90 lines
2.1 KiB
Go
90 lines
2.1 KiB
Go
package auth
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import (
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"errors"
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"time"
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"github.com/golang-jwt/jwt/v5"
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)
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type Claims struct {
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UserID string `json:"user_id"`
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Role string `json:"role"`
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jwt.RegisteredClaims
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}
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type PurposeClaims struct {
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UserID string `json:"user_id"`
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Purpose string `json:"purpose"`
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jwt.RegisteredClaims
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}
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func GenerateJWT(userID, role string, secret []byte) (string, error) {
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claims := Claims{
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UserID: userID,
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Role: role,
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RegisteredClaims: jwt.RegisteredClaims{
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ExpiresAt: jwt.NewNumericDate(time.Now().Add(15 * time.Minute)),
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IssuedAt: jwt.NewNumericDate(time.Now()),
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},
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}
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
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return token.SignedString(secret)
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}
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func GeneratePurposeJWT(userID, purpose string, secret []byte, ttl time.Duration) (string, error) {
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claims := PurposeClaims{
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UserID: userID,
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Purpose: purpose,
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RegisteredClaims: jwt.RegisteredClaims{
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ExpiresAt: jwt.NewNumericDate(time.Now().Add(ttl)),
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IssuedAt: jwt.NewNumericDate(time.Now()),
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},
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}
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
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return token.SignedString(secret)
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}
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func ValidateJWT(tokenStr string, secret []byte) (*Claims, error) {
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token, err := jwt.ParseWithClaims(tokenStr, &Claims{}, func(token *jwt.Token) (interface{}, error) {
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if token.Method != jwt.SigningMethodHS256 {
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return nil, errors.New("unexpected signing method")
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}
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return secret, 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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claims, ok := token.Claims.(*Claims)
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if !ok || !token.Valid {
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return nil, errors.New("invalid token")
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}
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return claims, nil
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}
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func ValidatePurposeJWT(tokenStr, expectedPurpose string, secret []byte) (*PurposeClaims, error) {
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token, err := jwt.ParseWithClaims(tokenStr, &PurposeClaims{}, func(token *jwt.Token) (interface{}, error) {
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if token.Method != jwt.SigningMethodHS256 {
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return nil, errors.New("unexpected signing method")
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}
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return secret, 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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claims, ok := token.Claims.(*PurposeClaims)
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if !ok || !token.Valid {
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return nil, errors.New("invalid token")
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}
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if claims.Purpose != expectedPurpose {
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return nil, errors.New("invalid token purpose")
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}
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return claims, nil
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}
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