event.c File Reference

#include "precomp.h"
#include <debug.h>

Include dependency graph for event.c:

Go to the source code of this file.

Macros
#define	NDEBUG

Functions
static VOID	ProcessTargetDeviceEvent (_In_ PPLUGPLAY_EVENT_BLOCK PnpEvent)
static VOID	ProcessDeviceClassChangeEvent (_In_ PPLUGPLAY_EVENT_BLOCK PnpEvent)
static VOID	ProcessDeviceInstallEvent (_In_ PPLUGPLAY_EVENT_BLOCK PnpEvent)
DWORD WINAPI	PnpEventThread (_In_ LPVOID lpParameter)

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 33 of file event.c.

Function Documentation

PnpEventThread()

DWORD WINAPI PnpEventThread

(

_In_ LPVOID

lpParameter

)

Definition at line 238 of file event.c.

{
    PLUGPLAY_CONTROL_USER_RESPONSE_DATA ResponseData = {0, 0, 0, 0};
    DWORD dwRet = ERROR_SUCCESS;
    NTSTATUS Status;
    PPLUGPLAY_EVENT_BLOCK PnpEvent, NewPnpEvent;
    ULONG PnpEventSize;
 
    UNREFERENCED_PARAMETER(lpParameter);
 
    PnpEventSize = 0x1000;
    PnpEvent = HeapAlloc(GetProcessHeap(), 0, PnpEventSize);
    if (PnpEvent == NULL)
        return ERROR_OUTOFMEMORY;
 
    for (;;)
    {
        DPRINT("Calling NtGetPlugPlayEvent()\n");
 
        /* Wait for the next PnP event */
        Status = NtGetPlugPlayEvent(0, 0, PnpEvent, PnpEventSize);
 
        /* Resize the buffer for the PnP event if it's too small */
        if (Status == STATUS_BUFFER_TOO_SMALL)
        {
            PnpEventSize += 0x400;
            NewPnpEvent = HeapReAlloc(GetProcessHeap(), 0, PnpEvent, PnpEventSize);
            if (NewPnpEvent == NULL)
            {
                dwRet = ERROR_OUTOFMEMORY;
                break;
            }
            PnpEvent = NewPnpEvent;
            continue;
        }
 
        if (!NT_SUCCESS(Status))
        {
            DPRINT1("NtGetPlugPlayEvent() failed (Status 0x%08lx)\n", Status);
            break;
        }
 
        /* Process the PnP event */
        DPRINT("Received PnP Event\n");
        switch (PnpEvent->EventCategory)
        {
//            case HardwareProfileChangeEvent:
 
            case TargetDeviceChangeEvent:
                ProcessTargetDeviceEvent(PnpEvent);
                break;
 
            case DeviceClassChangeEvent:
                ProcessDeviceClassChangeEvent(PnpEvent);
                break;
 
//            case CustomDeviceEvent:
 
            case DeviceInstallEvent:
                ProcessDeviceInstallEvent(PnpEvent);
                break;
 
//            case DeviceArrivalEvent:
//            case PowerEvent:
//            case VetoEvent:
//            case BlockedDriverEvent:
 
            default:
                DPRINT1("Unsupported Event Category: %lu\n", PnpEvent->EventCategory);
                break;
        }
 
        /* Dequeue the current PnP event and signal the next one */
        Status = NtPlugPlayControl(PlugPlayControlUserResponse,
                                   &ResponseData,
                                   sizeof(ResponseData));
        if (!NT_SUCCESS(Status))
        {
            DPRINT1("NtPlugPlayControl(PlugPlayControlUserResponse) failed (Status 0x%08lx)\n", Status);
            break;
        }
    }
 
    HeapFree(GetProcessHeap(), 0, PnpEvent);
 
    return dwRet;
}

Referenced by ServiceMain().

ProcessDeviceClassChangeEvent()

static VOID ProcessDeviceClassChangeEvent ( _In_ PPLUGPLAY_EVENT_BLOCK  PnpEvent )

static

Definition at line 118 of file event.c.

{
    RPC_STATUS RpcStatus;
    PLIST_ENTRY Current;
    PNOTIFY_ENTRY pNotifyData;
    PDEV_BROADCAST_DEVICEINTERFACE_W pEventData;
    DWORD dwSize;
    DWORD dwEventType;
 
    DPRINT("ProcessDeviceClassChangeEvent(%p)\n", PnpEvent);
    DPRINT("SymbolicLink: %S\n", PnpEvent->DeviceClass.SymbolicLinkName);
    DPRINT("ClassGuid: {%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X}\n",
           PnpEvent->DeviceClass.ClassGuid.Data1, PnpEvent->DeviceClass.ClassGuid.Data2, PnpEvent->DeviceClass.ClassGuid.Data3,
           PnpEvent->DeviceClass.ClassGuid.Data4[0], PnpEvent->DeviceClass.ClassGuid.Data4[1], PnpEvent->DeviceClass.ClassGuid.Data4[2],
           PnpEvent->DeviceClass.ClassGuid.Data4[3], PnpEvent->DeviceClass.ClassGuid.Data4[4], PnpEvent->DeviceClass.ClassGuid.Data4[5],
           PnpEvent->DeviceClass.ClassGuid.Data4[6], PnpEvent->DeviceClass.ClassGuid.Data4[7]);
 
    RtlAcquireResourceShared(&NotificationListLock, TRUE);
 
    Current = NotificationListHead.Flink;
    while (Current != &NotificationListHead)
    {
        pNotifyData = CONTAINING_RECORD(Current, NOTIFY_ENTRY, ListEntry);
        if ((pNotifyData->dwType == CLASS_NOTIFICATION) &&
            ((pNotifyData->ulFlags & DEVICE_NOTIFY_ALL_INTERFACE_CLASSES) ||
             (UuidEqual(&PnpEvent->DeviceClass.ClassGuid, &pNotifyData->ClassGuid, &RpcStatus))))
        {
            if (UuidEqual(&PnpEvent->EventGuid, (UUID*)&GUID_DEVICE_INTERFACE_ARRIVAL, &RpcStatus))
            {
                DPRINT("Interface arrival: %S\n", PnpEvent->DeviceClass.SymbolicLinkName);
                dwEventType = DBT_DEVICEARRIVAL;
            }
            else if (UuidEqual(&PnpEvent->EventGuid, (UUID*)&GUID_DEVICE_INTERFACE_REMOVAL, &RpcStatus))
            {
                DPRINT("Interface removal: %S\n", PnpEvent->DeviceClass.SymbolicLinkName);
                dwEventType = DBT_DEVICEREMOVECOMPLETE;
            }
            else
            {
                dwEventType = 0;
            }
 
            dwSize = sizeof(DEV_BROADCAST_DEVICEINTERFACE_W) + wcslen(PnpEvent->DeviceClass.SymbolicLinkName) * sizeof(WCHAR);
            pEventData = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, dwSize);
            if (pEventData)
            {
                pEventData->dbcc_size = dwSize;
                pEventData->dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;
                CopyMemory(&pEventData->dbcc_classguid, &PnpEvent->DeviceClass.ClassGuid, sizeof(GUID));
                wcscpy(pEventData->dbcc_name, PnpEvent->DeviceClass.SymbolicLinkName);
            }
 
            if ((pNotifyData->ulFlags & DEVICE_NOTIFY_SERVICE_HANDLE) == DEVICE_NOTIFY_WINDOW_HANDLE)
            {
                SendMessageW((HANDLE)pNotifyData->hRecipient, WM_DEVICECHANGE, (WPARAM)dwEventType, (LPARAM)pEventData);
            }
            else if ((pNotifyData->ulFlags & DEVICE_NOTIFY_SERVICE_HANDLE) == DEVICE_NOTIFY_SERVICE_HANDLE)
            {
                I_ScSendPnPMessage((SERVICE_STATUS_HANDLE)pNotifyData->hRecipient,
                                   SERVICE_CONTROL_DEVICEEVENT,
                                   dwEventType,
                                   pEventData);
            }
 
            if (pEventData)
                HeapFree(GetProcessHeap(), 0, pEventData);
        }
 
        Current = Current->Flink;
    }
 
    RtlReleaseResource(&NotificationListLock);
}

Referenced by PnpEventThread().

ProcessDeviceInstallEvent()

static VOID ProcessDeviceInstallEvent ( _In_ PPLUGPLAY_EVENT_BLOCK  PnpEvent )

static

Definition at line 196 of file event.c.

{
    DeviceInstallParams* Params;
    DWORD len;
    DWORD DeviceIdLength;
//    DWORD dwRecipient;
 
    DPRINT("ProcessDeviceInstallEvent(%p)\n", PnpEvent);
    DPRINT("Device enumerated: %S\n", PnpEvent->InstallDevice.DeviceId);
 
    DeviceIdLength = lstrlenW(PnpEvent->InstallDevice.DeviceId);
    if (DeviceIdLength)
    {
        /* Allocate a new device-install event */
        len = FIELD_OFFSET(DeviceInstallParams, DeviceIds) + (DeviceIdLength + 1) * sizeof(WCHAR);
        Params = HeapAlloc(GetProcessHeap(), 0, len);
        if (Params)
        {
            wcscpy(Params->DeviceIds, PnpEvent->InstallDevice.DeviceId);
 
            /* Queue the event (will be dequeued by DeviceInstallThread) */
            WaitForSingleObject(hDeviceInstallListMutex, INFINITE);
            InsertTailList(&DeviceInstallListHead, &Params->ListEntry);
            ReleaseMutex(hDeviceInstallListMutex);
 
            SetEvent(hDeviceInstallListNotEmpty);
 
//            dwRecipient = BSM_ALLDESKTOPS | BSM_APPLICATIONS;
//            BroadcastSystemMessageW(BSF_POSTMESSAGE,
//                                    &dwRecipient,
//                                    WM_DEVICECHANGE,
//                                    DBT_DEVNODES_CHANGED,
//                                    0);
            SendMessageW(HWND_BROADCAST, WM_DEVICECHANGE, DBT_DEVNODES_CHANGED, 0);
        }
    }
}

Referenced by PnpEventThread().

ProcessTargetDeviceEvent()

static VOID ProcessTargetDeviceEvent ( _In_ PPLUGPLAY_EVENT_BLOCK  PnpEvent )

static

Definition at line 40 of file event.c.

{
    RPC_STATUS RpcStatus;
 
    DPRINT("ProcessTargetDeviceEvent(%p)\n", PnpEvent);
 
    if (UuidEqual(&PnpEvent->EventGuid, (UUID*)&GUID_DEVICE_ARRIVAL, &RpcStatus))
    {
//        DWORD dwRecipient;
 
        DPRINT("Device arrival: %S\n", PnpEvent->TargetDevice.DeviceIds);
 
//       dwRecipient = BSM_ALLDESKTOPS | BSM_APPLICATIONS;
//       BroadcastSystemMessageW(BSF_POSTMESSAGE,
//                               &dwRecipient,
//                               WM_DEVICECHANGE,
//                               DBT_DEVNODES_CHANGED,
//                               0);
        SendMessageW(HWND_BROADCAST, WM_DEVICECHANGE, DBT_DEVNODES_CHANGED, 0);
    }
    else if (UuidEqual(&PnpEvent->EventGuid, (UUID*)&GUID_DEVICE_EJECT_VETOED, &RpcStatus))
    {
        DPRINT1("Eject vetoed: %S\n", PnpEvent->TargetDevice.DeviceIds);
    }
    else if (UuidEqual(&PnpEvent->EventGuid, (UUID*)&GUID_DEVICE_KERNEL_INITIATED_EJECT, &RpcStatus))
    {
        DPRINT1("Kernel initiated eject: %S\n", PnpEvent->TargetDevice.DeviceIds);
    }
    else if (UuidEqual(&PnpEvent->EventGuid, (UUID*)&GUID_DEVICE_SAFE_REMOVAL, &RpcStatus))
    {
//        DWORD dwRecipient;
 
        DPRINT1("Safe removal: %S\n", PnpEvent->TargetDevice.DeviceIds);
 
//        dwRecipient = BSM_ALLDESKTOPS | BSM_APPLICATIONS;
//        BroadcastSystemMessageW(BSF_POSTMESSAGE,
//                                &dwRecipient,
//                                WM_DEVICECHANGE,
//                                DBT_DEVNODES_CHANGED,
//                                0);
        SendMessageW(HWND_BROADCAST, WM_DEVICECHANGE, DBT_DEVNODES_CHANGED, 0);
    }
    else if (UuidEqual(&PnpEvent->EventGuid, (UUID*)&GUID_DEVICE_SURPRISE_REMOVAL, &RpcStatus))
    {
//        DWORD dwRecipient;
 
        DPRINT1("Surprise removal: %S\n", PnpEvent->TargetDevice.DeviceIds);
 
//        dwRecipient = BSM_ALLDESKTOPS | BSM_APPLICATIONS;
//        BroadcastSystemMessageW(BSF_POSTMESSAGE,
//                                &dwRecipient,
//                                WM_DEVICECHANGE,
//                                DBT_DEVNODES_CHANGED,
//                                0);
        SendMessageW(HWND_BROADCAST, WM_DEVICECHANGE, DBT_DEVNODES_CHANGED, 0);
    }
    else if (UuidEqual(&PnpEvent->EventGuid, (UUID*)&GUID_DEVICE_REMOVAL_VETOED, &RpcStatus))
    {
        DPRINT1("Removal vetoed: %S\n", PnpEvent->TargetDevice.DeviceIds);
    }
    else if (UuidEqual(&PnpEvent->EventGuid, (UUID*)&GUID_DEVICE_REMOVE_PENDING, &RpcStatus))
    {
        DPRINT1("Removal pending: %S\n", PnpEvent->TargetDevice.DeviceIds);
    }
    else
    {
        DPRINT1("Unknown event, GUID {%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X}\n",
                PnpEvent->EventGuid.Data1, PnpEvent->EventGuid.Data2, PnpEvent->EventGuid.Data3,
                PnpEvent->EventGuid.Data4[0], PnpEvent->EventGuid.Data4[1], PnpEvent->EventGuid.Data4[2],
                PnpEvent->EventGuid.Data4[3], PnpEvent->EventGuid.Data4[4], PnpEvent->EventGuid.Data4[5],
                PnpEvent->EventGuid.Data4[6], PnpEvent->EventGuid.Data4[7]);
    }
}

Referenced by PnpEventThread().