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| 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 | |
| 11 namespace net { | |
| 12 | |
| 13 RecordParsed::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 | |
| 20 RecordParsed::~RecordParsed() { | |
| 21 } | |
| 22 | |
| 23 // static | |
| 24 scoped_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 DVLOG(1) << "Unknown RData type for received 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 | |
| 71 bool 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 } | |
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