rpc.subproj/rpc_callmsg.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.1 (the "License").  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License.
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 /*
  25  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
  26  * unrestricted use provided that this legend is included on all tape
  27  * media and as a part of the software program in whole or part.  Users
  28  * may copy or modify Sun RPC without charge, but are not authorized
  29  * to license or distribute it to anyone else except as part of a product or
  30  * program developed by the user.
  31  *
  32  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  33  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  34  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  35  *
  36  * Sun RPC is provided with no support and without any obligation on the
  37  * part of Sun Microsystems, Inc. to assist in its use, correction,
  38  * modification or enhancement.
  39  *
  40  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  41  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  42  * OR ANY PART THEREOF.
  43  *
  44  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  45  * or profits or other special, indirect and consequential damages, even if
  46  * Sun has been advised of the possibility of such damages.
  47  *
  48  * Sun Microsystems, Inc.
  49  * 2550 Garcia Avenue
  50  * Mountain View, California  94043
  51  */
  52
  53 #if defined(LIBC_SCCS) && !defined(lint)
  54 /*static char *sccsid = "from: @(#)rpc_callmsg.c 1.4 87/08/11 Copyr 1984 Sun Micro";*/
  55 /*static char *sccsid = "from: @(#)rpc_callmsg.c        2.1 88/07/29 4.0 RPCSRC";*/
  56 static char *rcsid = "$Id: rpc_callmsg.c,v 1.3 2002/02/19 20:36:24 epeyton Exp $";
  57 #endif
  58
  59 /*
  60  * rpc_callmsg.c
  61  *
  62  * Copyright (C) 1984, Sun Microsystems, Inc.
  63  *
  64  */
  65
  66 #include <stdlib.h>
  67 #include <string.h>
  68 #include <sys/param.h>
  69
  70 #include <rpc/rpc.h>
  71
  72 extern bool_t           xdr_opaque_auth();
  73
  74 /*
  75  * XDR a call message
  76  */
  77 bool_t
  78 xdr_callmsg(xdrs, cmsg)
  79         register XDR *xdrs;
  80         register struct rpc_msg *cmsg;
  81 {
  82         register long *buf;
  83         register struct opaque_auth *oa;
  84
  85         if (xdrs->x_op == XDR_ENCODE) {
  86                 if (cmsg->rm_call.cb_cred.oa_length > MAX_AUTH_BYTES) {
  87                         return (FALSE);
  88                 }
  89                 if (cmsg->rm_call.cb_verf.oa_length > MAX_AUTH_BYTES) {
  90                         return (FALSE);
  91                 }
  92                 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT
  93                         + RNDUP(cmsg->rm_call.cb_cred.oa_length)
  94                         + 2 * BYTES_PER_XDR_UNIT
  95                         + RNDUP(cmsg->rm_call.cb_verf.oa_length));
  96                 if (buf != NULL) {
  97                         IXDR_PUT_LONG(buf, cmsg->rm_xid);
  98                         IXDR_PUT_ENUM(buf, cmsg->rm_direction);
  99                         if (cmsg->rm_direction != CALL) {
 100                                 return (FALSE);
 101                         }
 102                         IXDR_PUT_LONG(buf, cmsg->rm_call.cb_rpcvers);
 103                         if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
 104                                 return (FALSE);
 105                         }
 106                         IXDR_PUT_LONG(buf, cmsg->rm_call.cb_prog);
 107                         IXDR_PUT_LONG(buf, cmsg->rm_call.cb_vers);
 108                         IXDR_PUT_LONG(buf, cmsg->rm_call.cb_proc);
 109                         oa = &cmsg->rm_call.cb_cred;
 110                         IXDR_PUT_ENUM(buf, oa->oa_flavor);
 111                         IXDR_PUT_LONG(buf, oa->oa_length);
 112                         if (oa->oa_length) {
 113                                 bcopy(oa->oa_base, (caddr_t)buf, oa->oa_length);
 114                                 buf += RNDUP(oa->oa_length) / sizeof (long);
 115                         }
 116                         oa = &cmsg->rm_call.cb_verf;
 117                         IXDR_PUT_ENUM(buf, oa->oa_flavor);
 118                         IXDR_PUT_LONG(buf, oa->oa_length);
 119                         if (oa->oa_length) {
 120                                 bcopy(oa->oa_base, (caddr_t)buf, oa->oa_length);
 121                                 /* no real need....
 122                                 buf += RNDUP(oa->oa_length) / sizeof (long);
 123                                 */
 124                         }
 125                         return (TRUE);
 126                 }
 127         }
 128         if (xdrs->x_op == XDR_DECODE) {
 129                 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT);
 130                 if (buf != NULL) {
 131                         cmsg->rm_xid = IXDR_GET_LONG(buf);
 132                         cmsg->rm_direction = IXDR_GET_ENUM(buf, enum msg_type);
 133                         if (cmsg->rm_direction != CALL) {
 134                                 return (FALSE);
 135                         }
 136                         cmsg->rm_call.cb_rpcvers = IXDR_GET_LONG(buf);
 137                         if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
 138                                 return (FALSE);
 139                         }
 140                         cmsg->rm_call.cb_prog = IXDR_GET_LONG(buf);
 141                         cmsg->rm_call.cb_vers = IXDR_GET_LONG(buf);
 142                         cmsg->rm_call.cb_proc = IXDR_GET_LONG(buf);
 143                         oa = &cmsg->rm_call.cb_cred;
 144                         oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
 145                         oa->oa_length = IXDR_GET_LONG(buf);
 146                         if (oa->oa_length) {
 147                                 if (oa->oa_length > MAX_AUTH_BYTES) {
 148                                         return (FALSE);
 149                                 }
 150                                 if (oa->oa_base == NULL) {
 151                                         oa->oa_base = (caddr_t)
 152                                                 mem_alloc(oa->oa_length);
 153                                 }
 154                                 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
 155                                 if (buf == NULL) {
 156                                         if (xdr_opaque(xdrs, oa->oa_base,
 157                                             oa->oa_length) == FALSE) {
 158                                                 return (FALSE);
 159                                         }
 160                                 } else {
 161                                         bcopy((caddr_t)buf, oa->oa_base,
 162                                             oa->oa_length);
 163                                         /* no real need....
 164                                         buf += RNDUP(oa->oa_length) /
 165                                                 sizeof (long);
 166                                         */
 167                                 }
 168                         }
 169                         oa = &cmsg->rm_call.cb_verf;
 170                         buf = XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT);
 171                         if (buf == NULL) {
 172                                 if (xdr_enum(xdrs, &oa->oa_flavor) == FALSE ||
 173                                     xdr_u_int(xdrs, &oa->oa_length) == FALSE) {
 174                                         return (FALSE);
 175                                 }
 176                         } else {
 177                                 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
 178                                 oa->oa_length = IXDR_GET_LONG(buf);
 179                         }
 180                         if (oa->oa_length) {
 181                                 if (oa->oa_length > MAX_AUTH_BYTES) {
 182                                         return (FALSE);
 183                                 }
 184                                 if (oa->oa_base == NULL) {
 185                                         oa->oa_base = (caddr_t)
 186                                                 mem_alloc(oa->oa_length);
 187                                 }
 188                                 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
 189                                 if (buf == NULL) {
 190                                         if (xdr_opaque(xdrs, oa->oa_base,
 191                                             oa->oa_length) == FALSE) {
 192                                                 return (FALSE);
 193                                         }
 194                                 } else {
 195                                         bcopy((caddr_t)buf, oa->oa_base,
 196                                             oa->oa_length);
 197                                         /* no real need...
 198                                         buf += RNDUP(oa->oa_length) /
 199                                                 sizeof (long);
 200                                         */
 201                                 }
 202                         }
 203                         return (TRUE);
 204                 }
 205         }
 206         if (
 207             xdr_u_long(xdrs, &(cmsg->rm_xid)) &&
 208             xdr_enum(xdrs, (enum_t *)&(cmsg->rm_direction)) &&
 209             (cmsg->rm_direction == CALL) &&
 210             xdr_u_long(xdrs, &(cmsg->rm_call.cb_rpcvers)) &&
 211             (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) &&
 212             xdr_u_long(xdrs, &(cmsg->rm_call.cb_prog)) &&
 213             xdr_u_long(xdrs, &(cmsg->rm_call.cb_vers)) &&
 214             xdr_u_long(xdrs, &(cmsg->rm_call.cb_proc)) &&
 215             xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_cred)) )
 216             return (xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_verf)));
 217         return (FALSE);
 218 }
 219