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120 lines
4.0 KiB
120 lines
4.0 KiB
import cache from "memory-cache";
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import { formatApiCall } from "utils/proxy/api-helpers";
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import { httpProxy } from "utils/proxy/http";
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import { addCookieToJar, setCookieHeader } from "utils/proxy/cookie-jar";
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import { getSettings } from "utils/config/config";
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import getServiceWidget from "utils/config/service-helpers";
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import createLogger from "utils/logger";
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import widgets from "widgets/widgets";
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const udmpPrefix = "/proxy/network";
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const proxyName = "unifiProxyHandler";
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const prefixCacheKey = `${proxyName}__prefix`;
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const logger = createLogger(proxyName);
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async function getWidget(req) {
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const { group, service, type } = req.query;
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let widget = null;
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if (type === "unifi_console") {
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const settings = getSettings();
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widget = settings.unifi_console;
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if (!widget) {
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logger.debug("There is no unifi_console section in settings.yaml");
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return null;
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}
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widget.type = "unifi";
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} else {
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if (!group || !service) {
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logger.debug("Invalid or missing service '%s' or group '%s'", service, group);
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return null;
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}
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widget = await getServiceWidget(group, service);
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if (!widget) {
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logger.debug("Invalid or missing widget for service '%s' in group '%s'", service, group);
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return null;
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}
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}
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return widget;
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}
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async function login(widget) {
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const endpoint = (widget.prefix === udmpPrefix) ? "auth/login" : "login";
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const api = widgets?.[widget.type]?.api?.replace("{prefix}", ""); // no prefix for login url
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const loginUrl = new URL(formatApiCall(api, { endpoint, ...widget }));
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const loginBody = { username: widget.username, password: widget.password, remember: true };
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const headers = { "Content-Type": "application/json" };
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const [status, contentType, data, responseHeaders] = await httpProxy(loginUrl, {
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method: "POST",
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body: JSON.stringify(loginBody),
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headers,
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});
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return [status, contentType, data, responseHeaders];
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}
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export default async function unifiProxyHandler(req, res) {
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const widget = await getWidget(req);
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if (!widget) {
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return res.status(400).json({ error: "Invalid proxy service type" });
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}
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const api = widgets?.[widget.type]?.api;
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if (!api) {
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return res.status(403).json({ error: "Service does not support API calls" });
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}
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let [status, contentType, data, responseHeaders] = [];
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let prefix = cache.get(prefixCacheKey);
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if (prefix === null) {
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// auto detect if we're talking to a UDM Pro, and cache the result so that we
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// don't make two requests each time data from Unifi is required
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[status, contentType, data, responseHeaders] = await httpProxy(widget.url);
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prefix = "";
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if (responseHeaders["x-csrf-token"]) {
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prefix = udmpPrefix;
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}
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cache.put(prefixCacheKey, prefix);
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}
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widget.prefix = prefix;
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const { endpoint } = req.query;
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const url = new URL(formatApiCall(api, { endpoint, ...widget }));
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const params = { method: "GET", headers: {} };
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setCookieHeader(url, params);
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[status, contentType, data, responseHeaders] = await httpProxy(url, params);
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if (status === 401) {
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logger.debug("Unifi isn't logged in or rejected the reqeust, attempting login.");
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[status, contentType, data, responseHeaders] = await login(widget);
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if (status !== 200) {
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logger.error("HTTP %d logging in to Unifi. Data: %s", status, data);
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return res.status(status).end(data);
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}
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const json = JSON.parse(data.toString());
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if (!(json?.meta?.rc === "ok" || json.login_time)) {
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logger.error("Error logging in to Unifi: Data: %s", data);
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return res.status(401).end(data);
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}
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addCookieToJar(url, responseHeaders);
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setCookieHeader(url, params);
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logger.debug("Retrying Unifi request after login.");
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[status, contentType, data, responseHeaders] = await httpProxy(url, params);
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}
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if (status !== 200) {
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logger.error("HTTP %d getting data from Unifi endpoint %s. Data: %s", status, url.href, data);
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}
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if (contentType) res.setHeader("Content-Type", contentType);
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return res.status(status).send(data);
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}
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