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// Copyright (C) 2019-2023 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
package logic
import (
"encoding/json"
"fmt"
"strings"
"testing"
"github.com/algorand/go-algorand/test/partitiontest"
"github.com/stretchr/testify/require"
"golang.org/x/text/encoding/unicode"
"golang.org/x/text/encoding/unicode/utf32"
)
// As of go1.10, json implements encoding and decoding of JSON as defined in RFC 7159. https://pkg.go.dev/encoding/json
func TestParseScalar(t *testing.T) {
partitiontest.PartitionTest(t)
t.Parallel()
intScalar := `{"key0": 4160}`
_, err := parseJSON([]byte(intScalar))
require.NoError(t, err)
strScalar := `{"key0": "algo"}`
_, err = parseJSON([]byte(strScalar))
require.NoError(t, err)
}
func TestParseTrailingCommas(t *testing.T) {
partitiontest.PartitionTest(t)
t.Parallel()
for i := 1; i <= 10; i++ {
commas := strings.Repeat(",", i)
intScalar := `{"key0": 4160` + commas + `}`
_, err := parseJSON([]byte(intScalar))
require.Error(t, err)
strScalar := `{"key0": "algo"` + commas + `}`
_, err = parseJSON([]byte(strScalar))
require.Error(t, err)
}
}
func TestParseComments(t *testing.T) {
partitiontest.PartitionTest(t)
t.Parallel()
text := `{"key0": /*comment*/"algo"}`
_, err := parseJSON([]byte(text))
require.Error(t, err)
text = `{"key0": [1,/*comment*/,3]}`
_, err = parseJSON([]byte(text))
require.Error(t, err)
}
func TestParseUnclosed(t *testing.T) {
partitiontest.PartitionTest(t)
t.Parallel()
text := `{"key0": ["algo"}`
_, err := parseJSON([]byte(text))
require.Error(t, err)
text = `{"key0": ["algo"]]}`
_, err = parseJSON([]byte(text))
require.Error(t, err)
text = `{"key0": ["algo"],"key1":{}`
_, err = parseJSON([]byte(text))
require.Error(t, err)
text = `{"key0": ["algo"],"key1":{{}`
_, err = parseJSON([]byte(text))
require.Error(t, err)
text = `{"key0": [1,}]}`
_, err = parseJSON([]byte(text))
require.Error(t, err)
}
func TestParseNested(t *testing.T) {
partitiontest.PartitionTest(t)
t.Parallel()
text := `{"key0": [[1,2,3],[4,5,6]], "key1":{"key10":{"key100":"algo"}}}`
_, err := parseJSON([]byte(text))
require.NoError(t, err)
}
func TestParseWhiteSpace(t *testing.T) {
partitiontest.PartitionTest(t)
t.Parallel()
//empty text
text := ""
_, err := parseJSON([]byte(text))
require.Error(t, err)
//space, tab, new line and carriage return are allowed
text = "{\"key0\": [\t]\n\r}"
_, err = parseJSON([]byte(text))
require.NoError(t, err)
//form feed is not allowed
text = "{\"key0\": [\f]}"
_, err = parseJSON([]byte(text))
require.Error(t, err)
}
func TestParseSpecialValues(t *testing.T) {
partitiontest.PartitionTest(t)
t.Parallel()
text := `{"key0": NaN}`
_, err := parseJSON([]byte(text))
require.Error(t, err)
text = `{"key0": +Inf}`
_, err = parseJSON([]byte(text))
require.Error(t, err)
text = `{"key0": -Inf}`
_, err = parseJSON([]byte(text))
require.Error(t, err)
text = `{"key0": null}`
_, err = parseJSON([]byte(text))
require.NoError(t, err)
text = `{"key0": true}`
_, err = parseJSON([]byte(text))
require.NoError(t, err)
text = `{"key0": false}`
_, err = parseJSON([]byte(text))
require.NoError(t, err)
}
func TestParseHexValue(t *testing.T) {
partitiontest.PartitionTest(t)
t.Parallel()
text := `{"key0": 0x1}`
_, err := parseJSON([]byte(text))
require.Error(t, err)
text = `{"key0": 0xFF}`
_, err = parseJSON([]byte(text))
require.Error(t, err)
}
func TestParseBigNum(t *testing.T) {
partitiontest.PartitionTest(t)
t.Parallel()
// values in range uint64 parsed correctly
// parse 0
text := `{"key0":0}`
msg, err := parseJSON([]byte(text))
require.NoError(t, err)
require.True(t, json.Valid([]byte(text)))
require.Equal(t, "0", string(msg["key0"]))
// parse int
text = `{"key0":123456789}`
msg, err = parseJSON([]byte(text))
require.NoError(t, err)
require.True(t, json.Valid([]byte(text)))
require.Equal(t, "123456789", string(msg["key0"]))
// parse 2^64-1
text = `{"key0":18446744073709551615}`
msg, err = parseJSON([]byte(text))
require.NoError(t, err)
require.True(t, json.Valid([]byte(text)))
require.Equal(t, "18446744073709551615", string(msg["key0"]))
}
func TestParseArrays(t *testing.T) {
partitiontest.PartitionTest(t)
t.Parallel()
text := `{"key0": [,1,]}`
_, err := parseJSON([]byte(text))
require.Error(t, err)
text = "{\"key0\":[1\n]}"
_, err = parseJSON([]byte(text))
require.NoError(t, err)
text = `{"key0": [[1]]}`
_, err = parseJSON([]byte(text))
require.NoError(t, err)
}
func TestParseKeys(t *testing.T) {
partitiontest.PartitionTest(t)
t.Parallel()
text := `{"": 1}`
_, err := parseJSON([]byte(text))
require.NoError(t, err)
text = `{"": "algo"}`
_, err = parseJSON([]byte(text))
require.NoError(t, err)
text = `{"\u0061": 1}`
parsed, err := parseJSON([]byte(text))
require.NoError(t, err)
require.Equal(t, "1", string(parsed["\u0061"]))
require.Equal(t, "1", string(parsed["a"]))
text = `{"key0": 1,"key0": 2}`
_, err = parseJSON([]byte(text))
require.Error(t, err)
text = `{"key0": 1,"key1": {"key2":2,"key2":"10"}}`
_, err = parseJSON([]byte(text))
require.NoError(t, err)
text = `{"keys.1": 1}`
_, err = parseJSON([]byte(text))
require.NoError(t, err)
text = `{"key0":: 1}`
_, err = parseJSON([]byte(text))
require.Error(t, err)
text = `{"key0":: "1"}`
_, err = parseJSON([]byte(text))
require.Error(t, err)
text = `{"key0": 'algo'}`
_, err = parseJSON([]byte(text))
require.Error(t, err)
text = `{1: 1}`
_, err = parseJSON([]byte(text))
require.Error(t, err)
}
func TestParseFileEncoding(t *testing.T) {
partitiontest.PartitionTest(t)
t.Parallel()
// create utf-8, utf-16, and utf-32 encoded text and check which is supported by json
// it appears that json only supports utf-8 encoded json text
// utf-8
text := `{"key0": "algo"}`
_, err := parseJSON([]byte(text))
require.NoError(t, err)
// json fails to parse utf-16 encoded text
// utf-16LE
enc := unicode.UTF16(unicode.LittleEndian, unicode.IgnoreBOM).NewEncoder()
encoded, err := enc.String(text)
require.NoError(t, err)
_, err = parseJSON([]byte(encoded))
require.Error(t, err)
// utf-16BE
enc = unicode.UTF16(unicode.BigEndian, unicode.IgnoreBOM).NewEncoder()
encoded, err = enc.String(text)
require.NoError(t, err)
_, err = parseJSON([]byte(encoded))
require.Error(t, err)
// json fails to parse utf-32 encoded text
// utf-32LE
enc = utf32.UTF32(utf32.LittleEndian, utf32.IgnoreBOM).NewEncoder()
encoded, err = enc.String(text)
require.NoError(t, err)
_, err = parseJSON([]byte(encoded))
require.Error(t, err)
// utf-32BE
enc = utf32.UTF32(utf32.BigEndian, utf32.IgnoreBOM).NewEncoder()
encoded, err = enc.String(text)
require.NoError(t, err)
_, err = parseJSON([]byte(encoded))
require.Error(t, err)
}
func TestParseByteOrderMark(t *testing.T) {
partitiontest.PartitionTest(t)
t.Parallel()
// byte order mark is not allowed at the beginning of a JSON text,
// it is treated as an error
text := "\uFEFF{\"key0\": 1}"
_, err := parseJSON([]byte(text))
require.Error(t, err)
}
func TestParseControlChar(t *testing.T) {
partitiontest.PartitionTest(t)
t.Parallel()
// control chars (u0000 - u001F) must be escaped
for i := 0x0; i <= 0x1f; i++ {
text := fmt.Sprintf("{\"key0\":\"\\u%04X\"}", i)
_, err := parseJSON([]byte(text))
require.NoError(t, err)
}
}
func TestParseEscapeChar(t *testing.T) {
partitiontest.PartitionTest(t)
t.Parallel()
// escaped control char
text := "{\"key0\": \"\\u0000\"}"
_, err := parseJSON([]byte(text))
require.NoError(t, err)
// incomplete escaped chars
text = `{"key0": ["\u00A"]}`
_, err = parseJSON([]byte(text))
require.Error(t, err)
text = `{"key0": "\"}`
_, err = parseJSON([]byte(text))
require.Error(t, err)
text = `{"key0": """}`
_, err = parseJSON([]byte(text))
require.Error(t, err)
}
func TestParseEscapedInvalidChar(t *testing.T) {
partitiontest.PartitionTest(t)
t.Parallel()
// unicode escape sequence remains in string
// accepted surrogate pair
text := `{"key0": "\uD801\udc37"}`
msg, err := parseJSON([]byte(text))
require.NoError(t, err)
require.Equal(t, "\"\\uD801\\udc37\"", string(msg["key0"]))
// escaped invalid codepoints
text = `{"key0": "\uD800\uD800n"}`
msg, err = parseJSON([]byte(text))
require.NoError(t, err)
require.Equal(t, "\"\\uD800\\uD800n\"", string(msg["key0"]))
text = `{"key0": "\uD800\uD800n"}`
msg, err = parseJSON([]byte(text))
require.NoError(t, err)
require.Equal(t, "\"\\uD800\\uD800n\"", string(msg["key0"]))
}
func TestParseRawNonUnicodeChar(t *testing.T) {
partitiontest.PartitionTest(t)
t.Parallel()
text := `{"key0": "πζθ"}`
_, err := parseJSON([]byte(text))
require.NoError(t, err)
text = `{"key0": "\uFF"}`
_, err = parseJSON([]byte(text))
require.Error(t, err)
text = `{"key0": FF}`
_, err = parseJSON([]byte(text))
require.Error(t, err)
}
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