Difference between revisions of "MobileWiFi.framework"

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}}
 
}}
  
'''MobileWiFi''' is the framework that manages WiFi functionality on iOS. It replaces the obsolete '''Apple80211''' framework.
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'''MobileWiFi''' is the framework that manages WiFi functionality on iOS. It powers [[WiFiPicker.servicebundle]], the Wi-Fi settings page and more. Its main purpose is to be a front-end to [[wifid]], which acquires its data directly from the kernel drivers. It replaces the obsolete '''Apple80211''' framework.
 +
 
 +
For examples on how to use this framework, see the [[#Example Code | Example Code]] section of this page.
  
 
* '''Note''': Your program needs the ''com.apple.wifi.manager-access'' entitlement to use '''any''' of the WiFiManager functions.
 
* '''Note''': Your program needs the ''com.apple.wifi.manager-access'' entitlement to use '''any''' of the WiFiManager functions.
 +
 +
= Example Code =
 +
 +
This section includes example code that uses this framework. For more in-depth examples, see the following open-source projects:
 +
* [https://github.com/Cykey/wifi WiFi]
 +
* [https://github.com/Cykey/airscan Airscan]
  
 
== Retrieving a list of known networks ==
 
== Retrieving a list of known networks ==
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CFRelease(networks);
 
CFRelease(networks);
 
</source>
 
</source>
 +
 
== Getting the WiFi signal strength ==
 
== Getting the WiFi signal strength ==
 
<source lang="c">
 
<source lang="c">
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WiFiManagerRef manager = WiFiManagerClientCreate(kCFAllocatorDefault, 0);
 
WiFiManagerRef manager = WiFiManagerClientCreate(kCFAllocatorDefault, 0);
CFArrayRef devices = WiFiManagerClientCopyDevices(_manager);
+
CFArrayRef devices = WiFiManagerClientCopyDevices(manager);
  
 
WiFiDeviceClientRef client = (WiFiDeviceClientRef)CFArrayGetValueAtIndex(devices, 0);
 
WiFiDeviceClientRef client = (WiFiDeviceClientRef)CFArrayGetValueAtIndex(devices, 0);
CFNumberRef RSSI = (CFNumberRef)WiFiDeviceClientCopyProperty(client, kWiFiScaledRSSIKey);
+
CFDictionaryRef data = (CFDictionaryRef)WiFiDeviceClientCopyProperty(client, CFSTR("RSSI"));
 +
CFNumberRef scaled = (CFNumberRef)WiFiDeviceClientCopyProperty(client, kWiFiScaledRSSIKey);
 +
 
 +
CFNumberRef RSSI = (CFNumberRef)CFDictionaryGetValue(data, CFSTR("RSSI_CTL_AGR"));
 +
 
 +
int raw;
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CFNumberGetValue(RSSI, kCFNumberIntType, &raw);
  
 
float strength;
 
float strength;
CFNumberGetValue(RSSI, kCFNumberFloatType, &strength);
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CFNumberGetValue(scaled, kCFNumberFloatType, &strength);
 +
CFRelease(scaled);
  
strength = strength * 100;
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strength *= -1;
  
// Round to the nearest integer.
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// Apple uses -3.0.
strength = ceilf(strength);
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int bars = (int)ceilf(strength * -3.0f);
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bars = MAX(1, MIN(bars, 3));
  
// Convert to a negative number (RSSI is negative).
 
strength = strength * -1;
 
  
NSLog(@"WiFi signal strength: %f dBm", strength);
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printf("WiFi signal strength: %d dBm\n\t Bars: %d\n", raw,  bars);
  
CFRelease(RSSI);
+
CFRelease(data);
 +
CFRelease(scaled);
 
CFRelease(devices);
 
CFRelease(devices);
 
CFRelease(manager);
 
CFRelease(manager);
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<source lang="c">
 
<source lang="c">
 +
 
#include <MobileWiFi.h>
 
#include <MobileWiFi.h>
 
WiFiManagerRef _manager;
 
WiFiDeviceClientRef _client;
 
  
int main()
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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);
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_manager = WiFiManagerClientCreate(kCFAllocatorDefault, 0);
 +
 
 +
CFArrayRef devices = WiFiManagerClientCopyDevices(_manager);
 +
if (!devices) {
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fprintf(stderr, "Couldn't get WiFi devices. Bailing.\n");
 +
exit(EXIT_FAILURE);
 +
}
 +
 
 +
WiFiDeviceClientRef client = (WiFiDeviceClientRef)CFArrayGetValueAtIndex(devices, 0);
 +
 
 +
WiFiManagerClientScheduleWithRunLoop(_manager, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
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WiFiDeviceClientScanAsync(client, (CFDictionaryRef)[NSDictionary dictionary], scan_callback, 0);
  
    CFArrayRef devices = WiFiManagerClientCopyDevices(_manager);
+
CFRelease(devices);
    _client = (WiFiDeviceClientRef)CFArrayGetValueAtIndex(devices, 0);
 
  
    WiFiManagerClientScheduleWithRunLoop(_manager, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
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CFRunLoopRun();
    WiFiDeviceClientScanAsync(_client, (CFDictionaryRef)[NSDictionary dictionary], scanCallback, 0);
 
  
    CFRelease(devices);
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        return 0;
 
}
 
}
  
void scanCallback(WiFiDeviceClientRef device, CFArrayRef results, WiFiErrorRef error, void *token)
+
static void scan_callback(WiFiDeviceClientRef device, CFArrayRef results, CFErrorRef error, void *token)
 
{
 
{
    NSLog(@"Networks: %@", results);
+
NSLog(@"Finished scanning! networks: %@", results);
  
    WiFiManagerClientUnscheduleFromRunLoop(_manager);
+
WiFiManagerClientUnscheduleFromRunLoop(_manager);
    CFRelease(_manager);
+
CFRelease(_manager);
 +
 
 +
CFRunLoopStop(CFRunLoopGetCurrent());
 
}
 
}
 
 
</source>
 
</source>
  

Latest revision as of 05:25, 13 July 2014

MobileWiFi.framework
Private Framework
Availabile 3.0 – present


MobileWiFi is the framework that manages WiFi functionality on iOS. It powers WiFiPicker.servicebundle, the Wi-Fi settings page and more. Its main purpose is to be a front-end to wifid, which acquires its data directly from the kernel drivers. It replaces the obsolete Apple80211 framework.

For examples on how to use this framework, see the Example Code section of this page.

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

Example Code

This section includes example code that uses this framework. For more in-depth examples, see the following open-source projects:

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