Mac OS X 10.10 Reorder preferred networks - objective-c

Question

What is the best way to programmatically change the order of "preferred" networks in OS X? Objective-C preferred...
I can use CoreWLAN to gather the list, and even add to it, but as far as re-ordering I am at a loss. I can create a copy of the preference file, edit it and change the order of precedence, and then use a bash script to write over the existing configuration, but that seems a but messy.
I am aware of the networksetup -addpreferredwirelessnetworkatindex command, but it does not work correctly in 10.10 (works fine for 10.9 systems) - it adds but does not set order properly.
SystemConfiguration framework? Something else?
Thanks!

Answer 1

I was looking for a way to accomplish this after transitioning a user from an open wireless network to a WPA2E network using EAP-TTLS. Since the user connects to the open network first, it remains higher in the Preferred Networks list.
Here is what I came up with:
CWInterface *interface = [CWInterface interfaceWithName:[
[CWInterface interfaceNames] anyObject]
];
CWMutableConfiguration *config = [CWMutableConfiguration
configurationWithConfiguration:interface.configuration
];
NSMutableArray *networks = [NSMutableArray arrayWithArray:
[config.networkProfiles array]
];
//Remove URI_Open (if present) and
//move URI_Secure (if present) to index 0
for (CWNetworkProfile *profile in [networks copy]) {
if ([[profile ssid] isEqualToString:#"URI_Secure"]) {
[networks removeObject:profile];
} else if ([[profile ssid] isEqualToString:#"URI_Open"]) {
CWNetworkProfile *tmp = profile;
[networks removeObject:tmp];
[networks insertObject:tmp atIndex:0];
}
}
config.networkProfiles = [NSOrderedSet orderedSetWithArray:networks];
SFAuthorization *auth = [SFAuthorization authorization];
BOOL authResult = [auth obtainWithRight:"system.preferences"
flags:(
kAuthorizationFlagExtendRights |
kAuthorizationFlagInteractionAllowed |
kAuthorizationFlagPreAuthorize
) error:nil
];
NSError *error = nil;
[interface commitConfiguration:config authorization:auth error:&error];
Some notes/disclaimers:
I do not use OS X regularly. I have one test Mac in my office. It has 10.7.5 installed.
This is the first thing I have ever written in Objective-C. It is the result of a single afternoon; as such it is probably broken and ugly. YMMV.
Question specified 10.10. I used interfaceWithName and interfaceNames, which are deprecated in 10.10. I am not sure what the proper replacement is, but I suspect CWWifiClient.
My approach was based loosely on this ruby program.
I removed error handling for brevity.
I did look into using networksetup or removing the open network right in the .mobileconfig, but neither seemed to work quite right.
Since I just pull the network profile list out into a mutable array, this is easily adaptable to any arbitrary sorting etc.