On Mon, 2015-09-28 at 22:29 +0200, Stjepan Groš wrote:
> On 28.09.2015 11:48, David Woodhouse wrote:
> > On Mon, 2015-09-07 at 12:05 +0200, Stjepan Groš wrote:
> >> Two colleagues of mine and I started to work on MIF implementation on 
> >> Fedora. In case someone doesn't know, IETF MIF working group (
> >> https://datatracker.ietf.org/wg/mif/charter/) tries to solve the 
> >> problems of a single node having multiple parallel connections to 
> >> different destinations (Internet, VPN, some private networks, etc.).
> > Please ensure you take proxies into account.
> >
> > If my local DHCP server handed me a proxy PAC file, and if I connect to
> > a split-tunnel VPN which *also* provides a proxy PAC file, I expect
> > that requests I make to to the company VPN (within its domain names and
> > IP ranges) to use one proxy configuration, while requests to the
> > Internet at large should use my local proxy.
> >
> 
> If I understand it correctly, PAC information received from DHCP is send
> by NM via DBus, but otherwise not used in any way? So, it is necessary
> to use some tool like proxydriver
> (https://github.com/jimlawton/proxydriver) that will modify system
> settings based on this info?

Yes, NM gets the information from DHCP and exposes it on D-Bus but does
not make any further use of it.  That's up to whatever proxy
implementation you have that wants to process PAC files, at least at
this point.  I think that's the point of libproxy/pacrunner though,
where apps need to say "how must I access http://it.foobar.com"; and the
proxy library consults the list of methods to get there, and returns an
answer like "you must use this proxy" or "just go there directly".  Apps
do need to be smarter here.

Dan

> In any case, this is interesting info because we didn't though of it.
> Namely, if browser is configured to use system proxy settings and it is
> placed within new namespace, then it might happen that wrong proxy is
> used, or global proxy settings are mixed up.
> 
> SG
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