forked from bitcoin/bitcoin
-
Notifications
You must be signed in to change notification settings - Fork 0
/
buffered_file.cpp
64 lines (61 loc) · 2.51 KB
/
buffered_file.cpp
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
// Copyright (c) 2020-2022 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 <streams.h>
#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <test/fuzz/util.h>
#include <array>
#include <cstdint>
#include <iostream>
#include <optional>
#include <string>
#include <vector>
FUZZ_TARGET(buffered_file)
{
FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
FuzzedFileProvider fuzzed_file_provider = ConsumeFile(fuzzed_data_provider);
std::optional<BufferedFile> opt_buffered_file;
CAutoFile fuzzed_file{fuzzed_file_provider.open(), 0};
try {
opt_buffered_file.emplace(fuzzed_file, fuzzed_data_provider.ConsumeIntegralInRange<uint64_t>(0, 4096), fuzzed_data_provider.ConsumeIntegralInRange<uint64_t>(0, 4096));
} catch (const std::ios_base::failure&) {
}
if (opt_buffered_file && !fuzzed_file.IsNull()) {
bool setpos_fail = false;
LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 10000) {
CallOneOf(
fuzzed_data_provider,
[&] {
std::array<std::byte, 4096> arr{};
try {
opt_buffered_file->read({arr.data(), fuzzed_data_provider.ConsumeIntegralInRange<size_t>(0, 4096)});
} catch (const std::ios_base::failure&) {
}
},
[&] {
opt_buffered_file->SetLimit(fuzzed_data_provider.ConsumeIntegralInRange<uint64_t>(0, 4096));
},
[&] {
if (!opt_buffered_file->SetPos(fuzzed_data_provider.ConsumeIntegralInRange<uint64_t>(0, 4096))) {
setpos_fail = true;
}
},
[&] {
if (setpos_fail) {
// Calling FindByte(...) after a failed SetPos(...) call may result in an infinite loop.
return;
}
try {
opt_buffered_file->FindByte(std::byte(fuzzed_data_provider.ConsumeIntegral<uint8_t>()));
} catch (const std::ios_base::failure&) {
}
},
[&] {
ReadFromStream(fuzzed_data_provider, *opt_buffered_file);
});
}
opt_buffered_file->GetPos();
opt_buffered_file->GetVersion();
}
}