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1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright (C) 2013 Intel Corporation. All rights reserved. | |
7 | ||
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. | |
12 | ||
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. | |
17 | ||
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/>. | |
20 | ***/ | |
21 | ||
22 | #include <stdlib.h> | |
23 | #include <assert.h> | |
24 | #include <errno.h> | |
39b7f596 | 25 | #include <stdio.h> |
8c00042c PF |
26 | #include <sys/types.h> |
27 | #include <sys/socket.h> | |
28 | #include <unistd.h> | |
be391925 | 29 | |
290c7324 | 30 | #include "util.h" |
8c00042c | 31 | #include "socket-util.h" |
290c7324 | 32 | |
be391925 | 33 | #include "dhcp-protocol.h" |
290c7324 | 34 | #include "dhcp-internal.h" |
be391925 PF |
35 | #include "sd-dhcp-client.h" |
36 | ||
290c7324 PF |
37 | static struct ether_addr mac_addr = { |
38 | .ether_addr_octet = {'A', 'B', 'C', '1', '2', '3'} | |
39 | }; | |
40 | ||
8c00042c PF |
41 | static int test_fd[2]; |
42 | ||
d3d8ac2f | 43 | static void test_request_basic(sd_event *e) |
be391925 | 44 | { |
b25ef18b TG |
45 | int r; |
46 | ||
be391925 PF |
47 | sd_dhcp_client *client; |
48 | ||
b25ef18b | 49 | r = sd_dhcp_client_new(&client); |
be391925 | 50 | |
b25ef18b | 51 | assert(r >= 0); |
be391925 PF |
52 | assert(client); |
53 | ||
b25ef18b TG |
54 | r = sd_dhcp_client_attach_event(client, e, 0); |
55 | assert(r >= 0); | |
56 | ||
be391925 PF |
57 | assert(sd_dhcp_client_set_request_option(NULL, 0) == -EINVAL); |
58 | assert(sd_dhcp_client_set_request_address(NULL, NULL) == -EINVAL); | |
59 | assert(sd_dhcp_client_set_index(NULL, 0) == -EINVAL); | |
60 | ||
61 | assert(sd_dhcp_client_set_index(client, 15) == 0); | |
62 | assert(sd_dhcp_client_set_index(client, -42) == -EINVAL); | |
63 | assert(sd_dhcp_client_set_index(client, -1) == 0); | |
64 | ||
65 | assert(sd_dhcp_client_set_request_option(client, | |
66 | DHCP_OPTION_SUBNET_MASK) == -EEXIST); | |
67 | assert(sd_dhcp_client_set_request_option(client, | |
68 | DHCP_OPTION_ROUTER) == -EEXIST); | |
69 | assert(sd_dhcp_client_set_request_option(client, | |
70 | DHCP_OPTION_HOST_NAME) == -EEXIST); | |
71 | assert(sd_dhcp_client_set_request_option(client, | |
72 | DHCP_OPTION_DOMAIN_NAME) == -EEXIST); | |
73 | assert(sd_dhcp_client_set_request_option(client, | |
74 | DHCP_OPTION_DOMAIN_NAME_SERVER) | |
75 | == -EEXIST); | |
76 | assert(sd_dhcp_client_set_request_option(client, | |
77 | DHCP_OPTION_NTP_SERVER) == -EEXIST); | |
78 | ||
79 | assert(sd_dhcp_client_set_request_option(client, | |
80 | DHCP_OPTION_PAD) == -EINVAL); | |
81 | assert(sd_dhcp_client_set_request_option(client, | |
82 | DHCP_OPTION_END) == -EINVAL); | |
83 | assert(sd_dhcp_client_set_request_option(client, | |
84 | DHCP_OPTION_MESSAGE_TYPE) == -EINVAL); | |
85 | assert(sd_dhcp_client_set_request_option(client, | |
86 | DHCP_OPTION_OVERLOAD) == -EINVAL); | |
87 | assert(sd_dhcp_client_set_request_option(client, | |
88 | DHCP_OPTION_PARAMETER_REQUEST_LIST) | |
89 | == -EINVAL); | |
90 | ||
91 | assert(sd_dhcp_client_set_request_option(client, 33) == 0); | |
92 | assert(sd_dhcp_client_set_request_option(client, 33) == -EEXIST); | |
93 | assert(sd_dhcp_client_set_request_option(client, 44) == 0); | |
7a7c74ca | 94 | assert(sd_dhcp_client_set_request_option(client, 33) == -EEXIST); |
be391925 PF |
95 | } |
96 | ||
39b7f596 PF |
97 | static uint16_t client_checksum(void *buf, int len) |
98 | { | |
99 | uint32_t sum; | |
100 | uint16_t *check; | |
101 | int i; | |
102 | uint8_t *odd; | |
103 | ||
104 | sum = 0; | |
105 | check = buf; | |
106 | ||
107 | for (i = 0; i < len / 2 ; i++) | |
108 | sum += check[i]; | |
109 | ||
110 | if (len & 0x01) { | |
111 | odd = buf; | |
0c6a3c88 | 112 | sum += odd[len - 1]; |
39b7f596 PF |
113 | } |
114 | ||
0c6a3c88 PF |
115 | while (sum >> 16) |
116 | sum = (sum & 0xffff) + (sum >> 16); | |
117 | ||
118 | return ~sum; | |
39b7f596 PF |
119 | } |
120 | ||
121 | static void test_checksum(void) | |
122 | { | |
123 | uint8_t buf[20] = { | |
124 | 0x45, 0x00, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00, | |
125 | 0x40, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
126 | 0xff, 0xff, 0xff, 0xff | |
127 | }; | |
128 | ||
2fba7b03 | 129 | assert(client_checksum(&buf, 20) == be16toh(0x78ae)); |
39b7f596 PF |
130 | } |
131 | ||
290c7324 PF |
132 | static int check_options(uint8_t code, uint8_t len, const uint8_t *option, |
133 | void *user_data) | |
134 | { | |
135 | return 0; | |
136 | } | |
137 | ||
8c00042c PF |
138 | int dhcp_network_send_raw_socket(int s, const union sockaddr_union *link, |
139 | const void *packet, size_t len) | |
290c7324 PF |
140 | { |
141 | size_t size; | |
142 | _cleanup_free_ DHCPPacket *discover; | |
143 | uint16_t ip_check, udp_check; | |
144 | int res; | |
145 | ||
8c00042c | 146 | assert(s >= 0); |
290c7324 PF |
147 | assert(packet); |
148 | ||
149 | size = sizeof(DHCPPacket) + 4; | |
150 | assert(len > size); | |
151 | ||
152 | discover = memdup(packet, len); | |
153 | ||
154 | assert(memcmp(discover->dhcp.chaddr, | |
155 | &mac_addr.ether_addr_octet, 6) == 0); | |
156 | assert(discover->ip.ttl == IPDEFTTL); | |
157 | assert(discover->ip.protocol == IPPROTO_UDP); | |
158 | assert(discover->ip.saddr == INADDR_ANY); | |
159 | assert(discover->ip.daddr == INADDR_BROADCAST); | |
8c00042c PF |
160 | assert(discover->udp.source == be16toh(DHCP_PORT_CLIENT)); |
161 | assert(discover->udp.dest == be16toh(DHCP_PORT_SERVER)); | |
290c7324 PF |
162 | |
163 | ip_check = discover->ip.check; | |
164 | ||
165 | discover->ip.ttl = 0; | |
166 | discover->ip.check = discover->udp.len; | |
167 | ||
168 | udp_check = ~client_checksum(&discover->ip.ttl, len - 8); | |
169 | assert(udp_check == 0xffff); | |
170 | ||
171 | discover->ip.ttl = IPDEFTTL; | |
172 | discover->ip.check = ip_check; | |
173 | ||
174 | ip_check = ~client_checksum(&discover->ip, sizeof(discover->ip)); | |
175 | assert(ip_check == 0xffff); | |
176 | ||
177 | size = len - sizeof(struct iphdr) - sizeof(struct udphdr); | |
178 | ||
179 | res = dhcp_option_parse(&discover->dhcp, size, check_options, NULL); | |
180 | if (res < 0) | |
181 | return res; | |
182 | ||
183 | return 575; | |
184 | } | |
185 | ||
8c00042c PF |
186 | int dhcp_network_bind_raw_socket(int index, union sockaddr_union *link) |
187 | { | |
188 | if (socketpair(AF_UNIX, SOCK_STREAM, 0, test_fd) < 0) | |
189 | return -errno; | |
190 | ||
191 | return test_fd[0]; | |
192 | } | |
193 | ||
234fc2df PF |
194 | int dhcp_network_bind_udp_socket(int index, be32_t client_address) |
195 | { | |
196 | return 0; | |
197 | } | |
198 | ||
199 | int dhcp_network_send_udp_socket(int s, be32_t server_address, | |
200 | const void *packet, size_t len) | |
201 | { | |
202 | return 0; | |
203 | } | |
204 | ||
d3d8ac2f | 205 | static void test_discover_message(sd_event *e) |
290c7324 PF |
206 | { |
207 | sd_dhcp_client *client; | |
b25ef18b | 208 | int res, r; |
290c7324 | 209 | |
b25ef18b TG |
210 | r = sd_dhcp_client_new(&client); |
211 | assert(r >= 0); | |
290c7324 PF |
212 | assert(client); |
213 | ||
b25ef18b TG |
214 | r = sd_dhcp_client_attach_event(client, e, 0); |
215 | assert(r >= 0); | |
216 | ||
290c7324 PF |
217 | assert(sd_dhcp_client_set_index(client, 42) >= 0); |
218 | assert(sd_dhcp_client_set_mac(client, &mac_addr) >= 0); | |
219 | ||
220 | assert(sd_dhcp_client_set_request_option(client, 248) >= 0); | |
221 | ||
222 | res = sd_dhcp_client_start(client); | |
223 | ||
224 | assert(res == 0 || res == -EINPROGRESS); | |
8c00042c PF |
225 | |
226 | close(test_fd[0]); | |
227 | close(test_fd[1]); | |
290c7324 PF |
228 | } |
229 | ||
be391925 PF |
230 | int main(int argc, char *argv[]) |
231 | { | |
d3d8ac2f PF |
232 | sd_event *e; |
233 | ||
234 | assert(sd_event_new(&e) >= 0); | |
235 | ||
236 | test_request_basic(e); | |
39b7f596 | 237 | test_checksum(); |
be391925 | 238 | |
d3d8ac2f PF |
239 | test_discover_message(e); |
240 | sd_event_run(e, (uint64_t) -1); | |
290c7324 | 241 | |
be391925 PF |
242 | return 0; |
243 | } |