1 /* $NetBSD: yp_master.c,v 1.12 2000/07/06 03:14:05 christos 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 #include <sys/cdefs.h> 35 #if defined(LIBC_SCCS) && !defined(lint) 36 __RCSID("$NetBSD: yp_master.c,v 1.12 2000/07/06 03:14:05 christos Exp $"); 37 #endif 38 39 #include "namespace.h" 40 #include <string.h> 41 #include <stdlib.h> 42 #include <rpc/rpc.h> 43 #include <rpcsvc/yp_prot.h> 44 #include <rpcsvc/ypclnt.h> 45 #include "local.h" 46 47 extern struct timeval _yplib_timeout; 48 extern int _yplib_nerrs; 49 50 #ifdef __weak_alias 51 __weak_alias(yp_master,_yp_master) 52 #endif 53 54 int 55 yp_master(indomain, inmap, outname) 56 const char *indomain; 57 const char *inmap; 58 char **outname; 59 { 60 struct dom_binding *ysd; 61 struct ypresp_master yprm; 62 struct ypreq_nokey yprnk; 63 int r, nerrs = 0; 64 65 if (outname == NULL) 66 return YPERR_BADARGS; 67 *outname = NULL; 68 69 if (_yp_invalid_domain(indomain)) 70 return YPERR_BADARGS; 71 if (inmap == NULL || *inmap == '\0' 72 || strlen(inmap) > YPMAXMAP) 73 return YPERR_BADARGS; 74 75 again: 76 if (_yp_dobind(indomain, &ysd) != 0) 77 return YPERR_DOMAIN; 78 79 yprnk.domain = indomain; 80 yprnk.map = inmap; 81 82 (void)memset(&yprm, 0, sizeof yprm); 83 84 r = clnt_call(ysd->dom_client, (rpcproc_t)YPPROC_MASTER, 85 (xdrproc_t)xdr_ypreq_nokey, &yprnk, 86 (xdrproc_t)xdr_ypresp_master, &yprm, _yplib_timeout); 87 if (r != RPC_SUCCESS) { 88 if (++nerrs == _yplib_nerrs) { 89 clnt_perror(ysd->dom_client, "yp_master: clnt_call"); 90 nerrs = 0; 91 } 92 ysd->dom_vers = -1; 93 goto again; 94 } 95 if (!(r = ypprot_err(yprm.status))) { 96 if ((*outname = strdup(yprm.master)) == NULL) 97 r = YPERR_RESRC; 98 } 99 xdr_free((xdrproc_t)xdr_ypresp_master, (char *)(void *)&yprm); 100 __yp_unbind(ysd); 101 if (r != 0) { 102 if (*outname) { 103 free(*outname); 104 *outname = NULL; 105 } 106 } 107 return r; 108 } 109