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 | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 26 | const int Service::kTerminationTimeoutSeconds = 2; |
| 27 | |
Peter Qiu | fb39ba4 | 2014-11-21 09:09:59 -0800 | [diff] [blame] | 28 | Service::Service(Manager* manager, int service_identifier) |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 29 | : org::chromium::apmanager::ServiceAdaptor(this), |
Peter Qiu | fb39ba4 | 2014-11-21 09:09:59 -0800 | [diff] [blame] | 30 | manager_(manager), |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 31 | service_identifier_(service_identifier), |
Vitaly Buka | a463092 | 2014-12-11 18:46:46 -0800 | [diff] [blame] | 32 | service_path_( |
| 33 | base::StringPrintf("%s/services/%d", |
| 34 | ManagerAdaptor::GetObjectPath().value().c_str(), |
| 35 | service_identifier)), |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 36 | dbus_path_(dbus::ObjectPath(service_path_)), |
Peter Qiu | bf8e36c | 2014-12-03 22:59:45 -0800 | [diff] [blame] | 37 | config_(new Config(manager, service_path_)), |
Peter Qiu | 7751730 | 2015-01-08 16:22:16 -0800 | [diff] [blame^] | 38 | dhcp_server_factory_(DHCPServerFactory::GetInstance()), |
| 39 | file_writer_(FileWriter::GetInstance()) { |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 40 | SetConfig(config_->dbus_path()); |
Peter Qiu | bf8e36c | 2014-12-03 22:59:45 -0800 | [diff] [blame] | 41 | // TODO(zqiu): come up with better server address management. This is good |
| 42 | // enough for now. |
| 43 | config_->SetServerAddressIndex(service_identifier_ & 0xFF); |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 44 | } |
| 45 | |
| 46 | Service::~Service() { |
| 47 | // Stop hostapd process if still running. |
| 48 | if (IsHostapdRunning()) { |
Peter Qiu | bf8e36c | 2014-12-03 22:59:45 -0800 | [diff] [blame] | 49 | ReleaseResources(); |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 50 | } |
| 51 | } |
| 52 | |
| 53 | void Service::RegisterAsync(ExportedObjectManager* object_manager, |
Peter Qiu | c9ce1f1 | 2014-12-05 11:14:29 -0800 | [diff] [blame] | 54 | const scoped_refptr<dbus::Bus>& bus, |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 55 | AsyncEventSequencer* sequencer) { |
| 56 | CHECK(!dbus_object_) << "Already registered"; |
| 57 | dbus_object_.reset( |
| 58 | new chromeos::dbus_utils::DBusObject( |
| 59 | object_manager, |
Peter Qiu | c9ce1f1 | 2014-12-05 11:14:29 -0800 | [diff] [blame] | 60 | bus, |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 61 | dbus_path_)); |
| 62 | RegisterWithDBusObject(dbus_object_.get()); |
| 63 | dbus_object_->RegisterAsync( |
| 64 | sequencer->GetHandler("Service.RegisterAsync() failed.", true)); |
| 65 | |
| 66 | // Register Config DBus object. |
Peter Qiu | c9ce1f1 | 2014-12-05 11:14:29 -0800 | [diff] [blame] | 67 | config_->RegisterAsync(object_manager, bus, sequencer); |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 68 | } |
| 69 | |
| 70 | bool Service::Start(chromeos::ErrorPtr* error) { |
| 71 | if (IsHostapdRunning()) { |
| 72 | chromeos::Error::AddTo( |
| 73 | error, FROM_HERE, chromeos::errors::dbus::kDomain, kServiceError, |
| 74 | "Service already running"); |
| 75 | return false; |
| 76 | } |
| 77 | |
| 78 | // Generate hostapd configuration content. |
| 79 | string config_str; |
| 80 | if (!config_->GenerateConfigFile(error, &config_str)) { |
| 81 | chromeos::Error::AddTo( |
| 82 | error, FROM_HERE, chromeos::errors::dbus::kDomain, kServiceError, |
| 83 | "Failed to generate config file"); |
| 84 | return false; |
| 85 | } |
| 86 | |
| 87 | // Write configuration to a file. |
Peter Qiu | 7751730 | 2015-01-08 16:22:16 -0800 | [diff] [blame^] | 88 | string config_file_name = base::StringPrintf(kHostapdConfigPathFormat, |
| 89 | service_identifier_); |
| 90 | if (!file_writer_->Write(config_file_name, config_str)) { |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 91 | chromeos::Error::AddTo( |
| 92 | error, FROM_HERE, chromeos::errors::dbus::kDomain, kServiceError, |
| 93 | "Failed to write configuration to a file"); |
| 94 | return false; |
| 95 | } |
| 96 | |
Peter Qiu | fb39ba4 | 2014-11-21 09:09:59 -0800 | [diff] [blame] | 97 | // Claim the device needed for this ap service. |
| 98 | if (!config_->ClaimDevice()) { |
| 99 | chromeos::Error::AddTo( |
| 100 | error, FROM_HERE, chromeos::errors::dbus::kDomain, kServiceError, |
| 101 | "Failed to claim the device for this service"); |
| 102 | return false; |
| 103 | } |
| 104 | |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 105 | // Start hostapd process. |
Peter Qiu | 7751730 | 2015-01-08 16:22:16 -0800 | [diff] [blame^] | 106 | if (!StartHostapdProcess(config_file_name)) { |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 107 | chromeos::Error::AddTo( |
| 108 | error, FROM_HERE, chromeos::errors::dbus::kDomain, kServiceError, |
| 109 | "Failed to start hostapd"); |
Peter Qiu | fb39ba4 | 2014-11-21 09:09:59 -0800 | [diff] [blame] | 110 | // Release the device claimed for this service. |
| 111 | config_->ReleaseDevice(); |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 112 | return false; |
| 113 | } |
| 114 | |
Peter Qiu | bf8e36c | 2014-12-03 22:59:45 -0800 | [diff] [blame] | 115 | // Start DHCP server if in server mode. |
| 116 | if (config_->GetOperationMode() == kOperationModeServer) { |
| 117 | dhcp_server_.reset( |
| 118 | dhcp_server_factory_->CreateDHCPServer(config_->GetServerAddressIndex(), |
| 119 | config_->selected_interface())); |
| 120 | if (!dhcp_server_->Start()) { |
| 121 | chromeos::Error::AddTo( |
| 122 | error, FROM_HERE, chromeos::errors::dbus::kDomain, kServiceError, |
| 123 | "Failed to start DHCP server"); |
| 124 | ReleaseResources(); |
| 125 | return false; |
| 126 | } |
| 127 | } |
| 128 | |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 129 | return true; |
| 130 | } |
| 131 | |
| 132 | bool Service::Stop(chromeos::ErrorPtr* error) { |
| 133 | if (!IsHostapdRunning()) { |
| 134 | chromeos::Error::AddTo( |
| 135 | error, FROM_HERE, chromeos::errors::dbus::kDomain, kServiceError, |
| 136 | "Service is not currently running"); |
| 137 | return false; |
| 138 | } |
| 139 | |
Peter Qiu | bf8e36c | 2014-12-03 22:59:45 -0800 | [diff] [blame] | 140 | ReleaseResources(); |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 141 | return true; |
| 142 | } |
| 143 | |
| 144 | bool Service::IsHostapdRunning() { |
| 145 | return hostapd_process_ && hostapd_process_->pid() != 0 && |
| 146 | chromeos::Process::ProcessExists(hostapd_process_->pid()); |
| 147 | } |
| 148 | |
| 149 | bool Service::StartHostapdProcess(const string& config_file_path) { |
| 150 | hostapd_process_.reset(new chromeos::ProcessImpl()); |
Peter Qiu | fb39ba4 | 2014-11-21 09:09:59 -0800 | [diff] [blame] | 151 | hostapd_process_->AddArg(kHostapdPath); |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 152 | hostapd_process_->AddArg(config_file_path); |
| 153 | if (!hostapd_process_->Start()) { |
| 154 | hostapd_process_.reset(); |
| 155 | return false; |
| 156 | } |
| 157 | return true; |
| 158 | } |
| 159 | |
| 160 | void Service::StopHostapdProcess() { |
| 161 | if (!hostapd_process_->Kill(SIGTERM, kTerminationTimeoutSeconds)) { |
| 162 | hostapd_process_->Kill(SIGKILL, kTerminationTimeoutSeconds); |
| 163 | } |
| 164 | hostapd_process_.reset(); |
| 165 | } |
| 166 | |
Peter Qiu | bf8e36c | 2014-12-03 22:59:45 -0800 | [diff] [blame] | 167 | void Service::ReleaseResources() { |
| 168 | StopHostapdProcess(); |
| 169 | dhcp_server_.reset(); |
| 170 | config_->ReleaseDevice(); |
| 171 | } |
| 172 | |
Peter Qiu | 376e404 | 2014-11-13 09:40:28 -0800 | [diff] [blame] | 173 | } // namespace apmanager |