fix: redirect to root domain for 404's

hosts/cube/grafana/default.nix

@@ -69,6 +69,13 @@ in {
   };
 
   services.nginx.virtualHosts.${fqdn} = merge config.services.nginx.sslTemplate {
+    extraConfig = /* nginx */ ''
+      # Grafana sets `nosniff` while not setting the content type properly,
+      # so everything breaks with it. Unset the header.
+      ${config.services.nginx.headers}
+      add_header X-Content-Type-Options "" always;
+    '';
+
     locations."/" = {
       proxyPass       = "http://[::1]:${toString port}";
       proxyWebsockets = true;

hosts/cube/matrix/default.nix

@@ -2,8 +2,6 @@
   inherit (config.networking) domain;
   inherit (lib) const enabled genAttrs merge strings;
 
-  pathSite = "/var/www/site";
-
   fqdn = "chat.${domain}";
   port = 8002;
 
@@ -24,24 +22,6 @@
       "m.server" = "${fqdn}:443";
     };
   };
-
-  configNotFoundLocation = {
-    extraConfig = /* nginx */ ''
-      error_page 404 /404.html;
-    '';
-
-    locations."/".extraConfig = /* nginx */ ''
-      return 404;
-    '';
-
-    locations."/404".extraConfig = /* nginx */ ''
-      internal;
-    '';
-
-    locations."/assets/".extraConfig = /* nginx */ ''
-      return 301 https://${domain}$request_uri;
-    '';
-  };
 in {
   imports = [(self + /modules/nginx.nix)];
 
@@ -103,8 +83,8 @@ in {
 
   services.nginx.virtualHosts.${domain} = configWellKnownResponse;
 
-  services.nginx.virtualHosts.${fqdn} = merge config.services.nginx.sslTemplate configWellKnownResponse configNotFoundLocation {
+  services.nginx.virtualHosts.${fqdn} = merge config.services.nginx.sslTemplate configWellKnownResponse {
-    root = pathSite;
+    locations."/".return = "301 https://${domain}/404";
 
     locations."/_matrix".proxyPass         = "http://[::1]:${toString port}";
     locations."/_synapse/client".proxyPass = "http://[::1]:${toString port}";

modules/site.nix

@@ -2,54 +2,31 @@
   inherit (config.networking) domain;
   inherit (lib) enabled merge;
 
-  pathSite = "/var/www/site";
+  root = "/var/www/site";
-
-  configNotFoundLocation = {
-    extraConfig = /* nginx */ ''
-      error_page 404 /404.html;
-    '';
-
-    locations."/404".extraConfig = /* nginx */ ''
-      internal;
-    '';
-  };
 in {
   imports = [(self + /modules/nginx.nix)];
 
   services.nginx = enabled {
-    virtualHosts.${domain} = merge config.services.nginx.sslTemplate configNotFoundLocation {
+    virtualHosts.${domain} = merge config.services.nginx.sslTemplate {
-      root = pathSite;
+      inherit root;
 
       locations."/".tryFiles = "$uri $uri.html $uri/index.html =404";
 
-      locations."/assets/".extraConfig = /* nginx */ ''
+      extraConfig = /* nginx */ ''
-        if ($request_method = OPTIONS) {
+        error_page 404 /404.html;
-          ${config.services.nginx.headers}
+      '';
-          add_header Content-Type text/plain always;
-          add_header Content-Length 0 always;
-          return 204;
-        }
 
-        expires 24h;
+      locations."/404".extraConfig = /* nginx */ ''
+        internal;
       '';
     };
 
     virtualHosts."www.${domain}" = merge config.services.nginx.sslTemplate {
-      locations."/".extraConfig = /* nginx */ ''
+      locations."/".return = "301 https://${domain}$request_uri";
-        return 301 https://${domain}$request_uri;
-      '';
     };
 
-    virtualHosts._ = merge config.services.nginx.sslTemplate configNotFoundLocation {
+    virtualHosts._ = merge config.services.nginx.sslTemplate {
-      root = pathSite;
+      locations."/".return = "301 https://${domain}/404";
-
-      locations."/".extraConfig = /* nginx */ ''
-        return 404;
-      '';
-
-      locations."/assets/".extraConfig = /* nginx */ ''
-        return 301 https://${domain}$request_uri;
-      '';
     };
   };
 }