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                                 LIMIT 1");
 186
 187                         if (db_num_rows($result) == 1) {
 188                                 $article_url = db_fetch_result($result, 0, 'link');
 189                                 $article_url = str_replace("\n", "", $article_url);
 190
 191                                 header("Location: $article_url");
 192                                 return;
 193
 194                         } else {
 195                                 print_error(__("Article not found."));
 196                         }
 197                 break;
 198
 199                 case "view":
 200
 201                         $id = db_escape_string($_REQUEST["id"]);
 202                         $cids = split(",", db_escape_string($_REQUEST["cids"]));
 203                         $mode = db_escape_string($_REQUEST["mode"]);
 204                         $omode = db_escape_string($_REQUEST["omode"]);
 205
 206                         // in prefetch mode we only output requested cids, main article
 207                         // just gets marked as read (it already exists in client cache)
 208
 209                         $articles = array();
 210
 211                         if ($mode == "") {
 212                                 array_push($articles, format_article($link, $id, false));
 213                         } else if ($mode == "zoom") {
 214                                 array_push($articles, format_article($link, $id, false, true, true));
 215                         } else if ($mode == "raw") {
 216                                 if ($_REQUEST['html']) {
 217                                         header("Content-Type: text/html");
 218                                         print '<link rel="stylesheet" type="text/css" href="tt-rss.css"/>';
 219                                 }
 220
 221                                 $article = format_article($link, $id, false);
 222                                 print $article['content'];
 223                                 return;
 224                         } else {
 225                                 catchupArticleById($link, $id, 0);
 226                         }
 227
 228                         if (!$_SESSION["bw_limit"]) {
 229                                 foreach ($cids as $cid) {
 230                                         if ($cid) {
 231                                                 array_push($articles, format_article($link, $cid, false, false));
 232                                         }
 233                                 }
 234                         }
 235
 236                         print json_encode($articles);
 237
 238                 break; // view
 239
 240                 case "viewfeed":
 241
 242                         $timing_info = getmicrotime();
 243
 244                         $reply = array();
 245
 246                         if ($_REQUEST["debug"]) $timing_info = print_checkpoint("0", $timing_info);
 247
 248                         $omode = db_escape_string($_REQUEST["omode"]);
 249
 250                         $feed = db_escape_string($_REQUEST["feed"]);
 251                         $subop = db_escape_string($_REQUEST["subop"]);
 252                         $view_mode = db_escape_string($_REQUEST["view_mode"]);
 253                         $limit = (int) get_pref($link, "DEFAULT_ARTICLE_LIMIT");
 254                         @$cat_view = db_escape_string($_REQUEST["cat"]);
 255                         @$next_unread_feed = db_escape_string($_REQUEST["nuf"]);
 256                         @$offset = db_escape_string($_REQUEST["skip"]);
 257                         @$vgroup_last_feed = db_escape_string($_REQUEST["vgrlf"]);
 258                         $order_by = db_escape_string($_REQUEST["order_by"]);
 259
 260                         /* Feed -5 is a special case: it is used to display auxiliary information
 261                          * when there's nothing to load - e.g. no stuff in fresh feed */
 262
 263                         if ($feed == -5) {
 264                                 print json_encode(generate_dashboard_feed($link));
 265                                 return;
 266                         }
 267
 268                         $result = false;
 269
 270                         if ($feed < -10) {
 271                                 $label_feed = -11-$feed;
 272                                 $result = db_query($link, "SELECT id FROM ttrss_labels2 WHERE
 273                                         id = '$label_feed' AND owner_uid = " . $_SESSION['uid']);
 274                         } else if (!$cat_view && $feed > 0) {
 275                                 $result = db_query($link, "SELECT id FROM ttrss_feeds WHERE
 276                                         id = '$feed' AND owner_uid = " . $_SESSION['uid']);
 277                         } else if ($cat_view && $feed > 0) {
 278                                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories WHERE
 279                                         id = '$feed' AND owner_uid = " . $_SESSION['uid']);
 280                         }
 281
 282                         if ($result && db_num_rows($result) == 0) {
 283                                 print json_encode(generate_error_feed($link, __("Feed not found.")));
 284                                 return;
 285                         }
 286
 287                         /* Updating a label ccache means recalculating all of the caches
 288                          * so for performance reasons we don't do that here */
 289
 290                         if ($feed >= 0) {
 291                                 ccache_update($link, $feed, $_SESSION["uid"], $cat_view);
 292                         }
 293
 294                         set_pref($link, "_DEFAULT_VIEW_MODE", $view_mode);
 295                         set_pref($link, "_DEFAULT_VIEW_LIMIT", $limit);
 296                         set_pref($link, "_DEFAULT_VIEW_ORDER_BY", $order_by);
 297
 298                         if (!$cat_view && preg_match("/^[0-9][0-9]*$/", $feed)) {
 299                                 db_query($link, "UPDATE ttrss_feeds SET last_viewed = NOW()
 300                                         WHERE id = '$feed' AND owner_uid = ".$_SESSION["uid"]);
 301                         }
 302
 303                         $reply['headlines'] = array();
 304
 305                         if (!$next_unread_feed)
 306                                 $reply['headlines']['id'] = $feed;
 307                         else
 308                                 $reply['headlines']['id'] = $next_unread_feed;
 309
 310                         $reply['headlines']['is_cat'] = (bool) $cat_view;
 311
 312                         $override_order = false;
 313
 314                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
 315                                 $date_sort_field = "updated";
 316                         } else {
 317                                 $date_sort_field = "date_entered";
 318                         }
 319
 320                         switch ($order_by) {
 321                                 case "date":
 322                                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
 323                                                 $override_order = "$date_sort_field";
 324                                         } else {
 325                                                 $override_order = "$date_sort_field DESC";
 326                                         }
 327                                         break;
 328
 329                                 case "title":
 330                                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
 331                                                 $override_order = "title DESC, $date_sort_field";
 332                                         } else {
 333                                                 $override_order = "title, $date_sort_field DESC";
 334                                         }
 335                                         break;
 336
 337                                 case "score":
 338                                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
 339                                                 $override_order = "score, $date_sort_field";
 340                                         } else {
 341                                                 $override_order = "score DESC, $date_sort_field DESC";
 342                                         }
 343                                         break;
 344                         }
 345
 346                         if ($_REQUEST["debug"]) $timing_info = print_checkpoint("04", $timing_info);
 347
 348                         $ret = format_headlines_list($link, $feed, $subop,
 349                                 $view_mode, $limit, $cat_view, $next_unread_feed, $offset,
 350                                 $vgroup_last_feed, $override_order);
 351
 352                         $topmost_article_ids = $ret[0];
 353                         $headlines_count = $ret[1];
 354                         $returned_feed = $ret[2];
 355                         $disable_cache = $ret[3];
 356                         $vgroup_last_feed = $ret[4];
 357
 358                         $reply['headlines']['content'] = $ret[5];
 359                         $reply['headlines']['toolbar'] = $ret[6];
 360
 361                         if ($_REQUEST["debug"]) $timing_info = print_checkpoint("05", $timing_info);
 362
 363                         $headlines_unread = ccache_find($link, $returned_feed, $_SESSION["uid"],
 364                                         $cat_view, true);
 365
 366                         if ($headlines_unread == -1) {
 367                                 $headlines_unread = getFeedUnread($link, $returned_feed, $cat_view);
 368                         }
 369
 370                         $reply['headlines-info'] = array("count" => (int) $headlines_count,
 371                                 "vgroup_last_feed" => $vgroup_last_feed,
 372                                 "unread" => (int) $headlines_unread,
 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, $feed, 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($reply);
 396
 397                 break; // viewfeed
 398
 399                 case "pref-feeds":
 400                         module_pref_feeds($link);
 401                 break; // pref-feeds
 402
 403                 case "pref-filters":
 404                         module_pref_filters($link);
 405                 break; // pref-filters
 406
 407                 case "pref-labels":
 408                         module_pref_labels($link);
 409                 break; // pref-labels
 410
 411                 case "pref-prefs":
 412                         module_pref_prefs($link);
 413                 break; // pref-prefs
 414
 415                 case "pref-users":
 416                         module_pref_users($link);
 417                 break; // prefs-users
 418
 419                 case "help":
 420                         module_help($link);
 421                 break; // help
 422
 423                 case "dlg":
 424                         module_popup_dialog($link);
 425                 break; // dlg
 426
 427                 case "pref-pub-items":
 428                         module_pref_pub_items($link);
 429                 break; // pref-pub-items
 430
 431                 case "globalUpdateFeeds":
 432                         // Update all feeds needing a update.
 433                         update_daemon_common($link, 0, true, true);
 434                 break; // globalUpdateFeeds
 435
 436                 case "pref-feed-browser":
 437                         module_pref_feed_browser($link);
 438                 break; // pref-feed-browser
 439
 440                 case "pref-instances":
 441                         module_pref_instances($link);
 442                 break; // pref-instances
 443
 444                 case "rss":
 445                         $feed = db_escape_string($_REQUEST["id"]);
 446                         $key = db_escape_string($_REQUEST["key"]);
 447                         $is_cat = $_REQUEST["is_cat"] != false;
 448                         $limit = (int)db_escape_string($_REQUEST["limit"]);
 449
 450                         $search = db_escape_string($_REQUEST["q"]);
 451                         $match_on = db_escape_string($_REQUEST["m"]);
 452                         $search_mode = db_escape_string($_REQUEST["smode"]);
 453                         $view_mode = db_escape_string($_REQUEST["view-mode"]);
 454
 455                         if (SINGLE_USER_MODE) {
 456                                 authenticate_user($link, "admin", null);
 457                         }
 458
 459                         $owner_id = false;
 460
 461                         if ($key) {
 462                                 $result = db_query($link, "SELECT owner_uid FROM
 463                                         ttrss_access_keys WHERE access_key = '$key' AND feed_id = '$feed'");
 464
 465                                 if (db_num_rows($result) == 1)
 466                                         $owner_id = db_fetch_result($result, 0, "owner_uid");
 467                         }
 468
 469                         if ($owner_id) {
 470                                 $_SESSION['uid'] = $owner_id;
 471
 472                                 generate_syndicated_feed($link, 0, $feed, $is_cat, $limit,
 473                                         $search, $search_mode, $match_on, $view_mode);
 474                         } else {
 475                                 header('HTTP/1.1 403 Forbidden');
 476                         }
 477                 break; // rss
 478
 479                 case "getUnread":
 480                         $login = db_escape_string($_REQUEST["login"]);
 481                         $fresh = $_REQUEST["fresh"] == "1";
 482
 483                         $result = db_query($link, "SELECT id FROM ttrss_users WHERE login = '$login'");
 484
 485                         if (db_num_rows($result) == 1) {
 486                                 $uid = db_fetch_result($result, 0, "id");
 487
 488                                 print getGlobalUnread($link, $uid);
 489
 490                                 if ($fresh) {
 491                                         print ";";
 492                                         print getFeedArticles($link, -3, false, true, $uid);
 493                                 }
 494
 495                         } else {
 496                                 print "-1;User not found";
 497                         }
 498
 499                 break; // getUnread
 500
 501                 case "digestTest":
 502                         print_r(prepare_headlines_digest($link, $_SESSION["uid"]));
 503                 break; // digestTest
 504
 505                 case "digestSend":
 506                         send_headlines_digests($link);
 507                 break; // digestSend
 508
 509                 case "loading":
 510                         header("Content-type: text/html");
 511                         print __("Loading, please wait...") . " " .
 512                                 "<img src='images/indicator_tiny.gif'>";
 513                 break; // loading
 514
 515                 case "getProfiles":
 516                         $login = db_escape_string($_REQUEST["login"]);
 517                         $password = db_escape_string($_REQUEST["password"]);
 518
 519                         if (authenticate_user($link, $login, $password)) {
 520                                 $result = db_query($link, "SELECT * FROM ttrss_settings_profiles
 521                                         WHERE owner_uid = " . $_SESSION["uid"] . " ORDER BY title");
 522
 523                                 print "<select style='width: 100%' name='profile'>";
 524
 525                                 print "<option value='0'>" . __("Default profile") . "</option>";
 526
 527                                 while ($line = db_fetch_assoc($result)) {
 528                                         $id = $line["id"];
 529                                         $title = $line["title"];
 530
 531                                         print "<option value='$id'>$title</option>";
 532                                 }
 533
 534                                 print "</select>";
 535
 536                                 $_SESSION = array();
 537                         }
 538                 break; // getprofiles
 539
 540                 case "pubsub":
 541                         $mode = db_escape_string($_REQUEST['hub_mode']);
 542                         $feed_id = db_escape_string($_REQUEST['id']);
 543                         $feed_url = db_escape_string($_REQUEST['hub_topic']);
 544
 545                         // TODO: implement hub_verifytoken checking
 546
 547                         $result = db_query($link, "SELECT feed_url FROM ttrss_feeds
 548                                 WHERE id = '$feed_id'");
 549
 550                         $check_feed_url = db_fetch_result($result, 0, "feed_url");
 551
 552                         if ($check_feed_url && ($check_feed_url == $feed_url || !$feed_url)) {
 553                                 if ($mode == "subscribe") {
 554
 555                                         db_query($link, "UPDATE ttrss_feeds SET pubsub_state = 2
 556                                                 WHERE id = '$feed_id'");
 557
 558                                         print $_REQUEST['hub_challenge'];
 559                                         return;
 560
 561                                 } else if ($mode == "unsubscribe") {
 562
 563                                         db_query($link, "UPDATE ttrss_feeds SET pubsub_state = 0
 564                                                 WHERE id = '$feed_id'");
 565
 566                                         print $_REQUEST['hub_challenge'];
 567                                         return;
 568
 569                                 } else if (!$mode) {
 570
 571                                         // Received update ping, schedule feed update.
 572
 573                                         update_rss_feed($link, $feed_id, true, true);
 574
 575                                 }
 576                         } else {
 577                                 header('HTTP/1.0 404 Not Found');
 578                         }
 579
 580                 break; // pubsub
 581
 582                 case "logout":
 583                         logout_user();
 584                         header("Location: tt-rss.php");
 585                 break; // logout
 586
 587                 case "fbexport":
 588
 589                         $access_key = db_escape_string($_POST["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, site_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
 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 ?>