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Adding the ability to register a single script using the "script" attribute at the map property level.

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This commit is contained in:
David Négrier 2021-03-07 21:02:38 +01:00
parent 7d67f55012
commit 6fbf165c91
7 changed files with 202 additions and 3 deletions
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5
front/Dockerfile
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@ -8,6 +8,11 @@ FROM thecodingmachine/nodejs:14-apache
COPY --chown=docker:docker front .
COPY --from=builder --chown=docker:docker /var/www/messages/generated /var/www/html/src/Messages/generated
# Removing the iframe.html file from the final image as this adds a XSS attack.
# iframe.html is only in dev mode to circumvent a limitation
RUN rm dist/iframe.html
RUN yarn install
ENV NODE_ENV=production

17
front/dist/iframe.html vendored Normal file
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@ -0,0 +1,17 @@
<!doctype html>
<html lang="en">
<head>
<script src="/iframe_api.js" ></script>
<script>
// Note: this is a huge XSS flow as we allow anyone to load a Javascript file in our domain.
// This file must ABSOLUTELY be removed from the Docker images/deployments and is only here
// for development purpose (because dynamically generated iframes are not working with
// webpack hot reload due to an issue with rights)
const urlParams = new URLSearchParams(window.location.search);
const scriptUrl = urlParams.get('script');
const script = document.createElement('script');
script.src = scriptUrl;
document.head.append(script);
</script>
</head>
</html>

67
front/src/Api/IframeListener.ts
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@ -2,6 +2,8 @@ import {Subject} from "rxjs";
import {ChatEvent, isChatEvent} from "./Events/ChatEvent";
import {IframeEvent, isIframeEventWrapper} from "./Events/IframeEvent";
import {UserInputChatEvent} from "./Events/UserInputChatEvent";
import * as crypto from "crypto";
import {HtmlUtils} from "../WebRtc/HtmlUtils";
@ -14,6 +16,7 @@ class IframeListener {
public readonly chatStream = this._chatStream.asObservable();
private readonly iframes = new Set<HTMLIFrameElement>();
private readonly scripts = new Map<string, HTMLIFrameElement>();
init() {
window.addEventListener("message", (message) => {
@ -54,6 +57,70 @@ class IframeListener {
this.iframes.delete(iframe);
}
registerScript(scriptUrl: string): void {
console.log('Loading map related script at ', scriptUrl)
if (!process.env.NODE_ENV || process.env.NODE_ENV === 'development') {
// Using external iframe mode (
const iframe = document.createElement('iframe');
iframe.id = this.getIFrameId(scriptUrl);
iframe.style.display = 'none';
iframe.src = '/iframe.html?script='+encodeURIComponent(scriptUrl);
// We are putting a sandbox on this script because it will run in the same domain as the main website.
iframe.sandbox.add('allow-scripts');
iframe.sandbox.add('allow-top-navigation-by-user-activation');
document.body.prepend(iframe);
this.scripts.set(scriptUrl, iframe);
this.registerIframe(iframe);
} else {
// production code
const iframe = document.createElement('iframe');
iframe.id = this.getIFrameId(scriptUrl);
// We are putting a sandbox on this script because it will run in the same domain as the main website.
iframe.sandbox.add('allow-scripts');
iframe.sandbox.add('allow-top-navigation-by-user-activation');
const html = '<!doctype html>\n' +
'\n' +
'<html lang="en">\n' +
'<head>\n' +
'<script src="'+window.location.protocol+'//'+window.location.host+'/iframe_api.js" ></script>\n' +
'<script src="'+scriptUrl+'" ></script>\n' +
'</head>\n' +
'</html>\n';
//iframe.src = "data:text/html;charset=utf-8," + escape(html);
iframe.srcdoc = html;
document.body.prepend(iframe);
this.scripts.set(scriptUrl, iframe);
this.registerIframe(iframe);
}
}
private getIFrameId(scriptUrl: string): string {
return 'script'+crypto.createHash('md5').update(scriptUrl).digest("hex");
}
unregisterScript(scriptUrl: string): void {
const iFrameId = this.getIFrameId(scriptUrl);
const iframe = HtmlUtils.getElementByIdOrFail<HTMLIFrameElement>(iFrameId);
if (!iframe) {
throw new Error('Unknown iframe for script "'+scriptUrl+'"');
}
this.unregisterIframe(iframe);
iframe.remove();
this.scripts.delete(scriptUrl);
}
sendUserInputChat(message: string) {
this.postMessage({
'type': 'userInputChat',

29
front/src/Phaser/Game/GameScene.ts
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@ -72,6 +72,7 @@ import {TextureError} from "../../Exception/TextureError";
import {addLoader} from "../Components/Loader";
import {ErrorSceneName} from "../Reconnecting/ErrorScene";
import {localUserStore} from "../../Connexion/LocalUserStore";
import {iframeListener} from "../../Api/IframeListener";
export interface GameSceneInitInterface {
initPosition: PointInterface|null,
@ -313,6 +314,12 @@ export class GameScene extends ResizableScene implements CenterListener {
// });
// });
}
// Now, let's load the script, if any
const scripts = this.getScriptUrls(this.mapFile);
for (const script of scripts) {
iframeListener.registerScript(script);
}
}
//hook initialisation
@ -744,6 +751,12 @@ export class GameScene extends ResizableScene implements CenterListener {
public cleanupClosingScene(): void {
// stop playing audio, close any open website, stop any open Jitsi
coWebsiteManager.closeCoWebsite();
// Stop the script, if any
const scripts = this.getScriptUrls(this.mapFile);
for (const script of scripts) {
iframeListener.unregisterScript(script);
}
this.stopJitsi();
this.playAudio(undefined);
// We are completely destroying the current scene to avoid using a half-backed instance when coming back to the same map.
@ -829,8 +842,12 @@ export class GameScene extends ResizableScene implements CenterListener {
return this.getProperty(layer, "startLayer") == true;
}
private getProperty(layer: ITiledMapLayer, name: string): string|boolean|number|undefined {
const properties = layer.properties;
private getScriptUrls(map: ITiledMap): string[] {
return (this.getProperties(map, "script") as string[]).map((script) => (new URL(script, this.MapUrlFile)).toString());
}
private getProperty(layer: ITiledMapLayer|ITiledMap, name: string): string|boolean|number|undefined {
const properties: ITiledMapLayerProperty[] = layer.properties;
if (!properties) {
return undefined;
}
@ -841,6 +858,14 @@ export class GameScene extends ResizableScene implements CenterListener {
return obj.value;
}
private getProperties(layer: ITiledMapLayer|ITiledMap, name: string): (string|number|boolean|undefined)[] {
const properties: ITiledMapLayerProperty[] = layer.properties;
if (!properties) {
return [];
}
return properties.filter((property: ITiledMapLayerProperty) => property.name.toLowerCase() === name.toLowerCase()).map((property) => property.value);
}
//todo: push that into the gameManager
private async loadNextGame(exitSceneIdentifier: string){
const {roomId, hash} = Room.getIdFromIdentifier(exitSceneIdentifier, this.MapUrlFile, this.instance);

2
front/src/Phaser/Map/ITiledMap.ts
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@ -14,7 +14,7 @@ export interface ITiledMap {
* Map orientation (orthogonal)
*/
orientation: string;
properties: {[key: string]: string};
properties: ITiledMapLayerProperty[];
/**
* Render order (right-down)

8
maps/tests/script.js Normal file
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@ -0,0 +1,8 @@
console.log('SCRIPT LAUNCHED');
WA.sendChatMessage('Hi, my name is Poly and I repeat what you say!', 'Poly Parrot');
WA.onChatMessage((message => {
console.log('CHAT MESSAGE RECEIVED BY SCRIPT');
WA.sendChatMessage('Poly Parrot says: "'+message+'"', 'Poly Parrot');
}));

77
maps/tests/script_api.json Normal file
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@ -0,0 +1,77 @@
{ "compressionlevel":-1,
"editorsettings":
{
"export":
{
"target":"."
}
},
"height":10,
"infinite":false,
"layers":[
{
"data":[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
"height":10,
"id":1,
"name":"floor",
"opacity":1,
"type":"tilelayer",
"visible":true,
"width":10,
"x":0,
"y":0
},
{
"data":[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
"height":10,
"id":2,
"name":"start",
"opacity":1,
"type":"tilelayer",
"visible":true,
"width":10,
"x":0,
"y":0
},
{
"draworder":"topdown",
"id":3,
"name":"floorLayer",
"objects":[],
"opacity":1,
"type":"objectgroup",
"visible":true,
"x":0,
"y":0
}],
"nextlayerid":6,
"nextobjectid":1,
"orientation":"orthogonal",
"properties":[
{
"name":"script",
"type":"string",
"value":"script.js"
}],
"renderorder":"right-down",
"tiledversion":"1.3.3",
"tileheight":32,
"tilesets":[
{
"columns":11,
"firstgid":1,
"image":"tileset1.png",
"imageheight":352,
"imagewidth":352,
"margin":0,
"name":"tileset1",
"spacing":0,
"tilecount":121,
"tileheight":32,
"tilewidth":32
}],
"tilewidth":32,
"type":"map",
"version":1.2,
"width":10
}