64 lines
1.4 KiB
Go
64 lines
1.4 KiB
Go
package jwt
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import (
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"errors"
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"strings"
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"time"
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"github.com/golang-jwt/jwt/v5"
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"github.com/spf13/viper"
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)
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type JWT struct {
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key []byte
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}
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type MyCustomClaims struct {
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UserId uint
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jwt.RegisteredClaims
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}
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func NewJwt(conf *viper.Viper) *JWT {
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return &JWT{key: []byte(conf.GetString("security.jwt.key"))}
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}
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func (j *JWT) GenToken(userId uint, expiresAt time.Time) (string, error) {
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, MyCustomClaims{
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UserId: userId,
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RegisteredClaims: jwt.RegisteredClaims{
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ExpiresAt: jwt.NewNumericDate(expiresAt),
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IssuedAt: jwt.NewNumericDate(time.Now()),
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NotBefore: jwt.NewNumericDate(time.Now()),
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Issuer: "",
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Subject: "",
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ID: "",
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Audience: []string{},
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},
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})
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// Sign and get the complete encoded token as a string using the key
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tokenString, err := token.SignedString(j.key)
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if err != nil {
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return "", err
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}
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return tokenString, nil
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}
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func (j *JWT) ParseToken(tokenString string) (*MyCustomClaims, error) {
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tokenString = strings.TrimPrefix(tokenString, "Bearer ")
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if strings.TrimSpace(tokenString) == "" {
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return nil, errors.New("token is empty")
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}
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token, err := jwt.ParseWithClaims(tokenString, &MyCustomClaims{}, func(token *jwt.Token) (interface{}, error) {
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return j.key, nil
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})
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if err != nil {
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return nil, err
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}
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if claims, ok := token.Claims.(*MyCustomClaims); ok && token.Valid {
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return claims, nil
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} else {
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return nil, err
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}
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}
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