155 lines
3.2 KiB
C
155 lines
3.2 KiB
C
#include <sys/cdefs.h>
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#include "namespace.h"
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <net/gen/in.h>
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#include <net/gen/tcp.h>
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#include <net/gen/tcp_io.h>
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#include <net/gen/udp.h>
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#include <net/gen/udp_io.h>
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#include <sys/un.h>
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#define DEBUG 0
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static int _tcp_getpeername(int sock, struct sockaddr *__restrict address,
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socklen_t *__restrict address_len, nwio_tcpconf_t *tcpconfp);
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static int _udp_getpeername(int sock, struct sockaddr *__restrict address,
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socklen_t *__restrict address_len, nwio_udpopt_t *tcpconfp);
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static int _uds_getpeername(int sock, struct sockaddr *__restrict address,
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socklen_t *__restrict address_len, struct sockaddr_un *uds_addr);
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int getpeername(int sock, struct sockaddr *__restrict address,
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socklen_t *__restrict address_len)
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{
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int r;
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nwio_tcpconf_t tcpconf;
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nwio_udpopt_t udpopt;
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struct sockaddr_un uds_addr;
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r= ioctl(sock, NWIOGTCPCONF, &tcpconf);
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if (r != -1 || (errno != ENOTTY && errno != EBADIOCTL))
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{
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if (r == -1)
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{
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/* Bad file descriptor */
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return -1;
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}
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return _tcp_getpeername(sock, address, address_len,
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&tcpconf);
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}
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r= ioctl(sock, NWIOGUDPOPT, &udpopt);
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if (r != -1 || (errno != ENOTTY && errno != EBADIOCTL))
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{
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if (r == -1)
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{
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/* Bad file descriptor */
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return -1;
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}
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return _udp_getpeername(sock, address, address_len,
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&udpopt);
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}
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r= ioctl(sock, NWIOGUDSPADDR, &uds_addr);
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if (r != -1 || (errno != ENOTTY && errno != EBADIOCTL))
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{
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if (r == -1)
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{
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/* Bad file descriptor */
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return -1;
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}
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return _uds_getpeername(sock, address, address_len,
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&uds_addr);
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}
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#if DEBUG
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fprintf(stderr, "getpeername: not implemented for fd %d\n", sock);
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#endif
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errno= ENOSYS;
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return -1;
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}
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static int _tcp_getpeername(int sock, struct sockaddr *__restrict address,
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socklen_t *__restrict address_len, nwio_tcpconf_t *tcpconfp)
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{
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socklen_t len;
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struct sockaddr_in sin;
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if (tcpconfp->nwtc_remaddr == 0 ||
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tcpconfp->nwtc_remport == 0)
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{
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errno= ENOTCONN;
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return -1;
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}
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memset(&sin, '\0', sizeof(sin));
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sin.sin_family= AF_INET;
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sin.sin_addr.s_addr= tcpconfp->nwtc_remaddr;
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sin.sin_port= tcpconfp->nwtc_remport;
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len= *address_len;
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if (len > sizeof(sin))
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len= sizeof(sin);
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memcpy(address, &sin, len);
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*address_len= len;
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return 0;
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}
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static int _udp_getpeername(int sock, struct sockaddr *__restrict address,
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socklen_t *__restrict address_len, nwio_udpopt_t *udpopt)
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{
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socklen_t len;
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struct sockaddr_in sin;
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if (udpopt->nwuo_remaddr == 0 ||
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udpopt->nwuo_remport == 0)
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{
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errno= ENOTCONN;
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return -1;
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}
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memset(&sin, '\0', sizeof(sin));
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sin.sin_family= AF_INET;
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sin.sin_addr.s_addr= udpopt->nwuo_remaddr;
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sin.sin_port= udpopt->nwuo_remport;
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len= *address_len;
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if (len > sizeof(sin))
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len= sizeof(sin);
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memcpy(address, &sin, len);
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*address_len= len;
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return 0;
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}
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static int _uds_getpeername(int sock, struct sockaddr *__restrict address,
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socklen_t *__restrict address_len, struct sockaddr_un *uds_addr)
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{
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socklen_t len;
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if (uds_addr->sun_family != AF_UNIX)
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{
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errno= ENOTCONN;
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return -1;
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}
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len= *address_len;
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if (len > sizeof(struct sockaddr_un))
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len = sizeof(struct sockaddr_un);
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memcpy(address, uds_addr, len);
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*address_len= len;
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return 0;
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}
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