install.fairie/home/private_dot_ssh/fail2ban/run_onchange_after_fail2ban.tmpl

{{- if eq .host.distro.family "linux" -}}
#!/usr/bin/env bash

# jail.local hash: {{ include (joinPath .host.home ".ssh" "fail2ban" "jail.local") | sha256sum }}

{{ includeTemplate "universal/profile" }}
{{ includeTemplate "universal/logg" }}

### Restart fail2ban
function restartFail2Ban() {
    if [ -d /Applications ] && [ -d /System ]; then
        # macOS
        logg info 'Enabling the `fail2ban` Homebrew service'
        brew services start fail2ban
    else
        # Linux
        logg info 'Enabling the `fail2ban` service'
        sudo systemctl enable fail2ban
        logg info 'Restarting the `fail2ban` service'
        sudo systemctl restart fail2ban
    fi
}

### Update the jail.local file if environment is not WSL
if [[ ! "$(grep Microsoft /proc/version)" ]]; then
    if [ -d /etc/fail2ban ]; then
        logg info 'Copying ~/.ssh/fail2ban/jail.local to /etc/fail2ban/jail.local'
        sudo cp -f "$HOME/.ssh/fail2ban/jail.local" /etc/fail2ban/jail.local
        restartFail2Ban
    elif [ -d /usr/local/etc/fail2ban ]; then
        logg info 'Copying ~/.ssh/fail2ban/jail.local to /usr/local/etc/fail2ban/jail.local'
        sudo cp -f "$HOME/.ssh/fail2ban/jail.local" /usr/local/etc/fail2ban/jail.local
        restartFail2Ban
    else
        logg warn 'Both the /etc/fail2ban (Linux) and the /usr/local/etc/fail2ban (macOS) folder do not exist'
    fi
else
    logg info 'Skipping sshd_config application since environment is WSL'
fi

{{ end -}}