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 <test/util/time.h>
17  #include <util/fs_helpers.h>
18  #include <util/threadinterrupt.h>
19  
20  void initialize_i2p()
21  {
22      static const auto testing_setup = MakeNoLogFileContext<>();
23  }
24  
25  FUZZ_TARGET(i2p, .init = initialize_i2p)
26  {
27      SeedRandomStateForTest(SeedRand::ZEROS);
28      FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
29  
30      NodeClockContext clock_ctx{ConsumeTime(fuzzed_data_provider)};
31  
32      // Mock CreateSock() to create FuzzedSock.
33      auto CreateSockOrig = CreateSock;
34      CreateSock = [&fuzzed_data_provider](int, int, int) {
35          return std::make_unique<FuzzedSock>(fuzzed_data_provider);
36      };
37  
38      const fs::path private_key_path = gArgs.GetDataDirNet() / "fuzzed_i2p_private_key";
39      const CService addr{in6_addr(COMPAT_IN6ADDR_LOOPBACK_INIT), 7656};
40      const Proxy sam_proxy{addr, /*tor_stream_isolation=*/false};
41      auto interrupt{ConsumeThreadInterrupt(fuzzed_data_provider)};
42  
43      i2p::sam::Session session{private_key_path, sam_proxy, interrupt};
44      i2p::Connection conn;
45  
46      if (session.Listen(conn)) {
47          if (session.Accept(conn)) {
48              try {
49                  (void)conn.sock->RecvUntilTerminator('\n', 10ms, *interrupt, i2p::sam::MAX_MSG_SIZE);
50              } catch (const std::runtime_error&) {
51              }
52          }
53      }
54  
55      bool proxy_error;
56  
57      if (session.Connect(CService{}, conn, proxy_error)) {
58          try {
59              conn.sock->SendComplete("verack\n", 10ms, *interrupt);
60          } catch (const std::runtime_error&) {
61          }
62      }
63  
64      fs::remove(private_key_path);
65  
66      CreateSock = CreateSockOrig;
67  }