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-rw-r--r--src/Makefile.test.include7
-rw-r--r--src/test/fuzz/fee_rate.cpp40
-rw-r--r--src/test/fuzz/util.h29
3 files changed, 76 insertions, 0 deletions
diff --git a/src/Makefile.test.include b/src/Makefile.test.include
index 46594a1a04..796a34b867 100644
--- a/src/Makefile.test.include
+++ b/src/Makefile.test.include
@@ -29,6 +29,7 @@ FUZZ_TARGETS = \
test/fuzz/descriptor_parse \
test/fuzz/diskblockindex_deserialize \
test/fuzz/eval_script \
+ test/fuzz/fee_rate \
test/fuzz/fee_rate_deserialize \
test/fuzz/flat_file_pos_deserialize \
test/fuzz/float \
@@ -434,6 +435,12 @@ test_fuzz_eval_script_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_eval_script_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_fuzz_eval_script_SOURCES = $(FUZZ_SUITE) test/fuzz/eval_script.cpp
+test_fuzz_fee_rate_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
+test_fuzz_fee_rate_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
+test_fuzz_fee_rate_LDADD = $(FUZZ_SUITE_LD_COMMON)
+test_fuzz_fee_rate_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
+test_fuzz_fee_rate_SOURCES = $(FUZZ_SUITE) test/fuzz/fee_rate.cpp
+
test_fuzz_fee_rate_deserialize_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) -DFEE_RATE_DESERIALIZE=1
test_fuzz_fee_rate_deserialize_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_fee_rate_deserialize_LDADD = $(FUZZ_SUITE_LD_COMMON)
diff --git a/src/test/fuzz/fee_rate.cpp b/src/test/fuzz/fee_rate.cpp
new file mode 100644
index 0000000000..f3d44d9f93
--- /dev/null
+++ b/src/test/fuzz/fee_rate.cpp
@@ -0,0 +1,40 @@
+// 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 <amount.h>
+#include <policy/feerate.h>
+#include <test/fuzz/FuzzedDataProvider.h>
+#include <test/fuzz/fuzz.h>
+#include <test/fuzz/util.h>
+
+#include <cstdint>
+#include <limits>
+#include <string>
+#include <vector>
+
+void test_one_input(const std::vector<uint8_t>& buffer)
+{
+ FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
+ const CAmount satoshis_per_k = ConsumeMoney(fuzzed_data_provider);
+ const CFeeRate fee_rate{satoshis_per_k};
+
+ (void)fee_rate.GetFeePerK();
+ const size_t bytes = fuzzed_data_provider.ConsumeIntegral<size_t>();
+ if (!MultiplicationOverflow(static_cast<int64_t>(bytes), satoshis_per_k) && bytes <= static_cast<uint64_t>(std::numeric_limits<int64_t>::max())) {
+ (void)fee_rate.GetFee(bytes);
+ }
+ (void)fee_rate.ToString();
+
+ const CAmount another_satoshis_per_k = ConsumeMoney(fuzzed_data_provider);
+ CFeeRate larger_fee_rate{another_satoshis_per_k};
+ larger_fee_rate += fee_rate;
+ if (satoshis_per_k != 0 && another_satoshis_per_k != 0) {
+ assert(fee_rate < larger_fee_rate);
+ assert(!(fee_rate > larger_fee_rate));
+ assert(!(fee_rate == larger_fee_rate));
+ assert(fee_rate <= larger_fee_rate);
+ assert(!(fee_rate >= larger_fee_rate));
+ assert(fee_rate != larger_fee_rate);
+ }
+}
diff --git a/src/test/fuzz/util.h b/src/test/fuzz/util.h
index 2f4aa9ad2b..ff278aebcc 100644
--- a/src/test/fuzz/util.h
+++ b/src/test/fuzz/util.h
@@ -5,6 +5,7 @@
#ifndef BITCOIN_TEST_FUZZ_UTIL_H
#define BITCOIN_TEST_FUZZ_UTIL_H
+#include <amount.h>
#include <attributes.h>
#include <optional.h>
#include <script/script.h>
@@ -43,6 +44,11 @@ NODISCARD inline opcodetype ConsumeOpcodeType(FuzzedDataProvider& fuzzed_data_pr
return static_cast<opcodetype>(fuzzed_data_provider.ConsumeIntegralInRange<uint32_t>(0, MAX_OPCODE));
}
+NODISCARD inline CAmount ConsumeMoney(FuzzedDataProvider& fuzzed_data_provider) noexcept
+{
+ return fuzzed_data_provider.ConsumeIntegralInRange<CAmount>(0, MAX_MONEY);
+}
+
NODISCARD inline CScript ConsumeScript(FuzzedDataProvider& fuzzed_data_provider) noexcept
{
const std::vector<uint8_t> b = ConsumeRandomLengthByteVector(fuzzed_data_provider);
@@ -54,4 +60,27 @@ NODISCARD inline CScriptNum ConsumeScriptNum(FuzzedDataProvider& fuzzed_data_pro
return CScriptNum{fuzzed_data_provider.ConsumeIntegral<int64_t>()};
}
+template <typename T>
+bool MultiplicationOverflow(T i, T j)
+{
+ static_assert(std::is_integral<T>::value, "Integral required.");
+ if (std::numeric_limits<T>::is_signed) {
+ if (i > 0) {
+ if (j > 0) {
+ return i > (std::numeric_limits<T>::max() / j);
+ } else {
+ return j < (std::numeric_limits<T>::min() / i);
+ }
+ } else {
+ if (j > 0) {
+ return i < (std::numeric_limits<T>::min() / j);
+ } else {
+ return i != 0 && (j < (std::numeric_limits<T>::max() / i));
+ }
+ }
+ } else {
+ return j != 0 && i > std::numeric_limits<T>::max() / j;
+ }
+}
+
#endif // BITCOIN_TEST_FUZZ_UTIL_H