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92 lines
3.0 KiB
92 lines
3.0 KiB
import cache from 'memory-cache';
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import getServiceWidget from 'utils/config/service-helpers';
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import { formatApiCall } from 'utils/proxy/api-helpers';
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import widgets from 'widgets/widgets';
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import createLogger from 'utils/logger';
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import { httpProxy } from 'utils/proxy/http';
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const proxyName = 'pyloadProxyHandler';
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const logger = createLogger(proxyName);
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const sessionCacheKey = `${proxyName}__sessionId`;
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const isNgCacheKey = `${proxyName}__isNg`;
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async function fetchFromPyloadAPI(url, sessionId, params) {
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const options = {
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body: params
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? Object.keys(params)
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.map((prop) => `${prop}=${params[prop]}`)
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.join('&')
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: `session=${sessionId}`,
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method: 'POST',
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headers: {
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'Content-Type': 'application/x-www-form-urlencoded',
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},
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};
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// see https://github.com/benphelps/homepage/issues/517
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const isNg = cache.get(isNgCacheKey);
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if (isNg && !params) {
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delete options.body;
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options.headers.Cookie = cache.get(sessionCacheKey);
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}
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// eslint-disable-next-line no-unused-vars
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const [status, contentType, data, responseHeaders] = await httpProxy(url, options);
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return [status, JSON.parse(Buffer.from(data).toString()), responseHeaders];
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}
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async function login(loginUrl, username, password = '') {
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const [status, sessionId, responseHeaders] = await fetchFromPyloadAPI(loginUrl, null, { username, password });
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if (status !== 200) {
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throw new Error(`HTTP error ${status} logging into Pyload API, returned: ${sessionId}`);
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} else {
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// Support pyload-ng, see https://github.com/benphelps/homepage/issues/517
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if (responseHeaders['set-cookie']?.join().includes('pyload_session')) {
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cache.put(isNgCacheKey, true);
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const sessionCookie = responseHeaders['set-cookie'][0];
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cache.put(sessionCacheKey, sessionCookie);
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} else {
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cache.put(sessionCacheKey, sessionId);
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}
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return sessionId;
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}
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}
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export default async function pyloadProxyHandler(req, res) {
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const { group, service, endpoint } = req.query;
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try {
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if (group && service) {
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const widget = await getServiceWidget(group, service);
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if (widget) {
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const url = new URL(formatApiCall(widgets[widget.type].api, { endpoint, ...widget }));
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const loginUrl = `${widget.url}/api/login`;
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let sessionId = cache.get(sessionCacheKey) ?? await login(loginUrl, widget.username, widget.password);
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let [status, data] = await fetchFromPyloadAPI(url, sessionId);
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if (status === 403) {
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logger.debug('Failed to retrieve data from Pyload API, login and re-try');
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cache.del(sessionCacheKey);
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sessionId = await login(loginUrl, widget.username, widget.password);
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[status, data] = await fetchFromPyloadAPI(url, sessionId);
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}
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if (data?.error || status !== 200) {
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return res.status(500).send(Buffer.from(data).toString());
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}
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return res.json(data);
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}
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}
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} catch (e) {
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logger.error(e);
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return res.status(500).send(e.toString());
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}
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return res.status(400).json({ error: 'Invalid proxy service type' });
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}
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