Minor visual and structural revisions

- Remove the `/feed` endpoint, as this is already handled by `/plain`.
- Rename `/html` endpoint to `/threatfeed`.
- Add a `/docs` endpoint for displaying information on accessing the threat feed.
- Make the Deceptifeed logo smaller on HTML pages.
- Revise the layout of the initial homepage. Endpoint docs are now moved and linked to /docs.
- Remove `/html` from the list of threat feed endpoints in the docs, as it doesn't belong here (there is a link to the html threat feed on the home page).

internal/threatfeed/handler.go

@@ -303,6 +303,15 @@ func handleHome(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
+func handleDocs(w http.ResponseWriter, r *http.Request) {
+	tmpl := template.Must(template.ParseFS(templates, "templates/docs.html"))
+	err := tmpl.Execute(w, nil)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "Failed to parse /docs template:", err)
+		return
+	}
+}
+
 // handleHTML returns the threat feed as a web page for viewing in a browser.
 func handleHTML(w http.ResponseWriter, r *http.Request) {
 	opt, err := parseParams(r)

internal/threatfeed/server.go

@@ -54,10 +54,11 @@ func Start(c *config.Config) {
 	mux := http.NewServeMux()
 	mux.HandleFunc("GET /", enforcePrivateIP(handleNotFound))
 	mux.HandleFunc("GET /{$}", enforcePrivateIP(handleHome))
-	mux.HandleFunc("GET /feed", enforcePrivateIP(disableCache(handlePlain)))
+	mux.HandleFunc("GET /docs", enforcePrivateIP(handleDocs))
+	// Threat feed handlers.
+	mux.HandleFunc("GET /threatfeed", enforcePrivateIP(disableCache(handleHTML)))
 	mux.HandleFunc("GET /plain", enforcePrivateIP(disableCache(handlePlain)))
 	mux.HandleFunc("GET /csv", enforcePrivateIP(disableCache(handleCSV)))
-	mux.HandleFunc("GET /html", enforcePrivateIP(disableCache(handleHTML)))
 	mux.HandleFunc("GET /json", enforcePrivateIP(disableCache(handleJSON)))
 	mux.HandleFunc("GET /stix", enforcePrivateIP(disableCache(handleSTIX)))
 	// TAXII 2.1 handlers.

internal/threatfeed/templates/htmlfeed.html

@@ -25,8 +25,7 @@
         /* Logo */
         /* ==== */
         .logo {
-            max-height: 63px;
-            max-width: 370px;
+            max-width: 280px;
         }
 
         /* ====== */
@@ -124,13 +123,13 @@
         }
 
         a:hover {
-            color: #ffac11;
+            color: #fa1;
             text-decoration: underline;
             text-underline-offset: .1875rem;
         }
 
         a:active {
-            background: #ffac11;
+            background: #fa1;
             color: black;
             text-decoration: none;
         }