Clean the system from any crowdsec precence.

crowdsec_clean.sh

#!/bin/bash

# Color definitions
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[0;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color

# Function to print colored output
print_color() {
    printf "${1}%s${NC}\n" "${2}"
}

# Function to check if a command exists
command_exists() {
    command -v "$1" >/dev/null 2>&1
}

# Function to check if running as root
check_root() {
    if [ "$(id -u)" -ne 0 ]; then
        print_color "$RED" "Please run as root"
        exit 1
    fi
}

# Function to check for CrowdSec services
check_services() {
    print_color "$BLUE" "Checking for CrowdSec services..."
    services=$(systemctl list-units --type=service | grep -i crowdsec | awk '{print $1}')
    if [ -z "$services" ]; then
        print_color "$GREEN" "No CrowdSec services found."
    else
        print_color "$YELLOW" "Found CrowdSec services:"
        echo "$services"
    fi
}

# Function to check for CrowdSec packages
check_packages() {
    print_color "$BLUE" "Checking for CrowdSec packages..."
    if command_exists dpkg; then
        packages=$(dpkg -l | grep -i crowdsec | awk '{print $2}')
    elif command_exists rpm; then
        packages=$(rpm -qa | grep -i crowdsec)
    else
        print_color "$RED" "Unable to determine package manager."
        return
    fi

    if [ -z "$packages" ]; then
        print_color "$GREEN" "No CrowdSec packages found."
    else
        print_color "$YELLOW" "Found CrowdSec packages:"
        echo "$packages"
    fi
}

# Function to disable services
disable_services() {
    print_color "$BLUE" "Disabling CrowdSec services..."
    if [ -z "$services" ]; then
        print_color "$YELLOW" "No CrowdSec services to disable."
    else
        echo "$services" | while read -r service; do
            systemctl stop "$service" 2>/dev/null
            systemctl disable "$service" 2>/dev/null
            print_color "$GREEN" "Disabled $service"
        done
    fi
}

# Function to remove packages
remove_packages() {
    print_color "$BLUE" "Removing CrowdSec packages..."
    if [ -z "$packages" ]; then
        print_color "$YELLOW" "No CrowdSec packages to remove."
    else
        if command_exists apt; then
            apt remove --purge -y $packages
            apt autoremove -y
        elif command_exists yum; then
            yum remove -y $packages
        else
            print_color "$RED" "Unable to determine package manager."
            return
        fi
        print_color "$GREEN" "Removed CrowdSec packages."
    fi
}

# Function to remove APT repository entries
remove_apt_repos() {
    print_color "$BLUE" "Removing CrowdSec entries from APT repositories..."
    if command_exists apt; then
        grep -irl "crowdsec" /etc/apt/sources.list /etc/apt/sources.list.d/ | while read -r repo_file; do
            sed -i '/crowdsec/d' "$repo_file"
            print_color "$GREEN" "Removed CrowdSec entry from $repo_file"
        done
        apt update
        print_color "$GREEN" "APT repositories updated."
    else
        print_color "$RED" "APT not found on this system."
    fi
}

# Function to remove configuration files
remove_config() {
    print_color "$BLUE" "Removing CrowdSec configuration files..."
    rm -rf /etc/crowdsec 2>/dev/null
    rm -rf /var/lib/crowdsec 2>/dev/null
    print_color "$GREEN" "Removed CrowdSec configuration files."
}

# Main function
main() {
    check_root

    if [ "$1" = "-n" ]; then
        print_color "$RED" "Nuking all CrowdSec components..."
        check_services
        check_packages
        disable_services
        remove_packages
        remove_apt_repos
        remove_config
        print_color "$GREEN" "CrowdSec has been completely removed from your system."
        exit 0
    fi

    check_services
    check_packages

    if [ -z "$services" ] && [ -z "$packages" ]; then
        print_color "$GREEN" "No CrowdSec components found on your system."
        exit 0
    fi

    print_color "$YELLOW" "What would you like to do?"
    print_color "$BLUE" "1) Disable CrowdSec services"
    print_color "$BLUE" "2) Remove CrowdSec packages"
    print_color "$BLUE" "3) Remove everything (services, packages, configuration, and APT repos)"
    print_color "$BLUE" "4) Keep everything and exit"
    read -r -p "Enter your choice (1-4): " choice

    case $choice in
        1) disable_services ;;
        2) remove_packages ;;
        3)
            disable_services
            remove_packages
            remove_apt_repos
            remove_config
            ;;
        4) print_color "$GREEN" "Exiting without changes." ; exit 0 ;;
        *) print_color "$RED" "Invalid choice. Exiting." ; exit 1 ;;
    esac

    print_color "$GREEN" "Operation completed successfully."
}

main "$@"