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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.
*/
#pragma once
#include "hci/command_interface.h"
#include "hci/hci_layer.h"
#include "os/fuzz/dev_null_queue.h"
#include "os/fuzz/fuzz_inject_queue.h"
#include "os/log.h"
#include <fuzzer/FuzzedDataProvider.h>
#include "fuzz/helpers.h"
namespace bluetooth {
namespace hci {
namespace fuzz {
template <typename T>
class FuzzCommandInterface : public CommandInterface<T> {
public:
void EnqueueCommand(std::unique_ptr<T> command,
common::ContextualOnceCallback<void(hci::CommandCompleteView)> on_complete) override {}
void EnqueueCommand(std::unique_ptr<T> command,
common::ContextualOnceCallback<void(hci::CommandStatusView)> on_status) override {}
};
class FuzzHciLayer : public HciLayer {
public:
void TurnOnAutoReply(FuzzedDataProvider* fdp) {
auto_reply_fdp = fdp;
}
void TurnOffAutoReply() {
auto_reply_fdp = nullptr;
}
void EnqueueCommand(
std::unique_ptr<hci::CommandBuilder> command,
common::ContextualOnceCallback<void(hci::CommandCompleteView)> on_complete) override {
on_command_complete_ = std::move(on_complete);
if (auto_reply_fdp != nullptr) {
injectCommandComplete(bluetooth::fuzz::GetArbitraryBytes(auto_reply_fdp));
}
}
void EnqueueCommand(
std::unique_ptr<CommandBuilder> command,
common::ContextualOnceCallback<void(hci::CommandStatusView)> on_status) override {
on_command_status_ = std::move(on_status);
if (auto_reply_fdp != nullptr) {
injectCommandStatus(bluetooth::fuzz::GetArbitraryBytes(auto_reply_fdp));
}
}
common::BidiQueueEnd<hci::AclBuilder, hci::AclView>* GetAclQueueEnd() override {
return acl_queue_.GetUpEnd();
}
common::BidiQueueEnd<hci::IsoBuilder, hci::IsoView>* GetIsoQueueEnd() override {
return iso_queue_.GetUpEnd();
}
void RegisterEventHandler(hci::EventCode event, common::ContextualCallback<void(hci::EventView)> handler) override {
event_handlers_[event] = handler;
}
void UnregisterEventHandler(hci::EventCode event) override {
auto it = event_handlers_.find(event);
if (it != event_handlers_.end()) {
event_handlers_.erase(it);
}
}
void RegisterLeEventHandler(hci::SubeventCode event,
common::ContextualCallback<void(hci::LeMetaEventView)> handler) override {
le_event_handlers_[event] = handler;
}
void UnregisterLeEventHandler(hci::SubeventCode event) override {
auto it = le_event_handlers_.find(event);
if (it != le_event_handlers_.end()) {
le_event_handlers_.erase(it);
}
}
hci::SecurityInterface* GetSecurityInterface(common::ContextualCallback<void(hci::EventView)> event_handler) override;
hci::LeSecurityInterface* GetLeSecurityInterface(
common::ContextualCallback<void(hci::LeMetaEventView)> event_handler) override;
hci::AclConnectionInterface* GetAclConnectionInterface(
common::ContextualCallback<void(hci::EventView)> event_handler,
common::ContextualCallback<void(uint16_t, hci::ErrorCode)> on_disconnect,
common::ContextualCallback<void(hci::ErrorCode hci_status, uint16_t, uint8_t, uint16_t, uint16_t)>
on_read_remote_version) override;
hci::LeAclConnectionInterface* GetLeAclConnectionInterface(
common::ContextualCallback<void(hci::LeMetaEventView)> event_handler,
common::ContextualCallback<void(uint16_t, hci::ErrorCode)> on_disconnect,
common::ContextualCallback<void(hci::ErrorCode hci_status, uint16_t, uint8_t, uint16_t, uint16_t)>
on_read_remote_version) override;
hci::LeAdvertisingInterface* GetLeAdvertisingInterface(
common::ContextualCallback<void(hci::LeMetaEventView)> event_handler) override;
hci::LeScanningInterface* GetLeScanningInterface(
common::ContextualCallback<void(hci::LeMetaEventView)> event_handler) override;
hci::LeIsoInterface* GetLeIsoInterface(common::ContextualCallback<void(LeMetaEventView)> event_handler) override;
void injectArbitrary(FuzzedDataProvider& fdp);
std::string ToString() const override {
return "FuzzHciLayer";
}
static const ModuleFactory Factory;
protected:
void ListDependencies(ModuleList* list) override {}
void Start() override;
void Stop() override;
private:
void injectAclData(std::vector<uint8_t> data);
void injectCommandComplete(std::vector<uint8_t> data);
void injectCommandStatus(std::vector<uint8_t> data);
void injectEvent(FuzzedDataProvider& fdp);
void injectLeEvent(FuzzedDataProvider& fdp);
void injectSecurityEvent(std::vector<uint8_t> data);
void injectLeSecurityEvent(std::vector<uint8_t> data);
void injectAclEvent(std::vector<uint8_t> data);
void injectAclDisconnect(FuzzedDataProvider& fdp);
void injectLeAclEvent(std::vector<uint8_t> data);
void injectLeAclDisconnect(FuzzedDataProvider& fdp);
void injectLeAdvertisingEvent(std::vector<uint8_t> data);
void injectLeScanningEvent(std::vector<uint8_t> data);
void injectLeIsoEvent(std::vector<uint8_t> data);
FuzzedDataProvider* auto_reply_fdp;
common::BidiQueue<hci::AclView, hci::AclBuilder> acl_queue_{3};
common::BidiQueue<hci::IsoView, hci::IsoBuilder> iso_queue_{3};
os::fuzz::DevNullQueue<AclBuilder>* acl_dev_null_;
os::fuzz::FuzzInjectQueue<AclView>* acl_inject_;
FuzzCommandInterface<AclCommandBuilder> acl_connection_interface_{};
FuzzCommandInterface<AclCommandBuilder> le_acl_connection_interface_{};
FuzzCommandInterface<SecurityCommandBuilder> security_interface_{};
FuzzCommandInterface<LeSecurityCommandBuilder> le_security_interface_{};
FuzzCommandInterface<LeAdvertisingCommandBuilder> le_advertising_interface_{};
FuzzCommandInterface<LeScanningCommandBuilder> le_scanning_interface_{};
FuzzCommandInterface<LeIsoCommandBuilder> le_iso_interface_{};
common::ContextualOnceCallback<void(hci::CommandCompleteView)> on_command_complete_;
common::ContextualOnceCallback<void(hci::CommandStatusView)> on_command_status_;
std::map<hci::EventCode, common::ContextualCallback<void(hci::EventView)>> event_handlers_;
std::map<hci::SubeventCode, common::ContextualCallback<void(hci::LeMetaEventView)>> le_event_handlers_;
common::ContextualCallback<void(hci::EventView)> security_event_handler_;
common::ContextualCallback<void(hci::LeMetaEventView)> le_security_event_handler_;
common::ContextualCallback<void(hci::EventView)> acl_event_handler_;
common::ContextualCallback<void(uint16_t, hci::ErrorCode)> acl_on_disconnect_;
common::ContextualCallback<void(hci::LeMetaEventView)> le_acl_event_handler_;
common::ContextualCallback<void(uint16_t, hci::ErrorCode)> le_acl_on_disconnect_;
common::ContextualCallback<void(hci::LeMetaEventView)> le_advertising_event_handler_;
common::ContextualCallback<void(hci::LeMetaEventView)> le_scanning_event_handler_;
common::ContextualCallback<void(hci::LeMetaEventView)> le_iso_event_handler_;
};
} // namespace fuzz
} // namespace hci
} // namespace bluetooth
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