NSFW 4chan.org

[BenFenner]

A few weeks back I've noticed the frames version of 4chan not working at all.

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https://4chan.org/frames

It displays a white frame on the left, and a white frame on the right, both about equal width.
Viewing the source shows the content is missing, and likely a JS fill problem. The console shows no JS errors (no errors of any kind actually).

https://i.imgur.com/utineYr.png


If I visit https://4chan.org without the frames, the site redirects to the frames site with the same results.


If I visit a board directly without frames https://4chan.org/o (SFW automotive section) then the site seems to work normally (albeit without frames) except many of the thumbnails, when clicked, won't load the larger image, and instead a user-friendly 404 notice is displayed at the top of the screen.

https://i.imgur.com/g8slPid.png

I have confirmed this on multiple machines, multiple OSes, and multiple browsers. The problem exists on browsers with ad blockers installed, subscribed to EasyList. Disabling the ad blocking specifically for the 4chan domain allows the site to work properly.

If you want a specific example:
Ad Blocker Name: ABPrime
Any Lists or Custom Filters: EasyList only, no other filters (custom or otherwise)
List Version: EasyList 2018-06-02
Browser Name: Pale Moon
Browser Version: 27.9.2 (latest production release)
Browser Extensions: ABPrime 1.0.5 (latest)
OS Name: Microsoft Windows
OS Version: 7 Ultimate (64-bit)

Let me know if I can provide any more information.

[smed79]

Can you reproduce the issue in Adblock Plus or uBo ?

PS: You can use a portable version of browser for testing.

[BenFenner]

I've tried with Firefox Portable 60.0.1 and uBlock Origin 1.16.8 and the problem does not present with this setup.
I then replaced ABPrime on my Pale Moon setup with AdBlock Latitude (AdBlock Plus tweaked a little to work with Pale Moon) and still the problem does not present with this setup.

So, I believe now I've narrowed down the issue to the ABPrime plugin. Sorry for the trouble. I will alert the developer on his home forum.
Cheers!

[BenFenner]

Just to tie up this loose end, here's the link to the bug report I submitted for ABPrime: https://github.com/binoc-central/abprime/issues/5

[New Tobin Paradigm]

Greetings, I located the issue.. ABPrime currently isn't very tolerant to unknown kinds of filters and so instead of marking it as Unknown which Adblock Plus and co do these days it tries to read it as best it can and interpreted the filter incorrectly.

For the record, the filter in question in this specific case was:

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||4chan.org^$csp=script-src 'self' * 'unsafe-inline'

I have made a modification to resolve/workaround the issue in ABPrime and have released version 1.0.7.

Sorry you guys have been bothered by this as it is not the fault of the filter list.

[BenFenner]

Thanks for the quick turn-around Tobin, and I can confirm ABPrime 1.0.7 fixes the issue for me! =D
Sorry to the EasyList folks for the clutter, it took me a little bit of work to narrow the problem down to the correct place.

[New Tobin Paradigm]

Did my post get edited?

[smed79]

Did my post get edited?

By me. I have added the link to the change you have made.

Does i have do something wrong?

[clawyf]

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##.center.middlead

This hides the contest banners, which aren't really ads as the name would imply. The images themselves flash on screen for about half a second before they are hidden.

uBlock Origin 1.18.10
Just easylist is enabled
Latest version of Chrome
Windows 10, up to date

[intense]

Where are those "contest banners" ? page link ? screenshot ?

[clawyf]

They're on the top of any board, for example boards.4chan.org/r9k/ or boards.4channel.org/a/. Here's a screenshot of one of the images, with Easylist on it's just not shown.
ScreenShot https://i.imgur.com/olURRbO.png

[intense]

well, so a filter like this would work

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boards.4chan.org,boards.4channel.org#@#.middlead

fixed for ublock origin
https://github.com/uBlockOrigin/uAssets ... d5c4b326cc

[clawyf]

Thank you.