dcded131e1
Reviewed by: rmacklem Approved by: zml (mentor) MFC after: 2 weeks
304 lines
7.7 KiB
C
304 lines
7.7 KiB
C
/*-
|
|
* Copyright (c) 2008 Isilon Inc http://www.isilon.com/
|
|
* Authors: Doug Rabson <dfr@rabson.org>
|
|
* Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/kobj.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/module.h>
|
|
#include <sys/priv.h>
|
|
#include <sys/syscall.h>
|
|
#include <sys/sysent.h>
|
|
#include <sys/sysproto.h>
|
|
|
|
#include <kgssapi/gssapi.h>
|
|
#include <kgssapi/gssapi_impl.h>
|
|
#include <rpc/rpc.h>
|
|
#include <rpc/rpc_com.h>
|
|
#include <rpc/rpcsec_gss.h>
|
|
|
|
#include "gssd.h"
|
|
#include "kgss_if.h"
|
|
|
|
MALLOC_DEFINE(M_GSSAPI, "GSS-API", "GSS-API");
|
|
|
|
/*
|
|
* Syscall hooks
|
|
*/
|
|
static int gssd_syscall_offset = SYS_gssd_syscall;
|
|
static struct sysent gssd_syscall_prev_sysent;
|
|
MAKE_SYSENT(gssd_syscall);
|
|
static bool_t gssd_syscall_registered = FALSE;
|
|
|
|
struct kgss_mech_list kgss_mechs;
|
|
CLIENT *kgss_gssd_handle;
|
|
|
|
static void
|
|
kgss_init(void *dummy)
|
|
{
|
|
int error;
|
|
|
|
LIST_INIT(&kgss_mechs);
|
|
error = syscall_register(&gssd_syscall_offset, &gssd_syscall_sysent,
|
|
&gssd_syscall_prev_sysent);
|
|
if (error)
|
|
printf("Can't register GSSD syscall\n");
|
|
else
|
|
gssd_syscall_registered = TRUE;
|
|
}
|
|
SYSINIT(kgss_init, SI_SUB_LOCK, SI_ORDER_FIRST, kgss_init, NULL);
|
|
|
|
static void
|
|
kgss_uninit(void *dummy)
|
|
{
|
|
|
|
if (gssd_syscall_registered)
|
|
syscall_deregister(&gssd_syscall_offset,
|
|
&gssd_syscall_prev_sysent);
|
|
}
|
|
SYSUNINIT(kgss_uninit, SI_SUB_LOCK, SI_ORDER_FIRST, kgss_uninit, NULL);
|
|
|
|
int
|
|
gssd_syscall(struct thread *td, struct gssd_syscall_args *uap)
|
|
{
|
|
struct sockaddr_un sun;
|
|
struct netconfig *nconf;
|
|
char path[MAXPATHLEN];
|
|
int error;
|
|
|
|
error = priv_check(td, PRIV_NFS_DAEMON);
|
|
if (error)
|
|
return (error);
|
|
|
|
if (kgss_gssd_handle)
|
|
CLNT_DESTROY(kgss_gssd_handle);
|
|
|
|
error = copyinstr(uap->path, path, sizeof(path), NULL);
|
|
if (error)
|
|
return (error);
|
|
|
|
sun.sun_family = AF_LOCAL;
|
|
strcpy(sun.sun_path, path);
|
|
sun.sun_len = SUN_LEN(&sun);
|
|
|
|
nconf = getnetconfigent("local");
|
|
kgss_gssd_handle = clnt_reconnect_create(nconf,
|
|
(struct sockaddr *) &sun, GSSD, GSSDVERS,
|
|
RPC_MAXDATASIZE, RPC_MAXDATASIZE);
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
kgss_oid_equal(const gss_OID oid1, const gss_OID oid2)
|
|
{
|
|
|
|
if (oid1 == oid2)
|
|
return (1);
|
|
if (!oid1 || !oid2)
|
|
return (0);
|
|
if (oid1->length != oid2->length)
|
|
return (0);
|
|
if (memcmp(oid1->elements, oid2->elements, oid1->length))
|
|
return (0);
|
|
return (1);
|
|
}
|
|
|
|
void
|
|
kgss_install_mech(gss_OID mech_type, const char *name, struct kobj_class *cls)
|
|
{
|
|
struct kgss_mech *km;
|
|
|
|
km = malloc(sizeof(struct kgss_mech), M_GSSAPI, M_WAITOK);
|
|
km->km_mech_type = mech_type;
|
|
km->km_mech_name = name;
|
|
km->km_class = cls;
|
|
LIST_INSERT_HEAD(&kgss_mechs, km, km_link);
|
|
}
|
|
|
|
void
|
|
kgss_uninstall_mech(gss_OID mech_type)
|
|
{
|
|
struct kgss_mech *km;
|
|
|
|
LIST_FOREACH(km, &kgss_mechs, km_link) {
|
|
if (kgss_oid_equal(km->km_mech_type, mech_type)) {
|
|
LIST_REMOVE(km, km_link);
|
|
free(km, M_GSSAPI);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
gss_OID
|
|
kgss_find_mech_by_name(const char *name)
|
|
{
|
|
struct kgss_mech *km;
|
|
|
|
LIST_FOREACH(km, &kgss_mechs, km_link) {
|
|
if (!strcmp(km->km_mech_name, name)) {
|
|
return (km->km_mech_type);
|
|
}
|
|
}
|
|
return (GSS_C_NO_OID);
|
|
}
|
|
|
|
const char *
|
|
kgss_find_mech_by_oid(const gss_OID oid)
|
|
{
|
|
struct kgss_mech *km;
|
|
|
|
LIST_FOREACH(km, &kgss_mechs, km_link) {
|
|
if (kgss_oid_equal(km->km_mech_type, oid)) {
|
|
return (km->km_mech_name);
|
|
}
|
|
}
|
|
return (NULL);
|
|
}
|
|
|
|
gss_ctx_id_t
|
|
kgss_create_context(gss_OID mech_type)
|
|
{
|
|
struct kgss_mech *km;
|
|
gss_ctx_id_t ctx;
|
|
|
|
LIST_FOREACH(km, &kgss_mechs, km_link) {
|
|
if (kgss_oid_equal(km->km_mech_type, mech_type))
|
|
break;
|
|
}
|
|
if (!km)
|
|
return (NULL);
|
|
|
|
ctx = (gss_ctx_id_t) kobj_create(km->km_class, M_GSSAPI, M_WAITOK);
|
|
KGSS_INIT(ctx);
|
|
|
|
return (ctx);
|
|
}
|
|
|
|
void
|
|
kgss_delete_context(gss_ctx_id_t ctx, gss_buffer_t output_token)
|
|
{
|
|
|
|
KGSS_DELETE(ctx, output_token);
|
|
kobj_delete((kobj_t) ctx, M_GSSAPI);
|
|
}
|
|
|
|
OM_uint32
|
|
kgss_transfer_context(gss_ctx_id_t ctx)
|
|
{
|
|
struct export_sec_context_res res;
|
|
struct export_sec_context_args args;
|
|
enum clnt_stat stat;
|
|
OM_uint32 maj_stat;
|
|
|
|
if (!kgss_gssd_handle)
|
|
return (GSS_S_FAILURE);
|
|
|
|
args.ctx = ctx->handle;
|
|
bzero(&res, sizeof(res));
|
|
stat = gssd_export_sec_context_1(&args, &res, kgss_gssd_handle);
|
|
if (stat != RPC_SUCCESS) {
|
|
return (GSS_S_FAILURE);
|
|
}
|
|
|
|
maj_stat = KGSS_IMPORT(ctx, res.format, &res.interprocess_token);
|
|
ctx->handle = 0;
|
|
|
|
xdr_free((xdrproc_t) xdr_export_sec_context_res, &res);
|
|
|
|
return (maj_stat);
|
|
}
|
|
|
|
void
|
|
kgss_copy_buffer(const gss_buffer_t from, gss_buffer_t to)
|
|
{
|
|
to->length = from->length;
|
|
if (from->length) {
|
|
to->value = malloc(from->length, M_GSSAPI, M_WAITOK);
|
|
bcopy(from->value, to->value, from->length);
|
|
} else {
|
|
to->value = NULL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Kernel module glue
|
|
*/
|
|
static int
|
|
kgssapi_modevent(module_t mod, int type, void *data)
|
|
{
|
|
int error = 0;
|
|
|
|
switch (type) {
|
|
case MOD_LOAD:
|
|
rpc_gss_entries.rpc_gss_secfind = rpc_gss_secfind;
|
|
rpc_gss_entries.rpc_gss_secpurge = rpc_gss_secpurge;
|
|
rpc_gss_entries.rpc_gss_seccreate = rpc_gss_seccreate;
|
|
rpc_gss_entries.rpc_gss_set_defaults = rpc_gss_set_defaults;
|
|
rpc_gss_entries.rpc_gss_max_data_length =
|
|
rpc_gss_max_data_length;
|
|
rpc_gss_entries.rpc_gss_get_error = rpc_gss_get_error;
|
|
rpc_gss_entries.rpc_gss_mech_to_oid = rpc_gss_mech_to_oid;
|
|
rpc_gss_entries.rpc_gss_oid_to_mech = rpc_gss_oid_to_mech;
|
|
rpc_gss_entries.rpc_gss_qop_to_num = rpc_gss_qop_to_num;
|
|
rpc_gss_entries.rpc_gss_get_mechanisms = rpc_gss_get_mechanisms;
|
|
rpc_gss_entries.rpc_gss_get_versions = rpc_gss_get_versions;
|
|
rpc_gss_entries.rpc_gss_is_installed = rpc_gss_is_installed;
|
|
rpc_gss_entries.rpc_gss_set_svc_name = rpc_gss_set_svc_name;
|
|
rpc_gss_entries.rpc_gss_clear_svc_name = rpc_gss_clear_svc_name;
|
|
rpc_gss_entries.rpc_gss_getcred = rpc_gss_getcred;
|
|
rpc_gss_entries.rpc_gss_set_callback = rpc_gss_set_callback;
|
|
rpc_gss_entries.rpc_gss_clear_callback = rpc_gss_clear_callback;
|
|
rpc_gss_entries.rpc_gss_get_principal_name =
|
|
rpc_gss_get_principal_name;
|
|
rpc_gss_entries.rpc_gss_svc_max_data_length =
|
|
rpc_gss_svc_max_data_length;
|
|
break;
|
|
case MOD_UNLOAD:
|
|
/*
|
|
* Unloading of the kgssapi module is not currently supported.
|
|
* If somebody wants this, we would need to keep track of
|
|
* currently executing threads and make sure the count is 0.
|
|
*/
|
|
/* FALLTHROUGH */
|
|
default:
|
|
error = EOPNOTSUPP;
|
|
};
|
|
return (error);
|
|
}
|
|
static moduledata_t kgssapi_mod = {
|
|
"kgssapi",
|
|
kgssapi_modevent,
|
|
NULL,
|
|
};
|
|
DECLARE_MODULE(kgssapi, kgssapi_mod, SI_SUB_VFS, SI_ORDER_ANY);
|
|
MODULE_DEPEND(kgssapi, krpc, 1, 1, 1);
|
|
MODULE_VERSION(kgssapi, 1);
|