1  // Copyright (c) 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 <common/args.h>
 6  #include <compat/compat.h>
 7  #include <i2p.h>
 8  #include <netaddress.h>
 9  #include <netbase.h>
10  #include <test/fuzz/FuzzedDataProvider.h>
11  #include <test/fuzz/fuzz.h>
12  #include <test/fuzz/util.h>
13  #include <test/fuzz/util/net.h>
14  #include <test/fuzz/util/threadinterrupt.h>
15  #include <test/util/setup_common.h>
16  #include <util/fs_helpers.h>
17  #include <util/threadinterrupt.h>
18  
19  void initialize_i2p()
20  {
21      static const auto testing_setup = MakeNoLogFileContext<>();
22  }
23  
24  FUZZ_TARGET(i2p, .init = initialize_i2p)
25  {
26      SeedRandomStateForTest(SeedRand::ZEROS);
27      FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
28  
29      SetMockTime(ConsumeTime(fuzzed_data_provider));
30  
31      // Mock CreateSock() to create FuzzedSock.
32      auto CreateSockOrig = CreateSock;
33      CreateSock = [&fuzzed_data_provider](int, int, int) {
34          return std::make_unique<FuzzedSock>(fuzzed_data_provider);
35      };
36  
37      const fs::path private_key_path = gArgs.GetDataDirNet() / "fuzzed_i2p_private_key";
38      const CService addr{in6_addr(COMPAT_IN6ADDR_LOOPBACK_INIT), 7656};
39      const Proxy sam_proxy{addr, /*tor_stream_isolation=*/false};
40      auto interrupt{ConsumeThreadInterrupt(fuzzed_data_provider)};
41  
42      i2p::sam::Session session{private_key_path, sam_proxy, interrupt};
43      i2p::Connection conn;
44  
45      if (session.Listen(conn)) {
46          if (session.Accept(conn)) {
47              try {
48                  (void)conn.sock->RecvUntilTerminator('\n', 10ms, *interrupt, i2p::sam::MAX_MSG_SIZE);
49              } catch (const std::runtime_error&) {
50              }
51          }
52      }
53  
54      bool proxy_error;
55  
56      if (session.Connect(CService{}, conn, proxy_error)) {
57          try {
58              conn.sock->SendComplete("verack\n", 10ms, *interrupt);
59          } catch (const std::runtime_error&) {
60          }
61      }
62  
63      fs::remove_all(private_key_path);
64  
65      CreateSock = CreateSockOrig;
66  }