Feat: download temporary archive file

.gitignore

@@ -21,3 +21,4 @@ version.lock
 
 # Config file
 *.ini
+/conf/conf.ini

pkg/filesystem/file.go

@@ -26,10 +26,17 @@ func (r lrs) Read(p []byte) (int, error) {
 }
 
 // withSpeedLimit 给原有的ReadSeeker加上限速
-func withSpeedLimit(rs io.ReadSeeker, speed int) io.ReadSeeker {
+func (fs *FileSystem) withSpeedLimit(rs io.ReadSeeker) io.ReadSeeker {
+	// 如果用户组有速度限制，就返回限制流速的ReaderSeeker
+	if fs.User.Group.SpeedLimit != 0 {
+		speed := fs.User.Group.SpeedLimit
 		bucket := ratelimit.NewBucketWithRate(float64(speed), int64(speed))
 		lrs := lrs{rs, ratelimit.Reader(rs, bucket)}
 		return lrs
+	}
+	// 否则返回原始流
+	return rs
+
 }
 
 // AddFile 新增文件记录
@@ -54,6 +61,21 @@ func (fs *FileSystem) AddFile(ctx context.Context, parent *model.Folder) (*model
 	return &newFile, nil
 }
 
+// GetPhysicalFileContent 根据文件物理路径获取文件流
+func (fs *FileSystem) GetPhysicalFileContent(ctx context.Context, path string) (io.ReadSeeker, error) {
+	// 重设上传策略
+	fs.Policy = &model.Policy{Type: "local"}
+	_ = fs.dispatchHandler()
+
+	// 获取文件流
+	rs, err := fs.Handler.Get(ctx, path)
+	if err != nil {
+		return nil, err
+	}
+
+	return fs.withSpeedLimit(rs), nil
+}
+
 // GetDownloadContent 获取用于下载的文件流
 func (fs *FileSystem) GetDownloadContent(ctx context.Context, path string) (io.ReadSeeker, error) {
 	// 获取原始文件流
@@ -62,12 +84,8 @@ func (fs *FileSystem) GetDownloadContent(ctx context.Context, path string) (io.R
 		return nil, err
 	}
 
-	// 如果用户组有速度限制，就返回限制流速的ReaderSeeker
-	if fs.User.Group.SpeedLimit != 0 {
-		return withSpeedLimit(rs, fs.User.Group.SpeedLimit), nil
-	}
-	// 否则返回原始流
-	return rs, nil
+	// 返回限速处理后的文件流
+	return fs.withSpeedLimit(rs), nil
 
 }
 

routers/controllers/file.go

@@ -17,7 +17,23 @@ import (
 	"strconv"
 )
 
-func ArchiveAndDownload(c *gin.Context) {
+func DownloadArchive(c *gin.Context) {
+	// 创建上下文
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	var service explorer.ArchiveDownloadService
+	if err := c.ShouldBindUri(&service); err == nil {
+		res := service.Download(ctx, c)
+		if res.Code != 0 {
+			c.JSON(200, res)
+		}
+	} else {
+		c.JSON(200, ErrorResponse(err))
+	}
+}
+
+func Archive(c *gin.Context) {
 	// 创建上下文
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()

routers/router.go

@@ -67,6 +67,7 @@ func InitRouter() *gin.Engine {
 		{
 			file := sign.Group("file")
 			{
+				// 下載文件
 				file.GET("get/:id/:name", controllers.AnonymousGetContent)
 			}
 		}
@@ -101,8 +102,10 @@ func InitRouter() *gin.Engine {
 				file.GET("thumb/:id", controllers.Thumb)
 				// 取得文件外链
 				file.GET("source/:id", controllers.GetSource)
-				// 测试用：压缩文件和目录并下載
-				file.POST("archive", controllers.ArchiveAndDownload)
+				// 打包要下载的文件
+				file.POST("archive", controllers.Archive)
+				// 下載已经打包好的文件
+				file.Use(middleware.SignRequired()).GET("archive/:id", controllers.DownloadArchive)
 			}
 
 			// 目录

service/explorer/file.go

@@ -2,12 +2,16 @@ package explorer
 
 import (
 	"context"
+	"github.com/HFO4/cloudreve/pkg/cache"
 	"github.com/HFO4/cloudreve/pkg/filesystem"
 	"github.com/HFO4/cloudreve/pkg/filesystem/fsctx"
 	"github.com/HFO4/cloudreve/pkg/serializer"
+	"github.com/HFO4/cloudreve/pkg/util"
 	"github.com/gin-gonic/gin"
 	"io"
 	"net/http"
+	"os"
+	"time"
 )
 
 // FileDownloadService 文件下载服务，path为文件完整路径
@@ -20,6 +24,51 @@ type FileAnonymousGetService struct {
 	Name string `uri:"name" binding:"required"`
 }
 
+type ArchiveDownloadService struct {
+	ID string `uri:"id" binding:"required"`
+}
+
+// Download 下載已打包的多文件
+func (service *ArchiveDownloadService) Download(ctx context.Context, c *gin.Context) serializer.Response {
+	// 创建文件系统
+	fs, err := filesystem.NewFileSystemFromContext(c)
+	if err != nil {
+		return serializer.Err(serializer.CodePolicyNotAllowed, err.Error(), err)
+	}
+
+	// 查找打包的临时文件
+	zipPath, exist := cache.Get("archive_" + service.ID)
+	if !exist {
+		return serializer.Err(404, "归档文件不存在", nil)
+	}
+
+	// 获取文件流
+	rs, err := fs.GetPhysicalFileContent(ctx, zipPath.(string))
+	if err != nil {
+		return serializer.Err(serializer.CodeNotSet, err.Error(), err)
+	}
+
+	c.Header("Content-Type", "application/zip")
+	http.ServeContent(c.Writer, c.Request, "archive.zip", time.Now(), rs)
+
+	// 检查是否需要关闭文件
+	if fc, ok := rs.(io.Closer); ok {
+		err = fc.Close()
+	}
+
+	// 清理资源，删除临时文件
+	_ = cache.Deletes([]string{service.ID}, "archive_")
+	err = os.Remove(zipPath.(string))
+	if err != nil {
+		util.Log().Warning("无法删除临时文件 %s ：%s", zipPath, err)
+	}
+
+	return serializer.Response{
+		Code: 0,
+	}
+
+}
+
 // Download 签名的匿名文件下载
 func (service *FileAnonymousGetService) Download(ctx context.Context, c *gin.Context) serializer.Response {
 	fs, err := filesystem.NewAnonymousFileSystem()

service/explorer/objects.go

@@ -12,6 +12,7 @@ import (
 	"github.com/HFO4/cloudreve/pkg/util"
 	"github.com/gin-gonic/gin"
 	"net/url"
+	"time"
 )
 
 // ItemMoveService 处理多文件/目录移动
@@ -61,7 +62,7 @@ func (service *ItemService) Archive(ctx context.Context, c *gin.Context) seriali
 	zipID := util.RandStringRunes(16)
 	signedURI, err := auth.SignURI(
 		fmt.Sprintf("/api/v3/file/archive/%s", zipID),
-		120,
+		time.Now().Unix()+120,
 	)
 	finalURL := siteURL.ResolveReference(signedURI).String()