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" && $op != "pubsub") {
  64
  65                 if ($op == 'pref-feeds' && $_REQUEST['subop'] == 'add') {
  66                         header("Content-Type: text/html");
  67                         login_sequence($link);
  68                         render_login_form($link);
  69                 } else {
  70                         header("Content-Type: text/plain");
  71                         print json_encode(array("error" => array("code" => 6)));
  72                 }
  73                 return;
  74         }
  75
  76         $purge_intervals = array(
  77                 0  => __("Use default"),
  78                 -1 => __("Never purge"),
  79                 5  => __("1 week old"),
  80                 14 => __("2 weeks old"),
  81                 31 => __("1 month old"),
  82                 60 => __("2 months old"),
  83                 90 => __("3 months old"));
  84
  85         $update_intervals = array(
  86                 0   => __("Default interval"),
  87                 -1  => __("Disable updates"),
  88                 15  => __("Each 15 minutes"),
  89                 30  => __("Each 30 minutes"),
  90                 60  => __("Hourly"),
  91                 240 => __("Each 4 hours"),
  92                 720 => __("Each 12 hours"),
  93                 1440 => __("Daily"),
  94                 10080 => __("Weekly"));
  95
  96         $update_intervals_nodefault = array(
  97                 -1  => __("Disable updates"),
  98                 15  => __("Each 15 minutes"),
  99                 30  => __("Each 30 minutes"),
 100                 60  => __("Hourly"),
 101                 240 => __("Each 4 hours"),
 102                 720 => __("Each 12 hours"),
 103                 1440 => __("Daily"),
 104                 10080 => __("Weekly"));
 105
 106         $update_methods = array(
 107                 0   => __("Default"),
 108                 1   => __("Magpie"),
 109                 2   => __("SimplePie"),
 110                 3   => __("Twitter OAuth"));
 111
 112         if (DEFAULT_UPDATE_METHOD == "1") {
 113                 $update_methods[0] .= ' (SimplePie)';
 114         } else {
 115                 $update_methods[0] .= ' (Magpie)';
 116         }
 117
 118         $access_level_names = array(
 119                 0 => __("User"),
 120                 5 => __("Power User"),
 121                 10 => __("Administrator"));
 122
 123         require_once "modules/pref-prefs.php";
 124         require_once "modules/popup-dialog.php";
 125         require_once "modules/help.php";
 126         require_once "modules/pref-feeds.php";
 127         require_once "modules/pref-filters.php";
 128         require_once "modules/pref-labels.php";
 129         require_once "modules/pref-users.php";
 130         require_once "modules/pref-instances.php";
 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 $op value.
 140                 case "rpc":
 141                         // Handle remote procedure calls.
 142                         handle_rpc_request($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"]);
 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                         /* 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 && $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 && $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                         $reply['headlines']['content'] = $ret[5];
 365                         $reply['headlines']['toolbar'] = $ret[6];
 366
 367                         if ($_REQUEST["debug"]) $timing_info = print_checkpoint("05", $timing_info);
 368
 369                         $headlines_unread = ccache_find($link, $returned_feed, $_SESSION["uid"],
 370                                         $cat_view, true);
 371
 372                         if ($headlines_unread == -1) {
 373                                 $headlines_unread = getFeedUnread($link, $returned_feed, $cat_view);
 374                         }
 375
 376                         $reply['headlines-info'] = array("count" => (int) $headlines_count,
 377                                 "vgroup_last_feed" => $vgroup_last_feed,
 378                                 "unread" => (int) $headlines_unread,
 379                                 "disable_cache" => (bool) $disable_cache);
 380
 381                         if ($_REQUEST["debug"]) $timing_info = print_checkpoint("20", $timing_info);
 382
 383                         if (is_array($topmost_article_ids) && !get_pref($link, 'COMBINED_DISPLAY_MODE') && !$_SESSION["bw_limit"]) {
 384                                 $articles = array();
 385
 386                                 foreach ($topmost_article_ids as $id) {
 387                                         array_push($articles, format_article($link, $id, false));
 388                                 }
 389
 390                                 $reply['articles'] = $articles;
 391                         }
 392
 393                         if ($subop) {
 394                                 $reply['counters'] = getAllCounters($link, $omode, $feed);
 395                         }
 396
 397                         if ($_REQUEST["debug"]) $timing_info = print_checkpoint("30", $timing_info);
 398
 399                         $reply['runtime-info'] = make_runtime_info($link);
 400
 401                         print json_encode($reply);
 402
 403                 break; // viewfeed
 404
 405                 case "pref-feeds":
 406                         module_pref_feeds($link);
 407                 break; // pref-feeds
 408
 409                 case "pref-filters":
 410                         module_pref_filters($link);
 411                 break; // pref-filters
 412
 413                 case "pref-labels":
 414                         module_pref_labels($link);
 415                 break; // pref-labels
 416
 417                 case "pref-prefs":
 418                         module_pref_prefs($link);
 419                 break; // pref-prefs
 420
 421                 case "pref-users":
 422                         module_pref_users($link);
 423                 break; // prefs-users
 424
 425                 case "help":
 426                         module_help($link);
 427                 break; // help
 428
 429                 case "dlg":
 430                         module_popup_dialog($link);
 431                 break; // dlg
 432
 433                 case "pref-pub-items":
 434                         module_pref_pub_items($link);
 435                 break; // pref-pub-items
 436
 437                 case "globalUpdateFeeds":
 438                         // Update all feeds needing a update.
 439                         update_daemon_common($link, 0, true, true);
 440                 break; // globalUpdateFeeds
 441
 442                 case "pref-feed-browser":
 443                         module_pref_feed_browser($link);
 444                 break; // pref-feed-browser
 445
 446                 case "pref-instances":
 447                         module_pref_instances($link);
 448                 break; // pref-instances
 449
 450                 case "rss":
 451                         $feed = db_escape_string($_REQUEST["id"]);
 452                         $key = db_escape_string($_REQUEST["key"]);
 453                         $is_cat = $_REQUEST["is_cat"] != false;
 454                         $limit = (int)db_escape_string($_REQUEST["limit"]);
 455
 456                         $search = db_escape_string($_REQUEST["q"]);
 457                         $match_on = db_escape_string($_REQUEST["m"]);
 458                         $search_mode = db_escape_string($_REQUEST["smode"]);
 459                         $view_mode = db_escape_string($_REQUEST["view-mode"]);
 460
 461                         if (SINGLE_USER_MODE) {
 462                                 authenticate_user($link, "admin", null);
 463                         }
 464
 465                         $owner_id = false;
 466
 467                         if ($key) {
 468                                 $result = db_query($link, "SELECT owner_uid FROM
 469                                         ttrss_access_keys WHERE access_key = '$key' AND feed_id = '$feed'");
 470
 471                                 if (db_num_rows($result) == 1)
 472                                         $owner_id = db_fetch_result($result, 0, "owner_uid");
 473                         }
 474
 475                         if ($owner_id) {
 476                                 $_SESSION['uid'] = $owner_id;
 477
 478                                 generate_syndicated_feed($link, 0, $feed, $is_cat, $limit,
 479                                         $search, $search_mode, $match_on, $view_mode);
 480                         } else {
 481                                 header('HTTP/1.1 403 Forbidden');
 482                         }
 483                 break; // rss
 484
 485                 case "getUnread":
 486                         $login = db_escape_string($_REQUEST["login"]);
 487                         $fresh = $_REQUEST["fresh"] == "1";
 488
 489                         $result = db_query($link, "SELECT id FROM ttrss_users WHERE login = '$login'");
 490
 491                         if (db_num_rows($result) == 1) {
 492                                 $uid = db_fetch_result($result, 0, "id");
 493
 494                                 print getGlobalUnread($link, $uid);
 495
 496                                 if ($fresh) {
 497                                         print ";";
 498                                         print getFeedArticles($link, -3, false, true, $uid);
 499                                 }
 500
 501                         } else {
 502                                 print "-1;User not found";
 503                         }
 504
 505                 break; // getUnread
 506
 507                 case "digestTest":
 508                         print_r(prepare_headlines_digest($link, $_SESSION["uid"]));
 509                 break; // digestTest
 510
 511                 case "digestSend":
 512                         send_headlines_digests($link);
 513                 break; // digestSend
 514
 515                 case "loading":
 516                         header("Content-type: text/html");
 517                         print __("Loading, please wait...") . " " .
 518                                 "<img src='images/indicator_tiny.gif'>";
 519                 break; // loading
 520
 521                 case "getProfiles":
 522                         $login = db_escape_string($_REQUEST["login"]);
 523                         $password = db_escape_string($_REQUEST["password"]);
 524
 525                         if (authenticate_user($link, $login, $password)) {
 526                                 $result = db_query($link, "SELECT * FROM ttrss_settings_profiles
 527                                         WHERE owner_uid = " . $_SESSION["uid"] . " ORDER BY title");
 528
 529                                 print "<select style='width: 100%' name='profile'>";
 530
 531                                 print "<option value='0'>" . __("Default profile") . "</option>";
 532
 533                                 while ($line = db_fetch_assoc($result)) {
 534                                         $id = $line["id"];
 535                                         $title = $line["title"];
 536
 537                                         print "<option value='$id'>$title</option>";
 538                                 }
 539
 540                                 print "</select>";
 541
 542                                 $_SESSION = array();
 543                         }
 544                 break; // getprofiles
 545
 546                 case "pubsub":
 547                         $mode = db_escape_string($_REQUEST['hub_mode']);
 548                         $feed_id = db_escape_string($_REQUEST['id']);
 549                         $feed_url = db_escape_string($_REQUEST['hub_topic']);
 550
 551                         // TODO: implement hub_verifytoken checking
 552
 553                         $result = db_query($link, "SELECT feed_url FROM ttrss_feeds
 554                                 WHERE id = '$feed_id'");
 555
 556                         if (db_num_rows($result) != 0) {
 557
 558                                 $check_feed_url = db_fetch_result($result, 0, "feed_url");
 559
 560                                 if ($check_feed_url && ($check_feed_url == $feed_url || !$feed_url)) {
 561                                         if ($mode == "subscribe") {
 562
 563                                                 db_query($link, "UPDATE ttrss_feeds SET pubsub_state = 2
 564                                                         WHERE id = '$feed_id'");
 565
 566                                                 print $_REQUEST['hub_challenge'];
 567                                                 return;
 568
 569                                         } else if ($mode == "unsubscribe") {
 570
 571                                                 db_query($link, "UPDATE ttrss_feeds SET pubsub_state = 0
 572                                                         WHERE id = '$feed_id'");
 573
 574                                                 print $_REQUEST['hub_challenge'];
 575                                                 return;
 576
 577                                         } else if (!$mode) {
 578
 579                                                 // Received update ping, schedule feed update.
 580
 581                                                 update_rss_feed($link, $feed_id, true, true);
 582
 583                                         }
 584                                 } else {
 585                                         header('HTTP/1.0 404 Not Found');
 586                                         echo "404 Not found";
 587                                 }
 588                         } else {
 589                                 header('HTTP/1.0 404 Not Found');
 590                                 echo "404 Not found";
 591                         }
 592
 593                 break; // pubsub
 594
 595                 case "logout":
 596                         logout_user();
 597                         header("Location: tt-rss.php");
 598                 break; // logout
 599
 600                 case "fbexport":
 601
 602                         $access_key = db_escape_string($_POST["key"]);
 603
 604                         // TODO: rate limit checking using last_connected
 605                         $result = db_query($link, "SELECT id FROM ttrss_linked_instances
 606                                 WHERE access_key = '$access_key'");
 607
 608                         if (db_num_rows($result) == 1) {
 609
 610                                 $instance_id = db_fetch_result($result, 0, "id");
 611
 612                                 $result = db_query($link, "SELECT feed_url, site_url, title, subscribers
 613                                         FROM ttrss_feedbrowser_cache ORDER BY subscribers DESC LIMIT 100");
 614
 615                                 $feeds = array();
 616
 617                                 while ($line = db_fetch_assoc($result)) {
 618                                         array_push($feeds, $line);
 619                                 }
 620
 621                                 db_query($link, "UPDATE ttrss_linked_instances SET
 622                                         last_status_in = 1 WHERE id = '$instance_id'");
 623
 624                                 print json_encode(array("feeds" => $feeds));
 625                         } else {
 626                                 print json_encode(array("error" => array("code" => 6)));
 627                         }
 628                 break; // fbexport
 629
 630                 default:
 631                         header("Content-Type: text/plain");
 632                         print json_encode(array("error" => array("code" => 7)));
 633                 break; // fallback
 634         } // Select action according to $op value.
 635
 636         // We close the connection to database.
 637         db_close($link);
 638 ?>