upload android base code part6

2018-08-08 17:48:24 +08:00 · 2018-08-08 17:48:24 +08:00 · 4e516ec6ed
commit 4e516ec6ed
parent 421e214c7d
35396 changed files with 9188716 additions and 0 deletions
--- a/android/system/tpm/trunks/trunksd.cc
+++ b/android/system/tpm/trunks/trunksd.cc
@ -0,0 +1,122 @@
+//
+// Copyright (C) 2014 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 <sysexits.h>
+
+#include <base/at_exit.h>
+#include <base/bind.h>
+#include <base/command_line.h>
+#include <base/threading/thread.h>
+#include <brillo/minijail/minijail.h>
+#include <brillo/syslog_logging.h>
+#include <brillo/userdb_utils.h>
+
+#include "trunks/background_command_transceiver.h"
+#include "trunks/resource_manager.h"
+#include "trunks/tpm_handle.h"
+#include "trunks/tpm_simulator_handle.h"
+#if defined(USE_BINDER_IPC)
+#include "trunks/trunks_binder_service.h"
+#else
+#include "trunks/trunks_dbus_service.h"
+#endif
+#include "trunks/trunks_factory_impl.h"
+#include "trunks/trunks_ftdi_spi.h"
+
+namespace {
+
+const uid_t kRootUID = 0;
+const char kTrunksUser[] = "trunks";
+const char kTrunksGroup[] = "trunks";
+#if defined(__ANDROID__)
+const char kTrunksSeccompPath[] =
+    "/system/usr/share/policy/trunksd-seccomp.policy";
+#else
+const char kTrunksSeccompPath[] = "/usr/share/policy/trunksd-seccomp.policy";
+#endif
+const char kBackgroundThreadName[] = "trunksd_background_thread";
+
+void InitMinijailSandbox() {
+  uid_t trunks_uid;
+  gid_t trunks_gid;
+  CHECK(brillo::userdb::GetUserInfo(kTrunksUser, &trunks_uid, &trunks_gid))
+      << "Error getting trunks uid and gid.";
+  CHECK_EQ(getuid(), kRootUID) << "trunksd not initialized as root.";
+  brillo::Minijail* minijail = brillo::Minijail::GetInstance();
+  struct minijail* jail = minijail->New();
+  minijail->DropRoot(jail, kTrunksUser, kTrunksGroup);
+  minijail->UseSeccompFilter(jail, kTrunksSeccompPath);
+  minijail->Enter(jail);
+  minijail->Destroy(jail);
+  CHECK_EQ(getuid(), trunks_uid)
+      << "trunksd was not able to drop user privilege.";
+  CHECK_EQ(getgid(), trunks_gid)
+      << "trunksd was not able to drop group privilege.";
+}
+
+}  // namespace
+
+int main(int argc, char** argv) {
+  base::CommandLine::Init(argc, argv);
+  base::CommandLine* cl = base::CommandLine::ForCurrentProcess();
+  int flags = brillo::kLogToSyslog;
+  if (cl->HasSwitch("log_to_stderr")) {
+    flags |= brillo::kLogToStderr;
+  }
+  brillo::InitLog(flags);
+
+// Create a service instance before anything else so objects like
+// AtExitManager exist.
+#if defined(USE_BINDER_IPC)
+  trunks::TrunksBinderService service;
+#else
+  trunks::TrunksDBusService service;
+#endif
+
+  // Chain together command transceivers:
+  //   [IPC] --> BackgroundCommandTransceiver
+  //         --> ResourceManager
+  //         --> TpmHandle
+  //         --> [TPM]
+  trunks::CommandTransceiver* low_level_transceiver;
+  if (cl->HasSwitch("ftdi")) {
+    LOG(INFO) << "Sending commands to FTDI SPI.";
+    low_level_transceiver = new trunks::TrunksFtdiSpi();
+  } else if (cl->HasSwitch("simulator")) {
+    LOG(INFO) << "Sending commands to simulator.";
+    low_level_transceiver = new trunks::TpmSimulatorHandle();
+  } else {
+    low_level_transceiver = new trunks::TpmHandle();
+  }
+  CHECK(low_level_transceiver->Init())
+      << "Error initializing TPM communication.";
+  // This needs to be *after* opening the TPM handle and *before* starting the
+  // background thread.
+  InitMinijailSandbox();
+  base::Thread background_thread(kBackgroundThreadName);
+  CHECK(background_thread.Start()) << "Failed to start background thread.";
+  trunks::TrunksFactoryImpl factory(low_level_transceiver);
+  CHECK(factory.Initialize()) << "Failed to initialize trunks factory.";
+  trunks::ResourceManager resource_manager(factory, low_level_transceiver);
+  background_thread.task_runner()->PostNonNestableTask(
+      FROM_HERE, base::Bind(&trunks::ResourceManager::Initialize,
+                            base::Unretained(&resource_manager)));
+  trunks::BackgroundCommandTransceiver background_transceiver(
+      &resource_manager, background_thread.task_runner());
+  service.set_transceiver(&background_transceiver);
+  LOG(INFO) << "Trunks service started.";
+  return service.Run();
+}