c# - 在不使用 WMI 的情况下获取所有网络适配器的 MAC 地址
问题描述
使用 WMI 可以获得所有网络适配器 ( Win32_NetworkAdapter
) 的列表,甚至是禁用的(因为NetworkInterface.GetAllNetworkInterfaces
只返回启用的)。但是,某些系统禁用了 WMI,因此并不总是可用。我一直在查看 winapi 文档,但找不到一个可以返回所有文档的函数。是否存在这样的功能(以及哪一个)?我不想解析netsh。
解决方案
这是来自 MSDN 的打印所有信息的示例。
//
// ConsoleApplication1.cpp : This file contains the 'main' function. Program execution begins and ends there.
//
#include "pch.h"
#include <winsock2.h>
#include <iphlpapi.h>
#include <stdio.h>
#pragma comment(lib, "IPHLPAPI.lib")
#define MALLOC(x) HeapAlloc(GetProcessHeap(), 0, (x))
#define FREE(x) HeapFree(GetProcessHeap(), 0, (x))
/* Note: could also use malloc() and free() */
int __cdecl main(int argc, char **argv)
{
/* Declare and initialize variables */
DWORD dwSize = 0;
DWORD dwRetVal = 0;
unsigned int i = 0;
// Set the flags to pass to GetAdaptersAddresses
ULONG flags = GAA_FLAG_INCLUDE_PREFIX;
// default to unspecified address family (both)
ULONG family = AF_UNSPEC;
LPVOID lpMsgBuf = NULL;
PIP_ADAPTER_ADDRESSES pAddresses = NULL;
ULONG outBufLen = 0;
PIP_ADAPTER_ADDRESSES pCurrAddresses = NULL;
PIP_ADAPTER_UNICAST_ADDRESS pUnicast = NULL;
PIP_ADAPTER_ANYCAST_ADDRESS pAnycast = NULL;
PIP_ADAPTER_MULTICAST_ADDRESS pMulticast = NULL;
IP_ADAPTER_DNS_SERVER_ADDRESS *pDnServer = NULL;
IP_ADAPTER_PREFIX *pPrefix = NULL;
//if (argc != 2) {
// printf(" Usage: getadapteraddresses family\n");
// printf(" getadapteraddresses 4 (for IPv4)\n");
// printf(" getadapteraddresses 6 (for IPv6)\n");
// printf(" getadapteraddresses A (for both IPv4 and IPv6)\n");
// exit(1);
//}
//if (atoi(argv[1]) == 4)
// family = AF_INET;
//else if (atoi(argv[1]) == 6)
// family = AF_INET6;
outBufLen = sizeof(IP_ADAPTER_ADDRESSES);
pAddresses = (IP_ADAPTER_ADDRESSES *)MALLOC(outBufLen);
// Make an initial call to GetAdaptersAddresses to get the
// size needed into the outBufLen variable
if (GetAdaptersAddresses(family, flags, NULL, pAddresses, &outBufLen)
== ERROR_BUFFER_OVERFLOW) {
FREE(pAddresses);
pAddresses = (IP_ADAPTER_ADDRESSES *)MALLOC(outBufLen);
}
if (pAddresses == NULL) {
printf("Memory allocation failed for IP_ADAPTER_ADDRESSES struct\n");
exit(1);
}
// Make a second call to GetAdapters Addresses to get the
// actual data we want
printf("Memory allocated for GetAdapterAddresses = %d bytes\n", outBufLen);
printf("Calling GetAdaptersAddresses function with family = ");
if (family == AF_INET)
printf("AF_INET\n");
if (family == AF_INET6)
printf("AF_INET6\n");
if (family == AF_UNSPEC)
printf("AF_UNSPEC\n\n");
dwRetVal =
GetAdaptersAddresses(family, flags, NULL, pAddresses, &outBufLen);
if (dwRetVal == NO_ERROR) {
// If successful, output some information from the data we received
pCurrAddresses = pAddresses;
while (pCurrAddresses) {
printf("\tLength of the IP_ADAPTER_ADDRESS struct: %ld\n",
pCurrAddresses -> Length);
printf("\tIfIndex (IPv4 interface): %u\n", pCurrAddresses -> IfIndex);
printf("\tAdapter name: %s\n", pCurrAddresses -> AdapterName);
pUnicast = pCurrAddresses -> FirstUnicastAddress;
if (pUnicast != NULL) {
for (i = 0; pUnicast != NULL; i++)
pUnicast = pUnicast -> Next;
printf("\tNumber of Unicast Addresses: %d\n", i);
}
else
printf("\tNo Unicast Addresses\n");
pAnycast = pCurrAddresses -> FirstAnycastAddress;
if (pAnycast) {
for (i = 0; pAnycast != NULL; i++)
pAnycast = pAnycast -> Next;
printf("\tNumber of Anycast Addresses: %d\n", i);
}
else
printf("\tNo Anycast Addresses\n");
pMulticast = pCurrAddresses -> FirstMulticastAddress;
if (pMulticast) {
for (i = 0; pMulticast != NULL; i++)
pMulticast = pMulticast -> Next;
printf("\tNumber of Multicast Addresses: %d\n", i);
}
else
printf("\tNo Multicast Addresses\n");
pDnServer = pCurrAddresses -> FirstDnsServerAddress;
if (pDnServer) {
for (i = 0; pDnServer != NULL; i++)
pDnServer = pDnServer -> Next;
printf("\tNumber of DNS Server Addresses: %d\n", i);
}
else
printf("\tNo DNS Server Addresses\n");
printf("\tDNS Suffix: %wS\n", pCurrAddresses -> DnsSuffix);
printf("\tDescription: %wS\n", pCurrAddresses -> Description);
printf("\tFriendly name: %wS\n", pCurrAddresses -> FriendlyName);
if (pCurrAddresses -> PhysicalAddressLength != 0) {
printf("\tPhysical address: ");
for (i = 0; i < pCurrAddresses -> PhysicalAddressLength;
i++) {
if (i == (pCurrAddresses -> PhysicalAddressLength - 1))
printf("%.2X\n",
(int)pCurrAddresses -> PhysicalAddress[i]);
else
printf("%.2X-",
(int)pCurrAddresses -> PhysicalAddress[i]);
}
}
printf("\tFlags: %ld\n", pCurrAddresses -> Flags);
printf("\tMtu: %lu\n", pCurrAddresses -> Mtu);
printf("\tIfType: %ld\n", pCurrAddresses -> IfType);
printf("\tOperStatus: %ld\n", pCurrAddresses -> OperStatus);
printf("\tIpv6IfIndex (IPv6 interface): %u\n",
pCurrAddresses -> Ipv6IfIndex);
printf("\tZoneIndices (hex): ");
for (i = 0; i < 16; i++)
printf("%lx ", pCurrAddresses -> ZoneIndices[i]);
printf("\n");
pPrefix = pCurrAddresses -> FirstPrefix;
if (pPrefix) {
for (i = 0; pPrefix != NULL; i++)
pPrefix = pPrefix -> Next;
printf("\tNumber of IP Adapter Prefix entries: %d\n", i);
}
else
printf("\tNo IP Adapter Prefix entries\n");
printf("\n");
pCurrAddresses = pCurrAddresses -> Next;
}
}
else {
printf("Call to GetAdaptersAddresses failed with error: %d\n",
dwRetVal);
if (dwRetVal == ERROR_NO_DATA)
printf("\tNo addresses were found for the requested parameters\n");
else {
if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, dwRetVal, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(LPTSTR) &lpMsgBuf, 0, NULL)) {
printf("\tError: %s", (LPSTR)lpMsgBuf);
LocalFree(lpMsgBuf);
FREE(pAddresses);
exit(1);
}
}
}
FREE(pAddresses);
return 0;
}
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