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