621406 - extension registering a stream converter does not work in child process.

Status: RESOLVED WONTFIX

(Firefox for Android Graveyard :: Extension Compatibility, defect)

Description

[Tim Babych]

Attachment: testcase extension

When a streamconverter for mimetype "application/fb2" is registered, it is
not called when a file with this mimetype is downloaded from a website. It works without a problem in Firefox 4 beta 8.

Please check the attached testcase xpi which is a stripped down version of my
extension.

It is not the same as bug 562638, because Content-Disposition is not involved here, test URL is http://clear.com.ua/misc/fb2/1%20-%20Pratchett%20-%20The%20Color%20of%20Magic.fb2

Firefox 4 beta 8 output:

FB2 URI match on http://clear.com.ua/misc/fb2/1%20-%20Pratchett%20-%20The%20Color%20of%20Magic.fb2
FB2 asyncConvertData
FB2 onStartRequest
FB2 onDataAvailable
FB2 onStopRequest

Fennec 4 beta 3 output:
FB2 URI match on http://clear.com.ua/misc/fb2/1%20-%20Pratchett%20-%20The%20Color%20of%20Magic.fb2

Comment 1

[Brad Lassey [:blassey] (use needinfo?)]

what platform are you testing on?

Comment 2

[Tim Babych]

Linux i686 desktop build on Ubuntu 10.10 x64.

Comment 3

[Mark Finkle (:mfinkle) (use needinfo?)]

I am guessing this is an e10s issue

Comment 4

[Alon Zakai (:azakai)]

Hmm, HelperAddDialog.show receives aLauncher with a MIMEInfo that has the proper MIMEType - application/fb2 - but hasDefaultHandler is false. So we show a notification that no application exists to open the content, and an option is given to save it to disk.

I am guessing we shouldn't even get to HelperAppDialog?

Comment 5

[Alon Zakai (:azakai)]

The issue is that the stream converter defined in the plugin, is not seen in the child. More specifically, do_CreateInstance is called on a contract ID for the required conversion, but it fails in Fennec in the child process (but works in Firefox in the single process).

So, we need to remote something here. It isn't obvious to me what. Any thoughts?

Comment 6

[Doug Turner (:dougt)]

Jason, This is an example of an extension registering a stream converter and it failing to work.

I'd love to see this fixed, but I am 2.0- this.

Comment 7

[Benjamin Smedberg]

This is not something that I wish to be fixed in general (extension being able to register contracts in the content process). If there is a specific use case such as stream conversion that we want/need to support, we should design an API for that issue specifically.

Comment 8

[Alon Zakai (:azakai)]

Do we have any thoughts on what kind of API we want to support here?

Comment 9

[BMO Automation]

Closing all opened bug in a graveyard component