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/*
* Copyright (C) 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 <android-base/logging.h>
#include "json/json.h"
#include <sys/socket.h>
#include <sys/types.h>
#include <algorithm>
#include <cstdint>
#include <map>
#include <memory>
#include <optional>
#include <string>
namespace cuttlefish {
/// Defines operations supported by allocd
enum class RequestType : uint16_t {
Invalid = 0, // Invalid Request
ID, // Allocate and return a new Session ID
CreateInterface, // Request to create new network interface
DestroyInterface, // Request to destroy a managed network interface
StopSession, // Request all resources within a session be released
Shutdown, // request allocd to shutdown and clean up all resources
};
/// Defines interface types supported by allocd
enum class IfaceType : uint16_t {
Invalid = 0, // an invalid interface
mtap, // mobile tap
wtap, // bridged wireless tap
wifiap, // non bridged wireless tap
etap, // ethernet tap
wbr, // wireless bridge
ebr // ethernet bridge
};
enum class RequestStatus : uint16_t {
Invalid = 0, // Invalid status
Pending, // Request which has not been attempted
Success, // Request was satisfied
Failure // Request failed
};
/// Defines the format for allocd Request messages
struct RequestHeader {
uint16_t version; /// used to differentiate between allocd feature sets
uint16_t len; /// length in bytes of the message payload
};
/// Provides a wrapper around libjson's Reader to additionally log errors
class JsonRequestReader {
public:
JsonRequestReader() = default;
~JsonRequestReader() = default;
std::optional<Json::Value> parse(std::string msg) {
Json::Value ret;
std::unique_ptr<Json::CharReader> reader(reader_builder.newCharReader());
std::string errorMessage;
if (!reader->parse(&*msg.begin(), &*msg.end(), &ret, &errorMessage)) {
LOG(WARNING) << "Received invalid JSON object in input channel: "
<< errorMessage;
LOG(INFO) << "Invalid JSON: " << msg;
return std::nullopt;
}
return ret;
}
private:
Json::CharReaderBuilder reader_builder;
};
} // namespace cuttlefish
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