3 /*-
4  * SPDX-License-Identifier: BSD-3-Clause
11  * - Redistributions of source code must retain the above copyright notice, 
13  * - Redistributions in binary form must reproduce the above copyright notice, 
16  * - Neither the name of Sun Microsystems, Inc. nor the names of its 
39  * The system is very weak.  The client uses no encryption for it's
59 #include <rpc/auth.h>
65 static void authunix_nextverf (AUTH *);
66 static bool_t authunix_marshal (AUTH *, uint32_t, XDR *, struct mbuf *);
67 static bool_t authunix_validate (AUTH *, uint32_t, struct opaque_auth *,
69 static bool_t authunix_refresh (AUTH *, void *);
70 static void authunix_destroy (AUTH *);
71 static void marshal_new_auth (AUTH *);
94 	AUTH			*au_auth;	/* link back to AUTH */
97 #define	AUTH_PRIVATE(auth)	((struct audata *)auth->ah_private)  argument
120  * Returns an auth handle with the given stuff in it.
122 AUTH *
129 	AUTH *auth;  in authunix_create()  local
139 			th = HASHSTEP(HASHINIT, tau->au_xcred.cr_uid)  in authunix_create()
143 			auth_unix_count--;  in authunix_create()
145 			AUTH_DESTROY(tau->au_auth);  in authunix_create()
150 	 * Hash the uid to see if we already have an AUTH with this cred.  in authunix_create()
152 	h = HASHSTEP(HASHINIT, cred->cr_uid) % AUTH_UNIX_HASH_SIZE;  in authunix_create()
157 		if (!memcmp(&xcr, &au->au_xcred, sizeof(xcr))) {  in authunix_create()
158 			refcount_acquire(&au->au_refs);  in authunix_create()
170 			return (au->au_auth);  in authunix_create()
177 	 * Allocate and set up auth handle  in authunix_create()
180 	auth = mem_alloc(sizeof(*auth));  in authunix_create()
182 	auth->ah_ops = &authunix_ops;  in authunix_create()
183 	auth->ah_private = (caddr_t)au;  in authunix_create()
184 	auth->ah_verf = au->au_shcred = _null_auth;  in authunix_create()
185 	refcount_init(&au->au_refs, 1);  in authunix_create()
186 	au->au_xcred = xcr;  in authunix_create()
187 	au->au_shfaults = 0;  in authunix_create()
188 	au->au_origcred.oa_base = NULL;  in authunix_create()
189 	au->au_auth = auth;  in authunix_create()
201 	au->au_origcred.oa_length = len = XDR_GETPOS(&xdrs);  in authunix_create()
202 	au->au_origcred.oa_flavor = AUTH_UNIX;  in authunix_create()
203 	au->au_origcred.oa_base = mem_alloc((u_int) len);  in authunix_create()
204 	memcpy(au->au_origcred.oa_base, mymem, (size_t)len);  in authunix_create()
207 	 * set auth handle to reflect new cred.  in authunix_create()
209 	auth->ah_cred = au->au_origcred;  in authunix_create()
210 	marshal_new_auth(auth);  in authunix_create()
214 		if (!memcmp(&xcr, &tau->au_xcred, sizeof(xcr))) {  in authunix_create()
216 			 * We lost a race to create the AUTH that  in authunix_create()
220 			AUTH_DESTROY(auth);  in authunix_create()
228 	refcount_acquire(&au->au_refs);	/* one for the cache, one for user */  in authunix_create()
231 	return (auth);  in authunix_create()
240 authunix_nextverf(AUTH *auth)  in authunix_nextverf()  argument
246 authunix_marshal(AUTH *auth, uint32_t xid, XDR *xdrs, struct mbuf *args)  in authunix_marshal()  argument
250 	au = AUTH_PRIVATE(auth);  in authunix_marshal()
251 	if (!XDR_PUTBYTES(xdrs, au->au_marshed, au->au_mpos))  in authunix_marshal()
258 authunix_validate(AUTH *auth, uint32_t xid, struct opaque_auth *verf,  in authunix_validate()  argument
267 	if (verf->oa_flavor == AUTH_SHORT) {  in authunix_validate()
268 		au = AUTH_PRIVATE(auth);  in authunix_validate()
269 		xdrmem_create(&txdrs, verf->oa_base, verf->oa_length,  in authunix_validate()
272 		if (au->au_shcred.oa_base != NULL) {  in authunix_validate()
273 			mem_free(au->au_shcred.oa_base,  in authunix_validate()
274 			    au->au_shcred.oa_length);  in authunix_validate()
275 			au->au_shcred.oa_base = NULL;  in authunix_validate()
277 		if (xdr_opaque_auth(&txdrs, &au->au_shcred)) {  in authunix_validate()
278 			auth->ah_cred = au->au_shcred;  in authunix_validate()
281 			(void)xdr_opaque_auth(&txdrs, &au->au_shcred);  in authunix_validate()
282 			au->au_shcred.oa_base = NULL;  in authunix_validate()
283 			auth->ah_cred = au->au_origcred;  in authunix_validate()
285 		marshal_new_auth(auth);  in authunix_validate()
292 authunix_refresh(AUTH *auth, void *dummy)  in authunix_refresh()  argument
294 	struct audata *au = AUTH_PRIVATE(auth);  in authunix_refresh()
301 	if (auth->ah_cred.oa_base == au->au_origcred.oa_base) {  in authunix_refresh()
305 	au->au_shfaults ++;  in authunix_refresh()
308 	xdrmem_create(&xdrs, au->au_origcred.oa_base,  in authunix_refresh()
309 	    au->au_origcred.oa_length, XDR_DECODE);  in authunix_refresh()
323 	auth->ah_cred = au->au_origcred;  in authunix_refresh()
324 	marshal_new_auth(auth);  in authunix_refresh()
331 authunix_destroy(AUTH *auth)  in authunix_destroy()  argument
335 	au = AUTH_PRIVATE(auth);  in authunix_destroy()
337 	if (!refcount_release(&au->au_refs))  in authunix_destroy()
340 	mem_free(au->au_origcred.oa_base, au->au_origcred.oa_length);  in authunix_destroy()
342 	if (au->au_shcred.oa_base != NULL)  in authunix_destroy()
343 		mem_free(au->au_shcred.oa_base, au->au_shcred.oa_length);  in authunix_destroy()
345 	mem_free(auth->ah_private, sizeof(struct audata));  in authunix_destroy()
347 	if (auth->ah_verf.oa_base != NULL)  in authunix_destroy()
348 		mem_free(auth->ah_verf.oa_base, auth->ah_verf.oa_length);  in authunix_destroy()
350 	mem_free(auth, sizeof(*auth));  in authunix_destroy()
354  * Marshals (pre-serializes) an auth struct.
358 marshal_new_auth(AUTH *auth)  in marshal_new_auth()  argument
364 	au = AUTH_PRIVATE(auth);  in marshal_new_auth()
365 	xdrmem_create(xdrs, au->au_marshed, MAX_AUTH_BYTES, XDR_ENCODE);  in marshal_new_auth()
366 	if ((! xdr_opaque_auth(xdrs, &(auth->ah_cred))) ||  in marshal_new_auth()
367 	    (! xdr_opaque_auth(xdrs, &(auth->ah_verf))))  in marshal_new_auth()
368 		printf("auth_none.c - Fatal marshalling problem");  in marshal_new_auth()
370 		au->au_mpos = XDR_GETPOS(xdrs);  in marshal_new_auth()