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13870d5d7b
caused by use of an invalid kgss_gssd_handle during an upcall to the gssd daemon when it has exited. This patch seems to avoid the crashes by holding a reference count on the kgss_gssd_handle until the upcall is done. It also adds a new mutex kgss_gssd_lock used to make manipulation of kgss_gssd_handle SMP safe. Tested by: Illias A. Marinos, Herbert Poeckl Reviewed by: jhb MFC after: 2 weeks
131 lines
3.4 KiB
C
131 lines
3.4 KiB
C
/*-
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* Copyright (c) 2008 Isilon Inc http://www.isilon.com/
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* Authors: Doug Rabson <dfr@rabson.org>
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* Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/kobj.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/mutex.h>
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#include <kgssapi/gssapi.h>
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#include <kgssapi/gssapi_impl.h>
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#include "kgss_if.h"
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OM_uint32
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gss_pname_to_uid(OM_uint32 *minor_status, const gss_name_t pname,
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const gss_OID mech, uid_t *uidp)
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{
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struct pname_to_uid_res res;
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struct pname_to_uid_args args;
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enum clnt_stat stat;
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CLIENT *cl;
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*minor_status = 0;
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if (pname == GSS_C_NO_NAME)
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return (GSS_S_BAD_NAME);
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cl = kgss_gssd_client();
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if (cl == NULL)
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return (GSS_S_FAILURE);
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args.pname = pname->handle;
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args.mech = mech;
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bzero(&res, sizeof(res));
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stat = gssd_pname_to_uid_1(&args, &res, cl);
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CLNT_RELEASE(cl);
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if (stat != RPC_SUCCESS) {
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*minor_status = stat;
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return (GSS_S_FAILURE);
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}
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if (res.major_status != GSS_S_COMPLETE) {
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*minor_status = res.minor_status;
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return (res.major_status);
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}
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*uidp = res.uid;
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return (GSS_S_COMPLETE);
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}
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OM_uint32
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gss_pname_to_unix_cred(OM_uint32 *minor_status, const gss_name_t pname,
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const gss_OID mech, uid_t *uidp, gid_t *gidp,
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int *numgroups, gid_t *groups)
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{
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struct pname_to_uid_res res;
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struct pname_to_uid_args args;
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enum clnt_stat stat;
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int i, n;
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CLIENT *cl;
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*minor_status = 0;
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if (pname == GSS_C_NO_NAME)
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return (GSS_S_BAD_NAME);
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cl = kgss_gssd_client();
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if (cl == NULL)
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return (GSS_S_FAILURE);
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args.pname = pname->handle;
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args.mech = mech;
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bzero(&res, sizeof(res));
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stat = gssd_pname_to_uid_1(&args, &res, cl);
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CLNT_RELEASE(cl);
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if (stat != RPC_SUCCESS) {
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*minor_status = stat;
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return (GSS_S_FAILURE);
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}
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if (res.major_status != GSS_S_COMPLETE) {
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*minor_status = res.minor_status;
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return (res.major_status);
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}
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*uidp = res.uid;
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*gidp = res.gid;
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n = res.gidlist.gidlist_len;
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if (n > *numgroups)
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n = *numgroups;
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for (i = 0; i < n; i++)
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groups[i] = res.gidlist.gidlist_val[i];
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*numgroups = n;
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xdr_free((xdrproc_t) xdr_pname_to_uid_res, &res);
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return (GSS_S_COMPLETE);
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}
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