iust-wifi-login.bash

#!/bin/bash

USERNAME=your_username
PASSWORD=your_password
PLATFORM=linux  # 'linux' | 'android'

# Android: install termux, termux-widgets + termux-api, + pkg install termux-api curl
# Linux: install curl, libnotify-bin


notify () {
  if [ "${PLATFORM}" = "linux" ]; then
    notify-send --hint int:transient:1 "$1" --expire-time=2000
  elif [ "${PLATFORM}" = "android" ]; then
    termux-toast "$1"
  else
    echo "$1"
  fi
}

if ping -c1 -W1 8.8.8.8; then
  curl http://linout.iust.ac.ir/logout > /dev/null 2>&1
  notify "Logged out."
else
  F1=$(curl -X POST -d "username=${USERNAME}" -d "password=${PASSWORD}" https://its.iust.ac.ir/hotspot/login.php)
  HASH=$(echo $F1 | grep -oP "[0-9a-f]{32}")
  curl -X POST -d "username=${USERNAME}" -d "password=${HASH}" http://linout.iust.ac.ir/login > /dev/null 2>&1
  notify "Logged in."
fi