126 lines
2.9 KiB
JavaScript
126 lines
2.9 KiB
JavaScript
'use strict';
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const AuthApi = require('../auth/auth_api');
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const basicAuth = require('basic-auth');
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module.exports = function authorization (metadataBackend, forceToBeMaster = false) {
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return function authorizationMiddleware (req, res, next) {
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const { user } = res.locals;
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const credentials = getCredentialsFromRequest(req);
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if (!userMatches(credentials, user)) {
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if (req.profiler) {
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req.profiler.done('authorization');
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}
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return next(new Error('permission denied'));
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}
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res.locals.api_key = credentials.apiKeyToken;
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const params = Object.assign({ metadataBackend }, res.locals, req.query, req.body);
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const authApi = new AuthApi(req, params);
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authApi.verifyCredentials(function (err, authorizationLevel) {
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if (req.profiler) {
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req.profiler.done('authorization');
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}
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if (err) {
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return next(err);
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}
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res.locals.authorizationLevel = authorizationLevel;
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if (forceToBeMaster && authorizationLevel !== 'master') {
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return next(new Error('permission denied'));
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}
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res.set('vary', 'Authorization'); //Honor Authorization header when caching.
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next();
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});
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};
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};
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const credentialsGetters = [
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getCredentialsFromHeaderAuthorization,
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getCredentialsFromRequestQueryString,
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getCredentialsFromRequestBody,
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];
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function getCredentialsFromRequest (req) {
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let credentials = null;
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for (var getter of credentialsGetters) {
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credentials = getter(req);
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if (apiKeyTokenFound(credentials)) {
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break;
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}
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}
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return credentials;
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}
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function getCredentialsFromHeaderAuthorization(req) {
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const { pass, name } = basicAuth(req) || {};
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if (pass !== undefined && name !== undefined) {
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return {
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apiKeyToken: pass,
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user: name
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};
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}
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return false;
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}
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function getCredentialsFromRequestQueryString(req) {
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if (req.query.api_key) {
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return {
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apiKeyToken: req.query.api_key
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};
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}
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if (req.query.map_key) {
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return {
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apiKeyToken: req.query.map_key
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};
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}
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return false;
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}
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function getCredentialsFromRequestBody(req) {
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if (req.body && req.body.api_key) {
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return {
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apiKeyToken: req.body.api_key
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};
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}
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if (req.body && req.body.map_key) {
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return {
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apiKeyToken: req.body.map_key
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};
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}
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return false;
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}
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function apiKeyTokenFound(credentials) {
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if (typeof credentials === 'boolean') {
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return credentials;
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}
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if (credentials.apiKeyToken !== undefined) {
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return true;
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}
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return false;
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}
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function userMatches (credentials, user) {
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return !(credentials.user !== undefined && credentials.user !== user);
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}
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