ma1 pushed to branch mullvad-browser-115.5.0esr-13.5-1 at The Tor Project / Applications / Mullvad Browser
Commits: 1ff67dd6 by hackademix at 2023-12-04T13:31:29+01:00 fixup! Bug 42019: Empty browser's clipboard on browser shutdown
Bug 42306: Prevent crashes and actually clear the clipboard on Wayland
- - - - -
1 changed file:
- browser/components/BrowserGlue.sys.mjs
Changes:
===================================== browser/components/BrowserGlue.sys.mjs ===================================== @@ -155,12 +155,17 @@ const ClipboardPrivacy = { _globalActivation: false, _isPrivateClipboard: false, _hasher: null, + _shuttingDown: false,
- _computeClipboardHash(win = Services.ww.activeWindow) { + _createTransferable() { const trans = Cc["@mozilla.org/widget/transferable;1"].createInstance( Ci.nsITransferable ); - trans.init(win?.docShell?.QueryInterface(Ci.nsILoadContext) || null); + trans.init(null); + return trans; + }, + _computeClipboardHash() { + const trans = this._createTransferable(); ["text/x-moz-url", "text/plain"].forEach(trans.addDataFlavor); try { Services.clipboard.getData(trans, Ci.nsIClipboard.kGlobalClipboard); @@ -199,16 +204,26 @@ const ClipboardPrivacy = { this._globalActivation = !Services.focus.activeWindow; }, 100); } - const clipboardHash = this._computeClipboardHash(win); - if (clipboardHash !== this._lastClipboardHash) { - this._isPrivateClipboard = - !activation && - (lazy.PrivateBrowsingUtils.permanentPrivateBrowsing || - lazy.PrivateBrowsingUtils.isWindowPrivate(win)); - this._lastClipboardHash = clipboardHash; - console.log( - `Clipboard changed: private ${this._isPrivateClipboard}, hash ${clipboardHash}.` - ); + + const checkClipboardContent = () => { + const clipboardHash = this._computeClipboardHash(); + if (clipboardHash !== this._lastClipboardHash) { + this._isPrivateClipboard = + !activation && + (lazy.PrivateBrowsingUtils.permanentPrivateBrowsing || + lazy.PrivateBrowsingUtils.isWindowPrivate(win)); + this._lastClipboardHash = clipboardHash; + console.log( + `Clipboard changed: private ${this._isPrivateClipboard}, hash ${clipboardHash}.` + ); + } + }; + + if (win.closed) { + checkClipboardContent(); + } else { + // defer clipboard access on DOM events to work-around tor-browser#42306 + lazy.setTimeout(checkClipboardContent, 0); } }; const focusListener = e => @@ -231,18 +246,28 @@ const ClipboardPrivacy = { if ( this._isPrivateClipboard && lazy.PrivateBrowsingUtils.isWindowPrivate(win) && - !( - lazy.PrivateBrowsingUtils.permanentPrivateBrowsing || - Array.from(Services.ww.getWindowEnumerator()).find(w => - lazy.PrivateBrowsingUtils.isWindowPrivate(w) - ) - ) + (this._shuttingDown || + !Array.from(Services.ww.getWindowEnumerator()).find( + w => + lazy.PrivateBrowsingUtils.isWindowPrivate(w) && + // We need to filter out the HIDDEN WebExtensions window, + // which might be private as well but is not UI-relevant. + !w.location.href.startsWith("chrome://extensions/") + )) ) { // no more private windows, empty private content if needed this.emptyPrivate(); } } }); + + lazy.AsyncShutdown.quitApplicationGranted.addBlocker( + "ClipboardPrivacy: removing private data", + () => { + this._shuttingDown = true; + this.emptyPrivate(); + } + ); }, emptyPrivate() { if ( @@ -253,7 +278,20 @@ const ClipboardPrivacy = { ) && this._lastClipboardHash === this._computeClipboardHash() ) { - Services.clipboard.emptyClipboard(Ci.nsIClipboard.kGlobalClipboard); + // nsIClipboard.emptyClipboard() does nothing in Wayland: + // we'll set an empty string as a work-around. + const trans = this._createTransferable(); + const flavor = "text/plain"; + trans.addDataFlavor(flavor); + const emptyString = Cc["@mozilla.org/supports-string;1"].createInstance( + Ci.nsISupportsString + ); + emptyString.data = ""; + trans.setTransferData(flavor, emptyString); + const { clipboard } = Services, + { kGlobalClipboard } = clipboard; + clipboard.setData(trans, null, kGlobalClipboard); + clipboard.emptyClipboard(kGlobalClipboard); this._lastClipboardHash = null; this._isPrivateClipboard = false; console.log("Private clipboard emptied."); @@ -1994,7 +2032,6 @@ BrowserGlue.prototype = { lazy.UpdateListener.reset(); } }, - () => ClipboardPrivacy.emptyPrivate(), // tor-browser#42019 ];
for (let task of tasks) {
View it on GitLab: https://gitlab.torproject.org/tpo/applications/mullvad-browser/-/commit/1ff6...