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Code Issues Releases Wiki Activity

Address code review comments

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This commit is contained in:
Alexander Neumann 2015-07-26 18:00:53 +02:00
parent d1629e1e4e
commit b85927576b
2 changed files with 12 additions and 12 deletions
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4
cmd/restic/cmd_cat.go
View file

@ -162,12 +162,12 @@ func (cmd CmdCat) Execute(args []string) error {
return err
case "blob":
_, tpe, _, length, err := repo.Index().Lookup(id)
_, blobType, _, length, err := repo.Index().Lookup(id)
if err != nil {
return err
}
if tpe != pack.Data {
if blobType != pack.Data {
return errors.New("wrong type for blob")
}

20
repository/repository.go
View file

@ -86,9 +86,9 @@ func (r *Repository) LoadAndDecrypt(t backend.Type, id backend.ID) ([]byte, erro
}
// LoadBlob tries to load and decrypt content identified by t and id from a
// pack from the backend, the result is stored in buf, which must be large
// enough to hold the complete blob.
func (r *Repository) LoadBlob(t pack.BlobType, id backend.ID, buf []byte) ([]byte, error) {
// pack from the backend, the result is stored in plaintextBuf, which must be
// large enough to hold the complete blob.
func (r *Repository) LoadBlob(t pack.BlobType, id backend.ID, plaintextBuf []byte) ([]byte, error) {
debug.Log("Repo.LoadBlob", "load %v with id %v", t, id.Str())
// lookup pack
packID, tpe, offset, length, err := r.idx.Lookup(id)
@ -97,8 +97,8 @@ func (r *Repository) LoadBlob(t pack.BlobType, id backend.ID, buf []byte) ([]byt
return nil, err
}
if length > uint(cap(buf))+crypto.Extension {
return nil, errors.New("buf is too small")
if length > uint(cap(plaintextBuf))+crypto.Extension {
return nil, fmt.Errorf("buf is too small, need %d more bytes", length-uint(cap(plaintextBuf))-crypto.Extension)
}
if tpe != t {
@ -116,8 +116,8 @@ func (r *Repository) LoadBlob(t pack.BlobType, id backend.ID, buf []byte) ([]byt
}
// make buffer that is large enough for the complete blob
cbuf := make([]byte, length)
_, err = io.ReadFull(rd, cbuf)
ciphertextBuf := make([]byte, length)
_, err = io.ReadFull(rd, ciphertextBuf)
if err != nil {
return nil, err
}
@ -128,17 +128,17 @@ func (r *Repository) LoadBlob(t pack.BlobType, id backend.ID, buf []byte) ([]byt
}
// decrypt
buf, err = r.decryptTo(buf, cbuf)
plaintextBuf, err = r.decryptTo(plaintextBuf, ciphertextBuf)
if err != nil {
return nil, err
}
// check hash
if !backend.Hash(buf).Equal(id) {
if !backend.Hash(plaintextBuf).Equal(id) {
return nil, errors.New("invalid data returned")
}
return buf, nil
return plaintextBuf, nil
}
// LoadJSONUnpacked decrypts the data and afterwards calls json.Unmarshal on