CPDistributedMessagingCenter not working ios7 - ios

Question

I am fairly new to jailbreak iOS development and had a question. I am trying to send a message between two processes(MobileSafari to SpringBoard) and am having a problem, the reciever function in SpringBoard is never called! So far in SpringBoard I have this:
-(void)applicationDidFinishLaunching:(id)arg1{
%orig(arg1);
//register for notifications
CPDistributedMessagingCenter *messagingCenter = [CPDistributedMessagingCenter centerNamed:#"com.magnusdevelopment.flow"];
[messagingCenter runServerOnCurrentThread];
[messagingCenter registerForMessageName:#"updateWallpaper" target:self selector:#selector(handleMessageNamed:withUserInfo:)];
[messagingCenter registerForMessageName:#"updateScalingMode" target:self selector:#selector(handleMessageNamed:withUserInfo:)];
[messagingCenter registerForMessageName:#"downloadWallpaper" target:self selector:#selector(handleMessageNamed:withUserInfo:)];
UIAlertView *testAlert = [[UIAlertView alloc] initWithTitle:#"Yo!" message:#"registered" delegate:nil cancelButtonTitle:#"Ok" otherButtonTitles:nil, nil];
[testAlert show];
}
}
%new
-(NSDictionary *)handleMessageNamed:(NSString *)name withUserInfo:(NSDictionary *)userInfo{
UIAlertView *testAlert = [[UIAlertView alloc] initWithTitle:#"Yo!" message:#"2" delegate:nil cancelButtonTitle:#"Ok" otherButtonTitles:nil, nil];
[testAlert show];
if([name isEqualToString:#"updateWallpaper"]){
//get info for wallpaper
NSString *wallpaperImagePath = [userInfo objectForKey:#"WALLPAPER_PATH"];
int option = [[userInfo objectForKey:#"OPTION"] intValue];
BOOL retValue = setWallpaperImage(wallpaperImagePath, option);
//return the dictionary
NSMutableDictionary *replyDict = [[NSMutableDictionary alloc] init];
[replyDict setObject:[NSString stringWithFormat:#"%hhd",retValue] forKey:#"RETURN_VALUE"];
return replyDict;
}else if([name isEqualToString:#"updateScalingMode"]){
//get info from dictionary
int option = [[userInfo objectForKey:#"OPTION"] intValue];
NSString *scalingMode = [userInfo objectForKey:#"SCALING_MODE"];
//set wallpaper scaling mode
setWallpaperScalingMode(scalingMode,option);
}//end if
return nil;
}//end method
and when a button is pressed in MobileSafari I call this code:
NSString *option = [NSString stringWithFormat:#"%i",wallpaperOption];
NSDictionary *infoDict = [NSDictionary dictionaryWithObjectsAndKeys: wallpaperPath, #"WALLPAPER_PATH", option, #"OPTION", nil];
CPDistributedMessagingCenter *messagingCenter = [CPDistributedMessagingCenter centerNamed:#"com.magnusdevelopment.flow"];
[messagingCenter sendMessageAndReceiveReplyName:#"downloadWallpaper" userInfo:infoDict];
UIAlertView *testAlert = [[UIAlertView alloc] initWithTitle:#"Yo!" message:#"sent" delegate:nil cancelButtonTitle:#"Ok" otherButtonTitles:nil, nil];
[testAlert show];
I get the alert "registered" whenever SpringBoard starts up and then when I press the button I get the message "sent". The only thing that isn't called is the function handleMessageNamed:withUserInfo:
Why isn't this working?
Thanks!

Answer 1

Try darwin notifications https://developer.apple.com/library/mac/documentation/corefoundation/Reference/CFNotificationCenterRef/Reference/reference.html It's a public API, shouldn't be hard to find sample code.

Answer 2

If you look at this document entitled "Updating extensions for iOS 7, it looks there are problems using CPDistributedMessagingCenter on iOS 7, but Ryan Petrich has published a library that may help you work around them:
Inter-process communication
CPDistributedMessagingCenter, XPC and other IPC methods built on top
of bootstrap registered mach services don't work; you get deny lookup
in the Xcode console.
Workaround: rpetrich has built a workaround called RocketBootstrap: "One common way processes communicate with each other
on iOS and OS X is through a messaging system called mach ports. Each
port is a channel that can either receive or send messages. There is a
central registration system for these ports called bootstrap, where
ports can be registered and accessed by a service name assigned to
them. Recent versions of iOS restrict which names a process can
access—MobileMail, MobileSafari and App Store apps are only allowed to
access a very specific set of services that come with iOS.
RocketBootstrap adds a secondary lookup service that doesn't restrict
which processes can access which services."