1 /* $NetBSD: yp_first.c,v 1.14 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_first.c,v 1.14 2003/12/10 12:06:25 agc Exp $"); 32 #endif 33 34 #include "namespace.h" 35 #include <stdlib.h> 36 #include <string.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_first,_yp_first) 47 __weak_alias(yp_next,_yp_next) 48 #endif 49 50 int 51 yp_first(indomain, inmap, outkey, outkeylen, outval, outvallen) 52 const char *indomain; 53 const char *inmap; 54 char **outkey; 55 int *outkeylen; 56 char **outval; 57 int *outvallen; 58 { 59 struct ypresp_key_val yprkv; 60 struct ypreq_nokey yprnk; 61 struct dom_binding *ysd; 62 int r, nerrs = 0; 63 64 if (outkey == NULL || outkeylen == NULL || \ 65 outval == NULL || outvallen == NULL) 66 return YPERR_BADARGS; 67 *outkey = *outval = NULL; 68 *outkeylen = *outvallen = 0; 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 (void)memset(&yprkv, 0, sizeof yprkv); 82 83 r = clnt_call(ysd->dom_client, (rpcproc_t)YPPROC_FIRST, 84 (xdrproc_t)xdr_ypreq_nokey, 85 &yprnk, (xdrproc_t)xdr_ypresp_key_val, &yprkv, _yplib_timeout); 86 if (r != RPC_SUCCESS) { 87 if (++nerrs == _yplib_nerrs) { 88 clnt_perror(ysd->dom_client, "yp_first: clnt_call"); 89 nerrs = 0; 90 } 91 ysd->dom_vers = -1; 92 goto again; 93 } 94 if (!(r = ypprot_err(yprkv.status))) { 95 *outkeylen = yprkv.keydat.dsize; 96 if ((*outkey = malloc((size_t)(*outkeylen + 1))) == NULL) 97 r = YPERR_RESRC; 98 else { 99 (void)memcpy(*outkey, yprkv.keydat.dptr, 100 (size_t)*outkeylen); 101 (*outkey)[*outkeylen] = '\0'; 102 } 103 *outvallen = yprkv.valdat.dsize; 104 if ((*outval = malloc((size_t)(*outvallen + 1))) == NULL) 105 r = YPERR_RESRC; 106 else { 107 (void)memcpy(*outval, yprkv.valdat.dptr, 108 (size_t)*outvallen); 109 (*outval)[*outvallen] = '\0'; 110 } 111 } 112 xdr_free((xdrproc_t)xdr_ypresp_key_val, (char *)(void *)&yprkv); 113 __yp_unbind(ysd); 114 if (r != 0) { 115 if (*outkey) { 116 free(*outkey); 117 *outkey = NULL; 118 } 119 if (*outval) { 120 free(*outval); 121 *outval = NULL; 122 } 123 } 124 return r; 125 } 126 127 int 128 yp_next(indomain, inmap, inkey, inkeylen, outkey, outkeylen, outval, outvallen) 129 const char *indomain; 130 const char *inmap; 131 const char *inkey; 132 int inkeylen; 133 char **outkey; 134 int *outkeylen; 135 char **outval; 136 int *outvallen; 137 { 138 struct ypresp_key_val yprkv; 139 struct ypreq_key yprk; 140 struct dom_binding *ysd; 141 int r, nerrs = 0; 142 143 if (outkey == NULL || outkeylen == NULL || \ 144 outval == NULL || outvallen == NULL || \ 145 inkey == 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, (rpcproc_t)YPPROC_NEXT, 167 (xdrproc_t)xdr_ypreq_key, 168 &yprk, (xdrproc_t)xdr_ypresp_key_val, &yprkv, _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((size_t)(*outkeylen + 1))) == NULL) 180 r = YPERR_RESRC; 181 else { 182 (void)memcpy(*outkey, yprkv.keydat.dptr, 183 (size_t)*outkeylen); 184 (*outkey)[*outkeylen] = '\0'; 185 } 186 *outvallen = yprkv.valdat.dsize; 187 if ((*outval = malloc((size_t)(*outvallen + 1))) == NULL) 188 r = YPERR_RESRC; 189 else { 190 (void)memcpy(*outval, yprkv.valdat.dptr, 191 (size_t)*outvallen); 192 (*outval)[*outvallen] = '\0'; 193 } 194 } 195 xdr_free((xdrproc_t)xdr_ypresp_key_val, (char *)(void *)&yprkv); 196 __yp_unbind(ysd); 197 if (r != 0) { 198 if (*outkey) { 199 free(*outkey); 200 *outkey = NULL; 201 } 202 if (*outval) { 203 free(*outval); 204 *outval = NULL; 205 } 206 } 207 return r; 208 } 209