net/dns/mapped_host_resolver.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "net/dns/mapped_host_resolver.h"
   6
   7 #include "base/string_util.h"
   8 #include "net/base/host_port_pair.h"
   9 #include "net/base/net_errors.h"
  10 #include "net/base/net_util.h"
  11
  12 namespace net {
  13
  14 MappedHostResolver::MappedHostResolver(scoped_ptr<HostResolver> impl)
  15     : impl_(impl.Pass()) {
  16 }
  17
  18 MappedHostResolver::~MappedHostResolver() {
  19 }
  20
  21 int MappedHostResolver::Resolve(const RequestInfo& original_info,
  22                                 AddressList* addresses,
  23                                 const CompletionCallback& callback,
  24                                 RequestHandle* out_req,
  25                                 const BoundNetLog& net_log) {
  26   RequestInfo info = original_info;
  27   int rv = ApplyRules(&info);
  28   if (rv != OK)
  29     return rv;
  30
  31   return impl_->Resolve(info, addresses, callback, out_req, net_log);
  32 }
  33
  34 int MappedHostResolver::ResolveFromCache(const RequestInfo& original_info,
  35                                          AddressList* addresses,
  36                                          const BoundNetLog& net_log) {
  37   RequestInfo info = original_info;
  38   int rv = ApplyRules(&info);
  39   if (rv != OK)
  40     return rv;
  41
  42   return impl_->ResolveFromCache(info, addresses, net_log);
  43 }
  44
  45 void MappedHostResolver::CancelRequest(RequestHandle req) {
  46   impl_->CancelRequest(req);
  47 }
  48
  49 void MappedHostResolver::ProbeIPv6Support() {
  50   impl_->ProbeIPv6Support();
  51 }
  52
  53 HostCache* MappedHostResolver::GetHostCache() {
  54   return impl_->GetHostCache();
  55 }
  56
  57 int MappedHostResolver::ApplyRules(RequestInfo* info) const {
  58   HostPortPair host_port(info->host_port_pair());
  59   if (rules_.RewriteHost(&host_port)) {
  60     if (host_port.host() == "~NOTFOUND")
  61       return ERR_NAME_NOT_RESOLVED;
  62     info->set_host_port_pair(host_port);
  63   }
  64   return OK;
  65 }
  66
  67 }  // namespace net