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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 <functional>
#include <iostream>
#include "fuzzer/FuzzedDataProvider.h"
#include "utils/String8.h"
static constexpr int MAX_STRING_BYTES = 256;
static constexpr uint8_t MAX_OPERATIONS = 50;
std::vector<std::function<void(FuzzedDataProvider&, android::String8, android::String8)>>
operations = {
// Bytes and size
[](FuzzedDataProvider&, android::String8 str1, android::String8) -> void {
str1.bytes();
},
[](FuzzedDataProvider&, android::String8 str1, android::String8) -> void {
str1.isEmpty();
},
[](FuzzedDataProvider&, android::String8 str1, android::String8) -> void {
str1.length();
},
[](FuzzedDataProvider&, android::String8 str1, android::String8) -> void {
str1.size();
},
// Casing
[](FuzzedDataProvider&, android::String8 str1, android::String8) -> void {
str1.toUpper();
},
[](FuzzedDataProvider&, android::String8 str1, android::String8) -> void {
str1.toLower();
},
[](FuzzedDataProvider&, android::String8 str1, android::String8 str2) -> void {
str1.removeAll(str2.c_str());
},
[](FuzzedDataProvider&, android::String8 str1, android::String8 str2) -> void {
str1.compare(str2);
},
// Append and format
[](FuzzedDataProvider&, android::String8 str1, android::String8 str2) -> void {
str1.append(str2);
},
[](FuzzedDataProvider&, android::String8 str1, android::String8 str2) -> void {
str1.appendFormat(str1.c_str(), str2.c_str());
},
[](FuzzedDataProvider&, android::String8 str1, android::String8 str2) -> void {
str1.format(str1.c_str(), str2.c_str());
},
// Find operation
[](FuzzedDataProvider& dataProvider, android::String8 str1,
android::String8) -> void {
// We need to get a value from our fuzzer here.
int start_index = dataProvider.ConsumeIntegralInRange<int>(0, str1.size());
str1.find(str1.c_str(), start_index);
},
// Path handling
[](FuzzedDataProvider&, android::String8 str1, android::String8) -> void {
str1.getBasePath();
},
[](FuzzedDataProvider&, android::String8 str1, android::String8) -> void {
str1.getPathExtension();
},
[](FuzzedDataProvider&, android::String8 str1, android::String8) -> void {
str1.getPathLeaf();
},
[](FuzzedDataProvider&, android::String8 str1, android::String8) -> void {
str1.getPathDir();
},
[](FuzzedDataProvider&, android::String8 str1, android::String8) -> void {
str1.convertToResPath();
},
[](FuzzedDataProvider&, android::String8 str1, android::String8) -> void {
android::String8 path_out_str = android::String8();
str1.walkPath(&path_out_str);
path_out_str.clear();
},
[](FuzzedDataProvider& dataProvider, android::String8 str1,
android::String8) -> void {
str1.setPathName(dataProvider.ConsumeBytesWithTerminator<char>(5).data());
},
[](FuzzedDataProvider& dataProvider, android::String8 str1,
android::String8) -> void {
str1.appendPath(dataProvider.ConsumeBytesWithTerminator<char>(5).data());
},
};
void callFunc(uint8_t index, FuzzedDataProvider& dataProvider, android::String8 str1,
android::String8 str2) {
operations[index](dataProvider, str1, str2);
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
FuzzedDataProvider dataProvider(data, size);
// Generate vector lengths
const size_t kVecOneLen = dataProvider.ConsumeIntegralInRange<size_t>(1, MAX_STRING_BYTES);
const size_t kVecTwoLen = dataProvider.ConsumeIntegralInRange<size_t>(1, MAX_STRING_BYTES);
// Populate vectors
std::vector<char> vec = dataProvider.ConsumeBytesWithTerminator<char>(kVecOneLen);
std::vector<char> vec_two = dataProvider.ConsumeBytesWithTerminator<char>(kVecTwoLen);
// Create UTF-8 pointers
android::String8 str_one_utf8 = android::String8(vec.data());
android::String8 str_two_utf8 = android::String8(vec_two.data());
// Run operations against strings
int opsRun = 0;
while (dataProvider.remaining_bytes() > 0 && opsRun++ < MAX_OPERATIONS) {
uint8_t op = dataProvider.ConsumeIntegralInRange<uint8_t>(0, operations.size() - 1);
callFunc(op, dataProvider, str_one_utf8, str_two_utf8);
}
// Just to be extra sure these can be freed, we're going to explicitly clear
// them
str_one_utf8.clear();
str_two_utf8.clear();
return 0;
}
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