source: trip-planner-front/node_modules/sockjs-client/lib/iframe-bootstrap.js@ 59329aa

Last change on this file since 59329aa was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 2.8 KB
Line 
1'use strict';
2
3var urlUtils = require('./utils/url')
4 , eventUtils = require('./utils/event')
5 , JSON3 = require('json3')
6 , FacadeJS = require('./facade')
7 , InfoIframeReceiver = require('./info-iframe-receiver')
8 , iframeUtils = require('./utils/iframe')
9 , loc = require('./location')
10 ;
11
12var debug = function() {};
13if (process.env.NODE_ENV !== 'production') {
14 debug = require('debug')('sockjs-client:iframe-bootstrap');
15}
16
17module.exports = function(SockJS, availableTransports) {
18 var transportMap = {};
19 availableTransports.forEach(function(at) {
20 if (at.facadeTransport) {
21 transportMap[at.facadeTransport.transportName] = at.facadeTransport;
22 }
23 });
24
25 // hard-coded for the info iframe
26 // TODO see if we can make this more dynamic
27 transportMap[InfoIframeReceiver.transportName] = InfoIframeReceiver;
28 var parentOrigin;
29
30 /* eslint-disable camelcase */
31 SockJS.bootstrap_iframe = function() {
32 /* eslint-enable camelcase */
33 var facade;
34 iframeUtils.currentWindowId = loc.hash.slice(1);
35 var onMessage = function(e) {
36 if (e.source !== parent) {
37 return;
38 }
39 if (typeof parentOrigin === 'undefined') {
40 parentOrigin = e.origin;
41 }
42 if (e.origin !== parentOrigin) {
43 return;
44 }
45
46 var iframeMessage;
47 try {
48 iframeMessage = JSON3.parse(e.data);
49 } catch (ignored) {
50 debug('bad json', e.data);
51 return;
52 }
53
54 if (iframeMessage.windowId !== iframeUtils.currentWindowId) {
55 return;
56 }
57 switch (iframeMessage.type) {
58 case 's':
59 var p;
60 try {
61 p = JSON3.parse(iframeMessage.data);
62 } catch (ignored) {
63 debug('bad json', iframeMessage.data);
64 break;
65 }
66 var version = p[0];
67 var transport = p[1];
68 var transUrl = p[2];
69 var baseUrl = p[3];
70 debug(version, transport, transUrl, baseUrl);
71 // change this to semver logic
72 if (version !== SockJS.version) {
73 throw new Error('Incompatible SockJS! Main site uses:' +
74 ' "' + version + '", the iframe:' +
75 ' "' + SockJS.version + '".');
76 }
77
78 if (!urlUtils.isOriginEqual(transUrl, loc.href) ||
79 !urlUtils.isOriginEqual(baseUrl, loc.href)) {
80 throw new Error('Can\'t connect to different domain from within an ' +
81 'iframe. (' + loc.href + ', ' + transUrl + ', ' + baseUrl + ')');
82 }
83 facade = new FacadeJS(new transportMap[transport](transUrl, baseUrl));
84 break;
85 case 'm':
86 facade._send(iframeMessage.data);
87 break;
88 case 'c':
89 if (facade) {
90 facade._close();
91 }
92 facade = null;
93 break;
94 }
95 };
96
97 eventUtils.attachEvent('message', onMessage);
98
99 // Start
100 iframeUtils.postMessage('s');
101 };
102};
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