153 lines
4.1 KiB
JavaScript
153 lines
4.1 KiB
JavaScript
var xtend = require('xtend');
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var jwt = require('jsonwebtoken');
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var UnauthorizedError = require('./UnauthorizedError');
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function noQsMethod(options) {
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var defaults = { required: true };
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options = xtend(defaults, options);
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return function (socket) {
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var server = this.server || socket.server;
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if (!server.$emit) {
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//then is socket.io 1.0
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var Namespace = Object.getPrototypeOf(server.sockets).constructor;
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if (!~Namespace.events.indexOf('authenticated')) {
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Namespace.events.push('authenticated');
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}
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}
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if(options.required){
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var auth_timeout = setTimeout(function () {
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socket.disconnect('unauthorized');
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}, options.timeout || 5000);
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}
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socket.on('authenticate', function (data) {
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if(options.required){
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clearTimeout(auth_timeout);
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}
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jwt.verify(data.token, options.secret, options, function(err, decoded) {
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// error handler
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var onError = function(err, code) {
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if (err) {
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code = code || 'unknown';
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var error = new UnauthorizedError(code, {
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message: (Object.prototype.toString.call(err) === '[object Object]' && err.message) ? err.message : err
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});
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socket.emit('unauthorized', error, function() {
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socket.disconnect('unauthorized');
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});
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return; // stop logic, socket will be close on next tick
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}
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};
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if (err) {
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return onError(err, 'invalid_token');
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}
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// success handler
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var onSuccess = function(){
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socket.decoded_token = decoded;
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socket.emit('authenticated');
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if (server.$emit) {
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server.$emit('authenticated', socket);
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} else {
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//try getting the current namespace otherwise fallback to all sockets.
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var namespace = (server.nsps && socket.nsp &&
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server.nsps[socket.nsp.name]) ||
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server.sockets;
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// explicit namespace
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namespace.emit('authenticated', socket);
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}
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};
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if(options.additional_auth && typeof options.additional_auth === 'function') {
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options.additional_auth(decoded, onSuccess, onError);
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} else {
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onSuccess();
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}
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});
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});
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};
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}
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function authorize(options, onConnection) {
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if (!options.handshake) {
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return noQsMethod(options);
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}
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var defaults = {
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success: function(data, accept){
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if (data.request) {
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accept();
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} else {
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accept(null, true);
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}
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},
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fail: function(error, data, accept){
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if (data.request) {
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accept(error);
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} else {
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accept(null, false);
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}
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}
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};
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var auth = xtend(defaults, options);
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return function(data, accept){
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var token, error;
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var req = data.request || data;
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var authorization_header = (req.headers || {}).authorization;
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if (authorization_header) {
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var parts = authorization_header.split(' ');
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if (parts.length == 2) {
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var scheme = parts[0],
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credentials = parts[1];
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if (scheme.toLowerCase() === 'bearer') {
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token = credentials;
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}
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} else {
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error = new UnauthorizedError('credentials_bad_format', {
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message: 'Format is Authorization: Bearer [token]'
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});
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return auth.fail(error, data, accept);
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}
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}
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//get the token from query string
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if (req._query && req._query.token) {
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token = req._query.token;
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}
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else if (req.query && req.query.token) {
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token = req.query.token;
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}
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if (!token) {
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error = new UnauthorizedError('credentials_required', {
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message: 'No Authorization header was found'
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});
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return auth.fail(error, data, accept);
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}
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jwt.verify(token, options.secret, options, function(err, decoded) {
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if (err) {
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error = new UnauthorizedError('invalid_token', err);
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return auth.fail(error, data, accept);
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}
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data.decoded_token = decoded;
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auth.success(data, accept);
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});
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};
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}
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exports.authorize = authorize;
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