Peter Qiu | 326b6cf | 2015-09-02 11:11:42 -0700 | [diff] [blame] | 1 | // |
| 2 | // Copyright (C) 2014 The Android Open Source Project |
| 3 | // |
| 4 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | // you may not use this file except in compliance with the License. |
| 6 | // You may obtain a copy of the License at |
| 7 | // |
| 8 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | // |
| 10 | // Unless required by applicable law or agreed to in writing, software |
| 11 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | // See the License for the specific language governing permissions and |
| 14 | // limitations under the License. |
| 15 | // |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 16 | |
| 17 | #include "apmanager/service.h" |
| 18 | |
| 19 | #include <signal.h> |
| 20 | |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 21 | #include <base/strings/stringprintf.h> |
Alex Vakulenko | 8d0c31b | 2015-10-13 09:14:24 -0700 | [diff] [blame^] | 22 | #include <brillo/errors/error.h> |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 23 | |
Peter Qiu | 7a420d3 | 2015-09-22 11:25:15 -0700 | [diff] [blame] | 24 | #if !defined(__ANDROID__) |
| 25 | #include <chromeos/dbus/service_constants.h> |
| 26 | #else |
| 27 | #include "dbus/apmanager/dbus-constants.h" |
| 28 | #endif // __ANDROID__ |
| 29 | |
Peter Qiu | fb39ba4 | 2014-11-21 09:09:59 -0800 | [diff] [blame] | 30 | #include "apmanager/manager.h" |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 31 | |
Alex Vakulenko | 8d0c31b | 2015-10-13 09:14:24 -0700 | [diff] [blame^] | 32 | using brillo::dbus_utils::AsyncEventSequencer; |
| 33 | using brillo::dbus_utils::ExportedObjectManager; |
Vitaly Buka | a463092 | 2014-12-11 18:46:46 -0800 | [diff] [blame] | 34 | using org::chromium::apmanager::ManagerAdaptor; |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 35 | using std::string; |
| 36 | |
| 37 | namespace apmanager { |
| 38 | |
| 39 | // static. |
Peter Qiu | fc98057 | 2015-09-24 10:11:26 -0700 | [diff] [blame] | 40 | #if !defined(__ANDROID__) |
Peter Qiu | fb39ba4 | 2014-11-21 09:09:59 -0800 | [diff] [blame] | 41 | const char Service::kHostapdPath[] = "/usr/sbin/hostapd"; |
Peter Qiu | 7751730 | 2015-01-08 16:22:16 -0800 | [diff] [blame] | 42 | const char Service::kHostapdConfigPathFormat[] = |
| 43 | "/var/run/apmanager/hostapd/hostapd-%d.conf"; |
Peter Qiu | 1dbf9fd | 2015-01-09 13:36:55 -0800 | [diff] [blame] | 44 | const char Service::kHostapdControlInterfacePath[] = |
| 45 | "/var/run/apmanager/hostapd/ctrl_iface"; |
Peter Qiu | fc98057 | 2015-09-24 10:11:26 -0700 | [diff] [blame] | 46 | #else |
| 47 | const char Service::kHostapdPath[] = "/system/bin/hostapd"; |
| 48 | const char Service::kHostapdConfigPathFormat[] = |
| 49 | "/data/misc/apmanager/hostapd/hostapd-%d.conf"; |
| 50 | const char Service::kHostapdControlInterfacePath[] = |
| 51 | "/data/misc/apmanager/hostapd/ctrl_iface"; |
| 52 | #endif // __ANDROID__ |
| 53 | |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 54 | const int Service::kTerminationTimeoutSeconds = 2; |
| 55 | |
Peter Qiu | e265785 | 2015-02-03 11:33:11 -0800 | [diff] [blame] | 56 | // static. Service state definitions. |
| 57 | const char Service::kStateIdle[] = "Idle"; |
| 58 | const char Service::kStateStarting[] = "Starting"; |
| 59 | const char Service::kStateStarted[] = "Started"; |
| 60 | const char Service::kStateFailed[] = "Failed"; |
| 61 | |
Peter Qiu | fb39ba4 | 2014-11-21 09:09:59 -0800 | [diff] [blame] | 62 | Service::Service(Manager* manager, int service_identifier) |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 63 | : org::chromium::apmanager::ServiceAdaptor(this), |
Peter Qiu | fb39ba4 | 2014-11-21 09:09:59 -0800 | [diff] [blame] | 64 | manager_(manager), |
Peter Qiu | fd02b6f | 2015-02-27 09:55:11 -0800 | [diff] [blame] | 65 | identifier_(service_identifier), |
Vitaly Buka | a463092 | 2014-12-11 18:46:46 -0800 | [diff] [blame] | 66 | service_path_( |
| 67 | base::StringPrintf("%s/services/%d", |
| 68 | ManagerAdaptor::GetObjectPath().value().c_str(), |
| 69 | service_identifier)), |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 70 | dbus_path_(dbus::ObjectPath(service_path_)), |
Peter Qiu | bf8e36c | 2014-12-03 22:59:45 -0800 | [diff] [blame] | 71 | config_(new Config(manager, service_path_)), |
Peter Qiu | 7751730 | 2015-01-08 16:22:16 -0800 | [diff] [blame] | 72 | dhcp_server_factory_(DHCPServerFactory::GetInstance()), |
Peter Qiu | 1dbf9fd | 2015-01-09 13:36:55 -0800 | [diff] [blame] | 73 | file_writer_(FileWriter::GetInstance()), |
| 74 | process_factory_(ProcessFactory::GetInstance()) { |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 75 | SetConfig(config_->dbus_path()); |
Peter Qiu | e265785 | 2015-02-03 11:33:11 -0800 | [diff] [blame] | 76 | SetState(kStateIdle); |
Peter Qiu | bf8e36c | 2014-12-03 22:59:45 -0800 | [diff] [blame] | 77 | // TODO(zqiu): come up with better server address management. This is good |
| 78 | // enough for now. |
Peter Qiu | fd02b6f | 2015-02-27 09:55:11 -0800 | [diff] [blame] | 79 | config_->SetServerAddressIndex(identifier_ & 0xFF); |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 80 | } |
| 81 | |
| 82 | Service::~Service() { |
| 83 | // Stop hostapd process if still running. |
| 84 | if (IsHostapdRunning()) { |
Peter Qiu | bf8e36c | 2014-12-03 22:59:45 -0800 | [diff] [blame] | 85 | ReleaseResources(); |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 86 | } |
| 87 | } |
| 88 | |
| 89 | void Service::RegisterAsync(ExportedObjectManager* object_manager, |
Peter Qiu | c9ce1f1 | 2014-12-05 11:14:29 -0800 | [diff] [blame] | 90 | const scoped_refptr<dbus::Bus>& bus, |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 91 | AsyncEventSequencer* sequencer) { |
| 92 | CHECK(!dbus_object_) << "Already registered"; |
| 93 | dbus_object_.reset( |
Alex Vakulenko | 8d0c31b | 2015-10-13 09:14:24 -0700 | [diff] [blame^] | 94 | new brillo::dbus_utils::DBusObject( |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 95 | object_manager, |
Peter Qiu | c9ce1f1 | 2014-12-05 11:14:29 -0800 | [diff] [blame] | 96 | bus, |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 97 | dbus_path_)); |
| 98 | RegisterWithDBusObject(dbus_object_.get()); |
| 99 | dbus_object_->RegisterAsync( |
| 100 | sequencer->GetHandler("Service.RegisterAsync() failed.", true)); |
| 101 | |
| 102 | // Register Config DBus object. |
Peter Qiu | c9ce1f1 | 2014-12-05 11:14:29 -0800 | [diff] [blame] | 103 | config_->RegisterAsync(object_manager, bus, sequencer); |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 104 | } |
| 105 | |
Alex Vakulenko | 8d0c31b | 2015-10-13 09:14:24 -0700 | [diff] [blame^] | 106 | bool Service::Start(brillo::ErrorPtr* error) { |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 107 | if (IsHostapdRunning()) { |
Alex Vakulenko | 8d0c31b | 2015-10-13 09:14:24 -0700 | [diff] [blame^] | 108 | brillo::Error::AddTo( |
| 109 | error, FROM_HERE, brillo::errors::dbus::kDomain, kServiceError, |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 110 | "Service already running"); |
| 111 | return false; |
| 112 | } |
| 113 | |
Peter Qiu | bfd410e | 2015-01-09 15:14:20 -0800 | [diff] [blame] | 114 | // Setup hostapd control interface path. |
| 115 | config_->set_control_interface(kHostapdControlInterfacePath); |
| 116 | |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 117 | // Generate hostapd configuration content. |
| 118 | string config_str; |
| 119 | if (!config_->GenerateConfigFile(error, &config_str)) { |
Alex Vakulenko | 8d0c31b | 2015-10-13 09:14:24 -0700 | [diff] [blame^] | 120 | brillo::Error::AddTo( |
| 121 | error, FROM_HERE, brillo::errors::dbus::kDomain, kServiceError, |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 122 | "Failed to generate config file"); |
| 123 | return false; |
| 124 | } |
| 125 | |
| 126 | // Write configuration to a file. |
Peter Qiu | 7751730 | 2015-01-08 16:22:16 -0800 | [diff] [blame] | 127 | string config_file_name = base::StringPrintf(kHostapdConfigPathFormat, |
Peter Qiu | fd02b6f | 2015-02-27 09:55:11 -0800 | [diff] [blame] | 128 | identifier_); |
Peter Qiu | 7751730 | 2015-01-08 16:22:16 -0800 | [diff] [blame] | 129 | if (!file_writer_->Write(config_file_name, config_str)) { |
Alex Vakulenko | 8d0c31b | 2015-10-13 09:14:24 -0700 | [diff] [blame^] | 130 | brillo::Error::AddTo( |
| 131 | error, FROM_HERE, brillo::errors::dbus::kDomain, kServiceError, |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 132 | "Failed to write configuration to a file"); |
| 133 | return false; |
| 134 | } |
| 135 | |
Peter Qiu | fb39ba4 | 2014-11-21 09:09:59 -0800 | [diff] [blame] | 136 | // Claim the device needed for this ap service. |
| 137 | if (!config_->ClaimDevice()) { |
Alex Vakulenko | 8d0c31b | 2015-10-13 09:14:24 -0700 | [diff] [blame^] | 138 | brillo::Error::AddTo( |
| 139 | error, FROM_HERE, brillo::errors::dbus::kDomain, kServiceError, |
Peter Qiu | fb39ba4 | 2014-11-21 09:09:59 -0800 | [diff] [blame] | 140 | "Failed to claim the device for this service"); |
| 141 | return false; |
| 142 | } |
| 143 | |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 144 | // Start hostapd process. |
Peter Qiu | 7751730 | 2015-01-08 16:22:16 -0800 | [diff] [blame] | 145 | if (!StartHostapdProcess(config_file_name)) { |
Alex Vakulenko | 8d0c31b | 2015-10-13 09:14:24 -0700 | [diff] [blame^] | 146 | brillo::Error::AddTo( |
| 147 | error, FROM_HERE, brillo::errors::dbus::kDomain, kServiceError, |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 148 | "Failed to start hostapd"); |
Peter Qiu | fb39ba4 | 2014-11-21 09:09:59 -0800 | [diff] [blame] | 149 | // Release the device claimed for this service. |
| 150 | config_->ReleaseDevice(); |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 151 | return false; |
| 152 | } |
| 153 | |
Peter Qiu | bf8e36c | 2014-12-03 22:59:45 -0800 | [diff] [blame] | 154 | // Start DHCP server if in server mode. |
| 155 | if (config_->GetOperationMode() == kOperationModeServer) { |
| 156 | dhcp_server_.reset( |
| 157 | dhcp_server_factory_->CreateDHCPServer(config_->GetServerAddressIndex(), |
| 158 | config_->selected_interface())); |
| 159 | if (!dhcp_server_->Start()) { |
Alex Vakulenko | 8d0c31b | 2015-10-13 09:14:24 -0700 | [diff] [blame^] | 160 | brillo::Error::AddTo( |
| 161 | error, FROM_HERE, brillo::errors::dbus::kDomain, kServiceError, |
Peter Qiu | bf8e36c | 2014-12-03 22:59:45 -0800 | [diff] [blame] | 162 | "Failed to start DHCP server"); |
| 163 | ReleaseResources(); |
| 164 | return false; |
| 165 | } |
Peter Qiu | 943cf3a | 2015-02-24 10:59:17 -0800 | [diff] [blame] | 166 | manager_->RequestDHCPPortAccess(config_->selected_interface()); |
Peter Qiu | bf8e36c | 2014-12-03 22:59:45 -0800 | [diff] [blame] | 167 | } |
| 168 | |
Peter Qiu | fda548c | 2015-01-13 14:39:19 -0800 | [diff] [blame] | 169 | // Start monitoring hostapd. |
| 170 | if (!hostapd_monitor_) { |
| 171 | hostapd_monitor_.reset( |
| 172 | new HostapdMonitor(base::Bind(&Service::HostapdEventCallback, |
| 173 | base::Unretained(this)), |
| 174 | config_->control_interface(), |
| 175 | config_->selected_interface())); |
| 176 | } |
| 177 | hostapd_monitor_->Start(); |
| 178 | |
Peter Qiu | e265785 | 2015-02-03 11:33:11 -0800 | [diff] [blame] | 179 | // Update service state. |
| 180 | SetState(kStateStarting); |
| 181 | |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 182 | return true; |
| 183 | } |
| 184 | |
Alex Vakulenko | 8d0c31b | 2015-10-13 09:14:24 -0700 | [diff] [blame^] | 185 | bool Service::Stop(brillo::ErrorPtr* error) { |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 186 | if (!IsHostapdRunning()) { |
Alex Vakulenko | 8d0c31b | 2015-10-13 09:14:24 -0700 | [diff] [blame^] | 187 | brillo::Error::AddTo( |
| 188 | error, FROM_HERE, brillo::errors::dbus::kDomain, kServiceError, |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 189 | "Service is not currently running"); |
| 190 | return false; |
| 191 | } |
| 192 | |
Peter Qiu | bf8e36c | 2014-12-03 22:59:45 -0800 | [diff] [blame] | 193 | ReleaseResources(); |
Peter Qiu | e265785 | 2015-02-03 11:33:11 -0800 | [diff] [blame] | 194 | SetState(kStateIdle); |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 195 | return true; |
| 196 | } |
| 197 | |
| 198 | bool Service::IsHostapdRunning() { |
| 199 | return hostapd_process_ && hostapd_process_->pid() != 0 && |
Alex Vakulenko | 8d0c31b | 2015-10-13 09:14:24 -0700 | [diff] [blame^] | 200 | brillo::Process::ProcessExists(hostapd_process_->pid()); |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 201 | } |
| 202 | |
| 203 | bool Service::StartHostapdProcess(const string& config_file_path) { |
Peter Qiu | 1dbf9fd | 2015-01-09 13:36:55 -0800 | [diff] [blame] | 204 | hostapd_process_.reset(process_factory_->CreateProcess()); |
Peter Qiu | fb39ba4 | 2014-11-21 09:09:59 -0800 | [diff] [blame] | 205 | hostapd_process_->AddArg(kHostapdPath); |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 206 | hostapd_process_->AddArg(config_file_path); |
| 207 | if (!hostapd_process_->Start()) { |
| 208 | hostapd_process_.reset(); |
| 209 | return false; |
| 210 | } |
| 211 | return true; |
| 212 | } |
| 213 | |
| 214 | void Service::StopHostapdProcess() { |
| 215 | if (!hostapd_process_->Kill(SIGTERM, kTerminationTimeoutSeconds)) { |
| 216 | hostapd_process_->Kill(SIGKILL, kTerminationTimeoutSeconds); |
| 217 | } |
| 218 | hostapd_process_.reset(); |
| 219 | } |
| 220 | |
Peter Qiu | bf8e36c | 2014-12-03 22:59:45 -0800 | [diff] [blame] | 221 | void Service::ReleaseResources() { |
Peter Qiu | e265785 | 2015-02-03 11:33:11 -0800 | [diff] [blame] | 222 | hostapd_monitor_.reset(); |
Peter Qiu | bf8e36c | 2014-12-03 22:59:45 -0800 | [diff] [blame] | 223 | StopHostapdProcess(); |
| 224 | dhcp_server_.reset(); |
| 225 | config_->ReleaseDevice(); |
Peter Qiu | 943cf3a | 2015-02-24 10:59:17 -0800 | [diff] [blame] | 226 | manager_->ReleaseDHCPPortAccess(config_->selected_interface()); |
Peter Qiu | bf8e36c | 2014-12-03 22:59:45 -0800 | [diff] [blame] | 227 | } |
| 228 | |
Peter Qiu | fda548c | 2015-01-13 14:39:19 -0800 | [diff] [blame] | 229 | void Service::HostapdEventCallback(HostapdMonitor::Event event, |
| 230 | const std::string& data) { |
| 231 | switch (event) { |
Peter Qiu | e265785 | 2015-02-03 11:33:11 -0800 | [diff] [blame] | 232 | case HostapdMonitor::kHostapdFailed: |
| 233 | SetState(kStateFailed); |
| 234 | break; |
| 235 | case HostapdMonitor::kHostapdStarted: |
| 236 | SetState(kStateStarted); |
| 237 | break; |
Peter Qiu | fda548c | 2015-01-13 14:39:19 -0800 | [diff] [blame] | 238 | case HostapdMonitor::kStationConnected: |
| 239 | LOG(INFO) << "Station connected: " << data; |
| 240 | break; |
| 241 | case HostapdMonitor::kStationDisconnected: |
| 242 | LOG(INFO) << "Station disconnected: " << data; |
| 243 | break; |
| 244 | default: |
| 245 | LOG(ERROR) << "Unknown event: " << event; |
| 246 | break; |
| 247 | } |
| 248 | } |
| 249 | |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 250 | } // namespace apmanager |