Finished DNS-SD server. Finished Privet-specified DNS-SD server.

cloud_print/gcp20/prototype/privet_dns_response_builder.h

Index: cloud_print/gcp20/prototype/privet_dns_response_builder.h
diff --git a/cloud_print/gcp20/prototype/privet_dns_response_builder.h b/cloud_print/gcp20/prototype/privet_dns_response_builder.h
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+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CLOUD_PRINT_GCP20_PROTOTYPE_PRIVET_DNS_RESPONSE_BUILDER_H_
+#define CLOUD_PRINT_GCP20_PROTOTYPE_PRIVET_DNS_RESPONSE_BUILDER_H_
+
+#include <string>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "cloud_print/gcp20/prototype/dns_sd_server.h"
+#include "net/base/io_buffer.h"
+#include "net/dns/dns_protocol.h"
+#include "net/dns/dns_response.h"
+
+// Record for storing response data.
+struct DnsRespondRecord {
+  std::string name;  // in dotted form
+  uint16 type;
+  uint16 klass;
+  uint32 ttl;
+  std::string rdata;  // points to the original response buffer
+};
+
+class PrivetDnsResponseBuilder : public DnsResponseBuilderInterface {
+ public:
+  // Initializes builder.
+  PrivetDnsResponseBuilder(uint16 id,
+                           const std::string& service_name,
+                           const std::string& service_domain_name,
+                           const net::IPAddressNumber& http_ip,
+                           uint16 http_port);
+
+  ~PrivetDnsResponseBuilder();
+
+  int size() const OVERRIDE { return size_; }
+
+  int HaveAnswers() const OVERRIDE { return !responses_.empty(); }
+
+  bool IsSamePtr(const std::string& qname) OVERRIDE;
+  bool IsSameSrv(const std::string& qname) OVERRIDE;
+  bool IsSameA(const std::string& qname) OVERRIDE;
+  bool IsSameTxt(const std::string& qname) OVERRIDE;
+
+  void AppendPtr(uint32 ttl) OVERRIDE;
+  void AppendSrv(uint32 ttl) OVERRIDE;
+  void AppendA(uint32 ttl) OVERRIDE;
+  void AppendTxt(uint32 ttl) OVERRIDE;
+
+  scoped_refptr<net::IOBufferWithSize> Build() const OVERRIDE;
+
+  scoped_refptr<net::IOBufferWithSize> BuildAnnouncement(uint32 ttl) OVERRIDE;
+
+ private:
+  // Appends response to packet.
+  void AddResponse(const std::string& name,
+                   uint16 type,
+                   uint32 ttl,
+                   const std::string& rdata);
+
+  std::vector<DnsRespondRecord> responses_;
+
+  // Header of response package.
+  net::dns_protocol::Header header_;
+  int size_;
+
+  // Information about service.
+  const std::string service_name_;
+  const std::string service_domain_name_;
+  const net::IPAddressNumber http_ip_;
+  const uint16 http_port_;
+
+  DISALLOW_COPY_AND_ASSIGN(PrivetDnsResponseBuilder);
+};
+
+class PrivetDnsResponseBuilderFactory
+    : public DnsResponseBuilderFactoryInterface {
+ public:
+  PrivetDnsResponseBuilderFactory(const std::string& service_name_prefix,
+                                  const std::string& service_domain_name,
+                                  const net::IPAddressNumber& http_ip,
+                                  uint16 http_port);
+
+  DnsResponseBuilderInterface* Create(uint16 id) OVERRIDE;
+
+ private:
+  // Information about service.
+  const std::string service_type_;
+  const std::string service_name_prefix_;
+  const std::string service_domain_name_;
+  const net::IPAddressNumber http_ip_;
+  const uint16 http_port_;
+};
+
+#endif  // CLOUD_PRINT_GCP20_PROTOTYPE_PRIVET_DNS_RESPONSE_BUILDER_H_
+