#!/bin/bash

red='\033[0;31m'
green='\033[0;32m'
blue='\033[0;34m'
yellow='\033[0;33m'
plain='\033[0m'

#在此添加一些基本函数
function LOGD() {
    echo -e "${yellow}[DEG] $* ${plain}"
}

function LOGE() {
    echo -e "${red}[ERR] $* ${plain}"
}

function LOGI() {
    echo -e "${green}[INF] $* ${plain}"
}

# 检查root权限
[[ $EUID -ne 0 ]] && LOGE "错误: 您必须以root身份运行此脚本! \n" && exit 1

# 检查操作系统并设置发行版变量
if [[ -f /etc/os-release ]]; then
    source /etc/os-release
    release=$ID
elif [[ -f /usr/lib/os-release ]]; then
    source /usr/lib/os-release
    release=$ID
else
    echo "检查系统操作系统失败，请联系作者！" >&2
    exit 1
fi
echo "操作系统发行版是: $release"

os_version=""
os_version=$(grep "^VERSION_ID" /etc/os-release | cut -d '=' -f2 | tr -d '"' | tr -d '.')

# 声明变量
log_folder="${XUI_LOG_FOLDER:=/var/log}"
iplimit_log_path="${log_folder}/3xipl.log"
iplimit_banned_log_path="${log_folder}/3xipl-banned.log"

confirm() {
    if [[ $# > 1 ]]; then
        echo && read -rp "$1 [Default $2]: " temp
        if [[ "${temp}" == "" ]]; then
            temp=$2
        fi
    else
        read -rp "$1 [y/n]: " temp
    fi
    if [[ "${temp}" == "y" || "${temp}" == "Y" ]]; then
        return 0
    else
        return 1
    fi
}

confirm_restart() {
    confirm "重启面板，注意：重启面板也会重启xray" "y"
    if [[ $? == 0 ]]; then
        restart
    else
        show_menu
    fi
}

before_show_menu() {
    echo && echo -n -e "${yellow}按回车键返回主菜单: ${plain}" && read -r temp
    show_menu
}

install() {
    bash <(curl -Ls https://raw.githubusercontent.com/sky22333/shell/main/3x-ui/install.sh)
    if [[ $? == 0 ]]; then
        if [[ $# == 0 ]]; then
            start
        else
            start 0
        fi
    fi
}

update() {
    confirm "此功能将强制重新安装最新版本，数据不会丢失。您要继续吗？" "y"
    if [[ $? != 0 ]]; then
        LOGE "已取消"
        if [[ $# == 0 ]]; then
            before_show_menu
        fi
        return 0
    fi
    bash <(curl -Ls https://raw.githubusercontent.com/sky22333/shell/main/3x-ui/install.sh)
    if [[ $? == 0 ]]; then
        LOGI "更新完成，面板已自动重启 "
        before_show_menu
    fi
}

update_menu() {
    echo -e "${yellow}更新菜单${plain}"
    confirm "此功能将更新菜单到最新版本。" "y"
    if [[ $? != 0 ]]; then
        LOGE "已取消"
        if [[ $# == 0 ]]; then
            before_show_menu
        fi
        return 0
    fi

    wget -O /usr/bin/x-ui https://raw.githubusercontent.com/sky22333/shell/main/3x-ui/x-ui.sh
    chmod +x /usr/local/x-ui/x-ui.sh
    chmod +x /usr/bin/x-ui

    if [[ $? == 0 ]]; then
        echo -e "${green}更新成功。面板已自动重启。${plain}"
        exit 0
    else
        echo -e "${red}更新菜单失败。${plain}"
        return 1
    fi
}

legacy_version() {
    echo -n "输入面板版本 (如 2.4.0):"
    read -r tag_version

    if [ -z "$tag_version" ]; then
        echo "面板版本不能为空。退出。"
        exit 1
    fi
    # 在下载链接中使用输入的面板版本
    install_command="bash <(curl -Ls "https://raw.githubusercontent.com/sky22333/shell/main/3x-ui/install.sh") v$tag_version"

    echo "正在下载并安装面板版本 $tag_version..."
    eval $install_command
}

# 处理脚本文件删除的函数
delete_script() {
    rm "$0" # 删除脚本文件本身
    exit 1
}

uninstall() {
    confirm "您确定要卸载面板吗？xray也将被卸载！" "n"
    if [[ $? != 0 ]]; then
        if [[ $# == 0 ]]; then
            show_menu
        fi
        return 0
    fi
    systemctl stop x-ui
    systemctl disable x-ui
    rm /etc/systemd/system/x-ui.service -f
    systemctl daemon-reload
    systemctl reset-failed
    rm /etc/x-ui/ -rf
    rm /usr/local/x-ui/ -rf

    echo ""
    echo -e "卸载成功。\n"
    echo "如果您需要再次安装此面板，可以使用以下命令:"
    echo -e "${green}bash <(curl -Ls https://raw.githubusercontent.com/sky22333/shell/main/3x-ui/install.sh)${plain}"
    echo ""
    # 捕获SIGTERM信号
    trap delete_script SIGTERM
    delete_script
}

reset_user() {
    confirm "您确定要重置面板的用户名和密码吗？" "n"
    if [[ $? != 0 ]]; then
        if [[ $# == 0 ]]; then
            show_menu
        fi
        return 0
    fi
    
    read -rp "请设置登录用户名 [默认为随机用户名]: " config_account
    [[ -z $config_account ]] && config_account=$(date +%s%N | md5sum | cut -c 1-8)
    read -rp "请设置登录密码 [默认为随机密码]: " config_password
    [[ -z $config_password ]] && config_password=$(date +%s%N | md5sum | cut -c 1-8)

    read -rp "您要禁用当前配置的双因素认证吗？ (y/n): " twoFactorConfirm
    if [[ $twoFactorConfirm != "y" && $twoFactorConfirm != "Y" ]]; then
        /usr/local/x-ui/x-ui setting -username ${config_account} -password ${config_password} -resetTwoFactor false >/dev/null 2>&1
    else
        /usr/local/x-ui/x-ui setting -username ${config_account} -password ${config_password} -resetTwoFactor true >/dev/null 2>&1
        echo -e "双因素认证已被禁用。"
    fi
    
    echo -e "面板登录用户名已重置为: ${green} ${config_account} ${plain}"
    echo -e "面板登录密码已重置为: ${green} ${config_password} ${plain}"
    echo -e "${green} 请使用新的登录用户名和密码访问X-UI面板。请记住它们！ ${plain}"
    confirm_restart
}

gen_random_string() {
    local length="$1"
    local random_string=$(LC_ALL=C tr -dc 'a-zA-Z0-9' </dev/urandom | fold -w "$length" | head -n 1)
    echo "$random_string"
}

reset_webbasepath() {
    echo -e "${yellow}重置网页基础路径${plain}"

    read -rp "您确定要重置网页基础路径吗？ (y/n): " confirm
    if [[ $confirm != "y" && $confirm != "Y" ]]; then
        echo -e "${yellow}操作已取消。${plain}"
        return
    fi

    config_webBasePath=$(gen_random_string 18)

    # 应用新的网页基础路径设置
    /usr/local/x-ui/x-ui setting -webBasePath "${config_webBasePath}" >/dev/null 2>&1

    echo -e "网页基础路径已重置为: ${green}${config_webBasePath}${plain}"
    echo -e "${green}请使用新的网页基础路径访问面板。${plain}"
    restart
}

reset_config() {
    confirm "您确定要重置所有面板设置吗？账户数据不会丢失，用户名和密码不会改变" "n"
    if [[ $? != 0 ]]; then
        if [[ $# == 0 ]]; then
            show_menu
        fi
        return 0
    fi
    /usr/local/x-ui/x-ui setting -reset
    echo -e "所有面板设置已重置为默认值。"
    restart
}

check_config() {
    local info=$(/usr/local/x-ui/x-ui setting -show true)
    if [[ $? != 0 ]]; then
        LOGE "获取当前设置错误，请检查日志"
        show_menu
        return
    fi
    LOGI "${info}"

    local existing_webBasePath=$(echo "$info" | grep -Eo 'webBasePath: .+' | awk '{print $2}')
    local existing_port=$(echo "$info" | grep -Eo 'port: .+' | awk '{print $2}')
    local existing_cert=$(/usr/local/x-ui/x-ui setting -getCert true | grep -Eo 'cert: .+' | awk '{print $2}')
    local server_ip=$(curl -s --max-time 3 https://api.ipify.org)
    if [ -z "$server_ip" ]; then
        server_ip=$(curl -s --max-time 3 https://4.ident.me)
    fi

    if [[ -n "$existing_cert" ]]; then
        local domain=$(basename "$(dirname "$existing_cert")")

        if [[ "$domain" =~ ^[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$ ]]; then
            echo -e "${green}访问地址: https://${domain}:${existing_port}${existing_webBasePath}${plain}"
        else
            echo -e "${green}访问地址: https://${server_ip}:${existing_port}${existing_webBasePath}${plain}"
        fi
    else
        echo -e "${green}访问地址: http://${server_ip}:${existing_port}${existing_webBasePath}${plain}"
    fi
}

set_port() {
    echo -n "输入端口号[1-65535]: "
    read -r port
    if [[ -z "${port}" ]]; then
        LOGD "已取消"
        before_show_menu
    else
        /usr/local/x-ui/x-ui setting -port ${port}
        echo -e "端口已设置，请立即重启面板，并使用新端口 ${green}${port}${plain} 访问网页面板"
        confirm_restart
    fi
}

start() {
    check_status
    if [[ $? == 0 ]]; then
        echo ""
        LOGI "面板正在运行，无需再次启动，如需重启，请选择重启"
    else
        systemctl start x-ui
        sleep 2
        check_status
        if [[ $? == 0 ]]; then
            LOGI "x-ui启动成功"
        else
            LOGE "面板启动失败，可能是因为启动时间超过两秒，请稍后检查日志信息"
        fi
    fi

    if [[ $# == 0 ]]; then
        before_show_menu
    fi
}

stop() {
    check_status
    if [[ $? == 1 ]]; then
        echo ""
        LOGI "面板已停止，无需再次停止！"
    else
        systemctl stop x-ui
        sleep 2
        check_status
        if [[ $? == 1 ]]; then
            LOGI "x-ui和xray停止成功"
        else
            LOGE "面板停止失败，可能是因为停止时间超过两秒，请稍后检查日志信息"
        fi
    fi

    if [[ $# == 0 ]]; then
        before_show_menu
    fi
}

restart() {
    systemctl restart x-ui
    sleep 2
    check_status
    if [[ $? == 0 ]]; then
        LOGI "x-ui和xray重启成功"
    else
        LOGE "面板重启失败，可能是因为启动时间超过两秒，请稍后检查日志信息"
    fi
    if [[ $# == 0 ]]; then
        before_show_menu
    fi
}

status() {
    systemctl status x-ui -l
    if [[ $# == 0 ]]; then
        before_show_menu
    fi
}

enable() {
    systemctl enable x-ui
    if [[ $? == 0 ]]; then
        LOGI "x-ui设置开机自启成功"
    else
        LOGE "x-ui设置自启失败"
    fi

    if [[ $# == 0 ]]; then
        before_show_menu
    fi
}

disable() {
    systemctl disable x-ui
    if [[ $? == 0 ]]; then
        LOGI "x-ui取消自启成功"
    else
        LOGE "x-ui取消自启失败"
    fi

    if [[ $# == 0 ]]; then
        before_show_menu
    fi
}

show_log() {
    echo -e "${green}\t1.${plain} 调试日志"
    echo -e "${green}\t2.${plain} 清除所有日志"
    echo -e "${green}\t0.${plain} 返回主菜单"
    read -rp "选择一个选项: " choice

    case "$choice" in
    0)
        show_menu
        ;;
    1)
        journalctl -u x-ui -e --no-pager -f -p debug
        if [[ $# == 0 ]]; then
            before_show_menu
        fi
        ;;
    2)
        sudo journalctl --rotate
        sudo journalctl --vacuum-time=1s
        echo "所有日志已清除。"
        restart
        ;;
    *)
        echo -e "${red}无效选项。请选择一个有效数字。${plain}\n"
        show_log
        ;;
    esac
}

bbr_menu() {
    echo -e "${green}\t1.${plain} 启用BBR"
    echo -e "${green}\t2.${plain} 禁用BBR"
    echo -e "${green}\t0.${plain} 返回主菜单"
    read -rp "选择一个选项: " choice
    case "$choice" in
    0)
        show_menu
        ;;
    1)
        enable_bbr
        bbr_menu
        ;;
    2)
        disable_bbr
        bbr_menu
        ;;
    *)
        echo -e "${red}无效选项。请选择一个有效数字。${plain}\n"
        bbr_menu
        ;;
    esac
}

disable_bbr() {

    if ! grep -q "net.core.default_qdisc=fq" /etc/sysctl.conf || ! grep -q "net.ipv4.tcp_congestion_control=bbr" /etc/sysctl.conf; then
        echo -e "${yellow}BBR当前未启用。${plain}"
        before_show_menu
    fi

    # Replace BBR with CUBIC configurations
    sed -i 's/net.core.default_qdisc=fq/net.core.default_qdisc=pfifo_fast/' /etc/sysctl.conf
    sed -i 's/net.ipv4.tcp_congestion_control=bbr/net.ipv4.tcp_congestion_control=cubic/' /etc/sysctl.conf

    # 应用更改
    sysctl -p

    # Verify that BBR is replaced with CUBIC
    if [[ $(sysctl net.ipv4.tcp_congestion_control | awk '{print $3}') == "cubic" ]]; then
        echo -e "${green}BBR已成功替换为CUBIC。${plain}"
    else
        echo -e "${red}替换BBR为CUBIC失败。请检查您的系统配置。${plain}"
    fi
}

enable_bbr() {
    if grep -q "net.core.default_qdisc=fq" /etc/sysctl.conf && grep -q "net.ipv4.tcp_congestion_control=bbr" /etc/sysctl.conf; then
        echo -e "${green}BBR已经启用！${plain}"
        before_show_menu
    fi

    # 检查操作系统并安装必要的软件包
    case "${release}" in
    ubuntu | debian | armbian)
        apt-get update && apt-get install -yqq --no-install-recommends ca-certificates
        ;;
    centos | rhel | almalinux | rocky | ol)
        yum -y update && yum -y install ca-certificates
        ;;
    fedora | amzn | virtuozzo)
        dnf -y update && dnf -y install ca-certificates
        ;;
    arch | manjaro | parch)
        pacman -Sy --noconfirm ca-certificates
        ;;
    *)
        echo -e "${red}不支持的操作系统。请检查脚本并手动安装必要的软件包。${plain}\n"
        exit 1
        ;;
    esac

    # 启用BBR
    echo "net.core.default_qdisc=fq" | tee -a /etc/sysctl.conf
    echo "net.ipv4.tcp_congestion_control=bbr" | tee -a /etc/sysctl.conf

    # Apply changes
    sysctl -p

    # 验证BBR是否已启用
    if [[ $(sysctl net.ipv4.tcp_congestion_control | awk '{print $3}') == "bbr" ]]; then
        echo -e "${green}BBR已成功启用。${plain}"
    else
        echo -e "${red}启用BBR失败。请检查您的系统配置。${plain}"
    fi
}

update_shell() {
    wget -O /usr/bin/x-ui -N https://raw.githubusercontent.com/sky22333/shell/main/3x-ui/x-ui.sh
    if [[ $? != 0 ]]; then
        echo ""
        LOGE "下载脚本失败，请检查机器是否能连接Github"
        before_show_menu
    else
        chmod +x /usr/bin/x-ui
        LOGI "升级脚本成功，请重新运行脚本"
        before_show_menu
    fi
}

# 0: 运行中, 1: 未运行, 2: 未安装
check_status() {
    if [[ ! -f /etc/systemd/system/x-ui.service ]]; then
        return 2
    fi
    temp=$(systemctl status x-ui | grep Active | awk '{print $3}' | cut -d "(" -f2 | cut -d ")" -f1)
    if [[ "${temp}" == "running" ]]; then
        return 0
    else
        return 1
    fi
}

check_enabled() {
    temp=$(systemctl is-enabled x-ui)
    if [[ "${temp}" == "enabled" ]]; then
        return 0
    else
        return 1
    fi
}

check_uninstall() {
    check_status
    if [[ $? != 2 ]]; then
        echo ""
        LOGE "面板已安装，请勿重复安装"
        if [[ $# == 0 ]]; then
            before_show_menu
        fi
        return 1
    else
        return 0
    fi
}

check_install() {
    check_status
    if [[ $? == 2 ]]; then
        echo ""
        LOGE "请先安装面板"
        if [[ $# == 0 ]]; then
            before_show_menu
        fi
        return 1
    else
        return 0
    fi
}

show_status() {
    check_status
    case $? in
    0)
        echo -e "面板状态: ${green}运行中${plain}"
        show_enable_status
        ;;
    1)
        echo -e "面板状态: ${yellow}未运行${plain}"
        show_enable_status
        ;;
    2)
        echo -e "面板状态: ${red}未安装${plain}"
        ;;
    esac
    show_xray_status
}

show_enable_status() {
    check_enabled
    if [[ $? == 0 ]]; then
        echo -e "开机自启: ${green}是${plain}"
    else
        echo -e "开机自启: ${red}否${plain}"
    fi
}

check_xray_status() {
    count=$(ps -ef | grep "xray-linux" | grep -v "grep" | wc -l)
    if [[ count -ne 0 ]]; then
        return 0
    else
        return 1
    fi
}

show_xray_status() {
    check_xray_status
    if [[ $? == 0 ]]; then
        echo -e "xray状态: ${green}运行中${plain}"
    else
        echo -e "xray状态: ${red}未运行${plain}"
    fi
}

firewall_menu() {
    echo -e "${green}\t1.${plain} ${green}安装${plain} 防火墙"
    echo -e "${green}\t2.${plain} 端口列表 [编号]"
    echo -e "${green}\t3.${plain} ${green}开放${plain} 端口"
    echo -e "${green}\t4.${plain} ${red}删除${plain} 端口"
    echo -e "${green}\t5.${plain} ${green}启用${plain} 防火墙"
    echo -e "${green}\t6.${plain} ${red}禁用${plain} 防火墙"
    echo -e "${green}\t7.${plain} 防火墙状态"
    echo -e "${green}\t0.${plain} 返回主菜单"
    read -rp "选择一个选项: " choice
    case "$choice" in
    0)
        show_menu
        ;;
    1)
        install_firewall
        firewall_menu
        ;;
    2)
        ufw status numbered
        firewall_menu
        ;;
    3)
        open_ports
        firewall_menu
        ;;
    4)
        delete_ports
        firewall_menu
        ;;
    5)
        ufw enable
        firewall_menu
        ;;
    6)
        ufw disable
        firewall_menu
        ;;
    7)
        ufw status verbose
        firewall_menu
        ;;
    *)
        echo -e "${red}无效选项。请选择有效数字.${plain}\n"
        firewall_menu
        ;;
    esac
}

install_firewall() {
    if ! command -v ufw &>/dev/null; then
        echo "ufw防火墙未安装，正在安装..."
        apt-get update
        apt-get install -y ufw
    else
        echo "ufw防火墙已安装"
    fi

    # Check if the firewall is inactive
    if ufw status | grep -q "Status: active"; then
        echo "防火墙已激活"
    else
        echo "正在激活防火墙..."
        # Open the necessary ports
        ufw allow ssh
        ufw allow http
        ufw allow https
        ufw allow 2053/tcp #webPort
        ufw allow 2096/tcp #subport

        # Enable the firewall
        ufw --force enable
    fi
}

open_ports() {
    # Prompt the user to enter the ports they want to open
    read -rp "输入要开放的端口 (例如 80,443,2053 或范围 400-500): " ports

    # Check if the input is valid
    if ! [[ $ports =~ ^([0-9]+|[0-9]+-[0-9]+)(,([0-9]+|[0-9]+-[0-9]+))*$ ]]; then
        echo "错误: 输入无效。请输入逗号分隔的端口列表或端口范围 (例如 80,443,2053 或 400-500)。" >&2
        exit 1
    fi

    # Open the specified ports using ufw
    IFS=',' read -ra PORT_LIST <<<"$ports"
    for port in "${PORT_LIST[@]}"; do
        if [[ $port == *-* ]]; then
            # Split the range into start and end ports
            start_port=$(echo $port | cut -d'-' -f1)
            end_port=$(echo $port | cut -d'-' -f2)
            # Open the port range
            ufw allow $start_port:$end_port/tcp
            ufw allow $start_port:$end_port/udp
        else
            # Open the single port
            ufw allow "$port"
        fi
    done

    # Confirm that the ports are opened
    echo "已开放指定端口:"
    for port in "${PORT_LIST[@]}"; do
        if [[ $port == *-* ]]; then
            start_port=$(echo $port | cut -d'-' -f1)
            end_port=$(echo $port | cut -d'-' -f2)
            # Check if the port range has been successfully opened
            (ufw status | grep -q "$start_port:$end_port") && echo "$start_port-$end_port"
        else
            # Check if the individual port has been successfully opened
            (ufw status | grep -q "$port") && echo "$port"
        fi
    done
}

delete_ports() {
    # Display current rules with numbers
    echo "当前UFW规则:"
    ufw status numbered

    # Ask the user how they want to delete rules
    echo "您想要通过以下方式删除规则:"
    echo "1) 规则编号"
    echo "2) 端口"
    read -rp "输入您的选择 (1 或 2): " choice

    if [[ $choice -eq 1 ]]; then
        # Deleting by rule numbers
        read -rp "输入要删除的规则编号 (1, 2, 等): " rule_numbers

        # Validate the input
        if ! [[ $rule_numbers =~ ^([0-9]+)(,[0-9]+)*$ ]]; then
            echo "错误: 输入无效。请输入逗号分隔的规则编号列表。" >&2
            exit 1
        fi

        # Split numbers into an array
        IFS=',' read -ra RULE_NUMBERS <<<"$rule_numbers"
        for rule_number in "${RULE_NUMBERS[@]}"; do
            # Delete the rule by number
            ufw delete "$rule_number" || echo "删除规则编号 $rule_number 失败"
        done

        echo "选定的规则已被删除。"

    elif [[ $choice -eq 2 ]]; then
        # Deleting by ports
        read -rp "输入要删除的端口 (例如 80,443,2053 或范围 400-500): " ports

        # Validate the input
        if ! [[ $ports =~ ^([0-9]+|[0-9]+-[0-9]+)(,([0-9]+|[0-9]+-[0-9]+))*$ ]]; then
            echo "错误: 输入无效。请输入逗号分隔的端口列表或端口范围 (例如 80,443,2053 或 400-500)。" >&2
            exit 1
        fi

        # Split ports into an array
        IFS=',' read -ra PORT_LIST <<<"$ports"
        for port in "${PORT_LIST[@]}"; do
            if [[ $port == *-* ]]; then
                # Split the port range
                start_port=$(echo $port | cut -d'-' -f1)
                end_port=$(echo $port | cut -d'-' -f2)
                # Delete the port range
                ufw delete allow $start_port:$end_port/tcp
                ufw delete allow $start_port:$end_port/udp
            else
                # Delete a single port
                ufw delete allow "$port"
            fi
        done

        # Confirmation of deletion
        echo "已删除指定端口:"
        for port in "${PORT_LIST[@]}"; do
            if [[ $port == *-* ]]; then
                start_port=$(echo $port | cut -d'-' -f1)
                end_port=$(echo $port | cut -d'-' -f2)
                # Check if the port range has been deleted
                (ufw status | grep -q "$start_port:$end_port") || echo "$start_port-$end_port"
            else
                # Check if the individual port has been deleted
                (ufw status | grep -q "$port") || echo "$port"
            fi
        done
    else
        echo "${red}Error:${plain} Invalid choice. Please enter 1 or 2." >&2
        exit 1
    fi
}

update_geo() {
    echo -e "${green}\t1.${plain} Loyalsoldier (geoip.dat, geosite.dat)"
    echo -e "${green}\t2.${plain} chocolate4u (geoip_IR.dat, geosite_IR.dat)"
    echo -e "${green}\t3.${plain} runetfreedom (geoip_RU.dat, geosite_RU.dat)"
    echo -e "${green}\t0.${plain} 返回主菜单"
    read -rp "选择一个选项: " choice

    cd /usr/local/x-ui/bin

    case "$choice" in
    0)
        show_menu
        ;;
    1)
        systemctl stop x-ui
        rm -f geoip.dat geosite.dat
        wget -N https://github.com/Loyalsoldier/v2ray-rules-dat/releases/latest/download/geoip.dat
        wget -N https://github.com/Loyalsoldier/v2ray-rules-dat/releases/latest/download/geosite.dat
        echo -e "${green}Loyalsoldier 数据集已成功更新!${plain}"
        restart
        ;;
    2)
        systemctl stop x-ui
        rm -f geoip_IR.dat geosite_IR.dat
        wget -O geoip_IR.dat -N https://github.com/chocolate4u/Iran-v2ray-rules/releases/latest/download/geoip.dat
        wget -O geosite_IR.dat -N https://github.com/chocolate4u/Iran-v2ray-rules/releases/latest/download/geosite.dat
        echo -e "${green}chocolate4u 数据集已成功更新!${plain}"
        restart
        ;;
    3)
        systemctl stop x-ui
        rm -f geoip_RU.dat geosite_RU.dat
        wget -O geoip_RU.dat -N https://github.com/runetfreedom/russia-v2ray-rules-dat/releases/latest/download/geoip.dat
        wget -O geosite_RU.dat -N https://github.com/runetfreedom/russia-v2ray-rules-dat/releases/latest/download/geosite.dat
        echo -e "${green}runetfreedom 数据集已成功更新!${plain}"
        restart
        ;;
    *)
        echo -e "${red}无效选项。请选择有效数字.${plain}\n"
        update_geo
        ;;
    esac

    before_show_menu
}

install_acme() {
    # Check if acme.sh is already installed
    if command -v ~/.acme.sh/acme.sh &>/dev/null; then
        LOGI "acme.sh 已安装。"
        return 0
    fi

    LOGI "正在安装 acme.sh..."
    cd ~ || return 1 # Ensure you can change to the home directory

    curl -s https://get.acme.sh | sh
    if [ $? -ne 0 ]; then
        LOGE "acme.sh 安装失败。"
        return 1
    else
        LOGI "acme.sh 安装成功。"
    fi

    return 0
}

ssl_cert_issue_main() {
    echo -e "${green}\t1.${plain} 获取 SSL"
    echo -e "${green}\t2.${plain} 撤销"
    echo -e "${green}\t3.${plain} 强制续期"
    echo -e "${green}\t4.${plain} 显示现有域名"
    echo -e "${green}\t5.${plain} 为面板设置证书路径"
    echo -e "${green}\t0.${plain} 返回主菜单"

    read -rp "选择一个选项: " choice
    case "$choice" in
    0)
        show_menu
        ;;
    1)
        ssl_cert_issue
        ssl_cert_issue_main
        ;;
    2)
        local domains=$(find /root/cert/ -mindepth 1 -maxdepth 1 -type d -exec basename {} \;)
        if [ -z "$domains" ]; then
            echo "未找到可撤销的证书。"
        else
            echo "现有域名:"
            echo "$domains"
            read -rp "请从列表中输入要撤销证书的域名: " domain
            if echo "$domains" | grep -qw "$domain"; then
                ~/.acme.sh/acme.sh --revoke -d ${domain}
                LOGI "域名 $domain 的证书已撤销"
            else
                echo "输入的域名无效。"
            fi
        fi
        ssl_cert_issue_main
        ;;
    3)
        local domains=$(find /root/cert/ -mindepth 1 -maxdepth 1 -type d -exec basename {} \;)
        if [ -z "$domains" ]; then
            echo "未找到可续期的证书。"
        else
            echo "现有域名:"
            echo "$domains"
            read -rp "请从列表中输入要续期SSL证书的域名: " domain
            if echo "$domains" | grep -qw "$domain"; then
                ~/.acme.sh/acme.sh --renew -d ${domain} --force
                LOGI "域名 $domain 的证书已强制续期"
            else
                echo "输入的域名无效。"
            fi
        fi
        ssl_cert_issue_main
        ;;
    4)
        local domains=$(find /root/cert/ -mindepth 1 -maxdepth 1 -type d -exec basename {} \;)
        if [ -z "$domains" ]; then
            echo "未找到证书。"
        else
            echo "现有域名及其路径:"
            for domain in $domains; do
                local cert_path="/root/cert/${domain}/fullchain.pem"
                local key_path="/root/cert/${domain}/privkey.pem"
                if [[ -f "${cert_path}" && -f "${key_path}" ]]; then
                    echo -e "域名: ${domain}"
                    echo -e "\t证书路径: ${cert_path}"
                    echo -e "\t私钥路径: ${key_path}"
                else
                    echo -e "域名: ${domain} - 证书或密钥缺失。"
                fi
            done
        fi
        ssl_cert_issue_main
        ;;
    5)
        local domains=$(find /root/cert/ -mindepth 1 -maxdepth 1 -type d -exec basename {} \;)
        if [ -z "$domains" ]; then
            echo "未找到证书。"
        else
            echo "可用域名:"
            echo "$domains"
            read -rp "请选择要设置面板路径的域名: " domain

            if echo "$domains" | grep -qw "$domain"; then
                local webCertFile="/root/cert/${domain}/fullchain.pem"
                local webKeyFile="/root/cert/${domain}/privkey.pem"

                if [[ -f "${webCertFile}" && -f "${webKeyFile}" ]]; then
                    /usr/local/x-ui/x-ui cert -webCert "$webCertFile" -webCertKey "$webKeyFile"
                    echo "域名 $domain 的面板路径已设置"
                    echo "  - 证书文件: $webCertFile"
                    echo "  - 私钥文件: $webKeyFile"
                    restart
                else
                    echo "未找到域名 $domain 的证书或私钥。"
                fi
            else
                echo "输入的域名无效。"
            fi
        fi
        ssl_cert_issue_main
        ;;

    *)
        echo -e "${red}无效选项。请选择有效数字.${plain}\n"
        ssl_cert_issue_main
        ;;
    esac
}

ssl_cert_issue() {
    local existing_webBasePath=$(/usr/local/x-ui/x-ui setting -show true | grep -Eo 'webBasePath: .+' | awk '{print $2}')
    local existing_port=$(/usr/local/x-ui/x-ui setting -show true | grep -Eo 'port: .+' | awk '{print $2}')
    # check for acme.sh first
    if ! command -v ~/.acme.sh/acme.sh &>/dev/null; then
        echo "未找到 acme.sh，我们将安装它"
        install_acme
        if [ $? -ne 0 ]; then
            LOGE "安装 acme 失败，请检查日志"
            exit 1
        fi
    fi

    # install socat second
    case "${release}" in
    ubuntu | debian | armbian)
        apt-get update && apt-get install socat -y
        ;;
    centos | rhel | almalinux | rocky | ol)
        yum -y update && yum -y install socat
        ;;
    fedora | amzn | virtuozzo)
        dnf -y update && dnf -y install socat
        ;;
    arch | manjaro | parch)
        pacman -Sy --noconfirm socat
        ;;
    *)
        echo -e "${red}Unsupported operating system. Please check the script and install the necessary packages manually.${plain}\n"
        exit 1
        ;;
    esac
    if [ $? -ne 0 ]; then
        LOGE "安装 socat 失败，请检查日志"
        exit 1
    else
        LOGI "安装 socat 成功..."
    fi

    # get the domain here, and we need to verify it
    local domain=""
    read -rp "请输入您的域名: " domain
    LOGD "您的域名是: ${domain}，正在检查..."

    # check if there already exists a certificate
    local currentCert=$(~/.acme.sh/acme.sh --list | tail -1 | awk '{print $1}')
    if [ "${currentCert}" == "${domain}" ]; then
        local certInfo=$(~/.acme.sh/acme.sh --list)
        LOGE "系统已有此域名的证书。无法重复申请。当前证书详情:"
        LOGI "$certInfo"
        exit 1
    else
        LOGI "您的域名现在可以申请证书了..."
    fi

    # create a directory for the certificate
    certPath="/root/cert/${domain}"
    if [ ! -d "$certPath" ]; then
        mkdir -p "$certPath"
    else
        rm -rf "$certPath"
        mkdir -p "$certPath"
    fi

    # get the port number for the standalone server
    local WebPort=80
    read -rp "请选择使用的端口 (默认为 80): " WebPort
    if [[ ${WebPort} -gt 65535 || ${WebPort} -lt 1 ]]; then
        LOGE "您输入的 ${WebPort} 无效，将使用默认端口 80。"
        WebPort=80
    fi
    LOGI "将使用端口: ${WebPort} 申请证书。请确保此端口已开放。"

    # issue the certificate
    ~/.acme.sh/acme.sh --set-default-ca --server letsencrypt
    ~/.acme.sh/acme.sh --issue -d ${domain} --listen-v6 --standalone --httpport ${WebPort} --force
    if [ $? -ne 0 ]; then
        LOGE "申请证书失败，请检查日志。"
        rm -rf ~/.acme.sh/${domain}
        exit 1
    else
        LOGE "申请证书成功，正在安装证书..."
    fi

    reloadCmd="x-ui restart"

    LOGI "ACME 的默认 --reloadcmd 是: ${yellow}x-ui restart"
    LOGI "此命令将在每次证书申请和续期时运行。"
    read -rp "您想要修改 ACME 的 --reloadcmd 吗? (y/n): " setReloadcmd
    if [[ "$setReloadcmd" == "y" || "$setReloadcmd" == "Y" ]]; then
        echo -e "\n${green}\t1.${plain} 预设: systemctl reload nginx ; x-ui restart"
        echo -e "${green}\t2.${plain} 输入您自己的命令"
        echo -e "${green}\t0.${plain} 保持默认重载命令"
        read -rp "选择一个选项: " choice
        case "$choice" in
        1)
            LOGI "重载命令是: systemctl reload nginx ; x-ui restart"
            reloadCmd="systemctl reload nginx ; x-ui restart"
            ;;
        2)  
            LOGD "建议将 x-ui restart 放在最后，这样即使其他服务失败也不会出错"
            read -rp "请输入您的重载命令 (例如: systemctl reload nginx ; x-ui restart): " reloadCmd
            LOGI "您的重载命令是: ${reloadCmd}"
            ;;
        *)
            LOGI "保持默认重载命令"
            ;;
        esac
    fi

    # install the certificate
    ~/.acme.sh/acme.sh --installcert -d ${domain} \
        --key-file /root/cert/${domain}/privkey.pem \
        --fullchain-file /root/cert/${domain}/fullchain.pem --reloadcmd "${reloadCmd}"

    if [ $? -ne 0 ]; then
        LOGE "安装证书失败，退出。"
        rm -rf ~/.acme.sh/${domain}
        exit 1
    else
        LOGI "安装证书成功，启用自动续期..."
    fi

    # enable auto-renew
    ~/.acme.sh/acme.sh --upgrade --auto-upgrade
    if [ $? -ne 0 ]; then
        LOGE "自动续期失败，证书详情:"
        ls -lah cert/*
        chmod 755 $certPath/*
        exit 1
    else
        LOGI "自动续期成功，证书详情:"
        ls -lah cert/*
        chmod 755 $certPath/*
    fi

    # Prompt user to set panel paths after successful certificate installation
    read -rp "您想要为面板设置此证书吗? (y/n): " setPanel
    if [[ "$setPanel" == "y" || "$setPanel" == "Y" ]]; then
        local webCertFile="/root/cert/${domain}/fullchain.pem"
        local webKeyFile="/root/cert/${domain}/privkey.pem"

        if [[ -f "$webCertFile" && -f "$webKeyFile" ]]; then
            /usr/local/x-ui/x-ui cert -webCert "$webCertFile" -webCertKey "$webKeyFile"
            LOGI "域名 $domain 的面板路径已设置"
            LOGI "  - Certificate File: $webCertFile"
            LOGI "  - Private Key File: $webKeyFile"
            echo -e "${green}Access URL: https://${domain}:${existing_port}${existing_webBasePath}${plain}"
            restart
        else
            LOGE "错误: 未找到域名 $domain 的证书或私钥文件。"
        fi
    else
        LOGI "跳过面板路径设置。"
    fi
}

ssl_cert_issue_CF() {
    local existing_webBasePath=$(/usr/local/x-ui/x-ui setting -show true | grep -Eo 'webBasePath: .+' | awk '{print $2}')
    local existing_port=$(/usr/local/x-ui/x-ui setting -show true | grep -Eo 'port: .+' | awk '{print $2}')
    LOGI "****** 使用说明 ******"
    LOGI "请按照以下步骤完成流程:"
    LOGI "1. Cloudflare 注册邮箱."
    LOGI "2. Cloudflare 全局 API 密钥."
    LOGI "3. 域名."
    LOGI "4. 证书颁发后，您将被提示为面板设置证书（可选）."
    LOGI "5. 脚本还支持安装后自动续期 SSL 证书."

    confirm "您确认信息并希望继续吗? [y/n]" "y"

    if [ $? -eq 0 ]; then
        # Check for acme.sh first
        if ! command -v ~/.acme.sh/acme.sh &>/dev/null; then
            echo "未找到 acme.sh。我们将安装它。"
            install_acme
            if [ $? -ne 0 ]; then
                LOGE "安装 acme 失败，请检查日志。"
                exit 1
            fi
        fi

        CF_Domain=""

        LOGD "请设置域名:"
        read -rp "在此输入您的域名: " CF_Domain
        LOGD "您的域名设置为: ${CF_Domain}"

        # Set up Cloudflare API details
        CF_GlobalKey=""
        CF_AccountEmail=""
        LOGD "请设置 API 密钥:"
        read -rp "在此输入您的密钥: " CF_GlobalKey
        LOGD "您的 API 密钥是: ${CF_GlobalKey}"

        LOGD "请设置注册邮箱:"
        read -rp "在此输入您的邮箱: " CF_AccountEmail
        LOGD "您的注册邮箱地址是: ${CF_AccountEmail}"

        # Set the default CA to Let's Encrypt
        ~/.acme.sh/acme.sh --set-default-ca --server letsencrypt
        if [ $? -ne 0 ]; then
            LOGE "默认CA Let'sEncrypt 失败，脚本退出..."
            exit 1
        fi

        export CF_Key="${CF_GlobalKey}"
        export CF_Email="${CF_AccountEmail}"

        # Issue the certificate using Cloudflare DNS
        ~/.acme.sh/acme.sh --issue --dns dns_cf -d ${CF_Domain} -d *.${CF_Domain} --log --force
        if [ $? -ne 0 ]; then
            LOGE "证书申请失败，脚本退出..."
            exit 1
        else
            LOGI "证书申请成功，正在安装..."
        fi

         # Install the certificate
        certPath="/root/cert/${CF_Domain}"
        if [ -d "$certPath" ]; then
            rm -rf ${certPath}
        fi

        mkdir -p ${certPath}
        if [ $? -ne 0 ]; then
            LOGE "创建目录失败: ${certPath}"
            exit 1
        fi

        reloadCmd="x-ui restart"

        LOGI "ACME 的默认 --reloadcmd 是: ${yellow}x-ui restart"
        LOGI "此命令将在每次证书申请和续期时运行。"
        read -rp "您想要修改 ACME 的 --reloadcmd 吗? (y/n): " setReloadcmd
        if [[ "$setReloadcmd" == "y" || "$setReloadcmd" == "Y" ]]; then
            echo -e "\n${green}\t1.${plain} 预设: systemctl reload nginx ; x-ui restart"
            echo -e "${green}\t2.${plain} 输入您自己的命令"
            echo -e "${green}\t0.${plain} 保持默认重载命令"
            read -rp "选择一个选项: " choice
            case "$choice" in
            1)
                LOGI "重载命令是: systemctl reload nginx ; x-ui restart"
                reloadCmd="systemctl reload nginx ; x-ui restart"
                ;;
            2)  
                LOGD "建议将 x-ui restart 放在最后，这样即使其他服务失败也不会出错"
                read -rp "请输入您的重载命令 (例如: systemctl reload nginx ; x-ui restart): " reloadCmd
                LOGI "您的重载命令是: ${reloadCmd}"
                ;;
            *)
                LOGI "保持默认重载命令"
                ;;
            esac
        fi
        ~/.acme.sh/acme.sh --installcert -d ${CF_Domain} -d *.${CF_Domain} \
            --key-file ${certPath}/privkey.pem \
            --fullchain-file ${certPath}/fullchain.pem --reloadcmd "${reloadCmd}"
        
        if [ $? -ne 0 ]; then
            LOGE "证书安装失败，脚本退出..."
            exit 1
        else
            LOGI "证书安装成功，开启自动更新..."
        fi

        # Enable auto-update
        ~/.acme.sh/acme.sh --upgrade --auto-upgrade
        if [ $? -ne 0 ]; then
            LOGE "自动更新设置失败，脚本退出..."
            exit 1
        else
            LOGI "证书已安装并开启自动续期。具体信息如下:"
            ls -lah ${certPath}/*
            chmod 755 ${certPath}/*
        fi

        # Prompt user to set panel paths after successful certificate installation
        read -rp "您想要为面板设置此证书吗? (y/n): " setPanel
        if [[ "$setPanel" == "y" || "$setPanel" == "Y" ]]; then
            local webCertFile="${certPath}/fullchain.pem"
            local webKeyFile="${certPath}/privkey.pem"

            if [[ -f "$webCertFile" && -f "$webKeyFile" ]]; then
                /usr/local/x-ui/x-ui cert -webCert "$webCertFile" -webCertKey "$webKeyFile"
                LOGI "域名 $CF_Domain 的面板路径已设置"
                LOGI "  - Certificate File: $webCertFile"
                LOGI "  - Private Key File: $webKeyFile"
                echo -e "${green}Access URL: https://${CF_Domain}:${existing_port}${existing_webBasePath}${plain}"
                restart
            else
                LOGE "错误: 未找到域名 $CF_Domain 的证书或私钥文件。"
            fi
        else
            LOGI "跳过面板路径设置。"
        fi
    else
        show_menu
    fi
}

run_speedtest() {
    # Check if Speedtest is already installed
    if ! command -v speedtest &>/dev/null; then
        # If not installed, determine installation method
        if command -v snap &>/dev/null; then
            # Use snap to install Speedtest
            echo "使用 snap 安装测速工具..."
            snap install speedtest
        else
            # Fallback to using package managers
            local pkg_manager=""
            local speedtest_install_script=""

            if command -v dnf &>/dev/null; then
                pkg_manager="dnf"
                speedtest_install_script="https://packagecloud.io/install/repositories/ookla/speedtest-cli/script.rpm.sh"
            elif command -v yum &>/dev/null; then
                pkg_manager="yum"
                speedtest_install_script="https://packagecloud.io/install/repositories/ookla/speedtest-cli/script.rpm.sh"
            elif command -v apt-get &>/dev/null; then
                pkg_manager="apt-get"
                speedtest_install_script="https://packagecloud.io/install/repositories/ookla/speedtest-cli/script.deb.sh"
            elif command -v apt &>/dev/null; then
                pkg_manager="apt"
                speedtest_install_script="https://packagecloud.io/install/repositories/ookla/speedtest-cli/script.deb.sh"
            fi

            if [[ -z $pkg_manager ]]; then
                echo "错误: 未找到包管理器。您可能需要手动安装测速工具。"
                return 1
            else
                echo "使用 $pkg_manager 安装测速工具..."
                curl -s $speedtest_install_script | bash
                $pkg_manager install -y speedtest
            fi
        fi
    fi

    speedtest
}



ip_validation() {
    ipv6_regex="^(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))$"
    ipv4_regex="^((25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]?|0)\.){3}(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]?|0)$"
}

iplimit_main() {
    echo -e "\n${green}\t1.${plain} 安装 Fail2ban 并配置 IP 限制"
    echo -e "${green}\t2.${plain} 更改封禁时长"
    echo -e "${green}\t3.${plain} 解封所有用户"
    echo -e "${green}\t4.${plain} 封禁日志"
    echo -e "${green}\t5.${plain} 封禁 IP 地址"
    echo -e "${green}\t6.${plain} 解封 IP 地址"
    echo -e "${green}\t7.${plain} 实时日志"
    echo -e "${green}\t8.${plain} 服务状态"
    echo -e "${green}\t9.${plain} 重启服务"
    echo -e "${green}\t10.${plain} 卸载 Fail2ban 和 IP 限制"
    echo -e "${green}\t0.${plain} 返回主菜单"
    read -rp "选择一个选项: " choice
    case "$choice" in
    0)
        show_menu
        ;;
    1)
        confirm "继续安装 Fail2ban 和 IP 限制?" "y"
        if [[ $? == 0 ]]; then
            install_iplimit
        else
            iplimit_main
        fi
        ;;
    2)
        read -rp "请输入新的封禁时长（分钟）[默认 30]: " NUM
        if [[ $NUM =~ ^[0-9]+$ ]]; then
            create_iplimit_jails ${NUM}
            systemctl restart fail2ban
        else
            echo -e "${red}${NUM} 不是数字! 请重试.${plain}"
        fi
        iplimit_main
        ;;
    3)
        confirm "继续从 IP 限制监狱中解封所有用户?" "y"
        if [[ $? == 0 ]]; then
            fail2ban-client reload --restart --unban 3x-ipl
            truncate -s 0 "${iplimit_banned_log_path}"
            echo -e "${green}所有用户解封成功.${plain}"
            iplimit_main
        else
            echo -e "${yellow}已取消.${plain}"
        fi
        iplimit_main
        ;;
    4)
        show_banlog
        iplimit_main
        ;;
    5)
        read -rp "输入要封禁的IP地址: " ban_ip
        ip_validation
        if [[ $ban_ip =~ $ipv4_regex || $ban_ip =~ $ipv6_regex ]]; then
            fail2ban-client set 3x-ipl banip "$ban_ip"
            echo -e "${green}IP 地址 ${ban_ip} 已成功封禁.${plain}"
        else
            echo -e "${red}无效的 IP 地址格式! 请重试.${plain}"
        fi
        iplimit_main
        ;;
    6)
        read -rp "输入要解封的IP地址: " unban_ip
        ip_validation
        if [[ $unban_ip =~ $ipv4_regex || $unban_ip =~ $ipv6_regex ]]; then
            fail2ban-client set 3x-ipl unbanip "$unban_ip"
            echo -e "${green}IP 地址 ${unban_ip} 已成功解封.${plain}"
        else
            echo -e "${red}无效的 IP 地址格式! 请重试.${plain}"
        fi
        iplimit_main
        ;;
    7)
        tail -f /var/log/fail2ban.log
        iplimit_main
        ;;
    8)
        service fail2ban status
        iplimit_main
        ;;
    9)
        systemctl restart fail2ban
        iplimit_main
        ;;
    10)
        remove_iplimit
        iplimit_main
        ;;
    *)
        echo -e "${red}无效选项。请选择有效数字.${plain}\n"
        iplimit_main
        ;;
    esac
}

install_iplimit() {
    if ! command -v fail2ban-client &>/dev/null; then
        echo -e "${green}Fail2ban 未安装。正在安装...!${plain}\n"

        # Check the OS and install necessary packages
        case "${release}" in
        ubuntu)
            apt-get update
            if [[ "${os_version}" -ge 24 ]]; then
                apt-get install python3-pip -y
                python3 -m pip install pyasynchat --break-system-packages
            fi
            apt-get install fail2ban -y
            ;;
        debian)
            apt-get update
            if [ "$os_version" -ge 12 ]; then
                apt-get install -y python3-systemd
            fi
            apt-get install -y fail2ban
            ;;
        armbian)
            apt-get update && apt-get install fail2ban -y
            ;;
        centos | rhel | almalinux | rocky | ol)
            yum update -y && yum install epel-release -y
            yum -y install fail2ban
            ;;
        fedora | amzn | virtuozzo)
            dnf -y update && dnf -y install fail2ban
            ;;
        arch | manjaro | parch)
            pacman -Syu --noconfirm fail2ban
            ;;
        *)
            echo -e "${red}不支持的操作系统。请检查脚本并手动安装必要的软件包。${plain}\n"
            exit 1
            ;;
        esac

        if ! command -v fail2ban-client &>/dev/null; then
            echo -e "${red}Fail2ban 安装失败。${plain}\n"
            exit 1
        fi

        echo -e "${green}Fail2ban 安装成功!${plain}\n"
    else
        echo -e "${yellow}Fail2ban 已安装。${plain}\n"
    fi

    echo -e "${green}正在配置 IP 限制...${plain}\n"

    # make sure there's no conflict for jail files
    iplimit_remove_conflicts

    # Check if log file exists
    if ! test -f "${iplimit_banned_log_path}"; then
        touch ${iplimit_banned_log_path}
    fi

    # Check if service log file exists so fail2ban won't return error
    if ! test -f "${iplimit_log_path}"; then
        touch ${iplimit_log_path}
    fi

    # Create the iplimit jail files
    # we didn't pass the bantime here to use the default value
    create_iplimit_jails

    # Launching fail2ban
    if ! systemctl is-active --quiet fail2ban; then
        systemctl start fail2ban
    else
        systemctl restart fail2ban
    fi
    systemctl enable fail2ban

    echo -e "${green}IP 限制安装和配置成功!${plain}\n"
    before_show_menu
}

remove_iplimit() {
    echo -e "${green}\t1.${plain} 仅移除 IP 限制配置"
    echo -e "${green}\t2.${plain} 卸载 Fail2ban 和 IP 限制"
    echo -e "${green}\t0.${plain} 返回主菜单"
    read -rp "选择一个选项: " num
    case "$num" in
    1)
        rm -f /etc/fail2ban/filter.d/3x-ipl.conf
        rm -f /etc/fail2ban/action.d/3x-ipl.conf
        rm -f /etc/fail2ban/jail.d/3x-ipl.conf
        systemctl restart fail2ban
        echo -e "${green}IP 限制移除成功!${plain}\n"
        before_show_menu
        ;;
    2)
        rm -rf /etc/fail2ban
        systemctl stop fail2ban
        case "${release}" in
        ubuntu | debian | armbian)
            apt-get remove -y fail2ban
            apt-get purge -y fail2ban -y
            apt-get autoremove -y
            ;;
        centos | rhel | almalinux | rocky | ol)
            yum remove fail2ban -y
            yum autoremove -y
            ;;
        fedora | amzn | virtuozzo)
            dnf remove fail2ban -y
            dnf autoremove -y
            ;;
        arch | manjaro | parch)
            pacman -Rns --noconfirm fail2ban
            ;;
        *)
            echo -e "${red}不支持的操作系统。请手动卸载 Fail2ban。${plain}\n"
            exit 1
            ;;
        esac
        echo -e "${green}Fail2ban 和 IP 限制移除成功!${plain}\n"
        before_show_menu
        ;;
    0)
        show_menu
        ;;
    *)
        echo -e "${red}Invalid option. Please select a valid number.${plain}\n"
        remove_iplimit
        ;;
    esac
}

show_banlog() {
    local system_log="/var/log/fail2ban.log"

    echo -e "${green}正在检查封禁日志...${plain}\n"

    if ! systemctl is-active --quiet fail2ban; then
        echo -e "${red}Fail2ban 服务未运行!${plain}\n"
        return 1
    fi

    if [[ -f "$system_log" ]]; then
        echo -e "${green}来自 fail2ban.log 的最近系统封禁活动:${plain}"
        grep "3x-ipl" "$system_log" | grep -E "Ban|Unban" | tail -n 10 || echo -e "${yellow}未找到最近的系统封禁活动${plain}"
        echo ""
    fi

    if [[ -f "${iplimit_banned_log_path}" ]]; then
        echo -e "${green}3X-IPL 封禁日志条目:${plain}"
        if [[ -s "${iplimit_banned_log_path}" ]]; then
            grep -v "INIT" "${iplimit_banned_log_path}" | tail -n 10 || echo -e "${yellow}未找到封禁条目${plain}"
        else
            echo -e "${yellow}封禁日志文件为空${plain}"
        fi
    else
        echo -e "${red}未找到封禁日志文件: ${iplimit_banned_log_path}${plain}"
    fi

    echo -e "\n${green}当前监狱状态:${plain}"
    fail2ban-client status 3x-ipl || echo -e "${yellow}无法获取监狱状态${plain}"
}

create_iplimit_jails() {
    # Use default bantime if not passed => 30 minutes
    local bantime="${1:-30}"

    # Uncomment 'allowipv6 = auto' in fail2ban.conf
    sed -i 's/#allowipv6 = auto/allowipv6 = auto/g' /etc/fail2ban/fail2ban.conf

    # On Debian 12+ fail2ban's default backend should be changed to systemd
    if [[  "${release}" == "debian" && ${os_version} -ge 12 ]]; then
        sed -i '0,/action =/s/backend = auto/backend = systemd/' /etc/fail2ban/jail.conf
    fi

    cat << EOF > /etc/fail2ban/jail.d/3x-ipl.conf
[3x-ipl]
enabled=true
backend=auto
filter=3x-ipl
action=3x-ipl
logpath=${iplimit_log_path}
maxretry=2
findtime=32
bantime=${bantime}m
EOF

    cat << EOF > /etc/fail2ban/filter.d/3x-ipl.conf
[Definition]
datepattern = ^%%Y/%%m/%%d %%H:%%M:%%S
failregex   = \[LIMIT_IP\]\s*Email\s*=\s*<F-USER>.+</F-USER>\s*\|\|\s*SRC\s*=\s*<ADDR>
ignoreregex =
EOF

    cat << EOF > /etc/fail2ban/action.d/3x-ipl.conf
[INCLUDES]
before = iptables-allports.conf

[Definition]
actionstart = <iptables> -N f2b-<name>
              <iptables> -A f2b-<name> -j <returntype>
              <iptables> -I <chain> -p <protocol> -j f2b-<name>

actionstop = <iptables> -D <chain> -p <protocol> -j f2b-<name>
             <actionflush>
             <iptables> -X f2b-<name>

actioncheck = <iptables> -n -L <chain> | grep -q 'f2b-<name>[ \t]'

actionban = <iptables> -I f2b-<name> 1 -s <ip> -j <blocktype>
            echo "\$(date +"%%Y/%%m/%%d %%H:%%M:%%S")   BAN   [Email] = <F-USER> [IP] = <ip> banned for <bantime> seconds." >> ${iplimit_banned_log_path}

actionunban = <iptables> -D f2b-<name> -s <ip> -j <blocktype>
              echo "\$(date +"%%Y/%%m/%%d %%H:%%M:%%S")   UNBAN   [Email] = <F-USER> [IP] = <ip> unbanned." >> ${iplimit_banned_log_path}

[Init]
name = default
protocol = tcp
chain = INPUT
EOF

    echo -e "${green}IP限制监狱文件已创建，封禁时间为 ${bantime} 分钟。${plain}"
}

iplimit_remove_conflicts() {
    local jail_files=(
        /etc/fail2ban/jail.conf
        /etc/fail2ban/jail.local
    )

    for file in "${jail_files[@]}"; do
        # Check for [3x-ipl] config in jail file then remove it
        if test -f "${file}" && grep -qw '3x-ipl' ${file}; then
            sed -i "/\[3x-ipl\]/,/^$/d" ${file}
            echo -e "${yellow}正在移除监狱文件 (${file}) 中的 [3x-ipl] 冲突！${plain}\n"
        fi
    done
}

SSH_port_forwarding() {
    local URL_lists=(
        "https://api4.ipify.org"
		"https://ipv4.icanhazip.com"
		"https://v4.api.ipinfo.io/ip"
		"https://ipv4.myexternalip.com/raw"
		"https://4.ident.me"
		"https://check-host.net/ip"
    )
    local server_ip=""
    for ip_address in "${URL_lists[@]}"; do
        server_ip=$(curl -s --max-time 3 "${ip_address}" 2>/dev/null | tr -d '[:space:]')
        if [[ -n "${server_ip}" ]]; then
            break
        fi
    done
    local existing_webBasePath=$(/usr/local/x-ui/x-ui setting -show true | grep -Eo 'webBasePath: .+' | awk '{print $2}')
    local existing_port=$(/usr/local/x-ui/x-ui setting -show true | grep -Eo 'port: .+' | awk '{print $2}')
    local existing_listenIP=$(/usr/local/x-ui/x-ui setting -getListen true | grep -Eo 'listenIP: .+' | awk '{print $2}')
    local existing_cert=$(/usr/local/x-ui/x-ui setting -getCert true | grep -Eo 'cert: .+' | awk '{print $2}')
    local existing_key=$(/usr/local/x-ui/x-ui setting -getCert true | grep -Eo 'key: .+' | awk '{print $2}')

    local config_listenIP=""
    local listen_choice=""

    if [[ -n "$existing_cert" && -n "$existing_key" ]]; then
        echo -e "${green}面板已通过SSL保护。${plain}"
        before_show_menu
    fi
    if [[ -z "$existing_cert" && -z "$existing_key" && (-z "$existing_listenIP" || "$existing_listenIP" == "0.0.0.0") ]]; then
        echo -e "\n${red}警告：未找到证书和密钥！面板不安全。${plain}"
        echo "请获取证书或设置SSH端口转发。"
    fi

    if [[ -n "$existing_listenIP" && "$existing_listenIP" != "0.0.0.0" && (-z "$existing_cert" && -z "$existing_key") ]]; then
        echo -e "\n${green}当前SSH端口转发配置：${plain}"
        echo -e "标准SSH命令："
        echo -e "${yellow}ssh -L 2222:${existing_listenIP}:${existing_port} root@${server_ip}${plain}"
        echo -e "\n如果使用SSH密钥："
        echo -e "${yellow}ssh -i <sshkeypath> -L 2222:${existing_listenIP}:${existing_port} root@${server_ip}${plain}"
        echo -e "\n连接后，在以下地址访问面板："
        echo -e "${yellow}http://localhost:2222${existing_webBasePath}${plain}"
    fi

    echo -e "\n选择一个选项:"
    echo -e "${green}1.${plain} 设置监听IP"
    echo -e "${green}2.${plain} 清除监听IP"
    echo -e "${green}0.${plain} 返回主菜单"
    read -rp "选择一个选项: " num

    case "$num" in
    1)
        if [[ -z "$existing_listenIP" || "$existing_listenIP" == "0.0.0.0" ]]; then
            echo -e "\n未配置监听IP。选择一个选项:"
            echo -e "1. 使用默认IP (127.0.0.1)"
            echo -e "2. 设置自定义IP"
            read -rp "选择一个选项 (1 或 2): " listen_choice

            config_listenIP="127.0.0.1"
            [[ "$listen_choice" == "2" ]] && read -rp "输入要监听的自定义IP: " config_listenIP

            /usr/local/x-ui/x-ui setting -listenIP "${config_listenIP}" >/dev/null 2>&1
            echo -e "${green}监听IP已设置为 ${config_listenIP}.${plain}"
            echo -e "\n${green}SSH端口转发配置:${plain}"
            echo -e "标准SSH命令:"
            echo -e "${yellow}ssh -L 2222:${config_listenIP}:${existing_port} root@${server_ip}${plain}"
            echo -e "\n如果使用SSH密钥:"
            echo -e "${yellow}ssh -i <sshkeypath> -L 2222:${config_listenIP}:${existing_port} root@${server_ip}${plain}"
            echo -e "\n连接后，在以下地址访问面板:"
            echo -e "${yellow}http://localhost:2222${existing_webBasePath}${plain}"
            restart
        else
            config_listenIP="${existing_listenIP}"
            echo -e "${green}当前监听IP已设置为 ${config_listenIP}.${plain}"
        fi
        ;;
    2)
        /usr/local/x-ui/x-ui setting -listenIP 0.0.0.0 >/dev/null 2>&1
        echo -e "${green}监听IP已清除.${plain}"
        restart
        ;;
    0)
        show_menu
        ;;
    *)
        echo -e "${red}无效选项。请选择有效数字.${plain}\n"
        SSH_port_forwarding
        ;;
    esac
}

show_usage() {
    echo -e "┌───────────────────────────────────────────────────────┐
│  ${blue}x-ui 控制菜单用法 (子命令):${plain}                          │
│                                                       │
│  ${blue}x-ui${plain}              - 管理脚本                        │
│  ${blue}x-ui start${plain}        - 启动                            │
│  ${blue}x-ui stop${plain}         - 停止                            │
│  ${blue}x-ui restart${plain}      - 重启                            │
│  ${blue}x-ui status${plain}       - 当前状态                        │
│  ${blue}x-ui settings${plain}     - 当前设置                        │
│  ${blue}x-ui enable${plain}       - 启用开机自启                    │
│  ${blue}x-ui disable${plain}      - 禁用开机自启                    │
│  ${blue}x-ui log${plain}          - 查看日志                        │
│  ${blue}x-ui banlog${plain}       - 查看Fail2ban封禁日志            │
│  ${blue}x-ui update${plain}       - 更新                            │
│  ${blue}x-ui legacy${plain}       - 旧版本                          │
│  ${blue}x-ui install${plain}      - 安装                            │
│  ${blue}x-ui uninstall${plain}    - 卸载                            │
└───────────────────────────────────────────────────────┘"
}

show_menu() {
    echo -e "
╔────────────────────────────────────────────────╗
│   ${green}3X-UI 面板管理脚本${plain}                        │
│   ${green}0.${plain} 退出脚本                                  │
│────────────────────────────────────────────────│
│   ${green}1.${plain} 安装                                      │
│   ${green}2.${plain} 更新                                      │
│   ${green}3.${plain} 更新菜单                                  │
│   ${green}4.${plain} 旧版本                                    │
│   ${green}5.${plain} 卸载                                      │
│────────────────────────────────────────────────│
│   ${green}6.${plain} 重置用户名和密码                          │
│   ${green}7.${plain} 重置网页基础路径                          │
│   ${green}8.${plain} 重置设置                                  │
│   ${green}9.${plain} 更改端口                                  │
│  ${green}10.${plain} 查看当前设置                              │
│────────────────────────────────────────────────│
│  ${green}11.${plain} 启动                                      │
│  ${green}12.${plain} 停止                                      │
│  ${green}13.${plain} 重启                                      │
│  ${green}14.${plain} 检查状态                                  │
│  ${green}15.${plain} 日志管理                                  │
│────────────────────────────────────────────────│
│  ${green}16.${plain} 启用自启                                  │
│  ${green}17.${plain} 禁用自启                                  │
│────────────────────────────────────────────────│
│  ${green}18.${plain} SSL证书管理                               │
│  ${green}19.${plain} Cloudflare SSL证书                        │
│  ${green}20.${plain} IP限制管理                                │
│  ${green}21.${plain} 防火墙管理                                │
│  ${green}22.${plain} SSH端口转发管理                           │
│────────────────────────────────────────────────│
│  ${green}23.${plain} 启用BBR                                   │
│  ${green}24.${plain} 更新Geo文件                               │
│  ${green}25.${plain} Ookla测速                                 │
╚────────────────────────────────────────────────╝
"
    show_status
    echo && read -rp "请输入您的选择 [0-25]: " num

    case "${num}" in
    0)
        exit 0
        ;;
    1)
        check_uninstall && install
        ;;
    2)
        check_install && update
        ;;
    3)
        check_install && update_menu
        ;;
    4)
        check_install && legacy_version
        ;;
    5)
        check_install && uninstall
        ;;
    6)
        check_install && reset_user
        ;;
    7)
        check_install && reset_webbasepath
        ;;
    8)
        check_install && reset_config
        ;;
    9)
        check_install && set_port
        ;;
    10)
        check_install && check_config
        ;;
    11)
        check_install && start
        ;;
    12)
        check_install && stop
        ;;
    13)
        check_install && restart
        ;;
    14)
        check_install && status
        ;;
    15)
        check_install && show_log
        ;;
    16)
        check_install && enable
        ;;
    17)
        check_install && disable
        ;;
    18)
        ssl_cert_issue_main
        ;;
    19)
        ssl_cert_issue_CF
        ;;
    20)
        iplimit_main
        ;;
    21)
        firewall_menu
        ;;
    22)
        SSH_port_forwarding
        ;;
    23)
        bbr_menu
        ;;
    24)
        update_geo
        ;;
    25)
        run_speedtest
        ;;
    *)
        LOGE "请输入正确的数字 [0-25]"
        ;;
    esac
}

if [[ $# > 0 ]]; then
    case $1 in
    "start")
        check_install 0 && start 0
        ;;
    "stop")
        check_install 0 && stop 0
        ;;
    "restart")
        check_install 0 && restart 0
        ;;
    "status")
        check_install 0 && status 0
        ;;
    "settings")
        check_install 0 && check_config 0
        ;;
    "enable")
        check_install 0 && enable 0
        ;;
    "disable")
        check_install 0 && disable 0
        ;;
    "log")
        check_install 0 && show_log 0
        ;;
    "banlog")
        check_install 0 && show_banlog 0
        ;;
    "update")
        check_install 0 && update 0
        ;;
    "legacy")
        check_install 0 && legacy_version 0
        ;;
    "install")
        check_uninstall 0 && install 0
        ;;
    "uninstall")
        check_install 0 && uninstall 0
        ;;
    *) show_usage ;;
    esac
else
    show_menu
fi