get_myaddr.c
上传用户:nvosite88
上传日期:2007-01-17
资源大小:4983k
文件大小:4k
- /* get_myaddress.c - get client's IP address via ioctl */
- /* Copyright 1989-2000 Wind River Systems, Inc. */
- #include "copyright_wrs.h"
- /* @(#)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
- /*
- modification history
- --------------------
- 01g,18apr00,ham fixed compilation warnings.
- 01f,11aug93,jmm Changed ioctl.h and socket.h to sys/ioctl.h and sys/socket.h
- 01e,26may92,rrr the tree shuffle
- -changed includes to have absolute path from h/
- 01d,04oct91,rrr passed through the ansification filter
- -added include "rpc/xdr.h"
- -changed includes to have absolute path from h/
- -changed copyright notice
- 01c,18may91,hjb included vxWorks.h
- 01b,19apr90,hjb de-linted.
- 01a,11jul89,hjb first VxWorks version for RPC 4.0 upgrade
- */
- /*
- * get_myaddress.c
- *
- * Get client's IP address via ioctl. This avoids using the yellowpages.
- * Copyright (C) 1984, Sun Microsystems, Inc.
- */
- #include "vxWorks.h"
- #include "stdio.h"
- #include "ioLib.h"
- #include "rpc/rpctypes.h"
- #include "rpc/xdr.h"
- #include "rpc/pmap_prot.h"
- #include "sys/socket.h"
- #include "sockLib.h"
- #include "net/if.h"
- #include "sys/ioctl.h"
- #include "netinet/in.h"
- #include "taskLib.h"
- #ifdef BUFSIZ
- #undef BUFSIZ
- #endif
- #define BUFSIZ 1024
- #define SOCKSIZ 40
- /*
- * don't use gethostbyname, which would invoke yellow pages
- */
- void
- get_myaddress(addr)
- struct sockaddr_in *addr;
- {
- int s;
- char buf[BUFSIZ], ifreqBuf [SOCKSIZ];
- struct ifconf ifc;
- struct ifreq * ifr;
- int len;
- if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
- perror("get_myaddress: socket");
- taskSuspend (0);
- }
- ifc.ifc_len = sizeof (buf);
- ifc.ifc_buf = buf;
- if (ioctl (s, SIOCGIFCONF, (int)&ifc) < 0) {
- perror("get_myaddress: ioctl (get interface configuration)");
- taskSuspend (0);
- }
- ifr = ifc.ifc_req;
- for (len = ifc.ifc_len; len; len -= (sizeof(ifr->ifr_name) +
- ifr->ifr_addr.sa_len))
- {
- bcopy ((caddr_t)ifr, ifreqBuf, (sizeof(ifr->ifr_name) +
- ifr->ifr_addr.sa_len));
- if (ioctl(s, SIOCGIFFLAGS, (int)ifreqBuf) < 0) {
- perror("get_myaddress: ioctl");
- taskSuspend (0);
- }
- if ((((struct ifreq *)ifreqBuf)->ifr_flags & IFF_UP) &&
- ifr->ifr_addr.sa_family == AF_INET) {
- *addr = *((struct sockaddr_in *)&ifr->ifr_addr);
- addr->sin_port = htons((u_short) PMAPPORT);
- break;
- }
- ifr = (struct ifreq *)((char *)ifr + (sizeof(ifr->ifr_name) +
- ifr->ifr_addr.sa_len));
- }
- (void) close(s);
- }