9e8ab1e622
This concludes tonight's entertainment. Once I'm sure I haven't destroyed the world with all these changes, I'll import the utilities. Everything should continue to work as before. If it doesn't let me know. Special thanks to Mark Murray for running a test 'make world' for me to shake out the bugs, which, hopefully, I have fixed. (And there was much rejoicing.)
298 lines
7.2 KiB
C
298 lines
7.2 KiB
C
/*
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* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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* unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify Sun RPC without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user.
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*
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* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
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*
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* Sun RPC is provided with no support and without any obligation on the
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* part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
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* OR ANY PART THEREOF.
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*
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* In no event will Sun Microsystems, Inc. be liable for any lost revenue
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* or profits or other special, indirect and consequential damages, even if
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* Sun has been advised of the possibility of such damages.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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/*static char *sccsid = "from: @(#)rpc_prot.c 1.36 87/08/11 Copyr 1984 Sun Micro";*/
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/*static char *sccsid = "from: @(#)rpc_prot.c 2.3 88/08/07 4.0 RPCSRC";*/
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static char *rcsid = "$Id: rpc_prot.c,v 1.4 1996/12/30 15:00:53 peter Exp $";
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#endif
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/*
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* rpc_prot.c
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*
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* Copyright (C) 1984, Sun Microsystems, Inc.
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*
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* This set of routines implements the rpc message definition,
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* its serializer and some common rpc utility routines.
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* The routines are meant for various implementations of rpc -
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* they are NOT for the rpc client or rpc service implementations!
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* Because authentication stuff is easy and is part of rpc, the opaque
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* routines are also in this program.
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*/
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#include <sys/param.h>
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#include <rpc/rpc.h>
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/* * * * * * * * * * * * * * XDR Authentication * * * * * * * * * * * */
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struct opaque_auth _null_auth;
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/*
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* XDR an opaque authentication struct
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* (see auth.h)
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*/
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bool_t
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xdr_opaque_auth(xdrs, ap)
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register XDR *xdrs;
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register struct opaque_auth *ap;
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{
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if (xdr_enum(xdrs, &(ap->oa_flavor)))
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return (xdr_bytes(xdrs, &ap->oa_base,
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&ap->oa_length, MAX_AUTH_BYTES));
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return (FALSE);
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}
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/*
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* XDR a DES block
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*/
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bool_t
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xdr_des_block(xdrs, blkp)
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register XDR *xdrs;
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register des_block *blkp;
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{
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return (xdr_opaque(xdrs, (caddr_t)blkp, sizeof(des_block)));
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}
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/* * * * * * * * * * * * * * XDR RPC MESSAGE * * * * * * * * * * * * * * * */
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/*
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* XDR the MSG_ACCEPTED part of a reply message union
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*/
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bool_t
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xdr_accepted_reply(xdrs, ar)
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register XDR *xdrs;
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register struct accepted_reply *ar;
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{
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/* personalized union, rather than calling xdr_union */
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if (! xdr_opaque_auth(xdrs, &(ar->ar_verf)))
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return (FALSE);
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if (! xdr_enum(xdrs, (enum_t *)&(ar->ar_stat)))
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return (FALSE);
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switch (ar->ar_stat) {
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case SUCCESS:
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return ((*(ar->ar_results.proc))(xdrs, ar->ar_results.where));
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case PROG_MISMATCH:
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if (! xdr_u_int32_t(xdrs, &(ar->ar_vers.low)))
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return (FALSE);
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return (xdr_u_int32_t(xdrs, &(ar->ar_vers.high)));
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default:
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break;
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}
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return (TRUE); /* TRUE => open ended set of problems */
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}
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/*
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* XDR the MSG_DENIED part of a reply message union
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*/
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bool_t
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xdr_rejected_reply(xdrs, rr)
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register XDR *xdrs;
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register struct rejected_reply *rr;
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{
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/* personalized union, rather than calling xdr_union */
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if (! xdr_enum(xdrs, (enum_t *)&(rr->rj_stat)))
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return (FALSE);
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switch (rr->rj_stat) {
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case RPC_MISMATCH:
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if (! xdr_u_int32_t(xdrs, &(rr->rj_vers.low)))
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return (FALSE);
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return (xdr_u_int32_t(xdrs, &(rr->rj_vers.high)));
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case AUTH_ERROR:
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return (xdr_enum(xdrs, (enum_t *)&(rr->rj_why)));
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}
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return (FALSE);
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}
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static struct xdr_discrim reply_dscrm[3] = {
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{ (int)MSG_ACCEPTED, xdr_accepted_reply },
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{ (int)MSG_DENIED, xdr_rejected_reply },
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{ __dontcare__, NULL_xdrproc_t } };
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/*
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* XDR a reply message
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*/
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bool_t
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xdr_replymsg(xdrs, rmsg)
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register XDR *xdrs;
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register struct rpc_msg *rmsg;
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{
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if (
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xdr_u_int32_t(xdrs, &(rmsg->rm_xid)) &&
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xdr_enum(xdrs, (enum_t *)&(rmsg->rm_direction)) &&
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(rmsg->rm_direction == REPLY) )
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return (xdr_union(xdrs, (enum_t *)&(rmsg->rm_reply.rp_stat),
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(caddr_t)&(rmsg->rm_reply.ru), reply_dscrm, NULL_xdrproc_t));
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return (FALSE);
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}
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/*
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* Serializes the "static part" of a call message header.
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* The fields include: rm_xid, rm_direction, rpcvers, prog, and vers.
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* The rm_xid is not really static, but the user can easily munge on the fly.
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*/
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bool_t
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xdr_callhdr(xdrs, cmsg)
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register XDR *xdrs;
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register struct rpc_msg *cmsg;
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{
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cmsg->rm_direction = CALL;
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cmsg->rm_call.cb_rpcvers = RPC_MSG_VERSION;
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if (
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(xdrs->x_op == XDR_ENCODE) &&
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xdr_u_int32_t(xdrs, &(cmsg->rm_xid)) &&
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xdr_enum(xdrs, (enum_t *)&(cmsg->rm_direction)) &&
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xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_rpcvers)) &&
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xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_prog)) )
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return (xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_vers)));
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return (FALSE);
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}
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/* ************************** Client utility routine ************* */
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static void
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accepted(acpt_stat, error)
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register enum accept_stat acpt_stat;
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register struct rpc_err *error;
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{
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switch (acpt_stat) {
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case PROG_UNAVAIL:
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error->re_status = RPC_PROGUNAVAIL;
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return;
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case PROG_MISMATCH:
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error->re_status = RPC_PROGVERSMISMATCH;
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return;
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case PROC_UNAVAIL:
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error->re_status = RPC_PROCUNAVAIL;
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return;
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case GARBAGE_ARGS:
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error->re_status = RPC_CANTDECODEARGS;
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return;
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case SYSTEM_ERR:
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error->re_status = RPC_SYSTEMERROR;
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return;
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case SUCCESS:
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error->re_status = RPC_SUCCESS;
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return;
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}
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/* something's wrong, but we don't know what ... */
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error->re_status = RPC_FAILED;
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error->re_lb.s1 = (long)MSG_ACCEPTED;
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error->re_lb.s2 = (long)acpt_stat;
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}
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static void
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rejected(rjct_stat, error)
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register enum reject_stat rjct_stat;
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register struct rpc_err *error;
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{
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switch (rjct_stat) {
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case RPC_VERSMISMATCH:
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error->re_status = RPC_VERSMISMATCH;
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return;
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case AUTH_ERROR:
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error->re_status = RPC_AUTHERROR;
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return;
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default:
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break;
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}
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/* something's wrong, but we don't know what ... */
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error->re_status = RPC_FAILED;
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error->re_lb.s1 = (long)MSG_DENIED;
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error->re_lb.s2 = (long)rjct_stat;
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}
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/*
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* given a reply message, fills in the error
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*/
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void
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_seterr_reply(msg, error)
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register struct rpc_msg *msg;
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register struct rpc_err *error;
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{
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/* optimized for normal, SUCCESSful case */
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switch (msg->rm_reply.rp_stat) {
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case MSG_ACCEPTED:
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if (msg->acpted_rply.ar_stat == SUCCESS) {
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error->re_status = RPC_SUCCESS;
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return;
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};
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accepted(msg->acpted_rply.ar_stat, error);
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break;
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case MSG_DENIED:
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rejected(msg->rjcted_rply.rj_stat, error);
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break;
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default:
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error->re_status = RPC_FAILED;
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error->re_lb.s1 = (long)(msg->rm_reply.rp_stat);
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break;
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}
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switch (error->re_status) {
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case RPC_VERSMISMATCH:
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error->re_vers.low = msg->rjcted_rply.rj_vers.low;
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error->re_vers.high = msg->rjcted_rply.rj_vers.high;
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break;
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case RPC_AUTHERROR:
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error->re_why = msg->rjcted_rply.rj_why;
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break;
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case RPC_PROGVERSMISMATCH:
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error->re_vers.low = msg->acpted_rply.ar_vers.low;
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error->re_vers.high = msg->acpted_rply.ar_vers.high;
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break;
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default:
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break;
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}
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}
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