From: "Trent W. Buck" <trentbuck@gmail.com>
To: Michael Albinus <michael.albinus@gmx.de>
Cc: emacs-pretest-bug@gnu.org, rfrancoise@debian.org
Subject: Re: Tramp 2.0 -> 2.1 migration woes
Date: Mon, 28 Jan 2008 13:30:18 +1100 [thread overview]
Message-ID: <20080128023016.GB3075@Clio.twb.ath.cx> (raw)
In-Reply-To: <87myqrfh8y.fsf@gmx.de>
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On Sun, Jan 27, 2008 at 03:57:49PM +0100, Michael Albinus wrote:
> "Trent W. Buck" <trentbuck@gmail.com> writes:
>
> > The initial hops are no longer shown in the path, nor on the first
> > line of dired buffers. Already I have been VERY confused because
> > a bad tramp-default-proxies-alist resulted in no proxy being used for
> >
> > /sudo:root@leek:/etc
> >
> > ...so that instead of editing leek's /etc as root, I was editing my
> > laptop's /etc as root! Since the path claims that I'm on root@leek, I
> > would have made disastrous changes to my local system if I hadn't
> > noticed that there was no /etc/ssh/sshd_config (because sshd is not
> > installed on my laptop).
>
> The appended patch shall fix it. Could you, please, test?
Yes, that seems to work, but I would extend the whitelist:
- The class A network 127.0.0.0/8
- The unqualified system name (e.g. Clio instead of Clio.twb.ath.cx)
- The comparison should be case-insensitive.
Obviously this whitelist will never be perfect, e.g. if "mail" is a
CNAME alias in on the DNS server for the local host, /sudo:mail: is
meaningful but it would be hard to catch that.
Maybe instead of an error, it should show a warning and continue? I'm
not sure how you could make a warning pop up so that it would be seen
by the user. Obviously `message' wouldn't work, because the echo area
would be reused as tramp continued to sudo'ing to localhost.
I would also change the error message to read
"Host `foo' looks like a remote host, `sudo' can only use the
local host."
> *** /home/albinus/src/tramp/lisp/tramp.el.~2.624.~ 2008-01-26 15:19:11.000000000 +0100
> --- /home/albinus/src/tramp/lisp/tramp.el 2008-01-27 15:43:19.000000000 +0100
> ***************
> *** 6052,6057 ****
> --- 6052,6078 ----
> "Method `%s' is not supported for multi-hops."
> (tramp-file-name-method item)))))
>
> + ;; In case the host name is not used for the remote shell
> + ;; command, the user could be misguided by applying a random
> + ;; hostname.
> + (let* ((v (car target-alist))
> + (method (tramp-file-name-method v))
> + (host (tramp-file-name-host v)))
> + (unless
> + (or
> + ;; There are multi-hops.
> + (cdr target-alist)
> + ;; The host name is used for the remote shell command.
> + (member
> + '("%h") (tramp-get-method-parameter method 'tramp-login-args))
> + ;; The host is local. We cannot use `tramp-local-host-p'
> + ;; here, because it opens a connection as well.
> + (string-match
> + (concat "^" (regexp-opt (list "localhost" (system-name)) t) "$")
> + host))
> + (tramp-error
> + v 'file-error "Wrong hostname `%s' for method `%s'" host method)))
> +
> ;; Result.
> target-alist))
>
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next prev parent reply other threads:[~2008-01-28 2:30 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-27 4:00 Tramp 2.0 -> 2.1 migration woes Trent W. Buck
2008-01-27 13:42 ` Michael Albinus
2008-01-28 2:13 ` Trent W. Buck
2008-01-28 15:32 ` Michael Albinus
2008-01-28 15:57 ` Trent W. Buck
2008-01-28 16:31 ` Michael Albinus
2008-01-29 0:34 ` Trent W. Buck
2008-01-31 11:00 ` Michael Albinus
2008-01-31 14:51 ` Stefan Monnier
2008-01-31 15:46 ` Michael Albinus
2008-01-27 14:57 ` Michael Albinus
2008-01-28 2:30 ` Trent W. Buck [this message]
2008-01-28 14:50 ` Host name for su(do)? (was: Tramp 2.0 -> 2.1 migration woes) Michael Albinus
2008-01-28 15:46 ` Trent W. Buck
2008-01-28 16:10 ` Host name for su(do)? Michael Albinus
2008-01-28 21:47 ` Michael Albinus
2008-01-28 20:54 ` Shell-command is no longer a shell (was: Tramp 2.0 -> 2.1 migration woes) Michael Albinus
2008-01-29 0:43 ` Trent W. Buck
2008-01-29 21:06 ` Shell-command is no longer a shell Michael Albinus
2008-01-31 2:09 ` Trent W. Buck
2008-01-29 20:58 ` sudo -s -H (was: Tramp 2.0 -> 2.1 migration woes) Michael Albinus
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