1 #if !defined(lint) && defined(SCCSIDS)
2 static char sccsid[] = "@(#)svc_auth.c 2.1 88/08/07 4.0 RPCSRC; from 1.19 87/08/11 Copyr 1984 Sun Micro";
3 #endif
4 /*
5 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
6 * unrestricted use provided that this legend is included on all tape
7 * media and as a part of the software program in whole or part. Users
8 * may copy or modify Sun RPC without charge, but are not authorized
9 * to license or distribute it to anyone else except as part of a product or
10 * program developed by the user.
11 *
12 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
13 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
14 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
15 *
16 * Sun RPC is provided with no support and without any obligation on the
17 * part of Sun Microsystems, Inc. to assist in its use, correction,
18 * modification or enhancement.
19 *
20 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
21 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
22 * OR ANY PART THEREOF.
23 *
24 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
25 * or profits or other special, indirect and consequential damages, even if
26 * Sun has been advised of the possibility of such damages.
27 *
28 * Sun Microsystems, Inc.
29 * 2550 Garcia Avenue
30 * Mountain View, California 94043
31 */
32
33 /*
34 * svc_auth_nodes.c, Server-side rpc authenticator interface,
35 * *WITHOUT* DES authentication.
36 *
37 * Copyright (C) 1984, Sun Microsystems, Inc.
38 */
39
40 #include <rpc/rpc.h>
41
42 /*
43 * svcauthsw is the bdevsw of server side authentication.
44 *
45 * Server side authenticators are called from authenticate by
46 * using the client auth struct flavor field to index into svcauthsw.
47 * The server auth flavors must implement a routine that looks
48 * like:
49 *
50 * enum auth_stat
51 * flavorx_auth(rqst, msg)
52 * register struct svc_req *rqst;
53 * register struct rpc_msg *msg;
54 *
55 */
56
57 enum auth_stat _svcauth_null(); /* no authentication */
58 enum auth_stat _svcauth_unix(); /* unix style (uid, gids) */
59 enum auth_stat _svcauth_short(); /* short hand unix style */
60
61 static struct {
62 enum auth_stat (*authenticator)();
63 } svcauthsw[] = {
64 _svcauth_null, /* AUTH_NULL */
65 _svcauth_unix, /* AUTH_UNIX */
66 _svcauth_short, /* AUTH_SHORT */
67 };
68 #define AUTH_MAX 2 /* HIGHEST AUTH NUMBER */
69
70
71 /*
72 * The call rpc message, msg has been obtained from the wire. The msg contains
73 * the raw form of credentials and verifiers. authenticate returns AUTH_OK
74 * if the msg is successfully authenticated. If AUTH_OK then the routine also
75 * does the following things:
76 * set rqst->rq_xprt->verf to the appropriate response verifier;
77 * sets rqst->rq_client_cred to the "cooked" form of the credentials.
78 *
79 * NB: rqst->rq_cxprt->verf must be pre-alloctaed;
80 * its length is set appropriately.
81 *
82 * The caller still owns and is responsible for msg->u.cmb.cred and
83 * msg->u.cmb.verf. The authentication system retains ownership of
84 * rqst->rq_client_cred, the cooked credentials.
85 *
86 * There is an assumption that any flavour less than AUTH_NULL is
87 * invalid.
88 */
89 enum auth_stat
_authenticate(rqst,msg)90 _authenticate(rqst, msg)
91 register struct svc_req *rqst;
92 struct rpc_msg *msg;
93 {
94 register int cred_flavor;
95
96 rqst->rq_cred = msg->rm_call.cb_cred;
97 rqst->rq_xprt->xp_verf.oa_flavor = _null_auth.oa_flavor;
98 rqst->rq_xprt->xp_verf.oa_length = 0;
99 cred_flavor = rqst->rq_cred.oa_flavor;
100 if ((cred_flavor <= AUTH_MAX) && (cred_flavor >= AUTH_NULL)) {
101 return ((*(svcauthsw[cred_flavor].authenticator))(rqst, msg));
102 }
103
104 return (AUTH_REJECTEDCRED);
105 }
106
107 enum auth_stat
_svcauth_null()108 _svcauth_null(/*rqst, msg*/)
109 /*struct svc_req *rqst;
110 struct rpc_msg *msg;*/
111 {
112
113 return (AUTH_OK);
114 }
115