Newer
Older
bnet "github.com/bio-routing/bio-rd/net"
"github.com/stretchr/testify/assert"
"github.com/taktv6/tflow2/convert"
)
type test struct {
testNum int
input []byte
wantFail bool
expected interface{}
}
type decodeFunc func(*bytes.Buffer) (interface{}, error)
func BenchmarkDecodeUpdateMsg(b *testing.B) {
input := []byte{0, 5, 8, 10, 16, 192, 168,
0, 53, // Total Path Attribute Length
255, // Attribute flags
1, // Attribute Type code (ORIGIN)
0, 1, // Length
2, // INCOMPLETE
0, // Attribute flags
2, // Attribute Type code (AS Path)
12, // Length
2, // Type = AS_SEQUENCE
59, 65, // AS15169
12, 248, // AS3320
0, // Attribute flags
3, // Attribute Type code (Next Hop)
4, // Length
10, 11, 12, 13, // Next Hop
0, // Attribute flags
4, // Attribute Type code (MED)
4, // Length
0, 0, 1, 0, // MED 256
0, // Attribute flags
5, // Attribute Type code (Local Pref)
4, // Length
0, 0, 1, 0, // Local Pref 256
0, // Attribute flags
6, // Attribute Type code (Atomic Aggregate)
0, // Length
0, // Attribute flags
7, // Attribute Type code (Atomic Aggregate)
6, // Length
1, 2, // ASN
10, 11, 12, 13, // Address
8, 11, // 11.0.0.0/8
}
for i := 0; i < b.N; i++ {
buf := bytes.NewBuffer(input)
_, err := decodeUpdateMsg(buf, uint16(len(input)), &DecodeOptions{})
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
if err != nil {
fmt.Printf("decodeUpdateMsg failed: %v\n", err)
}
//buf.Next(1)
}
}
func TestDecode(t *testing.T) {
tests := []test{
{
// Proper packet
testNum: 1,
input: []byte{
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // Marker
0, 19, // Length
4, // Type = Keepalive
},
wantFail: false,
expected: &BGPMessage{
Header: &BGPHeader{
Length: 19,
Type: 4,
},
},
},
{
// Invalid marker
testNum: 2,
input: []byte{
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, // Marker
0, 19, // Length
4, // Type = Keepalive
},
wantFail: true,
expected: &BGPMessage{
Header: &BGPHeader{
Length: 19,
Type: 4,
},
},
},
{
// Proper NOTIFICATION packet
testNum: 3,
input: []byte{
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // Marker
0, 21, // Length
3, // Type = Notification
1, 1, // Message Header Error, Connection Not Synchronized.
},
wantFail: false,
expected: &BGPMessage{
Header: &BGPHeader{
Length: 21,
Type: 3,
},
Body: &BGPNotification{
ErrorCode: 1,
ErrorSubcode: 1,
},
},
},
{
// Proper OPEN packet
testNum: 4,
input: []byte{
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // Marker
0, 29, // Length
1, // Type = Open
4, // Version
0, 200, //ASN,
0, 15, // Holdtime
10, 20, 30, 40, // BGP Identifier
0, // Opt Parm Len
},
wantFail: false,
expected: &BGPMessage{
Header: &BGPHeader{
Length: 29,
Type: 1,
},
Body: &BGPOpen{
Version: 4,
HoldTime: 15,
BGPIdentifier: uint32(169090600),
OptParmLen: 0,
OptParams: []OptParam{},
},
},
},
{
// Incomplete OPEN packet
testNum: 5,
input: []byte{
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // Marker
0, 28, // Length
1, // Type = Open
4, // Version
0, 200, //ASN,
0, 15, // Holdtime
0, 0, 0, 100, // BGP Identifier
},
wantFail: true,
expected: &BGPMessage{
Header: &BGPHeader{
Length: 28,
Type: 1,
},
Body: &BGPOpen{
Version: 4,
HoldTime: 15,
BGPIdentifier: uint32(100),
},
},
},
{
testNum: 6,
input: []byte{
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // Marker
0, 28, // Length
2, // Type = Update
0, 5, 8, 10, 16, 192, 168, 0, 0, // 2 withdraws
},
wantFail: false,
expected: &BGPMessage{
Header: &BGPHeader{
Length: 28,
Type: 2,
},
Body: &BGPUpdate{
WithdrawnRoutesLen: 5,
WithdrawnRoutes: &NLRI{
Prefix: bnet.NewPfx(bnet.IPv4FromOctets(10, 0, 0, 0), 8),
Prefix: bnet.NewPfx(bnet.IPv4FromOctets(192, 168, 0, 0), 16),
},
},
},
},
},
{
testNum: 7,
input: []byte{
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // Marker
0, 28, // Length
5, // Type = Invalid
0, 5, 8, 10, 16, 192, 168, 0, 0, // Some more stuff
},
wantFail: true,
},
{
testNum: 8,
input: []byte{
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
0, 21,
3,
6, 4,
},
wantFail: false,
expected: &BGPMessage{
Header: &BGPHeader{
Length: 21,
Type: 3,
},
Body: &BGPNotification{
ErrorCode: 6,
ErrorSubcode: 4,
},
},
},
}
for _, test := range tests {
buf := bytes.NewBuffer(test.input)
msg, err := Decode(buf, &DecodeOptions{})
if err != nil && !test.wantFail {
t.Errorf("Unexpected error in test %d: %v", test.testNum, err)
continue
}
if err == nil && test.wantFail {
t.Errorf("Expected error did not happen in test %d", test.testNum)
continue
}
if err != nil && test.wantFail {
continue
}
if msg == nil {
t.Errorf("Unexpected nil result in test %d. Expected: %v", test.testNum, test.expected)
continue
}
assert.Equalf(t, test.expected, msg, "Test: %d", test.testNum)
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
}
}
func TestDecodeNotificationMsg(t *testing.T) {
tests := []struct {
name string
input []byte
wantFail bool
expected interface{}
}{
{
name: "Invalid error code",
input: []byte{0, 0},
wantFail: true,
},
{
name: "Invalid error code #2",
input: []byte{7, 0},
wantFail: true,
},
{
name: "Invalid ErrSubCode (Header)",
input: []byte{1, 0},
wantFail: true,
},
{
name: "Invalid ErrSubCode (Header) #2",
input: []byte{1, 4},
wantFail: true,
},
{
name: "Invalid ErrSubCode (Open)",
input: []byte{2, 0},
wantFail: true,
},
{
name: "Invalid ErrSubCode (Open) #2",
input: []byte{2, 7},
wantFail: true,
},
{
name: "Invalid ErrSubCode (Open) #3",
input: []byte{2, 5},
wantFail: true,
},
{
name: "Invalid ErrSubCode (Update)",
input: []byte{3, 0},
wantFail: true,
},
{
name: "Invalid ErrSubCode (Update) #2",
input: []byte{3, 12},
wantFail: true,
},
{
name: "Invalid ErrSubCode (Update) #3",
input: []byte{3, 7},
wantFail: true,
},
{
name: "Valid Notification",
input: []byte{2, 2},
wantFail: false,
expected: &BGPNotification{
ErrorCode: 2,
ErrorSubcode: 2,
},
},
{
name: "Empty input",
input: []byte{},
wantFail: true,
},
{
name: "Hold Timer Expired",
input: []byte{4, 0},
wantFail: false,
expected: &BGPNotification{
ErrorCode: 4,
ErrorSubcode: 0,
},
},
{
name: "Hold Timer Expired (invalid subcode)",
input: []byte{4, 1},
wantFail: true,
},
{
name: "FSM Error",
input: []byte{5, 0},
wantFail: false,
expected: &BGPNotification{
ErrorCode: 5,
ErrorSubcode: 0,
},
},
{
name: "FSM Error (invalid subcode)",
input: []byte{5, 1},
wantFail: true,
},
{
name: "Cease",
input: []byte{6, 0},
wantFail: false,
expected: &BGPNotification{
ErrorCode: 6,
ErrorSubcode: 0,
},
},
{
name: "Cease (invalid subcode)",
input: []byte{6, 1},
wantFail: true,
},
}
for _, test := range tests {
res, err := decodeNotificationMsg(bytes.NewBuffer(test.input))
if test.wantFail {
if err != nil {
continue
}
t.Errorf("Expected error did not happen for test %q", test.name)
continue
}
if err != nil {
t.Errorf("Unexpected failure for test %q: %v", test.name, err)
continue
}
assert.Equal(t, test.expected, res)
}
}
func TestDecodeUpdateMsg(t *testing.T) {
tests := []struct {
testNum int
input []byte
explicitLength uint16
wantFail bool
expected interface{}
}{
{
// 2 withdraws only, valid update
testNum: 1,
input: []byte{0, 5, 8, 10, 16, 192, 168, 0, 0},
wantFail: false,
expected: &BGPUpdate{
WithdrawnRoutesLen: 5,
WithdrawnRoutes: &NLRI{
Prefix: bnet.NewPfx(bnet.IPv4FromOctets(10, 0, 0, 0), 8),
Prefix: bnet.NewPfx(bnet.IPv4FromOctets(192, 168, 0, 0), 16),
},
},
},
},
{
// 2 withdraws with one path attribute (ORIGIN), valid update
testNum: 2,
input: []byte{
0, 5, // Withdrawn Routes Length
8, 10, // 10.0.0.0/8
16, 192, 168, // 192.168.0.0/16
0, 5, // Total Path Attribute Length
255, // Attribute flags
1, // Attribute Type code
0, 1, // Length
2, // INCOMPLETE
},
wantFail: false,
expected: &BGPUpdate{
WithdrawnRoutesLen: 5,
WithdrawnRoutes: &NLRI{
Prefix: bnet.NewPfx(bnet.IPv4FromOctets(10, 0, 0, 0), 8),
Prefix: bnet.NewPfx(bnet.IPv4FromOctets(192, 168, 0, 0), 16),
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
},
},
TotalPathAttrLen: 5,
PathAttributes: &PathAttribute{
Optional: true,
Transitive: true,
Partial: true,
ExtendedLength: true,
Length: 1,
TypeCode: 1,
Value: uint8(2),
},
},
},
{
// 2 withdraws with two path attributes (ORIGIN + ASPath), valid update
testNum: 3,
input: []byte{0, 5, 8, 10, 16, 192, 168,
0, 14, // Total Path Attribute Length
255, // Attribute flags
1, // Attribute Type code (ORIGIN)
0, 1, // Length
2, // INCOMPLETE
0, // Attribute flags
2, // Attribute Type code (AS Path)
6, // Length
2, // Type = AS_SEQUENCE
59, 65, // AS15169
12, 248, // AS3320
},
wantFail: false,
expected: &BGPUpdate{
WithdrawnRoutesLen: 5,
WithdrawnRoutes: &NLRI{
Prefix: bnet.NewPfx(bnet.IPv4FromOctets(10, 0, 0, 0), 8),
Prefix: bnet.NewPfx(bnet.IPv4FromOctets(192, 168, 0, 0), 16),
},
},
TotalPathAttrLen: 14,
PathAttributes: &PathAttribute{
Optional: true,
Transitive: true,
Partial: true,
ExtendedLength: true,
Length: 1,
TypeCode: 1,
Value: uint8(2),
Next: &PathAttribute{
Optional: false,
Transitive: false,
Partial: false,
ExtendedLength: false,
Length: 6,
TypeCode: 2,
ASNs: []uint32{
15169,
3320,
},
},
},
},
},
},
},
{
// 2 withdraws with two path attributes (ORIGIN + ASPath), invalid AS Path segment type
testNum: 4,
input: []byte{0, 5, 8, 10, 16, 192, 168,
0, 13, // Total Path Attribute Length
255, // Attribute flags
1, // Attribute Type code (ORIGIN)
0, 1, // Length
2, // INCOMPLETE
0, // Attribute flags
2, // Attribute Type code (AS Path)
6, // Length
1, // Type = AS_SET
},
wantFail: true,
},
{
// 2 withdraws with two path attributes (ORIGIN + ASPath), invalid AS Path segment member count
testNum: 5,
input: []byte{0, 5, 8, 10, 16, 192, 168,
0, 13, // Total Path Attribute Length
255, // Attribute flags
1, // Attribute Type code (ORIGIN)
0, 1, // Length
2, // INCOMPLETE
0, // Attribute flags
2, // Attribute Type code (AS Path)
6, // Length
3, // Type = INVALID
59, 65, // AS15169
12, 248, // AS3320
},
wantFail: true,
},
{
// 2 withdraws with two path attributes (ORIGIN + ASPath), valid update
testNum: 6,
input: []byte{0, 5, 8, 10, 16, 192, 168,
0, 20, // Total Path Attribute Length
255, // Attribute flags
1, // Attribute Type code (ORIGIN)
0, 1, // Length
2, // INCOMPLETE
0, // Attribute flags
2, // Attribute Type code (AS Path)
12, // Length
2, // Type = AS_SEQUENCE
59, 65, // AS15169
12, 248, // AS3320
},
wantFail: false,
expected: &BGPUpdate{
WithdrawnRoutesLen: 5,
WithdrawnRoutes: &NLRI{
Prefix: bnet.NewPfx(bnet.IPv4FromOctets(10, 0, 0, 0), 8),
Prefix: bnet.NewPfx(bnet.IPv4FromOctets(192, 168, 0, 0), 16),
},
},
TotalPathAttrLen: 20,
PathAttributes: &PathAttribute{
Optional: true,
Transitive: true,
Partial: true,
ExtendedLength: true,
Length: 1,
TypeCode: 1,
Value: uint8(2),
Next: &PathAttribute{
Optional: false,
Transitive: false,
Partial: false,
ExtendedLength: false,
Length: 12,
TypeCode: 2,
ASNs: []uint32{
15169,
3320,
},
},
},
},
},
},
},
{
// 2 withdraws with 3 path attributes (ORIGIN + ASPath, NH), valid update
testNum: 7,
input: []byte{0, 5, 8, 10, 16, 192, 168,
0, 27, // Total Path Attribute Length
255, // Attribute flags
1, // Attribute Type code (ORIGIN)
0, 1, // Length
2, // INCOMPLETE
0, // Attribute flags
2, // Attribute Type code (AS Path)
12, // Length
2, // Type = AS_SEQUENCE
59, 65, // AS15169
12, 248, // AS3320
0, // Attribute flags
3, // Attribute Type code (Next Hop)
4, // Length
10, 11, 12, 13, // Next Hop
},
wantFail: false,
expected: &BGPUpdate{
WithdrawnRoutesLen: 5,
WithdrawnRoutes: &NLRI{
Prefix: bnet.NewPfx(bnet.IPv4FromOctets(10, 0, 0, 0), 8),
Prefix: bnet.NewPfx(bnet.IPv4FromOctets(192, 168, 0, 0), 16),
},
},
TotalPathAttrLen: 27,
PathAttributes: &PathAttribute{
Optional: true,
Transitive: true,
Partial: true,
ExtendedLength: true,
Length: 1,
TypeCode: 1,
Value: uint8(2),
Next: &PathAttribute{
Optional: false,
Transitive: false,
Partial: false,
ExtendedLength: false,
Length: 12,
TypeCode: 2,
ASNs: []uint32{
15169,
3320,
},
},
},
Next: &PathAttribute{
Optional: false,
Transitive: false,
Partial: false,
ExtendedLength: false,
Length: 4,
TypeCode: 3,
Value: bnet.IPv4FromOctets(10, 11, 12, 13),
},
},
},
},
},
{
// 2 withdraws with 4 path attributes (ORIGIN + ASPath, NH, MED), valid update
testNum: 8,
input: []byte{0, 5, 8, 10, 16, 192, 168,
0, 34, // Total Path Attribute Length
255, // Attribute flags
1, // Attribute Type code (ORIGIN)
0, 1, // Length
2, // INCOMPLETE
0, // Attribute flags
2, // Attribute Type code (AS Path)
12, // Length
2, // Type = AS_SEQUENCE
59, 65, // AS15169
12, 248, // AS3320
0, // Attribute flags
3, // Attribute Type code (Next Hop)
4, // Length
10, 11, 12, 13, // Next Hop
0, // Attribute flags
4, // Attribute Type code (Next Hop)
4, // Length
0, 0, 1, 0, // MED 256
},
wantFail: false,
expected: &BGPUpdate{
WithdrawnRoutesLen: 5,
WithdrawnRoutes: &NLRI{
Prefix: bnet.NewPfx(bnet.IPv4FromOctets(10, 0, 0, 0), 8),
Prefix: bnet.NewPfx(bnet.IPv4FromOctets(192, 168, 0, 0), 16),
},
},
TotalPathAttrLen: 34,
PathAttributes: &PathAttribute{
Optional: true,
Transitive: true,
Partial: true,
ExtendedLength: true,
Length: 1,
TypeCode: 1,
Value: uint8(2),
Next: &PathAttribute{
Optional: false,
Transitive: false,
Partial: false,
ExtendedLength: false,
Length: 12,
TypeCode: 2,
ASNs: []uint32{
15169,
3320,
},
},
},
Next: &PathAttribute{
Optional: false,
Transitive: false,
Partial: false,
ExtendedLength: false,
Length: 4,
TypeCode: 3,
Value: bnet.IPv4FromOctets(10, 11, 12, 13),
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
Next: &PathAttribute{
Optional: false,
Transitive: false,
Partial: false,
ExtendedLength: false,
Length: 4,
TypeCode: 4,
Value: uint32(256),
},
},
},
},
},
},
{
// 2 withdraws with 4 path attributes (ORIGIN + ASPath, NH, MED, Local Pref), valid update
testNum: 9,
input: []byte{0, 5, 8, 10, 16, 192, 168,
0, 41, // Total Path Attribute Length
255, // Attribute flags
1, // Attribute Type code (ORIGIN)
0, 1, // Length
2, // INCOMPLETE
0, // Attribute flags
2, // Attribute Type code (AS Path)
12, // Length
2, // Type = AS_SEQUENCE
59, 65, // AS15169
12, 248, // AS3320
0, // Attribute flags
3, // Attribute Type code (Next Hop)
4, // Length
10, 11, 12, 13, // Next Hop
0, // Attribute flags
4, // Attribute Type code (MED)
4, // Length
0, 0, 1, 0, // MED 256
0, // Attribute flags
5, // Attribute Type code (Local Pref)
4, // Length
0, 0, 1, 0, // Local Pref 256
},
wantFail: false,
expected: &BGPUpdate{
WithdrawnRoutesLen: 5,
WithdrawnRoutes: &NLRI{
Prefix: bnet.NewPfx(bnet.IPv4FromOctets(10, 0, 0, 0), 8),
Prefix: bnet.NewPfx(bnet.IPv4FromOctets(192, 168, 0, 0), 16),
},
},
TotalPathAttrLen: 41,
PathAttributes: &PathAttribute{
Optional: true,
Transitive: true,
Partial: true,
ExtendedLength: true,
Length: 1,
TypeCode: 1,
Value: uint8(2),
Next: &PathAttribute{
Optional: false,
Transitive: false,
Partial: false,
ExtendedLength: false,
Length: 12,
TypeCode: 2,
ASNs: []uint32{
15169,
3320,
},
},
},
Next: &PathAttribute{
Optional: false,
Transitive: false,
Partial: false,
ExtendedLength: false,
Length: 4,
TypeCode: 3,
Value: bnet.IPv4FromOctets(10, 11, 12, 13),
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
Next: &PathAttribute{
Optional: false,
Transitive: false,
Partial: false,
ExtendedLength: false,
Length: 4,
TypeCode: 4,
Value: uint32(256),
Next: &PathAttribute{
Optional: false,
Transitive: false,
Partial: false,
ExtendedLength: false,
Length: 4,
TypeCode: 5,
Value: uint32(256),
},
},
},
},
},
},
},
{
// 2 withdraws with 6 path attributes (ORIGIN, ASPath, NH, MED, Local Pref, Atomi Aggregate), valid update
testNum: 9,
input: []byte{0, 5, 8, 10, 16, 192, 168,
0, 44, // Total Path Attribute Length
255, // Attribute flags
1, // Attribute Type code (ORIGIN)
0, 1, // Length
2, // INCOMPLETE
0, // Attribute flags
2, // Attribute Type code (AS Path)
12, // Length
2, // Type = AS_SEQUENCE
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
59, 65, // AS15169
12, 248, // AS3320
0, // Attribute flags
3, // Attribute Type code (Next Hop)
4, // Length
10, 11, 12, 13, // Next Hop
0, // Attribute flags
4, // Attribute Type code (MED)
4, // Length
0, 0, 1, 0, // MED 256
0, // Attribute flags
5, // Attribute Type code (Local Pref)
4, // Length
0, 0, 1, 0, // Local Pref 256
0, // Attribute flags
6, // Attribute Type code (Atomic Aggregate)
0, // Length
},
wantFail: false,
expected: &BGPUpdate{
WithdrawnRoutesLen: 5,
WithdrawnRoutes: &NLRI{
Prefix: bnet.NewPfx(bnet.IPv4FromOctets(10, 0, 0, 0), 8),
Prefix: bnet.NewPfx(bnet.IPv4FromOctets(192, 168, 0, 0), 16),
},
},
TotalPathAttrLen: 44,
PathAttributes: &PathAttribute{
Optional: true,
Transitive: true,
Partial: true,
ExtendedLength: true,
Length: 1,
TypeCode: 1,
Value: uint8(2),
Next: &PathAttribute{
Optional: false,
Transitive: false,
Partial: false,
ExtendedLength: false,
Length: 12,
TypeCode: 2,