Create a gist now

Instantly share code, notes, and snippets.

What would you like to do?
How to get raw battery info (mAh remaining, etc.) from iOS using private APIs. For internal testing only, NOT APP STORE DISTRIBUTION!
#import <Foundation/Foundation.h>
#include <dlfcn.h>
NSDictionary *FCPrivateBatteryStatus()
{
static mach_port_t *s_kIOMasterPortDefault;
static kern_return_t (*s_IORegistryEntryCreateCFProperties)(mach_port_t entry, CFMutableDictionaryRef *properties, CFAllocatorRef allocator, UInt32 options);
static mach_port_t (*s_IOServiceGetMatchingService)(mach_port_t masterPort, CFDictionaryRef matching CF_RELEASES_ARGUMENT);
static CFMutableDictionaryRef (*s_IOServiceMatching)(const char *name);
static CFMutableDictionaryRef g_powerSourceService;
static mach_port_t g_platformExpertDevice;
static BOOL foundSymbols = NO;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
void* handle = dlopen("/System/Library/Frameworks/IOKit.framework/Versions/A/IOKit", RTLD_LAZY);
s_IORegistryEntryCreateCFProperties = dlsym(handle, "IORegistryEntryCreateCFProperties");
s_kIOMasterPortDefault = dlsym(handle, "kIOMasterPortDefault");
s_IOServiceMatching = dlsym(handle, "IOServiceMatching");
s_IOServiceGetMatchingService = dlsym(handle, "IOServiceGetMatchingService");
if (s_IORegistryEntryCreateCFProperties && s_IOServiceMatching && s_IOServiceGetMatchingService) {
g_powerSourceService = s_IOServiceMatching("IOPMPowerSource");
g_platformExpertDevice = s_IOServiceGetMatchingService(*s_kIOMasterPortDefault, g_powerSourceService);
foundSymbols = (g_powerSourceService && g_platformExpertDevice);
}
});
if (! foundSymbols) return nil;
CFMutableDictionaryRef prop = NULL;
s_IORegistryEntryCreateCFProperties(g_platformExpertDevice, &prop, 0, 0);
return prop ? ((NSDictionary *) CFBridgingRelease(prop)) : nil;
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment