Pass through Cloudflare challenges

[nolanw]

Cross-post from Awful.apk thread:

I opened an issue a while back about using Awful from countries where Cloudflare always forces captchas (about once every 1-2 hours), specifically these ones:

Did a little more digging and it seems that they set a cookied called "cf_clearance" with some opaque value. That needs to then be passed back on every request, and the user-agent + IP must not change in between, to gain access to the forums for an hour or so.

I think a way to make this work in Awful would be to detect these captcha pages, then show a web view using the same user-agent as awful that lets the user pass it, and then persist and serve the resulting cookies. Never touched Android code before, but might try to give it a shot.
— tazjin

[tazjin]

Note that on iOS this might not be a problem, there's a magic Cloudflare feature for Apple devices only that can skip captchas. I don't have one around to test it though.

[dfsm]

I recently resubbed to a vpn after not having one for a while, so I can test this out this weekend

I did see the iOS magic regarding cloudflare challenges a while back but couldn't test it

https://forums.somethingawful.com/showthread.php?threadid=4012198&perpage=40&pagenumber=1&noseen=1

[nolanw]

Ah good to know. I remembered you posting about Cloudflare awhile back, tazjin, and despite wanting to fix it I didn't see an issue on it. Figured I should make a note of what you'd found.

I appreciate any test results anyone comes up with :)

[tazjin]

I've sort of fixed this in Awful.apk like this: Awful/Awful.apk#777

You might be able to use a similar workaround.