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103 lines
3.8 KiB
103 lines
3.8 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, service) {
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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=${sessionId}`,
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method: 'POST',
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headers: {
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'Content-Type': 'application/x-www-form-urlencoded',
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},
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};
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// see https://github.com/gethomepage/homepage/issues/517
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const isNg = cache.get(`${isNgCacheKey}.${service}`);
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if (isNg && !params) {
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delete options.body;
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options.headers.Cookie = cache.get(`${sessionCacheKey}.${service}`);
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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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let returnData;
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try {
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returnData = JSON.parse(Buffer.from(data).toString());
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} catch(e) {
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logger.error(`Error logging into pyload API: ${JSON.stringify(data)}`);
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returnData = data;
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}
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return [status, returnData, responseHeaders];
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}
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async function login(loginUrl, service, username, password = '') {
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const [status, sessionId, responseHeaders] = await fetchFromPyloadAPI(loginUrl, null, { username, password }, service);
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// this API actually returns status 200 even on login failure
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if (status !== 200 || sessionId === false) {
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logger.error(`HTTP ${status} logging into Pyload API, returned: ${JSON.stringify(sessionId)}`);
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} else if (responseHeaders['set-cookie']?.join().includes('pyload_session')) {
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// Support pyload-ng, see https://github.com/gethomepage/homepage/issues/517
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cache.put(`${isNgCacheKey}.${service}`, true);
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const sessionCookie = responseHeaders['set-cookie'][0];
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cache.put(`${sessionCacheKey}.${service}`, sessionCookie, 60 * 60 * 23 * 1000); // cache for 23h
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} else {
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cache.put(`${sessionCacheKey}.${service}`, sessionId);
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}
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return sessionId;
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}
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export default async function pyloadProxyHandler(req, res) {
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const { group, service, endpoint } = req.query;
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try {
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if (group && service) {
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const widget = await getServiceWidget(group, service);
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if (widget) {
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const url = new URL(formatApiCall(widgets[widget.type].api, { endpoint, ...widget }));
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const loginUrl = `${widget.url}/api/login`;
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let sessionId = cache.get(`${sessionCacheKey}.${service}`) ?? await login(loginUrl, service, widget.username, widget.password);
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let [status, data] = await fetchFromPyloadAPI(url, sessionId, null, service);
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if (status === 403 || status === 401) {
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logger.info('Failed to retrieve data from Pyload API, trying to login again...');
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cache.del(`${sessionCacheKey}.${service}`);
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sessionId = await login(loginUrl, service, widget.username, widget.password);
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[status, data] = await fetchFromPyloadAPI(url, sessionId, null, service);
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}
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if (data?.error || status !== 200) {
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try {
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return res.status(status).send({error: {message: "HTTP error communicating with Pyload API", data: Buffer.from(data).toString()}});
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} catch (e) {
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return res.status(status).send({error: {message: "HTTP error communicating with Pyload API", data}});
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}
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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({error: {message: `Error communicating with Pyload API: ${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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