libexec/ypxfr/ypxfrd_getmap.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-4-Clause
   3  *
   4  * Copyright (c) 1995, 1996
   5  *      Bill Paul <wpaul@ctr.columbia.edu>.  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 Bill Paul.
  18  * 4. Neither the name of the author nor the names of any co-contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include <sys/cdefs.h>
  36 __FBSDID("$FreeBSD$");
  37
  38 #include <errno.h>
  39 #include <stdlib.h>
  40 #include <string.h>
  41 #include <time.h>
  42 #include <unistd.h>
  43 #include <rpcsvc/ypxfrd.h>
  44 #include <rpcsvc/yp.h>
  45 #include <rpc/rpc.h>
  46 #include <sys/uio.h>
  47 #include <sys/fcntl.h>
  48 #include <sys/stat.h>
  49 #include <sys/types.h>
  50 #include "ypxfr_extern.h"
  51
  52 static int fp = 0;
  53
  54 static bool_t
  55 xdr_my_xfr(register XDR *xdrs, xfr *objp)
  56 {
  57         while (1) {
  58                 if (!xdr_xfr(xdrs, objp))
  59                         return(FALSE);
  60                 if (objp->ok == TRUE) {
  61                         if (write(fp, objp->xfr_u.xfrblock_buf.xfrblock_buf_val,
  62                             objp->xfr_u.xfrblock_buf.xfrblock_buf_len) == -1) {
  63                                 yp_error("write failed: %s", strerror(errno));
  64                                 return(FALSE);
  65                         }
  66                 }
  67                 xdr_free((xdrproc_t)xdr_xfr, (char *)objp);
  68                 if (objp->ok == FALSE) {
  69                         switch (objp->xfr_u.xfrstat) {
  70                         case(XFR_DONE):
  71                                 return(TRUE);
  72                                 break;
  73                         case(XFR_READ_ERR):
  74                                 yp_error("got read error from rpc.ypxfrd");
  75                                 return(FALSE);
  76                                 break;
  77                         case(XFR_ACCESS):
  78                                 yp_error("rpc.ypxfrd couldn't access the map");
  79                                 return(FALSE);
  80                                 break;
  81                         case(XFR_DENIED):
  82                                 yp_error("access to map denied by rpc.ypxfrd");
  83                                 return(FALSE);
  84                                 break;
  85                         case(XFR_DB_TYPE_MISMATCH):
  86                                 yp_error("client/server DB type mismatch");
  87                                 return(FALSE);
  88                                 break;
  89                         case(XFR_DB_ENDIAN_MISMATCH):
  90                                 yp_error("client/server byte order mismatch");
  91                                 return(FALSE);
  92                                 break;
  93                         default:
  94                                 yp_error("got unknown status from rpc.ypxfrd");
  95                                 return(FALSE);
  96                                 break;
  97                         }
  98                 }
  99         }
 100 }
 101
 102 #define PERM_SECURE (S_IRUSR|S_IWUSR)
 103
 104 int
 105 ypxfrd_get_map(char *host, char *map, char *domain, char *tmpname)
 106 {
 107         CLIENT *clnt;
 108         struct ypxfr_mapname req;
 109         struct xfr resp;
 110         struct timeval timeout = { 0, 25 };
 111         int status = 0;
 112
 113         req.xfrmap = map;
 114         req.xfrdomain = domain;
 115         req.xfrmap_filename = "";
 116         req.xfr_db_type = XFR_DB_BSD_HASH;      /*
 117         req.xfr_byte_order = XFR_ENDIAN_ANY;     * Berkeley DB isn't
 118                                                  * byte-order sensitive.
 119                                                  */
 120
 121         bzero((char *)&resp, sizeof(resp));
 122
 123         if ((clnt = clnt_create(host, YPXFRD_FREEBSD_PROG,
 124                                 YPXFRD_FREEBSD_VERS, "tcp")) == NULL) {
 125                 return(1);
 126         }
 127
 128         if ((fp = open(tmpname, O_RDWR|O_CREAT, PERM_SECURE)) == -1) {
 129                 clnt_destroy(clnt);
 130                 yp_error("couldn't open %s: %s", tmpname, strerror(errno));
 131                 return(1);
 132         }
 133
 134         if (clnt_call(clnt,YPXFRD_GETMAP,
 135                         (xdrproc_t)xdr_ypxfr_mapname, (char *)&req,
 136                         (xdrproc_t)xdr_my_xfr, (char *)&resp,
 137                         timeout) != RPC_SUCCESS) {
 138                 yp_error("%s", clnt_sperror(clnt,"call to rpc.ypxfrd failed"));
 139                 status++;
 140                 unlink(tmpname);
 141         }
 142
 143         clnt_destroy(clnt);
 144         close(fp);
 145         return(status);
 146 }