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authortoasted-nutbread <toasted-nutbread@users.noreply.github.com>2020-05-06 19:27:21 -0400
committerGitHub <noreply@github.com>2020-05-06 19:27:21 -0400
commit501281e887fb66b490f90e7593639112b058ab97 (patch)
tree06b48bdd813ec6bf743c4bac7ccafa7f832e7182 /ext/fg/js/popup.js
parentac2f743b76b92c46624cab87cd0f6630256738e4 (diff)
Popup init update (#497)
* Add API function to send a message to a specific frameId in a tab * Update _windowMessageHandlers to support additional info per handler * Remove message token * Add new authorization check * Set up new initialization handler * Update initialization * Remove message token * Replace 'prepare' with 'configure' * Create new prepare function * Change configure guard * Log errors in onMessage * Improve popup initialize function * Clear secret/token in _resetFrame * Remove backend message token * Clear src and srcdoc attributes before loading * Don't treat about:blank unloads as load events
Diffstat (limited to 'ext/fg/js/popup.js')
-rw-r--r--ext/fg/js/popup.js184
1 files changed, 156 insertions, 28 deletions
diff --git a/ext/fg/js/popup.js b/ext/fg/js/popup.js
index f5cb6f77..7db53f0d 100644
--- a/ext/fg/js/popup.js
+++ b/ext/fg/js/popup.js
@@ -17,7 +17,6 @@
/* global
* DOM
- * apiGetMessageToken
* apiInjectStylesheet
* apiOptionsGet
*/
@@ -39,8 +38,9 @@ class Popup {
this._contentScale = 1.0;
this._containerSizeContentScale = null;
this._targetOrigin = chrome.runtime.getURL('/').replace(/\/$/, '');
- this._messageToken = null;
this._previousOptionsContextSource = null;
+ this._containerSecret = null;
+ this._containerToken = null;
this._container = document.createElement('iframe');
this._container.className = 'yomichan-float';
@@ -216,40 +216,154 @@ class Popup {
return injectPromise;
}
+ _initializeFrame(frame, targetOrigin, frameId, setupFrame, timeout=10000) {
+ return new Promise((resolve, reject) => {
+ const tokenMap = new Map();
+ let timer = null;
+ let containerLoadedResolve = null;
+ let containerLoadedReject = null;
+ const containerLoaded = new Promise((resolve2, reject2) => {
+ containerLoadedResolve = resolve2;
+ containerLoadedReject = reject2;
+ });
+
+ const postMessage = (action, params) => {
+ const contentWindow = frame.contentWindow;
+ if (contentWindow === null) { throw new Error('Frame missing content window'); }
+
+ let validOrigin = true;
+ try {
+ validOrigin = (contentWindow.location.origin === targetOrigin);
+ } catch (e) {
+ // NOP
+ }
+ if (!validOrigin) { throw new Error('Unexpected frame origin'); }
+
+ contentWindow.postMessage({action, params}, targetOrigin);
+ };
+
+ const onMessage = (message) => {
+ onMessageInner(message);
+ return false;
+ };
+
+ const onMessageInner = async (message) => {
+ try {
+ if (!isObject(message)) { return; }
+ const {action, params} = message;
+ if (!isObject(params)) { return; }
+ await containerLoaded;
+ if (timer === null) { return; } // Done
+
+ switch (action) {
+ case 'popupPrepared':
+ {
+ const {secret} = params;
+ const token = yomichan.generateId(16);
+ tokenMap.set(secret, token);
+ postMessage('initialize', {secret, token, frameId});
+ }
+ break;
+ case 'popupInitialized':
+ {
+ const {secret, token} = params;
+ const token2 = tokenMap.get(secret);
+ if (typeof token2 !== 'undefined' && token === token2) {
+ cleanup();
+ resolve({secret, token});
+ }
+ }
+ break;
+ }
+ } catch (e) {
+ cleanup();
+ reject(e);
+ }
+ };
+
+ const onLoad = () => {
+ if (containerLoadedResolve === null) {
+ cleanup();
+ reject(new Error('Unexpected load event'));
+ return;
+ }
+
+ if (Popup.isFrameAboutBlank(frame)) {
+ return;
+ }
+
+ containerLoadedResolve();
+ containerLoadedResolve = null;
+ containerLoadedReject = null;
+ };
+
+ const cleanup = () => {
+ if (timer === null) { return; } // Done
+ clearTimeout(timer);
+ timer = null;
+
+ containerLoadedResolve = null;
+ if (containerLoadedReject !== null) {
+ containerLoadedReject(new Error('Terminated'));
+ containerLoadedReject = null;
+ }
+
+ chrome.runtime.onMessage.removeListener(onMessage);
+ frame.removeEventListener('load', onLoad);
+ };
+
+ // Start
+ timer = setTimeout(() => {
+ cleanup();
+ reject(new Error('Timeout'));
+ }, timeout);
+
+ chrome.runtime.onMessage.addListener(onMessage);
+ frame.addEventListener('load', onLoad);
+
+ // Prevent unhandled rejections
+ containerLoaded.catch(() => {}); // NOP
+
+ setupFrame(frame);
+ });
+ }
+
async _createInjectPromise() {
- if (this._messageToken === null) {
- this._messageToken = await apiGetMessageToken();
- }
+ this._injectStyles();
+
+ const {secret, token} = await this._initializeFrame(this._container, this._targetOrigin, this._frameId, (frame) => {
+ frame.removeAttribute('src');
+ frame.removeAttribute('srcdoc');
+ frame.setAttribute('src', chrome.runtime.getURL('/fg/float.html'));
+ this._observeFullscreen(true);
+ this._onFullscreenChanged();
+ });
+ this._containerSecret = secret;
+ this._containerToken = token;
+ // Configure
+ const messageId = yomichan.generateId(16);
const popupPreparedPromise = yomichan.getTemporaryListenerResult(
chrome.runtime.onMessage,
- ({action, params}, {resolve}) => {
+ (message, {resolve}) => {
if (
- action === 'popupPrepareCompleted' &&
- isObject(params) &&
- params.targetPopupId === this._id
+ isObject(message) &&
+ message.action === 'popupConfigured' &&
+ isObject(message.params) &&
+ message.params.messageId === messageId
) {
resolve();
}
}
);
-
- const parentFrameId = (typeof this._frameId === 'number' ? this._frameId : null);
- this._container.setAttribute('src', chrome.runtime.getURL('/fg/float.html'));
- this._container.addEventListener('load', () => {
- this._invokeApi('prepare', {
- popupInfo: {
- id: this._id,
- parentFrameId
- },
- optionsContext: this._optionsContext,
- childrenSupported: this._childrenSupported,
- scale: this._contentScale
- });
+ this._invokeApi('configure', {
+ messageId,
+ frameId: this._frameId,
+ popupId: this._id,
+ optionsContext: this._optionsContext,
+ childrenSupported: this._childrenSupported,
+ scale: this._contentScale
});
- this._observeFullscreen(true);
- this._onFullscreenChanged();
- this._injectStyles();
return popupPreparedPromise;
}
@@ -267,6 +381,8 @@ class Popup {
this._container.removeAttribute('src');
this._container.removeAttribute('srcdoc');
+ this._containerSecret = null;
+ this._containerToken = null;
this._injectPromise = null;
this._injectPromiseComplete = false;
}
@@ -401,11 +517,12 @@ class Popup {
}
_invokeApi(action, params={}) {
- const token = this._messageToken;
+ const secret = this._containerSecret;
+ const token = this._containerToken;
const contentWindow = this._container.contentWindow;
- if (token === null || contentWindow === null) { return; }
+ if (secret === null || token === null || contentWindow === null) { return; }
- contentWindow.postMessage({action, params, token}, this._targetOrigin);
+ contentWindow.postMessage({action, params, secret, token}, this._targetOrigin);
}
_getFrameParentElement() {
@@ -653,6 +770,17 @@ class Popup {
injectedStylesheets.set(id, styleNode);
return styleNode;
}
+
+ static isFrameAboutBlank(frame) {
+ try {
+ const contentDocument = frame.contentDocument;
+ if (contentDocument === null) { return false; }
+ const url = contentDocument.location.href;
+ return /^about:blank(?:[#?]|$)/.test(url);
+ } catch (e) {
+ return false;
+ }
+ }
}
Popup._injectedStylesheets = new Map();