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NetBSD/lib/libc/rpc/rpc_prot.c
jtc 43fa6fe319 If port provides __weak_alias(), provide an Standard C and POSIX pure 
identifier namespace by renaming non standard functions and variables
such that they have a leading underscore.  The library will use those
names internally.  Weak aliases are used to provide the original names
to the API.

This is only the first part of this change.  It is most of the functions
which are implemented in C for all NetBSD ports.  Subsequent changes are
to add the same support to the remaining C files, to assembly files, and
to the automagically generated assembly source used for system calls.
When all of the above is done, ports with weak alias support should add
a definition for __weak_alias to <sys/cdefs.h>.
1997-07-21 14:06:24 +00:00

332 lines
8.1 KiB
C
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/* $NetBSD: rpc_prot.c,v 1.5 1997/07/21 14:08:36 jtc Exp $ */
/*
* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
* unrestricted use provided that this legend is included on all tape
* media and as a part of the software program in whole or part. Users
* may copy or modify Sun RPC without charge, but are not authorized
* to license or distribute it to anyone else except as part of a product or
* program developed by the user.
*
* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
*
* Sun RPC is provided with no support and without any obligation on the
* part of Sun Microsystems, Inc. to assist in its use, correction,
* modification or enhancement.
*
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
* OR ANY PART THEREOF.
*
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
* or profits or other special, indirect and consequential damages, even if
* Sun has been advised of the possibility of such damages.
*
* Sun Microsystems, Inc.
* 2550 Garcia Avenue
* Mountain View, California 94043
*/
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
#if 0
static char *sccsid = "@(#)rpc_prot.c 1.36 87/08/11 Copyr 1984 Sun Micro";
static char *sccsid = "@(#)rpc_prot.c 2.3 88/08/07 4.0 RPCSRC";
#else
__RCSID("$NetBSD: rpc_prot.c,v 1.5 1997/07/21 14:08:36 jtc Exp $");
#endif
#endif
/*
* rpc_prot.c
*
* Copyright (C) 1984, Sun Microsystems, Inc.
*
* This set of routines implements the rpc message definition,
* its serializer and some common rpc utility routines.
* The routines are meant for various implementations of rpc -
* they are NOT for the rpc client or rpc service implementations!
* Because authentication stuff is easy and is part of rpc, the opaque
* routines are also in this program.
*/
#include "namespace.h"
#include <sys/param.h>
#include <rpc/rpc.h>
#ifdef __weak_alias
__weak_alias(xdr_accepted_reply,_xdr_accepted_reply);
__weak_alias(xdr_callhdr,_xdr_callhdr);
__weak_alias(xdr_des_block,_xdr_des_block);
__weak_alias(xdr_opaque_auth,_xdr_opaque_auth);
__weak_alias(xdr_rejected_reply,_xdr_rejected_reply);
__weak_alias(xdr_replymsg,_xdr_replymsg);
#endif
static void accepted __P((enum accept_stat, struct rpc_err *));
static void rejected __P((enum reject_stat, struct rpc_err *));
/* * * * * * * * * * * * * * XDR Authentication * * * * * * * * * * * */
struct opaque_auth _null_auth;
/*
* XDR an opaque authentication struct
* (see auth.h)
*/
bool_t
xdr_opaque_auth(xdrs, ap)
register XDR *xdrs;
register struct opaque_auth *ap;
{
if (xdr_enum(xdrs, &(ap->oa_flavor)))
return (xdr_bytes(xdrs, &ap->oa_base,
&ap->oa_length, MAX_AUTH_BYTES));
return (FALSE);
}
/*
* XDR a DES block
*/
bool_t
xdr_des_block(xdrs, blkp)
register XDR *xdrs;
register des_block *blkp;
{
return (xdr_opaque(xdrs, (caddr_t)blkp, sizeof(des_block)));
}
/* * * * * * * * * * * * * * XDR RPC MESSAGE * * * * * * * * * * * * * * * */
/*
* XDR the MSG_ACCEPTED part of a reply message union
*/
bool_t
xdr_accepted_reply(xdrs, ar)
register XDR *xdrs;
register struct accepted_reply *ar;
{
/* personalized union, rather than calling xdr_union */
if (! xdr_opaque_auth(xdrs, &(ar->ar_verf)))
return (FALSE);
if (! xdr_enum(xdrs, (enum_t *)&(ar->ar_stat)))
return (FALSE);
switch (ar->ar_stat) {
case SUCCESS:
return ((*(ar->ar_results.proc))(xdrs, ar->ar_results.where));
case PROG_MISMATCH:
if (! xdr_u_int32_t(xdrs, &(ar->ar_vers.low)))
return (FALSE);
return (xdr_u_int32_t(xdrs, &(ar->ar_vers.high)));
case GARBAGE_ARGS:
case SYSTEM_ERR:
case PROC_UNAVAIL:
case PROG_UNAVAIL:
break;
}
return (TRUE); /* TRUE => open ended set of problems */
}
/*
* XDR the MSG_DENIED part of a reply message union
*/
bool_t
xdr_rejected_reply(xdrs, rr)
register XDR *xdrs;
register struct rejected_reply *rr;
{
/* personalized union, rather than calling xdr_union */
if (! xdr_enum(xdrs, (enum_t *)&(rr->rj_stat)))
return (FALSE);
switch (rr->rj_stat) {
case RPC_MISMATCH:
if (! xdr_u_int32_t(xdrs, &(rr->rj_vers.low)))
return (FALSE);
return (xdr_u_int32_t(xdrs, &(rr->rj_vers.high)));
case AUTH_ERROR:
return (xdr_enum(xdrs, (enum_t *)&(rr->rj_why)));
}
return (FALSE);
}
static struct xdr_discrim reply_dscrm[3] = {
{ (int)MSG_ACCEPTED, xdr_accepted_reply },
{ (int)MSG_DENIED, xdr_rejected_reply },
{ __dontcare__, NULL_xdrproc_t } };
/*
* XDR a reply message
*/
bool_t
xdr_replymsg(xdrs, rmsg)
register XDR *xdrs;
register struct rpc_msg *rmsg;
{
if (
xdr_u_int32_t(xdrs, &(rmsg->rm_xid)) &&
xdr_enum(xdrs, (enum_t *)&(rmsg->rm_direction)) &&
(rmsg->rm_direction == REPLY) )
return (xdr_union(xdrs, (enum_t *)&(rmsg->rm_reply.rp_stat),
(caddr_t)&(rmsg->rm_reply.ru), reply_dscrm, NULL_xdrproc_t));
return (FALSE);
}
/*
* Serializes the "static part" of a call message header.
* The fields include: rm_xid, rm_direction, rpcvers, prog, and vers.
* The rm_xid is not really static, but the user can easily munge on the fly.
*/
bool_t
xdr_callhdr(xdrs, cmsg)
register XDR *xdrs;
register struct rpc_msg *cmsg;
{
cmsg->rm_direction = CALL;
cmsg->rm_call.cb_rpcvers = RPC_MSG_VERSION;
if (
(xdrs->x_op == XDR_ENCODE) &&
xdr_u_int32_t(xdrs, &(cmsg->rm_xid)) &&
xdr_enum(xdrs, (enum_t *)&(cmsg->rm_direction)) &&
xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_rpcvers)) &&
xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_prog)) )
return (xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_vers)));
return (FALSE);
}
/* ************************** Client utility routine ************* */
static void
accepted(acpt_stat, error)
register enum accept_stat acpt_stat;
register struct rpc_err *error;
{
switch (acpt_stat) {
case PROG_UNAVAIL:
error->re_status = RPC_PROGUNAVAIL;
return;
case PROG_MISMATCH:
error->re_status = RPC_PROGVERSMISMATCH;
return;
case PROC_UNAVAIL:
error->re_status = RPC_PROCUNAVAIL;
return;
case GARBAGE_ARGS:
error->re_status = RPC_CANTDECODEARGS;
return;
case SYSTEM_ERR:
error->re_status = RPC_SYSTEMERROR;
return;
case SUCCESS:
error->re_status = RPC_SUCCESS;
return;
}
/* something's wrong, but we don't know what ... */
error->re_status = RPC_FAILED;
error->re_lb.s1 = (long)MSG_ACCEPTED;
error->re_lb.s2 = (long)acpt_stat;
}
static void
rejected(rjct_stat, error)
register enum reject_stat rjct_stat;
register struct rpc_err *error;
{
switch (rjct_stat) {
case RPC_MISMATCH:
error->re_status = RPC_VERSMISMATCH;
return;
case AUTH_ERROR:
error->re_status = RPC_AUTHERROR;
return;
}
/* something's wrong, but we don't know what ... */
error->re_status = RPC_FAILED;
error->re_lb.s1 = (long)MSG_DENIED;
error->re_lb.s2 = (long)rjct_stat;
}
/*
* given a reply message, fills in the error
*/
void
_seterr_reply(msg, error)
register struct rpc_msg *msg;
register struct rpc_err *error;
{
/* optimized for normal, SUCCESSful case */
switch (msg->rm_reply.rp_stat) {
case MSG_ACCEPTED:
if (msg->acpted_rply.ar_stat == SUCCESS) {
error->re_status = RPC_SUCCESS;
return;
};
accepted(msg->acpted_rply.ar_stat, error);
break;
case MSG_DENIED:
rejected(msg->rjcted_rply.rj_stat, error);
break;
default:
error->re_status = RPC_FAILED;
error->re_lb.s1 = (long)(msg->rm_reply.rp_stat);
break;
}
switch (error->re_status) {
case RPC_VERSMISMATCH:
error->re_vers.low = msg->rjcted_rply.rj_vers.low;
error->re_vers.high = msg->rjcted_rply.rj_vers.high;
break;
case RPC_AUTHERROR:
error->re_why = msg->rjcted_rply.rj_why;
break;
case RPC_PROGVERSMISMATCH:
error->re_vers.low = msg->acpted_rply.ar_vers.low;
error->re_vers.high = msg->acpted_rply.ar_vers.high;
break;
case RPC_FAILED:
case RPC_SUCCESS:
case RPC_PROGNOTREGISTERED:
case RPC_PMAPFAILURE:
case RPC_UNKNOWNPROTO:
case RPC_UNKNOWNHOST:
case RPC_SYSTEMERROR:
case RPC_CANTDECODEARGS:
case RPC_PROCUNAVAIL:
case RPC_PROGUNAVAIL:
case RPC_TIMEDOUT:
case RPC_CANTRECV:
case RPC_CANTSEND:
case RPC_CANTDECODERES:
case RPC_CANTENCODEARGS:
break;
}
}
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