rpc.subproj/rpc_callmsg.c

   1 /*
   2  * Copyright (c) 1999-2018 Apple 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 1.4 2003/06/23 17:24:59 majka Exp $";
  57 #endif
  58
  59 /*
  60  * rpc_callmsg.c
  61  *
  62  * Copyright (C) 1984, Sun Microsystems, Inc.
  63  *
  64  */
  65
  66 #include "libinfo_common.h"
  67
  68 #include <stdlib.h>
  69 #include <string.h>
  70 #include <sys/param.h>
  71
  72 #include <rpc/rpc.h>
  73
  74 extern bool_t           xdr_opaque_auth();
  75
  76 /*
  77  * XDR a call message
  78  */
  79 LIBINFO_EXPORT
  80 bool_t
  81 xdr_callmsg(xdrs, cmsg)
  82         register XDR *xdrs;
  83         register struct rpc_msg *cmsg;
  84 {
  85 #ifdef __LP64__
  86         int *buf;
  87 #else
  88         register long *buf;
  89 #endif
  90         register struct opaque_auth *oa;
  91
  92         if (xdrs->x_op == XDR_ENCODE) {
  93                 if (cmsg->rm_call.cb_cred.oa_length > MAX_AUTH_BYTES) {
  94                         return (FALSE);
  95                 }
  96                 if (cmsg->rm_call.cb_verf.oa_length > MAX_AUTH_BYTES) {
  97                         return (FALSE);
  98                 }
  99 #ifdef __LP64__
 100                 buf = (int *)XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT
 101                                                                  + RNDUP(cmsg->rm_call.cb_cred.oa_length)
 102                                                                  + 2 * BYTES_PER_XDR_UNIT
 103                                                                  + RNDUP(cmsg->rm_call.cb_verf.oa_length));
 104 #else
 105                 buf = (long *)XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT
 106                                                                  + RNDUP(cmsg->rm_call.cb_cred.oa_length)
 107                                                                  + 2 * BYTES_PER_XDR_UNIT
 108                                                                  + RNDUP(cmsg->rm_call.cb_verf.oa_length));
 109 #endif
 110                 if (buf != NULL) {
 111                         IXDR_PUT_LONG(buf, cmsg->rm_xid);
 112                         IXDR_PUT_ENUM(buf, cmsg->rm_direction);
 113                         if (cmsg->rm_direction != CALL) {
 114                                 return (FALSE);
 115                         }
 116                         IXDR_PUT_LONG(buf, cmsg->rm_call.cb_rpcvers);
 117                         if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
 118                                 return (FALSE);
 119                         }
 120                         IXDR_PUT_LONG(buf, cmsg->rm_call.cb_prog);
 121                         IXDR_PUT_LONG(buf, cmsg->rm_call.cb_vers);
 122                         IXDR_PUT_LONG(buf, cmsg->rm_call.cb_proc);
 123                         oa = &cmsg->rm_call.cb_cred;
 124                         IXDR_PUT_ENUM(buf, oa->oa_flavor);
 125                         IXDR_PUT_LONG(buf, oa->oa_length);
 126                         if (oa->oa_length) {
 127                                 bcopy(oa->oa_base, (caddr_t)buf, oa->oa_length);
 128 #ifdef __LP64__
 129                                 buf += RNDUP(oa->oa_length) / sizeof (int);
 130 #else
 131                                 buf += RNDUP(oa->oa_length) / sizeof (long);
 132 #endif
 133                         }
 134                         oa = &cmsg->rm_call.cb_verf;
 135                         IXDR_PUT_ENUM(buf, oa->oa_flavor);
 136                         IXDR_PUT_LONG(buf, oa->oa_length);
 137                         if (oa->oa_length) {
 138                                 bcopy(oa->oa_base, (caddr_t)buf, oa->oa_length);
 139                                 /* no real need....
 140                                 * N.B. Fix this for __LP64__ if it is uncommented *
 141                                 buf += RNDUP(oa->oa_length) / sizeof (long);
 142                                 */
 143                         }
 144                         return (TRUE);
 145                 }
 146         }
 147         if (xdrs->x_op == XDR_DECODE) {
 148 #ifdef __LP64__
 149                 buf = (int *)XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT);
 150 #else
 151                 buf = (long *)XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT);
 152 #endif
 153                 if (buf != NULL) {
 154                         cmsg->rm_xid = IXDR_GET_LONG(buf);
 155                         cmsg->rm_direction = IXDR_GET_ENUM(buf, enum msg_type);
 156                         if (cmsg->rm_direction != CALL) {
 157                                 return (FALSE);
 158                         }
 159                         cmsg->rm_call.cb_rpcvers = IXDR_GET_LONG(buf);
 160                         if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
 161                                 return (FALSE);
 162                         }
 163                         cmsg->rm_call.cb_prog = IXDR_GET_LONG(buf);
 164                         cmsg->rm_call.cb_vers = IXDR_GET_LONG(buf);
 165                         cmsg->rm_call.cb_proc = IXDR_GET_LONG(buf);
 166                         oa = &cmsg->rm_call.cb_cred;
 167                         oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
 168                         oa->oa_length = IXDR_GET_LONG(buf);
 169                         if (oa->oa_length) {
 170                                 if (oa->oa_length > MAX_AUTH_BYTES) {
 171                                         return (FALSE);
 172                                 }
 173                                 if (oa->oa_base == NULL) {
 174                                         oa->oa_base = (caddr_t)
 175                                                 mem_alloc(oa->oa_length);
 176                                 }
 177 #ifdef __LP64__
 178                                 buf = (int *)XDR_INLINE(xdrs, RNDUP(oa->oa_length));
 179 #else
 180                                 buf = (long *)XDR_INLINE(xdrs, RNDUP(oa->oa_length));
 181 #endif
 182                                 if (buf == NULL) {
 183                                         if (xdr_opaque(xdrs, oa->oa_base,
 184                                             oa->oa_length) == FALSE) {
 185                                                 return (FALSE);
 186                                         }
 187                                 } else {
 188                                         bcopy((caddr_t)buf, oa->oa_base,
 189                                             oa->oa_length);
 190                                         /* no real need....
 191                                         * N.B. Fix this for __LP64__ if it is uncommented *
 192                                         buf += RNDUP(oa->oa_length) / sizeof (long);
 193                                         */
 194                                 }
 195                         }
 196                         oa = &cmsg->rm_call.cb_verf;
 197 #ifdef __LP64__
 198                         buf = (int *)XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT);
 199 #else
 200                         buf = (long *)XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT);
 201 #endif
 202                         if (buf == NULL) {
 203                                 if (xdr_enum(xdrs, &oa->oa_flavor) == FALSE ||
 204                                     xdr_u_int(xdrs, &oa->oa_length) == FALSE) {
 205                                         return (FALSE);
 206                                 }
 207                         } else {
 208                                 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
 209                                 oa->oa_length = IXDR_GET_LONG(buf);
 210                         }
 211                         if (oa->oa_length) {
 212                                 if (oa->oa_length > MAX_AUTH_BYTES) {
 213                                         return (FALSE);
 214                                 }
 215                                 if (oa->oa_base == NULL) {
 216                                         oa->oa_base = (caddr_t)
 217                                                 mem_alloc(oa->oa_length);
 218                                 }
 219 #ifdef __LP64__
 220                                 buf = (int *)XDR_INLINE(xdrs, RNDUP(oa->oa_length));
 221 #else
 222                                 buf = (long *)XDR_INLINE(xdrs, RNDUP(oa->oa_length));
 223 #endif
 224                                 if (buf == NULL) {
 225                                         if (xdr_opaque(xdrs, oa->oa_base,
 226                                             oa->oa_length) == FALSE) {
 227                                                 return (FALSE);
 228                                         }
 229                                 } else {
 230                                         bcopy((caddr_t)buf, oa->oa_base,
 231                                             oa->oa_length);
 232                                         /* no real need...
 233                                         * N.B. Fix this for __LP64__ if it is uncommented *
 234                                         buf += RNDUP(oa->oa_length) / sizeof (long);
 235                                         */
 236                                 }
 237                         }
 238                         return (TRUE);
 239                 }
 240         }
 241         if (
 242             xdr_u_long(xdrs, &(cmsg->rm_xid)) &&
 243             xdr_enum(xdrs, (enum_t *)&(cmsg->rm_direction)) &&
 244             (cmsg->rm_direction == CALL) &&
 245             xdr_u_long(xdrs, &(cmsg->rm_call.cb_rpcvers)) &&
 246             (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) &&
 247             xdr_u_long(xdrs, &(cmsg->rm_call.cb_prog)) &&
 248             xdr_u_long(xdrs, &(cmsg->rm_call.cb_vers)) &&
 249             xdr_u_long(xdrs, &(cmsg->rm_call.cb_proc)) &&
 250             xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_cred)) )
 251             return (xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_verf)));
 252         return (FALSE);
 253 }
 254