* USBD_GetPdoRegistryParameters (implemented)
*/
+#define _USBD_
+#define NDEBUG
#include <ntddk.h>
#include <usbdi.h>
-#define NDEBUG
+#include <usbdlib.h>
#include <debug.h>
#ifndef PLUGPLAY_REGKEY_DRIVER
#define PLUGPLAY_REGKEY_DRIVER 2
#endif
-typedef struct _USBD_INTERFACE_LIST_ENTRY {
- PUSB_INTERFACE_DESCRIPTOR InterfaceDescriptor;
- PUSBD_INTERFACE_INFORMATION Interface;
-} USBD_INTERFACE_LIST_ENTRY, *PUSBD_INTERFACE_LIST_ENTRY;
NTSTATUS NTAPI
DriverEntry(PDRIVER_OBJECT DriverObject,
{
PURB Urb;
ULONG UrbSize = 0;
- ULONG InterfaceCount;
+ ULONG InterfaceCount = 0, PipeCount = 0;
ULONG InterfaceNumber, EndPointNumber;
PUSBD_INTERFACE_INFORMATION InterfaceInfo;
- for (InterfaceCount = 0;
- InterfaceList[InterfaceCount].InterfaceDescriptor != NULL;
- InterfaceCount++)
+ while(InterfaceList[InterfaceCount].InterfaceDescriptor)
{
- UrbSize += sizeof(USBD_INTERFACE_INFORMATION);
- UrbSize += (InterfaceList[InterfaceCount].InterfaceDescriptor->bNumEndpoints - 1) * sizeof(USBD_PIPE_INFORMATION);
+ // pipe count
+ PipeCount += InterfaceList[InterfaceCount].InterfaceDescriptor->bNumEndpoints;
+
+ // interface count
+ InterfaceCount++;
}
- UrbSize += sizeof(URB) + sizeof(USBD_INTERFACE_INFORMATION);
+ // size of urb
+ UrbSize = GET_SELECT_CONFIGURATION_REQUEST_SIZE(InterfaceCount, PipeCount);
+ // allocate urb
Urb = ExAllocatePool(NonPagedPool, UrbSize);
+ if (!Urb)
+ {
+ // no memory
+ return NULL;
+ }
+
+ // zero urb
RtlZeroMemory(Urb, UrbSize);
+
+ // init urb header
Urb->UrbSelectConfiguration.Hdr.Function = URB_FUNCTION_SELECT_CONFIGURATION;
- Urb->UrbSelectConfiguration.Hdr.Length = sizeof(Urb->UrbSelectConfiguration);
+ Urb->UrbSelectConfiguration.Hdr.Length = UrbSize;
Urb->UrbSelectConfiguration.ConfigurationDescriptor = ConfigurationDescriptor;
+ // init interface information
InterfaceInfo = &Urb->UrbSelectConfiguration.Interface;
for (InterfaceNumber = 0; InterfaceNumber < InterfaceCount; InterfaceNumber++)
{
+ // init interface info
InterfaceList[InterfaceNumber].Interface = InterfaceInfo;
- InterfaceInfo->Length = sizeof(USBD_INTERFACE_INFORMATION) +
- ((InterfaceList[InterfaceNumber].InterfaceDescriptor->bNumEndpoints - 1) * sizeof(USBD_PIPE_INFORMATION));
InterfaceInfo->InterfaceNumber = InterfaceList[InterfaceNumber].InterfaceDescriptor->bInterfaceNumber;
InterfaceInfo->AlternateSetting = InterfaceList[InterfaceNumber].InterfaceDescriptor->bAlternateSetting;
InterfaceInfo->NumberOfPipes = InterfaceList[InterfaceNumber].InterfaceDescriptor->bNumEndpoints;
+
+ // store length
+ InterfaceInfo->Length = GET_USBD_INTERFACE_SIZE(InterfaceList[InterfaceNumber].InterfaceDescriptor->bNumEndpoints);
+
+ // sanity check
+ //C_ASSERT(FIELD_OFFSET(USBD_INTERFACE_INFORMATION, Pipes) == 16);
+
for (EndPointNumber = 0; EndPointNumber < InterfaceInfo->NumberOfPipes; EndPointNumber++)
{
+ // init max transfer size
InterfaceInfo->Pipes[EndPointNumber].MaximumTransferSize = PAGE_SIZE;
}
+
+ // next interface info
InterfaceInfo = (PUSBD_INTERFACE_INFORMATION) ((ULONG_PTR)InterfaceInfo + InterfaceInfo->Length);
}
return CommonDescriptor;
}
- /* sanity check */
- ASSERT(CommonDescriptor->bLength);
+ if (CommonDescriptor->bLength == 0)
+ {
+ /* invalid usb descriptor */
+ return NULL;
+ }
/* move to next descriptor */
CommonDescriptor = (PUSB_COMMON_DESCRIPTOR)((ULONG_PTR)CommonDescriptor + CommonDescriptor->bLength);