include/functions.php

   1 <?php
   2         define('EXPECTED_CONFIG_VERSION', 26);
   3         define('SCHEMA_VERSION', 97);
   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                 $update_method = 0;
1784
1785                 if (!fetch_file_contents($url, false, $auth_login, $auth_pass))
1786                         return array("code" => 5, "message" => $fetch_last_error);
1787
1788                 if (url_is_html($url, $auth_login, $auth_pass)) {
1789                         $feedUrls = get_feeds_from_html($url, $auth_login, $auth_pass);
1790                         if (count($feedUrls) == 0) {
1791                                 return array("code" => 3);
1792                         } else if (count($feedUrls) > 1) {
1793                                 return array("code" => 4);
1794                         }
1795                         //use feed url as new URL
1796                         $url = key($feedUrls);
1797                 }
1798
1799                 if ($cat_id == "0" || !$cat_id) {
1800                         $cat_qpart = "NULL";
1801                 } else {
1802                         $cat_qpart = "'$cat_id'";
1803                 }
1804
1805                 $result = db_query($link,
1806                         "SELECT id FROM ttrss_feeds
1807                         WHERE feed_url = '$url' AND owner_uid = ".$_SESSION["uid"]);
1808
1809                 if (db_num_rows($result) == 0) {
1810                         $result = db_query($link,
1811                                 "INSERT INTO ttrss_feeds
1812                                         (owner_uid,feed_url,title,cat_id, auth_login,auth_pass,update_method)
1813                                 VALUES ('".$_SESSION["uid"]."', '$url',
1814                                 '[Unknown]', $cat_qpart, '$auth_login', '$auth_pass', '$update_method')");
1815
1816                         $result = db_query($link,
1817                                 "SELECT id FROM ttrss_feeds WHERE feed_url = '$url'
1818                                         AND owner_uid = " . $_SESSION["uid"]);
1819
1820                         $feed_id = db_fetch_result($result, 0, "id");
1821
1822                         if ($feed_id) {
1823                                 update_rss_feed($link, $feed_id, true);
1824                         }
1825
1826                         return array("code" => 1);
1827                 } else {
1828                         return array("code" => 0);
1829                 }
1830         }
1831
1832         function print_feed_select($link, $id, $default_id = "",
1833                 $attributes = "", $include_all_feeds = true,
1834                 $root_id = false, $nest_level = 0) {
1835
1836                 if (!$root_id) {
1837                         print "<select id=\"$id\" name=\"$id\" $attributes>";
1838                         if ($include_all_feeds) {
1839                                 $is_selected = ("0" == $default_id) ? "selected=\"1\"" : "";
1840                                 print "<option $is_selected value=\"0\">".__('All feeds')."</option>";
1841                         }
1842                 }
1843
1844                 if (get_pref($link, 'ENABLE_FEED_CATS')) {
1845
1846                         if ($root_id)
1847                                 $parent_qpart = "parent_cat = '$root_id'";
1848                         else
1849                                 $parent_qpart = "parent_cat IS NULL";
1850
1851                         $result = db_query($link, "SELECT id,title,
1852                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1853                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1854                                 FROM ttrss_feed_categories
1855                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1856
1857                         while ($line = db_fetch_assoc($result)) {
1858
1859                                 for ($i = 0; $i < $nest_level; $i++)
1860                                         $line["title"] = " - " . $line["title"];
1861
1862                                 $is_selected = ("CAT:".$line["id"] == $default_id) ? "selected=\"1\"" : "";
1863
1864                                 printf("<option $is_selected value='CAT:%d'>%s</option>",
1865                                         $line["id"], htmlspecialchars($line["title"]));
1866
1867                                 if ($line["num_children"] > 0)
1868                                         print_feed_select($link, $id, $default_id, $attributes,
1869                                                 $include_all_feeds, $line["id"], $nest_level+1);
1870
1871                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1872                                         WHERE cat_id = '".$line["id"]."' AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1873
1874                                 while ($fline = db_fetch_assoc($feed_result)) {
1875                                         $is_selected = ($fline["id"] == $default_id) ? "selected=\"1\"" : "";
1876
1877                                         $fline["title"] = " + " . $fline["title"];
1878
1879                                         for ($i = 0; $i < $nest_level; $i++)
1880                                                 $fline["title"] = " - " . $fline["title"];
1881
1882                                         printf("<option $is_selected value='%d'>%s</option>",
1883                                                 $fline["id"], htmlspecialchars($fline["title"]));
1884                                 }
1885                         }
1886
1887                         if (!$root_id) {
1888                                 $is_selected = ($default_id == "CAT:0") ? "selected=\"1\"" : "";
1889
1890                                 printf("<option $is_selected value='CAT:0'>%s</option>",
1891                                         __("Uncategorized"));
1892
1893                                 $feed_result = db_query($link, "SELECT id,title FROM ttrss_feeds
1894                                         WHERE cat_id IS NULL AND owner_uid = ".$_SESSION["uid"] . " ORDER BY title");
1895
1896                                 while ($fline = db_fetch_assoc($feed_result)) {
1897                                         $is_selected = ($fline["id"] == $default_id && !$default_is_cat) ? "selected=\"1\"" : "";
1898
1899                                         $fline["title"] = " + " . $fline["title"];
1900
1901                                         for ($i = 0; $i < $nest_level; $i++)
1902                                                 $fline["title"] = " - " . $fline["title"];
1903
1904                                         printf("<option $is_selected value='%d'>%s</option>",
1905                                                 $fline["id"], htmlspecialchars($fline["title"]));
1906                                 }
1907                         }
1908
1909                 } else {
1910                         $result = db_query($link, "SELECT id,title FROM ttrss_feeds
1911                                 WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
1912
1913                         while ($line = db_fetch_assoc($result)) {
1914
1915                                 $is_selected = ($line["id"] == $default_id) ? "selected=\"1\"" : "";
1916
1917                                 printf("<option $is_selected value='%d'>%s</option>",
1918                                         $line["id"], htmlspecialchars($line["title"]));
1919                         }
1920                 }
1921
1922                 if (!$root_id) {
1923                         print "</select>";
1924                 }
1925         }
1926
1927         function print_feed_cat_select($link, $id, $default_id,
1928                 $attributes, $include_all_cats = true, $root_id = false, $nest_level = 0) {
1929
1930                         if (!$root_id) {
1931                                         print "<select id=\"$id\" name=\"$id\" default=\"$default_id\" onchange=\"catSelectOnChange(this)\" $attributes>";
1932                         }
1933
1934                         if ($root_id)
1935                                 $parent_qpart = "parent_cat = '$root_id'";
1936                         else
1937                                 $parent_qpart = "parent_cat IS NULL";
1938
1939                         $result = db_query($link, "SELECT id,title,
1940                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
1941                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
1942                                 FROM ttrss_feed_categories
1943                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
1944
1945                         while ($line = db_fetch_assoc($result)) {
1946                                 if ($line["id"] == $default_id) {
1947                                         $is_selected = "selected=\"1\"";
1948                                 } else {
1949                                         $is_selected = "";
1950                                 }
1951
1952                                 for ($i = 0; $i < $nest_level; $i++)
1953                                         $line["title"] = " - " . $line["title"];
1954
1955                                 if ($line["title"])
1956                                         printf("<option $is_selected value='%d'>%s</option>",
1957                                                 $line["id"], htmlspecialchars($line["title"]));
1958
1959                                 if ($line["num_children"] > 0)
1960                                         print_feed_cat_select($link, $id, $default_id, $attributes,
1961                                                 $include_all_cats, $line["id"], $nest_level+1);
1962                         }
1963
1964                         if (!$root_id) {
1965                                 if ($include_all_cats) {
1966                                         if (db_num_rows($result) > 0) {
1967                                                 print "<option disabled=\"1\">--------</option>";
1968                                         }
1969
1970                                         if ($default_id == 0) {
1971                                                 $is_selected = "selected=\"1\"";
1972                                         } else {
1973                                                 $is_selected = "";
1974                                         }
1975
1976                                         print "<option $is_selected value=\"0\">".__('Uncategorized')."</option>";
1977                                 }
1978                                 print "</select>";
1979                         }
1980                 }
1981
1982         function checkbox_to_sql_bool($val) {
1983                 return ($val == "on") ? "true" : "false";
1984         }
1985
1986         function getFeedCatTitle($link, $id) {
1987                 if ($id == -1) {
1988                         return __("Special");
1989                 } else if ($id < -10) {
1990                         return __("Labels");
1991                 } else if ($id > 0) {
1992                         $result = db_query($link, "SELECT ttrss_feed_categories.title
1993                                 FROM ttrss_feeds, ttrss_feed_categories WHERE ttrss_feeds.id = '$id' AND
1994                                         cat_id = ttrss_feed_categories.id");
1995                         if (db_num_rows($result) == 1) {
1996                                 return db_fetch_result($result, 0, "title");
1997                         } else {
1998                                 return __("Uncategorized");
1999                         }
2000                 } else {
2001                         return "getFeedCatTitle($id) failed";
2002                 }
2003
2004         }
2005
2006         function getFeedIcon($id) {
2007                 switch ($id) {
2008                 case 0:
2009                         return "images/archive.png";
2010                         break;
2011                 case -1:
2012                         return "images/mark_set.png";
2013                         break;
2014                 case -2:
2015                         return "images/pub_set.png";
2016                         break;
2017                 case -3:
2018                         return "images/fresh.png";
2019                         break;
2020                 case -4:
2021                         return "images/tag.png";
2022                         break;
2023                 case -6:
2024                         return "images/recently_read.png";
2025                         break;
2026                 default:
2027                         if ($id < -10) {
2028                                 return "images/label.png";
2029                         } else {
2030                                 if (file_exists(ICONS_DIR . "/$id.ico"))
2031                                         return ICONS_URL . "/$id.ico";
2032                         }
2033                         break;
2034                 }
2035         }
2036
2037         function getFeedTitle($link, $id, $cat = false) {
2038                 if ($cat) {
2039                         return getCategoryTitle($link, $id);
2040                 } else if ($id == -1) {
2041                         return __("Starred articles");
2042                 } else if ($id == -2) {
2043                         return __("Published articles");
2044                 } else if ($id == -3) {
2045                         return __("Fresh articles");
2046                 } else if ($id == -4) {
2047                         return __("All articles");
2048                 } else if ($id === 0 || $id === "0") {
2049                         return __("Archived articles");
2050                 } else if ($id == -6) {
2051                         return __("Recently read");
2052                 } else if ($id < -10) {
2053                         $label_id = -$id - 11;
2054                         $result = db_query($link, "SELECT caption FROM ttrss_labels2 WHERE id = '$label_id'");
2055                         if (db_num_rows($result) == 1) {
2056                                 return db_fetch_result($result, 0, "caption");
2057                         } else {
2058                                 return "Unknown label ($label_id)";
2059                         }
2060
2061                 } else if (is_numeric($id) && $id > 0) {
2062                         $result = db_query($link, "SELECT title FROM ttrss_feeds WHERE id = '$id'");
2063                         if (db_num_rows($result) == 1) {
2064                                 return db_fetch_result($result, 0, "title");
2065                         } else {
2066                                 return "Unknown feed ($id)";
2067                         }
2068                 } else {
2069                         return $id;
2070                 }
2071         }
2072
2073         function make_init_params($link) {
2074                 $params = array();
2075
2076                 $params["theme"] = get_user_theme($link);
2077                 $params["theme_options"] = get_user_theme_options($link);
2078
2079                 $params["sign_progress"] = theme_image($link, "images/indicator_white.gif");
2080                 $params["sign_progress_tiny"] = theme_image($link, "images/indicator_tiny.gif");
2081                 $params["sign_excl"] = theme_image($link, "images/sign_excl.png");
2082                 $params["sign_info"] = theme_image($link, "images/sign_info.png");
2083
2084                 foreach (array("ON_CATCHUP_SHOW_NEXT_FEED", "HIDE_READ_FEEDS",
2085                         "ENABLE_FEED_CATS", "FEEDS_SORT_BY_UNREAD", "CONFIRM_FEED_CATCHUP",
2086                         "CDM_AUTO_CATCHUP", "FRESH_ARTICLE_MAX_AGE", "DEFAULT_ARTICLE_LIMIT",
2087                         "HIDE_READ_SHOWS_SPECIAL", "COMBINED_DISPLAY_MODE") as $param) {
2088
2089                                  $params[strtolower($param)] = (int) get_pref($link, $param);
2090                  }
2091
2092                 $params["icons_url"] = ICONS_URL;
2093                 $params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
2094                 $params["default_include_children"] = get_pref($link, "_DEFAULT_INCLUDE_CHILDREN");
2095                 $params["default_view_mode"] = get_pref($link, "_DEFAULT_VIEW_MODE");
2096                 $params["default_view_limit"] = (int) get_pref($link, "_DEFAULT_VIEW_LIMIT");
2097                 $params["default_view_order_by"] = get_pref($link, "_DEFAULT_VIEW_ORDER_BY");
2098                 $params["bw_limit"] = (int) $_SESSION["bw_limit"];
2099
2100                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2101                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2102
2103                 $max_feed_id = db_fetch_result($result, 0, "mid");
2104                 $num_feeds = db_fetch_result($result, 0, "nf");
2105
2106                 $params["max_feed_id"] = (int) $max_feed_id;
2107                 $params["num_feeds"] = (int) $num_feeds;
2108
2109                 $params["collapsed_feedlist"] = (int) get_pref($link, "_COLLAPSED_FEEDLIST");
2110
2111                 $params["csrf_token"] = $_SESSION["csrf_token"];
2112
2113                 return $params;
2114         }
2115
2116         function make_runtime_info($link) {
2117                 $data = array();
2118
2119                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2120                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2121
2122                 $max_feed_id = db_fetch_result($result, 0, "mid");
2123                 $num_feeds = db_fetch_result($result, 0, "nf");
2124
2125                 $data["max_feed_id"] = (int) $max_feed_id;
2126                 $data["num_feeds"] = (int) $num_feeds;
2127
2128                 $data['last_article_id'] = getLastArticleId($link);
2129                 $data['cdm_expanded'] = get_pref($link, 'CDM_EXPANDED');
2130
2131                 if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
2132
2133                         $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
2134
2135                         if (time() - $_SESSION["daemon_stamp_check"] > 30) {
2136
2137                                 $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
2138
2139                                 if ($stamp) {
2140                                         $stamp_delta = time() - $stamp;
2141
2142                                         if ($stamp_delta > 1800) {
2143                                                 $stamp_check = 0;
2144                                         } else {
2145                                                 $stamp_check = 1;
2146                                                 $_SESSION["daemon_stamp_check"] = time();
2147                                         }
2148
2149                                         $data['daemon_stamp_ok'] = $stamp_check;
2150
2151                                         $stamp_fmt = date("Y.m.d, G:i", $stamp);
2152
2153                                         $data['daemon_stamp'] = $stamp_fmt;
2154                                 }
2155                         }
2156                 }
2157
2158                 if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
2159                                 $new_version_details = @check_for_update($link);
2160
2161                                 $data['new_version_available'] = (int) ($new_version_details != false);
2162
2163                                 $_SESSION["last_version_check"] = time();
2164                                 $_SESSION["version_data"] = $new_version_details;
2165                 }
2166
2167                 return $data;
2168         }
2169
2170         function search_to_sql($link, $search, $match_on) {
2171
2172                 $search_query_part = "";
2173
2174                 $keywords = explode(" ", $search);
2175                 $query_keywords = array();
2176
2177                 foreach ($keywords as $k) {
2178                         if (strpos($k, "-") === 0) {
2179                                 $k = substr($k, 1);
2180                                 $not = "NOT";
2181                         } else {
2182                                 $not = "";
2183                         }
2184
2185                         $commandpair = explode(":", mb_strtolower($k), 2);
2186
2187                         if ($commandpair[0] == "note" && $commandpair[1]) {
2188
2189                                 if ($commandpair[1] == "true")
2190                                         array_push($query_keywords, "($not (note IS NOT NULL AND note != ''))");
2191                                 else
2192                                         array_push($query_keywords, "($not (note IS NULL OR note = ''))");
2193
2194                         } else if ($commandpair[0] == "star" && $commandpair[1]) {
2195
2196                                 if ($commandpair[1] == "true")
2197                                         array_push($query_keywords, "($not (marked = true))");
2198                                 else
2199                                         array_push($query_keywords, "($not (marked = false))");
2200
2201                         } else if ($commandpair[0] == "pub" && $commandpair[1]) {
2202
2203                                 if ($commandpair[1] == "true")
2204                                         array_push($query_keywords, "($not (published = true))");
2205                                 else
2206                                         array_push($query_keywords, "($not (published = false))");
2207
2208                         } else if (strpos($k, "@") === 0) {
2209
2210                                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $_SESSION['uid']);
2211                                 $orig_ts = strtotime(substr($k, 1));
2212                                 $k = date("Y-m-d", convert_timestamp($orig_ts, $user_tz_string, 'UTC'));
2213
2214                                 //$k = date("Y-m-d", strtotime(substr($k, 1)));
2215
2216                                 array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
2217                         } else if ($match_on == "both") {
2218                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2219                                                 OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2220                         } else if ($match_on == "title") {
2221                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%'))");
2222                         } else if ($match_on == "content") {
2223                                 array_push($query_keywords, "(UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2224                         }
2225                 }
2226
2227                 $search_query_part = implode("AND", $query_keywords);
2228
2229                 return $search_query_part;
2230         }
2231
2232         function getChildCategories($link, $cat, $owner_uid) {
2233                 $rv = array();
2234
2235                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories
2236                         WHERE parent_cat = '$cat' AND owner_uid = $owner_uid");
2237
2238                 while ($line = db_fetch_assoc($result)) {
2239                         array_push($rv, $line["id"]);
2240                         $rv = array_merge($rv, getChildCategories($link, $line["id"], $owner_uid));
2241                 }
2242
2243                 return $rv;
2244         }
2245
2246         function queryFeedHeadlines($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, $include_children = false) {
2247
2248                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2249
2250                 $ext_tables_part = "";
2251
2252                         if ($search) {
2253
2254                                 if (SPHINX_ENABLED) {
2255                                         $ids = join(",", @sphinx_search($search, 0, 500));
2256
2257                                         if ($ids)
2258                                                 $search_query_part = "ref_id IN ($ids) AND ";
2259                                         else
2260                                                 $search_query_part = "ref_id = -1 AND ";
2261
2262                                 } else {
2263                                         $search_query_part = search_to_sql($link, $search, $match_on);
2264                                         $search_query_part .= " AND ";
2265                                 }
2266
2267                         } else {
2268                                 $search_query_part = "";
2269                         }
2270
2271                         if ($filter) {
2272
2273                                 if (DB_TYPE == "pgsql") {
2274                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '14 days' ";
2275                                 } else {
2276                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL 14 DAY) ";
2277                                 }
2278
2279                                 $override_order = "updated DESC";
2280
2281                                 $filter_query_part = filter_to_sql($filter) . " AND";
2282                         } else {
2283                                 $filter_query_part = "";
2284                         }
2285
2286                         if ($since_id) {
2287                                 $since_id_part = "ttrss_entries.id > $since_id AND ";
2288                         } else {
2289                                 $since_id_part = "";
2290                         }
2291
2292                         $view_query_part = "";
2293
2294                         if ($view_mode == "adaptive" || $view_query_part == "noscores") {
2295                                 if ($search) {
2296                                         $view_query_part = " ";
2297                                 } else if ($feed != -1) {
2298                                         $unread = getFeedUnread($link, $feed, $cat_view);
2299
2300                                         if ($cat_view && $feed > 0 && $include_children)
2301                                                 $unread += getCategoryChildrenUnread($link, $feed);
2302
2303                                         if ($unread > 0) {
2304                                                 $view_query_part = " unread = true AND ";
2305                                         }
2306                                 }
2307                         }
2308
2309                         if ($view_mode == "marked") {
2310                                 $view_query_part = " marked = true AND ";
2311                         }
2312
2313                         if ($view_mode == "published") {
2314                                 $view_query_part = " published = true AND ";
2315                         }
2316
2317                         if ($view_mode == "unread") {
2318                                 $view_query_part = " unread = true AND ";
2319                         }
2320
2321                         if ($view_mode == "updated") {
2322                                 $view_query_part = " (last_read is null and unread = false) AND ";
2323                         }
2324
2325                         if ($limit > 0) {
2326                                 $limit_query_part = "LIMIT " . $limit;
2327                         }
2328
2329                         $vfeed_query_part = "";
2330
2331                         // override query strategy and enable feed display when searching globally
2332                         if ($search && $search_mode == "all_feeds") {
2333                                 $query_strategy_part = "ttrss_entries.id > 0";
2334                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2335                         /* tags */
2336                         } else if (!is_numeric($feed)) {
2337                                 $query_strategy_part = "ttrss_entries.id > 0";
2338                                 $vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
2339                                         id = feed_id) as feed_title,";
2340                         } else if ($feed > 0 && $search && $search_mode == "this_cat") {
2341
2342                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2343
2344                                 $tmp_result = false;
2345
2346                                 if ($cat_view) {
2347                                         $tmp_result = db_query($link, "SELECT id
2348                                                 FROM ttrss_feeds WHERE cat_id = '$feed'");
2349                                 } else {
2350                                         $tmp_result = db_query($link, "SELECT id
2351                                                 FROM ttrss_feeds WHERE cat_id = (SELECT cat_id FROM ttrss_feeds
2352                                                         WHERE id = '$feed') AND id != '$feed'");
2353                                 }
2354
2355                                 $cat_siblings = array();
2356
2357                                 if (db_num_rows($tmp_result) > 0) {
2358                                         while ($p = db_fetch_assoc($tmp_result)) {
2359                                                 array_push($cat_siblings, "feed_id = " . $p["id"]);
2360                                         }
2361
2362                                         $query_strategy_part = sprintf("(feed_id = %d OR %s)",
2363                                                 $feed, implode(" OR ", $cat_siblings));
2364
2365                                 } else {
2366                                         $query_strategy_part = "ttrss_entries.id > 0";
2367                                 }
2368
2369                         } else if ($feed > 0) {
2370
2371                                 if ($cat_view) {
2372
2373                                         if ($feed > 0) {
2374                                                 if ($include_children) {
2375                                                         # sub-cats
2376                                                         $subcats = getChildCategories($link, $feed, $owner_uid);
2377
2378                                                         if (count($subcats) == 0) {
2379                                                                 $query_strategy_part = "cat_id = '$feed'";
2380                                                         } else {
2381                                                                 array_push($subcats, $feed);
2382                                                                 $query_strategy_part = "cat_id IN (".
2383                                                                         implode(",", $subcats).")";
2384                                                         }
2385                                                 } else {
2386                                                         $query_strategy_part = "cat_id = '$feed'";
2387                                                 }
2388
2389                                         } else {
2390                                                 $query_strategy_part = "cat_id IS NULL";
2391                                         }
2392
2393                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2394
2395                                 } else {
2396                                         $query_strategy_part = "feed_id = '$feed'";
2397                                 }
2398                         } else if ($feed == 0 && !$cat_view) { // archive virtual feed
2399                                 $query_strategy_part = "feed_id IS NULL";
2400                         } else if ($feed == 0 && $cat_view) { // uncategorized
2401                                 $query_strategy_part = "cat_id IS NULL AND feed_id IS NOT NULL";
2402                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2403                         } else if ($feed == -1) { // starred virtual feed
2404                                 $query_strategy_part = "marked = true";
2405                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2406                         } else if ($feed == -2) { // published virtual feed OR labels category
2407
2408                                 if (!$cat_view) {
2409                                         $query_strategy_part = "published = true";
2410                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2411                                 } else {
2412                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2413
2414                                         $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2415
2416                                         $query_strategy_part = "ttrss_labels2.id = ttrss_user_labels2.label_id AND
2417                                                 ttrss_user_labels2.article_id = ref_id";
2418
2419                                 }
2420                         } else if ($feed == -6) { // recently read
2421                                 $query_strategy_part = "unread = false AND last_read IS NOT NULL";
2422                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2423                                 $override_order = "last_read DESC";
2424                         } else if ($feed == -3) { // fresh virtual feed
2425                                 $query_strategy_part = "unread = true AND score >= 0";
2426
2427                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
2428
2429                                 if (DB_TYPE == "pgsql") {
2430                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
2431                                 } else {
2432                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
2433                                 }
2434
2435                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2436                         } else if ($feed == -4) { // all articles virtual feed
2437                                 $query_strategy_part = "true";
2438                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2439                         } else if ($feed <= -10) { // labels
2440                                 $label_id = -$feed - 11;
2441
2442                                 $query_strategy_part = "label_id = '$label_id' AND
2443                                         ttrss_labels2.id = ttrss_user_labels2.label_id AND
2444                                         ttrss_user_labels2.article_id = ref_id";
2445
2446                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2447                                 $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2448
2449                         } else {
2450                                 $query_strategy_part = "id > 0"; // dumb
2451                         }
2452
2453                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
2454                                 $date_sort_field = "updated";
2455                         } else {
2456                                 $date_sort_field = "date_entered";
2457                         }
2458
2459                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
2460                                 $order_by = "$date_sort_field";
2461                         } else {
2462                                 $order_by = "$date_sort_field DESC";
2463                         }
2464
2465                         if ($view_mode != "noscores") {
2466                                 $order_by = "score DESC, $order_by";
2467                         }
2468
2469                         if ($override_order) {
2470                                 $order_by = $override_order;
2471                         }
2472
2473                         $feed_title = "";
2474
2475                         if ($search) {
2476                                 $feed_title = "Search results";
2477                         } else {
2478                                 if ($cat_view) {
2479                                         $feed_title = getCategoryTitle($link, $feed);
2480                                 } else {
2481                                         if (is_numeric($feed) && $feed > 0) {
2482                                                 $result = db_query($link, "SELECT title,site_url,last_error
2483                                                         FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = $owner_uid");
2484
2485                                                 $feed_title = db_fetch_result($result, 0, "title");
2486                                                 $feed_site_url = db_fetch_result($result, 0, "site_url");
2487                                                 $last_error = db_fetch_result($result, 0, "last_error");
2488                                         } else {
2489                                                 $feed_title = getFeedTitle($link, $feed);
2490                                         }
2491                                 }
2492                         }
2493
2494                         $content_query_part = "content as content_preview,";
2495
2496                         if (is_numeric($feed)) {
2497
2498                                 if ($feed >= 0) {
2499                                         $feed_kind = "Feeds";
2500                                 } else {
2501                                         $feed_kind = "Labels";
2502                                 }
2503
2504                                 if ($limit_query_part) {
2505                                         $offset_query_part = "OFFSET $offset";
2506                                 }
2507
2508                                 if ($vfeed_query_part && get_pref($link, 'VFEED_GROUP_BY_FEED', $owner_uid)) {
2509                                         if (!$override_order) {
2510                                                 $order_by = "ttrss_feeds.title, $order_by";
2511                                         }
2512                                 }
2513
2514                                 if ($feed != "0") {
2515                                         $from_qpart = "ttrss_entries,ttrss_user_entries,ttrss_feeds$ext_tables_part";
2516                                         $feed_check_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
2517
2518                                 } else {
2519                                         $from_qpart = "ttrss_entries,ttrss_user_entries$ext_tables_part
2520                                                 LEFT JOIN ttrss_feeds ON (feed_id = ttrss_feeds.id)";
2521                                 }
2522
2523                                 $query = "SELECT DISTINCT
2524                                                 date_entered,
2525                                                 guid,
2526                                                 ttrss_entries.id,ttrss_entries.title,
2527                                                 updated,
2528                                                 label_cache,
2529                                                 tag_cache,
2530                                                 always_display_enclosures,
2531                                                 site_url,
2532                                                 note,
2533                                                 num_comments,
2534                                                 comments,
2535                                                 int_id,
2536                                                 unread,feed_id,marked,published,link,last_read,orig_feed_id,
2537                                                 ".SUBSTRING_FOR_DATE."(last_read,1,19) as last_read_noms,
2538                                                 $vfeed_query_part
2539                                                 $content_query_part
2540                                                 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated_noms,
2541                                                 author,score
2542                                         FROM
2543                                                 $from_qpart
2544                                         WHERE
2545                                         $feed_check_qpart
2546                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
2547                                         ttrss_user_entries.owner_uid = '$owner_uid' AND
2548                                         $search_query_part
2549                                         $filter_query_part
2550                                         $view_query_part
2551                                         $since_id_part
2552                                         $query_strategy_part ORDER BY $order_by
2553                                         $limit_query_part $offset_query_part";
2554
2555                                 if ($_REQUEST["debug"]) print $query;
2556
2557                                 $result = db_query($link, $query);
2558
2559                         } else {
2560                                 // browsing by tag
2561
2562                                 $select_qpart = "SELECT DISTINCT " .
2563                                                                 "date_entered," .
2564                                                                 "guid," .
2565                                                                 "note," .
2566                                                                 "ttrss_entries.id as id," .
2567                                                                 "title," .
2568                                                                 "updated," .
2569                                                                 "unread," .
2570                                                                 "feed_id," .
2571                                                                 "orig_feed_id," .
2572                                                                 "marked," .
2573                                                                 "num_comments, " .
2574                                                                 "comments, " .
2575                                                                 "tag_cache," .
2576                                                                 "label_cache," .
2577                                                                 "link," .
2578                                                                 "last_read," .
2579                                                                 SUBSTRING_FOR_DATE . "(last_read,1,19) as last_read_noms," .
2580                                                                 $since_id_part .
2581                                                                 $vfeed_query_part .
2582                                                                 $content_query_part .
2583                                                                 SUBSTRING_FOR_DATE . "(updated,1,19) as updated_noms," .
2584                                                                 "score ";
2585
2586                                 $feed_kind = "Tags";
2587                                 $all_tags = explode(",", $feed);
2588                                 if ($search_mode == 'any') {
2589                                         $tag_sql = "tag_name in (" . implode(", ", array_map("db_quote", $all_tags)) . ")";
2590                                         $from_qpart = " FROM ttrss_entries,ttrss_user_entries,ttrss_tags ";
2591                                         $where_qpart = " WHERE " .
2592                                                                    "ref_id = ttrss_entries.id AND " .
2593                                                                    "ttrss_user_entries.owner_uid = $owner_uid AND " .
2594                                                                    "post_int_id = int_id AND $tag_sql AND " .
2595                                                                    $view_query_part .
2596                                                                    $search_query_part .
2597                                                                    $query_strategy_part . " ORDER BY $order_by " .
2598                                                                    $limit_query_part;
2599
2600                                 } else {
2601                                         $i = 1;
2602                                         $sub_selects = array();
2603                                         $sub_ands = array();
2604                                         foreach ($all_tags as $term) {
2605                                                 array_push($sub_selects, "(SELECT post_int_id from ttrss_tags WHERE tag_name = " . db_quote($term) . " AND owner_uid = $owner_uid) as A$i");
2606                                                 $i++;
2607                                         }
2608                                         if ($i > 2) {
2609                                                 $x = 1;
2610                                                 $y = 2;
2611                                                 do {
2612                                                         array_push($sub_ands, "A$x.post_int_id = A$y.post_int_id");
2613                                                         $x++;
2614                                                         $y++;
2615                                                 } while ($y < $i);
2616                                         }
2617                                         array_push($sub_ands, "A1.post_int_id = ttrss_user_entries.int_id and ttrss_user_entries.owner_uid = $owner_uid");
2618                                         array_push($sub_ands, "ttrss_user_entries.ref_id = ttrss_entries.id");
2619                                         $from_qpart = " FROM " . implode(", ", $sub_selects) . ", ttrss_user_entries, ttrss_entries";
2620                                         $where_qpart = " WHERE " . implode(" AND ", $sub_ands);
2621                                 }
2622                                 //                              error_log("TAG SQL: " . $tag_sql);
2623                                 // $tag_sql = "tag_name = '$feed'";   DEFAULT way
2624
2625                                 //                              error_log("[". $select_qpart . "][" . $from_qpart . "][" .$where_qpart . "]");
2626                                 $result = db_query($link, $select_qpart . $from_qpart . $where_qpart);
2627                         }
2628
2629                         return array($result, $feed_title, $feed_site_url, $last_error);
2630
2631         }
2632
2633         function sanitize($link, $str, $force_strip_tags = false, $owner = false, $site_url = false) {
2634                 global $purifier;
2635
2636                 if (!$owner) $owner = $_SESSION["uid"];
2637
2638                 $res = trim($str); if (!$res) return '';
2639
2640                 // create global Purifier object if needed
2641                 if (!$purifier) {
2642                         require_once 'lib/htmlpurifier/library/HTMLPurifier.auto.php';
2643
2644                         $config = HTMLPurifier_Config::createDefault();
2645
2646                         $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]";
2647
2648                         $config->set('HTML.SafeObject', true);
2649                         @$config->set('HTML', 'Allowed', $allowed);
2650                         $config->set('Output.FlashCompat', true);
2651                         $config->set('Attr.EnableID', true);
2652                         if (!defined('MOBILE_VERSION')) {
2653                                 @$config->set('Cache', 'SerializerPath', CACHE_DIR . "/htmlpurifier");
2654                         } else {
2655                                 @$config->set('Cache', 'SerializerPath', "../" . CACHE_DIR . "/htmlpurifier");
2656                         }
2657
2658                         $config->set('Filter.YouTube', true);
2659
2660                         $purifier = new HTMLPurifier($config);
2661                 }
2662
2663                 $res = $purifier->purify($res);
2664
2665                 if (get_pref($link, "STRIP_IMAGES", $owner)) {
2666                         $res = preg_replace('/<img[^>]+>/is', '', $res);
2667                 }
2668
2669                 if (strpos($res, "href=") === false)
2670                         $res = rewrite_urls($res);
2671
2672                 $charset_hack = '<head>
2673                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
2674                 </head>';
2675
2676                 $res = trim($res); if (!$res) return '';
2677
2678                 libxml_use_internal_errors(true);
2679
2680                 $doc = new DOMDocument();
2681                 $doc->loadHTML($charset_hack . $res);
2682                 $xpath = new DOMXPath($doc);
2683
2684                 $entries = $xpath->query('(//a[@href]|//img[@src])');
2685                 $br_inserted = 0;
2686
2687                 foreach ($entries as $entry) {
2688
2689                         if ($site_url) {
2690
2691                                 if ($entry->hasAttribute('href'))
2692                                         $entry->setAttribute('href',
2693                                                 rewrite_relative_url($site_url, $entry->getAttribute('href')));
2694
2695                                 if ($entry->hasAttribute('src'))
2696                                         if (preg_match('/^image.php\?i=[a-z0-9]+$/', $entry->getAttribute('src')) == 0)
2697                                                 $entry->setAttribute('src',
2698                                                         rewrite_relative_url($site_url, $entry->getAttribute('src')));
2699                         }
2700
2701                         if (strtolower($entry->nodeName) == "a") {
2702                                 $entry->setAttribute("target", "_blank");
2703                         }
2704
2705                         if (strtolower($entry->nodeName) == "img" && !$br_inserted) {
2706                                 $br = $doc->createElement("br");
2707
2708                                 if ($entry->parentNode->nextSibling) {
2709                                         $entry->parentNode->insertBefore($br, $entry->nextSibling);
2710                                         $br_inserted = 1;
2711                                 }
2712
2713                         }
2714                 }
2715
2716                 $node = $doc->getElementsByTagName('body')->item(0);
2717
2718                 return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
2719         }
2720
2721         /**
2722          * Send by mail a digest of last articles.
2723          *
2724          * @param mixed $link The database connection.
2725          * @param integer $limit The maximum number of articles by digest.
2726          * @return boolean Return false if digests are not enabled.
2727          */
2728         function send_headlines_digests($link, $debug = false) {
2729
2730                 require_once 'lib/phpmailer/class.phpmailer.php';
2731
2732                 $user_limit = 15; // amount of users to process (e.g. emails to send out)
2733                 $limit = 1000; // maximum amount of headlines to include
2734
2735                 if ($debug) _debug("Sending digests, batch of max $user_limit users, headline limit = $limit");
2736
2737                 if (DB_TYPE == "pgsql") {
2738                         $interval_query = "last_digest_sent < NOW() - INTERVAL '1 days'";
2739                 } else if (DB_TYPE == "mysql") {
2740                         $interval_query = "last_digest_sent < DATE_SUB(NOW(), INTERVAL 1 DAY)";
2741                 }
2742
2743                 $result = db_query($link, "SELECT id,email FROM ttrss_users
2744                                 WHERE email != '' AND (last_digest_sent IS NULL OR $interval_query)");
2745
2746                 while ($line = db_fetch_assoc($result)) {
2747
2748                         if (get_pref($link, 'DIGEST_ENABLE', $line['id'], false)) {
2749                                 $preferred_ts = strtotime(get_pref($link, 'DIGEST_PREFERRED_TIME', $line['id'], '00:00'));
2750
2751                                 // try to send digests within 2 hours of preferred time
2752                                 if ($preferred_ts && time() >= $preferred_ts &&
2753                                                 time() - $preferred_ts <= 7200) {
2754
2755                                         if ($debug) print "Sending digest for UID:" . $line['id'] . " - " . $line["email"] . " ... ";
2756
2757                                         $do_catchup = get_pref($link, 'DIGEST_CATCHUP', $line['id'], false);
2758
2759                                         global $tz_offset;
2760
2761                                         // reset tz_offset global to prevent tz cache clash between users
2762                                         $tz_offset = -1;
2763
2764                                         $tuple = prepare_headlines_digest($link, $line["id"], 1, $limit);
2765                                         $digest = $tuple[0];
2766                                         $headlines_count = $tuple[1];
2767                                         $affected_ids = $tuple[2];
2768                                         $digest_text = $tuple[3];
2769
2770                                         if ($headlines_count > 0) {
2771
2772                                                 $mail = new PHPMailer();
2773
2774                                                 $mail->PluginDir = "lib/phpmailer/";
2775                                                 $mail->SetLanguage("en", "lib/phpmailer/language/");
2776
2777                                                 $mail->CharSet = "UTF-8";
2778
2779                                                 $mail->From = SMTP_FROM_ADDRESS;
2780                                                 $mail->FromName = SMTP_FROM_NAME;
2781                                                 $mail->AddAddress($line["email"], $line["login"]);
2782
2783                                                 if (SMTP_HOST) {
2784                                                         $mail->Host = SMTP_HOST;
2785                                                         $mail->Mailer = "smtp";
2786                                                         $mail->SMTPAuth = SMTP_LOGIN != '';
2787                                                         $mail->Username = SMTP_LOGIN;
2788                                                         $mail->Password = SMTP_PASSWORD;
2789                                                 }
2790
2791                                                 $mail->IsHTML(true);
2792                                                 $mail->Subject = DIGEST_SUBJECT;
2793                                                 $mail->Body = $digest;
2794                                                 $mail->AltBody = $digest_text;
2795
2796                                                 $rc = $mail->Send();
2797
2798                                                 if (!$rc && $debug) print "ERROR: " . $mail->ErrorInfo;
2799
2800                                                 if ($debug) print "RC=$rc\n";
2801
2802                                                 if ($rc && $do_catchup) {
2803                                                         if ($debug) print "Marking affected articles as read...\n";
2804                                                         catchupArticlesById($link, $affected_ids, 0, $line["id"]);
2805                                                 }
2806                                         } else {
2807                                                 if ($debug) print "No headlines\n";
2808                                         }
2809
2810                                         db_query($link, "UPDATE ttrss_users SET last_digest_sent = NOW()
2811                                                 WHERE id = " . $line["id"]);
2812
2813                                 }
2814                         }
2815                 }
2816
2817                 if ($debug) _debug("All done.");
2818
2819         }
2820
2821         function prepare_headlines_digest($link, $user_id, $days = 1, $limit = 1000) {
2822
2823                 require_once "lib/MiniTemplator.class.php";
2824
2825                 $tpl = new MiniTemplator;
2826                 $tpl_t = new MiniTemplator;
2827
2828                 $tpl->readTemplateFromFile("templates/digest_template_html.txt");
2829                 $tpl_t->readTemplateFromFile("templates/digest_template.txt");
2830
2831                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $user_id);
2832                 $local_ts = convert_timestamp(time(), 'UTC', $user_tz_string);
2833
2834                 $tpl->setVariable('CUR_DATE', date('Y/m/d', $local_ts));
2835                 $tpl->setVariable('CUR_TIME', date('G:i', $local_ts));
2836
2837                 $tpl_t->setVariable('CUR_DATE', date('Y/m/d', $local_ts));
2838                 $tpl_t->setVariable('CUR_TIME', date('G:i', $local_ts));
2839
2840                 $affected_ids = array();
2841
2842                 if (DB_TYPE == "pgsql") {
2843                         $interval_query = "ttrss_entries.date_updated > NOW() - INTERVAL '$days days'";
2844                 } else if (DB_TYPE == "mysql") {
2845                         $interval_query = "ttrss_entries.date_updated > DATE_SUB(NOW(), INTERVAL $days DAY)";
2846                 }
2847
2848                 $result = db_query($link, "SELECT ttrss_entries.title,
2849                                 ttrss_feeds.title AS feed_title,
2850                                 COALESCE(ttrss_feed_categories.title, '".__('Uncategorized')."') AS cat_title,
2851                                 date_updated,
2852                                 ttrss_user_entries.ref_id,
2853                                 link,
2854                                 score,
2855                                 content,
2856                                 ".SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
2857                         FROM
2858                                 ttrss_user_entries,ttrss_entries,ttrss_feeds
2859                         LEFT JOIN
2860                                 ttrss_feed_categories ON (cat_id = ttrss_feed_categories.id)
2861                         WHERE
2862                                 ref_id = ttrss_entries.id AND feed_id = ttrss_feeds.id
2863                                 AND include_in_digest = true
2864                                 AND $interval_query
2865                                 AND ttrss_user_entries.owner_uid = $user_id
2866                                 AND unread = true
2867                                 AND score >= 0
2868                         ORDER BY ttrss_feed_categories.title, ttrss_feeds.title, score DESC, date_updated DESC
2869                         LIMIT $limit");
2870
2871                 $cur_feed_title = "";
2872
2873                 $headlines_count = db_num_rows($result);
2874
2875                 $headlines = array();
2876
2877                 while ($line = db_fetch_assoc($result)) {
2878                         array_push($headlines, $line);
2879                 }
2880
2881                 for ($i = 0; $i < sizeof($headlines); $i++) {
2882
2883                         $line = $headlines[$i];
2884
2885                         array_push($affected_ids, $line["ref_id"]);
2886
2887                         $updated = make_local_datetime($link, $line['last_updated'], false,
2888                                 $user_id);
2889
2890 /*                      if ($line["score"] != 0) {
2891                                 if ($line["score"] > 0) $line["score"] = '+' . $line["score"];
2892
2893                                 $line["title"] .= " (".$line['score'].")";
2894                         } */
2895
2896                         if (get_pref($link, 'ENABLE_FEED_CATS', $user_id)) {
2897                                 $line['feed_title'] = $line['cat_title'] . " / " . $line['feed_title'];
2898                         }
2899
2900                         $tpl->setVariable('FEED_TITLE', $line["feed_title"]);
2901                         $tpl->setVariable('ARTICLE_TITLE', $line["title"]);
2902                         $tpl->setVariable('ARTICLE_LINK', $line["link"]);
2903                         $tpl->setVariable('ARTICLE_UPDATED', $updated);
2904                         $tpl->setVariable('ARTICLE_EXCERPT',
2905                                 truncate_string(strip_tags($line["content"]), 300));
2906 //                      $tpl->setVariable('ARTICLE_CONTENT',
2907 //                              strip_tags($article_content));
2908
2909                         $tpl->addBlock('article');
2910
2911                         $tpl_t->setVariable('FEED_TITLE', $line["feed_title"]);
2912                         $tpl_t->setVariable('ARTICLE_TITLE', $line["title"]);
2913                         $tpl_t->setVariable('ARTICLE_LINK', $line["link"]);
2914                         $tpl_t->setVariable('ARTICLE_UPDATED', $updated);
2915 //                      $tpl_t->setVariable('ARTICLE_EXCERPT',
2916 //                              truncate_string(strip_tags($line["excerpt"]), 100));
2917
2918                         $tpl_t->addBlock('article');
2919
2920                         if ($headlines[$i]['feed_title'] != $headlines[$i+1]['feed_title']) {
2921                                 $tpl->addBlock('feed');
2922                                 $tpl_t->addBlock('feed');
2923                         }
2924
2925                 }
2926
2927                 $tpl->addBlock('digest');
2928                 $tpl->generateOutputToString($tmp);
2929
2930                 $tpl_t->addBlock('digest');
2931                 $tpl_t->generateOutputToString($tmp_t);
2932
2933                 return array($tmp, $headlines_count, $affected_ids, $tmp_t);
2934         }
2935
2936         function check_for_update($link) {
2937                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2938                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION;
2939
2940                         $version_data = @fetch_file_contents($version_url);
2941
2942                         if ($version_data) {
2943                                 $version_data = json_decode($version_data, true);
2944                                 if ($version_data && $version_data['version']) {
2945
2946                                         if (version_compare(VERSION, $version_data['version']) == -1) {
2947                                                 return $version_data;
2948                                         }
2949                                 }
2950                         }
2951                 }
2952                 return false;
2953         }
2954
2955         function markArticlesById($link, $ids, $cmode) {
2956
2957                 $tmp_ids = array();
2958
2959                 foreach ($ids as $id) {
2960                         array_push($tmp_ids, "ref_id = '$id'");
2961                 }
2962
2963                 $ids_qpart = join(" OR ", $tmp_ids);
2964
2965                 if ($cmode == 0) {
2966                         db_query($link, "UPDATE ttrss_user_entries SET
2967                         marked = false,last_read = NOW()
2968                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2969                 } else if ($cmode == 1) {
2970                         db_query($link, "UPDATE ttrss_user_entries SET
2971                         marked = true
2972                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2973                 } else {
2974                         db_query($link, "UPDATE ttrss_user_entries SET
2975                         marked = NOT marked,last_read = NOW()
2976                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2977                 }
2978         }
2979
2980         function publishArticlesById($link, $ids, $cmode) {
2981
2982                 $tmp_ids = array();
2983
2984                 foreach ($ids as $id) {
2985                         array_push($tmp_ids, "ref_id = '$id'");
2986                 }
2987
2988                 $ids_qpart = join(" OR ", $tmp_ids);
2989
2990                 if ($cmode == 0) {
2991                         db_query($link, "UPDATE ttrss_user_entries SET
2992                         published = false,last_read = NOW()
2993                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2994                 } else if ($cmode == 1) {
2995                         db_query($link, "UPDATE ttrss_user_entries SET
2996                         published = true
2997                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
2998                 } else {
2999                         db_query($link, "UPDATE ttrss_user_entries SET
3000                         published = NOT published,last_read = NOW()
3001                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3002                 }
3003
3004                 if (PUBSUBHUBBUB_HUB) {
3005                         $rss_link = get_self_url_prefix() .
3006                                 "/public.php?op=rss&id=-2&key=" .
3007                                 get_feed_access_key($link, -2, false);
3008
3009                         $p = new Publisher(PUBSUBHUBBUB_HUB);
3010
3011                         $pubsub_result = $p->publish_update($rss_link);
3012                 }
3013         }
3014
3015         function catchupArticlesById($link, $ids, $cmode, $owner_uid = false) {
3016
3017                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3018                 if (count($ids) == 0) return;
3019
3020                 $tmp_ids = array();
3021
3022                 foreach ($ids as $id) {
3023                         array_push($tmp_ids, "ref_id = '$id'");
3024                 }
3025
3026                 $ids_qpart = join(" OR ", $tmp_ids);
3027
3028                 if ($cmode == 0) {
3029                         db_query($link, "UPDATE ttrss_user_entries SET
3030                         unread = false,last_read = NOW()
3031                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3032                 } else if ($cmode == 1) {
3033                         db_query($link, "UPDATE ttrss_user_entries SET
3034                         unread = true
3035                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3036                 } else {
3037                         db_query($link, "UPDATE ttrss_user_entries SET
3038                         unread = NOT unread,last_read = NOW()
3039                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3040                 }
3041
3042                 /* update ccache */
3043
3044                 $result = db_query($link, "SELECT DISTINCT feed_id FROM ttrss_user_entries
3045                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3046
3047                 while ($line = db_fetch_assoc($result)) {
3048                         ccache_update($link, $line["feed_id"], $owner_uid);
3049                 }
3050         }
3051
3052         function catchupArticleById($link, $id, $cmode) {
3053
3054                 if ($cmode == 0) {
3055                         db_query($link, "UPDATE ttrss_user_entries SET
3056                         unread = false,last_read = NOW()
3057                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3058                 } else if ($cmode == 1) {
3059                         db_query($link, "UPDATE ttrss_user_entries SET
3060                         unread = true
3061                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3062                 } else {
3063                         db_query($link, "UPDATE ttrss_user_entries SET
3064                         unread = NOT unread,last_read = NOW()
3065                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3066                 }
3067
3068                 $feed_id = getArticleFeed($link, $id);
3069                 ccache_update($link, $feed_id, $_SESSION["uid"]);
3070         }
3071
3072         function make_guid_from_title($title) {
3073                 return preg_replace("/[ \"\',.:;]/", "-",
3074                         mb_strtolower(strip_tags($title), 'utf-8'));
3075         }
3076
3077         function get_article_tags($link, $id, $owner_uid = 0, $tag_cache = false) {
3078
3079                 $a_id = db_escape_string($id);
3080
3081                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3082
3083                 $query = "SELECT DISTINCT tag_name,
3084                         owner_uid as owner FROM
3085                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
3086                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
3087
3088                 $obj_id = md5("TAGS:$owner_uid:$id");
3089                 $tags = array();
3090
3091                 /* check cache first */
3092
3093                 if ($tag_cache === false) {
3094                         $result = db_query($link, "SELECT tag_cache FROM ttrss_user_entries
3095                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
3096
3097                         $tag_cache = db_fetch_result($result, 0, "tag_cache");
3098                 }
3099
3100                 if ($tag_cache) {
3101                         $tags = explode(",", $tag_cache);
3102                 } else {
3103
3104                         /* do it the hard way */
3105
3106                         $tmp_result = db_query($link, $query);
3107
3108                         while ($tmp_line = db_fetch_assoc($tmp_result)) {
3109                                 array_push($tags, $tmp_line["tag_name"]);
3110                         }
3111
3112                         /* update the cache */
3113
3114                         $tags_str = db_escape_string(join(",", $tags));
3115
3116                         db_query($link, "UPDATE ttrss_user_entries
3117                                 SET tag_cache = '$tags_str' WHERE ref_id = '$id'
3118                                 AND owner_uid = $owner_uid");
3119                 }
3120
3121                 return $tags;
3122         }
3123
3124         function trim_array($array) {
3125                 $tmp = $array;
3126                 array_walk($tmp, 'trim');
3127                 return $tmp;
3128         }
3129
3130         function tag_is_valid($tag) {
3131                 if ($tag == '') return false;
3132                 if (preg_match("/^[0-9]*$/", $tag)) return false;
3133                 if (mb_strlen($tag) > 250) return false;
3134
3135                 if (function_exists('iconv')) {
3136                         $tag = iconv("utf-8", "utf-8", $tag);
3137                 }
3138
3139                 if (!$tag) return false;
3140
3141                 return true;
3142         }
3143
3144         function render_login_form($link, $mobile = 0) {
3145                 switch ($mobile) {
3146                 case 0:
3147                         require_once "login_form.php";
3148                         break;
3149                 case 1:
3150                         require_once "mobile/login_form.php";
3151                         break;
3152                 case 2:
3153                         require_once "mobile/classic/login_form.php";
3154                 }
3155         }
3156
3157         // from http://developer.apple.com/internet/safari/faq.html
3158         function no_cache_incantation() {
3159                 header("Expires: Mon, 22 Dec 1980 00:00:00 GMT"); // Happy birthday to me :)
3160                 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
3161                 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); // HTTP/1.1
3162                 header("Cache-Control: post-check=0, pre-check=0", false);
3163                 header("Pragma: no-cache"); // HTTP/1.0
3164         }
3165
3166         function format_warning($msg, $id = "") {
3167                 global $link;
3168                 return "<div class=\"warning\" id=\"$id\">
3169                         <img src=\"".theme_image($link, "images/sign_excl.png")."\">$msg</div>";
3170         }
3171
3172         function format_notice($msg, $id = "") {
3173                 global $link;
3174                 return "<div class=\"notice\" id=\"$id\">
3175                         <img src=\"".theme_image($link, "images/sign_info.png")."\">$msg</div>";
3176         }
3177
3178         function format_error($msg, $id = "") {
3179                 global $link;
3180                 return "<div class=\"error\" id=\"$id\">
3181                         <img src=\"".theme_image($link, "images/sign_excl.png")."\">$msg</div>";
3182         }
3183
3184         function print_notice($msg) {
3185                 return print format_notice($msg);
3186         }
3187
3188         function print_warning($msg) {
3189                 return print format_warning($msg);
3190         }
3191
3192         function print_error($msg) {
3193                 return print format_error($msg);
3194         }
3195
3196
3197         function T_sprintf() {
3198                 $args = func_get_args();
3199                 return vsprintf(__(array_shift($args)), $args);
3200         }
3201
3202         function format_inline_player($link, $url, $ctype) {
3203
3204                 $entry = "";
3205
3206                 if (strpos($ctype, "audio/") === 0) {
3207
3208                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
3209                                 strpos($_SERVER['HTTP_USER_AGENT'], "Chrome") !== false ||
3210                                 strpos($_SERVER['HTTP_USER_AGENT'], "Safari") !== false )) {
3211
3212                                 $id = 'AUDIO-' . uniqid();
3213
3214                                 $entry .= "<audio id=\"$id\"\">
3215                                         <source src=\"$url\"></source>
3216                                         </audio>";
3217
3218                                 $entry .= "<span onclick=\"player(this)\"
3219                                         title=\"".__("Click to play")."\" status=\"0\"
3220                                         class=\"player\" audio-id=\"$id\">".__("Play")."</span>";
3221
3222                         } else {
3223
3224                                 $entry .= "<object type=\"application/x-shockwave-flash\"
3225                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
3226                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
3227                                         <param name=\"movie\"
3228                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
3229                                         </object>";
3230                         }
3231                 }
3232
3233                 $filename = substr($url, strrpos($url, "/")+1);
3234
3235                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3236                         $filename . " (" . $ctype . ")" . "</a>";
3237
3238                 return $entry;
3239         }
3240
3241         function format_article($link, $id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
3242                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3243
3244                 $rv = array();
3245
3246                 $rv['id'] = $id;
3247
3248                 /* we can figure out feed_id from article id anyway, why do we
3249                  * pass feed_id here? let's ignore the argument :( */
3250
3251                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3252                         WHERE ref_id = '$id'");
3253
3254                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
3255
3256                 $rv['feed_id'] = $feed_id;
3257
3258                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
3259
3260                 $result = db_query($link, "SELECT rtl_content, always_display_enclosures FROM ttrss_feeds
3261                         WHERE id = '$feed_id' AND owner_uid = $owner_uid");
3262
3263                 if (db_num_rows($result) == 1) {
3264                         $rtl_content = sql_bool_to_bool(db_fetch_result($result, 0, "rtl_content"));
3265                         $always_display_enclosures = sql_bool_to_bool(db_fetch_result($result, 0, "always_display_enclosures"));
3266                 } else {
3267                         $rtl_content = false;
3268                         $always_display_enclosures = false;
3269                 }
3270
3271                 if ($rtl_content) {
3272                         $rtl_tag = "dir=\"RTL\"";
3273                         $rtl_class = "RTL";
3274                 } else {
3275                         $rtl_tag = "";
3276                         $rtl_class = "";
3277                 }
3278
3279                 if ($mark_as_read) {
3280                         $result = db_query($link, "UPDATE ttrss_user_entries
3281                                 SET unread = false,last_read = NOW()
3282                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
3283
3284                         ccache_update($link, $feed_id, $owner_uid);
3285                 }
3286
3287                 $result = db_query($link, "SELECT title,link,content,feed_id,comments,int_id,
3288                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
3289                         (SELECT icon_url FROM ttrss_feeds WHERE id = feed_id) as icon_url,
3290                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
3291                         num_comments,
3292                         tag_cache,
3293                         author,
3294                         orig_feed_id,
3295                         note
3296                         FROM ttrss_entries,ttrss_user_entries
3297                         WHERE   id = '$id' AND ref_id = id AND owner_uid = $owner_uid");
3298
3299                 if ($result) {
3300
3301                         $line = db_fetch_assoc($result);
3302
3303                         if ($line["icon_url"]) {
3304                                 $feed_icon = "<img src=\"" . $line["icon_url"] . "\">";
3305                         } else {
3306                                 $feed_icon = "&nbsp;";
3307                         }
3308
3309                         $feed_site_url = $line['site_url'];
3310
3311                         $num_comments = $line["num_comments"];
3312                         $entry_comments = "";
3313
3314                         if ($num_comments > 0) {
3315                                 if ($line["comments"]) {
3316                                         $comments_url = $line["comments"];
3317                                 } else {
3318                                         $comments_url = $line["link"];
3319                                 }
3320                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
3321                         } else {
3322                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
3323                                         $entry_comments = "<a target='_blank' href=\"".$line["comments"]."\">comments</a>";
3324                                 }
3325                         }
3326
3327                         if ($zoom_mode) {
3328                                 header("Content-Type: text/html");
3329                                 $rv['content'] .= "<html><head>
3330                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
3331                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
3332                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
3333                                         </head><body>";
3334                         }
3335
3336                         $title_escaped = db_escape_string($line['title']);
3337
3338                         $rv['content'] .= "<div id=\"PTITLE-$id\" style=\"display : none\">" .
3339                                 truncate_string(strip_tags($line['title']), 15) . "</div>";
3340
3341                         $rv['content'] .= "<div id=\"PTITLE-FULL-$id\" style=\"display : none\">" .
3342                                 strip_tags($line['title']) . "</div>";
3343
3344                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
3345
3346                         $rv['content'] .= "<div onclick=\"return postClicked(event, $id)\"
3347                                 class=\"postHeader\" id=\"POSTHDR-$id\">";
3348
3349                         $entry_author = $line["author"];
3350
3351                         if ($entry_author) {
3352                                 $entry_author = __(" - ") . $entry_author;
3353                         }
3354
3355                         $parsed_updated = make_local_datetime($link, $line["updated"], true,
3356                                 $owner_uid, true);
3357
3358                         $rv['content'] .= "<div class=\"postDate$rtl_class\">$parsed_updated</div>";
3359
3360                         if ($line["link"]) {
3361                                 $rv['content'] .= "<div class='postTitle' clear='both'><a target='_blank'
3362                                         title=\"".htmlspecialchars($line['title'])."\"
3363                                         href=\"" .
3364                                         $line["link"] . "\">" .
3365                                         truncate_string($line["title"], 100) .
3366                                         "<span class='author'>$entry_author</span></a></div>";
3367                         } else {
3368                                 $rv['content'] .= "<div class='postTitle' clear='both'>" . $line["title"] . "$entry_author</div>";
3369                         }
3370
3371                         $tag_cache = $line["tag_cache"];
3372
3373                         if (!$tag_cache)
3374                                 $tags = get_article_tags($link, $id, $owner_uid);
3375                         else
3376                                 $tags = explode(",", $tag_cache);
3377
3378                         $tags_str = format_tags_string($tags, $id);
3379                         $tags_str_full = join(", ", $tags);
3380
3381                         if (!$tags_str_full) $tags_str_full = __("no tags");
3382
3383                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
3384
3385                         $rv['content'] .= "<div class='postTags' style='float : right'>
3386                                 <img src='".theme_image($link, 'images/tag.png')."'
3387                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
3388
3389                         if (!$zoom_mode) {
3390                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
3391                                         <a title=\"".__('Edit tags for this article')."\"
3392                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
3393
3394                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
3395                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
3396                                         position=\"below\">$tags_str_full</div>";
3397
3398                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/art-zoom.png')."\"
3399                                                 class='tagsPic' style=\"cursor : pointer\"
3400                                                 onclick=\"postOpenInNewTab(event, $id)\"
3401                                                 alt='Zoom' title='".__('Open article in new tab')."'>";
3402
3403                                 $button_plugins = explode(",", ARTICLE_BUTTON_PLUGINS);
3404
3405                                 foreach ($button_plugins as $p) {
3406                                         $pclass = trim("button_${p}");
3407
3408                                         if (class_exists($pclass)) {
3409                                                 $plugin = new $pclass($link);
3410                                                 $rv['content'] .= $plugin->render($id, $line);
3411                                         }
3412                                 }
3413
3414                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/digest_checkbox.png')."\"
3415                                                 class='tagsPic' style=\"cursor : pointer\"
3416                                                 onclick=\"closeArticlePanel($id)\"
3417                                                 title='".__('Close article')."'>";
3418
3419                         } else {
3420                                 $tags_str = strip_tags($tags_str);
3421                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
3422                         }
3423                         $rv['content'] .= "</div>";
3424                         $rv['content'] .= "<div clear='both'>$entry_comments</div>";
3425
3426                         if ($line["orig_feed_id"]) {
3427
3428                                 $tmp_result = db_query($link, "SELECT * FROM ttrss_archived_feeds
3429                                         WHERE id = ".$line["orig_feed_id"]);
3430
3431                                 if (db_num_rows($tmp_result) != 0) {
3432
3433                                         $rv['content'] .= "<div clear='both'>";
3434                                         $rv['content'] .= __("Originally from:");
3435
3436                                         $rv['content'] .= "&nbsp;";
3437
3438                                         $tmp_line = db_fetch_assoc($tmp_result);
3439
3440                                         $rv['content'] .= "<a target='_blank'
3441                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
3442                                                 $tmp_line['title'] . "</a>";
3443
3444                                         $rv['content'] .= "&nbsp;";
3445
3446                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3447                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.png'></a>";
3448
3449                                         $rv['content'] .= "</div>";
3450                                 }
3451                         }
3452
3453                         $rv['content'] .= "</div>";
3454
3455                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3456                                 if ($line['note']) {
3457                                         $rv['content'] .= format_article_note($id, $line['note']);
3458                                 }
3459                         $rv['content'] .= "</div>";
3460
3461                         $rv['content'] .= "<div class=\"postIcon\">" .
3462                                 "<a target=\"_blank\" title=\"".__("Visit the website")."\"$
3463                                 href=\"".htmlspecialchars($feed_site_url)."\">".
3464                                 $feed_icon . "</a></div>";
3465
3466                         $rv['content'] .= "<div class=\"postContent\">";
3467
3468                         // N-grams
3469
3470                         if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_RELATED_THRESHOLD')) {
3471
3472                                 $ngram_result = db_query($link, "SELECT id,title FROM
3473                                                 ttrss_entries,ttrss_user_entries
3474                                         WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
3475                                                 AND similarity(title, '$title_escaped') >= "._NGRAM_TITLE_RELATED_THRESHOLD."
3476                                                 AND title != '$title_escaped'
3477                                                 AND owner_uid = $owner_uid");
3478
3479                                 if (db_num_rows($ngram_result) > 0) {
3480                                         $rv['content'] .= "<div dojoType=\"dijit.form.DropDownButton\">".
3481                                                 "<span>" . __('Related')."</span>";
3482                                         $rv['content'] .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3483
3484                                         while ($nline = db_fetch_assoc($ngram_result)) {
3485                                                 $rv['content'] .= "<div onclick=\"hlOpenInNewTab(null,".$nline['id'].")\"
3486                                                         dojoType=\"dijit.MenuItem\">".$nline['title']."</div>";
3487
3488                                         }
3489                                         $rv['content'] .= "</div></div><br/";
3490                                 }
3491                         }
3492
3493                         $article_content = sanitize($link, $line["content"], false, $owner_uid,
3494                                 $feed_site_url);
3495
3496                         $rv['content'] .= $article_content;
3497
3498                         $rv['content'] .= format_article_enclosures($link, $id,
3499                                 $always_display_enclosures, $article_content);
3500
3501                         $rv['content'] .= "</div>";
3502
3503                         $rv['content'] .= "</div>";
3504
3505                 }
3506
3507                 if ($zoom_mode) {
3508                         $rv['content'] .= "
3509                                 <div style=\"text-align : center\">
3510                                 <button onclick=\"return window.close()\">".
3511                                         __("Close this window")."</button></div>";
3512                         $rv['content'] .= "</body></html>";
3513                 }
3514
3515                 return $rv;
3516
3517         }
3518
3519         function print_checkpoint($n, $s) {
3520                 $ts = getmicrotime();
3521                 echo sprintf("<!-- CP[$n] %.4f seconds -->", $ts - $s);
3522                 return $ts;
3523         }
3524
3525         function sanitize_tag($tag) {
3526                 $tag = trim($tag);
3527
3528                 $tag = mb_strtolower($tag, 'utf-8');
3529
3530                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3531
3532 //              $tag = str_replace('"', "", $tag);
3533 //              $tag = str_replace("+", " ", $tag);
3534                 $tag = str_replace("technorati tag: ", "", $tag);
3535
3536                 return $tag;
3537         }
3538
3539         function get_self_url_prefix() {
3540                 return SELF_URL_PATH;
3541         }
3542
3543         function opml_publish_url($link){
3544
3545                 $url_path = get_self_url_prefix();
3546                 $url_path .= "/opml.php?op=publish&key=" .
3547                         get_feed_access_key($link, 'OPML:Publish', false, $_SESSION["uid"]);
3548
3549                 return $url_path;
3550         }
3551
3552         /**
3553          * Purge a feed contents, marked articles excepted.
3554          *
3555          * @param mixed $link The database connection.
3556          * @param integer $id The id of the feed to purge.
3557          * @return void
3558          */
3559         function clear_feed_articles($link, $id) {
3560
3561                 if ($id != 0) {
3562                         $result = db_query($link, "DELETE FROM ttrss_user_entries
3563                         WHERE feed_id = '$id' AND marked = false AND owner_uid = " . $_SESSION["uid"]);
3564                 } else {
3565                         $result = db_query($link, "DELETE FROM ttrss_user_entries
3566                         WHERE feed_id IS NULL AND marked = false AND owner_uid = " . $_SESSION["uid"]);
3567                 }
3568
3569                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
3570                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
3571
3572                 ccache_update($link, $id, $_SESSION['uid']);
3573         } // function clear_feed_articles
3574
3575         /**
3576          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3577          *
3578          * @return string The Mozilla Firefox feed adding URL.
3579          */
3580         function add_feed_url() {
3581                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3582
3583                 $url_path = get_self_url_prefix() .
3584                         "/backend.php?op=pref-feeds&quiet=1&method=add&feed_url=%s";
3585                 return $url_path;
3586         } // function add_feed_url
3587
3588         function encrypt_password($pass, $salt = '', $mode2 = false) {
3589                 if ($salt && $mode2) {
3590                         return "MODE2:" . hash('sha256', $salt . $pass);
3591                 } else if ($salt) {
3592                         return "SHA1X:" . sha1("$salt:$pass");
3593                 } else {
3594                         return "SHA1:" . sha1($pass);
3595                 }
3596         } // function encrypt_password
3597
3598         function sanitize_article_content($text) {
3599                 # we don't support CDATA sections in articles, they break our own escaping
3600                 $text = preg_replace("/\[\[CDATA/", "", $text);
3601                 $text = preg_replace("/\]\]\>/", "", $text);
3602                 return $text;
3603         }
3604
3605         function load_filters($link, $feed_id, $owner_uid, $action_id = false) {
3606                 $filters = array();
3607
3608                 $cat_id = (int)getFeedCategory($link, $feed_id);
3609
3610                 $result = db_query($link, "SELECT * FROM ttrss_filters2 WHERE
3611                         owner_uid = $owner_uid AND enabled = true");
3612
3613                 while ($line = db_fetch_assoc($result)) {
3614                         $filter_id = $line["id"];
3615
3616                         $result2 = db_query($link, "SELECT
3617                                 r.reg_exp, r.feed_id, r.cat_id, r.cat_filter, t.name AS type_name
3618                                 FROM ttrss_filters2_rules AS r,
3619                                 ttrss_filter_types AS t
3620                                 WHERE
3621                                         (cat_id IS NULL OR cat_id = '$cat_id') AND
3622                                         (feed_id IS NULL OR feed_id = '$feed_id') AND
3623                                         filter_type = t.id AND filter_id = '$filter_id'");
3624
3625                         $rules = array();
3626                         $actions = array();
3627
3628                         while ($rule_line = db_fetch_assoc($result2)) {
3629 #                               print_r($rule_line);
3630
3631                                 $rule = array();
3632                                 $rule["reg_exp"] = $rule_line["reg_exp"];
3633                                 $rule["type"] = $rule_line["type_name"];
3634
3635                                 array_push($rules, $rule);
3636                         }
3637
3638                         $result2 = db_query($link, "SELECT a.action_param,t.name AS type_name
3639                                 FROM ttrss_filters2_actions AS a,
3640                                 ttrss_filter_actions AS t
3641                                 WHERE
3642                                         action_id = t.id AND filter_id = '$filter_id'");
3643
3644                         while ($action_line = db_fetch_assoc($result2)) {
3645 #                               print_r($action_line);
3646
3647                                 $action = array();
3648                                 $action["type"] = $action_line["type_name"];
3649                                 $action["param"] = $action_line["action_param"];
3650
3651                                 array_push($actions, $action);
3652                         }
3653
3654
3655                         $filter = array();
3656                         $filter["match_any_rule"] = sql_bool_to_bool($line["match_any_rule"]);
3657                         $filter["rules"] = $rules;
3658                         $filter["actions"] = $actions;
3659
3660                         if (count($rules) > 0 && count($actions) > 0) {
3661                                 array_push($filters, $filter);
3662                         }
3663                 }
3664
3665                 return $filters;
3666         }
3667
3668         function get_score_pic($score) {
3669                 if ($score > 100) {
3670                         return "score_high.png";
3671                 } else if ($score > 0) {
3672                         return "score_half_high.png";
3673                 } else if ($score < -100) {
3674                         return "score_low.png";
3675                 } else if ($score < 0) {
3676                         return "score_half_low.png";
3677                 } else {
3678                         return "score_neutral.png";
3679                 }
3680         }
3681
3682         function feed_has_icon($id) {
3683                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3684         }
3685
3686         function init_connection($link) {
3687                 if ($link) {
3688
3689                         if (DB_TYPE == "pgsql") {
3690                                 pg_query($link, "set client_encoding = 'UTF-8'");
3691                                 pg_set_client_encoding("UNICODE");
3692                                 pg_query($link, "set datestyle = 'ISO, european'");
3693                                 pg_query($link, "set TIME ZONE 0");
3694                         } else {
3695                                 db_query($link, "SET time_zone = '+0:0'");
3696
3697                                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
3698                                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
3699                                 }
3700                         }
3701                         return true;
3702                 } else {
3703                         print "Unable to connect to database:" . db_last_error();
3704                         return false;
3705                 }
3706         }
3707
3708         /* function ccache_zero($link, $feed_id, $owner_uid) {
3709                 db_query($link, "UPDATE ttrss_counters_cache SET
3710                         value = 0, updated = NOW() WHERE
3711                         feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3712         } */
3713
3714         function ccache_zero_all($link, $owner_uid) {
3715                 db_query($link, "UPDATE ttrss_counters_cache SET
3716                         value = 0 WHERE owner_uid = '$owner_uid'");
3717
3718                 db_query($link, "UPDATE ttrss_cat_counters_cache SET
3719                         value = 0 WHERE owner_uid = '$owner_uid'");
3720         }
3721
3722         function ccache_remove($link, $feed_id, $owner_uid, $is_cat = false) {
3723
3724                 if (!$is_cat) {
3725                         $table = "ttrss_counters_cache";
3726                 } else {
3727                         $table = "ttrss_cat_counters_cache";
3728                 }
3729
3730                 db_query($link, "DELETE FROM $table WHERE
3731                         feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3732
3733         }
3734
3735         function ccache_update_all($link, $owner_uid) {
3736
3737                 if (get_pref($link, 'ENABLE_FEED_CATS', $owner_uid)) {
3738
3739                         $result = db_query($link, "SELECT feed_id FROM ttrss_cat_counters_cache
3740                                 WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
3741
3742                         while ($line = db_fetch_assoc($result)) {
3743                                 ccache_update($link, $line["feed_id"], $owner_uid, true);
3744                         }
3745
3746                         /* We have to manually include category 0 */
3747
3748                         ccache_update($link, 0, $owner_uid, true);
3749
3750                 } else {
3751                         $result = db_query($link, "SELECT feed_id FROM ttrss_counters_cache
3752                                 WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
3753
3754                         while ($line = db_fetch_assoc($result)) {
3755                                 print ccache_update($link, $line["feed_id"], $owner_uid);
3756
3757                         }
3758
3759                 }
3760         }
3761
3762         function ccache_find($link, $feed_id, $owner_uid, $is_cat = false,
3763                 $no_update = false) {
3764
3765                 if (!is_numeric($feed_id)) return;
3766
3767                 if (!$is_cat) {
3768                         $table = "ttrss_counters_cache";
3769                         if ($feed_id > 0) {
3770                                 $tmp_result = db_query($link, "SELECT owner_uid FROM ttrss_feeds
3771                                         WHERE id = '$feed_id'");
3772                                 $owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
3773                         }
3774                 } else {
3775                         $table = "ttrss_cat_counters_cache";
3776                 }
3777
3778                 if (DB_TYPE == "pgsql") {
3779                         $date_qpart = "updated > NOW() - INTERVAL '15 minutes'";
3780                 } else if (DB_TYPE == "mysql") {
3781                         $date_qpart = "updated > DATE_SUB(NOW(), INTERVAL 15 MINUTE)";
3782                 }
3783
3784                 $result = db_query($link, "SELECT value FROM $table
3785                         WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id'
3786                         LIMIT 1");
3787
3788                 if (db_num_rows($result) == 1) {
3789                         return db_fetch_result($result, 0, "value");
3790                 } else {
3791                         if ($no_update) {
3792                                 return -1;
3793                         } else {
3794                                 return ccache_update($link, $feed_id, $owner_uid, $is_cat);
3795                         }
3796                 }
3797
3798         }
3799
3800         function ccache_update($link, $feed_id, $owner_uid, $is_cat = false,
3801                 $update_pcat = true) {
3802
3803                 if (!is_numeric($feed_id)) return;
3804
3805                 if (!$is_cat && $feed_id > 0) {
3806                         $tmp_result = db_query($link, "SELECT owner_uid FROM ttrss_feeds
3807                                 WHERE id = '$feed_id'");
3808                         $owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
3809                 }
3810
3811                 $prev_unread = ccache_find($link, $feed_id, $owner_uid, $is_cat, true);
3812
3813                 /* When updating a label, all we need to do is recalculate feed counters
3814                  * because labels are not cached */
3815
3816                 if ($feed_id < 0) {
3817                         ccache_update_all($link, $owner_uid);
3818                         return;
3819                 }
3820
3821                 if (!$is_cat) {
3822                         $table = "ttrss_counters_cache";
3823                 } else {
3824                         $table = "ttrss_cat_counters_cache";
3825                 }
3826
3827                 if ($is_cat && $feed_id >= 0) {
3828                         if ($feed_id != 0) {
3829                                 $cat_qpart = "cat_id = '$feed_id'";
3830                         } else {
3831                                 $cat_qpart = "cat_id IS NULL";
3832                         }
3833
3834                         /* Recalculate counters for child feeds */
3835
3836                         $result = db_query($link, "SELECT id FROM ttrss_feeds
3837                                                 WHERE owner_uid = '$owner_uid' AND $cat_qpart");
3838
3839                         while ($line = db_fetch_assoc($result)) {
3840                                 ccache_update($link, $line["id"], $owner_uid, false, false);
3841                         }
3842
3843                         $result = db_query($link, "SELECT SUM(value) AS sv
3844                                 FROM ttrss_counters_cache, ttrss_feeds
3845                                 WHERE id = feed_id AND $cat_qpart AND
3846                                 ttrss_feeds.owner_uid = '$owner_uid'");
3847
3848                         $unread = (int) db_fetch_result($result, 0, "sv");
3849
3850                 } else {
3851                         $unread = (int) getFeedArticles($link, $feed_id, $is_cat, true, $owner_uid);
3852                 }
3853
3854                 db_query($link, "BEGIN");
3855
3856                 $result = db_query($link, "SELECT feed_id FROM $table
3857                         WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id' LIMIT 1");
3858
3859                 if (db_num_rows($result) == 1) {
3860                         db_query($link, "UPDATE $table SET
3861                                 value = '$unread', updated = NOW() WHERE
3862                                 feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3863
3864                 } else {
3865                         db_query($link, "INSERT INTO $table
3866                                 (feed_id, value, owner_uid, updated)
3867                                 VALUES
3868                                 ($feed_id, $unread, $owner_uid, NOW())");
3869                 }
3870
3871                 db_query($link, "COMMIT");
3872
3873                 if ($feed_id > 0 && $prev_unread != $unread) {
3874
3875                         if (!$is_cat) {
3876
3877                                 /* Update parent category */
3878
3879                                 if ($update_pcat) {
3880
3881                                         $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
3882                                                 WHERE owner_uid = '$owner_uid' AND id = '$feed_id'");
3883
3884                                         $cat_id = (int) db_fetch_result($result, 0, "cat_id");
3885
3886                                         ccache_update($link, $cat_id, $owner_uid, true);
3887
3888                                 }
3889                         }
3890                 } else if ($feed_id < 0) {
3891                         ccache_update_all($link, $owner_uid);
3892                 }
3893
3894                 return $unread;
3895         }
3896
3897         /* function ccache_cleanup($link, $owner_uid) {
3898
3899                 if (DB_TYPE == "pgsql") {
3900                         db_query($link, "DELETE FROM ttrss_counters_cache AS c1 WHERE
3901                                 (SELECT count(*) FROM ttrss_counters_cache AS c2
3902                                         WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
3903                                         AND owner_uid = '$owner_uid'");
3904
3905                         db_query($link, "DELETE FROM ttrss_cat_counters_cache AS c1 WHERE
3906                                 (SELECT count(*) FROM ttrss_cat_counters_cache AS c2
3907                                         WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
3908                                         AND owner_uid = '$owner_uid'");
3909                 } else {
3910                         db_query($link, "DELETE c1 FROM
3911                                         ttrss_counters_cache AS c1,
3912                                         ttrss_counters_cache AS c2
3913                                 WHERE
3914                                         c1.owner_uid = '$owner_uid' AND
3915                                         c1.owner_uid = c2.owner_uid AND
3916                                         c1.feed_id = c2.feed_id");
3917
3918                         db_query($link, "DELETE c1 FROM
3919                                         ttrss_cat_counters_cache AS c1,
3920                                         ttrss_cat_counters_cache AS c2
3921                                 WHERE
3922                                         c1.owner_uid = '$owner_uid' AND
3923                                         c1.owner_uid = c2.owner_uid AND
3924                                         c1.feed_id = c2.feed_id");
3925
3926                 }
3927         } */
3928
3929         function label_find_id($link, $label, $owner_uid) {
3930                 $result = db_query($link,
3931                         "SELECT id FROM ttrss_labels2 WHERE caption = '$label'
3932                                 AND owner_uid = '$owner_uid' LIMIT 1");
3933
3934                 if (db_num_rows($result) == 1) {
3935                         return db_fetch_result($result, 0, "id");
3936                 } else {
3937                         return 0;
3938                 }
3939         }
3940
3941         function get_article_labels($link, $id) {
3942                 $rv = array();
3943
3944
3945                 $result = db_query($link, "SELECT label_cache FROM
3946                         ttrss_user_entries WHERE ref_id = '$id' AND owner_uid = " .
3947                         $_SESSION["uid"]);
3948
3949                 $label_cache = db_fetch_result($result, 0, "label_cache");
3950
3951                 if ($label_cache) {
3952
3953                         $label_cache = json_decode($label_cache, true);
3954
3955                         if ($label_cache["no-labels"] == 1)
3956                                 return $rv;
3957                         else
3958                                 return $label_cache;
3959                 }
3960
3961                 $result = db_query($link,
3962                         "SELECT DISTINCT label_id,caption,fg_color,bg_color
3963                                 FROM ttrss_labels2, ttrss_user_labels2
3964                         WHERE id = label_id
3965                                 AND article_id = '$id'
3966                                 AND owner_uid = ".$_SESSION["uid"] . "
3967                         ORDER BY caption");
3968
3969                 while ($line = db_fetch_assoc($result)) {
3970                         $rk = array($line["label_id"], $line["caption"], $line["fg_color"],
3971                                 $line["bg_color"]);
3972                         array_push($rv, $rk);
3973                 }
3974
3975                 if (count($rv) > 0)
3976                         label_update_cache($link, $id, $rv);
3977                 else
3978                         label_update_cache($link, $id, array("no-labels" => 1));
3979
3980                 return $rv;
3981         }
3982
3983
3984         function label_find_caption($link, $label, $owner_uid) {
3985                 $result = db_query($link,
3986                         "SELECT caption FROM ttrss_labels2 WHERE id = '$label'
3987                                 AND owner_uid = '$owner_uid' LIMIT 1");
3988
3989                 if (db_num_rows($result) == 1) {
3990                         return db_fetch_result($result, 0, "caption");
3991                 } else {
3992                         return "";
3993                 }
3994         }
3995
3996         function label_update_cache($link, $id, $labels = false, $force = false) {
3997
3998                 if ($force)
3999                         label_clear_cache($link, $id);
4000
4001                 if (!$labels)
4002                         $labels = get_article_labels($link, $id);
4003
4004                 $labels = db_escape_string(json_encode($labels));
4005
4006                 db_query($link, "UPDATE ttrss_user_entries SET
4007                         label_cache = '$labels' WHERE ref_id = '$id'");
4008
4009         }
4010
4011         function label_clear_cache($link, $id) {
4012
4013                 db_query($link, "UPDATE ttrss_user_entries SET
4014                         label_cache = '' WHERE ref_id = '$id'");
4015
4016         }
4017
4018         function label_remove_article($link, $id, $label, $owner_uid) {
4019
4020                 $label_id = label_find_id($link, $label, $owner_uid);
4021
4022                 if (!$label_id) return;
4023
4024                 $result = db_query($link,
4025                         "DELETE FROM ttrss_user_labels2
4026                         WHERE
4027                                 label_id = '$label_id' AND
4028                                 article_id = '$id'");
4029
4030                 label_clear_cache($link, $id);
4031         }
4032
4033         function label_add_article($link, $id, $label, $owner_uid) {
4034
4035                 $label_id = label_find_id($link, $label, $owner_uid);
4036
4037                 if (!$label_id) return;
4038
4039                 $result = db_query($link,
4040                         "SELECT
4041                                 article_id FROM ttrss_labels2, ttrss_user_labels2
4042                         WHERE
4043                                 label_id = id AND
4044                                 label_id = '$label_id' AND
4045                                 article_id = '$id' AND owner_uid = '$owner_uid'
4046                         LIMIT 1");
4047
4048                 if (db_num_rows($result) == 0) {
4049                         db_query($link, "INSERT INTO ttrss_user_labels2
4050                                 (label_id, article_id) VALUES ('$label_id', '$id')");
4051                 }
4052
4053                 label_clear_cache($link, $id);
4054
4055         }
4056
4057         function label_remove($link, $id, $owner_uid) {
4058                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4059
4060                 db_query($link, "BEGIN");
4061
4062                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
4063                         WHERE id = '$id'");
4064
4065                 $caption = db_fetch_result($result, 0, "caption");
4066
4067                 $result = db_query($link, "DELETE FROM ttrss_labels2 WHERE id = '$id'
4068                         AND owner_uid = " . $owner_uid);
4069
4070                 if (db_affected_rows($link, $result) != 0 && $caption) {
4071
4072                         /* Remove access key for the label */
4073
4074                         $ext_id = -11 - $id;
4075
4076                         db_query($link, "DELETE FROM ttrss_access_keys WHERE
4077                                 feed_id = '$ext_id' AND owner_uid = $owner_uid");
4078
4079                         /* Disable filters that reference label being removed */
4080
4081                         db_query($link, "UPDATE ttrss_filters SET
4082                                 enabled = false WHERE action_param = '$caption'
4083                                         AND action_id = 7
4084                                         AND owner_uid = " . $owner_uid);
4085
4086                         /* Remove cached data */
4087
4088                         db_query($link, "UPDATE ttrss_user_entries SET label_cache = ''
4089                                 WHERE label_cache LIKE '%$caption%' AND owner_uid = " . $owner_uid);
4090
4091                 }
4092
4093                 db_query($link, "COMMIT");
4094         }
4095
4096         function label_create($link, $caption, $fg_color = '', $bg_color = '', $owner_uid) {
4097
4098                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
4099
4100                 db_query($link, "BEGIN");
4101
4102                 $result = false;
4103
4104                 $result = db_query($link, "SELECT id FROM ttrss_labels2
4105                         WHERE caption = '$caption' AND owner_uid = $owner_uid");
4106
4107                 if (db_num_rows($result) == 0) {
4108                         $result = db_query($link,
4109                                 "INSERT INTO ttrss_labels2 (caption,owner_uid,fg_color,bg_color)
4110                                         VALUES ('$caption', '$owner_uid', '$fg_color', '$bg_color')");
4111
4112                         $result = db_affected_rows($link, $result) != 0;
4113                 }
4114
4115                 db_query($link, "COMMIT");
4116
4117                 return $result;
4118         }
4119
4120         function format_tags_string($tags, $id) {
4121
4122                 $tags_str = "";
4123                 $tags_nolinks_str = "";
4124
4125                 $num_tags = 0;
4126
4127                 $tag_limit = 6;
4128
4129                 $formatted_tags = array();
4130
4131                 foreach ($tags as $tag) {
4132                         $num_tags++;
4133                         $tag_escaped = str_replace("'", "\\'", $tag);
4134
4135                         if (mb_strlen($tag) > 30) {
4136                                 $tag = truncate_string($tag, 30);
4137                         }
4138
4139                         $tag_str = "<a href=\"javascript:viewfeed('$tag_escaped')\">$tag</a>";
4140
4141                         array_push($formatted_tags, $tag_str);
4142
4143                         $tmp_tags_str = implode(", ", $formatted_tags);
4144
4145                         if ($num_tags == $tag_limit || mb_strlen($tmp_tags_str) > 150) {
4146                                 break;
4147                         }
4148                 }
4149
4150                 $tags_str = implode(", ", $formatted_tags);
4151
4152                 if ($num_tags < count($tags)) {
4153                         $tags_str .= ", &hellip;";
4154                 }
4155
4156                 if ($num_tags == 0) {
4157                         $tags_str = __("no tags");
4158                 }
4159
4160                 return $tags_str;
4161
4162         }
4163
4164         function format_article_labels($labels, $id) {
4165
4166                 $labels_str = "";
4167
4168                 foreach ($labels as $l) {
4169                         $labels_str .= sprintf("<span class='hlLabelRef'
4170                                 style='color : %s; background-color : %s'>%s</span>",
4171                                         $l[2], $l[3], $l[1]);
4172                         }
4173
4174                 return $labels_str;
4175
4176         }
4177
4178         function format_article_note($id, $note) {
4179
4180                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
4181                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
4182                         __('(edit note)')."</div>$note</div>";
4183
4184                 return $str;
4185         }
4186
4187         function toggle_collapse_cat($link, $cat_id, $mode) {
4188                 if ($cat_id > 0) {
4189                         $mode = bool_to_sql_bool($mode);
4190
4191                         db_query($link, "UPDATE ttrss_feed_categories SET
4192                                 collapsed = $mode WHERE id = '$cat_id' AND owner_uid = " .
4193                                 $_SESSION["uid"]);
4194                 } else {
4195                         $pref_name = '';
4196
4197                         switch ($cat_id) {
4198                         case -1:
4199                                 $pref_name = '_COLLAPSED_SPECIAL';
4200                                 break;
4201                         case -2:
4202                                 $pref_name = '_COLLAPSED_LABELS';
4203                                 break;
4204                         case 0:
4205                                 $pref_name = '_COLLAPSED_UNCAT';
4206                                 break;
4207                         }
4208
4209                         if ($pref_name) {
4210                                 if ($mode) {
4211                                         set_pref($link, $pref_name, 'true');
4212                                 } else {
4213                                         set_pref($link, $pref_name, 'false');
4214                                 }
4215                         }
4216                 }
4217         }
4218
4219         function remove_feed($link, $id, $owner_uid) {
4220
4221                 if ($id > 0) {
4222
4223                         /* save starred articles in Archived feed */
4224
4225                         db_query($link, "BEGIN");
4226
4227                         /* prepare feed if necessary */
4228
4229                         $result = db_query($link, "SELECT id FROM ttrss_archived_feeds
4230                                 WHERE id = '$id'");
4231
4232                         if (db_num_rows($result) == 0) {
4233                                 db_query($link, "INSERT INTO ttrss_archived_feeds
4234                                         (id, owner_uid, title, feed_url, site_url)
4235                                 SELECT id, owner_uid, title, feed_url, site_url from ttrss_feeds
4236                                 WHERE id = '$id'");
4237                         }
4238
4239                         db_query($link, "UPDATE ttrss_user_entries SET feed_id = NULL,
4240                                 orig_feed_id = '$id' WHERE feed_id = '$id' AND
4241                                         marked = true AND owner_uid = $owner_uid");
4242
4243                         /* Remove access key for the feed */
4244
4245                         db_query($link, "DELETE FROM ttrss_access_keys WHERE
4246                                 feed_id = '$id' AND owner_uid = $owner_uid");
4247
4248                         /* remove the feed */
4249
4250                         db_query($link, "DELETE FROM ttrss_feeds
4251                                         WHERE id = '$id' AND owner_uid = $owner_uid");
4252
4253                         db_query($link, "COMMIT");
4254
4255                         if (file_exists(ICONS_DIR . "/$id.ico")) {
4256                                 unlink(ICONS_DIR . "/$id.ico");
4257                         }
4258
4259                         ccache_remove($link, $id, $owner_uid);
4260
4261                 } else {
4262                         label_remove($link, -11-$id, $owner_uid);
4263                         ccache_remove($link, -11-$id, $owner_uid);
4264                 }
4265         }
4266
4267         function get_feed_category($link, $feed_cat, $parent_cat_id = false) {
4268                 if ($parent_cat_id) {
4269                         $parent_qpart = "parent_cat = '$parent_cat_id'";
4270                         $parent_insert = "'$parent_cat_id'";
4271                 } else {
4272                         $parent_qpart = "parent_cat IS NULL";
4273                         $parent_insert = "NULL";
4274                 }
4275
4276                 $result = db_query($link,
4277                         "SELECT id FROM ttrss_feed_categories
4278                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
4279
4280                 if (db_num_rows($result) == 0) {
4281                         return false;
4282                 } else {
4283                         return db_fetch_result($result, 0, "id");
4284                 }
4285         }
4286
4287         function add_feed_category($link, $feed_cat, $parent_cat_id = false) {
4288
4289                 if (!$feed_cat) return false;
4290
4291                 db_query($link, "BEGIN");
4292
4293                 if ($parent_cat_id) {
4294                         $parent_qpart = "parent_cat = '$parent_cat_id'";
4295                         $parent_insert = "'$parent_cat_id'";
4296                 } else {
4297                         $parent_qpart = "parent_cat IS NULL";
4298                         $parent_insert = "NULL";
4299                 }
4300
4301                 $result = db_query($link,
4302                         "SELECT id FROM ttrss_feed_categories
4303                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
4304
4305                 if (db_num_rows($result) == 0) {
4306
4307                         $result = db_query($link,
4308                                 "INSERT INTO ttrss_feed_categories (owner_uid,title,parent_cat)
4309                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat', $parent_insert)");
4310
4311                         db_query($link, "COMMIT");
4312
4313                         return true;
4314                 }
4315
4316                 return false;
4317         }
4318
4319         function remove_feed_category($link, $id, $owner_uid) {
4320
4321                 db_query($link, "DELETE FROM ttrss_feed_categories
4322                         WHERE id = '$id' AND owner_uid = $owner_uid");
4323
4324                 ccache_remove($link, $id, $owner_uid, true);
4325         }
4326
4327         function archive_article($link, $id, $owner_uid) {
4328                 db_query($link, "BEGIN");
4329
4330                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
4331                         WHERE ref_id = '$id' AND owner_uid = $owner_uid");
4332
4333                 if (db_num_rows($result) != 0) {
4334
4335                         /* prepare the archived table */
4336
4337                         $feed_id = (int) db_fetch_result($result, 0, "feed_id");
4338
4339                         if ($feed_id) {
4340                                 $result = db_query($link, "SELECT id FROM ttrss_archived_feeds
4341                                         WHERE id = '$feed_id'");
4342
4343                                 if (db_num_rows($result) == 0) {
4344                                         db_query($link, "INSERT INTO ttrss_archived_feeds
4345                                                 (id, owner_uid, title, feed_url, site_url)
4346                                         SELECT id, owner_uid, title, feed_url, site_url from ttrss_feeds
4347                                         WHERE id = '$feed_id'");
4348                                 }
4349
4350                                 db_query($link, "UPDATE ttrss_user_entries
4351                                         SET orig_feed_id = feed_id, feed_id = NULL
4352                                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
4353                         }
4354                 }
4355
4356                 db_query($link, "COMMIT");
4357         }
4358
4359         function getArticleFeed($link, $id) {
4360                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
4361                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
4362
4363                 if (db_num_rows($result) != 0) {
4364                         return db_fetch_result($result, 0, "feed_id");
4365                 } else {
4366                         return 0;
4367                 }
4368         }
4369
4370         /**
4371          * Fixes incomplete URLs by prepending "http://".
4372          * Also replaces feed:// with http://, and
4373          * prepends a trailing slash if the url is a domain name only.
4374          *
4375          * @param string $url Possibly incomplete URL
4376          *
4377          * @return string Fixed URL.
4378          */
4379         function fix_url($url) {
4380                 if (strpos($url, '://') === false) {
4381                         $url = 'http://' . $url;
4382                 } else if (substr($url, 0, 5) == 'feed:') {
4383                         $url = 'http:' . substr($url, 5);
4384                 }
4385
4386                 //prepend slash if the URL has no slash in it
4387                 // "http://www.example" -> "http://www.example/"
4388                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
4389                         $url .= '/';
4390                 }
4391
4392                 if ($url != "http:///")
4393                         return $url;
4394                 else
4395                         return '';
4396         }
4397
4398         function validate_feed_url($url) {
4399                 $parts = parse_url($url);
4400
4401                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
4402
4403         }
4404
4405         function get_article_enclosures($link, $id) {
4406
4407                 $query = "SELECT * FROM ttrss_enclosures
4408                         WHERE post_id = '$id' AND content_url != ''";
4409
4410                 $rv = array();
4411
4412                 $result = db_query($link, $query);
4413
4414                 if (db_num_rows($result) > 0) {
4415                         while ($line = db_fetch_assoc($result)) {
4416                                 array_push($rv, $line);
4417                         }
4418                 }
4419
4420                 return $rv;
4421         }
4422
4423         function api_get_feeds($link, $cat_id, $unread_only, $limit, $offset) {
4424
4425                         $feeds = array();
4426
4427                         /* Labels */
4428
4429                         if ($cat_id == -4 || $cat_id == -2) {
4430                                 $counters = getLabelCounters($link, true);
4431
4432                                 foreach (array_values($counters) as $cv) {
4433
4434                                         $unread = $cv["counter"];
4435
4436                                         if ($unread || !$unread_only) {
4437
4438                                                 $row = array(
4439                                                                 "id" => $cv["id"],
4440                                                                 "title" => $cv["description"],
4441                                                                 "unread" => $cv["counter"],
4442                                                                 "cat_id" => -2,
4443                                                         );
4444
4445                                                 array_push($feeds, $row);
4446                                         }
4447                                 }
4448                         }
4449
4450                         /* Virtual feeds */
4451
4452                         if ($cat_id == -4 || $cat_id == -1) {
4453                                 foreach (array(-1, -2, -3, -4, 0) as $i) {
4454                                         $unread = getFeedUnread($link, $i);
4455
4456                                         if ($unread || !$unread_only) {
4457                                                 $title = getFeedTitle($link, $i);
4458
4459                                                 $row = array(
4460                                                                 "id" => $i,
4461                                                                 "title" => $title,
4462                                                                 "unread" => $unread,
4463                                                                 "cat_id" => -1,
4464                                                         );
4465                                                 array_push($feeds, $row);
4466                                         }
4467
4468                                 }
4469                         }
4470
4471                         /* Real feeds */
4472
4473                         if ($limit) {
4474                                 $limit_qpart = "LIMIT $limit OFFSET $offset";
4475                         } else {
4476                                 $limit_qpart = "";
4477                         }
4478
4479                         if ($cat_id == -4 || $cat_id == -3) {
4480                                 $result = db_query($link, "SELECT
4481                                         id, feed_url, cat_id, title, order_id, ".
4482                                                 SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
4483                                                 FROM ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"] .
4484                                                 " ORDER BY cat_id, title " . $limit_qpart);
4485                         } else {
4486
4487                                 if ($cat_id)
4488                                         $cat_qpart = "cat_id = '$cat_id'";
4489                                 else
4490                                         $cat_qpart = "cat_id IS NULL";
4491
4492                                 $result = db_query($link, "SELECT
4493                                         id, feed_url, cat_id, title, order_id, ".
4494                                                 SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
4495                                                 FROM ttrss_feeds WHERE
4496                                                 $cat_qpart AND owner_uid = " . $_SESSION["uid"] .
4497                                                 " ORDER BY cat_id, title " . $limit_qpart);
4498                         }
4499
4500                         while ($line = db_fetch_assoc($result)) {
4501
4502                                 $unread = getFeedUnread($link, $line["id"]);
4503
4504                                 $has_icon = feed_has_icon($line['id']);
4505
4506                                 if ($unread || !$unread_only) {
4507
4508                                         $row = array(
4509                                                         "feed_url" => $line["feed_url"],
4510                                                         "title" => $line["title"],
4511                                                         "id" => (int)$line["id"],
4512                                                         "unread" => (int)$unread,
4513                                                         "has_icon" => $has_icon,
4514                                                         "cat_id" => (int)$line["cat_id"],
4515                                                         "last_updated" => strtotime($line["last_updated"]),
4516                                                         "order_id" => (int) $line["order_id"],
4517                                                 );
4518
4519                                         array_push($feeds, $row);
4520                                 }
4521                         }
4522
4523                 return $feeds;
4524         }
4525
4526         function api_get_headlines($link, $feed_id, $limit, $offset,
4527                                 $filter, $is_cat, $show_excerpt, $show_content, $view_mode, $order,
4528                                 $include_attachments, $since_id,
4529                                 $search = "", $search_mode = "", $match_on = "") {
4530
4531                         $qfh_ret = queryFeedHeadlines($link, $feed_id, $limit,
4532                                 $view_mode, $is_cat, $search, $search_mode, $match_on,
4533                                 $order, $offset, 0, false, $since_id);
4534
4535                         $result = $qfh_ret[0];
4536                         $feed_title = $qfh_ret[1];
4537
4538                         $headlines = array();
4539
4540                         while ($line = db_fetch_assoc($result)) {
4541                                 $is_updated = ($line["last_read"] == "" &&
4542                                         ($line["unread"] != "t" && $line["unread"] != "1"));
4543
4544                                 $tags = explode(",", $line["tag_cache"]);
4545                                 $labels = json_decode($line["label_cache"], true);
4546
4547                                 //if (!$tags) $tags = get_article_tags($link, $line["id"]);
4548                                 //if (!$labels) $labels = get_article_labels($link, $line["id"]);
4549
4550                                 $headline_row = array(
4551                                                 "id" => (int)$line["id"],
4552                                                 "unread" => sql_bool_to_bool($line["unread"]),
4553                                                 "marked" => sql_bool_to_bool($line["marked"]),
4554                                                 "published" => sql_bool_to_bool($line["published"]),
4555                                                 "updated" => strtotime($line["updated"]),
4556                                                 "is_updated" => $is_updated,
4557                                                 "title" => $line["title"],
4558                                                 "link" => $line["link"],
4559                                                 "feed_id" => $line["feed_id"],
4560                                                 "tags" => $tags,
4561                                         );
4562
4563                                         if ($include_attachments)
4564                                                 $headline_row['attachments'] = get_article_enclosures($link,
4565                                                         $line['id']);
4566
4567                                 if ($show_excerpt) {
4568                                         $excerpt = truncate_string(strip_tags($line["content_preview"]), 100);
4569                                         $headline_row["excerpt"] = $excerpt;
4570                                 }
4571
4572                                 if ($show_content) {
4573                                         $headline_row["content"] = $line["content_preview"];
4574                                 }
4575
4576                                 // unify label output to ease parsing
4577                                 if ($labels["no-labels"] == 1) $labels = array();
4578
4579                                 $headline_row["labels"] = $labels;
4580
4581                                 $headline_row["feed_title"] = $line["feed_title"];
4582
4583                                 array_push($headlines, $headline_row);
4584                         }
4585
4586                         return $headlines;
4587         }
4588
4589         function generate_error_feed($link, $error) {
4590                 $reply = array();
4591
4592                 $reply['headlines']['id'] = -6;
4593                 $reply['headlines']['is_cat'] = false;
4594
4595                 $reply['headlines']['toolbar'] = '';
4596                 $reply['headlines']['content'] = "<div class='whiteBox'>". $error . "</div>";
4597
4598                 $reply['headlines-info'] = array("count" => 0,
4599                         "vgroup_last_feed" => '',
4600                         "unread" => 0,
4601                         "disable_cache" => true);
4602
4603                 return $reply;
4604         }
4605
4606
4607         function generate_dashboard_feed($link) {
4608                 $reply = array();
4609
4610                 $reply['headlines']['id'] = -5;
4611                 $reply['headlines']['is_cat'] = false;
4612
4613                 $reply['headlines']['toolbar'] = '';
4614                 $reply['headlines']['content'] = "<div class='whiteBox'>".__('No feed selected.');
4615
4616                 $reply['headlines']['content'] .= "<p class=\"small\"><span class=\"insensitive\">";
4617
4618                 $result = db_query($link, "SELECT ".SUBSTRING_FOR_DATE."(MAX(last_updated), 1, 19) AS last_updated FROM ttrss_feeds
4619                         WHERE owner_uid = " . $_SESSION['uid']);
4620
4621                 $last_updated = db_fetch_result($result, 0, "last_updated");
4622                 $last_updated = make_local_datetime($link, $last_updated, false);
4623
4624                 $reply['headlines']['content'] .= sprintf(__("Feeds last updated at %s"), $last_updated);
4625
4626                 $result = db_query($link, "SELECT COUNT(id) AS num_errors
4627                         FROM ttrss_feeds WHERE last_error != '' AND owner_uid = ".$_SESSION["uid"]);
4628
4629                 $num_errors = db_fetch_result($result, 0, "num_errors");
4630
4631                 if ($num_errors > 0) {
4632                         $reply['headlines']['content'] .= "<br/>";
4633                         $reply['headlines']['content'] .= "<a class=\"insensitive\" href=\"#\" onclick=\"showFeedsWithErrors()\">".
4634                                 __('Some feeds have update errors (click for details)')."</a>";
4635                 }
4636                 $reply['headlines']['content'] .= "</span></p>";
4637
4638                 $reply['headlines-info'] = array("count" => 0,
4639                         "vgroup_last_feed" => '',
4640                         "unread" => 0,
4641                         "disable_cache" => true);
4642
4643                 return $reply;
4644         }
4645
4646         function save_email_address($link, $email) {
4647                 // FIXME: implement persistent storage of emails
4648
4649                 if (!$_SESSION['stored_emails'])
4650                         $_SESSION['stored_emails'] = array();
4651
4652                 if (!in_array($email, $_SESSION['stored_emails']))
4653                         array_push($_SESSION['stored_emails'], $email);
4654         }
4655
4656         function update_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
4657                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4658
4659                 $sql_is_cat = bool_to_sql_bool($is_cat);
4660
4661                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
4662                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
4663                         AND owner_uid = " . $owner_uid);
4664
4665                 if (db_num_rows($result) == 1) {
4666                         $key = db_escape_string(sha1(uniqid(rand(), true)));
4667
4668                         db_query($link, "UPDATE ttrss_access_keys SET access_key = '$key'
4669                                 WHERE feed_id = '$feed_id' AND is_cat = $sql_is_cat
4670                                 AND owner_uid = " . $owner_uid);
4671
4672                         return $key;
4673
4674                 } else {
4675                         return get_feed_access_key($link, $feed_id, $is_cat, $owner_uid);
4676                 }
4677         }
4678
4679         function get_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
4680
4681                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4682
4683                 $sql_is_cat = bool_to_sql_bool($is_cat);
4684
4685                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
4686                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
4687                         AND owner_uid = " . $owner_uid);
4688
4689                 if (db_num_rows($result) == 1) {
4690                         return db_fetch_result($result, 0, "access_key");
4691                 } else {
4692                         $key = db_escape_string(sha1(uniqid(rand(), true)));
4693
4694                         $result = db_query($link, "INSERT INTO ttrss_access_keys
4695                                 (access_key, feed_id, is_cat, owner_uid)
4696                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
4697
4698                         return $key;
4699                 }
4700                 return false;
4701         }
4702
4703         /**
4704          * Extracts RSS/Atom feed URLs from the given HTML URL.
4705          *
4706          * @param string $url HTML page URL
4707          *
4708          * @return array Array of feeds. Key is the full URL, value the title
4709          */
4710         function get_feeds_from_html($url, $login = false, $pass = false)
4711         {
4712                 $url     = fix_url($url);
4713                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
4714
4715                 libxml_use_internal_errors(true);
4716
4717                 $content = @fetch_file_contents($url, false, $login, $pass);
4718
4719                 $doc = new DOMDocument();
4720                 $doc->loadHTML($content);
4721                 $xpath = new DOMXPath($doc);
4722                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
4723                 $feedUrls = array();
4724                 foreach ($entries as $entry) {
4725                         if ($entry->hasAttribute('href')) {
4726                                 $title = $entry->getAttribute('title');
4727                                 if ($title == '') {
4728                                         $title = $entry->getAttribute('type');
4729                                 }
4730                                 $feedUrl = rewrite_relative_url(
4731                                         $baseUrl, $entry->getAttribute('href')
4732                                 );
4733                                 $feedUrls[$feedUrl] = $title;
4734                         }
4735                 }
4736                 return $feedUrls;
4737         }
4738
4739         /**
4740          * Checks if the content behind the given URL is a HTML file
4741          *
4742          * @param string $url URL to check
4743          *
4744          * @return boolean True if the URL contains HTML content
4745          */
4746         function url_is_html($url, $login = false, $pass = false) {
4747                 $content = substr(fetch_file_contents($url, false, $login, $pass), 0, 1000);
4748
4749                 if (stripos($content, '<html>') === false
4750                         && stripos($content, '<html ') === false
4751                 ) {
4752                         return false;
4753                 }
4754
4755                 return true;
4756         }
4757
4758         function print_label_select($link, $name, $value, $attributes = "") {
4759
4760                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
4761                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
4762
4763                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
4764                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
4765
4766                 while ($line = db_fetch_assoc($result)) {
4767
4768                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
4769
4770                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
4771                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
4772
4773                 }
4774
4775 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
4776
4777                 print "</select>";
4778
4779
4780         }
4781
4782         function format_article_enclosures($link, $id, $always_display_enclosures,
4783                                         $article_content) {
4784
4785                 $result = get_article_enclosures($link, $id);
4786                 $rv = '';
4787
4788                 if (count($result) > 0) {
4789
4790                         $entries_html = array();
4791                         $entries = array();
4792
4793                         foreach ($result as $line) {
4794
4795                                 $url = $line["content_url"];
4796                                 $ctype = $line["content_type"];
4797
4798                                 if (!$ctype) $ctype = __("unknown type");
4799
4800                                 $filename = substr($url, strrpos($url, "/")+1);
4801
4802 #                               $player = format_inline_player($link, $url, $ctype);
4803
4804 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
4805 #                                       $filename . " (" . $ctype . ")" . "</a>";
4806
4807                                 $entry = "<div onclick=\"window.open('".htmlspecialchars($url)."')\"
4808                                         dojoType=\"dijit.MenuItem\">$filename ($ctype)</div>";
4809
4810                                 array_push($entries_html, $entry);
4811
4812                                 $entry = array();
4813
4814                                 $entry["type"] = $ctype;
4815                                 $entry["filename"] = $filename;
4816                                 $entry["url"] = $url;
4817
4818                                 array_push($entries, $entry);
4819                         }
4820
4821                         if (!get_pref($link, "STRIP_IMAGES")) {
4822                                 if ($always_display_enclosures ||
4823                                                         !preg_match("/<img/i", $article_content)) {
4824
4825                                         foreach ($entries as $entry) {
4826
4827                                                 if (preg_match("/image/", $entry["type"]) ||
4828                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
4829
4830                                                                 $rv .= "<p><img
4831                                                                 alt=\"".htmlspecialchars($entry["filename"])."\"
4832                                                                 src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
4833
4834                                                 }
4835                                         }
4836                                 }
4837                         }
4838
4839                         $rv .= "<br/><div dojoType=\"dijit.form.DropDownButton\">".
4840                                 "<span>" . __('Attachments')."</span>";
4841                         $rv .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
4842
4843                         foreach ($entries_html as $entry) { $rv .= $entry; };
4844
4845                         $rv .= "</div></div>";
4846                 }
4847
4848                 return $rv;
4849         }
4850
4851         function getLastArticleId($link) {
4852                 $result = db_query($link, "SELECT MAX(ref_id) AS id FROM ttrss_user_entries
4853                         WHERE owner_uid = " . $_SESSION["uid"]);
4854
4855                 if (db_num_rows($result) == 1) {
4856                         return db_fetch_result($result, 0, "id");
4857                 } else {
4858                         return -1;
4859                 }
4860         }
4861
4862         function build_url($parts) {
4863                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
4864         }
4865
4866         /**
4867          * Converts a (possibly) relative URL to a absolute one.
4868          *
4869          * @param string $url     Base URL (i.e. from where the document is)
4870          * @param string $rel_url Possibly relative URL in the document
4871          *
4872          * @return string Absolute URL
4873          */
4874         function rewrite_relative_url($url, $rel_url) {
4875                 if (strpos($rel_url, "magnet:") === 0) {
4876                         return $rel_url;
4877                 } else if (strpos($rel_url, "://") !== false) {
4878                         return $rel_url;
4879                 } else if (strpos($rel_url, "//") === 0) {
4880                         # protocol-relative URL (rare but they exist)
4881                         return $rel_url;
4882                 } else if (strpos($rel_url, "/") === 0)
4883                 {
4884                         $parts = parse_url($url);
4885                         $parts['path'] = $rel_url;
4886
4887                         return build_url($parts);
4888
4889                 } else {
4890                         $parts = parse_url($url);
4891                         if (!isset($parts['path'])) {
4892                                 $parts['path'] = '/';
4893                         }
4894                         $dir = $parts['path'];
4895                         if (substr($dir, -1) !== '/') {
4896                                 $dir = dirname($parts['path']);
4897                                 $dir !== '/' && $dir .= '/';
4898                         }
4899                         $parts['path'] = $dir . $rel_url;
4900
4901                         return build_url($parts);
4902                 }
4903         }
4904
4905         function sphinx_search($query, $offset = 0, $limit = 30) {
4906                 require_once 'lib/sphinxapi.php';
4907
4908                 $sphinxClient = new SphinxClient();
4909
4910                 $sphinxClient->SetServer('localhost', 9312);
4911                 $sphinxClient->SetConnectTimeout(1);
4912
4913                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
4914                         'feed_title' => 20));
4915
4916                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
4917                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
4918                 $sphinxClient->SetLimits($offset, $limit, 1000);
4919                 $sphinxClient->SetArrayResult(false);
4920                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
4921
4922                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
4923
4924                 $ids = array();
4925
4926                 if (is_array($result['matches'])) {
4927                         foreach (array_keys($result['matches']) as $int_id) {
4928                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
4929                                 array_push($ids, $ref_id);
4930                         }
4931                 }
4932
4933                 return $ids;
4934         }
4935
4936         function cleanup_tags($link, $days = 14, $limit = 1000) {
4937
4938                 if (DB_TYPE == "pgsql") {
4939                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
4940                 } else if (DB_TYPE == "mysql") {
4941                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
4942                 }
4943
4944                 $tags_deleted = 0;
4945
4946                 while ($limit > 0) {
4947                         $limit_part = 500;
4948
4949                         $query = "SELECT ttrss_tags.id AS id
4950                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
4951                                 WHERE post_int_id = int_id AND $interval_query AND
4952                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
4953
4954                         $result = db_query($link, $query);
4955
4956                         $ids = array();
4957
4958                         while ($line = db_fetch_assoc($result)) {
4959                                 array_push($ids, $line['id']);
4960                         }
4961
4962                         if (count($ids) > 0) {
4963                                 $ids = join(",", $ids);
4964                                 print ".";
4965
4966                                 $tmp_result = db_query($link, "DELETE FROM ttrss_tags WHERE id IN ($ids)");
4967                                 $tags_deleted += db_affected_rows($link, $tmp_result);
4968                         } else {
4969                                 break;
4970                         }
4971
4972                         $limit -= $limit_part;
4973                 }
4974
4975                 print "\n";
4976
4977                 return $tags_deleted;
4978         }
4979
4980         function print_user_stylesheet($link) {
4981                 $value = get_pref($link, 'USER_STYLESHEET');
4982
4983                 if ($value) {
4984                         print "<style type=\"text/css\">";
4985                         print str_replace("<br/>", "\n", $value);
4986                         print "</style>";
4987                 }
4988
4989         }
4990
4991 /*      function rewrite_urls($line) {
4992                 global $url_regex;
4993
4994                 $urls = null;
4995
4996                 $result = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
4997                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $line);
4998
4999                 return $result;
5000         } */
5001
5002         function rewrite_urls($html) {
5003                 libxml_use_internal_errors(true);
5004
5005                 $charset_hack = '<head>
5006                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
5007                 </head>';
5008
5009                 $doc = new DOMDocument();
5010                 $doc->loadHTML($charset_hack . $html);
5011                 $xpath = new DOMXPath($doc);
5012
5013                 $entries = $xpath->query('//*/text()');
5014
5015                 foreach ($entries as $entry) {
5016                         if (strstr($entry->wholeText, "://") !== false) {
5017                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
5018                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
5019
5020                                 if ($text != $entry->wholeText) {
5021                                         $cdoc = new DOMDocument();
5022                                         $cdoc->loadHTML($charset_hack . $text);
5023
5024
5025                                         foreach ($cdoc->childNodes as $cnode) {
5026                                                 $cnode = $doc->importNode($cnode, true);
5027
5028                                                 if ($cnode) {
5029                                                         $entry->parentNode->insertBefore($cnode);
5030                                                 }
5031                                         }
5032
5033                                         $entry->parentNode->removeChild($entry);
5034
5035                                 }
5036                         }
5037                 }
5038
5039                 $node = $doc->getElementsByTagName('body')->item(0);
5040
5041                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
5042                 if ($node)
5043                         return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
5044                 else
5045                         return $html;
5046         }
5047
5048         function filter_to_sql($filter) {
5049                 $query = array();
5050
5051                 if (DB_TYPE == "pgsql")
5052                         $reg_qpart = "~";
5053                 else
5054                         $reg_qpart = "REGEXP";
5055
5056                 foreach ($filter["rules"] AS $rule) {
5057                         $regexp_valid = preg_match('/' . $rule['reg_exp'] . '/',
5058                                 $rule['reg_exp']) !== FALSE;
5059
5060                         if ($regexp_valid) {
5061
5062                                 $rule['reg_exp'] = db_escape_string($rule['reg_exp']);
5063
5064                                 switch ($rule["type"]) {
5065                                         case "title":
5066                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
5067                                                         $rule['reg_exp'] . "')";
5068                                                 break;
5069                                         case "content":
5070                                                 $qpart = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
5071                                                         $rule['reg_exp'] . "')";
5072                                                 break;
5073                                         case "both":
5074                                                 $qpart = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
5075                                                         $rule['reg_exp'] . "') OR LOWER(" .
5076                                                         "ttrss_entries.content) $reg_qpart LOWER('" . $rule['reg_exp'] . "')";
5077                                                 break;
5078                                         case "tag":
5079                                                 $qpart = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
5080                                                         $rule['reg_exp'] . "')";
5081                                                 break;
5082                                         case "link":
5083                                                 $qpart = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
5084                                                         $rule['reg_exp'] . "')";
5085                                                 break;
5086                                         case "author":
5087                                                 $qpart = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
5088                                                         $rule['reg_exp'] . "')";
5089                                                 break;
5090                                 }
5091
5092                                 if (isset($rule["feed_id"]) && $rule["feed_id"] > 0) {
5093                                         $qpart .= " AND feed_id = " . db_escape_string($rule["feed_id"]);
5094                                 }
5095
5096                                 if (isset($rule["cat_id"])) {
5097                                         $qpart .= " AND cat_id " . ($rule["cat_id"] ? '= ' . $rule["cat_id"] : 'IS NULL');
5098                                 }
5099
5100                                 array_push($query, "($qpart)");
5101
5102                         }
5103                 }
5104
5105                 if (count($query) > 0) {
5106                         return "(" . join($filter["match_any_rule"] ? "OR" : "AND", $query) . ")";
5107                 } else {
5108                         return "(false)";
5109                 }
5110         }
5111
5112         // Status codes:
5113         // -1  - never connected
5114         // 0   - no data received
5115         // 1   - data received successfully
5116         // 2   - did not receive valid data
5117         // >10 - server error, code + 10 (e.g. 16 means server error 6)
5118
5119         function get_linked_feeds($link, $instance_id = false) {
5120                 if ($instance_id)
5121                         $instance_qpart = "id = '$instance_id' AND ";
5122                 else
5123                         $instance_qpart = "";
5124
5125                 if (DB_TYPE == "pgsql") {
5126                         $date_qpart = "last_connected < NOW() - INTERVAL '6 hours'";
5127                 } else {
5128                         $date_qpart = "last_connected < DATE_SUB(NOW(), INTERVAL 6 HOUR)";
5129                 }
5130
5131                 $result = db_query($link, "SELECT id, access_key, access_url FROM ttrss_linked_instances
5132                         WHERE $instance_qpart $date_qpart ORDER BY last_connected");
5133
5134                 while ($line = db_fetch_assoc($result)) {
5135                         $id = $line['id'];
5136
5137                         _debug("Updating: " . $line['access_url'] . " ($id)");
5138
5139                         $fetch_url = $line['access_url'] . '/public.php?op=fbexport';
5140                         $post_query = 'key=' . $line['access_key'];
5141
5142                         $feeds = fetch_file_contents($fetch_url, false, false, false, $post_query);
5143
5144                         // try doing it the old way
5145                         if (!$feeds) {
5146                                 $fetch_url = $line['access_url'] . '/backend.php?op=fbexport';
5147                                 $feeds = fetch_file_contents($fetch_url, false, false, false, $post_query);
5148                         }
5149
5150                         if ($feeds) {
5151                                 $feeds = json_decode($feeds, true);
5152
5153                                 if ($feeds) {
5154                                         if ($feeds['error']) {
5155                                                 $status = $feeds['error']['code'] + 10;
5156                                         } else {
5157                                                 $status = 1;
5158
5159                                                 if (count($feeds['feeds']) > 0) {
5160
5161                                                         db_query($link, "DELETE FROM ttrss_linked_feeds
5162                                                                 WHERE instance_id = '$id'");
5163
5164                                                         foreach ($feeds['feeds'] as $feed) {
5165                                                                 $feed_url = db_escape_string($feed['feed_url']);
5166                                                                 $title = db_escape_string($feed['title']);
5167                                                                 $subscribers = db_escape_string($feed['subscribers']);
5168                                                                 $site_url = db_escape_string($feed['site_url']);
5169
5170                                                                 db_query($link, "INSERT INTO ttrss_linked_feeds
5171                                                                         (feed_url, site_url, title, subscribers, instance_id, created, updated)
5172                                                                 VALUES
5173                                                                         ('$feed_url', '$site_url', '$title', '$subscribers', '$id', NOW(), NOW())");
5174                                                         }
5175                                                 } else {
5176                                                         // received 0 feeds, this might indicate that
5177                                                         // the instance on the other hand is rebuilding feedbrowser cache
5178                                                         // we will try again later
5179
5180                                                         // TODO: maybe perform expiration based on updated here?
5181                                                 }
5182
5183                                                 _debug("Processed " . count($feeds['feeds']) . " feeds.");
5184                                         }
5185                                 } else {
5186                                         $status = 2;
5187                                 }
5188
5189                         } else {
5190                                 $status = 0;
5191                         }
5192
5193                         _debug("Status: $status");
5194
5195                         db_query($link, "UPDATE ttrss_linked_instances SET
5196                                 last_status_out = '$status', last_connected = NOW() WHERE id = '$id'");
5197
5198                 }
5199         }
5200
5201         function make_feed_browser($link, $search, $limit, $mode = 1) {
5202
5203                 $owner_uid = $_SESSION["uid"];
5204                 $rv = '';
5205
5206                 if ($search) {
5207                         $search_qpart = "AND (UPPER(feed_url) LIKE UPPER('%$search%') OR
5208                                                 UPPER(title) LIKE UPPER('%$search%'))";
5209                 } else {
5210                         $search_qpart = "";
5211                 }
5212
5213                 if ($mode == 1) {
5214                         /* $result = db_query($link, "SELECT feed_url, subscribers FROM
5215                          ttrss_feedbrowser_cache WHERE (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
5216                         WHERE tf.feed_url = ttrss_feedbrowser_cache.feed_url
5217                         AND owner_uid = '$owner_uid') $search_qpart
5218                         ORDER BY subscribers DESC LIMIT $limit"); */
5219
5220                         $result = db_query($link, "SELECT feed_url, site_url, title, SUM(subscribers) AS subscribers FROM
5221                                                 (SELECT feed_url, site_url, title, subscribers FROM ttrss_feedbrowser_cache UNION ALL
5222                                                         SELECT feed_url, site_url, title, subscribers FROM ttrss_linked_feeds) AS qqq
5223                                                 WHERE
5224                                                         (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
5225                                                                 WHERE tf.feed_url = qqq.feed_url
5226                                                                         AND owner_uid = '$owner_uid') $search_qpart
5227                                                 GROUP BY feed_url, site_url, title ORDER BY subscribers DESC LIMIT $limit");
5228
5229                 } else if ($mode == 2) {
5230                         $result = db_query($link, "SELECT *,
5231                                                 (SELECT COUNT(*) FROM ttrss_user_entries WHERE
5232                                                         orig_feed_id = ttrss_archived_feeds.id) AS articles_archived
5233                                                 FROM
5234                                                         ttrss_archived_feeds
5235                                                 WHERE
5236                                                 (SELECT COUNT(*) FROM ttrss_feeds
5237                                                         WHERE ttrss_feeds.feed_url = ttrss_archived_feeds.feed_url AND
5238                                                                 owner_uid = '$owner_uid') = 0   AND
5239                                                 owner_uid = '$owner_uid' $search_qpart
5240                                                 ORDER BY id DESC LIMIT $limit");
5241                 }
5242
5243                 $feedctr = 0;
5244
5245                 while ($line = db_fetch_assoc($result)) {
5246
5247                         if ($mode == 1) {
5248
5249                                 $feed_url = htmlspecialchars($line["feed_url"]);
5250                                 $site_url = htmlspecialchars($line["site_url"]);
5251                                 $subscribers = $line["subscribers"];
5252
5253                                 $check_box = "<input onclick='toggleSelectListRow2(this)'
5254                                                         dojoType=\"dijit.form.CheckBox\"
5255                                                         type=\"checkbox\" \">";
5256
5257                                 $class = ($feedctr % 2) ? "even" : "odd";
5258
5259                                 $site_url = "<a target=\"_blank\"
5260                                                         href=\"$site_url\">
5261                                                         <span class=\"fb_feedTitle\">".
5262                                 htmlspecialchars($line["title"])."</span></a>";
5263
5264                                 $feed_url = "<a target=\"_blank\" class=\"fb_feedUrl\"
5265                                                         href=\"$feed_url\"><img src='images/feed-icon-12x12.png'
5266                                                         style='vertical-align : middle'></a>";
5267
5268                                 $rv .= "<li>$check_box $feed_url $site_url".
5269                                                         "&nbsp;<span class='subscribers'>($subscribers)</span></li>";
5270
5271                         } else if ($mode == 2) {
5272                                 $feed_url = htmlspecialchars($line["feed_url"]);
5273                                 $site_url = htmlspecialchars($line["site_url"]);
5274                                 $title = htmlspecialchars($line["title"]);
5275
5276                                 $check_box = "<input onclick='toggleSelectListRow2(this)' dojoType=\"dijit.form.CheckBox\"
5277                                                         type=\"checkbox\">";
5278
5279                                 $class = ($feedctr % 2) ? "even" : "odd";
5280
5281                                 if ($line['articles_archived'] > 0) {
5282                                         $archived = sprintf(__("%d archived articles"), $line['articles_archived']);
5283                                         $archived = "&nbsp;<span class='subscribers'>($archived)</span>";
5284                                 } else {
5285                                         $archived = '';
5286                                 }
5287
5288                                 $site_url = "<a target=\"_blank\"
5289                                                         href=\"$site_url\">
5290                                                         <span class=\"fb_feedTitle\">".
5291                                 htmlspecialchars($line["title"])."</span></a>";
5292
5293                                 $feed_url = "<a target=\"_blank\" class=\"fb_feedUrl\"
5294                                                         href=\"$feed_url\"><img src='images/feed-icon-12x12.png'
5295                                                         style='vertical-align : middle'></a>";
5296
5297
5298                                 $rv .= "<li id=\"FBROW-".$line["id"]."\">".
5299                                                         "$check_box $feed_url $site_url $archived</li>";
5300                         }
5301
5302                         ++$feedctr;
5303                 }
5304
5305                 if ($feedctr == 0) {
5306                         $rv .= "<li style=\"text-align : center\"><p>".__('No feeds found.')."</p></li>";
5307                 }
5308
5309                 return $rv;
5310         }
5311
5312         if (!function_exists('gzdecode')) {
5313                 function gzdecode($string) { // no support for 2nd argument
5314                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
5315                                 base64_encode($string));
5316                 }
5317         }
5318
5319         function perform_data_import($link, $filename, $owner_uid) {
5320
5321                 $num_imported = 0;
5322                 $num_processed = 0;
5323                 $num_feeds_created = 0;
5324
5325                 $doc = @DOMDocument::load($filename);
5326
5327                 if (!$doc) {
5328                         $contents = file_get_contents($filename);
5329
5330                         if ($contents) {
5331                                 $data = @gzuncompress($contents);
5332                         }
5333
5334                         if (!$data) {
5335                                 $data = @gzdecode($contents);
5336                         }
5337
5338                         if ($data)
5339                                 $doc = DOMDocument::loadXML($data);
5340                 }
5341
5342                 if ($doc) {
5343
5344                         $xpath = new DOMXpath($doc);
5345
5346                         $container = $doc->firstChild;
5347
5348                         if ($container && $container->hasAttribute('schema-version')) {
5349                                 $schema_version = $container->getAttribute('schema-version');
5350
5351                                 if ($schema_version != SCHEMA_VERSION) {
5352                                         print "<p>" .__("Could not import: incorrect schema version.") . "</p>";
5353                                         return;
5354                                 }
5355
5356                         } else {
5357                                 print "<p>" . __("Could not import: unrecognized document format.") . "</p>";
5358                                 return;
5359                         }
5360
5361                         $articles = $xpath->query("//article");
5362
5363                         foreach ($articles as $article_node) {
5364                                 if ($article_node->childNodes) {
5365
5366                                         $ref_id = 0;
5367
5368                                         $article = array();
5369
5370                                         foreach ($article_node->childNodes as $child) {
5371                                                 if ($child->nodeName != 'label_cache')
5372                                                         $article[$child->nodeName] = db_escape_string($child->nodeValue);
5373                                                 else
5374                                                         $article[$child->nodeName] = $child->nodeValue;
5375                                         }
5376
5377                                         //print_r($article);
5378
5379                                         if ($article['guid']) {
5380
5381                                                 ++$num_processed;
5382
5383                                                 //db_query($link, "BEGIN");
5384
5385                                                 //print 'GUID:' . $article['guid'] . "\n";
5386
5387                                                 $result = db_query($link, "SELECT id FROM ttrss_entries
5388                                                         WHERE guid = '".$article['guid']."'");
5389
5390                                                 if (db_num_rows($result) == 0) {
5391
5392                                                         $result = db_query($link,
5393                                                                 "INSERT INTO ttrss_entries
5394                                                                         (title,
5395                                                                         guid,
5396                                                                         link,
5397                                                                         updated,
5398                                                                         content,
5399                                                                         content_hash,
5400                                                                         no_orig_date,
5401                                                                         date_updated,
5402                                                                         date_entered,
5403                                                                         comments,
5404                                                                         num_comments,
5405                                                                         author)
5406                                                                 VALUES
5407                                                                         ('".$article['title']."',
5408                                                                         '".$article['guid']."',
5409                                                                         '".$article['link']."',
5410                                                                         '".$article['updated']."',
5411                                                                         '".$article['content']."',
5412                                                                         '".sha1($article['content'])."',
5413                                                                         false,
5414                                                                         NOW(),
5415                                                                         NOW(),
5416                                                                         '',
5417                                                                         '0',
5418                                                                         '')");
5419
5420                                                         $result = db_query($link, "SELECT id FROM ttrss_entries
5421                                                                 WHERE guid = '".$article['guid']."'");
5422
5423                                                         if (db_num_rows($result) != 0) {
5424                                                                 $ref_id = db_fetch_result($result, 0, "id");
5425                                                         }
5426
5427                                                 } else {
5428                                                         $ref_id = db_fetch_result($result, 0, "id");
5429                                                 }
5430
5431                                                 //print "Got ref ID: $ref_id\n";
5432
5433                                                 if ($ref_id) {
5434
5435                                                         $feed_url = $article['feed_url'];
5436                                                         $feed_title = $article['feed_title'];
5437
5438                                                         $feed = 'NULL';
5439
5440                                                         if ($feed_url && $feed_title) {
5441                                                                 $result = db_query($link, "SELECT id FROM ttrss_feeds
5442                                                                         WHERE feed_url = '$feed_url' AND owner_uid = '$owner_uid'");
5443
5444                                                                 if (db_num_rows($result) != 0) {
5445                                                                         $feed = db_fetch_result($result, 0, "id");
5446                                                                 } else {
5447                                                                         // try autocreating feed in Uncategorized...
5448
5449                                                                         $result = db_query($link, "INSERT INTO ttrss_feeds (owner_uid,
5450                                                                                 feed_url, title) VALUES ($owner_uid, '$feed_url', '$feed_title')");
5451
5452                                                                         $result = db_query($link, "SELECT id FROM ttrss_feeds
5453                                                                                 WHERE feed_url = '$feed_url' AND owner_uid = '$owner_uid'");
5454
5455                                                                         if (db_num_rows($result) != 0) {
5456                                                                                 ++$num_feeds_created;
5457
5458                                                                                 $feed = db_fetch_result($result, 0, "id");
5459                                                                         }
5460                                                                 }
5461                                                         }
5462
5463                                                         if ($feed != 'NULL')
5464                                                                 $feed_qpart = "feed_id = $feed";
5465                                                         else
5466                                                                 $feed_qpart = "feed_id IS NULL";
5467
5468                                                         //print "$ref_id / $feed / " . $article['title'] . "\n";
5469
5470                                                         $result = db_query($link, "SELECT int_id FROM ttrss_user_entries
5471                                                                 WHERE ref_id = '$ref_id' AND owner_uid = '$owner_uid' AND $feed_qpart");
5472
5473                                                         if (db_num_rows($result) == 0) {
5474
5475                                                                 $marked = bool_to_sql_bool(sql_bool_to_bool($article['marked']));
5476                                                                 $published = bool_to_sql_bool(sql_bool_to_bool($article['published']));
5477                                                                 $score = (int) $article['score'];
5478
5479                                                                 $tag_cache = $article['tag_cache'];
5480                                                                 $label_cache = db_escape_string($article['label_cache']);
5481                                                                 $note = $article['note'];
5482
5483                                                                 //print "Importing " . $article['title'] . "<br/>";
5484
5485                                                                 ++$num_imported;
5486
5487                                                                 $result = db_query($link,
5488                                                                         "INSERT INTO ttrss_user_entries
5489                                                                         (ref_id, owner_uid, feed_id, unread, last_read, marked,
5490                                                                                 published, score, tag_cache, label_cache, uuid, note)
5491                                                                         VALUES ($ref_id, $owner_uid, $feed, false,
5492                                                                                 NULL, $marked, $published, $score, '$tag_cache',
5493                                                                                         '$label_cache', '', '$note')");
5494
5495                                                                 $label_cache = json_decode($label_cache, true);
5496
5497                                                                 if (is_array($label_cache) && $label_cache["no-labels"] != 1) {
5498                                                                         foreach ($label_cache as $label) {
5499
5500                                                                                 label_create($link, $label[1],
5501                                                                                         $label[2], $label[3], $owner_uid);
5502
5503                                                                                 label_add_article($link, $ref_id, $label[1], $owner_uid);
5504
5505                                                                         }
5506                                                                 }
5507
5508                                                                 //db_query($link, "COMMIT");
5509                                                         }
5510                                                 }
5511                                         }
5512                                 }
5513                         }
5514
5515                         print "<p>" .
5516                                 T_sprintf("Finished: %d articles processed, %d imported, %d feeds created.",
5517                                         $num_processed, $num_imported, $num_feeds_created) .
5518                                         "</p>";
5519
5520                 } else {
5521
5522                         print "<p>" . __("Could not load XML document.") . "</p>";
5523
5524                 }
5525         }
5526
5527         function get_random_bytes($length) {
5528                 if (function_exists('openssl_random_pseudo_bytes')) {
5529                         return openssl_random_pseudo_bytes($length);
5530                 } else {
5531                         $output = "";
5532
5533                         for ($i = 0; $i < $length; $i++)
5534                                 $output .= chr(mt_rand(0, 255));
5535
5536                         return $output;
5537                 }
5538         }
5539
5540         function read_stdin() {
5541                 $fp = fopen("php://stdin", "r");
5542
5543                 if ($fp) {
5544                         $line = trim(fgets($fp));
5545                         fclose($fp);
5546                         return $line;
5547                 }
5548
5549                 return null;
5550         }
5551
5552         function tmpdirname($path, $prefix) {
5553                 // Use PHP's tmpfile function to create a temporary
5554                 // directory name. Delete the file and keep the name.
5555                 $tempname = tempnam($path,$prefix);
5556                 if (!$tempname)
5557                         return false;
5558
5559                 if (!unlink($tempname))
5560                         return false;
5561
5562        return $tempname;
5563         }
5564
5565         function getFeedCategory($link, $feed) {
5566                 $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
5567                         WHERE id = '$feed'");
5568
5569                 if (db_num_rows($result) > 0) {
5570                         return db_fetch_result($result, 0, "cat_id");
5571                 } else {
5572                         return false;
5573                 }
5574
5575         }
5576
5577 ?>