Initial commit

pkg/auth/jwt.go

@@ -0,0 +1,31 @@
+package auth
+
+import (
+	"crypto/rsa"
+	"encoding/json"
+
+	"github.com/golang-jwt/jwt"
+)
+
+// Auth struct represents parsed jwt information.
+type Auth struct {
+	UID        string          `json:"uid"`
+	State      string          `json:"state"`
+	Email      string          `json:"email"`
+	Role       string          `json:"role"`
+	ReferralID json.Number     `json:"referral_id"`
+	Level      json.Number     `json:"level"`
+	Audience   []string        `json:"aud,omitempty"`
+	jwt.StandardClaims
+}
+
+// ParseAndValidate parses token and validates RS256 signature with Barong RSA public key.
+func ParseAndValidate(token string, key *rsa.PublicKey) (Auth, error) {
+	auth := Auth{}
+
+	_, err := jwt.ParseWithClaims(token, &auth, func(t *jwt.Token) (interface{}, error) {
+		return key, nil
+	})
+
+	return auth, err
+}