lib/libcr/rpc/rpc_callmsg.c

   1 /*
   2  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
   3  * unrestricted use provided that this legend is included on all tape
   4  * media and as a part of the software program in whole or part.  Users
   5  * may copy or modify Sun RPC without charge, but are not authorized
   6  * to license or distribute it to anyone else except as part of a product or
   7  * program developed by the user.
   8  *
   9  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  10  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  11  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  12  *
  13  * Sun RPC is provided with no support and without any obligation on the
  14  * part of Sun Microsystems, Inc. to assist in its use, correction,
  15  * modification or enhancement.
  16  *
  17  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  18  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  19  * OR ANY PART THEREOF.
  20  *
  21  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  22  * or profits or other special, indirect and consequential damages, even if
  23  * Sun has been advised of the possibility of such damages.
  24  *
  25  * Sun Microsystems, Inc.
  26  * 2550 Garcia Avenue
  27  * Mountain View, California  94043
  28  *
  29  * @(#)rpc_callmsg.c 1.4 87/08/11 Copyr 1984 Sun Micro
  30  * @(#)rpc_callmsg.c    2.1 88/07/29 4.0 RPCSRC
  31  * $FreeBSD: src/lib/libc/rpc/rpc_callmsg.c,v 1.9 1999/08/28 00:00:45 peter Exp $
  32  * $DragonFly: src/lib/libcr/rpc/Attic/rpc_callmsg.c,v 1.3 2004/10/25 19:38:25 drhodus Exp $
  33  */
  34
  35 /*
  36  * rpc_callmsg.c
  37  *
  38  * Copyright (C) 1984, Sun Microsystems, Inc.
  39  *
  40  */
  41
  42 #include <sys/param.h>
  43 #include <stdlib.h>
  44 #include <string.h>
  45 #include <rpc/rpc.h>
  46
  47 /*
  48  * XDR a call message
  49  */
  50 bool_t
  51 xdr_callmsg(xdrs, cmsg)
  52         XDR *xdrs;
  53         struct rpc_msg *cmsg;
  54 {
  55         int32_t *buf;
  56         struct opaque_auth *oa;
  57
  58         if (xdrs->x_op == XDR_ENCODE) {
  59                 if (cmsg->rm_call.cb_cred.oa_length > MAX_AUTH_BYTES) {
  60                         return (FALSE);
  61                 }
  62                 if (cmsg->rm_call.cb_verf.oa_length > MAX_AUTH_BYTES) {
  63                         return (FALSE);
  64                 }
  65                 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT
  66                         + RNDUP(cmsg->rm_call.cb_cred.oa_length)
  67                         + 2 * BYTES_PER_XDR_UNIT
  68                         + RNDUP(cmsg->rm_call.cb_verf.oa_length));
  69                 if (buf != NULL) {
  70                         IXDR_PUT_LONG(buf, cmsg->rm_xid);
  71                         IXDR_PUT_ENUM(buf, cmsg->rm_direction);
  72                         if (cmsg->rm_direction != CALL) {
  73                                 return (FALSE);
  74                         }
  75                         IXDR_PUT_LONG(buf, cmsg->rm_call.cb_rpcvers);
  76                         if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
  77                                 return (FALSE);
  78                         }
  79                         IXDR_PUT_LONG(buf, cmsg->rm_call.cb_prog);
  80                         IXDR_PUT_LONG(buf, cmsg->rm_call.cb_vers);
  81                         IXDR_PUT_LONG(buf, cmsg->rm_call.cb_proc);
  82                         oa = &cmsg->rm_call.cb_cred;
  83                         IXDR_PUT_ENUM(buf, oa->oa_flavor);
  84                         IXDR_PUT_LONG(buf, oa->oa_length);
  85                         if (oa->oa_length) {
  86                                 memcpy((caddr_t)buf, oa->oa_base, oa->oa_length);
  87                                 buf += RNDUP(oa->oa_length) / sizeof (int32_t);
  88                         }
  89                         oa = &cmsg->rm_call.cb_verf;
  90                         IXDR_PUT_ENUM(buf, oa->oa_flavor);
  91                         IXDR_PUT_LONG(buf, oa->oa_length);
  92                         if (oa->oa_length) {
  93                                 memcpy((caddr_t)buf, oa->oa_base, oa->oa_length);
  94                                 /* no real need....
  95                                 buf += RNDUP(oa->oa_length) / sizeof (int32_t);
  96                                 */
  97                         }
  98                         return (TRUE);
  99                 }
 100         }
 101         if (xdrs->x_op == XDR_DECODE) {
 102                 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT);
 103                 if (buf != NULL) {
 104                         cmsg->rm_xid = IXDR_GET_LONG(buf);
 105                         cmsg->rm_direction = IXDR_GET_ENUM(buf, enum msg_type);
 106                         if (cmsg->rm_direction != CALL) {
 107                                 return (FALSE);
 108                         }
 109                         cmsg->rm_call.cb_rpcvers = IXDR_GET_LONG(buf);
 110                         if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
 111                                 return (FALSE);
 112                         }
 113                         cmsg->rm_call.cb_prog = IXDR_GET_LONG(buf);
 114                         cmsg->rm_call.cb_vers = IXDR_GET_LONG(buf);
 115                         cmsg->rm_call.cb_proc = IXDR_GET_LONG(buf);
 116                         oa = &cmsg->rm_call.cb_cred;
 117                         oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
 118                         oa->oa_length = IXDR_GET_LONG(buf);
 119                         if (oa->oa_length) {
 120                                 if (oa->oa_length > MAX_AUTH_BYTES) {
 121                                         return (FALSE);
 122                                 }
 123                                 if (oa->oa_base == NULL) {
 124                                         oa->oa_base = (caddr_t)
 125                                                 mem_alloc(oa->oa_length);
 126                                 }
 127                                 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
 128                                 if (buf == NULL) {
 129                                         if (xdr_opaque(xdrs, oa->oa_base,
 130                                             oa->oa_length) == FALSE) {
 131                                                 return (FALSE);
 132                                         }
 133                                 } else {
 134                                         memcpy(oa->oa_base, (caddr_t)buf,
 135                                             oa->oa_length);
 136                                         /* no real need....
 137                                         buf += RNDUP(oa->oa_length) /
 138                                                 sizeof (int32_t);
 139                                         */
 140                                 }
 141                         }
 142                         oa = &cmsg->rm_call.cb_verf;
 143                         buf = XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT);
 144                         if (buf == NULL) {
 145                                 if (xdr_enum(xdrs, &oa->oa_flavor) == FALSE ||
 146                                     xdr_u_int(xdrs, &oa->oa_length) == FALSE) {
 147                                         return (FALSE);
 148                                 }
 149                         } else {
 150                                 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
 151                                 oa->oa_length = IXDR_GET_LONG(buf);
 152                         }
 153                         if (oa->oa_length) {
 154                                 if (oa->oa_length > MAX_AUTH_BYTES) {
 155                                         return (FALSE);
 156                                 }
 157                                 if (oa->oa_base == NULL) {
 158                                         oa->oa_base = (caddr_t)
 159                                                 mem_alloc(oa->oa_length);
 160                                 }
 161                                 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
 162                                 if (buf == NULL) {
 163                                         if (xdr_opaque(xdrs, oa->oa_base,
 164                                             oa->oa_length) == FALSE) {
 165                                                 return (FALSE);
 166                                         }
 167                                 } else {
 168                                         memcpy(oa->oa_base, (caddr_t)buf,
 169                                             oa->oa_length);
 170                                         /* no real need...
 171                                         buf += RNDUP(oa->oa_length) /
 172                                                 sizeof (int32_t);
 173                                         */
 174                                 }
 175                         }
 176                         return (TRUE);
 177                 }
 178         }
 179         if (
 180             xdr_u_int32_t(xdrs, &(cmsg->rm_xid)) &&
 181             xdr_enum(xdrs, (enum_t *)&(cmsg->rm_direction)) &&
 182             (cmsg->rm_direction == CALL) &&
 183             xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_rpcvers)) &&
 184             (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) &&
 185             xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_prog)) &&
 186             xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_vers)) &&
 187             xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_proc)) &&
 188             xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_cred)) )
 189             return (xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_verf)));
 190         return (FALSE);
 191 }
 192