maple3142 · HackerTrans

2 bulan yang laludiscuss

Is this a correct understanding of UB in C? A program P has a set of inputs A that do not trigger UB, and a complementary set of inputs B that do trigger UB. A correct compiler compiles P into an executable P'. For all inputs in A, P' should behave the same as P. However, for any input in B, the is absolutely no requirements on the behavior of P'.

maple3142

4 bulan yang laludiscuss

Will third party apps like bank apps be able to detect whether advanced mode is enabled or not, like how they currently detect if developer options is enabled?

maple3142

6 bulan yang laludiscuss

I think the problem is simply that css is too restricted that you can style a fixed piece of html in any way you want. In practice, achieving some desired layout require changing the html structure. The missing layer would be something that can change the structure of html like js or xslt. In modern frontend development you already have data defined in some json, and html + css combined together is the presentation layer that can't really be separated.

maple3142

6 bulan yang laludiscuss

This wouldn't work if the script is meant to be sourced (to set environment variables) isn't it?

maple3142

6 bulan yang laludiscuss

I think `zsh -l` start a login shell, which does not load zshrc so oh-my-zsh don't get initialized. Try `zsh -ic exit` and it should load zshrc before executing exit.

That said, the time of `zsh -ic exit` isn't really meaningful metric for measuring the performance of an interactive shell. See https://github.com/romkatv/zsh-bench#how-not-to-benchmark for details.

maple3142

6 bulan yang laludiscuss

I don't think it is generally possible to escape from a docker container in default configuration (e.g. `docker run --rm -it alpine:3 sh`) if you have a reasonably update-to-date kernel from your distro. AFAIK a lot of kernel lpe use features like unprivileged user ns and io_uring which is not available in container by default, and truly unprivileged kernel lpe seems to be sufficient rare.

maple3142

8 bulan yang laludiscuss

To be honest, there are two ways to solve the problem of xkcd 2347, either putting efforts into the very small library or just stop depending on it. Both solutions are fine to me and Google apparent just choose the latter one here.

maple3142

12 bulan yang laludiscuss

If being used in a CTF counts, then running latest docker with no extra privilege and non-root user on a reasonably up-to-date kernel meets the definition of secure I think. At least for what I have seen, this kind of infrastructure is pretty common in CTF.

maple3142

2 tahun yang laludiscuss

It really depends on why are you trying to do. It is not easy (or just impossible) to get the same amount of ip with that $5/mo or $10/mo VPN services by renting your own VPS at the same price.

maple3142

7 tahun yang laludiscuss

Not really. Apps in China are mostly don't need Google Play Service, so it is totally up to developer to decide whether use it or not.

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