feat: login wall (#42)

* feat: add login-wall app

* fix: rename vars

* fix: rename vars

* update docker file

* add validations for app state

* add host check for app

* fix: docker file

server/utils/validator.go

@@ -1,8 +1,31 @@
 package utils
 
-import "net/mail"
+import (
+	"net/mail"
+	"strings"
+
+	"github.com/authorizerdev/authorizer/server/constants"
+)
 
 func IsValidEmail(email string) bool {
 	_, err := mail.ParseAddress(email)
 	return err == nil
 }
+
+func IsValidRedirectURL(url string) bool {
+	if len(constants.ALLOWED_ORIGINS) == 1 && constants.ALLOWED_ORIGINS[0] == "*" {
+		return true
+	}
+
+	hasValidURL := false
+	urlDomain := GetDomainName(url)
+
+	for _, val := range constants.ALLOWED_ORIGINS {
+		if strings.Contains(val, urlDomain) {
+			hasValidURL = true
+			break
+		}
+	}
+
+	return hasValidURL
+}