1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
/***
Copyright © 2013 Intel Corporation. All rights reserved.
***/
#include <errno.h>
#include <net/if_arp.h>
#include "sd-dhcp-server.h"
#include "sd-event.h"
#include "dhcp-server-internal.h"
#include "tests.h"
static void test_pool(struct in_addr *address, unsigned size, int ret) {
_cleanup_(sd_dhcp_server_unrefp) sd_dhcp_server *server = NULL;
assert_se(sd_dhcp_server_new(&server, 1) >= 0);
assert_se(sd_dhcp_server_configure_pool(server, address, 8, 0, size) == ret);
}
static int test_basic(sd_event *event) {
_cleanup_(sd_dhcp_server_unrefp) sd_dhcp_server *server = NULL;
struct in_addr address_lo = {
.s_addr = htobe32(INADDR_LOOPBACK),
};
struct in_addr address_any = {
.s_addr = htobe32(INADDR_ANY),
};
int r;
/* attach to loopback interface */
assert_se(sd_dhcp_server_new(&server, 1) >= 0);
assert_se(server);
assert_se(sd_dhcp_server_attach_event(server, event, 0) >= 0);
assert_se(sd_dhcp_server_attach_event(server, event, 0) == -EBUSY);
assert_se(sd_dhcp_server_get_event(server) == event);
assert_se(sd_dhcp_server_detach_event(server) >= 0);
assert_se(!sd_dhcp_server_get_event(server));
assert_se(sd_dhcp_server_attach_event(server, NULL, 0) >= 0);
assert_se(sd_dhcp_server_attach_event(server, NULL, 0) == -EBUSY);
assert_se(sd_dhcp_server_ref(server) == server);
assert_se(!sd_dhcp_server_unref(server));
assert_se(sd_dhcp_server_start(server) == -EUNATCH);
assert_se(sd_dhcp_server_configure_pool(server, &address_any, 28, 0, 0) == -EINVAL);
assert_se(sd_dhcp_server_configure_pool(server, &address_lo, 38, 0, 0) == -ERANGE);
assert_se(sd_dhcp_server_configure_pool(server, &address_lo, 8, 0, 0) >= 0);
assert_se(sd_dhcp_server_configure_pool(server, &address_lo, 8, 0, 0) >= 0);
test_pool(&address_any, 1, -EINVAL);
test_pool(&address_lo, 1, 0);
r = sd_dhcp_server_start(server);
if (r == -EPERM)
return log_info_errno(r, "sd_dhcp_server_start failed: %m");
assert_se(r >= 0);
assert_se(sd_dhcp_server_start(server) == -EBUSY);
assert_se(sd_dhcp_server_stop(server) >= 0);
assert_se(sd_dhcp_server_stop(server) >= 0);
assert_se(sd_dhcp_server_start(server) >= 0);
return 0;
}
static void test_message_handler(void) {
_cleanup_(sd_dhcp_server_unrefp) sd_dhcp_server *server = NULL;
struct {
DHCPMessage message;
struct {
uint8_t code;
uint8_t length;
uint8_t type;
} _packed_ option_type;
struct {
uint8_t code;
uint8_t length;
be32_t address;
} _packed_ option_requested_ip;
struct {
uint8_t code;
uint8_t length;
be32_t address;
} _packed_ option_server_id;
struct {
uint8_t code;
uint8_t length;
uint8_t id[7];
} _packed_ option_client_id;
uint8_t end;
} _packed_ test = {
.message.op = BOOTREQUEST,
.message.htype = ARPHRD_ETHER,
.message.hlen = ETHER_ADDR_LEN,
.message.xid = htobe32(0x12345678),
.message.chaddr = { 'A', 'B', 'C', 'D', 'E', 'F' },
.option_type.code = SD_DHCP_OPTION_MESSAGE_TYPE,
.option_type.length = 1,
.option_type.type = DHCP_DISCOVER,
.end = SD_DHCP_OPTION_END,
};
struct in_addr address_lo = {
.s_addr = htobe32(INADDR_LOOPBACK),
};
assert_se(sd_dhcp_server_new(&server, 1) >= 0);
assert_se(sd_dhcp_server_configure_pool(server, &address_lo, 8, 0, 0) >= 0);
assert_se(sd_dhcp_server_attach_event(server, NULL, 0) >= 0);
assert_se(sd_dhcp_server_start(server) >= 0);
assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == DHCP_OFFER);
test.end = 0;
/* TODO, shouldn't this fail? */
assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == DHCP_OFFER);
test.end = SD_DHCP_OPTION_END;
assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == DHCP_OFFER);
test.option_type.code = 0;
test.option_type.length = 0;
test.option_type.type = 0;
assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 0);
test.option_type.code = SD_DHCP_OPTION_MESSAGE_TYPE;
test.option_type.length = 1;
test.option_type.type = DHCP_DISCOVER;
assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == DHCP_OFFER);
test.message.op = 0;
assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 0);
test.message.op = BOOTREQUEST;
assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == DHCP_OFFER);
test.message.htype = 0;
assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 0);
test.message.htype = ARPHRD_ETHER;
assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == DHCP_OFFER);
test.message.hlen = 0;
assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 0);
test.message.hlen = ETHER_ADDR_LEN;
assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == DHCP_OFFER);
test.option_type.type = DHCP_REQUEST;
assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 0);
test.option_requested_ip.code = SD_DHCP_OPTION_REQUESTED_IP_ADDRESS;
test.option_requested_ip.length = 4;
test.option_requested_ip.address = htobe32(0x12345678);
assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == DHCP_NAK);
test.option_server_id.code = SD_DHCP_OPTION_SERVER_IDENTIFIER;
test.option_server_id.length = 4;
test.option_server_id.address = htobe32(INADDR_LOOPBACK);
test.option_requested_ip.address = htobe32(INADDR_LOOPBACK + 3);
assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == DHCP_ACK);
test.option_server_id.address = htobe32(0x12345678);
test.option_requested_ip.address = htobe32(INADDR_LOOPBACK + 3);
assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 0);
test.option_server_id.address = htobe32(INADDR_LOOPBACK);
test.option_requested_ip.address = htobe32(INADDR_LOOPBACK + 4);
assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 0);
test.option_requested_ip.address = htobe32(INADDR_LOOPBACK + 3);
assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == DHCP_ACK);
test.option_client_id.code = SD_DHCP_OPTION_CLIENT_IDENTIFIER;
test.option_client_id.length = 7;
test.option_client_id.id[0] = 0x01;
test.option_client_id.id[1] = 'A';
test.option_client_id.id[2] = 'B';
test.option_client_id.id[3] = 'C';
test.option_client_id.id[4] = 'D';
test.option_client_id.id[5] = 'E';
test.option_client_id.id[6] = 'F';
assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == DHCP_ACK);
test.option_requested_ip.address = htobe32(INADDR_LOOPBACK + 30);
assert_se(dhcp_server_handle_message(server, (DHCPMessage*)&test, sizeof(test)) == 0);
}
static uint64_t client_id_hash_helper(DHCPClientId *id, uint8_t key[HASH_KEY_SIZE]) {
struct siphash state;
siphash24_init(&state, key);
client_id_hash_func(id, &state);
return htole64(siphash24_finalize(&state));
}
static void test_client_id_hash(void) {
DHCPClientId a = {
.length = 4,
}, b = {
.length = 4,
};
uint8_t hash_key[HASH_KEY_SIZE] = {
'0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', 'A', 'B', 'C', 'D', 'E', 'F',
};
a.data = (uint8_t*)strdup("abcd");
b.data = (uint8_t*)strdup("abcd");
assert_se(client_id_compare_func(&a, &b) == 0);
assert_se(client_id_hash_helper(&a, hash_key) == client_id_hash_helper(&b, hash_key));
a.length = 3;
assert_se(client_id_compare_func(&a, &b) != 0);
a.length = 4;
assert_se(client_id_compare_func(&a, &b) == 0);
assert_se(client_id_hash_helper(&a, hash_key) == client_id_hash_helper(&b, hash_key));
b.length = 3;
assert_se(client_id_compare_func(&a, &b) != 0);
b.length = 4;
assert_se(client_id_compare_func(&a, &b) == 0);
assert_se(client_id_hash_helper(&a, hash_key) == client_id_hash_helper(&b, hash_key));
free(b.data);
b.data = (uint8_t*)strdup("abce");
assert_se(client_id_compare_func(&a, &b) != 0);
free(a.data);
free(b.data);
}
int main(int argc, char *argv[]) {
_cleanup_(sd_event_unrefp) sd_event *e;
int r;
test_setup_logging(LOG_DEBUG);
assert_se(sd_event_new(&e) >= 0);
r = test_basic(e);
if (r != 0)
return log_tests_skipped("cannot start dhcp server");
test_message_handler();
test_client_id_hash();
return 0;
}
|
