move html, js, css and gmi files to "frontend" dir

For clarity.

.reuse/dep5

@@ -11,22 +11,10 @@ Files: .gitignore
 Copyright: 2022-2023 nervuri <https://nervuri.net/contact>
 License: BSD-3-Clause
 
-Files: *.gmi
+Files: frontend/*
 Copyright: 2022-2023 nervuri <https://nervuri.net/contact>
 License: BSD-3-Clause
 
-Files: *.tpl
-Copyright: 2022-2023 nervuri <https://nervuri.net/contact>
-License: BSD-3-Clause
-
-Files: style.css
-Copyright: 2023 nervuri <https://nervuri.net/contact>
-License: BSD-3-Clause
-
-Files: script.js
-Copyright: 2023 nervuri <https://nervuri.net/contact>
-License: BSD-3-Clause
-
 Files: clienthello/*.csv
 Copyright: IANA and IETF
 License: CC0-1.0

NJA3.md

@@ -93,4 +93,4 @@ On a final note, string-based fingerprinting is fundamentally limited compared t
 
 ## Implementation
 
-The first implementation is written in Go and can be found [here](https://tildegit.org/nervuri/client-hello-mirror/clienthello/fingerprint.go#L57).  This code is part of the TLS Client Hello Mirror, a live instance of which is running at [tlsprivacy.nervuri.net](https://tlsprivacy.nervuri.net/), which will (among other things) generate the NJA3 fingerprint of any HTTPS or [Gemini](https://geminiprotocol.net/) client you connect to it.
+The first implementation is written in Go and can be found [here](https://tildegit.org/nervuri/client-hello-mirror/src/branch/master/clienthello/fingerprint.go#L69).  This code is part of the TLS Client Hello Mirror, a live instance of which is running at [tlsprivacy.nervuri.net](https://tlsprivacy.nervuri.net/), which will (among other things) generate the NJA3 fingerprint of any HTTPS or [Gemini](https://geminiprotocol.net/) client you connect to it.

clienthello/fingerprint.go

@@ -48,11 +48,12 @@ func (m *ClientHelloMsg) ja3() {
 	}
 	for _, e := range m.Extensions {
 		codeGroups[2] += deGREASE16(e.Code, "")
-		if e.Code == extensionSupportedGroups {
+		switch e.Code {
+		case extensionSupportedGroups:
 			for _, g := range e.Data.SupportedGroups {
 				codeGroups[3] += deGREASE16(g.(uint16), "")
 			}
-		} else if e.Code == extensionSupportedPointFormats {
+		case extensionSupportedPointFormats:
 			for _, pf := range e.Data.SupportedPointFormats {
 				codeGroups[4] += toString(pf.(uint8)) + "-"
 			}
@@ -95,27 +96,28 @@ func (m *ClientHelloMsg) nja3() {
 			e.Code = genericGREASECode16
 		}
 		extCodes = append(extCodes, e.Code)
-		if e.Code == extensionSupportedGroups {
+		switch e.Code {
+		case extensionSupportedGroups:
 			for _, g := range e.Data.SupportedGroups {
 				codeGroups[4] += deGREASE16(g.(uint16), genericGreaseString16)
 			}
-		} else if e.Code == extensionSupportedPointFormats {
+		case extensionSupportedPointFormats:
 			for _, pf := range e.Data.SupportedPointFormats {
 				codeGroups[5] += toString(pf.(uint8)) + "-"
 			}
-		} else if e.Code == extensionSupportedVersions {
+		case extensionSupportedVersions:
 			for _, v := range e.Data.SupportedVersions {
 				codeGroups[6] += deGREASE16(v.(uint16), genericGreaseString16)
 			}
-		} else if e.Code == extensionSignatureAlgorithms {
+		case extensionSignatureAlgorithms:
 			for _, sa := range e.Data.SupportedSignatureAlgorithms {
 				codeGroups[7] += deGREASE16(sa.(uint16), genericGreaseString16)
 			}
-		} else if e.Code == extensionPSKModes {
+		case extensionPSKModes:
 			for _, mode := range e.Data.PSKModes {
 				codeGroups[8] += deGREASE8(mode.(uint8), genericGreaseString8)
 			}
-		} else if e.Code == extensionCompressCertificate {
+		case extensionCompressCertificate:
 			for _, algo := range e.Data.CertificateCompressionAlgos {
 				codeGroups[9] += toString(algo.(uint16)) + "-"
 			}

server.go

@@ -54,19 +54,19 @@ func fatalError(err ...any) {
 	logger.Fatal(err...)
 }
 
-//go:embed index.html
+//go:embed frontend/index.html
 var html string
 
-//go:embed error.html
+//go:embed frontend/error.html
 var htmlError string
 
-//go:embed style.css
+//go:embed frontend/style.css
 var css string
 
-//go:embed script.js
+//go:embed frontend/script.js
 var js string
 
-//go:embed index.gmi
+//go:embed frontend/index.gmi
 var gemtext string
 
 // Copy the Client Hello message before starting the TLS handshake.