include/functions.php

   1 <?php
   2         define('EXPECTED_CONFIG_VERSION', 26);
   3         define('SCHEMA_VERSION', 97);
   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                                         "pl_PL" => "Polski",
  54                                         "ru_RU" => "Русский",
  55                                         "pt_BR" => "Portuguese/Brazil",
  56                                         "zh_CN" => "Simplified Chinese");
  57
  58                 return $tr;
  59         }
  60
  61         require_once "lib/accept-to-gettext.php";
  62         require_once "lib/gettext/gettext.inc";
  63
  64         function startup_gettext() {
  65
  66                 # Get locale from Accept-Language header
  67                 $lang = al2gt(array_keys(get_translations()), "text/html");
  68
  69                 if (defined('_TRANSLATION_OVERRIDE_DEFAULT')) {
  70                         $lang = _TRANSLATION_OVERRIDE_DEFAULT;
  71                 }
  72
  73                 if ($_COOKIE["ttrss_lang"] && $_COOKIE["ttrss_lang"] != "auto") {
  74                         $lang = $_COOKIE["ttrss_lang"];
  75                 }
  76
  77                 /* In login action of mobile version */
  78                 if ($_POST["language"] && defined('MOBILE_VERSION')) {
  79                         $lang = $_POST["language"];
  80                         $_COOKIE["ttrss_lang"] = $lang;
  81                 }
  82
  83                 if ($lang) {
  84                         if (defined('LC_MESSAGES')) {
  85                                 _setlocale(LC_MESSAGES, $lang);
  86                         } else if (defined('LC_ALL')) {
  87                                 _setlocale(LC_ALL, $lang);
  88                         }
  89
  90                         if (defined('MOBILE_VERSION')) {
  91                                 _bindtextdomain("messages", "../locale");
  92                         } else {
  93                                 _bindtextdomain("messages", "locale");
  94                         }
  95
  96                         _textdomain("messages");
  97                         _bind_textdomain_codeset("messages", "UTF-8");
  98                 }
  99         }
 100
 101         startup_gettext();
 102
 103         require_once 'db-prefs.php';
 104         require_once 'version.php';
 105
 106         define('MAGPIE_OUTPUT_ENCODING', 'UTF-8');
 107
 108         define('SELF_USER_AGENT', 'Tiny Tiny RSS/' . VERSION . ' (http://tt-rss.org/)');
 109         define('MAGPIE_USER_AGENT', SELF_USER_AGENT);
 110
 111         ini_set('user_agent', SELF_USER_AGENT);
 112
 113         require_once 'lib/pubsubhubbub/publisher.php';
 114
 115         $purifier = false;
 116
 117         $tz_offset = -1;
 118         $utc_tz = new DateTimeZone('UTC');
 119         $schema_version = false;
 120
 121         /**
 122          * Print a timestamped debug message.
 123          *
 124          * @param string $msg The debug message.
 125          * @return void
 126          */
 127         function _debug($msg) {
 128                 if (defined('QUIET') && QUIET) {
 129                         return;
 130                 }
 131                 $ts = strftime("%H:%M:%S", time());
 132                 if (function_exists('posix_getpid')) {
 133                         $ts = "$ts/" . posix_getpid();
 134                 }
 135                 print "[$ts] $msg\n";
 136         } // function _debug
 137
 138         /**
 139          * Purge a feed old posts.
 140          *
 141          * @param mixed $link A database connection.
 142          * @param mixed $feed_id The id of the purged feed.
 143          * @param mixed $purge_interval Olderness of purged posts.
 144          * @param boolean $debug Set to True to enable the debug. False by default.
 145          * @access public
 146          * @return void
 147          */
 148         function purge_feed($link, $feed_id, $purge_interval, $debug = false) {
 149
 150                 if (!$purge_interval) $purge_interval = feed_purge_interval($link, $feed_id);
 151
 152                 $rows = -1;
 153
 154                 $result = db_query($link,
 155                         "SELECT owner_uid FROM ttrss_feeds WHERE id = '$feed_id'");
 156
 157                 $owner_uid = false;
 158
 159                 if (db_num_rows($result) == 1) {
 160                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 161                 }
 162
 163                 if ($purge_interval == -1 || !$purge_interval) {
 164                         if ($owner_uid) {
 165                                 ccache_update($link, $feed_id, $owner_uid);
 166                         }
 167                         return;
 168                 }
 169
 170                 if (!$owner_uid) return;
 171
 172                 if (FORCE_ARTICLE_PURGE == 0) {
 173                         $purge_unread = get_pref($link, "PURGE_UNREAD_ARTICLES",
 174                                 $owner_uid, false);
 175                 } else {
 176                         $purge_unread = true;
 177                         $purge_interval = FORCE_ARTICLE_PURGE;
 178                 }
 179
 180                 if (!$purge_unread) $query_limit = " unread = false AND ";
 181
 182                 if (DB_TYPE == "pgsql") {
 183                         $pg_version = get_pgsql_version($link);
 184
 185                         if (preg_match("/^7\./", $pg_version) || preg_match("/^8\.0/", $pg_version)) {
 186
 187                                 $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 188                                         ttrss_entries.id = ref_id AND
 189                                         marked = false AND
 190                                         feed_id = '$feed_id' AND
 191                                         $query_limit
 192                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 193
 194                         } else {
 195
 196                                 $result = db_query($link, "DELETE FROM ttrss_user_entries
 197                                         USING ttrss_entries
 198                                         WHERE ttrss_entries.id = ref_id AND
 199                                         marked = false AND
 200                                         feed_id = '$feed_id' AND
 201                                         $query_limit
 202                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 203                         }
 204
 205                         $rows = pg_affected_rows($result);
 206
 207                 } else {
 208
 209 /*                      $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 210                                 marked = false AND feed_id = '$feed_id' AND
 211                                 (SELECT date_updated FROM ttrss_entries WHERE
 212                                         id = ref_id) < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)"); */
 213
 214                         $result = db_query($link, "DELETE FROM ttrss_user_entries
 215                                 USING ttrss_user_entries, ttrss_entries
 216                                 WHERE ttrss_entries.id = ref_id AND
 217                                 marked = false AND
 218                                 feed_id = '$feed_id' AND
 219                                 $query_limit
 220                                 ttrss_entries.date_updated < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)");
 221
 222                         $rows = mysql_affected_rows($link);
 223
 224                 }
 225
 226                 ccache_update($link, $feed_id, $owner_uid);
 227
 228                 if ($debug) {
 229                         _debug("Purged feed $feed_id ($purge_interval): deleted $rows articles");
 230                 }
 231         } // function purge_feed
 232
 233         function feed_purge_interval($link, $feed_id) {
 234
 235                 $result = db_query($link, "SELECT purge_interval, owner_uid FROM ttrss_feeds
 236                         WHERE id = '$feed_id'");
 237
 238                 if (db_num_rows($result) == 1) {
 239                         $purge_interval = db_fetch_result($result, 0, "purge_interval");
 240                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 241
 242                         if ($purge_interval == 0) $purge_interval = get_pref($link,
 243                                 'PURGE_OLD_DAYS', $owner_uid);
 244
 245                         return $purge_interval;
 246
 247                 } else {
 248                         return -1;
 249                 }
 250         }
 251
 252         function purge_orphans($link, $do_output = false) {
 253
 254                 // purge orphaned posts in main content table
 255                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
 256                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
 257
 258                 if ($do_output) {
 259                         $rows = db_affected_rows($link, $result);
 260                         _debug("Purged $rows orphaned posts.");
 261                 }
 262         }
 263
 264         function get_feed_update_interval($link, $feed_id) {
 265                 $result = db_query($link, "SELECT owner_uid, update_interval FROM
 266                         ttrss_feeds WHERE id = '$feed_id'");
 267
 268                 if (db_num_rows($result) == 1) {
 269                         $update_interval = db_fetch_result($result, 0, "update_interval");
 270                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 271
 272                         if ($update_interval != 0) {
 273                                 return $update_interval;
 274                         } else {
 275                                 return get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $owner_uid, false);
 276                         }
 277
 278                 } else {
 279                         return -1;
 280                 }
 281         }
 282
 283         function fetch_file_contents($url, $type = false, $login = false, $pass = false, $post_query = false) {
 284                 $login = urlencode($login);
 285                 $pass = urlencode($pass);
 286
 287                 global $fetch_last_error;
 288
 289                 if (function_exists('curl_init') && !ini_get("open_basedir")) {
 290                         $ch = curl_init($url);
 291
 292                         curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 15);
 293                         curl_setopt($ch, CURLOPT_TIMEOUT, 45);
 294                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
 295                         curl_setopt($ch, CURLOPT_MAXREDIRS, 20);
 296                         curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
 297                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 298                         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 299                         curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 300                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 301                         curl_setopt($ch, CURLOPT_ENCODING , "gzip");
 302
 303                         if ($post_query) {
 304                                 curl_setopt($ch, CURLOPT_POST, true);
 305                                 curl_setopt($ch, CURLOPT_POSTFIELDS, $post_query);
 306                         }
 307
 308                         if ($login && $pass)
 309                                 curl_setopt($ch, CURLOPT_USERPWD, "$login:$pass");
 310
 311                         $contents = @curl_exec($ch);
 312
 313                         if ($contents === false) {
 314                                 $fetch_last_error = curl_error($ch);
 315                                 curl_close($ch);
 316                                 return false;
 317                         }
 318
 319                         $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 320                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 321                         curl_close($ch);
 322
 323                         if ($http_code != 200 || $type && strpos($content_type, "$type") === false) {
 324                                 return false;
 325                         }
 326
 327                         return $contents;
 328                 } else {
 329                         if ($login && $pass ){
 330                                 $url_parts = array();
 331
 332                                 preg_match("/(^[^:]*):\/\/(.*)/", $url, $url_parts);
 333
 334                                 if ($url_parts[1] && $url_parts[2]) {
 335                                         $url = $url_parts[1] . "://$login:$pass@" . $url_parts[2];
 336                                 }
 337                         }
 338
 339                         $data = @file_get_contents($url);
 340
 341                         if (!$data && function_exists('error_get_last')) {
 342                                 $error = error_get_last();
 343                                 $fetch_last_error = $error["message"];
 344                         }
 345                         return $data;
 346                 }
 347
 348         }
 349
 350         /**
 351          * Try to determine the favicon URL for a feed.
 352          * adapted from wordpress favicon plugin by Jeff Minard (http://thecodepro.com/)
 353          * http://dev.wp-plugins.org/file/favatars/trunk/favatars.php
 354          *
 355          * @param string $url A feed or page URL
 356          * @access public
 357          * @return mixed The favicon URL, or false if none was found.
 358          */
 359         function get_favicon_url($url) {
 360
 361                 $favicon_url = false;
 362
 363                 if ($html = @fetch_file_contents($url)) {
 364
 365                         libxml_use_internal_errors(true);
 366
 367                         $doc = new DOMDocument();
 368                         $doc->loadHTML($html);
 369                         $xpath = new DOMXPath($doc);
 370
 371                         $base = $xpath->query('/html/head/base');
 372                         foreach ($base as $b) {
 373                                 $url = $b->getAttribute("href");
 374                                 break;
 375                         }
 376
 377                         $entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon"]');
 378                         if (count($entries) > 0) {
 379                                 foreach ($entries as $entry) {
 380                                         $favicon_url = rewrite_relative_url($url, $entry->getAttribute("href"));
 381                                         break;
 382                                 }
 383                         }
 384                 }
 385
 386                 if (!$favicon_url)
 387                         $favicon_url = rewrite_relative_url($url, "/favicon.ico");
 388
 389                 return $favicon_url;
 390         } // function get_favicon_url
 391
 392         function check_feed_favicon($site_url, $feed, $link) {
 393 #               print "FAVICON [$site_url]: $favicon_url\n";
 394
 395                 $icon_file = ICONS_DIR . "/$feed.ico";
 396
 397                 if (!file_exists($icon_file)) {
 398                         $favicon_url = get_favicon_url($site_url);
 399
 400                         if ($favicon_url) {
 401                                 // Limiting to "image" type misses those served with text/plain
 402                                 $contents = fetch_file_contents($favicon_url); // , "image");
 403
 404                                 if ($contents) {
 405                                         // Crude image type matching.
 406                                         // Patterns gleaned from the file(1) source code.
 407                                         if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
 408                                                 // 0       string  \000\000\001\000        MS Windows icon resource
 409                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
 410                                         }
 411                                         elseif (preg_match('/^GIF8/', $contents)) {
 412                                                 // 0       string          GIF8            GIF image data
 413                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
 414                                         }
 415                                         elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
 416                                                 // 0       string          \x89PNG\x0d\x0a\x1a\x0a         PNG image data
 417                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
 418                                         }
 419                                         elseif (preg_match('/^\xff\xd8/', $contents)) {
 420                                                 // 0       beshort         0xffd8          JPEG image data
 421                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
 422                                         }
 423                                         else {
 424                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
 425                                                 $contents = "";
 426                                         }
 427                                 }
 428
 429                                 if ($contents) {
 430                                         $fp = @fopen($icon_file, "w");
 431
 432                                         if ($fp) {
 433                                                 fwrite($fp, $contents);
 434                                                 fclose($fp);
 435                                                 chmod($icon_file, 0644);
 436                                         }
 437                                 }
 438                         }
 439                 }
 440         }
 441
 442         function print_select($id, $default, $values, $attributes = "") {
 443                 print "<select name=\"$id\" id=\"$id\" $attributes>";
 444                 foreach ($values as $v) {
 445                         if ($v == $default)
 446                                 $sel = "selected=\"1\"";
 447                          else
 448                                 $sel = "";
 449
 450                         print "<option value=\"$v\" $sel>$v</option>";
 451                 }
 452                 print "</select>";
 453         }
 454
 455         function print_select_hash($id, $default, $values, $attributes = "") {
 456                 print "<select name=\"$id\" id='$id' $attributes>";
 457                 foreach (array_keys($values) as $v) {
 458                         if ($v == $default)
 459                                 $sel = 'selected="selected"';
 460                          else
 461                                 $sel = "";
 462
 463                         print "<option $sel value=\"$v\">".$values[$v]."</option>";
 464                 }
 465
 466                 print "</select>";
 467         }
 468
 469         function get_article_filters($filters, $title, $content, $link, $timestamp, $author, $tags) {
 470                 $matches = array();
 471
 472                 foreach ($filters as $filter) {
 473                         $match_any_rule = $filter["match_any_rule"];
 474                         $filter_match = false;
 475
 476                         foreach ($filter["rules"] as $rule) {
 477                                 $match = false;
 478                                 $reg_exp = $rule["reg_exp"];
 479
 480                                 if (!$reg_exp)
 481                                         continue;
 482
 483                                 switch ($rule["type"]) {
 484                                 case "title":
 485                                         $match = @preg_match("/$reg_exp/i", $title);
 486                                         break;
 487                                 case "content":
 488                                         $match = @preg_match("/$reg_exp/i", $content);
 489                                         break;
 490                                 case "both":
 491                                         $match = (@preg_match("/$reg_exp/i", $title) || @preg_match("/$reg_exp/i", $title));
 492                                         break;
 493                                 case "link":
 494                                         $match = @preg_match("/$reg_exp/i", $link);
 495                                         break;
 496                                 case "author":
 497                                         $match = @preg_match("/$reg_exp/i", $author);
 498                                         break;
 499                                 case "tag":
 500                                         $tag_string = join(",", $tags);
 501                                         $match = @preg_match("/$reg_exp/i", $tag_string);
 502                                         break;
 503                                 }
 504
 505                                 if ($match_any_rule) {
 506                                         if ($match) {
 507                                                 $filter_match = true;
 508                                                 break;
 509                                         }
 510                                 } else {
 511                                         $filter_match = $match;
 512                                         if (!$match) {
 513                                                 break;
 514                                         }
 515                                 }
 516                         }
 517
 518                         if ($filter_match) {
 519                                 foreach ($filter["actions"] AS $action) {
 520                                         array_push($matches, $action);
 521                                 }
 522                         }
 523                 }
 524
 525                 return $matches;
 526         }
 527
 528         function find_article_filter($filters, $filter_name) {
 529                 foreach ($filters as $f) {
 530                         if ($f["type"] == $filter_name) {
 531                                 return $f;
 532                         };
 533                 }
 534                 return false;
 535         }
 536
 537         function find_article_filters($filters, $filter_name) {
 538                 $results = array();
 539
 540                 foreach ($filters as $f) {
 541                         if ($f["type"] == $filter_name) {
 542                                 array_push($results, $f);
 543                         };
 544                 }
 545                 return $results;
 546         }
 547
 548         function calculate_article_score($filters) {
 549                 $score = 0;
 550
 551                 foreach ($filters as $f) {
 552                         if ($f["type"] == "score") {
 553                                 $score += $f["param"];
 554                         };
 555                 }
 556                 return $score;
 557         }
 558
 559         function assign_article_to_labels($link, $id, $filters, $owner_uid) {
 560                 foreach ($filters as $f) {
 561                         if ($f["type"] == "label") {
 562                                 label_add_article($link, $id, $f["param"], $owner_uid);
 563                         };
 564                 }
 565         }
 566
 567         function getmicrotime() {
 568                 list($usec, $sec) = explode(" ",microtime());
 569                 return ((float)$usec + (float)$sec);
 570         }
 571
 572         function print_radio($id, $default, $true_is, $values, $attributes = "") {
 573                 foreach ($values as $v) {
 574
 575                         if ($v == $default)
 576                                 $sel = "checked";
 577                          else
 578                                 $sel = "";
 579
 580                         if ($v == $true_is) {
 581                                 $sel .= " value=\"1\"";
 582                         } else {
 583                                 $sel .= " value=\"0\"";
 584                         }
 585
 586                         print "<input class=\"noborder\" dojoType=\"dijit.form.RadioButton\"
 587                                 type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 588
 589                 }
 590         }
 591
 592         function initialize_user_prefs($link, $uid, $profile = false) {
 593
 594                 $uid = db_escape_string($uid);
 595
 596                 if (!$profile) {
 597                         $profile = "NULL";
 598                         $profile_qpart = "AND profile IS NULL";
 599                 } else {
 600                         $profile_qpart = "AND profile = '$profile'";
 601                 }
 602
 603                 if (get_schema_version($link) < 63) $profile_qpart = "";
 604
 605                 db_query($link, "BEGIN");
 606
 607                 $result = db_query($link, "SELECT pref_name,def_value FROM ttrss_prefs");
 608
 609                 $u_result = db_query($link, "SELECT pref_name
 610                         FROM ttrss_user_prefs WHERE owner_uid = '$uid' $profile_qpart");
 611
 612                 $active_prefs = array();
 613
 614                 while ($line = db_fetch_assoc($u_result)) {
 615                         array_push($active_prefs, $line["pref_name"]);
 616                 }
 617
 618                 while ($line = db_fetch_assoc($result)) {
 619                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 620 //                              print "adding " . $line["pref_name"] . "<br>";
 621
 622                                 if (get_schema_version($link) < 63) {
 623                                         db_query($link, "INSERT INTO ttrss_user_prefs
 624                                                 (owner_uid,pref_name,value) VALUES
 625                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 626
 627                                 } else {
 628                                         db_query($link, "INSERT INTO ttrss_user_prefs
 629                                                 (owner_uid,pref_name,value, profile) VALUES
 630                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."', $profile)");
 631                                 }
 632
 633                         }
 634                 }
 635
 636                 db_query($link, "COMMIT");
 637
 638         }
 639
 640         function get_ssl_certificate_id() {
 641                 if ($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"]) {
 642                         return sha1($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"] .
 643                                 $_SERVER["REDIRECT_SSL_CLIENT_V_START"] .
 644                                 $_SERVER["REDIRECT_SSL_CLIENT_V_END"] .
 645                                 $_SERVER["REDIRECT_SSL_CLIENT_S_DN"]);
 646                 }
 647                 return "";
 648         }
 649
 650         function authenticate_user($link, $login, $password, $check_only = false) {
 651
 652                 if (!SINGLE_USER_MODE) {
 653
 654                         $user_id = false;
 655                         $modules = explode(",", AUTH_MODULES);
 656
 657                         foreach ($modules as $module) {
 658                                 $module_class = "auth_$module";
 659                                 if (class_exists($module_class)) {
 660                                         $authenticator = new $module_class($link);
 661
 662                                         $user_id = (int) $authenticator->authenticate($login, $password);
 663
 664                                         if ($user_id) {
 665                                                 $_SESSION["auth_module"] = $module;
 666                                                 break;
 667                                         }
 668
 669                                 } else {
 670                                         print T_sprintf("Fatal: authentication module %s not found.", $module);
 671                                         die;
 672                                 }
 673                         }
 674
 675                         if ($user_id && !$check_only) {
 676                                 $_SESSION["uid"] = $user_id;
 677
 678                                 $result = db_query($link, "SELECT login,access_level,pwd_hash FROM ttrss_users
 679                                         WHERE id = '$user_id'");
 680
 681                                 $_SESSION["name"] = db_fetch_result($result, 0, "login");
 682                                 $_SESSION["access_level"] = db_fetch_result($result, 0, "access_level");
 683                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 684
 685                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 686                                         $_SESSION["uid"]);
 687
 688                                 $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 689                                 $_SESSION["pwd_hash"] = db_fetch_result($result, 0, "pwd_hash");
 690
 691                                 $_SESSION["last_version_check"] = time();
 692
 693                                 initialize_user_prefs($link, $_SESSION["uid"]);
 694
 695                                 return true;
 696                         }
 697
 698                         return false;
 699
 700                 } else {
 701
 702                         $_SESSION["uid"] = 1;
 703                         $_SESSION["name"] = "admin";
 704                         $_SESSION["access_level"] = 10;
 705
 706                         $_SESSION["hide_hello"] = true;
 707                         $_SESSION["hide_logout"] = true;
 708
 709                         $_SESSION["auth_module"] = false;
 710
 711                         if (!$_SESSION["csrf_token"]) {
 712                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 713                         }
 714
 715                         $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 716
 717                         initialize_user_prefs($link, $_SESSION["uid"]);
 718
 719                         return true;
 720                 }
 721         }
 722
 723         function make_password($length = 8) {
 724
 725                 $password = "";
 726                 $possible = "0123456789abcdfghjkmnpqrstvwxyzABCDFGHJKMNPQRSTVWXYZ";
 727
 728         $i = 0;
 729
 730                 while ($i < $length) {
 731                         $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 732
 733                         if (!strstr($password, $char)) {
 734                                 $password .= $char;
 735                                 $i++;
 736                         }
 737                 }
 738                 return $password;
 739         }
 740
 741         // this is called after user is created to initialize default feeds, labels
 742         // or whatever else
 743
 744         // user preferences are checked on every login, not here
 745
 746         function initialize_user($link, $uid) {
 747
 748                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 749                         values ('$uid', 'Tiny Tiny RSS: New Releases',
 750                         'http://tt-rss.org/releases.rss')");
 751
 752                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 753                         values ('$uid', 'Tiny Tiny RSS: Forum',
 754                                 'http://tt-rss.org/forum/rss.php')");
 755         }
 756
 757         function logout_user() {
 758                 session_destroy();
 759                 if (isset($_COOKIE[session_name()])) {
 760                    setcookie(session_name(), '', time()-42000, '/');
 761                 }
 762         }
 763
 764         function validate_csrf($csrf_token) {
 765                 return $csrf_token == $_SESSION['csrf_token'];
 766         }
 767
 768         function validate_session($link) {
 769                 if (SINGLE_USER_MODE) return true;
 770
 771                 $check_ip = $_SESSION['ip_address'];
 772
 773                 switch (SESSION_CHECK_ADDRESS) {
 774                 case 0:
 775                         $check_ip = '';
 776                         break;
 777                 case 1:
 778                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 779                         break;
 780                 case 2:
 781                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.'));
 782                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 783                         break;
 784                 };
 785
 786                 if ($check_ip && strpos($_SERVER['REMOTE_ADDR'], $check_ip) !== 0) {
 787                         $_SESSION["login_error_msg"] =
 788                                 __("Session failed to validate (incorrect IP)");
 789                         return false;
 790                 }
 791
 792                 if ($_SESSION["ref_schema_version"] != get_schema_version($link, true))
 793                         return false;
 794
 795                 if ($_SESSION["uid"]) {
 796
 797                         $result = db_query($link,
 798                                 "SELECT pwd_hash FROM ttrss_users WHERE id = '".$_SESSION["uid"]."'");
 799
 800                         $pwd_hash = db_fetch_result($result, 0, "pwd_hash");
 801
 802                         if ($pwd_hash != $_SESSION["pwd_hash"]) {
 803                                 return false;
 804                         }
 805                 }
 806
 807 /*              if ($_SESSION["cookie_lifetime"] && $_SESSION["uid"]) {
 808
 809                         //print_r($_SESSION);
 810
 811                         if (time() > $_SESSION["cookie_lifetime"]) {
 812                                 return false;
 813                         }
 814                 } */
 815
 816                 return true;
 817         }
 818
 819         function login_sequence($link, $login_form = 0) {
 820                 if (SINGLE_USER_MODE) {
 821                         return authenticate_user($link, "admin", null);
 822                 } else {
 823                         if (!$_SESSION["uid"] || !validate_session($link)) {
 824
 825                                 if (AUTH_AUTO_LOGIN && authenticate_user($link, null, null)) {
 826                                     $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 827                                 } else {
 828                                          authenticate_user($link, null, null, true);
 829                                 }
 830
 831                                 if (!$_SESSION["uid"]) render_login_form($link, $login_form);
 832
 833                         } else {
 834                                 /* bump login timestamp */
 835                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 836                                         $_SESSION["uid"]);
 837
 838                                 if ($_SESSION["language"] && SESSION_COOKIE_LIFETIME > 0) {
 839                                         setcookie("ttrss_lang", $_SESSION["language"],
 840                                                 time() + SESSION_COOKIE_LIFETIME);
 841                                 }
 842                         }
 843                 }
 844         }
 845
 846
 847         /* function login_sequence($link, $mobile = false) {
 848                 $_SESSION["prefs_cache"] = array();
 849
 850                 if (!SINGLE_USER_MODE) {
 851
 852                         $login_action = $_POST["login_action"];
 853
 854                         # try to authenticate user if called from login form
 855                         if ($login_action == "do_login") {
 856                                 $login = db_escape_string($_POST["login"]);
 857                                 $password = $_POST["password"];
 858                                 $remember_me = $_POST["remember_me"];
 859
 860                                 if (authenticate_user($link, $login, $password)) {
 861                                         $_POST["password"] = "";
 862
 863                                         $_SESSION["language"] = $_POST["language"];
 864                                         $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 865                                         $_SESSION["bw_limit"] = !!$_POST["bw_limit"];
 866
 867                                         if ($_POST["profile"]) {
 868
 869                                                 $profile = db_escape_string($_POST["profile"]);
 870
 871                                                 $result = db_query($link, "SELECT id FROM ttrss_settings_profiles
 872                                                         WHERE id = '$profile' AND owner_uid = " . $_SESSION["uid"]);
 873
 874                                                 if (db_num_rows($result) != 0) {
 875                                                         $_SESSION["profile"] = $profile;
 876                                                         $_SESSION["prefs_cache"] = array();
 877                                                 }
 878                                         }
 879
 880                                         if ($_REQUEST['return']) {
 881                                                 header("Location: " . $_REQUEST['return']);
 882                                         } else {
 883                                                 header("Location: " . $_SERVER["REQUEST_URI"]);
 884                                         }
 885
 886                                         exit;
 887
 888                                         return;
 889                                 } else {
 890                                         $_SESSION["login_error_msg"] = __("Incorrect username or password");
 891                                 }
 892                         }
 893
 894                         if (!$_SESSION["uid"] || !validate_session($link)) {
 895
 896                                 if (AUTH_AUTO_LOGIN && authenticate_user($link, null, null)) {
 897                                     $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 898                                 } else {
 899                                          authenticate_user($link, null, null, true);
 900                                     render_login_form($link, $mobile);
 901                                     exit;
 902                                 }
 903                         } else {
 904                                 // bump login timestamp
 905                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 906                                         $_SESSION["uid"]);
 907
 908                                 if ($_SESSION["language"] && SESSION_COOKIE_LIFETIME > 0) {
 909                                         setcookie("ttrss_lang", $_SESSION["language"],
 910                                                 time() + SESSION_COOKIE_LIFETIME);
 911                                 }
 912
 913                                 // try to remove possible duplicates from feed counter cache
 914 //                              ccache_cleanup($link, $_SESSION["uid"]);
 915                         }
 916
 917                 } else {
 918                         return authenticate_user($link, "admin", null);
 919                 }
 920         } */
 921
 922         function truncate_string($str, $max_len, $suffix = '&hellip;') {
 923                 if (mb_strlen($str, "utf-8") > $max_len - 3) {
 924                         return mb_substr($str, 0, $max_len, "utf-8") . $suffix;
 925                 } else {
 926                         return $str;
 927                 }
 928         }
 929
 930         function theme_image($link, $filename) {
 931                 if ($link) {
 932                         $theme_path = get_user_theme_path($link);
 933
 934                         if ($theme_path && is_file($theme_path.$filename)) {
 935                                 return $theme_path.$filename;
 936                         } else {
 937                                 return $filename;
 938                         }
 939                 } else {
 940                         return $filename;
 941                 }
 942         }
 943
 944         function get_user_theme($link) {
 945
 946                 if (get_schema_version($link) >= 63 && $_SESSION["uid"]) {
 947                         $theme_name = get_pref($link, "_THEME_ID");
 948                         if (is_dir("themes/$theme_name")) {
 949                                 return $theme_name;
 950                         } else {
 951                                 return '';
 952                         }
 953                 } else {
 954                         return '';
 955                 }
 956
 957         }
 958
 959         function get_user_theme_path($link) {
 960                 $theme_path = '';
 961
 962                 if (get_schema_version($link) >= 63 && $_SESSION["uid"]) {
 963                         $theme_name = get_pref($link, "_THEME_ID");
 964
 965                         if ($theme_name && is_dir("themes/$theme_name")) {
 966                                 $theme_path = "themes/$theme_name/";
 967                         } else {
 968                                 $theme_name = '';
 969                         }
 970                 } else {
 971                         $theme_path = '';
 972                 }
 973
 974                 if ($theme_path) {
 975                         if (is_file("$theme_path/theme.ini")) {
 976                                 $ini = parse_ini_file("$theme_path/theme.ini", true);
 977                                 if ($ini['theme']['version'] >= THEME_VERSION_REQUIRED) {
 978                                         return $theme_path;
 979                                 }
 980                         }
 981                 }
 982                 return '';
 983         }
 984
 985         function get_user_theme_options($link) {
 986                 $t = get_user_theme_path($link);
 987
 988                 if ($t) {
 989                         if (is_file("$t/theme.ini")) {
 990                                 $ini = parse_ini_file("$t/theme.ini", true);
 991                                 if ($ini['theme']['version']) {
 992                                         return $ini['theme']['options'];
 993                                 }
 994                         }
 995                 }
 996                 return '';
 997         }
 998
 999         function print_theme_includes($link) {
1000
1001                 $t = get_user_theme_path($link);
1002                 $time = time();
1003
1004                 if ($t) {
1005                         print "<link rel=\"stylesheet\" type=\"text/css\"
1006                                 href=\"$t/theme.css?$time \">";
1007                         if (file_exists("$t/theme.js")) {
1008                                 print "<script type=\"text/javascript\" src=\"$t/theme.js?$time\">
1009                                         </script>";
1010                         }
1011                 }
1012         }
1013
1014         function get_all_themes() {
1015                 $themes = glob("themes/*");
1016
1017                 asort($themes);
1018
1019                 $rv = array();
1020
1021                 foreach ($themes as $t) {
1022                         if (is_file("$t/theme.ini")) {
1023                                 $ini = parse_ini_file("$t/theme.ini", true);
1024                                 if ($ini['theme']['version'] >= THEME_VERSION_REQUIRED &&
1025                                                         !$ini['theme']['disabled']) {
1026                                         $entry = array();
1027                                         $entry["path"] = $t;
1028                                         $entry["base"] = basename($t);
1029                                         $entry["name"] = $ini['theme']['name'];
1030                                         $entry["version"] = $ini['theme']['version'];
1031                                         $entry["author"] = $ini['theme']['author'];
1032                                         $entry["options"] = $ini['theme']['options'];
1033                                         array_push($rv, $entry);
1034                                 }
1035                         }
1036                 }
1037
1038                 return $rv;
1039         }
1040
1041         function convert_timestamp($timestamp, $source_tz, $dest_tz) {
1042
1043                 try {
1044                         $source_tz = new DateTimeZone($source_tz);
1045                 } catch (Exception $e) {
1046                         $source_tz = new DateTimeZone('UTC');
1047                 }
1048
1049                 try {
1050                         $dest_tz = new DateTimeZone($dest_tz);
1051                 } catch (Exception $e) {
1052                         $dest_tz = new DateTimeZone('UTC');
1053                 }
1054
1055                 $dt = new DateTime(date('Y-m-d H:i:s', $timestamp), $source_tz);
1056                 return $dt->format('U') + $dest_tz->getOffset($dt);
1057         }
1058
1059         function make_local_datetime($link, $timestamp, $long, $owner_uid = false,
1060                                         $no_smart_dt = false) {
1061
1062                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
1063                 if (!$timestamp) $timestamp = '1970-01-01 0:00';
1064
1065                 global $utc_tz;
1066                 global $tz_offset;
1067
1068                 # We store date in UTC internally
1069                 $dt = new DateTime($timestamp, $utc_tz);
1070
1071                 if ($tz_offset == -1) {
1072
1073                         $user_tz_string = get_pref($link, 'USER_TIMEZONE', $owner_uid);
1074
1075                         try {
1076                                 $user_tz = new DateTimeZone($user_tz_string);
1077                         } catch (Exception $e) {
1078                                 $user_tz = $utc_tz;
1079                         }
1080
1081                         $tz_offset = $user_tz->getOffset($dt);
1082                 }
1083
1084                 $user_timestamp = $dt->format('U') + $tz_offset;
1085
1086                 if (!$no_smart_dt) {
1087                         return smart_date_time($link, $user_timestamp,
1088                                 $tz_offset, $owner_uid);
1089                 } else {
1090                         if ($long)
1091                                 $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
1092                         else
1093                                 $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
1094
1095                         return date($format, $user_timestamp);
1096                 }
1097         }
1098
1099         function smart_date_time($link, $timestamp, $tz_offset = 0, $owner_uid = false) {
1100                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
1101
1102                 if (date("Y.m.d", $timestamp) == date("Y.m.d", time() + $tz_offset)) {
1103                         return date("G:i", $timestamp);
1104                 } else if (date("Y", $timestamp) == date("Y", time() + $tz_offset)) {
1105                         $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
1106                         return date($format, $timestamp);
1107                 } else {
1108                         $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
1109                         return date($format, $timestamp);
1110                 }
1111         }
1112
1113         function sql_bool_to_bool($s) {
1114                 if ($s == "t" || $s == "1" || $s == "true") {
1115                         return true;
1116                 } else {
1117                         return false;
1118                 }
1119         }
1120
1121         function bool_to_sql_bool($s) {
1122                 if ($s) {
1123                         return "true";
1124                 } else {
1125                         return "false";
1126                 }
1127         }
1128
1129         // Session caching removed due to causing wrong redirects to upgrade
1130         // script when get_schema_version() is called on an obsolete session
1131         // created on a previous schema version.
1132         function get_schema_version($link, $nocache = false) {
1133                 global $schema_version;
1134
1135                 if (!$schema_version) {
1136                         $result = db_query($link, "SELECT schema_version FROM ttrss_version");
1137                         $version = db_fetch_result($result, 0, "schema_version");
1138                         $schema_version = $version;
1139                         return $version;
1140                 } else {
1141                         return $schema_version;
1142                 }
1143         }
1144
1145         function sanity_check($link) {
1146                 require_once 'errors.php';
1147
1148                 $error_code = 0;
1149                 $schema_version = get_schema_version($link, true);
1150
1151                 if ($schema_version != SCHEMA_VERSION) {
1152                         $error_code = 5;
1153                 }
1154
1155                 if (DB_TYPE == "mysql") {
1156                         $result = db_query($link, "SELECT true", false);
1157                         if (db_num_rows($result) != 1) {
1158                                 $error_code = 10;
1159                         }
1160                 }
1161
1162                 if (db_escape_string("testTEST") != "testTEST") {
1163                         $error_code = 12;
1164                 }
1165
1166                 return array("code" => $error_code, "message" => $ERRORS[$error_code]);
1167         }
1168
1169         function file_is_locked($filename) {
1170                 if (function_exists('flock')) {
1171                         $fp = @fopen(LOCK_DIRECTORY . "/$filename", "r");
1172                         if ($fp) {
1173                                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1174                                         flock($fp, LOCK_UN);
1175                                         fclose($fp);
1176                                         return false;
1177                                 }
1178                                 fclose($fp);
1179                                 return true;
1180                         } else {
1181                                 return false;
1182                         }
1183                 }
1184                 return true; // consider the file always locked and skip the test
1185         }
1186
1187         function make_lockfile($filename) {
1188                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
1189
1190                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1191                         if (function_exists('posix_getpid')) {
1192                                 fwrite($fp, posix_getpid() . "\n");
1193                         }
1194                         return $fp;
1195                 } else {
1196                         return false;
1197                 }
1198         }
1199
1200         function make_stampfile($filename) {
1201                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
1202
1203                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1204                         fwrite($fp, time() . "\n");
1205                         flock($fp, LOCK_UN);
1206                         fclose($fp);
1207                         return true;
1208                 } else {
1209                         return false;
1210                 }
1211         }
1212
1213         function sql_random_function() {
1214                 if (DB_TYPE == "mysql") {
1215                         return "RAND()";
1216                 } else {
1217                         return "RANDOM()";
1218                 }
1219         }
1220
1221         function catchup_feed($link, $feed, $cat_view, $owner_uid = false, $max_id = false) {
1222
1223                         if (!$owner_uid) $owner_uid = $_SESSION['uid'];
1224
1225                         //if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
1226
1227                         $ref_check_qpart = ($max_id &&
1228                                 !get_pref($link, 'REVERSE_HEADLINES')) ? "ref_id <= '$max_id'" : "true";
1229
1230                         if (is_numeric($feed)) {
1231                                 if ($cat_view) {
1232
1233                                         if ($feed >= 0) {
1234
1235                                                 if ($feed > 0) {
1236                                                         $cat_qpart = "cat_id = '$feed'";
1237                                                 } else {
1238                                                         $cat_qpart = "cat_id IS NULL";
1239                                                 }
1240
1241                                                 $tmp_result = db_query($link, "SELECT id
1242                                                         FROM ttrss_feeds WHERE $cat_qpart AND owner_uid = $owner_uid");
1243
1244                                                 while ($tmp_line = db_fetch_assoc($tmp_result)) {
1245
1246                                                         $tmp_feed = $tmp_line["id"];
1247
1248                                                         db_query($link, "UPDATE ttrss_user_entries
1249                                                                 SET unread = false,last_read = NOW()
1250                                                                 WHERE feed_id = '$tmp_feed'
1251                                                                 AND $ref_check_qpart
1252                                                                 AND owner_uid = $owner_uid");
1253                                                 }
1254                                         } else if ($feed == -2) {
1255
1256                                                 db_query($link, "UPDATE ttrss_user_entries
1257                                                         SET unread = false,last_read = NOW() WHERE (SELECT COUNT(*)
1258                                                                 FROM ttrss_user_labels2 WHERE article_id = ref_id) > 0
1259                                                                 AND $ref_check_qpart
1260                                                                 AND unread = true AND owner_uid = $owner_uid");
1261                                         }
1262
1263                                 } else if ($feed > 0) {
1264
1265                                         db_query($link, "UPDATE ttrss_user_entries
1266                                                         SET unread = false,last_read = NOW()
1267                                                         WHERE feed_id = '$feed'
1268                                                         AND $ref_check_qpart
1269                                                         AND owner_uid = $owner_uid");
1270
1271                                 } else if ($feed < 0 && $feed > -10) { // special, like starred
1272
1273                                         if ($feed == -1) {
1274                                                 db_query($link, "UPDATE ttrss_user_entries
1275                                                         SET unread = false,last_read = NOW()
1276                                                         WHERE marked = true
1277                                                         AND $ref_check_qpart
1278                                                         AND owner_uid = $owner_uid");
1279                                         }
1280
1281                                         if ($feed == -2) {
1282                                                 db_query($link, "UPDATE ttrss_user_entries
1283                                                         SET unread = false,last_read = NOW()
1284                                                         WHERE published = true
1285                                                         AND $ref_check_qpart
1286                                                         AND owner_uid = $owner_uid");
1287                                         }
1288
1289                                         if ($feed == -3) {
1290
1291                                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE");
1292
1293                                                 if (DB_TYPE == "pgsql") {
1294                                                         $match_part = "updated > NOW() - INTERVAL '$intl hour' ";
1295                                                 } else {
1296                                                         $match_part = "updated > DATE_SUB(NOW(),
1297                                                                 INTERVAL $intl HOUR) ";
1298                                                 }
1299
1300                                                 $result = db_query($link, "SELECT id FROM ttrss_entries,
1301                                                         ttrss_user_entries WHERE $match_part AND
1302                                                         unread = true AND
1303                                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
1304                                                         owner_uid = $owner_uid");
1305
1306                                                 $affected_ids = array();
1307
1308                                                 while ($line = db_fetch_assoc($result)) {
1309                                                         array_push($affected_ids, $line["id"]);
1310                                                 }
1311
1312                                                 catchupArticlesById($link, $affected_ids, 0);
1313                                         }
1314
1315                                         if ($feed == -4) {
1316                                                 db_query($link, "UPDATE ttrss_user_entries
1317                                                         SET unread = false,last_read = NOW()
1318                                                         WHERE $ref_check_qpart AND owner_uid = $owner_uid");
1319                                         }
1320
1321                                 } else if ($feed < -10) { // label
1322
1323                                         $label_id = -$feed - 11;
1324
1325                                         db_query($link, "UPDATE ttrss_user_entries, ttrss_user_labels2
1326                                                 SET unread = false, last_read = NOW()
1327                                                         WHERE label_id = '$label_id' AND unread = true
1328                                                         AND $ref_check_qpart
1329                                                         AND owner_uid = '$owner_uid' AND ref_id = article_id");
1330
1331                                 }
1332
1333                                 ccache_update($link, $feed, $owner_uid, $cat_view);
1334
1335                         } else { // tag
1336                                 db_query($link, "BEGIN");
1337
1338                                 $tag_name = db_escape_string($feed);
1339
1340                                 $result = db_query($link, "SELECT post_int_id FROM ttrss_tags
1341                                         WHERE tag_name = '$tag_name' AND owner_uid = $owner_uid");
1342
1343                                 while ($line = db_fetch_assoc($result)) {
1344                                         db_query($link, "UPDATE ttrss_user_entries SET
1345                                                 unread = false, last_read = NOW()
1346                                                 WHERE $ref_check_qpart AND int_id = " . $line["post_int_id"]);
1347                                 }
1348                                 db_query($link, "COMMIT");
1349                         }
1350         }
1351
1352         function getAllCounters($link, $omode = "flc", $active_feed = false) {
1353
1354                 if (!$omode) $omode = "flc";
1355
1356                 $data = getGlobalCounters($link);
1357
1358                 $data = array_merge($data, getVirtCounters($link));
1359
1360                 if (strchr($omode, "l")) $data = array_merge($data, getLabelCounters($link));
1361                 if (strchr($omode, "f")) $data = array_merge($data, getFeedCounters($link, $active_feed));
1362                 if (strchr($omode, "t")) $data = array_merge($data, getTagCounters($link));
1363                 if (strchr($omode, "c")) $data = array_merge($data, getCategoryCounters($link));
1364
1365                 return $data;
1366         }
1367
1368         function getCategoryTitle($link, $cat_id) {
1369
1370                 if ($cat_id == -1) {
1371                         return __("Special");
1372                 } else if ($cat_id == -2) {
1373                         return __("Labels");
1374                 } else {
1375
1376                         $result = db_query($link, "SELECT title FROM ttrss_feed_categories WHERE
1377                                 id = '$cat_id'");
1378
1379                         if (db_num_rows($result) == 1) {
1380                                 return db_fetch_result($result, 0, "title");
1381                         } else {
1382                                 return "Uncategorized";
1383                         }
1384                 }
1385         }
1386
1387
1388         function getCategoryCounters($link) {
1389                 $ret_arr = array();
1390
1391                 /* Labels category */
1392
1393                 $cv = array("id" => -2, "kind" => "cat",
1394                         "counter" => getCategoryUnread($link, -2));
1395
1396                 array_push($ret_arr, $cv);
1397
1398                 $result = db_query($link, "SELECT id AS cat_id, value AS unread,
1399                         (SELECT COUNT(id) FROM ttrss_feed_categories AS c2
1400                                 WHERE c2.parent_cat = ttrss_feed_categories.id) AS num_children
1401                         FROM ttrss_feed_categories, ttrss_cat_counters_cache
1402                         WHERE ttrss_cat_counters_cache.feed_id = id AND
1403                         ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid AND
1404                         ttrss_feed_categories.owner_uid = " . $_SESSION["uid"]);
1405
1406                 while ($line = db_fetch_assoc($result)) {
1407                         $line["cat_id"] = (int) $line["cat_id"];
1408
1409                         if ($line["num_children"] > 0) {
1410                                 $child_counter = getCategoryChildrenUnread($link, $line["cat_id"], $_SESSION["uid"]);
1411                         } else {
1412                                 $child_counter = 0;
1413                         }
1414
1415                         $cv = array("id" => $line["cat_id"], "kind" => "cat",
1416                                 "child_counter" => $child_counter,
1417                                 "counter" => $line["unread"]);
1418
1419                         array_push($ret_arr, $cv);
1420                 }
1421
1422                 /* Special case: NULL category doesn't actually exist in the DB */
1423
1424                 $cv = array("id" => 0, "kind" => "cat",
1425                         "counter" => ccache_find($link, 0, $_SESSION["uid"], true));
1426
1427                 array_push($ret_arr, $cv);
1428
1429                 return $ret_arr;
1430         }
1431
1432         // only accepts real cats (>= 0)
1433         function getCategoryChildrenUnread($link, $cat, $owner_uid = false) {
1434                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1435
1436                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories WHERE parent_cat = '$cat'
1437                                 AND owner_uid = $owner_uid");
1438
1439                 $unread = 0;
1440
1441                 while ($line = db_fetch_assoc($result)) {
1442                         $unread += getCategoryUnread($link, $line["id"], $owner_uid);
1443                         $unread += getCategoryChildrenUnread($link, $line["id"], $owner_uid);
1444                 }
1445
1446                 return $unread;
1447         }
1448
1449         function getCategoryUnread($link, $cat, $owner_uid = false) {
1450
1451                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1452
1453                 if ($cat >= 0) {
1454
1455                         if ($cat != 0) {
1456                                 $cat_query = "cat_id = '$cat'";
1457                         } else {
1458                                 $cat_query = "cat_id IS NULL";
1459                         }
1460
1461                         $result = db_query($link, "SELECT id FROM ttrss_feeds WHERE $cat_query
1462                                         AND owner_uid = " . $owner_uid);
1463
1464                         $cat_feeds = array();
1465                         while ($line = db_fetch_assoc($result)) {
1466                                 array_push($cat_feeds, "feed_id = " . $line["id"]);
1467                         }
1468
1469                         if (count($cat_feeds) == 0) return 0;
1470
1471                         $match_part = implode(" OR ", $cat_feeds);
1472
1473                         $result = db_query($link, "SELECT COUNT(int_id) AS unread
1474                                 FROM ttrss_user_entries
1475                                 WHERE   unread = true AND ($match_part)
1476                                 AND owner_uid = " . $owner_uid);
1477
1478                         $unread = 0;
1479
1480                         # this needs to be rewritten
1481                         while ($line = db_fetch_assoc($result)) {
1482                                 $unread += $line["unread"];
1483                         }
1484
1485                         return $unread;
1486                 } else if ($cat == -1) {
1487                         return getFeedUnread($link, -1) + getFeedUnread($link, -2) + getFeedUnread($link, -3) + getFeedUnread($link, 0);
1488                 } else if ($cat == -2) {
1489
1490                         $result = db_query($link, "
1491                                 SELECT COUNT(unread) AS unread FROM
1492                                         ttrss_user_entries, ttrss_user_labels2
1493                                 WHERE article_id = ref_id AND unread = true
1494                                         AND ttrss_user_entries.owner_uid = '$owner_uid'");
1495
1496                         $unread = db_fetch_result($result, 0, "unread");
1497
1498                         return $unread;
1499
1500                 }
1501         }
1502
1503         function getFeedUnread($link, $feed, $is_cat = false) {
1504                 return getFeedArticles($link, $feed, $is_cat, true, $_SESSION["uid"]);
1505         }
1506
1507         function getLabelUnread($link, $label_id, $owner_uid = false) {
1508                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1509
1510                 $result = db_query($link, "SELECT COUNT(ref_id) AS unread FROM ttrss_user_entries, ttrss_user_labels2
1511                         WHERE owner_uid = '$owner_uid' AND unread = true AND label_id = '$label_id' AND article_id = ref_id");
1512
1513                 if (db_num_rows($result) != 0) {
1514                         return db_fetch_result($result, 0, "unread");
1515                 } else {
1516                         return 0;
1517                 }
1518         }
1519
1520         function getFeedArticles($link, $feed, $is_cat = false, $unread_only = false,
1521                 $owner_uid = false) {
1522
1523                 $n_feed = (int) $feed;
1524                 $need_entries = false;
1525
1526                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1527
1528                 if ($unread_only) {
1529                         $unread_qpart = "unread = true";
1530                 } else {
1531                         $unread_qpart = "true";
1532                 }
1533
1534                 if ($is_cat) {
1535                         return getCategoryUnread($link, $n_feed, $owner_uid);
1536                 } else if ($n_feed == -6) {
1537                         return 0;
1538                 } else if ($feed != "0" && $n_feed == 0) {
1539
1540                         $feed = db_escape_string($feed);
1541
1542                         $result = db_query($link, "SELECT SUM((SELECT COUNT(int_id)
1543                                 FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1544                                         AND ref_id = id AND $unread_qpart)) AS count FROM ttrss_tags
1545                                 WHERE owner_uid = $owner_uid AND tag_name = '$feed'");
1546                         return db_fetch_result($result, 0, "count");
1547
1548                 } else if ($n_feed == -1) {
1549                         $match_part = "marked = true";
1550                 } else if ($n_feed == -2) {
1551                         $match_part = "published = true";
1552                 } else if ($n_feed == -3) {
1553                         $match_part = "unread = true AND score >= 0";
1554
1555                         $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
1556
1557                         if (DB_TYPE == "pgsql") {
1558                                 $match_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
1559                         } else {
1560                                 $match_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
1561                         }
1562
1563                         $need_entries = true;
1564
1565                 } else if ($n_feed == -4) {
1566                         $match_part = "true";
1567                 } else if ($n_feed >= 0) {
1568
1569                         if ($n_feed != 0) {
1570                                 $match_part = "feed_id = '$n_feed'";
1571                         } else {
1572                                 $match_part = "feed_id IS NULL";
1573                         }
1574
1575                 } else if ($feed < -10) {
1576
1577                         $label_id = -$feed - 11;
1578
1579                         return getLabelUnread($link, $label_id, $owner_uid);
1580
1581                 }
1582
1583                 if ($match_part) {
1584
1585                         if ($need_entries) {
1586                                 $from_qpart = "ttrss_user_entries,ttrss_entries";
1587                                 $from_where = "ttrss_entries.id = ttrss_user_entries.ref_id AND";
1588                         } else {
1589                                 $from_qpart = "ttrss_user_entries";
1590                         }
1591
1592                         $query = "SELECT count(int_id) AS unread
1593                                 FROM $from_qpart WHERE
1594                                 $unread_qpart AND $from_where ($match_part) AND ttrss_user_entries.owner_uid = $owner_uid";
1595
1596                         //echo "[$feed/$query]\n";
1597
1598                         $result = db_query($link, $query);
1599
1600                 } else {
1601
1602                         $result = db_query($link, "SELECT COUNT(post_int_id) AS unread
1603                                 FROM ttrss_tags,ttrss_user_entries,ttrss_entries
1604                                 WHERE tag_name = '$feed' AND post_int_id = int_id AND ref_id = ttrss_entries.id
1605                                 AND $unread_qpart AND ttrss_tags.owner_uid = " . $owner_uid);
1606                 }
1607
1608                 $unread = db_fetch_result($result, 0, "unread");
1609
1610                 return $unread;
1611         }
1612
1613         function getGlobalUnread($link, $user_id = false) {
1614
1615                 if (!$user_id) {
1616                         $user_id = $_SESSION["uid"];
1617                 }
1618
1619                 $result = db_query($link, "SELECT SUM(value) AS c_id FROM ttrss_counters_cache
1620                         WHERE owner_uid = '$user_id' AND feed_id > 0");
1621
1622                 $c_id = db_fetch_result($result, 0, "c_id");
1623
1624                 return $c_id;
1625         }
1626
1627         function getGlobalCounters($link, $global_unread = -1) {
1628                 $ret_arr = array();
1629
1630                 if ($global_unread == -1) {
1631                         $global_unread = getGlobalUnread($link);
1632                 }
1633
1634                 $cv = array("id" => "global-unread",
1635                         "counter" => $global_unread);
1636
1637                 array_push($ret_arr, $cv);
1638
1639                 $result = db_query($link, "SELECT COUNT(id) AS fn FROM
1640                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1641
1642                 $subscribed_feeds = db_fetch_result($result, 0, "fn");
1643
1644                 $cv = array("id" => "subscribed-feeds",
1645                         "counter" => $subscribed_feeds);
1646
1647                 array_push($ret_arr, $cv);
1648
1649                 return $ret_arr;
1650         }
1651
1652         function getTagCounters($link) {
1653
1654                 $ret_arr = array();
1655
1656                 $result = db_query($link, "SELECT tag_name,SUM((SELECT COUNT(int_id)
1657                         FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1658                                 AND ref_id = id AND unread = true)) AS count FROM ttrss_tags
1659                                 WHERE owner_uid = ".$_SESSION['uid']." GROUP BY tag_name
1660                                 ORDER BY count DESC LIMIT 55");
1661
1662                 $tags = array();
1663
1664                 while ($line = db_fetch_assoc($result)) {
1665                         $tags[$line["tag_name"]] += $line["count"];
1666                 }
1667
1668                 foreach (array_keys($tags) as $tag) {
1669                         $unread = $tags[$tag];
1670                         $tag = htmlspecialchars($tag);
1671
1672                         $cv = array("id" => $tag,
1673                                 "kind" => "tag",
1674                                 "counter" => $unread);
1675
1676                         array_push($ret_arr, $cv);
1677                 }
1678
1679                 return $ret_arr;
1680         }
1681
1682         function getVirtCounters($link) {
1683
1684                 $ret_arr = array();
1685
1686                 for ($i = 0; $i >= -4; $i--) {
1687
1688                         $count = getFeedUnread($link, $i);
1689
1690                         $cv = array("id" => $i,
1691                                 "counter" => $count);
1692
1693 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1694 //                              $cv["xmsg"] = getFeedArticles($link, $i)." ".__("total");
1695
1696                         array_push($ret_arr, $cv);
1697                 }
1698
1699                 return $ret_arr;
1700         }
1701
1702         function getLabelCounters($link, $descriptions = false) {
1703
1704                 $ret_arr = array();
1705
1706                 $owner_uid = $_SESSION["uid"];
1707
1708                 $result = db_query($link, "SELECT id, caption FROM ttrss_labels2
1709                         WHERE owner_uid = '$owner_uid'");
1710
1711                 while ($line = db_fetch_assoc($result)) {
1712
1713                         $id = -$line["id"] - 11;
1714
1715                         $label_name = $line["caption"];
1716                         $count = getFeedUnread($link, $id);
1717
1718                         $cv = array("id" => $id,
1719                                 "counter" => $count);
1720
1721                         if ($descriptions)
1722                                 $cv["description"] = $label_name;
1723
1724 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1725 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1726
1727                         array_push($ret_arr, $cv);
1728                 }
1729
1730                 return $ret_arr;
1731         }
1732
1733         function getFeedCounters($link, $active_feed = false) {
1734
1735                 $ret_arr = array();
1736
1737                 $query = "SELECT ttrss_feeds.id,
1738                                 ttrss_feeds.title,
1739                                 ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
1740                                 last_error, value AS count
1741                         FROM ttrss_feeds, ttrss_counters_cache
1742                         WHERE ttrss_feeds.owner_uid = ".$_SESSION["uid"]."
1743                                 AND ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid
1744                                 AND ttrss_counters_cache.feed_id = id";
1745
1746                 $result = db_query($link, $query);
1747                 $fctrs_modified = false;
1748
1749                 while ($line = db_fetch_assoc($result)) {
1750
1751                         $id = $line["id"];
1752                         $count = $line["count"];
1753                         $last_error = htmlspecialchars($line["last_error"]);
1754
1755                         $last_updated = make_local_datetime($link, $line['last_updated'], false);
1756
1757                         $has_img = feed_has_icon($id);
1758
1759                         if (date('Y') - date('Y', strtotime($line['last_updated'])) > 2)
1760                                 $last_updated = '';
1761
1762                         $cv = array("id" => $id,
1763                                 "updated" => $last_updated,
1764                                 "counter" => $count,
1765                                 "has_img" => (int) $has_img);
1766
1767                         if ($last_error)
1768                                 $cv["error"] = $last_error;
1769
1770 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1771 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1772
1773                         if ($active_feed && $id == $active_feed)
1774                                 $cv["title"] = truncate_string($line["title"], 30);
1775
1776                         array_push($ret_arr, $cv);
1777
1778                 }
1779
1780                 return $ret_arr;
1781         }
1782
1783         function get_pgsql_version($link) {
1784                 $result = db_query($link, "SELECT version() AS version");
1785                 $version = explode(" ", db_fetch_result($result, 0, "version"));
1786                 return $version[1];
1787         }
1788
1789         /**
1790          * @return array (code => Status code, message => error message if available)
1791          *
1792          *                 0 - OK, Feed already exists
1793          *                 1 - OK, Feed added
1794          *                 2 - Invalid URL
1795          *                 3 - URL content is HTML, no feeds available
1796          *                 4 - URL content is HTML which contains multiple feeds.
1797          *                     Here you should call extractfeedurls in rpc-backend
1798          *                     to get all possible feeds.
1799          *                 5 - Couldn't download the URL content.
1800          */
1801         function subscribe_to_feed($link, $url, $cat_id = 0,
1802                         $auth_login = '', $auth_pass = '', $need_auth = false) {
1803
1804                 global $fetch_last_error;
1805
1806                 require_once "include/rssfuncs.php";
1807
1808                 $url = fix_url($url);
1809
1810                 if (!$url || !validate_feed_url($url)) return array("code" => 2);
1811
1812                 $update_method = 0;
1813
1814                 $contents = @fetch_file_contents($url, false, $auth_login, $auth_pass);
1815
1816                 if (!$contents) {
1817                         return array("code" => 5, "message" => $fetch_last_error);
1818                 }
1819
1820                 if (is_html($contents)) {
1821                         $feedUrls = get_feeds_from_html($url, $contents);
1822
1823                         if (count($feedUrls) == 0) {
1824                                 return array("code" => 3);
1825                         } else if (count($feedUrls) > 1) {
1826                                 return array("code" => 4, "feeds" => $feedUrls);
1827                         }
1828                         //use feed url as new URL
1829                         $url = key($feedUrls);
1830                 }
1831
1832                 if ($cat_id == "0" || !$cat_id) {
1833                         $cat_qpart = "NULL";
1834                 } else {
1835                         $cat_qpart = "'$cat_id'";
1836                 }
1837
1838                 $result = db_query($link,
1839                         "SELECT id FROM ttrss_feeds
1840                         WHERE feed_url = '$url' AND owner_uid = ".$_SESSION["uid"]);
1841
1842                 if (db_num_rows($result) == 0) {
1843                         $result = db_query($link,
1844                                 "INSERT INTO ttrss_feeds
1845                                         (owner_uid,feed_url,title,cat_id, auth_login,auth_pass,update_method)
1846                                 VALUES ('".$_SESSION["uid"]."', '$url',
1847                                 '[Unknown]', $cat_qpart, '$auth_login', '$auth_pass', '$update_method')");
1848
1849                         $result = db_query($link,
1850                                 "SELECT id FROM ttrss_feeds WHERE feed_url = '$url'
1851                                         AND owner_uid = " . $_SESSION["uid"]);
1852
1853                         $feed_id = db_fetch_result($result, 0, "id");
1854
1855                         if ($feed_id) {
1856                                 update_rss_feed($link, $feed_id, true);
1857                         }
1858
1859                         return array("code" => 1);
1860                 } else {
1861                         return array("code" => 0);
1862                 }
1863         }
1864
1865         function print_feed_select($link, $id, $default_id = "",
1866                 $attributes = "", $include_all_feeds = true,
1867                 $root_id = false, $nest_level = 0) {
1868
1869                 if (!$root_id) {
1870                         print "<select id=\"$id\" name=\"$id\" $attributes>";
1871                         if ($include_all_feeds) {
1872                                 $is_selected = ("0" == $default_id) ? "selected=\"1\"" : "";
1873                                 print "<option $is_selected value=\"0\">".__('All feeds')."</option>";
1874                         }
1875                 }
1876
1877                 if (get_pref($link, 'ENABLE_FEED_CATS')) {
1878
1879                         if ($root_id)
1880                                 $parent_qpart = "parent_cat = '$root_id'";
1881                         else
1882                                 $parent_qpart = "parent_cat IS NULL";
1883
1884                         $result = db_query($link, "SELECT id,title,
1885                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1886                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1887                                 FROM ttrss_feed_categories
1888                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1889
1890                         while ($line = db_fetch_assoc($result)) {
1891
1892                                 for ($i = 0; $i < $nest_level; $i++)
1893                                         $line["title"] = " - " . $line["title"];
1894
1895                                 $is_selected = ("CAT:".$line["id"] == $default_id) ? "selected=\"1\"" : "";
1896
1897                                 printf("<option $is_selected value='CAT:%d'>%s</option>",
1898                                         $line["id"], htmlspecialchars($line["title"]));
1899
1900                                 if ($line["num_children"] > 0)
1901                                         print_feed_select($link, $id, $default_id, $attributes,
1902                                                 $include_all_feeds, $line["id"], $nest_level+1);
1903
1904                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1905                                         WHERE cat_id = '".$line["id"]."' AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1906
1907                                 while ($fline = db_fetch_assoc($feed_result)) {
1908                                         $is_selected = ($fline["id"] == $default_id) ? "selected=\"1\"" : "";
1909
1910                                         $fline["title"] = " + " . $fline["title"];
1911
1912                                         for ($i = 0; $i < $nest_level; $i++)
1913                                                 $fline["title"] = " - " . $fline["title"];
1914
1915                                         printf("<option $is_selected value='%d'>%s</option>",
1916                                                 $fline["id"], htmlspecialchars($fline["title"]));
1917                                 }
1918                         }
1919
1920                         if (!$root_id) {
1921                                 $is_selected = ($default_id == "CAT:0") ? "selected=\"1\"" : "";
1922
1923                                 printf("<option $is_selected value='CAT:0'>%s</option>",
1924                                         __("Uncategorized"));
1925
1926                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1927                                         WHERE cat_id IS NULL AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1928
1929                                 while ($fline = db_fetch_assoc($feed_result)) {
1930                                         $is_selected = ($fline["id"] == $default_id && !$default_is_cat) ? "selected=\"1\"" : "";
1931
1932                                         $fline["title"] = " + " . $fline["title"];
1933
1934                                         for ($i = 0; $i < $nest_level; $i++)
1935                                                 $fline["title"] = " - " . $fline["title"];
1936
1937                                         printf("<option $is_selected value='%d'>%s</option>",
1938                                                 $fline["id"], htmlspecialchars($fline["title"]));
1939                                 }
1940                         }
1941
1942                 } else {
1943                         $result = db_query($link, "SELECT id,title FROM ttrss_feeds
1944                                 WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
1945
1946                         while ($line = db_fetch_assoc($result)) {
1947
1948                                 $is_selected = ($line["id"] == $default_id) ? "selected=\"1\"" : "";
1949
1950                                 printf("<option $is_selected value='%d'>%s</option>",
1951                                         $line["id"], htmlspecialchars($line["title"]));
1952                         }
1953                 }
1954
1955                 if (!$root_id) {
1956                         print "</select>";
1957                 }
1958         }
1959
1960         function print_feed_cat_select($link, $id, $default_id,
1961                 $attributes, $include_all_cats = true, $root_id = false, $nest_level = 0) {
1962
1963                         if (!$root_id) {
1964                                         print "<select id=\"$id\" name=\"$id\" default=\"$default_id\" onchange=\"catSelectOnChange(this)\" $attributes>";
1965                         }
1966
1967                         if ($root_id)
1968                                 $parent_qpart = "parent_cat = '$root_id'";
1969                         else
1970                                 $parent_qpart = "parent_cat IS NULL";
1971
1972                         $result = db_query($link, "SELECT id,title,
1973                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1974                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1975                                 FROM ttrss_feed_categories
1976                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1977
1978                         while ($line = db_fetch_assoc($result)) {
1979                                 if ($line["id"] == $default_id) {
1980                                         $is_selected = "selected=\"1\"";
1981                                 } else {
1982                                         $is_selected = "";
1983                                 }
1984
1985                                 for ($i = 0; $i < $nest_level; $i++)
1986                                         $line["title"] = " - " . $line["title"];
1987
1988                                 if ($line["title"])
1989                                         printf("<option $is_selected value='%d'>%s</option>",
1990                                                 $line["id"], htmlspecialchars($line["title"]));
1991
1992                                 if ($line["num_children"] > 0)
1993                                         print_feed_cat_select($link, $id, $default_id, $attributes,
1994                                                 $include_all_cats, $line["id"], $nest_level+1);
1995                         }
1996
1997                         if (!$root_id) {
1998                                 if ($include_all_cats) {
1999                                         if (db_num_rows($result) > 0) {
2000                                                 print "<option disabled=\"1\">--------</option>";
2001                                         }
2002
2003                                         if ($default_id == 0) {
2004                                                 $is_selected = "selected=\"1\"";
2005                                         } else {
2006                                                 $is_selected = "";
2007                                         }
2008
2009                                         print "<option $is_selected value=\"0\">".__('Uncategorized')."</option>";
2010                                 }
2011                                 print "</select>";
2012                         }
2013                 }
2014
2015         function checkbox_to_sql_bool($val) {
2016                 return ($val == "on") ? "true" : "false";
2017         }
2018
2019         function getFeedCatTitle($link, $id) {
2020                 if ($id == -1) {
2021                         return __("Special");
2022                 } else if ($id < -10) {
2023                         return __("Labels");
2024                 } else if ($id > 0) {
2025                         $result = db_query($link, "SELECT ttrss_feed_categories.title
2026                                 FROM ttrss_feeds, ttrss_feed_categories WHERE ttrss_feeds.id = '$id' AND
2027                                         cat_id = ttrss_feed_categories.id");
2028                         if (db_num_rows($result) == 1) {
2029                                 return db_fetch_result($result, 0, "title");
2030                         } else {
2031                                 return __("Uncategorized");
2032                         }
2033                 } else {
2034                         return "getFeedCatTitle($id) failed";
2035                 }
2036
2037         }
2038
2039         function getFeedIcon($id) {
2040                 switch ($id) {
2041                 case 0:
2042                         return "images/archive.png";
2043                         break;
2044                 case -1:
2045                         return "images/mark_set.png";
2046                         break;
2047                 case -2:
2048                         return "images/pub_set.png";
2049                         break;
2050                 case -3:
2051                         return "images/fresh.png";
2052                         break;
2053                 case -4:
2054                         return "images/tag.png";
2055                         break;
2056                 case -6:
2057                         return "images/recently_read.png";
2058                         break;
2059                 default:
2060                         if ($id < -10) {
2061                                 return "images/label.png";
2062                         } else {
2063                                 if (file_exists(ICONS_DIR . "/$id.ico"))
2064                                         return ICONS_URL . "/$id.ico";
2065                         }
2066                         break;
2067                 }
2068         }
2069
2070         function getFeedTitle($link, $id, $cat = false) {
2071                 if ($cat) {
2072                         return getCategoryTitle($link, $id);
2073                 } else if ($id == -1) {
2074                         return __("Starred articles");
2075                 } else if ($id == -2) {
2076                         return __("Published articles");
2077                 } else if ($id == -3) {
2078                         return __("Fresh articles");
2079                 } else if ($id == -4) {
2080                         return __("All articles");
2081                 } else if ($id === 0 || $id === "0") {
2082                         return __("Archived articles");
2083                 } else if ($id == -6) {
2084                         return __("Recently read");
2085                 } else if ($id < -10) {
2086                         $label_id = -$id - 11;
2087                         $result = db_query($link, "SELECT caption FROM ttrss_labels2 WHERE id = '$label_id'");
2088                         if (db_num_rows($result) == 1) {
2089                                 return db_fetch_result($result, 0, "caption");
2090                         } else {
2091                                 return "Unknown label ($label_id)";
2092                         }
2093
2094                 } else if (is_numeric($id) && $id > 0) {
2095                         $result = db_query($link, "SELECT title FROM ttrss_feeds WHERE id = '$id'");
2096                         if (db_num_rows($result) == 1) {
2097                                 return db_fetch_result($result, 0, "title");
2098                         } else {
2099                                 return "Unknown feed ($id)";
2100                         }
2101                 } else {
2102                         return $id;
2103                 }
2104         }
2105
2106         function make_init_params($link) {
2107                 $params = array();
2108
2109                 $params["theme"] = get_user_theme($link);
2110                 $params["theme_options"] = get_user_theme_options($link);
2111
2112                 $params["sign_progress"] = theme_image($link, "images/indicator_white.gif");
2113                 $params["sign_progress_tiny"] = theme_image($link, "images/indicator_tiny.gif");
2114                 $params["sign_excl"] = theme_image($link, "images/sign_excl.png");
2115                 $params["sign_info"] = theme_image($link, "images/sign_info.png");
2116
2117                 foreach (array("ON_CATCHUP_SHOW_NEXT_FEED", "HIDE_READ_FEEDS",
2118                         "ENABLE_FEED_CATS", "FEEDS_SORT_BY_UNREAD", "CONFIRM_FEED_CATCHUP",
2119                         "CDM_AUTO_CATCHUP", "FRESH_ARTICLE_MAX_AGE", "DEFAULT_ARTICLE_LIMIT",
2120                         "HIDE_READ_SHOWS_SPECIAL", "COMBINED_DISPLAY_MODE") as $param) {
2121
2122                                  $params[strtolower($param)] = (int) get_pref($link, $param);
2123                  }
2124
2125                 $params["icons_url"] = ICONS_URL;
2126                 $params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
2127                 $params["default_include_children"] = get_pref($link, "_DEFAULT_INCLUDE_CHILDREN");
2128                 $params["default_view_mode"] = get_pref($link, "_DEFAULT_VIEW_MODE");
2129                 $params["default_view_limit"] = (int) get_pref($link, "_DEFAULT_VIEW_LIMIT");
2130                 $params["default_view_order_by"] = get_pref($link, "_DEFAULT_VIEW_ORDER_BY");
2131                 $params["bw_limit"] = (int) $_SESSION["bw_limit"];
2132
2133                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2134                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2135
2136                 $max_feed_id = db_fetch_result($result, 0, "mid");
2137                 $num_feeds = db_fetch_result($result, 0, "nf");
2138
2139                 $params["max_feed_id"] = (int) $max_feed_id;
2140                 $params["num_feeds"] = (int) $num_feeds;
2141
2142                 $params["collapsed_feedlist"] = (int) get_pref($link, "_COLLAPSED_FEEDLIST");
2143
2144                 $params["csrf_token"] = $_SESSION["csrf_token"];
2145
2146                 return $params;
2147         }
2148
2149         function make_runtime_info($link) {
2150                 $data = array();
2151
2152                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2153                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2154
2155                 $max_feed_id = db_fetch_result($result, 0, "mid");
2156                 $num_feeds = db_fetch_result($result, 0, "nf");
2157
2158                 $data["max_feed_id"] = (int) $max_feed_id;
2159                 $data["num_feeds"] = (int) $num_feeds;
2160
2161                 $data['last_article_id'] = getLastArticleId($link);
2162                 $data['cdm_expanded'] = get_pref($link, 'CDM_EXPANDED');
2163
2164                 if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
2165
2166                         $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
2167
2168                         if (time() - $_SESSION["daemon_stamp_check"] > 30) {
2169
2170                                 $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
2171
2172                                 if ($stamp) {
2173                                         $stamp_delta = time() - $stamp;
2174
2175                                         if ($stamp_delta > 1800) {
2176                                                 $stamp_check = 0;
2177                                         } else {
2178                                                 $stamp_check = 1;
2179                                                 $_SESSION["daemon_stamp_check"] = time();
2180                                         }
2181
2182                                         $data['daemon_stamp_ok'] = $stamp_check;
2183
2184                                         $stamp_fmt = date("Y.m.d, G:i", $stamp);
2185
2186                                         $data['daemon_stamp'] = $stamp_fmt;
2187                                 }
2188                         }
2189                 }
2190
2191                 if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
2192                                 $new_version_details = @check_for_update($link);
2193
2194                                 $data['new_version_available'] = (int) ($new_version_details != false);
2195
2196                                 $_SESSION["last_version_check"] = time();
2197                                 $_SESSION["version_data"] = $new_version_details;
2198                 }
2199
2200                 return $data;
2201         }
2202
2203         function search_to_sql($link, $search, $match_on) {
2204
2205                 $search_query_part = "";
2206
2207                 $keywords = explode(" ", $search);
2208                 $query_keywords = array();
2209
2210                 foreach ($keywords as $k) {
2211                         if (strpos($k, "-") === 0) {
2212                                 $k = substr($k, 1);
2213                                 $not = "NOT";
2214                         } else {
2215                                 $not = "";
2216                         }
2217
2218                         $commandpair = explode(":", mb_strtolower($k), 2);
2219
2220                         if ($commandpair[0] == "note" && $commandpair[1]) {
2221
2222                                 if ($commandpair[1] == "true")
2223                                         array_push($query_keywords, "($not (note IS NOT NULL AND note != ''))");
2224                                 else
2225                                         array_push($query_keywords, "($not (note IS NULL OR note = ''))");
2226
2227                         } else if ($commandpair[0] == "star" && $commandpair[1]) {
2228
2229                                 if ($commandpair[1] == "true")
2230                                         array_push($query_keywords, "($not (marked = true))");
2231                                 else
2232                                         array_push($query_keywords, "($not (marked = false))");
2233
2234                         } else if ($commandpair[0] == "pub" && $commandpair[1]) {
2235
2236                                 if ($commandpair[1] == "true")
2237                                         array_push($query_keywords, "($not (published = true))");
2238                                 else
2239                                         array_push($query_keywords, "($not (published = false))");
2240
2241                         } else if (strpos($k, "@") === 0) {
2242
2243                                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $_SESSION['uid']);
2244                                 $orig_ts = strtotime(substr($k, 1));
2245                                 $k = date("Y-m-d", convert_timestamp($orig_ts, $user_tz_string, 'UTC'));
2246
2247                                 //$k = date("Y-m-d", strtotime(substr($k, 1)));
2248
2249                                 array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
2250                         } else if ($match_on == "both") {
2251                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2252                                                 OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2253                         } else if ($match_on == "title") {
2254                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%'))");
2255                         } else if ($match_on == "content") {
2256                                 array_push($query_keywords, "(UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2257                         }
2258                 }
2259
2260                 $search_query_part = implode("AND", $query_keywords);
2261
2262                 return $search_query_part;
2263         }
2264
2265         function getChildCategories($link, $cat, $owner_uid) {
2266                 $rv = array();
2267
2268                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories
2269                         WHERE parent_cat = '$cat' AND owner_uid = $owner_uid");
2270
2271                 while ($line = db_fetch_assoc($result)) {
2272                         array_push($rv, $line["id"]);
2273                         $rv = array_merge($rv, getChildCategories($link, $line["id"], $owner_uid));
2274                 }
2275
2276                 return $rv;
2277         }
2278
2279         function queryFeedHeadlines($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, $include_children = false) {
2280
2281                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2282
2283                 $ext_tables_part = "";
2284
2285                         if ($search) {
2286
2287                                 if (SPHINX_ENABLED) {
2288                                         $ids = join(",", @sphinx_search($search, 0, 500));
2289
2290                                         if ($ids)
2291                                                 $search_query_part = "ref_id IN ($ids) AND ";
2292                                         else
2293                                                 $search_query_part = "ref_id = -1 AND ";
2294
2295                                 } else {
2296                                         $search_query_part = search_to_sql($link, $search, $match_on);
2297                                         $search_query_part .= " AND ";
2298                                 }
2299
2300                         } else {
2301                                 $search_query_part = "";
2302                         }
2303
2304                         if ($filter) {
2305
2306                                 if (DB_TYPE == "pgsql") {
2307                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '14 days' ";
2308                                 } else {
2309                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL 14 DAY) ";
2310                                 }
2311
2312                                 $override_order = "updated DESC";
2313
2314                                 $filter_query_part = filter_to_sql($filter) . " AND";
2315                         } else {
2316                                 $filter_query_part = "";
2317                         }
2318
2319                         if ($since_id) {
2320                                 $since_id_part = "ttrss_entries.id > $since_id AND ";
2321                         } else {
2322                                 $since_id_part = "";
2323                         }
2324
2325                         $view_query_part = "";
2326
2327                         if ($view_mode == "adaptive" || $view_query_part == "noscores") {
2328                                 if ($search) {
2329                                         $view_query_part = " ";
2330                                 } else if ($feed != -1) {
2331                                         $unread = getFeedUnread($link, $feed, $cat_view);
2332
2333                                         if ($cat_view && $feed > 0 && $include_children)
2334                                                 $unread += getCategoryChildrenUnread($link, $feed);
2335
2336                                         if ($unread > 0) {
2337                                                 $view_query_part = " unread = true AND ";
2338                                         }
2339                                 }
2340                         }
2341
2342                         if ($view_mode == "marked") {
2343                                 $view_query_part = " marked = true AND ";
2344                         }
2345
2346                         if ($view_mode == "published") {
2347                                 $view_query_part = " published = true AND ";
2348                         }
2349
2350                         if ($view_mode == "unread") {
2351                                 $view_query_part = " unread = true AND ";
2352                         }
2353
2354                         if ($view_mode == "updated") {
2355                                 $view_query_part = " (last_read is null and unread = false) AND ";
2356                         }
2357
2358                         if ($limit > 0) {
2359                                 $limit_query_part = "LIMIT " . $limit;
2360                         }
2361
2362                         $allow_archived = false;
2363
2364                         $vfeed_query_part = "";
2365
2366                         // override query strategy and enable feed display when searching globally
2367                         if ($search && $search_mode == "all_feeds") {
2368                                 $query_strategy_part = "true";
2369                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2370                         /* tags */
2371                         } else if (!is_numeric($feed)) {
2372                                 $query_strategy_part = "true";
2373                                 $vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
2374                                         id = feed_id) as feed_title,";
2375                         } else if ($search && $search_mode == "this_cat") {
2376                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2377
2378                                 if ($feed > 0) {
2379                                         if ($include_children) {
2380                                                 $subcats = getChildCategories($link, $feed, $owner_uid);
2381                                                 array_push($subcats, $feed);
2382                                                 $cats_qpart = join(",", $subcats);
2383                                         } else {
2384                                                 $cats_qpart = $feed;
2385                                         }
2386
2387                                         $query_strategy_part = "ttrss_feeds.cat_id IN ($cats_qpart)";
2388
2389                                 } else {
2390                                         $query_strategy_part = "ttrss_feeds.cat_id IS NULL";
2391                                 }
2392
2393                         } else if ($feed > 0) {
2394
2395                                 if ($cat_view) {
2396
2397                                         if ($feed > 0) {
2398                                                 if ($include_children) {
2399                                                         # sub-cats
2400                                                         $subcats = getChildCategories($link, $feed, $owner_uid);
2401
2402                                                         array_push($subcats, $feed);
2403                                                         $query_strategy_part = "cat_id IN (".
2404                                                                         implode(",", $subcats).")";
2405
2406                                                 } else {
2407                                                         $query_strategy_part = "cat_id = '$feed'";
2408                                                 }
2409
2410                                         } else {
2411                                                 $query_strategy_part = "cat_id IS NULL";
2412                                         }
2413
2414                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2415
2416                                 } else {
2417                                         $query_strategy_part = "feed_id = '$feed'";
2418                                 }
2419                         } else if ($feed == 0 && !$cat_view) { // archive virtual feed
2420                                 $query_strategy_part = "feed_id IS NULL";
2421                                 $allow_archived = true;
2422                         } else if ($feed == 0 && $cat_view) { // uncategorized
2423                                 $query_strategy_part = "cat_id IS NULL AND feed_id IS NOT NULL";
2424                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2425                         } else if ($feed == -1) { // starred virtual feed
2426                                 $query_strategy_part = "marked = true";
2427                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2428                         } else if ($feed == -2) { // published virtual feed OR labels category
2429
2430                                 if (!$cat_view) {
2431                                         $query_strategy_part = "published = true";
2432                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2433                                         $allow_archived = true;
2434
2435                                         if (!$override_order) $override_order = "last_read DESC, updated DESC";
2436                                 } else {
2437                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2438
2439                                         $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2440
2441                                         $query_strategy_part = "ttrss_labels2.id = ttrss_user_labels2.label_id AND
2442                                                 ttrss_user_labels2.article_id = ref_id";
2443
2444                                 }
2445                         } else if ($feed == -6) { // recently read
2446                                 $query_strategy_part = "unread = false AND last_read IS NOT NULL";
2447                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2448
2449                                 if (!$override_order) $override_order = "last_read DESC";
2450                         } else if ($feed == -3) { // fresh virtual feed
2451                                 $query_strategy_part = "unread = true AND score >= 0";
2452
2453                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
2454
2455                                 if (DB_TYPE == "pgsql") {
2456                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
2457                                 } else {
2458                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
2459                                 }
2460
2461                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2462                         } else if ($feed == -4) { // all articles virtual feed
2463                                 $query_strategy_part = "true";
2464                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2465                         } else if ($feed <= -10) { // labels
2466                                 $label_id = -$feed - 11;
2467
2468                                 $query_strategy_part = "label_id = '$label_id' AND
2469                                         ttrss_labels2.id = ttrss_user_labels2.label_id AND
2470                                         ttrss_user_labels2.article_id = ref_id";
2471
2472                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2473                                 $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2474
2475                         } else {
2476                                 $query_strategy_part = "id > 0"; // dumb
2477                         }
2478
2479                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
2480                                 $date_sort_field = "updated";
2481                         } else {
2482                                 $date_sort_field = "date_entered";
2483                         }
2484
2485                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
2486                                 $order_by = "$date_sort_field";
2487                         } else {
2488                                 $order_by = "$date_sort_field DESC";
2489                         }
2490
2491                         if ($view_mode != "noscores") {
2492                                 $order_by = "score DESC, $order_by";
2493                         }
2494
2495                         if ($override_order) {
2496                                 $order_by = $override_order;
2497                         }
2498
2499                         $feed_title = "";
2500
2501                         if ($search) {
2502                                 $feed_title = T_sprintf("Search results: %s", $search);
2503                         } else {
2504                                 if ($cat_view) {
2505                                         $feed_title = getCategoryTitle($link, $feed);
2506                                 } else {
2507                                         if (is_numeric($feed) && $feed > 0) {
2508                                                 $result = db_query($link, "SELECT title,site_url,last_error
2509                                                         FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = $owner_uid");
2510
2511                                                 $feed_title = db_fetch_result($result, 0, "title");
2512                                                 $feed_site_url = db_fetch_result($result, 0, "site_url");
2513                                                 $last_error = db_fetch_result($result, 0, "last_error");
2514                                         } else {
2515                                                 $feed_title = getFeedTitle($link, $feed);
2516                                         }
2517                                 }
2518                         }
2519
2520                         $content_query_part = "content as content_preview,";
2521
2522                         if (is_numeric($feed)) {
2523
2524                                 if ($feed >= 0) {
2525                                         $feed_kind = "Feeds";
2526                                 } else {
2527                                         $feed_kind = "Labels";
2528                                 }
2529
2530                                 if ($limit_query_part) {
2531                                         $offset_query_part = "OFFSET $offset";
2532                                 }
2533
2534                                 if ($vfeed_query_part && get_pref($link, 'VFEED_GROUP_BY_FEED', $owner_uid)) {
2535                                         if (!$override_order) {
2536                                                 $order_by = "ttrss_feeds.title, $order_by";
2537                                         }
2538                                 }
2539
2540                                 if (!$allow_archived) {
2541                                         $from_qpart = "ttrss_entries,ttrss_user_entries,ttrss_feeds$ext_tables_part";
2542                                         $feed_check_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
2543
2544                                 } else {
2545                                         $from_qpart = "ttrss_entries,ttrss_user_entries$ext_tables_part
2546                                                 LEFT JOIN ttrss_feeds ON (feed_id = ttrss_feeds.id)";
2547                                 }
2548
2549                                 $query = "SELECT DISTINCT
2550                                                 date_entered,
2551                                                 guid,
2552                                                 ttrss_entries.id,ttrss_entries.title,
2553                                                 updated,
2554                                                 label_cache,
2555                                                 tag_cache,
2556                                                 always_display_enclosures,
2557                                                 site_url,
2558                                                 note,
2559                                                 num_comments,
2560                                                 comments,
2561                                                 int_id,
2562                                                 unread,feed_id,marked,published,link,last_read,orig_feed_id,
2563                                                 ".SUBSTRING_FOR_DATE."(last_read,1,19) as last_read_noms,
2564                                                 $vfeed_query_part
2565                                                 $content_query_part
2566                                                 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated_noms,
2567                                                 author,score
2568                                         FROM
2569                                                 $from_qpart
2570                                         WHERE
2571                                         $feed_check_qpart
2572                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
2573                                         ttrss_user_entries.owner_uid = '$owner_uid' AND
2574                                         $search_query_part
2575                                         $filter_query_part
2576                                         $view_query_part
2577                                         $since_id_part
2578                                         $query_strategy_part ORDER BY $order_by
2579                                         $limit_query_part $offset_query_part";
2580
2581                                 if ($_REQUEST["debug"]) print $query;
2582
2583                                 $result = db_query($link, $query);
2584
2585                         } else {
2586                                 // browsing by tag
2587
2588                                 $select_qpart = "SELECT DISTINCT " .
2589                                                                 "date_entered," .
2590                                                                 "guid," .
2591                                                                 "note," .
2592                                                                 "ttrss_entries.id as id," .
2593                                                                 "title," .
2594                                                                 "updated," .
2595                                                                 "unread," .
2596                                                                 "feed_id," .
2597                                                                 "orig_feed_id," .
2598                                                                 "marked," .
2599                                                                 "num_comments, " .
2600                                                                 "comments, " .
2601                                                                 "tag_cache," .
2602                                                                 "label_cache," .
2603                                                                 "link," .
2604                                                                 "last_read," .
2605                                                                 SUBSTRING_FOR_DATE . "(last_read,1,19) as last_read_noms," .
2606                                                                 $since_id_part .
2607                                                                 $vfeed_query_part .
2608                                                                 $content_query_part .
2609                                                                 SUBSTRING_FOR_DATE . "(updated,1,19) as updated_noms," .
2610                                                                 "score ";
2611
2612                                 $feed_kind = "Tags";
2613                                 $all_tags = explode(",", $feed);
2614                                 if ($search_mode == 'any') {
2615                                         $tag_sql = "tag_name in (" . implode(", ", array_map("db_quote", $all_tags)) . ")";
2616                                         $from_qpart = " FROM ttrss_entries,ttrss_user_entries,ttrss_tags ";
2617                                         $where_qpart = " WHERE " .
2618                                                                    "ref_id = ttrss_entries.id AND " .
2619                                                                    "ttrss_user_entries.owner_uid = $owner_uid AND " .
2620                                                                    "post_int_id = int_id AND $tag_sql AND " .
2621                                                                    $view_query_part .
2622                                                                    $search_query_part .
2623                                                                    $query_strategy_part . " ORDER BY $order_by " .
2624                                                                    $limit_query_part;
2625
2626                                 } else {
2627                                         $i = 1;
2628                                         $sub_selects = array();
2629                                         $sub_ands = array();
2630                                         foreach ($all_tags as $term) {
2631                                                 array_push($sub_selects, "(SELECT post_int_id from ttrss_tags WHERE tag_name = " . db_quote($term) . " AND owner_uid = $owner_uid) as A$i");
2632                                                 $i++;
2633                                         }
2634                                         if ($i > 2) {
2635                                                 $x = 1;
2636                                                 $y = 2;
2637                                                 do {
2638                                                         array_push($sub_ands, "A$x.post_int_id = A$y.post_int_id");
2639                                                         $x++;
2640                                                         $y++;
2641                                                 } while ($y < $i);
2642                                         }
2643                                         array_push($sub_ands, "A1.post_int_id = ttrss_user_entries.int_id and ttrss_user_entries.owner_uid = $owner_uid");
2644                                         array_push($sub_ands, "ttrss_user_entries.ref_id = ttrss_entries.id");
2645                                         $from_qpart = " FROM " . implode(", ", $sub_selects) . ", ttrss_user_entries, ttrss_entries";
2646                                         $where_qpart = " WHERE " . implode(" AND ", $sub_ands);
2647                                 }
2648                                 //                              error_log("TAG SQL: " . $tag_sql);
2649                                 // $tag_sql = "tag_name = '$feed'";   DEFAULT way
2650
2651                                 //                              error_log("[". $select_qpart . "][" . $from_qpart . "][" .$where_qpart . "]");
2652                                 $result = db_query($link, $select_qpart . $from_qpart . $where_qpart);
2653                         }
2654
2655                         return array($result, $feed_title, $feed_site_url, $last_error);
2656
2657         }
2658
2659         function sanitize($link, $str, $force_strip_tags = false, $owner = false, $site_url = false) {
2660                 global $purifier;
2661
2662                 if (!$owner) $owner = $_SESSION["uid"];
2663
2664                 $res = trim($str); if (!$res) return '';
2665
2666                 // create global Purifier object if needed
2667                 if (!$purifier) {
2668                         require_once 'lib/htmlpurifier/library/HTMLPurifier.auto.php';
2669
2670                         $config = HTMLPurifier_Config::createDefault();
2671
2672                         $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]";
2673
2674                         $config->set('HTML.SafeObject', true);
2675                         @$config->set('HTML', 'Allowed', $allowed);
2676                         $config->set('Output.FlashCompat', true);
2677                         $config->set('Attr.EnableID', true);
2678                         if (!defined('MOBILE_VERSION')) {
2679                                 @$config->set('Cache', 'SerializerPath', CACHE_DIR . "/htmlpurifier");
2680                         } else {
2681                                 @$config->set('Cache', 'SerializerPath', "../" . CACHE_DIR . "/htmlpurifier");
2682                         }
2683
2684                         $config->set('Filter.YouTube', true);
2685
2686                         $purifier = new HTMLPurifier($config);
2687                 }
2688
2689                 $res = $purifier->purify($res);
2690
2691                 if (get_pref($link, "STRIP_IMAGES", $owner)) {
2692                         $res = preg_replace('/<img[^>]+>/is', '', $res);
2693                 }
2694
2695                 if (strpos($res, "href=") === false)
2696                         $res = rewrite_urls($res);
2697
2698                 $charset_hack = '<head>
2699                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
2700                 </head>';
2701
2702                 $res = trim($res); if (!$res) return '';
2703
2704                 libxml_use_internal_errors(true);
2705
2706                 $doc = new DOMDocument();
2707                 $doc->loadHTML($charset_hack . $res);
2708                 $xpath = new DOMXPath($doc);
2709
2710                 $entries = $xpath->query('(//a[@href]|//img[@src])');
2711                 $br_inserted = 0;
2712
2713                 foreach ($entries as $entry) {
2714
2715                         if ($site_url) {
2716
2717                                 if ($entry->hasAttribute('href'))
2718                                         $entry->setAttribute('href',
2719                                                 rewrite_relative_url($site_url, $entry->getAttribute('href')));
2720
2721                                 if ($entry->hasAttribute('src'))
2722                                         if (preg_match('/^image.php\?i=[a-z0-9]+$/', $entry->getAttribute('src')) == 0)
2723                                                 $entry->setAttribute('src',
2724                                                         rewrite_relative_url($site_url, $entry->getAttribute('src')));
2725                         }
2726
2727                         if (strtolower($entry->nodeName) == "a") {
2728                                 $entry->setAttribute("target", "_blank");
2729                         }
2730
2731                         if (strtolower($entry->nodeName) == "img" && !$br_inserted) {
2732                                 $br = $doc->createElement("br");
2733
2734                                 if ($entry->parentNode->nextSibling) {
2735                                         $entry->parentNode->insertBefore($br, $entry->nextSibling);
2736                                         $br_inserted = 1;
2737                                 }
2738
2739                         }
2740                 }
2741
2742                 $node = $doc->getElementsByTagName('body')->item(0);
2743
2744                 return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
2745         }
2746
2747         /**
2748          * Send by mail a digest of last articles.
2749          *
2750          * @param mixed $link The database connection.
2751          * @param integer $limit The maximum number of articles by digest.
2752          * @return boolean Return false if digests are not enabled.
2753          */
2754         function send_headlines_digests($link, $debug = false) {
2755
2756                 require_once 'lib/phpmailer/class.phpmailer.php';
2757
2758                 $user_limit = 15; // amount of users to process (e.g. emails to send out)
2759                 $limit = 1000; // maximum amount of headlines to include
2760
2761                 if ($debug) _debug("Sending digests, batch of max $user_limit users, headline limit = $limit");
2762
2763                 if (DB_TYPE == "pgsql") {
2764                         $interval_query = "last_digest_sent < NOW() - INTERVAL '1 days'";
2765                 } else if (DB_TYPE == "mysql") {
2766                         $interval_query = "last_digest_sent < DATE_SUB(NOW(), INTERVAL 1 DAY)";
2767                 }
2768
2769                 $result = db_query($link, "SELECT id,email FROM ttrss_users
2770                                 WHERE email != '' AND (last_digest_sent IS NULL OR $interval_query)");
2771
2772                 while ($line = db_fetch_assoc($result)) {
2773
2774                         if (get_pref($link, 'DIGEST_ENABLE', $line['id'], false)) {
2775                                 $preferred_ts = strtotime(get_pref($link, 'DIGEST_PREFERRED_TIME', $line['id'], '00:00'));
2776
2777                                 // try to send digests within 2 hours of preferred time
2778                                 if ($preferred_ts && time() >= $preferred_ts &&
2779                                                 time() - $preferred_ts <= 7200) {
2780
2781                                         if ($debug) print "Sending digest for UID:" . $line['id'] . " - " . $line["email"] . " ... ";
2782
2783                                         $do_catchup = get_pref($link, 'DIGEST_CATCHUP', $line['id'], false);
2784
2785                                         global $tz_offset;
2786
2787                                         // reset tz_offset global to prevent tz cache clash between users
2788                                         $tz_offset = -1;
2789
2790                                         $tuple = prepare_headlines_digest($link, $line["id"], 1, $limit);
2791                                         $digest = $tuple[0];
2792                                         $headlines_count = $tuple[1];
2793                                         $affected_ids = $tuple[2];
2794                                         $digest_text = $tuple[3];
2795
2796                                         if ($headlines_count > 0) {
2797
2798                                                 $mail = new PHPMailer();
2799
2800                                                 $mail->PluginDir = "lib/phpmailer/";
2801                                                 $mail->SetLanguage("en", "lib/phpmailer/language/");
2802
2803                                                 $mail->CharSet = "UTF-8";
2804
2805                                                 $mail->From = SMTP_FROM_ADDRESS;
2806                                                 $mail->FromName = SMTP_FROM_NAME;
2807                                                 $mail->AddAddress($line["email"], $line["login"]);
2808
2809                                                 if (SMTP_HOST) {
2810                                                         $mail->Host = SMTP_HOST;
2811                                                         $mail->Mailer = "smtp";
2812                                                         $mail->SMTPAuth = SMTP_LOGIN != '';
2813                                                         $mail->Username = SMTP_LOGIN;
2814                                                         $mail->Password = SMTP_PASSWORD;
2815                                                 }
2816
2817                                                 $mail->IsHTML(true);
2818                                                 $mail->Subject = DIGEST_SUBJECT;
2819                                                 $mail->Body = $digest;
2820                                                 $mail->AltBody = $digest_text;
2821
2822                                                 $rc = $mail->Send();
2823
2824                                                 if (!$rc && $debug) print "ERROR: " . $mail->ErrorInfo;
2825
2826                                                 if ($debug) print "RC=$rc\n";
2827
2828                                                 if ($rc && $do_catchup) {
2829                                                         if ($debug) print "Marking affected articles as read...\n";
2830                                                         catchupArticlesById($link, $affected_ids, 0, $line["id"]);
2831                                                 }
2832                                         } else {
2833                                                 if ($debug) print "No headlines\n";
2834                                         }
2835
2836                                         db_query($link, "UPDATE ttrss_users SET last_digest_sent = NOW()
2837                                                 WHERE id = " . $line["id"]);
2838
2839                                 }
2840                         }
2841                 }
2842
2843                 if ($debug) _debug("All done.");
2844
2845         }
2846
2847         function prepare_headlines_digest($link, $user_id, $days = 1, $limit = 1000) {
2848
2849                 require_once "lib/MiniTemplator.class.php";
2850
2851                 $tpl = new MiniTemplator;
2852                 $tpl_t = new MiniTemplator;
2853
2854                 $tpl->readTemplateFromFile("templates/digest_template_html.txt");
2855                 $tpl_t->readTemplateFromFile("templates/digest_template.txt");
2856
2857                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $user_id);
2858                 $local_ts = convert_timestamp(time(), 'UTC', $user_tz_string);
2859
2860                 $tpl->setVariable('CUR_DATE', date('Y/m/d', $local_ts));
2861                 $tpl->setVariable('CUR_TIME', date('G:i', $local_ts));
2862
2863                 $tpl_t->setVariable('CUR_DATE', date('Y/m/d', $local_ts));
2864                 $tpl_t->setVariable('CUR_TIME', date('G:i', $local_ts));
2865
2866                 $affected_ids = array();
2867
2868                 if (DB_TYPE == "pgsql") {
2869                         $interval_query = "ttrss_entries.date_updated > NOW() - INTERVAL '$days days'";
2870                 } else if (DB_TYPE == "mysql") {
2871                         $interval_query = "ttrss_entries.date_updated > DATE_SUB(NOW(), INTERVAL $days DAY)";
2872                 }
2873
2874                 $result = db_query($link, "SELECT ttrss_entries.title,
2875                                 ttrss_feeds.title AS feed_title,
2876                                 COALESCE(ttrss_feed_categories.title, '".__('Uncategorized')."') AS cat_title,
2877                                 date_updated,
2878                                 ttrss_user_entries.ref_id,
2879                                 link,
2880                                 score,
2881                                 content,
2882                                 ".SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
2883                         FROM
2884                                 ttrss_user_entries,ttrss_entries,ttrss_feeds
2885                         LEFT JOIN
2886                                 ttrss_feed_categories ON (cat_id = ttrss_feed_categories.id)
2887                         WHERE
2888                                 ref_id = ttrss_entries.id AND feed_id = ttrss_feeds.id
2889                                 AND include_in_digest = true
2890                                 AND $interval_query
2891                                 AND ttrss_user_entries.owner_uid = $user_id
2892                                 AND unread = true
2893                                 AND score >= 0
2894                         ORDER BY ttrss_feed_categories.title, ttrss_feeds.title, score DESC, date_updated DESC
2895                         LIMIT $limit");
2896
2897                 $cur_feed_title = "";
2898
2899                 $headlines_count = db_num_rows($result);
2900
2901                 $headlines = array();
2902
2903                 while ($line = db_fetch_assoc($result)) {
2904                         array_push($headlines, $line);
2905                 }
2906
2907                 for ($i = 0; $i < sizeof($headlines); $i++) {
2908
2909                         $line = $headlines[$i];
2910
2911                         array_push($affected_ids, $line["ref_id"]);
2912
2913                         $updated = make_local_datetime($link, $line['last_updated'], false,
2914                                 $user_id);
2915
2916 /*                      if ($line["score"] != 0) {
2917                                 if ($line["score"] > 0) $line["score"] = '+' . $line["score"];
2918
2919                                 $line["title"] .= " (".$line['score'].")";
2920                         } */
2921
2922                         if (get_pref($link, 'ENABLE_FEED_CATS', $user_id)) {
2923                                 $line['feed_title'] = $line['cat_title'] . " / " . $line['feed_title'];
2924                         }
2925
2926                         $tpl->setVariable('FEED_TITLE', $line["feed_title"]);
2927                         $tpl->setVariable('ARTICLE_TITLE', $line["title"]);
2928                         $tpl->setVariable('ARTICLE_LINK', $line["link"]);
2929                         $tpl->setVariable('ARTICLE_UPDATED', $updated);
2930                         $tpl->setVariable('ARTICLE_EXCERPT',
2931                                 truncate_string(strip_tags($line["content"]), 300));
2932 //                      $tpl->setVariable('ARTICLE_CONTENT',
2933 //                              strip_tags($article_content));
2934
2935                         $tpl->addBlock('article');
2936
2937                         $tpl_t->setVariable('FEED_TITLE', $line["feed_title"]);
2938                         $tpl_t->setVariable('ARTICLE_TITLE', $line["title"]);
2939                         $tpl_t->setVariable('ARTICLE_LINK', $line["link"]);
2940                         $tpl_t->setVariable('ARTICLE_UPDATED', $updated);
2941 //                      $tpl_t->setVariable('ARTICLE_EXCERPT',
2942 //                              truncate_string(strip_tags($line["excerpt"]), 100));
2943
2944                         $tpl_t->addBlock('article');
2945
2946                         if ($headlines[$i]['feed_title'] != $headlines[$i+1]['feed_title']) {
2947                                 $tpl->addBlock('feed');
2948                                 $tpl_t->addBlock('feed');
2949                         }
2950
2951                 }
2952
2953                 $tpl->addBlock('digest');
2954                 $tpl->generateOutputToString($tmp);
2955
2956                 $tpl_t->addBlock('digest');
2957                 $tpl_t->generateOutputToString($tmp_t);
2958
2959                 return array($tmp, $headlines_count, $affected_ids, $tmp_t);
2960         }
2961
2962         function check_for_update($link) {
2963                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2964                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION;
2965
2966                         $version_data = @fetch_file_contents($version_url);
2967
2968                         if ($version_data) {
2969                                 $version_data = json_decode($version_data, true);
2970                                 if ($version_data && $version_data['version']) {
2971
2972                                         if (version_compare(VERSION, $version_data['version']) == -1) {
2973                                                 return $version_data;
2974                                         }
2975                                 }
2976                         }
2977                 }
2978                 return false;
2979         }
2980
2981         function markArticlesById($link, $ids, $cmode) {
2982
2983                 $tmp_ids = array();
2984
2985                 foreach ($ids as $id) {
2986                         array_push($tmp_ids, "ref_id = '$id'");
2987                 }
2988
2989                 $ids_qpart = join(" OR ", $tmp_ids);
2990
2991                 if ($cmode == 0) {
2992                         db_query($link, "UPDATE ttrss_user_entries SET
2993                         marked = false,last_read = NOW()
2994                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2995                 } else if ($cmode == 1) {
2996                         db_query($link, "UPDATE ttrss_user_entries SET
2997                         marked = true
2998                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2999                 } else {
3000                         db_query($link, "UPDATE ttrss_user_entries SET
3001                         marked = NOT marked,last_read = NOW()
3002                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3003                 }
3004         }
3005
3006         function publishArticlesById($link, $ids, $cmode) {
3007
3008                 $tmp_ids = array();
3009
3010                 foreach ($ids as $id) {
3011                         array_push($tmp_ids, "ref_id = '$id'");
3012                 }
3013
3014                 $ids_qpart = join(" OR ", $tmp_ids);
3015
3016                 if ($cmode == 0) {
3017                         db_query($link, "UPDATE ttrss_user_entries SET
3018                         published = false,last_read = NOW()
3019                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3020                 } else if ($cmode == 1) {
3021                         db_query($link, "UPDATE ttrss_user_entries SET
3022                         published = true,last_read = NOW()
3023                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3024                 } else {
3025                         db_query($link, "UPDATE ttrss_user_entries SET
3026                         published = NOT published,last_read = NOW()
3027                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3028                 }
3029
3030                 if (PUBSUBHUBBUB_HUB) {
3031                         $rss_link = get_self_url_prefix() .
3032                                 "/public.php?op=rss&id=-2&key=" .
3033                                 get_feed_access_key($link, -2, false);
3034
3035                         $p = new Publisher(PUBSUBHUBBUB_HUB);
3036
3037                         $pubsub_result = $p->publish_update($rss_link);
3038                 }
3039         }
3040
3041         function catchupArticlesById($link, $ids, $cmode, $owner_uid = false) {
3042
3043                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3044                 if (count($ids) == 0) return;
3045
3046                 $tmp_ids = array();
3047
3048                 foreach ($ids as $id) {
3049                         array_push($tmp_ids, "ref_id = '$id'");
3050                 }
3051
3052                 $ids_qpart = join(" OR ", $tmp_ids);
3053
3054                 if ($cmode == 0) {
3055                         db_query($link, "UPDATE ttrss_user_entries SET
3056                         unread = false,last_read = NOW()
3057                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3058                 } else if ($cmode == 1) {
3059                         db_query($link, "UPDATE ttrss_user_entries SET
3060                         unread = true
3061                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3062                 } else {
3063                         db_query($link, "UPDATE ttrss_user_entries SET
3064                         unread = NOT unread,last_read = NOW()
3065                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3066                 }
3067
3068                 /* update ccache */
3069
3070                 $result = db_query($link, "SELECT DISTINCT feed_id FROM ttrss_user_entries
3071                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3072
3073                 while ($line = db_fetch_assoc($result)) {
3074                         ccache_update($link, $line["feed_id"], $owner_uid);
3075                 }
3076         }
3077
3078         function catchupArticleById($link, $id, $cmode) {
3079
3080                 if ($cmode == 0) {
3081                         db_query($link, "UPDATE ttrss_user_entries SET
3082                         unread = false,last_read = NOW()
3083                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3084                 } else if ($cmode == 1) {
3085                         db_query($link, "UPDATE ttrss_user_entries SET
3086                         unread = true
3087                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3088                 } else {
3089                         db_query($link, "UPDATE ttrss_user_entries SET
3090                         unread = NOT unread,last_read = NOW()
3091                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3092                 }
3093
3094                 $feed_id = getArticleFeed($link, $id);
3095                 ccache_update($link, $feed_id, $_SESSION["uid"]);
3096         }
3097
3098         function make_guid_from_title($title) {
3099                 return preg_replace("/[ \"\',.:;]/", "-",
3100                         mb_strtolower(strip_tags($title), 'utf-8'));
3101         }
3102
3103         function get_article_tags($link, $id, $owner_uid = 0, $tag_cache = false) {
3104
3105                 $a_id = db_escape_string($id);
3106
3107                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3108
3109                 $query = "SELECT DISTINCT tag_name,
3110                         owner_uid as owner FROM
3111                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
3112                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
3113
3114                 $obj_id = md5("TAGS:$owner_uid:$id");
3115                 $tags = array();
3116
3117                 /* check cache first */
3118
3119                 if ($tag_cache === false) {
3120                         $result = db_query($link, "SELECT tag_cache FROM ttrss_user_entries
3121                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
3122
3123                         $tag_cache = db_fetch_result($result, 0, "tag_cache");
3124                 }
3125
3126                 if ($tag_cache) {
3127                         $tags = explode(",", $tag_cache);
3128                 } else {
3129
3130                         /* do it the hard way */
3131
3132                         $tmp_result = db_query($link, $query);
3133
3134                         while ($tmp_line = db_fetch_assoc($tmp_result)) {
3135                                 array_push($tags, $tmp_line["tag_name"]);
3136                         }
3137
3138                         /* update the cache */
3139
3140                         $tags_str = db_escape_string(join(",", $tags));
3141
3142                         db_query($link, "UPDATE ttrss_user_entries
3143                                 SET tag_cache = '$tags_str' WHERE ref_id = '$id'
3144                                 AND owner_uid = $owner_uid");
3145                 }
3146
3147                 return $tags;
3148         }
3149
3150         function trim_array($array) {
3151                 $tmp = $array;
3152                 array_walk($tmp, 'trim');
3153                 return $tmp;
3154         }
3155
3156         function tag_is_valid($tag) {
3157                 if ($tag == '') return false;
3158                 if (preg_match("/^[0-9]*$/", $tag)) return false;
3159                 if (mb_strlen($tag) > 250) return false;
3160
3161                 if (function_exists('iconv')) {
3162                         $tag = iconv("utf-8", "utf-8", $tag);
3163                 }
3164
3165                 if (!$tag) return false;
3166
3167                 return true;
3168         }
3169
3170         function render_login_form($link, $form_id = 0) {
3171                 switch ($form_id) {
3172                 case 0:
3173                         require_once "login_form.php";
3174                         break;
3175                 case 1:
3176                         require_once "mobile/login_form.php";
3177                         break;
3178                 }
3179                 exit;
3180         }
3181
3182         // from http://developer.apple.com/internet/safari/faq.html
3183         function no_cache_incantation() {
3184                 header("Expires: Mon, 22 Dec 1980 00:00:00 GMT"); // Happy birthday to me :)
3185                 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
3186                 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); // HTTP/1.1
3187                 header("Cache-Control: post-check=0, pre-check=0", false);
3188                 header("Pragma: no-cache"); // HTTP/1.0
3189         }
3190
3191         function format_warning($msg, $id = "") {
3192                 global $link;
3193                 return "<div class=\"warning\" id=\"$id\">
3194                         <img src=\"".theme_image($link, "images/sign_excl.png")."\">$msg</div>";
3195         }
3196
3197         function format_notice($msg, $id = "") {
3198                 global $link;
3199                 return "<div class=\"notice\" id=\"$id\">
3200                         <img src=\"".theme_image($link, "images/sign_info.png")."\">$msg</div>";
3201         }
3202
3203         function format_error($msg, $id = "") {
3204                 global $link;
3205                 return "<div class=\"error\" id=\"$id\">
3206                         <img src=\"".theme_image($link, "images/sign_excl.png")."\">$msg</div>";
3207         }
3208
3209         function print_notice($msg) {
3210                 return print format_notice($msg);
3211         }
3212
3213         function print_warning($msg) {
3214                 return print format_warning($msg);
3215         }
3216
3217         function print_error($msg) {
3218                 return print format_error($msg);
3219         }
3220
3221
3222         function T_sprintf() {
3223                 $args = func_get_args();
3224                 return vsprintf(__(array_shift($args)), $args);
3225         }
3226
3227         function format_inline_player($link, $url, $ctype) {
3228
3229                 $entry = "";
3230
3231                 if (strpos($ctype, "audio/") === 0) {
3232
3233                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
3234                                 strpos($_SERVER['HTTP_USER_AGENT'], "Chrome") !== false ||
3235                                 strpos($_SERVER['HTTP_USER_AGENT'], "Safari") !== false )) {
3236
3237                                 $id = 'AUDIO-' . uniqid();
3238
3239                                 $entry .= "<audio id=\"$id\"\">
3240                                         <source src=\"$url\"></source>
3241                                         </audio>";
3242
3243                                 $entry .= "<span onclick=\"player(this)\"
3244                                         title=\"".__("Click to play")."\" status=\"0\"
3245                                         class=\"player\" audio-id=\"$id\">".__("Play")."</span>";
3246
3247                         } else {
3248
3249                                 $entry .= "<object type=\"application/x-shockwave-flash\"
3250                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
3251                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
3252                                         <param name=\"movie\"
3253                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
3254                                         </object>";
3255                         }
3256                 }
3257
3258                 $filename = substr($url, strrpos($url, "/")+1);
3259
3260                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3261                         $filename . " (" . $ctype . ")" . "</a>";
3262
3263                 return $entry;
3264         }
3265
3266         function format_article($link, $id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
3267                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3268
3269                 $rv = array();
3270
3271                 $rv['id'] = $id;
3272
3273                 /* we can figure out feed_id from article id anyway, why do we
3274                  * pass feed_id here? let's ignore the argument :( */
3275
3276                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3277                         WHERE ref_id = '$id'");
3278
3279                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
3280
3281                 $rv['feed_id'] = $feed_id;
3282
3283                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
3284
3285                 $result = db_query($link, "SELECT rtl_content, always_display_enclosures FROM ttrss_feeds
3286                         WHERE id = '$feed_id' AND owner_uid = $owner_uid");
3287
3288                 if (db_num_rows($result) == 1) {
3289                         $rtl_content = sql_bool_to_bool(db_fetch_result($result, 0, "rtl_content"));
3290                         $always_display_enclosures = sql_bool_to_bool(db_fetch_result($result, 0, "always_display_enclosures"));
3291                 } else {
3292                         $rtl_content = false;
3293                         $always_display_enclosures = false;
3294                 }
3295
3296                 if ($rtl_content) {
3297                         $rtl_tag = "dir=\"RTL\"";
3298                         $rtl_class = "RTL";
3299                 } else {
3300                         $rtl_tag = "";
3301                         $rtl_class = "";
3302                 }
3303
3304                 if ($mark_as_read) {
3305                         $result = db_query($link, "UPDATE ttrss_user_entries
3306                                 SET unread = false,last_read = NOW()
3307                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
3308
3309                         ccache_update($link, $feed_id, $owner_uid);
3310                 }
3311
3312                 $result = db_query($link, "SELECT title,link,content,feed_id,comments,int_id,
3313                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
3314                         (SELECT icon_url FROM ttrss_feeds WHERE id = feed_id) as icon_url,
3315                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
3316                         num_comments,
3317                         tag_cache,
3318                         author,
3319                         orig_feed_id,
3320                         note
3321                         FROM ttrss_entries,ttrss_user_entries
3322                         WHERE   id = '$id' AND ref_id = id AND owner_uid = $owner_uid");
3323
3324                 if ($result) {
3325
3326                         $line = db_fetch_assoc($result);
3327
3328                         if ($line["icon_url"]) {
3329                                 $feed_icon = "<img src=\"" . $line["icon_url"] . "\">";
3330                         } else {
3331                                 $feed_icon = "&nbsp;";
3332                         }
3333
3334                         $feed_site_url = $line['site_url'];
3335
3336                         $num_comments = $line["num_comments"];
3337                         $entry_comments = "";
3338
3339                         if ($num_comments > 0) {
3340                                 if ($line["comments"]) {
3341                                         $comments_url = $line["comments"];
3342                                 } else {
3343                                         $comments_url = $line["link"];
3344                                 }
3345                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
3346                         } else {
3347                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
3348                                         $entry_comments = "<a target='_blank' href=\"".$line["comments"]."\">comments</a>";
3349                                 }
3350                         }
3351
3352                         if ($zoom_mode) {
3353                                 header("Content-Type: text/html");
3354                                 $rv['content'] .= "<html><head>
3355                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
3356                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
3357                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
3358                                         </head><body>";
3359                         }
3360
3361                         $title_escaped = db_escape_string($line['title']);
3362
3363                         $rv['content'] .= "<div id=\"PTITLE-$id\" style=\"display : none\">" .
3364                                 truncate_string(strip_tags($line['title']), 15) . "</div>";
3365
3366                         $rv['content'] .= "<div id=\"PTITLE-FULL-$id\" style=\"display : none\">" .
3367                                 strip_tags($line['title']) . "</div>";
3368
3369                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
3370
3371                         $rv['content'] .= "<div onclick=\"return postClicked(event, $id)\"
3372                                 class=\"postHeader\" id=\"POSTHDR-$id\">";
3373
3374                         $entry_author = $line["author"];
3375
3376                         if ($entry_author) {
3377                                 $entry_author = __(" - ") . $entry_author;
3378                         }
3379
3380                         $parsed_updated = make_local_datetime($link, $line["updated"], true,
3381                                 $owner_uid, true);
3382
3383                         $rv['content'] .= "<div class=\"postDate$rtl_class\">$parsed_updated</div>";
3384
3385                         if ($line["link"]) {
3386                                 $rv['content'] .= "<div class='postTitle'><a target='_blank'
3387                                         title=\"".htmlspecialchars($line['title'])."\"
3388                                         href=\"" .
3389                                         $line["link"] . "\">" .
3390                                         $line["title"] .
3391                                         "<span class='author'>$entry_author</span></a></div>";
3392                         } else {
3393                                 $rv['content'] .= "<div class='postTitle'>" . $line["title"] . "$entry_author</div>";
3394                         }
3395
3396                         $tag_cache = $line["tag_cache"];
3397
3398                         if (!$tag_cache)
3399                                 $tags = get_article_tags($link, $id, $owner_uid);
3400                         else
3401                                 $tags = explode(",", $tag_cache);
3402
3403                         $tags_str = format_tags_string($tags, $id);
3404                         $tags_str_full = join(", ", $tags);
3405
3406                         if (!$tags_str_full) $tags_str_full = __("no tags");
3407
3408                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
3409
3410                         $rv['content'] .= "<div class='postTags' style='float : right'>
3411                                 <img src='".theme_image($link, 'images/tag.png')."'
3412                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
3413
3414                         if (!$zoom_mode) {
3415                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
3416                                         <a title=\"".__('Edit tags for this article')."\"
3417                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
3418
3419                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
3420                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
3421                                         position=\"below\">$tags_str_full</div>";
3422
3423                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/art-zoom.png')."\"
3424                                                 class='tagsPic' style=\"cursor : pointer\"
3425                                                 onclick=\"postOpenInNewTab(event, $id)\"
3426                                                 alt='Zoom' title='".__('Open article in new tab')."'>";
3427
3428                                 $button_plugins = explode(",", ARTICLE_BUTTON_PLUGINS);
3429
3430                                 foreach ($button_plugins as $p) {
3431                                         $pclass = trim("button_${p}");
3432
3433                                         if (class_exists($pclass)) {
3434                                                 $plugin = new $pclass($link);
3435                                                 $rv['content'] .= $plugin->render($id, $line);
3436                                         }
3437                                 }
3438
3439                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/digest_checkbox.png')."\"
3440                                                 class='tagsPic' style=\"cursor : pointer\"
3441                                                 onclick=\"closeArticlePanel($id)\"
3442                                                 title='".__('Close article')."'>";
3443
3444                         } else {
3445                                 $tags_str = strip_tags($tags_str);
3446                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
3447                         }
3448                         $rv['content'] .= "</div>";
3449                         $rv['content'] .= "<div clear='both'>$entry_comments</div>";
3450
3451                         if ($line["orig_feed_id"]) {
3452
3453                                 $tmp_result = db_query($link, "SELECT * FROM ttrss_archived_feeds
3454                                         WHERE id = ".$line["orig_feed_id"]);
3455
3456                                 if (db_num_rows($tmp_result) != 0) {
3457
3458                                         $rv['content'] .= "<div clear='both'>";
3459                                         $rv['content'] .= __("Originally from:");
3460
3461                                         $rv['content'] .= "&nbsp;";
3462
3463                                         $tmp_line = db_fetch_assoc($tmp_result);
3464
3465                                         $rv['content'] .= "<a target='_blank'
3466                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
3467                                                 $tmp_line['title'] . "</a>";
3468
3469                                         $rv['content'] .= "&nbsp;";
3470
3471                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3472                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.png'></a>";
3473
3474                                         $rv['content'] .= "</div>";
3475                                 }
3476                         }
3477
3478                         $rv['content'] .= "</div>";
3479
3480                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3481                                 if ($line['note']) {
3482                                         $rv['content'] .= format_article_note($id, $line['note']);
3483                                 }
3484                         $rv['content'] .= "</div>";
3485
3486                         $rv['content'] .= "<div class=\"postIcon\">" .
3487                                 "<a target=\"_blank\" title=\"".__("Visit the website")."\"$
3488                                 href=\"".htmlspecialchars($feed_site_url)."\">".
3489                                 $feed_icon . "</a></div>";
3490
3491                         $rv['content'] .= "<div class=\"postContent\">";
3492
3493                         // N-grams
3494
3495                         if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_RELATED_THRESHOLD')) {
3496
3497                                 $ngram_result = db_query($link, "SELECT id,title FROM
3498                                                 ttrss_entries,ttrss_user_entries
3499                                         WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
3500                                                 AND similarity(title, '$title_escaped') >= "._NGRAM_TITLE_RELATED_THRESHOLD."
3501                                                 AND title != '$title_escaped'
3502                                                 AND owner_uid = $owner_uid");
3503
3504                                 if (db_num_rows($ngram_result) > 0) {
3505                                         $rv['content'] .= "<div dojoType=\"dijit.form.DropDownButton\">".
3506                                                 "<span>" . __('Related')."</span>";
3507                                         $rv['content'] .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3508
3509                                         while ($nline = db_fetch_assoc($ngram_result)) {
3510                                                 $rv['content'] .= "<div onclick=\"hlOpenInNewTab(null,".$nline['id'].")\"
3511                                                         dojoType=\"dijit.MenuItem\">".$nline['title']."</div>";
3512
3513                                         }
3514                                         $rv['content'] .= "</div></div><br/";
3515                                 }
3516                         }
3517
3518                         $article_content = sanitize($link, $line["content"], false, $owner_uid,
3519                                 $feed_site_url);
3520
3521                         $rv['content'] .= $article_content;
3522
3523                         $rv['content'] .= format_article_enclosures($link, $id,
3524                                 $always_display_enclosures, $article_content);
3525
3526                         $rv['content'] .= "</div>";
3527
3528                         $rv['content'] .= "</div>";
3529
3530                 }
3531
3532                 if ($zoom_mode) {
3533                         $rv['content'] .= "
3534                                 <div style=\"text-align : center\">
3535                                 <button onclick=\"return window.close()\">".
3536                                         __("Close this window")."</button></div>";
3537                         $rv['content'] .= "</body></html>";
3538                 }
3539
3540                 return $rv;
3541
3542         }
3543
3544         function print_checkpoint($n, $s) {
3545                 $ts = getmicrotime();
3546                 echo sprintf("<!-- CP[$n] %.4f seconds -->", $ts - $s);
3547                 return $ts;
3548         }
3549
3550         function sanitize_tag($tag) {
3551                 $tag = trim($tag);
3552
3553                 $tag = mb_strtolower($tag, 'utf-8');
3554
3555                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3556
3557 //              $tag = str_replace('"', "", $tag);
3558 //              $tag = str_replace("+", " ", $tag);
3559                 $tag = str_replace("technorati tag: ", "", $tag);
3560
3561                 return $tag;
3562         }
3563
3564         function get_self_url_prefix() {
3565                 return SELF_URL_PATH;
3566         }
3567
3568         function opml_publish_url($link){
3569
3570                 $url_path = get_self_url_prefix();
3571                 $url_path .= "/opml.php?op=publish&key=" .
3572                         get_feed_access_key($link, 'OPML:Publish', false, $_SESSION["uid"]);
3573
3574                 return $url_path;
3575         }
3576
3577         /**
3578          * Purge a feed contents, marked articles excepted.
3579          *
3580          * @param mixed $link The database connection.
3581          * @param integer $id The id of the feed to purge.
3582          * @return void
3583          */
3584         function clear_feed_articles($link, $id) {
3585
3586                 if ($id != 0) {
3587                         $result = db_query($link, "DELETE FROM ttrss_user_entries
3588                         WHERE feed_id = '$id' AND marked = false AND owner_uid = " . $_SESSION["uid"]);
3589                 } else {
3590                         $result = db_query($link, "DELETE FROM ttrss_user_entries
3591                         WHERE feed_id IS NULL AND marked = false AND owner_uid = " . $_SESSION["uid"]);
3592                 }
3593
3594                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
3595                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
3596
3597                 ccache_update($link, $id, $_SESSION['uid']);
3598         } // function clear_feed_articles
3599
3600         /**
3601          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3602          *
3603          * @return string The Mozilla Firefox feed adding URL.
3604          */
3605         function add_feed_url() {
3606                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3607
3608                 $url_path = get_self_url_prefix() .
3609                         "/public.php?op=subscribe&feed_url=%s";
3610                 return $url_path;
3611         } // function add_feed_url
3612
3613         function encrypt_password($pass, $salt = '', $mode2 = false) {
3614                 if ($salt && $mode2) {
3615                         return "MODE2:" . hash('sha256', $salt . $pass);
3616                 } else if ($salt) {
3617                         return "SHA1X:" . sha1("$salt:$pass");
3618                 } else {
3619                         return "SHA1:" . sha1($pass);
3620                 }
3621         } // function encrypt_password
3622
3623         function sanitize_article_content($text) {
3624                 # we don't support CDATA sections in articles, they break our own escaping
3625                 $text = preg_replace("/\[\[CDATA/", "", $text);
3626                 $text = preg_replace("/\]\]\>/", "", $text);
3627                 return $text;
3628         }
3629
3630         function load_filters($link, $feed_id, $owner_uid, $action_id = false) {
3631                 $filters = array();
3632
3633                 $cat_id = (int)getFeedCategory($link, $feed_id);
3634
3635                 $result = db_query($link, "SELECT * FROM ttrss_filters2 WHERE
3636                         owner_uid = $owner_uid AND enabled = true");
3637
3638                 while ($line = db_fetch_assoc($result)) {
3639                         $filter_id = $line["id"];
3640
3641                         $result2 = db_query($link, "SELECT
3642                                 r.reg_exp, r.feed_id, r.cat_id, r.cat_filter, t.name AS type_name
3643                                 FROM ttrss_filters2_rules AS r,
3644                                 ttrss_filter_types AS t
3645                                 WHERE
3646                                         (cat_id IS NULL OR cat_id = '$cat_id') AND
3647                                         (feed_id IS NULL OR feed_id = '$feed_id') AND
3648                                         filter_type = t.id AND filter_id = '$filter_id'");
3649
3650                         $rules = array();
3651                         $actions = array();
3652
3653                         while ($rule_line = db_fetch_assoc($result2)) {
3654 #                               print_r($rule_line);
3655
3656                                 $rule = array();
3657                                 $rule["reg_exp"] = $rule_line["reg_exp"];
3658                                 $rule["type"] = $rule_line["type_name"];
3659
3660                                 array_push($rules, $rule);
3661                         }
3662
3663                         $result2 = db_query($link, "SELECT a.action_param,t.name AS type_name
3664                                 FROM ttrss_filters2_actions AS a,
3665                                 ttrss_filter_actions AS t
3666                                 WHERE
3667                                         action_id = t.id AND filter_id = '$filter_id'");
3668
3669                         while ($action_line = db_fetch_assoc($result2)) {
3670 #                               print_r($action_line);
3671
3672                                 $action = array();
3673                                 $action["type"] = $action_line["type_name"];
3674                                 $action["param"] = $action_line["action_param"];
3675
3676                                 array_push($actions, $action);
3677                         }
3678
3679
3680                         $filter = array();
3681                         $filter["match_any_rule"] = sql_bool_to_bool($line["match_any_rule"]);
3682                         $filter["rules"] = $rules;
3683                         $filter["actions"] = $actions;
3684
3685                         if (count($rules) > 0 && count($actions) > 0) {
3686                                 array_push($filters, $filter);
3687                         }
3688                 }
3689
3690                 return $filters;
3691         }
3692
3693         function get_score_pic($score) {
3694                 if ($score > 100) {
3695                         return "score_high.png";
3696                 } else if ($score > 0) {
3697                         return "score_half_high.png";
3698                 } else if ($score < -100) {
3699                         return "score_low.png";
3700                 } else if ($score < 0) {
3701                         return "score_half_low.png";
3702                 } else {
3703                         return "score_neutral.png";
3704                 }
3705         }
3706
3707         function feed_has_icon($id) {
3708                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3709         }
3710
3711         function init_connection($link) {
3712                 if ($link) {
3713
3714                         if (DB_TYPE == "pgsql") {
3715                                 pg_query($link, "set client_encoding = 'UTF-8'");
3716                                 pg_set_client_encoding("UNICODE");
3717                                 pg_query($link, "set datestyle = 'ISO, european'");
3718                                 pg_query($link, "set TIME ZONE 0");
3719                         } else {
3720                                 db_query($link, "SET time_zone = '+0:0'");
3721
3722                                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
3723                                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
3724                                 }
3725                         }
3726                         return true;
3727                 } else {
3728                         print "Unable to connect to database:" . db_last_error();
3729                         return false;
3730                 }
3731         }
3732
3733         /* function ccache_zero($link, $feed_id, $owner_uid) {
3734                 db_query($link, "UPDATE ttrss_counters_cache SET
3735                         value = 0, updated = NOW() WHERE
3736                         feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3737         } */
3738
3739         function ccache_zero_all($link, $owner_uid) {
3740                 db_query($link, "UPDATE ttrss_counters_cache SET
3741                         value = 0 WHERE owner_uid = '$owner_uid'");
3742
3743                 db_query($link, "UPDATE ttrss_cat_counters_cache SET
3744                         value = 0 WHERE owner_uid = '$owner_uid'");
3745         }
3746
3747         function ccache_remove($link, $feed_id, $owner_uid, $is_cat = false) {
3748
3749                 if (!$is_cat) {
3750                         $table = "ttrss_counters_cache";
3751                 } else {
3752                         $table = "ttrss_cat_counters_cache";
3753                 }
3754
3755                 db_query($link, "DELETE FROM $table WHERE
3756                         feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3757
3758         }
3759
3760         function ccache_update_all($link, $owner_uid) {
3761
3762                 if (get_pref($link, 'ENABLE_FEED_CATS', $owner_uid)) {
3763
3764                         $result = db_query($link, "SELECT feed_id FROM ttrss_cat_counters_cache
3765                                 WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
3766
3767                         while ($line = db_fetch_assoc($result)) {
3768                                 ccache_update($link, $line["feed_id"], $owner_uid, true);
3769                         }
3770
3771                         /* We have to manually include category 0 */
3772
3773                         ccache_update($link, 0, $owner_uid, true);
3774
3775                 } else {
3776                         $result = db_query($link, "SELECT feed_id FROM ttrss_counters_cache
3777                                 WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
3778
3779                         while ($line = db_fetch_assoc($result)) {
3780                                 print ccache_update($link, $line["feed_id"], $owner_uid);
3781
3782                         }
3783
3784                 }
3785         }
3786
3787         function ccache_find($link, $feed_id, $owner_uid, $is_cat = false,
3788                 $no_update = false) {
3789
3790                 if (!is_numeric($feed_id)) return;
3791
3792                 if (!$is_cat) {
3793                         $table = "ttrss_counters_cache";
3794                         if ($feed_id > 0) {
3795                                 $tmp_result = db_query($link, "SELECT owner_uid FROM ttrss_feeds
3796                                         WHERE id = '$feed_id'");
3797                                 $owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
3798                         }
3799                 } else {
3800                         $table = "ttrss_cat_counters_cache";
3801                 }
3802
3803                 if (DB_TYPE == "pgsql") {
3804                         $date_qpart = "updated > NOW() - INTERVAL '15 minutes'";
3805                 } else if (DB_TYPE == "mysql") {
3806                         $date_qpart = "updated > DATE_SUB(NOW(), INTERVAL 15 MINUTE)";
3807                 }
3808
3809                 $result = db_query($link, "SELECT value FROM $table
3810                         WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id'
3811                         LIMIT 1");
3812
3813                 if (db_num_rows($result) == 1) {
3814                         return db_fetch_result($result, 0, "value");
3815                 } else {
3816                         if ($no_update) {
3817                                 return -1;
3818                         } else {
3819                                 return ccache_update($link, $feed_id, $owner_uid, $is_cat);
3820                         }
3821                 }
3822
3823         }
3824
3825         function ccache_update($link, $feed_id, $owner_uid, $is_cat = false,
3826                 $update_pcat = true) {
3827
3828                 if (!is_numeric($feed_id)) return;
3829
3830                 if (!$is_cat && $feed_id > 0) {
3831                         $tmp_result = db_query($link, "SELECT owner_uid FROM ttrss_feeds
3832                                 WHERE id = '$feed_id'");
3833                         $owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
3834                 }
3835
3836                 $prev_unread = ccache_find($link, $feed_id, $owner_uid, $is_cat, true);
3837
3838                 /* When updating a label, all we need to do is recalculate feed counters
3839                  * because labels are not cached */
3840
3841                 if ($feed_id < 0) {
3842                         ccache_update_all($link, $owner_uid);
3843                         return;
3844                 }
3845
3846                 if (!$is_cat) {
3847                         $table = "ttrss_counters_cache";
3848                 } else {
3849                         $table = "ttrss_cat_counters_cache";
3850                 }
3851
3852                 if ($is_cat && $feed_id >= 0) {
3853                         if ($feed_id != 0) {
3854                                 $cat_qpart = "cat_id = '$feed_id'";
3855                         } else {
3856                                 $cat_qpart = "cat_id IS NULL";
3857                         }
3858
3859                         /* Recalculate counters for child feeds */
3860
3861                         $result = db_query($link, "SELECT id FROM ttrss_feeds
3862                                                 WHERE owner_uid = '$owner_uid' AND $cat_qpart");
3863
3864                         while ($line = db_fetch_assoc($result)) {
3865                                 ccache_update($link, $line["id"], $owner_uid, false, false);
3866                         }
3867
3868                         $result = db_query($link, "SELECT SUM(value) AS sv
3869                                 FROM ttrss_counters_cache, ttrss_feeds
3870                                 WHERE id = feed_id AND $cat_qpart AND
3871                                 ttrss_feeds.owner_uid = '$owner_uid'");
3872
3873                         $unread = (int) db_fetch_result($result, 0, "sv");
3874
3875                 } else {
3876                         $unread = (int) getFeedArticles($link, $feed_id, $is_cat, true, $owner_uid);
3877                 }
3878
3879                 db_query($link, "BEGIN");
3880
3881                 $result = db_query($link, "SELECT feed_id FROM $table
3882                         WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id' LIMIT 1");
3883
3884                 if (db_num_rows($result) == 1) {
3885                         db_query($link, "UPDATE $table SET
3886                                 value = '$unread', updated = NOW() WHERE
3887                                 feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3888
3889                 } else {
3890                         db_query($link, "INSERT INTO $table
3891                                 (feed_id, value, owner_uid, updated)
3892                                 VALUES
3893                                 ($feed_id, $unread, $owner_uid, NOW())");
3894                 }
3895
3896                 db_query($link, "COMMIT");
3897
3898                 if ($feed_id > 0 && $prev_unread != $unread) {
3899
3900                         if (!$is_cat) {
3901
3902                                 /* Update parent category */
3903
3904                                 if ($update_pcat) {
3905
3906                                         $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
3907                                                 WHERE owner_uid = '$owner_uid' AND id = '$feed_id'");
3908
3909                                         $cat_id = (int) db_fetch_result($result, 0, "cat_id");
3910
3911                                         ccache_update($link, $cat_id, $owner_uid, true);
3912
3913                                 }
3914                         }
3915                 } else if ($feed_id < 0) {
3916                         ccache_update_all($link, $owner_uid);
3917                 }
3918
3919                 return $unread;
3920         }
3921
3922         /* function ccache_cleanup($link, $owner_uid) {
3923
3924                 if (DB_TYPE == "pgsql") {
3925                         db_query($link, "DELETE FROM ttrss_counters_cache AS c1 WHERE
3926                                 (SELECT count(*) FROM ttrss_counters_cache AS c2
3927                                         WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
3928                                         AND owner_uid = '$owner_uid'");
3929
3930                         db_query($link, "DELETE FROM ttrss_cat_counters_cache AS c1 WHERE
3931                                 (SELECT count(*) FROM ttrss_cat_counters_cache AS c2
3932                                         WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
3933                                         AND owner_uid = '$owner_uid'");
3934                 } else {
3935                         db_query($link, "DELETE c1 FROM
3936                                         ttrss_counters_cache AS c1,
3937                                         ttrss_counters_cache AS c2
3938                                 WHERE
3939                                         c1.owner_uid = '$owner_uid' AND
3940                                         c1.owner_uid = c2.owner_uid AND
3941                                         c1.feed_id = c2.feed_id");
3942
3943                         db_query($link, "DELETE c1 FROM
3944                                         ttrss_cat_counters_cache AS c1,
3945                                         ttrss_cat_counters_cache AS c2
3946                                 WHERE
3947                                         c1.owner_uid = '$owner_uid' AND
3948                                         c1.owner_uid = c2.owner_uid AND
3949                                         c1.feed_id = c2.feed_id");
3950
3951                 }
3952         } */
3953
3954         function label_find_id($link, $label, $owner_uid) {
3955                 $result = db_query($link,
3956                         "SELECT id FROM ttrss_labels2 WHERE caption = '$label'
3957                                 AND owner_uid = '$owner_uid' LIMIT 1");
3958
3959                 if (db_num_rows($result) == 1) {
3960                         return db_fetch_result($result, 0, "id");
3961                 } else {
3962                         return 0;
3963                 }
3964         }
3965
3966         function get_article_labels($link, $id) {
3967                 $rv = array();
3968
3969
3970                 $result = db_query($link, "SELECT label_cache FROM
3971                         ttrss_user_entries WHERE ref_id = '$id' AND owner_uid = " .
3972                         $_SESSION["uid"]);
3973
3974                 $label_cache = db_fetch_result($result, 0, "label_cache");
3975
3976                 if ($label_cache) {
3977
3978                         $label_cache = json_decode($label_cache, true);
3979
3980                         if ($label_cache["no-labels"] == 1)
3981                                 return $rv;
3982                         else
3983                                 return $label_cache;
3984                 }
3985
3986                 $result = db_query($link,
3987                         "SELECT DISTINCT label_id,caption,fg_color,bg_color
3988                                 FROM ttrss_labels2, ttrss_user_labels2
3989                         WHERE id = label_id
3990                                 AND article_id = '$id'
3991                                 AND owner_uid = ".$_SESSION["uid"] . "
3992                         ORDER BY caption");
3993
3994                 while ($line = db_fetch_assoc($result)) {
3995                         $rk = array($line["label_id"], $line["caption"], $line["fg_color"],
3996                                 $line["bg_color"]);
3997                         array_push($rv, $rk);
3998                 }
3999
4000                 if (count($rv) > 0)
4001                         label_update_cache($link, $id, $rv);
4002                 else
4003                         label_update_cache($link, $id, array("no-labels" => 1));
4004
4005                 return $rv;
4006         }
4007
4008
4009         function label_find_caption($link, $label, $owner_uid) {
4010                 $result = db_query($link,
4011                         "SELECT caption FROM ttrss_labels2 WHERE id = '$label'
4012                                 AND owner_uid = '$owner_uid' LIMIT 1");
4013
4014                 if (db_num_rows($result) == 1) {
4015                         return db_fetch_result($result, 0, "caption");
4016                 } else {
4017                         return "";
4018                 }
4019         }
4020
4021         function label_update_cache($link, $id, $labels = false, $force = false) {
4022
4023                 if ($force)
4024                         label_clear_cache($link, $id);
4025
4026                 if (!$labels)
4027                         $labels = get_article_labels($link, $id);
4028
4029                 $labels = db_escape_string(json_encode($labels));
4030
4031                 db_query($link, "UPDATE ttrss_user_entries SET
4032                         label_cache = '$labels' WHERE ref_id = '$id'");
4033
4034         }
4035
4036         function label_clear_cache($link, $id) {
4037
4038                 db_query($link, "UPDATE ttrss_user_entries SET
4039                         label_cache = '' WHERE ref_id = '$id'");
4040
4041         }
4042
4043         function label_remove_article($link, $id, $label, $owner_uid) {
4044
4045                 $label_id = label_find_id($link, $label, $owner_uid);
4046
4047                 if (!$label_id) return;
4048
4049                 $result = db_query($link,
4050                         "DELETE FROM ttrss_user_labels2
4051                         WHERE
4052                                 label_id = '$label_id' AND
4053                                 article_id = '$id'");
4054
4055                 label_clear_cache($link, $id);
4056         }
4057
4058         function label_add_article($link, $id, $label, $owner_uid) {
4059
4060                 $label_id = label_find_id($link, $label, $owner_uid);
4061
4062                 if (!$label_id) return;
4063
4064                 $result = db_query($link,
4065                         "SELECT
4066                                 article_id FROM ttrss_labels2, ttrss_user_labels2
4067                         WHERE
4068                                 label_id = id AND
4069                                 label_id = '$label_id' AND
4070                                 article_id = '$id' AND owner_uid = '$owner_uid'
4071                         LIMIT 1");
4072
4073                 if (db_num_rows($result) == 0) {
4074                         db_query($link, "INSERT INTO ttrss_user_labels2
4075                                 (label_id, article_id) VALUES ('$label_id', '$id')");
4076                 }
4077
4078                 label_clear_cache($link, $id);
4079
4080         }
4081
4082         function label_remove($link, $id, $owner_uid) {
4083                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4084
4085                 db_query($link, "BEGIN");
4086
4087                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
4088                         WHERE id = '$id'");
4089
4090                 $caption = db_fetch_result($result, 0, "caption");
4091
4092                 $result = db_query($link, "DELETE FROM ttrss_labels2 WHERE id = '$id'
4093                         AND owner_uid = " . $owner_uid);
4094
4095                 if (db_affected_rows($link, $result) != 0 && $caption) {
4096
4097                         /* Remove access key for the label */
4098
4099                         $ext_id = -11 - $id;
4100
4101                         db_query($link, "DELETE FROM ttrss_access_keys WHERE
4102                                 feed_id = '$ext_id' AND owner_uid = $owner_uid");
4103
4104                         /* Disable filters that reference label being removed */
4105
4106                         db_query($link, "UPDATE ttrss_filters SET
4107                                 enabled = false WHERE action_param = '$caption'
4108                                         AND action_id = 7
4109                                         AND owner_uid = " . $owner_uid);
4110
4111                         /* Remove cached data */
4112
4113                         db_query($link, "UPDATE ttrss_user_entries SET label_cache = ''
4114                                 WHERE label_cache LIKE '%$caption%' AND owner_uid = " . $owner_uid);
4115
4116                 }
4117
4118                 db_query($link, "COMMIT");
4119         }
4120
4121         function label_create($link, $caption, $fg_color = '', $bg_color = '', $owner_uid) {
4122
4123                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
4124
4125                 db_query($link, "BEGIN");
4126
4127                 $result = false;
4128
4129                 $result = db_query($link, "SELECT id FROM ttrss_labels2
4130                         WHERE caption = '$caption' AND owner_uid = $owner_uid");
4131
4132                 if (db_num_rows($result) == 0) {
4133                         $result = db_query($link,
4134                                 "INSERT INTO ttrss_labels2 (caption,owner_uid,fg_color,bg_color)
4135                                         VALUES ('$caption', '$owner_uid', '$fg_color', '$bg_color')");
4136
4137                         $result = db_affected_rows($link, $result) != 0;
4138                 }
4139
4140                 db_query($link, "COMMIT");
4141
4142                 return $result;
4143         }
4144
4145         function format_tags_string($tags, $id) {
4146
4147                 $tags_str = "";
4148                 $tags_nolinks_str = "";
4149
4150                 $num_tags = 0;
4151
4152                 $tag_limit = 6;
4153
4154                 $formatted_tags = array();
4155
4156                 foreach ($tags as $tag) {
4157                         $num_tags++;
4158                         $tag_escaped = str_replace("'", "\\'", $tag);
4159
4160                         if (mb_strlen($tag) > 30) {
4161                                 $tag = truncate_string($tag, 30);
4162                         }
4163
4164                         $tag_str = "<a href=\"javascript:viewfeed('$tag_escaped')\">$tag</a>";
4165
4166                         array_push($formatted_tags, $tag_str);
4167
4168                         $tmp_tags_str = implode(", ", $formatted_tags);
4169
4170                         if ($num_tags == $tag_limit || mb_strlen($tmp_tags_str) > 150) {
4171                                 break;
4172                         }
4173                 }
4174
4175                 $tags_str = implode(", ", $formatted_tags);
4176
4177                 if ($num_tags < count($tags)) {
4178                         $tags_str .= ", &hellip;";
4179                 }
4180
4181                 if ($num_tags == 0) {
4182                         $tags_str = __("no tags");
4183                 }
4184
4185                 return $tags_str;
4186
4187         }
4188
4189         function format_article_labels($labels, $id) {
4190
4191                 $labels_str = "";
4192
4193                 foreach ($labels as $l) {
4194                         $labels_str .= sprintf("<span class='hlLabelRef'
4195                                 style='color : %s; background-color : %s'>%s</span>",
4196                                         $l[2], $l[3], $l[1]);
4197                         }
4198
4199                 return $labels_str;
4200
4201         }
4202
4203         function format_article_note($id, $note) {
4204
4205                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
4206                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
4207                         __('(edit note)')."</div>$note</div>";
4208
4209                 return $str;
4210         }
4211
4212         function toggle_collapse_cat($link, $cat_id, $mode) {
4213                 if ($cat_id > 0) {
4214                         $mode = bool_to_sql_bool($mode);
4215
4216                         db_query($link, "UPDATE ttrss_feed_categories SET
4217                                 collapsed = $mode WHERE id = '$cat_id' AND owner_uid = " .
4218                                 $_SESSION["uid"]);
4219                 } else {
4220                         $pref_name = '';
4221
4222                         switch ($cat_id) {
4223                         case -1:
4224                                 $pref_name = '_COLLAPSED_SPECIAL';
4225                                 break;
4226                         case -2:
4227                                 $pref_name = '_COLLAPSED_LABELS';
4228                                 break;
4229                         case 0:
4230                                 $pref_name = '_COLLAPSED_UNCAT';
4231                                 break;
4232                         }
4233
4234                         if ($pref_name) {
4235                                 if ($mode) {
4236                                         set_pref($link, $pref_name, 'true');
4237                                 } else {
4238                                         set_pref($link, $pref_name, 'false');
4239                                 }
4240                         }
4241                 }
4242         }
4243
4244         function remove_feed($link, $id, $owner_uid) {
4245
4246                 if ($id > 0) {
4247
4248                         /* save starred articles in Archived feed */
4249
4250                         db_query($link, "BEGIN");
4251
4252                         /* prepare feed if necessary */
4253
4254                         $result = db_query($link, "SELECT id FROM ttrss_archived_feeds
4255                                 WHERE id = '$id'");
4256
4257                         if (db_num_rows($result) == 0) {
4258                                 db_query($link, "INSERT INTO ttrss_archived_feeds
4259                                         (id, owner_uid, title, feed_url, site_url)
4260                                 SELECT id, owner_uid, title, feed_url, site_url from ttrss_feeds
4261                                 WHERE id = '$id'");
4262                         }
4263
4264                         db_query($link, "UPDATE ttrss_user_entries SET feed_id = NULL,
4265                                 orig_feed_id = '$id' WHERE feed_id = '$id' AND
4266                                         marked = true AND owner_uid = $owner_uid");
4267
4268                         /* Remove access key for the feed */
4269
4270                         db_query($link, "DELETE FROM ttrss_access_keys WHERE
4271                                 feed_id = '$id' AND owner_uid = $owner_uid");
4272
4273                         /* remove the feed */
4274
4275                         db_query($link, "DELETE FROM ttrss_feeds
4276                                         WHERE id = '$id' AND owner_uid = $owner_uid");
4277
4278                         db_query($link, "COMMIT");
4279
4280                         if (file_exists(ICONS_DIR . "/$id.ico")) {
4281                                 unlink(ICONS_DIR . "/$id.ico");
4282                         }
4283
4284                         ccache_remove($link, $id, $owner_uid);
4285
4286                 } else {
4287                         label_remove($link, -11-$id, $owner_uid);
4288                         ccache_remove($link, -11-$id, $owner_uid);
4289                 }
4290         }
4291
4292         function get_feed_category($link, $feed_cat, $parent_cat_id = false) {
4293                 if ($parent_cat_id) {
4294                         $parent_qpart = "parent_cat = '$parent_cat_id'";
4295                         $parent_insert = "'$parent_cat_id'";
4296                 } else {
4297                         $parent_qpart = "parent_cat IS NULL";
4298                         $parent_insert = "NULL";
4299                 }
4300
4301                 $result = db_query($link,
4302                         "SELECT id FROM ttrss_feed_categories
4303                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
4304
4305                 if (db_num_rows($result) == 0) {
4306                         return false;
4307                 } else {
4308                         return db_fetch_result($result, 0, "id");
4309                 }
4310         }
4311
4312         function add_feed_category($link, $feed_cat, $parent_cat_id = false) {
4313
4314                 if (!$feed_cat) return false;
4315
4316                 db_query($link, "BEGIN");
4317
4318                 if ($parent_cat_id) {
4319                         $parent_qpart = "parent_cat = '$parent_cat_id'";
4320                         $parent_insert = "'$parent_cat_id'";
4321                 } else {
4322                         $parent_qpart = "parent_cat IS NULL";
4323                         $parent_insert = "NULL";
4324                 }
4325
4326                 $result = db_query($link,
4327                         "SELECT id FROM ttrss_feed_categories
4328                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
4329
4330                 if (db_num_rows($result) == 0) {
4331
4332                         $result = db_query($link,
4333                                 "INSERT INTO ttrss_feed_categories (owner_uid,title,parent_cat)
4334                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat', $parent_insert)");
4335
4336                         db_query($link, "COMMIT");
4337
4338                         return true;
4339                 }
4340
4341                 return false;
4342         }
4343
4344         function remove_feed_category($link, $id, $owner_uid) {
4345
4346                 db_query($link, "DELETE FROM ttrss_feed_categories
4347                         WHERE id = '$id' AND owner_uid = $owner_uid");
4348
4349                 ccache_remove($link, $id, $owner_uid, true);
4350         }
4351
4352         function archive_article($link, $id, $owner_uid) {
4353                 db_query($link, "BEGIN");
4354
4355                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
4356                         WHERE ref_id = '$id' AND owner_uid = $owner_uid");
4357
4358                 if (db_num_rows($result) != 0) {
4359
4360                         /* prepare the archived table */
4361
4362                         $feed_id = (int) db_fetch_result($result, 0, "feed_id");
4363
4364                         if ($feed_id) {
4365                                 $result = db_query($link, "SELECT id FROM ttrss_archived_feeds
4366                                         WHERE id = '$feed_id'");
4367
4368                                 if (db_num_rows($result) == 0) {
4369                                         db_query($link, "INSERT INTO ttrss_archived_feeds
4370                                                 (id, owner_uid, title, feed_url, site_url)
4371                                         SELECT id, owner_uid, title, feed_url, site_url from ttrss_feeds
4372                                         WHERE id = '$feed_id'");
4373                                 }
4374
4375                                 db_query($link, "UPDATE ttrss_user_entries
4376                                         SET orig_feed_id = feed_id, feed_id = NULL
4377                                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
4378                         }
4379                 }
4380
4381                 db_query($link, "COMMIT");
4382         }
4383
4384         function getArticleFeed($link, $id) {
4385                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
4386                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
4387
4388                 if (db_num_rows($result) != 0) {
4389                         return db_fetch_result($result, 0, "feed_id");
4390                 } else {
4391                         return 0;
4392                 }
4393         }
4394
4395         /**
4396          * Fixes incomplete URLs by prepending "http://".
4397          * Also replaces feed:// with http://, and
4398          * prepends a trailing slash if the url is a domain name only.
4399          *
4400          * @param string $url Possibly incomplete URL
4401          *
4402          * @return string Fixed URL.
4403          */
4404         function fix_url($url) {
4405                 if (strpos($url, '://') === false) {
4406                         $url = 'http://' . $url;
4407                 } else if (substr($url, 0, 5) == 'feed:') {
4408                         $url = 'http:' . substr($url, 5);
4409                 }
4410
4411                 //prepend slash if the URL has no slash in it
4412                 // "http://www.example" -> "http://www.example/"
4413                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
4414                         $url .= '/';
4415                 }
4416
4417                 if ($url != "http:///")
4418                         return $url;
4419                 else
4420                         return '';
4421         }
4422
4423         function validate_feed_url($url) {
4424                 $parts = parse_url($url);
4425
4426                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
4427
4428         }
4429
4430         function get_article_enclosures($link, $id) {
4431
4432                 $query = "SELECT * FROM ttrss_enclosures
4433                         WHERE post_id = '$id' AND content_url != ''";
4434
4435                 $rv = array();
4436
4437                 $result = db_query($link, $query);
4438
4439                 if (db_num_rows($result) > 0) {
4440                         while ($line = db_fetch_assoc($result)) {
4441                                 array_push($rv, $line);
4442                         }
4443                 }
4444
4445                 return $rv;
4446         }
4447
4448         function api_get_feeds($link, $cat_id, $unread_only, $limit, $offset, $include_nested = false) {
4449
4450                         $feeds = array();
4451
4452                         /* Labels */
4453
4454                         if ($cat_id == -4 || $cat_id == -2) {
4455                                 $counters = getLabelCounters($link, true);
4456
4457                                 foreach (array_values($counters) as $cv) {
4458
4459                                         $unread = $cv["counter"];
4460
4461                                         if ($unread || !$unread_only) {
4462
4463                                                 $row = array(
4464                                                                 "id" => $cv["id"],
4465                                                                 "title" => $cv["description"],
4466                                                                 "unread" => $cv["counter"],
4467                                                                 "cat_id" => -2,
4468                                                         );
4469
4470                                                 array_push($feeds, $row);
4471                                         }
4472                                 }
4473                         }
4474
4475                         /* Virtual feeds */
4476
4477                         if ($cat_id == -4 || $cat_id == -1) {
4478                                 foreach (array(-1, -2, -3, -4, -6, 0) as $i) {
4479                                         $unread = getFeedUnread($link, $i);
4480
4481                                         if ($unread || !$unread_only) {
4482                                                 $title = getFeedTitle($link, $i);
4483
4484                                                 $row = array(
4485                                                                 "id" => $i,
4486                                                                 "title" => $title,
4487                                                                 "unread" => $unread,
4488                                                                 "cat_id" => -1,
4489                                                         );
4490                                                 array_push($feeds, $row);
4491                                         }
4492
4493                                 }
4494                         }
4495
4496                         /* Child cats */
4497
4498                         if ($include_nested && $cat_id) {
4499                                 $result = db_query($link, "SELECT
4500                                         id, title FROM ttrss_feed_categories
4501                                         WHERE parent_cat = '$cat_id' AND owner_uid = " . $_SESSION["uid"] .
4502                                 " ORDER BY id, title");
4503
4504                                 while ($line = db_fetch_assoc($result)) {
4505                                         $unread = getFeedUnread($link, $line["id"], true) +
4506                                                 getCategoryChildrenUnread($link, $line["id"]);
4507
4508                                         if ($unread || !$unread_only) {
4509                                                 $row = array(
4510                                                                 "id" => $line["id"],
4511                                                                 "title" => $line["title"],
4512                                                                 "unread" => $unread,
4513                                                                 "is_cat" => true,
4514                                                         );
4515                                                 array_push($feeds, $row);
4516                                         }
4517                                 }
4518                         }
4519
4520                         /* Real feeds */
4521
4522                         if ($limit) {
4523                                 $limit_qpart = "LIMIT $limit OFFSET $offset";
4524                         } else {
4525                                 $limit_qpart = "";
4526                         }
4527
4528                         if ($cat_id == -4 || $cat_id == -3) {
4529                                 $result = db_query($link, "SELECT
4530                                         id, feed_url, cat_id, title, order_id, ".
4531                                                 SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
4532                                                 FROM ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"] .
4533                                                 " ORDER BY cat_id, title " . $limit_qpart);
4534                         } else {
4535
4536                                 if ($cat_id)
4537                                         $cat_qpart = "cat_id = '$cat_id'";
4538                                 else
4539                                         $cat_qpart = "cat_id IS NULL";
4540
4541                                 $result = db_query($link, "SELECT
4542                                         id, feed_url, cat_id, title, order_id, ".
4543                                                 SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
4544                                                 FROM ttrss_feeds WHERE
4545                                                 $cat_qpart AND owner_uid = " . $_SESSION["uid"] .
4546                                                 " ORDER BY cat_id, title " . $limit_qpart);
4547                         }
4548
4549                         while ($line = db_fetch_assoc($result)) {
4550
4551                                 $unread = getFeedUnread($link, $line["id"]);
4552
4553                                 $has_icon = feed_has_icon($line['id']);
4554
4555                                 if ($unread || !$unread_only) {
4556
4557                                         $row = array(
4558                                                         "feed_url" => $line["feed_url"],
4559                                                         "title" => $line["title"],
4560                                                         "id" => (int)$line["id"],
4561                                                         "unread" => (int)$unread,
4562                                                         "has_icon" => $has_icon,
4563                                                         "cat_id" => (int)$line["cat_id"],
4564                                                         "last_updated" => strtotime($line["last_updated"]),
4565                                                         "order_id" => (int) $line["order_id"],
4566                                                 );
4567
4568                                         array_push($feeds, $row);
4569                                 }
4570                         }
4571
4572                 return $feeds;
4573         }
4574
4575         function api_get_headlines($link, $feed_id, $limit, $offset,
4576                                 $filter, $is_cat, $show_excerpt, $show_content, $view_mode, $order,
4577                                 $include_attachments, $since_id,
4578                                 $search = "", $search_mode = "", $match_on = "", $include_nested = false) {
4579
4580                         $qfh_ret = queryFeedHeadlines($link, $feed_id, $limit,
4581                                 $view_mode, $is_cat, $search, $search_mode, $match_on,
4582                                 $order, $offset, 0, false, $since_id, $include_nested);
4583
4584                         $result = $qfh_ret[0];
4585                         $feed_title = $qfh_ret[1];
4586
4587                         $headlines = array();
4588
4589                         while ($line = db_fetch_assoc($result)) {
4590                                 $is_updated = ($line["last_read"] == "" &&
4591                                         ($line["unread"] != "t" && $line["unread"] != "1"));
4592
4593                                 $tags = explode(",", $line["tag_cache"]);
4594                                 $labels = json_decode($line["label_cache"], true);
4595
4596                                 //if (!$tags) $tags = get_article_tags($link, $line["id"]);
4597                                 //if (!$labels) $labels = get_article_labels($link, $line["id"]);
4598
4599                                 $headline_row = array(
4600                                                 "id" => (int)$line["id"],
4601                                                 "unread" => sql_bool_to_bool($line["unread"]),
4602                                                 "marked" => sql_bool_to_bool($line["marked"]),
4603                                                 "published" => sql_bool_to_bool($line["published"]),
4604                                                 "updated" => strtotime($line["updated"]),
4605                                                 "is_updated" => $is_updated,
4606                                                 "title" => $line["title"],
4607                                                 "link" => $line["link"],
4608                                                 "feed_id" => $line["feed_id"],
4609                                                 "tags" => $tags,
4610                                         );
4611
4612                                         if ($include_attachments)
4613                                                 $headline_row['attachments'] = get_article_enclosures($link,
4614                                                         $line['id']);
4615
4616                                 if ($show_excerpt) {
4617                                         $excerpt = truncate_string(strip_tags($line["content_preview"]), 100);
4618                                         $headline_row["excerpt"] = $excerpt;
4619                                 }
4620
4621                                 if ($show_content) {
4622                                         $headline_row["content"] = $line["content_preview"];
4623                                 }
4624
4625                                 // unify label output to ease parsing
4626                                 if ($labels["no-labels"] == 1) $labels = array();
4627
4628                                 $headline_row["labels"] = $labels;
4629
4630                                 $headline_row["feed_title"] = $line["feed_title"];
4631
4632                                 array_push($headlines, $headline_row);
4633                         }
4634
4635                         return $headlines;
4636         }
4637
4638         function generate_error_feed($link, $error) {
4639                 $reply = array();
4640
4641                 $reply['headlines']['id'] = -6;
4642                 $reply['headlines']['is_cat'] = false;
4643
4644                 $reply['headlines']['toolbar'] = '';
4645                 $reply['headlines']['content'] = "<div class='whiteBox'>". $error . "</div>";
4646
4647                 $reply['headlines-info'] = array("count" => 0,
4648                         "vgroup_last_feed" => '',
4649                         "unread" => 0,
4650                         "disable_cache" => true);
4651
4652                 return $reply;
4653         }
4654
4655
4656         function generate_dashboard_feed($link) {
4657                 $reply = array();
4658
4659                 $reply['headlines']['id'] = -5;
4660                 $reply['headlines']['is_cat'] = false;
4661
4662                 $reply['headlines']['toolbar'] = '';
4663                 $reply['headlines']['content'] = "<div class='whiteBox'>".__('No feed selected.');
4664
4665                 $reply['headlines']['content'] .= "<p class=\"small\"><span class=\"insensitive\">";
4666
4667                 $result = db_query($link, "SELECT ".SUBSTRING_FOR_DATE."(MAX(last_updated), 1, 19) AS last_updated FROM ttrss_feeds
4668                         WHERE owner_uid = " . $_SESSION['uid']);
4669
4670                 $last_updated = db_fetch_result($result, 0, "last_updated");
4671                 $last_updated = make_local_datetime($link, $last_updated, false);
4672
4673                 $reply['headlines']['content'] .= sprintf(__("Feeds last updated at %s"), $last_updated);
4674
4675                 $result = db_query($link, "SELECT COUNT(id) AS num_errors
4676                         FROM ttrss_feeds WHERE last_error != '' AND owner_uid = ".$_SESSION["uid"]);
4677
4678                 $num_errors = db_fetch_result($result, 0, "num_errors");
4679
4680                 if ($num_errors > 0) {
4681                         $reply['headlines']['content'] .= "<br/>";
4682                         $reply['headlines']['content'] .= "<a class=\"insensitive\" href=\"#\" onclick=\"showFeedsWithErrors()\">".
4683                                 __('Some feeds have update errors (click for details)')."</a>";
4684                 }
4685                 $reply['headlines']['content'] .= "</span></p>";
4686
4687                 $reply['headlines-info'] = array("count" => 0,
4688                         "vgroup_last_feed" => '',
4689                         "unread" => 0,
4690                         "disable_cache" => true);
4691
4692                 return $reply;
4693         }
4694
4695         function save_email_address($link, $email) {
4696                 // FIXME: implement persistent storage of emails
4697
4698                 if (!$_SESSION['stored_emails'])
4699                         $_SESSION['stored_emails'] = array();
4700
4701                 if (!in_array($email, $_SESSION['stored_emails']))
4702                         array_push($_SESSION['stored_emails'], $email);
4703         }
4704
4705         function update_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
4706                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4707
4708                 $sql_is_cat = bool_to_sql_bool($is_cat);
4709
4710                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
4711                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
4712                         AND owner_uid = " . $owner_uid);
4713
4714                 if (db_num_rows($result) == 1) {
4715                         $key = db_escape_string(sha1(uniqid(rand(), true)));
4716
4717                         db_query($link, "UPDATE ttrss_access_keys SET access_key = '$key'
4718                                 WHERE feed_id = '$feed_id' AND is_cat = $sql_is_cat
4719                                 AND owner_uid = " . $owner_uid);
4720
4721                         return $key;
4722
4723                 } else {
4724                         return get_feed_access_key($link, $feed_id, $is_cat, $owner_uid);
4725                 }
4726         }
4727
4728         function get_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
4729
4730                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4731
4732                 $sql_is_cat = bool_to_sql_bool($is_cat);
4733
4734                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
4735                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
4736                         AND owner_uid = " . $owner_uid);
4737
4738                 if (db_num_rows($result) == 1) {
4739                         return db_fetch_result($result, 0, "access_key");
4740                 } else {
4741                         $key = db_escape_string(sha1(uniqid(rand(), true)));
4742
4743                         $result = db_query($link, "INSERT INTO ttrss_access_keys
4744                                 (access_key, feed_id, is_cat, owner_uid)
4745                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
4746
4747                         return $key;
4748                 }
4749                 return false;
4750         }
4751
4752         function get_feeds_from_html($url, $content)
4753         {
4754                 $url     = fix_url($url);
4755                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
4756
4757                 libxml_use_internal_errors(true);
4758
4759                 $doc = new DOMDocument();
4760                 $doc->loadHTML($content);
4761                 $xpath = new DOMXPath($doc);
4762                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
4763                 $feedUrls = array();
4764                 foreach ($entries as $entry) {
4765                         if ($entry->hasAttribute('href')) {
4766                                 $title = $entry->getAttribute('title');
4767                                 if ($title == '') {
4768                                         $title = $entry->getAttribute('type');
4769                                 }
4770                                 $feedUrl = rewrite_relative_url(
4771                                         $baseUrl, $entry->getAttribute('href')
4772                                 );
4773                                 $feedUrls[$feedUrl] = $title;
4774                         }
4775                 }
4776                 return $feedUrls;
4777         }
4778
4779         function is_html($content) {
4780                 return preg_match("/<html|DOCTYPE html/i", $content) !== 0;
4781         }
4782
4783         function url_is_html($url, $login = false, $pass = false) {
4784                 return is_html(fetch_file_contents($url, false, $login, $pass));
4785         }
4786
4787         function print_label_select($link, $name, $value, $attributes = "") {
4788
4789                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
4790                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
4791
4792                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
4793                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
4794
4795                 while ($line = db_fetch_assoc($result)) {
4796
4797                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
4798
4799                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
4800                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
4801
4802                 }
4803
4804 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
4805
4806                 print "</select>";
4807
4808
4809         }
4810
4811         function format_article_enclosures($link, $id, $always_display_enclosures,
4812                                         $article_content) {
4813
4814                 $result = get_article_enclosures($link, $id);
4815                 $rv = '';
4816
4817                 if (count($result) > 0) {
4818
4819                         $entries_html = array();
4820                         $entries = array();
4821
4822                         foreach ($result as $line) {
4823
4824                                 $url = $line["content_url"];
4825                                 $ctype = $line["content_type"];
4826
4827                                 if (!$ctype) $ctype = __("unknown type");
4828
4829                                 $filename = substr($url, strrpos($url, "/")+1);
4830
4831 #                               $player = format_inline_player($link, $url, $ctype);
4832
4833 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
4834 #                                       $filename . " (" . $ctype . ")" . "</a>";
4835
4836                                 $entry = "<div onclick=\"window.open('".htmlspecialchars($url)."')\"
4837                                         dojoType=\"dijit.MenuItem\">$filename ($ctype)</div>";
4838
4839                                 array_push($entries_html, $entry);
4840
4841                                 $entry = array();
4842
4843                                 $entry["type"] = $ctype;
4844                                 $entry["filename"] = $filename;
4845                                 $entry["url"] = $url;
4846
4847                                 array_push($entries, $entry);
4848                         }
4849
4850                         if (!get_pref($link, "STRIP_IMAGES")) {
4851                                 if ($always_display_enclosures ||
4852                                                         !preg_match("/<img/i", $article_content)) {
4853
4854                                         foreach ($entries as $entry) {
4855
4856                                                 if (preg_match("/image/", $entry["type"]) ||
4857                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
4858
4859                                                                 $rv .= "<p><img
4860                                                                 alt=\"".htmlspecialchars($entry["filename"])."\"
4861                                                                 src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
4862
4863                                                 }
4864                                         }
4865                                 }
4866                         }
4867
4868                         $rv .= "<br/><div dojoType=\"dijit.form.DropDownButton\">".
4869                                 "<span>" . __('Attachments')."</span>";
4870                         $rv .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
4871
4872                         foreach ($entries_html as $entry) { $rv .= $entry; };
4873
4874                         $rv .= "</div></div>";
4875                 }
4876
4877                 return $rv;
4878         }
4879
4880         function getLastArticleId($link) {
4881                 $result = db_query($link, "SELECT MAX(ref_id) AS id FROM ttrss_user_entries
4882                         WHERE owner_uid = " . $_SESSION["uid"]);
4883
4884                 if (db_num_rows($result) == 1) {
4885                         return db_fetch_result($result, 0, "id");
4886                 } else {
4887                         return -1;
4888                 }
4889         }
4890
4891         function build_url($parts) {
4892                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
4893         }
4894
4895         /**
4896          * Converts a (possibly) relative URL to a absolute one.
4897          *
4898          * @param string $url     Base URL (i.e. from where the document is)
4899          * @param string $rel_url Possibly relative URL in the document
4900          *
4901          * @return string Absolute URL
4902          */
4903         function rewrite_relative_url($url, $rel_url) {
4904                 if (strpos($rel_url, "magnet:") === 0) {
4905                         return $rel_url;
4906                 } else if (strpos($rel_url, "://") !== false) {
4907                         return $rel_url;
4908                 } else if (strpos($rel_url, "//") === 0) {
4909                         # protocol-relative URL (rare but they exist)
4910                         return $rel_url;
4911                 } else if (strpos($rel_url, "/") === 0)
4912                 {
4913                         $parts = parse_url($url);
4914                         $parts['path'] = $rel_url;
4915
4916                         return build_url($parts);
4917
4918                 } else {
4919                         $parts = parse_url($url);
4920                         if (!isset($parts['path'])) {
4921                                 $parts['path'] = '/';
4922                         }
4923                         $dir = $parts['path'];
4924                         if (substr($dir, -1) !== '/') {
4925                                 $dir = dirname($parts['path']);
4926                                 $dir !== '/' && $dir .= '/';
4927                         }
4928                         $parts['path'] = $dir . $rel_url;
4929
4930                         return build_url($parts);
4931                 }
4932         }
4933
4934         function sphinx_search($query, $offset = 0, $limit = 30) {
4935                 require_once 'lib/sphinxapi.php';
4936
4937                 $sphinxClient = new SphinxClient();
4938
4939                 $sphinxClient->SetServer('localhost', 9312);
4940                 $sphinxClient->SetConnectTimeout(1);
4941
4942                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
4943                         'feed_title' => 20));
4944
4945                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
4946                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
4947                 $sphinxClient->SetLimits($offset, $limit, 1000);
4948                 $sphinxClient->SetArrayResult(false);
4949                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
4950
4951                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
4952
4953                 $ids = array();
4954
4955                 if (is_array($result['matches'])) {
4956                         foreach (array_keys($result['matches']) as $int_id) {
4957                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
4958                                 array_push($ids, $ref_id);
4959                         }
4960                 }
4961
4962                 return $ids;
4963         }
4964
4965         function cleanup_tags($link, $days = 14, $limit = 1000) {
4966
4967                 if (DB_TYPE == "pgsql") {
4968                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
4969                 } else if (DB_TYPE == "mysql") {
4970                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
4971                 }
4972
4973                 $tags_deleted = 0;
4974
4975                 while ($limit > 0) {
4976                         $limit_part = 500;
4977
4978                         $query = "SELECT ttrss_tags.id AS id
4979                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
4980                                 WHERE post_int_id = int_id AND $interval_query AND
4981                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
4982
4983                         $result = db_query($link, $query);
4984
4985                         $ids = array();
4986
4987                         while ($line = db_fetch_assoc($result)) {
4988                                 array_push($ids, $line['id']);
4989                         }
4990
4991                         if (count($ids) > 0) {
4992                                 $ids = join(",", $ids);
4993                                 print ".";
4994
4995                                 $tmp_result = db_query($link, "DELETE FROM ttrss_tags WHERE id IN ($ids)");
4996                                 $tags_deleted += db_affected_rows($link, $tmp_result);
4997                         } else {
4998                                 break;
4999                         }
5000
5001                         $limit -= $limit_part;
5002                 }
5003
5004                 print "\n";
5005
5006                 return $tags_deleted;
5007         }
5008
5009         function print_user_stylesheet($link) {
5010                 $value = get_pref($link, 'USER_STYLESHEET');
5011
5012                 if ($value) {
5013                         print "<style type=\"text/css\">";
5014                         print str_replace("<br/>", "\n", $value);
5015                         print "</style>";
5016                 }
5017
5018         }
5019
5020 /*      function rewrite_urls($line) {
5021                 global $url_regex;
5022
5023                 $urls = null;
5024
5025                 $result = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
5026                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $line);
5027
5028                 return $result;
5029         } */
5030
5031         function rewrite_urls($html) {
5032                 libxml_use_internal_errors(true);
5033
5034                 $charset_hack = '<head>
5035                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
5036                 </head>';
5037
5038                 $doc = new DOMDocument();
5039                 $doc->loadHTML($charset_hack . $html);
5040                 $xpath = new DOMXPath($doc);
5041
5042                 $entries = $xpath->query('//*/text()');
5043
5044                 foreach ($entries as $entry) {
5045                         if (strstr($entry->wholeText, "://") !== false) {
5046                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
5047                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
5048
5049                                 if ($text != $entry->wholeText) {
5050                                         $cdoc = new DOMDocument();
5051                                         $cdoc->loadHTML($charset_hack . $text);
5052
5053
5054                                         foreach ($cdoc->childNodes as $cnode) {
5055                                                 $cnode = $doc->importNode($cnode, true);
5056
5057                                                 if ($cnode) {
5058                                                         $entry->parentNode->insertBefore($cnode);
5059                                                 }
5060                                         }
5061
5062                                         $entry->parentNode->removeChild($entry);
5063
5064                                 }
5065                         }
5066                 }
5067
5068                 $node = $doc->getElementsByTagName('body')->item(0);
5069
5070                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
5071                 if ($node)
5072                         return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
5073                 else
5074                         return $html;
5075         }
5076
5077         function filter_to_sql($filter) {
5078                 $query = array();
5079
5080                 if (DB_TYPE == "pgsql")
5081                         $reg_qpart = "~";
5082                 else
5083                         $reg_qpart = "REGEXP";
5084
5085                 foreach ($filter["rules"] AS $rule) {
5086                         $regexp_valid = preg_match('/' . $rule['reg_exp'] . '/',
5087                                 $rule['reg_exp']) !== FALSE;
5088
5089                         if ($regexp_valid) {
5090
5091                                 $rule['reg_exp'] = db_escape_string($rule['reg_exp']);
5092
5093                                 switch ($rule["type"]) {
5094                                         case "title":
5095                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
5096                                                         $rule['reg_exp'] . "')";
5097                                                 break;
5098                                         case "content":
5099                                                 $qpart = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
5100                                                         $rule['reg_exp'] . "')";
5101                                                 break;
5102                                         case "both":
5103                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
5104                                                         $rule['reg_exp'] . "') OR LOWER(" .
5105                                                         "ttrss_entries.content) $reg_qpart LOWER('" . $rule['reg_exp'] . "')";
5106                                                 break;
5107                                         case "tag":
5108                                                 $qpart = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
5109                                                         $rule['reg_exp'] . "')";
5110                                                 break;
5111                                         case "link":
5112                                                 $qpart = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
5113                                                         $rule['reg_exp'] . "')";
5114                                                 break;
5115                                         case "author":
5116                                                 $qpart = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
5117                                                         $rule['reg_exp'] . "')";
5118                                                 break;
5119                                 }
5120
5121                                 if (isset($rule["feed_id"]) && $rule["feed_id"] > 0) {
5122                                         $qpart .= " AND feed_id = " . db_escape_string($rule["feed_id"]);
5123                                 }
5124
5125                                 if (isset($rule["cat_id"])) {
5126                                         $qpart .= " AND cat_id " . ($rule["cat_id"] ? '= ' . $rule["cat_id"] : 'IS NULL');
5127                                 }
5128
5129                                 array_push($query, "($qpart)");
5130
5131                         }
5132                 }
5133
5134                 if (count($query) > 0) {
5135                         return "(" . join($filter["match_any_rule"] ? "OR" : "AND", $query) . ")";
5136                 } else {
5137                         return "(false)";
5138                 }
5139         }
5140
5141         // Status codes:
5142         // -1  - never connected
5143         // 0   - no data received
5144         // 1   - data received successfully
5145         // 2   - did not receive valid data
5146         // >10 - server error, code + 10 (e.g. 16 means server error 6)
5147
5148         function get_linked_feeds($link, $instance_id = false) {
5149                 if ($instance_id)
5150                         $instance_qpart = "id = '$instance_id' AND ";
5151                 else
5152                         $instance_qpart = "";
5153
5154                 if (DB_TYPE == "pgsql") {
5155                         $date_qpart = "last_connected < NOW() - INTERVAL '6 hours'";
5156                 } else {
5157                         $date_qpart = "last_connected < DATE_SUB(NOW(), INTERVAL 6 HOUR)";
5158                 }
5159
5160                 $result = db_query($link, "SELECT id, access_key, access_url FROM ttrss_linked_instances
5161                         WHERE $instance_qpart $date_qpart ORDER BY last_connected");
5162
5163                 while ($line = db_fetch_assoc($result)) {
5164                         $id = $line['id'];
5165
5166                         _debug("Updating: " . $line['access_url'] . " ($id)");
5167
5168                         $fetch_url = $line['access_url'] . '/public.php?op=fbexport';
5169                         $post_query = 'key=' . $line['access_key'];
5170
5171                         $feeds = fetch_file_contents($fetch_url, false, false, false, $post_query);
5172
5173                         // try doing it the old way
5174                         if (!$feeds) {
5175                                 $fetch_url = $line['access_url'] . '/backend.php?op=fbexport';
5176                                 $feeds = fetch_file_contents($fetch_url, false, false, false, $post_query);
5177                         }
5178
5179                         if ($feeds) {
5180                                 $feeds = json_decode($feeds, true);
5181
5182                                 if ($feeds) {
5183                                         if ($feeds['error']) {
5184                                                 $status = $feeds['error']['code'] + 10;
5185                                         } else {
5186                                                 $status = 1;
5187
5188                                                 if (count($feeds['feeds']) > 0) {
5189
5190                                                         db_query($link, "DELETE FROM ttrss_linked_feeds
5191                                                                 WHERE instance_id = '$id'");
5192
5193                                                         foreach ($feeds['feeds'] as $feed) {
5194                                                                 $feed_url = db_escape_string($feed['feed_url']);
5195                                                                 $title = db_escape_string($feed['title']);
5196                                                                 $subscribers = db_escape_string($feed['subscribers']);
5197                                                                 $site_url = db_escape_string($feed['site_url']);
5198
5199                                                                 db_query($link, "INSERT INTO ttrss_linked_feeds
5200                                                                         (feed_url, site_url, title, subscribers, instance_id, created, updated)
5201                                                                 VALUES
5202                                                                         ('$feed_url', '$site_url', '$title', '$subscribers', '$id', NOW(), NOW())");
5203                                                         }
5204                                                 } else {
5205                                                         // received 0 feeds, this might indicate that
5206                                                         // the instance on the other hand is rebuilding feedbrowser cache
5207                                                         // we will try again later
5208
5209                                                         // TODO: maybe perform expiration based on updated here?
5210                                                 }
5211
5212                                                 _debug("Processed " . count($feeds['feeds']) . " feeds.");
5213                                         }
5214                                 } else {
5215                                         $status = 2;
5216                                 }
5217
5218                         } else {
5219                                 $status = 0;
5220                         }
5221
5222                         _debug("Status: $status");
5223
5224                         db_query($link, "UPDATE ttrss_linked_instances SET
5225                                 last_status_out = '$status', last_connected = NOW() WHERE id = '$id'");
5226
5227                 }
5228         }
5229
5230         function make_feed_browser($link, $search, $limit, $mode = 1) {
5231
5232                 $owner_uid = $_SESSION["uid"];
5233                 $rv = '';
5234
5235                 if ($search) {
5236                         $search_qpart = "AND (UPPER(feed_url) LIKE UPPER('%$search%') OR
5237                                                 UPPER(title) LIKE UPPER('%$search%'))";
5238                 } else {
5239                         $search_qpart = "";
5240                 }
5241
5242                 if ($mode == 1) {
5243                         /* $result = db_query($link, "SELECT feed_url, subscribers FROM
5244                          ttrss_feedbrowser_cache WHERE (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
5245                         WHERE tf.feed_url = ttrss_feedbrowser_cache.feed_url
5246                         AND owner_uid = '$owner_uid') $search_qpart
5247                         ORDER BY subscribers DESC LIMIT $limit"); */
5248
5249                         $result = db_query($link, "SELECT feed_url, site_url, title, SUM(subscribers) AS subscribers FROM
5250                                                 (SELECT feed_url, site_url, title, subscribers FROM ttrss_feedbrowser_cache UNION ALL
5251                                                         SELECT feed_url, site_url, title, subscribers FROM ttrss_linked_feeds) AS qqq
5252                                                 WHERE
5253                                                         (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
5254                                                                 WHERE tf.feed_url = qqq.feed_url
5255                                                                         AND owner_uid = '$owner_uid') $search_qpart
5256                                                 GROUP BY feed_url, site_url, title ORDER BY subscribers DESC LIMIT $limit");
5257
5258                 } else if ($mode == 2) {
5259                         $result = db_query($link, "SELECT *,
5260                                                 (SELECT COUNT(*) FROM ttrss_user_entries WHERE
5261                                                         orig_feed_id = ttrss_archived_feeds.id) AS articles_archived
5262                                                 FROM
5263                                                         ttrss_archived_feeds
5264                                                 WHERE
5265                                                 (SELECT COUNT(*) FROM ttrss_feeds
5266                                                         WHERE ttrss_feeds.feed_url = ttrss_archived_feeds.feed_url AND
5267                                                                 owner_uid = '$owner_uid') = 0   AND
5268                                                 owner_uid = '$owner_uid' $search_qpart
5269                                                 ORDER BY id DESC LIMIT $limit");
5270                 }
5271
5272                 $feedctr = 0;
5273
5274                 while ($line = db_fetch_assoc($result)) {
5275
5276                         if ($mode == 1) {
5277
5278                                 $feed_url = htmlspecialchars($line["feed_url"]);
5279                                 $site_url = htmlspecialchars($line["site_url"]);
5280                                 $subscribers = $line["subscribers"];
5281
5282                                 $check_box = "<input onclick='toggleSelectListRow2(this)'
5283                                                         dojoType=\"dijit.form.CheckBox\"
5284                                                         type=\"checkbox\" \">";
5285
5286                                 $class = ($feedctr % 2) ? "even" : "odd";
5287
5288                                 $site_url = "<a target=\"_blank\"
5289                                                         href=\"$site_url\">
5290                                                         <span class=\"fb_feedTitle\">".
5291                                 htmlspecialchars($line["title"])."</span></a>";
5292
5293                                 $feed_url = "<a target=\"_blank\" class=\"fb_feedUrl\"
5294                                                         href=\"$feed_url\"><img src='images/feed-icon-12x12.png'
5295                                                         style='vertical-align : middle'></a>";
5296
5297                                 $rv .= "<li>$check_box $feed_url $site_url".
5298                                                         "&nbsp;<span class='subscribers'>($subscribers)</span></li>";
5299
5300                         } else if ($mode == 2) {
5301                                 $feed_url = htmlspecialchars($line["feed_url"]);
5302                                 $site_url = htmlspecialchars($line["site_url"]);
5303                                 $title = htmlspecialchars($line["title"]);
5304
5305                                 $check_box = "<input onclick='toggleSelectListRow2(this)' dojoType=\"dijit.form.CheckBox\"
5306                                                         type=\"checkbox\">";
5307
5308                                 $class = ($feedctr % 2) ? "even" : "odd";
5309
5310                                 if ($line['articles_archived'] > 0) {
5311                                         $archived = sprintf(__("%d archived articles"), $line['articles_archived']);
5312                                         $archived = "&nbsp;<span class='subscribers'>($archived)</span>";
5313                                 } else {
5314                                         $archived = '';
5315                                 }
5316
5317                                 $site_url = "<a target=\"_blank\"
5318                                                         href=\"$site_url\">
5319                                                         <span class=\"fb_feedTitle\">".
5320                                 htmlspecialchars($line["title"])."</span></a>";
5321
5322                                 $feed_url = "<a target=\"_blank\" class=\"fb_feedUrl\"
5323                                                         href=\"$feed_url\"><img src='images/feed-icon-12x12.png'
5324                                                         style='vertical-align : middle'></a>";
5325
5326
5327                                 $rv .= "<li id=\"FBROW-".$line["id"]."\">".
5328                                                         "$check_box $feed_url $site_url $archived</li>";
5329                         }
5330
5331                         ++$feedctr;
5332                 }
5333
5334                 if ($feedctr == 0) {
5335                         $rv .= "<li style=\"text-align : center\"><p>".__('No feeds found.')."</p></li>";
5336                 }
5337
5338                 return $rv;
5339         }
5340
5341         if (!function_exists('gzdecode')) {
5342                 function gzdecode($string) { // no support for 2nd argument
5343                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
5344                                 base64_encode($string));
5345                 }
5346         }
5347
5348         function perform_data_import($link, $filename, $owner_uid) {
5349
5350                 $num_imported = 0;
5351                 $num_processed = 0;
5352                 $num_feeds_created = 0;
5353
5354                 $doc = @DOMDocument::load($filename);
5355
5356                 if (!$doc) {
5357                         $contents = file_get_contents($filename);
5358
5359                         if ($contents) {
5360                                 $data = @gzuncompress($contents);
5361                         }
5362
5363                         if (!$data) {
5364                                 $data = @gzdecode($contents);
5365                         }
5366
5367                         if ($data)
5368                                 $doc = DOMDocument::loadXML($data);
5369                 }
5370
5371                 if ($doc) {
5372
5373                         $xpath = new DOMXpath($doc);
5374
5375                         $container = $doc->firstChild;
5376
5377                         if ($container && $container->hasAttribute('schema-version')) {
5378                                 $schema_version = $container->getAttribute('schema-version');
5379
5380                                 if ($schema_version != SCHEMA_VERSION) {
5381                                         print "<p>" .__("Could not import: incorrect schema version.") . "</p>";
5382                                         return;
5383                                 }
5384
5385                         } else {
5386                                 print "<p>" . __("Could not import: unrecognized document format.") . "</p>";
5387                                 return;
5388                         }
5389
5390                         $articles = $xpath->query("//article");
5391
5392                         foreach ($articles as $article_node) {
5393                                 if ($article_node->childNodes) {
5394
5395                                         $ref_id = 0;
5396
5397                                         $article = array();
5398
5399                                         foreach ($article_node->childNodes as $child) {
5400                                                 if ($child->nodeName != 'label_cache')
5401                                                         $article[$child->nodeName] = db_escape_string($child->nodeValue);
5402                                                 else
5403                                                         $article[$child->nodeName] = $child->nodeValue;
5404                                         }
5405
5406                                         //print_r($article);
5407
5408                                         if ($article['guid']) {
5409
5410                                                 ++$num_processed;
5411
5412                                                 //db_query($link, "BEGIN");
5413
5414                                                 //print 'GUID:' . $article['guid'] . "\n";
5415
5416                                                 $result = db_query($link, "SELECT id FROM ttrss_entries
5417                                                         WHERE guid = '".$article['guid']."'");
5418
5419                                                 if (db_num_rows($result) == 0) {
5420
5421                                                         $result = db_query($link,
5422                                                                 "INSERT INTO ttrss_entries
5423                                                                         (title,
5424                                                                         guid,
5425                                                                         link,
5426                                                                         updated,
5427                                                                         content,
5428                                                                         content_hash,
5429                                                                         no_orig_date,
5430                                                                         date_updated,
5431                                                                         date_entered,
5432                                                                         comments,
5433                                                                         num_comments,
5434                                                                         author)
5435                                                                 VALUES
5436                                                                         ('".$article['title']."',
5437                                                                         '".$article['guid']."',
5438                                                                         '".$article['link']."',
5439                                                                         '".$article['updated']."',
5440                                                                         '".$article['content']."',
5441                                                                         '".sha1($article['content'])."',
5442                                                                         false,
5443                                                                         NOW(),
5444                                                                         NOW(),
5445                                                                         '',
5446                                                                         '0',
5447                                                                         '')");
5448
5449                                                         $result = db_query($link, "SELECT id FROM ttrss_entries
5450                                                                 WHERE guid = '".$article['guid']."'");
5451
5452                                                         if (db_num_rows($result) != 0) {
5453                                                                 $ref_id = db_fetch_result($result, 0, "id");
5454                                                         }
5455
5456                                                 } else {
5457                                                         $ref_id = db_fetch_result($result, 0, "id");
5458                                                 }
5459
5460                                                 //print "Got ref ID: $ref_id\n";
5461
5462                                                 if ($ref_id) {
5463
5464                                                         $feed_url = $article['feed_url'];
5465                                                         $feed_title = $article['feed_title'];
5466
5467                                                         $feed = 'NULL';
5468
5469                                                         if ($feed_url && $feed_title) {
5470                                                                 $result = db_query($link, "SELECT id FROM ttrss_feeds
5471                                                                         WHERE feed_url = '$feed_url' AND owner_uid = '$owner_uid'");
5472
5473                                                                 if (db_num_rows($result) != 0) {
5474                                                                         $feed = db_fetch_result($result, 0, "id");
5475                                                                 } else {
5476                                                                         // try autocreating feed in Uncategorized...
5477
5478                                                                         $result = db_query($link, "INSERT INTO ttrss_feeds (owner_uid,
5479                                                                                 feed_url, title) VALUES ($owner_uid, '$feed_url', '$feed_title')");
5480
5481                                                                         $result = db_query($link, "SELECT id FROM ttrss_feeds
5482                                                                                 WHERE feed_url = '$feed_url' AND owner_uid = '$owner_uid'");
5483
5484                                                                         if (db_num_rows($result) != 0) {
5485                                                                                 ++$num_feeds_created;
5486
5487                                                                                 $feed = db_fetch_result($result, 0, "id");
5488                                                                         }
5489                                                                 }
5490                                                         }
5491
5492                                                         if ($feed != 'NULL')
5493                                                                 $feed_qpart = "feed_id = $feed";
5494                                                         else
5495                                                                 $feed_qpart = "feed_id IS NULL";
5496
5497                                                         //print "$ref_id / $feed / " . $article['title'] . "\n";
5498
5499                                                         $result = db_query($link, "SELECT int_id FROM ttrss_user_entries
5500                                                                 WHERE ref_id = '$ref_id' AND owner_uid = '$owner_uid' AND $feed_qpart");
5501
5502                                                         if (db_num_rows($result) == 0) {
5503
5504                                                                 $marked = bool_to_sql_bool(sql_bool_to_bool($article['marked']));
5505                                                                 $published = bool_to_sql_bool(sql_bool_to_bool($article['published']));
5506                                                                 $score = (int) $article['score'];
5507
5508                                                                 $tag_cache = $article['tag_cache'];
5509                                                                 $label_cache = db_escape_string($article['label_cache']);
5510                                                                 $note = $article['note'];
5511
5512                                                                 //print "Importing " . $article['title'] . "<br/>";
5513
5514                                                                 ++$num_imported;
5515
5516                                                                 $result = db_query($link,
5517                                                                         "INSERT INTO ttrss_user_entries
5518                                                                         (ref_id, owner_uid, feed_id, unread, last_read, marked,
5519                                                                                 published, score, tag_cache, label_cache, uuid, note)
5520                                                                         VALUES ($ref_id, $owner_uid, $feed, false,
5521                                                                                 NULL, $marked, $published, $score, '$tag_cache',
5522                                                                                         '$label_cache', '', '$note')");
5523
5524                                                                 $label_cache = json_decode($label_cache, true);
5525
5526                                                                 if (is_array($label_cache) && $label_cache["no-labels"] != 1) {
5527                                                                         foreach ($label_cache as $label) {
5528
5529                                                                                 label_create($link, $label[1],
5530                                                                                         $label[2], $label[3], $owner_uid);
5531
5532                                                                                 label_add_article($link, $ref_id, $label[1], $owner_uid);
5533
5534                                                                         }
5535                                                                 }
5536
5537                                                                 //db_query($link, "COMMIT");
5538                                                         }
5539                                                 }
5540                                         }
5541                                 }
5542                         }
5543
5544                         print "<p>" .
5545                                 T_sprintf("Finished: %d articles processed, %d imported, %d feeds created.",
5546                                         $num_processed, $num_imported, $num_feeds_created) .
5547                                         "</p>";
5548
5549                 } else {
5550
5551                         print "<p>" . __("Could not load XML document.") . "</p>";
5552
5553                 }
5554         }
5555
5556         function get_random_bytes($length) {
5557                 if (function_exists('openssl_random_pseudo_bytes')) {
5558                         return openssl_random_pseudo_bytes($length);
5559                 } else {
5560                         $output = "";
5561
5562                         for ($i = 0; $i < $length; $i++)
5563                                 $output .= chr(mt_rand(0, 255));
5564
5565                         return $output;
5566                 }
5567         }
5568
5569         function read_stdin() {
5570                 $fp = fopen("php://stdin", "r");
5571
5572                 if ($fp) {
5573                         $line = trim(fgets($fp));
5574                         fclose($fp);
5575                         return $line;
5576                 }
5577
5578                 return null;
5579         }
5580
5581         function tmpdirname($path, $prefix) {
5582                 // Use PHP's tmpfile function to create a temporary
5583                 // directory name. Delete the file and keep the name.
5584                 $tempname = tempnam($path,$prefix);
5585                 if (!$tempname)
5586                         return false;
5587
5588                 if (!unlink($tempname))
5589                         return false;
5590
5591        return $tempname;
5592         }
5593
5594         function getFeedCategory($link, $feed) {
5595                 $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
5596                         WHERE id = '$feed'");
5597
5598                 if (db_num_rows($result) > 0) {
5599                         return db_fetch_result($result, 0, "cat_id");
5600                 } else {
5601                         return false;
5602                 }
5603
5604         }
5605
5606         function create_published_article($link, $title, $url, $content, $owner_uid) {
5607                 $guid = sha1($url);
5608                 $content_hash = sha1($content);
5609
5610                 $rc = false;
5611
5612                 if (!$title) $title = $url;
5613                 if (!$title && !$url) return false;
5614
5615                 if (filter_var($url, FILTER_VALIDATE_URL) === FALSE) return false;
5616
5617                 db_query($link, "BEGIN");
5618
5619                 // only check for our user data here, others might have shared this with different content etc
5620                 $result = db_query($link, "SELECT id FROM ttrss_entries, ttrss_user_entries WHERE
5621                         link = '$url' AND ref_id = id AND owner_uid = '$owner_uid' LIMIT 1");
5622
5623                 if (db_num_rows($result) != 0) {
5624                         $ref_id = db_fetch_result($result, 0, "id");
5625
5626                         $result = db_query($link, "SELECT int_id FROM ttrss_user_entries WHERE
5627                                 ref_id = '$ref_id' AND owner_uid = '$owner_uid' LIMIT 1");
5628
5629                         if (db_num_rows($result) != 0) {
5630                                 $int_id = db_fetch_result($result, 0, "int_id");
5631
5632                                 db_query($link, "UPDATE ttrss_entries SET
5633                                         content = '$content', content_hash = '$content_hash' WHERE id = '$ref_id'");
5634
5635                                 db_query($link, "UPDATE ttrss_user_entries SET published = true WHERE
5636                                                 int_id = '$int_id' AND owner_uid = '$owner_uid'");
5637                         } else {
5638
5639                                 db_query($link, "INSERT INTO ttrss_user_entries
5640                                         (ref_id, uuid, feed_id, orig_feed_id, owner_uid, published, tag_cache, label_cache, last_read, note, unread)
5641                                         VALUES
5642                                         ('$ref_id', '', NULL, NULL, $owner_uid, true, '', '', NOW(), '', false)");
5643                         }
5644
5645                         $rc = true;
5646
5647                 } else {
5648                         $result = db_query($link, "INSERT INTO ttrss_entries
5649                                 (title, guid, link, updated, content, content_hash, date_entered, date_updated)
5650                                 VALUES
5651                                 ('$title', '$guid', '$url', NOW(), '$content', '$content_hash', NOW(), NOW())");
5652
5653                         $result = db_query($link, "SELECT id FROM ttrss_entries WHERE guid = '$guid'");
5654
5655                         if (db_num_rows($result) != 0) {
5656                                 $ref_id = db_fetch_result($result, 0, "id");
5657
5658                                 db_query($link, "INSERT INTO ttrss_user_entries
5659                                         (ref_id, uuid, feed_id, orig_feed_id, owner_uid, published, tag_cache, label_cache, last_read, note, unread)
5660                                         VALUES
5661                                         ('$ref_id', '', NULL, NULL, $owner_uid, true, '', '', NOW(), '', false)");
5662
5663                                 $rc = true;
5664                         }
5665                 }
5666
5667                 db_query($link, "COMMIT");
5668
5669                 return $rc;
5670         }
5671
5672 ?>