| /* @(#)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; |
| } |
| INTDEF(_authenticate) |
| |
| static enum auth_stat |
| _svcauth_null (struct svc_req *rqst, struct rpc_msg *msg) |
| { |
| return AUTH_OK; |
| } |