// Copyright 2022 The Gitea Authors. All rights reserved. // SPDX-License-Identifier: MIT package container import ( "context" "errors" "io" "os" packages_model "code.gitea.io/gitea/models/packages" packages_module "code.gitea.io/gitea/modules/packages" "code.gitea.io/gitea/modules/setting" "code.gitea.io/gitea/modules/tempdir" ) var ( // errWriteAfterRead occurs if Write is called after a read operation errWriteAfterRead = errors.New("write is unsupported after a read operation") // errOffsetMissmatch occurs if the file offset is different than the model errOffsetMissmatch = errors.New("offset mismatch between file and model") ) // BlobUploader handles chunked blob uploads type BlobUploader struct { *packages_model.PackageBlobUpload *packages_module.MultiHasher file *os.File reading bool } func uploadPathTempDir() *tempdir.TempDir { return setting.AppDataTempDir("package-upload") } func buildFilePath(uploadPath *tempdir.TempDir, id string) string { return uploadPath.JoinPath(id) } // NewBlobUploader creates a new blob uploader for the given id func NewBlobUploader(ctx context.Context, id string) (*BlobUploader, error) { model, err := packages_model.GetBlobUploadByID(ctx, id) if err != nil { return nil, err } hash := packages_module.NewMultiHasher() if len(model.HashStateBytes) != 0 { if err := hash.UnmarshalBinary(model.HashStateBytes); err != nil { return nil, err } } uploadPath := uploadPathTempDir() _, err = uploadPath.MkdirAllSub("") if err != nil { return nil, err } f, err := os.OpenFile(buildFilePath(uploadPath, model.ID), os.O_RDWR|os.O_CREATE, 0o666) if err != nil { return nil, err } return &BlobUploader{ model, hash, f, false, }, nil } // Close implements io.Closer func (u *BlobUploader) Close() error { return u.file.Close() } // Append appends a chunk of data and updates the model func (u *BlobUploader) Append(ctx context.Context, r io.Reader) error { if u.reading { return errWriteAfterRead } offset, err := u.file.Seek(0, io.SeekEnd) if err != nil { return err } if offset != u.BytesReceived { return errOffsetMissmatch } n, err := io.Copy(io.MultiWriter(u.file, u.MultiHasher), r) if err != nil { return err } // fast path if nothing was written if n == 0 { return nil } u.BytesReceived += n u.HashStateBytes, err = u.MultiHasher.MarshalBinary() if err != nil { return err } return packages_model.UpdateBlobUpload(ctx, u.PackageBlobUpload) } func (u *BlobUploader) Size() int64 { return u.BytesReceived } // Read implements io.Reader func (u *BlobUploader) Read(p []byte) (int, error) { if !u.reading { _, err := u.file.Seek(0, io.SeekStart) if err != nil { return 0, err } u.reading = true } return u.file.Read(p) } // RemoveBlobUploadByID Remove deletes the data and the model of a blob upload func RemoveBlobUploadByID(ctx context.Context, id string) error { if err := packages_model.DeleteBlobUploadByID(ctx, id); err != nil { return err } err := os.Remove(buildFilePath(uploadPathTempDir(), id)) if err != nil && !os.IsNotExist(err) { return err } return nil } -tests-for-moving-a-file-from-and-to-a-shared-folder'>add-integration-tests-for-moving-a-file-from-and-to-a-shared-folder Nextcloud server, a safe home for all your data: https://github.com/nextcloud/serverwww-data
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