在节点手动安装页显示节点安装文件下载链接

internal/web/actions/default/clusters/cluster/downloadInstaller.go

@@ -0,0 +1,70 @@
+// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved. Official site: https://goedge.cn .
+
+package cluster
+
+import (
+	"github.com/TeaOSLab/EdgeAdmin/internal/web/actions/actionutils"
+	"github.com/iwind/TeaGo/Tea"
+	"github.com/iwind/TeaGo/types"
+	"io"
+	"net/http"
+	"os"
+	"regexp"
+)
+
+type DownloadInstallerAction struct {
+	actionutils.ParentAction
+}
+
+func (this *DownloadInstallerAction) Init() {
+	this.Nav("", "", "")
+}
+
+func (this *DownloadInstallerAction) RunGet(params struct {
+	Name string
+}) {
+	if len(params.Name) == 0 {
+		this.ResponseWriter.WriteHeader(http.StatusNotFound)
+		this.WriteString("file not found")
+		return
+	}
+
+	// 检查文件名
+	// 以防止路径穿越等风险
+	if !regexp.MustCompile(`^[a-zA-Z0-9.-]+$`).MatchString(params.Name) {
+		this.ResponseWriter.WriteHeader(http.StatusNotFound)
+		this.WriteString("file not found")
+		return
+	}
+
+	var zipFile = Tea.Root + "/edge-api/deploy/" + params.Name
+	fp, err := os.OpenFile(zipFile, os.O_RDWR, 0444)
+	if err != nil {
+		if os.IsNotExist(err) {
+			this.ResponseWriter.WriteHeader(http.StatusNotFound)
+			this.WriteString("file not found")
+			return
+		}
+
+		this.ResponseWriter.WriteHeader(http.StatusInternalServerError)
+		this.WriteString("file can not be opened")
+
+		return
+	}
+
+	defer func() {
+		_ = fp.Close()
+	}()
+
+	stat, err := fp.Stat()
+	if err != nil {
+		this.ResponseWriter.WriteHeader(http.StatusInternalServerError)
+		this.WriteString("file can not be opened")
+		return
+	}
+
+	this.AddHeader("Content-Disposition", "attachment; filename=\""+params.Name+"\";")
+	this.AddHeader("Content-Type", "application/zip")
+	this.AddHeader("Content-Length", types.String(stat.Size()))
+	_, _ = io.Copy(this.ResponseWriter, fp)
+}