Introduce branding-resources site and brand Element welcome/auth page

config/hosts/public-web-static/virtualHosts/branding-resources.hamburg.ccc.de.nix

@@ -0,0 +1,56 @@
+{ pkgs, ... }:
+
+let
+  ccchhBrandingResources = pkgs.fetchgit {
+    url = "https://gitlab.hamburg.ccc.de/ccchh/ccchh-branding.git";
+    rev = "232dfa89ede1414db58576a491021e15c16a5133";
+    hash = "sha256-qhNcvkRpLJmFg8yQYUJ6rV0HdTRDcl5Cp/lJ/tL2Q4w=";
+  };
+in
+{
+  services.nginx.virtualHosts = {
+    "acme-branding-resources.hamburg.ccc.de" = {
+      enableACME = true;
+      serverName = "branding-resources.hamburg.ccc.de";
+
+      listen = [
+        {
+          addr = "0.0.0.0";
+          port = 31820;
+        }
+      ];
+    };
+
+    "branding-resources.hamburg.ccc.de" = {
+      forceSSL = true;
+      useACMEHost = "branding-resources.hamburg.ccc.de";
+
+      listen = [
+        {
+          addr = "0.0.0.0";
+          port = 8443;
+          ssl = true;
+          extraParameters = [ "proxy_protocol" ];
+        }
+      ];
+
+      root = pkgs.buildEnv {
+        name = "ccchh-branding-resources";
+        paths = [
+          ccchhBrandingResources
+        ];
+      };
+
+      extraConfig = ''
+        # Make use of the ngx_http_realip_module to set the $remote_addr and
+        # $remote_port to the client address and client port, when using proxy
+        # protocol.
+        # First set our proxy protocol proxy as trusted.
+        set_real_ip_from 172.31.17.140;
+        # Then tell the realip_module to get the addreses from the proxy protocol
+        # header.
+        real_ip_header proxy_protocol;
+      '';
+    };
+  };
+}

config/hosts/public-web-static/virtualHosts/default.nix

@@ -2,6 +2,7 @@
 
 {
   imports = [
+    ./branding-resources.hamburg.ccc.de.nix
     ./element.hamburg.ccc.de.nix
   ];
 }

config/hosts/public-web-static/virtualHosts/element-web-config/config.json

@@ -43,5 +43,14 @@
     },
     "jitsi": {
         "preferredDomain": "meet.element.io"
+    },
+    "branding": {
+        "welcome_background_url": "https://branding-resources.hamburg.ccc.de/background/blur-more-blur-edit.jpg",
+        "auth_header_logo_url": "https://branding-resources.hamburg.ccc.de/logo/ccchh-logo-no-background.png",
+        "auth_footer_links": [
+            { "text": "Website", "url": "https://hamburg.ccc.de/" },
+            { "text": "Wiki", "url": "https://wiki.ccchh.net/" },
+            { "text": "Status", "url": "https://status.ccchh.net/status/main" }
+        ]
     }
 }

config/hosts/public-web-static/virtualHosts/element.hamburg.ccc.de.nix

@@ -19,7 +19,6 @@ in
 {
   services.nginx.virtualHosts = {
     "acme-element.hamburg.ccc.de" = {
-      default = true;
       enableACME = true;
       serverName = "element.hamburg.ccc.de";
 
@@ -32,7 +31,6 @@ in
     };
 
     "element.hamburg.ccc.de" = {
-      default = true;
       forceSSL = true;
       useACMEHost = "element.hamburg.ccc.de";