89 lines
1.8 KiB
Go
89 lines
1.8 KiB
Go
package utils
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import (
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"fmt"
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"net/http"
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"strings"
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"time"
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"github.com/golang-jwt/jwt/v4"
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"github.com/mitchellh/mapstructure"
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)
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func GetTokenFromHeader(r *http.Request) (string, error) {
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authHeader := r.Header.Get("Authorization")
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if authHeader == "" {
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return "", fmt.Errorf("there is no authorization header provided")
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}
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authSlice := strings.Split(authHeader, " ")
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if len(authSlice) != 2 {
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return "", fmt.Errorf("wrong access token or header format")
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}
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return strings.TrimSpace(authSlice[1]), nil
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}
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func GetTokenFromCookie(r *http.Request) (string, error) {
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cookie, err := r.Cookie("access_token")
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if err != nil {
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return "", fmt.Errorf("there is no authorization cookie provided")
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}
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return strings.TrimSpace(cookie.Value), nil
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}
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func GetUserFromToken[T any](tokenString string, secret string) (*T, error) {
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token, err := jwt.Parse(tokenString, func(t *jwt.Token) (any, error) {
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if _, ok := t.Method.(*jwt.SigningMethodHMAC); !ok {
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return nil, fmt.Errorf("wrong token format ")
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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 !token.Valid {
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return nil, fmt.Errorf("token is not valid")
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}
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var user *T
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claims := token.Claims.(jwt.MapClaims)
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if err := mapstructure.Decode(claims["data"], &user); err != nil {
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return nil, fmt.Errorf("error while decoding payload claim")
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}
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return user, nil
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}
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func CreateToken(sub, secret, expiry string, payload any) (*string, error) {
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duration, err := time.ParseDuration(expiry)
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if err != nil {
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return nil, err
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}
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token := jwt.New(jwt.SigningMethodHS256)
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claims := token.Claims.(jwt.MapClaims)
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claims["sub"] = sub
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claims["exp"] = time.Now().Add(duration).Unix()
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claims["data"] = payload
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signedToken, err := token.SignedString([]byte(secret))
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if err != nil {
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return nil, err
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}
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return &signedToken, nil
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}
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