1 /* $NetBSD: yp_first.c,v 1.8 1997/07/21 14:09:26 jtc 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_first.c,v 1.8 1997/07/21 14:09:26 jtc Exp $"); 37 #endif 38 39 #include "namespace.h" 40 #include <stdlib.h> 41 #include <string.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_first,_yp_first); 52 __weak_alias(yp_next,_yp_next); 53 #endif 54 55 int 56 yp_first(indomain, inmap, outkey, outkeylen, outval, outvallen) 57 const char *indomain; 58 const char *inmap; 59 char **outkey; 60 int *outkeylen; 61 char **outval; 62 int *outvallen; 63 { 64 struct ypresp_key_val yprkv; 65 struct ypreq_nokey yprnk; 66 struct dom_binding *ysd; 67 int r, nerrs = 0; 68 69 if (outkey == NULL || outval == NULL) 70 return YPERR_BADARGS; 71 *outkey = *outval = NULL; 72 *outkeylen = *outvallen = 0; 73 if (_yp_invalid_domain(indomain)) 74 return YPERR_BADARGS; 75 if (inmap == NULL || *inmap == '\0' 76 || strlen(inmap) > YPMAXMAP) 77 return YPERR_BADARGS; 78 79 again: 80 if (_yp_dobind(indomain, &ysd) != 0) 81 return YPERR_DOMAIN; 82 83 yprnk.domain = indomain; 84 yprnk.map = inmap; 85 (void)memset(&yprkv, 0, sizeof yprkv); 86 87 r = clnt_call(ysd->dom_client, YPPROC_FIRST, 88 xdr_ypreq_nokey, &yprnk, xdr_ypresp_key_val, &yprkv, 89 _yplib_timeout); 90 if (r != RPC_SUCCESS) { 91 if (++nerrs == _yplib_nerrs) { 92 clnt_perror(ysd->dom_client, "yp_first: clnt_call"); 93 nerrs = 0; 94 } 95 ysd->dom_vers = -1; 96 goto again; 97 } 98 if (!(r = ypprot_err(yprkv.status))) { 99 *outkeylen = yprkv.keydat.dsize; 100 if ((*outkey = malloc(*outkeylen + 1)) == NULL) 101 r = YPERR_RESRC; 102 else { 103 (void)memcpy(*outkey, yprkv.keydat.dptr, *outkeylen); 104 (*outkey)[*outkeylen] = '\0'; 105 } 106 *outvallen = yprkv.valdat.dsize; 107 if ((*outval = malloc(*outvallen + 1)) == NULL) 108 r = YPERR_RESRC; 109 else { 110 (void)memcpy(*outval, yprkv.valdat.dptr, *outvallen); 111 (*outval)[*outvallen] = '\0'; 112 } 113 } 114 xdr_free(xdr_ypresp_key_val, (char *) &yprkv); 115 __yp_unbind(ysd); 116 if (r != 0) { 117 if (*outkey) { 118 free(*outkey); 119 *outkey = NULL; 120 } 121 if (*outval) { 122 free(*outval); 123 *outval = NULL; 124 } 125 } 126 return r; 127 } 128 129 int 130 yp_next(indomain, inmap, inkey, inkeylen, outkey, outkeylen, outval, outvallen) 131 const char *indomain; 132 const char *inmap; 133 const char *inkey; 134 int inkeylen; 135 char **outkey; 136 int *outkeylen; 137 char **outval; 138 int *outvallen; 139 { 140 struct ypresp_key_val yprkv; 141 struct ypreq_key yprk; 142 struct dom_binding *ysd; 143 int r, nerrs = 0; 144 145 if (outkey == NULL || outval == NULL) 146 return YPERR_BADARGS; 147 *outkey = *outval = NULL; 148 *outkeylen = *outvallen = 0; 149 150 if (_yp_invalid_domain(indomain)) 151 return YPERR_BADARGS; 152 if (inmap == NULL || *inmap == '\0' 153 || strlen(inmap) > YPMAXMAP) 154 return YPERR_BADARGS; 155 156 again: 157 if (_yp_dobind(indomain, &ysd) != 0) 158 return YPERR_DOMAIN; 159 160 yprk.domain = indomain; 161 yprk.map = inmap; 162 yprk.keydat.dptr = inkey; 163 yprk.keydat.dsize = inkeylen; 164 (void)memset(&yprkv, 0, sizeof yprkv); 165 166 r = clnt_call(ysd->dom_client, YPPROC_NEXT, 167 xdr_ypreq_key, &yprk, xdr_ypresp_key_val, &yprkv, 168 _yplib_timeout); 169 if (r != RPC_SUCCESS) { 170 if (++nerrs == _yplib_nerrs) { 171 clnt_perror(ysd->dom_client, "yp_next: clnt_call"); 172 nerrs = 0; 173 } 174 ysd->dom_vers = -1; 175 goto again; 176 } 177 if (!(r = ypprot_err(yprkv.status))) { 178 *outkeylen = yprkv.keydat.dsize; 179 if ((*outkey = malloc(*outkeylen + 1)) == NULL) 180 r = YPERR_RESRC; 181 else { 182 (void)memcpy(*outkey, yprkv.keydat.dptr, *outkeylen); 183 (*outkey)[*outkeylen] = '\0'; 184 } 185 *outvallen = yprkv.valdat.dsize; 186 if ((*outval = malloc(*outvallen + 1)) == NULL) 187 r = YPERR_RESRC; 188 else { 189 (void)memcpy(*outval, yprkv.valdat.dptr, *outvallen); 190 (*outval)[*outvallen] = '\0'; 191 } 192 } 193 xdr_free(xdr_ypresp_key_val, (char *) &yprkv); 194 __yp_unbind(ysd); 195 if (r != 0) { 196 if (*outkey) { 197 free(*outkey); 198 *outkey = NULL; 199 } 200 if (*outval) { 201 free(*outval); 202 *outval = NULL; 203 } 204 } 205 return r; 206 } 207