netwerk/dns/PlatformDNSUnix.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim:set ts=4 sw=2 sts=2 et cin: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "GetAddrInfo.h"
   8 #include "mozilla/net/DNSPacket.h"
   9 #include "nsIDNSService.h"
  10 #include "mozilla/Maybe.h"
  11
  12 #include <stdio.h>
  13 #include <stdlib.h>
  14 #include <string.h>
  15 #include <netinet/in.h>
  16 #include <resolv.h>
  17
  18 namespace mozilla::net {
  19
  20 #define LOG(msg, ...) \
  21   MOZ_LOG(gGetAddrInfoLog, LogLevel::Debug, ("[DNS]: " msg, ##__VA_ARGS__))
  22
  23 nsresult ResolveHTTPSRecordImpl(const nsACString& aHost, uint16_t aFlags,
  24                                 TypeRecordResultType& aResult, uint32_t& aTTL) {
  25   DNSPacket packet;
  26   nsAutoCString host(aHost);
  27   nsAutoCString cname;
  28   nsresult rv;
  29
  30   LOG("resolving %s\n", host.get());
  31   // Perform the query
  32   rv = packet.FillBuffer(
  33       [&](unsigned char response[DNSPacket::MAX_SIZE]) -> int {
  34         int len = 0;
  35 #if defined(XP_LINUX)
  36         len = res_nquery(&_res, host.get(), ns_c_in,
  37                          nsIDNSService::RESOLVE_TYPE_HTTPSSVC, response,
  38                          DNSPacket::MAX_SIZE);
  39 #elif defined(XP_MACOSX)
  40         len =
  41             res_query(host.get(), ns_c_in, nsIDNSService::RESOLVE_TYPE_HTTPSSVC,
  42                       response, DNSPacket::MAX_SIZE);
  43 #endif
  44
  45         if (len < 0) {
  46           LOG("DNS query failed");
  47         }
  48         return len;
  49       });
  50   if (NS_FAILED(rv)) {
  51     return rv;
  52   }
  53
  54   return ParseHTTPSRecord(host, packet, aResult, aTTL);
  55 }
  56
  57 }  // namespace mozilla::net