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| 1 // Copyright 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 CHROME_UTILITY_LOCAL_DISCOVERY_SERVICE_DISCOVERY_CLIENT_IMPL_H_ | |
| 6 #define CHROME_UTILITY_LOCAL_DISCOVERY_SERVICE_DISCOVERY_CLIENT_IMPL_H_ | |
| 7 | |
| 8 #include <map> | |
| 9 #include <string> | |
| 10 #include <vector> | |
| 11 | |
| 12 #include "base/callback.h" | |
| 13 #include "base/cancelable_callback.h" | |
| 14 #include "base/memory/linked_ptr.h" | |
| 15 #include "base/memory/weak_ptr.h" | |
| 16 #include "base/message_loop/message_loop.h" | |
| 17 #include "chrome/common/local_discovery/service_discovery_client.h" | |
| 18 #include "net/dns/mdns_client.h" | |
| 19 | |
| 20 namespace local_discovery { | |
| 21 | |
| 22 class ServiceDiscoveryClientImpl : public ServiceDiscoveryClient { | |
| 23 public: | |
| 24 // |mdns_client| must outlive the Service Discovery Client. | |
| 25 explicit ServiceDiscoveryClientImpl(net::MDnsClient* mdns_client); | |
| 26 virtual ~ServiceDiscoveryClientImpl(); | |
| 27 | |
| 28 // ServiceDiscoveryClient implementation: | |
| 29 virtual scoped_ptr<ServiceWatcher> CreateServiceWatcher( | |
| 30 const std::string& service_type, | |
| 31 const ServiceWatcher::UpdatedCallback& callback) OVERRIDE; | |
| 32 | |
| 33 virtual scoped_ptr<ServiceResolver> CreateServiceResolver( | |
| 34 const std::string& service_name, | |
| 35 const ServiceResolver::ResolveCompleteCallback& callback) OVERRIDE; | |
| 36 | |
| 37 virtual scoped_ptr<LocalDomainResolver> CreateLocalDomainResolver( | |
| 38 const std::string& domain, | |
| 39 net::AddressFamily address_family, | |
| 40 const LocalDomainResolver::IPAddressCallback& callback) OVERRIDE; | |
| 41 | |
| 42 private: | |
| 43 net::MDnsClient* mdns_client_; | |
| 44 | |
| 45 DISALLOW_COPY_AND_ASSIGN(ServiceDiscoveryClientImpl); | |
| 46 }; | |
| 47 | |
| 48 class ServiceWatcherImpl : public ServiceWatcher, | |
| 49 public net::MDnsListener::Delegate, | |
| 50 public base::SupportsWeakPtr<ServiceWatcherImpl> { | |
| 51 public: | |
| 52 ServiceWatcherImpl(const std::string& service_type, | |
| 53 const ServiceWatcher::UpdatedCallback& callback, | |
| 54 net::MDnsClient* mdns_client); | |
| 55 // Listening will automatically stop when the destructor is called. | |
| 56 virtual ~ServiceWatcherImpl(); | |
| 57 | |
| 58 // ServiceWatcher implementation: | |
| 59 virtual void Start() OVERRIDE; | |
| 60 | |
| 61 virtual void DiscoverNewServices(bool force_update) OVERRIDE; | |
| 62 | |
| 63 virtual void SetActivelyRefreshServices( | |
| 64 bool actively_refresh_services) OVERRIDE; | |
| 65 | |
| 66 virtual std::string GetServiceType() const OVERRIDE; | |
| 67 | |
| 68 virtual void OnRecordUpdate(net::MDnsListener::UpdateType update, | |
| 69 const net::RecordParsed* record) OVERRIDE; | |
| 70 | |
| 71 virtual void OnNsecRecord(const std::string& name, unsigned rrtype) OVERRIDE; | |
| 72 | |
| 73 virtual void OnCachePurged() OVERRIDE; | |
| 74 | |
| 75 virtual void OnTransactionResponse( | |
| 76 scoped_ptr<net::MDnsTransaction>* transaction, | |
| 77 net::MDnsTransaction::Result result, | |
| 78 const net::RecordParsed* record); | |
| 79 | |
| 80 private: | |
| 81 struct ServiceListeners { | |
| 82 ServiceListeners(const std::string& service_name, | |
| 83 ServiceWatcherImpl* watcher, | |
| 84 net::MDnsClient* mdns_client); | |
| 85 ~ServiceListeners(); | |
| 86 bool Start(); | |
| 87 void SetActiveRefresh(bool auto_update); | |
| 88 | |
| 89 void set_update_pending(bool update_pending) { | |
| 90 update_pending_ = update_pending; | |
| 91 } | |
| 92 | |
| 93 bool update_pending() { return update_pending_; } | |
| 94 | |
| 95 void set_has_ptr(bool has_ptr) { | |
| 96 has_ptr_ = has_ptr; | |
| 97 } | |
| 98 | |
| 99 void set_has_srv(bool has_srv); | |
| 100 | |
| 101 bool has_ptr_or_srv() { return has_ptr_ || has_srv_; } | |
| 102 | |
| 103 private: | |
| 104 void OnSRVRecord(net::MDnsTransaction::Result result, | |
| 105 const net::RecordParsed* record); | |
| 106 | |
| 107 void DoQuerySRV(); | |
| 108 | |
| 109 scoped_ptr<net::MDnsListener> srv_listener_; | |
| 110 scoped_ptr<net::MDnsListener> txt_listener_; | |
| 111 scoped_ptr<net::MDnsTransaction> srv_transaction_; | |
| 112 | |
| 113 std::string service_name_; | |
| 114 net::MDnsClient* mdns_client_; | |
| 115 bool update_pending_; | |
| 116 | |
| 117 bool has_ptr_; | |
| 118 bool has_srv_; | |
| 119 }; | |
| 120 | |
| 121 typedef std::map<std::string, linked_ptr<ServiceListeners> > | |
| 122 ServiceListenersMap; | |
| 123 | |
| 124 void ReadCachedServices(); | |
| 125 void AddService(const std::string& service); | |
| 126 void RemovePTR(const std::string& service); | |
| 127 void RemoveSRV(const std::string& service); | |
| 128 void AddSRV(const std::string& service); | |
| 129 bool CreateTransaction(bool active, bool alert_existing_services, | |
| 130 bool force_refresh, | |
| 131 scoped_ptr<net::MDnsTransaction>* transaction); | |
| 132 | |
| 133 void DeferUpdate(ServiceWatcher::UpdateType update_type, | |
| 134 const std::string& service_name); | |
| 135 void DeliverDeferredUpdate(ServiceWatcher::UpdateType update_type, | |
| 136 const std::string& service_name); | |
| 137 | |
| 138 void ScheduleQuery(int timeout_seconds); | |
| 139 | |
| 140 void SendQuery(int next_timeout_seconds, bool force_update); | |
| 141 | |
| 142 std::string service_type_; | |
| 143 ServiceListenersMap services_; | |
| 144 scoped_ptr<net::MDnsTransaction> transaction_network_; | |
| 145 scoped_ptr<net::MDnsTransaction> transaction_cache_; | |
| 146 scoped_ptr<net::MDnsListener> listener_; | |
| 147 | |
| 148 ServiceWatcher::UpdatedCallback callback_; | |
| 149 bool started_; | |
| 150 bool actively_refresh_services_; | |
| 151 | |
| 152 net::MDnsClient* mdns_client_; | |
| 153 | |
| 154 DISALLOW_COPY_AND_ASSIGN(ServiceWatcherImpl); | |
| 155 }; | |
| 156 | |
| 157 class ServiceResolverImpl | |
| 158 : public ServiceResolver, | |
| 159 public base::SupportsWeakPtr<ServiceResolverImpl> { | |
| 160 public: | |
| 161 ServiceResolverImpl(const std::string& service_name, | |
| 162 const ServiceResolver::ResolveCompleteCallback& callback, | |
| 163 net::MDnsClient* mdns_client); | |
| 164 | |
| 165 virtual ~ServiceResolverImpl(); | |
| 166 | |
| 167 // ServiceResolver implementation: | |
| 168 virtual void StartResolving() OVERRIDE; | |
| 169 | |
| 170 virtual std::string GetName() const OVERRIDE; | |
| 171 | |
| 172 private: | |
| 173 // Respond to transaction finishing for SRV records. | |
| 174 void SrvRecordTransactionResponse(net::MDnsTransaction::Result status, | |
| 175 const net::RecordParsed* record); | |
| 176 | |
| 177 // Respond to transaction finishing for TXT records. | |
| 178 void TxtRecordTransactionResponse(net::MDnsTransaction::Result status, | |
| 179 const net::RecordParsed* record); | |
| 180 | |
| 181 // Respond to transaction finishing for A records. | |
| 182 void ARecordTransactionResponse(net::MDnsTransaction::Result status, | |
| 183 const net::RecordParsed* record); | |
| 184 | |
| 185 void AlertCallbackIfReady(); | |
| 186 | |
| 187 void ServiceNotFound(RequestStatus status); | |
| 188 | |
| 189 // Convert a TXT record to a vector of strings (metadata). | |
| 190 const std::vector<std::string>& RecordToMetadata( | |
| 191 const net::RecordParsed* record) const; | |
| 192 | |
| 193 // Convert an SRV record to a host and port pair. | |
| 194 net::HostPortPair RecordToAddress( | |
| 195 const net::RecordParsed* record) const; | |
| 196 | |
| 197 // Convert an A record to an IP address. | |
| 198 const net::IPAddressNumber& RecordToIPAddress( | |
| 199 const net::RecordParsed* record) const; | |
| 200 | |
| 201 // Convert an MDns status to a service discovery status. | |
| 202 RequestStatus MDnsStatusToRequestStatus( | |
| 203 net::MDnsTransaction::Result status) const; | |
| 204 | |
| 205 bool CreateTxtTransaction(); | |
| 206 bool CreateSrvTransaction(); | |
| 207 void CreateATransaction(); | |
| 208 | |
| 209 std::string service_name_; | |
| 210 ResolveCompleteCallback callback_; | |
| 211 | |
| 212 bool has_resolved_; | |
| 213 | |
| 214 bool metadata_resolved_; | |
| 215 bool address_resolved_; | |
| 216 | |
| 217 scoped_ptr<net::MDnsTransaction> txt_transaction_; | |
| 218 scoped_ptr<net::MDnsTransaction> srv_transaction_; | |
| 219 scoped_ptr<net::MDnsTransaction> a_transaction_; | |
| 220 | |
| 221 ServiceDescription service_staging_; | |
| 222 | |
| 223 net::MDnsClient* mdns_client_; | |
| 224 | |
| 225 DISALLOW_COPY_AND_ASSIGN(ServiceResolverImpl); | |
| 226 }; | |
| 227 | |
| 228 class LocalDomainResolverImpl : public LocalDomainResolver { | |
| 229 public: | |
| 230 LocalDomainResolverImpl(const std::string& domain, | |
| 231 net::AddressFamily address_family, | |
| 232 const IPAddressCallback& callback, | |
| 233 net::MDnsClient* mdns_client); | |
| 234 virtual ~LocalDomainResolverImpl(); | |
| 235 | |
| 236 virtual void Start() OVERRIDE; | |
| 237 | |
| 238 const std::string& domain() { return domain_; } | |
| 239 | |
| 240 private: | |
| 241 void OnTransactionComplete( | |
| 242 net::MDnsTransaction::Result result, | |
| 243 const net::RecordParsed* record); | |
| 244 | |
| 245 scoped_ptr<net::MDnsTransaction> CreateTransaction(uint16 type); | |
| 246 | |
| 247 bool IsSuccess(); | |
| 248 | |
| 249 void SendResolvedAddresses(); | |
| 250 | |
| 251 std::string domain_; | |
| 252 net::AddressFamily address_family_; | |
| 253 IPAddressCallback callback_; | |
| 254 | |
| 255 scoped_ptr<net::MDnsTransaction> transaction_a_; | |
| 256 scoped_ptr<net::MDnsTransaction> transaction_aaaa_; | |
| 257 | |
| 258 int transactions_finished_; | |
| 259 | |
| 260 net::MDnsClient* mdns_client_; | |
| 261 | |
| 262 net::IPAddressNumber address_ipv4_; | |
| 263 net::IPAddressNumber address_ipv6_; | |
| 264 | |
| 265 base::CancelableCallback<void()> timeout_callback_; | |
| 266 | |
| 267 DISALLOW_COPY_AND_ASSIGN(LocalDomainResolverImpl); | |
| 268 }; | |
| 269 | |
| 270 | |
| 271 } // namespace local_discovery | |
| 272 | |
| 273 #endif // CHROME_UTILITY_LOCAL_DISCOVERY_SERVICE_DISCOVERY_CLIENT_IMPL_H_ | |
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Chromium Code Reviews
Issue 252023003:
Revert of Revert of Move service_discovery_client_impl.* into chrome/common. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src