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April 14, 2025 08:24
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free dns changer تغییر dns در ubuntu
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| #!/bin/bash | |
| ##################################################### | |
| # # | |
| # DNS CHANGER FOR UBUNTU # | |
| # # | |
| # A tool to easily switch between # | |
| # different DNS server providers # | |
| # # | |
| ##################################################### | |
| # Color codes for terminal output | |
| RED='\033[0;31m' | |
| GREEN='\033[0;32m' | |
| YELLOW='\033[0;33m' | |
| BLUE='\033[0;34m' | |
| PURPLE='\033[0;35m' | |
| CYAN='\033[0;36m' | |
| WHITE='\033[1;37m' | |
| BOLD='\033[1m' | |
| NC='\033[0m' # No Color | |
| # DNS server presets | |
| declare -A dns_providers=( | |
| ["Shecan"]="178.22.122.100 185.51.200.2" | |
| ["Electro"]="78.157.42.100 78.157.42.101" | |
| ["Radar"]="10.202.10.10 10.202.10.11" | |
| ["Google"]="8.8.8.8 8.8.4.4" | |
| ["Cloudflare"]="1.1.1.1 1.0.0.1" | |
| ["Quad9"]="9.9.9.9 149.112.112.112" | |
| ["OpenDNS"]="208.67.222.222 208.67.220.220" | |
| ) | |
| # Configuration directory | |
| CONFIG_DIR="/etc/dns-changer" | |
| HISTORY_FILE="$CONFIG_DIR/history.log" | |
| # Check if script is run with sudo | |
| check_sudo() { | |
| if [ "$EUID" -ne 0 ]; then | |
| echo -e "${RED}${BOLD}Error:${NC} Please run this script with sudo privileges" | |
| echo -e "Usage: ${YELLOW}sudo $0${NC}" | |
| exit 1 | |
| fi | |
| } | |
| # Create config directory if it doesn't exist | |
| setup_config() { | |
| if [ ! -d "$CONFIG_DIR" ]; then | |
| mkdir -p "$CONFIG_DIR" | |
| fi | |
| touch "$HISTORY_FILE" | |
| } | |
| # Function to log actions | |
| log_action() { | |
| local action="$1" | |
| local timestamp=$(date "+%Y-%m-%d %H:%M:%S") | |
| echo "[$timestamp] $action" >> "$HISTORY_FILE" | |
| } | |
| # Function to set DNS servers | |
| set_dns() { | |
| local provider_name="$1" | |
| local dns_servers="${dns_providers[$provider_name]}" | |
| local primary_dns=$(echo $dns_servers | cut -d' ' -f1) | |
| local secondary_dns=$(echo $dns_servers | cut -d' ' -f2) | |
| echo -e "\n${BLUE}${BOLD}Setting up $provider_name DNS servers...${NC}" | |
| echo -e "Primary: ${CYAN}$primary_dns${NC}" | |
| echo -e "Secondary: ${CYAN}$secondary_dns${NC}\n" | |
| # Backup the current resolv.conf if backup doesn't exist | |
| if [ ! -f /etc/resolv.conf.bak ]; then | |
| cp /etc/resolv.conf /etc/resolv.conf.bak | |
| echo -e "${GREEN}✓ Created backup of original DNS configuration${NC}" | |
| fi | |
| # For systems using NetworkManager | |
| if command -v nmcli &> /dev/null; then | |
| connection=$(nmcli -t -f NAME c show --active | head -n 1) | |
| if [ -n "$connection" ]; then | |
| echo -e "${YELLOW}➜ Configuring NetworkManager connection: $connection${NC}" | |
| nmcli con mod "$connection" ipv4.dns "$primary_dns $secondary_dns" | |
| nmcli con down "$connection" && nmcli con up "$connection" | |
| echo -e "${GREEN}✓ DNS changed using NetworkManager${NC}" | |
| log_action "Set $provider_name DNS via NetworkManager" | |
| return 0 | |
| fi | |
| fi | |
| # For systems with systemd-resolved | |
| if systemctl is-active systemd-resolved &> /dev/null; then | |
| echo -e "${YELLOW}➜ Configuring systemd-resolved${NC}" | |
| # Create/update resolv.conf with new DNS | |
| echo "nameserver $primary_dns" > /etc/resolv.conf | |
| echo "nameserver $secondary_dns" >> /etc/resolv.conf | |
| # Also update systemd-resolved config | |
| mkdir -p /etc/systemd/resolved.conf.d | |
| cat > /etc/systemd/resolved.conf.d/dns_servers.conf << EOF | |
| [Resolve] | |
| DNS=$primary_dns $secondary_dns | |
| EOF | |
| systemctl restart systemd-resolved | |
| echo -e "${GREEN}✓ DNS changed using systemd-resolved${NC}" | |
| log_action "Set $provider_name DNS via systemd-resolved" | |
| return 0 | |
| fi | |
| # Fallback for other systems | |
| echo -e "${YELLOW}➜ Using direct configuration method${NC}" | |
| echo "nameserver $primary_dns" > /etc/resolv.conf | |
| echo "nameserver $secondary_dns" >> /etc/resolv.conf | |
| echo -e "${GREEN}✓ DNS changed using direct method${NC}" | |
| log_action "Set $provider_name DNS via direct method" | |
| } | |
| # Function to display menu using whiptail if available, otherwise fallback to text menu | |
| show_menu() { | |
| if command -v whiptail &> /dev/null; then | |
| local options=() | |
| local i=1 | |
| for provider in "${!dns_providers[@]}"; do | |
| options+=("$i" "$provider DNS") | |
| ((i++)) | |
| done | |
| options+=("$i" "Reset to default DNS") | |
| options+=("$((i+1))" "Show current DNS") | |
| options+=("$((i+2))" "View change history") | |
| options+=("$((i+3))" "Exit") | |
| local choice=$(whiptail --title "DNS Changer for Ubuntu" --menu "Choose a DNS provider:" 18 60 10 "${options[@]}" 3>&1 1>&2 2>&3) | |
| if [ -z "$choice" ]; then | |
| return 1 | |
| fi | |
| echo "$choice" | |
| return 0 | |
| else | |
| # Fallback text menu | |
| clear | |
| echo -e "${BLUE}${BOLD}╔════════════════════════════════════════╗${NC}" | |
| echo -e "${BLUE}${BOLD}║ DNS CHANGER FOR UBUNTU ║${NC}" | |
| echo -e "${BLUE}${BOLD}╚════════════════════════════════════════╝${NC}" | |
| echo | |
| local i=1 | |
| for provider in "${!dns_providers[@]}"; do | |
| echo -e " ${WHITE}$i.${NC} ${CYAN}$provider DNS${NC}" | |
| ((i++)) | |
| done | |
| echo -e " ${WHITE}$i.${NC} ${YELLOW}Reset to default DNS${NC}" | |
| local reset_option=$i | |
| ((i++)) | |
| echo -e " ${WHITE}$i.${NC} ${PURPLE}Show current DNS${NC}" | |
| local show_option=$i | |
| ((i++)) | |
| echo -e " ${WHITE}$i.${NC} ${BLUE}View change history${NC}" | |
| local history_option=$i | |
| ((i++)) | |
| echo -e " ${WHITE}$i.${NC} ${RED}Exit${NC}" | |
| local exit_option=$i | |
| echo | |
| echo -e "${BLUE}${BOLD}═════════════════════════════════════════${NC}" | |
| echo -n -e "${WHITE}Please select an option [1-$i]:${NC} " | |
| read choice | |
| # Validate input is a number | |
| if ! [[ "$choice" =~ ^[0-9]+$ ]]; then | |
| echo -e "${RED}Invalid input. Please enter a number.${NC}" | |
| sleep 2 | |
| return 1 | |
| fi | |
| if [ "$choice" -ge 1 ] && [ "$choice" -le "$exit_option" ]; then | |
| echo "$choice" | |
| return 0 | |
| else | |
| echo -e "${RED}Invalid option. Please try again.${NC}" | |
| sleep 2 | |
| return 1 | |
| fi | |
| fi | |
| } | |
| # Function to check current DNS | |
| check_current_dns() { | |
| echo -e "\n${PURPLE}${BOLD}Current DNS Configuration:${NC}" | |
| echo -e "${PURPLE}═════════════════════════════════${NC}" | |
| if command -v resolvectl &> /dev/null; then | |
| resolvectl status | grep -E "DNS Server|DNS Domain" | sed "s/^/ /" | |
| else | |
| grep "nameserver" /etc/resolv.conf | sed "s/nameserver/ DNS Server: /" | |
| fi | |
| # Try to get the active connection name if NetworkManager is used | |
| if command -v nmcli &> /dev/null; then | |
| echo -e "\n${CYAN}Active Network Connection:${NC}" | |
| nmcli -t -f NAME,TYPE,DEVICE c show --active | head -n 1 | tr ':' ' ' | sed "s/^/ /" | |
| fi | |
| echo | |
| read -p "Press Enter to continue..." | |
| } | |
| # Function to view change history | |
| view_history() { | |
| echo -e "\n${BLUE}${BOLD}DNS Change History:${NC}" | |
| echo -e "${BLUE}════════════════════${NC}" | |
| if [ -s "$HISTORY_FILE" ]; then | |
| tail -n 10 "$HISTORY_FILE" | sed "s/^/ /" | |
| echo -e "\n ${YELLOW}(Showing last 10 changes)${NC}" | |
| else | |
| echo -e " ${YELLOW}No change history available${NC}" | |
| fi | |
| echo | |
| read -p "Press Enter to continue..." | |
| } | |
| # Function to reset DNS to defaults | |
| reset_dns() { | |
| echo -e "\n${YELLOW}${BOLD}Resetting to default DNS...${NC}" | |
| # Restore from backup if it exists | |
| if [ -f /etc/resolv.conf.bak ]; then | |
| cp /etc/resolv.conf.bak /etc/resolv.conf | |
| echo -e "${GREEN}✓ Restored original DNS configuration${NC}" | |
| fi | |
| # For NetworkManager connections | |
| if command -v nmcli &> /dev/null; then | |
| connection=$(nmcli -t -f NAME c show --active | head -n 1) | |
| if [ -n "$connection" ]; then | |
| echo -e "${YELLOW}➜ Resetting NetworkManager connection: $connection${NC}" | |
| nmcli con mod "$connection" ipv4.dns "" | |
| nmcli con down "$connection" && nmcli con up "$connection" | |
| echo -e "${GREEN}✓ NetworkManager DNS settings reset${NC}" | |
| fi | |
| fi | |
| # For systemd-resolved | |
| if systemctl is-active systemd-resolved &> /dev/null; then | |
| echo -e "${YELLOW}➜ Resetting systemd-resolved${NC}" | |
| if [ -f /etc/systemd/resolved.conf.d/dns_servers.conf ]; then | |
| rm /etc/systemd/resolved.conf.d/dns_servers.conf | |
| fi | |
| systemctl restart systemd-resolved | |
| echo -e "${GREEN}✓ systemd-resolved settings reset${NC}" | |
| fi | |
| log_action "Reset DNS to default settings" | |
| echo -e "${GREEN}${BOLD}DNS reset to default settings${NC}" | |
| sleep 1 | |
| } | |
| # Show script banner | |
| show_banner() { | |
| clear | |
| echo -e "${BLUE}${BOLD}" | |
| echo " _____ _ _ _____ _____ _ " | |
| echo " | __ \| \ | |/ ____| / ____| | " | |
| echo " | | | | \| | (___ | | | |__ __ _ _ __ __ _ ___ _ __" | |
| echo " | | | | . \` |\___ \ | | | '_ \ / _\` | '_ \ / _\` |/ _ \ '__|" | |
| echo " | |__| | |\ |____) | | |____| | | | (_| | | | | (_| | __/ | " | |
| echo " |_____/|_| \_|_____/ \_____|_| |_|\__,_|_| |_|\__, |\___|_| " | |
| echo " __/ | " | |
| echo " |___/ " | |
| echo -e "${NC}" | |
| echo -e "${WHITE}${BOLD} Easy DNS Configuration for Ubuntu Systems${NC}" | |
| echo -e "${CYAN} https://github.com/yourusername/dns-changer${NC}" | |
| echo | |
| echo -e "${YELLOW}Version 2.0.0${NC}" | |
| echo | |
| sleep 1 | |
| } | |
| # Main script function | |
| main() { | |
| check_sudo | |
| setup_config | |
| show_banner | |
| while true; do | |
| choice=$(show_menu) | |
| # If menu returns non-zero (cancelled or error), retry | |
| if [ $? -ne 0 ]; then | |
| continue | |
| fi | |
| # Calculate where specific options are based on number of DNS providers | |
| num_providers=${#dns_providers[@]} | |
| reset_option=$((num_providers + 1)) | |
| show_option=$((num_providers + 2)) | |
| history_option=$((num_providers + 3)) | |
| exit_option=$((num_providers + 4)) | |
| case $choice in | |
| $exit_option) | |
| echo -e "\n${GREEN}${BOLD}Thank you for using DNS Changer. Goodbye!${NC}" | |
| exit 0 | |
| ;; | |
| $reset_option) | |
| reset_dns | |
| check_current_dns | |
| ;; | |
| $show_option) | |
| check_current_dns | |
| ;; | |
| $history_option) | |
| view_history | |
| ;; | |
| *) | |
| # Handle DNS provider selection (1 to num_providers) | |
| if [ $choice -ge 1 ] && [ $choice -le $num_providers ]; then | |
| # Get provider name by index | |
| provider_name=$(echo "${!dns_providers[@]}" | tr ' ' '\n' | sed -n "${choice}p") | |
| set_dns "$provider_name" | |
| check_current_dns | |
| else | |
| echo -e "${RED}Invalid option. Please try again.${NC}" | |
| sleep 2 | |
| fi | |
| ;; | |
| esac | |
| done | |
| } | |
| # Run the main function | |
| main |
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