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- /*
- * $Id: get_myaddress.c,v 1.3 1994/02/26 18:52:47 jraja Exp $
- *
- * $Log: get_myaddress.c,v $
- * Revision 1.3 1994/02/26 18:52:47 jraja
- * Added code using gethostid() if AMITCP is defined.
- *
- * Revision 1.2 1993/11/10 01:55:31 jraja
- * Fixed includes.
- * Search for non-loopback address if possible.
- * Changed ioctl() and close() to IoctlSocket() and CloseSocket() for AMITCP.
- *
- */
- /* @(#)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.
- */
-
- #include <sys/param.h>
- #include <rpc/types.h>
- #include <rpc/xdr.h>
- #include <rpc/auth.h>
- #include <rpc/clnt.h>
- #include <rpc/pmap_prot.h>
- #include <sys/socket.h>
- #include <stdio.h>
- #include <net/if.h>
- #include <sys/ioctl.h>
- #include <netinet/in.h>
- #include <arpa/inet.h>
-
- /*
- * don't use gethostbyname, which would invoke yellow pages
- */
- void
- get_myaddress(struct sockaddr_in *addr)
- {
- #ifdef AMITCP
- /*
- * AmiTCP gethostid() is documented to return our primary IP address
- * as the host id, use it.
- */
- static struct sockaddr_in saddr = { sizeof(struct sockaddr_in),
- AF_INET,
- htons(PMAPPORT),
- 0 };
- *addr = saddr;
- addr->sin_addr.s_addr = gethostid();
- #else
- int s;
- char buf[BUFSIZ];
- struct ifconf ifc;
- struct ifreq ifreq, *ifr;
- int len, slop;
-
- if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
- perror("get_myaddress: socket");
- exit(1);
- }
- ifc.ifc_len = sizeof (buf);
- ifc.ifc_buf = buf;
- #ifdef AMITCP
- #define ioctl IoctlSocket
- #endif
- 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 on first non-loopback address.
- * Loopback address will remain if no other suitable
- * address is found.
- */
- if (!(ifreq.ifr_flags & IFF_LOOPBACK))
- break;
- }
- /*
- * Deal with variable length addresses
- */
- slop = ifr->ifr_addr.sa_len - sizeof (struct sockaddr);
- if (slop) {
- ifr = (struct ifreq *) ((caddr_t)ifr + slop);
- len -= slop;
- }
- ifr++;
- }
- #ifdef AMITCP
- #undef ioctl
- (void) CloseSocket(s);
- #else
- (void) close(s);
- #endif
- #endif /* !AMITCP */
- }
-