libexec/ypxfr/ypxfr_getmap.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_getmap.c,v 1.7.2.2 2002/02/15 00:46:54 des Exp $
  33  * $DragonFly: src/libexec/ypxfr/ypxfr_getmap.c,v 1.2 2003/06/17 04:27:08 dillon Exp $
  34  */
  35
  36 #include <stdio.h>
  37 #include <time.h>
  38 #include <sys/types.h>
  39 #include <rpc/rpc.h>
  40 #include <rpc/xdr.h>
  41 #include <rpcsvc/yp.h>
  42 #include "ypxfr_extern.h"
  43
  44 extern bool_t xdr_ypresp_all_seq(XDR *, unsigned long *);
  45
  46 int (*ypresp_allfn)(int, char *, int, char *, int, char *);
  47 void *ypresp_data;
  48 extern DB *specdbp;
  49 extern enum ypstat yp_errno;
  50
  51 /*
  52  * This is largely the same as yp_all() except we do the transfer
  53  * from a specific server without the aid of ypbind(8). We need to
  54  * be able to specify the source host explicitly since ypxfr may
  55  * only transfer maps from the NIS master server for any given domain.
  56  * However, if we use the libc version of yp_all(), we could end up
  57  * talking to one of the slaves instead. We do need to dig into libc
  58  * a little though, since it contains the magic XDR function we need.
  59  */
  60 int
  61 ypxfr_get_map(char *map, char *domain, char *host,
  62     int (*callback)(int, char *, int, char *, int, char *))
  63 {
  64         CLIENT *clnt;
  65         ypreq_nokey req;
  66         unsigned long status;
  67         struct timeval timeout;
  68
  69         timeout.tv_usec = 0;
  70         timeout.tv_sec = 10;
  71
  72         /* YPPROC_ALL is a TCP service */
  73         if ((clnt = clnt_create(host, YPPROG, YPVERS, "tcp")) == NULL) {
  74                 yp_error("%s", clnt_spcreateerror("failed to \
  75 create tcp handle"));
  76                 yp_errno = YPXFR_YPERR;
  77                 return(1);
  78         }
  79
  80         req.domain = domain;
  81         req.map = map;
  82         ypresp_allfn = callback;
  83         ypresp_data = NULL;
  84
  85         (void)clnt_call(clnt, YPPROC_ALL, (xdrproc_t)xdr_ypreq_nokey, &req,
  86             (xdrproc_t)xdr_ypresp_all_seq, &status, timeout);
  87
  88         clnt_destroy(clnt);
  89
  90         if (status == YP_NOMORE)
  91                 return(0);
  92
  93         if (status != YP_TRUE) {
  94                 yp_errno = YPXFR_YPERR;
  95                 return(1);
  96         }
  97
  98         return(0);
  99 }