123 lines
3.2 KiB
C
123 lines
3.2 KiB
C
/* $NetBSD: authunix_prot.c,v 1.12 2000/01/22 22:19:17 mycroft Exp $ */
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/*
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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 *sccsid2 = "@(#)authunix_prot.c 1.15 87/08/11 Copyr 1984 Sun Micro";
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static char *sccsid = "@(#)authunix_prot.c 2.1 88/07/29 4.0 RPCSRC";
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* authunix_prot.c
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* XDR for UNIX style authentication parameters for RPC
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*
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* Copyright (C) 1984, Sun Microsystems, Inc.
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*/
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/ucred.h>
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#include <rpc/types.h>
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#include <rpc/xdr.h>
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#include <rpc/auth.h>
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#include <rpc/rpc_com.h>
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/* gids compose part of a credential; there may not be more than 16 of them */
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#define NGRPS 16
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/*
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* XDR for unix authentication parameters.
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*/
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bool_t
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xdr_authunix_parms(XDR *xdrs, uint32_t *time, struct xucred *cred)
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{
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uint32_t namelen;
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uint32_t ngroups, i;
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uint32_t junk;
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if (xdrs->x_op == XDR_ENCODE) {
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namelen = strlen(hostname);
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} else {
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namelen = 0;
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}
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junk = 0;
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if (!xdr_uint32_t(xdrs, time)
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|| !xdr_uint32_t(xdrs, &namelen))
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return (FALSE);
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/*
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* Ignore the hostname on decode.
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*/
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if (xdrs->x_op == XDR_ENCODE) {
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if (!xdr_opaque(xdrs, hostname, namelen))
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return (FALSE);
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} else {
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xdr_setpos(xdrs, xdr_getpos(xdrs) + RNDUP(namelen));
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}
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if (!xdr_uint32_t(xdrs, &cred->cr_uid))
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return (FALSE);
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if (!xdr_uint32_t(xdrs, &cred->cr_groups[0]))
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return (FALSE);
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if (xdrs->x_op == XDR_ENCODE) {
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ngroups = cred->cr_ngroups - 1;
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if (ngroups > NGRPS)
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ngroups = NGRPS;
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}
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if (!xdr_uint32_t(xdrs, &ngroups))
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return (FALSE);
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for (i = 0; i < ngroups; i++) {
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if (i + 1 < NGROUPS) {
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if (!xdr_uint32_t(xdrs, &cred->cr_groups[i + 1]))
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return (FALSE);
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} else {
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if (!xdr_uint32_t(xdrs, &junk))
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return (FALSE);
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}
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}
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if (xdrs->x_op == XDR_DECODE) {
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if (ngroups + 1 > NGROUPS)
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cred->cr_ngroups = NGROUPS;
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else
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cred->cr_ngroups = ngroups + 1;
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}
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return (TRUE);
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}
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