neuroo / lockmenow

My iPhone 5 lock button is not working properly, so I wrote this app

LockMeNow!

My iPhone 5 lock button is not working properly, so I wrote this application.

Locking the iDevice

Since I want to lock the device, I need to be able to trigger the same functionality iOS does when the lock button is hit. However, Apple does not play nice with its private frameworks. After some research, I found that I need to call the GSEventLockDevice() function which belongs to a private framework GraphicsServices.

The approach I take with this application is to dynamically load the lib and call this function. This is easily done using the dlopen and dlsym functions.

The code looks like this:

char *gsDylib = "/System/Library/PrivateFrameworks/GraphicsServices.framework/GraphicsServices";
void *handle = dlopen(gsDylib, RTLD_NOW);
if (handle) {
  BOOL locked = FALSE;
  void (*_GSEventLockDevice)() = dlsym(handle, "GSEventLockDevice");
  if (_GSEventLockDevice)  {
    _GSEventLockDevice();
    //...
  }
  dlclose(handle);
  //...
}

Limitations

This application can obviously not be accepted (as is) on the Apple Store, and that's mostly why I put it here. If you want to use the application, you will need a developer cert (or a jailbroken device and using the iDevice build toolchain).

Author

You can find me on twitter: @rgaucher

lockmenow's Issues

Needs Jailbrake ?

Does this need jailbroken the device ? I mean is this AppStore safe ? If I use this will APPLE approve ?

iOS 7?

I don't suppose you've found a method for iOS 7 yet???