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/* w32-afunix.c - AF_UNIX emulation for Windows (Client only).
* Copyright (C) 2004, 2006 g10 Code GmbH
*
* This file is part of JNLIB.
*
* JNLIB is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 3 of
* the License, or (at your option) any later version.
*
* JNLIB 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/* Use of this code is preprecated - you better use the sockt wrappers
from libassuan. */
#ifdef _WIN32
#include <stdio.h>
#include <stdlib.h>
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <io.h>
#include <errno.h>
#include "w32-afunix.h"
/* The buffer for NONCE needs to be at least 16 bytes. Returns 0 on
success. */
static int
read_port_and_nonce (const char *fname, unsigned short *port, char *nonce)
{
FILE *fp;
char buffer[50], *p;
size_t nread;
int aval;
fp = fopen (fname, "rb");
if (!fp)
return -1;
nread = fread (buffer, 1, sizeof buffer - 1, fp);
fclose (fp);
if (!nread)
{
errno = ENOFILE;
return -1;
}
buffer[nread] = 0;
aval = atoi (buffer);
if (aval < 1 || aval > 65535)
{
errno = EINVAL;
return -1;
}
*port = (unsigned int)aval;
for (p=buffer; nread && *p != '\n'; p++, nread--)
;
if (*p != '\n' || nread != 17)
{
errno = EINVAL;
return -1;
}
p++; nread--;
memcpy (nonce, p, 16);
return 0;
}
int
_w32_close (int fd)
{
int rc = closesocket (fd);
if (rc && WSAGetLastError () == WSAENOTSOCK)
rc = close (fd);
return rc;
}
int
_w32_sock_new (int domain, int type, int proto)
{
if (domain == AF_UNIX || domain == AF_LOCAL)
domain = AF_INET;
return socket (domain, type, proto);
}
int
_w32_sock_connect (int sockfd, struct sockaddr *addr, int addrlen)
{
struct sockaddr_in myaddr;
struct sockaddr_un *unaddr;
unsigned short port;
char nonce[16];
int ret;
(void)addrlen;
unaddr = (struct sockaddr_un *)addr;
if (read_port_and_nonce (unaddr->sun_path, &port, nonce))
return -1;
myaddr.sin_family = AF_INET;
myaddr.sin_port = htons (port);
myaddr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
/* Set return values. */
unaddr->sun_family = myaddr.sin_family;
unaddr->sun_port = myaddr.sin_port;
unaddr->sun_addr.s_addr = myaddr.sin_addr.s_addr;
ret = connect (sockfd, (struct sockaddr *)&myaddr, sizeof myaddr);
if (!ret)
{
/* Send the nonce. */
ret = send (sockfd, nonce, 16, 0);
if (ret >= 0 && ret != 16)
{
errno = EIO;
ret = -1;
}
}
return ret;
}
#endif /*_WIN32*/
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