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 *ypxfrerr_string(code)
  48         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 *ypxfr_get_master(domain,map,source,yplib)
 122         char *domain;
 123         char *map;
 124         char *source;
 125         const int yplib;
 126 {
 127         static char mastername[MAXPATHLEN + 2];
 128
 129         bzero((char *)&mastername, sizeof(mastername));
 130
 131         if (yplib) {
 132                 int res;
 133                 char *master;
 134                 if ((res = yp_master(domain, map, &master))) {
 135                         switch (res) {
 136                         case YPERR_DOMAIN:
 137                                 yp_errno = YPXFR_NODOM;
 138                                 break;
 139                         case YPERR_MAP:
 140                                 yp_errno = YPXFR_NOMAP;
 141                                 break;
 142                         case YPERR_YPERR:
 143                         default:
 144                                 yp_errno = YPXFR_YPERR;
 145                                 break;
 146                         }
 147                         return(NULL);
 148                 } else {
 149                         snprintf(mastername, sizeof(mastername), "%s", master);
 150                         free(master);
 151                         return((char *)&mastername);
 152                 }
 153         } else {
 154                 CLIENT *clnt;
 155                 ypresp_master *resp;
 156                 ypreq_nokey req;
 157
 158                 if ((clnt = clnt_create(source,YPPROG,YPVERS,"udp")) == NULL) {
 159                         yp_error("%s",clnt_spcreateerror("failed to \
 160 create udp handle to ypserv"));
 161                         yp_errno = YPXFR_RPC;
 162                         return(NULL);
 163                 }
 164
 165                 req.map = map;
 166                 req.domain = domain;
 167                 if ((resp = ypproc_master_2(&req, clnt)) == NULL) {
 168                         yp_error("%s",clnt_sperror(clnt,"YPPROC_MASTER \
 169 failed"));
 170                         clnt_destroy(clnt);
 171                         yp_errno = YPXFR_RPC;
 172                         return(NULL);
 173                 }
 174                 clnt_destroy(clnt);
 175                 if (resp->stat != YP_TRUE) {
 176                         switch (resp->stat) {
 177                         case YP_NODOM:
 178                                 yp_errno = YPXFR_NODOM;
 179                                 break;
 180                         case YP_NOMAP:
 181                                 yp_errno = YPXFR_NOMAP;
 182                                 break;
 183                         case YP_YPERR:
 184                         default:
 185                                 yp_errno = YPXFR_YPERR;
 186                                 break;
 187                         }
 188                         return(NULL);
 189                 }
 190                 snprintf(mastername, sizeof(mastername), "%s", resp->peer);
 191 /*              xdr_free(xdr_ypresp_master, (char *)&resp); */
 192                 return((char *)&mastername);
 193         }
 194 }
 195
 196 unsigned long ypxfr_get_order(domain, map, source, yplib)
 197         char *domain;
 198         char *map;
 199         char *source;
 200         const int yplib;
 201 {
 202         if (yplib) {
 203                 unsigned long order;
 204                 int res;
 205                 if ((res = yp_order(domain, map, (int *)&order))) {
 206                         switch (res) {
 207                         case YPERR_DOMAIN:
 208                                 yp_errno = YPXFR_NODOM;
 209                                 break;
 210                         case YPERR_MAP:
 211                                 yp_errno = YPXFR_NOMAP;
 212                                 break;
 213                         case YPERR_YPERR:
 214                         default:
 215                                 yp_errno = YPXFR_YPERR;
 216                                 break;
 217                         }
 218                         return(0);
 219                 } else
 220                         return(order);
 221         } else {
 222                 CLIENT *clnt;
 223                 ypresp_order *resp;
 224                 ypreq_nokey req;
 225
 226                 if ((clnt = clnt_create(source,YPPROG,YPVERS,"udp")) == NULL) {
 227                         yp_error("%s",clnt_spcreateerror("couldn't create \
 228 udp handle to ypserv"));
 229                         yp_errno = YPXFR_RPC;
 230                         return(0);
 231                 }
 232                 req.map = map;
 233                 req.domain = domain;
 234                 if ((resp = ypproc_order_2(&req, clnt)) == NULL) {
 235                         yp_error("%s", clnt_sperror(clnt, "YPPROC_ORDER \
 236 failed"));
 237                         clnt_destroy(clnt);
 238                         yp_errno = YPXFR_RPC;
 239                         return(0);
 240                 }
 241                 clnt_destroy(clnt);
 242                 if (resp->stat != YP_TRUE) {
 243                         switch (resp->stat) {
 244                         case YP_NODOM:
 245                                 yp_errno = YPXFR_NODOM;
 246                                 break;
 247                         case YP_NOMAP:
 248                                 yp_errno = YPXFR_NOMAP;
 249                                 break;
 250                         case YP_YPERR:
 251                         default:
 252                                 yp_errno = YPXFR_YPERR;
 253                                 break;
 254                         }
 255                         return(0);
 256                 }
 257                 return(resp->ordernum);
 258         }
 259 }
 260
 261 int ypxfr_match(server, domain, map, key, keylen)
 262         char *server;
 263         char *domain;
 264         char *map;
 265         char *key;
 266         unsigned long keylen;
 267 {
 268         ypreq_key ypkey;
 269         ypresp_val *ypval;
 270         CLIENT *clnt;
 271         static char buf[YPMAXRECORD + 2];
 272
 273         bzero((char *)buf, sizeof(buf));
 274
 275         if ((clnt = clnt_create(server, YPPROG,YPVERS,"udp")) == NULL) {
 276                 yp_error("failed to create UDP handle: %s",
 277                                         clnt_spcreateerror(server));
 278                 return(0);
 279         }
 280
 281         ypkey.domain = domain;
 282         ypkey.map = map;
 283         ypkey.key.keydat_len = keylen;
 284         ypkey.key.keydat_val = key;
 285
 286         if ((ypval = ypproc_match_2(&ypkey, clnt)) == NULL) {
 287                 clnt_destroy(clnt);
 288                 yp_error("%s: %s", server,
 289                                 clnt_sperror(clnt,"YPPROC_MATCH failed"));
 290                 return(0);
 291         }
 292
 293         clnt_destroy(clnt);
 294
 295         if (ypval->stat != YP_TRUE) {
 296                 xdr_free(xdr_ypresp_val, (char *)ypval);
 297                 return(0);
 298         }
 299
 300         xdr_free(xdr_ypresp_val, (char *)ypval);
 301
 302         return(1);
 303 }