linux下获取CPUID和MAC地址

   由于软件的特殊性，需要将机器码写到软件中用于鉴权。所以这几天找了一些linux下获取CPUID和MAC地址的代码，均测试通过。下面是代码：

linux获取CPUID

#include <stdio.h>
#include <string.h>

int main(int argc, char* argv[])
{
   unsigned long s1,s2,s3,s4;
 char string[128];
 char szCpuId[1024];
 char p1[128], p2[128];
 unsigned int eax = 0;
        unsigned int ebx,ecx,edx;

 asm volatile
 ( "cpuid"
        : "=a"(eax), "=b"(ebx), "=c"(ecx), "=d"(edx)
        : "0"(0)
 );
 snprintf(szCpuId, 5, "%s", (char *)&ebx);
        snprintf(szCpuId+4, 5, "%s", (char *)&edx);
        snprintf(szCpuId+8, 5, "%s", (char *)&ecx);

 asm volatile
 ( "movl $0x01 , %%eax ; \n\t"
  "xorl %%edx , %%edx ;\n\t"
  "cpuid ;\n\t"
  "movl %%edx ,%0 ;\n\t"
  "movl %%eax ,%1 ; \n\t"
  :"=m"(s1),"=m"(s2)
 );

 sprintf((char *)p1, "-%08X\n%08X-", s1, s2);
 snprintf(szCpuId+12, 20, "%s", (char *)p1);

 asm volatile
 ( "movl $0x03,%%eax ;\n\t"
  "xorl %%ecx,%%ecx ;\n\t"
  "xorl %%edx,%%edx ;\n\t"
  "cpuid ;\n\t"
  "movl %%edx,%0 ;\n\t"
  "movl %%ecx,%1 ;\n\t"
  :"=m"(s3),"=m"(s4)
 );

 sprintf((char *)p2, "%08X-%08X\n", s3, s4);
 snprintf(szCpuId+31, 19, "%s", (char *)p2);

 printf((char*)szCpuId);

 return 0;
}

获取MAC地址：

 

#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <net/if.h>

int get_mac(char* mac)

{
    struct ifreq tmp;
    int sock_mac;
    char mac_addr[30];
    sock_mac = socket(AF_INET, SOCK_STREAM, 0);
    if( sock_mac == -1){
        perror("create socket fail\n");
        return -1;
    }
    memset(&tmp,0,sizeof(tmp));
    strncpy(tmp.ifr_name,"eth0",sizeof(tmp.ifr_name)-1 );
    if( (ioctl( sock_mac, SIOCGIFHWADDR, &tmp)) < 0 ){
        printf("mac ioctl error\n");
        return -1;
    }
    sprintf(mac_addr, "%02x%02x%02x%02x%02x%02x",
            (unsigned char)tmp.ifr_hwaddr.sa_data[0],
            (unsigned char)tmp.ifr_hwaddr.sa_data[1],
            (unsigned char)tmp.ifr_hwaddr.sa_data[2],
            (unsigned char)tmp.ifr_hwaddr.sa_data[3],
            (unsigned char)tmp.ifr_hwaddr.sa_data[4],
            (unsigned char)tmp.ifr_hwaddr.sa_data[5]
            );
    printf("local mac:%s\n", mac_addr);
    close(sock_mac);
    memcpy(mac,mac_addr,strlen(mac_addr));
    return 1;
}

int main()
{
    char buff[512];
    memset(buff, 0, 512);
    get_mac(buff);
    fprintf(stderr, "%s\n", buff);
}

具体原理网上有很多，代码也有很多，我只是找了几个可用的代码备份，以便以后使用