PS: You need to compile with the latest PTLib SVN to enable LUA
scripting.
Jan Willamowius wrote:
> Hi,
>
> the LUA scripting is still highly experimental and the way how LUA
> scripts interface with GnuGk may still change. Thats why I haven't added
> anything to the manual, yet.
>
> The main idea is that you shouldn’t have to worry about keeping another
> process running to make complex routing decisions or destination
> rewrites. Right now the 'lua' policy can do about the same things the
> 'vqueue' and 'sql' policies can do, just more convenient.
>
> With the latest CVS, you can add
>
> [RoutingPolicy]
> default=lua,explicit,internal
>
> [Routing::Lua]
> ;Script=destAlias=string.gsub(calledAlias, "#", "*")
> ;Script=destAlias=calledAlias;destAlias=string.gsub(destAlias, "#", "*")
> ScriptFile=myscript.lua
>
> The current interface between LUA and GnuGk is that the script gets
> access to a number of global symbols, like "calledAlias" and writes the
> new destination to "destAlias" and GnuGk will treat this the same as a
> RouteToAlias. What you do in the LUA script to make the transformation
> is all up to you.
> There are a few more symbols you can use. See Routing.cxx.
>
> If somebody tries this, please give me feedback how you like the
> interface. I'm considering to move away from the lists of symbols maybe
> towards functions GetProperty("calledAlias") and
> SetProperty("destAlias", "new value") or even something completely
> different.
>
> It would also be cool to have this kind of scripting ability for CLI
> rewriting...
>
> Regards,
> Jan
>
> --
> Jan Willamowius, Founder of the GNU Gatekeeper Project
> EMail : jan@xxxxxxxxxxxxxx
> Website: http://www.gnugk.org
> Support: http://www.willamowius.com/gnugk-support.html
>
>
> Robert Kulagowski wrote:
> > On Tue, Feb 7, 2012 at 2:16 PM, Robert Kulagowski <rkulagow@xxxxxxxxx> wrote:
> > > Any pointers on how to use lua to do things?
> >
> > To expand on this, I'm wondering if Lua is going to assist me.
> >
> > I have implemented a "flat" dialplan in my company. Endpoints
> > register to the GnuGK using countrycode-ISDN-number, so in the U.S.
> > they're registered as 13125678901, in the UK they're registered as
> > 442072987654, etc.
> >
> > The issue I run into is that users are used to dialing international
> > escape codes, even when they don't need them, so a user in the U.S.
> > may dial 011442072987654 to reach an internal system.
> >
> > To avoid unnecessary ISDN charges, I wrote a vqueue perl script that's
> > triggered on 011, 00, 0011 which are the international escape codes
> > that I see worldwide.
> >
> > The script takes off the escape code, then does a lookup of the number
> > that remains, and checks if that number maps to an internal alias.
> >
> > it then has logic that does this:
> >
> > rejectRoute is true when we don't want the endpoint to use one of the
> > ISDN gateways. isAlias is true when we've mapped a dialed ISDN number
> > to an internal H323-name.
> >
> > if ( !$rejectRoute ) {
> > if ($isAlias) {
> > print "destination alias is $destinationAlias and
> > destinationIP is $dialedDestination\n";
> > print "routetoalias $destinationAlias"." $EP_ID $CRV\n";
> > print $sock "routetoalias $destinationAlias"." $EP_ID $CRV\n";
> > $sock->getline();
> > $isAlias = false;
> > }
> > else {
> > print "routetogateway $destinationAlias $destinationIP
> > $EP_ID $CRV\n";
> > print $sock "routetogateway $destinationAlias
> > $destinationIP $EP_ID $CRV\n";
> > $sock->getline();
> > }
> > }
> > else #route was rejected, so EP should use its native ISDN
> > {
> > $rejectRoute = false;
> > print "Rejecting route\n";
> > print $sock "routereject $EP_ID $CRV\n";
> > $sock->getline();
> > }
> > }
> > }
> >
> > Would Lua allow more flexibility in how numbers are manipulated and
> > rewritten prior to a final routing decision being made by GnuGK?
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