src/lib/ip/getsockname.c

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/*

   getsockname()

   from socket emulation library for Minix 2.0.x

*/


#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
*/

/*
   getsockname...
*/
int getsockname(int fd, struct sockaddr *_RESTRICT address, 
   socklen_t *_RESTRICT address_len)
{
        nwio_tcpconf_t tcpconf;
        socklen_t len;
        struct sockaddr_in sin;

#ifdef DEBUG
        fprintf(stderr,"mnx_getsockname: ioctl fd %d.\n", fd);
#endif
        if (ioctl(fd, NWIOGTCPCONF, &tcpconf)==-1) {
#ifdef DEBUG
           fprintf(stderr,"mnx_getsockname: error %d\n", errno);
#endif
           return (-1);
           }
#ifdef DEBUG1
        fprintf(stderr, "mnx_getsockname: from %s, %u",
                        inet_ntoa(tcpconf.nwtc_remaddr),
                        ntohs(tcpconf.nwtc_remport));
        fprintf(stderr," for %s, %u\n",
                        inet_ntoa(tcpconf.nwtc_locaddr),
                        ntohs(tcpconf.nwtc_locport));
#endif
/*
        addr->sin_addr.s_addr = tcpconf.nwtc_remaddr ;
        addr->sin_port = tcpconf.nwtc_locport;
*/
        memset(&sin, '\0', sizeof(sin));
        sin.sin_family= AF_INET;
        sin.sin_addr.s_addr= tcpconf.nwtc_locaddr ;
        sin.sin_port= tcpconf.nwtc_locport;

        len= *address_len;
        if (len > sizeof(sin))
                len= sizeof(sin);
        memcpy(address, &sin, len);
        *address_len= len;

        return 0;
}

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