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-rw-r--r--src/test/fuzz/script_descriptor_cache.cpp42
1 files changed, 42 insertions, 0 deletions
diff --git a/src/test/fuzz/script_descriptor_cache.cpp b/src/test/fuzz/script_descriptor_cache.cpp
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+++ b/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 <optional.h>
+#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();
+ }
+}