/* @(#)getrpcport.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 0 static char sccsid[] = "@(#)getrpcport.c 1.3 87/08/11 SMI"; #endif /* * Copyright (c) 1985 by Sun Microsystems, Inc. */ #include <alloca.h> #include <errno.h> #include <stdio.h> #include <netdb.h> #include <string.h> #include <rpc/rpc.h> #include <rpc/clnt.h> #include <rpc/pmap_clnt.h> #include <sys/socket.h> int getrpcport (const char *host, u_long prognum, u_long versnum, u_int proto) { struct sockaddr_in addr; struct hostent hostbuf, *hp; size_t buflen; char *buffer; int herr; buflen = 1024; buffer = alloca (buflen); while (gethostbyname_r (host, &hostbuf, buffer, buflen, &hp, &herr) != 0 || hp == NULL) if (herr != NETDB_INTERNAL || errno != ERANGE) return 0; else { /* Enlarge the buffer. */ buflen *= 2; buffer = alloca (buflen); } memcpy ((char *) &addr.sin_addr, hp->h_addr, hp->h_length); addr.sin_family = AF_INET; addr.sin_port = 0; return pmap_getport (&addr, prognum, versnum, proto); }