2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2008 Isilon Inc http://www.isilon.com/
5 * Authors: Doug Rabson <dfr@rabson.org>
6 * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
33 #include <sys/param.h>
35 #include <sys/kernel.h>
38 #include <sys/malloc.h>
39 #include <sys/module.h>
40 #include <sys/mutex.h>
43 #include <sys/syscall.h>
44 #include <sys/sysent.h>
45 #include <sys/sysproto.h>
47 #include <kgssapi/gssapi.h>
48 #include <kgssapi/gssapi_impl.h>
50 #include <rpc/rpc_com.h>
51 #include <rpc/rpcsec_gss.h>
56 MALLOC_DEFINE(M_GSSAPI, "GSS-API", "GSS-API");
61 static struct syscall_helper_data gssd_syscalls[] = {
62 SYSCALL_INIT_HELPER(gssd_syscall),
66 struct kgss_mech_list kgss_mechs;
67 struct mtx kgss_gssd_lock;
69 KGSS_VNET_DEFINE(CLIENT *, kgss_gssd_handle) = NULL;
76 LIST_INIT(&kgss_mechs);
77 error = syscall_helper_register(gssd_syscalls, SY_THR_STATIC_KLD);
87 syscall_helper_unregister(gssd_syscalls);
91 sys_gssd_syscall(struct thread *td, struct gssd_syscall_args *uap)
93 struct sockaddr_un sun;
94 struct netconfig *nconf;
95 char path[MAXPATHLEN];
99 error = priv_check(td, PRIV_NFS_DAEMON);
103 error = copyinstr(uap->path, path, sizeof(path), NULL);
106 if (strlen(path) + 1 > sizeof(sun.sun_path))
109 if (path[0] != '\0') {
110 sun.sun_family = AF_LOCAL;
111 strlcpy(sun.sun_path, path, sizeof(sun.sun_path));
112 sun.sun_len = SUN_LEN(&sun);
114 nconf = getnetconfigent("local");
115 cl = clnt_reconnect_create(nconf,
116 (struct sockaddr *) &sun, GSSD, GSSDVERS,
117 RPC_MAXDATASIZE, RPC_MAXDATASIZE);
119 * The number of retries defaults to INT_MAX, which effectively
120 * means an infinite, uninterruptable loop. Limiting it to
121 * five retries keeps it from running forever.
126 CLNT_CONTROL(cl, CLSET_RETRIES, &retry_count);
129 * Set the timeout for an upcall to 5 minutes. The
130 * default of 25 seconds is not long enough for some
131 * gss_XXX() calls done by the gssd(8) daemon.
133 timo.tv_sec = 5 * 60;
135 CLNT_CONTROL(cl, CLSET_TIMEOUT, &timo);
140 KGSS_CURVNET_SET_QUIET(KGSS_TD_TO_VNET(curthread));
141 mtx_lock(&kgss_gssd_lock);
142 oldcl = KGSS_VNET(kgss_gssd_handle);
143 KGSS_VNET(kgss_gssd_handle) = cl;
144 mtx_unlock(&kgss_gssd_lock);
145 KGSS_CURVNET_RESTORE();
156 kgss_oid_equal(const gss_OID oid1, const gss_OID oid2)
163 if (oid1->length != oid2->length)
165 if (memcmp(oid1->elements, oid2->elements, oid1->length))
171 kgss_install_mech(gss_OID mech_type, const char *name, struct kobj_class *cls)
173 struct kgss_mech *km;
175 km = malloc(sizeof(struct kgss_mech), M_GSSAPI, M_WAITOK);
176 km->km_mech_type = mech_type;
177 km->km_mech_name = name;
179 LIST_INSERT_HEAD(&kgss_mechs, km, km_link);
183 kgss_uninstall_mech(gss_OID mech_type)
185 struct kgss_mech *km;
187 LIST_FOREACH(km, &kgss_mechs, km_link) {
188 if (kgss_oid_equal(km->km_mech_type, mech_type)) {
189 LIST_REMOVE(km, km_link);
197 kgss_find_mech_by_name(const char *name)
199 struct kgss_mech *km;
201 LIST_FOREACH(km, &kgss_mechs, km_link) {
202 if (!strcmp(km->km_mech_name, name)) {
203 return (km->km_mech_type);
206 return (GSS_C_NO_OID);
210 kgss_find_mech_by_oid(const gss_OID oid)
212 struct kgss_mech *km;
214 LIST_FOREACH(km, &kgss_mechs, km_link) {
215 if (kgss_oid_equal(km->km_mech_type, oid)) {
216 return (km->km_mech_name);
223 kgss_create_context(gss_OID mech_type)
225 struct kgss_mech *km;
228 LIST_FOREACH(km, &kgss_mechs, km_link) {
229 if (kgss_oid_equal(km->km_mech_type, mech_type))
235 ctx = (gss_ctx_id_t) kobj_create(km->km_class, M_GSSAPI, M_WAITOK);
242 kgss_delete_context(gss_ctx_id_t ctx, gss_buffer_t output_token)
245 KGSS_DELETE(ctx, output_token);
246 kobj_delete((kobj_t) ctx, M_GSSAPI);
250 kgss_transfer_context(gss_ctx_id_t ctx)
252 struct export_sec_context_res res;
253 struct export_sec_context_args args;
257 KGSS_CURVNET_SET_QUIET(KGSS_TD_TO_VNET(curthread));
258 if (!KGSS_VNET(kgss_gssd_handle)) {
259 KGSS_CURVNET_RESTORE();
260 return (GSS_S_FAILURE);
263 args.ctx = ctx->handle;
264 bzero(&res, sizeof(res));
265 stat = gssd_export_sec_context_1(&args, &res, KGSS_VNET(kgss_gssd_handle));
266 KGSS_CURVNET_RESTORE();
267 if (stat != RPC_SUCCESS) {
268 return (GSS_S_FAILURE);
271 maj_stat = KGSS_IMPORT(ctx, res.format, &res.interprocess_token);
274 xdr_free((xdrproc_t) xdr_export_sec_context_res, &res);
280 kgss_copy_buffer(const gss_buffer_t from, gss_buffer_t to)
282 to->length = from->length;
284 to->value = malloc(from->length, M_GSSAPI, M_WAITOK);
285 bcopy(from->value, to->value, from->length);
292 * Acquire the kgss_gssd_handle and return it with a reference count,
293 * if it is available.
296 kgss_gssd_client(void)
300 KGSS_CURVNET_SET_QUIET(KGSS_TD_TO_VNET(curthread));
301 mtx_lock(&kgss_gssd_lock);
302 cl = KGSS_VNET(kgss_gssd_handle);
305 mtx_unlock(&kgss_gssd_lock);
306 KGSS_CURVNET_RESTORE();
314 kgssapi_modevent(module_t mod, int type, void *data)
320 rpc_gss_entries.rpc_gss_refresh_auth = rpc_gss_refresh_auth;
321 rpc_gss_entries.rpc_gss_secfind = rpc_gss_secfind;
322 rpc_gss_entries.rpc_gss_secpurge = rpc_gss_secpurge;
323 rpc_gss_entries.rpc_gss_seccreate = rpc_gss_seccreate;
324 rpc_gss_entries.rpc_gss_set_defaults = rpc_gss_set_defaults;
325 rpc_gss_entries.rpc_gss_max_data_length =
326 rpc_gss_max_data_length;
327 rpc_gss_entries.rpc_gss_get_error = rpc_gss_get_error;
328 rpc_gss_entries.rpc_gss_mech_to_oid = rpc_gss_mech_to_oid;
329 rpc_gss_entries.rpc_gss_oid_to_mech = rpc_gss_oid_to_mech;
330 rpc_gss_entries.rpc_gss_qop_to_num = rpc_gss_qop_to_num;
331 rpc_gss_entries.rpc_gss_get_mechanisms = rpc_gss_get_mechanisms;
332 rpc_gss_entries.rpc_gss_get_versions = rpc_gss_get_versions;
333 rpc_gss_entries.rpc_gss_is_installed = rpc_gss_is_installed;
334 rpc_gss_entries.rpc_gss_set_svc_name = rpc_gss_set_svc_name;
335 rpc_gss_entries.rpc_gss_clear_svc_name = rpc_gss_clear_svc_name;
336 rpc_gss_entries.rpc_gss_getcred = rpc_gss_getcred;
337 rpc_gss_entries.rpc_gss_set_callback = rpc_gss_set_callback;
338 rpc_gss_entries.rpc_gss_clear_callback = rpc_gss_clear_callback;
339 rpc_gss_entries.rpc_gss_get_principal_name =
340 rpc_gss_get_principal_name;
341 rpc_gss_entries.rpc_gss_svc_max_data_length =
342 rpc_gss_svc_max_data_length;
343 mtx_init(&kgss_gssd_lock, "kgss_gssd_lock", NULL, MTX_DEF);
348 mtx_destroy(&kgss_gssd_lock);
350 * Unloading of the kgssapi module is not currently supported.
351 * If somebody wants this, we would need to keep track of
352 * currently executing threads and make sure the count is 0.
360 static moduledata_t kgssapi_mod = {
365 DECLARE_MODULE(kgssapi, kgssapi_mod, SI_SUB_VFS, SI_ORDER_ANY);
366 MODULE_DEPEND(kgssapi, xdr, 1, 1, 1);
367 MODULE_DEPEND(kgssapi, krpc, 1, 1, 1);
368 MODULE_VERSION(kgssapi, 1);