backend.php

   1 <?php
   2         /* remove ill effects of magic quotes */
   3
   4         if (get_magic_quotes_gpc()) {
   5                 function stripslashes_deep($value) {
   6                         $value = is_array($value) ?
   7                                 array_map('stripslashes_deep', $value) : stripslashes($value);
   8                                 return $value;
   9                 }
  10
  11                 $_POST = array_map('stripslashes_deep', $_POST);
  12                 $_GET = array_map('stripslashes_deep', $_GET);
  13                 $_COOKIE = array_map('stripslashes_deep', $_COOKIE);
  14                 $_REQUEST = array_map('stripslashes_deep', $_REQUEST);
  15         }
  16
  17         $op = $_REQUEST["op"];
  18
  19         require_once "functions.php";
  20         if ($op != "share") require_once "sessions.php";
  21         require_once "modules/backend-rpc.php";
  22         require_once "sanity_check.php";
  23         require_once "config.php";
  24         require_once "db.php";
  25         require_once "db-prefs.php";
  26
  27         no_cache_incantation();
  28
  29         startup_gettext();
  30
  31         $script_started = getmicrotime();
  32
  33         $link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME);
  34
  35         if (!$link) {
  36                 if (DB_TYPE == "mysql") {
  37                         print mysql_error();
  38                 }
  39                 // PG seems to display its own errors just fine by default.
  40                 return;
  41         }
  42
  43         init_connection($link);
  44
  45         $subop = $_REQUEST["subop"];
  46         $mode = $_REQUEST["mode"];
  47
  48         if ((!$op || $op == "rss" || $op == "dlg") && !$_REQUEST["noxml"]) {
  49                         header("Content-Type: application/xml; charset=utf-8");
  50         } else {
  51                         header("Content-Type: text/plain; charset=utf-8");
  52         }
  53
  54         if (ENABLE_GZIP_OUTPUT) {
  55                 ob_start("ob_gzhandler");
  56         }
  57
  58         if (SINGLE_USER_MODE) {
  59                 authenticate_user($link, "admin", null);
  60         }
  61
  62         if (!($_SESSION["uid"] && validate_session($link)) && $op != "globalUpdateFeeds" &&
  63                         $op != "rss" && $op != "getUnread" && $op != "getProfiles" && $op != "share" &&
  64                         $op != "fbexport" && $op != "logout" && $op != "pubsub") {
  65
  66                 if ($op == 'pref-feeds' && $_REQUEST['subop'] == 'add') {
  67                         header("Content-Type: text/html");
  68                         login_sequence($link);
  69                         render_login_form($link);
  70                 } else {
  71                         header("Content-Type: text/plain");
  72                         print json_encode(array("error" => array("code" => 6)));
  73                 }
  74                 return;
  75         }
  76
  77         $purge_intervals = array(
  78                 0  => __("Use default"),
  79                 -1 => __("Never purge"),
  80                 5  => __("1 week old"),
  81                 14 => __("2 weeks old"),
  82                 31 => __("1 month old"),
  83                 60 => __("2 months old"),
  84                 90 => __("3 months old"));
  85
  86         $update_intervals = array(
  87                 0   => __("Default interval"),
  88                 -1  => __("Disable updates"),
  89                 15  => __("Each 15 minutes"),
  90                 30  => __("Each 30 minutes"),
  91                 60  => __("Hourly"),
  92                 240 => __("Each 4 hours"),
  93                 720 => __("Each 12 hours"),
  94                 1440 => __("Daily"),
  95                 10080 => __("Weekly"));
  96
  97         $update_intervals_nodefault = array(
  98                 -1  => __("Disable updates"),
  99                 15  => __("Each 15 minutes"),
 100                 30  => __("Each 30 minutes"),
 101                 60  => __("Hourly"),
 102                 240 => __("Each 4 hours"),
 103                 720 => __("Each 12 hours"),
 104                 1440 => __("Daily"),
 105                 10080 => __("Weekly"));
 106
 107         $update_methods = array(
 108                 0   => __("Default"),
 109                 1   => __("Magpie"),
 110                 2   => __("SimplePie"),
 111                 3   => __("Twitter OAuth"));
 112
 113         if (DEFAULT_UPDATE_METHOD == "1") {
 114                 $update_methods[0] .= ' (SimplePie)';
 115         } else {
 116                 $update_methods[0] .= ' (Magpie)';
 117         }
 118
 119         $access_level_names = array(
 120                 0 => __("User"),
 121                 5 => __("Power User"),
 122                 10 => __("Administrator"));
 123
 124         require_once "modules/pref-prefs.php";
 125         require_once "modules/popup-dialog.php";
 126         require_once "modules/help.php";
 127         require_once "modules/pref-feeds.php";
 128         require_once "modules/pref-filters.php";
 129         require_once "modules/pref-labels.php";
 130         require_once "modules/pref-users.php";
 131         require_once "modules/pref-instances.php";
 132
 133         $error = sanity_check($link);
 134
 135         if ($error['code'] != 0 && $op != "logout") {
 136                 print json_encode(array("error" => $error));
 137                 return;
 138         }
 139
 140         switch($op) { // Select action according to $op value.
 141                 case "rpc":
 142                         // Handle remote procedure calls.
 143                         handle_rpc_request($link);
 144                 break; // rpc
 145
 146                 case "feeds":
 147                         $subop = $_REQUEST["subop"];
 148                         $root = (bool)$_REQUEST["root"];
 149
 150                         switch($subop) {
 151                                 case "catchupAll":
 152                                         db_query($link, "UPDATE ttrss_user_entries SET
 153                                                 last_read = NOW(),unread = false WHERE owner_uid = " . $_SESSION["uid"]);
 154                                         ccache_zero_all($link, $_SESSION["uid"]);
 155
 156                                 break;
 157
 158                                 case "collapse":
 159                                         $cat_id = db_escape_string($_REQUEST["cid"]);
 160                                         $mode = (int) db_escape_string($_REQUEST['mode']);
 161                                         toggle_collapse_cat($link, $cat_id, $mode);
 162                                         return;
 163                                 break;
 164                         }
 165
 166                         if (!$root) {
 167                                 print json_encode(outputFeedList($link));
 168                         } else {
 169
 170                                 $feeds = outputFeedList($link, false);
 171
 172                                 $root = array();
 173                                 $root['id'] = 'root';
 174                                 $root['name'] = __('Feeds');
 175                                 $root['items'] = $feeds['items'];
 176
 177                                 $fl = array();
 178                                 $fl['identifier'] = 'id';
 179                                 $fl['label'] = 'name';
 180                                 $fl['items'] = array($root);
 181
 182                                 print json_encode($fl);
 183                         }
 184
 185                 break; // feeds
 186
 187                 case "la":
 188                         $id = db_escape_string($_REQUEST['id']);
 189
 190                         $result = db_query($link, "SELECT link FROM ttrss_entries, ttrss_user_entries
 191                                 WHERE id = '$id' AND id = ref_id AND owner_uid = '".$_SESSION['uid']."'
 192                                 LIMIT 1");
 193
 194                         if (db_num_rows($result) == 1) {
 195                                 $article_url = db_fetch_result($result, 0, 'link');
 196                                 $article_url = str_replace("\n", "", $article_url);
 197
 198                                 header("Location: $article_url");
 199                                 return;
 200
 201                         } else {
 202                                 print_error(__("Article not found."));
 203                         }
 204                 break;
 205
 206                 case "view":
 207
 208                         $id = db_escape_string($_REQUEST["id"]);
 209                         $cids = explode(",", db_escape_string($_REQUEST["cids"]));
 210                         $mode = db_escape_string($_REQUEST["mode"]);
 211                         $omode = db_escape_string($_REQUEST["omode"]);
 212
 213                         // in prefetch mode we only output requested cids, main article
 214                         // just gets marked as read (it already exists in client cache)
 215
 216                         $articles = array();
 217
 218                         if ($mode == "") {
 219                                 array_push($articles, format_article($link, $id, false));
 220                         } else if ($mode == "zoom") {
 221                                 array_push($articles, format_article($link, $id, true, true));
 222                         } else if ($mode == "raw") {
 223                                 if ($_REQUEST['html']) {
 224                                         header("Content-Type: text/html");
 225                                         print '<link rel="stylesheet" type="text/css" href="tt-rss.css"/>';
 226                                 }
 227
 228                                 $article = format_article($link, $id, false);
 229                                 print $article['content'];
 230                                 return;
 231                         }
 232
 233                         catchupArticleById($link, $id, 0);
 234
 235                         if (!$_SESSION["bw_limit"]) {
 236                                 foreach ($cids as $cid) {
 237                                         if ($cid) {
 238                                                 array_push($articles, format_article($link, $cid, false, false));
 239                                         }
 240                                 }
 241                         }
 242
 243                         print json_encode($articles);
 244
 245                 break; // view
 246
 247                 case "viewfeed":
 248
 249                         $timing_info = getmicrotime();
 250
 251                         $reply = array();
 252
 253                         if ($_REQUEST["debug"]) $timing_info = print_checkpoint("0", $timing_info);
 254
 255                         $omode = db_escape_string($_REQUEST["omode"]);
 256
 257                         $feed = db_escape_string($_REQUEST["feed"]);
 258                         $subop = db_escape_string($_REQUEST["subop"]);
 259                         $view_mode = db_escape_string($_REQUEST["view_mode"]);
 260                         $limit = (int) get_pref($link, "DEFAULT_ARTICLE_LIMIT");
 261                         @$cat_view = db_escape_string($_REQUEST["cat"]) == "true";
 262                         @$next_unread_feed = db_escape_string($_REQUEST["nuf"]);
 263                         @$offset = db_escape_string($_REQUEST["skip"]);
 264                         @$vgroup_last_feed = db_escape_string($_REQUEST["vgrlf"]);
 265                         $order_by = db_escape_string($_REQUEST["order_by"]);
 266
 267                         if (is_numeric($feed)) $feed = (int) $feed;
 268
 269                         /* Feed -5 is a special case: it is used to display auxiliary information
 270                          * when there's nothing to load - e.g. no stuff in fresh feed */
 271
 272                         if ($feed == -5) {
 273                                 print json_encode(generate_dashboard_feed($link));
 274                                 return;
 275                         }
 276
 277                         $result = false;
 278
 279                         if ($feed < -10) {
 280                                 $label_feed = -11-$feed;
 281                                 $result = db_query($link, "SELECT id FROM ttrss_labels2 WHERE
 282                                         id = '$label_feed' AND owner_uid = " . $_SESSION['uid']);
 283                         } else if (!$cat_view && is_numeric($feed) && $feed > 0) {
 284                                 $result = db_query($link, "SELECT id FROM ttrss_feeds WHERE
 285                                         id = '$feed' AND owner_uid = " . $_SESSION['uid']);
 286                         } else if ($cat_view && is_numeric($feed) && $feed > 0) {
 287                                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories WHERE
 288                                         id = '$feed' AND owner_uid = " . $_SESSION['uid']);
 289                         }
 290
 291                         if ($result && db_num_rows($result) == 0) {
 292                                 print json_encode(generate_error_feed($link, __("Feed not found.")));
 293                                 return;
 294                         }
 295
 296                         /* Updating a label ccache means recalculating all of the caches
 297                          * so for performance reasons we don't do that here */
 298
 299                         if ($feed >= 0) {
 300                                 ccache_update($link, $feed, $_SESSION["uid"], $cat_view);
 301                         }
 302
 303                         set_pref($link, "_DEFAULT_VIEW_MODE", $view_mode);
 304                         set_pref($link, "_DEFAULT_VIEW_LIMIT", $limit);
 305                         set_pref($link, "_DEFAULT_VIEW_ORDER_BY", $order_by);
 306
 307                         if (!$cat_view && preg_match("/^[0-9][0-9]*$/", $feed)) {
 308                                 db_query($link, "UPDATE ttrss_feeds SET last_viewed = NOW()
 309                                         WHERE id = '$feed' AND owner_uid = ".$_SESSION["uid"]);
 310                         }
 311
 312                         $reply['headlines'] = array();
 313
 314                         if (!$next_unread_feed)
 315                                 $reply['headlines']['id'] = $feed;
 316                         else
 317                                 $reply['headlines']['id'] = $next_unread_feed;
 318
 319                         $reply['headlines']['is_cat'] = (bool) $cat_view;
 320
 321                         $override_order = false;
 322
 323                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
 324                                 $date_sort_field = "updated";
 325                         } else {
 326                                 $date_sort_field = "date_entered";
 327                         }
 328
 329                         switch ($order_by) {
 330                                 case "date":
 331                                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
 332                                                 $override_order = "$date_sort_field";
 333                                         } else {
 334                                                 $override_order = "$date_sort_field DESC";
 335                                         }
 336                                         break;
 337
 338                                 case "title":
 339                                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
 340                                                 $override_order = "title DESC, $date_sort_field";
 341                                         } else {
 342                                                 $override_order = "title, $date_sort_field DESC";
 343                                         }
 344                                         break;
 345
 346                                 case "score":
 347                                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
 348                                                 $override_order = "score, $date_sort_field";
 349                                         } else {
 350                                                 $override_order = "score DESC, $date_sort_field DESC";
 351                                         }
 352                                         break;
 353                         }
 354
 355                         if ($_REQUEST["debug"]) $timing_info = print_checkpoint("04", $timing_info);
 356
 357                         $ret = format_headlines_list($link, $feed, $subop,
 358                                 $view_mode, $limit, $cat_view, $next_unread_feed, $offset,
 359                                 $vgroup_last_feed, $override_order);
 360
 361                         $topmost_article_ids = $ret[0];
 362                         $headlines_count = $ret[1];
 363                         $returned_feed = $ret[2];
 364                         $disable_cache = $ret[3];
 365                         $vgroup_last_feed = $ret[4];
 366
 367 //                      if ($_REQUEST["debug"]) print_r($ret);
 368
 369                         $reply['headlines']['content'] =& $ret[5]['content'];
 370                         $reply['headlines']['toolbar'] =& $ret[5]['toolbar'];
 371
 372                         if ($_REQUEST["debug"]) $timing_info = print_checkpoint("05", $timing_info);
 373
 374                         $reply['headlines-info'] = array("count" => (int) $headlines_count,
 375                                 "vgroup_last_feed" => $vgroup_last_feed,
 376                                 "disable_cache" => (bool) $disable_cache);
 377
 378                         if ($_REQUEST["debug"]) $timing_info = print_checkpoint("20", $timing_info);
 379
 380                         if (is_array($topmost_article_ids) && !get_pref($link, 'COMBINED_DISPLAY_MODE') && !$_SESSION["bw_limit"]) {
 381                                 $articles = array();
 382
 383                                 foreach ($topmost_article_ids as $id) {
 384                                         array_push($articles, format_article($link, $id, false));
 385                                 }
 386
 387                                 $reply['articles'] = $articles;
 388                         }
 389
 390 //                      if ($subop) {
 391 //                              $reply['counters'] = getAllCounters($link, $omode, $feed);
 392 //                      }
 393
 394                         if ($_REQUEST["debug"]) $timing_info = print_checkpoint("30", $timing_info);
 395
 396                         $reply['runtime-info'] = make_runtime_info($link);
 397
 398                         print json_encode($reply);
 399
 400                 break; // viewfeed
 401
 402                 case "pref-feeds":
 403                         module_pref_feeds($link);
 404                 break; // pref-feeds
 405
 406                 case "pref-filters":
 407                         module_pref_filters($link);
 408                 break; // pref-filters
 409
 410                 case "pref-labels":
 411                         module_pref_labels($link);
 412                 break; // pref-labels
 413
 414                 case "pref-prefs":
 415                         module_pref_prefs($link);
 416                 break; // pref-prefs
 417
 418                 case "pref-users":
 419                         module_pref_users($link);
 420                 break; // prefs-users
 421
 422                 case "help":
 423                         module_help($link);
 424                 break; // help
 425
 426                 case "dlg":
 427                         module_popup_dialog($link);
 428                 break; // dlg
 429
 430                 case "pref-pub-items":
 431                         module_pref_pub_items($link);
 432                 break; // pref-pub-items
 433
 434                 case "globalUpdateFeeds":
 435                         // Update all feeds needing a update.
 436                         update_daemon_common($link, 0, true, true);
 437                 break; // globalUpdateFeeds
 438
 439                 case "pref-feed-browser":
 440                         module_pref_feed_browser($link);
 441                 break; // pref-feed-browser
 442
 443                 case "pref-instances":
 444                         module_pref_instances($link);
 445                 break; // pref-instances
 446
 447                 case "rss":
 448                         $feed = db_escape_string($_REQUEST["id"]);
 449                         $key = db_escape_string($_REQUEST["key"]);
 450                         $is_cat = $_REQUEST["is_cat"] != false;
 451                         $limit = (int)db_escape_string($_REQUEST["limit"]);
 452
 453                         $search = db_escape_string($_REQUEST["q"]);
 454                         $match_on = db_escape_string($_REQUEST["m"]);
 455                         $search_mode = db_escape_string($_REQUEST["smode"]);
 456                         $view_mode = db_escape_string($_REQUEST["view-mode"]);
 457
 458                         if (SINGLE_USER_MODE) {
 459                                 authenticate_user($link, "admin", null);
 460                         }
 461
 462                         $owner_id = false;
 463
 464                         if ($key) {
 465                                 $result = db_query($link, "SELECT owner_uid FROM
 466                                         ttrss_access_keys WHERE access_key = '$key' AND feed_id = '$feed'");
 467
 468                                 if (db_num_rows($result) == 1)
 469                                         $owner_id = db_fetch_result($result, 0, "owner_uid");
 470                         }
 471
 472                         if ($owner_id) {
 473                                 $_SESSION['uid'] = $owner_id;
 474
 475                                 generate_syndicated_feed($link, 0, $feed, $is_cat, $limit,
 476                                         $search, $search_mode, $match_on, $view_mode);
 477                         } else {
 478                                 header('HTTP/1.1 403 Forbidden');
 479                         }
 480                 break; // rss
 481
 482                 case "getUnread":
 483                         $login = db_escape_string($_REQUEST["login"]);
 484                         $fresh = $_REQUEST["fresh"] == "1";
 485
 486                         $result = db_query($link, "SELECT id FROM ttrss_users WHERE login = '$login'");
 487
 488                         if (db_num_rows($result) == 1) {
 489                                 $uid = db_fetch_result($result, 0, "id");
 490
 491                                 print getGlobalUnread($link, $uid);
 492
 493                                 if ($fresh) {
 494                                         print ";";
 495                                         print getFeedArticles($link, -3, false, true, $uid);
 496                                 }
 497
 498                         } else {
 499                                 print "-1;User not found";
 500                         }
 501
 502                 break; // getUnread
 503
 504                 case "digestTest":
 505                         print_r(prepare_headlines_digest($link, $_SESSION["uid"]));
 506                 break; // digestTest
 507
 508                 case "digestSend":
 509                         send_headlines_digests($link);
 510                 break; // digestSend
 511
 512                 case "loading":
 513                         header("Content-type: text/html");
 514                         print __("Loading, please wait...") . " " .
 515                                 "<img src='images/indicator_tiny.gif'>";
 516                 break; // loading
 517
 518                 case "getProfiles":
 519                         $login = db_escape_string($_REQUEST["login"]);
 520                         $password = db_escape_string($_REQUEST["password"]);
 521
 522                         if (authenticate_user($link, $login, $password)) {
 523                                 $result = db_query($link, "SELECT * FROM ttrss_settings_profiles
 524                                         WHERE owner_uid = " . $_SESSION["uid"] . " ORDER BY title");
 525
 526                                 print "<select style='width: 100%' name='profile'>";
 527
 528                                 print "<option value='0'>" . __("Default profile") . "</option>";
 529
 530                                 while ($line = db_fetch_assoc($result)) {
 531                                         $id = $line["id"];
 532                                         $title = $line["title"];
 533
 534                                         print "<option value='$id'>$title</option>";
 535                                 }
 536
 537                                 print "</select>";
 538
 539                                 $_SESSION = array();
 540                         }
 541                 break; // getprofiles
 542
 543                 case "pubsub":
 544                         $mode = db_escape_string($_REQUEST['hub_mode']);
 545                         $feed_id = (int) db_escape_string($_REQUEST['id']);
 546                         $feed_url = db_escape_string($_REQUEST['hub_topic']);
 547
 548                         if (!PUBSUBHUBBUB_ENABLED) {
 549                                 header('HTTP/1.0 404 Not Found');
 550                                 echo "404 Not found";
 551                                 return;
 552                         }
 553
 554                         // TODO: implement hub_verifytoken checking
 555
 556                         $result = db_query($link, "SELECT feed_url FROM ttrss_feeds
 557                                 WHERE id = '$feed_id'");
 558
 559                         if (db_num_rows($result) != 0) {
 560
 561                                 $check_feed_url = db_fetch_result($result, 0, "feed_url");
 562
 563                                 if ($check_feed_url && ($check_feed_url == $feed_url || !$feed_url)) {
 564                                         if ($mode == "subscribe") {
 565
 566                                                 db_query($link, "UPDATE ttrss_feeds SET pubsub_state = 2
 567                                                         WHERE id = '$feed_id'");
 568
 569                                                 print $_REQUEST['hub_challenge'];
 570                                                 return;
 571
 572                                         } else if ($mode == "unsubscribe") {
 573
 574                                                 db_query($link, "UPDATE ttrss_feeds SET pubsub_state = 0
 575                                                         WHERE id = '$feed_id'");
 576
 577                                                 print $_REQUEST['hub_challenge'];
 578                                                 return;
 579
 580                                         } else if (!$mode) {
 581
 582                                                 // Received update ping, schedule feed update.
 583                                                 //update_rss_feed($link, $feed_id, true, true);
 584
 585                                                 db_query($link, "UPDATE ttrss_feeds SET
 586                                                         last_update_started = '1970-01-01',
 587                                                         last_updated = '1970-01-01' WHERE id = '$feed_id' AND
 588                                                         owner_uid = ".$_SESSION["uid"]);
 589
 590                                         }
 591                                 } else {
 592                                         header('HTTP/1.0 404 Not Found');
 593                                         echo "404 Not found";
 594                                 }
 595                         } else {
 596                                 header('HTTP/1.0 404 Not Found');
 597                                 echo "404 Not found";
 598                         }
 599
 600                 break; // pubsub
 601
 602                 case "logout":
 603                         logout_user();
 604                         header("Location: tt-rss.php");
 605                 break; // logout
 606
 607                 case "fbexport":
 608
 609                         $access_key = db_escape_string($_POST["key"]);
 610
 611                         // TODO: rate limit checking using last_connected
 612                         $result = db_query($link, "SELECT id FROM ttrss_linked_instances
 613                                 WHERE access_key = '$access_key'");
 614
 615                         if (db_num_rows($result) == 1) {
 616
 617                                 $instance_id = db_fetch_result($result, 0, "id");
 618
 619                                 $result = db_query($link, "SELECT feed_url, site_url, title, subscribers
 620                                         FROM ttrss_feedbrowser_cache ORDER BY subscribers DESC LIMIT 100");
 621
 622                                 $feeds = array();
 623
 624                                 while ($line = db_fetch_assoc($result)) {
 625                                         array_push($feeds, $line);
 626                                 }
 627
 628                                 db_query($link, "UPDATE ttrss_linked_instances SET
 629                                         last_status_in = 1 WHERE id = '$instance_id'");
 630
 631                                 print json_encode(array("feeds" => $feeds));
 632                         } else {
 633                                 print json_encode(array("error" => array("code" => 6)));
 634                         }
 635                 break; // fbexport
 636
 637                 case "share":
 638                         $uuid = db_escape_string($_REQUEST["key"]);
 639
 640                         $result = db_query($link, "SELECT ref_id, owner_uid FROM ttrss_user_entries WHERE
 641                                 uuid = '$uuid'");
 642
 643                         if (db_num_rows($result) != 0) {
 644                                 header("Content-Type: text/html");
 645
 646                                 $id = db_fetch_result($result, 0, "ref_id");
 647                                 $owner_uid = db_fetch_result($result, 0, "owner_uid");
 648
 649                                 $_SESSION["uid"] = $owner_uid;
 650                                 $article = format_article($link, $id, false, true);
 651                                 $_SESSION["uid"] = "";
 652
 653                                 print_r($article['content']);
 654
 655                         } else {
 656                                 print "Article not found.";
 657                         }
 658
 659                         break;
 660
 661                 default:
 662                         header("Content-Type: text/plain");
 663                         print json_encode(array("error" => array("code" => 7)));
 664                 break; // fallback
 665         } // Select action according to $op value.
 666
 667         // We close the connection to database.
 668         db_close($link);
 669 ?>