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/*
* tapctl -- Utility to manipulate TUN/TAP adapters on Windows
* https://community.openvpn.net/openvpn/wiki/Tapctl
*
* Copyright (C) 2018-2020 Simon Rozman <simon@rozman.si>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef TAP_H
#define TAP_H
#include <windows.h>
#include "basic.h"
/**
* Creates a TUN/TAP adapter.
*
* @param hwndParent A handle to the top-level window to use for any user adapter that is
* related to non-device-specific actions (such as a select-device dialog
* box that uses the global class driver list). This handle is optional
* and can be NULL. If a specific top-level window is not required, set
* hwndParent to NULL.
*
* @param szDeviceDescription A pointer to a NULL-terminated string that supplies the text
* description of the device. This pointer is optional and can be NULL.
*
* @param szHwId A pointer to a NULL-terminated string that supplies the hardware id
* of the device (e.g. "root\\tap0901", "Wintun").
*
* @param pbRebootRequired A pointer to a BOOL flag. If the device requires a system restart,
* this flag is set to TRUE. Otherwise, the flag is left unmodified. This
* allows the flag to be globally initialized to FALSE and reused for multiple
* adapter manipulations.
*
* @param pguidAdapter A pointer to GUID that receives network adapter ID.
*
* @return ERROR_SUCCESS on success; Win32 error code otherwise
**/
DWORD
tap_create_adapter(
_In_opt_ HWND hwndParent,
_In_opt_ LPCTSTR szDeviceDescription,
_In_ LPCTSTR szHwId,
_Inout_ LPBOOL pbRebootRequired,
_Out_ LPGUID pguidAdapter);
/**
* Deletes an adapter.
*
* @param hwndParent A handle to the top-level window to use for any user adapter that is
* related to non-device-specific actions (such as a select-device dialog
* box that uses the global class driver list). This handle is optional
* and can be NULL. If a specific top-level window is not required, set
* hwndParent to NULL.
*
* @param pguidAdapter A pointer to GUID that contains network adapter ID.
*
* @param pbRebootRequired A pointer to a BOOL flag. If the device requires a system restart,
* this flag is set to TRUE. Otherwise, the flag is left unmodified. This
* allows the flag to be globally initialized to FALSE and reused for multiple
* adapter manipulations.
*
* @return ERROR_SUCCESS on success; Win32 error code otherwise
**/
DWORD
tap_delete_adapter(
_In_opt_ HWND hwndParent,
_In_ LPCGUID pguidAdapter,
_Inout_ LPBOOL pbRebootRequired);
/**
* Enables or disables an adapter.
*
* @param hwndParent A handle to the top-level window to use for any user adapter that is
* related to non-device-specific actions (such as a select-device dialog
* box that uses the global class driver list). This handle is optional
* and can be NULL. If a specific top-level window is not required, set
* hwndParent to NULL.
*
* @param pguidAdapter A pointer to GUID that contains network adapter ID.
*
* @param bEnable TRUE to enable; FALSE to disable
*
* @param pbRebootRequired A pointer to a BOOL flag. If the device requires a system restart,
* this flag is set to TRUE. Otherwise, the flag is left unmodified. This
* allows the flag to be globally initialized to FALSE and reused for multiple
* adapter manipulations.
*
* @return ERROR_SUCCESS on success; Win32 error code otherwise
**/
DWORD
tap_enable_adapter(
_In_opt_ HWND hwndParent,
_In_ LPCGUID pguidAdapter,
_In_ BOOL bEnable,
_Inout_ LPBOOL pbRebootRequired);
/**
* Sets adapter name.
*
* @param pguidAdapter A pointer to GUID that contains network adapter ID.
*
* @param szName New adapter name - must be unique
*
* @param bSilent If true, MSI installer won't display message box and
* only print error to log.
*
* @return ERROR_SUCCESS on success; Win32 error code otherwise
**/
DWORD
tap_set_adapter_name(
_In_ LPCGUID pguidAdapter,
_In_ LPCTSTR szName,
_In_ BOOL bSilent);
/**
* Network adapter list node
*/
struct tap_adapter_node
{
GUID guid; /** Adapter GUID */
LPTSTR szzHardwareIDs; /** Device hardware ID(s) */
LPTSTR szName; /** Adapter name */
struct tap_adapter_node *pNext; /** Pointer to next adapter */
};
/**
* Creates a list of existing network adapters.
*
* @param hwndParent A handle to the top-level window to use for any user adapter that is
* related to non-device-specific actions (such as a select-device dialog
* box that uses the global class driver list). This handle is optional
* and can be NULL. If a specific top-level window is not required, set
* hwndParent to NULL.
*
* @param szzHwIDs A string of strings that supplies the list of hardware IDs of the device.
* This pointer is optional and can be NULL. When NULL, all network adapters
* found are added to the list.
*
* @param ppAdapterList A pointer to the list to receive pointer to the first adapter in
* the list. After the list is no longer required, free it using
* tap_free_adapter_list().
*
* @return ERROR_SUCCESS on success; Win32 error code otherwise
*/
DWORD
tap_list_adapters(
_In_opt_ HWND hwndParent,
_In_opt_ LPCTSTR szzHwIDs,
_Out_ struct tap_adapter_node **ppAdapterList);
/**
* Frees a list of network adapters.
*
* @param pAdapterList A pointer to the first adapter in the list to free.
*/
void
tap_free_adapter_list(
_In_ struct tap_adapter_node *pAdapterList);
#endif /* ifndef TAP_H */
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