Wake-Linux大棚

admin 管理员组

文章数量: 1184232

Wake

Wake-on-LAN简称WOL或WoL，我们一般将其称为“网络唤醒”、“远端唤醒”技术。WOL是一种技术，同时也是该技术的规范标准，它的功效在于让已经进入休眠状态或关机状态的电脑，透过局域网（多半为以太网）的另一端对其发令，使其从休眠状态唤醒、恢复成运作状态，或从关机状态转成开机状态。此外，与WOL相关的技术也包括远端下令关机、远端下令重新开机等相关的遥控机制。

Wake-on-LAN功能需要有主板和网卡的支持，在主板BIOS中的网卡设置中必须有“Wake On LAN”设置（开启：On），并且相应网卡也得支持该功能。因为，在关闭计算机以后，其实网卡仍然通电的（unless 你把插排电源也关了），这样你就可以通过发送一段Magic Packet给网卡，让网卡将计算机唤醒。

Magic Packet
Magic Packet是一个广播帧（frame），透过端口7或端口9进行发送，且可以用无连接（Connectionless protocol）的通讯协议（如UDP、IPX）来传递，不过一般而言多是用UDP，原因是Novell公司的Netware网络操作系统的IPX协定已经很少使用。
在Magic Packet内，每次都会先有连续6个"FF"（十六进制，换算成二进制即：11111111）的资料，即：FF FF FF FF FF FF，在连续6个"FF"后则开始带出MAC地址，有时还会带出4字节或6字节的密码，一旦经由网卡侦测、解读、研判（广播）Magic Packet的内容，内容中的MAC地址、密码若与电脑自身的地址、密码吻合，就会启动唤醒、开机的程序。

示例:
假设你的网卡物理地址为00:15:17:53:d4:f9, 这段Magic Packet内容如下:

FFFFFFFFFFFF00151753d4f900151753d4f900151753d4f900151753d4f9
00151753d4f900151753d4f900151753d4f900151753d4f900151753d4f9
00151753d4f900151753d4f900151753d4f900151753d4f900151753d4f9
00151753d4f900151753d4f9

以下是根据wakelan代码修改的工具,添加了绑定网卡的支持(参数 -i devname).

/*** Copyright (C) 1998 by Christopher Chan-Nui** This program is free software; you can redistribute it and/or modify* it under the terms of the GNU General Public License as published by* the Free Software Foundation; either version 2 of the License, or* (at your option) any later version.** This program is distributed in the hope that it will be useful,* but WITHOUT ANY WARRANTY; without even the implied warranty of* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the* GNU General Public License for more details.** You should have received a copy of the GNU General Public License* along with this program; if not, write to the Free Software* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA**/#define HAVE_GETOPT_H #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <string.h> #include <netdb.h> #include <netinet/in.h> #include <sys/socket.h> #ifdef HAVE_GETOPT_H #include <getopt.h> #endif #include <errno.h> #include <net/if.h> //#include <linux/if.h>#ifndef DEFAULTMAC #define DEFAULTMAC "00a0c9852a5f" #endif #ifndef DEFAULTTARGET #define DEFAULTTARGET "255.255.255.255" #endifstatic char *rcsid="@(#) $Id: wakelan.c,v 1.8 1998/08/30 05:04:28 channui Exp $"; static void *use_rcsid = ( void * )( ( char * )&use_rcsid || ( void * )&rcsid ); char *versionid = "1.0";void usage( char *name ) {printf ( "Usage: %s [options] [mac] [broadcast] [port]/n"" -b addr broadcast address/n"" -m mac mac address of host/n"" -p port UDP port to broadcast to/n"" -i dev bind socket to net device/n"" -v[v] version/n", name );exit ( 0 ); }int parse_mac( unsigned char *mac, char *str ) {int i;int count;char c;unsigned char val;int colon_ok = 1;for ( i = 0; i < 6; i++ ) {mac[i] = 0;}for ( i = 0; i < 6; i++ ) {count = 0;val = 0;do {c = toupper( *str++ );if ( c >= '0' && c <= '9' ) {val = ( val * 16 ) + ( c - '0' );} else if ( c >= 'A' && c <= 'F' ) {val = ( val * 16 ) + ( c - 'A' ) + 10;} else if ( c == ':' ) {if ( colon_ok || count-- != 0 )break;} else if ( c == '/0' ) {str--;break;} else {return 0;}colon_ok=1;} while ( ++count < 2 );colon_ok=( count<2 );*mac++ = val;}if ( *str )return 0;return 1; }int main ( int argc, char *argv[] ) {int sock;int optval = 1;int version =0;int i, j, c, rc;char msg[1024];int msglen = 0;struct sockaddr_in bcast;struct hostent *he;struct in_addr inaddr;unsigned char macaddr[6];char *mac = DEFAULTMAC;char *target = DEFAULTTARGET;short bport = htons( 32767 );struct ifreq if_bind;char *devname = NULL;while ( ( c = getopt( argc, argv, "hvp:m:b:i:" ) ) != EOF ) {switch ( c ) {case 'b':target = optarg;break;case 'm':mac = optarg;break;case 'p':bport = htons( atoi( optarg ) );break;case 'v':version++;break;case 'i':devname = optarg;break;case 'h':case '?':usage( argv[0] );}}if ( version ) {printf ( "Version: %s/n", versionid );if ( version > 1 ) {printf ( " RCSID: %s/n", rcsid );}exit ( 0 );}if ( argv[optind] != NULL ) {mac = argv[optind++];}if ( argv[optind] != NULL ) {target = argv[optind++];}if ( argv[optind] != NULL ) {bport = htons( atoi( argv[optind++] ) );}if ( argv[optind] != NULL ) {usage( argv[0] );}if ( !parse_mac( macaddr, mac ) ) {printf ( "Illegal MAC address '%s'/n", mac );exit ( 1 );}if ( !inet_aton( target, &inaddr ) ) {he = gethostbyname( target );inaddr = *( struct in_addr * )he->h_addr_list[0];}for ( i = 0; i < 6; i++ ) {msg[msglen++] = 0xff;}for ( i = 0; i < 16; i++ ) {for ( j = 0; j < sizeof( macaddr ); j++ ) {msg[msglen++] = macaddr[j];}}memset( &bcast, 0, sizeof( bcast ) );bcast.sin_family = AF_INET;bcast.sin_addr.s_addr = inaddr.s_addr;bcast.sin_port = bport;sock = socket( AF_INET, SOCK_DGRAM, 0 );if ( sock < 0 ) {printf ( "Can't allocate socket/n" );exit ( 1 );}rc = setsockopt( sock, SOL_SOCKET, SO_BROADCAST, &optval, sizeof( optval ) );if ( rc < 0 ) {printf ( "Can't socket option SO_BROADCAST: rc = %d, errno=%s(%d)/n",rc, strerror( errno ), errno );exit ( 1 );}if ( NULL != devname ) {memset( &if_bind, 0x0, sizeof( if_bind ) );strncpy( if_bind.ifr_name, devname, IFNAMSIZ );rc = setsockopt( sock, SOL_SOCKET, SO_BINDTODEVICE, &if_bind, sizeof( if_bind ) );if ( rc < 0 ) {printf( "Can't socket option SO_BINDTODEVICE: rc = %d, errno=%s(%d)/n",rc, strerror( errno ), errno );exit( 1 );}}sendto( sock, &msg, msglen, 0, ( struct sockaddr * )&bcast, sizeof( bcast ) );close( sock );return 0; }
参考:

Wake on LAN mini HOWTO /
Wake-on-LAN
wakelan Author: Christopher Chan-Nui .1.tar.gz

本文标签： Wake

版权声明：本文标题：Wake 内容由网友自发贡献，该文观点仅代表作者本人，转载请联系作者并注明出处：http://roclinux.cn/b/1687322878a89465.html，本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌抄袭侵权/违法违规的内容，一经查实，本站将立刻删除。

Linux大棚 – 不忘初心的技术博客，浮躁时代的安静角落

Wake

Wake

更多相关文章

Wake

联想拯救者 Lenovo Legion 通电自启 插电自启 通电开机 插电开机 Wake on AC

Linux系统通过Wake OnFrom LAN实现网络远程唤醒开机

发表评论

推荐文章

H3C路由器教程：路由配置轻松上手

如何远程控制电脑？您只需要这样做_命令提示符远程桌面指令

巧用find命令清除系统垃圾_linux find 清理不干净

计算机找不到msvcp100.dll怎么办？msvcp100.dll丢失怎样修复_msvcp100 64位

程序员教你彻底清理电脑垃圾

热门文章

7月22日：网约车行业的新挑战：司机违规使用‘作弊器’

WWSU轻松搞定，让你从Windows 10升级到Windows 11

华为华三SWF设备登录秘技：电脑连接秘籍，新手也能轻松搞定！

面对U盘System Volume Information删不掉，用CMD帮你找到出路

vcruntime140.dll有什么作用？vcruntime140.dll缺失的解决方法分享_vcruntime140是什么作用

一劳永逸地激活NOD32,从此不需要NOD32激活码_nod32 免激活 精睿

windows 电脑，桌面没有我的电脑图标，如何在桌面展示_win2008如何显示我的电脑

【Arduino】入门篇——烟雾报警器_基于arduino烟雾报警器设计

音乐歌词获取工具：轻松网易云QQ音乐歌词

DIY高手必备：解锁设备的无限网络潜能

最新文章

一文教会你AIX系统备份：mksysb实用指南

SWF文件备份失败？这些步骤让你轻松搞定

Win10系统备份轻松搞定：掌握captureimage命令的关键技巧

Linux系统安全小贴士：掌握备份与恢复，安心每一天

省时省心！三步完成电脑系统高效备份！

Ubuntu系统维护秘籍：备份步骤详解，保护你的劳动成果！

Linux系统不哭：高效备份与快速恢复方案

Ubuntu系统安全大计，备份技巧大公开

GHOST教程：系统备份和还原，小白也能变成高手！

Linux备份与恢复必修课：SWF文件安全策略从入门到精通

Exploring the Finest Accommodations: A Comprehensive Guide to Ruston LA Hotels

The Enchanting Experience of ScaliniTella NYC: A Culinary Gem in the Heart of Manhattan

Exploring the Exquisite Aloft Chicago O'Hare: A Blend of Modern Luxury and Convenience

A Culinary Journey: Discovering the Finest Dining Experiences in Waco, TX

A Culinary Journey: Discovering the Finest Dining Experiences in Athens, GA

电脑设备管理器在哪里？一次让我抓狂又兴奋的寻找经历

与GWX的持久战：一段关于Windows10升级弹窗的私人记忆

以管理员身份运行：那些年我们追过的权限与踩过的坑

联想拯救者 Lenovo Legion 通电自启插电自启通电开机插电开机 Wake on AC

一劳永逸地激活NOD32,从此不需要NOD32激活码_nod32 免激活精睿