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advapi: Check if service really exists before bombing out in CreateService.

This commit is contained in:
Maarten Lankhorst 2008-02-21 13:16:25 -08:00 committed by Alexandre Julliard
parent 0b3d880c8e
commit 284f86183c
1 changed files with 12 additions and 15 deletions
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27
dlls/advapi32/service.c
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@ -1302,19 +1302,9 @@ CreateServiceW( SC_HANDLE hSCManager, LPCWSTR lpServiceName,
{
HKEY service_key;
/* The service already exists, so bail out */
if(!lstrcmpiW(lpServiceName, buffer))
{
SetLastError(ERROR_SERVICE_EXISTS);
return NULL;
}
/* The given displayname matches the found servicename. We don't bail out
* as servicename is checked before a duplicate displayname
/* Open service first before deciding whether it already exists or not
* It could be that it's not a valid service, but only the registry key itself exists
*/
if(!lstrcmpiW(lpDisplayName, buffer))
displayname_exists = TRUE;
if (RegOpenKeyExW(hscm->hkey, buffer, 0, KEY_READ, &service_key) == ERROR_SUCCESS)
{
WCHAR name[MAX_PATH];
@ -1322,9 +1312,16 @@ CreateServiceW( SC_HANDLE hSCManager, LPCWSTR lpServiceName,
if (RegQueryValueExW(service_key, szDisplayName, NULL, NULL, (LPBYTE)name, &size) == ERROR_SUCCESS)
{
/* The given displayname matches the found displayname */
if (!lstrcmpiW(lpDisplayName, name))
if (lpDisplayName && (!lstrcmpiW(lpDisplayName, name)
|| !lstrcmpiW(lpDisplayName, buffer)))
displayname_exists = TRUE;
if (!lstrcmpiW(lpServiceName, buffer))
{
RegCloseKey(service_key);
SetLastError(ERROR_SERVICE_EXISTS);
return NULL;
}
}
RegCloseKey(service_key);
}
@ -1332,7 +1329,7 @@ CreateServiceW( SC_HANDLE hSCManager, LPCWSTR lpServiceName,
len = sizeof(buffer);
}
if (lpDisplayName && displayname_exists)
if (displayname_exists)
{
SetLastError(ERROR_DUPLICATE_SERVICE_NAME);
return NULL;