libexec/ypxfr/ypxfr_misc.c

   1 /*
   2  * Copyright (c) 1995
   3  *      Bill Paul <wpaul@ctr.columbia.edu>.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by Bill Paul.
  16  * 4. Neither the name of the author nor the names of any co-contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  * $FreeBSD: src/libexec/ypxfr/ypxfr_misc.c,v 1.9.2.2 2002/02/15 00:46:54 des Exp $
  33  * $DragonFly: src/libexec/ypxfr/ypxfr_misc.c,v 1.2 2003/06/17 04:27:08 dillon Exp $
  34  */
  35
  36 #include <stdio.h>
  37 #include <string.h>
  38 #include <stdlib.h>
  39 #include <unistd.h>
  40 #include <sys/param.h>
  41 #include <rpc/rpc.h>
  42 #include <rpcsvc/yp.h>
  43 struct dom_binding {};
  44 #include <rpcsvc/ypclnt.h>
  45 #include "ypxfr_extern.h"
  46
  47 char *
  48 ypxfrerr_string(ypxfrstat code)
  49 {
  50         switch (code) {
  51         case YPXFR_SUCC:
  52                 return ("Map successfully transferred");
  53                 break;
  54         case YPXFR_AGE:
  55                 return ("Master's version not newer");
  56                 break;
  57         case YPXFR_NOMAP:
  58                 return ("No such map in server's domain");
  59                 break;
  60         case YPXFR_NODOM:
  61                 return ("Domain not supported by server");
  62                 break;
  63         case YPXFR_RSRC:
  64                 return ("Local resource allocation failure");
  65                 break;
  66         case YPXFR_RPC:
  67                 return ("RPC failure talking to server");
  68                 break;
  69         case YPXFR_MADDR:
  70                 return ("Could not get master server address");
  71                 break;
  72         case YPXFR_YPERR:
  73                 return ("NIS server/map database error");
  74                 break;
  75         case YPXFR_BADARGS:
  76                 return ("Request arguments bad");
  77                 break;
  78         case YPXFR_DBM:
  79                 return ("Local database operation failed");
  80                 break;
  81         case YPXFR_FILE:
  82                 return ("Local file I/O operation failed");
  83                 break;
  84         case YPXFR_SKEW:
  85                 return ("Map version skew during transfer");
  86                 break;
  87         case YPXFR_CLEAR:
  88                 return ("Couldn't send \"clear\" request to local ypserv");
  89                 break;
  90         case YPXFR_FORCE:
  91                 return ("No local order number in map -- use -f flag");
  92                 break;
  93         case YPXFR_XFRERR:
  94                 return ("General ypxfr error");
  95                 break;
  96         case YPXFR_REFUSED:
  97                 return ("Transfer request refused by ypserv");
  98                 break;
  99         default:
 100                 return ("Unknown error code");
 101                 break;
 102         }
 103 }
 104
 105 /*
 106  * These are wrappers for the usual yp_master() and yp_order() functions.
 107  * They can use either local yplib functions (the real yp_master() and
 108  * yp_order()) or do direct RPCs to a specified server. The latter is
 109  * necessary if ypxfr is run on a machine that isn't configured as an
 110  * NIS client (this can happen very easily: a given machine need not be
 111  * an NIS client in order to be an NIS server).
 112  */
 113
 114 /*
 115  * Careful: yp_master() returns a pointer to a dynamically allocated
 116  * buffer. Calling ypproc_master_2() ourselves also returns a pointer
 117  * to dynamically allocated memory, though this time it's memory
 118  * allocated by the XDR routines. We have to rememver to free() or
 119  * xdr_free() the memory as required to avoid leaking memory.
 120  */
 121 char *
 122 ypxfr_get_master(char *domain, char *map, char *source, const int yplib)
 123 {
 124         static char mastername[MAXPATHLEN + 2];
 125
 126         bzero((char *)&mastername, sizeof(mastername));
 127
 128         if (yplib) {
 129                 int res;
 130                 char *master;
 131                 if ((res = yp_master(domain, map, &master))) {
 132                         switch (res) {
 133                         case YPERR_DOMAIN:
 134                                 yp_errno = YPXFR_NODOM;
 135                                 break;
 136                         case YPERR_MAP:
 137                                 yp_errno = YPXFR_NOMAP;
 138                                 break;
 139                         case YPERR_YPERR:
 140                         default:
 141                                 yp_errno = YPXFR_YPERR;
 142                                 break;
 143                         }
 144                         return(NULL);
 145                 } else {
 146                         snprintf(mastername, sizeof(mastername), "%s", master);
 147                         free(master);
 148                         return((char *)&mastername);
 149                 }
 150         } else {
 151                 CLIENT *clnt;
 152                 ypresp_master *resp;
 153                 ypreq_nokey req;
 154
 155                 if ((clnt = clnt_create(source,YPPROG,YPVERS,"udp")) == NULL) {
 156                         yp_error("%s",clnt_spcreateerror("failed to \
 157 create udp handle to ypserv"));
 158                         yp_errno = YPXFR_RPC;
 159                         return(NULL);
 160                 }
 161
 162                 req.map = map;
 163                 req.domain = domain;
 164                 if ((resp = ypproc_master_2(&req, clnt)) == NULL) {
 165                         yp_error("%s",clnt_sperror(clnt,"YPPROC_MASTER \
 166 failed"));
 167                         clnt_destroy(clnt);
 168                         yp_errno = YPXFR_RPC;
 169                         return(NULL);
 170                 }
 171                 clnt_destroy(clnt);
 172                 if (resp->stat != YP_TRUE) {
 173                         switch (resp->stat) {
 174                         case YP_NODOM:
 175                                 yp_errno = YPXFR_NODOM;
 176                                 break;
 177                         case YP_NOMAP:
 178                                 yp_errno = YPXFR_NOMAP;
 179                                 break;
 180                         case YP_YPERR:
 181                         default:
 182                                 yp_errno = YPXFR_YPERR;
 183                                 break;
 184                         }
 185                         return(NULL);
 186                 }
 187                 snprintf(mastername, sizeof(mastername), "%s", resp->peer);
 188 /*              xdr_free(xdr_ypresp_master, (char *)&resp); */
 189                 return((char *)&mastername);
 190         }
 191 }
 192
 193 unsigned long
 194 ypxfr_get_order(char *domain, char *map, char *source, const int yplib)
 195 {
 196         if (yplib) {
 197                 unsigned long order;
 198                 int res;
 199                 if ((res = yp_order(domain, map, (int *)&order))) {
 200                         switch (res) {
 201                         case YPERR_DOMAIN:
 202                                 yp_errno = YPXFR_NODOM;
 203                                 break;
 204                         case YPERR_MAP:
 205                                 yp_errno = YPXFR_NOMAP;
 206                                 break;
 207                         case YPERR_YPERR:
 208                         default:
 209                                 yp_errno = YPXFR_YPERR;
 210                                 break;
 211                         }
 212                         return(0);
 213                 } else
 214                         return(order);
 215         } else {
 216                 CLIENT *clnt;
 217                 ypresp_order *resp;
 218                 ypreq_nokey req;
 219
 220                 if ((clnt = clnt_create(source,YPPROG,YPVERS,"udp")) == NULL) {
 221                         yp_error("%s",clnt_spcreateerror("couldn't create \
 222 udp handle to ypserv"));
 223                         yp_errno = YPXFR_RPC;
 224                         return(0);
 225                 }
 226                 req.map = map;
 227                 req.domain = domain;
 228                 if ((resp = ypproc_order_2(&req, clnt)) == NULL) {
 229                         yp_error("%s", clnt_sperror(clnt, "YPPROC_ORDER \
 230 failed"));
 231                         clnt_destroy(clnt);
 232                         yp_errno = YPXFR_RPC;
 233                         return(0);
 234                 }
 235                 clnt_destroy(clnt);
 236                 if (resp->stat != YP_TRUE) {
 237                         switch (resp->stat) {
 238                         case YP_NODOM:
 239                                 yp_errno = YPXFR_NODOM;
 240                                 break;
 241                         case YP_NOMAP:
 242                                 yp_errno = YPXFR_NOMAP;
 243                                 break;
 244                         case YP_YPERR:
 245                         default:
 246                                 yp_errno = YPXFR_YPERR;
 247                                 break;
 248                         }
 249                         return(0);
 250                 }
 251                 return(resp->ordernum);
 252         }
 253 }
 254
 255 int
 256 ypxfr_match(char *server, char *domain, char *map, char *key,
 257     unsigned long keylen)
 258 {
 259         ypreq_key ypkey;
 260         ypresp_val *ypval;
 261         CLIENT *clnt;
 262         static char buf[YPMAXRECORD + 2];
 263
 264         bzero((char *)buf, sizeof(buf));
 265
 266         if ((clnt = clnt_create(server, YPPROG,YPVERS,"udp")) == NULL) {
 267                 yp_error("failed to create UDP handle: %s",
 268                                         clnt_spcreateerror(server));
 269                 return(0);
 270         }
 271
 272         ypkey.domain = domain;
 273         ypkey.map = map;
 274         ypkey.key.keydat_len = keylen;
 275         ypkey.key.keydat_val = key;
 276
 277         if ((ypval = ypproc_match_2(&ypkey, clnt)) == NULL) {
 278                 clnt_destroy(clnt);
 279                 yp_error("%s: %s", server,
 280                                 clnt_sperror(clnt,"YPPROC_MATCH failed"));
 281                 return(0);
 282         }
 283
 284         clnt_destroy(clnt);
 285
 286         if (ypval->stat != YP_TRUE) {
 287                 xdr_free((xdrproc_t)xdr_ypresp_val, ypval);
 288                 return(0);
 289         }
 290
 291         xdr_free((xdrproc_t)xdr_ypresp_val, ypval);
 292
 293         return(1);
 294 }