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/*
* This file is part of PowerDNS or dnsdist.
* Copyright -- PowerDNS.COM B.V. and its contributors
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* In addition, for the avoidance of any doubt, permission is granted to
* link this program with OpenSSL and to (re)distribute the binaries
* produced as the result of such linking.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#pragma once
#include <iostream>
#include <stdio.h>
#include <string>
#include "pdns/misc.hh"
#include "pdns/namespaces.hh"
class CoRemote
{
public:
virtual ~CoRemote() = default;
virtual void sendReceive(const string& send, string& receive) = 0;
virtual void receive(string& rcv) = 0;
virtual void send(const string& send) = 0;
};
class CoProcess : public CoRemote
{
public:
CoProcess(const string& command, int timeout = 0, int infd = 0, int outfd = 1);
~CoProcess() override;
void sendReceive(const string& send, string& receive) override;
void receive(string& rcv) override;
void send(const string& send) override;
void launch();
private:
void checkStatus();
std::vector<std::string> d_params;
std::vector<const char*> d_argv;
std::string d_remaining;
int d_fd1[2], d_fd2[2];
int d_pid;
int d_infd;
int d_outfd;
int d_timeout;
};
class UnixRemote : public CoRemote
{
public:
UnixRemote(const string& path);
void sendReceive(const string& send, string& receive) override;
void receive(string& rcv) override;
void send(const string& send) override;
private:
int d_fd;
pdns::UniqueFilePtr d_fp{nullptr};
};
bool isUnixSocket(const string& fname);
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