libexec/ypxfr/ypxfrd_getmap.c

   1 /*
   2  * Copyright (c) 1995, 1996
   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/ypxfrd_getmap.c,v 1.7.2.1 2002/02/15 00:46:54 des Exp $
  33  * $DragonFly: src/libexec/ypxfr/ypxfrd_getmap.c,v 1.2 2003/06/17 04:27:08 dillon Exp $
  34  */
  35
  36 #include <errno.h>
  37 #include <stdlib.h>
  38 #include <string.h>
  39 #include <time.h>
  40 #include <unistd.h>
  41 #include <rpcsvc/ypxfrd.h>
  42 #include <rpcsvc/yp.h>
  43 #include <rpc/rpc.h>
  44 #include <sys/uio.h>
  45 #include <sys/fcntl.h>
  46 #include <sys/stat.h>
  47 #include <sys/types.h>
  48 #include "ypxfr_extern.h"
  49
  50 int fp = 0;
  51
  52 static bool_t
  53 xdr_my_xfr(register XDR *xdrs, xfr *objp)
  54 {
  55         while (1) {
  56                 if (!xdr_xfr(xdrs, objp))
  57                         return(FALSE);
  58                 if (objp->ok == TRUE) {
  59                         if (write(fp, objp->xfr_u.xfrblock_buf.xfrblock_buf_val,
  60                             objp->xfr_u.xfrblock_buf.xfrblock_buf_len) == -1) {
  61                                 yp_error("write failed: %s", strerror(errno));
  62                                 return(FALSE);
  63                         }
  64                 }
  65                 xdr_free((xdrproc_t)xdr_xfr, objp);
  66                 if (objp->ok == FALSE) {
  67                         switch (objp->xfr_u.xfrstat) {
  68                         case(XFR_DONE):
  69                                 return(TRUE);
  70                                 break;
  71                         case(XFR_READ_ERR):
  72                                 yp_error("got read error from rpc.ypxfrd");
  73                                 return(FALSE);
  74                                 break;
  75                         case(XFR_ACCESS):
  76                                 yp_error("rpc.ypxfrd couldn't access the map");
  77                                 return(FALSE);
  78                                 break;
  79                         case(XFR_DENIED):
  80                                 yp_error("access to map denied by rpc.ypxfrd");
  81                                 return(FALSE);
  82                                 break;
  83                         case(XFR_DB_TYPE_MISMATCH):
  84                                 yp_error("client/server DB type mismatch");
  85                                 return(FALSE);
  86                                 break;
  87                         case(XFR_DB_ENDIAN_MISMATCH):
  88                                 yp_error("client/server byte order mismatch");
  89                                 return(FALSE);
  90                                 break;
  91                         default:
  92                                 yp_error("got unknown status from rpc.ypxfrd");
  93                                 return(FALSE);
  94                                 break;
  95                         }
  96                 }
  97         }
  98 }
  99
 100 #define PERM_SECURE (S_IRUSR|S_IWUSR)
 101
 102 int
 103 ypxfrd_get_map(char *host, char *map, char *domain, char *tmpname)
 104 {
 105         CLIENT *clnt;
 106         struct ypxfr_mapname req;
 107         struct xfr resp;
 108         struct timeval timeout = { 0, 25 };
 109         int status = 0;
 110
 111         req.xfrmap = map;
 112         req.xfrdomain = domain;
 113         req.xfrmap_filename = "";
 114         req.xfr_db_type = XFR_DB_BSD_HASH;      /*
 115         req.xfr_byte_order = XFR_ENDIAN_ANY;     * Berkeley DB isn't
 116                                                  * byte-order sensitive.
 117                                                  */
 118
 119         bzero((char *)&resp, sizeof(resp));
 120
 121         if ((clnt = clnt_create(host, YPXFRD_FREEBSD_PROG,
 122                                 YPXFRD_FREEBSD_VERS, "tcp")) == NULL) {
 123                 return(1);
 124         }
 125
 126         if ((fp = open(tmpname, O_RDWR|O_CREAT, PERM_SECURE)) == -1) {
 127                 clnt_destroy(clnt);
 128                 yp_error("couldn't open %s: %s", tmpname, strerror(errno));
 129                 return(1);
 130         }
 131
 132         if (clnt_call(clnt, YPXFRD_GETMAP,
 133                         (xdrproc_t)xdr_ypxfr_mapname, (char *)&req,
 134                         (xdrproc_t)xdr_my_xfr, (char *)&resp,
 135                         timeout) != RPC_SUCCESS) {
 136                 yp_error("%s", clnt_sperror(clnt,"call to rpc.ypxfrd failed"));
 137                 status++;
 138                 unlink(tmpname);
 139         }
 140
 141         clnt_destroy(clnt);
 142         close(fp);
 143         return(status);
 144 }