text: // Copyright (c) 2017-2019, The MKEcoin Project
  // 
  // All rights reserved.
  // 
  // Redistribution and use in source and binary forms, with or without modification, are
  // permitted provided that the following conditions are met:
  // 
  // 1. Redistributions of source code must retain the above copyright notice, this list of
  //    conditions and the following disclaimer.
  // 
  // 2. Redistributions in binary form must reproduce the above copyright notice, this list
  //    of conditions and the following disclaimer in the documentation and/or other
  //    materials provided with the distribution.
  // 
  // 3. Neither the name of the copyright holder nor the names of its contributors may be
  //    used to endorse or promote products derived from this software without specific
  //    prior written permission.
  // 
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
  // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
  // THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  // STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
  // THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  #include "include_base_utils.h"
  #include "file_io_utils.h"
  #include "cryptonote_basic/blobdatatype.h"
  #include "cryptonote_basic/cryptonote_basic.h"
  #include "cryptonote_basic/cryptonote_format_utils.h"
  #include "wallet/wallet2.h"
  #include "fuzzer.h"
  
  class SignatureFuzzer: public Fuzzer
  {
  public:
    SignatureFuzzer(): Fuzzer(), wallet(cryptonote::TESTNET) {}
    virtual int init();
    virtual int run(const std::string &filename);
  
  private:
    tools::wallet2 wallet;
    cryptonote::account_public_address address;
  };
  
  int SignatureFuzzer::init()
  {
    static const char * const spendkey_hex = "0b4f47697ec99c3de6579304e5f25c68b07afbe55b71d99620bf6cbf4e45a80f";
    crypto::secret_key spendkey;
    epee::string_tools::hex_to_pod(spendkey_hex, spendkey);
  
    try
    {
      wallet.init("", boost::none, boost::asio::ip::tcp::endpoint{}, 0, true, epee::net_utils::ssl_support_t::e_ssl_support_disabled);
      wallet.set_subaddress_lookahead(1, 1);
      wallet.generate("", "", spendkey, true, false);
  
      cryptonote::address_parse_info info;
      if (!cryptonote::get_account_address_from_str_or_url(info, cryptonote::TESTNET, "9uVsvEryzpN8WH2t1WWhFFCG5tS8cBNdmJYNRuckLENFimfauV5pZKeS1P2CbxGkSDTUPHXWwiYE5ZGSXDAGbaZgDxobqDN"))
      {
        std::cerr << "failed to parse address" << std::endl;
        return 1;
      }
      address = info.address;
    }
    catch (const std::exception &e)
    {
      std::cerr << "Error on SignatureFuzzer::init: " << e.what() << std::endl;
      return 1;
    }
    return 0;
  }
  
  int SignatureFuzzer::run(const std::string &filename)
  {
    std::string s;
  
    if (!epee::file_io_utils::load_file_to_string(filename, s))
    {
      std::cout << "Error: failed to load file " << filename << std::endl;
      return 1;
    }
  
    bool valid = wallet.verify("test", address, s);
    std::cout << "Signature " << (valid ? "valid" : "invalid") << std::endl;
  
    return 0;
  }
  
  int main(int argc, const char **argv)
  {
    TRY_ENTRY();
    SignatureFuzzer fuzzer;
    return run_fuzzer(argc, argv, fuzzer);
    CATCH_ENTRY_L0("main", 1);
  }
  