136 lines
3.9 KiB
JavaScript
136 lines
3.9 KiB
JavaScript
const { ServerModule } = require('../../../server_module');
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const Config = require('../../../config').get;
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const { Errors } = require('../../../enig_error');
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const WebServerPackageName = require('../web').moduleInfo.packageName;
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const _ = require('lodash');
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const User = require('../../../user');
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const { result } = require('lodash');
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const Log = require('../../../logger').log;
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exports.moduleInfo = {
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name: 'WebFinger',
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desc: 'A simple WebFinger Handler',
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author: 'NuSkooler',
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packageName: 'codes.l33t.enigma.web.handler.finger',
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};
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exports.getModule = class WebFingerServerModule extends ServerModule {
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constructor() {
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super();
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}
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init(cb) {
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if (!_.get(Config(), 'contentServers.web.handlers.webFinger.enabled')) {
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return cb(null);
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}
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const { getServer } = require('../../../listening_server');
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// we rely on the web server
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this.webServer = getServer(WebServerPackageName);
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if (!this.webServer || !this.webServer.instance.isEnabled()) {
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return cb(Errors.UnexpectedState('Cannot access web server!'));
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}
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this.webServer.instance.addRoute({
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method: 'GET',
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path: /^\/\.well-known\/webfinger\/?\?/,
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handler: this._webFingerRequestHandler.bind(this),
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});
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return cb(null);
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}
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_webFingerRequestHandler(req, resp) {
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const url = new URL(req.url, `https://${req.headers.host}`);
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const resource = url.searchParams.get('resource');
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if (!resource) {
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return this.webServer.instance.respondWithError(
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resp,
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400,
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'"resource" is required',
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'Missing "resource"'
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);
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}
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this._getUser(resource, resp, (err, user, accountName) => {
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if (err) {
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// |resp| already written to
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return Log.warn({ error: err.message }, `WebFinger failed: ${req.url}`);
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}
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const body = JSON.stringify({
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subject: `acct:${accountName}`,
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links: [this._profilePageLink(user)],
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});
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const headers = {
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'Content-Type': 'application/jrd+json',
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'Content-Length': body.length,
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};
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resp.writeHead(200, headers);
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return resp.end(body);
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});
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}
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_profilePageLink(user) {
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const href = this.webServer.instance.buildUrl(`/wf/@${user.username}`);
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return {
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rel: 'http://webfinger.net/rel/profile-page',
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type: 'text/plain',
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href,
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};
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}
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_getUser(resource, resp, cb) {
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// we only handle "acct:NAME" URIs
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const notFound = () => {
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this.webServer.instance.respondWithError(
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resp,
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404,
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'Resource not found',
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'Resource Not Found'
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);
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};
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const acctIndex = resource.indexOf('acct:', 0);
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if (0 != acctIndex) {
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notFound();
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return cb(Errors.DoesNotExist('"acct:" missing'));
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}
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const accountName = resource.substring(acctIndex + 5);
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const domain = _.get(Config(), 'contentServers.web.domain', 'localhost');
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if (!accountName.endsWith(`@${domain}`)) {
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notFound();
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return cb(Errors.Invalid(`Invalid "acct" value: ${accountName}`));
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}
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const searchQuery = accountName.substring(
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0,
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accountName.length - (domain.length + 1)
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);
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User.getUserIdAndName(searchQuery, (err, userId) => {
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if (err) {
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notFound();
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return cb(err);
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}
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User.getUser(userId, (err, user) => {
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if (err) {
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notFound();
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return cb(err);
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}
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return cb(null, user, accountName);
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});
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});
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}
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};
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