/
claims.go
74 lines (61 loc) · 1.79 KB
/
claims.go
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package services
import (
"github.com/dgrijalva/jwt-go"
"github.com/pkg/errors"
)
type Claims struct {
cs *Clients
}
type StandardClaims struct {
Grace int `json:"grace"`
Preset string `json:"preset"`
Rate string `json:"rate"`
Role string `json:"role"`
jwt.StandardClaims
}
func NewClaims(cs *Clients) *Claims {
return &Claims{cs: cs}
}
func (s *Claims) Set(apiKey string, claims jwt.Claims) (string, error) {
if s.cs.Empty() {
return "", nil
}
cl := s.cs.Get(apiKey)
if cl == nil {
return "", errors.Errorf("failed to find secret by API key %v", apiKey)
}
token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
tokenString, err := token.SignedString([]byte(cl.Secret))
if err != nil {
return "", errors.Wrapf(err, "auth token generation failed")
}
return tokenString, nil
}
func (s *Claims) Get(tokenString string, apiKey string) (jwt.MapClaims, *Client, error) {
if s.cs.Empty() {
return jwt.MapClaims{}, nil, nil
}
if tokenString == "" {
return nil, nil, errors.Errorf("failed to get token")
}
cl := s.cs.Get(apiKey)
if cl == nil {
return nil, nil, errors.Errorf("failed to find secret by API key %v", apiKey)
}
token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
// Don't forget to validate the alg is what you expect:
if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
return nil, errors.Errorf("Unexpected signing method=%v", token.Header["alg"])
}
// hmacSampleSecret is a []byte containing your secret, e.g. []byte("my_secret_key")
return []byte(cl.Secret), nil
})
if err != nil {
return nil, nil, errors.Wrapf(err, "failed to parse token")
}
claims, ok := token.Claims.(jwt.MapClaims)
if !ok || !token.Valid {
return nil, nil, errors.Wrapf(err, "failed to validate token")
}
return claims, cl, nil
}