include/functions.php

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