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// Copyright (c) 2020 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <tinyformat.h>
#include <util/strencodings.h>
#include <algorithm>
#include <cassert>
#include <cstdint>
#include <string>
#include <vector>
void test_one_input(const std::vector<uint8_t>& buffer)
{
FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
const std::string format_string = fuzzed_data_provider.ConsumeRandomLengthString(64);
const int digits_in_format_specifier = std::count_if(format_string.begin(), format_string.end(), IsDigit);
// Avoid triggering the following crash bug:
// * strprintf("%987654321000000:", 1);
//
// Avoid triggering the following OOM bug:
// * strprintf("%.222222200000000$", 1.1);
//
// Upstream bug report: https://github.com/c42f/tinyformat/issues/70
if (format_string.find("%") != std::string::npos && digits_in_format_specifier >= 7) {
return;
}
// Avoid triggering the following crash bug:
// * strprintf("%1$*1$*", -11111111);
//
// Upstream bug report: https://github.com/c42f/tinyformat/issues/70
if (format_string.find("%") != std::string::npos && format_string.find("$") != std::string::npos && format_string.find("*") != std::string::npos && digits_in_format_specifier > 0) {
return;
}
// Avoid triggering the following crash bug:
// * strprintf("%.1s", (char*)nullptr);
//
// (void)strprintf(format_string, (char*)nullptr);
//
// Upstream bug report: https://github.com/c42f/tinyformat/issues/70
try {
(void)strprintf(format_string, (signed char*)nullptr);
} catch (const tinyformat::format_error&) {
}
try {
(void)strprintf(format_string, (unsigned char*)nullptr);
} catch (const tinyformat::format_error&) {
}
try {
(void)strprintf(format_string, (void*)nullptr);
} catch (const tinyformat::format_error&) {
}
try {
(void)strprintf(format_string, (bool*)nullptr);
} catch (const tinyformat::format_error&) {
}
try {
(void)strprintf(format_string, (float*)nullptr);
} catch (const tinyformat::format_error&) {
}
try {
(void)strprintf(format_string, (double*)nullptr);
} catch (const tinyformat::format_error&) {
}
try {
(void)strprintf(format_string, (int16_t*)nullptr);
} catch (const tinyformat::format_error&) {
}
try {
(void)strprintf(format_string, (uint16_t*)nullptr);
} catch (const tinyformat::format_error&) {
}
try {
(void)strprintf(format_string, (int32_t*)nullptr);
} catch (const tinyformat::format_error&) {
}
try {
(void)strprintf(format_string, (uint32_t*)nullptr);
} catch (const tinyformat::format_error&) {
}
try {
(void)strprintf(format_string, (int64_t*)nullptr);
} catch (const tinyformat::format_error&) {
}
try {
(void)strprintf(format_string, (uint64_t*)nullptr);
} catch (const tinyformat::format_error&) {
}
try {
switch (fuzzed_data_provider.ConsumeIntegralInRange(0, 13)) {
case 0:
(void)strprintf(format_string, fuzzed_data_provider.ConsumeRandomLengthString(32));
break;
case 1:
(void)strprintf(format_string, fuzzed_data_provider.ConsumeRandomLengthString(32).c_str());
break;
case 2:
(void)strprintf(format_string, fuzzed_data_provider.ConsumeIntegral<signed char>());
break;
case 3:
(void)strprintf(format_string, fuzzed_data_provider.ConsumeIntegral<unsigned char>());
break;
case 4:
(void)strprintf(format_string, fuzzed_data_provider.ConsumeIntegral<char>());
break;
case 5:
(void)strprintf(format_string, fuzzed_data_provider.ConsumeBool());
break;
case 6:
(void)strprintf(format_string, fuzzed_data_provider.ConsumeFloatingPoint<float>());
break;
case 7:
(void)strprintf(format_string, fuzzed_data_provider.ConsumeFloatingPoint<double>());
break;
case 8:
(void)strprintf(format_string, fuzzed_data_provider.ConsumeIntegral<int16_t>());
break;
case 9:
(void)strprintf(format_string, fuzzed_data_provider.ConsumeIntegral<uint16_t>());
break;
case 10:
(void)strprintf(format_string, fuzzed_data_provider.ConsumeIntegral<int32_t>());
break;
case 11:
(void)strprintf(format_string, fuzzed_data_provider.ConsumeIntegral<uint32_t>());
break;
case 12:
(void)strprintf(format_string, fuzzed_data_provider.ConsumeIntegral<int64_t>());
break;
case 13:
(void)strprintf(format_string, fuzzed_data_provider.ConsumeIntegral<uint64_t>());
break;
default:
assert(false);
}
} catch (const tinyformat::format_error&) {
}
}
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