put JS code directly in index.html

This fixes a bug where the template parameters in the JS code were not
being replaced with actual values.

Makefile

@@ -17,7 +17,7 @@ check:
 	golangci-lint run
 	#go vet
 	#go test
-	find . -name '*.html' -exec xmllint --noout {} \;
+	find . -name '*.html' ! -path './frontend/index.html' -exec xmllint --noout {} \;
 	find . -name '*.html' -exec sh -c 'tidy -q -errors -access "{}" || ls "{}"' \;
 	reuse lint -q
 

frontend/index.html

@@ -120,6 +120,17 @@ SPDX-License-Identifier: BSD-3-Clause
 	<a href="https://tildegit.org/nervuri/client-hello-mirror" target="_blank">Source</a> (contributions welcome)<br/>
 	License: <a href="https://opensource.org/license/BSD-3-clause/" target="_blank">BSD-3-Clause</a>
 </footer>
-<script>{{.JS}}</script>
+<script>
+	// Client-side check to see if the Client Hello's gmt_unix_time
+	// corresponds to the system time.  More accurate than the
+	// server-side check.
+	// The connection may have been slow, so allow gmt_unix_time to
+	// be 60 seconds in the past.
+	var gmtUnixTime = {{.GMTUnixTime}}
+	var now =  Math.round(Date.now() / 1000)
+	if (now - 60 < gmtUnixTime && gmtUnixTime < now + 2) {
+		document.getElementById('systime').innerHTML = '{{.SystemTimeExposedJS}}'
+	}
+</script>
 </body>
 </html>

frontend/script.js

@@ -1,11 +0,0 @@
-
-	// Client-side check to see if the Client Hello's gmt_unix_time
-	// corresponds to the system time.  More accurate than the
-	// server-side check.
-	// The connection may have been slow, so allow gmt_unix_time to
-	// be 60 seconds in the past.
-	var gmtUnixTime = {{.GMTUnixTime}}
-	var now =  Math.round(Date.now() / 1000)
-	if (now - 60 < gmtUnixTime && gmtUnixTime < now + 2) {
-		document.getElementById('systime').innerHTML = '{{.SystemTimeExposedJS}}'
-	}

server.go

@@ -63,9 +63,6 @@ var htmlError string
 //go:embed frontend/style.css
 var css string
 
-//go:embed frontend/script.js
-var js string
-
 //go:embed frontend/index.gmi
 var gemtext string
 
@@ -271,7 +268,6 @@ func requestHandler(conn *tls.Conn, rawClientHello []byte) {
 					JA3MD5                string
 					NJA3v1                htmlTemplate.HTML
 					NJA3v1Hash            string
-					JS                    htmlTemplate.JS
 				}{
 					htmlTemplate.CSS(css),
 					htmlTemplate.HTML(getTLSVersionHTML(connectionState.Version)),
@@ -293,7 +289,6 @@ func requestHandler(conn *tls.Conn, rawClientHello []byte) {
 					hex.EncodeToString(clientHelloMsg.Highlights.JA3MD5),
 					htmlTemplate.HTML(formatNJA3v1(clientHelloMsg.Highlights.NJA3v1)),
 					hex.EncodeToString(clientHelloMsg.Highlights.NJA3v1Hash),
-					htmlTemplate.JS(js),
 				})
 				if err != nil {
 					log.Println(err)