NPAPI:ClearSiteData
Status
(work in progress)
Problem Summary
In short: let the UA's "clear cookies" function also clear Flash's local storage.
More precisely: delegate calls to the UAs "clear privacy information" to plugins, allowing them to clean up their locally stored data as well.
Overview of current UIs
| Type | Firefox | IE | Opera | Safari | Chrome |
|---|---|---|---|---|---|
| Browsing History | yes | yes | yes | yes | yes |
| Download History | yes | yes | yes | yes | yes |
| Form History | yes | yes | ? | yes | yes |
| Search History | yes | ? | ? | ? | ? |
| Cookies | yes | yes | temporary/all | yes | yes |
| Cache | yes | yes | yes | yes | yes |
| Active Logins | yes | yes | "password manager" | yes | yes |
| Site Preferences | yes | ? | ? | ? | ? |
In addition, IE has "InPrivate Filtering Data" (what is this?)
In addition, Opera has "delete password protected pages and data" and "bookmark visited times".
In addition, Safari has "webpage preview images", "website icons" and "top sites"
| Parameters | Firefox | IE | Opera | Safari | Chrome | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Time Range | yes | no | no | no | yes | By Site | yes (context menu in history) | no | no | no | no |
Existing Discussion and Documentation
Mail thread on plugin-futures: https://mail.mozilla.org/private/plugin-futures/2010-January/001150.html
In particular, Lloyd Hilaiel proposed an alternate approach where plugins would store everything in a standard filesystem based layout, so the UA itself can do the clearing. See https://mail.mozilla.org/private/plugin-futures/2010-January/001156.html