Re: MoreSCF 1.1 and Cross-Development
Re: MoreSCF 1.1 and Cross-Development
- Subject: Re: MoreSCF 1.1 and Cross-Development
- From: John Andersson <email@hidden>
- Date: Tue, 23 Oct 2007 18:40:12 +0200
OK. I think I will manage to get it to work. I wont use scutil from
my app, but it's nice to get some hints from the code.
Thanks a lot for your advice!
Regards
/John
23 okt 2007 kl. 15.33 skrev Allan Nathanson:
On Oct 23, 2007, at 8:47 AM, Quinn wrote:
At 13:48 +0200 23/10/07, John Andersson wrote:
By the way, is there any sample code to give me an idea to use
SCNetworkConfiguration in a proper way?
Alas, I don't know of any. I got half way through writing a
sample like this but it's not in a good enough state to give away.
Perhaps Allan has something?
Most of the APIs should be fairly easy to use :
* the preferences contain "sets"
* each "set" can have zero or more "services"
* each "service" can have zero or more "protocols"
* each "protocol" has a configuration dictionary (and the keys/
values are defined in <SystemConfiguration/SCSchemaDefinitions.h>
* each "service" is associated with one "interface"
* each "interface" has a configuration dictionary
* "interface"s may be layered (e.g. a "PPP" interface layered on
top of a "modem")
What has tripped up many developers :
* if you want to make changes to an "interface" configuration,
please make sure that you are using the SCNetworkInterfaceRef
derived from a SCNetworkServiceRef (the interface configuration are
stored per-set/per-service and I need that association to know
where to make the changes).
* you can't create a network service over a "modem" interface. You
need to start with the "modem", layer "PPP" on top (w/
SCNetworkInterfaceCreateWithInterface), and create the service with
the PPP->modem interface.
* watch your usage of CFRetain/CFRelease
If not, you may get some joy from the Leopard Darwin drop.
Speaking of Darwin drops, if you rummage around in the Darwin
source for SCF you'll find some useful code. You can play around
with this by running scutil as shown below:
$ ENABLE_EXPERIMENTAL_SCUTIL_COMMANDS=1 scutil --net
To all :
The "experimental" commands are just that. PLEASE PLEASE PLEASE
don't rely on this command being available in any future release.
If the command sticks around, expect the syntax to change. I'm
saying this now because I most certainly have plans for big changes!
The source for all of this stuff is in the files beginning with
"net" in the following location.
<http://www.opensource.apple.com/darwinsource/Current/
configd-137.3/scutil.tproj/>
[This link requires an APSL <http://www.opensource.apple.com/apsl/>
account.]
Feedback, bug reports, and enhancement requests are always welcome :-)
- Allan
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