57 lines
1.3 KiB
Go
57 lines
1.3 KiB
Go
package main
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import (
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"fmt"
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"strconv"
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"time"
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"github.com/golang-jwt/jwt/v5"
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)
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const tokenSecret = "tmp" // TODO delete in production
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const tokenExpiration = time.Hour
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func TokenCreate(userId uint32) (string, error) {
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now := time.Now()
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signedToken, err := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.RegisteredClaims{
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Subject: strconv.FormatUint(uint64(userId), 10),
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IssuedAt: jwt.NewNumericDate(now),
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ExpiresAt: jwt.NewNumericDate(now.Add(tokenExpiration)),
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}).SignedString([]byte(tokenSecret))
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return signedToken, err
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}
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func TokenValidateGetId(tokenString string) (uint32, error) {
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token, err := jwt.Parse(tokenString, func(t *jwt.Token) (interface{}, error) {
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if _, ok := t.Method.(*jwt.SigningMethodHMAC); !ok {
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return nil, fmt.Errorf("unexpected signing method: %v", t.Header["alg"])
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}
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return []byte(tokenSecret), nil
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})
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if err != nil {
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return 0, err
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}
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claims, ok := token.Claims.(jwt.MapClaims)
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if !ok || !token.Valid {
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return 0, fmt.Errorf("invalid token")
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}
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exp, ok := claims["exp"].(float64)
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if !ok || time.Now().Unix() > int64(exp) {
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return 0, fmt.Errorf("token expired")
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}
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sub, ok := claims["sub"].(string)
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if !ok {
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return 0, fmt.Errorf("invalid subject claim")
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}
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id, err := strconv.ParseUint(sub, 10, 32)
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if err != nil {
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return 0, fmt.Errorf("invalid subject claim")
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}
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return uint32(id), nil
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}
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