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