LCOV - code coverage report
Current view: top level - src/test/fuzz - socks5.cpp (source / functions) Hit Total Coverage
Test: fuzz_coverage.info Lines: 20 20 100.0 %
Date: 2023-10-05 15:40:34 Functions: 8 8 100.0 %
Branches: 23 44 52.3 %

           Branch data     Line data    Source code
       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>
       7                 :            : #include <test/fuzz/FuzzedDataProvider.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         [ +  - ]:        173 : extern std::chrono::milliseconds g_socks5_recv_timeout;
      18         [ +  - ]:        173 : 
      19                 :            : namespace {
      20                 :            : decltype(g_socks5_recv_timeout) default_socks5_recv_timeout;
      21                 :            : };
      22                 :            : 
      23                 :          1 : void initialize_socks5()
      24                 :            : {
      25   [ +  -  -  +  :          1 :     static const auto testing_setup = MakeNoLogFileContext<const BasicTestingSetup>();
                   +  - ]
      26                 :          1 :     default_socks5_recv_timeout = g_socks5_recv_timeout;
      27                 :          1 : }
      28                 :            : 
      29   [ +  -  -  + ]:        419 : FUZZ_TARGET(socks5, .init = initialize_socks5)
      30                 :            : {
      31                 :         73 :     FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
      32                 :         73 :     ProxyCredentials proxy_credentials;
      33         [ +  - ]:         73 :     proxy_credentials.username = fuzzed_data_provider.ConsumeRandomLengthString(512);
      34         [ +  - ]:         73 :     proxy_credentials.password = fuzzed_data_provider.ConsumeRandomLengthString(512);
      35   [ +  -  +  - ]:         73 :     InterruptSocks5(fuzzed_data_provider.ConsumeBool());
      36                 :            :     // Set FUZZED_SOCKET_FAKE_LATENCY=1 to exercise recv timeout code paths. This
      37                 :            :     // will slow down fuzzing.
      38   [ +  -  +  +  :         73 :     g_socks5_recv_timeout = (fuzzed_data_provider.ConsumeBool() && std::getenv("FUZZED_SOCKET_FAKE_LATENCY") != nullptr) ? 1ms : default_socks5_recv_timeout;
             -  +  #  # ]
      39         [ +  - ]:         73 :     FuzzedSock fuzzed_sock = ConsumeSock(fuzzed_data_provider);
      40                 :            :     // This Socks5(...) fuzzing harness would have caught CVE-2017-18350 within
      41                 :            :     // a few seconds of fuzzing.
      42   [ -  +  +  - ]:        146 :     (void)Socks5(fuzzed_data_provider.ConsumeRandomLengthString(512),
      43         [ +  - ]:         73 :                  fuzzed_data_provider.ConsumeIntegral<uint16_t>(),
      44   [ +  -  +  + ]:         73 :                  fuzzed_data_provider.ConsumeBool() ? &proxy_credentials : nullptr,
      45                 :            :                  fuzzed_sock);
      46                 :         73 : }

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