Line data Source code
1 : /* SPDX-License-Identifier: LGPL-2.1+ */
2 : /***
3 : Copyright © 2013 Intel Corporation. All rights reserved.
4 : ***/
5 :
6 : #include <errno.h>
7 :
8 : #include "sd-dhcp-server.h"
9 : #include "sd-event.h"
10 :
11 : #include "dhcp-server-internal.h"
12 : #include "tests.h"
13 :
14 2 : static void test_pool(struct in_addr *address, unsigned size, int ret) {
15 2 : _cleanup_(sd_dhcp_server_unrefp) sd_dhcp_server *server = NULL;
16 :
17 2 : assert_se(sd_dhcp_server_new(&server, 1) >= 0);
18 :
19 2 : assert_se(sd_dhcp_server_configure_pool(server, address, 8, 0, size) == ret);
20 2 : }
21 :
22 1 : static int test_basic(sd_event *event) {
23 1 : _cleanup_(sd_dhcp_server_unrefp) sd_dhcp_server *server = NULL;
24 1 : struct in_addr address_lo = {
25 1 : .s_addr = htonl(INADDR_LOOPBACK),
26 : };
27 1 : struct in_addr address_any = {
28 1 : .s_addr = htonl(INADDR_ANY),
29 : };
30 : int r;
31 :
32 : /* attach to loopback interface */
33 1 : assert_se(sd_dhcp_server_new(&server, 1) >= 0);
34 1 : assert_se(server);
35 :
36 1 : assert_se(sd_dhcp_server_attach_event(server, event, 0) >= 0);
37 1 : assert_se(sd_dhcp_server_attach_event(server, event, 0) == -EBUSY);
38 1 : assert_se(sd_dhcp_server_get_event(server) == event);
39 1 : assert_se(sd_dhcp_server_detach_event(server) >= 0);
40 1 : assert_se(!sd_dhcp_server_get_event(server));
41 1 : assert_se(sd_dhcp_server_attach_event(server, NULL, 0) >= 0);
42 1 : assert_se(sd_dhcp_server_attach_event(server, NULL, 0) == -EBUSY);
43 :
44 1 : assert_se(sd_dhcp_server_ref(server) == server);
45 1 : assert_se(!sd_dhcp_server_unref(server));
46 :
47 1 : assert_se(sd_dhcp_server_start(server) == -EUNATCH);
48 :
49 1 : assert_se(sd_dhcp_server_configure_pool(server, &address_any, 28, 0, 0) == -EINVAL);
50 1 : assert_se(sd_dhcp_server_configure_pool(server, &address_lo, 38, 0, 0) == -ERANGE);
51 1 : assert_se(sd_dhcp_server_configure_pool(server, &address_lo, 8, 0, 0) >= 0);
52 1 : assert_se(sd_dhcp_server_configure_pool(server, &address_lo, 8, 0, 0) >= 0);
53 :
54 1 : test_pool(&address_any, 1, -EINVAL);
55 1 : test_pool(&address_lo, 1, 0);
56 :
57 1 : r = sd_dhcp_server_start(server);
58 1 : if (r == -EPERM)
59 1 : return log_info_errno(r, "sd_dhcp_server_start failed: %m");
60 0 : assert_se(r >= 0);
61 :
62 0 : assert_se(sd_dhcp_server_start(server) == -EBUSY);
63 0 : assert_se(sd_dhcp_server_stop(server) >= 0);
64 0 : assert_se(sd_dhcp_server_stop(server) >= 0);
65 0 : assert_se(sd_dhcp_server_start(server) >= 0);
66 :
67 0 : return 0;
68 : }
69 :
70 0 : static void test_message_handler(void) {
71 0 : _cleanup_(sd_dhcp_server_unrefp) sd_dhcp_server *server = NULL;
72 : struct {
73 : DHCPMessage message;
74 : struct {
75 : uint8_t code;
76 : uint8_t length;
77 : uint8_t type;
78 : } _packed_ option_type;
79 : struct {
80 : uint8_t code;
81 : uint8_t length;
82 : be32_t address;
83 : } _packed_ option_requested_ip;
84 : struct {
85 : uint8_t code;
86 : uint8_t length;
87 : be32_t address;
88 : } _packed_ option_server_id;
89 : struct {
90 : uint8_t code;
91 : uint8_t length;
92 : uint8_t id[7];
93 : } _packed_ option_client_id;
94 : uint8_t end;
95 0 : } _packed_ test = {
96 : .message.op = BOOTREQUEST,
97 : .message.htype = ARPHRD_ETHER,
98 : .message.hlen = ETHER_ADDR_LEN,
99 0 : .message.xid = htobe32(0x12345678),
100 : .message.chaddr = { 'A', 'B', 'C', 'D', 'E', 'F' },
101 : .option_type.code = SD_DHCP_OPTION_MESSAGE_TYPE,
102 : .option_type.length = 1,
103 : .option_type.type = DHCP_DISCOVER,
104 : .end = SD_DHCP_OPTION_END,
105 : };
106 0 : struct in_addr address_lo = {
107 0 : .s_addr = htonl(INADDR_LOOPBACK),
108 : };
109 :
110 0 : assert_se(sd_dhcp_server_new(&server, 1) >= 0);
111 0 : assert_se(sd_dhcp_server_configure_pool(server, &address_lo, 8, 0, 0) >= 0);
112 0 : assert_se(sd_dhcp_server_attach_event(server, NULL, 0) >= 0);
113 0 : assert_se(sd_dhcp_server_start(server) >= 0);
114 :
115 0 : assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == DHCP_OFFER);
116 :
117 0 : test.end = 0;
118 : /* TODO, shouldn't this fail? */
119 0 : assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == DHCP_OFFER);
120 0 : test.end = SD_DHCP_OPTION_END;
121 0 : assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == DHCP_OFFER);
122 :
123 0 : test.option_type.code = 0;
124 0 : test.option_type.length = 0;
125 0 : test.option_type.type = 0;
126 0 : assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 0);
127 0 : test.option_type.code = SD_DHCP_OPTION_MESSAGE_TYPE;
128 0 : test.option_type.length = 1;
129 0 : test.option_type.type = DHCP_DISCOVER;
130 0 : assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == DHCP_OFFER);
131 :
132 0 : test.message.op = 0;
133 0 : assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 0);
134 0 : test.message.op = BOOTREQUEST;
135 0 : assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == DHCP_OFFER);
136 :
137 0 : test.message.htype = 0;
138 0 : assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 0);
139 0 : test.message.htype = ARPHRD_ETHER;
140 0 : assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == DHCP_OFFER);
141 :
142 0 : test.message.hlen = 0;
143 0 : assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 0);
144 0 : test.message.hlen = ETHER_ADDR_LEN;
145 0 : assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == DHCP_OFFER);
146 :
147 0 : test.option_type.type = DHCP_REQUEST;
148 0 : assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 0);
149 0 : test.option_requested_ip.code = SD_DHCP_OPTION_REQUESTED_IP_ADDRESS;
150 0 : test.option_requested_ip.length = 4;
151 0 : test.option_requested_ip.address = htobe32(0x12345678);
152 0 : assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == DHCP_NAK);
153 0 : test.option_server_id.code = SD_DHCP_OPTION_SERVER_IDENTIFIER;
154 0 : test.option_server_id.length = 4;
155 0 : test.option_server_id.address = htobe32(INADDR_LOOPBACK);
156 0 : test.option_requested_ip.address = htobe32(INADDR_LOOPBACK + 3);
157 0 : assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == DHCP_ACK);
158 :
159 0 : test.option_server_id.address = htobe32(0x12345678);
160 0 : test.option_requested_ip.address = htobe32(INADDR_LOOPBACK + 3);
161 0 : assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 0);
162 0 : test.option_server_id.address = htobe32(INADDR_LOOPBACK);
163 0 : test.option_requested_ip.address = htobe32(INADDR_LOOPBACK + 4);
164 0 : assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 0);
165 0 : test.option_requested_ip.address = htobe32(INADDR_LOOPBACK + 3);
166 0 : assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == DHCP_ACK);
167 :
168 0 : test.option_client_id.code = SD_DHCP_OPTION_CLIENT_IDENTIFIER;
169 0 : test.option_client_id.length = 7;
170 0 : test.option_client_id.id[0] = 0x01;
171 0 : test.option_client_id.id[1] = 'A';
172 0 : test.option_client_id.id[2] = 'B';
173 0 : test.option_client_id.id[3] = 'C';
174 0 : test.option_client_id.id[4] = 'D';
175 0 : test.option_client_id.id[5] = 'E';
176 0 : test.option_client_id.id[6] = 'F';
177 0 : assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == DHCP_ACK);
178 :
179 0 : test.option_requested_ip.address = htobe32(INADDR_LOOPBACK + 30);
180 0 : assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 0);
181 0 : }
182 :
183 0 : static uint64_t client_id_hash_helper(DHCPClientId *id, uint8_t key[HASH_KEY_SIZE]) {
184 : struct siphash state;
185 :
186 0 : siphash24_init(&state, key);
187 0 : client_id_hash_func(id, &state);
188 :
189 0 : return htole64(siphash24_finalize(&state));
190 : }
191 :
192 0 : static void test_client_id_hash(void) {
193 0 : DHCPClientId a = {
194 : .length = 4,
195 0 : }, b = {
196 : .length = 4,
197 : };
198 0 : uint8_t hash_key[HASH_KEY_SIZE] = {
199 : '0', '1', '2', '3', '4', '5', '6', '7',
200 : '8', '9', 'A', 'B', 'C', 'D', 'E', 'F',
201 : };
202 :
203 0 : a.data = (uint8_t*)strdup("abcd");
204 0 : b.data = (uint8_t*)strdup("abcd");
205 :
206 0 : assert_se(client_id_compare_func(&a, &b) == 0);
207 0 : assert_se(client_id_hash_helper(&a, hash_key) == client_id_hash_helper(&b, hash_key));
208 0 : a.length = 3;
209 0 : assert_se(client_id_compare_func(&a, &b) != 0);
210 0 : a.length = 4;
211 0 : assert_se(client_id_compare_func(&a, &b) == 0);
212 0 : assert_se(client_id_hash_helper(&a, hash_key) == client_id_hash_helper(&b, hash_key));
213 :
214 0 : b.length = 3;
215 0 : assert_se(client_id_compare_func(&a, &b) != 0);
216 0 : b.length = 4;
217 0 : assert_se(client_id_compare_func(&a, &b) == 0);
218 0 : assert_se(client_id_hash_helper(&a, hash_key) == client_id_hash_helper(&b, hash_key));
219 :
220 0 : free(b.data);
221 0 : b.data = (uint8_t*)strdup("abce");
222 0 : assert_se(client_id_compare_func(&a, &b) != 0);
223 :
224 0 : free(a.data);
225 0 : free(b.data);
226 0 : }
227 :
228 1 : int main(int argc, char *argv[]) {
229 1 : _cleanup_(sd_event_unrefp) sd_event *e;
230 : int r;
231 :
232 1 : test_setup_logging(LOG_DEBUG);
233 :
234 1 : assert_se(sd_event_new(&e) >= 0);
235 :
236 1 : r = test_basic(e);
237 1 : if (r != 0)
238 1 : return log_tests_skipped("cannot start dhcp server");
239 :
240 0 : test_message_handler();
241 0 : test_client_id_hash();
242 :
243 0 : return 0;
244 : }
|
