#ifdef _LINUX_
#define _BSD_SOURCE 1
#define __FAVOR_BSD 1
#endif
#include <sys/param.h>
#include <sys/file.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/time.h>
#if __STDC__
struct mbuf;
struct rtentry;
#endif
#include <net/if.h>
#include <netinet/in.h>
#include <ctype.h>
#include <errno.h>
#include <memory.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#ifdef _SOLARIS_
#include <stropts.h>
#include <sys/sockio.h>
#include "solaris.h"
#endif /* _SOLARIS_ */
#define MAX_IPADDR 32
#include "ifaddrlist.h"
int
ifaddrlist(register struct ifaddrlist **ipaddrp, register char *errbuf)
{
register int fd, nipaddr;
#ifdef HAVE_SOCKADDR_SA_LEN
register int n;
#endif
register struct ifreq *ifrp, *ifend, *ifnext, *mp;
register struct sockaddr_in *sin;
register struct ifaddrlist *al;
struct ifconf ifc;
struct ifreq ibuf[MAX_IPADDR], ifr;
char device[sizeof(ifr.ifr_name) + 1];
static struct ifaddrlist ifaddrlist[MAX_IPADDR];
(void)memset(device,0,sizeof(device));
fd = socket(AF_INET, SOCK_DGRAM, 0);
if (fd < 0)
{
(void)sprintf(errbuf, "socket: %s", strerror(errno));
return (-1);
}
ifc.ifc_len = sizeof(ibuf);
ifc.ifc_buf = (caddr_t)ibuf;
if (ioctl(fd,
SIOCGIFCONF,
(char *)&ifc) < 0 || ifc.ifc_len < sizeof(struct ifreq))
{
(void)sprintf(errbuf, "SIOCGIFCONF: %s", strerror(errno));
(void)close(fd);
return (-1);
}
ifrp = ibuf;
ifend = (struct ifreq *)((char *)ibuf + ifc.ifc_len);
al = ifaddrlist;
mp = NULL;
nipaddr = 0;
for (; ifrp < ifend; ifrp = ifnext)
{
#ifdef HAVE_SOCKADDR_SA_LEN
n = ifrp->ifr_addr.sa_len + sizeof(ifrp->ifr_name);
if (n < sizeof(*ifrp))
{
ifnext = ifrp + 1;
}
else
{
ifnext = (struct ifreq *)((char *)ifrp + n);
}
if (ifrp->ifr_addr.sa_family != AF_INET) continue;
#else
ifnext = ifrp + 1;
#endif
strncpy(ifr.ifr_name, ifrp->ifr_name, sizeof(ifr.ifr_name));
if (ioctl(fd, SIOCGIFFLAGS, (char *)&ifr) < 0)
{
if (errno == ENXIO) continue;
(void)sprintf(errbuf,
"SIOCGIFFLAGS: %.*s: %s",
(int)sizeof(ifr.ifr_name),
ifr.ifr_name,
strerror(errno));
(void)close(fd);
return (-1);
}
if ((ifr.ifr_flags & IFF_UP) == 0) continue;
(void)strncpy(device, ifr.ifr_name, sizeof(ifr.ifr_name));
device[sizeof(device) - 1] = '\0';
if (ioctl(fd, SIOCGIFADDR, (char *)&ifr) < 0)
{
sprintf(errbuf, "SIOCGIFADDR: %s: %s", device, strerror(errno));
close(fd);
return (-1);
}
sin = (struct sockaddr_in *)&ifr.ifr_addr;
al->addr = ntohl(sin->sin_addr.s_addr);
al->device = strdup(device);
al->len = strlen(device);
++al;
++nipaddr;
}
(void)close(fd);
*ipaddrp = ifaddrlist;
return (nipaddr);
}