include/functions.php

   1 <?php
   2         define('EXPECTED_CONFIG_VERSION', 26);
   3         define('SCHEMA_VERSION', 94);
   4
   5         $fetch_last_error = false;
   6
   7         function __autoload($class) {
   8                 $class_file = str_replace("_", "/", strtolower(basename($class)));
   9
  10                 $file = dirname(__FILE__)."/../classes/$class_file.php";
  11
  12                 if (file_exists($file)) {
  13                         require $file;
  14                 }
  15         }
  16
  17         mb_internal_encoding("UTF-8");
  18         date_default_timezone_set('UTC');
  19         if (defined('E_DEPRECATED')) {
  20                 error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
  21         } else {
  22                 error_reporting(E_ALL & ~E_NOTICE);
  23         }
  24
  25         require_once 'config.php';
  26
  27         if (DB_TYPE == "pgsql") {
  28                 define('SUBSTRING_FOR_DATE', 'SUBSTRING_FOR_DATE');
  29         } else {
  30                 define('SUBSTRING_FOR_DATE', 'SUBSTRING');
  31         }
  32
  33         define('THEME_VERSION_REQUIRED', 1.1);
  34
  35         /**
  36          * Return available translations names.
  37          *
  38          * @access public
  39          * @return array A array of available translations.
  40          */
  41         function get_translations() {
  42                 $tr = array(
  43                                         "auto"  => "Detect automatically",
  44                                         "ca_CA" => "Català",
  45                                         "en_US" => "English",
  46                                         "es_ES" => "Español",
  47                                         "de_DE" => "Deutsch",
  48                                         "fr_FR" => "Français",
  49                                         "hu_HU" => "Magyar (Hungarian)",
  50                                         "it_IT" => "Italiano",
  51                                         "ja_JP" => "日本語 (Japanese)",
  52                                         "nb_NO" => "Norwegian bokmål",
  53                                         "ru_RU" => "Русский",
  54                                         "pt_BR" => "Portuguese/Brazil",
  55                                         "zh_CN" => "Simplified Chinese");
  56
  57                 return $tr;
  58         }
  59
  60         require_once "lib/accept-to-gettext.php";
  61         require_once "lib/gettext/gettext.inc";
  62
  63         function startup_gettext() {
  64
  65                 # Get locale from Accept-Language header
  66                 $lang = al2gt(array_keys(get_translations()), "text/html");
  67
  68                 if (defined('_TRANSLATION_OVERRIDE_DEFAULT')) {
  69                         $lang = _TRANSLATION_OVERRIDE_DEFAULT;
  70                 }
  71
  72                 if ($_COOKIE["ttrss_lang"] && $_COOKIE["ttrss_lang"] != "auto") {
  73                         $lang = $_COOKIE["ttrss_lang"];
  74                 }
  75
  76                 /* In login action of mobile version */
  77                 if ($_POST["language"] && defined('MOBILE_VERSION')) {
  78                         $lang = $_POST["language"];
  79                         $_COOKIE["ttrss_lang"] = $lang;
  80                 }
  81
  82                 if ($lang) {
  83                         if (defined('LC_MESSAGES')) {
  84                                 _setlocale(LC_MESSAGES, $lang);
  85                         } else if (defined('LC_ALL')) {
  86                                 _setlocale(LC_ALL, $lang);
  87                         }
  88
  89                         if (defined('MOBILE_VERSION')) {
  90                                 _bindtextdomain("messages", "../locale");
  91                         } else {
  92                                 _bindtextdomain("messages", "locale");
  93                         }
  94
  95                         _textdomain("messages");
  96                         _bind_textdomain_codeset("messages", "UTF-8");
  97                 }
  98         }
  99
 100         startup_gettext();
 101
 102         require_once 'db-prefs.php';
 103         require_once 'version.php';
 104
 105         define('MAGPIE_OUTPUT_ENCODING', 'UTF-8');
 106
 107         define('SELF_USER_AGENT', 'Tiny Tiny RSS/' . VERSION . ' (http://tt-rss.org/)');
 108         define('MAGPIE_USER_AGENT', SELF_USER_AGENT);
 109
 110         ini_set('user_agent', SELF_USER_AGENT);
 111
 112         require_once 'lib/pubsubhubbub/publisher.php';
 113
 114         $purifier = false;
 115
 116         $tz_offset = -1;
 117         $utc_tz = new DateTimeZone('UTC');
 118         $schema_version = false;
 119
 120         /**
 121          * Print a timestamped debug message.
 122          *
 123          * @param string $msg The debug message.
 124          * @return void
 125          */
 126         function _debug($msg) {
 127                 if (defined('QUIET') && QUIET) {
 128                         return;
 129                 }
 130                 $ts = strftime("%H:%M:%S", time());
 131                 if (function_exists('posix_getpid')) {
 132                         $ts = "$ts/" . posix_getpid();
 133                 }
 134                 print "[$ts] $msg\n";
 135         } // function _debug
 136
 137         /**
 138          * Purge a feed old posts.
 139          *
 140          * @param mixed $link A database connection.
 141          * @param mixed $feed_id The id of the purged feed.
 142          * @param mixed $purge_interval Olderness of purged posts.
 143          * @param boolean $debug Set to True to enable the debug. False by default.
 144          * @access public
 145          * @return void
 146          */
 147         function purge_feed($link, $feed_id, $purge_interval, $debug = false) {
 148
 149                 if (!$purge_interval) $purge_interval = feed_purge_interval($link, $feed_id);
 150
 151                 $rows = -1;
 152
 153                 $result = db_query($link,
 154                         "SELECT owner_uid FROM ttrss_feeds WHERE id = '$feed_id'");
 155
 156                 $owner_uid = false;
 157
 158                 if (db_num_rows($result) == 1) {
 159                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 160                 }
 161
 162                 if ($purge_interval == -1 || !$purge_interval) {
 163                         if ($owner_uid) {
 164                                 ccache_update($link, $feed_id, $owner_uid);
 165                         }
 166                         return;
 167                 }
 168
 169                 if (!$owner_uid) return;
 170
 171                 if (FORCE_ARTICLE_PURGE == 0) {
 172                         $purge_unread = get_pref($link, "PURGE_UNREAD_ARTICLES",
 173                                 $owner_uid, false);
 174                 } else {
 175                         $purge_unread = true;
 176                         $purge_interval = FORCE_ARTICLE_PURGE;
 177                 }
 178
 179                 if (!$purge_unread) $query_limit = " unread = false AND ";
 180
 181                 if (DB_TYPE == "pgsql") {
 182                         $pg_version = get_pgsql_version($link);
 183
 184                         if (preg_match("/^7\./", $pg_version) || preg_match("/^8\.0/", $pg_version)) {
 185
 186                                 $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 187                                         ttrss_entries.id = ref_id AND
 188                                         marked = false AND
 189                                         feed_id = '$feed_id' AND
 190                                         $query_limit
 191                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 192
 193                         } else {
 194
 195                                 $result = db_query($link, "DELETE FROM ttrss_user_entries
 196                                         USING ttrss_entries
 197                                         WHERE ttrss_entries.id = ref_id AND
 198                                         marked = false AND
 199                                         feed_id = '$feed_id' AND
 200                                         $query_limit
 201                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 202                         }
 203
 204                         $rows = pg_affected_rows($result);
 205
 206                 } else {
 207
 208 /*                      $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 209                                 marked = false AND feed_id = '$feed_id' AND
 210                                 (SELECT date_updated FROM ttrss_entries WHERE
 211                                         id = ref_id) < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)"); */
 212
 213                         $result = db_query($link, "DELETE FROM ttrss_user_entries
 214                                 USING ttrss_user_entries, ttrss_entries
 215                                 WHERE ttrss_entries.id = ref_id AND
 216                                 marked = false AND
 217                                 feed_id = '$feed_id' AND
 218                                 $query_limit
 219                                 ttrss_entries.date_updated < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)");
 220
 221                         $rows = mysql_affected_rows($link);
 222
 223                 }
 224
 225                 ccache_update($link, $feed_id, $owner_uid);
 226
 227                 if ($debug) {
 228                         _debug("Purged feed $feed_id ($purge_interval): deleted $rows articles");
 229                 }
 230         } // function purge_feed
 231
 232         function feed_purge_interval($link, $feed_id) {
 233
 234                 $result = db_query($link, "SELECT purge_interval, owner_uid FROM ttrss_feeds
 235                         WHERE id = '$feed_id'");
 236
 237                 if (db_num_rows($result) == 1) {
 238                         $purge_interval = db_fetch_result($result, 0, "purge_interval");
 239                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 240
 241                         if ($purge_interval == 0) $purge_interval = get_pref($link,
 242                                 'PURGE_OLD_DAYS', $owner_uid);
 243
 244                         return $purge_interval;
 245
 246                 } else {
 247                         return -1;
 248                 }
 249         }
 250
 251         function purge_orphans($link, $do_output = false) {
 252
 253                 // purge orphaned posts in main content table
 254                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
 255                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
 256
 257                 if ($do_output) {
 258                         $rows = db_affected_rows($link, $result);
 259                         _debug("Purged $rows orphaned posts.");
 260                 }
 261         }
 262
 263         function get_feed_update_interval($link, $feed_id) {
 264                 $result = db_query($link, "SELECT owner_uid, update_interval FROM
 265                         ttrss_feeds WHERE id = '$feed_id'");
 266
 267                 if (db_num_rows($result) == 1) {
 268                         $update_interval = db_fetch_result($result, 0, "update_interval");
 269                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 270
 271                         if ($update_interval != 0) {
 272                                 return $update_interval;
 273                         } else {
 274                                 return get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $owner_uid, false);
 275                         }
 276
 277                 } else {
 278                         return -1;
 279                 }
 280         }
 281
 282         function fetch_file_contents($url, $type = false, $login = false, $pass = false, $post_query = false) {
 283                 $login = urlencode($login);
 284                 $pass = urlencode($pass);
 285
 286                 global $fetch_last_error;
 287
 288                 if (function_exists('curl_init') && !ini_get("open_basedir")) {
 289                         $ch = curl_init($url);
 290
 291                         curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 15);
 292                         curl_setopt($ch, CURLOPT_TIMEOUT, 45);
 293                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
 294                         curl_setopt($ch, CURLOPT_MAXREDIRS, 20);
 295                         curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
 296                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 297                         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 298                         curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 299                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 300                         curl_setopt($ch, CURLOPT_ENCODING , "gzip");
 301
 302                         if ($post_query) {
 303                                 curl_setopt($ch, CURLOPT_POST, true);
 304                                 curl_setopt($ch, CURLOPT_POSTFIELDS, $post_query);
 305                         }
 306
 307                         if ($login && $pass)
 308                                 curl_setopt($ch, CURLOPT_USERPWD, "$login:$pass");
 309
 310                         $contents = @curl_exec($ch);
 311
 312                         if ($contents === false) {
 313                                 $fetch_last_error = curl_error($ch);
 314                                 curl_close($ch);
 315                                 return false;
 316                         }
 317
 318                         $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 319                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 320                         curl_close($ch);
 321
 322                         if ($http_code != 200 || $type && strpos($content_type, "$type") === false) {
 323                                 return false;
 324                         }
 325
 326                         return $contents;
 327                 } else {
 328                         if ($login && $pass ){
 329                                 $url_parts = array();
 330
 331                                 preg_match("/(^[^:]*):\/\/(.*)/", $url, $url_parts);
 332
 333                                 if ($url_parts[1] && $url_parts[2]) {
 334                                         $url = $url_parts[1] . "://$login:$pass@" . $url_parts[2];
 335                                 }
 336                         }
 337
 338                         $data = @file_get_contents($url);
 339
 340                         if (!$data && function_exists('error_get_last')) {
 341                                 $error = error_get_last();
 342                                 $fetch_last_error = $error["message"];
 343                         }
 344                         return $data;
 345                 }
 346
 347         }
 348
 349         /**
 350          * Try to determine the favicon URL for a feed.
 351          * adapted from wordpress favicon plugin by Jeff Minard (http://thecodepro.com/)
 352          * http://dev.wp-plugins.org/file/favatars/trunk/favatars.php
 353          *
 354          * @param string $url A feed or page URL
 355          * @access public
 356          * @return mixed The favicon URL, or false if none was found.
 357          */
 358         function get_favicon_url($url) {
 359
 360                 $favicon_url = false;
 361
 362                 if ($html = @fetch_file_contents($url)) {
 363
 364                         libxml_use_internal_errors(true);
 365
 366                         $doc = new DOMDocument();
 367                         $doc->loadHTML($html);
 368                         $xpath = new DOMXPath($doc);
 369
 370                         $base = $xpath->query('/html/head/base');
 371                         foreach ($base as $b) {
 372                                 $url = $b->getAttribute("href");
 373                                 break;
 374                         }
 375
 376                         $entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon"]');
 377                         if (count($entries) > 0) {
 378                                 foreach ($entries as $entry) {
 379                                         $favicon_url = rewrite_relative_url($url, $entry->getAttribute("href"));
 380                                         break;
 381                                 }
 382                         }
 383                 }
 384
 385                 if (!$favicon_url)
 386                         $favicon_url = rewrite_relative_url($url, "/favicon.ico");
 387
 388                 return $favicon_url;
 389         } // function get_favicon_url
 390
 391         function check_feed_favicon($site_url, $feed, $link) {
 392 #               print "FAVICON [$site_url]: $favicon_url\n";
 393
 394                 $icon_file = ICONS_DIR . "/$feed.ico";
 395
 396                 if (!file_exists($icon_file)) {
 397                         $favicon_url = get_favicon_url($site_url);
 398
 399                         if ($favicon_url) {
 400                                 // Limiting to "image" type misses those served with text/plain
 401                                 $contents = fetch_file_contents($favicon_url); // , "image");
 402
 403                                 if ($contents) {
 404                                         // Crude image type matching.
 405                                         // Patterns gleaned from the file(1) source code.
 406                                         if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
 407                                                 // 0       string  \000\000\001\000        MS Windows icon resource
 408                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
 409                                         }
 410                                         elseif (preg_match('/^GIF8/', $contents)) {
 411                                                 // 0       string          GIF8            GIF image data
 412                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
 413                                         }
 414                                         elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
 415                                                 // 0       string          \x89PNG\x0d\x0a\x1a\x0a         PNG image data
 416                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
 417                                         }
 418                                         elseif (preg_match('/^\xff\xd8/', $contents)) {
 419                                                 // 0       beshort         0xffd8          JPEG image data
 420                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
 421                                         }
 422                                         else {
 423                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
 424                                                 $contents = "";
 425                                         }
 426                                 }
 427
 428                                 if ($contents) {
 429                                         $fp = @fopen($icon_file, "w");
 430
 431                                         if ($fp) {
 432                                                 fwrite($fp, $contents);
 433                                                 fclose($fp);
 434                                                 chmod($icon_file, 0644);
 435                                         }
 436                                 }
 437                         }
 438                 }
 439         }
 440
 441         function print_select($id, $default, $values, $attributes = "") {
 442                 print "<select name=\"$id\" id=\"$id\" $attributes>";
 443                 foreach ($values as $v) {
 444                         if ($v == $default)
 445                                 $sel = "selected=\"1\"";
 446                          else
 447                                 $sel = "";
 448
 449                         print "<option value=\"$v\" $sel>$v</option>";
 450                 }
 451                 print "</select>";
 452         }
 453
 454         function print_select_hash($id, $default, $values, $attributes = "") {
 455                 print "<select name=\"$id\" id='$id' $attributes>";
 456                 foreach (array_keys($values) as $v) {
 457                         if ($v == $default)
 458                                 $sel = 'selected="selected"';
 459                          else
 460                                 $sel = "";
 461
 462                         print "<option $sel value=\"$v\">".$values[$v]."</option>";
 463                 }
 464
 465                 print "</select>";
 466         }
 467
 468         function get_article_filters($filters, $title, $content, $link, $timestamp, $author, $tags) {
 469                 $matches = array();
 470
 471                 if ($filters["title"]) {
 472                         foreach ($filters["title"] as $filter) {
 473                                 $reg_exp = $filter["reg_exp"];
 474                                 $inverse = $filter["inverse"];
 475                                 if ((!$inverse && @preg_match("/$reg_exp/i", $title)) ||
 476                                                 ($inverse && !@preg_match("/$reg_exp/i", $title))) {
 477
 478                                         array_push($matches, array($filter["action"], $filter["action_param"]));
 479                                 }
 480                         }
 481                 }
 482
 483                 if ($filters["content"]) {
 484                         foreach ($filters["content"] as $filter) {
 485                                 $reg_exp = $filter["reg_exp"];
 486                                 $inverse = $filter["inverse"];
 487
 488                                 if ((!$inverse && @preg_match("/$reg_exp/i", $content)) ||
 489                                                 ($inverse && !@preg_match("/$reg_exp/i", $content))) {
 490
 491                                         array_push($matches, array($filter["action"], $filter["action_param"]));
 492                                 }
 493                         }
 494                 }
 495
 496                 if ($filters["both"]) {
 497                         foreach ($filters["both"] as $filter) {
 498                                 $reg_exp = $filter["reg_exp"];
 499                                 $inverse = $filter["inverse"];
 500
 501                                 if ($inverse) {
 502                                         if (!@preg_match("/$reg_exp/i", $title) && !preg_match("/$reg_exp/i", $content)) {
 503                                                 array_push($matches, array($filter["action"], $filter["action_param"]));
 504                                         }
 505                                 } else {
 506                                         if (@preg_match("/$reg_exp/i", $title) || preg_match("/$reg_exp/i", $content)) {
 507                                                 array_push($matches, array($filter["action"], $filter["action_param"]));
 508                                         }
 509                                 }
 510                         }
 511                 }
 512
 513                 if ($filters["link"]) {
 514                         $reg_exp = $filter["reg_exp"];
 515                         foreach ($filters["link"] as $filter) {
 516                                 $reg_exp = $filter["reg_exp"];
 517                                 $inverse = $filter["inverse"];
 518
 519                                 if ((!$inverse && @preg_match("/$reg_exp/i", $link)) ||
 520                                                 ($inverse && !@preg_match("/$reg_exp/i", $link))) {
 521
 522                                         array_push($matches, array($filter["action"], $filter["action_param"]));
 523                                 }
 524                         }
 525                 }
 526
 527                 if ($filters["date"]) {
 528                         $reg_exp = $filter["reg_exp"];
 529                         foreach ($filters["date"] as $filter) {
 530                                 $date_modifier = $filter["filter_param"];
 531                                 $inverse = $filter["inverse"];
 532                                 $check_timestamp = strtotime($filter["reg_exp"]);
 533
 534                                 # no-op when timestamp doesn't parse to prevent misfires
 535
 536                                 if ($check_timestamp) {
 537                                         $match_ok = false;
 538
 539                                         if ($date_modifier == "before" && $timestamp < $check_timestamp ||
 540                                                 $date_modifier == "after" && $timestamp > $check_timestamp) {
 541                                                         $match_ok = true;
 542                                         }
 543
 544                                         if ($inverse) $match_ok = !$match_ok;
 545
 546                                         if ($match_ok) {
 547                                                 array_push($matches, array($filter["action"], $filter["action_param"]));
 548                                         }
 549                                 }
 550                         }
 551                 }
 552
 553                 if ($filters["author"]) {
 554                         foreach ($filters["author"] as $filter) {
 555                                 $reg_exp = $filter["reg_exp"];
 556                                 $inverse = $filter["inverse"];
 557                                 if ((!$inverse && @preg_match("/$reg_exp/i", $author)) ||
 558                                                 ($inverse && !@preg_match("/$reg_exp/i", $author))) {
 559
 560                                         array_push($matches, array($filter["action"], $filter["action_param"]));
 561                                 }
 562                         }
 563                 }
 564
 565                 if ($filters["tag"]) {
 566
 567                         $tag_string = join(",", $tags);
 568
 569                         foreach ($filters["tag"] as $filter) {
 570                                 $reg_exp = $filter["reg_exp"];
 571                                 $inverse = $filter["inverse"];
 572
 573                                 if ((!$inverse && @preg_match("/$reg_exp/i", $tag_string)) ||
 574                                                 ($inverse && !@preg_match("/$reg_exp/i", $tag_string))) {
 575
 576                                         array_push($matches, array($filter["action"], $filter["action_param"]));
 577                                 }
 578                         }
 579                 }
 580
 581
 582                 return $matches;
 583         }
 584
 585         function find_article_filter($filters, $filter_name) {
 586                 foreach ($filters as $f) {
 587                         if ($f[0] == $filter_name) {
 588                                 return $f;
 589                         };
 590                 }
 591                 return false;
 592         }
 593
 594         function calculate_article_score($filters) {
 595                 $score = 0;
 596
 597                 foreach ($filters as $f) {
 598                         if ($f[0] == "score") {
 599                                 $score += $f[1];
 600                         };
 601                 }
 602                 return $score;
 603         }
 604
 605         function assign_article_to_labels($link, $id, $filters, $owner_uid) {
 606                 foreach ($filters as $f) {
 607                         if ($f[0] == "label") {
 608                                 label_add_article($link, $id, $f[1], $owner_uid);
 609                         };
 610                 }
 611         }
 612
 613         function getmicrotime() {
 614                 list($usec, $sec) = explode(" ",microtime());
 615                 return ((float)$usec + (float)$sec);
 616         }
 617
 618         function print_radio($id, $default, $true_is, $values, $attributes = "") {
 619                 foreach ($values as $v) {
 620
 621                         if ($v == $default)
 622                                 $sel = "checked";
 623                          else
 624                                 $sel = "";
 625
 626                         if ($v == $true_is) {
 627                                 $sel .= " value=\"1\"";
 628                         } else {
 629                                 $sel .= " value=\"0\"";
 630                         }
 631
 632                         print "<input class=\"noborder\" dojoType=\"dijit.form.RadioButton\"
 633                                 type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 634
 635                 }
 636         }
 637
 638         function initialize_user_prefs($link, $uid, $profile = false) {
 639
 640                 $uid = db_escape_string($uid);
 641
 642                 if (!$profile) {
 643                         $profile = "NULL";
 644                         $profile_qpart = "AND profile IS NULL";
 645                 } else {
 646                         $profile_qpart = "AND profile = '$profile'";
 647                 }
 648
 649                 if (get_schema_version($link) < 63) $profile_qpart = "";
 650
 651                 db_query($link, "BEGIN");
 652
 653                 $result = db_query($link, "SELECT pref_name,def_value FROM ttrss_prefs");
 654
 655                 $u_result = db_query($link, "SELECT pref_name
 656                         FROM ttrss_user_prefs WHERE owner_uid = '$uid' $profile_qpart");
 657
 658                 $active_prefs = array();
 659
 660                 while ($line = db_fetch_assoc($u_result)) {
 661                         array_push($active_prefs, $line["pref_name"]);
 662                 }
 663
 664                 while ($line = db_fetch_assoc($result)) {
 665                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 666 //                              print "adding " . $line["pref_name"] . "<br>";
 667
 668                                 if (get_schema_version($link) < 63) {
 669                                         db_query($link, "INSERT INTO ttrss_user_prefs
 670                                                 (owner_uid,pref_name,value) VALUES
 671                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 672
 673                                 } else {
 674                                         db_query($link, "INSERT INTO ttrss_user_prefs
 675                                                 (owner_uid,pref_name,value, profile) VALUES
 676                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."', $profile)");
 677                                 }
 678
 679                         }
 680                 }
 681
 682                 db_query($link, "COMMIT");
 683
 684         }
 685
 686         function get_ssl_certificate_id() {
 687                 if ($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"]) {
 688                         return sha1($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"] .
 689                                 $_SERVER["REDIRECT_SSL_CLIENT_V_START"] .
 690                                 $_SERVER["REDIRECT_SSL_CLIENT_V_END"] .
 691                                 $_SERVER["REDIRECT_SSL_CLIENT_S_DN"]);
 692                 }
 693                 return "";
 694         }
 695
 696         function authenticate_user($link, $login, $password, $check_only = false) {
 697
 698                 if (!SINGLE_USER_MODE) {
 699
 700                         $user_id = false;
 701                         $modules = explode(",", AUTH_MODULES);
 702
 703                         foreach ($modules as $module) {
 704                                 $module_class = "auth_$module";
 705                                 if (class_exists($module_class)) {
 706                                         $authenticator = new $module_class($link);
 707
 708                                         $user_id = (int) $authenticator->authenticate($login, $password);
 709
 710                                         if ($user_id) {
 711                                                 $_SESSION["auth_module"] = $module;
 712                                                 break;
 713                                         }
 714
 715                                 } else {
 716                                         print T_sprintf("Fatal: authentication module %s not found.", $module);
 717                                         die;
 718                                 }
 719                         }
 720
 721                         if ($user_id && !$check_only) {
 722                                 $_SESSION["uid"] = $user_id;
 723
 724                                 $result = db_query($link, "SELECT login,access_level,pwd_hash FROM ttrss_users
 725                                         WHERE id = '$user_id'");
 726
 727                                 $_SESSION["name"] = db_fetch_result($result, 0, "login");
 728                                 $_SESSION["access_level"] = db_fetch_result($result, 0, "access_level");
 729                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 730
 731                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 732                                         $_SESSION["uid"]);
 733
 734                                 $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 735                                 $_SESSION["pwd_hash"] = db_fetch_result($result, 0, "pwd_hash");
 736
 737                                 $_SESSION["last_version_check"] = time();
 738
 739                                 initialize_user_prefs($link, $_SESSION["uid"]);
 740
 741                                 return true;
 742                         }
 743
 744                         return false;
 745
 746                 } else {
 747
 748                         $_SESSION["uid"] = 1;
 749                         $_SESSION["name"] = "admin";
 750                         $_SESSION["access_level"] = 10;
 751
 752                         $_SESSION["hide_hello"] = true;
 753                         $_SESSION["hide_logout"] = true;
 754
 755                         $_SESSION["auth_module"] = false;
 756
 757                         if (!$_SESSION["csrf_token"]) {
 758                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 759                         }
 760
 761                         $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 762
 763                         initialize_user_prefs($link, $_SESSION["uid"]);
 764
 765                         return true;
 766                 }
 767         }
 768
 769         function make_password($length = 8) {
 770
 771                 $password = "";
 772                 $possible = "0123456789abcdfghjkmnpqrstvwxyzABCDFGHJKMNPQRSTVWXYZ";
 773
 774         $i = 0;
 775
 776                 while ($i < $length) {
 777                         $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 778
 779                         if (!strstr($password, $char)) {
 780                                 $password .= $char;
 781                                 $i++;
 782                         }
 783                 }
 784                 return $password;
 785         }
 786
 787         // this is called after user is created to initialize default feeds, labels
 788         // or whatever else
 789
 790         // user preferences are checked on every login, not here
 791
 792         function initialize_user($link, $uid) {
 793
 794                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 795                         values ('$uid', 'Tiny Tiny RSS: New Releases',
 796                         'http://tt-rss.org/releases.rss')");
 797
 798                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 799                         values ('$uid', 'Tiny Tiny RSS: Forum',
 800                                 'http://tt-rss.org/forum/rss.php')");
 801         }
 802
 803         function logout_user() {
 804                 session_destroy();
 805                 if (isset($_COOKIE[session_name()])) {
 806                    setcookie(session_name(), '', time()-42000, '/');
 807                 }
 808         }
 809
 810         function validate_csrf($csrf_token) {
 811                 return $csrf_token == $_SESSION['csrf_token'];
 812         }
 813
 814         function validate_session($link) {
 815                 if (SINGLE_USER_MODE) return true;
 816
 817                 $check_ip = $_SESSION['ip_address'];
 818
 819                 switch (SESSION_CHECK_ADDRESS) {
 820                 case 0:
 821                         $check_ip = '';
 822                         break;
 823                 case 1:
 824                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 825                         break;
 826                 case 2:
 827                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.'));
 828                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 829                         break;
 830                 };
 831
 832                 if ($check_ip && strpos($_SERVER['REMOTE_ADDR'], $check_ip) !== 0) {
 833                         $_SESSION["login_error_msg"] =
 834                                 __("Session failed to validate (incorrect IP)");
 835                         return false;
 836                 }
 837
 838                 if ($_SESSION["ref_schema_version"] != get_schema_version($link, true))
 839                         return false;
 840
 841                 if ($_SESSION["uid"]) {
 842
 843                         $result = db_query($link,
 844                                 "SELECT pwd_hash FROM ttrss_users WHERE id = '".$_SESSION["uid"]."'");
 845
 846                         $pwd_hash = db_fetch_result($result, 0, "pwd_hash");
 847
 848                         if ($pwd_hash != $_SESSION["pwd_hash"]) {
 849                                 return false;
 850                         }
 851                 }
 852
 853 /*              if ($_SESSION["cookie_lifetime"] && $_SESSION["uid"]) {
 854
 855                         //print_r($_SESSION);
 856
 857                         if (time() > $_SESSION["cookie_lifetime"]) {
 858                                 return false;
 859                         }
 860                 } */
 861
 862                 return true;
 863         }
 864
 865         function login_sequence($link, $mobile = false) {
 866                 $_SESSION["prefs_cache"] = array();
 867
 868                 if (!SINGLE_USER_MODE) {
 869
 870                         $login_action = $_POST["login_action"];
 871
 872                         # try to authenticate user if called from login form
 873                         if ($login_action == "do_login") {
 874                                 $login = db_escape_string($_POST["login"]);
 875                                 $password = $_POST["password"];
 876                                 $remember_me = $_POST["remember_me"];
 877
 878                                 if (authenticate_user($link, $login, $password)) {
 879                                         $_POST["password"] = "";
 880
 881                                         $_SESSION["language"] = $_POST["language"];
 882                                         $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 883                                         $_SESSION["bw_limit"] = !!$_POST["bw_limit"];
 884
 885                                         if ($_POST["profile"]) {
 886
 887                                                 $profile = db_escape_string($_POST["profile"]);
 888
 889                                                 $result = db_query($link, "SELECT id FROM ttrss_settings_profiles
 890                                                         WHERE id = '$profile' AND owner_uid = " . $_SESSION["uid"]);
 891
 892                                                 if (db_num_rows($result) != 0) {
 893                                                         $_SESSION["profile"] = $profile;
 894                                                         $_SESSION["prefs_cache"] = array();
 895                                                 }
 896                                         }
 897
 898                                         if ($_REQUEST['return']) {
 899                                                 header("Location: " . $_REQUEST['return']);
 900                                         } else {
 901                                                 header("Location: " . $_SERVER["REQUEST_URI"]);
 902                                         }
 903
 904                                         exit;
 905
 906                                         return;
 907                                 } else {
 908                                         $_SESSION["login_error_msg"] = __("Incorrect username or password");
 909                                 }
 910                         }
 911
 912                         if (!$_SESSION["uid"] || !validate_session($link)) {
 913
 914                                 if (AUTH_AUTO_LOGIN && authenticate_user($link, null, null)) {
 915                                     $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 916                                 } else {
 917                                          authenticate_user($link, null, null, true);
 918                                     render_login_form($link, $mobile);
 919                                     exit;
 920                                 }
 921                         } else {
 922                                 /* bump login timestamp */
 923                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 924                                         $_SESSION["uid"]);
 925
 926                                 if ($_SESSION["language"] && SESSION_COOKIE_LIFETIME > 0) {
 927                                         setcookie("ttrss_lang", $_SESSION["language"],
 928                                                 time() + SESSION_COOKIE_LIFETIME);
 929                                 }
 930
 931                                 // try to remove possible duplicates from feed counter cache
 932 //                              ccache_cleanup($link, $_SESSION["uid"]);
 933                         }
 934
 935                 } else {
 936                         return authenticate_user($link, "admin", null);
 937                 }
 938         }
 939
 940         function truncate_string($str, $max_len, $suffix = '&hellip;') {
 941                 if (mb_strlen($str, "utf-8") > $max_len - 3) {
 942                         return mb_substr($str, 0, $max_len, "utf-8") . $suffix;
 943                 } else {
 944                         return $str;
 945                 }
 946         }
 947
 948         function theme_image($link, $filename) {
 949                 if ($link) {
 950                         $theme_path = get_user_theme_path($link);
 951
 952                         if ($theme_path && is_file($theme_path.$filename)) {
 953                                 return $theme_path.$filename;
 954                         } else {
 955                                 return $filename;
 956                         }
 957                 } else {
 958                         return $filename;
 959                 }
 960         }
 961
 962         function get_user_theme($link) {
 963
 964                 if (get_schema_version($link) >= 63 && $_SESSION["uid"]) {
 965                         $theme_name = get_pref($link, "_THEME_ID");
 966                         if (is_dir("themes/$theme_name")) {
 967                                 return $theme_name;
 968                         } else {
 969                                 return '';
 970                         }
 971                 } else {
 972                         return '';
 973                 }
 974
 975         }
 976
 977         function get_user_theme_path($link) {
 978                 $theme_path = '';
 979
 980                 if (get_schema_version($link) >= 63 && $_SESSION["uid"]) {
 981                         $theme_name = get_pref($link, "_THEME_ID");
 982
 983                         if ($theme_name && is_dir("themes/$theme_name")) {
 984                                 $theme_path = "themes/$theme_name/";
 985                         } else {
 986                                 $theme_name = '';
 987                         }
 988                 } else {
 989                         $theme_path = '';
 990                 }
 991
 992                 if ($theme_path) {
 993                         if (is_file("$theme_path/theme.ini")) {
 994                                 $ini = parse_ini_file("$theme_path/theme.ini", true);
 995                                 if ($ini['theme']['version'] >= THEME_VERSION_REQUIRED) {
 996                                         return $theme_path;
 997                                 }
 998                         }
 999                 }
1000                 return '';
1001         }
1002
1003         function get_user_theme_options($link) {
1004                 $t = get_user_theme_path($link);
1005
1006                 if ($t) {
1007                         if (is_file("$t/theme.ini")) {
1008                                 $ini = parse_ini_file("$t/theme.ini", true);
1009                                 if ($ini['theme']['version']) {
1010                                         return $ini['theme']['options'];
1011                                 }
1012                         }
1013                 }
1014                 return '';
1015         }
1016
1017         function print_theme_includes($link) {
1018
1019                 $t = get_user_theme_path($link);
1020                 $time = time();
1021
1022                 if ($t) {
1023                         print "<link rel=\"stylesheet\" type=\"text/css\"
1024                                 href=\"$t/theme.css?$time \">";
1025                         if (file_exists("$t/theme.js")) {
1026                                 print "<script type=\"text/javascript\" src=\"$t/theme.js?$time\">
1027                                         </script>";
1028                         }
1029                 }
1030         }
1031
1032         function get_all_themes() {
1033                 $themes = glob("themes/*");
1034
1035                 asort($themes);
1036
1037                 $rv = array();
1038
1039                 foreach ($themes as $t) {
1040                         if (is_file("$t/theme.ini")) {
1041                                 $ini = parse_ini_file("$t/theme.ini", true);
1042                                 if ($ini['theme']['version'] >= THEME_VERSION_REQUIRED &&
1043                                                         !$ini['theme']['disabled']) {
1044                                         $entry = array();
1045                                         $entry["path"] = $t;
1046                                         $entry["base"] = basename($t);
1047                                         $entry["name"] = $ini['theme']['name'];
1048                                         $entry["version"] = $ini['theme']['version'];
1049                                         $entry["author"] = $ini['theme']['author'];
1050                                         $entry["options"] = $ini['theme']['options'];
1051                                         array_push($rv, $entry);
1052                                 }
1053                         }
1054                 }
1055
1056                 return $rv;
1057         }
1058
1059         function convert_timestamp($timestamp, $source_tz, $dest_tz) {
1060
1061                 try {
1062                         $source_tz = new DateTimeZone($source_tz);
1063                 } catch (Exception $e) {
1064                         $source_tz = new DateTimeZone('UTC');
1065                 }
1066
1067                 try {
1068                         $dest_tz = new DateTimeZone($dest_tz);
1069                 } catch (Exception $e) {
1070                         $dest_tz = new DateTimeZone('UTC');
1071                 }
1072
1073                 $dt = new DateTime(date('Y-m-d H:i:s', $timestamp), $source_tz);
1074                 return $dt->format('U') + $dest_tz->getOffset($dt);
1075         }
1076
1077         function make_local_datetime($link, $timestamp, $long, $owner_uid = false,
1078                                         $no_smart_dt = false) {
1079
1080                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
1081                 if (!$timestamp) $timestamp = '1970-01-01 0:00';
1082
1083                 global $utc_tz;
1084                 global $tz_offset;
1085
1086                 # We store date in UTC internally
1087                 $dt = new DateTime($timestamp, $utc_tz);
1088
1089                 if ($tz_offset == -1) {
1090
1091                         $user_tz_string = get_pref($link, 'USER_TIMEZONE', $owner_uid);
1092
1093                         try {
1094                                 $user_tz = new DateTimeZone($user_tz_string);
1095                         } catch (Exception $e) {
1096                                 $user_tz = $utc_tz;
1097                         }
1098
1099                         $tz_offset = $user_tz->getOffset($dt);
1100                 }
1101
1102                 $user_timestamp = $dt->format('U') + $tz_offset;
1103
1104                 if (!$no_smart_dt) {
1105                         return smart_date_time($link, $user_timestamp,
1106                                 $tz_offset, $owner_uid);
1107                 } else {
1108                         if ($long)
1109                                 $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
1110                         else
1111                                 $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
1112
1113                         return date($format, $user_timestamp);
1114                 }
1115         }
1116
1117         function smart_date_time($link, $timestamp, $tz_offset = 0, $owner_uid = false) {
1118                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
1119
1120                 if (date("Y.m.d", $timestamp) == date("Y.m.d", time() + $tz_offset)) {
1121                         return date("G:i", $timestamp);
1122                 } else if (date("Y", $timestamp) == date("Y", time() + $tz_offset)) {
1123                         $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
1124                         return date($format, $timestamp);
1125                 } else {
1126                         $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
1127                         return date($format, $timestamp);
1128                 }
1129         }
1130
1131         function sql_bool_to_bool($s) {
1132                 if ($s == "t" || $s == "1" || $s == "true") {
1133                         return true;
1134                 } else {
1135                         return false;
1136                 }
1137         }
1138
1139         function bool_to_sql_bool($s) {
1140                 if ($s) {
1141                         return "true";
1142                 } else {
1143                         return "false";
1144                 }
1145         }
1146
1147         // Session caching removed due to causing wrong redirects to upgrade
1148         // script when get_schema_version() is called on an obsolete session
1149         // created on a previous schema version.
1150         function get_schema_version($link, $nocache = false) {
1151                 global $schema_version;
1152
1153                 if (!$schema_version) {
1154                         $result = db_query($link, "SELECT schema_version FROM ttrss_version");
1155                         $version = db_fetch_result($result, 0, "schema_version");
1156                         $schema_version = $version;
1157                         return $version;
1158                 } else {
1159                         return $schema_version;
1160                 }
1161         }
1162
1163         function sanity_check($link) {
1164                 require_once 'errors.php';
1165
1166                 $error_code = 0;
1167                 $schema_version = get_schema_version($link, true);
1168
1169                 if ($schema_version != SCHEMA_VERSION) {
1170                         $error_code = 5;
1171                 }
1172
1173                 if (DB_TYPE == "mysql") {
1174                         $result = db_query($link, "SELECT true", false);
1175                         if (db_num_rows($result) != 1) {
1176                                 $error_code = 10;
1177                         }
1178                 }
1179
1180                 if (db_escape_string("testTEST") != "testTEST") {
1181                         $error_code = 12;
1182                 }
1183
1184                 return array("code" => $error_code, "message" => $ERRORS[$error_code]);
1185         }
1186
1187         function file_is_locked($filename) {
1188                 if (function_exists('flock')) {
1189                         $fp = @fopen(LOCK_DIRECTORY . "/$filename", "r");
1190                         if ($fp) {
1191                                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1192                                         flock($fp, LOCK_UN);
1193                                         fclose($fp);
1194                                         return false;
1195                                 }
1196                                 fclose($fp);
1197                                 return true;
1198                         } else {
1199                                 return false;
1200                         }
1201                 }
1202                 return true; // consider the file always locked and skip the test
1203         }
1204
1205         function make_lockfile($filename) {
1206                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
1207
1208                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1209                         if (function_exists('posix_getpid')) {
1210                                 fwrite($fp, posix_getpid() . "\n");
1211                         }
1212                         return $fp;
1213                 } else {
1214                         return false;
1215                 }
1216         }
1217
1218         function make_stampfile($filename) {
1219                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
1220
1221                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1222                         fwrite($fp, time() . "\n");
1223                         flock($fp, LOCK_UN);
1224                         fclose($fp);
1225                         return true;
1226                 } else {
1227                         return false;
1228                 }
1229         }
1230
1231         function sql_random_function() {
1232                 if (DB_TYPE == "mysql") {
1233                         return "RAND()";
1234                 } else {
1235                         return "RANDOM()";
1236                 }
1237         }
1238
1239         function catchup_feed($link, $feed, $cat_view, $owner_uid = false, $max_id = false) {
1240
1241                         if (!$owner_uid) $owner_uid = $_SESSION['uid'];
1242
1243                         //if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
1244
1245                         $ref_check_qpart = ($max_id &&
1246                                 !get_pref($link, 'REVERSE_HEADLINES')) ? "ref_id <= '$max_id'" : "true";
1247
1248                         if (is_numeric($feed)) {
1249                                 if ($cat_view) {
1250
1251                                         if ($feed >= 0) {
1252
1253                                                 if ($feed > 0) {
1254                                                         $cat_qpart = "cat_id = '$feed'";
1255                                                 } else {
1256                                                         $cat_qpart = "cat_id IS NULL";
1257                                                 }
1258
1259                                                 $tmp_result = db_query($link, "SELECT id
1260                                                         FROM ttrss_feeds WHERE $cat_qpart AND owner_uid = $owner_uid");
1261
1262                                                 while ($tmp_line = db_fetch_assoc($tmp_result)) {
1263
1264                                                         $tmp_feed = $tmp_line["id"];
1265
1266                                                         db_query($link, "UPDATE ttrss_user_entries
1267                                                                 SET unread = false,last_read = NOW()
1268                                                                 WHERE feed_id = '$tmp_feed'
1269                                                                 AND $ref_check_qpart
1270                                                                 AND owner_uid = $owner_uid");
1271                                                 }
1272                                         } else if ($feed == -2) {
1273
1274                                                 db_query($link, "UPDATE ttrss_user_entries
1275                                                         SET unread = false,last_read = NOW() WHERE (SELECT COUNT(*)
1276                                                                 FROM ttrss_user_labels2 WHERE article_id = ref_id) > 0
1277                                                                 AND $ref_check_qpart
1278                                                                 AND unread = true AND owner_uid = $owner_uid");
1279                                         }
1280
1281                                 } else if ($feed > 0) {
1282
1283                                         db_query($link, "UPDATE ttrss_user_entries
1284                                                         SET unread = false,last_read = NOW()
1285                                                         WHERE feed_id = '$feed'
1286                                                         AND $ref_check_qpart
1287                                                         AND owner_uid = $owner_uid");
1288
1289                                 } else if ($feed < 0 && $feed > -10) { // special, like starred
1290
1291                                         if ($feed == -1) {
1292                                                 db_query($link, "UPDATE ttrss_user_entries
1293                                                         SET unread = false,last_read = NOW()
1294                                                         WHERE marked = true
1295                                                         AND $ref_check_qpart
1296                                                         AND owner_uid = $owner_uid");
1297                                         }
1298
1299                                         if ($feed == -2) {
1300                                                 db_query($link, "UPDATE ttrss_user_entries
1301                                                         SET unread = false,last_read = NOW()
1302                                                         WHERE published = true
1303                                                         AND $ref_check_qpart
1304                                                         AND owner_uid = $owner_uid");
1305                                         }
1306
1307                                         if ($feed == -3) {
1308
1309                                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE");
1310
1311                                                 if (DB_TYPE == "pgsql") {
1312                                                         $match_part = "updated > NOW() - INTERVAL '$intl hour' ";
1313                                                 } else {
1314                                                         $match_part = "updated > DATE_SUB(NOW(),
1315                                                                 INTERVAL $intl HOUR) ";
1316                                                 }
1317
1318                                                 $result = db_query($link, "SELECT id FROM ttrss_entries,
1319                                                         ttrss_user_entries WHERE $match_part AND
1320                                                         unread = true AND
1321                                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
1322                                                         owner_uid = $owner_uid");
1323
1324                                                 $affected_ids = array();
1325
1326                                                 while ($line = db_fetch_assoc($result)) {
1327                                                         array_push($affected_ids, $line["id"]);
1328                                                 }
1329
1330                                                 catchupArticlesById($link, $affected_ids, 0);
1331                                         }
1332
1333                                         if ($feed == -4) {
1334                                                 db_query($link, "UPDATE ttrss_user_entries
1335                                                         SET unread = false,last_read = NOW()
1336                                                         WHERE $ref_check_qpart AND owner_uid = $owner_uid");
1337                                         }
1338
1339                                 } else if ($feed < -10) { // label
1340
1341                                         $label_id = -$feed - 11;
1342
1343                                         db_query($link, "UPDATE ttrss_user_entries, ttrss_user_labels2
1344                                                 SET unread = false, last_read = NOW()
1345                                                         WHERE label_id = '$label_id' AND unread = true
1346                                                         AND $ref_check_qpart
1347                                                         AND owner_uid = '$owner_uid' AND ref_id = article_id");
1348
1349                                 }
1350
1351                                 ccache_update($link, $feed, $owner_uid, $cat_view);
1352
1353                         } else { // tag
1354                                 db_query($link, "BEGIN");
1355
1356                                 $tag_name = db_escape_string($feed);
1357
1358                                 $result = db_query($link, "SELECT post_int_id FROM ttrss_tags
1359                                         WHERE tag_name = '$tag_name' AND owner_uid = $owner_uid");
1360
1361                                 while ($line = db_fetch_assoc($result)) {
1362                                         db_query($link, "UPDATE ttrss_user_entries SET
1363                                                 unread = false, last_read = NOW()
1364                                                 WHERE $ref_check_qpart AND int_id = " . $line["post_int_id"]);
1365                                 }
1366                                 db_query($link, "COMMIT");
1367                         }
1368         }
1369
1370         function getAllCounters($link, $omode = "flc", $active_feed = false) {
1371
1372                 if (!$omode) $omode = "flc";
1373
1374                 $data = getGlobalCounters($link);
1375
1376                 $data = array_merge($data, getVirtCounters($link));
1377
1378                 if (strchr($omode, "l")) $data = array_merge($data, getLabelCounters($link));
1379                 if (strchr($omode, "f")) $data = array_merge($data, getFeedCounters($link, $active_feed));
1380                 if (strchr($omode, "t")) $data = array_merge($data, getTagCounters($link));
1381                 if (strchr($omode, "c")) $data = array_merge($data, getCategoryCounters($link));
1382
1383                 return $data;
1384         }
1385
1386         function getCategoryTitle($link, $cat_id) {
1387
1388                 if ($cat_id == -1) {
1389                         return __("Special");
1390                 } else if ($cat_id == -2) {
1391                         return __("Labels");
1392                 } else {
1393
1394                         $result = db_query($link, "SELECT title FROM ttrss_feed_categories WHERE
1395                                 id = '$cat_id'");
1396
1397                         if (db_num_rows($result) == 1) {
1398                                 return db_fetch_result($result, 0, "title");
1399                         } else {
1400                                 return "Uncategorized";
1401                         }
1402                 }
1403         }
1404
1405
1406         function getCategoryCounters($link) {
1407                 $ret_arr = array();
1408
1409                 /* Labels category */
1410
1411                 $cv = array("id" => -2, "kind" => "cat",
1412                         "counter" => getCategoryUnread($link, -2));
1413
1414                 array_push($ret_arr, $cv);
1415
1416                 $result = db_query($link, "SELECT id AS cat_id, value AS unread,
1417                         (SELECT COUNT(id) FROM ttrss_feed_categories AS c2
1418                                 WHERE c2.parent_cat = ttrss_feed_categories.id) AS num_children
1419                         FROM ttrss_feed_categories, ttrss_cat_counters_cache
1420                         WHERE ttrss_cat_counters_cache.feed_id = id AND
1421                         ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid AND
1422                         ttrss_feed_categories.owner_uid = " . $_SESSION["uid"]);
1423
1424                 while ($line = db_fetch_assoc($result)) {
1425                         $line["cat_id"] = (int) $line["cat_id"];
1426
1427                         if ($line["num_children"] > 0) {
1428                                 $child_counter = getCategoryChildrenUnread($link, $line["cat_id"], $_SESSION["uid"]);
1429                         } else {
1430                                 $child_counter = 0;
1431                         }
1432
1433                         $cv = array("id" => $line["cat_id"], "kind" => "cat",
1434                                 "child_counter" => $child_counter,
1435                                 "counter" => $line["unread"]);
1436
1437                         array_push($ret_arr, $cv);
1438                 }
1439
1440                 /* Special case: NULL category doesn't actually exist in the DB */
1441
1442                 $cv = array("id" => 0, "kind" => "cat",
1443                         "counter" => ccache_find($link, 0, $_SESSION["uid"], true));
1444
1445                 array_push($ret_arr, $cv);
1446
1447                 return $ret_arr;
1448         }
1449
1450         // only accepts real cats (>= 0)
1451         function getCategoryChildrenUnread($link, $cat, $owner_uid = false) {
1452                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1453
1454                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories WHERE parent_cat = '$cat'
1455                                 AND owner_uid = $owner_uid");
1456
1457                 $unread = 0;
1458
1459                 while ($line = db_fetch_assoc($result)) {
1460                         $unread += getCategoryUnread($link, $line["id"], $owner_uid);
1461                         $unread += getCategoryChildrenUnread($link, $line["id"], $owner_uid);
1462                 }
1463
1464                 return $unread;
1465         }
1466
1467         function getCategoryUnread($link, $cat, $owner_uid = false) {
1468
1469                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1470
1471                 if ($cat >= 0) {
1472
1473                         if ($cat != 0) {
1474                                 $cat_query = "cat_id = '$cat'";
1475                         } else {
1476                                 $cat_query = "cat_id IS NULL";
1477                         }
1478
1479                         $result = db_query($link, "SELECT id FROM ttrss_feeds WHERE $cat_query
1480                                         AND owner_uid = " . $owner_uid);
1481
1482                         $cat_feeds = array();
1483                         while ($line = db_fetch_assoc($result)) {
1484                                 array_push($cat_feeds, "feed_id = " . $line["id"]);
1485                         }
1486
1487                         if (count($cat_feeds) == 0) return 0;
1488
1489                         $match_part = implode(" OR ", $cat_feeds);
1490
1491                         $result = db_query($link, "SELECT COUNT(int_id) AS unread
1492                                 FROM ttrss_user_entries
1493                                 WHERE   unread = true AND ($match_part)
1494                                 AND owner_uid = " . $owner_uid);
1495
1496                         $unread = 0;
1497
1498                         # this needs to be rewritten
1499                         while ($line = db_fetch_assoc($result)) {
1500                                 $unread += $line["unread"];
1501                         }
1502
1503                         return $unread;
1504                 } else if ($cat == -1) {
1505                         return getFeedUnread($link, -1) + getFeedUnread($link, -2) + getFeedUnread($link, -3) + getFeedUnread($link, 0);
1506                 } else if ($cat == -2) {
1507
1508                         $result = db_query($link, "
1509                                 SELECT COUNT(unread) AS unread FROM
1510                                         ttrss_user_entries, ttrss_user_labels2
1511                                 WHERE article_id = ref_id AND unread = true
1512                                         AND ttrss_user_entries.owner_uid = '$owner_uid'");
1513
1514                         $unread = db_fetch_result($result, 0, "unread");
1515
1516                         return $unread;
1517
1518                 }
1519         }
1520
1521         function getFeedUnread($link, $feed, $is_cat = false) {
1522                 return getFeedArticles($link, $feed, $is_cat, true, $_SESSION["uid"]);
1523         }
1524
1525         function getLabelUnread($link, $label_id, $owner_uid = false) {
1526                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1527
1528                 $result = db_query($link, "SELECT COUNT(ref_id) AS unread FROM ttrss_user_entries, ttrss_user_labels2
1529                         WHERE owner_uid = '$owner_uid' AND unread = true AND label_id = '$label_id' AND article_id = ref_id");
1530
1531                 if (db_num_rows($result) != 0) {
1532                         return db_fetch_result($result, 0, "unread");
1533                 } else {
1534                         return 0;
1535                 }
1536         }
1537
1538         function getFeedArticles($link, $feed, $is_cat = false, $unread_only = false,
1539                 $owner_uid = false) {
1540
1541                 $n_feed = (int) $feed;
1542                 $need_entries = false;
1543
1544                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1545
1546                 if ($unread_only) {
1547                         $unread_qpart = "unread = true";
1548                 } else {
1549                         $unread_qpart = "true";
1550                 }
1551
1552                 if ($is_cat) {
1553                         return getCategoryUnread($link, $n_feed, $owner_uid);
1554                 } else if ($n_feed == -6) {
1555                         return 0;
1556                 } else if ($feed != "0" && $n_feed == 0) {
1557
1558                         $feed = db_escape_string($feed);
1559
1560                         $result = db_query($link, "SELECT SUM((SELECT COUNT(int_id)
1561                                 FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1562                                         AND ref_id = id AND $unread_qpart)) AS count FROM ttrss_tags
1563                                 WHERE owner_uid = $owner_uid AND tag_name = '$feed'");
1564                         return db_fetch_result($result, 0, "count");
1565
1566                 } else if ($n_feed == -1) {
1567                         $match_part = "marked = true";
1568                 } else if ($n_feed == -2) {
1569                         $match_part = "published = true";
1570                 } else if ($n_feed == -3) {
1571                         $match_part = "unread = true AND score >= 0";
1572
1573                         $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
1574
1575                         if (DB_TYPE == "pgsql") {
1576                                 $match_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
1577                         } else {
1578                                 $match_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
1579                         }
1580
1581                         $need_entries = true;
1582
1583                 } else if ($n_feed == -4) {
1584                         $match_part = "true";
1585                 } else if ($n_feed >= 0) {
1586
1587                         if ($n_feed != 0) {
1588                                 $match_part = "feed_id = '$n_feed'";
1589                         } else {
1590                                 $match_part = "feed_id IS NULL";
1591                         }
1592
1593                 } else if ($feed < -10) {
1594
1595                         $label_id = -$feed - 11;
1596
1597                         return getLabelUnread($link, $label_id, $owner_uid);
1598
1599                 }
1600
1601                 if ($match_part) {
1602
1603                         if ($need_entries) {
1604                                 $from_qpart = "ttrss_user_entries,ttrss_entries";
1605                                 $from_where = "ttrss_entries.id = ttrss_user_entries.ref_id AND";
1606                         } else {
1607                                 $from_qpart = "ttrss_user_entries";
1608                         }
1609
1610                         $query = "SELECT count(int_id) AS unread
1611                                 FROM $from_qpart WHERE
1612                                 $unread_qpart AND $from_where ($match_part) AND ttrss_user_entries.owner_uid = $owner_uid";
1613
1614                         //echo "[$feed/$query]\n";
1615
1616                         $result = db_query($link, $query);
1617
1618                 } else {
1619
1620                         $result = db_query($link, "SELECT COUNT(post_int_id) AS unread
1621                                 FROM ttrss_tags,ttrss_user_entries,ttrss_entries
1622                                 WHERE tag_name = '$feed' AND post_int_id = int_id AND ref_id = ttrss_entries.id
1623                                 AND $unread_qpart AND ttrss_tags.owner_uid = " . $owner_uid);
1624                 }
1625
1626                 $unread = db_fetch_result($result, 0, "unread");
1627
1628                 return $unread;
1629         }
1630
1631         function getGlobalUnread($link, $user_id = false) {
1632
1633                 if (!$user_id) {
1634                         $user_id = $_SESSION["uid"];
1635                 }
1636
1637                 $result = db_query($link, "SELECT SUM(value) AS c_id FROM ttrss_counters_cache
1638                         WHERE owner_uid = '$user_id' AND feed_id > 0");
1639
1640                 $c_id = db_fetch_result($result, 0, "c_id");
1641
1642                 return $c_id;
1643         }
1644
1645         function getGlobalCounters($link, $global_unread = -1) {
1646                 $ret_arr = array();
1647
1648                 if ($global_unread == -1) {
1649                         $global_unread = getGlobalUnread($link);
1650                 }
1651
1652                 $cv = array("id" => "global-unread",
1653                         "counter" => $global_unread);
1654
1655                 array_push($ret_arr, $cv);
1656
1657                 $result = db_query($link, "SELECT COUNT(id) AS fn FROM
1658                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1659
1660                 $subscribed_feeds = db_fetch_result($result, 0, "fn");
1661
1662                 $cv = array("id" => "subscribed-feeds",
1663                         "counter" => $subscribed_feeds);
1664
1665                 array_push($ret_arr, $cv);
1666
1667                 return $ret_arr;
1668         }
1669
1670         function getTagCounters($link) {
1671
1672                 $ret_arr = array();
1673
1674                 $result = db_query($link, "SELECT tag_name,SUM((SELECT COUNT(int_id)
1675                         FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1676                                 AND ref_id = id AND unread = true)) AS count FROM ttrss_tags
1677                                 WHERE owner_uid = ".$_SESSION['uid']." GROUP BY tag_name
1678                                 ORDER BY count DESC LIMIT 55");
1679
1680                 $tags = array();
1681
1682                 while ($line = db_fetch_assoc($result)) {
1683                         $tags[$line["tag_name"]] += $line["count"];
1684                 }
1685
1686                 foreach (array_keys($tags) as $tag) {
1687                         $unread = $tags[$tag];
1688                         $tag = htmlspecialchars($tag);
1689
1690                         $cv = array("id" => $tag,
1691                                 "kind" => "tag",
1692                                 "counter" => $unread);
1693
1694                         array_push($ret_arr, $cv);
1695                 }
1696
1697                 return $ret_arr;
1698         }
1699
1700         function getVirtCounters($link) {
1701
1702                 $ret_arr = array();
1703
1704                 for ($i = 0; $i >= -4; $i--) {
1705
1706                         $count = getFeedUnread($link, $i);
1707
1708                         $cv = array("id" => $i,
1709                                 "counter" => $count);
1710
1711 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1712 //                              $cv["xmsg"] = getFeedArticles($link, $i)." ".__("total");
1713
1714                         array_push($ret_arr, $cv);
1715                 }
1716
1717                 return $ret_arr;
1718         }
1719
1720         function getLabelCounters($link, $descriptions = false) {
1721
1722                 $ret_arr = array();
1723
1724                 $owner_uid = $_SESSION["uid"];
1725
1726                 $result = db_query($link, "SELECT id, caption FROM ttrss_labels2
1727                         WHERE owner_uid = '$owner_uid'");
1728
1729                 while ($line = db_fetch_assoc($result)) {
1730
1731                         $id = -$line["id"] - 11;
1732
1733                         $label_name = $line["caption"];
1734                         $count = getFeedUnread($link, $id);
1735
1736                         $cv = array("id" => $id,
1737                                 "counter" => $count);
1738
1739                         if ($descriptions)
1740                                 $cv["description"] = $label_name;
1741
1742 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1743 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1744
1745                         array_push($ret_arr, $cv);
1746                 }
1747
1748                 return $ret_arr;
1749         }
1750
1751         function getFeedCounters($link, $active_feed = false) {
1752
1753                 $ret_arr = array();
1754
1755                 $query = "SELECT ttrss_feeds.id,
1756                                 ttrss_feeds.title,
1757                                 ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
1758                                 last_error, value AS count
1759                         FROM ttrss_feeds, ttrss_counters_cache
1760                         WHERE ttrss_feeds.owner_uid = ".$_SESSION["uid"]."
1761                                 AND ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid
1762                                 AND ttrss_counters_cache.feed_id = id";
1763
1764                 $result = db_query($link, $query);
1765                 $fctrs_modified = false;
1766
1767                 while ($line = db_fetch_assoc($result)) {
1768
1769                         $id = $line["id"];
1770                         $count = $line["count"];
1771                         $last_error = htmlspecialchars($line["last_error"]);
1772
1773                         $last_updated = make_local_datetime($link, $line['last_updated'], false);
1774
1775                         $has_img = feed_has_icon($id);
1776
1777                         if (date('Y') - date('Y', strtotime($line['last_updated'])) > 2)
1778                                 $last_updated = '';
1779
1780                         $cv = array("id" => $id,
1781                                 "updated" => $last_updated,
1782                                 "counter" => $count,
1783                                 "has_img" => (int) $has_img);
1784
1785                         if ($last_error)
1786                                 $cv["error"] = $last_error;
1787
1788 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1789 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1790
1791                         if ($active_feed && $id == $active_feed)
1792                                 $cv["title"] = truncate_string($line["title"], 30);
1793
1794                         array_push($ret_arr, $cv);
1795
1796                 }
1797
1798                 return $ret_arr;
1799         }
1800
1801         function get_pgsql_version($link) {
1802                 $result = db_query($link, "SELECT version() AS version");
1803                 $version = explode(" ", db_fetch_result($result, 0, "version"));
1804                 return $version[1];
1805         }
1806
1807         /**
1808          * @return array (code => Status code, message => error message if available)
1809          *
1810          *                 0 - OK, Feed already exists
1811          *                 1 - OK, Feed added
1812          *                 2 - Invalid URL
1813          *                 3 - URL content is HTML, no feeds available
1814          *                 4 - URL content is HTML which contains multiple feeds.
1815          *                     Here you should call extractfeedurls in rpc-backend
1816          *                     to get all possible feeds.
1817          *                 5 - Couldn't download the URL content.
1818          */
1819         function subscribe_to_feed($link, $url, $cat_id = 0,
1820                         $auth_login = '', $auth_pass = '', $need_auth = false) {
1821
1822                 global $fetch_last_error;
1823
1824                 require_once "include/rssfuncs.php";
1825
1826                 $url = fix_url($url);
1827
1828                 if (!$url || !validate_feed_url($url)) return array("code" => 2);
1829
1830                 $update_method = 0;
1831
1832                 $result = db_query($link, "SELECT twitter_oauth FROM ttrss_users
1833                         WHERE id = ".$_SESSION['uid']);
1834
1835                 $has_oauth = db_fetch_result($result, 0, 'twitter_oauth');
1836
1837                 if (!$need_auth || !$has_oauth || strpos($url, '://api.twitter.com') === false) {
1838                         if (!fetch_file_contents($url, false, $auth_login, $auth_pass))
1839                                 return array("code" => 5, "message" => $fetch_last_error);
1840
1841                         if (url_is_html($url, $auth_login, $auth_pass)) {
1842                                 $feedUrls = get_feeds_from_html($url, $auth_login, $auth_pass);
1843                                 if (count($feedUrls) == 0) {
1844                                         return array("code" => 3);
1845                                 } else if (count($feedUrls) > 1) {
1846                                         return array("code" => 4);
1847                                 }
1848                                 //use feed url as new URL
1849                                 $url = key($feedUrls);
1850                         }
1851
1852                         } else {
1853                                 if (!fetch_twitter_rss($link, $url, $_SESSION['uid']))
1854                                         return array("code" => 5);
1855
1856                                 $update_method = 3;
1857                         }
1858                 if ($cat_id == "0" || !$cat_id) {
1859                         $cat_qpart = "NULL";
1860                 } else {
1861                         $cat_qpart = "'$cat_id'";
1862                 }
1863
1864                 $result = db_query($link,
1865                         "SELECT id FROM ttrss_feeds
1866                         WHERE feed_url = '$url' AND owner_uid = ".$_SESSION["uid"]);
1867
1868                 if (db_num_rows($result) == 0) {
1869                         $result = db_query($link,
1870                                 "INSERT INTO ttrss_feeds
1871                                         (owner_uid,feed_url,title,cat_id, auth_login,auth_pass,update_method)
1872                                 VALUES ('".$_SESSION["uid"]."', '$url',
1873                                 '[Unknown]', $cat_qpart, '$auth_login', '$auth_pass', '$update_method')");
1874
1875                         $result = db_query($link,
1876                                 "SELECT id FROM ttrss_feeds WHERE feed_url = '$url'
1877                                         AND owner_uid = " . $_SESSION["uid"]);
1878
1879                         $feed_id = db_fetch_result($result, 0, "id");
1880
1881                         if ($feed_id) {
1882                                 update_rss_feed($link, $feed_id, true);
1883                         }
1884
1885                         return array("code" => 1);
1886                 } else {
1887                         return array("code" => 0);
1888                 }
1889         }
1890
1891         function print_feed_select($link, $id, $default_id = "",
1892                 $attributes = "", $include_all_feeds = true,
1893                 $root_id = false, $nest_level = 0) {
1894
1895                 if (!$root_id) {
1896                         print "<select id=\"$id\" name=\"$id\" $attributes>";
1897                         if ($include_all_feeds) {
1898                                 $is_selected = ("0" == $default_id) ? "selected=\"1\"" : "";
1899                                 print "<option $is_selected value=\"0\">".__('All feeds')."</option>";
1900                         }
1901                 }
1902
1903                 if (get_pref($link, 'ENABLE_FEED_CATS')) {
1904
1905                         if ($root_id)
1906                                 $parent_qpart = "parent_cat = '$root_id'";
1907                         else
1908                                 $parent_qpart = "parent_cat IS NULL";
1909
1910                         $result = db_query($link, "SELECT id,title,
1911                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1912                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1913                                 FROM ttrss_feed_categories
1914                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1915
1916                         while ($line = db_fetch_assoc($result)) {
1917
1918                                 for ($i = 0; $i < $nest_level; $i++)
1919                                         $line["title"] = " - " . $line["title"];
1920
1921                                 $is_selected = ("CAT:".$line["id"] == $default_id) ? "selected=\"1\"" : "";
1922
1923                                 printf("<option $is_selected value='CAT:%d'>%s</option>",
1924                                         $line["id"], htmlspecialchars($line["title"]));
1925
1926                                 if ($line["num_children"] > 0)
1927                                         print_feed_select($link, $id, $default_id, $attributes,
1928                                                 $include_all_feeds, $line["id"], $nest_level+1);
1929
1930                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1931                                         WHERE cat_id = '".$line["id"]."' AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1932
1933                                 while ($fline = db_fetch_assoc($feed_result)) {
1934                                         $is_selected = ($fline["id"] == $default_id) ? "selected=\"1\"" : "";
1935
1936                                         $fline["title"] = " + " . $fline["title"];
1937
1938                                         for ($i = 0; $i < $nest_level; $i++)
1939                                                 $fline["title"] = " - " . $fline["title"];
1940
1941                                         printf("<option $is_selected value='%d'>%s</option>",
1942                                                 $fline["id"], htmlspecialchars($fline["title"]));
1943                                 }
1944                         }
1945
1946                         if (!$root_id) {
1947                                 $is_selected = ($default_id == "CAT:0") ? "selected=\"1\"" : "";
1948
1949                                 printf("<option $is_selected value='CAT:0'>%s</option>",
1950                                         __("Uncategorized"));
1951
1952                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1953                                         WHERE cat_id IS NULL AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1954
1955                                 while ($fline = db_fetch_assoc($feed_result)) {
1956                                         $is_selected = ($fline["id"] == $default_id && !$default_is_cat) ? "selected=\"1\"" : "";
1957
1958                                         $fline["title"] = " + " . $fline["title"];
1959
1960                                         for ($i = 0; $i < $nest_level; $i++)
1961                                                 $fline["title"] = " - " . $fline["title"];
1962
1963                                         printf("<option $is_selected value='%d'>%s</option>",
1964                                                 $fline["id"], htmlspecialchars($fline["title"]));
1965                                 }
1966                         }
1967
1968                 } else {
1969                         $result = db_query($link, "SELECT id,title FROM ttrss_feeds
1970                                 WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
1971
1972                         while ($line = db_fetch_assoc($result)) {
1973
1974                                 $is_selected = ($line["id"] == $default_id) ? "selected=\"1\"" : "";
1975
1976                                 printf("<option $is_selected value='%d'>%s</option>",
1977                                         $line["id"], htmlspecialchars($line["title"]));
1978                         }
1979                 }
1980
1981                 if (!$root_id) {
1982                         print "</select>";
1983                 }
1984         }
1985
1986         function print_feed_cat_select($link, $id, $default_id,
1987                 $attributes, $include_all_cats = true, $root_id = false, $nest_level = 0) {
1988
1989                         if (!$root_id) {
1990                                         print "<select id=\"$id\" name=\"$id\" default=\"$default_id\" onchange=\"catSelectOnChange(this)\" $attributes>";
1991                         }
1992
1993                         if ($root_id)
1994                                 $parent_qpart = "parent_cat = '$root_id'";
1995                         else
1996                                 $parent_qpart = "parent_cat IS NULL";
1997
1998                         $result = db_query($link, "SELECT id,title,
1999                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
2000                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
2001                                 FROM ttrss_feed_categories
2002                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
2003
2004                         while ($line = db_fetch_assoc($result)) {
2005                                 if ($line["id"] == $default_id) {
2006                                         $is_selected = "selected=\"1\"";
2007                                 } else {
2008                                         $is_selected = "";
2009                                 }
2010
2011                                 for ($i = 0; $i < $nest_level; $i++)
2012                                         $line["title"] = " - " . $line["title"];
2013
2014                                 if ($line["title"])
2015                                         printf("<option $is_selected value='%d'>%s</option>",
2016                                                 $line["id"], htmlspecialchars($line["title"]));
2017
2018                                 if ($line["num_children"] > 0)
2019                                         print_feed_cat_select($link, $id, $default_id, $attributes,
2020                                                 $include_all_cats, $line["id"], $nest_level+1);
2021                         }
2022
2023                         if (!$root_id) {
2024                                 if ($include_all_cats) {
2025                                         if (db_num_rows($result) > 0) {
2026                                                 print "<option disabled=\"1\">--------</option>";
2027                                         }
2028
2029                                         if ($default_id == 0) {
2030                                                 $is_selected = "selected=\"1\"";
2031                                         } else {
2032                                                 $is_selected = "";
2033                                         }
2034
2035                                         print "<option $is_selected value=\"0\">".__('Uncategorized')."</option>";
2036                                 }
2037                                 print "</select>";
2038                         }
2039                 }
2040
2041         function checkbox_to_sql_bool($val) {
2042                 return ($val == "on") ? "true" : "false";
2043         }
2044
2045         function getFeedCatTitle($link, $id) {
2046                 if ($id == -1) {
2047                         return __("Special");
2048                 } else if ($id < -10) {
2049                         return __("Labels");
2050                 } else if ($id > 0) {
2051                         $result = db_query($link, "SELECT ttrss_feed_categories.title
2052                                 FROM ttrss_feeds, ttrss_feed_categories WHERE ttrss_feeds.id = '$id' AND
2053                                         cat_id = ttrss_feed_categories.id");
2054                         if (db_num_rows($result) == 1) {
2055                                 return db_fetch_result($result, 0, "title");
2056                         } else {
2057                                 return __("Uncategorized");
2058                         }
2059                 } else {
2060                         return "getFeedCatTitle($id) failed";
2061                 }
2062
2063         }
2064
2065         function getFeedIcon($id) {
2066                 switch ($id) {
2067                 case 0:
2068                         return "images/archive.png";
2069                         break;
2070                 case -1:
2071                         return "images/mark_set.png";
2072                         break;
2073                 case -2:
2074                         return "images/pub_set.png";
2075                         break;
2076                 case -3:
2077                         return "images/fresh.png";
2078                         break;
2079                 case -4:
2080                         return "images/tag.png";
2081                         break;
2082                 case -6:
2083                         return "images/recently_read.png";
2084                         break;
2085                 default:
2086                         if ($id < -10) {
2087                                 return "images/label.png";
2088                         } else {
2089                                 if (file_exists(ICONS_DIR . "/$id.ico"))
2090                                         return ICONS_URL . "/$id.ico";
2091                         }
2092                         break;
2093                 }
2094         }
2095
2096         function getFeedTitle($link, $id) {
2097                 if ($id == -1) {
2098                         return __("Starred articles");
2099                 } else if ($id == -2) {
2100                         return __("Published articles");
2101                 } else if ($id == -3) {
2102                         return __("Fresh articles");
2103                 } else if ($id == -4) {
2104                         return __("All articles");
2105                 } else if ($id === 0 || $id === "0") {
2106                         return __("Archived articles");
2107                 } else if ($id == -6) {
2108                         return __("Recently read");
2109                 } else if ($id < -10) {
2110                         $label_id = -$id - 11;
2111                         $result = db_query($link, "SELECT caption FROM ttrss_labels2 WHERE id = '$label_id'");
2112                         if (db_num_rows($result) == 1) {
2113                                 return db_fetch_result($result, 0, "caption");
2114                         } else {
2115                                 return "Unknown label ($label_id)";
2116                         }
2117
2118                 } else if (is_numeric($id) && $id > 0) {
2119                         $result = db_query($link, "SELECT title FROM ttrss_feeds WHERE id = '$id'");
2120                         if (db_num_rows($result) == 1) {
2121                                 return db_fetch_result($result, 0, "title");
2122                         } else {
2123                                 return "Unknown feed ($id)";
2124                         }
2125                 } else {
2126                         return $id;
2127                 }
2128         }
2129
2130         function make_init_params($link) {
2131                 $params = array();
2132
2133                 $params["theme"] = get_user_theme($link);
2134                 $params["theme_options"] = get_user_theme_options($link);
2135
2136                 $params["sign_progress"] = theme_image($link, "images/indicator_white.gif");
2137                 $params["sign_progress_tiny"] = theme_image($link, "images/indicator_tiny.gif");
2138                 $params["sign_excl"] = theme_image($link, "images/sign_excl.png");
2139                 $params["sign_info"] = theme_image($link, "images/sign_info.png");
2140
2141                 foreach (array("ON_CATCHUP_SHOW_NEXT_FEED", "HIDE_READ_FEEDS",
2142                         "ENABLE_FEED_CATS", "FEEDS_SORT_BY_UNREAD", "CONFIRM_FEED_CATCHUP",
2143                         "CDM_AUTO_CATCHUP", "FRESH_ARTICLE_MAX_AGE", "DEFAULT_ARTICLE_LIMIT",
2144                         "HIDE_READ_SHOWS_SPECIAL", "COMBINED_DISPLAY_MODE") as $param) {
2145
2146                                  $params[strtolower($param)] = (int) get_pref($link, $param);
2147                  }
2148
2149                 $params["icons_url"] = ICONS_URL;
2150                 $params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
2151                 $params["default_include_children"] = get_pref($link, "_DEFAULT_INCLUDE_CHILDREN");
2152                 $params["default_view_mode"] = get_pref($link, "_DEFAULT_VIEW_MODE");
2153                 $params["default_view_limit"] = (int) get_pref($link, "_DEFAULT_VIEW_LIMIT");
2154                 $params["default_view_order_by"] = get_pref($link, "_DEFAULT_VIEW_ORDER_BY");
2155                 $params["bw_limit"] = (int) $_SESSION["bw_limit"];
2156
2157                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2158                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2159
2160                 $max_feed_id = db_fetch_result($result, 0, "mid");
2161                 $num_feeds = db_fetch_result($result, 0, "nf");
2162
2163                 $params["max_feed_id"] = (int) $max_feed_id;
2164                 $params["num_feeds"] = (int) $num_feeds;
2165
2166                 $params["collapsed_feedlist"] = (int) get_pref($link, "_COLLAPSED_FEEDLIST");
2167
2168                 $params["csrf_token"] = $_SESSION["csrf_token"];
2169
2170                 return $params;
2171         }
2172
2173         function make_runtime_info($link) {
2174                 $data = array();
2175
2176                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2177                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2178
2179                 $max_feed_id = db_fetch_result($result, 0, "mid");
2180                 $num_feeds = db_fetch_result($result, 0, "nf");
2181
2182                 $data["max_feed_id"] = (int) $max_feed_id;
2183                 $data["num_feeds"] = (int) $num_feeds;
2184
2185                 $data['last_article_id'] = getLastArticleId($link);
2186                 $data['cdm_expanded'] = get_pref($link, 'CDM_EXPANDED');
2187
2188                 if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
2189
2190                         $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
2191
2192                         if (time() - $_SESSION["daemon_stamp_check"] > 30) {
2193
2194                                 $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
2195
2196                                 if ($stamp) {
2197                                         $stamp_delta = time() - $stamp;
2198
2199                                         if ($stamp_delta > 1800) {
2200                                                 $stamp_check = 0;
2201                                         } else {
2202                                                 $stamp_check = 1;
2203                                                 $_SESSION["daemon_stamp_check"] = time();
2204                                         }
2205
2206                                         $data['daemon_stamp_ok'] = $stamp_check;
2207
2208                                         $stamp_fmt = date("Y.m.d, G:i", $stamp);
2209
2210                                         $data['daemon_stamp'] = $stamp_fmt;
2211                                 }
2212                         }
2213                 }
2214
2215                 if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
2216                                 $new_version_details = @check_for_update($link);
2217
2218                                 $data['new_version_available'] = (int) ($new_version_details != false);
2219
2220                                 $_SESSION["last_version_check"] = time();
2221                                 $_SESSION["version_data"] = $new_version_details;
2222                 }
2223
2224                 return $data;
2225         }
2226
2227         function search_to_sql($link, $search, $match_on) {
2228
2229                 $search_query_part = "";
2230
2231                 $keywords = explode(" ", $search);
2232                 $query_keywords = array();
2233
2234                 foreach ($keywords as $k) {
2235                         if (strpos($k, "-") === 0) {
2236                                 $k = substr($k, 1);
2237                                 $not = "NOT";
2238                         } else {
2239                                 $not = "";
2240                         }
2241
2242                         $commandpair = explode(":", mb_strtolower($k), 2);
2243
2244                         if ($commandpair[0] == "note" && $commandpair[1]) {
2245
2246                                 if ($commandpair[1] == "true")
2247                                         array_push($query_keywords, "($not (note IS NOT NULL AND note != ''))");
2248                                 else
2249                                         array_push($query_keywords, "($not (note IS NULL OR note = ''))");
2250
2251                         } else if ($commandpair[0] == "star" && $commandpair[1]) {
2252
2253                                 if ($commandpair[1] == "true")
2254                                         array_push($query_keywords, "($not (marked = true))");
2255                                 else
2256                                         array_push($query_keywords, "($not (marked = false))");
2257
2258                         } else if ($commandpair[0] == "pub" && $commandpair[1]) {
2259
2260                                 if ($commandpair[1] == "true")
2261                                         array_push($query_keywords, "($not (published = true))");
2262                                 else
2263                                         array_push($query_keywords, "($not (published = false))");
2264
2265                         } else if (strpos($k, "@") === 0) {
2266
2267                                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $_SESSION['uid']);
2268                                 $orig_ts = strtotime(substr($k, 1));
2269                                 $k = date("Y-m-d", convert_timestamp($orig_ts, $user_tz_string, 'UTC'));
2270
2271                                 //$k = date("Y-m-d", strtotime(substr($k, 1)));
2272
2273                                 array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
2274                         } else if ($match_on == "both") {
2275                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2276                                                 OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2277                         } else if ($match_on == "title") {
2278                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%'))");
2279                         } else if ($match_on == "content") {
2280                                 array_push($query_keywords, "(UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2281                         }
2282                 }
2283
2284                 $search_query_part = implode("AND", $query_keywords);
2285
2286                 return $search_query_part;
2287         }
2288
2289         function getChildCategories($link, $cat, $owner_uid) {
2290                 $rv = array();
2291
2292                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories
2293                         WHERE parent_cat = '$cat' AND owner_uid = $owner_uid");
2294
2295                 while ($line = db_fetch_assoc($result)) {
2296                         array_push($rv, $line["id"]);
2297                         $rv = array_merge($rv, getChildCategories($link, $line["id"], $owner_uid));
2298                 }
2299
2300                 return $rv;
2301         }
2302
2303         function queryFeedHeadlines($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, $include_children = false) {
2304
2305                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2306
2307                 $ext_tables_part = "";
2308
2309                         if ($search) {
2310
2311                                 if (SPHINX_ENABLED) {
2312                                         $ids = join(",", @sphinx_search($search, 0, 500));
2313
2314                                         if ($ids)
2315                                                 $search_query_part = "ref_id IN ($ids) AND ";
2316                                         else
2317                                                 $search_query_part = "ref_id = -1 AND ";
2318
2319                                 } else {
2320                                         $search_query_part = search_to_sql($link, $search, $match_on);
2321                                         $search_query_part .= " AND ";
2322                                 }
2323
2324                         } else {
2325                                 $search_query_part = "";
2326                         }
2327
2328                         if ($filter) {
2329                                 $filter_query_part = filter_to_sql($filter);
2330                         } else {
2331                                 $filter_query_part = "";
2332                         }
2333
2334                         if ($since_id) {
2335                                 $since_id_part = "ttrss_entries.id > $since_id AND ";
2336                         } else {
2337                                 $since_id_part = "";
2338                         }
2339
2340                         $view_query_part = "";
2341
2342                         if ($view_mode == "adaptive" || $view_query_part == "noscores") {
2343                                 if ($search) {
2344                                         $view_query_part = " ";
2345                                 } else if ($feed != -1) {
2346                                         $unread = getFeedUnread($link, $feed, $cat_view);
2347
2348                                         if ($cat_view && $feed > 0 && $include_children)
2349                                                 $unread += getCategoryChildrenUnread($link, $feed);
2350
2351                                         if ($unread > 0) {
2352                                                 $view_query_part = " unread = true AND ";
2353                                         }
2354                                 }
2355                         }
2356
2357                         if ($view_mode == "marked") {
2358                                 $view_query_part = " marked = true AND ";
2359                         }
2360
2361                         if ($view_mode == "published") {
2362                                 $view_query_part = " published = true AND ";
2363                         }
2364
2365                         if ($view_mode == "unread") {
2366                                 $view_query_part = " unread = true AND ";
2367                         }
2368
2369                         if ($view_mode == "updated") {
2370                                 $view_query_part = " (last_read is null and unread = false) AND ";
2371                         }
2372
2373                         if ($limit > 0) {
2374                                 $limit_query_part = "LIMIT " . $limit;
2375                         }
2376
2377                         $vfeed_query_part = "";
2378
2379                         // override query strategy and enable feed display when searching globally
2380                         if ($search && $search_mode == "all_feeds") {
2381                                 $query_strategy_part = "ttrss_entries.id > 0";
2382                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2383                         /* tags */
2384                         } else if (preg_match("/^-?[0-9][0-9]*$/", $feed) == false) {
2385                                 $query_strategy_part = "ttrss_entries.id > 0";
2386                                 $vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
2387                                         id = feed_id) as feed_title,";
2388                         } else if ($feed > 0 && $search && $search_mode == "this_cat") {
2389
2390                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2391
2392                                 $tmp_result = false;
2393
2394                                 if ($cat_view) {
2395                                         $tmp_result = db_query($link, "SELECT id
2396                                                 FROM ttrss_feeds WHERE cat_id = '$feed'");
2397                                 } else {
2398                                         $tmp_result = db_query($link, "SELECT id
2399                                                 FROM ttrss_feeds WHERE cat_id = (SELECT cat_id FROM ttrss_feeds
2400                                                         WHERE id = '$feed') AND id != '$feed'");
2401                                 }
2402
2403                                 $cat_siblings = array();
2404
2405                                 if (db_num_rows($tmp_result) > 0) {
2406                                         while ($p = db_fetch_assoc($tmp_result)) {
2407                                                 array_push($cat_siblings, "feed_id = " . $p["id"]);
2408                                         }
2409
2410                                         $query_strategy_part = sprintf("(feed_id = %d OR %s)",
2411                                                 $feed, implode(" OR ", $cat_siblings));
2412
2413                                 } else {
2414                                         $query_strategy_part = "ttrss_entries.id > 0";
2415                                 }
2416
2417                         } else if ($feed > 0) {
2418
2419                                 if ($cat_view) {
2420
2421                                         if ($feed > 0) {
2422                                                 if ($include_children) {
2423                                                         # sub-cats
2424                                                         $subcats = getChildCategories($link, $feed, $owner_uid);
2425
2426                                                         if (count($subcats) == 0) {
2427                                                                 $query_strategy_part = "cat_id = '$feed'";
2428                                                         } else {
2429                                                                 array_push($subcats, $feed);
2430                                                                 $query_strategy_part = "cat_id IN (".
2431                                                                         implode(",", $subcats).")";
2432                                                         }
2433                                                 } else {
2434                                                         $query_strategy_part = "cat_id = '$feed'";
2435                                                 }
2436
2437                                         } else {
2438                                                 $query_strategy_part = "cat_id IS NULL";
2439                                         }
2440
2441                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2442
2443                                 } else {
2444                                         $query_strategy_part = "feed_id = '$feed'";
2445                                 }
2446                         } else if ($feed == 0 && !$cat_view) { // archive virtual feed
2447                                 $query_strategy_part = "feed_id IS NULL";
2448                         } else if ($feed == 0 && $cat_view) { // uncategorized
2449                                 $query_strategy_part = "cat_id IS NULL AND feed_id IS NOT NULL";
2450                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2451                         } else if ($feed == -1) { // starred virtual feed
2452                                 $query_strategy_part = "marked = true";
2453                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2454                         } else if ($feed == -2) { // published virtual feed OR labels category
2455
2456                                 if (!$cat_view) {
2457                                         $query_strategy_part = "published = true";
2458                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2459                                 } else {
2460                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2461
2462                                         $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2463
2464                                         $query_strategy_part = "ttrss_labels2.id = ttrss_user_labels2.label_id AND
2465                                                 ttrss_user_labels2.article_id = ref_id";
2466
2467                                 }
2468                         } else if ($feed == -6) { // recently read
2469                                 $query_strategy_part = "unread = false";
2470                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2471                                 $override_order = "last_read DESC";
2472                         } else if ($feed == -3) { // fresh virtual feed
2473                                 $query_strategy_part = "unread = true AND score >= 0";
2474
2475                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
2476
2477                                 if (DB_TYPE == "pgsql") {
2478                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
2479                                 } else {
2480                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
2481                                 }
2482
2483                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2484                         } else if ($feed == -4) { // all articles virtual feed
2485                                 $query_strategy_part = "true";
2486                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2487                         } else if ($feed <= -10) { // labels
2488                                 $label_id = -$feed - 11;
2489
2490                                 $query_strategy_part = "label_id = '$label_id' AND
2491                                         ttrss_labels2.id = ttrss_user_labels2.label_id AND
2492                                         ttrss_user_labels2.article_id = ref_id";
2493
2494                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2495                                 $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2496
2497                         } else {
2498                                 $query_strategy_part = "id > 0"; // dumb
2499                         }
2500
2501                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
2502                                 $date_sort_field = "updated";
2503                         } else {
2504                                 $date_sort_field = "date_entered";
2505                         }
2506
2507                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
2508                                 $order_by = "$date_sort_field";
2509                         } else {
2510                                 $order_by = "$date_sort_field DESC";
2511                         }
2512
2513                         if ($view_mode != "noscores") {
2514                                 $order_by = "score DESC, $order_by";
2515                         }
2516
2517                         if ($override_order) {
2518                                 $order_by = $override_order;
2519                         }
2520
2521                         $feed_title = "";
2522
2523                         if ($search) {
2524                                 $feed_title = "Search results";
2525                         } else {
2526                                 if ($cat_view) {
2527                                         $feed_title = getCategoryTitle($link, $feed);
2528                                 } else {
2529                                         if (is_numeric($feed) && $feed > 0) {
2530                                                 $result = db_query($link, "SELECT title,site_url,last_error
2531                                                         FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = $owner_uid");
2532
2533                                                 $feed_title = db_fetch_result($result, 0, "title");
2534                                                 $feed_site_url = db_fetch_result($result, 0, "site_url");
2535                                                 $last_error = db_fetch_result($result, 0, "last_error");
2536                                         } else {
2537                                                 $feed_title = getFeedTitle($link, $feed);
2538                                         }
2539                                 }
2540                         }
2541
2542                         $content_query_part = "content as content_preview,";
2543
2544                         if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
2545
2546                                 if ($feed >= 0) {
2547                                         $feed_kind = "Feeds";
2548                                 } else {
2549                                         $feed_kind = "Labels";
2550                                 }
2551
2552                                 if ($limit_query_part) {
2553                                         $offset_query_part = "OFFSET $offset";
2554                                 }
2555
2556                                 if ($vfeed_query_part && get_pref($link, 'VFEED_GROUP_BY_FEED', $owner_uid)) {
2557                                         if (!$override_order) {
2558                                                 $order_by = "ttrss_feeds.title, $order_by";
2559                                         }
2560                                 }
2561
2562                                 if ($feed != "0") {
2563                                         $from_qpart = "ttrss_entries,ttrss_user_entries,ttrss_feeds$ext_tables_part";
2564                                         $feed_check_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
2565
2566                                 } else {
2567                                         $from_qpart = "ttrss_entries,ttrss_user_entries$ext_tables_part
2568                                                 LEFT JOIN ttrss_feeds ON (feed_id = ttrss_feeds.id)";
2569                                 }
2570
2571                                 $query = "SELECT DISTINCT
2572                                                 date_entered,
2573                                                 guid,
2574                                                 ttrss_entries.id,ttrss_entries.title,
2575                                                 updated,
2576                                                 label_cache,
2577                                                 tag_cache,
2578                                                 always_display_enclosures,
2579                                                 site_url,
2580                                                 note,
2581                                                 num_comments,
2582                                                 comments,
2583                                                 int_id,
2584                                                 unread,feed_id,marked,published,link,last_read,orig_feed_id,
2585                                                 ".SUBSTRING_FOR_DATE."(last_read,1,19) as last_read_noms,
2586                                                 $vfeed_query_part
2587                                                 $content_query_part
2588                                                 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated_noms,
2589                                                 author,score
2590                                         FROM
2591                                                 $from_qpart
2592                                         WHERE
2593                                         $feed_check_qpart
2594                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
2595                                         ttrss_user_entries.owner_uid = '$owner_uid' AND
2596                                         $search_query_part
2597                                         $filter_query_part
2598                                         $view_query_part
2599                                         $since_id_part
2600                                         $query_strategy_part ORDER BY $order_by
2601                                         $limit_query_part $offset_query_part";
2602
2603                                 if ($_REQUEST["debug"]) print $query;
2604
2605                                 $result = db_query($link, $query);
2606
2607                         } else {
2608                                 // browsing by tag
2609
2610                                 $select_qpart = "SELECT DISTINCT " .
2611                                                                 "date_entered," .
2612                                                                 "guid," .
2613                                                                 "note," .
2614                                                                 "ttrss_entries.id as id," .
2615                                                                 "title," .
2616                                                                 "updated," .
2617                                                                 "unread," .
2618                                                                 "feed_id," .
2619                                                                 "orig_feed_id," .
2620                                                                 "marked," .
2621                                                                 "num_comments, " .
2622                                                                 "comments, " .
2623                                                                 "tag_cache," .
2624                                                                 "label_cache," .
2625                                                                 "link," .
2626                                                                 "last_read," .
2627                                                                 SUBSTRING_FOR_DATE . "(last_read,1,19) as last_read_noms," .
2628                                                                 $since_id_part .
2629                                                                 $vfeed_query_part .
2630                                                                 $content_query_part .
2631                                                                 SUBSTRING_FOR_DATE . "(updated,1,19) as updated_noms," .
2632                                                                 "score ";
2633
2634                                 $feed_kind = "Tags";
2635                                 $all_tags = explode(",", $feed);
2636                                 if ($search_mode == 'any') {
2637                                         $tag_sql = "tag_name in (" . implode(", ", array_map("db_quote", $all_tags)) . ")";
2638                                         $from_qpart = " FROM ttrss_entries,ttrss_user_entries,ttrss_tags ";
2639                                         $where_qpart = " WHERE " .
2640                                                                    "ref_id = ttrss_entries.id AND " .
2641                                                                    "ttrss_user_entries.owner_uid = $owner_uid AND " .
2642                                                                    "post_int_id = int_id AND $tag_sql AND " .
2643                                                                    $view_query_part .
2644                                                                    $search_query_part .
2645                                                                    $query_strategy_part . " ORDER BY $order_by " .
2646                                                                    $limit_query_part;
2647
2648                                 } else {
2649                                         $i = 1;
2650                                         $sub_selects = array();
2651                                         $sub_ands = array();
2652                                         foreach ($all_tags as $term) {
2653                                                 array_push($sub_selects, "(SELECT post_int_id from ttrss_tags WHERE tag_name = " . db_quote($term) . " AND owner_uid = $owner_uid) as A$i");
2654                                                 $i++;
2655                                         }
2656                                         if ($i > 2) {
2657                                                 $x = 1;
2658                                                 $y = 2;
2659                                                 do {
2660                                                         array_push($sub_ands, "A$x.post_int_id = A$y.post_int_id");
2661                                                         $x++;
2662                                                         $y++;
2663                                                 } while ($y < $i);
2664                                         }
2665                                         array_push($sub_ands, "A1.post_int_id = ttrss_user_entries.int_id and ttrss_user_entries.owner_uid = $owner_uid");
2666                                         array_push($sub_ands, "ttrss_user_entries.ref_id = ttrss_entries.id");
2667                                         $from_qpart = " FROM " . implode(", ", $sub_selects) . ", ttrss_user_entries, ttrss_entries";
2668                                         $where_qpart = " WHERE " . implode(" AND ", $sub_ands);
2669                                 }
2670                                 //                              error_log("TAG SQL: " . $tag_sql);
2671                                 // $tag_sql = "tag_name = '$feed'";   DEFAULT way
2672
2673                                 //                              error_log("[". $select_qpart . "][" . $from_qpart . "][" .$where_qpart . "]");
2674                                 $result = db_query($link, $select_qpart . $from_qpart . $where_qpart);
2675                         }
2676
2677                         return array($result, $feed_title, $feed_site_url, $last_error);
2678
2679         }
2680
2681         function sanitize($link, $str, $force_strip_tags = false, $owner = false, $site_url = false) {
2682                 global $purifier;
2683
2684                 if (!$owner) $owner = $_SESSION["uid"];
2685
2686                 $res = trim($str); if (!$res) return '';
2687
2688                 // create global Purifier object if needed
2689                 if (!$purifier) {
2690                         require_once 'lib/htmlpurifier/library/HTMLPurifier.auto.php';
2691
2692                         $config = HTMLPurifier_Config::createDefault();
2693
2694                         $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]";
2695
2696                         $config->set('HTML.SafeObject', true);
2697                         @$config->set('HTML', 'Allowed', $allowed);
2698                         $config->set('Output.FlashCompat', true);
2699                         $config->set('Attr.EnableID', true);
2700                         if (!defined('MOBILE_VERSION')) {
2701                                 @$config->set('Cache', 'SerializerPath', CACHE_DIR . "/htmlpurifier");
2702                         } else {
2703                                 @$config->set('Cache', 'SerializerPath', "../" . CACHE_DIR . "/htmlpurifier");
2704                         }
2705
2706                         $config->set('Filter.YouTube', true);
2707
2708                         $purifier = new HTMLPurifier($config);
2709                 }
2710
2711                 $res = $purifier->purify($res);
2712
2713                 if (get_pref($link, "STRIP_IMAGES", $owner)) {
2714                         $res = preg_replace('/<img[^>]+>/is', '', $res);
2715                 }
2716
2717                 if (strpos($res, "href=") === false)
2718                         $res = rewrite_urls($res);
2719
2720                 $charset_hack = '<head>
2721                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
2722                 </head>';
2723
2724                 $res = trim($res); if (!$res) return '';
2725
2726                 libxml_use_internal_errors(true);
2727
2728                 $doc = new DOMDocument();
2729                 $doc->loadHTML($charset_hack . $res);
2730                 $xpath = new DOMXPath($doc);
2731
2732                 $entries = $xpath->query('(//a[@href]|//img[@src])');
2733                 $br_inserted = 0;
2734
2735                 foreach ($entries as $entry) {
2736
2737                         if ($site_url) {
2738
2739                                 if ($entry->hasAttribute('href'))
2740                                         $entry->setAttribute('href',
2741                                                 rewrite_relative_url($site_url, $entry->getAttribute('href')));
2742
2743                                 if ($entry->hasAttribute('src'))
2744                                         if (preg_match('/^image.php\?i=[a-z0-9]+$/', $entry->getAttribute('src')) == 0)
2745                                                 $entry->setAttribute('src',
2746                                                         rewrite_relative_url($site_url, $entry->getAttribute('src')));
2747                         }
2748
2749                         if (strtolower($entry->nodeName) == "a") {
2750                                 $entry->setAttribute("target", "_blank");
2751                         }
2752
2753                         if (strtolower($entry->nodeName) == "img" && !$br_inserted) {
2754                                 $br = $doc->createElement("br");
2755
2756                                 if ($entry->parentNode->nextSibling) {
2757                                         $entry->parentNode->insertBefore($br, $entry->nextSibling);
2758                                         $br_inserted = 1;
2759                                 }
2760
2761                         }
2762                 }
2763
2764                 $node = $doc->getElementsByTagName('body')->item(0);
2765
2766                 return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
2767         }
2768
2769         /**
2770          * Send by mail a digest of last articles.
2771          *
2772          * @param mixed $link The database connection.
2773          * @param integer $limit The maximum number of articles by digest.
2774          * @return boolean Return false if digests are not enabled.
2775          */
2776         function send_headlines_digests($link, $debug = false) {
2777
2778                 require_once 'lib/phpmailer/class.phpmailer.php';
2779
2780                 $user_limit = 15; // amount of users to process (e.g. emails to send out)
2781                 $limit = 1000; // maximum amount of headlines to include
2782
2783                 if ($debug) _debug("Sending digests, batch of max $user_limit users, headline limit = $limit");
2784
2785                 if (DB_TYPE == "pgsql") {
2786                         $interval_query = "last_digest_sent < NOW() - INTERVAL '1 days'";
2787                 } else if (DB_TYPE == "mysql") {
2788                         $interval_query = "last_digest_sent < DATE_SUB(NOW(), INTERVAL 1 DAY)";
2789                 }
2790
2791                 $result = db_query($link, "SELECT id,email FROM ttrss_users
2792                                 WHERE email != '' AND (last_digest_sent IS NULL OR $interval_query)");
2793
2794                 while ($line = db_fetch_assoc($result)) {
2795
2796                         if (get_pref($link, 'DIGEST_ENABLE', $line['id'], false)) {
2797                                 $preferred_ts = strtotime(get_pref($link, 'DIGEST_PREFERRED_TIME', $line['id'], '00:00'));
2798
2799                                 // try to send digests within 2 hours of preferred time
2800                                 if ($preferred_ts && time() >= $preferred_ts &&
2801                                                 time() - $preferred_ts <= 7200) {
2802
2803                                         if ($debug) print "Sending digest for UID:" . $line['id'] . " - " . $line["email"] . " ... ";
2804
2805                                         $do_catchup = get_pref($link, 'DIGEST_CATCHUP', $line['id'], false);
2806
2807                                         global $tz_offset;
2808
2809                                         // reset tz_offset global to prevent tz cache clash between users
2810                                         $tz_offset = -1;
2811
2812                                         $tuple = prepare_headlines_digest($link, $line["id"], 1, $limit);
2813                                         $digest = $tuple[0];
2814                                         $headlines_count = $tuple[1];
2815                                         $affected_ids = $tuple[2];
2816                                         $digest_text = $tuple[3];
2817
2818                                         if ($headlines_count > 0) {
2819
2820                                                 $mail = new PHPMailer();
2821
2822                                                 $mail->PluginDir = "lib/phpmailer/";
2823                                                 $mail->SetLanguage("en", "lib/phpmailer/language/");
2824
2825                                                 $mail->CharSet = "UTF-8";
2826
2827                                                 $mail->From = SMTP_FROM_ADDRESS;
2828                                                 $mail->FromName = SMTP_FROM_NAME;
2829                                                 $mail->AddAddress($line["email"], $line["login"]);
2830
2831                                                 if (SMTP_HOST) {
2832                                                         $mail->Host = SMTP_HOST;
2833                                                         $mail->Mailer = "smtp";
2834                                                         $mail->SMTPAuth = SMTP_LOGIN != '';
2835                                                         $mail->Username = SMTP_LOGIN;
2836                                                         $mail->Password = SMTP_PASSWORD;
2837                                                 }
2838
2839                                                 $mail->IsHTML(true);
2840                                                 $mail->Subject = DIGEST_SUBJECT;
2841                                                 $mail->Body = $digest;
2842                                                 $mail->AltBody = $digest_text;
2843
2844                                                 $rc = $mail->Send();
2845
2846                                                 if (!$rc && $debug) print "ERROR: " . $mail->ErrorInfo;
2847
2848                                                 if ($debug) print "RC=$rc\n";
2849
2850                                                 if ($rc && $do_catchup) {
2851                                                         if ($debug) print "Marking affected articles as read...\n";
2852                                                         catchupArticlesById($link, $affected_ids, 0, $line["id"]);
2853                                                 }
2854                                         } else {
2855                                                 if ($debug) print "No headlines\n";
2856                                         }
2857
2858                                         db_query($link, "UPDATE ttrss_users SET last_digest_sent = NOW()
2859                                                 WHERE id = " . $line["id"]);
2860
2861                                 }
2862                         }
2863                 }
2864
2865                 if ($debug) _debug("All done.");
2866
2867         }
2868
2869         function prepare_headlines_digest($link, $user_id, $days = 1, $limit = 1000) {
2870
2871                 require_once "lib/MiniTemplator.class.php";
2872
2873                 $tpl = new MiniTemplator;
2874                 $tpl_t = new MiniTemplator;
2875
2876                 $tpl->readTemplateFromFile("templates/digest_template_html.txt");
2877                 $tpl_t->readTemplateFromFile("templates/digest_template.txt");
2878
2879                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $user_id);
2880                 $local_ts = convert_timestamp(time(), 'UTC', $user_tz_string);
2881
2882                 $tpl->setVariable('CUR_DATE', date('Y/m/d', $local_ts));
2883                 $tpl->setVariable('CUR_TIME', date('G:i', $local_ts));
2884
2885                 $tpl_t->setVariable('CUR_DATE', date('Y/m/d', $local_ts));
2886                 $tpl_t->setVariable('CUR_TIME', date('G:i', $local_ts));
2887
2888                 $affected_ids = array();
2889
2890                 if (DB_TYPE == "pgsql") {
2891                         $interval_query = "ttrss_entries.date_updated > NOW() - INTERVAL '$days days'";
2892                 } else if (DB_TYPE == "mysql") {
2893                         $interval_query = "ttrss_entries.date_updated > DATE_SUB(NOW(), INTERVAL $days DAY)";
2894                 }
2895
2896                 $result = db_query($link, "SELECT ttrss_entries.title,
2897                                 ttrss_feeds.title AS feed_title,
2898                                 COALESCE(ttrss_feed_categories.title, '".__('Uncategorized')."') AS cat_title,
2899                                 date_updated,
2900                                 ttrss_user_entries.ref_id,
2901                                 link,
2902                                 score,
2903                                 content,
2904                                 ".SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
2905                         FROM
2906                                 ttrss_user_entries,ttrss_entries,ttrss_feeds
2907                         LEFT JOIN
2908                                 ttrss_feed_categories ON (cat_id = ttrss_feed_categories.id)
2909                         WHERE
2910                                 ref_id = ttrss_entries.id AND feed_id = ttrss_feeds.id
2911                                 AND include_in_digest = true
2912                                 AND $interval_query
2913                                 AND ttrss_user_entries.owner_uid = $user_id
2914                                 AND unread = true
2915                                 AND score >= 0
2916                         ORDER BY ttrss_feed_categories.title, ttrss_feeds.title, score DESC, date_updated DESC
2917                         LIMIT $limit");
2918
2919                 $cur_feed_title = "";
2920
2921                 $headlines_count = db_num_rows($result);
2922
2923                 $headlines = array();
2924
2925                 while ($line = db_fetch_assoc($result)) {
2926                         array_push($headlines, $line);
2927                 }
2928
2929                 for ($i = 0; $i < sizeof($headlines); $i++) {
2930
2931                         $line = $headlines[$i];
2932
2933                         array_push($affected_ids, $line["ref_id"]);
2934
2935                         $updated = make_local_datetime($link, $line['last_updated'], false,
2936                                 $user_id);
2937
2938 /*                      if ($line["score"] != 0) {
2939                                 if ($line["score"] > 0) $line["score"] = '+' . $line["score"];
2940
2941                                 $line["title"] .= " (".$line['score'].")";
2942                         } */
2943
2944                         if (get_pref($link, 'ENABLE_FEED_CATS', $user_id)) {
2945                                 $line['feed_title'] = $line['cat_title'] . " / " . $line['feed_title'];
2946                         }
2947
2948                         $tpl->setVariable('FEED_TITLE', $line["feed_title"]);
2949                         $tpl->setVariable('ARTICLE_TITLE', $line["title"]);
2950                         $tpl->setVariable('ARTICLE_LINK', $line["link"]);
2951                         $tpl->setVariable('ARTICLE_UPDATED', $updated);
2952                         $tpl->setVariable('ARTICLE_EXCERPT',
2953                                 truncate_string(strip_tags($line["content"]), 300));
2954 //                      $tpl->setVariable('ARTICLE_CONTENT',
2955 //                              strip_tags($article_content));
2956
2957                         $tpl->addBlock('article');
2958
2959                         $tpl_t->setVariable('FEED_TITLE', $line["feed_title"]);
2960                         $tpl_t->setVariable('ARTICLE_TITLE', $line["title"]);
2961                         $tpl_t->setVariable('ARTICLE_LINK', $line["link"]);
2962                         $tpl_t->setVariable('ARTICLE_UPDATED', $updated);
2963 //                      $tpl_t->setVariable('ARTICLE_EXCERPT',
2964 //                              truncate_string(strip_tags($line["excerpt"]), 100));
2965
2966                         $tpl_t->addBlock('article');
2967
2968                         if ($headlines[$i]['feed_title'] != $headlines[$i+1]['feed_title']) {
2969                                 $tpl->addBlock('feed');
2970                                 $tpl_t->addBlock('feed');
2971                         }
2972
2973                 }
2974
2975                 $tpl->addBlock('digest');
2976                 $tpl->generateOutputToString($tmp);
2977
2978                 $tpl_t->addBlock('digest');
2979                 $tpl_t->generateOutputToString($tmp_t);
2980
2981                 return array($tmp, $headlines_count, $affected_ids, $tmp_t);
2982         }
2983
2984         function check_for_update($link) {
2985                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2986                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION;
2987
2988                         $version_data = @fetch_file_contents($version_url);
2989
2990                         if ($version_data) {
2991                                 $version_data = json_decode($version_data, true);
2992                                 if ($version_data && $version_data['version']) {
2993
2994                                         if (version_compare(VERSION, $version_data['version']) == -1) {
2995                                                 return $version_data;
2996                                         }
2997                                 }
2998                         }
2999                 }
3000                 return false;
3001         }
3002
3003         function markArticlesById($link, $ids, $cmode) {
3004
3005                 $tmp_ids = array();
3006
3007                 foreach ($ids as $id) {
3008                         array_push($tmp_ids, "ref_id = '$id'");
3009                 }
3010
3011                 $ids_qpart = join(" OR ", $tmp_ids);
3012
3013                 if ($cmode == 0) {
3014                         db_query($link, "UPDATE ttrss_user_entries SET
3015                         marked = false,last_read = NOW()
3016                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3017                 } else if ($cmode == 1) {
3018                         db_query($link, "UPDATE ttrss_user_entries SET
3019                         marked = true
3020                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3021                 } else {
3022                         db_query($link, "UPDATE ttrss_user_entries SET
3023                         marked = NOT marked,last_read = NOW()
3024                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3025                 }
3026         }
3027
3028         function publishArticlesById($link, $ids, $cmode) {
3029
3030                 $tmp_ids = array();
3031
3032                 foreach ($ids as $id) {
3033                         array_push($tmp_ids, "ref_id = '$id'");
3034                 }
3035
3036                 $ids_qpart = join(" OR ", $tmp_ids);
3037
3038                 if ($cmode == 0) {
3039                         db_query($link, "UPDATE ttrss_user_entries SET
3040                         published = false,last_read = NOW()
3041                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3042                 } else if ($cmode == 1) {
3043                         db_query($link, "UPDATE ttrss_user_entries SET
3044                         published = true
3045                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3046                 } else {
3047                         db_query($link, "UPDATE ttrss_user_entries SET
3048                         published = NOT published,last_read = NOW()
3049                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3050                 }
3051
3052                 if (PUBSUBHUBBUB_HUB) {
3053                         $rss_link = get_self_url_prefix() .
3054                                 "/public.php?op=rss&id=-2&key=" .
3055                                 get_feed_access_key($link, -2, false);
3056
3057                         $p = new Publisher(PUBSUBHUBBUB_HUB);
3058
3059                         $pubsub_result = $p->publish_update($rss_link);
3060                 }
3061         }
3062
3063         function catchupArticlesById($link, $ids, $cmode, $owner_uid = false) {
3064
3065                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3066                 if (count($ids) == 0) return;
3067
3068                 $tmp_ids = array();
3069
3070                 foreach ($ids as $id) {
3071                         array_push($tmp_ids, "ref_id = '$id'");
3072                 }
3073
3074                 $ids_qpart = join(" OR ", $tmp_ids);
3075
3076                 if ($cmode == 0) {
3077                         db_query($link, "UPDATE ttrss_user_entries SET
3078                         unread = false,last_read = NOW()
3079                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3080                 } else if ($cmode == 1) {
3081                         db_query($link, "UPDATE ttrss_user_entries SET
3082                         unread = true
3083                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3084                 } else {
3085                         db_query($link, "UPDATE ttrss_user_entries SET
3086                         unread = NOT unread,last_read = NOW()
3087                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3088                 }
3089
3090                 /* update ccache */
3091
3092                 $result = db_query($link, "SELECT DISTINCT feed_id FROM ttrss_user_entries
3093                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3094
3095                 while ($line = db_fetch_assoc($result)) {
3096                         ccache_update($link, $line["feed_id"], $owner_uid);
3097                 }
3098         }
3099
3100         function catchupArticleById($link, $id, $cmode) {
3101
3102                 if ($cmode == 0) {
3103                         db_query($link, "UPDATE ttrss_user_entries SET
3104                         unread = false,last_read = NOW()
3105                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3106                 } else if ($cmode == 1) {
3107                         db_query($link, "UPDATE ttrss_user_entries SET
3108                         unread = true
3109                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3110                 } else {
3111                         db_query($link, "UPDATE ttrss_user_entries SET
3112                         unread = NOT unread,last_read = NOW()
3113                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3114                 }
3115
3116                 $feed_id = getArticleFeed($link, $id);
3117                 ccache_update($link, $feed_id, $_SESSION["uid"]);
3118         }
3119
3120         function make_guid_from_title($title) {
3121                 return preg_replace("/[ \"\',.:;]/", "-",
3122                         mb_strtolower(strip_tags($title), 'utf-8'));
3123         }
3124
3125         function get_article_tags($link, $id, $owner_uid = 0, $tag_cache = false) {
3126
3127                 $a_id = db_escape_string($id);
3128
3129                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3130
3131                 $query = "SELECT DISTINCT tag_name,
3132                         owner_uid as owner FROM
3133                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
3134                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
3135
3136                 $obj_id = md5("TAGS:$owner_uid:$id");
3137                 $tags = array();
3138
3139                 /* check cache first */
3140
3141                 if ($tag_cache === false) {
3142                         $result = db_query($link, "SELECT tag_cache FROM ttrss_user_entries
3143                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
3144
3145                         $tag_cache = db_fetch_result($result, 0, "tag_cache");
3146                 }
3147
3148                 if ($tag_cache) {
3149                         $tags = explode(",", $tag_cache);
3150                 } else {
3151
3152                         /* do it the hard way */
3153
3154                         $tmp_result = db_query($link, $query);
3155
3156                         while ($tmp_line = db_fetch_assoc($tmp_result)) {
3157                                 array_push($tags, $tmp_line["tag_name"]);
3158                         }
3159
3160                         /* update the cache */
3161
3162                         $tags_str = db_escape_string(join(",", $tags));
3163
3164                         db_query($link, "UPDATE ttrss_user_entries
3165                                 SET tag_cache = '$tags_str' WHERE ref_id = '$id'
3166                                 AND owner_uid = $owner_uid");
3167                 }
3168
3169                 return $tags;
3170         }
3171
3172         function trim_array($array) {
3173                 $tmp = $array;
3174                 array_walk($tmp, 'trim');
3175                 return $tmp;
3176         }
3177
3178         function tag_is_valid($tag) {
3179                 if ($tag == '') return false;
3180                 if (preg_match("/^[0-9]*$/", $tag)) return false;
3181                 if (mb_strlen($tag) > 250) return false;
3182
3183                 if (function_exists('iconv')) {
3184                         $tag = iconv("utf-8", "utf-8", $tag);
3185                 }
3186
3187                 if (!$tag) return false;
3188
3189                 return true;
3190         }
3191
3192         function render_login_form($link, $mobile = 0) {
3193                 switch ($mobile) {
3194                 case 0:
3195                         require_once "login_form.php";
3196                         break;
3197                 case 1:
3198                         require_once "mobile/login_form.php";
3199                         break;
3200                 case 2:
3201                         require_once "mobile/classic/login_form.php";
3202                 }
3203         }
3204
3205         // from http://developer.apple.com/internet/safari/faq.html
3206         function no_cache_incantation() {
3207                 header("Expires: Mon, 22 Dec 1980 00:00:00 GMT"); // Happy birthday to me :)
3208                 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
3209                 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); // HTTP/1.1
3210                 header("Cache-Control: post-check=0, pre-check=0", false);
3211                 header("Pragma: no-cache"); // HTTP/1.0
3212         }
3213
3214         function format_warning($msg, $id = "") {
3215                 global $link;
3216                 return "<div class=\"warning\" id=\"$id\">
3217                         <img src=\"".theme_image($link, "images/sign_excl.png")."\">$msg</div>";
3218         }
3219
3220         function format_notice($msg, $id = "") {
3221                 global $link;
3222                 return "<div class=\"notice\" id=\"$id\">
3223                         <img src=\"".theme_image($link, "images/sign_info.png")."\">$msg</div>";
3224         }
3225
3226         function format_error($msg, $id = "") {
3227                 global $link;
3228                 return "<div class=\"error\" id=\"$id\">
3229                         <img src=\"".theme_image($link, "images/sign_excl.png")."\">$msg</div>";
3230         }
3231
3232         function print_notice($msg) {
3233                 return print format_notice($msg);
3234         }
3235
3236         function print_warning($msg) {
3237                 return print format_warning($msg);
3238         }
3239
3240         function print_error($msg) {
3241                 return print format_error($msg);
3242         }
3243
3244
3245         function T_sprintf() {
3246                 $args = func_get_args();
3247                 return vsprintf(__(array_shift($args)), $args);
3248         }
3249
3250         function format_inline_player($link, $url, $ctype) {
3251
3252                 $entry = "";
3253
3254                 if (strpos($ctype, "audio/") === 0) {
3255
3256                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
3257                                 strpos($_SERVER['HTTP_USER_AGENT'], "Chrome") !== false ||
3258                                 strpos($_SERVER['HTTP_USER_AGENT'], "Safari") !== false )) {
3259
3260                                 $id = 'AUDIO-' . uniqid();
3261
3262                                 $entry .= "<audio id=\"$id\"\">
3263                                         <source src=\"$url\"></source>
3264                                         </audio>";
3265
3266                                 $entry .= "<span onclick=\"player(this)\"
3267                                         title=\"".__("Click to play")."\" status=\"0\"
3268                                         class=\"player\" audio-id=\"$id\">".__("Play")."</span>";
3269
3270                         } else {
3271
3272                                 $entry .= "<object type=\"application/x-shockwave-flash\"
3273                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
3274                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
3275                                         <param name=\"movie\"
3276                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
3277                                         </object>";
3278                         }
3279                 }
3280
3281                 $filename = substr($url, strrpos($url, "/")+1);
3282
3283                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3284                         $filename . " (" . $ctype . ")" . "</a>";
3285
3286                 return $entry;
3287         }
3288
3289         function format_article($link, $id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
3290                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3291
3292                 $rv = array();
3293
3294                 $rv['id'] = $id;
3295
3296                 /* we can figure out feed_id from article id anyway, why do we
3297                  * pass feed_id here? let's ignore the argument :( */
3298
3299                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3300                         WHERE ref_id = '$id'");
3301
3302                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
3303
3304                 $rv['feed_id'] = $feed_id;
3305
3306                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
3307
3308                 $result = db_query($link, "SELECT rtl_content, always_display_enclosures FROM ttrss_feeds
3309                         WHERE id = '$feed_id' AND owner_uid = $owner_uid");
3310
3311                 if (db_num_rows($result) == 1) {
3312                         $rtl_content = sql_bool_to_bool(db_fetch_result($result, 0, "rtl_content"));
3313                         $always_display_enclosures = sql_bool_to_bool(db_fetch_result($result, 0, "always_display_enclosures"));
3314                 } else {
3315                         $rtl_content = false;
3316                         $always_display_enclosures = false;
3317                 }
3318
3319                 if ($rtl_content) {
3320                         $rtl_tag = "dir=\"RTL\"";
3321                         $rtl_class = "RTL";
3322                 } else {
3323                         $rtl_tag = "";
3324                         $rtl_class = "";
3325                 }
3326
3327                 if ($mark_as_read) {
3328                         $result = db_query($link, "UPDATE ttrss_user_entries
3329                                 SET unread = false,last_read = NOW()
3330                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
3331
3332                         ccache_update($link, $feed_id, $owner_uid);
3333                 }
3334
3335                 $result = db_query($link, "SELECT title,link,content,feed_id,comments,int_id,
3336                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
3337                         (SELECT icon_url FROM ttrss_feeds WHERE id = feed_id) as icon_url,
3338                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
3339                         num_comments,
3340                         tag_cache,
3341                         author,
3342                         orig_feed_id,
3343                         note
3344                         FROM ttrss_entries,ttrss_user_entries
3345                         WHERE   id = '$id' AND ref_id = id AND owner_uid = $owner_uid");
3346
3347                 if ($result) {
3348
3349                         $line = db_fetch_assoc($result);
3350
3351                         if ($line["icon_url"]) {
3352                                 $feed_icon = "<img src=\"" . $line["icon_url"] . "\">";
3353                         } else {
3354                                 $feed_icon = "&nbsp;";
3355                         }
3356
3357                         $feed_site_url = $line['site_url'];
3358
3359                         $num_comments = $line["num_comments"];
3360                         $entry_comments = "";
3361
3362                         if ($num_comments > 0) {
3363                                 if ($line["comments"]) {
3364                                         $comments_url = $line["comments"];
3365                                 } else {
3366                                         $comments_url = $line["link"];
3367                                 }
3368                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
3369                         } else {
3370                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
3371                                         $entry_comments = "<a target='_blank' href=\"".$line["comments"]."\">comments</a>";
3372                                 }
3373                         }
3374
3375                         if ($zoom_mode) {
3376                                 header("Content-Type: text/html");
3377                                 $rv['content'] .= "<html><head>
3378                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
3379                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
3380                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
3381                                         </head><body>";
3382                         }
3383
3384                         $title_escaped = db_escape_string($line['title']);
3385
3386                         $rv['content'] .= "<div id=\"PTITLE-$id\" style=\"display : none\">" .
3387                                 truncate_string(strip_tags($line['title']), 15) . "</div>";
3388
3389                         $rv['content'] .= "<div id=\"PTITLE-FULL-$id\" style=\"display : none\">" .
3390                                 strip_tags($line['title']) . "</div>";
3391
3392                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
3393
3394                         $rv['content'] .= "<div onclick=\"return postClicked(event, $id)\"
3395                                 class=\"postHeader\" id=\"POSTHDR-$id\">";
3396
3397                         $entry_author = $line["author"];
3398
3399                         if ($entry_author) {
3400                                 $entry_author = __(" - ") . $entry_author;
3401                         }
3402
3403                         $parsed_updated = make_local_datetime($link, $line["updated"], true,
3404                                 $owner_uid, true);
3405
3406                         $rv['content'] .= "<div class=\"postDate$rtl_class\">$parsed_updated</div>";
3407
3408                         if ($line["link"]) {
3409                                 $rv['content'] .= "<div class='postTitle' clear='both'><a target='_blank'
3410                                         title=\"".htmlspecialchars($line['title'])."\"
3411                                         href=\"" .
3412                                         $line["link"] . "\">" .
3413                                         truncate_string($line["title"], 100) .
3414                                         "<span class='author'>$entry_author</span></a></div>";
3415                         } else {
3416                                 $rv['content'] .= "<div class='postTitle' clear='both'>" . $line["title"] . "$entry_author</div>";
3417                         }
3418
3419                         $tag_cache = $line["tag_cache"];
3420
3421                         if (!$tag_cache)
3422                                 $tags = get_article_tags($link, $id, $owner_uid);
3423                         else
3424                                 $tags = explode(",", $tag_cache);
3425
3426                         $tags_str = format_tags_string($tags, $id);
3427                         $tags_str_full = join(", ", $tags);
3428
3429                         if (!$tags_str_full) $tags_str_full = __("no tags");
3430
3431                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
3432
3433                         $rv['content'] .= "<div class='postTags' style='float : right'>
3434                                 <img src='".theme_image($link, 'images/tag.png')."'
3435                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
3436
3437                         if (!$zoom_mode) {
3438                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
3439                                         <a title=\"".__('Edit tags for this article')."\"
3440                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
3441
3442                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
3443                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
3444                                         position=\"below\">$tags_str_full</div>";
3445
3446                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/art-zoom.png')."\"
3447                                                 class='tagsPic' style=\"cursor : pointer\"
3448                                                 onclick=\"postOpenInNewTab(event, $id)\"
3449                                                 alt='Zoom' title='".__('Open article in new tab')."'>";
3450
3451                                 $button_plugins = explode(",", ARTICLE_BUTTON_PLUGINS);
3452
3453                                 foreach ($button_plugins as $p) {
3454                                         $pclass = trim("button_${p}");
3455
3456                                         if (class_exists($pclass)) {
3457                                                 $plugin = new $pclass($link);
3458                                                 $rv['content'] .= $plugin->render($id, $line);
3459                                         }
3460                                 }
3461
3462                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/digest_checkbox.png')."\"
3463                                                 class='tagsPic' style=\"cursor : pointer\"
3464                                                 onclick=\"closeArticlePanel($id)\"
3465                                                 title='".__('Close article')."'>";
3466
3467                         } else {
3468                                 $tags_str = strip_tags($tags_str);
3469                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
3470                         }
3471                         $rv['content'] .= "</div>";
3472                         $rv['content'] .= "<div clear='both'>$entry_comments</div>";
3473
3474                         if ($line["orig_feed_id"]) {
3475
3476                                 $tmp_result = db_query($link, "SELECT * FROM ttrss_archived_feeds
3477                                         WHERE id = ".$line["orig_feed_id"]);
3478
3479                                 if (db_num_rows($tmp_result) != 0) {
3480
3481                                         $rv['content'] .= "<div clear='both'>";
3482                                         $rv['content'] .= __("Originally from:");
3483
3484                                         $rv['content'] .= "&nbsp;";
3485
3486                                         $tmp_line = db_fetch_assoc($tmp_result);
3487
3488                                         $rv['content'] .= "<a target='_blank'
3489                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
3490                                                 $tmp_line['title'] . "</a>";
3491
3492                                         $rv['content'] .= "&nbsp;";
3493
3494                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3495                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.png'></a>";
3496
3497                                         $rv['content'] .= "</div>";
3498                                 }
3499                         }
3500
3501                         $rv['content'] .= "</div>";
3502
3503                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3504                                 if ($line['note']) {
3505                                         $rv['content'] .= format_article_note($id, $line['note']);
3506                                 }
3507                         $rv['content'] .= "</div>";
3508
3509                         $rv['content'] .= "<div class=\"postIcon\">" .
3510                                 "<a target=\"_blank\" title=\"".__("Visit the website")."\"$
3511                                 href=\"".htmlspecialchars($feed_site_url)."\">".
3512                                 $feed_icon . "</a></div>";
3513
3514                         $rv['content'] .= "<div class=\"postContent\">";
3515
3516                         // N-grams
3517
3518                         if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_RELATED_THRESHOLD')) {
3519
3520                                 $ngram_result = db_query($link, "SELECT id,title FROM
3521                                                 ttrss_entries,ttrss_user_entries
3522                                         WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
3523                                                 AND similarity(title, '$title_escaped') >= "._NGRAM_TITLE_RELATED_THRESHOLD."
3524                                                 AND title != '$title_escaped'
3525                                                 AND owner_uid = $owner_uid");
3526
3527                                 if (db_num_rows($ngram_result) > 0) {
3528                                         $rv['content'] .= "<div dojoType=\"dijit.form.DropDownButton\">".
3529                                                 "<span>" . __('Related')."</span>";
3530                                         $rv['content'] .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3531
3532                                         while ($nline = db_fetch_assoc($ngram_result)) {
3533                                                 $rv['content'] .= "<div onclick=\"hlOpenInNewTab(null,".$nline['id'].")\"
3534                                                         dojoType=\"dijit.MenuItem\">".$nline['title']."</div>";
3535
3536                                         }
3537                                         $rv['content'] .= "</div></div><br/";
3538                                 }
3539                         }
3540
3541                         $article_content = sanitize($link, $line["content"], false, $owner_uid,
3542                                 $feed_site_url);
3543
3544                         $rv['content'] .= $article_content;
3545
3546                         $rv['content'] .= format_article_enclosures($link, $id,
3547                                 $always_display_enclosures, $article_content);
3548
3549                         $rv['content'] .= "</div>";
3550
3551                         $rv['content'] .= "</div>";
3552
3553                 }
3554
3555                 if ($zoom_mode) {
3556                         $rv['content'] .= "
3557                                 <div style=\"text-align : center\">
3558                                 <button onclick=\"return window.close()\">".
3559                                         __("Close this window")."</button></div>";
3560                         $rv['content'] .= "</body></html>";
3561                 }
3562
3563                 return $rv;
3564
3565         }
3566
3567         function print_checkpoint($n, $s) {
3568                 $ts = getmicrotime();
3569                 echo sprintf("<!-- CP[$n] %.4f seconds -->", $ts - $s);
3570                 return $ts;
3571         }
3572
3573         function sanitize_tag($tag) {
3574                 $tag = trim($tag);
3575
3576                 $tag = mb_strtolower($tag, 'utf-8');
3577
3578                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3579
3580 //              $tag = str_replace('"', "", $tag);
3581 //              $tag = str_replace("+", " ", $tag);
3582                 $tag = str_replace("technorati tag: ", "", $tag);
3583
3584                 return $tag;
3585         }
3586
3587         function get_self_url_prefix() {
3588                 return SELF_URL_PATH;
3589         }
3590
3591         function opml_publish_url($link){
3592
3593                 $url_path = get_self_url_prefix();
3594                 $url_path .= "/opml.php?op=publish&key=" .
3595                         get_feed_access_key($link, 'OPML:Publish', false, $_SESSION["uid"]);
3596
3597                 return $url_path;
3598         }
3599
3600         /**
3601          * Purge a feed contents, marked articles excepted.
3602          *
3603          * @param mixed $link The database connection.
3604          * @param integer $id The id of the feed to purge.
3605          * @return void
3606          */
3607         function clear_feed_articles($link, $id) {
3608
3609                 if ($id != 0) {
3610                         $result = db_query($link, "DELETE FROM ttrss_user_entries
3611                         WHERE feed_id = '$id' AND marked = false AND owner_uid = " . $_SESSION["uid"]);
3612                 } else {
3613                         $result = db_query($link, "DELETE FROM ttrss_user_entries
3614                         WHERE feed_id IS NULL AND marked = false AND owner_uid = " . $_SESSION["uid"]);
3615                 }
3616
3617                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
3618                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
3619
3620                 ccache_update($link, $id, $_SESSION['uid']);
3621         } // function clear_feed_articles
3622
3623         /**
3624          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3625          *
3626          * @return string The Mozilla Firefox feed adding URL.
3627          */
3628         function add_feed_url() {
3629                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3630
3631                 $url_path = get_self_url_prefix() .
3632                         "/backend.php?op=pref-feeds&quiet=1&method=add&feed_url=%s";
3633                 return $url_path;
3634         } // function add_feed_url
3635
3636         function encrypt_password($pass, $salt = '', $mode2 = false) {
3637                 if ($salt && $mode2) {
3638                         return "MODE2:" . hash('sha256', $salt . $pass);
3639                 } else if ($salt) {
3640                         return "SHA1X:" . sha1("$salt:$pass");
3641                 } else {
3642                         return "SHA1:" . sha1($pass);
3643                 }
3644         } // function encrypt_password
3645
3646         function sanitize_article_content($text) {
3647                 # we don't support CDATA sections in articles, they break our own escaping
3648                 $text = preg_replace("/\[\[CDATA/", "", $text);
3649                 $text = preg_replace("/\]\]\>/", "", $text);
3650                 return $text;
3651         }
3652
3653         function load_filters($link, $feed, $owner_uid, $action_id = false) {
3654                 $filters = array();
3655
3656
3657                 if ($action_id) $ftype_query_part = "action_id = '$action_id' AND";
3658
3659                 $result = db_query($link, "SELECT reg_exp,
3660                         ttrss_filter_types.name AS name,
3661                         ttrss_filter_actions.name AS action,
3662                         inverse,
3663                         action_param,
3664                         filter_param
3665                         FROM ttrss_filters
3666                                 LEFT JOIN ttrss_feeds ON (ttrss_feeds.id = '$feed'),
3667                                 ttrss_filter_types,ttrss_filter_actions
3668                         WHERE
3669                                 enabled = true AND
3670                                 $ftype_query_part
3671                                 ttrss_filters.owner_uid = $owner_uid AND
3672                                 ttrss_filter_types.id = filter_type AND
3673                                 ttrss_filter_actions.id = action_id AND
3674                                 ((cat_filter = true AND ttrss_feeds.cat_id = ttrss_filters.cat_id) OR
3675                                 (cat_filter = true AND ttrss_feeds.cat_id IS NULL AND
3676                                         ttrss_filters.cat_id IS NULL) OR
3677                                 (cat_filter = false AND (feed_id IS NULL OR feed_id = '$feed')))
3678                         ORDER BY reg_exp");
3679
3680                 while ($line = db_fetch_assoc($result)) {
3681
3682                         if (!$filters[$line["name"]]) $filters[$line["name"]] = array();
3683                                 $filter["reg_exp"] = $line["reg_exp"];
3684                                 $filter["action"] = $line["action"];
3685                                 $filter["action_param"] = $line["action_param"];
3686                                 $filter["filter_param"] = $line["filter_param"];
3687                                 $filter["inverse"] = sql_bool_to_bool($line["inverse"]);
3688
3689                                 array_push($filters[$line["name"]], $filter);
3690                         }
3691
3692
3693                 return $filters;
3694         }
3695
3696         function get_score_pic($score) {
3697                 if ($score > 100) {
3698                         return "score_high.png";
3699                 } else if ($score > 0) {
3700                         return "score_half_high.png";
3701                 } else if ($score < -100) {
3702                         return "score_low.png";
3703                 } else if ($score < 0) {
3704                         return "score_half_low.png";
3705                 } else {
3706                         return "score_neutral.png";
3707                 }
3708         }
3709
3710         function feed_has_icon($id) {
3711                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3712         }
3713
3714         function init_connection($link) {
3715                 if ($link) {
3716
3717                         if (DB_TYPE == "pgsql") {
3718                                 pg_query($link, "set client_encoding = 'UTF-8'");
3719                                 pg_set_client_encoding("UNICODE");
3720                                 pg_query($link, "set datestyle = 'ISO, european'");
3721                                 pg_query($link, "set TIME ZONE 0");
3722                         } else {
3723                                 db_query($link, "SET time_zone = '+0:0'");
3724
3725                                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
3726                                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
3727                                 }
3728                         }
3729                         return true;
3730                 } else {
3731                         print "Unable to connect to database:" . db_last_error();
3732                         return false;
3733                 }
3734         }
3735
3736         /* function ccache_zero($link, $feed_id, $owner_uid) {
3737                 db_query($link, "UPDATE ttrss_counters_cache SET
3738                         value = 0, updated = NOW() WHERE
3739                         feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3740         } */
3741
3742         function ccache_zero_all($link, $owner_uid) {
3743                 db_query($link, "UPDATE ttrss_counters_cache SET
3744                         value = 0 WHERE owner_uid = '$owner_uid'");
3745
3746                 db_query($link, "UPDATE ttrss_cat_counters_cache SET
3747                         value = 0 WHERE owner_uid = '$owner_uid'");
3748         }
3749
3750         function ccache_remove($link, $feed_id, $owner_uid, $is_cat = false) {
3751
3752                 if (!$is_cat) {
3753                         $table = "ttrss_counters_cache";
3754                 } else {
3755                         $table = "ttrss_cat_counters_cache";
3756                 }
3757
3758                 db_query($link, "DELETE FROM $table WHERE
3759                         feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3760
3761         }
3762
3763         function ccache_update_all($link, $owner_uid) {
3764
3765                 if (get_pref($link, 'ENABLE_FEED_CATS', $owner_uid)) {
3766
3767                         $result = db_query($link, "SELECT feed_id FROM ttrss_cat_counters_cache
3768                                 WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
3769
3770                         while ($line = db_fetch_assoc($result)) {
3771                                 ccache_update($link, $line["feed_id"], $owner_uid, true);
3772                         }
3773
3774                         /* We have to manually include category 0 */
3775
3776                         ccache_update($link, 0, $owner_uid, true);
3777
3778                 } else {
3779                         $result = db_query($link, "SELECT feed_id FROM ttrss_counters_cache
3780                                 WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
3781
3782                         while ($line = db_fetch_assoc($result)) {
3783                                 print ccache_update($link, $line["feed_id"], $owner_uid);
3784
3785                         }
3786
3787                 }
3788         }
3789
3790         function ccache_find($link, $feed_id, $owner_uid, $is_cat = false,
3791                 $no_update = false) {
3792
3793                 if (!is_numeric($feed_id)) return;
3794
3795                 if (!$is_cat) {
3796                         $table = "ttrss_counters_cache";
3797                         if ($feed_id > 0) {
3798                                 $tmp_result = db_query($link, "SELECT owner_uid FROM ttrss_feeds
3799                                         WHERE id = '$feed_id'");
3800                                 $owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
3801                         }
3802                 } else {
3803                         $table = "ttrss_cat_counters_cache";
3804                 }
3805
3806                 if (DB_TYPE == "pgsql") {
3807                         $date_qpart = "updated > NOW() - INTERVAL '15 minutes'";
3808                 } else if (DB_TYPE == "mysql") {
3809                         $date_qpart = "updated > DATE_SUB(NOW(), INTERVAL 15 MINUTE)";
3810                 }
3811
3812                 $result = db_query($link, "SELECT value FROM $table
3813                         WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id'
3814                         LIMIT 1");
3815
3816                 if (db_num_rows($result) == 1) {
3817                         return db_fetch_result($result, 0, "value");
3818                 } else {
3819                         if ($no_update) {
3820                                 return -1;
3821                         } else {
3822                                 return ccache_update($link, $feed_id, $owner_uid, $is_cat);
3823                         }
3824                 }
3825
3826         }
3827
3828         function ccache_update($link, $feed_id, $owner_uid, $is_cat = false,
3829                 $update_pcat = true) {
3830
3831                 if (!is_numeric($feed_id)) return;
3832
3833                 if (!$is_cat && $feed_id > 0) {
3834                         $tmp_result = db_query($link, "SELECT owner_uid FROM ttrss_feeds
3835                                 WHERE id = '$feed_id'");
3836                         $owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
3837                 }
3838
3839                 $prev_unread = ccache_find($link, $feed_id, $owner_uid, $is_cat, true);
3840
3841                 /* When updating a label, all we need to do is recalculate feed counters
3842                  * because labels are not cached */
3843
3844                 if ($feed_id < 0) {
3845                         ccache_update_all($link, $owner_uid);
3846                         return;
3847                 }
3848
3849                 if (!$is_cat) {
3850                         $table = "ttrss_counters_cache";
3851                 } else {
3852                         $table = "ttrss_cat_counters_cache";
3853                 }
3854
3855                 if ($is_cat && $feed_id >= 0) {
3856                         if ($feed_id != 0) {
3857                                 $cat_qpart = "cat_id = '$feed_id'";
3858                         } else {
3859                                 $cat_qpart = "cat_id IS NULL";
3860                         }
3861
3862                         /* Recalculate counters for child feeds */
3863
3864                         $result = db_query($link, "SELECT id FROM ttrss_feeds
3865                                                 WHERE owner_uid = '$owner_uid' AND $cat_qpart");
3866
3867                         while ($line = db_fetch_assoc($result)) {
3868                                 ccache_update($link, $line["id"], $owner_uid, false, false);
3869                         }
3870
3871                         $result = db_query($link, "SELECT SUM(value) AS sv
3872                                 FROM ttrss_counters_cache, ttrss_feeds
3873                                 WHERE id = feed_id AND $cat_qpart AND
3874                                 ttrss_feeds.owner_uid = '$owner_uid'");
3875
3876                         $unread = (int) db_fetch_result($result, 0, "sv");
3877
3878                 } else {
3879                         $unread = (int) getFeedArticles($link, $feed_id, $is_cat, true, $owner_uid);
3880                 }
3881
3882                 db_query($link, "BEGIN");
3883
3884                 $result = db_query($link, "SELECT feed_id FROM $table
3885                         WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id' LIMIT 1");
3886
3887                 if (db_num_rows($result) == 1) {
3888                         db_query($link, "UPDATE $table SET
3889                                 value = '$unread', updated = NOW() WHERE
3890                                 feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3891
3892                 } else {
3893                         db_query($link, "INSERT INTO $table
3894                                 (feed_id, value, owner_uid, updated)
3895                                 VALUES
3896                                 ($feed_id, $unread, $owner_uid, NOW())");
3897                 }
3898
3899                 db_query($link, "COMMIT");
3900
3901                 if ($feed_id > 0 && $prev_unread != $unread) {
3902
3903                         if (!$is_cat) {
3904
3905                                 /* Update parent category */
3906
3907                                 if ($update_pcat) {
3908
3909                                         $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
3910                                                 WHERE owner_uid = '$owner_uid' AND id = '$feed_id'");
3911
3912                                         $cat_id = (int) db_fetch_result($result, 0, "cat_id");
3913
3914                                         ccache_update($link, $cat_id, $owner_uid, true);
3915
3916                                 }
3917                         }
3918                 } else if ($feed_id < 0) {
3919                         ccache_update_all($link, $owner_uid);
3920                 }
3921
3922                 return $unread;
3923         }
3924
3925         /* function ccache_cleanup($link, $owner_uid) {
3926
3927                 if (DB_TYPE == "pgsql") {
3928                         db_query($link, "DELETE FROM ttrss_counters_cache AS c1 WHERE
3929                                 (SELECT count(*) FROM ttrss_counters_cache AS c2
3930                                         WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
3931                                         AND owner_uid = '$owner_uid'");
3932
3933                         db_query($link, "DELETE FROM ttrss_cat_counters_cache AS c1 WHERE
3934                                 (SELECT count(*) FROM ttrss_cat_counters_cache AS c2
3935                                         WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
3936                                         AND owner_uid = '$owner_uid'");
3937                 } else {
3938                         db_query($link, "DELETE c1 FROM
3939                                         ttrss_counters_cache AS c1,
3940                                         ttrss_counters_cache AS c2
3941                                 WHERE
3942                                         c1.owner_uid = '$owner_uid' AND
3943                                         c1.owner_uid = c2.owner_uid AND
3944                                         c1.feed_id = c2.feed_id");
3945
3946                         db_query($link, "DELETE c1 FROM
3947                                         ttrss_cat_counters_cache AS c1,
3948                                         ttrss_cat_counters_cache AS c2
3949                                 WHERE
3950                                         c1.owner_uid = '$owner_uid' AND
3951                                         c1.owner_uid = c2.owner_uid AND
3952                                         c1.feed_id = c2.feed_id");
3953
3954                 }
3955         } */
3956
3957         function label_find_id($link, $label, $owner_uid) {
3958                 $result = db_query($link,
3959                         "SELECT id FROM ttrss_labels2 WHERE caption = '$label'
3960                                 AND owner_uid = '$owner_uid' LIMIT 1");
3961
3962                 if (db_num_rows($result) == 1) {
3963                         return db_fetch_result($result, 0, "id");
3964                 } else {
3965                         return 0;
3966                 }
3967         }
3968
3969         function get_article_labels($link, $id) {
3970                 $rv = array();
3971
3972
3973                 $result = db_query($link, "SELECT label_cache FROM
3974                         ttrss_user_entries WHERE ref_id = '$id' AND owner_uid = " .
3975                         $_SESSION["uid"]);
3976
3977                 $label_cache = db_fetch_result($result, 0, "label_cache");
3978
3979                 if ($label_cache) {
3980
3981                         $label_cache = json_decode($label_cache, true);
3982
3983                         if ($label_cache["no-labels"] == 1)
3984                                 return $rv;
3985                         else
3986                                 return $label_cache;
3987                 }
3988
3989                 $result = db_query($link,
3990                         "SELECT DISTINCT label_id,caption,fg_color,bg_color
3991                                 FROM ttrss_labels2, ttrss_user_labels2
3992                         WHERE id = label_id
3993                                 AND article_id = '$id'
3994                                 AND owner_uid = ".$_SESSION["uid"] . "
3995                         ORDER BY caption");
3996
3997                 while ($line = db_fetch_assoc($result)) {
3998                         $rk = array($line["label_id"], $line["caption"], $line["fg_color"],
3999                                 $line["bg_color"]);
4000                         array_push($rv, $rk);
4001                 }
4002
4003                 if (count($rv) > 0)
4004                         label_update_cache($link, $id, $rv);
4005                 else
4006                         label_update_cache($link, $id, array("no-labels" => 1));
4007
4008                 return $rv;
4009         }
4010
4011
4012         function label_find_caption($link, $label, $owner_uid) {
4013                 $result = db_query($link,
4014                         "SELECT caption FROM ttrss_labels2 WHERE id = '$label'
4015                                 AND owner_uid = '$owner_uid' LIMIT 1");
4016
4017                 if (db_num_rows($result) == 1) {
4018                         return db_fetch_result($result, 0, "caption");
4019                 } else {
4020                         return "";
4021                 }
4022         }
4023
4024         function label_update_cache($link, $id, $labels = false, $force = false) {
4025
4026                 if ($force)
4027                         label_clear_cache($link, $id);
4028
4029                 if (!$labels)
4030                         $labels = get_article_labels($link, $id);
4031
4032                 $labels = db_escape_string(json_encode($labels));
4033
4034                 db_query($link, "UPDATE ttrss_user_entries SET
4035                         label_cache = '$labels' WHERE ref_id = '$id'");
4036
4037         }
4038
4039         function label_clear_cache($link, $id) {
4040
4041                 db_query($link, "UPDATE ttrss_user_entries SET
4042                         label_cache = '' WHERE ref_id = '$id'");
4043
4044         }
4045
4046         function label_remove_article($link, $id, $label, $owner_uid) {
4047
4048                 $label_id = label_find_id($link, $label, $owner_uid);
4049
4050                 if (!$label_id) return;
4051
4052                 $result = db_query($link,
4053                         "DELETE FROM ttrss_user_labels2
4054                         WHERE
4055                                 label_id = '$label_id' AND
4056                                 article_id = '$id'");
4057
4058                 label_clear_cache($link, $id);
4059         }
4060
4061         function label_add_article($link, $id, $label, $owner_uid) {
4062
4063                 $label_id = label_find_id($link, $label, $owner_uid);
4064
4065                 if (!$label_id) return;
4066
4067                 $result = db_query($link,
4068                         "SELECT
4069                                 article_id FROM ttrss_labels2, ttrss_user_labels2
4070                         WHERE
4071                                 label_id = id AND
4072                                 label_id = '$label_id' AND
4073                                 article_id = '$id' AND owner_uid = '$owner_uid'
4074                         LIMIT 1");
4075
4076                 if (db_num_rows($result) == 0) {
4077                         db_query($link, "INSERT INTO ttrss_user_labels2
4078                                 (label_id, article_id) VALUES ('$label_id', '$id')");
4079                 }
4080
4081                 label_clear_cache($link, $id);
4082
4083         }
4084
4085         function label_remove($link, $id, $owner_uid) {
4086                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4087
4088                 db_query($link, "BEGIN");
4089
4090                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
4091                         WHERE id = '$id'");
4092
4093                 $caption = db_fetch_result($result, 0, "caption");
4094
4095                 $result = db_query($link, "DELETE FROM ttrss_labels2 WHERE id = '$id'
4096                         AND owner_uid = " . $owner_uid);
4097
4098                 if (db_affected_rows($link, $result) != 0 && $caption) {
4099
4100                         /* Remove access key for the label */
4101
4102                         $ext_id = -11 - $id;
4103
4104                         db_query($link, "DELETE FROM ttrss_access_keys WHERE
4105                                 feed_id = '$ext_id' AND owner_uid = $owner_uid");
4106
4107                         /* Disable filters that reference label being removed */
4108
4109                         db_query($link, "UPDATE ttrss_filters SET
4110                                 enabled = false WHERE action_param = '$caption'
4111                                         AND action_id = 7
4112                                         AND owner_uid = " . $owner_uid);
4113
4114                         /* Remove cached data */
4115
4116                         db_query($link, "UPDATE ttrss_user_entries SET label_cache = ''
4117                                 WHERE label_cache LIKE '%$caption%' AND owner_uid = " . $owner_uid);
4118
4119                 }
4120
4121                 db_query($link, "COMMIT");
4122         }
4123
4124         function label_create($link, $caption, $fg_color = '', $bg_color = '', $owner_uid) {
4125
4126                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
4127
4128                 db_query($link, "BEGIN");
4129
4130                 $result = false;
4131
4132                 $result = db_query($link, "SELECT id FROM ttrss_labels2
4133                         WHERE caption = '$caption' AND owner_uid = $owner_uid");
4134
4135                 if (db_num_rows($result) == 0) {
4136                         $result = db_query($link,
4137                                 "INSERT INTO ttrss_labels2 (caption,owner_uid,fg_color,bg_color)
4138                                         VALUES ('$caption', '$owner_uid', '$fg_color', '$bg_color')");
4139
4140                         $result = db_affected_rows($link, $result) != 0;
4141                 }
4142
4143                 db_query($link, "COMMIT");
4144
4145                 return $result;
4146         }
4147
4148         function format_tags_string($tags, $id) {
4149
4150                 $tags_str = "";
4151                 $tags_nolinks_str = "";
4152
4153                 $num_tags = 0;
4154
4155                 $tag_limit = 6;
4156
4157                 $formatted_tags = array();
4158
4159                 foreach ($tags as $tag) {
4160                         $num_tags++;
4161                         $tag_escaped = str_replace("'", "\\'", $tag);
4162
4163                         if (mb_strlen($tag) > 30) {
4164                                 $tag = truncate_string($tag, 30);
4165                         }
4166
4167                         $tag_str = "<a href=\"javascript:viewfeed('$tag_escaped')\">$tag</a>";
4168
4169                         array_push($formatted_tags, $tag_str);
4170
4171                         $tmp_tags_str = implode(", ", $formatted_tags);
4172
4173                         if ($num_tags == $tag_limit || mb_strlen($tmp_tags_str) > 150) {
4174                                 break;
4175                         }
4176                 }
4177
4178                 $tags_str = implode(", ", $formatted_tags);
4179
4180                 if ($num_tags < count($tags)) {
4181                         $tags_str .= ", &hellip;";
4182                 }
4183
4184                 if ($num_tags == 0) {
4185                         $tags_str = __("no tags");
4186                 }
4187
4188                 return $tags_str;
4189
4190         }
4191
4192         function format_article_labels($labels, $id) {
4193
4194                 $labels_str = "";
4195
4196                 foreach ($labels as $l) {
4197                         $labels_str .= sprintf("<span class='hlLabelRef'
4198                                 style='color : %s; background-color : %s'>%s</span>",
4199                                         $l[2], $l[3], $l[1]);
4200                         }
4201
4202                 return $labels_str;
4203
4204         }
4205
4206         function format_article_note($id, $note) {
4207
4208                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
4209                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
4210                         __('(edit note)')."</div>$note</div>";
4211
4212                 return $str;
4213         }
4214
4215         function toggle_collapse_cat($link, $cat_id, $mode) {
4216                 if ($cat_id > 0) {
4217                         $mode = bool_to_sql_bool($mode);
4218
4219                         db_query($link, "UPDATE ttrss_feed_categories SET
4220                                 collapsed = $mode WHERE id = '$cat_id' AND owner_uid = " .
4221                                 $_SESSION["uid"]);
4222                 } else {
4223                         $pref_name = '';
4224
4225                         switch ($cat_id) {
4226                         case -1:
4227                                 $pref_name = '_COLLAPSED_SPECIAL';
4228                                 break;
4229                         case -2:
4230                                 $pref_name = '_COLLAPSED_LABELS';
4231                                 break;
4232                         case 0:
4233                                 $pref_name = '_COLLAPSED_UNCAT';
4234                                 break;
4235                         }
4236
4237                         if ($pref_name) {
4238                                 if ($mode) {
4239                                         set_pref($link, $pref_name, 'true');
4240                                 } else {
4241                                         set_pref($link, $pref_name, 'false');
4242                                 }
4243                         }
4244                 }
4245         }
4246
4247         function remove_feed($link, $id, $owner_uid) {
4248
4249                 if ($id > 0) {
4250
4251                         /* save starred articles in Archived feed */
4252
4253                         db_query($link, "BEGIN");
4254
4255                         /* prepare feed if necessary */
4256
4257                         $result = db_query($link, "SELECT id FROM ttrss_archived_feeds
4258                                 WHERE id = '$id'");
4259
4260                         if (db_num_rows($result) == 0) {
4261                                 db_query($link, "INSERT INTO ttrss_archived_feeds
4262                                         (id, owner_uid, title, feed_url, site_url)
4263                                 SELECT id, owner_uid, title, feed_url, site_url from ttrss_feeds
4264                                 WHERE id = '$id'");
4265                         }
4266
4267                         db_query($link, "UPDATE ttrss_user_entries SET feed_id = NULL,
4268                                 orig_feed_id = '$id' WHERE feed_id = '$id' AND
4269                                         marked = true AND owner_uid = $owner_uid");
4270
4271                         /* Remove access key for the feed */
4272
4273                         db_query($link, "DELETE FROM ttrss_access_keys WHERE
4274                                 feed_id = '$id' AND owner_uid = $owner_uid");
4275
4276                         /* remove the feed */
4277
4278                         db_query($link, "DELETE FROM ttrss_feeds
4279                                         WHERE id = '$id' AND owner_uid = $owner_uid");
4280
4281                         db_query($link, "COMMIT");
4282
4283                         if (file_exists(ICONS_DIR . "/$id.ico")) {
4284                                 unlink(ICONS_DIR . "/$id.ico");
4285                         }
4286
4287                         ccache_remove($link, $id, $owner_uid);
4288
4289                 } else {
4290                         label_remove($link, -11-$id, $owner_uid);
4291                         ccache_remove($link, -11-$id, $owner_uid);
4292                 }
4293         }
4294
4295         function get_feed_category($link, $feed_cat, $parent_cat_id = false) {
4296                 if ($parent_cat_id) {
4297                         $parent_qpart = "parent_cat = '$parent_cat_id'";
4298                         $parent_insert = "'$parent_cat_id'";
4299                 } else {
4300                         $parent_qpart = "parent_cat IS NULL";
4301                         $parent_insert = "NULL";
4302                 }
4303
4304                 $result = db_query($link,
4305                         "SELECT id FROM ttrss_feed_categories
4306                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
4307
4308                 if (db_num_rows($result) == 0) {
4309                         return false;
4310                 } else {
4311                         return db_fetch_result($result, 0, "id");
4312                 }
4313         }
4314
4315         function add_feed_category($link, $feed_cat, $parent_cat_id = false) {
4316
4317                 if (!$feed_cat) return false;
4318
4319                 db_query($link, "BEGIN");
4320
4321                 if ($parent_cat_id) {
4322                         $parent_qpart = "parent_cat = '$parent_cat_id'";
4323                         $parent_insert = "'$parent_cat_id'";
4324                 } else {
4325                         $parent_qpart = "parent_cat IS NULL";
4326                         $parent_insert = "NULL";
4327                 }
4328
4329                 $result = db_query($link,
4330                         "SELECT id FROM ttrss_feed_categories
4331                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
4332
4333                 if (db_num_rows($result) == 0) {
4334
4335                         $result = db_query($link,
4336                                 "INSERT INTO ttrss_feed_categories (owner_uid,title,parent_cat)
4337                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat', $parent_insert)");
4338
4339                         db_query($link, "COMMIT");
4340
4341                         return true;
4342                 }
4343
4344                 return false;
4345         }
4346
4347         function remove_feed_category($link, $id, $owner_uid) {
4348
4349                 db_query($link, "DELETE FROM ttrss_feed_categories
4350                         WHERE id = '$id' AND owner_uid = $owner_uid");
4351
4352                 ccache_remove($link, $id, $owner_uid, true);
4353         }
4354
4355         function archive_article($link, $id, $owner_uid) {
4356                 db_query($link, "BEGIN");
4357
4358                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
4359                         WHERE ref_id = '$id' AND owner_uid = $owner_uid");
4360
4361                 if (db_num_rows($result) != 0) {
4362
4363                         /* prepare the archived table */
4364
4365                         $feed_id = (int) db_fetch_result($result, 0, "feed_id");
4366
4367                         if ($feed_id) {
4368                                 $result = db_query($link, "SELECT id FROM ttrss_archived_feeds
4369                                         WHERE id = '$feed_id'");
4370
4371                                 if (db_num_rows($result) == 0) {
4372                                         db_query($link, "INSERT INTO ttrss_archived_feeds
4373                                                 (id, owner_uid, title, feed_url, site_url)
4374                                         SELECT id, owner_uid, title, feed_url, site_url from ttrss_feeds
4375                                         WHERE id = '$feed_id'");
4376                                 }
4377
4378                                 db_query($link, "UPDATE ttrss_user_entries
4379                                         SET orig_feed_id = feed_id, feed_id = NULL
4380                                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
4381                         }
4382                 }
4383
4384                 db_query($link, "COMMIT");
4385         }
4386
4387         function getArticleFeed($link, $id) {
4388                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
4389                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
4390
4391                 if (db_num_rows($result) != 0) {
4392                         return db_fetch_result($result, 0, "feed_id");
4393                 } else {
4394                         return 0;
4395                 }
4396         }
4397
4398         /**
4399          * Fixes incomplete URLs by prepending "http://".
4400          * Also replaces feed:// with http://, and
4401          * prepends a trailing slash if the url is a domain name only.
4402          *
4403          * @param string $url Possibly incomplete URL
4404          *
4405          * @return string Fixed URL.
4406          */
4407         function fix_url($url) {
4408                 if (strpos($url, '://') === false) {
4409                         $url = 'http://' . $url;
4410                 } else if (substr($url, 0, 5) == 'feed:') {
4411                         $url = 'http:' . substr($url, 5);
4412                 }
4413
4414                 //prepend slash if the URL has no slash in it
4415                 // "http://www.example" -> "http://www.example/"
4416                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
4417                         $url .= '/';
4418                 }
4419
4420                 if ($url != "http:///")
4421                         return $url;
4422                 else
4423                         return '';
4424         }
4425
4426         function validate_feed_url($url) {
4427                 $parts = parse_url($url);
4428
4429                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
4430
4431         }
4432
4433         function get_article_enclosures($link, $id) {
4434
4435                 $query = "SELECT * FROM ttrss_enclosures
4436                         WHERE post_id = '$id' AND content_url != ''";
4437
4438                 $rv = array();
4439
4440                 $result = db_query($link, $query);
4441
4442                 if (db_num_rows($result) > 0) {
4443                         while ($line = db_fetch_assoc($result)) {
4444                                 array_push($rv, $line);
4445                         }
4446                 }
4447
4448                 return $rv;
4449         }
4450
4451         function api_get_feeds($link, $cat_id, $unread_only, $limit, $offset) {
4452
4453                         $feeds = array();
4454
4455                         /* Labels */
4456
4457                         if ($cat_id == -4 || $cat_id == -2) {
4458                                 $counters = getLabelCounters($link, true);
4459
4460                                 foreach (array_values($counters) as $cv) {
4461
4462                                         $unread = $cv["counter"];
4463
4464                                         if ($unread || !$unread_only) {
4465
4466                                                 $row = array(
4467                                                                 "id" => $cv["id"],
4468                                                                 "title" => $cv["description"],
4469                                                                 "unread" => $cv["counter"],
4470                                                                 "cat_id" => -2,
4471                                                         );
4472
4473                                                 array_push($feeds, $row);
4474                                         }
4475                                 }
4476                         }
4477
4478                         /* Virtual feeds */
4479
4480                         if ($cat_id == -4 || $cat_id == -1) {
4481                                 foreach (array(-1, -2, -3, -4, 0) as $i) {
4482                                         $unread = getFeedUnread($link, $i);
4483
4484                                         if ($unread || !$unread_only) {
4485                                                 $title = getFeedTitle($link, $i);
4486
4487                                                 $row = array(
4488                                                                 "id" => $i,
4489                                                                 "title" => $title,
4490                                                                 "unread" => $unread,
4491                                                                 "cat_id" => -1,
4492                                                         );
4493                                                 array_push($feeds, $row);
4494                                         }
4495
4496                                 }
4497                         }
4498
4499                         /* Real feeds */
4500
4501                         if ($limit) {
4502                                 $limit_qpart = "LIMIT $limit OFFSET $offset";
4503                         } else {
4504                                 $limit_qpart = "";
4505                         }
4506
4507                         if ($cat_id == -4 || $cat_id == -3) {
4508                                 $result = db_query($link, "SELECT
4509                                         id, feed_url, cat_id, title, order_id, ".
4510                                                 SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
4511                                                 FROM ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"] .
4512                                                 " ORDER BY cat_id, title " . $limit_qpart);
4513                         } else {
4514
4515                                 if ($cat_id)
4516                                         $cat_qpart = "cat_id = '$cat_id'";
4517                                 else
4518                                         $cat_qpart = "cat_id IS NULL";
4519
4520                                 $result = db_query($link, "SELECT
4521                                         id, feed_url, cat_id, title, order_id, ".
4522                                                 SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
4523                                                 FROM ttrss_feeds WHERE
4524                                                 $cat_qpart AND owner_uid = " . $_SESSION["uid"] .
4525                                                 " ORDER BY cat_id, title " . $limit_qpart);
4526                         }
4527
4528                         while ($line = db_fetch_assoc($result)) {
4529
4530                                 $unread = getFeedUnread($link, $line["id"]);
4531
4532                                 $has_icon = feed_has_icon($line['id']);
4533
4534                                 if ($unread || !$unread_only) {
4535
4536                                         $row = array(
4537                                                         "feed_url" => $line["feed_url"],
4538                                                         "title" => $line["title"],
4539                                                         "id" => (int)$line["id"],
4540                                                         "unread" => (int)$unread,
4541                                                         "has_icon" => $has_icon,
4542                                                         "cat_id" => (int)$line["cat_id"],
4543                                                         "last_updated" => strtotime($line["last_updated"]),
4544                                                         "order_id" => (int) $line["order_id"],
4545                                                 );
4546
4547                                         array_push($feeds, $row);
4548                                 }
4549                         }
4550
4551                 return $feeds;
4552         }
4553
4554         function api_get_headlines($link, $feed_id, $limit, $offset,
4555                                 $filter, $is_cat, $show_excerpt, $show_content, $view_mode, $order,
4556                                 $include_attachments, $since_id,
4557                                 $search = "", $search_mode = "", $match_on = "") {
4558
4559                         $qfh_ret = queryFeedHeadlines($link, $feed_id, $limit,
4560                                 $view_mode, $is_cat, $search, $search_mode, $match_on,
4561                                 $order, $offset, 0, false, $since_id);
4562
4563                         $result = $qfh_ret[0];
4564                         $feed_title = $qfh_ret[1];
4565
4566                         $headlines = array();
4567
4568                         while ($line = db_fetch_assoc($result)) {
4569                                 $is_updated = ($line["last_read"] == "" &&
4570                                         ($line["unread"] != "t" && $line["unread"] != "1"));
4571
4572                                 $tags = explode(",", $line["tag_cache"]);
4573                                 $labels = json_decode($line["label_cache"], true);
4574
4575                                 //if (!$tags) $tags = get_article_tags($link, $line["id"]);
4576                                 //if (!$labels) $labels = get_article_labels($link, $line["id"]);
4577
4578                                 $headline_row = array(
4579                                                 "id" => (int)$line["id"],
4580                                                 "unread" => sql_bool_to_bool($line["unread"]),
4581                                                 "marked" => sql_bool_to_bool($line["marked"]),
4582                                                 "published" => sql_bool_to_bool($line["published"]),
4583                                                 "updated" => strtotime($line["updated"]),
4584                                                 "is_updated" => $is_updated,
4585                                                 "title" => $line["title"],
4586                                                 "link" => $line["link"],
4587                                                 "feed_id" => $line["feed_id"],
4588                                                 "tags" => $tags,
4589                                         );
4590
4591                                         if ($include_attachments)
4592                                                 $headline_row['attachments'] = get_article_enclosures($link,
4593                                                         $line['id']);
4594
4595                                 if ($show_excerpt) {
4596                                         $excerpt = truncate_string(strip_tags($line["content_preview"]), 100);
4597                                         $headline_row["excerpt"] = $excerpt;
4598                                 }
4599
4600                                 if ($show_content) {
4601                                         $headline_row["content"] = $line["content_preview"];
4602                                 }
4603
4604                                 // unify label output to ease parsing
4605                                 if ($labels["no-labels"] == 1) $labels = array();
4606
4607                                 $headline_row["labels"] = $labels;
4608
4609                                 $headline_row["feed_title"] = $line["feed_title"];
4610
4611                                 array_push($headlines, $headline_row);
4612                         }
4613
4614                         return $headlines;
4615         }
4616
4617         function generate_error_feed($link, $error) {
4618                 $reply = array();
4619
4620                 $reply['headlines']['id'] = -6;
4621                 $reply['headlines']['is_cat'] = false;
4622
4623                 $reply['headlines']['toolbar'] = '';
4624                 $reply['headlines']['content'] = "<div class='whiteBox'>". $error . "</div>";
4625
4626                 $reply['headlines-info'] = array("count" => 0,
4627                         "vgroup_last_feed" => '',
4628                         "unread" => 0,
4629                         "disable_cache" => true);
4630
4631                 return $reply;
4632         }
4633
4634
4635         function generate_dashboard_feed($link) {
4636                 $reply = array();
4637
4638                 $reply['headlines']['id'] = -5;
4639                 $reply['headlines']['is_cat'] = false;
4640
4641                 $reply['headlines']['toolbar'] = '';
4642                 $reply['headlines']['content'] = "<div class='whiteBox'>".__('No feed selected.');
4643
4644                 $reply['headlines']['content'] .= "<p class=\"small\"><span class=\"insensitive\">";
4645
4646                 $result = db_query($link, "SELECT ".SUBSTRING_FOR_DATE."(MAX(last_updated), 1, 19) AS last_updated FROM ttrss_feeds
4647                         WHERE owner_uid = " . $_SESSION['uid']);
4648
4649                 $last_updated = db_fetch_result($result, 0, "last_updated");
4650                 $last_updated = make_local_datetime($link, $last_updated, false);
4651
4652                 $reply['headlines']['content'] .= sprintf(__("Feeds last updated at %s"), $last_updated);
4653
4654                 $result = db_query($link, "SELECT COUNT(id) AS num_errors
4655                         FROM ttrss_feeds WHERE last_error != '' AND owner_uid = ".$_SESSION["uid"]);
4656
4657                 $num_errors = db_fetch_result($result, 0, "num_errors");
4658
4659                 if ($num_errors > 0) {
4660                         $reply['headlines']['content'] .= "<br/>";
4661                         $reply['headlines']['content'] .= "<a class=\"insensitive\" href=\"#\" onclick=\"showFeedsWithErrors()\">".
4662                                 __('Some feeds have update errors (click for details)')."</a>";
4663                 }
4664                 $reply['headlines']['content'] .= "</span></p>";
4665
4666                 $reply['headlines-info'] = array("count" => 0,
4667                         "vgroup_last_feed" => '',
4668                         "unread" => 0,
4669                         "disable_cache" => true);
4670
4671                 return $reply;
4672         }
4673
4674         function save_email_address($link, $email) {
4675                 // FIXME: implement persistent storage of emails
4676
4677                 if (!$_SESSION['stored_emails'])
4678                         $_SESSION['stored_emails'] = array();
4679
4680                 if (!in_array($email, $_SESSION['stored_emails']))
4681                         array_push($_SESSION['stored_emails'], $email);
4682         }
4683
4684         function update_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
4685                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4686
4687                 $sql_is_cat = bool_to_sql_bool($is_cat);
4688
4689                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
4690                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
4691                         AND owner_uid = " . $owner_uid);
4692
4693                 if (db_num_rows($result) == 1) {
4694                         $key = db_escape_string(sha1(uniqid(rand(), true)));
4695
4696                         db_query($link, "UPDATE ttrss_access_keys SET access_key = '$key'
4697                                 WHERE feed_id = '$feed_id' AND is_cat = $sql_is_cat
4698                                 AND owner_uid = " . $owner_uid);
4699
4700                         return $key;
4701
4702                 } else {
4703                         return get_feed_access_key($link, $feed_id, $is_cat, $owner_uid);
4704                 }
4705         }
4706
4707         function get_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
4708
4709                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4710
4711                 $sql_is_cat = bool_to_sql_bool($is_cat);
4712
4713                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
4714                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
4715                         AND owner_uid = " . $owner_uid);
4716
4717                 if (db_num_rows($result) == 1) {
4718                         return db_fetch_result($result, 0, "access_key");
4719                 } else {
4720                         $key = db_escape_string(sha1(uniqid(rand(), true)));
4721
4722                         $result = db_query($link, "INSERT INTO ttrss_access_keys
4723                                 (access_key, feed_id, is_cat, owner_uid)
4724                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
4725
4726                         return $key;
4727                 }
4728                 return false;
4729         }
4730
4731         /**
4732          * Extracts RSS/Atom feed URLs from the given HTML URL.
4733          *
4734          * @param string $url HTML page URL
4735          *
4736          * @return array Array of feeds. Key is the full URL, value the title
4737          */
4738         function get_feeds_from_html($url, $login = false, $pass = false)
4739         {
4740                 $url     = fix_url($url);
4741                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
4742
4743                 libxml_use_internal_errors(true);
4744
4745                 $content = @fetch_file_contents($url, false, $login, $pass);
4746
4747                 $doc = new DOMDocument();
4748                 $doc->loadHTML($content);
4749                 $xpath = new DOMXPath($doc);
4750                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
4751                 $feedUrls = array();
4752                 foreach ($entries as $entry) {
4753                         if ($entry->hasAttribute('href')) {
4754                                 $title = $entry->getAttribute('title');
4755                                 if ($title == '') {
4756                                         $title = $entry->getAttribute('type');
4757                                 }
4758                                 $feedUrl = rewrite_relative_url(
4759                                         $baseUrl, $entry->getAttribute('href')
4760                                 );
4761                                 $feedUrls[$feedUrl] = $title;
4762                         }
4763                 }
4764                 return $feedUrls;
4765         }
4766
4767         /**
4768          * Checks if the content behind the given URL is a HTML file
4769          *
4770          * @param string $url URL to check
4771          *
4772          * @return boolean True if the URL contains HTML content
4773          */
4774         function url_is_html($url, $login = false, $pass = false) {
4775                 $content = substr(fetch_file_contents($url, false, $login, $pass), 0, 1000);
4776
4777                 if (stripos($content, '<html>') === false
4778                         && stripos($content, '<html ') === false
4779                 ) {
4780                         return false;
4781                 }
4782
4783                 return true;
4784         }
4785
4786         function print_label_select($link, $name, $value, $attributes = "") {
4787
4788                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
4789                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
4790
4791                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
4792                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
4793
4794                 while ($line = db_fetch_assoc($result)) {
4795
4796                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
4797
4798                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
4799                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
4800
4801                 }
4802
4803 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
4804
4805                 print "</select>";
4806
4807
4808         }
4809
4810         function format_article_enclosures($link, $id, $always_display_enclosures,
4811                                         $article_content) {
4812
4813                 $result = get_article_enclosures($link, $id);
4814                 $rv = '';
4815
4816                 if (count($result) > 0) {
4817
4818                         $entries_html = array();
4819                         $entries = array();
4820
4821                         foreach ($result as $line) {
4822
4823                                 $url = $line["content_url"];
4824                                 $ctype = $line["content_type"];
4825
4826                                 if (!$ctype) $ctype = __("unknown type");
4827
4828                                 $filename = substr($url, strrpos($url, "/")+1);
4829
4830 #                               $player = format_inline_player($link, $url, $ctype);
4831
4832 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
4833 #                                       $filename . " (" . $ctype . ")" . "</a>";
4834
4835                                 $entry = "<div onclick=\"window.open('".htmlspecialchars($url)."')\"
4836                                         dojoType=\"dijit.MenuItem\">$filename ($ctype)</div>";
4837
4838                                 array_push($entries_html, $entry);
4839
4840                                 $entry = array();
4841
4842                                 $entry["type"] = $ctype;
4843                                 $entry["filename"] = $filename;
4844                                 $entry["url"] = $url;
4845
4846                                 array_push($entries, $entry);
4847                         }
4848
4849                         if (!get_pref($link, "STRIP_IMAGES")) {
4850                                 if ($always_display_enclosures ||
4851                                                         !preg_match("/<img/i", $article_content)) {
4852
4853                                         foreach ($entries as $entry) {
4854
4855                                                 if (preg_match("/image/", $entry["type"]) ||
4856                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
4857
4858                                                                 $rv .= "<p><img
4859                                                                 alt=\"".htmlspecialchars($entry["filename"])."\"
4860                                                                 src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
4861
4862                                                 }
4863                                         }
4864                                 }
4865                         }
4866
4867                         $rv .= "<div dojoType=\"dijit.form.DropDownButton\">".
4868                                 "<span>" . __('Attachments')."</span>";
4869                         $rv .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
4870
4871                         foreach ($entries_html as $entry) { $rv .= $entry; };
4872
4873                         $rv .= "</div></div>";
4874                 }
4875
4876                 return $rv;
4877         }
4878
4879         function getLastArticleId($link) {
4880                 $result = db_query($link, "SELECT MAX(ref_id) AS id FROM ttrss_user_entries
4881                         WHERE owner_uid = " . $_SESSION["uid"]);
4882
4883                 if (db_num_rows($result) == 1) {
4884                         return db_fetch_result($result, 0, "id");
4885                 } else {
4886                         return -1;
4887                 }
4888         }
4889
4890         function build_url($parts) {
4891                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
4892         }
4893
4894         /**
4895          * Converts a (possibly) relative URL to a absolute one.
4896          *
4897          * @param string $url     Base URL (i.e. from where the document is)
4898          * @param string $rel_url Possibly relative URL in the document
4899          *
4900          * @return string Absolute URL
4901          */
4902         function rewrite_relative_url($url, $rel_url) {
4903                 if (strpos($rel_url, "magnet:") === 0) {
4904                         return $rel_url;
4905                 } else if (strpos($rel_url, "://") !== false) {
4906                         return $rel_url;
4907                 } else if (strpos($rel_url, "//") === 0) {
4908                         # protocol-relative URL (rare but they exist)
4909                         return $rel_url;
4910                 } else if (strpos($rel_url, "/") === 0)
4911                 {
4912                         $parts = parse_url($url);
4913                         $parts['path'] = $rel_url;
4914
4915                         return build_url($parts);
4916
4917                 } else {
4918                         $parts = parse_url($url);
4919                         if (!isset($parts['path'])) {
4920                                 $parts['path'] = '/';
4921                         }
4922                         $dir = $parts['path'];
4923                         if (substr($dir, -1) !== '/') {
4924                                 $dir = dirname($parts['path']);
4925                                 $dir !== '/' && $dir .= '/';
4926                         }
4927                         $parts['path'] = $dir . $rel_url;
4928
4929                         return build_url($parts);
4930                 }
4931         }
4932
4933         function sphinx_search($query, $offset = 0, $limit = 30) {
4934                 require_once 'lib/sphinxapi.php';
4935
4936                 $sphinxClient = new SphinxClient();
4937
4938                 $sphinxClient->SetServer('localhost', 9312);
4939                 $sphinxClient->SetConnectTimeout(1);
4940
4941                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
4942                         'feed_title' => 20));
4943
4944                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
4945                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
4946                 $sphinxClient->SetLimits($offset, $limit, 1000);
4947                 $sphinxClient->SetArrayResult(false);
4948                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
4949
4950                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
4951
4952                 $ids = array();
4953
4954                 if (is_array($result['matches'])) {
4955                         foreach (array_keys($result['matches']) as $int_id) {
4956                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
4957                                 array_push($ids, $ref_id);
4958                         }
4959                 }
4960
4961                 return $ids;
4962         }
4963
4964         function cleanup_tags($link, $days = 14, $limit = 1000) {
4965
4966                 if (DB_TYPE == "pgsql") {
4967                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
4968                 } else if (DB_TYPE == "mysql") {
4969                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
4970                 }
4971
4972                 $tags_deleted = 0;
4973
4974                 while ($limit > 0) {
4975                         $limit_part = 500;
4976
4977                         $query = "SELECT ttrss_tags.id AS id
4978                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
4979                                 WHERE post_int_id = int_id AND $interval_query AND
4980                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
4981
4982                         $result = db_query($link, $query);
4983
4984                         $ids = array();
4985
4986                         while ($line = db_fetch_assoc($result)) {
4987                                 array_push($ids, $line['id']);
4988                         }
4989
4990                         if (count($ids) > 0) {
4991                                 $ids = join(",", $ids);
4992                                 print ".";
4993
4994                                 $tmp_result = db_query($link, "DELETE FROM ttrss_tags WHERE id IN ($ids)");
4995                                 $tags_deleted += db_affected_rows($link, $tmp_result);
4996                         } else {
4997                                 break;
4998                         }
4999
5000                         $limit -= $limit_part;
5001                 }
5002
5003                 print "\n";
5004
5005                 return $tags_deleted;
5006         }
5007
5008         function print_user_stylesheet($link) {
5009                 $value = get_pref($link, 'USER_STYLESHEET');
5010
5011                 if ($value) {
5012                         print "<style type=\"text/css\">";
5013                         print str_replace("<br/>", "\n", $value);
5014                         print "</style>";
5015                 }
5016
5017         }
5018
5019 /*      function rewrite_urls($line) {
5020                 global $url_regex;
5021
5022                 $urls = null;
5023
5024                 $result = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
5025                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $line);
5026
5027                 return $result;
5028         } */
5029
5030         function rewrite_urls($html) {
5031                 libxml_use_internal_errors(true);
5032
5033                 $charset_hack = '<head>
5034                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
5035                 </head>';
5036
5037                 $doc = new DOMDocument();
5038                 $doc->loadHTML($charset_hack . $html);
5039                 $xpath = new DOMXPath($doc);
5040
5041                 $entries = $xpath->query('//*/text()');
5042
5043                 foreach ($entries as $entry) {
5044                         if (strstr($entry->wholeText, "://") !== false) {
5045                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
5046                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
5047
5048                                 if ($text != $entry->wholeText) {
5049                                         $cdoc = new DOMDocument();
5050                                         $cdoc->loadHTML($charset_hack . $text);
5051
5052
5053                                         foreach ($cdoc->childNodes as $cnode) {
5054                                                 $cnode = $doc->importNode($cnode, true);
5055
5056                                                 if ($cnode) {
5057                                                         $entry->parentNode->insertBefore($cnode);
5058                                                 }
5059                                         }
5060
5061                                         $entry->parentNode->removeChild($entry);
5062
5063                                 }
5064                         }
5065                 }
5066
5067                 $node = $doc->getElementsByTagName('body')->item(0);
5068
5069                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
5070                 if ($node)
5071                         return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
5072                 else
5073                         return $html;
5074         }
5075
5076         function filter_to_sql($filter) {
5077                 $query = "";
5078
5079                 $regexp_valid = preg_match('/' . $filter['reg_exp'] . '/',
5080                         $filter['reg_exp']) !== FALSE;
5081
5082                 if ($regexp_valid) {
5083
5084                         if (DB_TYPE == "pgsql")
5085                                 $reg_qpart = "~";
5086                         else
5087                                 $reg_qpart = "REGEXP";
5088
5089                         switch ($filter["type"]) {
5090                                 case "title":
5091                                         $query = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
5092                                                 $filter['reg_exp'] . "')";
5093                                         break;
5094                                 case "content":
5095                                         $query = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
5096                                                 $filter['reg_exp'] . "')";
5097                                         break;
5098                                 case "both":
5099                                         $query = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
5100                                                 $filter['reg_exp'] . "') OR LOWER(" .
5101                                                 "ttrss_entries.content) $reg_qpart LOWER('" . $filter['reg_exp'] . "')";
5102                                         break;
5103                                 case "tag":
5104                                         $query = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
5105                                                 $filter['reg_exp'] . "')";
5106                                         break;
5107                                 case "link":
5108                                         $query = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
5109                                                 $filter['reg_exp'] . "')";
5110                                         break;
5111                                 case "date":
5112
5113                                         if ($filter["filter_param"] == "before")
5114                                                 $cmp_qpart = "<";
5115                                         else
5116                                                 $cmp_qpart = ">=";
5117
5118                                         $timestamp = date("Y-m-d H:N:s", strtotime($filter["reg_exp"]));
5119                                         $query = "ttrss_entries.date_entered $cmp_qpart '$timestamp'";
5120                                         break;
5121                                 case "author":
5122                                         $query = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
5123                                                 $filter['reg_exp'] . "')";
5124                                         break;
5125                         }
5126
5127                         if ($filter["inverse"])
5128                                 $query = "NOT ($query)";
5129
5130                         if ($query) {
5131                                 if (DB_TYPE == "pgsql") {
5132                                         $query = " ($query) AND ttrss_entries.date_entered > NOW() - INTERVAL '14 days'";
5133                                 } else {
5134                                         $query = " ($query) AND ttrss_entries.date_entered > DATE_SUB(NOW(), INTERVAL 14 DAY)";
5135                                 }
5136                                 $query .= " AND ";
5137                         }
5138
5139                         return $query;
5140                 } else {
5141                         return false;
5142                 }
5143         }
5144
5145         // Status codes:
5146         // -1  - never connected
5147         // 0   - no data received
5148         // 1   - data received successfully
5149         // 2   - did not receive valid data
5150         // >10 - server error, code + 10 (e.g. 16 means server error 6)
5151
5152         function get_linked_feeds($link, $instance_id = false) {
5153                 if ($instance_id)
5154                         $instance_qpart = "id = '$instance_id' AND ";
5155                 else
5156                         $instance_qpart = "";
5157
5158                 if (DB_TYPE == "pgsql") {
5159                         $date_qpart = "last_connected < NOW() - INTERVAL '6 hours'";
5160                 } else {
5161                         $date_qpart = "last_connected < DATE_SUB(NOW(), INTERVAL 6 HOUR)";
5162                 }
5163
5164                 $result = db_query($link, "SELECT id, access_key, access_url FROM ttrss_linked_instances
5165                         WHERE $instance_qpart $date_qpart ORDER BY last_connected");
5166
5167                 while ($line = db_fetch_assoc($result)) {
5168                         $id = $line['id'];
5169
5170                         _debug("Updating: " . $line['access_url'] . " ($id)");
5171
5172                         $fetch_url = $line['access_url'] . '/public.php?op=fbexport';
5173                         $post_query = 'key=' . $line['access_key'];
5174
5175                         $feeds = fetch_file_contents($fetch_url, false, false, false, $post_query);
5176
5177                         // try doing it the old way
5178                         if (!$feeds) {
5179                                 $fetch_url = $line['access_url'] . '/backend.php?op=fbexport';
5180                                 $feeds = fetch_file_contents($fetch_url, false, false, false, $post_query);
5181                         }
5182
5183                         if ($feeds) {
5184                                 $feeds = json_decode($feeds, true);
5185
5186                                 if ($feeds) {
5187                                         if ($feeds['error']) {
5188                                                 $status = $feeds['error']['code'] + 10;
5189                                         } else {
5190                                                 $status = 1;
5191
5192                                                 if (count($feeds['feeds']) > 0) {
5193
5194                                                         db_query($link, "DELETE FROM ttrss_linked_feeds
5195                                                                 WHERE instance_id = '$id'");
5196
5197                                                         foreach ($feeds['feeds'] as $feed) {
5198                                                                 $feed_url = db_escape_string($feed['feed_url']);
5199                                                                 $title = db_escape_string($feed['title']);
5200                                                                 $subscribers = db_escape_string($feed['subscribers']);
5201                                                                 $site_url = db_escape_string($feed['site_url']);
5202
5203                                                                 db_query($link, "INSERT INTO ttrss_linked_feeds
5204                                                                         (feed_url, site_url, title, subscribers, instance_id, created, updated)
5205                                                                 VALUES
5206                                                                         ('$feed_url', '$site_url', '$title', '$subscribers', '$id', NOW(), NOW())");
5207                                                         }
5208                                                 } else {
5209                                                         // received 0 feeds, this might indicate that
5210                                                         // the instance on the other hand is rebuilding feedbrowser cache
5211                                                         // we will try again later
5212
5213                                                         // TODO: maybe perform expiration based on updated here?
5214                                                 }
5215
5216                                                 _debug("Processed " . count($feeds['feeds']) . " feeds.");
5217                                         }
5218                                 } else {
5219                                         $status = 2;
5220                                 }
5221
5222                         } else {
5223                                 $status = 0;
5224                         }
5225
5226                         _debug("Status: $status");
5227
5228                         db_query($link, "UPDATE ttrss_linked_instances SET
5229                                 last_status_out = '$status', last_connected = NOW() WHERE id = '$id'");
5230
5231                 }
5232         }
5233
5234         function make_feed_browser($link, $search, $limit, $mode = 1) {
5235
5236                 $owner_uid = $_SESSION["uid"];
5237                 $rv = '';
5238
5239                 if ($search) {
5240                         $search_qpart = "AND (UPPER(feed_url) LIKE UPPER('%$search%') OR
5241                                                 UPPER(title) LIKE UPPER('%$search%'))";
5242                 } else {
5243                         $search_qpart = "";
5244                 }
5245
5246                 if ($mode == 1) {
5247                         /* $result = db_query($link, "SELECT feed_url, subscribers FROM
5248                          ttrss_feedbrowser_cache WHERE (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
5249                         WHERE tf.feed_url = ttrss_feedbrowser_cache.feed_url
5250                         AND owner_uid = '$owner_uid') $search_qpart
5251                         ORDER BY subscribers DESC LIMIT $limit"); */
5252
5253                         $result = db_query($link, "SELECT feed_url, site_url, title, SUM(subscribers) AS subscribers FROM
5254                                                 (SELECT feed_url, site_url, title, subscribers FROM ttrss_feedbrowser_cache UNION ALL
5255                                                         SELECT feed_url, site_url, title, subscribers FROM ttrss_linked_feeds) AS qqq
5256                                                 WHERE
5257                                                         (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
5258                                                                 WHERE tf.feed_url = qqq.feed_url
5259                                                                         AND owner_uid = '$owner_uid') $search_qpart
5260                                                 GROUP BY feed_url, site_url, title ORDER BY subscribers DESC LIMIT $limit");
5261
5262                 } else if ($mode == 2) {
5263                         $result = db_query($link, "SELECT *,
5264                                                 (SELECT COUNT(*) FROM ttrss_user_entries WHERE
5265                                                         orig_feed_id = ttrss_archived_feeds.id) AS articles_archived
5266                                                 FROM
5267                                                         ttrss_archived_feeds
5268                                                 WHERE
5269                                                 (SELECT COUNT(*) FROM ttrss_feeds
5270                                                         WHERE ttrss_feeds.feed_url = ttrss_archived_feeds.feed_url AND
5271                                                                 owner_uid = '$owner_uid') = 0   AND
5272                                                 owner_uid = '$owner_uid' $search_qpart
5273                                                 ORDER BY id DESC LIMIT $limit");
5274                 }
5275
5276                 $feedctr = 0;
5277
5278                 while ($line = db_fetch_assoc($result)) {
5279
5280                         if ($mode == 1) {
5281
5282                                 $feed_url = htmlspecialchars($line["feed_url"]);
5283                                 $site_url = htmlspecialchars($line["site_url"]);
5284                                 $subscribers = $line["subscribers"];
5285
5286                                 $check_box = "<input onclick='toggleSelectListRow2(this)'
5287                                                         dojoType=\"dijit.form.CheckBox\"
5288                                                         type=\"checkbox\" \">";
5289
5290                                 $class = ($feedctr % 2) ? "even" : "odd";
5291
5292                                 $site_url = "<a target=\"_blank\"
5293                                                         href=\"$site_url\">
5294                                                         <span class=\"fb_feedTitle\">".
5295                                 htmlspecialchars($line["title"])."</span></a>";
5296
5297                                 $feed_url = "<a target=\"_blank\" class=\"fb_feedUrl\"
5298                                                         href=\"$feed_url\"><img src='images/feed-icon-12x12.png'
5299                                                         style='vertical-align : middle'></a>";
5300
5301                                 $rv .= "<li>$check_box $feed_url $site_url".
5302                                                         "&nbsp;<span class='subscribers'>($subscribers)</span></li>";
5303
5304                         } else if ($mode == 2) {
5305                                 $feed_url = htmlspecialchars($line["feed_url"]);
5306                                 $site_url = htmlspecialchars($line["site_url"]);
5307                                 $title = htmlspecialchars($line["title"]);
5308
5309                                 $check_box = "<input onclick='toggleSelectListRow2(this)' dojoType=\"dijit.form.CheckBox\"
5310                                                         type=\"checkbox\">";
5311
5312                                 $class = ($feedctr % 2) ? "even" : "odd";
5313
5314                                 if ($line['articles_archived'] > 0) {
5315                                         $archived = sprintf(__("%d archived articles"), $line['articles_archived']);
5316                                         $archived = "&nbsp;<span class='subscribers'>($archived)</span>";
5317                                 } else {
5318                                         $archived = '';
5319                                 }
5320
5321                                 $site_url = "<a target=\"_blank\"
5322                                                         href=\"$site_url\">
5323                                                         <span class=\"fb_feedTitle\">".
5324                                 htmlspecialchars($line["title"])."</span></a>";
5325
5326                                 $feed_url = "<a target=\"_blank\" class=\"fb_feedUrl\"
5327                                                         href=\"$feed_url\"><img src='images/feed-icon-12x12.png'
5328                                                         style='vertical-align : middle'></a>";
5329
5330
5331                                 $rv .= "<li id=\"FBROW-".$line["id"]."\">".
5332                                                         "$check_box $feed_url $site_url $archived</li>";
5333                         }
5334
5335                         ++$feedctr;
5336                 }
5337
5338                 if ($feedctr == 0) {
5339                         $rv .= "<li style=\"text-align : center\"><p>".__('No feeds found.')."</p></li>";
5340                 }
5341
5342                 return $rv;
5343         }
5344
5345         if (!function_exists('gzdecode')) {
5346                 function gzdecode($string) { // no support for 2nd argument
5347                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
5348                                 base64_encode($string));
5349                 }
5350         }
5351
5352         function perform_data_import($link, $filename, $owner_uid) {
5353
5354                 $num_imported = 0;
5355                 $num_processed = 0;
5356                 $num_feeds_created = 0;
5357
5358                 $doc = @DOMDocument::load($filename);
5359
5360                 if (!$doc) {
5361                         $contents = file_get_contents($filename);
5362
5363                         if ($contents) {
5364                                 $data = @gzuncompress($contents);
5365                         }
5366
5367                         if (!$data) {
5368                                 $data = @gzdecode($contents);
5369                         }
5370
5371                         if ($data)
5372                                 $doc = DOMDocument::loadXML($data);
5373                 }
5374
5375                 if ($doc) {
5376
5377                         $xpath = new DOMXpath($doc);
5378
5379                         $container = $doc->firstChild;
5380
5381                         if ($container && $container->hasAttribute('schema-version')) {
5382                                 $schema_version = $container->getAttribute('schema-version');
5383
5384                                 if ($schema_version != SCHEMA_VERSION) {
5385                                         print "<p>" .__("Could not import: incorrect schema version.") . "</p>";
5386                                         return;
5387                                 }
5388
5389                         } else {
5390                                 print "<p>" . __("Could not import: unrecognized document format.") . "</p>";
5391                                 return;
5392                         }
5393
5394                         $articles = $xpath->query("//article");
5395
5396                         foreach ($articles as $article_node) {
5397                                 if ($article_node->childNodes) {
5398
5399                                         $ref_id = 0;
5400
5401                                         $article = array();
5402
5403                                         foreach ($article_node->childNodes as $child) {
5404                                                 if ($child->nodeName != 'label_cache')
5405                                                         $article[$child->nodeName] = db_escape_string($child->nodeValue);
5406                                                 else
5407                                                         $article[$child->nodeName] = $child->nodeValue;
5408                                         }
5409
5410                                         //print_r($article);
5411
5412                                         if ($article['guid']) {
5413
5414                                                 ++$num_processed;
5415
5416                                                 //db_query($link, "BEGIN");
5417
5418                                                 //print 'GUID:' . $article['guid'] . "\n";
5419
5420                                                 $result = db_query($link, "SELECT id FROM ttrss_entries
5421                                                         WHERE guid = '".$article['guid']."'");
5422
5423                                                 if (db_num_rows($result) == 0) {
5424
5425                                                         $result = db_query($link,
5426                                                                 "INSERT INTO ttrss_entries
5427                                                                         (title,
5428                                                                         guid,
5429                                                                         link,
5430                                                                         updated,
5431                                                                         content,
5432                                                                         content_hash,
5433                                                                         no_orig_date,
5434                                                                         date_updated,
5435                                                                         date_entered,
5436                                                                         comments,
5437                                                                         num_comments,
5438                                                                         author)
5439                                                                 VALUES
5440                                                                         ('".$article['title']."',
5441                                                                         '".$article['guid']."',
5442                                                                         '".$article['link']."',
5443                                                                         '".$article['updated']."',
5444                                                                         '".$article['content']."',
5445                                                                         '".sha1($article['content'])."',
5446                                                                         false,
5447                                                                         NOW(),
5448                                                                         NOW(),
5449                                                                         '',
5450                                                                         '0',
5451                                                                         '')");
5452
5453                                                         $result = db_query($link, "SELECT id FROM ttrss_entries
5454                                                                 WHERE guid = '".$article['guid']."'");
5455
5456                                                         if (db_num_rows($result) != 0) {
5457                                                                 $ref_id = db_fetch_result($result, 0, "id");
5458                                                         }
5459
5460                                                 } else {
5461                                                         $ref_id = db_fetch_result($result, 0, "id");
5462                                                 }
5463
5464                                                 //print "Got ref ID: $ref_id\n";
5465
5466                                                 if ($ref_id) {
5467
5468                                                         $feed_url = $article['feed_url'];
5469                                                         $feed_title = $article['feed_title'];
5470
5471                                                         $feed = 'NULL';
5472
5473                                                         if ($feed_url && $feed_title) {
5474                                                                 $result = db_query($link, "SELECT id FROM ttrss_feeds
5475                                                                         WHERE feed_url = '$feed_url' AND owner_uid = '$owner_uid'");
5476
5477                                                                 if (db_num_rows($result) != 0) {
5478                                                                         $feed = db_fetch_result($result, 0, "id");
5479                                                                 } else {
5480                                                                         // try autocreating feed in Uncategorized...
5481
5482                                                                         $result = db_query($link, "INSERT INTO ttrss_feeds (owner_uid,
5483                                                                                 feed_url, title) VALUES ($owner_uid, '$feed_url', '$feed_title')");
5484
5485                                                                         $result = db_query($link, "SELECT id FROM ttrss_feeds
5486                                                                                 WHERE feed_url = '$feed_url' AND owner_uid = '$owner_uid'");
5487
5488                                                                         if (db_num_rows($result) != 0) {
5489                                                                                 ++$num_feeds_created;
5490
5491                                                                                 $feed = db_fetch_result($result, 0, "id");
5492                                                                         }
5493                                                                 }
5494                                                         }
5495
5496                                                         if ($feed != 'NULL')
5497                                                                 $feed_qpart = "feed_id = $feed";
5498                                                         else
5499                                                                 $feed_qpart = "feed_id IS NULL";
5500
5501                                                         //print "$ref_id / $feed / " . $article['title'] . "\n";
5502
5503                                                         $result = db_query($link, "SELECT int_id FROM ttrss_user_entries
5504                                                                 WHERE ref_id = '$ref_id' AND owner_uid = '$owner_uid' AND $feed_qpart");
5505
5506                                                         if (db_num_rows($result) == 0) {
5507
5508                                                                 $marked = bool_to_sql_bool(sql_bool_to_bool($article['marked']));
5509                                                                 $published = bool_to_sql_bool(sql_bool_to_bool($article['published']));
5510                                                                 $score = (int) $article['score'];
5511
5512                                                                 $tag_cache = $article['tag_cache'];
5513                                                                 $label_cache = db_escape_string($article['label_cache']);
5514                                                                 $note = $article['note'];
5515
5516                                                                 //print "Importing " . $article['title'] . "<br/>";
5517
5518                                                                 ++$num_imported;
5519
5520                                                                 $result = db_query($link,
5521                                                                         "INSERT INTO ttrss_user_entries
5522                                                                         (ref_id, owner_uid, feed_id, unread, last_read, marked,
5523                                                                                 published, score, tag_cache, label_cache, uuid, note)
5524                                                                         VALUES ($ref_id, $owner_uid, $feed, false,
5525                                                                                 NULL, $marked, $published, $score, '$tag_cache',
5526                                                                                         '$label_cache', '', '$note')");
5527
5528                                                                 $label_cache = json_decode($label_cache, true);
5529
5530                                                                 if (is_array($label_cache) && $label_cache["no-labels"] != 1) {
5531                                                                         foreach ($label_cache as $label) {
5532
5533                                                                                 label_create($link, $label[1],
5534                                                                                         $label[2], $label[3], $owner_uid);
5535
5536                                                                                 label_add_article($link, $ref_id, $label[1], $owner_uid);
5537
5538                                                                         }
5539                                                                 }
5540
5541                                                                 //db_query($link, "COMMIT");
5542                                                         }
5543                                                 }
5544                                         }
5545                                 }
5546                         }
5547
5548                         print "<p>" .
5549                                 T_sprintf("Finished: %d articles processed, %d imported, %d feeds created.",
5550                                         $num_processed, $num_imported, $num_feeds_created) .
5551                                         "</p>";
5552
5553                 } else {
5554
5555                         print "<p>" . __("Could not load XML document.") . "</p>";
5556
5557                 }
5558         }
5559
5560         function get_random_bytes($length) {
5561                 if (function_exists('openssl_random_pseudo_bytes')) {
5562                         return openssl_random_pseudo_bytes($length);
5563                 } else {
5564                         $output = "";
5565
5566                         for ($i = 0; $i < $length; $i++)
5567                                 $output .= chr(mt_rand(0, 255));
5568
5569                         return $output;
5570                 }
5571         }
5572
5573         function read_stdin() {
5574                 $fp = fopen("php://stdin", "r");
5575
5576                 if ($fp) {
5577                         $line = trim(fgets($fp));
5578                         fclose($fp);
5579                         return $line;
5580                 }
5581
5582                 return null;
5583         }
5584
5585         function tmpdirname($path, $prefix) {
5586                 // Use PHP's tmpfile function to create a temporary
5587                 // directory name. Delete the file and keep the name.
5588                 $tempname = tempnam($path,$prefix);
5589                 if (!$tempname)
5590                         return false;
5591
5592                 if (!unlink($tempname))
5593                         return false;
5594
5595        return $tempname;
5596         }
5597
5598 ?>