103 lines
3.7 KiB
C++
103 lines
3.7 KiB
C++
//
|
|
// 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 "trunks/trunks_dbus_proxy.h"
|
|
|
|
#include <base/bind.h>
|
|
#include <brillo/bind_lambda.h>
|
|
#include <brillo/dbus/dbus_method_invoker.h>
|
|
|
|
#include "trunks/dbus_interface.h"
|
|
#include "trunks/error_codes.h"
|
|
#include "trunks/interface.pb.h"
|
|
|
|
namespace {
|
|
|
|
// Use a five minute timeout because some commands on some TPM hardware can take
|
|
// a very long time. If a few lengthy operations are already in the queue, a
|
|
// subsequent command needs to wait for all of them. Timeouts are always
|
|
// possible but under normal conditions 5 minutes seems to be plenty.
|
|
const int kDBusMaxTimeout = 5 * 60 * 1000;
|
|
|
|
} // namespace
|
|
|
|
namespace trunks {
|
|
|
|
TrunksDBusProxy::TrunksDBusProxy() : weak_factory_(this) {}
|
|
|
|
TrunksDBusProxy::~TrunksDBusProxy() {
|
|
if (bus_) {
|
|
bus_->ShutdownAndBlock();
|
|
}
|
|
}
|
|
|
|
bool TrunksDBusProxy::Init() {
|
|
dbus::Bus::Options options;
|
|
options.bus_type = dbus::Bus::SYSTEM;
|
|
bus_ = new dbus::Bus(options);
|
|
object_proxy_ = bus_->GetObjectProxy(
|
|
trunks::kTrunksServiceName, dbus::ObjectPath(trunks::kTrunksServicePath));
|
|
origin_thread_id_ = base::PlatformThread::CurrentId();
|
|
return (object_proxy_ != nullptr);
|
|
}
|
|
|
|
void TrunksDBusProxy::SendCommand(const std::string& command,
|
|
const ResponseCallback& callback) {
|
|
if (origin_thread_id_ != base::PlatformThread::CurrentId()) {
|
|
LOG(ERROR) << "Error TrunksDBusProxy cannot be shared by multiple threads.";
|
|
callback.Run(CreateErrorResponse(TRUNKS_RC_IPC_ERROR));
|
|
}
|
|
SendCommandRequest tpm_command_proto;
|
|
tpm_command_proto.set_command(command);
|
|
auto on_success = [callback](const SendCommandResponse& response) {
|
|
callback.Run(response.response());
|
|
};
|
|
auto on_error = [callback](brillo::Error* error) {
|
|
SendCommandResponse response;
|
|
response.set_response(CreateErrorResponse(SAPI_RC_NO_RESPONSE_RECEIVED));
|
|
callback.Run(response.response());
|
|
};
|
|
brillo::dbus_utils::CallMethodWithTimeout(
|
|
kDBusMaxTimeout, object_proxy_, trunks::kTrunksInterface,
|
|
trunks::kSendCommand, base::Bind(on_success), base::Bind(on_error),
|
|
tpm_command_proto);
|
|
}
|
|
|
|
std::string TrunksDBusProxy::SendCommandAndWait(const std::string& command) {
|
|
if (origin_thread_id_ != base::PlatformThread::CurrentId()) {
|
|
LOG(ERROR) << "Error TrunksDBusProxy cannot be shared by multiple threads.";
|
|
return CreateErrorResponse(TRUNKS_RC_IPC_ERROR);
|
|
}
|
|
SendCommandRequest tpm_command_proto;
|
|
tpm_command_proto.set_command(command);
|
|
brillo::ErrorPtr error;
|
|
std::unique_ptr<dbus::Response> dbus_response =
|
|
brillo::dbus_utils::CallMethodAndBlockWithTimeout(
|
|
kDBusMaxTimeout, object_proxy_, trunks::kTrunksInterface,
|
|
trunks::kSendCommand, &error, tpm_command_proto);
|
|
SendCommandResponse tpm_response_proto;
|
|
if (dbus_response.get() &&
|
|
brillo::dbus_utils::ExtractMethodCallResults(dbus_response.get(), &error,
|
|
&tpm_response_proto)) {
|
|
return tpm_response_proto.response();
|
|
} else {
|
|
LOG(ERROR) << "TrunksProxy could not parse response: "
|
|
<< error->GetMessage();
|
|
return CreateErrorResponse(SAPI_RC_MALFORMED_RESPONSE);
|
|
}
|
|
}
|
|
|
|
} // namespace trunks
|