Login NCTU dorm network from the command line

nctu-login.sh

#!/bin/bash

# Login NCTU
UA="User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:71.0) Gecko/20100101 Firefox/71.0"

BASE_URL="https://dorm.nctu.edu.tw"
PATH="/cgi-bin/ace_web_auth.cgi?web_jumpto=&orig_referer=www.google.com"

read -p "Student ID : " username
read -p "NCTU Portal Password : " password

FORMDATA="username=${username}&userpwd=${password}"

/usr/bin/curl -H "${UA}" -d "${FORMDATA}" -X POST -vv -L -o index.html "${BASE_URL}${PATH}"

# Complete login
PATH2="/login_online_detail.php?show_portal=1&orig_referer=www.google.com&login_page="

/usr/bin/curl -L -o index.html -vv "${BASE_URL}${PATH2}"