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75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
/* @(#)getrpcport.c 2.1 88/07/29 4.0 RPCSRC */
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#if !defined(lint) && defined(SCCSIDS)
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static char sccsid[] = "@(#)getrpcport.c 1.3 87/08/11 SMI";
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#endif
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/*
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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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/*
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* Copyright (c) 1985 by Sun Microsystems, Inc.
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*/
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#include <alloca.h>
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#include <errno.h>
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#include <stdio.h>
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#include <netdb.h>
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#include <string.h>
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#include <rpc/rpc.h>
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#include <rpc/clnt.h>
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#include <rpc/pmap_clnt.h>
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#include <sys/socket.h>
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int
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getrpcport (const char *host, u_long prognum, u_long versnum, u_int proto)
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{
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struct sockaddr_in addr;
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struct hostent hostbuf, *hp;
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size_t buflen;
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char *buffer;
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int herr;
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buflen = 1024;
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buffer = __alloca (buflen);
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while (__gethostbyname_r (host, &hostbuf, buffer, buflen, &hp, &herr) != 0
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|| hp == NULL)
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if (herr != NETDB_INTERNAL || errno != ERANGE)
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return 0;
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else
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{
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/* Enlarge the buffer. */
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buflen *= 2;
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buffer = __alloca (buflen);
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}
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bcopy (hp->h_addr, (char *) &addr.sin_addr, hp->h_length);
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addr.sin_family = AF_INET;
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addr.sin_port = 0;
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return pmap_getport (&addr, prognum, versnum, proto);
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}
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