Differential D9111 Diff 27433 src/test/fuzz/script_descriptor_cache.cpp

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src/test/fuzz/script_descriptor_cache.cpp

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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 <pubkey.h>
				#include <script/descriptor.h>

				#include <test/fuzz/FuzzedDataProvider.h>
				#include <test/fuzz/fuzz.h>
				#include <test/fuzz/util.h>

				#include <cstdint>
				#include <string>
				#include <vector>

				void test_one_input(const std::vector<uint8_t> &buffer) {
				FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
				DescriptorCache descriptor_cache;
				while (fuzzed_data_provider.ConsumeBool()) {
				const std::vector<uint8_t> code =
				fuzzed_data_provider.ConsumeBytes<uint8_t>(BIP32_EXTKEY_SIZE);
				if (code.size() == BIP32_EXTKEY_SIZE) {
				CExtPubKey xpub;
				xpub.Decode(code.data());
				const uint32_t key_exp_pos =
				fuzzed_data_provider.ConsumeIntegral<uint32_t>();
				CExtPubKey xpub_fetched;
				if (fuzzed_data_provider.ConsumeBool()) {
				(void)descriptor_cache.GetCachedParentExtPubKey(key_exp_pos,
				xpub_fetched);
				descriptor_cache.CacheParentExtPubKey(key_exp_pos, xpub);
				assert(descriptor_cache.GetCachedParentExtPubKey(key_exp_pos,
				xpub_fetched));
				} else {
				const uint32_t der_index =
				fuzzed_data_provider.ConsumeIntegral<uint32_t>();
				(void)descriptor_cache.GetCachedDerivedExtPubKey(
				key_exp_pos, der_index, xpub_fetched);
				descriptor_cache.CacheDerivedExtPubKey(key_exp_pos, der_index,
				xpub);
				assert(descriptor_cache.GetCachedDerivedExtPubKey(
				key_exp_pos, der_index, xpub_fetched));
				}
				assert(xpub == xpub_fetched);
				}
				(void)descriptor_cache.GetCachedParentExtPubKeys();
				(void)descriptor_cache.GetCachedDerivedExtPubKeys();
				}
				}