rpc.subproj/rpc_callmsg.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
  27  * unrestricted use provided that this legend is included on all tape
  28  * media and as a part of the software program in whole or part.  Users
  29  * may copy or modify Sun RPC without charge, but are not authorized
  30  * to license or distribute it to anyone else except as part of a product or
  31  * program developed by the user.
  32  *
  33  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  34  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  35  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  36  *
  37  * Sun RPC is provided with no support and without any obligation on the
  38  * part of Sun Microsystems, Inc. to assist in its use, correction,
  39  * modification or enhancement.
  40  *
  41  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  42  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  43  * OR ANY PART THEREOF.
  44  *
  45  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  46  * or profits or other special, indirect and consequential damages, even if
  47  * Sun has been advised of the possibility of such damages.
  48  *
  49  * Sun Microsystems, Inc.
  50  * 2550 Garcia Avenue
  51  * Mountain View, California  94043
  52  */
  53
  54 #if defined(LIBC_SCCS) && !defined(lint)
  55 /*static char *sccsid = "from: @(#)rpc_callmsg.c 1.4 87/08/11 Copyr 1984 Sun Micro";*/
  56 /*static char *sccsid = "from: @(#)rpc_callmsg.c        2.1 88/07/29 4.0 RPCSRC";*/
  57 static char *rcsid = "$Id: rpc_callmsg.c,v 1.4 2003/06/23 17:24:59 majka Exp $";
  58 #endif
  59
  60 /*
  61  * rpc_callmsg.c
  62  *
  63  * Copyright (C) 1984, Sun Microsystems, Inc.
  64  *
  65  */
  66
  67 #include <stdlib.h>
  68 #include <string.h>
  69 #include <sys/param.h>
  70
  71 #include <rpc/rpc.h>
  72
  73 extern bool_t           xdr_opaque_auth();
  74
  75 /*
  76  * XDR a call message
  77  */
  78 bool_t
  79 xdr_callmsg(xdrs, cmsg)
  80         register XDR *xdrs;
  81         register struct rpc_msg *cmsg;
  82 {
  83         register long *buf;
  84         register struct opaque_auth *oa;
  85
  86         if (xdrs->x_op == XDR_ENCODE) {
  87                 if (cmsg->rm_call.cb_cred.oa_length > MAX_AUTH_BYTES) {
  88                         return (FALSE);
  89                 }
  90                 if (cmsg->rm_call.cb_verf.oa_length > MAX_AUTH_BYTES) {
  91                         return (FALSE);
  92                 }
  93                 buf = (long *)XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT
  94                         + RNDUP(cmsg->rm_call.cb_cred.oa_length)
  95                         + 2 * BYTES_PER_XDR_UNIT
  96                         + RNDUP(cmsg->rm_call.cb_verf.oa_length));
  97                 if (buf != NULL) {
  98                         IXDR_PUT_LONG(buf, cmsg->rm_xid);
  99                         IXDR_PUT_ENUM(buf, cmsg->rm_direction);
 100                         if (cmsg->rm_direction != CALL) {
 101                                 return (FALSE);
 102                         }
 103                         IXDR_PUT_LONG(buf, cmsg->rm_call.cb_rpcvers);
 104                         if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
 105                                 return (FALSE);
 106                         }
 107                         IXDR_PUT_LONG(buf, cmsg->rm_call.cb_prog);
 108                         IXDR_PUT_LONG(buf, cmsg->rm_call.cb_vers);
 109                         IXDR_PUT_LONG(buf, cmsg->rm_call.cb_proc);
 110                         oa = &cmsg->rm_call.cb_cred;
 111                         IXDR_PUT_ENUM(buf, oa->oa_flavor);
 112                         IXDR_PUT_LONG(buf, oa->oa_length);
 113                         if (oa->oa_length) {
 114                                 bcopy(oa->oa_base, (caddr_t)buf, oa->oa_length);
 115                                 buf += RNDUP(oa->oa_length) / sizeof (long);
 116                         }
 117                         oa = &cmsg->rm_call.cb_verf;
 118                         IXDR_PUT_ENUM(buf, oa->oa_flavor);
 119                         IXDR_PUT_LONG(buf, oa->oa_length);
 120                         if (oa->oa_length) {
 121                                 bcopy(oa->oa_base, (caddr_t)buf, oa->oa_length);
 122                                 /* no real need....
 123                                 buf += RNDUP(oa->oa_length) / sizeof (long);
 124                                 */
 125                         }
 126                         return (TRUE);
 127                 }
 128         }
 129         if (xdrs->x_op == XDR_DECODE) {
 130                 buf = (long *)XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT);
 131                 if (buf != NULL) {
 132                         cmsg->rm_xid = IXDR_GET_LONG(buf);
 133                         cmsg->rm_direction = IXDR_GET_ENUM(buf, enum msg_type);
 134                         if (cmsg->rm_direction != CALL) {
 135                                 return (FALSE);
 136                         }
 137                         cmsg->rm_call.cb_rpcvers = IXDR_GET_LONG(buf);
 138                         if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
 139                                 return (FALSE);
 140                         }
 141                         cmsg->rm_call.cb_prog = IXDR_GET_LONG(buf);
 142                         cmsg->rm_call.cb_vers = IXDR_GET_LONG(buf);
 143                         cmsg->rm_call.cb_proc = IXDR_GET_LONG(buf);
 144                         oa = &cmsg->rm_call.cb_cred;
 145                         oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
 146                         oa->oa_length = IXDR_GET_LONG(buf);
 147                         if (oa->oa_length) {
 148                                 if (oa->oa_length > MAX_AUTH_BYTES) {
 149                                         return (FALSE);
 150                                 }
 151                                 if (oa->oa_base == NULL) {
 152                                         oa->oa_base = (caddr_t)
 153                                                 mem_alloc(oa->oa_length);
 154                                 }
 155                                 buf = (long *)XDR_INLINE(xdrs, RNDUP(oa->oa_length));
 156                                 if (buf == NULL) {
 157                                         if (xdr_opaque(xdrs, oa->oa_base,
 158                                             oa->oa_length) == FALSE) {
 159                                                 return (FALSE);
 160                                         }
 161                                 } else {
 162                                         bcopy((caddr_t)buf, oa->oa_base,
 163                                             oa->oa_length);
 164                                         /* no real need....
 165                                         buf += RNDUP(oa->oa_length) /
 166                                                 sizeof (long);
 167                                         */
 168                                 }
 169                         }
 170                         oa = &cmsg->rm_call.cb_verf;
 171                         buf = (long *)XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT);
 172                         if (buf == NULL) {
 173                                 if (xdr_enum(xdrs, &oa->oa_flavor) == FALSE ||
 174                                     xdr_u_int(xdrs, &oa->oa_length) == FALSE) {
 175                                         return (FALSE);
 176                                 }
 177                         } else {
 178                                 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
 179                                 oa->oa_length = IXDR_GET_LONG(buf);
 180                         }
 181                         if (oa->oa_length) {
 182                                 if (oa->oa_length > MAX_AUTH_BYTES) {
 183                                         return (FALSE);
 184                                 }
 185                                 if (oa->oa_base == NULL) {
 186                                         oa->oa_base = (caddr_t)
 187                                                 mem_alloc(oa->oa_length);
 188                                 }
 189                                 buf = (long *)XDR_INLINE(xdrs, RNDUP(oa->oa_length));
 190                                 if (buf == NULL) {
 191                                         if (xdr_opaque(xdrs, oa->oa_base,
 192                                             oa->oa_length) == FALSE) {
 193                                                 return (FALSE);
 194                                         }
 195                                 } else {
 196                                         bcopy((caddr_t)buf, oa->oa_base,
 197                                             oa->oa_length);
 198                                         /* no real need...
 199                                         buf += RNDUP(oa->oa_length) /
 200                                                 sizeof (long);
 201                                         */
 202                                 }
 203                         }
 204                         return (TRUE);
 205                 }
 206         }
 207         if (
 208             xdr_u_long(xdrs, &(cmsg->rm_xid)) &&
 209             xdr_enum(xdrs, (enum_t *)&(cmsg->rm_direction)) &&
 210             (cmsg->rm_direction == CALL) &&
 211             xdr_u_long(xdrs, &(cmsg->rm_call.cb_rpcvers)) &&
 212             (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) &&
 213             xdr_u_long(xdrs, &(cmsg->rm_call.cb_prog)) &&
 214             xdr_u_long(xdrs, &(cmsg->rm_call.cb_vers)) &&
 215             xdr_u_long(xdrs, &(cmsg->rm_call.cb_proc)) &&
 216             xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_cred)) )
 217             return (xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_verf)));
 218         return (FALSE);
 219 }
 220