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|
#include <zebra.h>
#include "vty.h"
#include "stream.h"
#include "privs.h"
#include "memory.h"
#include "bgpd/bgpd.h"
#include "bgpd/bgp_open.h"
#include "bgpd/bgp_debug.h"
#define OPEN 0
#define DYNCAP 1
/* need these to link in libbgp */
struct zebra_privs_t *bgpd_privs = NULL;
struct thread_master *master = NULL;
static int failed = 0;
/* test segments to parse and validate, and use for other tests */
static struct test_segment {
const char *name;
const char *desc;
const u_char data[1024];
int len;
#define SHOULD_PARSE 0
#define SHOULD_ERR -1
int parses; /* whether it should parse or not */
} test_segments [] =
{
/* 0 */
{ "caphdr",
"capability header, and no more",
{ CAPABILITY_CODE_REFRESH, 0x0 },
2, SHOULD_PARSE,
},
/* 1 */
{ "nodata",
"header, no data but length says there is",
{ 0x1, 0xa },
2, SHOULD_ERR,
},
/* 2 */
{ "padded",
"valid, with padding",
{ CAPABILITY_CODE_REFRESH, 0x2, 0x0, 0x0 },
4, SHOULD_PARSE,
},
/* 3 */
{ "minsize",
"violates minsize requirement",
{ CAPABILITY_CODE_ORF, 0x2, 0x0, 0x0 },
4, SHOULD_ERR,
},
/* 4 */
{ "MP1",
"MP IP/Uni",
{ 0x1, 0x4, 0x0, 0x1, 0x0, 0x1 },
6, SHOULD_PARSE,
},
/* 5 */
{ "MP2",
"MP IP/Multicast",
{ CAPABILITY_CODE_MP, 0x4, 0x0, 0x1, 0x0, 0x2 },
6, SHOULD_PARSE,
},
/* 6 */
{ "MP3",
"MP IP6/VPNv4",
{ CAPABILITY_CODE_MP, 0x4, 0x0, 0x2, 0x0, 0x80 },
6, SHOULD_PARSE, /* parses, but invalid afi,safi */
},
/* 7 */
{ "MP5",
"MP IP6/MPLS-VPN",
{ CAPABILITY_CODE_MP, 0x4, 0x0, 0x2, 0x0, 0x4 },
6, SHOULD_PARSE,
},
/* 8 */
{ "MP6",
"MP IP4/VPNv4",
{ CAPABILITY_CODE_MP, 0x4, 0x0, 0x1, 0x0, 0x80 },
6, SHOULD_PARSE,
},
/* 9 */
{ "MP7",
"MP IP4/VPNv6",
{ CAPABILITY_CODE_MP, 0x4, 0x0, 0x1, 0x0, 0x81 },
6, SHOULD_PARSE, /* parses, but invalid afi,safi tuple! - manually inspect */
},
/* 10 */
{ "MP8",
"MP unknown AFI",
{ CAPABILITY_CODE_MP, 0x4, 0x0, 0xa, 0x0, 0x81 },
6, SHOULD_PARSE, /* parses, but unknown */
},
/* 11 */
{ "MP-short",
"MP IP4/Unicast, length too short (< minimum)",
{ CAPABILITY_CODE_MP, 0x2, 0x0, 0x1, 0x0, 0x1 },
6, SHOULD_ERR,
},
/* 12 */
{ "MP-overflow",
"MP IP4/Unicast, length too long",
{ CAPABILITY_CODE_MP, 0x6, 0x0, 0x1, 0x0, 0x1 },
6, SHOULD_ERR,
},
/* 13 */
{ "ORF",
"ORF, simple, single entry, single tuple",
{ /* hdr */ CAPABILITY_CODE_ORF, 0x7,
/* mpc */ 0x0, 0x1, 0x0, 0x1,
/* num */ 0x1,
/* tuples */ 0x40, 0x3
},
9, SHOULD_PARSE,
},
/* 14 */
{ "ORF-many",
"ORF, multi entry/tuple",
{ /* hdr */ CAPABILITY_CODE_ORF, 0x21,
/* mpc */ 0x0, 0x1, 0x0, 0x1,
/* num */ 0x3,
/* tuples */ 0x40, ORF_MODE_BOTH,
0x80, ORF_MODE_RECEIVE,
0x80, ORF_MODE_SEND,
/* mpc */ 0x0, 0x2, 0x0, 0x1,
/* num */ 0x3,
/* tuples */ 0x40, ORF_MODE_BOTH,
0x80, ORF_MODE_RECEIVE,
0x80, ORF_MODE_SEND,
/* mpc */ 0x0, 0x2, 0x0, 0x2,
/* num */ 0x3,
/* tuples */ 0x40, ORF_MODE_RECEIVE,
0x80, ORF_MODE_SEND,
0x80, ORF_MODE_BOTH,
},
35, SHOULD_PARSE,
},
/* 15 */
{ "ORFlo",
"ORF, multi entry/tuple, hdr length too short",
{ /* hdr */ CAPABILITY_CODE_ORF, 0x15,
/* mpc */ 0x0, 0x1, 0x0, 0x1,
/* num */ 0x3,
/* tuples */ 0x40, 0x3,
0x80, 0x1,
0x80, 0x2,
/* mpc */ 0x0, 0x1, 0x0, 0x1,
/* num */ 0x3,
/* tuples */ 0x40, 0x3,
0x80, 0x1,
0x80, 0x2,
/* mpc */ 0x0, 0x2, 0x0, 0x2,
/* num */ 0x3,
/* tuples */ 0x40, 0x3,
0x80, 0x1,
0x80, 0x2,
},
35, SHOULD_ERR, /* It should error on invalid Route-Refresh.. */
},
/* 16 */
{ "ORFlu",
"ORF, multi entry/tuple, length too long",
{ /* hdr */ 0x3, 0x22,
/* mpc */ 0x0, 0x1, 0x0, 0x1,
/* num */ 0x3,
/* tuples */ 0x40, 0x3,
0x80, 0x1,
0x80, 0x2,
/* mpc */ 0x0, 0x2, 0x0, 0x1,
/* num */ 0x3,
/* tuples */ 0x40, 0x3,
0x80, 0x1,
0x80, 0x2,
/* mpc */ 0x0, 0x2, 0x0, 0x2,
/* num */ 0x3,
/* tuples */ 0x40, 0x3,
0x80, 0x1,
0x80, 0x2,
},
35, SHOULD_ERR
},
/* 17 */
{ "ORFnu",
"ORF, multi entry/tuple, entry number too long",
{ /* hdr */ 0x3, 0x21,
/* mpc */ 0x0, 0x1, 0x0, 0x1,
/* num */ 0x3,
/* tuples */ 0x40, 0x3,
0x80, 0x1,
0x80, 0x2,
/* mpc */ 0x0, 0x2, 0x0, 0x1,
/* num */ 0x4,
/* tuples */ 0x40, 0x3,
0x80, 0x1,
0x80, 0x2,
/* mpc */ 0x0, 0x2, 0x0, 0x2,
/* num */ 0x3,
/* tuples */ 0x40, 0x3,
0x80, 0x1,
0x80, 0x2,
},
35, SHOULD_PARSE, /* parses, but last few tuples should be gibberish */
},
/* 18 */
{ "ORFno",
"ORF, multi entry/tuple, entry number too short",
{ /* hdr */ 0x3, 0x21,
/* mpc */ 0x0, 0x1, 0x0, 0x1,
/* num */ 0x3,
/* tuples */ 0x40, 0x3,
0x80, 0x1,
0x80, 0x2,
/* mpc */ 0x0, 0x2, 0x0, 0x1,
/* num */ 0x1,
/* tuples */ 0x40, 0x3,
0x80, 0x1,
0x80, 0x2,
/* mpc */ 0x0, 0x2, 0x0, 0x2,
/* num */ 0x3,
/* tuples */ 0x40, 0x3,
0x80, 0x1,
0x80, 0x2,
},
35, SHOULD_PARSE, /* Parses, but should get gibberish afi/safis */
},
/* 17 */
{ "ORFpad",
"ORF, multi entry/tuple, padded to align",
{ /* hdr */ 0x3, 0x22,
/* mpc */ 0x0, 0x1, 0x0, 0x1,
/* num */ 0x3,
/* tuples */ 0x40, 0x3,
0x80, 0x1,
0x80, 0x2,
/* mpc */ 0x0, 0x2, 0x0, 0x1,
/* num */ 0x3,
/* tuples */ 0x40, 0x3,
0x80, 0x1,
0x80, 0x2,
/* mpc */ 0x0, 0x2, 0x0, 0x2,
/* num */ 0x3,
/* tuples */ 0x40, 0x3,
0x80, 0x1,
0x80, 0x2,
0x00,
},
36, SHOULD_PARSE,
},
/* 19 */
{ "AS4",
"AS4 capability",
{ 0x41, 0x4, 0xab, 0xcd, 0xef, 0x12 },
6, SHOULD_PARSE,
},
/* 20 */
{ "GR",
"GR capability",
{ /* hdr */ CAPABILITY_CODE_RESTART, 0xe,
/* R-bit, time */ 0xf1, 0x12,
/* afi */ 0x0, 0x1,
/* safi */ 0x1,
/* flags */ 0xf,
/* afi */ 0x0, 0x2,
/* safi */ 0x1,
/* flags */ 0x0,
/* afi */ 0x0, 0x2,
/* safi */ 0x2,
/* flags */ 0x1,
},
16, SHOULD_PARSE,
},
/* 21 */
{ "GR-short",
"GR capability, but header length too short",
{ /* hdr */ 0x40, 0xa,
/* R-bit, time */ 0xf1, 0x12,
/* afi */ 0x0, 0x1,
/* safi */ 0x1,
/* flags */ 0xf,
/* afi */ 0x0, 0x2,
/* safi */ 0x1,
/* flags */ 0x0,
/* afi */ 0x0, 0x2,
/* safi */ 0x2,
/* flags */ 0x1,
},
16, SHOULD_PARSE,
},
/* 22 */
{ "GR-long",
"GR capability, but header length too long",
{ /* hdr */ 0x40, 0xf,
/* R-bit, time */ 0xf1, 0x12,
/* afi */ 0x0, 0x1,
/* safi */ 0x1,
/* flags */ 0xf,
/* afi */ 0x0, 0x2,
/* safi */ 0x1,
/* flags */ 0x0,
/* afi */ 0x0, 0x2,
/* safi */ 0x2,
},
16, SHOULD_ERR,
},
{ "GR-trunc",
"GR capability, but truncated",
{ /* hdr */ 0x40, 0xf,
/* R-bit, time */ 0xf1, 0x12,
/* afi */ 0x0, 0x1,
/* safi */ 0x1,
/* flags */ 0xf,
/* afi */ 0x0, 0x2,
/* safi */ 0x1,
/* flags */ 0x0,
/* afi */ 0x0, 0x2,
/* safi */ 0x2,
/* flags */ 0x1,
},
15, SHOULD_ERR,
},
{ "dyn-old",
"Dynamic capability (deprecated version)",
{ CAPABILITY_CODE_DYNAMIC, 0x0 },
2, SHOULD_PARSE,
},
{ NULL, NULL, {0}, 0, 0}
};
struct test_segment dynamic_cap_msgs[] =
{
{ "DynCap",
"Dynamic Capability Message, IP/Multicast",
{ 0x0, 0x1, 0x4, 0x0, 0x1, 0x0, 0x2 },
7, SHOULD_PARSE, /* horrible alignment, just as with ORF */
},
{ "DynCapLong",
"Dynamic Capability Message, IP/Multicast, truncated",
{ 0x0, 0x1, 0x4, 0x0, 0x1, 0x0, 0x2 },
5, SHOULD_ERR,
},
{ "DynCapPadded",
"Dynamic Capability Message, IP/Multicast, padded",
{ 0x0, 0x1, 0x4, 0x0, 0x1, 0x0, 0x2, 0x0 },
8, SHOULD_ERR, /* No way to tell padding from data.. */
},
{ "DynCapMPCpadded",
"Dynamic Capability Message, IP/Multicast, cap data padded",
{ 0x0, 0x1, 0x5, 0x0, 0x1, 0x0, 0x2, 0x0 },
8, SHOULD_PARSE, /* You can though add padding to the capability data */
},
{ "DynCapMPCoverflow",
"Dynamic Capability Message, IP/Multicast, cap data != length",
{ 0x0, 0x1, 0x3, 0x0, 0x1, 0x0, 0x2, 0x0 },
8, SHOULD_ERR,
},
{ NULL, NULL, {0}, 0, 0}
};
/* basic parsing test */
static void
parse_test (struct peer *peer, struct test_segment *t, int type)
{
int ret;
int capability = 0;
stream_reset (peer->ibuf);
switch (type)
{
case OPEN:
stream_putc (peer->ibuf, BGP_OPEN_OPT_CAP);
stream_putc (peer->ibuf, t->len);
break;
case DYNCAP:
/* for (i = 0; i < BGP_MARKER_SIZE; i++)
stream_putc (peer->, 0xff);
stream_putw (s, 0);
stream_putc (s, BGP_MSG_CAPABILITY);*/
break;
}
stream_write (peer->ibuf, t->data, t->len);
printf ("%s: %s\n", t->name, t->desc);
switch (type)
{
case OPEN:
ret = bgp_open_option_parse (peer, t->len + 2, &capability);
break;
case DYNCAP:
ret = bgp_capability_receive (peer, t->len);
break;
default:
printf ("unknown type %u\n", type);
exit(1);
}
printf ("parsed?: %s\n", ret ? "no" : "yes");
if (ret == t->parses)
printf ("OK\n");
else
{
printf ("failed\n");
failed++;
}
printf ("\n");
}
static struct bgp *bgp;
static as_t asn = 100;
int
main (void)
{
struct peer *peer;
int i, j;
conf_bgp_debug_fsm = -1UL;
conf_bgp_debug_events = -1UL;
conf_bgp_debug_packet = -1UL;
conf_bgp_debug_normal = -1UL;
term_bgp_debug_fsm = -1UL;
term_bgp_debug_events = -1UL;
term_bgp_debug_packet = -1UL;
term_bgp_debug_normal = -1UL;
master = thread_master_create ();
bgp_master_init ();
if (bgp_get (&bgp, &asn, NULL))
return -1;
peer = peer_create_accept (bgp);
for (i = AFI_IP; i < AFI_MAX; i++)
for (j = SAFI_UNICAST; j < SAFI_MAX; j++)
peer->afc_nego[i][j] = 1;
i =0;
while (test_segments[i].name)
parse_test (peer, &test_segments[i++], OPEN);
SET_FLAG (peer->cap, PEER_CAP_DYNAMIC_ADV);
peer->status = Established;
i = 0;
while (dynamic_cap_msgs[i].name)
parse_test (peer, &dynamic_cap_msgs[i++], DYNCAP);
printf ("failures: %d\n", failed);
return failed;
}
|
