = $line['site_url'];
3348
3349                         $num_comments = $line["num_comments"];
3350                         $entry_comments = "";
3351
3352                         if ($num_comments > 0) {
3353                                 if ($line["comments"]) {
3354                                         $comments_url = $line["comments"];
3355                                 } else {
3356                                         $comments_url = $line["link"];
3357                                 }
3358                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
3359                         } else {
3360                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
3361                                         $entry_comments = "<a target='_blank' href=\"".$line["comments"]."\">comments</a>";
3362                                 }
3363                         }
3364
3365                         if ($zoom_mode) {
3366                                 header("Content-Type: text/html");
3367                                 $rv['content'] .= "<html><head>
3368                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
3369                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
3370                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
3371                                         </head><body>";
3372                         }
3373
3374                         $title_escaped = db_escape_string($line['title']);
3375
3376                         $rv['content'] .= "<div id=\"PTITLE-$id\" style=\"display : none\">" .
3377                                 truncate_string(strip_tags($line['title']), 15) . "</div>";
3378
3379                         $rv['content'] .= "<div id=\"PTITLE-FULL-$id\" style=\"display : none\">" .
3380                                 strip_tags($line['title']) . "</div>";
3381
3382                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
3383
3384                         $rv['content'] .= "<div onclick=\"return postClicked(event, $id)\"
3385                                 class=\"postHeader\" id=\"POSTHDR-$id\">";
3386
3387                         $entry_author = $line["author"];
3388
3389                         if ($entry_author) {
3390                                 $entry_author = __(" - ") . $entry_author;
3391                         }
3392
3393                         $parsed_updated = make_local_datetime($link, $line["updated"], true,
3394                                 $owner_uid, true);
3395
3396                         $rv['content'] .= "<div class=\"postDate$rtl_class\">$parsed_updated</div>";
3397
3398                         if ($line["link"]) {
3399                                 $rv['content'] .= "<div class='postTitle' clear='both'><a target='_blank'
3400                                         title=\"".htmlspecialchars($line['title'])."\"
3401                                         href=\"" .
3402                                         $line["link"] . "\">" .
3403                                         truncate_string($line["title"], 100) .
3404                                         "<span class='author'>$entry_author</span></a></div>";
3405                         } else {
3406                                 $rv['content'] .= "<div class='postTitle' clear='both'>" . $line["title"] . "$entry_author</div>";
3407                         }
3408
3409                         $tag_cache = $line["tag_cache"];
3410
3411                         if (!$tag_cache)
3412                                 $tags = get_article_tags($link, $id, $owner_uid);
3413                         else
3414                                 $tags = explode(",", $tag_cache);
3415
3416                         $tags_str = format_tags_string($tags, $id);
3417                         $tags_str_full = join(", ", $tags);
3418
3419                         if (!$tags_str_full) $tags_str_full = __("no tags");
3420
3421                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
3422
3423                         $rv['content'] .= "<div class='postTags' style='float : right'>
3424                                 <img src='".theme_image($link, 'images/tag.png')."'
3425                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
3426
3427                         if (!$zoom_mode) {
3428                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
3429                                         <a title=\"".__('Edit tags for this article')."\"
3430                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
3431
3432                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
3433                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
3434                                         position=\"below\">$tags_str_full</div>";
3435
3436                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/art-zoom.png')."\"
3437                                                 class='tagsPic' style=\"cursor : pointer\"
3438                                                 onclick=\"postOpenInNewTab(event, $id)\"
3439                                                 alt='Zoom' title='".__('Open article in new tab')."'>";
3440
3441                                 $button_plugins = explode(",", ARTICLE_BUTTON_PLUGINS);
3442
3443                                 foreach ($button_plugins as $p) {
3444                                         $pclass = trim("button_${p}");
3445
3446                                         if (class_exists($pclass)) {
3447                                                 $plugin = new $pclass($link);
3448                                                 $rv['content'] .= $plugin->render($id, $line);
3449                                         }
3450                                 }
3451
3452                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/digest_checkbox.png')."\"
3453                                                 class='tagsPic' style=\"cursor : pointer\"
3454                                                 onclick=\"closeArticlePanel($id)\"
3455                                                 title='".__('Close article')."'>";
3456
3457                         } else {
3458                                 $tags_str = strip_tags($tags_str);
3459                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
3460                         }
3461                         $rv['content'] .= "</div>";
3462                         $rv['content'] .= "<div clear='both'>$entry_comments</div>";
3463
3464                         if ($line["orig_feed_id"]) {
3465
3466                                 $tmp_result = db_query($link, "SELECT * FROM ttrss_archived_feeds
3467                                         WHERE id = ".$line["orig_feed_id"]);
3468
3469                                 if (db_num_rows($tmp_result) != 0) {
3470
3471                                         $rv['content'] .= "<div clear='both'>";
3472                                         $rv['content'] .= __("Originally from:");
3473
3474                                         $rv['content'] .= "&nbsp;";
3475
3476                                         $tmp_line = db_fetch_assoc($tmp_result);
3477
3478                                         $rv['content'] .= "<a target='_blank'
3479                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
3480                                                 $tmp_line['title'] . "</a>";
3481
3482                                         $rv['content'] .= "&nbsp;";
3483
3484                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3485                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.png'></a>";
3486
3487                                         $rv['content'] .= "</div>";
3488                                 }
3489                         }
3490
3491                         $rv['content'] .= "</div>";
3492
3493                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3494                                 if ($line['note']) {
3495                                         $rv['content'] .= format_article_note($id, $line['note']);
3496                                 }
3497                         $rv['content'] .= "</div>";
3498
3499                         $rv['content'] .= "<div class=\"postIcon\">" .
3500                                 "<a target=\"_blank\" title=\"".__("Visit the website")."\"$
3501                                 href=\"".htmlspecialchars($feed_site_url)."\">".
3502                                 $feed_icon . "</a></div>";
3503
3504                         $rv['content'] .= "<div class=\"postContent\">";
3505
3506                         // N-grams
3507
3508                         if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_RELATED_THRESHOLD')) {
3509
3510                                 $ngram_result = db_query($link, "SELECT id,title FROM
3511                                                 ttrss_entries,ttrss_user_entries
3512                                         WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
3513                                                 AND similarity(title, '$title_escaped') >= "._NGRAM_TITLE_RELATED_THRESHOLD."
3514                                                 AND title != '$title_escaped'
3515                                                 AND owner_uid = $owner_uid");
3516
3517                                 if (db_num_rows($ngram_result) > 0) {
3518                                         $rv['content'] .= "<div dojoType=\"dijit.form.DropDownButton\">".
3519                                                 "<span>" . __('Related')."</span>";
3520                                         $rv['content'] .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3521
3522                                         while ($nline = db_fetch_assoc($ngram_result)) {
3523                                                 $rv['content'] .= "<div onclick=\"hlOpenInNewTab(null,".$nline['id'].")\"
3524                                                         dojoType=\"dijit.MenuItem\">".$nline['title']."</div>";
3525
3526                                         }
3527                                         $rv['content'] .= "</div></div><br/";
3528                                 }
3529                         }
3530
3531                         $article_content = sanitize($link, $line["content"], false, $owner_uid,
3532                                 $feed_site_url);
3533
3534                         $rv['content'] .= $article_content;
3535
3536                         $rv['content'] .= format_article_enclosures($link, $id,
3537                                 $always_display_enclosures, $article_content);
3538
3539                         $rv['content'] .= "</div>";
3540
3541                         $rv['content'] .= "</div>";
3542
3543                 }
3544
3545                 if ($zoom_mode) {
3546                         $rv['content'] .= "
3547                                 <div style=\"text-align : center\">
3548                                 <button onclick=\"return window.close()\">".
3549                                         __("Close this window")."</button></div>";
3550                         $rv['content'] .= "</body></html>";
3551                 }
3552
3553                 return $rv;
3554
3555         }
3556
3557         function print_checkpoint($n, $s) {
3558                 $ts = getmicrotime();
3559                 echo sprintf("<!-- CP[$n] %.4f seconds -->", $ts - $s);
3560                 return $ts;
3561         }
3562
3563         function sanitize_tag($tag) {
3564                 $tag = trim($tag);
3565
3566                 $tag = mb_strtolower($tag, 'utf-8');
3567
3568                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3569
3570 //              $tag = str_replace('"', "", $tag);
3571 //              $tag = str_replace("+", " ", $tag);
3572                 $tag = str_replace("technorati tag: ", "", $tag);
3573
3574                 return $tag;
3575         }
3576
3577         function get_self_url_prefix() {
3578                 return SELF_URL_PATH;
3579         }
3580
3581         function opml_publish_url($link){
3582
3583                 $url_path = get_self_url_prefix();
3584                 $url_path .= "/opml.php?op=publish&key=" .
3585                         get_feed_access_key($link, 'OPML:Publish', false, $_SESSION["uid"]);
3586
3587                 return $url_path;
3588         }
3589
3590         /**
3591          * Purge a feed contents, marked articles excepted.
3592          *
3593          * @param mixed $link The database connection.
3594          * @param integer $id The id of the feed to purge.
3595          * @return void
3596          */
3597         function clear_feed_articles($link, $id) {
3598
3599                 if ($id != 0) {
3600                         $result = db_query($link, "DELETE FROM ttrss_user_entries
3601                         WHERE feed_id = '$id' AND marked = false AND owner_uid = " . $_SESSION["uid"]);
3602                 } else {
3603                         $result = db_query($link, "DELETE FROM ttrss_user_entries
3604                         WHERE feed_id IS NULL AND marked = false AND owner_uid = " . $_SESSION["uid"]);
3605                 }
3606
3607                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
3608                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
3609
3610                 ccache_update($link, $id, $_SESSION['uid']);
3611         } // function clear_feed_articles
3612
3613         /**
3614          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3615          *
3616          * @return string The Mozilla Firefox feed adding URL.
3617          */
3618         function add_feed_url() {
3619                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3620
3621                 $url_path = get_self_url_prefix() .
3622                         "/backend.php?op=pref-feeds&quiet=1&method=add&feed_url=%s";
3623                 return $url_path;
3624         } // function add_feed_url
3625
3626         function encrypt_password($pass, $salt = '', $mode2 = false) {
3627                 if ($salt && $mode2) {
3628                         return "MODE2:" . hash('sha256', $salt . $pass);
3629                 } else if ($salt) {
3630                         return "SHA1X:" . sha1("$salt:$pass");
3631                 } else {
3632                         return "SHA1:" . sha1($pass);
3633                 }
3634         } // function encrypt_password
3635
3636         function sanitize_article_content($text) {
3637                 # we don't support CDATA sections in articles, they break our own escaping
3638                 $text = preg_replace("/\[\[CDATA/", "", $text);
3639                 $text = preg_replace("/\]\]\>/", "", $text);
3640                 return $text;
3641         }
3642
3643         function load_filters($link, $feed, $owner_uid, $action_id = false) {
3644                 $filters = array();
3645
3646
3647                 if ($action_id) $ftype_query_part = "action_id = '$action_id' AND";
3648
3649                 $result = db_query($link, "SELECT reg_exp,
3650                         ttrss_filter_types.name AS name,
3651                         ttrss_filter_actions.name AS action,
3652                         inverse,
3653                         action_param,
3654                         filter_param
3655                         FROM ttrss_filters
3656                                 LEFT JOIN ttrss_feeds ON (ttrss_feeds.id = '$feed'),
3657                                 ttrss_filter_types,ttrss_filter_actions
3658                         WHERE
3659                                 enabled = true AND
3660                                 $ftype_query_part
3661                                 ttrss_filters.owner_uid = $owner_uid AND
3662                                 ttrss_filter_types.id = filter_type AND
3663                                 ttrss_filter_actions.id = action_id AND
3664                                 ((cat_filter = true AND ttrss_feeds.cat_id = ttrss_filters.cat_id) OR
3665                                 (cat_filter = true AND ttrss_feeds.cat_id IS NULL AND
3666                                         ttrss_filters.cat_id IS NULL) OR
3667                                 (cat_filter = false AND (feed_id IS NULL OR feed_id = '$feed')))
3668                         ORDER BY reg_exp");
3669
3670                 while ($line = db_fetch_assoc($result)) {
3671
3672                         if (!$filters[$line["name"]]) $filters[$line["name"]] = array();
3673                                 $filter["reg_exp"] = $line["reg_exp"];
3674                                 $filter["action"] = $line["action"];
3675                                 $filter["action_param"] = $line["action_param"];
3676                                 $filter["filter_param"] = $line["filter_param"];
3677                                 $filter["inverse"] = sql_bool_to_bool($line["inverse"]);
3678
3679                                 array_push($filters[$line["name"]], $filter);
3680                         }
3681
3682
3683                 return $filters;
3684         }
3685
3686         function get_score_pic($score) {
3687                 if ($score > 100) {
3688                         return "score_high.png";
3689                 } else if ($score > 0) {
3690                         return "score_half_high.png";
3691                 } else if ($score < -100) {
3692                         return "score_low.png";
3693                 } else if ($score < 0) {
3694                         return "score_half_low.png";
3695                 } else {
3696                         return "score_neutral.png";
3697                 }
3698         }
3699
3700         function feed_has_icon($id) {
3701                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3702         }
3703
3704         function init_connection($link) {
3705                 if ($link) {
3706
3707                         if (DB_TYPE == "pgsql") {
3708                                 pg_query($link, "set client_encoding = 'UTF-8'");
3709                                 pg_set_client_encoding("UNICODE");
3710                                 pg_query($link, "set datestyle = 'ISO, european'");
3711                                 pg_query($link, "set TIME ZONE 0");
3712                         } else {
3713                                 db_query($link, "SET time_zone = '+0:0'");
3714
3715                                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
3716                                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
3717                                 }
3718                         }
3719                         return true;
3720                 } else {
3721                         print "Unable to connect to database:" . db_last_error();
3722                         return false;
3723                 }
3724         }
3725
3726         /* function ccache_zero($link, $feed_id, $owner_uid) {
3727                 db_query($link, "UPDATE ttrss_counters_cache SET
3728                         value = 0, updated = NOW() WHERE
3729                         feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3730         } */
3731
3732         function ccache_zero_all($link, $owner_uid) {
3733                 db_query($link, "UPDATE ttrss_counters_cache SET
3734                         value = 0 WHERE owner_uid = '$owner_uid'");
3735
3736                 db_query($link, "UPDATE ttrss_cat_counters_cache SET
3737                         value = 0 WHERE owner_uid = '$owner_uid'");
3738         }
3739
3740         function ccache_remove($link, $feed_id, $owner_uid, $is_cat = false) {
3741
3742                 if (!$is_cat) {
3743                         $table = "ttrss_counters_cache";
3744                 } else {
3745                         $table = "ttrss_cat_counters_cache";
3746                 }
3747
3748                 db_query($link, "DELETE FROM $table WHERE
3749                         feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3750
3751         }
3752
3753         function ccache_update_all($link, $owner_uid) {
3754
3755                 if (get_pref($link, 'ENABLE_FEED_CATS', $owner_uid)) {
3756
3757                         $result = db_query($link, "SELECT feed_id FROM ttrss_cat_counters_cache
3758                                 WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
3759
3760                         while ($line = db_fetch_assoc($result)) {
3761                                 ccache_update($link, $line["feed_id"], $owner_uid, true);
3762                         }
3763
3764                         /* We have to manually include category 0 */
3765
3766                         ccache_update($link, 0, $owner_uid, true);
3767
3768                 } else {
3769                         $result = db_query($link, "SELECT feed_id FROM ttrss_counters_cache
3770                                 WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
3771
3772                         while ($line = db_fetch_assoc($result)) {
3773                                 print ccache_update($link, $line["feed_id"], $owner_uid);
3774
3775                         }
3776
3777                 }
3778         }
3779
3780         function ccache_find($link, $feed_id, $owner_uid, $is_cat = false,
3781                 $no_update = false) {
3782
3783                 if (!is_numeric($feed_id)) return;
3784
3785                 if (!$is_cat) {
3786                         $table = "ttrss_counters_cache";
3787                         if ($feed_id > 0) {
3788                                 $tmp_result = db_query($link, "SELECT owner_uid FROM ttrss_feeds
3789                                         WHERE id = '$feed_id'");
3790                                 $owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
3791                         }
3792                 } else {
3793                         $table = "ttrss_cat_counters_cache";
3794                 }
3795
3796                 if (DB_TYPE == "pgsql") {
3797                         $date_qpart = "updated > NOW() - INTERVAL '15 minutes'";
3798                 } else if (DB_TYPE == "mysql") {
3799                         $date_qpart = "updated > DATE_SUB(NOW(), INTERVAL 15 MINUTE)";
3800                 }
3801
3802                 $result = db_query($link, "SELECT value FROM $table
3803                         WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id'
3804                         LIMIT 1");
3805
3806                 if (db_num_rows($result) == 1) {
3807                         return db_fetch_result($result, 0, "value");
3808                 } else {
3809                         if ($no_update) {
3810                                 return -1;
3811                         } else {
3812                                 return ccache_update($link, $feed_id, $owner_uid, $is_cat);
3813                         }
3814                 }
3815
3816         }
3817
3818         function ccache_update($link, $feed_id, $owner_uid, $is_cat = false,
3819                 $update_pcat = true) {
3820
3821                 if (!is_numeric($feed_id)) return;
3822
3823                 if (!$is_cat && $feed_id > 0) {
3824                         $tmp_result = db_query($link, "SELECT owner_uid FROM ttrss_feeds
3825                                 WHERE id = '$feed_id'");
3826                         $owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
3827                 }
3828
3829                 $prev_unread = ccache_find($link, $feed_id, $owner_uid, $is_cat, true);
3830
3831                 /* When updating a label, all we need to do is recalculate feed counters
3832                  * because labels are not cached */
3833
3834                 if ($feed_id < 0) {
3835                         ccache_update_all($link, $owner_uid);
3836                         return;
3837                 }
3838
3839                 if (!$is_cat) {
3840                         $table = "ttrss_counters_cache";
3841                 } else {
3842                         $table = "ttrss_cat_counters_cache";
3843                 }
3844
3845                 if ($is_cat && $feed_id >= 0) {
3846                         if ($feed_id != 0) {
3847                                 $cat_qpart = "cat_id = '$feed_id'";
3848                         } else {
3849                                 $cat_qpart = "cat_id IS NULL";
3850                         }
3851
3852                         /* Recalculate counters for child feeds */
3853
3854                         $result = db_query($link, "SELECT id FROM ttrss_feeds
3855                                                 WHERE owner_uid = '$owner_uid' AND $cat_qpart");
3856
3857                         while ($line = db_fetch_assoc($result)) {
3858                                 ccache_update($link, $line["id"], $owner_uid, false, false);
3859                         }
3860
3861                         $result = db_query($link, "SELECT SUM(value) AS sv
3862                                 FROM ttrss_counters_cache, ttrss_feeds
3863                                 WHERE id = feed_id AND $cat_qpart AND
3864                                 ttrss_feeds.owner_uid = '$owner_uid'");
3865
3866                         $unread = (int) db_fetch_result($result, 0, "sv");
3867
3868                 } else {
3869                         $unread = (int) getFeedArticles($link, $feed_id, $is_cat, true, $owner_uid);
3870                 }
3871
3872                 db_query($link, "BEGIN");
3873
3874                 $result = db_query($link, "SELECT feed_id FROM $table
3875                         WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id' LIMIT 1");
3876
3877                 if (db_num_rows($result) == 1) {
3878                         db_query($link, "UPDATE $table SET
3879                                 value = '$unread', updated = NOW() WHERE
3880                                 feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3881
3882                 } else {
3883                         db_query($link, "INSERT INTO $table
3884                                 (feed_id, value, owner_uid, updated)
3885                                 VALUES
3886                                 ($feed_id, $unread, $owner_uid, NOW())");
3887                 }
3888
3889                 db_query($link, "COMMIT");
3890
3891                 if ($feed_id > 0 && $prev_unread != $unread) {
3892
3893                         if (!$is_cat) {
3894
3895                                 /* Update parent category */
3896
3897                                 if ($update_pcat) {
3898
3899                                         $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
3900                                                 WHERE owner_uid = '$owner_uid' AND id = '$feed_id'");
3901
3902                                         $cat_id = (int) db_fetch_result($result, 0, "cat_id");
3903
3904                                         ccache_update($link, $cat_id, $owner_uid, true);
3905
3906                                 }
3907                         }
3908                 } else if ($feed_id < 0) {
3909                         ccache_update_all($link, $owner_uid);
3910                 }
3911
3912                 return $unread;
3913         }
3914
3915         /* function ccache_cleanup($link, $owner_uid) {
3916
3917                 if (DB_TYPE == "pgsql") {
3918                         db_query($link, "DELETE FROM ttrss_counters_cache AS c1 WHERE
3919                                 (SELECT count(*) FROM ttrss_counters_cache AS c2
3920                                         WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
3921                                         AND owner_uid = '$owner_uid'");
3922
3923                         db_query($link, "DELETE FROM ttrss_cat_counters_cache AS c1 WHERE
3924                                 (SELECT count(*) FROM ttrss_cat_counters_cache AS c2
3925                                         WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
3926                                         AND owner_uid = '$owner_uid'");
3927                 } else {
3928                         db_query($link, "DELETE c1 FROM
3929                                         ttrss_counters_cache AS c1,
3930                                         ttrss_counters_cache AS c2
3931                                 WHERE
3932                                         c1.owner_uid = '$owner_uid' AND
3933                                         c1.owner_uid = c2.owner_uid AND
3934                                         c1.feed_id = c2.feed_id");
3935
3936                         db_query($link, "DELETE c1 FROM
3937                                         ttrss_cat_counters_cache AS c1,
3938                                         ttrss_cat_counters_cache AS c2
3939                                 WHERE
3940                                         c1.owner_uid = '$owner_uid' AND
3941                                         c1.owner_uid = c2.owner_uid AND
3942                                         c1.feed_id = c2.feed_id");
3943
3944                 }
3945         } */
3946
3947         function label_find_id($link, $label, $owner_uid) {
3948                 $result = db_query($link,
3949                         "SELECT id FROM ttrss_labels2 WHERE caption = '$label'
3950                                 AND owner_uid = '$owner_uid' LIMIT 1");
3951
3952                 if (db_num_rows($result) == 1) {
3953                         return db_fetch_result($result, 0, "id");
3954                 } else {
3955                         return 0;
3956                 }
3957         }
3958
3959         function get_article_labels($link, $id) {
3960                 $rv = array();
3961
3962
3963                 $result = db_query($link, "SELECT label_cache FROM
3964                         ttrss_user_entries WHERE ref_id = '$id' AND owner_uid = " .
3965                         $_SESSION["uid"]);
3966
3967                 $label_cache = db_fetch_result($result, 0, "label_cache");
3968
3969                 if ($label_cache) {
3970
3971                         $label_cache = json_decode($label_cache, true);
3972
3973                         if ($label_cache["no-labels"] == 1)
3974                                 return $rv;
3975                         else
3976                                 return $label_cache;
3977                 }
3978
3979                 $result = db_query($link,
3980                         "SELECT DISTINCT label_id,caption,fg_color,bg_color
3981                                 FROM ttrss_labels2, ttrss_user_labels2
3982                         WHERE id = label_id
3983                                 AND article_id = '$id'
3984                                 AND owner_uid = ".$_SESSION["uid"] . "
3985                         ORDER BY caption");
3986
3987                 while ($line = db_fetch_assoc($result)) {
3988                         $rk = array($line["label_id"], $line["caption"], $line["fg_color"],
3989                                 $line["bg_color"]);
3990                         array_push($rv, $rk);
3991                 }
3992
3993                 if (count($rv) > 0)
3994                         label_update_cache($link, $id, $rv);
3995                 else
3996                         label_update_cache($link, $id, array("no-labels" => 1));
3997
3998                 return $rv;
3999         }
4000
4001
4002         function label_find_caption($link, $label, $owner_uid) {
4003                 $result = db_query($link,
4004                         "SELECT caption FROM ttrss_labels2 WHERE id = '$label'
4005                                 AND owner_uid = '$owner_uid' LIMIT 1");
4006
4007                 if (db_num_rows($result) == 1) {
4008                         return db_fetch_result($result, 0, "caption");
4009                 } else {
4010                         return "";
4011                 }
4012         }
4013
4014         function label_update_cache($link, $id, $labels = false, $force = false) {
4015
4016                 if ($force)
4017                         label_clear_cache($link, $id);
4018
4019                 if (!$labels)
4020                         $labels = get_article_labels($link, $id);
4021
4022                 $labels = db_escape_string(json_encode($labels));
4023
4024                 db_query($link, "UPDATE ttrss_user_entries SET
4025                         label_cache = '$labels' WHERE ref_id = '$id'");
4026
4027         }
4028
4029         function label_clear_cache($link, $id) {
4030
4031                 db_query($link, "UPDATE ttrss_user_entries SET
4032                         label_cache = '' WHERE ref_id = '$id'");
4033
4034         }
4035
4036         function label_remove_article($link, $id, $label, $owner_uid) {
4037
4038                 $label_id = label_find_id($link, $label, $owner_uid);
4039
4040                 if (!$label_id) return;
4041
4042                 $result = db_query($link,
4043                         "DELETE FROM ttrss_user_labels2
4044                         WHERE
4045                                 label_id = '$label_id' AND
4046                                 article_id = '$id'");
4047
4048                 label_clear_cache($link, $id);
4049         }
4050
4051         function label_add_article($link, $id, $label, $owner_uid) {
4052
4053                 $label_id = label_find_id($link, $label, $owner_uid);
4054
4055                 if (!$label_id) return;
4056
4057                 $result = db_query($link,
4058                         "SELECT
4059                                 article_id FROM ttrss_labels2, ttrss_user_labels2
4060                         WHERE
4061                                 label_id = id AND
4062                                 label_id = '$label_id' AND
4063                                 article_id = '$id' AND owner_uid = '$owner_uid'
4064                         LIMIT 1");
4065
4066                 if (db_num_rows($result) == 0) {
4067                         db_query($link, "INSERT INTO ttrss_user_labels2
4068                                 (label_id, article_id) VALUES ('$label_id', '$id')");
4069                 }
4070
4071                 label_clear_cache($link, $id);
4072
4073         }
4074
4075         function label_remove($link, $id, $owner_uid) {
4076                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4077
4078                 db_query($link, "BEGIN");
4079
4080                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
4081                         WHERE id = '$id'");
4082
4083                 $caption = db_fetch_result($result, 0, "caption");
4084
4085                 $result = db_query($link, "DELETE FROM ttrss_labels2 WHERE id = '$id'
4086                         AND owner_uid = " . $owner_uid);
4087
4088                 if (db_affected_rows($link, $result) != 0 && $caption) {
4089
4090                         /* Remove access key for the label */
4091
4092                         $ext_id = -11 - $id;
4093
4094                         db_query($link, "DELETE FROM ttrss_access_keys WHERE
4095                                 feed_id = '$ext_id' AND owner_uid = $owner_uid");
4096
4097                         /* Disable filters that reference label being removed */
4098
4099                         db_query($link, "UPDATE ttrss_filters SET
4100                                 enabled = false WHERE action_param = '$caption'
4101                                         AND action_id = 7
4102                                         AND owner_uid = " . $owner_uid);
4103
4104                         /* Remove cached data */
4105
4106                         db_query($link, "UPDATE ttrss_user_entries SET label_cache = ''
4107                                 WHERE label_cache LIKE '%$caption%' AND owner_uid = " . $owner_uid);
4108
4109                 }
4110
4111                 db_query($link, "COMMIT");
4112         }
4113
4114         function label_create($link, $caption, $fg_color = '', $bg_color = '', $owner_uid) {
4115
4116                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
4117
4118                 db_query($link, "BEGIN");
4119
4120                 $result = false;
4121
4122                 $result = db_query($link, "SELECT id FROM ttrss_labels2
4123                         WHERE caption = '$caption' AND owner_uid = $owner_uid");
4124
4125                 if (db_num_rows($result) == 0) {
4126                         $result = db_query($link,
4127                                 "INSERT INTO ttrss_labels2 (caption,owner_uid,fg_color,bg_color)
4128                                         VALUES ('$caption', '$owner_uid', '$fg_color', '$bg_color')");
4129
4130                         $result = db_affected_rows($link, $result) != 0;
4131                 }
4132
4133                 db_query($link, "COMMIT");
4134
4135                 return $result;
4136         }
4137
4138         function format_tags_string($tags, $id) {
4139
4140                 $tags_str = "";
4141                 $tags_nolinks_str = "";
4142
4143                 $num_tags = 0;
4144
4145                 $tag_limit = 6;
4146
4147                 $formatted_tags = array();
4148
4149                 foreach ($tags as $tag) {
4150                         $num_tags++;
4151                         $tag_escaped = str_replace("'", "\\'", $tag);
4152
4153                         if (mb_strlen($tag) > 30) {
4154                                 $tag = truncate_string($tag, 30);
4155                         }
4156
4157                         $tag_str = "<a href=\"javascript:viewfeed('$tag_escaped')\">$tag</a>";
4158
4159                         array_push($formatted_tags, $tag_str);
4160
4161                         $tmp_tags_str = implode(", ", $formatted_tags);
4162
4163                         if ($num_tags == $tag_limit || mb_strlen($tmp_tags_str) > 150) {
4164                                 break;
4165                         }
4166                 }
4167
4168                 $tags_str = implode(", ", $formatted_tags);
4169
4170                 if ($num_tags < count($tags)) {
4171                         $tags_str .= ", &hellip;";
4172                 }
4173
4174                 if ($num_tags == 0) {
4175                         $tags_str = __("no tags");
4176                 }
4177
4178                 return $tags_str;
4179
4180         }
4181
4182         function format_article_labels($labels, $id) {
4183
4184                 $labels_str = "";
4185
4186                 foreach ($labels as $l) {
4187                         $labels_str .= sprintf("<span class='hlLabelRef'
4188                                 style='color : %s; background-color : %s'>%s</span>",
4189                                         $l[2], $l[3], $l[1]);
4190                         }
4191
4192                 return $labels_str;
4193
4194         }
4195
4196         function format_article_note($id, $note) {
4197
4198                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
4199                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
4200                         __('(edit note)')."</div>$note</div>";
4201
4202                 return $str;
4203         }
4204
4205         function toggle_collapse_cat($link, $cat_id, $mode) {
4206                 if ($cat_id > 0) {
4207                         $mode = bool_to_sql_bool($mode);
4208
4209                         db_query($link, "UPDATE ttrss_feed_categories SET
4210                                 collapsed = $mode WHERE id = '$cat_id' AND owner_uid = " .
4211                                 $_SESSION["uid"]);
4212                 } else {
4213                         $pref_name = '';
4214
4215                         switch ($cat_id) {
4216                         case -1:
4217                                 $pref_name = '_COLLAPSED_SPECIAL';
4218                                 break;
4219                         case -2:
4220                                 $pref_name = '_COLLAPSED_LABELS';
4221                                 break;
4222                         case 0:
4223                                 $pref_name = '_COLLAPSED_UNCAT';
4224                                 break;
4225                         }
4226
4227                         if ($pref_name) {
4228                                 if ($mode) {
4229                                         set_pref($link, $pref_name, 'true');
4230                                 } else {
4231                                         set_pref($link, $pref_name, 'false');
4232                                 }
4233                         }
4234                 }
4235         }
4236
4237         function remove_feed($link, $id, $owner_uid) {
4238
4239                 if ($id > 0) {
4240
4241                         /* save starred articles in Archived feed */
4242
4243                         db_query($link, "BEGIN");
4244
4245                         /* prepare feed if necessary */
4246
4247                         $result = db_query($link, "SELECT id FROM ttrss_archived_feeds
4248                                 WHERE id = '$id'");
4249
4250                         if (db_num_rows($result) == 0) {
4251                                 db_query($link, "INSERT INTO ttrss_archived_feeds
4252                                         (id, owner_uid, title, feed_url, site_url)
4253                                 SELECT id, owner_uid, title, feed_url, site_url from ttrss_feeds
4254                                 WHERE id = '$id'");
4255                         }
4256
4257                         db_query($link, "UPDATE ttrss_user_entries SET feed_id = NULL,
4258                                 orig_feed_id = '$id' WHERE feed_id = '$id' AND
4259                                         marked = true AND owner_uid = $owner_uid");
4260
4261                         /* Remove access key for the feed */
4262
4263                         db_query($link, "DELETE FROM ttrss_access_keys WHERE
4264                                 feed_id = '$id' AND owner_uid = $owner_uid");
4265
4266                         /* remove the feed */
4267
4268                         db_query($link, "DELETE FROM ttrss_feeds
4269                                         WHERE id = '$id' AND owner_uid = $owner_uid");
4270
4271                         db_query($link, "COMMIT");
4272
4273                         if (file_exists(ICONS_DIR . "/$id.ico")) {
4274                                 unlink(ICONS_DIR . "/$id.ico");
4275                         }
4276
4277                         ccache_remove($link, $id, $owner_uid);
4278
4279                 } else {
4280                         label_remove($link, -11-$id, $owner_uid);
4281                         ccache_remove($link, -11-$id, $owner_uid);
4282                 }
4283         }
4284
4285         function get_feed_category($link, $feed_cat, $parent_cat_id = false) {
4286                 if ($parent_cat_id) {
4287                         $parent_qpart = "parent_cat = '$parent_cat_id'";
4288                         $parent_insert = "'$parent_cat_id'";
4289                 } else {
4290                         $parent_qpart = "parent_cat IS NULL";
4291                         $parent_insert = "NULL";
4292                 }
4293
4294                 $result = db_query($link,
4295                         "SELECT id FROM ttrss_feed_categories
4296                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
4297
4298                 if (db_num_rows($result) == 0) {
4299                         return false;
4300                 } else {
4301                         return db_fetch_result($result, 0, "id");
4302                 }
4303         }
4304
4305         function add_feed_category($link, $feed_cat, $parent_cat_id = false) {
4306
4307                 if (!$feed_cat) return false;
4308
4309                 db_query($link, "BEGIN");
4310
4311                 if ($parent_cat_id) {
4312                         $parent_qpart = "parent_cat = '$parent_cat_id'";
4313                         $parent_insert = "'$parent_cat_id'";
4314                 } else {
4315                         $parent_qpart = "parent_cat IS NULL";
4316                         $parent_insert = "NULL";
4317                 }
4318
4319                 $result = db_query($link,
4320                         "SELECT id FROM ttrss_feed_categories
4321                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
4322
4323                 if (db_num_rows($result) == 0) {
4324
4325                         $result = db_query($link,
4326                                 "INSERT INTO ttrss_feed_categories (owner_uid,title,parent_cat)
4327                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat', $parent_insert)");
4328
4329                         db_query($link, "COMMIT");
4330
4331                         return true;
4332                 }
4333
4334                 return false;
4335         }
4336
4337         function remove_feed_category($link, $id, $owner_uid) {
4338
4339                 db_query($link, "DELETE FROM ttrss_feed_categories
4340                         WHERE id = '$id' AND owner_uid = $owner_uid");
4341
4342                 ccache_remove($link, $id, $owner_uid, true);
4343         }
4344
4345         function archive_article($link, $id, $owner_uid) {
4346                 db_query($link, "BEGIN");
4347
4348                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
4349                         WHERE ref_id = '$id' AND owner_uid = $owner_uid");
4350
4351                 if (db_num_rows($result) != 0) {
4352
4353                         /* prepare the archived table */
4354
4355                         $feed_id = (int) db_fetch_result($result, 0, "feed_id");
4356
4357                         if ($feed_id) {
4358                                 $result = db_query($link, "SELECT id FROM ttrss_archived_feeds
4359                                         WHERE id = '$feed_id'");
4360
4361                                 if (db_num_rows($result) == 0) {
4362                                         db_query($link, "INSERT INTO ttrss_archived_feeds
4363                                                 (id, owner_uid, title, feed_url, site_url)
4364                                         SELECT id, owner_uid, title, feed_url, site_url from ttrss_feeds
4365                                         WHERE id = '$feed_id'");
4366                                 }
4367
4368                                 db_query($link, "UPDATE ttrss_user_entries
4369                                         SET orig_feed_id = feed_id, feed_id = NULL
4370                                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
4371                         }
4372                 }
4373
4374                 db_query($link, "COMMIT");
4375         }
4376
4377         function getArticleFeed($link, $id) {
4378                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
4379                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
4380
4381                 if (db_num_rows($result) != 0) {
4382                         return db_fetch_result($result, 0, "feed_id");
4383                 } else {
4384                         return 0;
4385                 }
4386         }
4387
4388         /**
4389          * Fixes incomplete URLs by prepending "http://".
4390          * Also replaces feed:// with http://, and
4391          * prepends a trailing slash if the url is a domain name only.
4392          *
4393          * @param string $url Possibly incomplete URL
4394          *
4395          * @return string Fixed URL.
4396          */
4397         function fix_url($url) {
4398                 if (strpos($url, '://') === false) {
4399                         $url = 'http://' . $url;
4400                 } else if (substr($url, 0, 5) == 'feed:') {
4401                         $url = 'http:' . substr($url, 5);
4402                 }
4403
4404                 //prepend slash if the URL has no slash in it
4405                 // "http://www.example" -> "http://www.example/"
4406                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
4407                         $url .= '/';
4408                 }
4409
4410                 if ($url != "http:///")
4411                         return $url;
4412                 else
4413                         return '';
4414         }
4415
4416         function validate_feed_url($url) {
4417                 $parts = parse_url($url);
4418
4419                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
4420
4421         }
4422
4423         function get_article_enclosures($link, $id) {
4424
4425                 $query = "SELECT * FROM ttrss_enclosures
4426                         WHERE post_id = '$id' AND content_url != ''";
4427
4428                 $rv = array();
4429
4430                 $result = db_query($link, $query);
4431
4432                 if (db_num_rows($result) > 0) {
4433                         while ($line = db_fetch_assoc($result)) {
4434                                 array_push($rv, $line);
4435                         }
4436                 }
4437
4438                 return $rv;
4439         }
4440
4441         function api_get_feeds($link, $cat_id, $unread_only, $limit, $offset) {
4442
4443                         $feeds = array();
4444
4445                         /* Labels */
4446
4447                         if ($cat_id == -4 || $cat_id == -2) {
4448                                 $counters = getLabelCounters($link, true);
4449
4450                                 foreach (array_values($counters) as $cv) {
4451
4452                                         $unread = $cv["counter"];
4453
4454                                         if ($unread || !$unread_only) {
4455
4456                                                 $row = array(
4457                                                                 "id" => $cv["id"],
4458                                                                 "title" => $cv["description"],
4459                                                                 "unread" => $cv["counter"],
4460                                                                 "cat_id" => -2,
4461                                                         );
4462
4463                                                 array_push($feeds, $row);
4464                                         }
4465                                 }
4466                         }
4467
4468                         /* Virtual feeds */
4469
4470                         if ($cat_id == -4 || $cat_id == -1) {
4471                                 foreach (array(-1, -2, -3, -4, 0) as $i) {
4472                                         $unread = getFeedUnread($link, $i);
4473
4474                                         if ($unread || !$unread_only) {
4475                                                 $title = getFeedTitle($link, $i);
4476
4477                                                 $row = array(
4478                                                                 "id" => $i,
4479                                                                 "title" => $title,
4480                                                                 "unread" => $unread,
4481                                                                 "cat_id" => -1,
4482                                                         );
4483                                                 array_push($feeds, $row);
4484                                         }
4485
4486                                 }
4487                         }
4488
4489                         /* Real feeds */
4490
4491                         if ($limit) {
4492                                 $limit_qpart = "LIMIT $limit OFFSET $offset";
4493                         } else {
4494                                 $limit_qpart = "";
4495                         }
4496
4497                         if ($cat_id == -4 || $cat_id == -3) {
4498                                 $result = db_query($link, "SELECT
4499                                         id, feed_url, cat_id, title, order_id, ".
4500                                                 SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
4501                                                 FROM ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"] .
4502                                                 " ORDER BY cat_id, title " . $limit_qpart);
4503                         } else {
4504
4505                                 if ($cat_id)
4506                                         $cat_qpart = "cat_id = '$cat_id'";
4507                                 else
4508                                         $cat_qpart = "cat_id IS NULL";
4509
4510                                 $result = db_query($link, "SELECT
4511                                         id, feed_url, cat_id, title, order_id, ".
4512                                                 SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
4513                                                 FROM ttrss_feeds WHERE
4514                                                 $cat_qpart AND owner_uid = " . $_SESSION["uid"] .
4515                                                 " ORDER BY cat_id, title " . $limit_qpart);
4516                         }
4517
4518                         while ($line = db_fetch_assoc($result)) {
4519
4520                                 $unread = getFeedUnread($link, $line["id"]);
4521
4522                                 $has_icon = feed_has_icon($line['id']);
4523
4524                                 if ($unread || !$unread_only) {
4525
4526                                         $row = array(
4527                                                         "feed_url" => $line["feed_url"],
4528                                                         "title" => $line["title"],
4529                                                         "id" => (int)$line["id"],
4530                                                         "unread" => (int)$unread,
4531                                                         "has_icon" => $has_icon,
4532                                                         "cat_id" => (int)$line["cat_id"],
4533                                                         "last_updated" => strtotime($line["last_updated"]),
4534                                                         "order_id" => (int) $line["order_id"],
4535                                                 );
4536
4537                                         array_push($feeds, $row);
4538                                 }
4539                         }
4540
4541                 return $feeds;
4542         }
4543
4544         function api_get_headlines($link, $feed_id, $limit, $offset,
4545                                 $filter, $is_cat, $show_excerpt, $show_content, $view_mode, $order,
4546                                 $include_attachments, $since_id,
4547                                 $search = "", $search_mode = "", $match_on = "") {
4548
4549                         $qfh_ret = queryFeedHeadlines($link, $feed_id, $limit,
4550                                 $view_mode, $is_cat, $search, $search_mode, $match_on,
4551                                 $order, $offset, 0, false, $since_id);
4552
4553                         $result = $qfh_ret[0];
4554                         $feed_title = $qfh_ret[1];
4555
4556                         $headlines = array();
4557
4558                         while ($line = db_fetch_assoc($result)) {
4559                                 $is_updated = ($line["last_read"] == "" &&
4560                                         ($line["unread"] != "t" && $line["unread"] != "1"));
4561
4562                                 $tags = explode(",", $line["tag_cache"]);
4563                                 $labels = json_decode($line["label_cache"], true);
4564
4565                                 //if (!$tags) $tags = get_article_tags($link, $line["id"]);
4566                                 //if (!$labels) $labels = get_article_labels($link, $line["id"]);
4567
4568                                 $headline_row = array(
4569                                                 "id" => (int)$line["id"],
4570                                                 "unread" => sql_bool_to_bool($line["unread"]),
4571                                                 "marked" => sql_bool_to_bool($line["marked"]),
4572                                                 "published" => sql_bool_to_bool($line["published"]),
4573                                                 "updated" => strtotime($line["updated"]),
4574                                                 "is_updated" => $is_updated,
4575                                                 "title" => $line["title"],
4576                                                 "link" => $line["link"],
4577                                                 "feed_id" => $line["feed_id"],
4578                                                 "tags" => $tags,
4579                                         );
4580
4581                                         if ($include_attachments)
4582                                                 $headline_row['attachments'] = get_article_enclosures($link,
4583                                                         $line['id']);
4584
4585                                 if ($show_excerpt) {
4586                                         $excerpt = truncate_string(strip_tags($line["content_preview"]), 100);
4587                                         $headline_row["excerpt"] = $excerpt;
4588                                 }
4589
4590                                 if ($show_content) {
4591                                         $headline_row["content"] = $line["content_preview"];
4592                                 }
4593
4594                                 // unify label output to ease parsing
4595                                 if ($labels["no-labels"] == 1) $labels = array();
4596
4597                                 $headline_row["labels"] = $labels;
4598
4599                                 $headline_row["feed_title"] = $line["feed_title"];
4600
4601                                 array_push($headlines, $headline_row);
4602                         }
4603
4604                         return $headlines;
4605         }
4606
4607         function generate_error_feed($link, $error) {
4608                 $reply = array();
4609
4610                 $reply['headlines']['id'] = -6;
4611                 $reply['headlines']['is_cat'] = false;
4612
4613                 $reply['headlines']['toolbar'] = '';
4614                 $reply['headlines']['content'] = "<div class='whiteBox'>". $error . "</div>";
4615
4616                 $reply['headlines-info'] = array("count" => 0,
4617                         "vgroup_last_feed" => '',
4618                         "unread" => 0,
4619                         "disable_cache" => true);
4620
4621                 return $reply;
4622         }
4623
4624
4625         function generate_dashboard_feed($link) {
4626                 $reply = array();
4627
4628                 $reply['headlines']['id'] = -5;
4629                 $reply['headlines']['is_cat'] = false;
4630
4631                 $reply['headlines']['toolbar'] = '';
4632                 $reply['headlines']['content'] = "<div class='whiteBox'>".__('No feed selected.');
4633
4634                 $reply['headlines']['content'] .= "<p class=\"small\"><span class=\"insensitive\">";
4635
4636                 $result = db_query($link, "SELECT ".SUBSTRING_FOR_DATE."(MAX(last_updated), 1, 19) AS last_updated FROM ttrss_feeds
4637                         WHERE owner_uid = " . $_SESSION['uid']);
4638
4639                 $last_updated = db_fetch_result($result, 0, "last_updated");
4640                 $last_updated = make_local_datetime($link, $last_updated, false);
4641
4642                 $reply['headlines']['content'] .= sprintf(__("Feeds last updated at %s"), $last_updated);
4643
4644                 $result = db_query($link, "SELECT COUNT(id) AS num_errors
4645                         FROM ttrss_feeds WHERE last_error != '' AND owner_uid = ".$_SESSION["uid"]);
4646
4647                 $num_errors = db_fetch_result($result, 0, "num_errors");
4648
4649                 if ($num_errors > 0) {
4650                         $reply['headlines']['content'] .= "<br/>";
4651                         $reply['headlines']['content'] .= "<a class=\"insensitive\" href=\"#\" onclick=\"showFeedsWithErrors()\">".
4652                                 __('Some feeds have update errors (click for details)')."</a>";
4653                 }
4654                 $reply['headlines']['content'] .= "</span></p>";
4655
4656                 $reply['headlines-info'] = array("count" => 0,
4657                         "vgroup_last_feed" => '',
4658                         "unread" => 0,
4659                         "disable_cache" => true);
4660
4661                 return $reply;
4662         }
4663
4664         function save_email_address($link, $email) {
4665                 // FIXME: implement persistent storage of emails
4666
4667                 if (!$_SESSION['stored_emails'])
4668                         $_SESSION['stored_emails'] = array();
4669
4670                 if (!in_array($email, $_SESSION['stored_emails']))
4671                         array_push($_SESSION['stored_emails'], $email);
4672         }
4673
4674         function update_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
4675                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4676
4677                 $sql_is_cat = bool_to_sql_bool($is_cat);
4678
4679                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
4680                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
4681                         AND owner_uid = " . $owner_uid);
4682
4683                 if (db_num_rows($result) == 1) {
4684                         $key = db_escape_string(sha1(uniqid(rand(), true)));
4685
4686                         db_query($link, "UPDATE ttrss_access_keys SET access_key = '$key'
4687                                 WHERE feed_id = '$feed_id' AND is_cat = $sql_is_cat
4688                                 AND owner_uid = " . $owner_uid);
4689
4690                         return $key;
4691
4692                 } else {
4693                         return get_feed_access_key($link, $feed_id, $is_cat, $owner_uid);
4694                 }
4695         }
4696
4697         function get_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
4698
4699                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4700
4701                 $sql_is_cat = bool_to_sql_bool($is_cat);
4702
4703                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
4704                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
4705                         AND owner_uid = " . $owner_uid);
4706
4707                 if (db_num_rows($result) == 1) {
4708                         return db_fetch_result($result, 0, "access_key");
4709                 } else {
4710                         $key = db_escape_string(sha1(uniqid(rand(), true)));
4711
4712                         $result = db_query($link, "INSERT INTO ttrss_access_keys
4713                                 (access_key, feed_id, is_cat, owner_uid)
4714                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
4715
4716                         return $key;
4717                 }
4718                 return false;
4719         }
4720
4721         /**
4722          * Extracts RSS/Atom feed URLs from the given HTML URL.
4723          *
4724          * @param string $url HTML page URL
4725          *
4726          * @return array Array of feeds. Key is the full URL, value the title
4727          */
4728         function get_feeds_from_html($url, $login = false, $pass = false)
4729         {
4730                 $url     = fix_url($url);
4731                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
4732
4733                 libxml_use_internal_errors(true);
4734
4735                 $content = @fetch_file_contents($url, false, $login, $pass);
4736
4737                 $doc = new DOMDocument();
4738                 $doc->loadHTML($content);
4739                 $xpath = new DOMXPath($doc);
4740                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
4741                 $feedUrls = array();
4742                 foreach ($entries as $entry) {
4743                         if ($entry->hasAttribute('href')) {
4744                                 $title = $entry->getAttribute('title');
4745                                 if ($title == '') {
4746                                         $title = $entry->getAttribute('type');
4747                                 }
4748                                 $feedUrl = rewrite_relative_url(
4749                                         $baseUrl, $entry->getAttribute('href')
4750                                 );
4751                                 $feedUrls[$feedUrl] = $title;
4752                         }
4753                 }
4754                 return $feedUrls;
4755         }
4756
4757         /**
4758          * Checks if the content behind the given URL is a HTML file
4759          *
4760          * @param string $url URL to check
4761          *
4762          * @return boolean True if the URL contains HTML content
4763          */
4764         function url_is_html($url, $login = false, $pass = false) {
4765                 $content = substr(fetch_file_contents($url, false, $login, $pass), 0, 1000);
4766
4767                 if (stripos($content, '<html>') === false
4768                         && stripos($content, '<html ') === false
4769                 ) {
4770                         return false;
4771                 }
4772
4773                 return true;
4774         }
4775
4776         function print_label_select($link, $name, $value, $attributes = "") {
4777
4778                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
4779                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
4780
4781                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
4782                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
4783
4784                 while ($line = db_fetch_assoc($result)) {
4785
4786                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
4787
4788                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
4789                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
4790
4791                 }
4792
4793 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
4794
4795                 print "</select>";
4796
4797
4798         }
4799
4800         function format_article_enclosures($link, $id, $always_display_enclosures,
4801                                         $article_content) {
4802
4803                 $result = get_article_enclosures($link, $id);
4804                 $rv = '';
4805
4806                 if (count($result) > 0) {
4807
4808                         $entries_html = array();
4809                         $entries = array();
4810
4811                         foreach ($result as $line) {
4812
4813                                 $url = $line["content_url"];
4814                                 $ctype = $line["content_type"];
4815
4816                                 if (!$ctype) $ctype = __("unknown type");
4817
4818                                 $filename = substr($url, strrpos($url, "/")+1);
4819
4820 #                               $player = format_inline_player($link, $url, $ctype);
4821
4822 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
4823 #                                       $filename . " (" . $ctype . ")" . "</a>";
4824
4825                                 $entry = "<div onclick=\"window.open('".htmlspecialchars($url)."')\"
4826                                         dojoType=\"dijit.MenuItem\">$filename ($ctype)</div>";
4827
4828                                 array_push($entries_html, $entry);
4829
4830                                 $entry = array();
4831
4832                                 $entry["type"] = $ctype;
4833                                 $entry["filename"] = $filename;
4834                                 $entry["url"] = $url;
4835
4836                                 array_push($entries, $entry);
4837                         }
4838
4839                         if (!get_pref($link, "STRIP_IMAGES")) {
4840                                 if ($always_display_enclosures ||
4841                                                         !preg_match("/<img/i", $article_content)) {
4842
4843                                         foreach ($entries as $entry) {
4844
4845                                                 if (preg_match("/image/", $entry["type"]) ||
4846                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
4847
4848                                                                 $rv .= "<p><img
4849                                                                 alt=\"".htmlspecialchars($entry["filename"])."\"
4850                                                                 src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
4851
4852                                                 }
4853                                         }
4854                                 }
4855                         }
4856
4857                         $rv .= "<div dojoType=\"dijit.form.DropDownButton\">".
4858                                 "<span>" . __('Attachments')."</span>";
4859                         $rv .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
4860
4861                         foreach ($entries_html as $entry) { $rv .= $entry; };
4862
4863                         $rv .= "</div></div>";
4864                 }
4865
4866                 return $rv;
4867         }
4868
4869         function getLastArticleId($link) {
4870                 $result = db_query($link, "SELECT MAX(ref_id) AS id FROM ttrss_user_entries
4871                         WHERE owner_uid = " . $_SESSION["uid"]);
4872
4873                 if (db_num_rows($result) == 1) {
4874                         return db_fetch_result($result, 0, "id");
4875                 } else {
4876                         return -1;
4877                 }
4878         }
4879
4880         function build_url($parts) {
4881                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
4882         }
4883
4884         /**
4885          * Converts a (possibly) relative URL to a absolute one.
4886          *
4887          * @param string $url     Base URL (i.e. from where the document is)
4888          * @param string $rel_url Possibly relative URL in the document
4889          *
4890          * @return string Absolute URL
4891          */
4892         function rewrite_relative_url($url, $rel_url) {
4893                 if (strpos($rel_url, "magnet:") === 0) {
4894                         return $rel_url;
4895                 } else if (strpos($rel_url, "://") !== false) {
4896                         return $rel_url;
4897                 } else if (strpos($rel_url, "//") === 0) {
4898                         # protocol-relative URL (rare but they exist)
4899                         return $rel_url;
4900                 } else if (strpos($rel_url, "/") === 0)
4901                 {
4902                         $parts = parse_url($url);
4903                         $parts['path'] = $rel_url;
4904
4905                         return build_url($parts);
4906
4907                 } else {
4908                         $parts = parse_url($url);
4909                         if (!isset($parts['path'])) {
4910                                 $parts['path'] = '/';
4911                         }
4912                         $dir = $parts['path'];
4913                         if (substr($dir, -1) !== '/') {
4914                                 $dir = dirname($parts['path']);
4915                                 $dir !== '/' && $dir .= '/';
4916                         }
4917                         $parts['path'] = $dir . $rel_url;
4918
4919                         return build_url($parts);
4920                 }
4921         }
4922
4923         function sphinx_search($query, $offset = 0, $limit = 30) {
4924                 require_once 'lib/sphinxapi.php';
4925
4926                 $sphinxClient = new SphinxClient();
4927
4928                 $sphinxClient->SetServer('localhost', 9312);
4929                 $sphinxClient->SetConnectTimeout(1);
4930
4931                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
4932                         'feed_title' => 20));
4933
4934                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
4935                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
4936                 $sphinxClient->SetLimits($offset, $limit, 1000);
4937                 $sphinxClient->SetArrayResult(false);
4938                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
4939
4940                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
4941
4942                 $ids = array();
4943
4944                 if (is_array($result['matches'])) {
4945                         foreach (array_keys($result['matches']) as $int_id) {
4946                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
4947                                 array_push($ids, $ref_id);
4948                         }
4949                 }
4950
4951                 return $ids;
4952         }
4953
4954         function cleanup_tags($link, $days = 14, $limit = 1000) {
4955
4956                 if (DB_TYPE == "pgsql") {
4957                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
4958                 } else if (DB_TYPE == "mysql") {
4959                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
4960                 }
4961
4962                 $tags_deleted = 0;
4963
4964                 while ($limit > 0) {
4965                         $limit_part = 500;
4966
4967                         $query = "SELECT ttrss_tags.id AS id
4968                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
4969                                 WHERE post_int_id = int_id AND $interval_query AND
4970                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
4971
4972                         $result = db_query($link, $query);
4973
4974                         $ids = array();
4975
4976                         while ($line = db_fetch_assoc($result)) {
4977                                 array_push($ids, $line['id']);
4978                         }
4979
4980                         if (count($ids) > 0) {
4981                                 $ids = join(",", $ids);
4982                                 print ".";
4983
4984                                 $tmp_result = db_query($link, "DELETE FROM ttrss_tags WHERE id IN ($ids)");
4985                                 $tags_deleted += db_affected_rows($link, $tmp_result);
4986                         } else {
4987                                 break;
4988                         }
4989
4990                         $limit -= $limit_part;
4991                 }
4992
4993                 print "\n";
4994
4995                 return $tags_deleted;
4996         }
4997
4998         function print_user_stylesheet($link) {
4999                 $value = get_pref($link, 'USER_STYLESHEET');
5000
5001                 if ($value) {
5002                         print "<style type=\"text/css\">";
5003                         print str_replace("<br/>", "\n", $value);
5004                         print "</style>";
5005                 }
5006
5007         }
5008
5009 /*      function rewrite_urls($line) {
5010                 global $url_regex;
5011
5012                 $urls = null;
5013
5014                 $result = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
5015                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $line);
5016
5017                 return $result;
5018         } */
5019
5020         function rewrite_urls($html) {
5021                 libxml_use_internal_errors(true);
5022
5023                 $charset_hack = '<head>
5024                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
5025                 </head>';
5026
5027                 $doc = new DOMDocument();
5028                 $doc->loadHTML($charset_hack . $html);
5029                 $xpath = new DOMXPath($doc);
5030
5031                 $entries = $xpath->query('//*/text()');
5032
5033                 foreach ($entries as $entry) {
5034                         if (strstr($entry->wholeText, "://") !== false) {
5035                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
5036                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
5037
5038                                 if ($text != $entry->wholeText) {
5039                                         $cdoc = new DOMDocument();
5040                                         $cdoc->loadHTML($charset_hack . $text);
5041
5042
5043                                         foreach ($cdoc->childNodes as $cnode) {
5044                                                 $cnode = $doc->importNode($cnode, true);
5045
5046                                                 if ($cnode) {
5047                                                         $entry->parentNode->insertBefore($cnode);
5048                                                 }
5049                                         }
5050
5051                                         $entry->parentNode->removeChild($entry);
5052
5053                                 }
5054                         }
5055                 }
5056
5057                 $node = $doc->getElementsByTagName('body')->item(0);
5058
5059                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
5060                 if ($node)
5061                         return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
5062                 else
5063                         return $html;
5064         }
5065
5066         function filter_to_sql($filter) {
5067                 $query = "";
5068
5069                 $regexp_valid = preg_match('/' . $filter['reg_exp'] . '/',
5070                         $filter['reg_exp']) !== FALSE;
5071
5072                 if ($regexp_valid) {
5073
5074                         if (DB_TYPE == "pgsql")
5075                                 $reg_qpart = "~";
5076                         else
5077                                 $reg_qpart = "REGEXP";
5078
5079                         switch ($filter["type"]) {
5080                                 case "title":
5081                                         $query = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
5082                                                 $filter['reg_exp'] . "')";
5083                                         break;
5084                                 case "content":
5085                                         $query = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
5086                                                 $filter['reg_exp'] . "')";
5087                                         break;
5088                                 case "both":
5089                                         $query = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
5090                                                 $filter['reg_exp'] . "') OR LOWER(" .
5091                                                 "ttrss_entries.content) $reg_qpart LOWER('" . $filter['reg_exp'] . "')";
5092                                         break;
5093                                 case "tag":
5094                                         $query = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
5095                                                 $filter['reg_exp'] . "')";
5096                                         break;
5097                                 case "link":
5098                                         $query = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
5099                                                 $filter['reg_exp'] . "')";
5100                                         break;
5101                                 case "date":
5102
5103                                         if ($filter["filter_param"] == "before")
5104                                                 $cmp_qpart = "<";
5105                                         else
5106                                                 $cmp_qpart = ">=";
5107
5108                                         $timestamp = date("Y-m-d H:N:s", strtotime($filter["reg_exp"]));
5109                                         $query = "ttrss_entries.date_entered $cmp_qpart '$timestamp'";
5110                                         break;
5111                                 case "author":
5112                                         $query = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
5113                                                 $filter['reg_exp'] . "')";
5114                                         break;
5115                         }
5116
5117                         if ($filter["inverse"])
5118                                 $query = "NOT ($query)";
5119
5120                         if ($query) {
5121                                 if (DB_TYPE == "pgsql") {
5122                                         $query = " ($query) AND ttrss_entries.date_entered > NOW() - INTERVAL '14 days'";
5123                                 } else {
5124                                         $query = " ($query) AND ttrss_entries.date_entered > DATE_SUB(NOW(), INTERVAL 14 DAY)";
5125                                 }
5126                                 $query .= " AND ";
5127                         }
5128
5129                         return $query;
5130                 } else {
5131                         return false;
5132                 }
5133         }
5134
5135         // Status codes:
5136         // -1  - never connected
5137         // 0   - no data received
5138         // 1   - data received successfully
5139         // 2   - did not receive valid data
5140         // >10 - server error, code + 10 (e.g. 16 means server error 6)
5141
5142         function get_linked_feeds($link, $instance_id = false) {
5143                 if ($instance_id)
5144                         $instance_qpart = "id = '$instance_id' AND ";
5145                 else
5146                         $instance_qpart = "";
5147
5148                 if (DB_TYPE == "pgsql") {
5149                         $date_qpart = "last_connected < NOW() - INTERVAL '6 hours'";
5150                 } else {
5151                         $date_qpart = "last_connected < DATE_SUB(NOW(), INTERVAL 6 HOUR)";
5152                 }
5153
5154                 $result = db_query($link, "SELECT id, access_key, access_url FROM ttrss_linked_instances
5155                         WHERE $instance_qpart $date_qpart ORDER BY last_connected");
5156
5157                 while ($line = db_fetch_assoc($result)) {
5158                         $id = $line['id'];
5159
5160                         _debug("Updating: " . $line['access_url'] . " ($id)");
5161
5162                         $fetch_url = $line['access_url'] . '/public.php?op=fbexport';
5163                         $post_query = 'key=' . $line['access_key'];
5164
5165                         $feeds = fetch_file_contents($fetch_url, false, false, false, $post_query);
5166
5167                         // try doing it the old way
5168                         if (!$feeds) {
5169                                 $fetch_url = $line['access_url'] . '/backend.php?op=fbexport';
5170                                 $feeds = fetch_file_contents($fetch_url, false, false, false, $post_query);
5171                         }
5172
5173                         if ($feeds) {
5174                                 $feeds = json_decode($feeds, true);
5175
5176                                 if ($feeds) {
5177                                         if ($feeds['error']) {
5178                                                 $status = $feeds['error']['code'] + 10;
5179                                         } else {
5180                                                 $status = 1;
5181
5182                                                 if (count($feeds['feeds']) > 0) {
5183
5184                                                         db_query($link, "DELETE FROM ttrss_linked_feeds
5185                                                                 WHERE instance_id = '$id'");
5186
5187                                                         foreach ($feeds['feeds'] as $feed) {
5188                                                                 $feed_url = db_escape_string($feed['feed_url']);
5189                                                                 $title = db_escape_string($feed['title']);
5190                                                                 $subscribers = db_escape_string($feed['subscribers']);
5191                                                                 $site_url = db_escape_string($feed['site_url']);
5192
5193                                                                 db_query($link, "INSERT INTO ttrss_linked_feeds
5194                                                                         (feed_url, site_url, title, subscribers, instance_id, created, updated)
5195                                                                 VALUES
5196                                                                         ('$feed_url', '$site_url', '$title', '$subscribers', '$id', NOW(), NOW())");
5197                                                         }
5198                                                 } else {
5199                                                         // received 0 feeds, this might indicate that
5200                                                         // the instance on the other hand is rebuilding feedbrowser cache
5201                                                         // we will try again later
5202
5203                                                         // TODO: maybe perform expiration based on updated here?
5204                                                 }
5205
5206                                                 _debug("Processed " . count($feeds['feeds']) . " feeds.");
5207                                         }
5208                                 } else {
5209                                         $status = 2;
5210                                 }
5211
5212                         } else {
5213                                 $status = 0;
5214                         }
5215
5216                         _debug("Status: $status");
5217
5218                         db_query($link, "UPDATE ttrss_linked_instances SET
5219                                 last_status_out = '$status', last_connected = NOW() WHERE id = '$id'");
5220
5221                 }
5222         }
5223
5224         function make_feed_browser($link, $search, $limit, $mode = 1) {
5225
5226                 $owner_uid = $_SESSION["uid"];
5227                 $rv = '';
5228
5229                 if ($search) {
5230                         $search_qpart = "AND (UPPER(feed_url) LIKE UPPER('%$search%') OR
5231                                                 UPPER(title) LIKE UPPER('%$search%'))";
5232                 } else {
5233                         $search_qpart = "";
5234                 }
5235
5236                 if ($mode == 1) {
5237                         /* $result = db_query($link, "SELECT feed_url, subscribers FROM
5238                          ttrss_feedbrowser_cache WHERE (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
5239                         WHERE tf.feed_url = ttrss_feedbrowser_cache.feed_url
5240                         AND owner_uid = '$owner_uid') $search_qpart
5241                         ORDER BY subscribers DESC LIMIT $limit"); */
5242
5243                         $result = db_query($link, "SELECT feed_url, site_url, title, SUM(subscribers) AS subscribers FROM
5244                                                 (SELECT feed_url, site_url, title, subscribers FROM ttrss_feedbrowser_cache UNION ALL
5245                                                         SELECT feed_url, site_url, title, subscribers FROM ttrss_linked_feeds) AS qqq
5246                                                 WHERE
5247                                                         (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
5248                                                                 WHERE tf.feed_url = qqq.feed_url
5249                                                                         AND owner_uid = '$owner_uid') $search_qpart
5250                                                 GROUP BY feed_url, site_url, title ORDER BY subscribers DESC LIMIT $limit");
5251
5252                 } else if ($mode == 2) {
5253                         $result = db_query($link, "SELECT *,
5254                                                 (SELECT COUNT(*) FROM ttrss_user_entries WHERE
5255                                                         orig_feed_id = ttrss_archived_feeds.id) AS articles_archived
5256                                                 FROM
5257                                                         ttrss_archived_feeds
5258                                                 WHERE
5259                                                 (SELECT COUNT(*) FROM ttrss_feeds
5260                                                         WHERE ttrss_feeds.feed_url = ttrss_archived_feeds.feed_url AND
5261                                                                 owner_uid = '$owner_uid') = 0   AND
5262                                                 owner_uid = '$owner_uid' $search_qpart
5263                                                 ORDER BY id DESC LIMIT $limit");
5264                 }
5265
5266                 $feedctr = 0;
5267
5268                 while ($line = db_fetch_assoc($result)) {
5269
5270                         if ($mode == 1) {
5271
5272                                 $feed_url = htmlspecialchars($line["feed_url"]);
5273                                 $site_url = htmlspecialchars($line["site_url"]);
5274                                 $subscribers = $line["subscribers"];
5275
5276                                 $check_box = "<input onclick='toggleSelectListRow2(this)'
5277                                                         dojoType=\"dijit.form.CheckBox\"
5278                                                         type=\"checkbox\" \">";
5279
5280                                 $class = ($feedctr % 2) ? "even" : "odd";
5281
5282                                 $site_url = "<a target=\"_blank\"
5283                                                         href=\"$site_url\">
5284                                                         <span class=\"fb_feedTitle\">".
5285                                 htmlspecialchars($line["title"])."</span></a>";
5286
5287                                 $feed_url = "<a target=\"_blank\" class=\"fb_feedUrl\"
5288                                                         href=\"$feed_url\"><img src='images/feed-icon-12x12.png'
5289                                                         style='vertical-align : middle'></a>";
5290
5291                                 $rv .= "<li>$check_box $feed_url $site_url".
5292                                                         "&nbsp;<span class='subscribers'>($subscribers)</span></li>";
5293
5294                         } else if ($mode == 2) {
5295                                 $feed_url = htmlspecialchars($line["feed_url"]);
5296                                 $site_url = htmlspecialchars($line["site_url"]);
5297                                 $title = htmlspecialchars($line["title"]);
5298
5299                                 $check_box = "<input onclick='toggleSelectListRow2(this)' dojoType=\"dijit.form.CheckBox\"
5300                                                         type=\"checkbox\">";
5301
5302                                 $class = ($feedctr % 2) ? "even" : "odd";
5303
5304                                 if ($line['articles_archived'] > 0) {
5305                                         $archived = sprintf(__("%d archived articles"), $line['articles_archived']);
5306                                         $archived = "&nbsp;<span class='subscribers'>($archived)</span>";
5307                                 } else {
5308                                         $archived = '';
5309                                 }
5310
5311                                 $site_url = "<a target=\"_blank\"
5312                                                         href=\"$site_url\">
5313                                                         <span class=\"fb_feedTitle\">".
5314                                 htmlspecialchars($line["title"])."</span></a>";
5315
5316                                 $feed_url = "<a target=\"_blank\" class=\"fb_feedUrl\"
5317                                                         href=\"$feed_url\"><img src='images/feed-icon-12x12.png'
5318                                                         style='vertical-align : middle'></a>";
5319
5320
5321                                 $rv .= "<li id=\"FBROW-".$line["id"]."\">".
5322                                                         "$check_box $feed_url $site_url $archived</li>";
5323                         }
5324
5325                         ++$feedctr;
5326                 }
5327
5328                 if ($feedctr == 0) {
5329                         $rv .= "<li style=\"text-align : center\"><p>".__('No feeds found.')."</p></li>";
5330                 }
5331
5332                 return $rv;
5333         }
5334
5335         if (!function_exists('gzdecode')) {
5336                 function gzdecode($string) { // no support for 2nd argument
5337                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
5338                                 base64_encode($string));
5339                 }
5340         }
5341
5342         function perform_data_import($link, $filename, $owner_uid) {
5343
5344                 $num_imported = 0;
5345                 $num_processed = 0;
5346                 $num_feeds_created = 0;
5347
5348                 $doc = @DOMDocument::load($filename);
5349
5350                 if (!$doc) {
5351                         $contents = file_get_contents($filename);
5352
5353                         if ($contents) {
5354                                 $data = @gzuncompress($contents);
5355                         }
5356
5357                         if (!$data) {
5358                                 $data = @gzdecode($contents);
5359                         }
5360
5361                         if ($data)
5362                                 $doc = DOMDocument::loadXML($data);
5363                 }
5364
5365                 if ($doc) {
5366
5367                         $xpath = new DOMXpath($doc);
5368
5369                         $container = $doc->firstChild;
5370
5371                         if ($container && $container->hasAttribute('schema-version')) {
5372                                 $schema_version = $container->getAttribute('schema-version');
5373
5374                                 if ($schema_version != SCHEMA_VERSION) {
5375                                         print "<p>" .__("Could not import: incorrect schema version.") . "</p>";
5376                                         return;
5377                                 }
5378
5379                         } else {
5380                                 print "<p>" . __("Could not import: unrecognized document format.") . "</p>";
5381                                 return;
5382                         }
5383
5384                         $articles = $xpath->query("//article");
5385
5386                         foreach ($articles as $article_node) {
5387                                 if ($article_node->childNodes) {
5388
5389                                         $ref_id = 0;
5390
5391                                         $article = array();
5392
5393                                         foreach ($article_node->childNodes as $child) {
5394                                                 if ($child->nodeName != 'label_cache')
5395                                                         $article[$child->nodeName] = db_escape_string($child->nodeValue);
5396                                                 else
5397                                                         $article[$child->nodeName] = $child->nodeValue;
5398                                         }
5399
5400                                         //print_r($article);
5401
5402                                         if ($article['guid']) {
5403
5404                                                 ++$num_processed;
5405
5406                                                 //db_query($link, "BEGIN");
5407
5408                                                 //print 'GUID:' . $article['guid'] . "\n";
5409
5410                                                 $result = db_query($link, "SELECT id FROM ttrss_entries
5411                                                         WHERE guid = '".$article['guid']."'");
5412
5413                                                 if (db_num_rows($result) == 0) {
5414
5415                                                         $result = db_query($link,
5416                                                                 "INSERT INTO ttrss_entries
5417                                                                         (title,
5418                                                                         guid,
5419                                                                         link,
5420                                                                         updated,
5421                                                                         content,
5422                                                                         content_hash,
5423                                                                         no_orig_date,
5424                                                                         date_updated,
5425                                                                         date_entered,
5426                                                                         comments,
5427                                                                         num_comments,
5428                                                                         author)
5429                                                                 VALUES
5430                                                                         ('".$article['title']."',
5431                                                                         '".$article['guid']."',
5432                                                                         '".$article['link']."',
5433                                                                         '".$article['updated']."',
5434                                                                         '".$article['content']."',
5435                                                                         '".sha1($article['content'])."',
5436                                                                         false,
5437                                                                         NOW(),
5438                                                                         NOW(),
5439                                                                         '',
5440                                                                         '0',
5441                                                                         '')");
5442
5443                                                         $result = db_query($link, "SELECT id FROM ttrss_entries
5444                                                                 WHERE guid = '".$article['guid']."'");
5445
5446                                                         if (db_num_rows($result) != 0) {
5447                                                                 $ref_id = db_fetch_result($result, 0, "id");
5448                                                         }
5449
5450                                                 } else {
5451                                                         $ref_id = db_fetch_result($result, 0, "id");
5452                                                 }
5453
5454                                                 //print "Got ref ID: $ref_id\n";
5455
5456                                                 if ($ref_id) {
5457
5458                                                         $feed_url = $article['feed_url'];
5459                                                         $feed_title = $article['feed_title'];
5460
5461                                                         $feed = 'NULL';
5462
5463                                                         if ($feed_url && $feed_title) {
5464                                                                 $result = db_query($link, "SELECT id FROM ttrss_feeds
5465                                                                         WHERE feed_url = '$feed_url' AND owner_uid = '$owner_uid'");
5466
5467                                                                 if (db_num_rows($result) != 0) {
5468                                                                         $feed = db_fetch_result($result, 0, "id");
5469                                                                 } else {
5470                                                                         // try autocreating feed in Uncategorized...
5471
5472                                                                         $result = db_query($link, "INSERT INTO ttrss_feeds (owner_uid,
5473                                                                                 feed_url, title) VALUES ($owner_uid, '$feed_url', '$feed_title')");
5474
5475                                                                         $result = db_query($link, "SELECT id FROM ttrss_feeds
5476                                                                                 WHERE feed_url = '$feed_url' AND owner_uid = '$owner_uid'");
5477
5478                                                                         if (db_num_rows($result) != 0) {
5479                                                                                 ++$num_feeds_created;
5480
5481                                                                                 $feed = db_fetch_result($result, 0, "id");
5482                                                                         }
5483                                                                 }
5484                                                         }
5485
5486                                                         if ($feed != 'NULL')
5487                                                                 $feed_qpart = "feed_id = $feed";
5488                                                         else
5489                                                                 $feed_qpart = "feed_id IS NULL";
5490
5491                                                         //print "$ref_id / $feed / " . $article['title'] . "\n";
5492
5493                                                         $result = db_query($link, "SELECT int_id FROM ttrss_user_entries
5494                                                                 WHERE ref_id = '$ref_id' AND owner_uid = '$owner_uid' AND $feed_qpart");
5495
5496                                                         if (db_num_rows($result) == 0) {
5497
5498                                                                 $marked = bool_to_sql_bool(sql_bool_to_bool($article['marked']));
5499                                                                 $published = bool_to_sql_bool(sql_bool_to_bool($article['published']));
5500                                                                 $score = (int) $article['score'];
5501
5502                                                                 $tag_cache = $article['tag_cache'];
5503                                                                 $label_cache = db_escape_string($article['label_cache']);
5504                                                                 $note = $article['note'];
5505
5506                                                                 //print "Importing " . $article['title'] . "<br/>";
5507
5508                                                                 ++$num_imported;
5509
5510                                                                 $result = db_query($link,
5511                                                                         "INSERT INTO ttrss_user_entries
5512                                                                         (ref_id, owner_uid, feed_id, unread, last_read, marked,
5513                                                                                 published, score, tag_cache, label_cache, uuid, note)
5514                                                                         VALUES ($ref_id, $owner_uid, $feed, false,
5515                                                                                 NULL, $marked, $published, $score, '$tag_cache',
5516                                                                                         '$label_cache', '', '$note')");
5517
5518                                                                 $label_cache = json_decode($label_cache, true);
5519
5520                                                                 if (is_array($label_cache) && $label_cache["no-labels"] != 1) {
5521                                                                         foreach ($label_cache as $label) {
5522
5523                                                                                 label_create($link, $label[1],
5524                                                                                         $label[2], $label[3], $owner_uid);
5525
5526                                                                                 label_add_article($link, $ref_id, $label[1], $owner_uid);
5527
5528                                                                         }
5529                                                                 }
5530
5531                                                                 //db_query($link, "COMMIT");
5532                                                         }
5533                                                 }
5534                                         }
5535                                 }
5536                         }
5537
5538                         print "<p>" .
5539                                 T_sprintf("Finished: %d articles processed, %d imported, %d feeds created.",
5540                                         $num_processed, $num_imported, $num_feeds_created) .
5541                                         "</p>";
5542
5543                 } else {
5544
5545                         print "<p>" . __("Could not load XML document.") . "</p>";
5546
5547                 }
5548         }
5549
5550         function get_random_bytes($length) {
5551                 if (function_exists('openssl_random_pseudo_bytes')) {
5552                         return openssl_random_pseudo_bytes($length);
5553                 } else {
5554                         $output = "";
5555
5556                         for ($i = 0; $i < $length; $i++)
5557                                 $output .= chr(mt_rand(0, 255));
5558
5559                         return $output;
5560                 }
5561         }
5562
5563         function read_stdin() {
5564                 $fp = fopen("php://stdin", "r");
5565
5566                 if ($fp) {
5567                         $line = trim(fgets($fp));
5568                         fclose($fp);
5569                         return $line;
5570                 }
5571
5572                 return null;
5573         }
5574
5575         function tmpdirname($path, $prefix) {
5576                 // Use PHP's tmpfile function to create a temporary
5577                 // directory name. Delete the file and keep the name.
5578                 $tempname = tempnam($path,$prefix);
5579                 if (!$tempname)
5580                         return false;
5581
5582                 if (!unlink($tempname))
5583                         return false;
5584
5585        return $tempname;
5586         }
5587
5588 ?>