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  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
   5  * unrestricted use provided that this legend is included on all tape
   6  * media and as a part of the software program in whole or part.  Users
   7  * may copy or modify Sun RPC without charge, but are not authorized
   8  * to license or distribute it to anyone else except as part of a product or
   9  * program developed by the user.
  10  *
  11  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  12  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  13  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  14  *
  15  * Sun RPC is provided with no support and without any obligation on the
  16  * part of Sun Microsystems, Inc. to assist in its use, correction,
  17  * modification or enhancement.
  18  *
  19  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  20  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  21  * OR ANY PART THEREOF.
  22  *
  23  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  24  * or profits or other special, indirect and consequential damages, even if
  25  * Sun has been advised of the possibility of such damages.
  26  *
  27  * Sun Microsystems, Inc.
  28  * 2550 Garcia Avenue
  29  * Mountain View, California  94043
  30  */
  31
  32 #if defined(LIBC_SCCS) && !defined(lint)
  33 static char *sccsid2 = "@(#)rpc_callmsg.c 1.4 87/08/11 Copyr 1984 Sun Micro";
  34 static char *sccsid = "@(#)rpc_callmsg.c        2.1 88/07/29 4.0 RPCSRC";
  35 #endif
  36 #include <sys/cdefs.h>
  37 __FBSDID("$FreeBSD$");
  38
  39 /*
  40  * rpc_callmsg.c
  41  *
  42  * Copyright (C) 1984, Sun Microsystems, Inc.
  43  *
  44  */
  45
  46 #include "namespace.h"
  47 #include <assert.h>
  48 #include <stdlib.h>
  49 #include <string.h>
  50
  51 #include <rpc/rpc.h>
  52 #include "un-namespace.h"
  53
  54 /*
  55  * XDR a call message
  56  */
  57 bool_t
  58 xdr_callmsg(xdrs, cmsg)
  59         XDR *xdrs;
  60         struct rpc_msg *cmsg;
  61 {
  62         int32_t *buf;
  63         struct opaque_auth *oa;
  64
  65         assert(xdrs != NULL);
  66         assert(cmsg != NULL);
  67
  68         if (xdrs->x_op == XDR_ENCODE) {
  69                 if (cmsg->rm_call.cb_cred.oa_length > MAX_AUTH_BYTES) {
  70                         return (FALSE);
  71                 }
  72                 if (cmsg->rm_call.cb_verf.oa_length > MAX_AUTH_BYTES) {
  73                         return (FALSE);
  74                 }
  75                 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT
  76                         + RNDUP(cmsg->rm_call.cb_cred.oa_length)
  77                         + 2 * BYTES_PER_XDR_UNIT
  78                         + RNDUP(cmsg->rm_call.cb_verf.oa_length));
  79                 if (buf != NULL) {
  80                         IXDR_PUT_INT32(buf, cmsg->rm_xid);
  81                         IXDR_PUT_ENUM(buf, cmsg->rm_direction);
  82                         if (cmsg->rm_direction != CALL) {
  83                                 return (FALSE);
  84                         }
  85                         IXDR_PUT_INT32(buf, cmsg->rm_call.cb_rpcvers);
  86                         if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
  87                                 return (FALSE);
  88                         }
  89                         IXDR_PUT_INT32(buf, cmsg->rm_call.cb_prog);
  90                         IXDR_PUT_INT32(buf, cmsg->rm_call.cb_vers);
  91                         IXDR_PUT_INT32(buf, cmsg->rm_call.cb_proc);
  92                         oa = &cmsg->rm_call.cb_cred;
  93                         IXDR_PUT_ENUM(buf, oa->oa_flavor);
  94                         IXDR_PUT_INT32(buf, oa->oa_length);
  95                         if (oa->oa_length) {
  96                                 memmove(buf, oa->oa_base, oa->oa_length);
  97                                 buf += RNDUP(oa->oa_length) / sizeof (int32_t);
  98                         }
  99                         oa = &cmsg->rm_call.cb_verf;
 100                         IXDR_PUT_ENUM(buf, oa->oa_flavor);
 101                         IXDR_PUT_INT32(buf, oa->oa_length);
 102                         if (oa->oa_length) {
 103                                 memmove(buf, oa->oa_base, oa->oa_length);
 104                                 /* no real need....
 105                                 buf += RNDUP(oa->oa_length) / sizeof (int32_t);
 106                                 */
 107                         }
 108                         return (TRUE);
 109                 }
 110         }
 111         if (xdrs->x_op == XDR_DECODE) {
 112                 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT);
 113                 if (buf != NULL) {
 114                         cmsg->rm_xid = IXDR_GET_U_INT32(buf);
 115                         cmsg->rm_direction = IXDR_GET_ENUM(buf, enum msg_type);
 116                         if (cmsg->rm_direction != CALL) {
 117                                 return (FALSE);
 118                         }
 119                         cmsg->rm_call.cb_rpcvers = IXDR_GET_U_INT32(buf);
 120                         if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
 121                                 return (FALSE);
 122                         }
 123                         cmsg->rm_call.cb_prog = IXDR_GET_U_INT32(buf);
 124                         cmsg->rm_call.cb_vers = IXDR_GET_U_INT32(buf);
 125                         cmsg->rm_call.cb_proc = IXDR_GET_U_INT32(buf);
 126                         oa = &cmsg->rm_call.cb_cred;
 127                         oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
 128                         oa->oa_length = (u_int)IXDR_GET_U_INT32(buf);
 129                         if (oa->oa_length) {
 130                                 if (oa->oa_length > MAX_AUTH_BYTES) {
 131                                         return (FALSE);
 132                                 }
 133                                 if (oa->oa_base == NULL) {
 134                                         oa->oa_base = (caddr_t)
 135                                             mem_alloc(oa->oa_length);
 136                                         if (oa->oa_base == NULL)
 137                                                 return (FALSE);
 138                                 }
 139                                 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
 140                                 if (buf == NULL) {
 141                                         if (xdr_opaque(xdrs, oa->oa_base,
 142                                             oa->oa_length) == FALSE) {
 143                                                 return (FALSE);
 144                                         }
 145                                 } else {
 146                                         memmove(oa->oa_base, buf,
 147                                             oa->oa_length);
 148                                         /* no real need....
 149                                         buf += RNDUP(oa->oa_length) /
 150                                                 sizeof (int32_t);
 151                                         */
 152                                 }
 153                         }
 154                         oa = &cmsg->rm_call.cb_verf;
 155                         buf = XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT);
 156                         if (buf == NULL) {
 157                                 if (xdr_enum(xdrs, &oa->oa_flavor) == FALSE ||
 158                                     xdr_u_int(xdrs, &oa->oa_length) == FALSE) {
 159                                         return (FALSE);
 160                                 }
 161                         } else {
 162                                 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
 163                                 oa->oa_length = (u_int)IXDR_GET_U_INT32(buf);
 164                         }
 165                         if (oa->oa_length) {
 166                                 if (oa->oa_length > MAX_AUTH_BYTES) {
 167                                         return (FALSE);
 168                                 }
 169                                 if (oa->oa_base == NULL) {
 170                                         oa->oa_base = (caddr_t)
 171                                             mem_alloc(oa->oa_length);
 172                                         if (oa->oa_base == NULL)
 173                                                 return (FALSE);
 174                                 }
 175                                 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
 176                                 if (buf == NULL) {
 177                                         if (xdr_opaque(xdrs, oa->oa_base,
 178                                             oa->oa_length) == FALSE) {
 179                                                 return (FALSE);
 180                                         }
 181                                 } else {
 182                                         memmove(oa->oa_base, buf,
 183                                             oa->oa_length);
 184                                         /* no real need...
 185                                         buf += RNDUP(oa->oa_length) /
 186                                                 sizeof (int32_t);
 187                                         */
 188                                 }
 189                         }
 190                         return (TRUE);
 191                 }
 192         }
 193         if (
 194             xdr_u_int32_t(xdrs, &(cmsg->rm_xid)) &&
 195             xdr_enum(xdrs, (enum_t *)&(cmsg->rm_direction)) &&
 196             (cmsg->rm_direction == CALL) &&
 197             xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_rpcvers)) &&
 198             (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) &&
 199             xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_prog)) &&
 200             xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_vers)) &&
 201             xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_proc)) &&
 202             xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_cred)) )
 203                 return (xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_verf)));
 204         return (FALSE);
 205 }