include/functions.php

   1 <?php
   2         define('EXPECTED_CONFIG_VERSION', 26);
   3         define('SCHEMA_VERSION', 120);
   4
   5         define('LABEL_BASE_INDEX', -1024);
   6         define('PLUGIN_FEED_BASE_INDEX', -128);
   7
   8         define('COOKIE_LIFETIME_LONG', 86400*365);
   9
  10         $fetch_last_error = false;
  11         $fetch_last_error_code = false;
  12         $fetch_last_content_type = false;
  13         $fetch_curl_used = false;
  14
  15         mb_internal_encoding("UTF-8");
  16         date_default_timezone_set('UTC');
  17         if (defined('E_DEPRECATED')) {
  18                 error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
  19         } else {
  20                 error_reporting(E_ALL & ~E_NOTICE);
  21         }
  22
  23         require_once 'config.php';
  24
  25         /**
  26          * Define a constant if not already defined
  27          *
  28          * @param string $name The constant name.
  29          * @param mixed $value The constant value.
  30          * @access public
  31          * @return boolean True if defined successfully or not.
  32          */
  33         function define_default($name, $value) {
  34                 defined($name) or define($name, $value);
  35         }
  36
  37         ///// Some defaults that you can override in config.php //////
  38
  39         define_default('FEED_FETCH_TIMEOUT', 45);
  40         // How may seconds to wait for response when requesting feed from a site
  41         define_default('FEED_FETCH_NO_CACHE_TIMEOUT', 15);
  42         // How may seconds to wait for response when requesting feed from a
  43         // site when that feed wasn't cached before
  44         define_default('FILE_FETCH_TIMEOUT', 45);
  45         // Default timeout when fetching files from remote sites
  46         define_default('FILE_FETCH_CONNECT_TIMEOUT', 15);
  47         // How many seconds to wait for initial response from website when
  48         // fetching files from remote sites
  49
  50         if (DB_TYPE == "pgsql") {
  51                 define('SUBSTRING_FOR_DATE', 'SUBSTRING_FOR_DATE');
  52         } else {
  53                 define('SUBSTRING_FOR_DATE', 'SUBSTRING');
  54         }
  55
  56         /**
  57          * Return available translations names.
  58          *
  59          * @access public
  60          * @return array A array of available translations.
  61          */
  62         function get_translations() {
  63                 $tr = array(
  64                                         "auto"  => "Detect automatically",
  65                                         "ca_CA" => "Català",
  66                                         "cs_CZ" => "Česky",
  67                                         "en_US" => "English",
  68                                         "es_ES" => "Español",
  69                                         "de_DE" => "Deutsch",
  70                                         "fr_FR" => "Français",
  71                                         "hu_HU" => "Magyar (Hungarian)",
  72                                         "it_IT" => "Italiano",
  73                                         "ja_JP" => "日本語 (Japanese)",
  74                                         "lv_LV" => "Latviešu",
  75                                         "nb_NO" => "Norwegian bokmål",
  76                                         "nl_NL" => "Dutch",
  77                                         "pl_PL" => "Polski",
  78                                         "ru_RU" => "Русский",
  79                                         "pt_BR" => "Portuguese/Brazil",
  80                                         "zh_CN" => "Simplified Chinese",
  81                                         "sv_SE" => "Svenska",
  82                                         "fi_FI" => "Suomi");
  83
  84                 return $tr;
  85         }
  86
  87         require_once "lib/accept-to-gettext.php";
  88         require_once "lib/gettext/gettext.inc";
  89
  90
  91         function startup_gettext() {
  92
  93                 # Get locale from Accept-Language header
  94                 $lang = al2gt(array_keys(get_translations()), "text/html");
  95
  96                 if (defined('_TRANSLATION_OVERRIDE_DEFAULT')) {
  97                         $lang = _TRANSLATION_OVERRIDE_DEFAULT;
  98                 }
  99
 100                 if ($_SESSION["uid"] && get_schema_version() >= 120) {
 101                         $pref_lang = get_pref("USER_LANGUAGE", $_SESSION["uid"]);
 102
 103                         if ($pref_lang) {
 104                                 $lang = $pref_lang;
 105                         }
 106                 }
 107
 108                 if ($lang) {
 109                         if (defined('LC_MESSAGES')) {
 110                                 _setlocale(LC_MESSAGES, $lang);
 111                         } else if (defined('LC_ALL')) {
 112                                 _setlocale(LC_ALL, $lang);
 113                         }
 114
 115                         _bindtextdomain("messages", "locale");
 116
 117                         _textdomain("messages");
 118                         _bind_textdomain_codeset("messages", "UTF-8");
 119                 }
 120         }
 121
 122         require_once 'db-prefs.php';
 123         require_once 'version.php';
 124         require_once 'ccache.php';
 125         require_once 'labels.php';
 126
 127         define('SELF_USER_AGENT', 'Tiny Tiny RSS/' . VERSION . ' (http://tt-rss.org/)');
 128         ini_set('user_agent', SELF_USER_AGENT);
 129
 130         require_once 'lib/pubsubhubbub/publisher.php';
 131
 132         $schema_version = false;
 133
 134         /**
 135          * Print a timestamped debug message.
 136          *
 137          * @param string $msg The debug message.
 138          * @return void
 139          */
 140         function _debug($msg, $show = true) {
 141
 142                 $ts = strftime("%H:%M:%S", time());
 143                 if (function_exists('posix_getpid')) {
 144                         $ts = "$ts/" . posix_getpid();
 145                 }
 146
 147                 if ($show && !(defined('QUIET') && QUIET)) {
 148                         print "[$ts] $msg\n";
 149                 }
 150
 151                 if (defined('LOGFILE'))  {
 152                         $fp = fopen(LOGFILE, 'a+');
 153
 154                         if ($fp) {
 155                                 fputs($fp, "[$ts] $msg\n");
 156                                 fclose($fp);
 157                         }
 158                 }
 159
 160         } // function _debug
 161
 162         /**
 163          * Purge a feed old posts.
 164          *
 165          * @param mixed $link A database connection.
 166          * @param mixed $feed_id The id of the purged feed.
 167          * @param mixed $purge_interval Olderness of purged posts.
 168          * @param boolean $debug Set to True to enable the debug. False by default.
 169          * @access public
 170          * @return void
 171          */
 172         function purge_feed($feed_id, $purge_interval, $debug = false) {
 173
 174                 if (!$purge_interval) $purge_interval = feed_purge_interval($feed_id);
 175
 176                 $rows = -1;
 177
 178                 $result = db_query(
 179                         "SELECT owner_uid FROM ttrss_feeds WHERE id = '$feed_id'");
 180
 181                 $owner_uid = false;
 182
 183                 if (db_num_rows($result) == 1) {
 184                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 185                 }
 186
 187                 if ($purge_interval == -1 || !$purge_interval) {
 188                         if ($owner_uid) {
 189                                 ccache_update($feed_id, $owner_uid);
 190                         }
 191                         return;
 192                 }
 193
 194                 if (!$owner_uid) return;
 195
 196                 if (FORCE_ARTICLE_PURGE == 0) {
 197                         $purge_unread = get_pref("PURGE_UNREAD_ARTICLES",
 198                                 $owner_uid, false);
 199                 } else {
 200                         $purge_unread = true;
 201                         $purge_interval = FORCE_ARTICLE_PURGE;
 202                 }
 203
 204                 if (!$purge_unread) $query_limit = " unread = false AND ";
 205
 206                 if (DB_TYPE == "pgsql") {
 207                         $pg_version = get_pgsql_version();
 208
 209                         if (preg_match("/^7\./", $pg_version) || preg_match("/^8\.0/", $pg_version)) {
 210
 211                                 $result = db_query("DELETE FROM ttrss_user_entries WHERE
 212                                         ttrss_entries.id = ref_id AND
 213                                         marked = false AND
 214                                         feed_id = '$feed_id' AND
 215                                         $query_limit
 216                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 217
 218                         } else {
 219
 220                                 $result = db_query("DELETE FROM ttrss_user_entries
 221                                         USING ttrss_entries
 222                                         WHERE ttrss_entries.id = ref_id AND
 223                                         marked = false AND
 224                                         feed_id = '$feed_id' AND
 225                                         $query_limit
 226                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 227                         }
 228
 229                 } else {
 230
 231 /*                      $result = db_query("DELETE FROM ttrss_user_entries WHERE
 232                                 marked = false AND feed_id = '$feed_id' AND
 233                                 (SELECT date_updated FROM ttrss_entries WHERE
 234                                         id = ref_id) < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)"); */
 235
 236                         $result = db_query("DELETE FROM ttrss_user_entries
 237                                 USING ttrss_user_entries, ttrss_entries
 238                                 WHERE ttrss_entries.id = ref_id AND
 239                                 marked = false AND
 240                                 feed_id = '$feed_id' AND
 241                                 $query_limit
 242                                 ttrss_entries.date_updated < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)");
 243                 }
 244
 245                 $rows = db_affected_rows($result);
 246
 247                 ccache_update($feed_id, $owner_uid);
 248
 249                 if ($debug) {
 250                         _debug("Purged feed $feed_id ($purge_interval): deleted $rows articles");
 251                 }
 252
 253                 return $rows;
 254         } // function purge_feed
 255
 256         function feed_purge_interval($feed_id) {
 257
 258                 $result = db_query("SELECT purge_interval, owner_uid FROM ttrss_feeds
 259                         WHERE id = '$feed_id'");
 260
 261                 if (db_num_rows($result) == 1) {
 262                         $purge_interval = db_fetch_result($result, 0, "purge_interval");
 263                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 264
 265                         if ($purge_interval == 0) $purge_interval = get_pref(
 266                                 'PURGE_OLD_DAYS', $owner_uid);
 267
 268                         return $purge_interval;
 269
 270                 } else {
 271                         return -1;
 272                 }
 273         }
 274
 275         function purge_orphans($do_output = false) {
 276
 277                 // purge orphaned posts in main content table
 278                 $result = db_query("DELETE FROM ttrss_entries WHERE
 279                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
 280
 281                 if ($do_output) {
 282                         $rows = db_affected_rows($result);
 283                         _debug("Purged $rows orphaned posts.");
 284                 }
 285         }
 286
 287         function get_feed_update_interval($feed_id) {
 288                 $result = db_query("SELECT owner_uid, update_interval FROM
 289                         ttrss_feeds WHERE id = '$feed_id'");
 290
 291                 if (db_num_rows($result) == 1) {
 292                         $update_interval = db_fetch_result($result, 0, "update_interval");
 293                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 294
 295                         if ($update_interval != 0) {
 296                                 return $update_interval;
 297                         } else {
 298                                 return get_pref('DEFAULT_UPDATE_INTERVAL', $owner_uid, false);
 299                         }
 300
 301                 } else {
 302                         return -1;
 303                 }
 304         }
 305
 306         function fetch_file_contents($url, $type = false, $login = false, $pass = false, $post_query = false, $timeout = false, $timestamp = 0) {
 307
 308                 global $fetch_last_error;
 309                 global $fetch_last_error_code;
 310                 global $fetch_last_content_type;
 311                 global $fetch_curl_used;
 312
 313                 $url = str_replace(' ', '%20', $url);
 314
 315                 if (!defined('NO_CURL') && function_exists('curl_init')) {
 316
 317                         $fetch_curl_used = true;
 318
 319                         if (ini_get("safe_mode") || ini_get("open_basedir")) {
 320                                 $ch = curl_init(geturl($url));
 321                         } else {
 322                                 $ch = curl_init($url);
 323                         }
 324
 325                         if ($timestamp && !$post_query) {
 326                                 curl_setopt($ch, CURLOPT_HTTPHEADER,
 327                                         array("If-Modified-Since: ".gmdate('D, d M Y H:i:s \G\M\T', $timestamp)));
 328                         }
 329
 330                         curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout ? $timeout : FILE_FETCH_CONNECT_TIMEOUT);
 331                         curl_setopt($ch, CURLOPT_TIMEOUT, $timeout ? $timeout : FILE_FETCH_TIMEOUT);
 332                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, !ini_get("safe_mode") && !ini_get("open_basedir"));
 333                         curl_setopt($ch, CURLOPT_MAXREDIRS, 20);
 334                         curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
 335                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 336                         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 337                         curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 338                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 339                         curl_setopt($ch, CURLOPT_ENCODING, "");
 340                         curl_setopt($ch, CURLOPT_REFERER, $url);
 341
 342                         if ($post_query) {
 343                                 curl_setopt($ch, CURLOPT_POST, true);
 344                                 curl_setopt($ch, CURLOPT_POSTFIELDS, $post_query);
 345                         }
 346
 347                         if ($login && $pass)
 348                                 curl_setopt($ch, CURLOPT_USERPWD, "$login:$pass");
 349
 350                         $contents = @curl_exec($ch);
 351
 352                         if (curl_errno($ch) === 23 || curl_errno($ch) === 61) {
 353                                 curl_setopt($ch, CURLOPT_ENCODING, 'none');
 354                                 $contents = @curl_exec($ch);
 355                         }
 356
 357                         if ($contents === false) {
 358                                 $fetch_last_error = curl_errno($ch) . " " . curl_error($ch);
 359                                 curl_close($ch);
 360                                 return false;
 361                         }
 362
 363                         $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 364                         $fetch_last_content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 365
 366                         $fetch_last_error_code = $http_code;
 367
 368                         if ($http_code != 200 || $type && strpos($fetch_last_content_type, "$type") === false) {
 369                                 if (curl_errno($ch) != 0) {
 370                                         $fetch_last_error = curl_errno($ch) . " " . curl_error($ch);
 371                                 } else {
 372                                         $fetch_last_error = "HTTP Code: $http_code";
 373                                 }
 374                                 curl_close($ch);
 375                                 return false;
 376                         }
 377
 378                         curl_close($ch);
 379
 380                         return $contents;
 381                 } else {
 382
 383                         $fetch_curl_used = false;
 384
 385                         if ($login && $pass){
 386                                 $url_parts = array();
 387
 388                                 preg_match("/(^[^:]*):\/\/(.*)/", $url, $url_parts);
 389
 390                                 $pass = urlencode($pass);
 391
 392                                 if ($url_parts[1] && $url_parts[2]) {
 393                                         $url = $url_parts[1] . "://$login:$pass@" . $url_parts[2];
 394                                 }
 395                         }
 396
 397                         if (!$post_query && $timestamp) {
 398                                 $context = stream_context_create(array(
 399                                         'http' => array(
 400                                                 'method' => 'GET',
 401                                                 'header' => "If-Modified-Since: ".gmdate("D, d M Y H:i:s \\G\\M\\T\r\n", $timestamp)
 402                                         )));
 403                         } else {
 404                                 $context = NULL;
 405                         }
 406
 407                         $old_error = error_get_last();
 408
 409                         $data = @file_get_contents($url, false, $context);
 410
 411                         $fetch_last_content_type = false;  // reset if no type was sent from server
 412                         if (isset($http_response_header) && is_array($http_response_header)) {
 413                                 foreach ($http_response_header as $h) {
 414                                         if (substr(strtolower($h), 0, 13) == 'content-type:') {
 415                                                 $fetch_last_content_type = substr($h, 14);
 416                                                 // don't abort here b/c there might be more than one
 417                                                 // e.g. if we were being redirected -- last one is the right one
 418                                         }
 419
 420                                         if (substr(strtolower($h), 0, 7) == 'http/1.') {
 421                                                 $fetch_last_error_code = (int) substr($h, 9, 3);
 422                                         }
 423                                 }
 424                         }
 425
 426                         if (!$data) {
 427                                 $error = error_get_last();
 428
 429                                 if ($error['message'] != $old_error['message']) {
 430                                         $fetch_last_error = $error["message"];
 431                                 } else {
 432                                         $fetch_last_error = "HTTP Code: $fetch_last_error_code";
 433                                 }
 434                         }
 435                         return $data;
 436                 }
 437
 438         }
 439
 440         /**
 441          * Try to determine the favicon URL for a feed.
 442          * adapted from wordpress favicon plugin by Jeff Minard (http://thecodepro.com/)
 443          * http://dev.wp-plugins.org/file/favatars/trunk/favatars.php
 444          *
 445          * @param string $url A feed or page URL
 446          * @access public
 447          * @return mixed The favicon URL, or false if none was found.
 448          */
 449         function get_favicon_url($url) {
 450
 451                 $favicon_url = false;
 452
 453                 if ($html = @fetch_file_contents($url)) {
 454
 455                         libxml_use_internal_errors(true);
 456
 457                         $doc = new DOMDocument();
 458                         $doc->loadHTML($html);
 459                         $xpath = new DOMXPath($doc);
 460
 461                         $base = $xpath->query('/html/head/base');
 462                         foreach ($base as $b) {
 463                                 $url = $b->getAttribute("href");
 464                                 break;
 465                         }
 466
 467                         $entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon"]');
 468                         if (count($entries) > 0) {
 469                                 foreach ($entries as $entry) {
 470                                         $favicon_url = rewrite_relative_url($url, $entry->getAttribute("href"));
 471                                         break;
 472                                 }
 473                         }
 474                 }
 475
 476                 if (!$favicon_url)
 477                         $favicon_url = rewrite_relative_url($url, "/favicon.ico");
 478
 479                 return $favicon_url;
 480         } // function get_favicon_url
 481
 482         function check_feed_favicon($site_url, $feed) {
 483 #               print "FAVICON [$site_url]: $favicon_url\n";
 484
 485                 $icon_file = ICONS_DIR . "/$feed.ico";
 486
 487                 if (!file_exists($icon_file)) {
 488                         $favicon_url = get_favicon_url($site_url);
 489
 490                         if ($favicon_url) {
 491                                 // Limiting to "image" type misses those served with text/plain
 492                                 $contents = fetch_file_contents($favicon_url); // , "image");
 493
 494                                 if ($contents) {
 495                                         // Crude image type matching.
 496                                         // Patterns gleaned from the file(1) source code.
 497                                         if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
 498                                                 // 0       string  \000\000\001\000        MS Windows icon resource
 499                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
 500                                         }
 501                                         elseif (preg_match('/^GIF8/', $contents)) {
 502                                                 // 0       string          GIF8            GIF image data
 503                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
 504                                         }
 505                                         elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
 506                                                 // 0       string          \x89PNG\x0d\x0a\x1a\x0a         PNG image data
 507                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
 508                                         }
 509                                         elseif (preg_match('/^\xff\xd8/', $contents)) {
 510                                                 // 0       beshort         0xffd8          JPEG image data
 511                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
 512                                         }
 513                                         else {
 514                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
 515                                                 $contents = "";
 516                                         }
 517                                 }
 518
 519                                 if ($contents) {
 520                                         $fp = @fopen($icon_file, "w");
 521
 522                                         if ($fp) {
 523                                                 fwrite($fp, $contents);
 524                                                 fclose($fp);
 525                                                 chmod($icon_file, 0644);
 526                                         }
 527                                 }
 528                         }
 529             return $icon_file;
 530                 }
 531         }
 532
 533         function print_select($id, $default, $values, $attributes = "") {
 534                 print "<select name=\"$id\" id=\"$id\" $attributes>";
 535                 foreach ($values as $v) {
 536                         if ($v == $default)
 537                                 $sel = "selected=\"1\"";
 538                          else
 539                                 $sel = "";
 540
 541                         $v = trim($v);
 542
 543                         print "<option value=\"$v\" $sel>$v</option>";
 544                 }
 545                 print "</select>";
 546         }
 547
 548         function print_select_hash($id, $default, $values, $attributes = "") {
 549                 print "<select name=\"$id\" id='$id' $attributes>";
 550                 foreach (array_keys($values) as $v) {
 551                         if ($v == $default)
 552                                 $sel = 'selected="selected"';
 553                          else
 554                                 $sel = "";
 555
 556                         $v = trim($v);
 557
 558                         print "<option $sel value=\"$v\">".$values[$v]."</option>";
 559                 }
 560
 561                 print "</select>";
 562         }
 563
 564         function print_radio($id, $default, $true_is, $values, $attributes = "") {
 565                 foreach ($values as $v) {
 566
 567                         if ($v == $default)
 568                                 $sel = "checked";
 569                          else
 570                                 $sel = "";
 571
 572                         if ($v == $true_is) {
 573                                 $sel .= " value=\"1\"";
 574                         } else {
 575                                 $sel .= " value=\"0\"";
 576                         }
 577
 578                         print "<input class=\"noborder\" dojoType=\"dijit.form.RadioButton\"
 579                                 type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 580
 581                 }
 582         }
 583
 584         function initialize_user_prefs($uid, $profile = false) {
 585
 586                 $uid = db_escape_string($uid);
 587
 588                 if (!$profile) {
 589                         $profile = "NULL";
 590                         $profile_qpart = "AND profile IS NULL";
 591                 } else {
 592                         $profile_qpart = "AND profile = '$profile'";
 593                 }
 594
 595                 if (get_schema_version() < 63) $profile_qpart = "";
 596
 597                 db_query("BEGIN");
 598
 599                 $result = db_query("SELECT pref_name,def_value FROM ttrss_prefs");
 600
 601                 $u_result = db_query("SELECT pref_name
 602                         FROM ttrss_user_prefs WHERE owner_uid = '$uid' $profile_qpart");
 603
 604                 $active_prefs = array();
 605
 606                 while ($line = db_fetch_assoc($u_result)) {
 607                         array_push($active_prefs, $line["pref_name"]);
 608                 }
 609
 610                 while ($line = db_fetch_assoc($result)) {
 611                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 612 //                              print "adding " . $line["pref_name"] . "<br>";
 613
 614                                 $line["def_value"] = db_escape_string($line["def_value"]);
 615                                 $line["pref_name"] = db_escape_string($line["pref_name"]);
 616
 617                                 if (get_schema_version() < 63) {
 618                                         db_query("INSERT INTO ttrss_user_prefs
 619                                                 (owner_uid,pref_name,value) VALUES
 620                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 621
 622                                 } else {
 623                                         db_query("INSERT INTO ttrss_user_prefs
 624                                                 (owner_uid,pref_name,value, profile) VALUES
 625                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."', $profile)");
 626                                 }
 627
 628                         }
 629                 }
 630
 631                 db_query("COMMIT");
 632
 633         }
 634
 635         function get_ssl_certificate_id() {
 636                 if ($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"]) {
 637                         return sha1($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"] .
 638                                 $_SERVER["REDIRECT_SSL_CLIENT_V_START"] .
 639                                 $_SERVER["REDIRECT_SSL_CLIENT_V_END"] .
 640                                 $_SERVER["REDIRECT_SSL_CLIENT_S_DN"]);
 641                 }
 642                 return "";
 643         }
 644
 645         function authenticate_user($login, $password, $check_only = false) {
 646
 647                 if (!SINGLE_USER_MODE) {
 648                         $user_id = false;
 649
 650                         foreach (PluginHost::getInstance()->get_hooks(PluginHost::HOOK_AUTH_USER) as $plugin) {
 651
 652                                 $user_id = (int) $plugin->authenticate($login, $password);
 653
 654                                 if ($user_id) {
 655                                         $_SESSION["auth_module"] = strtolower(get_class($plugin));
 656                                         break;
 657                                 }
 658                         }
 659
 660                         if ($user_id && !$check_only) {
 661                                 @session_start();
 662
 663                                 $_SESSION["uid"] = $user_id;
 664                                 $_SESSION["version"] = VERSION_STATIC;
 665
 666                                 $result = db_query("SELECT login,access_level,pwd_hash FROM ttrss_users
 667                                         WHERE id = '$user_id'");
 668
 669                                 $_SESSION["name"] = db_fetch_result($result, 0, "login");
 670                                 $_SESSION["access_level"] = db_fetch_result($result, 0, "access_level");
 671                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 672
 673                                 db_query("UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 674                                         $_SESSION["uid"]);
 675
 676                                 $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 677                                 $_SESSION["user_agent"] = sha1($_SERVER['HTTP_USER_AGENT']);
 678                                 $_SESSION["pwd_hash"] = db_fetch_result($result, 0, "pwd_hash");
 679
 680                                 $_SESSION["last_version_check"] = time();
 681
 682                                 initialize_user_prefs($_SESSION["uid"]);
 683
 684                                 return true;
 685                         }
 686
 687                         return false;
 688
 689                 } else {
 690
 691                         $_SESSION["uid"] = 1;
 692                         $_SESSION["name"] = "admin";
 693                         $_SESSION["access_level"] = 10;
 694
 695                         $_SESSION["hide_hello"] = true;
 696                         $_SESSION["hide_logout"] = true;
 697
 698                         $_SESSION["auth_module"] = false;
 699
 700                         if (!$_SESSION["csrf_token"]) {
 701                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 702                         }
 703
 704                         $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 705
 706                         initialize_user_prefs($_SESSION["uid"]);
 707
 708                         return true;
 709                 }
 710         }
 711
 712         function make_password($length = 8) {
 713
 714                 $password = "";
 715                 $possible = "0123456789abcdfghjkmnpqrstvwxyzABCDFGHJKMNPQRSTVWXYZ";
 716
 717         $i = 0;
 718
 719                 while ($i < $length) {
 720                         $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 721
 722                         if (!strstr($password, $char)) {
 723                                 $password .= $char;
 724                                 $i++;
 725                         }
 726                 }
 727                 return $password;
 728         }
 729
 730         // this is called after user is created to initialize default feeds, labels
 731         // or whatever else
 732
 733         // user preferences are checked on every login, not here
 734
 735         function initialize_user($uid) {
 736
 737                 db_query("insert into ttrss_feeds (owner_uid,title,feed_url)
 738                         values ('$uid', 'Tiny Tiny RSS: New Releases',
 739                         'http://tt-rss.org/releases.rss')");
 740
 741                 db_query("insert into ttrss_feeds (owner_uid,title,feed_url)
 742                         values ('$uid', 'Tiny Tiny RSS: Forum',
 743                                 'http://tt-rss.org/forum/rss.php')");
 744         }
 745
 746         function logout_user() {
 747                 session_destroy();
 748                 if (isset($_COOKIE[session_name()])) {
 749                    setcookie(session_name(), '', time()-42000, '/');
 750                 }
 751         }
 752
 753         function validate_csrf($csrf_token) {
 754                 return $csrf_token == $_SESSION['csrf_token'];
 755         }
 756
 757         function load_user_plugins($owner_uid) {
 758                 if ($owner_uid) {
 759                         $plugins = get_pref("_ENABLED_PLUGINS", $owner_uid);
 760
 761                         PluginHost::getInstance()->load($plugins, PluginHost::KIND_USER, $owner_uid);
 762
 763                         if (get_schema_version() > 100) {
 764                                 PluginHost::getInstance()->load_data();
 765                         }
 766                 }
 767         }
 768
 769         function login_sequence() {
 770                 if (SINGLE_USER_MODE) {
 771                         @session_start();
 772                         authenticate_user("admin", null);
 773                         load_user_plugins($_SESSION["uid"]);
 774                 } else {
 775                         if (!validate_session()) $_SESSION["uid"] = false;
 776
 777                         if (!$_SESSION["uid"]) {
 778
 779                                 if (AUTH_AUTO_LOGIN && authenticate_user(null, null)) {
 780                                     $_SESSION["ref_schema_version"] = get_schema_version(true);
 781                                 } else {
 782                                          authenticate_user(null, null, true);
 783                                 }
 784
 785                                 if (!$_SESSION["uid"]) {
 786                                         @session_destroy();
 787                                         setcookie(session_name(), '', time()-42000, '/');
 788
 789                                         render_login_form();
 790                                         exit;
 791                                 }
 792
 793                         } else {
 794                                 /* bump login timestamp */
 795                                 db_query("UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 796                                         $_SESSION["uid"]);
 797                                 $_SESSION["last_login_update"] = time();
 798                         }
 799
 800                         if ($_SESSION["uid"]) {
 801                                 startup_gettext();
 802                                 load_user_plugins($_SESSION["uid"]);
 803
 804                                 /* cleanup ccache */
 805
 806                                 db_query("DELETE FROM ttrss_counters_cache WHERE owner_uid = ".
 807                                         $_SESSION["uid"] . " AND
 808                                                 (SELECT COUNT(id) FROM ttrss_feeds WHERE
 809                                                         ttrss_feeds.id = feed_id) = 0");
 810
 811                                 db_query("DELETE FROM ttrss_cat_counters_cache WHERE owner_uid = ".
 812                                         $_SESSION["uid"] . " AND
 813                                                 (SELECT COUNT(id) FROM ttrss_feed_categories WHERE
 814                                                         ttrss_feed_categories.id = feed_id) = 0");
 815
 816                         }
 817
 818                 }
 819         }
 820
 821         function truncate_string($str, $max_len, $suffix = '&hellip;') {
 822                 if (mb_strlen($str, "utf-8") > $max_len - 3) {
 823                         return mb_substr($str, 0, $max_len, "utf-8") . $suffix;
 824                 } else {
 825                         return $str;
 826                 }
 827         }
 828
 829         function convert_timestamp($timestamp, $source_tz, $dest_tz) {
 830
 831                 try {
 832                         $source_tz = new DateTimeZone($source_tz);
 833                 } catch (Exception $e) {
 834                         $source_tz = new DateTimeZone('UTC');
 835                 }
 836
 837                 try {
 838                         $dest_tz = new DateTimeZone($dest_tz);
 839                 } catch (Exception $e) {
 840                         $dest_tz = new DateTimeZone('UTC');
 841                 }
 842
 843                 $dt = new DateTime(date('Y-m-d H:i:s', $timestamp), $source_tz);
 844                 return $dt->format('U') + $dest_tz->getOffset($dt);
 845         }
 846
 847         function make_local_datetime($timestamp, $long, $owner_uid = false,
 848                                         $no_smart_dt = false) {
 849
 850                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 851                 if (!$timestamp) $timestamp = '1970-01-01 0:00';
 852
 853                 global $utc_tz;
 854                 global $user_tz;
 855
 856                 if (!$utc_tz) $utc_tz = new DateTimeZone('UTC');
 857
 858                 $timestamp = substr($timestamp, 0, 19);
 859
 860                 # We store date in UTC internally
 861                 $dt = new DateTime($timestamp, $utc_tz);
 862
 863                 $user_tz_string = get_pref('USER_TIMEZONE', $owner_uid);
 864
 865                 if ($user_tz_string != 'Automatic') {
 866
 867                         try {
 868                                 if (!$user_tz) $user_tz = new DateTimeZone($user_tz_string);
 869                         } catch (Exception $e) {
 870                                 $user_tz = $utc_tz;
 871                         }
 872
 873                         $tz_offset = $user_tz->getOffset($dt);
 874                 } else {
 875                         $tz_offset = (int) -$_SESSION["clientTzOffset"];
 876                 }
 877
 878                 $user_timestamp = $dt->format('U') + $tz_offset;
 879
 880                 if (!$no_smart_dt) {
 881                         return smart_date_time($user_timestamp,
 882                                 $tz_offset, $owner_uid);
 883                 } else {
 884                         if ($long)
 885                                 $format = get_pref('LONG_DATE_FORMAT', $owner_uid);
 886                         else
 887                                 $format = get_pref('SHORT_DATE_FORMAT', $owner_uid);
 888
 889                         return date($format, $user_timestamp);
 890                 }
 891         }
 892
 893         function smart_date_time($timestamp, $tz_offset = 0, $owner_uid = false) {
 894                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
 895
 896                 if (date("Y.m.d", $timestamp) == date("Y.m.d", time() + $tz_offset)) {
 897                         return date("G:i", $timestamp);
 898                 } else if (date("Y", $timestamp) == date("Y", time() + $tz_offset)) {
 899                         $format = get_pref('SHORT_DATE_FORMAT', $owner_uid);
 900                         return date($format, $timestamp);
 901                 } else {
 902                         $format = get_pref('LONG_DATE_FORMAT', $owner_uid);
 903                         return date($format, $timestamp);
 904                 }
 905         }
 906
 907         function sql_bool_to_bool($s) {
 908                 if ($s == "t" || $s == "1" || strtolower($s) == "true") {
 909                         return true;
 910                 } else {
 911                         return false;
 912                 }
 913         }
 914
 915         function bool_to_sql_bool($s) {
 916                 if ($s) {
 917                         return "true";
 918                 } else {
 919                         return "false";
 920                 }
 921         }
 922
 923         // Session caching removed due to causing wrong redirects to upgrade
 924         // script when get_schema_version() is called on an obsolete session
 925         // created on a previous schema version.
 926         function get_schema_version($nocache = false) {
 927                 global $schema_version;
 928
 929                 if (!$schema_version && !$nocache) {
 930                         $result = db_query("SELECT schema_version FROM ttrss_version");
 931                         $version = db_fetch_result($result, 0, "schema_version");
 932                         $schema_version = $version;
 933                         return $version;
 934                 } else {
 935                         return $schema_version;
 936                 }
 937         }
 938
 939         function sanity_check() {
 940                 require_once 'errors.php';
 941
 942                 $error_code = 0;
 943                 $schema_version = get_schema_version(true);
 944
 945                 if ($schema_version != SCHEMA_VERSION) {
 946                         $error_code = 5;
 947                 }
 948
 949                 if (DB_TYPE == "mysql") {
 950                         $result = db_query("SELECT true", false);
 951                         if (db_num_rows($result) != 1) {
 952                                 $error_code = 10;
 953                         }
 954                 }
 955
 956                 if (db_escape_string("testTEST") != "testTEST") {
 957                         $error_code = 12;
 958                 }
 959
 960                 return array("code" => $error_code, "message" => $ERRORS[$error_code]);
 961         }
 962
 963         function file_is_locked($filename) {
 964                 if (function_exists('flock')) {
 965                         $fp = @fopen(LOCK_DIRECTORY . "/$filename", "r");
 966                         if ($fp) {
 967                                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 968                                         flock($fp, LOCK_UN);
 969                                         fclose($fp);
 970                                         return false;
 971                                 }
 972                                 fclose($fp);
 973                                 return true;
 974                         } else {
 975                                 return false;
 976                         }
 977                 }
 978                 return true; // consider the file always locked and skip the test
 979         }
 980
 981         function make_lockfile($filename) {
 982                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
 983
 984                 if ($fp && flock($fp, LOCK_EX | LOCK_NB)) {
 985                         if (function_exists('posix_getpid')) {
 986                                 fwrite($fp, posix_getpid() . "\n");
 987                         }
 988                         return $fp;
 989                 } else {
 990                         return false;
 991                 }
 992         }
 993
 994         function make_stampfile($filename) {
 995                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
 996
 997                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 998                         fwrite($fp, time() . "\n");
 999                         flock($fp, LOCK_UN);
1000                         fclose($fp);
1001                         return true;
1002                 } else {
1003                         return false;
1004                 }
1005         }
1006
1007         function sql_random_function() {
1008                 if (DB_TYPE == "mysql") {
1009                         return "RAND()";
1010                 } else {
1011                         return "RANDOM()";
1012                 }
1013         }
1014
1015         function catchup_feed($feed, $cat_view, $owner_uid = false, $max_id = false, $mode = 'all') {
1016
1017                         if (!$owner_uid) $owner_uid = $_SESSION['uid'];
1018
1019                         //if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
1020
1021                         // Todo: all this interval stuff needs some generic generator function
1022
1023                         $date_qpart = "false";
1024
1025                         switch ($mode) {
1026                         case "1day":
1027                                 if (DB_TYPE == "pgsql") {
1028                                         $date_qpart = "date_entered < NOW() - INTERVAL '1 day' ";
1029                                 } else {
1030                                         $date_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 1 DAY) ";
1031                                 }
1032                                 break;
1033                         case "1week":
1034                                 if (DB_TYPE == "pgsql") {
1035                                         $date_qpart = "date_entered < NOW() - INTERVAL '1 week' ";
1036                                 } else {
1037                                         $date_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 1 WEEK) ";
1038                                 }
1039                                 break;
1040                         case "2weeks":
1041                                 if (DB_TYPE == "pgsql") {
1042                                         $date_qpart = "date_entered < NOW() - INTERVAL '2 week' ";
1043                                 } else {
1044                                         $date_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 2 WEEK) ";
1045                                 }
1046                                 break;
1047                         default:
1048                                 $date_qpart = "true";
1049                         }
1050
1051                         if (is_numeric($feed)) {
1052                                 if ($cat_view) {
1053
1054                                         if ($feed >= 0) {
1055
1056                                                 if ($feed > 0) {
1057                                                         $children = getChildCategories($feed, $owner_uid);
1058                                                         array_push($children, $feed);
1059
1060                                                         $children = join(",", $children);
1061
1062                                                         $cat_qpart = "cat_id IN ($children)";
1063                                                 } else {
1064                                                         $cat_qpart = "cat_id IS NULL";
1065                                                 }
1066
1067                                                 db_query("UPDATE ttrss_user_entries
1068                                                         SET unread = false, last_read = NOW() WHERE ref_id IN
1069                                                                 (SELECT id FROM
1070                                                                         (SELECT id FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id
1071                                                                                 AND owner_uid = $owner_uid AND unread = true AND feed_id IN
1072                                                                                         (SELECT id FROM ttrss_feeds WHERE $cat_qpart) AND $date_qpart) as tmp)");
1073
1074                                         } else if ($feed == -2) {
1075
1076                                                 db_query("UPDATE ttrss_user_entries
1077                                                         SET unread = false,last_read = NOW() WHERE (SELECT COUNT(*)
1078                                                                 FROM ttrss_user_labels2 WHERE article_id = ref_id) > 0
1079                                                                 AND unread = true AND $date_qpart AND owner_uid = $owner_uid");
1080                                         }
1081
1082                                 } else if ($feed > 0) {
1083
1084                                         db_query("UPDATE ttrss_user_entries
1085                                                 SET unread = false, last_read = NOW() WHERE ref_id IN
1086                                                         (SELECT id FROM
1087                                                                 (SELECT id FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id
1088                                                                         AND owner_uid = $owner_uid AND unread = true AND feed_id = $feed AND $date_qpart) as tmp)");
1089
1090                                 } else if ($feed < 0 && $feed > LABEL_BASE_INDEX) { // special, like starred
1091
1092                                         if ($feed == -1) {
1093                                                 db_query("UPDATE ttrss_user_entries
1094                                                         SET unread = false, last_read = NOW() WHERE ref_id IN
1095                                                                 (SELECT id FROM
1096                                                                         (SELECT id FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id
1097                                                                                 AND owner_uid = $owner_uid AND unread = true AND marked = true AND $date_qpart) as tmp)");
1098                                         }
1099
1100                                         if ($feed == -2) {
1101                                                 db_query("UPDATE ttrss_user_entries
1102                                                         SET unread = false, last_read = NOW() WHERE ref_id IN
1103                                                                 (SELECT id FROM
1104                                                                         (SELECT id FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id
1105                                                                                 AND owner_uid = $owner_uid AND unread = true AND published = true AND $date_qpart) as tmp)");
1106                                         }
1107
1108                                         if ($feed == -3) {
1109
1110                                                 $intl = get_pref("FRESH_ARTICLE_MAX_AGE");
1111
1112                                                 if (DB_TYPE == "pgsql") {
1113                                                         $match_part = "date_entered > NOW() - INTERVAL '$intl hour' ";
1114                                                 } else {
1115                                                         $match_part = "date_entered > DATE_SUB(NOW(),
1116                                                                 INTERVAL $intl HOUR) ";
1117                                                 }
1118
1119                                                 db_query("UPDATE ttrss_user_entries
1120                                                         SET unread = false, last_read = NOW() WHERE ref_id IN
1121                                                                 (SELECT id FROM
1122                                                                         (SELECT id FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id
1123                                                                                 AND owner_uid = $owner_uid AND unread = true AND $date_qpart AND $match_part) as tmp)");
1124                                         }
1125
1126                                         if ($feed == -4) {
1127                                                 db_query("UPDATE ttrss_user_entries
1128                                                         SET unread = false, last_read = NOW() WHERE ref_id IN
1129                                                                 (SELECT id FROM
1130                                                                         (SELECT id FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id
1131                                                                                 AND owner_uid = $owner_uid AND unread = true AND $date_qpart) as tmp)");
1132                                         }
1133
1134                                 } else if ($feed < LABEL_BASE_INDEX) { // label
1135
1136                                         $label_id = feed_to_label_id($feed);
1137
1138                                         db_query("UPDATE ttrss_user_entries
1139                                                 SET unread = false, last_read = NOW() WHERE ref_id IN
1140                                                         (SELECT id FROM
1141                                                                 (SELECT ttrss_entries.id FROM ttrss_entries, ttrss_user_entries, ttrss_user_labels2 WHERE ref_id = id
1142                                                                         AND label_id = '$label_id' AND ref_id = article_id
1143                                                                         AND owner_uid = $owner_uid AND unread = true AND $date_qpart) as tmp)");
1144
1145                                 }
1146
1147                                 ccache_update($feed, $owner_uid, $cat_view);
1148
1149                         } else { // tag
1150                                 db_query("UPDATE ttrss_user_entries
1151                                         SET unread = false, last_read = NOW() WHERE ref_id IN
1152                                                 (SELECT id FROM
1153                                                         (SELECT ttrss_entries.id FROM ttrss_entries, ttrss_user_entries, ttrss_tags WHERE ref_id = ttrss_entries.id
1154                                                                 AND post_int_id = int_id AND tag_name = '$feed'
1155                                                                 AND ttrss_user_entries.owner_uid = $owner_uid AND unread = true AND $date_qpart) as tmp)");
1156
1157                         }
1158         }
1159
1160         function getAllCounters() {
1161                 $data = getGlobalCounters();
1162
1163                 $data = array_merge($data, getVirtCounters());
1164                 $data = array_merge($data, getLabelCounters());
1165                 $data = array_merge($data, getFeedCounters($active_feed));
1166                 $data = array_merge($data, getCategoryCounters());
1167
1168                 return $data;
1169         }
1170
1171         function getCategoryTitle($cat_id) {
1172
1173                 if ($cat_id == -1) {
1174                         return __("Special");
1175                 } else if ($cat_id == -2) {
1176                         return __("Labels");
1177                 } else {
1178
1179                         $result = db_query("SELECT title FROM ttrss_feed_categories WHERE
1180                                 id = '$cat_id'");
1181
1182                         if (db_num_rows($result) == 1) {
1183                                 return db_fetch_result($result, 0, "title");
1184                         } else {
1185                                 return __("Uncategorized");
1186                         }
1187                 }
1188         }
1189
1190
1191         function getCategoryCounters() {
1192                 $ret_arr = array();
1193
1194                 /* Labels category */
1195
1196                 $cv = array("id" => -2, "kind" => "cat",
1197                         "counter" => getCategoryUnread(-2));
1198
1199                 array_push($ret_arr, $cv);
1200
1201                 $result = db_query("SELECT id AS cat_id, value AS unread,
1202                         (SELECT COUNT(id) FROM ttrss_feed_categories AS c2
1203                                 WHERE c2.parent_cat = ttrss_feed_categories.id) AS num_children
1204                         FROM ttrss_feed_categories, ttrss_cat_counters_cache
1205                         WHERE ttrss_cat_counters_cache.feed_id = id AND
1206                         ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid AND
1207                         ttrss_feed_categories.owner_uid = " . $_SESSION["uid"]);
1208
1209                 while ($line = db_fetch_assoc($result)) {
1210                         $line["cat_id"] = (int) $line["cat_id"];
1211
1212                         if ($line["num_children"] > 0) {
1213                                 $child_counter = getCategoryChildrenUnread($line["cat_id"], $_SESSION["uid"]);
1214                         } else {
1215                                 $child_counter = 0;
1216                         }
1217
1218                         $cv = array("id" => $line["cat_id"], "kind" => "cat",
1219                                 "counter" => $line["unread"] + $child_counter);
1220
1221                         array_push($ret_arr, $cv);
1222                 }
1223
1224                 /* Special case: NULL category doesn't actually exist in the DB */
1225
1226                 $cv = array("id" => 0, "kind" => "cat",
1227                         "counter" => (int) ccache_find(0, $_SESSION["uid"], true));
1228
1229                 array_push($ret_arr, $cv);
1230
1231                 return $ret_arr;
1232         }
1233
1234         // only accepts real cats (>= 0)
1235         function getCategoryChildrenUnread($cat, $owner_uid = false) {
1236                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1237
1238                 $result = db_query("SELECT id FROM ttrss_feed_categories WHERE parent_cat = '$cat'
1239                                 AND owner_uid = $owner_uid");
1240
1241                 $unread = 0;
1242
1243                 while ($line = db_fetch_assoc($result)) {
1244                         $unread += getCategoryUnread($line["id"], $owner_uid);
1245                         $unread += getCategoryChildrenUnread($line["id"], $owner_uid);
1246                 }
1247
1248                 return $unread;
1249         }
1250
1251         function getCategoryUnread($cat, $owner_uid = false) {
1252
1253                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1254
1255                 if ($cat >= 0) {
1256
1257                         if ($cat != 0) {
1258                                 $cat_query = "cat_id = '$cat'";
1259                         } else {
1260                                 $cat_query = "cat_id IS NULL";
1261                         }
1262
1263                         $result = db_query("SELECT id FROM ttrss_feeds WHERE $cat_query
1264                                         AND owner_uid = " . $owner_uid);
1265
1266                         $cat_feeds = array();
1267                         while ($line = db_fetch_assoc($result)) {
1268                                 array_push($cat_feeds, "feed_id = " . $line["id"]);
1269                         }
1270
1271                         if (count($cat_feeds) == 0) return 0;
1272
1273                         $match_part = implode(" OR ", $cat_feeds);
1274
1275                         $result = db_query("SELECT COUNT(int_id) AS unread
1276                                 FROM ttrss_user_entries
1277                                 WHERE   unread = true AND ($match_part)
1278                                 AND owner_uid = " . $owner_uid);
1279
1280                         $unread = 0;
1281
1282                         # this needs to be rewritten
1283                         while ($line = db_fetch_assoc($result)) {
1284                                 $unread += $line["unread"];
1285                         }
1286
1287                         return $unread;
1288                 } else if ($cat == -1) {
1289                         return getFeedUnread(-1) + getFeedUnread($link, -2) + getFeedUnread($link, -3) + getFeedUnread($link, 0);
1290                 } else if ($cat == -2) {
1291
1292                         $result = db_query("
1293                                 SELECT COUNT(unread) AS unread FROM
1294                                         ttrss_user_entries, ttrss_user_labels2
1295                                 WHERE article_id = ref_id AND unread = true
1296                                         AND ttrss_user_entries.owner_uid = '$owner_uid'");
1297
1298                         $unread = db_fetch_result($result, 0, "unread");
1299
1300                         return $unread;
1301
1302                 }
1303         }
1304
1305         function getFeedUnread($feed, $is_cat = false) {
1306                 return getFeedArticles($feed, $is_cat, true, $_SESSION["uid"]);
1307         }
1308
1309         function getLabelUnread($label_id, $owner_uid = false) {
1310                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1311
1312                 $result = db_query("SELECT COUNT(ref_id) AS unread FROM ttrss_user_entries, ttrss_user_labels2
1313                         WHERE owner_uid = '$owner_uid' AND unread = true AND label_id = '$label_id' AND article_id = ref_id");
1314
1315                 if (db_num_rows($result) != 0) {
1316                         return db_fetch_result($result, 0, "unread");
1317                 } else {
1318                         return 0;
1319                 }
1320         }
1321
1322         function getFeedArticles($feed, $is_cat = false, $unread_only = false,
1323                 $owner_uid = false) {
1324
1325                 $n_feed = (int) $feed;
1326                 $need_entries = false;
1327
1328                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1329
1330                 if ($unread_only) {
1331                         $unread_qpart = "unread = true";
1332                 } else {
1333                         $unread_qpart = "true";
1334                 }
1335
1336                 if ($is_cat) {
1337                         return getCategoryUnread($n_feed, $owner_uid);
1338                 } else if ($n_feed == -6) {
1339                         return 0;
1340                 } else if ($feed != "0" && $n_feed == 0) {
1341
1342                         $feed = db_escape_string($feed);
1343
1344                         $result = db_query("SELECT SUM((SELECT COUNT(int_id)
1345                                 FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1346                                         AND ref_id = id AND $unread_qpart)) AS count FROM ttrss_tags
1347                                 WHERE owner_uid = $owner_uid AND tag_name = '$feed'");
1348                         return db_fetch_result($result, 0, "count");
1349
1350                 } else if ($n_feed == -1) {
1351                         $match_part = "marked = true";
1352                 } else if ($n_feed == -2) {
1353                         $match_part = "published = true";
1354                 } else if ($n_feed == -3) {
1355                         $match_part = "unread = true AND score >= 0";
1356
1357                         $intl = get_pref("FRESH_ARTICLE_MAX_AGE", $owner_uid);
1358
1359                         if (DB_TYPE == "pgsql") {
1360                                 $match_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
1361                         } else {
1362                                 $match_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
1363                         }
1364
1365                         $need_entries = true;
1366
1367                 } else if ($n_feed == -4) {
1368                         $match_part = "true";
1369                 } else if ($n_feed >= 0) {
1370
1371                         if ($n_feed != 0) {
1372                                 $match_part = "feed_id = '$n_feed'";
1373                         } else {
1374                                 $match_part = "feed_id IS NULL";
1375                         }
1376
1377                 } else if ($feed < LABEL_BASE_INDEX) {
1378
1379                         $label_id = feed_to_label_id($feed);
1380
1381                         return getLabelUnread($label_id, $owner_uid);
1382
1383                 }
1384
1385                 if ($match_part) {
1386
1387                         if ($need_entries) {
1388                                 $from_qpart = "ttrss_user_entries,ttrss_entries";
1389                                 $from_where = "ttrss_entries.id = ttrss_user_entries.ref_id AND";
1390                         } else {
1391                                 $from_qpart = "ttrss_user_entries";
1392                         }
1393
1394                         $query = "SELECT count(int_id) AS unread
1395                                 FROM $from_qpart WHERE
1396                                 $unread_qpart AND $from_where ($match_part) AND ttrss_user_entries.owner_uid = $owner_uid";
1397
1398                         //echo "[$feed/$query]\n";
1399
1400                         $result = db_query($query);
1401
1402                 } else {
1403
1404                         $result = db_query("SELECT COUNT(post_int_id) AS unread
1405                                 FROM ttrss_tags,ttrss_user_entries,ttrss_entries
1406                                 WHERE tag_name = '$feed' AND post_int_id = int_id AND ref_id = ttrss_entries.id
1407                                 AND $unread_qpart AND ttrss_tags.owner_uid = " . $owner_uid);
1408                 }
1409
1410                 $unread = db_fetch_result($result, 0, "unread");
1411
1412                 return $unread;
1413         }
1414
1415         function getGlobalUnread($user_id = false) {
1416
1417                 if (!$user_id) {
1418                         $user_id = $_SESSION["uid"];
1419                 }
1420
1421                 $result = db_query("SELECT SUM(value) AS c_id FROM ttrss_counters_cache
1422                         WHERE owner_uid = '$user_id' AND feed_id > 0");
1423
1424                 $c_id = db_fetch_result($result, 0, "c_id");
1425
1426                 return $c_id;
1427         }
1428
1429         function getGlobalCounters($global_unread = -1) {
1430                 $ret_arr = array();
1431
1432                 if ($global_unread == -1) {
1433                         $global_unread = getGlobalUnread();
1434                 }
1435
1436                 $cv = array("id" => "global-unread",
1437                         "counter" => (int) $global_unread);
1438
1439                 array_push($ret_arr, $cv);
1440
1441                 $result = db_query("SELECT COUNT(id) AS fn FROM
1442                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1443
1444                 $subscribed_feeds = db_fetch_result($result, 0, "fn");
1445
1446                 $cv = array("id" => "subscribed-feeds",
1447                         "counter" => (int) $subscribed_feeds);
1448
1449                 array_push($ret_arr, $cv);
1450
1451                 return $ret_arr;
1452         }
1453
1454         function getVirtCounters() {
1455
1456                 $ret_arr = array();
1457
1458                 for ($i = 0; $i >= -4; $i--) {
1459
1460                         $count = getFeedUnread($i);
1461
1462                         $cv = array("id" => $i,
1463                                 "counter" => (int) $count);
1464
1465 //                      if (get_pref('EXTENDED_FEEDLIST'))
1466 //                              $cv["xmsg"] = getFeedArticles($i)." ".__("total");
1467
1468                         array_push($ret_arr, $cv);
1469                 }
1470
1471                 $feeds = PluginHost::getInstance()->get_feeds(-1);
1472
1473                 if (is_array($feeds)) {
1474                         foreach ($feeds as $feed) {
1475                                 $cv = array("id" => PluginHost::pfeed_to_feed_id($feed['id']),
1476                                         "counter" => $feed['sender']->get_unread($feed['id']));
1477                                         array_push($ret_arr, $cv);
1478                         }
1479                 }
1480
1481                 return $ret_arr;
1482         }
1483
1484         function getLabelCounters($descriptions = false) {
1485
1486                 $ret_arr = array();
1487
1488                 $owner_uid = $_SESSION["uid"];
1489
1490                 $result = db_query("SELECT id,caption,COUNT(unread) AS unread
1491                         FROM ttrss_labels2 LEFT JOIN ttrss_user_labels2 ON
1492                                 (ttrss_labels2.id = label_id)
1493                                 LEFT JOIN ttrss_user_entries ON (ref_id = article_id AND unread = true
1494                                         AND ttrss_user_entries.owner_uid = $owner_uid)
1495                                 WHERE ttrss_labels2.owner_uid = $owner_uid GROUP BY ttrss_labels2.id,
1496                                         ttrss_labels2.caption");
1497
1498                 while ($line = db_fetch_assoc($result)) {
1499
1500                         $id = label_to_feed_id($line["id"]);
1501
1502                         $label_name = $line["caption"];
1503                         $count = $line["unread"];
1504
1505                         $cv = array("id" => $id,
1506                                 "counter" => (int) $count);
1507
1508                         if ($descriptions)
1509                                 $cv["description"] = $label_name;
1510
1511 //                      if (get_pref('EXTENDED_FEEDLIST'))
1512 //                              $cv["xmsg"] = getFeedArticles($id)." ".__("total");
1513
1514                         array_push($ret_arr, $cv);
1515                 }
1516
1517                 return $ret_arr;
1518         }
1519
1520         function getFeedCounters($active_feed = false) {
1521
1522                 $ret_arr = array();
1523
1524                 $query = "SELECT ttrss_feeds.id,
1525                                 ttrss_feeds.title,
1526                                 ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
1527                                 last_error, value AS count
1528                         FROM ttrss_feeds, ttrss_counters_cache
1529                         WHERE ttrss_feeds.owner_uid = ".$_SESSION["uid"]."
1530                                 AND ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid
1531                                 AND ttrss_counters_cache.feed_id = id";
1532
1533                 $result = db_query($query);
1534                 $fctrs_modified = false;
1535
1536                 while ($line = db_fetch_assoc($result)) {
1537
1538                         $id = $line["id"];
1539                         $count = $line["count"];
1540                         $last_error = htmlspecialchars($line["last_error"]);
1541
1542                         $last_updated = make_local_datetime($line['last_updated'], false);
1543
1544                         $has_img = feed_has_icon($id);
1545
1546                         if (date('Y') - date('Y', strtotime($line['last_updated'])) > 2)
1547                                 $last_updated = '';
1548
1549                         $cv = array("id" => $id,
1550                                 "updated" => $last_updated,
1551                                 "counter" => (int) $count,
1552                                 "has_img" => (int) $has_img);
1553
1554                         if ($last_error)
1555                                 $cv["error"] = $last_error;
1556
1557 //                      if (get_pref('EXTENDED_FEEDLIST'))
1558 //                              $cv["xmsg"] = getFeedArticles($id)." ".__("total");
1559
1560                         if ($active_feed && $id == $active_feed)
1561                                 $cv["title"] = truncate_string($line["title"], 30);
1562
1563                         array_push($ret_arr, $cv);
1564
1565                 }
1566
1567                 return $ret_arr;
1568         }
1569
1570         function get_pgsql_version() {
1571                 $result = db_query("SELECT version() AS version");
1572                 $version = explode(" ", db_fetch_result($result, 0, "version"));
1573                 return $version[1];
1574         }
1575
1576         /**
1577          * @return array (code => Status code, message => error message if available)
1578          *
1579          *                 0 - OK, Feed already exists
1580          *                 1 - OK, Feed added
1581          *                 2 - Invalid URL
1582          *                 3 - URL content is HTML, no feeds available
1583          *                 4 - URL content is HTML which contains multiple feeds.
1584          *                     Here you should call extractfeedurls in rpc-backend
1585          *                     to get all possible feeds.
1586          *                 5 - Couldn't download the URL content.
1587          *                 6 - Content is an invalid XML.
1588          */
1589         function subscribe_to_feed($url, $cat_id = 0,
1590                         $auth_login = '', $auth_pass = '') {
1591
1592                 global $fetch_last_error;
1593
1594                 require_once "include/rssfuncs.php";
1595
1596                 $url = fix_url($url);
1597
1598                 if (!$url || !validate_feed_url($url)) return array("code" => 2);
1599
1600                 $contents = @fetch_file_contents($url, false, $auth_login, $auth_pass);
1601
1602                 if (!$contents) {
1603                         return array("code" => 5, "message" => $fetch_last_error);
1604                 }
1605
1606                 if (is_html($contents)) {
1607                         $feedUrls = get_feeds_from_html($url, $contents);
1608
1609                         if (count($feedUrls) == 0) {
1610                                 return array("code" => 3);
1611                         } else if (count($feedUrls) > 1) {
1612                                 return array("code" => 4, "feeds" => $feedUrls);
1613                         }
1614                         //use feed url as new URL
1615                         $url = key($feedUrls);
1616                 }
1617
1618                 /* libxml_use_internal_errors(true);
1619                 $doc = new DOMDocument();
1620                 $doc->loadXML($contents);
1621                 $error = libxml_get_last_error();
1622                 libxml_clear_errors();
1623
1624                 if ($error) {
1625                         $error_message = format_libxml_error($error);
1626
1627                         return array("code" => 6, "message" => $error_message);
1628                 } */
1629
1630                 if ($cat_id == "0" || !$cat_id) {
1631                         $cat_qpart = "NULL";
1632                 } else {
1633                         $cat_qpart = "'$cat_id'";
1634                 }
1635
1636                 $result = db_query(
1637                         "SELECT id FROM ttrss_feeds
1638                         WHERE feed_url = '$url' AND owner_uid = ".$_SESSION["uid"]);
1639
1640                 if (strlen(FEED_CRYPT_KEY) > 0) {
1641                         require_once "crypt.php";
1642                         $auth_pass = substr(encrypt_string($auth_pass), 0, 250);
1643                         $auth_pass_encrypted = 'true';
1644                 } else {
1645                         $auth_pass_encrypted = 'false';
1646                 }
1647
1648                 $auth_pass = db_escape_string($auth_pass);
1649
1650                 if (db_num_rows($result) == 0) {
1651                         $result = db_query(
1652                                 "INSERT INTO ttrss_feeds
1653                                         (owner_uid,feed_url,title,cat_id, auth_login,auth_pass,update_method,auth_pass_encrypted)
1654                                 VALUES ('".$_SESSION["uid"]."', '$url',
1655                                 '[Unknown]', $cat_qpart, '$auth_login', '$auth_pass', 0, $auth_pass_encrypted)");
1656
1657                         $result = db_query(
1658                                 "SELECT id FROM ttrss_feeds WHERE feed_url = '$url'
1659                                         AND owner_uid = " . $_SESSION["uid"]);
1660
1661                         $feed_id = db_fetch_result($result, 0, "id");
1662
1663                         if ($feed_id) {
1664                                 update_rss_feed($feed_id, true);
1665                         }
1666
1667                         return array("code" => 1);
1668                 } else {
1669                         return array("code" => 0);
1670                 }
1671         }
1672
1673         function print_feed_select($id, $default_id = "",
1674                 $attributes = "", $include_all_feeds = true,
1675                 $root_id = false, $nest_level = 0) {
1676
1677                 if (!$root_id) {
1678                         print "<select id=\"$id\" name=\"$id\" $attributes>";
1679                         if ($include_all_feeds) {
1680                                 $is_selected = ("0" == $default_id) ? "selected=\"1\"" : "";
1681                                 print "<option $is_selected value=\"0\">".__('All feeds')."</option>";
1682                         }
1683                 }
1684
1685                 if (get_pref('ENABLE_FEED_CATS')) {
1686
1687                         if ($root_id)
1688                                 $parent_qpart = "parent_cat = '$root_id'";
1689                         else
1690                                 $parent_qpart = "parent_cat IS NULL";
1691
1692                         $result = db_query("SELECT id,title,
1693                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1694                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1695                                 FROM ttrss_feed_categories
1696                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1697
1698                         while ($line = db_fetch_assoc($result)) {
1699
1700                                 for ($i = 0; $i < $nest_level; $i++)
1701                                         $line["title"] = " - " . $line["title"];
1702
1703                                 $is_selected = ("CAT:".$line["id"] == $default_id) ? "selected=\"1\"" : "";
1704
1705                                 printf("<option $is_selected value='CAT:%d'>%s</option>",
1706                                         $line["id"], htmlspecialchars($line["title"]));
1707
1708                                 if ($line["num_children"] > 0)
1709                                         print_feed_select($id, $default_id, $attributes,
1710                                                 $include_all_feeds, $line["id"], $nest_level+1);
1711
1712                                 $feed_result = db_query("SELECT id,title FROM ttrss_feeds
1713                                         WHERE cat_id = '".$line["id"]."' AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1714
1715                                 while ($fline = db_fetch_assoc($feed_result)) {
1716                                         $is_selected = ($fline["id"] == $default_id) ? "selected=\"1\"" : "";
1717
1718                                         $fline["title"] = " + " . $fline["title"];
1719
1720                                         for ($i = 0; $i < $nest_level; $i++)
1721                                                 $fline["title"] = " - " . $fline["title"];
1722
1723                                         printf("<option $is_selected value='%d'>%s</option>",
1724                                                 $fline["id"], htmlspecialchars($fline["title"]));
1725                                 }
1726                         }
1727
1728                         if (!$root_id) {
1729                                 $is_selected = ($default_id == "CAT:0") ? "selected=\"1\"" : "";
1730
1731                                 printf("<option $is_selected value='CAT:0'>%s</option>",
1732                                         __("Uncategorized"));
1733
1734                                 $feed_result = db_query("SELECT id,title FROM ttrss_feeds
1735                                         WHERE cat_id IS NULL AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1736
1737                                 while ($fline = db_fetch_assoc($feed_result)) {
1738                                         $is_selected = ($fline["id"] == $default_id && !$default_is_cat) ? "selected=\"1\"" : "";
1739
1740                                         $fline["title"] = " + " . $fline["title"];
1741
1742                                         for ($i = 0; $i < $nest_level; $i++)
1743                                                 $fline["title"] = " - " . $fline["title"];
1744
1745                                         printf("<option $is_selected value='%d'>%s</option>",
1746                                                 $fline["id"], htmlspecialchars($fline["title"]));
1747                                 }
1748                         }
1749
1750                 } else {
1751                         $result = db_query("SELECT id,title FROM ttrss_feeds
1752                                 WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
1753
1754                         while ($line = db_fetch_assoc($result)) {
1755
1756                                 $is_selected = ($line["id"] == $default_id) ? "selected=\"1\"" : "";
1757
1758                                 printf("<option $is_selected value='%d'>%s</option>",
1759                                         $line["id"], htmlspecialchars($line["title"]));
1760                         }
1761                 }
1762
1763                 if (!$root_id) {
1764                         print "</select>";
1765                 }
1766         }
1767
1768         function print_feed_cat_select($id, $default_id,
1769                 $attributes, $include_all_cats = true, $root_id = false, $nest_level = 0) {
1770
1771                         if (!$root_id) {
1772                                         print "<select id=\"$id\" name=\"$id\" default=\"$default_id\" onchange=\"catSelectOnChange(this)\" $attributes>";
1773                         }
1774
1775                         if ($root_id)
1776                                 $parent_qpart = "parent_cat = '$root_id'";
1777                         else
1778                                 $parent_qpart = "parent_cat IS NULL";
1779
1780                         $result = db_query("SELECT id,title,
1781                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1782                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1783                                 FROM ttrss_feed_categories
1784                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1785
1786                         while ($line = db_fetch_assoc($result)) {
1787                                 if ($line["id"] == $default_id) {
1788                                         $is_selected = "selected=\"1\"";
1789                                 } else {
1790                                         $is_selected = "";
1791                                 }
1792
1793                                 for ($i = 0; $i < $nest_level; $i++)
1794                                         $line["title"] = " - " . $line["title"];
1795
1796                                 if ($line["title"])
1797                                         printf("<option $is_selected value='%d'>%s</option>",
1798                                                 $line["id"], htmlspecialchars($line["title"]));
1799
1800                                 if ($line["num_children"] > 0)
1801                                         print_feed_cat_select($id, $default_id, $attributes,
1802                                                 $include_all_cats, $line["id"], $nest_level+1);
1803                         }
1804
1805                         if (!$root_id) {
1806                                 if ($include_all_cats) {
1807                                         if (db_num_rows($result) > 0) {
1808                                                 print "<option disabled=\"1\">--------</option>";
1809                                         }
1810
1811                                         if ($default_id == 0) {
1812                                                 $is_selected = "selected=\"1\"";
1813                                         } else {
1814                                                 $is_selected = "";
1815                                         }
1816
1817                                         print "<option $is_selected value=\"0\">".__('Uncategorized')."</option>";
1818                                 }
1819                                 print "</select>";
1820                         }
1821                 }
1822
1823         function checkbox_to_sql_bool($val) {
1824                 return ($val == "on") ? "true" : "false";
1825         }
1826
1827         function getFeedCatTitle($id) {
1828                 if ($id == -1) {
1829                         return __("Special");
1830                 } else if ($id < LABEL_BASE_INDEX) {
1831                         return __("Labels");
1832                 } else if ($id > 0) {
1833                         $result = db_query("SELECT ttrss_feed_categories.title
1834                                 FROM ttrss_feeds, ttrss_feed_categories WHERE ttrss_feeds.id = '$id' AND
1835                                         cat_id = ttrss_feed_categories.id");
1836                         if (db_num_rows($result) == 1) {
1837                                 return db_fetch_result($result, 0, "title");
1838                         } else {
1839                                 return __("Uncategorized");
1840                         }
1841                 } else {
1842                         return "getFeedCatTitle($id) failed";
1843                 }
1844
1845         }
1846
1847         function getFeedIcon($id) {
1848                 switch ($id) {
1849                 case 0:
1850                         return "images/archive.png";
1851                         break;
1852                 case -1:
1853                         return "images/mark_set.svg";
1854                         break;
1855                 case -2:
1856                         return "images/pub_set.svg";
1857                         break;
1858                 case -3:
1859                         return "images/fresh.png";
1860                         break;
1861                 case -4:
1862                         return "images/tag.png";
1863                         break;
1864                 case -6:
1865                         return "images/recently_read.png";
1866                         break;
1867                 default:
1868                         if ($id < LABEL_BASE_INDEX) {
1869                                 return "images/label.png";
1870                         } else {
1871                                 if (file_exists(ICONS_DIR . "/$id.ico"))
1872                                         return ICONS_URL . "/$id.ico";
1873                         }
1874                         break;
1875                 }
1876
1877                 return false;
1878         }
1879
1880         function getFeedTitle($id, $cat = false) {
1881                 if ($cat) {
1882                         return getCategoryTitle($id);
1883                 } else if ($id == -1) {
1884                         return __("Starred articles");
1885                 } else if ($id == -2) {
1886                         return __("Published articles");
1887                 } else if ($id == -3) {
1888                         return __("Fresh articles");
1889                 } else if ($id == -4) {
1890                         return __("All articles");
1891                 } else if ($id === 0 || $id === "0") {
1892                         return __("Archived articles");
1893                 } else if ($id == -6) {
1894                         return __("Recently read");
1895                 } else if ($id < LABEL_BASE_INDEX) {
1896                         $label_id = feed_to_label_id($id);
1897                         $result = db_query("SELECT caption FROM ttrss_labels2 WHERE id = '$label_id'");
1898                         if (db_num_rows($result) == 1) {
1899                                 return db_fetch_result($result, 0, "caption");
1900                         } else {
1901                                 return "Unknown label ($label_id)";
1902                         }
1903
1904                 } else if (is_numeric($id) && $id > 0) {
1905                         $result = db_query("SELECT title FROM ttrss_feeds WHERE id = '$id'");
1906                         if (db_num_rows($result) == 1) {
1907                                 return db_fetch_result($result, 0, "title");
1908                         } else {
1909                                 return "Unknown feed ($id)";
1910                         }
1911                 } else {
1912                         return $id;
1913                 }
1914         }
1915
1916         function make_init_params() {
1917                 $params = array();
1918
1919                 foreach (array("ON_CATCHUP_SHOW_NEXT_FEED", "HIDE_READ_FEEDS",
1920                         "ENABLE_FEED_CATS", "FEEDS_SORT_BY_UNREAD", "CONFIRM_FEED_CATCHUP",
1921                         "CDM_AUTO_CATCHUP", "FRESH_ARTICLE_MAX_AGE",
1922                         "HIDE_READ_SHOWS_SPECIAL", "COMBINED_DISPLAY_MODE") as $param) {
1923
1924                                  $params[strtolower($param)] = (int) get_pref($param);
1925                  }
1926
1927                 $params["icons_url"] = ICONS_URL;
1928                 $params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
1929                 $params["default_view_mode"] = get_pref("_DEFAULT_VIEW_MODE");
1930                 $params["default_view_limit"] = (int) get_pref("_DEFAULT_VIEW_LIMIT");
1931                 $params["default_view_order_by"] = get_pref("_DEFAULT_VIEW_ORDER_BY");
1932                 $params["bw_limit"] = (int) $_SESSION["bw_limit"];
1933                 $params["label_base_index"] = (int) LABEL_BASE_INDEX;
1934
1935                 $result = db_query("SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
1936                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1937
1938                 $max_feed_id = db_fetch_result($result, 0, "mid");
1939                 $num_feeds = db_fetch_result($result, 0, "nf");
1940
1941                 $params["max_feed_id"] = (int) $max_feed_id;
1942                 $params["num_feeds"] = (int) $num_feeds;
1943
1944                 $params["collapsed_feedlist"] = (int) get_pref("_COLLAPSED_FEEDLIST");
1945                 $params["hotkeys"] = get_hotkeys_map();
1946
1947                 $params["csrf_token"] = $_SESSION["csrf_token"];
1948                 $params["widescreen"] = (int) $_COOKIE["ttrss_widescreen"];
1949
1950                 $params['simple_update'] = defined('SIMPLE_UPDATE_MODE') && SIMPLE_UPDATE_MODE;
1951
1952                 return $params;
1953         }
1954
1955         function get_hotkeys_info() {
1956                 $hotkeys = array(
1957                         __("Navigation") => array(
1958                                 "next_feed" => __("Open next feed"),
1959                                 "prev_feed" => __("Open previous feed"),
1960                                 "next_article" => __("Open next article"),
1961                                 "prev_article" => __("Open previous article"),
1962                                 "next_article_noscroll" => __("Open next article (don't scroll long articles)"),
1963                                 "prev_article_noscroll" => __("Open previous article (don't scroll long articles)"),
1964                                 "next_article_noexpand" => __("Move to next article (don't expand or mark read)"),
1965                                 "prev_article_noexpand" => __("Move to previous article (don't expand or mark read)"),
1966                                 "search_dialog" => __("Show search dialog")),
1967                         __("Article") => array(
1968                                 "toggle_mark" => __("Toggle starred"),
1969                                 "toggle_publ" => __("Toggle published"),
1970                                 "toggle_unread" => __("Toggle unread"),
1971                                 "edit_tags" => __("Edit tags"),
1972                                 "dismiss_selected" => __("Dismiss selected"),
1973                                 "dismiss_read" => __("Dismiss read"),
1974                                 "open_in_new_window" => __("Open in new window"),
1975                                 "catchup_below" => __("Mark below as read"),
1976                                 "catchup_above" => __("Mark above as read"),
1977                                 "article_scroll_down" => __("Scroll down"),
1978                                 "article_scroll_up" => __("Scroll up"),
1979                                 "select_article_cursor" => __("Select article under cursor"),
1980                                 "email_article" => __("Email article"),
1981                                 "close_article" => __("Close/collapse article"),
1982                                 "toggle_expand" => __("Toggle article expansion (combined mode)"),
1983                                 "toggle_widescreen" => __("Toggle widescreen mode"),
1984                                 "toggle_embed_original" => __("Toggle embed original")),
1985                         __("Article selection") => array(
1986                                 "select_all" => __("Select all articles"),
1987                                 "select_unread" => __("Select unread"),
1988                                 "select_marked" => __("Select starred"),
1989                                 "select_published" => __("Select published"),
1990                                 "select_invert" => __("Invert selection"),
1991                                 "select_none" => __("Deselect everything")),
1992                         __("Feed") => array(
1993                                 "feed_refresh" => __("Refresh current feed"),
1994                                 "feed_unhide_read" => __("Un/hide read feeds"),
1995                                 "feed_subscribe" => __("Subscribe to feed"),
1996                                 "feed_edit" => __("Edit feed"),
1997                                 "feed_catchup" => __("Mark as read"),
1998                                 "feed_reverse" => __("Reverse headlines"),
1999                                 "feed_debug_update" => __("Debug feed update"),
2000                                 "catchup_all" => __("Mark all feeds as read"),
2001                                 "cat_toggle_collapse" => __("Un/collapse current category"),
2002                                 "toggle_combined_mode" => __("Toggle combined mode"),
2003                                 "toggle_cdm_expanded" => __("Toggle auto expand in combined mode")),
2004                         __("Go to") => array(
2005                                 "goto_all" => __("All articles"),
2006                                 "goto_fresh" => __("Fresh"),
2007                                 "goto_marked" => __("Starred"),
2008                                 "goto_published" => __("Published"),
2009                                 "goto_tagcloud" => __("Tag cloud"),
2010                                 "goto_prefs" => __("Preferences")),
2011                         __("Other") => array(
2012                                 "create_label" => __("Create label"),
2013                                 "create_filter" => __("Create filter"),
2014                                 "collapse_sidebar" => __("Un/collapse sidebar"),
2015                                 "help_dialog" => __("Show help dialog"))
2016                         );
2017
2018                 foreach (PluginHost::getInstance()->get_hooks(PluginHost::HOOK_HOTKEY_INFO) as $plugin) {
2019                         $hotkeys = $plugin->hook_hotkey_info($hotkeys);
2020                 }
2021
2022                 return $hotkeys;
2023         }
2024
2025         function get_hotkeys_map() {
2026                 $hotkeys = array(
2027 //                      "navigation" => array(
2028                                 "k" => "next_feed",
2029                                 "j" => "prev_feed",
2030                                 "n" => "next_article",
2031                                 "p" => "prev_article",
2032                                 "(38)|up" => "prev_article",
2033                                 "(40)|down" => "next_article",
2034 //                              "^(38)|Ctrl-up" => "prev_article_noscroll",
2035 //                              "^(40)|Ctrl-down" => "next_article_noscroll",
2036                                 "(191)|/" => "search_dialog",
2037 //                      "article" => array(
2038                                 "s" => "toggle_mark",
2039                                 "*s" => "toggle_publ",
2040                                 "u" => "toggle_unread",
2041                                 "*t" => "edit_tags",
2042                                 "*d" => "dismiss_selected",
2043                                 "*x" => "dismiss_read",
2044                                 "o" => "open_in_new_window",
2045                                 "c p" => "catchup_below",
2046                                 "c n" => "catchup_above",
2047                                 "*n" => "article_scroll_down",
2048                                 "*p" => "article_scroll_up",
2049                                 "*(38)|Shift+up" => "article_scroll_up",
2050                                 "*(40)|Shift+down" => "article_scroll_down",
2051                                 "a *w" => "toggle_widescreen",
2052                                 "a e" => "toggle_embed_original",
2053                                 "e" => "email_article",
2054                                 "a q" => "close_article",
2055 //                      "article_selection" => array(
2056                                 "a a" => "select_all",
2057                                 "a u" => "select_unread",
2058                                 "a *u" => "select_marked",
2059                                 "a p" => "select_published",
2060                                 "a i" => "select_invert",
2061                                 "a n" => "select_none",
2062 //                      "feed" => array(
2063                                 "f r" => "feed_refresh",
2064                                 "f a" => "feed_unhide_read",
2065                                 "f s" => "feed_subscribe",
2066                                 "f e" => "feed_edit",
2067                                 "f q" => "feed_catchup",
2068                                 "f x" => "feed_reverse",
2069                                 "f *d" => "feed_debug_update",
2070                                 "f *c" => "toggle_combined_mode",
2071                                 "f c" => "toggle_cdm_expanded",
2072                                 "*q" => "catchup_all",
2073                                 "x" => "cat_toggle_collapse",
2074 //                      "goto" => array(
2075                                 "g a" => "goto_all",
2076                                 "g f" => "goto_fresh",
2077                                 "g s" => "goto_marked",
2078                                 "g p" => "goto_published",
2079                                 "g t" => "goto_tagcloud",
2080                                 "g *p" => "goto_prefs",
2081 //                      "other" => array(
2082                                 "(9)|Tab" => "select_article_cursor", // tab
2083                                 "c l" => "create_label",
2084                                 "c f" => "create_filter",
2085                                 "c s" => "collapse_sidebar",
2086                                 "^(191)|Ctrl+/" => "help_dialog",
2087                         );
2088
2089                 if (get_pref('COMBINED_DISPLAY_MODE')) {
2090                         $hotkeys["^(38)|Ctrl-up"] = "prev_article_noscroll";
2091                         $hotkeys["^(40)|Ctrl-down"] = "next_article_noscroll";
2092                 }
2093
2094                 foreach (PluginHost::getInstance()->get_hooks(PluginHost::HOOK_HOTKEY_MAP) as $plugin) {
2095                         $hotkeys = $plugin->hook_hotkey_map($hotkeys);
2096                 }
2097
2098                 $prefixes = array();
2099
2100                 foreach (array_keys($hotkeys) as $hotkey) {
2101                         $pair = explode(" ", $hotkey, 2);
2102
2103                         if (count($pair) > 1 && !in_array($pair[0], $prefixes)) {
2104                                 array_push($prefixes, $pair[0]);
2105                         }
2106                 }
2107
2108                 return array($prefixes, $hotkeys);
2109         }
2110
2111         function make_runtime_info() {
2112                 $data = array();
2113
2114                 $result = db_query("SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2115                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2116
2117                 $max_feed_id = db_fetch_result($result, 0, "mid");
2118                 $num_feeds = db_fetch_result($result, 0, "nf");
2119
2120                 $data["max_feed_id"] = (int) $max_feed_id;
2121                 $data["num_feeds"] = (int) $num_feeds;
2122
2123                 $data['last_article_id'] = getLastArticleId();
2124                 $data['cdm_expanded'] = get_pref('CDM_EXPANDED');
2125
2126                 $data['dep_ts'] = calculate_dep_timestamp();
2127                 $data['reload_on_ts_change'] = !defined('_NO_RELOAD_ON_TS_CHANGE');
2128
2129                 if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
2130
2131                         $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
2132
2133                         if (time() - $_SESSION["daemon_stamp_check"] > 30) {
2134
2135                                 $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
2136
2137                                 if ($stamp) {
2138                                         $stamp_delta = time() - $stamp;
2139
2140                                         if ($stamp_delta > 1800) {
2141                                                 $stamp_check = 0;
2142                                         } else {
2143                                                 $stamp_check = 1;
2144                                                 $_SESSION["daemon_stamp_check"] = time();
2145                                         }
2146
2147                                         $data['daemon_stamp_ok'] = $stamp_check;
2148
2149                                         $stamp_fmt = date("Y.m.d, G:i", $stamp);
2150
2151                                         $data['daemon_stamp'] = $stamp_fmt;
2152                                 }
2153                         }
2154                 }
2155
2156                 if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
2157                                 $new_version_details = @check_for_update();
2158
2159                                 $data['new_version_available'] = (int) ($new_version_details != false);
2160
2161                                 $_SESSION["last_version_check"] = time();
2162                                 $_SESSION["version_data"] = $new_version_details;
2163                 }
2164
2165                 return $data;
2166         }
2167
2168         function search_to_sql($search) {
2169
2170                 $search_query_part = "";
2171
2172                 $keywords = explode(" ", $search);
2173                 $query_keywords = array();
2174
2175                 foreach ($keywords as $k) {
2176                         if (strpos($k, "-") === 0) {
2177                                 $k = substr($k, 1);
2178                                 $not = "NOT";
2179                         } else {
2180                                 $not = "";
2181                         }
2182
2183                         $commandpair = explode(":", mb_strtolower($k), 2);
2184
2185                         switch ($commandpair[0]) {
2186                         case "title":
2187                                 if ($commandpair[1]) {
2188                                         array_push($query_keywords, "($not (LOWER(ttrss_entries.title) LIKE '%".
2189                                                 db_escape_string(mb_strtolower($commandpair[1]))."%'))");
2190                                 } else {
2191                                         array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2192                                                         OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2193                                 }
2194                                 break;
2195                         case "author":
2196                                 if ($commandpair[1]) {
2197                                         array_push($query_keywords, "($not (LOWER(author) LIKE '%".
2198                                                 db_escape_string(mb_strtolower($commandpair[1]))."%'))");
2199                                 } else {
2200                                         array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2201                                                         OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2202                                 }
2203                                 break;
2204                         case "note":
2205                                 if ($commandpair[1]) {
2206                                         if ($commandpair[1] == "true")
2207                                                 array_push($query_keywords, "($not (note IS NOT NULL AND note != ''))");
2208                                         else if ($commandpair[1] == "false")
2209                                                 array_push($query_keywords, "($not (note IS NULL OR note = ''))");
2210                                         else
2211                                                 array_push($query_keywords, "($not (LOWER(note) LIKE '%".
2212                                                         db_escape_string(mb_strtolower($commandpair[1]))."%'))");
2213                                 } else {
2214                                         array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2215                                                         OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2216                                 }
2217                                 break;
2218                         case "star":
2219
2220                                 if ($commandpair[1]) {
2221                                         if ($commandpair[1] == "true")
2222                                                 array_push($query_keywords, "($not (marked = true))");
2223                                         else
2224                                                 array_push($query_keywords, "($not (marked = false))");
2225                                 } else {
2226                                         array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2227                                                         OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2228                                 }
2229                                 break;
2230                         case "pub":
2231                                 if ($commandpair[1]) {
2232                                         if ($commandpair[1] == "true")
2233                                                 array_push($query_keywords, "($not (published = true))");
2234                                         else
2235                                                 array_push($query_keywords, "($not (published = false))");
2236
2237                                 } else {
2238                                         array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2239                                                         OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2240                                 }
2241                                 break;
2242                         default:
2243                                 if (strpos($k, "@") === 0) {
2244
2245                                         $user_tz_string = get_pref('USER_TIMEZONE', $_SESSION['uid']);
2246                                         $orig_ts = strtotime(substr($k, 1));
2247                                         $k = date("Y-m-d", convert_timestamp($orig_ts, $user_tz_string, 'UTC'));
2248
2249                                         //$k = date("Y-m-d", strtotime(substr($k, 1)));
2250
2251                                         array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
2252                                 } else {
2253                                         array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2254                                                         OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2255                                 }
2256                         }
2257                 }
2258
2259                 $search_query_part = implode("AND", $query_keywords);
2260
2261                 return $search_query_part;
2262         }
2263
2264         function getParentCategories($cat, $owner_uid) {
2265                 $rv = array();
2266
2267                 $result = db_query("SELECT parent_cat FROM ttrss_feed_categories
2268                         WHERE id = '$cat' AND parent_cat IS NOT NULL AND owner_uid = $owner_uid");
2269
2270                 while ($line = db_fetch_assoc($result)) {
2271                         array_push($rv, $line["parent_cat"]);
2272                         $rv = array_merge($rv, getParentCategories($line["parent_cat"], $owner_uid));
2273                 }
2274
2275                 return $rv;
2276         }
2277
2278         function getChildCategories($cat, $owner_uid) {
2279                 $rv = array();
2280
2281                 $result = db_query("SELECT id FROM ttrss_feed_categories
2282                         WHERE parent_cat = '$cat' AND owner_uid = $owner_uid");
2283
2284                 while ($line = db_fetch_assoc($result)) {
2285                         array_push($rv, $line["id"]);
2286                         $rv = array_merge($rv, getChildCategories($line["id"], $owner_uid));
2287                 }
2288
2289                 return $rv;
2290         }
2291
2292         function queryFeedHeadlines($feed, $limit, $view_mode, $cat_view, $search, $search_mode, $override_order = false, $offset = 0, $owner_uid = 0, $filter = false, $since_id = 0, $include_children = false, $ignore_vfeed_group = false) {
2293
2294                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2295
2296                 $ext_tables_part = "";
2297
2298                         if ($search) {
2299
2300                                 if (SPHINX_ENABLED) {
2301                                         $ids = join(",", @sphinx_search($search, 0, 500));
2302
2303                                         if ($ids)
2304                                                 $search_query_part = "ref_id IN ($ids) AND ";
2305                                         else
2306                                                 $search_query_part = "ref_id = -1 AND ";
2307
2308                                 } else {
2309                                         $search_query_part = search_to_sql($search);
2310                                         $search_query_part .= " AND ";
2311                                 }
2312
2313                         } else {
2314                                 $search_query_part = "";
2315                         }
2316
2317                         if ($filter) {
2318
2319                                 if (DB_TYPE == "pgsql") {
2320                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '14 days' ";
2321                                 } else {
2322                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL 14 DAY) ";
2323                                 }
2324
2325                                 $override_order = "updated DESC";
2326
2327                                 $filter_query_part = filter_to_sql($filter, $owner_uid);
2328
2329                                 // Try to check if SQL regexp implementation chokes on a valid regexp
2330                                 $result = db_query("SELECT true AS true_val FROM ttrss_entries,
2331                                         ttrss_user_entries, ttrss_feeds, ttrss_feed_categories
2332                                         WHERE $filter_query_part LIMIT 1", false);
2333
2334                                 if ($result) {
2335                                         $test = db_fetch_result($result, 0, "true_val");
2336
2337                                         if (!$test) {
2338                                                 $filter_query_part = "false AND";
2339                                         } else {
2340                                                 $filter_query_part .= " AND";
2341                                         }
2342                                 } else {
2343                                         $filter_query_part = "false AND";
2344                                 }
2345
2346                         } else {
2347                                 $filter_query_part = "";
2348                         }
2349
2350                         if ($since_id) {
2351                                 $since_id_part = "ttrss_entries.id > $since_id AND ";
2352                         } else {
2353                                 $since_id_part = "";
2354                         }
2355
2356                         $view_query_part = "";
2357
2358                         if ($view_mode == "adaptive") {
2359                                 if ($search) {
2360                                         $view_query_part = " ";
2361                                 } else if ($feed != -1) {
2362
2363                                         $unread = getFeedUnread($feed, $cat_view);
2364
2365                                         if ($cat_view && $feed > 0 && $include_children)
2366                                                 $unread += getCategoryChildrenUnread($feed);
2367
2368                                         if ($unread > 0)
2369                                 $view_query_part = " unread = true AND ";
2370
2371                                 }
2372                         }
2373
2374                         if ($view_mode == "marked") {
2375                                 $view_query_part = " marked = true AND ";
2376                         }
2377
2378                         if ($view_mode == "has_note") {
2379                                 $view_query_part = " (note IS NOT NULL AND note != '') AND ";
2380                         }
2381
2382                         if ($view_mode == "published") {
2383                                 $view_query_part = " published = true AND ";
2384                         }
2385
2386                         if ($view_mode == "unread" && $feed != -6) {
2387                                 $view_query_part = " unread = true AND ";
2388                         }
2389
2390                         if ($limit > 0) {
2391                                 $limit_query_part = "LIMIT " . $limit;
2392                         }
2393
2394                         $allow_archived = false;
2395
2396                         $vfeed_query_part = "";
2397
2398                         // override query strategy and enable feed display when searching globally
2399                         if ($search && $search_mode == "all_feeds") {
2400                                 $query_strategy_part = "true";
2401                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2402                         /* tags */
2403                         } else if (!is_numeric($feed)) {
2404                                 $query_strategy_part = "true";
2405                                 $vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
2406                                         id = feed_id) as feed_title,";
2407                         } else if ($search && $search_mode == "this_cat") {
2408                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2409
2410                                 if ($feed > 0) {
2411                                         if ($include_children) {
2412                                                 $subcats = getChildCategories($feed, $owner_uid);
2413                                                 array_push($subcats, $feed);
2414                                                 $cats_qpart = join(",", $subcats);
2415                                         } else {
2416                                                 $cats_qpart = $feed;
2417                                         }
2418
2419                                         $query_strategy_part = "ttrss_feeds.cat_id IN ($cats_qpart)";
2420
2421                                 } else {
2422                                         $query_strategy_part = "ttrss_feeds.cat_id IS NULL";
2423                                 }
2424
2425                         } else if ($feed > 0) {
2426
2427                                 if ($cat_view) {
2428
2429                                         if ($feed > 0) {
2430                                                 if ($include_children) {
2431                                                         # sub-cats
2432                                                         $subcats = getChildCategories($feed, $owner_uid);
2433
2434                                                         array_push($subcats, $feed);
2435                                                         $query_strategy_part = "cat_id IN (".
2436                                                                         implode(",", $subcats).")";
2437
2438                                                 } else {
2439                                                         $query_strategy_part = "cat_id = '$feed'";
2440                                                 }
2441
2442                                         } else {
2443                                                 $query_strategy_part = "cat_id IS NULL";
2444                                         }
2445
2446                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2447
2448                                 } else {
2449                                         $query_strategy_part = "feed_id = '$feed'";
2450                                 }
2451                         } else if ($feed == 0 && !$cat_view) { // archive virtual feed
2452                                 $query_strategy_part = "feed_id IS NULL";
2453                                 $allow_archived = true;
2454                         } else if ($feed == 0 && $cat_view) { // uncategorized
2455                                 $query_strategy_part = "cat_id IS NULL AND feed_id IS NOT NULL";
2456                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2457                         } else if ($feed == -1) { // starred virtual feed
2458                                 $query_strategy_part = "marked = true";
2459                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2460                                 $allow_archived = true;
2461
2462                                 if (!$override_order) {
2463                                         $override_order = "last_marked DESC, date_entered DESC, updated DESC";
2464                                 }
2465
2466                         } else if ($feed == -2) { // published virtual feed OR labels category
2467
2468                                 if (!$cat_view) {
2469                                         $query_strategy_part = "published = true";
2470                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2471                                         $allow_archived = true;
2472
2473                                         if (!$override_order) {
2474                                                 $override_order = "last_published DESC, date_entered DESC, updated DESC";
2475                                         }
2476
2477                                 } else {
2478                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2479
2480                                         $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2481
2482                                         $query_strategy_part = "ttrss_labels2.id = ttrss_user_labels2.label_id AND
2483                                                 ttrss_user_labels2.article_id = ref_id";
2484
2485                                 }
2486                         } else if ($feed == -6) { // recently read
2487                                 $query_strategy_part = "unread = false AND last_read IS NOT NULL";
2488                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2489                                 $allow_archived = true;
2490
2491                                 if (!$override_order) $override_order = "last_read DESC";
2492                         } else if ($feed == -3) { // fresh virtual feed
2493                                 $query_strategy_part = "unread = true AND score >= 0";
2494
2495                                 $intl = get_pref("FRESH_ARTICLE_MAX_AGE", $owner_uid);
2496
2497                                 if (DB_TYPE == "pgsql") {
2498                                         $query_strategy_part .= " AND date_entered > NOW() - INTERVAL '$intl hour' ";
2499                                 } else {
2500                                         $query_strategy_part .= " AND date_entered > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
2501                                 }
2502
2503                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2504                         } else if ($feed == -4) { // all articles virtual feed
2505                                 $allow_archived = true;
2506                                 $query_strategy_part = "true";
2507                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2508                         } else if ($feed <= LABEL_BASE_INDEX) { // labels
2509                                 $label_id = feed_to_label_id($feed);
2510
2511                                 $query_strategy_part = "label_id = '$label_id' AND
2512                                         ttrss_labels2.id = ttrss_user_labels2.label_id AND
2513                                         ttrss_user_labels2.article_id = ref_id";
2514
2515                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2516                                 $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2517                                 $allow_archived = true;
2518
2519                         } else {
2520                                 $query_strategy_part = "true";
2521                         }
2522
2523                         $order_by = "score DESC, date_entered DESC, updated DESC";
2524
2525                         if ($view_mode == "unread_first") {
2526                                 $order_by = "unread DESC, $order_by";
2527                         }
2528
2529                         if ($override_order) {
2530                                 $order_by = $override_order;
2531                         }
2532
2533                         $feed_title = "";
2534
2535                         if ($search) {
2536                                 $feed_title = T_sprintf("Search results: %s", $search);
2537                         } else {
2538                                 if ($cat_view) {
2539                                         $feed_title = getCategoryTitle($feed);
2540                                 } else {
2541                                         if (is_numeric($feed) && $feed > 0) {
2542                                                 $result = db_query("SELECT title,site_url,last_error,last_updated
2543                                                         FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = $owner_uid");
2544
2545                                                 $feed_title = db_fetch_result($result, 0, "title");
2546                                                 $feed_site_url = db_fetch_result($result, 0, "site_url");
2547                                                 $last_error = db_fetch_result($result, 0, "last_error");
2548                                                 $last_updated = db_fetch_result($result, 0, "last_updated");
2549                                         } else {
2550                                                 $feed_title = getFeedTitle($feed);
2551                                         }
2552                                 }
2553                         }
2554
2555                         $content_query_part = "content as content_preview, cached_content, ";
2556
2557                         if (is_numeric($feed)) {
2558
2559                                 if ($feed >= 0) {
2560                                         $feed_kind = "Feeds";
2561                                 } else {
2562                                         $feed_kind = "Labels";
2563                                 }
2564
2565                                 if ($limit_query_part) {
2566                                         $offset_query_part = "OFFSET $offset";
2567                                 }
2568
2569                                 // proper override_order applied above
2570                                 if ($vfeed_query_part && !$ignore_vfeed_group && get_pref('VFEED_GROUP_BY_FEED', $owner_uid)) {
2571                                         if (!$override_order) {
2572                                                 $order_by = "ttrss_feeds.title, $order_by";
2573                                         } else {
2574                                                 $order_by = "ttrss_feeds.title, $override_order";
2575                                         }
2576                                 }
2577
2578                                 if (!$allow_archived) {
2579                                         $from_qpart = "ttrss_entries,ttrss_user_entries,ttrss_feeds$ext_tables_part";
2580                                         $feed_check_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
2581
2582                                 } else {
2583                                         $from_qpart = "ttrss_entries$ext_tables_part,ttrss_user_entries
2584                                                 LEFT JOIN ttrss_feeds ON (feed_id = ttrss_feeds.id)";
2585                                 }
2586
2587                                 if ($vfeed_query_part)
2588                                         $vfeed_query_part .= "favicon_avg_color,";
2589
2590                                 $query = "SELECT DISTINCT
2591                                                 date_entered,
2592                                                 guid,
2593                                                 ttrss_entries.id,ttrss_entries.title,
2594                                                 updated,
2595                                                 label_cache,
2596                                                 tag_cache,
2597                                                 always_display_enclosures,
2598                                                 site_url,
2599                                                 note,
2600                                                 num_comments,
2601                                                 comments,
2602                                                 int_id,
2603                                                 hide_images,
2604                                                 unread,feed_id,marked,published,link,last_read,orig_feed_id,
2605                                                 last_marked, last_published,
2606                                                 $vfeed_query_part
2607                                                 $content_query_part
2608                                                 author,score
2609                                         FROM
2610                                                 $from_qpart
2611                                         WHERE
2612                                         $feed_check_qpart
2613                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
2614                                         ttrss_user_entries.owner_uid = '$owner_uid' AND
2615                                         $search_query_part
2616                                         $filter_query_part
2617                                         $view_query_part
2618                                         $since_id_part
2619                                         $query_strategy_part ORDER BY $order_by
2620                                         $limit_query_part $offset_query_part";
2621
2622                                 if ($_REQUEST["debug"]) print $query;
2623
2624                                 $result = db_query($query);
2625
2626                         } else {
2627                                 // browsing by tag
2628
2629                                 $select_qpart = "SELECT DISTINCT " .
2630                                                                 "date_entered," .
2631                                                                 "guid," .
2632                                                                 "note," .
2633                                                                 "ttrss_entries.id as id," .
2634                                                                 "title," .
2635                                                                 "updated," .
2636                                                                 "unread," .
2637                                                                 "feed_id," .
2638                                                                 "orig_feed_id," .
2639                                                                 "marked," .
2640                                                                 "num_comments, " .
2641                                                                 "comments, " .
2642                                                                 "tag_cache," .
2643                                                                 "label_cache," .
2644                                                                 "link," .
2645                                                                 "last_read," .
2646                                                                 "(SELECT hide_images FROM ttrss_feeds WHERE id = feed_id) AS hide_images," .
2647                                                                 "last_marked, last_published, " .
2648                                                                 $since_id_part .
2649                                                                 $vfeed_query_part .
2650                                                                 $content_query_part .
2651                                                                 "score ";
2652
2653                                 $feed_kind = "Tags";
2654                                 $all_tags = explode(",", $feed);
2655                                 if ($search_mode == 'any') {
2656                                         $tag_sql = "tag_name in (" . implode(", ", array_map("db_quote", $all_tags)) . ")";
2657                                         $from_qpart = " FROM ttrss_entries,ttrss_user_entries,ttrss_tags ";
2658                                         $where_qpart = " WHERE " .
2659                                                                    "ref_id = ttrss_entries.id AND " .
2660                                                                    "ttrss_user_entries.owner_uid = $owner_uid AND " .
2661                                                                    "post_int_id = int_id AND $tag_sql AND " .
2662                                                                    $view_query_part .
2663                                                                    $search_query_part .
2664                                                                    $query_strategy_part . " ORDER BY $order_by " .
2665                                                                    $limit_query_part;
2666
2667                                 } else {
2668                                         $i = 1;
2669                                         $sub_selects = array();
2670                                         $sub_ands = array();
2671                                         foreach ($all_tags as $term) {
2672                                                 array_push($sub_selects, "(SELECT post_int_id from ttrss_tags WHERE tag_name = " . db_quote($term) . " AND owner_uid = $owner_uid) as A$i");
2673                                                 $i++;
2674                                         }
2675                                         if ($i > 2) {
2676                                                 $x = 1;
2677                                                 $y = 2;
2678                                                 do {
2679                                                         array_push($sub_ands, "A$x.post_int_id = A$y.post_int_id");
2680                                                         $x++;
2681                                                         $y++;
2682                                                 } while ($y < $i);
2683                                         }
2684                                         array_push($sub_ands, "A1.post_int_id = ttrss_user_entries.int_id and ttrss_user_entries.owner_uid = $owner_uid");
2685                                         array_push($sub_ands, "ttrss_user_entries.ref_id = ttrss_entries.id");
2686                                         $from_qpart = " FROM " . implode(", ", $sub_selects) . ", ttrss_user_entries, ttrss_entries";
2687                                         $where_qpart = " WHERE " . implode(" AND ", $sub_ands);
2688                                 }
2689                                 //                              error_log("TAG SQL: " . $tag_sql);
2690                                 // $tag_sql = "tag_name = '$feed'";   DEFAULT way
2691
2692                                 //                              error_log("[". $select_qpart . "][" . $from_qpart . "][" .$where_qpart . "]");
2693                                 $result = db_query($select_qpart . $from_qpart . $where_qpart);
2694                         }
2695
2696                         return array($result, $feed_title, $feed_site_url, $last_error, $last_updated);
2697
2698         }
2699
2700         function sanitize($str, $force_remove_images = false, $owner = false, $site_url = false) {
2701                 if (!$owner) $owner = $_SESSION["uid"];
2702
2703                 $res = trim($str); if (!$res) return '';
2704
2705                 if (strpos($res, "href=") === false)
2706                         $res = rewrite_urls($res);
2707
2708                 $charset_hack = '<head>
2709                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
2710                 </head>';
2711
2712                 $res = trim($res); if (!$res) return '';
2713
2714                 libxml_use_internal_errors(true);
2715
2716                 $doc = new DOMDocument();
2717                 $doc->loadHTML($charset_hack . $res);
2718                 $xpath = new DOMXPath($doc);
2719
2720                 $entries = $xpath->query('(//a[@href]|//img[@src])');
2721
2722                 foreach ($entries as $entry) {
2723
2724                         if ($site_url) {
2725
2726                                 if ($entry->hasAttribute('href'))
2727                                         $entry->setAttribute('href',
2728                                                 rewrite_relative_url($site_url, $entry->getAttribute('href')));
2729
2730                                 if ($entry->hasAttribute('src')) {
2731                                         $src = rewrite_relative_url($site_url, $entry->getAttribute('src'));
2732
2733                                         $cached_filename = CACHE_DIR . '/images/' . sha1($src) . '.png';
2734
2735                                         if (file_exists($cached_filename)) {
2736                                                 $src = SELF_URL_PATH . '/image.php?hash=' . sha1($src);
2737                                         }
2738
2739                                         $entry->setAttribute('src', $src);
2740                                 }
2741
2742                                 if ($entry->nodeName == 'img') {
2743                                         if (($owner && get_pref("STRIP_IMAGES", $owner)) ||
2744                                                         $force_remove_images || $_SESSION["bw_limit"]) {
2745
2746                                                 $p = $doc->createElement('p');
2747
2748                                                 $a = $doc->createElement('a');
2749                                                 $a->setAttribute('href', $entry->getAttribute('src'));
2750
2751                                                 $a->appendChild(new DOMText($entry->getAttribute('src')));
2752                                                 $a->setAttribute('target', '_blank');
2753
2754                                                 $p->appendChild($a);
2755
2756                                                 $entry->parentNode->replaceChild($p, $entry);
2757                                         }
2758                                 }
2759                         }
2760
2761                         if (strtolower($entry->nodeName) == "a") {
2762                                 $entry->setAttribute("target", "_blank");
2763                         }
2764                 }
2765
2766                 $entries = $xpath->query('//iframe');
2767                 foreach ($entries as $entry) {
2768                         $entry->setAttribute('sandbox', 'allow-scripts');
2769
2770                 }
2771
2772                 $allowed_elements = array('a', 'address', 'audio', 'article', 'aside',
2773                         'b', 'bdi', 'bdo', 'big', 'blockquote', 'body', 'br',
2774                         'caption', 'cite', 'center', 'code', 'col', 'colgroup',
2775                         'data', 'dd', 'del', 'details', 'div', 'dl', 'font',
2776                         'dt', 'em', 'footer', 'figure', 'figcaption',
2777                         'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'header', 'html', 'i',
2778                         'img', 'ins', 'kbd', 'li', 'main', 'mark', 'nav', 'noscript',
2779                         'ol', 'p', 'pre', 'q', 'ruby', 'rp', 'rt', 's', 'samp', 'section',
2780                         'small', 'source', 'span', 'strike', 'strong', 'sub', 'summary',
2781                         'sup', 'table', 'tbody', 'td', 'tfoot', 'th', 'thead', 'time',
2782                         'tr', 'track', 'tt', 'u', 'ul', 'var', 'wbr', 'video' );
2783
2784                 if ($_SESSION['hasSandbox']) $allowed_elements[] = 'iframe';
2785
2786                 $disallowed_attributes = array('id', 'style', 'class');
2787
2788                 foreach (PluginHost::getInstance()->get_hooks(PluginHost::HOOK_SANITIZE) as $plugin) {
2789                         $retval = $plugin->hook_sanitize($doc, $site_url, $allowed_elements, $disallowed_attributes);
2790                         if (is_array($retval)) {
2791                                 $doc = $retval[0];
2792                                 $allowed_elements = $retval[1];
2793                                 $disallowed_attributes = $retval[2];
2794                         } else {
2795                                 $doc = $retval;
2796                         }
2797                 }
2798
2799                 $doc->removeChild($doc->firstChild); //remove doctype
2800                 $doc = strip_harmful_tags($doc, $allowed_elements, $disallowed_attributes);
2801                 $res = $doc->saveHTML();
2802                 return $res;
2803         }
2804
2805         function strip_harmful_tags($doc, $allowed_elements, $disallowed_attributes) {
2806                 $xpath = new DOMXPath($doc);
2807                 $entries = $xpath->query('//*');
2808
2809                 foreach ($entries as $entry) {
2810                         if (!in_array($entry->nodeName, $allowed_elements)) {
2811                                 $entry->parentNode->removeChild($entry);
2812                         }
2813
2814                         if ($entry->hasAttributes()) {
2815                                 $attrs_to_remove = array();
2816
2817                                 foreach ($entry->attributes as $attr) {
2818
2819                                         if (strpos($attr->nodeName, 'on') === 0) {
2820                                                 array_push($attrs_to_remove, $attr);
2821                                         }
2822
2823                                         if (in_array($attr->nodeName, $disallowed_attributes)) {
2824                                                 array_push($attrs_to_remove, $attr);
2825                                         }
2826                                 }
2827
2828                                 foreach ($attrs_to_remove as $attr) {
2829                                         $entry->removeAttributeNode($attr);
2830                                 }
2831                         }
2832                 }
2833
2834                 return $doc;
2835         }
2836
2837         function check_for_update() {
2838                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2839                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION .
2840                                 "&iid=" . sha1(SELF_URL_PATH);
2841
2842                         $version_data = @fetch_file_contents($version_url);
2843
2844                         if ($version_data) {
2845                                 $version_data = json_decode($version_data, true);
2846                                 if ($version_data && $version_data['version']) {
2847
2848                                         if (version_compare(VERSION, $version_data['version']) == -1) {
2849                                                 return $version_data;
2850                                         }
2851                                 }
2852                         }
2853                 }
2854                 return false;
2855         }
2856
2857         function catchupArticlesById($ids, $cmode, $owner_uid = false) {
2858
2859                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2860                 if (count($ids) == 0) return;
2861
2862                 $tmp_ids = array();
2863
2864                 foreach ($ids as $id) {
2865                         array_push($tmp_ids, "ref_id = '$id'");
2866                 }
2867
2868                 $ids_qpart = join(" OR ", $tmp_ids);
2869
2870                 if ($cmode == 0) {
2871                         db_query("UPDATE ttrss_user_entries SET
2872                         unread = false,last_read = NOW()
2873                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2874                 } else if ($cmode == 1) {
2875                         db_query("UPDATE ttrss_user_entries SET
2876                         unread = true
2877                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2878                 } else {
2879                         db_query("UPDATE ttrss_user_entries SET
2880                         unread = NOT unread,last_read = NOW()
2881                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2882                 }
2883
2884                 /* update ccache */
2885
2886                 $result = db_query("SELECT DISTINCT feed_id FROM ttrss_user_entries
2887                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
2888
2889                 while ($line = db_fetch_assoc($result)) {
2890                         ccache_update($line["feed_id"], $owner_uid);
2891                 }
2892         }
2893
2894         function get_article_tags($id, $owner_uid = 0, $tag_cache = false) {
2895
2896                 $a_id = db_escape_string($id);
2897
2898                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2899
2900                 $query = "SELECT DISTINCT tag_name,
2901                         owner_uid as owner FROM
2902                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
2903                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
2904
2905                 $tags = array();
2906
2907                 /* check cache first */
2908
2909                 if ($tag_cache === false) {
2910                         $result = db_query("SELECT tag_cache FROM ttrss_user_entries
2911                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
2912
2913                         $tag_cache = db_fetch_result($result, 0, "tag_cache");
2914                 }
2915
2916                 if ($tag_cache) {
2917                         $tags = explode(",", $tag_cache);
2918                 } else {
2919
2920                         /* do it the hard way */
2921
2922                         $tmp_result = db_query($query);
2923
2924                         while ($tmp_line = db_fetch_assoc($tmp_result)) {
2925                                 array_push($tags, $tmp_line["tag_name"]);
2926                         }
2927
2928                         /* update the cache */
2929
2930                         $tags_str = db_escape_string(join(",", $tags));
2931
2932                         db_query("UPDATE ttrss_user_entries
2933                                 SET tag_cache = '$tags_str' WHERE ref_id = '$id'
2934                                 AND owner_uid = $owner_uid");
2935                 }
2936
2937                 return $tags;
2938         }
2939
2940         function trim_array($array) {
2941                 $tmp = $array;
2942                 array_walk($tmp, 'trim');
2943                 return $tmp;
2944         }
2945
2946         function tag_is_valid($tag) {
2947                 if ($tag == '') return false;
2948                 if (preg_match("/^[0-9]*$/", $tag)) return false;
2949                 if (mb_strlen($tag) > 250) return false;
2950
2951                 if (function_exists('iconv')) {
2952                         $tag = iconv("utf-8", "utf-8", $tag);
2953                 }
2954
2955                 if (!$tag) return false;
2956
2957                 return true;
2958         }
2959
2960         function render_login_form() {
2961                 header('Cache-Control: public');
2962
2963                 require_once "login_form.php";
2964                 exit;
2965         }
2966
2967         function format_warning($msg, $id = "") {
2968                 global $link;
2969                 return "<div class=\"warning\" id=\"$id\">
2970                         <span><img src=\"images/sign_excl.svg\"></span><span>$msg</span></div>";
2971         }
2972
2973         function format_notice($msg, $id = "") {
2974                 global $link;
2975                 return "<div class=\"notice\" id=\"$id\">
2976                         <span><img src=\"images/sign_info.svg\"></span><span>$msg</span></div>";
2977         }
2978
2979         function format_error($msg, $id = "") {
2980                 global $link;
2981                 return "<div class=\"error\" id=\"$id\">
2982                         <span><img src=\"images/sign_excl.svg\"></span><span>$msg</span></div>";
2983         }
2984
2985         function print_notice($msg) {
2986                 return print format_notice($msg);
2987         }
2988
2989         function print_warning($msg) {
2990                 return print format_warning($msg);
2991         }
2992
2993         function print_error($msg) {
2994                 return print format_error($msg);
2995         }
2996
2997
2998         function T_sprintf() {
2999                 $args = func_get_args();
3000                 return vsprintf(__(array_shift($args)), $args);
3001         }
3002
3003         function format_inline_player($url, $ctype) {
3004
3005                 $entry = "";
3006
3007                 $url = htmlspecialchars($url);
3008
3009                 if (strpos($ctype, "audio/") === 0) {
3010
3011                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
3012                                 $_SESSION["hasMp3"])) {
3013
3014                                 $entry .= "<audio controls>
3015                                         <source type=\"$ctype\" src=\"$url\"></source>
3016                                         </audio>";
3017
3018                         } else {
3019
3020                                 $entry .= "<object type=\"application/x-shockwave-flash\"
3021                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
3022                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
3023                                         <param name=\"movie\"
3024                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
3025                                         </object>";
3026                         }
3027
3028                         if ($entry) $entry .= "&nbsp; <a target=\"_blank\"
3029                                 href=\"$url\">" . basename($url) . "</a>";
3030
3031                         return $entry;
3032
3033                 }
3034
3035                 return "";
3036
3037 /*              $filename = substr($url, strrpos($url, "/")+1);
3038
3039                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3040                         $filename . " (" . $ctype . ")" . "</a>"; */
3041
3042         }
3043
3044         function format_article($id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
3045                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3046
3047                 $rv = array();
3048
3049                 $rv['id'] = $id;
3050
3051                 /* we can figure out feed_id from article id anyway, why do we
3052                  * pass feed_id here? let's ignore the argument :(*/
3053
3054                 $result = db_query("SELECT feed_id FROM ttrss_user_entries
3055                         WHERE ref_id = '$id'");
3056
3057                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
3058
3059                 $rv['feed_id'] = $feed_id;
3060
3061                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
3062
3063                 if ($mark_as_read) {
3064                         $result = db_query("UPDATE ttrss_user_entries
3065                                 SET unread = false,last_read = NOW()
3066                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
3067
3068                         ccache_update($feed_id, $owner_uid);
3069                 }
3070
3071                 $result = db_query("SELECT id,title,link,content,feed_id,comments,int_id,
3072                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
3073                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
3074                         (SELECT hide_images FROM ttrss_feeds WHERE id = feed_id) as hide_images,
3075                         (SELECT always_display_enclosures FROM ttrss_feeds WHERE id = feed_id) as always_display_enclosures,
3076                         num_comments,
3077                         tag_cache,
3078                         author,
3079                         orig_feed_id,
3080                         note,
3081                         cached_content
3082                         FROM ttrss_entries,ttrss_user_entries
3083                         WHERE   id = '$id' AND ref_id = id AND owner_uid = $owner_uid");
3084
3085                 if ($result) {
3086
3087                         $line = db_fetch_assoc($result);
3088
3089                         $tag_cache = $line["tag_cache"];
3090
3091                         $line["tags"] = get_article_tags($id, $owner_uid, $line["tag_cache"]);
3092                         unset($line["tag_cache"]);
3093
3094                         $line["content"] = sanitize($line["content"], false, $owner_uid,        $line["site_url"]);
3095
3096                         foreach (PluginHost::getInstance()->get_hooks(PluginHost::HOOK_RENDER_ARTICLE) as $p) {
3097                                 $line = $p->hook_render_article($line);
3098                         }
3099
3100                         $num_comments = $line["num_comments"];
3101                         $entry_comments = "";
3102
3103                         if ($num_comments > 0) {
3104                                 if ($line["comments"]) {
3105                                         $comments_url = htmlspecialchars($line["comments"]);
3106                                 } else {
3107                                         $comments_url = htmlspecialchars($line["link"]);
3108                                 }
3109                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
3110                         } else {
3111                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
3112                                         $entry_comments = "<a target='_blank' href=\"".htmlspecialchars($line["comments"])."\">comments</a>";
3113                                 }
3114                         }
3115
3116                         if ($zoom_mode) {
3117                                 header("Content-Type: text/html");
3118                                 $rv['content'] .= "<html><head>
3119                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
3120                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
3121                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
3122                                         </head><body id=\"ttrssZoom\">";
3123                         }
3124
3125                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
3126
3127                         $rv['content'] .= "<div class=\"postHeader\" id=\"POSTHDR-$id\">";
3128
3129                         $entry_author = $line["author"];
3130
3131                         if ($entry_author) {
3132                                 $entry_author = __(" - ") . $entry_author;
3133                         }
3134
3135                         $parsed_updated = make_local_datetime($line["updated"], true,
3136                                 $owner_uid, true);
3137
3138                         $rv['content'] .= "<div class=\"postDate\">$parsed_updated</div>";
3139
3140                         if ($line["link"]) {
3141                                 $rv['content'] .= "<div class='postTitle'><a target='_blank'
3142                                         title=\"".htmlspecialchars($line['title'])."\"
3143                                         href=\"" .
3144                                         htmlspecialchars($line["link"]) . "\">" .
3145                                         $line["title"] . "</a>" .
3146                                         "<span class='author'>$entry_author</span></div>";
3147                         } else {
3148                                 $rv['content'] .= "<div class='postTitle'>" . $line["title"] . "$entry_author</div>";
3149                         }
3150
3151                         $tags_str = format_tags_string($line["tags"], $id);
3152                         $tags_str_full = join(", ", $line["tags"]);
3153
3154                         if (!$tags_str_full) $tags_str_full = __("no tags");
3155
3156                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
3157
3158                         $rv['content'] .= "<div class='postTags' style='float : right'>
3159                                 <img src='images/tag.png'
3160                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
3161
3162                         if (!$zoom_mode) {
3163                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
3164                                         <a title=\"".__('Edit tags for this article')."\"
3165                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
3166
3167                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
3168                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
3169                                         position=\"below\">$tags_str_full</div>";
3170
3171                                 foreach (PluginHost::getInstance()->get_hooks(PluginHost::HOOK_ARTICLE_BUTTON) as $p) {
3172                                         $rv['content'] .= $p->hook_article_button($line);
3173                                 }
3174
3175                         } else {
3176                                 $tags_str = strip_tags($tags_str);
3177                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
3178                         }
3179                         $rv['content'] .= "</div>";
3180                         $rv['content'] .= "<div clear='both'>";
3181
3182                         foreach (PluginHost::getInstance()->get_hooks(PluginHost::HOOK_ARTICLE_LEFT_BUTTON) as $p) {
3183                                 $rv['content'] .= $p->hook_article_left_button($line);
3184                         }
3185
3186                         $rv['content'] .= "$entry_comments</div>";
3187
3188                         if ($line["orig_feed_id"]) {
3189
3190                                 $tmp_result = db_query("SELECT * FROM ttrss_archived_feeds
3191                                         WHERE id = ".$line["orig_feed_id"]);
3192
3193                                 if (db_num_rows($tmp_result) != 0) {
3194
3195                                         $rv['content'] .= "<div clear='both'>";
3196                                         $rv['content'] .= __("Originally from:");
3197
3198                                         $rv['content'] .= "&nbsp;";
3199
3200                                         $tmp_line = db_fetch_assoc($tmp_result);
3201
3202                                         $rv['content'] .= "<a target='_blank'
3203                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
3204                                                 $tmp_line['title'] . "</a>";
3205
3206                                         $rv['content'] .= "&nbsp;";
3207
3208                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3209                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.svg'></a>";
3210
3211                                         $rv['content'] .= "</div>";
3212                                 }
3213                         }
3214
3215                         $rv['content'] .= "</div>";
3216
3217                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3218                                 if ($line['note']) {
3219                                         $rv['content'] .= format_article_note($id, $line['note'], !$zoom_mode);
3220                                 }
3221                         $rv['content'] .= "</div>";
3222
3223                         $rv['content'] .= "<div class=\"postContent\">";
3224
3225                         $rv['content'] .= $line["content"];
3226                         $rv['content'] .= format_article_enclosures($id,
3227                                 sql_bool_to_bool($line["always_display_enclosures"]),
3228                                 $line["content"],
3229                                 sql_bool_to_bool($line["hide_images"]));
3230
3231                         $rv['content'] .= "</div>";
3232
3233                         $rv['content'] .= "</div>";
3234
3235                 }
3236
3237                 if ($zoom_mode) {
3238                         $rv['content'] .= "
3239                                 <div class='footer'>
3240                                 <button onclick=\"return window.close()\">".
3241                                         __("Close this window")."</button></div>";
3242                         $rv['content'] .= "</body></html>";
3243                 }
3244
3245                 return $rv;
3246
3247         }
3248
3249         function print_checkpoint($n, $s) {
3250                 $ts = microtime(true);
3251                 echo sprintf("<!-- CP[$n] %.4f seconds -->\n", $ts - $s);
3252                 return $ts;
3253         }
3254
3255         function sanitize_tag($tag) {
3256                 $tag = trim($tag);
3257
3258                 $tag = mb_strtolower($tag, 'utf-8');
3259
3260                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3261
3262 //              $tag = str_replace('"', "", $tag);
3263 //              $tag = str_replace("+", " ", $tag);
3264                 $tag = str_replace("technorati tag: ", "", $tag);
3265
3266                 return $tag;
3267         }
3268
3269         function get_self_url_prefix() {
3270                 if (strrpos(SELF_URL_PATH, "/") === strlen(SELF_URL_PATH)-1) {
3271                         return substr(SELF_URL_PATH, 0, strlen(SELF_URL_PATH)-1);
3272                 } else {
3273                         return SELF_URL_PATH;
3274                 }
3275         }
3276
3277         /**
3278          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3279          *
3280          * @return string The Mozilla Firefox feed adding URL.
3281          */
3282         function add_feed_url() {
3283                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3284
3285                 $url_path = get_self_url_prefix() .
3286                         "/public.php?op=subscribe&feed_url=%s";
3287                 return $url_path;
3288         } // function add_feed_url
3289
3290         function encrypt_password($pass, $salt = '', $mode2 = false) {
3291                 if ($salt && $mode2) {
3292                         return "MODE2:" . hash('sha256', $salt . $pass);
3293                 } else if ($salt) {
3294                         return "SHA1X:" . sha1("$salt:$pass");
3295                 } else {
3296                         return "SHA1:" . sha1($pass);
3297                 }
3298         } // function encrypt_password
3299
3300         function load_filters($feed_id, $owner_uid, $action_id = false) {
3301                 $filters = array();
3302
3303                 $cat_id = (int)getFeedCategory($feed_id);
3304
3305                 $result = db_query("SELECT * FROM ttrss_filters2 WHERE
3306                         owner_uid = $owner_uid AND enabled = true ORDER BY order_id, title");
3307
3308                 $check_cats = join(",", array_merge(
3309                         getParentCategories($cat_id, $owner_uid),
3310                         array($cat_id)));
3311
3312                 while ($line = db_fetch_assoc($result)) {
3313                         $filter_id = $line["id"];
3314
3315                         $result2 = db_query("SELECT
3316                                 r.reg_exp, r.inverse, r.feed_id, r.cat_id, r.cat_filter, t.name AS type_name
3317                                 FROM ttrss_filters2_rules AS r,
3318                                 ttrss_filter_types AS t
3319                                 WHERE
3320                                         (cat_id IS NULL OR cat_id IN ($check_cats)) AND
3321                                         (feed_id IS NULL OR feed_id = '$feed_id') AND
3322                                         filter_type = t.id AND filter_id = '$filter_id'");
3323
3324                         $rules = array();
3325                         $actions = array();
3326
3327                         while ($rule_line = db_fetch_assoc($result2)) {
3328 #                               print_r($rule_line);
3329
3330                                 $rule = array();
3331                                 $rule["reg_exp"] = $rule_line["reg_exp"];
3332                                 $rule["type"] = $rule_line["type_name"];
3333                                 $rule["inverse"] = sql_bool_to_bool($rule_line["inverse"]);
3334
3335                                 array_push($rules, $rule);
3336                         }
3337
3338                         $result2 = db_query("SELECT a.action_param,t.name AS type_name
3339                                 FROM ttrss_filters2_actions AS a,
3340                                 ttrss_filter_actions AS t
3341                                 WHERE
3342                                         action_id = t.id AND filter_id = '$filter_id'");
3343
3344                         while ($action_line = db_fetch_assoc($result2)) {
3345 #                               print_r($action_line);
3346
3347                                 $action = array();
3348                                 $action["type"] = $action_line["type_name"];
3349                                 $action["param"] = $action_line["action_param"];
3350
3351                                 array_push($actions, $action);
3352                         }
3353
3354
3355                         $filter = array();
3356                         $filter["match_any_rule"] = sql_bool_to_bool($line["match_any_rule"]);
3357                         $filter["inverse"] = sql_bool_to_bool($line["inverse"]);
3358                         $filter["rules"] = $rules;
3359                         $filter["actions"] = $actions;
3360
3361                         if (count($rules) > 0 && count($actions) > 0) {
3362                                 array_push($filters, $filter);
3363                         }
3364                 }
3365
3366                 return $filters;
3367         }
3368
3369         function get_score_pic($score) {
3370                 if ($score > 100) {
3371                         return "score_high.png";
3372                 } else if ($score > 0) {
3373                         return "score_half_high.png";
3374                 } else if ($score < -100) {
3375                         return "score_low.png";
3376                 } else if ($score < 0) {
3377                         return "score_half_low.png";
3378                 } else {
3379                         return "score_neutral.png";
3380                 }
3381         }
3382
3383         function feed_has_icon($id) {
3384                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3385         }
3386
3387         function init_plugins() {
3388                 PluginHost::getInstance()->load(PLUGINS, PluginHost::KIND_ALL);
3389
3390                 return true;
3391         }
3392
3393         function format_tags_string($tags, $id) {
3394                 if (!is_array($tags) || count($tags) == 0) {
3395                         return __("no tags");
3396                 } else {
3397                         $maxtags = min(5, count($tags));
3398
3399                         for ($i = 0; $i < $maxtags; $i++) {
3400                                 $tags_str .= "<a href=\"#\" onclick=\"viewfeed('".$tags[$i]."'\")>" . $tags[$i] . "</a>, ";
3401                         }
3402
3403                         $tags_str = mb_substr($tags_str, 0, mb_strlen($tags_str)-2);
3404
3405                         if (count($tags) > $maxtags)
3406                                 $tags_str .= ", &hellip;";
3407
3408                         return $tags_str;
3409                 }
3410         }
3411
3412         function format_article_labels($labels, $id) {
3413
3414                 if (!is_array($labels)) return '';
3415
3416                 $labels_str = "";
3417
3418                 foreach ($labels as $l) {
3419                         $labels_str .= sprintf("<span class='hlLabelRef'
3420                                 style='color : %s; background-color : %s'>%s</span>",
3421                                         $l[2], $l[3], $l[1]);
3422                         }
3423
3424                 return $labels_str;
3425
3426         }
3427
3428         function format_article_note($id, $note, $allow_edit = true) {
3429
3430                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
3431                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
3432                         ($allow_edit ? __('(edit note)') : "")."</div>$note</div>";
3433
3434                 return $str;
3435         }
3436
3437
3438         function get_feed_category($feed_cat, $parent_cat_id = false) {
3439                 if ($parent_cat_id) {
3440                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3441                         $parent_insert = "'$parent_cat_id'";
3442                 } else {
3443                         $parent_qpart = "parent_cat IS NULL";
3444                         $parent_insert = "NULL";
3445                 }
3446
3447                 $result = db_query(
3448                         "SELECT id FROM ttrss_feed_categories
3449                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3450
3451                 if (db_num_rows($result) == 0) {
3452                         return false;
3453                 } else {
3454                         return db_fetch_result($result, 0, "id");
3455                 }
3456         }
3457
3458         function add_feed_category($feed_cat, $parent_cat_id = false) {
3459
3460                 if (!$feed_cat) return false;
3461
3462                 db_query("BEGIN");
3463
3464                 if ($parent_cat_id) {
3465                         $parent_qpart = "parent_cat = '$parent_cat_id'";
3466                         $parent_insert = "'$parent_cat_id'";
3467                 } else {
3468                         $parent_qpart = "parent_cat IS NULL";
3469                         $parent_insert = "NULL";
3470                 }
3471
3472                 $feed_cat = mb_substr($feed_cat, 0, 250);
3473
3474                 $result = db_query(
3475                         "SELECT id FROM ttrss_feed_categories
3476                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
3477
3478                 if (db_num_rows($result) == 0) {
3479
3480                         $result = db_query(
3481                                 "INSERT INTO ttrss_feed_categories (owner_uid,title,parent_cat)
3482                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat', $parent_insert)");
3483
3484                         db_query("COMMIT");
3485
3486                         return true;
3487                 }
3488
3489                 return false;
3490         }
3491
3492         function getArticleFeed($id) {
3493                 $result = db_query("SELECT feed_id FROM ttrss_user_entries
3494                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3495
3496                 if (db_num_rows($result) != 0) {
3497                         return db_fetch_result($result, 0, "feed_id");
3498                 } else {
3499                         return 0;
3500                 }
3501         }
3502
3503         /**
3504          * Fixes incomplete URLs by prepending "http://".
3505          * Also replaces feed:// with http://, and
3506          * prepends a trailing slash if the url is a domain name only.
3507          *
3508          * @param string $url Possibly incomplete URL
3509          *
3510          * @return string Fixed URL.
3511          */
3512         function fix_url($url) {
3513                 if (strpos($url, '://') === false) {
3514                         $url = 'http://' . $url;
3515                 } else if (substr($url, 0, 5) == 'feed:') {
3516                         $url = 'http:' . substr($url, 5);
3517                 }
3518
3519                 //prepend slash if the URL has no slash in it
3520                 // "http://www.example" -> "http://www.example/"
3521                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
3522                         $url .= '/';
3523                 }
3524
3525                 if ($url != "http:///")
3526                         return $url;
3527                 else
3528                         return '';
3529         }
3530
3531         function validate_feed_url($url) {
3532                 $parts = parse_url($url);
3533
3534                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
3535
3536         }
3537
3538         function get_article_enclosures($id) {
3539
3540                 $query = "SELECT * FROM ttrss_enclosures
3541                         WHERE post_id = '$id' AND content_url != ''";
3542
3543                 $rv = array();
3544
3545                 $result = db_query($query);
3546
3547                 if (db_num_rows($result) > 0) {
3548                         while ($line = db_fetch_assoc($result)) {
3549                                 array_push($rv, $line);
3550                         }
3551                 }
3552
3553                 return $rv;
3554         }
3555
3556         function save_email_address($email) {
3557                 // FIXME: implement persistent storage of emails
3558
3559                 if (!$_SESSION['stored_emails'])
3560                         $_SESSION['stored_emails'] = array();
3561
3562                 if (!in_array($email, $_SESSION['stored_emails']))
3563                         array_push($_SESSION['stored_emails'], $email);
3564         }
3565
3566
3567         function get_feed_access_key($feed_id, $is_cat, $owner_uid = false) {
3568
3569                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3570
3571                 $sql_is_cat = bool_to_sql_bool($is_cat);
3572
3573                 $result = db_query("SELECT access_key FROM ttrss_access_keys
3574                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
3575                         AND owner_uid = " . $owner_uid);
3576
3577                 if (db_num_rows($result) == 1) {
3578                         return db_fetch_result($result, 0, "access_key");
3579                 } else {
3580                         $key = db_escape_string(sha1(uniqid(rand(), true)));
3581
3582                         $result = db_query("INSERT INTO ttrss_access_keys
3583                                 (access_key, feed_id, is_cat, owner_uid)
3584                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
3585
3586                         return $key;
3587                 }
3588                 return false;
3589         }
3590
3591         function get_feeds_from_html($url, $content)
3592         {
3593                 $url     = fix_url($url);
3594                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
3595
3596                 libxml_use_internal_errors(true);
3597
3598                 $doc = new DOMDocument();
3599                 $doc->loadHTML($content);
3600                 $xpath = new DOMXPath($doc);
3601                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
3602                 $feedUrls = array();
3603                 foreach ($entries as $entry) {
3604                         if ($entry->hasAttribute('href')) {
3605                                 $title = $entry->getAttribute('title');
3606                                 if ($title == '') {
3607                                         $title = $entry->getAttribute('type');
3608                                 }
3609                                 $feedUrl = rewrite_relative_url(
3610                                         $baseUrl, $entry->getAttribute('href')
3611                                 );
3612                                 $feedUrls[$feedUrl] = $title;
3613                         }
3614                 }
3615                 return $feedUrls;
3616         }
3617
3618         function is_html($content) {
3619                 return preg_match("/<html|DOCTYPE html/i", substr($content, 0, 20)) !== 0;
3620         }
3621
3622         function url_is_html($url, $login = false, $pass = false) {
3623                 return is_html(fetch_file_contents($url, false, $login, $pass));
3624         }
3625
3626         function print_label_select($name, $value, $attributes = "") {
3627
3628                 $result = db_query("SELECT caption FROM ttrss_labels2
3629                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
3630
3631                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
3632                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
3633
3634                 while ($line = db_fetch_assoc($result)) {
3635
3636                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
3637
3638                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
3639                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
3640
3641                 }
3642
3643 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
3644
3645                 print "</select>";
3646
3647
3648         }
3649
3650         function format_article_enclosures($id, $always_display_enclosures,
3651                                         $article_content, $hide_images = false) {
3652
3653                 $result = get_article_enclosures($id);
3654                 $rv = '';
3655
3656                 if (count($result) > 0) {
3657
3658                         $entries_html = array();
3659                         $entries = array();
3660                         $entries_inline = array();
3661
3662                         foreach ($result as $line) {
3663
3664                                 $url = $line["content_url"];
3665                                 $ctype = $line["content_type"];
3666
3667                                 if (!$ctype) $ctype = __("unknown type");
3668
3669                                 $filename = substr($url, strrpos($url, "/")+1);
3670
3671                                 $player = format_inline_player($url, $ctype);
3672
3673                                 if ($player) array_push($entries_inline, $player);
3674
3675 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3676 #                                       $filename . " (" . $ctype . ")" . "</a>";
3677
3678                                 $entry = "<div onclick=\"window.open('".htmlspecialchars($url)."')\"
3679                                         dojoType=\"dijit.MenuItem\">$filename ($ctype)</div>";
3680
3681                                 array_push($entries_html, $entry);
3682
3683                                 $entry = array();
3684
3685                                 $entry["type"] = $ctype;
3686                                 $entry["filename"] = $filename;
3687                                 $entry["url"] = $url;
3688
3689                                 array_push($entries, $entry);
3690                         }
3691
3692                         if ($_SESSION['uid'] && !get_pref("STRIP_IMAGES") && !$_SESSION["bw_limit"]) {
3693                                 if ($always_display_enclosures ||
3694                                                         !preg_match("/<img/i", $article_content)) {
3695
3696                                         foreach ($entries as $entry) {
3697
3698                                                 if (preg_match("/image/", $entry["type"]) ||
3699                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
3700
3701                                                                 if (!$hide_images) {
3702                                                                         $rv .= "<p><img
3703                                                                         alt=\"".htmlspecialchars($entry["filename"])."\"
3704                                                                         src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
3705                                                                 } else {
3706                                                                         $rv .= "<p><a target=\"_blank\"
3707                                                                         href=\"".htmlspecialchars($entry["url"])."\"
3708                                                                         >" .htmlspecialchars($entry["url"]) . "</a></p>";
3709
3710                                                                 }
3711                                                 }
3712                                         }
3713                                 }
3714                         }
3715
3716                         if (count($entries_inline) > 0) {
3717                                 $rv .= "<hr clear='both'/>";
3718                                 foreach ($entries_inline as $entry) { $rv .= $entry; };
3719                                 $rv .= "<hr clear='both'/>";
3720                         }
3721
3722                         $rv .= "<select class=\"attachments\" onchange=\"openSelectedAttachment(this)\">".
3723                                 "<option value=''>" . __('Attachments')."</option>";
3724
3725                         foreach ($entries as $entry) {
3726                                 $rv .= "<option value=\"".htmlspecialchars($entry["url"])."\">" . htmlspecialchars($entry["filename"]) . "</option>";
3727
3728                         };
3729
3730                         $rv .= "</select>";
3731                 }
3732
3733                 return $rv;
3734         }
3735
3736         function getLastArticleId() {
3737                 $result = db_query("SELECT MAX(ref_id) AS id FROM ttrss_user_entries
3738                         WHERE owner_uid = " . $_SESSION["uid"]);
3739
3740                 if (db_num_rows($result) == 1) {
3741                         return db_fetch_result($result, 0, "id");
3742                 } else {
3743                         return -1;
3744                 }
3745         }
3746
3747         function build_url($parts) {
3748                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
3749         }
3750
3751         /**
3752          * Converts a (possibly) relative URL to a absolute one.
3753          *
3754          * @param string $url     Base URL (i.e. from where the document is)
3755          * @param string $rel_url Possibly relative URL in the document
3756          *
3757          * @return string Absolute URL
3758          */
3759         function rewrite_relative_url($url, $rel_url) {
3760                 if (strpos($rel_url, "magnet:") === 0) {
3761                         return $rel_url;
3762                 } else if (strpos($rel_url, "://") !== false) {
3763                         return $rel_url;
3764                 } else if (strpos($rel_url, "//") === 0) {
3765                         # protocol-relative URL (rare but they exist)
3766                         return $rel_url;
3767                 } else if (strpos($rel_url, "/") === 0)
3768                 {
3769                         $parts = parse_url($url);
3770                         $parts['path'] = $rel_url;
3771
3772                         return build_url($parts);
3773
3774                 } else {
3775                         $parts = parse_url($url);
3776                         if (!isset($parts['path'])) {
3777                                 $parts['path'] = '/';
3778                         }
3779                         $dir = $parts['path'];
3780                         if (substr($dir, -1) !== '/') {
3781                                 $dir = dirname($parts['path']);
3782                                 $dir !== '/' && $dir .= '/';
3783                         }
3784                         $parts['path'] = $dir . $rel_url;
3785
3786                         return build_url($parts);
3787                 }
3788         }
3789
3790         function sphinx_search($query, $offset = 0, $limit = 30) {
3791                 require_once 'lib/sphinxapi.php';
3792
3793                 $sphinxClient = new SphinxClient();
3794
3795                 $sphinxpair = explode(":", SPHINX_SERVER, 2);
3796
3797                 $sphinxClient->SetServer($sphinxpair[0], $sphinxpair[1]);
3798                 $sphinxClient->SetConnectTimeout(1);
3799
3800                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
3801                         'feed_title' => 20));
3802
3803                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
3804                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
3805                 $sphinxClient->SetLimits($offset, $limit, 1000);
3806                 $sphinxClient->SetArrayResult(false);
3807                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
3808
3809                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
3810
3811                 $ids = array();
3812
3813                 if (is_array($result['matches'])) {
3814                         foreach (array_keys($result['matches']) as $int_id) {
3815                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
3816                                 array_push($ids, $ref_id);
3817                         }
3818                 }
3819
3820                 return $ids;
3821         }
3822
3823         function cleanup_tags($days = 14, $limit = 1000) {
3824
3825                 if (DB_TYPE == "pgsql") {
3826                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
3827                 } else if (DB_TYPE == "mysql") {
3828                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
3829                 }
3830
3831                 $tags_deleted = 0;
3832
3833                 while ($limit > 0) {
3834                         $limit_part = 500;
3835
3836                         $query = "SELECT ttrss_tags.id AS id
3837                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
3838                                 WHERE post_int_id = int_id AND $interval_query AND
3839                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
3840
3841                         $result = db_query($query);
3842
3843                         $ids = array();
3844
3845                         while ($line = db_fetch_assoc($result)) {
3846                                 array_push($ids, $line['id']);
3847                         }
3848
3849                         if (count($ids) > 0) {
3850                                 $ids = join(",", $ids);
3851
3852                                 $tmp_result = db_query("DELETE FROM ttrss_tags WHERE id IN ($ids)");
3853                                 $tags_deleted += db_affected_rows($tmp_result);
3854                         } else {
3855                                 break;
3856                         }
3857
3858                         $limit -= $limit_part;
3859                 }
3860
3861                 return $tags_deleted;
3862         }
3863
3864         function print_user_stylesheet() {
3865                 $value = get_pref('USER_STYLESHEET');
3866
3867                 if ($value) {
3868                         print "<style type=\"text/css\">";
3869                         print str_replace("<br/>", "\n", $value);
3870                         print "</style>";
3871                 }
3872
3873         }
3874
3875         function rewrite_urls($html) {
3876                 libxml_use_internal_errors(true);
3877
3878                 $charset_hack = '<head>
3879                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
3880                 </head>';
3881
3882                 $doc = new DOMDocument();
3883                 $doc->loadHTML($charset_hack . $html);
3884                 $xpath = new DOMXPath($doc);
3885
3886                 $entries = $xpath->query('//*/text()');
3887
3888                 foreach ($entries as $entry) {
3889                         if (strstr($entry->wholeText, "://") !== false) {
3890                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
3891                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
3892
3893                                 if ($text != $entry->wholeText) {
3894                                         $cdoc = new DOMDocument();
3895                                         $cdoc->loadHTML($charset_hack . $text);
3896
3897
3898                                         foreach ($cdoc->childNodes as $cnode) {
3899                                                 $cnode = $doc->importNode($cnode, true);
3900
3901                                                 if ($cnode) {
3902                                                         $entry->parentNode->insertBefore($cnode);
3903                                                 }
3904                                         }
3905
3906                                         $entry->parentNode->removeChild($entry);
3907
3908                                 }
3909                         }
3910                 }
3911
3912                 $node = $doc->getElementsByTagName('body')->item(0);
3913
3914                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
3915                 if ($node)
3916                         return $doc->saveXML($node);
3917                 else
3918                         return $html;
3919         }
3920
3921         function filter_to_sql($filter, $owner_uid) {
3922                 $query = array();
3923
3924                 if (DB_TYPE == "pgsql")
3925                         $reg_qpart = "~";
3926                 else
3927                         $reg_qpart = "REGEXP";
3928
3929                 foreach ($filter["rules"] AS $rule) {
3930                         $regexp_valid = preg_match('/' . $rule['reg_exp'] . '/',
3931                                 $rule['reg_exp']) !== FALSE;
3932
3933                         if ($regexp_valid) {
3934
3935                                 $rule['reg_exp'] = db_escape_string($rule['reg_exp']);
3936
3937                                         switch ($rule["type"]) {
3938                                         case "title":
3939                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3940                                                         $rule['reg_exp'] . "')";
3941                                                 break;
3942                                         case "content":
3943                                                 $qpart = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
3944                                                         $rule['reg_exp'] . "')";
3945                                                 break;
3946                                         case "both":
3947                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
3948                                                         $rule['reg_exp'] . "') OR LOWER(" .
3949                                                         "ttrss_entries.content) $reg_qpart LOWER('" . $rule['reg_exp'] . "')";
3950                                                 break;
3951                                         case "tag":
3952                                                 $qpart = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
3953                                                         $rule['reg_exp'] . "')";
3954                                                 break;
3955                                         case "link":
3956                                                 $qpart = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
3957                                                         $rule['reg_exp'] . "')";
3958                                                 break;
3959                                         case "author":
3960                                                 $qpart = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
3961                                                         $rule['reg_exp'] . "')";
3962                                                 break;
3963                                 }
3964
3965                                 if (isset($rule['inverse'])) $qpart = "NOT ($qpart)";
3966
3967                                 if (isset($rule["feed_id"]) && $rule["feed_id"] > 0) {
3968                                         $qpart .= " AND feed_id = " . db_escape_string($rule["feed_id"]);
3969                                 }
3970
3971                                 if (isset($rule["cat_id"])) {
3972
3973                                         if ($rule["cat_id"] > 0) {
3974                                                 $children = getChildCategories($rule["cat_id"], $owner_uid);
3975                                                 array_push($children, $rule["cat_id"]);
3976
3977                                                 $children = join(",", $children);
3978
3979                                                 $cat_qpart = "cat_id IN ($children)";
3980                                         } else {
3981                                                 $cat_qpart = "cat_id IS NULL";
3982                                         }
3983
3984                                         $qpart .= " AND $cat_qpart";
3985                                 }
3986
3987                                 array_push($query, "($qpart)");
3988
3989                         }
3990                 }
3991
3992                 if (count($query) > 0) {
3993                         $fullquery = "(" . join($filter["match_any_rule"] ? "OR" : "AND", $query) . ")";
3994                 } else {
3995                         $fullquery = "(false)";
3996                 }
3997
3998                 if ($filter['inverse']) $fullquery = "(NOT $fullquery)";
3999
4000                 return $fullquery;
4001         }
4002
4003         if (!function_exists('gzdecode')) {
4004                 function gzdecode($string) { // no support for 2nd argument
4005                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
4006                                 base64_encode($string));
4007                 }
4008         }
4009
4010         function get_random_bytes($length) {
4011                 if (function_exists('openssl_random_pseudo_bytes')) {
4012                         return openssl_random_pseudo_bytes($length);
4013                 } else {
4014                         $output = "";
4015
4016                         for ($i = 0; $i < $length; $i++)
4017                                 $output .= chr(mt_rand(0, 255));
4018
4019                         return $output;
4020                 }
4021         }
4022
4023         function read_stdin() {
4024                 $fp = fopen("php://stdin", "r");
4025
4026                 if ($fp) {
4027                         $line = trim(fgets($fp));
4028                         fclose($fp);
4029                         return $line;
4030                 }
4031
4032                 return null;
4033         }
4034
4035         function tmpdirname($path, $prefix) {
4036                 // Use PHP's tmpfile function to create a temporary
4037                 // directory name. Delete the file and keep the name.
4038                 $tempname = tempnam($path,$prefix);
4039                 if (!$tempname)
4040                         return false;
4041
4042                 if (!unlink($tempname))
4043                         return false;
4044
4045        return $tempname;
4046         }
4047
4048         function getFeedCategory($feed) {
4049                 $result = db_query("SELECT cat_id FROM ttrss_feeds
4050                         WHERE id = '$feed'");
4051
4052                 if (db_num_rows($result) > 0) {
4053                         return db_fetch_result($result, 0, "cat_id");
4054                 } else {
4055                         return false;
4056                 }
4057
4058         }
4059
4060         function implements_interface($class, $interface) {
4061                 return in_array($interface, class_implements($class));
4062         }
4063
4064         function geturl($url){
4065
4066                 if (!function_exists('curl_init'))
4067                         return user_error('CURL Must be installed for geturl function to work. Ask your host to enable it or uncomment extension=php_curl.dll in php.ini', E_USER_ERROR);
4068
4069                 $curl = curl_init();
4070                 $header[0] = "Accept: text/xml,application/xml,application/xhtml+xml,";
4071                 $header[0] .= "text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5";
4072                 $header[] = "Cache-Control: max-age=0";
4073                 $header[] = "Connection: keep-alive";
4074                 $header[] = "Keep-Alive: 300";
4075                 $header[] = "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7";
4076                 $header[] = "Accept-Language: en-us,en;q=0.5";
4077                 $header[] = "Pragma: ";
4078
4079                 curl_setopt($curl, CURLOPT_URL, $url);
4080                 curl_setopt($curl, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20100101 Firefox/5.0 Firefox/5.0');
4081                 curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
4082                 curl_setopt($curl, CURLOPT_HEADER, true);
4083                 curl_setopt($curl, CURLOPT_REFERER, $url);
4084                 curl_setopt($curl, CURLOPT_ENCODING, 'gzip,deflate');
4085                 curl_setopt($curl, CURLOPT_AUTOREFERER, true);
4086                 curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
4087                 //curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); //CURLOPT_FOLLOWLOCATION Disabled...
4088                 curl_setopt($curl, CURLOPT_TIMEOUT, 60);
4089
4090                 $html = curl_exec($curl);
4091
4092                 $status = curl_getinfo($curl);
4093                 curl_close($curl);
4094
4095                 if($status['http_code']!=200){
4096                         if($status['http_code'] == 301 || $status['http_code'] == 302) {
4097                                 list($header) = explode("\r\n\r\n", $html, 2);
4098                                 $matches = array();
4099                                 preg_match("/(Location:|URI:)[^(\n)]*/", $header, $matches);
4100                                 $url = trim(str_replace($matches[1],"",$matches[0]));
4101                                 $url_parsed = parse_url($url);
4102                                 return (isset($url_parsed))? geturl($url, $referer):'';
4103                         }
4104                         $oline='';
4105                         foreach($status as $key=>$eline){$oline.='['.$key.']'.$eline.' ';}
4106                         $line =$oline." \r\n ".$url."\r\n-----------------\r\n";
4107 #                       $handle = @fopen('./curl.error.log', 'a');
4108 #                       fwrite($handle, $line);
4109                         return FALSE;
4110                 }
4111                 return $url;
4112         }
4113
4114         function get_minified_js($files) {
4115                 require_once 'lib/jshrink/Minifier.php';
4116
4117                 $rv = '';
4118
4119                 foreach ($files as $js) {
4120                         if (!isset($_GET['debug'])) {
4121                                 $cached_file = CACHE_DIR . "/js/$js.js";
4122
4123                                 if (file_exists($cached_file) &&
4124                                                 is_readable($cached_file) &&
4125                                                 filemtime($cached_file) >= filemtime("js/$js.js")) {
4126
4127                                         $rv .= file_get_contents($cached_file);
4128
4129                                 } else {
4130                                         $minified = JShrink\Minifier::minify(file_get_contents("js/$js.js"));
4131                                         file_put_contents($cached_file, $minified);
4132                                         $rv .= $minified;
4133                                 }
4134                         } else {
4135                                 $rv .= file_get_contents("js/$js.js");
4136                         }
4137                 }
4138
4139                 return $rv;
4140         }
4141
4142         function stylesheet_tag($filename) {
4143                 $timestamp = filemtime($filename);
4144
4145                 echo "<link rel=\"stylesheet\" type=\"text/css\" href=\"$filename?$timestamp\"/>\n";
4146         }
4147
4148         function javascript_tag($filename) {
4149                 $query = "";
4150
4151                 if (!(strpos($filename, "?") === FALSE)) {
4152                         $query = substr($filename, strpos($filename, "?")+1);
4153                         $filename = substr($filename, 0, strpos($filename, "?"));
4154                 }
4155
4156                 $timestamp = filemtime($filename);
4157
4158                 if ($query) $timestamp .= "&$query";
4159
4160                 echo "<script type=\"text/javascript\" charset=\"utf-8\" src=\"$filename?$timestamp\"></script>\n";
4161         }
4162
4163         function calculate_dep_timestamp() {
4164                 $files = array_merge(glob("js/*.js"), glob("*.css"));
4165
4166                 $max_ts = -1;
4167
4168                 foreach ($files as $file) {
4169                         if (filemtime($file) > $max_ts) $max_ts = filemtime($file);
4170                 }
4171
4172                 return $max_ts;
4173         }
4174
4175         function T_js_decl($s1, $s2) {
4176                 if ($s1 && $s2) {
4177                         $s1 = preg_replace("/\n/", "", $s1);
4178                         $s2 = preg_replace("/\n/", "", $s2);
4179
4180                         $s1 = preg_replace("/\"/", "\\\"", $s1);
4181                         $s2 = preg_replace("/\"/", "\\\"", $s2);
4182
4183                         return "T_messages[\"$s1\"] = \"$s2\";\n";
4184                 }
4185         }
4186
4187         function init_js_translations() {
4188
4189         print 'var T_messages = new Object();
4190
4191                 function __(msg) {
4192                         if (T_messages[msg]) {
4193                                 return T_messages[msg];
4194                         } else {
4195                                 return msg;
4196                         }
4197                 }
4198
4199                 function ngettext(msg1, msg2, n) {
4200                         return (parseInt(n) > 1) ? msg2 : msg1;
4201                 }';
4202
4203                 $l10n = _get_reader();
4204
4205                 for ($i = 0; $i < $l10n->total; $i++) {
4206                         $orig = $l10n->get_original_string($i);
4207                         $translation = __($orig);
4208
4209                         print T_js_decl($orig, $translation);
4210                 }
4211         }
4212
4213         function label_to_feed_id($label) {
4214                 return LABEL_BASE_INDEX - 1 - abs($label);
4215         }
4216
4217         function feed_to_label_id($feed) {
4218                 return LABEL_BASE_INDEX - 1 + abs($feed);
4219         }
4220
4221         function format_libxml_error($error) {
4222                 return T_sprintf("LibXML error %s at line %d (column %d): %s",
4223                                 $error->code, $error->line, $error->column,
4224                                 $error->message);
4225         }
4226
4227 ?>