lib/libc/rpc/rpc_callmsg.c

   1 /*      $NetBSD: rpc_callmsg.c,v 1.16 2000/07/14 08:40:42 fvdl Exp $    */
   2
   3 /*-
   4  * Copyright (c) 2009, Sun Microsystems, Inc.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions are met:
   9  * - Redistributions of source code must retain the above copyright notice,
  10  *   this list of conditions and the following disclaimer.
  11  * - Redistributions in binary form must reproduce the above copyright notice,
  12  *   this list of conditions and the following disclaimer in the documentation
  13  *   and/or other materials provided with the distribution.
  14  * - Neither the name of Sun Microsystems, Inc. nor the names of its
  15  *   contributors may be used to endorse or promote products derived
  16  *   from this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  19  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  22  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #if defined(LIBC_SCCS) && !defined(lint)
  32 static char *sccsid2 = "@(#)rpc_callmsg.c 1.4 87/08/11 Copyr 1984 Sun Micro";
  33 static char *sccsid = "@(#)rpc_callmsg.c        2.1 88/07/29 4.0 RPCSRC";
  34 #endif
  35 #include <sys/cdefs.h>
  36 __FBSDID("$FreeBSD$");
  37
  38 /*
  39  * rpc_callmsg.c
  40  *
  41  * Copyright (C) 1984, Sun Microsystems, Inc.
  42  *
  43  */
  44
  45 #include "namespace.h"
  46 #include <assert.h>
  47 #include <stdlib.h>
  48 #include <string.h>
  49
  50 #include <rpc/rpc.h>
  51 #include "un-namespace.h"
  52
  53 /*
  54  * XDR a call message
  55  */
  56 bool_t
  57 xdr_callmsg(XDR *xdrs, struct rpc_msg *cmsg)
  58 {
  59         enum msg_type *prm_direction;
  60         int32_t *buf;
  61         struct opaque_auth *oa;
  62
  63         assert(xdrs != NULL);
  64         assert(cmsg != NULL);
  65
  66         if (xdrs->x_op == XDR_ENCODE) {
  67                 if (cmsg->rm_call.cb_cred.oa_length > MAX_AUTH_BYTES) {
  68                         return (FALSE);
  69                 }
  70                 if (cmsg->rm_call.cb_verf.oa_length > MAX_AUTH_BYTES) {
  71                         return (FALSE);
  72                 }
  73                 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT
  74                         + RNDUP(cmsg->rm_call.cb_cred.oa_length)
  75                         + 2 * BYTES_PER_XDR_UNIT
  76                         + RNDUP(cmsg->rm_call.cb_verf.oa_length));
  77                 if (buf != NULL) {
  78                         IXDR_PUT_INT32(buf, cmsg->rm_xid);
  79                         IXDR_PUT_ENUM(buf, cmsg->rm_direction);
  80                         if (cmsg->rm_direction != CALL) {
  81                                 return (FALSE);
  82                         }
  83                         IXDR_PUT_INT32(buf, cmsg->rm_call.cb_rpcvers);
  84                         if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
  85                                 return (FALSE);
  86                         }
  87                         IXDR_PUT_INT32(buf, cmsg->rm_call.cb_prog);
  88                         IXDR_PUT_INT32(buf, cmsg->rm_call.cb_vers);
  89                         IXDR_PUT_INT32(buf, cmsg->rm_call.cb_proc);
  90                         oa = &cmsg->rm_call.cb_cred;
  91                         IXDR_PUT_ENUM(buf, oa->oa_flavor);
  92                         IXDR_PUT_INT32(buf, oa->oa_length);
  93                         if (oa->oa_length) {
  94                                 memmove(buf, oa->oa_base, oa->oa_length);
  95                                 buf += RNDUP(oa->oa_length) / sizeof (int32_t);
  96                         }
  97                         oa = &cmsg->rm_call.cb_verf;
  98                         IXDR_PUT_ENUM(buf, oa->oa_flavor);
  99                         IXDR_PUT_INT32(buf, oa->oa_length);
 100                         if (oa->oa_length) {
 101                                 memmove(buf, oa->oa_base, oa->oa_length);
 102                                 /* no real need....
 103                                 buf += RNDUP(oa->oa_length) / sizeof (int32_t);
 104                                 */
 105                         }
 106                         return (TRUE);
 107                 }
 108         }
 109         if (xdrs->x_op == XDR_DECODE) {
 110                 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT);
 111                 if (buf != NULL) {
 112                         cmsg->rm_xid = IXDR_GET_U_INT32(buf);
 113                         cmsg->rm_direction = IXDR_GET_ENUM(buf, enum msg_type);
 114                         if (cmsg->rm_direction != CALL) {
 115                                 return (FALSE);
 116                         }
 117                         cmsg->rm_call.cb_rpcvers = IXDR_GET_U_INT32(buf);
 118                         if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
 119                                 return (FALSE);
 120                         }
 121                         cmsg->rm_call.cb_prog = IXDR_GET_U_INT32(buf);
 122                         cmsg->rm_call.cb_vers = IXDR_GET_U_INT32(buf);
 123                         cmsg->rm_call.cb_proc = IXDR_GET_U_INT32(buf);
 124                         oa = &cmsg->rm_call.cb_cred;
 125                         oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
 126                         oa->oa_length = (u_int)IXDR_GET_U_INT32(buf);
 127                         if (oa->oa_length) {
 128                                 if (oa->oa_length > MAX_AUTH_BYTES) {
 129                                         return (FALSE);
 130                                 }
 131                                 if (oa->oa_base == NULL) {
 132                                         oa->oa_base = (caddr_t)
 133                                             mem_alloc(oa->oa_length);
 134                                         if (oa->oa_base == NULL)
 135                                                 return (FALSE);
 136                                 }
 137                                 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
 138                                 if (buf == NULL) {
 139                                         if (xdr_opaque(xdrs, oa->oa_base,
 140                                             oa->oa_length) == FALSE) {
 141                                                 return (FALSE);
 142                                         }
 143                                 } else {
 144                                         memmove(oa->oa_base, buf,
 145                                             oa->oa_length);
 146                                         /* no real need....
 147                                         buf += RNDUP(oa->oa_length) /
 148                                                 sizeof (int32_t);
 149                                         */
 150                                 }
 151                         }
 152                         oa = &cmsg->rm_call.cb_verf;
 153                         buf = XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT);
 154                         if (buf == NULL) {
 155                                 if (xdr_enum(xdrs, &oa->oa_flavor) == FALSE ||
 156                                     xdr_u_int(xdrs, &oa->oa_length) == FALSE) {
 157                                         return (FALSE);
 158                                 }
 159                         } else {
 160                                 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
 161                                 oa->oa_length = (u_int)IXDR_GET_U_INT32(buf);
 162                         }
 163                         if (oa->oa_length) {
 164                                 if (oa->oa_length > MAX_AUTH_BYTES) {
 165                                         return (FALSE);
 166                                 }
 167                                 if (oa->oa_base == NULL) {
 168                                         oa->oa_base = (caddr_t)
 169                                             mem_alloc(oa->oa_length);
 170                                         if (oa->oa_base == NULL)
 171                                                 return (FALSE);
 172                                 }
 173                                 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
 174                                 if (buf == NULL) {
 175                                         if (xdr_opaque(xdrs, oa->oa_base,
 176                                             oa->oa_length) == FALSE) {
 177                                                 return (FALSE);
 178                                         }
 179                                 } else {
 180                                         memmove(oa->oa_base, buf,
 181                                             oa->oa_length);
 182                                         /* no real need...
 183                                         buf += RNDUP(oa->oa_length) /
 184                                                 sizeof (int32_t);
 185                                         */
 186                                 }
 187                         }
 188                         return (TRUE);
 189                 }
 190         }
 191         prm_direction = &cmsg->rm_direction;
 192         if (
 193             xdr_u_int32_t(xdrs, &(cmsg->rm_xid)) &&
 194             xdr_enum(xdrs, (enum_t *) prm_direction) &&
 195             (cmsg->rm_direction == CALL) &&
 196             xdr_rpcvers(xdrs, &(cmsg->rm_call.cb_rpcvers)) &&
 197             (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) &&
 198             xdr_rpcprog(xdrs, &(cmsg->rm_call.cb_prog)) &&
 199             xdr_rpcvers(xdrs, &(cmsg->rm_call.cb_vers)) &&
 200             xdr_rpcproc(xdrs, &(cmsg->rm_call.cb_proc)) &&
 201             xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_cred)) )
 202                 return (xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_verf)));
 203         return (FALSE);
 204 }