1738549 - Firefox prevents clipboard access on manually run code

Status: RESOLVED INVALID

(DevTools :: Console, defect, P3)

Description

[mattia.basaglia]

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:93.0) Gecko/20100101 Firefox/93.0

Steps to reproduce:

• Open the debug console (F12)
• type navigator.clipboard.writeText("foo")

Actual results:

Exception "Uncaught (in promise) DOMException: Clipboard write was blocked due to lack of user activation."

Expected results:

since the code is being written directly by the user blocking the call seems pointless...

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::DOM: Core & HTML' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.

Comment 2

[Andrew McCreight [:mccr8]]

It feels like this might be a developer tools issue. Maybe devtools needs to change how it runs the code? I'm not sure if DOM code has visibility into how the code is being invoked, so I could be wrong.

Comment 3

[Julian Descottes [:jdescottes]]

Nicolas: can you check for existing similar bugs related to features requiring user input.

Comment 4

[Alexandre Poirot [:ochameau]]

It is blocked by this code:
https://searchfox.org/mozilla-central/rev/88cd13997fb0747cdcd78638fc762ff2d75e1fc5/dom/base/nsContentUtils.cpp#6892-6897

May be this code could somehow check if we are being evaluated from the console?
(I have absolutely no clue on how to do that!)

Comment 5

[Nicolas Chevobbe [:nchevobbe]]

Maybe Bug 1743790 could help for that

Comment 6

[Zac Svoboda :zacnomore]

Attachment: clipboard.png

Comment 7

[Zac Svoboda :zacnomore]

Tested in 109.0, issue is resolved.