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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2015 Nexenta Systems, Inc. All rights reserved.
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <string.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/file.h>
#include <sys/time.h>
#include <sys/errno.h>
#include <rpcsvc/mount.h>
#include <sys/pathconf.h>
#include <sys/systeminfo.h>
#include <sys/utsname.h>
#include <arpa/inet.h>
#include <signal.h>
#include <syslog.h>
#include <locale.h>
#include <unistd.h>
#include <thread.h>
#include <netdir.h>
#include <nfs/auth.h>
#include <sharefs/share.h>
#include <alloca.h>
#include "../lib/sharetab.h"
#include "mountd.h"
static void
nfsauth_access(auth_req *argp, auth_res *result)
{
struct netbuf nbuf;
struct share *sh;
struct cln cln;
result->auth_perm = NFSAUTH_DENIED;
nbuf.len = argp->req_client.n_len;
nbuf.buf = argp->req_client.n_bytes;
if (nbuf.len == 0 || nbuf.buf == NULL)
return;
/*
* Find the export
*/
sh = findentry(argp->req_path);
if (sh == NULL) {
syslog(LOG_ERR, "%s not exported", argp->req_path);
return;
}
cln_init_lazy(&cln, argp->req_netid, &nbuf);
result->auth_perm = check_client(sh, &cln, argp->req_flavor,
argp->req_clnt_uid, argp->req_clnt_gid, argp->req_clnt_gids.len,
argp->req_clnt_gids.val, &result->auth_srv_uid,
&result->auth_srv_gid, &result->auth_srv_gids.len,
&result->auth_srv_gids.val);
sharefree(sh);
if (result->auth_perm == NFSAUTH_DENIED) {
char *host = cln_gethost(&cln);
if (host != NULL)
syslog(LOG_ERR, "%s denied access to %s", host,
argp->req_path);
}
cln_fini(&cln);
}
void
nfsauth_func(void *cookie, char *dataptr, size_t arg_size,
door_desc_t *dp, uint_t n_desc)
{
nfsauth_arg_t *ap;
nfsauth_res_t res = {0};
XDR xdrs_a;
XDR xdrs_r;
size_t rbsz;
caddr_t rbuf;
varg_t varg = {0};
/*
* Decode the inbound door data, so we can look at the cmd.
*/
xdrmem_create(&xdrs_a, dataptr, arg_size, XDR_DECODE);
if (!xdr_varg(&xdrs_a, &varg)) {
/*
* If the arguments can't be decoded, bail.
*/
if (varg.vers == V_ERROR)
syslog(LOG_ERR, gettext("Arg version mismatch"));
res.stat = NFSAUTH_DR_DECERR;
goto encres;
}
/*
* Now set the args pointer to the proper version of the args
*/
switch (varg.vers) {
case V_PROTO:
ap = &varg.arg_u.arg;
break;
/* Additional arguments versions go here */
default:
syslog(LOG_ERR, gettext("Invalid args version"));
res.stat = NFSAUTH_DR_DECERR;
goto encres;
}
/*
* Call the specified cmd
*/
switch (ap->cmd) {
case NFSAUTH_ACCESS:
nfsauth_access(&ap->areq, &res.ares);
res.stat = NFSAUTH_DR_OKAY;
break;
default:
res.stat = NFSAUTH_DR_BADCMD;
break;
}
encres:
/*
* Free space used to decode the args
*/
xdr_free(xdr_varg, (char *)&varg);
xdr_destroy(&xdrs_a);
/*
* Encode the results before passing thru door.
*/
rbsz = xdr_sizeof(xdr_nfsauth_res, &res);
if (rbsz == 0)
goto failed;
rbuf = alloca(rbsz);
xdrmem_create(&xdrs_r, rbuf, rbsz, XDR_ENCODE);
if (!xdr_nfsauth_res(&xdrs_r, &res)) {
xdr_destroy(&xdrs_r);
failed:
xdr_free(xdr_nfsauth_res, (char *)&res);
/*
* return only the status code
*/
res.stat = NFSAUTH_DR_EFAIL;
rbsz = sizeof (uint_t);
rbuf = (caddr_t)&res.stat;
goto out;
}
xdr_destroy(&xdrs_r);
xdr_free(xdr_nfsauth_res, (char *)&res);
out:
(void) door_return((char *)rbuf, rbsz, NULL, 0);
(void) door_return(NULL, 0, NULL, 0);
/* NOTREACHED */
}
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