1603706 - Implement work round for DirectWrite font cache service sandbox issues

Status: NEW

(Core :: Security: Process Sandboxing, enhancement, P3)

Description

[Bob Owen (:bobowen)]

With many of the next improvements that we want to make to the content sandbox policy, we are going to run into issues with the DirectWrite font cache service.
Full explanation in the chromium code [1].

I have a WIP patch based on chromium's hooking code (on a different machine will upload later).
We want to use our own interception code though, so setting this to depend on bug 1598703.

[1] https://cs.chromium.org/chromium/src/content/child/font_warmup_win.cc?type=cs&sq=package:chromium&g=0&l=370

Comment 1

[Bob Owen (:bobowen)]

Attachment: WIP patch using chromium IAT hooking.

WIP patch with chromium hooking, until bug 1598703 has landed.