87 lines
2 KiB
Go
87 lines
2 KiB
Go
// Copyright 2016 The Gogs Authors. All rights reserved.
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// Copyright 2016 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package generate
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import (
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"crypto/rand"
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"encoding/base64"
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"io"
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"math/big"
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"time"
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"github.com/dgrijalva/jwt-go"
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)
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// GetRandomString generate random string by specify chars.
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func GetRandomString(n int) (string, error) {
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const alphanum = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
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buffer := make([]byte, n)
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max := big.NewInt(int64(len(alphanum)))
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for i := 0; i < n; i++ {
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index, err := randomInt(max)
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if err != nil {
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return "", err
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}
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buffer[i] = alphanum[index]
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}
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return string(buffer), nil
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}
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// NewInternalToken generate a new value intended to be used by INTERNAL_TOKEN.
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func NewInternalToken() (string, error) {
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secretBytes := make([]byte, 32)
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_, err := io.ReadFull(rand.Reader, secretBytes)
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if err != nil {
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return "", err
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}
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secretKey := base64.RawURLEncoding.EncodeToString(secretBytes)
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now := time.Now()
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var internalToken string
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internalToken, err = jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims{
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"nbf": now.Unix(),
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}).SignedString([]byte(secretKey))
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if err != nil {
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return "", err
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}
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return internalToken, nil
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}
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// NewJwtSecret generate a new value intended to be used by LFS_JWT_SECRET.
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func NewJwtSecret() (string, error) {
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JWTSecretBytes := make([]byte, 32)
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_, err := io.ReadFull(rand.Reader, JWTSecretBytes)
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if err != nil {
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return "", err
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}
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return base64.RawURLEncoding.EncodeToString(JWTSecretBytes), nil
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}
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// NewSecretKey generate a new value intended to be used by SECRET_KEY.
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func NewSecretKey() (string, error) {
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secretKey, err := GetRandomString(64)
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if err != nil {
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return "", err
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}
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return secretKey, nil
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}
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func randomInt(max *big.Int) (int, error) {
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rand, err := rand.Int(rand.Reader, max)
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if err != nil {
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return 0, err
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}
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return int(rand.Int64()), nil
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}
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