#!/bin/bash

# Update the package lists
sudo apt update

# Install Squid and Apache Utilities (for htpasswd)
sudo apt install -y squid apache2-utils

# Create a username and password for the proxy
read -p "Enter the proxy username: " proxy_user
sudo htpasswd -c /etc/squid/passwd $proxy_user

# Backup the original Squid configuration file
sudo cp /etc/squid/squid.conf /etc/squid/squid.conf.backup

# Add authentication configuration to Squid
cat <<EOL | sudo tee /etc/squid/squid.conf
auth_param basic program /usr/lib/squid/basic_ncsa_auth /etc/squid/passwd
auth_param basic children 5
auth_param basic realm Proxy
auth_param basic credentialsttl 2 hours
acl authenticated proxy_auth REQUIRED
http_access allow authenticated
http_port 3128
EOL

# Restart Squid to apply the changes
sudo systemctl restart squid

echo "HTTP proxy is set up and running on port 3128. Use the username and password you set up to access it."