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Flowspec: Test improvements

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Simplify Flowspec initialization macros.

Add examples from RFC 8955 4.3 and RFC 8956 3.8 to format tests.
This commit is contained in:
Ondrej Zajicek 2024-10-16 04:04:46 +02:00
parent a70ecadefe
commit 6f9ccfae9e
1 changed files with 116 additions and 62 deletions
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178
lib/flowspec_test.c
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@ -9,21 +9,37 @@
#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_FLOW4_(prefix,pxlen,nlri) \
({ \
uint _len = sizeof(nlri); \
net_addr_flow4 *_n = tmp_alloc(sizeof(net_addr_flow4) + _len); \
*_n = NET_ADDR_FLOW4(prefix, pxlen, _len); \
memcpy(_n->data, &(nlri), _len); \
if (_n->data[0] == 0) _n->data[0] = _len - 1; \
_n; \
})
#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)
#define NET_ADDR_FLOW4_NLRI(...) \
({ \
const byte _nlri[] = { __VA_ARGS__ }; \
NET_ADDR_FLOW4_(flow_read_ip4_part(_nlri + 1), _nlri[2], _nlri); \
})
#define NET_ADDR_FLOW6_(prefix,pxlen,nlri) \
({ \
uint _len = sizeof(nlri); \
net_addr_flow6 *_n = tmp_alloc(sizeof(net_addr_flow6) + _len); \
*_n = NET_ADDR_FLOW6(prefix, pxlen, _len); \
memcpy(_n->data, &(nlri), _len); \
if (_n->data[0] == 0) _n->data[0] = _len - 1; \
_n; \
})
#define NET_ADDR_FLOW6_NLRI(...) \
({ \
const byte _nlri[] = { __VA_ARGS__ }; \
NET_ADDR_FLOW6_(flow_read_ip6_part(_nlri + 1), _nlri[2], _nlri); \
})
static int
t_read_length(void)
@ -67,13 +83,13 @@ t_write_length(void)
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 }));
net_addr_flow4 *f = NET_ADDR_FLOW4_(IP4_NONE, 0, ((byte[]) { 0x00, 0x00, 0xab }));
const byte *under240 = &f->data[1];
const byte *above240 = &f->data[2];
/* Case 0x00 0x00 */
f->data[0] = 0x00;
bt_assert(flow4_first_part(f) == NULL);
/* Case 0x01 0x00 */
@ -103,15 +119,14 @@ t_first_part(void)
static int
t_iterators4(void)
{
net_addr_flow4 *f;
NET_ADDR_FLOW4_(f, ip4_build(5,6,7,0), 24, ((byte[]) {
const net_addr_flow4 *f = NET_ADDR_FLOW4_NLRI(
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];
@ -136,15 +151,14 @@ t_iterators4(void)
static int
t_iterators6(void)
{
net_addr_flow6 *f;
NET_ADDR_FLOW6_(f, ip6_build(0,0,0x12345678,0x9a000000), 0x68, ((byte[]) {
const net_addr_flow6 *f = NET_ADDR_FLOW6_NLRI(
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];
@ -169,15 +183,14 @@ t_iterators6(void)
static int
t_accessors4(void)
{
net_addr_flow4 *f;
NET_ADDR_FLOW4_(f, ip4_build(5,6,7,0), 24, ((byte[]) {
const net_addr_flow4 *f = NET_ADDR_FLOW4_NLRI(
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 *p1_dst_px = &f->data[1];
const ip4_addr p1_dst_addr = ip4_build(5,6,7,0);
@ -194,15 +207,14 @@ t_accessors4(void)
static int
t_accessors6(void)
{
net_addr_flow6 *f;
NET_ADDR_FLOW6_(f, ip6_build(0,0,0x12345678,0x9a000000), 0x68, ((byte[]) {
const net_addr_flow6 *f = NET_ADDR_FLOW6_NLRI(
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 *p1_dst_px = &f->data[1];
const ip6_addr p1_dst_addr = ip6_build(0,0,0x12345678,0x9a000000);
@ -450,17 +462,14 @@ t_builder4(void)
/* Expectation */
static byte nlri[] = {
25,
const net_addr_flow4 *expect = NET_ADDR_FLOW4_NLRI(
0,
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);
FLOW_TYPE_TCP_FLAGS, 0x80, 0x55,
);
/* Normal order */
@ -531,17 +540,14 @@ t_builder6(void)
/* Expectation */
byte nlri[] = {
27,
const net_addr_flow6 *expect = NET_ADDR_FLOW6_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, 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 */
@ -605,9 +611,11 @@ t_builder6(void)
static int
t_formatting4(void)
{
char b[1024];
const net_addr_flow4 *input[4];
const char *expect[4];
byte nlri[] = {
expect[0] = "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; }";
input[0] = NET_ADDR_FLOW4_NLRI(
0,
FLOW_TYPE_DST_PREFIX, 0x08, 10,
FLOW_TYPE_IP_PROTOCOL, 0x81, 23,
@ -618,18 +626,44 @@ t_formatting4(void)
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);
FLOW_TYPE_FRAGMENT, 0x01, 0x01, 0x82, 0x02,
);
net_addr_flow4 *input;
NET_ADDR_FLOW4_(input, ip4_build(5, 6, 7, 0), 24, nlri);
/* RFC 8955 4.3.1 Example 1 */
expect[1] = "flow4 { dst 192.0.2.0/24; proto 6; port 25; }";
input[1] = NET_ADDR_FLOW4_NLRI(
0x0b,
0x01, 0x18, 0xc0, 0x00, 0x02,
0x03, 0x81, 0x06,
0x04, 0x81, 0x19,
);
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; }";
/* RFC 8955 4.3.2 Example 2 */
expect[2] = "flow4 { dst 192.0.2.0/24; src 203.0.113.0/24; port 137..139,8080; }";
input[2] = NET_ADDR_FLOW4_NLRI(
0x12,
0x01, 0x18, 0xc0, 0x00, 0x02,
0x02, 0x18, 0xcb, 0x00, 0x71,
0x04, 0x03, 0x89, 0x45, 0x8b, 0x91, 0x1f, 0x90,
);
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);
/* RFC 8955 4.3.3 Example 3 */
expect[3] = "flow4 { dst 192.0.2.1/32; fragment !0x0/0x5; }";
input[3] = NET_ADDR_FLOW4_NLRI(
0x09,
0x01, 0x20, 0xc0, 0x00, 0x02, 0x01,
0x0c, 0x80, 0x05,
);
/* Run the tests */
for (uint i = 0; i < ARRAY_SIZE(input); i++)
{
char buf[1024];
uint len = flow4_net_format(buf, sizeof(buf), input[i]);
bt_debug(" expect: '%s',\n output: '%s'\n", expect[i], buf);
bt_assert(!strcmp(buf, expect[i]));
bt_assert(len == strlen(expect[i]));
}
return 1;
}
@ -637,26 +671,46 @@ t_formatting4(void)
static int
t_formatting6(void)
{
char b[1024];
const net_addr_flow6 *input[3];
const char *expect[3];
byte nlri[] = {
// (ip6_build(0, 1, 0x12345678, 0x98000000), 103, nlri0);
expect[0] = "flow6 { dst ::1:1234:5678:9800:0/103 offset 61; src c000::/8; next header 6; port 20..40,273; label < 500000; }";
input[0] = NET_ADDR_FLOW6_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, 0xa4, 0x00, 0x07, 0xa1, 0x20,
};
*nlri = (u8) sizeof(nlri);
);
net_addr_flow6 *input;
NET_ADDR_FLOW6_(input, ip6_build(0, 1, 0x12345678, 0x98000000), 103, nlri);
/* RFC 8956 3.8.1 Example 1 */
expect[1] = "flow6 { dst 2001:db8::/32; src ::1234:5678:9a00:0/104 offset 64; next header 6; }";
input[1] = NET_ADDR_FLOW6_(ip6_build(0x20010db8, 0, 0, 0), 32, ((const byte[]) {
0x12,
0x01, 0x20, 0x00, 0x20, 0x01, 0x0d, 0xb8,
0x02, 0x68, 0x40, 0x12, 0x34, 0x56, 0x78, 0x9a,
0x03, 0x81, 0x06,
}));
const char *expect = "flow6 { dst ::1:1234:5678:9800:0/103 offset 61; src c000::/8; next header 6; port 20..40,273; label < 500000; }";
/* RFC 8956 3.8.2 Example 2 */
expect[2] = "flow6 { dst 2001:db8::/32; src ::1234:5678:9a00:0/104 offset 65; }";
input[2] = NET_ADDR_FLOW6_(ip6_build(0x20010db8, 0, 0, 0), 32, ((const byte[]) {
0x0f,
0x01, 0x20, 0x00, 0x20, 0x01, 0x0d, 0xb8,
0x02, 0x68, 0x41, 0x24, 0x68, 0xac, 0xf1, 0x34,
}));
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);
/* Run the tests */
for (uint i = 0; i < ARRAY_SIZE(input); i++)
{
char buf[1024];
uint len = flow6_net_format(buf, sizeof(buf), input[i]);
bt_debug(" expect: '%s',\n output: '%s'\n", expect[i], buf);
bt_assert(!strcmp(buf, expect[i]));
bt_assert(len == strlen(expect[i]));
}
return 1;
}