/*
* BIRD Library -- Flow specification (RFC 5575) Tests
*
* (c) 2016 CZ.NIC z.s.p.o.
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#include "test/birdtest.h"
#include "lib/flowspec.h"
#define NET_ADDR_FLOW4_(what,prefix,pxlen,data_) \
do \
{ \
what = alloca(sizeof(net_addr_flow4) + 128); \
*what = NET_ADDR_FLOW4(prefix, pxlen, sizeof(data_)); \
memcpy(what->data, &(data_), sizeof(data_)); \
} while(0)
#define NET_ADDR_FLOW6_(what,prefix,pxlen,data_) \
do \
{ \
what = alloca(sizeof(net_addr_flow6) + 128); \
*what = NET_ADDR_FLOW6(prefix, pxlen, sizeof(data_)); \
memcpy(what->data, &(data_), sizeof(data_)); \
} while(0)
static int
t_read_length(void)
{
byte data[] = { 0xcc, 0xcc, 0xcc };
for (uint expect = 0; expect < 0xf0; expect++)
{
*data = expect;
uint get = flow_read_length(data);
bt_assert_msg(get == expect, "Testing get length 0x%02x (get 0x%02x)", expect, get);
}
for (uint expect = 0; expect <= 0xfff; expect++)
{
put_u16(data, expect | 0xf000);
uint get = flow_read_length(data);
bt_assert_msg(get == expect, "Testing get length 0x%03x (get 0x%03x)", expect, get);
}
return 1;
}
static int
t_write_length(void)
{
byte data[] = { 0xcc, 0xcc, 0xcc };
for (uint expect = 0; expect <= 0xfff; expect++)
{
uint offset = flow_write_length(data, expect);
uint set = (expect < 0xf0) ? *data : (get_u16(data) & 0x0fff);
bt_assert_msg(set == expect, "Testing set length 0x%03x (set 0x%03x)", expect, set);
bt_assert(offset == (expect < 0xf0 ? 1 : 2));
}
return 1;
}
static int
t_first_part(void)
{
net_addr_flow4 *f;
NET_ADDR_FLOW4_(f, ip4_build(10,0,0,1), 24, ((byte[]) { 0x00, 0x00, 0xab }));
const byte *under240 = &f->data[1];
const byte *above240 = &f->data[2];
/* Case 0x00 0x00 */
bt_assert(flow4_first_part(f) == NULL);
/* Case 0x01 0x00 */
f->data[0] = 0x01;
bt_assert(flow4_first_part(f) == under240);
/* Case 0xef 0x00 */
f->data[0] = 0xef;
bt_assert(flow4_first_part(f) == under240);
/* Case 0xf0 0x00 */
f->data[0] = 0xf0;
bt_assert(flow4_first_part(f) == NULL);
/* Case 0xf0 0x01 */
f->data[1] = 0x01;
bt_assert(flow4_first_part(f) == above240);
/* Case 0xff 0xff */
f->data[0] = 0xff;
f->data[1] = 0xff;
bt_assert(flow4_first_part(f) == above240);
return 1;
}
static int
t_iterators4(void)
{
net_addr_flow4 *f;
NET_ADDR_FLOW4_(f, ip4_build(5,6,7,0), 24, ((byte[]) {
25, /* Length */
FLOW_TYPE_DST_PREFIX, 24, 5, 6, 7,
FLOW_TYPE_SRC_PREFIX, 32, 10, 11, 12, 13,
FLOW_TYPE_IP_PROTOCOL, 0x81, 0x06,
FLOW_TYPE_PORT, 0x03, 0x89, 0x45, 0x8b, 0x91, 0x1f, 0x90,
FLOW_TYPE_TCP_FLAGS, 0x80, 0x55,
}));
const byte *start = f->data;
const byte *p1_dst_pfx = &f->data[1];
const byte *p2_src_pfx = &f->data[6];
const byte *p3_ip_proto = &f->data[12];
const byte *p4_port = &f->data[15];
const byte *p5_tcp_flags = &f->data[23];
const byte *end = &f->data[25];
bt_assert(flow_read_length(f->data) == (end-start));
bt_assert(flow4_first_part(f) == p1_dst_pfx);
bt_assert(flow4_next_part(p1_dst_pfx, end) == p2_src_pfx);
bt_assert(flow4_next_part(p2_src_pfx, end) == p3_ip_proto);
bt_assert(flow4_next_part(p3_ip_proto, end) == p4_port);
bt_assert(flow4_next_part(p4_port, end) == p5_tcp_flags);
bt_assert(flow4_next_part(p5_tcp_flags, end) == NULL);
return 1;
}
static int
t_iterators6(void)
{
net_addr_flow6 *f;
NET_ADDR_FLOW6_(f, ip6_build(0,0,0x12345678,0x9a000000), 64, ((byte[]) {
26, /* Length */
FLOW_TYPE_DST_PREFIX, 0x68, 0x40, 0x12, 0x34, 0x56, 0x78, 0x9a,
FLOW_TYPE_SRC_PREFIX, 0x08, 0x0, 0xc0,
FLOW_TYPE_NEXT_HEADER, 0x81, 0x06,
FLOW_TYPE_PORT, 0x03, 0x89, 0x45, 0x8b, 0x91, 0x1f, 0x90,
FLOW_TYPE_LABEL, 0x80, 0x55,
}));
const byte *start = f->data;
const byte *p1_dst_pfx = &f->data[1];
const byte *p2_src_pfx = &f->data[9];
const byte *p3_next_header = &f->data[13];
const byte *p4_port = &f->data[16];
const byte *p5_label = &f->data[24];
const byte *end = &f->data[26];
bt_assert(flow_read_length(f->data) == (end-start));
bt_assert(flow6_first_part(f) == p1_dst_pfx);
bt_assert(flow6_next_part(p1_dst_pfx, end) == p2_src_pfx);
bt_assert(flow6_next_part(p2_src_pfx, end) == p3_next_header);
bt_assert(flow6_next_part(p3_next_header, end) == p4_port);
bt_assert(flow6_next_part(p4_port, end) == p5_label);
bt_assert(flow6_next_part(p5_label, end) == NULL);
return 1;
}
static int
t_validation4(void)
{
enum flow_validated_state res;
byte nlri1[] = {
FLOW_TYPE_DST_PREFIX, 24, 5, 6, 7,
FLOW_TYPE_SRC_PREFIX, 32, 10, 11, 12, 13,
FLOW_TYPE_IP_PROTOCOL, 0x81, 0x06,
FLOW_TYPE_PORT, 0x03, 0x89, 0x45, 0x8b, 0x91, 0x1f, 0x90,
FLOW_TYPE_TCP_FLAGS, 0x80, 0x55,
};
/* Isn't included destination prefix */
res = flow4_validate(nlri1, 0);
bt_assert(res == FLOW_ST_DEST_PREFIX_REQUIRED);
res = flow4_validate(&nlri1[5], sizeof(nlri1)-5);
bt_assert(res == FLOW_ST_DEST_PREFIX_REQUIRED);
/* Valid / Not Complete testing */
uint valid_sizes[] = {5, 11, 14, 22, 25, 0};
uint valid_idx = 0;
for (uint size = 1; size <= sizeof(nlri1); size++)
{
res = flow4_validate(nlri1, size);
bt_debug("size %u, result: %s\n", size, flow_validated_state_str(res));
if (size == valid_sizes[valid_idx])
{
valid_idx++;
bt_assert(res == FLOW_ST_VALID);
}
else
{
bt_assert(res == FLOW_ST_NOT_COMPLETE);
}
}
/* Misc err tests */
struct tset {
enum flow_validated_state expect;
char *description;
u16 size;
byte *nlri;
};
#define TS(type, msg, data) ((struct tset) {type, msg, sizeof(data), (data)})
struct tset tset[] = {
TS(
FLOW_ST_EXCEED_MAX_PREFIX_LENGTH,
"33-length IPv4 prefix",
((byte []) {
FLOW_TYPE_DST_PREFIX, 33, 5, 6, 7, 8, 9
})
),
TS(
FLOW_ST_BAD_TYPE_ORDER,
"Bad flowspec component type order",
((byte []) {
FLOW_TYPE_SRC_PREFIX, 32, 10, 11, 12, 13,
FLOW_TYPE_DST_PREFIX, 24, 5, 6, 7,
})
),
TS(
FLOW_ST_BAD_TYPE_ORDER,
"Doubled destination prefix component",
((byte []) {
FLOW_TYPE_DST_PREFIX, 24, 5, 6, 7,
FLOW_TYPE_DST_PREFIX, 24, 5, 6, 7,
})
),
TS(
FLOW_ST_AND_BIT_SHOULD_BE_UNSET,
"The first numeric operator has set the AND bit",
((byte []) {
FLOW_TYPE_PORT, 0x43, 0x89, 0x45, 0x8b, 0x91, 0x1f, 0x90,
})
),
TS(
FLOW_ST_ZERO_BIT_SHOULD_BE_UNSED,
"Set zero bit in operand to one",
((byte []) {
FLOW_TYPE_IP_PROTOCOL, 0x89, 0x06,
})
),
TS(
FLOW_ST_UNKNOWN_COMPONENT,
"Unknown component of type number 13",
((byte []) {
FLOW_TYPE_DST_PREFIX, 24, 5, 6, 7,
FLOW_TYPE_TCP_FLAGS, 0x80, 0x55,
13 /*something new*/, 0x80, 0x55,
})
),
};
#undef TS
for (uint tcase = 0; tcase < ARRAY_SIZE(tset); tcase++)
{
res = flow4_validate(tset[tcase].nlri, tset[tcase].size);
bt_assert_msg(res == tset[tcase].expect, "Assertion (%s == %s) %s", flow_validated_state_str(res), flow_validated_state_str(tset[tcase].expect), tset[tcase].description);
}
return 1;
}
static int
t_validation6(void)
{
enum flow_validated_state res;
byte nlri1[] = {
FLOW_TYPE_DST_PREFIX, 103, 61, 0x01, 0x12, 0x34, 0x56, 0x78, 0x98,
FLOW_TYPE_SRC_PREFIX, 8, 0, 0xc0,
FLOW_TYPE_NEXT_HEADER, 0x81, 0x06,
FLOW_TYPE_PORT, 0x03, 0x89, 0x45, 0x8b, 0x91, 0x1f, 0x90,
FLOW_TYPE_LABEL, 0x80, 0x55,
};
/* Isn't included destination prefix */
res = flow6_validate(nlri1, 0);
bt_assert(res == FLOW_ST_VALID);
/* Valid / Not Complete testing */
uint valid_sizes[] = {0, 9, 13, 16, 24, 27, 0};
uint valid_idx = 0;
for (uint size = 0; size <= sizeof(nlri1); size++)
{
res = flow6_validate(nlri1, size);
bt_debug("size %u, result: %s\n", size, flow_validated_state_str(res));
if (size == valid_sizes[valid_idx])
{
valid_idx++;
bt_assert(res == FLOW_ST_VALID);
}
else
{
bt_assert(res == FLOW_ST_NOT_COMPLETE);
}
}
/* Misc err tests */
struct tset {
enum flow_validated_state expect;
char *description;
u16 size;
byte *nlri;
};
#define TS(type, msg, data) ((struct tset) {type, msg, sizeof(data), (data)})
struct tset tset[] = {
TS(
FLOW_ST_EXCEED_MAX_PREFIX_LENGTH,
"129-length IPv6 prefix",
((byte []) {
FLOW_TYPE_DST_PREFIX, 129, 64, 0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc, 0xde, 0xf0, 0x12
})
),
TS(
FLOW_ST_EXCEED_MAX_PREFIX_OFFSET,
"Prefix offset is higher than prefix length",
((byte []) {
FLOW_TYPE_DST_PREFIX, 48, 64, 0x40, 0x12, 0x34
})
),
TS(
FLOW_ST_BAD_TYPE_ORDER,
"Bad flowspec component type order",
((byte []) {
FLOW_TYPE_NEXT_HEADER, 0x81, 0x06,
FLOW_TYPE_SRC_PREFIX, 8, 0, 0xc0,
})
),
TS(
FLOW_ST_BAD_TYPE_ORDER,
"Doubled destination prefix component",
((byte []) {
FLOW_TYPE_DST_PREFIX, 103, 61, 0x01, 0x12, 0x34, 0x56, 0x78, 0x98,
FLOW_TYPE_DST_PREFIX, 103, 61, 0x01, 0x12, 0x34, 0x56, 0x78, 0x98,
})
),
TS(
FLOW_ST_AND_BIT_SHOULD_BE_UNSET,
"The first numeric operator has set the AND bit",
((byte []) {
FLOW_TYPE_PORT, 0x43, 0x89, 0x45, 0x8b, 0x91, 0x1f, 0x90
})
),
TS(
FLOW_ST_ZERO_BIT_SHOULD_BE_UNSED,
"Set zero bit in operand to one",
((byte []) {
FLOW_TYPE_NEXT_HEADER, 0x89, 0x06
})
),
TS(
FLOW_ST_VALID,
"Component of type number 13 (Label) is well-known in IPv6",
((byte []) {
FLOW_TYPE_LABEL, 0x80, 0x55
})
),
TS(
FLOW_ST_UNKNOWN_COMPONENT,
"Unknown component of type number 14",
((byte []) {
FLOW_TYPE_LABEL, 0x80, 0x55,
14 /*something new*/, 0x80, 0x55,
})
)
};
#undef TS
for (uint tcase = 0; tcase < ARRAY_SIZE(tset); tcase++)
{
res = flow6_validate(tset[tcase].nlri, tset[tcase].size);
bt_assert_msg(res == tset[tcase].expect, "Assertion (%s == %s) %s", flow_validated_state_str(res), flow_validated_state_str(tset[tcase].expect), tset[tcase].description);
}
return 1;
}
/*
* Builder tests
*/
static int
t_builder4(void)
{
resource_init();
struct flow_builder *fb = flow_builder_init(&root_pool);
linpool *lp = lp_new_default(&root_pool);
/* Expectation */
static byte nlri[] = {
25,
FLOW_TYPE_DST_PREFIX, 24, 5, 6, 7,
FLOW_TYPE_SRC_PREFIX, 32, 10, 11, 12, 13,
FLOW_TYPE_IP_PROTOCOL, 0x80, 0x06,
FLOW_TYPE_PORT, 0x03, 0x89, 0x45, 0x8b, 0x91, 0x1f, 0x90,
FLOW_TYPE_TCP_FLAGS, 0x80, 0x55
};
net_addr_flow4 *expect;
NET_ADDR_FLOW4_(expect, ip4_build(5, 6, 7, 0), 24, nlri);
/* Normal order */
net_addr_ip4 n1;
net_fill_ip4((net_addr *) &n1, ip4_build(5,6,7,0), 24);
flow_builder_set_type(fb, FLOW_TYPE_DST_PREFIX);
flow_builder4_add_pfx(fb, &n1);
net_addr_ip4 n2;
net_fill_ip4((net_addr *) &n2, ip4_build(10,11,12,13), 32);
flow_builder_set_type(fb, FLOW_TYPE_SRC_PREFIX);
flow_builder4_add_pfx(fb, &n2);
flow_builder_set_type(fb, FLOW_TYPE_IP_PROTOCOL);
flow_builder_add_op_val(fb, 0, 0x06);
flow_builder_set_type(fb, FLOW_TYPE_PORT);
flow_builder_add_op_val(fb, 0x03, 0x89);
flow_builder_add_op_val(fb, 0x45, 0x8b);
flow_builder_add_op_val(fb, 0x01, 0x1f90);
/* Try put a component twice time */
flow_builder_set_type(fb, FLOW_TYPE_IP_PROTOCOL);
flow_builder_add_op_val(fb, 0, 0x06);
flow_builder_set_type(fb, FLOW_TYPE_TCP_FLAGS);
flow_builder_add_op_val(fb, 0, 0x55);
net_addr_flow4 *res = flow_builder4_finalize(fb, lp);
bt_assert(memcmp(res, expect, expect->length) == 0);
/* Reverse order */
flow_builder_clear(fb);
flow_builder_set_type(fb, FLOW_TYPE_TCP_FLAGS);
flow_builder_add_op_val(fb, 0, 0x55);
flow_builder_set_type(fb, FLOW_TYPE_PORT);
flow_builder_add_op_val(fb, 0x03, 0x89);
flow_builder_add_op_val(fb, 0x45, 0x8b);
flow_builder_add_op_val(fb, 0x01, 0x1f90);
flow_builder_set_type(fb, FLOW_TYPE_IP_PROTOCOL);
flow_builder_add_op_val(fb, 0, 0x06);
net_fill_ip4((net_addr *) &n2, ip4_build(10,11,12,13), 32);
flow_builder_set_type(fb, FLOW_TYPE_SRC_PREFIX);
flow_builder4_add_pfx(fb, &n2);
net_fill_ip4((net_addr *) &n1, ip4_build(5,6,7,0), 24);
flow_builder_set_type(fb, FLOW_TYPE_DST_PREFIX);
flow_builder4_add_pfx(fb, &n1);
bt_assert(memcmp(res, expect, expect->length) == 0);
return 1;
}
static int
t_builder6(void)
{
net_addr_ip6 ip;
resource_init();
linpool *lp = lp_new_default(&root_pool);
struct flow_builder *fb = flow_builder_init(&root_pool);
fb->ipv6 = 1;
/* Expectation */
byte nlri[] = {
27,
FLOW_TYPE_DST_PREFIX, 103, 61, 0x01, 0x12, 0x34, 0x56, 0x78, 0x98,
FLOW_TYPE_SRC_PREFIX, 8, 0, 0xc0,
FLOW_TYPE_NEXT_HEADER, 0x80, 0x06,
FLOW_TYPE_PORT, 0x03, 0x89, 0x45, 0x8b, 0x91, 0x1f, 0x90,
FLOW_TYPE_LABEL, 0x80, 0x55,
};
net_addr_flow6 *expect;
NET_ADDR_FLOW6_(expect, ip6_build(0, 1, 0x12345678, 0x98000000), 103, nlri);
/* Normal order */
net_fill_ip6((net_addr *) &ip, ip6_build(0, 1, 0x12345678, 0x98000000), 103);
flow_builder_set_type(fb, FLOW_TYPE_DST_PREFIX);
flow_builder6_add_pfx(fb, &ip, 61);
/* Try put a component twice time */
net_fill_ip6((net_addr *) &ip, ip6_build(0, 1, 0x12345678, 0x98000000), 103);
flow_builder_set_type(fb, FLOW_TYPE_DST_PREFIX);
bt_assert(flow_builder6_add_pfx(fb, &ip, 61) == 0);
net_fill_ip6((net_addr *) &ip, ip6_build(0xc0000000,0,0,0), 8);
flow_builder_set_type(fb, FLOW_TYPE_SRC_PREFIX);
flow_builder6_add_pfx(fb, &ip, 0);
flow_builder_set_type(fb, FLOW_TYPE_NEXT_HEADER);
flow_builder_add_op_val(fb, 0, 0x06);
flow_builder_set_type(fb, FLOW_TYPE_PORT);
flow_builder_add_op_val(fb, 0x03, 0x89);
flow_builder_add_op_val(fb, 0x45, 0x8b);
flow_builder_add_op_val(fb, 0x01, 0x1f90);
flow_builder_set_type(fb, FLOW_TYPE_LABEL);
flow_builder_add_op_val(fb, 0, 0x55);
net_addr_flow6 *res = flow_builder6_finalize(fb, lp);
bt_assert(memcmp(res, expect, expect->length) == 0);
/* Reverse order */
flow_builder_clear(fb);
fb->ipv6 = 1;
flow_builder_set_type(fb, FLOW_TYPE_LABEL);
flow_builder_add_op_val(fb, 0, 0x55);
flow_builder_set_type(fb, FLOW_TYPE_PORT);
flow_builder_add_op_val(fb, 0x03, 0x89);
flow_builder_add_op_val(fb, 0x45, 0x8b);
flow_builder_add_op_val(fb, 0x01, 0x1f90);
flow_builder_set_type(fb, FLOW_TYPE_NEXT_HEADER);
flow_builder_add_op_val(fb, 0, 0x06);
net_fill_ip6((net_addr *) &ip, ip6_build(0xc0000000,0,0,0), 8);
flow_builder_set_type(fb, FLOW_TYPE_SRC_PREFIX);
flow_builder6_add_pfx(fb, &ip, 0);
net_fill_ip6((net_addr *) &ip, ip6_build(0, 1, 0x12345678, 0x98000000), 103);
flow_builder_set_type(fb, FLOW_TYPE_DST_PREFIX);
flow_builder6_add_pfx(fb, &ip, 61);
res = flow_builder6_finalize(fb, lp);
bt_assert(memcmp(res, expect, expect->length) == 0);
return 1;
}
static int
t_formatting4(void)
{
char b[1024];
byte nlri[] = {
0,
FLOW_TYPE_DST_PREFIX, 0x08, 10,
FLOW_TYPE_IP_PROTOCOL, 0x81, 23,
FLOW_TYPE_DST_PORT, 0x02, 24, 0x44, 30, 0x03, 40, 0x45, 50, 0x03, 60, 0x45, 70, 0x01, 80, 0xc3, 90,
FLOW_TYPE_SRC_PORT, 0x02, 24, 0x44, 0x1e, 0x01, 0x28, 0x01, 0x32, 0x03, 0x3c, 0x45, 0x46, 0x81, 0x50,
FLOW_TYPE_ICMP_TYPE, 0x81, 0x50,
FLOW_TYPE_ICMP_CODE, 0x81, 0x5a,
FLOW_TYPE_TCP_FLAGS, 0x01, 0x03, 0xc2, 0x0c,
FLOW_TYPE_PACKET_LENGTH, 0x03, 0, 0xd5, 0xff, 0xff,
FLOW_TYPE_DSCP, 0x81, 63,
FLOW_TYPE_FRAGMENT, 0x01, 0x01, 0x82, 0x02
};
*nlri = (u8) sizeof(nlri);
net_addr_flow4 *input;
NET_ADDR_FLOW4_(input, ip4_build(5, 6, 7, 0), 24, nlri);
const char *expect = "flow4 { dst 10.0.0.0/8; proto 23; dport > 24 && < 30 || 40..50,60..70,80 && >= 90; sport > 24 && < 30 || 40,50,60..70,80; icmp type 80; icmp code 90; tcp flags 0x3/0x3,0x0/0xc; length 0..65535; dscp 63; fragment dont_fragment || !is_fragment; }";
bt_assert(flow4_net_format(b, sizeof(b), input) == strlen(expect));
bt_debug(" expect: '%s',\n output: '%s'\n", expect, b);
bt_assert(strcmp(b, expect) == 0);
return 1;
}
static int
t_formatting6(void)
{
char b[1024];
byte nlri[] = {
0,
FLOW_TYPE_DST_PREFIX, 103, 61, 0x01, 0x12, 0x34, 0x56, 0x78, 0x98,
FLOW_TYPE_SRC_PREFIX, 8, 0, 0xc0,
FLOW_TYPE_NEXT_HEADER, 0x81, 0x06,
FLOW_TYPE_PORT, 0x03, 20, 0x45, 40, 0x91, 0x01, 0x11,
FLOW_TYPE_LABEL, 0xa0, 0x12, 0x34, 0x56, 0x78,
};
*nlri = (u8) sizeof(nlri);
net_addr_flow6 *input;
NET_ADDR_FLOW6_(input, ip6_build(0, 1, 0x12345678, 0x98000000), 103, nlri);
const char *expect = "flow6 { dst ::1:1234:5678:9800:0/103 offset 61; src c000::/8; next header 6; port 20..40,273; label !0x0/0x12345678; }";
bt_assert(flow6_net_format(b, sizeof(b), input) == strlen(expect));
bt_debug(" expect: '%s',\n output: '%s'\n", expect, b);
bt_assert(strcmp(b, expect) == 0);
return 1;
}
int
main(int argc, char *argv[])
{
bt_init(argc, argv);
bt_test_suite(t_read_length, "Testing get NLRI length");
bt_test_suite(t_write_length, "Testing set NLRI length");
bt_test_suite(t_first_part, "Searching first part in net_addr_flow");
bt_test_suite(t_iterators4, "Testing iterators (IPv4)");
bt_test_suite(t_iterators6, "Testing iterators (IPv6)");
bt_test_suite(t_validation4, "Testing validation (IPv4)");
bt_test_suite(t_validation6, "Testing validation (IPv6)");
bt_test_suite(t_builder4, "Inserting components into existing Flow Specification (IPv4)");
bt_test_suite(t_builder6, "Inserting components into existing Flow Specification (IPv6)");
bt_test_suite(t_formatting4, "Formatting Flow Specification (IPv4) into text representation");
bt_test_suite(t_formatting6, "Formatting Flow Specification (IPv6) into text representation");
return bt_exit_value();
}
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