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 <i2p.h>
 7  #include <netaddress.h>
 8  #include <netbase.h>
 9  #include <test/fuzz/FuzzedDataProvider.h>
10  #include <test/fuzz/fuzz.h>
11  #include <test/fuzz/util.h>
12  #include <test/fuzz/util/net.h>
13  #include <test/util/setup_common.h>
14  #include <util/fs_helpers.h>
15  #include <util/threadinterrupt.h>
16  
17  void initialize_i2p()
18  {
19      static const auto testing_setup = MakeNoLogFileContext<>();
20  }
21  
22  FUZZ_TARGET(i2p, .init = initialize_i2p)
23  {
24      SeedRandomStateForTest(SeedRand::ZEROS);
25      FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
26  
27      SetMockTime(ConsumeTime(fuzzed_data_provider));
28  
29      // Mock CreateSock() to create FuzzedSock.
30      auto CreateSockOrig = CreateSock;
31      CreateSock = [&fuzzed_data_provider](int, int, int) {
32          return std::make_unique<FuzzedSock>(fuzzed_data_provider);
33      };
34  
35      const fs::path private_key_path = gArgs.GetDataDirNet() / "fuzzed_i2p_private_key";
36      const CService addr{in6_addr(IN6ADDR_LOOPBACK_INIT), 7656};
37      const Proxy sam_proxy{addr, /*tor_stream_isolation=*/false};
38      CThreadInterrupt interrupt;
39  
40      i2p::sam::Session session{private_key_path, sam_proxy, &interrupt};
41      i2p::Connection conn;
42  
43      if (session.Listen(conn)) {
44          if (session.Accept(conn)) {
45              try {
46                  (void)conn.sock->RecvUntilTerminator('\n', 10ms, interrupt, i2p::sam::MAX_MSG_SIZE);
47              } catch (const std::runtime_error&) {
48              }
49          }
50      }
51  
52      bool proxy_error;
53  
54      if (session.Connect(CService{}, conn, proxy_error)) {
55          try {
56              conn.sock->SendComplete("verack\n", 10ms, interrupt);
57          } catch (const std::runtime_error&) {
58          }
59      }
60  
61      fs::remove_all(private_key_path);
62  
63      CreateSock = CreateSockOrig;
64  }