/* svc_auth.c - server-side rpc authenticator interface *//* Copyright 1984-2000 Wind River Systems, Inc. */#include "copyright_wrs.h"/* * Copyright (C) 1984, Sun Microsystems, Inc. * * 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 *//*modification history--------------------01d,18apr00,ham  fixed compilation warnings.01c,26may92,rrr  the tree shuffle		  -changed includes to have absolute path from h/01b,04oct91,rrr  passed through the ansification filter		  -changed includes to have absolute path from h/		  -changed copyright notice01a,26jun90,hjb  added modifications history; removed sccsid[].*/#ifndef lint/* static char sccsid[] = "@(#)svc_auth.c 1.1 86/02/03 Copyr 1984 Sun Micro"; */#endif/* * svc_auth.c, Server-side rpc authenticator interface. * */#include "rpc/rpctypes.h"#include "netinet/in.h"#include "rpc/xdr.h"#include "rpc/auth.h"#include "rpc/clnt.h"#include "rpc/rpc_msg.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; * */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)();} 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. */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) {		return ((*(svcauthsw[cred_flavor].authenticator))(rqst, msg));	}	return (AUTH_REJECTEDCRED);}enum auth_stat_svcauth_null(/*rqst, msg*/)	/*struct svc_req *rqst;	struct rpc_msg *msg;*/{	return (AUTH_OK);}