Code cleanup

Signed-off-by: Yuan Si <do4suki@gmail.com>

utils/utils.go

@@ -4,13 +4,9 @@
 package utils
 
 import (
-	"encoding/base64"
 	"encoding/hex"
-	"errors"
 	"math/rand"
-	"net/url"
 	"os"
-	"strconv"
 	"time"
 )
 
@@ -52,59 +48,3 @@ func RandomStr(len int) string {
 
 	return mRandStr
 }
-
-func RandomBase64Token(len int) string {
-	rand.NewSource(time.Now().UnixNano())
-	mRand := make([]byte, len)
-	rand.Read(mRand)
-	mRandStr := hex.EncodeToString(mRand)[0:len]
-
-	return base64.RawStdEncoding.EncodeToString([]byte(mRandStr))
-}
-
-func ParseAuthorizeStr(authorize []string) (url.Values, error) {
-	if len(authorize) == 0 {
-		return nil, errors.New("authorize is null")
-	}
-	urlParams, err := url.ParseQuery(authorize[0])
-	if err != nil {
-		return nil, err
-	}
-
-	return urlParams, nil
-}
-
-func GetAuthorizeToken(authorize []string) (string, error) {
-	params, err := ParseAuthorizeStr(authorize)
-	if err != nil {
-		return "", err
-	}
-	token := params["token"]
-	if len(token) == 0 {
-		return "", errors.New("token is null")
-	}
-
-	return token[0], nil
-}
-
-func GetAuthorizeNonce(authorize []string) (int, error) {
-	params, err := ParseAuthorizeStr(authorize)
-	if err != nil {
-		return 0, err
-	}
-	nonce := params["nonce"]
-	if len(nonce) == 0 {
-		return 0, errors.New("nonce is null")
-	}
-
-	n_nonce, err := strconv.Atoi(nonce[0])
-	if err != nil {
-		return 0, err
-	}
-
-	if n_nonce == 0 {
-		return 0, errors.New("nonce is 0")
-	}
-
-	return n_nonce, nil
-}