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minix/lib/libc/rpc/rpc_prot.c
Lionel Sambuc 84d9c625bf Synchronize on NetBSD-CVS (2013/12/1 12:00:00 UTC) 
- Fix for possible unset uid/gid in toproto
 - Fix for default mtree style
 - Update libelf
 - Importing libexecinfo
 - Resynchronize GCC, mpc, gmp, mpfr
 - build.sh: Replace params with show-params.
     This has been done as the make target has been renamed in the same
     way, while a new target named params has been added. This new
     target generates a file containing all the parameters, instead of
     printing it on the console.
 - Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
     get getservbyport() out of the inner loop

Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
2014-07-28 17:05:06 +02:00

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/* $NetBSD: rpc_prot.c,v 1.21 2013/03/11 20:19:29 tron Exp $ */
/*
* Copyright (c) 2010, Oracle America, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
* * Neither the name of the "Oracle America, Inc." nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#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 1.21 2013/03/11 20:19:29 tron 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 <assert.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(enum accept_stat, struct rpc_err *);
static void rejected(enum reject_stat, struct rpc_err *);
/* * * * * * * * * * * * * * XDR Authentication * * * * * * * * * * * */
/*
* XDR an opaque authentication struct
* (see auth.h)
*/
bool_t
xdr_opaque_auth(XDR *xdrs, struct opaque_auth *ap)
{
_DIAGASSERT(xdrs != NULL);
_DIAGASSERT(ap != NULL);
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(XDR *xdrs, des_block *blkp)
{
_DIAGASSERT(xdrs != NULL);
_DIAGASSERT(blkp != NULL);
return (xdr_opaque(xdrs, (caddr_t)(void *)blkp,
(u_int)sizeof(des_block)));
}
/* * * * * * * * * * * * * * XDR RPC MESSAGE * * * * * * * * * * * * * * * */
/*
* XDR the MSG_ACCEPTED part of a reply message union
*/
bool_t
xdr_accepted_reply(XDR *xdrs, struct accepted_reply *ar)
{
_DIAGASSERT(xdrs != NULL);
_DIAGASSERT(ar != NULL);
/* personalized union, rather than calling xdr_union */
if (! xdr_opaque_auth(xdrs, &(ar->ar_verf)))
return (FALSE);
if (! xdr_enum(xdrs, (enum_t *)(void *)&(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(XDR *xdrs, struct rejected_reply *rr)
{
_DIAGASSERT(xdrs != NULL);
_DIAGASSERT(rr != NULL);
/* personalized union, rather than calling xdr_union */
if (! xdr_enum(xdrs, (enum_t *)(void *)&(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 *)(void *)&(rr->rj_why)));
}
/* NOTREACHED */
return (FALSE);
}
static const struct xdr_discrim reply_dscrm[3] = {
{ (int)MSG_ACCEPTED, (xdrproc_t)xdr_accepted_reply },
{ (int)MSG_DENIED, (xdrproc_t)xdr_rejected_reply },
{ __dontcare__, NULL_xdrproc_t } };
/*
* XDR a reply message
*/
bool_t
xdr_replymsg(XDR *xdrs, struct rpc_msg *rmsg)
{
_DIAGASSERT(xdrs != NULL);
_DIAGASSERT(rmsg != NULL);
if (
xdr_u_int32_t(xdrs, &(rmsg->rm_xid)) &&
xdr_enum(xdrs, (enum_t *)(void *)&(rmsg->rm_direction)) &&
(rmsg->rm_direction == REPLY) )
return (xdr_union(xdrs, (enum_t *)(void *)&(rmsg->rm_reply.rp_stat),
(caddr_t)(void *)&(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(XDR *xdrs, struct rpc_msg *cmsg)
{
_DIAGASSERT(xdrs != NULL);
_DIAGASSERT(cmsg != NULL);
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 *)(void *)&(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(enum accept_stat acpt_stat, struct rpc_err *error)
{
_DIAGASSERT(error != NULL);
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;
}
/* NOTREACHED */
/* something's wrong, but we don't know what ... */
error->re_status = RPC_FAILED;
error->re_lb.s1 = (int32_t)MSG_ACCEPTED;
error->re_lb.s2 = (int32_t)acpt_stat;
}
static void
rejected(enum reject_stat rjct_stat, struct rpc_err *error)
{
_DIAGASSERT(error != NULL);
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 ... */
/* NOTREACHED */
error->re_status = RPC_FAILED;
error->re_lb.s1 = (int32_t)MSG_DENIED;
error->re_lb.s2 = (int32_t)rjct_stat;
}
/*
* given a reply message, fills in the error
*/
void
_seterr_reply(struct rpc_msg *msg, struct rpc_err *error)
{
_DIAGASSERT(msg != NULL);
_DIAGASSERT(error != NULL);
/* 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 = (int32_t)(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:
default:
break;
}
}
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