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Fix content size does not match error when uploading lfs file (#29259)

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![image](https://github.com/go-gitea/gitea/assets/38434877/cd726b4d-4771-4547-8aee-ae4e4b56b1d1)
When we update an lfs file by API
`api/v1/repos/{owner}/{repo}/contents/{filepath}`, there will show an
error

```json
{
  "message": "Put \"05904d6c7b\": readfrom tcp [::1]:57300->[::1]:9000: content size does not match",
  "url": "http://localhost:3000/api/swagger"
}
```

The reason of this error is
https://github.com/go-gitea/gitea/blob/main/services/repository/files/update.go,
in this file, the `file.ContentReader` been used twice. So when use
`file.ContentReader` in the second time, the `i` of this Reader has been
updated to the length of the content. it will return 0 and an `io.EOF`
error when we try to read cotent from this Reader.

(cherry picked from commit 35d5e4aea4bb02a0b4c7b38ecb2acf612151e891)
This commit is contained in:
vincent 2024-02-19 22:50:03 +08:00 committed by Earl Warren
parent f796548225
commit fb137d1e49
No known key found for this signature in database
GPG key ID: 0579CB2928A78A00
2 changed files with 6 additions and 2 deletions
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2
routers/api/v1/repo/file.go
View file

@ -425,7 +425,7 @@ func canReadFiles(r *context.Repository) bool {
return r.Permission.CanRead(unit.TypeCode)
}
func base64Reader(s string) (io.Reader, error) {
func base64Reader(s string) (io.ReadSeeker, error) {
b, err := base64.StdEncoding.DecodeString(s)
if err != nil {
return nil, err

6
services/repository/files/update.go
View file

@ -40,7 +40,7 @@ type ChangeRepoFile struct {
Operation string
TreePath string
FromTreePath string
ContentReader io.Reader
ContentReader io.ReadSeeker
SHA string
Options *RepoFileOptions
}
@ -448,6 +448,10 @@ func CreateOrUpdateFile(ctx context.Context, t *TemporaryUploadRepository, file
return err
}
if !exist {
_, err := file.ContentReader.Seek(0, io.SeekStart)
if err != nil {
return err
}
if err := contentStore.Put(lfsMetaObject.Pointer, file.ContentReader); err != nil {
if _, err2 := git_model.RemoveLFSMetaObjectByOid(ctx, repoID, lfsMetaObject.Oid); err2 != nil {
return fmt.Errorf("unable to remove failed inserted LFS object %s: %v (Prev Error: %w)", lfsMetaObject.Oid, err2, err)