1 files changed, 42 insertions, 0 deletions
diff --git a/token.go b/token.go
new file mode 100644
index 0000000..1031e7c
--- /dev/null
+++ b/token.go
@@ -0,0 +1,42 @@
+package portgate
+
+import (
+	"github.com/golang-jwt/jwt"
+	"github.com/valyala/fasthttp"
+	"time"
+)
+
+func CreateToken(config *Config, givenKey string) (string, error) {
+	// Our token will last 7 days
+	token := jwt.NewWithClaims(jwt.SigningMethodHS512, jwt.StandardClaims{
+		ExpiresAt: GetExpirationDateFrom(time.Now()).Unix(),
+		IssuedAt:  time.Now().Unix(),
+	})
+
+	return token.SignedString([]byte(config.jwtSecret))
+}
+
+func VerifyToken(config *Config, tokenString string) (bool, error) {
+	token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
+		return []byte(config.jwtSecret), nil
+	})
+
+	if err == nil && token.Valid {
+		return true, nil
+	} else {
+		return false, err
+	}
+}
+
+func VerifyTokenFromCookie(config *Config, ctx *fasthttp.RequestCtx) bool {
+	cookie := ctx.Request.Header.Cookie("_portgate_token")
+	if cookie != nil {
+		ok, _ := VerifyToken(config, string(cookie))
+		return ok
+	}
+	return false
+}
+
+func GetExpirationDateFrom(date time.Time) time.Time {
+	return date.AddDate(0, 0, 7)
+}