run_command.cpp raw

   1  // Copyright (c) 2022 The Limenka 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 <limenka-build-config.h> // IWYU pragma: keep
   6  
   7  #include <common/run_command.h>
   8  
   9  #include <tinyformat.h>
  10  #include <univalue.h>
  11  
  12  #ifdef ENABLE_EXTERNAL_SIGNER
  13  #include <util/subprocess.h>
  14  #endif // ENABLE_EXTERNAL_SIGNER
  15  
  16  UniValue RunCommandParseJSON(const std::string& str_command, const std::string& str_std_in)
  17  {
  18  #ifdef ENABLE_EXTERNAL_SIGNER
  19      namespace sp = subprocess;
  20  
  21      UniValue result_json;
  22      std::istringstream stdout_stream;
  23      std::istringstream stderr_stream;
  24  
  25      if (str_command.empty()) return UniValue::VNULL;
  26  
  27      auto c = sp::Popen(str_command, sp::input{sp::PIPE}, sp::output{sp::PIPE}, sp::error{sp::PIPE}, sp::close_fds{true});
  28      if (!str_std_in.empty()) {
  29          c.send(str_std_in);
  30      }
  31      auto [out_res, err_res] = c.communicate();
  32      stdout_stream.str(std::string{out_res.buf.begin(), out_res.buf.end()});
  33      stderr_stream.str(std::string{err_res.buf.begin(), err_res.buf.end()});
  34  
  35      std::string result;
  36      std::string error;
  37      std::getline(stdout_stream, result);
  38      std::getline(stderr_stream, error);
  39  
  40      const int n_error = c.retcode();
  41      if (n_error) throw std::runtime_error(strprintf("RunCommandParseJSON error: process(%s) returned %d: %s\n", str_command, n_error, error));
  42      if (!result_json.read(result)) throw std::runtime_error("Unable to parse JSON: " + result);
  43  
  44      return result_json;
  45  #else
  46      throw std::runtime_error("Compiled without external signing support (required for external signing).");
  47  #endif // ENABLE_EXTERNAL_SIGNER
  48  }
  49