contrib/amd/libamu/misc_rpc.c

   1 /*
   2  * Copyright (c) 1997-1999 Erez Zadok
   3  * Copyright (c) 1990 Jan-Simon Pendry
   4  * Copyright (c) 1990 Imperial College of Science, Technology & Medicine
   5  * Copyright (c) 1990 The Regents of the University of California.
   6  * All rights reserved.
   7  *
   8  * This code is derived from software contributed to Berkeley by
   9  * Jan-Simon Pendry at Imperial College, London.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. All advertising materials mentioning features or use of this software
  20  *    must display the following acknowledgment:
  21  *      This product includes software developed by the University of
  22  *      California, Berkeley and its contributors.
  23  * 4. Neither the name of the University nor the names of its contributors
  24  *    may be used to endorse or promote products derived from this software
  25  *    without specific prior written permission.
  26  *
  27  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  37  * SUCH DAMAGE.
  38  *
  39  *      %W% (Berkeley) %G%
  40  *
  41  * $Id: misc_rpc.c,v 1.2 1999/01/10 21:54:37 ezk Exp $
  42  *
  43  */
  44
  45 /*
  46  * Additions to Sun RPC.
  47  */
  48
  49 #ifdef HAVE_CONFIG_H
  50 # include <config.h>
  51 #endif /* HAVE_CONFIG_H */
  52 #include <am_defs.h>
  53 #include <amu.h>
  54
  55 /*
  56  * Some systems renamed _seterr_reply to __seterr_reply (with two
  57  * leading underscores)
  58  */
  59 #if !defined(HAVE__SETERR_REPLY) && defined(HAVE___SETERR_REPLY)
  60 # define _seterr_reply  __seterr_reply
  61 #endif /* !defined(HAVE__SETERR_REPLY) && defined(HAVE___SETERR_REPLY) */
  62
  63
  64 void
  65 rpc_msg_init(struct rpc_msg *mp, u_long prog, u_long vers, u_long proc)
  66 {
  67   /*
  68    * Initialize the message
  69    */
  70   memset((voidp) mp, 0, sizeof(*mp));
  71   mp->rm_xid = 0;
  72   mp->rm_direction = CALL;
  73   mp->rm_call.cb_rpcvers = RPC_MSG_VERSION;
  74   mp->rm_call.cb_prog = prog;
  75   mp->rm_call.cb_vers = vers;
  76   mp->rm_call.cb_proc = proc;
  77 }
  78
  79
  80 /*
  81  * Field reply to call to mountd
  82  */
  83 int
  84 pickup_rpc_reply(voidp pkt, int len, voidp where, XDRPROC_T_TYPE where_xdr)
  85 {
  86   XDR reply_xdr;
  87   int ok;
  88   struct rpc_err err;
  89   struct rpc_msg reply_msg;
  90   int error = 0;
  91
  92   /* memset((voidp) &err, 0, sizeof(err)); */
  93   memset((voidp) &reply_msg, 0, sizeof(reply_msg));
  94   memset((voidp) &reply_xdr, 0, sizeof(reply_xdr));
  95
  96   reply_msg.acpted_rply.ar_results.where = (caddr_t) where;
  97   reply_msg.acpted_rply.ar_results.proc = where_xdr;
  98
  99   xdrmem_create(&reply_xdr, pkt, len, XDR_DECODE);
 100
 101   ok = xdr_replymsg(&reply_xdr, &reply_msg);
 102   if (!ok) {
 103     error = EIO;
 104     goto drop;
 105   }
 106   _seterr_reply(&reply_msg, &err);
 107   if (err.re_status != RPC_SUCCESS) {
 108     error = EIO;
 109     goto drop;
 110   }
 111
 112 drop:
 113   if (reply_msg.rm_reply.rp_stat == MSG_ACCEPTED &&
 114       reply_msg.acpted_rply.ar_verf.oa_base) {
 115     reply_xdr.x_op = XDR_FREE;
 116     (void) xdr_opaque_auth(&reply_xdr,
 117                            &reply_msg.acpted_rply.ar_verf);
 118   }
 119   xdr_destroy(&reply_xdr);
 120
 121   return error;
 122 }
 123
 124
 125 int
 126 make_rpc_packet(char *buf, int buflen, u_long proc, struct rpc_msg *mp, voidp arg, XDRPROC_T_TYPE arg_xdr, AUTH *auth)
 127 {
 128   XDR msg_xdr;
 129   int len;
 130
 131   xdrmem_create(&msg_xdr, buf, buflen, XDR_ENCODE);
 132
 133   /*
 134    * Basic protocol header
 135    */
 136   if (!xdr_callhdr(&msg_xdr, mp))
 137     return -EIO;
 138
 139   /*
 140    * Called procedure number
 141    */
 142   if (!xdr_enum(&msg_xdr, (enum_t *) & proc))
 143     return -EIO;
 144
 145   /*
 146    * Authorization
 147    */
 148   if (!AUTH_MARSHALL(auth, &msg_xdr))
 149     return -EIO;
 150
 151   /*
 152    * Arguments
 153    */
 154   if (!(*arg_xdr) (&msg_xdr, arg))
 155     return -EIO;
 156
 157   /*
 158    * Determine length
 159    */
 160   len = xdr_getpos(&msg_xdr);
 161
 162   /*
 163    * Throw away xdr
 164    */
 165   xdr_destroy(&msg_xdr);
 166
 167   return len;
 168 }