Extract login functions to login.go

login.go

@@ -0,0 +1,47 @@
+package main
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/dgrijalva/jwt-go"
+	"gopkg.in/gin-gonic/gin.v1"
+)
+
+func verifyLogin(c *gin.Context) bool {
+	tokenString, err := c.Cookie("authentication")
+	if err != nil {
+		return false
+	}
+
+	token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
+		if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
+			return nil, fmt.Errorf("Unexpected signing method: %v", token.Header["alg"])
+		}
+		return []byte(secret), nil
+	})
+
+	if !verifyToken(c, token, err) {
+		c.SetCookie("authentication", "", -1, "", "", false, false)
+		return false
+	}
+
+	return true
+}
+
+func verifyToken(c *gin.Context, token *jwt.Token, err error) bool {
+	if err != nil {
+		return false
+	}
+
+	claims, ok := token.Claims.(jwt.MapClaims)
+	if !ok || !token.Valid {
+		return false
+	}
+
+	if !claims.VerifyExpiresAt(time.Now().Unix(), true) {
+		return false
+	}
+
+	return true
+}

main.go

@@ -1,7 +1,6 @@
 package main
 
 import (
-	"fmt"
 	"net/http"
 	"time"
 
@@ -66,44 +65,6 @@ func login(c *gin.Context) {
 	c.HTML(http.StatusOK, "login.html", nil)
 }
 
-func verifyLogin(c *gin.Context) bool {
-	tokenString, err := c.Cookie("authentication")
-	if err != nil {
-		return false
-	}
-
-	token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
-		if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
-			return nil, fmt.Errorf("Unexpected signing method: %v", token.Header["alg"])
-		}
-		return []byte(secret), nil
-	})
-
-	if !verifyToken(token, err) {
-		c.SetCookie("authentication", "", -1, "", "", false, false)
-		return false
-	}
-
-	return true
-}
-
-func verifyToken(c *gin.Context, token jwt.Token, err error) bool {
-	if err != nil {
-		return false
-	}
-
-	claims, ok := token.Claims.(jwt.MapClaims)
-	if !ok || !token.Valid {
-		return false
-	}
-
-	if !claims.VerifyExpiresAt(time.Now().Unix(), true) {
-		return false
-	}
-
-	return true
-}
-
 func loginPost(c *gin.Context) {
 	username, _ := c.GetPostForm("username")
 	password, _ := c.GetPostForm("password")
@@ -132,6 +93,6 @@ func loginPost(c *gin.Context) {
 	c.JSON(http.StatusOK, map[string]string{
 		"token": t,
 	})
-	return
 
+	return
 }