Re: snapshots files timestamps

Tue, 26 Feb 2019 08:37:04 +0200 Mihai Popescu <mihscu@gmail.com>
> Hello,
>
> I am trying since a while to figure out the master site / mirrors
> files timestamps.

Hi Mihai,

Most probably, you need the file named BUILDINFO, see for example these:

https://ftp.openbsd.org/pub/OpenBSD/snapshots/amd64/BUILDINFO
https://ftp.eu.openbsd.org/pub/OpenBSD/snapshots/amd64/BUILDINFO

For scripting of course, replace 'amd64' with "$(arch -s)" or `arch -s`.

Comparing these files between the main and local mirrors, and your local
set of downloaded files could be a start in the direction you are going.

Presumably that's validation of the snapshot build time between mirrors.

Here is the current list of mirrors: https://www.openbsd.org/ftp.html

However, to make sure you got all files, and these files are consistent,
you could use cksum(1) to validate the check sums of the files you have.

https://man.openbsd.org/cksum

The FAQ describes well the process of validation checksums & signatures:

https://www.openbsd.org/faq/faq4.html#Download

And also important, you can re-read INSTALL.$(arch -s) in the files dir:

https://ftp.eu.openbsd.org/pub/OpenBSD/snapshots/amd64/INSTALL.amd64

Kind regards,
Anton Lazarov

> Here is the thing: I can see the timestamps on
> master site, ftp.openbsd.org (let's skip the transfer protocol, like
> ftp, http/https).
> Are these timestamps the original from compilation time? I mean, does
> they show when the files where compiled? Of course, that means that
> timestamps must be preserved at copy action.
> If it is not the case, does those timestamps show the copy time?
> What about mirrors, do they preserve file timestamps at copy time?
> Are the mirrors using the local time, or the UTC time?
>
> Thank you.
>