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From: storm@cua.dk (Kim F. Storm)
Cc: emacs-devel@gnu.org
Subject: Re: expressions
Date: 06 Jan 2003 01:49:41 +0100	[thread overview]
Message-ID: <5xwuljje56.fsf@kfs2.cua.dk> (raw)
In-Reply-To: <m3isx3cqwq.fsf@woof.play-bow.org>

Bob Halley <halley@play-bow.org> writes:

> Richard Stallman <rms@gnu.org> writes:
> 
> > This is a useful feature.  I have a security question for the people
> > on emacs-devel who support non-GNU-like platforms.  server.el sets up
> > mode 0700 for the socket.  Is that sufficient security, on all
> > platforms, to make it safe to install this feature?
> 
> No, it is not safe.  On Solaris, at least as recent as Solaris 8, the
> file permissions on UNIX domain sockets are totally ignored.  This may
> be true on other platforms as well, though many platforms "do the
> right thing" and check file permissions.

Currently, server.el places the socket in /tmp/esrv<UID>-<HOST>

I've always wondered why the socket wasn't placed in $HOME.

> 
> The standard way of dealing with this portably is to create a
> directory for the socket filename to live in, and control access via
> permissions on the directory.


Maybe we should create a directory "~/.esrv" (if it doesn't exist),
check that it is owned by the current user (fail to start server if
not), make it 700, and then create the server socket (e.g. named
`server') in that directory.

-- 
Kim F. Storm <storm@cua.dk> http://www.cua.dk

  reply	other threads:[~2003-01-06  0:49 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-01-02 20:48 Suggested enhancement: allow emacsclient to send arbitrary LISP expressions tytso
2003-01-05 18:34 ` expressions Richard Stallman
2003-01-05 19:55   ` expressions Bob Halley
2003-01-06  0:49     ` Kim F. Storm [this message]
2003-01-06  1:55       ` expressions Bob Halley
2003-01-06 20:06         ` expressions chad
2003-01-06 20:32           ` expressions Bob Halley
2003-01-07 10:11             ` expressions Kim F. Storm
2003-01-07 19:23               ` expressions Luc Teirlinck
2003-01-11 19:48               ` expressions Stefan Monnier
2003-01-07 10:14       ` expressions Kai Großjohann
2003-01-06 17:13     ` expressions Richard Stallman
2003-01-06 20:37       ` expressions Bob Halley
2003-01-08 21:00       ` expressions Andreas Schwab
2003-01-07 11:53     ` expressions Theodore Ts'o
2003-01-08  8:00       ` expressions Richard Stallman
2003-01-11 19:47       ` expressions Stefan Monnier
2003-01-08 13:50 ` Suggested enhancement: allow emacsclient to send arbitrary LISP expressions Kim F. Storm
2003-01-09 23:13   ` Richard Stallman
2003-01-13 21:08     ` Theodore Ts'o
2003-01-14 18:55       ` Richard Stallman

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