vendor: update all dependencies

vendor/github.com/pkg/sftp/request-example.go

@@ -11,6 +11,7 @@ import (
 	"os"
 	"path/filepath"
 	"sort"
+	"strings"
 	"sync"
 	"syscall"
 	"time"
@@ -90,18 +91,51 @@ func (fs *root) Filecmd(r *Request) error {
 		file.name = r.Target
 		fs.files[r.Target] = file
 		delete(fs.files, r.Filepath)
+
+		if file.IsDir() {
+			for path, file := range fs.files {
+				if strings.HasPrefix(path, r.Filepath+"/") {
+					file.name = r.Target + path[len(r.Filepath):]
+					fs.files[r.Target+path[len(r.Filepath):]] = file
+					delete(fs.files, path)
+				}
+			}
+		}
 	case "Rmdir", "Remove":
-		_, err := fs.fetch(filepath.Dir(r.Filepath))
+		file, err := fs.fetch(filepath.Dir(r.Filepath))
 		if err != nil {
 			return err
 		}
+
+		if file.IsDir() {
+			for path := range fs.files {
+				if strings.HasPrefix(path, r.Filepath+"/") {
+					return &os.PathError{
+						Op:   "remove",
+						Path: r.Filepath + "/",
+						Err:  fmt.Errorf("directory is not empty"),
+					}
+				}
+			}
+		}
+
 		delete(fs.files, r.Filepath)
+
 	case "Mkdir":
 		_, err := fs.fetch(filepath.Dir(r.Filepath))
 		if err != nil {
 			return err
 		}
 		fs.files[r.Filepath] = newMemFile(r.Filepath, true)
+	case "Link":
+		file, err := fs.fetch(r.Filepath)
+		if err != nil {
+			return err
+		}
+		if file.IsDir() {
+			return fmt.Errorf("hard link not allowed for directory")
+		}
+		fs.files[r.Target] = file
 	case "Symlink":
 		_, err := fs.fetch(r.Filepath)
 		if err != nil {
@@ -147,15 +181,15 @@ func (fs *root) Filelist(r *Request) (ListerAt, error) {
 		if !file.IsDir() {
 			return nil, syscall.ENOTDIR
 		}
-		ordered_names := []string{}
-		for fn, _ := range fs.files {
+		orderedNames := []string{}
+		for fn := range fs.files {
 			if filepath.Dir(fn) == r.Filepath {
-				ordered_names = append(ordered_names, fn)
+				orderedNames = append(orderedNames, fn)
 			}
 		}
-		sort.Strings(ordered_names)
-		list := make([]os.FileInfo, len(ordered_names))
-		for i, fn := range ordered_names {
+		sort.Strings(orderedNames)
+		list := make([]os.FileInfo, len(orderedNames))
+		for i, fn := range orderedNames {
 			list[i] = fs.files[fn]
 		}
 		return listerat(list), nil
@@ -199,13 +233,15 @@ func (fs *root) fetch(path string) (*memFile, error) {
 
 // Implements os.FileInfo, Reader and Writer interfaces.
 // These are the 3 interfaces necessary for the Handlers.
+// Implements the optional interface TransferError.
 type memFile struct {
-	name        string
-	modtime     time.Time
-	symlink     string
-	isdir       bool
-	content     []byte
-	contentLock sync.RWMutex
+	name          string
+	modtime       time.Time
+	symlink       string
+	isdir         bool
+	content       []byte
+	transferError error
+	contentLock   sync.RWMutex
 }
 
 // factory to make sure modtime is set
@@ -265,3 +301,7 @@ func (f *memFile) WriteAt(p []byte, off int64) (int, error) {
 	copy(f.content[off:], p)
 	return len(p), nil
 }
+
+func (f *memFile) TransferError(err error) {
+	f.transferError = err
+}