2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2009, Sun Microsystems, Inc.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 * - Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 * - Neither the name of Sun Microsystems, Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived
16 * from this software without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
33 * Handles UNIX flavor authentication parameters on the service side of rpc.
34 * There are two svc auth implementations here: AUTH_UNIX and AUTH_SHORT.
35 * _svcauth_unix does full blown unix style uid,gid+gids auth,
36 * _svcauth_short uses a shorthand auth to index into a cache of longhand auths.
37 * Note: the shorthand has been gutted for efficiency.
39 * Copyright (C) 1984, Sun Microsystems, Inc.
42 #include "namespace.h"
48 #include "un-namespace.h"
51 * Unix longhand authenticator
54 _svcauth_unix(struct svc_req *rqst, struct rpc_msg *msg)
58 struct authunix_parms *aup;
61 struct authunix_parms area_aup;
62 char area_machname[MAX_MACHINE_NAME+1];
63 u_int area_gids[NGRPS];
66 size_t str_len, gid_len;
72 area = (struct area *) rqst->rq_clntcred;
73 aup = &area->area_aup;
74 aup->aup_machname = area->area_machname;
75 aup->aup_gids = area->area_gids;
76 auth_len = (u_int)msg->rm_call.cb_cred.oa_length;
77 xdrmem_create(&xdrs, msg->rm_call.cb_cred.oa_base, auth_len,XDR_DECODE);
78 buf = XDR_INLINE(&xdrs, auth_len);
80 aup->aup_time = IXDR_GET_INT32(buf);
81 str_len = (size_t)IXDR_GET_U_INT32(buf);
82 if (str_len > MAX_MACHINE_NAME) {
86 memmove(aup->aup_machname, buf, str_len);
87 aup->aup_machname[str_len] = 0;
88 str_len = RNDUP(str_len);
89 buf += str_len / sizeof (int32_t);
90 aup->aup_uid = (int)IXDR_GET_INT32(buf);
91 aup->aup_gid = (int)IXDR_GET_INT32(buf);
92 gid_len = (size_t)IXDR_GET_U_INT32(buf);
93 if (gid_len > NGRPS) {
97 aup->aup_len = gid_len;
98 for (i = 0; i < gid_len; i++) {
99 aup->aup_gids[i] = (int)IXDR_GET_INT32(buf);
102 * five is the smallest unix credentials structure -
103 * timestamp, hostname len (0), uid, gid, and gids len (0).
105 if ((5 + gid_len) * BYTES_PER_XDR_UNIT + str_len > auth_len) {
106 (void) printf("bad auth_len gid %ld str %ld auth %u\n",
107 (long)gid_len, (long)str_len, auth_len);
111 } else if (! xdr_authunix_parms(&xdrs, aup)) {
112 xdrs.x_op = XDR_FREE;
113 (void)xdr_authunix_parms(&xdrs, aup);
118 /* get the verifier */
119 if ((u_int)msg->rm_call.cb_verf.oa_length) {
120 rqst->rq_xprt->xp_verf.oa_flavor =
121 msg->rm_call.cb_verf.oa_flavor;
122 rqst->rq_xprt->xp_verf.oa_base =
123 msg->rm_call.cb_verf.oa_base;
124 rqst->rq_xprt->xp_verf.oa_length =
125 msg->rm_call.cb_verf.oa_length;
127 rqst->rq_xprt->xp_verf.oa_flavor = AUTH_NULL;
128 rqst->rq_xprt->xp_verf.oa_length = 0;
138 * Shorthand unix authenticator
139 * Looks up longhand in a cache.
143 _svcauth_short(struct svc_req *rqst, struct rpc_msg *msg)
145 return (AUTH_REJECTEDCRED);