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         if (ENABLE_TRANSLATIONS == true) {
  28                 startup_gettext();
  29         }
  30
  31         $script_started = getmicrotime();
  32
  33         $link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME);
  34
  35         if (!$link) {
  36                 if (DB_TYPE == "mysql") {
  37                         print mysql_error();
  38                 }
  39                 // PG seems to display its own errors just fine by default.
  40                 return;
  41         }
  42
  43         init_connection($link);
  44
  45         $op = $_REQUEST["op"];
  46         $subop = $_REQUEST["subop"];
  47         $mode = $_REQUEST["mode"];
  48
  49         $print_exec_time = false;
  50
  51         if ((!$op || $op == "rpc" || $op == "rss" ||
  52                         $op == "digestSend" || $op == "dlg" ||
  53                         $op == "globalUpdateFeeds") && !$_REQUEST["noxml"]) {
  54                                 header("Content-Type: application/xml; charset=utf-8");
  55
  56                 } else {
  57                 if (!$_REQUEST["noxml"]) {
  58                         header("Content-Type: text/html; charset=utf-8");
  59                 } else {
  60                         header("Content-Type: text/plain; charset=utf-8");
  61                 }
  62         }
  63
  64         if (ENABLE_GZIP_OUTPUT) {
  65                 ob_start("ob_gzhandler");
  66         }
  67
  68         if (SINGLE_USER_MODE) {
  69                 authenticate_user($link, "admin", null);
  70         }
  71
  72         if (!($_SESSION["uid"] && validate_session($link)) && $op != "globalUpdateFeeds" &&
  73                                 $op != "rss" && $op != "getUnread" && $op != "getProfiles") {
  74
  75                 header("Content-Type: text/plain");
  76                 print json_encode(array("error" => array("code" => 6)));
  77                 return;
  78         }
  79
  80         $purge_intervals = array(
  81                 0  => __("Use default"),
  82                 -1 => __("Never purge"),
  83                 5  => __("1 week old"),
  84                 14 => __("2 weeks old"),
  85                 31 => __("1 month old"),
  86                 60 => __("2 months old"),
  87                 90 => __("3 months old"));
  88
  89         $update_intervals = array(
  90                 0   => __("Default interval"),
  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_intervals_nodefault = array(
 101                 -1  => __("Disable updates"),
 102                 15  => __("Each 15 minutes"),
 103                 30  => __("Each 30 minutes"),
 104                 60  => __("Hourly"),
 105                 240 => __("Each 4 hours"),
 106                 720 => __("Each 12 hours"),
 107                 1440 => __("Daily"),
 108                 10080 => __("Weekly"));
 109
 110         $update_methods = array(
 111                 0   => __("Default"),
 112                 1   => __("Magpie"),
 113                 2   => __("SimplePie"),
 114                 3   => __("Twitter OAuth"));
 115
 116         if (DEFAULT_UPDATE_METHOD == "1") {
 117                 $update_methods[0] .= ' (SimplePie)';
 118         } else {
 119                 $update_methods[0] .= ' (Magpie)';
 120         }
 121
 122         $access_level_names = array(
 123                 0 => __("User"),
 124                 5 => __("Power User"),
 125                 10 => __("Administrator"));
 126
 127         require_once "modules/pref-prefs.php";
 128         require_once "modules/popup-dialog.php";
 129         require_once "modules/help.php";
 130         require_once "modules/pref-feeds.php";
 131         require_once "modules/pref-filters.php";
 132         require_once "modules/pref-labels.php";
 133         require_once "modules/pref-users.php";
 134
 135         $error = sanity_check($link);
 136
 137         if ($error['code'] != 0) {
 138                 print json_encode(array("error" => $error));
 139                 return;
 140         }
 141
 142         switch($op) { // Select action according to $op value.
 143                 case "rpc":
 144                         // Handle remote procedure calls.
 145                         handle_rpc_request($link);
 146                 break; // rpc
 147
 148                 case "feeds":
 149                         $subop = $_REQUEST["subop"];
 150                         $root = (bool)$_REQUEST["root"];
 151
 152                         switch($subop) {
 153                                 case "catchupAll":
 154                                         db_query($link, "UPDATE ttrss_user_entries SET
 155                                                 last_read = NOW(),unread = false WHERE owner_uid = " . $_SESSION["uid"]);
 156                                         ccache_zero_all($link, $_SESSION["uid"]);
 157
 158                                 break;
 159
 160                                 case "collapse":
 161                                         $cat_id = db_escape_string($_REQUEST["cid"]);
 162                                         $mode = (int) db_escape_string($_REQUEST['mode']);
 163                                         toggle_collapse_cat($link, $cat_id, $mode);
 164                                         return;
 165                                 break;
 166                         }
 167
 168                         if (!$root) {
 169                                 print json_encode(outputFeedList($link));
 170                         } else {
 171
 172                                 $feeds = outputFeedList($link, false);
 173
 174                                 $root = array();
 175                                 $root['id'] = 'root';
 176                                 $root['name'] = __('Feeds');
 177                                 $root['items'] = $feeds['items'];
 178
 179                                 $fl = array();
 180                                 $fl['identifier'] = 'id';
 181                                 $fl['label'] = 'name';
 182                                 $fl['items'] = array($root);
 183
 184                                 print json_encode($fl);
 185                         }
 186
 187                 break; // feeds
 188
 189                 case "la":
 190                         $id = db_escape_string($_REQUEST['id']);
 191
 192                         $result = db_query($link, "SELECT link FROM ttrss_entries, ttrss_user_entries
 193                                 WHERE id = '$id' AND id = ref_id AND owner_uid = '".$_SESSION['uid']."'");
 194
 195                         if (db_num_rows($result) == 1) {
 196                                 $article_url = db_fetch_result($result, 0, 'link');
 197                                 $article_url = str_replace("\n", "", $article_url);
 198
 199                                 header("Location: $article_url");
 200                                 return;
 201
 202                         } else {
 203                                 print_error(__("Article not found."));
 204                         }
 205                 break;
 206
 207                 case "view":
 208
 209                         $id = db_escape_string($_REQUEST["id"]);
 210                         $cids = split(",", db_escape_string($_REQUEST["cids"]));
 211                         $mode = db_escape_string($_REQUEST["mode"]);
 212                         $omode = db_escape_string($_REQUEST["omode"]);
 213
 214                         // in prefetch mode we only output requested cids, main article
 215                         // just gets marked as read (it already exists in client cache)
 216
 217                         $articles = array();
 218
 219                         if ($mode == "") {
 220                                 array_push($articles, format_article($link, $id, false));
 221                         } else if ($mode == "zoom") {
 222                                 array_push($articles, format_article($link, $id, false, true, true));
 223                         } else {
 224                                 catchupArticleById($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($link);
 428                 break; // pref-pub-items
 429
 430                 case "globalUpdateFeeds":
 431                         // update feeds of all users, may be used anonymously
 432
 433                         print "<!--";
 434                         // Update all feeds needing a update.
 435                         update_daemon_common($link, 0, true, true);
 436                         print " -->";
 437
 438                         print "<rpc-reply>
 439                                 <message msg=\"All feeds updated\"/>
 440                         </rpc-reply>";
 441                 break; // globalUpdateFeeds
 442
 443                 case "pref-feed-browser":
 444                         module_pref_feed_browser($link);
 445                 break; // pref-feed-browser
 446
 447                 case "rss":
 448                         $feed = db_escape_string($_REQUEST["id"]);
 449                         $key = db_escape_string($_REQUEST["key"]);
 450                         $is_cat = $_REQUEST["is_cat"] != false;
 451                         $limit = (int)db_escape_string($_REQUEST["limit"]);
 452
 453                         $search = db_escape_string($_REQUEST["q"]);
 454                         $match_on = db_escape_string($_REQUEST["m"]);
 455                         $search_mode = db_escape_string($_REQUEST["smode"]);
 456                         $view_mode = db_escape_string($_REQUEST["view-mode"]);
 457
 458                         if (SINGLE_USER_MODE) {
 459                                 authenticate_user($link, "admin", null);
 460                         }
 461
 462                         $owner_id = false;
 463
 464                         if ($key) {
 465                                 $result = db_query($link, "SELECT owner_uid FROM
 466                                         ttrss_access_keys WHERE access_key = '$key' AND feed_id = '$feed'");
 467
 468                                 if (db_num_rows($result) == 1)
 469                                         $owner_id = db_fetch_result($result, 0, "owner_uid");
 470                         }
 471
 472                         if ($owner_id) {
 473                                 $_SESSION['uid'] = $owner_id;
 474
 475                                 generate_syndicated_feed($link, 0, $feed, $is_cat, $limit,
 476                                         $search, $search_mode, $match_on, $view_mode);
 477                         } else {
 478                                 header('HTTP/1.1 403 Forbidden');
 479                         }
 480                 break; // rss
 481
 482                 case "getUnread":
 483                         $login = db_escape_string($_REQUEST["login"]);
 484                         $fresh = $_REQUEST["fresh"] == "1";
 485
 486                         header("Content-Type: text/plain; charset=utf-8");
 487
 488                         $result = db_query($link, "SELECT id FROM ttrss_users WHERE login = '$login'");
 489
 490                         if (db_num_rows($result) == 1) {
 491                                 $uid = db_fetch_result($result, 0, "id");
 492
 493                                 print getGlobalUnread($link, $uid);
 494
 495                                 if ($fresh) {
 496                                         print ";";
 497                                         print getFeedArticles($link, -3, false, true, $uid);
 498                                 }
 499
 500                         } else {
 501                                 print "-1;User not found";
 502                         }
 503
 504                         $print_exec_time = false;
 505                 break; // getUnread
 506
 507                 case "digestTest":
 508                         header("Content-Type: text/plain");
 509                         print_r(prepare_headlines_digest($link, $_SESSION["uid"]));
 510                         $print_exec_time = false;
 511                 break; // digestTest
 512
 513                 case "digestSend":
 514                         header("Content-Type: text/plain");
 515                         send_headlines_digests($link);
 516                         $print_exec_time = false;
 517                 break; // digestSend
 518
 519                 case "loading":
 520                         print __("Loading, please wait...") . " " .
 521                                 "<img src='images/indicator_tiny.gif'>";
 522
 523                 case "getProfiles":
 524                         $login = db_escape_string($_REQUEST["login"]);
 525                         $password = db_escape_string($_REQUEST["password"]);
 526
 527                         if (authenticate_user($link, $login, $password)) {
 528                                 $result = db_query($link, "SELECT * FROM ttrss_settings_profiles
 529                                         WHERE owner_uid = " . $_SESSION["uid"] . " ORDER BY title");
 530
 531                                 print "<select style='width: 100%' name='profile'>";
 532
 533                                 print "<option value='0'>" . __("Default profile") . "</option>";
 534
 535                                 while ($line = db_fetch_assoc($result)) {
 536                                         $id = $line["id"];
 537                                         $title = $line["title"];
 538
 539                                         print "<option value='$id'>$title</option>";
 540                                 }
 541
 542                                 print "</select>";
 543
 544                                 $_SESSION = array();
 545                         }
 546                 break;
 547
 548         } // Select action according to $op value.
 549
 550
 551         // We close the connection to database.
 552         db_close($link);
 553 ?>
 554
 555 <?php if ($print_exec_time) { ?>
 556 <!-- <?php echo sprintf("Backend execution time: %.4f seconds", getmicrotime() - $script_started) ?> -->
 557 <?php } ?>