1 /* $NetBSD: yp_master.c,v 1.13 2003/12/10 12:06:25 agc 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 1.13 2003/12/10 12:06:25 agc 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 extern struct timeval _yplib_timeout; 43 extern int _yplib_nerrs; 44 45 #ifdef __weak_alias 46 __weak_alias(yp_master,_yp_master) 47 #endif 48 49 int 50 yp_master(indomain, inmap, outname) 51 const char *indomain; 52 const char *inmap; 53 char **outname; 54 { 55 struct dom_binding *ysd; 56 struct ypresp_master yprm; 57 struct ypreq_nokey yprnk; 58 int r, nerrs = 0; 59 60 if (outname == NULL) 61 return YPERR_BADARGS; 62 *outname = NULL; 63 64 if (_yp_invalid_domain(indomain)) 65 return YPERR_BADARGS; 66 if (inmap == NULL || *inmap == '\0' 67 || strlen(inmap) > YPMAXMAP) 68 return YPERR_BADARGS; 69 70 again: 71 if (_yp_dobind(indomain, &ysd) != 0) 72 return YPERR_DOMAIN; 73 74 yprnk.domain = indomain; 75 yprnk.map = inmap; 76 77 (void)memset(&yprm, 0, sizeof yprm); 78 79 r = clnt_call(ysd->dom_client, (rpcproc_t)YPPROC_MASTER, 80 (xdrproc_t)xdr_ypreq_nokey, &yprnk, 81 (xdrproc_t)xdr_ypresp_master, &yprm, _yplib_timeout); 82 if (r != RPC_SUCCESS) { 83 if (++nerrs == _yplib_nerrs) { 84 clnt_perror(ysd->dom_client, "yp_master: clnt_call"); 85 nerrs = 0; 86 } 87 ysd->dom_vers = -1; 88 goto again; 89 } 90 if (!(r = ypprot_err(yprm.status))) { 91 if ((*outname = strdup(yprm.master)) == NULL) 92 r = YPERR_RESRC; 93 } 94 xdr_free((xdrproc_t)xdr_ypresp_master, (char *)(void *)&yprm); 95 __yp_unbind(ysd); 96 if (r != 0) { 97 if (*outname) { 98 free(*outname); 99 *outname = NULL; 100 } 101 } 102 return r; 103 } 104