You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
88 lines
2.5 KiB
88 lines
2.5 KiB
/*
|
|
* Copyright 2020 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.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "gatekeeper/gatekeeper_messages.h"
|
|
|
|
#include "common/libs/fs/shared_fd.h"
|
|
|
|
#include <memory>
|
|
|
|
namespace gatekeeper {
|
|
|
|
/**
|
|
* GatekeeperRawMessage - Header and raw byte payload for a serialized
|
|
* gatekeeper message.
|
|
*
|
|
* @cmd: the command, one of gatekeeper::ENROLL and gatekeeper::VERIFY.
|
|
* @payload: start of the serialized command specific payload
|
|
*/
|
|
struct GatekeeperRawMessage {
|
|
uint32_t cmd : 31;
|
|
bool is_response : 1;
|
|
uint32_t payload_size;
|
|
uint8_t payload[0];
|
|
};
|
|
|
|
} // namespace gatekeeper
|
|
|
|
namespace cuttlefish {
|
|
|
|
using gatekeeper::GatekeeperRawMessage;
|
|
|
|
/**
|
|
* A destroyer for GatekeeperRawMessage instances created with
|
|
* CreateGatekeeperMessage. Wipes memory from the GatekeeperRawMessage instances.
|
|
*/
|
|
class GatekeeperCommandDestroyer {
|
|
public:
|
|
void operator()(GatekeeperRawMessage* ptr);
|
|
};
|
|
|
|
/** An owning pointer for a GatekeeperRawMessage instance. */
|
|
using ManagedGatekeeperMessage =
|
|
std::unique_ptr<GatekeeperRawMessage, GatekeeperCommandDestroyer>;
|
|
|
|
/**
|
|
* Allocates memory for a GatekeeperRawMessage carrying a message of size
|
|
* `payload_size`.
|
|
*/
|
|
ManagedGatekeeperMessage CreateGatekeeperMessage(
|
|
uint32_t command, bool is_response, size_t payload_size);
|
|
|
|
/*
|
|
* Interface for communication channels that synchronously communicate Gatekeeper
|
|
* IPC/RPC calls. Sends messages over a file descriptor.
|
|
*/
|
|
class GatekeeperChannel {
|
|
public:
|
|
GatekeeperChannel(SharedFD input, SharedFD output);
|
|
|
|
bool SendRequest(uint32_t command,
|
|
const gatekeeper::GateKeeperMessage& message);
|
|
bool SendResponse(uint32_t command,
|
|
const gatekeeper::GateKeeperMessage& message);
|
|
ManagedGatekeeperMessage ReceiveMessage();
|
|
private:
|
|
SharedFD input_;
|
|
SharedFD output_;
|
|
bool SendMessage(uint32_t command, bool response,
|
|
const gatekeeper::GateKeeperMessage& message);
|
|
};
|
|
|
|
} // namespace cuttlefish
|