MAC地址转换LinkLocal地址

    前面介绍过 地址是通过网卡MAC地址转换而来的,这里再提供一个小程序来转换;用C语言写个程序:先获取本机MAC地址,据此得到Link Local地址( )。

#include 
#include 
#include 

void byte2Hex(unsigned char bData,unsigned char hex[])
{
    int high=bData/16,low =bData %16;
    hex[0] = (high <10)?('0'+high):('A'+high-10);
    hex[1] = (low <10)?('0'+low):('A'+low-10);
}

int getLocalMac(unsigned char *mac) //获取本机MAC地址 
{
    ULONG ulSize=0;
    PIP_ADAPTER_INFO pInfo=NULL;
    int temp=0;
    temp = GetAdaptersInfo(pInfo,&ulSize);//第一次调用,获取缓冲区大小
    pInfo=(PIP_ADAPTER_INFO)malloc(ulSize);
    temp = GetAdaptersInfo(pInfo,&ulSize);

    int iCount=0;
    while(pInfo)//遍历每一张网卡
    {
        //  pInfo->Address 是MAC地址
        for(int i=0;i<(int)pInfo->AddressLength;i++)
        {
            byte2Hex(pInfo->Address[i],&mac[iCount]);
            iCount+=2;
            if(i<(int)pInfo->AddressLength-1)
            {
                mac[iCount++] = ':';
            }else
            {
                mac[iCount++] = '#';
            }
        }
        pInfo = pInfo->Next;
    }

    if(iCount >0)
    {
        mac[--iCount]='\0';
        return iCount;
    }
    else return -1;
}

int main(int argc, char* argv[])
{
    unsigned char address[1024];
    if(getLocalMac(address)>0)
    {
        printf("mac-%s\n",address);
    }else
    {
        printf("invoke getMAC error!\n");
    }
    return 0;
}

需要这两个:iphlpapi.lib , ws2_32.lib 静态库(VC添加到工程LINK里)。

Monday, August 05, 2013 | IPv6

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