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/* @(#)svc_auth.c 2.4 88/08/15 4.0 RPCSRC */
/*
* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
* unrestricted use provided that this legend is included on all tape
* media and as a part of the software program in whole or part. Users
* may copy or modify Sun RPC without charge, but are not authorized
* to license or distribute it to anyone else except as part of a product or
* program developed by the user.
*
* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
*
* Sun RPC is provided with no support and without any obligation on the
* part of Sun Microsystems, Inc. to assist in its use, correction,
* modification or enhancement.
*
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
* OR ANY PART THEREOF.
*
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
* or profits or other special, indirect and consequential damages, even if
* Sun has been advised of the possibility of such damages.
*
* Sun Microsystems, Inc.
* 2550 Garcia Avenue
* Mountain View, California 94043
*/
#if !defined(lint) && defined(SCCSIDS)
static char sccsid[] = "@(#)svc_auth.c 1.19 87/08/11 Copyr 1984 Sun Micro";
#endif
/*
* svc_auth.c, Server-side rpc authenticator interface.
*
* Copyright (C) 1984, Sun Microsystems, Inc.
*/
#include <rpc/rpc.h>
#include <rpc/svc.h>
#include <rpc/svc_auth.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;
*
*/
static enum auth_stat _svcauth_null (struct svc_req *, struct rpc_msg *);
/* no authentication */
extern enum auth_stat _svcauth_unix (struct svc_req *, struct rpc_msg *);
/* unix style (uid, gids) */
extern enum auth_stat _svcauth_short (struct svc_req *, struct rpc_msg *);
/* short hand unix style */
extern enum auth_stat _svcauth_des (struct svc_req *, struct rpc_msg *);
/* des style */
static const struct
{
enum auth_stat (*authenticator) (struct svc_req *, struct rpc_msg *);
}
svcauthsw[] =
{
{ _svcauth_null }, /* AUTH_NULL */
{ _svcauth_unix }, /* AUTH_UNIX */
{ _svcauth_short }, /* AUTH_SHORT */
{ _svcauth_des } /* AUTH_DES */
};
#define AUTH_MAX 3 /* 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-allocated;
* 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 (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;
}
static enum auth_stat
_svcauth_null (struct svc_req *rqst, struct rpc_msg *msg)
{
return AUTH_OK;
}
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