diff options
Diffstat (limited to 'src/encoding/asn1/asn1_test.go')
| -rw-r--r-- | src/encoding/asn1/asn1_test.go | 1166 |
1 files changed, 1166 insertions, 0 deletions
diff --git a/src/encoding/asn1/asn1_test.go b/src/encoding/asn1/asn1_test.go new file mode 100644 index 0000000..b1e05b9 --- /dev/null +++ b/src/encoding/asn1/asn1_test.go @@ -0,0 +1,1166 @@ +// Copyright 2009 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package asn1 + +import ( + "bytes" + "encoding/hex" + "fmt" + "math" + "math/big" + "reflect" + "strings" + "testing" + "time" +) + +type boolTest struct { + in []byte + ok bool + out bool +} + +var boolTestData = []boolTest{ + {[]byte{0x00}, true, false}, + {[]byte{0xff}, true, true}, + {[]byte{0x00, 0x00}, false, false}, + {[]byte{0xff, 0xff}, false, false}, + {[]byte{0x01}, false, false}, +} + +func TestParseBool(t *testing.T) { + for i, test := range boolTestData { + ret, err := parseBool(test.in) + if (err == nil) != test.ok { + t.Errorf("#%d: Incorrect error result (did fail? %v, expected: %v)", i, err == nil, test.ok) + } + if test.ok && ret != test.out { + t.Errorf("#%d: Bad result: %v (expected %v)", i, ret, test.out) + } + } +} + +type int64Test struct { + in []byte + ok bool + out int64 +} + +var int64TestData = []int64Test{ + {[]byte{0x00}, true, 0}, + {[]byte{0x7f}, true, 127}, + {[]byte{0x00, 0x80}, true, 128}, + {[]byte{0x01, 0x00}, true, 256}, + {[]byte{0x80}, true, -128}, + {[]byte{0xff, 0x7f}, true, -129}, + {[]byte{0xff}, true, -1}, + {[]byte{0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, true, -9223372036854775808}, + {[]byte{0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, false, 0}, + {[]byte{}, false, 0}, + {[]byte{0x00, 0x7f}, false, 0}, + {[]byte{0xff, 0xf0}, false, 0}, +} + +func TestParseInt64(t *testing.T) { + for i, test := range int64TestData { + ret, err := parseInt64(test.in) + if (err == nil) != test.ok { + t.Errorf("#%d: Incorrect error result (did fail? %v, expected: %v)", i, err == nil, test.ok) + } + if test.ok && ret != test.out { + t.Errorf("#%d: Bad result: %v (expected %v)", i, ret, test.out) + } + } +} + +type int32Test struct { + in []byte + ok bool + out int32 +} + +var int32TestData = []int32Test{ + {[]byte{0x00}, true, 0}, + {[]byte{0x7f}, true, 127}, + {[]byte{0x00, 0x80}, true, 128}, + {[]byte{0x01, 0x00}, true, 256}, + {[]byte{0x80}, true, -128}, + {[]byte{0xff, 0x7f}, true, -129}, + {[]byte{0xff}, true, -1}, + {[]byte{0x80, 0x00, 0x00, 0x00}, true, -2147483648}, + {[]byte{0x80, 0x00, 0x00, 0x00, 0x00}, false, 0}, + {[]byte{}, false, 0}, + {[]byte{0x00, 0x7f}, false, 0}, + {[]byte{0xff, 0xf0}, false, 0}, +} + +func TestParseInt32(t *testing.T) { + for i, test := range int32TestData { + ret, err := parseInt32(test.in) + if (err == nil) != test.ok { + t.Errorf("#%d: Incorrect error result (did fail? %v, expected: %v)", i, err == nil, test.ok) + } + if test.ok && int32(ret) != test.out { + t.Errorf("#%d: Bad result: %v (expected %v)", i, ret, test.out) + } + } +} + +var bigIntTests = []struct { + in []byte + ok bool + base10 string +}{ + {[]byte{0xff}, true, "-1"}, + {[]byte{0x00}, true, "0"}, + {[]byte{0x01}, true, "1"}, + {[]byte{0x00, 0xff}, true, "255"}, + {[]byte{0xff, 0x00}, true, "-256"}, + {[]byte{0x01, 0x00}, true, "256"}, + {[]byte{}, false, ""}, + {[]byte{0x00, 0x7f}, false, ""}, + {[]byte{0xff, 0xf0}, false, ""}, +} + +func TestParseBigInt(t *testing.T) { + for i, test := range bigIntTests { + ret, err := parseBigInt(test.in) + if (err == nil) != test.ok { + t.Errorf("#%d: Incorrect error result (did fail? %v, expected: %v)", i, err == nil, test.ok) + } + if test.ok { + if ret.String() != test.base10 { + t.Errorf("#%d: bad result from %x, got %s want %s", i, test.in, ret.String(), test.base10) + } + e, err := makeBigInt(ret) + if err != nil { + t.Errorf("%d: err=%q", i, err) + continue + } + result := make([]byte, e.Len()) + e.Encode(result) + if !bytes.Equal(result, test.in) { + t.Errorf("#%d: got %x from marshaling %s, want %x", i, result, ret, test.in) + } + } + } +} + +type bitStringTest struct { + in []byte + ok bool + out []byte + bitLength int +} + +var bitStringTestData = []bitStringTest{ + {[]byte{}, false, []byte{}, 0}, + {[]byte{0x00}, true, []byte{}, 0}, + {[]byte{0x07, 0x00}, true, []byte{0x00}, 1}, + {[]byte{0x07, 0x01}, false, []byte{}, 0}, + {[]byte{0x07, 0x40}, false, []byte{}, 0}, + {[]byte{0x08, 0x00}, false, []byte{}, 0}, +} + +func TestBitString(t *testing.T) { + for i, test := range bitStringTestData { + ret, err := parseBitString(test.in) + if (err == nil) != test.ok { + t.Errorf("#%d: Incorrect error result (did fail? %v, expected: %v)", i, err == nil, test.ok) + } + if err == nil { + if test.bitLength != ret.BitLength || !bytes.Equal(ret.Bytes, test.out) { + t.Errorf("#%d: Bad result: %v (expected %v %v)", i, ret, test.out, test.bitLength) + } + } + } +} + +func TestBitStringAt(t *testing.T) { + bs := BitString{[]byte{0x82, 0x40}, 16} + if bs.At(0) != 1 { + t.Error("#1: Failed") + } + if bs.At(1) != 0 { + t.Error("#2: Failed") + } + if bs.At(6) != 1 { + t.Error("#3: Failed") + } + if bs.At(9) != 1 { + t.Error("#4: Failed") + } + if bs.At(-1) != 0 { + t.Error("#5: Failed") + } + if bs.At(17) != 0 { + t.Error("#6: Failed") + } +} + +type bitStringRightAlignTest struct { + in []byte + inlen int + out []byte +} + +var bitStringRightAlignTests = []bitStringRightAlignTest{ + {[]byte{0x80}, 1, []byte{0x01}}, + {[]byte{0x80, 0x80}, 9, []byte{0x01, 0x01}}, + {[]byte{}, 0, []byte{}}, + {[]byte{0xce}, 8, []byte{0xce}}, + {[]byte{0xce, 0x47}, 16, []byte{0xce, 0x47}}, + {[]byte{0x34, 0x50}, 12, []byte{0x03, 0x45}}, +} + +func TestBitStringRightAlign(t *testing.T) { + for i, test := range bitStringRightAlignTests { + bs := BitString{test.in, test.inlen} + out := bs.RightAlign() + if !bytes.Equal(out, test.out) { + t.Errorf("#%d got: %x want: %x", i, out, test.out) + } + } +} + +type objectIdentifierTest struct { + in []byte + ok bool + out ObjectIdentifier // has base type[]int +} + +var objectIdentifierTestData = []objectIdentifierTest{ + {[]byte{}, false, []int{}}, + {[]byte{85}, true, []int{2, 5}}, + {[]byte{85, 0x02}, true, []int{2, 5, 2}}, + {[]byte{85, 0x02, 0xc0, 0x00}, true, []int{2, 5, 2, 0x2000}}, + {[]byte{0x81, 0x34, 0x03}, true, []int{2, 100, 3}}, + {[]byte{85, 0x02, 0xc0, 0x80, 0x80, 0x80, 0x80}, false, []int{}}, +} + +func TestObjectIdentifier(t *testing.T) { + for i, test := range objectIdentifierTestData { + ret, err := parseObjectIdentifier(test.in) + if (err == nil) != test.ok { + t.Errorf("#%d: Incorrect error result (did fail? %v, expected: %v)", i, err == nil, test.ok) + } + if err == nil { + if !reflect.DeepEqual(test.out, ret) { + t.Errorf("#%d: Bad result: %v (expected %v)", i, ret, test.out) + } + } + } + + if s := ObjectIdentifier([]int{1, 2, 3, 4}).String(); s != "1.2.3.4" { + t.Errorf("bad ObjectIdentifier.String(). Got %s, want 1.2.3.4", s) + } +} + +type timeTest struct { + in string + ok bool + out time.Time +} + +var utcTestData = []timeTest{ + {"910506164540-0700", true, time.Date(1991, 05, 06, 16, 45, 40, 0, time.FixedZone("", -7*60*60))}, + {"910506164540+0730", true, time.Date(1991, 05, 06, 16, 45, 40, 0, time.FixedZone("", 7*60*60+30*60))}, + {"910506234540Z", true, time.Date(1991, 05, 06, 23, 45, 40, 0, time.UTC)}, + {"9105062345Z", true, time.Date(1991, 05, 06, 23, 45, 0, 0, time.UTC)}, + {"5105062345Z", true, time.Date(1951, 05, 06, 23, 45, 0, 0, time.UTC)}, + {"a10506234540Z", false, time.Time{}}, + {"91a506234540Z", false, time.Time{}}, + {"9105a6234540Z", false, time.Time{}}, + {"910506a34540Z", false, time.Time{}}, + {"910506334a40Z", false, time.Time{}}, + {"91050633444aZ", false, time.Time{}}, + {"910506334461Z", false, time.Time{}}, + {"910506334400Za", false, time.Time{}}, + /* These are invalid times. However, the time package normalises times + * and they were accepted in some versions. See #11134. */ + {"000100000000Z", false, time.Time{}}, + {"101302030405Z", false, time.Time{}}, + {"100002030405Z", false, time.Time{}}, + {"100100030405Z", false, time.Time{}}, + {"100132030405Z", false, time.Time{}}, + {"100231030405Z", false, time.Time{}}, + {"100102240405Z", false, time.Time{}}, + {"100102036005Z", false, time.Time{}}, + {"100102030460Z", false, time.Time{}}, + {"-100102030410Z", false, time.Time{}}, + {"10-0102030410Z", false, time.Time{}}, + {"10-0002030410Z", false, time.Time{}}, + {"1001-02030410Z", false, time.Time{}}, + {"100102-030410Z", false, time.Time{}}, + {"10010203-0410Z", false, time.Time{}}, + {"1001020304-10Z", false, time.Time{}}, +} + +func TestUTCTime(t *testing.T) { + for i, test := range utcTestData { + ret, err := parseUTCTime([]byte(test.in)) + if err != nil { + if test.ok { + t.Errorf("#%d: parseUTCTime(%q) = error %v", i, test.in, err) + } + continue + } + if !test.ok { + t.Errorf("#%d: parseUTCTime(%q) succeeded, should have failed", i, test.in) + continue + } + const format = "Jan _2 15:04:05 -0700 2006" // ignore zone name, just offset + have := ret.Format(format) + want := test.out.Format(format) + if have != want { + t.Errorf("#%d: parseUTCTime(%q) = %s, want %s", i, test.in, have, want) + } + } +} + +var generalizedTimeTestData = []timeTest{ + {"20100102030405Z", true, time.Date(2010, 01, 02, 03, 04, 05, 0, time.UTC)}, + {"20100102030405", false, time.Time{}}, + {"20100102030405+0607", true, time.Date(2010, 01, 02, 03, 04, 05, 0, time.FixedZone("", 6*60*60+7*60))}, + {"20100102030405-0607", true, time.Date(2010, 01, 02, 03, 04, 05, 0, time.FixedZone("", -6*60*60-7*60))}, + /* These are invalid times. However, the time package normalises times + * and they were accepted in some versions. See #11134. */ + {"00000100000000Z", false, time.Time{}}, + {"20101302030405Z", false, time.Time{}}, + {"20100002030405Z", false, time.Time{}}, + {"20100100030405Z", false, time.Time{}}, + {"20100132030405Z", false, time.Time{}}, + {"20100231030405Z", false, time.Time{}}, + {"20100102240405Z", false, time.Time{}}, + {"20100102036005Z", false, time.Time{}}, + {"20100102030460Z", false, time.Time{}}, + {"-20100102030410Z", false, time.Time{}}, + {"2010-0102030410Z", false, time.Time{}}, + {"2010-0002030410Z", false, time.Time{}}, + {"201001-02030410Z", false, time.Time{}}, + {"20100102-030410Z", false, time.Time{}}, + {"2010010203-0410Z", false, time.Time{}}, + {"201001020304-10Z", false, time.Time{}}, +} + +func TestGeneralizedTime(t *testing.T) { + for i, test := range generalizedTimeTestData { + ret, err := parseGeneralizedTime([]byte(test.in)) + if (err == nil) != test.ok { + t.Errorf("#%d: Incorrect error result (did fail? %v, expected: %v)", i, err == nil, test.ok) + } + if err == nil { + if !reflect.DeepEqual(test.out, ret) { + t.Errorf("#%d: Bad result: %q → %v (expected %v)", i, test.in, ret, test.out) + } + } + } +} + +type tagAndLengthTest struct { + in []byte + ok bool + out tagAndLength +} + +var tagAndLengthData = []tagAndLengthTest{ + {[]byte{0x80, 0x01}, true, tagAndLength{2, 0, 1, false}}, + {[]byte{0xa0, 0x01}, true, tagAndLength{2, 0, 1, true}}, + {[]byte{0x02, 0x00}, true, tagAndLength{0, 2, 0, false}}, + {[]byte{0xfe, 0x00}, true, tagAndLength{3, 30, 0, true}}, + {[]byte{0x1f, 0x1f, 0x00}, true, tagAndLength{0, 31, 0, false}}, + {[]byte{0x1f, 0x81, 0x00, 0x00}, true, tagAndLength{0, 128, 0, false}}, + {[]byte{0x1f, 0x81, 0x80, 0x01, 0x00}, true, tagAndLength{0, 0x4001, 0, false}}, + {[]byte{0x00, 0x81, 0x80}, true, tagAndLength{0, 0, 128, false}}, + {[]byte{0x00, 0x82, 0x01, 0x00}, true, tagAndLength{0, 0, 256, false}}, + {[]byte{0x00, 0x83, 0x01, 0x00}, false, tagAndLength{}}, + {[]byte{0x1f, 0x85}, false, tagAndLength{}}, + {[]byte{0x30, 0x80}, false, tagAndLength{}}, + // Superfluous zeros in the length should be an error. + {[]byte{0xa0, 0x82, 0x00, 0xff}, false, tagAndLength{}}, + // Lengths up to the maximum size of an int should work. + {[]byte{0xa0, 0x84, 0x7f, 0xff, 0xff, 0xff}, true, tagAndLength{2, 0, 0x7fffffff, true}}, + // Lengths that would overflow an int should be rejected. + {[]byte{0xa0, 0x84, 0x80, 0x00, 0x00, 0x00}, false, tagAndLength{}}, + // Long length form may not be used for lengths that fit in short form. + {[]byte{0xa0, 0x81, 0x7f}, false, tagAndLength{}}, + // Tag numbers which would overflow int32 are rejected. (The value below is 2^31.) + {[]byte{0x1f, 0x88, 0x80, 0x80, 0x80, 0x00, 0x00}, false, tagAndLength{}}, + // Tag numbers that fit in an int32 are valid. (The value below is 2^31 - 1.) + {[]byte{0x1f, 0x87, 0xFF, 0xFF, 0xFF, 0x7F, 0x00}, true, tagAndLength{tag: math.MaxInt32}}, + // Long tag number form may not be used for tags that fit in short form. + {[]byte{0x1f, 0x1e, 0x00}, false, tagAndLength{}}, +} + +func TestParseTagAndLength(t *testing.T) { + for i, test := range tagAndLengthData { + tagAndLength, _, err := parseTagAndLength(test.in, 0) + if (err == nil) != test.ok { + t.Errorf("#%d: Incorrect error result (did pass? %v, expected: %v)", i, err == nil, test.ok) + } + if err == nil && !reflect.DeepEqual(test.out, tagAndLength) { + t.Errorf("#%d: Bad result: %v (expected %v)", i, tagAndLength, test.out) + } + } +} + +type parseFieldParametersTest struct { + in string + out fieldParameters +} + +func newInt(n int) *int { return &n } + +func newInt64(n int64) *int64 { return &n } + +func newString(s string) *string { return &s } + +func newBool(b bool) *bool { return &b } + +var parseFieldParametersTestData []parseFieldParametersTest = []parseFieldParametersTest{ + {"", fieldParameters{}}, + {"ia5", fieldParameters{stringType: TagIA5String}}, + {"generalized", fieldParameters{timeType: TagGeneralizedTime}}, + {"utc", fieldParameters{timeType: TagUTCTime}}, + {"printable", fieldParameters{stringType: TagPrintableString}}, + {"numeric", fieldParameters{stringType: TagNumericString}}, + {"optional", fieldParameters{optional: true}}, + {"explicit", fieldParameters{explicit: true, tag: new(int)}}, + {"application", fieldParameters{application: true, tag: new(int)}}, + {"private", fieldParameters{private: true, tag: new(int)}}, + {"optional,explicit", fieldParameters{optional: true, explicit: true, tag: new(int)}}, + {"default:42", fieldParameters{defaultValue: newInt64(42)}}, + {"tag:17", fieldParameters{tag: newInt(17)}}, + {"optional,explicit,default:42,tag:17", fieldParameters{optional: true, explicit: true, defaultValue: newInt64(42), tag: newInt(17)}}, + {"optional,explicit,default:42,tag:17,rubbish1", fieldParameters{optional: true, explicit: true, application: false, defaultValue: newInt64(42), tag: newInt(17), stringType: 0, timeType: 0, set: false, omitEmpty: false}}, + {"set", fieldParameters{set: true}}, +} + +func TestParseFieldParameters(t *testing.T) { + for i, test := range parseFieldParametersTestData { + f := parseFieldParameters(test.in) + if !reflect.DeepEqual(f, test.out) { + t.Errorf("#%d: Bad result: %v (expected %v)", i, f, test.out) + } + } +} + +type TestObjectIdentifierStruct struct { + OID ObjectIdentifier +} + +type TestContextSpecificTags struct { + A int `asn1:"tag:1"` +} + +type TestContextSpecificTags2 struct { + A int `asn1:"explicit,tag:1"` + B int +} + +type TestContextSpecificTags3 struct { + S string `asn1:"tag:1,utf8"` +} + +type TestElementsAfterString struct { + S string + A, B int +} + +type TestBigInt struct { + X *big.Int +} + +type TestSet struct { + Ints []int `asn1:"set"` +} + +var unmarshalTestData = []struct { + in []byte + out any +}{ + {[]byte{0x02, 0x01, 0x42}, newInt(0x42)}, + {[]byte{0x05, 0x00}, &RawValue{0, 5, false, []byte{}, []byte{0x05, 0x00}}}, + {[]byte{0x30, 0x08, 0x06, 0x06, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d}, &TestObjectIdentifierStruct{[]int{1, 2, 840, 113549}}}, + {[]byte{0x03, 0x04, 0x06, 0x6e, 0x5d, 0xc0}, &BitString{[]byte{110, 93, 192}, 18}}, + {[]byte{0x30, 0x09, 0x02, 0x01, 0x01, 0x02, 0x01, 0x02, 0x02, 0x01, 0x03}, &[]int{1, 2, 3}}, + {[]byte{0x02, 0x01, 0x10}, newInt(16)}, + {[]byte{0x13, 0x04, 't', 'e', 's', 't'}, newString("test")}, + {[]byte{0x16, 0x04, 't', 'e', 's', 't'}, newString("test")}, + // Ampersand is allowed in PrintableString due to mistakes by major CAs. + {[]byte{0x13, 0x05, 't', 'e', 's', 't', '&'}, newString("test&")}, + {[]byte{0x16, 0x04, 't', 'e', 's', 't'}, &RawValue{0, 22, false, []byte("test"), []byte("\x16\x04test")}}, + {[]byte{0x04, 0x04, 1, 2, 3, 4}, &RawValue{0, 4, false, []byte{1, 2, 3, 4}, []byte{4, 4, 1, 2, 3, 4}}}, + {[]byte{0x30, 0x03, 0x81, 0x01, 0x01}, &TestContextSpecificTags{1}}, + {[]byte{0x30, 0x08, 0xa1, 0x03, 0x02, 0x01, 0x01, 0x02, 0x01, 0x02}, &TestContextSpecificTags2{1, 2}}, + {[]byte{0x30, 0x03, 0x81, 0x01, '@'}, &TestContextSpecificTags3{"@"}}, + {[]byte{0x01, 0x01, 0x00}, newBool(false)}, + {[]byte{0x01, 0x01, 0xff}, newBool(true)}, + {[]byte{0x30, 0x0b, 0x13, 0x03, 0x66, 0x6f, 0x6f, 0x02, 0x01, 0x22, 0x02, 0x01, 0x33}, &TestElementsAfterString{"foo", 0x22, 0x33}}, + {[]byte{0x30, 0x05, 0x02, 0x03, 0x12, 0x34, 0x56}, &TestBigInt{big.NewInt(0x123456)}}, + {[]byte{0x30, 0x0b, 0x31, 0x09, 0x02, 0x01, 0x01, 0x02, 0x01, 0x02, 0x02, 0x01, 0x03}, &TestSet{Ints: []int{1, 2, 3}}}, + {[]byte{0x12, 0x0b, '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ' '}, newString("0123456789 ")}, +} + +func TestUnmarshal(t *testing.T) { + for i, test := range unmarshalTestData { + pv := reflect.New(reflect.TypeOf(test.out).Elem()) + val := pv.Interface() + _, err := Unmarshal(test.in, val) + if err != nil { + t.Errorf("Unmarshal failed at index %d %v", i, err) + } + if !reflect.DeepEqual(val, test.out) { + t.Errorf("#%d:\nhave %#v\nwant %#v", i, val, test.out) + } + } +} + +func TestUnmarshalWithNilOrNonPointer(t *testing.T) { + tests := []struct { + b []byte + v any + want string + }{ + {b: []byte{0x05, 0x00}, v: nil, want: "asn1: Unmarshal recipient value is nil"}, + {b: []byte{0x05, 0x00}, v: RawValue{}, want: "asn1: Unmarshal recipient value is non-pointer asn1.RawValue"}, + {b: []byte{0x05, 0x00}, v: (*RawValue)(nil), want: "asn1: Unmarshal recipient value is nil *asn1.RawValue"}, + } + + for _, test := range tests { + _, err := Unmarshal(test.b, test.v) + if err == nil { + t.Errorf("Unmarshal expecting error, got nil") + continue + } + if g, w := err.Error(), test.want; g != w { + t.Errorf("InvalidUnmarshalError mismatch\nGot: %q\nWant: %q", g, w) + } + } +} + +type Certificate struct { + TBSCertificate TBSCertificate + SignatureAlgorithm AlgorithmIdentifier + SignatureValue BitString +} + +type TBSCertificate struct { + Version int `asn1:"optional,explicit,default:0,tag:0"` + SerialNumber RawValue + SignatureAlgorithm AlgorithmIdentifier + Issuer RDNSequence + Validity Validity + Subject RDNSequence + PublicKey PublicKeyInfo +} + +type AlgorithmIdentifier struct { + Algorithm ObjectIdentifier +} + +type RDNSequence []RelativeDistinguishedNameSET + +type RelativeDistinguishedNameSET []AttributeTypeAndValue + +type AttributeTypeAndValue struct { + Type ObjectIdentifier + Value any +} + +type Validity struct { + NotBefore, NotAfter time.Time +} + +type PublicKeyInfo struct { + Algorithm AlgorithmIdentifier + PublicKey BitString +} + +func TestCertificate(t *testing.T) { + // This is a minimal, self-signed certificate that should parse correctly. + var cert Certificate + if _, err := Unmarshal(derEncodedSelfSignedCertBytes, &cert); err != nil { + t.Errorf("Unmarshal failed: %v", err) + } + if !reflect.DeepEqual(cert, derEncodedSelfSignedCert) { + t.Errorf("Bad result:\ngot: %+v\nwant: %+v", cert, derEncodedSelfSignedCert) + } +} + +func TestCertificateWithNUL(t *testing.T) { + // This is the paypal NUL-hack certificate. It should fail to parse because + // NUL isn't a permitted character in a PrintableString. + + var cert Certificate + if _, err := Unmarshal(derEncodedPaypalNULCertBytes, &cert); err == nil { + t.Error("Unmarshal succeeded, should not have") + } +} + +type rawStructTest struct { + Raw RawContent + A int +} + +func TestRawStructs(t *testing.T) { + var s rawStructTest + input := []byte{0x30, 0x03, 0x02, 0x01, 0x50} + + rest, err := Unmarshal(input, &s) + if len(rest) != 0 { + t.Errorf("incomplete parse: %x", rest) + return + } + if err != nil { + t.Error(err) + return + } + if s.A != 0x50 { + t.Errorf("bad value for A: got %d want %d", s.A, 0x50) + } + if !bytes.Equal([]byte(s.Raw), input) { + t.Errorf("bad value for Raw: got %x want %x", s.Raw, input) + } +} + +type oiEqualTest struct { + first ObjectIdentifier + second ObjectIdentifier + same bool +} + +var oiEqualTests = []oiEqualTest{ + { + ObjectIdentifier{1, 2, 3}, + ObjectIdentifier{1, 2, 3}, + true, + }, + { + ObjectIdentifier{1}, + ObjectIdentifier{1, 2, 3}, + false, + }, + { + ObjectIdentifier{1, 2, 3}, + ObjectIdentifier{10, 11, 12}, + false, + }, +} + +func TestObjectIdentifierEqual(t *testing.T) { + for _, o := range oiEqualTests { + if s := o.first.Equal(o.second); s != o.same { + t.Errorf("ObjectIdentifier.Equal: got: %t want: %t", s, o.same) + } + } +} + +var derEncodedSelfSignedCert = Certificate{ + TBSCertificate: TBSCertificate{ + Version: 0, + SerialNumber: RawValue{Class: 0, Tag: 2, IsCompound: false, Bytes: []uint8{0x0, 0x8c, 0xc3, 0x37, 0x92, 0x10, 0xec, 0x2c, 0x98}, FullBytes: []byte{2, 9, 0x0, 0x8c, 0xc3, 0x37, 0x92, 0x10, 0xec, 0x2c, 0x98}}, + SignatureAlgorithm: AlgorithmIdentifier{Algorithm: ObjectIdentifier{1, 2, 840, 113549, 1, 1, 5}}, + Issuer: RDNSequence{ + RelativeDistinguishedNameSET{AttributeTypeAndValue{Type: ObjectIdentifier{2, 5, 4, 6}, Value: "XX"}}, + RelativeDistinguishedNameSET{AttributeTypeAndValue{Type: ObjectIdentifier{2, 5, 4, 8}, Value: "Some-State"}}, + RelativeDistinguishedNameSET{AttributeTypeAndValue{Type: ObjectIdentifier{2, 5, 4, 7}, Value: "City"}}, + RelativeDistinguishedNameSET{AttributeTypeAndValue{Type: ObjectIdentifier{2, 5, 4, 10}, Value: "Internet Widgits Pty Ltd"}}, + RelativeDistinguishedNameSET{AttributeTypeAndValue{Type: ObjectIdentifier{2, 5, 4, 3}, Value: "false.example.com"}}, + RelativeDistinguishedNameSET{AttributeTypeAndValue{Type: ObjectIdentifier{1, 2, 840, 113549, 1, 9, 1}, Value: "false@example.com"}}, + }, + Validity: Validity{ + NotBefore: time.Date(2009, 10, 8, 00, 25, 53, 0, time.UTC), + NotAfter: time.Date(2010, 10, 8, 00, 25, 53, 0, time.UTC), + }, + Subject: RDNSequence{ + RelativeDistinguishedNameSET{AttributeTypeAndValue{Type: ObjectIdentifier{2, 5, 4, 6}, Value: "XX"}}, + RelativeDistinguishedNameSET{AttributeTypeAndValue{Type: ObjectIdentifier{2, 5, 4, 8}, Value: "Some-State"}}, + RelativeDistinguishedNameSET{AttributeTypeAndValue{Type: ObjectIdentifier{2, 5, 4, 7}, Value: "City"}}, + RelativeDistinguishedNameSET{AttributeTypeAndValue{Type: ObjectIdentifier{2, 5, 4, 10}, Value: "Internet Widgits Pty Ltd"}}, + RelativeDistinguishedNameSET{AttributeTypeAndValue{Type: ObjectIdentifier{2, 5, 4, 3}, Value: "false.example.com"}}, + RelativeDistinguishedNameSET{AttributeTypeAndValue{Type: ObjectIdentifier{1, 2, 840, 113549, 1, 9, 1}, Value: "false@example.com"}}, + }, + PublicKey: PublicKeyInfo{ + Algorithm: AlgorithmIdentifier{Algorithm: ObjectIdentifier{1, 2, 840, 113549, 1, 1, 1}}, + PublicKey: BitString{ + Bytes: []uint8{ + 0x30, 0x48, 0x2, 0x41, 0x0, 0xcd, 0xb7, + 0x63, 0x9c, 0x32, 0x78, 0xf0, 0x6, 0xaa, 0x27, 0x7f, 0x6e, 0xaf, 0x42, + 0x90, 0x2b, 0x59, 0x2d, 0x8c, 0xbc, 0xbe, 0x38, 0xa1, 0xc9, 0x2b, 0xa4, + 0x69, 0x5a, 0x33, 0x1b, 0x1d, 0xea, 0xde, 0xad, 0xd8, 0xe9, 0xa5, 0xc2, + 0x7e, 0x8c, 0x4c, 0x2f, 0xd0, 0xa8, 0x88, 0x96, 0x57, 0x72, 0x2a, 0x4f, + 0x2a, 0xf7, 0x58, 0x9c, 0xf2, 0xc7, 0x70, 0x45, 0xdc, 0x8f, 0xde, 0xec, + 0x35, 0x7d, 0x2, 0x3, 0x1, 0x0, 0x1, + }, + BitLength: 592, + }, + }, + }, + SignatureAlgorithm: AlgorithmIdentifier{Algorithm: ObjectIdentifier{1, 2, 840, 113549, 1, 1, 5}}, + SignatureValue: BitString{ + Bytes: []uint8{ + 0xa6, 0x7b, 0x6, 0xec, 0x5e, 0xce, + 0x92, 0x77, 0x2c, 0xa4, 0x13, 0xcb, 0xa3, 0xca, 0x12, 0x56, 0x8f, 0xdc, 0x6c, + 0x7b, 0x45, 0x11, 0xcd, 0x40, 0xa7, 0xf6, 0x59, 0x98, 0x4, 0x2, 0xdf, 0x2b, + 0x99, 0x8b, 0xb9, 0xa4, 0xa8, 0xcb, 0xeb, 0x34, 0xc0, 0xf0, 0xa7, 0x8c, 0xf8, + 0xd9, 0x1e, 0xde, 0x14, 0xa5, 0xed, 0x76, 0xbf, 0x11, 0x6f, 0xe3, 0x60, 0xaa, + 0xfa, 0x88, 0x21, 0x49, 0x4, 0x35, + }, + BitLength: 512, + }, +} + +var derEncodedSelfSignedCertBytes = []byte{ + 0x30, 0x82, 0x02, 0x18, 0x30, + 0x82, 0x01, 0xc2, 0x02, 0x09, 0x00, 0x8c, 0xc3, 0x37, 0x92, 0x10, 0xec, 0x2c, + 0x98, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, + 0x05, 0x05, 0x00, 0x30, 0x81, 0x92, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, + 0x04, 0x06, 0x13, 0x02, 0x58, 0x58, 0x31, 0x13, 0x30, 0x11, 0x06, 0x03, 0x55, + 0x04, 0x08, 0x13, 0x0a, 0x53, 0x6f, 0x6d, 0x65, 0x2d, 0x53, 0x74, 0x61, 0x74, + 0x65, 0x31, 0x0d, 0x30, 0x0b, 0x06, 0x03, 0x55, 0x04, 0x07, 0x13, 0x04, 0x43, + 0x69, 0x74, 0x79, 0x31, 0x21, 0x30, 0x1f, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x13, + 0x18, 0x49, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x20, 0x57, 0x69, 0x64, + 0x67, 0x69, 0x74, 0x73, 0x20, 0x50, 0x74, 0x79, 0x20, 0x4c, 0x74, 0x64, 0x31, + 0x1a, 0x30, 0x18, 0x06, 0x03, 0x55, 0x04, 0x03, 0x13, 0x11, 0x66, 0x61, 0x6c, + 0x73, 0x65, 0x2e, 0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x2e, 0x63, 0x6f, + 0x6d, 0x31, 0x20, 0x30, 0x1e, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, + 0x01, 0x09, 0x01, 0x16, 0x11, 0x66, 0x61, 0x6c, 0x73, 0x65, 0x40, 0x65, 0x78, + 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x2e, 0x63, 0x6f, 0x6d, 0x30, 0x1e, 0x17, 0x0d, + 0x30, 0x39, 0x31, 0x30, 0x30, 0x38, 0x30, 0x30, 0x32, 0x35, 0x35, 0x33, 0x5a, + 0x17, 0x0d, 0x31, 0x30, 0x31, 0x30, 0x30, 0x38, 0x30, 0x30, 0x32, 0x35, 0x35, + 0x33, 0x5a, 0x30, 0x81, 0x92, 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0x00, 0x03, + 0x4b, 0x00, 0x30, 0x48, 0x02, 0x41, 0x00, 0xcd, 0xb7, 0x63, 0x9c, 0x32, 0x78, + 0xf0, 0x06, 0xaa, 0x27, 0x7f, 0x6e, 0xaf, 0x42, 0x90, 0x2b, 0x59, 0x2d, 0x8c, + 0xbc, 0xbe, 0x38, 0xa1, 0xc9, 0x2b, 0xa4, 0x69, 0x5a, 0x33, 0x1b, 0x1d, 0xea, + 0xde, 0xad, 0xd8, 0xe9, 0xa5, 0xc2, 0x7e, 0x8c, 0x4c, 0x2f, 0xd0, 0xa8, 0x88, + 0x96, 0x57, 0x72, 0x2a, 0x4f, 0x2a, 0xf7, 0x58, 0x9c, 0xf2, 0xc7, 0x70, 0x45, + 0xdc, 0x8f, 0xde, 0xec, 0x35, 0x7d, 0x02, 0x03, 0x01, 0x00, 0x01, 0x30, 0x0d, + 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x05, 0x05, 0x00, + 0x03, 0x41, 0x00, 0xa6, 0x7b, 0x06, 0xec, 0x5e, 0xce, 0x92, 0x77, 0x2c, 0xa4, + 0x13, 0xcb, 0xa3, 0xca, 0x12, 0x56, 0x8f, 0xdc, 0x6c, 0x7b, 0x45, 0x11, 0xcd, + 0x40, 0xa7, 0xf6, 0x59, 0x98, 0x04, 0x02, 0xdf, 0x2b, 0x99, 0x8b, 0xb9, 0xa4, + 0xa8, 0xcb, 0xeb, 0x34, 0xc0, 0xf0, 0xa7, 0x8c, 0xf8, 0xd9, 0x1e, 0xde, 0x14, + 0xa5, 0xed, 0x76, 0xbf, 0x11, 0x6f, 0xe3, 0x60, 0xaa, 0xfa, 0x88, 0x21, 0x49, + 0x04, 0x35, +} + +var derEncodedPaypalNULCertBytes = []byte{ + 0x30, 0x82, 0x06, 0x44, 0x30, + 0x82, 0x05, 0xad, 0xa0, 0x03, 0x02, 0x01, 0x02, 0x02, 0x03, 0x00, 0xf0, 0x9b, + 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x05, + 0x05, 0x00, 0x30, 0x82, 0x01, 0x12, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, + 0x04, 0x06, 0x13, 0x02, 0x45, 0x53, 0x31, 0x12, 0x30, 0x10, 0x06, 0x03, 0x55, + 0x04, 0x08, 0x13, 0x09, 0x42, 0x61, 0x72, 0x63, 0x65, 0x6c, 0x6f, 0x6e, 0x61, + 0x31, 0x12, 0x30, 0x10, 0x06, 0x03, 0x55, 0x04, 0x07, 0x13, 0x09, 0x42, 0x61, + 0x72, 0x63, 0x65, 0x6c, 0x6f, 0x6e, 0x61, 0x31, 0x29, 0x30, 0x27, 0x06, 0x03, + 0x55, 0x04, 0x0a, 0x13, 0x20, 0x49, 0x50, 0x53, 0x20, 0x43, 0x65, 0x72, 0x74, + 0x69, 0x66, 0x69, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x20, 0x41, 0x75, 0x74, + 0x68, 0x6f, 0x72, 0x69, 0x74, 0x79, 0x20, 0x73, 0x2e, 0x6c, 0x2e, 0x31, 0x2e, + 0x30, 0x2c, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x14, 0x25, 0x67, 0x65, 0x6e, 0x65, + 0x72, 0x61, 0x6c, 0x40, 0x69, 0x70, 0x73, 0x63, 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[][]string{ + {"foo", "bar"}, + {"foo", "\\bar"}, + {"foo", "\"bar\""}, + {"foo", "åäö"}, +} + +func TestStringSlice(t *testing.T) { + for _, test := range stringSliceTestData { + bs, err := Marshal(test) + if err != nil { + t.Error(err) + } + + var res []string + _, err = Unmarshal(bs, &res) + if err != nil { + t.Error(err) + } + + if fmt.Sprintf("%v", res) != fmt.Sprintf("%v", test) { + t.Errorf("incorrect marshal/unmarshal; %v != %v", res, test) + } + } +} + +type explicitTaggedTimeTest struct { + Time time.Time `asn1:"explicit,tag:0"` +} + +var explicitTaggedTimeTestData = []struct { + in []byte + out explicitTaggedTimeTest +}{ + {[]byte{0x30, 0x11, 0xa0, 0xf, 0x17, 0xd, '9', '1', '0', '5', '0', '6', '1', '6', '4', '5', '4', '0', 'Z'}, + explicitTaggedTimeTest{time.Date(1991, 05, 06, 16, 45, 40, 0, time.UTC)}}, + {[]byte{0x30, 0x17, 0xa0, 0xf, 0x18, 0x13, '2', '0', '1', '0', '0', '1', '0', '2', '0', '3', '0', '4', '0', '5', '+', '0', '6', '0', '7'}, + explicitTaggedTimeTest{time.Date(2010, 01, 02, 03, 04, 05, 0, time.FixedZone("", 6*60*60+7*60))}}, +} + +func TestExplicitTaggedTime(t *testing.T) { + // Test that a time.Time will match either tagUTCTime or + // tagGeneralizedTime. + for i, test := range explicitTaggedTimeTestData { + var got explicitTaggedTimeTest + _, err := Unmarshal(test.in, &got) + if err != nil { + t.Errorf("Unmarshal failed at index %d %v", i, err) + } + if !got.Time.Equal(test.out.Time) { + t.Errorf("#%d: got %v, want %v", i, got.Time, test.out.Time) + } + } +} + +type implicitTaggedTimeTest struct { + Time time.Time `asn1:"tag:24"` +} + +func TestImplicitTaggedTime(t *testing.T) { + // An implicitly tagged time value, that happens to have an implicit + // tag equal to a GENERALIZEDTIME, should still be parsed as a UTCTime. + // (There's no "timeType" in fieldParameters to determine what type of + // time should be expected when implicitly tagged.) + der := []byte{0x30, 0x0f, 0x80 | 24, 0xd, '9', '1', '0', '5', '0', '6', '1', '6', '4', '5', '4', '0', 'Z'} + var result implicitTaggedTimeTest + if _, err := Unmarshal(der, &result); err != nil { + t.Fatalf("Error while parsing: %s", err) + } + if expected := time.Date(1991, 05, 06, 16, 45, 40, 0, time.UTC); !result.Time.Equal(expected) { + t.Errorf("Wrong result. Got %v, want %v", result.Time, expected) + } +} + +type truncatedExplicitTagTest struct { + Test int `asn1:"explicit,tag:0"` +} + +func TestTruncatedExplicitTag(t *testing.T) { + // This crashed Unmarshal in the past. See #11154. + der := []byte{ + 0x30, // SEQUENCE + 0x02, // two bytes long + 0xa0, // context-specific, tag 0 + 0x30, // 48 bytes long + } + + var result truncatedExplicitTagTest + if _, err := Unmarshal(der, &result); err == nil { + t.Error("Unmarshal returned without error") + } +} + +type invalidUTF8Test struct { + Str string `asn1:"utf8"` +} + +func TestUnmarshalInvalidUTF8(t *testing.T) { + data := []byte("0\x05\f\x03a\xc9c") + var result invalidUTF8Test + _, err := Unmarshal(data, &result) + + const expectedSubstring = "UTF" + if err == nil { + t.Fatal("Successfully unmarshaled invalid UTF-8 data") + } else if !strings.Contains(err.Error(), expectedSubstring) { + t.Fatalf("Expected error to mention %q but error was %q", expectedSubstring, err.Error()) + } +} + +func TestMarshalNilValue(t *testing.T) { + nilValueTestData := []any{ + nil, + struct{ V any }{}, + } + for i, test := range nilValueTestData { + if _, err := Marshal(test); err == nil { + t.Fatalf("#%d: successfully marshaled nil value", i) + } + } +} + +type unexported struct { + X int + y int +} + +type exported struct { + X int + Y int +} + +func TestUnexportedStructField(t *testing.T) { + want := StructuralError{"struct contains unexported fields"} + + _, err := Marshal(unexported{X: 5, y: 1}) + if err != want { + t.Errorf("got %v, want %v", err, want) + } + + bs, err := Marshal(exported{X: 5, Y: 1}) + if err != nil { + t.Fatal(err) + } + var u unexported + _, err = Unmarshal(bs, &u) + if err != want { + t.Errorf("got %v, want %v", err, want) + } +} + +func TestNull(t *testing.T) { + marshaled, err := Marshal(NullRawValue) + if err != nil { + t.Fatal(err) + } + if !bytes.Equal(NullBytes, marshaled) { + t.Errorf("Expected Marshal of NullRawValue to yield %x, got %x", NullBytes, marshaled) + } + + unmarshaled := RawValue{} + if _, err := Unmarshal(NullBytes, &unmarshaled); err != nil { + t.Fatal(err) + } + + unmarshaled.FullBytes = NullRawValue.FullBytes + if len(unmarshaled.Bytes) == 0 { + // DeepEqual considers a nil slice and an empty slice to be different. + unmarshaled.Bytes = NullRawValue.Bytes + } + + if !reflect.DeepEqual(NullRawValue, unmarshaled) { + t.Errorf("Expected Unmarshal of NullBytes to yield %v, got %v", NullRawValue, unmarshaled) + } +} + +func TestExplicitTagRawValueStruct(t *testing.T) { + type foo struct { + A RawValue `asn1:"optional,explicit,tag:5"` + B []byte `asn1:"optional,explicit,tag:6"` + } + before := foo{B: []byte{1, 2, 3}} + derBytes, err := Marshal(before) + if err != nil { + t.Fatal(err) + } + + var after foo + if rest, err := Unmarshal(derBytes, &after); err != nil || len(rest) != 0 { + t.Fatal(err) + } + + got := fmt.Sprintf("%#v", after) + want := fmt.Sprintf("%#v", before) + if got != want { + t.Errorf("got %s, want %s (DER: %x)", got, want, derBytes) + } +} + +func TestTaggedRawValue(t *testing.T) { + type taggedRawValue struct { + A RawValue `asn1:"tag:5"` + } + type untaggedRawValue struct { + A RawValue + } + const isCompound = 0x20 + const tag = 5 + + tests := []struct { + shouldMatch bool + derBytes []byte + }{ + {false, []byte{0x30, 3, TagInteger, 1, 1}}, + {true, []byte{0x30, 3, (ClassContextSpecific << 6) | tag, 1, 1}}, + {true, []byte{0x30, 3, (ClassContextSpecific << 6) | tag | isCompound, 1, 1}}, + {false, []byte{0x30, 3, (ClassApplication << 6) | tag | isCompound, 1, 1}}, + {false, []byte{0x30, 3, (ClassPrivate << 6) | tag | isCompound, 1, 1}}, + } + + for i, test := range tests { + var tagged taggedRawValue + if _, err := Unmarshal(test.derBytes, &tagged); (err == nil) != test.shouldMatch { + t.Errorf("#%d: unexpected result parsing %x: %s", i, test.derBytes, err) + } + + // An untagged RawValue should accept anything. + var untagged untaggedRawValue + if _, err := Unmarshal(test.derBytes, &untagged); err != nil { + t.Errorf("#%d: unexpected failure parsing %x with untagged RawValue: %s", i, test.derBytes, err) + } + } +} + +var bmpStringTests = []struct { + decoded string + encodedHex string +}{ + {"", "0000"}, + // Example from https://tools.ietf.org/html/rfc7292#appendix-B. + {"Beavis", "0042006500610076006900730000"}, + // Some characters from the "Letterlike Symbols Unicode block". + {"\u2115 - Double-struck N", "21150020002d00200044006f00750062006c0065002d00730074007200750063006b0020004e0000"}, +} + +func TestBMPString(t *testing.T) { + for i, test := range bmpStringTests { + encoded, err := hex.DecodeString(test.encodedHex) + if err != nil { + t.Fatalf("#%d: failed to decode from hex string", i) + } + + decoded, err := parseBMPString(encoded) + + if err != nil { + t.Errorf("#%d: decoding output gave an error: %s", i, err) + continue + } + + if decoded != test.decoded { + t.Errorf("#%d: decoding output resulted in %q, but it should have been %q", i, decoded, test.decoded) + continue + } + } +} + +func TestNonMinimalEncodedOID(t *testing.T) { + h, err := hex.DecodeString("060a2a80864886f70d01010b") + if err != nil { + t.Fatalf("failed to decode from hex string: %s", err) + } + var oid ObjectIdentifier + _, err = Unmarshal(h, &oid) + if err == nil { + t.Fatalf("accepted non-minimally encoded oid") + } +} |