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
|
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright (C) 2014 Axis Communications AB. All rights reserved.
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <stdlib.h>
#include <assert.h>
#include <errno.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <unistd.h>
#include "util.h"
#include "socket-util.h"
#include "sd-ipv4ll.h"
#include "ipv4ll-internal.h"
static bool verbose = false;
static bool extended = false;
static int test_fd[2];
static int basic_request_handler_bind = 0;
static int basic_request_handler_stop = 0;
static void* basic_request_handler_user_data = (void*)0xCABCAB;
static void basic_request_handler(sd_ipv4ll *ll, int event, void *userdata) {
assert_se(userdata == basic_request_handler_user_data);
switch(event) {
case IPV4LL_EVENT_STOP:
basic_request_handler_stop = 1;
break;
case IPV4LL_EVENT_BIND:
basic_request_handler_bind = 1;
break;
default:
assert_se(0);
break;
}
}
int arp_network_send_raw_socket(int fd, const union sockaddr_union *link,
const struct ether_arp *arp) {
assert_se(arp);
assert_se(link);
assert_se(fd >= 0);
if (send(fd, arp, sizeof(struct ether_arp), 0) < 0)
return -errno;
return 0;
}
int arp_network_bind_raw_socket(int index, union sockaddr_union *link) {
if (socketpair(AF_UNIX, SOCK_DGRAM | SOCK_NONBLOCK, 0, test_fd) < 0)
return -errno;
return test_fd[0];
}
static void test_arp_header(struct ether_arp *arp) {
assert_se(arp);
assert_se(arp->ea_hdr.ar_hrd == htons(ARPHRD_ETHER)); /* HTYPE */
assert_se(arp->ea_hdr.ar_pro == htons(ETHERTYPE_IP)); /* PTYPE */
assert_se(arp->ea_hdr.ar_hln == ETH_ALEN); /* HLEN */
assert_se(arp->ea_hdr.ar_pln == sizeof arp->arp_spa); /* PLEN */
assert_se(arp->ea_hdr.ar_op == htons(ARPOP_REQUEST)); /* REQUEST */
}
static void test_arp_probe(void) {
struct ether_arp arp;
struct ether_addr mac_addr = {
.ether_addr_octet = {'A', 'B', 'C', '1', '2', '3'}};
be32_t pa = 0x3030;
if (verbose)
printf("* %s\n", __FUNCTION__);
arp_packet_probe(&arp, pa, &mac_addr);
test_arp_header(&arp);
assert_se(memcmp(arp.arp_sha, &mac_addr, ETH_ALEN) == 0);
assert_se(memcmp(arp.arp_tpa, &pa, sizeof(pa)) == 0);
}
static void test_arp_announce(void) {
struct ether_arp arp;
struct ether_addr mac_addr = {
.ether_addr_octet = {'A', 'B', 'C', '1', '2', '3'}};
be32_t pa = 0x3131;
if (verbose)
printf("* %s\n", __FUNCTION__);
arp_packet_announcement(&arp, pa, &mac_addr);
test_arp_header(&arp);
assert_se(memcmp(arp.arp_sha, &mac_addr, ETH_ALEN) == 0);
assert_se(memcmp(arp.arp_tpa, &pa, sizeof(pa)) == 0);
assert_se(memcmp(arp.arp_spa, &pa, sizeof(pa)) == 0);
}
static void test_public_api_setters(sd_event *e) {
uint8_t seed[8];
sd_ipv4ll *ll;
struct ether_addr mac_addr = {
.ether_addr_octet = {'A', 'B', 'C', '1', '2', '3'}};
if (verbose)
printf("* %s\n", __FUNCTION__);
assert_se(sd_ipv4ll_new(&ll) == 0);
assert_se(ll);
assert_se(sd_ipv4ll_attach_event(NULL, NULL, 0) == -EINVAL);
assert_se(sd_ipv4ll_attach_event(ll, e, 0) == 0);
assert_se(sd_ipv4ll_attach_event(ll, e, 0) == -EBUSY);
assert_se(sd_ipv4ll_set_callback(NULL, NULL, NULL) == -EINVAL);
assert_se(sd_ipv4ll_set_callback(ll, NULL, NULL) == 0);
assert_se(sd_ipv4ll_set_address_seed(NULL, NULL) == -EINVAL);
assert_se(sd_ipv4ll_set_address_seed(ll, NULL) == -EINVAL);
assert_se(sd_ipv4ll_set_address_seed(ll, seed) == 0);
assert_se(sd_ipv4ll_set_mac(NULL, NULL) == -EINVAL);
assert_se(sd_ipv4ll_set_mac(ll, NULL) == -EINVAL);
assert_se(sd_ipv4ll_set_mac(ll, &mac_addr) == 0);
assert_se(sd_ipv4ll_set_index(NULL, -1) == -EINVAL);
assert_se(sd_ipv4ll_set_index(ll, -1) == -EINVAL);
assert_se(sd_ipv4ll_set_index(ll, -99) == -EINVAL);
assert_se(sd_ipv4ll_set_index(ll, 1) == 0);
assert_se(sd_ipv4ll_set_index(ll, 99) == 0);
assert_se(sd_ipv4ll_ref(ll) == ll);
assert_se(sd_ipv4ll_unref(ll) == ll);
/* Cleanup */
assert_se(sd_ipv4ll_unref(ll) == NULL);
}
static void test_basic_request(sd_event *e) {
sd_ipv4ll *ll;
struct ether_arp arp;
struct ether_addr mac_addr = {
.ether_addr_octet = {'A', 'B', 'C', '1', '2', '3'}};
if (verbose)
printf("* %s\n", __FUNCTION__);
assert_se(sd_ipv4ll_new(&ll) == 0);
assert_se(sd_ipv4ll_start(ll) == -EINVAL);
assert_se(sd_ipv4ll_attach_event(ll, e, 0) == 0);
assert_se(sd_ipv4ll_start(ll) == -EINVAL);
assert_se(sd_ipv4ll_set_mac(ll, &mac_addr) == 0);
assert_se(sd_ipv4ll_start(ll) == -EINVAL);
assert_se(sd_ipv4ll_set_callback(ll, basic_request_handler,
basic_request_handler_user_data) == 0);
assert_se(sd_ipv4ll_start(ll) == -EINVAL);
assert_se(sd_ipv4ll_set_index(ll, 1) == 0);
assert_se(sd_ipv4ll_start(ll) == 0);
sd_event_run(e, (uint64_t) -1);
assert_se(sd_ipv4ll_start(ll) == -EBUSY);
/* PROBE */
sd_event_run(e, (uint64_t) -1);
assert_se(read(test_fd[1], &arp, sizeof(struct ether_arp)) == sizeof(struct ether_arp));
test_arp_header(&arp);
if (extended) {
/* PROBE */
sd_event_run(e, (uint64_t) -1);
assert_se(read(test_fd[1], &arp, sizeof(struct ether_arp)) == sizeof(struct ether_arp));
test_arp_header(&arp);
/* PROBE */
sd_event_run(e, (uint64_t) -1);
assert_se(read(test_fd[1], &arp, sizeof(struct ether_arp)) == sizeof(struct ether_arp));
test_arp_header(&arp);
sd_event_run(e, (uint64_t) -1);
assert_se(basic_request_handler_bind == 1);
}
sd_ipv4ll_stop(ll);
assert_se(basic_request_handler_stop == 1);
/* Cleanup */
assert_se(sd_ipv4ll_unref(ll) == NULL);
safe_close(test_fd[1]);
}
int main(int argc, char *argv[]) {
sd_event *e;
assert_se(sd_event_new(&e) >= 0);
test_public_api_setters(e);
test_arp_probe();
test_arp_announce();
test_basic_request(e);
return 0;
}
|
