Updated from `js_include` to `js_import` in nginx which has been deprecated

nginx/root/etc/nginx/nginx.template

@@ -99,7 +99,7 @@ stream {
   access_log /var/log/nginx/dns-access.log dns;
 
   # Include the NJS module
-  js_include /etc/nginx/njs.d/nginx_stream.js;
+  js_import /etc/nginx/njs.d/dns/dns.js;
 
   # The $dns_qname variable can be populated by preread calls, and can be used for DNS routing
   js_set $dns_qname dns_get_qname;
@@ -129,7 +129,7 @@ stream {
   # DNS over HTTPS (gateway) Service
   server {
     listen 127.0.0.1:8053;
-    js_filter dns_filter_doh_request;
+    js_filter dns.filter_doh_request;
     proxy_pass dns;
   }
 

nginx/root/etc/nginx/njs.d/dns/dns.js

@@ -8,7 +8,7 @@ export default {get_qname, get_response, preread_doh_request, preread_dns_reques
  * 2: As 1, but also parse answers. We can log the answers, and also cache responses in HTTP Content-Cache
  * 3: Very Verbose, log everything as above, but also write packet data to error log (slowest)
 **/
-var dns_decode_level = 2;
+var dns_decode_level = 3;
 
 /**
  * DNS Question Load Balancing
@@ -47,49 +47,58 @@ function process_doh_request(s, decode, scrub) {
     if ( data.length == 0 ) {
       return;
     }
-    data.split("\r\n").forEach( function(line) {
+    const lines = data.split("\r\n");
-      var bytes;
+    var bytes;
-      var packet;
+    var packet;
+    if(lines[0].startsWith("GET")) {
+      var line = lines[0];
+      var path = line.split(" ")[1]
+      var params = path.split("?")[1]
+      var qs = params.split("&");
+      debug(s, "process_doh_request: QS Params: " + qs );
+      qs.some( param => {
+        if (param.startsWith("dns=") ) {
+          bytes = String.bytesFrom(param.slice(4), "base64url");
+          return true;
+        }
+        return false;
+      });
+    }
 
-      if ( line.toString('hex').startsWith( '0000') ) {
+    if(lines[0].startsWith("POST")) {
-        bytes = line;
+      const index = lines.findIndex(line=>{
-      } else if ( line.toString().startsWith("GET /dns-query?") ) {
+        if(line.length == 0) {
-	      var qs = line.slice("GET /dns-query?".length, line.length - " HTTP/1.1".length)
+          return true;
-	      qs = qs.split("&");
+        }
-        debug(s, "process_doh_request: QS Params: " + qs );
+      })
-	      qs.some( param => {
+      if(index>0 && lines.length >= index + 1){
-	        if ( param.startsWith("dns=") ) {
+        bytes = lines[index + 1];
-            bytes = String.bytesFrom(param.slice(4), "base64url");
-            return true;
-	        }
-	        return false;
-	      });
       }
+    }
 
-      if (bytes) {
+    if (bytes) {
-        debug(s, "process_doh_request: DNS Req: " + bytes.toString('hex') );
+      debug(s, "process_doh_request: DNS Req: " + bytes.toString('hex') );
-        if (decode) {
+      if (decode) {
-          packet = dns.parse_packet(bytes);
+        packet = dns.parse_packet(bytes);
-          debug(s, "process_doh_request: DNS Req ID: " + packet.id );
+        debug(s, "process_doh_request: DNS Req ID: " + packet.id );
-          dns.parse_question(packet);
+        dns.parse_question(packet);
-          debug(s,"process_doh_request: DNS Req Name: " + packet.question.name);
+        debug(s,"process_doh_request: DNS Req Name: " + packet.question.name);
-          dns_name = packet.question.name;
+        dns_name = packet.question.name;
-        }
+      }
-        if (scrub) {
+      if (scrub) {
-          domain_scrub(s, bytes, packet);
+        domain_scrub(s, bytes, packet);
-          s.done();
+        s.done();
-        } else {
-          s.send( to_bytes(bytes.length) );
-          s.send( bytes, {flush: true} );
-        }
       } else {
-        if ( ! scrub) {
+        s.send( to_bytes(bytes.length) );
-          debug(s, "process_doh_request: DNS Req: " + line.toString() );
+        s.send( bytes, {flush: true} );
-          s.send("");
-          data = "";
-        }
       }
-    });
+    } else {
+      if ( ! scrub) {
+        debug(s, "process_doh_request: DNS Req: " + line.toString() );
+        s.send("");
+        data = "";
+      }
+    }
   });
 }