模仿USBCCGP对USB复合设备功能分析打印输出

源代码如下：

VOID
DumpFunctionDescriptor(
    IN PUSBC_FUNCTION_DESCRIPTOR FunctionDescriptor,
    IN ULONG FunctionDescriptorCount)
{
    ULONG Index, SubIndex;

    DPRINT("FunctionCount %lu\n", FunctionDescriptorCount);
    for (Index = 0; Index < FunctionDescriptorCount; Index++)
    {
        DPRINT("Function %lu\n", Index);
        DPRINT("FunctionNumber %lu\n", FunctionDescriptor[Index].FunctionNumber);
        DPRINT("HardwareId %S\n", FunctionDescriptor[Index].HardwareId.Buffer);
        DPRINT("CompatibleId %S\n", FunctionDescriptor[Index].CompatibleId.Buffer);
        DPRINT("FunctionDescription %wZ\n", &FunctionDescriptor[Index].FunctionDescription);
        DPRINT("NumInterfaces %lu\n", FunctionDescriptor[Index].NumberOfInterfaces);

        for (SubIndex = 0; SubIndex < FunctionDescriptor[Index].NumberOfInterfaces; SubIndex++)
        {
            DPRINT(" Index %lu Interface %p\n", SubIndex, FunctionDescriptor[Index].InterfaceDescriptorList[SubIndex]);
            DPRINT(" Index %lu Interface InterfaceNumber %x\n", SubIndex, FunctionDescriptor[Index].InterfaceDescriptorList[SubIndex]->bInterfaceNumber);
            DPRINT(" Index %lu Interface Alternate %x\n", SubIndex, FunctionDescriptor[Index].InterfaceDescriptorList[SubIndex]->bAlternateSetting);
            DPRINT(" Index %lu bLength %x\n", SubIndex, FunctionDescriptor[Index].InterfaceDescriptorList[SubIndex]->bLength);
            DPRINT(" Index %lu bDescriptorType %x\n", SubIndex, FunctionDescriptor[Index].InterfaceDescriptorList[SubIndex]->bDescriptorType);
            DPRINT(" Index %lu bInterfaceNumber %x\n", SubIndex, FunctionDescriptor[Index].InterfaceDescriptorList[SubIndex]->bInterfaceNumber);
            DPRINT(" Index %lu bAlternateSetting %x\n", SubIndex, FunctionDescriptor[Index].InterfaceDescriptorList[SubIndex]->bAlternateSetting);
            DPRINT(" Index %lu bNumEndpoints %x\n", SubIndex, FunctionDescriptor[Index].InterfaceDescriptorList[SubIndex]->bNumEndpoints);
            DPRINT(" Index %lu bInterfaceClass %x\n", SubIndex, FunctionDescriptor[Index].InterfaceDescriptorList[SubIndex]->bInterfaceClass);
            DPRINT(" Index %lu bInterfaceSubClass %x\n", SubIndex, FunctionDescriptor[Index].InterfaceDescriptorList[SubIndex]->bInterfaceSubClass);
            DPRINT(" Index %lu bInterfaceProtocol %x\n", SubIndex, FunctionDescriptor[Index].InterfaceDescriptorList[SubIndex]->bInterfaceProtocol);
            DPRINT(" Index %lu iInterface %x\n", SubIndex, FunctionDescriptor[Index].InterfaceDescriptorList[SubIndex]->iInterface);
        }
    }
}

打印输出结果如下：

3: kd> p
FunctionCount 2
Function 0
FunctionNumber 0
HardwareId USB\VID_1539&PID_0100&Rev_0409&MI_00
CompatibleId USB\Class_03&SubClass_00&Prot_ff
FunctionDescription xxx
NumInterfaces 1
 Index 0 Interface FFFFDF0869505149
 Index 0 Interface InterfaceNumber 0
 Index 0 Interface Alternate 0
 Index 0 bLength 9
 Index 0 bDescriptorType 4
 Index 0 bInterfaceNumber 0
 Index 0 bAlternateSetting 0
 Index 0 bNumEndpoints 2
 Index 0 bInterfaceClass 3
 Index 0 bInterfaceSubClass 0
 Index 0 bInterfaceProtocol ff
 Index 0 iInterface 8
Function 1
FunctionNumber 1
HardwareId USB\VID_1539&PID_0100&Rev_0409&MI_01
CompatibleId USB\Class_0e&SubClass_03&Prot_00
FunctionDescription xxx
NumInterfaces 2
 Index 0 Interface FFFFDF0869505171
 Index 0 Interface InterfaceNumber 1
 Index 0 Interface Alternate 0
 Index 0 bLength 9
 Index 0 bDescriptorType 4
 Index 0 bInterfaceNumber 1
 Index 0 bAlternateSetting 0
 Index 0 bNumEndpoints 1
 Index 0 bInterfaceClass e
 Index 0 bInterfaceSubClass 1
 Index 0 bInterfaceProtocol 0
 Index 0 iInterface a
 Index 1 Interface FFFFDF08695051D5
 Index 1 Interface InterfaceNumber 2
 Index 1 Interface Alternate 0
 Index 1 bLength 9
 Index 1 bDescriptorType 4
 Index 1 bInterfaceNumber 2
 Index 1 bAlternateSetting 0
 Index 1 bNumEndpoints 1
 Index 1 bInterfaceClass e
 Index 1 bInterfaceSubClass 2
 Index 1 bInterfaceProtocol 0
 Index 1 iInterface b