mapped_host_resolver.cc revision 9ab5563a3196760eb381d102cbb2bc0f7abc6a50 
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/strings/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
12namespace net {
13
14MappedHostResolver::MappedHostResolver(scoped_ptr<HostResolver> impl)
15    : impl_(impl.Pass()) {
16}
17
18MappedHostResolver::~MappedHostResolver() {
19}
20
21int 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
34int 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
45void MappedHostResolver::CancelRequest(RequestHandle req) {
46  impl_->CancelRequest(req);
47}
48
49HostCache* MappedHostResolver::GetHostCache() {
50  return impl_->GetHostCache();
51}
52
53int MappedHostResolver::ApplyRules(RequestInfo* info) const {
54  HostPortPair host_port(info->host_port_pair());
55  if (rules_.RewriteHost(&host_port)) {
56    if (host_port.host() == "~NOTFOUND")
57      return ERR_NAME_NOT_RESOLVED;
58    info->set_host_port_pair(host_port);
59  }
60  return OK;
61}
62
63}  // namespace net
64