78 lines
1.8 KiB
Go
78 lines
1.8 KiB
Go
package auth
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import (
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"errors"
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"opencatd-open/internal/model"
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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 int64 `json:"user_id"`
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Name string `json:"name"`
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Type string `json:"type"`
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jwt.RegisteredClaims
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}
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type TokenPair struct {
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AccessToken string `json:"access_token"`
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RefreshToken string `json:"refresh_token,omitempty"`
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}
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func GenerateTokenPair(user *model.User, secret string, accessExpire, refreshExpire time.Duration) (*TokenPair, error) {
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// Generate access token
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accessToken, err := generateToken(user, "access", secret, accessExpire)
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if err != nil {
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return nil, err
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}
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// Generate refresh token
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refreshToken, err := generateToken(user, "refresh", secret, refreshExpire)
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if err != nil {
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return nil, err
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}
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return &TokenPair{
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AccessToken: accessToken,
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RefreshToken: refreshToken,
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}, nil
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}
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func generateToken(user *model.User, tokenType, secret string, expire time.Duration) (string, error) {
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now := time.Now()
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claims := Claims{
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UserID: user.ID,
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Name: user.Username,
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Type: tokenType,
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RegisteredClaims: jwt.RegisteredClaims{
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ExpiresAt: jwt.NewNumericDate(now.Add(expire)),
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IssuedAt: jwt.NewNumericDate(now),
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NotBefore: jwt.NewNumericDate(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([]byte(secret))
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}
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func ValidateToken(tokenString, secret string) (*Claims, error) {
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token, err := jwt.ParseWithClaims(tokenString, &Claims{}, func(token *jwt.Token) (interface{}, error) {
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if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
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return nil, errors.New("unexpected signing method")
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}
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return []byte(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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if claims, ok := token.Claims.(*Claims); ok && token.Valid {
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return claims, nil
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}
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return nil, jwt.ErrInvalidKey
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}
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