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