AW YISS

keyboard_tweak.m

#import <Foundation/Foundation.h>
#import <substrate.h>
#import <objc/objc.h>
#import <objc/runtime.h>

#define Log(format, ...) NSLog(@"mobilevim: %@", [NSString stringWithFormat: format, ## __VA_ARGS__])

// CONVENIENCE SHIT

static void * ivar(id self, const char *name)
{
    Ivar i = class_getInstanceVariable([self class], name);
    return (uint8_t *)self + ivar_getOffset(i);
}

// HOOKS

// -[SpringBoard _revealSpotlight]
void (*orig_revealSpotlight)(id, SEL);
void hook_revealSpotlight(id self, SEL _cmd)
{
    orig_revealSpotlight(self, _cmd);
    Log(@"call stack:\n%@", [NSThread callStackSymbols]);
}

// -[BKHIDEvent _fillWithHIDEvent:descriptor:senderInfo:]
void (*orig_fillWithHIDEvent)(id, SEL, id, id, id);
void hook_fillWithHIDEvent(id self, SEL _cmd, id event, id descriptor, id arg3)
{
    int type = *(int *)ivar(descriptor, "_hidEventType");
    if(type == 3) { // keyboard
        unsigned int usage = *(unsigned int *)ivar(descriptor, "_usage");
        Log(@"KEYBOARD LOL: %u", usage);
    }
    orig_fillWithHIDEvent(self, _cmd, event, descriptor, arg3);
}

MSInitialize {
    Log(@"hooking");
    MSHookMessageEx(objc_getClass("SpringBoard"), @selector(_revealSpotlight), (IMP)&hook_revealSpotlight, (IMP *)&orig_revealSpotlight);
    MSHookMessageEx(objc_getClass("BKHIDEvent"), @selector(_fillWithHIDEvent:descriptor:senderInfo:), (IMP)&hook_fillWithHIDEvent, (IMP *)&orig_fillWithHIDEvent);
}