dlls/iphlpapi/ifenum.h

   1 /* ifenum.h
   2  * Copyright (C) 2003,2006 Juan Lang
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  *
  18  * This module implements network interface and address enumeration.  It's
  19  * meant to hide some problematic defines like socket(), and make iphlpapi
  20  * more portable.
  21  *
  22  * Like Windows, it uses a numeric index to identify an interface uniquely.
  23  * As implemented, an interface represents a UNIX network interface, virtual
  24  * or real, and thus can have 0 or 1 IP addresses associated with it.  (This
  25  * only supports IPv4.)
  26  * The indexes returned are not guaranteed to be contiguous, so don't call
  27  * getNumInterfaces() and assume the values [0,getNumInterfaces() - 1] will be
  28  * valid indexes; use getInterfaceIndexTable() instead.
  29  *
  30  * See also the companion file, ipstats.h, for functions related to getting
  31  * statistics.
  32  */
  33 #ifndef WINE_IFENUM_H_
  34 #define WINE_IFENUM_H_
  35
  36 #include <stdarg.h>
  37
  38 #include "windef.h"
  39 #include "winbase.h"
  40 #include "iprtrmib.h"
  41
  42 #define MAX_INTERFACE_PHYSADDR    8
  43 #define MAX_INTERFACE_DESCRIPTION 256
  44
  45 DWORD getNumInterfaces(void);
  46 DWORD getNumNonLoopbackInterfaces(void);
  47
  48 /* A table of interface indexes, see get*InterfaceTable(). */
  49 typedef struct _InterfaceIndexTable {
  50   DWORD numIndexes;
  51   DWORD indexes[1];
  52 } InterfaceIndexTable;
  53
  54 /* Returns a table with all known interface indexes, or NULL if one could not
  55  * be allocated.  HeapFree() the returned table.
  56  */
  57 InterfaceIndexTable *getInterfaceIndexTable(void);
  58
  59 /* Like getInterfaceIndexTable, but filters out loopback interfaces. */
  60 InterfaceIndexTable *getNonLoopbackInterfaceIndexTable(void);
  61
  62 /* ByName/ByIndex versions of various getter functions. */
  63
  64 /* can be used as quick check to see if you've got a valid index, returns NULL
  65  * if not.  Overwrites your buffer, which should be at least of size
  66  * MAX_ADAPTER_NAME.
  67  */
  68 char *getInterfaceNameByIndex(DWORD index, char *name);
  69
  70 /* Fills index with the index of name, if found.  Returns
  71  * ERROR_INVALID_PARAMETER if name or index is NULL, ERROR_INVALID_DATA if name
  72  * is not found, and NO_ERROR on success.
  73  */
  74 DWORD getInterfaceIndexByName(const char *name, PDWORD index);
  75
  76 /* Gets a few physical characteristics of a device:  MAC addr len, MAC addr,
  77  * and type as one of the MIB_IF_TYPEs.
  78  * len's in-out: on in, needs to say how many bytes are available in addr,
  79  * which to be safe should be MAX_INTERFACE_PHYSADDR.  On out, it's how many
  80  * bytes were set, or how many were required if addr isn't big enough.
  81  * Returns ERROR_INVALID_PARAMETER if name, len, addr, or type is NULL.
  82  * Returns ERROR_INVALID_DATA if name/index isn't valid.
  83  * Returns ERROR_INSUFFICIENT_BUFFER if addr isn't large enough for the
  84  * physical address; *len will contain the required size.
  85  * May return other errors, e.g. ERROR_OUTOFMEMORY or ERROR_NO_MORE_FILES,
  86  * if internal errors occur.
  87  * Returns NO_ERROR on success.
  88  */
  89 DWORD getInterfacePhysicalByName(const char *name, PDWORD len, PBYTE addr,
  90  PDWORD type);
  91 DWORD getInterfacePhysicalByIndex(DWORD index, PDWORD len, PBYTE addr,
  92  PDWORD type);
  93
  94 /* Fills in the MIB_IFROW by name.  Doesn't fill in interface statistics,
  95  * see ipstats.h for that.
  96  * Returns ERROR_INVALID_PARAMETER if name is NULL, ERROR_INVALID_DATA
  97  * if name isn't valid, and NO_ERROR otherwise.
  98  */
  99 DWORD getInterfaceEntryByName(const char *name, PMIB_IFROW entry);
 100
 101 DWORD getNumIPAddresses(void);
 102
 103 /* Gets the configured IP addresses for the system, and sets *ppIpAddrTable to
 104  * a table of them allocated from heap, or NULL if out of memory.  Returns
 105  * NO_ERROR on success, something else on failure.  Note there may be more than
 106  * one IP address may exist per interface.
 107  */
 108 DWORD getIPAddrTable(PMIB_IPADDRTABLE *ppIpAddrTable, HANDLE heap, DWORD flags);
 109
 110 /* Converts the network-order bytes in addr to a printable string.  Returns
 111  * string.
 112  */
 113 char *toIPAddressString(unsigned int addr, char string[16]);
 114
 115 #endif /* ndef WINE_IFENUM_H_ */