1 /* $NetBSD: yp_master.c,v 1.6 1997/07/07 02:00:35 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 Theo de Raadt <deraadt@fsa.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Theo de Raadt. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 22 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #if defined(LIBC_SCCS) && !defined(lint) 35 static char rcsid[] = "$NetBSD: yp_master.c,v 1.6 1997/07/07 02:00:35 lukem Exp $"; 36 #endif 37 38 #include <string.h> 39 #include <rpc/rpc.h> 40 #include <rpcsvc/yp_prot.h> 41 #include <rpcsvc/ypclnt.h> 42 43 extern struct timeval _yplib_timeout; 44 extern int _yplib_nerrs; 45 46 int 47 yp_master(indomain, inmap, outname) 48 const char *indomain; 49 const char *inmap; 50 char **outname; 51 { 52 struct dom_binding *ysd; 53 struct ypresp_master yprm; 54 struct ypreq_nokey yprnk; 55 int r, nerrs = 0; 56 57 if (outname == NULL) 58 return YPERR_BADARGS; 59 *outname = NULL; 60 61 if (_yp_invalid_domain(indomain)) 62 return YPERR_BADARGS; 63 if (inmap == NULL || *inmap == '\0' 64 || strlen(inmap) > YPMAXMAP) 65 return YPERR_BADARGS; 66 67 again: 68 if (_yp_dobind(indomain, &ysd) != 0) 69 return YPERR_DOMAIN; 70 71 yprnk.domain = indomain; 72 yprnk.map = inmap; 73 74 (void)memset(&yprm, 0, sizeof yprm); 75 76 r = clnt_call(ysd->dom_client, YPPROC_MASTER, 77 xdr_ypreq_nokey, &yprnk, xdr_ypresp_master, &yprm, 78 _yplib_timeout); 79 if (r != RPC_SUCCESS) { 80 if (++nerrs == _yplib_nerrs) { 81 clnt_perror(ysd->dom_client, "yp_master: clnt_call"); 82 nerrs = 0; 83 } 84 ysd->dom_vers = -1; 85 goto again; 86 } 87 if (!(r = ypprot_err(yprm.status))) { 88 if ((*outname = strdup(yprm.master)) == NULL) 89 r = YPERR_RESRC; 90 } 91 xdr_free(xdr_ypresp_master, (char *) &yprm); 92 _yp_unbind(ysd); 93 if (r != 0) { 94 if (*outname) { 95 free(*outname); 96 *outname = NULL; 97 } 98 } 99 return r; 100 } 101