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lib/model: Encrypted fileinfo trailer needs to be in wire format (#7505)

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Simon Frei 2021-03-21 10:34:08 +01:00 committed by GitHub
parent a87c5515bd
commit bc08a951f1
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 15 additions and 4 deletions
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7
cmd/syncthing/decrypt/decrypt.go
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@ -18,6 +18,7 @@ import (
"github.com/syncthing/syncthing/lib/config"
"github.com/syncthing/syncthing/lib/fs"
"github.com/syncthing/syncthing/lib/osutil"
"github.com/syncthing/syncthing/lib/protocol"
"github.com/syncthing/syncthing/lib/scanner"
)
@ -79,7 +80,7 @@ func (c *CLI) walk() error {
dstFs = fs.NewFilesystem(fs.FilesystemTypeBasic, c.To)
}
return srcFs.Walk("/", func(path string, info fs.FileInfo, err error) error {
return srcFs.Walk(".", func(path string, info fs.FileInfo, err error) error {
if err != nil {
return err
}
@ -142,6 +143,10 @@ func (c *CLI) process(srcFs fs.Filesystem, dstFs fs.Filesystem, path string) err
return fmt.Errorf("%s: loading metadata trailer: %w", path, err)
}
// Workaround for a bug in <= v1.15.0-rc.5 where we stored names
// in native format, while protocol expects wire format (slashes).
encFi.Name = osutil.NormalizedFilename(encFi.Name)
plainFi, err := protocol.DecryptFileInfo(*encFi, c.folderKey)
if err != nil {
return fmt.Errorf("%s: decrypting metadata: %w", path, err)

12
lib/model/sharedpullerstate.go
View File

@ -13,6 +13,7 @@ import (
"github.com/pkg/errors"
"github.com/syncthing/syncthing/lib/fs"
"github.com/syncthing/syncthing/lib/osutil"
"github.com/syncthing/syncthing/lib/protocol"
"github.com/syncthing/syncthing/lib/sync"
)
@ -346,8 +347,13 @@ func (s *sharedPullerState) finalClose() (bool, error) {
// folder from encrypted data we can extract this FileInfo from the end of
// the file and regain the original metadata.
func (s *sharedPullerState) finalizeEncrypted() error {
bs := make([]byte, encryptionTrailerSize(s.file))
n, err := s.file.MarshalTo(bs)
// Here the file is in native format, while encryption happens in
// wire format (always slashes).
wireFile := s.file
wireFile.Name = osutil.NormalizedFilename(wireFile.Name)
bs := make([]byte, encryptionTrailerSize(wireFile))
n, err := wireFile.MarshalTo(bs)
if err != nil {
return err
}
@ -359,7 +365,7 @@ func (s *sharedPullerState) finalizeEncrypted() error {
return err
}
}
if _, err := s.writer.WriteAt(bs, s.file.Size); err != nil {
if _, err := s.writer.WriteAt(bs, wireFile.Size); err != nil {
return err
}