1 files changed, 207 insertions, 0 deletions
diff --git a/services/repository/files/upload.go b/services/repository/files/upload.go
new file mode 100644
index 0000000000..98d01506d5
--- /dev/null
+++ b/services/repository/files/upload.go
@@ -0,0 +1,207 @@
+// Copyright 2019 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package files
+
+import (
+	"fmt"
+	"os"
+	"path"
+	"strings"
+
+	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/git"
+	"code.gitea.io/gitea/modules/lfs"
+	"code.gitea.io/gitea/modules/setting"
+)
+
+// UploadRepoFileOptions contains the uploaded repository file options
+type UploadRepoFileOptions struct {
+	LastCommitID string
+	OldBranch    string
+	NewBranch    string
+	TreePath     string
+	Message      string
+	Files        []string // In UUID format.
+	Signoff      bool
+}
+
+type uploadInfo struct {
+	upload        *models.Upload
+	lfsMetaObject *models.LFSMetaObject
+}
+
+func cleanUpAfterFailure(infos *[]uploadInfo, t *TemporaryUploadRepository, original error) error {
+	for _, info := range *infos {
+		if info.lfsMetaObject == nil {
+			continue
+		}
+		if !info.lfsMetaObject.Existing {
+			if _, err := t.repo.RemoveLFSMetaObjectByOid(info.lfsMetaObject.Oid); err != nil {
+				original = fmt.Errorf("%v, %v", original, err)
+			}
+		}
+	}
+	return original
+}
+
+// UploadRepoFiles uploads files to the given repository
+func UploadRepoFiles(repo *models.Repository, doer *models.User, opts *UploadRepoFileOptions) error {
+	if len(opts.Files) == 0 {
+		return nil
+	}
+
+	uploads, err := models.GetUploadsByUUIDs(opts.Files)
+	if err != nil {
+		return fmt.Errorf("GetUploadsByUUIDs [uuids: %v]: %v", opts.Files, err)
+	}
+
+	names := make([]string, len(uploads))
+	infos := make([]uploadInfo, len(uploads))
+	for i, upload := range uploads {
+		// Check file is not lfs locked, will return nil if lock setting not enabled
+		filepath := path.Join(opts.TreePath, upload.Name)
+		lfsLock, err := repo.GetTreePathLock(filepath)
+		if err != nil {
+			return err
+		}
+		if lfsLock != nil && lfsLock.OwnerID != doer.ID {
+			return models.ErrLFSFileLocked{RepoID: repo.ID, Path: filepath, UserName: lfsLock.Owner.Name}
+		}
+
+		names[i] = upload.Name
+		infos[i] = uploadInfo{upload: upload}
+	}
+
+	t, err := NewTemporaryUploadRepository(repo)
+	if err != nil {
+		return err
+	}
+	defer t.Close()
+	if err := t.Clone(opts.OldBranch); err != nil {
+		return err
+	}
+	if err := t.SetDefaultIndex(); err != nil {
+		return err
+	}
+
+	var filename2attribute2info map[string]map[string]string
+	if setting.LFS.StartServer {
+		filename2attribute2info, err = t.gitRepo.CheckAttribute(git.CheckAttributeOpts{
+			Attributes: []string{"filter"},
+			Filenames:  names,
+		})
+		if err != nil {
+			return err
+		}
+	}
+
+	// Copy uploaded files into repository.
+	for i := range infos {
+		if err := copyUploadedLFSFileIntoRepository(&infos[i], filename2attribute2info, t, opts.TreePath); err != nil {
+			return err
+		}
+	}
+
+	// Now write the tree
+	treeHash, err := t.WriteTree()
+	if err != nil {
+		return err
+	}
+
+	// make author and committer the doer
+	author := doer
+	committer := doer
+
+	// Now commit the tree
+	commitHash, err := t.CommitTree(author, committer, treeHash, opts.Message, opts.Signoff)
+	if err != nil {
+		return err
+	}
+
+	// Now deal with LFS objects
+	for i := range infos {
+		if infos[i].lfsMetaObject == nil {
+			continue
+		}
+		infos[i].lfsMetaObject, err = models.NewLFSMetaObject(infos[i].lfsMetaObject)
+		if err != nil {
+			// OK Now we need to cleanup
+			return cleanUpAfterFailure(&infos, t, err)
+		}
+		// Don't move the files yet - we need to ensure that
+		// everything can be inserted first
+	}
+
+	// OK now we can insert the data into the store - there's no way to clean up the store
+	// once it's in there, it's in there.
+	contentStore := lfs.NewContentStore()
+	for _, info := range infos {
+		if err := uploadToLFSContentStore(info, contentStore); err != nil {
+			return cleanUpAfterFailure(&infos, t, err)
+		}
+	}
+
+	// Then push this tree to NewBranch
+	if err := t.Push(doer, commitHash, opts.NewBranch); err != nil {
+		return err
+	}
+
+	return models.DeleteUploads(uploads...)
+}
+
+func copyUploadedLFSFileIntoRepository(info *uploadInfo, filename2attribute2info map[string]map[string]string, t *TemporaryUploadRepository, treePath string) error {
+	file, err := os.Open(info.upload.LocalPath())
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	var objectHash string
+	if setting.LFS.StartServer && filename2attribute2info[info.upload.Name] != nil && filename2attribute2info[info.upload.Name]["filter"] == "lfs" {
+		// Handle LFS
+		// FIXME: Inefficient! this should probably happen in models.Upload
+		pointer, err := lfs.GeneratePointer(file)
+		if err != nil {
+			return err
+		}
+
+		info.lfsMetaObject = &models.LFSMetaObject{Pointer: pointer, RepositoryID: t.repo.ID}
+
+		if objectHash, err = t.HashObject(strings.NewReader(pointer.StringContent())); err != nil {
+			return err
+		}
+	} else if objectHash, err = t.HashObject(file); err != nil {
+		return err
+	}
+
+	// Add the object to the index
+	return t.AddObjectToIndex("100644", objectHash, path.Join(treePath, info.upload.Name))
+}
+
+func uploadToLFSContentStore(info uploadInfo, contentStore *lfs.ContentStore) error {
+	if info.lfsMetaObject == nil {
+		return nil
+	}
+	exist, err := contentStore.Exists(info.lfsMetaObject.Pointer)
+	if err != nil {
+		return err
+	}
+	if !exist {
+		file, err := os.Open(info.upload.LocalPath())
+		if err != nil {
+			return err
+		}
+
+		defer file.Close()
+		// FIXME: Put regenerates the hash and copies the file over.
+		// I guess this strictly ensures the soundness of the store but this is inefficient.
+		if err := contentStore.Put(info.lfsMetaObject.Pointer, file); err != nil {
+			// OK Now we need to cleanup
+			// Can't clean up the store, once uploaded there they're there.
+			return err
+		}
+	}
+	return nil
+}