Mac OS VPN Connection Programmatically - objective-c

Question

I want to create code which will create new connection with L2TP Protocol .
below is my code.
I didn't find any error but code run successfully and create new network but it's not showing data which i passes e.g username.
- (IBAction)connectVPN_Cliced:(NSButton *)sender{
VPNServiceConfig *config = [[VPNServiceConfig alloc]init];
config.username = #"username";
config.password = #"password";
config.endpointPrefix = #"Server IP end prefix";
config.endpointSuffix = #"Server IP end endpointSuffix";
config.sharedSecret = #"sharedkey";
config.name = #"L2TP By Mac Application";
config.endpoint = #"Server IP";
config.type = 1;
[self setupVPN:config];
}
- (AuthorizationRef) getAuth {
AuthorizationRef auth = NULL;
OSStatus status;
status = AuthorizationCreate(NULL, kAuthorizationEmptyEnvironment, [self flags], &auth);
if (status == errAuthorizationSuccess) {
NSLog(#"Successfully obtained Authorization reference");
} else {
NSLog(#"Could not obtain Authorization reference");
exit(101);
}
return auth;
}
- (AuthorizationFlags) flags {
return kAuthorizationFlagDefaults |
kAuthorizationFlagExtendRights |
kAuthorizationFlagInteractionAllowed |
kAuthorizationFlagPreAuthorize;
}
- (void)setupVPN:(VPNServiceConfig *)vpnConfig {
// Obtaining permission to modify network settings
AuthorizationRef auth = [self getAuth];
SCPreferencesRef prefs = SCPreferencesCreateWithAuthorization(kCFAllocatorDefault, CFSTR("macVPN"), NULL, auth);
SCPreferencesUnlock(prefs);
//-------- This is i tried by me to add data but it's not working ------ Start //
SCPreferencesSetValue(prefs, CFSTR("Type"), CFSTR("PPP"));
SCPreferencesSetValue(prefs, CFSTR("SubType"), CFSTR("L2TP"));
SCPreferencesSetValue(prefs, CFSTR("AuthName"), CFSTR("username"));
SCPreferencesSetValue(prefs, CFSTR("AuthPassword"), CFSTR("password"));
SCPreferencesSetValue(prefs, CFSTR("CommRemoteAddress"), CFSTR("server ip"));
NSData *pppData = [#"0000" dataUsingEncoding:NSUTF8StringEncoding];
CFDataRef ref = CFDataCreate(kCFAllocatorDefault, pppData.bytes, pppData.length);
// CFPropertyListFormat
CFPropertyListRef propertyRef = CFPropertyListCreateWithData(kCFAllocatorDefault, ref, kCFPropertyListMutableContainers, nil,nil);
Boolean isValidData = CFPropertyListIsValid(propertyRef, kCFPropertyListXMLFormat_v1_0);
SCPreferencesSetValue(prefs, CFSTR("AuthPassword"), propertyRef);
//-------- This is i tried by me to add data but it's not working ------ End //
// Making sure other process cannot make configuration modifications
// by obtaining a system-wide lock over the system preferences.
if (SCPreferencesLock(prefs, TRUE)) {
NSLog(#"Gained superhuman rights.");
} else {
NSLog(#"Sorry, without superuser privileges I won't be able to add any VPN interfaces.");
return;
}
// If everything will work out fin
[self createService:vpnConfig usingPreferencesRef:prefs];
// We're done, other processes may modify the system configuration again
return;
}
- (void) createService:(VPNServiceConfig *)config usingPreferencesRef:(SCPreferencesRef)prefs {
NSLog(#"Creating new %# Service using %#", config.humanType, config);
// These variables will hold references to our new interfaces
SCNetworkInterfaceRef bottomInterface = SCNetworkInterfaceCreateWithInterface(kSCNetworkInterfaceIPv4,kSCNetworkInterfaceTypeL2TP);
SCNetworkInterfaceRef topInterface = SCNetworkInterfaceCreateWithInterface(bottomInterface, kSCNetworkInterfaceTypePPP);
// Creating a new, fresh VPN service in memory using the interface we already created
SCNetworkServiceRef service = SCNetworkServiceCreate(prefs, topInterface);
// That service is to have a name
SCNetworkServiceSetName(service, (__bridge CFStringRef)config.name);
// And we also woould like to know the internal ID of this service
NSString *serviceID = (__bridge NSString *)(SCNetworkServiceGetServiceID(service));
// It will be used to find the correct passwords in the system keychain
//config.serviceID = serviceID;
[config setServiceID:serviceID];
// Interestingly enough, the interface variables in itself are now worthless
// We used them to create the service and that's it, we cannot modify them any more.
CFRelease(topInterface);
CFRelease(bottomInterface);
topInterface = NULL;
bottomInterface = NULL;
topInterface = SCNetworkServiceGetInterface(service);
// Let's apply all configuration to the PPTP interface
// Specifically, the servername, account username and password
if (SCNetworkInterfaceSetConfiguration(topInterface, config.L2TPIPSecConfig)) {
NSLog(#"Successfully configured PPP interface of service %#", config.name);
} else {
NSLog(#"Error: Could not configure PPP interface for service %#", config.name);
return;
}
if (SCNetworkInterfaceSetExtendedConfiguration(topInterface, kSCEntNetIPSec, config.L2TPIPSecConfig)) {
NSLog(#"Successfully configured IPSec on PPP interface for service %#", config.name);
} else {
NSLog(#"Error: Could not configure PPTP on PPP interface for service %#. %s (Code %i)", config.name, SCErrorString(SCError()), SCError());
//return;
}
NSLog(#"Adding default protocols (DNS, etc.) to service %#...", config.name);
if (!SCNetworkServiceEstablishDefaultConfiguration(service)) {
NSLog(#"Error: Could not establish a default service configuration for %#. %s (Code %i)", config.name, SCErrorString(SCError()), SCError());
return;
}
NSLog(#"Fetching set of all available network services...");
SCNetworkSetRef networkSet = SCNetworkSetCopyCurrent(prefs);
if (!networkSet) {
NSLog(#"Error: Could not fetch current network set when creating %#. %s (Code %i)", config.name, SCErrorString(SCError()), SCError());
return;
}
if (!SCNetworkSetAddService (networkSet, service)) {
if (SCError() == 1005) {
NSLog(#"Skipping VPN Service %# because it already exists.", config.humanType);
return;
} else {
NSLog(#"Error: Could not add new VPN service %# to current network set. %s (Code %i)", config.name, SCErrorString(SCError()), SCError());
return;
}
}
NSLog(#"Fetching IPv4 protocol of service %#....", config.name);
SCNetworkProtocolRef protocol = SCNetworkServiceCopyProtocol(service, kSCNetworkProtocolTypeIPv4);
if (!protocol) {
NSLog(#"Error: Could not fetch IPv4 protocol of %#. %s (Code %i)", config.name, SCErrorString(SCError()), SCError());
return;
}
NSLog(#"Configuring IPv4 protocol of service %#...", config.name);
if (!SCNetworkProtocolSetConfiguration(protocol, config.L2TPIPSecConfig)) {
NSLog(#"Error: Could not configure IPv4 protocol of %#. %s (Code %i)", config.name, SCErrorString(SCError()), SCError());
return;
}
NSLog(#"Commiting all changes including service %#...", config.name);
if (!SCPreferencesCommitChanges(prefs)) {
NSLog(#"Error: Could not commit preferences with service %#. %s (Code %i)", config.name, SCErrorString(SCError()), SCError());
return;
}
NSLog(#"Preparing to add Keychain items for service %#...", config.name);
// The password and the shared secret are not stored directly in the System Preferences .plist file
// Instead we put them into the KeyChain. I know we're creating new items each time you run this application
// But this actually is the same behaviour you get using the official System Preferences Network Pane
[VPNKeychain createPasswordKeyChainItem:config.name forService:serviceID withAccount:config.username andPassword:config.password];
[VPNKeychain createSharedSecretKeyChainItem:config.name forService:serviceID withPassword:config.sharedSecret];
if (!SCPreferencesApplyChanges(prefs)) {
NSLog(#"Error: Could not apply changes with service %#. %s (Code %i)", config.name, SCErrorString(SCError()), SCError());
return;
}
NSLog(#"Successfully created %# VPN %# with ID %#", config.humanType, config.name, serviceID);
return;
}
I tried this :
how to set up a vpn connection programmatically in MAC?
Update :
Code I used to auto connect to vpn server
SCNetworkConnectionRef connetionRef = SCNetworkConnectionCreateWithServiceID(kCFAllocatorDefault, (__bridge CFStringRef)(newServiceId), myCallBack, &callBackContext);
SCNetworkConnectionStart(connetionRef, config.L2TPPPPConfig, FALSE);