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CoreWLANController.m

//

//  CoreWLANController.m

//  CoreWLANWirelessManager

//  Copyright 2009 Apple, Inc. All rights reserved.

//

//     File: CoreWLANController.m

// Abstract: Controller class for the CoreWLANWirelessManager application.

//  Version: 1.2

//

// Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple

// Inc. ("Apple") in consideration of your agreement to the following

// terms, and your use, installation, modification or redistribution of

// this Apple software constitutes acceptance of these terms.  If you do

// not agree with these terms, please do not use, install, modify or

// redistribute this Apple software.

//

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// license, under Apple's copyrights in this original Apple software (the

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// without specific prior written permission from Apple.  Except as

// expressly stated in this notice, no other rights or licenses, express or

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// The Apple Software is provided by Apple on an "AS IS" basis.  APPLE

// MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION

// THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS

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// Copyright (C) 2011 Apple Inc. All Rights Reserved.

//

#import "CoreWLANController.h"

#import <CoreWLAN/CoreWLAN.h>

#import <SecurityInterface/SFAuthorizationView.h>

@implementation CoreWLANController

@synthesize currentInterface;

@synthesize scanResults;

@synthesize selectedNetwork;

@synthesize joinDialogContext;

- (void)dealloc

    self.currentInterface = nil;

    self.scanResults = nil;

    self.selectedNetwork = nil;

    self.joinDialogContext = NO;

    [super dealloc];

#pragma mark -

#pragma mark Utility Methods

- (NSString*)stringForPHYMode:(NSNumber*)phyMode

    NSString *phyModeStr = nil;

    switch( [phyMode intValue] )

        case kCWPHYMode11A:

            phyModeStr = [NSString stringWithString:@"802.11a"];

            break;

        case kCWPHYMode11B:

            phyModeStr = [NSString stringWithString:@"802.11b"];

            break;

        case kCWPHYMode11G:

            phyModeStr = [NSString stringWithString:@"802.11g"];

            break;

        case kCWPHYMode11N:

            phyModeStr = [NSString stringWithString:@"802.11n"];

            break;

    return phyModeStr;

- (NSString*)stringForSecurityMode:(NSNumber*)securityMode

    NSString *securityModeStr = nil;

    switch( [securityMode intValue] )

        case kCWSecurityModeOpen:

            securityModeStr = [NSString stringWithString:@"Open"];

            break;

        case kCWSecurityModeWEP:

            securityModeStr = [NSString stringWithString:@"WEP"];

            break;

        case kCWSecurityModeWPA_PSK:

            securityModeStr = [NSString stringWithString:@"WPA Personal"];

            break;

        case kCWSecurityModeWPA_Enterprise:

            securityModeStr = [NSString stringWithString:@"WPA Enterprise"];

            break;

        case kCWSecurityModeWPA2_PSK:

            securityModeStr = [NSString stringWithString:@"WPA2 Personal"];

            break;

        case kCWSecurityModeWPA2_Enterprise:

            securityModeStr = [NSString stringWithString:@"WPA2 Enterprise"];

            break;

        case kCWSecurityModeWPS:

            securityModeStr = [NSString stringWithString:@"WiFi Protected Setup"];

            break;

        case kCWSecurityModeDynamicWEP:

            securityModeStr = [NSString stringWithString:@"802.1X WEP"];

            break;

    return securityModeStr;

- (CWSecurityMode)securityModeForString:(NSString*)securityMode

    if( [securityMode isEqualToString:@"WEP"] )

        return kCWSecurityModeWEP;

    else if( [securityMode isEqualToString:@"WPA Personal"] )

        return kCWSecurityModeWPA_PSK;

    else if( [securityMode isEqualToString:@"WPA2 Personal"] )

        return kCWSecurityModeWPA2_PSK;

    else if( [securityMode isEqualToString:@"WPA Enterprise"] )

        return kCWSecurityModeWPA_Enterprise;

    else if( [securityMode isEqualToString:@"WPA2 Enterprise"] )

        return kCWSecurityModeWPA2_Enterprise;

    else if( [securityMode isEqualToString:@"802.1X WEP"] )

        return kCWSecurityModeDynamicWEP;

    else

        return kCWSecurityModeOpen;

- (NSString*)stringForOpMode:(NSNumber*)opMode

    NSString *opModeStr = nil;

    switch( [opMode intValue] )

        case kCWOpModeIBSS:

            opModeStr = [NSString stringWithString:@"IBSS"];

            break;

        case kCWOpModeStation:

            opModeStr = [NSString stringWithString:@"Infrastructure"];

            break;

        case kCWOpModeHostAP:

            opModeStr = [NSString stringWithString:@"Host Access Point"];

            break;

        case kCWOpModeMonitorMode:

            opModeStr = [NSString stringWithString:@"Monitor Mode"];

            break;

    return opModeStr;

- (void)updateInterfaceInfoTab

    NSNumber *num = nil;

    NSString *str = nil;

    BOOL powerState = self.currentInterface.power;

    [powerStateControl setSelectedSegment:(powerState ? 0 : 1)];

    if( [self.currentInterface.interfaceState intValue] == kCWInterfaceStateRunning )

        [disconnectButton setEnabled:YES];

    else

        [disconnectButton setEnabled:NO];

    num = [self.currentInterface opMode];

    [opModeField setStringValue:((num && powerState) ? [self stringForOpMode:num] : @"")];

    num = [self.currentInterface securityMode];

    [securityModeField setStringValue:((num && powerState) ? [self stringForSecurityMode:num] : @"")];

    num = [self.currentInterface phyMode];

    [phyModeField setStringValue:((num && powerState) ? [self stringForPHYMode:num] : @"")];

    str = [self.currentInterface ssid];

    [ssidField setStringValue:((str && powerState) ? str : @"")];

    str = [self.currentInterface bssid];

    [bssidField setStringValue:((str && powerState) ? str : @"")];

    num = [self.currentInterface txRate];

    [txRateField setStringValue:((num && powerState) ? [NSString stringWithFormat:@"%@ Mbps",[num stringValue]] : @"")];

    num = [self.currentInterface rssi];

    [rssiField setStringValue:((num && powerState) ? [NSString stringWithFormat:@"%@ dBm",[num stringValue]] : @"")];

    num = [self.currentInterface noise];

    [noiseField setStringValue:((num && powerState) ? [NSString stringWithFormat:@"%@ dBm",[num stringValue]] : @"")];

    num = [self.currentInterface txPower];

    [txPowerField setStringValue:((num && powerState) ? [NSString stringWithFormat:@"%@ mW",[num stringValue]] : @"")];

    str = [self.currentInterface countryCode];

    [countryCodeField setStringValue:((str && powerState) ? str : @"")];

    NSArray *supportedChannelsArray = [self.currentInterface supportedChannels];

    NSMutableString *supportedChannelsString = [NSMutableString stringWithCapacity:0];

    [channelPopup removeAllItems];

    for( id eachChannel in supportedChannelsArray )

        if( [eachChannel isEqualToNumber:[supportedChannelsArray lastObject]] )

            [supportedChannelsString appendFormat:@"%@",[eachChannel stringValue]];

        else

            [supportedChannelsString appendFormat:@"%@, ",[eachChannel stringValue]];

        if( powerState )

            [channelPopup addItemWithTitle:[eachChannel stringValue]];

    [supportedChannelsField setStringValue:supportedChannelsString];

    NSArray *supportedPHYModesArray = [self.currentInterface supportedPHYModes];

    NSMutableString *supportedPHYModesString = [NSMutableString stringWithString:@"802.11"];

    for( id eachPHYMode in supportedPHYModesArray )

        switch( [eachPHYMode intValue] )

            case kCWPHYMode11A:

                [supportedPHYModesString appendString:@"a/"];

                break;

            case kCWPHYMode11B:

                [supportedPHYModesString appendString:@"b/"];

                break;

            case kCWPHYMode11G:

                [supportedPHYModesString appendString:@"g/"];

                break;

            case kCWPHYMode11N:

                [supportedPHYModesString appendString:@"n"];

                break;

    if( [supportedPHYModesString hasSuffix:@"/"] )

        [supportedPHYModesString deleteCharactersInRange:NSMakeRange([supportedPHYModesString length] - 1, 1)];

    if( [supportedPHYModesString hasSuffix:@"802.11"] )

        supportedPHYModesString = [NSString stringWithString:@"None"];

    [supportedPHYModesField setStringValue:supportedPHYModesString];

    [channelPopup selectItemWithTitle:[[self.currentInterface channel] stringValue]];

    if( ![self.currentInterface power] || [[self.currentInterface interfaceState] intValue] == kCWInterfaceStateRunning )

        [channelPopup setEnabled:NO];

    else

        [channelPopup setEnabled:YES];

- (void)updateScanTab

    NSError *err = nil;

    NSDictionary *params = [NSDictionary dictionaryWithObject:[NSNumber numberWithBool:([mergeScanResultsCheckbox state] == NSOnState)] forKey:kCWScanKeyMerge];

    self.scanResults = [NSMutableArray arrayWithArray:[self.currentInterface scanForNetworksWithParameters:params error:&err]];

    if( err )

        [[NSAlert alertWithError:err] runModal];

    else

        [self.scanResults sortUsingDescriptors:[NSArray arrayWithObject:[[[NSSortDescriptor alloc] initWithKey:@"ssid" ascending:YES selector:@selector (caseInsensitiveCompare:)] autorelease]]];

    [scanResultsTable reloadData];

- (void)resetDialog

    [joinNetworkNameField setStringValue:@""];

    [joinNetworkNameField setEnabled:YES];

    [joinUsernameField setStringValue:@""];

    [joinUsernameField setEnabled:YES];

    [joinPassphraseField setStringValue:@""];

    [joinPassphraseField setEnabled:YES];

    [joinSecurityPopupButton removeAllItems];

    [joinSecurityPopupButton addItemsWithTitles:[NSArray arrayWithObjects:@"Open", @"WEP", @"WPA Personal", @"WPA2 Personal", @"WPA Enterprise", @"WPA2 Enterprise", @"802.1X WEP", nil]];

    [joinSecurityPopupButton selectItemAtIndex:0];

    [joinSecurityPopupButton setEnabled:YES];

    [joinUser8021XProfilePopupButton removeAllItems];

    [self changeSecurityMode:nil];

- (void)sheetDidEnd:(NSWindow *)sheet returnCode:(NSInteger)returnCode contextInfo:(void *)contextInfo

    self.joinDialogContext = NO;

#pragma mark -

#pragma mark NSNibAwaking Protocol

- (void) awakeFromNib

    // populate interfaces popup with all supported interfaces

    [supportedInterfacesPopup removeAllItems];

    [supportedInterfacesPopup addItemsWithTitles:[CWInterface supportedInterfaces]];

    // setup scan results table

    [scanResultsTable setDataSource:self];

    [scanResultsTable setDelegate:self];

    ssidColumn = [scanResultsTable tableColumnWithIdentifier:(NSString *)@"NETWORK_NAME"];

    bssidColumn = [scanResultsTable tableColumnWithIdentifier:(NSString *)@"BSSID"];

    channelColumn = [scanResultsTable tableColumnWithIdentifier:(NSString *)@"CHANNEL"];

    phyModeColumn = [scanResultsTable tableColumnWithIdentifier:(NSString *)@"PHY_MODE"];

    ibssColumn = [scanResultsTable tableColumnWithIdentifier:(NSString *)@"NETWORK_MODE"];

    rssiColumn = [scanResultsTable tableColumnWithIdentifier:(NSString *)@"RSSI"];

    securityModeColumn = [scanResultsTable tableColumnWithIdentifier:(NSString *)@"SECURITY_MODE"];

    // hide progress indicators

    [refreshSpinner setHidden:YES];

    [joinSpinner setHidden:YES];

    [ibssSpinner setHidden:YES];

    // register for notifcations

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleNotification::) name:kCWModeDidChangeNotification object:nil];

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleNotification:) name:kCWSSIDDidChangeNotification object:nil];

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleNotification:) name:kCWBSSIDDidChangeNotification object:nil];

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleNotification:) name:kCWCountryCodeDidChangeNotification object:nil];

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleNotification:) name:kCWLinkDidChangeNotification object:nil];

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleNotification:) name:kCWPowerDidChangeNotification object:nil];

#pragma mark -

#pragma mark NSApplicationDelegate Protocol

- (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)theApplication

    return YES;

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification

    [supportedInterfacesPopup selectItemAtIndex:0];

    [self interfaceSelected:nil];

#pragma mark -

#pragma mark IBAction Methods

- (IBAction)interfaceSelected:(id)sender

    self.currentInterface = [CWInterface interfaceWithName:[[supportedInterfacesPopup selectedItem] title]];

    [self updateInterfaceInfoTab];

- (IBAction)refreshPressed:(id)sender

    [refreshSpinner setHidden:NO];

    [refreshSpinner startAnimation:self];

    if( [[[tabView selectedTabViewItem] label] isEqualToString:@"Interface Info"] )

        [self updateInterfaceInfoTab];

    else if( [[[tabView selectedTabViewItem] label] isEqualToString:@"Scan"] )

        [self updateScanTab];

    [refreshSpinner stopAnimation:self];

    [refreshSpinner setHidden:YES];

- (IBAction)changePower:(id)sender

    NSError *err = nil;

    BOOL result = [self.currentInterface setPower:([powerStateControl selectedSegment] ? NO : YES) error:&err];

    if( !result )

        [[NSAlert alertWithError:err] runModal];

    [self updateInterfaceInfoTab];

- (IBAction)changeChannel:(id)sender

    NSError *err = nil;

    BOOL result = [self.currentInterface setChannel:[[NSNumber numberWithInt:[[[channelPopup selectedItem] title] intValue]] unsignedIntegerValue] error:&err];

    if( !result )

        [[NSAlert alertWithError:err] runModal];

    [self updateInterfaceInfoTab];

- (IBAction)disconnect:(id)sender

    [self.currentInterface disassociate];

    [self updateInterfaceInfoTab];

- (IBAction)changeSecurityMode:(id)sender

    if( [[[joinSecurityPopupButton selectedItem] title] isEqualToString:@"WPA Enterprise"] ||

       [[[joinSecurityPopupButton selectedItem] title] isEqualToString:@"WPA2 Enterprise"] ||

       [[[joinSecurityPopupButton selectedItem] title] isEqualToString:@"802.1X WEP"] )

        [joinUsernameField setEnabled:YES];

        [joinUser8021XProfilePopupButton setEnabled:YES];

        [joinPassphraseField setEnabled:YES];

        [joinUser8021XProfilePopupButton addItemWithTitle:@"Default"];

        for( CW8021XProfile *each8021XProfile in [CW8021XProfile allUser8021XProfiles] )

            [joinUser8021XProfilePopupButton addItemWithTitle:[each8021XProfile userDefinedName]];

        [joinUser8021XProfilePopupButton selectItemAtIndex:0];

    else if( [[[joinSecurityPopupButton selectedItem] title] isEqualToString:@"WPA Personal"] ||

            [[[joinSecurityPopupButton selectedItem] title] isEqualToString:@"WPA2 Personal"] ||

            [[[joinSecurityPopupButton selectedItem] title] isEqualToString:@"WEP"] )

        [joinUser8021XProfilePopupButton removeAllItems];

        [joinUser8021XProfilePopupButton setEnabled:NO];

        [joinUsernameField setEnabled:NO];

        [joinPassphraseField setEnabled:YES];

    else

        [joinUser8021XProfilePopupButton removeAllItems];

        [joinPassphraseField setEnabled:NO];

        [joinUsernameField setEnabled:NO];

        [joinUser8021XProfilePopupButton setEnabled:NO];

- (IBAction)change8021XProfile:(id)sender

    CW8021XProfile *tmp = [[CW8021XProfile allUser8021XProfiles] objectAtIndex:[joinUser8021XProfilePopupButton indexOfSelectedItem] -1];

    if( tmp )

        if( [[[joinUser8021XProfilePopupButton selectedItem] title] isEqualToString:@"Default"] )

            [joinUsernameField setStringValue:@""];

            [joinUsernameField setEnabled:YES];

            [joinPassphraseField setStringValue:@""];

            [joinPassphraseField setEnabled:YES];

        else

            [joinUsernameField setStringValue:tmp.username];

            [joinUsernameField setEnabled:NO];

            [joinPassphraseField setStringValue:tmp.password];

            [joinPassphraseField setEnabled:NO];

- (IBAction)joinOKButtonPressed:(id)sender

    CW8021XProfile *user8021XProfile = nil;

    [joinSpinner setHidden:NO];

    [joinSpinner startAnimation:self];

    if( [joinUser8021XProfilePopupButton isEnabled] )

        if( [[[joinUser8021XProfilePopupButton selectedItem] title] isEqualToString:@"Default"] )

            user8021XProfile = [CW8021XProfile profile];

            user8021XProfile.ssid = [joinNetworkNameField stringValue];

            user8021XProfile.userDefinedName = [joinNetworkNameField stringValue];

            user8021XProfile.username = ([[joinUsernameField stringValue] length] ? [joinUsernameField stringValue] : nil);

            user8021XProfile.password = ([[joinPassphraseField stringValue] length] ? [joinPassphraseField stringValue] : nil);

        else

            user8021XProfile = [[CW8021XProfile allUser8021XProfiles] objectAtIndex:[joinUser8021XProfilePopupButton indexOfSelectedItem]-1];

    if( self.joinDialogContext )

        NSMutableDictionary *params = [NSMutableDictionary dictionaryWithCapacity:0];

        if( user8021XProfile )

            [params setValue:user8021XProfile forKey:kCWAssocKey8021XProfile];

        else

            [params setValue:([[joinPassphraseField stringValue] length] ? [joinPassphraseField stringValue] : nil) forKey:kCWAssocKeyPassphrase];

        NSError *err = nil;

        BOOL result = [self.currentInterface associateToNetwork:self.selectedNetwork parameters:[NSDictionary dictionaryWithDictionary:params] error:&err];

        [joinSpinner stopAnimation:self];

        [joinSpinner setHidden:YES];

        if( !result )

            [[NSAlert alertWithError:err] runModal];

        else

            [self joinCancelButtonPressed:nil];

- (IBAction)joinCancelButtonPressed:(id)sender

    [(NSApplication*)NSApp endSheet:joinDialogWindow];

    [joinDialogWindow orderOut:sender];

- (IBAction)joinButtonPressed:(id)sender

    NSInteger index = [scanResultsTable selectedRow];

    if( index >= 0 )

        [self resetDialog];

        self.selectedNetwork = [self.scanResults objectAtIndex:index];

        [joinNetworkNameField setStringValue:self.selectedNetwork.ssid];

        [joinNetworkNameField setEnabled:NO];

        [joinSecurityPopupButton selectItemWithTitle:[self stringForSecurityMode:self.selectedNetwork.securityMode]];

        [joinSecurityPopupButton setEnabled:NO];

        [self changeSecurityMode:nil];

        CWWirelessProfile *wp = self.selectedNetwork.wirelessProfile;

        CW8021XProfile *xp = wp.user8021XProfile;

        switch( [self.selectedNetwork.securityMode intValue] )

            case kCWSecurityModeWPA_PSK:

            case kCWSecurityModeWPA2_PSK:

            case kCWSecurityModeWEP:

                if( wp.passphrase )

                    [joinPassphraseField setStringValue:wp.passphrase];

                break;

            case kCWSecurityModeOpen:

                break;

            case kCWSecurityModeWPA_Enterprise:

            case kCWSecurityModeWPA2_Enterprise:

                if( xp )

                    [joinUser8021XProfilePopupButton selectItemWithTitle:xp.userDefinedName];

                    [joinUsernameField setStringValue:xp.username];

                    [joinUsernameField setEnabled:NO];

                    [joinPassphraseField setStringValue:xp.password];

                    [joinPassphraseField setEnabled:NO];

                break;

        // reset first repsponder

        [joinDialogWindow makeFirstResponder:joinNetworkNameField];

        self.joinDialogContext = YES;

        [NSApp beginSheet:joinDialogWindow modalForWindow:mainWindow modalDelegate:self didEndSelector:@selector(sheetDidEnd:returnCode:contextInfo:) contextInfo:nil];

- (IBAction)ibssOKButtonPressed:(id)sender

    [ibssSpinner setHidden:NO];

    [ibssSpinner startAnimation:self];

    NSString *networkName = [ibssNetworkNameField stringValue];

    NSNumber *channel = [NSNumber numberWithInt:[[[ibssChannelPopupButton selectedItem] title] intValue]];

    NSString *passphrase = [ibssPassphraseField stringValue];

    NSMutableDictionary *ibssParams = [NSMutableDictionary dictionaryWithCapacity:0];

    if( networkName && [networkName length] )

        [ibssParams setValue:networkName forKey:kCWIBSSKeySSID];

    if( channel && [channel intValue] > 0 )

        [ibssParams setValue:channel forKey:kCWIBSSKeyChannel];

    if( passphrase && [passphrase length] )

        [ibssParams setValue:passphrase forKey:kCWIBSSKeyPassphrase];

    NSError *error = nil;

    BOOL created = [self.currentInterface enableIBSSWithParameters:[NSDictionary dictionaryWithDictionary:ibssParams] error:&error];

    [ibssSpinner stopAnimation:self];

    [ibssSpinner setHidden:YES];

    if( !created )

        [[NSAlert alertWithError:error] runModal];

    else

        [self ibssCancelButtonPressed:nil];

- (IBAction)ibssCancelButtonPressed:(id)sender

    [(NSApplication*)NSApp endSheet:ibssDialogWindow];

    [ibssDialogWindow orderOut:sender];

- (IBAction)createIBSSButtonPressed:(id)sender

    // add machine name as default SSID

    CFStringRef machineName = CSCopyMachineName();

    if( machineName )

        [ibssNetworkNameField setStringValue:(id)machineName];

        CFRelease(machineName);

    // hard code IBSS channel for now

    [ibssChannelPopupButton addItemWithTitle:@"11"];

    [ibssChannelPopupButton setEnabled:NO];

    // select channel 11 as default channel

    [ibssChannelPopupButton selectItemWithTitle:@"11"];

    // reset passphrase

    [ibssPassphraseField setStringValue:@""];

    // reset first responder

    [ibssDialogWindow makeFirstResponder:ibssNetworkNameField];

    [NSApp beginSheet:ibssDialogWindow modalForWindow:mainWindow modalDelegate:self didEndSelector:nil contextInfo:nil];

#pragma mark -

#pragma mark NSTableDataSource Protocol

- (id)tableView:(NSTableView *)tableView objectValueForTableColumn:(NSTableColumn *)tableColumn row:(NSInteger)row;

    if( tableView == scanResultsTable )

        if( row < [self.scanResults count] )

            CWNetwork *network = [self.scanResults objectAtIndex:row];

            if( tableColumn == ssidColumn )

                return [network ssid];

            if( tableColumn == bssidColumn )

                return [network bssid];

            if( tableColumn == channelColumn )

                return [[network channel] stringValue];

            if( tableColumn == phyModeColumn )

                return [self stringForPHYMode:[network phyMode]];

            if( tableColumn == securityModeColumn )

                return [self stringForSecurityMode:[network securityMode]];

            if( tableColumn == rssiColumn )

                return [[network rssi] stringValue];

            if( tableColumn == ibssColumn )

                return ([network isIBSS] ? [NSString stringWithString:@"Yes"] : [NSString stringWithString:@"No"]);

    return nil;

- (NSInteger)numberOfRowsInTableView:(NSTableView *)tableView;

    return (self.scanResults ? [self.scanResults count] : 0);

#pragma mark -

#pragma mark Notification Handler

- (void)handleNotification:(NSNotification*)note

    [self updateInterfaceInfoTab];

@end

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