include/functions.php

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