lib/libc/rpc/rpc_callmsg.c

   1 /*      $NetBSD: rpc_callmsg.c,v 1.18 2008/04/25 17:44:44 christos 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 #include <sys/cdefs.h>
  33 #if defined(LIBC_SCCS) && !defined(lint)
  34 #if 0
  35 static char *sccsid = "@(#)rpc_callmsg.c 1.4 87/08/11 Copyr 1984 Sun Micro";
  36 static char *sccsid = "@(#)rpc_callmsg.c        2.1 88/07/29 4.0 RPCSRC";
  37 #else
  38 __RCSID("$NetBSD: rpc_callmsg.c,v 1.18 2008/04/25 17:44:44 christos Exp $");
  39 #endif
  40 #endif
  41
  42 /*
  43  * rpc_callmsg.c
  44  *
  45  * Copyright (C) 1984, Sun Microsystems, Inc.
  46  *
  47  */
  48
  49 #include "namespace.h"
  50
  51 #include <sys/param.h>
  52
  53 #include <assert.h>
  54 #include <stdlib.h>
  55 #include <string.h>
  56
  57 #include <rpc/rpc.h>
  58
  59 #ifdef __weak_alias
  60 __weak_alias(xdr_callmsg,_xdr_callmsg)
  61 #endif
  62
  63 /*
  64  * XDR a call message
  65  */
  66 bool_t
  67 xdr_callmsg(xdrs, cmsg)
  68         XDR *xdrs;
  69         struct rpc_msg *cmsg;
  70 {
  71         int32_t *buf;
  72         struct opaque_auth *oa;
  73
  74         _DIAGASSERT(xdrs != NULL);
  75         _DIAGASSERT(cmsg != NULL);
  76
  77         if (xdrs->x_op == XDR_ENCODE) {
  78                 if (cmsg->rm_call.cb_cred.oa_length > MAX_AUTH_BYTES) {
  79                         return (FALSE);
  80                 }
  81                 if (cmsg->rm_call.cb_verf.oa_length > MAX_AUTH_BYTES) {
  82                         return (FALSE);
  83                 }
  84                 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT
  85                         + RNDUP(cmsg->rm_call.cb_cred.oa_length)
  86                         + 2 * BYTES_PER_XDR_UNIT
  87                         + RNDUP(cmsg->rm_call.cb_verf.oa_length));
  88                 if (buf != NULL) {
  89                         IXDR_PUT_INT32(buf, cmsg->rm_xid);
  90                         IXDR_PUT_ENUM(buf, cmsg->rm_direction);
  91                         if (cmsg->rm_direction != CALL) {
  92                                 return (FALSE);
  93                         }
  94                         IXDR_PUT_INT32(buf, cmsg->rm_call.cb_rpcvers);
  95                         if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
  96                                 return (FALSE);
  97                         }
  98                         IXDR_PUT_INT32(buf, cmsg->rm_call.cb_prog);
  99                         IXDR_PUT_INT32(buf, cmsg->rm_call.cb_vers);
 100                         IXDR_PUT_INT32(buf, cmsg->rm_call.cb_proc);
 101                         oa = &cmsg->rm_call.cb_cred;
 102                         IXDR_PUT_ENUM(buf, oa->oa_flavor);
 103                         IXDR_PUT_INT32(buf, oa->oa_length);
 104                         if (oa->oa_length) {
 105                                 memmove(buf, oa->oa_base, oa->oa_length);
 106                                 buf += RNDUP(oa->oa_length) / sizeof (int32_t);
 107                         }
 108                         oa = &cmsg->rm_call.cb_verf;
 109                         IXDR_PUT_ENUM(buf, oa->oa_flavor);
 110                         IXDR_PUT_INT32(buf, oa->oa_length);
 111                         if (oa->oa_length) {
 112                                 memmove(buf, oa->oa_base, oa->oa_length);
 113                                 /* no real need....
 114                                 buf += RNDUP(oa->oa_length) / sizeof (int32_t);
 115                                 */
 116                         }
 117                         return (TRUE);
 118                 }
 119         }
 120         if (xdrs->x_op == XDR_DECODE) {
 121                 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT);
 122                 if (buf != NULL) {
 123                         cmsg->rm_xid = IXDR_GET_U_INT32(buf);
 124                         cmsg->rm_direction = IXDR_GET_ENUM(buf, enum msg_type);
 125                         if (cmsg->rm_direction != CALL) {
 126                                 return (FALSE);
 127                         }
 128                         cmsg->rm_call.cb_rpcvers = IXDR_GET_U_INT32(buf);
 129                         if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
 130                                 return (FALSE);
 131                         }
 132                         cmsg->rm_call.cb_prog = IXDR_GET_U_INT32(buf);
 133                         cmsg->rm_call.cb_vers = IXDR_GET_U_INT32(buf);
 134                         cmsg->rm_call.cb_proc = IXDR_GET_U_INT32(buf);
 135                         oa = &cmsg->rm_call.cb_cred;
 136                         oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
 137                         oa->oa_length = (u_int)IXDR_GET_U_INT32(buf);
 138                         if (oa->oa_length) {
 139                                 if (oa->oa_length > MAX_AUTH_BYTES) {
 140                                         return (FALSE);
 141                                 }
 142                                 if (oa->oa_base == NULL) {
 143                                         oa->oa_base = mem_alloc(oa->oa_length);
 144                                         if (oa->oa_base == NULL)
 145                                                 return (FALSE);
 146                                 }
 147                                 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
 148                                 if (buf == NULL) {
 149                                         if (xdr_opaque(xdrs, oa->oa_base,
 150                                             oa->oa_length) == FALSE) {
 151                                                 return (FALSE);
 152                                         }
 153                                 } else {
 154                                         memmove(oa->oa_base, buf,
 155                                             oa->oa_length);
 156                                         /* no real need....
 157                                         buf += RNDUP(oa->oa_length) /
 158                                                 sizeof (int32_t);
 159                                         */
 160                                 }
 161                         }
 162                         oa = &cmsg->rm_call.cb_verf;
 163                         buf = XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT);
 164                         if (buf == NULL) {
 165                                 if (xdr_enum(xdrs, &oa->oa_flavor) == FALSE ||
 166                                     xdr_u_int(xdrs, &oa->oa_length) == FALSE) {
 167                                         return (FALSE);
 168                                 }
 169                         } else {
 170                                 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
 171                                 oa->oa_length = (u_int)IXDR_GET_U_INT32(buf);
 172                         }
 173                         if (oa->oa_length) {
 174                                 if (oa->oa_length > MAX_AUTH_BYTES) {
 175                                         return (FALSE);
 176                                 }
 177                                 if (oa->oa_base == NULL) {
 178                                         oa->oa_base = mem_alloc(oa->oa_length);
 179                                         if (oa->oa_base == NULL)
 180                                                 return (FALSE);
 181                                 }
 182                                 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
 183                                 if (buf == NULL) {
 184                                         if (xdr_opaque(xdrs, oa->oa_base,
 185                                             oa->oa_length) == FALSE) {
 186                                                 return (FALSE);
 187                                         }
 188                                 } else {
 189                                         memmove(oa->oa_base, buf,
 190                                             oa->oa_length);
 191                                         /* no real need...
 192                                         buf += RNDUP(oa->oa_length) /
 193                                                 sizeof (int32_t);
 194                                         */
 195                                 }
 196                         }
 197                         return (TRUE);
 198                 }
 199         }
 200         if (
 201             xdr_u_int32_t(xdrs, &(cmsg->rm_xid)) &&
 202             xdr_enum(xdrs, (enum_t *)(void *)&(cmsg->rm_direction)) &&
 203             (cmsg->rm_direction == CALL) &&
 204             xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_rpcvers)) &&
 205             (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) &&
 206             xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_prog)) &&
 207             xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_vers)) &&
 208             xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_proc)) &&
 209             xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_cred)) )
 210                 return (xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_verf)));
 211         return (FALSE);
 212 }