pxe-server/pixiecore-api.ts at main · leigh-hackspace/pxe-server · GitHub

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const nfsServer = Deno.env.get("NFS_SERVER")!;
const port = parseInt(Deno.env.get("API_PORT")!, 10);

const kernelFile = Deno.env.get("KERNEL")!;
const initrdFile = Deno.env.get("INITRD")!;
const cmdline = Deno.env.get("CMDLINE");

const kernelMinFile = Deno.env.get("KERNEL_MIN")!;
const initrdMinFile = Deno.env.get("INITRD_MIN")!;
const cmdlineMin = Deno.env.get("CMDLINE_MIN");

Deno.serve({ hostname: "0.0.0.0", port }, (req) => {
  if (req.url.endsWith("kernel")) {
    console.log("Deno API server: Serving kernel");
    const kernel = Deno.readFileSync(kernelFile);
    return new Response(kernel, {
      headers: {
        "Content-Type": "application/octet-stream",
        "Content-Length": String(kernel.byteLength),
      },
    });
  }

  if (req.url.endsWith("initrd")) {
    console.log("Deno API server: Serving initrd");
    const initrd = Deno.readFileSync(initrdFile);
    return new Response(initrd, {
      headers: {
        "Content-Type": "application/octet-stream",
        "Content-Length": String(initrd.byteLength),
      },
    });
  }

  if (req.url.endsWith("booting")) {
    console.log("Deno API server: Booting");
    return new Response("OK", { headers: [["Content-Type", "text/plain"]] });
  }

  if (req.url.endsWith("kernel-min")) {
    console.log("Deno API server: Serving kernel");
    const kernel = Deno.readFileSync(kernelMinFile);
    return new Response(kernel, {
      headers: {
        "Content-Type": "application/octet-stream",
        "Content-Length": String(kernel.byteLength),
      },
    });
  }

  if (req.url.endsWith("initrd-min")) {
    console.log("Deno API server: Serving initrd");
    const initrd = Deno.readFileSync(initrdMinFile);
    return new Response(initrd, {
      headers: {
        "Content-Type": "application/octet-stream",
        "Content-Length": String(initrd.byteLength),
      },
    });
  }

  if (req.url.endsWith("booting-min")) {
    console.log("Deno API server: Booting Min");
    return new Response("OK", { headers: [["Content-Type", "text/plain"]] });
  }

  function getIpxeScript() {
    return `
#!ipxe

# Show boot menu with timeout
:start
menu Boot Options
item --gap --             ------------------------- Boot Options -------------------------
item --default local      Start Windows
item network              Start Linux
item networkmin           Start Linux Min
item --gap --             --------------------------------------------------------
choose --timeout 10000 --default local selected || goto cancel
goto \${selected}

:network
kernel --name kernel http://${nfsServer}:${port}/kernel
initrd --name initrd0 http://${nfsServer}:${port}/initrd
imgfetch --name ready http://${nfsServer}:${port}/booting ||
imgfree ready ||
boot kernel initrd=initrd0 ${cmdline}

:networkmin
kernel --name kernel http://${nfsServer}:${port}/kernel-min
initrd --name initrd0 http://${nfsServer}:${port}/initrd-min
imgfetch --name ready http://${nfsServer}:${port}/booting-min ||
imgfree ready ||
boot kernel initrd=initrd0 ${cmdlineMin}

:local
echo Exiting to next boot device...
exit 1

:cancel
echo Boot cancelled, exiting to next boot device...
exit 1
    `.trim();
  }

  console.log("Deno API server: Responding with boot spec...");
  return new Response(
    JSON.stringify(
      {
        "kernel": `http://${nfsServer}:${port}/kernel`,
        "initrd": [`http://${nfsServer}:${port}/initrd`],
        "cmdline": cmdline,
        "ipxe-script": getIpxeScript(),
      },
    ),
    { headers: [["Content-Type", "application/json"]] },
  );
});