From: Yaroslav <yarikos@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] p9any auth in u9fs: uid value in ticked is ignored
Date: Mon, 10 Oct 2011 17:01:31 +0300 [thread overview]
Message-ID: <CAG3N4d-PT7+aj4ZU5=YpCk9eDnxT76TGLE5uWCqSfsSEfOoGZA@mail.gmail.com> (raw)
In-Reply-To: <CAOw7k5jYgQKeELmybstA_-9JMDxdCJ3wae_Jm4oh9-uxyMAEww@mail.gmail.com>
devmnt always uses up->user for Tauth/Tattach no matter what an auth
protocol would yield (/sys/src/9/port/devmnt.c:281). Stock 9P servers
tolerate this and check Tattach.uname to match Tauth.uname but use
t.cuid or t.suid as the true user identity (unless no auth required).
Anyway, simply trusting Tattach.uname is too naïve - at least for p9any.
> It's true that the server must take account of the result of
> authentication, but although that might not
> mean identity, the results of authentication should be consistent with
> the name presented as uname
> in Tauth/Tattach. In the context of p9auth I think that means that the
> cuid of AuthInfo should match.
next prev parent reply other threads:[~2011-10-10 14:01 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-10 12:07 Yaroslav
2011-10-10 12:39 ` Charles Forsyth
2011-10-10 14:01 ` Yaroslav [this message]
2011-10-10 16:18 ` Charles Forsyth
2011-10-10 20:47 ` Yaroslav
2011-10-10 22:03 ` Charles Forsyth
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