69 lines
1.4 KiB
C
69 lines
1.4 KiB
C
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
|
|
#include <net/gen/in.h>
|
|
#include <net/gen/tcp.h>
|
|
#include <net/gen/tcp_io.h>
|
|
#include <net/gen/udp.h>
|
|
|
|
#define DEBUG 0
|
|
|
|
static int _tcp_getpeername(int socket, struct sockaddr *_RESTRICT address,
|
|
socklen_t *_RESTRICT address_len, nwio_tcpconf_t *tcpconfp);
|
|
|
|
int getpeername(int socket, struct sockaddr *_RESTRICT address,
|
|
socklen_t *_RESTRICT address_len)
|
|
{
|
|
int r;
|
|
nwio_tcpconf_t tcpconf;
|
|
|
|
r= ioctl(socket, NWIOGTCPCONF, &tcpconf);
|
|
if (r != -1 || errno != ENOTTY)
|
|
{
|
|
if (r == -1)
|
|
{
|
|
/* Bad file descriptor */
|
|
return -1;
|
|
}
|
|
return _tcp_getpeername(socket, address, address_len,
|
|
&tcpconf);
|
|
}
|
|
|
|
#if DEBUG
|
|
fprintf(stderr, "getpeername: not implemented for fd %d\n", socket);
|
|
#endif
|
|
errno= ENOSYS;
|
|
return -1;
|
|
}
|
|
|
|
static int _tcp_getpeername(int socket, struct sockaddr *_RESTRICT address,
|
|
socklen_t *_RESTRICT address_len, nwio_tcpconf_t *tcpconfp)
|
|
{
|
|
socklen_t len;
|
|
struct sockaddr_in sin;
|
|
|
|
if (tcpconfp->nwtc_remaddr == 0 ||
|
|
tcpconfp->nwtc_remport == 0)
|
|
{
|
|
errno= ENOTCONN;
|
|
return -1;
|
|
}
|
|
|
|
memset(&sin, '\0', sizeof(sin));
|
|
sin.sin_family= AF_INET;
|
|
sin.sin_addr.s_addr= tcpconfp->nwtc_remaddr;
|
|
sin.sin_port= tcpconfp->nwtc_remport;
|
|
|
|
len= *address_len;
|
|
if (len > sizeof(sin))
|
|
len= sizeof(sin);
|
|
memcpy(address, &sin, len);
|
|
*address_len= len;
|
|
|
|
return 0;
|
|
}
|
|
|