172 lines
3.6 KiB
C
172 lines
3.6 KiB
C
/*
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getsockname()
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from socket emulation library for Minix 2.0.x
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*/
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#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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/*
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#define DEBUG 0
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*/
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static int _tcp_getsockname(int fd, struct sockaddr *__restrict address,
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socklen_t *__restrict address_len, nwio_tcpconf_t *tcpconfp);
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static int _udp_getsockname(int fd, struct sockaddr *__restrict address,
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socklen_t *__restrict address_len, nwio_udpopt_t *udpopt);
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static int _uds_getsockname(int fd, struct sockaddr *__restrict address,
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socklen_t *__restrict address_len, struct sockaddr_un *uds_addr);
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int getsockname(int fd, 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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#ifdef DEBUG
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fprintf(stderr,"mnx_getsockname: ioctl fd %d.\n", fd);
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#endif
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r= ioctl(fd, NWIOGTCPCONF, &tcpconf);
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if (r != -1 || errno != ENOTTY)
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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_getsockname(fd, address, address_len, &tcpconf);
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}
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r= ioctl(fd, NWIOGUDPOPT, &udpopt);
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if (r != -1 || errno != ENOTTY)
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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_getsockname(fd, address, address_len, &udpopt);
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}
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r= ioctl(fd, NWIOGUDSADDR, &uds_addr);
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if (r != -1 || errno != ENOTTY)
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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_getsockname(fd, address, address_len, &uds_addr);
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}
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#if DEBUG
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fprintf(stderr, "getsockname: not implemented for fd %d\n", socket);
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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_getsockname(int fd, struct sockaddr *__restrict address,
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socklen_t *__restrict address_len, nwio_tcpconf_t *tcpconf)
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{
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socklen_t len;
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struct sockaddr_in sin;
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#ifdef DEBUG1
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fprintf(stderr, "mnx_getsockname: from %s, %u",
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inet_ntoa(tcpconf->nwtc_remaddr),
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ntohs(tcpconf->nwtc_remport));
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fprintf(stderr," for %s, %u\n",
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inet_ntoa(tcpconf->nwtc_locaddr),
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ntohs(tcpconf->nwtc_locport));
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#endif
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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= tcpconf->nwtc_locaddr ;
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sin.sin_port= tcpconf->nwtc_locport;
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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_getsockname(int fd, 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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#ifdef DEBUG1
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fprintf(stderr, "mnx_getsockname: from %s, %u",
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inet_ntoa(udpopt->nwuo_remaddr),
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ntohs(udpopt->nwuo_remport));
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fprintf(stderr," for %s, %u\n",
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inet_ntoa(udpopt->nwuo_locaddr),
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ntohs(udpopt->nwuo_locport));
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#endif
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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_locaddr ;
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sin.sin_port= udpopt->nwuo_locport;
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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_getsockname(int fd, 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= EINVAL;
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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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