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package share
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import (
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"context"
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"fmt"
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model "github.com/HFO4/cloudreve/models"
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"github.com/HFO4/cloudreve/pkg/filesystem"
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"github.com/HFO4/cloudreve/pkg/filesystem/fsctx"
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"github.com/HFO4/cloudreve/pkg/hashid"
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"github.com/HFO4/cloudreve/pkg/serializer"
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"github.com/HFO4/cloudreve/pkg/util"
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"github.com/HFO4/cloudreve/service/explorer"
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"github.com/gin-gonic/gin"
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"path"
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)
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// ShareGetService 获取分享服务
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type ShareGetService struct {
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Password string `form:"password" binding:"max=255"`
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}
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// ShareService 对分享进行操作的服务,
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// path 为可选文件完整路径,在目录分享下有效
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type ShareService struct {
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Path string `form:"path" uri:"path" binding:"max=65535"`
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}
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// Get 获取分享内容
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func (service *ShareGetService) Get(c *gin.Context) serializer.Response {
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shareCtx, _ := c.Get("share")
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share := shareCtx.(*model.Share)
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userCtx, _ := c.Get("user")
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user := userCtx.(*model.User)
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// 是否已解锁
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unlocked := true
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if share.Password != "" {
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sessionKey := fmt.Sprintf("share_unlock_%d", share.ID)
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unlocked = util.GetSession(c, sessionKey) != nil
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if !unlocked && service.Password != "" {
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// 如果未解锁,且指定了密码,则尝试解锁
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if service.Password == share.Password {
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unlocked = true
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util.SetSession(c, map[string]interface{}{sessionKey: true})
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}
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}
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}
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if unlocked {
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share.Viewed()
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}
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// 如果已经下载过,不需要付积分
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if share.WasDownloadedBy(user, c) {
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share.Score = 0
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}
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return serializer.Response{
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Code: 0,
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Data: serializer.BuildShareResponse(share, unlocked),
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}
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}
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// CreateDownloadSession 创建下载会话
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func (service *ShareService) CreateDownloadSession(c *gin.Context) serializer.Response {
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shareCtx, _ := c.Get("share")
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share := shareCtx.(*model.Share)
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userCtx, _ := c.Get("user")
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user := userCtx.(*model.User)
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// 创建文件系统
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fs, err := filesystem.NewFileSystem(user)
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if err != nil {
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return serializer.Err(serializer.CodePolicyNotAllowed, err.Error(), err)
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}
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defer fs.Recycle()
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// 重设文件系统处理目标为源文件
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err = fs.SetTargetByInterface(share.GetSource())
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if err != nil {
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return serializer.Err(serializer.CodePolicyNotAllowed, "源文件不存在", err)
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}
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// 取得下载地址
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downloadURL, err := fs.GetDownloadURL(context.Background(), service.Path, "download_timeout")
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if err != nil {
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return serializer.Err(serializer.CodeNotSet, err.Error(), err)
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}
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return serializer.Response{
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Code: 0,
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Data: downloadURL,
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}
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}
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// PreviewContent 预览文件,需要登录会话, isText - 是否为文本文件,文本文件会
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// 强制经由服务端中转
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func (service *ShareService) PreviewContent(ctx context.Context, c *gin.Context, isText bool) serializer.Response {
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shareCtx, _ := c.Get("share")
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share := shareCtx.(*model.Share)
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// 用于调下层service
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if share.IsDir {
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ctx = context.WithValue(ctx, fsctx.FolderModelCtx, share.GetSource())
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} else {
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ctx = context.WithValue(ctx, fsctx.FileModelCtx, share.GetSource())
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}
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subService := explorer.SingleFileService{
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Path: service.Path,
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}
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return subService.PreviewContent(ctx, c, isText)
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}
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// CreateDocPreviewSession 创建Office预览会话,返回预览地址
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func (service *ShareService) CreateDocPreviewSession(c *gin.Context) serializer.Response {
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shareCtx, _ := c.Get("share")
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share := shareCtx.(*model.Share)
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// 用于调下层service
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ctx := context.Background()
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if share.IsDir {
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ctx = context.WithValue(ctx, fsctx.FolderModelCtx, share.GetSource())
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} else {
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ctx = context.WithValue(ctx, fsctx.FileModelCtx, share.GetSource())
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}
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subService := explorer.SingleFileService{
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Path: service.Path,
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}
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return subService.CreateDocPreviewSession(ctx, c)
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}
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// SaveToMyFile 将此分享转存到自己的网盘
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func (service *ShareService) SaveToMyFile(c *gin.Context) serializer.Response {
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shareCtx, _ := c.Get("share")
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share := shareCtx.(*model.Share)
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userCtx, _ := c.Get("user")
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user := userCtx.(*model.User)
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// 不能转存自己的文件
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if share.UserID == user.ID {
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return serializer.Err(serializer.CodePolicyNotAllowed, "不能转存自己的分享", nil)
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}
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// 创建文件系统
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fs, err := filesystem.NewFileSystem(user)
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if err != nil {
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return serializer.Err(serializer.CodePolicyNotAllowed, err.Error(), err)
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}
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defer fs.Recycle()
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// 重设文件系统处理目标为源文件
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err = fs.SetTargetByInterface(share.GetSource())
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if err != nil {
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return serializer.Err(serializer.CodePolicyNotAllowed, "源文件不存在", err)
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}
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err = fs.SaveTo(context.Background(), service.Path)
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if err != nil {
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return serializer.Err(serializer.CodeNotSet, err.Error(), err)
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}
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return serializer.Response{}
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}
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// List 列出分享的目录下的对象
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func (service *ShareService) List(c *gin.Context) serializer.Response {
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shareCtx, _ := c.Get("share")
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share := shareCtx.(*model.Share)
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if !share.IsDir {
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return serializer.ParamErr("此分享无法列目录", nil)
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}
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if !path.IsAbs(service.Path) {
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return serializer.ParamErr("路径无效", nil)
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}
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// 创建文件系统
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fs, err := filesystem.NewFileSystem(share.GetCreator())
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if err != nil {
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return serializer.Err(serializer.CodePolicyNotAllowed, err.Error(), err)
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}
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defer fs.Recycle()
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// 上下文
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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// 重设根目录
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fs.SetTargetDir(&[]model.Folder{*share.GetSource().(*model.Folder)})
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fs.DirTarget[0].Name = "/"
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// 分享Key上下文
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ctx = context.WithValue(ctx, fsctx.ShareKeyCtx, hashid.HashID(share.ID, hashid.ShareID))
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// 获取子项目
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objects, err := fs.List(ctx, service.Path, nil)
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if err != nil {
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return serializer.Err(serializer.CodeCreateFolderFailed, err.Error(), err)
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}
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return serializer.Response{
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Code: 0,
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Data: objects,
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}
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}
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