Make Permissions-Manager memory-only in TorBrowser

added MikePerryIteration20110515 actualpoints::3 component::firefox patch issues owner::mikeperry parent::2877 points::2 priority::medium resolution::fixed severity::normal status::closed type::defect labels

Trac:
Component: Tor bundles/installation to Tor Browser
Status: new to accepted
Owner: erinn to mikeperry

Trac:
Cc: N/A to lunar@debian.org

For the permissions manager, it lives in extensions/cookie/nsPermissionManager.cpp. THe code that creates the database is in nsPermissionManager::InitDB().

It looks like we can hack it to be a memory only db according to: https://developer.mozilla.org/en/XPCOM_Interface_Reference/mozIStorageService#openSpecialDatabase%28%29

This is probably going to break stuff and require some extensive semi-extensive testing just to see if it is working right..

Trac:
Points: N/A to 2
Keywords: N/A deleted, MikePerryIteration20110515 added

Alright! We've got a working pref 'permissions.memory_only' that causes the permissions DB to be memory-only if set, and I also added a pref observer for it, so that it may be toggled to clear the DB. This appears to work.

Trac:
Status: accepted to closed
Actualpoints: N/A to 3
Resolution: N/A to fixed

Trac:
memory-permissions.diff

Diff against FF4.0.

Trac:
Cc: lunar@debian.org to lunar@debian.org, erinn

Trac:
Reviewer: N/A to N/A
Keywords: N/A deleted, tbb-no-uplift added
Sponsor: N/A to N/A
Severity: N/A to Blocker