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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 <vector>
#include "fuzzer/FuzzedDataProvider.h"
#include "utils/String16.h"
static constexpr int MAX_STRING_BYTES = 256;
static constexpr uint8_t MAX_OPERATIONS = 50;
std::vector<std::function<void(FuzzedDataProvider&, android::String16, android::String16)>>
operations = {
// Bytes and size
([](FuzzedDataProvider&, android::String16 str1, android::String16) -> void {
str1.c_str();
}),
([](FuzzedDataProvider&, android::String16 str1, android::String16) -> void {
str1.isStaticString();
}),
([](FuzzedDataProvider&, android::String16 str1, android::String16) -> void {
str1.size();
}),
// Comparison
([](FuzzedDataProvider&, android::String16 str1, android::String16 str2) -> void {
str1.startsWith(str2);
}),
([](FuzzedDataProvider&, android::String16 str1, android::String16 str2) -> void {
str1.contains(str2.c_str());
}),
([](FuzzedDataProvider&, android::String16 str1, android::String16 str2) -> void {
str1.compare(str2);
}),
// Append and format
([](FuzzedDataProvider&, android::String16 str1, android::String16 str2) -> void {
str1.append(str2);
}),
([](FuzzedDataProvider& dataProvider, android::String16 str1,
android::String16 str2) -> void {
int pos = dataProvider.ConsumeIntegralInRange<int>(0, str1.size());
str1.insert(pos, str2.c_str());
}),
// Find and replace operations
([](FuzzedDataProvider& dataProvider, android::String16 str1,
android::String16) -> void {
char16_t findChar = dataProvider.ConsumeIntegral<char16_t>();
str1.findFirst(findChar);
}),
([](FuzzedDataProvider& dataProvider, android::String16 str1,
android::String16) -> void {
char16_t findChar = dataProvider.ConsumeIntegral<char16_t>();
str1.findLast(findChar);
}),
([](FuzzedDataProvider& dataProvider, android::String16 str1,
android::String16) -> void {
char16_t findChar = dataProvider.ConsumeIntegral<char16_t>();
char16_t replaceChar = dataProvider.ConsumeIntegral<char16_t>();
str1.replaceAll(findChar, replaceChar);
}),
};
void callFunc(uint8_t index, FuzzedDataProvider& dataProvider, android::String16 str1,
android::String16 str2) {
operations[index](dataProvider, str1, str2);
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
FuzzedDataProvider dataProvider(data, size);
// We're generating two char vectors.
// First, generate 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);
// Next, populate the vectors
std::vector<char> vec = dataProvider.ConsumeBytesWithTerminator<char>(kVecOneLen);
std::vector<char> vec_two = dataProvider.ConsumeBytesWithTerminator<char>(kVecTwoLen);
// Get pointers to their data
char* char_one = vec.data();
char* char_two = vec_two.data();
// Create UTF16 representations
android::String16 str_one_utf16 = android::String16(char_one);
android::String16 str_two_utf16 = android::String16(char_two);
// 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_utf16, str_two_utf16);
}
return 0;
}
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