72 lines
2.4 KiB
C++
72 lines
2.4 KiB
C++
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "chre/platform/shared/host_protocol_common.h"
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#include <string.h>
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#include "chre/platform/shared/generated/host_messages_generated.h"
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using flatbuffers::FlatBufferBuilder;
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using flatbuffers::Offset;
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using flatbuffers::Vector;
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namespace chre {
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void HostProtocolCommon::encodeNanoappMessage(
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FlatBufferBuilder &builder, uint64_t appId, uint32_t messageType,
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uint16_t hostEndpoint, const void *messageData, size_t messageDataLen,
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uint32_t permissions, uint32_t messagePermissions) {
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auto messageDataOffset = builder.CreateVector(
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static_cast<const uint8_t *>(messageData), messageDataLen);
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auto nanoappMessage = fbs::CreateNanoappMessage(
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builder, appId, messageType, hostEndpoint, messageDataOffset,
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messagePermissions, permissions);
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finalize(builder, fbs::ChreMessage::NanoappMessage, nanoappMessage.Union());
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}
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Offset<Vector<int8_t>> HostProtocolCommon::addStringAsByteVector(
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FlatBufferBuilder &builder, const char *str) {
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return builder.CreateVector(reinterpret_cast<const int8_t *>(str),
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strlen(str) + 1);
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}
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void HostProtocolCommon::finalize(FlatBufferBuilder &builder,
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fbs::ChreMessage messageType,
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flatbuffers::Offset<void> message,
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uint16_t hostClientId) {
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fbs::HostAddress hostAddr(hostClientId);
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auto container =
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fbs::CreateMessageContainer(builder, messageType, message, &hostAddr);
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builder.Finish(container);
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}
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bool HostProtocolCommon::verifyMessage(const void *message, size_t messageLen) {
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bool valid = false;
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if (message != nullptr) {
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flatbuffers::Verifier verifier(static_cast<const uint8_t *>(message),
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messageLen);
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valid = fbs::VerifyMessageContainerBuffer(verifier);
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}
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return valid;
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}
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} // namespace chre
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