web client: add HTML5 player

Signed-off-by: Nicola Murino <nicola.murino@gmail.com>

dataprovider/user.go

@@ -208,6 +208,16 @@ func (u *User) checkDirWithParents(virtualDirPath, connectionID string) error {
 	return nil
 }
 
+func (u *User) checkLocalHomeDir(connectionID string) {
+	switch u.FsConfig.Provider {
+	case sdk.LocalFilesystemProvider, sdk.CryptedFilesystemProvider:
+		return
+	default:
+		osFs := vfs.NewOsFs(connectionID, u.GetHomeDir(), "")
+		osFs.CheckRootPath(u.Username, u.GetUID(), u.GetGID())
+	}
+}
+
 func (u *User) checkRootPath(connectionID string) error {
 	fs, err := u.GetFilesystemForPath("/", connectionID)
 	if err != nil {
@@ -233,8 +243,8 @@ func (u *User) CheckFsRoot(connectionID string) error {
 	}
 	if isLastActivityRecent(u.LastLogin, delay) {
 		if u.LastLogin > u.UpdatedAt {
-			if u.FsConfig.Provider != sdk.LocalFilesystemProvider && config.IsShared == 1 {
-				return u.checkRootPath(connectionID)
+			if config.IsShared == 1 {
+				u.checkLocalHomeDir(connectionID)
 			}
 			return nil
 		}

go.mod

@@ -65,8 +65,8 @@ require (
 	go.etcd.io/bbolt v1.3.6
 	go.uber.org/automaxprocs v1.5.1
 	gocloud.dev v0.25.0
-	golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d
-	golang.org/x/net v0.0.0-20220624214902-1bab6f366d9e
+	golang.org/x/crypto v0.0.0-20220722155217-630584e8d5aa
+	golang.org/x/net v0.0.0-20220722155237-a158d28d115b
 	golang.org/x/oauth2 v0.0.0-20220722155238-128564f6959c
 	golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f
 	golang.org/x/time v0.0.0-20220722155302-e5dcc9cfc0b9
@@ -165,6 +165,6 @@ require (
 
 replace (
 	github.com/jlaffaye/ftp => github.com/drakkan/ftp v0.0.0-20201114075148-9b9adce499a9
-	golang.org/x/crypto => github.com/drakkan/crypto v0.0.0-20220624102318-5fdf29404a2d
-	golang.org/x/net => github.com/drakkan/net v0.0.0-20220628152131-9c7397602ad7
+	golang.org/x/crypto => github.com/drakkan/crypto v0.0.0-20220723134236-2c43acbc2436
+	golang.org/x/net => github.com/drakkan/net v0.0.0-20220723134121-37f73db6d7c4
 )

go.sum

@@ -259,12 +259,12 @@ github.com/dimchansky/utfbom v1.1.0/go.mod h1:rO41eb7gLfo8SF1jd9F8HplJm1Fewwi4mQ
 github.com/dimchansky/utfbom v1.1.1/go.mod h1:SxdoEBH5qIqFocHMyGOXVAybYJdr71b1Q/j0mACtrfE=
 github.com/dnaeon/go-vcr v1.2.0 h1:zHCHvJYTMh1N7xnV7zf1m1GPBF9Ad0Jk/whtQ1663qI=
 github.com/dnaeon/go-vcr v1.2.0/go.mod h1:R4UdLID7HZT3taECzJs4YgbbH6PIGXB6W/sc5OLb6RQ=
-github.com/drakkan/crypto v0.0.0-20220624102318-5fdf29404a2d h1:VLfi41ryCFZIcCC4jZGAa1zLmF3Mu/GpplwXIuYV8/k=
-github.com/drakkan/crypto v0.0.0-20220624102318-5fdf29404a2d/go.mod h1:SiM6ypd8Xu1xldObYtbDztuUU7xUzMnUULfphXFZmro=
+github.com/drakkan/crypto v0.0.0-20220723134236-2c43acbc2436 h1:cctYUw+d5DrSgUhRSZF/GzDZtvNswdduqIkZM1Wi+qg=
+github.com/drakkan/crypto v0.0.0-20220723134236-2c43acbc2436/go.mod h1:SiM6ypd8Xu1xldObYtbDztuUU7xUzMnUULfphXFZmro=
 github.com/drakkan/ftp v0.0.0-20201114075148-9b9adce499a9 h1:LPH1dEblAOO/LoG7yHPMtBLXhQmjaga91/DDjWk9jWA=
 github.com/drakkan/ftp v0.0.0-20201114075148-9b9adce499a9/go.mod h1:2lmrmq866uF2tnje75wQHzmPXhmSWUt7Gyx2vgK1RCU=
-github.com/drakkan/net v0.0.0-20220628152131-9c7397602ad7 h1:/KuSaF3lQkzeeNsXiTPhnI2w4PlH3hbxN6h8tfKAc5E=
-github.com/drakkan/net v0.0.0-20220628152131-9c7397602ad7/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+github.com/drakkan/net v0.0.0-20220723134121-37f73db6d7c4 h1:NbZDB/9nbn6i9XYsOfeu15vVw8bSnm3tRTVwgkP8OiQ=
+github.com/drakkan/net v0.0.0-20220723134121-37f73db6d7c4/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
 github.com/eikenb/pipeat v0.0.0-20210730190139-06b3e6902001 h1:/ZshrfQzayqRSBDodmp3rhNCHJCff+utvgBuWRbiqu4=
 github.com/eikenb/pipeat v0.0.0-20210730190139-06b3e6902001/go.mod h1:kltMsfRMTHSFdMbK66XdS8mfMW77+FZA1fGY1xYMF84=
 github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=

httpd/api_utils.go

@@ -443,7 +443,7 @@ func checkIfRange(r *http.Request, modtime time.Time) condResult {
 	if err != nil {
 		return condFalse
 	}
-	if modtime.Add(60 * time.Second).Before(t) {
+	if modtime.Unix() == t.Unix() {
 		return condTrue
 	}
 	return condFalse

httpd/httpd_test.go

@@ -11885,6 +11885,8 @@ func TestWebGetFiles(t *testing.T) {
 	rr = executeRequest(req)
 	checkResponseCode(t, http.StatusPartialContent, rr)
 	assert.Equal(t, testFileContents[2:], rr.Body.Bytes())
+	lastModified, err := http.ParseTime(rr.Header().Get("Last-Modified"))
+	assert.NoError(t, err)
 
 	req, _ = http.NewRequest(http.MethodGet, webClientFilesPath+"?path="+testFileName, nil)
 	req.Header.Set("Range", "bytes=-2")
@@ -11913,44 +11915,44 @@ func TestWebGetFiles(t *testing.T) {
 
 	req, _ = http.NewRequest(http.MethodHead, webClientFilesPath+"?path="+testFileName, nil)
 	req.Header.Set("Range", "bytes=2-")
-	req.Header.Set("If-Range", time.Now().UTC().Add(120*time.Second).Format(http.TimeFormat))
+	req.Header.Set("If-Range", lastModified.UTC().Format(http.TimeFormat))
 	setJWTCookieForReq(req, webToken)
 	rr = executeRequest(req)
 	checkResponseCode(t, http.StatusPartialContent, rr)
 
 	req, _ = http.NewRequest(http.MethodHead, webClientFilesPath+"?path="+testFileName, nil)
 	req.Header.Set("Range", "bytes=2-")
-	req.Header.Set("If-Range", time.Now().UTC().Add(-120*time.Second).Format(http.TimeFormat))
+	req.Header.Set("If-Range", lastModified.UTC().Add(-120*time.Second).Format(http.TimeFormat))
 	setJWTCookieForReq(req, webToken)
 	rr = executeRequest(req)
 	checkResponseCode(t, http.StatusOK, rr)
 
 	req, _ = http.NewRequest(http.MethodHead, webClientFilesPath+"?path="+testFileName, nil)
-	req.Header.Set("If-Modified-Since", time.Now().UTC().Add(-120*time.Second).Format(http.TimeFormat))
+	req.Header.Set("If-Modified-Since", lastModified.UTC().Add(-120*time.Second).Format(http.TimeFormat))
 	setJWTCookieForReq(req, webToken)
 	rr = executeRequest(req)
 	checkResponseCode(t, http.StatusOK, rr)
 
 	req, _ = http.NewRequest(http.MethodHead, webClientFilesPath+"?path="+testFileName, nil)
-	req.Header.Set("If-Modified-Since", time.Now().UTC().Add(120*time.Second).Format(http.TimeFormat))
+	req.Header.Set("If-Modified-Since", lastModified.UTC().Add(120*time.Second).Format(http.TimeFormat))
 	setJWTCookieForReq(req, webToken)
 	rr = executeRequest(req)
 	checkResponseCode(t, http.StatusNotModified, rr)
 
 	req, _ = http.NewRequest(http.MethodHead, webClientFilesPath+"?path="+testFileName, nil)
-	req.Header.Set("If-Unmodified-Since", time.Now().UTC().Add(-120*time.Second).Format(http.TimeFormat))
+	req.Header.Set("If-Unmodified-Since", lastModified.UTC().Add(-120*time.Second).Format(http.TimeFormat))
 	setJWTCookieForReq(req, webToken)
 	rr = executeRequest(req)
 	checkResponseCode(t, http.StatusPreconditionFailed, rr)
 
 	req, _ = http.NewRequest(http.MethodHead, userFilesPath+"?path="+testFileName, nil)
-	req.Header.Set("If-Unmodified-Since", time.Now().UTC().Add(-120*time.Second).Format(http.TimeFormat))
+	req.Header.Set("If-Unmodified-Since", lastModified.UTC().Add(-120*time.Second).Format(http.TimeFormat))
 	setBearerForReq(req, webAPIToken)
 	rr = executeRequest(req)
 	checkResponseCode(t, http.StatusPreconditionFailed, rr)
 
 	req, _ = http.NewRequest(http.MethodHead, webClientFilesPath+"?path="+testFileName, nil)
-	req.Header.Set("If-Unmodified-Since", time.Now().UTC().Add(120*time.Second).Format(http.TimeFormat))
+	req.Header.Set("If-Unmodified-Since", lastModified.UTC().Add(120*time.Second).Format(http.TimeFormat))
 	setJWTCookieForReq(req, webToken)
 	rr = executeRequest(req)
 	checkResponseCode(t, http.StatusOK, rr)
@@ -13342,6 +13344,7 @@ func TestGetFilesSFTPBackend(t *testing.T) {
 	user, _, err := httpdtest.AddUser(getTestUser(), http.StatusCreated)
 	assert.NoError(t, err)
 	u := getTestSFTPUser()
+	u.HomeDir = filepath.Clean(os.TempDir())
 	u.FsConfig.SFTPConfig.BufferSize = 2
 	u.Permissions["/adir"] = nil
 	u.Permissions["/adir1"] = []string{dataprovider.PermListItems}
@@ -13351,7 +13354,11 @@ func TestGetFilesSFTPBackend(t *testing.T) {
 			DeniedPatterns: []string{"*.txt"},
 		},
 	}
-	sftpUser, _, err := httpdtest.AddUser(u, http.StatusCreated)
+	sftpUserBuffered, _, err := httpdtest.AddUser(u, http.StatusCreated)
+	assert.NoError(t, err)
+	u.Username += "_unbuffered"
+	u.FsConfig.SFTPConfig.BufferSize = 0
+	sftpUserUnbuffered, _, err := httpdtest.AddUser(u, http.StatusCreated)
 	assert.NoError(t, err)
 
 	testFileName := "testsftpfile"
@@ -13369,58 +13376,58 @@ func TestGetFilesSFTPBackend(t *testing.T) {
 	assert.NoError(t, err)
 	err = os.WriteFile(filepath.Join(user.GetHomeDir(), "adir2", "afile.txt"), testFileContents, os.ModePerm)
 	assert.NoError(t, err)
-	webToken, err := getJWTWebClientTokenFromTestServer(sftpUser.Username, defaultPassword)
-	assert.NoError(t, err)
-	req, _ := http.NewRequest(http.MethodGet, webClientFilesPath, nil)
-	setJWTCookieForReq(req, webToken)
-	rr := executeRequest(req)
-	checkResponseCode(t, http.StatusOK, rr)
+	for _, sftpUser := range []dataprovider.User{sftpUserBuffered, sftpUserUnbuffered} {
+		webToken, err := getJWTWebClientTokenFromTestServer(sftpUser.Username, defaultPassword)
+		assert.NoError(t, err)
+		req, _ := http.NewRequest(http.MethodGet, webClientFilesPath, nil)
+		setJWTCookieForReq(req, webToken)
+		rr := executeRequest(req)
+		checkResponseCode(t, http.StatusOK, rr)
 
-	req, _ = http.NewRequest(http.MethodGet, webClientFilesPath+"?path="+path.Join(testDir, "sub"), nil)
-	setJWTCookieForReq(req, webToken)
-	rr = executeRequest(req)
-	checkResponseCode(t, http.StatusOK, rr)
+		req, _ = http.NewRequest(http.MethodGet, webClientFilesPath+"?path="+path.Join(testDir, "sub"), nil)
+		setJWTCookieForReq(req, webToken)
+		rr = executeRequest(req)
+		checkResponseCode(t, http.StatusOK, rr)
 
-	req, _ = http.NewRequest(http.MethodGet, webClientFilesPath+"?path="+path.Join(testDir, "missing"), nil)
-	setJWTCookieForReq(req, webToken)
-	rr = executeRequest(req)
-	checkResponseCode(t, http.StatusOK, rr)
-	assert.Contains(t, rr.Body.String(), "card-body text-form-error")
-	req, _ = http.NewRequest(http.MethodGet, webClientFilesPath+"?path=adir/sub", nil)
-	setJWTCookieForReq(req, webToken)
-	rr = executeRequest(req)
-	checkResponseCode(t, http.StatusOK, rr)
-	assert.Contains(t, rr.Body.String(), "card-body text-form-error")
+		req, _ = http.NewRequest(http.MethodGet, webClientFilesPath+"?path="+path.Join(testDir, "missing"), nil)
+		setJWTCookieForReq(req, webToken)
+		rr = executeRequest(req)
+		checkResponseCode(t, http.StatusOK, rr)
+		assert.Contains(t, rr.Body.String(), "card-body text-form-error")
+		req, _ = http.NewRequest(http.MethodGet, webClientFilesPath+"?path=adir/sub", nil)
+		setJWTCookieForReq(req, webToken)
+		rr = executeRequest(req)
+		checkResponseCode(t, http.StatusOK, rr)
+		assert.Contains(t, rr.Body.String(), "card-body text-form-error")
 
-	req, _ = http.NewRequest(http.MethodGet, webClientFilesPath+"?path=adir1/afile", nil)
-	setJWTCookieForReq(req, webToken)
-	rr = executeRequest(req)
-	checkResponseCode(t, http.StatusOK, rr)
-	assert.Contains(t, rr.Body.String(), "card-body text-form-error")
+		req, _ = http.NewRequest(http.MethodGet, webClientFilesPath+"?path=adir1/afile", nil)
+		setJWTCookieForReq(req, webToken)
+		rr = executeRequest(req)
+		checkResponseCode(t, http.StatusOK, rr)
+		assert.Contains(t, rr.Body.String(), "card-body text-form-error")
 
-	req, _ = http.NewRequest(http.MethodGet, webClientFilesPath+"?path=adir2/afile.txt", nil)
-	setJWTCookieForReq(req, webToken)
-	rr = executeRequest(req)
-	checkResponseCode(t, http.StatusOK, rr)
-	assert.Contains(t, rr.Body.String(), "card-body text-form-error")
+		req, _ = http.NewRequest(http.MethodGet, webClientFilesPath+"?path=adir2/afile.txt", nil)
+		setJWTCookieForReq(req, webToken)
+		rr = executeRequest(req)
+		checkResponseCode(t, http.StatusOK, rr)
+		assert.Contains(t, rr.Body.String(), "card-body text-form-error")
 
-	req, _ = http.NewRequest(http.MethodGet, webClientFilesPath+"?path="+testFileName, nil)
-	setJWTCookieForReq(req, webToken)
-	rr = executeRequest(req)
-	checkResponseCode(t, http.StatusOK, rr)
-	assert.Equal(t, testFileContents, rr.Body.Bytes())
+		req, _ = http.NewRequest(http.MethodGet, webClientFilesPath+"?path="+testFileName, nil)
+		setJWTCookieForReq(req, webToken)
+		rr = executeRequest(req)
+		checkResponseCode(t, http.StatusOK, rr)
+		assert.Equal(t, testFileContents, rr.Body.Bytes())
 
-	req, _ = http.NewRequest(http.MethodGet, webClientFilesPath+"?path="+testFileName, nil)
-	req.Header.Set("Range", "bytes=2-")
-	setJWTCookieForReq(req, webToken)
-	rr = executeRequest(req)
-	checkResponseCode(t, http.StatusPartialContent, rr)
-	assert.Equal(t, testFileContents[2:], rr.Body.Bytes())
+		req, _ = http.NewRequest(http.MethodGet, webClientFilesPath+"?path="+testFileName, nil)
+		req.Header.Set("Range", "bytes=2-")
+		setJWTCookieForReq(req, webToken)
+		rr = executeRequest(req)
+		checkResponseCode(t, http.StatusPartialContent, rr)
+		assert.Equal(t, testFileContents[2:], rr.Body.Bytes())
 
-	_, err = httpdtest.RemoveUser(sftpUser, http.StatusOK)
-	assert.NoError(t, err)
-	err = os.RemoveAll(sftpUser.GetHomeDir())
-	assert.NoError(t, err)
+		_, err = httpdtest.RemoveUser(sftpUser, http.StatusOK)
+		assert.NoError(t, err)
+	}
 	_, err = httpdtest.RemoveUser(user, http.StatusOK)
 	assert.NoError(t, err)
 	err = os.RemoveAll(user.GetHomeDir())

templates/webclient/files.html

@@ -24,6 +24,7 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 <link href="{{.StaticURL}}/vendor/datatables/responsive.bootstrap4.min.css" rel="stylesheet">
 <link href="{{.StaticURL}}/vendor/datatables/dataTables.checkboxes.css" rel="stylesheet">
 <link href="{{.StaticURL}}/vendor/lightbox2/css/lightbox.min.css" rel="stylesheet">
+<link href="{{.StaticURL}}/vendor/video-js/video-js.min.css" rel="stylesheet" />
 <style>
     div.dataTables_wrapper span.selected-info,
     div.dataTables_wrapper span.selected-item {
@@ -185,6 +186,27 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
     </div>
 </div>
 
+<div class="modal fade" id="videoModal" tabindex="-1" role="dialog" aria-labelledby="videoModalLabel"
+    aria-hidden="true">
+    <div class="modal-dialog modal-lg" role="document">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title" id="videoModalLabel">
+                    <span id="video_title"></span>
+                </h5>
+                <button class="close" type="button" data-dismiss="modal" aria-label="Close">
+                    <span aria-hidden="true">&times;</span>
+                </button>
+            </div>
+            <div class="modal-body">
+                <video id="video_player" class="video-js vjs-big-play-centered vjs-fluid">
+                    <p class="vjs-no-js">To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video</p>
+                  </video>
+            </div>
+        </div>
+    </div>
+</div>
+
 <div class="modal fade" id="spinnerModal" tabindex="-1" role="dialog" data-keyboard="false" data-backdrop="static">
     <div class="modal-dialog modal-dialog-centered justify-content-center" role="document">
         <span style="color: #333333;" class="fa fa-spinner fa-spin fa-3x"></span>
@@ -206,6 +228,7 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 <script src="{{.StaticURL}}/vendor/pdfobject/pdfobject.min.js"></script>
 <script src="{{.StaticURL}}/vendor/codemirror/codemirror.js"></script>
 <script src="{{.StaticURL}}/vendor/codemirror/meta.js"></script>
+<script src="{{.StaticURL}}/vendor/video-js/video.min.js"></script>
 {{if .HasIntegrations}}
 <script type="text/javascript">
     var childReference = null;
@@ -407,6 +430,8 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 {{end}}
 <script type="text/javascript">
     var spinnerDone = false;
+    var player;
+    var playerKeepAlive;
 
     var escapeHTML = function ( t ) {
 		return t
@@ -429,6 +454,17 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
         return shortened+'&#8230;';
     }
 
+    function openVideoPlayer(name, url, videoType){
+        $("#video_title").text(name);
+        $('#videoModal').modal('show');
+        player.src({
+            type: videoType,
+            src: url
+        });
+        keepAlive();
+        playerKeepAlive = setInterval(keepAlive, 300000);
+    }
+
     function getIconForFile(filename) {
         var extension = filename.slice((filename.lastIndexOf(".") - 1 >>> 0) + 2).toLowerCase();
         switch (extension) {
@@ -460,6 +496,7 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
             case "mpeg":
             case "mpv":
             case "3gp":
+            case "mp4":
                 return "far fa-file-video";
             case "jpeg":
             case "jpg":
@@ -622,6 +659,19 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
     }
 
     $(document).ready(function () {
+        player = videojs('video_player', {
+            controls: true,
+            autoplay: false,
+            preload: 'auto'
+        });
+        $('#videoModal').on('hide.bs.modal', function () {
+            player.pause();
+            player.reset();
+            if (playerKeepAlive != null){
+                clearInterval(playerKeepAlive);
+            }
+        });
+
         $('#spinnerModal').on('shown.bs.modal', function () {
             if (spinnerDone){
                 $('#spinnerModal').modal('hide');
@@ -998,6 +1048,14 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
                                     case "ico":
                                         var view_url = row['url']+"&inline=1";
                                         return `<a href="${view_url}" data-lightbox="${filename}" data-title="${filename}"><i class="fas fa-eye"></i></a>`;
+                                    case "mp4":
+                                    case "mov":
+                                        return `<a href="#" onclick="openVideoPlayer('${row["name"]}', '${row['url']}', 'video/mp4');"><i class="fas fa-eye"></i></a>`;
+                                    case "webm":
+                                        return `<a href="#" onclick="openVideoPlayer('${row["name"]}', '${row['url']}', 'video/webm');"><i class="fas fa-eye"></i></a>`;
+                                    case "ogv":
+                                    case "ogg":
+                                        return `<a href="#" onclick="openVideoPlayer('${row["name"]}', '${row['url']}', 'video/ogg');"><i class="fas fa-eye"></i></a>`;
                                     case "pdf":
                                         if (PDFObject.supportsPDFs){
                                             var view_url = row['url'];

templates/webclient/sharefiles.html

@@ -147,6 +147,7 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
             case "mpeg":
             case "mpv":
             case "3gp":
+            case "mp4":
                 return "far fa-file-video";
             case "jpeg":
             case "jpg":

vfs/sftpfs.go

@@ -295,9 +295,6 @@ func (fs *SFTPFs) Open(name string, offset int64) (File, *pipeat.PipeReaderAt, f
 	if err != nil {
 		return nil, nil, nil, err
 	}
-	if fs.config.BufferSize == 0 {
-		return f, nil, nil, err
-	}
 	if offset > 0 {
 		_, err = f.Seek(offset, io.SeekStart)
 		if err != nil {
@@ -305,6 +302,9 @@ func (fs *SFTPFs) Open(name string, offset int64) (File, *pipeat.PipeReaderAt, f
 			return nil, nil, nil, err
 		}
 	}
+	if fs.config.BufferSize == 0 {
+		return f, nil, nil, nil
+	}
 	r, w, err := pipeat.PipeInDir(fs.localTempDir)
 	if err != nil {
 		f.Close()
@@ -507,11 +507,9 @@ func (*SFTPFs) IsNotSupported(err error) bool {
 
 // CheckRootPath creates the specified local root directory if it does not exists
 func (fs *SFTPFs) CheckRootPath(username string, uid int, gid int) bool {
-	if fs.config.BufferSize > 0 {
-		// we need a local directory for temporary files
-		osFs := NewOsFs(fs.ConnectionID(), fs.localTempDir, "")
-		osFs.CheckRootPath(username, uid, gid)
-	}
+	// we need a local directory for temporary files
+	osFs := NewOsFs(fs.ConnectionID(), fs.localTempDir, "")
+	osFs.CheckRootPath(username, uid, gid)
 	if fs.config.Prefix == "/" {
 		return true
 	}