/*
*
* @APPLE_LICENSE_HEADER_START@
*
* Copyright (c) 1998-2003 Apple Computer, Inc. All Rights Reserved.
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
#import "BusProber.h"
@implementation BusProber
static void DeviceAdded(void *refCon, io_iterator_t iterator)
{
io_service_t ioDeviceObj=nil;
while( ioDeviceObj = IOIteratorNext( iterator) )
{
IOObjectRelease( ioDeviceObj );
}
[(BusProber *)refCon refreshData:false];
}
static void DeviceRemoved(void *refCon, io_iterator_t iterator)
{
io_service_t ioDeviceObj=nil;
while( (ioDeviceObj = IOIteratorNext( iterator)))
{
IOObjectRelease( ioDeviceObj );
}
[(BusProber *)refCon refreshData:false];
}
- initWithListener:(id)listener devicesArray:(NSMutableArray *)devices {
if (self = [super init]) {
_runLoopSource = NULL;
_listener = listener;
_devicesArray = [devices retain];
if (listener == nil) {
[NSException raise:@"BusProberBadListener" format:@"Listener must be non-nil"];
[self dealloc];
self = nil;
} else if (! [self registerForUSBNotifications]) {
NSLog(@"BusProber was unable to register for USB notifications");
[self dealloc];
self = nil;
} else {
// no problems
[self refreshData:true];
}
}
return self;
}
- (void)dealloc {
[self unregisterForUSBNotifications];
[_devicesArray release];
[super dealloc];
}
- (BOOL)registerForUSBNotifications
{
kern_return_t kr;
mach_port_t masterPort;
IONotificationPortRef gNotifyPort;
io_iterator_t gAddedIter,gRemovedIter;
kr = IOMasterPort(MACH_PORT_NULL, &masterPort);
if (kr != KERN_SUCCESS) return NO;
gNotifyPort = IONotificationPortCreate(masterPort);
_runLoopSource = IONotificationPortGetRunLoopSource(gNotifyPort);
CFRunLoopAddSource([[NSRunLoop currentRunLoop] getCFRunLoop], _runLoopSource, kCFRunLoopDefaultMode);
kr = IOServiceAddMatchingNotification(gNotifyPort,
kIOFirstMatchNotification,
IOServiceMatching(kIOUSBDeviceClassName),
DeviceAdded,
self,
&gAddedIter);
if (kr != KERN_SUCCESS) return NO;
kr = IOServiceAddMatchingNotification(gNotifyPort,
kIOTerminatedNotification,
IOServiceMatching(kIOUSBDeviceClassName),
DeviceRemoved,
self,
&gRemovedIter);
if (kr != KERN_SUCCESS) return NO;
DeviceAdded(self, gAddedIter);
DeviceRemoved(self, gRemovedIter);
mach_port_deallocate(mach_task_self(), masterPort);
return YES;
}
- (void)unregisterForUSBNotifications {
if (_runLoopSource != NULL)
{
CFRunLoopSourceInvalidate(_runLoopSource);
CFRelease(_runLoopSource);
}
}
- (void)refreshData:(BOOL)shouldForce {
if (!shouldForce && [[NSUserDefaults standardUserDefaults] boolForKey:@"BusProbeDontAutoRefresh"] == YES) {
return;
}
[_devicesArray removeAllObjects];
CFDictionaryRef matchingDict = NULL;
mach_port_t mMasterDevicePort = nil;
io_iterator_t devIter = nil;
io_service_t ioDeviceObj = nil;
IOReturn kr;
int deviceNumber = 0; //used to iterate through devices
kr = IOMasterPort(MACH_PORT_NULL, &mMasterDevicePort);
if (kr != kIOReturnSuccess) {
NSLog(@"BusProber: error in -refresh at IOMasterPort()");
return;
}
matchingDict = IOServiceMatching(kIOUSBDeviceClassName);
if (matchingDict == NULL) {
NSLog(@"BusProber: error in -refresh at IOServiceMatching() - dictionary was NULL");
mach_port_deallocate(mach_task_self(), mMasterDevicePort);
return;
}
kr = IOServiceGetMatchingServices(mMasterDevicePort, matchingDict /*reference consumed*/, &devIter);
if (kr != kIOReturnSuccess) {
NSLog(@"BusProber: error in -refresh at IOServiceGetMatchingServices()");
mach_port_deallocate(mach_task_self(), mMasterDevicePort);
return;
}
while (ioDeviceObj = IOIteratorNext(devIter)) {
IOCFPlugInInterface **ioPlugin;
IOUSBDeviceRef deviceIntf = NULL;
SInt32 score;
kr = IOCreatePlugInInterfaceForService(ioDeviceObj, kIOUSBDeviceUserClientTypeID, kIOCFPlugInInterfaceID, &ioPlugin, &score);
if (kr != kIOReturnSuccess) {
IOObjectRelease(ioDeviceObj);
continue;
}
kr = (*ioPlugin)->QueryInterface(ioPlugin, CFUUIDGetUUIDBytes(kIOUSBDeviceInterfaceID), (LPVOID *)&deviceIntf);
IODestroyPlugInInterface(ioPlugin);
ioPlugin = NULL;
if (kr != kIOReturnSuccess) {
IOObjectRelease(ioDeviceObj);
continue;
}
[self processDevice:deviceIntf deviceNumber:deviceNumber];
deviceNumber++;
(*deviceIntf)->Release(deviceIntf);
IOObjectRelease(ioDeviceObj);
}
IOObjectRelease(devIter);
mach_port_deallocate(mach_task_self(), mMasterDevicePort);
[_listener busProberInformationDidChange:self];
}
- (void)processDevice:(IOUSBDeviceRef)deviceIntf deviceNumber:(int)deviceNumber {
BusProbeDevice * thisDevice;
UInt32 locationID = 0;
UInt8 speed = 0;
USBDeviceAddress address = 0;
IOUSBDeviceDescriptor dev;
int len;
IOReturn error;
BOOL needToSuspend = FALSE;
thisDevice = [[BusProbeDevice alloc] init];
[_devicesArray addObject:thisDevice];
// Get the locationID for this device
if (GetDeviceLocationID( deviceIntf, &locationID ) == 0) {
[thisDevice setLocationID:locationID];
}
// Get the connection speed for this device
if (GetDeviceSpeed( deviceIntf, &speed ) == 0) {
[thisDevice setSpeed:speed];
}
// Get the device address for this device
if (GetDeviceAddress( deviceIntf, &address ) == 0) {
[thisDevice setAddress:address];
}
// Set the name of the device (this is what will be shown in the UI)
[thisDevice setDeviceName:
[NSString stringWithFormat:@" (speed == kUSBDeviceSpeedHigh ? "High" : (speed == kUSBDeviceSpeedLow ? "Low" : "Full")),
address,
locationID]];
error = GetDescriptor(deviceIntf, kUSBDeviceDesc, 0, &dev, sizeof(dev));
if (error == kIOReturnNotResponding)
{
// The device did not respond to a request for its device descriptor, probably because it was suspended. Attempt to resume it and
// later on suspend it again.
needToSuspend = TRUE;
error = SuspendDevice(deviceIntf,false);
if ( error == kIOReturnSuccess )
{
error = GetDescriptor(deviceIntf, kUSBDeviceDesc, 0, &dev, sizeof(dev));
}
}
if ( error == kIOReturnSuccess )
{
int iconfig;
[DecodeDeviceDescriptor decodeBytes:&dev forDevice:thisDevice deviceInterface:deviceIntf wasSuspended:needToSuspend];
for (iconfig = 0; iconfig < dev.bNumConfigurations; ++iconfig) {
IOUSBConfigurationDescHeader cfgHeader;
IOUSBConfigurationDescriptor config;
// Get the Configuration descriptor. We first get just the header and later we get the full
// descriptor
error = GetDescriptor(deviceIntf, kUSBConfDesc, iconfig, &cfgHeader, sizeof(cfgHeader));
if (error != kIOReturnSuccess) {
// Set a flag to the decodeBytes descriptor indicating that we didn't get the header
//
cfgHeader.bDescriptorType = sizeof(cfgHeader);
cfgHeader.wTotalLength = 0;
[DecodeConfigurationDescriptor decodeBytes:(IOUSBConfigurationDescHeader *)&cfgHeader forDevice:thisDevice deviceInterface:deviceIntf configNumber:iconfig isOtherSpeedDesc:NO];
// Try to get the descriptor again, using the sizeof(IOUSBConfigurationDescriptor)
//
bzero(&config,sizeof(config)-1);
error = GetDescriptor(deviceIntf, kUSBConfDesc, iconfig, &config, sizeof(config)-1);
if (error != kIOReturnSuccess) {
cfgHeader.bDescriptorType = sizeof(config)-1;
cfgHeader.wTotalLength = 0;
}
else
{
cfgHeader.bLength = config.bLength;
cfgHeader.bDescriptorType = config.bDescriptorType;
cfgHeader.wTotalLength = config.wTotalLength;
}
}
[DecodeConfigurationDescriptor decodeBytes:(IOUSBConfigurationDescHeader *)&cfgHeader forDevice:thisDevice deviceInterface:deviceIntf configNumber:iconfig isOtherSpeedDesc:NO];
}
}
else
{
// This description will be shown in the UI, to the right of the device's name
[thisDevice setDeviceDescription: [NSString stringWithFormat:@"Unknown device (did not respond to inquiry - 0x }
// If the device is a hub, then dump the Hub descriptor
//
if ( dev.bDeviceClass == kUSBHubClass )
{
IOUSBHubDescriptor cfg;
len = GetClassDescriptor(deviceIntf, kUSBHUBDesc, 0, &cfg, sizeof(cfg));
if (len > 0) {
[DescriptorDecoder decodeBytes:(Byte *)&cfg forDevice:thisDevice deviceInterface:deviceIntf userInfo:NULL isOtherSpeedDesc:false];
}
}
// Check to see if the device has the "Device Qualifier" descriptor
//
if ( dev.bcdUSB >= 0x0200 ) {
IOUSBDeviceQualifierDescriptor desc;
error = GetDescriptor(deviceIntf, kUSBDeviceQualifierDesc, 0, &desc, sizeof(desc));
if (error == kIOReturnSuccess) {
[DescriptorDecoder decodeBytes:(Byte *)&desc forDevice:thisDevice deviceInterface:deviceIntf userInfo:NULL isOtherSpeedDesc:false];
// Since we have a Device Qualifier Descriptor, we can get a "Other Speed Configuration Descriptor"
// (It's the same as a regular configuration descriptor)
//
int iconfig;
for (iconfig = 0; iconfig < desc.bNumConfigurations; ++iconfig)
{
IOUSBConfigurationDescHeader cfgHeader;
IOUSBConfigurationDescriptor config;
// Get the Configuration descriptor. We first get just the header and later we get the full
// descriptor
error = GetDescriptor(deviceIntf, kUSBOtherSpeedConfDesc, iconfig, &cfgHeader, sizeof(cfgHeader));
if (error != kIOReturnSuccess) {
// Set a flag to the decodeBytes descriptor indicating that we didn't get the header
//
cfgHeader.bDescriptorType = sizeof(cfgHeader);
cfgHeader.wTotalLength = 0;
[DecodeConfigurationDescriptor decodeBytes:(IOUSBConfigurationDescHeader *)&cfgHeader forDevice:thisDevice deviceInterface:deviceIntf configNumber:iconfig isOtherSpeedDesc:YES];
// Try to get the descriptor again, using the sizeof(IOUSBConfigurationDescriptor)
//
bzero(&config,sizeof(config)-1);
error = GetDescriptor(deviceIntf, kUSBOtherSpeedConfDesc, iconfig, &config, sizeof(config)-1);
if (error != kIOReturnSuccess) {
cfgHeader.bDescriptorType = sizeof(config)-1;
cfgHeader.wTotalLength = 0;
}
else
{
cfgHeader.bLength = config.bLength;
cfgHeader.bDescriptorType = config.bDescriptorType;
cfgHeader.wTotalLength = config.wTotalLength;
}
}
[DecodeConfigurationDescriptor decodeBytes:(IOUSBConfigurationDescHeader *)&cfgHeader forDevice:thisDevice deviceInterface:deviceIntf configNumber:iconfig isOtherSpeedDesc:YES];
}
}
}
if ( needToSuspend )
error = SuspendDevice(deviceIntf,true);
[thisDevice release];
}
@end