#include <stdio.h>

#include <string.h>

#include <stdlib.h>

#include <fcntl.h>

#include <ifaddrs.h>

#include <sys/ioctl.h>

#include <sys/socket.h>

#include <sys/types.h>

#include <netinet/in.h>

#include <net/gen/in.h>

#include <net/gen/ip_io.h>

#include <net/gen/tcp.h>

#include <net/gen/udp.h>

int

getifaddrs(struct ifaddrs **ifap)

{

static int fd = -1;

nwio_ipconf_t ipconf;

int flags, err, r;

static struct ifaddrs ifa;

static struct sockaddr_in addr, netmask;

memset(&ifa, 0, sizeof(ifa));

memset(&addr, 0, sizeof(addr));

memset(&netmask, 0, sizeof(netmask));

ifa.ifa_next = NULL;

ifa.ifa_name = "ip";

addr.sin_family = netmask.sin_family = AF_INET;

ifa.ifa_addr = (struct sockaddr *) &addr;

ifa.ifa_netmask = (struct sockaddr *) &netmask;

addr.sin_addr.s_addr = 0;

netmask.sin_addr.s_addr = 0;

if(fd < 0) {

char *ipd;

if(!(ipd=getenv("IP_DEVICE")))

ipd="/dev/ip";

if((fd = open(ipd, O_RDWR)) < 0)

return -1;

}

/* Code taken from commands/simple/ifconfig.c. */

if((flags = fcntl(fd, F_GETFL)) < 0 ||

fcntl(fd, F_SETFL, flags | O_NONBLOCK) < 0 ||

ioctl(fd, NWIOGIPCONF, &ipconf))

return 0; /* Report interface as down. */

addr.sin_addr.s_addr = ipconf.nwic_ipaddr;

netmask.sin_addr.s_addr = ipconf.nwic_netmask;

if(addr.sin_addr.s_addr) ifa.ifa_flags = IFF_UP;

/* Just report on this interface. */

*ifap = &ifa;

return 0;

}

void

freeifaddrs(struct ifaddrs *ifp)

{

/* getifaddrs points to static data, so no need to free. */

;

}