877 lines
25 KiB
C++
877 lines
25 KiB
C++
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//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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//
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// Copyright (C) Microsoft Corporation, 1997 - 2000
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//
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// File: miscutil.c
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//
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//--------------------------------------------------------------------------
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#include "HotPlug.h"
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#include <initguid.h>
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#include <ntddstor.h>
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#include <wdmguid.h>
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LPTSTR
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FormatString(
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LPCTSTR format,
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...
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)
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{
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LPTSTR str = NULL;
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va_list arglist;
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va_start(arglist, format);
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if (FormatMessage(FORMAT_MESSAGE_FROM_STRING | FORMAT_MESSAGE_ALLOCATE_BUFFER,
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format,
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0,
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MAKELANGID(LANG_NEUTRAL, SUBLANG_NEUTRAL),
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(LPTSTR)&str,
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0,
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&arglist
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) == 0) {
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str = NULL;
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}
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va_end(arglist);
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return str;
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}
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PTCHAR
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BuildLocationInformation(
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DEVINST DevInst,
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HMACHINE hMachine
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)
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{
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CONFIGRET ConfigRet;
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ULONG ulSize;
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DWORD UINumber;
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PTCHAR Location = NULL;
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PTCHAR ParentName;
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DEVINST DevInstParent;
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int BusLocationStringId;
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TCHAR szBuffer[MAX_PATH];
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TCHAR UINumberDescFormat[MAX_PATH];
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TCHAR szFormat[MAX_PATH];
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HKEY hKey;
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DWORD Type = REG_SZ;
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szBuffer[0] = TEXT('\0');
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//
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// We will first get any LocationInformation for the device. This will either
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// be in the LocationInformationOverride value in the devices driver (software) key
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// or if that is not present we will look for the LocationInformation value in
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// the devices device (hardware) key.
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//
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ulSize = sizeof(szBuffer);
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if (CR_SUCCESS == CM_Open_DevNode_Key_Ex(DevInst,
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KEY_READ,
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0,
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RegDisposition_OpenExisting,
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&hKey,
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CM_REGISTRY_SOFTWARE,
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hMachine
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)) {
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RegQueryValueEx(hKey,
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REGSTR_VAL_LOCATION_INFORMATION_OVERRIDE,
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NULL,
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&Type,
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(const PBYTE)szBuffer,
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&ulSize
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);
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RegCloseKey(hKey);
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}
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//
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// If the buffer is empty then we didn't get the LocationInformationOverride
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// value in the device's software key. So, we will see if their is a
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// LocationInformation value in the device's hardware key.
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//
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if (szBuffer[0] == TEXT('\0')) {
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//
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// Get the LocationInformation for this device.
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//
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ulSize = sizeof(szBuffer);
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CM_Get_DevNode_Registry_Property_Ex(DevInst,
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CM_DRP_LOCATION_INFORMATION,
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NULL,
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szBuffer,
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&ulSize,
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0,
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hMachine
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);
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}
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//
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// UINumber has precedence over all other location information so check if this
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// device has a UINumber
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//
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ulSize = sizeof(UINumber);
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if ((CM_Get_DevNode_Registry_Property_Ex(DevInst,
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CM_DRP_UI_NUMBER,
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NULL,
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&UINumber,
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&ulSize,
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0,
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hMachine
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) == CR_SUCCESS) &&
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(ulSize > 0)) {
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UINumberDescFormat[0] = TEXT('\0');
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ulSize = sizeof(UINumberDescFormat);
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//
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// Get the UINumber description format string from the device's parent,
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// if there is one, otherwise default to 'Location %1'
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if ((CM_Get_Parent_Ex(&DevInstParent, DevInst, 0, hMachine) == CR_SUCCESS) &&
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(CM_Get_DevNode_Registry_Property_Ex(DevInstParent,
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CM_DRP_UI_NUMBER_DESC_FORMAT,
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NULL,
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UINumberDescFormat,
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&ulSize,
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0,
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hMachine) == CR_SUCCESS) &&
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*UINumberDescFormat) {
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} else {
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LoadString(hHotPlug, IDS_UI_NUMBER_DESC_FORMAT, UINumberDescFormat, sizeof(UINumberDescFormat)/sizeof(TCHAR));
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}
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//
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// Prepend "at " to the begining of the UINumber string.
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//
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LoadString(hHotPlug, IDS_AT, szFormat, sizeof(szFormat)/sizeof(TCHAR));
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lstrcat(szFormat, UINumberDescFormat);
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//
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// Fill in the UINumber string
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//
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Location = FormatString(szFormat, UINumber);
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}
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//
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// We don't have a UINumber but we do have LocationInformation
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//
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else if (*szBuffer) {
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LoadString(hHotPlug, IDS_LOCATION, szFormat, sizeof(szFormat)/sizeof(TCHAR));
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Location = (PTCHAR)LocalAlloc(LPTR, lstrlen(szBuffer)*sizeof(TCHAR) + sizeof(szFormat) + sizeof(TCHAR));
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if (Location) {
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wsprintf(Location, szFormat, szBuffer);
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}
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}
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//
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// We don't have a UINumber or LocationInformation so we need to get a description
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// of the parent of this device.
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//
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else {
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ConfigRet = CM_Get_Parent_Ex(&DevInstParent, DevInst, 0, hMachine);
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if (ConfigRet == CR_SUCCESS) {
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//
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// Try the registry for FRIENDLYNAME
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//
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ulSize = sizeof(szBuffer);
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ConfigRet = CM_Get_DevNode_Registry_Property_Ex(DevInstParent,
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CM_DRP_FRIENDLYNAME,
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NULL,
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szBuffer,
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&ulSize,
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0,
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hMachine
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);
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if (ConfigRet != CR_SUCCESS || !*szBuffer) {
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//
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// Try the registry for DEVICEDESC
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//
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ulSize = sizeof(szBuffer);
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ConfigRet = CM_Get_DevNode_Registry_Property_Ex(DevInstParent,
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CM_DRP_DEVICEDESC,
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NULL,
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szBuffer,
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&ulSize,
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0,
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hMachine
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);
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if (ConfigRet != CR_SUCCESS || !*szBuffer) {
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GUID ClassGuid;
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//
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// Initialize ClassGuid to GUID_NULL
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//
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CopyMemory(&ClassGuid,
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&GUID_NULL,
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sizeof(GUID)
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);
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//
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// Try the registry for CLASSNAME
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//
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ulSize = sizeof(szBuffer);
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ConfigRet = CM_Get_DevNode_Registry_Property_Ex(DevInstParent,
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CM_DRP_CLASSGUID,
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NULL,
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szBuffer,
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&ulSize,
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0,
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hMachine
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);
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if (ConfigRet == CR_SUCCESS) {
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pSetupGuidFromString(szBuffer, &ClassGuid);
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}
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if (!IsEqualGUID(ClassGuid, GUID_NULL) &&
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!IsEqualGUID(ClassGuid, GUID_DEVCLASS_UNKNOWN))
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{
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ulSize = sizeof(szBuffer);
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ConfigRet = CM_Get_DevNode_Registry_Property_Ex(DevInstParent,
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CM_DRP_CLASS,
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NULL,
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szBuffer,
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&ulSize,
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0,
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hMachine
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);
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}
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else {
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ConfigRet = ~CR_SUCCESS;
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}
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}
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}
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}
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if (*szBuffer) {
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LoadString(hHotPlug, IDS_LOCATION_NOUINUMBER, szFormat, sizeof(szFormat)/sizeof(TCHAR));
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Location = (PTCHAR)LocalAlloc(LPTR, lstrlen(szBuffer)*sizeof(TCHAR) + sizeof(szFormat) + sizeof(TCHAR));
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if (Location) {
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wsprintf(Location, szFormat, szBuffer);
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}
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}
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}
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return Location;
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}
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PTCHAR
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BuildFriendlyName(
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DEVINST DevInst,
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HMACHINE hMachine
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)
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{
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PTCHAR FriendlyName;
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CONFIGRET ConfigRet;
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ULONG ulSize;
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TCHAR szBuffer[MAX_PATH];
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//
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// Try the registry for FRIENDLYNAME
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//
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ulSize = sizeof(szBuffer);
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ConfigRet = CM_Get_DevNode_Registry_Property_Ex(DevInst,
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CM_DRP_FRIENDLYNAME,
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NULL,
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szBuffer,
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&ulSize,
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0,
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hMachine
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);
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if (ConfigRet != CR_SUCCESS || !*szBuffer) {
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//
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// Try the registry for DEVICEDESC
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//
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ulSize = sizeof(szBuffer);
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ConfigRet = CM_Get_DevNode_Registry_Property_Ex(DevInst,
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CM_DRP_DEVICEDESC,
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NULL,
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szBuffer,
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&ulSize,
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0,
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hMachine
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);
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if (ConfigRet != CR_SUCCESS || !*szBuffer) {
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GUID ClassGuid;
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//
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// Initialize ClassGuid to GUID_NULL
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//
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CopyMemory(&ClassGuid,
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&GUID_NULL,
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sizeof(GUID)
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);
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//
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// Try the registry for CLASSNAME
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//
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ulSize = sizeof(szBuffer);
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ConfigRet = CM_Get_DevNode_Registry_Property_Ex(DevInst,
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CM_DRP_CLASSGUID,
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NULL,
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szBuffer,
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&ulSize,
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0,
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hMachine
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);
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if (ConfigRet == CR_SUCCESS) {
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pSetupGuidFromString(szBuffer, &ClassGuid);
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}
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if (!IsEqualGUID(ClassGuid, GUID_NULL) &&
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!IsEqualGUID(ClassGuid, GUID_DEVCLASS_UNKNOWN))
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{
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ulSize = sizeof(szBuffer);
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ConfigRet = CM_Get_DevNode_Registry_Property_Ex(DevInst,
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CM_DRP_CLASS,
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NULL,
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szBuffer,
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&ulSize,
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0,
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hMachine
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);
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}
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else {
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ConfigRet = ~CR_SUCCESS;
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}
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}
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}
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if (ConfigRet == CR_SUCCESS && *szBuffer) {
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FriendlyName = (PTCHAR)LocalAlloc(LPTR, ulSize);
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if (FriendlyName) {
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memcpy(FriendlyName, szBuffer, ulSize);
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}
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}
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else {
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FriendlyName = NULL;
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}
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return FriendlyName;
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}
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|
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/* ----------------------------------------------------------------------
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* SetDlgText - Set Dialog Text Field
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*
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* Concatenates a number of string resources and does a SetWindowText()
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* for a dialog text control.
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*
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* Parameters:
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*
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* hDlg - Dialog handle
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* iControl - Dialog control ID to receive text
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* nStartString - ID of first string resource to concatenate
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* nEndString - ID of last string resource to concatenate
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*
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* Note: the string IDs must be consecutive.
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*/
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void
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SetDlgText(HWND hDlg, int iControl, int nStartString, int nEndString)
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|
|
{
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int iX;
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|
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TCHAR szText[MAX_PATH];
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|
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szText[0] = '\0';
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|
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for (iX = nStartString; iX<= nEndString; iX++) {
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|
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|
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LoadString(hHotPlug,
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||
|
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iX,
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szText + lstrlen(szText),
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||
|
|
sizeof(szText)/sizeof(TCHAR) - lstrlen(szText)
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|
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);
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||
|
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}
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|
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|
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if (iControl) {
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|
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|
||
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SetDlgItemText(hDlg, iControl, szText);
|
||
|
|
}
|
||
|
|
|
||
|
|
else {
|
||
|
|
|
||
|
|
SetWindowText(hDlg, szText);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
VOID
|
||
|
|
HotPlugPropagateMessage(
|
||
|
|
HWND hWnd,
|
||
|
|
UINT uMessage,
|
||
|
|
WPARAM wParam,
|
||
|
|
LPARAM lParam
|
||
|
|
)
|
||
|
|
{
|
||
|
|
while ((hWnd = GetWindow(hWnd, GW_CHILD))) {
|
||
|
|
|
||
|
|
SendMessage(hWnd, uMessage, wParam, lParam);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
BOOL
|
||
|
|
RemovalPermission(
|
||
|
|
void
|
||
|
|
)
|
||
|
|
{
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
int
|
||
|
|
HPMessageBox(
|
||
|
|
HWND hWnd,
|
||
|
|
int IdText,
|
||
|
|
int IdCaption,
|
||
|
|
UINT Type
|
||
|
|
)
|
||
|
|
{
|
||
|
|
TCHAR szText[MAX_PATH];
|
||
|
|
TCHAR szCaption[MAX_PATH];
|
||
|
|
|
||
|
|
if (LoadString(hHotPlug, IdText, szText, MAX_PATH) &&
|
||
|
|
LoadString(hHotPlug, IdCaption, szCaption, MAX_PATH))
|
||
|
|
{
|
||
|
|
return MessageBox(hWnd, szText, szCaption, Type);
|
||
|
|
}
|
||
|
|
|
||
|
|
return IDIGNORE;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
void
|
||
|
|
InvalidateTreeItemRect(
|
||
|
|
HWND hwndTree,
|
||
|
|
HTREEITEM hTreeItem
|
||
|
|
)
|
||
|
|
{
|
||
|
|
RECT rect;
|
||
|
|
|
||
|
|
if (hTreeItem && TreeView_GetItemRect(hwndTree, hTreeItem, &rect, FALSE)) {
|
||
|
|
|
||
|
|
InvalidateRect(hwndTree, &rect, FALSE);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
DWORD
|
||
|
|
GetHotPlugFlags(
|
||
|
|
PHKEY phKey
|
||
|
|
)
|
||
|
|
{
|
||
|
|
HKEY hKey;
|
||
|
|
LONG Error;
|
||
|
|
DWORD HotPlugFlags, cbHotPlugFlags;
|
||
|
|
|
||
|
|
Error = RegCreateKey(HKEY_CURRENT_USER, REGSTR_PATH_SYSTRAY, &hKey);
|
||
|
|
if (Error == ERROR_SUCCESS) {
|
||
|
|
|
||
|
|
cbHotPlugFlags = sizeof(HotPlugFlags);
|
||
|
|
|
||
|
|
Error = RegQueryValueEx(hKey,
|
||
|
|
szHotPlugFlags,
|
||
|
|
NULL,
|
||
|
|
NULL,
|
||
|
|
(LPBYTE)&HotPlugFlags,
|
||
|
|
&cbHotPlugFlags
|
||
|
|
);
|
||
|
|
|
||
|
|
if (phKey) {
|
||
|
|
|
||
|
|
*phKey = hKey;
|
||
|
|
}
|
||
|
|
|
||
|
|
else {
|
||
|
|
|
||
|
|
RegCloseKey(hKey);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (Error != ERROR_SUCCESS) {
|
||
|
|
|
||
|
|
HotPlugFlags = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
return HotPlugFlags;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// This function determines if the device is a boot storage device.
|
||
|
|
// We spit out a warning when users are trying to remove or disable
|
||
|
|
// a boot storage device(or a device contains a boot storage device).
|
||
|
|
//
|
||
|
|
// INPUT:
|
||
|
|
// NONE
|
||
|
|
// OUTPUT:
|
||
|
|
// TRUE if the device is a boot device
|
||
|
|
// FALSE if the device is not a boot device
|
||
|
|
LPTSTR
|
||
|
|
DevNodeToDriveLetter(
|
||
|
|
DEVINST DevInst
|
||
|
|
)
|
||
|
|
{
|
||
|
|
ULONG ulSize;
|
||
|
|
TCHAR szBuffer[MAX_PATH];
|
||
|
|
TCHAR DeviceID[MAX_DEVICE_ID_LEN];
|
||
|
|
PTSTR DriveString = NULL;
|
||
|
|
PTSTR DeviceInterface = NULL;
|
||
|
|
|
||
|
|
if (CM_Get_Device_ID_Ex(DevInst,
|
||
|
|
DeviceID,
|
||
|
|
sizeof(DeviceID)/sizeof(TCHAR),
|
||
|
|
0,
|
||
|
|
NULL
|
||
|
|
) != CR_SUCCESS) {
|
||
|
|
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
// create a device info list contains all the interface classed
|
||
|
|
// exposed by this device.
|
||
|
|
ulSize = 0;
|
||
|
|
|
||
|
|
if ((CM_Get_Device_Interface_List_Size(&ulSize,
|
||
|
|
(LPGUID)&VolumeClassGuid,
|
||
|
|
DeviceID,
|
||
|
|
0) == CR_SUCCESS) &&
|
||
|
|
(ulSize > 1) &&
|
||
|
|
((DeviceInterface = (PTSTR)LocalAlloc(LPTR, ulSize*sizeof(TCHAR))) != NULL) &&
|
||
|
|
(CM_Get_Device_Interface_List((LPGUID)&VolumeClassGuid,
|
||
|
|
DeviceID,
|
||
|
|
DeviceInterface,
|
||
|
|
ulSize,
|
||
|
|
0
|
||
|
|
) == CR_SUCCESS) &&
|
||
|
|
*DeviceInterface)
|
||
|
|
{
|
||
|
|
PTSTR devicePath, p;
|
||
|
|
TCHAR thisVolumeName[MAX_PATH];
|
||
|
|
TCHAR enumVolumeName[MAX_PATH];
|
||
|
|
TCHAR driveName[4];
|
||
|
|
ULONG length;
|
||
|
|
BOOL bResult;
|
||
|
|
|
||
|
|
length = lstrlen(DeviceInterface);
|
||
|
|
devicePath = (PTSTR)LocalAlloc(LPTR, (length + 1) * sizeof(TCHAR) + sizeof(UNICODE_NULL));
|
||
|
|
|
||
|
|
if (devicePath) {
|
||
|
|
|
||
|
|
lstrcpyn(devicePath, DeviceInterface, length + 1);
|
||
|
|
|
||
|
|
p = wcschr(&(devicePath[4]), TEXT('\\'));
|
||
|
|
|
||
|
|
if (!p) {
|
||
|
|
//
|
||
|
|
// No refstring is present in the symbolic link; add a trailing
|
||
|
|
// '\' char (as required by GetVolumeNameForVolumeMountPoint).
|
||
|
|
//
|
||
|
|
p = devicePath + length;
|
||
|
|
*p = TEXT('\\');
|
||
|
|
}
|
||
|
|
|
||
|
|
p++;
|
||
|
|
*p = UNICODE_NULL;
|
||
|
|
|
||
|
|
thisVolumeName[0] = UNICODE_NULL;
|
||
|
|
bResult = GetVolumeNameForVolumeMountPoint(devicePath,
|
||
|
|
thisVolumeName,
|
||
|
|
MAX_PATH
|
||
|
|
);
|
||
|
|
LocalFree(devicePath);
|
||
|
|
|
||
|
|
if (bResult && thisVolumeName[0]) {
|
||
|
|
|
||
|
|
driveName[1] = TEXT(':');
|
||
|
|
driveName[2] = TEXT('\\');
|
||
|
|
driveName[3] = TEXT('\0');
|
||
|
|
|
||
|
|
for (driveName[0] = TEXT('A'); driveName[0] <= TEXT('Z'); driveName[0]++) {
|
||
|
|
|
||
|
|
enumVolumeName[0] = TEXT('\0');
|
||
|
|
|
||
|
|
GetVolumeNameForVolumeMountPoint(driveName, enumVolumeName, MAX_PATH);
|
||
|
|
|
||
|
|
if (!lstrcmpi(thisVolumeName, enumVolumeName)) {
|
||
|
|
|
||
|
|
driveName[2] = TEXT('\0');
|
||
|
|
|
||
|
|
wsprintf(szBuffer, TEXT(" - (%s)"), driveName);
|
||
|
|
|
||
|
|
DriveString = (PTSTR)LocalAlloc(LPTR, (lstrlen(szBuffer) + 1) * sizeof(TCHAR));
|
||
|
|
|
||
|
|
if (DriveString) {
|
||
|
|
|
||
|
|
lstrcpy(DriveString, szBuffer);
|
||
|
|
}
|
||
|
|
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (DeviceInterface) {
|
||
|
|
|
||
|
|
LocalFree(DeviceInterface);
|
||
|
|
}
|
||
|
|
|
||
|
|
return DriveString;
|
||
|
|
}
|
||
|
|
|
||
|
|
BOOL
|
||
|
|
IsHotPlugDevice(
|
||
|
|
DEVINST DevInst,
|
||
|
|
HMACHINE hMachine
|
||
|
|
)
|
||
|
|
/**+
|
||
|
|
|
||
|
|
A device is considered a HotPlug device if the following are TRUE:
|
||
|
|
- has Capability CM_DEVCAP_REMOVABLE
|
||
|
|
- does NOT have Capability CM_DEVCAP_SURPRISEREMOVALOK
|
||
|
|
- does NOT have Capability CM_DEVCAP_DOCKDEVICE
|
||
|
|
- must be started (have the DN_STARTED devnode flag)
|
||
|
|
- unless has capability CM_DEVCAP_EJECTSUPPORTED
|
||
|
|
- or unless has capability CM_DEVCAP_RAWDEVICEOK
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
TRUE if this is a HotPlug device
|
||
|
|
FALSE if this is not a HotPlug device.
|
||
|
|
|
||
|
|
-**/
|
||
|
|
{
|
||
|
|
DWORD Capabilities;
|
||
|
|
DWORD Len;
|
||
|
|
DWORD Status, Problem;
|
||
|
|
|
||
|
|
Capabilities = Status = Problem = 0;
|
||
|
|
|
||
|
|
Len = sizeof(Capabilities);
|
||
|
|
|
||
|
|
if (CM_Get_DevNode_Registry_Property_Ex(DevInst,
|
||
|
|
CM_DRP_CAPABILITIES,
|
||
|
|
NULL,
|
||
|
|
(PVOID)&Capabilities,
|
||
|
|
&Len,
|
||
|
|
0,
|
||
|
|
hMachine) != CR_SUCCESS) {
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (CM_Get_DevNode_Status_Ex(&Status,
|
||
|
|
&Problem,
|
||
|
|
DevInst,
|
||
|
|
0,
|
||
|
|
hMachine) != CR_SUCCESS) {
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// If this device is not removable, or it is surprise removal ok, or
|
||
|
|
// it is a dock device, then it is not a hotplug device.
|
||
|
|
//
|
||
|
|
if ((!(Capabilities & CM_DEVCAP_REMOVABLE)) ||
|
||
|
|
(Capabilities & CM_DEVCAP_SURPRISEREMOVALOK) ||
|
||
|
|
(Capabilities & CM_DEVCAP_DOCKDEVICE)) {
|
||
|
|
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// We won't consider a device to be a hotplug device if it is not started,
|
||
|
|
// unless it is either RAW capabile or an eject capable device.
|
||
|
|
//
|
||
|
|
// The reason for this test is that a bus driver might set the
|
||
|
|
// CM_DEVCAP_REMOVABLE capability, but if the PDO doesn't get loaded then
|
||
|
|
// it can't set the CM_DEVCAP_SURPRISEREMOVALOK. So we won't trust the
|
||
|
|
// CM_DEVCAP_REMOVABLE capability if the PDO is not started.
|
||
|
|
//
|
||
|
|
if ((!(Capabilities & CM_DEVCAP_EJECTSUPPORTED)) &&
|
||
|
|
(!(Status & DN_STARTED))) {
|
||
|
|
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
BOOL
|
||
|
|
OpenPipeAndEventHandles(
|
||
|
|
IN LPWSTR szCmd,
|
||
|
|
OUT LPHANDLE lphHotPlugPipe,
|
||
|
|
OUT LPHANDLE lphHotPlugEvent
|
||
|
|
)
|
||
|
|
{
|
||
|
|
BOOL status = FALSE;
|
||
|
|
HANDLE hPipe = INVALID_HANDLE_VALUE;
|
||
|
|
HANDLE hEvent = NULL;
|
||
|
|
ULONG ulEventNameSize;
|
||
|
|
WCHAR szEventName[MAX_PATH];
|
||
|
|
DWORD dwBytesRead;
|
||
|
|
|
||
|
|
|
||
|
|
__try {
|
||
|
|
//
|
||
|
|
// Validate supplied arguments.
|
||
|
|
//
|
||
|
|
if (!lphHotPlugPipe || !lphHotPlugEvent) {
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Make sure that a named pipe was specified in the cmd line.
|
||
|
|
//
|
||
|
|
if(!szCmd || !*szCmd) {
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Wait for the specified named pipe to become available from the server.
|
||
|
|
//
|
||
|
|
if (!WaitNamedPipe(szCmd,
|
||
|
|
180000) // BUGBUG-2000/07/10-jamesca: How long should we wait?
|
||
|
|
) {
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Open a handle to the specified named pipe
|
||
|
|
//
|
||
|
|
hPipe = CreateFile(szCmd,
|
||
|
|
GENERIC_READ,
|
||
|
|
0,
|
||
|
|
NULL,
|
||
|
|
OPEN_EXISTING,
|
||
|
|
0,
|
||
|
|
NULL);
|
||
|
|
if (hPipe == INVALID_HANDLE_VALUE) {
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// The very first thing in the pipe should be the size of the event name.
|
||
|
|
//
|
||
|
|
if (ReadFile(hPipe,
|
||
|
|
(LPVOID)&ulEventNameSize,
|
||
|
|
sizeof(ULONG),
|
||
|
|
&dwBytesRead,
|
||
|
|
NULL)) {
|
||
|
|
|
||
|
|
ASSERT(ulEventNameSize != 0);
|
||
|
|
if ((ulEventNameSize == 0) ||
|
||
|
|
(ulEventNameSize > MAX_PATH)) {
|
||
|
|
goto clean0;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// The next thing in the pipe should be the name of the event.
|
||
|
|
//
|
||
|
|
if (!ReadFile(hPipe,
|
||
|
|
(LPVOID)&szEventName,
|
||
|
|
ulEventNameSize,
|
||
|
|
&dwBytesRead,
|
||
|
|
NULL)) {
|
||
|
|
goto clean0;
|
||
|
|
}
|
||
|
|
|
||
|
|
} else {
|
||
|
|
if (GetLastError() == ERROR_INVALID_HANDLE) {
|
||
|
|
//
|
||
|
|
// The handle to the named pipe is not valid. Make sure we don't
|
||
|
|
// try to close it on exit.
|
||
|
|
//
|
||
|
|
hPipe = INVALID_HANDLE_VALUE;
|
||
|
|
}
|
||
|
|
goto clean0;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Open a handle to the specified named event that we can set and wait on.
|
||
|
|
//
|
||
|
|
hEvent = OpenEventW(EVENT_MODIFY_STATE | SYNCHRONIZE,
|
||
|
|
FALSE,
|
||
|
|
szEventName);
|
||
|
|
if (hEvent == NULL) {
|
||
|
|
goto clean0;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// We should now have valid handles to both the pipe and the event.
|
||
|
|
//
|
||
|
|
status = TRUE;
|
||
|
|
ASSERT((hPipe != INVALID_HANDLE_VALUE) && hEvent);
|
||
|
|
|
||
|
|
|
||
|
|
clean0:
|
||
|
|
;
|
||
|
|
|
||
|
|
} __except(EXCEPTION_EXECUTE_HANDLER) {
|
||
|
|
|
||
|
|
status = FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (status) {
|
||
|
|
|
||
|
|
*lphHotPlugPipe = hPipe;
|
||
|
|
*lphHotPlugEvent = hEvent;
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
if (hPipe != INVALID_HANDLE_VALUE) {
|
||
|
|
CloseHandle(hPipe);
|
||
|
|
}
|
||
|
|
if (hEvent) {
|
||
|
|
CloseHandle(hEvent);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return status;
|
||
|
|
}
|