C/C++远程开机

  1 // 2C:4D:54:ED:08:F0
  2 #include <stdio.h>
  3 #include <Windows.h>
  4 #include <winsock.h>
  5 
  6 #pragma comment(lib,"Ws2_32.lib")
  7 
  8 /*
  9     从文件通过ip获取mac
 10     ip:欲取ip的mac地址
 11     成功返回对应mac,否则返回NULL.
 12 */
 13 unsigned char *GetfileMacforIp(char *ip);
 14 /*
 15     远程唤醒
 16     mac:目标mac地址
 17     ps:在此之前要确保目标主板支持远程唤醒
 18 */
 19 VOID RemoteStart(unsigned char *mac);
 20 
 21 int main(void)
 22 {
 23     unsigned char *mac = GetfileMacforIp("172.18.1.6");
 24     if (mac)
 25     {
 26         printf("%X-%X-%X-%X-%X-%X
", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
 27         //free(mac); 为什么无法free?
 28     }
 29     system("pause");
 30     return 0;
 31 }
 32 
 33 
 34 
 35 VOID RemoteStart(unsigned char *mac)
 36 {
 37     // 存封包数据,格式为：6个0xFF为一组,16个mac地址为一组.mac地址正好是6个字节,封包总大小=6+16*6=102
 38     unsigned char packet[102] = { 0 };
 39     struct sockaddr_in addr;
 40     int sockfd, i, j;
 41     const char on = 1;
 42     WSADATA aaa;
 43 
 44     // 填充封包数据
 45     for (i = 0; i < 6; i++)
 46         packet[i] = 0xFF;
 47     for (i = 1; i < 17; i++)
 48     {
 49         for (j = 0; j < 6; j++)
 50         {
 51             packet[i * 6 + j] = mac[j];
 52         }
 53     }
 54     // 使用socket发送封包前必须初始化socket
 55     WSAStartup(MAKEWORD(2, 2), &aaa);
 56     // udp方式
 57     sockfd = socket(AF_INET, SOCK_DGRAM, 0);
 58     setsockopt(sockfd, SOL_SOCKET, SO_BROADCAST, &on, sizeof(on));
 59     if (sockfd < 0)
 60     {
 61         printf("setsockopt filed!
");
 62         return;
 63     }
 64     memset(&addr, 0, sizeof(addr));
 65     addr.sin_family = AF_INET;
 66     addr.sin_port = htons(10000);
 67     // 广播地址:255.255.255.255
 68     addr.sin_addr.S_un.S_addr = inet_addr("255.255.255.255");
 69     sendto(sockfd, (const char *)packet, sizeof(packet), 0, (struct sockaddr *)&addr, sizeof(addr));
 70     WSACleanup();
 71 }
 72 
 73 unsigned char *GetfileMacforIp(char *ip)
 74 {
 75     char tmp[255] = { 0 };
 76     char *pos = NULL;
 77     char mac[20] = { 0 };
 78     unsigned char *mac1 = (unsigned char*)malloc(sizeof(unsigned char)*6);
 79     //unsigned char mac1[6] = { 0 };
 80 
 81     FILE *wj = NULL;
 82     fopen_s(&wj, "ipmac.txt", "r");
 83     if (!wj)
 84     {
 85         printf("file can`t open!
");
 86         return 0;
 87     }
 88     while (!feof(wj))
 89     {
 90         memset(tmp, 0, 255);
 91         fgets(tmp, 255, wj);
 92         pos = strstr(tmp, ip);
 93         if (pos)
 94         {
 95             // 文本形式Mac地址
 96             memmove(mac, tmp + strlen(ip) + 1, 17);
 97             // 转字节形式Mac地址
 98             sscanf_s(mac, "%x-%x-%x-%x-%x-%x", &mac1[0], &mac1[1], &mac1[2], &mac1[3], &mac1[4], &mac1[5]);
 99             //printf("%X %X %X %X %X %X
",mac1[0],mac1[1],mac1[2],mac1[3],mac1[4],mac1[5]);
100             break;
101         }
102     }
103     fclose(wj);
104     return mac1;
105 }
核心函数是RemoteStart，GetfileMacforIp是我在本地存放的一个ip和mac地址的数据文件。