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- /*
- * $Id: svc_auth.c,v 4.2 1994/09/29 23:48:50 jraja Exp $
- *
- * Server-side rpc authenticator interface, *WITHOUT* DES authentication.
- *
- * Copyright © 1994 AmiTCP/IP Group,
- * Network Solutions Development Inc.
- * All rights reserved.
- */
-
- #if !defined(lint) && defined(SCCSIDS)
- static char sccsid[] = "@(#)svc_auth.c 2.1 88/08/07 4.0 RPCSRC; from 1.19 87/08/11 Copyr 1984 Sun Micro";
- #endif
-
- /*
- * Copyright (C) 1984, Sun Microsystems, Inc.
- */
-
- #include <sys/param.h>
- #include <rpc/rpc.h>
-
- /*
- * svcauthsw is the bdevsw of server side authentication.
- *
- * Server side authenticators are called from authenticate by
- * using the client auth struct flavor field to index into svcauthsw.
- * The server auth flavors must implement a routine that looks
- * like:
- *
- * enum auth_stat
- * flavorx_auth(rqst, msg)
- * register struct svc_req *rqst;
- * register struct rpc_msg *msg;
- *
- */
-
- enum auth_stat _svcauth_null(); /* no authentication */
- enum auth_stat _svcauth_unix(); /* unix style (uid, gids) */
- enum auth_stat _svcauth_short(); /* short hand unix style */
-
- static struct {
- enum auth_stat (*authenticator)(struct svc_req *, struct rpc_msg *);
- } svcauthsw[] = {
- _svcauth_null, /* AUTH_NULL */
- _svcauth_unix, /* AUTH_UNIX */
- _svcauth_short, /* AUTH_SHORT */
- };
- #define AUTH_MAX 2 /* HIGHEST AUTH NUMBER */
-
-
- /*
- * The call rpc message, msg has been obtained from the wire. The msg contains
- * the raw form of credentials and verifiers. authenticate returns AUTH_OK
- * if the msg is successfully authenticated. If AUTH_OK then the routine also
- * does the following things:
- * set rqst->rq_xprt->verf to the appropriate response verifier;
- * sets rqst->rq_client_cred to the "cooked" form of the credentials.
- *
- * NB: rqst->rq_cxprt->verf must be pre-alloctaed;
- * its length is set appropriately.
- *
- * The caller still owns and is responsible for msg->u.cmb.cred and
- * msg->u.cmb.verf. The authentication system retains ownership of
- * rqst->rq_client_cred, the cooked credentials.
- *
- * There is an assumption that any flavour less than AUTH_NULL is
- * invalid.
- */
- enum auth_stat
- _authenticate(rqst, msg)
- register struct svc_req *rqst;
- struct rpc_msg *msg;
- {
- register int cred_flavor;
-
- rqst->rq_cred = msg->rm_call.cb_cred;
- rqst->rq_xprt->xp_verf.oa_flavor = _null_auth.oa_flavor;
- rqst->rq_xprt->xp_verf.oa_length = 0;
- cred_flavor = rqst->rq_cred.oa_flavor;
- if ((cred_flavor <= AUTH_MAX) && (cred_flavor >= AUTH_NULL)) {
- return ((*(svcauthsw[cred_flavor].authenticator))(rqst, msg));
- }
-
- return (AUTH_REJECTEDCRED);
- }
-
- enum auth_stat
- _svcauth_null(struct svc_req *rqst, struct rpc_msg *msg)
- {
- return (AUTH_OK);
- }
-