Hi Jamie, I think the privacy issue with the web cache is of a very different scale from the one you could get from collecting the map data. In the web cache you find visited websites, maybe with a lot of private information about the user. In the cache maps, on the other hand, the only information you can collect is a set of map tiles which might give some hint on where the user lives or has been travelling to, but even that with a lot of guesswork. I do see the issue, however.
There might be a solution, however: could we make give the apps the permission to only execute (traverse) the directories, and not read (enumerate) them? In that way, it would not be possible for an app to get the list of the map tiles, while it would fulfil QtLocation caching needs (we know the file path of the tile we want to load, so we don't need read permissions on the directories). Of course, an app could still try and read all the possible tiles one by one... And if we go for the trusted prompt approach, what would be the action to be performed if the user grants the access? Would creating a hard link to ~/.cache/QtLocation from ~/.cache/<app>/QtLocation work? -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to apparmor-easyprof-ubuntu in Ubuntu. https://bugs.launchpad.net/bugs/1450168 Title: Map data should be shared between apps Status in apparmor-easyprof-ubuntu package in Ubuntu: New Status in qtlocation-opensource-src package in Ubuntu: New Bug description: The libqtgeoservices_osm.so plugin gets loaded in the same process as the application using it, and stores all the map tiles into ~/.cache /<click-package>/ This means that different apps will be unable to share the data, leading to wasted filesystem space. I suggest to modify the plugin so that: 1) Tiles are stored in a common place (and apparmor rules are relaxed to allow read access to that): ~/.cache/libqtgeoservices_osm/, for example 2) Tile downloads are managed by a separate service, started on demand. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apparmor-easyprof-ubuntu/+bug/1450168/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
