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main.go
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main.go
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package main
import (
"bytes"
"encoding/json"
"flag"
"io"
"log"
"os"
"github.com/syndtr/goleveldb/leveldb"
"github.com/syndtr/goleveldb/leveldb/opt"
"golang.org/x/text/encoding/unicode"
"golang.org/x/text/transform"
)
var (
inputPath string
outputPath string
)
const (
chromeExtensionLevelDBKey = "_chrome-extension://chphlpgkkbolifaimnlloiipkdnihall\x00\x01state"
)
func init() {
const (
defaultInputPath = ""
inputPathUsage = "LevelDB database path"
defaultOutputPath = "-"
outputPathUsage = "Output file path (\"-\" to print to standard output)"
)
flag.StringVar(&inputPath, "input", defaultInputPath, inputPathUsage)
flag.StringVar(&inputPath, "i", defaultInputPath, inputPathUsage+" (shorthand)")
flag.StringVar(&outputPath, "output", defaultOutputPath, outputPathUsage)
flag.StringVar(&outputPath, "o", defaultOutputPath, outputPathUsage)
}
func main() {
flag.Parse()
if inputPath == "" {
flag.PrintDefaults()
os.Exit(1)
}
db, err := leveldb.OpenFile(inputPath, &opt.Options{
ReadOnly: true,
})
if err != nil {
log.Print(err)
os.Exit(1)
}
defer db.Close()
rawData, err := db.Get([]byte(chromeExtensionLevelDBKey), nil)
if err != nil {
log.Print(err)
os.Exit(1)
}
t := unicode.UTF16(unicode.LittleEndian, unicode.IgnoreBOM).NewDecoder()
r := transform.NewReader(bytes.NewReader(rawData[1:]), t)
var data interface{}
dec := json.NewDecoder(r)
err = dec.Decode(&data)
if err != nil {
log.Print(err)
os.Exit(1)
}
var w io.Writer
if outputPath == "-" {
w = os.Stdout
} else {
f, err := os.Create(outputPath)
if err != nil {
log.Print(err)
os.Exit(1)
}
defer f.Close()
w = f
}
enc := json.NewEncoder(w)
enc.SetIndent("", " ")
enc.Encode(data)
}