[apple/libinfo.git] / rpc.subproj / auth_unix.c

/*
 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
 * Reserved.  This file contains Original Code and/or Modifications of
 * Original Code as defined in and that are subject to the Apple Public
 * Source License Version 1.1 (the "License").  You may not use this file
 * except in compliance with the License.  Please obtain a copy of the
 * License at http://www.apple.com/publicsource and read it before using
 * this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * 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
 */

#if defined(LIBC_SCCS) && !defined(lint)
/*static char *sccsid = "from: @(#)auth_unix.c 1.19 87/08/11 Copyr 1984 Sun Micro";*/
/*static char *sccsid = "from: @(#)auth_unix.c	2.2 88/08/01 4.0 RPCSRC";*/
static char *rcsid = "$Id: auth_unix.c,v 1.4 2002/02/19 20:36:22 epeyton Exp $";
#endif

/*
 * auth_unix.c, Implements UNIX style authentication parameters. 
 *  
 * Copyright (C) 1984, Sun Microsystems, Inc.
 *
 * The system is very weak.  The client uses no encryption for it's
 * credentials and only sends null verifiers.  The server sends backs
 * null verifiers or optionally a verifier that suggests a new short hand
 * for the credentials.
 *
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/param.h>
#include <sys/types.h>
#include <netinet/in.h>

#include <rpc/types.h>
#include <rpc/xdr.h>
#include <rpc/auth.h>
#include <rpc/auth_unix.h>

extern bool_t	xdr_opaque_auth();

/*
 * Unix authenticator operations vector
 */
static void	authunix_nextverf();
static bool_t	authunix_marshal();
static bool_t	authunix_validate();
static bool_t	authunix_refresh();
static void	authunix_destroy();

static struct auth_ops auth_unix_ops = {
	authunix_nextverf,
	authunix_marshal,
	authunix_validate,
	authunix_refresh,
	authunix_destroy
};

/*
 * This struct is pointed to by the ah_private field of an auth_handle.
 */
struct audata {
	struct opaque_auth	au_origcred;	/* original credentials */
	struct opaque_auth	au_shcred;	/* short hand cred */
#ifdef __LP64__
	uint32_t			au_shfaults;	/* short hand cache faults */
#else
	u_long			au_shfaults;	/* short hand cache faults */
#endif
	char			au_marshed[MAX_AUTH_BYTES];
	u_int			au_mpos;	/* xdr pos at end of marshed */
};
#define	AUTH_PRIVATE(auth)	((struct audata *)auth->ah_private)

static void marshal_new_auth();


/*
 * Create a unix style authenticator.
 * Returns an auth handle with the given stuff in it.
 */
AUTH *
authunix_create(machname, uid, gid, len, aup_gids)
	char *machname;
	int uid;
	int gid;
	register int len;
	int *aup_gids;
{
	struct authunix_parms aup;
	char mymem[MAX_AUTH_BYTES];
	struct timeval now;
	XDR xdrs;
	register AUTH *auth;
	register struct audata *au;

	/*
	 * Allocate and set up auth handle
	 */
	auth = (AUTH *)mem_alloc(sizeof(*auth));
#ifndef KERNEL
	if (auth == NULL) {
		(void)fprintf(stderr, "authunix_create: out of memory\n");
		return (NULL);
	}
#endif
	au = (struct audata *)mem_alloc(sizeof(*au));
#ifndef KERNEL
	if (au == NULL) {
		(void)fprintf(stderr, "authunix_create: out of memory\n");
		return (NULL);
	}
#endif
	auth->ah_ops = &auth_unix_ops;
	auth->ah_private = (caddr_t)au;
	auth->ah_verf = au->au_shcred = _null_auth;
	au->au_shfaults = 0;

	/*
	 * fill in param struct from the given params
	 */
	(void)gettimeofday(&now,  (struct timezone *)0);
	aup.aup_time = now.tv_sec;
	aup.aup_machname = machname;
	aup.aup_uid = uid;
	aup.aup_gid = gid;
	aup.aup_len = (u_int)len;
	aup.aup_gids = aup_gids;

	/*
	 * Serialize the parameters into origcred
	 */
	xdrmem_create(&xdrs, mymem, MAX_AUTH_BYTES, XDR_ENCODE);
	if (! xdr_authunix_parms(&xdrs, &aup)) 
		abort();
	au->au_origcred.oa_length = len = XDR_GETPOS(&xdrs);
	au->au_origcred.oa_flavor = AUTH_UNIX;
#ifdef KERNEL
	au->au_origcred.oa_base = mem_alloc((u_int) len);
#else
	if ((au->au_origcred.oa_base = mem_alloc((u_int) len)) == NULL) {
		(void)fprintf(stderr, "authunix_create: out of memory\n");
		return (NULL);
	}
#endif
	bcopy(mymem, au->au_origcred.oa_base, (u_int)len);

	/*
	 * set auth handle to reflect new cred.
	 */
	auth->ah_cred = au->au_origcred;
	marshal_new_auth(auth);
	return (auth);
}

/*
* Some servers will refuse mounts if the group list is larger
* than it expects (like 8). This allows the application to set
* the maximum size of the group list that will be sent.
*/

static int maxgrplist = NGROUPS;

void
set_rpc_maxgrouplist(num)
	int num;
{
    if (num < NGROUPS)
        maxgrplist = num;
}

/*
 * Returns an auth handle with parameters determined by doing lots of
 * syscalls.
 */
AUTH *
authunix_create_default()
{
	register int len;
	char machname[MAX_MACHINE_NAME + 1];
	register int uid;
	register int gid;
	gid_t gids[NGROUPS];

	if (gethostname(machname, MAX_MACHINE_NAME) == -1)
		abort();
	machname[MAX_MACHINE_NAME] = 0;
	uid = geteuid();
	gid = getegid();
	if ((len = getgroups(NGROUPS, gids)) < 0)
		abort();
        if (len > maxgrplist) {
            len = maxgrplist;
        }
	return (authunix_create(machname, uid, gid, len, (int *)gids));
}

/*
 * authunix operations
 */

static void
authunix_nextverf(auth)
	AUTH *auth;
{
	/* no action necessary */
}

static bool_t
authunix_marshal(auth, xdrs)
	AUTH *auth;
	XDR *xdrs;
{
	register struct audata *au = AUTH_PRIVATE(auth);

	return (XDR_PUTBYTES(xdrs, au->au_marshed, au->au_mpos));
}

static bool_t
authunix_validate(auth, verf)
	register AUTH *auth;
	struct opaque_auth verf;
{
	register struct audata *au;
	XDR xdrs;

	if (verf.oa_flavor == AUTH_SHORT) {
		au = AUTH_PRIVATE(auth);
		xdrmem_create(&xdrs, verf.oa_base, verf.oa_length, XDR_DECODE);

		if (au->au_shcred.oa_base != NULL) {
			mem_free(au->au_shcred.oa_base,
			    au->au_shcred.oa_length);
			au->au_shcred.oa_base = NULL;
		}
		if (xdr_opaque_auth(&xdrs, &au->au_shcred)) {
			auth->ah_cred = au->au_shcred;
		} else {
			xdrs.x_op = XDR_FREE;
			(void)xdr_opaque_auth(&xdrs, &au->au_shcred);
			au->au_shcred.oa_base = NULL;
			auth->ah_cred = au->au_origcred;
		}
		marshal_new_auth(auth);
	}
	return (TRUE);
}

static bool_t
authunix_refresh(auth)
	register AUTH *auth;
{
	register struct audata *au = AUTH_PRIVATE(auth);
	struct authunix_parms aup;
	struct timeval now;
	XDR xdrs;
	register int stat;

	if (auth->ah_cred.oa_base == au->au_origcred.oa_base) {
		/* there is no hope.  Punt */
		return (FALSE);
	}
	au->au_shfaults ++;

	/* first deserialize the creds back into a struct authunix_parms */
	aup.aup_machname = NULL;
	aup.aup_gids = (int *)NULL;
	xdrmem_create(&xdrs, au->au_origcred.oa_base,
	    au->au_origcred.oa_length, XDR_DECODE);
	stat = xdr_authunix_parms(&xdrs, &aup);
	if (! stat) 
		goto done;

	/* update the time and serialize in place */
	(void)gettimeofday(&now, (struct timezone *)0);
	aup.aup_time = now.tv_sec;
	xdrs.x_op = XDR_ENCODE;
	XDR_SETPOS(&xdrs, 0);
	stat = xdr_authunix_parms(&xdrs, &aup);
	if (! stat)
		goto done;
	auth->ah_cred = au->au_origcred;
	marshal_new_auth(auth);
done:
	/* free the struct authunix_parms created by deserializing */
	xdrs.x_op = XDR_FREE;
	(void)xdr_authunix_parms(&xdrs, &aup);
	XDR_DESTROY(&xdrs);
	return (stat);
}

static void
authunix_destroy(auth)
	register AUTH *auth;
{
	register struct audata *au = AUTH_PRIVATE(auth);

	mem_free(au->au_origcred.oa_base, au->au_origcred.oa_length);

	if (au->au_shcred.oa_base != NULL)
		mem_free(au->au_shcred.oa_base, au->au_shcred.oa_length);

	mem_free(auth->ah_private, sizeof(struct audata));

	if (auth->ah_verf.oa_base != NULL)
		mem_free(auth->ah_verf.oa_base, auth->ah_verf.oa_length);

	mem_free((caddr_t)auth, sizeof(*auth));
}

/*
 * Marshals (pre-serializes) an auth struct.
 * sets private data, au_marshed and au_mpos
 */
static void
marshal_new_auth(auth)
	register AUTH *auth;
{
	XDR		xdr_stream;
	register XDR	*xdrs = &xdr_stream;
	register struct audata *au = AUTH_PRIVATE(auth);

	xdrmem_create(xdrs, au->au_marshed, MAX_AUTH_BYTES, XDR_ENCODE);
	if ((! xdr_opaque_auth(xdrs, &(auth->ah_cred))) ||
	    (! xdr_opaque_auth(xdrs, &(auth->ah_verf)))) {
		perror("auth_none.c - Fatal marshalling problem");
	} else {
		au->au_mpos = XDR_GETPOS(xdrs);
	}
	XDR_DESTROY(xdrs);
}
Commit	Line	Data
03fb6eb0 A	1	/*
	2	* Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
ad21edcc A	6	* Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
	7	* Reserved. This file contains Original Code and/or Modifications of
	8	* Original Code as defined in and that are subject to the Apple Public
	9	* Source License Version 1.1 (the "License"). You may not use this file
	10	* except in compliance with the License. Please obtain a copy of the
	11	* License at http://www.apple.com/publicsource and read it before using
	12	* this file.
03fb6eb0 A	13	*
03fb6eb0 A	14	* The Original Code and all software distributed under the License are
ad21edcc	15	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
03fb6eb0 A	16	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
03fb6eb0 A	17	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
ad21edcc A	18	* FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT. Please see the
	19	* License for the specific language governing rights and limitations
	20	* under the License.
03fb6eb0 A	21	*
	22	* @APPLE_LICENSE_HEADER_END@
	23	*/
	24	/*
	25	* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
	26	* unrestricted use provided that this legend is included on all tape
	27	* media and as a part of the software program in whole or part. Users
	28	* may copy or modify Sun RPC without charge, but are not authorized
	29	* to license or distribute it to anyone else except as part of a product or
	30	* program developed by the user.
	31	*
	32	* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
	33	* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
	34	* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
	35	*
	36	* Sun RPC is provided with no support and without any obligation on the
	37	* part of Sun Microsystems, Inc. to assist in its use, correction,
	38	* modification or enhancement.
	39	*
	40	* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
	41	* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
	42	* OR ANY PART THEREOF.
	43	*
	44	* In no event will Sun Microsystems, Inc. be liable for any lost revenue
	45	* or profits or other special, indirect and consequential damages, even if
	46	* Sun has been advised of the possibility of such damages.
	47	*
	48	* Sun Microsystems, Inc.
	49	* 2550 Garcia Avenue
	50	* Mountain View, California 94043
	51	*/
	52
	53	#if defined(LIBC_SCCS) && !defined(lint)
	54	/static char sccsid = "from: @(#)auth_unix.c 1.19 87/08/11 Copyr 1984 Sun Micro";*/
	55	/static char sccsid = "from: @(#)auth_unix.c 2.2 88/08/01 4.0 RPCSRC";*/
3b7c7bd7	56	static char *rcsid = "$Id: auth_unix.c,v 1.4 2002/02/19 20:36:22 epeyton Exp $";
03fb6eb0 A	57	#endif
	58
	59	/*
	60	* auth_unix.c, Implements UNIX style authentication parameters.
	61	*
	62	* Copyright (C) 1984, Sun Microsystems, Inc.
	63	*
	64	* The system is very weak. The client uses no encryption for it's
	65	* credentials and only sends null verifiers. The server sends backs
	66	* null verifiers or optionally a verifier that suggests a new short hand
	67	* for the credentials.
	68	*
	69	*/
	70
	71	#include <stdio.h>
	72	#include <stdlib.h>
3b7c7bd7 A	73	#include <string.h>
3b7c7bd7 A	74	#include <unistd.h>
03fb6eb0	75	#include <sys/param.h>
3b7c7bd7 A	76	#include <sys/types.h>
3b7c7bd7 A	77	#include <netinet/in.h>
03fb6eb0 A	78
	79	#include <rpc/types.h>
	80	#include <rpc/xdr.h>
	81	#include <rpc/auth.h>
	82	#include <rpc/auth_unix.h>
	83
3b7c7bd7 A	84	extern bool_t xdr_opaque_auth();
3b7c7bd7 A	85
03fb6eb0 A	86	/*
	87	* Unix authenticator operations vector
	88	*/
	89	static void authunix_nextverf();
	90	static bool_t authunix_marshal();
	91	static bool_t authunix_validate();
	92	static bool_t authunix_refresh();
	93	static void authunix_destroy();
	94
	95	static struct auth_ops auth_unix_ops = {
	96	authunix_nextverf,
	97	authunix_marshal,
	98	authunix_validate,
	99	authunix_refresh,
	100	authunix_destroy
	101	};
	102
	103	/*
	104	* This struct is pointed to by the ah_private field of an auth_handle.
	105	*/
	106	struct audata {
	107	struct opaque_auth au_origcred; /* original credentials */
	108	struct opaque_auth au_shcred; /* short hand cred */
1c0d47b0 A	109	#ifdef __LP64__
	110	uint32_t au_shfaults; /* short hand cache faults */
	111	#else
03fb6eb0	112	u_long au_shfaults; /* short hand cache faults */
1c0d47b0	113	#endif
03fb6eb0 A	114	char au_marshed[MAX_AUTH_BYTES];
	115	u_int au_mpos; /* xdr pos at end of marshed */
	116	};
	117	#define AUTH_PRIVATE(auth) ((struct audata *)auth->ah_private)
	118
3b7c7bd7	119	static void marshal_new_auth();
03fb6eb0 A	120
	121
	122	/*
	123	* Create a unix style authenticator.
	124	* Returns an auth handle with the given stuff in it.
	125	*/
	126	AUTH *
	127	authunix_create(machname, uid, gid, len, aup_gids)
	128	char *machname;
	129	int uid;
	130	int gid;
	131	register int len;
	132	int *aup_gids;
	133	{
	134	struct authunix_parms aup;
	135	char mymem[MAX_AUTH_BYTES];
	136	struct timeval now;
	137	XDR xdrs;
	138	register AUTH *auth;
	139	register struct audata *au;
	140
	141	/*
	142	* Allocate and set up auth handle
	143	*/
	144	auth = (AUTH )mem_alloc(sizeof(auth));
	145	#ifndef KERNEL
	146	if (auth == NULL) {
	147	(void)fprintf(stderr, "authunix_create: out of memory\n");
	148	return (NULL);
	149	}
	150	#endif
	151	au = (struct audata )mem_alloc(sizeof(au));
	152	#ifndef KERNEL
	153	if (au == NULL) {
	154	(void)fprintf(stderr, "authunix_create: out of memory\n");
	155	return (NULL);
	156	}
	157	#endif
	158	auth->ah_ops = &auth_unix_ops;
	159	auth->ah_private = (caddr_t)au;
	160	auth->ah_verf = au->au_shcred = _null_auth;
	161	au->au_shfaults = 0;
	162
	163	/*
	164	* fill in param struct from the given params
	165	*/
	166	(void)gettimeofday(&now, (struct timezone *)0);
	167	aup.aup_time = now.tv_sec;
	168	aup.aup_machname = machname;
	169	aup.aup_uid = uid;
	170	aup.aup_gid = gid;
	171	aup.aup_len = (u_int)len;
	172	aup.aup_gids = aup_gids;
	173
	174	/*
	175	* Serialize the parameters into origcred
	176	*/
	177	xdrmem_create(&xdrs, mymem, MAX_AUTH_BYTES, XDR_ENCODE);
	178	if (! xdr_authunix_parms(&xdrs, &aup))
	179	abort();
	180	au->au_origcred.oa_length = len = XDR_GETPOS(&xdrs);
	181	au->au_origcred.oa_flavor = AUTH_UNIX;
	182	#ifdef KERNEL
	183	au->au_origcred.oa_base = mem_alloc((u_int) len);
184	#else
185	if ((au->au_origcred.oa_base = mem_alloc((u_int) len)) == NULL) {
186	(void)fprintf(stderr, "authunix_create: out of memory\n");
187	return (NULL);
188	}
189	#endif
190	bcopy(mymem, au->au_origcred.oa_base, (u_int)len);
191
192	/*
193	* set auth handle to reflect new cred.
194	*/
195	auth->ah_cred = au->au_origcred;
196	marshal_new_auth(auth);
197	return (auth);
198	}
199
200	/*
201	* Some servers will refuse mounts if the group list is larger
202	* than it expects (like 8). This allows the application to set
203	* the maximum size of the group list that will be sent.
204	*/
205
3b7c7bd7	206	static int maxgrplist = NGROUPS;
03fb6eb0	207
3b7c7bd7	208	void
03fb6eb0 A	209	set_rpc_maxgrouplist(num)
	210	int num;
	211	{
	212	if (num < NGROUPS)
	213	maxgrplist = num;
	214	}
	215
	216	/*
	217	* Returns an auth handle with parameters determined by doing lots of
	218	* syscalls.
	219	*/
	220	AUTH *
	221	authunix_create_default()
	222	{
	223	register int len;
	224	char machname[MAX_MACHINE_NAME + 1];
	225	register int uid;
	226	register int gid;
b3dd680f	227	gid_t gids[NGROUPS];
03fb6eb0 A	228
	229	if (gethostname(machname, MAX_MACHINE_NAME) == -1)
	230	abort();
	231	machname[MAX_MACHINE_NAME] = 0;
	232	uid = geteuid();
	233	gid = getegid();
	234	if ((len = getgroups(NGROUPS, gids)) < 0)
	235	abort();
	236	if (len > maxgrplist) {
	237	len = maxgrplist;
	238	}
b3dd680f	239	return (authunix_create(machname, uid, gid, len, (int *)gids));
03fb6eb0 A	240	}
	241
	242	/*
	243	* authunix operations
	244	*/
	245
	246	static void
	247	authunix_nextverf(auth)
	248	AUTH *auth;
	249	{
	250	/* no action necessary */
	251	}
	252
	253	static bool_t
	254	authunix_marshal(auth, xdrs)
	255	AUTH *auth;
	256	XDR *xdrs;
	257	{
	258	register struct audata *au = AUTH_PRIVATE(auth);
	259
	260	return (XDR_PUTBYTES(xdrs, au->au_marshed, au->au_mpos));
	261	}
	262
	263	static bool_t
	264	authunix_validate(auth, verf)
	265	register AUTH *auth;
	266	struct opaque_auth verf;
	267	{
	268	register struct audata *au;
	269	XDR xdrs;
	270
	271	if (verf.oa_flavor == AUTH_SHORT) {
	272	au = AUTH_PRIVATE(auth);
	273	xdrmem_create(&xdrs, verf.oa_base, verf.oa_length, XDR_DECODE);
	274
	275	if (au->au_shcred.oa_base != NULL) {
	276	mem_free(au->au_shcred.oa_base,
	277	au->au_shcred.oa_length);
	278	au->au_shcred.oa_base = NULL;
	279	}
	280	if (xdr_opaque_auth(&xdrs, &au->au_shcred)) {
	281	auth->ah_cred = au->au_shcred;
	282	} else {
	283	xdrs.x_op = XDR_FREE;
	284	(void)xdr_opaque_auth(&xdrs, &au->au_shcred);
	285	au->au_shcred.oa_base = NULL;
	286	auth->ah_cred = au->au_origcred;
	287	}
	288	marshal_new_auth(auth);
	289	}
	290	return (TRUE);
	291	}
	292
	293	static bool_t
	294	authunix_refresh(auth)
	295	register AUTH *auth;
	296	{
	297	register struct audata *au = AUTH_PRIVATE(auth);
	298	struct authunix_parms aup;
	299	struct timeval now;
	300	XDR xdrs;
	301	register int stat;
	302
	303	if (auth->ah_cred.oa_base == au->au_origcred.oa_base) {
304	/* there is no hope. Punt */
305	return (FALSE);
306	}
307	au->au_shfaults ++;
308
309	/* first deserialize the creds back into a struct authunix_parms */
310	aup.aup_machname = NULL;
311	aup.aup_gids = (int *)NULL;
312	xdrmem_create(&xdrs, au->au_origcred.oa_base,
313	au->au_origcred.oa_length, XDR_DECODE);
314	stat = xdr_authunix_parms(&xdrs, &aup);
315	if (! stat)
316	goto done;
317
318	/* update the time and serialize in place */
319	(void)gettimeofday(&now, (struct timezone *)0);
320	aup.aup_time = now.tv_sec;
321	xdrs.x_op = XDR_ENCODE;
322	XDR_SETPOS(&xdrs, 0);
323	stat = xdr_authunix_parms(&xdrs, &aup);
324	if (! stat)
325	goto done;
326	auth->ah_cred = au->au_origcred;
327	marshal_new_auth(auth);
328	done:
329	/* free the struct authunix_parms created by deserializing */
330	xdrs.x_op = XDR_FREE;
331	(void)xdr_authunix_parms(&xdrs, &aup);
332	XDR_DESTROY(&xdrs);
333	return (stat);
334	}
335
336	static void
337	authunix_destroy(auth)
338	register AUTH *auth;
339	{
340	register struct audata *au = AUTH_PRIVATE(auth);
341
342	mem_free(au->au_origcred.oa_base, au->au_origcred.oa_length);
343
344	if (au->au_shcred.oa_base != NULL)
345	mem_free(au->au_shcred.oa_base, au->au_shcred.oa_length);
346
347	mem_free(auth->ah_private, sizeof(struct audata));
348
349	if (auth->ah_verf.oa_base != NULL)
350	mem_free(auth->ah_verf.oa_base, auth->ah_verf.oa_length);
351
352	mem_free((caddr_t)auth, sizeof(*auth));
353	}
354
355	/*
356	* Marshals (pre-serializes) an auth struct.
357	* sets private data, au_marshed and au_mpos
358	*/
3b7c7bd7	359	static void
03fb6eb0 A	360	marshal_new_auth(auth)
	361	register AUTH *auth;
	362	{
	363	XDR xdr_stream;
	364	register XDR *xdrs = &xdr_stream;
	365	register struct audata *au = AUTH_PRIVATE(auth);
	366
	367	xdrmem_create(xdrs, au->au_marshed, MAX_AUTH_BYTES, XDR_ENCODE);
	368	if ((! xdr_opaque_auth(xdrs, &(auth->ah_cred))) \|\|
	369	(! xdr_opaque_auth(xdrs, &(auth->ah_verf)))) {
	370	perror("auth_none.c - Fatal marshalling problem");
	371	} else {
	372	au->au_mpos = XDR_GETPOS(xdrs);
	373	}
	374	XDR_DESTROY(xdrs);
	375	}