From ac45aec044f9f567ed59e57e3521465e9b9e57e1 Mon Sep 17 00:00:00 2001
From: Trong Huu Nguyen <trong.huu.nguyen@nav.no>
Date: Thu, 21 Jul 2022 17:44:13 +0200
Subject: [PATCH] fix(autologin): filter out empty and duplicate patterns

---
 pkg/autologin/autologin.go | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/pkg/autologin/autologin.go b/pkg/autologin/autologin.go
index d807c27..c84c269 100644
--- a/pkg/autologin/autologin.go
+++ b/pkg/autologin/autologin.go
@@ -34,8 +34,22 @@ func (o *Options) NeedsLogin(r *http.Request, isAuthenticated bool) bool {
 }
 
 func NewOptions(cfg *config.Config) (*Options, error) {
+	seen := make(map[string]bool)
+	patterns := make([]string, 0)
+
+	for _, path := range cfg.AutoLoginIgnorePaths {
+		if len(path) == 0 {
+			continue
+		}
+
+		if _, found := seen[path]; !found {
+			seen[path] = true
+			patterns = append(patterns, path)
+		}
+	}
+
 	return &Options{
 		Enabled:        cfg.AutoLogin,
-		IgnorePatterns: cfg.AutoLoginIgnorePaths,
+		IgnorePatterns: patterns,
 	}, nil
 }