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refactor: clean up webFrame implementation to use gin wrappers (#28497)

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* refactor: clean up webFrame implementation to use gin wrappers

The previous implementation of webFrame in the renderer process leaked
sub-frame contexts and global objects across the context boundaries thus
making it possible for apps to either maliciously or accidentally
violate the contextIsolation boundary.

This re-implementation binds all methods in native code directly to
content::RenderFrame instances instead of relying on JS to provide a
"window" with every method request.  This is much more consistent with
the rest of the Electron codebase and is substantially safer.

* chore: un-re-order for ease of review

* chore: pass isolate around instead of ErrorThrower

* chore: fix rebase typo

* chore: remove unused variables
This commit is contained in:
Samuel Attard 2021-04-12 16:35:18 -07:00 • committed by GitHub
parent e775467e9c
commit 6df2680cb6
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8 changed files with 604 additions and 632 deletions
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4
lib/renderer/api/context-bridge.ts
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@ -1,7 +1,7 @@
const { getWebPreference } = process._linkedBinding('electron_renderer_web_frame');
const { mainFrame } = process._linkedBinding('electron_renderer_web_frame');
const binding = process._linkedBinding('electron_renderer_context_bridge');
const contextIsolationEnabled = getWebPreference(window, 'contextIsolation');
const contextIsolationEnabled = mainFrame.getWebPreference('contextIsolation');
const checkContextIsolationEnabled = () => {
if (!contextIsolationEnabled) throw new Error('contextBridge API can only be used when contextIsolation is enabled');