mirror of https://github.com/goccy/go-json.git
parent
a2149a5b25
commit
cdbc29239b
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@ -4015,3 +4015,18 @@ func TestIssue408(t *testing.T) {
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t.Fatal(err)
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}
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}
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func TestIssue429(t *testing.T) {
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var x struct {
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N int32
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}
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for _, b := range []string{
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`{"\u"`,
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`{"\u0"`,
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`{"\u00"`,
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} {
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if err := json.Unmarshal([]byte(b), &x); err == nil {
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t.Errorf("unexpected success")
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}
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}
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}
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@ -158,49 +158,53 @@ func (d *structDecoder) tryOptimize() {
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}
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// decode from '\uXXXX'
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func decodeKeyCharByUnicodeRune(buf []byte, cursor int64) ([]byte, int64) {
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func decodeKeyCharByUnicodeRune(buf []byte, cursor int64) ([]byte, int64, error) {
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const defaultOffset = 4
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const surrogateOffset = 6
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if cursor+defaultOffset >= int64(len(buf)) {
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return nil, 0, errors.ErrUnexpectedEndOfJSON("escaped string", cursor)
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}
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r := unicodeToRune(buf[cursor : cursor+defaultOffset])
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if utf16.IsSurrogate(r) {
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cursor += defaultOffset
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if cursor+surrogateOffset >= int64(len(buf)) || buf[cursor] != '\\' || buf[cursor+1] != 'u' {
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return []byte(string(unicode.ReplacementChar)), cursor + defaultOffset - 1
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return []byte(string(unicode.ReplacementChar)), cursor + defaultOffset - 1, nil
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}
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cursor += 2
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r2 := unicodeToRune(buf[cursor : cursor+defaultOffset])
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if r := utf16.DecodeRune(r, r2); r != unicode.ReplacementChar {
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return []byte(string(r)), cursor + defaultOffset - 1
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return []byte(string(r)), cursor + defaultOffset - 1, nil
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}
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}
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return []byte(string(r)), cursor + defaultOffset - 1
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return []byte(string(r)), cursor + defaultOffset - 1, nil
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}
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func decodeKeyCharByEscapedChar(buf []byte, cursor int64) ([]byte, int64) {
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func decodeKeyCharByEscapedChar(buf []byte, cursor int64) ([]byte, int64, error) {
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c := buf[cursor]
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cursor++
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switch c {
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case '"':
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return []byte{'"'}, cursor
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return []byte{'"'}, cursor, nil
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case '\\':
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return []byte{'\\'}, cursor
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return []byte{'\\'}, cursor, nil
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case '/':
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return []byte{'/'}, cursor
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return []byte{'/'}, cursor, nil
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case 'b':
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return []byte{'\b'}, cursor
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return []byte{'\b'}, cursor, nil
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case 'f':
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return []byte{'\f'}, cursor
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return []byte{'\f'}, cursor, nil
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case 'n':
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return []byte{'\n'}, cursor
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return []byte{'\n'}, cursor, nil
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case 'r':
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return []byte{'\r'}, cursor
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return []byte{'\r'}, cursor, nil
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case 't':
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return []byte{'\t'}, cursor
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return []byte{'\t'}, cursor, nil
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case 'u':
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return decodeKeyCharByUnicodeRune(buf, cursor)
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}
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return nil, cursor
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return nil, cursor, nil
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}
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func decodeKeyByBitmapUint8(d *structDecoder, buf []byte, cursor int64) (int64, *structFieldSet, error) {
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@ -242,7 +246,10 @@ func decodeKeyByBitmapUint8(d *structDecoder, buf []byte, cursor int64) (int64,
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return 0, nil, errors.ErrUnexpectedEndOfJSON("string", cursor)
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case '\\':
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cursor++
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chars, nextCursor := decodeKeyCharByEscapedChar(buf, cursor)
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chars, nextCursor, err := decodeKeyCharByEscapedChar(buf, cursor)
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if err != nil {
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return 0, nil, err
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}
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for _, c := range chars {
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curBit &= bitmap[keyIdx][largeToSmallTable[c]]
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if curBit == 0 {
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@ -305,7 +312,10 @@ func decodeKeyByBitmapUint16(d *structDecoder, buf []byte, cursor int64) (int64,
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return 0, nil, errors.ErrUnexpectedEndOfJSON("string", cursor)
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case '\\':
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cursor++
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chars, nextCursor := decodeKeyCharByEscapedChar(buf, cursor)
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chars, nextCursor, err := decodeKeyCharByEscapedChar(buf, cursor)
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if err != nil {
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return 0, nil, err
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}
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for _, c := range chars {
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curBit &= bitmap[keyIdx][largeToSmallTable[c]]
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if curBit == 0 {
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