Sweden-Number/dlls/iphlpapi/ifenum.h

139 lines
5.5 KiB
C

/* ifenum.h
* Copyright (C) 2003 Juan Lang
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* This module implements functions shared by DLLs that need to enumerate
* network interfaces and addresses. It's meant to hide some problematic
* defines like socket(), as well as provide only one file
* that needs to be ported to implement these functions on different platforms,
* since the Windows API provides multiple ways to get at this info.
*
* Like Windows, it uses a numeric index to identify an interface uniquely.
* As implemented, an interface represents a UNIX network interface, virtual
* or real, and thus can have 0 or 1 IP addresses associated with it. (This
* only supports IPv4.)
* The indexes returned are not guaranteed to be contiguous, so don't call
* getNumInterfaces() and assume the values [0,getNumInterfaces() - 1] will be
* valid indexes; use getInterfaceIndexTable() instead. Non-loopback
* interfaces have lower index values than loopback interfaces, in order to
* make the indexes somewhat reusable as Netbios LANA numbers. See ifenum.c
* for more detail on this.
*
* See also the companion file, ipstats.h, for functions related to getting
* statistics.
*/
#ifndef WINE_IFENUM_H_
#define WINE_IFENUM_H_
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "iprtrmib.h"
#define MAX_INTERFACE_PHYSADDR 8
#define MAX_INTERFACE_DESCRIPTION 256
/* Call before using the functions in this module */
void interfaceMapInit(void);
/* Call to free resources allocated in interfaceMapInit() */
void interfaceMapFree(void);
DWORD getNumInterfaces(void);
DWORD getNumNonLoopbackInterfaces(void);
/* A table of interface indexes, see get*InterfaceTable(). Ignore numAllocated,
* it's used during the creation of the table.
*/
typedef struct _InterfaceIndexTable {
DWORD numIndexes;
DWORD numAllocated;
DWORD indexes[1];
} InterfaceIndexTable;
/* Returns a table with all known interface indexes, or NULL if one could not
* be allocated. free() the returned table.
*/
InterfaceIndexTable *getInterfaceIndexTable(void);
/* Like getInterfaceIndexTable, but filters out loopback interfaces. */
InterfaceIndexTable *getNonLoopbackInterfaceIndexTable(void);
/* ByName/ByIndex versions of various getter functions. */
/* can be used as quick check to see if you've got a valid index, returns NULL
* if not. The buffer's only valid till the next call, so copy it right away
* if you care.
*/
const char *getInterfaceNameByIndex(DWORD index);
/* Fills index with the index of name, if found. Returns
* ERROR_INVALID_PARAMETER if name or index is NULL, ERROR_INVALID_DATA if name
* is not found, and NO_ERROR on success.
*/
DWORD getInterfaceIndexByName(const char *name, PDWORD index);
/* This bunch returns IP addresses, and INADDR_ANY or INADDR_NONE if not found,
* appropriately depending on the f/n.
*/
DWORD getInterfaceIPAddrByName(const char *name);
DWORD getInterfaceIPAddrByIndex(DWORD index);
DWORD getInterfaceMaskByName(const char *name);
DWORD getInterfaceMaskByIndex(DWORD index);
DWORD getInterfaceBCastAddrByName(const char *name);
DWORD getInterfaceBCastAddrByIndex(DWORD index);
/* Gets a few physical charactersistics of a device: MAC addr len, MAC addr,
* and type as one of the MIB_IF_TYPEs.
* len's in-out: on in, needs to say how many bytes are available in addr,
* which to be safe should be MAX_INTERFACE_PHYSADDR. On out, it's how many
* bytes were set, or how many were required if addr isn't big enough.
* Returns ERROR_INVALID_PARAMETER if name, len, addr, or type is NULL.
* Returns ERROR_INVALID_DATA if name/index isn't valid.
* Returns ERROR_INSUFFICIENT_BUFFER if addr isn't large enough for the
* physical address; *len will contain the required size.
* May return other errors, e.g. ERROR_OUTOFMEMORY or ERROR_NO_MORE_FILES,
* if internal errors occur.
* Returns NO_ERROR on success.
*/
DWORD getInterfacePhysicalByName(const char *name, PDWORD len, PBYTE addr,
PDWORD type);
DWORD getInterfacePhysicalByIndex(DWORD index, PDWORD len, PBYTE addr,
PDWORD type);
/* Get the operational status as a (MIB_)IF_OPER_STATUS type.
*/
DWORD getInterfaceStatusByName(const char *name, PDWORD status);
DWORD getInterfaceStatusByIndex(DWORD index, PDWORD status);
DWORD getInterfaceMtuByName(const char *name, PDWORD mtu);
DWORD getInterfaceMtuByIndex(DWORD index, PDWORD mtu);
/* Fills in the MIB_IFROW by name/index. Doesn't fill in interface statistics,
* see ipstats.h for that.
* Returns ERROR_INVALID_PARAMETER if name or entry is NULL, ERROR_INVALID_DATA
* if name/index isn't valid, and NO_ERROR otherwise.
*/
DWORD getInterfaceEntryByName(const char *name, PMIB_IFROW entry);
DWORD getInterfaceEntryByIndex(DWORD index, PMIB_IFROW entry);
/* Converts the network-order bytes in addr to a printable string. Returns
* string.
*/
char *toIPAddressString(unsigned int addr, char string[16]);
#endif /* ndef WINE_IFENUM_H_ */