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
|
/*
* BIRD -- Path Operations Tests
*
* (c) 2015 CZ.NIC z.s.p.o.
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#include "test/birdtest.h"
#include "test/bt-utils.h"
#include "nest/route.h"
#include "nest/attrs.h"
#include "lib/resource.h"
#define TESTS_NUM 30
#define AS_PATH_LENGTH 1000
#if AS_PATH_LENGTH > AS_PATH_MAXLEN
#warning "AS_PATH_LENGTH should be <= AS_PATH_MAXLEN"
#endif
static int
t_as_path_match(void)
{
resource_init();
int round;
for (round = 0; round < TESTS_NUM; round++)
{
struct adata empty_as_path = {};
struct adata *as_path = &empty_as_path;
u32 first_prepended, last_prepended;
first_prepended = last_prepended = 0;
struct linpool *lp = lp_new_default(&root_pool);
struct f_path_mask mask[AS_PATH_LENGTH] = {};
int i;
for (i = 0; i < AS_PATH_LENGTH; i++)
{
u32 val = bt_random();
as_path = as_path_prepend(lp, as_path, val);
bt_debug("Prepending ASN: %10u \n", val);
if (i == 0)
first_prepended = val;
if (i == AS_PATH_LENGTH-1)
last_prepended = val;
mask[i].kind = PM_ASN;
mask[i].val = val;
if (i)
mask[i].next = &mask[i-1];
}
bt_assert_msg(as_path_match(as_path, &mask[AS_PATH_LENGTH-1]), "Mask should match with AS path");
u32 asn;
bt_assert(as_path_get_first(as_path, &asn));
bt_assert_msg(asn == last_prepended, "as_path_get_first() should return the last prepended ASN");
bt_assert(as_path_get_last(as_path, &asn));
bt_assert_msg(asn == first_prepended, "as_path_get_last() should return the first prepended ASN");
rfree(lp);
}
return 1;
}
static int
t_path_format(void)
{
resource_init();
struct adata empty_as_path = {};
struct adata *as_path = &empty_as_path;
struct linpool *lp = lp_new_default(&root_pool);
uint i;
for (i = 4294967285; i <= 4294967294; i++)
{
as_path = as_path_prepend(lp, as_path, i);
bt_debug("Prepending ASN: %10u \n", i);
}
#define BUFFER_SIZE 120
byte buf[BUFFER_SIZE] = {};
as_path_format(&empty_as_path, buf, BUFFER_SIZE);
bt_assert_msg(strcmp(buf, "") == 0, "Buffer(%zu): '%s'", strlen(buf), buf);
as_path_format(as_path, buf, BUFFER_SIZE);
bt_assert_msg(strcmp(buf, "4294967294 4294967293 4294967292 4294967291 4294967290 4294967289 4294967288 4294967287 4294967286 4294967285") == 0, "Buffer(%zu): '%s'", strlen(buf), buf);
#define SMALL_BUFFER_SIZE 25
byte buf2[SMALL_BUFFER_SIZE] = {};
as_path_format(as_path, buf2, SMALL_BUFFER_SIZE);
bt_assert_msg(strcmp(buf2, "4294967294 42...") == 0, "Small Buffer(%zu): '%s'", strlen(buf2), buf2);
rfree(lp);
return 1;
}
static int
count_asn_in_array(const u32 *array, u32 asn)
{
int counts_of_contains = 0;
int u;
for (u = 0; u < AS_PATH_LENGTH; u++)
if (array[u] == asn)
counts_of_contains++;
return counts_of_contains;
}
static int
t_path_include(void)
{
resource_init();
struct adata empty_as_path = {};
struct adata *as_path = &empty_as_path;
struct linpool *lp = lp_new_default(&root_pool);
u32 as_nums[AS_PATH_LENGTH] = {};
int i;
for (i = 0; i < AS_PATH_LENGTH; i++)
{
u32 val = bt_random();
as_nums[i] = val;
as_path = as_path_prepend(lp, as_path, val);
}
for (i = 0; i < AS_PATH_LENGTH; i++)
{
int counts_of_contains = count_asn_in_array(as_nums, as_nums[i]);
bt_assert_msg(as_path_contains(as_path, as_nums[i], counts_of_contains), "AS Path should contains %d-times number %d", counts_of_contains, as_nums[i]);
bt_assert(as_path_filter(lp, as_path, NULL, as_nums[i], 0) != NULL);
bt_assert(as_path_filter(lp, as_path, NULL, as_nums[i], 1) != NULL);
}
for (i = 0; i < 10000; i++)
{
u32 test_val = bt_random();
int counts_of_contains = count_asn_in_array(as_nums, test_val);
int result = as_path_contains(as_path, test_val, (counts_of_contains == 0 ? 1 : counts_of_contains));
if (counts_of_contains)
bt_assert_msg(result, "As path should contain %d-times the number %u", counts_of_contains, test_val);
else
bt_assert_msg(result == 0, "As path should not contain the number %u", test_val);
}
rfree(lp);
return 1;
}
#if 0
static int
t_as_path_converting(void)
{
resource_init();
struct adata empty_as_path = {};
struct adata *as_path = &empty_as_path;
struct linpool *lp = lp_new_default(&root_pool);
#define AS_PATH_LENGTH_FOR_CONVERTING_TEST 10
int i;
for (i = 0; i < AS_PATH_LENGTH_FOR_CONVERTING_TEST; i++)
as_path = as_path_prepend(lp, as_path, i);
bt_debug("data length: %u \n", as_path->length);
byte buffer[100] = {};
int used_size = as_path_convert_to_new(as_path, buffer, AS_PATH_LENGTH_FOR_CONVERTING_TEST-1);
bt_debug("as_path_convert_to_new: len %d \n%s\n", used_size, buffer);
for (i = 0; i < used_size; i++)
{
bt_debug("\\03%d", buffer[i]);
}
bt_debug("\n");
bt_assert(memcmp(buffer,
"\032\039\030\030\030\030\030\030\030\039\030\030\030\030\030\030\030\038\030\030\030\030\030\030"
"\030\037\030\030\030\030\030\030\030\036\030\030\030\030",
38));
bzero(buffer, sizeof(buffer));
int new_used;
used_size = as_path_convert_to_old(as_path, buffer, &new_used);
bt_debug("as_path_convert_to_old: len %d, new_used: %d \n", used_size, new_used);
for (i = 0; i < used_size; i++)
{
bt_debug("\\03%d", buffer[i]);
}
bt_debug("\n");
bt_assert(memcmp(buffer,
"\032\0310\030\039\030\038\030\037\030\036\030\035\030\034\030\033\030\032\030\031\030\030",
22));
return 1;
}
#endif
int
main(int argc, char *argv[])
{
bt_init(argc, argv);
bt_test_suite(t_as_path_match, "Testing AS path matching and some a-path utilities.");
bt_test_suite(t_path_format, "Testing formating as path into byte buffer");
bt_test_suite(t_path_include, "Testing including a AS number in AS path");
// bt_test_suite(t_as_path_converting, "Testing as_path_convert_to_*() output constancy");
return bt_exit_value();
}
|
