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