MobileWiFi.framework

MobileWiFi.framework
Private Framework
Availabile	3.0 – present
Headers	[headers.cynder.me]

MobileWiFi is the framework that manages WiFi functionality on iOS. It replaces the obsolete Apple80211 framework.

• Note: Your program needs the com.apple.wifi.manager-access entitlement to use any of the WiFiManager functions.

Retrieving a list of known networks

#include <MobileWiFi.h>

WiFiManagerRef manager = WiFiManagerClientCreate(kCFAllocatorDefault, 0);

CFArrayRef networks = WiFiManagerClientCopyNetworks(manager);

NSLog(@"networks: %@", networks);

CFRelease(manager);
CFRelease(networks);

Getting the WiFi signal strength

#include <math.h>
#include <MobileWiFi.h>

WiFiManagerRef manager = WiFiManagerClientCreate(kCFAllocatorDefault, 0);
CFArrayRef devices = WiFiManagerClientCopyDevices(manager);

WiFiDeviceClientRef client = (WiFiDeviceClientRef)CFArrayGetValueAtIndex(devices, 0);
CFDictionaryRef data = (CFDictionaryRef)WiFiDeviceClientCopyProperty(client, CFSTR("RSSI"));
CFNumberRef scaled = (CFNumberRef)WiFiDeviceClientCopyProperty(client, kWiFiScaledRSSIKey);

CFNumberRef RSSI = (CFNumberRef)CFDictionaryGetValue(data, CFSTR("RSSI_CTL_AGR"));

int raw;
CFNumberGetValue(RSSI, kCFNumberIntType, &raw);

float strength;
CFNumberGetValue(scaled, kCFNumberFloatType, &strength);
CFRelease(scaled);

strength *= -1;

// Apple uses -3.0.
int bars = (int)ceilf(strength * -3.0f);
bars = MAX(1, MIN(bars, 3));


printf("WiFi signal strength: %d dBm\n\t Bars: %d\n", raw,  bars);

CFRelease(data);
CFRelease(scaled);
CFRelease(devices);
CFRelease(manager);

Scanning for nearby networks

#include <MobileWiFi.h>

static WiFiManagerRef _manager;
static void scan_callback(WiFiDeviceClientRef device, CFArrayRef results, CFErrorRef error, void *token);

int main(int argc, char **argv)
{
	_manager = WiFiManagerClientCreate(kCFAllocatorDefault, 0);

	CFArrayRef devices = WiFiManagerClientCopyDevices(_manager);
	if (!devices) {
		fprintf(stderr, "Couldn't get WiFi devices. Bailing.\n");
		exit(EXIT_FAILURE);
	}

	WiFiDeviceClientRef client = (WiFiDeviceClientRef)CFArrayGetValueAtIndex(devices, 0);

	WiFiManagerClientScheduleWithRunLoop(_manager, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
	WiFiDeviceClientScanAsync(client, (CFDictionaryRef)[NSDictionary dictionary], scan_callback, 0);

	CFRelease(devices);

	CFRunLoopRun();

        return 0;
}

static void scan_callback(WiFiDeviceClientRef device, CFArrayRef results, CFErrorRef error, void *token)
{
	NSLog(@"Finished scanning! networks: %@", results);

	WiFiManagerClientUnscheduleFromRunLoop(_manager);
	CFRelease(_manager);

	CFRunLoopStop(CFRunLoopGetCurrent());
}

References

• Header: https://github.com/Cykey/ios-reversed-headers/blob/master/MobileWiFi/MobileWiFi.h