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RE: Re: client certificate request cancel: only once

From: Craig McQueen <Craig_McQueen_at_aapl.com.au>
Date: Tue, 29 Jul 2008 12:05:05 +1000


> -----Original Message-----
> From: Stefan Küng [mailto:tortoisesvn_at_gmail.com]
> Sent: Monday, 28 July 2008 4:09 PM
> To: users_at_tortoisesvn.tigris.org
> Subject: Re: client certificate request cancel: only once
> cri10000 wrote:
> > Stefan: that's a seriously flawed assumption...
> >
> > I'm having the same problem. Here's the setup:
> > 1x Apache server
> > 2x vhosts
> > 7x repos (4 on vhost1, 3 on vhost2)
> >
> > It seems to be well documented that, in order for client
> certificates
> > to play nice with TortoiseSVN, Apache must use an 'SSLVerifyClient
> > optional' directive in the main server section (ie, outside of any
> > vhosts sections).
> Where is that documented?


> > This works, but here's the catch: by design, all repos on vhost1
> > should be accessed WITHOUT a client certificate. All repos on vhost2
> > require it... Better yet, the wish list is: SOME repos on vhost1 as
> > well as vhost2 require a certificate, the others are in the clear.
> > Through a browser, I can get this to work fine. But through
> > TortoiseSVN, it doesn't because of the user is constantly bugged by
> > this dialog asking for a certificate. (well... in reality
> it works by
> > pressing 'cancel' every time the dialog comes up, but no
> one in their
> > right mind would consider this a 'usable' or friendly system)
> if all repos on vhost1 don't require a client certificate, then don't
> make apache ask for one!

There are limitations on using SSL with virtual hosts. See for starters:

It sounds as though the original poster is hitting against the limitations of what can be reasonably accomplished with SSL.

> > The flaw in you reasoning is: don't pass the file, don't
> get access...
> > wrong! It must go: don't pass the file, don't get access >>>to those
> > ressources that require it!<<< Doesn't mean the others are off limit
> > by implication. TortoiseSVN seems to think so...
> >
> > Here's the problem: from a server point of view (let's take Apache):
> > 'SSLVerifyClient require' means 'give me a file!', whereas
> > 'SSLVerifyClient optional' means 'got a file?'
> And 'SSLVerifyClient no' means 'I don't need a file'.
> > Now, from Tortoise's point of view, when told, 'gimme a file', it
> > shows the dialog asking the user for one, which is the correct
> > behaviour. But when asked 'got a file?', it keeps on thinking it's
> > mandatory again, and scrambles back to the user for one. That's a
> > significant problem. It should just say 'no'...
> There's no way for a client to know why the server asks for a
> file. If
> the server asks for it, the client has to ask the user for
> it. It's as
> simple as that. If the server later decides that it doesn't
> really need
> the file, the client doesn't know that.
> > To quote the first post in this thread: 'it would be nice if
> > tortoisesvn could remember that it has no certificate.' I think it
> > really should remember.
> If you really want such a feature, you'd have to ask on the
> Subversion
> mailing list for it: authentication is done by the Subversion
> library,
> not TSVN.
> Stefan
> --
> ___
> oo // \\ "De Chelonian Mobile"
> (_,\/ \_/ \ TortoiseSVN
> \ \_/_\_/> The coolest Interface to (Sub)Version Control
> /_/ \_\ http://tortoisesvn.net
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Received on 2008-07-29 04:05:23 CEST

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