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[glibc.git] / sunrpc / svc_auth.c
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1 /* @(#)svc_auth.c 2.4 88/08/15 4.0 RPCSRC */
2 /*
3 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
4 * unrestricted use provided that this legend is included on all tape
5 * media and as a part of the software program in whole or part. Users
6 * may copy or modify Sun RPC without charge, but are not authorized
7 * to license or distribute it to anyone else except as part of a product or
8 * program developed by the user.
10 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
11 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
12 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
14 * Sun RPC is provided with no support and without any obligation on the
15 * part of Sun Microsystems, Inc. to assist in its use, correction,
16 * modification or enhancement.
18 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
19 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
20 * OR ANY PART THEREOF.
22 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
23 * or profits or other special, indirect and consequential damages, even if
24 * Sun has been advised of the possibility of such damages.
26 * Sun Microsystems, Inc.
27 * 2550 Garcia Avenue
28 * Mountain View, California 94043
30 #if !defined(lint) && defined(SCCSIDS)
31 static char sccsid[] = "@(#)svc_auth.c 1.19 87/08/11 Copyr 1984 Sun Micro";
32 #endif
35 * svc_auth.c, Server-side rpc authenticator interface.
37 * Copyright (C) 1984, Sun Microsystems, Inc.
40 #include <rpc/rpc.h>
41 #include <rpc/svc.h>
42 #include <rpc/svc_auth.h>
45 * svcauthsw is the bdevsw of server side authentication.
47 * Server side authenticators are called from authenticate by
48 * using the client auth struct flavor field to index into svcauthsw.
49 * The server auth flavors must implement a routine that looks
50 * like:
52 * enum auth_stat
53 * flavorx_auth(rqst, msg)
54 * register struct svc_req *rqst;
55 * register struct rpc_msg *msg;
59 static enum auth_stat _svcauth_null (struct svc_req *, struct rpc_msg *);
60 /* no authentication */
61 extern enum auth_stat _svcauth_unix (struct svc_req *, struct rpc_msg *);
62 /* unix style (uid, gids) */
63 extern enum auth_stat _svcauth_short (struct svc_req *, struct rpc_msg *);
64 /* short hand unix style */
65 extern enum auth_stat _svcauth_des (struct svc_req *, struct rpc_msg *);
66 /* des style */
68 static const struct
70 enum auth_stat (*authenticator) (struct svc_req *, struct rpc_msg *);
72 svcauthsw[] =
74 { _svcauth_null }, /* AUTH_NULL */
75 { _svcauth_unix }, /* AUTH_UNIX */
76 { _svcauth_short }, /* AUTH_SHORT */
77 { _svcauth_des } /* AUTH_DES */
79 #define AUTH_MAX 3 /* HIGHEST AUTH NUMBER */
83 * The call rpc message, msg has been obtained from the wire. The msg contains
84 * the raw form of credentials and verifiers. authenticate returns AUTH_OK
85 * if the msg is successfully authenticated. If AUTH_OK then the routine also
86 * does the following things:
87 * set rqst->rq_xprt->verf to the appropriate response verifier;
88 * sets rqst->rq_client_cred to the "cooked" form of the credentials.
90 * NB: rqst->rq_cxprt->verf must be pre-allocated;
91 * its length is set appropriately.
93 * The caller still owns and is responsible for msg->u.cmb.cred and
94 * msg->u.cmb.verf. The authentication system retains ownership of
95 * rqst->rq_client_cred, the cooked credentials.
97 * There is an assumption that any flavour less than AUTH_NULL is
98 * invalid.
100 enum auth_stat
101 _authenticate (register struct svc_req *rqst, struct rpc_msg *msg)
103 register int cred_flavor;
105 rqst->rq_cred = msg->rm_call.cb_cred;
106 rqst->rq_xprt->xp_verf.oa_flavor = _null_auth.oa_flavor;
107 rqst->rq_xprt->xp_verf.oa_length = 0;
108 cred_flavor = rqst->rq_cred.oa_flavor;
109 if ((cred_flavor <= AUTH_MAX) && (cred_flavor >= AUTH_NULL))
110 return (*(svcauthsw[cred_flavor].authenticator)) (rqst, msg);
112 return AUTH_REJECTEDCRED;
115 static enum auth_stat
116 _svcauth_null (struct svc_req *rqst, struct rpc_msg *msg)
118 return AUTH_OK;