902559 - Stop using data: URIs in Gaia

Status: RESOLVED WONTFIX

(Firefox OS Graveyard :: Gaia, defect)

Description

[Justin Lebar (not reading bugmail)]

We should outlaw data: URIs in Gaia.

data: URIs take 2.7x as much memory as a blob to store the same information.  We also are known to make copies of URIs in the platform -- e.g. bug 897741.

Last time I checked, we stored the Gaia wallpaper and ringtone as data URIs.  There are probably other ones, too.

The first step for someone investigating this bug would be to gather a memory report, using the tools/get_about_memory.py script in the root B2G repository.  Any big data URIs will show up in there.

Comment 1

[Jason Smith [:jsmith]]

FWIW - I know app customizations make heavy use of data URIs to represent each icon for the app. It's probably worthwhile digging into the customization workflow here as a result to see where data URIs are being used.

Comment 2

[Justin Lebar (not reading bugmail)]

Good call.

After we fix the customization flow, perhaps the thing to do is, after we fix Gaia, to set a CSP which disallows data URIs (I think this is possible).  This will break everyone who has a bad customization.

Comment 3

[Eric Rahm [:erahm]]

Closing out old Firefox OS specific memshrink bugs.