include/functions.php

   1 <?php
   2         date_default_timezone_set('UTC');
   3         if (defined('E_DEPRECATED')) {
   4                 error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
   5         } else {
   6                 error_reporting(E_ALL & ~E_NOTICE);
   7         }
   8
   9         require_once 'config.php';
  10
  11         if (DB_TYPE == "pgsql") {
  12                 define('SUBSTRING_FOR_DATE', 'SUBSTRING_FOR_DATE');
  13         } else {
  14                 define('SUBSTRING_FOR_DATE', 'SUBSTRING');
  15         }
  16
  17         define('THEME_VERSION_REQUIRED', 1.1);
  18
  19         /**
  20          * Return available translations names.
  21          *
  22          * @access public
  23          * @return array A array of available translations.
  24          */
  25         function get_translations() {
  26                 $tr = array(
  27                                         "auto"  => "Detect automatically",
  28                                         "ca_CA" => "Català",
  29                                         "en_US" => "English",
  30                                         "es_ES" => "Español",
  31                                         "de_DE" => "Deutsch",
  32                                         "fr_FR" => "Français",
  33                                         "hu_HU" => "Magyar (Hungarian)",
  34                                         "it_IT" => "Italiano",
  35                                         "ja_JP" => "日本語 (Japanese)",
  36                                         "nb_NO" => "Norwegian bokmål",
  37                                         "ru_RU" => "Русский",
  38                                         "pt_BR" => "Portuguese/Brazil",
  39                                         "zh_CN" => "Simplified Chinese");
  40
  41                 return $tr;
  42         }
  43
  44         require_once "lib/accept-to-gettext.php";
  45         require_once "lib/gettext/gettext.inc";
  46
  47         function startup_gettext() {
  48
  49                 # Get locale from Accept-Language header
  50                 $lang = al2gt(array_keys(get_translations()), "text/html");
  51
  52                 if (defined('_TRANSLATION_OVERRIDE_DEFAULT')) {
  53                         $lang = _TRANSLATION_OVERRIDE_DEFAULT;
  54                 }
  55
  56                 if ($_COOKIE["ttrss_lang"] && $_COOKIE["ttrss_lang"] != "auto") {
  57                         $lang = $_COOKIE["ttrss_lang"];
  58                 }
  59
  60                 /* In login action of mobile version */
  61                 if ($_POST["language"] && defined('MOBILE_VERSION')) {
  62                         $lang = $_POST["language"];
  63                         $_COOKIE["ttrss_lang"] = $lang;
  64                 }
  65
  66                 if ($lang) {
  67                         if (defined('LC_MESSAGES')) {
  68                                 _setlocale(LC_MESSAGES, $lang);
  69                         } else if (defined('LC_ALL')) {
  70                                 _setlocale(LC_ALL, $lang);
  71                         }
  72
  73                         if (defined('MOBILE_VERSION')) {
  74                                 _bindtextdomain("messages", "../locale");
  75                         } else {
  76                                 _bindtextdomain("messages", "locale");
  77                         }
  78
  79                         _textdomain("messages");
  80                         _bind_textdomain_codeset("messages", "UTF-8");
  81                 }
  82         }
  83
  84         startup_gettext();
  85
  86         if (defined('MEMCACHE_SERVER')) {
  87                 $memcache = new Memcache;
  88                 $memcache->connect(MEMCACHE_SERVER, 11211);
  89         }
  90
  91         require_once 'db-prefs.php';
  92         require_once 'version.php';
  93
  94         define('MAGPIE_OUTPUT_ENCODING', 'UTF-8');
  95
  96         define('SELF_USER_AGENT', 'Tiny Tiny RSS/' . VERSION . ' (http://tt-rss.org/)');
  97         define('MAGPIE_USER_AGENT', SELF_USER_AGENT);
  98
  99         ini_set('user_agent', SELF_USER_AGENT);
 100
 101         require_once 'lib/pubsubhubbub/publisher.php';
 102
 103         $purifier = false;
 104
 105         $tz_offset = -1;
 106         $utc_tz = new DateTimeZone('UTC');
 107         $schema_version = false;
 108
 109         /**
 110          * Print a timestamped debug message.
 111          *
 112          * @param string $msg The debug message.
 113          * @return void
 114          */
 115         function _debug($msg) {
 116                 $ts = strftime("%H:%M:%S", time());
 117                 if (function_exists('posix_getpid')) {
 118                         $ts = "$ts/" . posix_getpid();
 119                 }
 120                 print "[$ts] $msg\n";
 121         } // function _debug
 122
 123         /**
 124          * Purge a feed old posts.
 125          *
 126          * @param mixed $link A database connection.
 127          * @param mixed $feed_id The id of the purged feed.
 128          * @param mixed $purge_interval Olderness of purged posts.
 129          * @param boolean $debug Set to True to enable the debug. False by default.
 130          * @access public
 131          * @return void
 132          */
 133         function purge_feed($link, $feed_id, $purge_interval, $debug = false) {
 134
 135                 if (!$purge_interval) $purge_interval = feed_purge_interval($link, $feed_id);
 136
 137                 $rows = -1;
 138
 139                 $result = db_query($link,
 140                         "SELECT owner_uid FROM ttrss_feeds WHERE id = '$feed_id'");
 141
 142                 $owner_uid = false;
 143
 144                 if (db_num_rows($result) == 1) {
 145                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 146                 }
 147
 148                 if ($purge_interval == -1 || !$purge_interval) {
 149                         if ($owner_uid) {
 150                                 ccache_update($link, $feed_id, $owner_uid);
 151                         }
 152                         return;
 153                 }
 154
 155                 if (!$owner_uid) return;
 156
 157                 if (FORCE_ARTICLE_PURGE == 0) {
 158                         $purge_unread = get_pref($link, "PURGE_UNREAD_ARTICLES",
 159                                 $owner_uid, false);
 160                 } else {
 161                         $purge_unread = true;
 162                         $purge_interval = FORCE_ARTICLE_PURGE;
 163                 }
 164
 165                 if (!$purge_unread) $query_limit = " unread = false AND ";
 166
 167                 if (DB_TYPE == "pgsql") {
 168                         $pg_version = get_pgsql_version($link);
 169
 170                         if (preg_match("/^7\./", $pg_version) || preg_match("/^8\.0/", $pg_version)) {
 171
 172                                 $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 173                                         ttrss_entries.id = ref_id AND
 174                                         marked = false AND
 175                                         feed_id = '$feed_id' AND
 176                                         $query_limit
 177                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 178
 179                         } else {
 180
 181                                 $result = db_query($link, "DELETE FROM ttrss_user_entries
 182                                         USING ttrss_entries
 183                                         WHERE ttrss_entries.id = ref_id AND
 184                                         marked = false AND
 185                                         feed_id = '$feed_id' AND
 186                                         $query_limit
 187                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 188                         }
 189
 190                         $rows = pg_affected_rows($result);
 191
 192                 } else {
 193
 194 /*                      $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 195                                 marked = false AND feed_id = '$feed_id' AND
 196                                 (SELECT date_updated FROM ttrss_entries WHERE
 197                                         id = ref_id) < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)"); */
 198
 199                         $result = db_query($link, "DELETE FROM ttrss_user_entries
 200                                 USING ttrss_user_entries, ttrss_entries
 201                                 WHERE ttrss_entries.id = ref_id AND
 202                                 marked = false AND
 203                                 feed_id = '$feed_id' AND
 204                                 $query_limit
 205                                 ttrss_entries.date_updated < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)");
 206
 207                         $rows = mysql_affected_rows($link);
 208
 209                 }
 210
 211                 ccache_update($link, $feed_id, $owner_uid);
 212
 213                 if ($debug) {
 214                         _debug("Purged feed $feed_id ($purge_interval): deleted $rows articles");
 215                 }
 216         } // function purge_feed
 217
 218         function feed_purge_interval($link, $feed_id) {
 219
 220                 $result = db_query($link, "SELECT purge_interval, owner_uid FROM ttrss_feeds
 221                         WHERE id = '$feed_id'");
 222
 223                 if (db_num_rows($result) == 1) {
 224                         $purge_interval = db_fetch_result($result, 0, "purge_interval");
 225                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 226
 227                         if ($purge_interval == 0) $purge_interval = get_pref($link,
 228                                 'PURGE_OLD_DAYS', $owner_uid);
 229
 230                         return $purge_interval;
 231
 232                 } else {
 233                         return -1;
 234                 }
 235         }
 236
 237         function purge_orphans($link, $do_output = false) {
 238
 239                 // purge orphaned posts in main content table
 240                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
 241                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
 242
 243                 if ($do_output) {
 244                         $rows = db_affected_rows($link, $result);
 245                         _debug("Purged $rows orphaned posts.");
 246                 }
 247         }
 248
 249         function get_feed_update_interval($link, $feed_id) {
 250                 $result = db_query($link, "SELECT owner_uid, update_interval FROM
 251                         ttrss_feeds WHERE id = '$feed_id'");
 252
 253                 if (db_num_rows($result) == 1) {
 254                         $update_interval = db_fetch_result($result, 0, "update_interval");
 255                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 256
 257                         if ($update_interval != 0) {
 258                                 return $update_interval;
 259                         } else {
 260                                 return get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $owner_uid, false);
 261                         }
 262
 263                 } else {
 264                         return -1;
 265                 }
 266         }
 267
 268         function fetch_file_contents($url, $type = false, $login = false, $pass = false, $post_query = false) {
 269                 $login = urlencode($login);
 270                 $pass = urlencode($pass);
 271
 272                 if (function_exists('curl_init') && !ini_get("open_basedir")) {
 273                         $ch = curl_init($url);
 274
 275                         curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 15);
 276                         curl_setopt($ch, CURLOPT_TIMEOUT, 45);
 277                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
 278                         curl_setopt($ch, CURLOPT_MAXREDIRS, 20);
 279                         curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
 280                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 281                         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 282                         curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 283                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 284                         curl_setopt($ch, CURLOPT_ENCODING , "gzip");
 285
 286                         if ($post_query) {
 287                                 curl_setopt($ch, CURLOPT_POST, true);
 288                                 curl_setopt($ch, CURLOPT_POSTFIELDS, $post_query);
 289                         }
 290
 291                         if ($login && $pass)
 292                                 curl_setopt($ch, CURLOPT_USERPWD, "$login:$pass");
 293
 294                         $contents = @curl_exec($ch);
 295
 296                         if ($contents === false) {
 297                                 curl_close($ch);
 298                                 return false;
 299                         }
 300
 301                         $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 302                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 303                         curl_close($ch);
 304
 305                         if ($http_code != 200 || $type && strpos($content_type, "$type") === false) {
 306                                 return false;
 307                         }
 308
 309                         return $contents;
 310                 } else {
 311                         if ($login && $pass ){
 312                                 $url_parts = array();
 313
 314                                 preg_match("/(^[^:]*):\/\/(.*)/", $url, $url_parts);
 315
 316                                 if ($url_parts[1] && $url_parts[2]) {
 317                                         $url = $url_parts[1] . "://$login:$pass@" . $url_parts[2];
 318                                 }
 319                         }
 320
 321                         return @file_get_contents($url);
 322                 }
 323
 324         }
 325
 326         /**
 327          * Try to determine the favicon URL for a feed.
 328          * adapted from wordpress favicon plugin by Jeff Minard (http://thecodepro.com/)
 329          * http://dev.wp-plugins.org/file/favatars/trunk/favatars.php
 330          *
 331          * @param string $url A feed or page URL
 332          * @access public
 333          * @return mixed The favicon URL, or false if none was found.
 334          */
 335         function get_favicon_url($url) {
 336
 337                 $favicon_url = false;
 338
 339                 if ($html = @fetch_file_contents($url)) {
 340
 341                         libxml_use_internal_errors(true);
 342
 343                         $doc = new DOMDocument();
 344                         $doc->loadHTML($html);
 345                         $xpath = new DOMXPath($doc);
 346
 347                         $base = $xpath->query('/html/head/base');
 348                         foreach ($base as $b) {
 349                                 $url = $b->getAttribute("href");
 350                                 break;
 351                         }
 352
 353                         $entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon"]');
 354                         if (count($entries) > 0) {
 355                                 foreach ($entries as $entry) {
 356                                         $favicon_url = rewrite_relative_url($url, $entry->getAttribute("href"));
 357                                         break;
 358                                 }
 359                         }
 360                 }
 361
 362                 if (!$favicon_url)
 363                         $favicon_url = rewrite_relative_url($url, "/favicon.ico");
 364
 365                 return $favicon_url;
 366         } // function get_favicon_url
 367
 368         function check_feed_favicon($site_url, $feed, $link) {
 369 #               print "FAVICON [$site_url]: $favicon_url\n";
 370
 371                 $icon_file = ICONS_DIR . "/$feed.ico";
 372
 373                 if (!file_exists($icon_file)) {
 374                         $favicon_url = get_favicon_url($site_url);
 375
 376                         if ($favicon_url) {
 377                                 // Limiting to "image" type misses those served with text/plain
 378                                 $contents = fetch_file_contents($favicon_url); // , "image");
 379
 380                                 if ($contents) {
 381                                         // Crude image type matching.
 382                                         // Patterns gleaned from the file(1) source code.
 383                                         if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
 384                                                 // 0       string  \000\000\001\000        MS Windows icon resource
 385                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
 386                                         }
 387                                         elseif (preg_match('/^GIF8/', $contents)) {
 388                                                 // 0       string          GIF8            GIF image data
 389                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
 390                                         }
 391                                         elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
 392                                                 // 0       string          \x89PNG\x0d\x0a\x1a\x0a         PNG image data
 393                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
 394                                         }
 395                                         elseif (preg_match('/^\xff\xd8/', $contents)) {
 396                                                 // 0       beshort         0xffd8          JPEG image data
 397                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
 398                                         }
 399                                         else {
 400                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
 401                                                 $contents = "";
 402                                         }
 403                                 }
 404
 405                                 if ($contents) {
 406                                         $fp = @fopen($icon_file, "w");
 407
 408                                         if ($fp) {
 409                                                 fwrite($fp, $contents);
 410                                                 fclose($fp);
 411                                                 chmod($icon_file, 0644);
 412                                         }
 413                                 }
 414                         }
 415                 }
 416         }
 417
 418         function print_select($id, $default, $values, $attributes = "") {
 419                 print "<select name=\"$id\" id=\"$id\" $attributes>";
 420                 foreach ($values as $v) {
 421                         if ($v == $default)
 422                                 $sel = "selected=\"1\"";
 423                          else
 424                                 $sel = "";
 425
 426                         print "<option value=\"$v\" $sel>$v</option>";
 427                 }
 428                 print "</select>";
 429         }
 430
 431         function print_select_hash($id, $default, $values, $attributes = "") {
 432                 print "<select name=\"$id\" id='$id' $attributes>";
 433                 foreach (array_keys($values) as $v) {
 434                         if ($v == $default)
 435                                 $sel = 'selected="selected"';
 436                          else
 437                                 $sel = "";
 438
 439                         print "<option $sel value=\"$v\">".$values[$v]."</option>";
 440                 }
 441
 442                 print "</select>";
 443         }
 444
 445         function get_article_filters($filters, $title, $content, $link, $timestamp, $author, $tags) {
 446                 $matches = array();
 447
 448                 if ($filters["title"]) {
 449                         foreach ($filters["title"] as $filter) {
 450                                 $reg_exp = $filter["reg_exp"];
 451                                 $inverse = $filter["inverse"];
 452                                 if ((!$inverse && @preg_match("/$reg_exp/i", $title)) ||
 453                                                 ($inverse && !@preg_match("/$reg_exp/i", $title))) {
 454
 455                                         array_push($matches, array($filter["action"], $filter["action_param"]));
 456                                 }
 457                         }
 458                 }
 459
 460                 if ($filters["content"]) {
 461                         foreach ($filters["content"] as $filter) {
 462                                 $reg_exp = $filter["reg_exp"];
 463                                 $inverse = $filter["inverse"];
 464
 465                                 if ((!$inverse && @preg_match("/$reg_exp/i", $content)) ||
 466                                                 ($inverse && !@preg_match("/$reg_exp/i", $content))) {
 467
 468                                         array_push($matches, array($filter["action"], $filter["action_param"]));
 469                                 }
 470                         }
 471                 }
 472
 473                 if ($filters["both"]) {
 474                         foreach ($filters["both"] as $filter) {
 475                                 $reg_exp = $filter["reg_exp"];
 476                                 $inverse = $filter["inverse"];
 477
 478                                 if ($inverse) {
 479                                         if (!@preg_match("/$reg_exp/i", $title) && !preg_match("/$reg_exp/i", $content)) {
 480                                                 array_push($matches, array($filter["action"], $filter["action_param"]));
 481                                         }
 482                                 } else {
 483                                         if (@preg_match("/$reg_exp/i", $title) || preg_match("/$reg_exp/i", $content)) {
 484                                                 array_push($matches, array($filter["action"], $filter["action_param"]));
 485                                         }
 486                                 }
 487                         }
 488                 }
 489
 490                 if ($filters["link"]) {
 491                         $reg_exp = $filter["reg_exp"];
 492                         foreach ($filters["link"] as $filter) {
 493                                 $reg_exp = $filter["reg_exp"];
 494                                 $inverse = $filter["inverse"];
 495
 496                                 if ((!$inverse && @preg_match("/$reg_exp/i", $link)) ||
 497                                                 ($inverse && !@preg_match("/$reg_exp/i", $link))) {
 498
 499                                         array_push($matches, array($filter["action"], $filter["action_param"]));
 500                                 }
 501                         }
 502                 }
 503
 504                 if ($filters["date"]) {
 505                         $reg_exp = $filter["reg_exp"];
 506                         foreach ($filters["date"] as $filter) {
 507                                 $date_modifier = $filter["filter_param"];
 508                                 $inverse = $filter["inverse"];
 509                                 $check_timestamp = strtotime($filter["reg_exp"]);
 510
 511                                 # no-op when timestamp doesn't parse to prevent misfires
 512
 513                                 if ($check_timestamp) {
 514                                         $match_ok = false;
 515
 516                                         if ($date_modifier == "before" && $timestamp < $check_timestamp ||
 517                                                 $date_modifier == "after" && $timestamp > $check_timestamp) {
 518                                                         $match_ok = true;
 519                                         }
 520
 521                                         if ($inverse) $match_ok = !$match_ok;
 522
 523                                         if ($match_ok) {
 524                                                 array_push($matches, array($filter["action"], $filter["action_param"]));
 525                                         }
 526                                 }
 527                         }
 528                 }
 529
 530                 if ($filters["author"]) {
 531                         foreach ($filters["author"] as $filter) {
 532                                 $reg_exp = $filter["reg_exp"];
 533                                 $inverse = $filter["inverse"];
 534                                 if ((!$inverse && @preg_match("/$reg_exp/i", $author)) ||
 535                                                 ($inverse && !@preg_match("/$reg_exp/i", $author))) {
 536
 537                                         array_push($matches, array($filter["action"], $filter["action_param"]));
 538                                 }
 539                         }
 540                 }
 541
 542                 if ($filters["tag"]) {
 543
 544                         $tag_string = join(",", $tags);
 545
 546                         foreach ($filters["tag"] as $filter) {
 547                                 $reg_exp = $filter["reg_exp"];
 548                                 $inverse = $filter["inverse"];
 549
 550                                 if ((!$inverse && @preg_match("/$reg_exp/i", $tag_string)) ||
 551                                                 ($inverse && !@preg_match("/$reg_exp/i", $tag_string))) {
 552
 553                                         array_push($matches, array($filter["action"], $filter["action_param"]));
 554                                 }
 555                         }
 556                 }
 557
 558
 559                 return $matches;
 560         }
 561
 562         function find_article_filter($filters, $filter_name) {
 563                 foreach ($filters as $f) {
 564                         if ($f[0] == $filter_name) {
 565                                 return $f;
 566                         };
 567                 }
 568                 return false;
 569         }
 570
 571         function calculate_article_score($filters) {
 572                 $score = 0;
 573
 574                 foreach ($filters as $f) {
 575                         if ($f[0] == "score") {
 576                                 $score += $f[1];
 577                         };
 578                 }
 579                 return $score;
 580         }
 581
 582         function assign_article_to_labels($link, $id, $filters, $owner_uid) {
 583                 foreach ($filters as $f) {
 584                         if ($f[0] == "label") {
 585                                 label_add_article($link, $id, $f[1], $owner_uid);
 586                         };
 587                 }
 588         }
 589
 590         function getmicrotime() {
 591                 list($usec, $sec) = explode(" ",microtime());
 592                 return ((float)$usec + (float)$sec);
 593         }
 594
 595         function print_radio($id, $default, $true_is, $values, $attributes = "") {
 596                 foreach ($values as $v) {
 597
 598                         if ($v == $default)
 599                                 $sel = "checked";
 600                          else
 601                                 $sel = "";
 602
 603                         if ($v == $true_is) {
 604                                 $sel .= " value=\"1\"";
 605                         } else {
 606                                 $sel .= " value=\"0\"";
 607                         }
 608
 609                         print "<input class=\"noborder\" dojoType=\"dijit.form.RadioButton\"
 610                                 type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 611
 612                 }
 613         }
 614
 615         function initialize_user_prefs($link, $uid, $profile = false) {
 616
 617                 $uid = db_escape_string($uid);
 618
 619                 if (!$profile) {
 620                         $profile = "NULL";
 621                         $profile_qpart = "AND profile IS NULL";
 622                 } else {
 623                         $profile_qpart = "AND profile = '$profile'";
 624                 }
 625
 626                 if (get_schema_version($link) < 63) $profile_qpart = "";
 627
 628                 db_query($link, "BEGIN");
 629
 630                 $result = db_query($link, "SELECT pref_name,def_value FROM ttrss_prefs");
 631
 632                 $u_result = db_query($link, "SELECT pref_name
 633                         FROM ttrss_user_prefs WHERE owner_uid = '$uid' $profile_qpart");
 634
 635                 $active_prefs = array();
 636
 637                 while ($line = db_fetch_assoc($u_result)) {
 638                         array_push($active_prefs, $line["pref_name"]);
 639                 }
 640
 641                 while ($line = db_fetch_assoc($result)) {
 642                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 643 //                              print "adding " . $line["pref_name"] . "<br>";
 644
 645                                 if (get_schema_version($link) < 63) {
 646                                         db_query($link, "INSERT INTO ttrss_user_prefs
 647                                                 (owner_uid,pref_name,value) VALUES
 648                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 649
 650                                 } else {
 651                                         db_query($link, "INSERT INTO ttrss_user_prefs
 652                                                 (owner_uid,pref_name,value, profile) VALUES
 653                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."', $profile)");
 654                                 }
 655
 656                         }
 657                 }
 658
 659                 db_query($link, "COMMIT");
 660
 661         }
 662
 663         function get_ssl_certificate_id() {
 664                 if ($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"]) {
 665                         return sha1($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"] .
 666                                 $_SERVER["REDIRECT_SSL_CLIENT_V_START"] .
 667                                 $_SERVER["REDIRECT_SSL_CLIENT_V_END"] .
 668                                 $_SERVER["REDIRECT_SSL_CLIENT_S_DN"]);
 669                 }
 670                 return "";
 671         }
 672
 673         function get_login_by_ssl_certificate($link) {
 674
 675                 $cert_serial = db_escape_string(get_ssl_certificate_id());
 676
 677                 if ($cert_serial) {
 678                         $result = db_query($link, "SELECT login FROM ttrss_user_prefs, ttrss_users
 679                                 WHERE pref_name = 'SSL_CERT_SERIAL' AND value = '$cert_serial' AND
 680                                 owner_uid = ttrss_users.id");
 681
 682                         if (db_num_rows($result) != 0) {
 683                                 return db_escape_string(db_fetch_result($result, 0, "login"));
 684                         }
 685                 }
 686
 687                 return "";
 688         }
 689
 690         function get_remote_user($link) {
 691
 692                 if (defined('ALLOW_REMOTE_USER_AUTH') && ALLOW_REMOTE_USER_AUTH) {
 693                         return db_escape_string($_SERVER["REMOTE_USER"]);
 694                 }
 695
 696                 return db_escape_string(get_login_by_ssl_certificate($link));
 697         }
 698
 699         function get_remote_fakepass($link) {
 700                 if (get_remote_user($link))
 701                         return "******";
 702                 else
 703                         return "";
 704         }
 705
 706         function authenticate_user($link, $login, $password, $force_auth = false) {
 707
 708                 if (!SINGLE_USER_MODE) {
 709
 710                         $pwd_hash1 = encrypt_password($password);
 711                         $pwd_hash2 = encrypt_password($password, $login);
 712                         $login = db_escape_string($login);
 713
 714                         $remote_user = get_remote_user($link);
 715
 716                         if ($remote_user && $remote_user == $login && $login != "admin") {
 717
 718                                 $login = $remote_user;
 719
 720                                 $query = "SELECT id,login,access_level,pwd_hash
 721                     FROM ttrss_users WHERE
 722                                         login = '$login'";
 723
 724                                 if (defined('AUTO_CREATE_USER') && AUTO_CREATE_USER
 725                                                 && $_SERVER["REMOTE_USER"]) {
 726                                         $result = db_query($link, $query);
 727
 728                                         // First login ?
 729                                         if (db_num_rows($result) == 0) {
 730                                                 $salt = substr(bin2hex(get_random_bytes(125)), 0, 250);
 731                                                 $pwd_hash = encrypt_password($password, $salt, true);
 732
 733                                                 $query2 = "INSERT INTO ttrss_users
 734                                                                 (login,access_level,last_login,created,pwd_hash,salt)
 735                                                                 VALUES ('$login', 0, null, NOW(), '$pwd_hash','$salt')";
 736                                                 db_query($link, $query2);
 737                                         }
 738                                 }
 739
 740                         } else if (get_schema_version($link) > 87) {
 741                                 $result = db_query($link, "SELECT salt FROM ttrss_users WHERE
 742                                         login = '$login'");
 743
 744                                 if (db_num_rows($result) != 1) {
 745                                         return false;
 746                                 }
 747
 748                                 $salt = db_fetch_result($result, 0, "salt");
 749
 750                                 if ($salt == "") {
 751
 752                                         $query = "SELECT id,login,access_level,pwd_hash
 753                             FROM ttrss_users WHERE
 754                                                 login = '$login' AND (pwd_hash = '$pwd_hash1' OR
 755                                                 pwd_hash = '$pwd_hash2')";
 756
 757                                         // verify and upgrade password to new salt base
 758
 759                                         $result = db_query($link, $query);
 760
 761                                         if (db_num_rows($result) == 1) {
 762                                                 // upgrade password to MODE2
 763
 764                                                 $salt = substr(bin2hex(get_random_bytes(125)), 0, 250);
 765                                                 $pwd_hash = encrypt_password($password, $salt, true);
 766
 767                                                 db_query($link, "UPDATE ttrss_users SET
 768                                                         pwd_hash = '$pwd_hash', salt = '$salt' WHERE login = '$login'");
 769
 770                                                 $query = "SELECT id,login,access_level,pwd_hash
 771                                     FROM ttrss_users WHERE
 772                                                         login = '$login' AND pwd_hash = '$pwd_hash'";
 773
 774                                         } else {
 775                                                 return false;
 776                                         }
 777
 778                                 } else {
 779
 780                                         $pwd_hash = encrypt_password($password, $salt, true);
 781
 782                                         $query = "SELECT id,login,access_level,pwd_hash
 783                                  FROM ttrss_users WHERE
 784                                                 login = '$login' AND pwd_hash = '$pwd_hash'";
 785
 786                                 }
 787                         } else {
 788                                 $query = "SELECT id,login,access_level,pwd_hash
 789                          FROM ttrss_users WHERE
 790                                         login = '$login' AND (pwd_hash = '$pwd_hash1' OR
 791                                                 pwd_hash = '$pwd_hash2')";
 792                         }
 793
 794                         $result = db_query($link, $query);
 795
 796                         if (db_num_rows($result) == 1) {
 797                                 $_SESSION["uid"] = db_fetch_result($result, 0, "id");
 798                                 $_SESSION["name"] = db_fetch_result($result, 0, "login");
 799                                 $_SESSION["access_level"] = db_fetch_result($result, 0, "access_level");
 800                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 801
 802                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 803                                         $_SESSION["uid"]);
 804
 805
 806                                 // LemonLDAP can send user informations via HTTP HEADER
 807                                 if (defined('AUTO_CREATE_USER') && AUTO_CREATE_USER){
 808                                         // update user name
 809                                         $fullname = $_SERVER['HTTP_USER_NAME'] ? $_SERVER['HTTP_USER_NAME'] : $_SERVER['AUTHENTICATE_CN'];
 810                                         if ($fullname){
 811                                                 $fullname = db_escape_string($fullname);
 812                                                 db_query($link, "UPDATE ttrss_users SET full_name = '$fullname' WHERE id = " .
 813                                                         $_SESSION["uid"]);
 814                                         }
 815                                         // update user mail
 816                                         $email = $_SERVER['HTTP_USER_MAIL'] ? $_SERVER['HTTP_USER_MAIL'] : $_SERVER['AUTHENTICATE_MAIL'];
 817                                         if ($email){
 818                                                 $email = db_escape_string($email);
 819                                                 db_query($link, "UPDATE ttrss_users SET email = '$email' WHERE id = " .
 820                                                         $_SESSION["uid"]);
 821                                         }
 822                                 }
 823
 824                                 $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 825                                 $_SESSION["pwd_hash"] = db_fetch_result($result, 0, "pwd_hash");
 826
 827                                 $_SESSION["last_version_check"] = time();
 828
 829                                 initialize_user_prefs($link, $_SESSION["uid"]);
 830
 831                                 return true;
 832                         }
 833
 834                         return false;
 835
 836                 } else {
 837
 838                         $_SESSION["uid"] = 1;
 839                         $_SESSION["name"] = "admin";
 840                         $_SESSION["access_level"] = 10;
 841
 842                         if (!$_SESSION["csrf_token"]) {
 843                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 844                         }
 845
 846                         $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 847
 848                         initialize_user_prefs($link, $_SESSION["uid"]);
 849
 850                         return true;
 851                 }
 852         }
 853
 854         function make_password($length = 8) {
 855
 856                 $password = "";
 857                 $possible = "0123456789abcdfghjkmnpqrstvwxyzABCDFGHJKMNPQRSTVWXYZ";
 858
 859         $i = 0;
 860
 861                 while ($i < $length) {
 862                         $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 863
 864                         if (!strstr($password, $char)) {
 865                                 $password .= $char;
 866                                 $i++;
 867                         }
 868                 }
 869                 return $password;
 870         }
 871
 872         // this is called after user is created to initialize default feeds, labels
 873         // or whatever else
 874
 875         // user preferences are checked on every login, not here
 876
 877         function initialize_user($link, $uid) {
 878
 879                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 880                         values ('$uid', 'Tiny Tiny RSS: New Releases',
 881                         'http://tt-rss.org/releases.rss')");
 882
 883                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 884                         values ('$uid', 'Tiny Tiny RSS: Forum',
 885                                 'http://tt-rss.org/forum/rss.php')");
 886         }
 887
 888         function logout_user() {
 889                 session_destroy();
 890                 if (isset($_COOKIE[session_name()])) {
 891                    setcookie(session_name(), '', time()-42000, '/');
 892                 }
 893         }
 894
 895         function validate_csrf($csrf_token) {
 896                 return $csrf_token == $_SESSION['csrf_token'];
 897         }
 898
 899         function validate_session($link) {
 900                 if (SINGLE_USER_MODE) return true;
 901
 902                 $check_ip = $_SESSION['ip_address'];
 903
 904                 switch (SESSION_CHECK_ADDRESS) {
 905                 case 0:
 906                         $check_ip = '';
 907                         break;
 908                 case 1:
 909                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 910                         break;
 911                 case 2:
 912                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.'));
 913                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 914                         break;
 915                 };
 916
 917                 if ($check_ip && strpos($_SERVER['REMOTE_ADDR'], $check_ip) !== 0) {
 918                         $_SESSION["login_error_msg"] =
 919                                 __("Session failed to validate (incorrect IP)");
 920                         return false;
 921                 }
 922
 923                 if ($_SESSION["ref_schema_version"] != get_schema_version($link, true))
 924                         return false;
 925
 926                 if ($_SESSION["uid"]) {
 927
 928                         $result = db_query($link,
 929                                 "SELECT pwd_hash FROM ttrss_users WHERE id = '".$_SESSION["uid"]."'");
 930
 931                         $pwd_hash = db_fetch_result($result, 0, "pwd_hash");
 932
 933                         if ($pwd_hash != $_SESSION["pwd_hash"]) {
 934                                 return false;
 935                         }
 936                 }
 937
 938 /*              if ($_SESSION["cookie_lifetime"] && $_SESSION["uid"]) {
 939
 940                         //print_r($_SESSION);
 941
 942                         if (time() > $_SESSION["cookie_lifetime"]) {
 943                                 return false;
 944                         }
 945                 } */
 946
 947                 return true;
 948         }
 949
 950         function login_sequence($link, $mobile = false) {
 951                 $_SESSION["prefs_cache"] = array();
 952
 953                 if (!SINGLE_USER_MODE) {
 954
 955                         $login_action = $_POST["login_action"];
 956
 957                         # try to authenticate user if called from login form
 958                         if ($login_action == "do_login") {
 959                                 $login = db_escape_string($_POST["login"]);
 960                                 $password = $_POST["password"];
 961                                 $remember_me = $_POST["remember_me"];
 962
 963                                 if (authenticate_user($link, $login, $password)) {
 964                                         $_POST["password"] = "";
 965
 966                                         $_SESSION["language"] = $_POST["language"];
 967                                         $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 968                                         $_SESSION["bw_limit"] = !!$_POST["bw_limit"];
 969
 970                                         if ($_POST["profile"]) {
 971
 972                                                 $profile = db_escape_string($_POST["profile"]);
 973
 974                                                 $result = db_query($link, "SELECT id FROM ttrss_settings_profiles
 975                                                         WHERE id = '$profile' AND owner_uid = " . $_SESSION["uid"]);
 976
 977                                                 if (db_num_rows($result) != 0) {
 978                                                         $_SESSION["profile"] = $profile;
 979                                                         $_SESSION["prefs_cache"] = array();
 980                                                 }
 981                                         }
 982
 983                                         if ($_REQUEST['return']) {
 984                                                 header("Location: " . $_REQUEST['return']);
 985                                         } else {
 986                                                 header("Location: " . $_SERVER["REQUEST_URI"]);
 987                                         }
 988
 989                                         exit;
 990
 991                                         return;
 992                                 } else {
 993                                         $_SESSION["login_error_msg"] = __("Incorrect username or password");
 994                                 }
 995                         }
 996
 997                         if (!$_SESSION["uid"] || !validate_session($link)) {
 998
 999                                 if (get_remote_user($link) && AUTO_LOGIN) {
1000                                     authenticate_user($link, get_remote_user($link), null);
1001                                     $_SESSION["ref_schema_version"] = get_schema_version($link, true);
1002                                 } else {
1003                                     render_login_form($link, $mobile);
1004                                     //header("Location: login.php");
1005                                     exit;
1006                                 }
1007                         } else {
1008                                 /* bump login timestamp */
1009                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
1010                                         $_SESSION["uid"]);
1011
1012                                 if ($_SESSION["language"] && SESSION_COOKIE_LIFETIME > 0) {
1013                                         setcookie("ttrss_lang", $_SESSION["language"],
1014                                                 time() + SESSION_COOKIE_LIFETIME);
1015                                 }
1016
1017                                 // try to remove possible duplicates from feed counter cache
1018 //                              ccache_cleanup($link, $_SESSION["uid"]);
1019                         }
1020
1021                 } else {
1022                         return authenticate_user($link, "admin", null);
1023                 }
1024         }
1025
1026         function truncate_string($str, $max_len, $suffix = '&hellip;') {
1027                 if (mb_strlen($str, "utf-8") > $max_len - 3) {
1028                         return mb_substr($str, 0, $max_len, "utf-8") . $suffix;
1029                 } else {
1030                         return $str;
1031                 }
1032         }
1033
1034         function theme_image($link, $filename) {
1035                 if ($link) {
1036                         $theme_path = get_user_theme_path($link);
1037
1038                         if ($theme_path && is_file($theme_path.$filename)) {
1039                                 return $theme_path.$filename;
1040                         } else {
1041                                 return $filename;
1042                         }
1043                 } else {
1044                         return $filename;
1045                 }
1046         }
1047
1048         function get_user_theme($link) {
1049
1050                 if (get_schema_version($link) >= 63 && $_SESSION["uid"]) {
1051                         $theme_name = get_pref($link, "_THEME_ID");
1052                         if (is_dir("themes/$theme_name")) {
1053                                 return $theme_name;
1054                         } else {
1055                                 return '';
1056                         }
1057                 } else {
1058                         return '';
1059                 }
1060
1061         }
1062
1063         function get_user_theme_path($link) {
1064                 $theme_path = '';
1065
1066                 if (get_schema_version($link) >= 63 && $_SESSION["uid"]) {
1067                         $theme_name = get_pref($link, "_THEME_ID");
1068
1069                         if ($theme_name && is_dir("themes/$theme_name")) {
1070                                 $theme_path = "themes/$theme_name/";
1071                         } else {
1072                                 $theme_name = '';
1073                         }
1074                 } else {
1075                         $theme_path = '';
1076                 }
1077
1078                 if ($theme_path) {
1079                         if (is_file("$theme_path/theme.ini")) {
1080                                 $ini = parse_ini_file("$theme_path/theme.ini", true);
1081                                 if ($ini['theme']['version'] >= THEME_VERSION_REQUIRED) {
1082                                         return $theme_path;
1083                                 }
1084                         }
1085                 }
1086                 return '';
1087         }
1088
1089         function get_user_theme_options($link) {
1090                 $t = get_user_theme_path($link);
1091
1092                 if ($t) {
1093                         if (is_file("$t/theme.ini")) {
1094                                 $ini = parse_ini_file("$t/theme.ini", true);
1095                                 if ($ini['theme']['version']) {
1096                                         return $ini['theme']['options'];
1097                                 }
1098                         }
1099                 }
1100                 return '';
1101         }
1102
1103         function print_theme_includes($link) {
1104
1105                 $t = get_user_theme_path($link);
1106                 $time = time();
1107
1108                 if ($t) {
1109                         print "<link rel=\"stylesheet\" type=\"text/css\"
1110                                 href=\"$t/theme.css?$time \">";
1111                         if (file_exists("$t/theme.js")) {
1112                                 print "<script type=\"text/javascript\" src=\"$t/theme.js?$time\">
1113                                         </script>";
1114                         }
1115                 }
1116         }
1117
1118         function get_all_themes() {
1119                 $themes = glob("themes/*");
1120
1121                 asort($themes);
1122
1123                 $rv = array();
1124
1125                 foreach ($themes as $t) {
1126                         if (is_file("$t/theme.ini")) {
1127                                 $ini = parse_ini_file("$t/theme.ini", true);
1128                                 if ($ini['theme']['version'] >= THEME_VERSION_REQUIRED &&
1129                                                         !$ini['theme']['disabled']) {
1130                                         $entry = array();
1131                                         $entry["path"] = $t;
1132                                         $entry["base"] = basename($t);
1133                                         $entry["name"] = $ini['theme']['name'];
1134                                         $entry["version"] = $ini['theme']['version'];
1135                                         $entry["author"] = $ini['theme']['author'];
1136                                         $entry["options"] = $ini['theme']['options'];
1137                                         array_push($rv, $entry);
1138                                 }
1139                         }
1140                 }
1141
1142                 return $rv;
1143         }
1144
1145         function convert_timestamp($timestamp, $source_tz, $dest_tz) {
1146
1147                 try {
1148                         $source_tz = new DateTimeZone($source_tz);
1149                 } catch (Exception $e) {
1150                         $source_tz = new DateTimeZone('UTC');
1151                 }
1152
1153                 try {
1154                         $dest_tz = new DateTimeZone($dest_tz);
1155                 } catch (Exception $e) {
1156                         $dest_tz = new DateTimeZone('UTC');
1157                 }
1158
1159                 $dt = new DateTime(date('Y-m-d H:i:s', $timestamp), $source_tz);
1160                 return $dt->format('U') + $dest_tz->getOffset($dt);
1161         }
1162
1163         function make_local_datetime($link, $timestamp, $long, $owner_uid = false,
1164                                         $no_smart_dt = false) {
1165
1166                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
1167                 if (!$timestamp) $timestamp = '1970-01-01 0:00';
1168
1169                 global $utc_tz;
1170                 global $tz_offset;
1171
1172                 # We store date in UTC internally
1173                 $dt = new DateTime($timestamp, $utc_tz);
1174
1175                 if ($tz_offset == -1) {
1176
1177                         $user_tz_string = get_pref($link, 'USER_TIMEZONE', $owner_uid);
1178
1179                         try {
1180                                 $user_tz = new DateTimeZone($user_tz_string);
1181                         } catch (Exception $e) {
1182                                 $user_tz = $utc_tz;
1183                         }
1184
1185                         $tz_offset = $user_tz->getOffset($dt);
1186                 }
1187
1188                 $user_timestamp = $dt->format('U') + $tz_offset;
1189
1190                 if (!$no_smart_dt) {
1191                         return smart_date_time($link, $user_timestamp,
1192                                 $tz_offset, $owner_uid);
1193                 } else {
1194                         if ($long)
1195                                 $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
1196                         else
1197                                 $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
1198
1199                         return date($format, $user_timestamp);
1200                 }
1201         }
1202
1203         function smart_date_time($link, $timestamp, $tz_offset = 0, $owner_uid = false) {
1204                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
1205
1206                 if (date("Y.m.d", $timestamp) == date("Y.m.d", time() + $tz_offset)) {
1207                         return date("G:i", $timestamp);
1208                 } else if (date("Y", $timestamp) == date("Y", time() + $tz_offset)) {
1209                         $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
1210                         return date($format, $timestamp);
1211                 } else {
1212                         $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
1213                         return date($format, $timestamp);
1214                 }
1215         }
1216
1217         function sql_bool_to_bool($s) {
1218                 if ($s == "t" || $s == "1" || $s == "true") {
1219                         return true;
1220                 } else {
1221                         return false;
1222                 }
1223         }
1224
1225         function bool_to_sql_bool($s) {
1226                 if ($s) {
1227                         return "true";
1228                 } else {
1229                         return "false";
1230                 }
1231         }
1232
1233         // Session caching removed due to causing wrong redirects to upgrade
1234         // script when get_schema_version() is called on an obsolete session
1235         // created on a previous schema version.
1236         function get_schema_version($link, $nocache = false) {
1237                 global $schema_version;
1238
1239                 if (!$schema_version) {
1240                         $result = db_query($link, "SELECT schema_version FROM ttrss_version");
1241                         $version = db_fetch_result($result, 0, "schema_version");
1242                         $schema_version = $version;
1243                         return $version;
1244                 } else {
1245                         return $schema_version;
1246                 }
1247         }
1248
1249         function sanity_check($link) {
1250                 require_once 'errors.php';
1251
1252                 $error_code = 0;
1253                 $schema_version = get_schema_version($link, true);
1254
1255                 if ($schema_version != SCHEMA_VERSION) {
1256                         $error_code = 5;
1257                 }
1258
1259                 if (DB_TYPE == "mysql") {
1260                         $result = db_query($link, "SELECT true", false);
1261                         if (db_num_rows($result) != 1) {
1262                                 $error_code = 10;
1263                         }
1264                 }
1265
1266                 if (db_escape_string("testTEST") != "testTEST") {
1267                         $error_code = 12;
1268                 }
1269
1270                 return array("code" => $error_code, "message" => $ERRORS[$error_code]);
1271         }
1272
1273         function file_is_locked($filename) {
1274                 if (function_exists('flock')) {
1275                         $fp = @fopen(LOCK_DIRECTORY . "/$filename", "r");
1276                         if ($fp) {
1277                                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1278                                         flock($fp, LOCK_UN);
1279                                         fclose($fp);
1280                                         return false;
1281                                 }
1282                                 fclose($fp);
1283                                 return true;
1284                         } else {
1285                                 return false;
1286                         }
1287                 }
1288                 return true; // consider the file always locked and skip the test
1289         }
1290
1291         function make_lockfile($filename) {
1292                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
1293
1294                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1295                         if (function_exists('posix_getpid')) {
1296                                 fwrite($fp, posix_getpid() . "\n");
1297                         }
1298                         return $fp;
1299                 } else {
1300                         return false;
1301                 }
1302         }
1303
1304         function make_stampfile($filename) {
1305                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
1306
1307                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1308                         fwrite($fp, time() . "\n");
1309                         flock($fp, LOCK_UN);
1310                         fclose($fp);
1311                         return true;
1312                 } else {
1313                         return false;
1314                 }
1315         }
1316
1317         function sql_random_function() {
1318                 if (DB_TYPE == "mysql") {
1319                         return "RAND()";
1320                 } else {
1321                         return "RANDOM()";
1322                 }
1323         }
1324
1325         function catchup_feed($link, $feed, $cat_view, $owner_uid = false, $max_id = false) {
1326
1327                         if (!$owner_uid) $owner_uid = $_SESSION['uid'];
1328
1329                         //if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
1330
1331                         $ref_check_qpart = ($max_id &&
1332                                 !get_pref($link, 'REVERSE_HEADLINES')) ? "ref_id <= '$max_id'" : "true";
1333
1334                         if (is_numeric($feed)) {
1335                                 if ($cat_view) {
1336
1337                                         if ($feed >= 0) {
1338
1339                                                 if ($feed > 0) {
1340                                                         $cat_qpart = "cat_id = '$feed'";
1341                                                 } else {
1342                                                         $cat_qpart = "cat_id IS NULL";
1343                                                 }
1344
1345                                                 $tmp_result = db_query($link, "SELECT id
1346                                                         FROM ttrss_feeds WHERE $cat_qpart AND owner_uid = $owner_uid");
1347
1348                                                 while ($tmp_line = db_fetch_assoc($tmp_result)) {
1349
1350                                                         $tmp_feed = $tmp_line["id"];
1351
1352                                                         db_query($link, "UPDATE ttrss_user_entries
1353                                                                 SET unread = false,last_read = NOW()
1354                                                                 WHERE feed_id = '$tmp_feed'
1355                                                                 AND $ref_check_qpart
1356                                                                 AND owner_uid = $owner_uid");
1357                                                 }
1358                                         } else if ($feed == -2) {
1359
1360                                                 db_query($link, "UPDATE ttrss_user_entries
1361                                                         SET unread = false,last_read = NOW() WHERE (SELECT COUNT(*)
1362                                                                 FROM ttrss_user_labels2 WHERE article_id = ref_id) > 0
1363                                                                 AND $ref_check_qpart
1364                                                                 AND unread = true AND owner_uid = $owner_uid");
1365                                         }
1366
1367                                 } else if ($feed > 0) {
1368
1369                                         db_query($link, "UPDATE ttrss_user_entries
1370                                                         SET unread = false,last_read = NOW()
1371                                                         WHERE feed_id = '$feed'
1372                                                         AND $ref_check_qpart
1373                                                         AND owner_uid = $owner_uid");
1374
1375                                 } else if ($feed < 0 && $feed > -10) { // special, like starred
1376
1377                                         if ($feed == -1) {
1378                                                 db_query($link, "UPDATE ttrss_user_entries
1379                                                         SET unread = false,last_read = NOW()
1380                                                         WHERE marked = true
1381                                                         AND $ref_check_qpart
1382                                                         AND owner_uid = $owner_uid");
1383                                         }
1384
1385                                         if ($feed == -2) {
1386                                                 db_query($link, "UPDATE ttrss_user_entries
1387                                                         SET unread = false,last_read = NOW()
1388                                                         WHERE published = true
1389                                                         AND $ref_check_qpart
1390                                                         AND owner_uid = $owner_uid");
1391                                         }
1392
1393                                         if ($feed == -3) {
1394
1395                                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE");
1396
1397                                                 if (DB_TYPE == "pgsql") {
1398                                                         $match_part = "updated > NOW() - INTERVAL '$intl hour' ";
1399                                                 } else {
1400                                                         $match_part = "updated > DATE_SUB(NOW(),
1401                                                                 INTERVAL $intl HOUR) ";
1402                                                 }
1403
1404                                                 $result = db_query($link, "SELECT id FROM ttrss_entries,
1405                                                         ttrss_user_entries WHERE $match_part AND
1406                                                         unread = true AND
1407                                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
1408                                                         owner_uid = $owner_uid");
1409
1410                                                 $affected_ids = array();
1411
1412                                                 while ($line = db_fetch_assoc($result)) {
1413                                                         array_push($affected_ids, $line["id"]);
1414                                                 }
1415
1416                                                 catchupArticlesById($link, $affected_ids, 0);
1417                                         }
1418
1419                                         if ($feed == -4) {
1420                                                 db_query($link, "UPDATE ttrss_user_entries
1421                                                         SET unread = false,last_read = NOW()
1422                                                         WHERE $ref_check_qpart AND owner_uid = $owner_uid");
1423                                         }
1424
1425                                 } else if ($feed < -10) { // label
1426
1427                                         $label_id = -$feed - 11;
1428
1429                                         db_query($link, "UPDATE ttrss_user_entries, ttrss_user_labels2
1430                                                 SET unread = false, last_read = NOW()
1431                                                         WHERE label_id = '$label_id' AND unread = true
1432                                                         AND $ref_check_qpart
1433                                                         AND owner_uid = '$owner_uid' AND ref_id = article_id");
1434
1435                                 }
1436
1437                                 ccache_update($link, $feed, $owner_uid, $cat_view);
1438
1439                         } else { // tag
1440                                 db_query($link, "BEGIN");
1441
1442                                 $tag_name = db_escape_string($feed);
1443
1444                                 $result = db_query($link, "SELECT post_int_id FROM ttrss_tags
1445                                         WHERE tag_name = '$tag_name' AND owner_uid = $owner_uid");
1446
1447                                 while ($line = db_fetch_assoc($result)) {
1448                                         db_query($link, "UPDATE ttrss_user_entries SET
1449                                                 unread = false, last_read = NOW()
1450                                                 WHERE $ref_check_qpart AND int_id = " . $line["post_int_id"]);
1451                                 }
1452                                 db_query($link, "COMMIT");
1453                         }
1454         }
1455
1456         function getAllCounters($link, $omode = "flc", $active_feed = false) {
1457
1458                 if (!$omode) $omode = "flc";
1459
1460                 $data = getGlobalCounters($link);
1461
1462                 $data = array_merge($data, getVirtCounters($link));
1463
1464                 if (strchr($omode, "l")) $data = array_merge($data, getLabelCounters($link));
1465                 if (strchr($omode, "f")) $data = array_merge($data, getFeedCounters($link, $active_feed));
1466                 if (strchr($omode, "t")) $data = array_merge($data, getTagCounters($link));
1467                 if (strchr($omode, "c")) $data = array_merge($data, getCategoryCounters($link));
1468
1469                 return $data;
1470         }
1471
1472         function getCategoryTitle($link, $cat_id) {
1473
1474                 if ($cat_id == -1) {
1475                         return __("Special");
1476                 } else if ($cat_id == -2) {
1477                         return __("Labels");
1478                 } else {
1479
1480                         $result = db_query($link, "SELECT title FROM ttrss_feed_categories WHERE
1481                                 id = '$cat_id'");
1482
1483                         if (db_num_rows($result) == 1) {
1484                                 return db_fetch_result($result, 0, "title");
1485                         } else {
1486                                 return "Uncategorized";
1487                         }
1488                 }
1489         }
1490
1491
1492         function getCategoryCounters($link) {
1493                 $ret_arr = array();
1494
1495                 /* Labels category */
1496
1497                 $cv = array("id" => -2, "kind" => "cat",
1498                         "counter" => getCategoryUnread($link, -2));
1499
1500                 array_push($ret_arr, $cv);
1501
1502                 $age_qpart = getMaxAgeSubquery();
1503
1504                 $result = db_query($link, "SELECT id AS cat_id, value AS unread
1505                         FROM ttrss_feed_categories, ttrss_cat_counters_cache
1506                         WHERE ttrss_cat_counters_cache.feed_id = id AND
1507                         ttrss_feed_categories.owner_uid = " . $_SESSION["uid"]);
1508
1509                 while ($line = db_fetch_assoc($result)) {
1510                         $line["cat_id"] = (int) $line["cat_id"];
1511
1512                         $cv = array("id" => $line["cat_id"], "kind" => "cat",
1513                                 "counter" => $line["unread"]);
1514
1515                         array_push($ret_arr, $cv);
1516                 }
1517
1518                 /* Special case: NULL category doesn't actually exist in the DB */
1519
1520                 $cv = array("id" => 0, "kind" => "cat",
1521                         "counter" => ccache_find($link, 0, $_SESSION["uid"], true));
1522
1523                 array_push($ret_arr, $cv);
1524
1525                 return $ret_arr;
1526         }
1527
1528         function getCategoryUnread($link, $cat, $owner_uid = false) {
1529
1530                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1531
1532                 if ($cat >= 0) {
1533
1534                         if ($cat != 0) {
1535                                 $cat_query = "cat_id = '$cat'";
1536                         } else {
1537                                 $cat_query = "cat_id IS NULL";
1538                         }
1539
1540                         $age_qpart = getMaxAgeSubquery();
1541
1542                         $result = db_query($link, "SELECT id FROM ttrss_feeds WHERE $cat_query
1543                                         AND owner_uid = " . $owner_uid);
1544
1545                         $cat_feeds = array();
1546                         while ($line = db_fetch_assoc($result)) {
1547                                 array_push($cat_feeds, "feed_id = " . $line["id"]);
1548                         }
1549
1550                         if (count($cat_feeds) == 0) return 0;
1551
1552                         $match_part = implode(" OR ", $cat_feeds);
1553
1554                         $result = db_query($link, "SELECT COUNT(int_id) AS unread
1555                                 FROM ttrss_user_entries,ttrss_entries
1556                                 WHERE   unread = true AND ($match_part) AND id = ref_id
1557                                 AND $age_qpart AND owner_uid = " . $owner_uid);
1558
1559                         $unread = 0;
1560
1561                         # this needs to be rewritten
1562                         while ($line = db_fetch_assoc($result)) {
1563                                 $unread += $line["unread"];
1564                         }
1565
1566                         return $unread;
1567                 } else if ($cat == -1) {
1568                         return getFeedUnread($link, -1) + getFeedUnread($link, -2) + getFeedUnread($link, -3) + getFeedUnread($link, 0);
1569                 } else if ($cat == -2) {
1570
1571                         $result = db_query($link, "
1572                                 SELECT COUNT(unread) AS unread FROM
1573                                         ttrss_user_entries, ttrss_labels2, ttrss_user_labels2, ttrss_feeds
1574                                 WHERE label_id = ttrss_labels2.id AND article_id = ref_id AND
1575                                         ttrss_labels2.owner_uid = '$owner_uid'
1576                                         AND unread = true AND feed_id = ttrss_feeds.id
1577                                         AND ttrss_user_entries.owner_uid = '$owner_uid'");
1578
1579                         $unread = db_fetch_result($result, 0, "unread");
1580
1581                         return $unread;
1582
1583                 }
1584         }
1585
1586         function getMaxAgeSubquery($days = COUNTERS_MAX_AGE) {
1587                 if (DB_TYPE == "pgsql") {
1588                         return "ttrss_entries.date_updated >
1589                                 NOW() - INTERVAL '$days days'";
1590                 } else {
1591                         return "ttrss_entries.date_updated >
1592                                 DATE_SUB(NOW(), INTERVAL $days DAY)";
1593                 }
1594         }
1595
1596         function getFeedUnread($link, $feed, $is_cat = false) {
1597                 return getFeedArticles($link, $feed, $is_cat, true, $_SESSION["uid"]);
1598         }
1599
1600         function getLabelUnread($link, $label_id, $owner_uid = false) {
1601                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1602
1603                 $result = db_query($link, "
1604                         SELECT COUNT(unread) AS unread FROM
1605                                 ttrss_user_entries, ttrss_labels2, ttrss_user_labels2, ttrss_feeds
1606                         WHERE label_id = ttrss_labels2.id AND article_id = ref_id AND
1607                                 ttrss_labels2.owner_uid = '$owner_uid' AND ttrss_labels2.id = '$label_id'
1608                                 AND unread = true AND feed_id = ttrss_feeds.id
1609                                 AND ttrss_user_entries.owner_uid = '$owner_uid'");
1610
1611                 if (db_num_rows($result) != 0) {
1612                         return db_fetch_result($result, 0, "unread");
1613                 } else {
1614                         return 0;
1615                 }
1616         }
1617
1618         function getFeedArticles($link, $feed, $is_cat = false, $unread_only = false,
1619                 $owner_uid = false) {
1620
1621                 $n_feed = (int) $feed;
1622
1623                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1624
1625                 if ($unread_only) {
1626                         $unread_qpart = "unread = true";
1627                 } else {
1628                         $unread_qpart = "true";
1629                 }
1630
1631                 $age_qpart = getMaxAgeSubquery();
1632
1633                 if ($is_cat) {
1634                         return getCategoryUnread($link, $n_feed, $owner_uid);
1635                 } if ($feed != "0" && $n_feed == 0) {
1636
1637                         $feed = db_escape_string($feed);
1638
1639                         $result = db_query($link, "SELECT SUM((SELECT COUNT(int_id)
1640                                 FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1641                                         AND ref_id = id AND $age_qpart
1642                                         AND $unread_qpart)) AS count FROM ttrss_tags
1643                                 WHERE owner_uid = $owner_uid AND tag_name = '$feed'");
1644                         return db_fetch_result($result, 0, "count");
1645
1646                 } else if ($n_feed == -1) {
1647                         $match_part = "marked = true";
1648                 } else if ($n_feed == -2) {
1649                         $match_part = "published = true";
1650                 } else if ($n_feed == -3) {
1651                         $match_part = "unread = true AND score >= 0";
1652
1653                         $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
1654
1655                         if (DB_TYPE == "pgsql") {
1656                                 $match_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
1657                         } else {
1658                                 $match_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
1659                         }
1660                 } else if ($n_feed == -4) {
1661                         $match_part = "true";
1662                 } else if ($n_feed >= 0) {
1663
1664                         if ($n_feed != 0) {
1665                                 $match_part = "feed_id = '$n_feed'";
1666                         } else {
1667                                 $match_part = "feed_id IS NULL";
1668                         }
1669
1670                 } else if ($feed < -10) {
1671
1672                         $label_id = -$feed - 11;
1673
1674                         return getLabelUnread($link, $label_id, $owner_uid);
1675
1676                 }
1677
1678                 if ($match_part) {
1679
1680                         if ($n_feed != 0) {
1681                                 $from_qpart = "ttrss_user_entries,ttrss_feeds,ttrss_entries";
1682                                 $feeds_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
1683                         } else {
1684                                 $from_qpart = "ttrss_user_entries,ttrss_entries";
1685                                 $feeds_qpart = '';
1686                         }
1687
1688                         $query = "SELECT count(int_id) AS unread
1689                                 FROM $from_qpart WHERE
1690                                 ttrss_user_entries.ref_id = ttrss_entries.id AND
1691                                 $age_qpart AND
1692                                 $feeds_qpart
1693                                 $unread_qpart AND ($match_part) AND ttrss_user_entries.owner_uid = $owner_uid";
1694
1695                         $result = db_query($link, $query);
1696
1697                 } else {
1698
1699                         $result = db_query($link, "SELECT COUNT(post_int_id) AS unread
1700                                 FROM ttrss_tags,ttrss_user_entries,ttrss_entries
1701                                 WHERE tag_name = '$feed' AND post_int_id = int_id AND ref_id = ttrss_entries.id
1702                                 AND $unread_qpart AND $age_qpart AND
1703                                         ttrss_tags.owner_uid = " . $owner_uid);
1704                 }
1705
1706                 $unread = db_fetch_result($result, 0, "unread");
1707
1708                 return $unread;
1709         }
1710
1711         function getGlobalUnread($link, $user_id = false) {
1712
1713                 if (!$user_id) {
1714                         $user_id = $_SESSION["uid"];
1715                 }
1716
1717                 $result = db_query($link, "SELECT SUM(value) AS c_id FROM ttrss_counters_cache
1718                         WHERE owner_uid = '$user_id' AND feed_id > 0");
1719
1720                 $c_id = db_fetch_result($result, 0, "c_id");
1721
1722                 return $c_id;
1723         }
1724
1725         function getGlobalCounters($link, $global_unread = -1) {
1726                 $ret_arr = array();
1727
1728                 if ($global_unread == -1) {
1729                         $global_unread = getGlobalUnread($link);
1730                 }
1731
1732                 $cv = array("id" => "global-unread",
1733                         "counter" => $global_unread);
1734
1735                 array_push($ret_arr, $cv);
1736
1737                 $result = db_query($link, "SELECT COUNT(id) AS fn FROM
1738                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1739
1740                 $subscribed_feeds = db_fetch_result($result, 0, "fn");
1741
1742                 $cv = array("id" => "subscribed-feeds",
1743                         "counter" => $subscribed_feeds);
1744
1745                 array_push($ret_arr, $cv);
1746
1747                 return $ret_arr;
1748         }
1749
1750         function getTagCounters($link) {
1751
1752                 $ret_arr = array();
1753
1754                 $age_qpart = getMaxAgeSubquery();
1755
1756                 $result = db_query($link, "SELECT tag_name,SUM((SELECT COUNT(int_id)
1757                         FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1758                                 AND ref_id = id AND $age_qpart
1759                                 AND unread = true)) AS count FROM ttrss_tags
1760                                 WHERE owner_uid = ".$_SESSION['uid']." GROUP BY tag_name
1761                                 ORDER BY count DESC LIMIT 55");
1762
1763                 $tags = array();
1764
1765                 while ($line = db_fetch_assoc($result)) {
1766                         $tags[$line["tag_name"]] += $line["count"];
1767                 }
1768
1769                 foreach (array_keys($tags) as $tag) {
1770                         $unread = $tags[$tag];
1771                         $tag = htmlspecialchars($tag);
1772
1773                         $cv = array("id" => $tag,
1774                                 "kind" => "tag",
1775                                 "counter" => $unread);
1776
1777                         array_push($ret_arr, $cv);
1778                 }
1779
1780                 return $ret_arr;
1781         }
1782
1783         function getVirtCounters($link) {
1784
1785                 $ret_arr = array();
1786
1787                 for ($i = 0; $i >= -4; $i--) {
1788
1789                         $count = getFeedUnread($link, $i);
1790
1791                         $cv = array("id" => $i,
1792                                 "counter" => $count);
1793
1794 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1795 //                              $cv["xmsg"] = getFeedArticles($link, $i)." ".__("total");
1796
1797                         array_push($ret_arr, $cv);
1798                 }
1799
1800                 return $ret_arr;
1801         }
1802
1803         function getLabelCounters($link, $descriptions = false) {
1804
1805                 $ret_arr = array();
1806
1807                 $age_qpart = getMaxAgeSubquery();
1808
1809                 $owner_uid = $_SESSION["uid"];
1810
1811                 $result = db_query($link, "SELECT id, caption FROM ttrss_labels2
1812                         WHERE owner_uid = '$owner_uid'");
1813
1814                 while ($line = db_fetch_assoc($result)) {
1815
1816                         $id = -$line["id"] - 11;
1817
1818                         $label_name = $line["caption"];
1819                         $count = getFeedUnread($link, $id);
1820
1821                         $cv = array("id" => $id,
1822                                 "counter" => $count);
1823
1824                         if ($descriptions)
1825                                 $cv["description"] = $label_name;
1826
1827 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1828 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1829
1830                         array_push($ret_arr, $cv);
1831                 }
1832
1833                 return $ret_arr;
1834         }
1835
1836         function getFeedCounters($link, $active_feed = false) {
1837
1838                 $ret_arr = array();
1839
1840                 $age_qpart = getMaxAgeSubquery();
1841
1842                 $query = "SELECT ttrss_feeds.id,
1843                                 ttrss_feeds.title,
1844                                 ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
1845                                 last_error, value AS count
1846                         FROM ttrss_feeds, ttrss_counters_cache
1847                         WHERE ttrss_feeds.owner_uid = ".$_SESSION["uid"]."
1848                                 AND ttrss_counters_cache.feed_id = id";
1849
1850                 $result = db_query($link, $query);
1851                 $fctrs_modified = false;
1852
1853                 while ($line = db_fetch_assoc($result)) {
1854
1855                         $id = $line["id"];
1856                         $count = $line["count"];
1857                         $last_error = htmlspecialchars($line["last_error"]);
1858
1859                         $last_updated = make_local_datetime($link, $line['last_updated'], false);
1860
1861                         $has_img = feed_has_icon($id);
1862
1863                         if (date('Y') - date('Y', strtotime($line['last_updated'])) > 2)
1864                                 $last_updated = '';
1865
1866                         $cv = array("id" => $id,
1867                                 "updated" => $last_updated,
1868                                 "counter" => $count,
1869                                 "has_img" => (int) $has_img);
1870
1871                         if ($last_error)
1872                                 $cv["error"] = $last_error;
1873
1874 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1875 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1876
1877                         if ($active_feed && $id == $active_feed)
1878                                 $cv["title"] = truncate_string($line["title"], 30);
1879
1880                         array_push($ret_arr, $cv);
1881
1882                 }
1883
1884                 return $ret_arr;
1885         }
1886
1887         function get_pgsql_version($link) {
1888                 $result = db_query($link, "SELECT version() AS version");
1889                 $version = explode(" ", db_fetch_result($result, 0, "version"));
1890                 return $version[1];
1891         }
1892
1893         /**
1894          * @return integer Status code:
1895          *                 0 - OK, Feed already exists
1896          *                 1 - OK, Feed added
1897          *                 2 - Invalid URL
1898          *                 3 - URL content is HTML, no feeds available
1899          *                 4 - URL content is HTML which contains multiple feeds.
1900          *                     Here you should call extractfeedurls in rpc-backend
1901          *                     to get all possible feeds.
1902          *                 5 - Couldn't download the URL content.
1903          */
1904         function subscribe_to_feed($link, $url, $cat_id = 0,
1905                         $auth_login = '', $auth_pass = '', $need_auth = false) {
1906
1907                 require_once "include/rssfuncs.php";
1908
1909                 $url = fix_url($url);
1910
1911                 if (!$url || !validate_feed_url($url)) return 2;
1912
1913                 $update_method = 0;
1914
1915                 $result = db_query($link, "SELECT twitter_oauth FROM ttrss_users
1916                         WHERE id = ".$_SESSION['uid']);
1917
1918                 $has_oauth = db_fetch_result($result, 0, 'twitter_oauth');
1919
1920                 if (!$need_auth || !$has_oauth || strpos($url, '://api.twitter.com') === false) {
1921                         if (!fetch_file_contents($url, false, $auth_login, $auth_pass)) return 5;
1922
1923                         if (url_is_html($url, $auth_login, $auth_pass)) {
1924                                 $feedUrls = get_feeds_from_html($url, $auth_login, $auth_pass);
1925                                 if (count($feedUrls) == 0) {
1926                                         return 3;
1927                                 } else if (count($feedUrls) > 1) {
1928                                         return 4;
1929                                 }
1930                                 //use feed url as new URL
1931                                 $url = key($feedUrls);
1932                         }
1933
1934                         } else {
1935                                 if (!fetch_twitter_rss($link, $url, $_SESSION['uid']))
1936                                         return 5;
1937
1938                                 $update_method = 3;
1939                         }
1940                 if ($cat_id == "0" || !$cat_id) {
1941                         $cat_qpart = "NULL";
1942                 } else {
1943                         $cat_qpart = "'$cat_id'";
1944                 }
1945
1946                 $result = db_query($link,
1947                         "SELECT id FROM ttrss_feeds
1948                         WHERE feed_url = '$url' AND owner_uid = ".$_SESSION["uid"]);
1949
1950                 if (db_num_rows($result) == 0) {
1951                         $result = db_query($link,
1952                                 "INSERT INTO ttrss_feeds
1953                                         (owner_uid,feed_url,title,cat_id, auth_login,auth_pass,update_method)
1954                                 VALUES ('".$_SESSION["uid"]."', '$url',
1955                                 '[Unknown]', $cat_qpart, '$auth_login', '$auth_pass', '$update_method')");
1956
1957                         $result = db_query($link,
1958                                 "SELECT id FROM ttrss_feeds WHERE feed_url = '$url'
1959                                         AND owner_uid = " . $_SESSION["uid"]);
1960
1961                         $feed_id = db_fetch_result($result, 0, "id");
1962
1963                         if ($feed_id) {
1964                                 update_rss_feed($link, $feed_id, true);
1965                         }
1966
1967                         return 1;
1968                 } else {
1969                         return 0;
1970                 }
1971         }
1972
1973         function print_feed_select($link, $id, $default_id = "",
1974                 $attributes = "", $include_all_feeds = true) {
1975
1976                 print "<select id=\"$id\" name=\"$id\" $attributes>";
1977                 if ($include_all_feeds) {
1978                         print "<option value=\"0\">".__('All feeds')."</option>";
1979                 }
1980
1981                 $result = db_query($link, "SELECT id,title FROM ttrss_feeds
1982                         WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
1983
1984                 if (db_num_rows($result) > 0 && $include_all_feeds) {
1985                         print "<option disabled>--------</option>";
1986                 }
1987
1988                 while ($line = db_fetch_assoc($result)) {
1989                         if ($line["id"] == $default_id) {
1990                                 $is_selected = "selected=\"1\"";
1991                         } else {
1992                                 $is_selected = "";
1993                         }
1994
1995                         $title = truncate_string(htmlspecialchars($line["title"]), 40);
1996
1997                         printf("<option $is_selected value='%d'>%s</option>",
1998                                 $line["id"], $title);
1999                 }
2000
2001                 print "</select>";
2002         }
2003
2004         function print_feed_cat_select($link, $id, $default_id = "",
2005                 $attributes = "", $include_all_cats = true) {
2006
2007                 print "<select id=\"$id\" name=\"$id\" default=\"$default_id\" onchange=\"catSelectOnChange(this)\" $attributes>";
2008
2009                 if ($include_all_cats) {
2010                         print "<option value=\"0\">".__('Uncategorized')."</option>";
2011                 }
2012
2013                 $result = db_query($link, "SELECT id,title FROM ttrss_feed_categories
2014                         WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
2015
2016                 if (db_num_rows($result) > 0 && $include_all_cats) {
2017                         print "<option disabled=\"1\">--------</option>";
2018                 }
2019
2020                 while ($line = db_fetch_assoc($result)) {
2021                         if ($line["id"] == $default_id) {
2022                                 $is_selected = "selected=\"1\"";
2023                         } else {
2024                                 $is_selected = "";
2025                         }
2026
2027                         if ($line["title"])
2028                                 printf("<option $is_selected value='%d'>%s</option>",
2029                                         $line["id"], htmlspecialchars($line["title"]));
2030                 }
2031
2032 #               print "<option value=\"ADD_CAT\">" .__("Add category...") . "</option>";
2033
2034                 print "</select>";
2035         }
2036
2037         function checkbox_to_sql_bool($val) {
2038                 return ($val == "on") ? "true" : "false";
2039         }
2040
2041         function getFeedCatTitle($link, $id) {
2042                 if ($id == -1) {
2043                         return __("Special");
2044                 } else if ($id < -10) {
2045                         return __("Labels");
2046                 } else if ($id > 0) {
2047                         $result = db_query($link, "SELECT ttrss_feed_categories.title
2048                                 FROM ttrss_feeds, ttrss_feed_categories WHERE ttrss_feeds.id = '$id' AND
2049                                         cat_id = ttrss_feed_categories.id");
2050                         if (db_num_rows($result) == 1) {
2051                                 return db_fetch_result($result, 0, "title");
2052                         } else {
2053                                 return __("Uncategorized");
2054                         }
2055                 } else {
2056                         return "getFeedCatTitle($id) failed";
2057                 }
2058
2059         }
2060
2061         function getFeedIcon($id) {
2062                 switch ($id) {
2063                 case 0:
2064                         return "images/archive.png";
2065                         break;
2066                 case -1:
2067                         return "images/mark_set.png";
2068                         break;
2069                 case -2:
2070                         return "images/pub_set.png";
2071                         break;
2072                 case -3:
2073                         return "images/fresh.png";
2074                         break;
2075                 case -4:
2076                         return "images/tag.png";
2077                         break;
2078                 default:
2079                         if ($id < -10) {
2080                                 return "images/label.png";
2081                         } else {
2082                                 if (file_exists(ICONS_DIR . "/$id.ico"))
2083                                         return ICONS_URL . "/$id.ico";
2084                         }
2085                         break;
2086                 }
2087         }
2088
2089         function getFeedTitle($link, $id) {
2090                 if ($id == -1) {
2091                         return __("Starred articles");
2092                 } else if ($id == -2) {
2093                         return __("Published articles");
2094                 } else if ($id == -3) {
2095                         return __("Fresh articles");
2096                 } else if ($id == -4) {
2097                         return __("All articles");
2098                 } else if ($id === 0 || $id === "0") {
2099                         return __("Archived articles");
2100                 } else if ($id < -10) {
2101                         $label_id = -$id - 11;
2102                         $result = db_query($link, "SELECT caption FROM ttrss_labels2 WHERE id = '$label_id'");
2103                         if (db_num_rows($result) == 1) {
2104                                 return db_fetch_result($result, 0, "caption");
2105                         } else {
2106                                 return "Unknown label ($label_id)";
2107                         }
2108
2109                 } else if (is_numeric($id) && $id > 0) {
2110                         $result = db_query($link, "SELECT title FROM ttrss_feeds WHERE id = '$id'");
2111                         if (db_num_rows($result) == 1) {
2112                                 return db_fetch_result($result, 0, "title");
2113                         } else {
2114                                 return "Unknown feed ($id)";
2115                         }
2116                 } else {
2117                         return $id;
2118                 }
2119         }
2120
2121         function make_init_params($link) {
2122                 $params = array();
2123
2124                 $params["theme"] = get_user_theme($link);
2125                 $params["theme_options"] = get_user_theme_options($link);
2126
2127                 $params["sign_progress"] = theme_image($link, "images/indicator_white.gif");
2128                 $params["sign_progress_tiny"] = theme_image($link, "images/indicator_tiny.gif");
2129                 $params["sign_excl"] = theme_image($link, "images/sign_excl.png");
2130                 $params["sign_info"] = theme_image($link, "images/sign_info.png");
2131
2132                 foreach (array("ON_CATCHUP_SHOW_NEXT_FEED", "HIDE_READ_FEEDS",
2133                         "ENABLE_FEED_CATS", "FEEDS_SORT_BY_UNREAD", "CONFIRM_FEED_CATCHUP",
2134                         "CDM_AUTO_CATCHUP", "FRESH_ARTICLE_MAX_AGE", "DEFAULT_ARTICLE_LIMIT",
2135                         "HIDE_READ_SHOWS_SPECIAL", "COMBINED_DISPLAY_MODE") as $param) {
2136
2137                                  $params[strtolower($param)] = (int) get_pref($link, $param);
2138                  }
2139
2140                 $params["icons_url"] = ICONS_URL;
2141                 $params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
2142                 $params["default_view_mode"] = get_pref($link, "_DEFAULT_VIEW_MODE");
2143                 $params["default_view_limit"] = (int) get_pref($link, "_DEFAULT_VIEW_LIMIT");
2144                 $params["default_view_order_by"] = get_pref($link, "_DEFAULT_VIEW_ORDER_BY");
2145                 $params["bw_limit"] = (int) $_SESSION["bw_limit"];
2146
2147                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2148                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2149
2150                 $max_feed_id = db_fetch_result($result, 0, "mid");
2151                 $num_feeds = db_fetch_result($result, 0, "nf");
2152
2153                 $params["max_feed_id"] = (int) $max_feed_id;
2154                 $params["num_feeds"] = (int) $num_feeds;
2155
2156                 $params["collapsed_feedlist"] = (int) get_pref($link, "_COLLAPSED_FEEDLIST");
2157
2158                 $params["csrf_token"] = $_SESSION["csrf_token"];
2159
2160                 return $params;
2161         }
2162
2163         function make_runtime_info($link) {
2164                 $data = array();
2165
2166                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2167                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2168
2169                 $max_feed_id = db_fetch_result($result, 0, "mid");
2170                 $num_feeds = db_fetch_result($result, 0, "nf");
2171
2172                 $data["max_feed_id"] = (int) $max_feed_id;
2173                 $data["num_feeds"] = (int) $num_feeds;
2174
2175                 $data['last_article_id'] = getLastArticleId($link);
2176                 $data['cdm_expanded'] = get_pref($link, 'CDM_EXPANDED');
2177
2178                 if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
2179
2180                         $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
2181
2182                         if (time() - $_SESSION["daemon_stamp_check"] > 30) {
2183
2184                                 $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
2185
2186                                 if ($stamp) {
2187                                         $stamp_delta = time() - $stamp;
2188
2189                                         if ($stamp_delta > 1800) {
2190                                                 $stamp_check = 0;
2191                                         } else {
2192                                                 $stamp_check = 1;
2193                                                 $_SESSION["daemon_stamp_check"] = time();
2194                                         }
2195
2196                                         $data['daemon_stamp_ok'] = $stamp_check;
2197
2198                                         $stamp_fmt = date("Y.m.d, G:i", $stamp);
2199
2200                                         $data['daemon_stamp'] = $stamp_fmt;
2201                                 }
2202                         }
2203                 }
2204
2205                 if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
2206                                 $new_version_details = @check_for_update($link);
2207
2208                                 $data['new_version_available'] = (int) ($new_version_details != false);
2209
2210                                 $_SESSION["last_version_check"] = time();
2211                 }
2212
2213                 return $data;
2214         }
2215
2216         function search_to_sql($link, $search, $match_on) {
2217
2218                 $search_query_part = "";
2219
2220                 $keywords = explode(" ", $search);
2221                 $query_keywords = array();
2222
2223                 foreach ($keywords as $k) {
2224                         if (strpos($k, "-") === 0) {
2225                                 $k = substr($k, 1);
2226                                 $not = "NOT";
2227                         } else {
2228                                 $not = "";
2229                         }
2230
2231                         $commandpair = explode(":", mb_strtolower($k), 2);
2232
2233                         if ($commandpair[0] == "note" && $commandpair[1]) {
2234
2235                                 if ($commandpair[1] == "true")
2236                                         array_push($query_keywords, "($not (note IS NOT NULL AND note != ''))");
2237                                 else
2238                                         array_push($query_keywords, "($not (note IS NULL OR note = ''))");
2239
2240                         } else if ($commandpair[0] == "star" && $commandpair[1]) {
2241
2242                                 if ($commandpair[1] == "true")
2243                                         array_push($query_keywords, "($not (marked = true))");
2244                                 else
2245                                         array_push($query_keywords, "($not (marked = false))");
2246
2247                         } else if ($commandpair[0] == "pub" && $commandpair[1]) {
2248
2249                                 if ($commandpair[1] == "true")
2250                                         array_push($query_keywords, "($not (published = true))");
2251                                 else
2252                                         array_push($query_keywords, "($not (published = false))");
2253
2254                         } else if (strpos($k, "@") === 0) {
2255
2256                                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $_SESSION['uid']);
2257                                 $orig_ts = strtotime(substr($k, 1));
2258                                 $k = date("Y-m-d", convert_timestamp($orig_ts, $user_tz_string, 'UTC'));
2259
2260                                 //$k = date("Y-m-d", strtotime(substr($k, 1)));
2261
2262                                 array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
2263                         } else if ($match_on == "both") {
2264                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2265                                                 OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2266                         } else if ($match_on == "title") {
2267                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%'))");
2268                         } else if ($match_on == "content") {
2269                                 array_push($query_keywords, "(UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2270                         }
2271                 }
2272
2273                 $search_query_part = implode("AND", $query_keywords);
2274
2275                 return $search_query_part;
2276         }
2277
2278
2279         function queryFeedHeadlines($link, $feed, $limit, $view_mode, $cat_view, $search, $search_mode, $match_on, $override_order = false, $offset = 0, $owner_uid = 0, $filter = false, $since_id = 0) {
2280
2281                 if (!$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                                 $filter_query_part = filter_to_sql($filter);
2306                         } else {
2307                                 $filter_query_part = "";
2308                         }
2309
2310                         if ($since_id) {
2311                                 $since_id_part = "ttrss_entries.id > $since_id AND ";
2312                         } else {
2313                                 $since_id_part = "";
2314                         }
2315
2316                         $view_query_part = "";
2317
2318                         if ($view_mode == "adaptive" || $view_query_part == "noscores") {
2319                                 if ($search) {
2320                                         $view_query_part = " ";
2321                                 } else if ($feed != -1) {
2322                                         $unread = getFeedUnread($link, $feed, $cat_view);
2323                                         if ($unread > 0) {
2324                                                 $view_query_part = " unread = true AND ";
2325                                         }
2326                                 }
2327                         }
2328
2329                         if ($view_mode == "marked") {
2330                                 $view_query_part = " marked = true AND ";
2331                         }
2332
2333                         if ($view_mode == "published") {
2334                                 $view_query_part = " published = true AND ";
2335                         }
2336
2337                         if ($view_mode == "unread") {
2338                                 $view_query_part = " unread = true AND ";
2339                         }
2340
2341                         if ($view_mode == "updated") {
2342                                 $view_query_part = " (last_read is null and unread = false) AND ";
2343                         }
2344
2345                         if ($limit > 0) {
2346                                 $limit_query_part = "LIMIT " . $limit;
2347                         }
2348
2349                         $vfeed_query_part = "";
2350
2351                         // override query strategy and enable feed display when searching globally
2352                         if ($search && $search_mode == "all_feeds") {
2353                                 $query_strategy_part = "ttrss_entries.id > 0";
2354                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2355                         /* tags */
2356                         } else if (preg_match("/^-?[0-9][0-9]*$/", $feed) == false) {
2357                                 $query_strategy_part = "ttrss_entries.id > 0";
2358                                 $vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
2359                                         id = feed_id) as feed_title,";
2360                         } else if ($feed > 0 && $search && $search_mode == "this_cat") {
2361
2362                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2363
2364                                 $tmp_result = false;
2365
2366                                 if ($cat_view) {
2367                                         $tmp_result = db_query($link, "SELECT id
2368                                                 FROM ttrss_feeds WHERE cat_id = '$feed'");
2369                                 } else {
2370                                         $tmp_result = db_query($link, "SELECT id
2371                                                 FROM ttrss_feeds WHERE cat_id = (SELECT cat_id FROM ttrss_feeds
2372                                                         WHERE id = '$feed') AND id != '$feed'");
2373                                 }
2374
2375                                 $cat_siblings = array();
2376
2377                                 if (db_num_rows($tmp_result) > 0) {
2378                                         while ($p = db_fetch_assoc($tmp_result)) {
2379                                                 array_push($cat_siblings, "feed_id = " . $p["id"]);
2380                                         }
2381
2382                                         $query_strategy_part = sprintf("(feed_id = %d OR %s)",
2383                                                 $feed, implode(" OR ", $cat_siblings));
2384
2385                                 } else {
2386                                         $query_strategy_part = "ttrss_entries.id > 0";
2387                                 }
2388
2389                         } else if ($feed > 0) {
2390
2391                                 if ($cat_view) {
2392
2393                                         if ($feed > 0) {
2394                                                 $query_strategy_part = "cat_id = '$feed'";
2395                                         } else {
2396                                                 $query_strategy_part = "cat_id IS NULL";
2397                                         }
2398
2399                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2400
2401                                 } else {
2402                                         $query_strategy_part = "feed_id = '$feed'";
2403                                 }
2404                         } else if ($feed == 0 && !$cat_view) { // archive virtual feed
2405                                 $query_strategy_part = "feed_id IS NULL";
2406                         } else if ($feed == 0 && $cat_view) { // uncategorized
2407                                 $query_strategy_part = "cat_id IS NULL AND feed_id IS NOT NULL";
2408                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2409                         } else if ($feed == -1) { // starred virtual feed
2410                                 $query_strategy_part = "marked = true";
2411                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2412                         } else if ($feed == -2) { // published virtual feed OR labels category
2413
2414                                 if (!$cat_view) {
2415                                         $query_strategy_part = "published = true";
2416                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2417                                 } else {
2418                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2419
2420                                         $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2421
2422                                         $query_strategy_part = "ttrss_labels2.id = ttrss_user_labels2.label_id AND
2423                                                 ttrss_user_labels2.article_id = ref_id";
2424
2425                                 }
2426
2427                         } else if ($feed == -3) { // fresh virtual feed
2428                                 $query_strategy_part = "unread = true AND score >= 0";
2429
2430                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
2431
2432                                 if (DB_TYPE == "pgsql") {
2433                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
2434                                 } else {
2435                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
2436                                 }
2437
2438                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2439                         } else if ($feed == -4) { // all articles virtual feed
2440                                 $query_strategy_part = "true";
2441                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2442                         } else if ($feed <= -10) { // labels
2443                                 $label_id = -$feed - 11;
2444
2445                                 $query_strategy_part = "label_id = '$label_id' AND
2446                                         ttrss_labels2.id = ttrss_user_labels2.label_id AND
2447                                         ttrss_user_labels2.article_id = ref_id";
2448
2449                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2450                                 $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2451
2452                         } else {
2453                                 $query_strategy_part = "id > 0"; // dumb
2454                         }
2455
2456                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
2457                                 $date_sort_field = "updated";
2458                         } else {
2459                                 $date_sort_field = "date_entered";
2460                         }
2461
2462                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
2463                                 $order_by = "$date_sort_field";
2464                         } else {
2465                                 $order_by = "$date_sort_field DESC";
2466                         }
2467
2468                         if ($view_mode != "noscores") {
2469                                 $order_by = "score DESC, $order_by";
2470                         }
2471
2472                         if ($override_order) {
2473                                 $order_by = $override_order;
2474                         }
2475
2476                         $feed_title = "";
2477
2478                         if ($search) {
2479                                 $feed_title = "Search results";
2480                         } else {
2481                                 if ($cat_view) {
2482                                         $feed_title = getCategoryTitle($link, $feed);
2483                                 } else {
2484                                         if (is_numeric($feed) && $feed > 0) {
2485                                                 $result = db_query($link, "SELECT title,site_url,last_error
2486                                                         FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = $owner_uid");
2487
2488                                                 $feed_title = db_fetch_result($result, 0, "title");
2489                                                 $feed_site_url = db_fetch_result($result, 0, "site_url");
2490                                                 $last_error = db_fetch_result($result, 0, "last_error");
2491                                         } else {
2492                                                 $feed_title = getFeedTitle($link, $feed);
2493                                         }
2494                                 }
2495                         }
2496
2497                         $content_query_part = "content as content_preview,";
2498
2499                         if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
2500
2501                                 if ($feed >= 0) {
2502                                         $feed_kind = "Feeds";
2503                                 } else {
2504                                         $feed_kind = "Labels";
2505                                 }
2506
2507                                 if ($limit_query_part) {
2508                                         $offset_query_part = "OFFSET $offset";
2509                                 }
2510
2511                                 if ($vfeed_query_part && get_pref($link, 'VFEED_GROUP_BY_FEED', $owner_uid)) {
2512                                         if (!$override_order) {
2513                                                 $order_by = "ttrss_feeds.title, $order_by";
2514                                         }
2515                                 }
2516
2517                                 if ($feed != "0") {
2518                                         $from_qpart = "ttrss_entries,ttrss_user_entries,ttrss_feeds$ext_tables_part";
2519                                         $feed_check_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
2520
2521                                 } else {
2522                                         $from_qpart = "ttrss_entries,ttrss_user_entries$ext_tables_part
2523                                                 LEFT JOIN ttrss_feeds ON (feed_id = ttrss_feeds.id)";
2524                                 }
2525
2526                                 $query = "SELECT DISTINCT
2527                                                 date_entered,
2528                                                 guid,
2529                                                 ttrss_entries.id,ttrss_entries.title,
2530                                                 updated,
2531                                                 label_cache,
2532                                                 tag_cache,
2533                                                 always_display_enclosures,
2534                                                 site_url,
2535                                                 note,
2536                                                 num_comments,
2537                                                 comments,
2538                                                 int_id,
2539                                                 unread,feed_id,marked,published,link,last_read,orig_feed_id,
2540                                                 ".SUBSTRING_FOR_DATE."(last_read,1,19) as last_read_noms,
2541                                                 $vfeed_query_part
2542                                                 $content_query_part
2543                                                 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated_noms,
2544                                                 author,score
2545                                         FROM
2546                                                 $from_qpart
2547                                         WHERE
2548                                         $feed_check_qpart
2549                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
2550                                         ttrss_user_entries.owner_uid = '$owner_uid' AND
2551                                         $search_query_part
2552                                         $filter_query_part
2553                                         $view_query_part
2554                                         $since_id_part
2555                                         $query_strategy_part ORDER BY $order_by
2556                                         $limit_query_part $offset_query_part";
2557
2558                                 if ($_REQUEST["debug"]) print $query;
2559
2560                                 $result = db_query($link, $query);
2561
2562                         } else {
2563                                 // browsing by tag
2564
2565                                 $select_qpart = "SELECT DISTINCT " .
2566                                                                 "date_entered," .
2567                                                                 "guid," .
2568                                                                 "note," .
2569                                                                 "ttrss_entries.id as id," .
2570                                                                 "title," .
2571                                                                 "updated," .
2572                                                                 "unread," .
2573                                                                 "feed_id," .
2574                                                                 "orig_feed_id," .
2575                                                                 "marked," .
2576                                                                 "num_comments, " .
2577                                                                 "comments, " .
2578                                                                 "tag_cache," .
2579                                                                 "label_cache," .
2580                                                                 "link," .
2581                                                                 "last_read," .
2582                                                                 SUBSTRING_FOR_DATE . "(last_read,1,19) as last_read_noms," .
2583                                                                 $since_id_part .
2584                                                                 $vfeed_query_part .
2585                                                                 $content_query_part .
2586                                                                 SUBSTRING_FOR_DATE . "(updated,1,19) as updated_noms," .
2587                                                                 "score ";
2588
2589                                 $feed_kind = "Tags";
2590                                 $all_tags = explode(",", $feed);
2591                                 if ($search_mode == 'any') {
2592                                         $tag_sql = "tag_name in (" . implode(", ", array_map("db_quote", $all_tags)) . ")";
2593                                         $from_qpart = " FROM ttrss_entries,ttrss_user_entries,ttrss_tags ";
2594                                         $where_qpart = " WHERE " .
2595                                                                    "ref_id = ttrss_entries.id AND " .
2596                                                                    "ttrss_user_entries.owner_uid = $owner_uid AND " .
2597                                                                    "post_int_id = int_id AND $tag_sql AND " .
2598                                                                    $view_query_part .
2599                                                                    $search_query_part .
2600                                                                    $query_strategy_part . " ORDER BY $order_by " .
2601                                                                    $limit_query_part;
2602
2603                                 } else {
2604                                         $i = 1;
2605                                         $sub_selects = array();
2606                                         $sub_ands = array();
2607                                         foreach ($all_tags as $term) {
2608                                                 array_push($sub_selects, "(SELECT post_int_id from ttrss_tags WHERE tag_name = " . db_quote($term) . " AND owner_uid = $owner_uid) as A$i");
2609                                                 $i++;
2610                                         }
2611                                         if ($i > 2) {
2612                                                 $x = 1;
2613                                                 $y = 2;
2614                                                 do {
2615                                                         array_push($sub_ands, "A$x.post_int_id = A$y.post_int_id");
2616                                                         $x++;
2617                                                         $y++;
2618                                                 } while ($y < $i);
2619                                         }
2620                                         array_push($sub_ands, "A1.post_int_id = ttrss_user_entries.int_id and ttrss_user_entries.owner_uid = $owner_uid");
2621                                         array_push($sub_ands, "ttrss_user_entries.ref_id = ttrss_entries.id");
2622                                         $from_qpart = " FROM " . implode(", ", $sub_selects) . ", ttrss_user_entries, ttrss_entries";
2623                                         $where_qpart = " WHERE " . implode(" AND ", $sub_ands);
2624                                 }
2625                                 //                              error_log("TAG SQL: " . $tag_sql);
2626                                 // $tag_sql = "tag_name = '$feed'";   DEFAULT way
2627
2628                                 //                              error_log("[". $select_qpart . "][" . $from_qpart . "][" .$where_qpart . "]");
2629                                 $result = db_query($link, $select_qpart . $from_qpart . $where_qpart);
2630                         }
2631
2632                         return array($result, $feed_title, $feed_site_url, $last_error);
2633
2634         }
2635
2636         function sanitize($link, $str, $force_strip_tags = false, $owner = false, $site_url = false) {
2637                 global $purifier;
2638
2639                 if (!$owner) $owner = $_SESSION["uid"];
2640
2641                 $res = trim($str); if (!$res) return '';
2642
2643                 // create global Purifier object if needed
2644                 if (!$purifier) {
2645                         require_once 'lib/htmlpurifier/library/HTMLPurifier.auto.php';
2646
2647                         $config = HTMLPurifier_Config::createDefault();
2648
2649                         $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]";
2650
2651                         $config->set('HTML.SafeObject', true);
2652                         @$config->set('HTML', 'Allowed', $allowed);
2653                         $config->set('Output.FlashCompat', true);
2654                         $config->set('Attr.EnableID', true);
2655                         if (!defined('MOBILE_VERSION')) {
2656                                 @$config->set('Cache', 'SerializerPath', CACHE_DIR . "/htmlpurifier");
2657                         } else {
2658                                 @$config->set('Cache', 'SerializerPath', "../" . CACHE_DIR . "/htmlpurifier");
2659                         }
2660
2661                         $config->set('Filter.YouTube', true);
2662
2663                         $purifier = new HTMLPurifier($config);
2664                 }
2665
2666                 $res = $purifier->purify($res);
2667
2668                 if (get_pref($link, "STRIP_IMAGES", $owner)) {
2669                         $res = preg_replace('/<img[^>]+>/is', '', $res);
2670                 }
2671
2672                 if (strpos($res, "href=") === false)
2673                         $res = rewrite_urls($res);
2674
2675                 $charset_hack = '<head>
2676                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
2677                 </head>';
2678
2679                 $res = trim($res); if (!$res) return '';
2680
2681                 libxml_use_internal_errors(true);
2682
2683                 $doc = new DOMDocument();
2684                 $doc->loadHTML($charset_hack . $res);
2685                 $xpath = new DOMXPath($doc);
2686
2687                 $entries = $xpath->query('(//a[@href]|//img[@src])');
2688                 $br_inserted = 0;
2689
2690                 foreach ($entries as $entry) {
2691
2692                         if ($site_url) {
2693
2694                                 if ($entry->hasAttribute('href'))
2695                                         $entry->setAttribute('href',
2696                                                 rewrite_relative_url($site_url, $entry->getAttribute('href')));
2697
2698                                 if ($entry->hasAttribute('src'))
2699                                         if (preg_match('/^image.php\?i=[a-z0-9]+$/', $entry->getAttribute('src')) == 0)
2700                                                 $entry->setAttribute('src',
2701                                                         rewrite_relative_url($site_url, $entry->getAttribute('src')));
2702                         }
2703
2704                         if (strtolower($entry->nodeName) == "a") {
2705                                 $entry->setAttribute("target", "_blank");
2706                         }
2707
2708                         if (strtolower($entry->nodeName) == "img" && !$br_inserted) {
2709                                 $br = $doc->createElement("br");
2710
2711                                 if ($entry->parentNode->nextSibling) {
2712                                         $entry->parentNode->insertBefore($br, $entry->nextSibling);
2713                                         $br_inserted = 1;
2714                                 }
2715
2716                         }
2717                 }
2718
2719                 $node = $doc->getElementsByTagName('body')->item(0);
2720
2721                 return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
2722         }
2723
2724         /**
2725          * Send by mail a digest of last articles.
2726          *
2727          * @param mixed $link The database connection.
2728          * @param integer $limit The maximum number of articles by digest.
2729          * @return boolean Return false if digests are not enabled.
2730          */
2731         function send_headlines_digests($link, $debug = false) {
2732
2733                 require_once 'lib/phpmailer/class.phpmailer.php';
2734
2735                 $user_limit = 15; // amount of users to process (e.g. emails to send out)
2736                 $limit = 1000; // maximum amount of headlines to include
2737
2738                 if ($debug) _debug("Sending digests, batch of max $user_limit users, headline limit = $limit");
2739
2740                 if (DB_TYPE == "pgsql") {
2741                         $interval_query = "last_digest_sent < NOW() - INTERVAL '1 days'";
2742                 } else if (DB_TYPE == "mysql") {
2743                         $interval_query = "last_digest_sent < DATE_SUB(NOW(), INTERVAL 1 DAY)";
2744                 }
2745
2746                 $result = db_query($link, "SELECT id,email FROM ttrss_users
2747                                 WHERE email != '' AND (last_digest_sent IS NULL OR $interval_query)");
2748
2749                 while ($line = db_fetch_assoc($result)) {
2750
2751                         if (get_pref($link, 'DIGEST_ENABLE', $line['id'], false)) {
2752                                 $preferred_ts = strtotime(get_pref($link, 'DIGEST_PREFERRED_TIME', $line['id'], '00:00'));
2753
2754                                 // try to send digests within 2 hours of preferred time
2755                                 if ($preferred_ts && time() >= $preferred_ts &&
2756                                                 time() - $preferred_ts <= 7200) {
2757
2758                                         if ($debug) print "Sending digest for UID:" . $line['id'] . " - " . $line["email"] . " ... ";
2759
2760                                         $do_catchup = get_pref($link, 'DIGEST_CATCHUP', $line['id'], false);
2761
2762                                         global $tz_offset;
2763
2764                                         // reset tz_offset global to prevent tz cache clash between users
2765                                         $tz_offset = -1;
2766
2767                                         $tuple = prepare_headlines_digest($link, $line["id"], 1, $limit);
2768                                         $digest = $tuple[0];
2769                                         $headlines_count = $tuple[1];
2770                                         $affected_ids = $tuple[2];
2771                                         $digest_text = $tuple[3];
2772
2773                                         if ($headlines_count > 0) {
2774
2775                                                 $mail = new PHPMailer();
2776
2777                                                 $mail->PluginDir = "lib/phpmailer/";
2778                                                 $mail->SetLanguage("en", "lib/phpmailer/language/");
2779
2780                                                 $mail->CharSet = "UTF-8";
2781
2782                                                 $mail->From = SMTP_FROM_ADDRESS;
2783                                                 $mail->FromName = SMTP_FROM_NAME;
2784                                                 $mail->AddAddress($line["email"], $line["login"]);
2785
2786                                                 if (SMTP_HOST) {
2787                                                         $mail->Host = SMTP_HOST;
2788                                                         $mail->Mailer = "smtp";
2789                                                         $mail->SMTPAuth = SMTP_LOGIN != '';
2790                                                         $mail->Username = SMTP_LOGIN;
2791                                                         $mail->Password = SMTP_PASSWORD;
2792                                                 }
2793
2794                                                 $mail->IsHTML(true);
2795                                                 $mail->Subject = DIGEST_SUBJECT;
2796                                                 $mail->Body = $digest;
2797                                                 $mail->AltBody = $digest_text;
2798
2799                                                 $rc = $mail->Send();
2800
2801                                                 if (!$rc && $debug) print "ERROR: " . $mail->ErrorInfo;
2802
2803                                                 if ($debug) print "RC=$rc\n";
2804
2805                                                 if ($rc && $do_catchup) {
2806                                                         if ($debug) print "Marking affected articles as read...\n";
2807                                                         catchupArticlesById($link, $affected_ids, 0, $line["id"]);
2808                                                 }
2809                                         } else {
2810                                                 if ($debug) print "No headlines\n";
2811                                         }
2812
2813                                         db_query($link, "UPDATE ttrss_users SET last_digest_sent = NOW()
2814                                                 WHERE id = " . $line["id"]);
2815
2816                                 }
2817                         }
2818                 }
2819
2820                 if ($debug) _debug("All done.");
2821
2822         }
2823
2824         function prepare_headlines_digest($link, $user_id, $days = 1, $limit = 1000) {
2825
2826                 require_once "lib/MiniTemplator.class.php";
2827
2828                 $tpl = new MiniTemplator;
2829                 $tpl_t = new MiniTemplator;
2830
2831                 $tpl->readTemplateFromFile("templates/digest_template_html.txt");
2832                 $tpl_t->readTemplateFromFile("templates/digest_template.txt");
2833
2834                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $user_id);
2835                 $local_ts = convert_timestamp(time(), 'UTC', $user_tz_string);
2836
2837                 $tpl->setVariable('CUR_DATE', date('Y/m/d', $local_ts));
2838                 $tpl->setVariable('CUR_TIME', date('G:i', $local_ts));
2839
2840                 $tpl_t->setVariable('CUR_DATE', date('Y/m/d', $local_ts));
2841                 $tpl_t->setVariable('CUR_TIME', date('G:i', $local_ts));
2842
2843                 $affected_ids = array();
2844
2845                 if (DB_TYPE == "pgsql") {
2846                         $interval_query = "ttrss_entries.date_updated > NOW() - INTERVAL '$days days'";
2847                 } else if (DB_TYPE == "mysql") {
2848                         $interval_query = "ttrss_entries.date_updated > DATE_SUB(NOW(), INTERVAL $days DAY)";
2849                 }
2850
2851                 $result = db_query($link, "SELECT ttrss_entries.title,
2852                                 ttrss_feeds.title AS feed_title,
2853                                 ttrss_feed_categories.title AS cat_title,
2854                                 date_updated,
2855                                 ttrss_user_entries.ref_id,
2856                                 link,
2857                                 score,
2858                                 content,
2859                                 ".SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
2860                         FROM
2861                                 ttrss_user_entries,ttrss_entries,ttrss_feeds
2862                         LEFT JOIN
2863                                 ttrss_feed_categories ON (cat_id = ttrss_feed_categories.id)
2864                         WHERE
2865                                 ref_id = ttrss_entries.id AND feed_id = ttrss_feeds.id
2866                                 AND include_in_digest = true
2867                                 AND $interval_query
2868                                 AND ttrss_user_entries.owner_uid = $user_id
2869                                 AND unread = true
2870                                 AND score >= 0
2871                         ORDER BY ttrss_feed_categories.title, ttrss_feeds.title, score DESC, date_updated DESC
2872                         LIMIT $limit");
2873
2874                 $cur_feed_title = "";
2875
2876                 $headlines_count = db_num_rows($result);
2877
2878                 $headlines = array();
2879
2880                 while ($line = db_fetch_assoc($result)) {
2881                         array_push($headlines, $line);
2882                 }
2883
2884                 for ($i = 0; $i < sizeof($headlines); $i++) {
2885
2886                         $line = $headlines[$i];
2887
2888                         array_push($affected_ids, $line["ref_id"]);
2889
2890                         $updated = make_local_datetime($link, $line['last_updated'], false,
2891                                 $user_id);
2892
2893 /*                      if ($line["score"] != 0) {
2894                                 if ($line["score"] > 0) $line["score"] = '+' . $line["score"];
2895
2896                                 $line["title"] .= " (".$line['score'].")";
2897                         } */
2898
2899                         if (get_pref($link, 'ENABLE_FEED_CATS', $user_id)) {
2900                                 if (!$line['cat_title']) $line['cat_title'] = __("Uncategorized");
2901
2902                                 $line['feed_title'] = $line['cat_title'] . " / " . $line['feed_title'];
2903                         }
2904
2905                         $tpl->setVariable('FEED_TITLE', $line["feed_title"]);
2906                         $tpl->setVariable('ARTICLE_TITLE', $line["title"]);
2907                         $tpl->setVariable('ARTICLE_LINK', $line["link"]);
2908                         $tpl->setVariable('ARTICLE_UPDATED', $updated);
2909                         $tpl->setVariable('ARTICLE_EXCERPT',
2910                                 truncate_string(strip_tags($line["content"]), 300));
2911 //                      $tpl->setVariable('ARTICLE_CONTENT',
2912 //                              strip_tags($article_content));
2913
2914                         $tpl->addBlock('article');
2915
2916                         $tpl_t->setVariable('FEED_TITLE', $line["feed_title"]);
2917                         $tpl_t->setVariable('ARTICLE_TITLE', $line["title"]);
2918                         $tpl_t->setVariable('ARTICLE_LINK', $line["link"]);
2919                         $tpl_t->setVariable('ARTICLE_UPDATED', $updated);
2920 //                      $tpl_t->setVariable('ARTICLE_EXCERPT',
2921 //                              truncate_string(strip_tags($line["excerpt"]), 100));
2922
2923                         $tpl_t->addBlock('article');
2924
2925                         if ($headlines[$i]['feed_title'] != $headlines[$i+1]['feed_title']) {
2926                                 $tpl->addBlock('feed');
2927                                 $tpl_t->addBlock('feed');
2928                         }
2929
2930                 }
2931
2932                 $tpl->addBlock('digest');
2933                 $tpl->generateOutputToString($tmp);
2934
2935                 $tpl_t->addBlock('digest');
2936                 $tpl_t->generateOutputToString($tmp_t);
2937
2938                 return array($tmp, $headlines_count, $affected_ids, $tmp_t);
2939         }
2940
2941         function check_for_update($link) {
2942                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2943                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION;
2944
2945                         $version_data = @fetch_file_contents($version_url);
2946
2947                         if ($version_data) {
2948                                 $version_data = json_decode($version_data, true);
2949                                 if ($version_data && $version_data['version']) {
2950
2951                                         if (version_compare(VERSION, $version_data['version']) == -1) {
2952                                                 return $version_data;
2953                                         }
2954                                 }
2955                         }
2956                 }
2957                 return false;
2958         }
2959
2960         function markArticlesById($link, $ids, $cmode) {
2961
2962                 $tmp_ids = array();
2963
2964                 foreach ($ids as $id) {
2965                         array_push($tmp_ids, "ref_id = '$id'");
2966                 }
2967
2968                 $ids_qpart = join(" OR ", $tmp_ids);
2969
2970                 if ($cmode == 0) {
2971                         db_query($link, "UPDATE ttrss_user_entries SET
2972                         marked = false,last_read = NOW()
2973                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2974                 } else if ($cmode == 1) {
2975                         db_query($link, "UPDATE ttrss_user_entries SET
2976                         marked = true
2977                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2978                 } else {
2979                         db_query($link, "UPDATE ttrss_user_entries SET
2980                         marked = NOT marked,last_read = NOW()
2981                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2982                 }
2983         }
2984
2985         function publishArticlesById($link, $ids, $cmode) {
2986
2987                 $tmp_ids = array();
2988
2989                 foreach ($ids as $id) {
2990                         array_push($tmp_ids, "ref_id = '$id'");
2991                 }
2992
2993                 $ids_qpart = join(" OR ", $tmp_ids);
2994
2995                 if ($cmode == 0) {
2996                         db_query($link, "UPDATE ttrss_user_entries SET
2997                         published = false,last_read = NOW()
2998                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2999                 } else if ($cmode == 1) {
3000                         db_query($link, "UPDATE ttrss_user_entries SET
3001                         published = true
3002                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3003                 } else {
3004                         db_query($link, "UPDATE ttrss_user_entries SET
3005                         published = NOT published,last_read = NOW()
3006                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3007                 }
3008
3009                 if (PUBSUBHUBBUB_HUB) {
3010                         $rss_link = get_self_url_prefix() .
3011                                 "/public.php?op=rss&id=-2&key=" .
3012                                 get_feed_access_key($link, -2, false);
3013
3014                         $p = new Publisher(PUBSUBHUBBUB_HUB);
3015
3016                         $pubsub_result = $p->publish_update($rss_link);
3017                 }
3018         }
3019
3020         function catchupArticlesById($link, $ids, $cmode, $owner_uid = false) {
3021
3022                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3023                 if (count($ids) == 0) return;
3024
3025                 $tmp_ids = array();
3026
3027                 foreach ($ids as $id) {
3028                         array_push($tmp_ids, "ref_id = '$id'");
3029                 }
3030
3031                 $ids_qpart = join(" OR ", $tmp_ids);
3032
3033                 if ($cmode == 0) {
3034                         db_query($link, "UPDATE ttrss_user_entries SET
3035                         unread = false,last_read = NOW()
3036                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3037                 } else if ($cmode == 1) {
3038                         db_query($link, "UPDATE ttrss_user_entries SET
3039                         unread = true
3040                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3041                 } else {
3042                         db_query($link, "UPDATE ttrss_user_entries SET
3043                         unread = NOT unread,last_read = NOW()
3044                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3045                 }
3046
3047                 /* update ccache */
3048
3049                 $result = db_query($link, "SELECT DISTINCT feed_id FROM ttrss_user_entries
3050                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3051
3052                 while ($line = db_fetch_assoc($result)) {
3053                         ccache_update($link, $line["feed_id"], $owner_uid);
3054                 }
3055         }
3056
3057         function catchupArticleById($link, $id, $cmode) {
3058
3059                 if ($cmode == 0) {
3060                         db_query($link, "UPDATE ttrss_user_entries SET
3061                         unread = false,last_read = NOW()
3062                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3063                 } else if ($cmode == 1) {
3064                         db_query($link, "UPDATE ttrss_user_entries SET
3065                         unread = true
3066                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3067                 } else {
3068                         db_query($link, "UPDATE ttrss_user_entries SET
3069                         unread = NOT unread,last_read = NOW()
3070                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3071                 }
3072
3073                 $feed_id = getArticleFeed($link, $id);
3074                 ccache_update($link, $feed_id, $_SESSION["uid"]);
3075         }
3076
3077         function make_guid_from_title($title) {
3078                 return preg_replace("/[ \"\',.:;]/", "-",
3079                         mb_strtolower(strip_tags($title), 'utf-8'));
3080         }
3081
3082         function get_article_tags($link, $id, $owner_uid = 0, $tag_cache = false) {
3083
3084                 global $memcache;
3085
3086                 $a_id = db_escape_string($id);
3087
3088                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3089
3090                 $query = "SELECT DISTINCT tag_name,
3091                         owner_uid as owner FROM
3092                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
3093                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
3094
3095                 $obj_id = md5("TAGS:$owner_uid:$id");
3096                 $tags = array();
3097
3098                 if ($memcache && $obj = $memcache->get($obj_id)) {
3099                         $tags = $obj;
3100                 } else {
3101                         /* check cache first */
3102
3103                         if ($tag_cache === false) {
3104                                 $result = db_query($link, "SELECT tag_cache FROM ttrss_user_entries
3105                                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3106
3107                                 $tag_cache = db_fetch_result($result, 0, "tag_cache");
3108                         }
3109
3110                         if ($tag_cache) {
3111                                 $tags = explode(",", $tag_cache);
3112                         } else {
3113
3114                                 /* do it the hard way */
3115
3116                                 $tmp_result = db_query($link, $query);
3117
3118                                 while ($tmp_line = db_fetch_assoc($tmp_result)) {
3119                                         array_push($tags, $tmp_line["tag_name"]);
3120                                 }
3121
3122                                 /* update the cache */
3123
3124                                 $tags_str = db_escape_string(join(",", $tags));
3125
3126                                 db_query($link, "UPDATE ttrss_user_entries
3127                                         SET tag_cache = '$tags_str' WHERE ref_id = '$id'
3128                                         AND owner_uid = " . $_SESSION["uid"]);
3129                         }
3130
3131                         if ($memcache) $memcache->add($obj_id, $tags, 0, 3600);
3132                 }
3133
3134                 return $tags;
3135         }
3136
3137         function trim_array($array) {
3138                 $tmp = $array;
3139                 array_walk($tmp, 'trim');
3140                 return $tmp;
3141         }
3142
3143         function tag_is_valid($tag) {
3144                 if ($tag == '') return false;
3145                 if (preg_match("/^[0-9]*$/", $tag)) return false;
3146                 if (mb_strlen($tag) > 250) return false;
3147
3148                 if (function_exists('iconv')) {
3149                         $tag = iconv("utf-8", "utf-8", $tag);
3150                 }
3151
3152                 if (!$tag) return false;
3153
3154                 return true;
3155         }
3156
3157         function render_login_form($link, $mobile = 0) {
3158                 switch ($mobile) {
3159                 case 0:
3160                         require_once "login_form.php";
3161                         break;
3162                 case 1:
3163                         require_once "mobile/login_form.php";
3164                         break;
3165                 case 2:
3166                         require_once "mobile/classic/login_form.php";
3167                 }
3168         }
3169
3170         // from http://developer.apple.com/internet/safari/faq.html
3171         function no_cache_incantation() {
3172                 header("Expires: Mon, 22 Dec 1980 00:00:00 GMT"); // Happy birthday to me :)
3173                 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
3174                 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); // HTTP/1.1
3175                 header("Cache-Control: post-check=0, pre-check=0", false);
3176                 header("Pragma: no-cache"); // HTTP/1.0
3177         }
3178
3179         function format_warning($msg, $id = "") {
3180                 global $link;
3181                 return "<div class=\"warning\" id=\"$id\">
3182                         <img src=\"".theme_image($link, "images/sign_excl.png")."\">$msg</div>";
3183         }
3184
3185         function format_notice($msg, $id = "") {
3186                 global $link;
3187                 return "<div class=\"notice\" id=\"$id\">
3188                         <img src=\"".theme_image($link, "images/sign_info.png")."\">$msg</div>";
3189         }
3190
3191         function format_error($msg, $id = "") {
3192                 global $link;
3193                 return "<div class=\"error\" id=\"$id\">
3194                         <img src=\"".theme_image($link, "images/sign_excl.png")."\">$msg</div>";
3195         }
3196
3197         function print_notice($msg) {
3198                 return print format_notice($msg);
3199         }
3200
3201         function print_warning($msg) {
3202                 return print format_warning($msg);
3203         }
3204
3205         function print_error($msg) {
3206                 return print format_error($msg);
3207         }
3208
3209
3210         function T_sprintf() {
3211                 $args = func_get_args();
3212                 return vsprintf(__(array_shift($args)), $args);
3213         }
3214
3215         function format_inline_player($link, $url, $ctype) {
3216
3217                 $entry = "";
3218
3219                 if (strpos($ctype, "audio/") === 0) {
3220
3221                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
3222                                 strpos($_SERVER['HTTP_USER_AGENT'], "Chrome") !== false ||
3223                                 strpos($_SERVER['HTTP_USER_AGENT'], "Safari") !== false )) {
3224
3225                                 $id = 'AUDIO-' . uniqid();
3226
3227                                 $entry .= "<audio id=\"$id\"\">
3228                                         <source src=\"$url\"></source>
3229                                         </audio>";
3230
3231                                 $entry .= "<span onclick=\"player(this)\"
3232                                         title=\"".__("Click to play")."\" status=\"0\"
3233                                         class=\"player\" audio-id=\"$id\">".__("Play")."</span>";
3234
3235                         } else {
3236
3237                                 $entry .= "<object type=\"application/x-shockwave-flash\"
3238                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
3239                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
3240                                         <param name=\"movie\"
3241                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
3242                                         </object>";
3243                         }
3244                 }
3245
3246                 $filename = substr($url, strrpos($url, "/")+1);
3247
3248                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3249                         $filename . " (" . $ctype . ")" . "</a>";
3250
3251                 return $entry;
3252         }
3253
3254         function format_article($link, $id, $mark_as_read = true, $zoom_mode = false) {
3255
3256                 $rv = array();
3257
3258                 $rv['id'] = $id;
3259
3260                 /* we can figure out feed_id from article id anyway, why do we
3261                  * pass feed_id here? let's ignore the argument :( */
3262
3263                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3264                         WHERE ref_id = '$id'");
3265
3266                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
3267
3268                 $rv['feed_id'] = $feed_id;
3269
3270                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
3271
3272                 $result = db_query($link, "SELECT rtl_content, always_display_enclosures FROM ttrss_feeds
3273                         WHERE id = '$feed_id' AND owner_uid = " . $_SESSION["uid"]);
3274
3275                 if (db_num_rows($result) == 1) {
3276                         $rtl_content = sql_bool_to_bool(db_fetch_result($result, 0, "rtl_content"));
3277                         $always_display_enclosures = sql_bool_to_bool(db_fetch_result($result, 0, "always_display_enclosures"));
3278                 } else {
3279                         $rtl_content = false;
3280                         $always_display_enclosures = false;
3281                 }
3282
3283                 if ($rtl_content) {
3284                         $rtl_tag = "dir=\"RTL\"";
3285                         $rtl_class = "RTL";
3286                 } else {
3287                         $rtl_tag = "";
3288                         $rtl_class = "";
3289                 }
3290
3291                 if ($mark_as_read) {
3292                         $result = db_query($link, "UPDATE ttrss_user_entries
3293                                 SET unread = false,last_read = NOW()
3294                                 WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3295
3296                         ccache_update($link, $feed_id, $_SESSION["uid"]);
3297                 }
3298
3299                 $result = db_query($link, "SELECT title,link,content,feed_id,comments,int_id,
3300                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
3301                         (SELECT icon_url FROM ttrss_feeds WHERE id = feed_id) as icon_url,
3302                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
3303                         num_comments,
3304                         tag_cache,
3305                         author,
3306                         orig_feed_id,
3307                         note
3308                         FROM ttrss_entries,ttrss_user_entries
3309                         WHERE   id = '$id' AND ref_id = id AND owner_uid = " . $_SESSION["uid"]);
3310
3311                 if ($result) {
3312
3313                         $line = db_fetch_assoc($result);
3314
3315                         if ($line["icon_url"]) {
3316                                 $feed_icon = "<img src=\"" . $line["icon_url"] . "\">";
3317                         } else {
3318                                 $feed_icon = "&nbsp;";
3319                         }
3320
3321                         $feed_site_url = $line['site_url'];
3322
3323                         $num_comments = $line["num_comments"];
3324                         $entry_comments = "";
3325
3326                         if ($num_comments > 0) {
3327                                 if ($line["comments"]) {
3328                                         $comments_url = $line["comments"];
3329                                 } else {
3330                                         $comments_url = $line["link"];
3331                                 }
3332                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
3333                         } else {
3334                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
3335                                         $entry_comments = "<a target='_blank' href=\"".$line["comments"]."\">comments</a>";
3336                                 }
3337                         }
3338
3339                         if ($zoom_mode) {
3340                                 header("Content-Type: text/html");
3341                                 $rv['content'] .= "<html><head>
3342                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
3343                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
3344                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
3345                                         </head><body>";
3346                         }
3347
3348                         $rv['content'] .= "<div id=\"PTITLE-$id\" style=\"display : none\">" .
3349                                 truncate_string(strip_tags($line['title']), 15) . "</div>";
3350
3351                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
3352
3353                         $rv['content'] .= "<div onclick=\"return postClicked(event, $id)\"
3354                                 class=\"postHeader\" id=\"POSTHDR-$id\">";
3355
3356                         $entry_author = $line["author"];
3357
3358                         if ($entry_author) {
3359                                 $entry_author = __(" - ") . $entry_author;
3360                         }
3361
3362                         $parsed_updated = make_local_datetime($link, $line["updated"], true,
3363                                 false, true);
3364
3365                         $rv['content'] .= "<div class=\"postDate$rtl_class\">$parsed_updated</div>";
3366
3367                         if ($line["link"]) {
3368                                 $rv['content'] .= "<div clear='both'><a target='_blank'
3369                                         title=\"".htmlspecialchars($line['title'])."\"
3370                                         href=\"" .
3371                                         $line["link"] . "\">" .
3372                                         truncate_string($line["title"], 100) .
3373                                         "<span class='author'>$entry_author</span></a></div>";
3374                         } else {
3375                                 $rv['content'] .= "<div clear='both'>" . $line["title"] . "$entry_author</div>";
3376                         }
3377
3378                         $tag_cache = $line["tag_cache"];
3379
3380                         if (!$tag_cache)
3381                                 $tags = get_article_tags($link, $id);
3382                         else
3383                                 $tags = explode(",", $tag_cache);
3384
3385                         $tags_str = format_tags_string($tags, $id);
3386                         $tags_str_full = join(", ", $tags);
3387
3388                         if (!$tags_str_full) $tags_str_full = __("no tags");
3389
3390                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
3391
3392                         $rv['content'] .= "<div style='float : right'>
3393                                 <img src='".theme_image($link, 'images/tag.png')."'
3394                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
3395
3396                         if (!$zoom_mode) {
3397                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
3398                                         <a title=\"".__('Edit tags for this article')."\"
3399                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
3400
3401                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
3402                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
3403                                         position=\"below\">$tags_str_full</div>";
3404
3405                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/art-zoom.png')."\"
3406                                                 class='tagsPic' style=\"cursor : pointer\"
3407                                                 onclick=\"postOpenInNewTab(event, $id)\"
3408                                                 alt='Zoom' title='".__('Open article in new tab')."'>";
3409
3410                                 $button_plugins = explode(",", ARTICLE_BUTTON_PLUGINS);
3411
3412                                 foreach ($button_plugins as $p) {
3413                                         $pclass = trim("${p}_button");
3414
3415                                         if (class_exists($pclass)) {
3416                                                 $plugin = new $pclass($link);
3417                                                 $rv['content'] .= $plugin->render($id, $line);
3418                                         }
3419                                 }
3420
3421                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/digest_checkbox.png')."\"
3422                                                 class='tagsPic' style=\"cursor : pointer\"
3423                                                 onclick=\"closeArticlePanel($id)\"
3424                                                 title='".__('Close article')."'>";
3425
3426                         } else {
3427                                 $tags_str = strip_tags($tags_str);
3428                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
3429                         }
3430                         $rv['content'] .= "</div>";
3431                         $rv['content'] .= "<div clear='both'>$entry_comments</div>";
3432
3433                         if ($line["orig_feed_id"]) {
3434
3435                                 $tmp_result = db_query($link, "SELECT * FROM ttrss_archived_feeds
3436                                         WHERE id = ".$line["orig_feed_id"]);
3437
3438                                 if (db_num_rows($tmp_result) != 0) {
3439
3440                                         $rv['content'] .= "<div clear='both'>";
3441                                         $rv['content'] .= __("Originally from:");
3442
3443                                         $rv['content'] .= "&nbsp;";
3444
3445                                         $tmp_line = db_fetch_assoc($tmp_result);
3446
3447                                         $rv['content'] .= "<a target='_blank'
3448                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
3449                                                 $tmp_line['title'] . "</a>";
3450
3451                                         $rv['content'] .= "&nbsp;";
3452
3453                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3454                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.png'></a>";
3455
3456                                         $rv['content'] .= "</div>";
3457                                 }
3458                         }
3459
3460                         $rv['content'] .= "</div>";
3461
3462                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3463                                 if ($line['note']) {
3464                                         $rv['content'] .= format_article_note($id, $line['note']);
3465                                 }
3466                         $rv['content'] .= "</div>";
3467
3468                         $rv['content'] .= "<div class=\"postIcon\">" .
3469                                 "<a target=\"_blank\" title=\"".__("Visit the website")."\"$
3470                                 href=\"".htmlspecialchars($feed_site_url)."\">".
3471                                 $feed_icon . "</a></div>";
3472
3473                         $rv['content'] .= "<div class=\"postContent\">";
3474
3475                         $article_content = sanitize($link, $line["content"], false, false,
3476                                 $feed_site_url);
3477
3478                         $rv['content'] .= $article_content;
3479
3480                         $rv['content'] .= format_article_enclosures($link, $id,
3481                                 $always_display_enclosures, $article_content);
3482
3483                         $rv['content'] .= "</div>";
3484
3485                         $rv['content'] .= "</div>";
3486
3487                 }
3488
3489                 if ($zoom_mode) {
3490                         $rv['content'] .= "
3491                                 <div style=\"text-align : center\">
3492                                 <button onclick=\"return window.close()\">".
3493                                         __("Close this window")."</button></div>";
3494                         $rv['content'] .= "</body></html>";
3495                 }
3496
3497                 return $rv;
3498
3499         }
3500
3501         function print_checkpoint($n, $s) {
3502                 $ts = getmicrotime();
3503                 echo sprintf("<!-- CP[$n] %.4f seconds -->", $ts - $s);
3504                 return $ts;
3505         }
3506
3507         function sanitize_tag($tag) {
3508                 $tag = trim($tag);
3509
3510                 $tag = mb_strtolower($tag, 'utf-8');
3511
3512                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3513
3514 //              $tag = str_replace('"', "", $tag);
3515 //              $tag = str_replace("+", " ", $tag);
3516                 $tag = str_replace("technorati tag: ", "", $tag);
3517
3518                 return $tag;
3519         }
3520
3521         function get_self_url_prefix() {
3522                 return SELF_URL_PATH;
3523         }
3524
3525         function opml_publish_url($link){
3526
3527                 $url_path = get_self_url_prefix();
3528                 $url_path .= "/opml.php?op=publish&key=" .
3529                         get_feed_access_key($link, 'OPML:Publish', false, $_SESSION["uid"]);
3530
3531                 return $url_path;
3532         }
3533
3534         /**
3535          * Purge a feed contents, marked articles excepted.
3536          *
3537          * @param mixed $link The database connection.
3538          * @param integer $id The id of the feed to purge.
3539          * @return void
3540          */
3541         function clear_feed_articles($link, $id) {
3542
3543                 if ($id != 0) {
3544                         $result = db_query($link, "DELETE FROM ttrss_user_entries
3545                         WHERE feed_id = '$id' AND marked = false AND owner_uid = " . $_SESSION["uid"]);
3546                 } else {
3547                         $result = db_query($link, "DELETE FROM ttrss_user_entries
3548                         WHERE feed_id IS NULL AND marked = false AND owner_uid = " . $_SESSION["uid"]);
3549                 }
3550
3551                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
3552                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
3553
3554                 ccache_update($link, $id, $_SESSION['uid']);
3555         } // function clear_feed_articles
3556
3557         /**
3558          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3559          *
3560          * @return string The Mozilla Firefox feed adding URL.
3561          */
3562         function add_feed_url() {
3563                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3564
3565                 $url_path = get_self_url_prefix() .
3566                         "/backend.php?op=pref-feeds&quiet=1&method=add&feed_url=%s";
3567                 return $url_path;
3568         } // function add_feed_url
3569
3570         function encrypt_password($pass, $salt = '', $mode2 = false) {
3571                 if ($salt && $mode2) {
3572                         return "MODE2:" . hash('sha256', $salt . $pass);
3573                 } else if ($salt) {
3574                         return "SHA1X:" . sha1("$salt:$pass");
3575                 } else {
3576                         return "SHA1:" . sha1($pass);
3577                 }
3578         } // function encrypt_password
3579
3580         function sanitize_article_content($text) {
3581                 # we don't support CDATA sections in articles, they break our own escaping
3582                 $text = preg_replace("/\[\[CDATA/", "", $text);
3583                 $text = preg_replace("/\]\]\>/", "", $text);
3584                 return $text;
3585         }
3586
3587         function load_filters($link, $feed, $owner_uid, $action_id = false) {
3588                 $filters = array();
3589
3590                 global $memcache;
3591
3592                 $obj_id = md5("FILTER:$feed:$owner_uid:$action_id");
3593
3594                 if ($memcache && $obj = $memcache->get($obj_id)) {
3595
3596                         return $obj;
3597
3598                 } else {
3599
3600                         if ($action_id) $ftype_query_part = "action_id = '$action_id' AND";
3601
3602                         $result = db_query($link, "SELECT reg_exp,
3603                                 ttrss_filter_types.name AS name,
3604                                 ttrss_filter_actions.name AS action,
3605                                 inverse,
3606                                 action_param,
3607                                 filter_param
3608                                 FROM ttrss_filters
3609                                         LEFT JOIN ttrss_feeds ON (ttrss_feeds.id = '$feed'),
3610                                         ttrss_filter_types,ttrss_filter_actions
3611                                 WHERE
3612                                         enabled = true AND
3613                                         $ftype_query_part
3614                                         ttrss_filters.owner_uid = $owner_uid AND
3615                                         ttrss_filter_types.id = filter_type AND
3616                                         ttrss_filter_actions.id = action_id AND
3617                                         ((cat_filter = true AND ttrss_feeds.cat_id = ttrss_filters.cat_id) OR
3618                                         (cat_filter = true AND ttrss_feeds.cat_id IS NULL AND
3619                                                 ttrss_filters.cat_id IS NULL) OR
3620                                         (cat_filter = false AND (feed_id IS NULL OR feed_id = '$feed')))
3621                                 ORDER BY reg_exp");
3622
3623                         while ($line = db_fetch_assoc($result)) {
3624
3625                                 if (!$filters[$line["name"]]) $filters[$line["name"]] = array();
3626                                         $filter["reg_exp"] = $line["reg_exp"];
3627                                         $filter["action"] = $line["action"];
3628                                         $filter["action_param"] = $line["action_param"];
3629                                         $filter["filter_param"] = $line["filter_param"];
3630                                         $filter["inverse"] = sql_bool_to_bool($line["inverse"]);
3631
3632                                         array_push($filters[$line["name"]], $filter);
3633                                 }
3634
3635                         if ($memcache) $memcache->add($obj_id, $filters, 0, 3600*8);
3636
3637                         return $filters;
3638                 }
3639         }
3640
3641         function get_score_pic($score) {
3642                 if ($score > 100) {
3643                         return "score_high.png";
3644                 } else if ($score > 0) {
3645                         return "score_half_high.png";
3646                 } else if ($score < -100) {
3647                         return "score_low.png";
3648                 } else if ($score < 0) {
3649                         return "score_half_low.png";
3650                 } else {
3651                         return "score_neutral.png";
3652                 }
3653         }
3654
3655         function feed_has_icon($id) {
3656                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3657         }
3658
3659         function init_connection($link) {
3660                 if ($link) {
3661
3662                         if (DB_TYPE == "pgsql") {
3663                                 pg_query($link, "set client_encoding = 'UTF-8'");
3664                                 pg_set_client_encoding("UNICODE");
3665                                 pg_query($link, "set datestyle = 'ISO, european'");
3666                                 pg_query($link, "set TIME ZONE 0");
3667                         } else {
3668                                 db_query($link, "SET time_zone = '+0:0'");
3669
3670                                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
3671                                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
3672                                 }
3673                         }
3674                         return true;
3675                 } else {
3676                         print "Unable to connect to database:" . db_last_error();
3677                         return false;
3678                 }
3679         }
3680
3681         /* function ccache_zero($link, $feed_id, $owner_uid) {
3682                 db_query($link, "UPDATE ttrss_counters_cache SET
3683                         value = 0, updated = NOW() WHERE
3684                         feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3685         } */
3686
3687         function ccache_zero_all($link, $owner_uid) {
3688                 db_query($link, "UPDATE ttrss_counters_cache SET
3689                         value = 0 WHERE owner_uid = '$owner_uid'");
3690
3691                 db_query($link, "UPDATE ttrss_cat_counters_cache SET
3692                         value = 0 WHERE owner_uid = '$owner_uid'");
3693         }
3694
3695         function ccache_remove($link, $feed_id, $owner_uid, $is_cat = false) {
3696
3697                 if (!$is_cat) {
3698                         $table = "ttrss_counters_cache";
3699                 } else {
3700                         $table = "ttrss_cat_counters_cache";
3701                 }
3702
3703                 db_query($link, "DELETE FROM $table WHERE
3704                         feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3705
3706         }
3707
3708         function ccache_update_all($link, $owner_uid) {
3709
3710                 if (get_pref($link, 'ENABLE_FEED_CATS', $owner_uid)) {
3711
3712                         $result = db_query($link, "SELECT feed_id FROM ttrss_cat_counters_cache
3713                                 WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
3714
3715                         while ($line = db_fetch_assoc($result)) {
3716                                 ccache_update($link, $line["feed_id"], $owner_uid, true);
3717                         }
3718
3719                         /* We have to manually include category 0 */
3720
3721                         ccache_update($link, 0, $owner_uid, true);
3722
3723                 } else {
3724                         $result = db_query($link, "SELECT feed_id FROM ttrss_counters_cache
3725                                 WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
3726
3727                         while ($line = db_fetch_assoc($result)) {
3728                                 print ccache_update($link, $line["feed_id"], $owner_uid);
3729
3730                         }
3731
3732                 }
3733         }
3734
3735         function ccache_find($link, $feed_id, $owner_uid, $is_cat = false,
3736                 $no_update = false) {
3737
3738                 if (!is_numeric($feed_id)) return;
3739
3740                 if (!$is_cat) {
3741                         $table = "ttrss_counters_cache";
3742                         if ($feed_id > 0) {
3743                                 $tmp_result = db_query($link, "SELECT owner_uid FROM ttrss_feeds
3744                                         WHERE id = '$feed_id'");
3745                                 $owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
3746                         }
3747                 } else {
3748                         $table = "ttrss_cat_counters_cache";
3749                 }
3750
3751                 if (DB_TYPE == "pgsql") {
3752                         $date_qpart = "updated > NOW() - INTERVAL '15 minutes'";
3753                 } else if (DB_TYPE == "mysql") {
3754                         $date_qpart = "updated > DATE_SUB(NOW(), INTERVAL 15 MINUTE)";
3755                 }
3756
3757                 $result = db_query($link, "SELECT value FROM $table
3758                         WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id'
3759                         LIMIT 1");
3760
3761                 if (db_num_rows($result) == 1) {
3762                         return db_fetch_result($result, 0, "value");
3763                 } else {
3764                         if ($no_update) {
3765                                 return -1;
3766                         } else {
3767                                 return ccache_update($link, $feed_id, $owner_uid, $is_cat);
3768                         }
3769                 }
3770
3771         }
3772
3773         function ccache_update($link, $feed_id, $owner_uid, $is_cat = false,
3774                 $update_pcat = true) {
3775
3776                 if (!is_numeric($feed_id)) return;
3777
3778                 if (!$is_cat && $feed_id > 0) {
3779                         $tmp_result = db_query($link, "SELECT owner_uid FROM ttrss_feeds
3780                                 WHERE id = '$feed_id'");
3781                         $owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
3782                 }
3783
3784                 $prev_unread = ccache_find($link, $feed_id, $owner_uid, $is_cat, true);
3785
3786                 /* When updating a label, all we need to do is recalculate feed counters
3787                  * because labels are not cached */
3788
3789                 if ($feed_id < 0) {
3790                         ccache_update_all($link, $owner_uid);
3791                         return;
3792                 }
3793
3794                 if (!$is_cat) {
3795                         $table = "ttrss_counters_cache";
3796                 } else {
3797                         $table = "ttrss_cat_counters_cache";
3798                 }
3799
3800                 if ($is_cat && $feed_id >= 0) {
3801                         if ($feed_id != 0) {
3802                                 $cat_qpart = "cat_id = '$feed_id'";
3803                         } else {
3804                                 $cat_qpart = "cat_id IS NULL";
3805                         }
3806
3807                         /* Recalculate counters for child feeds */
3808
3809                         $result = db_query($link, "SELECT id FROM ttrss_feeds
3810                                                 WHERE owner_uid = '$owner_uid' AND $cat_qpart");
3811
3812                         while ($line = db_fetch_assoc($result)) {
3813                                 ccache_update($link, $line["id"], $owner_uid, false, false);
3814                         }
3815
3816                         $result = db_query($link, "SELECT SUM(value) AS sv
3817                                 FROM ttrss_counters_cache, ttrss_feeds
3818                                 WHERE id = feed_id AND $cat_qpart AND
3819                                 ttrss_feeds.owner_uid = '$owner_uid'");
3820
3821                         $unread = (int) db_fetch_result($result, 0, "sv");
3822
3823                 } else {
3824                         $unread = (int) getFeedArticles($link, $feed_id, $is_cat, true, $owner_uid);
3825                 }
3826
3827                 db_query($link, "BEGIN");
3828
3829                 $result = db_query($link, "SELECT feed_id FROM $table
3830                         WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id' LIMIT 1");
3831
3832                 if (db_num_rows($result) == 1) {
3833                         db_query($link, "UPDATE $table SET
3834                                 value = '$unread', updated = NOW() WHERE
3835                                 feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3836
3837                 } else {
3838                         db_query($link, "INSERT INTO $table
3839                                 (feed_id, value, owner_uid, updated)
3840                                 VALUES
3841                                 ($feed_id, $unread, $owner_uid, NOW())");
3842                 }
3843
3844                 db_query($link, "COMMIT");
3845
3846                 if ($feed_id > 0 && $prev_unread != $unread) {
3847
3848                         if (!$is_cat) {
3849
3850                                 /* Update parent category */
3851
3852                                 if ($update_pcat) {
3853
3854                                         $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
3855                                                 WHERE owner_uid = '$owner_uid' AND id = '$feed_id'");
3856
3857                                         $cat_id = (int) db_fetch_result($result, 0, "cat_id");
3858
3859                                         ccache_update($link, $cat_id, $owner_uid, true);
3860
3861                                 }
3862                         }
3863                 } else if ($feed_id < 0) {
3864                         ccache_update_all($link, $owner_uid);
3865                 }
3866
3867                 return $unread;
3868         }
3869
3870         /* function ccache_cleanup($link, $owner_uid) {
3871
3872                 if (DB_TYPE == "pgsql") {
3873                         db_query($link, "DELETE FROM ttrss_counters_cache AS c1 WHERE
3874                                 (SELECT count(*) FROM ttrss_counters_cache AS c2
3875                                         WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
3876                                         AND owner_uid = '$owner_uid'");
3877
3878                         db_query($link, "DELETE FROM ttrss_cat_counters_cache AS c1 WHERE
3879                                 (SELECT count(*) FROM ttrss_cat_counters_cache AS c2
3880                                         WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
3881                                         AND owner_uid = '$owner_uid'");
3882                 } else {
3883                         db_query($link, "DELETE c1 FROM
3884                                         ttrss_counters_cache AS c1,
3885                                         ttrss_counters_cache AS c2
3886                                 WHERE
3887                                         c1.owner_uid = '$owner_uid' AND
3888                                         c1.owner_uid = c2.owner_uid AND
3889                                         c1.feed_id = c2.feed_id");
3890
3891                         db_query($link, "DELETE c1 FROM
3892                                         ttrss_cat_counters_cache AS c1,
3893                                         ttrss_cat_counters_cache AS c2
3894                                 WHERE
3895                                         c1.owner_uid = '$owner_uid' AND
3896                                         c1.owner_uid = c2.owner_uid AND
3897                                         c1.feed_id = c2.feed_id");
3898
3899                 }
3900         } */
3901
3902         function label_find_id($link, $label, $owner_uid) {
3903                 $result = db_query($link,
3904                         "SELECT id FROM ttrss_labels2 WHERE caption = '$label'
3905                                 AND owner_uid = '$owner_uid' LIMIT 1");
3906
3907                 if (db_num_rows($result) == 1) {
3908                         return db_fetch_result($result, 0, "id");
3909                 } else {
3910                         return 0;
3911                 }
3912         }
3913
3914         function get_article_labels($link, $id) {
3915                 global $memcache;
3916
3917                 $obj_id = md5("LABELS:$id:" . $_SESSION["uid"]);
3918
3919                 $rv = array();
3920
3921                 if ($memcache && $obj = $memcache->get($obj_id)) {
3922                         return $obj;
3923                 } else {
3924
3925                         $result = db_query($link, "SELECT label_cache FROM
3926                                 ttrss_user_entries WHERE ref_id = '$id' AND owner_uid = " .
3927                                 $_SESSION["uid"]);
3928
3929                         $label_cache = db_fetch_result($result, 0, "label_cache");
3930
3931                         if ($label_cache) {
3932
3933                                 $label_cache = json_decode($label_cache, true);
3934
3935                                 if ($label_cache["no-labels"] == 1)
3936                                         return $rv;
3937                                 else
3938                                         return $label_cache;
3939                         }
3940
3941                         $result = db_query($link,
3942                                 "SELECT DISTINCT label_id,caption,fg_color,bg_color
3943                                         FROM ttrss_labels2, ttrss_user_labels2
3944                                 WHERE id = label_id
3945                                         AND article_id = '$id'
3946                                         AND owner_uid = ".$_SESSION["uid"] . "
3947                                 ORDER BY caption");
3948
3949                         while ($line = db_fetch_assoc($result)) {
3950                                 $rk = array($line["label_id"], $line["caption"], $line["fg_color"],
3951                                         $line["bg_color"]);
3952                                 array_push($rv, $rk);
3953                         }
3954                         if ($memcache) $memcache->add($obj_id, $rv, 0, 3600);
3955
3956                         if (count($rv) > 0)
3957                                 label_update_cache($link, $id, $rv);
3958                         else
3959                                 label_update_cache($link, $id, array("no-labels" => 1));
3960                 }
3961
3962                 return $rv;
3963         }
3964
3965
3966         function label_find_caption($link, $label, $owner_uid) {
3967                 $result = db_query($link,
3968                         "SELECT caption FROM ttrss_labels2 WHERE id = '$label'
3969                                 AND owner_uid = '$owner_uid' LIMIT 1");
3970
3971                 if (db_num_rows($result) == 1) {
3972                         return db_fetch_result($result, 0, "caption");
3973                 } else {
3974                         return "";
3975                 }
3976         }
3977
3978         function label_update_cache($link, $id, $labels = false, $force = false) {
3979
3980                 if ($force)
3981                         label_clear_cache($link, $id);
3982
3983                 if (!$labels)
3984                         $labels = get_article_labels($link, $id);
3985
3986                 $labels = db_escape_string(json_encode($labels));
3987
3988                 db_query($link, "UPDATE ttrss_user_entries SET
3989                         label_cache = '$labels' WHERE ref_id = '$id'");
3990
3991         }
3992
3993         function label_clear_cache($link, $id) {
3994
3995                 db_query($link, "UPDATE ttrss_user_entries SET
3996                         label_cache = '' WHERE ref_id = '$id'");
3997
3998         }
3999
4000         function label_remove_article($link, $id, $label, $owner_uid) {
4001
4002                 $label_id = label_find_id($link, $label, $owner_uid);
4003
4004                 if (!$label_id) return;
4005
4006                 $result = db_query($link,
4007                         "DELETE FROM ttrss_user_labels2
4008                         WHERE
4009                                 label_id = '$label_id' AND
4010                                 article_id = '$id'");
4011
4012                 label_clear_cache($link, $id);
4013         }
4014
4015         function label_add_article($link, $id, $label, $owner_uid) {
4016
4017                 global $memcache;
4018
4019                 if ($memcache) {
4020                         $obj_id = md5("LABELS:$id:$owner_uid");
4021                         $memcache->delete($obj_id);
4022                 }
4023
4024                 $label_id = label_find_id($link, $label, $owner_uid);
4025
4026                 if (!$label_id) return;
4027
4028                 $result = db_query($link,
4029                         "SELECT
4030                                 article_id FROM ttrss_labels2, ttrss_user_labels2
4031                         WHERE
4032                                 label_id = id AND
4033                                 label_id = '$label_id' AND
4034                                 article_id = '$id' AND owner_uid = '$owner_uid'
4035                         LIMIT 1");
4036
4037                 if (db_num_rows($result) == 0) {
4038                         db_query($link, "INSERT INTO ttrss_user_labels2
4039                                 (label_id, article_id) VALUES ('$label_id', '$id')");
4040                 }
4041
4042                 label_clear_cache($link, $id);
4043
4044         }
4045
4046         function label_remove($link, $id, $owner_uid) {
4047                 global $memcache;
4048
4049                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4050
4051                 if ($memcache) {
4052                         $obj_id = md5("LABELS:$id:$owner_uid");
4053                         $memcache->delete($obj_id);
4054                 }
4055
4056                 db_query($link, "BEGIN");
4057
4058                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
4059                         WHERE id = '$id'");
4060
4061                 $caption = db_fetch_result($result, 0, "caption");
4062
4063                 $result = db_query($link, "DELETE FROM ttrss_labels2 WHERE id = '$id'
4064                         AND owner_uid = " . $owner_uid);
4065
4066                 if (db_affected_rows($link, $result) != 0 && $caption) {
4067
4068                         /* Remove access key for the label */
4069
4070                         $ext_id = -11 - $id;
4071
4072                         db_query($link, "DELETE FROM ttrss_access_keys WHERE
4073                                 feed_id = '$ext_id' AND owner_uid = $owner_uid");
4074
4075                         /* Disable filters that reference label being removed */
4076
4077                         db_query($link, "UPDATE ttrss_filters SET
4078                                 enabled = false WHERE action_param = '$caption'
4079                                         AND action_id = 7
4080                                         AND owner_uid = " . $owner_uid);
4081
4082                         /* Remove cached data */
4083
4084                         db_query($link, "UPDATE ttrss_user_entries SET label_cache = ''
4085                                 WHERE label_cache LIKE '%$caption%' AND owner_uid = " . $owner_uid);
4086
4087                 }
4088
4089                 db_query($link, "COMMIT");
4090         }
4091
4092         function label_create($link, $caption, $fg_color = '', $bg_color = '', $owner_uid) {
4093
4094                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
4095
4096                 db_query($link, "BEGIN");
4097
4098                 $result = false;
4099
4100                 $result = db_query($link, "SELECT id FROM ttrss_labels2
4101                         WHERE caption = '$caption' AND owner_uid = $owner_uid");
4102
4103                 if (db_num_rows($result) == 0) {
4104                         $result = db_query($link,
4105                                 "INSERT INTO ttrss_labels2 (caption,owner_uid,fg_color,bg_color)
4106                                         VALUES ('$caption', '$owner_uid', '$fg_color', '$bg_color')");
4107
4108                         $result = db_affected_rows($link, $result) != 0;
4109                 }
4110
4111                 db_query($link, "COMMIT");
4112
4113                 return $result;
4114         }
4115
4116         function format_tags_string($tags, $id) {
4117
4118                 $tags_str = "";
4119                 $tags_nolinks_str = "";
4120
4121                 $num_tags = 0;
4122
4123                 $tag_limit = 6;
4124
4125                 $formatted_tags = array();
4126
4127                 foreach ($tags as $tag) {
4128                         $num_tags++;
4129                         $tag_escaped = str_replace("'", "\\'", $tag);
4130
4131                         if (mb_strlen($tag) > 30) {
4132                                 $tag = truncate_string($tag, 30);
4133                         }
4134
4135                         $tag_str = "<a href=\"javascript:viewfeed('$tag_escaped')\">$tag</a>";
4136
4137                         array_push($formatted_tags, $tag_str);
4138
4139                         $tmp_tags_str = implode(", ", $formatted_tags);
4140
4141                         if ($num_tags == $tag_limit || mb_strlen($tmp_tags_str) > 150) {
4142                                 break;
4143                         }
4144                 }
4145
4146                 $tags_str = implode(", ", $formatted_tags);
4147
4148                 if ($num_tags < count($tags)) {
4149                         $tags_str .= ", &hellip;";
4150                 }
4151
4152                 if ($num_tags == 0) {
4153                         $tags_str = __("no tags");
4154                 }
4155
4156                 return $tags_str;
4157
4158         }
4159
4160         function format_article_labels($labels, $id) {
4161
4162                 $labels_str = "";
4163
4164                 foreach ($labels as $l) {
4165                         $labels_str .= sprintf("<span class='hlLabelRef'
4166                                 style='color : %s; background-color : %s'>%s</span>",
4167                                         $l[2], $l[3], $l[1]);
4168                         }
4169
4170                 return $labels_str;
4171
4172         }
4173
4174         function format_article_note($id, $note) {
4175
4176                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
4177                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
4178                         __('(edit note)')."</div>$note</div>";
4179
4180                 return $str;
4181         }
4182
4183         function toggle_collapse_cat($link, $cat_id, $mode) {
4184                 if ($cat_id > 0) {
4185                         $mode = bool_to_sql_bool($mode);
4186
4187                         db_query($link, "UPDATE ttrss_feed_categories SET
4188                                 collapsed = $mode WHERE id = '$cat_id' AND owner_uid = " .
4189                                 $_SESSION["uid"]);
4190                 } else {
4191                         $pref_name = '';
4192
4193                         switch ($cat_id) {
4194                         case -1:
4195                                 $pref_name = '_COLLAPSED_SPECIAL';
4196                                 break;
4197                         case -2:
4198                                 $pref_name = '_COLLAPSED_LABELS';
4199                                 break;
4200                         case 0:
4201                                 $pref_name = '_COLLAPSED_UNCAT';
4202                                 break;
4203                         }
4204
4205                         if ($pref_name) {
4206                                 if ($mode) {
4207                                         set_pref($link, $pref_name, 'true');
4208                                 } else {
4209                                         set_pref($link, $pref_name, 'false');
4210                                 }
4211                         }
4212                 }
4213         }
4214
4215         function remove_feed($link, $id, $owner_uid) {
4216
4217                 if ($id > 0) {
4218
4219                         /* save starred articles in Archived feed */
4220
4221                         db_query($link, "BEGIN");
4222
4223                         /* prepare feed if necessary */
4224
4225                         $result = db_query($link, "SELECT id FROM ttrss_archived_feeds
4226                                 WHERE id = '$id'");
4227
4228                         if (db_num_rows($result) == 0) {
4229                                 db_query($link, "INSERT INTO ttrss_archived_feeds
4230                                         (id, owner_uid, title, feed_url, site_url)
4231                                 SELECT id, owner_uid, title, feed_url, site_url from ttrss_feeds
4232                                 WHERE id = '$id'");
4233                         }
4234
4235                         db_query($link, "UPDATE ttrss_user_entries SET feed_id = NULL,
4236                                 orig_feed_id = '$id' WHERE feed_id = '$id' AND
4237                                         marked = true AND owner_uid = $owner_uid");
4238
4239                         /* Remove access key for the feed */
4240
4241                         db_query($link, "DELETE FROM ttrss_access_keys WHERE
4242                                 feed_id = '$id' AND owner_uid = $owner_uid");
4243
4244                         /* remove the feed */
4245
4246                         db_query($link, "DELETE FROM ttrss_feeds
4247                                         WHERE id = '$id' AND owner_uid = $owner_uid");
4248
4249                         db_query($link, "COMMIT");
4250
4251                         if (file_exists(ICONS_DIR . "/$id.ico")) {
4252                                 unlink(ICONS_DIR . "/$id.ico");
4253                         }
4254
4255                         ccache_remove($link, $id, $owner_uid);
4256
4257                 } else {
4258                         label_remove($link, -11-$id, $owner_uid);
4259                         ccache_remove($link, -11-$id, $owner_uid);
4260                 }
4261         }
4262
4263         function add_feed_category($link, $feed_cat) {
4264
4265                 if (!$feed_cat) return false;
4266
4267                 db_query($link, "BEGIN");
4268
4269                 $result = db_query($link,
4270                         "SELECT id FROM ttrss_feed_categories
4271                         WHERE title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
4272
4273                 if (db_num_rows($result) == 0) {
4274
4275                         $result = db_query($link,
4276                                 "INSERT INTO ttrss_feed_categories (owner_uid,title)
4277                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat')");
4278
4279                         db_query($link, "COMMIT");
4280
4281                         return true;
4282                 }
4283
4284                 return false;
4285         }
4286
4287         function remove_feed_category($link, $id, $owner_uid) {
4288
4289                 db_query($link, "DELETE FROM ttrss_feed_categories
4290                         WHERE id = '$id' AND owner_uid = $owner_uid");
4291
4292                 ccache_remove($link, $id, $owner_uid, true);
4293         }
4294
4295         function archive_article($link, $id, $owner_uid) {
4296                 db_query($link, "BEGIN");
4297
4298                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
4299                         WHERE ref_id = '$id' AND owner_uid = $owner_uid");
4300
4301                 if (db_num_rows($result) != 0) {
4302
4303                         /* prepare the archived table */
4304
4305                         $feed_id = (int) db_fetch_result($result, 0, "feed_id");
4306
4307                         if ($feed_id) {
4308                                 $result = db_query($link, "SELECT id FROM ttrss_archived_feeds
4309                                         WHERE id = '$feed_id'");
4310
4311                                 if (db_num_rows($result) == 0) {
4312                                         db_query($link, "INSERT INTO ttrss_archived_feeds
4313                                                 (id, owner_uid, title, feed_url, site_url)
4314                                         SELECT id, owner_uid, title, feed_url, site_url from ttrss_feeds
4315                                         WHERE id = '$feed_id'");
4316                                 }
4317
4318                                 db_query($link, "UPDATE ttrss_user_entries
4319                                         SET orig_feed_id = feed_id, feed_id = NULL
4320                                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
4321                         }
4322                 }
4323
4324                 db_query($link, "COMMIT");
4325         }
4326
4327         function getArticleFeed($link, $id) {
4328                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
4329                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
4330
4331                 if (db_num_rows($result) != 0) {
4332                         return db_fetch_result($result, 0, "feed_id");
4333                 } else {
4334                         return 0;
4335                 }
4336         }
4337
4338         /**
4339          * Fixes incomplete URLs by prepending "http://".
4340          * Also replaces feed:// with http://, and
4341          * prepends a trailing slash if the url is a domain name only.
4342          *
4343          * @param string $url Possibly incomplete URL
4344          *
4345          * @return string Fixed URL.
4346          */
4347         function fix_url($url) {
4348                 if (strpos($url, '://') === false) {
4349                         $url = 'http://' . $url;
4350                 } else if (substr($url, 0, 5) == 'feed:') {
4351                         $url = 'http:' . substr($url, 5);
4352                 }
4353
4354                 //prepend slash if the URL has no slash in it
4355                 // "http://www.example" -> "http://www.example/"
4356                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
4357                         $url .= '/';
4358                 }
4359
4360                 if ($url != "http:///")
4361                         return $url;
4362                 else
4363                         return '';
4364         }
4365
4366         function validate_feed_url($url) {
4367                 $parts = parse_url($url);
4368
4369                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
4370
4371         }
4372
4373         function get_article_enclosures($link, $id) {
4374
4375                 global $memcache;
4376
4377                 $query = "SELECT * FROM ttrss_enclosures
4378                         WHERE post_id = '$id' AND content_url != ''";
4379
4380                 $obj_id = md5("ENCLOSURES:$id");
4381
4382                 $rv = array();
4383
4384                 if ($memcache && $obj = $memcache->get($obj_id)) {
4385                         $rv = $obj;
4386                 } else {
4387                         $result = db_query($link, $query);
4388
4389                         if (db_num_rows($result) > 0) {
4390                                 while ($line = db_fetch_assoc($result)) {
4391                                         array_push($rv, $line);
4392                                 }
4393                                 if ($memcache) $memcache->add($obj_id, $rv, 0, 3600);
4394                         }
4395                 }
4396
4397                 return $rv;
4398         }
4399
4400         function api_get_feeds($link, $cat_id, $unread_only, $limit, $offset) {
4401
4402                         $feeds = array();
4403
4404                         /* Labels */
4405
4406                         if ($cat_id == -4 || $cat_id == -2) {
4407                                 $counters = getLabelCounters($link, true);
4408
4409                                 foreach (array_values($counters) as $cv) {
4410
4411                                         $unread = $cv["counter"];
4412
4413                                         if ($unread || !$unread_only) {
4414
4415                                                 $row = array(
4416                                                                 "id" => $cv["id"],
4417                                                                 "title" => $cv["description"],
4418                                                                 "unread" => $cv["counter"],
4419                                                                 "cat_id" => -2,
4420                                                         );
4421
4422                                                 array_push($feeds, $row);
4423                                         }
4424                                 }
4425                         }
4426
4427                         /* Virtual feeds */
4428
4429                         if ($cat_id == -4 || $cat_id == -1) {
4430                                 foreach (array(-1, -2, -3, -4, 0) as $i) {
4431                                         $unread = getFeedUnread($link, $i);
4432
4433                                         if ($unread || !$unread_only) {
4434                                                 $title = getFeedTitle($link, $i);
4435
4436                                                 $row = array(
4437                                                                 "id" => $i,
4438                                                                 "title" => $title,
4439                                                                 "unread" => $unread,
4440                                                                 "cat_id" => -1,
4441                                                         );
4442                                                 array_push($feeds, $row);
4443                                         }
4444
4445                                 }
4446                         }
4447
4448                         /* Real feeds */
4449
4450                         if ($limit) {
4451                                 $limit_qpart = "LIMIT $limit OFFSET $offset";
4452                         } else {
4453                                 $limit_qpart = "";
4454                         }
4455
4456                         if ($cat_id == -4 || $cat_id == -3) {
4457                                 $result = db_query($link, "SELECT
4458                                         id, feed_url, cat_id, title, order_id, ".
4459                                                 SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
4460                                                 FROM ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"] .
4461                                                 " ORDER BY cat_id, title " . $limit_qpart);
4462                         } else {
4463
4464                                 if ($cat_id)
4465                                         $cat_qpart = "cat_id = '$cat_id'";
4466                                 else
4467                                         $cat_qpart = "cat_id IS NULL";
4468
4469                                 $result = db_query($link, "SELECT
4470                                         id, feed_url, cat_id, title, order_id, ".
4471                                                 SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
4472                                                 FROM ttrss_feeds WHERE
4473                                                 $cat_qpart AND owner_uid = " . $_SESSION["uid"] .
4474                                                 " ORDER BY cat_id, title " . $limit_qpart);
4475                         }
4476
4477                         while ($line = db_fetch_assoc($result)) {
4478
4479                                 $unread = getFeedUnread($link, $line["id"]);
4480
4481                                 $has_icon = feed_has_icon($line['id']);
4482
4483                                 if ($unread || !$unread_only) {
4484
4485                                         $row = array(
4486                                                         "feed_url" => $line["feed_url"],
4487                                                         "title" => $line["title"],
4488                                                         "id" => (int)$line["id"],
4489                                                         "unread" => (int)$unread,
4490                                                         "has_icon" => $has_icon,
4491                                                         "cat_id" => (int)$line["cat_id"],
4492                                                         "last_updated" => strtotime($line["last_updated"]),
4493                                                         "order_id" => (int) $line["order_id"],
4494                                                 );
4495
4496                                         array_push($feeds, $row);
4497                                 }
4498                         }
4499
4500                 return $feeds;
4501         }
4502
4503         function api_get_headlines($link, $feed_id, $limit, $offset,
4504                                 $filter, $is_cat, $show_excerpt, $show_content, $view_mode, $order,
4505                                 $include_attachments, $since_id,
4506                                 $search = "", $search_mode = "", $match_on = "") {
4507
4508                         $qfh_ret = queryFeedHeadlines($link, $feed_id, $limit,
4509                                 $view_mode, $is_cat, $search, $search_mode, $match_on,
4510                                 $order, $offset, 0, false, $since_id);
4511
4512                         $result = $qfh_ret[0];
4513                         $feed_title = $qfh_ret[1];
4514
4515                         $headlines = array();
4516
4517                         while ($line = db_fetch_assoc($result)) {
4518                                 $is_updated = ($line["last_read"] == "" &&
4519                                         ($line["unread"] != "t" && $line["unread"] != "1"));
4520
4521                                 $tags = explode(",", $line["tag_cache"]);
4522                                 $labels = json_decode($line["label_cache"], true);
4523
4524                                 //if (!$tags) $tags = get_article_tags($link, $line["id"]);
4525                                 //if (!$labels) $labels = get_article_labels($link, $line["id"]);
4526
4527                                 $headline_row = array(
4528                                                 "id" => (int)$line["id"],
4529                                                 "unread" => sql_bool_to_bool($line["unread"]),
4530                                                 "marked" => sql_bool_to_bool($line["marked"]),
4531                                                 "published" => sql_bool_to_bool($line["published"]),
4532                                                 "updated" => strtotime($line["updated"]),
4533                                                 "is_updated" => $is_updated,
4534                                                 "title" => $line["title"],
4535                                                 "link" => $line["link"],
4536                                                 "feed_id" => $line["feed_id"],
4537                                                 "tags" => $tags,
4538                                         );
4539
4540                                         if ($include_attachments)
4541                                                 $headline_row['attachments'] = get_article_enclosures($link,
4542                                                         $line['id']);
4543
4544                                 if ($show_excerpt) {
4545                                         $excerpt = truncate_string(strip_tags($line["content_preview"]), 100);
4546                                         $headline_row["excerpt"] = $excerpt;
4547                                 }
4548
4549                                 if ($show_content) {
4550                                         $headline_row["content"] = $line["content_preview"];
4551                                 }
4552
4553                                 // unify label output to ease parsing
4554                                 if ($labels["no-labels"] == 1) $labels = array();
4555
4556                                 $headline_row["labels"] = $labels;
4557
4558                                 $headline_row["feed_title"] = $line["feed_title"];
4559
4560                                 array_push($headlines, $headline_row);
4561                         }
4562
4563                         return $headlines;
4564         }
4565
4566         function generate_error_feed($link, $error) {
4567                 $reply = array();
4568
4569                 $reply['headlines']['id'] = -6;
4570                 $reply['headlines']['is_cat'] = false;
4571
4572                 $reply['headlines']['toolbar'] = '';
4573                 $reply['headlines']['content'] = "<div class='whiteBox'>". $error . "</div>";
4574
4575                 $reply['headlines-info'] = array("count" => 0,
4576                         "vgroup_last_feed" => '',
4577                         "unread" => 0,
4578                         "disable_cache" => true);
4579
4580                 return $reply;
4581         }
4582
4583
4584         function generate_dashboard_feed($link) {
4585                 $reply = array();
4586
4587                 $reply['headlines']['id'] = -5;
4588                 $reply['headlines']['is_cat'] = false;
4589
4590                 $reply['headlines']['toolbar'] = '';
4591                 $reply['headlines']['content'] = "<div class='whiteBox'>".__('No feed selected.');
4592
4593                 $reply['headlines']['content'] .= "<p class=\"small\"><span class=\"insensitive\">";
4594
4595                 $result = db_query($link, "SELECT ".SUBSTRING_FOR_DATE."(MAX(last_updated), 1, 19) AS last_updated FROM ttrss_feeds
4596                         WHERE owner_uid = " . $_SESSION['uid']);
4597
4598                 $last_updated = db_fetch_result($result, 0, "last_updated");
4599                 $last_updated = make_local_datetime($link, $last_updated, false);
4600
4601                 $reply['headlines']['content'] .= sprintf(__("Feeds last updated at %s"), $last_updated);
4602
4603                 $result = db_query($link, "SELECT COUNT(id) AS num_errors
4604                         FROM ttrss_feeds WHERE last_error != '' AND owner_uid = ".$_SESSION["uid"]);
4605
4606                 $num_errors = db_fetch_result($result, 0, "num_errors");
4607
4608                 if ($num_errors > 0) {
4609                         $reply['headlines']['content'] .= "<br/>";
4610                         $reply['headlines']['content'] .= "<a class=\"insensitive\" href=\"#\" onclick=\"showFeedsWithErrors()\">".
4611                                 __('Some feeds have update errors (click for details)')."</a>";
4612                 }
4613                 $reply['headlines']['content'] .= "</span></p>";
4614
4615                 $reply['headlines-info'] = array("count" => 0,
4616                         "vgroup_last_feed" => '',
4617                         "unread" => 0,
4618                         "disable_cache" => true);
4619
4620                 return $reply;
4621         }
4622
4623         function save_email_address($link, $email) {
4624                 // FIXME: implement persistent storage of emails
4625
4626                 if (!$_SESSION['stored_emails'])
4627                         $_SESSION['stored_emails'] = array();
4628
4629                 if (!in_array($email, $_SESSION['stored_emails']))
4630                         array_push($_SESSION['stored_emails'], $email);
4631         }
4632
4633         function update_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
4634                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4635
4636                 $sql_is_cat = bool_to_sql_bool($is_cat);
4637
4638                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
4639                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
4640                         AND owner_uid = " . $owner_uid);
4641
4642                 if (db_num_rows($result) == 1) {
4643                         $key = db_escape_string(sha1(uniqid(rand(), true)));
4644
4645                         db_query($link, "UPDATE ttrss_access_keys SET access_key = '$key'
4646                                 WHERE feed_id = '$feed_id' AND is_cat = $sql_is_cat
4647                                 AND owner_uid = " . $owner_uid);
4648
4649                         return $key;
4650
4651                 } else {
4652                         return get_feed_access_key($link, $feed_id, $is_cat, $owner_uid);
4653                 }
4654         }
4655
4656         function get_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
4657
4658                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4659
4660                 $sql_is_cat = bool_to_sql_bool($is_cat);
4661
4662                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
4663                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
4664                         AND owner_uid = " . $owner_uid);
4665
4666                 if (db_num_rows($result) == 1) {
4667                         return db_fetch_result($result, 0, "access_key");
4668                 } else {
4669                         $key = db_escape_string(sha1(uniqid(rand(), true)));
4670
4671                         $result = db_query($link, "INSERT INTO ttrss_access_keys
4672                                 (access_key, feed_id, is_cat, owner_uid)
4673                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
4674
4675                         return $key;
4676                 }
4677                 return false;
4678         }
4679
4680         /**
4681          * Extracts RSS/Atom feed URLs from the given HTML URL.
4682          *
4683          * @param string $url HTML page URL
4684          *
4685          * @return array Array of feeds. Key is the full URL, value the title
4686          */
4687         function get_feeds_from_html($url, $login = false, $pass = false)
4688         {
4689                 $url     = fix_url($url);
4690                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
4691
4692                 libxml_use_internal_errors(true);
4693
4694                 $content = @fetch_file_contents($url, false, $login, $pass);
4695
4696                 $doc = new DOMDocument();
4697                 $doc->loadHTML($content);
4698                 $xpath = new DOMXPath($doc);
4699                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
4700                 $feedUrls = array();
4701                 foreach ($entries as $entry) {
4702                         if ($entry->hasAttribute('href')) {
4703                                 $title = $entry->getAttribute('title');
4704                                 if ($title == '') {
4705                                         $title = $entry->getAttribute('type');
4706                                 }
4707                                 $feedUrl = rewrite_relative_url(
4708                                         $baseUrl, $entry->getAttribute('href')
4709                                 );
4710                                 $feedUrls[$feedUrl] = $title;
4711                         }
4712                 }
4713                 return $feedUrls;
4714         }
4715
4716         /**
4717          * Checks if the content behind the given URL is a HTML file
4718          *
4719          * @param string $url URL to check
4720          *
4721          * @return boolean True if the URL contains HTML content
4722          */
4723         function url_is_html($url, $login = false, $pass = false) {
4724                 $content = substr(fetch_file_contents($url, false, $login, $pass), 0, 1000);
4725
4726                 if (stripos($content, '<html>') === false
4727                         && stripos($content, '<html ') === false
4728                 ) {
4729                         return false;
4730                 }
4731
4732                 return true;
4733         }
4734
4735         function print_label_select($link, $name, $value, $attributes = "") {
4736
4737                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
4738                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
4739
4740                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
4741                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
4742
4743                 while ($line = db_fetch_assoc($result)) {
4744
4745                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
4746
4747                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
4748                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
4749
4750                 }
4751
4752 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
4753
4754                 print "</select>";
4755
4756
4757         }
4758
4759         function format_article_enclosures($link, $id, $always_display_enclosures,
4760                                         $article_content) {
4761
4762                 $result = get_article_enclosures($link, $id);
4763                 $rv = '';
4764
4765                 if (count($result) > 0) {
4766
4767                         $entries_html = array();
4768                         $entries = array();
4769
4770                         foreach ($result as $line) {
4771
4772                                 $url = $line["content_url"];
4773                                 $ctype = $line["content_type"];
4774
4775                                 if (!$ctype) $ctype = __("unknown type");
4776
4777 #                               $filename = substr($url, strrpos($url, "/")+1);
4778
4779                                 $entry = format_inline_player($link, $url, $ctype);
4780
4781 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
4782 #                                       $filename . " (" . $ctype . ")" . "</a>";
4783
4784                                 array_push($entries_html, $entry);
4785
4786                                 $entry = array();
4787
4788                                 $entry["type"] = $ctype;
4789                                 $entry["filename"] = $filename;
4790                                 $entry["url"] = $url;
4791
4792                                 array_push($entries, $entry);
4793                         }
4794
4795                         $rv .= "<div class=\"postEnclosures\">";
4796
4797                         if (!get_pref($link, "STRIP_IMAGES")) {
4798                                 if ($always_display_enclosures ||
4799                                                         !preg_match("/<img/i", $article_content)) {
4800
4801                                         foreach ($entries as $entry) {
4802
4803                                                 if (preg_match("/image/", $entry["type"]) ||
4804                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
4805
4806                                                                 $rv .= "<p><img
4807                                                                 alt=\"".htmlspecialchars($entry["filename"])."\"
4808                                                                 src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
4809                                                 }
4810                                         }
4811                                 }
4812                         }
4813
4814                         if (count($entries) == 1) {
4815                                 $rv .= __("Attachment:") . " ";
4816                         } else {
4817                                 $rv .= __("Attachments:") . " ";
4818                         }
4819
4820                         $rv .= join(", ", $entries_html);
4821
4822                         $rv .= "</div>";
4823                 }
4824
4825                 return $rv;
4826         }
4827
4828         function getLastArticleId($link) {
4829                 $result = db_query($link, "SELECT MAX(ref_id) AS id FROM ttrss_user_entries
4830                         WHERE owner_uid = " . $_SESSION["uid"]);
4831
4832                 if (db_num_rows($result) == 1) {
4833                         return db_fetch_result($result, 0, "id");
4834                 } else {
4835                         return -1;
4836                 }
4837         }
4838
4839         function build_url($parts) {
4840                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
4841         }
4842
4843         /**
4844          * Converts a (possibly) relative URL to a absolute one.
4845          *
4846          * @param string $url     Base URL (i.e. from where the document is)
4847          * @param string $rel_url Possibly relative URL in the document
4848          *
4849          * @return string Absolute URL
4850          */
4851         function rewrite_relative_url($url, $rel_url) {
4852                 if (strpos($rel_url, "magnet:") === 0) {
4853                         return $rel_url;
4854                 } else if (strpos($rel_url, "://") !== false) {
4855                         return $rel_url;
4856                 } else if (strpos($rel_url, "/") === 0)
4857                 {
4858                         $parts = parse_url($url);
4859                         $parts['path'] = $rel_url;
4860
4861                         return build_url($parts);
4862
4863                 } else {
4864                         $parts = parse_url($url);
4865                         if (!isset($parts['path'])) {
4866                                 $parts['path'] = '/';
4867                         }
4868                         $dir = $parts['path'];
4869                         if (substr($dir, -1) !== '/') {
4870                                 $dir = dirname($parts['path']);
4871                                 $dir !== '/' && $dir .= '/';
4872                         }
4873                         $parts['path'] = $dir . $rel_url;
4874
4875                         return build_url($parts);
4876                 }
4877         }
4878
4879         function sphinx_search($query, $offset = 0, $limit = 30) {
4880                 require_once 'lib/sphinxapi.php';
4881
4882                 $sphinxClient = new SphinxClient();
4883
4884                 $sphinxClient->SetServer('localhost', 9312);
4885                 $sphinxClient->SetConnectTimeout(1);
4886
4887                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
4888                         'feed_title' => 20));
4889
4890                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
4891                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
4892                 $sphinxClient->SetLimits($offset, $limit, 1000);
4893                 $sphinxClient->SetArrayResult(false);
4894                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
4895
4896                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
4897
4898                 $ids = array();
4899
4900                 if (is_array($result['matches'])) {
4901                         foreach (array_keys($result['matches']) as $int_id) {
4902                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
4903                                 array_push($ids, $ref_id);
4904                         }
4905                 }
4906
4907                 return $ids;
4908         }
4909
4910         function cleanup_tags($link, $days = 14, $limit = 1000) {
4911
4912                 if (DB_TYPE == "pgsql") {
4913                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
4914                 } else if (DB_TYPE == "mysql") {
4915                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
4916                 }
4917
4918                 $tags_deleted = 0;
4919
4920                 while ($limit > 0) {
4921                         $limit_part = 500;
4922
4923                         $query = "SELECT ttrss_tags.id AS id
4924                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
4925                                 WHERE post_int_id = int_id AND $interval_query AND
4926                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
4927
4928                         $result = db_query($link, $query);
4929
4930                         $ids = array();
4931
4932                         while ($line = db_fetch_assoc($result)) {
4933                                 array_push($ids, $line['id']);
4934                         }
4935
4936                         if (count($ids) > 0) {
4937                                 $ids = join(",", $ids);
4938                                 print ".";
4939
4940                                 $tmp_result = db_query($link, "DELETE FROM ttrss_tags WHERE id IN ($ids)");
4941                                 $tags_deleted += db_affected_rows($link, $tmp_result);
4942                         } else {
4943                                 break;
4944                         }
4945
4946                         $limit -= $limit_part;
4947                 }
4948
4949                 print "\n";
4950
4951                 return $tags_deleted;
4952         }
4953
4954         function print_user_stylesheet($link) {
4955                 $value = get_pref($link, 'USER_STYLESHEET');
4956
4957                 if ($value) {
4958                         print "<style type=\"text/css\">";
4959                         print str_replace("<br/>", "\n", $value);
4960                         print "</style>";
4961                 }
4962
4963         }
4964
4965 /*      function rewrite_urls($line) {
4966                 global $url_regex;
4967
4968                 $urls = null;
4969
4970                 $result = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
4971                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $line);
4972
4973                 return $result;
4974         } */
4975
4976         function rewrite_urls($html) {
4977                 libxml_use_internal_errors(true);
4978
4979                 $charset_hack = '<head>
4980                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
4981                 </head>';
4982
4983                 $doc = new DOMDocument();
4984                 $doc->loadHTML($charset_hack . $html);
4985                 $xpath = new DOMXPath($doc);
4986
4987                 $entries = $xpath->query('//*/text()');
4988
4989                 foreach ($entries as $entry) {
4990                         if (strstr($entry->wholeText, "://") !== false) {
4991                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
4992                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
4993
4994                                 if ($text != $entry->wholeText) {
4995                                         $cdoc = new DOMDocument();
4996                                         $cdoc->loadHTML($charset_hack . $text);
4997
4998
4999                                         foreach ($cdoc->childNodes as $cnode) {
5000                                                 $cnode = $doc->importNode($cnode, true);
5001
5002                                                 if ($cnode) {
5003                                                         $entry->parentNode->insertBefore($cnode);
5004                                                 }
5005                                         }
5006
5007                                         $entry->parentNode->removeChild($entry);
5008
5009                                 }
5010                         }
5011                 }
5012
5013                 $node = $doc->getElementsByTagName('body')->item(0);
5014
5015                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
5016                 if ($node)
5017                         return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
5018                 else
5019                         return $html;
5020         }
5021
5022         function filter_to_sql($filter) {
5023                 $query = "";
5024
5025                 $regexp_valid = preg_match('/' . $filter['reg_exp'] . '/',
5026                         $filter['reg_exp']) !== FALSE;
5027
5028                 if ($regexp_valid) {
5029
5030                         if (DB_TYPE == "pgsql")
5031                                 $reg_qpart = "~";
5032                         else
5033                                 $reg_qpart = "REGEXP";
5034
5035                         switch ($filter["type"]) {
5036                                 case "title":
5037                                         $query = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
5038                                                 $filter['reg_exp'] . "')";
5039                                         break;
5040                                 case "content":
5041                                         $query = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
5042                                                 $filter['reg_exp'] . "')";
5043                                         break;
5044                                 case "both":
5045                                         $query = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
5046                                                 $filter['reg_exp'] . "') OR LOWER(" .
5047                                                 "ttrss_entries.content) $reg_qpart LOWER('" . $filter['reg_exp'] . "')";
5048                                         break;
5049                                 case "tag":
5050                                         $query = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
5051                                                 $filter['reg_exp'] . "')";
5052                                         break;
5053                                 case "link":
5054                                         $query = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
5055                                                 $filter['reg_exp'] . "')";
5056                                         break;
5057                                 case "date":
5058
5059                                         if ($filter["filter_param"] == "before")
5060                                                 $cmp_qpart = "<";
5061                                         else
5062                                                 $cmp_qpart = ">=";
5063
5064                                         $timestamp = date("Y-m-d H:N:s", strtotime($filter["reg_exp"]));
5065                                         $query = "ttrss_entries.date_entered $cmp_qpart '$timestamp'";
5066                                         break;
5067                                 case "author":
5068                                         $query = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
5069                                                 $filter['reg_exp'] . "')";
5070                                         break;
5071                         }
5072
5073                         if ($filter["inverse"])
5074                                 $query = "NOT ($query)";
5075
5076                         if ($query) {
5077                                 if (DB_TYPE == "pgsql") {
5078                                         $query = " ($query) AND ttrss_entries.date_entered > NOW() - INTERVAL '14 days'";
5079                                 } else {
5080                                         $query = " ($query) AND ttrss_entries.date_entered > DATE_SUB(NOW(), INTERVAL 14 DAY)";
5081                                 }
5082                                 $query .= " AND ";
5083                         }
5084
5085                         return $query;
5086                 } else {
5087                         return false;
5088                 }
5089         }
5090
5091         // Status codes:
5092         // -1  - never connected
5093         // 0   - no data received
5094         // 1   - data received successfully
5095         // 2   - did not receive valid data
5096         // >10 - server error, code + 10 (e.g. 16 means server error 6)
5097
5098         function get_linked_feeds($link, $instance_id = false) {
5099                 if ($instance_id)
5100                         $instance_qpart = "id = '$instance_id' AND ";
5101                 else
5102                         $instance_qpart = "";
5103
5104                 if (DB_TYPE == "pgsql") {
5105                         $date_qpart = "last_connected < NOW() - INTERVAL '6 hours'";
5106                 } else {
5107                         $date_qpart = "last_connected < DATE_SUB(NOW(), INTERVAL 6 HOUR)";
5108                 }
5109
5110                 $result = db_query($link, "SELECT id, access_key, access_url FROM ttrss_linked_instances
5111                         WHERE $instance_qpart $date_qpart ORDER BY last_connected");
5112
5113                 while ($line = db_fetch_assoc($result)) {
5114                         $id = $line['id'];
5115
5116                         _debug("Updating: " . $line['access_url'] . " ($id)");
5117
5118                         $fetch_url = $line['access_url'] . '/public.php?op=fbexport';
5119                         $post_query = 'key=' . $line['access_key'];
5120
5121                         $feeds = fetch_file_contents($fetch_url, false, false, false, $post_query);
5122
5123                         // try doing it the old way
5124                         if (!$feeds) {
5125                                 $fetch_url = $line['access_url'] . '/backend.php?op=fbexport';
5126                                 $feeds = fetch_file_contents($fetch_url, false, false, false, $post_query);
5127                         }
5128
5129                         if ($feeds) {
5130                                 $feeds = json_decode($feeds, true);
5131
5132                                 if ($feeds) {
5133                                         if ($feeds['error']) {
5134                                                 $status = $feeds['error']['code'] + 10;
5135                                         } else {
5136                                                 $status = 1;
5137
5138                                                 if (count($feeds['feeds']) > 0) {
5139
5140                                                         db_query($link, "DELETE FROM ttrss_linked_feeds
5141                                                                 WHERE instance_id = '$id'");
5142
5143                                                         foreach ($feeds['feeds'] as $feed) {
5144                                                                 $feed_url = db_escape_string($feed['feed_url']);
5145                                                                 $title = db_escape_string($feed['title']);
5146                                                                 $subscribers = db_escape_string($feed['subscribers']);
5147                                                                 $site_url = db_escape_string($feed['site_url']);
5148
5149                                                                 db_query($link, "INSERT INTO ttrss_linked_feeds
5150                                                                         (feed_url, site_url, title, subscribers, instance_id, created, updated)
5151                                                                 VALUES
5152                                                                         ('$feed_url', '$site_url', '$title', '$subscribers', '$id', NOW(), NOW())");
5153                                                         }
5154                                                 } else {
5155                                                         // received 0 feeds, this might indicate that
5156                                                         // the instance on the other hand is rebuilding feedbrowser cache
5157                                                         // we will try again later
5158
5159                                                         // TODO: maybe perform expiration based on updated here?
5160                                                 }
5161
5162                                                 _debug("Processed " . count($feeds['feeds']) . " feeds.");
5163                                         }
5164                                 } else {
5165                                         $status = 2;
5166                                 }
5167
5168                         } else {
5169                                 $status = 0;
5170                         }
5171
5172                         _debug("Status: $status");
5173
5174                         db_query($link, "UPDATE ttrss_linked_instances SET
5175                                 last_status_out = '$status', last_connected = NOW() WHERE id = '$id'");
5176
5177                 }
5178         }
5179
5180         function make_feed_browser($link, $search, $limit, $mode = 1) {
5181
5182                 $owner_uid = $_SESSION["uid"];
5183                 $rv = '';
5184
5185                 if ($search) {
5186                         $search_qpart = "AND (UPPER(feed_url) LIKE UPPER('%$search%') OR
5187                                                 UPPER(title) LIKE UPPER('%$search%'))";
5188                 } else {
5189                         $search_qpart = "";
5190                 }
5191
5192                 if ($mode == 1) {
5193                         /* $result = db_query($link, "SELECT feed_url, subscribers FROM
5194                          ttrss_feedbrowser_cache WHERE (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
5195                         WHERE tf.feed_url = ttrss_feedbrowser_cache.feed_url
5196                         AND owner_uid = '$owner_uid') $search_qpart
5197                         ORDER BY subscribers DESC LIMIT $limit"); */
5198
5199                         $result = db_query($link, "SELECT feed_url, site_url, title, SUM(subscribers) AS subscribers FROM
5200                                                 (SELECT feed_url, site_url, title, subscribers FROM ttrss_feedbrowser_cache UNION ALL
5201                                                         SELECT feed_url, site_url, title, subscribers FROM ttrss_linked_feeds) AS qqq
5202                                                 WHERE
5203                                                         (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
5204                                                                 WHERE tf.feed_url = qqq.feed_url
5205                                                                         AND owner_uid = '$owner_uid') $search_qpart
5206                                                 GROUP BY feed_url, site_url, title ORDER BY subscribers DESC LIMIT $limit");
5207
5208                 } else if ($mode == 2) {
5209                         $result = db_query($link, "SELECT *,
5210                                                 (SELECT COUNT(*) FROM ttrss_user_entries WHERE
5211                                                         orig_feed_id = ttrss_archived_feeds.id) AS articles_archived
5212                                                 FROM
5213                                                         ttrss_archived_feeds
5214                                                 WHERE
5215                                                 (SELECT COUNT(*) FROM ttrss_feeds
5216                                                         WHERE ttrss_feeds.feed_url = ttrss_archived_feeds.feed_url AND
5217                                                                 owner_uid = '$owner_uid') = 0   AND
5218                                                 owner_uid = '$owner_uid' $search_qpart
5219                                                 ORDER BY id DESC LIMIT $limit");
5220                 }
5221
5222                 $feedctr = 0;
5223
5224                 while ($line = db_fetch_assoc($result)) {
5225
5226                         if ($mode == 1) {
5227
5228                                 $feed_url = htmlspecialchars($line["feed_url"]);
5229                                 $site_url = htmlspecialchars($line["site_url"]);
5230                                 $subscribers = $line["subscribers"];
5231
5232                                 $check_box = "<input onclick='toggleSelectListRow2(this)'
5233                                                         dojoType=\"dijit.form.CheckBox\"
5234                                                         type=\"checkbox\" \">";
5235
5236                                 $class = ($feedctr % 2) ? "even" : "odd";
5237
5238                                 $site_url = "<a target=\"_blank\"
5239                                                         href=\"$site_url\">
5240                                                         <span class=\"fb_feedTitle\">".
5241                                 htmlspecialchars($line["title"])."</span></a>";
5242
5243                                 $feed_url = "<a target=\"_blank\" class=\"fb_feedUrl\"
5244                                                         href=\"$feed_url\"><img src='images/feed-icon-12x12.png'
5245                                                         style='vertical-align : middle'></a>";
5246
5247                                 $rv .= "<li>$check_box $feed_url $site_url".
5248                                                         "&nbsp;<span class='subscribers'>($subscribers)</span></li>";
5249
5250                         } else if ($mode == 2) {
5251                                 $feed_url = htmlspecialchars($line["feed_url"]);
5252                                 $site_url = htmlspecialchars($line["site_url"]);
5253                                 $title = htmlspecialchars($line["title"]);
5254
5255                                 $check_box = "<input onclick='toggleSelectListRow2(this)' dojoType=\"dijit.form.CheckBox\"
5256                                                         type=\"checkbox\">";
5257
5258                                 $class = ($feedctr % 2) ? "even" : "odd";
5259
5260                                 if ($line['articles_archived'] > 0) {
5261                                         $archived = sprintf(__("%d archived articles"), $line['articles_archived']);
5262                                         $archived = "&nbsp;<span class='subscribers'>($archived)</span>";
5263                                 } else {
5264                                         $archived = '';
5265                                 }
5266
5267                                 $site_url = "<a target=\"_blank\"
5268                                                         href=\"$site_url\">
5269                                                         <span class=\"fb_feedTitle\">".
5270                                 htmlspecialchars($line["title"])."</span></a>";
5271
5272                                 $feed_url = "<a target=\"_blank\" class=\"fb_feedUrl\"
5273                                                         href=\"$feed_url\"><img src='images/feed-icon-12x12.png'
5274                                                         style='vertical-align : middle'></a>";
5275
5276
5277                                 $rv .= "<li id=\"FBROW-".$line["id"]."\">".
5278                                                         "$check_box $feed_url $site_url $archived</li>";
5279                         }
5280
5281                         ++$feedctr;
5282                 }
5283
5284                 if ($feedctr == 0) {
5285                         $rv .= "<li style=\"text-align : center\"><p>".__('No feeds found.')."</p></li>";
5286                 }
5287
5288                 return $rv;
5289         }
5290
5291         if (!function_exists('gzdecode')) {
5292                 function gzdecode($string) { // no support for 2nd argument
5293                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
5294                                 base64_encode($string));
5295                 }
5296         }
5297
5298         function perform_data_import($link, $filename, $owner_uid) {
5299
5300                 $num_imported = 0;
5301                 $num_processed = 0;
5302                 $num_feeds_created = 0;
5303
5304                 $doc = @DOMDocument::load($filename);
5305
5306                 if (!$doc) {
5307                         $contents = file_get_contents($filename);
5308
5309                         if ($contents) {
5310                                 $data = @gzuncompress($contents);
5311                         }
5312
5313                         if (!$data) {
5314                                 $data = @gzdecode($contents);
5315                         }
5316
5317                         if ($data)
5318                                 $doc = DOMDocument::loadXML($data);
5319                 }
5320
5321                 if ($doc) {
5322
5323                         $xpath = new DOMXpath($doc);
5324
5325                         $container = $doc->firstChild;
5326
5327                         if ($container && $container->hasAttribute('schema-version')) {
5328                                 $schema_version = $container->getAttribute('schema-version');
5329
5330                                 if ($schema_version != SCHEMA_VERSION) {
5331                                         print "<p>" .__("Could not import: incorrect schema version.") . "</p>";
5332                                         return;
5333                                 }
5334
5335                         } else {
5336                                 print "<p>" . __("Could not import: unrecognized document format.") . "</p>";
5337                                 return;
5338                         }
5339
5340                         $articles = $xpath->query("//article");
5341
5342                         foreach ($articles as $article_node) {
5343                                 if ($article_node->childNodes) {
5344
5345                                         $ref_id = 0;
5346
5347                                         $article = array();
5348
5349                                         foreach ($article_node->childNodes as $child) {
5350                                                 if ($child->nodeName != 'label_cache')
5351                                                         $article[$child->nodeName] = db_escape_string($child->nodeValue);
5352                                                 else
5353                                                         $article[$child->nodeName] = $child->nodeValue;
5354                                         }
5355
5356                                         //print_r($article);
5357
5358                                         if ($article['guid']) {
5359
5360                                                 ++$num_processed;
5361
5362                                                 //db_query($link, "BEGIN");
5363
5364                                                 //print 'GUID:' . $article['guid'] . "\n";
5365
5366                                                 $result = db_query($link, "SELECT id FROM ttrss_entries
5367                                                         WHERE guid = '".$article['guid']."'");
5368
5369                                                 if (db_num_rows($result) == 0) {
5370
5371                                                         $result = db_query($link,
5372                                                                 "INSERT INTO ttrss_entries
5373                                                                         (title,
5374                                                                         guid,
5375                                                                         link,
5376                                                                         updated,
5377                                                                         content,
5378                                                                         content_hash,
5379                                                                         no_orig_date,
5380                                                                         date_updated,
5381                                                                         date_entered,
5382                                                                         comments,
5383                                                                         num_comments,
5384                                                                         author)
5385                                                                 VALUES
5386                                                                         ('".$article['title']."',
5387                                                                         '".$article['guid']."',
5388                                                                         '".$article['link']."',
5389                                                                         '".$article['updated']."',
5390                                                                         '".$article['content']."',
5391                                                                         '".sha1($article['content'])."',
5392                                                                         false,
5393                                                                         NOW(),
5394                                                                         NOW(),
5395                                                                         '',
5396                                                                         '0',
5397                                                                         '')");
5398
5399                                                         $result = db_query($link, "SELECT id FROM ttrss_entries
5400                                                                 WHERE guid = '".$article['guid']."'");
5401
5402                                                         if (db_num_rows($result) != 0) {
5403                                                                 $ref_id = db_fetch_result($result, 0, "id");
5404                                                         }
5405
5406                                                 } else {
5407                                                         $ref_id = db_fetch_result($result, 0, "id");
5408                                                 }
5409
5410                                                 //print "Got ref ID: $ref_id\n";
5411
5412                                                 if ($ref_id) {
5413
5414                                                         $feed_url = $article['feed_url'];
5415                                                         $feed_title = $article['feed_title'];
5416
5417                                                         $feed = 'NULL';
5418
5419                                                         if ($feed_url && $feed_title) {
5420                                                                 $result = db_query($link, "SELECT id FROM ttrss_feeds
5421                                                                         WHERE feed_url = '$feed_url' AND owner_uid = '$owner_uid'");
5422
5423                                                                 if (db_num_rows($result) != 0) {
5424                                                                         $feed = db_fetch_result($result, 0, "id");
5425                                                                 } else {
5426                                                                         // try autocreating feed in Uncategorized...
5427
5428                                                                         $result = db_query($link, "INSERT INTO ttrss_feeds (owner_uid,
5429                                                                                 feed_url, title) VALUES ($owner_uid, '$feed_url', '$feed_title')");
5430
5431                                                                         $result = db_query($link, "SELECT id FROM ttrss_feeds
5432                                                                                 WHERE feed_url = '$feed_url' AND owner_uid = '$owner_uid'");
5433
5434                                                                         if (db_num_rows($result) != 0) {
5435                                                                                 ++$num_feeds_created;
5436
5437                                                                                 $feed = db_fetch_result($result, 0, "id");
5438                                                                         }
5439                                                                 }
5440                                                         }
5441
5442                                                         if ($feed != 'NULL')
5443                                                                 $feed_qpart = "feed_id = $feed";
5444                                                         else
5445                                                                 $feed_qpart = "feed_id IS NULL";
5446
5447                                                         //print "$ref_id / $feed / " . $article['title'] . "\n";
5448
5449                                                         $result = db_query($link, "SELECT int_id FROM ttrss_user_entries
5450                                                                 WHERE ref_id = '$ref_id' AND owner_uid = '$owner_uid' AND $feed_qpart");
5451
5452                                                         if (db_num_rows($result) == 0) {
5453
5454                                                                 $marked = bool_to_sql_bool(sql_bool_to_bool($article['marked']));
5455                                                                 $published = bool_to_sql_bool(sql_bool_to_bool($article['published']));
5456                                                                 $score = (int) $article['score'];
5457
5458                                                                 $tag_cache = $article['tag_cache'];
5459                                                                 $label_cache = db_escape_string($article['label_cache']);
5460                                                                 $note = $article['note'];
5461
5462                                                                 //print "Importing " . $article['title'] . "<br/>";
5463
5464                                                                 ++$num_imported;
5465
5466                                                                 $result = db_query($link,
5467                                                                         "INSERT INTO ttrss_user_entries
5468                                                                         (ref_id, owner_uid, feed_id, unread, last_read, marked,
5469                                                                                 published, score, tag_cache, label_cache, uuid, note)
5470                                                                         VALUES ($ref_id, $owner_uid, $feed, false,
5471                                                                                 NULL, $marked, $published, $score, '$tag_cache',
5472                                                                                         '$label_cache', '', '$note')");
5473
5474                                                                 $label_cache = json_decode($label_cache, true);
5475
5476                                                                 if (is_array($label_cache) && $label_cache["no-labels"] != 1) {
5477                                                                         foreach ($label_cache as $label) {
5478
5479                                                                                 label_create($link, $label[1],
5480                                                                                         $label[2], $label[3], $owner_uid);
5481
5482                                                                                 label_add_article($link, $ref_id, $label[1], $owner_uid);
5483
5484                                                                         }
5485                                                                 }
5486
5487                                                                 //db_query($link, "COMMIT");
5488                                                         }
5489                                                 }
5490                                         }
5491                                 }
5492                         }
5493
5494                         print "<p>" .
5495                                 T_sprintf("Finished: %d articles processed, %d imported, %d feeds created.",
5496                                         $num_processed, $num_imported, $num_feeds_created) .
5497                                         "</p>";
5498
5499                 } else {
5500
5501                         print "<p>" . __("Could not load XML document.") . "</p>";
5502
5503                 }
5504         }
5505
5506         function get_random_bytes($length) {
5507                 if (function_exists('openssl_random_pseudo_bytes')) {
5508                         return openssl_random_pseudo_bytes($length);
5509                 } else {
5510                         $output = "";
5511
5512                         for ($i = 0; $i < $length; $i++)
5513                                 $output .= chr(mt_rand(0, 255));
5514
5515                         return $output;
5516                 }
5517         }
5518 ?>