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/*
* 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"
#include "filter/data.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 = alloca(sizeof(struct f_path_mask) + AS_PATH_LENGTH * sizeof(struct f_path_mask_item));
mask->len = AS_PATH_LENGTH;
for (int i = AS_PATH_LENGTH - 1; i >= 0; i--)
{
u32 val = bt_random();
as_path = as_path_prepend(lp, as_path, val);
bt_debug("Prepending ASN: %10u \n", val);
if (i == 0)
last_prepended = val;
if (i == AS_PATH_LENGTH-1)
first_prepended = val;
mask->item[i].kind = PM_ASN;
mask->item[i].asn = val;
}
bt_assert_msg(as_path_match(as_path, mask), "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]);
struct f_val v = { .type = T_INT, .val.i = as_nums[i] };
bt_assert(as_path_filter(lp, as_path, &v, 0) != NULL);
bt_assert(as_path_filter(lp, as_path, &v, 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();
}
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