generated from zj/archlinux-pkg
508 lines
16 KiB
Bash
508 lines
16 KiB
Bash
#!/bin/bash
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#
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# Arch Linux NetworkManager 管理脚本 - 修复版
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# 功能: 检查网络、自动修复、可靠地备份和恢复配置
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#
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# --- 全局变量和配置 ---
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BACKUP_BASE_DIR="/var/lib/network-manager-script"
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LOG_FILE="/var/log/nm_manager.log"
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ACTIVE_CONNS_LIST="active_connections.list"
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CONNECTION_DETAILS_DIR="connection_details"
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# --- 颜色定义 ---
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C_RESET='\033[0m'
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C_RED='\033[0;31m'
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C_GREEN='\033[0;32m'
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C_YELLOW='\033[0;33m'
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C_BLUE='\033[0;34m'
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# --- 基础函数 ---
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log() { echo -e "$(date '+%Y-%m-%d %H:%M:%S') - $1" | tee -a "$LOG_FILE"; }
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log_success() { log "${C_GREEN}✓ $1${C_RESET}"; }
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log_error() { log "${C_RED}✗ $1${C_RESET}"; }
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log_warn() { log "${C_YELLOW}⚠ $1${C_RESET}"; }
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info() { echo -e "${C_BLUE} $1${C_RESET}"; }
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# 检查root权限和NetworkManager服务
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pre_check() {
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if [ "$(id -u)" -ne 0 ]; then
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log_error "此脚本需要root权限运行。请使用: sudo \$0"
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exit 1
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fi
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if ! systemctl is-active --quiet NetworkManager; then
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log_error "NetworkManager 服务未运行。请先启动: sudo systemctl start NetworkManager"
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exit 1
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fi
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}
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# --- 核心功能 ---
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# 1. 检查当前网络状态
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check_status() {
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info "--- 当前网络状态 ---"
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nmcli device status
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info "\n--- 活动连接 ---"
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nmcli connection show --active
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log "正在检查外网连接..."
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if ping -c 2 -W 3 8.8.8.8 >/dev/null 2>&1 || ping -c 2 -W 3 1.1.1.1 >/dev/null 2>&1; then
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log_success "外网连接正常。"
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return 0
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else
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log_error "外网连接失败。"
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return 1
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fi
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}
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# 2. 改进的备份网络配置
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backup_config() {
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local backup_dir="$BACKUP_BASE_DIR/$(date +%F_%H-%M-%S)"
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mkdir -p "$backup_dir"
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mkdir -p "$backup_dir/$CONNECTION_DETAILS_DIR"
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log "开始备份网络配置到: $backup_dir"
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# 记录当前活动的连接
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nmcli -t -f NAME,TYPE,UUID,DEVICE connection show --active | grep -v ':loopback:' > "$backup_dir/$ACTIVE_CONNS_LIST"
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# 备份所有非回环连接的详细配置
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local backup_count=0
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while IFS=: read -r conn_name conn_type conn_uuid conn_device; do
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if [ -n "$conn_name" ] && [ "$conn_type" != "loopback" ]; then
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local safe_name=$(echo "$conn_name" | tr ' /' '_-')
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local detail_file="$backup_dir/$CONNECTION_DETAILS_DIR/${safe_name}_${conn_uuid}.conf"
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# 导出连接的完整配置
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if nmcli -f all connection show "$conn_uuid" > "$detail_file" 2>/dev/null; then
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info "已备份连接: $conn_name (UUID: $conn_uuid)"
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((backup_count++))
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# 尝试导出为keyfile格式（如果支持）
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local keyfile="$backup_dir/$CONNECTION_DETAILS_DIR/${safe_name}_${conn_uuid}.keyfile"
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nmcli connection export "$conn_uuid" "$keyfile" 2>/dev/null || true
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else
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log_warn "备份连接 '$conn_name' 失败"
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fi
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fi
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done < <(nmcli -t -f NAME,TYPE,UUID,DEVICE connection show | grep -v ':loopback:')
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# 备份网络设备信息
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nmcli device status > "$backup_dir/device_status.txt"
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ip addr show > "$backup_dir/ip_addresses.txt"
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ip route show > "$backup_dir/routes.txt"
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# 尝试备份系统连接文件（如果存在）
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local system_conn_dir="/etc/NetworkManager/system-connections"
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if [ -d "$system_conn_dir" ] && [ "$(ls -A "$system_conn_dir" 2>/dev/null)" ]; then
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local sys_backup_dir="$backup_dir/system-connections"
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mkdir -p "$sys_backup_dir"
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cp -r "$system_conn_dir"/* "$sys_backup_dir/" 2>/dev/null
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info "已备份系统连接文件"
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fi
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if [ "$backup_count" -gt 0 ]; then
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# 创建符号链接指向最新备份
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ln -sfn "$backup_dir" "$BACKUP_BASE_DIR/latest"
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log_success "备份完成！共备份 $backup_count 个连接配置。"
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# 显示备份摘要
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info "备份摘要:"
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info "- 活动连接: $(wc -l < "$backup_dir/$ACTIVE_CONNS_LIST") 个"
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info "- 详细配置: $backup_count 个"
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info "- 备份位置: $backup_dir"
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else
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log_warn "未找到任何可备份的连接。"
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rm -rf "$backup_dir"
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return 1
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fi
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}
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# 3. 自动修复网络
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auto_fix() {
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log "启动网络自动修复流程..."
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if check_status; then
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log_success "网络已连接，无需修复。"
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return
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fi
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log_warn "网络连接中断，将尝试自动修复。"
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# 修复前先执行备份
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backup_config
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log "正在尝试为所有物理网卡设置临时DHCP连接..."
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# 获取所有物理网卡
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while IFS=: read -r device device_type state connection; do
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if [ "$device_type" = "ethernet" ] || [ "$device_type" = "wifi" ]; then
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if [ -n "$device" ] && [ "$device" != "lo" ]; then
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local temp_conn_name="temp-dhcp-$device"
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log "处理设备: $device (类型: $device_type, 状态: $state)"
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# 先停用设备上的所有现有连接
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nmcli device disconnect "$device" 2>/dev/null
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# 删除可能存在的旧临时连接
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nmcli connection delete "$temp_conn_name" 2>/dev/null
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# 根据设备类型创建连接
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local conn_type="ethernet"
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if [ "$device_type" = "wifi" ]; then
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conn_type="wifi"
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fi
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# 添加并激活新的临时DHCP连接
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if nmcli connection add type "$conn_type" ifname "$device" con-name "$temp_conn_name" autoconnect yes ipv4.method auto ipv6.method auto >/dev/null 2>&1; then
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info "为 $device 创建了临时DHCP连接 '$temp_conn_name'"
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# 激活连接
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if nmcli connection up "$temp_conn_name" >/dev/null 2>&1; then
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info "成功激活连接 '$temp_conn_name'"
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else
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log_warn "激活连接 '$temp_conn_name' 失败"
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fi
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else
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log_error "为 $device 创建DHCP连接失败"
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fi
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fi
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fi
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done < <(nmcli -t -f DEVICE,TYPE,STATE,CONNECTION device status)
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log "等待网络重新初始化 (10秒)..."
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sleep 10
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log "再次检查网络状态..."
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check_status
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}
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# 4. 智能恢复网络配置
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restore_config() {
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local backup_dir="$BACKUP_BASE_DIR/latest"
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if [ ! -d "$backup_dir" ] || [ ! -L "$backup_dir" ]; then
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log_error "找不到备份目录。请先执行备份(选项2)或修复(选项3)操作。"
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return 1
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fi
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local real_backup_dir=$(readlink -f "$backup_dir")
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log "将从以下备份中恢复: $real_backup_dir"
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# 显示备份信息
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if [ -f "$real_backup_dir/$ACTIVE_CONNS_LIST" ]; then
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info "备份中的活动连接:"
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while IFS=: read -r name type uuid device; do
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info " - $name ($type) -> $device"
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done < "$real_backup_dir/$ACTIVE_CONNS_LIST"
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fi
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# 尝试从系统连接文件恢复
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local sys_backup_dir="$real_backup_dir/system-connections"
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if [ -d "$sys_backup_dir" ] && [ "$(ls -A "$sys_backup_dir" 2>/dev/null)" ]; then
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log "发现系统连接文件备份，尝试恢复..."
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restore_from_system_files "$sys_backup_dir"
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else
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log "未找到系统连接文件，尝试从详细配置恢复..."
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restore_from_details "$real_backup_dir"
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fi
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# 重新激活之前的连接
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log "正在重新激活之前的活动连接..."
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if [ -f "$real_backup_dir/$ACTIVE_CONNS_LIST" ]; then
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while IFS=: read -r conn_name conn_type conn_uuid conn_device; do
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if [ -n "$conn_name" ]; then
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info "尝试激活: $conn_name"
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if nmcli connection up "$conn_name" >/dev/null 2>&1; then
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info "✓ 成功激活: $conn_name"
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else
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log_warn "激活失败: $conn_name"
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fi
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fi
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done < "$real_backup_dir/$ACTIVE_CONNS_LIST"
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fi
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log "等待网络重新连接 (8秒)..."
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sleep 8
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log_success "恢复过程完成！"
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check_status
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}
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# 从系统文件恢复
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restore_from_system_files() {
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local sys_backup_dir="\$1"
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local system_conn_dir="/etc/NetworkManager/system-connections"
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# 停止NetworkManager
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log "临时停止NetworkManager服务..."
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systemctl stop NetworkManager
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# 备份当前配置
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local current_backup="/tmp/nm_current_backup_$(date +%s)"
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mkdir -p "$current_backup"
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if [ -d "$system_conn_dir" ]; then
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cp -r "$system_conn_dir"/* "$current_backup/" 2>/dev/null || true
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fi
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# 恢复配置文件
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mkdir -p "$system_conn_dir"
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cp -r "$sys_backup_dir"/* "$system_conn_dir/" 2>/dev/null
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chmod -R 600 "$system_conn_dir"/* 2>/dev/null
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# 重启NetworkManager
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log "重新启动NetworkManager服务..."
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systemctl start NetworkManager
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sleep 5
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nmcli connection reload
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sleep 3
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rm -rf "$current_backup"
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}
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# 从详细配置恢复（显示信息供手动配置）
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restore_from_details() {
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local backup_dir="\$1"
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local details_dir="$backup_dir/$CONNECTION_DETAILS_DIR"
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if [ ! -d "$details_dir" ]; then
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log_error "未找到详细配置备份"
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return 1
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fi
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log_warn "系统连接文件备份不可用，显示配置信息供参考："
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for detail_file in "$details_dir"/*.conf; do
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if [ -f "$detail_file" ]; then
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local filename=$(basename "$detail_file" .conf)
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info "连接配置: $filename"
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echo "----------------------------------------"
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# 提取关键配置信息
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grep -E "^(connection\.|ipv4\.|ipv6\.|802-3-ethernet\.|wifi\.)" "$detail_file" | head -20
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echo "----------------------------------------"
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fi
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done
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}
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# 5. 清理临时DHCP连接
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cleanup_temp_connections() {
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log "正在清理临时DHCP连接..."
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local cleanup_count=0
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while IFS= read -r conn_name; do
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if [ -n "$conn_name" ]; then
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if nmcli connection delete "$conn_name" >/dev/null 2>&1; then
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info "已删除临时连接: $conn_name"
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((cleanup_count++))
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fi
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fi
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done < <(nmcli -t -f NAME connection show | grep "^temp-dhcp-")
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if [ "$cleanup_count" -gt 0 ]; then
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log_success "清理完成，共删除 $cleanup_count 个临时连接。"
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else
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log "没有找到需要清理的临时连接。"
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fi
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}
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# 6. 显示备份信息
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show_backup_info() {
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info "--- 备份信息 ---"
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if [ ! -d "$BACKUP_BASE_DIR" ]; then
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log_warn "备份目录不存在: $BACKUP_BASE_DIR"
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return
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fi
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local backup_count=0
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for backup_dir in "$BACKUP_BASE_DIR"/20*; do
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if [ -d "$backup_dir" ]; then
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((backup_count++))
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local dir_name=$(basename "$backup_dir")
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local size=$(du -sh "$backup_dir" 2>/dev/null | cut -f1)
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info "备份 #$backup_count: $dir_name (大小: $size)"
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# 显示备份内容摘要
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if [ -f "$backup_dir/$ACTIVE_CONNS_LIST" ]; then
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local conn_count=$(wc -l < "$backup_dir/$ACTIVE_CONNS_LIST")
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info " - 活动连接: $conn_count 个"
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fi
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if [ -d "$backup_dir/$CONNECTION_DETAILS_DIR" ]; then
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local detail_count=$(ls -1 "$backup_dir/$CONNECTION_DETAILS_DIR"/*.conf 2>/dev/null | wc -l)
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info " - 详细配置: $detail_count 个"
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fi
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fi
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done
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if [ "$backup_count" -eq 0 ]; then
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log_warn "没有找到任何备份。"
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else
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info "总共找到 $backup_count 个备份。"
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# 显示最新备份信息
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if [ -L "$BACKUP_BASE_DIR/latest" ]; then
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local latest_backup=$(readlink -f "$BACKUP_BASE_DIR/latest")
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info "最新备份: $(basename "$latest_backup")"
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fi
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fi
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}
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# 7. 删除旧备份
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cleanup_old_backups() {
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local keep_days=7
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log "正在清理超过 $keep_days 天的旧备份..."
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if [ ! -d "$BACKUP_BASE_DIR" ]; then
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log_warn "备份目录不存在，无需清理。"
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return
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fi
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local deleted_count=0
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find "$BACKUP_BASE_DIR" -maxdepth 1 -type d -name "20*" -mtime +$keep_days | while read -r old_backup; do
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if [ -d "$old_backup" ]; then
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local backup_name=$(basename "$old_backup")
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rm -rf "$old_backup"
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info "已删除旧备份: $backup_name"
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((deleted_count++))
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fi
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done
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if [ "$deleted_count" -gt 0 ]; then
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log_success "清理完成，删除了 $deleted_count 个旧备份。"
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else
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log "没有找到需要清理的旧备份。"
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fi
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}
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# 8. 高级网络诊断
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advanced_diagnosis() {
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info "--- 高级网络诊断 ---"
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log "1. NetworkManager 服务状态:"
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systemctl status NetworkManager --no-pager -l
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log "\n2. 网络设备详细信息:"
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nmcli device show
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log "\n3. 所有连接配置:"
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nmcli connection show
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log "\n4. 路由表:"
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ip route show table all
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log "\n5. DNS 配置:"
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cat /etc/resolv.conf
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log "\n6. 防火墙状态:"
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if command -v ufw >/dev/null 2>&1; then
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ufw status verbose
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elif command -v iptables >/dev/null 2>&1; then
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iptables -L -n
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else
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info "未找到防火墙工具"
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fi
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log "\n7. 网络接口统计:"
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cat /proc/net/dev
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log "\n8. 系统网络配置文件:"
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info "NetworkManager 主配置:"
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[ -f /etc/NetworkManager/NetworkManager.conf ] && cat /etc/NetworkManager/NetworkManager.conf
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log "\n9. 最近的网络日志:"
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journalctl -u NetworkManager --no-pager -n 50
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}
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# --- 主菜单和程序入口 ---
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show_menu() {
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echo
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echo "=============================================="
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echo " Arch Linux NetworkManager 管理工具"
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echo "=============================================="
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echo "1. 检查网络状态"
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echo "2. 备份网络配置"
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echo "3. 自动修复网络"
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echo "4. 恢复网络配置"
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echo "5. 清理临时连接"
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echo "6. 显示备份信息"
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echo "7. 清理旧备份"
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echo "8. 高级网络诊断"
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echo "9. 退出"
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echo "=============================================="
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echo -n "请选择操作 (1-9): "
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}
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main() {
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# 初始化
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pre_check
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mkdir -p "$BACKUP_BASE_DIR"
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touch "$LOG_FILE"
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log_success "NetworkManager 管理脚本启动成功"
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while true; do
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show_menu
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read -r choice
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case $choice in
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1)
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echo
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log "执行选项 1: 检查网络状态"
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||
check_status
|
||
;;
|
||
2)
|
||
echo
|
||
log "执行选项 2: 备份网络配置"
|
||
backup_config
|
||
;;
|
||
3)
|
||
echo
|
||
log "执行选项 3: 自动修复网络"
|
||
auto_fix
|
||
;;
|
||
4)
|
||
echo
|
||
log "执行选项 4: 恢复网络配置"
|
||
restore_config
|
||
;;
|
||
5)
|
||
echo
|
||
log "执行选项 5: 清理临时连接"
|
||
cleanup_temp_connections
|
||
;;
|
||
6)
|
||
echo
|
||
log "执行选项 6: 显示备份信息"
|
||
show_backup_info
|
||
;;
|
||
7)
|
||
echo
|
||
log "执行选项 7: 清理旧备份"
|
||
cleanup_old_backups
|
||
;;
|
||
8)
|
||
echo
|
||
log "执行选项 8: 高级网络诊断"
|
||
advanced_diagnosis
|
||
;;
|
||
9)
|
||
echo
|
||
log_success "感谢使用 NetworkManager 管理工具！"
|
||
exit 0
|
||
;;
|
||
*)
|
||
echo
|
||
log_error "无效选择，请输入 1-9 之间的数字。"
|
||
;;
|
||
esac
|
||
|
||
echo
|
||
echo "按 Enter 键继续..."
|
||
read -r
|
||
done
|
||
}
|
||
|
||
# 脚本入口点
|
||
if [ "${BASH_SOURCE[0]}" = "${0}" ]; then
|
||
main "$@"
|
||
fi
|
||
|