Apple

-(NSString *)createOSXVPNConnection:(NSString *)pcfFilename

{

  NSArray *pcfFileContents = [self readFile:pcfFilename];

  CSCOPCFINFO info = [self getPcfVpnDetails:pcfFileContents]; // My own struct in another file...

  NSString *vpnServiceName = [[pcfFilename lastPathComponent] stringByDeletingPathExtension];

  NSString *vpnDescription = @"";

  NSString *vpnGWAddress = @"";

  NSString *vpnGrpName =@"";

  NSString *vpnGrpPwd = @"";

  NSString *vpnUsrName = @"";

  NSString *vpnUsrPwd = @"";

  int szLen = 0;

  szLen = (int)strlen(info.vpnDescription);

  if( szLen != 0 )

    vpnDescription = [NSString stringWithUTF8String:info.vpnDescription];

  szLen = 0;

  szLen = (int)strlen(info.vpnGatewayAddress);

  if( szLen != 0)

    vpnGWAddress = [NSString stringWithUTF8String:info.vpnGatewayAddress];

szLen = 0;

  szLen = (int)strlen(info.vpnGroupUsername);

  if( szLen != 0)

    vpnGrpName = [NSString stringWithUTF8String:info.vpnGroupUsername];

szLen = 0;

  szLen = (int)strlen(info.vpnGroupPasswordPlain);

  if( szLen != 0)

    vpnGrpPwd = [NSString stringWithUTF8String:info.vpnGroupPasswordPlain];

szLen = 0;

  szLen = (int)strlen(info.vpnUsername);

  if( szLen != 0)

    vpnUsrName = [NSString stringWithUTF8String:info.vpnUsername];

szLen = 0;

  szLen = (int)strlen(info.vpnPasswordPlain);

  if( szLen != 0)

    vpnUsrPwd = [NSString stringWithUTF8String:info.vpnPasswordPlain];

  // Authority

  AuthorizationRef auth = NULL;

  AuthorizationFlags rootFlags =

  kAuthorizationFlagDefaults              |

  kAuthorizationFlagExtendRights          |

  kAuthorizationFlagInteractionAllowed    |

  kAuthorizationFlagPreAuthorize;

  AuthorizationCreate(NULL, kAuthorizationEmptyEnvironment,

                      rootFlags, &auth);

  //SCPreferencesRef prefs = SCPreferencesCreate(NULL,(__bridge CFStringRef)vpnServiceName, NULL);

  SCPreferencesRef prefs = SCPreferencesCreateWithAuthorization(NULL,CFSTR("CSCOVPNCFG"), NULL, auth);

  SCPreferencesLock(prefs, TRUE);

  SCNetworkInterfaceRef ipsecIfRef = SCNetworkInterfaceCreateWithInterface (kSCNetworkInterfaceIPv4,
  kSCNetworkInterfaceTypeIPSec);

  SCNetworkInterfaceRef netIfRef = SCNetworkInterfaceGetInterface( ipsecIfRef );

  SCNetworkServiceRef vpnSrvcRef = SCNetworkServiceCreate(prefs, ipsecIfRef);

  SCNetworkServiceSetName(vpnSrvcRef, (__bridge CFStringRef)vpnServiceName);

  CFStringRef keysIPSec[9]  = { NULL, NULL, NULL ,NULL, NULL, NULL ,NULL, NULL, NULL };

  CFStringRef valsIPSec[9]  = { NULL, NULL, NULL ,NULL, NULL, NULL ,NULL, NULL, NULL };

  CFIndex numkeys       = 0;

  keysIPSec[numkeys]    = kSCPropNetIPSecAuthenticationMethod;

  valsIPSec[numkeys++]  = kSCValNetIPSecAuthenticationMethodSharedSecret;

  keysIPSec[numkeys]    = kSCPropNetIPSecLocalIdentifier;

  valsIPSec[numkeys++]  = (__bridge CFStringRef)vpnGrpName;

  keysIPSec[numkeys]    = kSCPropNetIPSecLocalIdentifierType;

  valsIPSec[numkeys++]  = kSCValNetIPSecLocalIdentifierTypeKeyID;

  keysIPSec[numkeys]    = kSCPropNetIPSecRemoteAddress;

  valsIPSec[numkeys++]  = (__bridge CFStringRef)vpnGWAddress;

  keysIPSec[numkeys]    = kSCPropNetIPSecSharedSecret;

  valsIPSec[numkeys++]  = (__bridge CFStringRef)vpnGrpPwd;

  keysIPSec[numkeys]    = kSCPropNetIPSecSharedSecretEncryption;

  valsIPSec[numkeys++]  = kSCValNetIPSecSharedSecretEncryptionKeychain;

  keysIPSec[numkeys]    = kSCPropNetIPSecXAuthName;

  valsIPSec[numkeys++]  = (__bridge CFStringRef)vpnUsrName;

  keysIPSec[numkeys]    = kSCPropNetIPSecXAuthPassword;

  valsIPSec[numkeys++]  = (__bridge CFStringRef)vpnUsrPwd;

  keysIPSec[numkeys]    = kSCPropNetIPSecXAuthPasswordEncryption;

  valsIPSec[numkeys]  = kSCValNetIPSecXAuthPasswordEncryptionPrompt;

  CFDictionaryRef ipsecOptions

        = CFDictionaryCreate

            (NULL, (const void **)&keysIPSec,

            (const void **)&valsIPSec, numkeys,

            &kCFTypeDictionaryKeyCallBacks,

            &kCFTypeDictionaryValueCallBacks);

  BOOL success = SCNetworkInterfaceSetConfiguration (ipsecIfRef, ipsecOptions);

  if (SCNetworkServiceEstablishDefaultConfiguration(vpnSrvcRef))

{

    SCNetworkSetRef set = SCNetworkSetCopyCurrent (prefs);

    BOOL setSuccess = SCNetworkSetAddService (set, vpnSrvcRef);

    if (set && setSuccess)

{

      SCPreferencesCommitChanges(prefs);

      SCPreferencesApplyChanges(prefs);

      SCPreferencesSynchronize(prefs);

}

}

  SCPreferencesUnlock(prefs); 

  CFStringRef srvcID = SCNetworkServiceGetServiceID (vpnSrvcRef);

  return vpnServiceName;

}