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78 lines
2.4 KiB
78 lines
2.4 KiB
/*
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* Copyright 2020 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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#ifndef BT_STACK_FUZZ_COMMON_HELPERS_H_
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#define BT_STACK_FUZZ_COMMON_HELPERS_H_
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#include <fuzzer/FuzzedDataProvider.h>
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#include <cstring> // For memcpy
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#include <vector>
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#include "raw_address.h"
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#include "sdp_api.h"
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// Calls a function from the ops_vector
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void callArbitraryFunction(
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FuzzedDataProvider* fdp,
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std::vector<std::function<void(FuzzedDataProvider*)>> ops_vector) {
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// Choose which function we'll be calling
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uint8_t function_id =
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fdp->ConsumeIntegralInRange<uint8_t>(0, ops_vector.size() - 1);
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// Call the function we've chosen
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ops_vector[function_id](fdp);
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}
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template <class T>
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T getArbitraryVectorElement(FuzzedDataProvider* fdp, std::vector<T> vect,
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bool allow_null) {
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// If we're allowing null, give it a 50:50 shot at returning a zero element
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// (Or if the vector's empty)
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if (vect.empty() || (allow_null && fdp->ConsumeBool())) {
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return static_cast<T>(0);
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}
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// Otherwise, return an element from our vector
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return vect.at(fdp->ConsumeIntegralInRange<size_t>(0, vect.size() - 1));
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}
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RawAddress generateRawAddress(FuzzedDataProvider* fdp) {
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RawAddress retval;
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// Zero address
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for (int i = 0; i < 6; i++) {
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retval.address[i] = 0;
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}
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// Read as much as we can from the buffer and copy it in
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std::vector<uint8_t> bytes = fdp->ConsumeBytes<uint8_t>(retval.kLength);
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memcpy(retval.address, bytes.data(), bytes.size());
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return retval;
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}
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bluetooth::Uuid generateArbitraryUuid(FuzzedDataProvider* fdp) {
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std::vector<uint8_t> bytes_vect =
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fdp->ConsumeBytes<uint8_t>(bluetooth::Uuid::kNumBytes128);
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// We need it to be the correct size regardless of if fdp ran out of bytes
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while (bytes_vect.size() < bluetooth::Uuid::kNumBytes128) {
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bytes_vect.push_back('\0');
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}
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return bluetooth::Uuid::From128BitBE(bytes_vect.data());
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}
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#endif // BT_STACK_FUZZ_COMMON_HELPERS_H_
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