1 /*-
2 * Copyright (c) 2007 Bjoern A. Zeeb
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR, NCIRCLE NETWORK SECURITY,
18 * INC., OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
19 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
20 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
22 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
23 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
24 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29 /*
30 * Confirm that privilege is required to open a pfkey socket, and that this
31 * is not allowed in jail.
32 */
33
34 #include <sys/types.h>
35 #include <sys/socket.h>
36 #include <net/pfkeyv2.h>
37 #include <netinet/in.h>
38 #include <netipsec/ipsec.h>
39
40 #include <err.h>
41 #include <errno.h>
42 #include <stdlib.h>
43 #include <unistd.h>
44
45 #include "main.h"
46
47 static char policy_bypass[] = "in bypass";
48 static char policy_entrust[] = "in entrust";
49 static char *bypassbuf = NULL;
50 static char *entrustbuf = NULL;
51 static int sd = -1;
52
53
54 static int
priv_netinet_ipsec_policy_bypass_setup_af(int asroot,int injail,struct test * test,int af)55 priv_netinet_ipsec_policy_bypass_setup_af(int asroot, int injail,
56 struct test *test, int af)
57 {
58
59 bypassbuf = ipsec_set_policy(policy_bypass, sizeof(policy_bypass) - 1);
60 if (bypassbuf == NULL) {
61 warn("%s: ipsec_set_policy(NULL)", __func__);
62 return (-1);
63 }
64 switch (af) {
65 case AF_INET:
66 sd = socket(AF_INET, SOCK_DGRAM, 0);
67 if (sd < 0) {
68 warn("%s: socket4", __func__);
69 return (-1);
70 }
71 break;
72 #ifdef INET6
73 case AF_INET6:
74 sd = socket(AF_INET6, SOCK_DGRAM, 0);
75 if (sd < 0) {
76 warn("%s: socket6", __func__);
77 return (-1);
78 }
79 break;
80 #endif
81 default:
82 warnx("%s: unexpected address family", __func__);
83 return (-1);
84 }
85 return (0);
86 }
87
88 int
priv_netinet_ipsec_policy4_bypass_setup(int asroot,int injail,struct test * test)89 priv_netinet_ipsec_policy4_bypass_setup(int asroot, int injail,
90 struct test *test)
91 {
92
93 return (priv_netinet_ipsec_policy_bypass_setup_af(asroot, injail, test,
94 AF_INET));
95 }
96
97 #ifdef INET6
98 int
priv_netinet_ipsec_policy6_bypass_setup(int asroot,int injail,struct test * test)99 priv_netinet_ipsec_policy6_bypass_setup(int asroot, int injail,
100 struct test *test)
101 {
102
103 return (priv_netinet_ipsec_policy_bypass_setup_af(asroot, injail, test,
104 AF_INET6));
105 }
106 #endif
107
108
109 static int
priv_netinet_ipsec_policy_entrust_setup_af(int asroot,int injail,struct test * test,int af)110 priv_netinet_ipsec_policy_entrust_setup_af(int asroot, int injail,
111 struct test *test, int af)
112 {
113
114 entrustbuf = ipsec_set_policy(policy_entrust, sizeof(policy_entrust)-1);
115 if (entrustbuf == NULL) {
116 warn("%s: ipsec_set_policy(NULL)", __func__);
117 return (-1);
118 }
119 switch (af) {
120 case AF_INET:
121 sd = socket(AF_INET, SOCK_DGRAM, 0);
122 if (sd < 0) {
123 warn("%s: socket4", __func__);
124 return (-1);
125 }
126 break;
127 #ifdef INET6
128 case AF_INET6:
129 sd = socket(AF_INET6, SOCK_DGRAM, 0);
130 if (sd < 0) {
131 warn("%s: socket6", __func__);
132 return (-1);
133 }
134 break;
135 #endif
136 default:
137 warnx("%s: unexpected address family", __func__);
138 return (-1);
139 }
140 return (0);
141 }
142
143 int
priv_netinet_ipsec_policy4_entrust_setup(int asroot,int injail,struct test * test)144 priv_netinet_ipsec_policy4_entrust_setup(int asroot, int injail,
145 struct test *test)
146 {
147
148 return (priv_netinet_ipsec_policy_entrust_setup_af(asroot, injail, test,
149 AF_INET));
150 }
151
152 #ifdef INET6
153 int
priv_netinet_ipsec_policy6_entrust_setup(int asroot,int injail,struct test * test)154 priv_netinet_ipsec_policy6_entrust_setup(int asroot, int injail,
155 struct test *test)
156 {
157
158 return (priv_netinet_ipsec_policy_entrust_setup_af(asroot, injail, test,
159 AF_INET6));
160 }
161 #endif
162
163 void
priv_netinet_ipsec_pfkey(int asroot,int injail,struct test * test)164 priv_netinet_ipsec_pfkey(int asroot, int injail, struct test *test)
165 {
166 int error, fd;
167
168 fd = socket(PF_KEY, SOCK_RAW, PF_KEY_V2);
169 if (fd < 0)
170 error = -1;
171 else
172 error = 0;
173 /*
174 * The injail checks are not really priv checks but making sure
175 * sys/kern/uipc_socket.c:socreate cred checks are working correctly.
176 */
177 if (asroot && injail)
178 expect("priv_netinet_ipsec_pfkey(asroot, injail)", error,
179 -1, EPROTONOSUPPORT);
180 if (asroot && !injail)
181 expect("priv_netinet_ipsec_pfkey(asroot, !injail)", error,
182 0, 0);
183 if (!asroot && injail)
184 expect("priv_netinet_ipsec_pfkey(!asroot, injail)", error,
185 -1, EPROTONOSUPPORT);
186 if (!asroot && !injail)
187 expect("priv_netinet_ipsec_pfkey(!asroot, !injail)", error,
188 -1, EPERM);
189 if (fd >= 0)
190 (void)close(fd);
191 }
192
193
194 static void
priv_netinet_ipsec_policy_bypass_af(int asroot,int injail,struct test * test,int af)195 priv_netinet_ipsec_policy_bypass_af(int asroot, int injail, struct test *test,
196 int af)
197 {
198 int error, level, optname;
199
200 switch (af) {
201 case AF_INET:
202 level = IPPROTO_IP;
203 optname = IP_IPSEC_POLICY;
204 break;
205 #ifdef INET6
206 case AF_INET6:
207 level = IPPROTO_IPV6;
208 optname = IPV6_IPSEC_POLICY;
209 break;
210 #endif
211 default:
212 warnx("%s: unexpected address family", __func__);
213 return;
214 }
215 error = setsockopt(sd, level, optname,
216 bypassbuf, ipsec_get_policylen(bypassbuf));
217 if (asroot && injail)
218 expect("priv_netinet_ipsec_policy_bypass(asroot, injail)",
219 error, -1, EACCES); /* see ipsec_set_policy */
220 if (asroot && !injail)
221 expect("priv_netinet_ipsec_policy_bypass(asroot, !injail)",
222 error, 0, 0);
223 if (!asroot && injail)
224 expect("priv_netinet_ipsec_policy_bypass(!asroot, injail)",
225 error, -1, EACCES); /* see ipsec_set_policy */
226 if (!asroot && !injail)
227 expect("priv_netinet_ipsec_policy_bypass(!asroot, !injail)",
228 error, -1, EACCES); /* see ipsec_set_policy */
229 }
230
231 void
priv_netinet_ipsec_policy4_bypass(int asroot,int injail,struct test * test)232 priv_netinet_ipsec_policy4_bypass(int asroot, int injail, struct test *test)
233 {
234
235 priv_netinet_ipsec_policy_bypass_af(asroot, injail, test, AF_INET);
236 }
237
238 #ifdef INET6
239 void
priv_netinet_ipsec_policy6_bypass(int asroot,int injail,struct test * test)240 priv_netinet_ipsec_policy6_bypass(int asroot, int injail, struct test *test)
241 {
242
243 priv_netinet_ipsec_policy_bypass_af(asroot, injail, test, AF_INET6);
244 }
245 #endif
246
247 static void
priv_netinet_ipsec_policy_entrust_af(int asroot,int injail,struct test * test,int af)248 priv_netinet_ipsec_policy_entrust_af(int asroot, int injail, struct test *test,
249 int af)
250 {
251 int error, level, optname;
252
253 switch (af) {
254 case AF_INET:
255 level = IPPROTO_IP;
256 optname = IP_IPSEC_POLICY;
257 break;
258 #ifdef INET6
259 case AF_INET6:
260 level = IPPROTO_IPV6;
261 optname = IPV6_IPSEC_POLICY;
262 break;
263 #endif
264 default:
265 warnx("%s: unexpected address family", __func__);
266 return;
267 }
268 error = setsockopt(sd, level, optname,
269 entrustbuf, ipsec_get_policylen(entrustbuf));
270 if (asroot && injail)
271 expect("priv_netinet_ipsec_policy_entrust(asroot, injail)",
272 error, 0, 0); /* XXX ipsec_set_policy */
273 if (asroot && !injail)
274 expect("priv_netinet_ipsec_policy_entrust(asroot, !injail)",
275 error, 0, 0);
276 if (!asroot && injail)
277 expect("priv_netinet_ipsec_policy_entrust(!asroot, injail)",
278 error, 0, 0); /* XXX ipsec_set_policy */
279 if (!asroot && !injail)
280 expect("priv_netinet_ipsec_policy_entrust(!asroot, !injail)",
281 error, 0, 0); /* XXX ipsec_set_policy */
282 }
283
284 void
priv_netinet_ipsec_policy4_entrust(int asroot,int injail,struct test * test)285 priv_netinet_ipsec_policy4_entrust(int asroot, int injail, struct test *test)
286 {
287
288 priv_netinet_ipsec_policy_entrust_af(asroot, injail, test, AF_INET);
289 }
290
291 #ifdef INET6
292 void
priv_netinet_ipsec_policy6_entrust(int asroot,int injail,struct test * test)293 priv_netinet_ipsec_policy6_entrust(int asroot, int injail, struct test *test)
294 {
295
296 priv_netinet_ipsec_policy_entrust_af(asroot, injail, test, AF_INET6);
297 }
298 #endif
299
300 void
priv_netinet_ipsec_policy_bypass_cleanup(int asroot,int injail,struct test * test)301 priv_netinet_ipsec_policy_bypass_cleanup(int asroot, int injail,
302 struct test *test)
303 {
304
305 if (bypassbuf != NULL) {
306 free(bypassbuf);
307 bypassbuf = NULL;
308 }
309 if (sd >= 0) {
310 close(sd);
311 sd = -1;
312 }
313 }
314
315 void
priv_netinet_ipsec_policy_entrust_cleanup(int asroot,int injail,struct test * test)316 priv_netinet_ipsec_policy_entrust_cleanup(int asroot, int injail,
317 struct test *test)
318 {
319
320 if (entrustbuf != NULL) {
321 free(entrustbuf);
322 entrustbuf = NULL;
323 }
324 if (sd >= 0) {
325 close(sd);
326 sd = -1;
327 }
328 }
329
330