minix/lib/libc/rpc/svc_auth.c
Ben Gras 2fe8fb192f Full switch to clang/ELF. Drop ack. Simplify.
There is important information about booting non-ack images in
docs/UPDATING. ack/aout-format images can't be built any more, and
booting clang/ELF-format ones is a little different. Updating to the
new boot monitor is recommended.

Changes in this commit:

	. drop boot monitor -> allowing dropping ack support
	. facility to copy ELF boot files to /boot so that old boot monitor
	  can still boot fairly easily, see UPDATING
	. no more ack-format libraries -> single-case libraries
	. some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases
	. drop several ack toolchain commands, but not all support
	  commands (e.g. aal is gone but acksize is not yet).
	. a few libc files moved to netbsd libc dir
	. new /bin/date as minix date used code in libc/
	. test compile fix
	. harmonize includes
	. /usr/lib is no longer special: without ack, /usr/lib plays no
	  kind of special bootstrapping role any more and bootstrapping
	  is done exclusively through packages, so releases depend even
	  less on the state of the machine making them now.
	. rename nbsd_lib* to lib*
	. reduce mtree
2012-02-14 14:52:02 +01:00

226 lines
5.9 KiB
C

/* $NetBSD: svc_auth.c,v 1.15 2003/09/09 03:56:40 itojun 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.
*/
/* #ident "@(#)svc_auth.c 1.16 94/04/24 SMI" */
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
#if 0
static char sccsid[] = "@(#)svc_auth.c 1.26 89/02/07 Copyr 1984 Sun Micro";
#else
__RCSID("$NetBSD: svc_auth.c,v 1.15 2003/09/09 03:56:40 itojun Exp $");
#endif
#endif
/*
* svc_auth.c, Server-side rpc authenticator interface.
*
*/
#include "namespace.h"
#include "reentrant.h"
#include <sys/types.h>
#include <rpc/rpc.h>
#include <assert.h>
#include <stdlib.h>
#ifdef __weak_alias
__weak_alias(svc_auth_reg,_svc_auth_reg)
#endif
/*
* 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) __P((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;
#ifdef _REENTRANT
extern mutex_t authsvc_lock;
#endif
_DIAGASSERT(rqst != NULL);
_DIAGASSERT(msg != NULL);
/* 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);
#if 0
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) __P((struct svc_req *, struct rpc_msg *));
{
struct authsvc *asp;
#ifdef _REENTRANT
extern mutex_t authsvc_lock;
#endif
switch (cred_flavor) {
case AUTH_NULL:
case AUTH_SYS:
case AUTH_SHORT:
#if 0
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);
}