1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright (C) 2013 Intel Corporation. All rights reserved.
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
26 #include <sys/types.h>
27 #include <sys/socket.h>
31 #include "socket-util.h"
33 #include "dhcp-protocol.h"
34 #include "dhcp-internal.h"
35 #include "sd-dhcp-client.h"
37 static struct ether_addr mac_addr = {
38 .ether_addr_octet = {'A', 'B', 'C', '1', '2', '3'}
41 typedef int (*test_callback_recv_t)(size_t size, DHCPMessage *dhcp);
43 static bool verbose = false;
44 static int test_fd[2];
45 static test_callback_recv_t callback_recv;
47 static sd_event_source *test_hangcheck;
49 static int test_dhcp_hangcheck(sd_event_source *s, uint64_t usec,
52 assert_not_reached("Test case should have completed in 2 seconds");
57 static void test_request_basic(sd_event *e)
61 sd_dhcp_client *client;
64 printf("* %s\n", __FUNCTION__);
66 r = sd_dhcp_client_new(&client);
71 r = sd_dhcp_client_attach_event(client, e, 0);
74 assert_se(sd_dhcp_client_set_request_option(NULL, 0) == -EINVAL);
75 assert_se(sd_dhcp_client_set_request_address(NULL, NULL) == -EINVAL);
76 assert_se(sd_dhcp_client_set_index(NULL, 0) == -EINVAL);
78 assert_se(sd_dhcp_client_set_index(client, 15) == 0);
79 assert_se(sd_dhcp_client_set_index(client, -42) == -EINVAL);
80 assert_se(sd_dhcp_client_set_index(client, -1) == 0);
82 assert_se(sd_dhcp_client_set_request_option(client,
83 DHCP_OPTION_SUBNET_MASK) == -EEXIST);
84 assert_se(sd_dhcp_client_set_request_option(client,
85 DHCP_OPTION_ROUTER) == -EEXIST);
86 assert_se(sd_dhcp_client_set_request_option(client,
87 DHCP_OPTION_HOST_NAME) == -EEXIST);
88 assert_se(sd_dhcp_client_set_request_option(client,
89 DHCP_OPTION_DOMAIN_NAME) == -EEXIST);
90 assert_se(sd_dhcp_client_set_request_option(client,
91 DHCP_OPTION_DOMAIN_NAME_SERVER)
93 assert_se(sd_dhcp_client_set_request_option(client,
94 DHCP_OPTION_NTP_SERVER) == -EEXIST);
96 assert_se(sd_dhcp_client_set_request_option(client,
97 DHCP_OPTION_PAD) == -EINVAL);
98 assert_se(sd_dhcp_client_set_request_option(client,
99 DHCP_OPTION_END) == -EINVAL);
100 assert_se(sd_dhcp_client_set_request_option(client,
101 DHCP_OPTION_MESSAGE_TYPE) == -EINVAL);
102 assert_se(sd_dhcp_client_set_request_option(client,
103 DHCP_OPTION_OVERLOAD) == -EINVAL);
104 assert_se(sd_dhcp_client_set_request_option(client,
105 DHCP_OPTION_PARAMETER_REQUEST_LIST)
108 assert_se(sd_dhcp_client_set_request_option(client, 33) == 0);
109 assert_se(sd_dhcp_client_set_request_option(client, 33) == -EEXIST);
110 assert_se(sd_dhcp_client_set_request_option(client, 44) == 0);
111 assert_se(sd_dhcp_client_set_request_option(client, 33) == -EEXIST);
114 static void test_checksum(void)
117 0x45, 0x00, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00,
118 0x40, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
119 0xff, 0xff, 0xff, 0xff
123 printf("* %s\n", __FUNCTION__);
125 assert_se(dhcp_packet_checksum(&buf, 20) == be16toh(0x78ae));
128 static int check_options(uint8_t code, uint8_t len, const uint8_t *option,
132 case DHCP_OPTION_CLIENT_IDENTIFIER:
134 assert_se(option[0] == 0x01);
135 assert_se(memcmp(&option[1], &mac_addr, ETH_ALEN) == 0);
145 int dhcp_network_send_raw_socket(int s, const union sockaddr_union *link,
146 const void *packet, size_t len)
149 _cleanup_free_ DHCPPacket *discover;
150 uint16_t ip_check, udp_check;
155 size = sizeof(DHCPPacket) + 4;
156 assert_se(len > size);
158 discover = memdup(packet, len);
160 assert_se(discover->ip.ttl == IPDEFTTL);
161 assert_se(discover->ip.protocol == IPPROTO_UDP);
162 assert_se(discover->ip.saddr == INADDR_ANY);
163 assert_se(discover->ip.daddr == INADDR_BROADCAST);
164 assert_se(discover->udp.source == be16toh(DHCP_PORT_CLIENT));
165 assert_se(discover->udp.dest == be16toh(DHCP_PORT_SERVER));
167 ip_check = discover->ip.check;
169 discover->ip.ttl = 0;
170 discover->ip.check = discover->udp.len;
172 udp_check = ~dhcp_packet_checksum(&discover->ip.ttl, len - 8);
173 assert_se(udp_check == 0xffff);
175 discover->ip.ttl = IPDEFTTL;
176 discover->ip.check = ip_check;
178 ip_check = ~dhcp_packet_checksum(&discover->ip, sizeof(discover->ip));
179 assert_se(ip_check == 0xffff);
181 assert_se(discover->dhcp.xid);
182 assert_se(memcmp(discover->dhcp.chaddr,
183 &mac_addr.ether_addr_octet, 6) == 0);
185 size = len - sizeof(struct iphdr) - sizeof(struct udphdr);
187 assert_se(callback_recv);
188 callback_recv(size, &discover->dhcp);
193 int dhcp_network_bind_raw_socket(int index, union sockaddr_union *link)
195 if (socketpair(AF_UNIX, SOCK_STREAM, 0, test_fd) < 0)
201 int dhcp_network_bind_udp_socket(int index, be32_t address, uint16_t port)
206 int dhcp_network_send_udp_socket(int s, be32_t address, uint16_t port,
207 const void *packet, size_t len)
212 static int test_discover_message_verify(size_t size, struct DHCPMessage *dhcp)
216 res = dhcp_option_parse(dhcp, size, check_options, NULL);
217 assert_se(res == DHCP_DISCOVER);
220 printf(" recv DHCP Discover 0x%08x\n", be32toh(dhcp->xid));
225 static void test_discover_message(sd_event *e)
227 sd_dhcp_client *client;
231 printf("* %s\n", __FUNCTION__);
233 r = sd_dhcp_client_new(&client);
237 r = sd_dhcp_client_attach_event(client, e, 0);
240 assert_se(sd_dhcp_client_set_index(client, 42) >= 0);
241 assert_se(sd_dhcp_client_set_mac(client, &mac_addr) >= 0);
243 assert_se(sd_dhcp_client_set_request_option(client, 248) >= 0);
245 callback_recv = test_discover_message_verify;
247 res = sd_dhcp_client_start(client);
249 assert_se(res == 0 || res == -EINPROGRESS);
251 sd_event_run(e, (uint64_t) -1);
253 sd_dhcp_client_stop(client);
254 sd_dhcp_client_free(client);
256 test_fd[1] = safe_close(test_fd[1]);
258 callback_recv = NULL;
261 static uint8_t test_addr_acq_offer[] = {
262 0x45, 0x10, 0x01, 0x48, 0x00, 0x00, 0x00, 0x00,
263 0x80, 0x11, 0xb3, 0x84, 0xc0, 0xa8, 0x02, 0x01,
264 0xc0, 0xa8, 0x02, 0xbf, 0x00, 0x43, 0x00, 0x44,
265 0x01, 0x34, 0x00, 0x00, 0x02, 0x01, 0x06, 0x00,
266 0x6f, 0x95, 0x2f, 0x30, 0x00, 0x00, 0x00, 0x00,
267 0x00, 0x00, 0x00, 0x00, 0xc0, 0xa8, 0x02, 0xbf,
268 0xc0, 0xa8, 0x02, 0x01, 0x00, 0x00, 0x00, 0x00,
269 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
270 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
271 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
272 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
273 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
274 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
275 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
276 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
277 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
278 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
279 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
280 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
281 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
282 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
283 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
284 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
285 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
286 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
287 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
288 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
289 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
290 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
291 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
292 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
293 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
294 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
295 0x63, 0x82, 0x53, 0x63, 0x35, 0x01, 0x02, 0x36,
296 0x04, 0xc0, 0xa8, 0x02, 0x01, 0x33, 0x04, 0x00,
297 0x00, 0x02, 0x58, 0x01, 0x04, 0xff, 0xff, 0xff,
298 0x00, 0x2a, 0x04, 0xc0, 0xa8, 0x02, 0x01, 0x0f,
299 0x09, 0x6c, 0x61, 0x62, 0x2e, 0x69, 0x6e, 0x74,
300 0x72, 0x61, 0x03, 0x04, 0xc0, 0xa8, 0x02, 0x01,
301 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
302 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
305 static uint8_t test_addr_acq_ack[] = {
306 0x45, 0x10, 0x01, 0x48, 0x00, 0x00, 0x00, 0x00,
307 0x80, 0x11, 0xb3, 0x84, 0xc0, 0xa8, 0x02, 0x01,
308 0xc0, 0xa8, 0x02, 0xbf, 0x00, 0x43, 0x00, 0x44,
309 0x01, 0x34, 0x00, 0x00, 0x02, 0x01, 0x06, 0x00,
310 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00,
311 0x00, 0x00, 0x00, 0x00, 0xc0, 0xa8, 0x02, 0xbf,
312 0xc0, 0xa8, 0x02, 0x01, 0x00, 0x00, 0x00, 0x00,
313 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
314 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
315 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
316 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
317 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
318 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
319 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
320 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
321 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
322 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
323 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
324 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
325 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
326 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
327 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
328 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
329 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
330 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
331 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
332 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
333 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
334 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
335 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
336 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
337 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
338 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
339 0x63, 0x82, 0x53, 0x63, 0x35, 0x01, 0x05, 0x36,
340 0x04, 0xc0, 0xa8, 0x02, 0x01, 0x33, 0x04, 0x00,
341 0x00, 0x02, 0x58, 0x01, 0x04, 0xff, 0xff, 0xff,
342 0x00, 0x2a, 0x04, 0xc0, 0xa8, 0x02, 0x01, 0x0f,
343 0x09, 0x6c, 0x61, 0x62, 0x2e, 0x69, 0x6e, 0x74,
344 0x72, 0x61, 0x03, 0x04, 0xc0, 0xa8, 0x02, 0x01,
345 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
346 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
349 static void test_addr_acq_acquired(sd_dhcp_client *client, int event,
352 sd_event *e = userdata;
353 sd_dhcp_lease *lease;
357 assert_se(event == DHCP_EVENT_IP_ACQUIRE);
359 assert_se(sd_dhcp_client_get_lease(client, &lease) >= 0);
362 assert_se(sd_dhcp_lease_get_address(lease, &addr) >= 0);
363 assert_se(memcmp(&addr.s_addr, &test_addr_acq_ack[44],
364 sizeof(addr.s_addr)) == 0);
366 assert_se(sd_dhcp_lease_get_netmask(lease, &addr) >= 0);
367 assert_se(memcmp(&addr.s_addr, &test_addr_acq_ack[285],
368 sizeof(addr.s_addr)) == 0);
370 assert_se(sd_dhcp_lease_get_router(lease, &addr) >= 0);
371 assert_se(memcmp(&addr.s_addr, &test_addr_acq_ack[308],
372 sizeof(addr.s_addr)) == 0);
375 printf(" DHCP address acquired\n");
380 static int test_addr_acq_recv_request(size_t size, DHCPMessage *request)
382 uint16_t udp_check = 0;
383 uint8_t *msg_bytes = (uint8_t *)request;
386 res = dhcp_option_parse(request, size, check_options, NULL);
387 assert_se(res == DHCP_REQUEST);
388 assert_se(xid == request->xid);
390 assert_se(msg_bytes[size - 1] == DHCP_OPTION_END);
393 printf(" recv DHCP Request 0x%08x\n", be32toh(xid));
395 memcpy(&test_addr_acq_ack[26], &udp_check, sizeof(udp_check));
396 memcpy(&test_addr_acq_ack[32], &xid, sizeof(xid));
397 memcpy(&test_addr_acq_ack[56], &mac_addr.ether_addr_octet,
400 callback_recv = NULL;
402 res = write(test_fd[1], test_addr_acq_ack,
403 sizeof(test_addr_acq_ack));
404 assert_se(res == sizeof(test_addr_acq_ack));
407 printf(" send DHCP Ack\n");
412 static int test_addr_acq_recv_discover(size_t size, DHCPMessage *discover)
414 uint16_t udp_check = 0;
415 uint8_t *msg_bytes = (uint8_t *)discover;
418 res = dhcp_option_parse(discover, size, check_options, NULL);
419 assert_se(res == DHCP_DISCOVER);
421 assert_se(msg_bytes[size - 1] == DHCP_OPTION_END);
426 printf(" recv DHCP Discover 0x%08x\n", be32toh(xid));
428 memcpy(&test_addr_acq_offer[26], &udp_check, sizeof(udp_check));
429 memcpy(&test_addr_acq_offer[32], &xid, sizeof(xid));
430 memcpy(&test_addr_acq_offer[56], &mac_addr.ether_addr_octet,
433 callback_recv = test_addr_acq_recv_request;
435 res = write(test_fd[1], test_addr_acq_offer,
436 sizeof(test_addr_acq_offer));
437 assert_se(res == sizeof(test_addr_acq_offer));
440 printf(" send DHCP Offer\n");
445 static void test_addr_acq(sd_event *e)
447 usec_t time_now = now(CLOCK_MONOTONIC);
448 sd_dhcp_client *client;
452 printf("* %s\n", __FUNCTION__);
454 r = sd_dhcp_client_new(&client);
458 r = sd_dhcp_client_attach_event(client, e, 0);
461 assert_se(sd_dhcp_client_set_index(client, 42) >= 0);
462 assert_se(sd_dhcp_client_set_mac(client, &mac_addr) >= 0);
464 assert_se(sd_dhcp_client_set_callback(client, test_addr_acq_acquired, e)
467 callback_recv = test_addr_acq_recv_discover;
469 assert_se(sd_event_add_monotonic(e, &test_hangcheck,
470 time_now + 2 * USEC_PER_SEC, 0,
471 test_dhcp_hangcheck, NULL) >= 0);
473 res = sd_dhcp_client_start(client);
474 assert_se(res == 0 || res == -EINPROGRESS);
478 test_hangcheck = sd_event_source_unref(test_hangcheck);
480 sd_dhcp_client_set_callback(client, NULL, NULL);
481 sd_dhcp_client_stop(client);
482 sd_dhcp_client_free(client);
484 test_fd[1] = safe_close(test_fd[1]);
486 callback_recv = NULL;
490 int main(int argc, char *argv[])
494 assert_se(sd_event_new(&e) >= 0);
496 test_request_basic(e);
499 test_discover_message(e);