IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 29 May 2016 (all times are UTC)
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| 17:37 | <sbalneav> Huh. Found out a problem with python.
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| 17:38 | In C, when you call setuid or setgid, you simply pass the uidnum or gidnum, and it's done.
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| 17:39 | Which means, you can setuid or gid to a number that doesn't have a corresponding /etc/passwd or /etc/group entry
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| 17:39 | Which is what we want, because we need to setuid to the user for the ssh tunnel before we can bring over the passwd and group entries.
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| 17:40 | however, python insists that uid or gid *have* passwd and group entries.
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| 17:40 | So I'll have to write a python module that doesn't do the check.
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| 17:40 | Nothing is easy, said the elephant to his mistress the mouse.
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| 17:40 | <quinox> you can always use check_call
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| 17:47 | <sbalneav> setuid isn't an external program, it's a library routine.
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| 20:35 | <sbalneav> Ah, the problem's not in setuid
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| 20:35 | it's in nss.
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| 20:35 | ssh won't start without uid and gid entries.
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| 21:16 | <quinox> chown also takes uids - I sometimes have to fix stuff that way when the LDAP and /etc/passwd pick the same ID for different users
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| 21:17 | (useradd and adduser do totally different things... and I usually end up using the wrong one by mistake -_-)
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