/* @(#)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 0 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 */ #ifdef CONFIG_AUTH_DES extern enum auth_stat _svcauth_des (struct svc_req *, struct rpc_msg *); /* des style */ #endif 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 */ #ifdef CONFIG_AUTH_DES { _svcauth_des } /* AUTH_DES */ #endif }; #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; }