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@avielg
Created February 3, 2016 14:26
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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;
}
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