include/functions.php

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