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Made UnlockEvents and FlipNC.

If you are looking for notifications within a process, give NotificationExplorer a look.

Some NIC templates here.

And a repository there: uroboro.github.io/repo.

DISCLAIMER: All code written in this page is to be considered experimental and untested. The author shall not be held responsible or liable for any undesired consequences, including, but not limited to, data loss, property damage, time travel, the singularity, suffered by you as a result of any error in such code. You also agree that you will not use these code snippets for any purposes prohibited by United States law, including, without limitation, the development, design, manufacture, or production of nuclear, missile, or chemical or biological weapons.

Hooking everything

While previously it was possible to provide no filter or an empty one, this is no longer the case, both by Cydia Substrate requiring one and not it being empty. So the solution is based on another requirement that is not very documented: Cydia Substrate will only hook binaries that are linked with Security.framework. The following filter will suffice for this purpose but please reduce the hooking target of your tweak as much as possible.

com.your.tweak.plist NeXTSTEP style { Filter = { Bundles = ( "com.apple.Security" ) } } XML style <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version= "1.0" > <dict> <key> Filter </key> <dict> <key> Bundles </key> <array> <string> com.apple.Security </string> </array> </dict> </dict> </plist>

Late hooking

UI usage

If you need to use UI elements, you have to wait until the application is ready.

Using callbacks

static void notificationCallback ( CFNotificationCenterRef center , void * observer , CFStringRef name , const void * object , CFDictionaryRef userInfo ) { // UI is available, use UIKit here #if BEFORE_IOS_8 UIAlertView * alert = [[ UIAlertView alloc ] initWithTitle : @"Alert" message : @"This is an alert." delegate : nil cancelButtonTitle : @"I'm ok with this" otherButtonTitles : nil ]; [ alert show ]; #else UIAlertController * alert = [ UIAlertController alertControllerWithTitle : @"Alert" message : @"This is an alert." preferredStyle : UIAlertControllerStyleAlert ]; [ alert addAction :[ UIAlertAction actionWithTitle : @"I'm ok with this" style : UIAlertActionStyleDefault handler : ^ ( UIAlertAction * action ) {}]]; [[ UIWindow keyWindow ]. rootViewController presentViewController : alert animated : YES completion : ^ {}]; #endif } static void * observer = NULL ; % ctor { CFNotificationCenterAddObserver ( CFNotificationCenterGetLocalCenter (), & observer , notificationCallback , ( CFStringRef ) UIApplicationDidFinishLaunchingNotification , NULL , CFNotificationSuspensionBehaviorCoalesce ); } // Remove observer upon unloading the dylib % dtor { CFNotificationCenterRemoveObserver ( CFNotificationCenterGetLocalCenter (), & observer , ( CFStringRef ) UIApplicationDidFinishLaunchingNotification , NULL ); }

Using blocks

static id observer ; % ctor { observer = [[ NSNotificationCenter defaultCenter ] addObserverForName : UIApplicationDidFinishLaunchingNotification object : nil queue :[ NSOperationQueue mainQueue ] usingBlock : ^ ( NSNotification * notification ) { // UI is available, use UIKit here #if BEFORE_IOS_8 UIAlertView * alert = [[ UIAlertView alloc ] initWithTitle : @"Alert" message : @"This is an alert." delegate : nil cancelButtonTitle : @"I'm ok with this" otherButtonTitles : nil ]; [ alert show ]; #else UIAlertController * alert = [ UIAlertController alertControllerWithTitle : @"Alert" message : @"This is an alert." preferredStyle : UIAlertControllerStyleAlert ]; [ alert addAction :[ UIAlertAction actionWithTitle : @"I'm ok with this" style : UIAlertActionStyleDefault handler : ^ ( UIAlertAction * action ) {}]]; [[ UIWindow keyWindow ]. rootViewController presentViewController : alert animated : YES completion : ^ {}]; #endif } ]; } // Remove observer upon unloading the dylib % dtor { [[ NSNotificationCenter defaultCenter ] removeObserver : observer ]; }

Dynamic bundle loading

Same applies if a class you want to hook is dynamically loaded by a bundle.

To do: read this and make this procedure more robust.

Using callbacks

static void notificationCallback ( CFNotificationCenterRef center , void * observer , CFStringRef name , const void * object , CFDictionaryRef userInfo ) { if ([(( NSDictionary * ) userInfo )[ NSLoadedClasses ] containsObject : @"targetClass" ]) { // Target class has been loaded } } % ctor { CFNotificationCenterAddObserver ( CFNotificationCenterGetLocalCenter (), NULL , notificationCallback , ( CFStringRef ) NSBundleDidLoadNotification , NULL , CFNotificationSuspensionBehaviorCoalesce ); }

Using blocks

static id observer ; % ctor { observer = [[ NSNotificationCenter defaultCenter ] addObserverForName : NSBundleDidLoadNotification object : nil queue :[ NSOperationQueue mainQueue ] usingBlock : ^ ( NSNotification * notification ) { if ([ notification . userInfo [ NSLoadedClasses ] containsObject : @"targetClass" ]) { // Target class has been loaded } } ]; } //if a destructor existed or you don't need to track the notification anymore % dtor { [[ NSNotificationCenter defaultCenter ] removeObserver : observer ]; }

Other Stuff

Similar Wanted Pages:

Test Zone

Wondering what looks better:

To "wikitable"...

com.your.tweak.plist NeXTSTEP style XML style { entry = { cell = PSSwitchCell ; defaults = "com.your.tweak" ; label = "Your Tweak" ; key = enabled ; default = 1 ; icon = "/Applications/Preferences.app/icon-table@2x.png" ; PostNotification = "com.your.tweak/preferences.changed" ; }; } <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version= "1.0" > <dict> <key> entry </key> <dict> <key> cell </key> <string> PSSwitchCell </string> <key> defaults </key> <string> com.your.tweak </string> <key> label </key> <string> Your Tweak </string> <key> key </key> <string> enabled </string> <key> default </key> <true/> <key> icon </key> <string> /Applications/Preferences.app/icon-table@2x.png </string> <key> PostNotification </key> <string> com.your.tweak/preferences.changed </string> </dict> </dict> </plist>

or not to "wikitable"...

com.your.tweak.plist NeXTSTEP style XML style { entry = { cell = PSSwitchCell ; defaults = "com.your.tweak" ; label = "Your Tweak" ; key = enabled ; default = 1 ; icon = "/Applications/Preferences.app/icon-table@2x.png" ; PostNotification = "com.your.tweak/preferences.changed" ; }; } <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version= "1.0" > <dict> <key> entry </key> <dict> <key> cell </key> <string> PSSwitchCell </string> <key> defaults </key> <string> com.your.tweak </string> <key> label </key> <string> Your Tweak </string> <key> key </key> <string> enabled </string> <key> default </key> <true/> <key> icon </key> <string> /Applications/Preferences.app/icon-table@2x.png </string> <key> PostNotification </key> <string> com.your.tweak/preferences.changed </string> </dict> </dict> </plist>

Maybe collapsing?