Internalize previously external libraries and stylesheets

Signed-off-by: Knut Ahlers <knut@ahlers.me>

.gitignore

@@ -1,2 +1,5 @@
-ots
+frontend/css
+frontend/js
 frontend/locale/*.untranslated.json
+frontend/webfonts
+ots

Makefile

@@ -1,4 +1,14 @@
-generate: l10n
+VER_BOOTSTRAP=4.0.0
+VER_BOOTSWATCH=4.1.1
+VER_FONTAWESOME=5.0.12
+VER_GIBBERISH_AES=1.0.0
+VER_JQUERY=3.3.1
+VER_POPPER=1.14.1
+
+
+default: generate
+
+generate: l10n download_libs
 	docker run --rm -ti -v $(CURDIR):$(CURDIR) -w $(CURDIR) node \
 		bash -c "npm install -g coffeescript && coffee -c frontend/application.coffee && chown -R $(shell id -u) frontend"
 	go generate
@@ -9,3 +19,26 @@ l10n:
 publish:
 	curl -sSLo golang.sh https://raw.githubusercontent.com/Luzifer/github-publish/master/golang.sh
 	bash golang.sh
+
+# -- Download / refresh external libraries --
+
+clean_libs:
+	rm -rf frontend/css frontend/webfonts frontend/js
+
+download_libs: clean_libs fontawesome libs_js libs_css
+
+fontawesome:
+	curl -sSfL https://github.com/FortAwesome/Font-Awesome/archive/$(VER_FONTAWESOME).tar.gz | \
+		tar -C frontend -xz --strip-components=2 --wildcards '*/web-fonts-with-css/css' '*/web-fonts-with-css/webfonts'
+
+libs_css:
+	mkdir -p frontend/css
+	curl -sSfLo frontend/css/bootstrap.min.css "https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/$(VER_BOOTSTRAP)/css/bootstrap.min.css"
+	curl -sSfLo frontend/css/bootswatch.min.css "https://cdnjs.cloudflare.com/ajax/libs/bootswatch/$(VER_BOOTSWATCH)/flatly/bootstrap.min.css"
+
+libs_js:
+	mkdir -p frontend/js
+	curl -sSfLo frontend/js/jquery.min.js "https://cdnjs.cloudflare.com/ajax/libs/jquery/$(VER_JQUERY)/jquery.min.js"
+	curl -sSfLo frontend/js/bootstrap.min.js "https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/$(VER_BOOTSTRAP)/js/bootstrap.min.js"
+	curl -sSfLo frontend/js/popper.min.js "https://cdnjs.cloudflare.com/ajax/libs/popper.js/$(VER_POPPER)/popper.min.js"
+	curl -sSfLo frontend/js/gibberish-aes.min.js "https://cdnjs.cloudflare.com/ajax/libs/gibberish-aes/$(VER_GIBBERISH_AES)/gibberish-aes.min.js"

frontend/index.html

@@ -6,14 +6,9 @@
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
 
-    <!-- Bootstrap -->
-    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0/css/bootstrap.min.css"
-          integrity="sha256-LA89z+k9fjgMKQ/kq4OO2Mrf8VltYml/VES+Rg0fh20=" crossorigin="anonymous" />
-    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootswatch/4.1.1/flatly/bootstrap.min.css"
-          integrity="sha256-Aq7aBPqZwiUM2fHchlRaVD7RFsEBto+K77fvREGjnHU=" crossorigin="anonymous" />
-
-		<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.0.12/css/all.css"
-          integrity="sha384-G0fIWCsCzJIMAVNQPfjH08cyYaUtMwjJwqiRKxxE/rx96Uroj1BtIQ6MLJuheaO9" crossorigin="anonymous">
+    <link rel="stylesheet" href="/css/bootstrap.min.css" />
+    <link rel="stylesheet" href="/css/bootswatch.min.css" />
+		<link rel="stylesheet" href="/css/fontawesome-all.min.css" />
 
     <title>OTS - One Time Secrets</title>
 
@@ -127,16 +122,10 @@
       </div>
     </div>
 
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"
-            integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.1/popper.min.js"
-            integrity="sha256-ST2MecrXrJaAsqmfpk9XRQITlDoyMmUtgKBEndDisSc=" crossorigin="anonymous"></script>
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0/js/bootstrap.min.js"
-            integrity="sha256-5+02zu5UULQkO7w1GIr6vftCgMfFdZcAHeDtFnKZsBs=" crossorigin="anonymous"></script>
-
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/gibberish-aes/1.0.0/gibberish-aes.min.js"
-            integrity="sha256-H9B/XRDijNiF3agVjtiz1ILVi3csEdGz9YBg5TjWouM=" crossorigin="anonymous"></script>
-
+		<script src="/js/jquery.min.js"></script>
+    <script src="/js/popper.min.js"></script>
+    <script src="/js/bootstrap.min.js"></script>
+    <script src="/js/gibberish-aes.min.js"></script>
     <script src="application.js"></script>
   </body>
 </html>

main.go

@@ -75,6 +75,12 @@ func assetDelivery(res http.ResponseWriter, r *http.Request) {
 
 	res.Header().Set("Content-Type", mime.TypeByExtension(ext))
 
+	if assetName != "/index.html" {
+		// Do not use template engine on other files than index.html
+		res.Write(assetData)
+		return
+	}
+
 	tpl, err := template.New(assetName).Funcs(getTFuncMap(r)).Parse(string(assetData))
 
 	if err != nil {