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/* @(#)get_myaddress.c 2.1 88/07/29 4.0 RPCSRC */
/*
* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
* unrestricted use provided that this legend is included on all tape
* media and as a part of the software program in whole or part. Users
* may copy or modify Sun RPC without charge, but are not authorized
* to license or distribute it to anyone else except as part of a product or
* program developed by the user.
*
* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
*
* Sun RPC is provided with no support and without any obligation on the
* part of Sun Microsystems, Inc. to assist in its use, correction,
* modification or enhancement.
*
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
* OR ANY PART THEREOF.
*
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
* or profits or other special, indirect and consequential damages, even if
* Sun has been advised of the possibility of such damages.
*
* Sun Microsystems, Inc.
* 2550 Garcia Avenue
* Mountain View, California 94043
*/
#if !defined(lint) && defined(SCCSIDS)
static char sccsid[] = "@(#)get_myaddress.c 1.4 87/08/11 Copyr 1984 Sun Micro";
#endif
/*
* get_myaddress.c
*
* Get client's IP address via ioctl. This avoids using the yellowpages.
* Copyright (C) 1984, Sun Microsystems, Inc.
*/
#ifdef GSSAPI_KRB5
#include <rpc/types.h>
#include <rpc/pmap_prot.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <krb5.h>
/*
* don't use gethostbyname, which would invoke yellow pages
*/
get_myaddress(addr)
struct sockaddr_in *addr;
{
krb5_address **addrs, **a;
int ret;
/* Hack! krb5_os_localaddr does not use the context arg! */
if (ret = krb5_os_localaddr(NULL, &addrs)) {
com_err("get_myaddress", ret, "calling krb5_os_localaddr");
exit(1);
}
a = addrs;
while (*a) {
if ((*a)->addrtype == ADDRTYPE_INET) {
memset(addr, 0, sizeof(*addr));
addr->sin_family = AF_INET;
addr->sin_port = htons(PMAPPORT);
memcpy(&addr->sin_addr, (*a)->contents, sizeof(addr->sin_addr));
break;
}
a++;
}
if (*a == NULL) {
com_err("get_myaddress", 0, "no local AF_INET address");
exit(1);
}
/* Hack! krb5_free_addresses does not use the context arg! */
krb5_free_addresses(NULL, addrs);
}
#else /* !GSSAPI_KRB5 */
#include <rpc/types.h>
#include <rpc/pmap_prot.h>
#include <sys/socket.h>
#if defined(sun)
#include <sys/sockio.h>
#endif
#include <stdio.h>
#ifdef OSF1
#include <net/route.h>
#include <sys/mbuf.h>
#endif
#include <net/if.h>
#include <sys/ioctl.h>
#include <arpa/inet.h>
#include <netinet/in.h>
/*
* don't use gethostbyname, which would invoke yellow pages
*/
get_myaddress(addr)
struct sockaddr_in *addr;
{
int s;
char buf[BUFSIZ];
struct ifconf ifc;
struct ifreq ifreq, *ifr;
int len;
if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
perror("get_myaddress: socket");
exit(1);
}
ifc.ifc_len = sizeof (buf);
ifc.ifc_buf = buf;
if (ioctl(s, SIOCGIFCONF, (char *)&ifc) < 0) {
perror("get_myaddress: ioctl (get interface configuration)");
exit(1);
}
ifr = ifc.ifc_req;
for (len = ifc.ifc_len; len; len -= sizeof ifreq) {
ifreq = *ifr;
if (ioctl(s, SIOCGIFFLAGS, (char *)&ifreq) < 0) {
perror("get_myaddress: ioctl");
exit(1);
}
if ((ifreq.ifr_flags & IFF_UP) &&
ifr->ifr_addr.sa_family == AF_INET) {
*addr = *((struct sockaddr_in *)&ifr->ifr_addr);
addr->sin_port = htons(PMAPPORT);
break;
}
ifr++;
}
(void) close(s);
}
#endif /* !GSSAPI_KRB5 */
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