a few changes to make A/B testing easier

server/routes/pages.js

@@ -0,0 +1,68 @@
+const routes = require('../../app/routes');
+const storage = require('../storage');
+const state = require('../state');
+
+function validateID(route_id) {
+  return route_id.match(/^[0-9a-fA-F]{10}$/) !== null;
+}
+
+function stripEvents(str) {
+  // For CSP we need to remove all the event handler placeholders.
+  // It's ok, app.js will add them when it attaches to the DOM.
+  return str.replace(/\son\w+=""/g, '');
+}
+
+module.exports = {
+  index: function(req, res) {
+    res.send(stripEvents(routes.toString('/', state(req))));
+  },
+
+  blank: function(req, res) {
+    res.send(stripEvents(routes.toString('/blank', state(req))));
+  },
+
+  download: async function(req, res, next) {
+    const id = req.params.id;
+    if (!validateID(id)) {
+      return next();
+    }
+
+    try {
+      const efilename = await storage.filename(id);
+      const name = decodeURIComponent(efilename);
+      const size = await storage.length(id);
+      const ttl = await storage.ttl(id);
+      res.send(
+        stripEvents(
+          routes.toString(
+            `/download/${req.params.id}`,
+            Object.assign(state(req), {
+              fileInfo: { name, size, ttl }
+            })
+          )
+        )
+      );
+    } catch (e) {
+      next();
+    }
+  },
+
+  unsupported: function(req, res) {
+    res.send(
+      stripEvents(
+        routes.toString(
+          `/unsupported/${req.params.reason}`,
+          Object.assign(state(req), { fira: true })
+        )
+      )
+    );
+  },
+
+  legal: function(req, res) {
+    res.send(stripEvents(routes.toString('/legal', state(req))));
+  },
+
+  notfound: function(req, res) {
+    res.status(404).send(stripEvents(routes.toString('/404', state(req))));
+  }
+};