1 /*********************************************************************
2 * RPC for the Windows NT Operating System
3 * 1993 by Martin F. Gergeleit
4 * Users may use, copy or modify Sun RPC for the Windows NT Operating
5 * System according to the Sun copyright below.
7 * RPC for the Windows NT Operating System COMES WITH ABSOLUTELY NO
8 * WARRANTY, NOR WILL I BE LIABLE FOR ANY DAMAGES INCURRED FROM THE
9 * USE OF. USE ENTIRELY AT YOUR OWN RISK!!!
10 *********************************************************************/
12 /* @(#)get_myaddress.c 2.1 88/07/29 4.0 RPCSRC */
14 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
15 * unrestricted use provided that this legend is included on all tape
16 * media and as a part of the software program in whole or part. Users
17 * may copy or modify Sun RPC without charge, but are not authorized
18 * to license or distribute it to anyone else except as part of a product or
19 * program developed by the user.
21 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
22 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
25 * Sun RPC is provided with no support and without any obligation on the
26 * part of Sun Microsystems, Inc. to assist in its use, correction,
27 * modification or enhancement.
29 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
30 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
31 * OR ANY PART THEREOF.
33 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
34 * or profits or other special, indirect and consequential damages, even if
35 * Sun has been advised of the possibility of such damages.
37 * Sun Microsystems, Inc.
39 * Mountain View, California 94043
41 #if !defined(lint) && defined(SCCSIDS)
42 static char sccsid[] = "@(#)get_myaddress.c 1.4 87/08/11 Copyr 1984 Sun Micro";
47 * Get client's IP address via ioctl. This avoids using the yellowpages.
48 * Copyright (C) 1984, Sun Microsystems, Inc.
53 #include <rpc/pmap_prot.h>
56 #define MAX_NAME_LEN 255
58 #include <rpc/types.h>
59 #include <rpc/pmap_prot.h>
60 #include <sys/socket.h>
63 #include <sys/ioctl.h>
64 #include <arpa/inet.h>
65 #include <netinet/in.h>
68 #include <sys/sockio.h>
72 * don't use gethostbyname, which would invoke yellow pages
77 struct sockaddr_in *addr;
80 struct hostent *Hostent;
81 char my_name[MAX_NAME_LEN];
83 gethostname(my_name, MAX_NAME_LEN);
84 Hostent = gethostbyname(my_name);
86 if (Hostent == NULL) {
88 perror("Can not get host info");
92 addr->sin_family = AF_INET;
93 addr->sin_port = htons(PMAPPORT);
94 bcopy((char *)Hostent->h_addr, (char *)&addr->sin_addr,
101 struct ifreq ifreq, *ifr;
104 if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
105 perror("get_myaddress: socket");
108 ifc.ifc_len = sizeof (buf);
110 if (ioctl(s, SIOCGIFCONF, (char *)&ifc) < 0) {
111 perror("get_myaddress: ioctl (get interface configuration)");
115 for (len = ifc.ifc_len; len; len -= sizeof ifreq) {
117 if (ioctl(s, SIOCGIFFLAGS, (char *)&ifreq) < 0) {
118 perror("get_myaddress: ioctl");
121 if ((ifreq.ifr_flags & IFF_UP) &&
122 ifr->ifr_addr.sa_family == AF_INET) {
123 *addr = *((struct sockaddr_in *)&ifr->ifr_addr);
124 addr->sin_port = htons(PMAPPORT);