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 name()29 const std::string& name() const { return name_; } type()30 uint16 type() const { return type_; } klass()31 uint16 klass() const { return klass_; } ttl()32 uint32 ttl() const { return ttl_; } 33 time_created()34 base::Time time_created() const { return time_created_; } 35 rdata()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_ 65