Bitcoin Core  27.99.0
P2P Digital Currency
socks5.cpp
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1 // Copyright (c) 2020-2022 The Bitcoin Core developers
2 // Distributed under the MIT software license, see the accompanying
3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 
5 #include <netaddress.h>
6 #include <netbase.h>
8 #include <test/fuzz/fuzz.h>
9 #include <test/fuzz/util.h>
10 #include <test/fuzz/util/net.h>
11 #include <test/util/setup_common.h>
12 
13 #include <cstdint>
14 #include <string>
15 #include <vector>
16 
17 extern std::chrono::milliseconds g_socks5_recv_timeout;
18 
19 namespace {
20 decltype(g_socks5_recv_timeout) default_socks5_recv_timeout;
21 };
22 
24 {
25  static const auto testing_setup = MakeNoLogFileContext<const BasicTestingSetup>();
26  default_socks5_recv_timeout = g_socks5_recv_timeout;
27 }
28 
30 {
31  FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
32  ProxyCredentials proxy_credentials;
33  proxy_credentials.username = fuzzed_data_provider.ConsumeRandomLengthString(512);
34  proxy_credentials.password = fuzzed_data_provider.ConsumeRandomLengthString(512);
35  if (fuzzed_data_provider.ConsumeBool()) {
37  }
38  // Set FUZZED_SOCKET_FAKE_LATENCY=1 to exercise recv timeout code paths. This
39  // will slow down fuzzing.
40  g_socks5_recv_timeout = (fuzzed_data_provider.ConsumeBool() && std::getenv("FUZZED_SOCKET_FAKE_LATENCY") != nullptr) ? 1ms : default_socks5_recv_timeout;
41  FuzzedSock fuzzed_sock = ConsumeSock(fuzzed_data_provider);
42  // This Socks5(...) fuzzing harness would have caught CVE-2017-18350 within
43  // a few seconds of fuzzing.
44  (void)Socks5(fuzzed_data_provider.ConsumeRandomLengthString(512),
45  fuzzed_data_provider.ConsumeIntegral<uint16_t>(),
46  fuzzed_data_provider.ConsumeBool() ? &proxy_credentials : nullptr,
47  fuzzed_sock);
48 }
Definition: net.h:38
CThreadInterrupt g_socks5_interrupt
Interrupt SOCKS5 reads or writes.
Definition: netbase.cpp:41
bool Socks5(const std::string &strDest, uint16_t port, const ProxyCredentials *auth, const Sock &sock)
Connect to a specified destination service through an already connected SOCKS5 proxy.
Definition: netbase.cpp:361
std::chrono::milliseconds g_socks5_recv_timeout
Definition: netbase.cpp:40
void initialize_socks5()
Definition: socks5.cpp:23
FUZZ_TARGET(socks5,.init=initialize_socks5)
Definition: socks5.cpp:29
Credentials for proxy authentication.
Definition: netbase.h:93
std::string username
Definition: netbase.h:94
std::string password
Definition: netbase.h:95
FuzzedSock ConsumeSock(FuzzedDataProvider &fuzzed_data_provider)
Definition: net.h:91