diff options
Diffstat (limited to 'lib/libc/rpc/svc_auth.c')
| -rw-r--r-- | lib/libc/rpc/svc_auth.c | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/lib/libc/rpc/svc_auth.c b/lib/libc/rpc/svc_auth.c new file mode 100644 index 0000000..eb1a5f2 --- /dev/null +++ b/lib/libc/rpc/svc_auth.c @@ -0,0 +1,210 @@ +/* $NetBSD: svc_auth.c,v 1.12 2000/07/06 03:10:35 christos Exp $ */ + +/* + * 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 + */ +/* + * Copyright (c) 1986-1991 by Sun Microsystems Inc. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +#ident "@(#)svc_auth.c 1.16 94/04/24 SMI" +static char sccsid[] = "@(#)svc_auth.c 1.26 89/02/07 Copyr 1984 Sun Micro"; +#endif +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * svc_auth.c, Server-side rpc authenticator interface. + * + */ + +#include "namespace.h" +#include "reentrant.h" +#include <sys/types.h> +#include <rpc/rpc.h> +#include <stdlib.h> +#include "un-namespace.h" +#include "mt_misc.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) + * struct svc_req *rqst; + * struct rpc_msg *msg; + * + */ + +/* declarations to allow servers to specify new authentication flavors */ +struct authsvc { + int flavor; + enum auth_stat (*handler)(struct svc_req *, struct rpc_msg *); + struct authsvc *next; +}; +static struct authsvc *Auths = NULL; + +/* + * 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. + * + * There is an assumption that any flavour less than AUTH_NULL is + * invalid. + */ +enum auth_stat +_authenticate(rqst, msg) + struct svc_req *rqst; + struct rpc_msg *msg; +{ + int cred_flavor; + struct authsvc *asp; + enum auth_stat dummy; + +/* VARIABLES PROTECTED BY authsvc_lock: asp, Auths */ + + 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; + switch (cred_flavor) { + case AUTH_NULL: + dummy = _svcauth_null(rqst, msg); + return (dummy); + case AUTH_SYS: + dummy = _svcauth_unix(rqst, msg); + return (dummy); + case AUTH_SHORT: + dummy = _svcauth_short(rqst, msg); + return (dummy); +#ifdef DES_BUILTIN + case AUTH_DES: + dummy = _svcauth_des(rqst, msg); + return (dummy); +#endif + default: + break; + } + + /* flavor doesn't match any of the builtin types, so try new ones */ + mutex_lock(&authsvc_lock); + for (asp = Auths; asp; asp = asp->next) { + if (asp->flavor == cred_flavor) { + enum auth_stat as; + + as = (*asp->handler)(rqst, msg); + mutex_unlock(&authsvc_lock); + return (as); + } + } + mutex_unlock(&authsvc_lock); + + return (AUTH_REJECTEDCRED); +} + +/*ARGSUSED*/ +enum auth_stat +_svcauth_null(rqst, msg) + struct svc_req *rqst; + struct rpc_msg *msg; +{ + return (AUTH_OK); +} + +/* + * Allow the rpc service to register new authentication types that it is + * prepared to handle. When an authentication flavor is registered, + * the flavor is checked against already registered values. If not + * registered, then a new Auths entry is added on the list. + * + * There is no provision to delete a registration once registered. + * + * This routine returns: + * 0 if registration successful + * 1 if flavor already registered + * -1 if can't register (errno set) + */ + +int +svc_auth_reg(cred_flavor, handler) + int cred_flavor; + enum auth_stat (*handler)(struct svc_req *, struct rpc_msg *); +{ + struct authsvc *asp; + + switch (cred_flavor) { + case AUTH_NULL: + case AUTH_SYS: + case AUTH_SHORT: +#ifdef DES_BUILTIN + case AUTH_DES: +#endif + /* already registered */ + return (1); + + default: + mutex_lock(&authsvc_lock); + for (asp = Auths; asp; asp = asp->next) { + if (asp->flavor == cred_flavor) { + /* already registered */ + mutex_unlock(&authsvc_lock); + return (1); + } + } + + /* this is a new one, so go ahead and register it */ + asp = mem_alloc(sizeof (*asp)); + if (asp == NULL) { + mutex_unlock(&authsvc_lock); + return (-1); + } + asp->flavor = cred_flavor; + asp->handler = handler; + asp->next = Auths; + Auths = asp; + mutex_unlock(&authsvc_lock); + break; + } + return (0); +} |
