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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 #ifndef NET_DNS_RECORD_PARSED_H_ | |
| 6 #define NET_DNS_RECORD_PARSED_H_ | |
| 7 | |
| 8 #include <string> | |
| 9 | |
| 10 #include "base/memory/scoped_ptr.h" | |
| 11 #include "base/time/time.h" | |
| 12 #include "net/base/net_export.h" | |
| 13 | |
| 14 namespace net { | |
| 15 | |
| 16 class DnsRecordParser; | |
| 17 class RecordRdata; | |
| 18 | |
| 19 // Parsed record. This is a form of DnsResourceRecord where the rdata section | |
| 20 // has been parsed into a data structure. | |
| 21 class NET_EXPORT_PRIVATE RecordParsed { | |
| 22 public: | |
| 23 virtual ~RecordParsed(); | |
| 24 | |
| 25 // All records are inherently immutable. Return a const pointer. | |
| 26 static scoped_ptr<const RecordParsed> CreateFrom(DnsRecordParser* parser, | |
| 27 base::Time time_created); | |
| 28 | |
| 29 const std::string& name() const { return name_; } | |
| 30 uint16 type() const { return type_; } | |
| 31 uint16 klass() const { return klass_; } | |
| 32 uint32 ttl() const { return ttl_; } | |
| 33 | |
| 34 base::Time time_created() const { return time_created_; } | |
| 35 | |
| 36 template <class T> const T* rdata() const { | |
| 37 if (T::kType != type_) | |
| 38 return NULL; | |
| 39 return static_cast<const T*>(rdata_.get()); | |
| 40 } | |
| 41 | |
| 42 // Check if two records have the same data. Ignores time_created and ttl. | |
| 43 // If |is_mdns| is true, ignore the top bit of the class | |
| 44 // (the cache flush bit). | |
| 45 bool IsEqual(const RecordParsed* other, bool is_mdns) const; | |
| 46 | |
| 47 private: | |
| 48 RecordParsed(const std::string& name, uint16 type, uint16 klass, | |
| 49 uint32 ttl, scoped_ptr<const RecordRdata> rdata, | |
| 50 base::Time time_created); | |
| 51 | |
| 52 std::string name_; // in dotted form | |
| 53 const uint16 type_; | |
| 54 const uint16 klass_; | |
| 55 const uint32 ttl_; | |
| 56 | |
| 57 const scoped_ptr<const RecordRdata> rdata_; | |
| 58 | |
| 59 const base::Time time_created_; | |
| 60 }; | |
| 61 | |
| 62 } // namespace net | |
| 63 | |
| 64 #endif // NET_DNS_RECORD_PARSED_H_ | |
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