feat(cli): add -v debug flags to trace file writes and env path creations during deployment

.github/workflows/release.yml

@@ -1,10 +1,9 @@
-name: Release
+name: Release
 
 on:
   push:
     tags:
-      - 'v*' # 当推送标签形如 v1.0.0 时触发自动构建
+      - 'v*' # 褰撴帹閫佹爣绛惧舰濡?v1.0.0 鏃惰Е鍙戣嚜鍔ㄦ瀯寤?
-
 permissions:
   contents: write
 
@@ -31,16 +30,16 @@ jobs:
           mkdir -p build_output
           
           echo "Building Windows amd64..."
-          GOOS=windows GOARCH=amd64 go build -ldflags="-s -w" -o build_output/smart-shutdown_windows_amd64.exe ./cmd/smart-shutdown
+          GOOS=windows GOARCH=amd64 go build -ldflags="-X 'main.AppVersion=${{ github.ref_name }}' -s -w" -o build_output/smart-shutdown_windows_amd64.exe ./cmd/smart-shutdown
           
           echo "Building Windows arm64..."
-          GOOS=windows GOARCH=arm64 go build -ldflags="-s -w" -o build_output/smart-shutdown_windows_arm64.exe ./cmd/smart-shutdown
+          GOOS=windows GOARCH=arm64 go build -ldflags="-X 'main.AppVersion=${{ github.ref_name }}' -s -w" -o build_output/smart-shutdown_windows_arm64.exe ./cmd/smart-shutdown
           
           echo "Building Linux amd64..."
-          GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" -o build_output/smart-shutdown_linux_amd64 ./cmd/smart-shutdown
+          GOOS=linux GOARCH=amd64 go build -ldflags="-X 'main.AppVersion=${{ github.ref_name }}' -s -w" -o build_output/smart-shutdown_linux_amd64 ./cmd/smart-shutdown
           
           echo "Building Linux arm64..."
-          GOOS=linux GOARCH=arm64 go build -ldflags="-s -w" -o build_output/smart-shutdown_linux_arm64 ./cmd/smart-shutdown
+          GOOS=linux GOARCH=arm64 go build -ldflags="-X 'main.AppVersion=${{ github.ref_name }}' -s -w" -o build_output/smart-shutdown_linux_arm64 ./cmd/smart-shutdown
 
       - name: Publish GitHub Release
         uses: softprops/action-gh-release@v1
@@ -51,3 +50,4 @@ jobs:
           generate_release_notes: true
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+

.gitignore

@@ -11,8 +11,8 @@
 # Output directory for cross-platform builds
 /bin/
 /build/
-smart-shutdown
+/smart-shutdown
-smart-shutdown.exe
+/smart-shutdown.exe
 
 # Output of the go coverage tool
 *.out

cmd/smart-shutdown/main.go

@@ -0,0 +1,349 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"runtime"
+	"strings"
+
+	"github.com/kardianos/service"
+	"github.com/spf13/cobra"
+	"smart-shutdown/pkg/config"
+	"smart-shutdown/pkg/daemon"
+	"smart-shutdown/pkg/logger"
+	"smart-shutdown/pkg/updater"
+)
+
+var AppVersion = "dev"
+var verbose bool
+
+func main() {
+	if err := logger.InitLogger(); err != nil {
+		fmt.Printf("无法初始化日志系统: %v\n", err)
+		os.Exit(1)
+	}
+
+	cfg, err := config.LoadConfig()
+	if err != nil {
+		logger.Crit("读取配置文件失败: %v", err)
+		os.Exit(1)
+	}
+
+	svc, err := daemon.GetService(cfg)
+	if err != nil {
+		logger.Crit("构建后台服务实例失败: %v", err)
+		os.Exit(1)
+	}
+
+	var showVersion bool
+
+	var rootCommand = &cobra.Command{
+		Use:   "smart-shutdown",
+		Short: "智能网络状态检测与自动关机后台服务",
+		PersistentPreRun: func(cmd *cobra.Command, args []string) {
+			if verbose {
+				logger.EnableDebug()
+			}
+		},
+		Run: func(cmd *cobra.Command, args []string) {
+			if showVersion {
+				fmt.Printf("========== Smart Network Shutdown Monitor ==========\n")
+				fmt.Printf("执行架构体基准: %s/%s\n", runtime.GOOS, runtime.GOARCH)
+				updater.CheckAndPrintUpdate(AppVersion)
+				return
+			}
+
+			err := svc.Run()
+			if err != nil {
+				logger.Fail("后台监控流崩溃: %v", err)
+			}
+		},
+	}
+
+	rootCommand.CompletionOptions.DisableDefaultCmd = true
+	rootCommand.Flags().BoolVarP(&showVersion, "version", "V", false, "输出当前二进制内核版本并联网拉取发布树状态")
+	rootCommand.PersistentFlags().BoolVarP(&verbose, "verbose", "v", false, "打印底层部署及环境追溯 Debug 信息")
+
+	cmds := []*cobra.Command{
+		{
+			Use:   "install",
+			Short: "将执行文件拷贝至系统目录并全局注入环境变量体系",
+			Run: func(cmd *cobra.Command, args []string) {
+				targetDir, targetExe := getTargetSystemPath()
+				currentExe, _ := os.Executable()
+
+				if !strings.EqualFold(filepath.Clean(currentExe), filepath.Clean(targetExe)) {
+					logger.Debug("检测到跨域部署: 待本体克隆存放底层根目录: %s", targetExe)
+					if err := os.MkdirAll(targetDir, 0755); err != nil {
+						logger.Fail("创建系统目录核心区路径溃败 (请核查最高系统权限身份执行需求): %v", err)
+						return
+					}
+					if err := copyFile(currentExe, targetExe); err != nil {
+						logger.Fail("注入独立执行程序副本被拒: %v", err)
+						return
+					}
+					
+					if runtime.GOOS != "windows" {
+						os.Chmod(targetExe, 0755)
+					} else {
+						envSetupCmd := fmt.Sprintf(`$p=[Environment]::GetEnvironmentVariable("Path","Machine");if(-not($p -split ';' -contains "%s")){[Environment]::SetEnvironmentVariable("Path",$p+";%s","Machine")}`, targetDir, targetDir)
+						err := exec.Command("powershell", "-Command", envSetupCmd).Run()
+						if err != nil {
+							logger.Warn("改写操作系统的环境变量集合遭受阻拦: %v", err)
+						} else {
+							logger.Debug("成功挂载底层环境变量: Windows Machine Path 追加了 %s 指引。", targetDir)
+						}
+					}
+				}
+
+				targetSvc, err := daemon.GetService(cfg, targetExe)
+				if err != nil {
+					logger.Crit("获取安装节点子域结构体构建回执失败: %v", err)
+					return
+				}
+				handleServiceControl(targetSvc, "install")
+			},
+		},
+		{
+			Use:   "uninstall",
+			Short: "废除并移除在册的后台服务、扫除环境关联残留",
+			Run: func(cmd *cobra.Command, args []string) {
+				service.Control(svc, "stop")
+				handleServiceControl(svc, "uninstall")
+
+				targetDir, targetExe := getTargetSystemPath()
+				currentExe, _ := os.Executable()
+
+				if !strings.EqualFold(filepath.Clean(currentExe), filepath.Clean(targetExe)) {
+					if _, err := os.Stat(targetExe); err == nil {
+						logger.Debug("查明环境曾记录过全局部署逻辑，现已启动强力移除可执行源地址流: %s", targetExe)
+						os.Remove(targetExe)
+						
+						if runtime.GOOS == "windows" {
+							os.Remove(targetDir)
+							envClearCmd := fmt.Sprintf(`$p=[Environment]::GetEnvironmentVariable("Path","Machine");$np=($p -split ';' | Where-Object {$_ -ne "%s" -and $_ -ne ""}) -join ';';[Environment]::SetEnvironmentVariable("Path",$np,"Machine")`, targetDir)
+							exec.Command("powershell", "-Command", envClearCmd).Run()
+							logger.Debug("环境变量系统清理：Windows Global Path 中的指向挂载项业已剥除卸载完成。")
+						}
+					}
+				}
+			},
+		},
+		{
+			Use:   "update",
+			Short: "获取并免干预热部署在线的最新系统构建程序",
+			Run: func(cmd *cobra.Command, args []string) {
+				fmt.Printf("当前内核架构版本: %s\n正在向全向节点请求效验最新发版记录...\n", AppVersion)
+				hasNew, latestVer, dlURL := updater.CheckForUpdate(AppVersion)
+				if !hasNew {
+					fmt.Println("\n[核验完毕] 您当前的程序正处于主线分支顶点，无需任何更新动作。")
+					return
+				}
+
+				fmt.Printf("\n[匹配成功] 查收最新稳定版释出包裹: %s\n", latestVer)
+				fmt.Println("预备接管环境树并构建热更新映射管道...")
+
+				status, _ := svc.Status()
+				isRunningService := (status == service.StatusRunning)
+
+				if isRunningService {
+					fmt.Println("[生命周期管控] 已探明应用正交由系统守护树作为后台运行，正在为其下放休眠截停指派以退换抢驻的内核独占锁...")
+					service.Control(svc, "stop")
+				}
+
+				fmt.Println("[数据流传输] 正在拉取远端预编译二进制核心封包...")
+				if err := updater.DownloadAndReplace(dlURL); err != nil {
+					fmt.Printf("[中断] 内核代码层执行热重载遭挫回滚: %v\n", err)
+					if isRunningService {
+						service.Control(svc, "start")
+					}
+					return
+				}
+
+				fmt.Println("[实体部署] 核心节点原子级替换覆写完成，系统块检验通过！")
+
+				if isRunningService {
+					fmt.Println("[后端苏醒] 重新挂载启动系统最高级权限守护网络接驳中心...")
+					service.Control(svc, "start")
+					fmt.Println("============ 热更新无感流闭环执行彻底成功！ ============")
+				} else {
+					fmt.Println("============ 热更核心接替执行完毕！============\n(注: 您的当前终端并不作为真正的宿存执行体。\n如目前您另行开启了 CMD 窗格在死循环执行此包前台，请人工叉掉那个窗口使其重新载入新版本！)")
+				}
+			},
+		},
+		{
+			Use:   "start",
+			Short: "唤起执行守护后台",
+			Run: func(cmd *cobra.Command, args []string) {
+				handleServiceControl(svc, "start")
+			},
+		},
+		{
+			Use:   "stop",
+			Short: "停机系统守护状态流",
+			Run: func(cmd *cobra.Command, args []string) {
+				handleServiceControl(svc, "stop")
+			},
+		},
+		{
+			Use:   "restart",
+			Short: "阻断并复用重新起跳服务控制主程",
+			Run: func(cmd *cobra.Command, args []string) {
+				handleServiceControl(svc, "restart")
+			},
+		},
+		{
+			Use:   "status",
+			Short: "展示全向服务参数结构、后端存活性报告与探针汇集",
+			Run: func(cmd *cobra.Command, args []string) {
+				status, err := svc.Status()
+
+				fmt.Println("\n========== 运行状态 ==========")
+				if err != nil {
+					fmt.Printf("特权访问受抵 (查验核算需要系统特权根源准允): %v\n", err)
+				} else {
+					switch status {
+					case service.StatusRunning:
+						fmt.Println("全向系统基石服务: [运转值守中]")
+					case service.StatusStopped:
+						fmt.Println("全向系统基石服务: [已被静默挂起]")
+					default:
+						fmt.Println("全向系统基石服务: [尚未注册落位 / 孤儿状态]")
+					}
+				}
+
+				fmt.Println("\n========== 核心配置 ==========")
+				fmt.Printf("探测标的机器 IP   : %s\n", cfg.TargetIP)
+				fmt.Printf("脱网迟滞容忍 (秒) : %d\n", cfg.MonitorWindowSeconds)
+				fmt.Printf("临危核准倒计 (秒) : %d\n", cfg.ShutdownCountdown)
+				fmt.Printf("静默发包跳频 (秒) : %d\n", cfg.NormalPingInterval)
+
+				logFilePath := filepath.Join(config.GetLogDir(), "network_monitor.log")
+				if fi, fileErr := os.Stat(logFilePath); fileErr == nil {
+					fmt.Println("\n========== 日志系统 ==========")
+					fmt.Printf("硬盘归档落点: %s\n", logFilePath)
+					fmt.Printf("现时容量尺寸: %.2f KB\n", float64(fi.Size())/1024)
+				}
+
+				printLastLogLines(10)
+			},
+		},
+	}
+
+	var configCmd = &cobra.Command{
+		Use:   "config",
+		Short: "提供运行参数结构的修载校验准入系统",
+	}
+
+	var configSetCmd = &cobra.Command{
+		Use:   "set [键] [值]",
+		Short: "安全的对 JSON 属性执行改写封装验证 (如 config set TargetIP 192.168.3.1)",
+		Args:  cobra.ExactArgs(2),
+		Run: func(cmd *cobra.Command, args []string) {
+			key := args[0]
+			val := args[1]
+			err := config.UpdateConfig(key, val)
+			if err != nil {
+				fmt.Printf("基于硬编码的防呆数据验证发回抵拦截口指令: %v\n", err)
+			} else {
+				fmt.Printf("系统确认承接了新的设参: [%s] 指标结构被赋予了 [%s] 新制规格 \n(附留: 更易此配置文件必须人为发起 'smart-shutdown restart' 才能覆盖常驻内存的解析图谱。)\n", key, val)
+			}
+		},
+	}
+
+	configCmd.AddCommand(configSetCmd)
+	rootCommand.AddCommand(configCmd)
+
+	for _, c := range cmds {
+		rootCommand.AddCommand(c)
+	}
+
+	rootCommand.InitDefaultHelpCmd()
+	for _, cmd := range rootCommand.Commands() {
+		if cmd.Name() == "help" {
+			cmd.Short = "按需展示其它操作指令及其详情"
+		}
+	}
+
+	if err := rootCommand.Execute(); err != nil {
+		os.Exit(1)
+	}
+}
+
+func handleServiceControl(s service.Service, action string) {
+	err := service.Control(s, action)
+	if err != nil {
+		errStr := err.Error()
+		if strings.Contains(errStr, "Access is denied") || strings.Contains(errStr, "permission denied") || strings.Contains(errStr, "拒绝访问") {
+			logger.Fail("管控流程 [%s] 触发越级防卫！无核准身份特设记录。请开具含有全 Root 及高配权限窗格承接口径。", action)
+			return
+		}
+		logger.Crit("后台执行流程组块阻断报错 [%s] : %v", action, err)
+		return
+	}
+	logger.Succ("指令动作 [%s] 解析下发执行完毕，无阻断警告。", action)
+}
+
+func printLastLogLines(n int) {
+	logFilePath := filepath.Join(config.GetLogDir(), "network_monitor.log")
+	file, err := os.Open(logFilePath)
+	if err != nil {
+		fmt.Printf("\n(排障辅录: 获取探针断联记录池为空，全空栈态)\n")
+		return
+	}
+	defer file.Close()
+
+	data, err := io.ReadAll(file)
+	if err != nil {
+		return
+	}
+	lines := strings.Split(string(data), "\n")
+
+	validLines := make([]string, 0, len(lines))
+	for _, l := range lines {
+		if strings.TrimSpace(l) != "" {
+			validLines = append(validLines, l)
+		}
+	}
+
+	start := len(validLines) - n
+	if start < 0 {
+		start = 0
+	}
+
+	fmt.Printf("\n========== 最新沿线抓取探测轨迹尾部排 %d 行 ==========\n", n)
+	for i := start; i < len(validLines); i++ {
+		fmt.Println(validLines[i])
+	}
+}
+
+func getTargetSystemPath() (dir string, exe string) {
+	if runtime.GOOS == "windows" {
+		dir = filepath.Join(os.Getenv("ProgramFiles"), "SmartShutdown")
+		exe = filepath.Join(dir, "smart-shutdown.exe")
+	} else {
+		dir = "/usr/local/bin"
+		exe = filepath.Join(dir, "smart-shutdown")
+	}
+	return dir, exe
+}
+
+func copyFile(src, dst string) error {
+	in, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer in.Close()
+
+	out, err := os.Create(dst)
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+
+	_, err = io.Copy(out, in)
+	return err
+}

go.mod

@@ -7,6 +7,7 @@ require (
 	github.com/kardianos/service v1.2.4
 	github.com/prometheus-community/pro-bing v0.8.0
 	github.com/spf13/cobra v1.10.2
+	golang.org/x/mod v0.34.0
 	gopkg.in/natefinch/lumberjack.v2 v2.2.1
 )
 

go.sum

@@ -19,6 +19,8 @@ github.com/spf13/cobra v1.10.2/go.mod h1:7C1pvHqHw5A4vrJfjNwvOdzYu0Gml16OCs2GRiT
 github.com/spf13/pflag v1.0.9 h1:9exaQaMOCwffKiiiYk6/BndUBv+iRViNW+4lEMi0PvY=
 github.com/spf13/pflag v1.0.9/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 go.yaml.in/yaml/v3 v3.0.4/go.mod h1:DhzuOOF2ATzADvBadXxruRBLzYTpT36CKvDb3+aBEFg=
+golang.org/x/mod v0.34.0 h1:xIHgNUUnW6sYkcM5Jleh05DvLOtwc6RitGHbDk4akRI=
+golang.org/x/mod v0.34.0/go.mod h1:ykgH52iCZe79kzLLMhyCUzhMci+nQj+0XkbXpNYtVjY=
 golang.org/x/net v0.49.0 h1:eeHFmOGUTtaaPSGNmjBKpbng9MulQsJURQUAfUwY++o=
 golang.org/x/net v0.49.0/go.mod h1:/ysNB2EvaqvesRkuLAyjI1ycPZlQHM3q01F02UY/MV8=
 golang.org/x/sync v0.19.0 h1:vV+1eWNmZ5geRlYjzm2adRgW2/mcpevXNg50YZtPCE4=

pkg/daemon/service.go

@@ -3,11 +3,10 @@ package daemon
 import (
 	"context"
 
+	"github.com/kardianos/service"
 	"smart-shutdown/pkg/config"
 	"smart-shutdown/pkg/logger"
 	"smart-shutdown/pkg/monitor"
-
-	"github.com/kardianos/service"
 )
 
 type program struct {
@@ -41,13 +40,17 @@ func (p *program) Stop(s service.Service) error {
 	return nil
 }
 
-func GetService(cfg *config.Config) (service.Service, error) {
+func GetService(cfg *config.Config, execPath ...string) (service.Service, error) {
 	svcConfig := &service.Config{
 		Name:        "SmartNetworkMonitor",
 		DisplayName: "Smart Network Shutdown Monitor",
 		Description: "A reliable daemon that periodically monitors network states and triggers node suspension logically.",
 	}
 
+	if len(execPath) > 0 && execPath[0] != "" {
+		svcConfig.Executable = execPath[0]
+	}
+
 	prg := &program{
 		cfg: cfg,
 	}

pkg/logger/logger.go

@@ -12,6 +12,7 @@ import (
 )
 
 var fileLogger *lumberjack.Logger
+var debugEnabled bool
 
 func InitLogger() error {
 	logDir := config.GetLogDir()
@@ -33,6 +34,10 @@ func InitLogger() error {
 	return nil
 }
 
+func EnableDebug() {
+	debugEnabled = true
+}
+
 func writeLog(level, plainPrefix, format string, v ...interface{}) {
 	msg := fmt.Sprintf(format, v...)
 	timestamp := time.Now().Format("2006/01/02 15:04:05")
@@ -63,11 +68,19 @@ func getPrefixColor(level string) func(a ...interface{}) string {
 		return color.New(color.FgRed).SprintFunc()
 	case "CRITICAL":
 		return color.New(color.FgHiRed).SprintFunc()
+	case "DEBUG":
+		return color.New(color.FgCyan).SprintFunc()
 	default:
 		return color.New(color.Reset).SprintFunc()
 	}
 }
 
+func Debug(format string, v ...interface{}) {
+	if debugEnabled {
+		writeLog("DEBUG", "[DEBUG]", format, v...)
+	}
+}
+
 func Info(format string, v ...interface{}) {
 	writeLog("INFO", "[INFO]", format, v...)
 }

pkg/updater/updater.go

@@ -0,0 +1,146 @@
+package updater
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"time"
+
+	"golang.org/x/mod/semver"
+)
+
+type githubRelease struct {
+	TagName string `json:"tag_name"`
+	Assets  []struct {
+		Name               string `json:"name"`
+		BrowserDownloadURL string `json:"browser_download_url"`
+	} `json:"assets"`
+}
+
+func CheckForUpdate(currentVersion string) (hasNew bool, latestVersion string, downloadURL string) {
+	if currentVersion == "dev" || currentVersion == "" {
+		return false, "", ""
+	}
+
+	client := http.Client{Timeout: 8 * time.Second}
+	resp, err := client.Get("https://api.github.com/repos/UnbalancedCat/smart-shutdown/releases/latest")
+	if err != nil || resp.StatusCode != 200 {
+		return false, "", ""
+	}
+	defer resp.Body.Close()
+
+	var release githubRelease
+	if err := json.NewDecoder(resp.Body).Decode(&release); err != nil {
+		return false, "", ""
+	}
+
+	latestVersion = release.TagName
+	cv := currentVersion
+	if !semver.IsValid(cv) && !strings.HasPrefix(cv, "v") {
+		cv = "v" + cv
+	}
+	lv := latestVersion
+	if !semver.IsValid(lv) && !strings.HasPrefix(lv, "v") {
+		lv = "v" + lv
+	}
+
+	if semver.Compare(cv, lv) < 0 {
+		expectedAsset := fmt.Sprintf("smart-shutdown_%s_%s", runtime.GOOS, runtime.GOARCH)
+		if runtime.GOOS == "windows" {
+			expectedAsset += ".exe"
+		}
+
+		for _, asset := range release.Assets {
+			if asset.Name == expectedAsset {
+				return true, latestVersion, asset.BrowserDownloadURL
+			}
+		}
+	}
+
+	return false, "", ""
+}
+
+func CheckAndPrintUpdate(currentVersion string) {
+	fmt.Printf("当前内核版本: %s\n", currentVersion)
+	fmt.Println("正在检测云端发布节点是否有可用新版本...")
+	hasNew, latest, _ := CheckForUpdate(currentVersion)
+	if hasNew {
+		fmt.Printf("\n[发现更新] 获取到最新稳定版本: %s\n", latest)
+		fmt.Println("请执行 'smart-shutdown update' 以全自动获取并覆盖部署该更新。")
+	} else {
+		fmt.Println("当前已是最新运行版本，暂无可用更新。")
+	}
+}
+
+func DownloadAndReplace(downloadURL string) error {
+	currentExe, err := os.Executable()
+	if err != nil {
+		return fmt.Errorf("无法溯源自身执行路径: %v", err)
+	}
+
+	tempExe := filepath.Join(os.TempDir(), "smart-shutdown-update.tmp")
+	out, err := os.Create(tempExe)
+	if err != nil {
+		return fmt.Errorf("系统缓存区句柄开辟失败: %v", err)
+	}
+
+	resp, err := http.Get(downloadURL)
+	if err != nil || resp.StatusCode != 200 {
+		out.Close()
+		os.Remove(tempExe)
+		return fmt.Errorf("网络传输流建立失败，节点远端可能受限")
+	}
+
+	_, err = io.Copy(out, resp.Body)
+	resp.Body.Close()
+	out.Close()
+
+	if err != nil {
+		os.Remove(tempExe)
+		return fmt.Errorf("物理覆盖字节流中断: %v", err)
+	}
+
+	if runtime.GOOS == "windows" {
+		oldExe := currentExe + ".old"
+		os.Remove(oldExe) 
+		if err := os.Rename(currentExe, oldExe); err != nil {
+			return fmt.Errorf("操作系统拒绝进程脱壳 (文件锁互斥): %v", err)
+		}
+	}
+
+	if err := copyFile(tempExe, currentExe); err != nil {
+		if runtime.GOOS == "windows" {
+			os.Rename(currentExe+".old", currentExe)
+		}
+		return fmt.Errorf("原子级覆盖执行核心挫败: %v", err)
+	}
+	os.Remove(tempExe)
+
+	if runtime.GOOS != "windows" {
+		os.Chmod(currentExe, 0755)
+	}
+
+	return nil
+}
+
+func copyFile(src, dst string) error {
+	in, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer in.Close()
+
+	out, err := os.Create(dst)
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+
+	_, err = io.Copy(out, in)
+	return err
+}