| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <unistd.h> |
| #include <sys/capability.h> |
| |
| #include <csignal> |
| #include <memory> |
| |
| #include <android-base/logging.h> |
| #include <android-base/macros.h> |
| #include <binder/IPCThreadState.h> |
| #include <binder/IServiceManager.h> |
| #include <binder/ProcessState.h> |
| #include <cutils/properties.h> |
| #include <libminijail.h> |
| #include <utils/String16.h> |
| #include <wifi_system/interface_tool.h> |
| |
| #include "wificond/ipc_constants.h" |
| #include "wificond/looper_backed_event_loop.h" |
| #include "wificond/net/netlink_manager.h" |
| #include "wificond/net/netlink_utils.h" |
| #include "wificond/scanning/scan_utils.h" |
| #include "wificond/server.h" |
| #include "wifi_keystore_hal_connector.h" |
| |
| using android::net::wifi::nl80211::IWificond; |
| using android::wifi_system::InterfaceTool; |
| using android::wificond::ipc_constants::kServiceName; |
| using android::wificond::WifiKeystoreHalConnector; |
| using std::unique_ptr; |
| |
| namespace { |
| |
| class ScopedSignalHandler final { |
| public: |
| ScopedSignalHandler(android::wificond::LooperBackedEventLoop* event_loop) { |
| if (s_event_loop_ != nullptr) { |
| LOG(FATAL) << "Only instantiate one signal handler per process!"; |
| } |
| s_event_loop_ = event_loop; |
| std::signal(SIGINT, &ScopedSignalHandler::LeaveLoop); |
| std::signal(SIGTERM, &ScopedSignalHandler::LeaveLoop); |
| } |
| |
| ~ScopedSignalHandler() { |
| std::signal(SIGINT, SIG_DFL); |
| std::signal(SIGTERM, SIG_DFL); |
| s_event_loop_ = nullptr; |
| } |
| |
| private: |
| static android::wificond::LooperBackedEventLoop* s_event_loop_; |
| static void LeaveLoop(int signal) { |
| if (s_event_loop_ != nullptr) { |
| s_event_loop_->TriggerExit(); |
| } |
| } |
| |
| DISALLOW_COPY_AND_ASSIGN(ScopedSignalHandler); |
| }; |
| |
| android::wificond::LooperBackedEventLoop* |
| ScopedSignalHandler::s_event_loop_ = nullptr; |
| |
| |
| // Setup our interface to the Binder driver or die trying. |
| int SetupBinderOrCrash() { |
| int binder_fd = -1; |
| android::ProcessState::self()->setThreadPoolMaxThreadCount(0); |
| android::IPCThreadState::self()->disableBackgroundScheduling(true); |
| int err = android::IPCThreadState::self()->setupPolling(&binder_fd); |
| CHECK_EQ(err, 0) << "Error setting up binder polling: " << strerror(-err); |
| CHECK_GE(binder_fd, 0) << "Invalid binder FD: " << binder_fd; |
| return binder_fd; |
| } |
| |
| void RegisterServiceOrCrash(const android::sp<android::IBinder>& service) { |
| android::sp<android::IServiceManager> sm = android::defaultServiceManager(); |
| CHECK_EQ(sm != NULL, true) << "Could not obtain IServiceManager"; |
| |
| CHECK_EQ(sm->addService(android::String16(kServiceName), service), |
| android::NO_ERROR); |
| } |
| |
| } // namespace |
| |
| void OnBinderReadReady(int fd) { |
| android::IPCThreadState::self()->handlePolledCommands(); |
| } |
| |
| int main(int argc, char** argv) { |
| android::base::InitLogging(argv, android::base::LogdLogger(android::base::SYSTEM)); |
| LOG(INFO) << "wificond is starting up..."; |
| |
| unique_ptr<android::wificond::LooperBackedEventLoop> event_dispatcher( |
| new android::wificond::LooperBackedEventLoop()); |
| ScopedSignalHandler scoped_signal_handler(event_dispatcher.get()); |
| |
| int binder_fd = SetupBinderOrCrash(); |
| CHECK(event_dispatcher->WatchFileDescriptor( |
| binder_fd, |
| android::wificond::EventLoop::kModeInput, |
| &OnBinderReadReady)) << "Failed to watch binder FD"; |
| |
| android::wificond::NetlinkManager netlink_manager(event_dispatcher.get()); |
| if (!netlink_manager.Start()) { |
| LOG(ERROR) << "Failed to start netlink manager"; |
| } |
| android::wificond::NetlinkUtils netlink_utils(&netlink_manager); |
| android::wificond::ScanUtils scan_utils(&netlink_manager); |
| |
| android::sp<android::wificond::Server> server(new android::wificond::Server( |
| unique_ptr<InterfaceTool>(new InterfaceTool), |
| &netlink_utils, |
| &scan_utils)); |
| RegisterServiceOrCrash(server); |
| |
| WifiKeystoreHalConnector keystore_connector; |
| keystore_connector.start(); |
| |
| event_dispatcher->Poll(); |
| LOG(INFO) << "wificond is about to exit"; |
| return 0; |
| } |