Adding upstream version 1.20.14.upstream/1.20.14upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 540 insertions, 0 deletions

diff --git a/src/encoding/base64/base64_test.go b/src/encoding/base64/base64_test.go
new file mode 100644
index 0000000..0ad88eb
--- /dev/null
+++ b/src/encoding/base64/base64_test.go
@@ -0,0 +1,540 @@
+// 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 base64
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"io"
+	"reflect"
+	"runtime/debug"
+	"strings"
+	"testing"
+	"time"
+)
+
+type testpair struct {
+	decoded, encoded string
+}
+
+var pairs = []testpair{
+	// RFC 3548 examples
+	{"\x14\xfb\x9c\x03\xd9\x7e", "FPucA9l+"},
+	{"\x14\xfb\x9c\x03\xd9", "FPucA9k="},
+	{"\x14\xfb\x9c\x03", "FPucAw=="},
+
+	// RFC 4648 examples
+	{"", ""},
+	{"f", "Zg=="},
+	{"fo", "Zm8="},
+	{"foo", "Zm9v"},
+	{"foob", "Zm9vYg=="},
+	{"fooba", "Zm9vYmE="},
+	{"foobar", "Zm9vYmFy"},
+
+	// Wikipedia examples
+	{"sure.", "c3VyZS4="},
+	{"sure", "c3VyZQ=="},
+	{"sur", "c3Vy"},
+	{"su", "c3U="},
+	{"leasure.", "bGVhc3VyZS4="},
+	{"easure.", "ZWFzdXJlLg=="},
+	{"asure.", "YXN1cmUu"},
+	{"sure.", "c3VyZS4="},
+}
+
+// Do nothing to a reference base64 string (leave in standard format)
+func stdRef(ref string) string {
+	return ref
+}
+
+// Convert a reference string to URL-encoding
+func urlRef(ref string) string {
+	ref = strings.ReplaceAll(ref, "+", "-")
+	ref = strings.ReplaceAll(ref, "/", "_")
+	return ref
+}
+
+// Convert a reference string to raw, unpadded format
+func rawRef(ref string) string {
+	return strings.TrimRight(ref, "=")
+}
+
+// Both URL and unpadding conversions
+func rawURLRef(ref string) string {
+	return rawRef(urlRef(ref))
+}
+
+// A nonstandard encoding with a funny padding character, for testing
+var funnyEncoding = NewEncoding(encodeStd).WithPadding(rune('@'))
+
+func funnyRef(ref string) string {
+	return strings.ReplaceAll(ref, "=", "@")
+}
+
+type encodingTest struct {
+	enc  *Encoding           // Encoding to test
+	conv func(string) string // Reference string converter
+}
+
+var encodingTests = []encodingTest{
+	{StdEncoding, stdRef},
+	{URLEncoding, urlRef},
+	{RawStdEncoding, rawRef},
+	{RawURLEncoding, rawURLRef},
+	{funnyEncoding, funnyRef},
+	{StdEncoding.Strict(), stdRef},
+	{URLEncoding.Strict(), urlRef},
+	{RawStdEncoding.Strict(), rawRef},
+	{RawURLEncoding.Strict(), rawURLRef},
+	{funnyEncoding.Strict(), funnyRef},
+}
+
+var bigtest = testpair{
+	"Twas brillig, and the slithy toves",
+	"VHdhcyBicmlsbGlnLCBhbmQgdGhlIHNsaXRoeSB0b3Zlcw==",
+}
+
+func testEqual(t *testing.T, msg string, args ...any) bool {
+	t.Helper()
+	if args[len(args)-2] != args[len(args)-1] {
+		t.Errorf(msg, args...)
+		return false
+	}
+	return true
+}
+
+func TestEncode(t *testing.T) {
+	for _, p := range pairs {
+		for _, tt := range encodingTests {
+			got := tt.enc.EncodeToString([]byte(p.decoded))
+			testEqual(t, "Encode(%q) = %q, want %q", p.decoded,
+				got, tt.conv(p.encoded))
+		}
+	}
+}
+
+func TestEncoder(t *testing.T) {
+	for _, p := range pairs {
+		bb := &strings.Builder{}
+		encoder := NewEncoder(StdEncoding, bb)
+		encoder.Write([]byte(p.decoded))
+		encoder.Close()
+		testEqual(t, "Encode(%q) = %q, want %q", p.decoded, bb.String(), p.encoded)
+	}
+}
+
+func TestEncoderBuffering(t *testing.T) {
+	input := []byte(bigtest.decoded)
+	for bs := 1; bs <= 12; bs++ {
+		bb := &strings.Builder{}
+		encoder := NewEncoder(StdEncoding, bb)
+		for pos := 0; pos < len(input); pos += bs {
+			end := pos + bs
+			if end > len(input) {
+				end = len(input)
+			}
+			n, err := encoder.Write(input[pos:end])
+			testEqual(t, "Write(%q) gave error %v, want %v", input[pos:end], err, error(nil))
+			testEqual(t, "Write(%q) gave length %v, want %v", input[pos:end], n, end-pos)
+		}
+		err := encoder.Close()
+		testEqual(t, "Close gave error %v, want %v", err, error(nil))
+		testEqual(t, "Encoding/%d of %q = %q, want %q", bs, bigtest.decoded, bb.String(), bigtest.encoded)
+	}
+}
+
+func TestDecode(t *testing.T) {
+	for _, p := range pairs {
+		for _, tt := range encodingTests {
+			encoded := tt.conv(p.encoded)
+			dbuf := make([]byte, tt.enc.DecodedLen(len(encoded)))
+			count, err := tt.enc.Decode(dbuf, []byte(encoded))
+			testEqual(t, "Decode(%q) = error %v, want %v", encoded, err, error(nil))
+			testEqual(t, "Decode(%q) = length %v, want %v", encoded, count, len(p.decoded))
+			testEqual(t, "Decode(%q) = %q, want %q", encoded, string(dbuf[0:count]), p.decoded)
+
+			dbuf, err = tt.enc.DecodeString(encoded)
+			testEqual(t, "DecodeString(%q) = error %v, want %v", encoded, err, error(nil))
+			testEqual(t, "DecodeString(%q) = %q, want %q", encoded, string(dbuf), p.decoded)
+		}
+	}
+}
+
+func TestDecoder(t *testing.T) {
+	for _, p := range pairs {
+		decoder := NewDecoder(StdEncoding, strings.NewReader(p.encoded))
+		dbuf := make([]byte, StdEncoding.DecodedLen(len(p.encoded)))
+		count, err := decoder.Read(dbuf)
+		if err != nil && err != io.EOF {
+			t.Fatal("Read failed", err)
+		}
+		testEqual(t, "Read from %q = length %v, want %v", p.encoded, count, len(p.decoded))
+		testEqual(t, "Decoding of %q = %q, want %q", p.encoded, string(dbuf[0:count]), p.decoded)
+		if err != io.EOF {
+			_, err = decoder.Read(dbuf)
+		}
+		testEqual(t, "Read from %q = %v, want %v", p.encoded, err, io.EOF)
+	}
+}
+
+func TestDecoderBuffering(t *testing.T) {
+	for bs := 1; bs <= 12; bs++ {
+		decoder := NewDecoder(StdEncoding, strings.NewReader(bigtest.encoded))
+		buf := make([]byte, len(bigtest.decoded)+12)
+		var total int
+		var n int
+		var err error
+		for total = 0; total < len(bigtest.decoded) && err == nil; {
+			n, err = decoder.Read(buf[total : total+bs])
+			total += n
+		}
+		if err != nil && err != io.EOF {
+			t.Errorf("Read from %q at pos %d = %d, unexpected error %v", bigtest.encoded, total, n, err)
+		}
+		testEqual(t, "Decoding/%d of %q = %q, want %q", bs, bigtest.encoded, string(buf[0:total]), bigtest.decoded)
+	}
+}
+
+func TestDecodeCorrupt(t *testing.T) {
+	testCases := []struct {
+		input  string
+		offset int // -1 means no corruption.
+	}{
+		{"", -1},
+		{"\n", -1},
+		{"AAA=\n", -1},
+		{"AAAA\n", -1},
+		{"!!!!", 0},
+		{"====", 0},
+		{"x===", 1},
+		{"=AAA", 0},
+		{"A=AA", 1},
+		{"AA=A", 2},
+		{"AA==A", 4},
+		{"AAA=AAAA", 4},
+		{"AAAAA", 4},
+		{"AAAAAA", 4},
+		{"A=", 1},
+		{"A==", 1},
+		{"AA=", 3},
+		{"AA==", -1},
+		{"AAA=", -1},
+		{"AAAA", -1},
+		{"AAAAAA=", 7},
+		{"YWJjZA=====", 8},
+		{"A!\n", 1},
+		{"A=\n", 1},
+	}
+	for _, tc := range testCases {
+		dbuf := make([]byte, StdEncoding.DecodedLen(len(tc.input)))
+		_, err := StdEncoding.Decode(dbuf, []byte(tc.input))
+		if tc.offset == -1 {
+			if err != nil {
+				t.Error("Decoder wrongly detected corruption in", tc.input)
+			}
+			continue
+		}
+		switch err := err.(type) {
+		case CorruptInputError:
+			testEqual(t, "Corruption in %q at offset %v, want %v", tc.input, int(err), tc.offset)
+		default:
+			t.Error("Decoder failed to detect corruption in", tc)
+		}
+	}
+}
+
+func TestDecodeBounds(t *testing.T) {
+	var buf [32]byte
+	s := StdEncoding.EncodeToString(buf[:])
+	defer func() {
+		if err := recover(); err != nil {
+			t.Fatalf("Decode panicked unexpectedly: %v\n%s", err, debug.Stack())
+		}
+	}()
+	n, err := StdEncoding.Decode(buf[:], []byte(s))
+	if n != len(buf) || err != nil {
+		t.Fatalf("StdEncoding.Decode = %d, %v, want %d, nil", n, err, len(buf))
+	}
+}
+
+func TestEncodedLen(t *testing.T) {
+	for _, tt := range []struct {
+		enc  *Encoding
+		n    int
+		want int
+	}{
+		{RawStdEncoding, 0, 0},
+		{RawStdEncoding, 1, 2},
+		{RawStdEncoding, 2, 3},
+		{RawStdEncoding, 3, 4},
+		{RawStdEncoding, 7, 10},
+		{StdEncoding, 0, 0},
+		{StdEncoding, 1, 4},
+		{StdEncoding, 2, 4},
+		{StdEncoding, 3, 4},
+		{StdEncoding, 4, 8},
+		{StdEncoding, 7, 12},
+	} {
+		if got := tt.enc.EncodedLen(tt.n); got != tt.want {
+			t.Errorf("EncodedLen(%d): got %d, want %d", tt.n, got, tt.want)
+		}
+	}
+}
+
+func TestDecodedLen(t *testing.T) {
+	for _, tt := range []struct {
+		enc  *Encoding
+		n    int
+		want int
+	}{
+		{RawStdEncoding, 0, 0},
+		{RawStdEncoding, 2, 1},
+		{RawStdEncoding, 3, 2},
+		{RawStdEncoding, 4, 3},
+		{RawStdEncoding, 10, 7},
+		{StdEncoding, 0, 0},
+		{StdEncoding, 4, 3},
+		{StdEncoding, 8, 6},
+	} {
+		if got := tt.enc.DecodedLen(tt.n); got != tt.want {
+			t.Errorf("DecodedLen(%d): got %d, want %d", tt.n, got, tt.want)
+		}
+	}
+}
+
+func TestBig(t *testing.T) {
+	n := 3*1000 + 1
+	raw := make([]byte, n)
+	const alpha = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
+	for i := 0; i < n; i++ {
+		raw[i] = alpha[i%len(alpha)]
+	}
+	encoded := new(bytes.Buffer)
+	w := NewEncoder(StdEncoding, encoded)
+	nn, err := w.Write(raw)
+	if nn != n || err != nil {
+		t.Fatalf("Encoder.Write(raw) = %d, %v want %d, nil", nn, err, n)
+	}
+	err = w.Close()
+	if err != nil {
+		t.Fatalf("Encoder.Close() = %v want nil", err)
+	}
+	decoded, err := io.ReadAll(NewDecoder(StdEncoding, encoded))
+	if err != nil {
+		t.Fatalf("io.ReadAll(NewDecoder(...)): %v", err)
+	}
+
+	if !bytes.Equal(raw, decoded) {
+		var i int
+		for i = 0; i < len(decoded) && i < len(raw); i++ {
+			if decoded[i] != raw[i] {
+				break
+			}
+		}
+		t.Errorf("Decode(Encode(%d-byte string)) failed at offset %d", n, i)
+	}
+}
+
+func TestNewLineCharacters(t *testing.T) {
+	// Each of these should decode to the string "sure", without errors.
+	const expected = "sure"
+	examples := []string{
+		"c3VyZQ==",
+		"c3VyZQ==\r",
+		"c3VyZQ==\n",
+		"c3VyZQ==\r\n",
+		"c3VyZ\r\nQ==",
+		"c3V\ryZ\nQ==",
+		"c3V\nyZ\rQ==",
+		"c3VyZ\nQ==",
+		"c3VyZQ\n==",
+		"c3VyZQ=\n=",
+		"c3VyZQ=\r\n\r\n=",
+	}
+	for _, e := range examples {
+		buf, err := StdEncoding.DecodeString(e)
+		if err != nil {
+			t.Errorf("Decode(%q) failed: %v", e, err)
+			continue
+		}
+		if s := string(buf); s != expected {
+			t.Errorf("Decode(%q) = %q, want %q", e, s, expected)
+		}
+	}
+}
+
+type nextRead struct {
+	n   int   // bytes to return
+	err error // error to return
+}
+
+// faultInjectReader returns data from source, rate-limited
+// and with the errors as written to nextc.
+type faultInjectReader struct {
+	source string
+	nextc  <-chan nextRead
+}
+
+func (r *faultInjectReader) Read(p []byte) (int, error) {
+	nr := <-r.nextc
+	if len(p) > nr.n {
+		p = p[:nr.n]
+	}
+	n := copy(p, r.source)
+	r.source = r.source[n:]
+	return n, nr.err
+}
+
+// tests that we don't ignore errors from our underlying reader
+func TestDecoderIssue3577(t *testing.T) {
+	next := make(chan nextRead, 10)
+	wantErr := errors.New("my error")
+	next <- nextRead{5, nil}
+	next <- nextRead{10, wantErr}
+	next <- nextRead{0, wantErr}
+	d := NewDecoder(StdEncoding, &faultInjectReader{
+		source: "VHdhcyBicmlsbGlnLCBhbmQgdGhlIHNsaXRoeSB0b3Zlcw==", // twas brillig...
+		nextc:  next,
+	})
+	errc := make(chan error, 1)
+	go func() {
+		_, err := io.ReadAll(d)
+		errc <- err
+	}()
+	select {
+	case err := <-errc:
+		if err != wantErr {
+			t.Errorf("got error %v; want %v", err, wantErr)
+		}
+	case <-time.After(5 * time.Second):
+		t.Errorf("timeout; Decoder blocked without returning an error")
+	}
+}
+
+func TestDecoderIssue4779(t *testing.T) {
+	encoded := `CP/EAT8AAAEF
+AQEBAQEBAAAAAAAAAAMAAQIEBQYHCAkKCwEAAQUBAQEBAQEAAAAAAAAAAQACAwQFBgcICQoLEAAB
+BAEDAgQCBQcGCAUDDDMBAAIRAwQhEjEFQVFhEyJxgTIGFJGhsUIjJBVSwWIzNHKC0UMHJZJT8OHx
+Y3M1FqKygyZEk1RkRcKjdDYX0lXiZfKzhMPTdePzRieUpIW0lcTU5PSltcXV5fVWZnaGlqa2xtbm
+9jdHV2d3h5ent8fX5/cRAAICAQIEBAMEBQYHBwYFNQEAAhEDITESBEFRYXEiEwUygZEUobFCI8FS
+0fAzJGLhcoKSQ1MVY3M08SUGFqKygwcmNcLSRJNUoxdkRVU2dGXi8rOEw9N14/NGlKSFtJXE1OT0
+pbXF1eX1VmZ2hpamtsbW5vYnN0dXZ3eHl6e3x//aAAwDAQACEQMRAD8A9VSSSSUpJJJJSkkkJ+Tj
+1kiy1jCJJDnAcCTykpKkuQ6p/jN6FgmxlNduXawwAzaGH+V6jn/R/wCt71zdn+N/qL3kVYFNYB4N
+ji6PDVjWpKp9TSXnvTf8bFNjg3qOEa2n6VlLpj/rT/pf567DpX1i6L1hs9Py67X8mqdtg/rUWbbf
++gkp0kkkklKSSSSUpJJJJT//0PVUkkklKVLq3WMDpGI7KzrNjADtYNXvI/Mqr/Pd/q9W3vaxjnvM
+NaCXE9gNSvGPrf8AWS3qmba5jjsJhoB0DAf0NDf6sevf+/lf8Hj0JJATfWT6/dV6oXU1uOLQeKKn
+EQP+Hubtfe/+R7Mf/g7f5xcocp++Z11JMCJPgFBxOg7/AOuqDx8I/ikpkXkmSdU8mJIJA/O8EMAy
+j+mSARB/17pKVXYWHXjsj7yIex0PadzXMO1zT5KHoNA3HT8ietoGhgjsfA+CSnvvqh/jJtqsrwOv
+2b6NGNzXfTYexzJ+nU7/ALkf4P8Awv6P9KvTQQ4AgyDqCF85Pho3CTB7eHwXoH+LT65uZbX9X+o2
+bqbPb06551Y4
+`
+	encodedShort := strings.ReplaceAll(encoded, "\n", "")
+
+	dec := NewDecoder(StdEncoding, strings.NewReader(encoded))
+	res1, err := io.ReadAll(dec)
+	if err != nil {
+		t.Errorf("ReadAll failed: %v", err)
+	}
+
+	dec = NewDecoder(StdEncoding, strings.NewReader(encodedShort))
+	var res2 []byte
+	res2, err = io.ReadAll(dec)
+	if err != nil {
+		t.Errorf("ReadAll failed: %v", err)
+	}
+
+	if !bytes.Equal(res1, res2) {
+		t.Error("Decoded results not equal")
+	}
+}
+
+func TestDecoderIssue7733(t *testing.T) {
+	s, err := StdEncoding.DecodeString("YWJjZA=====")
+	want := CorruptInputError(8)
+	if !reflect.DeepEqual(want, err) {
+		t.Errorf("Error = %v; want CorruptInputError(8)", err)
+	}
+	if string(s) != "abcd" {
+		t.Errorf("DecodeString = %q; want abcd", s)
+	}
+}
+
+func TestDecoderIssue15656(t *testing.T) {
+	_, err := StdEncoding.Strict().DecodeString("WvLTlMrX9NpYDQlEIFlnDB==")
+	want := CorruptInputError(22)
+	if !reflect.DeepEqual(want, err) {
+		t.Errorf("Error = %v; want CorruptInputError(22)", err)
+	}
+	_, err = StdEncoding.Strict().DecodeString("WvLTlMrX9NpYDQlEIFlnDA==")
+	if err != nil {
+		t.Errorf("Error = %v; want nil", err)
+	}
+	_, err = StdEncoding.DecodeString("WvLTlMrX9NpYDQlEIFlnDB==")
+	if err != nil {
+		t.Errorf("Error = %v; want nil", err)
+	}
+}
+
+func BenchmarkEncodeToString(b *testing.B) {
+	data := make([]byte, 8192)
+	b.SetBytes(int64(len(data)))
+	for i := 0; i < b.N; i++ {
+		StdEncoding.EncodeToString(data)
+	}
+}
+
+func BenchmarkDecodeString(b *testing.B) {
+	sizes := []int{2, 4, 8, 64, 8192}
+	benchFunc := func(b *testing.B, benchSize int) {
+		data := StdEncoding.EncodeToString(make([]byte, benchSize))
+		b.SetBytes(int64(len(data)))
+		b.ResetTimer()
+		for i := 0; i < b.N; i++ {
+			StdEncoding.DecodeString(data)
+		}
+	}
+	for _, size := range sizes {
+		b.Run(fmt.Sprintf("%d", size), func(b *testing.B) {
+			benchFunc(b, size)
+		})
+	}
+}
+
+func BenchmarkNewEncoding(b *testing.B) {
+	b.SetBytes(int64(len(Encoding{}.decodeMap)))
+	for i := 0; i < b.N; i++ {
+		e := NewEncoding(encodeStd)
+		for _, v := range e.decodeMap {
+			_ = v
+		}
+	}
+}
+
+func TestDecoderRaw(t *testing.T) {
+	source := "AAAAAA"
+	want := []byte{0, 0, 0, 0}
+
+	// Direct.
+	dec1, err := RawURLEncoding.DecodeString(source)
+	if err != nil || !bytes.Equal(dec1, want) {
+		t.Errorf("RawURLEncoding.DecodeString(%q) = %x, %v, want %x, nil", source, dec1, err, want)
+	}
+
+	// Through reader. Used to fail.
+	r := NewDecoder(RawURLEncoding, bytes.NewReader([]byte(source)))
+	dec2, err := io.ReadAll(io.LimitReader(r, 100))
+	if err != nil || !bytes.Equal(dec2, want) {
+		t.Errorf("reading NewDecoder(RawURLEncoding, %q) = %x, %v, want %x, nil", source, dec2, err, want)
+	}
+
+	// Should work with padding.
+	r = NewDecoder(URLEncoding, bytes.NewReader([]byte(source+"==")))
+	dec3, err := io.ReadAll(r)
+	if err != nil || !bytes.Equal(dec3, want) {
+		t.Errorf("reading NewDecoder(URLEncoding, %q) = %x, %v, want %x, nil", source+"==", dec3, err, want)
+	}
+}