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merge bitcoin#18029: Add fuzzing harness for AS-mapping (asmap)

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This commit is contained in:
Kittywhiskers Van Gogh 2022-02-27 23:43:18 +05:30
parent 8dc6222163
commit c4491309dc
4 changed files with 36 additions and 1 deletions
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7
src/Makefile.test.include
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@ -8,6 +8,7 @@ FUZZ_TARGETS = \
test/fuzz/addr_info_deserialize \
test/fuzz/address_deserialize \
test/fuzz/addrman_deserialize \
test/fuzz/asmap \
test/fuzz/banentry_deserialize \
test/fuzz/base_encode_decode \
test/fuzz/bech32 \
@ -285,6 +286,12 @@ test_fuzz_addrman_deserialize_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_addrman_deserialize_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS) $(LDFLAGS_WRAP_EXCEPTIONS)
test_fuzz_addrman_deserialize_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_asmap_SOURCES = $(FUZZ_SUITE) test/fuzz/asmap.cpp
test_fuzz_asmap_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
test_fuzz_asmap_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_asmap_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS) $(LDFLAGS_WRAP_EXCEPTIONS)
test_fuzz_asmap_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_blockheader_deserialize_SOURCES = $(FUZZ_SUITE) test/fuzz/deserialize.cpp
test_fuzz_blockheader_deserialize_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) -DBLOCKHEADER_DESERIALIZE=1
test_fuzz_blockheader_deserialize_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)

1
src/netaddress.h
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@ -146,7 +146,6 @@ class CNetAddr
*/
void SetLegacyIPv6(Span<const uint8_t> ipv6);
private:
/**
* Set raw IPv4 or IPv6 address (in network byte order)
* @note Only NET_IPV4 and NET_IPV6 are allowed for network.

28
src/test/fuzz/asmap.cpp Normal file
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@ -0,0 +1,28 @@
// 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 <netaddress.h>
#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <cstdint>
#include <vector>
void test_one_input(const std::vector<uint8_t>& buffer)
{
FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
const Network network = fuzzed_data_provider.PickValueInArray({NET_IPV4, NET_IPV6});
if (fuzzed_data_provider.remaining_bytes() < 16) {
return;
}
CNetAddr net_addr;
net_addr.SetRaw(network, fuzzed_data_provider.ConsumeBytes<uint8_t>(16).data());
std::vector<bool> asmap;
for (const char cur_byte : fuzzed_data_provider.ConsumeRemainingBytes<char>()) {
for (int bit = 0; bit < 8; ++bit) {
asmap.push_back((cur_byte >> bit) & 1);
}
}
(void)net_addr.GetMappedAS(asmap);
}

1
test/fuzz/test_runner.py
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@ -15,6 +15,7 @@ import logging
# Fuzzers known to lack a seed corpus in https://github.com/bitcoin-core/qa-assets/tree/master/fuzz_seed_corpus
FUZZERS_MISSING_CORPORA = [
"addr_info_deserialize",
"asmap",
"base_encode_decode",
"block",
"block_file_info_deserialize",