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