Initial commit

1 files changed, 78 insertions, 0 deletions

diff --git a/lib/static.js b/lib/static.js
new file mode 100644
index 0000000..ef48ae6
--- /dev/null
+++ b/lib/static.js
@@ -0,0 +1,78 @@
+"use strict";
+
+const Path = require("path");
+const url = require("url");
+const fs = require("fs");
+
+const mimeTypes = {
+  ".html": "text/html",
+  ".css":  "text/css",
+  ".js":   "text/javascript",
+  ".json": "application/json",
+  ".wasm": "application/wasm",
+  ".pdf":  "application/pdf",
+  ".txt":  "text/plain",
+  ".md":   "text/markdown",
+
+  ".png":  "image/png",
+  ".jpg":  "image/jpg",
+  ".svg":  "image/svg+xml",
+  ".gif":  "image/gif",
+  ".ico":  "image/x-icon",
+
+  ".wav":  "audio/wav",
+  ".mp3":  "audio/mpeg",
+  ".mp4":  "video/mp4",
+
+  ".eot":  "application/vnd.ms-fontobject",
+  ".ttf":  "application/font-ttf",
+  ".woff": "application/font-woff",
+
+  ".gltf": "model/gltf+json",
+  ".glb":  "model/gltf-binary",
+};
+
+module.exports = class Static {
+  constructor(root) {
+    this.root = `${root||"."}`;
+    this.e404 = fs.readFileSync(`${this.root}/404.html`);
+    this.e500 = fs.readFileSync(`${this.root}/500.html`);
+  }
+
+  route(req, res) {
+    if (req.method !== "GET") {
+      res.writeHead(405, {"Content-Type": "text/plain"});
+      res.end("405 Method Not Allowed");
+      return;
+    }
+
+    const pathname = url.parse(req.url).pathname;
+    const sane = Path.normalize(pathname).replace(/^(\.\.\/)+/, "");
+    let path = `${this.root}${sane}`; //Path.join(__dirname, sane);
+
+    fs.stat(path, (err, stats) => {
+      if (err) { if (["EACCES", "ENOENT", "EPERM"].includes(err.code)) {
+        res.writeHead(404, {"Content-Type": "text/html"});
+        return res.end(this.e404);
+      } else { console.log(err);
+        res.writeHead(500, {"Content-Type": "text/html"});
+        return res.end(this.e500);
+      }}
+
+      if (stats.isDirectory()) path += "/index.html";
+      const ext = `${Path.extname(path)}`.toLowerCase();
+      const stream = fs.createReadStream(path);
+
+      stream.on("error", e => { console.log(e);
+        res.writeHead(500, {"Content-Type": "text/html"});
+        //res.end(`<pre>Error getting the file: ${e}</pre>`);
+        res.end(this.e500);
+      });
+
+      res.setHeader("Content-Type", mimeTypes[ext]||"application/octet-stream");
+      // TODO Caching?
+
+      stream.pipe(res);
+    });
+  }
+};