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