autolog.sh

#!/bin/bash

# credentials
username="USERNAME"
password="PASSWORD"

# settings
start_url="http://google.com"
login_url_check_sub_str="fgtauth?"

echo "[CIUP-NET] Start CIUP network autologin"


login_url=$(curl -s $start_url | grep -Eo "(http|https)://[a-zA-Z0-9./?=_%:-]*")

if [[ "$login_url" == *"$login_url_check_sub_str"* ]]; then
  magic=$(echo $login_url | grep -oP "(?<=fgtauth\?)[a-fA-F0-9]*")

  echo "[CIUP-NET] Load login portal"
  curl -s $login_url > /dev/null
  
  echo "[CIUP-NET] Start to connect using credentials"
  curl $login_url --data '4Tredir='$start_url'&magic='$magic'&username='$username'&password='$password'' --insecure
  
  echo "[CIUP-NET] Login complete"
fi

echo "[CIUP-NET] End of CIUP network autologin"