ubutnu下自动检测网络连接并自动登录网关的shell脚本
实验室有台服务器在连接校园网，偶尔会出现问题需要重新登录网关，写了个shell脚本在后台运行，每隔十分钟ping一次百度，如果ping不通的话就自动登录网关
#!/bin/bash
#检测网络连接
#判断输出日志文件是否存在
log=./network.log
if [ ! -f ${log} ]
then
touch ${log}
fi
# 每隔十分钟判断一次
while [ true ]; do
echo "checking inernet connecting..."
# 判断网络是否连接
ping -c 1 www.baidu.com > /dev/null 2>&1
if [ $? -eq 0 ];then
echo `date` good >> ${log}
echo "connecting is good"
else
echo "========================================" >> ${log}
echo `date` bad >> ${log}
echo "connecting is bad"
# 尝试进行网络连接
echo `date` trying to connect internet... >> ${log}
echo "trying to connect internet..."
echo `date` `curl -d "username=20175227015&domain=&password=xxxxxxx&enablemacauth=0" http://a.suda.edu.cn/index.php/index/login` >> ${log}
echo "=======================================" >> ${log}
fi
seconds_left=600
echo "Please wating for ${seconds_left} s..."
while [ $seconds_left -gt 0 ];do
echo -n $seconds_left
sleep 1
seconds_left=$(($seconds_left - 1))
echo -ne "\r \r" #清除本行文字
done
done
更新
学校网关系统升级了，现在只需要在网关认证界面加入MAC免认证即可，但一个用户最多只能有两个MAC免认证，所以此方法仍有价值。
再次更新
#!/bin/bash
if [ $# -lt 1 ]; then
echo "Usage: ./login_suda.sh <ip>"
echo "Example: ./login_suda.sh 10.10.65.124"
exit 1
fi
ip=$1
curl -i "http://10.9.1.3:801/eportal/?c=Portal&a=login&callback=dr1022&login_method=1&user_account=%2C0%2C20175227039&user_password=zj821220&wlan_user_ip=${ip}&wlan_user_ipv6=&wlan_user_mac=000000000000&wlan_ac_ip=&wlan_ac_name=&jsVersion=3.3.3&v=2849"
echo "\n"
2020年更新
2020年暑假学校升级了网关认证系统，上面的两个脚本已经失效。
下面是一个自动登录网关的python脚本，可以辅以windows定时任务，或者linux下的crontab
import requests
import socket
import time
import sys
uname = "1234"
passwd = "5678"
def get_host_ip():
try:
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.connect(('8.8.8.8', 80))
ip = s.getsockname()[0]
finally:
s.close()
return ip
def login_wg(uname, passwd):
ip = get_host_ip()
url = "http://10.9.1.3:801/eportal/?c=Portal&a=login&callback=dr1022&login_method=1&user_account=%2C0%2C" + uname + "&user_password=" + passwd + "&wlan_user_ip=" + ip +"&wlan_user_ipv6=&wlan_user_mac=000000000000&wlan_ac_ip=&wlan_ac_name=&jsVersion=3.3.3&v=2849"
data = requests.get(url).text
print(data)
login_wg(uname, passwd)
time.sleep(60)
sys.exit()
