include/functions.php

   1 <?php
   2         define('EXPECTED_CONFIG_VERSION', 26);
   3         define('SCHEMA_VERSION', 99);
   4
   5         $fetch_last_error = false;
   6
   7         function __autoload($class) {
   8                 $class_file = str_replace("_", "/", strtolower(basename($class)));
   9
  10                 $file = dirname(__FILE__)."/../classes/$class_file.php";
  11
  12                 if (file_exists($file)) {
  13                         require $file;
  14                 }
  15
  16         }
  17
  18         mb_internal_encoding("UTF-8");
  19         date_default_timezone_set('UTC');
  20         if (defined('E_DEPRECATED')) {
  21                 error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
  22         } else {
  23                 error_reporting(E_ALL & ~E_NOTICE);
  24         }
  25
  26         require_once 'config.php';
  27
  28         if (DB_TYPE == "pgsql") {
  29                 define('SUBSTRING_FOR_DATE', 'SUBSTRING_FOR_DATE');
  30         } else {
  31                 define('SUBSTRING_FOR_DATE', 'SUBSTRING');
  32         }
  33
  34         define('THEME_VERSION_REQUIRED', 1.1);
  35
  36         /**
  37          * Return available translations names.
  38          *
  39          * @access public
  40          * @return array A array of available translations.
  41          */
  42         function get_translations() {
  43                 $tr = array(
  44                                         "auto"  => "Detect automatically",
  45                                         "ca_CA" => "Català",
  46                                         "en_US" => "English",
  47                                         "es_ES" => "Español",
  48                                         "de_DE" => "Deutsch",
  49                                         "fr_FR" => "Français",
  50                                         "hu_HU" => "Magyar (Hungarian)",
  51                                         "it_IT" => "Italiano",
  52                                         "ja_JP" => "日本語 (Japanese)",
  53                                         "nb_NO" => "Norwegian bokmål",
  54                                         "pl_PL" => "Polski",
  55                                         "ru_RU" => "Русский",
  56                                         "pt_BR" => "Portuguese/Brazil",
  57                                         "zh_CN" => "Simplified Chinese");
  58
  59                 return $tr;
  60         }
  61
  62         require_once "lib/accept-to-gettext.php";
  63         require_once "lib/gettext/gettext.inc";
  64
  65         function startup_gettext() {
  66
  67                 # Get locale from Accept-Language header
  68                 $lang = al2gt(array_keys(get_translations()), "text/html");
  69
  70                 if (defined('_TRANSLATION_OVERRIDE_DEFAULT')) {
  71                         $lang = _TRANSLATION_OVERRIDE_DEFAULT;
  72                 }
  73
  74                 /* In login action of mobile version */
  75                 if ($_POST["language"] && defined('MOBILE_VERSION')) {
  76                         $lang = $_POST["language"];
  77                 } else {
  78                         $lang = $_SESSION["language"];
  79                 }
  80
  81                 if ($lang) {
  82                         if (defined('LC_MESSAGES')) {
  83                                 _setlocale(LC_MESSAGES, $lang);
  84                         } else if (defined('LC_ALL')) {
  85                                 _setlocale(LC_ALL, $lang);
  86                         }
  87
  88                         if (defined('MOBILE_VERSION')) {
  89                                 _bindtextdomain("messages", "../locale");
  90                         } else {
  91                                 _bindtextdomain("messages", "locale");
  92                         }
  93
  94                         _textdomain("messages");
  95                         _bind_textdomain_codeset("messages", "UTF-8");
  96                 }
  97         }
  98
  99         startup_gettext();
 100
 101         require_once 'db-prefs.php';
 102         require_once 'version.php';
 103
 104         define('MAGPIE_OUTPUT_ENCODING', 'UTF-8');
 105
 106         define('SELF_USER_AGENT', 'Tiny Tiny RSS/' . VERSION . ' (http://tt-rss.org/)');
 107         define('MAGPIE_USER_AGENT', SELF_USER_AGENT);
 108
 109         ini_set('user_agent', SELF_USER_AGENT);
 110
 111         require_once 'lib/pubsubhubbub/publisher.php';
 112         require_once 'lib/htmLawed.php';
 113
 114         $tz_offset = -1;
 115         $utc_tz = new DateTimeZone('UTC');
 116         $schema_version = false;
 117
 118         /**
 119          * Print a timestamped debug message.
 120          *
 121          * @param string $msg The debug message.
 122          * @return void
 123          */
 124         function _debug($msg) {
 125                 if (defined('QUIET') && QUIET) {
 126                         return;
 127                 }
 128                 $ts = strftime("%H:%M:%S", time());
 129                 if (function_exists('posix_getpid')) {
 130                         $ts = "$ts/" . posix_getpid();
 131                 }
 132                 print "[$ts] $msg\n";
 133         } // function _debug
 134
 135         /**
 136          * Purge a feed old posts.
 137          *
 138          * @param mixed $link A database connection.
 139          * @param mixed $feed_id The id of the purged feed.
 140          * @param mixed $purge_interval Olderness of purged posts.
 141          * @param boolean $debug Set to True to enable the debug. False by default.
 142          * @access public
 143          * @return void
 144          */
 145         function purge_feed($link, $feed_id, $purge_interval, $debug = false) {
 146
 147                 if (!$purge_interval) $purge_interval = feed_purge_interval($link, $feed_id);
 148
 149                 $rows = -1;
 150
 151                 $result = db_query($link,
 152                         "SELECT owner_uid FROM ttrss_feeds WHERE id = '$feed_id'");
 153
 154                 $owner_uid = false;
 155
 156                 if (db_num_rows($result) == 1) {
 157                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 158                 }
 159
 160                 if ($purge_interval == -1 || !$purge_interval) {
 161                         if ($owner_uid) {
 162                                 ccache_update($link, $feed_id, $owner_uid);
 163                         }
 164                         return;
 165                 }
 166
 167                 if (!$owner_uid) return;
 168
 169                 if (FORCE_ARTICLE_PURGE == 0) {
 170                         $purge_unread = get_pref($link, "PURGE_UNREAD_ARTICLES",
 171                                 $owner_uid, false);
 172                 } else {
 173                         $purge_unread = true;
 174                         $purge_interval = FORCE_ARTICLE_PURGE;
 175                 }
 176
 177                 if (!$purge_unread) $query_limit = " unread = false AND ";
 178
 179                 if (DB_TYPE == "pgsql") {
 180                         $pg_version = get_pgsql_version($link);
 181
 182                         if (preg_match("/^7\./", $pg_version) || preg_match("/^8\.0/", $pg_version)) {
 183
 184                                 $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 185                                         ttrss_entries.id = ref_id AND
 186                                         marked = false AND
 187                                         feed_id = '$feed_id' AND
 188                                         $query_limit
 189                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 190
 191                         } else {
 192
 193                                 $result = db_query($link, "DELETE FROM ttrss_user_entries
 194                                         USING ttrss_entries
 195                                         WHERE ttrss_entries.id = ref_id AND
 196                                         marked = false AND
 197                                         feed_id = '$feed_id' AND
 198                                         $query_limit
 199                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 200                         }
 201
 202                         $rows = pg_affected_rows($result);
 203
 204                 } else {
 205
 206 /*                      $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 207                                 marked = false AND feed_id = '$feed_id' AND
 208                                 (SELECT date_updated FROM ttrss_entries WHERE
 209                                         id = ref_id) < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)"); */
 210
 211                         $result = db_query($link, "DELETE FROM ttrss_user_entries
 212                                 USING ttrss_user_entries, ttrss_entries
 213                                 WHERE ttrss_entries.id = ref_id AND
 214                                 marked = false AND
 215                                 feed_id = '$feed_id' AND
 216                                 $query_limit
 217                                 ttrss_entries.date_updated < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)");
 218
 219                         $rows = mysql_affected_rows($link);
 220
 221                 }
 222
 223                 ccache_update($link, $feed_id, $owner_uid);
 224
 225                 if ($debug) {
 226                         _debug("Purged feed $feed_id ($purge_interval): deleted $rows articles");
 227                 }
 228         } // function purge_feed
 229
 230         function feed_purge_interval($link, $feed_id) {
 231
 232                 $result = db_query($link, "SELECT purge_interval, owner_uid FROM ttrss_feeds
 233                         WHERE id = '$feed_id'");
 234
 235                 if (db_num_rows($result) == 1) {
 236                         $purge_interval = db_fetch_result($result, 0, "purge_interval");
 237                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 238
 239                         if ($purge_interval == 0) $purge_interval = get_pref($link,
 240                                 'PURGE_OLD_DAYS', $owner_uid);
 241
 242                         return $purge_interval;
 243
 244                 } else {
 245                         return -1;
 246                 }
 247         }
 248
 249         function purge_orphans($link, $do_output = false) {
 250
 251                 // purge orphaned posts in main content table
 252                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
 253                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
 254
 255                 if ($do_output) {
 256                         $rows = db_affected_rows($link, $result);
 257                         _debug("Purged $rows orphaned posts.");
 258                 }
 259         }
 260
 261         function get_feed_update_interval($link, $feed_id) {
 262                 $result = db_query($link, "SELECT owner_uid, update_interval FROM
 263                         ttrss_feeds WHERE id = '$feed_id'");
 264
 265                 if (db_num_rows($result) == 1) {
 266                         $update_interval = db_fetch_result($result, 0, "update_interval");
 267                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 268
 269                         if ($update_interval != 0) {
 270                                 return $update_interval;
 271                         } else {
 272                                 return get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $owner_uid, false);
 273                         }
 274
 275                 } else {
 276                         return -1;
 277                 }
 278         }
 279
 280         function fetch_file_contents($url, $type = false, $login = false, $pass = false, $post_query = false) {
 281                 $login = urlencode($login);
 282                 $pass = urlencode($pass);
 283
 284                 global $fetch_last_error;
 285
 286                 if (function_exists('curl_init') && !ini_get("open_basedir")) {
 287                         $ch = curl_init($url);
 288
 289                         curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 15);
 290                         curl_setopt($ch, CURLOPT_TIMEOUT, 45);
 291                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
 292                         curl_setopt($ch, CURLOPT_MAXREDIRS, 20);
 293                         curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
 294                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 295                         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 296                         curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 297                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 298                         curl_setopt($ch, CURLOPT_ENCODING , "gzip");
 299
 300                         if ($post_query) {
 301                                 curl_setopt($ch, CURLOPT_POST, true);
 302                                 curl_setopt($ch, CURLOPT_POSTFIELDS, $post_query);
 303                         }
 304
 305                         if ($login && $pass)
 306                                 curl_setopt($ch, CURLOPT_USERPWD, "$login:$pass");
 307
 308                         $contents = @curl_exec($ch);
 309
 310                         if ($contents === false) {
 311                                 $fetch_last_error = curl_error($ch);
 312                                 curl_close($ch);
 313                                 return false;
 314                         }
 315
 316                         $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 317                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 318                         curl_close($ch);
 319
 320                         if ($http_code != 200 || $type && strpos($content_type, "$type") === false) {
 321                                 return false;
 322                         }
 323
 324                         return $contents;
 325                 } else {
 326                         if ($login && $pass ){
 327                                 $url_parts = array();
 328
 329                                 preg_match("/(^[^:]*):\/\/(.*)/", $url, $url_parts);
 330
 331                                 if ($url_parts[1] && $url_parts[2]) {
 332                                         $url = $url_parts[1] . "://$login:$pass@" . $url_parts[2];
 333                                 }
 334                         }
 335
 336                         $data = @file_get_contents($url);
 337
 338                         if (!$data && function_exists('error_get_last')) {
 339                                 $error = error_get_last();
 340                                 $fetch_last_error = $error["message"];
 341                         }
 342                         return $data;
 343                 }
 344
 345         }
 346
 347         /**
 348          * Try to determine the favicon URL for a feed.
 349          * adapted from wordpress favicon plugin by Jeff Minard (http://thecodepro.com/)
 350          * http://dev.wp-plugins.org/file/favatars/trunk/favatars.php
 351          *
 352          * @param string $url A feed or page URL
 353          * @access public
 354          * @return mixed The favicon URL, or false if none was found.
 355          */
 356         function get_favicon_url($url) {
 357
 358                 $favicon_url = false;
 359
 360                 if ($html = @fetch_file_contents($url)) {
 361
 362                         libxml_use_internal_errors(true);
 363
 364                         $doc = new DOMDocument();
 365                         $doc->loadHTML($html);
 366                         $xpath = new DOMXPath($doc);
 367
 368                         $base = $xpath->query('/html/head/base');
 369                         foreach ($base as $b) {
 370                                 $url = $b->getAttribute("href");
 371                                 break;
 372                         }
 373
 374                         $entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon"]');
 375                         if (count($entries) > 0) {
 376                                 foreach ($entries as $entry) {
 377                                         $favicon_url = rewrite_relative_url($url, $entry->getAttribute("href"));
 378                                         break;
 379                                 }
 380                         }
 381                 }
 382
 383                 if (!$favicon_url)
 384                         $favicon_url = rewrite_relative_url($url, "/favicon.ico");
 385
 386                 return $favicon_url;
 387         } // function get_favicon_url
 388
 389         function check_feed_favicon($site_url, $feed, $link) {
 390 #               print "FAVICON [$site_url]: $favicon_url\n";
 391
 392                 $icon_file = ICONS_DIR . "/$feed.ico";
 393
 394                 if (!file_exists($icon_file)) {
 395                         $favicon_url = get_favicon_url($site_url);
 396
 397                         if ($favicon_url) {
 398                                 // Limiting to "image" type misses those served with text/plain
 399                                 $contents = fetch_file_contents($favicon_url); // , "image");
 400
 401                                 if ($contents) {
 402                                         // Crude image type matching.
 403                                         // Patterns gleaned from the file(1) source code.
 404                                         if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
 405                                                 // 0       string  \000\000\001\000        MS Windows icon resource
 406                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
 407                                         }
 408                                         elseif (preg_match('/^GIF8/', $contents)) {
 409                                                 // 0       string          GIF8            GIF image data
 410                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
 411                                         }
 412                                         elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
 413                                                 // 0       string          \x89PNG\x0d\x0a\x1a\x0a         PNG image data
 414                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
 415                                         }
 416                                         elseif (preg_match('/^\xff\xd8/', $contents)) {
 417                                                 // 0       beshort         0xffd8          JPEG image data
 418                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
 419                                         }
 420                                         else {
 421                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
 422                                                 $contents = "";
 423                                         }
 424                                 }
 425
 426                                 if ($contents) {
 427                                         $fp = @fopen($icon_file, "w");
 428
 429                                         if ($fp) {
 430                                                 fwrite($fp, $contents);
 431                                                 fclose($fp);
 432                                                 chmod($icon_file, 0644);
 433                                         }
 434                                 }
 435                         }
 436                 }
 437         }
 438
 439         function print_select($id, $default, $values, $attributes = "") {
 440                 print "<select name=\"$id\" id=\"$id\" $attributes>";
 441                 foreach ($values as $v) {
 442                         if ($v == $default)
 443                                 $sel = "selected=\"1\"";
 444                          else
 445                                 $sel = "";
 446
 447                         print "<option value=\"$v\" $sel>$v</option>";
 448                 }
 449                 print "</select>";
 450         }
 451
 452         function print_select_hash($id, $default, $values, $attributes = "") {
 453                 print "<select name=\"$id\" id='$id' $attributes>";
 454                 foreach (array_keys($values) as $v) {
 455                         if ($v == $default)
 456                                 $sel = 'selected="selected"';
 457                          else
 458                                 $sel = "";
 459
 460                         print "<option $sel value=\"$v\">".$values[$v]."</option>";
 461                 }
 462
 463                 print "</select>";
 464         }
 465
 466         function getmicrotime() {
 467                 list($usec, $sec) = explode(" ",microtime());
 468                 return ((float)$usec + (float)$sec);
 469         }
 470
 471         function print_radio($id, $default, $true_is, $values, $attributes = "") {
 472                 foreach ($values as $v) {
 473
 474                         if ($v == $default)
 475                                 $sel = "checked";
 476                          else
 477                                 $sel = "";
 478
 479                         if ($v == $true_is) {
 480                                 $sel .= " value=\"1\"";
 481                         } else {
 482                                 $sel .= " value=\"0\"";
 483                         }
 484
 485                         print "<input class=\"noborder\" dojoType=\"dijit.form.RadioButton\"
 486                                 type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 487
 488                 }
 489         }
 490
 491         function initialize_user_prefs($link, $uid, $profile = false) {
 492
 493                 $uid = db_escape_string($uid);
 494
 495                 if (!$profile) {
 496                         $profile = "NULL";
 497                         $profile_qpart = "AND profile IS NULL";
 498                 } else {
 499                         $profile_qpart = "AND profile = '$profile'";
 500                 }
 501
 502                 if (get_schema_version($link) < 63) $profile_qpart = "";
 503
 504                 db_query($link, "BEGIN");
 505
 506                 $result = db_query($link, "SELECT pref_name,def_value FROM ttrss_prefs");
 507
 508                 $u_result = db_query($link, "SELECT pref_name
 509                         FROM ttrss_user_prefs WHERE owner_uid = '$uid' $profile_qpart");
 510
 511                 $active_prefs = array();
 512
 513                 while ($line = db_fetch_assoc($u_result)) {
 514                         array_push($active_prefs, $line["pref_name"]);
 515                 }
 516
 517                 while ($line = db_fetch_assoc($result)) {
 518                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 519 //                              print "adding " . $line["pref_name"] . "<br>";
 520
 521                                 if (get_schema_version($link) < 63) {
 522                                         db_query($link, "INSERT INTO ttrss_user_prefs
 523                                                 (owner_uid,pref_name,value) VALUES
 524                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 525
 526                                 } else {
 527                                         db_query($link, "INSERT INTO ttrss_user_prefs
 528                                                 (owner_uid,pref_name,value, profile) VALUES
 529                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."', $profile)");
 530                                 }
 531
 532                         }
 533                 }
 534
 535                 db_query($link, "COMMIT");
 536
 537         }
 538
 539         function get_ssl_certificate_id() {
 540                 if ($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"]) {
 541                         return sha1($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"] .
 542                                 $_SERVER["REDIRECT_SSL_CLIENT_V_START"] .
 543                                 $_SERVER["REDIRECT_SSL_CLIENT_V_END"] .
 544                                 $_SERVER["REDIRECT_SSL_CLIENT_S_DN"]);
 545                 }
 546                 return "";
 547         }
 548
 549         function authenticate_user($link, $login, $password, $check_only = false) {
 550
 551                 if (!SINGLE_USER_MODE) {
 552
 553                         $user_id = false;
 554                         $modules = explode(",", AUTH_MODULES);
 555
 556                         foreach ($modules as $module) {
 557                                 $module_class = "auth_$module";
 558                                 if (class_exists($module_class)) {
 559                                         $authenticator = new $module_class($link);
 560
 561                                         $user_id = (int) $authenticator->authenticate($login, $password);
 562
 563                                         if ($user_id) {
 564                                                 $_SESSION["auth_module"] = $module;
 565                                                 break;
 566                                         }
 567
 568                                 } else {
 569                                         print T_sprintf("Fatal: authentication module %s not found.", $module);
 570                                         die;
 571                                 }
 572                         }
 573
 574                         if ($user_id && !$check_only) {
 575                                 $_SESSION["uid"] = $user_id;
 576
 577                                 $result = db_query($link, "SELECT login,access_level,pwd_hash FROM ttrss_users
 578                                         WHERE id = '$user_id'");
 579
 580                                 $_SESSION["name"] = db_fetch_result($result, 0, "login");
 581                                 $_SESSION["access_level"] = db_fetch_result($result, 0, "access_level");
 582                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 583
 584                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 585                                         $_SESSION["uid"]);
 586
 587                                 $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 588                                 $_SESSION["pwd_hash"] = db_fetch_result($result, 0, "pwd_hash");
 589
 590                                 $_SESSION["last_version_check"] = time();
 591
 592                                 initialize_user_prefs($link, $_SESSION["uid"]);
 593
 594                                 return true;
 595                         }
 596
 597                         return false;
 598
 599                 } else {
 600
 601                         $_SESSION["uid"] = 1;
 602                         $_SESSION["name"] = "admin";
 603                         $_SESSION["access_level"] = 10;
 604
 605                         $_SESSION["hide_hello"] = true;
 606                         $_SESSION["hide_logout"] = true;
 607
 608                         $_SESSION["auth_module"] = false;
 609
 610                         if (!$_SESSION["csrf_token"]) {
 611                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 612                         }
 613
 614                         $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 615
 616                         initialize_user_prefs($link, $_SESSION["uid"]);
 617
 618                         return true;
 619                 }
 620         }
 621
 622         function make_password($length = 8) {
 623
 624                 $password = "";
 625                 $possible = "0123456789abcdfghjkmnpqrstvwxyzABCDFGHJKMNPQRSTVWXYZ";
 626
 627         $i = 0;
 628
 629                 while ($i < $length) {
 630                         $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 631
 632                         if (!strstr($password, $char)) {
 633                                 $password .= $char;
 634                                 $i++;
 635                         }
 636                 }
 637                 return $password;
 638         }
 639
 640         // this is called after user is created to initialize default feeds, labels
 641         // or whatever else
 642
 643         // user preferences are checked on every login, not here
 644
 645         function initialize_user($link, $uid) {
 646
 647                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 648                         values ('$uid', 'Tiny Tiny RSS: New Releases',
 649                         'http://tt-rss.org/releases.rss')");
 650
 651                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 652                         values ('$uid', 'Tiny Tiny RSS: Forum',
 653                                 'http://tt-rss.org/forum/rss.php')");
 654         }
 655
 656         function logout_user() {
 657                 session_destroy();
 658                 if (isset($_COOKIE[session_name()])) {
 659                    setcookie(session_name(), '', time()-42000, '/');
 660                 }
 661         }
 662
 663         function validate_csrf($csrf_token) {
 664                 return $csrf_token == $_SESSION['csrf_token'];
 665         }
 666
 667         function validate_session($link) {
 668                 if (SINGLE_USER_MODE) return true;
 669
 670                 $check_ip = $_SESSION['ip_address'];
 671
 672                 switch (SESSION_CHECK_ADDRESS) {
 673                 case 0:
 674                         $check_ip = '';
 675                         break;
 676                 case 1:
 677                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 678                         break;
 679                 case 2:
 680                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.'));
 681                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 682                         break;
 683                 };
 684
 685                 if ($check_ip && strpos($_SERVER['REMOTE_ADDR'], $check_ip) !== 0) {
 686                         $_SESSION["login_error_msg"] =
 687                                 __("Session failed to validate (incorrect IP)");
 688                         return false;
 689                 }
 690
 691                 if ($_SESSION["ref_schema_version"] != get_schema_version($link, true))
 692                         return false;
 693
 694                 if ($_SESSION["uid"]) {
 695
 696                         $result = db_query($link,
 697                                 "SELECT pwd_hash FROM ttrss_users WHERE id = '".$_SESSION["uid"]."'");
 698
 699                         $pwd_hash = db_fetch_result($result, 0, "pwd_hash");
 700
 701                         if ($pwd_hash != $_SESSION["pwd_hash"]) {
 702                                 return false;
 703                         }
 704                 }
 705
 706 /*              if ($_SESSION["cookie_lifetime"] && $_SESSION["uid"]) {
 707
 708                         //print_r($_SESSION);
 709
 710                         if (time() > $_SESSION["cookie_lifetime"]) {
 711                                 return false;
 712                         }
 713                 } */
 714
 715                 return true;
 716         }
 717
 718         function login_sequence($link, $login_form = 0) {
 719                 if (SINGLE_USER_MODE) {
 720                         return authenticate_user($link, "admin", null);
 721                 } else {
 722                         if (!$_SESSION["uid"] || !validate_session($link)) {
 723
 724                                 if (AUTH_AUTO_LOGIN && authenticate_user($link, null, null)) {
 725                                     $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 726                                 } else {
 727                                          authenticate_user($link, null, null, true);
 728                                 }
 729
 730                                 if (!$_SESSION["uid"]) render_login_form($link, $login_form);
 731
 732                         } else {
 733                                 /* bump login timestamp */
 734                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 735                                         $_SESSION["uid"]);
 736                         }
 737
 738                         if ($_SESSION["uid"] && $_SESSION["language"] && SESSION_COOKIE_LIFETIME > 0) {
 739                                 setcookie("ttrss_lang", $_SESSION["language"],
 740                                         time() + SESSION_COOKIE_LIFETIME);
 741                         }
 742                 }
 743         }
 744
 745         function truncate_string($str, $max_len, $suffix = '&hellip;') {
 746                 if (mb_strlen($str, "utf-8") > $max_len - 3) {
 747                         return mb_substr($str, 0, $max_len, "utf-8") . $suffix;
 748                 } else {
 749                         return $str;
 750                 }
 751         }
 752
 753         function theme_image($link, $filename) {
 754                 if ($link) {
 755                         $theme_path = get_user_theme_path($link);
 756
 757                         if ($theme_path && is_file($theme_path.$filename)) {
 758                                 return $theme_path.$filename;
 759                         } else {
 760                                 return $filename;
 761                         }
 762                 } else {
 763                         return $filename;
 764                 }
 765         }
 766
 767         function get_user_theme($link) {
 768
 769                 if (get_schema_version($link) >= 63 && $_SESSION["uid"]) {
 770                         $theme_name = get_pref($link, "_THEME_ID");
 771                         if (is_dir("themes/$theme_name")) {
 772                                 return $theme_name;
 773                         } else {
 774                                 return '';
 775                         }
 776                 } else {
 777                         return '';
 778                 }
 779
 780         }
 781
 782         function get_user_theme_path($link) {
 783                 $theme_path = '';
 784
 785                 if (get_schema_version($link) >= 63 && $_SESSION["uid"]) {
 786                         $theme_name = get_pref($link, "_THEME_ID");
 787
 788                         if ($theme_name && is_dir("themes/$theme_name")) {
 789                                 $theme_path = "themes/$theme_name/";
 790                         } else {
 791                                 $theme_name = '';
 792                         }
 793                 } else {
 794                         $theme_path = '';
 795                 }
 796
 797                 if ($theme_path) {
 798                         if (is_file("$theme_path/theme.ini")) {
 799                                 $ini = parse_ini_file("$theme_path/theme.ini", true);
 800                                 if ($ini['theme']['version'] >= THEME_VERSION_REQUIRED) {
 801                                         return $theme_path;
 802                                 }
 803                         }
 804                 }
 805                 return '';
 806         }
 807
 808         function get_user_theme_options($link) {
 809                 $t = get_user_theme_path($link);
 810
 811                 if ($t) {
 812                         if (is_file("$t/theme.ini")) {
 813                                 $ini = parse_ini_file("$t/theme.ini", true);
 814                                 if ($ini['theme']['version']) {
 815                                         return $ini['theme']['options'];
 816                                 }
 817                         }
 818                 }
 819                 return '';
 820         }
 821
 822         function print_theme_includes($link) {
 823
 824                 $t = get_user_theme_path($link);
 825                 $time = time();
 826
 827                 if ($t) {
 828                         print "<link rel=\"stylesheet\" type=\"text/css\"
 829                                 href=\"$t/theme.css?$time \">";
 830                         if (file_exists("$t/theme.js")) {
 831                                 print "<script type=\"text/javascript\" src=\"$t/theme.js?$time\">
 832                                         </script>";
 833                         }
 834                 }
 835         }
 836
 837         function get_all_themes() {
 838                 $themes = glob("themes/*");
 839
 840                 asort($themes);
 841
 842                 $rv = array();
 843
 844                 foreach ($themes as $t) {
 845                         if (is_file("$t/theme.ini")) {
 846                                 $ini = parse_ini_file("$t/theme.ini", true);
 847                                 if ($ini['theme']['version'] >= THEME_VERSION_REQUIRED &&
 848                                                         !$ini['theme']['disabled']) {
 849                                         $entry = array();
 850                                         $entry["path"] = $t;
 851                                         $entry["base"] = basename($t);
 852                                         $entry["name"] = $ini['theme']['name'];
 853                                         $entry["version"] = $ini['theme']['version'];
 854                                         $entry["author"] = $ini['theme']['author'];
 855                                         $entry["options"] = $ini['theme']['options'];
 856                                         array_push($rv, $entry);
 857                                 }
 858                         }
 859                 }
 860
 861                 return $rv;
 862         }
 863
 864         function convert_timestamp($timestamp, $source_tz, $dest_tz) {
 865
 866                 try {
 867                         $source_tz = new DateTimeZone($source_tz);
 868                 } catch (Exception $e) {
 869                         $source_tz = new DateTimeZone('UTC');
 870                 }
 871
 872                 try {
 873                         $dest_tz = new DateTimeZone($dest_tz);
 874                 } catch (Exception $e) {
 875                         $dest_tz = new DateTimeZone('UTC');
 876                 }
 877
 878                 $dt = new DateTime(date('Y-m-d H:i:s', $timestamp), $source_tz);
 879                 return $dt->format('U') + $dest_tz->getOffset($dt);
 880         }
 881
 882         function make_local_datetime($link, $timestamp, $long, $owner_uid = false,
 883                                         $no_smart_dt = false) {
 884
 885                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 886                 if (!$timestamp) $timestamp = '1970-01-01 0:00';
 887
 888                 global $utc_tz;
 889                 global $tz_offset;
 890
 891                 # We store date in UTC internally
 892                 $dt = new DateTime($timestamp, $utc_tz);
 893
 894                 if ($tz_offset == -1) {
 895
 896                         $user_tz_string = get_pref($link, 'USER_TIMEZONE', $owner_uid);
 897
 898                         try {
 899                                 $user_tz = new DateTimeZone($user_tz_string);
 900                         } catch (Exception $e) {
 901                                 $user_tz = $utc_tz;
 902                         }
 903
 904                         $tz_offset = $user_tz->getOffset($dt);
 905                 }
 906
 907                 $user_timestamp = $dt->format('U') + $tz_offset;
 908
 909                 if (!$no_smart_dt) {
 910                         return smart_date_time($link, $user_timestamp,
 911                                 $tz_offset, $owner_uid);
 912                 } else {
 913                         if ($long)
 914                                 $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 915                         else
 916                                 $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 917
 918                         return date($format, $user_timestamp);
 919                 }
 920         }
 921
 922         function smart_date_time($link, $timestamp, $tz_offset = 0, $owner_uid = false) {
 923                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 924
 925                 if (date("Y.m.d", $timestamp) == date("Y.m.d", time() + $tz_offset)) {
 926                         return date("G:i", $timestamp);
 927                 } else if (date("Y", $timestamp) == date("Y", time() + $tz_offset)) {
 928                         $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
 929                         return date($format, $timestamp);
 930                 } else {
 931                         $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
 932                         return date($format, $timestamp);
 933                 }
 934         }
 935
 936         function sql_bool_to_bool($s) {
 937                 if ($s == "t" || $s == "1" || $s == "true") {
 938                         return true;
 939                 } else {
 940                         return false;
 941                 }
 942         }
 943
 944         function bool_to_sql_bool($s) {
 945                 if ($s) {
 946                         return "true";
 947                 } else {
 948                         return "false";
 949                 }
 950         }
 951
 952         // Session caching removed due to causing wrong redirects to upgrade
 953         // script when get_schema_version() is called on an obsolete session
 954         // created on a previous schema version.
 955         function get_schema_version($link, $nocache = false) {
 956                 global $schema_version;
 957
 958                 if (!$schema_version) {
 959                         $result = db_query($link, "SELECT schema_version FROM ttrss_version");
 960                         $version = db_fetch_result($result, 0, "schema_version");
 961                         $schema_version = $version;
 962                         return $version;
 963                 } else {
 964                         return $schema_version;
 965                 }
 966         }
 967
 968         function sanity_check($link) {
 969                 require_once 'errors.php';
 970
 971                 $error_code = 0;
 972                 $schema_version = get_schema_version($link, true);
 973
 974                 if ($schema_version != SCHEMA_VERSION) {
 975                         $error_code = 5;
 976                 }
 977
 978                 if (DB_TYPE == "mysql") {
 979                         $result = db_query($link, "SELECT true", false);
 980                         if (db_num_rows($result) != 1) {
 981                                 $error_code = 10;
 982                         }
 983                 }
 984
 985                 if (db_escape_string("testTEST") != "testTEST") {
 986                         $error_code = 12;
 987                 }
 988
 989                 return array("code" => $error_code, "message" => $ERRORS[$error_code]);
 990         }
 991
 992         function file_is_locked($filename) {
 993                 if (function_exists('flock')) {
 994                         $fp = @fopen(LOCK_DIRECTORY . "/$filename", "r");
 995                         if ($fp) {
 996                                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 997                                         flock($fp, LOCK_UN);
 998                                         fclose($fp);
 999                                         return false;
1000                                 }
1001                                 fclose($fp);
1002                                 return true;
1003                         } else {
1004                                 return false;
1005                         }
1006                 }
1007                 return true; // consider the file always locked and skip the test
1008         }
1009
1010         function make_lockfile($filename) {
1011                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
1012
1013                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1014                         if (function_exists('posix_getpid')) {
1015                                 fwrite($fp, posix_getpid() . "\n");
1016                         }
1017                         return $fp;
1018                 } else {
1019                         return false;
1020                 }
1021         }
1022
1023         function make_stampfile($filename) {
1024                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
1025
1026                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1027                         fwrite($fp, time() . "\n");
1028                         flock($fp, LOCK_UN);
1029                         fclose($fp);
1030                         return true;
1031                 } else {
1032                         return false;
1033                 }
1034         }
1035
1036         function sql_random_function() {
1037                 if (DB_TYPE == "mysql") {
1038                         return "RAND()";
1039                 } else {
1040                         return "RANDOM()";
1041                 }
1042         }
1043
1044         function catchup_feed($link, $feed, $cat_view, $owner_uid = false, $max_id = false) {
1045
1046                         if (!$owner_uid) $owner_uid = $_SESSION['uid'];
1047
1048                         //if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
1049
1050                         $ref_check_qpart = ($max_id &&
1051                                 !get_pref($link, 'REVERSE_HEADLINES')) ? "ref_id <= '$max_id'" : "true";
1052
1053                         if (is_numeric($feed)) {
1054                                 if ($cat_view) {
1055
1056                                         if ($feed >= 0) {
1057
1058                                                 if ($feed > 0) {
1059                                                         $children = getChildCategories($link, $feed, $owner_uid);
1060                                                         array_push($children, $feed);
1061
1062                                                         $children = join(",", $children);
1063
1064                                                         $cat_qpart = "cat_id IN ($children)";
1065                                                 } else {
1066                                                         $cat_qpart = "cat_id IS NULL";
1067                                                 }
1068
1069                                                 db_query($link, "UPDATE ttrss_user_entries
1070                                                         SET unread = false,last_read = NOW()
1071                                                         WHERE feed_id IN (SELECT id FROM ttrss_feeds WHERE $cat_qpart)
1072                                                         AND $ref_check_qpart
1073                                                         AND owner_uid = $owner_uid");
1074
1075                                         } else if ($feed == -2) {
1076
1077                                                 db_query($link, "UPDATE ttrss_user_entries
1078                                                         SET unread = false,last_read = NOW() WHERE (SELECT COUNT(*)
1079                                                                 FROM ttrss_user_labels2 WHERE article_id = ref_id) > 0
1080                                                                 AND $ref_check_qpart
1081                                                                 AND unread = true AND owner_uid = $owner_uid");
1082                                         }
1083
1084                                 } else if ($feed > 0) {
1085
1086                                         db_query($link, "UPDATE ttrss_user_entries
1087                                                         SET unread = false,last_read = NOW()
1088                                                         WHERE feed_id = '$feed'
1089                                                         AND $ref_check_qpart
1090                                                         AND owner_uid = $owner_uid");
1091
1092                                 } else if ($feed < 0 && $feed > -10) { // special, like starred
1093
1094                                         if ($feed == -1) {
1095                                                 db_query($link, "UPDATE ttrss_user_entries
1096                                                         SET unread = false,last_read = NOW()
1097                                                         WHERE marked = true
1098                                                         AND $ref_check_qpart
1099                                                         AND owner_uid = $owner_uid");
1100                                         }
1101
1102                                         if ($feed == -2) {
1103                                                 db_query($link, "UPDATE ttrss_user_entries
1104                                                         SET unread = false,last_read = NOW()
1105                                                         WHERE published = true
1106                                                         AND $ref_check_qpart
1107                                                         AND owner_uid = $owner_uid");
1108                                         }
1109
1110                                         if ($feed == -3) {
1111
1112                                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE");
1113
1114                                                 if (DB_TYPE == "pgsql") {
1115                                                         $match_part = "updated > NOW() - INTERVAL '$intl hour' ";
1116                                                 } else {
1117                                                         $match_part = "updated > DATE_SUB(NOW(),
1118                                                                 INTERVAL $intl HOUR) ";
1119                                                 }
1120
1121                                                 $result = db_query($link, "SELECT id FROM ttrss_entries,
1122                                                         ttrss_user_entries WHERE $match_part AND
1123                                                         unread = true AND
1124                                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
1125                                                         owner_uid = $owner_uid");
1126
1127                                                 $affected_ids = array();
1128
1129                                                 while ($line = db_fetch_assoc($result)) {
1130                                                         array_push($affected_ids, $line["id"]);
1131                                                 }
1132
1133                                                 catchupArticlesById($link, $affected_ids, 0);
1134                                         }
1135
1136                                         if ($feed == -4) {
1137                                                 db_query($link, "UPDATE ttrss_user_entries
1138                                                         SET unread = false,last_read = NOW()
1139                                                         WHERE $ref_check_qpart AND owner_uid = $owner_uid");
1140                                         }
1141
1142                                 } else if ($feed < -10) { // label
1143
1144                                         $label_id = -$feed - 11;
1145
1146                                         db_query($link, "UPDATE ttrss_user_entries, ttrss_user_labels2
1147                                                 SET unread = false, last_read = NOW()
1148                                                         WHERE label_id = '$label_id' AND unread = true
1149                                                         AND $ref_check_qpart
1150                                                         AND owner_uid = '$owner_uid' AND ref_id = article_id");
1151
1152                                 }
1153
1154                                 ccache_update($link, $feed, $owner_uid, $cat_view);
1155
1156                         } else { // tag
1157                                 db_query($link, "BEGIN");
1158
1159                                 $tag_name = db_escape_string($feed);
1160
1161                                 $result = db_query($link, "SELECT post_int_id FROM ttrss_tags
1162                                         WHERE tag_name = '$tag_name' AND owner_uid = $owner_uid");
1163
1164                                 while ($line = db_fetch_assoc($result)) {
1165                                         db_query($link, "UPDATE ttrss_user_entries SET
1166                                                 unread = false, last_read = NOW()
1167                                                 WHERE $ref_check_qpart AND int_id = " . $line["post_int_id"]);
1168                                 }
1169                                 db_query($link, "COMMIT");
1170                         }
1171         }
1172
1173         function getAllCounters($link, $omode = "flc", $active_feed = false) {
1174
1175                 if (!$omode) $omode = "flc";
1176
1177                 $data = getGlobalCounters($link);
1178
1179                 $data = array_merge($data, getVirtCounters($link));
1180
1181                 if (strchr($omode, "l")) $data = array_merge($data, getLabelCounters($link));
1182                 if (strchr($omode, "f")) $data = array_merge($data, getFeedCounters($link, $active_feed));
1183                 if (strchr($omode, "t")) $data = array_merge($data, getTagCounters($link));
1184                 if (strchr($omode, "c")) $data = array_merge($data, getCategoryCounters($link));
1185
1186                 return $data;
1187         }
1188
1189         function getCategoryTitle($link, $cat_id) {
1190
1191                 if ($cat_id == -1) {
1192                         return __("Special");
1193                 } else if ($cat_id == -2) {
1194                         return __("Labels");
1195                 } else {
1196
1197                         $result = db_query($link, "SELECT title FROM ttrss_feed_categories WHERE
1198                                 id = '$cat_id'");
1199
1200                         if (db_num_rows($result) == 1) {
1201                                 return db_fetch_result($result, 0, "title");
1202                         } else {
1203                                 return __("Uncategorized");
1204                         }
1205                 }
1206         }
1207
1208
1209         function getCategoryCounters($link) {
1210                 $ret_arr = array();
1211
1212                 /* Labels category */
1213
1214                 $cv = array("id" => -2, "kind" => "cat",
1215                         "counter" => getCategoryUnread($link, -2));
1216
1217                 array_push($ret_arr, $cv);
1218
1219                 $result = db_query($link, "SELECT id AS cat_id, value AS unread,
1220                         (SELECT COUNT(id) FROM ttrss_feed_categories AS c2
1221                                 WHERE c2.parent_cat = ttrss_feed_categories.id) AS num_children
1222                         FROM ttrss_feed_categories, ttrss_cat_counters_cache
1223                         WHERE ttrss_cat_counters_cache.feed_id = id AND
1224                         ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid AND
1225                         ttrss_feed_categories.owner_uid = " . $_SESSION["uid"]);
1226
1227                 while ($line = db_fetch_assoc($result)) {
1228                         $line["cat_id"] = (int) $line["cat_id"];
1229
1230                         if ($line["num_children"] > 0) {
1231                                 $child_counter = getCategoryChildrenUnread($link, $line["cat_id"], $_SESSION["uid"]);
1232                         } else {
1233                                 $child_counter = 0;
1234                         }
1235
1236                         $cv = array("id" => $line["cat_id"], "kind" => "cat",
1237                                 "counter" => $line["unread"] + $child_counter);
1238
1239                         array_push($ret_arr, $cv);
1240                 }
1241
1242                 /* Special case: NULL category doesn't actually exist in the DB */
1243
1244                 $cv = array("id" => 0, "kind" => "cat",
1245                         "counter" => (int) ccache_find($link, 0, $_SESSION["uid"], true));
1246
1247                 array_push($ret_arr, $cv);
1248
1249                 return $ret_arr;
1250         }
1251
1252         // only accepts real cats (>= 0)
1253         function getCategoryChildrenUnread($link, $cat, $owner_uid = false) {
1254                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1255
1256                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories WHERE parent_cat = '$cat'
1257                                 AND owner_uid = $owner_uid");
1258
1259                 $unread = 0;
1260
1261                 while ($line = db_fetch_assoc($result)) {
1262                         $unread += getCategoryUnread($link, $line["id"], $owner_uid);
1263                         $unread += getCategoryChildrenUnread($link, $line["id"], $owner_uid);
1264                 }
1265
1266                 return $unread;
1267         }
1268
1269         function getCategoryUnread($link, $cat, $owner_uid = false) {
1270
1271                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1272
1273                 if ($cat >= 0) {
1274
1275                         if ($cat != 0) {
1276                                 $cat_query = "cat_id = '$cat'";
1277                         } else {
1278                                 $cat_query = "cat_id IS NULL";
1279                         }
1280
1281                         $result = db_query($link, "SELECT id FROM ttrss_feeds WHERE $cat_query
1282                                         AND owner_uid = " . $owner_uid);
1283
1284                         $cat_feeds = array();
1285                         while ($line = db_fetch_assoc($result)) {
1286                                 array_push($cat_feeds, "feed_id = " . $line["id"]);
1287                         }
1288
1289                         if (count($cat_feeds) == 0) return 0;
1290
1291                         $match_part = implode(" OR ", $cat_feeds);
1292
1293                         $result = db_query($link, "SELECT COUNT(int_id) AS unread
1294                                 FROM ttrss_user_entries
1295                                 WHERE   unread = true AND ($match_part)
1296                                 AND owner_uid = " . $owner_uid);
1297
1298                         $unread = 0;
1299
1300                         # this needs to be rewritten
1301                         while ($line = db_fetch_assoc($result)) {
1302                                 $unread += $line["unread"];
1303                         }
1304
1305                         return $unread;
1306                 } else if ($cat == -1) {
1307                         return getFeedUnread($link, -1) + getFeedUnread($link, -2) + getFeedUnread($link, -3) + getFeedUnread($link, 0);
1308                 } else if ($cat == -2) {
1309
1310                         $result = db_query($link, "
1311                                 SELECT COUNT(unread) AS unread FROM
1312                                         ttrss_user_entries, ttrss_user_labels2
1313                                 WHERE article_id = ref_id AND unread = true
1314                                         AND ttrss_user_entries.owner_uid = '$owner_uid'");
1315
1316                         $unread = db_fetch_result($result, 0, "unread");
1317
1318                         return $unread;
1319
1320                 }
1321         }
1322
1323         function getFeedUnread($link, $feed, $is_cat = false) {
1324                 return getFeedArticles($link, $feed, $is_cat, true, $_SESSION["uid"]);
1325         }
1326
1327         function getLabelUnread($link, $label_id, $owner_uid = false) {
1328                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1329
1330                 $result = db_query($link, "SELECT COUNT(ref_id) AS unread FROM ttrss_user_entries, ttrss_user_labels2
1331                         WHERE owner_uid = '$owner_uid' AND unread = true AND label_id = '$label_id' AND article_id = ref_id");
1332
1333                 if (db_num_rows($result) != 0) {
1334                         return db_fetch_result($result, 0, "unread");
1335                 } else {
1336                         return 0;
1337                 }
1338         }
1339
1340         function getFeedArticles($link, $feed, $is_cat = false, $unread_only = false,
1341                 $owner_uid = false) {
1342
1343                 $n_feed = (int) $feed;
1344                 $need_entries = false;
1345
1346                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1347
1348                 if ($unread_only) {
1349                         $unread_qpart = "unread = true";
1350                 } else {
1351                         $unread_qpart = "true";
1352                 }
1353
1354                 if ($is_cat) {
1355                         return getCategoryUnread($link, $n_feed, $owner_uid);
1356                 } else if ($n_feed == -6) {
1357                         return 0;
1358                 } else if ($feed != "0" && $n_feed == 0) {
1359
1360                         $feed = db_escape_string($feed);
1361
1362                         $result = db_query($link, "SELECT SUM((SELECT COUNT(int_id)
1363                                 FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1364                                         AND ref_id = id AND $unread_qpart)) AS count FROM ttrss_tags
1365                                 WHERE owner_uid = $owner_uid AND tag_name = '$feed'");
1366                         return db_fetch_result($result, 0, "count");
1367
1368                 } else if ($n_feed == -1) {
1369                         $match_part = "marked = true";
1370                 } else if ($n_feed == -2) {
1371                         $match_part = "published = true";
1372                 } else if ($n_feed == -3) {
1373                         $match_part = "unread = true AND score >= 0";
1374
1375                         $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
1376
1377                         if (DB_TYPE == "pgsql") {
1378                                 $match_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
1379                         } else {
1380                                 $match_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
1381                         }
1382
1383                         $need_entries = true;
1384
1385                 } else if ($n_feed == -4) {
1386                         $match_part = "true";
1387                 } else if ($n_feed >= 0) {
1388
1389                         if ($n_feed != 0) {
1390                                 $match_part = "feed_id = '$n_feed'";
1391                         } else {
1392                                 $match_part = "feed_id IS NULL";
1393                         }
1394
1395                 } else if ($feed < -10) {
1396
1397                         $label_id = -$feed - 11;
1398
1399                         return getLabelUnread($link, $label_id, $owner_uid);
1400
1401                 }
1402
1403                 if ($match_part) {
1404
1405                         if ($need_entries) {
1406                                 $from_qpart = "ttrss_user_entries,ttrss_entries";
1407                                 $from_where = "ttrss_entries.id = ttrss_user_entries.ref_id AND";
1408                         } else {
1409                                 $from_qpart = "ttrss_user_entries";
1410                         }
1411
1412                         $query = "SELECT count(int_id) AS unread
1413                                 FROM $from_qpart WHERE
1414                                 $unread_qpart AND $from_where ($match_part) AND ttrss_user_entries.owner_uid = $owner_uid";
1415
1416                         //echo "[$feed/$query]\n";
1417
1418                         $result = db_query($link, $query);
1419
1420                 } else {
1421
1422                         $result = db_query($link, "SELECT COUNT(post_int_id) AS unread
1423                                 FROM ttrss_tags,ttrss_user_entries,ttrss_entries
1424                                 WHERE tag_name = '$feed' AND post_int_id = int_id AND ref_id = ttrss_entries.id
1425                                 AND $unread_qpart AND ttrss_tags.owner_uid = " . $owner_uid);
1426                 }
1427
1428                 $unread = db_fetch_result($result, 0, "unread");
1429
1430                 return $unread;
1431         }
1432
1433         function getGlobalUnread($link, $user_id = false) {
1434
1435                 if (!$user_id) {
1436                         $user_id = $_SESSION["uid"];
1437                 }
1438
1439                 $result = db_query($link, "SELECT SUM(value) AS c_id FROM ttrss_counters_cache
1440                         WHERE owner_uid = '$user_id' AND feed_id > 0");
1441
1442                 $c_id = db_fetch_result($result, 0, "c_id");
1443
1444                 return $c_id;
1445         }
1446
1447         function getGlobalCounters($link, $global_unread = -1) {
1448                 $ret_arr = array();
1449
1450                 if ($global_unread == -1) {
1451                         $global_unread = getGlobalUnread($link);
1452                 }
1453
1454                 $cv = array("id" => "global-unread",
1455                         "counter" => (int) $global_unread);
1456
1457                 array_push($ret_arr, $cv);
1458
1459                 $result = db_query($link, "SELECT COUNT(id) AS fn FROM
1460                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1461
1462                 $subscribed_feeds = db_fetch_result($result, 0, "fn");
1463
1464                 $cv = array("id" => "subscribed-feeds",
1465                         "counter" => (int) $subscribed_feeds);
1466
1467                 array_push($ret_arr, $cv);
1468
1469                 return $ret_arr;
1470         }
1471
1472         function getTagCounters($link) {
1473
1474                 $ret_arr = array();
1475
1476                 $result = db_query($link, "SELECT tag_name,SUM((SELECT COUNT(int_id)
1477                         FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1478                                 AND ref_id = id AND unread = true)) AS count FROM ttrss_tags
1479                                 WHERE owner_uid = ".$_SESSION['uid']." GROUP BY tag_name
1480                                 ORDER BY count DESC LIMIT 55");
1481
1482                 $tags = array();
1483
1484                 while ($line = db_fetch_assoc($result)) {
1485                         $tags[$line["tag_name"]] += $line["count"];
1486                 }
1487
1488                 foreach (array_keys($tags) as $tag) {
1489                         $unread = $tags[$tag];
1490                         $tag = htmlspecialchars($tag);
1491
1492                         $cv = array("id" => $tag,
1493                                 "kind" => "tag",
1494                                 "counter" => $unread);
1495
1496                         array_push($ret_arr, $cv);
1497                 }
1498
1499                 return $ret_arr;
1500         }
1501
1502         function getVirtCounters($link) {
1503
1504                 $ret_arr = array();
1505
1506                 for ($i = 0; $i >= -4; $i--) {
1507
1508                         $count = getFeedUnread($link, $i);
1509
1510                         $cv = array("id" => $i,
1511                                 "counter" => (int) $count);
1512
1513 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1514 //                              $cv["xmsg"] = getFeedArticles($link, $i)." ".__("total");
1515
1516                         array_push($ret_arr, $cv);
1517                 }
1518
1519                 return $ret_arr;
1520         }
1521
1522         function getLabelCounters($link, $descriptions = false) {
1523
1524                 $ret_arr = array();
1525
1526                 $owner_uid = $_SESSION["uid"];
1527
1528                 $result = db_query($link, "SELECT id, caption FROM ttrss_labels2
1529                         WHERE owner_uid = '$owner_uid'");
1530
1531                 while ($line = db_fetch_assoc($result)) {
1532
1533                         $id = -$line["id"] - 11;
1534
1535                         $label_name = $line["caption"];
1536                         $count = getFeedUnread($link, $id);
1537
1538                         $cv = array("id" => $id,
1539                                 "counter" => (int) $count);
1540
1541                         if ($descriptions)
1542                                 $cv["description"] = $label_name;
1543
1544 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1545 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1546
1547                         array_push($ret_arr, $cv);
1548                 }
1549
1550                 return $ret_arr;
1551         }
1552
1553         function getFeedCounters($link, $active_feed = false) {
1554
1555                 $ret_arr = array();
1556
1557                 $query = "SELECT ttrss_feeds.id,
1558                                 ttrss_feeds.title,
1559                                 ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
1560                                 last_error, value AS count
1561                         FROM ttrss_feeds, ttrss_counters_cache
1562                         WHERE ttrss_feeds.owner_uid = ".$_SESSION["uid"]."
1563                                 AND ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid
1564                                 AND ttrss_counters_cache.feed_id = id";
1565
1566                 $result = db_query($link, $query);
1567                 $fctrs_modified = false;
1568
1569                 while ($line = db_fetch_assoc($result)) {
1570
1571                         $id = $line["id"];
1572                         $count = $line["count"];
1573                         $last_error = htmlspecialchars($line["last_error"]);
1574
1575                         $last_updated = make_local_datetime($link, $line['last_updated'], false);
1576
1577                         $has_img = feed_has_icon($id);
1578
1579                         if (date('Y') - date('Y', strtotime($line['last_updated'])) > 2)
1580                                 $last_updated = '';
1581
1582                         $cv = array("id" => $id,
1583                                 "updated" => $last_updated,
1584                                 "counter" => (int) $count,
1585                                 "has_img" => (int) $has_img);
1586
1587                         if ($last_error)
1588                                 $cv["error"] = $last_error;
1589
1590 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1591 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1592
1593                         if ($active_feed && $id == $active_feed)
1594                                 $cv["title"] = truncate_string($line["title"], 30);
1595
1596                         array_push($ret_arr, $cv);
1597
1598                 }
1599
1600                 return $ret_arr;
1601         }
1602
1603         function get_pgsql_version($link) {
1604                 $result = db_query($link, "SELECT version() AS version");
1605                 $version = explode(" ", db_fetch_result($result, 0, "version"));
1606                 return $version[1];
1607         }
1608
1609         /**
1610          * @return array (code => Status code, message => error message if available)
1611          *
1612          *                 0 - OK, Feed already exists
1613          *                 1 - OK, Feed added
1614          *                 2 - Invalid URL
1615          *                 3 - URL content is HTML, no feeds available
1616          *                 4 - URL content is HTML which contains multiple feeds.
1617          *                     Here you should call extractfeedurls in rpc-backend
1618          *                     to get all possible feeds.
1619          *                 5 - Couldn't download the URL content.
1620          */
1621         function subscribe_to_feed($link, $url, $cat_id = 0,
1622                         $auth_login = '', $auth_pass = '', $need_auth = false) {
1623
1624                 global $fetch_last_error;
1625
1626                 require_once "include/rssfuncs.php";
1627
1628                 $url = fix_url($url);
1629
1630                 if (!$url || !validate_feed_url($url)) return array("code" => 2);
1631
1632                 $update_method = 0;
1633
1634                 $contents = @fetch_file_contents($url, false, $auth_login, $auth_pass);
1635
1636                 if (!$contents) {
1637                         return array("code" => 5, "message" => $fetch_last_error);
1638                 }
1639
1640                 if (is_html($contents)) {
1641                         $feedUrls = get_feeds_from_html($url, $contents);
1642
1643                         if (count($feedUrls) == 0) {
1644                                 return array("code" => 3);
1645                         } else if (count($feedUrls) > 1) {
1646                                 return array("code" => 4, "feeds" => $feedUrls);
1647                         }
1648                         //use feed url as new URL
1649                         $url = key($feedUrls);
1650                 }
1651
1652                 if ($cat_id == "0" || !$cat_id) {
1653                         $cat_qpart = "NULL";
1654                 } else {
1655                         $cat_qpart = "'$cat_id'";
1656                 }
1657
1658                 $result = db_query($link,
1659                         "SELECT id FROM ttrss_feeds
1660                         WHERE feed_url = '$url' AND owner_uid = ".$_SESSION["uid"]);
1661
1662                 if (db_num_rows($result) == 0) {
1663                         $result = db_query($link,
1664                                 "INSERT INTO ttrss_feeds
1665                                         (owner_uid,feed_url,title,cat_id, auth_login,auth_pass,update_method)
1666                                 VALUES ('".$_SESSION["uid"]."', '$url',
1667                                 '[Unknown]', $cat_qpart, '$auth_login', '$auth_pass', '$update_method')");
1668
1669                         $result = db_query($link,
1670                                 "SELECT id FROM ttrss_feeds WHERE feed_url = '$url'
1671                                         AND owner_uid = " . $_SESSION["uid"]);
1672
1673                         $feed_id = db_fetch_result($result, 0, "id");
1674
1675                         if ($feed_id) {
1676                                 update_rss_feed($link, $feed_id, true);
1677                         }
1678
1679                         return array("code" => 1);
1680                 } else {
1681                         return array("code" => 0);
1682                 }
1683         }
1684
1685         function print_feed_select($link, $id, $default_id = "",
1686                 $attributes = "", $include_all_feeds = true,
1687                 $root_id = false, $nest_level = 0) {
1688
1689                 if (!$root_id) {
1690                         print "<select id=\"$id\" name=\"$id\" $attributes>";
1691                         if ($include_all_feeds) {
1692                                 $is_selected = ("0" == $default_id) ? "selected=\"1\"" : "";
1693                                 print "<option $is_selected value=\"0\">".__('All feeds')."</option>";
1694                         }
1695                 }
1696
1697                 if (get_pref($link, 'ENABLE_FEED_CATS')) {
1698
1699                         if ($root_id)
1700                                 $parent_qpart = "parent_cat = '$root_id'";
1701                         else
1702                                 $parent_qpart = "parent_cat IS NULL";
1703
1704                         $result = db_query($link, "SELECT id,title,
1705                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1706                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1707                                 FROM ttrss_feed_categories
1708                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1709
1710                         while ($line = db_fetch_assoc($result)) {
1711
1712                                 for ($i = 0; $i < $nest_level; $i++)
1713                                         $line["title"] = " - " . $line["title"];
1714
1715                                 $is_selected = ("CAT:".$line["id"] == $default_id) ? "selected=\"1\"" : "";
1716
1717                                 printf("<option $is_selected value='CAT:%d'>%s</option>",
1718                                         $line["id"], htmlspecialchars($line["title"]));
1719
1720                                 if ($line["num_children"] > 0)
1721                                         print_feed_select($link, $id, $default_id, $attributes,
1722                                                 $include_all_feeds, $line["id"], $nest_level+1);
1723
1724                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1725                                         WHERE cat_id = '".$line["id"]."' AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1726
1727                                 while ($fline = db_fetch_assoc($feed_result)) {
1728                                         $is_selected = ($fline["id"] == $default_id) ? "selected=\"1\"" : "";
1729
1730                                         $fline["title"] = " + " . $fline["title"];
1731
1732                                         for ($i = 0; $i < $nest_level; $i++)
1733                                                 $fline["title"] = " - " . $fline["title"];
1734
1735                                         printf("<option $is_selected value='%d'>%s</option>",
1736                                                 $fline["id"], htmlspecialchars($fline["title"]));
1737                                 }
1738                         }
1739
1740                         if (!$root_id) {
1741                                 $is_selected = ($default_id == "CAT:0") ? "selected=\"1\"" : "";
1742
1743                                 printf("<option $is_selected value='CAT:0'>%s</option>",
1744                                         __("Uncategorized"));
1745
1746                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1747                                         WHERE cat_id IS NULL AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1748
1749                                 while ($fline = db_fetch_assoc($feed_result)) {
1750                                         $is_selected = ($fline["id"] == $default_id && !$default_is_cat) ? "selected=\"1\"" : "";
1751
1752                                         $fline["title"] = " + " . $fline["title"];
1753
1754                                         for ($i = 0; $i < $nest_level; $i++)
1755                                                 $fline["title"] = " - " . $fline["title"];
1756
1757                                         printf("<option $is_selected value='%d'>%s</option>",
1758                                                 $fline["id"], htmlspecialchars($fline["title"]));
1759                                 }
1760                         }
1761
1762                 } else {
1763                         $result = db_query($link, "SELECT id,title FROM ttrss_feeds
1764                                 WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
1765
1766                         while ($line = db_fetch_assoc($result)) {
1767
1768                                 $is_selected = ($line["id"] == $default_id) ? "selected=\"1\"" : "";
1769
1770                                 printf("<option $is_selected value='%d'>%s</option>",
1771                                         $line["id"], htmlspecialchars($line["title"]));
1772                         }
1773                 }
1774
1775                 if (!$root_id) {
1776                         print "</select>";
1777                 }
1778         }
1779
1780         function print_feed_cat_select($link, $id, $default_id,
1781                 $attributes, $include_all_cats = true, $root_id = false, $nest_level = 0) {
1782
1783                         if (!$root_id) {
1784                                         print "<select id=\"$id\" name=\"$id\" default=\"$default_id\" onchange=\"catSelectOnChange(this)\" $attributes>";
1785                         }
1786
1787                         if ($root_id)
1788                                 $parent_qpart = "parent_cat = '$root_id'";
1789                         else
1790                                 $parent_qpart = "parent_cat IS NULL";
1791
1792                         $result = db_query($link, "SELECT id,title,
1793                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1794                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1795                                 FROM ttrss_feed_categories
1796                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1797
1798                         while ($line = db_fetch_assoc($result)) {
1799                                 if ($line["id"] == $default_id) {
1800                                         $is_selected = "selected=\"1\"";
1801                                 } else {
1802                                         $is_selected = "";
1803                                 }
1804
1805                                 for ($i = 0; $i < $nest_level; $i++)
1806                                         $line["title"] = " - " . $line["title"];
1807
1808                                 if ($line["title"])
1809                                         printf("<option $is_selected value='%d'>%s</option>",
1810                                                 $line["id"], htmlspecialchars($line["title"]));
1811
1812                                 if ($line["num_children"] > 0)
1813                                         print_feed_cat_select($link, $id, $default_id, $attributes,
1814                                                 $include_all_cats, $line["id"], $nest_level+1);
1815                         }
1816
1817                         if (!$root_id) {
1818                                 if ($include_all_cats) {
1819                                         if (db_num_rows($result) > 0) {
1820                                                 print "<option disabled=\"1\">--------</option>";
1821                                         }
1822
1823                                         if ($default_id == 0) {
1824                                                 $is_selected = "selected=\"1\"";
1825                                         } else {
1826                                                 $is_selected = "";
1827                                         }
1828
1829                                         print "<option $is_selected value=\"0\">".__('Uncategorized')."</option>";
1830                                 }
1831                                 print "</select>";
1832                         }
1833                 }
1834
1835         function checkbox_to_sql_bool($val) {
1836                 return ($val == "on") ? "true" : "false";
1837         }
1838
1839         function getFeedCatTitle($link, $id) {
1840                 if ($id == -1) {
1841                         return __("Special");
1842                 } else if ($id < -10) {
1843                         return __("Labels");
1844                 } else if ($id > 0) {
1845                         $result = db_query($link, "SELECT ttrss_feed_categories.title
1846                                 FROM ttrss_feeds, ttrss_feed_categories WHERE ttrss_feeds.id = '$id' AND
1847                                         cat_id = ttrss_feed_categories.id");
1848                         if (db_num_rows($result) == 1) {
1849                                 return db_fetch_result($result, 0, "title");
1850                         } else {
1851                                 return __("Uncategorized");
1852                         }
1853                 } else {
1854                         return "getFeedCatTitle($id) failed";
1855                 }
1856
1857         }
1858
1859         function getFeedIcon($id) {
1860                 switch ($id) {
1861                 case 0:
1862                         return "images/archive.png";
1863                         break;
1864                 case -1:
1865                         return "images/mark_set.png";
1866                         break;
1867                 case -2:
1868                         return "images/pub_set.png";
1869                         break;
1870                 case -3:
1871                         return "images/fresh.png";
1872                         break;
1873                 case -4:
1874                         return "images/tag.png";
1875                         break;
1876                 case -6:
1877                         return "images/recently_read.png";
1878                         break;
1879                 default:
1880                         if ($id < -10) {
1881                                 return "images/label.png";
1882                         } else {
1883                                 if (file_exists(ICONS_DIR . "/$id.ico"))
1884                                         return ICONS_URL . "/$id.ico";
1885                         }
1886                         break;
1887                 }
1888         }
1889
1890         function getFeedTitle($link, $id, $cat = false) {
1891                 if ($cat) {
1892                         return getCategoryTitle($link, $id);
1893                 } else if ($id == -1) {
1894                         return __("Starred articles");
1895                 } else if ($id == -2) {
1896                         return __("Published articles");
1897                 } else if ($id == -3) {
1898                         return __("Fresh articles");
1899                 } else if ($id == -4) {
1900                         return __("All articles");
1901                 } else if ($id === 0 || $id === "0") {
1902                         return __("Archived articles");
1903                 } else if ($id == -6) {
1904                         return __("Recently read");
1905                 } else if ($id < -10) {
1906                         $label_id = -$id - 11;
1907                         $result = db_query($link, "SELECT caption FROM ttrss_labels2 WHERE id = '$label_id'");
1908                         if (db_num_rows($result) == 1) {
1909                                 return db_fetch_result($result, 0, "caption");
1910                         } else {
1911                                 return "Unknown label ($label_id)";
1912                         }
1913
1914                 } else if (is_numeric($id) && $id > 0) {
1915                         $result = db_query($link, "SELECT title FROM ttrss_feeds WHERE id = '$id'");
1916                         if (db_num_rows($result) == 1) {
1917                                 return db_fetch_result($result, 0, "title");
1918                         } else {
1919                                 return "Unknown feed ($id)";
1920                         }
1921                 } else {
1922                         return $id;
1923                 }
1924         }
1925
1926         function make_init_params($link) {
1927                 $params = array();
1928
1929                 $params["theme"] = get_user_theme($link);
1930                 $params["theme_options"] = get_user_theme_options($link);
1931
1932                 $params["sign_progress"] = theme_image($link, "images/indicator_white.gif");
1933                 $params["sign_progress_tiny"] = theme_image($link, "images/indicator_tiny.gif");
1934                 $params["sign_excl"] = theme_image($link, "images/sign_excl.png");
1935                 $params["sign_info"] = theme_image($link, "images/sign_info.png");
1936
1937                 foreach (array("ON_CATCHUP_SHOW_NEXT_FEED", "HIDE_READ_FEEDS",
1938                         "ENABLE_FEED_CATS", "FEEDS_SORT_BY_UNREAD", "CONFIRM_FEED_CATCHUP",
1939                         "CDM_AUTO_CATCHUP", "FRESH_ARTICLE_MAX_AGE", "DEFAULT_ARTICLE_LIMIT",
1940                         "HIDE_READ_SHOWS_SPECIAL", "COMBINED_DISPLAY_MODE") as $param) {
1941
1942                                  $params[strtolower($param)] = (int) get_pref($link, $param);
1943                  }
1944
1945                 $params["icons_url"] = ICONS_URL;
1946                 $params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
1947                 $params["default_view_mode"] = get_pref($link, "_DEFAULT_VIEW_MODE");
1948                 $params["default_view_limit"] = (int) get_pref($link, "_DEFAULT_VIEW_LIMIT");
1949                 $params["default_view_order_by"] = get_pref($link, "_DEFAULT_VIEW_ORDER_BY");
1950                 $params["bw_limit"] = (int) $_SESSION["bw_limit"];
1951
1952                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
1953                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1954
1955                 $max_feed_id = db_fetch_result($result, 0, "mid");
1956                 $num_feeds = db_fetch_result($result, 0, "nf");
1957
1958                 $params["max_feed_id"] = (int) $max_feed_id;
1959                 $params["num_feeds"] = (int) $num_feeds;
1960
1961                 $params["collapsed_feedlist"] = (int) get_pref($link, "_COLLAPSED_FEEDLIST");
1962
1963                 $params["csrf_token"] = $_SESSION["csrf_token"];
1964
1965                 return $params;
1966         }
1967
1968         function make_runtime_info($link) {
1969                 $data = array();
1970
1971                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
1972                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1973
1974                 $max_feed_id = db_fetch_result($result, 0, "mid");
1975                 $num_feeds = db_fetch_result($result, 0, "nf");
1976
1977                 $data["max_feed_id"] = (int) $max_feed_id;
1978                 $data["num_feeds"] = (int) $num_feeds;
1979
1980                 $data['last_article_id'] = getLastArticleId($link);
1981                 $data['cdm_expanded'] = get_pref($link, 'CDM_EXPANDED');
1982
1983                 if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
1984
1985                         $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
1986
1987                         if (time() - $_SESSION["daemon_stamp_check"] > 30) {
1988
1989                                 $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
1990
1991                                 if ($stamp) {
1992                                         $stamp_delta = time() - $stamp;
1993
1994                                         if ($stamp_delta > 1800) {
1995                                                 $stamp_check = 0;
1996                                         } else {
1997                                                 $stamp_check = 1;
1998                                                 $_SESSION["daemon_stamp_check"] = time();
1999                                         }
2000
2001                                         $data['daemon_stamp_ok'] = $stamp_check;
2002
2003                                         $stamp_fmt = date("Y.m.d, G:i", $stamp);
2004
2005                                         $data['daemon_stamp'] = $stamp_fmt;
2006                                 }
2007                         }
2008                 }
2009
2010                 if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
2011                                 $new_version_details = @check_for_update($link);
2012
2013                                 $data['new_version_available'] = (int) ($new_version_details != false);
2014
2015                                 $_SESSION["last_version_check"] = time();
2016                                 $_SESSION["version_data"] = $new_version_details;
2017                 }
2018
2019                 return $data;
2020         }
2021
2022         function search_to_sql($link, $search, $match_on) {
2023
2024                 $search_query_part = "";
2025
2026                 $keywords = explode(" ", $search);
2027                 $query_keywords = array();
2028
2029                 foreach ($keywords as $k) {
2030                         if (strpos($k, "-") === 0) {
2031                                 $k = substr($k, 1);
2032                                 $not = "NOT";
2033                         } else {
2034                                 $not = "";
2035                         }
2036
2037                         $commandpair = explode(":", mb_strtolower($k), 2);
2038
2039                         if ($commandpair[0] == "note" && $commandpair[1]) {
2040
2041                                 if ($commandpair[1] == "true")
2042                                         array_push($query_keywords, "($not (note IS NOT NULL AND note != ''))");
2043                                 else
2044                                         array_push($query_keywords, "($not (note IS NULL OR note = ''))");
2045
2046                         } else if ($commandpair[0] == "star" && $commandpair[1]) {
2047
2048                                 if ($commandpair[1] == "true")
2049                                         array_push($query_keywords, "($not (marked = true))");
2050                                 else
2051                                         array_push($query_keywords, "($not (marked = false))");
2052
2053                         } else if ($commandpair[0] == "pub" && $commandpair[1]) {
2054
2055                                 if ($commandpair[1] == "true")
2056                                         array_push($query_keywords, "($not (published = true))");
2057                                 else
2058                                         array_push($query_keywords, "($not (published = false))");
2059
2060                         } else if (strpos($k, "@") === 0) {
2061
2062                                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $_SESSION['uid']);
2063                                 $orig_ts = strtotime(substr($k, 1));
2064                                 $k = date("Y-m-d", convert_timestamp($orig_ts, $user_tz_string, 'UTC'));
2065
2066                                 //$k = date("Y-m-d", strtotime(substr($k, 1)));
2067
2068                                 array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
2069                         } else if ($match_on == "both") {
2070                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2071                                                 OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2072                         } else if ($match_on == "title") {
2073                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%'))");
2074                         } else if ($match_on == "content") {
2075                                 array_push($query_keywords, "(UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2076                         }
2077                 }
2078
2079                 $search_query_part = implode("AND", $query_keywords);
2080
2081                 return $search_query_part;
2082         }
2083
2084         function getParentCategories($link, $cat, $owner_uid) {
2085                 $rv = array();
2086
2087                 $result = db_query($link, "SELECT parent_cat FROM ttrss_feed_categories
2088                         WHERE id = '$cat' AND parent_cat IS NOT NULL AND owner_uid = $owner_uid");
2089
2090                 while ($line = db_fetch_assoc($result)) {
2091                         array_push($rv, $line["parent_cat"]);
2092                         $rv = array_merge($rv, getParentCategories($link, $line["parent_cat"], $owner_uid));
2093                 }
2094
2095                 return $rv;
2096         }
2097
2098         function getChildCategories($link, $cat, $owner_uid) {
2099                 $rv = array();
2100
2101                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories
2102                         WHERE parent_cat = '$cat' AND owner_uid = $owner_uid");
2103
2104                 while ($line = db_fetch_assoc($result)) {
2105                         array_push($rv, $line["id"]);
2106                         $rv = array_merge($rv, getChildCategories($link, $line["id"], $owner_uid));
2107                 }
2108
2109                 return $rv;
2110         }
2111
2112         function queryFeedHeadlines($link, $feed, $limit, $view_mode, $cat_view, $search, $search_mode, $match_on, $override_order = false, $offset = 0, $owner_uid = 0, $filter = false, $since_id = 0, $include_children = false) {
2113
2114                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2115
2116                 $ext_tables_part = "";
2117
2118                         if ($search) {
2119
2120                                 if (SPHINX_ENABLED) {
2121                                         $ids = join(",", @sphinx_search($search, 0, 500));
2122
2123                                         if ($ids)
2124                                                 $search_query_part = "ref_id IN ($ids) AND ";
2125                                         else
2126                                                 $search_query_part = "ref_id = -1 AND ";
2127
2128                                 } else {
2129                                         $search_query_part = search_to_sql($link, $search, $match_on);
2130                                         $search_query_part .= " AND ";
2131                                 }
2132
2133                         } else {
2134                                 $search_query_part = "";
2135                         }
2136
2137                         if ($filter) {
2138
2139                                 if (DB_TYPE == "pgsql") {
2140                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '14 days' ";
2141                                 } else {
2142                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL 14 DAY) ";
2143                                 }
2144
2145                                 $override_order = "updated DESC";
2146
2147                                 $filter_query_part = filter_to_sql($link, $filter, $owner_uid);
2148
2149                                 // Try to check if SQL regexp implementation chokes on a valid regexp
2150                                 $result = db_query($link, "SELECT true AS true FROM ttrss_entries,
2151                                         ttrss_user_entries, ttrss_feeds, ttrss_feed_categories
2152                                         WHERE $filter_query_part LIMIT 1", false);
2153
2154                                 $test = db_fetch_result($result, 0, "true");
2155
2156                                 if (!$test) {
2157                                         $filter_query_part = "false AND";
2158                                 } else {
2159                                         $filter_query_part .= " AND";
2160                                 }
2161
2162                         } else {
2163                                 $filter_query_part = "";
2164                         }
2165
2166                         if ($since_id) {
2167                                 $since_id_part = "ttrss_entries.id > $since_id AND ";
2168                         } else {
2169                                 $since_id_part = "";
2170                         }
2171
2172                         $view_query_part = "";
2173
2174                         if ($view_mode == "adaptive" || $view_query_part == "noscores") {
2175                                 if ($search) {
2176                                         $view_query_part = " ";
2177                                 } else if ($feed != -1) {
2178                                         $unread = getFeedUnread($link, $feed, $cat_view);
2179
2180                                         if ($cat_view && $feed > 0 && $include_children)
2181                                                 $unread += getCategoryChildrenUnread($link, $feed);
2182
2183                                         if ($unread > 0) {
2184                                                 $view_query_part = " unread = true AND ";
2185                                         }
2186                                 }
2187                         }
2188
2189                         if ($view_mode == "marked") {
2190                                 $view_query_part = " marked = true AND ";
2191                         }
2192
2193                         if ($view_mode == "published") {
2194                                 $view_query_part = " published = true AND ";
2195                         }
2196
2197                         if ($view_mode == "unread") {
2198                                 $view_query_part = " unread = true AND ";
2199                         }
2200
2201                         if ($view_mode == "updated") {
2202                                 $view_query_part = " (last_read is null and unread = false) AND ";
2203                         }
2204
2205                         if ($limit > 0) {
2206                                 $limit_query_part = "LIMIT " . $limit;
2207                         }
2208
2209                         $allow_archived = false;
2210
2211                         $vfeed_query_part = "";
2212
2213                         // override query strategy and enable feed display when searching globally
2214                         if ($search && $search_mode == "all_feeds") {
2215                                 $query_strategy_part = "true";
2216                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2217                         /* tags */
2218                         } else if (!is_numeric($feed)) {
2219                                 $query_strategy_part = "true";
2220                                 $vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
2221                                         id = feed_id) as feed_title,";
2222                         } else if ($search && $search_mode == "this_cat") {
2223                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2224
2225                                 if ($feed > 0) {
2226                                         if ($include_children) {
2227                                                 $subcats = getChildCategories($link, $feed, $owner_uid);
2228                                                 array_push($subcats, $feed);
2229                                                 $cats_qpart = join(",", $subcats);
2230                                         } else {
2231                                                 $cats_qpart = $feed;
2232                                         }
2233
2234                                         $query_strategy_part = "ttrss_feeds.cat_id IN ($cats_qpart)";
2235
2236                                 } else {
2237                                         $query_strategy_part = "ttrss_feeds.cat_id IS NULL";
2238                                 }
2239
2240                         } else if ($feed > 0) {
2241
2242                                 if ($cat_view) {
2243
2244                                         if ($feed > 0) {
2245                                                 if ($include_children) {
2246                                                         # sub-cats
2247                                                         $subcats = getChildCategories($link, $feed, $owner_uid);
2248
2249                                                         array_push($subcats, $feed);
2250                                                         $query_strategy_part = "cat_id IN (".
2251                                                                         implode(",", $subcats).")";
2252
2253                                                 } else {
2254                                                         $query_strategy_part = "cat_id = '$feed'";
2255                                                 }
2256
2257                                         } else {
2258                                                 $query_strategy_part = "cat_id IS NULL";
2259                                         }
2260
2261                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2262
2263                                 } else {
2264                                         $query_strategy_part = "feed_id = '$feed'";
2265                                 }
2266                         } else if ($feed == 0 && !$cat_view) { // archive virtual feed
2267                                 $query_strategy_part = "feed_id IS NULL";
2268                                 $allow_archived = true;
2269                         } else if ($feed == 0 && $cat_view) { // uncategorized
2270                                 $query_strategy_part = "cat_id IS NULL AND feed_id IS NOT NULL";
2271                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2272                         } else if ($feed == -1) { // starred virtual feed
2273                                 $query_strategy_part = "marked = true";
2274                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2275                                 $allow_archived = true;
2276
2277                         } else if ($feed == -2) { // published virtual feed OR labels category
2278
2279                                 if (!$cat_view) {
2280                                         $query_strategy_part = "published = true";
2281                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2282                                         $allow_archived = true;
2283
2284                                         if (!$override_order) $override_order = "last_read DESC, updated DESC";
2285                                 } else {
2286                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2287
2288                                         $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2289
2290                                         $query_strategy_part = "ttrss_labels2.id = ttrss_user_labels2.label_id AND
2291                                                 ttrss_user_labels2.article_id = ref_id";
2292
2293                                 }
2294                         } else if ($feed == -6) { // recently read
2295                                 $query_strategy_part = "unread = false AND last_read IS NOT NULL";
2296                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2297                                 $allow_archived = true;
2298
2299                                 if (!$override_order) $override_order = "last_read DESC";
2300                         } else if ($feed == -3) { // fresh virtual feed
2301                                 $query_strategy_part = "unread = true AND score >= 0";
2302
2303                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
2304
2305                                 if (DB_TYPE == "pgsql") {
2306                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
2307                                 } else {
2308                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
2309                                 }
2310
2311                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2312                         } else if ($feed == -4) { // all articles virtual feed
2313                                 $query_strategy_part = "true";
2314                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2315                         } else if ($feed <= -10) { // labels
2316                                 $label_id = -$feed - 11;
2317
2318                                 $query_strategy_part = "label_id = '$label_id' AND
2319                                         ttrss_labels2.id = ttrss_user_labels2.label_id AND
2320                                         ttrss_user_labels2.article_id = ref_id";
2321
2322                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2323                                 $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2324                                 $allow_archived = true;
2325
2326                         } else {
2327                                 $query_strategy_part = "true";
2328                         }
2329
2330                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
2331                                 $date_sort_field = "updated";
2332                         } else {
2333                                 $date_sort_field = "date_entered";
2334                         }
2335
2336                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
2337                                 $order_by = "$date_sort_field";
2338                         } else {
2339                                 $order_by = "$date_sort_field DESC";
2340                         }
2341
2342                         if ($view_mode != "noscores") {
2343                                 $order_by = "score DESC, $order_by";
2344                         }
2345
2346                         if ($override_order) {
2347                                 $order_by = $override_order;
2348                         }
2349
2350                         $feed_title = "";
2351
2352                         if ($search) {
2353                                 $feed_title = T_sprintf("Search results: %s", $search);
2354                         } else {
2355                                 if ($cat_view) {
2356                                         $feed_title = getCategoryTitle($link, $feed);
2357                                 } else {
2358                                         if (is_numeric($feed) && $feed > 0) {
2359                                                 $result = db_query($link, "SELECT title,site_url,last_error
2360                                                         FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = $owner_uid");
2361
2362                                                 $feed_title = db_fetch_result($result, 0, "title");
2363                                                 $feed_site_url = db_fetch_result($result, 0, "site_url");
2364                                                 $last_error = db_fetch_result($result, 0, "last_error");
2365                                         } else {
2366                                                 $feed_title = getFeedTitle($link, $feed);
2367                                         }
2368                                 }
2369                         }
2370
2371                         $content_query_part = "content as content_preview, cached_content, ";
2372
2373                         if (is_numeric($feed)) {
2374
2375                                 if ($feed >= 0) {
2376                                         $feed_kind = "Feeds";
2377                                 } else {
2378                                         $feed_kind = "Labels";
2379                                 }
2380
2381                                 if ($limit_query_part) {
2382                                         $offset_query_part = "OFFSET $offset";
2383                                 }
2384
2385                                 // proper override_order applied above
2386                                 if ($vfeed_query_part && get_pref($link, 'VFEED_GROUP_BY_FEED', $owner_uid)) {
2387                                         if (!$override_order) {
2388                                                 $order_by = "ttrss_feeds.title, $order_by";
2389                                         } else {
2390                                                 $order_by = "ttrss_feeds.title, $override_order";
2391                                         }
2392                                 }
2393
2394                                 if (!$allow_archived) {
2395                                         $from_qpart = "ttrss_entries,ttrss_user_entries,ttrss_feeds$ext_tables_part";
2396                                         $feed_check_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
2397
2398                                 } else {
2399                                         $from_qpart = "ttrss_entries$ext_tables_part,ttrss_user_entries
2400                                                 LEFT JOIN ttrss_feeds ON (feed_id = ttrss_feeds.id)";
2401                                 }
2402
2403                                 $query = "SELECT DISTINCT
2404                                                 date_entered,
2405                                                 guid,
2406                                                 ttrss_entries.id,ttrss_entries.title,
2407                                                 updated,
2408                                                 label_cache,
2409                                                 tag_cache,
2410                                                 always_display_enclosures,
2411                                                 site_url,
2412                                                 note,
2413                                                 num_comments,
2414                                                 comments,
2415                                                 int_id,
2416                                                 unread,feed_id,marked,published,link,last_read,orig_feed_id,
2417                                                 ".SUBSTRING_FOR_DATE."(last_read,1,19) as last_read_noms,
2418                                                 $vfeed_query_part
2419                                                 $content_query_part
2420                                                 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated_noms,
2421                                                 author,score
2422                                         FROM
2423                                                 $from_qpart
2424                                         WHERE
2425                                         $feed_check_qpart
2426                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
2427                                         ttrss_user_entries.owner_uid = '$owner_uid' AND
2428                                         $search_query_part
2429                                         $filter_query_part
2430                                         $view_query_part
2431                                         $since_id_part
2432                                         $query_strategy_part ORDER BY $order_by
2433                                         $limit_query_part $offset_query_part";
2434
2435                                 if ($_REQUEST["debug"]) print $query;
2436
2437                                 $result = db_query($link, $query);
2438
2439                         } else {
2440                                 // browsing by tag
2441
2442                                 $select_qpart = "SELECT DISTINCT " .
2443                                                                 "date_entered," .
2444                                                                 "guid," .
2445                                                                 "note," .
2446                                                                 "ttrss_entries.id as id," .
2447                                                                 "title," .
2448                                                                 "updated," .
2449                                                                 "unread," .
2450                                                                 "feed_id," .
2451                                                                 "orig_feed_id," .
2452                                                                 "marked," .
2453                                                                 "num_comments, " .
2454                                                                 "comments, " .
2455                                                                 "tag_cache," .
2456                                                                 "label_cache," .
2457                                                                 "link," .
2458                                                                 "last_read," .
2459                                                                 SUBSTRING_FOR_DATE . "(last_read,1,19) as last_read_noms," .
2460                                                                 $since_id_part .
2461                                                                 $vfeed_query_part .
2462                                                                 $content_query_part .
2463                                                                 SUBSTRING_FOR_DATE . "(updated,1,19) as updated_noms," .
2464                                                                 "score ";
2465
2466                                 $feed_kind = "Tags";
2467                                 $all_tags = explode(",", $feed);
2468                                 if ($search_mode == 'any') {
2469                                         $tag_sql = "tag_name in (" . implode(", ", array_map("db_quote", $all_tags)) . ")";
2470                                         $from_qpart = " FROM ttrss_entries,ttrss_user_entries,ttrss_tags ";
2471                                         $where_qpart = " WHERE " .
2472                                                                    "ref_id = ttrss_entries.id AND " .
2473                                                                    "ttrss_user_entries.owner_uid = $owner_uid AND " .
2474                                                                    "post_int_id = int_id AND $tag_sql AND " .
2475                                                                    $view_query_part .
2476                                                                    $search_query_part .
2477                                                                    $query_strategy_part . " ORDER BY $order_by " .
2478                                                                    $limit_query_part;
2479
2480                                 } else {
2481                                         $i = 1;
2482                                         $sub_selects = array();
2483                                         $sub_ands = array();
2484                                         foreach ($all_tags as $term) {
2485                                                 array_push($sub_selects, "(SELECT post_int_id from ttrss_tags WHERE tag_name = " . db_quote($term) . " AND owner_uid = $owner_uid) as A$i");
2486                                                 $i++;
2487                                         }
2488                                         if ($i > 2) {
2489                                                 $x = 1;
2490                                                 $y = 2;
2491                                                 do {
2492                                                         array_push($sub_ands, "A$x.post_int_id = A$y.post_int_id");
2493                                                         $x++;
2494                                                         $y++;
2495                                                 } while ($y < $i);
2496                                         }
2497                                         array_push($sub_ands, "A1.post_int_id = ttrss_user_entries.int_id and ttrss_user_entries.owner_uid = $owner_uid");
2498                                         array_push($sub_ands, "ttrss_user_entries.ref_id = ttrss_entries.id");
2499                                         $from_qpart = " FROM " . implode(", ", $sub_selects) . ", ttrss_user_entries, ttrss_entries";
2500                                         $where_qpart = " WHERE " . implode(" AND ", $sub_ands);
2501                                 }
2502                                 //                              error_log("TAG SQL: " . $tag_sql);
2503                                 // $tag_sql = "tag_name = '$feed'";   DEFAULT way
2504
2505                                 //                              error_log("[". $select_qpart . "][" . $from_qpart . "][" .$where_qpart . "]");
2506                                 $result = db_query($link, $select_qpart . $from_qpart . $where_qpart);
2507                         }
2508
2509                         return array($result, $feed_title, $feed_site_url, $last_error);
2510
2511         }
2512
2513         function sanitize($link, $str, $force_strip_tags = false, $owner = false, $site_url = false) {
2514                 if (!$owner) $owner = $_SESSION["uid"];
2515
2516                 $res = trim($str); if (!$res) return '';
2517
2518                 $config = array('safe' => 1, 'deny_attribute' => 'style, width, height, class, id', 'comment' => 1, 'cdata' => 1);
2519                 $res = htmLawed($res, $config);
2520
2521                 if (get_pref($link, "STRIP_IMAGES", $owner)) {
2522                         $res = preg_replace('/<img[^>]+>/is', '', $res);
2523                 }
2524
2525                 if (strpos($res, "href=") === false)
2526                         $res = rewrite_urls($res);
2527
2528                 $charset_hack = '<head>
2529                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
2530                 </head>';
2531
2532                 $res = trim($res); if (!$res) return '';
2533
2534                 libxml_use_internal_errors(true);
2535
2536                 $doc = new DOMDocument();
2537                 $doc->loadHTML($charset_hack . $res);
2538                 $xpath = new DOMXPath($doc);
2539
2540                 $entries = $xpath->query('(//a[@href]|//img[@src])');
2541                 $br_inserted = 0;
2542
2543                 foreach ($entries as $entry) {
2544
2545                         if ($site_url) {
2546
2547                                 if ($entry->hasAttribute('href'))
2548                                         $entry->setAttribute('href',
2549                                                 rewrite_relative_url($site_url, $entry->getAttribute('href')));
2550
2551                                 if ($entry->hasAttribute('src'))
2552                                         if (preg_match('/^image.php\?i=[a-z0-9]+$/', $entry->getAttribute('src')) == 0)
2553                                                 $entry->setAttribute('src',
2554                                                         rewrite_relative_url($site_url, $entry->getAttribute('src')));
2555                         }
2556
2557                         if (strtolower($entry->nodeName) == "a") {
2558                                 $entry->setAttribute("target", "_blank");
2559                         }
2560
2561                         if (strtolower($entry->nodeName) == "img" && !$br_inserted) {
2562                                 $br = $doc->createElement("br");
2563
2564                                 if ($entry->parentNode->nextSibling) {
2565                                         $entry->parentNode->insertBefore($br, $entry->nextSibling);
2566                                         $br_inserted = 1;
2567                                 }
2568
2569                         }
2570                 }
2571
2572                 $node = $doc->getElementsByTagName('body')->item(0);
2573
2574                 return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
2575         }
2576
2577         /**
2578          * Send by mail a digest of last articles.
2579          *
2580          * @param mixed $link The database connection.
2581          * @param integer $limit The maximum number of articles by digest.
2582          * @return boolean Return false if digests are not enabled.
2583          */
2584         function send_headlines_digests($link, $debug = false) {
2585
2586                 require_once 'lib/phpmailer/class.phpmailer.php';
2587
2588                 $user_limit = 15; // amount of users to process (e.g. emails to send out)
2589                 $limit = 1000; // maximum amount of headlines to include
2590
2591                 if ($debug) _debug("Sending digests, batch of max $user_limit users, headline limit = $limit");
2592
2593                 if (DB_TYPE == "pgsql") {
2594                         $interval_query = "last_digest_sent < NOW() - INTERVAL '1 days'";
2595                 } else if (DB_TYPE == "mysql") {
2596                         $interval_query = "last_digest_sent < DATE_SUB(NOW(), INTERVAL 1 DAY)";
2597                 }
2598
2599                 $result = db_query($link, "SELECT id,email FROM ttrss_users
2600                                 WHERE email != '' AND (last_digest_sent IS NULL OR $interval_query)");
2601
2602                 while ($line = db_fetch_assoc($result)) {
2603
2604                         if (get_pref($link, 'DIGEST_ENABLE', $line['id'], false)) {
2605                                 $preferred_ts = strtotime(get_pref($link, 'DIGEST_PREFERRED_TIME', $line['id'], '00:00'));
2606
2607                                 // try to send digests within 2 hours of preferred time
2608                                 if ($preferred_ts && time() >= $preferred_ts &&
2609                                                 time() - $preferred_ts <= 7200) {
2610
2611                                         if ($debug) print "Sending digest for UID:" . $line['id'] . " - " . $line["email"] . " ... ";
2612
2613                                         $do_catchup = get_pref($link, 'DIGEST_CATCHUP', $line['id'], false);
2614
2615                                         global $tz_offset;
2616
2617                                         // reset tz_offset global to prevent tz cache clash between users
2618                                         $tz_offset = -1;
2619
2620                                         $tuple = prepare_headlines_digest($link, $line["id"], 1, $limit);
2621                                         $digest = $tuple[0];
2622                                         $headlines_count = $tuple[1];
2623                                         $affected_ids = $tuple[2];
2624                                         $digest_text = $tuple[3];
2625
2626                                         if ($headlines_count > 0) {
2627
2628                                                 $mail = new PHPMailer();
2629
2630                                                 $mail->PluginDir = "lib/phpmailer/";
2631                                                 $mail->SetLanguage("en", "lib/phpmailer/language/");
2632
2633                                                 $mail->CharSet = "UTF-8";
2634
2635                                                 $mail->From = SMTP_FROM_ADDRESS;
2636                                                 $mail->FromName = SMTP_FROM_NAME;
2637                                                 $mail->AddAddress($line["email"], $line["login"]);
2638
2639                                                 if (SMTP_HOST) {
2640                                                         $mail->Host = SMTP_HOST;
2641                                                         $mail->Mailer = "smtp";
2642                                                         $mail->SMTPAuth = SMTP_LOGIN != '';
2643                                                         $mail->Username = SMTP_LOGIN;
2644                                                         $mail->Password = SMTP_PASSWORD;
2645                                                 }
2646
2647                                                 $mail->IsHTML(true);
2648                                                 $mail->Subject = DIGEST_SUBJECT;
2649                                                 $mail->Body = $digest;
2650                                                 $mail->AltBody = $digest_text;
2651
2652                                                 $rc = $mail->Send();
2653
2654                                                 if (!$rc && $debug) print "ERROR: " . $mail->ErrorInfo;
2655
2656                                                 if ($debug) print "RC=$rc\n";
2657
2658                                                 if ($rc && $do_catchup) {
2659                                                         if ($debug) print "Marking affected articles as read...\n";
2660                                                         catchupArticlesById($link, $affected_ids, 0, $line["id"]);
2661                                                 }
2662                                         } else {
2663                                                 if ($debug) print "No headlines\n";
2664                                         }
2665
2666                                         db_query($link, "UPDATE ttrss_users SET last_digest_sent = NOW()
2667                                                 WHERE id = " . $line["id"]);
2668
2669                                 }
2670                         }
2671                 }
2672
2673                 if ($debug) _debug("All done.");
2674
2675         }
2676
2677         function prepare_headlines_digest($link, $user_id, $days = 1, $limit = 1000) {
2678
2679                 require_once "lib/MiniTemplator.class.php";
2680
2681                 $tpl = new MiniTemplator;
2682                 $tpl_t = new MiniTemplator;
2683
2684                 $tpl->readTemplateFromFile("templates/digest_template_html.txt");
2685                 $tpl_t->readTemplateFromFile("templates/digest_template.txt");
2686
2687                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $user_id);
2688                 $local_ts = convert_timestamp(time(), 'UTC', $user_tz_string);
2689
2690                 $tpl->setVariable('CUR_DATE', date('Y/m/d', $local_ts));
2691                 $tpl->setVariable('CUR_TIME', date('G:i', $local_ts));
2692
2693                 $tpl_t->setVariable('CUR_DATE', date('Y/m/d', $local_ts));
2694                 $tpl_t->setVariable('CUR_TIME', date('G:i', $local_ts));
2695
2696                 $affected_ids = array();
2697
2698                 if (DB_TYPE == "pgsql") {
2699                         $interval_query = "ttrss_entries.date_updated > NOW() - INTERVAL '$days days'";
2700                 } else if (DB_TYPE == "mysql") {
2701                         $interval_query = "ttrss_entries.date_updated > DATE_SUB(NOW(), INTERVAL $days DAY)";
2702                 }
2703
2704                 $result = db_query($link, "SELECT ttrss_entries.title,
2705                                 ttrss_feeds.title AS feed_title,
2706                                 COALESCE(ttrss_feed_categories.title, '".__('Uncategorized')."') AS cat_title,
2707                                 date_updated,
2708                                 ttrss_user_entries.ref_id,
2709                                 link,
2710                                 score,
2711                                 content,
2712                                 ".SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
2713                         FROM
2714                                 ttrss_user_entries,ttrss_entries,ttrss_feeds
2715                         LEFT JOIN
2716                                 ttrss_feed_categories ON (cat_id = ttrss_feed_categories.id)
2717                         WHERE
2718                                 ref_id = ttrss_entries.id AND feed_id = ttrss_feeds.id
2719                                 AND include_in_digest = true
2720                                 AND $interval_query
2721                                 AND ttrss_user_entries.owner_uid = $user_id
2722                                 AND unread = true
2723                                 AND score >= 0
2724                         ORDER BY ttrss_feed_categories.title, ttrss_feeds.title, score DESC, date_updated DESC
2725                         LIMIT $limit");
2726
2727                 $cur_feed_title = "";
2728
2729                 $headlines_count = db_num_rows($result);
2730
2731                 $headlines = array();
2732
2733                 while ($line = db_fetch_assoc($result)) {
2734                         array_push($headlines, $line);
2735                 }
2736
2737                 for ($i = 0; $i < sizeof($headlines); $i++) {
2738
2739                         $line = $headlines[$i];
2740
2741                         array_push($affected_ids, $line["ref_id"]);
2742
2743                         $updated = make_local_datetime($link, $line['last_updated'], false,
2744                                 $user_id);
2745
2746 /*                      if ($line["score"] != 0) {
2747                                 if ($line["score"] > 0) $line["score"] = '+' . $line["score"];
2748
2749                                 $line["title"] .= " (".$line['score'].")";
2750                         } */
2751
2752                         if (get_pref($link, 'ENABLE_FEED_CATS', $user_id)) {
2753                                 $line['feed_title'] = $line['cat_title'] . " / " . $line['feed_title'];
2754                         }
2755
2756                         $tpl->setVariable('FEED_TITLE', $line["feed_title"]);
2757                         $tpl->setVariable('ARTICLE_TITLE', $line["title"]);
2758                         $tpl->setVariable('ARTICLE_LINK', $line["link"]);
2759                         $tpl->setVariable('ARTICLE_UPDATED', $updated);
2760                         $tpl->setVariable('ARTICLE_EXCERPT',
2761                                 truncate_string(strip_tags($line["content"]), 300));
2762 //                      $tpl->setVariable('ARTICLE_CONTENT',
2763 //                              strip_tags($article_content));
2764
2765                         $tpl->addBlock('article');
2766
2767                         $tpl_t->setVariable('FEED_TITLE', $line["feed_title"]);
2768                         $tpl_t->setVariable('ARTICLE_TITLE', $line["title"]);
2769                         $tpl_t->setVariable('ARTICLE_LINK', $line["link"]);
2770                         $tpl_t->setVariable('ARTICLE_UPDATED', $updated);
2771 //                      $tpl_t->setVariable('ARTICLE_EXCERPT',
2772 //                              truncate_string(strip_tags($line["excerpt"]), 100));
2773
2774                         $tpl_t->addBlock('article');
2775
2776                         if ($headlines[$i]['feed_title'] != $headlines[$i+1]['feed_title']) {
2777                                 $tpl->addBlock('feed');
2778                                 $tpl_t->addBlock('feed');
2779                         }
2780
2781                 }
2782
2783                 $tpl->addBlock('digest');
2784                 $tpl->generateOutputToString($tmp);
2785
2786                 $tpl_t->addBlock('digest');
2787                 $tpl_t->generateOutputToString($tmp_t);
2788
2789                 return array($tmp, $headlines_count, $affected_ids, $tmp_t);
2790         }
2791
2792         function check_for_update($link) {
2793                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2794                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION;
2795
2796                         $version_data = @fetch_file_contents($version_url);
2797
2798                         if ($version_data) {
2799                                 $version_data = json_decode($version_data, true);
2800                                 if ($version_data && $version_data['version']) {
2801
2802                                         if (version_compare(VERSION, $version_data['version']) == -1) {
2803                                                 return $version_data;
2804                                         }
2805                                 }
2806                         }
2807                 }
2808                 return false;
2809         }
2810
2811         function markArticlesById($link, $ids, $cmode) {
2812
2813                 $tmp_ids = array();
2814
2815                 foreach ($ids as $id) {
2816                         array_push($tmp_ids, "ref_id = '$id'");
2817                 }
2818
2819                 $ids_qpart = join(" OR ", $tmp_ids);
2820
2821                 if ($cmode == 0) {
2822                         db_query($link, "UPDATE ttrss_user_entries SET
2823                         marked = false,last_read = NOW()
2824                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2825                 } else if ($cmode == 1) {
2826                         db_query($link, "UPDATE ttrss_user_entries SET
2827                         marked = true
2828                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2829                 } else {
2830                         db_query($link, "UPDATE ttrss_user_entries SET
2831                         marked = NOT marked,last_read = NOW()
2832                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2833                 }
2834         }
2835
2836         function publishArticlesById($link, $ids, $cmode) {
2837
2838                 $tmp_ids = array();
2839
2840                 foreach ($ids as $id) {
2841                         array_push($tmp_ids, "ref_id = '$id'");
2842                 }
2843
2844                 $ids_qpart = join(" OR ", $tmp_ids);
2845
2846                 if ($cmode == 0) {
2847                         db_query($link, "UPDATE ttrss_user_entries SET
2848                         published = false,last_read = NOW()
2849                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2850                 } else if ($cmode == 1) {
2851                         db_query($link, "UPDATE ttrss_user_entries SET
2852                         published = true,last_read = NOW()
2853                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2854                 } else {
2855                         db_query($link, "UPDATE ttrss_user_entries SET
2856                         published = NOT published,last_read = NOW()
2857                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2858                 }
2859
2860                 if (PUBSUBHUBBUB_HUB) {
2861                         $rss_link = get_self_url_prefix() .
2862                                 "/public.php?op=rss&id=-2&key=" .
2863                                 get_feed_access_key($link, -2, false);
2864
2865                         $p = new Publisher(PUBSUBHUBBUB_HUB);
2866
2867                         $pubsub_result = $p->publish_update($rss_link);
2868                 }
2869         }
2870
2871         function catchupArticlesById($link, $ids, $cmode, $owner_uid = false) {
2872
2873                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2874                 if (count($ids) == 0) return;
2875
2876                 $tmp_ids = array();
2877
2878                 foreach ($ids as $id) {
2879                         array_push($tmp_ids, "ref_id = '$id'");
2880                 }
2881
2882                 $ids_qpart = join(" OR ", $tmp_ids);
2883
2884                 if ($cmode == 0) {
2885                         db_query($link, "UPDATE ttrss_user_entries SET
2886                         unread = false,last_read = NOW()
2887                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2888                 } else if ($cmode == 1) {
2889                         db_query($link, "UPDATE ttrss_user_entries SET
2890                         unread = true
2891                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2892                 } else {
2893                         db_query($link, "UPDATE ttrss_user_entries SET
2894                         unread = NOT unread,last_read = NOW()
2895                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2896                 }
2897
2898                 /* update ccache */
2899
2900                 $result = db_query($link, "SELECT DISTINCT feed_id FROM ttrss_user_entries
2901                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2902
2903                 while ($line = db_fetch_assoc($result)) {
2904                         ccache_update($link, $line["feed_id"], $owner_uid);
2905                 }
2906         }
2907
2908         function catchupArticleById($link, $id, $cmode) {
2909
2910                 if ($cmode == 0) {
2911                         db_query($link, "UPDATE ttrss_user_entries SET
2912                         unread = false,last_read = NOW()
2913                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
2914                 } else if ($cmode == 1) {
2915                         db_query($link, "UPDATE ttrss_user_entries SET
2916                         unread = true
2917                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
2918                 } else {
2919                         db_query($link, "UPDATE ttrss_user_entries SET
2920                         unread = NOT unread,last_read = NOW()
2921                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
2922                 }
2923
2924                 $feed_id = getArticleFeed($link, $id);
2925                 ccache_update($link, $feed_id, $_SESSION["uid"]);
2926         }
2927
2928         function make_guid_from_title($title) {
2929                 return preg_replace("/[ \"\',.:;]/", "-",
2930                         mb_strtolower(strip_tags($title), 'utf-8'));
2931         }
2932
2933         function get_article_tags($link, $id, $owner_uid = 0, $tag_cache = false) {
2934
2935                 $a_id = db_escape_string($id);
2936
2937                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2938
2939                 $query = "SELECT DISTINCT tag_name,
2940                         owner_uid as owner FROM
2941                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
2942                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
2943
2944                 $obj_id = md5("TAGS:$owner_uid:$id");
2945                 $tags = array();
2946
2947                 /* check cache first */
2948
2949                 if ($tag_cache === false) {
2950                         $result = db_query($link, "SELECT tag_cache FROM ttrss_user_entries
2951                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2952
2953                         $tag_cache = db_fetch_result($result, 0, "tag_cache");
2954                 }
2955
2956                 if ($tag_cache) {
2957                         $tags = explode(",", $tag_cache);
2958                 } else {
2959
2960                         /* do it the hard way */
2961
2962                         $tmp_result = db_query($link, $query);
2963
2964                         while ($tmp_line = db_fetch_assoc($tmp_result)) {
2965                                 array_push($tags, $tmp_line["tag_name"]);
2966                         }
2967
2968                         /* update the cache */
2969
2970                         $tags_str = db_escape_string(join(",", $tags));
2971
2972                         db_query($link, "UPDATE ttrss_user_entries
2973                                 SET tag_cache = '$tags_str' WHERE ref_id = '$id'
2974                                 AND owner_uid = $owner_uid");
2975                 }
2976
2977                 return $tags;
2978         }
2979
2980         function trim_array($array) {
2981                 $tmp = $array;
2982                 array_walk($tmp, 'trim');
2983                 return $tmp;
2984         }
2985
2986         function tag_is_valid($tag) {
2987                 if ($tag == '') return false;
2988                 if (preg_match("/^[0-9]*$/", $tag)) return false;
2989                 if (mb_strlen($tag) > 250) return false;
2990
2991                 if (function_exists('iconv')) {
2992                         $tag = iconv("utf-8", "utf-8", $tag);
2993                 }
2994
2995                 if (!$tag) return false;
2996
2997                 return true;
2998         }
2999
3000         function render_login_form($link, $form_id = 0) {
3001                 switch ($form_id) {
3002                 case 0:
3003                         require_once "login_form.php";
3004                         break;
3005                 case 1:
3006                         require_once "mobile/login_form.php";
3007                         break;
3008                 }
3009                 exit;
3010         }
3011
3012         // from http://developer.apple.com/internet/safari/faq.html
3013         function no_cache_incantation() {
3014                 header("Expires: Mon, 22 Dec 1980 00:00:00 GMT"); // Happy birthday to me :)
3015                 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
3016                 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); // HTTP/1.1
3017                 header("Cache-Control: post-check=0, pre-check=0", false);
3018                 header("Pragma: no-cache"); // HTTP/1.0
3019         }
3020
3021         function format_warning($msg, $id = "") {
3022                 global $link;
3023                 return "<div class=\"warning\" id=\"$id\">
3024                         <img src=\"".theme_image($link, "images/sign_excl.png")."\">$msg</div>";
3025         }
3026
3027         function format_notice($msg, $id = "") {
3028                 global $link;
3029                 return "<div class=\"notice\" id=\"$id\">
3030                         <img src=\"".theme_image($link, "images/sign_info.png")."\">$msg</div>";
3031         }
3032
3033         function format_error($msg, $id = "") {
3034                 global $link;
3035                 return "<div class=\"error\" id=\"$id\">
3036                         <img src=\"".theme_image($link, "images/sign_excl.png")."\">$msg</div>";
3037         }
3038
3039         function print_notice($msg) {
3040                 return print format_notice($msg);
3041         }
3042
3043         function print_warning($msg) {
3044                 return print format_warning($msg);
3045         }
3046
3047         function print_error($msg) {
3048                 return print format_error($msg);
3049         }
3050
3051
3052         function T_sprintf() {
3053                 $args = func_get_args();
3054                 return vsprintf(__(array_shift($args)), $args);
3055         }
3056
3057         function format_inline_player($link, $url, $ctype) {
3058
3059                 $entry = "";
3060
3061                 if (strpos($ctype, "audio/") === 0) {
3062
3063                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
3064                                 strpos($_SERVER['HTTP_USER_AGENT'], "Chrome") !== false ||
3065                                 strpos($_SERVER['HTTP_USER_AGENT'], "Safari") !== false )) {
3066
3067                                 $id = 'AUDIO-' . uniqid();
3068
3069                                 $entry .= "<audio id=\"$id\"\">
3070                                         <source src=\"$url\"></source>
3071                                         </audio>";
3072
3073                                 $entry .= "<span onclick=\"player(this)\"
3074                                         title=\"".__("Click to play")."\" status=\"0\"
3075                                         class=\"player\" audio-id=\"$id\">".__("Play")."</span>";
3076
3077                         } else {
3078
3079                                 $entry .= "<object type=\"application/x-shockwave-flash\"
3080                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
3081                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
3082                                         <param name=\"movie\"
3083                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
3084                                         </object>";
3085                         }
3086                 }
3087
3088                 $filename = substr($url, strrpos($url, "/")+1);
3089
3090                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3091                         $filename . " (" . $ctype . ")" . "</a>";
3092
3093                 return $entry;
3094         }
3095
3096         function format_article($link, $id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
3097                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3098
3099                 $rv = array();
3100
3101                 $rv['id'] = $id;
3102
3103                 /* we can figure out feed_id from article id anyway, why do we
3104                  * pass feed_id here? let's ignore the argument :( */
3105
3106                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3107                         WHERE ref_id = '$id'");
3108
3109                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
3110
3111                 $rv['feed_id'] = $feed_id;
3112
3113                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
3114
3115                 $result = db_query($link, "SELECT rtl_content, always_display_enclosures, cache_content FROM ttrss_feeds
3116                         WHERE id = '$feed_id' AND owner_uid = $owner_uid");
3117
3118                 if (db_num_rows($result) == 1) {
3119                         $rtl_content = sql_bool_to_bool(db_fetch_result($result, 0, "rtl_content"));
3120                         $always_display_enclosures = sql_bool_to_bool(db_fetch_result($result, 0, "always_display_enclosures"));
3121                         $cache_content = sql_bool_to_bool(db_fetch_result($result, 0, "cache_content"));
3122                 } else {
3123                         $rtl_content = false;
3124                         $always_display_enclosures = false;
3125                         $cache_content = false;
3126                 }
3127
3128                 if ($rtl_content) {
3129                         $rtl_tag = "dir=\"RTL\"";
3130                         $rtl_class = "RTL";
3131                 } else {
3132                         $rtl_tag = "";
3133                         $rtl_class = "";
3134                 }
3135
3136                 if ($mark_as_read) {
3137                         $result = db_query($link, "UPDATE ttrss_user_entries
3138                                 SET unread = false,last_read = NOW()
3139                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
3140
3141                         ccache_update($link, $feed_id, $owner_uid);
3142                 }
3143
3144                 $result = db_query($link, "SELECT id,title,link,content,feed_id,comments,int_id,
3145                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
3146                         (SELECT icon_url FROM ttrss_feeds WHERE id = feed_id) as icon_url,
3147                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
3148                         num_comments,
3149                         tag_cache,
3150                         author,
3151                         orig_feed_id,
3152                         note,
3153                         cached_content
3154                         FROM ttrss_entries,ttrss_user_entries
3155                         WHERE   id = '$id' AND ref_id = id AND owner_uid = $owner_uid");
3156
3157                 if ($result) {
3158
3159                         $line = db_fetch_assoc($result);
3160
3161                         if ($line["icon_url"]) {
3162                                 $feed_icon = "<img src=\"" . $line["icon_url"] . "\">";
3163                         } else {
3164                                 $feed_icon = "&nbsp;";
3165                         }
3166
3167                         $feed_site_url = $line['site_url'];
3168
3169                         $num_comments = $line["num_comments"];
3170                         $entry_comments = "";
3171
3172                         if ($num_comments > 0) {
3173                                 if ($line["comments"]) {
3174                                         $comments_url = htmlspecialchars($line["comments"]);
3175                                 } else {
3176                                         $comments_url = htmlspecialchars($line["link"]);
3177                                 }
3178                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
3179                         } else {
3180                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
3181                                         $entry_comments = "<a target='_blank' href=\"".htmlspecialchars($line["comments"])."\">comments</a>";
3182                                 }
3183                         }
3184
3185                         if ($zoom_mode) {
3186                                 header("Content-Type: text/html");
3187                                 $rv['content'] .= "<html><head>
3188                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
3189                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
3190                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
3191                                         </head><body>";
3192                         }
3193
3194                         $title_escaped = htmlspecialchars($line['title']);
3195
3196                         $rv['content'] .= "<div id=\"PTITLE-$id\" style=\"display : none\">" .
3197                                 truncate_string(strip_tags($line['title']), 15) . "</div>";
3198
3199                         $rv['content'] .= "<div id=\"PTITLE-FULL-$id\" style=\"display : none\">" .
3200                                 strip_tags($line['title']) . "</div>";
3201
3202                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
3203
3204                         $rv['content'] .= "<div onclick=\"return postClicked(event, $id)\"
3205                                 class=\"postHeader\" id=\"POSTHDR-$id\">";
3206
3207                         $entry_author = $line["author"];
3208
3209                         if ($entry_author) {
3210                                 $entry_author = __(" - ") . $entry_author;
3211                         }
3212
3213                         $parsed_updated = make_local_datetime($link, $line["updated"], true,
3214                                 $owner_uid, true);
3215
3216                         $rv['content'] .= "<div class=\"postDate$rtl_class\">$parsed_updated</div>";
3217
3218                         if ($line["link"]) {
3219                                 $rv['content'] .= "<div class='postTitle'><a target='_blank'
3220                                         title=\"".htmlspecialchars($line['title'])."\"
3221                                         href=\"" .
3222                                         htmlspecialchars($line["link"]) . "\">" .
3223                                         $line["title"] .
3224                                         "<span class='author'>$entry_author</span></a></div>";
3225                         } else {
3226                                 $rv['content'] .= "<div class='postTitle'>" . $line["title"] . "$entry_author</div>";
3227                         }
3228
3229                         $tag_cache = $line["tag_cache"];
3230
3231                         if (!$tag_cache)
3232                                 $tags = get_article_tags($link, $id, $owner_uid);
3233                         else
3234                                 $tags = explode(",", $tag_cache);
3235
3236                         $tags_str = format_tags_string($tags, $id);
3237                         $tags_str_full = join(", ", $tags);
3238
3239                         if (!$tags_str_full) $tags_str_full = __("no tags");
3240
3241                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
3242
3243                         $rv['content'] .= "<div class='postTags' style='float : right'>
3244                                 <img src='".theme_image($link, 'images/tag.png')."'
3245                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
3246
3247                         if (!$zoom_mode) {
3248                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
3249                                         <a title=\"".__('Edit tags for this article')."\"
3250                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
3251
3252                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
3253                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
3254                                         position=\"below\">$tags_str_full</div>";
3255
3256                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/art-zoom.png')."\"
3257                                                 class='tagsPic' style=\"cursor : pointer\"
3258                                                 onclick=\"postOpenInNewTab(event, $id)\"
3259                                                 alt='Zoom' title='".__('Open article in new tab')."'>";
3260
3261                                 global $pluginhost;
3262
3263                                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_ARTICLE_BUTTON) as $p) {
3264                                         $rv['content'] .= $p->hook_article_button($line);
3265                                 }
3266
3267                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/digest_checkbox.png')."\"
3268                                                 class='tagsPic' style=\"cursor : pointer\"
3269                                                 onclick=\"closeArticlePanel($id)\"
3270                                                 title='".__('Close article')."'>";
3271
3272                         } else {
3273                                 $tags_str = strip_tags($tags_str);
3274                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
3275                         }
3276                         $rv['content'] .= "</div>";
3277                         $rv['content'] .= "<div clear='both'>$entry_comments</div>";
3278
3279                         if ($line["orig_feed_id"]) {
3280
3281                                 $tmp_result = db_query($link, "SELECT * FROM ttrss_archived_feeds
3282                                         WHERE id = ".$line["orig_feed_id"]);
3283
3284                                 if (db_num_rows($tmp_result) != 0) {
3285
3286                                         $rv['content'] .= "<div clear='both'>";
3287                                         $rv['content'] .= __("Originally from:");
3288
3289                                         $rv['content'] .= "&nbsp;";
3290
3291                                         $tmp_line = db_fetch_assoc($tmp_result);
3292
3293                                         $rv['content'] .= "<a target='_blank'
3294                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
3295                                                 $tmp_line['title'] . "</a>";
3296
3297                                         $rv['content'] .= "&nbsp;";
3298
3299                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3300                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.png'></a>";
3301
3302                                         $rv['content'] .= "</div>";
3303                                 }
3304                         }
3305
3306                         $rv['content'] .= "</div>";
3307
3308                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3309                                 if ($line['note']) {
3310                                         $rv['content'] .= format_article_note($id, $line['note']);
3311                                 }
3312                         $rv['content'] .= "</div>";
3313
3314                         $rv['content'] .= "<div class=\"postIcon\">" .
3315                                 "<a target=\"_blank\" title=\"".__("Visit the website")."\"$
3316                                 href=\"".htmlspecialchars($feed_site_url)."\">".
3317                                 $feed_icon . "</a></div>";
3318
3319                         $rv['content'] .= "<div class=\"postContent\">";
3320
3321                         // N-grams
3322
3323                         if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_RELATED_THRESHOLD')) {
3324
3325                                 $ngram_result = db_query($link, "SELECT id,title FROM
3326                                                 ttrss_entries,ttrss_user_entries
3327                                         WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
3328                                                 AND similarity(title, '$title_escaped') >= "._NGRAM_TITLE_RELATED_THRESHOLD."
3329                                                 AND title != '$title_escaped'
3330                                                 AND owner_uid = $owner_uid");
3331
3332                                 if (db_num_rows($ngram_result) > 0) {
3333                                         $rv['content'] .= "<div dojoType=\"dijit.form.DropDownButton\">".
3334                                                 "<span>" . __('Related')."</span>";
3335                                         $rv['content'] .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3336
3337                                         while ($nline = db_fetch_assoc($ngram_result)) {
3338                                                 $rv['content'] .= "<div onclick=\"hlOpenInNewTab(null,".$nline['id'].")\"
3339                                                         dojoType=\"dijit.MenuItem\">".$nline['title']."</div>";
3340
3341                                         }
3342                                         $rv['content'] .= "</div></div><br/";
3343                                 }
3344                         }
3345
3346                         if ($cache_content && $line["cached_content"] != "") {
3347                                 $line["content"] =& $line["cached_content"];
3348                         }
3349
3350                         $article_content = sanitize($link, $line["content"], false, $owner_uid,
3351                                 $feed_site_url);
3352
3353                         $rv['content'] .= $article_content;
3354
3355                         $rv['content'] .= format_article_enclosures($link, $id,
3356                                 $always_display_enclosures, $article_content);
3357
3358                         $rv['content'] .= "</div>";
3359
3360                         $rv['content'] .= "</div>";
3361
3362                 }
3363
3364                 if ($zoom_mode) {
3365                         $rv['content'] .= "
3366                                 <div style=\"text-align : center\">
3367                                 <button onclick=\"return window.close()\">".
3368                                         __("Close this window")."</button></div>";
3369                         $rv['content'] .= "</body></html>";
3370                 }
3371
3372                 return $rv;
3373
3374         }
3375
3376         function print_checkpoint($n, $s) {
3377                 $ts = getmicrotime();
3378                 echo sprintf("<!-- CP[$n] %.4f seconds -->", $ts - $s);
3379                 return $ts;
3380         }
3381
3382         function sanitize_tag($tag) {
3383                 $tag = trim($tag);
3384
3385                 $tag = mb_strtolower($tag, 'utf-8');
3386
3387                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3388
3389 //              $tag = str_replace('"', "", $tag);
3390 //              $tag = str_replace("+", " ", $tag);
3391                 $tag = str_replace("technorati tag: ", "", $tag);
3392
3393                 return $tag;
3394         }
3395
3396         function get_self_url_prefix() {
3397                 if (strrpos(SELF_URL_PATH, "/") === strlen(SELF_URL_PATH)-1) {
3398                         return substr(SELF_URL_PATH, 0, strlen(SELF_URL_PATH)-1);
3399                 } else {
3400                         return SELF_URL_PATH;
3401                 }
3402         }
3403
3404         function opml_publish_url($link){
3405
3406                 $url_path = get_self_url_prefix();
3407                 $url_path .= "/opml.php?op=publish&key=" .
3408                         get_feed_access_key($link, 'OPML:Publish', false, $_SESSION["uid"]);
3409
3410                 return $url_path;
3411         }
3412
3413         /**
3414          * Purge a feed contents, marked articles excepted.
3415          *
3416          * @param mixed $link The database connection.
3417          * @param integer $id The id of the feed to purge.
3418          * @return void
3419          */
3420         function clear_feed_articles($link, $id) {
3421
3422                 if ($id != 0) {
3423                         $result = db_query($link, "DELETE FROM ttrss_user_entries
3424                         WHERE feed_id = '$id' AND marked = false AND owner_uid = " . $_SESSION["uid"]);
3425                 } else {
3426                         $result = db_query($link, "DELETE FROM ttrss_user_entries
3427                         WHERE feed_id IS NULL AND marked = false AND owner_uid = " . $_SESSION["uid"]);
3428                 }
3429
3430                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
3431                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
3432
3433                 ccache_update($link, $id, $_SESSION['uid']);
3434         } // function clear_feed_articles
3435
3436         /**
3437          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3438          *
3439          * @return string The Mozilla Firefox feed adding URL.
3440          */
3441         function add_feed_url() {
3442                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3443
3444                 $url_path = get_self_url_prefix() .
3445                         "/public.php?op=subscribe&feed_url=%s";
3446                 return $url_path;
3447         } // function add_feed_url
3448
3449         function encrypt_password($pass, $salt = '', $mode2 = false) {
3450                 if ($salt && $mode2) {
3451                         return "MODE2:" . hash('sha256', $salt . $pass);
3452                 } else if ($salt) {
3453                         return "SHA1X:" . sha1("$salt:$pass");
3454                 } else {
3455                         return "SHA1:" . sha1($pass);
3456                 }
3457         } // function encrypt_password
3458
3459         function load_filters($link, $feed_id, $owner_uid, $action_id = false) {
3460                 $filters = array();
3461
3462                 $cat_id = (int)getFeedCategory($link, $feed_id);
3463
3464                 $result = db_query($link, "SELECT * FROM ttrss_filters2 WHERE
3465                         owner_uid = $owner_uid AND enabled = true");
3466
3467                 $check_cats = join(",", array_merge(
3468                         getParentCategories($link, $cat_id, $owner_uid),
3469                         array($cat_id)));
3470
3471                 while ($line = db_fetch_assoc($result)) {
3472                         $filter_id = $line["id"];
3473
3474                         $result2 = db_query($link, "SELECT
3475                                 r.reg_exp, r.feed_id, r.cat_id, r.cat_filter, t.name AS type_name
3476                                 FROM ttrss_filters2_rules AS r,
3477                                 ttrss_filter_types AS t
3478                                 WHERE
3479                                         (cat_id IS NULL OR cat_id IN ($check_cats)) AND
3480                                         (feed_id IS NULL OR feed_id = '$feed_id') AND
3481                                         filter_type = t.id AND filter_id = '$filter_id'");
3482
3483                         $rules = array();
3484                         $actions = array();
3485
3486                         while ($rule_line = db_fetch_assoc($result2)) {
3487 #                               print_r($rule_line);
3488
3489                                 $rule = array();
3490                                 $rule["reg_exp"] = $rule_line["reg_exp"];
3491                                 $rule["type"] = $rule_line["type_name"];
3492
3493                                 array_push($rules, $rule);
3494                         }
3495
3496                         $result2 = db_query($link, "SELECT a.action_param,t.name AS type_name
3497                                 FROM ttrss_filters2_actions AS a,
3498                                 ttrss_filter_actions AS t
3499                                 WHERE
3500                                         action_id = t.id AND filter_id = '$filter_id'");
3501
3502                         while ($action_line = db_fetch_assoc($result2)) {
3503 #                               print_r($action_line);
3504
3505                                 $action = array();
3506                                 $action["type"] = $action_line["type_name"];
3507                                 $action["param"] = $action_line["action_param"];
3508
3509                                 array_push($actions, $action);
3510                         }
3511
3512
3513                         $filter = array();
3514                         $filter["match_any_rule"] = sql_bool_to_bool($line["match_any_rule"]);
3515                         $filter["rules"] = $rules;
3516                         $filter["actions"] = $actions;
3517
3518                         if (count($rules) > 0 && count($actions) > 0) {
3519                                 array_push($filters, $filter);
3520                         }
3521                 }
3522
3523                 return $filters;
3524         }
3525
3526         function get_score_pic($score) {
3527                 if ($score > 100) {
3528                         return "score_high.png";
3529                 } else if ($score > 0) {
3530                         return "score_half_high.png";
3531                 } else if ($score < -100) {
3532                         return "score_low.png";
3533                 } else if ($score < 0) {
3534                         return "score_half_low.png";
3535                 } else {
3536                         return "score_neutral.png";
3537                 }
3538         }
3539
3540         function feed_has_icon($id) {
3541                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3542         }
3543
3544         function init_connection($link) {
3545                 if ($link) {
3546
3547                         if (DB_TYPE == "pgsql") {
3548                                 pg_query($link, "set client_encoding = 'UTF-8'");
3549                                 pg_set_client_encoding("UNICODE");
3550                                 pg_query($link, "set datestyle = 'ISO, european'");
3551                                 pg_query($link, "set TIME ZONE 0");
3552                         } else {
3553                                 db_query($link, "SET time_zone = '+0:0'");
3554
3555                                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
3556                                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
3557                                 }
3558                         }
3559
3560                         global $pluginhost;
3561
3562                         $pluginhost = new PluginHost($link);
3563                         $pluginhost->load(PLUGINS);
3564
3565                         return true;
3566                 } else {
3567                         print "Unable to connect to database:" . db_last_error();
3568                         return false;
3569                 }
3570         }
3571
3572         /* function ccache_zero($link, $feed_id, $owner_uid) {
3573                 db_query($link, "UPDATE ttrss_counters_cache SET
3574                         value = 0, updated = NOW() WHERE
3575                         feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3576         } */
3577
3578         function ccache_zero_all($link, $owner_uid) {
3579                 db_query($link, "UPDATE ttrss_counters_cache SET
3580                         value = 0 WHERE owner_uid = '$owner_uid'");
3581
3582                 db_query($link, "UPDATE ttrss_cat_counters_cache SET
3583                         value = 0 WHERE owner_uid = '$owner_uid'");
3584         }
3585
3586         function ccache_remove($link, $feed_id, $owner_uid, $is_cat = false) {
3587
3588                 if (!$is_cat) {
3589                         $table = "ttrss_counters_cache";
3590                 } else {
3591                         $table = "ttrss_cat_counters_cache";
3592                 }
3593
3594                 db_query($link, "DELETE FROM $table WHERE
3595                         feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3596
3597         }
3598
3599         function ccache_update_all($link, $owner_uid) {
3600
3601                 if (get_pref($link, 'ENABLE_FEED_CATS', $owner_uid)) {
3602
3603                         $result = db_query($link, "SELECT feed_id FROM ttrss_cat_counters_cache
3604                                 WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
3605
3606                         while ($line = db_fetch_assoc($result)) {
3607                                 ccache_update($link, $line["feed_id"], $owner_uid, true);
3608                         }
3609
3610                         /* We have to manually include category 0 */
3611
3612                         ccache_update($link, 0, $owner_uid, true);
3613
3614                 } else {
3615                         $result = db_query($link, "SELECT feed_id FROM ttrss_counters_cache
3616                                 WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
3617
3618                         while ($line = db_fetch_assoc($result)) {
3619                                 print ccache_update($link, $line["feed_id"], $owner_uid);
3620
3621                         }
3622
3623                 }
3624         }
3625
3626         function ccache_find($link, $feed_id, $owner_uid, $is_cat = false,
3627                 $no_update = false) {
3628
3629                 if (!is_numeric($feed_id)) return;
3630
3631                 if (!$is_cat) {
3632                         $table = "ttrss_counters_cache";
3633                         if ($feed_id > 0) {
3634                                 $tmp_result = db_query($link, "SELECT owner_uid FROM ttrss_feeds
3635                                         WHERE id = '$feed_id'");
3636                                 $owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
3637                         }
3638                 } else {
3639                         $table = "ttrss_cat_counters_cache";
3640                 }
3641
3642                 if (DB_TYPE == "pgsql") {
3643                         $date_qpart = "updated > NOW() - INTERVAL '15 minutes'";
3644                 } else if (DB_TYPE == "mysql") {
3645                         $date_qpart = "updated > DATE_SUB(NOW(), INTERVAL 15 MINUTE)";
3646                 }
3647
3648                 $result = db_query($link, "SELECT value FROM $table
3649                         WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id'
3650                         LIMIT 1");
3651
3652                 if (db_num_rows($result) == 1) {
3653                         return db_fetch_result($result, 0, "value");
3654                 } else {
3655                         if ($no_update) {
3656                                 return -1;
3657                         } else {
3658                                 return ccache_update($link, $feed_id, $owner_uid, $is_cat);
3659                         }
3660                 }
3661
3662         }
3663
3664         function ccache_update($link, $feed_id, $owner_uid, $is_cat = false,
3665                 $update_pcat = true) {
3666
3667                 if (!is_numeric($feed_id)) return;
3668
3669                 if (!$is_cat && $feed_id > 0) {
3670                         $tmp_result = db_query($link, "SELECT owner_uid FROM ttrss_feeds
3671                                 WHERE id = '$feed_id'");
3672                         $owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
3673                 }
3674
3675                 $prev_unread = ccache_find($link, $feed_id, $owner_uid, $is_cat, true);
3676
3677                 /* When updating a label, all we need to do is recalculate feed counters
3678                  * because labels are not cached */
3679
3680                 if ($feed_id < 0) {
3681                         ccache_update_all($link, $owner_uid);
3682                         return;
3683                 }
3684
3685                 if (!$is_cat) {
3686                         $table = "ttrss_counters_cache";
3687                 } else {
3688                         $table = "ttrss_cat_counters_cache";
3689                 }
3690
3691                 if ($is_cat && $feed_id >= 0) {
3692                         if ($feed_id != 0) {
3693                                 $cat_qpart = "cat_id = '$feed_id'";
3694                         } else {
3695                                 $cat_qpart = "cat_id IS NULL";
3696                         }
3697
3698                         /* Recalculate counters for child feeds */
3699
3700                         $result = db_query($link, "SELECT id FROM ttrss_feeds
3701                                                 WHERE owner_uid = '$owner_uid' AND $cat_qpart");
3702
3703                         while ($line = db_fetch_assoc($result)) {
3704                                 ccache_update($link, $line["id"], $owner_uid, false, false);
3705                         }
3706
3707                         $result = db_query($link, "SELECT SUM(value) AS sv
3708                                 FROM ttrss_counters_cache, ttrss_feeds
3709                                 WHERE id = feed_id AND $cat_qpart AND
3710                                 ttrss_feeds.owner_uid = '$owner_uid'");
3711
3712                         $unread = (int) db_fetch_result($result, 0, "sv");
3713
3714                 } else {
3715                         $unread = (int) getFeedArticles($link, $feed_id, $is_cat, true, $owner_uid);
3716                 }
3717
3718                 db_query($link, "BEGIN");
3719
3720                 $result = db_query($link, "SELECT feed_id FROM $table
3721                         WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id' LIMIT 1");
3722
3723                 if (db_num_rows($result) == 1) {
3724                         db_query($link, "UPDATE $table SET
3725                                 value = '$unread', updated = NOW() WHERE
3726                                 feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3727
3728                 } else {
3729                         db_query($link, "INSERT INTO $table
3730                                 (feed_id, value, owner_uid, updated)
3731                                 VALUES
3732                                 ($feed_id, $unread, $owner_uid, NOW())");
3733                 }
3734
3735                 db_query($link, "COMMIT");
3736
3737                 if ($feed_id > 0 && $prev_unread != $unread) {
3738
3739                         if (!$is_cat) {
3740
3741                                 /* Update parent category */
3742
3743                                 if ($update_pcat) {
3744
3745                                         $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
3746                                                 WHERE owner_uid = '$owner_uid' AND id = '$feed_id'");
3747
3748                                         $cat_id = (int) db_fetch_result($result, 0, "cat_id");
3749
3750                                         ccache_update($link, $cat_id, $owner_uid, true);
3751
3752                                 }
3753                         }
3754                 } else if ($feed_id < 0) {
3755                         ccache_update_all($link, $owner_uid);
3756                 }
3757
3758                 return $unread;
3759         }
3760
3761         /* function ccache_cleanup($link, $owner_uid) {
3762
3763                 if (DB_TYPE == "pgsql") {
3764                         db_query($link, "DELETE FROM ttrss_counters_cache AS c1 WHERE
3765                                 (SELECT count(*) FROM ttrss_counters_cache AS c2
3766                                         WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
3767                                         AND owner_uid = '$owner_uid'");
3768
3769                         db_query($link, "DELETE FROM ttrss_cat_counters_cache AS c1 WHERE
3770                                 (SELECT count(*) FROM ttrss_cat_counters_cache AS c2
3771                                         WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
3772                                         AND owner_uid = '$owner_uid'");
3773                 } else {
3774                         db_query($link, "DELETE c1 FROM
3775                                         ttrss_counters_cache AS c1,
3776                                         ttrss_counters_cache AS c2
3777                                 WHERE
3778                                         c1.owner_uid = '$owner_uid' AND
3779                                         c1.owner_uid = c2.owner_uid AND
3780                                         c1.feed_id = c2.feed_id");
3781
3782                         db_query($link, "DELETE c1 FROM
3783                                         ttrss_cat_counters_cache AS c1,
3784                                         ttrss_cat_counters_cache AS c2
3785                                 WHERE
3786                                         c1.owner_uid = '$owner_uid' AND
3787                                         c1.owner_uid = c2.owner_uid AND
3788                                         c1.feed_id = c2.feed_id");
3789
3790                 }
3791         } */
3792
3793         function label_find_id($link, $label, $owner_uid) {
3794                 $result = db_query($link,
3795                         "SELECT id FROM ttrss_labels2 WHERE caption = '$label'
3796                                 AND owner_uid = '$owner_uid' LIMIT 1");
3797
3798                 if (db_num_rows($result) == 1) {
3799                         return db_fetch_result($result, 0, "id");
3800                 } else {
3801                         return 0;
3802                 }
3803         }
3804
3805         function get_article_labels($link, $id, $owner_uid = false) {
3806                 $rv = array();
3807
3808                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3809
3810                 $result = db_query($link, "SELECT label_cache FROM
3811                         ttrss_user_entries WHERE ref_id = '$id' AND owner_uid = " .
3812                         $owner_uid);
3813
3814                 if (db_num_rows($result) > 0) {
3815                         $label_cache = db_fetch_result($result, 0, "label_cache");
3816
3817                         if ($label_cache) {
3818                                 $label_cache = json_decode($label_cache, true);
3819
3820                                 if ($label_cache["no-labels"] == 1)
3821                                         return $rv;
3822                                 else
3823                                         return $label_cache;
3824                         }
3825                 }
3826
3827                 $result = db_query($link,
3828                         "SELECT DISTINCT label_id,caption,fg_color,bg_color
3829                                 FROM ttrss_labels2, ttrss_user_labels2
3830                         WHERE id = label_id
3831                                 AND article_id = '$id'
3832                                 AND owner_uid = ". $owner_uid . "
3833                         ORDER BY caption");
3834
3835                 while ($line = db_fetch_assoc($result)) {
3836                         $rk = array($line["label_id"], $line["caption"], $line["fg_color"],
3837                                 $line["bg_color"]);
3838                         array_push($rv, $rk);
3839                 }
3840
3841                 if (count($rv) > 0)
3842                         label_update_cache($link, $owner_uid, $id, $rv);
3843                 else
3844                         label_update_cache($link, $owner_uid, $id, array("no-labels" => 1));
3845
3846                 return $rv;
3847         }
3848
3849
3850         function label_find_caption($link, $label, $owner_uid) {
3851                 $result = db_query($link,
3852                         "SELECT caption FROM ttrss_labels2 WHERE id = '$label'
3853                                 AND owner_uid = '$owner_uid' LIMIT 1");
3854
3855                 if (db_num_rows($result) == 1) {
3856                         return db_fetch_result($result, 0, "caption");
3857                 } else {
3858                         return "";
3859                 }
3860         }
3861
3862         function get_all_labels($link, $owner_uid) {
3863                 $rv = array();
3864
3865                 $result = db_query($link, "SELECT fg_color, bg_color, caption FROM ttrss_labels2 WHERE owner_uid = " . $owner_uid);
3866
3867                 while ($line = db_fetch_assoc($result)) {
3868                         array_push($rv, $line);
3869                 }
3870
3871                 return $rv;
3872         }
3873
3874         function label_update_cache($link, $owner_uid, $id, $labels = false, $force = false) {
3875
3876                 if ($force)
3877                         label_clear_cache($link, $id);
3878
3879                 if (!$labels)
3880                         $labels = get_article_labels($link, $id);
3881
3882                 $labels = db_escape_string(json_encode($labels));
3883
3884                 db_query($link, "UPDATE ttrss_user_entries SET
3885                         label_cache = '$labels' WHERE ref_id = '$id' AND  owner_uid = '$owner_uid'");
3886
3887         }
3888
3889         function label_clear_cache($link, $id) {
3890
3891                 db_query($link, "UPDATE ttrss_user_entries SET
3892                         label_cache = '' WHERE ref_id = '$id'");
3893
3894         }
3895
3896         function label_remove_article($link, $id, $label, $owner_uid) {
3897
3898                 $label_id = label_find_id($link, $label, $owner_uid);
3899
3900                 if (!$label_id) return;
3901
3902                 $result = db_query($link,
3903                         "DELETE FROM ttrss_user_labels2
3904                         WHERE
3905                                 label_id = '$label_id' AND
3906                                 article_id = '$id'");
3907
3908                 label_clear_cache($link, $id);
3909         }
3910
3911         function label_add_article($link, $id, $label, $owner_uid) {
3912
3913                 $label_id = label_find_id($link, $label, $owner_uid);
3914
3915                 if (!$label_id) return;
3916
3917                 $result = db_query($link,
3918                         "SELECT
3919                                 article_id FROM ttrss_labels2, ttrss_user_labels2
3920                         WHERE
3921                                 label_id = id AND
3922                                 label_id = '$label_id' AND
3923                                 article_id = '$id' AND owner_uid = '$owner_uid'
3924                         LIMIT 1");
3925
3926                 if (db_num_rows($result) == 0) {
3927                         db_query($link, "INSERT INTO ttrss_user_labels2
3928                                 (label_id, article_id) VALUES ('$label_id', '$id')");
3929                 }
3930
3931                 label_clear_cache($link, $id);
3932
3933         }
3934
3935         function label_remove($link, $id, $owner_uid) {
3936                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3937
3938                 db_query($link, "BEGIN");
3939
3940                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
3941                         WHERE id = '$id'");
3942
3943                 $caption = db_fetch_result($result, 0, "caption");
3944
3945                 $result = db_query($link, "DELETE FROM ttrss_labels2 WHERE id = '$id'
3946                         AND owner_uid = " . $owner_uid);
3947
3948                 if (db_affected_rows($link, $result) != 0 && $caption) {
3949
3950                         /* Remove access key for the label */
3951
3952                         $ext_id = -11 - $id;
3953
3954                         db_query($link, "DELETE FROM ttrss_access_keys WHERE
3955                                 feed_id = '$ext_id' AND owner_uid = $owner_uid");
3956
3957                         /* Disable filters that reference label being removed */
3958
3959                         db_query($link, "UPDATE ttrss_filters SET
3960                                 enabled = false WHERE action_param = '$caption'
3961                                         AND action_id = 7
3962                                         AND owner_uid = " . $owner_uid);
3963
3964                         /* Remove cached data */
3965
3966                         db_query($link, "UPDATE ttrss_user_entries SET label_cache = ''
3967                                 WHERE label_cache LIKE '%$caption%' AND owner_uid = " . $owner_uid);
3968
3969                 }
3970
3971                 db_query($link, "COMMIT");
3972         }
3973
3974         function label_create($link, $caption, $fg_color = '', $bg_color = '', $owner_uid) {
3975
3976                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
3977
3978                 db_query($link, "BEGIN");
3979
3980                 $result = false;
3981
3982                 $result = db_query($link, "SELECT id FROM ttrss_labels2
3983                         WHERE caption = '$caption' AND owner_uid = $owner_uid");
3984
3985                 if (db_num_rows($result) == 0) {
3986                         $result = db_query($link,
3987                                 "INSERT INTO ttrss_labels2 (caption,owner_uid,fg_color,bg_color)
3988                                         VALUES ('$caption', '$owner_uid', '$fg_color', '$bg_color')");
3989
3990                         $result = db_affected_rows($link, $result) != 0;
3991                 }
3992
3993                 db_query($link, "COMMIT");
3994
3995                 return $result;
3996         }
3997
3998         function format_tags_string($tags, $id) {
3999
4000                 $tags_str = "";
4001                 $tags_nolinks_str = "";
4002
4003                 $num_tags = 0;
4004
4005                 $tag_limit = 6;
4006
4007                 $formatted_tags = array();
4008
4009                 foreach ($tags as $tag) {
4010                         $num_tags++;
4011                         $tag_escaped = str_replace("'", "\\'", $tag);
4012
4013                         if (mb_strlen($tag) > 30) {
4014                                 $tag = truncate_string($tag, 30);
4015                         }
4016
4017                         $tag_str = "<a href=\"javascript:viewfeed('$tag_escaped')\">$tag</a>";
4018
4019                         array_push($formatted_tags, $tag_str);
4020
4021                         $tmp_tags_str = implode(", ", $formatted_tags);
4022
4023                         if ($num_tags == $tag_limit || mb_strlen($tmp_tags_str) > 150) {
4024                                 break;
4025                         }
4026                 }
4027
4028                 $tags_str = implode(", ", $formatted_tags);
4029
4030                 if ($num_tags < count($tags)) {
4031                         $tags_str .= ", &hellip;";
4032                 }
4033
4034                 if ($num_tags == 0) {
4035                         $tags_str = __("no tags");
4036                 }
4037
4038                 return $tags_str;
4039
4040         }
4041
4042         function format_article_labels($labels, $id) {
4043
4044                 $labels_str = "";
4045
4046                 foreach ($labels as $l) {
4047                         $labels_str .= sprintf("<span class='hlLabelRef'
4048                                 style='color : %s; background-color : %s'>%s</span>",
4049                                         $l[2], $l[3], $l[1]);
4050                         }
4051
4052                 return $labels_str;
4053
4054         }
4055
4056         function format_article_note($id, $note) {
4057
4058                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
4059                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
4060                         __('(edit note)')."</div>$note</div>";
4061
4062                 return $str;
4063         }
4064
4065         function toggle_collapse_cat($link, $cat_id, $mode) {
4066                 if ($cat_id > 0) {
4067                         $mode = bool_to_sql_bool($mode);
4068
4069                         db_query($link, "UPDATE ttrss_feed_categories SET
4070                                 collapsed = $mode WHERE id = '$cat_id' AND owner_uid = " .
4071                                 $_SESSION["uid"]);
4072                 } else {
4073                         $pref_name = '';
4074
4075                         switch ($cat_id) {
4076                         case -1:
4077                                 $pref_name = '_COLLAPSED_SPECIAL';
4078                                 break;
4079                         case -2:
4080                                 $pref_name = '_COLLAPSED_LABELS';
4081                                 break;
4082                         case 0:
4083                                 $pref_name = '_COLLAPSED_UNCAT';
4084                                 break;
4085                         }
4086
4087                         if ($pref_name) {
4088                                 if ($mode) {
4089                                         set_pref($link, $pref_name, 'true');
4090                                 } else {
4091                                         set_pref($link, $pref_name, 'false');
4092                                 }
4093                         }
4094                 }
4095         }
4096
4097         function remove_feed($link, $id, $owner_uid) {
4098
4099                 if ($id > 0) {
4100
4101                         /* save starred articles in Archived feed */
4102
4103                         db_query($link, "BEGIN");
4104
4105                         /* prepare feed if necessary */
4106
4107                         $result = db_query($link, "SELECT id FROM ttrss_archived_feeds
4108                                 WHERE id = '$id'");
4109
4110                         if (db_num_rows($result) == 0) {
4111                                 db_query($link, "INSERT INTO ttrss_archived_feeds
4112                                         (id, owner_uid, title, feed_url, site_url)
4113                                 SELECT id, owner_uid, title, feed_url, site_url from ttrss_feeds
4114                                 WHERE id = '$id'");
4115                         }
4116
4117                         db_query($link, "UPDATE ttrss_user_entries SET feed_id = NULL,
4118                                 orig_feed_id = '$id' WHERE feed_id = '$id' AND
4119                                         marked = true AND owner_uid = $owner_uid");
4120
4121                         /* Remove access key for the feed */
4122
4123                         db_query($link, "DELETE FROM ttrss_access_keys WHERE
4124                                 feed_id = '$id' AND owner_uid = $owner_uid");
4125
4126                         /* remove the feed */
4127
4128                         db_query($link, "DELETE FROM ttrss_feeds
4129                                         WHERE id = '$id' AND owner_uid = $owner_uid");
4130
4131                         db_query($link, "COMMIT");
4132
4133                         if (file_exists(ICONS_DIR . "/$id.ico")) {
4134                                 unlink(ICONS_DIR . "/$id.ico");
4135                         }
4136
4137                         ccache_remove($link, $id, $owner_uid);
4138
4139                 } else {
4140                         label_remove($link, -11-$id, $owner_uid);
4141                         ccache_remove($link, -11-$id, $owner_uid);
4142                 }
4143         }
4144
4145         function get_feed_category($link, $feed_cat, $parent_cat_id = false) {
4146                 if ($parent_cat_id) {
4147                         $parent_qpart = "parent_cat = '$parent_cat_id'";
4148                         $parent_insert = "'$parent_cat_id'";
4149                 } else {
4150                         $parent_qpart = "parent_cat IS NULL";
4151                         $parent_insert = "NULL";
4152                 }
4153
4154                 $result = db_query($link,
4155                         "SELECT id FROM ttrss_feed_categories
4156                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
4157
4158                 if (db_num_rows($result) == 0) {
4159                         return false;
4160                 } else {
4161                         return db_fetch_result($result, 0, "id");
4162                 }
4163         }
4164
4165         function add_feed_category($link, $feed_cat, $parent_cat_id = false) {
4166
4167                 if (!$feed_cat) return false;
4168
4169                 db_query($link, "BEGIN");
4170
4171                 if ($parent_cat_id) {
4172                         $parent_qpart = "parent_cat = '$parent_cat_id'";
4173                         $parent_insert = "'$parent_cat_id'";
4174                 } else {
4175                         $parent_qpart = "parent_cat IS NULL";
4176                         $parent_insert = "NULL";
4177                 }
4178
4179                 $result = db_query($link,
4180                         "SELECT id FROM ttrss_feed_categories
4181                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
4182
4183                 if (db_num_rows($result) == 0) {
4184
4185                         $result = db_query($link,
4186                                 "INSERT INTO ttrss_feed_categories (owner_uid,title,parent_cat)
4187                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat', $parent_insert)");
4188
4189                         db_query($link, "COMMIT");
4190
4191                         return true;
4192                 }
4193
4194                 return false;
4195         }
4196
4197         function remove_feed_category($link, $id, $owner_uid) {
4198
4199                 db_query($link, "DELETE FROM ttrss_feed_categories
4200                         WHERE id = '$id' AND owner_uid = $owner_uid");
4201
4202                 ccache_remove($link, $id, $owner_uid, true);
4203         }
4204
4205         function archive_article($link, $id, $owner_uid) {
4206                 db_query($link, "BEGIN");
4207
4208                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
4209                         WHERE ref_id = '$id' AND owner_uid = $owner_uid");
4210
4211                 if (db_num_rows($result) != 0) {
4212
4213                         /* prepare the archived table */
4214
4215                         $feed_id = (int) db_fetch_result($result, 0, "feed_id");
4216
4217                         if ($feed_id) {
4218                                 $result = db_query($link, "SELECT id FROM ttrss_archived_feeds
4219                                         WHERE id = '$feed_id'");
4220
4221                                 if (db_num_rows($result) == 0) {
4222                                         db_query($link, "INSERT INTO ttrss_archived_feeds
4223                                                 (id, owner_uid, title, feed_url, site_url)
4224                                         SELECT id, owner_uid, title, feed_url, site_url from ttrss_feeds
4225                                         WHERE id = '$feed_id'");
4226                                 }
4227
4228                                 db_query($link, "UPDATE ttrss_user_entries
4229                                         SET orig_feed_id = feed_id, feed_id = NULL
4230                                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
4231                         }
4232                 }
4233
4234                 db_query($link, "COMMIT");
4235         }
4236
4237         function getArticleFeed($link, $id) {
4238                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
4239                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
4240
4241                 if (db_num_rows($result) != 0) {
4242                         return db_fetch_result($result, 0, "feed_id");
4243                 } else {
4244                         return 0;
4245                 }
4246         }
4247
4248         /**
4249          * Fixes incomplete URLs by prepending "http://".
4250          * Also replaces feed:// with http://, and
4251          * prepends a trailing slash if the url is a domain name only.
4252          *
4253          * @param string $url Possibly incomplete URL
4254          *
4255          * @return string Fixed URL.
4256          */
4257         function fix_url($url) {
4258                 if (strpos($url, '://') === false) {
4259                         $url = 'http://' . $url;
4260                 } else if (substr($url, 0, 5) == 'feed:') {
4261                         $url = 'http:' . substr($url, 5);
4262                 }
4263
4264                 //prepend slash if the URL has no slash in it
4265                 // "http://www.example" -> "http://www.example/"
4266                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
4267                         $url .= '/';
4268                 }
4269
4270                 if ($url != "http:///")
4271                         return $url;
4272                 else
4273                         return '';
4274         }
4275
4276         function validate_feed_url($url) {
4277                 $parts = parse_url($url);
4278
4279                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
4280
4281         }
4282
4283         function get_article_enclosures($link, $id) {
4284
4285                 $query = "SELECT * FROM ttrss_enclosures
4286                         WHERE post_id = '$id' AND content_url != ''";
4287
4288                 $rv = array();
4289
4290                 $result = db_query($link, $query);
4291
4292                 if (db_num_rows($result) > 0) {
4293                         while ($line = db_fetch_assoc($result)) {
4294                                 array_push($rv, $line);
4295                         }
4296                 }
4297
4298                 return $rv;
4299         }
4300
4301         function api_get_feeds($link, $cat_id, $unread_only, $limit, $offset, $include_nested = false) {
4302
4303                         $feeds = array();
4304
4305                         /* Labels */
4306
4307                         if ($cat_id == -4 || $cat_id == -2) {
4308                                 $counters = getLabelCounters($link, true);
4309
4310                                 foreach (array_values($counters) as $cv) {
4311
4312                                         $unread = $cv["counter"];
4313
4314                                         if ($unread || !$unread_only) {
4315
4316                                                 $row = array(
4317                                                                 "id" => $cv["id"],
4318                                                                 "title" => $cv["description"],
4319                                                                 "unread" => $cv["counter"],
4320                                                                 "cat_id" => -2,
4321                                                         );
4322
4323                                                 array_push($feeds, $row);
4324                                         }
4325                                 }
4326                         }
4327
4328                         /* Virtual feeds */
4329
4330                         if ($cat_id == -4 || $cat_id == -1) {
4331                                 foreach (array(-1, -2, -3, -4, -6, 0) as $i) {
4332                                         $unread = getFeedUnread($link, $i);
4333
4334                                         if ($unread || !$unread_only) {
4335                                                 $title = getFeedTitle($link, $i);
4336
4337                                                 $row = array(
4338                                                                 "id" => $i,
4339                                                                 "title" => $title,
4340                                                                 "unread" => $unread,
4341                                                                 "cat_id" => -1,
4342                                                         );
4343                                                 array_push($feeds, $row);
4344                                         }
4345
4346                                 }
4347                         }
4348
4349                         /* Child cats */
4350
4351                         if ($include_nested && $cat_id) {
4352                                 $result = db_query($link, "SELECT
4353                                         id, title FROM ttrss_feed_categories
4354                                         WHERE parent_cat = '$cat_id' AND owner_uid = " . $_SESSION["uid"] .
4355                                 " ORDER BY id, title");
4356
4357                                 while ($line = db_fetch_assoc($result)) {
4358                                         $unread = getFeedUnread($link, $line["id"], true) +
4359                                                 getCategoryChildrenUnread($link, $line["id"]);
4360
4361                                         if ($unread || !$unread_only) {
4362                                                 $row = array(
4363                                                                 "id" => $line["id"],
4364                                                                 "title" => $line["title"],
4365                                                                 "unread" => $unread,
4366                                                                 "is_cat" => true,
4367                                                         );
4368                                                 array_push($feeds, $row);
4369                                         }
4370                                 }
4371                         }
4372
4373                         /* Real feeds */
4374
4375                         if ($limit) {
4376                                 $limit_qpart = "LIMIT $limit OFFSET $offset";
4377                         } else {
4378                                 $limit_qpart = "";
4379                         }
4380
4381                         if ($cat_id == -4 || $cat_id == -3) {
4382                                 $result = db_query($link, "SELECT
4383                                         id, feed_url, cat_id, title, order_id, ".
4384                                                 SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
4385                                                 FROM ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"] .
4386                                                 " ORDER BY cat_id, title " . $limit_qpart);
4387                         } else {
4388
4389                                 if ($cat_id)
4390                                         $cat_qpart = "cat_id = '$cat_id'";
4391                                 else
4392                                         $cat_qpart = "cat_id IS NULL";
4393
4394                                 $result = db_query($link, "SELECT
4395                                         id, feed_url, cat_id, title, order_id, ".
4396                                                 SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
4397                                                 FROM ttrss_feeds WHERE
4398                                                 $cat_qpart AND owner_uid = " . $_SESSION["uid"] .
4399                                                 " ORDER BY cat_id, title " . $limit_qpart);
4400                         }
4401
4402                         while ($line = db_fetch_assoc($result)) {
4403
4404                                 $unread = getFeedUnread($link, $line["id"]);
4405
4406                                 $has_icon = feed_has_icon($line['id']);
4407
4408                                 if ($unread || !$unread_only) {
4409
4410                                         $row = array(
4411                                                         "feed_url" => $line["feed_url"],
4412                                                         "title" => $line["title"],
4413                                                         "id" => (int)$line["id"],
4414                                                         "unread" => (int)$unread,
4415                                                         "has_icon" => $has_icon,
4416                                                         "cat_id" => (int)$line["cat_id"],
4417                                                         "last_updated" => strtotime($line["last_updated"]),
4418                                                         "order_id" => (int) $line["order_id"],
4419                                                 );
4420
4421                                         array_push($feeds, $row);
4422                                 }
4423                         }
4424
4425                 return $feeds;
4426         }
4427
4428         function api_get_headlines($link, $feed_id, $limit, $offset,
4429                                 $filter, $is_cat, $show_excerpt, $show_content, $view_mode, $order,
4430                                 $include_attachments, $since_id,
4431                                 $search = "", $search_mode = "", $match_on = "",
4432                                 $include_nested = false, $sanitize_content = true) {
4433
4434                         $qfh_ret = queryFeedHeadlines($link, $feed_id, $limit,
4435                                 $view_mode, $is_cat, $search, $search_mode, $match_on,
4436                                 $order, $offset, 0, false, $since_id, $include_nested);
4437
4438                         $result = $qfh_ret[0];
4439                         $feed_title = $qfh_ret[1];
4440
4441                         $headlines = array();
4442
4443                         while ($line = db_fetch_assoc($result)) {
4444                                 $is_updated = ($line["last_read"] == "" &&
4445                                         ($line["unread"] != "t" && $line["unread"] != "1"));
4446
4447                                 $tags = explode(",", $line["tag_cache"]);
4448                                 $labels = json_decode($line["label_cache"], true);
4449
4450                                 //if (!$tags) $tags = get_article_tags($link, $line["id"]);
4451                                 //if (!$labels) $labels = get_article_labels($link, $line["id"]);
4452
4453                                 $headline_row = array(
4454                                                 "id" => (int)$line["id"],
4455                                                 "unread" => sql_bool_to_bool($line["unread"]),
4456                                                 "marked" => sql_bool_to_bool($line["marked"]),
4457                                                 "published" => sql_bool_to_bool($line["published"]),
4458                                                 "updated" => strtotime($line["updated"]),
4459                                                 "is_updated" => $is_updated,
4460                                                 "title" => $line["title"],
4461                                                 "link" => $line["link"],
4462                                                 "feed_id" => $line["feed_id"],
4463                                                 "tags" => $tags,
4464                                         );
4465
4466                                         if ($include_attachments)
4467                                                 $headline_row['attachments'] = get_article_enclosures($link,
4468                                                         $line['id']);
4469
4470                                 if ($show_excerpt) {
4471                                         $excerpt = truncate_string(strip_tags($line["content_preview"]), 100);
4472                                         $headline_row["excerpt"] = $excerpt;
4473                                 }
4474
4475                                 if ($show_content) {
4476
4477                                         if ($line["cached_content"] != "") {
4478                                                 $line["content_preview"] =& $line["cached_content"];
4479                                         }
4480
4481                                         if ($sanitize_content) {
4482                                                 $headline_row["content"] = sanitize($link,
4483                                                         $line["content_preview"], false, false, $line["site_url"]);
4484                                         } else {
4485                                                 $headline_row["content"] = $line["content_preview"];
4486                                         }
4487                                 }
4488
4489                                 // unify label output to ease parsing
4490                                 if ($labels["no-labels"] == 1) $labels = array();
4491
4492                                 $headline_row["labels"] = $labels;
4493
4494                                 $headline_row["feed_title"] = $line["feed_title"];
4495
4496                                 $headline_row["comments_count"] = (int)$line["num_comments"];
4497                                 $headline_row["comments_link"] = $line["comments"];
4498
4499                                 $headline_row["always_display_attachments"] = sql_bool_to_bool($line["always_display_enclosures"]);
4500
4501                                 array_push($headlines, $headline_row);
4502                         }
4503
4504                         return $headlines;
4505         }
4506
4507         function generate_error_feed($link, $error) {
4508                 $reply = array();
4509
4510                 $reply['headlines']['id'] = -6;
4511                 $reply['headlines']['is_cat'] = false;
4512
4513                 $reply['headlines']['toolbar'] = '';
4514                 $reply['headlines']['content'] = "<div class='whiteBox'>". $error . "</div>";
4515
4516                 $reply['headlines-info'] = array("count" => 0,
4517                         "vgroup_last_feed" => '',
4518                         "unread" => 0,
4519                         "disable_cache" => true);
4520
4521                 return $reply;
4522         }
4523
4524
4525         function generate_dashboard_feed($link) {
4526                 $reply = array();
4527
4528                 $reply['headlines']['id'] = -5;
4529                 $reply['headlines']['is_cat'] = false;
4530
4531                 $reply['headlines']['toolbar'] = '';
4532                 $reply['headlines']['content'] = "<div class='whiteBox'>".__('No feed selected.');
4533
4534                 $reply['headlines']['content'] .= "<p class=\"small\"><span class=\"insensitive\">";
4535
4536                 $result = db_query($link, "SELECT ".SUBSTRING_FOR_DATE."(MAX(last_updated), 1, 19) AS last_updated FROM ttrss_feeds
4537                         WHERE owner_uid = " . $_SESSION['uid']);
4538
4539                 $last_updated = db_fetch_result($result, 0, "last_updated");
4540                 $last_updated = make_local_datetime($link, $last_updated, false);
4541
4542                 $reply['headlines']['content'] .= sprintf(__("Feeds last updated at %s"), $last_updated);
4543
4544                 $result = db_query($link, "SELECT COUNT(id) AS num_errors
4545                         FROM ttrss_feeds WHERE last_error != '' AND owner_uid = ".$_SESSION["uid"]);
4546
4547                 $num_errors = db_fetch_result($result, 0, "num_errors");
4548
4549                 if ($num_errors > 0) {
4550                         $reply['headlines']['content'] .= "<br/>";
4551                         $reply['headlines']['content'] .= "<a class=\"insensitive\" href=\"#\" onclick=\"showFeedsWithErrors()\">".
4552                                 __('Some feeds have update errors (click for details)')."</a>";
4553                 }
4554                 $reply['headlines']['content'] .= "</span></p>";
4555
4556                 $reply['headlines-info'] = array("count" => 0,
4557                         "vgroup_last_feed" => '',
4558                         "unread" => 0,
4559                         "disable_cache" => true);
4560
4561                 return $reply;
4562         }
4563
4564         function save_email_address($link, $email) {
4565                 // FIXME: implement persistent storage of emails
4566
4567                 if (!$_SESSION['stored_emails'])
4568                         $_SESSION['stored_emails'] = array();
4569
4570                 if (!in_array($email, $_SESSION['stored_emails']))
4571                         array_push($_SESSION['stored_emails'], $email);
4572         }
4573
4574         function update_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
4575                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4576
4577                 $sql_is_cat = bool_to_sql_bool($is_cat);
4578
4579                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
4580                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
4581                         AND owner_uid = " . $owner_uid);
4582
4583                 if (db_num_rows($result) == 1) {
4584                         $key = db_escape_string(sha1(uniqid(rand(), true)));
4585
4586                         db_query($link, "UPDATE ttrss_access_keys SET access_key = '$key'
4587                                 WHERE feed_id = '$feed_id' AND is_cat = $sql_is_cat
4588                                 AND owner_uid = " . $owner_uid);
4589
4590                         return $key;
4591
4592                 } else {
4593                         return get_feed_access_key($link, $feed_id, $is_cat, $owner_uid);
4594                 }
4595         }
4596
4597         function get_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
4598
4599                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4600
4601                 $sql_is_cat = bool_to_sql_bool($is_cat);
4602
4603                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
4604                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
4605                         AND owner_uid = " . $owner_uid);
4606
4607                 if (db_num_rows($result) == 1) {
4608                         return db_fetch_result($result, 0, "access_key");
4609                 } else {
4610                         $key = db_escape_string(sha1(uniqid(rand(), true)));
4611
4612                         $result = db_query($link, "INSERT INTO ttrss_access_keys
4613                                 (access_key, feed_id, is_cat, owner_uid)
4614                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
4615
4616                         return $key;
4617                 }
4618                 return false;
4619         }
4620
4621         function get_feeds_from_html($url, $content)
4622         {
4623                 $url     = fix_url($url);
4624                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
4625
4626                 libxml_use_internal_errors(true);
4627
4628                 $doc = new DOMDocument();
4629                 $doc->loadHTML($content);
4630                 $xpath = new DOMXPath($doc);
4631                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
4632                 $feedUrls = array();
4633                 foreach ($entries as $entry) {
4634                         if ($entry->hasAttribute('href')) {
4635                                 $title = $entry->getAttribute('title');
4636                                 if ($title == '') {
4637                                         $title = $entry->getAttribute('type');
4638                                 }
4639                                 $feedUrl = rewrite_relative_url(
4640                                         $baseUrl, $entry->getAttribute('href')
4641                                 );
4642                                 $feedUrls[$feedUrl] = $title;
4643                         }
4644                 }
4645                 return $feedUrls;
4646         }
4647
4648         function is_html($content) {
4649                 return preg_match("/<html|DOCTYPE html/i", substr($content, 0, 20)) !== 0;
4650         }
4651
4652         function url_is_html($url, $login = false, $pass = false) {
4653                 return is_html(fetch_file_contents($url, false, $login, $pass));
4654         }
4655
4656         function print_label_select($link, $name, $value, $attributes = "") {
4657
4658                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
4659                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
4660
4661                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
4662                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
4663
4664                 while ($line = db_fetch_assoc($result)) {
4665
4666                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
4667
4668                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
4669                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
4670
4671                 }
4672
4673 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
4674
4675                 print "</select>";
4676
4677
4678         }
4679
4680         function format_article_enclosures($link, $id, $always_display_enclosures,
4681                                         $article_content) {
4682
4683                 $result = get_article_enclosures($link, $id);
4684                 $rv = '';
4685
4686                 if (count($result) > 0) {
4687
4688                         $entries_html = array();
4689                         $entries = array();
4690
4691                         foreach ($result as $line) {
4692
4693                                 $url = $line["content_url"];
4694                                 $ctype = $line["content_type"];
4695
4696                                 if (!$ctype) $ctype = __("unknown type");
4697
4698                                 $filename = substr($url, strrpos($url, "/")+1);
4699
4700 #                               $player = format_inline_player($link, $url, $ctype);
4701
4702 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
4703 #                                       $filename . " (" . $ctype . ")" . "</a>";
4704
4705                                 $entry = "<div onclick=\"window.open('".htmlspecialchars($url)."')\"
4706                                         dojoType=\"dijit.MenuItem\">$filename ($ctype)</div>";
4707
4708                                 array_push($entries_html, $entry);
4709
4710                                 $entry = array();
4711
4712                                 $entry["type"] = $ctype;
4713                                 $entry["filename"] = $filename;
4714                                 $entry["url"] = $url;
4715
4716                                 array_push($entries, $entry);
4717                         }
4718
4719                         if (!get_pref($link, "STRIP_IMAGES")) {
4720                                 if ($always_display_enclosures ||
4721                                                         !preg_match("/<img/i", $article_content)) {
4722
4723                                         foreach ($entries as $entry) {
4724
4725                                                 if (preg_match("/image/", $entry["type"]) ||
4726                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
4727
4728                                                                 $rv .= "<p><img
4729                                                                 alt=\"".htmlspecialchars($entry["filename"])."\"
4730                                                                 src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
4731
4732                                                 }
4733                                         }
4734                                 }
4735                         }
4736
4737                         $rv .= "<br/><div dojoType=\"dijit.form.DropDownButton\">".
4738                                 "<span>" . __('Attachments')."</span>";
4739                         $rv .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
4740
4741                         foreach ($entries_html as $entry) { $rv .= $entry; };
4742
4743                         $rv .= "</div></div>";
4744                 }
4745
4746                 return $rv;
4747         }
4748
4749         function getLastArticleId($link) {
4750                 $result = db_query($link, "SELECT MAX(ref_id) AS id FROM ttrss_user_entries
4751                         WHERE owner_uid = " . $_SESSION["uid"]);
4752
4753                 if (db_num_rows($result) == 1) {
4754                         return db_fetch_result($result, 0, "id");
4755                 } else {
4756                         return -1;
4757                 }
4758         }
4759
4760         function build_url($parts) {
4761                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
4762         }
4763
4764         /**
4765          * Converts a (possibly) relative URL to a absolute one.
4766          *
4767          * @param string $url     Base URL (i.e. from where the document is)
4768          * @param string $rel_url Possibly relative URL in the document
4769          *
4770          * @return string Absolute URL
4771          */
4772         function rewrite_relative_url($url, $rel_url) {
4773                 if (strpos($rel_url, "magnet:") === 0) {
4774                         return $rel_url;
4775                 } else if (strpos($rel_url, "://") !== false) {
4776                         return $rel_url;
4777                 } else if (strpos($rel_url, "//") === 0) {
4778                         # protocol-relative URL (rare but they exist)
4779                         return $rel_url;
4780                 } else if (strpos($rel_url, "/") === 0)
4781                 {
4782                         $parts = parse_url($url);
4783                         $parts['path'] = $rel_url;
4784
4785                         return build_url($parts);
4786
4787                 } else {
4788                         $parts = parse_url($url);
4789                         if (!isset($parts['path'])) {
4790                                 $parts['path'] = '/';
4791                         }
4792                         $dir = $parts['path'];
4793                         if (substr($dir, -1) !== '/') {
4794                                 $dir = dirname($parts['path']);
4795                                 $dir !== '/' && $dir .= '/';
4796                         }
4797                         $parts['path'] = $dir . $rel_url;
4798
4799                         return build_url($parts);
4800                 }
4801         }
4802
4803         function sphinx_search($query, $offset = 0, $limit = 30) {
4804                 require_once 'lib/sphinxapi.php';
4805
4806                 $sphinxClient = new SphinxClient();
4807
4808                 $sphinxClient->SetServer('localhost', 9312);
4809                 $sphinxClient->SetConnectTimeout(1);
4810
4811                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
4812                         'feed_title' => 20));
4813
4814                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
4815                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
4816                 $sphinxClient->SetLimits($offset, $limit, 1000);
4817                 $sphinxClient->SetArrayResult(false);
4818                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
4819
4820                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
4821
4822                 $ids = array();
4823
4824                 if (is_array($result['matches'])) {
4825                         foreach (array_keys($result['matches']) as $int_id) {
4826                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
4827                                 array_push($ids, $ref_id);
4828                         }
4829                 }
4830
4831                 return $ids;
4832         }
4833
4834         function cleanup_tags($link, $days = 14, $limit = 1000) {
4835
4836                 if (DB_TYPE == "pgsql") {
4837                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
4838                 } else if (DB_TYPE == "mysql") {
4839                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
4840                 }
4841
4842                 $tags_deleted = 0;
4843
4844                 while ($limit > 0) {
4845                         $limit_part = 500;
4846
4847                         $query = "SELECT ttrss_tags.id AS id
4848                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
4849                                 WHERE post_int_id = int_id AND $interval_query AND
4850                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
4851
4852                         $result = db_query($link, $query);
4853
4854                         $ids = array();
4855
4856                         while ($line = db_fetch_assoc($result)) {
4857                                 array_push($ids, $line['id']);
4858                         }
4859
4860                         if (count($ids) > 0) {
4861                                 $ids = join(",", $ids);
4862                                 print ".";
4863
4864                                 $tmp_result = db_query($link, "DELETE FROM ttrss_tags WHERE id IN ($ids)");
4865                                 $tags_deleted += db_affected_rows($link, $tmp_result);
4866                         } else {
4867                                 break;
4868                         }
4869
4870                         $limit -= $limit_part;
4871                 }
4872
4873                 print "\n";
4874
4875                 return $tags_deleted;
4876         }
4877
4878         function print_user_stylesheet($link) {
4879                 $value = get_pref($link, 'USER_STYLESHEET');
4880
4881                 if ($value) {
4882                         print "<style type=\"text/css\">";
4883                         print str_replace("<br/>", "\n", $value);
4884                         print "</style>";
4885                 }
4886
4887         }
4888
4889 /*      function rewrite_urls($line) {
4890                 global $url_regex;
4891
4892                 $urls = null;
4893
4894                 $result = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
4895                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $line);
4896
4897                 return $result;
4898         } */
4899
4900         function rewrite_urls($html) {
4901                 libxml_use_internal_errors(true);
4902
4903                 $charset_hack = '<head>
4904                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
4905                 </head>';
4906
4907                 $doc = new DOMDocument();
4908                 $doc->loadHTML($charset_hack . $html);
4909                 $xpath = new DOMXPath($doc);
4910
4911                 $entries = $xpath->query('//*/text()');
4912
4913                 foreach ($entries as $entry) {
4914                         if (strstr($entry->wholeText, "://") !== false) {
4915                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
4916                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
4917
4918                                 if ($text != $entry->wholeText) {
4919                                         $cdoc = new DOMDocument();
4920                                         $cdoc->loadHTML($charset_hack . $text);
4921
4922
4923                                         foreach ($cdoc->childNodes as $cnode) {
4924                                                 $cnode = $doc->importNode($cnode, true);
4925
4926                                                 if ($cnode) {
4927                                                         $entry->parentNode->insertBefore($cnode);
4928                                                 }
4929                                         }
4930
4931                                         $entry->parentNode->removeChild($entry);
4932
4933                                 }
4934                         }
4935                 }
4936
4937                 $node = $doc->getElementsByTagName('body')->item(0);
4938
4939                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
4940                 if ($node)
4941                         return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
4942                 else
4943                         return $html;
4944         }
4945
4946         function filter_to_sql($link, $filter, $owner_uid) {
4947                 $query = array();
4948
4949                 if (DB_TYPE == "pgsql")
4950                         $reg_qpart = "~";
4951                 else
4952                         $reg_qpart = "REGEXP";
4953
4954                 foreach ($filter["rules"] AS $rule) {
4955                         $regexp_valid = preg_match('/' . $rule['reg_exp'] . '/',
4956                                 $rule['reg_exp']) !== FALSE;
4957
4958                         if ($regexp_valid) {
4959
4960                                 $rule['reg_exp'] = db_escape_string($rule['reg_exp']);
4961
4962                                 switch ($rule["type"]) {
4963                                         case "title":
4964                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
4965                                                         $rule['reg_exp'] . "')";
4966                                                 break;
4967                                         case "content":
4968                                                 $qpart = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
4969                                                         $rule['reg_exp'] . "')";
4970                                                 break;
4971                                         case "both":
4972                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
4973                                                         $rule['reg_exp'] . "') OR LOWER(" .
4974                                                         "ttrss_entries.content) $reg_qpart LOWER('" . $rule['reg_exp'] . "')";
4975                                                 break;
4976                                         case "tag":
4977                                                 $qpart = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
4978                                                         $rule['reg_exp'] . "')";
4979                                                 break;
4980                                         case "link":
4981                                                 $qpart = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
4982                                                         $rule['reg_exp'] . "')";
4983                                                 break;
4984                                         case "author":
4985                                                 $qpart = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
4986                                                         $rule['reg_exp'] . "')";
4987                                                 break;
4988                                 }
4989
4990                                 if (isset($rule["feed_id"]) && $rule["feed_id"] > 0) {
4991                                         $qpart .= " AND feed_id = " . db_escape_string($rule["feed_id"]);
4992                                 }
4993
4994                                 if (isset($rule["cat_id"])) {
4995
4996                                         if ($rule["cat_id"] > 0) {
4997                                                 $children = getChildCategories($link, $rule["cat_id"], $owner_uid);
4998                                                 array_push($children, $rule["cat_id"]);
4999
5000                                                 $children = join(",", $children);
5001
5002                                                 $cat_qpart = "cat_id IN ($children)";
5003                                         } else {
5004                                                 $cat_qpart = "cat_id IS NULL";
5005                                         }
5006
5007                                         $qpart .= " AND $cat_qpart";
5008                                 }
5009
5010                                 array_push($query, "($qpart)");
5011
5012                         }
5013                 }
5014
5015                 if (count($query) > 0) {
5016                         return "(" . join($filter["match_any_rule"] ? "OR" : "AND", $query) . ")";
5017                 } else {
5018                         return "(false)";
5019                 }
5020         }
5021
5022         // Status codes:
5023         // -1  - never connected
5024         // 0   - no data received
5025         // 1   - data received successfully
5026         // 2   - did not receive valid data
5027         // >10 - server error, code + 10 (e.g. 16 means server error 6)
5028
5029         function get_linked_feeds($link, $instance_id = false) {
5030                 if ($instance_id)
5031                         $instance_qpart = "id = '$instance_id' AND ";
5032                 else
5033                         $instance_qpart = "";
5034
5035                 if (DB_TYPE == "pgsql") {
5036                         $date_qpart = "last_connected < NOW() - INTERVAL '6 hours'";
5037                 } else {
5038                         $date_qpart = "last_connected < DATE_SUB(NOW(), INTERVAL 6 HOUR)";
5039                 }
5040
5041                 $result = db_query($link, "SELECT id, access_key, access_url FROM ttrss_linked_instances
5042                         WHERE $instance_qpart $date_qpart ORDER BY last_connected");
5043
5044                 while ($line = db_fetch_assoc($result)) {
5045                         $id = $line['id'];
5046
5047                         _debug("Updating: " . $line['access_url'] . " ($id)");
5048
5049                         $fetch_url = $line['access_url'] . '/public.php?op=fbexport';
5050                         $post_query = 'key=' . $line['access_key'];
5051
5052                         $feeds = fetch_file_contents($fetch_url, false, false, false, $post_query);
5053
5054                         // try doing it the old way
5055                         if (!$feeds) {
5056                                 $fetch_url = $line['access_url'] . '/backend.php?op=fbexport';
5057                                 $feeds = fetch_file_contents($fetch_url, false, false, false, $post_query);
5058                         }
5059
5060                         if ($feeds) {
5061                                 $feeds = json_decode($feeds, true);
5062
5063                                 if ($feeds) {
5064                                         if ($feeds['error']) {
5065                                                 $status = $feeds['error']['code'] + 10;
5066
5067                                                 // access denied
5068                                                 if ($status == 16) {
5069                                                         db_query($link, "DELETE FROM ttrss_linked_feeds
5070                                                                 WHERE instance_id = '$id'");
5071                                                 }
5072                                         } else {
5073                                                 $status = 1;
5074
5075                                                 if (count($feeds['feeds']) > 0) {
5076
5077                                                         db_query($link, "DELETE FROM ttrss_linked_feeds
5078                                                                 WHERE instance_id = '$id'");
5079
5080                                                         foreach ($feeds['feeds'] as $feed) {
5081                                                                 $feed_url = db_escape_string($feed['feed_url']);
5082                                                                 $title = db_escape_string($feed['title']);
5083                                                                 $subscribers = db_escape_string($feed['subscribers']);
5084                                                                 $site_url = db_escape_string($feed['site_url']);
5085
5086                                                                 db_query($link, "INSERT INTO ttrss_linked_feeds
5087                                                                         (feed_url, site_url, title, subscribers, instance_id, created, updated)
5088                                                                 VALUES
5089                                                                         ('$feed_url', '$site_url', '$title', '$subscribers', '$id', NOW(), NOW())");
5090                                                         }
5091                                                 } else {
5092                                                         // received 0 feeds, this might indicate that
5093                                                         // the instance on the other hand is rebuilding feedbrowser cache
5094                                                         // we will try again later
5095
5096                                                         // TODO: maybe perform expiration based on updated here?
5097                                                 }
5098
5099                                                 _debug("Processed " . count($feeds['feeds']) . " feeds.");
5100                                         }
5101                                 } else {
5102                                         $status = 2;
5103                                 }
5104
5105                         } else {
5106                                 $status = 0;
5107                         }
5108
5109                         _debug("Status: $status");
5110
5111                         db_query($link, "UPDATE ttrss_linked_instances SET
5112                                 last_status_out = '$status', last_connected = NOW() WHERE id = '$id'");
5113
5114                 }
5115         }
5116
5117         function make_feed_browser($link, $search, $limit, $mode = 1) {
5118
5119                 $owner_uid = $_SESSION["uid"];
5120                 $rv = '';
5121
5122                 if ($search) {
5123                         $search_qpart = "AND (UPPER(feed_url) LIKE UPPER('%$search%') OR
5124                                                 UPPER(title) LIKE UPPER('%$search%'))";
5125                 } else {
5126                         $search_qpart = "";
5127                 }
5128
5129                 if ($mode == 1) {
5130                         /* $result = db_query($link, "SELECT feed_url, subscribers FROM
5131                          ttrss_feedbrowser_cache WHERE (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
5132                         WHERE tf.feed_url = ttrss_feedbrowser_cache.feed_url
5133                         AND owner_uid = '$owner_uid') $search_qpart
5134                         ORDER BY subscribers DESC LIMIT $limit"); */
5135
5136                         $result = db_query($link, "SELECT feed_url, site_url, title, SUM(subscribers) AS subscribers FROM
5137                                                 (SELECT feed_url, site_url, title, subscribers FROM ttrss_feedbrowser_cache UNION ALL
5138                                                         SELECT feed_url, site_url, title, subscribers FROM ttrss_linked_feeds) AS qqq
5139                                                 WHERE
5140                                                         (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
5141                                                                 WHERE tf.feed_url = qqq.feed_url
5142                                                                         AND owner_uid = '$owner_uid') $search_qpart
5143                                                 GROUP BY feed_url, site_url, title ORDER BY subscribers DESC LIMIT $limit");
5144
5145                 } else if ($mode == 2) {
5146                         $result = db_query($link, "SELECT *,
5147                                                 (SELECT COUNT(*) FROM ttrss_user_entries WHERE
5148                                                         orig_feed_id = ttrss_archived_feeds.id) AS articles_archived
5149                                                 FROM
5150                                                         ttrss_archived_feeds
5151                                                 WHERE
5152                                                 (SELECT COUNT(*) FROM ttrss_feeds
5153                                                         WHERE ttrss_feeds.feed_url = ttrss_archived_feeds.feed_url AND
5154                                                                 owner_uid = '$owner_uid') = 0   AND
5155                                                 owner_uid = '$owner_uid' $search_qpart
5156                                                 ORDER BY id DESC LIMIT $limit");
5157                 }
5158
5159                 $feedctr = 0;
5160
5161                 while ($line = db_fetch_assoc($result)) {
5162
5163                         if ($mode == 1) {
5164
5165                                 $feed_url = htmlspecialchars($line["feed_url"]);
5166                                 $site_url = htmlspecialchars($line["site_url"]);
5167                                 $subscribers = $line["subscribers"];
5168
5169                                 $check_box = "<input onclick='toggleSelectListRow2(this)'
5170                                                         dojoType=\"dijit.form.CheckBox\"
5171                                                         type=\"checkbox\" \">";
5172
5173                                 $class = ($feedctr % 2) ? "even" : "odd";
5174
5175                                 $site_url = "<a target=\"_blank\"
5176                                                         href=\"$site_url\">
5177                                                         <span class=\"fb_feedTitle\">".
5178                                 htmlspecialchars($line["title"])."</span></a>";
5179
5180                                 $feed_url = "<a target=\"_blank\" class=\"fb_feedUrl\"
5181                                                         href=\"$feed_url\"><img src='images/feed-icon-12x12.png'
5182                                                         style='vertical-align : middle'></a>";
5183
5184                                 $rv .= "<li>$check_box $feed_url $site_url".
5185                                                         "&nbsp;<span class='subscribers'>($subscribers)</span></li>";
5186
5187                         } else if ($mode == 2) {
5188                                 $feed_url = htmlspecialchars($line["feed_url"]);
5189                                 $site_url = htmlspecialchars($line["site_url"]);
5190                                 $title = htmlspecialchars($line["title"]);
5191
5192                                 $check_box = "<input onclick='toggleSelectListRow2(this)' dojoType=\"dijit.form.CheckBox\"
5193                                                         type=\"checkbox\">";
5194
5195                                 $class = ($feedctr % 2) ? "even" : "odd";
5196
5197                                 if ($line['articles_archived'] > 0) {
5198                                         $archived = sprintf(__("%d archived articles"), $line['articles_archived']);
5199                                         $archived = "&nbsp;<span class='subscribers'>($archived)</span>";
5200                                 } else {
5201                                         $archived = '';
5202                                 }
5203
5204                                 $site_url = "<a target=\"_blank\"
5205                                                         href=\"$site_url\">
5206                                                         <span class=\"fb_feedTitle\">".
5207                                 htmlspecialchars($line["title"])."</span></a>";
5208
5209                                 $feed_url = "<a target=\"_blank\" class=\"fb_feedUrl\"
5210                                                         href=\"$feed_url\"><img src='images/feed-icon-12x12.png'
5211                                                         style='vertical-align : middle'></a>";
5212
5213
5214                                 $rv .= "<li id=\"FBROW-".$line["id"]."\">".
5215                                                         "$check_box $feed_url $site_url $archived</li>";
5216                         }
5217
5218                         ++$feedctr;
5219                 }
5220
5221                 if ($feedctr == 0) {
5222                         $rv .= "<li style=\"text-align : center\"><p>".__('No feeds found.')."</p></li>";
5223                 }
5224
5225                 return $rv;
5226         }
5227
5228         if (!function_exists('gzdecode')) {
5229                 function gzdecode($string) { // no support for 2nd argument
5230                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
5231                                 base64_encode($string));
5232                 }
5233         }
5234
5235         function perform_data_import($link, $filename, $owner_uid) {
5236
5237                 $num_imported = 0;
5238                 $num_processed = 0;
5239                 $num_feeds_created = 0;
5240
5241                 $doc = @DOMDocument::load($filename);
5242
5243                 if (!$doc) {
5244                         $contents = file_get_contents($filename);
5245
5246                         if ($contents) {
5247                                 $data = @gzuncompress($contents);
5248                         }
5249
5250                         if (!$data) {
5251                                 $data = @gzdecode($contents);
5252                         }
5253
5254                         if ($data)
5255                                 $doc = DOMDocument::loadXML($data);
5256                 }
5257
5258                 if ($doc) {
5259
5260                         $xpath = new DOMXpath($doc);
5261
5262                         $container = $doc->firstChild;
5263
5264                         if ($container && $container->hasAttribute('schema-version')) {
5265                                 $schema_version = $container->getAttribute('schema-version');
5266
5267                                 if ($schema_version != SCHEMA_VERSION) {
5268                                         print "<p>" .__("Could not import: incorrect schema version.") . "</p>";
5269                                         return;
5270                                 }
5271
5272                         } else {
5273                                 print "<p>" . __("Could not import: unrecognized document format.") . "</p>";
5274                                 return;
5275                         }
5276
5277                         $articles = $xpath->query("//article");
5278
5279                         foreach ($articles as $article_node) {
5280                                 if ($article_node->childNodes) {
5281
5282                                         $ref_id = 0;
5283
5284                                         $article = array();
5285
5286                                         foreach ($article_node->childNodes as $child) {
5287                                                 if ($child->nodeName != 'label_cache')
5288                                                         $article[$child->nodeName] = db_escape_string($child->nodeValue);
5289                                                 else
5290                                                         $article[$child->nodeName] = $child->nodeValue;
5291                                         }
5292
5293                                         //print_r($article);
5294
5295                                         if ($article['guid']) {
5296
5297                                                 ++$num_processed;
5298
5299                                                 //db_query($link, "BEGIN");
5300
5301                                                 //print 'GUID:' . $article['guid'] . "\n";
5302
5303                                                 $result = db_query($link, "SELECT id FROM ttrss_entries
5304                                                         WHERE guid = '".$article['guid']."'");
5305
5306                                                 if (db_num_rows($result) == 0) {
5307
5308                                                         $result = db_query($link,
5309                                                                 "INSERT INTO ttrss_entries
5310                                                                         (title,
5311                                                                         guid,
5312                                                                         link,
5313                                                                         updated,
5314                                                                         content,
5315                                                                         content_hash,
5316                                                                         no_orig_date,
5317                                                                         date_updated,
5318                                                                         date_entered,
5319                                                                         comments,
5320                                                                         num_comments,
5321                                                                         author)
5322                                                                 VALUES
5323                                                                         ('".$article['title']."',
5324                                                                         '".$article['guid']."',
5325                                                                         '".$article['link']."',
5326                                                                         '".$article['updated']."',
5327                                                                         '".$article['content']."',
5328                                                                         '".sha1($article['content'])."',
5329                                                                         false,
5330                                                                         NOW(),
5331                                                                         NOW(),
5332                                                                         '',
5333                                                                         '0',
5334                                                                         '')");
5335
5336                                                         $result = db_query($link, "SELECT id FROM ttrss_entries
5337                                                                 WHERE guid = '".$article['guid']."'");
5338
5339                                                         if (db_num_rows($result) != 0) {
5340                                                                 $ref_id = db_fetch_result($result, 0, "id");
5341                                                         }
5342
5343                                                 } else {
5344                                                         $ref_id = db_fetch_result($result, 0, "id");
5345                                                 }
5346
5347                                                 //print "Got ref ID: $ref_id\n";
5348
5349                                                 if ($ref_id) {
5350
5351                                                         $feed_url = $article['feed_url'];
5352                                                         $feed_title = $article['feed_title'];
5353
5354                                                         $feed = 'NULL';
5355
5356                                                         if ($feed_url && $feed_title) {
5357                                                                 $result = db_query($link, "SELECT id FROM ttrss_feeds
5358                                                                         WHERE feed_url = '$feed_url' AND owner_uid = '$owner_uid'");
5359
5360                                                                 if (db_num_rows($result) != 0) {
5361                                                                         $feed = db_fetch_result($result, 0, "id");
5362                                                                 } else {
5363                                                                         // try autocreating feed in Uncategorized...
5364
5365                                                                         $result = db_query($link, "INSERT INTO ttrss_feeds (owner_uid,
5366                                                                                 feed_url, title) VALUES ($owner_uid, '$feed_url', '$feed_title')");
5367
5368                                                                         $result = db_query($link, "SELECT id FROM ttrss_feeds
5369                                                                                 WHERE feed_url = '$feed_url' AND owner_uid = '$owner_uid'");
5370
5371                                                                         if (db_num_rows($result) != 0) {
5372                                                                                 ++$num_feeds_created;
5373
5374                                                                                 $feed = db_fetch_result($result, 0, "id");
5375                                                                         }
5376                                                                 }
5377                                                         }
5378
5379                                                         if ($feed != 'NULL')
5380                                                                 $feed_qpart = "feed_id = $feed";
5381                                                         else
5382                                                                 $feed_qpart = "feed_id IS NULL";
5383
5384                                                         //print "$ref_id / $feed / " . $article['title'] . "\n";
5385
5386                                                         $result = db_query($link, "SELECT int_id FROM ttrss_user_entries
5387                                                                 WHERE ref_id = '$ref_id' AND owner_uid = '$owner_uid' AND $feed_qpart");
5388
5389                                                         if (db_num_rows($result) == 0) {
5390
5391                                                                 $marked = bool_to_sql_bool(sql_bool_to_bool($article['marked']));
5392                                                                 $published = bool_to_sql_bool(sql_bool_to_bool($article['published']));
5393                                                                 $score = (int) $article['score'];
5394
5395                                                                 $tag_cache = $article['tag_cache'];
5396                                                                 $label_cache = db_escape_string($article['label_cache']);
5397                                                                 $note = $article['note'];
5398
5399                                                                 //print "Importing " . $article['title'] . "<br/>";
5400
5401                                                                 ++$num_imported;
5402
5403                                                                 $result = db_query($link,
5404                                                                         "INSERT INTO ttrss_user_entries
5405                                                                         (ref_id, owner_uid, feed_id, unread, last_read, marked,
5406                                                                                 published, score, tag_cache, label_cache, uuid, note)
5407                                                                         VALUES ($ref_id, $owner_uid, $feed, false,
5408                                                                                 NULL, $marked, $published, $score, '$tag_cache',
5409                                                                                         '$label_cache', '', '$note')");
5410
5411                                                                 $label_cache = json_decode($label_cache, true);
5412
5413                                                                 if (is_array($label_cache) && $label_cache["no-labels"] != 1) {
5414                                                                         foreach ($label_cache as $label) {
5415
5416                                                                                 label_create($link, $label[1],
5417                                                                                         $label[2], $label[3], $owner_uid);
5418
5419                                                                                 label_add_article($link, $ref_id, $label[1], $owner_uid);
5420
5421                                                                         }
5422                                                                 }
5423
5424                                                                 //db_query($link, "COMMIT");
5425                                                         }
5426                                                 }
5427                                         }
5428                                 }
5429                         }
5430
5431                         print "<p>" .
5432                                 T_sprintf("Finished: %d articles processed, %d imported, %d feeds created.",
5433                                         $num_processed, $num_imported, $num_feeds_created) .
5434                                         "</p>";
5435
5436                 } else {
5437
5438                         print "<p>" . __("Could not load XML document.") . "</p>";
5439
5440                 }
5441         }
5442
5443         function get_random_bytes($length) {
5444                 if (function_exists('openssl_random_pseudo_bytes')) {
5445                         return openssl_random_pseudo_bytes($length);
5446                 } else {
5447                         $output = "";
5448
5449                         for ($i = 0; $i < $length; $i++)
5450                                 $output .= chr(mt_rand(0, 255));
5451
5452                         return $output;
5453                 }
5454         }
5455
5456         function read_stdin() {
5457                 $fp = fopen("php://stdin", "r");
5458
5459                 if ($fp) {
5460                         $line = trim(fgets($fp));
5461                         fclose($fp);
5462                         return $line;
5463                 }
5464
5465                 return null;
5466         }
5467
5468         function tmpdirname($path, $prefix) {
5469                 // Use PHP's tmpfile function to create a temporary
5470                 // directory name. Delete the file and keep the name.
5471                 $tempname = tempnam($path,$prefix);
5472                 if (!$tempname)
5473                         return false;
5474
5475                 if (!unlink($tempname))
5476                         return false;
5477
5478        return $tempname;
5479         }
5480
5481         function getFeedCategory($link, $feed) {
5482                 $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
5483                         WHERE id = '$feed'");
5484
5485                 if (db_num_rows($result) > 0) {
5486                         return db_fetch_result($result, 0, "cat_id");
5487                 } else {
5488                         return false;
5489                 }
5490
5491         }
5492
5493         function create_published_article($link, $title, $url, $content, $labels_str,
5494                         $owner_uid) {
5495
5496                 $guid = sha1($url . $owner_uid); // include owner_uid to prevent global GUID clash
5497                 $content_hash = sha1($content);
5498
5499                 if ($labels_str != "") {
5500                         $labels = explode(",", $labels_str);
5501                 } else {
5502                         $labels = array();
5503                 }
5504
5505                 $rc = false;
5506
5507                 if (!$title) $title = $url;
5508                 if (!$title && !$url) return false;
5509
5510                 if (filter_var($url, FILTER_VALIDATE_URL) === FALSE) return false;
5511
5512                 db_query($link, "BEGIN");
5513
5514                 // only check for our user data here, others might have shared this with different content etc
5515                 $result = db_query($link, "SELECT id FROM ttrss_entries, ttrss_user_entries WHERE
5516                         link = '$url' AND ref_id = id AND owner_uid = '$owner_uid' LIMIT 1");
5517
5518                 if (db_num_rows($result) != 0) {
5519                         $ref_id = db_fetch_result($result, 0, "id");
5520
5521                         $result = db_query($link, "SELECT int_id FROM ttrss_user_entries WHERE
5522                                 ref_id = '$ref_id' AND owner_uid = '$owner_uid' LIMIT 1");
5523
5524                         if (db_num_rows($result) != 0) {
5525                                 $int_id = db_fetch_result($result, 0, "int_id");
5526
5527                                 db_query($link, "UPDATE ttrss_entries SET
5528                                         content = '$content', content_hash = '$content_hash' WHERE id = '$ref_id'");
5529
5530                                 db_query($link, "UPDATE ttrss_user_entries SET published = true WHERE
5531                                                 int_id = '$int_id' AND owner_uid = '$owner_uid'");
5532                         } else {
5533
5534                                 db_query($link, "INSERT INTO ttrss_user_entries
5535                                         (ref_id, uuid, feed_id, orig_feed_id, owner_uid, published, tag_cache, label_cache, last_read, note, unread)
5536                                         VALUES
5537                                         ('$ref_id', '', NULL, NULL, $owner_uid, true, '', '', NOW(), '', false)");
5538                         }
5539
5540                         if (count($labels) != 0) {
5541                                 foreach ($labels as $label) {
5542                                         label_add_article($link, $ref_id, trim($label), $owner_uid);
5543                                 }
5544                         }
5545
5546                         $rc = true;
5547
5548                 } else {
5549                         $result = db_query($link, "INSERT INTO ttrss_entries
5550                                 (title, guid, link, updated, content, content_hash, date_entered, date_updated)
5551                                 VALUES
5552                                 ('$title', '$guid', '$url', NOW(), '$content', '$content_hash', NOW(), NOW())");
5553
5554                         $result = db_query($link, "SELECT id FROM ttrss_entries WHERE guid = '$guid'");
5555
5556                         if (db_num_rows($result) != 0) {
5557                                 $ref_id = db_fetch_result($result, 0, "id");
5558
5559                                 db_query($link, "INSERT INTO ttrss_user_entries
5560                                         (ref_id, uuid, feed_id, orig_feed_id, owner_uid, published, tag_cache, label_cache, last_read, note, unread)
5561                                         VALUES
5562                                         ('$ref_id', '', NULL, NULL, $owner_uid, true, '', '', NOW(), '', false)");
5563
5564                                 if (count($labels) != 0) {
5565                                         foreach ($labels as $label) {
5566                                                 label_add_article($link, $ref_id, trim($label), $owner_uid);
5567                                         }
5568                                 }
5569
5570                                 $rc = true;
5571                         }
5572                 }
5573
5574                 db_query($link, "COMMIT");
5575
5576                 return $rc;
5577         }
5578
5579         function implements_interface($class, $interface) {
5580                 return in_array($interface, class_implements($class));
5581         }
5582
5583 ?>