refactor: remove redundant code

utils/utils.go

@@ -1,66 +1,17 @@
 package utils
 
 import (
-	"crypto/aes"
-	"crypto/cipher"
-	"crypto/des"
-	"encoding/asn1"
 	"fmt"
-	"hack-browser-data/log"
 	"io/ioutil"
 	"os"
 	"path"
 	"path/filepath"
 	"strings"
 	"time"
+
+	"hack-browser-data/log"
 )
 
-type DecryptError struct {
-	err error
-	msg string
-}
-
-func (e *DecryptError) Error() string {
-	return fmt.Sprintf("%s: %s", e.msg, e.err)
-}
-
-func (e *DecryptError) Unwrap() error {
-	return e.err
-}
-
-type Browser struct {
-	Name    string
-	DataDir string
-}
-
-const (
-	LoginData        = "Login Data"
-	History          = "History"
-	Cookies          = "Cookies"
-	Bookmarks        = "Bookmarks"
-	FirefoxCookie    = "cookies.sqlite"
-	FirefoxKey4DB    = "key4.db"
-	FirefoxLoginData = "logins.json"
-	FirefoxData      = "places.sqlite"
-	FirefoxKey3DB    = "key3.db"
-)
-
-
-func GetDBPath(dir string, dbName ...string) (dbFile []string) {
-	for _, v := range dbName {
-		s, err := filepath.Glob(dir + v)
-		if err != nil && len(s) == 0 {
-			continue
-		}
-		if len(s) > 0 {
-			log.Debugf("Find %s File Success", v)
-			log.Debugf("%s file location is %s", v, s[0])
-			dbFile = append(dbFile, s[0])
-		}
-	}
-	return dbFile
-}
-
 func CopyDB(src, dst string) error {
 	locals, _ := filepath.Glob("*")
 	for _, v := range locals {
@@ -117,16 +68,6 @@ func TimeEpochFormat(epoch int64) time.Time {
 	return t
 }
 
-// check time our range[1.9999]
-func checkTimeRange(check time.Time) time.Time {
-	end, _ := time.Parse(time.RFC3339, "9000-01-02T15:04:05Z07:00")
-	if check.Before(end) {
-		return check
-	} else {
-		return end
-	}
-}
-
 func ReadFile(filename string) (string, error) {
 	s, err := ioutil.ReadFile(filename)
 	return string(s), err
@@ -152,74 +93,3 @@ func MakeDir(dirName string) {
 		err = os.Mkdir(dirName, 0700)
 	}
 }
-
-func PaddingZero(s []byte, l int) []byte {
-	h := l - len(s)
-	if h <= 0 {
-		return s
-	} else {
-		for i := len(s); i < l; i++ {
-			s = append(s, 0)
-		}
-		return s
-	}
-}
-
-func PKCS5UnPadding(src []byte) []byte {
-	length := len(src)
-	unpadding := int(src[length-1])
-	return src[:(length - unpadding)]
-}
-
-func Des3Decrypt(key, iv []byte, src []byte) ([]byte, error) {
-	block, err := des.NewTripleDESCipher(key)
-	if err != nil {
-		log.Error(err)
-		return nil, err
-	}
-	blockMode := cipher.NewCBCDecrypter(block, iv)
-	sq := make([]byte, len(src))
-	blockMode.CryptBlocks(sq, src)
-	return sq, nil
-}
-
-/*
-SEQUENCE (3 elem)
-	OCTET STRING (16 byte)
-	SEQUENCE (2 elem)
-		OBJECT IDENTIFIER 1.2.840.113549.3.7 des-EDE3-CBC (RSADSI encryptionAlgorithm)
-		OCTET STRING (8 byte)
-	OCTET STRING (16 byte)
-*/
-type LoginPBE struct {
-	CipherText []byte
-	SequenceLogin
-	Encrypted []byte
-}
-
-type SequenceLogin struct {
-	asn1.ObjectIdentifier
-	Iv []byte
-}
-
-func DecodeLogin(decodeItem []byte) (pbe LoginPBE, err error) {
-	_, err = asn1.Unmarshal(decodeItem, &pbe)
-	if err != nil {
-		log.Error(err)
-		return
-	}
-	return pbe, nil
-}
-
-func aes128CBCDecrypt(key, iv, encryptPass []byte) ([]byte, error) {
-
-	block, err := aes.NewCipher(key)
-	if err != nil {
-		return []byte{}, err
-	}
-	dst := make([]byte, len(encryptPass))
-	mode := cipher.NewCBCDecrypter(block, iv)
-	mode.CryptBlocks(dst, encryptPass)
-	dst = PKCS5UnPadding(dst)
-	return dst, nil
-}