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services.exe: Reduce Registry access to KEY_READ or MAXIMUM_ALLOWED wherever possible.

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This commit is contained in:
Paul Chitescu 2009-12-04 17:58:20 +02:00 committed by Alexandre Julliard
parent 7fea0e332f
commit 910b191574
2 changed files with 26 additions and 17 deletions
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39
programs/services/rpc.c
View file

@ -84,6 +84,21 @@ struct sc_lock
struct scmdatabase *db;
};
static void free_config_strings(QUERY_SERVICE_CONFIGW *old_cfg, QUERY_SERVICE_CONFIGW *new_cfg)
{
if (old_cfg->lpBinaryPathName != new_cfg->lpBinaryPathName)
HeapFree(GetProcessHeap(), 0, old_cfg->lpBinaryPathName);
if (old_cfg->lpLoadOrderGroup != new_cfg->lpLoadOrderGroup)
HeapFree(GetProcessHeap(), 0, old_cfg->lpLoadOrderGroup);
if (old_cfg->lpServiceStartName != new_cfg->lpServiceStartName)
HeapFree(GetProcessHeap(), 0, old_cfg->lpServiceStartName);
if (old_cfg->lpDisplayName != new_cfg->lpDisplayName)
HeapFree(GetProcessHeap(), 0, old_cfg->lpDisplayName);
}
/* Check if the given handle is of the required type and allows the requested access. */
static DWORD validate_context_handle(SC_RPC_HANDLE handle, DWORD type, DWORD needed_access, struct sc_handle **out_hdr)
{
@ -546,34 +561,28 @@ DWORD svcctl_ChangeServiceConfigW(
/* configuration OK. The strings needs to be duplicated */
if (lpBinaryPathName != NULL)
{
HeapFree(GetProcessHeap(), 0, service->service_entry->config.lpBinaryPathName);
new_entry.config.lpBinaryPathName = strdupW(lpBinaryPathName);
}
if (lpLoadOrderGroup != NULL)
{
HeapFree(GetProcessHeap(), 0, service->service_entry->config.lpLoadOrderGroup);
new_entry.config.lpLoadOrderGroup = strdupW(lpLoadOrderGroup);
}
if (lpServiceStartName != NULL)
{
HeapFree(GetProcessHeap(), 0, service->service_entry->config.lpServiceStartName);
new_entry.config.lpServiceStartName = strdupW(lpServiceStartName);
}
if (lpDisplayName != NULL)
{
HeapFree(GetProcessHeap(), 0, service->service_entry->config.lpDisplayName);
new_entry.config.lpDisplayName = strdupW(lpDisplayName);
}
*service->service_entry = new_entry;
save_service_config(service->service_entry);
/* try to save to Registry, commit or rollback depending on success */
err = save_service_config(&new_entry);
if (ERROR_SUCCESS == err)
{
free_config_strings(&service->service_entry->config,&new_entry.config);
*service->service_entry = new_entry;
}
else free_config_strings(&new_entry.config,&service->service_entry->config);
service_unlock(service->service_entry);
return ERROR_SUCCESS;
return err;
}
DWORD svcctl_SetServiceStatus(

4
programs/services/services.c
View file

@ -376,7 +376,7 @@ static DWORD scmdatabase_create(struct scmdatabase **db)
InitializeCriticalSection(&(*db)->cs);
err = RegCreateKeyExW(HKEY_LOCAL_MACHINE, SZ_SERVICES_KEY, 0, NULL,
REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL,
REG_OPTION_NON_VOLATILE, MAXIMUM_ALLOWED, NULL,
&(*db)->root_key, NULL);
if (err != ERROR_SUCCESS)
HeapFree(GetProcessHeap(), 0, *db);
@ -417,7 +417,7 @@ static DWORD scmdatabase_load_services(struct scmdatabase *db)
break;
WINE_TRACE("Loading service %s\n", wine_dbgstr_w(szName));
err = RegOpenKeyExW(db->root_key, szName, 0, KEY_READ | KEY_WRITE, &hServiceKey);
err = RegOpenKeyExW(db->root_key, szName, 0, KEY_READ, &hServiceKey);
if (err == ERROR_SUCCESS)
{
err = load_service_config(hServiceKey, entry);