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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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 2003 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Kernel code to obtain client handle to gssd server
*/
#include <sys/types.h>
#include <gssapi/gssapi.h>
#include <gssapi/gssd_prot.h>
#include <gssapi/kgssapi_defs.h>
#include <sys/systm.h>
#include <sys/vnode.h>
#include <sys/uio.h>
#include <sys/pathname.h>
#define GSSD_RETRY 5
kmutex_t gssrpcb_lock;
zone_key_t gss_zone_key;
struct gss_globals {
enum clnt_stat gss_last_stat;
struct netbuf gss_netaddr;
struct knetconfig gss_config;
};
/* ARGSUSED */
void *
gss_zone_init(zoneid_t zoneid)
{
struct gss_globals *gssg;
gssg = kmem_zalloc(sizeof (*gssg), KM_SLEEP);
return (gssg);
}
/* ARGSUSED */
void
gss_zone_fini(zoneid_t zoneid, void *data)
{
struct gss_globals *gssg = data;
struct netbuf *netaddrp = &gssg->gss_netaddr;
if (netaddrp->len != 0)
kmem_free(netaddrp->buf, netaddrp->maxlen);
kmem_free(gssg, sizeof (*gssg));
}
void
killgssd_handle(CLIENT *client)
{
struct rpc_err rpcerr;
struct gss_globals *gssg;
gssg = zone_getspecific(gss_zone_key, curproc->p_zone);
CLNT_GETERR(client, &rpcerr);
gssg->gss_last_stat = rpcerr.re_status;
AUTH_DESTROY(client->cl_auth);
CLNT_DESTROY(client);
}
CLIENT *
getgssd_handle(void)
{
struct vnode *vp;
int error;
CLIENT *clnt;
enum clnt_stat stat;
struct netbuf tmpaddr;
struct gss_globals *gssg;
struct netbuf *netaddrp;
gssg = zone_getspecific(gss_zone_key, curproc->p_zone);
/*
* Cribbed from kerb_krpc.c. Really should do the config set up
* in the _init routine.
*/
if (gssg->gss_config.knc_rdev == 0) {
if ((error = lookupname("/dev/ticotsord", UIO_SYSSPACE,
FOLLOW, NULLVPP, &vp)) != 0) {
GSSLOG(1, "getgssd_handle: lookupname: %d\n", error);
return (NULL);
}
gssg->gss_config.knc_rdev = vp->v_rdev;
gssg->gss_config.knc_protofmly = loopback_name;
VN_RELE(vp);
gssg->gss_config.knc_semantics = NC_TPI_COTS_ORD;
}
/*
* Contact rpcbind to get gssd's address only
* once and re-use the address.
*/
mutex_enter(&gssrpcb_lock);
netaddrp = &gssg->gss_netaddr;
if (netaddrp->len == 0 || gssg->gss_last_stat != RPC_SUCCESS) {
if (netaddrp->buf != NULL)
kmem_free(netaddrp->buf, netaddrp->maxlen);
/* Set up netaddr to be "localhost." (strlen is 10) */
netaddrp->len = netaddrp->maxlen = 10;
netaddrp->buf = kmem_alloc(netaddrp->len, KM_SLEEP);
(void) strncpy(netaddrp->buf, "localhost.", netaddrp->len);
/* Get address of gssd from rpcbind */
stat = rpcbind_getaddr(&gssg->gss_config, GSSPROG, GSSVERS,
netaddrp);
if (stat != RPC_SUCCESS) {
kmem_free(netaddrp->buf, netaddrp->maxlen);
netaddrp->buf = NULL;
netaddrp->len = netaddrp->maxlen = 0;
mutex_exit(&gssrpcb_lock);
return (NULL);
}
}
/*
* Copy the netaddr information into a tmp location to
* be used by clnt_tli_kcreate. The purpose of this
* is for MT race condition (ie. netaddr being modified
* while it is being used.)
*/
tmpaddr.buf = kmem_zalloc(netaddrp->maxlen, KM_SLEEP);
bcopy(netaddrp->buf, tmpaddr.buf, netaddrp->maxlen);
tmpaddr.maxlen = netaddrp->maxlen;
tmpaddr.len = netaddrp->len;
mutex_exit(&gssrpcb_lock);
error = clnt_tli_kcreate(&gssg->gss_config, &tmpaddr, GSSPROG,
GSSVERS, 0, GSSD_RETRY, kcred, &clnt);
kmem_free(tmpaddr.buf, tmpaddr.maxlen);
if (error != 0) {
GSSLOG(1,
"getgssd_handle: clnt_tli_kcreate: error %d\n", error);
return (NULL);
}
return (clnt);
}
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