3x-ui server mask

modules/server/nginx.nix

@@ -5,12 +5,44 @@
   xlib,
   ...
 }:
-# Standard reverse-proxy: HTTP/S termination upstream, backend on the LAN.
-# x.zeroq.su is the 3x-ui controller panel — see 3x-ui.nix for the
-# /subs/, /subsjs/, /clash/ routing logic.
+# SNI-fronted reverse proxy (vds/nginx.nix style): port 443 is owned by an
+# nginx stream block that reads the ClientHello SNI and forwards the raw
+# TLS stream. The HTTP vhosts no longer bind 443 — they listen on an
+# internal HTTPS listener (127.0.0.1:8443) that the stream forwards onto,
+# so all existing services behave exactly as before.
+#
+# Routing:
+#   x.zeroq.su        → 127.0.0.1:2049   (3x-ui controller panel; TLS is
+#                       terminated inside the container by the mounted LE
+#                       cert, exactly like pubray1.zeroq.su on the VDS)
+#   immich/git/...    → 127.0.0.1:8443   (nginx's own http {} listener:
+#                       TLS termination + proxyPass unchanged)
+#   default           → 127.0.0.1:15380  (Xray REALITY; podman DNATs
+#                       host:15380 → container:443 so Xray sees its real
+#                       configured port 443)
+#
+# ssl_preread reads SNI from the ClientHello; every SNI matching a known
+# vhost goes to the internal web listener, x.zeroq.su goes to the panel,
+# and anything else (REALITY fronting domains, direct-IP) goes to Xray.
 let
   server = "192.168.1.20";
 
+  panelDomain = "x.zeroq.su";
+  # Replaces the default 443 binding for every public vhost: 443 now
+  # belongs to the stream block, the internal https listener hosts the
+  # real server blocks. Port 80 stays public for ACME http-01 + redirects.
+  webListen = [
+    {
+      addr = "0.0.0.0";
+      port = 80;
+    }
+    {
+      addr = "127.0.0.1";
+      port = 8443;
+      ssl = true;
+    }
+  ];
+
   mkProxy =
     {
       domain,
@@ -22,6 +54,7 @@ let
       name = domain;
       value = {
         enableACME = true;
+        listen = webListen;
         locations."/" = {
           proxyPass = "http://${server}:${toString port}";
           proxyWebsockets = true;
@@ -82,6 +115,49 @@ let
       extraConfig = bigUploads;
     }
   ];
+
+  # Hardcoded vhosts served by the internal web listener (next to `sites`).
+  # Every one of them must appear in the SNI map → web.
+  extraWebDomains = [
+    "office.zeroq.su"
+    "zeroq.su"
+    "vetymae.opencodes.zeroq.su"
+    "lamet.opencodes.zeroq.su"
+    "nextcloud.zeroq.su"
+  ];
+
+  # Goes inside the auto-generated `stream {}` block (services.nginx.streamConfig).
+  # x.zeroq.su → 3x-ui panel; known vhosts → nginx's own https listener;
+  # everything else (any SNI a REALITY client uses, e.g.
+  # media.mediavitrina.ru, or direct-IP) → Xray.
+  streamConfig = ''
+    ssl_preread on;
+
+    map $ssl_preread_server_name $sni_backend {
+      default               xray;
+      ${panelDomain}        panel;
+      ${"\n" + lib.concatMapStringsSep "\n" (d: "      ${d} web;") (extraWebDomains ++ (map (s: s.domain) sites))}
+    }
+
+    upstream panel {
+      server 127.0.0.1:2049;
+    }
+
+    upstream web {
+      server 127.0.0.1:8443;
+    }
+
+    upstream xray {
+      server 127.0.0.1:15380;
+    }
+
+    server {
+      listen 443;
+      proxy_pass $sni_backend;
+      proxy_timeout 600s;
+      proxy_connect_timeout 5s;
+    }
+  '';
 in
 {
   services.nginx = {
@@ -90,6 +166,8 @@ in
     recommendedOptimisation = true;
     recommendedProxySettings = true;
     recommendedTlsSettings = true;
+    # Lands inside the auto-generated `stream {}` block.
+    streamConfig = streamConfig;
     virtualHosts = (builtins.listToAttrs (map mkProxy sites)) // {
       "nextcloud.private" = {
         forceSSL = false;
@@ -112,6 +190,7 @@ in
       "office.zeroq.su" = {
         forceSSL = true;
         enableACME = true;
+        listen = webListen;
       };
       "pdf.private" = {
         forceSSL = false;
@@ -137,30 +216,19 @@ in
         extraConfig = bigUploads;
       };
       "x.zeroq.su" = {
-        forceSSL = true;
+        # ACME only — no https listener here: 443 is owned by the stream
+        # block, which routes the x.zeroq.su SNI to the panel inside the
+        # container (127.0.0.1:2049). 3x-ui terminates TLS itself using
+        # the cert this vhost renews (mounted at /root/cert/), and serves
+        # /subs/, /subsjs/, /clash/ straight from the panel, like the VDS.
+        # Don't add forceSSL: it would generate an HTTPS server block that
+        # conflicts with the stream listener.
         enableACME = true;
-        locations = {
-          "/" = {
-            proxyPass = "http://${server}:2049";
-            proxyWebsockets = true;
-          };
-          "/subs/" = {
-            proxyPass = "http://${server}:2096";
-            proxyWebsockets = true;
-          };
-          "/subsjs/" = {
-            proxyPass = "http://${server}:2096";
-            proxyWebsockets = true;
-          };
-          "/clash/" = {
-            proxyPass = "http://${server}:2096";
-            proxyWebsockets = true;
-          };
-        };
       };
       "zeroq.su" = {
         forceSSL = true;
         enableACME = true;
+        listen = webListen;
         root = pkgs.writeTextDir "index.html" ''
           <!doctype html>
           <html>
@@ -177,6 +245,7 @@ in
       "vetymae.opencodes.zeroq.su" = {
         forceSSL = true;
         enableACME = true;
+        listen = webListen;
         locations."/" = {
           proxyPass = "http://100.86.62.4:4096";
           proxyWebsockets = true;
@@ -185,6 +254,7 @@ in
       "lamet.opencodes.zeroq.su" = {
         forceSSL = true;
         enableACME = true;
+        listen = webListen;
         locations."/" = {
           proxyPass = "http://100.106.21.39:6061";
           proxyWebsockets = true;
@@ -193,6 +263,7 @@ in
       "nextcloud.zeroq.su" = {
         forceSSL = true;
         enableACME = true;
+        listen = webListen;
         locations = {
           "/" = {
             proxyPass = "http://${server}:10000";
@@ -211,4 +282,4 @@ in
     80
     443
   ];
-}
+}