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