c124f3bdfc
1. Added missing function prototypes. 2. Added missing function return types. 3. Added missing function argument types. 4. Added missing headers for system function prototypes. 5. Got rid of "extern int errno" rubbish.
101 lines
3.0 KiB
C
101 lines
3.0 KiB
C
/*
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* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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* unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify Sun RPC without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user.
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*
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* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
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*
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* Sun RPC is provided with no support and without any obligation on the
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* part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
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* OR ANY PART THEREOF.
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*
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* In no event will Sun Microsystems, Inc. be liable for any lost revenue
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* or profits or other special, indirect and consequential damages, even if
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* Sun has been advised of the possibility of such damages.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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/*static char *sccsid = "from: @(#)get_myaddress.c 1.4 87/08/11 Copyr 1984 Sun Micro";*/
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/*static char *sccsid = "from: @(#)get_myaddress.c 2.1 88/07/29 4.0 RPCSRC";*/
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static char *rcsid = "$Id: get_myaddress.c,v 1.3 1995/10/22 14:51:23 phk Exp $";
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#endif
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/*
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* get_myaddress.c
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*
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* Get client's IP address via ioctl. This avoids using the yellowpages.
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* Copyright (C) 1984, Sun Microsystems, Inc.
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*/
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#include <rpc/types.h>
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#include <rpc/xdr.h>
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#include <rpc/pmap_prot.h>
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#include <sys/socket.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <net/if.h>
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#include <sys/ioctl.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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/*
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* don't use gethostbyname, which would invoke yellow pages
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*/
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void get_myaddress(addr)
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struct sockaddr_in *addr;
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{
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int s;
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char buf[BUFSIZ];
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struct ifconf ifc;
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struct ifreq ifreq, *ifr;
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int len, slop;
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if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
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perror("get_myaddress: socket");
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exit(1);
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}
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ifc.ifc_len = sizeof (buf);
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ifc.ifc_buf = buf;
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if (ioctl(s, SIOCGIFCONF, (char *)&ifc) < 0) {
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perror("get_myaddress: ioctl (get interface configuration)");
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exit(1);
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}
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ifr = ifc.ifc_req;
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for (len = ifc.ifc_len; len; len -= sizeof ifreq) {
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ifreq = *ifr;
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if (ioctl(s, SIOCGIFFLAGS, (char *)&ifreq) < 0) {
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perror("get_myaddress: ioctl");
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exit(1);
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}
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if ((ifreq.ifr_flags & IFF_UP) &&
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ifr->ifr_addr.sa_family == AF_INET) {
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*addr = *((struct sockaddr_in *)&ifr->ifr_addr);
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addr->sin_port = htons(PMAPPORT);
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break;
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}
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/*
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* Deal with variable length addresses
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*/
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slop = ifr->ifr_addr.sa_len - sizeof (struct sockaddr);
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if (slop) {
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ifr = (struct ifreq *) ((caddr_t)ifr + slop);
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len -= slop;
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}
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ifr++;
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}
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(void) close(s);
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}
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