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// Copyright 2016 The Gogs Authors. All rights reserved.
// Copyright 2019 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package repo
import (
"context"
"fmt"
"io"
"mime/multipart"
"os"
"path"
"code.gitea.io/gitea/models/db"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/util"
gouuid "github.com/google/uuid"
)
// ErrUploadNotExist represents a "UploadNotExist" kind of error.
type ErrUploadNotExist struct {
ID int64
UUID string
}
// IsErrUploadNotExist checks if an error is a ErrUploadNotExist.
func IsErrUploadNotExist(err error) bool {
_, ok := err.(ErrUploadNotExist)
return ok
}
func (err ErrUploadNotExist) Error() string {
return fmt.Sprintf("attachment does not exist [id: %d, uuid: %s]", err.ID, err.UUID)
}
func (err ErrUploadNotExist) Unwrap() error {
return util.ErrNotExist
}
// Upload represent a uploaded file to a repo to be deleted when moved
type Upload struct {
ID int64 `xorm:"pk autoincr"`
UUID string `xorm:"uuid UNIQUE"`
Name string
}
func init() {
db.RegisterModel(new(Upload))
}
// UploadLocalPath returns where uploads is stored in local file system based on given UUID.
func UploadLocalPath(uuid string) string {
return path.Join(setting.Repository.Upload.TempPath, uuid[0:1], uuid[1:2], uuid)
}
// LocalPath returns where uploads are temporarily stored in local file system.
func (upload *Upload) LocalPath() string {
return UploadLocalPath(upload.UUID)
}
// NewUpload creates a new upload object.
func NewUpload(ctx context.Context, name string, buf []byte, file multipart.File) (_ *Upload, err error) {
upload := &Upload{
UUID: gouuid.New().String(),
Name: name,
}
localPath := upload.LocalPath()
if err = os.MkdirAll(path.Dir(localPath), os.ModePerm); err != nil {
return nil, fmt.Errorf("MkdirAll: %w", err)
}
fw, err := os.Create(localPath)
if err != nil {
return nil, fmt.Errorf("Create: %w", err)
}
defer fw.Close()
if _, err = fw.Write(buf); err != nil {
return nil, fmt.Errorf("Write: %w", err)
} else if _, err = io.Copy(fw, file); err != nil {
return nil, fmt.Errorf("Copy: %w", err)
}
if _, err := db.GetEngine(ctx).Insert(upload); err != nil {
return nil, err
}
return upload, nil
}
// GetUploadByUUID returns the Upload by UUID
func GetUploadByUUID(ctx context.Context, uuid string) (*Upload, error) {
upload := &Upload{}
has, err := db.GetEngine(ctx).Where("uuid=?", uuid).Get(upload)
if err != nil {
return nil, err
} else if !has {
return nil, ErrUploadNotExist{0, uuid}
}
return upload, nil
}
// GetUploadsByUUIDs returns multiple uploads by UUIDS
func GetUploadsByUUIDs(ctx context.Context, uuids []string) ([]*Upload, error) {
if len(uuids) == 0 {
return []*Upload{}, nil
}
// Silently drop invalid uuids.
uploads := make([]*Upload, 0, len(uuids))
return uploads, db.GetEngine(ctx).In("uuid", uuids).Find(&uploads)
}
// DeleteUploads deletes multiple uploads
func DeleteUploads(ctx context.Context, uploads ...*Upload) (err error) {
if len(uploads) == 0 {
return nil
}
ctx, committer, err := db.TxContext(ctx)
if err != nil {
return err
}
defer committer.Close()
ids := make([]int64, len(uploads))
for i := 0; i < len(uploads); i++ {
ids[i] = uploads[i].ID
}
if err = db.DeleteByIDs[Upload](ctx, ids...); err != nil {
return fmt.Errorf("delete uploads: %w", err)
}
if err = committer.Commit(); err != nil {
return err
}
for _, upload := range uploads {
localPath := upload.LocalPath()
isFile, err := util.IsFile(localPath)
if err != nil {
log.Error("Unable to check if %s is a file. Error: %v", localPath, err)
}
if !isFile {
continue
}
if err := util.Remove(localPath); err != nil {
return fmt.Errorf("remove upload: %w", err)
}
}
return nil
}
// DeleteUploadByUUID deletes a upload by UUID
func DeleteUploadByUUID(ctx context.Context, uuid string) error {
upload, err := GetUploadByUUID(ctx, uuid)
if err != nil {
if IsErrUploadNotExist(err) {
return nil
}
return fmt.Errorf("GetUploadByUUID: %w", err)
}
if err := DeleteUploads(ctx, upload); err != nil {
return fmt.Errorf("DeleteUpload: %w", err)
}
return nil
}
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