1// Copyright (c) 2013 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/record_parsed.h"
6
7#include "base/logging.h"
8#include "net/dns/dns_response.h"
9#include "net/dns/record_rdata.h"
10
11namespace net {
12
13RecordParsed::RecordParsed(const std::string& name, uint16 type, uint16 klass,
14                           uint32 ttl, scoped_ptr<const RecordRdata> rdata,
15                           base::Time time_created)
16    : name_(name), type_(type), klass_(klass), ttl_(ttl), rdata_(rdata.Pass()),
17      time_created_(time_created) {
18}
19
20RecordParsed::~RecordParsed() {
21}
22
23// static
24scoped_ptr<const RecordParsed> RecordParsed::CreateFrom(
25    DnsRecordParser* parser,
26    base::Time time_created) {
27  DnsResourceRecord record;
28  scoped_ptr<const RecordRdata> rdata;
29
30  if (!parser->ReadRecord(&record))
31    return scoped_ptr<const RecordParsed>();
32
33  switch (record.type) {
34    case ARecordRdata::kType:
35      rdata = ARecordRdata::Create(record.rdata, *parser);
36      break;
37    case AAAARecordRdata::kType:
38      rdata = AAAARecordRdata::Create(record.rdata, *parser);
39      break;
40    case CnameRecordRdata::kType:
41      rdata = CnameRecordRdata::Create(record.rdata, *parser);
42      break;
43    case PtrRecordRdata::kType:
44      rdata = PtrRecordRdata::Create(record.rdata, *parser);
45      break;
46    case SrvRecordRdata::kType:
47      rdata = SrvRecordRdata::Create(record.rdata, *parser);
48      break;
49    case TxtRecordRdata::kType:
50      rdata = TxtRecordRdata::Create(record.rdata, *parser);
51      break;
52    case NsecRecordRdata::kType:
53      rdata = NsecRecordRdata::Create(record.rdata, *parser);
54      break;
55    default:
56      LOG(WARNING) << "Unknown RData type for recieved record: " << record.type;
57      return scoped_ptr<const RecordParsed>();
58  }
59
60  if (!rdata.get())
61    return scoped_ptr<const RecordParsed>();
62
63  return scoped_ptr<const RecordParsed>(new RecordParsed(record.name,
64                                                         record.type,
65                                                         record.klass,
66                                                         record.ttl,
67                                                         rdata.Pass(),
68                                                         time_created));
69}
70
71bool RecordParsed::IsEqual(const RecordParsed* other, bool is_mdns) const {
72  DCHECK(other);
73  uint16 klass = klass_;
74  uint16 other_klass = other->klass_;
75
76  if (is_mdns) {
77    klass &= dns_protocol::kMDnsClassMask;
78    other_klass &= dns_protocol::kMDnsClassMask;
79  }
80
81  return name_ == other->name_ &&
82      klass == other_klass &&
83      type_ == other->type_ &&
84      rdata_->IsEqual(other->rdata_.get());
85}
86}
87