//#define FREE(x) HeapFree(GetProcessHeap(), 0, (x))
int GetIpAddrTableFunction()
{
PMIB_IPADDRTABLE pIPAddrTable; // 网络接口与IP地址映射表
DWORD dwSize = 0; // 获取数据的大小
DWORD dwRetVal = 0; // 调用GetIPAddrTable()函数的返回值
IN_ADDR IPAddr; // 保存IP地址的结构体
LPVOID lpMsgBuf; // 用于获取错误信息
// 分配内存空间
pIPAddrTable = (MIB_IPADDRTABLE *) MALLOC(sizeof (MIB_IPADDRTABLE));
// 第1次调用GetIpAddrTable()函数，获取数据的大小到dwSize
if (pIPAddrTable) {
if (GetIpAddrTable(pIPAddrTable, &dwSize, 0) == ERROR_INSUFFICIENT_BUFFER) {
FREE(pIPAddrTable);
pIPAddrTable = (MIB_IPADDRTABLE *) MALLOC(dwSize);
}
if (pIPAddrTable == NULL) {
printf("GetIpAddrTable()函数内存分配失败\n");
exit(1);
}
}
// 第2次调用GetIpAddrTable()函数，获取实际数据
if ( (dwRetVal = GetIpAddrTable( pIPAddrTable, &dwSize, 0 )) != NO_ERROR ) {
printf("GetIpAddrTable()调用失败: %d\n", dwRetVal);
if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL,
dwRetVal, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),(LPTSTR) & lpMsgBuf, 0, NULL)) {
printf("\t错误信息: %s", lpMsgBuf);
LocalFree(lpMsgBuf);
}
}
printf("\t记录数量: %ld\n", pIPAddrTable->dwNumEntries);
for (int i=0; i < (int) pIPAddrTable->dwNumEntries; i++) {
printf("\n\t接口序号[%d]:\t%ld\n", i, pIPAddrTable->table[i].dwIndex);
IPAddr.S_un.S_addr = (u_long) pIPAddrTable->table[i].dwAddr;
printf("\tIP地址[%d]: \t%s\n", i, inet_ntoa(IPAddr) );
IPAddr.S_un.S_addr = (u_long) pIPAddrTable->table[i].dwMask;
printf("\t子网掩码[%d]: \t%s\n", i, inet_ntoa(IPAddr) );
IPAddr.S_un.S_addr = (u_long) pIPAddrTable->table[i].dwBCastAddr;
printf("\t广播地址[%d]: \t%s (%ld%)\n", i, inet_ntoa(IPAddr), pIPAddrTable->table[i].dwBCastAddr);
printf("\t重组报文最大数量[%d]:\t%ld\n", i, pIPAddrTable->table[i].dwReasmSize);
printf("\t类型和状态[%d]:", i);
if (pIPAddrTable->table[i].wType & MIB_IPADDR_PRIMARY) printf("\t主IP地址");
if (pIPAddrTable->table[i].wType & MIB_IPADDR_DYNAMIC) printf("\t动态IP地址");
if (pIPAddrTable->table[i].wType & MIB_IPADDR_DISCONNECTED) printf("\t断开连接的接口对应的IP地址");
if (pIPAddrTable->table[i].wType & MIB_IPADDR_DELETED) printf("\t删除的IP地址");
if (pIPAddrTable->table[i].wType & MIB_IPADDR_TRANSIENT) printf("\t临时地址");
printf("\n");
}
if (pIPAddrTable) {
FREE(pIPAddrTable);
pIPAddrTable = NULL;
}
printf("\n");
system("pause");
return 0;
}