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1 // Copyright 2015 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 "chromeos/dbus/privet_daemon_manager_client.h" | |
6 | |
7 #include <stddef.h> | |
8 #include <stdint.h> | |
9 | |
10 #include "base/bind.h" | |
11 #include "base/location.h" | |
12 #include "base/logging.h" | |
13 #include "base/macros.h" | |
14 #include "base/memory/weak_ptr.h" | |
15 #include "base/observer_list.h" | |
16 #include "base/single_thread_task_runner.h" | |
17 #include "base/threading/thread_task_runner_handle.h" | |
18 #include "dbus/bus.h" | |
19 #include "dbus/message.h" | |
20 #include "dbus/object_manager.h" | |
21 #include "dbus/object_proxy.h" | |
22 | |
23 namespace chromeos { | |
24 | |
25 namespace { | |
26 | |
27 // TODO(benchan): Move these constants to system_api. | |
28 const char kManagerInterfaceName[] = "org.chromium.privetd.Manager"; | |
29 const char kPrivetdManagerPath[] = "/org/chromium/privetd/Manager"; | |
30 const char kPrivetdServiceName[] = "org.chromium.privetd"; | |
31 const char kPrivetdServicePath[] = "/org/chromium/privetd"; | |
32 const char kSetDescriptionMethod[] = "SetDescription"; | |
33 | |
34 const char kDescriptionProperty[] = "Description"; | |
35 const char kGCDBootstrapStateProperty[] = "GCDBootstrapState"; | |
36 const char kNameProperty[] = "Name"; | |
37 const char kPairingInfoCodeProperty[] = "code"; | |
38 const char kPairingInfoModeProperty[] = "mode"; | |
39 const char kPairingInfoProperty[] = "PairingInfo"; | |
40 const char kPairingInfoSessionIdProperty[] = "sessionId"; | |
41 const char kWiFiBootstrapStateProperty[] = "WiFiBootstrapState"; | |
42 | |
43 // The PrivetDaemonManagerClient implementation used in production. | |
44 class PrivetDaemonManagerClientImpl : public PrivetDaemonManagerClient, | |
45 public dbus::ObjectManager::Interface { | |
46 public: | |
47 PrivetDaemonManagerClientImpl(); | |
48 ~PrivetDaemonManagerClientImpl() override; | |
49 | |
50 // PrivetDaemonManagerClient overrides. | |
51 void AddObserver(Observer* observer) override; | |
52 void RemoveObserver(Observer* observer) override; | |
53 void SetDescription(const std::string& description, | |
54 const VoidDBusMethodCallback& callback) override; | |
55 const Properties* GetProperties() override; | |
56 | |
57 // DBusClient overrides. | |
58 void Init(dbus::Bus* bus) override; | |
59 | |
60 // dbus::ObjectManager::Interface overrides. | |
61 dbus::PropertySet* CreateProperties( | |
62 dbus::ObjectProxy* object_proxy, | |
63 const dbus::ObjectPath& object_path, | |
64 const std::string& interface_name) override; | |
65 void ObjectAdded(const dbus::ObjectPath& object_path, | |
66 const std::string& interface_name) override; | |
67 void ObjectRemoved(const dbus::ObjectPath& object_path, | |
68 const std::string& interface_name) override; | |
69 | |
70 private: | |
71 // Called by dbus::PropertySet when a property value is changed, | |
72 // either by result of a signal or response to a GetAll() or Get() | |
73 // call. Informs observers. | |
74 void OnManagerPropertyChanged(const std::string& property_name); | |
75 void OnVoidDBusMethod(const VoidDBusMethodCallback& callback, | |
76 dbus::Response* response); | |
77 | |
78 // List of observers interested in event notifications from us. | |
79 base::ObserverList<Observer> observers_; | |
80 dbus::ObjectManager* object_manager_; | |
81 base::WeakPtrFactory<PrivetDaemonManagerClientImpl> weak_ptr_factory_; | |
82 | |
83 DISALLOW_COPY_AND_ASSIGN(PrivetDaemonManagerClientImpl); | |
84 }; | |
85 | |
86 PrivetDaemonManagerClientImpl::PrivetDaemonManagerClientImpl() | |
87 : object_manager_(nullptr), weak_ptr_factory_(this) { | |
88 } | |
89 | |
90 PrivetDaemonManagerClientImpl::~PrivetDaemonManagerClientImpl() { | |
91 if (object_manager_) { | |
92 object_manager_->UnregisterInterface(kManagerInterfaceName); | |
93 } | |
94 } | |
95 | |
96 void PrivetDaemonManagerClientImpl::AddObserver(Observer* observer) { | |
97 DCHECK(observer); | |
98 observers_.AddObserver(observer); | |
99 } | |
100 | |
101 void PrivetDaemonManagerClientImpl::RemoveObserver(Observer* observer) { | |
102 DCHECK(observer); | |
103 observers_.RemoveObserver(observer); | |
104 } | |
105 | |
106 void PrivetDaemonManagerClientImpl::SetDescription( | |
107 const std::string& description, | |
108 const VoidDBusMethodCallback& callback) { | |
109 dbus::ObjectProxy* object_proxy = | |
110 object_manager_->GetObjectProxy(dbus::ObjectPath(kPrivetdManagerPath)); | |
111 if (!object_proxy) { | |
112 base::ThreadTaskRunnerHandle::Get()->PostTask( | |
113 FROM_HERE, | |
114 base::Bind(&PrivetDaemonManagerClientImpl::OnVoidDBusMethod, | |
115 weak_ptr_factory_.GetWeakPtr(), callback, nullptr)); | |
116 return; | |
117 } | |
118 | |
119 dbus::MethodCall method_call(kManagerInterfaceName, kSetDescriptionMethod); | |
120 dbus::MessageWriter writer(&method_call); | |
121 writer.AppendString(description); | |
122 object_proxy->CallMethod( | |
123 &method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT, | |
124 base::Bind(&PrivetDaemonManagerClientImpl::OnVoidDBusMethod, | |
125 weak_ptr_factory_.GetWeakPtr(), callback)); | |
126 } | |
127 | |
128 const PrivetDaemonManagerClient::Properties* | |
129 PrivetDaemonManagerClientImpl::GetProperties() { | |
130 return static_cast<Properties*>(object_manager_->GetProperties( | |
131 dbus::ObjectPath(kPrivetdManagerPath), kManagerInterfaceName)); | |
132 } | |
133 | |
134 void PrivetDaemonManagerClientImpl::Init(dbus::Bus* bus) { | |
135 object_manager_ = bus->GetObjectManager( | |
136 kPrivetdServiceName, dbus::ObjectPath(kPrivetdServicePath)); | |
137 object_manager_->RegisterInterface(kManagerInterfaceName, this); | |
138 } | |
139 | |
140 dbus::PropertySet* PrivetDaemonManagerClientImpl::CreateProperties( | |
141 dbus::ObjectProxy* object_proxy, | |
142 const dbus::ObjectPath& object_path, | |
143 const std::string& interface_name) { | |
144 dbus::PropertySet* properties = nullptr; | |
145 if (interface_name == kManagerInterfaceName) { | |
146 properties = new Properties( | |
147 object_proxy, interface_name, | |
148 base::Bind(&PrivetDaemonManagerClientImpl::OnManagerPropertyChanged, | |
149 weak_ptr_factory_.GetWeakPtr())); | |
150 } else { | |
151 NOTREACHED() << "Unhandled interface name " << interface_name; | |
152 } | |
153 return properties; | |
154 } | |
155 | |
156 void PrivetDaemonManagerClientImpl::ObjectAdded( | |
157 const dbus::ObjectPath& object_path, | |
158 const std::string& interface_name) { | |
159 if (interface_name == kManagerInterfaceName) { | |
160 FOR_EACH_OBSERVER(Observer, observers_, ManagerAdded()); | |
161 } else { | |
162 NOTREACHED() << "Unhandled interface name " << interface_name; | |
163 } | |
164 } | |
165 | |
166 void PrivetDaemonManagerClientImpl::ObjectRemoved( | |
167 const dbus::ObjectPath& object_path, | |
168 const std::string& interface_name) { | |
169 if (interface_name == kManagerInterfaceName) { | |
170 FOR_EACH_OBSERVER(Observer, observers_, ManagerRemoved()); | |
171 } else { | |
172 NOTREACHED() << "Unhandled interface name " << interface_name; | |
173 } | |
174 } | |
175 | |
176 void PrivetDaemonManagerClientImpl::OnManagerPropertyChanged( | |
177 const std::string& property_name) { | |
178 FOR_EACH_OBSERVER(Observer, observers_, | |
179 ManagerPropertyChanged(property_name)); | |
180 } | |
181 | |
182 void PrivetDaemonManagerClientImpl::OnVoidDBusMethod( | |
183 const VoidDBusMethodCallback& callback, | |
184 dbus::Response* response) { | |
185 callback.Run(response ? DBUS_METHOD_CALL_SUCCESS : DBUS_METHOD_CALL_FAILURE); | |
186 } | |
187 | |
188 } // namespace | |
189 | |
190 void PrivetDaemonManagerClient::PairingInfo::Clear() { | |
191 code_.clear(); | |
192 mode_.clear(); | |
193 session_id_.clear(); | |
194 } | |
195 | |
196 bool PrivetDaemonManagerClient::PairingInfoProperty::PopValueFromReader( | |
197 dbus::MessageReader* reader) { | |
198 dbus::MessageReader variant_reader(nullptr); | |
199 dbus::MessageReader array_reader(nullptr); | |
200 value_.Clear(); | |
201 if (!reader->PopVariant(&variant_reader) || | |
202 !variant_reader.PopArray(&array_reader)) { | |
203 return false; | |
204 } | |
205 while (array_reader.HasMoreData()) { | |
206 dbus::MessageReader dict_entry_reader(nullptr); | |
207 if (!array_reader.PopDictEntry(&dict_entry_reader)) | |
208 return false; | |
209 std::string key; | |
210 if (!dict_entry_reader.PopString(&key)) | |
211 return false; | |
212 | |
213 dbus::MessageReader field_reader(nullptr); | |
214 if (!dict_entry_reader.PopVariant(&field_reader)) | |
215 return false; | |
216 | |
217 if (field_reader.GetDataSignature() == "s") { | |
218 std::string string_value; | |
219 if (!field_reader.PopString(&string_value)) | |
220 return false; | |
221 if (key == kPairingInfoSessionIdProperty) { | |
222 value_.set_session_id(string_value); | |
223 } else if (key == kPairingInfoModeProperty) { | |
224 value_.set_mode(string_value); | |
225 } | |
226 } else if (field_reader.GetDataSignature() == "ay") { | |
227 const uint8_t* bytes = nullptr; | |
228 size_t length = 0; | |
229 if (!field_reader.PopArrayOfBytes(&bytes, &length)) | |
230 return false; | |
231 if (key == kPairingInfoCodeProperty) | |
232 value_.set_code(bytes, length); | |
233 } | |
234 } | |
235 return true; | |
236 } | |
237 | |
238 PrivetDaemonManagerClient::PairingInfo::PairingInfo() { | |
239 } | |
240 | |
241 PrivetDaemonManagerClient::PairingInfo::~PairingInfo() { | |
242 } | |
243 | |
244 void PrivetDaemonManagerClient::PairingInfoProperty::AppendSetValueToWriter( | |
245 dbus::MessageWriter* writer) { | |
246 NOTIMPLEMENTED(); | |
247 } | |
248 | |
249 void PrivetDaemonManagerClient::PairingInfoProperty:: | |
250 ReplaceValueWithSetValue() { | |
251 NOTIMPLEMENTED(); | |
252 } | |
253 | |
254 PrivetDaemonManagerClient::Properties::Properties( | |
255 dbus::ObjectProxy* object_proxy, | |
256 const std::string& interface_name, | |
257 const PropertyChangedCallback& callback) | |
258 : dbus::PropertySet(object_proxy, interface_name, callback) { | |
259 RegisterProperty(kWiFiBootstrapStateProperty, &wifi_bootstrap_state_); | |
260 RegisterProperty(kGCDBootstrapStateProperty, &gcd_bootstrap_state_); | |
261 RegisterProperty(kPairingInfoProperty, &pairing_info_); | |
262 RegisterProperty(kDescriptionProperty, &description_); | |
263 RegisterProperty(kNameProperty, &name_); | |
264 } | |
265 | |
266 PrivetDaemonManagerClient::Properties::~Properties() { | |
267 } | |
268 | |
269 PrivetDaemonManagerClient::Observer::~Observer() { | |
270 } | |
271 | |
272 PrivetDaemonManagerClient::PrivetDaemonManagerClient() { | |
273 } | |
274 | |
275 PrivetDaemonManagerClient::~PrivetDaemonManagerClient() { | |
276 } | |
277 | |
278 // static | |
279 PrivetDaemonManagerClient* PrivetDaemonManagerClient::Create() { | |
280 return new PrivetDaemonManagerClientImpl(); | |
281 } | |
282 | |
283 } // namespace chromeos | |
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