Prelim support for QNAP NAS

src/widgets/qnap/proxy.js

@@ -0,0 +1,95 @@
+/* eslint no-underscore-dangle: ["error", { "allow": ["_text", "_cdata"] }] */
+
+import cache from "memory-cache";
+import { xml2json } from "xml-js";
+
+import { httpProxy } from "utils/proxy/http";
+import { formatApiCall } from "utils/proxy/api-helpers";
+import getServiceWidget from "utils/config/service-helpers";
+import createLogger from "utils/logger";
+
+const proxyName = "qnapProxyHandler";
+const sessionTokenCacheKey = `${proxyName}__sessionToken`;
+const logger = createLogger(proxyName);
+
+async function login(widget, service) {
+  const endpoint = "{url}/cgi-bin/authLogin.cgi";
+  const loginUrl = new URL(formatApiCall(endpoint, widget ));
+  const headers = { "Content-Type": "application/x-www-form-urlencoded" };
+
+  const [, , data,] = await httpProxy(loginUrl, {
+    method: "POST",
+    body: new URLSearchParams({
+      user: widget.username,
+      pwd: Buffer.from(`${widget.password}`).toString("base64")
+    }).toString(),
+    headers,
+  });
+
+  try {
+    const dataDecoded = xml2json(data.toString(), { compact: true });
+    const jsonData = JSON.parse(dataDecoded);
+    const token = jsonData.QDocRoot.authSid._cdata;
+    cache.put(`${sessionTokenCacheKey}.${service}`, token);
+    return { token };
+  } catch (e) {
+    logger.error("Unable to login to QNAP API: %s", e);
+  }
+
+  return { token: false };
+}
+
+async function apiCall(widget, endpoint, service) {
+  let key = cache.get(`${sessionTokenCacheKey}.${service}`);
+  const method = "GET";
+
+  let apiUrl = new URL(formatApiCall(`${endpoint}&sid=${key}`, widget));
+  let [status, contentType, data, responseHeaders] = await httpProxy(apiUrl, {
+    method
+  });
+
+  if (status === 404) {
+    logger.error("QNAP API rejected the request, attempting to obtain new session token");
+    key = await login(widget, service);
+    apiUrl = new URL(formatApiCall(`${endpoint}&sid=${key}`, widget));
+    [status, contentType, data, responseHeaders] = await httpProxy(apiUrl, {
+      method
+    });
+  }
+
+  if (status !== 200) {
+    logger.error("Error getting data from QNAP: %s status %d. Data: %s", apiUrl, status, data);
+    return { status, contentType, data: null, responseHeaders };
+  }
+
+  const dataDecoded = xml2json(data.toString(), { compact: true });
+  logger.debug("Dayta '%s'", dataDecoded);
+  return { status, contentType, data: JSON.parse(dataDecoded.toString()), responseHeaders };
+}
+
+export default async function qnapProxyHandler(req, res) {
+  const { group, service } = req.query;
+
+  if (!group || !service) {
+    logger.debug("Invalid or missing service '%s' or group '%s'", service, group);
+    return res.status(400).json({ error: "Invalid proxy service type" });
+  }
+
+  const widget = await getServiceWidget(group, service);
+  if (!widget) {
+    logger.debug("Invalid or missing widget for service '%s' in group '%s'", service, group);
+    return res.status(400).json({ error: "Invalid proxy service type" });
+  }
+
+  if (!cache.get(`${sessionTokenCacheKey}.${service}`)) {
+    await login(widget, service);
+  }
+
+  const { data: systemStatsData } = await apiCall(widget, "{url}/cgi-bin/management/manaRequest.cgi?subfunc=sysinfo&hd=no&multicpu=1", service);
+  const { data: volumeStatsData } = await apiCall(widget, "{url}/cgi-bin/management/chartReq.cgi?chart_func=disk_usage&disk_select=all&include=all", service);
+
+  return res.status(200).send({
+    system: systemStatsData.QDocRoot.func.ownContent.root,
+    volume: volumeStatsData.QDocRoot.volumeUseList
+  });
+}