Implement Skeleton for Returning Capes (Currently returns skins)

Align capes.js codestyle to the rest of the project

get_cape_hash helper (not working - wip)

clean up capes.js

routes/capes.js

@@ -0,0 +1,66 @@
+var logging = require("../modules/logging");
+var helpers = require("../modules/helpers");
+var config = require("../modules/config");
+var router = require("express").Router();
+var lwip = require("lwip");
+
+/* GET skin request. */
+router.get("/:uuid.:ext?", function (req, res) {
+  var uuid = (req.params.uuid || "");
+  var def = req.query.default;
+  var start = new Date();
+  var etag = null;
+
+  if (!helpers.uuid_valid(uuid)) {
+    res.status(422).send("422 Invalid UUID");
+    return;
+  }
+
+  // strip dashes
+  uuid = uuid.replace(/-/g, "");
+
+  try {
+    helpers.get_cape(uuid, function (err, hash, image) {
+      logging.log(uuid);
+      if (err) {
+        logging.error(err);
+      }
+      etag = hash && hash.substr(0, 32) || "none";
+      var matches = req.get("If-None-Match") == "\"" + etag + "\"";
+      if (image) {
+        var http_status = 200;
+        if (matches) {
+          http_status = 304;
+        } else if (err) {
+          http_status = 503;
+        }
+        logging.debug("Etag: " + req.get("If-None-Match"));
+        logging.debug("matches: " + matches);
+        logging.log("status: " + http_status);
+        sendimage(http_status, image);
+      } else {
+        res.status(404).send("404 not found");
+      }
+    });
+  } catch (e) {
+    logging.error("Error!");
+    logging.error(e);
+    res.status(500).send("500 error while retrieving cape");
+  }
+
+
+  function sendimage(http_status, image) {
+    res.writeHead(http_status, {
+      "Content-Type": "image/png",
+      "Cache-Control": "max-age=" + config.browser_cache_time + ", public",
+      "Response-Time": new Date() - start,
+      "X-Storage-Type": "downloaded",
+      "Access-Control-Allow-Origin": "*",
+      "Etag": "\"" + etag + "\""
+    });
+    res.end(http_status == 304 ? null : image);
+  }
+});
+
+
+module.exports = router;