1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
// Copyright (c) 2019-2020 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 <chainparams.h>
#include <compressor.h>
#include <core_io.h>
#include <core_memusage.h>
#include <policy/policy.h>
#include <pubkey.h>
#include <script/descriptor.h>
#include <script/interpreter.h>
#include <script/script.h>
#include <script/script_error.h>
#include <script/sign.h>
#include <script/signingprovider.h>
#include <script/standard.h>
#include <streams.h>
#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <test/fuzz/util.h>
#include <univalue.h>
#include <util/memory.h>
#include <algorithm>
#include <cassert>
#include <cstdint>
#include <optional>
#include <string>
#include <vector>
void initialize_script()
{
// Fuzzers using pubkey must hold an ECCVerifyHandle.
static const ECCVerifyHandle verify_handle;
SelectParams(CBaseChainParams::REGTEST);
}
FUZZ_TARGET_INIT(script, initialize_script)
{
FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
const std::optional<CScript> script_opt = ConsumeDeserializable<CScript>(fuzzed_data_provider);
if (!script_opt) return;
const CScript script{*script_opt};
std::vector<unsigned char> compressed;
if (CompressScript(script, compressed)) {
const unsigned int size = compressed[0];
compressed.erase(compressed.begin());
assert(size <= 5);
CScript decompressed_script;
const bool ok = DecompressScript(decompressed_script, size, compressed);
assert(ok);
assert(script == decompressed_script);
}
CTxDestination address;
TxoutType type_ret;
std::vector<CTxDestination> addresses;
int required_ret;
bool extract_destinations_ret = ExtractDestinations(script, type_ret, addresses, required_ret);
bool extract_destination_ret = ExtractDestination(script, address);
if (!extract_destinations_ret) {
assert(!extract_destination_ret);
if (type_ret == TxoutType::MULTISIG) {
assert(addresses.empty() && required_ret == 0);
} else {
assert(type_ret == TxoutType::PUBKEY ||
type_ret == TxoutType::NONSTANDARD ||
type_ret == TxoutType::NULL_DATA);
}
} else {
assert(required_ret >= 1 && required_ret <= 16);
assert((unsigned long)required_ret == addresses.size());
assert(type_ret == TxoutType::MULTISIG || required_ret == 1);
}
if (type_ret == TxoutType::NONSTANDARD || type_ret == TxoutType::NULL_DATA) {
assert(!extract_destinations_ret);
}
if (!extract_destination_ret) {
assert(type_ret == TxoutType::PUBKEY ||
type_ret == TxoutType::NONSTANDARD ||
type_ret == TxoutType::NULL_DATA ||
type_ret == TxoutType::MULTISIG);
} else {
assert(address == addresses[0]);
}
if (type_ret == TxoutType::NONSTANDARD ||
type_ret == TxoutType::NULL_DATA ||
type_ret == TxoutType::MULTISIG) {
assert(!extract_destination_ret);
}
TxoutType which_type;
bool is_standard_ret = IsStandard(script, which_type);
assert(type_ret == which_type);
if (!is_standard_ret) {
assert(which_type == TxoutType::NONSTANDARD ||
which_type == TxoutType::NULL_DATA ||
which_type == TxoutType::MULTISIG);
}
if (which_type == TxoutType::NONSTANDARD) {
assert(!is_standard_ret);
}
if (which_type == TxoutType::NULL_DATA) {
assert(script.IsUnspendable());
}
if (script.IsUnspendable()) {
assert(which_type == TxoutType::NULL_DATA ||
which_type == TxoutType::NONSTANDARD);
}
const FlatSigningProvider signing_provider;
(void)InferDescriptor(script, signing_provider);
(void)IsSegWitOutput(signing_provider, script);
(void)IsSolvable(signing_provider, script);
(void)RecursiveDynamicUsage(script);
std::vector<std::vector<unsigned char>> solutions;
(void)Solver(script, solutions);
(void)script.HasValidOps();
(void)script.IsPayToScriptHash();
(void)script.IsPayToWitnessScriptHash();
(void)script.IsPushOnly();
(void)script.GetSigOpCount(/* fAccurate= */ false);
(void)FormatScript(script);
(void)ScriptToAsmStr(script, false);
(void)ScriptToAsmStr(script, true);
UniValue o1(UniValue::VOBJ);
ScriptPubKeyToUniv(script, o1, true);
UniValue o2(UniValue::VOBJ);
ScriptPubKeyToUniv(script, o2, false);
UniValue o3(UniValue::VOBJ);
ScriptToUniv(script, o3, true);
UniValue o4(UniValue::VOBJ);
ScriptToUniv(script, o4, false);
{
const std::vector<uint8_t> bytes = ConsumeRandomLengthByteVector(fuzzed_data_provider);
// DecompressScript(..., ..., bytes) is not guaranteed to be defined if the bytes vector is too short
if (bytes.size() >= 32) {
CScript decompressed_script;
DecompressScript(decompressed_script, fuzzed_data_provider.ConsumeIntegral<unsigned int>(), bytes);
}
}
const std::optional<CScript> other_script = ConsumeDeserializable<CScript>(fuzzed_data_provider);
if (other_script) {
{
CScript script_mut{script};
(void)FindAndDelete(script_mut, *other_script);
}
const std::vector<std::string> random_string_vector = ConsumeRandomLengthStringVector(fuzzed_data_provider);
const uint32_t u32{fuzzed_data_provider.ConsumeIntegral<uint32_t>()};
const uint32_t flags{u32 | SCRIPT_VERIFY_P2SH};
{
CScriptWitness wit;
for (const auto& s : random_string_vector) {
wit.stack.emplace_back(s.begin(), s.end());
}
(void)CountWitnessSigOps(script, *other_script, &wit, flags);
wit.SetNull();
}
}
(void)GetOpName(ConsumeOpcodeType(fuzzed_data_provider));
(void)ScriptErrorString(static_cast<ScriptError>(fuzzed_data_provider.ConsumeIntegralInRange<int>(0, SCRIPT_ERR_ERROR_COUNT)));
{
const std::vector<uint8_t> bytes = ConsumeRandomLengthByteVector(fuzzed_data_provider);
CScript append_script{bytes.begin(), bytes.end()};
append_script << fuzzed_data_provider.ConsumeIntegral<int64_t>();
append_script << ConsumeOpcodeType(fuzzed_data_provider);
append_script << CScriptNum{fuzzed_data_provider.ConsumeIntegral<int64_t>()};
append_script << ConsumeRandomLengthByteVector(fuzzed_data_provider);
}
{
WitnessUnknown witness_unknown_1{};
witness_unknown_1.version = fuzzed_data_provider.ConsumeIntegral<int>();
const std::vector<uint8_t> witness_unknown_program_1 = fuzzed_data_provider.ConsumeBytes<uint8_t>(40);
witness_unknown_1.length = witness_unknown_program_1.size();
std::copy(witness_unknown_program_1.begin(), witness_unknown_program_1.end(), witness_unknown_1.program);
WitnessUnknown witness_unknown_2{};
witness_unknown_2.version = fuzzed_data_provider.ConsumeIntegral<int>();
const std::vector<uint8_t> witness_unknown_program_2 = fuzzed_data_provider.ConsumeBytes<uint8_t>(40);
witness_unknown_2.length = witness_unknown_program_2.size();
std::copy(witness_unknown_program_2.begin(), witness_unknown_program_2.end(), witness_unknown_2.program);
(void)(witness_unknown_1 == witness_unknown_2);
(void)(witness_unknown_1 < witness_unknown_2);
}
{
const CTxDestination tx_destination_1 = ConsumeTxDestination(fuzzed_data_provider);
const CTxDestination tx_destination_2 = ConsumeTxDestination(fuzzed_data_provider);
(void)(tx_destination_1 == tx_destination_2);
(void)(tx_destination_1 < tx_destination_2);
}
}
|