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/keydb.h> |
76 | #include <netinet6/ipsec.h> |
77 | |
78 | #include <net/net_osdep.h> |
79 | |
80 | extern lck_mtx_t *sadb_mutex; |
81 | |
82 | MALLOC_DEFINE(M_SECA, "key mgmt" , "security associations, key management" ); |
83 | |
84 | // static void keydb_delsecasvar(struct secasvar *); // not used |
85 | |
86 | /* |
87 | * secpolicy management |
88 | */ |
89 | struct secpolicy * |
90 | keydb_newsecpolicy(void) |
91 | { |
92 | struct secpolicy *p; |
93 | |
94 | LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED); |
95 | |
96 | return (struct secpolicy *)_MALLOC(sizeof(*p), M_SECA, |
97 | M_WAITOK | M_ZERO); |
98 | } |
99 | |
100 | void |
101 | keydb_delsecpolicy(struct secpolicy *p) |
102 | { |
103 | _FREE(p, M_SECA); |
104 | } |
105 | |
106 | /* |
107 | * secashead management |
108 | */ |
109 | struct secashead * |
110 | keydb_newsecashead(void) |
111 | { |
112 | struct secashead *p; |
113 | int i; |
114 | |
115 | LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED); |
116 | |
117 | p = (struct secashead *)_MALLOC(sizeof(*p), M_SECA, M_NOWAIT | M_ZERO); |
118 | if (!p) { |
119 | lck_mtx_unlock(sadb_mutex); |
120 | p = (struct secashead *)_MALLOC(sizeof(*p), M_SECA, |
121 | M_WAITOK | M_ZERO); |
122 | lck_mtx_lock(sadb_mutex); |
123 | } |
124 | if (!p) |
125 | return p; |
126 | for (i = 0; i < sizeof(p->savtree)/sizeof(p->savtree[0]); i++) |
127 | LIST_INIT(&p->savtree[i]); |
128 | return p; |
129 | } |
130 | |
131 | #if 0 |
132 | void |
133 | keydb_delsecashead(p) |
134 | struct secashead *p; |
135 | { |
136 | |
137 | _FREE(p, M_SECA); |
138 | } |
139 | |
140 | |
141 | |
142 | /* |
143 | * secasvar management (reference counted) |
144 | */ |
145 | struct secasvar * |
146 | keydb_newsecasvar() |
147 | { |
148 | struct secasvar *p; |
149 | |
150 | LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED); |
151 | |
152 | p = (struct secasvar *)_MALLOC(sizeof(*p), M_SECA, M_WAITOK); |
153 | if (!p) |
154 | return p; |
155 | bzero(p, sizeof(*p)); |
156 | p->refcnt = 1; |
157 | return p; |
158 | } |
159 | |
160 | void |
161 | keydb_refsecasvar(p) |
162 | struct secasvar *p; |
163 | { |
164 | |
165 | LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED); |
166 | |
167 | p->refcnt++; |
168 | } |
169 | |
170 | void |
171 | keydb_freesecasvar(p) |
172 | struct secasvar *p; |
173 | { |
174 | |
175 | LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED); |
176 | |
177 | p->refcnt--; |
178 | /* negative refcnt will cause panic intentionally */ |
179 | if (p->refcnt <= 0) |
180 | keydb_delsecasvar(p); |
181 | } |
182 | |
183 | static void |
184 | keydb_delsecasvar(p) |
185 | struct secasvar *p; |
186 | { |
187 | |
188 | if (p->refcnt) |
189 | panic("keydb_delsecasvar called with refcnt != 0" ); |
190 | |
191 | _FREE(p, M_SECA); |
192 | } |
193 | #endif |
194 | |
195 | /* |
196 | * secreplay management |
197 | */ |
198 | struct secreplay * |
199 | keydb_newsecreplay(size_t wsize) |
200 | { |
201 | struct secreplay *p; |
202 | |
203 | LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED); |
204 | |
205 | p = (struct secreplay *)_MALLOC(sizeof(*p), M_SECA, M_NOWAIT | M_ZERO); |
206 | if (!p) { |
207 | lck_mtx_unlock(sadb_mutex); |
208 | p = (struct secreplay *)_MALLOC(sizeof(*p), M_SECA, |
209 | M_WAITOK | M_ZERO); |
210 | lck_mtx_lock(sadb_mutex); |
211 | } |
212 | if (!p) |
213 | return p; |
214 | |
215 | if (wsize != 0) { |
216 | p->bitmap = (caddr_t)_MALLOC(wsize, M_SECA, M_NOWAIT | M_ZERO); |
217 | if (!p->bitmap) { |
218 | lck_mtx_unlock(sadb_mutex); |
219 | p->bitmap = (caddr_t)_MALLOC(wsize, M_SECA, |
220 | M_WAITOK | M_ZERO); |
221 | lck_mtx_lock(sadb_mutex); |
222 | if (!p->bitmap) { |
223 | _FREE(p, M_SECA); |
224 | return NULL; |
225 | } |
226 | } |
227 | } |
228 | p->wsize = wsize; |
229 | return p; |
230 | } |
231 | |
232 | void |
233 | keydb_delsecreplay(struct secreplay *p) |
234 | { |
235 | if (p->bitmap) |
236 | _FREE(p->bitmap, M_SECA); |
237 | _FREE(p, M_SECA); |
238 | } |
239 | |
240 | #if 0 |
241 | /* NOT USED |
242 | * secreg management |
243 | */ |
244 | struct secreg * |
245 | keydb_newsecreg() |
246 | { |
247 | struct secreg *p; |
248 | |
249 | p = (struct secreg *)_MALLOC(sizeof(*p), M_SECA, M_WAITOK); |
250 | if (p) |
251 | bzero(p, sizeof(*p)); |
252 | return p; |
253 | } |
254 | |
255 | void |
256 | keydb_delsecreg(p) |
257 | struct secreg *p; |
258 | { |
259 | |
260 | _FREE(p, M_SECA); |
261 | } |
262 | #endif |
263 | |