Source code of Windows XP (NT5)
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203 lines
6.9 KiB

#include "pch.h"
#pragma hdrstop
#include <ndisguid.h>
#include "afilexp.h"
#include "edc.h"
#include "lm.h"
#include "nceh.h"
#include "ncerror.h"
#include "ncmisc.h"
#include "ncnetcfg.h"
#include "ncreg.h"
#include "ncsvc.h"
#include "ncsetup.h"
#include "ncatlui.h"
#include "netcfgn.h"
#include "netsetup.h"
#include "nslog.h"
#include "nsres.h"
#include "resource.h"
#include "upgrade.h"
#include "windns.h"
#include "winstall.h"
#include <hnetcfg.h>
#include "icsupgrd.h"
static const WCHAR szBefore[] = L"Before";
static const WCHAR szWMI[] = L"WMI";
static const WCHAR szAfter[] = L"After";
void DumpDependencyList(
const WCHAR * Name,
PWCHAR List
)
{
PWCHAR p;
TraceTag(ttidWmi,
"%ws Dependency List",
Name);
p = List;
while (*p != 0)
{
TraceTag(ttidWmi,
" %ws",
p);
while (*p++ != 0) ;
}
}
void FixWmiServiceDependencies(
const WCHAR *ServiceName
)
{
SC_HANDLE ScmHandle, ServiceHandle;
LPQUERY_SERVICE_CONFIG Config;
PUCHAR Buffer;
ULONG SizeNeeded = sizeof(QUERY_SERVICE_CONFIG) + 256*sizeof(TCHAR);
PWCHAR p, pSrc, pDest;
ULONG Bytes;
BOOLEAN Working;
TraceTag(ttidWmi,
"Entering FixWmiServiceDependcies for %ws...",
ServiceName);
ScmHandle = OpenSCManager(NULL,
NULL,
SC_MANAGER_ALL_ACCESS);
if (ScmHandle != NULL)
{
ServiceHandle = OpenService(ScmHandle,
ServiceName,
SERVICE_ALL_ACCESS);
if (ServiceHandle != NULL)
{
Working = TRUE;
do
{
Buffer = (PUCHAR)MemAlloc(SizeNeeded);
if (Buffer != NULL)
{
Config = (LPQUERY_SERVICE_CONFIG)Buffer;
if (QueryServiceConfig(ServiceHandle,
Config,
SizeNeeded,
&SizeNeeded))
{
p = Config->lpDependencies;
DumpDependencyList(szBefore, Config->lpDependencies);
while (*p != 0)
{
if (_wcsicmp(p, szWMI) == 0)
{
//
// We found the WMI dependency on the
// list
//
TraceTag(ttidWmi,
"FixWmiServiceDependcies: Found WMI Dependency at %p",
p);
pDest = p;
//
// Advance to next string
//
while (*p++ != 0) ;
//
// Figure out number of byes left at
// end of string
//
pSrc = p;
while ((*p != 0) || (*(p+1) != 0))
{
p++;
}
Bytes = ((p + 2) - pSrc) * sizeof(TCHAR);
TraceTag(ttidWmi,
"FixWmiServiceDependcies: Copy 0x%x bytes from %ws to %ws",
Bytes,
pSrc,
pDest);
memcpy(pDest, pSrc, Bytes);
DumpDependencyList(szAfter, Config->lpDependencies);
if (! ChangeServiceConfig(ServiceHandle,
SERVICE_NO_CHANGE,
SERVICE_NO_CHANGE,
SERVICE_NO_CHANGE,
NULL,
NULL,
NULL,
Config->lpDependencies,
NULL,
NULL,
NULL))
{
//
// This is bad
//
TraceError(
"FixWmiServiceDependcies: ChangeServiceConfig failed",
GetLastError());
}
} else {
//
// Advance to next string in list
//
TraceTag(ttidWmi,
"FixWmiServiceDependcies: skipping dependency %ws",
p);
while (*p++ != 0) ;
}
}
Working = FALSE;
} else {
if (GetLastError() != ERROR_INSUFFICIENT_BUFFER)
{
//
// This is bad, but what can we do ??
//
Working = FALSE;
TraceError(
"FixWmiServiceDependcies: QueryServiceConfig failed",
GetLastError());
}
}
MemFree(Buffer);
} else {
//
// This is bad, but what can we do ??
//
TraceTag(ttidWmi,
"FixWmiServiceDependcies: BufferAlloc for %d failed",
SizeNeeded);
Working = FALSE;
}
} while(Working);
CloseServiceHandle(ServiceHandle);
} else {
TraceError(
"FixWmiServiceDependcies: OpenService failed",
GetLastError());
}
CloseServiceHandle(ScmHandle);
} else {
TraceError(
"FixWmiServiceDependcies: OpenSCManager failed",
GetLastError());
}
}