[chore] update dependencies (#4423)

- codeberg.org/gruf/go-ffmpreg: v0.6.10 -> v0.6.11
- github.com/spf13/cast: v1.9.2 -> v1.10.0
- github.com/spf13/viper: v1.20.1 -> v1.21.0
- golang.org/x/crypto: v0.41.0 -> v0.42.0
- golang.org/x/image: v0.30.0 -> v0.31.0

Reviewed-on: https://codeberg.org/superseriousbusiness/gotosocial/pulls/4423
Co-authored-by: kim <grufwub@gmail.com>
Co-committed-by: kim <grufwub@gmail.com>

vendor/github.com/fsnotify/fsnotify/backend_fen.go

@@ -9,6 +9,7 @@ package fsnotify
 import (
 	"errors"
 	"fmt"
+	"io/fs"
 	"os"
 	"path/filepath"
 	"sync"
@@ -19,27 +20,25 @@ import (
 )
 
 type fen struct {
+	*shared
 	Events chan Event
 	Errors chan error
 
 	mu      sync.Mutex
 	port    *unix.EventPort
-	done    chan struct{} // Channel for sending a "quit message" to the reader goroutine
 	dirs    map[string]Op // Explicitly watched directories
 	watches map[string]Op // Explicitly watched non-directories
 }
 
-func newBackend(ev chan Event, errs chan error) (backend, error) {
-	return newBufferedBackend(0, ev, errs)
-}
+var defaultBufferSize = 0
 
-func newBufferedBackend(sz uint, ev chan Event, errs chan error) (backend, error) {
+func newBackend(ev chan Event, errs chan error) (backend, error) {
 	w := &fen{
+		shared:  newShared(ev, errs),
 		Events:  ev,
 		Errors:  errs,
 		dirs:    make(map[string]Op),
 		watches: make(map[string]Op),
-		done:    make(chan struct{}),
 	}
 
 	var err error
@@ -52,49 +51,10 @@ func newBufferedBackend(sz uint, ev chan Event, errs chan error) (backend, error
 	return w, nil
 }
 
-// sendEvent attempts to send an event to the user, returning true if the event
-// was put in the channel successfully and false if the watcher has been closed.
-func (w *fen) sendEvent(name string, op Op) (sent bool) {
-	select {
-	case <-w.done:
-		return false
-	case w.Events <- Event{Name: name, Op: op}:
-		return true
-	}
-}
-
-// sendError attempts to send an error to the user, returning true if the error
-// was put in the channel successfully and false if the watcher has been closed.
-func (w *fen) sendError(err error) (sent bool) {
-	if err == nil {
-		return true
-	}
-	select {
-	case <-w.done:
-		return false
-	case w.Errors <- err:
-		return true
-	}
-}
-
-func (w *fen) isClosed() bool {
-	select {
-	case <-w.done:
-		return true
-	default:
-		return false
-	}
-}
-
 func (w *fen) Close() error {
-	// Take the lock used by associateFile to prevent lingering events from
-	// being processed after the close
-	w.mu.Lock()
-	defer w.mu.Unlock()
-	if w.isClosed() {
+	if w.shared.close() {
 		return nil
 	}
-	close(w.done)
 	return w.port.Close()
 }
 
@@ -209,7 +169,7 @@ func (w *fen) readEvents() {
 				return
 			}
 			// There was an error not caused by calling w.Close()
-			if !w.sendError(err) {
+			if !w.sendError(fmt.Errorf("port.Get: %w", err)) {
 				return
 			}
 		}
@@ -277,13 +237,13 @@ func (w *fen) handleEvent(event *unix.PortEvent) error {
 	isWatched := watchedDir || watchedPath
 
 	if events&unix.FILE_DELETE != 0 {
-		if !w.sendEvent(path, Remove) {
+		if !w.sendEvent(Event{Name: path, Op: Remove}) {
 			return nil
 		}
 		reRegister = false
 	}
 	if events&unix.FILE_RENAME_FROM != 0 {
-		if !w.sendEvent(path, Rename) {
+		if !w.sendEvent(Event{Name: path, Op: Rename}) {
 			return nil
 		}
 		// Don't keep watching the new file name
@@ -297,7 +257,7 @@ func (w *fen) handleEvent(event *unix.PortEvent) error {
 
 		// inotify reports a Remove event in this case, so we simulate this
 		// here.
-		if !w.sendEvent(path, Remove) {
+		if !w.sendEvent(Event{Name: path, Op: Remove}) {
 			return nil
 		}
 		// Don't keep watching the file that was removed
@@ -331,7 +291,7 @@ func (w *fen) handleEvent(event *unix.PortEvent) error {
 		// get here, the sudirectory is already gone. Clearly we were watching
 		// this path but now it is gone. Let's tell the user that it was
 		// removed.
-		if !w.sendEvent(path, Remove) {
+		if !w.sendEvent(Event{Name: path, Op: Remove}) {
 			return nil
 		}
 		// Suppress extra write events on removed directories; they are not
@@ -346,7 +306,7 @@ func (w *fen) handleEvent(event *unix.PortEvent) error {
 		if err != nil {
 			// The symlink still exists, but the target is gone. Report the
 			// Remove similar to above.
-			if !w.sendEvent(path, Remove) {
+			if !w.sendEvent(Event{Name: path, Op: Remove}) {
 				return nil
 			}
 			// Don't return the error
@@ -359,7 +319,7 @@ func (w *fen) handleEvent(event *unix.PortEvent) error {
 				return err
 			}
 		} else {
-			if !w.sendEvent(path, Write) {
+			if !w.sendEvent(Event{Name: path, Op: Write}) {
 				return nil
 			}
 		}
@@ -367,7 +327,7 @@ func (w *fen) handleEvent(event *unix.PortEvent) error {
 	if events&unix.FILE_ATTRIB != 0 && stat != nil {
 		// Only send Chmod if perms changed
 		if stat.Mode().Perm() != fmode.Perm() {
-			if !w.sendEvent(path, Chmod) {
+			if !w.sendEvent(Event{Name: path, Op: Chmod}) {
 				return nil
 			}
 		}
@@ -376,17 +336,27 @@ func (w *fen) handleEvent(event *unix.PortEvent) error {
 	if stat != nil {
 		// If we get here, it means we've hit an event above that requires us to
 		// continue watching the file or directory
-		return w.associateFile(path, stat, isWatched)
+		err := w.associateFile(path, stat, isWatched)
+		if errors.Is(err, fs.ErrNotExist) {
+			// Path may have been removed since the stat.
+			err = nil
+		}
+		return err
 	}
 	return nil
 }
 
+// The directory was modified, so we must find unwatched entities and watch
+// them. If something was removed from the directory, nothing will happen, as
+// everything else should still be watched.
 func (w *fen) updateDirectory(path string) error {
-	// The directory was modified, so we must find unwatched entities and watch
-	// them. If something was removed from the directory, nothing will happen,
-	// as everything else should still be watched.
 	files, err := os.ReadDir(path)
 	if err != nil {
+		// Directory no longer exists: probably just deleted since we got the
+		// event.
+		if errors.Is(err, fs.ErrNotExist) {
+			return nil
+		}
 		return err
 	}
 
@@ -401,10 +371,15 @@ func (w *fen) updateDirectory(path string) error {
 			return err
 		}
 		err = w.associateFile(path, finfo, false)
+		if errors.Is(err, fs.ErrNotExist) {
+			// File may have disappeared between getting the dir listing and
+			// adding the port: that's okay to ignore.
+			continue
+		}
 		if !w.sendError(err) {
 			return nil
 		}
-		if !w.sendEvent(path, Create) {
+		if !w.sendEvent(Event{Name: path, Op: Create}) {
 			return nil
 		}
 	}
@@ -430,7 +405,7 @@ func (w *fen) associateFile(path string, stat os.FileInfo, follow bool) error {
 		// has fired but we haven't processed it yet.
 		err := w.port.DissociatePath(path)
 		if err != nil && !errors.Is(err, unix.ENOENT) {
-			return err
+			return fmt.Errorf("port.DissociatePath(%q): %w", path, err)
 		}
 	}
 
@@ -446,14 +421,22 @@ func (w *fen) associateFile(path string, stat os.FileInfo, follow bool) error {
 	if true {
 		events |= unix.FILE_ATTRIB
 	}
-	return w.port.AssociatePath(path, stat, events, stat.Mode())
+	err := w.port.AssociatePath(path, stat, events, stat.Mode())
+	if err != nil {
+		return fmt.Errorf("port.AssociatePath(%q): %w", path, err)
+	}
+	return nil
 }
 
 func (w *fen) dissociateFile(path string, stat os.FileInfo, unused bool) error {
 	if !w.port.PathIsWatched(path) {
 		return nil
 	}
-	return w.port.DissociatePath(path)
+	err := w.port.DissociatePath(path)
+	if err != nil {
+		return fmt.Errorf("port.DissociatePath(%q): %w", path, err)
+	}
+	return nil
 }
 
 func (w *fen) WatchList() []string {