mirror of
https://github.com/moparisthebest/curl
synced 2024-11-05 00:55:04 -05:00
122 lines
3.3 KiB
C
122 lines
3.3 KiB
C
/***************************************************************************
|
|
* _ _ ____ _
|
|
* Project ___| | | | _ \| |
|
|
* / __| | | | |_) | |
|
|
* | (__| |_| | _ <| |___
|
|
* \___|\___/|_| \_\_____|
|
|
*
|
|
* Copyright (C) 2019 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
|
|
*
|
|
* This software is licensed as described in the file COPYING, which
|
|
* you should have received as part of this distribution. The terms
|
|
* are also available at https://curl.haxx.se/docs/copyright.html.
|
|
*
|
|
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
|
* copies of the Software, and permit persons to whom the Software is
|
|
* furnished to do so, under the terms of the COPYING file.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
***************************************************************************/
|
|
|
|
#include "curl_setup.h"
|
|
#include "socketpair.h"
|
|
|
|
#if !defined(HAVE_SOCKETPAIR) && !defined(CURL_DISABLE_SOCKETPAIR)
|
|
#ifdef WIN32
|
|
/*
|
|
* This is a socketpair() implementation for Windows.
|
|
*/
|
|
#include <string.h>
|
|
#include <winsock2.h>
|
|
#include <ws2tcpip.h>
|
|
#include <windows.h>
|
|
#include <io.h>
|
|
#else
|
|
#ifdef HAVE_NETDB_H
|
|
#include <netdb.h>
|
|
#endif
|
|
#ifdef HAVE_NETINET_IN_H
|
|
#include <netinet/in.h> /* IPPROTO_TCP */
|
|
#endif
|
|
#ifdef HAVE_ARPA_INET_H
|
|
#include <arpa/inet.h>
|
|
#endif
|
|
#ifndef INADDR_LOOPBACK
|
|
#define INADDR_LOOPBACK 0x7f000001
|
|
#endif /* !INADDR_LOOPBACK */
|
|
#endif /* !WIN32 */
|
|
|
|
/* The last 3 #include files should be in this order */
|
|
#include "curl_printf.h"
|
|
#include "curl_memory.h"
|
|
#include "memdebug.h"
|
|
|
|
int Curl_socketpair(int domain, int type, int protocol,
|
|
curl_socket_t socks[2])
|
|
{
|
|
union {
|
|
struct sockaddr_in inaddr;
|
|
struct sockaddr addr;
|
|
} a;
|
|
curl_socket_t listener;
|
|
curl_socklen_t addrlen = sizeof(a.inaddr);
|
|
int reuse = 1;
|
|
char data[2][12];
|
|
ssize_t dlen;
|
|
(void)domain;
|
|
(void)type;
|
|
(void)protocol;
|
|
|
|
listener = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
|
|
if(listener == CURL_SOCKET_BAD)
|
|
return -1;
|
|
|
|
memset(&a, 0, sizeof(a));
|
|
a.inaddr.sin_family = AF_INET;
|
|
a.inaddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
|
|
a.inaddr.sin_port = 0;
|
|
|
|
socks[0] = socks[1] = CURL_SOCKET_BAD;
|
|
|
|
if(setsockopt(listener, SOL_SOCKET, SO_REUSEADDR,
|
|
(char *)&reuse, (curl_socklen_t)sizeof(reuse)) == -1)
|
|
goto error;
|
|
if(bind(listener, &a.addr, sizeof(a.inaddr)) == -1)
|
|
goto error;
|
|
if(getsockname(listener, &a.addr, &addrlen) == -1)
|
|
goto error;
|
|
if(listen(listener, 1) == -1)
|
|
goto error;
|
|
socks[0] = socket(AF_INET, SOCK_STREAM, 0);
|
|
if(socks[0] == CURL_SOCKET_BAD)
|
|
goto error;
|
|
if(connect(socks[0], &a.addr, sizeof(a.inaddr)) == -1)
|
|
goto error;
|
|
socks[1] = accept(listener, NULL, NULL);
|
|
if(socks[1] == CURL_SOCKET_BAD)
|
|
goto error;
|
|
|
|
/* verify that nothing else connected */
|
|
msnprintf(data[0], sizeof(data[0]), "%p", socks);
|
|
dlen = strlen(data[0]);
|
|
if(swrite(socks[0], data[0], dlen) != dlen)
|
|
goto error;
|
|
if(sread(socks[1], data[1], sizeof(data[1])) != dlen)
|
|
goto error;
|
|
if(memcmp(data[0], data[1], dlen))
|
|
goto error;
|
|
|
|
sclose(listener);
|
|
return 0;
|
|
|
|
error:
|
|
sclose(listener);
|
|
sclose(socks[0]);
|
|
sclose(socks[1]);
|
|
return -1;
|
|
}
|
|
|
|
#endif /* ! HAVE_SOCKETPAIR */
|