1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright 1989 Sun Microsystems, Inc. All rights reserved.
24*0Sstevel@tonic-gate * Use is subject to license terms.
25*0Sstevel@tonic-gate */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
28*0Sstevel@tonic-gate /* All Rights Reserved */
29*0Sstevel@tonic-gate
30*0Sstevel@tonic-gate /*
31*0Sstevel@tonic-gate * Portions of this source code were derived from Berkeley 4.3 BSD
32*0Sstevel@tonic-gate * under license from the Regents of the University of California.
33*0Sstevel@tonic-gate */
34*0Sstevel@tonic-gate
35*0Sstevel@tonic-gate #ident "%Z%%M% %I% %E% SMI"
36*0Sstevel@tonic-gate
37*0Sstevel@tonic-gate /*
38*0Sstevel@tonic-gate * svc_auth_unix.c
39*0Sstevel@tonic-gate * Handles UNIX flavor authentication parameters on the service side of rpc.
40*0Sstevel@tonic-gate * There are two svc auth implementations here: AUTH_UNIX and AUTH_SHORT.
41*0Sstevel@tonic-gate * _svcauth_unix does full blown unix style uid, gid+gids auth,
42*0Sstevel@tonic-gate * _svcauth_short uses a shorthand auth to index into a cache of longhand auths.
43*0Sstevel@tonic-gate * Note: the shorthand has been gutted for efficiency.
44*0Sstevel@tonic-gate */
45*0Sstevel@tonic-gate
46*0Sstevel@tonic-gate #include <sys/param.h>
47*0Sstevel@tonic-gate #include <sys/types.h>
48*0Sstevel@tonic-gate #include <sys/time.h>
49*0Sstevel@tonic-gate #include <sys/systm.h>
50*0Sstevel@tonic-gate #include <sys/stream.h>
51*0Sstevel@tonic-gate #include <sys/stropts.h>
52*0Sstevel@tonic-gate #include <sys/strsubr.h>
53*0Sstevel@tonic-gate #include <sys/tiuser.h>
54*0Sstevel@tonic-gate #include <sys/tihdr.h>
55*0Sstevel@tonic-gate #include <sys/t_kuser.h>
56*0Sstevel@tonic-gate #include <sys/cmn_err.h>
57*0Sstevel@tonic-gate
58*0Sstevel@tonic-gate #include <rpc/types.h>
59*0Sstevel@tonic-gate #include <rpc/xdr.h>
60*0Sstevel@tonic-gate #include <rpc/auth.h>
61*0Sstevel@tonic-gate #include <rpc/clnt.h>
62*0Sstevel@tonic-gate #include <rpc/rpc_msg.h>
63*0Sstevel@tonic-gate #include <rpc/svc.h>
64*0Sstevel@tonic-gate #include <rpc/auth_unix.h>
65*0Sstevel@tonic-gate #include <rpc/svc_auth.h>
66*0Sstevel@tonic-gate
67*0Sstevel@tonic-gate
68*0Sstevel@tonic-gate /*
69*0Sstevel@tonic-gate * Unix longhand authenticator
70*0Sstevel@tonic-gate */
71*0Sstevel@tonic-gate enum auth_stat
_svcauth_unix(struct svc_req * rqst,struct rpc_msg * msg)72*0Sstevel@tonic-gate _svcauth_unix(struct svc_req *rqst, struct rpc_msg *msg)
73*0Sstevel@tonic-gate {
74*0Sstevel@tonic-gate enum auth_stat stat;
75*0Sstevel@tonic-gate XDR xdrs;
76*0Sstevel@tonic-gate struct authunix_parms *aup;
77*0Sstevel@tonic-gate int32_t *buf;
78*0Sstevel@tonic-gate struct area {
79*0Sstevel@tonic-gate struct authunix_parms area_aup;
80*0Sstevel@tonic-gate char area_machname[MAX_MACHINE_NAME+1];
81*0Sstevel@tonic-gate u_int area_gids[NGRPS];
82*0Sstevel@tonic-gate } *area;
83*0Sstevel@tonic-gate u_int auth_len;
84*0Sstevel@tonic-gate u_int str_len, gid_len;
85*0Sstevel@tonic-gate int i;
86*0Sstevel@tonic-gate
87*0Sstevel@tonic-gate /* LINTED pointer alignment */
88*0Sstevel@tonic-gate area = (struct area *) rqst->rq_clntcred;
89*0Sstevel@tonic-gate aup = &area->area_aup;
90*0Sstevel@tonic-gate aup->aup_machname = area->area_machname;
91*0Sstevel@tonic-gate aup->aup_gids = (gid_t *)area->area_gids;
92*0Sstevel@tonic-gate auth_len = (u_int)msg->rm_call.cb_cred.oa_length;
93*0Sstevel@tonic-gate xdrmem_create(&xdrs, msg->rm_call.cb_cred.oa_base, auth_len,
94*0Sstevel@tonic-gate XDR_DECODE);
95*0Sstevel@tonic-gate buf = XDR_INLINE(&xdrs, auth_len);
96*0Sstevel@tonic-gate if (buf != NULL) {
97*0Sstevel@tonic-gate aup->aup_time = IXDR_GET_INT32(buf);
98*0Sstevel@tonic-gate str_len = IXDR_GET_U_INT32(buf);
99*0Sstevel@tonic-gate if (str_len > MAX_MACHINE_NAME) {
100*0Sstevel@tonic-gate stat = AUTH_BADCRED;
101*0Sstevel@tonic-gate goto done;
102*0Sstevel@tonic-gate }
103*0Sstevel@tonic-gate bcopy((caddr_t)buf, aup->aup_machname, (u_int)str_len);
104*0Sstevel@tonic-gate aup->aup_machname[str_len] = 0;
105*0Sstevel@tonic-gate str_len = RNDUP(str_len);
106*0Sstevel@tonic-gate buf += str_len / sizeof (int32_t);
107*0Sstevel@tonic-gate aup->aup_uid = IXDR_GET_INT32(buf);
108*0Sstevel@tonic-gate aup->aup_gid = IXDR_GET_INT32(buf);
109*0Sstevel@tonic-gate gid_len = IXDR_GET_U_INT32(buf);
110*0Sstevel@tonic-gate if (gid_len > NGRPS) {
111*0Sstevel@tonic-gate stat = AUTH_BADCRED;
112*0Sstevel@tonic-gate goto done;
113*0Sstevel@tonic-gate }
114*0Sstevel@tonic-gate aup->aup_len = gid_len;
115*0Sstevel@tonic-gate for (i = 0; i < gid_len; i++) {
116*0Sstevel@tonic-gate aup->aup_gids[i] = IXDR_GET_INT32(buf);
117*0Sstevel@tonic-gate }
118*0Sstevel@tonic-gate /*
119*0Sstevel@tonic-gate * five is the smallest unix credentials structure -
120*0Sstevel@tonic-gate * timestamp, hostname len (0), uid, gid, and gids len (0).
121*0Sstevel@tonic-gate */
122*0Sstevel@tonic-gate if ((5 + gid_len) * BYTES_PER_XDR_UNIT + str_len > auth_len) {
123*0Sstevel@tonic-gate printf("bad auth_len gid %d str %d auth %d",
124*0Sstevel@tonic-gate gid_len, str_len, auth_len);
125*0Sstevel@tonic-gate stat = AUTH_BADCRED;
126*0Sstevel@tonic-gate goto done;
127*0Sstevel@tonic-gate }
128*0Sstevel@tonic-gate } else if (! xdr_authunix_parms(&xdrs, aup)) {
129*0Sstevel@tonic-gate xdrs.x_op = XDR_FREE;
130*0Sstevel@tonic-gate (void) xdr_authunix_parms(&xdrs, aup);
131*0Sstevel@tonic-gate stat = AUTH_BADCRED;
132*0Sstevel@tonic-gate goto done;
133*0Sstevel@tonic-gate }
134*0Sstevel@tonic-gate rqst->rq_xprt->xp_verf.oa_flavor = AUTH_NULL;
135*0Sstevel@tonic-gate rqst->rq_xprt->xp_verf.oa_length = 0;
136*0Sstevel@tonic-gate stat = AUTH_OK;
137*0Sstevel@tonic-gate done:
138*0Sstevel@tonic-gate XDR_DESTROY(&xdrs);
139*0Sstevel@tonic-gate return (stat);
140*0Sstevel@tonic-gate }
141*0Sstevel@tonic-gate
142*0Sstevel@tonic-gate
143*0Sstevel@tonic-gate /*
144*0Sstevel@tonic-gate * Shorthand unix authenticator
145*0Sstevel@tonic-gate * Looks up longhand in a cache.
146*0Sstevel@tonic-gate */
147*0Sstevel@tonic-gate /* ARGSUSED */
148*0Sstevel@tonic-gate enum auth_stat
_svcauth_short(struct svc_req * rqst,struct rpc_msg * msg)149*0Sstevel@tonic-gate _svcauth_short(struct svc_req *rqst, struct rpc_msg *msg)
150*0Sstevel@tonic-gate {
151*0Sstevel@tonic-gate return (AUTH_REJECTEDCRED);
152*0Sstevel@tonic-gate }
153