Esempio n. 1
0
func (b *HTTPBooter) fileHandler(w http.ResponseWriter, r *http.Request) {
	splitPath := strings.SplitN(r.URL.Path, "/", 4)
	version := splitPath[2]
	id := splitPath[3]

	var (
		f   io.ReadCloser
		err error
	)

	f, err = b.coreOS(version, id)

	if err != nil {
		utils.LogAccess(r).WithError(err).WithField("where", "pxe.fileHandler").Warn(
			"error while getting CoreOS reader")
		http.Error(w, "Couldn't get byte stream", http.StatusInternalServerError)
		return
	}
	defer f.Close()

	w.Header().Set("Content-Type", "application/octet-stream")
	written, err := io.Copy(w, f)
	if err != nil {
		utils.LogAccess(r).WithError(err).WithField("where", "pxe.fileHandler").Debug(
			"error while copying from CoreOS reader")
		return
	}

	utils.LogAccess(r).WithField("where", "pxe.fileHandler").Infof("written=%d", written)
}
Esempio n. 2
0
func (b *HTTPBooter) pxelinuxConfig(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Content-Type", "text/plain")

	macStr := filepath.Base(r.URL.Path)
	errStr := fmt.Sprintf("%s requested a pxelinux config from URL %q, which does not include a correct MAC address", r.RemoteAddr, r.URL)
	if !strings.HasPrefix(macStr, "01-") {
		utils.LogAccess(r).WithField("where", "pxe.pxelinuxConfig").Debug(errStr)
		http.Error(w, "Missing MAC address in request", http.StatusBadRequest)
		return
	}
	mac, err := net.ParseMAC(macStr[3:])
	if err != nil {
		utils.LogAccess(r).WithError(err).WithField("where", "pxe.pxelinuxConfig").Debug()
		http.Error(w, "Malformed MAC address in request", http.StatusBadRequest)
		return
	}

	machineInterface := b.datasource.MachineInterface(mac)
	_, err = machineInterface.Machine(false, nil)
	if err != nil {
		utils.LogAccess(r).WithError(err).WithField("where", "pxe.pxelinuxConfig").Debug(
			"Machine not found")
		http.Error(w, "Machine not found", http.StatusNotFound)
		return
	}

	if _, _, err := net.SplitHostPort(r.Host); err != nil {
		r.Host = fmt.Sprintf("%s:%d", r.Host, b.listenAddr.Port)
	}

	coreOSVersion, err := machineInterface.GetVariable(datasource.SpecialKeyCoreosVersion)
	if err != nil {
		utils.LogAccess(r).WithError(err).WithField("where", "pxe.pxelinuxConfig").Warn(
			"error in getting coreOSVersion")
		http.Error(w, "error in getting coreOSVersion", 500)
		return
	}

	KernelURL := "http://" + r.Host + "/f/" + coreOSVersion + "/kernel"
	InitrdURL := "http://" + r.Host + "/f/" + coreOSVersion + "/initrd"

	host, _, err := net.SplitHostPort(r.Host)
	if err != nil {
		utils.LogAccess(r).WithError(err).WithField("where", "pxe.pxelinuxConfig").Debug(
			"error in parsing host and port")
		http.Error(w, "error in parsing host and port", 500)
		return
	}

	params, err := templating.ExecuteTemplateFolder(
		path.Join(b.datasource.WorkspacePath(), "config", "bootparams"), b.datasource, machineInterface, r.Host)
	if err != nil {
		utils.LogAccess(r).WithError(err).WithField("where", "pxe.pxelinuxConfig").Warn(
			"error while executing the template")
		http.Error(w, fmt.Sprintf(`Error while executing the template: %q`, err),
			http.StatusInternalServerError)
		return
	}

	params = strings.Replace(params, "\n", " ", -1)

	Cmdline := fmt.Sprintf(
		"cloud-config-url=http://%s:%d/t/cc/%s "+
			"coreos.config.url=http://%s:%d/t/ig/%s %s",
		host, b.webPort, mac.String(),
		host, b.webPort, mac.String(), params)
	bootMessage := strings.Replace(b.bootMessageTemplate, "$MAC", macStr, -1)
	cfg := fmt.Sprintf(`
SAY %s
DEFAULT linux
LABEL linux
LINUX %s
APPEND initrd=%s %s
`, strings.Replace(bootMessage, "\n", "\nSAY ", -1), KernelURL, InitrdURL, Cmdline)
	w.Write([]byte(cfg))

	utils.LogAccess(r).WithField("where", "pxe.pxelinuxConfig").Info()
}
Esempio n. 3
0
func (b *HTTPBooter) ldlinuxHandler(w http.ResponseWriter, r *http.Request) {
	utils.LogAccess(r).WithField("where", "pxe.ldlinuxHandler").Info()
	w.Header().Set("Content-Type", "application/octet-stream")
	w.Write(b.ldlinux)
}