1/*
2 * Copyright (c) 2016 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29/* $KAME: keydb.c,v 1.61 2000/03/25 07:24:13 sumikawa Exp $ */
30
31/*
32 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
33 * All rights reserved.
34 *
35 * Redistribution and use in source and binary forms, with or without
36 * modification, are permitted provided that the following conditions
37 * are met:
38 * 1. Redistributions of source code must retain the above copyright
39 * notice, this list of conditions and the following disclaimer.
40 * 2. Redistributions in binary form must reproduce the above copyright
41 * notice, this list of conditions and the following disclaimer in the
42 * documentation and/or other materials provided with the distribution.
43 * 3. Neither the name of the project nor the names of its contributors
44 * may be used to endorse or promote products derived from this software
45 * without specific prior written permission.
46 *
47 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
48 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
49 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
50 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
51 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
52 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
53 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
54 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
55 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
56 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
57 * SUCH DAMAGE.
58 */
59
60#include <sys/types.h>
61#include <sys/socket.h>
62#include <sys/param.h>
63#include <sys/systm.h>
64#include <sys/kernel.h>
65#include <sys/malloc.h>
66#include <sys/errno.h>
67#include <sys/queue.h>
68
69#include <net/if.h>
70#include <net/route.h>
71
72#include <netinet/in.h>
73
74#include <net/pfkeyv2.h>
75#include <netkey/key.h>
76#include <netkey/keydb.h>
77#include <netinet6/ipsec.h>
78
79#include <net/net_osdep.h>
80
81// static void keydb_delsecasvar(struct secasvar *); // not used
82
83/*
84 * secpolicy management
85 */
86struct secpolicy *
87keydb_newsecpolicy(void)
88{
89 LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
90
91 return kalloc_type(struct secpolicy, Z_WAITOK | Z_ZERO);
92}
93
94void
95keydb_delsecpolicy(struct secpolicy *p)
96{
97 kfree_type(struct secpolicy, p);
98}
99
100/*
101 * secashead management
102 */
103struct secashead *
104keydb_newsecashead(void)
105{
106 struct secashead *p;
107
108 LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
109
110 p = kalloc_type(struct secashead, Z_NOWAIT | Z_ZERO);
111 if (!p) {
112 lck_mtx_unlock(sadb_mutex);
113 p = kalloc_type(struct secashead, Z_WAITOK | Z_ZERO | Z_NOFAIL);
114 lck_mtx_lock(sadb_mutex);
115 }
116 for (size_t i = 0; i < ARRAY_COUNT(p->savtree); i++) {
117 LIST_INIT(&p->savtree[i]);
118 }
119 return p;
120}
121
122#if 0
123void
124keydb_delsecashead(struct secashead *p)
125{
126 kfree_type(struct secashead, p);
127}
128
129
130
131/*
132 * secasvar management (reference counted)
133 */
134struct secasvar *
135keydb_newsecasvar()
136{
137 struct secasvar *p;
138
139 LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
140
141 p = kalloc_type(struct secasvar, Z_WAITOK_ZERO_NOFAIL);
142 p->refcnt = 1;
143
144 return p;
145}
146
147void
148keydb_refsecasvar(p)
149struct secasvar *p;
150{
151 LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
152
153 p->refcnt++;
154}
155
156void
157keydb_freesecasvar(p)
158struct secasvar *p;
159{
160 LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
161
162 p->refcnt--;
163 /* negative refcnt will cause panic intentionally */
164 if (p->refcnt <= 0) {
165 keydb_delsecasvar(p);
166 }
167}
168
169static void
170keydb_delsecasvar(p)
171struct secasvar *p;
172{
173 if (p->refcnt) {
174 panic("keydb_delsecasvar called with refcnt != 0");
175 }
176
177 kfree_type(struct secasvar, p);
178}
179#endif
180
181/*
182 * secreplay management
183 */
184struct secreplay *
185keydb_newsecreplay(u_int8_t wsize)
186{
187 struct secreplay *p;
188
189 LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
190
191 p = kalloc_type(struct secreplay, Z_NOWAIT | Z_ZERO);
192 if (!p) {
193 lck_mtx_unlock(sadb_mutex);
194 p = kalloc_type(struct secreplay, Z_WAITOK | Z_ZERO | Z_NOFAIL);
195 lck_mtx_lock(sadb_mutex);
196 }
197
198 if (wsize != 0) {
199 p->wsize = wsize;
200 p->bitmap = (caddr_t)kalloc_data(wsize, Z_NOWAIT | Z_ZERO);
201 if (!p->bitmap) {
202 lck_mtx_unlock(sadb_mutex);
203 p->bitmap = (caddr_t)kalloc_data(wsize, Z_WAITOK | Z_ZERO | Z_NOFAIL);
204 lck_mtx_lock(sadb_mutex);
205 }
206 }
207 return p;
208}
209
210void
211keydb_delsecreplay(struct secreplay *p)
212{
213 if (p->bitmap) {
214 kfree_data(p->bitmap, p->wsize);
215 }
216 kfree_type(struct secreplay, p);
217}
218
219#if 0
220/* NOT USED
221 * secreg management
222 */
223struct secreg *
224keydb_newsecreg()
225{
226 return kalloc_type(struct secreg, Z_WAITOK_ZERO_NOFAIL);
227}
228
229void
230keydb_delsecreg(p)
231struct secreg *p;
232{
233 kfree_type(struct secreg, p);
234}
235#endif
236