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getrpcport.c revision 1.17 
      1 /*	$NetBSD: getrpcport.c,v 1.17 2012/03/20 17:14:50 matt Exp $	*/
      2 
      3 /*
      4  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
      5  * unrestricted use provided that this legend is included on all tape
      6  * media and as a part of the software program in whole or part.  Users
      7  * may copy or modify Sun RPC without charge, but are not authorized
      8  * to license or distribute it to anyone else except as part of a product or
      9  * program developed by the user.
     10  *
     11  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
     12  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
     13  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
     14  *
     15  * Sun RPC is provided with no support and without any obligation on the
     16  * part of Sun Microsystems, Inc. to assist in its use, correction,
     17  * modification or enhancement.
     18  *
     19  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
     20  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
     21  * OR ANY PART THEREOF.
     22  *
     23  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
     24  * or profits or other special, indirect and consequential damages, even if
     25  * Sun has been advised of the possibility of such damages.
     26  *
     27  * Sun Microsystems, Inc.
     28  * 2550 Garcia Avenue
     29  * Mountain View, California  94043
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #if defined(LIBC_SCCS) && !defined(lint)
     34 #if 0
     35 static char *sccsid = "@(#)getrpcport.c 1.3 87/08/11 SMI";
     36 static char *sccsid = "@(#)getrpcport.c	2.1 88/07/29 4.0 RPCSRC";
     37 #else
     38 __RCSID("$NetBSD: getrpcport.c,v 1.17 2012/03/20 17:14:50 matt Exp $");
     39 #endif
     40 #endif
     41 
     42 /*
     43  * Copyright (c) 1985 by Sun Microsystems, Inc.
     44  */
     45 
     46 #include "namespace.h"
     47 
     48 #include <sys/types.h>
     49 #include <sys/socket.h>
     50 
     51 #include <assert.h>
     52 #include <netdb.h>
     53 #include <stdio.h>
     54 #include <string.h>
     55 
     56 #include <rpc/rpc.h>
     57 #include <rpc/pmap_clnt.h>
     58 
     59 #ifdef __weak_alias
     60 __weak_alias(getrpcport,_getrpcport)
     61 #endif
     62 
     63 int
     64 getrpcport(char *host, int prognum, int versnum, int proto)
     65 {
     66 	struct sockaddr_in addr;
     67 	struct hostent *hp;
     68 
     69 	_DIAGASSERT(host != NULL);
     70 
     71 	if ((hp = gethostbyname(host)) == NULL)
     72 		return (0);
     73 	memset(&addr, 0, sizeof(addr));
     74 	addr.sin_len = sizeof(struct sockaddr_in);
     75 	addr.sin_family = AF_INET;
     76 	addr.sin_port =  0;
     77 	if (hp->h_length > addr.sin_len)
     78 		hp->h_length = addr.sin_len;
     79 	memcpy(&addr.sin_addr.s_addr, hp->h_addr, (size_t)hp->h_length);
     80 	/* Inconsistent interfaces need casts! :-( */
     81 	return (pmap_getport(&addr, (u_long)prognum, (u_long)versnum,
     82 	    (u_int)proto));
     83 }
     84