55 lines
1.2 KiB
Go
55 lines
1.2 KiB
Go
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package auth
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import (
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"errors"
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"github.com/golang-jwt/jwt"
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"time"
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)
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//TODO: this key should be dynamically generated/taken from config file.
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var jwtKey = []byte("supersecretkey")
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//TODO: this should match the ID and username for the user.
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type JWTClaim struct {
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Username string `json:"username"`
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Email string `json:"email"`
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jwt.StandardClaims
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}
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func GenerateJWT(username string) (tokenString string, err error) {
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expirationTime := time.Now().Add(2 * time.Hour)
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claims := &JWTClaim{
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Username: username,
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Email: username,
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StandardClaims: jwt.StandardClaims{
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ExpiresAt: expirationTime.Unix(),
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},
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}
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
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tokenString, err = token.SignedString(jwtKey)
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return
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}
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func ValidateToken(signedToken string) (err error) {
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token, err := jwt.ParseWithClaims(
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signedToken,
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&JWTClaim{},
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func(token *jwt.Token) (interface{}, error) {
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return []byte(jwtKey), nil
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},
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)
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if err != nil {
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return
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}
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claims, ok := token.Claims.(*JWTClaim)
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if !ok {
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err = errors.New("couldn't parse claims")
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return
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}
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if claims.ExpiresAt < time.Now().Local().Unix() {
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err = errors.New("token expired")
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return
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}
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return
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}
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