iPhone get SSID without private library

Question

I have a commercial app that has a completely legitimate reason to see the SSID of the network it is connected to   If it is connected to a Adhoc network for a 3rd party hardware device it needs to be functioning in a different manner than if it is connected to the internet   Everything I ve seen about getting the SSID tells me I have to use Apple80211  which I understand is a private library   I also read that if I use a private library Apple will not approve the app   Am I stuck between an Apple and a hard place  or is there something I m missing here

User · Answer

If you are running iOS 12 you will need to do an extra step   I ve been struggling to make this code work and finally found this on Apple s site    Important To use this function in iOS 12 and later  enable the Access WiFi Information capability for your app in Xcode  When you enable this capability  Xcode automatically adds the Access WiFi Information entitlement to your entitlements file and App ID   https   developer apple com documentation systemconfiguration 1614126-cncopycurrentnetworkinfo

User · Answer

This works for me on the device  not simulator   Make sure you add the systemconfiguration framework    import  lt SystemConfiguration CaptiveNetwork h gt      NSString   currentWifiSSID          Does not work on the simulator      NSString  ssid   nil      NSArray  ifs      bridge transfer id CNCopySupportedInterfaces        for  NSString  ifnam in ifs            NSDictionary  info      bridge transfer id CNCopyCurrentNetworkInfo    bridge CFStringRef ifnam           if  info   SSID                  ssid   info   SSID                        return ssid

User · Answer

UPDATE FOR iOS 10 and up  CNCopySupportedInterfaces is no longer deprecated in iOS 10   API Reference   You need to import SystemConfiguration CaptiveNetwork h and add SystemConfiguration framework to your target s Linked Libraries  under build phases    Here is a code snippet in swift  RikiRiocma s Answer    import Foundation import SystemConfiguration CaptiveNetwork  public class SSID       class func fetchSSIDInfo   - gt  String           var currentSSID              if let interfaces   CNCopySupportedInterfaces                 for i in 0   lt CFArrayGetCount interfaces                    let interfaceName  UnsafePointer lt Void gt    CFArrayGetValueAtIndex interfaces  i                  let rec   unsafeBitCast interfaceName  AnyObject self                  let unsafeInterfaceData   CNCopyCurrentNetworkInfo    rec                    if unsafeInterfaceData    nil                       let interfaceData   unsafeInterfaceData  as Dictionary                      currentSSID   interfaceData  SSID   as  String                                                   return currentSSID            Important  CNCopySupportedInterfaces returns nil on simulator    For Objective-c  see Esad s answer here and below     NSString   GetCurrentWifiHotSpotName           NSString  wifiName   nil      NSArray  ifs      bridge transfer id CNCopySupportedInterfaces        for  NSString  ifnam in ifs            NSDictionary  info      bridge transfer id CNCopyCurrentNetworkInfo    bridge CFStringRef ifnam           if  info   SSID                  wifiName   info   SSID                        return wifiName      UPDATE FOR iOS 9  As of iOS 9 Captive Network is deprecated    source    No longer deprecated in iOS 10  see above    It s recommended you use NEHotspotHelper  source   You will need to email apple at networkextension apple com and request entitlements   source   Sample Code  Not my code  See Pablo A s answer     for NEHotspotNetwork  hotspotNetwork in  NEHotspotHelper supportedNetworkInterfaces         NSString  ssid   hotspotNetwork SSID      NSString  bssid   hotspotNetwork BSSID      BOOL secure   hotspotNetwork secure      BOOL autoJoined   hotspotNetwork autoJoined      double signalStrength   hotspotNetwork signalStrength      Side note  Yup  they deprecated CNCopySupportedInterfaces in iOS 9 and reversed their position in iOS 10  I spoke with an Apple networking engineer and the reversal came after so many people filed Radars and spoke out about the issue on the Apple Developer forums

User · Answer

For iOS 13  As from iOS 13 your app also needs Core Location access in order to use the CNCopyCurrentNetworkInfo function unless it configured the current network or has VPN configurations    So this is what you need  see apple documentation    - Link the CoreLocation framework library  - Add location-services as a UIRequiredDeviceCapabilities Key Value in Info plist  - Add a NSLocationWhenInUseUsageDescription Key Value in Info plist describing why your app requires Core Location  - Add the  Access WiFi Information  entitlement for your app    Now as an Objective-C example  first check if location access has been accepted before reading the network info using CNCopyCurrentNetworkInfo     -  void fetchSSIDInfo       NSString  ssid   NSLocalizedString   not found   nil        if   available iOS 13 0                if   CLLocationManager authorizationStatus     kCLAuthorizationStatusDenied                NSLog   User has explicitly denied authorization for this application  or location services are disabled in Settings               else               CLLocationManager  cllocation     CLLocationManager alloc  init               if   CLLocationManager locationServicesEnabled      CLLocationManager authorizationStatus     kCLAuthorizationStatusNotDetermined                    cllocation requestWhenInUseAuthorization                   usleep 500                   return  self fetchSSIDInfo                                      NSArray  ifs      bridge transfer id CNCopySupportedInterfaces        id info   nil      for  NSString  ifnam in ifs            info      bridge transfer id CNCopyCurrentNetworkInfo                 bridge CFStringRef ifnam            NSDictionary  infoDict    NSDictionary   info          for  NSString  key in infoDict allKeys                if   key isEqualToString   SSID                      ssid    infoDict objectForKey key

User · Answer

See CNCopyCurrentNetworkInfo in CaptiveNetwork  http   developer apple com library ios  documentation SystemConfiguration Reference CaptiveNetworkRef Reference reference html

User · Answer

This code work well in  order to get SSID    import  lt SystemConfiguration CaptiveNetwork h gt    implementation IODAppDelegate   synthesize window    window   -  BOOL application  UIApplication   application didFinishLaunchingWithOptions  NSDictionary   launchOptions     CFArrayRef myArray   CNCopySupportedInterfaces    CFDictionaryRef myDict   CNCopyCurrentNetworkInfo CFArrayGetValueAtIndex myArray  0    NSLog   Connected at     myDict   NSDictionary  myDictionary      bridge transfer NSDictionary  myDict  NSString   BSSID    myDictionary objectForKey   BSSID    NSLog   bssid is     BSSID      Override point for customization after application launch  return YES      And this is the results    Connected at   BSSID   0  SSID    Eqra aOrange   SSIDDATA    lt 45717261 27614f72 616e6765 gt

User · Answer

As of iOS 7 or 8  you can do this  need Entitlement for iOS 12  as shown below     import SystemConfiguration CaptiveNetwork       Returns first non-empty SSID network info dictionary       see CNCopyCurrentNetworkInfo    -  NSDictionary   fetchSSIDInfo       NSArray  interfaceNames   CFBridgingRelease CNCopySupportedInterfaces         NSLog    s  Supported interfaces         func    interfaceNames        NSDictionary  SSIDInfo      for  NSString  interfaceName in interfaceNames            SSIDInfo   CFBridgingRelease              CNCopyCurrentNetworkInfo    bridge CFStringRef interfaceName            NSLog    s       gt         func    interfaceName  SSIDInfo            BOOL isNotEmpty    SSIDInfo count  gt  0           if  isNotEmpty                break                      return SSIDInfo      Example output   2011-03-04 15 32 00 669 ShowSSID 4857 307  - ShowSSIDAppDelegate fetchSSIDInfo   Supported interfaces        en0   2011-03-04 15 32 00 693 ShowSSID 4857 307  - ShowSSIDAppDelegate fetchSSIDInfo   en0   gt        BSSID    ca fe ca fe ca fe       SSID   XXXX      SSIDDATA    lt 01234567 01234567 01234567 gt       Note that no ifs are supported on the simulator  Test on your device   iOS 12  You must enable access wifi info from capabilities      Important   To use this function in iOS 12 and later  enable the Access WiFi Information capability for your app in Xcode  When you enable this capability  Xcode automatically adds the Access WiFi Information entitlement to your entitlements file and App ID  Documentation link   Swift 4 2  func getConnectedWifiInfo   - gt   AnyHashable  Any          if let ifs   CFBridgingRetain  CNCopySupportedInterfaces    as   String           let ifName   ifs first as CFString           let info   CFBridgingRetain  CNCopyCurrentNetworkInfo  ifName    as   AnyHashable  Any             return info           return nil

User · Answer

Here s the short  amp  sweet Swift version     Remember to link and import the Framework   import UIKit import SystemConfiguration CaptiveNetwork   Define the method   func fetchSSIDInfo   - gt  CFDictionary        if let         ifs   CNCopySupportedInterfaces   takeUnretainedValue   as   String           ifName   ifs first          info   CNCopyCurrentNetworkInfo  ifName as CFStringRef                 return info takeUnretainedValue             return nil     Call the method when you need it   if let     ssidInfo   fetchSSIDInfo   as   String AnyObject       ssID   ssidInfo  SSID   as  String       println  SSID    ssID      else       println  SSID not found       As mentioned elsewhere  this only works on your iDevice  When not on WiFi  the method will return nil     hence the optional

User · Answer

Here s the cleaned up ARC version  based on  elsurudo s code   -  id fetchSSIDInfo        NSArray  ifs      bridge transfer NSArray   CNCopySupportedInterfaces         NSLog   Supported interfaces       ifs        NSDictionary  info       for  NSString  ifnam in ifs             info      bridge transfer NSDictionary   CNCopyCurrentNetworkInfo    bridge CFStringRef ifnam            NSLog        gt       ifnam  info            if  info  amp  amp   info count     break                return info

[ios] iPhone get SSID without private library

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