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-//
-// HIDRemote.m
-// HIDRemote V1.2 (27th May 2011)
-//
-// Created by Felix Schwarz on 06.04.07.
-// Copyright 2007-2011 IOSPIRIT GmbH. All rights reserved.
-//
-// The latest version of this class is available at
-// http://www.iospirit.com/developers/hidremote/
-//
-// ** LICENSE *************************************************************************
-//
-// Copyright (c) 2007-2011 IOSPIRIT GmbH (http://www.iospirit.com/)
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without modification,
-// are permitted provided that the following conditions are met:
-//
-// * Redistributions of source code must retain the above copyright notice, this list
-// of conditions and the following disclaimer.
-//
-// * Redistributions in binary form must reproduce the above copyright notice, this
-// list of conditions and the following disclaimer in the documentation and/or other
-// materials provided with the distribution.
-//
-// * Neither the name of IOSPIRIT GmbH nor the names of its contributors may be used to
-// endorse or promote products derived from this software without specific prior
-// written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
-// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
-// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
-// SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
-// TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
-// BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
-// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
-// DAMAGE.
-//
-// ************************************************************************************
-
-// ************************************************************************************
-// ********************************** DOCUMENTATION ***********************************
-// ************************************************************************************
-//
-// - a reference is available at http://www.iospirit.com/developers/hidremote/reference/
-// - for a guide, please see http://www.iospirit.com/developers/hidremote/guide/
-//
-// ************************************************************************************
-
-#import "HIDRemote.h"
-
-// Callback Prototypes
-static void HIDEventCallback( void * target,
- IOReturn result,
- void * refcon,
- void * sender);
-
-static void ServiceMatchingCallback( void *refCon,
- io_iterator_t iterator);
-
-static void ServiceNotificationCallback(void * refCon,
- io_service_t service,
- natural_t messageType,
- void * messageArgument);
-
-static void SecureInputNotificationCallback( void * refCon,
- io_service_t service,
- natural_t messageType,
- void * messageArgument);
-
-// Shared HIDRemote instance
-static HIDRemote *sHIDRemote = nil;
-
-@implementation HIDRemote
-
-#pragma mark -- Init, dealloc & shared instance --
-
-+ (HIDRemote *)sharedHIDRemote
-{
- if (sHIDRemote==nil)
- {
- sHIDRemote = [[HIDRemote alloc] init];
- }
-
- return (sHIDRemote);
-}
-
-- (id)init
-{
- if ((self = [super init]) != nil)
- {
- #ifdef HIDREMOTE_THREADSAFETY_HARDENED_NOTIFICATION_HANDLING
- _runOnThread = [[NSThread currentThread] retain];
- #endif
-
- // Detect application becoming active/inactive
- [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_appStatusChanged:) name:NSApplicationDidBecomeActiveNotification object:NSApp];
- [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_appStatusChanged:) name:NSApplicationWillResignActiveNotification object:NSApp];
- [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_appStatusChanged:) name:NSApplicationWillTerminateNotification object:NSApp];
-
- // Handle distributed notifications
- _pidString = [[NSString alloc] initWithFormat:@"%d", getpid()];
-
- [[NSDistributedNotificationCenter defaultCenter] addObserver:self selector:@selector(_handleNotifications:) name:kHIDRemoteDNHIDRemotePing object:nil];
- [[NSDistributedNotificationCenter defaultCenter] addObserver:self selector:@selector(_handleNotifications:) name:kHIDRemoteDNHIDRemoteRetry object:kHIDRemoteDNHIDRemoteRetryGlobalObject];
- [[NSDistributedNotificationCenter defaultCenter] addObserver:self selector:@selector(_handleNotifications:) name:kHIDRemoteDNHIDRemoteRetry object:_pidString];
-
- // Enabled by default: simulate hold events for plus/minus
- _simulateHoldEvents = YES;
-
- // Enabled by default: work around for a locking issue introduced with Security Update 2008-004 / 10.4.9 and beyond (credit for finding this workaround goes to Martin Kahr)
- _secureEventInputWorkAround = YES;
- _secureInputNotification = 0;
-
- // Initialize instance variables
- _lastSeenRemoteID = -1;
- _lastSeenModel = kHIDRemoteModelUndetermined;
- _unusedButtonCodes = [[NSMutableArray alloc] init];
- _exclusiveLockLending = NO;
- _sendExclusiveResourceReuseNotification = YES;
- _applicationIsTerminating = NO;
-
- // Send status notifications
- _sendStatusNotifications = YES;
- }
-
- return (self);
-}
-
-- (void)dealloc
-{
- [[NSNotificationCenter defaultCenter] removeObserver:self name:NSApplicationWillTerminateNotification object:NSApp];
- [[NSNotificationCenter defaultCenter] removeObserver:self name:NSApplicationWillResignActiveNotification object:NSApp];
- [[NSNotificationCenter defaultCenter] removeObserver:self name:NSApplicationDidBecomeActiveNotification object:NSApp];
-
- [[NSDistributedNotificationCenter defaultCenter] removeObserver:self name:kHIDRemoteDNHIDRemotePing object:nil];
- [[NSDistributedNotificationCenter defaultCenter] removeObserver:self name:kHIDRemoteDNHIDRemoteRetry object:kHIDRemoteDNHIDRemoteRetryGlobalObject];
- [[NSDistributedNotificationCenter defaultCenter] removeObserver:self name:kHIDRemoteDNHIDRemoteRetry object:_pidString];
- [[NSDistributedNotificationCenter defaultCenter] removeObserver:self name:nil object:nil]; /* As demanded by the documentation for -[NSDistributedNotificationCenter removeObserver:name:object:] */
-
- [self stopRemoteControl];
-
- [self setExclusiveLockLendingEnabled:NO];
-
- [self setDelegate:nil];
-
- if (_unusedButtonCodes != nil)
- {
- [_unusedButtonCodes release];
- _unusedButtonCodes = nil;
- }
-
- #ifdef HIDREMOTE_THREADSAFETY_HARDENED_NOTIFICATION_HANDLING
- [_runOnThread release];
- _runOnThread = nil;
- #endif
-
- [_pidString release];
- _pidString = nil;
-
- [super dealloc];
-}
-
-#pragma mark -- PUBLIC: System Information --
-+ (BOOL)isCandelairInstalled
-{
- mach_port_t masterPort = 0;
- kern_return_t kernResult;
- io_service_t matchingService = 0;
- BOOL isInstalled = NO;
-
- kernResult = IOMasterPort(MACH_PORT_NULL, &masterPort);
- if ((kernResult!=kIOReturnSuccess) || (masterPort==0)) { return(NO); }
-
- if ((matchingService = IOServiceGetMatchingService(masterPort, IOServiceMatching("IOSPIRITIRController"))) != 0)
- {
- isInstalled = YES;
- IOObjectRelease((io_object_t) matchingService);
- }
-
- mach_port_deallocate(mach_task_self(), masterPort);
-
- return (isInstalled);
-}
-
-+ (BOOL)isCandelairInstallationRequiredForRemoteMode:(HIDRemoteMode)remoteMode
-{
- return (NO);
-}
-
-- (HIDRemoteAluminumRemoteSupportLevel)aluminiumRemoteSystemSupportLevel
-{
- HIDRemoteAluminumRemoteSupportLevel supportLevel = kHIDRemoteAluminumRemoteSupportLevelNone;
- NSEnumerator *attribDictsEnum;
- NSDictionary *hidAttribsDict;
-
- attribDictsEnum = [_serviceAttribMap objectEnumerator];
-
- while ((hidAttribsDict = [attribDictsEnum nextObject]) != nil)
- {
- NSNumber *deviceSupportLevel;
-
- if ((deviceSupportLevel = [hidAttribsDict objectForKey:kHIDRemoteAluminumRemoteSupportLevel]) != nil)
- {
- if ([deviceSupportLevel intValue] > (int)supportLevel)
- {
- supportLevel = [deviceSupportLevel intValue];
- }
- }
- }
-
- return (supportLevel);
-}
-
-#pragma mark -- PUBLIC: Interface / API --
-- (BOOL)startRemoteControl:(HIDRemoteMode)hidRemoteMode
-{
- if ((_mode == kHIDRemoteModeNone) && (hidRemoteMode != kHIDRemoteModeNone))
- {
- kern_return_t kernReturn;
- CFMutableDictionaryRef matchDict=NULL;
- io_service_t rootService;
-
- do
- {
- // Get IOKit master port
- kernReturn = IOMasterPort(bootstrap_port, &_masterPort);
- if ((kernReturn!=kIOReturnSuccess) || (_masterPort==0)) { break; }
-
- // Setup notification port
- _notifyPort = IONotificationPortCreate(_masterPort);
-
- if ((_notifyRLSource = IONotificationPortGetRunLoopSource(_notifyPort)) != NULL)
- {
- CFRunLoopAddSource( CFRunLoopGetCurrent(),
- _notifyRLSource,
- kCFRunLoopCommonModes);
- }
- else
- {
- break;
- }
-
- // Setup SecureInput notification
- if ((hidRemoteMode == kHIDRemoteModeExclusive) || (hidRemoteMode == kHIDRemoteModeExclusiveAuto))
- {
- if ((rootService = IORegistryEntryFromPath(_masterPort, kIOServicePlane ":/")) != 0)
- {
- kernReturn = IOServiceAddInterestNotification( _notifyPort,
- rootService,
- kIOBusyInterest,
- SecureInputNotificationCallback,
- (void *)self,
- &_secureInputNotification);
- if (kernReturn != kIOReturnSuccess) { break; }
-
- [self _updateSessionInformation];
- }
- else
- {
- break;
- }
- }
-
- // Setup notification matching dict
- matchDict = IOServiceMatching(kIOHIDDeviceKey);
- CFRetain(matchDict);
-
- // Actually add notification
- kernReturn = IOServiceAddMatchingNotification( _notifyPort,
- kIOFirstMatchNotification,
- matchDict, // one reference count consumed by this call
- ServiceMatchingCallback,
- (void *) self,
- &_matchingServicesIterator);
- if (kernReturn != kIOReturnSuccess) { break; }
-
- // Setup serviceAttribMap
- _serviceAttribMap = [[NSMutableDictionary alloc] init];
- if (_serviceAttribMap==nil) { break; }
-
- // Phew .. everything went well!
- _mode = hidRemoteMode;
- CFRelease(matchDict);
-
- [self _serviceMatching:_matchingServicesIterator];
-
- [self _postStatusWithAction:kHIDRemoteDNStatusActionStart];
-
- return (YES);
-
- }while(0);
-
- // An error occurred. Do necessary clean up.
- if (matchDict!=NULL)
- {
- CFRelease(matchDict);
- matchDict = NULL;
- }
-
- [self stopRemoteControl];
- }
-
- return (NO);
-}
-
-- (void)stopRemoteControl
-{
- UInt32 serviceCount = 0;
-
- _autoRecover = NO;
- _isStopping = YES;
-
- if (_autoRecoveryTimer!=nil)
- {
- [_autoRecoveryTimer invalidate];
- [_autoRecoveryTimer release];
- _autoRecoveryTimer = nil;
- }
-
- if (_serviceAttribMap!=nil)
- {
- NSDictionary *cloneDict = [[NSDictionary alloc] initWithDictionary:_serviceAttribMap];
-
- if (cloneDict!=nil)
- {
- NSEnumerator *mapKeyEnum = [cloneDict keyEnumerator];
- NSNumber *serviceValue;
-
- while ((serviceValue = [mapKeyEnum nextObject]) != nil)
- {
- [self _destructService:(io_object_t)[serviceValue unsignedIntValue]];
- serviceCount++;
- };
-
- [cloneDict release];
- cloneDict = nil;
- }
-
- [_serviceAttribMap release];
- _serviceAttribMap = nil;
- }
-
- if (_matchingServicesIterator!=0)
- {
- IOObjectRelease((io_object_t) _matchingServicesIterator);
- _matchingServicesIterator = 0;
- }
-
- if (_secureInputNotification!=0)
- {
- IOObjectRelease((io_object_t) _secureInputNotification);
- _secureInputNotification = 0;
- }
-
- if (_notifyRLSource!=NULL)
- {
- CFRunLoopSourceInvalidate(_notifyRLSource);
- _notifyRLSource = NULL;
- }
-
- if (_notifyPort!=NULL)
- {
- IONotificationPortDestroy(_notifyPort);
- _notifyPort = NULL;
- }
-
- if (_masterPort!=0)
- {
- mach_port_deallocate(mach_task_self(), _masterPort);
- _masterPort = 0;
- }
-
- if (_returnToPID!=nil)
- {
- [_returnToPID release];
- _returnToPID = nil;
- }
-
- if (_mode!=kHIDRemoteModeNone)
- {
- // Post status
- [self _postStatusWithAction:kHIDRemoteDNStatusActionStop];
-
- if (_sendStatusNotifications)
- {
- // In case we were not ready to lend it earlier, tell other HIDRemote apps that the resources (if any were used) are now again available for use by other applications
- if (((_mode==kHIDRemoteModeExclusive) || (_mode==kHIDRemoteModeExclusiveAuto)) && (_sendExclusiveResourceReuseNotification==YES) && (_exclusiveLockLending==NO) && (serviceCount>0))
- {
- _mode = kHIDRemoteModeNone;
-
- if (!_isRestarting)
- {
- [[NSDistributedNotificationCenter defaultCenter] postNotificationName:kHIDRemoteDNHIDRemoteRetry
- object:kHIDRemoteDNHIDRemoteRetryGlobalObject
- userInfo:[NSDictionary dictionaryWithObjectsAndKeys:
- [NSNumber numberWithUnsignedInt:(unsigned int)getpid()], kHIDRemoteDNStatusPIDKey,
- [[NSBundle mainBundle] bundleIdentifier], (NSString *)kCFBundleIdentifierKey,
- nil]
- deliverImmediately:YES];
- }
- }
- }
- }
-
- _mode = kHIDRemoteModeNone;
- _isStopping = NO;
-}
-
-- (BOOL)isStarted
-{
- return (_mode != kHIDRemoteModeNone);
-}
-
-- (HIDRemoteMode)startedInMode
-{
- return (_mode);
-}
-
-- (unsigned)activeRemoteControlCount
-{
- return ([_serviceAttribMap count]);
-}
-
-- (SInt32)lastSeenRemoteControlID
-{
- return (_lastSeenRemoteID);
-}
-
-- (HIDRemoteModel)lastSeenModel
-{
- return (_lastSeenModel);
-}
-
-- (void)setLastSeenModel:(HIDRemoteModel)aModel
-{
- _lastSeenModel = aModel;
-}
-
-- (void)setSimulateHoldEvents:(BOOL)newSimulateHoldEvents
-{
- _simulateHoldEvents = newSimulateHoldEvents;
-}
-
-- (BOOL)simulateHoldEvents
-{
- return (_simulateHoldEvents);
-}
-
-- (NSArray *)unusedButtonCodes
-{
- return (_unusedButtonCodes);
-}
-
-- (void)setUnusedButtonCodes:(NSArray *)newArrayWithUnusedButtonCodesAsNSNumbers
-{
- [newArrayWithUnusedButtonCodesAsNSNumbers retain];
- [_unusedButtonCodes release];
-
- _unusedButtonCodes = newArrayWithUnusedButtonCodesAsNSNumbers;
-
- [self _postStatusWithAction:kHIDRemoteDNStatusActionUpdate];
-}
-
-- (void)setDelegate:(NSObject <HIDRemoteDelegate> *)newDelegate
-{
- _delegate = newDelegate;
-}
-
-- (NSObject <HIDRemoteDelegate> *)delegate
-{
- return (_delegate);
-}
-
-#pragma mark -- PUBLIC: Expert APIs --
-- (void)setEnableSecureEventInputWorkaround:(BOOL)newEnableSecureEventInputWorkaround
-{
- _secureEventInputWorkAround = newEnableSecureEventInputWorkaround;
-}
-
-- (BOOL)enableSecureEventInputWorkaround
-{
- return (_secureEventInputWorkAround);
-}
-
-- (void)setExclusiveLockLendingEnabled:(BOOL)newExclusiveLockLendingEnabled
-{
- if (newExclusiveLockLendingEnabled != _exclusiveLockLending)
- {
- _exclusiveLockLending = newExclusiveLockLendingEnabled;
-
- if (_exclusiveLockLending)
- {
- [[NSDistributedNotificationCenter defaultCenter] addObserver:self selector:@selector(_handleNotifications:) name:kHIDRemoteDNHIDRemoteStatus object:nil];
- }
- else
- {
- [[NSDistributedNotificationCenter defaultCenter] removeObserver:self name:kHIDRemoteDNHIDRemoteStatus object:nil];
-
- [_waitForReturnByPID release];
- _waitForReturnByPID = nil;
- }
- }
-}
-
-- (BOOL)exclusiveLockLendingEnabled
-{
- return (_exclusiveLockLending);
-}
-
-- (void)setSendExclusiveResourceReuseNotification:(BOOL)newSendExclusiveResourceReuseNotification
-{
- _sendExclusiveResourceReuseNotification = newSendExclusiveResourceReuseNotification;
-}
-
-- (BOOL)sendExclusiveResourceReuseNotification
-{
- return (_sendExclusiveResourceReuseNotification);
-}
-
-- (BOOL)isApplicationTerminating
-{
- return (_applicationIsTerminating);
-}
-
-- (BOOL)isStopping
-{
- return (_isStopping);
-}
-
-#pragma mark -- PRIVATE: Application becomes active / inactive handling for kHIDRemoteModeExclusiveAuto --
-- (void)_appStatusChanged:(NSNotification *)notification
-{
- #ifdef HIDREMOTE_THREADSAFETY_HARDENED_NOTIFICATION_HANDLING
- if ([self respondsToSelector:@selector(performSelector:onThread:withObject:waitUntilDone:)]) // OS X 10.5+ only
- {
- if ([NSThread currentThread] != _runOnThread)
- {
- if ([[notification name] isEqual:NSApplicationDidBecomeActiveNotification])
- {
- if (!_autoRecover)
- {
- return;
- }
- }
-
- if ([[notification name] isEqual:NSApplicationWillResignActiveNotification])
- {
- if (_mode != kHIDRemoteModeExclusiveAuto)
- {
- return;
- }
- }
-
- [self performSelector:@selector(_appStatusChanged:) onThread:_runOnThread withObject:notification waitUntilDone:[[notification name] isEqual:NSApplicationWillTerminateNotification]];
- return;
- }
- }
- #endif
-
- if (notification!=nil)
- {
- if (_autoRecoveryTimer!=nil)
- {
- [_autoRecoveryTimer invalidate];
- [_autoRecoveryTimer release];
- _autoRecoveryTimer = nil;
- }
-
- if ([[notification name] isEqual:NSApplicationDidBecomeActiveNotification])
- {
- if (_autoRecover)
- {
- // Delay autorecover by 0.1 to avoid race conditions
- if ((_autoRecoveryTimer = [[NSTimer alloc] initWithFireDate:[NSDate dateWithTimeIntervalSinceNow:0.1] interval:0.1 target:self selector:@selector(_delayedAutoRecovery:) userInfo:nil repeats:NO]) != nil)
- {
- // Using CFRunLoopAddTimer instead of [[NSRunLoop currentRunLoop] addTimer:.. for consistency with run loop modes.
- // The kCFRunLoopCommonModes counterpart NSRunLoopCommonModes is only available in 10.5 and later, whereas this code
- // is designed to be also compatible with 10.4. CFRunLoopTimerRef is "toll-free-bridged" with NSTimer since 10.0.
- CFRunLoopAddTimer(CFRunLoopGetCurrent(), (CFRunLoopTimerRef)_autoRecoveryTimer, kCFRunLoopCommonModes);
- }
- }
- }
-
- if ([[notification name] isEqual:NSApplicationWillResignActiveNotification])
- {
- if (_mode == kHIDRemoteModeExclusiveAuto)
- {
- [self stopRemoteControl];
- _autoRecover = YES;
- }
- }
-
- if ([[notification name] isEqual:NSApplicationWillTerminateNotification])
- {
- _applicationIsTerminating = YES;
-
- if ([self isStarted])
- {
- [self stopRemoteControl];
- }
- }
- }
-}
-
-- (void)_delayedAutoRecovery:(NSTimer *)aTimer
-{
- [_autoRecoveryTimer invalidate];
- [_autoRecoveryTimer release];
- _autoRecoveryTimer = nil;
-
- if (_autoRecover)
- {
- [self startRemoteControl:kHIDRemoteModeExclusiveAuto];
- _autoRecover = NO;
- }
-}
-
-
-#pragma mark -- PRIVATE: Distributed notifiations handling --
-- (void)_postStatusWithAction:(NSString *)action
-{
- if (_sendStatusNotifications)
- {
- [[NSDistributedNotificationCenter defaultCenter] postNotificationName:kHIDRemoteDNHIDRemoteStatus
- object:((_pidString!=nil) ? _pidString : [NSString stringWithFormat:@"%d",getpid()])
- userInfo:[NSDictionary dictionaryWithObjectsAndKeys:
- [NSNumber numberWithInt:1], kHIDRemoteDNStatusHIDRemoteVersionKey,
- [NSNumber numberWithUnsignedInt:(unsigned int)getpid()], kHIDRemoteDNStatusPIDKey,
- [NSNumber numberWithInt:(int)_mode], kHIDRemoteDNStatusModeKey,
- [NSNumber numberWithUnsignedInt:(unsigned int)[self activeRemoteControlCount]], kHIDRemoteDNStatusRemoteControlCountKey,
- ((_unusedButtonCodes!=nil) ? _unusedButtonCodes : [NSArray array]), kHIDRemoteDNStatusUnusedButtonCodesKey,
- action, kHIDRemoteDNStatusActionKey,
- [[NSBundle mainBundle] bundleIdentifier], (NSString *)kCFBundleIdentifierKey,
- _returnToPID, kHIDRemoteDNStatusReturnToPIDKey,
- nil]
- deliverImmediately:YES
- ];
- }
-}
-
-- (void)_handleNotifications:(NSNotification *)notification
-{
- NSString *notificationName;
-
- #ifdef HIDREMOTE_THREADSAFETY_HARDENED_NOTIFICATION_HANDLING
- if ([self respondsToSelector:@selector(performSelector:onThread:withObject:waitUntilDone:)]) // OS X 10.5+ only
- {
- if ([NSThread currentThread] != _runOnThread)
- {
- [self performSelector:@selector(_handleNotifications:) onThread:_runOnThread withObject:notification waitUntilDone:NO];
- return;
- }
- }
- #endif
-
- if ((notification!=nil) && ((notificationName = [notification name]) != nil))
- {
- if ([notificationName isEqual:kHIDRemoteDNHIDRemotePing])
- {
- [self _postStatusWithAction:kHIDRemoteDNStatusActionUpdate];
- }
-
- if ([notificationName isEqual:kHIDRemoteDNHIDRemoteRetry])
- {
- if ([self isStarted])
- {
- BOOL retry = YES;
-
- // Ignore our own global retry broadcasts
- if ([[notification object] isEqual:kHIDRemoteDNHIDRemoteRetryGlobalObject])
- {
- NSNumber *fromPID;
-
- if ((fromPID = [[notification userInfo] objectForKey:kHIDRemoteDNStatusPIDKey]) != nil)
- {
- if (getpid() == (int)[fromPID unsignedIntValue])
- {
- retry = NO;
- }
- }
- }
-
- if (retry)
- {
- if (([self delegate] != nil) &&
- ([[self delegate] respondsToSelector:@selector(hidRemote:shouldRetryExclusiveLockWithInfo:)]))
- {
- retry = [[self delegate] hidRemote:self shouldRetryExclusiveLockWithInfo:[notification userInfo]];
- }
- }
-
- if (retry)
- {
- HIDRemoteMode restartInMode = _mode;
-
- if (restartInMode != kHIDRemoteModeNone)
- {
- _isRestarting = YES;
- [self stopRemoteControl];
-
- [_returnToPID release];
- _returnToPID = nil;
-
- [self startRemoteControl:restartInMode];
- _isRestarting = NO;
-
- if (restartInMode != kHIDRemoteModeShared)
- {
- _returnToPID = [[[notification userInfo] objectForKey:kHIDRemoteDNStatusPIDKey] retain];
- }
- }
- }
- else
- {
- NSNumber *cacheReturnPID = _returnToPID;
-
- _returnToPID = [[[notification userInfo] objectForKey:kHIDRemoteDNStatusPIDKey] retain];
- [self _postStatusWithAction:kHIDRemoteDNStatusActionNoNeed];
- [_returnToPID release];
-
- _returnToPID = cacheReturnPID;
- }
- }
- }
-
- if (_exclusiveLockLending)
- {
- if ([notificationName isEqual:kHIDRemoteDNHIDRemoteStatus])
- {
- NSString *action;
-
- if ((action = [[notification userInfo] objectForKey:kHIDRemoteDNStatusActionKey]) != nil)
- {
- if ((_mode == kHIDRemoteModeNone) && (_waitForReturnByPID!=nil))
- {
- NSNumber *pidNumber, *returnToPIDNumber;
-
- if ((pidNumber = [[notification userInfo] objectForKey:kHIDRemoteDNStatusPIDKey]) != nil)
- {
- returnToPIDNumber = [[notification userInfo] objectForKey:kHIDRemoteDNStatusReturnToPIDKey];
-
- if ([action isEqual:kHIDRemoteDNStatusActionStart])
- {
- if ([pidNumber isEqual:_waitForReturnByPID])
- {
- NSNumber *startMode;
-
- if ((startMode = [[notification userInfo] objectForKey:kHIDRemoteDNStatusModeKey]) != nil)
- {
- if ([startMode intValue] == kHIDRemoteModeShared)
- {
- returnToPIDNumber = [NSNumber numberWithInt:getpid()];
- action = kHIDRemoteDNStatusActionNoNeed;
- }
- }
- }
- }
-
- if (returnToPIDNumber != nil)
- {
- if ([action isEqual:kHIDRemoteDNStatusActionStop] || [action isEqual:kHIDRemoteDNStatusActionNoNeed])
- {
- if ([pidNumber isEqual:_waitForReturnByPID] && ([returnToPIDNumber intValue] == getpid()))
- {
- [_waitForReturnByPID release];
- _waitForReturnByPID = nil;
-
- if (([self delegate] != nil) &&
- ([[self delegate] respondsToSelector:@selector(hidRemote:exclusiveLockReleasedByApplicationWithInfo:)]))
- {
- [[self delegate] hidRemote:self exclusiveLockReleasedByApplicationWithInfo:[notification userInfo]];
- }
- else
- {
- [self startRemoteControl:kHIDRemoteModeExclusive];
- }
- }
- }
- }
- }
- }
-
- if (_mode==kHIDRemoteModeExclusive)
- {
- if ([action isEqual:kHIDRemoteDNStatusActionStart])
- {
- NSNumber *originPID = [[notification userInfo] objectForKey:kHIDRemoteDNStatusPIDKey];
- BOOL lendLock = YES;
-
- if ([originPID intValue] != getpid())
- {
- if (([self delegate] != nil) &&
- ([[self delegate] respondsToSelector:@selector(hidRemote:lendExclusiveLockToApplicationWithInfo:)]))
- {
- lendLock = [[self delegate] hidRemote:self lendExclusiveLockToApplicationWithInfo:[notification userInfo]];
- }
-
- if (lendLock)
- {
- [_waitForReturnByPID release];
- _waitForReturnByPID = [originPID retain];
-
- if (_waitForReturnByPID != nil)
- {
- [self stopRemoteControl];
-
- [[NSDistributedNotificationCenter defaultCenter] postNotificationName:kHIDRemoteDNHIDRemoteRetry
- object:[NSString stringWithFormat:@"%d", [_waitForReturnByPID intValue]]
- userInfo:[NSDictionary dictionaryWithObjectsAndKeys:
- [NSNumber numberWithUnsignedInt:(unsigned int)getpid()], kHIDRemoteDNStatusPIDKey,
- [[NSBundle mainBundle] bundleIdentifier], (NSString *)kCFBundleIdentifierKey,
- nil]
- deliverImmediately:YES];
- }
- }
-