1 /* $NetBSD: yp_master.c,v 1.16 2024/01/03 18:41:53 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 17 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 #if defined(LIBC_SCCS) && !defined(lint) 31 __RCSID("$NetBSD: yp_master.c,v 1.16 2024/01/03 18:41:53 christos Exp $"); 32 #endif 33 34 #include "namespace.h" 35 #include <string.h> 36 #include <stdlib.h> 37 #include <rpc/rpc.h> 38 #include <rpcsvc/yp_prot.h> 39 #include <rpcsvc/ypclnt.h> 40 #include "local.h" 41 42 #ifdef __weak_alias 43 __weak_alias(yp_master,_yp_master) 44 #endif 45 46 int 47 yp_master(const char *indomain, const char *inmap, char **outname) 48 { 49 struct dom_binding *ysd; 50 struct ypresp_master yprm; 51 struct ypreq_nokey yprnk; 52 int r, nerrs = 0; 53 54 if (outname == NULL) 55 return YPERR_BADARGS; 56 *outname = NULL; 57 58 if (_yp_invalid_domain(indomain)) 59 return YPERR_BADARGS; 60 if (inmap == NULL || *inmap == '\0' 61 || strlen(inmap) > YPMAXMAP) 62 return YPERR_BADARGS; 63 64 again: 65 if (_yp_dobind(indomain, &ysd) != 0) 66 return YPERR_DOMAIN; 67 68 yprnk.domain = indomain; 69 yprnk.map = inmap; 70 71 (void)memset(&yprm, 0, sizeof yprm); 72 73 r = clnt_call(ysd->dom_client, (rpcproc_t)YPPROC_MASTER, 74 (xdrproc_t)xdr_ypreq_nokey, &yprnk, 75 (xdrproc_t)xdr_ypresp_master, &yprm, _yplib_timeout); 76 if (r != RPC_SUCCESS) { 77 if (_yplib_bindtries <= 0 && ++nerrs == _yplib_nerrs) { 78 clnt_perror(ysd->dom_client, "yp_master: clnt_call"); 79 nerrs = 0; 80 } else if (_yplib_bindtries > 0 && ++nerrs == _yplib_bindtries) 81 return YPERR_YPSERV; 82 ysd->dom_vers = -1; 83 goto again; 84 } 85 if (!(r = ypprot_err(yprm.status))) { 86 if ((*outname = strdup(yprm.master)) == NULL) 87 r = YPERR_RESRC; 88 } 89 xdr_free((xdrproc_t)xdr_ypresp_master, (char *)(void *)&yprm); 90 __yp_unbind(ysd); 91 if (r != 0) { 92 if (*outname) { 93 free(*outname); 94 *outname = NULL; 95 } 96 } 97 return r; 98 } 99