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/*
* 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.
*/
#include "hal/fuzz/fuzz_hci_hal.h"
#include "fuzz/helpers.h"
#include "hci/fuzz/status_vs_complete_commands.h"
namespace bluetooth {
namespace hal {
namespace fuzz {
using bluetooth::fuzz::GetArbitraryBytes;
void FuzzHciHal::registerIncomingPacketCallback(HciHalCallbacks* callbacks) {
callbacks_ = callbacks;
}
void FuzzHciHal::unregisterIncomingPacketCallback() {
callbacks_ = nullptr;
}
void FuzzHciHal::injectArbitrary(FuzzedDataProvider& fdp) {
const uint8_t action = fdp.ConsumeIntegralInRange(0, 4);
switch (action) {
case 1:
injectAclData(GetArbitraryBytes(&fdp));
break;
case 2:
injectHciEvent(GetArbitraryBytes(&fdp));
break;
case 3:
injectScoData(GetArbitraryBytes(&fdp));
break;
case 4:
injectIsoData(GetArbitraryBytes(&fdp));
break;
}
}
void FuzzHciHal::sendHciCommand(HciPacket packet) {
hci::CommandView command = hci::CommandView::FromBytes(packet);
if (!command.IsValid()) {
return;
}
waiting_opcode_ = command.GetOpCode();
waiting_for_status_ = hci::fuzz::uses_command_status(waiting_opcode_);
}
void FuzzHciHal::injectHciEvent(std::vector<uint8_t> data) {
hci::EventView event = hci::EventView::FromBytes(data);
if (!event.IsValid()) {
return;
}
hci::CommandCompleteView complete = hci::CommandCompleteView::Create(event);
if (complete.IsValid()) {
if (waiting_for_status_ || complete.GetCommandOpCode() != waiting_opcode_) {
return;
}
} else if (!waiting_for_status_) {
return;
}
hci::CommandStatusView status = hci::CommandStatusView::Create(event);
if (status.IsValid()) {
if (!waiting_for_status_ || status.GetCommandOpCode() != waiting_opcode_) {
return;
}
} else if (waiting_for_status_) {
return;
}
callbacks_->hciEventReceived(data);
}
void FuzzHciHal::injectAclData(std::vector<uint8_t> data) {
hci::AclView aclPacket = hci::AclView::FromBytes(data);
if (!aclPacket.IsValid()) {
return;
}
callbacks_->aclDataReceived(data);
}
void FuzzHciHal::injectScoData(std::vector<uint8_t> data) {
hci::ScoView scoPacket = hci::ScoView::FromBytes(data);
if (!scoPacket.IsValid()) {
return;
}
callbacks_->scoDataReceived(data);
}
void FuzzHciHal::injectIsoData(std::vector<uint8_t> data) {
hci::IsoView isoPacket = hci::IsoView::FromBytes(data);
if (!isoPacket.IsValid()) {
return;
}
callbacks_->isoDataReceived(data);
}
const ModuleFactory FuzzHciHal::Factory = ModuleFactory([]() { return new FuzzHciHal(); });
} // namespace fuzz
} // namespace hal
} // namespace bluetooth
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