1// Copyright (c) 2022-present 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/run_command.h>
6
7#include <tinyformat.h>
8#include <univalue.h>
9#include <util/string.h>
10#include <util/subprocess.h>
11
12#include <sstream>
13#include <stdexcept>
14#include <utility>
15
16UniValue RunCommandParseJSON(const std::vector<std::string>& cmd_args, const std::string& str_std_in)
17{
18    namespace sp = subprocess;
19
20    UniValue result_json;
21    std::istringstream stdout_stream;
22    std::istringstream stderr_stream;
23
24    if (cmd_args.empty()) return UniValue::VNULL;
25
26    auto c = sp::Popen(cmd_args, sp::input{sp::PIPE}, sp::output{sp::PIPE}, sp::error{sp::PIPE});
27    if (!str_std_in.empty()) {
28        c.send(str_std_in);
29    }
30    auto [out_res, err_res] = c.communicate();
31    stdout_stream.str(std::string{out_res.buf.begin(), out_res.buf.end()});
32    stderr_stream.str(std::string{err_res.buf.begin(), err_res.buf.end()});
33
34    std::string result;
35    std::string error;
36    std::getline(stdout_stream, result);
37    std::getline(stderr_stream, error);
38
39    const int n_error = c.retcode();
40    if (n_error) throw std::runtime_error(strprintf("RunCommandParseJSON error: process(%s) returned %d: %s\n", util::Join(cmd_args, " "), n_error, error));
41    if (!result_json.read(result)) throw std::runtime_error("Unable to parse JSON: " + result);
42
43    return result_json;
44}
45