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 != "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
 125         $error = sanity_check($link);
 126
 127         if ($error['code'] != 0) {
 128                 print json_encode(array("error" => $error));
 129                 return;
 130         }
 131
 132         switch($op) { // Select action according to $op value.
 133                 case "rpc":
 134                         // Handle remote procedure calls.
 135                         handle_rpc_request($link);
 136                 break; // rpc
 137
 138                 case "feeds":
 139                         $subop = $_REQUEST["subop"];
 140                         $root = (bool)$_REQUEST["root"];
 141
 142                         switch($subop) {
 143                                 case "catchupAll":
 144                                         db_query($link, "UPDATE ttrss_user_entries SET
 145                                                 last_read = NOW(),unread = false WHERE owner_uid = " . $_SESSION["uid"]);
 146                                         ccache_zero_all($link, $_SESSION["uid"]);
 147
 148                                 break;
 149
 150                                 case "collapse":
 151                                         $cat_id = db_escape_string($_REQUEST["cid"]);
 152                                         $mode = (int) db_escape_string($_REQUEST['mode']);
 153                                         toggle_collapse_cat($link, $cat_id, $mode);
 154                                         return;
 155                                 break;
 156                         }
 157
 158                         if (!$root) {
 159                                 print json_encode(outputFeedList($link));
 160                         } else {
 161
 162                                 $feeds = outputFeedList($link, false);
 163
 164                                 $root = array();
 165                                 $root['id'] = 'root';
 166                                 $root['name'] = __('Feeds');
 167                                 $root['items'] = $feeds['items'];
 168
 169                                 $fl = array();
 170                                 $fl['identifier'] = 'id';
 171                                 $fl['label'] = 'name';
 172                                 $fl['items'] = array($root);
 173
 174                                 print json_encode($fl);
 175                         }
 176
 177                 break; // feeds
 178
 179                 case "la":
 180                         $id = db_escape_string($_REQUEST['id']);
 181
 182                         $result = db_query($link, "SELECT link FROM ttrss_entries, ttrss_user_entries
 183                                 WHERE id = '$id' AND id = ref_id AND owner_uid = '".$_SESSION['uid']."'");
 184
 185                         if (db_num_rows($result) == 1) {
 186                                 $article_url = db_fetch_result($result, 0, 'link');
 187                                 $article_url = str_replace("\n", "", $article_url);
 188
 189                                 header("Location: $article_url");
 190                                 return;
 191
 192                         } else {
 193                                 print_error(__("Article not found."));
 194                         }
 195                 break;
 196
 197                 case "view":
 198
 199                         $id = db_escape_string($_REQUEST["id"]);
 200                         $cids = split(",", db_escape_string($_REQUEST["cids"]));
 201                         $mode = db_escape_string($_REQUEST["mode"]);
 202                         $omode = db_escape_string($_REQUEST["omode"]);
 203
 204                         // in prefetch mode we only output requested cids, main article
 205                         // just gets marked as read (it already exists in client cache)
 206
 207                         $articles = array();
 208
 209                         if ($mode == "") {
 210                                 array_push($articles, format_article($link, $id, false));
 211                         } else if ($mode == "zoom") {
 212                                 array_push($articles, format_article($link, $id, false, true, true));
 213                         } else if ($mode == "raw") {
 214                                 if ($_REQUEST['html']) header("Content-Type: text/html");
 215
 216                                 $article = format_article($link, $id, false);
 217                                 print $article['id'] . "\n\n";
 218                                 print $article['content'];
 219                                 return;
 220                         } else {
 221                                 catchupArticleById($link, $id, 0);
 222                         }
 223
 224                         if (!$_SESSION["bw_limit"]) {
 225                                 foreach ($cids as $cid) {
 226                                         if ($cid) {
 227                                                 array_push($articles, format_article($link, $cid, false, false));
 228                                         }
 229                                 }
 230                         }
 231
 232                         print json_encode($articles);
 233
 234                 break; // view
 235
 236                 case "viewfeed":
 237
 238                         $timing_info = getmicrotime();
 239
 240                         $reply = array();
 241
 242                         if ($_REQUEST["debug"]) $timing_info = print_checkpoint("0", $timing_info);
 243
 244                         $omode = db_escape_string($_REQUEST["omode"]);
 245
 246                         $feed = db_escape_string($_REQUEST["feed"]);
 247                         $subop = db_escape_string($_REQUEST["subop"]);
 248                         $view_mode = db_escape_string($_REQUEST["view_mode"]);
 249                         $limit = (int) get_pref($link, "DEFAULT_ARTICLE_LIMIT");
 250                         @$cat_view = db_escape_string($_REQUEST["cat"]);
 251                         @$next_unread_feed = db_escape_string($_REQUEST["nuf"]);
 252                         @$offset = db_escape_string($_REQUEST["skip"]);
 253                         @$vgroup_last_feed = db_escape_string($_REQUEST["vgrlf"]);
 254                         $order_by = db_escape_string($_REQUEST["order_by"]);
 255
 256                         /* Feed -5 is a special case: it is used to display auxiliary information
 257                          * when there's nothing to load - e.g. no stuff in fresh feed */
 258
 259                         if ($feed == -5) {
 260                                 print json_encode(generate_dashboard_feed($link));
 261                                 return;
 262                         }
 263
 264                         $result = false;
 265
 266                         if ($feed < -10) {
 267                                 $label_feed = -11-$feed;
 268                                 $result = db_query($link, "SELECT id FROM ttrss_labels2 WHERE
 269                                         id = '$label_feed' AND owner_uid = " . $_SESSION['uid']);
 270                         } else if (!$cat_view && $feed > 0) {
 271                                 $result = db_query($link, "SELECT id FROM ttrss_feeds WHERE
 272                                         id = '$feed' AND owner_uid = " . $_SESSION['uid']);
 273                         } else if ($cat_view && $feed > 0) {
 274                                 $result = db_query($link, "SELECT id FROM ttrss_feed_categories WHERE
 275                                         id = '$feed' AND owner_uid = " . $_SESSION['uid']);
 276                         }
 277
 278                         if ($result && db_num_rows($result) == 0) {
 279                                 print json_encode(generate_error_feed($link, __("Feed not found.")));
 280                                 return;
 281                         }
 282
 283                         /* Updating a label ccache means recalculating all of the caches
 284                          * so for performance reasons we don't do that here */
 285
 286                         if ($feed >= 0) {
 287                                 ccache_update($link, $feed, $_SESSION["uid"], $cat_view);
 288                         }
 289
 290                         set_pref($link, "_DEFAULT_VIEW_MODE", $view_mode);
 291                         set_pref($link, "_DEFAULT_VIEW_LIMIT", $limit);
 292                         set_pref($link, "_DEFAULT_VIEW_ORDER_BY", $order_by);
 293
 294                         if (!$cat_view && preg_match("/^[0-9][0-9]*$/", $feed)) {
 295                                 db_query($link, "UPDATE ttrss_feeds SET last_viewed = NOW()
 296                                         WHERE id = '$feed' AND owner_uid = ".$_SESSION["uid"]);
 297                         }
 298
 299                         $reply['headlines'] = array();
 300
 301                         if (!$next_unread_feed)
 302                                 $reply['headlines']['id'] = $feed;
 303                         else
 304                                 $reply['headlines']['id'] = $next_unread_feed;
 305
 306                         $reply['headlines']['is_cat'] = (bool) $cat_view;
 307
 308                         $override_order = false;
 309
 310                         if (get_pref($link, "SORT_HEADLINES_BY_FEED_DATE", $owner_uid)) {
 311                                 $date_sort_field = "updated";
 312                         } else {
 313                                 $date_sort_field = "date_entered";
 314                         }
 315
 316                         switch ($order_by) {
 317                                 case "date":
 318                                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
 319                                                 $override_order = "$date_sort_field";
 320                                         } else {
 321                                                 $override_order = "$date_sort_field DESC";
 322                                         }
 323                                         break;
 324
 325                                 case "title":
 326                                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
 327                                                 $override_order = "title DESC, $date_sort_field";
 328                                         } else {
 329                                                 $override_order = "title, $date_sort_field DESC";
 330                                         }
 331                                         break;
 332
 333                                 case "score":
 334                                         if (get_pref($link, 'REVERSE_HEADLINES', $owner_uid)) {
 335                                                 $override_order = "score, $date_sort_field";
 336                                         } else {
 337                                                 $override_order = "score DESC, $date_sort_field DESC";
 338                                         }
 339                                         break;
 340                         }
 341
 342                         if ($_REQUEST["debug"]) $timing_info = print_checkpoint("04", $timing_info);
 343
 344                         $ret = format_headlines_list($link, $feed, $subop,
 345                                 $view_mode, $limit, $cat_view, $next_unread_feed, $offset,
 346                                 $vgroup_last_feed, $override_order);
 347
 348                         $topmost_article_ids = $ret[0];
 349                         $headlines_count = $ret[1];
 350                         $returned_feed = $ret[2];
 351                         $disable_cache = $ret[3];
 352                         $vgroup_last_feed = $ret[4];
 353
 354                         $reply['headlines']['content'] = $ret[5];
 355                         $reply['headlines']['toolbar'] = $ret[6];
 356
 357                         if ($_REQUEST["debug"]) $timing_info = print_checkpoint("05", $timing_info);
 358
 359                         $headlines_unread = ccache_find($link, $returned_feed, $_SESSION["uid"],
 360                                         $cat_view, true);
 361
 362                         if ($headlines_unread == -1) {
 363                                 $headlines_unread = getFeedUnread($link, $returned_feed, $cat_view);
 364                         }
 365
 366                         $reply['headlines-info'] = array("count" => (int) $headlines_count,
 367                                 "vgroup_last_feed" => $vgroup_last_feed,
 368                                 "unread" => (int) $headlines_unread,
 369                                 "disable_cache" => (bool) $disable_cache);
 370
 371                         if ($_REQUEST["debug"]) $timing_info = print_checkpoint("20", $timing_info);
 372
 373                         if (is_array($topmost_article_ids) && !get_pref($link, 'COMBINED_DISPLAY_MODE') && !$_SESSION["bw_limit"]) {
 374                                 $articles = array();
 375
 376                                 foreach ($topmost_article_ids as $id) {
 377                                         array_push($articles, format_article($link, $id, $feed, false));
 378                                 }
 379
 380                                 $reply['articles'] = $articles;
 381                         }
 382
 383                         if ($subop) {
 384                                 $reply['counters'] = getAllCounters($link, $omode, $feed);
 385                         }
 386
 387                         if ($_REQUEST["debug"]) $timing_info = print_checkpoint("30", $timing_info);
 388
 389                         $reply['runtime-info'] = make_runtime_info($link);
 390
 391                         print json_encode($reply);
 392
 393                 break; // viewfeed
 394
 395                 case "pref-feeds":
 396                         module_pref_feeds($link);
 397                 break; // pref-feeds
 398
 399                 case "pref-filters":
 400                         module_pref_filters($link);
 401                 break; // pref-filters
 402
 403                 case "pref-labels":
 404                         module_pref_labels($link);
 405                 break; // pref-labels
 406
 407                 case "pref-prefs":
 408                         module_pref_prefs($link);
 409                 break; // pref-prefs
 410
 411                 case "pref-users":
 412                         module_pref_users($link);
 413                 break; // prefs-users
 414
 415                 case "help":
 416                         module_help($link);
 417                 break; // help
 418
 419                 case "dlg":
 420                         module_popup_dialog($link);
 421                 break; // dlg
 422
 423                 case "pref-pub-items":
 424                         module_pref_pub_items($link);
 425                 break; // pref-pub-items
 426
 427                 case "globalUpdateFeeds":
 428                         // Update all feeds needing a update.
 429                         update_daemon_common($link, 0, true, true);
 430                 break; // globalUpdateFeeds
 431
 432                 case "pref-feed-browser":
 433                         module_pref_feed_browser($link);
 434                 break; // pref-feed-browser
 435
 436                 case "rss":
 437                         $feed = db_escape_string($_REQUEST["id"]);
 438                         $key = db_escape_string($_REQUEST["key"]);
 439                         $is_cat = $_REQUEST["is_cat"] != false;
 440                         $limit = (int)db_escape_string($_REQUEST["limit"]);
 441
 442                         $search = db_escape_string($_REQUEST["q"]);
 443                         $match_on = db_escape_string($_REQUEST["m"]);
 444                         $search_mode = db_escape_string($_REQUEST["smode"]);
 445                         $view_mode = db_escape_string($_REQUEST["view-mode"]);
 446
 447                         if (SINGLE_USER_MODE) {
 448                                 authenticate_user($link, "admin", null);
 449                         }
 450
 451                         $owner_id = false;
 452
 453                         if ($key) {
 454                                 $result = db_query($link, "SELECT owner_uid FROM
 455                                         ttrss_access_keys WHERE access_key = '$key' AND feed_id = '$feed'");
 456
 457                                 if (db_num_rows($result) == 1)
 458                                         $owner_id = db_fetch_result($result, 0, "owner_uid");
 459                         }
 460
 461                         if ($owner_id) {
 462                                 $_SESSION['uid'] = $owner_id;
 463
 464                                 generate_syndicated_feed($link, 0, $feed, $is_cat, $limit,
 465                                         $search, $search_mode, $match_on, $view_mode);
 466                         } else {
 467                                 header('HTTP/1.1 403 Forbidden');
 468                         }
 469                 break; // rss
 470
 471                 case "getUnread":
 472                         $login = db_escape_string($_REQUEST["login"]);
 473                         $fresh = $_REQUEST["fresh"] == "1";
 474
 475                         $result = db_query($link, "SELECT id FROM ttrss_users WHERE login = '$login'");
 476
 477                         if (db_num_rows($result) == 1) {
 478                                 $uid = db_fetch_result($result, 0, "id");
 479
 480                                 print getGlobalUnread($link, $uid);
 481
 482                                 if ($fresh) {
 483                                         print ";";
 484                                         print getFeedArticles($link, -3, false, true, $uid);
 485                                 }
 486
 487                         } else {
 488                                 print "-1;User not found";
 489                         }
 490
 491                 break; // getUnread
 492
 493                 case "digestTest":
 494                         print_r(prepare_headlines_digest($link, $_SESSION["uid"]));
 495                 break; // digestTest
 496
 497                 case "digestSend":
 498                         send_headlines_digests($link);
 499                 break; // digestSend
 500
 501                 case "loading":
 502                         print __("Loading, please wait...") . " " .
 503                                 "<img src='images/indicator_tiny.gif'>";
 504
 505                 case "getProfiles":
 506                         $login = db_escape_string($_REQUEST["login"]);
 507                         $password = db_escape_string($_REQUEST["password"]);
 508
 509                         if (authenticate_user($link, $login, $password)) {
 510                                 $result = db_query($link, "SELECT * FROM ttrss_settings_profiles
 511                                         WHERE owner_uid = " . $_SESSION["uid"] . " ORDER BY title");
 512
 513                                 print "<select style='width: 100%' name='profile'>";
 514
 515                                 print "<option value='0'>" . __("Default profile") . "</option>";
 516
 517                                 while ($line = db_fetch_assoc($result)) {
 518                                         $id = $line["id"];
 519                                         $title = $line["title"];
 520
 521                                         print "<option value='$id'>$title</option>";
 522                                 }
 523
 524                                 print "</select>";
 525
 526                                 $_SESSION = array();
 527                         }
 528                 break;
 529
 530                 case "pubsub":
 531                         $mode = db_escape_string($_REQUEST['hub_mode']);
 532                         $feed_id = db_escape_string($_REQUEST['id']);
 533                         $feed_url = db_escape_string($_REQUEST['hub_topic']);
 534
 535                         // TODO: implement hub_verifytoken checking
 536
 537                         $result = db_query($link, "SELECT feed_url FROM ttrss_feeds
 538                                 WHERE id = '$feed_id'");
 539
 540                         $check_feed_url = db_fetch_result($result, 0, "feed_url");
 541
 542                         if ($check_feed_url && ($check_feed_url == $feed_url || !$feed_url)) {
 543                                 if ($mode == "subscribe") {
 544
 545                                         db_query($link, "UPDATE ttrss_feeds SET pubsub_state = 2
 546                                                 WHERE id = '$feed_id'");
 547
 548                                         print $_REQUEST['hub_challenge'];
 549                                         return;
 550
 551                                 } else if ($mode == "unsubscribe") {
 552
 553                                         db_query($link, "UPDATE ttrss_feeds SET pubsub_state = 0
 554                                                 WHERE id = '$feed_id'");
 555
 556                                         print $_REQUEST['hub_challenge'];
 557                                         return;
 558
 559                                 } else if (!$mode) {
 560
 561                                         // Received update ping, schedule feed update.
 562
 563                                         update_rss_feed($link, $feed_id, true, true);
 564
 565                                 }
 566                         } else {
 567                                 header('HTTP/1.0 404 Not Found');
 568                         }
 569
 570                 break;
 571         } // Select action according to $op value.
 572
 573         // We close the connection to database.
 574         db_close($link);
 575 ?>