The network setup script for Shenzhen University.

login-szu-ipv6.py

#!/usr/bin/env python
#-*- coding:utf-8 -*-

"""The login CLI for Shenzhen University IPv6.
"""

import argparse
import urllib
import getpass
import sys


DEFAULT_GATEWAY = "http://ip6.2166drcom.szu.edu.cn/"
DEFAULT_PASSWORD_PROMPT = "password: "


def login(gateway, username, password):
    form = {'DDDDD': str(username), 'upass': str(password),
            '0MKKey': "%B5%C7%C2%BC+Login", 'v6ip': ""}
    return urllib.urlopen(gateway, data=urllib.urlencode(form))


def parse_args():
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument("-u", "--username", required=True, type=int,
                        help="Shenzhen University Card ID")
    parser.add_argument("-g", "--gateway", type=str, default=DEFAULT_GATEWAY,
                        help="IPv6 login gateway of internal network")
    args = parser.parse_args()

    args.password = None
    while not args.password:
        args.password = getpass.getpass(DEFAULT_PASSWORD_PROMPT)

    return args


def main():
    args = parse_args()
    try:
        login(args.gateway, args.username, args.password)
    except IOError as e:
        print >> sys.stderr, e
        exit(1)


if __name__ == "__main__":
    main()

szu-static-route.bat

route delete 0.0.0.0/0      192.168.154.33
route delete 0.0.0.0/0      10.0.0.1

route add    0.0.0.0/0      192.168.154.33 metric 500 -p
route add    0.0.0.0/0      10.0.0.1       metric 1 -p
route add    10.0.0.0/8     10.0.0.1       metric 1 -p

route add    172.16.0.0/12  192.168.154.33 metric 1 -p
route add    192.168.0.0/16 192.168.154.33 metric 1 -p
route add    210.39.0.0/20  192.168.154.33 metric 500 -p

pause

szu-static-route.sh

#!/usr/bin/env sh

dev=$1

if [ -t $dev ]; then
    echo > /dev/stderr "usage: $0 [device_name]"
    exit 1
fi

gw=`netstat -nr | awk -v dev=$dev '{if ($4 == "UG" && $8 == dev) print $2 }'`

if [ -t $gw ]; then
    echo > /dev/stderr "cannot found gateway of $dev"
    exit 1
fi

# instead of default route
ip route delete 0.0.0.0/0 dev $dev via $gw
ip route add 0.0.0.0/0 dev $dev via $gw metric 1000

# shenzhen university internal accessible
ip route add 172.16.0.0/12 dev $dev via $gw metric 1
ip route add 192.168.0.0/16 dev $dev via $gw metric 1
ip route add 210.39.0.0/20 dev $dev via $gw metric 1

exit 0

usage.md

Installation

$ cd /usr/local/sbin/
$ szu_network=https://gist.github.com/tonyseek/5125314/raw
$ sudo wget $szu_network/setup-szu-network.sh -O setup-szu-network.sh
$ sudo wget $szu_network/login-szu-ipv6.py -O login-szu-ipv6.py
$ sudo chmod +x setup-szu-network.sh
$ sudo chmod +x login-szu-ipv6.py

Usage Example

Environment

1. The Internet has been connected to eth0
2. The internal network has been connected to eth1

Setup

You should ensure eth0 and eth1 up both.

$ ip addr show
$ ipconfig # another way

Then you can use this script.

$ sudo setup-szu-network.sh eth1

Now the Internet and the internal network of Shenzhen University could be accessible both.

IPv6 Login

$ login-szu-ipv6.py -u 123456