1526258 - Implement a fuzzing layer for socket emulation

Status: RESOLVED FIXED

(Core :: Networking, enhancement, P2)

Description

[Christian Holler (:decoder)]

This bug is about implementing a fuzzing layer in NSPR that can emulate socket behavior without actually using a socket or performing network operations. Having that should make it easier to target various network protocols with our fuzzing interface (e.g. using libFuzzer).

Comment 1

[Christian Holler (:decoder)]

Moving over to Networking, because the implementation takes place in netwerk/ entirely according to the latest patch.

Comment 2

[Christian Holler (:decoder)]

Attachment: necko-fuzzing-v2.patch

Dragana, attached is a patch based on Kershaw's patch with the things added you mentioned in the mail thread and modifications to attach it to the fuzzing interface.

This builds fine, however, there is one major problem left: For fuzzing, we need all the "action" to happen within FuzzingRunNetworkHttp (see also the comment at the end of that function). Right now, the request is async and runs in the background even after the function is done. We need this to be sync somehow. Is it possible to do that and how? Thanks!

Comment 3

[Christian Holler (:decoder)]

Attachment: necko-fuzzing-v3.patch

Updated patch, work in progress.

Comment 4

[Christian Holler (:decoder)]

Attachment: necko-fuzzing-v3.patch

Forgot to add a moz.build file

Comment 5

[Christian Holler (:decoder)]

Attachment: Bug 1526258 - Implement fuzzing layer in networking for socket emulation. r?dragana

Comment 6

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/2e755d84d657
Implement fuzzing layer in networking for socket emulation. r=dragana

Comment 7

[Andreea Pavel [:apavel]]

https://hg.mozilla.org/mozilla-central/rev/2e755d84d657