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usbd.sys: Add USB descriptor parsing functions.

This commit is contained in:
Damjan Jovanovic 2010-03-18 21:29:01 +02:00 committed by Alexandre Julliard
parent a72b363ef4
commit 6e4873691c
3 changed files with 86 additions and 5 deletions
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77
dlls/usbd.sys/usbd.c
View File

@ -27,10 +27,87 @@
#include "winbase.h"
#include "winternl.h"
#include "ddk/wdm.h"
#include "ddk/usb.h"
#include "ddk/usbdlib.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(usbd);
PUSB_INTERFACE_DESCRIPTOR WINAPI USBD_ParseConfigurationDescriptorEx(
PUSB_CONFIGURATION_DESCRIPTOR ConfigurationDescriptor,
PVOID StartPosition, LONG InterfaceNumber,
LONG AlternateSetting, LONG InterfaceClass,
LONG InterfaceSubClass, LONG InterfaceProtocol )
{
/* http://blogs.msdn.com/usbcoreblog/archive/2009/12/12/
* what-is-the-right-way-to-validate-and-parse-configuration-descriptors.aspx
*/
PUSB_INTERFACE_DESCRIPTOR interface;
TRACE( "(%p, %p, %d, %d, %d, %d, %d)\n", ConfigurationDescriptor,
StartPosition, InterfaceNumber, AlternateSetting,
InterfaceClass, InterfaceSubClass, InterfaceProtocol );
interface = (PUSB_INTERFACE_DESCRIPTOR) USBD_ParseDescriptors(
ConfigurationDescriptor, ConfigurationDescriptor->wTotalLength,
StartPosition, USB_INTERFACE_DESCRIPTOR_TYPE );
while (interface != NULL)
{
if ((InterfaceNumber == -1 || interface->bInterfaceNumber == InterfaceNumber) &&
(AlternateSetting == -1 || interface->bAlternateSetting == AlternateSetting) &&
(InterfaceClass == -1 || interface->bInterfaceClass == InterfaceClass) &&
(InterfaceSubClass == -1 || interface->bInterfaceSubClass == InterfaceSubClass) &&
(InterfaceProtocol == -1 || interface->bInterfaceProtocol == InterfaceProtocol))
{
return interface;
}
interface = (PUSB_INTERFACE_DESCRIPTOR) USBD_ParseDescriptors(
ConfigurationDescriptor, ConfigurationDescriptor->wTotalLength,
interface + 1, USB_INTERFACE_DESCRIPTOR_TYPE );
}
return NULL;
}
PUSB_COMMON_DESCRIPTOR WINAPI USBD_ParseDescriptors(
PVOID DescriptorBuffer,
ULONG TotalLength,
PVOID StartPosition,
LONG DescriptorType )
{
PUSB_COMMON_DESCRIPTOR common;
TRACE( "(%p, %u, %p, %d)\n", DescriptorBuffer, TotalLength, StartPosition, DescriptorType );
for (common = (PUSB_COMMON_DESCRIPTOR)DescriptorBuffer;
((char*)common) + sizeof(USB_COMMON_DESCRIPTOR) <= ((char*)DescriptorBuffer) + TotalLength;
common = (PUSB_COMMON_DESCRIPTOR)(((char*)common) + common->bLength))
{
if (StartPosition <= (PVOID)common && common->bDescriptorType == DescriptorType)
return common;
}
return NULL;
}
ULONG WINAPI USBD_GetInterfaceLength(
PUSB_INTERFACE_DESCRIPTOR InterfaceDescriptor,
PUCHAR BufferEnd )
{
PUSB_COMMON_DESCRIPTOR common;
ULONG total = InterfaceDescriptor->bLength;
TRACE( "(%p, %p)\n", InterfaceDescriptor, BufferEnd );
for (common = (PUSB_COMMON_DESCRIPTOR)(InterfaceDescriptor + 1);
(((PUCHAR)common) + sizeof(USB_COMMON_DESCRIPTOR)) <= BufferEnd &&
common->bDescriptorType != USB_INTERFACE_DESCRIPTOR_TYPE;
common = (PUSB_COMMON_DESCRIPTOR)(((char*)common) + common->bLength))
{
total += common->bLength;
}
return total;
}
NTSTATUS WINAPI DriverEntry( DRIVER_OBJECT *driver, UNICODE_STRING *path )
{
TRACE( "(%p, %s)\n", driver, debugstr_w(path->Buffer) );

10
dlls/usbd.sys/usbd.sys.spec
View File

@ -1,6 +1,6 @@
@ stub USBD_CreateConfigurationRequestEx
@ stub USBD_ParseConfigurationDescriptorEx
@ stub USBD_ParseDescriptors
@ stdcall USBD_ParseConfigurationDescriptorEx(ptr ptr long long long long long)
@ stdcall USBD_ParseDescriptors(ptr long ptr long)
@ stub USBD_AllocateDeviceName
@ stub USBD_CalculateUsbBandwidth
@ stub USBD_CompleteRequest
@ -14,15 +14,15 @@
@ stub USBD_FreeDeviceMutex
@ stub USBD_FreeDeviceName
@ stub USBD_GetDeviceInformation
@ stub USBD_GetInterfaceLength
@ stdcall USBD_GetInterfaceLength(ptr ptr)
@ stub USBD_GetPdoRegistryParameter
@ stub USBD_GetSuspendPowerState
@ stub USBD_GetUSBDIVersion
@ stub USBD_InitializeDevice
@ stub USBD_MakePdoName
@ stub USBD_ParseConfigurationDescriptor
@ stub _USBD_ParseConfigurationDescriptorEx@28
@ stub _USBD_ParseDescriptors@16
@ stdcall _USBD_ParseConfigurationDescriptorEx@28(ptr ptr long long long long long) USBD_ParseConfigurationDescriptorEx
@ stdcall _USBD_ParseDescriptors@16(ptr long ptr long) USBD_ParseDescriptors
@ stub USBD_QueryBusTime
@ stub USBD_RegisterHcDeviceCapabilities
@ stub USBD_RegisterHcFilter

4
include/ddk/usbdlib.h
View File

@ -25,4 +25,8 @@ typedef struct _USBD_INTERFACE_LIST_ENTRY {
} USBD_INTERFACE_LIST_ENTRY;
typedef struct _USBD_INTERFACE_LIST_ENTRY *PUSBD_INTERFACE_LIST_ENTRY;
PUSB_INTERFACE_DESCRIPTOR WINAPI USBD_ParseConfigurationDescriptorEx(PUSB_CONFIGURATION_DESCRIPTOR,PVOID,LONG,LONG,LONG,LONG,LONG);
ULONG WINAPI USBD_GetInterfaceLength(PUSB_INTERFACE_DESCRIPTOR,PUCHAR);
PUSB_COMMON_DESCRIPTOR WINAPI USBD_ParseDescriptors(PVOID,ULONG,PVOID,LONG);
#endif