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24852172 PF |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright (C) 2017 Intel Corporation. All rights reserved. | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU Lesser General Public License as published by | |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public License | |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
18 | ***/ | |
19 | ||
20 | #include <netinet/icmp6.h> | |
21 | #include <arpa/inet.h> | |
22 | ||
23 | #include "sd-radv.h" | |
24 | ||
25 | #include "alloc-util.h" | |
26 | #include "hexdecoct.h" | |
27 | #include "icmp6-util.h" | |
28 | #include "socket-util.h" | |
29 | #include "strv.h" | |
30 | ||
31 | static struct ether_addr mac_addr = { | |
32 | .ether_addr_octet = { 0x78, 0x2b, 0xcb, 0xb3, 0x6d, 0x53 } | |
33 | }; | |
34 | ||
35 | static uint8_t advertisement[] = { | |
36 | /* ICMPv6 Router Advertisement, no checksum */ | |
37 | 0x86, 0x00, 0x00, 0x00, 0x40, 0xc0, 0x00, 0xb4, | |
38 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
39 | /* Source Link Layer Address Option */ | |
40 | 0x01, 0x01, 0x78, 0x2b, 0xcb, 0xb3, 0x6d, 0x53, | |
41 | /* Prefix Information Option */ | |
42 | 0x03, 0x04, 0x40, 0xc0, 0x00, 0x00, 0x01, 0xf4, | |
43 | 0x00, 0x00, 0x01, 0xb8, 0x00, 0x00, 0x00, 0x00, | |
44 | 0x20, 0x01, 0x0d, 0xb8, 0xde, 0xad, 0xbe, 0xef, | |
45 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
46 | /* Prefix Information Option */ | |
47 | 0x03, 0x04, 0x40, 0xc0, 0x00, 0x27, 0x8d, 0x00, | |
48 | 0x00, 0x09, 0x3a, 0x80, 0x00, 0x00, 0x00, 0x00, | |
49 | 0x20, 0x01, 0x0d, 0xb8, 0x0b, 0x16, 0xd0, 0x0d, | |
50 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
51 | /* Prefix Information Option */ | |
52 | 0x03, 0x04, 0x30, 0xc0, 0x00, 0x27, 0x8d, 0x00, | |
53 | 0x00, 0x09, 0x3a, 0x80, 0x00, 0x00, 0x00, 0x00, | |
54 | 0x20, 0x01, 0x0d, 0xb8, 0xc0, 0x01, 0x0d, 0xad, | |
55 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
06e6c805 | 56 | /* Recursive DNS Server Option */ |
24852172 PF |
57 | 0x19, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c, |
58 | 0x20, 0x01, 0x0d, 0xb8, 0xde, 0xad, 0xbe, 0xef, | |
59 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, | |
fa178dd2 | 60 | /* DNS Search List Option */ |
24852172 PF |
61 | 0x1f, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c, |
62 | 0x03, 0x6c, 0x61, 0x62, 0x05, 0x69, 0x6e, 0x74, | |
63 | 0x72, 0x61, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
64 | }; | |
65 | ||
66 | static sd_event_source *test_hangcheck; | |
67 | static bool test_stopped; | |
68 | static int test_fd[2]; | |
69 | static sd_event_source *recv_router_advertisement; | |
70 | static struct { | |
71 | struct in6_addr address; | |
72 | unsigned char prefixlen; | |
73 | uint32_t valid; | |
74 | uint32_t preferred; | |
75 | bool succesful; | |
76 | } prefix[] = { | |
77 | { { { { 0x20, 0x01, 0x0d, 0xb8, 0xde, 0xad, 0xbe, 0xef, | |
78 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 64, | |
79 | 500, 440, true }, | |
80 | { { { { 0x20, 0x01, 0x0d, 0xb8, 0x0b, 0x16, 0xd0, 0x0d, | |
81 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 64, | |
82 | /* indicate default valid and preferred lifetimes for the test code */ | |
83 | 0, 0, true }, | |
84 | { { { { 0x20, 0x01, 0x0d, 0xb8, 0x0b, 0x16, 0xd0, 0x0d, | |
85 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 58, | |
86 | 0, 0, | |
87 | /* indicate that this prefix already exists */ | |
88 | false }, | |
89 | { { { { 0x20, 0x01, 0x0d, 0xb8, 0x0b, 0x16, 0xd0, 0x0d, | |
90 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 120, | |
91 | 0, 0, | |
92 | /* indicate that this prefix already exists */ | |
93 | false }, | |
94 | { { { { 0x20, 0x01, 0x0d, 0xb8, 0x0b, 0x16, 0xd0, 0x0d, | |
95 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 12, | |
96 | 0, 0, | |
97 | /* indicate that this prefix already exists */ | |
98 | false }, | |
99 | { { { { 0x20, 0x01, 0x0d, 0xb8, 0xc0, 0x01, 0x0d, 0xad, | |
100 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 48, | |
101 | 0, 0, true }, | |
102 | { { { { 0x20, 0x01, 0x0d, 0xb8, 0xc0, 0x01, 0x0d, 0xad, | |
103 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, 60, | |
104 | 0, 0, | |
105 | /* indicate that this prefix already exists */ | |
106 | false }, | |
107 | }; | |
108 | ||
06e6c805 PF |
109 | static const struct in6_addr test_rdnss = { { { 0x20, 0x01, 0x0d, 0xb8, |
110 | 0xde, 0xad, 0xbe, 0xef, | |
111 | 0x00, 0x00, 0x00, 0x00, | |
112 | 0x00, 0x00, 0x00, 0x01 } } }; | |
fa178dd2 PF |
113 | static const char *test_dnssl[] = { "lab.intra", |
114 | NULL }; | |
06e6c805 | 115 | |
24852172 PF |
116 | static int test_rs_hangcheck(sd_event_source *s, uint64_t usec, |
117 | void *userdata) { | |
118 | assert_se(false); | |
119 | ||
120 | return 0; | |
121 | } | |
122 | ||
123 | static void test_radv_prefix(void) { | |
124 | sd_radv_prefix *p; | |
125 | ||
126 | printf("* %s\n", __FUNCTION__); | |
127 | ||
128 | assert_se(sd_radv_prefix_new(&p) >= 0); | |
129 | ||
130 | assert_se(sd_radv_prefix_set_onlink(NULL, true) < 0); | |
131 | assert_se(sd_radv_prefix_set_onlink(p, true) >= 0); | |
132 | assert_se(sd_radv_prefix_set_onlink(p, false) >= 0); | |
133 | ||
134 | assert_se(sd_radv_prefix_set_address_autoconfiguration(NULL, true) < 0); | |
135 | assert_se(sd_radv_prefix_set_address_autoconfiguration(p, true) >= 0); | |
136 | assert_se(sd_radv_prefix_set_address_autoconfiguration(p, false) >= 0); | |
137 | ||
138 | assert_se(sd_radv_prefix_set_valid_lifetime(NULL, true) < 0); | |
139 | assert_se(sd_radv_prefix_set_valid_lifetime(p, ~0) >= 0); | |
140 | assert_se(sd_radv_prefix_set_valid_lifetime(p, 42) >= 0); | |
141 | assert_se(sd_radv_prefix_set_valid_lifetime(p, 0) >= 0); | |
142 | ||
143 | assert_se(sd_radv_prefix_set_preferred_lifetime(NULL, true) < 0); | |
144 | assert_se(sd_radv_prefix_set_preferred_lifetime(p, ~0) >= 0); | |
145 | assert_se(sd_radv_prefix_set_preferred_lifetime(p, 42) >= 0); | |
146 | assert_se(sd_radv_prefix_set_preferred_lifetime(p, 0) >= 0); | |
147 | ||
148 | assert_se(sd_radv_prefix_set_prefix(NULL, NULL, 0) < 0); | |
149 | assert_se(sd_radv_prefix_set_prefix(p, NULL, 0) < 0); | |
150 | ||
151 | assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 64) >= 0); | |
152 | assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 0) < 0); | |
153 | assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 1) < 0); | |
154 | assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 2) < 0); | |
155 | assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 3) >= 0); | |
156 | assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 125) >= 0); | |
157 | assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 128) >= 0); | |
158 | assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 129) < 0); | |
159 | assert_se(sd_radv_prefix_set_prefix(p, &prefix[0].address, 255) < 0); | |
160 | ||
161 | p = sd_radv_prefix_unref(p); | |
162 | assert_se(!p); | |
163 | } | |
164 | ||
165 | static void test_radv(void) { | |
166 | sd_radv *ra; | |
167 | ||
168 | printf("* %s\n", __FUNCTION__); | |
169 | ||
170 | assert_se(sd_radv_new(&ra) >= 0); | |
171 | assert_se(ra); | |
172 | ||
173 | assert_se(sd_radv_set_ifindex(NULL, 0) < 0); | |
174 | assert_se(sd_radv_set_ifindex(ra, 0) >= 0); | |
175 | assert_se(sd_radv_set_ifindex(ra, -1) >= 0); | |
176 | assert_se(sd_radv_set_ifindex(ra, -2) < 0); | |
177 | assert_se(sd_radv_set_ifindex(ra, 42) >= 0); | |
178 | ||
179 | assert_se(sd_radv_set_mac(NULL, NULL) < 0); | |
180 | assert_se(sd_radv_set_mac(ra, NULL) >= 0); | |
181 | assert_se(sd_radv_set_mac(ra, &mac_addr) >= 0); | |
182 | ||
183 | assert_se(sd_radv_set_mtu(NULL, 0) < 0); | |
184 | assert_se(sd_radv_set_mtu(ra, 0) < 0); | |
185 | assert_se(sd_radv_set_mtu(ra, 1279) < 0); | |
186 | assert_se(sd_radv_set_mtu(ra, 1280) >= 0); | |
187 | assert_se(sd_radv_set_mtu(ra, ~0) >= 0); | |
188 | ||
189 | assert_se(sd_radv_set_hop_limit(NULL, 0) < 0); | |
190 | assert_se(sd_radv_set_hop_limit(ra, 0) >= 0); | |
191 | assert_se(sd_radv_set_hop_limit(ra, ~0) >= 0); | |
192 | ||
193 | assert_se(sd_radv_set_router_lifetime(NULL, 0) < 0); | |
194 | assert_se(sd_radv_set_router_lifetime(ra, 0) >= 0); | |
195 | assert_se(sd_radv_set_router_lifetime(ra, ~0) >= 0); | |
196 | ||
197 | assert_se(sd_radv_set_preference(NULL, 0) < 0); | |
198 | assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_LOW) >= 0); | |
199 | assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_MEDIUM) >= 0); | |
200 | assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_HIGH) >= 0); | |
201 | assert_se(sd_radv_set_preference(ra, ~0) < 0); | |
202 | ||
203 | assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_HIGH) >= 0); | |
204 | assert_se(sd_radv_set_router_lifetime(ra, 42000) >= 0); | |
205 | assert_se(sd_radv_set_router_lifetime(ra, 0) < 0); | |
206 | assert_se(sd_radv_set_preference(ra, SD_NDISC_PREFERENCE_MEDIUM) >= 0); | |
207 | assert_se(sd_radv_set_router_lifetime(ra, 0) >= 0); | |
208 | ||
209 | assert_se(sd_radv_set_managed_information(NULL, true) < 0); | |
210 | assert_se(sd_radv_set_managed_information(ra, true) >= 0); | |
211 | assert_se(sd_radv_set_managed_information(ra, false) >= 0); | |
212 | ||
213 | assert_se(sd_radv_set_other_information(NULL, true) < 0); | |
214 | assert_se(sd_radv_set_other_information(ra, true) >= 0); | |
215 | assert_se(sd_radv_set_other_information(ra, false) >= 0); | |
216 | ||
06e6c805 PF |
217 | assert_se(sd_radv_set_rdnss(NULL, 0, NULL, 0) < 0); |
218 | assert_se(sd_radv_set_rdnss(ra, 0, NULL, 0) >= 0); | |
219 | assert_se(sd_radv_set_rdnss(ra, 0, NULL, 128) < 0); | |
220 | assert_se(sd_radv_set_rdnss(ra, 600, &test_rdnss, 0) >= 0); | |
221 | assert_se(sd_radv_set_rdnss(ra, 600, &test_rdnss, 1) >= 0); | |
222 | assert_se(sd_radv_set_rdnss(ra, 0, &test_rdnss, 1) >= 0); | |
223 | assert_se(sd_radv_set_rdnss(ra, 0, NULL, 0) >= 0); | |
224 | ||
fa178dd2 PF |
225 | assert_se(sd_radv_set_dnssl(ra, 0, NULL) >= 0); |
226 | assert_se(sd_radv_set_dnssl(ra, 600, NULL) >= 0); | |
227 | assert_se(sd_radv_set_dnssl(ra, 0, (char **)test_dnssl) >= 0); | |
228 | assert_se(sd_radv_set_dnssl(ra, 600, (char **)test_dnssl) >= 0); | |
229 | ||
24852172 PF |
230 | ra = sd_radv_unref(ra); |
231 | assert_se(!ra); | |
232 | } | |
233 | ||
234 | int icmp6_bind_router_solicitation(int index) { | |
235 | return -ENOSYS; | |
236 | } | |
237 | ||
238 | int icmp6_bind_router_advertisement(int index) { | |
239 | assert_se(index == 42); | |
240 | ||
241 | return test_fd[1]; | |
242 | } | |
243 | ||
244 | int icmp6_send_router_solicitation(int s, const struct ether_addr *ether_addr) { | |
245 | ||
246 | return 0; | |
247 | } | |
248 | ||
249 | int icmp6_receive(int fd, void *iov_base, size_t iov_len, | |
250 | struct in6_addr *dst, triple_timestamp *timestamp) { | |
251 | assert_se(read (fd, iov_base, iov_len) == (ssize_t)iov_len); | |
252 | ||
253 | if (timestamp) | |
254 | triple_timestamp_get(timestamp); | |
255 | ||
256 | return 0; | |
257 | } | |
258 | ||
259 | static int radv_recv(sd_event_source *s, int fd, uint32_t revents, void *userdata) { | |
260 | sd_radv *ra = userdata; | |
fa178dd2 | 261 | unsigned char buf[168]; |
24852172 PF |
262 | size_t i; |
263 | ||
264 | read(test_fd[0], &buf, sizeof(buf)); | |
265 | ||
266 | /* router lifetime must be zero when test is stopped */ | |
267 | if (test_stopped) { | |
268 | advertisement[6] = 0x00; | |
269 | advertisement[7] = 0x00; | |
270 | } | |
271 | ||
272 | printf ("Received Router Advertisement with lifetime %u\n", | |
273 | (advertisement[6] << 8) + advertisement[7]); | |
274 | ||
275 | /* test only up to buf size, rest is not yet implemented */ | |
276 | for (i = 0; i < sizeof(buf); i++) { | |
06e6c805 PF |
277 | if (!(i % 8)) |
278 | printf("%3zd: ", i); | |
279 | ||
24852172 PF |
280 | printf("0x%02x", buf[i]); |
281 | ||
282 | assert_se(buf[i] == advertisement[i]); | |
283 | ||
284 | if ((i + 1) % 8) | |
285 | printf(", "); | |
286 | else | |
287 | printf("\n"); | |
288 | } | |
289 | ||
290 | if (test_stopped) { | |
291 | sd_event *e; | |
292 | ||
293 | e = sd_radv_get_event(ra); | |
294 | sd_event_exit(e, 0); | |
295 | ||
296 | return 0; | |
297 | } | |
298 | ||
299 | assert_se(sd_radv_stop(ra) >= 0); | |
300 | test_stopped = true; | |
301 | ||
302 | return 0; | |
303 | } | |
304 | ||
305 | static void test_ra(void) { | |
306 | sd_event *e; | |
307 | sd_radv *ra; | |
308 | usec_t time_now = now(clock_boottime_or_monotonic()); | |
309 | unsigned int i; | |
310 | ||
311 | printf("* %s\n", __FUNCTION__); | |
312 | ||
313 | assert_se(socketpair(AF_UNIX, SOCK_SEQPACKET, 0, test_fd) >= 0); | |
314 | ||
315 | assert_se(sd_event_new(&e) >= 0); | |
316 | ||
317 | assert_se(sd_radv_new(&ra) >= 0); | |
318 | assert_se(ra); | |
319 | ||
320 | assert_se(sd_radv_attach_event(ra, e, 0) >= 0); | |
321 | ||
322 | assert_se(sd_radv_set_ifindex(ra, 42) >= 0); | |
323 | assert_se(sd_radv_set_mac(ra, &mac_addr) >= 0); | |
324 | assert_se(sd_radv_set_router_lifetime(ra, 180) >= 0); | |
325 | assert_se(sd_radv_set_hop_limit(ra, 64) >= 0); | |
326 | assert_se(sd_radv_set_managed_information(ra, true) >= 0); | |
327 | assert_se(sd_radv_set_other_information(ra, true) >= 0); | |
06e6c805 | 328 | assert_se(sd_radv_set_rdnss(ra, 60, &test_rdnss, 1) >= 0); |
fa178dd2 | 329 | assert_se(sd_radv_set_dnssl(ra, 60, (char **)test_dnssl) >= 0); |
24852172 PF |
330 | |
331 | for (i = 0; i < ELEMENTSOF(prefix); i++) { | |
332 | sd_radv_prefix *p; | |
333 | ||
334 | printf("Test prefix %u\n", i); | |
335 | assert_se(sd_radv_prefix_new(&p) >= 0); | |
336 | ||
337 | assert_se(sd_radv_prefix_set_prefix(p, &prefix[i].address, | |
338 | prefix[i].prefixlen) >= 0); | |
339 | if (prefix[i].valid) | |
340 | assert_se(sd_radv_prefix_set_valid_lifetime(p, prefix[i].valid) >= 0); | |
341 | if (prefix[i].preferred) | |
342 | assert_se(sd_radv_prefix_set_preferred_lifetime(p, prefix[i].preferred) >= 0); | |
343 | ||
344 | assert_se((sd_radv_add_prefix(ra, p) >= 0) == prefix[i].succesful); | |
345 | assert_se(sd_radv_add_prefix(ra, p) < 0); | |
346 | ||
347 | p = sd_radv_prefix_unref(p); | |
348 | assert_se(!p); | |
349 | } | |
350 | ||
351 | assert_se(sd_event_add_io(e, &recv_router_advertisement, test_fd[0], | |
352 | EPOLLIN, radv_recv, ra) >= 0); | |
353 | ||
354 | assert_se(sd_event_add_time(e, &test_hangcheck, clock_boottime_or_monotonic(), | |
355 | time_now + 2 *USEC_PER_SEC, 0, | |
356 | test_rs_hangcheck, NULL) >= 0); | |
357 | ||
358 | assert_se(sd_radv_start(ra) >= 0); | |
359 | ||
360 | sd_event_loop(e); | |
361 | ||
362 | test_hangcheck = sd_event_source_unref(test_hangcheck); | |
363 | ||
364 | ra = sd_radv_unref(ra); | |
365 | assert_se(!ra); | |
366 | ||
367 | close(test_fd[0]); | |
368 | ||
369 | sd_event_unref(e); | |
370 | } | |
371 | ||
372 | int main(int argc, char *argv[]) { | |
373 | ||
374 | log_set_max_level(LOG_DEBUG); | |
375 | log_parse_environment(); | |
376 | log_open(); | |
377 | ||
378 | test_radv_prefix(); | |
379 | test_radv(); | |
380 | test_ra(); | |
381 | ||
382 | printf("* done\n"); | |
383 | return 0; | |
384 | } |