/* * 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 */ #ifndef lint static char sccsid[] = "@(#)svc_auth.c 1.4 85/03/17 Copyr 1984 Sun Micro"; #endif /* * svc_auth.c, Server-side rpc authenticator interface. * * Copyright (C) 1984, Sun Microsystems, Inc. */ #include "types.h" #include <netinet/in.h> #include "xdr.h" #include "auth.h" #include "clnt.h" #include "rpc_msg.h" #include "svc.h" #include "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; rqst->rq_clntcred = (caddr_t)AUTH_NULL; 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); }