1 /* $NetBSD: yp_first.c,v 1.13 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_first.c,v 1.13 2000/07/06 03:14:05 christos 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 || outkeylen == NULL || \ 70 outval == NULL || outvallen == NULL) 71 return YPERR_BADARGS; 72 *outkey = *outval = NULL; 73 *outkeylen = *outvallen = 0; 74 if (_yp_invalid_domain(indomain)) 75 return YPERR_BADARGS; 76 if (inmap == NULL || *inmap == '\0' 77 || strlen(inmap) > YPMAXMAP) 78 return YPERR_BADARGS; 79 80 again: 81 if (_yp_dobind(indomain, &ysd) != 0) 82 return YPERR_DOMAIN; 83 84 yprnk.domain = indomain; 85 yprnk.map = inmap; 86 (void)memset(&yprkv, 0, sizeof yprkv); 87 88 r = clnt_call(ysd->dom_client, (rpcproc_t)YPPROC_FIRST, 89 (xdrproc_t)xdr_ypreq_nokey, 90 &yprnk, (xdrproc_t)xdr_ypresp_key_val, &yprkv, _yplib_timeout); 91 if (r != RPC_SUCCESS) { 92 if (++nerrs == _yplib_nerrs) { 93 clnt_perror(ysd->dom_client, "yp_first: clnt_call"); 94 nerrs = 0; 95 } 96 ysd->dom_vers = -1; 97 goto again; 98 } 99 if (!(r = ypprot_err(yprkv.status))) { 100 *outkeylen = yprkv.keydat.dsize; 101 if ((*outkey = malloc((size_t)(*outkeylen + 1))) == NULL) 102 r = YPERR_RESRC; 103 else { 104 (void)memcpy(*outkey, yprkv.keydat.dptr, 105 (size_t)*outkeylen); 106 (*outkey)[*outkeylen] = '\0'; 107 } 108 *outvallen = yprkv.valdat.dsize; 109 if ((*outval = malloc((size_t)(*outvallen + 1))) == NULL) 110 r = YPERR_RESRC; 111 else { 112 (void)memcpy(*outval, yprkv.valdat.dptr, 113 (size_t)*outvallen); 114 (*outval)[*outvallen] = '\0'; 115 } 116 } 117 xdr_free((xdrproc_t)xdr_ypresp_key_val, (char *)(void *)&yprkv); 118 __yp_unbind(ysd); 119 if (r != 0) { 120 if (*outkey) { 121 free(*outkey); 122 *outkey = NULL; 123 } 124 if (*outval) { 125 free(*outval); 126 *outval = NULL; 127 } 128 } 129 return r; 130 } 131 132 int 133 yp_next(indomain, inmap, inkey, inkeylen, outkey, outkeylen, outval, outvallen) 134 const char *indomain; 135 const char *inmap; 136 const char *inkey; 137 int inkeylen; 138 char **outkey; 139 int *outkeylen; 140 char **outval; 141 int *outvallen; 142 { 143 struct ypresp_key_val yprkv; 144 struct ypreq_key yprk; 145 struct dom_binding *ysd; 146 int r, nerrs = 0; 147 148 if (outkey == NULL || outkeylen == NULL || \ 149 outval == NULL || outvallen == NULL || \ 150 inkey == NULL) 151 return YPERR_BADARGS; 152 *outkey = *outval = NULL; 153 *outkeylen = *outvallen = 0; 154 155 if (_yp_invalid_domain(indomain)) 156 return YPERR_BADARGS; 157 if (inmap == NULL || *inmap == '\0' 158 || strlen(inmap) > YPMAXMAP) 159 return YPERR_BADARGS; 160 161 again: 162 if (_yp_dobind(indomain, &ysd) != 0) 163 return YPERR_DOMAIN; 164 165 yprk.domain = indomain; 166 yprk.map = inmap; 167 yprk.keydat.dptr = inkey; 168 yprk.keydat.dsize = inkeylen; 169 (void)memset(&yprkv, 0, sizeof yprkv); 170 171 r = clnt_call(ysd->dom_client, (rpcproc_t)YPPROC_NEXT, 172 (xdrproc_t)xdr_ypreq_key, 173 &yprk, (xdrproc_t)xdr_ypresp_key_val, &yprkv, _yplib_timeout); 174 if (r != RPC_SUCCESS) { 175 if (++nerrs == _yplib_nerrs) { 176 clnt_perror(ysd->dom_client, "yp_next: clnt_call"); 177 nerrs = 0; 178 } 179 ysd->dom_vers = -1; 180 goto again; 181 } 182 if (!(r = ypprot_err(yprkv.status))) { 183 *outkeylen = yprkv.keydat.dsize; 184 if ((*outkey = malloc((size_t)(*outkeylen + 1))) == NULL) 185 r = YPERR_RESRC; 186 else { 187 (void)memcpy(*outkey, yprkv.keydat.dptr, 188 (size_t)*outkeylen); 189 (*outkey)[*outkeylen] = '\0'; 190 } 191 *outvallen = yprkv.valdat.dsize; 192 if ((*outval = malloc((size_t)(*outvallen + 1))) == NULL) 193 r = YPERR_RESRC; 194 else { 195 (void)memcpy(*outval, yprkv.valdat.dptr, 196 (size_t)*outvallen); 197 (*outval)[*outvallen] = '\0'; 198 } 199 } 200 xdr_free((xdrproc_t)xdr_ypresp_key_val, (char *)(void *)&yprkv); 201 __yp_unbind(ysd); 202 if (r != 0) { 203 if (*outkey) { 204 free(*outkey); 205 *outkey = NULL; 206 } 207 if (*outval) { 208 free(*outval); 209 *outval = NULL; 210 } 211 } 212 return r; 213 } 214