backend.php

   1 <?php
   2         set_include_path(get_include_path() . PATH_SEPARATOR . "include");
   3
   4         /* remove ill effects of magic quotes */
   5
   6         if (get_magic_quotes_gpc()) {
   7                 function stripslashes_deep($value) {
   8                         $value = is_array($value) ?
   9                                 array_map('stripslashes_deep', $value) : stripslashes($value);
  10                                 return $value;
  11                 }
  12
  13                 $_POST = array_map('stripslashes_deep', $_POST);
  14                 $_GET = array_map('stripslashes_deep', $_GET);
  15                 $_COOKIE = array_map('stripslashes_deep', $_COOKIE);
  16                 $_REQUEST = array_map('stripslashes_deep', $_REQUEST);
  17         }
  18
  19         function __autoload($class) {
  20                 $file = "classes/".strtolower(basename($class)).".php";
  21                 if (file_exists($file)) {
  22                         require $file;
  23                 }
  24         }
  25
  26         $op = $_REQUEST["op"];
  27
  28         require_once "functions.php";
  29         if ($op != "share") require_once "sessions.php";
  30         require_once "sanity_check.php";
  31         require_once "config.php";
  32         require_once "db.php";
  33         require_once "db-prefs.php";
  34
  35         no_cache_incantation();
  36
  37         startup_gettext();
  38
  39         $script_started = getmicrotime();
  40
  41         $link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME);
  42
  43         if (!$link) {
  44                 if (DB_TYPE == "mysql") {
  45                         print mysql_error();
  46                 }
  47                 // PG seems to display its own errors just fine by default.
  48                 return;
  49         }
  50
  51         init_connection($link);
  52
  53         $method = strtolower($_REQUEST["method"]);
  54         $mode = $_REQUEST["mode"];
  55
  56         if ((!$op || $op == "rss" || $op == "dlg") && !$_REQUEST["noxml"]) {
  57                         header("Content-Type: application/xml; charset=utf-8");
  58         } else {
  59                         header("Content-Type: text/plain; charset=utf-8");
  60         }
  61
  62         if (ENABLE_GZIP_OUTPUT) {
  63                 ob_start("ob_gzhandler");
  64         }
  65
  66         if (SINGLE_USER_MODE) {
  67                 authenticate_user($link, "admin", null);
  68         }
  69
  70         $public_calls = array("globalUpdateFeeds", "rss", "getUnread", "getProfiles", "share",
  71                 "fbexport", "logout", "pubsub");
  72
  73         if (array_search($op, $public_calls) !== false) {
  74
  75                 handle_public_request($link, $op);
  76                 return;
  77
  78         } else if (!($_SESSION["uid"] && validate_session($link))) {
  79                 if ($op == 'pref-feeds' && $_REQUEST['method'] == 'add') {
  80                         header("Content-Type: text/html");
  81                         login_sequence($link);
  82                         render_login_form($link);
  83                 } else {
  84                         header("Content-Type: text/plain");
  85                         print json_encode(array("error" => array("code" => 6)));
  86                 }
  87                 return;
  88         }
  89
  90         $purge_intervals = array(
  91                 0  => __("Use default"),
  92                 -1 => __("Never purge"),
  93                 5  => __("1 week old"),
  94                 14 => __("2 weeks old"),
  95                 31 => __("1 month old"),
  96                 60 => __("2 months old"),
  97                 90 => __("3 months old"));
  98
  99         $update_intervals = array(
 100                 0   => __("Default interval"),
 101                 -1  => __("Disable updates"),
 102                 15  => __("Each 15 minutes"),
 103                 30  => __("Each 30 minutes"),
 104                 60  => __("Hourly"),
 105                 240 => __("Each 4 hours"),
 106                 720 => __("Each 12 hours"),
 107                 1440 => __("Daily"),
 108                 10080 => __("Weekly"));
 109
 110         $update_intervals_nodefault = array(
 111                 -1  => __("Disable updates"),
 112                 15  => __("Each 15 minutes"),
 113                 30  => __("Each 30 minutes"),
 114                 60  => __("Hourly"),
 115                 240 => __("Each 4 hours"),
 116                 720 => __("Each 12 hours"),
 117                 1440 => __("Daily"),
 118                 10080 => __("Weekly"));
 119
 120         $update_methods = array(
 121                 0   => __("Default"),
 122                 1   => __("Magpie"),
 123                 2   => __("SimplePie"),
 124                 3   => __("Twitter OAuth"));
 125
 126         if (DEFAULT_UPDATE_METHOD == "1") {
 127                 $update_methods[0] .= ' (SimplePie)';
 128         } else {
 129                 $update_methods[0] .= ' (Magpie)';
 130         }
 131
 132         $access_level_names = array(
 133                 0 => __("User"),
 134                 5 => __("Power User"),
 135                 10 => __("Administrator"));
 136
 137
 138
 139         $error = sanity_check($link);
 140
 141         if ($error['code'] != 0 && $op != "logout") {
 142                 print json_encode(array("error" => $error));
 143                 return;
 144         }
 145
 146         if (class_exists($op)) {
 147                 $handler = new $op($link, $_REQUEST);
 148
 149                 if ($handler) {
 150                         if ($handler->before()) {
 151                                 if (method_exists($handler, $method)) {
 152                                         return $handler->$method();
 153                                 }
 154                         }
 155                 }
 156         }
 157
 158         switch($op) { // Select action according to $op value.
 159                 case "feeds":
 160                         $method = $_REQUEST["method"];
 161                         $root = (bool)$_REQUEST["root"];
 162
 163                         switch($method) {
 164                                 case "catchupAll":
 165                                         db_query($link, "UPDATE ttrss_user_entries SET
 166                                                 last_read = NOW(),unread = false WHERE owner_uid = " . $_SESSION["uid"]);
 167                                         ccache_zero_all($link, $_SESSION["uid"]);
 168
 169                                 break;
 170
 171                                 case "collapse":
 172                                         $cat_id = db_escape_string($_REQUEST["cid"]);
 173                                         $mode = (int) db_escape_string($_REQUEST['mode']);
 174                                         toggle_collapse_cat($link, $cat_id, $mode);
 175                                         return;
 176                                 break;
 177                         }
 178
 179                         if (!$root) {
 180                                 print json_encode(outputFeedList($link));
 181                         } else {
 182
 183                                 $feeds = outputFeedList($link, false);
 184
 185                                 $root = array();
 186                                 $root['id'] = 'root';
 187                                 $root['name'] = __('Feeds');
 188                                 $root['items'] = $feeds['items'];
 189
 190                                 $fl = array();
 191                                 $fl['identifier'] = 'id';
 192                                 $fl['label'] = 'name';
 193                                 $fl['items'] = array($root);
 194
 195                                 print json_encode($fl);
 196                         }
 197
 198                 break; // feeds
 199
 200                 case "la":
 201                         $id = db_escape_string($_REQUEST['id']);
 202
 203                         $result = db_query($link, "SELECT link FROM ttrss_entries, ttrss_user_entries
 204                                 WHERE id = '$id' AND id = ref_id AND owner_uid = '".$_SESSION['uid']."'
 205                                 LIMIT 1");
 206
 207                         if (db_num_rows($result) == 1) {
 208                                 $article_url = db_fetch_result($result, 0, 'link');
 209                                 $article_url = str_replace("\n", "", $article_url);
 210
 211                                 header("Location: $article_url");
 212                                 return;
 213
 214                         } else {
 215                                 print_error(__("Article not found."));
 216                         }
 217                 break;
 218
 219                 case "view":
 220
 221                         $id = db_escape_string($_REQUEST["id"]);
 222                         $cids = explode(",", db_escape_string($_REQUEST["cids"]));
 223                         $mode = db_escape_string($_REQUEST["mode"]);
 224                         $omode = db_escape_string($_REQUEST["omode"]);
 225
 226                         // in prefetch mode we only output requested cids, main article
 227                         // just gets marked as read (it already exists in client cache)
 228
 229                         $articles = array();
 230
 231                         if ($mode == "") {
 232                                 array_push($articles, format_article($link, $id, false));
 233                         } else if ($mode == "zoom") {
 234                                 array_push($articles, format_article($link, $id, true, true));
 235                         } else if ($mode == "raw") {
 236                                 if ($_REQUEST['html']) {
 237                                         header("Content-Type: text/html");
 238                                         print '<link rel="stylesheet" type="text/css" href="tt-rss.css"/>';
 239                                 }
 240
 241                                 $article = format_article($link, $id, false);
 242                                 print $article['content'];
 243                                 return;
 244                         }
 245
 246                         catchupArticleById($link, $id, 0);
 247
 248                         if (!$_SESSION["bw_limit"]) {
 249                                 foreach ($cids as $cid) {
 250                                         if ($cid) {
 251                                                 array_push($articles, format_article($link, $cid, false, false));
 252                                         }
 253                                 }
 254                         }
 255
 256                         print json_encode($articles);
 257
 258                 break; // view
 259
 260                 case "viewfeed":
 261
 262                         $timing_info = getmicrotime();
 263
 264                         $reply = array();
 265
 266                         if ($_REQUEST["debug"]) $timing_info = print_checkpoint("0", $timing_info);
 267
 268                         $omode = db_escape_string($_REQUEST["omode"]);
 269
 270                         $feed = db_escape_string($_REQUEST["feed"]);
 271                         $method = db_escape_string($_REQUEST["method"]);
 272                         $view_mode = db_escape_string($_REQUEST["view_mode"]);
 273                         $limit = (int) get_pref($link, "DEFAULT_ARTICLE_LIMIT");
 274                         @$cat_view = db_escape_string($_REQUEST["cat"]) == "true";
 275                         @$next_unread_feed = db_escape_string($_REQUEST["nuf"]);
 276                         @$offset = db_escape_string($_REQUEST["skip"]);
 277                         @$vgroup_last_feed = db_escape_string($_REQUEST["vgrlf"]);
 278                         $order_by = db_escape_string($_REQUEST["order_by"]);
 279
 280                         if (is_numeric($feed)) $feed = (int) $feed;
 281
 282                         /* Feed -5 is a special case: it is used to display auxiliary information
 283                          * when there's nothing to load - e.g. no stuff in fresh feed */
 284
 285                         if ($feed == -5) {
 286                                 print json_encode(generate_dashboard_feed($link));
 287                                 return;
 288                         }
 289
 290                         $result = false;
 291
 292                         if ($feed < -10) {
 293                                 $label_feed = -11-$feed;
 294                                 $result = db_query($link, "SELECT id FROM ttrss_labels2 WHERE
 295                                         id = '$label_feed' AND owner_uid = " . $_SESSION['uid']);
 296                         } else if (!$cat_view && is_numeric($feed) && $feed > 0) {
 297                                 $result = db_query($link, "SELECT id FROM ttrss_feeds WHERE
 298                                         id = '$feed' AND owner_uid = " . $_SESSION['uid']);
 299                         } else if ($cat_view && is_numeric($feed) && $feed > 0) {
 300                                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories WHERE
 301                                         id = '$feed' AND owner_uid = " . $_SESSION['uid']);
 302                         }
 303
 304                         if ($result && db_num_rows($result) == 0) {
 305                                 print json_encode(generate_error_feed($link, __("Feed not found.")));
 306                                 return;
 307                         }
 308
 309                         /* Updating a label ccache means recalculating all of the caches
 310                          * so for performance reasons we don't do that here */
 311
 312                         if ($feed >= 0) {
 313                                 ccache_update($link, $feed, $_SESSION["uid"], $cat_view);
 314                         }
 315
 316                         set_pref($link, "_DEFAULT_VIEW_MODE", $view_mode);
 317                         set_pref($link, "_DEFAULT_VIEW_LIMIT", $limit);
 318                         set_pref($link, "_DEFAULT_VIEW_ORDER_BY", $order_by);
 319
 320                         if (!$cat_view && preg_match("/^[0-9][0-9]*$/", $feed)) {
 321                                 db_query($link, "UPDATE ttrss_feeds SET last_viewed = NOW()
 322                                         WHERE id = '$feed' AND owner_uid = ".$_SESSION["uid"]);
 323                         }
 324
 325                         $reply['headlines'] = array();
 326
 327                         if (!$next_unread_feed)
 328                                 $reply['headlines']['id'] = $feed;
 329                         else
 330                                 $reply['headlines']['id'] = $next_unread_feed;
 331
 332                         $reply['headlines']['is_cat'] = (bool) $cat_view;
 333
 334                         $override_order = false;
 335
 336                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
 337                                 $date_sort_field = "updated";
 338                         } else {
 339                                 $date_sort_field = "date_entered";
 340                         }
 341
 342                         switch ($order_by) {
 343                                 case "date":
 344                                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
 345                                                 $override_order = "$date_sort_field";
 346                                         } else {
 347                                                 $override_order = "$date_sort_field DESC";
 348                                         }
 349                                         break;
 350
 351                                 case "title":
 352                                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
 353                                                 $override_order = "title DESC, $date_sort_field";
 354                                         } else {
 355                                                 $override_order = "title, $date_sort_field DESC";
 356                                         }
 357                                         break;
 358
 359                                 case "score":
 360                                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
 361                                                 $override_order = "score, $date_sort_field";
 362                                         } else {
 363                                                 $override_order = "score DESC, $date_sort_field DESC";
 364                                         }
 365                                         break;
 366                         }
 367
 368                         if ($_REQUEST["debug"]) $timing_info = print_checkpoint("04", $timing_info);
 369
 370                         $ret = format_headlines_list($link, $feed, $method,
 371                                 $view_mode, $limit, $cat_view, $next_unread_feed, $offset,
 372                                 $vgroup_last_feed, $override_order);
 373
 374                         $topmost_article_ids = $ret[0];
 375                         $headlines_count = $ret[1];
 376                         $returned_feed = $ret[2];
 377                         $disable_cache = $ret[3];
 378                         $vgroup_last_feed = $ret[4];
 379
 380 //                      if ($_REQUEST["debug"]) print_r($ret);
 381
 382                         $reply['headlines']['content'] =& $ret[5]['content'];
 383                         $reply['headlines']['toolbar'] =& $ret[5]['toolbar'];
 384
 385                         if ($_REQUEST["debug"]) $timing_info = print_checkpoint("05", $timing_info);
 386
 387                         $reply['headlines-info'] = array("count" => (int) $headlines_count,
 388                                 "vgroup_last_feed" => $vgroup_last_feed,
 389                                 "disable_cache" => (bool) $disable_cache);
 390
 391                         if ($_REQUEST["debug"]) $timing_info = print_checkpoint("20", $timing_info);
 392
 393                         if (is_array($topmost_article_ids) && !get_pref($link, 'COMBINED_DISPLAY_MODE') && !$_SESSION["bw_limit"]) {
 394                                 $articles = array();
 395
 396                                 foreach ($topmost_article_ids as $id) {
 397                                         array_push($articles, format_article($link, $id, false));
 398                                 }
 399
 400                                 $reply['articles'] = $articles;
 401                         }
 402
 403 //                      if ($method) {
 404 //                              $reply['counters'] = getAllCounters($link, $omode, $feed);
 405 //                      }
 406
 407                         if ($_REQUEST["debug"]) $timing_info = print_checkpoint("30", $timing_info);
 408
 409                         $reply['runtime-info'] = make_runtime_info($link);
 410
 411                         print json_encode($reply);
 412                 break; // viewfeed
 413
 414                 case "pref-feeds":
 415                         require_once "modules/pref-feeds.php";
 416                         module_pref_feeds($link);
 417                 break; // pref-feeds
 418
 419                 case "pref-filters":
 420                         require_once "modules/pref-filters.php";
 421                         module_pref_filters($link);
 422                 break; // pref-filters
 423
 424                 case "pref-labels":
 425                         require_once "modules/pref-labels.php";
 426                         module_pref_labels($link);
 427                 break; // pref-labels
 428
 429                 case "pref-prefs":
 430                         require_once "modules/pref-prefs.php";
 431                         module_pref_prefs($link);
 432                 break; // pref-prefs
 433
 434                 case "pref-users":
 435                         require_once "modules/pref-users.php";
 436                         module_pref_users($link);
 437                 break; // prefs-users
 438
 439                 case "help":
 440                         require_once "modules/help.php";
 441                         module_help($link);
 442                 break; // help
 443
 444                 case "dlg":
 445                         require_once "modules/popup-dialog.php";
 446                         module_popup_dialog($link);
 447                 break; // dlg
 448
 449                 case "pref-instances":
 450                         require_once "modules/pref-instances.php";
 451                         module_pref_instances($link);
 452                 break; // pref-instances
 453
 454                 case "digestTest":
 455                         print_r(prepare_headlines_digest($link, $_SESSION["uid"]));
 456                 break; // digestTest
 457
 458                 case "digestSend":
 459                         send_headlines_digests($link);
 460                 break; // digestSend
 461
 462                 case "loading":
 463                         header("Content-type: text/html");
 464                         print __("Loading, please wait...") . " " .
 465                                 "<img src='images/indicator_tiny.gif'>";
 466                 break; // loading
 467
 468                 default:
 469                         header("Content-Type: text/plain");
 470                         print json_encode(array("error" => array("code" => 7)));
 471                 break; // fallback
 472         } // Select action according to $op value.
 473
 474         // We close the connection to database.
 475         db_close($link);
 476 ?>