2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3 * unrestricted use provided that this legend is included on all tape
4 * media and as a part of the software program in whole or part. Users
5 * may copy or modify Sun RPC without charge, but are not authorized
6 * to license or distribute it to anyone else except as part of a product or
7 * program developed by the user.
9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
13 * Sun RPC is provided with no support and without any obligation on the
14 * part of Sun Microsystems, Inc. to assist in its use, correction,
15 * modification or enhancement.
17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
19 * OR ANY PART THEREOF.
21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
22 * or profits or other special, indirect and consequential damages, even if
23 * Sun has been advised of the possibility of such damages.
25 * Sun Microsystems, Inc.
27 * Mountain View, California 94043
30 #if defined(LIBC_SCCS) && !defined(lint)
31 static char *rcsid = "$OpenBSD: svc_auth_unix.c,v 1.6 1998/11/22 07:38:25 deraadt Exp $";
32 #endif /* LIBC_SCCS and not lint */
36 * Handles UNIX flavor authentication parameters on the service side of rpc.
37 * There are two svc auth implementations here: AUTH_UNIX and AUTH_SHORT.
38 * _svcauth_unix does full blown unix style uid,gid+gids auth,
39 * _svcauth_short uses a shorthand auth to index into a cache of longhand auths.
40 * Note: the shorthand has been gutted for efficiency.
42 * Copyright (C) 1984, Sun Microsystems, Inc.
49 extern SVCAUTH svc_auth_none;
52 * Unix longhand authenticator
55 _svcauth_unix(rqst, msg)
56 register struct svc_req *rqst;
57 register struct rpc_msg *msg;
59 register enum auth_stat stat;
61 register struct authunix_parms *aup;
62 register int32_t *buf;
64 struct authunix_parms area_aup;
65 char area_machname[MAX_MACHINE_NAME+1];
69 u_int str_len, gid_len;
72 rqst->rq_xprt->xp_auth = &svc_auth_none;
74 area = (struct area *) rqst->rq_clntcred;
75 aup = &area->area_aup;
76 aup->aup_machname = area->area_machname;
77 aup->aup_gids = area->area_gids;
78 auth_len = (u_int)msg->rm_call.cb_cred.oa_length;
79 xdrmem_create(&xdrs, msg->rm_call.cb_cred.oa_base, auth_len,XDR_DECODE);
80 buf = XDR_INLINE(&xdrs, auth_len);
82 aup->aup_time = IXDR_GET_LONG(buf);
83 str_len = IXDR_GET_U_LONG(buf);
84 if (str_len > MAX_MACHINE_NAME) {
88 memcpy(aup->aup_machname, (caddr_t)buf, (u_int)str_len);
89 aup->aup_machname[str_len] = 0;
90 str_len = RNDUP(str_len);
91 buf += str_len / sizeof (int32_t);
92 aup->aup_uid = IXDR_GET_LONG(buf);
93 aup->aup_gid = IXDR_GET_LONG(buf);
94 gid_len = IXDR_GET_U_LONG(buf);
95 if (gid_len > NGRPS) {
99 aup->aup_len = gid_len;
100 for (i = 0; i < gid_len; i++) {
101 aup->aup_gids[i] = IXDR_GET_LONG(buf);
104 * five is the smallest unix credentials structure -
105 * timestamp, hostname len (0), uid, gid, and gids len (0).
107 if ((5 + gid_len) * BYTES_PER_XDR_UNIT + str_len > auth_len) {
108 (void) printf("bad auth_len gid %u str %u auth %u\n",
109 gid_len, str_len, auth_len);
113 } else if (! xdr_authunix_parms(&xdrs, aup)) {
114 xdrs.x_op = XDR_FREE;
115 (void)xdr_authunix_parms(&xdrs, aup);
119 rqst->rq_xprt->xp_verf.oa_flavor = AUTH_NULL;
120 rqst->rq_xprt->xp_verf.oa_length = 0;
129 * Shorthand unix authenticator
130 * Looks up longhand in a cache.
133 _svcauth_short(rqst, msg)
134 struct svc_req *rqst;
137 rqst->rq_xprt->xp_auth = &svc_auth_none;
139 return (AUTH_REJECTEDCRED);