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[glibc/history.git] / sunrpc / getrpcport.c
bloba8f1326f08497f631920920dba92f28b90796d73
1 /* @(#)getrpcport.c 2.1 88/07/29 4.0 RPCSRC */
2 #if !defined(lint) && defined(SCCSIDS)
3 static char sccsid[] = "@(#)getrpcport.c 1.3 87/08/11 SMI";
4 #endif
5 /*
6 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
7 * unrestricted use provided that this legend is included on all tape
8 * media and as a part of the software program in whole or part. Users
9 * may copy or modify Sun RPC without charge, but are not authorized
10 * to license or distribute it to anyone else except as part of a product or
11 * program developed by the user.
13 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
14 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
15 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
17 * Sun RPC is provided with no support and without any obligation on the
18 * part of Sun Microsystems, Inc. to assist in its use, correction,
19 * modification or enhancement.
21 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
22 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
23 * OR ANY PART THEREOF.
25 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
26 * or profits or other special, indirect and consequential damages, even if
27 * Sun has been advised of the possibility of such damages.
29 * Sun Microsystems, Inc.
30 * 2550 Garcia Avenue
31 * Mountain View, California 94043
35 * Copyright (c) 1985 by Sun Microsystems, Inc.
38 #include <alloca.h>
39 #include <errno.h>
40 #include <stdio.h>
41 #include <netdb.h>
42 #include <string.h>
43 #include <rpc/rpc.h>
44 #include <rpc/clnt.h>
45 #include <rpc/pmap_clnt.h>
46 #include <sys/socket.h>
48 int
49 getrpcport (const char *host, u_long prognum, u_long versnum, u_int proto)
51 struct sockaddr_in addr;
52 struct hostent hostbuf, *hp;
53 size_t buflen;
54 char *buffer;
55 int herr;
57 buflen = 1024;
58 buffer = __alloca (buflen);
59 while (__gethostbyname_r (host, &hostbuf, buffer, buflen, &hp, &herr) != 0
60 || hp == NULL)
61 if (herr != NETDB_INTERNAL || errno != ERANGE)
62 return 0;
63 else
65 /* Enlarge the buffer. */
66 buflen *= 2;
67 buffer = __alloca (buflen);
70 memcpy ((char *) &addr.sin_addr, hp->h_addr, hp->h_length);
71 addr.sin_family = AF_INET;
72 addr.sin_port = 0;
73 return pmap_getport (&addr, prognum, versnum, proto);