// 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"; "reflect"; "strings"; "testing"; "time"; ) type int64Test struct { in []byte; ok bool; out int64; } var int64TestData = []int64Test{ int64Test{[]byte{0x00}, true, 0}, int64Test{[]byte{0x7f}, true, 127}, int64Test{[]byte{0x00, 0x80}, true, 128}, int64Test{[]byte{0x01, 0x00}, true, 256}, int64Test{[]byte{0x80}, true, -128}, int64Test{[]byte{0xff, 0x7f}, true, -129}, int64Test{[]byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}, true, -1}, int64Test{[]byte{0xff}, true, -1}, int64Test{[]byte{0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, true, -9223372036854775808}, int64Test{[]byte{0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, 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 bitStringTest struct { in []byte; ok bool; out []byte; bitLength int; } var bitStringTestData = []bitStringTest{ bitStringTest{[]byte{}, false, []byte{}, 0}, bitStringTest{[]byte{0x00}, true, []byte{}, 0}, bitStringTest{[]byte{0x07, 0x00}, true, []byte{0x00}, 1}, bitStringTest{[]byte{0x07, 0x01}, false, []byte{}, 0}, bitStringTest{[]byte{0x07, 0x40}, false, []byte{}, 0}, bitStringTest{[]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.Compare(ret.Bytes, test.out) != 0 { 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") } } type bitStringRightAlignTest struct { in []byte; inlen int; out []byte; } var bitStringRightAlignTests = []bitStringRightAlignTest{ bitStringRightAlignTest{[]byte{0x80}, 1, []byte{0x01}}, bitStringRightAlignTest{[]byte{0x80, 0x80}, 9, []byte{0x01, 0x01}}, bitStringRightAlignTest{[]byte{}, 0, []byte{}}, bitStringRightAlignTest{[]byte{0xce}, 8, []byte{0xce}}, bitStringRightAlignTest{[]byte{0xce, 0x47}, 16, []byte{0xce, 0x47}}, bitStringRightAlignTest{[]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.Compare(out, test.out) != 0 { t.Errorf("#%d got: %x want: %x", i, out, test.out) } } } type objectIdentifierTest struct { in []byte; ok bool; out []int; } var objectIdentifierTestData = []objectIdentifierTest{ objectIdentifierTest{[]byte{}, false, []int{}}, objectIdentifierTest{[]byte{85}, true, []int{2, 5}}, objectIdentifierTest{[]byte{85, 0x02}, true, []int{2, 5, 2}}, objectIdentifierTest{[]byte{85, 0x02, 0xc0, 0x00}, true, []int{2, 5, 2, 0x2000}}, objectIdentifierTest{[]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) } } } } type timeTest struct { in string; ok bool; out *time.Time; } var timeTestData = []timeTest{ timeTest{"910506164540-0700", true, &time.Time{1991, 05, 06, 16, 45, 40, 0, -7 * 60 * 60, ""}}, timeTest{"910506164540+0730", true, &time.Time{1991, 05, 06, 16, 45, 40, 0, 7*60*60 + 30*60, ""}}, timeTest{"910506234540Z", true, &time.Time{1991, 05, 06, 23, 45, 40, 0, 0, ""}}, timeTest{"9105062345Z", true, &time.Time{1991, 05, 06, 23, 45, 0, 0, 0, ""}}, timeTest{"a10506234540Z", false, nil}, timeTest{"91a506234540Z", false, nil}, timeTest{"9105a6234540Z", false, nil}, timeTest{"910506a34540Z", false, nil}, timeTest{"910506334a40Z", false, nil}, timeTest{"91050633444aZ", false, nil}, timeTest{"910506334461Z", false, nil}, timeTest{"910506334400Za", false, nil}, } func TestTime(t *testing.T) { for i, test := range timeTestData { ret, err := parseUTCTime(strings.Bytes(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) } } } } type tagAndLengthTest struct { in []byte; ok bool; out tagAndLength; } var tagAndLengthData = []tagAndLengthTest{ tagAndLengthTest{[]byte{0x80, 0x01}, true, tagAndLength{2, 0, 1, false}}, tagAndLengthTest{[]byte{0xa0, 0x01}, true, tagAndLength{2, 0, 1, true}}, tagAndLengthTest{[]byte{0x02, 0x00}, true, tagAndLength{0, 2, 0, false}}, tagAndLengthTest{[]byte{0xfe, 0x00}, true, tagAndLength{3, 30, 0, true}}, tagAndLengthTest{[]byte{0x1f, 0x01, 0x00}, true, tagAndLength{0, 1, 0, false}}, tagAndLengthTest{[]byte{0x1f, 0x81, 0x00, 0x00}, true, tagAndLength{0, 128, 0, false}}, tagAndLengthTest{[]byte{0x1f, 0x81, 0x80, 0x01, 0x00}, true, tagAndLength{0, 0x4001, 0, false}}, tagAndLengthTest{[]byte{0x00, 0x81, 0x01}, true, tagAndLength{0, 0, 1, false}}, tagAndLengthTest{[]byte{0x00, 0x82, 0x01, 0x00}, true, tagAndLength{0, 0, 256, false}}, tagAndLengthTest{[]byte{0x00, 0x83, 0x01, 0x00}, false, tagAndLength{}}, tagAndLengthTest{[]byte{0x1f, 0x85}, false, tagAndLength{}}, tagAndLengthTest{[]byte{0x30, 0x80}, 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{ parseFieldParametersTest{"", fieldParameters{false, false, nil, nil, 0}}, parseFieldParametersTest{"ia5", fieldParameters{false, false, nil, nil, tagIA5String}}, parseFieldParametersTest{"printable", fieldParameters{false, false, nil, nil, tagPrintableString}}, parseFieldParametersTest{"optional", fieldParameters{true, false, nil, nil, 0}}, parseFieldParametersTest{"explicit", fieldParameters{false, true, nil, new(int), 0}}, parseFieldParametersTest{"optional,explicit", fieldParameters{true, true, nil, new(int), 0}}, parseFieldParametersTest{"default:42", fieldParameters{false, false, newInt64(42), nil, 0}}, parseFieldParametersTest{"tag:17", fieldParameters{false, false, nil, newInt(17), 0}}, parseFieldParametersTest{"optional,explicit,default:42,tag:17", fieldParameters{true, true, newInt64(42), newInt(17), 0}}, parseFieldParametersTest{"optional,explicit,default:42,tag:17,rubbish1", fieldParameters{true, true, newInt64(42), newInt(17), 0}}, } 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 unmarshalTest struct { in []byte; out interface{}; } type TestObjectIdentifierStruct struct { OID ObjectIdentifier; } type TestContextSpecificTags struct { A int "tag:1"; } type TestContextSpecificTags2 struct { A int "explicit,tag:1"; B int; } var unmarshalTestData []unmarshalTest = []unmarshalTest{ unmarshalTest{[]byte{0x02, 0x01, 0x42}, newInt(0x42)}, unmarshalTest{[]byte{0x30, 0x08, 0x06, 0x06, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d}, &TestObjectIdentifierStruct{[]int{1, 2, 840, 113549}}}, unmarshalTest{[]byte{0x03, 0x04, 0x06, 0x6e, 0x5d, 0xc0}, &BitString{[]byte{110, 93, 192}, 18}}, unmarshalTest{[]byte{0x30, 0x09, 0x02, 0x01, 0x01, 0x02, 0x01, 0x02, 0x02, 0x01, 0x03}, &[]int{1, 2, 3}}, unmarshalTest{[]byte{0x02, 0x01, 0x10}, newInt(16)}, unmarshalTest{[]byte{0x13, 0x04, 't', 'e', 's', 't'}, newString("test")}, unmarshalTest{[]byte{0x16, 0x04, 't', 'e', 's', 't'}, newString("test")}, unmarshalTest{[]byte{0x16, 0x04, 't', 'e', 's', 't'}, &RawValue{0, 22, false, []byte{'t', 'e', 's', 't'}}}, unmarshalTest{[]byte{0x04, 0x04, 1, 2, 3, 4}, &RawValue{0, 4, false, []byte{1, 2, 3, 4}}}, unmarshalTest{[]byte{0x30, 0x03, 0x81, 0x01, 0x01}, &TestContextSpecificTags{1}}, unmarshalTest{[]byte{0x30, 0x08, 0xa1, 0x03, 0x02, 0x01, 0x01, 0x02, 0x01, 0x02}, &TestContextSpecificTags2{1, 2}}, unmarshalTest{[]byte{0x01, 0x01, 0x00}, newBool(false)}, unmarshalTest{[]byte{0x01, 0x01, 0x01}, newBool(true)}, } func TestUnmarshal(t *testing.T) { for i, test := range unmarshalTestData { pv := reflect.MakeZero(reflect.NewValue(test.out).Type()); zv := reflect.MakeZero(pv.Type().(*reflect.PtrType).Elem()); pv.(*reflect.PtrValue).PointTo(zv); val := pv.Interface(); _, err := Unmarshal(val, test.in); 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) } } } type Certificate struct { TBSCertificate TBSCertificate; SignatureAlgorithm AlgorithmIdentifier; SignatureValue BitString; } type TBSCertificate struct { Version int "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 []RelativeDistinguishedName type RelativeDistinguishedName []AttributeTypeAndValue type AttributeTypeAndValue struct { Type ObjectIdentifier; Value interface{}; } 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(&cert, derEncodedSelfSignedCertBytes); err != nil { t.Errorf("Unmarshal failed: %v", err) } if !reflect.DeepEqual(cert, derEncodedSelfSignedCert) { t.Errorf("Bad result:\ngot: %+v\nwant: %+v\n", 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(&cert, derEncodedPaypalNULCertBytes); 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(&s, input); 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.Compare([]byte(s.Raw), input) != 0 { t.Errorf("bad value for Raw: got %x want %x", s.Raw, input) } } 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}}, SignatureAlgorithm: AlgorithmIdentifier{Algorithm: ObjectIdentifier{1, 2, 840, 113549, 1, 1, 5}}, Issuer: RDNSequence{ RelativeDistinguishedName{AttributeTypeAndValue{Type: ObjectIdentifier{2, 5, 4, 6}, Value: "XX"}}, RelativeDistinguishedName{AttributeTypeAndValue{Type: ObjectIdentifier{2, 5, 4, 8}, Value: "Some-State"}}, RelativeDistinguishedName{AttributeTypeAndValue{Type: ObjectIdentifier{2, 5, 4, 7}, Value: "City"}}, RelativeDistinguishedName{AttributeTypeAndValue{Type: ObjectIdentifier{2, 5, 4, 10}, Value: "Internet Widgits Pty Ltd"}}, RelativeDistinguishedName{AttributeTypeAndValue{Type: ObjectIdentifier{2, 5, 4, 3}, Value: "false.example.com"}}, RelativeDistinguishedName{AttributeTypeAndValue{Type: ObjectIdentifier{1, 2, 840, 113549, 1, 9, 1}, Value: "false@example.com"}}, }, Validity: Validity{NotBefore: &time.Time{Year: 2009, Month: 10, Day: 8, Hour: 0, Minute: 25, Second: 53, Weekday: 0, ZoneOffset: 0, Zone: ""}, NotAfter: &time.Time{Year: 2010, Month: 10, Day: 8, Hour: 0, Minute: 25, Second: 53, Weekday: 0, ZoneOffset: 0, Zone: ""}}, Subject: RDNSequence{ RelativeDistinguishedName{AttributeTypeAndValue{Type: ObjectIdentifier{2, 5, 4, 6}, Value: "XX"}}, RelativeDistinguishedName{AttributeTypeAndValue{Type: ObjectIdentifier{2, 5, 4, 8}, Value: "Some-State"}}, RelativeDistinguishedName{AttributeTypeAndValue{Type: ObjectIdentifier{2, 5, 4, 7}, Value: "City"}}, RelativeDistinguishedName{AttributeTypeAndValue{Type: ObjectIdentifier{2, 5, 4, 10}, Value: "Internet Widgits Pty Ltd"}}, RelativeDistinguishedName{AttributeTypeAndValue{Type: ObjectIdentifier{2, 5, 4, 3}, Value: "false.example.com"}}, RelativeDistinguishedName{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, 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