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Source file src/encoding/asn1/marshal_test.go

Documentation: encoding/asn1

     1  // Copyright 2009 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package asn1
     6  
     7  import (
     8  	"bytes"
     9  	"encoding/hex"
    10  	"math/big"
    11  	"reflect"
    12  	"strings"
    13  	"testing"
    14  	"time"
    15  )
    16  
    17  type intStruct struct {
    18  	A int
    19  }
    20  
    21  type twoIntStruct struct {
    22  	A int
    23  	B int
    24  }
    25  
    26  type bigIntStruct struct {
    27  	A *big.Int
    28  }
    29  
    30  type nestedStruct struct {
    31  	A intStruct
    32  }
    33  
    34  type rawContentsStruct struct {
    35  	Raw RawContent
    36  	A   int
    37  }
    38  
    39  type implicitTagTest struct {
    40  	A int `asn1:"implicit,tag:5"`
    41  }
    42  
    43  type explicitTagTest struct {
    44  	A int `asn1:"explicit,tag:5"`
    45  }
    46  
    47  type flagTest struct {
    48  	A Flag `asn1:"tag:0,optional"`
    49  }
    50  
    51  type generalizedTimeTest struct {
    52  	A time.Time `asn1:"generalized"`
    53  }
    54  
    55  type ia5StringTest struct {
    56  	A string `asn1:"ia5"`
    57  }
    58  
    59  type printableStringTest struct {
    60  	A string `asn1:"printable"`
    61  }
    62  
    63  type genericStringTest struct {
    64  	A string
    65  }
    66  
    67  type optionalRawValueTest struct {
    68  	A RawValue `asn1:"optional"`
    69  }
    70  
    71  type omitEmptyTest struct {
    72  	A []string `asn1:"omitempty"`
    73  }
    74  
    75  type defaultTest struct {
    76  	A int `asn1:"optional,default:1"`
    77  }
    78  
    79  type applicationTest struct {
    80  	A int `asn1:"application,tag:0"`
    81  	B int `asn1:"application,tag:1,explicit"`
    82  }
    83  
    84  type privateTest struct {
    85  	A int `asn1:"private,tag:0"`
    86  	B int `asn1:"private,tag:1,explicit"`
    87  	C int `asn1:"private,tag:31"`  // tag size should be 2 octet
    88  	D int `asn1:"private,tag:128"` // tag size should be 3 octet
    89  }
    90  
    91  type numericStringTest struct {
    92  	A string `asn1:"numeric"`
    93  }
    94  
    95  type testSET []int
    96  
    97  var PST = time.FixedZone("PST", -8*60*60)
    98  
    99  type marshalTest struct {
   100  	in  interface{}
   101  	out string // hex encoded
   102  }
   103  
   104  func farFuture() time.Time {
   105  	t, err := time.Parse(time.RFC3339, "2100-04-05T12:01:01Z")
   106  	if err != nil {
   107  		panic(err)
   108  	}
   109  	return t
   110  }
   111  
   112  var marshalTests = []marshalTest{
   113  	{10, "02010a"},
   114  	{127, "02017f"},
   115  	{128, "02020080"},
   116  	{-128, "020180"},
   117  	{-129, "0202ff7f"},
   118  	{intStruct{64}, "3003020140"},
   119  	{bigIntStruct{big.NewInt(0x123456)}, "30050203123456"},
   120  	{twoIntStruct{64, 65}, "3006020140020141"},
   121  	{nestedStruct{intStruct{127}}, "3005300302017f"},
   122  	{[]byte{1, 2, 3}, "0403010203"},
   123  	{implicitTagTest{64}, "3003850140"},
   124  	{explicitTagTest{64}, "3005a503020140"},
   125  	{flagTest{true}, "30028000"},
   126  	{flagTest{false}, "3000"},
   127  	{time.Unix(0, 0).UTC(), "170d3730303130313030303030305a"},
   128  	{time.Unix(1258325776, 0).UTC(), "170d3039313131353232353631365a"},
   129  	{time.Unix(1258325776, 0).In(PST), "17113039313131353134353631362d30383030"},
   130  	{farFuture(), "180f32313030303430353132303130315a"},
   131  	{generalizedTimeTest{time.Unix(1258325776, 0).UTC()}, "3011180f32303039313131353232353631365a"},
   132  	{BitString{[]byte{0x80}, 1}, "03020780"},
   133  	{BitString{[]byte{0x81, 0xf0}, 12}, "03030481f0"},
   134  	{ObjectIdentifier([]int{1, 2, 3, 4}), "06032a0304"},
   135  	{ObjectIdentifier([]int{1, 2, 840, 133549, 1, 1, 5}), "06092a864888932d010105"},
   136  	{ObjectIdentifier([]int{2, 100, 3}), "0603813403"},
   137  	{"test", "130474657374"},
   138  	{
   139  		"" +
   140  			"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" +
   141  			"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" +
   142  			"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" +
   143  			"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx", // This is 127 times 'x'
   144  		"137f" +
   145  			"7878787878787878787878787878787878787878787878787878787878787878" +
   146  			"7878787878787878787878787878787878787878787878787878787878787878" +
   147  			"7878787878787878787878787878787878787878787878787878787878787878" +
   148  			"78787878787878787878787878787878787878787878787878787878787878",
   149  	},
   150  	{
   151  		"" +
   152  			"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" +
   153  			"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" +
   154  			"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" +
   155  			"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx", // This is 128 times 'x'
   156  		"138180" +
   157  			"7878787878787878787878787878787878787878787878787878787878787878" +
   158  			"7878787878787878787878787878787878787878787878787878787878787878" +
   159  			"7878787878787878787878787878787878787878787878787878787878787878" +
   160  			"7878787878787878787878787878787878787878787878787878787878787878",
   161  	},
   162  	{ia5StringTest{"test"}, "3006160474657374"},
   163  	{optionalRawValueTest{}, "3000"},
   164  	{printableStringTest{"test"}, "3006130474657374"},
   165  	{printableStringTest{"test*"}, "30071305746573742a"},
   166  	{genericStringTest{"test"}, "3006130474657374"},
   167  	{genericStringTest{"test*"}, "30070c05746573742a"},
   168  	{genericStringTest{"test&"}, "30070c057465737426"},
   169  	{rawContentsStruct{nil, 64}, "3003020140"},
   170  	{rawContentsStruct{[]byte{0x30, 3, 1, 2, 3}, 64}, "3003010203"},
   171  	{RawValue{Tag: 1, Class: 2, IsCompound: false, Bytes: []byte{1, 2, 3}}, "8103010203"},
   172  	{testSET([]int{10}), "310302010a"},
   173  	{omitEmptyTest{[]string{}}, "3000"},
   174  	{omitEmptyTest{[]string{"1"}}, "30053003130131"},
   175  	{"Σ", "0c02cea3"},
   176  	{defaultTest{0}, "3003020100"},
   177  	{defaultTest{1}, "3000"},
   178  	{defaultTest{2}, "3003020102"},
   179  	{applicationTest{1, 2}, "30084001016103020102"},
   180  	{privateTest{1, 2, 3, 4}, "3011c00101e103020102df1f0103df81000104"},
   181  	{numericStringTest{"1 9"}, "30051203312039"},
   182  }
   183  
   184  func TestMarshal(t *testing.T) {
   185  	for i, test := range marshalTests {
   186  		data, err := Marshal(test.in)
   187  		if err != nil {
   188  			t.Errorf("#%d failed: %s", i, err)
   189  		}
   190  		out, _ := hex.DecodeString(test.out)
   191  		if !bytes.Equal(out, data) {
   192  			t.Errorf("#%d got: %x want %x\n\t%q\n\t%q", i, data, out, data, out)
   193  
   194  		}
   195  	}
   196  }
   197  
   198  type marshalWithParamsTest struct {
   199  	in     interface{}
   200  	params string
   201  	out    string // hex encoded
   202  }
   203  
   204  var marshalWithParamsTests = []marshalWithParamsTest{
   205  	{intStruct{10}, "set", "310302010a"},
   206  	{intStruct{10}, "application", "600302010a"},
   207  	{intStruct{10}, "private", "e00302010a"},
   208  }
   209  
   210  func TestMarshalWithParams(t *testing.T) {
   211  	for i, test := range marshalWithParamsTests {
   212  		data, err := MarshalWithParams(test.in, test.params)
   213  		if err != nil {
   214  			t.Errorf("#%d failed: %s", i, err)
   215  		}
   216  		out, _ := hex.DecodeString(test.out)
   217  		if !bytes.Equal(out, data) {
   218  			t.Errorf("#%d got: %x want %x\n\t%q\n\t%q", i, data, out, data, out)
   219  
   220  		}
   221  	}
   222  }
   223  
   224  type marshalErrTest struct {
   225  	in  interface{}
   226  	err string
   227  }
   228  
   229  var marshalErrTests = []marshalErrTest{
   230  	{bigIntStruct{nil}, "empty integer"},
   231  	{numericStringTest{"a"}, "invalid character"},
   232  	{ia5StringTest{"\xb0"}, "invalid character"},
   233  	{printableStringTest{"!"}, "invalid character"},
   234  }
   235  
   236  func TestMarshalError(t *testing.T) {
   237  	for i, test := range marshalErrTests {
   238  		_, err := Marshal(test.in)
   239  		if err == nil {
   240  			t.Errorf("#%d should fail, but success", i)
   241  			continue
   242  		}
   243  
   244  		if !strings.Contains(err.Error(), test.err) {
   245  			t.Errorf("#%d got: %v want %v", i, err, test.err)
   246  		}
   247  	}
   248  }
   249  
   250  func TestInvalidUTF8(t *testing.T) {
   251  	_, err := Marshal(string([]byte{0xff, 0xff}))
   252  	if err == nil {
   253  		t.Errorf("invalid UTF8 string was accepted")
   254  	}
   255  }
   256  
   257  func TestMarshalOID(t *testing.T) {
   258  	var marshalTestsOID = []marshalTest{
   259  		{[]byte("\x06\x01\x30"), "0403060130"}, // bytes format returns a byte sequence \x04
   260  		// {ObjectIdentifier([]int{0}), "060100"}, // returns an error as OID 0.0 has the same encoding
   261  		{[]byte("\x06\x010"), "0403060130"},                // same as above "\x06\x010" = "\x06\x01" + "0"
   262  		{ObjectIdentifier([]int{2, 999, 3}), "0603883703"}, // Example of ITU-T X.690
   263  		{ObjectIdentifier([]int{0, 0}), "060100"},          // zero OID
   264  	}
   265  	for i, test := range marshalTestsOID {
   266  		data, err := Marshal(test.in)
   267  		if err != nil {
   268  			t.Errorf("#%d failed: %s", i, err)
   269  		}
   270  		out, _ := hex.DecodeString(test.out)
   271  		if !bytes.Equal(out, data) {
   272  			t.Errorf("#%d got: %x want %x\n\t%q\n\t%q", i, data, out, data, out)
   273  		}
   274  	}
   275  }
   276  
   277  func TestIssue11130(t *testing.T) {
   278  	data := []byte("\x06\x010") // == \x06\x01\x30 == OID = 0 (the figure)
   279  	var v interface{}
   280  	// v has Zero value here and Elem() would panic
   281  	_, err := Unmarshal(data, &v)
   282  	if err != nil {
   283  		t.Errorf("%v", err)
   284  		return
   285  	}
   286  	if reflect.TypeOf(v).String() != reflect.TypeOf(ObjectIdentifier{}).String() {
   287  		t.Errorf("marshal OID returned an invalid type")
   288  		return
   289  	}
   290  
   291  	data1, err := Marshal(v)
   292  	if err != nil {
   293  		t.Errorf("%v", err)
   294  		return
   295  	}
   296  
   297  	if !bytes.Equal(data, data1) {
   298  		t.Errorf("got: %q, want: %q \n", data1, data)
   299  		return
   300  	}
   301  
   302  	var v1 interface{}
   303  	_, err = Unmarshal(data1, &v1)
   304  	if err != nil {
   305  		t.Errorf("%v", err)
   306  		return
   307  	}
   308  	if !reflect.DeepEqual(v, v1) {
   309  		t.Errorf("got: %#v data=%q , want : %#v data=%q\n ", v1, data1, v, data)
   310  	}
   311  }
   312  
   313  func BenchmarkMarshal(b *testing.B) {
   314  	b.ReportAllocs()
   315  
   316  	for i := 0; i < b.N; i++ {
   317  		for _, test := range marshalTests {
   318  			Marshal(test.in)
   319  		}
   320  	}
   321  }
   322  

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