include/functions.php

   1 <?php
   2         define('EXPECTED_CONFIG_VERSION', 26);
   3         define('SCHEMA_VERSION', 96);
   4
   5         $fetch_last_error = false;
   6
   7         function __autoload($class) {
   8                 $class_file = str_replace("_", "/", strtolower(basename($class)));
   9
  10                 $file = dirname(__FILE__)."/../classes/$class_file.php";
  11
  12                 if (file_exists($file)) {
  13                         require $file;
  14                 }
  15         }
  16
  17         mb_internal_encoding("UTF-8");
  18         date_default_timezone_set('UTC');
  19         if (defined('E_DEPRECATED')) {
  20                 error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
  21         } else {
  22                 error_reporting(E_ALL & ~E_NOTICE);
  23         }
  24
  25         require_once 'config.php';
  26
  27         if (DB_TYPE == "pgsql") {
  28                 define('SUBSTRING_FOR_DATE', 'SUBSTRING_FOR_DATE');
  29         } else {
  30                 define('SUBSTRING_FOR_DATE', 'SUBSTRING');
  31         }
  32
  33         define('THEME_VERSION_REQUIRED', 1.1);
  34
  35         /**
  36          * Return available translations names.
  37          *
  38          * @access public
  39          * @return array A array of available translations.
  40          */
  41         function get_translations() {
  42                 $tr = array(
  43                                         "auto"  => "Detect automatically",
  44                                         "ca_CA" => "Català",
  45                                         "en_US" => "English",
  46                                         "es_ES" => "Español",
  47                                         "de_DE" => "Deutsch",
  48                                         "fr_FR" => "Français",
  49                                         "hu_HU" => "Magyar (Hungarian)",
  50                                         "it_IT" => "Italiano",
  51                                         "ja_JP" => "日本語 (Japanese)",
  52                                         "nb_NO" => "Norwegian bokmål",
  53                                         "ru_RU" => "Русский",
  54                                         "pt_BR" => "Portuguese/Brazil",
  55                                         "zh_CN" => "Simplified Chinese");
  56
  57                 return $tr;
  58         }
  59
  60         require_once "lib/accept-to-gettext.php";
  61         require_once "lib/gettext/gettext.inc";
  62
  63         function startup_gettext() {
  64
  65                 # Get locale from Accept-Language header
  66                 $lang = al2gt(array_keys(get_translations()), "text/html");
  67
  68                 if (defined('_TRANSLATION_OVERRIDE_DEFAULT')) {
  69                         $lang = _TRANSLATION_OVERRIDE_DEFAULT;
  70                 }
  71
  72                 if ($_COOKIE["ttrss_lang"] && $_COOKIE["ttrss_lang"] != "auto") {
  73                         $lang = $_COOKIE["ttrss_lang"];
  74                 }
  75
  76                 /* In login action of mobile version */
  77                 if ($_POST["language"] && defined('MOBILE_VERSION')) {
  78                         $lang = $_POST["language"];
  79                         $_COOKIE["ttrss_lang"] = $lang;
  80                 }
  81
  82                 if ($lang) {
  83                         if (defined('LC_MESSAGES')) {
  84                                 _setlocale(LC_MESSAGES, $lang);
  85                         } else if (defined('LC_ALL')) {
  86                                 _setlocale(LC_ALL, $lang);
  87                         }
  88
  89                         if (defined('MOBILE_VERSION')) {
  90                                 _bindtextdomain("messages", "../locale");
  91                         } else {
  92                                 _bindtextdomain("messages", "locale");
  93                         }
  94
  95                         _textdomain("messages");
  96                         _bind_textdomain_codeset("messages", "UTF-8");
  97                 }
  98         }
  99
 100         startup_gettext();
 101
 102         require_once 'db-prefs.php';
 103         require_once 'version.php';
 104
 105         define('MAGPIE_OUTPUT_ENCODING', 'UTF-8');
 106
 107         define('SELF_USER_AGENT', 'Tiny Tiny RSS/' . VERSION . ' (http://tt-rss.org/)');
 108         define('MAGPIE_USER_AGENT', SELF_USER_AGENT);
 109
 110         ini_set('user_agent', SELF_USER_AGENT);
 111
 112         require_once 'lib/pubsubhubbub/publisher.php';
 113
 114         $purifier = false;
 115
 116         $tz_offset = -1;
 117         $utc_tz = new DateTimeZone('UTC');
 118         $schema_version = false;
 119
 120         /**
 121          * Print a timestamped debug message.
 122          *
 123          * @param string $msg The debug message.
 124          * @return void
 125          */
 126         function _debug($msg) {
 127                 if (defined('QUIET') && QUIET) {
 128                         return;
 129                 }
 130                 $ts = strftime("%H:%M:%S", time());
 131                 if (function_exists('posix_getpid')) {
 132                         $ts = "$ts/" . posix_getpid();
 133                 }
 134                 print "[$ts] $msg\n";
 135         } // function _debug
 136
 137         /**
 138          * Purge a feed old posts.
 139          *
 140          * @param mixed $link A database connection.
 141          * @param mixed $feed_id The id of the purged feed.
 142          * @param mixed $purge_interval Olderness of purged posts.
 143          * @param boolean $debug Set to True to enable the debug. False by default.
 144          * @access public
 145          * @return void
 146          */
 147         function purge_feed($link, $feed_id, $purge_interval, $debug = false) {
 148
 149                 if (!$purge_interval) $purge_interval = feed_purge_interval($link, $feed_id);
 150
 151                 $rows = -1;
 152
 153                 $result = db_query($link,
 154                         "SELECT owner_uid FROM ttrss_feeds WHERE id = '$feed_id'");
 155
 156                 $owner_uid = false;
 157
 158                 if (db_num_rows($result) == 1) {
 159                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 160                 }
 161
 162                 if ($purge_interval == -1 || !$purge_interval) {
 163                         if ($owner_uid) {
 164                                 ccache_update($link, $feed_id, $owner_uid);
 165                         }
 166                         return;
 167                 }
 168
 169                 if (!$owner_uid) return;
 170
 171                 if (FORCE_ARTICLE_PURGE == 0) {
 172                         $purge_unread = get_pref($link, "PURGE_UNREAD_ARTICLES",
 173                                 $owner_uid, false);
 174                 } else {
 175                         $purge_unread = true;
 176                         $purge_interval = FORCE_ARTICLE_PURGE;
 177                 }
 178
 179                 if (!$purge_unread) $query_limit = " unread = false AND ";
 180
 181                 if (DB_TYPE == "pgsql") {
 182                         $pg_version = get_pgsql_version($link);
 183
 184                         if (preg_match("/^7\./", $pg_version) || preg_match("/^8\.0/", $pg_version)) {
 185
 186                                 $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 187                                         ttrss_entries.id = ref_id AND
 188                                         marked = false AND
 189                                         feed_id = '$feed_id' AND
 190                                         $query_limit
 191                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 192
 193                         } else {
 194
 195                                 $result = db_query($link, "DELETE FROM ttrss_user_entries
 196                                         USING ttrss_entries
 197                                         WHERE ttrss_entries.id = ref_id AND
 198                                         marked = false AND
 199                                         feed_id = '$feed_id' AND
 200                                         $query_limit
 201                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 202                         }
 203
 204                         $rows = pg_affected_rows($result);
 205
 206                 } else {
 207
 208 /*                      $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 209                                 marked = false AND feed_id = '$feed_id' AND
 210                                 (SELECT date_updated FROM ttrss_entries WHERE
 211                                         id = ref_id) < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)"); */
 212
 213                         $result = db_query($link, "DELETE FROM ttrss_user_entries
 214                                 USING ttrss_user_entries, ttrss_entries
 215                                 WHERE ttrss_entries.id = ref_id AND
 216                                 marked = false AND
 217                                 feed_id = '$feed_id' AND
 218                                 $query_limit
 219                                 ttrss_entries.date_updated < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)");
 220
 221                         $rows = mysql_affected_rows($link);
 222
 223                 }
 224
 225                 ccache_update($link, $feed_id, $owner_uid);
 226
 227                 if ($debug) {
 228                         _debug("Purged feed $feed_id ($purge_interval): deleted $rows articles");
 229                 }
 230         } // function purge_feed
 231
 232         function feed_purge_interval($link, $feed_id) {
 233
 234                 $result = db_query($link, "SELECT purge_interval, owner_uid FROM ttrss_feeds
 235                         WHERE id = '$feed_id'");
 236
 237                 if (db_num_rows($result) == 1) {
 238                         $purge_interval = db_fetch_result($result, 0, "purge_interval");
 239                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 240
 241                         if ($purge_interval == 0) $purge_interval = get_pref($link,
 242                                 'PURGE_OLD_DAYS', $owner_uid);
 243
 244                         return $purge_interval;
 245
 246                 } else {
 247                         return -1;
 248                 }
 249         }
 250
 251         function purge_orphans($link, $do_output = false) {
 252
 253                 // purge orphaned posts in main content table
 254                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
 255                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
 256
 257                 if ($do_output) {
 258                         $rows = db_affected_rows($link, $result);
 259                         _debug("Purged $rows orphaned posts.");
 260                 }
 261         }
 262
 263         function get_feed_update_interval($link, $feed_id) {
 264                 $result = db_query($link, "SELECT owner_uid, update_interval FROM
 265                         ttrss_feeds WHERE id = '$feed_id'");
 266
 267                 if (db_num_rows($result) == 1) {
 268                         $update_interval = db_fetch_result($result, 0, "update_interval");
 269                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 270
 271                         if ($update_interval != 0) {
 272                                 return $update_interval;
 273                         } else {
 274                                 return get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $owner_uid, false);
 275                         }
 276
 277                 } else {
 278                         return -1;
 279                 }
 280         }
 281
 282         function fetch_file_contents($url, $type = false, $login = false, $pass = false, $post_query = false) {
 283                 $login = urlencode($login);
 284                 $pass = urlencode($pass);
 285
 286                 global $fetch_last_error;
 287
 288                 if (function_exists('curl_init') && !ini_get("open_basedir")) {
 289                         $ch = curl_init($url);
 290
 291                         curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 15);
 292                         curl_setopt($ch, CURLOPT_TIMEOUT, 45);
 293                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
 294                         curl_setopt($ch, CURLOPT_MAXREDIRS, 20);
 295                         curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
 296                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 297                         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 298                         curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 299                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 300                         curl_setopt($ch, CURLOPT_ENCODING , "gzip");
 301
 302                         if ($post_query) {
 303                                 curl_setopt($ch, CURLOPT_POST, true);
 304                                 curl_setopt($ch, CURLOPT_POSTFIELDS, $post_query);
 305                         }
 306
 307                         if ($login && $pass)
 308                                 curl_setopt($ch, CURLOPT_USERPWD, "$login:$pass");
 309
 310                         $contents = @curl_exec($ch);
 311
 312                         if ($contents === false) {
 313                                 $fetch_last_error = curl_error($ch);
 314                                 curl_close($ch);
 315                                 return false;
 316                         }
 317
 318                         $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 319                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 320                         curl_close($ch);
 321
 322                         if ($http_code != 200 || $type && strpos($content_type, "$type") === false) {
 323                                 return false;
 324                         }
 325
 326                         return $contents;
 327                 } else {
 328                         if ($login && $pass ){
 329                                 $url_parts = array();
 330
 331                                 preg_match("/(^[^:]*):\/\/(.*)/", $url, $url_parts);
 332
 333                                 if ($url_parts[1] && $url_parts[2]) {
 334                                         $url = $url_parts[1] . "://$login:$pass@" . $url_parts[2];
 335                                 }
 336                         }
 337
 338                         $data = @file_get_contents($url);
 339
 340                         if (!$data && function_exists('error_get_last')) {
 341                                 $error = error_get_last();
 342                                 $fetch_last_error = $error["message"];
 343                         }
 344                         return $data;
 345                 }
 346
 347         }
 348
 349         /**
 350          * Try to determine the favicon URL for a feed.
 351          * adapted from wordpress favicon plugin by Jeff Minard (http://thecodepro.com/)
 352          * http://dev.wp-plugins.org/file/favatars/trunk/favatars.php
 353          *
 354          * @param string $url A feed or page URL
 355          * @access public
 356          * @return mixed The favicon URL, or false if none was found.
 357          */
 358         function get_favicon_url($url) {
 359
 360                 $favicon_url = false;
 361
 362                 if ($html = @fetch_file_contents($url)) {
 363
 364                         libxml_use_internal_errors(true);
 365
 366                         $doc = new DOMDocument();
 367                         $doc->loadHTML($html);
 368                         $xpath = new DOMXPath($doc);
 369
 370                         $base = $xpath->query('/html/head/base');
 371                         foreach ($base as $b) {
 372                                 $url = $b->getAttribute("href");
 373                                 break;
 374                         }
 375
 376                         $entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon"]');
 377                         if (count($entries) > 0) {
 378                                 foreach ($entries as $entry) {
 379                                         $favicon_url = rewrite_relative_url($url, $entry->getAttribute("href"));
 380                                         break;
 381                                 }
 382                         }
 383                 }
 384
 385                 if (!$favicon_url)
 386                         $favicon_url = rewrite_relative_url($url, "/favicon.ico");
 387
 388                 return $favicon_url;
 389         } // function get_favicon_url
 390
 391         function check_feed_favicon($site_url, $feed, $link) {
 392 #               print "FAVICON [$site_url]: $favicon_url\n";
 393
 394                 $icon_file = ICONS_DIR . "/$feed.ico";
 395
 396                 if (!file_exists($icon_file)) {
 397                         $favicon_url = get_favicon_url($site_url);
 398
 399                         if ($favicon_url) {
 400                                 // Limiting to "image" type misses those served with text/plain
 401                                 $contents = fetch_file_contents($favicon_url); // , "image");
 402
 403                                 if ($contents) {
 404                                         // Crude image type matching.
 405                                         // Patterns gleaned from the file(1) source code.
 406                                         if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
 407                                                 // 0       string  \000\000\001\000        MS Windows icon resource
 408                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
 409                                         }
 410                                         elseif (preg_match('/^GIF8/', $contents)) {
 411                                                 // 0       string          GIF8            GIF image data
 412                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
 413                                         }
 414                                         elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
 415                                                 // 0       string          \x89PNG\x0d\x0a\x1a\x0a         PNG image data
 416                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
 417                                         }
 418                                         elseif (preg_match('/^\xff\xd8/', $contents)) {
 419                                                 // 0       beshort         0xffd8          JPEG image data
 420                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
 421                                         }
 422                                         else {
 423                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
 424                                                 $contents = "";
 425                                         }
 426                                 }
 427
 428                                 if ($contents) {
 429                                         $fp = @fopen($icon_file, "w");
 430
 431                                         if ($fp) {
 432                                                 fwrite($fp, $contents);
 433                                                 fclose($fp);
 434                                                 chmod($icon_file, 0644);
 435                                         }
 436                                 }
 437                         }
 438                 }
 439         }
 440
 441         function print_select($id, $default, $values, $attributes = "") {
 442                 print "<select name=\"$id\" id=\"$id\" $attributes>";
 443                 foreach ($values as $v) {
 444                         if ($v == $default)
 445                                 $sel = "selected=\"1\"";
 446                          else
 447                                 $sel = "";
 448
 449                         print "<option value=\"$v\" $sel>$v</option>";
 450                 }
 451                 print "</select>";
 452         }
 453
 454         function print_select_hash($id, $default, $values, $attributes = "") {
 455                 print "<select name=\"$id\" id='$id' $attributes>";
 456                 foreach (array_keys($values) as $v) {
 457                         if ($v == $default)
 458                                 $sel = 'selected="selected"';
 459                          else
 460                                 $sel = "";
 461
 462                         print "<option $sel value=\"$v\">".$values[$v]."</option>";
 463                 }
 464
 465                 print "</select>";
 466         }
 467
 468         function get_article_filters($filters, $title, $content, $link, $timestamp, $author, $tags) {
 469                 $matches = array();
 470
 471                 foreach ($filters as $filter) {
 472                         $match_any_rule = $filter["match_any_rule"];
 473                         $filter_match = false;
 474
 475                         foreach ($filter["rules"] as $rule) {
 476                                 $match = false;
 477                                 $reg_exp = $rule["reg_exp"];
 478
 479                                 if (!$reg_exp)
 480                                         continue;
 481
 482                                 switch ($rule["type"]) {
 483                                 case "title":
 484                                         $match = @preg_match("/$reg_exp/i", $title);
 485                                         break;
 486                                 case "content":
 487                                         $match = @preg_match("/$reg_exp/i", $content);
 488                                         break;
 489                                 case "both":
 490                                         $match = (@preg_match("/$reg_exp/i", $title) || @preg_match("/$reg_exp/i", $title));
 491                                         break;
 492                                 case "link":
 493                                         $match = @preg_match("/$reg_exp/i", $link);
 494                                         break;
 495                                 case "author":
 496                                         $match = @preg_match("/$reg_exp/i", $author);
 497                                         break;
 498                                 case "tag":
 499                                         $tag_string = join(",", $tags);
 500                                         $match = @preg_match("/$reg_exp/i", $tag_string);
 501                                         break;
 502                                 }
 503
 504                                 if ($match_any_rule) {
 505                                         if ($match) {
 506                                                 $filter_match = true;
 507                                                 break;
 508                                         }
 509                                 } else {
 510                                         $filter_match = $match;
 511                                         if (!$match) {
 512                                                 break;
 513                                         }
 514                                 }
 515                         }
 516
 517                         if ($filter_match) {
 518                                 foreach ($filter["actions"] AS $action) {
 519                                         array_push($matches, $action);
 520                                 }
 521                         }
 522                 }
 523
 524                 return $matches;
 525         }
 526
 527         function find_article_filter($filters, $filter_name) {
 528                 foreach ($filters as $f) {
 529                         if ($f["type"] == $filter_name) {
 530                                 return $f;
 531                         };
 532                 }
 533                 return false;
 534         }
 535
 536         function find_article_filters($filters, $filter_name) {
 537                 $results = array();
 538
 539                 foreach ($filters as $f) {
 540                         if ($f["type"] == $filter_name) {
 541                                 array_push($results, $f);
 542                         };
 543                 }
 544                 return $results;
 545         }
 546
 547         function calculate_article_score($filters) {
 548                 $score = 0;
 549
 550                 foreach ($filters as $f) {
 551                         if ($f["type"] == "score") {
 552                                 $score += $f["param"];
 553                         };
 554                 }
 555                 return $score;
 556         }
 557
 558         function assign_article_to_labels($link, $id, $filters, $owner_uid) {
 559                 foreach ($filters as $f) {
 560                         if ($f["type"] == "label") {
 561                                 label_add_article($link, $id, $f["param"], $owner_uid);
 562                         };
 563                 }
 564         }
 565
 566         function getmicrotime() {
 567                 list($usec, $sec) = explode(" ",microtime());
 568                 return ((float)$usec + (float)$sec);
 569         }
 570
 571         function print_radio($id, $default, $true_is, $values, $attributes = "") {
 572                 foreach ($values as $v) {
 573
 574                         if ($v == $default)
 575                                 $sel = "checked";
 576                          else
 577                                 $sel = "";
 578
 579                         if ($v == $true_is) {
 580                                 $sel .= " value=\"1\"";
 581                         } else {
 582                                 $sel .= " value=\"0\"";
 583                         }
 584
 585                         print "<input class=\"noborder\" dojoType=\"dijit.form.RadioButton\"
 586                                 type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 587
 588                 }
 589         }
 590
 591         function initialize_user_prefs($link, $uid, $profile = false) {
 592
 593                 $uid = db_escape_string($uid);
 594
 595                 if (!$profile) {
 596                         $profile = "NULL";
 597                         $profile_qpart = "AND profile IS NULL";
 598                 } else {
 599                         $profile_qpart = "AND profile = '$profile'";
 600                 }
 601
 602                 if (get_schema_version($link) < 63) $profile_qpart = "";
 603
 604                 db_query($link, "BEGIN");
 605
 606                 $result = db_query($link, "SELECT pref_name,def_value FROM ttrss_prefs");
 607
 608                 $u_result = db_query($link, "SELECT pref_name
 609                         FROM ttrss_user_prefs WHERE owner_uid = '$uid' $profile_qpart");
 610
 611                 $active_prefs = array();
 612
 613                 while ($line = db_fetch_assoc($u_result)) {
 614                         array_push($active_prefs, $line["pref_name"]);
 615                 }
 616
 617                 while ($line = db_fetch_assoc($result)) {
 618                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 619 //                              print "adding " . $line["pref_name"] . "<br>";
 620
 621                                 if (get_schema_version($link) < 63) {
 622                                         db_query($link, "INSERT INTO ttrss_user_prefs
 623                                                 (owner_uid,pref_name,value) VALUES
 624                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 625
 626                                 } else {
 627                                         db_query($link, "INSERT INTO ttrss_user_prefs
 628                                                 (owner_uid,pref_name,value, profile) VALUES
 629                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."', $profile)");
 630                                 }
 631
 632                         }
 633                 }
 634
 635                 db_query($link, "COMMIT");
 636
 637         }
 638
 639         function get_ssl_certificate_id() {
 640                 if ($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"]) {
 641                         return sha1($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"] .
 642                                 $_SERVER["REDIRECT_SSL_CLIENT_V_START"] .
 643                                 $_SERVER["REDIRECT_SSL_CLIENT_V_END"] .
 644                                 $_SERVER["REDIRECT_SSL_CLIENT_S_DN"]);
 645                 }
 646                 return "";
 647         }
 648
 649         function authenticate_user($link, $login, $password, $check_only = false) {
 650
 651                 if (!SINGLE_USER_MODE) {
 652
 653                         $user_id = false;
 654                         $modules = explode(",", AUTH_MODULES);
 655
 656                         foreach ($modules as $module) {
 657                                 $module_class = "auth_$module";
 658                                 if (class_exists($module_class)) {
 659                                         $authenticator = new $module_class($link);
 660
 661                                         $user_id = (int) $authenticator->authenticate($login, $password);
 662
 663                                         if ($user_id) {
 664                                                 $_SESSION["auth_module"] = $module;
 665                                                 break;
 666                                         }
 667
 668                                 } else {
 669                                         print T_sprintf("Fatal: authentication module %s not found.", $module);
 670                                         die;
 671                                 }
 672                         }
 673
 674                         if ($user_id && !$check_only) {
 675                                 $_SESSION["uid"] = $user_id;
 676
 677                                 $result = db_query($link, "SELECT login,access_level,pwd_hash FROM ttrss_users
 678                                         WHERE id = '$user_id'");
 679
 680                                 $_SESSION["name"] = db_fetch_result($result, 0, "login");
 681                                 $_SESSION["access_level"] = db_fetch_result($result, 0, "access_level");
 682                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 683
 684                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 685                                         $_SESSION["uid"]);
 686
 687                                 $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 688                                 $_SESSION["pwd_hash"] = db_fetch_result($result, 0, "pwd_hash");
 689
 690                                 $_SESSION["last_version_check"] = time();
 691
 692                                 initialize_user_prefs($link, $_SESSION["uid"]);
 693
 694                                 return true;
 695                         }
 696
 697                         return false;
 698
 699                 } else {
 700
 701                         $_SESSION["uid"] = 1;
 702                         $_SESSION["name"] = "admin";
 703                         $_SESSION["access_level"] = 10;
 704
 705                         $_SESSION["hide_hello"] = true;
 706                         $_SESSION["hide_logout"] = true;
 707
 708                         $_SESSION["auth_module"] = false;
 709
 710                         if (!$_SESSION["csrf_token"]) {
 711                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 712                         }
 713
 714                         $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 715
 716                         initialize_user_prefs($link, $_SESSION["uid"]);
 717
 718                         return true;
 719                 }
 720         }
 721
 722         function make_password($length = 8) {
 723
 724                 $password = "";
 725                 $possible = "0123456789abcdfghjkmnpqrstvwxyzABCDFGHJKMNPQRSTVWXYZ";
 726
 727         $i = 0;
 728
 729                 while ($i < $length) {
 730                         $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 731
 732                         if (!strstr($password, $char)) {
 733                                 $password .= $char;
 734                                 $i++;
 735                         }
 736                 }
 737                 return $password;
 738         }
 739
 740         // this is called after user is created to initialize default feeds, labels
 741         // or whatever else
 742
 743         // user preferences are checked on every login, not here
 744
 745         function initialize_user($link, $uid) {
 746
 747                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 748                         values ('$uid', 'Tiny Tiny RSS: New Releases',
 749                         'http://tt-rss.org/releases.rss')");
 750
 751                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 752                         values ('$uid', 'Tiny Tiny RSS: Forum',
 753                                 'http://tt-rss.org/forum/rss.php')");
 754         }
 755
 756         function logout_user() {
 757                 session_destroy();
 758                 if (isset($_COOKIE[session_name()])) {
 759                    setcookie(session_name(), '', time()-42000, '/');
 760                 }
 761         }
 762
 763         function validate_csrf($csrf_token) {
 764                 return $csrf_token == $_SESSION['csrf_token'];
 765         }
 766
 767         function validate_session($link) {
 768                 if (SINGLE_USER_MODE) return true;
 769
 770                 $check_ip = $_SESSION['ip_address'];
 771
 772                 switch (SESSION_CHECK_ADDRESS) {
 773                 case 0:
 774                         $check_ip = '';
 775                         break;
 776                 case 1:
 777                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 778                         break;
 779                 case 2:
 780                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.'));
 781                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 782                         break;
 783                 };
 784
 785                 if ($check_ip && strpos($_SERVER['REMOTE_ADDR'], $check_ip) !== 0) {
 786                         $_SESSION["login_error_msg"] =
 787                                 __("Session failed to validate (incorrect IP)");
 788                         return false;
 789                 }
 790
 791                 if ($_SESSION["ref_schema_version"] != get_schema_version($link, true))
 792                         return false;
 793
 794                 if ($_SESSION["uid"]) {
 795
 796                         $result = db_query($link,
 797                                 "SELECT pwd_hash FROM ttrss_users WHERE id = '".$_SESSION["uid"]."'");
 798
 799                         $pwd_hash = db_fetch_result($result, 0, "pwd_hash");
 800
 801                         if ($pwd_hash != $_SESSION["pwd_hash"]) {
 802                                 return false;
 803                         }
 804                 }
 805
 806 /*              if ($_SESSION["cookie_lifetime"] && $_SESSION["uid"]) {
 807
 808                         //print_r($_SESSION);
 809
 810                         if (time() > $_SESSION["cookie_lifetime"]) {
 811                                 return false;
 812                         }
 813                 } */
 814
 815                 return true;
 816         }
 817
 818         function login_sequence($link, $mobile = false) {
 819                 $_SESSION["prefs_cache"] = array();
 820
 821                 if (!SINGLE_USER_MODE) {
 822
 823                         $login_action = $_POST["login_action"];
 824
 825                         # try to authenticate user if called from login form
 826                         if ($login_action == "do_login") {
 827                                 $login = db_escape_string($_POST["login"]);
 828                                 $password = $_POST["password"];
 829                                 $remember_me = $_POST["remember_me"];
 830
 831                                 if (authenticate_user($link, $login, $password)) {
 832                                         $_POST["password"] = "";
 833
 834                                         $_SESSION["language"] = $_POST["language"];
 835                                         $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 836                                         $_SESSION["bw_limit"] = !!$_POST["bw_limit"];
 837
 838                                         if ($_POST["profile"]) {
 839
 840                                                 $profile = db_escape_string($_POST["profile"]);
 841
 842                                                 $result = db_query($link, "SELECT id FROM ttrss_settings_profiles
 843                                                         WHERE id = '$profile' AND owner_uid = " . $_SESSION["uid"]);
 844
 845                                                 if (db_num_rows($result) != 0) {
 846                                                         $_SESSION["profile"] = $profile;
 847                                                         $_SESSION["prefs_cache"] = array();
 848                                                 }
 849                                         }
 850
 851                                         if ($_REQUEST['return']) {
 852                                                 header("Location: " . $_REQUEST['return']);
 853                                         } else {
 854                                                 header("Location: " . $_SERVER["REQUEST_URI"]);
 855                                         }
 856
 857                                         exit;
 858
 859                                         return;
 860                                 } else {
 861                                         $_SESSION["login_error_msg"] = __("Incorrect username or password");
 862                                 }
 863                         }
 864
 865                         if (!$_SESSION["uid"] || !validate_session($link)) {
 866
 867                                 if (AUTH_AUTO_LOGIN && authenticate_user($link, null, null)) {
 868                                     $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 869                                 } else {
 870                                          authenticate_user($link, null, null, true);
 871                                     render_login_form($link, $mobile);
 872                                     exit;
 873                                 }
 874                         } else {
 875                                 /* bump login timestamp */
 876                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 877                                         $_SESSION["uid"]);
 878
 879                                 if ($_SESSION["language"] && SESSION_COOKIE_LIFETIME > 0) {
 880                                         setcookie("ttrss_lang", $_SESSION["language"],
 881                                                 time() + SESSION_COOKIE_LIFETIME);
 882                                 }
 883
 884                                 // try to remove possible duplicates from feed counter cache
 885 //                              ccache_cleanup($link, $_SESSION["uid"]);
 886                         }
 887
 888                 } else {
 889                         return authenticate_user($link, "admin", null);
 890                 }
 891         }
 892
 893         function truncate_string($str, $max_len, $suffix = '&hellip;') {
 894                 if (mb_strlen($str, "utf-8") > $max_len - 3) {
 895                         return mb_substr($str, 0, $max_len, "utf-8") . $suffix;
 896                 } else {
 897                         return $str;
 898                 }
 899         }
 900
 901         function theme_image($link, $filename) {
 902                 if ($link) {
 903                         $theme_path = get_user_theme_path($link);
 904
 905                         if ($theme_path && is_file($theme_path.$filename)) {
 906                                 return $theme_path.$filename;
 907                         } else {
 908                                 return $filename;
 909                         }
 910                 } else {
 911                         return $filename;
 912                 }
 913         }
 914
 915         function get_user_theme($link) {
 916
 917                 if (get_schema_version($link) >= 63 && $_SESSION["uid"]) {
 918                         $theme_name = get_pref($link, "_THEME_ID");
 919                         if (is_dir("themes/$theme_name")) {
 920                                 return $theme_name;
 921                         } else {
 922                                 return '';
 923                         }
 924                 } else {
 925                         return '';
 926                 }
 927
 928         }
 929
 930         function get_user_theme_path($link) {
 931                 $theme_path = '';
 932
 933                 if (get_schema_version($link) >= 63 && $_SESSION["uid"]) {
 934                         $theme_name = get_pref($link, "_THEME_ID");
 935
 936                         if ($theme_name && is_dir("themes/$theme_name")) {
 937                                 $theme_path = "themes/$theme_name/";
 938                         } else {
 939                                 $theme_name = '';
 940                         }
 941                 } else {
 942                         $theme_path = '';
 943                 }
 944
 945                 if ($theme_path) {
 946                         if (is_file("$theme_path/theme.ini")) {
 947                                 $ini = parse_ini_file("$theme_path/theme.ini", true);
 948                                 if ($ini['theme']['version'] >= THEME_VERSION_REQUIRED) {
 949                                         return $theme_path;
 950                                 }
 951                         }
 952                 }
 953                 return '';
 954         }
 955
 956         function get_user_theme_options($link) {
 957                 $t = get_user_theme_path($link);
 958
 959                 if ($t) {
 960                         if (is_file("$t/theme.ini")) {
 961                                 $ini = parse_ini_file("$t/theme.ini", true);
 962                                 if ($ini['theme']['version']) {
 963                                         return $ini['theme']['options'];
 964                                 }
 965                         }
 966                 }
 967                 return '';
 968         }
 969
 970         function print_theme_includes($link) {
 971
 972                 $t = get_user_theme_path($link);
 973                 $time = time();
 974
 975                 if ($t) {
 976                         print "<link rel=\"stylesheet\" type=\"text/css\"
 977                                 href=\"$t/theme.css?$time \">";
 978                         if (file_exists("$t/theme.js")) {
 979                                 print "<script type=\"text/javascript\" src=\"$t/theme.js?$time\">
 980                                         </script>";
 981                         }
 982                 }
 983         }
 984
 985         function get_all_themes() {
 986                 $themes = glob("themes/*");
 987
 988                 asort($themes);
 989
 990                 $rv = array();
 991
 992                 foreach ($themes as $t) {
 993                         if (is_file("$t/theme.ini")) {
 994                                 $ini = parse_ini_file("$t/theme.ini", true);
 995                                 if ($ini['theme']['version'] >= THEME_VERSION_REQUIRED &&
 996                                                         !$ini['theme']['disabled']) {
 997                                         $entry = array();
 998                                         $entry["path"] = $t;
 999                                         $entry["base"] = basename($t);
1000                                         $entry["name"] = $ini['theme']['name'];
1001                                         $entry["version"] = $ini['theme']['version'];
1002                                         $entry["author"] = $ini['theme']['author'];
1003                                         $entry["options"] = $ini['theme']['options'];
1004                                         array_push($rv, $entry);
1005                                 }
1006                         }
1007                 }
1008
1009                 return $rv;
1010         }
1011
1012         function convert_timestamp($timestamp, $source_tz, $dest_tz) {
1013
1014                 try {
1015                         $source_tz = new DateTimeZone($source_tz);
1016                 } catch (Exception $e) {
1017                         $source_tz = new DateTimeZone('UTC');
1018                 }
1019
1020                 try {
1021                         $dest_tz = new DateTimeZone($dest_tz);
1022                 } catch (Exception $e) {
1023                         $dest_tz = new DateTimeZone('UTC');
1024                 }
1025
1026                 $dt = new DateTime(date('Y-m-d H:i:s', $timestamp), $source_tz);
1027                 return $dt->format('U') + $dest_tz->getOffset($dt);
1028         }
1029
1030         function make_local_datetime($link, $timestamp, $long, $owner_uid = false,
1031                                         $no_smart_dt = false) {
1032
1033                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
1034                 if (!$timestamp) $timestamp = '1970-01-01 0:00';
1035
1036                 global $utc_tz;
1037                 global $tz_offset;
1038
1039                 # We store date in UTC internally
1040                 $dt = new DateTime($timestamp, $utc_tz);
1041
1042                 if ($tz_offset == -1) {
1043
1044                         $user_tz_string = get_pref($link, 'USER_TIMEZONE', $owner_uid);
1045
1046                         try {
1047                                 $user_tz = new DateTimeZone($user_tz_string);
1048                         } catch (Exception $e) {
1049                                 $user_tz = $utc_tz;
1050                         }
1051
1052                         $tz_offset = $user_tz->getOffset($dt);
1053                 }
1054
1055                 $user_timestamp = $dt->format('U') + $tz_offset;
1056
1057                 if (!$no_smart_dt) {
1058                         return smart_date_time($link, $user_timestamp,
1059                                 $tz_offset, $owner_uid);
1060                 } else {
1061                         if ($long)
1062                                 $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
1063                         else
1064                                 $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
1065
1066                         return date($format, $user_timestamp);
1067                 }
1068         }
1069
1070         function smart_date_time($link, $timestamp, $tz_offset = 0, $owner_uid = false) {
1071                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
1072
1073                 if (date("Y.m.d", $timestamp) == date("Y.m.d", time() + $tz_offset)) {
1074                         return date("G:i", $timestamp);
1075                 } else if (date("Y", $timestamp) == date("Y", time() + $tz_offset)) {
1076                         $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
1077                         return date($format, $timestamp);
1078                 } else {
1079                         $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
1080                         return date($format, $timestamp);
1081                 }
1082         }
1083
1084         function sql_bool_to_bool($s) {
1085                 if ($s == "t" || $s == "1" || $s == "true") {
1086                         return true;
1087                 } else {
1088                         return false;
1089                 }
1090         }
1091
1092         function bool_to_sql_bool($s) {
1093                 if ($s) {
1094                         return "true";
1095                 } else {
1096                         return "false";
1097                 }
1098         }
1099
1100         // Session caching removed due to causing wrong redirects to upgrade
1101         // script when get_schema_version() is called on an obsolete session
1102         // created on a previous schema version.
1103         function get_schema_version($link, $nocache = false) {
1104                 global $schema_version;
1105
1106                 if (!$schema_version) {
1107                         $result = db_query($link, "SELECT schema_version FROM ttrss_version");
1108                         $version = db_fetch_result($result, 0, "schema_version");
1109                         $schema_version = $version;
1110                         return $version;
1111                 } else {
1112                         return $schema_version;
1113                 }
1114         }
1115
1116         function sanity_check($link) {
1117                 require_once 'errors.php';
1118
1119                 $error_code = 0;
1120                 $schema_version = get_schema_version($link, true);
1121
1122                 if ($schema_version != SCHEMA_VERSION) {
1123                         $error_code = 5;
1124                 }
1125
1126                 if (DB_TYPE == "mysql") {
1127                         $result = db_query($link, "SELECT true", false);
1128                         if (db_num_rows($result) != 1) {
1129                                 $error_code = 10;
1130                         }
1131                 }
1132
1133                 if (db_escape_string("testTEST") != "testTEST") {
1134                         $error_code = 12;
1135                 }
1136
1137                 return array("code" => $error_code, "message" => $ERRORS[$error_code]);
1138         }
1139
1140         function file_is_locked($filename) {
1141                 if (function_exists('flock')) {
1142                         $fp = @fopen(LOCK_DIRECTORY . "/$filename", "r");
1143                         if ($fp) {
1144                                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1145                                         flock($fp, LOCK_UN);
1146                                         fclose($fp);
1147                                         return false;
1148                                 }
1149                                 fclose($fp);
1150                                 return true;
1151                         } else {
1152                                 return false;
1153                         }
1154                 }
1155                 return true; // consider the file always locked and skip the test
1156         }
1157
1158         function make_lockfile($filename) {
1159                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
1160
1161                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1162                         if (function_exists('posix_getpid')) {
1163                                 fwrite($fp, posix_getpid() . "\n");
1164                         }
1165                         return $fp;
1166                 } else {
1167                         return false;
1168                 }
1169         }
1170
1171         function make_stampfile($filename) {
1172                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
1173
1174                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1175                         fwrite($fp, time() . "\n");
1176                         flock($fp, LOCK_UN);
1177                         fclose($fp);
1178                         return true;
1179                 } else {
1180                         return false;
1181                 }
1182         }
1183
1184         function sql_random_function() {
1185                 if (DB_TYPE == "mysql") {
1186                         return "RAND()";
1187                 } else {
1188                         return "RANDOM()";
1189                 }
1190         }
1191
1192         function catchup_feed($link, $feed, $cat_view, $owner_uid = false, $max_id = false) {
1193
1194                         if (!$owner_uid) $owner_uid = $_SESSION['uid'];
1195
1196                         //if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
1197
1198                         $ref_check_qpart = ($max_id &&
1199                                 !get_pref($link, 'REVERSE_HEADLINES')) ? "ref_id <= '$max_id'" : "true";
1200
1201                         if (is_numeric($feed)) {
1202                                 if ($cat_view) {
1203
1204                                         if ($feed >= 0) {
1205
1206                                                 if ($feed > 0) {
1207                                                         $cat_qpart = "cat_id = '$feed'";
1208                                                 } else {
1209                                                         $cat_qpart = "cat_id IS NULL";
1210                                                 }
1211
1212                                                 $tmp_result = db_query($link, "SELECT id
1213                                                         FROM ttrss_feeds WHERE $cat_qpart AND owner_uid = $owner_uid");
1214
1215                                                 while ($tmp_line = db_fetch_assoc($tmp_result)) {
1216
1217                                                         $tmp_feed = $tmp_line["id"];
1218
1219                                                         db_query($link, "UPDATE ttrss_user_entries
1220                                                                 SET unread = false,last_read = NOW()
1221                                                                 WHERE feed_id = '$tmp_feed'
1222                                                                 AND $ref_check_qpart
1223                                                                 AND owner_uid = $owner_uid");
1224                                                 }
1225                                         } else if ($feed == -2) {
1226
1227                                                 db_query($link, "UPDATE ttrss_user_entries
1228                                                         SET unread = false,last_read = NOW() WHERE (SELECT COUNT(*)
1229                                                                 FROM ttrss_user_labels2 WHERE article_id = ref_id) > 0
1230                                                                 AND $ref_check_qpart
1231                                                                 AND unread = true AND owner_uid = $owner_uid");
1232                                         }
1233
1234                                 } else if ($feed > 0) {
1235
1236                                         db_query($link, "UPDATE ttrss_user_entries
1237                                                         SET unread = false,last_read = NOW()
1238                                                         WHERE feed_id = '$feed'
1239                                                         AND $ref_check_qpart
1240                                                         AND owner_uid = $owner_uid");
1241
1242                                 } else if ($feed < 0 && $feed > -10) { // special, like starred
1243
1244                                         if ($feed == -1) {
1245                                                 db_query($link, "UPDATE ttrss_user_entries
1246                                                         SET unread = false,last_read = NOW()
1247                                                         WHERE marked = true
1248                                                         AND $ref_check_qpart
1249                                                         AND owner_uid = $owner_uid");
1250                                         }
1251
1252                                         if ($feed == -2) {
1253                                                 db_query($link, "UPDATE ttrss_user_entries
1254                                                         SET unread = false,last_read = NOW()
1255                                                         WHERE published = true
1256                                                         AND $ref_check_qpart
1257                                                         AND owner_uid = $owner_uid");
1258                                         }
1259
1260                                         if ($feed == -3) {
1261
1262                                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE");
1263
1264                                                 if (DB_TYPE == "pgsql") {
1265                                                         $match_part = "updated > NOW() - INTERVAL '$intl hour' ";
1266                                                 } else {
1267                                                         $match_part = "updated > DATE_SUB(NOW(),
1268                                                                 INTERVAL $intl HOUR) ";
1269                                                 }
1270
1271                                                 $result = db_query($link, "SELECT id FROM ttrss_entries,
1272                                                         ttrss_user_entries WHERE $match_part AND
1273                                                         unread = true AND
1274                                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
1275                                                         owner_uid = $owner_uid");
1276
1277                                                 $affected_ids = array();
1278
1279                                                 while ($line = db_fetch_assoc($result)) {
1280                                                         array_push($affected_ids, $line["id"]);
1281                                                 }
1282
1283                                                 catchupArticlesById($link, $affected_ids, 0);
1284                                         }
1285
1286                                         if ($feed == -4) {
1287                                                 db_query($link, "UPDATE ttrss_user_entries
1288                                                         SET unread = false,last_read = NOW()
1289                                                         WHERE $ref_check_qpart AND owner_uid = $owner_uid");
1290                                         }
1291
1292                                 } else if ($feed < -10) { // label
1293
1294                                         $label_id = -$feed - 11;
1295
1296                                         db_query($link, "UPDATE ttrss_user_entries, ttrss_user_labels2
1297                                                 SET unread = false, last_read = NOW()
1298                                                         WHERE label_id = '$label_id' AND unread = true
1299                                                         AND $ref_check_qpart
1300                                                         AND owner_uid = '$owner_uid' AND ref_id = article_id");
1301
1302                                 }
1303
1304                                 ccache_update($link, $feed, $owner_uid, $cat_view);
1305
1306                         } else { // tag
1307                                 db_query($link, "BEGIN");
1308
1309                                 $tag_name = db_escape_string($feed);
1310
1311                                 $result = db_query($link, "SELECT post_int_id FROM ttrss_tags
1312                                         WHERE tag_name = '$tag_name' AND owner_uid = $owner_uid");
1313
1314                                 while ($line = db_fetch_assoc($result)) {
1315                                         db_query($link, "UPDATE ttrss_user_entries SET
1316                                                 unread = false, last_read = NOW()
1317                                                 WHERE $ref_check_qpart AND int_id = " . $line["post_int_id"]);
1318                                 }
1319                                 db_query($link, "COMMIT");
1320                         }
1321         }
1322
1323         function getAllCounters($link, $omode = "flc", $active_feed = false) {
1324
1325                 if (!$omode) $omode = "flc";
1326
1327                 $data = getGlobalCounters($link);
1328
1329                 $data = array_merge($data, getVirtCounters($link));
1330
1331                 if (strchr($omode, "l")) $data = array_merge($data, getLabelCounters($link));
1332                 if (strchr($omode, "f")) $data = array_merge($data, getFeedCounters($link, $active_feed));
1333                 if (strchr($omode, "t")) $data = array_merge($data, getTagCounters($link));
1334                 if (strchr($omode, "c")) $data = array_merge($data, getCategoryCounters($link));
1335
1336                 return $data;
1337         }
1338
1339         function getCategoryTitle($link, $cat_id) {
1340
1341                 if ($cat_id == -1) {
1342                         return __("Special");
1343                 } else if ($cat_id == -2) {
1344                         return __("Labels");
1345                 } else {
1346
1347                         $result = db_query($link, "SELECT title FROM ttrss_feed_categories WHERE
1348                                 id = '$cat_id'");
1349
1350                         if (db_num_rows($result) == 1) {
1351                                 return db_fetch_result($result, 0, "title");
1352                         } else {
1353                                 return "Uncategorized";
1354                         }
1355                 }
1356         }
1357
1358
1359         function getCategoryCounters($link) {
1360                 $ret_arr = array();
1361
1362                 /* Labels category */
1363
1364                 $cv = array("id" => -2, "kind" => "cat",
1365                         "counter" => getCategoryUnread($link, -2));
1366
1367                 array_push($ret_arr, $cv);
1368
1369                 $result = db_query($link, "SELECT id AS cat_id, value AS unread,
1370                         (SELECT COUNT(id) FROM ttrss_feed_categories AS c2
1371                                 WHERE c2.parent_cat = ttrss_feed_categories.id) AS num_children
1372                         FROM ttrss_feed_categories, ttrss_cat_counters_cache
1373                         WHERE ttrss_cat_counters_cache.feed_id = id AND
1374                         ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid AND
1375                         ttrss_feed_categories.owner_uid = " . $_SESSION["uid"]);
1376
1377                 while ($line = db_fetch_assoc($result)) {
1378                         $line["cat_id"] = (int) $line["cat_id"];
1379
1380                         if ($line["num_children"] > 0) {
1381                                 $child_counter = getCategoryChildrenUnread($link, $line["cat_id"], $_SESSION["uid"]);
1382                         } else {
1383                                 $child_counter = 0;
1384                         }
1385
1386                         $cv = array("id" => $line["cat_id"], "kind" => "cat",
1387                                 "child_counter" => $child_counter,
1388                                 "counter" => $line["unread"]);
1389
1390                         array_push($ret_arr, $cv);
1391                 }
1392
1393                 /* Special case: NULL category doesn't actually exist in the DB */
1394
1395                 $cv = array("id" => 0, "kind" => "cat",
1396                         "counter" => ccache_find($link, 0, $_SESSION["uid"], true));
1397
1398                 array_push($ret_arr, $cv);
1399
1400                 return $ret_arr;
1401         }
1402
1403         // only accepts real cats (>= 0)
1404         function getCategoryChildrenUnread($link, $cat, $owner_uid = false) {
1405                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1406
1407                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories WHERE parent_cat = '$cat'
1408                                 AND owner_uid = $owner_uid");
1409
1410                 $unread = 0;
1411
1412                 while ($line = db_fetch_assoc($result)) {
1413                         $unread += getCategoryUnread($link, $line["id"], $owner_uid);
1414                         $unread += getCategoryChildrenUnread($link, $line["id"], $owner_uid);
1415                 }
1416
1417                 return $unread;
1418         }
1419
1420         function getCategoryUnread($link, $cat, $owner_uid = false) {
1421
1422                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1423
1424                 if ($cat >= 0) {
1425
1426                         if ($cat != 0) {
1427                                 $cat_query = "cat_id = '$cat'";
1428                         } else {
1429                                 $cat_query = "cat_id IS NULL";
1430                         }
1431
1432                         $result = db_query($link, "SELECT id FROM ttrss_feeds WHERE $cat_query
1433                                         AND owner_uid = " . $owner_uid);
1434
1435                         $cat_feeds = array();
1436                         while ($line = db_fetch_assoc($result)) {
1437                                 array_push($cat_feeds, "feed_id = " . $line["id"]);
1438                         }
1439
1440                         if (count($cat_feeds) == 0) return 0;
1441
1442                         $match_part = implode(" OR ", $cat_feeds);
1443
1444                         $result = db_query($link, "SELECT COUNT(int_id) AS unread
1445                                 FROM ttrss_user_entries
1446                                 WHERE   unread = true AND ($match_part)
1447                                 AND owner_uid = " . $owner_uid);
1448
1449                         $unread = 0;
1450
1451                         # this needs to be rewritten
1452                         while ($line = db_fetch_assoc($result)) {
1453                                 $unread += $line["unread"];
1454                         }
1455
1456                         return $unread;
1457                 } else if ($cat == -1) {
1458                         return getFeedUnread($link, -1) + getFeedUnread($link, -2) + getFeedUnread($link, -3) + getFeedUnread($link, 0);
1459                 } else if ($cat == -2) {
1460
1461                         $result = db_query($link, "
1462                                 SELECT COUNT(unread) AS unread FROM
1463                                         ttrss_user_entries, ttrss_user_labels2
1464                                 WHERE article_id = ref_id AND unread = true
1465                                         AND ttrss_user_entries.owner_uid = '$owner_uid'");
1466
1467                         $unread = db_fetch_result($result, 0, "unread");
1468
1469                         return $unread;
1470
1471                 }
1472         }
1473
1474         function getFeedUnread($link, $feed, $is_cat = false) {
1475                 return getFeedArticles($link, $feed, $is_cat, true, $_SESSION["uid"]);
1476         }
1477
1478         function getLabelUnread($link, $label_id, $owner_uid = false) {
1479                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1480
1481                 $result = db_query($link, "SELECT COUNT(ref_id) AS unread FROM ttrss_user_entries, ttrss_user_labels2
1482                         WHERE owner_uid = '$owner_uid' AND unread = true AND label_id = '$label_id' AND article_id = ref_id");
1483
1484                 if (db_num_rows($result) != 0) {
1485                         return db_fetch_result($result, 0, "unread");
1486                 } else {
1487                         return 0;
1488                 }
1489         }
1490
1491         function getFeedArticles($link, $feed, $is_cat = false, $unread_only = false,
1492                 $owner_uid = false) {
1493
1494                 $n_feed = (int) $feed;
1495                 $need_entries = false;
1496
1497                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1498
1499                 if ($unread_only) {
1500                         $unread_qpart = "unread = true";
1501                 } else {
1502                         $unread_qpart = "true";
1503                 }
1504
1505                 if ($is_cat) {
1506                         return getCategoryUnread($link, $n_feed, $owner_uid);
1507                 } else if ($n_feed == -6) {
1508                         return 0;
1509                 } else if ($feed != "0" && $n_feed == 0) {
1510
1511                         $feed = db_escape_string($feed);
1512
1513                         $result = db_query($link, "SELECT SUM((SELECT COUNT(int_id)
1514                                 FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1515                                         AND ref_id = id AND $unread_qpart)) AS count FROM ttrss_tags
1516                                 WHERE owner_uid = $owner_uid AND tag_name = '$feed'");
1517                         return db_fetch_result($result, 0, "count");
1518
1519                 } else if ($n_feed == -1) {
1520                         $match_part = "marked = true";
1521                 } else if ($n_feed == -2) {
1522                         $match_part = "published = true";
1523                 } else if ($n_feed == -3) {
1524                         $match_part = "unread = true AND score >= 0";
1525
1526                         $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
1527
1528                         if (DB_TYPE == "pgsql") {
1529                                 $match_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
1530                         } else {
1531                                 $match_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
1532                         }
1533
1534                         $need_entries = true;
1535
1536                 } else if ($n_feed == -4) {
1537                         $match_part = "true";
1538                 } else if ($n_feed >= 0) {
1539
1540                         if ($n_feed != 0) {
1541                                 $match_part = "feed_id = '$n_feed'";
1542                         } else {
1543                                 $match_part = "feed_id IS NULL";
1544                         }
1545
1546                 } else if ($feed < -10) {
1547
1548                         $label_id = -$feed - 11;
1549
1550                         return getLabelUnread($link, $label_id, $owner_uid);
1551
1552                 }
1553
1554                 if ($match_part) {
1555
1556                         if ($need_entries) {
1557                                 $from_qpart = "ttrss_user_entries,ttrss_entries";
1558                                 $from_where = "ttrss_entries.id = ttrss_user_entries.ref_id AND";
1559                         } else {
1560                                 $from_qpart = "ttrss_user_entries";
1561                         }
1562
1563                         $query = "SELECT count(int_id) AS unread
1564                                 FROM $from_qpart WHERE
1565                                 $unread_qpart AND $from_where ($match_part) AND ttrss_user_entries.owner_uid = $owner_uid";
1566
1567                         //echo "[$feed/$query]\n";
1568
1569                         $result = db_query($link, $query);
1570
1571                 } else {
1572
1573                         $result = db_query($link, "SELECT COUNT(post_int_id) AS unread
1574                                 FROM ttrss_tags,ttrss_user_entries,ttrss_entries
1575                                 WHERE tag_name = '$feed' AND post_int_id = int_id AND ref_id = ttrss_entries.id
1576                                 AND $unread_qpart AND ttrss_tags.owner_uid = " . $owner_uid);
1577                 }
1578
1579                 $unread = db_fetch_result($result, 0, "unread");
1580
1581                 return $unread;
1582         }
1583
1584         function getGlobalUnread($link, $user_id = false) {
1585
1586                 if (!$user_id) {
1587                         $user_id = $_SESSION["uid"];
1588                 }
1589
1590                 $result = db_query($link, "SELECT SUM(value) AS c_id FROM ttrss_counters_cache
1591                         WHERE owner_uid = '$user_id' AND feed_id > 0");
1592
1593                 $c_id = db_fetch_result($result, 0, "c_id");
1594
1595                 return $c_id;
1596         }
1597
1598         function getGlobalCounters($link, $global_unread = -1) {
1599                 $ret_arr = array();
1600
1601                 if ($global_unread == -1) {
1602                         $global_unread = getGlobalUnread($link);
1603                 }
1604
1605                 $cv = array("id" => "global-unread",
1606                         "counter" => $global_unread);
1607
1608                 array_push($ret_arr, $cv);
1609
1610                 $result = db_query($link, "SELECT COUNT(id) AS fn FROM
1611                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1612
1613                 $subscribed_feeds = db_fetch_result($result, 0, "fn");
1614
1615                 $cv = array("id" => "subscribed-feeds",
1616                         "counter" => $subscribed_feeds);
1617
1618                 array_push($ret_arr, $cv);
1619
1620                 return $ret_arr;
1621         }
1622
1623         function getTagCounters($link) {
1624
1625                 $ret_arr = array();
1626
1627                 $result = db_query($link, "SELECT tag_name,SUM((SELECT COUNT(int_id)
1628                         FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1629                                 AND ref_id = id AND unread = true)) AS count FROM ttrss_tags
1630                                 WHERE owner_uid = ".$_SESSION['uid']." GROUP BY tag_name
1631                                 ORDER BY count DESC LIMIT 55");
1632
1633                 $tags = array();
1634
1635                 while ($line = db_fetch_assoc($result)) {
1636                         $tags[$line["tag_name"]] += $line["count"];
1637                 }
1638
1639                 foreach (array_keys($tags) as $tag) {
1640                         $unread = $tags[$tag];
1641                         $tag = htmlspecialchars($tag);
1642
1643                         $cv = array("id" => $tag,
1644                                 "kind" => "tag",
1645                                 "counter" => $unread);
1646
1647                         array_push($ret_arr, $cv);
1648                 }
1649
1650                 return $ret_arr;
1651         }
1652
1653         function getVirtCounters($link) {
1654
1655                 $ret_arr = array();
1656
1657                 for ($i = 0; $i >= -4; $i--) {
1658
1659                         $count = getFeedUnread($link, $i);
1660
1661                         $cv = array("id" => $i,
1662                                 "counter" => $count);
1663
1664 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1665 //                              $cv["xmsg"] = getFeedArticles($link, $i)." ".__("total");
1666
1667                         array_push($ret_arr, $cv);
1668                 }
1669
1670                 return $ret_arr;
1671         }
1672
1673         function getLabelCounters($link, $descriptions = false) {
1674
1675                 $ret_arr = array();
1676
1677                 $owner_uid = $_SESSION["uid"];
1678
1679                 $result = db_query($link, "SELECT id, caption FROM ttrss_labels2
1680                         WHERE owner_uid = '$owner_uid'");
1681
1682                 while ($line = db_fetch_assoc($result)) {
1683
1684                         $id = -$line["id"] - 11;
1685
1686                         $label_name = $line["caption"];
1687                         $count = getFeedUnread($link, $id);
1688
1689                         $cv = array("id" => $id,
1690                                 "counter" => $count);
1691
1692                         if ($descriptions)
1693                                 $cv["description"] = $label_name;
1694
1695 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1696 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1697
1698                         array_push($ret_arr, $cv);
1699                 }
1700
1701                 return $ret_arr;
1702         }
1703
1704         function getFeedCounters($link, $active_feed = false) {
1705
1706                 $ret_arr = array();
1707
1708                 $query = "SELECT ttrss_feeds.id,
1709                                 ttrss_feeds.title,
1710                                 ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
1711                                 last_error, value AS count
1712                         FROM ttrss_feeds, ttrss_counters_cache
1713                         WHERE ttrss_feeds.owner_uid = ".$_SESSION["uid"]."
1714                                 AND ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid
1715                                 AND ttrss_counters_cache.feed_id = id";
1716
1717                 $result = db_query($link, $query);
1718                 $fctrs_modified = false;
1719
1720                 while ($line = db_fetch_assoc($result)) {
1721
1722                         $id = $line["id"];
1723                         $count = $line["count"];
1724                         $last_error = htmlspecialchars($line["last_error"]);
1725
1726                         $last_updated = make_local_datetime($link, $line['last_updated'], false);
1727
1728                         $has_img = feed_has_icon($id);
1729
1730                         if (date('Y') - date('Y', strtotime($line['last_updated'])) > 2)
1731                                 $last_updated = '';
1732
1733                         $cv = array("id" => $id,
1734                                 "updated" => $last_updated,
1735                                 "counter" => $count,
1736                                 "has_img" => (int) $has_img);
1737
1738                         if ($last_error)
1739                                 $cv["error"] = $last_error;
1740
1741 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1742 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1743
1744                         if ($active_feed && $id == $active_feed)
1745                                 $cv["title"] = truncate_string($line["title"], 30);
1746
1747                         array_push($ret_arr, $cv);
1748
1749                 }
1750
1751                 return $ret_arr;
1752         }
1753
1754         function get_pgsql_version($link) {
1755                 $result = db_query($link, "SELECT version() AS version");
1756                 $version = explode(" ", db_fetch_result($result, 0, "version"));
1757                 return $version[1];
1758         }
1759
1760         /**
1761          * @return array (code => Status code, message => error message if available)
1762          *
1763          *                 0 - OK, Feed already exists
1764          *                 1 - OK, Feed added
1765          *                 2 - Invalid URL
1766          *                 3 - URL content is HTML, no feeds available
1767          *                 4 - URL content is HTML which contains multiple feeds.
1768          *                     Here you should call extractfeedurls in rpc-backend
1769          *                     to get all possible feeds.
1770          *                 5 - Couldn't download the URL content.
1771          */
1772         function subscribe_to_feed($link, $url, $cat_id = 0,
1773                         $auth_login = '', $auth_pass = '', $need_auth = false) {
1774
1775                 global $fetch_last_error;
1776
1777                 require_once "include/rssfuncs.php";
1778
1779                 $url = fix_url($url);
1780
1781                 if (!$url || !validate_feed_url($url)) return array("code" => 2);
1782
1783                 $update_method = 0;
1784
1785                 $result = db_query($link, "SELECT twitter_oauth FROM ttrss_users
1786                         WHERE id = ".$_SESSION['uid']);
1787
1788                 $has_oauth = db_fetch_result($result, 0, 'twitter_oauth');
1789
1790                 if (!$need_auth || !$has_oauth || strpos($url, '://api.twitter.com') === false) {
1791                         if (!fetch_file_contents($url, false, $auth_login, $auth_pass))
1792                                 return array("code" => 5, "message" => $fetch_last_error);
1793
1794                         if (url_is_html($url, $auth_login, $auth_pass)) {
1795                                 $feedUrls = get_feeds_from_html($url, $auth_login, $auth_pass);
1796                                 if (count($feedUrls) == 0) {
1797                                         return array("code" => 3);
1798                                 } else if (count($feedUrls) > 1) {
1799                                         return array("code" => 4);
1800                                 }
1801                                 //use feed url as new URL
1802                                 $url = key($feedUrls);
1803                         }
1804
1805                         } else {
1806                                 if (!fetch_twitter_rss($link, $url, $_SESSION['uid']))
1807                                         return array("code" => 5);
1808
1809                                 $update_method = 3;
1810                         }
1811                 if ($cat_id == "0" || !$cat_id) {
1812                         $cat_qpart = "NULL";
1813                 } else {
1814                         $cat_qpart = "'$cat_id'";
1815                 }
1816
1817                 $result = db_query($link,
1818                         "SELECT id FROM ttrss_feeds
1819                         WHERE feed_url = '$url' AND owner_uid = ".$_SESSION["uid"]);
1820
1821                 if (db_num_rows($result) == 0) {
1822                         $result = db_query($link,
1823                                 "INSERT INTO ttrss_feeds
1824                                         (owner_uid,feed_url,title,cat_id, auth_login,auth_pass,update_method)
1825                                 VALUES ('".$_SESSION["uid"]."', '$url',
1826                                 '[Unknown]', $cat_qpart, '$auth_login', '$auth_pass', '$update_method')");
1827
1828                         $result = db_query($link,
1829                                 "SELECT id FROM ttrss_feeds WHERE feed_url = '$url'
1830                                         AND owner_uid = " . $_SESSION["uid"]);
1831
1832                         $feed_id = db_fetch_result($result, 0, "id");
1833
1834                         if ($feed_id) {
1835                                 update_rss_feed($link, $feed_id, true);
1836                         }
1837
1838                         return array("code" => 1);
1839                 } else {
1840                         return array("code" => 0);
1841                 }
1842         }
1843
1844         function print_feed_select($link, $id, $default_id = "",
1845                 $attributes = "", $include_all_feeds = true,
1846                 $root_id = false, $nest_level = 0) {
1847
1848                 if (!$root_id) {
1849                         print "<select id=\"$id\" name=\"$id\" $attributes>";
1850                         if ($include_all_feeds) {
1851                                 $is_selected = ("0" == $default_id) ? "selected=\"1\"" : "";
1852                                 print "<option $is_selected value=\"0\">".__('All feeds')."</option>";
1853                         }
1854                 }
1855
1856                 if (get_pref($link, 'ENABLE_FEED_CATS')) {
1857
1858                         if ($root_id)
1859                                 $parent_qpart = "parent_cat = '$root_id'";
1860                         else
1861                                 $parent_qpart = "parent_cat IS NULL";
1862
1863                         $result = db_query($link, "SELECT id,title,
1864                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1865                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1866                                 FROM ttrss_feed_categories
1867                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1868
1869                         while ($line = db_fetch_assoc($result)) {
1870
1871                                 for ($i = 0; $i < $nest_level; $i++)
1872                                         $line["title"] = " - " . $line["title"];
1873
1874                                 $is_selected = ("CAT:".$line["id"] == $default_id) ? "selected=\"1\"" : "";
1875
1876                                 printf("<option $is_selected value='CAT:%d'>%s</option>",
1877                                         $line["id"], htmlspecialchars($line["title"]));
1878
1879                                 if ($line["num_children"] > 0)
1880                                         print_feed_select($link, $id, $default_id, $attributes,
1881                                                 $include_all_feeds, $line["id"], $nest_level+1);
1882
1883                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1884                                         WHERE cat_id = '".$line["id"]."' AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1885
1886                                 while ($fline = db_fetch_assoc($feed_result)) {
1887                                         $is_selected = ($fline["id"] == $default_id) ? "selected=\"1\"" : "";
1888
1889                                         $fline["title"] = " + " . $fline["title"];
1890
1891                                         for ($i = 0; $i < $nest_level; $i++)
1892                                                 $fline["title"] = " - " . $fline["title"];
1893
1894                                         printf("<option $is_selected value='%d'>%s</option>",
1895                                                 $fline["id"], htmlspecialchars($fline["title"]));
1896                                 }
1897                         }
1898
1899                         if (!$root_id) {
1900                                 $is_selected = ($default_id == "CAT:0") ? "selected=\"1\"" : "";
1901
1902                                 printf("<option $is_selected value='CAT:0'>%s</option>",
1903                                         __("Uncategorized"));
1904
1905                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1906                                         WHERE cat_id IS NULL AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1907
1908                                 while ($fline = db_fetch_assoc($feed_result)) {
1909                                         $is_selected = ($fline["id"] == $default_id && !$default_is_cat) ? "selected=\"1\"" : "";
1910
1911                                         $fline["title"] = " + " . $fline["title"];
1912
1913                                         for ($i = 0; $i < $nest_level; $i++)
1914                                                 $fline["title"] = " - " . $fline["title"];
1915
1916                                         printf("<option $is_selected value='%d'>%s</option>",
1917                                                 $fline["id"], htmlspecialchars($fline["title"]));
1918                                 }
1919                         }
1920
1921                 } else {
1922                         $result = db_query($link, "SELECT id,title FROM ttrss_feeds
1923                                 WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
1924
1925                         while ($line = db_fetch_assoc($result)) {
1926
1927                                 $is_selected = ($line["id"] == $default_id) ? "selected=\"1\"" : "";
1928
1929                                 printf("<option $is_selected value='%d'>%s</option>",
1930                                         $line["id"], htmlspecialchars($line["title"]));
1931                         }
1932                 }
1933
1934                 if (!$root_id) {
1935                         print "</select>";
1936                 }
1937         }
1938
1939         function print_feed_cat_select($link, $id, $default_id,
1940                 $attributes, $include_all_cats = true, $root_id = false, $nest_level = 0) {
1941
1942                         if (!$root_id) {
1943                                         print "<select id=\"$id\" name=\"$id\" default=\"$default_id\" onchange=\"catSelectOnChange(this)\" $attributes>";
1944                         }
1945
1946                         if ($root_id)
1947                                 $parent_qpart = "parent_cat = '$root_id'";
1948                         else
1949                                 $parent_qpart = "parent_cat IS NULL";
1950
1951                         $result = db_query($link, "SELECT id,title,
1952                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1953                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1954                                 FROM ttrss_feed_categories
1955                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1956
1957                         while ($line = db_fetch_assoc($result)) {
1958                                 if ($line["id"] == $default_id) {
1959                                         $is_selected = "selected=\"1\"";
1960                                 } else {
1961                                         $is_selected = "";
1962                                 }
1963
1964                                 for ($i = 0; $i < $nest_level; $i++)
1965                                         $line["title"] = " - " . $line["title"];
1966
1967                                 if ($line["title"])
1968                                         printf("<option $is_selected value='%d'>%s</option>",
1969                                                 $line["id"], htmlspecialchars($line["title"]));
1970
1971                                 if ($line["num_children"] > 0)
1972                                         print_feed_cat_select($link, $id, $default_id, $attributes,
1973                                                 $include_all_cats, $line["id"], $nest_level+1);
1974                         }
1975
1976                         if (!$root_id) {
1977                                 if ($include_all_cats) {
1978                                         if (db_num_rows($result) > 0) {
1979                                                 print "<option disabled=\"1\">--------</option>";
1980                                         }
1981
1982                                         if ($default_id == 0) {
1983                                                 $is_selected = "selected=\"1\"";
1984                                         } else {
1985                                                 $is_selected = "";
1986                                         }
1987
1988                                         print "<option $is_selected value=\"0\">".__('Uncategorized')."</option>";
1989                                 }
1990                                 print "</select>";
1991                         }
1992                 }
1993
1994         function checkbox_to_sql_bool($val) {
1995                 return ($val == "on") ? "true" : "false";
1996         }
1997
1998         function getFeedCatTitle($link, $id) {
1999                 if ($id == -1) {
2000                         return __("Special");
2001                 } else if ($id < -10) {
2002                         return __("Labels");
2003                 } else if ($id > 0) {
2004                         $result = db_query($link, "SELECT ttrss_feed_categories.title
2005                                 FROM ttrss_feeds, ttrss_feed_categories WHERE ttrss_feeds.id = '$id' AND
2006                                         cat_id = ttrss_feed_categories.id");
2007                         if (db_num_rows($result) == 1) {
2008                                 return db_fetch_result($result, 0, "title");
2009                         } else {
2010                                 return __("Uncategorized");
2011                         }
2012                 } else {
2013                         return "getFeedCatTitle($id) failed";
2014                 }
2015
2016         }
2017
2018         function getFeedIcon($id) {
2019                 switch ($id) {
2020                 case 0:
2021                         return "images/archive.png";
2022                         break;
2023                 case -1:
2024                         return "images/mark_set.png";
2025                         break;
2026                 case -2:
2027                         return "images/pub_set.png";
2028                         break;
2029                 case -3:
2030                         return "images/fresh.png";
2031                         break;
2032                 case -4:
2033                         return "images/tag.png";
2034                         break;
2035                 case -6:
2036                         return "images/recently_read.png";
2037                         break;
2038                 default:
2039                         if ($id < -10) {
2040                                 return "images/label.png";
2041                         } else {
2042                                 if (file_exists(ICONS_DIR . "/$id.ico"))
2043                                         return ICONS_URL . "/$id.ico";
2044                         }
2045                         break;
2046                 }
2047         }
2048
2049         function getFeedTitle($link, $id) {
2050                 if ($id == -1) {
2051                         return __("Starred articles");
2052                 } else if ($id == -2) {
2053                         return __("Published articles");
2054                 } else if ($id == -3) {
2055                         return __("Fresh articles");
2056                 } else if ($id == -4) {
2057                         return __("All articles");
2058                 } else if ($id === 0 || $id === "0") {
2059                         return __("Archived articles");
2060                 } else if ($id == -6) {
2061                         return __("Recently read");
2062                 } else if ($id < -10) {
2063                         $label_id = -$id - 11;
2064                         $result = db_query($link, "SELECT caption FROM ttrss_labels2 WHERE id = '$label_id'");
2065                         if (db_num_rows($result) == 1) {
2066                                 return db_fetch_result($result, 0, "caption");
2067                         } else {
2068                                 return "Unknown label ($label_id)";
2069                         }
2070
2071                 } else if (is_numeric($id) && $id > 0) {
2072                         $result = db_query($link, "SELECT title FROM ttrss_feeds WHERE id = '$id'");
2073                         if (db_num_rows($result) == 1) {
2074                                 return db_fetch_result($result, 0, "title");
2075                         } else {
2076                                 return "Unknown feed ($id)";
2077                         }
2078                 } else {
2079                         return $id;
2080                 }
2081         }
2082
2083         function make_init_params($link) {
2084                 $params = array();
2085
2086                 $params["theme"] = get_user_theme($link);
2087                 $params["theme_options"] = get_user_theme_options($link);
2088
2089                 $params["sign_progress"] = theme_image($link, "images/indicator_white.gif");
2090                 $params["sign_progress_tiny"] = theme_image($link, "images/indicator_tiny.gif");
2091                 $params["sign_excl"] = theme_image($link, "images/sign_excl.png");
2092                 $params["sign_info"] = theme_image($link, "images/sign_info.png");
2093
2094                 foreach (array("ON_CATCHUP_SHOW_NEXT_FEED", "HIDE_READ_FEEDS",
2095                         "ENABLE_FEED_CATS", "FEEDS_SORT_BY_UNREAD", "CONFIRM_FEED_CATCHUP",
2096                         "CDM_AUTO_CATCHUP", "FRESH_ARTICLE_MAX_AGE", "DEFAULT_ARTICLE_LIMIT",
2097                         "HIDE_READ_SHOWS_SPECIAL", "COMBINED_DISPLAY_MODE") as $param) {
2098
2099                                  $params[strtolower($param)] = (int) get_pref($link, $param);
2100                  }
2101
2102                 $params["icons_url"] = ICONS_URL;
2103                 $params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
2104                 $params["default_include_children"] = get_pref($link, "_DEFAULT_INCLUDE_CHILDREN");
2105                 $params["default_view_mode"] = get_pref($link, "_DEFAULT_VIEW_MODE");
2106                 $params["default_view_limit"] = (int) get_pref($link, "_DEFAULT_VIEW_LIMIT");
2107                 $params["default_view_order_by"] = get_pref($link, "_DEFAULT_VIEW_ORDER_BY");
2108                 $params["bw_limit"] = (int) $_SESSION["bw_limit"];
2109
2110                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2111                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2112
2113                 $max_feed_id = db_fetch_result($result, 0, "mid");
2114                 $num_feeds = db_fetch_result($result, 0, "nf");
2115
2116                 $params["max_feed_id"] = (int) $max_feed_id;
2117                 $params["num_feeds"] = (int) $num_feeds;
2118
2119                 $params["collapsed_feedlist"] = (int) get_pref($link, "_COLLAPSED_FEEDLIST");
2120
2121                 $params["csrf_token"] = $_SESSION["csrf_token"];
2122
2123                 return $params;
2124         }
2125
2126         function make_runtime_info($link) {
2127                 $data = array();
2128
2129                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2130                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2131
2132                 $max_feed_id = db_fetch_result($result, 0, "mid");
2133                 $num_feeds = db_fetch_result($result, 0, "nf");
2134
2135                 $data["max_feed_id"] = (int) $max_feed_id;
2136                 $data["num_feeds"] = (int) $num_feeds;
2137
2138                 $data['last_article_id'] = getLastArticleId($link);
2139                 $data['cdm_expanded'] = get_pref($link, 'CDM_EXPANDED');
2140
2141                 if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
2142
2143                         $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
2144
2145                         if (time() - $_SESSION["daemon_stamp_check"] > 30) {
2146
2147                                 $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
2148
2149                                 if ($stamp) {
2150                                         $stamp_delta = time() - $stamp;
2151
2152                                         if ($stamp_delta > 1800) {
2153                                                 $stamp_check = 0;
2154                                         } else {
2155                                                 $stamp_check = 1;
2156                                                 $_SESSION["daemon_stamp_check"] = time();
2157                                         }
2158
2159                                         $data['daemon_stamp_ok'] = $stamp_check;
2160
2161                                         $stamp_fmt = date("Y.m.d, G:i", $stamp);
2162
2163                                         $data['daemon_stamp'] = $stamp_fmt;
2164                                 }
2165                         }
2166                 }
2167
2168                 if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
2169                                 $new_version_details = @check_for_update($link);
2170
2171                                 $data['new_version_available'] = (int) ($new_version_details != false);
2172
2173                                 $_SESSION["last_version_check"] = time();
2174                                 $_SESSION["version_data"] = $new_version_details;
2175                 }
2176
2177                 return $data;
2178         }
2179
2180         function search_to_sql($link, $search, $match_on) {
2181
2182                 $search_query_part = "";
2183
2184                 $keywords = explode(" ", $search);
2185                 $query_keywords = array();
2186
2187                 foreach ($keywords as $k) {
2188                         if (strpos($k, "-") === 0) {
2189                                 $k = substr($k, 1);
2190                                 $not = "NOT";
2191                         } else {
2192                                 $not = "";
2193                         }
2194
2195                         $commandpair = explode(":", mb_strtolower($k), 2);
2196
2197                         if ($commandpair[0] == "note" && $commandpair[1]) {
2198
2199                                 if ($commandpair[1] == "true")
2200                                         array_push($query_keywords, "($not (note IS NOT NULL AND note != ''))");
2201                                 else
2202                                         array_push($query_keywords, "($not (note IS NULL OR note = ''))");
2203
2204                         } else if ($commandpair[0] == "star" && $commandpair[1]) {
2205
2206                                 if ($commandpair[1] == "true")
2207                                         array_push($query_keywords, "($not (marked = true))");
2208                                 else
2209                                         array_push($query_keywords, "($not (marked = false))");
2210
2211                         } else if ($commandpair[0] == "pub" && $commandpair[1]) {
2212
2213                                 if ($commandpair[1] == "true")
2214                                         array_push($query_keywords, "($not (published = true))");
2215                                 else
2216                                         array_push($query_keywords, "($not (published = false))");
2217
2218                         } else if (strpos($k, "@") === 0) {
2219
2220                                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $_SESSION['uid']);
2221                                 $orig_ts = strtotime(substr($k, 1));
2222                                 $k = date("Y-m-d", convert_timestamp($orig_ts, $user_tz_string, 'UTC'));
2223
2224                                 //$k = date("Y-m-d", strtotime(substr($k, 1)));
2225
2226                                 array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
2227                         } else if ($match_on == "both") {
2228                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2229                                                 OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2230                         } else if ($match_on == "title") {
2231                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%'))");
2232                         } else if ($match_on == "content") {
2233                                 array_push($query_keywords, "(UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2234                         }
2235                 }
2236
2237                 $search_query_part = implode("AND", $query_keywords);
2238
2239                 return $search_query_part;
2240         }
2241
2242         function getChildCategories($link, $cat, $owner_uid) {
2243                 $rv = array();
2244
2245                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories
2246                         WHERE parent_cat = '$cat' AND owner_uid = $owner_uid");
2247
2248                 while ($line = db_fetch_assoc($result)) {
2249                         array_push($rv, $line["id"]);
2250                         $rv = array_merge($rv, getChildCategories($link, $line["id"], $owner_uid));
2251                 }
2252
2253                 return $rv;
2254         }
2255
2256         function queryFeedHeadlines($link, $feed, $limit, $view_mode, $cat_view, $search, $search_mode, $match_on, $override_order = false, $offset = 0, $owner_uid = 0, $filter = false, $since_id = 0, $include_children = false) {
2257
2258                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2259
2260                 $ext_tables_part = "";
2261
2262                         if ($search) {
2263
2264                                 if (SPHINX_ENABLED) {
2265                                         $ids = join(",", @sphinx_search($search, 0, 500));
2266
2267                                         if ($ids)
2268                                                 $search_query_part = "ref_id IN ($ids) AND ";
2269                                         else
2270                                                 $search_query_part = "ref_id = -1 AND ";
2271
2272                                 } else {
2273                                         $search_query_part = search_to_sql($link, $search, $match_on);
2274                                         $search_query_part .= " AND ";
2275                                 }
2276
2277                         } else {
2278                                 $search_query_part = "";
2279                         }
2280
2281                         if ($filter) {
2282                                 $filter_query_part = filter_to_sql($filter);
2283                         } else {
2284                                 $filter_query_part = "";
2285                         }
2286
2287                         if ($since_id) {
2288                                 $since_id_part = "ttrss_entries.id > $since_id AND ";
2289                         } else {
2290                                 $since_id_part = "";
2291                         }
2292
2293                         $view_query_part = "";
2294
2295                         if ($view_mode == "adaptive" || $view_query_part == "noscores") {
2296                                 if ($search) {
2297                                         $view_query_part = " ";
2298                                 } else if ($feed != -1) {
2299                                         $unread = getFeedUnread($link, $feed, $cat_view);
2300
2301                                         if ($cat_view && $feed > 0 && $include_children)
2302                                                 $unread += getCategoryChildrenUnread($link, $feed);
2303
2304                                         if ($unread > 0) {
2305                                                 $view_query_part = " unread = true AND ";
2306                                         }
2307                                 }
2308                         }
2309
2310                         if ($view_mode == "marked") {
2311                                 $view_query_part = " marked = true AND ";
2312                         }
2313
2314                         if ($view_mode == "published") {
2315                                 $view_query_part = " published = true AND ";
2316                         }
2317
2318                         if ($view_mode == "unread") {
2319                                 $view_query_part = " unread = true AND ";
2320                         }
2321
2322                         if ($view_mode == "updated") {
2323                                 $view_query_part = " (last_read is null and unread = false) AND ";
2324                         }
2325
2326                         if ($limit > 0) {
2327                                 $limit_query_part = "LIMIT " . $limit;
2328                         }
2329
2330                         $vfeed_query_part = "";
2331
2332                         // override query strategy and enable feed display when searching globally
2333                         if ($search && $search_mode == "all_feeds") {
2334                                 $query_strategy_part = "ttrss_entries.id > 0";
2335                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2336                         /* tags */
2337                         } else if (preg_match("/^-?[0-9][0-9]*$/", $feed) == false) {
2338                                 $query_strategy_part = "ttrss_entries.id > 0";
2339                                 $vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
2340                                         id = feed_id) as feed_title,";
2341                         } else if ($feed > 0 && $search && $search_mode == "this_cat") {
2342
2343                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2344
2345                                 $tmp_result = false;
2346
2347                                 if ($cat_view) {
2348                                         $tmp_result = db_query($link, "SELECT id
2349                                                 FROM ttrss_feeds WHERE cat_id = '$feed'");
2350                                 } else {
2351                                         $tmp_result = db_query($link, "SELECT id
2352                                                 FROM ttrss_feeds WHERE cat_id = (SELECT cat_id FROM ttrss_feeds
2353                                                         WHERE id = '$feed') AND id != '$feed'");
2354                                 }
2355
2356                                 $cat_siblings = array();
2357
2358                                 if (db_num_rows($tmp_result) > 0) {
2359                                         while ($p = db_fetch_assoc($tmp_result)) {
2360                                                 array_push($cat_siblings, "feed_id = " . $p["id"]);
2361                                         }
2362
2363                                         $query_strategy_part = sprintf("(feed_id = %d OR %s)",
2364                                                 $feed, implode(" OR ", $cat_siblings));
2365
2366                                 } else {
2367                                         $query_strategy_part = "ttrss_entries.id > 0";
2368                                 }
2369
2370                         } else if ($feed > 0) {
2371
2372                                 if ($cat_view) {
2373
2374                                         if ($feed > 0) {
2375                                                 if ($include_children) {
2376                                                         # sub-cats
2377                                                         $subcats = getChildCategories($link, $feed, $owner_uid);
2378
2379                                                         if (count($subcats) == 0) {
2380                                                                 $query_strategy_part = "cat_id = '$feed'";
2381                                                         } else {
2382                                                                 array_push($subcats, $feed);
2383                                                                 $query_strategy_part = "cat_id IN (".
2384                                                                         implode(",", $subcats).")";
2385                                                         }
2386                                                 } else {
2387                                                         $query_strategy_part = "cat_id = '$feed'";
2388                                                 }
2389
2390                                         } else {
2391                                                 $query_strategy_part = "cat_id IS NULL";
2392                                         }
2393
2394                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2395
2396                                 } else {
2397                                         $query_strategy_part = "feed_id = '$feed'";
2398                                 }
2399                         } else if ($feed == 0 && !$cat_view) { // archive virtual feed
2400                                 $query_strategy_part = "feed_id IS NULL";
2401                         } else if ($feed == 0 && $cat_view) { // uncategorized
2402                                 $query_strategy_part = "cat_id IS NULL AND feed_id IS NOT NULL";
2403                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2404                         } else if ($feed == -1) { // starred virtual feed
2405                                 $query_strategy_part = "marked = true";
2406                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2407                         } else if ($feed == -2) { // published virtual feed OR labels category
2408
2409                                 if (!$cat_view) {
2410                                         $query_strategy_part = "published = true";
2411                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2412                                 } else {
2413                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2414
2415                                         $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2416
2417                                         $query_strategy_part = "ttrss_labels2.id = ttrss_user_labels2.label_id AND
2418                                                 ttrss_user_labels2.article_id = ref_id";
2419
2420                                 }
2421                         } else if ($feed == -6) { // recently read
2422                                 $query_strategy_part = "unread = false AND last_read IS NOT NULL";
2423                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2424                                 $override_order = "last_read DESC";
2425                         } else if ($feed == -3) { // fresh virtual feed
2426                                 $query_strategy_part = "unread = true AND score >= 0";
2427
2428                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
2429
2430                                 if (DB_TYPE == "pgsql") {
2431                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
2432                                 } else {
2433                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
2434                                 }
2435
2436                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2437                         } else if ($feed == -4) { // all articles virtual feed
2438                                 $query_strategy_part = "true";
2439                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2440                         } else if ($feed <= -10) { // labels
2441                                 $label_id = -$feed - 11;
2442
2443                                 $query_strategy_part = "label_id = '$label_id' AND
2444                                         ttrss_labels2.id = ttrss_user_labels2.label_id AND
2445                                         ttrss_user_labels2.article_id = ref_id";
2446
2447                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2448                                 $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2449
2450                         } else {
2451                                 $query_strategy_part = "id > 0"; // dumb
2452                         }
2453
2454                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
2455                                 $date_sort_field = "updated";
2456                         } else {
2457                                 $date_sort_field = "date_entered";
2458                         }
2459
2460                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
2461                                 $order_by = "$date_sort_field";
2462                         } else {
2463                                 $order_by = "$date_sort_field DESC";
2464                         }
2465
2466                         if ($view_mode != "noscores") {
2467                                 $order_by = "score DESC, $order_by";
2468                         }
2469
2470                         if ($override_order) {
2471                                 $order_by = $override_order;
2472                         }
2473
2474                         $feed_title = "";
2475
2476                         if ($search) {
2477                                 $feed_title = "Search results";
2478                         } else {
2479                                 if ($cat_view) {
2480                                         $feed_title = getCategoryTitle($link, $feed);
2481                                 } else {
2482                                         if (is_numeric($feed) && $feed > 0) {
2483                                                 $result = db_query($link, "SELECT title,site_url,last_error
2484                                                         FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = $owner_uid");
2485
2486                                                 $feed_title = db_fetch_result($result, 0, "title");
2487                                                 $feed_site_url = db_fetch_result($result, 0, "site_url");
2488                                                 $last_error = db_fetch_result($result, 0, "last_error");
2489                                         } else {
2490                                                 $feed_title = getFeedTitle($link, $feed);
2491                                         }
2492                                 }
2493                         }
2494
2495                         $content_query_part = "content as content_preview,";
2496
2497                         if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
2498
2499                                 if ($feed >= 0) {
2500                                         $feed_kind = "Feeds";
2501                                 } else {
2502                                         $feed_kind = "Labels";
2503                                 }
2504
2505                                 if ($limit_query_part) {
2506                                         $offset_query_part = "OFFSET $offset";
2507                                 }
2508
2509                                 if ($vfeed_query_part && get_pref($link, 'VFEED_GROUP_BY_FEED', $owner_uid)) {
2510                                         if (!$override_order) {
2511                                                 $order_by = "ttrss_feeds.title, $order_by";
2512                                         }
2513                                 }
2514
2515                                 if ($feed != "0") {
2516                                         $from_qpart = "ttrss_entries,ttrss_user_entries,ttrss_feeds$ext_tables_part";
2517                                         $feed_check_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
2518
2519                                 } else {
2520                                         $from_qpart = "ttrss_entries,ttrss_user_entries$ext_tables_part
2521                                                 LEFT JOIN ttrss_feeds ON (feed_id = ttrss_feeds.id)";
2522                                 }
2523
2524                                 $query = "SELECT DISTINCT
2525                                                 date_entered,
2526                                                 guid,
2527                                                 ttrss_entries.id,ttrss_entries.title,
2528                                                 updated,
2529                                                 label_cache,
2530                                                 tag_cache,
2531                                                 always_display_enclosures,
2532                                                 site_url,
2533                                                 note,
2534                                                 num_comments,
2535                                                 comments,
2536                                                 int_id,
2537                                                 unread,feed_id,marked,published,link,last_read,orig_feed_id,
2538                                                 ".SUBSTRING_FOR_DATE."(last_read,1,19) as last_read_noms,
2539                                                 $vfeed_query_part
2540                                                 $content_query_part
2541                                                 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated_noms,
2542                                                 author,score
2543                                         FROM
2544                                                 $from_qpart
2545                                         WHERE
2546                                         $feed_check_qpart
2547                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
2548                                         ttrss_user_entries.owner_uid = '$owner_uid' AND
2549                                         $search_query_part
2550                                         $filter_query_part
2551                                         $view_query_part
2552                                         $since_id_part
2553                                         $query_strategy_part ORDER BY $order_by
2554                                         $limit_query_part $offset_query_part";
2555
2556                                 if ($_REQUEST["debug"]) print $query;
2557
2558                                 $result = db_query($link, $query);
2559
2560                         } else {
2561                                 // browsing by tag
2562
2563                                 $select_qpart = "SELECT DISTINCT " .
2564                                                                 "date_entered," .
2565                                                                 "guid," .
2566                                                                 "note," .
2567                                                                 "ttrss_entries.id as id," .
2568                                                                 "title," .
2569                                                                 "updated," .
2570                                                                 "unread," .
2571                                                                 "feed_id," .
2572                                                                 "orig_feed_id," .
2573                                                                 "marked," .
2574                                                                 "num_comments, " .
2575                                                                 "comments, " .
2576                                                                 "tag_cache," .
2577                                                                 "label_cache," .
2578                                                                 "link," .
2579                                                                 "last_read," .
2580                                                                 SUBSTRING_FOR_DATE . "(last_read,1,19) as last_read_noms," .
2581                                                                 $since_id_part .
2582                                                                 $vfeed_query_part .
2583                                                                 $content_query_part .
2584                                                                 SUBSTRING_FOR_DATE . "(updated,1,19) as updated_noms," .
2585                                                                 "score ";
2586
2587                                 $feed_kind = "Tags";
2588                                 $all_tags = explode(",", $feed);
2589                                 if ($search_mode == 'any') {
2590                                         $tag_sql = "tag_name in (" . implode(", ", array_map("db_quote", $all_tags)) . ")";
2591                                         $from_qpart = " FROM ttrss_entries,ttrss_user_entries,ttrss_tags ";
2592                                         $where_qpart = " WHERE " .
2593                                                                    "ref_id = ttrss_entries.id AND " .
2594                                                                    "ttrss_user_entries.owner_uid = $owner_uid AND " .
2595                                                                    "post_int_id = int_id AND $tag_sql AND " .
2596                                                                    $view_query_part .
2597                                                                    $search_query_part .
2598                                                                    $query_strategy_part . " ORDER BY $order_by " .
2599                                                                    $limit_query_part;
2600
2601                                 } else {
2602                                         $i = 1;
2603                                         $sub_selects = array();
2604                                         $sub_ands = array();
2605                                         foreach ($all_tags as $term) {
2606                                                 array_push($sub_selects, "(SELECT post_int_id from ttrss_tags WHERE tag_name = " . db_quote($term) . " AND owner_uid = $owner_uid) as A$i");
2607                                                 $i++;
2608                                         }
2609                                         if ($i > 2) {
2610                                                 $x = 1;
2611                                                 $y = 2;
2612                                                 do {
2613                                                         array_push($sub_ands, "A$x.post_int_id = A$y.post_int_id");
2614                                                         $x++;
2615                                                         $y++;
2616                                                 } while ($y < $i);
2617                                         }
2618                                         array_push($sub_ands, "A1.post_int_id = ttrss_user_entries.int_id and ttrss_user_entries.owner_uid = $owner_uid");
2619                                         array_push($sub_ands, "ttrss_user_entries.ref_id = ttrss_entries.id");
2620                                         $from_qpart = " FROM " . implode(", ", $sub_selects) . ", ttrss_user_entries, ttrss_entries";
2621                                         $where_qpart = " WHERE " . implode(" AND ", $sub_ands);
2622                                 }
2623                                 //                              error_log("TAG SQL: " . $tag_sql);
2624                                 // $tag_sql = "tag_name = '$feed'";   DEFAULT way
2625
2626                                 //                              error_log("[". $select_qpart . "][" . $from_qpart . "][" .$where_qpart . "]");
2627                                 $result = db_query($link, $select_qpart . $from_qpart . $where_qpart);
2628                         }
2629
2630                         return array($result, $feed_title, $feed_site_url, $last_error);
2631
2632         }
2633
2634         function sanitize($link, $str, $force_strip_tags = false, $owner = false, $site_url = false) {
2635                 global $purifier;
2636
2637                 if (!$owner) $owner = $_SESSION["uid"];
2638
2639                 $res = trim($str); if (!$res) return '';
2640
2641                 // create global Purifier object if needed
2642                 if (!$purifier) {
2643                         require_once 'lib/htmlpurifier/library/HTMLPurifier.auto.php';
2644
2645                         $config = HTMLPurifier_Config::createDefault();
2646
2647                         $allowed = "p,a[href],i,em,b,strong,code,pre,blockquote,br,img[src|alt|title|align|hspace],ul,ol,li,h1,h2,h3,h4,s,object[classid|type|id|name|width|height|codebase],param[name|value],table,tr,td,span[class]";
2648
2649                         $config->set('HTML.SafeObject', true);
2650                         @$config->set('HTML', 'Allowed', $allowed);
2651                         $config->set('Output.FlashCompat', true);
2652                         $config->set('Attr.EnableID', true);
2653                         if (!defined('MOBILE_VERSION')) {
2654                                 @$config->set('Cache', 'SerializerPath', CACHE_DIR . "/htmlpurifier");
2655                         } else {
2656                                 @$config->set('Cache', 'SerializerPath', "../" . CACHE_DIR . "/htmlpurifier");
2657                         }
2658
2659                         $config->set('Filter.YouTube', true);
2660
2661                         $purifier = new HTMLPurifier($config);
2662                 }
2663
2664                 $res = $purifier->purify($res);
2665
2666                 if (get_pref($link, "STRIP_IMAGES", $owner)) {
2667                         $res = preg_replace('/<img[^>]+>/is', '', $res);
2668                 }
2669
2670                 if (strpos($res, "href=") === false)
2671                         $res = rewrite_urls($res);
2672
2673                 $charset_hack = '<head>
2674                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
2675                 </head>';
2676
2677                 $res = trim($res); if (!$res) return '';
2678
2679                 libxml_use_internal_errors(true);
2680
2681                 $doc = new DOMDocument();
2682                 $doc->loadHTML($charset_hack . $res);
2683                 $xpath = new DOMXPath($doc);
2684
2685                 $entries = $xpath->query('(//a[@href]|//img[@src])');
2686                 $br_inserted = 0;
2687
2688                 foreach ($entries as $entry) {
2689
2690                         if ($site_url) {
2691
2692                                 if ($entry->hasAttribute('href'))
2693                                         $entry->setAttribute('href',
2694                                                 rewrite_relative_url($site_url, $entry->getAttribute('href')));
2695
2696                                 if ($entry->hasAttribute('src'))
2697                                         if (preg_match('/^image.php\?i=[a-z0-9]+$/', $entry->getAttribute('src')) == 0)
2698                                                 $entry->setAttribute('src',
2699                                                         rewrite_relative_url($site_url, $entry->getAttribute('src')));
2700                         }
2701
2702                         if (strtolower($entry->nodeName) == "a") {
2703                                 $entry->setAttribute("target", "_blank");
2704                         }
2705
2706                         if (strtolower($entry->nodeName) == "img" && !$br_inserted) {
2707                                 $br = $doc->createElement("br");
2708
2709                                 if ($entry->parentNode->nextSibling) {
2710                                         $entry->parentNode->insertBefore($br, $entry->nextSibling);
2711                                         $br_inserted = 1;
2712                                 }
2713
2714                         }
2715                 }
2716
2717                 $node = $doc->getElementsByTagName('body')->item(0);
2718
2719                 return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
2720         }
2721
2722         /**
2723          * Send by mail a digest of last articles.
2724          *
2725          * @param mixed $link The database connection.
2726          * @param integer $limit The maximum number of articles by digest.
2727          * @return boolean Return false if digests are not enabled.
2728          */
2729         function send_headlines_digests($link, $debug = false) {
2730
2731                 require_once 'lib/phpmailer/class.phpmailer.php';
2732
2733                 $user_limit = 15; // amount of users to process (e.g. emails to send out)
2734                 $limit = 1000; // maximum amount of headlines to include
2735
2736                 if ($debug) _debug("Sending digests, batch of max $user_limit users, headline limit = $limit");
2737
2738                 if (DB_TYPE == "pgsql") {
2739                         $interval_query = "last_digest_sent < NOW() - INTERVAL '1 days'";
2740                 } else if (DB_TYPE == "mysql") {
2741                         $interval_query = "last_digest_sent < DATE_SUB(NOW(), INTERVAL 1 DAY)";
2742                 }
2743
2744                 $result = db_query($link, "SELECT id,email FROM ttrss_users
2745                                 WHERE email != '' AND (last_digest_sent IS NULL OR $interval_query)");
2746
2747                 while ($line = db_fetch_assoc($result)) {
2748
2749                         if (get_pref($link, 'DIGEST_ENABLE', $line['id'], false)) {
2750                                 $preferred_ts = strtotime(get_pref($link, 'DIGEST_PREFERRED_TIME', $line['id'], '00:00'));
2751
2752                                 // try to send digests within 2 hours of preferred time
2753                                 if ($preferred_ts && time() >= $preferred_ts &&
2754                                                 time() - $preferred_ts <= 7200) {
2755
2756                                         if ($debug) print "Sending digest for UID:" . $line['id'] . " - " . $line["email"] . " ... ";
2757
2758                                         $do_catchup = get_pref($link, 'DIGEST_CATCHUP', $line['id'], false);
2759
2760                                         global $tz_offset;
2761
2762                                         // reset tz_offset global to prevent tz cache clash between users
2763                                         $tz_offset = -1;
2764
2765                                         $tuple = prepare_headlines_digest($link, $line["id"], 1, $limit);
2766                                         $digest = $tuple[0];
2767                                         $headlines_count = $tuple[1];
2768                                         $affected_ids = $tuple[2];
2769                                         $digest_text = $tuple[3];
2770
2771                                         if ($headlines_count > 0) {
2772
2773                                                 $mail = new PHPMailer();
2774
2775                                                 $mail->PluginDir = "lib/phpmailer/";
2776                                                 $mail->SetLanguage("en", "lib/phpmailer/language/");
2777
2778                                                 $mail->CharSet = "UTF-8";
2779
2780                                                 $mail->From = SMTP_FROM_ADDRESS;
2781                                                 $mail->FromName = SMTP_FROM_NAME;
2782                                                 $mail->AddAddress($line["email"], $line["login"]);
2783
2784                                                 if (SMTP_HOST) {
2785                                                         $mail->Host = SMTP_HOST;
2786                                                         $mail->Mailer = "smtp";
2787                                                         $mail->SMTPAuth = SMTP_LOGIN != '';
2788                                                         $mail->Username = SMTP_LOGIN;
2789                                                         $mail->Password = SMTP_PASSWORD;
2790                                                 }
2791
2792                                                 $mail->IsHTML(true);
2793                                                 $mail->Subject = DIGEST_SUBJECT;
2794                                                 $mail->Body = $digest;
2795                                                 $mail->AltBody = $digest_text;
2796
2797                                                 $rc = $mail->Send();
2798
2799                                                 if (!$rc && $debug) print "ERROR: " . $mail->ErrorInfo;
2800
2801                                                 if ($debug) print "RC=$rc\n";
2802
2803                                                 if ($rc && $do_catchup) {
2804                                                         if ($debug) print "Marking affected articles as read...\n";
2805                                                         catchupArticlesById($link, $affected_ids, 0, $line["id"]);
2806                                                 }
2807                                         } else {
2808                                                 if ($debug) print "No headlines\n";
2809                                         }
2810
2811                                         db_query($link, "UPDATE ttrss_users SET last_digest_sent = NOW()
2812                                                 WHERE id = " . $line["id"]);
2813
2814                                 }
2815                         }
2816                 }
2817
2818                 if ($debug) _debug("All done.");
2819
2820         }
2821
2822         function prepare_headlines_digest($link, $user_id, $days = 1, $limit = 1000) {
2823
2824                 require_once "lib/MiniTemplator.class.php";
2825
2826                 $tpl = new MiniTemplator;
2827                 $tpl_t = new MiniTemplator;
2828
2829                 $tpl->readTemplateFromFile("templates/digest_template_html.txt");
2830                 $tpl_t->readTemplateFromFile("templates/digest_template.txt");
2831
2832                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $user_id);
2833                 $local_ts = convert_timestamp(time(), 'UTC', $user_tz_string);
2834
2835                 $tpl->setVariable('CUR_DATE', date('Y/m/d', $local_ts));
2836                 $tpl->setVariable('CUR_TIME', date('G:i', $local_ts));
2837
2838                 $tpl_t->setVariable('CUR_DATE', date('Y/m/d', $local_ts));
2839                 $tpl_t->setVariable('CUR_TIME', date('G:i', $local_ts));
2840
2841                 $affected_ids = array();
2842
2843                 if (DB_TYPE == "pgsql") {
2844                         $interval_query = "ttrss_entries.date_updated > NOW() - INTERVAL '$days days'";
2845                 } else if (DB_TYPE == "mysql") {
2846                         $interval_query = "ttrss_entries.date_updated > DATE_SUB(NOW(), INTERVAL $days DAY)";
2847                 }
2848
2849                 $result = db_query($link, "SELECT ttrss_entries.title,
2850                                 ttrss_feeds.title AS feed_title,
2851                                 COALESCE(ttrss_feed_categories.title, '".__('Uncategorized')."') AS cat_title,
2852                                 date_updated,
2853                                 ttrss_user_entries.ref_id,
2854                                 link,
2855                                 score,
2856                                 content,
2857                                 ".SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
2858                         FROM
2859                                 ttrss_user_entries,ttrss_entries,ttrss_feeds
2860                         LEFT JOIN
2861                                 ttrss_feed_categories ON (cat_id = ttrss_feed_categories.id)
2862                         WHERE
2863                                 ref_id = ttrss_entries.id AND feed_id = ttrss_feeds.id
2864                                 AND include_in_digest = true
2865                                 AND $interval_query
2866                                 AND ttrss_user_entries.owner_uid = $user_id
2867                                 AND unread = true
2868                                 AND score >= 0
2869                         ORDER BY ttrss_feed_categories.title, ttrss_feeds.title, score DESC, date_updated DESC
2870                         LIMIT $limit");
2871
2872                 $cur_feed_title = "";
2873
2874                 $headlines_count = db_num_rows($result);
2875
2876                 $headlines = array();
2877
2878                 while ($line = db_fetch_assoc($result)) {
2879                         array_push($headlines, $line);
2880                 }
2881
2882                 for ($i = 0; $i < sizeof($headlines); $i++) {
2883
2884                         $line = $headlines[$i];
2885
2886                         array_push($affected_ids, $line["ref_id"]);
2887
2888                         $updated = make_local_datetime($link, $line['last_updated'], false,
2889                                 $user_id);
2890
2891 /*                      if ($line["score"] != 0) {
2892                                 if ($line["score"] > 0) $line["score"] = '+' . $line["score"];
2893
2894                                 $line["title"] .= " (".$line['score'].")";
2895                         } */
2896
2897                         if (get_pref($link, 'ENABLE_FEED_CATS', $user_id)) {
2898                                 $line['feed_title'] = $line['cat_title'] . " / " . $line['feed_title'];
2899                         }
2900
2901                         $tpl->setVariable('FEED_TITLE', $line["feed_title"]);
2902                         $tpl->setVariable('ARTICLE_TITLE', $line["title"]);
2903                         $tpl->setVariable('ARTICLE_LINK', $line["link"]);
2904                         $tpl->setVariable('ARTICLE_UPDATED', $updated);
2905                         $tpl->setVariable('ARTICLE_EXCERPT',
2906                                 truncate_string(strip_tags($line["content"]), 300));
2907 //                      $tpl->setVariable('ARTICLE_CONTENT',
2908 //                              strip_tags($article_content));
2909
2910                         $tpl->addBlock('article');
2911
2912                         $tpl_t->setVariable('FEED_TITLE', $line["feed_title"]);
2913                         $tpl_t->setVariable('ARTICLE_TITLE', $line["title"]);
2914                         $tpl_t->setVariable('ARTICLE_LINK', $line["link"]);
2915                         $tpl_t->setVariable('ARTICLE_UPDATED', $updated);
2916 //                      $tpl_t->setVariable('ARTICLE_EXCERPT',
2917 //                              truncate_string(strip_tags($line["excerpt"]), 100));
2918
2919                         $tpl_t->addBlock('article');
2920
2921                         if ($headlines[$i]['feed_title'] != $headlines[$i+1]['feed_title']) {
2922                                 $tpl->addBlock('feed');
2923                                 $tpl_t->addBlock('feed');
2924                         }
2925
2926                 }
2927
2928                 $tpl->addBlock('digest');
2929                 $tpl->generateOutputToString($tmp);
2930
2931                 $tpl_t->addBlock('digest');
2932                 $tpl_t->generateOutputToString($tmp_t);
2933
2934                 return array($tmp, $headlines_count, $affected_ids, $tmp_t);
2935         }
2936
2937         function check_for_update($link) {
2938                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2939                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION;
2940
2941                         $version_data = @fetch_file_contents($version_url);
2942
2943                         if ($version_data) {
2944                                 $version_data = json_decode($version_data, true);
2945                                 if ($version_data && $version_data['version']) {
2946
2947                                         if (version_compare(VERSION, $version_data['version']) == -1) {
2948                                                 return $version_data;
2949                                         }
2950                                 }
2951                         }
2952                 }
2953                 return false;
2954         }
2955
2956         function markArticlesById($link, $ids, $cmode) {
2957
2958                 $tmp_ids = array();
2959
2960                 foreach ($ids as $id) {
2961                         array_push($tmp_ids, "ref_id = '$id'");
2962                 }
2963
2964                 $ids_qpart = join(" OR ", $tmp_ids);
2965
2966                 if ($cmode == 0) {
2967                         db_query($link, "UPDATE ttrss_user_entries SET
2968                         marked = false,last_read = NOW()
2969                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2970                 } else if ($cmode == 1) {
2971                         db_query($link, "UPDATE ttrss_user_entries SET
2972                         marked = true
2973                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2974                 } else {
2975                         db_query($link, "UPDATE ttrss_user_entries SET
2976                         marked = NOT marked,last_read = NOW()
2977                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2978                 }
2979         }
2980
2981         function publishArticlesById($link, $ids, $cmode) {
2982
2983                 $tmp_ids = array();
2984
2985                 foreach ($ids as $id) {
2986                         array_push($tmp_ids, "ref_id = '$id'");
2987                 }
2988
2989                 $ids_qpart = join(" OR ", $tmp_ids);
2990
2991                 if ($cmode == 0) {
2992                         db_query($link, "UPDATE ttrss_user_entries SET
2993                         published = false,last_read = NOW()
2994                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2995                 } else if ($cmode == 1) {
2996                         db_query($link, "UPDATE ttrss_user_entries SET
2997                         published = true
2998                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2999                 } else {
3000                         db_query($link, "UPDATE ttrss_user_entries SET
3001                         published = NOT published,last_read = NOW()
3002                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3003                 }
3004
3005                 if (PUBSUBHUBBUB_HUB) {
3006                         $rss_link = get_self_url_prefix() .
3007                                 "/public.php?op=rss&id=-2&key=" .
3008                                 get_feed_access_key($link, -2, false);
3009
3010                         $p = new Publisher(PUBSUBHUBBUB_HUB);
3011
3012                         $pubsub_result = $p->publish_update($rss_link);
3013                 }
3014         }
3015
3016         function catchupArticlesById($link, $ids, $cmode, $owner_uid = false) {
3017
3018                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3019                 if (count($ids) == 0) return;
3020
3021                 $tmp_ids = array();
3022
3023                 foreach ($ids as $id) {
3024                         array_push($tmp_ids, "ref_id = '$id'");
3025                 }
3026
3027                 $ids_qpart = join(" OR ", $tmp_ids);
3028
3029                 if ($cmode == 0) {
3030                         db_query($link, "UPDATE ttrss_user_entries SET
3031                         unread = false,last_read = NOW()
3032                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3033                 } else if ($cmode == 1) {
3034                         db_query($link, "UPDATE ttrss_user_entries SET
3035                         unread = true
3036                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3037                 } else {
3038                         db_query($link, "UPDATE ttrss_user_entries SET
3039                         unread = NOT unread,last_read = NOW()
3040                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3041                 }
3042
3043                 /* update ccache */
3044
3045                 $result = db_query($link, "SELECT DISTINCT feed_id FROM ttrss_user_entries
3046                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3047
3048                 while ($line = db_fetch_assoc($result)) {
3049                         ccache_update($link, $line["feed_id"], $owner_uid);
3050                 }
3051         }
3052
3053         function catchupArticleById($link, $id, $cmode) {
3054
3055                 if ($cmode == 0) {
3056                         db_query($link, "UPDATE ttrss_user_entries SET
3057                         unread = false,last_read = NOW()
3058                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3059                 } else if ($cmode == 1) {
3060                         db_query($link, "UPDATE ttrss_user_entries SET
3061                         unread = true
3062                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3063                 } else {
3064                         db_query($link, "UPDATE ttrss_user_entries SET
3065                         unread = NOT unread,last_read = NOW()
3066                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3067                 }
3068
3069                 $feed_id = getArticleFeed($link, $id);
3070                 ccache_update($link, $feed_id, $_SESSION["uid"]);
3071         }
3072
3073         function make_guid_from_title($title) {
3074                 return preg_replace("/[ \"\',.:;]/", "-",
3075                         mb_strtolower(strip_tags($title), 'utf-8'));
3076         }
3077
3078         function get_article_tags($link, $id, $owner_uid = 0, $tag_cache = false) {
3079
3080                 $a_id = db_escape_string($id);
3081
3082                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3083
3084                 $query = "SELECT DISTINCT tag_name,
3085                         owner_uid as owner FROM
3086                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
3087                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
3088
3089                 $obj_id = md5("TAGS:$owner_uid:$id");
3090                 $tags = array();
3091
3092                 /* check cache first */
3093
3094                 if ($tag_cache === false) {
3095                         $result = db_query($link, "SELECT tag_cache FROM ttrss_user_entries
3096                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
3097
3098                         $tag_cache = db_fetch_result($result, 0, "tag_cache");
3099                 }
3100
3101                 if ($tag_cache) {
3102                         $tags = explode(",", $tag_cache);
3103                 } else {
3104
3105                         /* do it the hard way */
3106
3107                         $tmp_result = db_query($link, $query);
3108
3109                         while ($tmp_line = db_fetch_assoc($tmp_result)) {
3110                                 array_push($tags, $tmp_line["tag_name"]);
3111                         }
3112
3113                         /* update the cache */
3114
3115                         $tags_str = db_escape_string(join(",", $tags));
3116
3117                         db_query($link, "UPDATE ttrss_user_entries
3118                                 SET tag_cache = '$tags_str' WHERE ref_id = '$id'
3119                                 AND owner_uid = $owner_uid");
3120                 }
3121
3122                 return $tags;
3123         }
3124
3125         function trim_array($array) {
3126                 $tmp = $array;
3127                 array_walk($tmp, 'trim');
3128                 return $tmp;
3129         }
3130
3131         function tag_is_valid($tag) {
3132                 if ($tag == '') return false;
3133                 if (preg_match("/^[0-9]*$/", $tag)) return false;
3134                 if (mb_strlen($tag) > 250) return false;
3135
3136                 if (function_exists('iconv')) {
3137                         $tag = iconv("utf-8", "utf-8", $tag);
3138                 }
3139
3140                 if (!$tag) return false;
3141
3142                 return true;
3143         }
3144
3145         function render_login_form($link, $mobile = 0) {
3146                 switch ($mobile) {
3147                 case 0:
3148                         require_once "login_form.php";
3149                         break;
3150                 case 1:
3151                         require_once "mobile/login_form.php";
3152                         break;
3153                 case 2:
3154                         require_once "mobile/classic/login_form.php";
3155                 }
3156         }
3157
3158         // from http://developer.apple.com/internet/safari/faq.html
3159         function no_cache_incantation() {
3160                 header("Expires: Mon, 22 Dec 1980 00:00:00 GMT"); // Happy birthday to me :)
3161                 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
3162                 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); // HTTP/1.1
3163                 header("Cache-Control: post-check=0, pre-check=0", false);
3164                 header("Pragma: no-cache"); // HTTP/1.0
3165         }
3166
3167         function format_warning($msg, $id = "") {
3168                 global $link;
3169                 return "<div class=\"warning\" id=\"$id\">
3170                         <img src=\"".theme_image($link, "images/sign_excl.png")."\">$msg</div>";
3171         }
3172
3173         function format_notice($msg, $id = "") {
3174                 global $link;
3175                 return "<div class=\"notice\" id=\"$id\">
3176                         <img src=\"".theme_image($link, "images/sign_info.png")."\">$msg</div>";
3177         }
3178
3179         function format_error($msg, $id = "") {
3180                 global $link;
3181                 return "<div class=\"error\" id=\"$id\">
3182                         <img src=\"".theme_image($link, "images/sign_excl.png")."\">$msg</div>";
3183         }
3184
3185         function print_notice($msg) {
3186                 return print format_notice($msg);
3187         }
3188
3189         function print_warning($msg) {
3190                 return print format_warning($msg);
3191         }
3192
3193         function print_error($msg) {
3194                 return print format_error($msg);
3195         }
3196
3197
3198         function T_sprintf() {
3199                 $args = func_get_args();
3200                 return vsprintf(__(array_shift($args)), $args);
3201         }
3202
3203         function format_inline_player($link, $url, $ctype) {
3204
3205                 $entry = "";
3206
3207                 if (strpos($ctype, "audio/") === 0) {
3208
3209                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
3210                                 strpos($_SERVER['HTTP_USER_AGENT'], "Chrome") !== false ||
3211                                 strpos($_SERVER['HTTP_USER_AGENT'], "Safari") !== false )) {
3212
3213                                 $id = 'AUDIO-' . uniqid();
3214
3215                                 $entry .= "<audio id=\"$id\"\">
3216                                         <source src=\"$url\"></source>
3217                                         </audio>";
3218
3219                                 $entry .= "<span onclick=\"player(this)\"
3220                                         title=\"".__("Click to play")."\" status=\"0\"
3221                                         class=\"player\" audio-id=\"$id\">".__("Play")."</span>";
3222
3223                         } else {
3224
3225                                 $entry .= "<object type=\"application/x-shockwave-flash\"
3226                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
3227                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
3228                                         <param name=\"movie\"
3229                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
3230                                         </object>";
3231                         }
3232                 }
3233
3234                 $filename = substr($url, strrpos($url, "/")+1);
3235
3236                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3237                         $filename . " (" . $ctype . ")" . "</a>";
3238
3239                 return $entry;
3240         }
3241
3242         function format_article($link, $id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
3243                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3244
3245                 $rv = array();
3246
3247                 $rv['id'] = $id;
3248
3249                 /* we can figure out feed_id from article id anyway, why do we
3250                  * pass feed_id here? let's ignore the argument :( */
3251
3252                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3253                         WHERE ref_id = '$id'");
3254
3255                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
3256
3257                 $rv['feed_id'] = $feed_id;
3258
3259                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
3260
3261                 $result = db_query($link, "SELECT rtl_content, always_display_enclosures FROM ttrss_feeds
3262                         WHERE id = '$feed_id' AND owner_uid = $owner_uid");
3263
3264                 if (db_num_rows($result) == 1) {
3265                         $rtl_content = sql_bool_to_bool(db_fetch_result($result, 0, "rtl_content"));
3266                         $always_display_enclosures = sql_bool_to_bool(db_fetch_result($result, 0, "always_display_enclosures"));
3267                 } else {
3268                         $rtl_content = false;
3269                         $always_display_enclosures = false;
3270                 }
3271
3272                 if ($rtl_content) {
3273                         $rtl_tag = "dir=\"RTL\"";
3274                         $rtl_class = "RTL";
3275                 } else {
3276                         $rtl_tag = "";
3277                         $rtl_class = "";
3278                 }
3279
3280                 if ($mark_as_read) {
3281                         $result = db_query($link, "UPDATE ttrss_user_entries
3282                                 SET unread = false,last_read = NOW()
3283                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
3284
3285                         ccache_update($link, $feed_id, $owner_uid);
3286                 }
3287
3288                 $result = db_query($link, "SELECT title,link,content,feed_id,comments,int_id,
3289                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
3290                         (SELECT icon_url FROM ttrss_feeds WHERE id = feed_id) as icon_url,
3291                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
3292                         num_comments,
3293                         tag_cache,
3294                         author,
3295                         orig_feed_id,
3296                         note
3297                         FROM ttrss_entries,ttrss_user_entries
3298                         WHERE   id = '$id' AND ref_id = id AND owner_uid = $owner_uid");
3299
3300                 if ($result) {
3301
3302                         $line = db_fetch_assoc($result);
3303
3304                         if ($line["icon_url"]) {
3305                                 $feed_icon = "<img src=\"" . $line["icon_url"] . "\">";
3306                         } else {
3307                                 $feed_icon = "&nbsp;";
3308                         }
3309
3310                         $feed_site_url = $line['site_url'];
3311
3312                         $num_comments = $line["num_comments"];
3313                         $entry_comments = "";
3314
3315                         if ($num_comments > 0) {
3316                                 if ($line["comments"]) {
3317                                         $comments_url = $line["comments"];
3318                                 } else {
3319                                         $comments_url = $line["link"];
3320                                 }
3321                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
3322                         } else {
3323                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
3324                                         $entry_comments = "<a target='_blank' href=\"".$line["comments"]."\">comments</a>";
3325                                 }
3326                         }
3327
3328                         if ($zoom_mode) {
3329                                 header("Content-Type: text/html");
3330                                 $rv['content'] .= "<html><head>
3331                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
3332                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
3333                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
3334                                         </head><body>";
3335                         }
3336
3337                         $title_escaped = db_escape_string($line['title']);
3338
3339                         $rv['content'] .= "<div id=\"PTITLE-$id\" style=\"display : none\">" .
3340                                 truncate_string(strip_tags($line['title']), 15) . "</div>";
3341
3342                         $rv['content'] .= "<div id=\"PTITLE-FULL-$id\" style=\"display : none\">" .
3343                                 strip_tags($line['title']) . "</div>";
3344
3345                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
3346
3347                         $rv['content'] .= "<div onclick=\"return postClicked(event, $id)\"
3348                                 class=\"postHeader\" id=\"POSTHDR-$id\">";
3349
3350                         $entry_author = $line["author"];
3351
3352                         if ($entry_author) {
3353                                 $entry_author = __(" - ") . $entry_author;
3354                         }
3355
3356                         $parsed_updated = make_local_datetime($link, $line["updated"], true,
3357                                 $owner_uid, true);
3358
3359                         $rv['content'] .= "<div class=\"postDate$rtl_class\">$parsed_updated</div>";
3360
3361                         if ($line["link"]) {
3362                                 $rv['content'] .= "<div class='postTitle' clear='both'><a target='_blank'
3363                                         title=\"".htmlspecialchars($line['title'])."\"
3364                                         href=\"" .
3365                                         $line["link"] . "\">" .
3366                                         truncate_string($line["title"], 100) .
3367                                         "<span class='author'>$entry_author</span></a></div>";
3368                         } else {
3369                                 $rv['content'] .= "<div class='postTitle' clear='both'>" . $line["title"] . "$entry_author</div>";
3370                         }
3371
3372                         $tag_cache = $line["tag_cache"];
3373
3374                         if (!$tag_cache)
3375                                 $tags = get_article_tags($link, $id, $owner_uid);
3376                         else
3377                                 $tags = explode(",", $tag_cache);
3378
3379                         $tags_str = format_tags_string($tags, $id);
3380                         $tags_str_full = join(", ", $tags);
3381
3382                         if (!$tags_str_full) $tags_str_full = __("no tags");
3383
3384                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
3385
3386                         $rv['content'] .= "<div class='postTags' style='float : right'>
3387                                 <img src='".theme_image($link, 'images/tag.png')."'
3388                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
3389
3390                         if (!$zoom_mode) {
3391                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
3392                                         <a title=\"".__('Edit tags for this article')."\"
3393                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
3394
3395                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
3396                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
3397                                         position=\"below\">$tags_str_full</div>";
3398
3399                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/art-zoom.png')."\"
3400                                                 class='tagsPic' style=\"cursor : pointer\"
3401                                                 onclick=\"postOpenInNewTab(event, $id)\"
3402                                                 alt='Zoom' title='".__('Open article in new tab')."'>";
3403
3404                                 $button_plugins = explode(",", ARTICLE_BUTTON_PLUGINS);
3405
3406                                 foreach ($button_plugins as $p) {
3407                                         $pclass = trim("button_${p}");
3408
3409                                         if (class_exists($pclass)) {
3410                                                 $plugin = new $pclass($link);
3411                                                 $rv['content'] .= $plugin->render($id, $line);
3412                                         }
3413                                 }
3414
3415                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/digest_checkbox.png')."\"
3416                                                 class='tagsPic' style=\"cursor : pointer\"
3417                                                 onclick=\"closeArticlePanel($id)\"
3418                                                 title='".__('Close article')."'>";
3419
3420                         } else {
3421                                 $tags_str = strip_tags($tags_str);
3422                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
3423                         }
3424                         $rv['content'] .= "</div>";
3425                         $rv['content'] .= "<div clear='both'>$entry_comments</div>";
3426
3427                         if ($line["orig_feed_id"]) {
3428
3429                                 $tmp_result = db_query($link, "SELECT * FROM ttrss_archived_feeds
3430                                         WHERE id = ".$line["orig_feed_id"]);
3431
3432                                 if (db_num_rows($tmp_result) != 0) {
3433
3434                                         $rv['content'] .= "<div clear='both'>";
3435                                         $rv['content'] .= __("Originally from:");
3436
3437                                         $rv['content'] .= "&nbsp;";
3438
3439                                         $tmp_line = db_fetch_assoc($tmp_result);
3440
3441                                         $rv['content'] .= "<a target='_blank'
3442                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
3443                                                 $tmp_line['title'] . "</a>";
3444
3445                                         $rv['content'] .= "&nbsp;";
3446
3447                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3448                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.png'></a>";
3449
3450                                         $rv['content'] .= "</div>";
3451                                 }
3452                         }
3453
3454                         $rv['content'] .= "</div>";
3455
3456                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3457                                 if ($line['note']) {
3458                                         $rv['content'] .= format_article_note($id, $line['note']);
3459                                 }
3460                         $rv['content'] .= "</div>";
3461
3462                         $rv['content'] .= "<div class=\"postIcon\">" .
3463                                 "<a target=\"_blank\" title=\"".__("Visit the website")."\"$
3464                                 href=\"".htmlspecialchars($feed_site_url)."\">".
3465                                 $feed_icon . "</a></div>";
3466
3467                         $rv['content'] .= "<div class=\"postContent\">";
3468
3469                         // N-grams
3470
3471                         if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_RELATED_THRESHOLD')) {
3472
3473                                 $ngram_result = db_query($link, "SELECT id,title FROM
3474                                                 ttrss_entries,ttrss_user_entries
3475                                         WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
3476                                                 AND similarity(title, '$title_escaped') >= "._NGRAM_TITLE_RELATED_THRESHOLD."
3477                                                 AND title != '$title_escaped'
3478                                                 AND owner_uid = $owner_uid");
3479
3480                                 if (db_num_rows($ngram_result) > 0) {
3481                                         $rv['content'] .= "<div dojoType=\"dijit.form.DropDownButton\">".
3482                                                 "<span>" . __('Related')."</span>";
3483                                         $rv['content'] .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3484
3485                                         while ($nline = db_fetch_assoc($ngram_result)) {
3486                                                 $rv['content'] .= "<div onclick=\"hlOpenInNewTab(null,".$nline['id'].")\"
3487                                                         dojoType=\"dijit.MenuItem\">".$nline['title']."</div>";
3488
3489                                         }
3490                                         $rv['content'] .= "</div></div><br/";
3491                                 }
3492                         }
3493
3494                         $article_content = sanitize($link, $line["content"], false, $owner_uid,
3495                                 $feed_site_url);
3496
3497                         $rv['content'] .= $article_content;
3498
3499                         $rv['content'] .= format_article_enclosures($link, $id,
3500                                 $always_display_enclosures, $article_content);
3501
3502                         $rv['content'] .= "</div>";
3503
3504                         $rv['content'] .= "</div>";
3505
3506                 }
3507
3508                 if ($zoom_mode) {
3509                         $rv['content'] .= "
3510                                 <div style=\"text-align : center\">
3511                                 <button onclick=\"return window.close()\">".
3512                                         __("Close this window")."</button></div>";
3513                         $rv['content'] .= "</body></html>";
3514                 }
3515
3516                 return $rv;
3517
3518         }
3519
3520         function print_checkpoint($n, $s) {
3521                 $ts = getmicrotime();
3522                 echo sprintf("<!-- CP[$n] %.4f seconds -->", $ts - $s);
3523                 return $ts;
3524         }
3525
3526         function sanitize_tag($tag) {
3527                 $tag = trim($tag);
3528
3529                 $tag = mb_strtolower($tag, 'utf-8');
3530
3531                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3532
3533 //              $tag = str_replace('"', "", $tag);
3534 //              $tag = str_replace("+", " ", $tag);
3535                 $tag = str_replace("technorati tag: ", "", $tag);
3536
3537                 return $tag;
3538         }
3539
3540         function get_self_url_prefix() {
3541                 return SELF_URL_PATH;
3542         }
3543
3544         function opml_publish_url($link){
3545
3546                 $url_path = get_self_url_prefix();
3547                 $url_path .= "/opml.php?op=publish&key=" .
3548                         get_feed_access_key($link, 'OPML:Publish', false, $_SESSION["uid"]);
3549
3550                 return $url_path;
3551         }
3552
3553         /**
3554          * Purge a feed contents, marked articles excepted.
3555          *
3556          * @param mixed $link The database connection.
3557          * @param integer $id The id of the feed to purge.
3558          * @return void
3559          */
3560         function clear_feed_articles($link, $id) {
3561
3562                 if ($id != 0) {
3563                         $result = db_query($link, "DELETE FROM ttrss_user_entries
3564                         WHERE feed_id = '$id' AND marked = false AND owner_uid = " . $_SESSION["uid"]);
3565                 } else {
3566                         $result = db_query($link, "DELETE FROM ttrss_user_entries
3567                         WHERE feed_id IS NULL AND marked = false AND owner_uid = " . $_SESSION["uid"]);
3568                 }
3569
3570                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
3571                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
3572
3573                 ccache_update($link, $id, $_SESSION['uid']);
3574         } // function clear_feed_articles
3575
3576         /**
3577          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3578          *
3579          * @return string The Mozilla Firefox feed adding URL.
3580          */
3581         function add_feed_url() {
3582                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3583
3584                 $url_path = get_self_url_prefix() .
3585                         "/backend.php?op=pref-feeds&quiet=1&method=add&feed_url=%s";
3586                 return $url_path;
3587         } // function add_feed_url
3588
3589         function encrypt_password($pass, $salt = '', $mode2 = false) {
3590                 if ($salt && $mode2) {
3591                         return "MODE2:" . hash('sha256', $salt . $pass);
3592                 } else if ($salt) {
3593                         return "SHA1X:" . sha1("$salt:$pass");
3594                 } else {
3595                         return "SHA1:" . sha1($pass);
3596                 }
3597         } // function encrypt_password
3598
3599         function sanitize_article_content($text) {
3600                 # we don't support CDATA sections in articles, they break our own escaping
3601                 $text = preg_replace("/\[\[CDATA/", "", $text);
3602                 $text = preg_replace("/\]\]\>/", "", $text);
3603                 return $text;
3604         }
3605
3606         function load_filters($link, $feed_id, $owner_uid, $action_id = false) {
3607                 $filters = array();
3608
3609                 $cat_id = getFeedCategory($link, $feed_id);
3610
3611                 $result = db_query($link, "SELECT * FROM ttrss_filters2 WHERE
3612                         owner_uid = $owner_uid AND enabled = true");
3613
3614                 while ($line = db_fetch_assoc($result)) {
3615                         $filter_id = $line["id"];
3616
3617                         $result2 = db_query($link, "SELECT
3618                                 r.reg_exp, r.feed_id, r.cat_id, r.cat_filter, t.name AS type_name
3619                                 FROM ttrss_filters2_rules AS r,
3620                                 ttrss_filter_types AS t
3621                                 WHERE
3622                                         (cat_id IS NULL OR cat_id = '$cat_id') AND
3623                                         (feed_id IS NULL OR feed_id = '$feed_id') AND
3624                                         filter_type = t.id AND filter_id = '$filter_id'");
3625
3626                         $rules = array();
3627                         $actions = array();
3628
3629                         while ($rule_line = db_fetch_assoc($result2)) {
3630 #                               print_r($rule_line);
3631
3632                                 $rule = array();
3633                                 $rule["reg_exp"] = $rule_line["reg_exp"];
3634                                 $rule["type"] = $rule_line["type_name"];
3635
3636                                 array_push($rules, $rule);
3637                         }
3638
3639                         $result2 = db_query($link, "SELECT a.action_param,t.name AS type_name
3640                                 FROM ttrss_filters2_actions AS a,
3641                                 ttrss_filter_actions AS t
3642                                 WHERE
3643                                         action_id = t.id AND filter_id = '$filter_id'");
3644
3645                         while ($action_line = db_fetch_assoc($result2)) {
3646 #                               print_r($action_line);
3647
3648                                 $action = array();
3649                                 $action["type"] = $action_line["type_name"];
3650                                 $action["param"] = $action_line["action_param"];
3651
3652                                 array_push($actions, $action);
3653                         }
3654
3655
3656                         $filter = array();
3657                         $filter["match_any_rule"] = sql_bool_to_bool($line["match_any_rule"]);
3658                         $filter["rules"] = $rules;
3659                         $filter["actions"] = $actions;
3660
3661                         if (count($rules) > 0 && count($actions) > 0) {
3662                                 array_push($filters, $filter);
3663                         }
3664                 }
3665
3666                 return $filters;
3667         }
3668
3669         function get_score_pic($score) {
3670                 if ($score > 100) {
3671                         return "score_high.png";
3672                 } else if ($score > 0) {
3673                         return "score_half_high.png";
3674                 } else if ($score < -100) {
3675                         return "score_low.png";
3676                 } else if ($score < 0) {
3677                         return "score_half_low.png";
3678                 } else {
3679                         return "score_neutral.png";
3680                 }
3681         }
3682
3683         function feed_has_icon($id) {
3684                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3685         }
3686
3687         function init_connection($link) {
3688                 if ($link) {
3689
3690                         if (DB_TYPE == "pgsql") {
3691                                 pg_query($link, "set client_encoding = 'UTF-8'");
3692                                 pg_set_client_encoding("UNICODE");
3693                                 pg_query($link, "set datestyle = 'ISO, european'");
3694                                 pg_query($link, "set TIME ZONE 0");
3695                         } else {
3696                                 db_query($link, "SET time_zone = '+0:0'");
3697
3698                                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
3699                                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
3700                                 }
3701                         }
3702                         return true;
3703                 } else {
3704                         print "Unable to connect to database:" . db_last_error();
3705                         return false;
3706                 }
3707         }
3708
3709         /* function ccache_zero($link, $feed_id, $owner_uid) {
3710                 db_query($link, "UPDATE ttrss_counters_cache SET
3711                         value = 0, updated = NOW() WHERE
3712                         feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3713         } */
3714
3715         function ccache_zero_all($link, $owner_uid) {
3716                 db_query($link, "UPDATE ttrss_counters_cache SET
3717                         value = 0 WHERE owner_uid = '$owner_uid'");
3718
3719                 db_query($link, "UPDATE ttrss_cat_counters_cache SET
3720                         value = 0 WHERE owner_uid = '$owner_uid'");
3721         }
3722
3723         function ccache_remove($link, $feed_id, $owner_uid, $is_cat = false) {
3724
3725                 if (!$is_cat) {
3726                         $table = "ttrss_counters_cache";
3727                 } else {
3728                         $table = "ttrss_cat_counters_cache";
3729                 }
3730
3731                 db_query($link, "DELETE FROM $table WHERE
3732                         feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3733
3734         }
3735
3736         function ccache_update_all($link, $owner_uid) {
3737
3738                 if (get_pref($link, 'ENABLE_FEED_CATS', $owner_uid)) {
3739
3740                         $result = db_query($link, "SELECT feed_id FROM ttrss_cat_counters_cache
3741                                 WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
3742
3743                         while ($line = db_fetch_assoc($result)) {
3744                                 ccache_update($link, $line["feed_id"], $owner_uid, true);
3745                         }
3746
3747                         /* We have to manually include category 0 */
3748
3749                         ccache_update($link, 0, $owner_uid, true);
3750
3751                 } else {
3752                         $result = db_query($link, "SELECT feed_id FROM ttrss_counters_cache
3753                                 WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
3754
3755                         while ($line = db_fetch_assoc($result)) {
3756                                 print ccache_update($link, $line["feed_id"], $owner_uid);
3757
3758                         }
3759
3760                 }
3761         }
3762
3763         function ccache_find($link, $feed_id, $owner_uid, $is_cat = false,
3764                 $no_update = false) {
3765
3766                 if (!is_numeric($feed_id)) return;
3767
3768                 if (!$is_cat) {
3769                         $table = "ttrss_counters_cache";
3770                         if ($feed_id > 0) {
3771                                 $tmp_result = db_query($link, "SELECT owner_uid FROM ttrss_feeds
3772                                         WHERE id = '$feed_id'");
3773                                 $owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
3774                         }
3775                 } else {
3776                         $table = "ttrss_cat_counters_cache";
3777                 }
3778
3779                 if (DB_TYPE == "pgsql") {
3780                         $date_qpart = "updated > NOW() - INTERVAL '15 minutes'";
3781                 } else if (DB_TYPE == "mysql") {
3782                         $date_qpart = "updated > DATE_SUB(NOW(), INTERVAL 15 MINUTE)";
3783                 }
3784
3785                 $result = db_query($link, "SELECT value FROM $table
3786                         WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id'
3787                         LIMIT 1");
3788
3789                 if (db_num_rows($result) == 1) {
3790                         return db_fetch_result($result, 0, "value");
3791                 } else {
3792                         if ($no_update) {
3793                                 return -1;
3794                         } else {
3795                                 return ccache_update($link, $feed_id, $owner_uid, $is_cat);
3796                         }
3797                 }
3798
3799         }
3800
3801         function ccache_update($link, $feed_id, $owner_uid, $is_cat = false,
3802                 $update_pcat = true) {
3803
3804                 if (!is_numeric($feed_id)) return;
3805
3806                 if (!$is_cat && $feed_id > 0) {
3807                         $tmp_result = db_query($link, "SELECT owner_uid FROM ttrss_feeds
3808                                 WHERE id = '$feed_id'");
3809                         $owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
3810                 }
3811
3812                 $prev_unread = ccache_find($link, $feed_id, $owner_uid, $is_cat, true);
3813
3814                 /* When updating a label, all we need to do is recalculate feed counters
3815                  * because labels are not cached */
3816
3817                 if ($feed_id < 0) {
3818                         ccache_update_all($link, $owner_uid);
3819                         return;
3820                 }
3821
3822                 if (!$is_cat) {
3823                         $table = "ttrss_counters_cache";
3824                 } else {
3825                         $table = "ttrss_cat_counters_cache";
3826                 }
3827
3828                 if ($is_cat && $feed_id >= 0) {
3829                         if ($feed_id != 0) {
3830                                 $cat_qpart = "cat_id = '$feed_id'";
3831                         } else {
3832                                 $cat_qpart = "cat_id IS NULL";
3833                         }
3834
3835                         /* Recalculate counters for child feeds */
3836
3837                         $result = db_query($link, "SELECT id FROM ttrss_feeds
3838                                                 WHERE owner_uid = '$owner_uid' AND $cat_qpart");
3839
3840                         while ($line = db_fetch_assoc($result)) {
3841                                 ccache_update($link, $line["id"], $owner_uid, false, false);
3842                         }
3843
3844                         $result = db_query($link, "SELECT SUM(value) AS sv
3845                                 FROM ttrss_counters_cache, ttrss_feeds
3846                                 WHERE id = feed_id AND $cat_qpart AND
3847                                 ttrss_feeds.owner_uid = '$owner_uid'");
3848
3849                         $unread = (int) db_fetch_result($result, 0, "sv");
3850
3851                 } else {
3852                         $unread = (int) getFeedArticles($link, $feed_id, $is_cat, true, $owner_uid);
3853                 }
3854
3855                 db_query($link, "BEGIN");
3856
3857                 $result = db_query($link, "SELECT feed_id FROM $table
3858                         WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id' LIMIT 1");
3859
3860                 if (db_num_rows($result) == 1) {
3861                         db_query($link, "UPDATE $table SET
3862                                 value = '$unread', updated = NOW() WHERE
3863                                 feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3864
3865                 } else {
3866                         db_query($link, "INSERT INTO $table
3867                                 (feed_id, value, owner_uid, updated)
3868                                 VALUES
3869                                 ($feed_id, $unread, $owner_uid, NOW())");
3870                 }
3871
3872                 db_query($link, "COMMIT");
3873
3874                 if ($feed_id > 0 && $prev_unread != $unread) {
3875
3876                         if (!$is_cat) {
3877
3878                                 /* Update parent category */
3879
3880                                 if ($update_pcat) {
3881
3882                                         $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
3883                                                 WHERE owner_uid = '$owner_uid' AND id = '$feed_id'");
3884
3885                                         $cat_id = (int) db_fetch_result($result, 0, "cat_id");
3886
3887                                         ccache_update($link, $cat_id, $owner_uid, true);
3888
3889                                 }
3890                         }
3891                 } else if ($feed_id < 0) {
3892                         ccache_update_all($link, $owner_uid);
3893                 }
3894
3895                 return $unread;
3896         }
3897
3898         /* function ccache_cleanup($link, $owner_uid) {
3899
3900                 if (DB_TYPE == "pgsql") {
3901                         db_query($link, "DELETE FROM ttrss_counters_cache AS c1 WHERE
3902                                 (SELECT count(*) FROM ttrss_counters_cache AS c2
3903                                         WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
3904                                         AND owner_uid = '$owner_uid'");
3905
3906                         db_query($link, "DELETE FROM ttrss_cat_counters_cache AS c1 WHERE
3907                                 (SELECT count(*) FROM ttrss_cat_counters_cache AS c2
3908                                         WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
3909                                         AND owner_uid = '$owner_uid'");
3910                 } else {
3911                         db_query($link, "DELETE c1 FROM
3912                                         ttrss_counters_cache AS c1,
3913                                         ttrss_counters_cache AS c2
3914                                 WHERE
3915                                         c1.owner_uid = '$owner_uid' AND
3916                                         c1.owner_uid = c2.owner_uid AND
3917                                         c1.feed_id = c2.feed_id");
3918
3919                         db_query($link, "DELETE c1 FROM
3920                                         ttrss_cat_counters_cache AS c1,
3921                                         ttrss_cat_counters_cache AS c2
3922                                 WHERE
3923                                         c1.owner_uid = '$owner_uid' AND
3924                                         c1.owner_uid = c2.owner_uid AND
3925                                         c1.feed_id = c2.feed_id");
3926
3927                 }
3928         } */
3929
3930         function label_find_id($link, $label, $owner_uid) {
3931                 $result = db_query($link,
3932                         "SELECT id FROM ttrss_labels2 WHERE caption = '$label'
3933                                 AND owner_uid = '$owner_uid' LIMIT 1");
3934
3935                 if (db_num_rows($result) == 1) {
3936                         return db_fetch_result($result, 0, "id");
3937                 } else {
3938                         return 0;
3939                 }
3940         }
3941
3942         function get_article_labels($link, $id) {
3943                 $rv = array();
3944
3945
3946                 $result = db_query($link, "SELECT label_cache FROM
3947                         ttrss_user_entries WHERE ref_id = '$id' AND owner_uid = " .
3948                         $_SESSION["uid"]);
3949
3950                 $label_cache = db_fetch_result($result, 0, "label_cache");
3951
3952                 if ($label_cache) {
3953
3954                         $label_cache = json_decode($label_cache, true);
3955
3956                         if ($label_cache["no-labels"] == 1)
3957                                 return $rv;
3958                         else
3959                                 return $label_cache;
3960                 }
3961
3962                 $result = db_query($link,
3963                         "SELECT DISTINCT label_id,caption,fg_color,bg_color
3964                                 FROM ttrss_labels2, ttrss_user_labels2
3965                         WHERE id = label_id
3966                                 AND article_id = '$id'
3967                                 AND owner_uid = ".$_SESSION["uid"] . "
3968                         ORDER BY caption");
3969
3970                 while ($line = db_fetch_assoc($result)) {
3971                         $rk = array($line["label_id"], $line["caption"], $line["fg_color"],
3972                                 $line["bg_color"]);
3973                         array_push($rv, $rk);
3974                 }
3975
3976                 if (count($rv) > 0)
3977                         label_update_cache($link, $id, $rv);
3978                 else
3979                         label_update_cache($link, $id, array("no-labels" => 1));
3980
3981                 return $rv;
3982         }
3983
3984
3985         function label_find_caption($link, $label, $owner_uid) {
3986                 $result = db_query($link,
3987                         "SELECT caption FROM ttrss_labels2 WHERE id = '$label'
3988                                 AND owner_uid = '$owner_uid' LIMIT 1");
3989
3990                 if (db_num_rows($result) == 1) {
3991                         return db_fetch_result($result, 0, "caption");
3992                 } else {
3993                         return "";
3994                 }
3995         }
3996
3997         function label_update_cache($link, $id, $labels = false, $force = false) {
3998
3999                 if ($force)
4000                         label_clear_cache($link, $id);
4001
4002                 if (!$labels)
4003                         $labels = get_article_labels($link, $id);
4004
4005                 $labels = db_escape_string(json_encode($labels));
4006
4007                 db_query($link, "UPDATE ttrss_user_entries SET
4008                         label_cache = '$labels' WHERE ref_id = '$id'");
4009
4010         }
4011
4012         function label_clear_cache($link, $id) {
4013
4014                 db_query($link, "UPDATE ttrss_user_entries SET
4015                         label_cache = '' WHERE ref_id = '$id'");
4016
4017         }
4018
4019         function label_remove_article($link, $id, $label, $owner_uid) {
4020
4021                 $label_id = label_find_id($link, $label, $owner_uid);
4022
4023                 if (!$label_id) return;
4024
4025                 $result = db_query($link,
4026                         "DELETE FROM ttrss_user_labels2
4027                         WHERE
4028                                 label_id = '$label_id' AND
4029                                 article_id = '$id'");
4030
4031                 label_clear_cache($link, $id);
4032         }
4033
4034         function label_add_article($link, $id, $label, $owner_uid) {
4035
4036                 $label_id = label_find_id($link, $label, $owner_uid);
4037
4038                 if (!$label_id) return;
4039
4040                 $result = db_query($link,
4041                         "SELECT
4042                                 article_id FROM ttrss_labels2, ttrss_user_labels2
4043                         WHERE
4044                                 label_id = id AND
4045                                 label_id = '$label_id' AND
4046                                 article_id = '$id' AND owner_uid = '$owner_uid'
4047                         LIMIT 1");
4048
4049                 if (db_num_rows($result) == 0) {
4050                         db_query($link, "INSERT INTO ttrss_user_labels2
4051                                 (label_id, article_id) VALUES ('$label_id', '$id')");
4052                 }
4053
4054                 label_clear_cache($link, $id);
4055
4056         }
4057
4058         function label_remove($link, $id, $owner_uid) {
4059                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4060
4061                 db_query($link, "BEGIN");
4062
4063                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
4064                         WHERE id = '$id'");
4065
4066                 $caption = db_fetch_result($result, 0, "caption");
4067
4068                 $result = db_query($link, "DELETE FROM ttrss_labels2 WHERE id = '$id'
4069                         AND owner_uid = " . $owner_uid);
4070
4071                 if (db_affected_rows($link, $result) != 0 && $caption) {
4072
4073                         /* Remove access key for the label */
4074
4075                         $ext_id = -11 - $id;
4076
4077                         db_query($link, "DELETE FROM ttrss_access_keys WHERE
4078                                 feed_id = '$ext_id' AND owner_uid = $owner_uid");
4079
4080                         /* Disable filters that reference label being removed */
4081
4082                         db_query($link, "UPDATE ttrss_filters SET
4083                                 enabled = false WHERE action_param = '$caption'
4084                                         AND action_id = 7
4085                                         AND owner_uid = " . $owner_uid);
4086
4087                         /* Remove cached data */
4088
4089                         db_query($link, "UPDATE ttrss_user_entries SET label_cache = ''
4090                                 WHERE label_cache LIKE '%$caption%' AND owner_uid = " . $owner_uid);
4091
4092                 }
4093
4094                 db_query($link, "COMMIT");
4095         }
4096
4097         function label_create($link, $caption, $fg_color = '', $bg_color = '', $owner_uid) {
4098
4099                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
4100
4101                 db_query($link, "BEGIN");
4102
4103                 $result = false;
4104
4105                 $result = db_query($link, "SELECT id FROM ttrss_labels2
4106                         WHERE caption = '$caption' AND owner_uid = $owner_uid");
4107
4108                 if (db_num_rows($result) == 0) {
4109                         $result = db_query($link,
4110                                 "INSERT INTO ttrss_labels2 (caption,owner_uid,fg_color,bg_color)
4111                                         VALUES ('$caption', '$owner_uid', '$fg_color', '$bg_color')");
4112
4113                         $result = db_affected_rows($link, $result) != 0;
4114                 }
4115
4116                 db_query($link, "COMMIT");
4117
4118                 return $result;
4119         }
4120
4121         function format_tags_string($tags, $id) {
4122
4123                 $tags_str = "";
4124                 $tags_nolinks_str = "";
4125
4126                 $num_tags = 0;
4127
4128                 $tag_limit = 6;
4129
4130                 $formatted_tags = array();
4131
4132                 foreach ($tags as $tag) {
4133                         $num_tags++;
4134                         $tag_escaped = str_replace("'", "\\'", $tag);
4135
4136                         if (mb_strlen($tag) > 30) {
4137                                 $tag = truncate_string($tag, 30);
4138                         }
4139
4140                         $tag_str = "<a href=\"javascript:viewfeed('$tag_escaped')\">$tag</a>";
4141
4142                         array_push($formatted_tags, $tag_str);
4143
4144                         $tmp_tags_str = implode(", ", $formatted_tags);
4145
4146                         if ($num_tags == $tag_limit || mb_strlen($tmp_tags_str) > 150) {
4147                                 break;
4148                         }
4149                 }
4150
4151                 $tags_str = implode(", ", $formatted_tags);
4152
4153                 if ($num_tags < count($tags)) {
4154                         $tags_str .= ", &hellip;";
4155                 }
4156
4157                 if ($num_tags == 0) {
4158                         $tags_str = __("no tags");
4159                 }
4160
4161                 return $tags_str;
4162
4163         }
4164
4165         function format_article_labels($labels, $id) {
4166
4167                 $labels_str = "";
4168
4169                 foreach ($labels as $l) {
4170                         $labels_str .= sprintf("<span class='hlLabelRef'
4171                                 style='color : %s; background-color : %s'>%s</span>",
4172                                         $l[2], $l[3], $l[1]);
4173                         }
4174
4175                 return $labels_str;
4176
4177         }
4178
4179         function format_article_note($id, $note) {
4180
4181                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
4182                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
4183                         __('(edit note)')."</div>$note</div>";
4184
4185                 return $str;
4186         }
4187
4188         function toggle_collapse_cat($link, $cat_id, $mode) {
4189                 if ($cat_id > 0) {
4190                         $mode = bool_to_sql_bool($mode);
4191
4192                         db_query($link, "UPDATE ttrss_feed_categories SET
4193                                 collapsed = $mode WHERE id = '$cat_id' AND owner_uid = " .
4194                                 $_SESSION["uid"]);
4195                 } else {
4196                         $pref_name = '';
4197
4198                         switch ($cat_id) {
4199                         case -1:
4200                                 $pref_name = '_COLLAPSED_SPECIAL';
4201                                 break;
4202                         case -2:
4203                                 $pref_name = '_COLLAPSED_LABELS';
4204                                 break;
4205                         case 0:
4206                                 $pref_name = '_COLLAPSED_UNCAT';
4207                                 break;
4208                         }
4209
4210                         if ($pref_name) {
4211                                 if ($mode) {
4212                                         set_pref($link, $pref_name, 'true');
4213                                 } else {
4214                                         set_pref($link, $pref_name, 'false');
4215                                 }
4216                         }
4217                 }
4218         }
4219
4220         function remove_feed($link, $id, $owner_uid) {
4221
4222                 if ($id > 0) {
4223
4224                         /* save starred articles in Archived feed */
4225
4226                         db_query($link, "BEGIN");
4227
4228                         /* prepare feed if necessary */
4229
4230                         $result = db_query($link, "SELECT id FROM ttrss_archived_feeds
4231                                 WHERE id = '$id'");
4232
4233                         if (db_num_rows($result) == 0) {
4234                                 db_query($link, "INSERT INTO ttrss_archived_feeds
4235                                         (id, owner_uid, title, feed_url, site_url)
4236                                 SELECT id, owner_uid, title, feed_url, site_url from ttrss_feeds
4237                                 WHERE id = '$id'");
4238                         }
4239
4240                         db_query($link, "UPDATE ttrss_user_entries SET feed_id = NULL,
4241                                 orig_feed_id = '$id' WHERE feed_id = '$id' AND
4242                                         marked = true AND owner_uid = $owner_uid");
4243
4244                         /* Remove access key for the feed */
4245
4246                         db_query($link, "DELETE FROM ttrss_access_keys WHERE
4247                                 feed_id = '$id' AND owner_uid = $owner_uid");
4248
4249                         /* remove the feed */
4250
4251                         db_query($link, "DELETE FROM ttrss_feeds
4252                                         WHERE id = '$id' AND owner_uid = $owner_uid");
4253
4254                         db_query($link, "COMMIT");
4255
4256                         if (file_exists(ICONS_DIR . "/$id.ico")) {
4257                                 unlink(ICONS_DIR . "/$id.ico");
4258                         }
4259
4260                         ccache_remove($link, $id, $owner_uid);
4261
4262                 } else {
4263                         label_remove($link, -11-$id, $owner_uid);
4264                         ccache_remove($link, -11-$id, $owner_uid);
4265                 }
4266         }
4267
4268         function get_feed_category($link, $feed_cat, $parent_cat_id = false) {
4269                 if ($parent_cat_id) {
4270                         $parent_qpart = "parent_cat = '$parent_cat_id'";
4271                         $parent_insert = "'$parent_cat_id'";
4272                 } else {
4273                         $parent_qpart = "parent_cat IS NULL";
4274                         $parent_insert = "NULL";
4275                 }
4276
4277                 $result = db_query($link,
4278                         "SELECT id FROM ttrss_feed_categories
4279                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
4280
4281                 if (db_num_rows($result) == 0) {
4282                         return false;
4283                 } else {
4284                         return db_fetch_result($result, 0, "id");
4285                 }
4286         }
4287
4288         function add_feed_category($link, $feed_cat, $parent_cat_id = false) {
4289
4290                 if (!$feed_cat) return false;
4291
4292                 db_query($link, "BEGIN");
4293
4294                 if ($parent_cat_id) {
4295                         $parent_qpart = "parent_cat = '$parent_cat_id'";
4296                         $parent_insert = "'$parent_cat_id'";
4297                 } else {
4298                         $parent_qpart = "parent_cat IS NULL";
4299                         $parent_insert = "NULL";
4300                 }
4301
4302                 $result = db_query($link,
4303                         "SELECT id FROM ttrss_feed_categories
4304                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
4305
4306                 if (db_num_rows($result) == 0) {
4307
4308                         $result = db_query($link,
4309                                 "INSERT INTO ttrss_feed_categories (owner_uid,title,parent_cat)
4310                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat', $parent_insert)");
4311
4312                         db_query($link, "COMMIT");
4313
4314                         return true;
4315                 }
4316
4317                 return false;
4318         }
4319
4320         function remove_feed_category($link, $id, $owner_uid) {
4321
4322                 db_query($link, "DELETE FROM ttrss_feed_categories
4323                         WHERE id = '$id' AND owner_uid = $owner_uid");
4324
4325                 ccache_remove($link, $id, $owner_uid, true);
4326         }
4327
4328         function archive_article($link, $id, $owner_uid) {
4329                 db_query($link, "BEGIN");
4330
4331                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
4332                         WHERE ref_id = '$id' AND owner_uid = $owner_uid");
4333
4334                 if (db_num_rows($result) != 0) {
4335
4336                         /* prepare the archived table */
4337
4338                         $feed_id = (int) db_fetch_result($result, 0, "feed_id");
4339
4340                         if ($feed_id) {
4341                                 $result = db_query($link, "SELECT id FROM ttrss_archived_feeds
4342                                         WHERE id = '$feed_id'");
4343
4344                                 if (db_num_rows($result) == 0) {
4345                                         db_query($link, "INSERT INTO ttrss_archived_feeds
4346                                                 (id, owner_uid, title, feed_url, site_url)
4347                                         SELECT id, owner_uid, title, feed_url, site_url from ttrss_feeds
4348                                         WHERE id = '$feed_id'");
4349                                 }
4350
4351                                 db_query($link, "UPDATE ttrss_user_entries
4352                                         SET orig_feed_id = feed_id, feed_id = NULL
4353                                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
4354                         }
4355                 }
4356
4357                 db_query($link, "COMMIT");
4358         }
4359
4360         function getArticleFeed($link, $id) {
4361                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
4362                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
4363
4364                 if (db_num_rows($result) != 0) {
4365                         return db_fetch_result($result, 0, "feed_id");
4366                 } else {
4367                         return 0;
4368                 }
4369         }
4370
4371         /**
4372          * Fixes incomplete URLs by prepending "http://".
4373          * Also replaces feed:// with http://, and
4374          * prepends a trailing slash if the url is a domain name only.
4375          *
4376          * @param string $url Possibly incomplete URL
4377          *
4378          * @return string Fixed URL.
4379          */
4380         function fix_url($url) {
4381                 if (strpos($url, '://') === false) {
4382                         $url = 'http://' . $url;
4383                 } else if (substr($url, 0, 5) == 'feed:') {
4384                         $url = 'http:' . substr($url, 5);
4385                 }
4386
4387                 //prepend slash if the URL has no slash in it
4388                 // "http://www.example" -> "http://www.example/"
4389                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
4390                         $url .= '/';
4391                 }
4392
4393                 if ($url != "http:///")
4394                         return $url;
4395                 else
4396                         return '';
4397         }
4398
4399         function validate_feed_url($url) {
4400                 $parts = parse_url($url);
4401
4402                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
4403
4404         }
4405
4406         function get_article_enclosures($link, $id) {
4407
4408                 $query = "SELECT * FROM ttrss_enclosures
4409                         WHERE post_id = '$id' AND content_url != ''";
4410
4411                 $rv = array();
4412
4413                 $result = db_query($link, $query);
4414
4415                 if (db_num_rows($result) > 0) {
4416                         while ($line = db_fetch_assoc($result)) {
4417                                 array_push($rv, $line);
4418                         }
4419                 }
4420
4421                 return $rv;
4422         }
4423
4424         function api_get_feeds($link, $cat_id, $unread_only, $limit, $offset) {
4425
4426                         $feeds = array();
4427
4428                         /* Labels */
4429
4430                         if ($cat_id == -4 || $cat_id == -2) {
4431                                 $counters = getLabelCounters($link, true);
4432
4433                                 foreach (array_values($counters) as $cv) {
4434
4435                                         $unread = $cv["counter"];
4436
4437                                         if ($unread || !$unread_only) {
4438
4439                                                 $row = array(
4440                                                                 "id" => $cv["id"],
4441                                                                 "title" => $cv["description"],
4442                                                                 "unread" => $cv["counter"],
4443                                                                 "cat_id" => -2,
4444                                                         );
4445
4446                                                 array_push($feeds, $row);
4447                                         }
4448                                 }
4449                         }
4450
4451                         /* Virtual feeds */
4452
4453                         if ($cat_id == -4 || $cat_id == -1) {
4454                                 foreach (array(-1, -2, -3, -4, 0) as $i) {
4455                                         $unread = getFeedUnread($link, $i);
4456
4457                                         if ($unread || !$unread_only) {
4458                                                 $title = getFeedTitle($link, $i);
4459
4460                                                 $row = array(
4461                                                                 "id" => $i,
4462                                                                 "title" => $title,
4463                                                                 "unread" => $unread,
4464                                                                 "cat_id" => -1,
4465                                                         );
4466                                                 array_push($feeds, $row);
4467                                         }
4468
4469                                 }
4470                         }
4471
4472                         /* Real feeds */
4473
4474                         if ($limit) {
4475                                 $limit_qpart = "LIMIT $limit OFFSET $offset";
4476                         } else {
4477                                 $limit_qpart = "";
4478                         }
4479
4480                         if ($cat_id == -4 || $cat_id == -3) {
4481                                 $result = db_query($link, "SELECT
4482                                         id, feed_url, cat_id, title, order_id, ".
4483                                                 SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
4484                                                 FROM ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"] .
4485                                                 " ORDER BY cat_id, title " . $limit_qpart);
4486                         } else {
4487
4488                                 if ($cat_id)
4489                                         $cat_qpart = "cat_id = '$cat_id'";
4490                                 else
4491                                         $cat_qpart = "cat_id IS NULL";
4492
4493                                 $result = db_query($link, "SELECT
4494                                         id, feed_url, cat_id, title, order_id, ".
4495                                                 SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
4496                                                 FROM ttrss_feeds WHERE
4497                                                 $cat_qpart AND owner_uid = " . $_SESSION["uid"] .
4498                                                 " ORDER BY cat_id, title " . $limit_qpart);
4499                         }
4500
4501                         while ($line = db_fetch_assoc($result)) {
4502
4503                                 $unread = getFeedUnread($link, $line["id"]);
4504
4505                                 $has_icon = feed_has_icon($line['id']);
4506
4507                                 if ($unread || !$unread_only) {
4508
4509                                         $row = array(
4510                                                         "feed_url" => $line["feed_url"],
4511                                                         "title" => $line["title"],
4512                                                         "id" => (int)$line["id"],
4513                                                         "unread" => (int)$unread,
4514                                                         "has_icon" => $has_icon,
4515                                                         "cat_id" => (int)$line["cat_id"],
4516                                                         "last_updated" => strtotime($line["last_updated"]),
4517                                                         "order_id" => (int) $line["order_id"],
4518                                                 );
4519
4520                                         array_push($feeds, $row);
4521                                 }
4522                         }
4523
4524                 return $feeds;
4525         }
4526
4527         function api_get_headlines($link, $feed_id, $limit, $offset,
4528                                 $filter, $is_cat, $show_excerpt, $show_content, $view_mode, $order,
4529                                 $include_attachments, $since_id,
4530                                 $search = "", $search_mode = "", $match_on = "") {
4531
4532                         $qfh_ret = queryFeedHeadlines($link, $feed_id, $limit,
4533                                 $view_mode, $is_cat, $search, $search_mode, $match_on,
4534                                 $order, $offset, 0, false, $since_id);
4535
4536                         $result = $qfh_ret[0];
4537                         $feed_title = $qfh_ret[1];
4538
4539                         $headlines = array();
4540
4541                         while ($line = db_fetch_assoc($result)) {
4542                                 $is_updated = ($line["last_read"] == "" &&
4543                                         ($line["unread"] != "t" && $line["unread"] != "1"));
4544
4545                                 $tags = explode(",", $line["tag_cache"]);
4546                                 $labels = json_decode($line["label_cache"], true);
4547
4548                                 //if (!$tags) $tags = get_article_tags($link, $line["id"]);
4549                                 //if (!$labels) $labels = get_article_labels($link, $line["id"]);
4550
4551                                 $headline_row = array(
4552                                                 "id" => (int)$line["id"],
4553                                                 "unread" => sql_bool_to_bool($line["unread"]),
4554                                                 "marked" => sql_bool_to_bool($line["marked"]),
4555                                                 "published" => sql_bool_to_bool($line["published"]),
4556                                                 "updated" => strtotime($line["updated"]),
4557                                                 "is_updated" => $is_updated,
4558                                                 "title" => $line["title"],
4559                                                 "link" => $line["link"],
4560                                                 "feed_id" => $line["feed_id"],
4561                                                 "tags" => $tags,
4562                                         );
4563
4564                                         if ($include_attachments)
4565                                                 $headline_row['attachments'] = get_article_enclosures($link,
4566                                                         $line['id']);
4567
4568                                 if ($show_excerpt) {
4569                                         $excerpt = truncate_string(strip_tags($line["content_preview"]), 100);
4570                                         $headline_row["excerpt"] = $excerpt;
4571                                 }
4572
4573                                 if ($show_content) {
4574                                         $headline_row["content"] = $line["content_preview"];
4575                                 }
4576
4577                                 // unify label output to ease parsing
4578                                 if ($labels["no-labels"] == 1) $labels = array();
4579
4580                                 $headline_row["labels"] = $labels;
4581
4582                                 $headline_row["feed_title"] = $line["feed_title"];
4583
4584                                 array_push($headlines, $headline_row);
4585                         }
4586
4587                         return $headlines;
4588         }
4589
4590         function generate_error_feed($link, $error) {
4591                 $reply = array();
4592
4593                 $reply['headlines']['id'] = -6;
4594                 $reply['headlines']['is_cat'] = false;
4595
4596                 $reply['headlines']['toolbar'] = '';
4597                 $reply['headlines']['content'] = "<div class='whiteBox'>". $error . "</div>";
4598
4599                 $reply['headlines-info'] = array("count" => 0,
4600                         "vgroup_last_feed" => '',
4601                         "unread" => 0,
4602                         "disable_cache" => true);
4603
4604                 return $reply;
4605         }
4606
4607
4608         function generate_dashboard_feed($link) {
4609                 $reply = array();
4610
4611                 $reply['headlines']['id'] = -5;
4612                 $reply['headlines']['is_cat'] = false;
4613
4614                 $reply['headlines']['toolbar'] = '';
4615                 $reply['headlines']['content'] = "<div class='whiteBox'>".__('No feed selected.');
4616
4617                 $reply['headlines']['content'] .= "<p class=\"small\"><span class=\"insensitive\">";
4618
4619                 $result = db_query($link, "SELECT ".SUBSTRING_FOR_DATE."(MAX(last_updated), 1, 19) AS last_updated FROM ttrss_feeds
4620                         WHERE owner_uid = " . $_SESSION['uid']);
4621
4622                 $last_updated = db_fetch_result($result, 0, "last_updated");
4623                 $last_updated = make_local_datetime($link, $last_updated, false);
4624
4625                 $reply['headlines']['content'] .= sprintf(__("Feeds last updated at %s"), $last_updated);
4626
4627                 $result = db_query($link, "SELECT COUNT(id) AS num_errors
4628                         FROM ttrss_feeds WHERE last_error != '' AND owner_uid = ".$_SESSION["uid"]);
4629
4630                 $num_errors = db_fetch_result($result, 0, "num_errors");
4631
4632                 if ($num_errors > 0) {
4633                         $reply['headlines']['content'] .= "<br/>";
4634                         $reply['headlines']['content'] .= "<a class=\"insensitive\" href=\"#\" onclick=\"showFeedsWithErrors()\">".
4635                                 __('Some feeds have update errors (click for details)')."</a>";
4636                 }
4637                 $reply['headlines']['content'] .= "</span></p>";
4638
4639                 $reply['headlines-info'] = array("count" => 0,
4640                         "vgroup_last_feed" => '',
4641                         "unread" => 0,
4642                         "disable_cache" => true);
4643
4644                 return $reply;
4645         }
4646
4647         function save_email_address($link, $email) {
4648                 // FIXME: implement persistent storage of emails
4649
4650                 if (!$_SESSION['stored_emails'])
4651                         $_SESSION['stored_emails'] = array();
4652
4653                 if (!in_array($email, $_SESSION['stored_emails']))
4654                         array_push($_SESSION['stored_emails'], $email);
4655         }
4656
4657         function update_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
4658                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4659
4660                 $sql_is_cat = bool_to_sql_bool($is_cat);
4661
4662                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
4663                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
4664                         AND owner_uid = " . $owner_uid);
4665
4666                 if (db_num_rows($result) == 1) {
4667                         $key = db_escape_string(sha1(uniqid(rand(), true)));
4668
4669                         db_query($link, "UPDATE ttrss_access_keys SET access_key = '$key'
4670                                 WHERE feed_id = '$feed_id' AND is_cat = $sql_is_cat
4671                                 AND owner_uid = " . $owner_uid);
4672
4673                         return $key;
4674
4675                 } else {
4676                         return get_feed_access_key($link, $feed_id, $is_cat, $owner_uid);
4677                 }
4678         }
4679
4680         function get_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
4681
4682                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4683
4684                 $sql_is_cat = bool_to_sql_bool($is_cat);
4685
4686                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
4687                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
4688                         AND owner_uid = " . $owner_uid);
4689
4690                 if (db_num_rows($result) == 1) {
4691                         return db_fetch_result($result, 0, "access_key");
4692                 } else {
4693                         $key = db_escape_string(sha1(uniqid(rand(), true)));
4694
4695                         $result = db_query($link, "INSERT INTO ttrss_access_keys
4696                                 (access_key, feed_id, is_cat, owner_uid)
4697                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
4698
4699                         return $key;
4700                 }
4701                 return false;
4702         }
4703
4704         /**
4705          * Extracts RSS/Atom feed URLs from the given HTML URL.
4706          *
4707          * @param string $url HTML page URL
4708          *
4709          * @return array Array of feeds. Key is the full URL, value the title
4710          */
4711         function get_feeds_from_html($url, $login = false, $pass = false)
4712         {
4713                 $url     = fix_url($url);
4714                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
4715
4716                 libxml_use_internal_errors(true);
4717
4718                 $content = @fetch_file_contents($url, false, $login, $pass);
4719
4720                 $doc = new DOMDocument();
4721                 $doc->loadHTML($content);
4722                 $xpath = new DOMXPath($doc);
4723                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
4724                 $feedUrls = array();
4725                 foreach ($entries as $entry) {
4726                         if ($entry->hasAttribute('href')) {
4727                                 $title = $entry->getAttribute('title');
4728                                 if ($title == '') {
4729                                         $title = $entry->getAttribute('type');
4730                                 }
4731                                 $feedUrl = rewrite_relative_url(
4732                                         $baseUrl, $entry->getAttribute('href')
4733                                 );
4734                                 $feedUrls[$feedUrl] = $title;
4735                         }
4736                 }
4737                 return $feedUrls;
4738         }
4739
4740         /**
4741          * Checks if the content behind the given URL is a HTML file
4742          *
4743          * @param string $url URL to check
4744          *
4745          * @return boolean True if the URL contains HTML content
4746          */
4747         function url_is_html($url, $login = false, $pass = false) {
4748                 $content = substr(fetch_file_contents($url, false, $login, $pass), 0, 1000);
4749
4750                 if (stripos($content, '<html>') === false
4751                         && stripos($content, '<html ') === false
4752                 ) {
4753                         return false;
4754                 }
4755
4756                 return true;
4757         }
4758
4759         function print_label_select($link, $name, $value, $attributes = "") {
4760
4761                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
4762                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
4763
4764                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
4765                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
4766
4767                 while ($line = db_fetch_assoc($result)) {
4768
4769                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
4770
4771                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
4772                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
4773
4774                 }
4775
4776 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
4777
4778                 print "</select>";
4779
4780
4781         }
4782
4783         function format_article_enclosures($link, $id, $always_display_enclosures,
4784                                         $article_content) {
4785
4786                 $result = get_article_enclosures($link, $id);
4787                 $rv = '';
4788
4789                 if (count($result) > 0) {
4790
4791                         $entries_html = array();
4792                         $entries = array();
4793
4794                         foreach ($result as $line) {
4795
4796                                 $url = $line["content_url"];
4797                                 $ctype = $line["content_type"];
4798
4799                                 if (!$ctype) $ctype = __("unknown type");
4800
4801                                 $filename = substr($url, strrpos($url, "/")+1);
4802
4803 #                               $player = format_inline_player($link, $url, $ctype);
4804
4805 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
4806 #                                       $filename . " (" . $ctype . ")" . "</a>";
4807
4808                                 $entry = "<div onclick=\"window.open('".htmlspecialchars($url)."')\"
4809                                         dojoType=\"dijit.MenuItem\">$filename ($ctype)</div>";
4810
4811                                 array_push($entries_html, $entry);
4812
4813                                 $entry = array();
4814
4815                                 $entry["type"] = $ctype;
4816                                 $entry["filename"] = $filename;
4817                                 $entry["url"] = $url;
4818
4819                                 array_push($entries, $entry);
4820                         }
4821
4822                         if (!get_pref($link, "STRIP_IMAGES")) {
4823                                 if ($always_display_enclosures ||
4824                                                         !preg_match("/<img/i", $article_content)) {
4825
4826                                         foreach ($entries as $entry) {
4827
4828                                                 if (preg_match("/image/", $entry["type"]) ||
4829                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
4830
4831                                                                 $rv .= "<p><img
4832                                                                 alt=\"".htmlspecialchars($entry["filename"])."\"
4833                                                                 src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
4834
4835                                                 }
4836                                         }
4837                                 }
4838                         }
4839
4840                         $rv .= "<br/><div dojoType=\"dijit.form.DropDownButton\">".
4841                                 "<span>" . __('Attachments')."</span>";
4842                         $rv .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
4843
4844                         foreach ($entries_html as $entry) { $rv .= $entry; };
4845
4846                         $rv .= "</div></div>";
4847                 }
4848
4849                 return $rv;
4850         }
4851
4852         function getLastArticleId($link) {
4853                 $result = db_query($link, "SELECT MAX(ref_id) AS id FROM ttrss_user_entries
4854                         WHERE owner_uid = " . $_SESSION["uid"]);
4855
4856                 if (db_num_rows($result) == 1) {
4857                         return db_fetch_result($result, 0, "id");
4858                 } else {
4859                         return -1;
4860                 }
4861         }
4862
4863         function build_url($parts) {
4864                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
4865         }
4866
4867         /**
4868          * Converts a (possibly) relative URL to a absolute one.
4869          *
4870          * @param string $url     Base URL (i.e. from where the document is)
4871          * @param string $rel_url Possibly relative URL in the document
4872          *
4873          * @return string Absolute URL
4874          */
4875         function rewrite_relative_url($url, $rel_url) {
4876                 if (strpos($rel_url, "magnet:") === 0) {
4877                         return $rel_url;
4878                 } else if (strpos($rel_url, "://") !== false) {
4879                         return $rel_url;
4880                 } else if (strpos($rel_url, "//") === 0) {
4881                         # protocol-relative URL (rare but they exist)
4882                         return $rel_url;
4883                 } else if (strpos($rel_url, "/") === 0)
4884                 {
4885                         $parts = parse_url($url);
4886                         $parts['path'] = $rel_url;
4887
4888                         return build_url($parts);
4889
4890                 } else {
4891                         $parts = parse_url($url);
4892                         if (!isset($parts['path'])) {
4893                                 $parts['path'] = '/';
4894                         }
4895                         $dir = $parts['path'];
4896                         if (substr($dir, -1) !== '/') {
4897                                 $dir = dirname($parts['path']);
4898                                 $dir !== '/' && $dir .= '/';
4899                         }
4900                         $parts['path'] = $dir . $rel_url;
4901
4902                         return build_url($parts);
4903                 }
4904         }
4905
4906         function sphinx_search($query, $offset = 0, $limit = 30) {
4907                 require_once 'lib/sphinxapi.php';
4908
4909                 $sphinxClient = new SphinxClient();
4910
4911                 $sphinxClient->SetServer('localhost', 9312);
4912                 $sphinxClient->SetConnectTimeout(1);
4913
4914                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
4915                         'feed_title' => 20));
4916
4917                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
4918                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
4919                 $sphinxClient->SetLimits($offset, $limit, 1000);
4920                 $sphinxClient->SetArrayResult(false);
4921                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
4922
4923                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
4924
4925                 $ids = array();
4926
4927                 if (is_array($result['matches'])) {
4928                         foreach (array_keys($result['matches']) as $int_id) {
4929                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
4930                                 array_push($ids, $ref_id);
4931                         }
4932                 }
4933
4934                 return $ids;
4935         }
4936
4937         function cleanup_tags($link, $days = 14, $limit = 1000) {
4938
4939                 if (DB_TYPE == "pgsql") {
4940                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
4941                 } else if (DB_TYPE == "mysql") {
4942                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
4943                 }
4944
4945                 $tags_deleted = 0;
4946
4947                 while ($limit > 0) {
4948                         $limit_part = 500;
4949
4950                         $query = "SELECT ttrss_tags.id AS id
4951                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
4952                                 WHERE post_int_id = int_id AND $interval_query AND
4953                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
4954
4955                         $result = db_query($link, $query);
4956
4957                         $ids = array();
4958
4959                         while ($line = db_fetch_assoc($result)) {
4960                                 array_push($ids, $line['id']);
4961                         }
4962
4963                         if (count($ids) > 0) {
4964                                 $ids = join(",", $ids);
4965                                 print ".";
4966
4967                                 $tmp_result = db_query($link, "DELETE FROM ttrss_tags WHERE id IN ($ids)");
4968                                 $tags_deleted += db_affected_rows($link, $tmp_result);
4969                         } else {
4970                                 break;
4971                         }
4972
4973                         $limit -= $limit_part;
4974                 }
4975
4976                 print "\n";
4977
4978                 return $tags_deleted;
4979         }
4980
4981         function print_user_stylesheet($link) {
4982                 $value = get_pref($link, 'USER_STYLESHEET');
4983
4984                 if ($value) {
4985                         print "<style type=\"text/css\">";
4986                         print str_replace("<br/>", "\n", $value);
4987                         print "</style>";
4988                 }
4989
4990         }
4991
4992 /*      function rewrite_urls($line) {
4993                 global $url_regex;
4994
4995                 $urls = null;
4996
4997                 $result = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
4998                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $line);
4999
5000                 return $result;
5001         } */
5002
5003         function rewrite_urls($html) {
5004                 libxml_use_internal_errors(true);
5005
5006                 $charset_hack = '<head>
5007                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
5008                 </head>';
5009
5010                 $doc = new DOMDocument();
5011                 $doc->loadHTML($charset_hack . $html);
5012                 $xpath = new DOMXPath($doc);
5013
5014                 $entries = $xpath->query('//*/text()');
5015
5016                 foreach ($entries as $entry) {
5017                         if (strstr($entry->wholeText, "://") !== false) {
5018                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
5019                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
5020
5021                                 if ($text != $entry->wholeText) {
5022                                         $cdoc = new DOMDocument();
5023                                         $cdoc->loadHTML($charset_hack . $text);
5024
5025
5026                                         foreach ($cdoc->childNodes as $cnode) {
5027                                                 $cnode = $doc->importNode($cnode, true);
5028
5029                                                 if ($cnode) {
5030                                                         $entry->parentNode->insertBefore($cnode);
5031                                                 }
5032                                         }
5033
5034                                         $entry->parentNode->removeChild($entry);
5035
5036                                 }
5037                         }
5038                 }
5039
5040                 $node = $doc->getElementsByTagName('body')->item(0);
5041
5042                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
5043                 if ($node)
5044                         return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
5045                 else
5046                         return $html;
5047         }
5048
5049         function filter_to_sql($filter) {
5050                 $query = "";
5051
5052                 $regexp_valid = preg_match('/' . $filter['reg_exp'] . '/',
5053                         $filter['reg_exp']) !== FALSE;
5054
5055                 if ($regexp_valid) {
5056
5057                         if (DB_TYPE == "pgsql")
5058                                 $reg_qpart = "~";
5059                         else
5060                                 $reg_qpart = "REGEXP";
5061
5062                         switch ($filter["type"]) {
5063                                 case "title":
5064                                         $query = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
5065                                                 $filter['reg_exp'] . "')";
5066                                         break;
5067                                 case "content":
5068                                         $query = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
5069                                                 $filter['reg_exp'] . "')";
5070                                         break;
5071                                 case "both":
5072                                         $query = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
5073                                                 $filter['reg_exp'] . "') OR LOWER(" .
5074                                                 "ttrss_entries.content) $reg_qpart LOWER('" . $filter['reg_exp'] . "')";
5075                                         break;
5076                                 case "tag":
5077                                         $query = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
5078                                                 $filter['reg_exp'] . "')";
5079                                         break;
5080                                 case "link":
5081                                         $query = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
5082                                                 $filter['reg_exp'] . "')";
5083                                         break;
5084                                 case "date":
5085
5086                                         if ($filter["filter_param"] == "before")
5087                                                 $cmp_qpart = "<";
5088                                         else
5089                                                 $cmp_qpart = ">=";
5090
5091                                         $timestamp = date("Y-m-d H:N:s", strtotime($filter["reg_exp"]));
5092                                         $query = "ttrss_entries.date_entered $cmp_qpart '$timestamp'";
5093                                         break;
5094                                 case "author":
5095                                         $query = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
5096                                                 $filter['reg_exp'] . "')";
5097                                         break;
5098                         }
5099
5100                         if ($filter["inverse"])
5101                                 $query = "NOT ($query)";
5102
5103                         if ($query) {
5104                                 if (DB_TYPE == "pgsql") {
5105                                         $query = " ($query) AND ttrss_entries.date_entered > NOW() - INTERVAL '14 days'";
5106                                 } else {
5107                                         $query = " ($query) AND ttrss_entries.date_entered > DATE_SUB(NOW(), INTERVAL 14 DAY)";
5108                                 }
5109                                 $query .= " AND ";
5110                         }
5111
5112                         return $query;
5113                 } else {
5114                         return false;
5115                 }
5116         }
5117
5118         // Status codes:
5119         // -1  - never connected
5120         // 0   - no data received
5121         // 1   - data received successfully
5122         // 2   - did not receive valid data
5123         // >10 - server error, code + 10 (e.g. 16 means server error 6)
5124
5125         function get_linked_feeds($link, $instance_id = false) {
5126                 if ($instance_id)
5127                         $instance_qpart = "id = '$instance_id' AND ";
5128                 else
5129                         $instance_qpart = "";
5130
5131                 if (DB_TYPE == "pgsql") {
5132                         $date_qpart = "last_connected < NOW() - INTERVAL '6 hours'";
5133                 } else {
5134                         $date_qpart = "last_connected < DATE_SUB(NOW(), INTERVAL 6 HOUR)";
5135                 }
5136
5137                 $result = db_query($link, "SELECT id, access_key, access_url FROM ttrss_linked_instances
5138                         WHERE $instance_qpart $date_qpart ORDER BY last_connected");
5139
5140                 while ($line = db_fetch_assoc($result)) {
5141                         $id = $line['id'];
5142
5143                         _debug("Updating: " . $line['access_url'] . " ($id)");
5144
5145                         $fetch_url = $line['access_url'] . '/public.php?op=fbexport';
5146                         $post_query = 'key=' . $line['access_key'];
5147
5148                         $feeds = fetch_file_contents($fetch_url, false, false, false, $post_query);
5149
5150                         // try doing it the old way
5151                         if (!$feeds) {
5152                                 $fetch_url = $line['access_url'] . '/backend.php?op=fbexport';
5153                                 $feeds = fetch_file_contents($fetch_url, false, false, false, $post_query);
5154                         }
5155
5156                         if ($feeds) {
5157                                 $feeds = json_decode($feeds, true);
5158
5159                                 if ($feeds) {
5160                                         if ($feeds['error']) {
5161                                                 $status = $feeds['error']['code'] + 10;
5162                                         } else {
5163                                                 $status = 1;
5164
5165                                                 if (count($feeds['feeds']) > 0) {
5166
5167                                                         db_query($link, "DELETE FROM ttrss_linked_feeds
5168                                                                 WHERE instance_id = '$id'");
5169
5170                                                         foreach ($feeds['feeds'] as $feed) {
5171                                                                 $feed_url = db_escape_string($feed['feed_url']);
5172                                                                 $title = db_escape_string($feed['title']);
5173                                                                 $subscribers = db_escape_string($feed['subscribers']);
5174                                                                 $site_url = db_escape_string($feed['site_url']);
5175
5176                                                                 db_query($link, "INSERT INTO ttrss_linked_feeds
5177                                                                         (feed_url, site_url, title, subscribers, instance_id, created, updated)
5178                                                                 VALUES
5179                                                                         ('$feed_url', '$site_url', '$title', '$subscribers', '$id', NOW(), NOW())");
5180                                                         }
5181                                                 } else {
5182                                                         // received 0 feeds, this might indicate that
5183                                                         // the instance on the other hand is rebuilding feedbrowser cache
5184                                                         // we will try again later
5185
5186                                                         // TODO: maybe perform expiration based on updated here?
5187                                                 }
5188
5189                                                 _debug("Processed " . count($feeds['feeds']) . " feeds.");
5190                                         }
5191                                 } else {
5192                                         $status = 2;
5193                                 }
5194
5195                         } else {
5196                                 $status = 0;
5197                         }
5198
5199                         _debug("Status: $status");
5200
5201                         db_query($link, "UPDATE ttrss_linked_instances SET
5202                                 last_status_out = '$status', last_connected = NOW() WHERE id = '$id'");
5203
5204                 }
5205         }
5206
5207         function make_feed_browser($link, $search, $limit, $mode = 1) {
5208
5209                 $owner_uid = $_SESSION["uid"];
5210                 $rv = '';
5211
5212                 if ($search) {
5213                         $search_qpart = "AND (UPPER(feed_url) LIKE UPPER('%$search%') OR
5214                                                 UPPER(title) LIKE UPPER('%$search%'))";
5215                 } else {
5216                         $search_qpart = "";
5217                 }
5218
5219                 if ($mode == 1) {
5220                         /* $result = db_query($link, "SELECT feed_url, subscribers FROM
5221                          ttrss_feedbrowser_cache WHERE (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
5222                         WHERE tf.feed_url = ttrss_feedbrowser_cache.feed_url
5223                         AND owner_uid = '$owner_uid') $search_qpart
5224                         ORDER BY subscribers DESC LIMIT $limit"); */
5225
5226                         $result = db_query($link, "SELECT feed_url, site_url, title, SUM(subscribers) AS subscribers FROM
5227                                                 (SELECT feed_url, site_url, title, subscribers FROM ttrss_feedbrowser_cache UNION ALL
5228                                                         SELECT feed_url, site_url, title, subscribers FROM ttrss_linked_feeds) AS qqq
5229                                                 WHERE
5230                                                         (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
5231                                                                 WHERE tf.feed_url = qqq.feed_url
5232                                                                         AND owner_uid = '$owner_uid') $search_qpart
5233                                                 GROUP BY feed_url, site_url, title ORDER BY subscribers DESC LIMIT $limit");
5234
5235                 } else if ($mode == 2) {
5236                         $result = db_query($link, "SELECT *,
5237                                                 (SELECT COUNT(*) FROM ttrss_user_entries WHERE
5238                                                         orig_feed_id = ttrss_archived_feeds.id) AS articles_archived
5239                                                 FROM
5240                                                         ttrss_archived_feeds
5241                                                 WHERE
5242                                                 (SELECT COUNT(*) FROM ttrss_feeds
5243                                                         WHERE ttrss_feeds.feed_url = ttrss_archived_feeds.feed_url AND
5244                                                                 owner_uid = '$owner_uid') = 0   AND
5245                                                 owner_uid = '$owner_uid' $search_qpart
5246                                                 ORDER BY id DESC LIMIT $limit");
5247                 }
5248
5249                 $feedctr = 0;
5250
5251                 while ($line = db_fetch_assoc($result)) {
5252
5253                         if ($mode == 1) {
5254
5255                                 $feed_url = htmlspecialchars($line["feed_url"]);
5256                                 $site_url = htmlspecialchars($line["site_url"]);
5257                                 $subscribers = $line["subscribers"];
5258
5259                                 $check_box = "<input onclick='toggleSelectListRow2(this)'
5260                                                         dojoType=\"dijit.form.CheckBox\"
5261                                                         type=\"checkbox\" \">";
5262
5263                                 $class = ($feedctr % 2) ? "even" : "odd";
5264
5265                                 $site_url = "<a target=\"_blank\"
5266                                                         href=\"$site_url\">
5267                                                         <span class=\"fb_feedTitle\">".
5268                                 htmlspecialchars($line["title"])."</span></a>";
5269
5270                                 $feed_url = "<a target=\"_blank\" class=\"fb_feedUrl\"
5271                                                         href=\"$feed_url\"><img src='images/feed-icon-12x12.png'
5272                                                         style='vertical-align : middle'></a>";
5273
5274                                 $rv .= "<li>$check_box $feed_url $site_url".
5275                                                         "&nbsp;<span class='subscribers'>($subscribers)</span></li>";
5276
5277                         } else if ($mode == 2) {
5278                                 $feed_url = htmlspecialchars($line["feed_url"]);
5279                                 $site_url = htmlspecialchars($line["site_url"]);
5280                                 $title = htmlspecialchars($line["title"]);
5281
5282                                 $check_box = "<input onclick='toggleSelectListRow2(this)' dojoType=\"dijit.form.CheckBox\"
5283                                                         type=\"checkbox\">";
5284
5285                                 $class = ($feedctr % 2) ? "even" : "odd";
5286
5287                                 if ($line['articles_archived'] > 0) {
5288                                         $archived = sprintf(__("%d archived articles"), $line['articles_archived']);
5289                                         $archived = "&nbsp;<span class='subscribers'>($archived)</span>";
5290                                 } else {
5291                                         $archived = '';
5292                                 }
5293
5294                                 $site_url = "<a target=\"_blank\"
5295                                                         href=\"$site_url\">
5296                                                         <span class=\"fb_feedTitle\">".
5297                                 htmlspecialchars($line["title"])."</span></a>";
5298
5299                                 $feed_url = "<a target=\"_blank\" class=\"fb_feedUrl\"
5300                                                         href=\"$feed_url\"><img src='images/feed-icon-12x12.png'
5301                                                         style='vertical-align : middle'></a>";
5302
5303
5304                                 $rv .= "<li id=\"FBROW-".$line["id"]."\">".
5305                                                         "$check_box $feed_url $site_url $archived</li>";
5306                         }
5307
5308                         ++$feedctr;
5309                 }
5310
5311                 if ($feedctr == 0) {
5312                         $rv .= "<li style=\"text-align : center\"><p>".__('No feeds found.')."</p></li>";
5313                 }
5314
5315                 return $rv;
5316         }
5317
5318         if (!function_exists('gzdecode')) {
5319                 function gzdecode($string) { // no support for 2nd argument
5320                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
5321                                 base64_encode($string));
5322                 }
5323         }
5324
5325         function perform_data_import($link, $filename, $owner_uid) {
5326
5327                 $num_imported = 0;
5328                 $num_processed = 0;
5329                 $num_feeds_created = 0;
5330
5331                 $doc = @DOMDocument::load($filename);
5332
5333                 if (!$doc) {
5334                         $contents = file_get_contents($filename);
5335
5336                         if ($contents) {
5337                                 $data = @gzuncompress($contents);
5338                         }
5339
5340                         if (!$data) {
5341                                 $data = @gzdecode($contents);
5342                         }
5343
5344                         if ($data)
5345                                 $doc = DOMDocument::loadXML($data);
5346                 }
5347
5348                 if ($doc) {
5349
5350                         $xpath = new DOMXpath($doc);
5351
5352                         $container = $doc->firstChild;
5353
5354                         if ($container && $container->hasAttribute('schema-version')) {
5355                                 $schema_version = $container->getAttribute('schema-version');
5356
5357                                 if ($schema_version != SCHEMA_VERSION) {
5358                                         print "<p>" .__("Could not import: incorrect schema version.") . "</p>";
5359                                         return;
5360                                 }
5361
5362                         } else {
5363                                 print "<p>" . __("Could not import: unrecognized document format.") . "</p>";
5364                                 return;
5365                         }
5366
5367                         $articles = $xpath->query("//article");
5368
5369                         foreach ($articles as $article_node) {
5370                                 if ($article_node->childNodes) {
5371
5372                                         $ref_id = 0;
5373
5374                                         $article = array();
5375
5376                                         foreach ($article_node->childNodes as $child) {
5377                                                 if ($child->nodeName != 'label_cache')
5378                                                         $article[$child->nodeName] = db_escape_string($child->nodeValue);
5379                                                 else
5380                                                         $article[$child->nodeName] = $child->nodeValue;
5381                                         }
5382
5383                                         //print_r($article);
5384
5385                                         if ($article['guid']) {
5386
5387                                                 ++$num_processed;
5388
5389                                                 //db_query($link, "BEGIN");
5390
5391                                                 //print 'GUID:' . $article['guid'] . "\n";
5392
5393                                                 $result = db_query($link, "SELECT id FROM ttrss_entries
5394                                                         WHERE guid = '".$article['guid']."'");
5395
5396                                                 if (db_num_rows($result) == 0) {
5397
5398                                                         $result = db_query($link,
5399                                                                 "INSERT INTO ttrss_entries
5400                                                                         (title,
5401                                                                         guid,
5402                                                                         link,
5403                                                                         updated,
5404                                                                         content,
5405                                                                         content_hash,
5406                                                                         no_orig_date,
5407                                                                         date_updated,
5408                                                                         date_entered,
5409                                                                         comments,
5410                                                                         num_comments,
5411                                                                         author)
5412                                                                 VALUES
5413                                                                         ('".$article['title']."',
5414                                                                         '".$article['guid']."',
5415                                                                         '".$article['link']."',
5416                                                                         '".$article['updated']."',
5417                                                                         '".$article['content']."',
5418                                                                         '".sha1($article['content'])."',
5419                                                                         false,
5420                                                                         NOW(),
5421                                                                         NOW(),
5422                                                                         '',
5423                                                                         '0',
5424                                                                         '')");
5425
5426                                                         $result = db_query($link, "SELECT id FROM ttrss_entries
5427                                                                 WHERE guid = '".$article['guid']."'");
5428
5429                                                         if (db_num_rows($result) != 0) {
5430                                                                 $ref_id = db_fetch_result($result, 0, "id");
5431                                                         }
5432
5433                                                 } else {
5434                                                         $ref_id = db_fetch_result($result, 0, "id");
5435                                                 }
5436
5437                                                 //print "Got ref ID: $ref_id\n";
5438
5439                                                 if ($ref_id) {
5440
5441                                                         $feed_url = $article['feed_url'];
5442                                                         $feed_title = $article['feed_title'];
5443
5444                                                         $feed = 'NULL';
5445
5446                                                         if ($feed_url && $feed_title) {
5447                                                                 $result = db_query($link, "SELECT id FROM ttrss_feeds
5448                                                                         WHERE feed_url = '$feed_url' AND owner_uid = '$owner_uid'");
5449
5450                                                                 if (db_num_rows($result) != 0) {
5451                                                                         $feed = db_fetch_result($result, 0, "id");
5452                                                                 } else {
5453                                                                         // try autocreating feed in Uncategorized...
5454
5455                                                                         $result = db_query($link, "INSERT INTO ttrss_feeds (owner_uid,
5456                                                                                 feed_url, title) VALUES ($owner_uid, '$feed_url', '$feed_title')");
5457
5458                                                                         $result = db_query($link, "SELECT id FROM ttrss_feeds
5459                                                                                 WHERE feed_url = '$feed_url' AND owner_uid = '$owner_uid'");
5460
5461                                                                         if (db_num_rows($result) != 0) {
5462                                                                                 ++$num_feeds_created;
5463
5464                                                                                 $feed = db_fetch_result($result, 0, "id");
5465                                                                         }
5466                                                                 }
5467                                                         }
5468
5469                                                         if ($feed != 'NULL')
5470                                                                 $feed_qpart = "feed_id = $feed";
5471                                                         else
5472                                                                 $feed_qpart = "feed_id IS NULL";
5473
5474                                                         //print "$ref_id / $feed / " . $article['title'] . "\n";
5475
5476                                                         $result = db_query($link, "SELECT int_id FROM ttrss_user_entries
5477                                                                 WHERE ref_id = '$ref_id' AND owner_uid = '$owner_uid' AND $feed_qpart");
5478
5479                                                         if (db_num_rows($result) == 0) {
5480
5481                                                                 $marked = bool_to_sql_bool(sql_bool_to_bool($article['marked']));
5482                                                                 $published = bool_to_sql_bool(sql_bool_to_bool($article['published']));
5483                                                                 $score = (int) $article['score'];
5484
5485                                                                 $tag_cache = $article['tag_cache'];
5486                                                                 $label_cache = db_escape_string($article['label_cache']);
5487                                                                 $note = $article['note'];
5488
5489                                                                 //print "Importing " . $article['title'] . "<br/>";
5490
5491                                                                 ++$num_imported;
5492
5493                                                                 $result = db_query($link,
5494                                                                         "INSERT INTO ttrss_user_entries
5495                                                                         (ref_id, owner_uid, feed_id, unread, last_read, marked,
5496                                                                                 published, score, tag_cache, label_cache, uuid, note)
5497                                                                         VALUES ($ref_id, $owner_uid, $feed, false,
5498                                                                                 NULL, $marked, $published, $score, '$tag_cache',
5499                                                                                         '$label_cache', '', '$note')");
5500
5501                                                                 $label_cache = json_decode($label_cache, true);
5502
5503                                                                 if (is_array($label_cache) && $label_cache["no-labels"] != 1) {
5504                                                                         foreach ($label_cache as $label) {
5505
5506                                                                                 label_create($link, $label[1],
5507                                                                                         $label[2], $label[3], $owner_uid);
5508
5509                                                                                 label_add_article($link, $ref_id, $label[1], $owner_uid);
5510
5511                                                                         }
5512                                                                 }
5513
5514                                                                 //db_query($link, "COMMIT");
5515                                                         }
5516                                                 }
5517                                         }
5518                                 }
5519                         }
5520
5521                         print "<p>" .
5522                                 T_sprintf("Finished: %d articles processed, %d imported, %d feeds created.",
5523                                         $num_processed, $num_imported, $num_feeds_created) .
5524                                         "</p>";
5525
5526                 } else {
5527
5528                         print "<p>" . __("Could not load XML document.") . "</p>";
5529
5530                 }
5531         }
5532
5533         function get_random_bytes($length) {
5534                 if (function_exists('openssl_random_pseudo_bytes')) {
5535                         return openssl_random_pseudo_bytes($length);
5536                 } else {
5537                         $output = "";
5538
5539                         for ($i = 0; $i < $length; $i++)
5540                                 $output .= chr(mt_rand(0, 255));
5541
5542                         return $output;
5543                 }
5544         }
5545
5546         function read_stdin() {
5547                 $fp = fopen("php://stdin", "r");
5548
5549                 if ($fp) {
5550                         $line = trim(fgets($fp));
5551                         fclose($fp);
5552                         return $line;
5553                 }
5554
5555                 return null;
5556         }
5557
5558         function tmpdirname($path, $prefix) {
5559                 // Use PHP's tmpfile function to create a temporary
5560                 // directory name. Delete the file and keep the name.
5561                 $tempname = tempnam($path,$prefix);
5562                 if (!$tempname)
5563                         return false;
5564
5565                 if (!unlink($tempname))
5566                         return false;
5567
5568        return $tempname;
5569         }
5570
5571         function getFeedCategory($link, $feed) {
5572                 $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
5573                         WHERE id = '$feed'");
5574
5575                 if (db_num_rows($result) > 0) {
5576                         return db_fetch_result($result, 0, "cat_id");
5577                 } else {
5578                         return false;
5579                 }
5580
5581         }
5582
5583 ?>