1493223 - Allow fuzzers to fuzz print preview.

Status: RESOLVED FIXED

(Core :: Layout, enhancement, P3)

Description

[Emilio Cobos Álvarez (:emilio)]

This is the only print preview test we have.

  https://searchfox.org/mozilla-central/rev/0b8ed772d24605d7cb44c1af6d59e4ca023bd5f5/layout/base/tests/chrome/printpreview_helper.xul#26

I'm sure fuzzing is going to reveal fun stuff in this code.

Comment 1

[Emilio Cobos Álvarez (:emilio)]

Tyson, do you know if Fuzzers have access to Cc / Ci? (The XPCOM interfaces and such?)

If so, this is trivial, though the API is somewhat awkward to use:

  https://searchfox.org/mozilla-central/rev/1a4a7745fd4a14402a0de0e9abc040724d4fcf8f/layout/base/tests/chrome/printpreview_helper.xul#26

Otherwise, I can add some sort of fuzzing-only WebIDL API or so, or whatever you think is best really.

Comment 2

[Tyson Smith [:tsmith]]

I believe this is what you you are looking for :)

https://searchfox.org/mozilla-central/source/dom/webidl/FuzzingFunctions.webidl

Adding print preview would be great, assuming it does not popup a blocking dialog or anything like that.

Comment 3

[Emilio Cobos Álvarez (:emilio)]

Attachment: Bug 1493223 - Allow fuzzers to call window.printPreview. r=smaug

It'll open a window / tab that they can then close. This allows fuzzers
to catch crashes in our printing codepaths. Can't wait for the fun to
start.

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/cceee3976ed5
Allow fuzzers to call window.printPreview. r=smaug

Comment 5

[Andreea Pavel [:apavel]]

https://hg.mozilla.org/mozilla-central/rev/cceee3976ed5