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;
48 static void test_request_basic(sd_event *e)
52 sd_dhcp_client *client;
55 printf("* %s\n", __FUNCTION__);
57 r = sd_dhcp_client_new(&client);
62 r = sd_dhcp_client_attach_event(client, e, 0);
65 assert_se(sd_dhcp_client_set_request_option(NULL, 0) == -EINVAL);
66 assert_se(sd_dhcp_client_set_request_address(NULL, NULL) == -EINVAL);
67 assert_se(sd_dhcp_client_set_index(NULL, 0) == -EINVAL);
69 assert_se(sd_dhcp_client_set_index(client, 15) == 0);
70 assert_se(sd_dhcp_client_set_index(client, -42) == -EINVAL);
71 assert_se(sd_dhcp_client_set_index(client, -1) == 0);
73 assert_se(sd_dhcp_client_set_request_option(client,
74 DHCP_OPTION_SUBNET_MASK) == -EEXIST);
75 assert_se(sd_dhcp_client_set_request_option(client,
76 DHCP_OPTION_ROUTER) == -EEXIST);
77 assert_se(sd_dhcp_client_set_request_option(client,
78 DHCP_OPTION_HOST_NAME) == -EEXIST);
79 assert_se(sd_dhcp_client_set_request_option(client,
80 DHCP_OPTION_DOMAIN_NAME) == -EEXIST);
81 assert_se(sd_dhcp_client_set_request_option(client,
82 DHCP_OPTION_DOMAIN_NAME_SERVER)
84 assert_se(sd_dhcp_client_set_request_option(client,
85 DHCP_OPTION_NTP_SERVER) == -EEXIST);
87 assert_se(sd_dhcp_client_set_request_option(client,
88 DHCP_OPTION_PAD) == -EINVAL);
89 assert_se(sd_dhcp_client_set_request_option(client,
90 DHCP_OPTION_END) == -EINVAL);
91 assert_se(sd_dhcp_client_set_request_option(client,
92 DHCP_OPTION_MESSAGE_TYPE) == -EINVAL);
93 assert_se(sd_dhcp_client_set_request_option(client,
94 DHCP_OPTION_OVERLOAD) == -EINVAL);
95 assert_se(sd_dhcp_client_set_request_option(client,
96 DHCP_OPTION_PARAMETER_REQUEST_LIST)
99 assert_se(sd_dhcp_client_set_request_option(client, 33) == 0);
100 assert_se(sd_dhcp_client_set_request_option(client, 33) == -EEXIST);
101 assert_se(sd_dhcp_client_set_request_option(client, 44) == 0);
102 assert_se(sd_dhcp_client_set_request_option(client, 33) == -EEXIST);
105 static uint16_t client_checksum(void *buf, int len)
115 for (i = 0; i < len / 2 ; i++)
124 sum = (sum & 0xffff) + (sum >> 16);
129 static void test_checksum(void)
132 0x45, 0x00, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00,
133 0x40, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
134 0xff, 0xff, 0xff, 0xff
138 printf("* %s\n", __FUNCTION__);
140 assert_se(client_checksum(&buf, 20) == be16toh(0x78ae));
143 static int check_options(uint8_t code, uint8_t len, const uint8_t *option,
149 int dhcp_network_send_raw_socket(int s, const union sockaddr_union *link,
150 const void *packet, size_t len)
153 _cleanup_free_ DHCPPacket *discover;
154 uint16_t ip_check, udp_check;
159 size = sizeof(DHCPPacket) + 4;
160 assert_se(len > size);
162 discover = memdup(packet, len);
164 assert_se(discover->ip.ttl == IPDEFTTL);
165 assert_se(discover->ip.protocol == IPPROTO_UDP);
166 assert_se(discover->ip.saddr == INADDR_ANY);
167 assert_se(discover->ip.daddr == INADDR_BROADCAST);
168 assert_se(discover->udp.source == be16toh(DHCP_PORT_CLIENT));
169 assert_se(discover->udp.dest == be16toh(DHCP_PORT_SERVER));
171 ip_check = discover->ip.check;
173 discover->ip.ttl = 0;
174 discover->ip.check = discover->udp.len;
176 udp_check = ~client_checksum(&discover->ip.ttl, len - 8);
177 assert_se(udp_check == 0xffff);
179 discover->ip.ttl = IPDEFTTL;
180 discover->ip.check = ip_check;
182 ip_check = ~client_checksum(&discover->ip, sizeof(discover->ip));
183 assert_se(ip_check == 0xffff);
185 assert_se(discover->dhcp.xid);
186 assert_se(memcmp(discover->dhcp.chaddr,
187 &mac_addr.ether_addr_octet, 6) == 0);
189 size = len - sizeof(struct iphdr) - sizeof(struct udphdr);
191 assert_se(callback_recv);
192 callback_recv(size, &discover->dhcp);
197 int dhcp_network_bind_raw_socket(int index, union sockaddr_union *link)
199 if (socketpair(AF_UNIX, SOCK_STREAM, 0, test_fd) < 0)
205 int dhcp_network_bind_udp_socket(int index, be32_t address, uint16_t port)
210 int dhcp_network_send_udp_socket(int s, be32_t address, uint16_t port,
211 const void *packet, size_t len)
216 static int test_discover_message_verify(size_t size, struct DHCPMessage *dhcp)
220 res = dhcp_option_parse(dhcp, size, check_options, NULL);
221 assert_se(res == DHCP_DISCOVER);
224 printf(" recv DHCP Discover 0x%08x\n", be32toh(dhcp->xid));
229 static void test_discover_message(sd_event *e)
231 sd_dhcp_client *client;
235 printf("* %s\n", __FUNCTION__);
237 r = sd_dhcp_client_new(&client);
241 r = sd_dhcp_client_attach_event(client, e, 0);
244 assert_se(sd_dhcp_client_set_index(client, 42) >= 0);
245 assert_se(sd_dhcp_client_set_mac(client, &mac_addr) >= 0);
247 assert_se(sd_dhcp_client_set_request_option(client, 248) >= 0);
249 callback_recv = test_discover_message_verify;
251 res = sd_dhcp_client_start(client);
253 assert_se(res == 0 || res == -EINPROGRESS);
255 sd_event_run(e, (uint64_t) -1);
257 sd_dhcp_client_stop(client);
258 sd_dhcp_client_free(client);
263 callback_recv = NULL;
266 static uint8_t test_addr_acq_offer[] = {
267 0x45, 0x10, 0x01, 0x48, 0x00, 0x00, 0x00, 0x00,
268 0x80, 0x11, 0xb3, 0x84, 0xc0, 0xa8, 0x02, 0x01,
269 0xc0, 0xa8, 0x02, 0xbf, 0x00, 0x43, 0x00, 0x44,
270 0x01, 0x34, 0x00, 0x00, 0x02, 0x01, 0x06, 0x00,
271 0x6f, 0x95, 0x2f, 0x30, 0x00, 0x00, 0x00, 0x00,
272 0x00, 0x00, 0x00, 0x00, 0xc0, 0xa8, 0x02, 0xbf,
273 0xc0, 0xa8, 0x02, 0x01, 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 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
296 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
297 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
298 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
299 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
300 0x63, 0x82, 0x53, 0x63, 0x35, 0x01, 0x02, 0x36,
301 0x04, 0xc0, 0xa8, 0x02, 0x01, 0x33, 0x04, 0x00,
302 0x00, 0x02, 0x58, 0x01, 0x04, 0xff, 0xff, 0xff,
303 0x00, 0x2a, 0x04, 0xc0, 0xa8, 0x02, 0x01, 0x0f,
304 0x09, 0x6c, 0x61, 0x62, 0x2e, 0x69, 0x6e, 0x74,
305 0x72, 0x61, 0x03, 0x04, 0xc0, 0xa8, 0x02, 0x01,
306 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
307 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
310 static uint8_t test_addr_acq_ack[] = {
311 0x45, 0x10, 0x01, 0x48, 0x00, 0x00, 0x00, 0x00,
312 0x80, 0x11, 0xb3, 0x84, 0xc0, 0xa8, 0x02, 0x01,
313 0xc0, 0xa8, 0x02, 0xbf, 0x00, 0x43, 0x00, 0x44,
314 0x01, 0x34, 0x00, 0x00, 0x02, 0x01, 0x06, 0x00,
315 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00,
316 0x00, 0x00, 0x00, 0x00, 0xc0, 0xa8, 0x02, 0xbf,
317 0xc0, 0xa8, 0x02, 0x01, 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 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
340 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
341 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
342 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
343 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
344 0x63, 0x82, 0x53, 0x63, 0x35, 0x01, 0x05, 0x36,
345 0x04, 0xc0, 0xa8, 0x02, 0x01, 0x33, 0x04, 0x00,
346 0x00, 0x02, 0x58, 0x01, 0x04, 0xff, 0xff, 0xff,
347 0x00, 0x2a, 0x04, 0xc0, 0xa8, 0x02, 0x01, 0x0f,
348 0x09, 0x6c, 0x61, 0x62, 0x2e, 0x69, 0x6e, 0x74,
349 0x72, 0x61, 0x03, 0x04, 0xc0, 0xa8, 0x02, 0x01,
350 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
351 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
354 static void test_addr_acq_acquired(sd_dhcp_client *client, int event,
357 sd_event *e = userdata;
358 sd_dhcp_lease *lease;
362 assert_se(event == DHCP_EVENT_IP_ACQUIRE);
364 assert_se(sd_dhcp_client_get_lease(client, &lease) >= 0);
367 assert_se(sd_dhcp_lease_get_address(lease, &addr) >= 0);
368 assert_se(memcmp(&addr.s_addr, &test_addr_acq_ack[44],
369 sizeof(addr.s_addr)) == 0);
371 assert_se(sd_dhcp_lease_get_netmask(lease, &addr) >= 0);
372 assert_se(memcmp(&addr.s_addr, &test_addr_acq_ack[285],
373 sizeof(addr.s_addr)) == 0);
375 assert_se(sd_dhcp_lease_get_router(lease, &addr) >= 0);
376 assert_se(memcmp(&addr.s_addr, &test_addr_acq_ack[308],
377 sizeof(addr.s_addr)) == 0);
380 printf(" DHCP address acquired\n");
385 static int test_addr_acq_recv_request(size_t size, DHCPMessage *request)
387 uint16_t udp_check = 0;
390 res = dhcp_option_parse(request, size, check_options, NULL);
391 assert_se(res == DHCP_REQUEST);
392 assert_se(xid == request->xid);
395 printf(" recv DHCP Request 0x%08x\n", be32toh(xid));
397 memcpy(&test_addr_acq_ack[26], &udp_check, sizeof(udp_check));
398 memcpy(&test_addr_acq_ack[32], &xid, sizeof(xid));
399 memcpy(&test_addr_acq_ack[56], &mac_addr.ether_addr_octet,
402 callback_recv = NULL;
404 res = write(test_fd[1], test_addr_acq_ack,
405 sizeof(test_addr_acq_ack));
406 assert_se(res == sizeof(test_addr_acq_ack));
409 printf(" send DHCP Ack\n");
414 static int test_addr_acq_recv_discover(size_t size, DHCPMessage *discover)
416 uint16_t udp_check = 0;
419 res = dhcp_option_parse(discover, size, check_options, NULL);
420 assert_se(res == DHCP_DISCOVER);
425 printf(" recv DHCP Discover 0x%08x\n", be32toh(xid));
427 memcpy(&test_addr_acq_offer[26], &udp_check, sizeof(udp_check));
428 memcpy(&test_addr_acq_offer[32], &xid, sizeof(xid));
429 memcpy(&test_addr_acq_offer[56], &mac_addr.ether_addr_octet,
432 callback_recv = test_addr_acq_recv_request;
434 res = write(test_fd[1], test_addr_acq_offer,
435 sizeof(test_addr_acq_offer));
436 assert_se(res == sizeof(test_addr_acq_offer));
439 printf(" send DHCP Offer\n");
444 static void test_addr_acq(sd_event *e)
446 sd_dhcp_client *client;
450 printf("* %s\n", __FUNCTION__);
452 r = sd_dhcp_client_new(&client);
456 r = sd_dhcp_client_attach_event(client, e, 0);
459 assert_se(sd_dhcp_client_set_index(client, 42) >= 0);
460 assert_se(sd_dhcp_client_set_mac(client, &mac_addr) >= 0);
462 assert_se(sd_dhcp_client_set_callback(client, test_addr_acq_acquired, e)
465 callback_recv = test_addr_acq_recv_discover;
467 res = sd_dhcp_client_start(client);
468 assert_se(res == 0 || res == -EINPROGRESS);
472 sd_dhcp_client_set_callback(client, NULL, NULL);
473 sd_dhcp_client_stop(client);
474 sd_dhcp_client_free(client);
479 callback_recv = NULL;
483 int main(int argc, char *argv[])
487 assert_se(sd_event_new(&e) >= 0);
489 test_request_basic(e);
492 test_discover_message(e);