From 769f5f9cfad24cd5368fb14aeb99f55f474e904d Mon Sep 17 00:00:00 2001
From: Alexandre Aubin <alex.aubin@mailoo.org>
Date: Fri, 29 Sep 2023 14:31:30 +0200
Subject: [PATCH] access.lua: add special 'default' key in 'domain_portal_urls'
 to handle case where we reach an unmanaged domain

---
 access.lua | 20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

diff --git a/access.lua b/access.lua
index e048ea2..cff4cde 100644
--- a/access.lua
+++ b/access.lua
@@ -325,12 +325,22 @@ else
 
     portal_domain = conf["domain_portal_urls"][ngx.var.host]
     if portal_domain == nil then
-        logger:debug("Domain " .. ngx.var.host .. " is not configured for SSOWat")
-        ngx.status = 400
-        ngx.header.content_type = "plain/text"
-        ngx.say("Unmanaged domain: " .. ngx.var.host)
-        return
+        logger:debug("Domain " .. ngx.var.host .. " is not configured for SSOWat, falling back to default")
+        portal_domain = conf["domain_portal_urls"]["default"]
+        if portal_domain ~= nil then
+	    if string.starts(portal_domain, '/') then
+	        portal_domain = ngx.var.host .. portal_domain
+	    end
+	    return ngx.redirect("https://" .. portal_domain)
+	end
     end
+    if portal_domain == nil then
+	ngx.header['Content-Type'] = "text/html"
+	ngx.status = 400
+	ngx.say("Unmanaged domain")
+	return ngx.exit(200)
+    end
+
     portal_url = "https://" .. portal_domain
     logger:debug("Redirecting to portal : " .. portal_url)