include/functions.php

   1 <?php
   2         define('EXPECTED_CONFIG_VERSION', 25);
   3         define('SCHEMA_VERSION', 94);
   4
   5         mb_internal_encoding("UTF-8");
   6         date_default_timezone_set('UTC');
   7         if (defined('E_DEPRECATED')) {
   8                 error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
   9         } else {
  10                 error_reporting(E_ALL & ~E_NOTICE);
  11         }
  12
  13         require_once 'config.php';
  14
  15         if (DB_TYPE == "pgsql") {
  16                 define('SUBSTRING_FOR_DATE', 'SUBSTRING_FOR_DATE');
  17         } else {
  18                 define('SUBSTRING_FOR_DATE', 'SUBSTRING');
  19         }
  20
  21         define('THEME_VERSION_REQUIRED', 1.1);
  22
  23         /**
  24          * Return available translations names.
  25          *
  26          * @access public
  27          * @return array A array of available translations.
  28          */
  29         function get_translations() {
  30                 $tr = array(
  31                                         "auto"  => "Detect automatically",
  32                                         "ca_CA" => "Català",
  33                                         "en_US" => "English",
  34                                         "es_ES" => "Español",
  35                                         "de_DE" => "Deutsch",
  36                                         "fr_FR" => "Français",
  37                                         "hu_HU" => "Magyar (Hungarian)",
  38                                         "it_IT" => "Italiano",
  39                                         "ja_JP" => "日本語 (Japanese)",
  40                                         "nb_NO" => "Norwegian bokmål",
  41                                         "ru_RU" => "Русский",
  42                                         "pt_BR" => "Portuguese/Brazil",
  43                                         "zh_CN" => "Simplified Chinese");
  44
  45                 return $tr;
  46         }
  47
  48         require_once "lib/accept-to-gettext.php";
  49         require_once "lib/gettext/gettext.inc";
  50
  51         function startup_gettext() {
  52
  53                 # Get locale from Accept-Language header
  54                 $lang = al2gt(array_keys(get_translations()), "text/html");
  55
  56                 if (defined('_TRANSLATION_OVERRIDE_DEFAULT')) {
  57                         $lang = _TRANSLATION_OVERRIDE_DEFAULT;
  58                 }
  59
  60                 if ($_COOKIE["ttrss_lang"] && $_COOKIE["ttrss_lang"] != "auto") {
  61                         $lang = $_COOKIE["ttrss_lang"];
  62                 }
  63
  64                 /* In login action of mobile version */
  65                 if ($_POST["language"] && defined('MOBILE_VERSION')) {
  66                         $lang = $_POST["language"];
  67                         $_COOKIE["ttrss_lang"] = $lang;
  68                 }
  69
  70                 if ($lang) {
  71                         if (defined('LC_MESSAGES')) {
  72                                 _setlocale(LC_MESSAGES, $lang);
  73                         } else if (defined('LC_ALL')) {
  74                                 _setlocale(LC_ALL, $lang);
  75                         }
  76
  77                         if (defined('MOBILE_VERSION')) {
  78                                 _bindtextdomain("messages", "../locale");
  79                         } else {
  80                                 _bindtextdomain("messages", "locale");
  81                         }
  82
  83                         _textdomain("messages");
  84                         _bind_textdomain_codeset("messages", "UTF-8");
  85                 }
  86         }
  87
  88         startup_gettext();
  89
  90         require_once 'db-prefs.php';
  91         require_once 'version.php';
  92
  93         define('MAGPIE_OUTPUT_ENCODING', 'UTF-8');
  94
  95         define('SELF_USER_AGENT', 'Tiny Tiny RSS/' . VERSION . ' (http://tt-rss.org/)');
  96         define('MAGPIE_USER_AGENT', SELF_USER_AGENT);
  97
  98         ini_set('user_agent', SELF_USER_AGENT);
  99
 100         require_once 'lib/pubsubhubbub/publisher.php';
 101
 102         $purifier = false;
 103
 104         $tz_offset = -1;
 105         $utc_tz = new DateTimeZone('UTC');
 106         $schema_version = false;
 107
 108         /**
 109          * Print a timestamped debug message.
 110          *
 111          * @param string $msg The debug message.
 112          * @return void
 113          */
 114         function _debug($msg) {
 115                 if (defined('QUIET') && QUIET) {
 116                         return;
 117                 }
 118                 $ts = strftime("%H:%M:%S", time());
 119                 if (function_exists('posix_getpid')) {
 120                         $ts = "$ts/" . posix_getpid();
 121                 }
 122                 print "[$ts] $msg\n";
 123         } // function _debug
 124
 125         /**
 126          * Purge a feed old posts.
 127          *
 128          * @param mixed $link A database connection.
 129          * @param mixed $feed_id The id of the purged feed.
 130          * @param mixed $purge_interval Olderness of purged posts.
 131          * @param boolean $debug Set to True to enable the debug. False by default.
 132          * @access public
 133          * @return void
 134          */
 135         function purge_feed($link, $feed_id, $purge_interval, $debug = false) {
 136
 137                 if (!$purge_interval) $purge_interval = feed_purge_interval($link, $feed_id);
 138
 139                 $rows = -1;
 140
 141                 $result = db_query($link,
 142                         "SELECT owner_uid FROM ttrss_feeds WHERE id = '$feed_id'");
 143
 144                 $owner_uid = false;
 145
 146                 if (db_num_rows($result) == 1) {
 147                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 148                 }
 149
 150                 if ($purge_interval == -1 || !$purge_interval) {
 151                         if ($owner_uid) {
 152                                 ccache_update($link, $feed_id, $owner_uid);
 153                         }
 154                         return;
 155                 }
 156
 157                 if (!$owner_uid) return;
 158
 159                 if (FORCE_ARTICLE_PURGE == 0) {
 160                         $purge_unread = get_pref($link, "PURGE_UNREAD_ARTICLES",
 161                                 $owner_uid, false);
 162                 } else {
 163                         $purge_unread = true;
 164                         $purge_interval = FORCE_ARTICLE_PURGE;
 165                 }
 166
 167                 if (!$purge_unread) $query_limit = " unread = false AND ";
 168
 169                 if (DB_TYPE == "pgsql") {
 170                         $pg_version = get_pgsql_version($link);
 171
 172                         if (preg_match("/^7\./", $pg_version) || preg_match("/^8\.0/", $pg_version)) {
 173
 174                                 $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 175                                         ttrss_entries.id = ref_id AND
 176                                         marked = false AND
 177                                         feed_id = '$feed_id' AND
 178                                         $query_limit
 179                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 180
 181                         } else {
 182
 183                                 $result = db_query($link, "DELETE FROM ttrss_user_entries
 184                                         USING ttrss_entries
 185                                         WHERE ttrss_entries.id = ref_id AND
 186                                         marked = false AND
 187                                         feed_id = '$feed_id' AND
 188                                         $query_limit
 189                                         ttrss_entries.date_updated < NOW() - INTERVAL '$purge_interval days'");
 190                         }
 191
 192                         $rows = pg_affected_rows($result);
 193
 194                 } else {
 195
 196 /*                      $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
 197                                 marked = false AND feed_id = '$feed_id' AND
 198                                 (SELECT date_updated FROM ttrss_entries WHERE
 199                                         id = ref_id) < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)"); */
 200
 201                         $result = db_query($link, "DELETE FROM ttrss_user_entries
 202                                 USING ttrss_user_entries, ttrss_entries
 203                                 WHERE ttrss_entries.id = ref_id AND
 204                                 marked = false AND
 205                                 feed_id = '$feed_id' AND
 206                                 $query_limit
 207                                 ttrss_entries.date_updated < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)");
 208
 209                         $rows = mysql_affected_rows($link);
 210
 211                 }
 212
 213                 ccache_update($link, $feed_id, $owner_uid);
 214
 215                 if ($debug) {
 216                         _debug("Purged feed $feed_id ($purge_interval): deleted $rows articles");
 217                 }
 218         } // function purge_feed
 219
 220         function feed_purge_interval($link, $feed_id) {
 221
 222                 $result = db_query($link, "SELECT purge_interval, owner_uid FROM ttrss_feeds
 223                         WHERE id = '$feed_id'");
 224
 225                 if (db_num_rows($result) == 1) {
 226                         $purge_interval = db_fetch_result($result, 0, "purge_interval");
 227                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 228
 229                         if ($purge_interval == 0) $purge_interval = get_pref($link,
 230                                 'PURGE_OLD_DAYS', $owner_uid);
 231
 232                         return $purge_interval;
 233
 234                 } else {
 235                         return -1;
 236                 }
 237         }
 238
 239         function purge_orphans($link, $do_output = false) {
 240
 241                 // purge orphaned posts in main content table
 242                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
 243                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
 244
 245                 if ($do_output) {
 246                         $rows = db_affected_rows($link, $result);
 247                         _debug("Purged $rows orphaned posts.");
 248                 }
 249         }
 250
 251         function get_feed_update_interval($link, $feed_id) {
 252                 $result = db_query($link, "SELECT owner_uid, update_interval FROM
 253                         ttrss_feeds WHERE id = '$feed_id'");
 254
 255                 if (db_num_rows($result) == 1) {
 256                         $update_interval = db_fetch_result($result, 0, "update_interval");
 257                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 258
 259                         if ($update_interval != 0) {
 260                                 return $update_interval;
 261                         } else {
 262                                 return get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $owner_uid, false);
 263                         }
 264
 265                 } else {
 266                         return -1;
 267                 }
 268         }
 269
 270         function fetch_file_contents($url, $type = false, $login = false, $pass = false, $post_query = false) {
 271                 $login = urlencode($login);
 272                 $pass = urlencode($pass);
 273
 274                 if (function_exists('curl_init') && !ini_get("open_basedir")) {
 275                         $ch = curl_init($url);
 276
 277                         curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 15);
 278                         curl_setopt($ch, CURLOPT_TIMEOUT, 45);
 279                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
 280                         curl_setopt($ch, CURLOPT_MAXREDIRS, 20);
 281                         curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
 282                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 283                         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 284                         curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
 285                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 286                         curl_setopt($ch, CURLOPT_ENCODING , "gzip");
 287
 288                         if ($post_query) {
 289                                 curl_setopt($ch, CURLOPT_POST, true);
 290                                 curl_setopt($ch, CURLOPT_POSTFIELDS, $post_query);
 291                         }
 292
 293                         if ($login && $pass)
 294                                 curl_setopt($ch, CURLOPT_USERPWD, "$login:$pass");
 295
 296                         $contents = @curl_exec($ch);
 297
 298                         if ($contents === false) {
 299                                 curl_close($ch);
 300                                 return false;
 301                         }
 302
 303                         $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 304                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 305                         curl_close($ch);
 306
 307                         if ($http_code != 200 || $type && strpos($content_type, "$type") === false) {
 308                                 return false;
 309                         }
 310
 311                         return $contents;
 312                 } else {
 313                         if ($login && $pass ){
 314                                 $url_parts = array();
 315
 316                                 preg_match("/(^[^:]*):\/\/(.*)/", $url, $url_parts);
 317
 318                                 if ($url_parts[1] && $url_parts[2]) {
 319                                         $url = $url_parts[1] . "://$login:$pass@" . $url_parts[2];
 320                                 }
 321                         }
 322
 323                         return @file_get_contents($url);
 324                 }
 325
 326         }
 327
 328         /**
 329          * Try to determine the favicon URL for a feed.
 330          * adapted from wordpress favicon plugin by Jeff Minard (http://thecodepro.com/)
 331          * http://dev.wp-plugins.org/file/favatars/trunk/favatars.php
 332          *
 333          * @param string $url A feed or page URL
 334          * @access public
 335          * @return mixed The favicon URL, or false if none was found.
 336          */
 337         function get_favicon_url($url) {
 338
 339                 $favicon_url = false;
 340
 341                 if ($html = @fetch_file_contents($url)) {
 342
 343                         libxml_use_internal_errors(true);
 344
 345                         $doc = new DOMDocument();
 346                         $doc->loadHTML($html);
 347                         $xpath = new DOMXPath($doc);
 348
 349                         $base = $xpath->query('/html/head/base');
 350                         foreach ($base as $b) {
 351                                 $url = $b->getAttribute("href");
 352                                 break;
 353                         }
 354
 355                         $entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon"]');
 356                         if (count($entries) > 0) {
 357                                 foreach ($entries as $entry) {
 358                                         $favicon_url = rewrite_relative_url($url, $entry->getAttribute("href"));
 359                                         break;
 360                                 }
 361                         }
 362                 }
 363
 364                 if (!$favicon_url)
 365                         $favicon_url = rewrite_relative_url($url, "/favicon.ico");
 366
 367                 return $favicon_url;
 368         } // function get_favicon_url
 369
 370         function check_feed_favicon($site_url, $feed, $link) {
 371 #               print "FAVICON [$site_url]: $favicon_url\n";
 372
 373                 $icon_file = ICONS_DIR . "/$feed.ico";
 374
 375                 if (!file_exists($icon_file)) {
 376                         $favicon_url = get_favicon_url($site_url);
 377
 378                         if ($favicon_url) {
 379                                 // Limiting to "image" type misses those served with text/plain
 380                                 $contents = fetch_file_contents($favicon_url); // , "image");
 381
 382                                 if ($contents) {
 383                                         // Crude image type matching.
 384                                         // Patterns gleaned from the file(1) source code.
 385                                         if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
 386                                                 // 0       string  \000\000\001\000        MS Windows icon resource
 387                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
 388                                         }
 389                                         elseif (preg_match('/^GIF8/', $contents)) {
 390                                                 // 0       string          GIF8            GIF image data
 391                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
 392                                         }
 393                                         elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
 394                                                 // 0       string          \x89PNG\x0d\x0a\x1a\x0a         PNG image data
 395                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
 396                                         }
 397                                         elseif (preg_match('/^\xff\xd8/', $contents)) {
 398                                                 // 0       beshort         0xffd8          JPEG image data
 399                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
 400                                         }
 401                                         else {
 402                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
 403                                                 $contents = "";
 404                                         }
 405                                 }
 406
 407                                 if ($contents) {
 408                                         $fp = @fopen($icon_file, "w");
 409
 410                                         if ($fp) {
 411                                                 fwrite($fp, $contents);
 412                                                 fclose($fp);
 413                                                 chmod($icon_file, 0644);
 414                                         }
 415                                 }
 416                         }
 417                 }
 418         }
 419
 420         function print_select($id, $default, $values, $attributes = "") {
 421                 print "<select name=\"$id\" id=\"$id\" $attributes>";
 422                 foreach ($values as $v) {
 423                         if ($v == $default)
 424                                 $sel = "selected=\"1\"";
 425                          else
 426                                 $sel = "";
 427
 428                         print "<option value=\"$v\" $sel>$v</option>";
 429                 }
 430                 print "</select>";
 431         }
 432
 433         function print_select_hash($id, $default, $values, $attributes = "") {
 434                 print "<select name=\"$id\" id='$id' $attributes>";
 435                 foreach (array_keys($values) as $v) {
 436                         if ($v == $default)
 437                                 $sel = 'selected="selected"';
 438                          else
 439                                 $sel = "";
 440
 441                         print "<option $sel value=\"$v\">".$values[$v]."</option>";
 442                 }
 443
 444                 print "</select>";
 445         }
 446
 447         function get_article_filters($filters, $title, $content, $link, $timestamp, $author, $tags) {
 448                 $matches = array();
 449
 450                 if ($filters["title"]) {
 451                         foreach ($filters["title"] as $filter) {
 452                                 $reg_exp = $filter["reg_exp"];
 453                                 $inverse = $filter["inverse"];
 454                                 if ((!$inverse && @preg_match("/$reg_exp/i", $title)) ||
 455                                                 ($inverse && !@preg_match("/$reg_exp/i", $title))) {
 456
 457                                         array_push($matches, array($filter["action"], $filter["action_param"]));
 458                                 }
 459                         }
 460                 }
 461
 462                 if ($filters["content"]) {
 463                         foreach ($filters["content"] as $filter) {
 464                                 $reg_exp = $filter["reg_exp"];
 465                                 $inverse = $filter["inverse"];
 466
 467                                 if ((!$inverse && @preg_match("/$reg_exp/i", $content)) ||
 468                                                 ($inverse && !@preg_match("/$reg_exp/i", $content))) {
 469
 470                                         array_push($matches, array($filter["action"], $filter["action_param"]));
 471                                 }
 472                         }
 473                 }
 474
 475                 if ($filters["both"]) {
 476                         foreach ($filters["both"] as $filter) {
 477                                 $reg_exp = $filter["reg_exp"];
 478                                 $inverse = $filter["inverse"];
 479
 480                                 if ($inverse) {
 481                                         if (!@preg_match("/$reg_exp/i", $title) && !preg_match("/$reg_exp/i", $content)) {
 482                                                 array_push($matches, array($filter["action"], $filter["action_param"]));
 483                                         }
 484                                 } else {
 485                                         if (@preg_match("/$reg_exp/i", $title) || preg_match("/$reg_exp/i", $content)) {
 486                                                 array_push($matches, array($filter["action"], $filter["action_param"]));
 487                                         }
 488                                 }
 489                         }
 490                 }
 491
 492                 if ($filters["link"]) {
 493                         $reg_exp = $filter["reg_exp"];
 494                         foreach ($filters["link"] as $filter) {
 495                                 $reg_exp = $filter["reg_exp"];
 496                                 $inverse = $filter["inverse"];
 497
 498                                 if ((!$inverse && @preg_match("/$reg_exp/i", $link)) ||
 499                                                 ($inverse && !@preg_match("/$reg_exp/i", $link))) {
 500
 501                                         array_push($matches, array($filter["action"], $filter["action_param"]));
 502                                 }
 503                         }
 504                 }
 505
 506                 if ($filters["date"]) {
 507                         $reg_exp = $filter["reg_exp"];
 508                         foreach ($filters["date"] as $filter) {
 509                                 $date_modifier = $filter["filter_param"];
 510                                 $inverse = $filter["inverse"];
 511                                 $check_timestamp = strtotime($filter["reg_exp"]);
 512
 513                                 # no-op when timestamp doesn't parse to prevent misfires
 514
 515                                 if ($check_timestamp) {
 516                                         $match_ok = false;
 517
 518                                         if ($date_modifier == "before" && $timestamp < $check_timestamp ||
 519                                                 $date_modifier == "after" && $timestamp > $check_timestamp) {
 520                                                         $match_ok = true;
 521                                         }
 522
 523                                         if ($inverse) $match_ok = !$match_ok;
 524
 525                                         if ($match_ok) {
 526                                                 array_push($matches, array($filter["action"], $filter["action_param"]));
 527                                         }
 528                                 }
 529                         }
 530                 }
 531
 532                 if ($filters["author"]) {
 533                         foreach ($filters["author"] as $filter) {
 534                                 $reg_exp = $filter["reg_exp"];
 535                                 $inverse = $filter["inverse"];
 536                                 if ((!$inverse && @preg_match("/$reg_exp/i", $author)) ||
 537                                                 ($inverse && !@preg_match("/$reg_exp/i", $author))) {
 538
 539                                         array_push($matches, array($filter["action"], $filter["action_param"]));
 540                                 }
 541                         }
 542                 }
 543
 544                 if ($filters["tag"]) {
 545
 546                         $tag_string = join(",", $tags);
 547
 548                         foreach ($filters["tag"] as $filter) {
 549                                 $reg_exp = $filter["reg_exp"];
 550                                 $inverse = $filter["inverse"];
 551
 552                                 if ((!$inverse && @preg_match("/$reg_exp/i", $tag_string)) ||
 553                                                 ($inverse && !@preg_match("/$reg_exp/i", $tag_string))) {
 554
 555                                         array_push($matches, array($filter["action"], $filter["action_param"]));
 556                                 }
 557                         }
 558                 }
 559
 560
 561                 return $matches;
 562         }
 563
 564         function find_article_filter($filters, $filter_name) {
 565                 foreach ($filters as $f) {
 566                         if ($f[0] == $filter_name) {
 567                                 return $f;
 568                         };
 569                 }
 570                 return false;
 571         }
 572
 573         function calculate_article_score($filters) {
 574                 $score = 0;
 575
 576                 foreach ($filters as $f) {
 577                         if ($f[0] == "score") {
 578                                 $score += $f[1];
 579                         };
 580                 }
 581                 return $score;
 582         }
 583
 584         function assign_article_to_labels($link, $id, $filters, $owner_uid) {
 585                 foreach ($filters as $f) {
 586                         if ($f[0] == "label") {
 587                                 label_add_article($link, $id, $f[1], $owner_uid);
 588                         };
 589                 }
 590         }
 591
 592         function getmicrotime() {
 593                 list($usec, $sec) = explode(" ",microtime());
 594                 return ((float)$usec + (float)$sec);
 595         }
 596
 597         function print_radio($id, $default, $true_is, $values, $attributes = "") {
 598                 foreach ($values as $v) {
 599
 600                         if ($v == $default)
 601                                 $sel = "checked";
 602                          else
 603                                 $sel = "";
 604
 605                         if ($v == $true_is) {
 606                                 $sel .= " value=\"1\"";
 607                         } else {
 608                                 $sel .= " value=\"0\"";
 609                         }
 610
 611                         print "<input class=\"noborder\" dojoType=\"dijit.form.RadioButton\"
 612                                 type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 613
 614                 }
 615         }
 616
 617         function initialize_user_prefs($link, $uid, $profile = false) {
 618
 619                 $uid = db_escape_string($uid);
 620
 621                 if (!$profile) {
 622                         $profile = "NULL";
 623                         $profile_qpart = "AND profile IS NULL";
 624                 } else {
 625                         $profile_qpart = "AND profile = '$profile'";
 626                 }
 627
 628                 if (get_schema_version($link) < 63) $profile_qpart = "";
 629
 630                 db_query($link, "BEGIN");
 631
 632                 $result = db_query($link, "SELECT pref_name,def_value FROM ttrss_prefs");
 633
 634                 $u_result = db_query($link, "SELECT pref_name
 635                         FROM ttrss_user_prefs WHERE owner_uid = '$uid' $profile_qpart");
 636
 637                 $active_prefs = array();
 638
 639                 while ($line = db_fetch_assoc($u_result)) {
 640                         array_push($active_prefs, $line["pref_name"]);
 641                 }
 642
 643                 while ($line = db_fetch_assoc($result)) {
 644                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 645 //                              print "adding " . $line["pref_name"] . "<br>";
 646
 647                                 if (get_schema_version($link) < 63) {
 648                                         db_query($link, "INSERT INTO ttrss_user_prefs
 649                                                 (owner_uid,pref_name,value) VALUES
 650                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 651
 652                                 } else {
 653                                         db_query($link, "INSERT INTO ttrss_user_prefs
 654                                                 (owner_uid,pref_name,value, profile) VALUES
 655                                                 ('$uid', '".$line["pref_name"]."','".$line["def_value"]."', $profile)");
 656                                 }
 657
 658                         }
 659                 }
 660
 661                 db_query($link, "COMMIT");
 662
 663         }
 664
 665         function get_ssl_certificate_id() {
 666                 if ($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"]) {
 667                         return sha1($_SERVER["REDIRECT_SSL_CLIENT_M_SERIAL"] .
 668                                 $_SERVER["REDIRECT_SSL_CLIENT_V_START"] .
 669                                 $_SERVER["REDIRECT_SSL_CLIENT_V_END"] .
 670                                 $_SERVER["REDIRECT_SSL_CLIENT_S_DN"]);
 671                 }
 672                 return "";
 673         }
 674
 675         function get_login_by_ssl_certificate($link) {
 676
 677                 $cert_serial = db_escape_string(get_ssl_certificate_id());
 678
 679                 if ($cert_serial) {
 680                         $result = db_query($link, "SELECT login FROM ttrss_user_prefs, ttrss_users
 681                                 WHERE pref_name = 'SSL_CERT_SERIAL' AND value = '$cert_serial' AND
 682                                 owner_uid = ttrss_users.id");
 683
 684                         if (db_num_rows($result) != 0) {
 685                                 return db_escape_string(db_fetch_result($result, 0, "login"));
 686                         }
 687                 }
 688
 689                 return "";
 690         }
 691
 692         function get_remote_user($link) {
 693
 694                 if (defined('ALLOW_REMOTE_USER_AUTH') && ALLOW_REMOTE_USER_AUTH) {
 695                         return db_escape_string($_SERVER["REMOTE_USER"]);
 696                 }
 697
 698                 return db_escape_string(get_login_by_ssl_certificate($link));
 699         }
 700
 701         function get_remote_fakepass($link) {
 702                 if (get_remote_user($link))
 703                         return "******";
 704                 else
 705                         return "";
 706         }
 707
 708         function authenticate_user($link, $login, $password, $force_auth = false) {
 709
 710                 if (!SINGLE_USER_MODE) {
 711
 712                         $pwd_hash1 = encrypt_password($password);
 713                         $pwd_hash2 = encrypt_password($password, $login);
 714                         $login = db_escape_string($login);
 715
 716                         $remote_user = get_remote_user($link);
 717
 718                         if ($remote_user && $remote_user == $login && $login != "admin") {
 719
 720                                 $login = $remote_user;
 721
 722                                 $query = "SELECT id,login,access_level,pwd_hash
 723                     FROM ttrss_users WHERE
 724                                         login = '$login'";
 725
 726                                 if (defined('AUTO_CREATE_USER') && AUTO_CREATE_USER
 727                                                 && $_SERVER["REMOTE_USER"]) {
 728                                         $result = db_query($link, $query);
 729
 730                                         // First login ?
 731                                         if (db_num_rows($result) == 0) {
 732                                                 $salt = substr(bin2hex(get_random_bytes(125)), 0, 250);
 733                                                 $pwd_hash = encrypt_password($password, $salt, true);
 734
 735                                                 $query2 = "INSERT INTO ttrss_users
 736                                                                 (login,access_level,last_login,created,pwd_hash,salt)
 737                                                                 VALUES ('$login', 0, null, NOW(), '$pwd_hash','$salt')";
 738                                                 db_query($link, $query2);
 739                                         }
 740                                 }
 741
 742                         } else if (get_schema_version($link) > 87) {
 743                                 $result = db_query($link, "SELECT salt FROM ttrss_users WHERE
 744                                         login = '$login'");
 745
 746                                 if (db_num_rows($result) != 1) {
 747                                         return false;
 748                                 }
 749
 750                                 $salt = db_fetch_result($result, 0, "salt");
 751
 752                                 if ($salt == "") {
 753
 754                                         $query = "SELECT id,login,access_level,pwd_hash
 755                             FROM ttrss_users WHERE
 756                                                 login = '$login' AND (pwd_hash = '$pwd_hash1' OR
 757                                                 pwd_hash = '$pwd_hash2')";
 758
 759                                         // verify and upgrade password to new salt base
 760
 761                                         $result = db_query($link, $query);
 762
 763                                         if (db_num_rows($result) == 1) {
 764                                                 // upgrade password to MODE2
 765
 766                                                 $salt = substr(bin2hex(get_random_bytes(125)), 0, 250);
 767                                                 $pwd_hash = encrypt_password($password, $salt, true);
 768
 769                                                 db_query($link, "UPDATE ttrss_users SET
 770                                                         pwd_hash = '$pwd_hash', salt = '$salt' WHERE login = '$login'");
 771
 772                                                 $query = "SELECT id,login,access_level,pwd_hash
 773                                     FROM ttrss_users WHERE
 774                                                         login = '$login' AND pwd_hash = '$pwd_hash'";
 775
 776                                         } else {
 777                                                 return false;
 778                                         }
 779
 780                                 } else {
 781
 782                                         $pwd_hash = encrypt_password($password, $salt, true);
 783
 784                                         $query = "SELECT id,login,access_level,pwd_hash
 785                                  FROM ttrss_users WHERE
 786                                                 login = '$login' AND pwd_hash = '$pwd_hash'";
 787
 788                                 }
 789                         } else {
 790                                 $query = "SELECT id,login,access_level,pwd_hash
 791                          FROM ttrss_users WHERE
 792                                         login = '$login' AND (pwd_hash = '$pwd_hash1' OR
 793                                                 pwd_hash = '$pwd_hash2')";
 794                         }
 795
 796                         $result = db_query($link, $query);
 797
 798                         if (db_num_rows($result) == 1) {
 799                                 $_SESSION["uid"] = db_fetch_result($result, 0, "id");
 800                                 $_SESSION["name"] = db_fetch_result($result, 0, "login");
 801                                 $_SESSION["access_level"] = db_fetch_result($result, 0, "access_level");
 802                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 803
 804                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 805                                         $_SESSION["uid"]);
 806
 807
 808                                 // LemonLDAP can send user informations via HTTP HEADER
 809                                 if (defined('AUTO_CREATE_USER') && AUTO_CREATE_USER){
 810                                         // update user name
 811                                         $fullname = $_SERVER['HTTP_USER_NAME'] ? $_SERVER['HTTP_USER_NAME'] : $_SERVER['AUTHENTICATE_CN'];
 812                                         if ($fullname){
 813                                                 $fullname = db_escape_string($fullname);
 814                                                 db_query($link, "UPDATE ttrss_users SET full_name = '$fullname' WHERE id = " .
 815                                                         $_SESSION["uid"]);
 816                                         }
 817                                         // update user mail
 818                                         $email = $_SERVER['HTTP_USER_MAIL'] ? $_SERVER['HTTP_USER_MAIL'] : $_SERVER['AUTHENTICATE_MAIL'];
 819                                         if ($email){
 820                                                 $email = db_escape_string($email);
 821                                                 db_query($link, "UPDATE ttrss_users SET email = '$email' WHERE id = " .
 822                                                         $_SESSION["uid"]);
 823                                         }
 824                                 }
 825
 826                                 $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 827                                 $_SESSION["pwd_hash"] = db_fetch_result($result, 0, "pwd_hash");
 828
 829                                 $_SESSION["last_version_check"] = time();
 830
 831                                 initialize_user_prefs($link, $_SESSION["uid"]);
 832
 833                                 return true;
 834                         }
 835
 836                         return false;
 837
 838                 } else {
 839
 840                         $_SESSION["uid"] = 1;
 841                         $_SESSION["name"] = "admin";
 842                         $_SESSION["access_level"] = 10;
 843
 844                         if (!$_SESSION["csrf_token"]) {
 845                                 $_SESSION["csrf_token"] = sha1(uniqid(rand(), true));
 846                         }
 847
 848                         $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 849
 850                         initialize_user_prefs($link, $_SESSION["uid"]);
 851
 852                         return true;
 853                 }
 854         }
 855
 856         function make_password($length = 8) {
 857
 858                 $password = "";
 859                 $possible = "0123456789abcdfghjkmnpqrstvwxyzABCDFGHJKMNPQRSTVWXYZ";
 860
 861         $i = 0;
 862
 863                 while ($i < $length) {
 864                         $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 865
 866                         if (!strstr($password, $char)) {
 867                                 $password .= $char;
 868                                 $i++;
 869                         }
 870                 }
 871                 return $password;
 872         }
 873
 874         // this is called after user is created to initialize default feeds, labels
 875         // or whatever else
 876
 877         // user preferences are checked on every login, not here
 878
 879         function initialize_user($link, $uid) {
 880
 881                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 882                         values ('$uid', 'Tiny Tiny RSS: New Releases',
 883                         'http://tt-rss.org/releases.rss')");
 884
 885                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 886                         values ('$uid', 'Tiny Tiny RSS: Forum',
 887                                 'http://tt-rss.org/forum/rss.php')");
 888         }
 889
 890         function logout_user() {
 891                 session_destroy();
 892                 if (isset($_COOKIE[session_name()])) {
 893                    setcookie(session_name(), '', time()-42000, '/');
 894                 }
 895         }
 896
 897         function validate_csrf($csrf_token) {
 898                 return $csrf_token == $_SESSION['csrf_token'];
 899         }
 900
 901         function validate_session($link) {
 902                 if (SINGLE_USER_MODE) return true;
 903
 904                 $check_ip = $_SESSION['ip_address'];
 905
 906                 switch (SESSION_CHECK_ADDRESS) {
 907                 case 0:
 908                         $check_ip = '';
 909                         break;
 910                 case 1:
 911                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 912                         break;
 913                 case 2:
 914                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.'));
 915                         $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
 916                         break;
 917                 };
 918
 919                 if ($check_ip && strpos($_SERVER['REMOTE_ADDR'], $check_ip) !== 0) {
 920                         $_SESSION["login_error_msg"] =
 921                                 __("Session failed to validate (incorrect IP)");
 922                         return false;
 923                 }
 924
 925                 if ($_SESSION["ref_schema_version"] != get_schema_version($link, true))
 926                         return false;
 927
 928                 if ($_SESSION["uid"]) {
 929
 930                         $result = db_query($link,
 931                                 "SELECT pwd_hash FROM ttrss_users WHERE id = '".$_SESSION["uid"]."'");
 932
 933                         $pwd_hash = db_fetch_result($result, 0, "pwd_hash");
 934
 935                         if ($pwd_hash != $_SESSION["pwd_hash"]) {
 936                                 return false;
 937                         }
 938                 }
 939
 940 /*              if ($_SESSION["cookie_lifetime"] && $_SESSION["uid"]) {
 941
 942                         //print_r($_SESSION);
 943
 944                         if (time() > $_SESSION["cookie_lifetime"]) {
 945                                 return false;
 946                         }
 947                 } */
 948
 949                 return true;
 950         }
 951
 952         function login_sequence($link, $mobile = false) {
 953                 $_SESSION["prefs_cache"] = array();
 954
 955                 if (!SINGLE_USER_MODE) {
 956
 957                         $login_action = $_POST["login_action"];
 958
 959                         # try to authenticate user if called from login form
 960                         if ($login_action == "do_login") {
 961                                 $login = db_escape_string($_POST["login"]);
 962                                 $password = $_POST["password"];
 963                                 $remember_me = $_POST["remember_me"];
 964
 965                                 if (authenticate_user($link, $login, $password)) {
 966                                         $_POST["password"] = "";
 967
 968                                         $_SESSION["language"] = $_POST["language"];
 969                                         $_SESSION["ref_schema_version"] = get_schema_version($link, true);
 970                                         $_SESSION["bw_limit"] = !!$_POST["bw_limit"];
 971
 972                                         if ($_POST["profile"]) {
 973
 974                                                 $profile = db_escape_string($_POST["profile"]);
 975
 976                                                 $result = db_query($link, "SELECT id FROM ttrss_settings_profiles
 977                                                         WHERE id = '$profile' AND owner_uid = " . $_SESSION["uid"]);
 978
 979                                                 if (db_num_rows($result) != 0) {
 980                                                         $_SESSION["profile"] = $profile;
 981                                                         $_SESSION["prefs_cache"] = array();
 982                                                 }
 983                                         }
 984
 985                                         if ($_REQUEST['return']) {
 986                                                 header("Location: " . $_REQUEST['return']);
 987                                         } else {
 988                                                 header("Location: " . $_SERVER["REQUEST_URI"]);
 989                                         }
 990
 991                                         exit;
 992
 993                                         return;
 994                                 } else {
 995                                         $_SESSION["login_error_msg"] = __("Incorrect username or password");
 996                                 }
 997                         }
 998
 999                         if (!$_SESSION["uid"] || !validate_session($link)) {
1000
1001                                 if (get_remote_user($link) && AUTO_LOGIN) {
1002                                     authenticate_user($link, get_remote_user($link), null);
1003                                     $_SESSION["ref_schema_version"] = get_schema_version($link, true);
1004                                 } else {
1005                                     render_login_form($link, $mobile);
1006                                     //header("Location: login.php");
1007                                     exit;
1008                                 }
1009                         } else {
1010                                 /* bump login timestamp */
1011                                 db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
1012                                         $_SESSION["uid"]);
1013
1014                                 if ($_SESSION["language"] && SESSION_COOKIE_LIFETIME > 0) {
1015                                         setcookie("ttrss_lang", $_SESSION["language"],
1016                                                 time() + SESSION_COOKIE_LIFETIME);
1017                                 }
1018
1019                                 // try to remove possible duplicates from feed counter cache
1020 //                              ccache_cleanup($link, $_SESSION["uid"]);
1021                         }
1022
1023                 } else {
1024                         return authenticate_user($link, "admin", null);
1025                 }
1026         }
1027
1028         function truncate_string($str, $max_len, $suffix = '&hellip;') {
1029                 if (mb_strlen($str, "utf-8") > $max_len - 3) {
1030                         return mb_substr($str, 0, $max_len, "utf-8") . $suffix;
1031                 } else {
1032                         return $str;
1033                 }
1034         }
1035
1036         function theme_image($link, $filename) {
1037                 if ($link) {
1038                         $theme_path = get_user_theme_path($link);
1039
1040                         if ($theme_path && is_file($theme_path.$filename)) {
1041                                 return $theme_path.$filename;
1042                         } else {
1043                                 return $filename;
1044                         }
1045                 } else {
1046                         return $filename;
1047                 }
1048         }
1049
1050         function get_user_theme($link) {
1051
1052                 if (get_schema_version($link) >= 63 && $_SESSION["uid"]) {
1053                         $theme_name = get_pref($link, "_THEME_ID");
1054                         if (is_dir("themes/$theme_name")) {
1055                                 return $theme_name;
1056                         } else {
1057                                 return '';
1058                         }
1059                 } else {
1060                         return '';
1061                 }
1062
1063         }
1064
1065         function get_user_theme_path($link) {
1066                 $theme_path = '';
1067
1068                 if (get_schema_version($link) >= 63 && $_SESSION["uid"]) {
1069                         $theme_name = get_pref($link, "_THEME_ID");
1070
1071                         if ($theme_name && is_dir("themes/$theme_name")) {
1072                                 $theme_path = "themes/$theme_name/";
1073                         } else {
1074                                 $theme_name = '';
1075                         }
1076                 } else {
1077                         $theme_path = '';
1078                 }
1079
1080                 if ($theme_path) {
1081                         if (is_file("$theme_path/theme.ini")) {
1082                                 $ini = parse_ini_file("$theme_path/theme.ini", true);
1083                                 if ($ini['theme']['version'] >= THEME_VERSION_REQUIRED) {
1084                                         return $theme_path;
1085                                 }
1086                         }
1087                 }
1088                 return '';
1089         }
1090
1091         function get_user_theme_options($link) {
1092                 $t = get_user_theme_path($link);
1093
1094                 if ($t) {
1095                         if (is_file("$t/theme.ini")) {
1096                                 $ini = parse_ini_file("$t/theme.ini", true);
1097                                 if ($ini['theme']['version']) {
1098                                         return $ini['theme']['options'];
1099                                 }
1100                         }
1101                 }
1102                 return '';
1103         }
1104
1105         function print_theme_includes($link) {
1106
1107                 $t = get_user_theme_path($link);
1108                 $time = time();
1109
1110                 if ($t) {
1111                         print "<link rel=\"stylesheet\" type=\"text/css\"
1112                                 href=\"$t/theme.css?$time \">";
1113                         if (file_exists("$t/theme.js")) {
1114                                 print "<script type=\"text/javascript\" src=\"$t/theme.js?$time\">
1115                                         </script>";
1116                         }
1117                 }
1118         }
1119
1120         function get_all_themes() {
1121                 $themes = glob("themes/*");
1122
1123                 asort($themes);
1124
1125                 $rv = array();
1126
1127                 foreach ($themes as $t) {
1128                         if (is_file("$t/theme.ini")) {
1129                                 $ini = parse_ini_file("$t/theme.ini", true);
1130                                 if ($ini['theme']['version'] >= THEME_VERSION_REQUIRED &&
1131                                                         !$ini['theme']['disabled']) {
1132                                         $entry = array();
1133                                         $entry["path"] = $t;
1134                                         $entry["base"] = basename($t);
1135                                         $entry["name"] = $ini['theme']['name'];
1136                                         $entry["version"] = $ini['theme']['version'];
1137                                         $entry["author"] = $ini['theme']['author'];
1138                                         $entry["options"] = $ini['theme']['options'];
1139                                         array_push($rv, $entry);
1140                                 }
1141                         }
1142                 }
1143
1144                 return $rv;
1145         }
1146
1147         function convert_timestamp($timestamp, $source_tz, $dest_tz) {
1148
1149                 try {
1150                         $source_tz = new DateTimeZone($source_tz);
1151                 } catch (Exception $e) {
1152                         $source_tz = new DateTimeZone('UTC');
1153                 }
1154
1155                 try {
1156                         $dest_tz = new DateTimeZone($dest_tz);
1157                 } catch (Exception $e) {
1158                         $dest_tz = new DateTimeZone('UTC');
1159                 }
1160
1161                 $dt = new DateTime(date('Y-m-d H:i:s', $timestamp), $source_tz);
1162                 return $dt->format('U') + $dest_tz->getOffset($dt);
1163         }
1164
1165         function make_local_datetime($link, $timestamp, $long, $owner_uid = false,
1166                                         $no_smart_dt = false) {
1167
1168                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
1169                 if (!$timestamp) $timestamp = '1970-01-01 0:00';
1170
1171                 global $utc_tz;
1172                 global $tz_offset;
1173
1174                 # We store date in UTC internally
1175                 $dt = new DateTime($timestamp, $utc_tz);
1176
1177                 if ($tz_offset == -1) {
1178
1179                         $user_tz_string = get_pref($link, 'USER_TIMEZONE', $owner_uid);
1180
1181                         try {
1182                                 $user_tz = new DateTimeZone($user_tz_string);
1183                         } catch (Exception $e) {
1184                                 $user_tz = $utc_tz;
1185                         }
1186
1187                         $tz_offset = $user_tz->getOffset($dt);
1188                 }
1189
1190                 $user_timestamp = $dt->format('U') + $tz_offset;
1191
1192                 if (!$no_smart_dt) {
1193                         return smart_date_time($link, $user_timestamp,
1194                                 $tz_offset, $owner_uid);
1195                 } else {
1196                         if ($long)
1197                                 $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
1198                         else
1199                                 $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
1200
1201                         return date($format, $user_timestamp);
1202                 }
1203         }
1204
1205         function smart_date_time($link, $timestamp, $tz_offset = 0, $owner_uid = false) {
1206                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
1207
1208                 if (date("Y.m.d", $timestamp) == date("Y.m.d", time() + $tz_offset)) {
1209                         return date("G:i", $timestamp);
1210                 } else if (date("Y", $timestamp) == date("Y", time() + $tz_offset)) {
1211                         $format = get_pref($link, 'SHORT_DATE_FORMAT', $owner_uid);
1212                         return date($format, $timestamp);
1213                 } else {
1214                         $format = get_pref($link, 'LONG_DATE_FORMAT', $owner_uid);
1215                         return date($format, $timestamp);
1216                 }
1217         }
1218
1219         function sql_bool_to_bool($s) {
1220                 if ($s == "t" || $s == "1" || $s == "true") {
1221                         return true;
1222                 } else {
1223                         return false;
1224                 }
1225         }
1226
1227         function bool_to_sql_bool($s) {
1228                 if ($s) {
1229                         return "true";
1230                 } else {
1231                         return "false";
1232                 }
1233         }
1234
1235         // Session caching removed due to causing wrong redirects to upgrade
1236         // script when get_schema_version() is called on an obsolete session
1237         // created on a previous schema version.
1238         function get_schema_version($link, $nocache = false) {
1239                 global $schema_version;
1240
1241                 if (!$schema_version) {
1242                         $result = db_query($link, "SELECT schema_version FROM ttrss_version");
1243                         $version = db_fetch_result($result, 0, "schema_version");
1244                         $schema_version = $version;
1245                         return $version;
1246                 } else {
1247                         return $schema_version;
1248                 }
1249         }
1250
1251         function sanity_check($link) {
1252                 require_once 'errors.php';
1253
1254                 $error_code = 0;
1255                 $schema_version = get_schema_version($link, true);
1256
1257                 if ($schema_version != SCHEMA_VERSION) {
1258                         $error_code = 5;
1259                 }
1260
1261                 if (DB_TYPE == "mysql") {
1262                         $result = db_query($link, "SELECT true", false);
1263                         if (db_num_rows($result) != 1) {
1264                                 $error_code = 10;
1265                         }
1266                 }
1267
1268                 if (db_escape_string("testTEST") != "testTEST") {
1269                         $error_code = 12;
1270                 }
1271
1272                 return array("code" => $error_code, "message" => $ERRORS[$error_code]);
1273         }
1274
1275         function file_is_locked($filename) {
1276                 if (function_exists('flock')) {
1277                         $fp = @fopen(LOCK_DIRECTORY . "/$filename", "r");
1278                         if ($fp) {
1279                                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1280                                         flock($fp, LOCK_UN);
1281                                         fclose($fp);
1282                                         return false;
1283                                 }
1284                                 fclose($fp);
1285                                 return true;
1286                         } else {
1287                                 return false;
1288                         }
1289                 }
1290                 return true; // consider the file always locked and skip the test
1291         }
1292
1293         function make_lockfile($filename) {
1294                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
1295
1296                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1297                         if (function_exists('posix_getpid')) {
1298                                 fwrite($fp, posix_getpid() . "\n");
1299                         }
1300                         return $fp;
1301                 } else {
1302                         return false;
1303                 }
1304         }
1305
1306         function make_stampfile($filename) {
1307                 $fp = fopen(LOCK_DIRECTORY . "/$filename", "w");
1308
1309                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1310                         fwrite($fp, time() . "\n");
1311                         flock($fp, LOCK_UN);
1312                         fclose($fp);
1313                         return true;
1314                 } else {
1315                         return false;
1316                 }
1317         }
1318
1319         function sql_random_function() {
1320                 if (DB_TYPE == "mysql") {
1321                         return "RAND()";
1322                 } else {
1323                         return "RANDOM()";
1324                 }
1325         }
1326
1327         function catchup_feed($link, $feed, $cat_view, $owner_uid = false, $max_id = false) {
1328
1329                         if (!$owner_uid) $owner_uid = $_SESSION['uid'];
1330
1331                         //if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
1332
1333                         $ref_check_qpart = ($max_id &&
1334                                 !get_pref($link, 'REVERSE_HEADLINES')) ? "ref_id <= '$max_id'" : "true";
1335
1336                         if (is_numeric($feed)) {
1337                                 if ($cat_view) {
1338
1339                                         if ($feed >= 0) {
1340
1341                                                 if ($feed > 0) {
1342                                                         $cat_qpart = "cat_id = '$feed'";
1343                                                 } else {
1344                                                         $cat_qpart = "cat_id IS NULL";
1345                                                 }
1346
1347                                                 $tmp_result = db_query($link, "SELECT id
1348                                                         FROM ttrss_feeds WHERE $cat_qpart AND owner_uid = $owner_uid");
1349
1350                                                 while ($tmp_line = db_fetch_assoc($tmp_result)) {
1351
1352                                                         $tmp_feed = $tmp_line["id"];
1353
1354                                                         db_query($link, "UPDATE ttrss_user_entries
1355                                                                 SET unread = false,last_read = NOW()
1356                                                                 WHERE feed_id = '$tmp_feed'
1357                                                                 AND $ref_check_qpart
1358                                                                 AND owner_uid = $owner_uid");
1359                                                 }
1360                                         } else if ($feed == -2) {
1361
1362                                                 db_query($link, "UPDATE ttrss_user_entries
1363                                                         SET unread = false,last_read = NOW() WHERE (SELECT COUNT(*)
1364                                                                 FROM ttrss_user_labels2 WHERE article_id = ref_id) > 0
1365                                                                 AND $ref_check_qpart
1366                                                                 AND unread = true AND owner_uid = $owner_uid");
1367                                         }
1368
1369                                 } else if ($feed > 0) {
1370
1371                                         db_query($link, "UPDATE ttrss_user_entries
1372                                                         SET unread = false,last_read = NOW()
1373                                                         WHERE feed_id = '$feed'
1374                                                         AND $ref_check_qpart
1375                                                         AND owner_uid = $owner_uid");
1376
1377                                 } else if ($feed < 0 && $feed > -10) { // special, like starred
1378
1379                                         if ($feed == -1) {
1380                                                 db_query($link, "UPDATE ttrss_user_entries
1381                                                         SET unread = false,last_read = NOW()
1382                                                         WHERE marked = true
1383                                                         AND $ref_check_qpart
1384                                                         AND owner_uid = $owner_uid");
1385                                         }
1386
1387                                         if ($feed == -2) {
1388                                                 db_query($link, "UPDATE ttrss_user_entries
1389                                                         SET unread = false,last_read = NOW()
1390                                                         WHERE published = true
1391                                                         AND $ref_check_qpart
1392                                                         AND owner_uid = $owner_uid");
1393                                         }
1394
1395                                         if ($feed == -3) {
1396
1397                                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE");
1398
1399                                                 if (DB_TYPE == "pgsql") {
1400                                                         $match_part = "updated > NOW() - INTERVAL '$intl hour' ";
1401                                                 } else {
1402                                                         $match_part = "updated > DATE_SUB(NOW(),
1403                                                                 INTERVAL $intl HOUR) ";
1404                                                 }
1405
1406                                                 $result = db_query($link, "SELECT id FROM ttrss_entries,
1407                                                         ttrss_user_entries WHERE $match_part AND
1408                                                         unread = true AND
1409                                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
1410                                                         owner_uid = $owner_uid");
1411
1412                                                 $affected_ids = array();
1413
1414                                                 while ($line = db_fetch_assoc($result)) {
1415                                                         array_push($affected_ids, $line["id"]);
1416                                                 }
1417
1418                                                 catchupArticlesById($link, $affected_ids, 0);
1419                                         }
1420
1421                                         if ($feed == -4) {
1422                                                 db_query($link, "UPDATE ttrss_user_entries
1423                                                         SET unread = false,last_read = NOW()
1424                                                         WHERE $ref_check_qpart AND owner_uid = $owner_uid");
1425                                         }
1426
1427                                 } else if ($feed < -10) { // label
1428
1429                                         $label_id = -$feed - 11;
1430
1431                                         db_query($link, "UPDATE ttrss_user_entries, ttrss_user_labels2
1432                                                 SET unread = false, last_read = NOW()
1433                                                         WHERE label_id = '$label_id' AND unread = true
1434                                                         AND $ref_check_qpart
1435                                                         AND owner_uid = '$owner_uid' AND ref_id = article_id");
1436
1437                                 }
1438
1439                                 ccache_update($link, $feed, $owner_uid, $cat_view);
1440
1441                         } else { // tag
1442                                 db_query($link, "BEGIN");
1443
1444                                 $tag_name = db_escape_string($feed);
1445
1446                                 $result = db_query($link, "SELECT post_int_id FROM ttrss_tags
1447                                         WHERE tag_name = '$tag_name' AND owner_uid = $owner_uid");
1448
1449                                 while ($line = db_fetch_assoc($result)) {
1450                                         db_query($link, "UPDATE ttrss_user_entries SET
1451                                                 unread = false, last_read = NOW()
1452                                                 WHERE $ref_check_qpart AND int_id = " . $line["post_int_id"]);
1453                                 }
1454                                 db_query($link, "COMMIT");
1455                         }
1456         }
1457
1458         function getAllCounters($link, $omode = "flc", $active_feed = false) {
1459
1460                 if (!$omode) $omode = "flc";
1461
1462                 $data = getGlobalCounters($link);
1463
1464                 $data = array_merge($data, getVirtCounters($link));
1465
1466                 if (strchr($omode, "l")) $data = array_merge($data, getLabelCounters($link));
1467                 if (strchr($omode, "f")) $data = array_merge($data, getFeedCounters($link, $active_feed));
1468                 if (strchr($omode, "t")) $data = array_merge($data, getTagCounters($link));
1469                 if (strchr($omode, "c")) $data = array_merge($data, getCategoryCounters($link));
1470
1471                 return $data;
1472         }
1473
1474         function getCategoryTitle($link, $cat_id) {
1475
1476                 if ($cat_id == -1) {
1477                         return __("Special");
1478                 } else if ($cat_id == -2) {
1479                         return __("Labels");
1480                 } else {
1481
1482                         $result = db_query($link, "SELECT title FROM ttrss_feed_categories WHERE
1483                                 id = '$cat_id'");
1484
1485                         if (db_num_rows($result) == 1) {
1486                                 return db_fetch_result($result, 0, "title");
1487                         } else {
1488                                 return "Uncategorized";
1489                         }
1490                 }
1491         }
1492
1493
1494         function getCategoryCounters($link) {
1495                 $ret_arr = array();
1496
1497                 /* Labels category */
1498
1499                 $cv = array("id" => -2, "kind" => "cat",
1500                         "counter" => getCategoryUnread($link, -2));
1501
1502                 array_push($ret_arr, $cv);
1503
1504                 $result = db_query($link, "SELECT id AS cat_id, value AS unread,
1505                         (SELECT COUNT(id) FROM ttrss_feed_categories AS c2
1506                                 WHERE c2.parent_cat = ttrss_feed_categories.id) AS num_children
1507                         FROM ttrss_feed_categories, ttrss_cat_counters_cache
1508                         WHERE ttrss_cat_counters_cache.feed_id = id AND
1509                         ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid AND
1510                         ttrss_feed_categories.owner_uid = " . $_SESSION["uid"]);
1511
1512                 while ($line = db_fetch_assoc($result)) {
1513                         $line["cat_id"] = (int) $line["cat_id"];
1514
1515                         if ($line["num_children"] > 0) {
1516                                 $child_counter = getCategoryChildrenUnread($link, $line["cat_id"], $_SESSION["uid"]);
1517                         } else {
1518                                 $child_counter = 0;
1519                         }
1520
1521                         $cv = array("id" => $line["cat_id"], "kind" => "cat",
1522                                 "child_counter" => $child_counter,
1523                                 "counter" => $line["unread"]);
1524
1525                         array_push($ret_arr, $cv);
1526                 }
1527
1528                 /* Special case: NULL category doesn't actually exist in the DB */
1529
1530                 $cv = array("id" => 0, "kind" => "cat",
1531                         "counter" => ccache_find($link, 0, $_SESSION["uid"], true));
1532
1533                 array_push($ret_arr, $cv);
1534
1535                 return $ret_arr;
1536         }
1537
1538         // only accepts real cats (>= 0)
1539         function getCategoryChildrenUnread($link, $cat, $owner_uid = false) {
1540                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1541
1542                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories WHERE parent_cat = '$cat'
1543                                 AND owner_uid = $owner_uid");
1544
1545                 $unread = 0;
1546
1547                 while ($line = db_fetch_assoc($result)) {
1548                         $unread += getCategoryUnread($link, $line["id"], $owner_uid);
1549                         $unread += getCategoryChildrenUnread($link, $line["id"], $owner_uid);
1550                 }
1551
1552                 return $unread;
1553         }
1554
1555         function getCategoryUnread($link, $cat, $owner_uid = false) {
1556
1557                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1558
1559                 if ($cat >= 0) {
1560
1561                         if ($cat != 0) {
1562                                 $cat_query = "cat_id = '$cat'";
1563                         } else {
1564                                 $cat_query = "cat_id IS NULL";
1565                         }
1566
1567                         $result = db_query($link, "SELECT id FROM ttrss_feeds WHERE $cat_query
1568                                         AND owner_uid = " . $owner_uid);
1569
1570                         $cat_feeds = array();
1571                         while ($line = db_fetch_assoc($result)) {
1572                                 array_push($cat_feeds, "feed_id = " . $line["id"]);
1573                         }
1574
1575                         if (count($cat_feeds) == 0) return 0;
1576
1577                         $match_part = implode(" OR ", $cat_feeds);
1578
1579                         $result = db_query($link, "SELECT COUNT(int_id) AS unread
1580                                 FROM ttrss_user_entries
1581                                 WHERE   unread = true AND ($match_part)
1582                                 AND owner_uid = " . $owner_uid);
1583
1584                         $unread = 0;
1585
1586                         # this needs to be rewritten
1587                         while ($line = db_fetch_assoc($result)) {
1588                                 $unread += $line["unread"];
1589                         }
1590
1591                         return $unread;
1592                 } else if ($cat == -1) {
1593                         return getFeedUnread($link, -1) + getFeedUnread($link, -2) + getFeedUnread($link, -3) + getFeedUnread($link, 0);
1594                 } else if ($cat == -2) {
1595
1596                         $result = db_query($link, "
1597                                 SELECT COUNT(unread) AS unread FROM
1598                                         ttrss_user_entries, ttrss_user_labels2
1599                                 WHERE article_id = ref_id AND unread = true
1600                                         AND ttrss_user_entries.owner_uid = '$owner_uid'");
1601
1602                         $unread = db_fetch_result($result, 0, "unread");
1603
1604                         return $unread;
1605
1606                 }
1607         }
1608
1609         function getFeedUnread($link, $feed, $is_cat = false) {
1610                 return getFeedArticles($link, $feed, $is_cat, true, $_SESSION["uid"]);
1611         }
1612
1613         function getLabelUnread($link, $label_id, $owner_uid = false) {
1614                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1615
1616                 $result = db_query($link, "SELECT COUNT(ref_id) AS unread FROM ttrss_user_entries, ttrss_user_labels2
1617                         WHERE owner_uid = '$owner_uid' AND unread = true AND label_id = '$label_id' AND article_id = ref_id");
1618
1619                 if (db_num_rows($result) != 0) {
1620                         return db_fetch_result($result, 0, "unread");
1621                 } else {
1622                         return 0;
1623                 }
1624         }
1625
1626         function getFeedArticles($link, $feed, $is_cat = false, $unread_only = false,
1627                 $owner_uid = false) {
1628
1629                 $n_feed = (int) $feed;
1630                 $need_entries = false;
1631
1632                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
1633
1634                 if ($unread_only) {
1635                         $unread_qpart = "unread = true";
1636                 } else {
1637                         $unread_qpart = "true";
1638                 }
1639
1640                 if ($is_cat) {
1641                         return getCategoryUnread($link, $n_feed, $owner_uid);
1642                 } if ($feed != "0" && $n_feed == 0) {
1643
1644                         $feed = db_escape_string($feed);
1645
1646                         $result = db_query($link, "SELECT SUM((SELECT COUNT(int_id)
1647                                 FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1648                                         AND ref_id = id AND $unread_qpart)) AS count FROM ttrss_tags
1649                                 WHERE owner_uid = $owner_uid AND tag_name = '$feed'");
1650                         return db_fetch_result($result, 0, "count");
1651
1652                 } else if ($n_feed == -1) {
1653                         $match_part = "marked = true";
1654                 } else if ($n_feed == -2) {
1655                         $match_part = "published = true";
1656                 } else if ($n_feed == -3) {
1657                         $match_part = "unread = true AND score >= 0";
1658
1659                         $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
1660
1661                         if (DB_TYPE == "pgsql") {
1662                                 $match_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
1663                         } else {
1664                                 $match_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
1665                         }
1666
1667                         $need_entries = true;
1668
1669                 } else if ($n_feed == -4) {
1670                         $match_part = "true";
1671                 } else if ($n_feed >= 0) {
1672
1673                         if ($n_feed != 0) {
1674                                 $match_part = "feed_id = '$n_feed'";
1675                         } else {
1676                                 $match_part = "feed_id IS NULL";
1677                         }
1678
1679                 } else if ($feed < -10) {
1680
1681                         $label_id = -$feed - 11;
1682
1683                         return getLabelUnread($link, $label_id, $owner_uid);
1684
1685                 }
1686
1687                 if ($match_part) {
1688
1689                         if ($need_entries) {
1690                                 $from_qpart = "ttrss_user_entries,ttrss_entries";
1691                                 $from_where = "ttrss_entries.id = ttrss_user_entries.ref_id AND";
1692                         } else {
1693                                 $from_qpart = "ttrss_user_entries";
1694                         }
1695
1696                         $query = "SELECT count(int_id) AS unread
1697                                 FROM $from_qpart WHERE
1698                                 $unread_qpart AND $from_where ($match_part) AND ttrss_user_entries.owner_uid = $owner_uid";
1699
1700                         //echo "[$feed/$query]\n";
1701
1702                         $result = db_query($link, $query);
1703
1704                 } else {
1705
1706                         $result = db_query($link, "SELECT COUNT(post_int_id) AS unread
1707                                 FROM ttrss_tags,ttrss_user_entries,ttrss_entries
1708                                 WHERE tag_name = '$feed' AND post_int_id = int_id AND ref_id = ttrss_entries.id
1709                                 AND $unread_qpart AND ttrss_tags.owner_uid = " . $owner_uid);
1710                 }
1711
1712                 $unread = db_fetch_result($result, 0, "unread");
1713
1714                 return $unread;
1715         }
1716
1717         function getGlobalUnread($link, $user_id = false) {
1718
1719                 if (!$user_id) {
1720                         $user_id = $_SESSION["uid"];
1721                 }
1722
1723                 $result = db_query($link, "SELECT SUM(value) AS c_id FROM ttrss_counters_cache
1724                         WHERE owner_uid = '$user_id' AND feed_id > 0");
1725
1726                 $c_id = db_fetch_result($result, 0, "c_id");
1727
1728                 return $c_id;
1729         }
1730
1731         function getGlobalCounters($link, $global_unread = -1) {
1732                 $ret_arr = array();
1733
1734                 if ($global_unread == -1) {
1735                         $global_unread = getGlobalUnread($link);
1736                 }
1737
1738                 $cv = array("id" => "global-unread",
1739                         "counter" => $global_unread);
1740
1741                 array_push($ret_arr, $cv);
1742
1743                 $result = db_query($link, "SELECT COUNT(id) AS fn FROM
1744                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
1745
1746                 $subscribed_feeds = db_fetch_result($result, 0, "fn");
1747
1748                 $cv = array("id" => "subscribed-feeds",
1749                         "counter" => $subscribed_feeds);
1750
1751                 array_push($ret_arr, $cv);
1752
1753                 return $ret_arr;
1754         }
1755
1756         function getTagCounters($link) {
1757
1758                 $ret_arr = array();
1759
1760                 $result = db_query($link, "SELECT tag_name,SUM((SELECT COUNT(int_id)
1761                         FROM ttrss_user_entries,ttrss_entries WHERE int_id = post_int_id
1762                                 AND ref_id = id AND unread = true)) AS count FROM ttrss_tags
1763                                 WHERE owner_uid = ".$_SESSION['uid']." GROUP BY tag_name
1764                                 ORDER BY count DESC LIMIT 55");
1765
1766                 $tags = array();
1767
1768                 while ($line = db_fetch_assoc($result)) {
1769                         $tags[$line["tag_name"]] += $line["count"];
1770                 }
1771
1772                 foreach (array_keys($tags) as $tag) {
1773                         $unread = $tags[$tag];
1774                         $tag = htmlspecialchars($tag);
1775
1776                         $cv = array("id" => $tag,
1777                                 "kind" => "tag",
1778                                 "counter" => $unread);
1779
1780                         array_push($ret_arr, $cv);
1781                 }
1782
1783                 return $ret_arr;
1784         }
1785
1786         function getVirtCounters($link) {
1787
1788                 $ret_arr = array();
1789
1790                 for ($i = 0; $i >= -4; $i--) {
1791
1792                         $count = getFeedUnread($link, $i);
1793
1794                         $cv = array("id" => $i,
1795                                 "counter" => $count);
1796
1797 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1798 //                              $cv["xmsg"] = getFeedArticles($link, $i)." ".__("total");
1799
1800                         array_push($ret_arr, $cv);
1801                 }
1802
1803                 return $ret_arr;
1804         }
1805
1806         function getLabelCounters($link, $descriptions = false) {
1807
1808                 $ret_arr = array();
1809
1810                 $owner_uid = $_SESSION["uid"];
1811
1812                 $result = db_query($link, "SELECT id, caption FROM ttrss_labels2
1813                         WHERE owner_uid = '$owner_uid'");
1814
1815                 while ($line = db_fetch_assoc($result)) {
1816
1817                         $id = -$line["id"] - 11;
1818
1819                         $label_name = $line["caption"];
1820                         $count = getFeedUnread($link, $id);
1821
1822                         $cv = array("id" => $id,
1823                                 "counter" => $count);
1824
1825                         if ($descriptions)
1826                                 $cv["description"] = $label_name;
1827
1828 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1829 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1830
1831                         array_push($ret_arr, $cv);
1832                 }
1833
1834                 return $ret_arr;
1835         }
1836
1837         function getFeedCounters($link, $active_feed = false) {
1838
1839                 $ret_arr = array();
1840
1841                 $query = "SELECT ttrss_feeds.id,
1842                                 ttrss_feeds.title,
1843                                 ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
1844                                 last_error, value AS count
1845                         FROM ttrss_feeds, ttrss_counters_cache
1846                         WHERE ttrss_feeds.owner_uid = ".$_SESSION["uid"]."
1847                                 AND ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid
1848                                 AND ttrss_counters_cache.feed_id = id";
1849
1850                 $result = db_query($link, $query);
1851                 $fctrs_modified = false;
1852
1853                 while ($line = db_fetch_assoc($result)) {
1854
1855                         $id = $line["id"];
1856                         $count = $line["count"];
1857                         $last_error = htmlspecialchars($line["last_error"]);
1858
1859                         $last_updated = make_local_datetime($link, $line['last_updated'], false);
1860
1861                         $has_img = feed_has_icon($id);
1862
1863                         if (date('Y') - date('Y', strtotime($line['last_updated'])) > 2)
1864                                 $last_updated = '';
1865
1866                         $cv = array("id" => $id,
1867                                 "updated" => $last_updated,
1868                                 "counter" => $count,
1869                                 "has_img" => (int) $has_img);
1870
1871                         if ($last_error)
1872                                 $cv["error"] = $last_error;
1873
1874 //                      if (get_pref($link, 'EXTENDED_FEEDLIST'))
1875 //                              $cv["xmsg"] = getFeedArticles($link, $id)." ".__("total");
1876
1877                         if ($active_feed && $id == $active_feed)
1878                                 $cv["title"] = truncate_string($line["title"], 30);
1879
1880                         array_push($ret_arr, $cv);
1881
1882                 }
1883
1884                 return $ret_arr;
1885         }
1886
1887         function get_pgsql_version($link) {
1888                 $result = db_query($link, "SELECT version() AS version");
1889                 $version = explode(" ", db_fetch_result($result, 0, "version"));
1890                 return $version[1];
1891         }
1892
1893         /**
1894          * @return integer Status code:
1895          *                 0 - OK, Feed already exists
1896          *                 1 - OK, Feed added
1897          *                 2 - Invalid URL
1898          *                 3 - URL content is HTML, no feeds available
1899          *                 4 - URL content is HTML which contains multiple feeds.
1900          *                     Here you should call extractfeedurls in rpc-backend
1901          *                     to get all possible feeds.
1902          *                 5 - Couldn't download the URL content.
1903          */
1904         function subscribe_to_feed($link, $url, $cat_id = 0,
1905                         $auth_login = '', $auth_pass = '', $need_auth = false) {
1906
1907                 require_once "include/rssfuncs.php";
1908
1909                 $url = fix_url($url);
1910
1911                 if (!$url || !validate_feed_url($url)) return 2;
1912
1913                 $update_method = 0;
1914
1915                 $result = db_query($link, "SELECT twitter_oauth FROM ttrss_users
1916                         WHERE id = ".$_SESSION['uid']);
1917
1918                 $has_oauth = db_fetch_result($result, 0, 'twitter_oauth');
1919
1920                 if (!$need_auth || !$has_oauth || strpos($url, '://api.twitter.com') === false) {
1921                         if (!fetch_file_contents($url, false, $auth_login, $auth_pass)) return 5;
1922
1923                         if (url_is_html($url, $auth_login, $auth_pass)) {
1924                                 $feedUrls = get_feeds_from_html($url, $auth_login, $auth_pass);
1925                                 if (count($feedUrls) == 0) {
1926                                         return 3;
1927                                 } else if (count($feedUrls) > 1) {
1928                                         return 4;
1929                                 }
1930                                 //use feed url as new URL
1931                                 $url = key($feedUrls);
1932                         }
1933
1934                         } else {
1935                                 if (!fetch_twitter_rss($link, $url, $_SESSION['uid']))
1936                                         return 5;
1937
1938                                 $update_method = 3;
1939                         }
1940                 if ($cat_id == "0" || !$cat_id) {
1941                         $cat_qpart = "NULL";
1942                 } else {
1943                         $cat_qpart = "'$cat_id'";
1944                 }
1945
1946                 $result = db_query($link,
1947                         "SELECT id FROM ttrss_feeds
1948                         WHERE feed_url = '$url' AND owner_uid = ".$_SESSION["uid"]);
1949
1950                 if (db_num_rows($result) == 0) {
1951                         $result = db_query($link,
1952                                 "INSERT INTO ttrss_feeds
1953                                         (owner_uid,feed_url,title,cat_id, auth_login,auth_pass,update_method)
1954                                 VALUES ('".$_SESSION["uid"]."', '$url',
1955                                 '[Unknown]', $cat_qpart, '$auth_login', '$auth_pass', '$update_method')");
1956
1957                         $result = db_query($link,
1958                                 "SELECT id FROM ttrss_feeds WHERE feed_url = '$url'
1959                                         AND owner_uid = " . $_SESSION["uid"]);
1960
1961                         $feed_id = db_fetch_result($result, 0, "id");
1962
1963                         if ($feed_id) {
1964                                 update_rss_feed($link, $feed_id, true);
1965                         }
1966
1967                         return 1;
1968                 } else {
1969                         return 0;
1970                 }
1971         }
1972
1973         function print_feed_select($link, $id, $default_id = "",
1974                 $attributes = "", $include_all_feeds = true) {
1975
1976                 print "<select id=\"$id\" name=\"$id\" $attributes>";
1977                 if ($include_all_feeds) {
1978                         print "<option value=\"0\">".__('All feeds')."</option>";
1979                 }
1980
1981                 $result = db_query($link, "SELECT id,title FROM ttrss_feeds
1982                         WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
1983
1984                 if (db_num_rows($result) > 0 && $include_all_feeds) {
1985                         print "<option disabled>--------</option>";
1986                 }
1987
1988                 while ($line = db_fetch_assoc($result)) {
1989                         if ($line["id"] == $default_id) {
1990                                 $is_selected = "selected=\"1\"";
1991                         } else {
1992                                 $is_selected = "";
1993                         }
1994
1995                         $title = truncate_string(htmlspecialchars($line["title"]), 40);
1996
1997                         printf("<option $is_selected value='%d'>%s</option>",
1998                                 $line["id"], $title);
1999                 }
2000
2001                 print "</select>";
2002         }
2003
2004         function print_feed_cat_select($link, $id, $default_id,
2005                 $attributes, $include_all_cats = true, $root_id = false, $nest_level = 0) {
2006
2007                         if (!$root_id) {
2008                                         print "<select id=\"$id\" name=\"$id\" default=\"$default_id\" onchange=\"catSelectOnChange(this)\" $attributes>";
2009                         }
2010
2011                         if ($root_id)
2012                                 $parent_qpart = "parent_cat = '$root_id'";
2013                         else
2014                                 $parent_qpart = "parent_cat IS NULL";
2015
2016                         $result = db_query($link, "SELECT id,title,
2017                                 (SELECT COUNT(id) FROM ttrss_feed_categories AS c2 WHERE
2018                                         c2.parent_cat = ttrss_feed_categories.id) AS num_children
2019                                 FROM ttrss_feed_categories
2020                                 WHERE owner_uid = ".$_SESSION["uid"]." AND $parent_qpart ORDER BY title");
2021
2022                         while ($line = db_fetch_assoc($result)) {
2023                                 if ($line["id"] == $default_id) {
2024                                         $is_selected = "selected=\"1\"";
2025                                 } else {
2026                                         $is_selected = "";
2027                                 }
2028
2029                                 for ($i = 0; $i < $nest_level; $i++)
2030                                         $line["title"] = " - " . $line["title"];
2031
2032                                 if ($line["title"])
2033                                         printf("<option $is_selected value='%d'>%s</option>",
2034                                                 $line["id"], htmlspecialchars($line["title"]));
2035
2036                                 if ($line["num_children"] > 0)
2037                                         print_feed_cat_select($link, $id, $default_id, $attributes,
2038                                                 $include_all_cats, $line["id"], $nest_level+1);
2039                         }
2040
2041                         if (!$root_id) {
2042                                 if ($include_all_cats) {
2043                                         if (db_num_rows($result) > 0) {
2044                                                 print "<option disabled=\"1\">--------</option>";
2045                                         }
2046
2047                                         if ($default_id == 0) {
2048                                                 $is_selected = "selected=\"1\"";
2049                                         } else {
2050                                                 $is_selected = "";
2051                                         }
2052
2053                                         print "<option $is_selected value=\"0\">".__('Uncategorized')."</option>";
2054                                 }
2055                                 print "</select>";
2056                         }
2057                 }
2058
2059         function checkbox_to_sql_bool($val) {
2060                 return ($val == "on") ? "true" : "false";
2061         }
2062
2063         function getFeedCatTitle($link, $id) {
2064                 if ($id == -1) {
2065                         return __("Special");
2066                 } else if ($id < -10) {
2067                         return __("Labels");
2068                 } else if ($id > 0) {
2069                         $result = db_query($link, "SELECT ttrss_feed_categories.title
2070                                 FROM ttrss_feeds, ttrss_feed_categories WHERE ttrss_feeds.id = '$id' AND
2071                                         cat_id = ttrss_feed_categories.id");
2072                         if (db_num_rows($result) == 1) {
2073                                 return db_fetch_result($result, 0, "title");
2074                         } else {
2075                                 return __("Uncategorized");
2076                         }
2077                 } else {
2078                         return "getFeedCatTitle($id) failed";
2079                 }
2080
2081         }
2082
2083         function getFeedIcon($id) {
2084                 switch ($id) {
2085                 case 0:
2086                         return "images/archive.png";
2087                         break;
2088                 case -1:
2089                         return "images/mark_set.png";
2090                         break;
2091                 case -2:
2092                         return "images/pub_set.png";
2093                         break;
2094                 case -3:
2095                         return "images/fresh.png";
2096                         break;
2097                 case -4:
2098                         return "images/tag.png";
2099                         break;
2100                 default:
2101                         if ($id < -10) {
2102                                 return "images/label.png";
2103                         } else {
2104                                 if (file_exists(ICONS_DIR . "/$id.ico"))
2105                                         return ICONS_URL . "/$id.ico";
2106                         }
2107                         break;
2108                 }
2109         }
2110
2111         function getFeedTitle($link, $id) {
2112                 if ($id == -1) {
2113                         return __("Starred articles");
2114                 } else if ($id == -2) {
2115                         return __("Published articles");
2116                 } else if ($id == -3) {
2117                         return __("Fresh articles");
2118                 } else if ($id == -4) {
2119                         return __("All articles");
2120                 } else if ($id === 0 || $id === "0") {
2121                         return __("Archived articles");
2122                 } else if ($id < -10) {
2123                         $label_id = -$id - 11;
2124                         $result = db_query($link, "SELECT caption FROM ttrss_labels2 WHERE id = '$label_id'");
2125                         if (db_num_rows($result) == 1) {
2126                                 return db_fetch_result($result, 0, "caption");
2127                         } else {
2128                                 return "Unknown label ($label_id)";
2129                         }
2130
2131                 } else if (is_numeric($id) && $id > 0) {
2132                         $result = db_query($link, "SELECT title FROM ttrss_feeds WHERE id = '$id'");
2133                         if (db_num_rows($result) == 1) {
2134                                 return db_fetch_result($result, 0, "title");
2135                         } else {
2136                                 return "Unknown feed ($id)";
2137                         }
2138                 } else {
2139                         return $id;
2140                 }
2141         }
2142
2143         function make_init_params($link) {
2144                 $params = array();
2145
2146                 $params["theme"] = get_user_theme($link);
2147                 $params["theme_options"] = get_user_theme_options($link);
2148
2149                 $params["sign_progress"] = theme_image($link, "images/indicator_white.gif");
2150                 $params["sign_progress_tiny"] = theme_image($link, "images/indicator_tiny.gif");
2151                 $params["sign_excl"] = theme_image($link, "images/sign_excl.png");
2152                 $params["sign_info"] = theme_image($link, "images/sign_info.png");
2153
2154                 foreach (array("ON_CATCHUP_SHOW_NEXT_FEED", "HIDE_READ_FEEDS",
2155                         "ENABLE_FEED_CATS", "FEEDS_SORT_BY_UNREAD", "CONFIRM_FEED_CATCHUP",
2156                         "CDM_AUTO_CATCHUP", "FRESH_ARTICLE_MAX_AGE", "DEFAULT_ARTICLE_LIMIT",
2157                         "HIDE_READ_SHOWS_SPECIAL", "COMBINED_DISPLAY_MODE") as $param) {
2158
2159                                  $params[strtolower($param)] = (int) get_pref($link, $param);
2160                  }
2161
2162                 $params["icons_url"] = ICONS_URL;
2163                 $params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
2164                 $params["default_include_children"] = get_pref($link, "_DEFAULT_INCLUDE_CHILDREN");
2165                 $params["default_view_mode"] = get_pref($link, "_DEFAULT_VIEW_MODE");
2166                 $params["default_view_limit"] = (int) get_pref($link, "_DEFAULT_VIEW_LIMIT");
2167                 $params["default_view_order_by"] = get_pref($link, "_DEFAULT_VIEW_ORDER_BY");
2168                 $params["bw_limit"] = (int) $_SESSION["bw_limit"];
2169
2170                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2171                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2172
2173                 $max_feed_id = db_fetch_result($result, 0, "mid");
2174                 $num_feeds = db_fetch_result($result, 0, "nf");
2175
2176                 $params["max_feed_id"] = (int) $max_feed_id;
2177                 $params["num_feeds"] = (int) $num_feeds;
2178
2179                 $params["collapsed_feedlist"] = (int) get_pref($link, "_COLLAPSED_FEEDLIST");
2180
2181                 $params["csrf_token"] = $_SESSION["csrf_token"];
2182
2183                 return $params;
2184         }
2185
2186         function make_runtime_info($link) {
2187                 $data = array();
2188
2189                 $result = db_query($link, "SELECT MAX(id) AS mid, COUNT(*) AS nf FROM
2190                         ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
2191
2192                 $max_feed_id = db_fetch_result($result, 0, "mid");
2193                 $num_feeds = db_fetch_result($result, 0, "nf");
2194
2195                 $data["max_feed_id"] = (int) $max_feed_id;
2196                 $data["num_feeds"] = (int) $num_feeds;
2197
2198                 $data['last_article_id'] = getLastArticleId($link);
2199                 $data['cdm_expanded'] = get_pref($link, 'CDM_EXPANDED');
2200
2201                 if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
2202
2203                         $data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
2204
2205                         if (time() - $_SESSION["daemon_stamp_check"] > 30) {
2206
2207                                 $stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
2208
2209                                 if ($stamp) {
2210                                         $stamp_delta = time() - $stamp;
2211
2212                                         if ($stamp_delta > 1800) {
2213                                                 $stamp_check = 0;
2214                                         } else {
2215                                                 $stamp_check = 1;
2216                                                 $_SESSION["daemon_stamp_check"] = time();
2217                                         }
2218
2219                                         $data['daemon_stamp_ok'] = $stamp_check;
2220
2221                                         $stamp_fmt = date("Y.m.d, G:i", $stamp);
2222
2223                                         $data['daemon_stamp'] = $stamp_fmt;
2224                                 }
2225                         }
2226                 }
2227
2228                 if ($_SESSION["last_version_check"] + 86400 + rand(-1000, 1000) < time()) {
2229                                 $new_version_details = @check_for_update($link);
2230
2231                                 $data['new_version_available'] = (int) ($new_version_details != false);
2232
2233                                 $_SESSION["last_version_check"] = time();
2234                 }
2235
2236                 return $data;
2237         }
2238
2239         function search_to_sql($link, $search, $match_on) {
2240
2241                 $search_query_part = "";
2242
2243                 $keywords = explode(" ", $search);
2244                 $query_keywords = array();
2245
2246                 foreach ($keywords as $k) {
2247                         if (strpos($k, "-") === 0) {
2248                                 $k = substr($k, 1);
2249                                 $not = "NOT";
2250                         } else {
2251                                 $not = "";
2252                         }
2253
2254                         $commandpair = explode(":", mb_strtolower($k), 2);
2255
2256                         if ($commandpair[0] == "note" && $commandpair[1]) {
2257
2258                                 if ($commandpair[1] == "true")
2259                                         array_push($query_keywords, "($not (note IS NOT NULL AND note != ''))");
2260                                 else
2261                                         array_push($query_keywords, "($not (note IS NULL OR note = ''))");
2262
2263                         } else if ($commandpair[0] == "star" && $commandpair[1]) {
2264
2265                                 if ($commandpair[1] == "true")
2266                                         array_push($query_keywords, "($not (marked = true))");
2267                                 else
2268                                         array_push($query_keywords, "($not (marked = false))");
2269
2270                         } else if ($commandpair[0] == "pub" && $commandpair[1]) {
2271
2272                                 if ($commandpair[1] == "true")
2273                                         array_push($query_keywords, "($not (published = true))");
2274                                 else
2275                                         array_push($query_keywords, "($not (published = false))");
2276
2277                         } else if (strpos($k, "@") === 0) {
2278
2279                                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $_SESSION['uid']);
2280                                 $orig_ts = strtotime(substr($k, 1));
2281                                 $k = date("Y-m-d", convert_timestamp($orig_ts, $user_tz_string, 'UTC'));
2282
2283                                 //$k = date("Y-m-d", strtotime(substr($k, 1)));
2284
2285                                 array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
2286                         } else if ($match_on == "both") {
2287                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%')
2288                                                 OR UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2289                         } else if ($match_on == "title") {
2290                                 array_push($query_keywords, "(UPPER(ttrss_entries.title) $not LIKE UPPER('%$k%'))");
2291                         } else if ($match_on == "content") {
2292                                 array_push($query_keywords, "(UPPER(ttrss_entries.content) $not LIKE UPPER('%$k%'))");
2293                         }
2294                 }
2295
2296                 $search_query_part = implode("AND", $query_keywords);
2297
2298                 return $search_query_part;
2299         }
2300
2301         function getChildCategories($link, $cat, $owner_uid) {
2302                 $rv = array();
2303
2304                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories
2305                         WHERE parent_cat = '$cat' AND owner_uid = $owner_uid");
2306
2307                 while ($line = db_fetch_assoc($result)) {
2308                         array_push($rv, $line["id"]);
2309                         $rv = array_merge($rv, getChildCategories($link, $line["id"], $owner_uid));
2310                 }
2311
2312                 return $rv;
2313         }
2314
2315         function queryFeedHeadlines($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, $include_children = false) {
2316
2317                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
2318
2319                 $ext_tables_part = "";
2320
2321                         if ($search) {
2322
2323                                 if (SPHINX_ENABLED) {
2324                                         $ids = join(",", @sphinx_search($search, 0, 500));
2325
2326                                         if ($ids)
2327                                                 $search_query_part = "ref_id IN ($ids) AND ";
2328                                         else
2329                                                 $search_query_part = "ref_id = -1 AND ";
2330
2331                                 } else {
2332                                         $search_query_part = search_to_sql($link, $search, $match_on);
2333                                         $search_query_part .= " AND ";
2334                                 }
2335
2336                         } else {
2337                                 $search_query_part = "";
2338                         }
2339
2340                         if ($filter) {
2341                                 $filter_query_part = filter_to_sql($filter);
2342                         } else {
2343                                 $filter_query_part = "";
2344                         }
2345
2346                         if ($since_id) {
2347                                 $since_id_part = "ttrss_entries.id > $since_id AND ";
2348                         } else {
2349                                 $since_id_part = "";
2350                         }
2351
2352                         $view_query_part = "";
2353
2354                         if ($view_mode == "adaptive" || $view_query_part == "noscores") {
2355                                 if ($search) {
2356                                         $view_query_part = " ";
2357                                 } else if ($feed != -1) {
2358                                         $unread = getFeedUnread($link, $feed, $cat_view);
2359
2360                                         if ($cat_view && $feed > 0 && $include_children)
2361                                                 $unread += getCategoryChildrenUnread($link, $feed);
2362
2363                                         if ($unread > 0) {
2364                                                 $view_query_part = " unread = true AND ";
2365                                         }
2366                                 }
2367                         }
2368
2369                         if ($view_mode == "marked") {
2370                                 $view_query_part = " marked = true AND ";
2371                         }
2372
2373                         if ($view_mode == "published") {
2374                                 $view_query_part = " published = true AND ";
2375                         }
2376
2377                         if ($view_mode == "unread") {
2378                                 $view_query_part = " unread = true AND ";
2379                         }
2380
2381                         if ($view_mode == "updated") {
2382                                 $view_query_part = " (last_read is null and unread = false) AND ";
2383                         }
2384
2385                         if ($limit > 0) {
2386                                 $limit_query_part = "LIMIT " . $limit;
2387                         }
2388
2389                         $vfeed_query_part = "";
2390
2391                         // override query strategy and enable feed display when searching globally
2392                         if ($search && $search_mode == "all_feeds") {
2393                                 $query_strategy_part = "ttrss_entries.id > 0";
2394                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2395                         /* tags */
2396                         } else if (preg_match("/^-?[0-9][0-9]*$/", $feed) == false) {
2397                                 $query_strategy_part = "ttrss_entries.id > 0";
2398                                 $vfeed_query_part = "(SELECT title FROM ttrss_feeds WHERE
2399                                         id = feed_id) as feed_title,";
2400                         } else if ($feed > 0 && $search && $search_mode == "this_cat") {
2401
2402                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2403
2404                                 $tmp_result = false;
2405
2406                                 if ($cat_view) {
2407                                         $tmp_result = db_query($link, "SELECT id
2408                                                 FROM ttrss_feeds WHERE cat_id = '$feed'");
2409                                 } else {
2410                                         $tmp_result = db_query($link, "SELECT id
2411                                                 FROM ttrss_feeds WHERE cat_id = (SELECT cat_id FROM ttrss_feeds
2412                                                         WHERE id = '$feed') AND id != '$feed'");
2413                                 }
2414
2415                                 $cat_siblings = array();
2416
2417                                 if (db_num_rows($tmp_result) > 0) {
2418                                         while ($p = db_fetch_assoc($tmp_result)) {
2419                                                 array_push($cat_siblings, "feed_id = " . $p["id"]);
2420                                         }
2421
2422                                         $query_strategy_part = sprintf("(feed_id = %d OR %s)",
2423                                                 $feed, implode(" OR ", $cat_siblings));
2424
2425                                 } else {
2426                                         $query_strategy_part = "ttrss_entries.id > 0";
2427                                 }
2428
2429                         } else if ($feed > 0) {
2430
2431                                 if ($cat_view) {
2432
2433                                         if ($feed > 0) {
2434                                                 if ($include_children) {
2435                                                         # sub-cats
2436                                                         $subcats = getChildCategories($link, $feed, $owner_uid);
2437
2438                                                         if (count($subcats) == 0) {
2439                                                                 $query_strategy_part = "cat_id = '$feed'";
2440                                                         } else {
2441                                                                 array_push($subcats, $feed);
2442                                                                 $query_strategy_part = "cat_id IN (".
2443                                                                         implode(",", $subcats).")";
2444                                                         }
2445                                                 } else {
2446                                                         $query_strategy_part = "cat_id = '$feed'";
2447                                                 }
2448
2449                                         } else {
2450                                                 $query_strategy_part = "cat_id IS NULL";
2451                                         }
2452
2453                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2454
2455                                 } else {
2456                                         $query_strategy_part = "feed_id = '$feed'";
2457                                 }
2458                         } else if ($feed == 0 && !$cat_view) { // archive virtual feed
2459                                 $query_strategy_part = "feed_id IS NULL";
2460                         } else if ($feed == 0 && $cat_view) { // uncategorized
2461                                 $query_strategy_part = "cat_id IS NULL AND feed_id IS NOT NULL";
2462                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2463                         } else if ($feed == -1) { // starred virtual feed
2464                                 $query_strategy_part = "marked = true";
2465                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2466                         } else if ($feed == -2) { // published virtual feed OR labels category
2467
2468                                 if (!$cat_view) {
2469                                         $query_strategy_part = "published = true";
2470                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2471                                 } else {
2472                                         $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2473
2474                                         $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2475
2476                                         $query_strategy_part = "ttrss_labels2.id = ttrss_user_labels2.label_id AND
2477                                                 ttrss_user_labels2.article_id = ref_id";
2478
2479                                 }
2480
2481                         } else if ($feed == -3) { // fresh virtual feed
2482                                 $query_strategy_part = "unread = true AND score >= 0";
2483
2484                                 $intl = get_pref($link, "FRESH_ARTICLE_MAX_AGE", $owner_uid);
2485
2486                                 if (DB_TYPE == "pgsql") {
2487                                         $query_strategy_part .= " AND updated > NOW() - INTERVAL '$intl hour' ";
2488                                 } else {
2489                                         $query_strategy_part .= " AND updated > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
2490                                 }
2491
2492                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2493                         } else if ($feed == -4) { // all articles virtual feed
2494                                 $query_strategy_part = "true";
2495                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2496                         } else if ($feed <= -10) { // labels
2497                                 $label_id = -$feed - 11;
2498
2499                                 $query_strategy_part = "label_id = '$label_id' AND
2500                                         ttrss_labels2.id = ttrss_user_labels2.label_id AND
2501                                         ttrss_user_labels2.article_id = ref_id";
2502
2503                                 $vfeed_query_part = "ttrss_feeds.title AS feed_title,";
2504                                 $ext_tables_part = ",ttrss_labels2,ttrss_user_labels2";
2505
2506                         } else {
2507                                 $query_strategy_part = "id > 0"; // dumb
2508                         }
2509
2510                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
2511                                 $date_sort_field = "updated";
2512                         } else {
2513                                 $date_sort_field = "date_entered";
2514                         }
2515
2516                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
2517                                 $order_by = "$date_sort_field";
2518                         } else {
2519                                 $order_by = "$date_sort_field DESC";
2520                         }
2521
2522                         if ($view_mode != "noscores") {
2523                                 $order_by = "score DESC, $order_by";
2524                         }
2525
2526                         if ($override_order) {
2527                                 $order_by = $override_order;
2528                         }
2529
2530                         $feed_title = "";
2531
2532                         if ($search) {
2533                                 $feed_title = "Search results";
2534                         } else {
2535                                 if ($cat_view) {
2536                                         $feed_title = getCategoryTitle($link, $feed);
2537                                 } else {
2538                                         if (is_numeric($feed) && $feed > 0) {
2539                                                 $result = db_query($link, "SELECT title,site_url,last_error
2540                                                         FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = $owner_uid");
2541
2542                                                 $feed_title = db_fetch_result($result, 0, "title");
2543                                                 $feed_site_url = db_fetch_result($result, 0, "site_url");
2544                                                 $last_error = db_fetch_result($result, 0, "last_error");
2545                                         } else {
2546                                                 $feed_title = getFeedTitle($link, $feed);
2547                                         }
2548                                 }
2549                         }
2550
2551                         $content_query_part = "content as content_preview,";
2552
2553                         if (preg_match("/^-?[0-9][0-9]*$/", $feed) != false) {
2554
2555                                 if ($feed >= 0) {
2556                                         $feed_kind = "Feeds";
2557                                 } else {
2558                                         $feed_kind = "Labels";
2559                                 }
2560
2561                                 if ($limit_query_part) {
2562                                         $offset_query_part = "OFFSET $offset";
2563                                 }
2564
2565                                 if ($vfeed_query_part && get_pref($link, 'VFEED_GROUP_BY_FEED', $owner_uid)) {
2566                                         if (!$override_order) {
2567                                                 $order_by = "ttrss_feeds.title, $order_by";
2568                                         }
2569                                 }
2570
2571                                 if ($feed != "0") {
2572                                         $from_qpart = "ttrss_entries,ttrss_user_entries,ttrss_feeds$ext_tables_part";
2573                                         $feed_check_qpart = "ttrss_user_entries.feed_id = ttrss_feeds.id AND";
2574
2575                                 } else {
2576                                         $from_qpart = "ttrss_entries,ttrss_user_entries$ext_tables_part
2577                                                 LEFT JOIN ttrss_feeds ON (feed_id = ttrss_feeds.id)";
2578                                 }
2579
2580                                 $query = "SELECT DISTINCT
2581                                                 date_entered,
2582                                                 guid,
2583                                                 ttrss_entries.id,ttrss_entries.title,
2584                                                 updated,
2585                                                 label_cache,
2586                                                 tag_cache,
2587                                                 always_display_enclosures,
2588                                                 site_url,
2589                                                 note,
2590                                                 num_comments,
2591                                                 comments,
2592                                                 int_id,
2593                                                 unread,feed_id,marked,published,link,last_read,orig_feed_id,
2594                                                 ".SUBSTRING_FOR_DATE."(last_read,1,19) as last_read_noms,
2595                                                 $vfeed_query_part
2596                                                 $content_query_part
2597                                                 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated_noms,
2598                                                 author,score
2599                                         FROM
2600                                                 $from_qpart
2601                                         WHERE
2602                                         $feed_check_qpart
2603                                         ttrss_user_entries.ref_id = ttrss_entries.id AND
2604                                         ttrss_user_entries.owner_uid = '$owner_uid' AND
2605                                         $search_query_part
2606                                         $filter_query_part
2607                                         $view_query_part
2608                                         $since_id_part
2609                                         $query_strategy_part ORDER BY $order_by
2610                                         $limit_query_part $offset_query_part";
2611
2612                                 if ($_REQUEST["debug"]) print $query;
2613
2614                                 $result = db_query($link, $query);
2615
2616                         } else {
2617                                 // browsing by tag
2618
2619                                 $select_qpart = "SELECT DISTINCT " .
2620                                                                 "date_entered," .
2621                                                                 "guid," .
2622                                                                 "note," .
2623                                                                 "ttrss_entries.id as id," .
2624                                                                 "title," .
2625                                                                 "updated," .
2626                                                                 "unread," .
2627                                                                 "feed_id," .
2628                                                                 "orig_feed_id," .
2629                                                                 "marked," .
2630                                                                 "num_comments, " .
2631                                                                 "comments, " .
2632                                                                 "tag_cache," .
2633                                                                 "label_cache," .
2634                                                                 "link," .
2635                                                                 "last_read," .
2636                                                                 SUBSTRING_FOR_DATE . "(last_read,1,19) as last_read_noms," .
2637                                                                 $since_id_part .
2638                                                                 $vfeed_query_part .
2639                                                                 $content_query_part .
2640                                                                 SUBSTRING_FOR_DATE . "(updated,1,19) as updated_noms," .
2641                                                                 "score ";
2642
2643                                 $feed_kind = "Tags";
2644                                 $all_tags = explode(",", $feed);
2645                                 if ($search_mode == 'any') {
2646                                         $tag_sql = "tag_name in (" . implode(", ", array_map("db_quote", $all_tags)) . ")";
2647                                         $from_qpart = " FROM ttrss_entries,ttrss_user_entries,ttrss_tags ";
2648                                         $where_qpart = " WHERE " .
2649                                                                    "ref_id = ttrss_entries.id AND " .
2650                                                                    "ttrss_user_entries.owner_uid = $owner_uid AND " .
2651                                                                    "post_int_id = int_id AND $tag_sql AND " .
2652                                                                    $view_query_part .
2653                                                                    $search_query_part .
2654                                                                    $query_strategy_part . " ORDER BY $order_by " .
2655                                                                    $limit_query_part;
2656
2657                                 } else {
2658                                         $i = 1;
2659                                         $sub_selects = array();
2660                                         $sub_ands = array();
2661                                         foreach ($all_tags as $term) {
2662                                                 array_push($sub_selects, "(SELECT post_int_id from ttrss_tags WHERE tag_name = " . db_quote($term) . " AND owner_uid = $owner_uid) as A$i");
2663                                                 $i++;
2664                                         }
2665                                         if ($i > 2) {
2666                                                 $x = 1;
2667                                                 $y = 2;
2668                                                 do {
2669                                                         array_push($sub_ands, "A$x.post_int_id = A$y.post_int_id");
2670                                                         $x++;
2671                                                         $y++;
2672                                                 } while ($y < $i);
2673                                         }
2674                                         array_push($sub_ands, "A1.post_int_id = ttrss_user_entries.int_id and ttrss_user_entries.owner_uid = $owner_uid");
2675                                         array_push($sub_ands, "ttrss_user_entries.ref_id = ttrss_entries.id");
2676                                         $from_qpart = " FROM " . implode(", ", $sub_selects) . ", ttrss_user_entries, ttrss_entries";
2677                                         $where_qpart = " WHERE " . implode(" AND ", $sub_ands);
2678                                 }
2679                                 //                              error_log("TAG SQL: " . $tag_sql);
2680                                 // $tag_sql = "tag_name = '$feed'";   DEFAULT way
2681
2682                                 //                              error_log("[". $select_qpart . "][" . $from_qpart . "][" .$where_qpart . "]");
2683                                 $result = db_query($link, $select_qpart . $from_qpart . $where_qpart);
2684                         }
2685
2686                         return array($result, $feed_title, $feed_site_url, $last_error);
2687
2688         }
2689
2690         function sanitize($link, $str, $force_strip_tags = false, $owner = false, $site_url = false) {
2691                 global $purifier;
2692
2693                 if (!$owner) $owner = $_SESSION["uid"];
2694
2695                 $res = trim($str); if (!$res) return '';
2696
2697                 // create global Purifier object if needed
2698                 if (!$purifier) {
2699                         require_once 'lib/htmlpurifier/library/HTMLPurifier.auto.php';
2700
2701                         $config = HTMLPurifier_Config::createDefault();
2702
2703                         $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]";
2704
2705                         $config->set('HTML.SafeObject', true);
2706                         @$config->set('HTML', 'Allowed', $allowed);
2707                         $config->set('Output.FlashCompat', true);
2708                         $config->set('Attr.EnableID', true);
2709                         if (!defined('MOBILE_VERSION')) {
2710                                 @$config->set('Cache', 'SerializerPath', CACHE_DIR . "/htmlpurifier");
2711                         } else {
2712                                 @$config->set('Cache', 'SerializerPath', "../" . CACHE_DIR . "/htmlpurifier");
2713                         }
2714
2715                         $config->set('Filter.YouTube', true);
2716
2717                         $purifier = new HTMLPurifier($config);
2718                 }
2719
2720                 $res = $purifier->purify($res);
2721
2722                 if (get_pref($link, "STRIP_IMAGES", $owner)) {
2723                         $res = preg_replace('/<img[^>]+>/is', '', $res);
2724                 }
2725
2726                 if (strpos($res, "href=") === false)
2727                         $res = rewrite_urls($res);
2728
2729                 $charset_hack = '<head>
2730                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
2731                 </head>';
2732
2733                 $res = trim($res); if (!$res) return '';
2734
2735                 libxml_use_internal_errors(true);
2736
2737                 $doc = new DOMDocument();
2738                 $doc->loadHTML($charset_hack . $res);
2739                 $xpath = new DOMXPath($doc);
2740
2741                 $entries = $xpath->query('(//a[@href]|//img[@src])');
2742                 $br_inserted = 0;
2743
2744                 foreach ($entries as $entry) {
2745
2746                         if ($site_url) {
2747
2748                                 if ($entry->hasAttribute('href'))
2749                                         $entry->setAttribute('href',
2750                                                 rewrite_relative_url($site_url, $entry->getAttribute('href')));
2751
2752                                 if ($entry->hasAttribute('src'))
2753                                         if (preg_match('/^image.php\?i=[a-z0-9]+$/', $entry->getAttribute('src')) == 0)
2754                                                 $entry->setAttribute('src',
2755                                                         rewrite_relative_url($site_url, $entry->getAttribute('src')));
2756                         }
2757
2758                         if (strtolower($entry->nodeName) == "a") {
2759                                 $entry->setAttribute("target", "_blank");
2760                         }
2761
2762                         if (strtolower($entry->nodeName) == "img" && !$br_inserted) {
2763                                 $br = $doc->createElement("br");
2764
2765                                 if ($entry->parentNode->nextSibling) {
2766                                         $entry->parentNode->insertBefore($br, $entry->nextSibling);
2767                                         $br_inserted = 1;
2768                                 }
2769
2770                         }
2771                 }
2772
2773                 $node = $doc->getElementsByTagName('body')->item(0);
2774
2775                 return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
2776         }
2777
2778         /**
2779          * Send by mail a digest of last articles.
2780          *
2781          * @param mixed $link The database connection.
2782          * @param integer $limit The maximum number of articles by digest.
2783          * @return boolean Return false if digests are not enabled.
2784          */
2785         function send_headlines_digests($link, $debug = false) {
2786
2787                 require_once 'lib/phpmailer/class.phpmailer.php';
2788
2789                 $user_limit = 15; // amount of users to process (e.g. emails to send out)
2790                 $limit = 1000; // maximum amount of headlines to include
2791
2792                 if ($debug) _debug("Sending digests, batch of max $user_limit users, headline limit = $limit");
2793
2794                 if (DB_TYPE == "pgsql") {
2795                         $interval_query = "last_digest_sent < NOW() - INTERVAL '1 days'";
2796                 } else if (DB_TYPE == "mysql") {
2797                         $interval_query = "last_digest_sent < DATE_SUB(NOW(), INTERVAL 1 DAY)";
2798                 }
2799
2800                 $result = db_query($link, "SELECT id,email FROM ttrss_users
2801                                 WHERE email != '' AND (last_digest_sent IS NULL OR $interval_query)");
2802
2803                 while ($line = db_fetch_assoc($result)) {
2804
2805                         if (get_pref($link, 'DIGEST_ENABLE', $line['id'], false)) {
2806                                 $preferred_ts = strtotime(get_pref($link, 'DIGEST_PREFERRED_TIME', $line['id'], '00:00'));
2807
2808                                 // try to send digests within 2 hours of preferred time
2809                                 if ($preferred_ts && time() >= $preferred_ts &&
2810                                                 time() - $preferred_ts <= 7200) {
2811
2812                                         if ($debug) print "Sending digest for UID:" . $line['id'] . " - " . $line["email"] . " ... ";
2813
2814                                         $do_catchup = get_pref($link, 'DIGEST_CATCHUP', $line['id'], false);
2815
2816                                         global $tz_offset;
2817
2818                                         // reset tz_offset global to prevent tz cache clash between users
2819                                         $tz_offset = -1;
2820
2821                                         $tuple = prepare_headlines_digest($link, $line["id"], 1, $limit);
2822                                         $digest = $tuple[0];
2823                                         $headlines_count = $tuple[1];
2824                                         $affected_ids = $tuple[2];
2825                                         $digest_text = $tuple[3];
2826
2827                                         if ($headlines_count > 0) {
2828
2829                                                 $mail = new PHPMailer();
2830
2831                                                 $mail->PluginDir = "lib/phpmailer/";
2832                                                 $mail->SetLanguage("en", "lib/phpmailer/language/");
2833
2834                                                 $mail->CharSet = "UTF-8";
2835
2836                                                 $mail->From = SMTP_FROM_ADDRESS;
2837                                                 $mail->FromName = SMTP_FROM_NAME;
2838                                                 $mail->AddAddress($line["email"], $line["login"]);
2839
2840                                                 if (SMTP_HOST) {
2841                                                         $mail->Host = SMTP_HOST;
2842                                                         $mail->Mailer = "smtp";
2843                                                         $mail->SMTPAuth = SMTP_LOGIN != '';
2844                                                         $mail->Username = SMTP_LOGIN;
2845                                                         $mail->Password = SMTP_PASSWORD;
2846                                                 }
2847
2848                                                 $mail->IsHTML(true);
2849                                                 $mail->Subject = DIGEST_SUBJECT;
2850                                                 $mail->Body = $digest;
2851                                                 $mail->AltBody = $digest_text;
2852
2853                                                 $rc = $mail->Send();
2854
2855                                                 if (!$rc && $debug) print "ERROR: " . $mail->ErrorInfo;
2856
2857                                                 if ($debug) print "RC=$rc\n";
2858
2859                                                 if ($rc && $do_catchup) {
2860                                                         if ($debug) print "Marking affected articles as read...\n";
2861                                                         catchupArticlesById($link, $affected_ids, 0, $line["id"]);
2862                                                 }
2863                                         } else {
2864                                                 if ($debug) print "No headlines\n";
2865                                         }
2866
2867                                         db_query($link, "UPDATE ttrss_users SET last_digest_sent = NOW()
2868                                                 WHERE id = " . $line["id"]);
2869
2870                                 }
2871                         }
2872                 }
2873
2874                 if ($debug) _debug("All done.");
2875
2876         }
2877
2878         function prepare_headlines_digest($link, $user_id, $days = 1, $limit = 1000) {
2879
2880                 require_once "lib/MiniTemplator.class.php";
2881
2882                 $tpl = new MiniTemplator;
2883                 $tpl_t = new MiniTemplator;
2884
2885                 $tpl->readTemplateFromFile("templates/digest_template_html.txt");
2886                 $tpl_t->readTemplateFromFile("templates/digest_template.txt");
2887
2888                 $user_tz_string = get_pref($link, 'USER_TIMEZONE', $user_id);
2889                 $local_ts = convert_timestamp(time(), 'UTC', $user_tz_string);
2890
2891                 $tpl->setVariable('CUR_DATE', date('Y/m/d', $local_ts));
2892                 $tpl->setVariable('CUR_TIME', date('G:i', $local_ts));
2893
2894                 $tpl_t->setVariable('CUR_DATE', date('Y/m/d', $local_ts));
2895                 $tpl_t->setVariable('CUR_TIME', date('G:i', $local_ts));
2896
2897                 $affected_ids = array();
2898
2899                 if (DB_TYPE == "pgsql") {
2900                         $interval_query = "ttrss_entries.date_updated > NOW() - INTERVAL '$days days'";
2901                 } else if (DB_TYPE == "mysql") {
2902                         $interval_query = "ttrss_entries.date_updated > DATE_SUB(NOW(), INTERVAL $days DAY)";
2903                 }
2904
2905                 $result = db_query($link, "SELECT ttrss_entries.title,
2906                                 ttrss_feeds.title AS feed_title,
2907                                 COALESCE(ttrss_feed_categories.title, '".__('Uncategorized')."') AS cat_title,
2908                                 date_updated,
2909                                 ttrss_user_entries.ref_id,
2910                                 link,
2911                                 score,
2912                                 content,
2913                                 ".SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
2914                         FROM
2915                                 ttrss_user_entries,ttrss_entries,ttrss_feeds
2916                         LEFT JOIN
2917                                 ttrss_feed_categories ON (cat_id = ttrss_feed_categories.id)
2918                         WHERE
2919                                 ref_id = ttrss_entries.id AND feed_id = ttrss_feeds.id
2920                                 AND include_in_digest = true
2921                                 AND $interval_query
2922                                 AND ttrss_user_entries.owner_uid = $user_id
2923                                 AND unread = true
2924                                 AND score >= 0
2925                         ORDER BY ttrss_feed_categories.title, ttrss_feeds.title, score DESC, date_updated DESC
2926                         LIMIT $limit");
2927
2928                 $cur_feed_title = "";
2929
2930                 $headlines_count = db_num_rows($result);
2931
2932                 $headlines = array();
2933
2934                 while ($line = db_fetch_assoc($result)) {
2935                         array_push($headlines, $line);
2936                 }
2937
2938                 for ($i = 0; $i < sizeof($headlines); $i++) {
2939
2940                         $line = $headlines[$i];
2941
2942                         array_push($affected_ids, $line["ref_id"]);
2943
2944                         $updated = make_local_datetime($link, $line['last_updated'], false,
2945                                 $user_id);
2946
2947 /*                      if ($line["score"] != 0) {
2948                                 if ($line["score"] > 0) $line["score"] = '+' . $line["score"];
2949
2950                                 $line["title"] .= " (".$line['score'].")";
2951                         } */
2952
2953                         if (get_pref($link, 'ENABLE_FEED_CATS', $user_id)) {
2954                                 $line['feed_title'] = $line['cat_title'] . " / " . $line['feed_title'];
2955                         }
2956
2957                         $tpl->setVariable('FEED_TITLE', $line["feed_title"]);
2958                         $tpl->setVariable('ARTICLE_TITLE', $line["title"]);
2959                         $tpl->setVariable('ARTICLE_LINK', $line["link"]);
2960                         $tpl->setVariable('ARTICLE_UPDATED', $updated);
2961                         $tpl->setVariable('ARTICLE_EXCERPT',
2962                                 truncate_string(strip_tags($line["content"]), 300));
2963 //                      $tpl->setVariable('ARTICLE_CONTENT',
2964 //                              strip_tags($article_content));
2965
2966                         $tpl->addBlock('article');
2967
2968                         $tpl_t->setVariable('FEED_TITLE', $line["feed_title"]);
2969                         $tpl_t->setVariable('ARTICLE_TITLE', $line["title"]);
2970                         $tpl_t->setVariable('ARTICLE_LINK', $line["link"]);
2971                         $tpl_t->setVariable('ARTICLE_UPDATED', $updated);
2972 //                      $tpl_t->setVariable('ARTICLE_EXCERPT',
2973 //                              truncate_string(strip_tags($line["excerpt"]), 100));
2974
2975                         $tpl_t->addBlock('article');
2976
2977                         if ($headlines[$i]['feed_title'] != $headlines[$i+1]['feed_title']) {
2978                                 $tpl->addBlock('feed');
2979                                 $tpl_t->addBlock('feed');
2980                         }
2981
2982                 }
2983
2984                 $tpl->addBlock('digest');
2985                 $tpl->generateOutputToString($tmp);
2986
2987                 $tpl_t->addBlock('digest');
2988                 $tpl_t->generateOutputToString($tmp_t);
2989
2990                 return array($tmp, $headlines_count, $affected_ids, $tmp_t);
2991         }
2992
2993         function check_for_update($link) {
2994                 if (CHECK_FOR_NEW_VERSION && $_SESSION['access_level'] >= 10) {
2995                         $version_url = "http://tt-rss.org/version.php?ver=" . VERSION;
2996
2997                         $version_data = @fetch_file_contents($version_url);
2998
2999                         if ($version_data) {
3000                                 $version_data = json_decode($version_data, true);
3001                                 if ($version_data && $version_data['version']) {
3002
3003                                         if (version_compare(VERSION, $version_data['version']) == -1) {
3004                                                 return $version_data;
3005                                         }
3006                                 }
3007                         }
3008                 }
3009                 return false;
3010         }
3011
3012         function markArticlesById($link, $ids, $cmode) {
3013
3014                 $tmp_ids = array();
3015
3016                 foreach ($ids as $id) {
3017                         array_push($tmp_ids, "ref_id = '$id'");
3018                 }
3019
3020                 $ids_qpart = join(" OR ", $tmp_ids);
3021
3022                 if ($cmode == 0) {
3023                         db_query($link, "UPDATE ttrss_user_entries SET
3024                         marked = false,last_read = NOW()
3025                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3026                 } else if ($cmode == 1) {
3027                         db_query($link, "UPDATE ttrss_user_entries SET
3028                         marked = true
3029                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3030                 } else {
3031                         db_query($link, "UPDATE ttrss_user_entries SET
3032                         marked = NOT marked,last_read = NOW()
3033                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3034                 }
3035         }
3036
3037         function publishArticlesById($link, $ids, $cmode) {
3038
3039                 $tmp_ids = array();
3040
3041                 foreach ($ids as $id) {
3042                         array_push($tmp_ids, "ref_id = '$id'");
3043                 }
3044
3045                 $ids_qpart = join(" OR ", $tmp_ids);
3046
3047                 if ($cmode == 0) {
3048                         db_query($link, "UPDATE ttrss_user_entries SET
3049                         published = false,last_read = NOW()
3050                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3051                 } else if ($cmode == 1) {
3052                         db_query($link, "UPDATE ttrss_user_entries SET
3053                         published = true
3054                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3055                 } else {
3056                         db_query($link, "UPDATE ttrss_user_entries SET
3057                         published = NOT published,last_read = NOW()
3058                         WHERE ($ids_qpart) AND owner_uid = " . $_SESSION["uid"]);
3059                 }
3060
3061                 if (PUBSUBHUBBUB_HUB) {
3062                         $rss_link = get_self_url_prefix() .
3063                                 "/public.php?op=rss&id=-2&key=" .
3064                                 get_feed_access_key($link, -2, false);
3065
3066                         $p = new Publisher(PUBSUBHUBBUB_HUB);
3067
3068                         $pubsub_result = $p->publish_update($rss_link);
3069                 }
3070         }
3071
3072         function catchupArticlesById($link, $ids, $cmode, $owner_uid = false) {
3073
3074                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3075                 if (count($ids) == 0) return;
3076
3077                 $tmp_ids = array();
3078
3079                 foreach ($ids as $id) {
3080                         array_push($tmp_ids, "ref_id = '$id'");
3081                 }
3082
3083                 $ids_qpart = join(" OR ", $tmp_ids);
3084
3085                 if ($cmode == 0) {
3086                         db_query($link, "UPDATE ttrss_user_entries SET
3087                         unread = false,last_read = NOW()
3088                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3089                 } else if ($cmode == 1) {
3090                         db_query($link, "UPDATE ttrss_user_entries SET
3091                         unread = true
3092                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3093                 } else {
3094                         db_query($link, "UPDATE ttrss_user_entries SET
3095                         unread = NOT unread,last_read = NOW()
3096                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3097                 }
3098
3099                 /* update ccache */
3100
3101                 $result = db_query($link, "SELECT DISTINCT feed_id FROM ttrss_user_entries
3102                         WHERE ($ids_qpart) AND owner_uid = $owner_uid");
3103
3104                 while ($line = db_fetch_assoc($result)) {
3105                         ccache_update($link, $line["feed_id"], $owner_uid);
3106                 }
3107         }
3108
3109         function catchupArticleById($link, $id, $cmode) {
3110
3111                 if ($cmode == 0) {
3112                         db_query($link, "UPDATE ttrss_user_entries SET
3113                         unread = false,last_read = NOW()
3114                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3115                 } else if ($cmode == 1) {
3116                         db_query($link, "UPDATE ttrss_user_entries SET
3117                         unread = true
3118                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3119                 } else {
3120                         db_query($link, "UPDATE ttrss_user_entries SET
3121                         unread = NOT unread,last_read = NOW()
3122                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
3123                 }
3124
3125                 $feed_id = getArticleFeed($link, $id);
3126                 ccache_update($link, $feed_id, $_SESSION["uid"]);
3127         }
3128
3129         function make_guid_from_title($title) {
3130                 return preg_replace("/[ \"\',.:;]/", "-",
3131                         mb_strtolower(strip_tags($title), 'utf-8'));
3132         }
3133
3134         function get_article_tags($link, $id, $owner_uid = 0, $tag_cache = false) {
3135
3136                 $a_id = db_escape_string($id);
3137
3138                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3139
3140                 $query = "SELECT DISTINCT tag_name,
3141                         owner_uid as owner FROM
3142                         ttrss_tags WHERE post_int_id = (SELECT int_id FROM ttrss_user_entries WHERE
3143                         ref_id = '$a_id' AND owner_uid = '$owner_uid' LIMIT 1) ORDER BY tag_name";
3144
3145                 $obj_id = md5("TAGS:$owner_uid:$id");
3146                 $tags = array();
3147
3148                 /* check cache first */
3149
3150                 if ($tag_cache === false) {
3151                         $result = db_query($link, "SELECT tag_cache FROM ttrss_user_entries
3152                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
3153
3154                         $tag_cache = db_fetch_result($result, 0, "tag_cache");
3155                 }
3156
3157                 if ($tag_cache) {
3158                         $tags = explode(",", $tag_cache);
3159                 } else {
3160
3161                         /* do it the hard way */
3162
3163                         $tmp_result = db_query($link, $query);
3164
3165                         while ($tmp_line = db_fetch_assoc($tmp_result)) {
3166                                 array_push($tags, $tmp_line["tag_name"]);
3167                         }
3168
3169                         /* update the cache */
3170
3171                         $tags_str = db_escape_string(join(",", $tags));
3172
3173                         db_query($link, "UPDATE ttrss_user_entries
3174                                 SET tag_cache = '$tags_str' WHERE ref_id = '$id'
3175                                 AND owner_uid = $owner_uid");
3176                 }
3177
3178                 return $tags;
3179         }
3180
3181         function trim_array($array) {
3182                 $tmp = $array;
3183                 array_walk($tmp, 'trim');
3184                 return $tmp;
3185         }
3186
3187         function tag_is_valid($tag) {
3188                 if ($tag == '') return false;
3189                 if (preg_match("/^[0-9]*$/", $tag)) return false;
3190                 if (mb_strlen($tag) > 250) return false;
3191
3192                 if (function_exists('iconv')) {
3193                         $tag = iconv("utf-8", "utf-8", $tag);
3194                 }
3195
3196                 if (!$tag) return false;
3197
3198                 return true;
3199         }
3200
3201         function render_login_form($link, $mobile = 0) {
3202                 switch ($mobile) {
3203                 case 0:
3204                         require_once "login_form.php";
3205                         break;
3206                 case 1:
3207                         require_once "mobile/login_form.php";
3208                         break;
3209                 case 2:
3210                         require_once "mobile/classic/login_form.php";
3211                 }
3212         }
3213
3214         // from http://developer.apple.com/internet/safari/faq.html
3215         function no_cache_incantation() {
3216                 header("Expires: Mon, 22 Dec 1980 00:00:00 GMT"); // Happy birthday to me :)
3217                 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
3218                 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); // HTTP/1.1
3219                 header("Cache-Control: post-check=0, pre-check=0", false);
3220                 header("Pragma: no-cache"); // HTTP/1.0
3221         }
3222
3223         function format_warning($msg, $id = "") {
3224                 global $link;
3225                 return "<div class=\"warning\" id=\"$id\">
3226                         <img src=\"".theme_image($link, "images/sign_excl.png")."\">$msg</div>";
3227         }
3228
3229         function format_notice($msg, $id = "") {
3230                 global $link;
3231                 return "<div class=\"notice\" id=\"$id\">
3232                         <img src=\"".theme_image($link, "images/sign_info.png")."\">$msg</div>";
3233         }
3234
3235         function format_error($msg, $id = "") {
3236                 global $link;
3237                 return "<div class=\"error\" id=\"$id\">
3238                         <img src=\"".theme_image($link, "images/sign_excl.png")."\">$msg</div>";
3239         }
3240
3241         function print_notice($msg) {
3242                 return print format_notice($msg);
3243         }
3244
3245         function print_warning($msg) {
3246                 return print format_warning($msg);
3247         }
3248
3249         function print_error($msg) {
3250                 return print format_error($msg);
3251         }
3252
3253
3254         function T_sprintf() {
3255                 $args = func_get_args();
3256                 return vsprintf(__(array_shift($args)), $args);
3257         }
3258
3259         function format_inline_player($link, $url, $ctype) {
3260
3261                 $entry = "";
3262
3263                 if (strpos($ctype, "audio/") === 0) {
3264
3265                         if ($_SESSION["hasAudio"] && (strpos($ctype, "ogg") !== false ||
3266                                 strpos($_SERVER['HTTP_USER_AGENT'], "Chrome") !== false ||
3267                                 strpos($_SERVER['HTTP_USER_AGENT'], "Safari") !== false )) {
3268
3269                                 $id = 'AUDIO-' . uniqid();
3270
3271                                 $entry .= "<audio id=\"$id\"\">
3272                                         <source src=\"$url\"></source>
3273                                         </audio>";
3274
3275                                 $entry .= "<span onclick=\"player(this)\"
3276                                         title=\"".__("Click to play")."\" status=\"0\"
3277                                         class=\"player\" audio-id=\"$id\">".__("Play")."</span>";
3278
3279                         } else {
3280
3281                                 $entry .= "<object type=\"application/x-shockwave-flash\"
3282                                         data=\"lib/button/musicplayer.swf?song_url=$url\"
3283                                         width=\"17\" height=\"17\" style='float : left; margin-right : 5px;'>
3284                                         <param name=\"movie\"
3285                                                 value=\"lib/button/musicplayer.swf?song_url=$url\" />
3286                                         </object>";
3287                         }
3288                 }
3289
3290                 $filename = substr($url, strrpos($url, "/")+1);
3291
3292                 $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
3293                         $filename . " (" . $ctype . ")" . "</a>";
3294
3295                 return $entry;
3296         }
3297
3298         function format_article($link, $id, $mark_as_read = true, $zoom_mode = false, $owner_uid = false) {
3299
3300                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
3301
3302                 $rv = array();
3303
3304                 $rv['id'] = $id;
3305
3306                 /* we can figure out feed_id from article id anyway, why do we
3307                  * pass feed_id here? let's ignore the argument :( */
3308
3309                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
3310                         WHERE ref_id = '$id'");
3311
3312                 $feed_id = (int) db_fetch_result($result, 0, "feed_id");
3313
3314                 $rv['feed_id'] = $feed_id;
3315
3316                 //if (!$zoom_mode) { print "<article id='$id'><![CDATA["; };
3317
3318                 $result = db_query($link, "SELECT rtl_content, always_display_enclosures FROM ttrss_feeds
3319                         WHERE id = '$feed_id' AND owner_uid = $owner_uid");
3320
3321                 if (db_num_rows($result) == 1) {
3322                         $rtl_content = sql_bool_to_bool(db_fetch_result($result, 0, "rtl_content"));
3323                         $always_display_enclosures = sql_bool_to_bool(db_fetch_result($result, 0, "always_display_enclosures"));
3324                 } else {
3325                         $rtl_content = false;
3326                         $always_display_enclosures = false;
3327                 }
3328
3329                 if ($rtl_content) {
3330                         $rtl_tag = "dir=\"RTL\"";
3331                         $rtl_class = "RTL";
3332                 } else {
3333                         $rtl_tag = "";
3334                         $rtl_class = "";
3335                 }
3336
3337                 if ($mark_as_read) {
3338                         $result = db_query($link, "UPDATE ttrss_user_entries
3339                                 SET unread = false,last_read = NOW()
3340                                 WHERE ref_id = '$id' AND owner_uid = $owner_uid");
3341
3342                         ccache_update($link, $feed_id, $owner_uid);
3343                 }
3344
3345                 $result = db_query($link, "SELECT title,link,content,feed_id,comments,int_id,
3346                         ".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
3347                         (SELECT icon_url FROM ttrss_feeds WHERE id = feed_id) as icon_url,
3348                         (SELECT site_url FROM ttrss_feeds WHERE id = feed_id) as site_url,
3349                         num_comments,
3350                         tag_cache,
3351                         author,
3352                         orig_feed_id,
3353                         note
3354                         FROM ttrss_entries,ttrss_user_entries
3355                         WHERE   id = '$id' AND ref_id = id AND owner_uid = $owner_uid");
3356
3357                 if ($result) {
3358
3359                         $line = db_fetch_assoc($result);
3360
3361                         if ($line["icon_url"]) {
3362                                 $feed_icon = "<img src=\"" . $line["icon_url"] . "\">";
3363                         } else {
3364                                 $feed_icon = "&nbsp;";
3365                         }
3366
3367                         $feed_site_url = $line['site_url'];
3368
3369                         $num_comments = $line["num_comments"];
3370                         $entry_comments = "";
3371
3372                         if ($num_comments > 0) {
3373                                 if ($line["comments"]) {
3374                                         $comments_url = $line["comments"];
3375                                 } else {
3376                                         $comments_url = $line["link"];
3377                                 }
3378                                 $entry_comments = "<a target='_blank' href=\"$comments_url\">$num_comments comments</a>";
3379                         } else {
3380                                 if ($line["comments"] && $line["link"] != $line["comments"]) {
3381                                         $entry_comments = "<a target='_blank' href=\"".$line["comments"]."\">comments</a>";
3382                                 }
3383                         }
3384
3385                         if ($zoom_mode) {
3386                                 header("Content-Type: text/html");
3387                                 $rv['content'] .= "<html><head>
3388                                                 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
3389                                                 <title>Tiny Tiny RSS - ".$line["title"]."</title>
3390                                                 <link rel=\"stylesheet\" type=\"text/css\" href=\"tt-rss.css\">
3391                                         </head><body>";
3392                         }
3393
3394                         $title_escaped = db_escape_string($line['title']);
3395
3396                         $rv['content'] .= "<div id=\"PTITLE-$id\" style=\"display : none\">" .
3397                                 truncate_string(strip_tags($line['title']), 15) . "</div>";
3398
3399                         $rv['content'] .= "<div id=\"PTITLE-FULL-$id\" style=\"display : none\">" .
3400                                 strip_tags($line['title']) . "</div>";
3401
3402                         $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";
3403
3404                         $rv['content'] .= "<div onclick=\"return postClicked(event, $id)\"
3405                                 class=\"postHeader\" id=\"POSTHDR-$id\">";
3406
3407                         $entry_author = $line["author"];
3408
3409                         if ($entry_author) {
3410                                 $entry_author = __(" - ") . $entry_author;
3411                         }
3412
3413                         $parsed_updated = make_local_datetime($link, $line["updated"], true,
3414                                 $owner_uid, true);
3415
3416                         $rv['content'] .= "<div class=\"postDate$rtl_class\">$parsed_updated</div>";
3417
3418                         if ($line["link"]) {
3419                                 $rv['content'] .= "<div class='postTitle' clear='both'><a target='_blank'
3420                                         title=\"".htmlspecialchars($line['title'])."\"
3421                                         href=\"" .
3422                                         $line["link"] . "\">" .
3423                                         truncate_string($line["title"], 100) .
3424                                         "<span class='author'>$entry_author</span></a></div>";
3425                         } else {
3426                                 $rv['content'] .= "<div class='postTitle' clear='both'>" . $line["title"] . "$entry_author</div>";
3427                         }
3428
3429                         $tag_cache = $line["tag_cache"];
3430
3431                         if (!$tag_cache)
3432                                 $tags = get_article_tags($link, $id, $owner_uid);
3433                         else
3434                                 $tags = explode(",", $tag_cache);
3435
3436                         $tags_str = format_tags_string($tags, $id);
3437                         $tags_str_full = join(", ", $tags);
3438
3439                         if (!$tags_str_full) $tags_str_full = __("no tags");
3440
3441                         if (!$entry_comments) $entry_comments = "&nbsp;"; # placeholder
3442
3443                         $rv['content'] .= "<div class='postTags' style='float : right'>
3444                                 <img src='".theme_image($link, 'images/tag.png')."'
3445                                 class='tagsPic' alt='Tags' title='Tags'>&nbsp;";
3446
3447                         if (!$zoom_mode) {
3448                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>
3449                                         <a title=\"".__('Edit tags for this article')."\"
3450                                         href=\"#\" onclick=\"editArticleTags($id, $feed_id)\">(+)</a>";
3451
3452                                 $rv['content'] .= "<div dojoType=\"dijit.Tooltip\"
3453                                         id=\"ATSTRTIP-$id\" connectId=\"ATSTR-$id\"
3454                                         position=\"below\">$tags_str_full</div>";
3455
3456                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/art-zoom.png')."\"
3457                                                 class='tagsPic' style=\"cursor : pointer\"
3458                                                 onclick=\"postOpenInNewTab(event, $id)\"
3459                                                 alt='Zoom' title='".__('Open article in new tab')."'>";
3460
3461                                 $button_plugins = explode(",", ARTICLE_BUTTON_PLUGINS);
3462
3463                                 foreach ($button_plugins as $p) {
3464                                         $pclass = trim("${p}_button");
3465
3466                                         if (class_exists($pclass)) {
3467                                                 $plugin = new $pclass($link);
3468                                                 $rv['content'] .= $plugin->render($id, $line);
3469                                         }
3470                                 }
3471
3472                                 $rv['content'] .= "<img src=\"".theme_image($link, 'images/digest_checkbox.png')."\"
3473                                                 class='tagsPic' style=\"cursor : pointer\"
3474                                                 onclick=\"closeArticlePanel($id)\"
3475                                                 title='".__('Close article')."'>";
3476
3477                         } else {
3478                                 $tags_str = strip_tags($tags_str);
3479                                 $rv['content'] .= "<span id=\"ATSTR-$id\">$tags_str</span>";
3480                         }
3481                         $rv['content'] .= "</div>";
3482                         $rv['content'] .= "<div clear='both'>$entry_comments</div>";
3483
3484                         if ($line["orig_feed_id"]) {
3485
3486                                 $tmp_result = db_query($link, "SELECT * FROM ttrss_archived_feeds
3487                                         WHERE id = ".$line["orig_feed_id"]);
3488
3489                                 if (db_num_rows($tmp_result) != 0) {
3490
3491                                         $rv['content'] .= "<div clear='both'>";
3492                                         $rv['content'] .= __("Originally from:");
3493
3494                                         $rv['content'] .= "&nbsp;";
3495
3496                                         $tmp_line = db_fetch_assoc($tmp_result);
3497
3498                                         $rv['content'] .= "<a target='_blank'
3499                                                 href=' " . htmlspecialchars($tmp_line['site_url']) . "'>" .
3500                                                 $tmp_line['title'] . "</a>";
3501
3502                                         $rv['content'] .= "&nbsp;";
3503
3504                                         $rv['content'] .= "<a target='_blank' href='" . htmlspecialchars($tmp_line['feed_url']) . "'>";
3505                                         $rv['content'] .= "<img title='".__('Feed URL')."'class='tinyFeedIcon' src='images/pub_set.png'></a>";
3506
3507                                         $rv['content'] .= "</div>";
3508                                 }
3509                         }
3510
3511                         $rv['content'] .= "</div>";
3512
3513                         $rv['content'] .= "<div id=\"POSTNOTE-$id\">";
3514                                 if ($line['note']) {
3515                                         $rv['content'] .= format_article_note($id, $line['note']);
3516                                 }
3517                         $rv['content'] .= "</div>";
3518
3519                         $rv['content'] .= "<div class=\"postIcon\">" .
3520                                 "<a target=\"_blank\" title=\"".__("Visit the website")."\"$
3521                                 href=\"".htmlspecialchars($feed_site_url)."\">".
3522                                 $feed_icon . "</a></div>";
3523
3524                         $rv['content'] .= "<div class=\"postContent\">";
3525
3526                         // N-grams
3527
3528                         if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_RELATED_THRESHOLD')) {
3529
3530                                 $ngram_result = db_query($link, "SELECT id,title FROM
3531                                                 ttrss_entries,ttrss_user_entries
3532                                         WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
3533                                                 AND similarity(title, '$title_escaped') >= "._NGRAM_TITLE_RELATED_THRESHOLD."
3534                                                 AND title != '$title_escaped'
3535                                                 AND owner_uid = $owner_uid");
3536
3537                                 if (db_num_rows($ngram_result) > 0) {
3538                                         $rv['content'] .= "<div dojoType=\"dijit.form.DropDownButton\">".
3539                                                 "<span>" . __('Related')."</span>";
3540                                         $rv['content'] .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
3541
3542                                         while ($nline = db_fetch_assoc($ngram_result)) {
3543                                                 $rv['content'] .= "<div onclick=\"hlOpenInNewTab(null,".$nline['id'].")\"
3544                                                         dojoType=\"dijit.MenuItem\">".$nline['title']."</div>";
3545
3546                                         }
3547                                         $rv['content'] .= "</div></div><br/";
3548                                 }
3549                         }
3550
3551                         $article_content = sanitize($link, $line["content"], false, $owner_uid,
3552                                 $feed_site_url);
3553
3554                         $rv['content'] .= $article_content;
3555
3556                         $rv['content'] .= format_article_enclosures($link, $id,
3557                                 $always_display_enclosures, $article_content);
3558
3559                         $rv['content'] .= "</div>";
3560
3561                         $rv['content'] .= "</div>";
3562
3563                 }
3564
3565                 if ($zoom_mode) {
3566                         $rv['content'] .= "
3567                                 <div style=\"text-align : center\">
3568                                 <button onclick=\"return window.close()\">".
3569                                         __("Close this window")."</button></div>";
3570                         $rv['content'] .= "</body></html>";
3571                 }
3572
3573                 return $rv;
3574
3575         }
3576
3577         function print_checkpoint($n, $s) {
3578                 $ts = getmicrotime();
3579                 echo sprintf("<!-- CP[$n] %.4f seconds -->", $ts - $s);
3580                 return $ts;
3581         }
3582
3583         function sanitize_tag($tag) {
3584                 $tag = trim($tag);
3585
3586                 $tag = mb_strtolower($tag, 'utf-8');
3587
3588                 $tag = preg_replace('/[\'\"\+\>\<]/', "", $tag);
3589
3590 //              $tag = str_replace('"', "", $tag);
3591 //              $tag = str_replace("+", " ", $tag);
3592                 $tag = str_replace("technorati tag: ", "", $tag);
3593
3594                 return $tag;
3595         }
3596
3597         function get_self_url_prefix() {
3598                 return SELF_URL_PATH;
3599         }
3600
3601         function opml_publish_url($link){
3602
3603                 $url_path = get_self_url_prefix();
3604                 $url_path .= "/opml.php?op=publish&key=" .
3605                         get_feed_access_key($link, 'OPML:Publish', false, $_SESSION["uid"]);
3606
3607                 return $url_path;
3608         }
3609
3610         /**
3611          * Purge a feed contents, marked articles excepted.
3612          *
3613          * @param mixed $link The database connection.
3614          * @param integer $id The id of the feed to purge.
3615          * @return void
3616          */
3617         function clear_feed_articles($link, $id) {
3618
3619                 if ($id != 0) {
3620                         $result = db_query($link, "DELETE FROM ttrss_user_entries
3621                         WHERE feed_id = '$id' AND marked = false AND owner_uid = " . $_SESSION["uid"]);
3622                 } else {
3623                         $result = db_query($link, "DELETE FROM ttrss_user_entries
3624                         WHERE feed_id IS NULL AND marked = false AND owner_uid = " . $_SESSION["uid"]);
3625                 }
3626
3627                 $result = db_query($link, "DELETE FROM ttrss_entries WHERE
3628                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
3629
3630                 ccache_update($link, $id, $_SESSION['uid']);
3631         } // function clear_feed_articles
3632
3633         /**
3634          * Compute the Mozilla Firefox feed adding URL from server HOST and REQUEST_URI.
3635          *
3636          * @return string The Mozilla Firefox feed adding URL.
3637          */
3638         function add_feed_url() {
3639                 //$url_path = ($_SERVER['HTTPS'] != "on" ? 'http://' :  'https://') . $_SERVER["HTTP_HOST"] . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
3640
3641                 $url_path = get_self_url_prefix() .
3642                         "/backend.php?op=pref-feeds&quiet=1&method=add&feed_url=%s";
3643                 return $url_path;
3644         } // function add_feed_url
3645
3646         function encrypt_password($pass, $salt = '', $mode2 = false) {
3647                 if ($salt && $mode2) {
3648                         return "MODE2:" . hash('sha256', $salt . $pass);
3649                 } else if ($salt) {
3650                         return "SHA1X:" . sha1("$salt:$pass");
3651                 } else {
3652                         return "SHA1:" . sha1($pass);
3653                 }
3654         } // function encrypt_password
3655
3656         function sanitize_article_content($text) {
3657                 # we don't support CDATA sections in articles, they break our own escaping
3658                 $text = preg_replace("/\[\[CDATA/", "", $text);
3659                 $text = preg_replace("/\]\]\>/", "", $text);
3660                 return $text;
3661         }
3662
3663         function load_filters($link, $feed, $owner_uid, $action_id = false) {
3664                 $filters = array();
3665
3666
3667                 if ($action_id) $ftype_query_part = "action_id = '$action_id' AND";
3668
3669                 $result = db_query($link, "SELECT reg_exp,
3670                         ttrss_filter_types.name AS name,
3671                         ttrss_filter_actions.name AS action,
3672                         inverse,
3673                         action_param,
3674                         filter_param
3675                         FROM ttrss_filters
3676                                 LEFT JOIN ttrss_feeds ON (ttrss_feeds.id = '$feed'),
3677                                 ttrss_filter_types,ttrss_filter_actions
3678                         WHERE
3679                                 enabled = true AND
3680                                 $ftype_query_part
3681                                 ttrss_filters.owner_uid = $owner_uid AND
3682                                 ttrss_filter_types.id = filter_type AND
3683                                 ttrss_filter_actions.id = action_id AND
3684                                 ((cat_filter = true AND ttrss_feeds.cat_id = ttrss_filters.cat_id) OR
3685                                 (cat_filter = true AND ttrss_feeds.cat_id IS NULL AND
3686                                         ttrss_filters.cat_id IS NULL) OR
3687                                 (cat_filter = false AND (feed_id IS NULL OR feed_id = '$feed')))
3688                         ORDER BY reg_exp");
3689
3690                 while ($line = db_fetch_assoc($result)) {
3691
3692                         if (!$filters[$line["name"]]) $filters[$line["name"]] = array();
3693                                 $filter["reg_exp"] = $line["reg_exp"];
3694                                 $filter["action"] = $line["action"];
3695                                 $filter["action_param"] = $line["action_param"];
3696                                 $filter["filter_param"] = $line["filter_param"];
3697                                 $filter["inverse"] = sql_bool_to_bool($line["inverse"]);
3698
3699                                 array_push($filters[$line["name"]], $filter);
3700                         }
3701
3702
3703                 return $filters;
3704         }
3705
3706         function get_score_pic($score) {
3707                 if ($score > 100) {
3708                         return "score_high.png";
3709                 } else if ($score > 0) {
3710                         return "score_half_high.png";
3711                 } else if ($score < -100) {
3712                         return "score_low.png";
3713                 } else if ($score < 0) {
3714                         return "score_half_low.png";
3715                 } else {
3716                         return "score_neutral.png";
3717                 }
3718         }
3719
3720         function feed_has_icon($id) {
3721                 return is_file(ICONS_DIR . "/$id.ico") && filesize(ICONS_DIR . "/$id.ico") > 0;
3722         }
3723
3724         function init_connection($link) {
3725                 if ($link) {
3726
3727                         if (DB_TYPE == "pgsql") {
3728                                 pg_query($link, "set client_encoding = 'UTF-8'");
3729                                 pg_set_client_encoding("UNICODE");
3730                                 pg_query($link, "set datestyle = 'ISO, european'");
3731                                 pg_query($link, "set TIME ZONE 0");
3732                         } else {
3733                                 db_query($link, "SET time_zone = '+0:0'");
3734
3735                                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
3736                                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
3737                                 }
3738                         }
3739                         return true;
3740                 } else {
3741                         print "Unable to connect to database:" . db_last_error();
3742                         return false;
3743                 }
3744         }
3745
3746         /* function ccache_zero($link, $feed_id, $owner_uid) {
3747                 db_query($link, "UPDATE ttrss_counters_cache SET
3748                         value = 0, updated = NOW() WHERE
3749                         feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3750         } */
3751
3752         function ccache_zero_all($link, $owner_uid) {
3753                 db_query($link, "UPDATE ttrss_counters_cache SET
3754                         value = 0 WHERE owner_uid = '$owner_uid'");
3755
3756                 db_query($link, "UPDATE ttrss_cat_counters_cache SET
3757                         value = 0 WHERE owner_uid = '$owner_uid'");
3758         }
3759
3760         function ccache_remove($link, $feed_id, $owner_uid, $is_cat = false) {
3761
3762                 if (!$is_cat) {
3763                         $table = "ttrss_counters_cache";
3764                 } else {
3765                         $table = "ttrss_cat_counters_cache";
3766                 }
3767
3768                 db_query($link, "DELETE FROM $table WHERE
3769                         feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3770
3771         }
3772
3773         function ccache_update_all($link, $owner_uid) {
3774
3775                 if (get_pref($link, 'ENABLE_FEED_CATS', $owner_uid)) {
3776
3777                         $result = db_query($link, "SELECT feed_id FROM ttrss_cat_counters_cache
3778                                 WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
3779
3780                         while ($line = db_fetch_assoc($result)) {
3781                                 ccache_update($link, $line["feed_id"], $owner_uid, true);
3782                         }
3783
3784                         /* We have to manually include category 0 */
3785
3786                         ccache_update($link, 0, $owner_uid, true);
3787
3788                 } else {
3789                         $result = db_query($link, "SELECT feed_id FROM ttrss_counters_cache
3790                                 WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
3791
3792                         while ($line = db_fetch_assoc($result)) {
3793                                 print ccache_update($link, $line["feed_id"], $owner_uid);
3794
3795                         }
3796
3797                 }
3798         }
3799
3800         function ccache_find($link, $feed_id, $owner_uid, $is_cat = false,
3801                 $no_update = false) {
3802
3803                 if (!is_numeric($feed_id)) return;
3804
3805                 if (!$is_cat) {
3806                         $table = "ttrss_counters_cache";
3807                         if ($feed_id > 0) {
3808                                 $tmp_result = db_query($link, "SELECT owner_uid FROM ttrss_feeds
3809                                         WHERE id = '$feed_id'");
3810                                 $owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
3811                         }
3812                 } else {
3813                         $table = "ttrss_cat_counters_cache";
3814                 }
3815
3816                 if (DB_TYPE == "pgsql") {
3817                         $date_qpart = "updated > NOW() - INTERVAL '15 minutes'";
3818                 } else if (DB_TYPE == "mysql") {
3819                         $date_qpart = "updated > DATE_SUB(NOW(), INTERVAL 15 MINUTE)";
3820                 }
3821
3822                 $result = db_query($link, "SELECT value FROM $table
3823                         WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id'
3824                         LIMIT 1");
3825
3826                 if (db_num_rows($result) == 1) {
3827                         return db_fetch_result($result, 0, "value");
3828                 } else {
3829                         if ($no_update) {
3830                                 return -1;
3831                         } else {
3832                                 return ccache_update($link, $feed_id, $owner_uid, $is_cat);
3833                         }
3834                 }
3835
3836         }
3837
3838         function ccache_update($link, $feed_id, $owner_uid, $is_cat = false,
3839                 $update_pcat = true) {
3840
3841                 if (!is_numeric($feed_id)) return;
3842
3843                 if (!$is_cat && $feed_id > 0) {
3844                         $tmp_result = db_query($link, "SELECT owner_uid FROM ttrss_feeds
3845                                 WHERE id = '$feed_id'");
3846                         $owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
3847                 }
3848
3849                 $prev_unread = ccache_find($link, $feed_id, $owner_uid, $is_cat, true);
3850
3851                 /* When updating a label, all we need to do is recalculate feed counters
3852                  * because labels are not cached */
3853
3854                 if ($feed_id < 0) {
3855                         ccache_update_all($link, $owner_uid);
3856                         return;
3857                 }
3858
3859                 if (!$is_cat) {
3860                         $table = "ttrss_counters_cache";
3861                 } else {
3862                         $table = "ttrss_cat_counters_cache";
3863                 }
3864
3865                 if ($is_cat && $feed_id >= 0) {
3866                         if ($feed_id != 0) {
3867                                 $cat_qpart = "cat_id = '$feed_id'";
3868                         } else {
3869                                 $cat_qpart = "cat_id IS NULL";
3870                         }
3871
3872                         /* Recalculate counters for child feeds */
3873
3874                         $result = db_query($link, "SELECT id FROM ttrss_feeds
3875                                                 WHERE owner_uid = '$owner_uid' AND $cat_qpart");
3876
3877                         while ($line = db_fetch_assoc($result)) {
3878                                 ccache_update($link, $line["id"], $owner_uid, false, false);
3879                         }
3880
3881                         $result = db_query($link, "SELECT SUM(value) AS sv
3882                                 FROM ttrss_counters_cache, ttrss_feeds
3883                                 WHERE id = feed_id AND $cat_qpart AND
3884                                 ttrss_feeds.owner_uid = '$owner_uid'");
3885
3886                         $unread = (int) db_fetch_result($result, 0, "sv");
3887
3888                 } else {
3889                         $unread = (int) getFeedArticles($link, $feed_id, $is_cat, true, $owner_uid);
3890                 }
3891
3892                 db_query($link, "BEGIN");
3893
3894                 $result = db_query($link, "SELECT feed_id FROM $table
3895                         WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id' LIMIT 1");
3896
3897                 if (db_num_rows($result) == 1) {
3898                         db_query($link, "UPDATE $table SET
3899                                 value = '$unread', updated = NOW() WHERE
3900                                 feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
3901
3902                 } else {
3903                         db_query($link, "INSERT INTO $table
3904                                 (feed_id, value, owner_uid, updated)
3905                                 VALUES
3906                                 ($feed_id, $unread, $owner_uid, NOW())");
3907                 }
3908
3909                 db_query($link, "COMMIT");
3910
3911                 if ($feed_id > 0 && $prev_unread != $unread) {
3912
3913                         if (!$is_cat) {
3914
3915                                 /* Update parent category */
3916
3917                                 if ($update_pcat) {
3918
3919                                         $result = db_query($link, "SELECT cat_id FROM ttrss_feeds
3920                                                 WHERE owner_uid = '$owner_uid' AND id = '$feed_id'");
3921
3922                                         $cat_id = (int) db_fetch_result($result, 0, "cat_id");
3923
3924                                         ccache_update($link, $cat_id, $owner_uid, true);
3925
3926                                 }
3927                         }
3928                 } else if ($feed_id < 0) {
3929                         ccache_update_all($link, $owner_uid);
3930                 }
3931
3932                 return $unread;
3933         }
3934
3935         /* function ccache_cleanup($link, $owner_uid) {
3936
3937                 if (DB_TYPE == "pgsql") {
3938                         db_query($link, "DELETE FROM ttrss_counters_cache AS c1 WHERE
3939                                 (SELECT count(*) FROM ttrss_counters_cache AS c2
3940                                         WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
3941                                         AND owner_uid = '$owner_uid'");
3942
3943                         db_query($link, "DELETE FROM ttrss_cat_counters_cache AS c1 WHERE
3944                                 (SELECT count(*) FROM ttrss_cat_counters_cache AS c2
3945                                         WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
3946                                         AND owner_uid = '$owner_uid'");
3947                 } else {
3948                         db_query($link, "DELETE c1 FROM
3949                                         ttrss_counters_cache AS c1,
3950                                         ttrss_counters_cache AS c2
3951                                 WHERE
3952                                         c1.owner_uid = '$owner_uid' AND
3953                                         c1.owner_uid = c2.owner_uid AND
3954                                         c1.feed_id = c2.feed_id");
3955
3956                         db_query($link, "DELETE c1 FROM
3957                                         ttrss_cat_counters_cache AS c1,
3958                                         ttrss_cat_counters_cache AS c2
3959                                 WHERE
3960                                         c1.owner_uid = '$owner_uid' AND
3961                                         c1.owner_uid = c2.owner_uid AND
3962                                         c1.feed_id = c2.feed_id");
3963
3964                 }
3965         } */
3966
3967         function label_find_id($link, $label, $owner_uid) {
3968                 $result = db_query($link,
3969                         "SELECT id FROM ttrss_labels2 WHERE caption = '$label'
3970                                 AND owner_uid = '$owner_uid' LIMIT 1");
3971
3972                 if (db_num_rows($result) == 1) {
3973                         return db_fetch_result($result, 0, "id");
3974                 } else {
3975                         return 0;
3976                 }
3977         }
3978
3979         function get_article_labels($link, $id) {
3980                 $rv = array();
3981
3982
3983                 $result = db_query($link, "SELECT label_cache FROM
3984                         ttrss_user_entries WHERE ref_id = '$id' AND owner_uid = " .
3985                         $_SESSION["uid"]);
3986
3987                 $label_cache = db_fetch_result($result, 0, "label_cache");
3988
3989                 if ($label_cache) {
3990
3991                         $label_cache = json_decode($label_cache, true);
3992
3993                         if ($label_cache["no-labels"] == 1)
3994                                 return $rv;
3995                         else
3996                                 return $label_cache;
3997                 }
3998
3999                 $result = db_query($link,
4000                         "SELECT DISTINCT label_id,caption,fg_color,bg_color
4001                                 FROM ttrss_labels2, ttrss_user_labels2
4002                         WHERE id = label_id
4003                                 AND article_id = '$id'
4004                                 AND owner_uid = ".$_SESSION["uid"] . "
4005                         ORDER BY caption");
4006
4007                 while ($line = db_fetch_assoc($result)) {
4008                         $rk = array($line["label_id"], $line["caption"], $line["fg_color"],
4009                                 $line["bg_color"]);
4010                         array_push($rv, $rk);
4011                 }
4012
4013                 if (count($rv) > 0)
4014                         label_update_cache($link, $id, $rv);
4015                 else
4016                         label_update_cache($link, $id, array("no-labels" => 1));
4017
4018                 return $rv;
4019         }
4020
4021
4022         function label_find_caption($link, $label, $owner_uid) {
4023                 $result = db_query($link,
4024                         "SELECT caption FROM ttrss_labels2 WHERE id = '$label'
4025                                 AND owner_uid = '$owner_uid' LIMIT 1");
4026
4027                 if (db_num_rows($result) == 1) {
4028                         return db_fetch_result($result, 0, "caption");
4029                 } else {
4030                         return "";
4031                 }
4032         }
4033
4034         function label_update_cache($link, $id, $labels = false, $force = false) {
4035
4036                 if ($force)
4037                         label_clear_cache($link, $id);
4038
4039                 if (!$labels)
4040                         $labels = get_article_labels($link, $id);
4041
4042                 $labels = db_escape_string(json_encode($labels));
4043
4044                 db_query($link, "UPDATE ttrss_user_entries SET
4045                         label_cache = '$labels' WHERE ref_id = '$id'");
4046
4047         }
4048
4049         function label_clear_cache($link, $id) {
4050
4051                 db_query($link, "UPDATE ttrss_user_entries SET
4052                         label_cache = '' WHERE ref_id = '$id'");
4053
4054         }
4055
4056         function label_remove_article($link, $id, $label, $owner_uid) {
4057
4058                 $label_id = label_find_id($link, $label, $owner_uid);
4059
4060                 if (!$label_id) return;
4061
4062                 $result = db_query($link,
4063                         "DELETE FROM ttrss_user_labels2
4064                         WHERE
4065                                 label_id = '$label_id' AND
4066                                 article_id = '$id'");
4067
4068                 label_clear_cache($link, $id);
4069         }
4070
4071         function label_add_article($link, $id, $label, $owner_uid) {
4072
4073                 $label_id = label_find_id($link, $label, $owner_uid);
4074
4075                 if (!$label_id) return;
4076
4077                 $result = db_query($link,
4078                         "SELECT
4079                                 article_id FROM ttrss_labels2, ttrss_user_labels2
4080                         WHERE
4081                                 label_id = id AND
4082                                 label_id = '$label_id' AND
4083                                 article_id = '$id' AND owner_uid = '$owner_uid'
4084                         LIMIT 1");
4085
4086                 if (db_num_rows($result) == 0) {
4087                         db_query($link, "INSERT INTO ttrss_user_labels2
4088                                 (label_id, article_id) VALUES ('$label_id', '$id')");
4089                 }
4090
4091                 label_clear_cache($link, $id);
4092
4093         }
4094
4095         function label_remove($link, $id, $owner_uid) {
4096                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4097
4098                 db_query($link, "BEGIN");
4099
4100                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
4101                         WHERE id = '$id'");
4102
4103                 $caption = db_fetch_result($result, 0, "caption");
4104
4105                 $result = db_query($link, "DELETE FROM ttrss_labels2 WHERE id = '$id'
4106                         AND owner_uid = " . $owner_uid);
4107
4108                 if (db_affected_rows($link, $result) != 0 && $caption) {
4109
4110                         /* Remove access key for the label */
4111
4112                         $ext_id = -11 - $id;
4113
4114                         db_query($link, "DELETE FROM ttrss_access_keys WHERE
4115                                 feed_id = '$ext_id' AND owner_uid = $owner_uid");
4116
4117                         /* Disable filters that reference label being removed */
4118
4119                         db_query($link, "UPDATE ttrss_filters SET
4120                                 enabled = false WHERE action_param = '$caption'
4121                                         AND action_id = 7
4122                                         AND owner_uid = " . $owner_uid);
4123
4124                         /* Remove cached data */
4125
4126                         db_query($link, "UPDATE ttrss_user_entries SET label_cache = ''
4127                                 WHERE label_cache LIKE '%$caption%' AND owner_uid = " . $owner_uid);
4128
4129                 }
4130
4131                 db_query($link, "COMMIT");
4132         }
4133
4134         function label_create($link, $caption, $fg_color = '', $bg_color = '', $owner_uid) {
4135
4136                 if (!$owner_uid) $owner_uid = $_SESSION['uid'];
4137
4138                 db_query($link, "BEGIN");
4139
4140                 $result = false;
4141
4142                 $result = db_query($link, "SELECT id FROM ttrss_labels2
4143                         WHERE caption = '$caption' AND owner_uid = $owner_uid");
4144
4145                 if (db_num_rows($result) == 0) {
4146                         $result = db_query($link,
4147                                 "INSERT INTO ttrss_labels2 (caption,owner_uid,fg_color,bg_color)
4148                                         VALUES ('$caption', '$owner_uid', '$fg_color', '$bg_color')");
4149
4150                         $result = db_affected_rows($link, $result) != 0;
4151                 }
4152
4153                 db_query($link, "COMMIT");
4154
4155                 return $result;
4156         }
4157
4158         function format_tags_string($tags, $id) {
4159
4160                 $tags_str = "";
4161                 $tags_nolinks_str = "";
4162
4163                 $num_tags = 0;
4164
4165                 $tag_limit = 6;
4166
4167                 $formatted_tags = array();
4168
4169                 foreach ($tags as $tag) {
4170                         $num_tags++;
4171                         $tag_escaped = str_replace("'", "\\'", $tag);
4172
4173                         if (mb_strlen($tag) > 30) {
4174                                 $tag = truncate_string($tag, 30);
4175                         }
4176
4177                         $tag_str = "<a href=\"javascript:viewfeed('$tag_escaped')\">$tag</a>";
4178
4179                         array_push($formatted_tags, $tag_str);
4180
4181                         $tmp_tags_str = implode(", ", $formatted_tags);
4182
4183                         if ($num_tags == $tag_limit || mb_strlen($tmp_tags_str) > 150) {
4184                                 break;
4185                         }
4186                 }
4187
4188                 $tags_str = implode(", ", $formatted_tags);
4189
4190                 if ($num_tags < count($tags)) {
4191                         $tags_str .= ", &hellip;";
4192                 }
4193
4194                 if ($num_tags == 0) {
4195                         $tags_str = __("no tags");
4196                 }
4197
4198                 return $tags_str;
4199
4200         }
4201
4202         function format_article_labels($labels, $id) {
4203
4204                 $labels_str = "";
4205
4206                 foreach ($labels as $l) {
4207                         $labels_str .= sprintf("<span class='hlLabelRef'
4208                                 style='color : %s; background-color : %s'>%s</span>",
4209                                         $l[2], $l[3], $l[1]);
4210                         }
4211
4212                 return $labels_str;
4213
4214         }
4215
4216         function format_article_note($id, $note) {
4217
4218                 $str = "<div class='articleNote'        onclick=\"editArticleNote($id)\">
4219                         <div class='noteEdit' onclick=\"editArticleNote($id)\">".
4220                         __('(edit note)')."</div>$note</div>";
4221
4222                 return $str;
4223         }
4224
4225         function toggle_collapse_cat($link, $cat_id, $mode) {
4226                 if ($cat_id > 0) {
4227                         $mode = bool_to_sql_bool($mode);
4228
4229                         db_query($link, "UPDATE ttrss_feed_categories SET
4230                                 collapsed = $mode WHERE id = '$cat_id' AND owner_uid = " .
4231                                 $_SESSION["uid"]);
4232                 } else {
4233                         $pref_name = '';
4234
4235                         switch ($cat_id) {
4236                         case -1:
4237                                 $pref_name = '_COLLAPSED_SPECIAL';
4238                                 break;
4239                         case -2:
4240                                 $pref_name = '_COLLAPSED_LABELS';
4241                                 break;
4242                         case 0:
4243                                 $pref_name = '_COLLAPSED_UNCAT';
4244                                 break;
4245                         }
4246
4247                         if ($pref_name) {
4248                                 if ($mode) {
4249                                         set_pref($link, $pref_name, 'true');
4250                                 } else {
4251                                         set_pref($link, $pref_name, 'false');
4252                                 }
4253                         }
4254                 }
4255         }
4256
4257         function remove_feed($link, $id, $owner_uid) {
4258
4259                 if ($id > 0) {
4260
4261                         /* save starred articles in Archived feed */
4262
4263                         db_query($link, "BEGIN");
4264
4265                         /* prepare feed if necessary */
4266
4267                         $result = db_query($link, "SELECT id FROM ttrss_archived_feeds
4268                                 WHERE id = '$id'");
4269
4270                         if (db_num_rows($result) == 0) {
4271                                 db_query($link, "INSERT INTO ttrss_archived_feeds
4272                                         (id, owner_uid, title, feed_url, site_url)
4273                                 SELECT id, owner_uid, title, feed_url, site_url from ttrss_feeds
4274                                 WHERE id = '$id'");
4275                         }
4276
4277                         db_query($link, "UPDATE ttrss_user_entries SET feed_id = NULL,
4278                                 orig_feed_id = '$id' WHERE feed_id = '$id' AND
4279                                         marked = true AND owner_uid = $owner_uid");
4280
4281                         /* Remove access key for the feed */
4282
4283                         db_query($link, "DELETE FROM ttrss_access_keys WHERE
4284                                 feed_id = '$id' AND owner_uid = $owner_uid");
4285
4286                         /* remove the feed */
4287
4288                         db_query($link, "DELETE FROM ttrss_feeds
4289                                         WHERE id = '$id' AND owner_uid = $owner_uid");
4290
4291                         db_query($link, "COMMIT");
4292
4293                         if (file_exists(ICONS_DIR . "/$id.ico")) {
4294                                 unlink(ICONS_DIR . "/$id.ico");
4295                         }
4296
4297                         ccache_remove($link, $id, $owner_uid);
4298
4299                 } else {
4300                         label_remove($link, -11-$id, $owner_uid);
4301                         ccache_remove($link, -11-$id, $owner_uid);
4302                 }
4303         }
4304
4305         function get_feed_category($link, $feed_cat, $parent_cat_id = false) {
4306                 if ($parent_cat_id) {
4307                         $parent_qpart = "parent_cat = '$parent_cat_id'";
4308                         $parent_insert = "'$parent_cat_id'";
4309                 } else {
4310                         $parent_qpart = "parent_cat IS NULL";
4311                         $parent_insert = "NULL";
4312                 }
4313
4314                 $result = db_query($link,
4315                         "SELECT id FROM ttrss_feed_categories
4316                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
4317
4318                 if (db_num_rows($result) == 0) {
4319                         return false;
4320                 } else {
4321                         return db_fetch_result($result, 0, "id");
4322                 }
4323         }
4324
4325         function add_feed_category($link, $feed_cat, $parent_cat_id = false) {
4326
4327                 if (!$feed_cat) return false;
4328
4329                 db_query($link, "BEGIN");
4330
4331                 if ($parent_cat_id) {
4332                         $parent_qpart = "parent_cat = '$parent_cat_id'";
4333                         $parent_insert = "'$parent_cat_id'";
4334                 } else {
4335                         $parent_qpart = "parent_cat IS NULL";
4336                         $parent_insert = "NULL";
4337                 }
4338
4339                 $result = db_query($link,
4340                         "SELECT id FROM ttrss_feed_categories
4341                         WHERE $parent_qpart AND title = '$feed_cat' AND owner_uid = ".$_SESSION["uid"]);
4342
4343                 if (db_num_rows($result) == 0) {
4344
4345                         $result = db_query($link,
4346                                 "INSERT INTO ttrss_feed_categories (owner_uid,title,parent_cat)
4347                                 VALUES ('".$_SESSION["uid"]."', '$feed_cat', $parent_insert)");
4348
4349                         db_query($link, "COMMIT");
4350
4351                         return true;
4352                 }
4353
4354                 return false;
4355         }
4356
4357         function remove_feed_category($link, $id, $owner_uid) {
4358
4359                 db_query($link, "DELETE FROM ttrss_feed_categories
4360                         WHERE id = '$id' AND owner_uid = $owner_uid");
4361
4362                 ccache_remove($link, $id, $owner_uid, true);
4363         }
4364
4365         function archive_article($link, $id, $owner_uid) {
4366                 db_query($link, "BEGIN");
4367
4368                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
4369                         WHERE ref_id = '$id' AND owner_uid = $owner_uid");
4370
4371                 if (db_num_rows($result) != 0) {
4372
4373                         /* prepare the archived table */
4374
4375                         $feed_id = (int) db_fetch_result($result, 0, "feed_id");
4376
4377                         if ($feed_id) {
4378                                 $result = db_query($link, "SELECT id FROM ttrss_archived_feeds
4379                                         WHERE id = '$feed_id'");
4380
4381                                 if (db_num_rows($result) == 0) {
4382                                         db_query($link, "INSERT INTO ttrss_archived_feeds
4383                                                 (id, owner_uid, title, feed_url, site_url)
4384                                         SELECT id, owner_uid, title, feed_url, site_url from ttrss_feeds
4385                                         WHERE id = '$feed_id'");
4386                                 }
4387
4388                                 db_query($link, "UPDATE ttrss_user_entries
4389                                         SET orig_feed_id = feed_id, feed_id = NULL
4390                                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
4391                         }
4392                 }
4393
4394                 db_query($link, "COMMIT");
4395         }
4396
4397         function getArticleFeed($link, $id) {
4398                 $result = db_query($link, "SELECT feed_id FROM ttrss_user_entries
4399                         WHERE ref_id = '$id' AND owner_uid = " . $_SESSION["uid"]);
4400
4401                 if (db_num_rows($result) != 0) {
4402                         return db_fetch_result($result, 0, "feed_id");
4403                 } else {
4404                         return 0;
4405                 }
4406         }
4407
4408         /**
4409          * Fixes incomplete URLs by prepending "http://".
4410          * Also replaces feed:// with http://, and
4411          * prepends a trailing slash if the url is a domain name only.
4412          *
4413          * @param string $url Possibly incomplete URL
4414          *
4415          * @return string Fixed URL.
4416          */
4417         function fix_url($url) {
4418                 if (strpos($url, '://') === false) {
4419                         $url = 'http://' . $url;
4420                 } else if (substr($url, 0, 5) == 'feed:') {
4421                         $url = 'http:' . substr($url, 5);
4422                 }
4423
4424                 //prepend slash if the URL has no slash in it
4425                 // "http://www.example" -> "http://www.example/"
4426                 if (strpos($url, '/', strpos($url, ':') + 3) === false) {
4427                         $url .= '/';
4428                 }
4429
4430                 if ($url != "http:///")
4431                         return $url;
4432                 else
4433                         return '';
4434         }
4435
4436         function validate_feed_url($url) {
4437                 $parts = parse_url($url);
4438
4439                 return ($parts['scheme'] == 'http' || $parts['scheme'] == 'feed' || $parts['scheme'] == 'https');
4440
4441         }
4442
4443         function get_article_enclosures($link, $id) {
4444
4445                 $query = "SELECT * FROM ttrss_enclosures
4446                         WHERE post_id = '$id' AND content_url != ''";
4447
4448                 $rv = array();
4449
4450                 $result = db_query($link, $query);
4451
4452                 if (db_num_rows($result) > 0) {
4453                         while ($line = db_fetch_assoc($result)) {
4454                                 array_push($rv, $line);
4455                         }
4456                 }
4457
4458                 return $rv;
4459         }
4460
4461         function api_get_feeds($link, $cat_id, $unread_only, $limit, $offset) {
4462
4463                         $feeds = array();
4464
4465                         /* Labels */
4466
4467                         if ($cat_id == -4 || $cat_id == -2) {
4468                                 $counters = getLabelCounters($link, true);
4469
4470                                 foreach (array_values($counters) as $cv) {
4471
4472                                         $unread = $cv["counter"];
4473
4474                                         if ($unread || !$unread_only) {
4475
4476                                                 $row = array(
4477                                                                 "id" => $cv["id"],
4478                                                                 "title" => $cv["description"],
4479                                                                 "unread" => $cv["counter"],
4480                                                                 "cat_id" => -2,
4481                                                         );
4482
4483                                                 array_push($feeds, $row);
4484                                         }
4485                                 }
4486                         }
4487
4488                         /* Virtual feeds */
4489
4490                         if ($cat_id == -4 || $cat_id == -1) {
4491                                 foreach (array(-1, -2, -3, -4, 0) as $i) {
4492                                         $unread = getFeedUnread($link, $i);
4493
4494                                         if ($unread || !$unread_only) {
4495                                                 $title = getFeedTitle($link, $i);
4496
4497                                                 $row = array(
4498                                                                 "id" => $i,
4499                                                                 "title" => $title,
4500                                                                 "unread" => $unread,
4501                                                                 "cat_id" => -1,
4502                                                         );
4503                                                 array_push($feeds, $row);
4504                                         }
4505
4506                                 }
4507                         }
4508
4509                         /* Real feeds */
4510
4511                         if ($limit) {
4512                                 $limit_qpart = "LIMIT $limit OFFSET $offset";
4513                         } else {
4514                                 $limit_qpart = "";
4515                         }
4516
4517                         if ($cat_id == -4 || $cat_id == -3) {
4518                                 $result = db_query($link, "SELECT
4519                                         id, feed_url, cat_id, title, order_id, ".
4520                                                 SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
4521                                                 FROM ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"] .
4522                                                 " ORDER BY cat_id, title " . $limit_qpart);
4523                         } else {
4524
4525                                 if ($cat_id)
4526                                         $cat_qpart = "cat_id = '$cat_id'";
4527                                 else
4528                                         $cat_qpart = "cat_id IS NULL";
4529
4530                                 $result = db_query($link, "SELECT
4531                                         id, feed_url, cat_id, title, order_id, ".
4532                                                 SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
4533                                                 FROM ttrss_feeds WHERE
4534                                                 $cat_qpart AND owner_uid = " . $_SESSION["uid"] .
4535                                                 " ORDER BY cat_id, title " . $limit_qpart);
4536                         }
4537
4538                         while ($line = db_fetch_assoc($result)) {
4539
4540                                 $unread = getFeedUnread($link, $line["id"]);
4541
4542                                 $has_icon = feed_has_icon($line['id']);
4543
4544                                 if ($unread || !$unread_only) {
4545
4546                                         $row = array(
4547                                                         "feed_url" => $line["feed_url"],
4548                                                         "title" => $line["title"],
4549                                                         "id" => (int)$line["id"],
4550                                                         "unread" => (int)$unread,
4551                                                         "has_icon" => $has_icon,
4552                                                         "cat_id" => (int)$line["cat_id"],
4553                                                         "last_updated" => strtotime($line["last_updated"]),
4554                                                         "order_id" => (int) $line["order_id"],
4555                                                 );
4556
4557                                         array_push($feeds, $row);
4558                                 }
4559                         }
4560
4561                 return $feeds;
4562         }
4563
4564         function api_get_headlines($link, $feed_id, $limit, $offset,
4565                                 $filter, $is_cat, $show_excerpt, $show_content, $view_mode, $order,
4566                                 $include_attachments, $since_id,
4567                                 $search = "", $search_mode = "", $match_on = "") {
4568
4569                         $qfh_ret = queryFeedHeadlines($link, $feed_id, $limit,
4570                                 $view_mode, $is_cat, $search, $search_mode, $match_on,
4571                                 $order, $offset, 0, false, $since_id);
4572
4573                         $result = $qfh_ret[0];
4574                         $feed_title = $qfh_ret[1];
4575
4576                         $headlines = array();
4577
4578                         while ($line = db_fetch_assoc($result)) {
4579                                 $is_updated = ($line["last_read"] == "" &&
4580                                         ($line["unread"] != "t" && $line["unread"] != "1"));
4581
4582                                 $tags = explode(",", $line["tag_cache"]);
4583                                 $labels = json_decode($line["label_cache"], true);
4584
4585                                 //if (!$tags) $tags = get_article_tags($link, $line["id"]);
4586                                 //if (!$labels) $labels = get_article_labels($link, $line["id"]);
4587
4588                                 $headline_row = array(
4589                                                 "id" => (int)$line["id"],
4590                                                 "unread" => sql_bool_to_bool($line["unread"]),
4591                                                 "marked" => sql_bool_to_bool($line["marked"]),
4592                                                 "published" => sql_bool_to_bool($line["published"]),
4593                                                 "updated" => strtotime($line["updated"]),
4594                                                 "is_updated" => $is_updated,
4595                                                 "title" => $line["title"],
4596                                                 "link" => $line["link"],
4597                                                 "feed_id" => $line["feed_id"],
4598                                                 "tags" => $tags,
4599                                         );
4600
4601                                         if ($include_attachments)
4602                                                 $headline_row['attachments'] = get_article_enclosures($link,
4603                                                         $line['id']);
4604
4605                                 if ($show_excerpt) {
4606                                         $excerpt = truncate_string(strip_tags($line["content_preview"]), 100);
4607                                         $headline_row["excerpt"] = $excerpt;
4608                                 }
4609
4610                                 if ($show_content) {
4611                                         $headline_row["content"] = $line["content_preview"];
4612                                 }
4613
4614                                 // unify label output to ease parsing
4615                                 if ($labels["no-labels"] == 1) $labels = array();
4616
4617                                 $headline_row["labels"] = $labels;
4618
4619                                 $headline_row["feed_title"] = $line["feed_title"];
4620
4621                                 array_push($headlines, $headline_row);
4622                         }
4623
4624                         return $headlines;
4625         }
4626
4627         function generate_error_feed($link, $error) {
4628                 $reply = array();
4629
4630                 $reply['headlines']['id'] = -6;
4631                 $reply['headlines']['is_cat'] = false;
4632
4633                 $reply['headlines']['toolbar'] = '';
4634                 $reply['headlines']['content'] = "<div class='whiteBox'>". $error . "</div>";
4635
4636                 $reply['headlines-info'] = array("count" => 0,
4637                         "vgroup_last_feed" => '',
4638                         "unread" => 0,
4639                         "disable_cache" => true);
4640
4641                 return $reply;
4642         }
4643
4644
4645         function generate_dashboard_feed($link) {
4646                 $reply = array();
4647
4648                 $reply['headlines']['id'] = -5;
4649                 $reply['headlines']['is_cat'] = false;
4650
4651                 $reply['headlines']['toolbar'] = '';
4652                 $reply['headlines']['content'] = "<div class='whiteBox'>".__('No feed selected.');
4653
4654                 $reply['headlines']['content'] .= "<p class=\"small\"><span class=\"insensitive\">";
4655
4656                 $result = db_query($link, "SELECT ".SUBSTRING_FOR_DATE."(MAX(last_updated), 1, 19) AS last_updated FROM ttrss_feeds
4657                         WHERE owner_uid = " . $_SESSION['uid']);
4658
4659                 $last_updated = db_fetch_result($result, 0, "last_updated");
4660                 $last_updated = make_local_datetime($link, $last_updated, false);
4661
4662                 $reply['headlines']['content'] .= sprintf(__("Feeds last updated at %s"), $last_updated);
4663
4664                 $result = db_query($link, "SELECT COUNT(id) AS num_errors
4665                         FROM ttrss_feeds WHERE last_error != '' AND owner_uid = ".$_SESSION["uid"]);
4666
4667                 $num_errors = db_fetch_result($result, 0, "num_errors");
4668
4669                 if ($num_errors > 0) {
4670                         $reply['headlines']['content'] .= "<br/>";
4671                         $reply['headlines']['content'] .= "<a class=\"insensitive\" href=\"#\" onclick=\"showFeedsWithErrors()\">".
4672                                 __('Some feeds have update errors (click for details)')."</a>";
4673                 }
4674                 $reply['headlines']['content'] .= "</span></p>";
4675
4676                 $reply['headlines-info'] = array("count" => 0,
4677                         "vgroup_last_feed" => '',
4678                         "unread" => 0,
4679                         "disable_cache" => true);
4680
4681                 return $reply;
4682         }
4683
4684         function save_email_address($link, $email) {
4685                 // FIXME: implement persistent storage of emails
4686
4687                 if (!$_SESSION['stored_emails'])
4688                         $_SESSION['stored_emails'] = array();
4689
4690                 if (!in_array($email, $_SESSION['stored_emails']))
4691                         array_push($_SESSION['stored_emails'], $email);
4692         }
4693
4694         function update_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
4695                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4696
4697                 $sql_is_cat = bool_to_sql_bool($is_cat);
4698
4699                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
4700                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
4701                         AND owner_uid = " . $owner_uid);
4702
4703                 if (db_num_rows($result) == 1) {
4704                         $key = db_escape_string(sha1(uniqid(rand(), true)));
4705
4706                         db_query($link, "UPDATE ttrss_access_keys SET access_key = '$key'
4707                                 WHERE feed_id = '$feed_id' AND is_cat = $sql_is_cat
4708                                 AND owner_uid = " . $owner_uid);
4709
4710                         return $key;
4711
4712                 } else {
4713                         return get_feed_access_key($link, $feed_id, $is_cat, $owner_uid);
4714                 }
4715         }
4716
4717         function get_feed_access_key($link, $feed_id, $is_cat, $owner_uid = false) {
4718
4719                 if (!$owner_uid) $owner_uid = $_SESSION["uid"];
4720
4721                 $sql_is_cat = bool_to_sql_bool($is_cat);
4722
4723                 $result = db_query($link, "SELECT access_key FROM ttrss_access_keys
4724                         WHERE feed_id = '$feed_id'      AND is_cat = $sql_is_cat
4725                         AND owner_uid = " . $owner_uid);
4726
4727                 if (db_num_rows($result) == 1) {
4728                         return db_fetch_result($result, 0, "access_key");
4729                 } else {
4730                         $key = db_escape_string(sha1(uniqid(rand(), true)));
4731
4732                         $result = db_query($link, "INSERT INTO ttrss_access_keys
4733                                 (access_key, feed_id, is_cat, owner_uid)
4734                                 VALUES ('$key', '$feed_id', $sql_is_cat, '$owner_uid')");
4735
4736                         return $key;
4737                 }
4738                 return false;
4739         }
4740
4741         /**
4742          * Extracts RSS/Atom feed URLs from the given HTML URL.
4743          *
4744          * @param string $url HTML page URL
4745          *
4746          * @return array Array of feeds. Key is the full URL, value the title
4747          */
4748         function get_feeds_from_html($url, $login = false, $pass = false)
4749         {
4750                 $url     = fix_url($url);
4751                 $baseUrl = substr($url, 0, strrpos($url, '/') + 1);
4752
4753                 libxml_use_internal_errors(true);
4754
4755                 $content = @fetch_file_contents($url, false, $login, $pass);
4756
4757                 $doc = new DOMDocument();
4758                 $doc->loadHTML($content);
4759                 $xpath = new DOMXPath($doc);
4760                 $entries = $xpath->query('/html/head/link[@rel="alternate"]');
4761                 $feedUrls = array();
4762                 foreach ($entries as $entry) {
4763                         if ($entry->hasAttribute('href')) {
4764                                 $title = $entry->getAttribute('title');
4765                                 if ($title == '') {
4766                                         $title = $entry->getAttribute('type');
4767                                 }
4768                                 $feedUrl = rewrite_relative_url(
4769                                         $baseUrl, $entry->getAttribute('href')
4770                                 );
4771                                 $feedUrls[$feedUrl] = $title;
4772                         }
4773                 }
4774                 return $feedUrls;
4775         }
4776
4777         /**
4778          * Checks if the content behind the given URL is a HTML file
4779          *
4780          * @param string $url URL to check
4781          *
4782          * @return boolean True if the URL contains HTML content
4783          */
4784         function url_is_html($url, $login = false, $pass = false) {
4785                 $content = substr(fetch_file_contents($url, false, $login, $pass), 0, 1000);
4786
4787                 if (stripos($content, '<html>') === false
4788                         && stripos($content, '<html ') === false
4789                 ) {
4790                         return false;
4791                 }
4792
4793                 return true;
4794         }
4795
4796         function print_label_select($link, $name, $value, $attributes = "") {
4797
4798                 $result = db_query($link, "SELECT caption FROM ttrss_labels2
4799                         WHERE owner_uid = '".$_SESSION["uid"]."' ORDER BY caption");
4800
4801                 print "<select default=\"$value\" name=\"" . htmlspecialchars($name) .
4802                         "\" $attributes onchange=\"labelSelectOnChange(this)\" >";
4803
4804                 while ($line = db_fetch_assoc($result)) {
4805
4806                         $issel = ($line["caption"] == $value) ? "selected=\"1\"" : "";
4807
4808                         print "<option value=\"".htmlspecialchars($line["caption"])."\"
4809                                 $issel>" . htmlspecialchars($line["caption"]) . "</option>";
4810
4811                 }
4812
4813 #               print "<option value=\"ADD_LABEL\">" .__("Add label...") . "</option>";
4814
4815                 print "</select>";
4816
4817
4818         }
4819
4820         function format_article_enclosures($link, $id, $always_display_enclosures,
4821                                         $article_content) {
4822
4823                 $result = get_article_enclosures($link, $id);
4824                 $rv = '';
4825
4826                 if (count($result) > 0) {
4827
4828                         $entries_html = array();
4829                         $entries = array();
4830
4831                         foreach ($result as $line) {
4832
4833                                 $url = $line["content_url"];
4834                                 $ctype = $line["content_type"];
4835
4836                                 if (!$ctype) $ctype = __("unknown type");
4837
4838                                 $filename = substr($url, strrpos($url, "/")+1);
4839
4840 #                               $player = format_inline_player($link, $url, $ctype);
4841
4842 #                               $entry .= " <a target=\"_blank\" href=\"" . htmlspecialchars($url) . "\">" .
4843 #                                       $filename . " (" . $ctype . ")" . "</a>";
4844
4845                                 $entry = "<div onclick=\"window.open('".htmlspecialchars($url)."')\"
4846                                         dojoType=\"dijit.MenuItem\">$filename ($ctype)</div>";
4847
4848                                 array_push($entries_html, $entry);
4849
4850                                 $entry = array();
4851
4852                                 $entry["type"] = $ctype;
4853                                 $entry["filename"] = $filename;
4854                                 $entry["url"] = $url;
4855
4856                                 array_push($entries, $entry);
4857                         }
4858
4859                         if (!get_pref($link, "STRIP_IMAGES")) {
4860                                 if ($always_display_enclosures ||
4861                                                         !preg_match("/<img/i", $article_content)) {
4862
4863                                         foreach ($entries as $entry) {
4864
4865                                                 if (preg_match("/image/", $entry["type"]) ||
4866                                                                 preg_match("/\.(jpg|png|gif|bmp)/i", $entry["filename"])) {
4867
4868                                                                 $rv .= "<p><img
4869                                                                 alt=\"".htmlspecialchars($entry["filename"])."\"
4870                                                                 src=\"" .htmlspecialchars($entry["url"]) . "\"/></p>";
4871
4872                                                 }
4873                                         }
4874                                 }
4875                         }
4876
4877                         $rv .= "<div dojoType=\"dijit.form.DropDownButton\">".
4878                                 "<span>" . __('Attachments')."</span>";
4879                         $rv .= "<div dojoType=\"dijit.Menu\" style=\"display: none;\">";
4880
4881                         foreach ($entries_html as $entry) { $rv .= $entry; };
4882
4883                         $rv .= "</div></div>";
4884                 }
4885
4886                 return $rv;
4887         }
4888
4889         function getLastArticleId($link) {
4890                 $result = db_query($link, "SELECT MAX(ref_id) AS id FROM ttrss_user_entries
4891                         WHERE owner_uid = " . $_SESSION["uid"]);
4892
4893                 if (db_num_rows($result) == 1) {
4894                         return db_fetch_result($result, 0, "id");
4895                 } else {
4896                         return -1;
4897                 }
4898         }
4899
4900         function build_url($parts) {
4901                 return $parts['scheme'] . "://" . $parts['host'] . $parts['path'];
4902         }
4903
4904         /**
4905          * Converts a (possibly) relative URL to a absolute one.
4906          *
4907          * @param string $url     Base URL (i.e. from where the document is)
4908          * @param string $rel_url Possibly relative URL in the document
4909          *
4910          * @return string Absolute URL
4911          */
4912         function rewrite_relative_url($url, $rel_url) {
4913                 if (strpos($rel_url, "magnet:") === 0) {
4914                         return $rel_url;
4915                 } else if (strpos($rel_url, "://") !== false) {
4916                         return $rel_url;
4917                 } else if (strpos($rel_url, "//") === 0) {
4918                         # protocol-relative URL (rare but they exist)
4919                         return $rel_url;
4920                 } else if (strpos($rel_url, "/") === 0)
4921                 {
4922                         $parts = parse_url($url);
4923                         $parts['path'] = $rel_url;
4924
4925                         return build_url($parts);
4926
4927                 } else {
4928                         $parts = parse_url($url);
4929                         if (!isset($parts['path'])) {
4930                                 $parts['path'] = '/';
4931                         }
4932                         $dir = $parts['path'];
4933                         if (substr($dir, -1) !== '/') {
4934                                 $dir = dirname($parts['path']);
4935                                 $dir !== '/' && $dir .= '/';
4936                         }
4937                         $parts['path'] = $dir . $rel_url;
4938
4939                         return build_url($parts);
4940                 }
4941         }
4942
4943         function sphinx_search($query, $offset = 0, $limit = 30) {
4944                 require_once 'lib/sphinxapi.php';
4945
4946                 $sphinxClient = new SphinxClient();
4947
4948                 $sphinxClient->SetServer('localhost', 9312);
4949                 $sphinxClient->SetConnectTimeout(1);
4950
4951                 $sphinxClient->SetFieldWeights(array('title' => 70, 'content' => 30,
4952                         'feed_title' => 20));
4953
4954                 $sphinxClient->SetMatchMode(SPH_MATCH_EXTENDED2);
4955                 $sphinxClient->SetRankingMode(SPH_RANK_PROXIMITY_BM25);
4956                 $sphinxClient->SetLimits($offset, $limit, 1000);
4957                 $sphinxClient->SetArrayResult(false);
4958                 $sphinxClient->SetFilter('owner_uid', array($_SESSION['uid']));
4959
4960                 $result = $sphinxClient->Query($query, SPHINX_INDEX);
4961
4962                 $ids = array();
4963
4964                 if (is_array($result['matches'])) {
4965                         foreach (array_keys($result['matches']) as $int_id) {
4966                                 $ref_id = $result['matches'][$int_id]['attrs']['ref_id'];
4967                                 array_push($ids, $ref_id);
4968                         }
4969                 }
4970
4971                 return $ids;
4972         }
4973
4974         function cleanup_tags($link, $days = 14, $limit = 1000) {
4975
4976                 if (DB_TYPE == "pgsql") {
4977                         $interval_query = "date_updated < NOW() - INTERVAL '$days days'";
4978                 } else if (DB_TYPE == "mysql") {
4979                         $interval_query = "date_updated < DATE_SUB(NOW(), INTERVAL $days DAY)";
4980                 }
4981
4982                 $tags_deleted = 0;
4983
4984                 while ($limit > 0) {
4985                         $limit_part = 500;
4986
4987                         $query = "SELECT ttrss_tags.id AS id
4988                                 FROM ttrss_tags, ttrss_user_entries, ttrss_entries
4989                                 WHERE post_int_id = int_id AND $interval_query AND
4990                                 ref_id = ttrss_entries.id AND tag_cache != '' LIMIT $limit_part";
4991
4992                         $result = db_query($link, $query);
4993
4994                         $ids = array();
4995
4996                         while ($line = db_fetch_assoc($result)) {
4997                                 array_push($ids, $line['id']);
4998                         }
4999
5000                         if (count($ids) > 0) {
5001                                 $ids = join(",", $ids);
5002                                 print ".";
5003
5004                                 $tmp_result = db_query($link, "DELETE FROM ttrss_tags WHERE id IN ($ids)");
5005                                 $tags_deleted += db_affected_rows($link, $tmp_result);
5006                         } else {
5007                                 break;
5008                         }
5009
5010                         $limit -= $limit_part;
5011                 }
5012
5013                 print "\n";
5014
5015                 return $tags_deleted;
5016         }
5017
5018         function print_user_stylesheet($link) {
5019                 $value = get_pref($link, 'USER_STYLESHEET');
5020
5021                 if ($value) {
5022                         print "<style type=\"text/css\">";
5023                         print str_replace("<br/>", "\n", $value);
5024                         print "</style>";
5025                 }
5026
5027         }
5028
5029 /*      function rewrite_urls($line) {
5030                 global $url_regex;
5031
5032                 $urls = null;
5033
5034                 $result = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
5035                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $line);
5036
5037                 return $result;
5038         } */
5039
5040         function rewrite_urls($html) {
5041                 libxml_use_internal_errors(true);
5042
5043                 $charset_hack = '<head>
5044                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
5045                 </head>';
5046
5047                 $doc = new DOMDocument();
5048                 $doc->loadHTML($charset_hack . $html);
5049                 $xpath = new DOMXPath($doc);
5050
5051                 $entries = $xpath->query('//*/text()');
5052
5053                 foreach ($entries as $entry) {
5054                         if (strstr($entry->wholeText, "://") !== false) {
5055                                 $text = preg_replace("/((?<!=.)((http|https|ftp)+):\/\/[^ ,!]+)/i",
5056                                         "<a target=\"_blank\" href=\"\\1\">\\1</a>", $entry->wholeText);
5057
5058                                 if ($text != $entry->wholeText) {
5059                                         $cdoc = new DOMDocument();
5060                                         $cdoc->loadHTML($charset_hack . $text);
5061
5062
5063                                         foreach ($cdoc->childNodes as $cnode) {
5064                                                 $cnode = $doc->importNode($cnode, true);
5065
5066                                                 if ($cnode) {
5067                                                         $entry->parentNode->insertBefore($cnode);
5068                                                 }
5069                                         }
5070
5071                                         $entry->parentNode->removeChild($entry);
5072
5073                                 }
5074                         }
5075                 }
5076
5077                 $node = $doc->getElementsByTagName('body')->item(0);
5078
5079                 // http://tt-rss.org/forum/viewtopic.php?f=1&t=970
5080                 if ($node)
5081                         return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
5082                 else
5083                         return $html;
5084         }
5085
5086         function filter_to_sql($filter) {
5087                 $query = "";
5088
5089                 $regexp_valid = preg_match('/' . $filter['reg_exp'] . '/',
5090                         $filter['reg_exp']) !== FALSE;
5091
5092                 if ($regexp_valid) {
5093
5094                         if (DB_TYPE == "pgsql")
5095                                 $reg_qpart = "~";
5096                         else
5097                                 $reg_qpart = "REGEXP";
5098
5099                         switch ($filter["type"]) {
5100                                 case "title":
5101                                         $query = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
5102                                                 $filter['reg_exp'] . "')";
5103                                         break;
5104                                 case "content":
5105                                         $query = "LOWER(ttrss_entries.content) $reg_qpart LOWER('".
5106                                                 $filter['reg_exp'] . "')";
5107                                         break;
5108                                 case "both":
5109                                         $query = "LOWER(ttrss_entries.title) $reg_qpart LOWER('".
5110                                                 $filter['reg_exp'] . "') OR LOWER(" .
5111                                                 "ttrss_entries.content) $reg_qpart LOWER('" . $filter['reg_exp'] . "')";
5112                                         break;
5113                                 case "tag":
5114                                         $query = "LOWER(ttrss_user_entries.tag_cache) $reg_qpart LOWER('".
5115                                                 $filter['reg_exp'] . "')";
5116                                         break;
5117                                 case "link":
5118                                         $query = "LOWER(ttrss_entries.link) $reg_qpart LOWER('".
5119                                                 $filter['reg_exp'] . "')";
5120                                         break;
5121                                 case "date":
5122
5123                                         if ($filter["filter_param"] == "before")
5124                                                 $cmp_qpart = "<";
5125                                         else
5126                                                 $cmp_qpart = ">=";
5127
5128                                         $timestamp = date("Y-m-d H:N:s", strtotime($filter["reg_exp"]));
5129                                         $query = "ttrss_entries.date_entered $cmp_qpart '$timestamp'";
5130                                         break;
5131                                 case "author":
5132                                         $query = "LOWER(ttrss_entries.author) $reg_qpart LOWER('".
5133                                                 $filter['reg_exp'] . "')";
5134                                         break;
5135                         }
5136
5137                         if ($filter["inverse"])
5138                                 $query = "NOT ($query)";
5139
5140                         if ($query) {
5141                                 if (DB_TYPE == "pgsql") {
5142                                         $query = " ($query) AND ttrss_entries.date_entered > NOW() - INTERVAL '14 days'";
5143                                 } else {
5144                                         $query = " ($query) AND ttrss_entries.date_entered > DATE_SUB(NOW(), INTERVAL 14 DAY)";
5145                                 }
5146                                 $query .= " AND ";
5147                         }
5148
5149                         return $query;
5150                 } else {
5151                         return false;
5152                 }
5153         }
5154
5155         // Status codes:
5156         // -1  - never connected
5157         // 0   - no data received
5158         // 1   - data received successfully
5159         // 2   - did not receive valid data
5160         // >10 - server error, code + 10 (e.g. 16 means server error 6)
5161
5162         function get_linked_feeds($link, $instance_id = false) {
5163                 if ($instance_id)
5164                         $instance_qpart = "id = '$instance_id' AND ";
5165                 else
5166                         $instance_qpart = "";
5167
5168                 if (DB_TYPE == "pgsql") {
5169                         $date_qpart = "last_connected < NOW() - INTERVAL '6 hours'";
5170                 } else {
5171                         $date_qpart = "last_connected < DATE_SUB(NOW(), INTERVAL 6 HOUR)";
5172                 }
5173
5174                 $result = db_query($link, "SELECT id, access_key, access_url FROM ttrss_linked_instances
5175                         WHERE $instance_qpart $date_qpart ORDER BY last_connected");
5176
5177                 while ($line = db_fetch_assoc($result)) {
5178                         $id = $line['id'];
5179
5180                         _debug("Updating: " . $line['access_url'] . " ($id)");
5181
5182                         $fetch_url = $line['access_url'] . '/public.php?op=fbexport';
5183                         $post_query = 'key=' . $line['access_key'];
5184
5185                         $feeds = fetch_file_contents($fetch_url, false, false, false, $post_query);
5186
5187                         // try doing it the old way
5188                         if (!$feeds) {
5189                                 $fetch_url = $line['access_url'] . '/backend.php?op=fbexport';
5190                                 $feeds = fetch_file_contents($fetch_url, false, false, false, $post_query);
5191                         }
5192
5193                         if ($feeds) {
5194                                 $feeds = json_decode($feeds, true);
5195
5196                                 if ($feeds) {
5197                                         if ($feeds['error']) {
5198                                                 $status = $feeds['error']['code'] + 10;
5199                                         } else {
5200                                                 $status = 1;
5201
5202                                                 if (count($feeds['feeds']) > 0) {
5203
5204                                                         db_query($link, "DELETE FROM ttrss_linked_feeds
5205                                                                 WHERE instance_id = '$id'");
5206
5207                                                         foreach ($feeds['feeds'] as $feed) {
5208                                                                 $feed_url = db_escape_string($feed['feed_url']);
5209                                                                 $title = db_escape_string($feed['title']);
5210                                                                 $subscribers = db_escape_string($feed['subscribers']);
5211                                                                 $site_url = db_escape_string($feed['site_url']);
5212
5213                                                                 db_query($link, "INSERT INTO ttrss_linked_feeds
5214                                                                         (feed_url, site_url, title, subscribers, instance_id, created, updated)
5215                                                                 VALUES
5216                                                                         ('$feed_url', '$site_url', '$title', '$subscribers', '$id', NOW(), NOW())");
5217                                                         }
5218                                                 } else {
5219                                                         // received 0 feeds, this might indicate that
5220                                                         // the instance on the other hand is rebuilding feedbrowser cache
5221                                                         // we will try again later
5222
5223                                                         // TODO: maybe perform expiration based on updated here?
5224                                                 }
5225
5226                                                 _debug("Processed " . count($feeds['feeds']) . " feeds.");
5227                                         }
5228                                 } else {
5229                                         $status = 2;
5230                                 }
5231
5232                         } else {
5233                                 $status = 0;
5234                         }
5235
5236                         _debug("Status: $status");
5237
5238                         db_query($link, "UPDATE ttrss_linked_instances SET
5239                                 last_status_out = '$status', last_connected = NOW() WHERE id = '$id'");
5240
5241                 }
5242         }
5243
5244         function make_feed_browser($link, $search, $limit, $mode = 1) {
5245
5246                 $owner_uid = $_SESSION["uid"];
5247                 $rv = '';
5248
5249                 if ($search) {
5250                         $search_qpart = "AND (UPPER(feed_url) LIKE UPPER('%$search%') OR
5251                                                 UPPER(title) LIKE UPPER('%$search%'))";
5252                 } else {
5253                         $search_qpart = "";
5254                 }
5255
5256                 if ($mode == 1) {
5257                         /* $result = db_query($link, "SELECT feed_url, subscribers FROM
5258                          ttrss_feedbrowser_cache WHERE (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
5259                         WHERE tf.feed_url = ttrss_feedbrowser_cache.feed_url
5260                         AND owner_uid = '$owner_uid') $search_qpart
5261                         ORDER BY subscribers DESC LIMIT $limit"); */
5262
5263                         $result = db_query($link, "SELECT feed_url, site_url, title, SUM(subscribers) AS subscribers FROM
5264                                                 (SELECT feed_url, site_url, title, subscribers FROM ttrss_feedbrowser_cache UNION ALL
5265                                                         SELECT feed_url, site_url, title, subscribers FROM ttrss_linked_feeds) AS qqq
5266                                                 WHERE
5267                                                         (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
5268                                                                 WHERE tf.feed_url = qqq.feed_url
5269                                                                         AND owner_uid = '$owner_uid') $search_qpart
5270                                                 GROUP BY feed_url, site_url, title ORDER BY subscribers DESC LIMIT $limit");
5271
5272                 } else if ($mode == 2) {
5273                         $result = db_query($link, "SELECT *,
5274                                                 (SELECT COUNT(*) FROM ttrss_user_entries WHERE
5275                                                         orig_feed_id = ttrss_archived_feeds.id) AS articles_archived
5276                                                 FROM
5277                                                         ttrss_archived_feeds
5278                                                 WHERE
5279                                                 (SELECT COUNT(*) FROM ttrss_feeds
5280                                                         WHERE ttrss_feeds.feed_url = ttrss_archived_feeds.feed_url AND
5281                                                                 owner_uid = '$owner_uid') = 0   AND
5282                                                 owner_uid = '$owner_uid' $search_qpart
5283                                                 ORDER BY id DESC LIMIT $limit");
5284                 }
5285
5286                 $feedctr = 0;
5287
5288                 while ($line = db_fetch_assoc($result)) {
5289
5290                         if ($mode == 1) {
5291
5292                                 $feed_url = htmlspecialchars($line["feed_url"]);
5293                                 $site_url = htmlspecialchars($line["site_url"]);
5294                                 $subscribers = $line["subscribers"];
5295
5296                                 $check_box = "<input onclick='toggleSelectListRow2(this)'
5297                                                         dojoType=\"dijit.form.CheckBox\"
5298                                                         type=\"checkbox\" \">";
5299
5300                                 $class = ($feedctr % 2) ? "even" : "odd";
5301
5302                                 $site_url = "<a target=\"_blank\"
5303                                                         href=\"$site_url\">
5304                                                         <span class=\"fb_feedTitle\">".
5305                                 htmlspecialchars($line["title"])."</span></a>";
5306
5307                                 $feed_url = "<a target=\"_blank\" class=\"fb_feedUrl\"
5308                                                         href=\"$feed_url\"><img src='images/feed-icon-12x12.png'
5309                                                         style='vertical-align : middle'></a>";
5310
5311                                 $rv .= "<li>$check_box $feed_url $site_url".
5312                                                         "&nbsp;<span class='subscribers'>($subscribers)</span></li>";
5313
5314                         } else if ($mode == 2) {
5315                                 $feed_url = htmlspecialchars($line["feed_url"]);
5316                                 $site_url = htmlspecialchars($line["site_url"]);
5317                                 $title = htmlspecialchars($line["title"]);
5318
5319                                 $check_box = "<input onclick='toggleSelectListRow2(this)' dojoType=\"dijit.form.CheckBox\"
5320                                                         type=\"checkbox\">";
5321
5322                                 $class = ($feedctr % 2) ? "even" : "odd";
5323
5324                                 if ($line['articles_archived'] > 0) {
5325                                         $archived = sprintf(__("%d archived articles"), $line['articles_archived']);
5326                                         $archived = "&nbsp;<span class='subscribers'>($archived)</span>";
5327                                 } else {
5328                                         $archived = '';
5329                                 }
5330
5331                                 $site_url = "<a target=\"_blank\"
5332                                                         href=\"$site_url\">
5333                                                         <span class=\"fb_feedTitle\">".
5334                                 htmlspecialchars($line["title"])."</span></a>";
5335
5336                                 $feed_url = "<a target=\"_blank\" class=\"fb_feedUrl\"
5337                                                         href=\"$feed_url\"><img src='images/feed-icon-12x12.png'
5338                                                         style='vertical-align : middle'></a>";
5339
5340
5341                                 $rv .= "<li id=\"FBROW-".$line["id"]."\">".
5342                                                         "$check_box $feed_url $site_url $archived</li>";
5343                         }
5344
5345                         ++$feedctr;
5346                 }
5347
5348                 if ($feedctr == 0) {
5349                         $rv .= "<li style=\"text-align : center\"><p>".__('No feeds found.')."</p></li>";
5350                 }
5351
5352                 return $rv;
5353         }
5354
5355         if (!function_exists('gzdecode')) {
5356                 function gzdecode($string) { // no support for 2nd argument
5357                         return file_get_contents('compress.zlib://data:who/cares;base64,'.
5358                                 base64_encode($string));
5359                 }
5360         }
5361
5362         function perform_data_import($link, $filename, $owner_uid) {
5363
5364                 $num_imported = 0;
5365                 $num_processed = 0;
5366                 $num_feeds_created = 0;
5367
5368                 $doc = @DOMDocument::load($filename);
5369
5370                 if (!$doc) {
5371                         $contents = file_get_contents($filename);
5372
5373                         if ($contents) {
5374                                 $data = @gzuncompress($contents);
5375                         }
5376
5377                         if (!$data) {
5378                                 $data = @gzdecode($contents);
5379                         }
5380
5381                         if ($data)
5382                                 $doc = DOMDocument::loadXML($data);
5383                 }
5384
5385                 if ($doc) {
5386
5387                         $xpath = new DOMXpath($doc);
5388
5389                         $container = $doc->firstChild;
5390
5391                         if ($container && $container->hasAttribute('schema-version')) {
5392                                 $schema_version = $container->getAttribute('schema-version');
5393
5394                                 if ($schema_version != SCHEMA_VERSION) {
5395                                         print "<p>" .__("Could not import: incorrect schema version.") . "</p>";
5396                                         return;
5397                                 }
5398
5399                         } else {
5400                                 print "<p>" . __("Could not import: unrecognized document format.") . "</p>";
5401                                 return;
5402                         }
5403
5404                         $articles = $xpath->query("//article");
5405
5406                         foreach ($articles as $article_node) {
5407                                 if ($article_node->childNodes) {
5408
5409                                         $ref_id = 0;
5410
5411                                         $article = array();
5412
5413                                         foreach ($article_node->childNodes as $child) {
5414                                                 if ($child->nodeName != 'label_cache')
5415                                                         $article[$child->nodeName] = db_escape_string($child->nodeValue);
5416                                                 else
5417                                                         $article[$child->nodeName] = $child->nodeValue;
5418                                         }
5419
5420                                         //print_r($article);
5421
5422                                         if ($article['guid']) {
5423
5424                                                 ++$num_processed;
5425
5426                                                 //db_query($link, "BEGIN");
5427
5428                                                 //print 'GUID:' . $article['guid'] . "\n";
5429
5430                                                 $result = db_query($link, "SELECT id FROM ttrss_entries
5431                                                         WHERE guid = '".$article['guid']."'");
5432
5433                                                 if (db_num_rows($result) == 0) {
5434
5435                                                         $result = db_query($link,
5436                                                                 "INSERT INTO ttrss_entries
5437                                                                         (title,
5438                                                                         guid,
5439                                                                         link,
5440                                                                         updated,
5441                                                                         content,
5442                                                                         content_hash,
5443                                                                         no_orig_date,
5444                                                                         date_updated,
5445                                                                         date_entered,
5446                                                                         comments,
5447                                                                         num_comments,
5448                                                                         author)
5449                                                                 VALUES
5450                                                                         ('".$article['title']."',
5451                                                                         '".$article['guid']."',
5452                                                                         '".$article['link']."',
5453                                                                         '".$article['updated']."',
5454                                                                         '".$article['content']."',
5455                                                                         '".sha1($article['content'])."',
5456                                                                         false,
5457                                                                         NOW(),
5458                                                                         NOW(),
5459                                                                         '',
5460                                                                         '0',
5461                                                                         '')");
5462
5463                                                         $result = db_query($link, "SELECT id FROM ttrss_entries
5464                                                                 WHERE guid = '".$article['guid']."'");
5465
5466                                                         if (db_num_rows($result) != 0) {
5467                                                                 $ref_id = db_fetch_result($result, 0, "id");
5468                                                         }
5469
5470                                                 } else {
5471                                                         $ref_id = db_fetch_result($result, 0, "id");
5472                                                 }
5473
5474                                                 //print "Got ref ID: $ref_id\n";
5475
5476                                                 if ($ref_id) {
5477
5478                                                         $feed_url = $article['feed_url'];
5479                                                         $feed_title = $article['feed_title'];
5480
5481                                                         $feed = 'NULL';
5482
5483                                                         if ($feed_url && $feed_title) {
5484                                                                 $result = db_query($link, "SELECT id FROM ttrss_feeds
5485                                                                         WHERE feed_url = '$feed_url' AND owner_uid = '$owner_uid'");
5486
5487                                                                 if (db_num_rows($result) != 0) {
5488                                                                         $feed = db_fetch_result($result, 0, "id");
5489                                                                 } else {
5490                                                                         // try autocreating feed in Uncategorized...
5491
5492                                                                         $result = db_query($link, "INSERT INTO ttrss_feeds (owner_uid,
5493                                                                                 feed_url, title) VALUES ($owner_uid, '$feed_url', '$feed_title')");
5494
5495                                                                         $result = db_query($link, "SELECT id FROM ttrss_feeds
5496                                                                                 WHERE feed_url = '$feed_url' AND owner_uid = '$owner_uid'");
5497
5498                                                                         if (db_num_rows($result) != 0) {
5499                                                                                 ++$num_feeds_created;
5500
5501                                                                                 $feed = db_fetch_result($result, 0, "id");
5502                                                                         }
5503                                                                 }
5504                                                         }
5505
5506                                                         if ($feed != 'NULL')
5507                                                                 $feed_qpart = "feed_id = $feed";
5508                                                         else
5509                                                                 $feed_qpart = "feed_id IS NULL";
5510
5511                                                         //print "$ref_id / $feed / " . $article['title'] . "\n";
5512
5513                                                         $result = db_query($link, "SELECT int_id FROM ttrss_user_entries
5514                                                                 WHERE ref_id = '$ref_id' AND owner_uid = '$owner_uid' AND $feed_qpart");
5515
5516                                                         if (db_num_rows($result) == 0) {
5517
5518                                                                 $marked = bool_to_sql_bool(sql_bool_to_bool($article['marked']));
5519                                                                 $published = bool_to_sql_bool(sql_bool_to_bool($article['published']));
5520                                                                 $score = (int) $article['score'];
5521
5522                                                                 $tag_cache = $article['tag_cache'];
5523                                                                 $label_cache = db_escape_string($article['label_cache']);
5524                                                                 $note = $article['note'];
5525
5526                                                                 //print "Importing " . $article['title'] . "<br/>";
5527
5528                                                                 ++$num_imported;
5529
5530                                                                 $result = db_query($link,
5531                                                                         "INSERT INTO ttrss_user_entries
5532                                                                         (ref_id, owner_uid, feed_id, unread, last_read, marked,
5533                                                                                 published, score, tag_cache, label_cache, uuid, note)
5534                                                                         VALUES ($ref_id, $owner_uid, $feed, false,
5535                                                                                 NULL, $marked, $published, $score, '$tag_cache',
5536                                                                                         '$label_cache', '', '$note')");
5537
5538                                                                 $label_cache = json_decode($label_cache, true);
5539
5540                                                                 if (is_array($label_cache) && $label_cache["no-labels"] != 1) {
5541                                                                         foreach ($label_cache as $label) {
5542
5543                                                                                 label_create($link, $label[1],
5544                                                                                         $label[2], $label[3], $owner_uid);
5545
5546                                                                                 label_add_article($link, $ref_id, $label[1], $owner_uid);
5547
5548                                                                         }
5549                                                                 }
5550
5551                                                                 //db_query($link, "COMMIT");
5552                                                         }
5553                                                 }
5554                                         }
5555                                 }
5556                         }
5557
5558                         print "<p>" .
5559                                 T_sprintf("Finished: %d articles processed, %d imported, %d feeds created.",
5560                                         $num_processed, $num_imported, $num_feeds_created) .
5561                                         "</p>";
5562
5563                 } else {
5564
5565                         print "<p>" . __("Could not load XML document.") . "</p>";
5566
5567                 }
5568         }
5569
5570         function get_random_bytes($length) {
5571                 if (function_exists('openssl_random_pseudo_bytes')) {
5572                         return openssl_random_pseudo_bytes($length);
5573                 } else {
5574                         $output = "";
5575
5576                         for ($i = 0; $i < $length; $i++)
5577                                 $output .= chr(mt_rand(0, 255));
5578
5579                         return $output;
5580                 }
5581         }
5582
5583         function read_stdin() {
5584                 $fp = fopen("php://stdin", "r");
5585
5586                 if ($fp) {
5587                         $line = trim(fgets($fp));
5588                         fclose($fp);
5589                         return $line;
5590                 }
5591
5592                 return null;
5593         }
5594 ?>