avb_messages.cpp

/*
 * Copyright 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 "avb_messages.h"

#include <stdio.h>
#include <string.h>

namespace avb {

uint32_t RollbackIndexRequest::GetSerializedSize() const {
    return sizeof(value_) + sizeof(slot_);
}

uint32_t RollbackIndexRequest::Serialize(uint8_t* payload,
                                         const uint8_t* end) const {
    if (payload + GetSerializedSize() > end)
        return 0;
    memcpy(payload, &value_, sizeof(value_));
    payload += sizeof(value_);
    memcpy(payload, &slot_, sizeof(slot_));
    payload += sizeof(slot_);
    return GetSerializedSize();
}

int RollbackIndexRequest::Deserialize(const uint8_t* payload,
                                      const uint8_t* end) {
    if (payload + GetSerializedSize() != end)
        return ERR_NOT_VALID;
    memcpy(&value_, payload, sizeof(value_));
    payload += sizeof(value_);
    memcpy(&slot_, payload, sizeof(slot_));
    payload += sizeof(slot_);
    return NO_ERROR;
}

uint32_t RollbackIndexResponse::GetSerializedSize() const {
    return sizeof(value_);
}

uint32_t RollbackIndexResponse::Serialize(uint8_t* payload,
                                          const uint8_t* end) const {
    if (payload + GetSerializedSize() > end)
        return 0;
    memcpy(payload, &value_, sizeof(value_));
    payload += sizeof(value_);
    return GetSerializedSize();
}

int RollbackIndexResponse::Deserialize(const uint8_t* payload,
                                       const uint8_t* end) {
    if (payload + GetSerializedSize() != end)
        return ERR_NOT_VALID;
    memcpy(&value_, payload, sizeof(value_));
    payload += sizeof(value_);
    return NO_ERROR;
}

uint32_t GetVersionResponse::GetSerializedSize() const {
    return sizeof(version_);
}

uint32_t GetVersionResponse::Serialize(uint8_t* payload,
                                       const uint8_t* end) const {
    if (payload + GetSerializedSize() > end)
        return 0;
    memcpy(payload, &version_, sizeof(version_));
    payload += sizeof(version_);
    return GetSerializedSize();
}

int GetVersionResponse::Deserialize(const uint8_t* payload,
                                    const uint8_t* end) {
    if (payload + GetSerializedSize() != end)
        return ERR_NOT_VALID;
    memcpy(&version_, payload, sizeof(version_));
    payload += sizeof(version_);
    return NO_ERROR;
}

uint32_t PermanentAttributesMessage::GetSerializedSize() const {
    return attributes_size_;
}

uint32_t PermanentAttributesMessage::Serialize(uint8_t* payload,
                                               const uint8_t* end) const {
    if (static_cast<uint32_t>(end - payload) != attributes_size_)
        return 0;
    memcpy(payload, attributes_.get(), attributes_size_);
    return attributes_size_;
}

int PermanentAttributesMessage::Deserialize(const uint8_t* payload,
                                            const uint8_t* end) {
    if (end < payload)
        return ERR_NOT_VALID;
    attributes_size_ = end - payload;
    attributes_.reset(new uint8_t[attributes_size_]);
    if (!attributes_.get())
        return ERR_NO_MEMORY;
    memcpy(attributes_.get(), payload, attributes_size_);
    return NO_ERROR;
}

uint32_t LockStateMessage::GetSerializedSize() const {
    return sizeof(lock_state_);
}

uint32_t LockStateMessage::Serialize(uint8_t* payload,
                                     const uint8_t* end) const {
    if (payload + GetSerializedSize() > end)
        return 0;
    memcpy(payload, &lock_state_, sizeof(lock_state_));
    payload += sizeof(lock_state_);
    return GetSerializedSize();
}

int LockStateMessage::Deserialize(const uint8_t* payload, const uint8_t* end) {
    if (payload + GetSerializedSize() != end)
        return ERR_NOT_VALID;
    memcpy(&lock_state_, payload, sizeof(lock_state_));
    payload += sizeof(lock_state_);
    return NO_ERROR;
}

};  // namespace avb