Refactor repository transfer (#33211)

- Both have `RejectTransfer` and `CancelTransfer` because the permission
checks are not the same. `CancelTransfer` can be done by the doer or
those who have admin permission to access this repository.
`RejectTransfer` can be done by the receiver user if it's an individual
or those who can create repositories if it's an organization.

- Some tests are wrong, this PR corrects them.

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

10 files changed, 297 insertions, 217 deletions

diff --git a/models/repo/transfer.go b/models/repo/transfer.go
index 43e15b33bc..b669145d68 100644
--- a/models/repo/transfer.go
+++ b/models/repo/transfer.go
@@ -68,6 +68,7 @@ type RepoTransfer struct { //nolint
 	RecipientID int64
 	Recipient   *user_model.User `xorm:"-"`
 	RepoID      int64
+	Repo        *Repository `xorm:"-"`
 	TeamIDs     []int64
 	Teams       []*organization.Team `xorm:"-"`
 
@@ -79,48 +80,65 @@ func init() {
 	db.RegisterModel(new(RepoTransfer))
 }
 
-// LoadAttributes fetches the transfer recipient from the database
-func (r *RepoTransfer) LoadAttributes(ctx context.Context) error {
+func (r *RepoTransfer) LoadRecipient(ctx context.Context) error {
 	if r.Recipient == nil {
 		u, err := user_model.GetUserByID(ctx, r.RecipientID)
 		if err != nil {
 			return err
 		}
-
 		r.Recipient = u
 	}
 
-	if r.Recipient.IsOrganization() && len(r.TeamIDs) != len(r.Teams) {
-		for _, v := range r.TeamIDs {
-			team, err := organization.GetTeamByID(ctx, v)
-			if err != nil {
-				return err
-			}
+	return nil
+}
 
-			if team.OrgID != r.Recipient.ID {
-				return fmt.Errorf("team %d belongs not to org %d", v, r.Recipient.ID)
-			}
+func (r *RepoTransfer) LoadRepo(ctx context.Context) error {
+	if r.Repo == nil {
+		repo, err := GetRepositoryByID(ctx, r.RepoID)
+		if err != nil {
+			return err
+		}
+		r.Repo = repo
+	}
+
+	return nil
+}
+
+// LoadAttributes fetches the transfer recipient from the database
+func (r *RepoTransfer) LoadAttributes(ctx context.Context) error {
+	if err := r.LoadRecipient(ctx); err != nil {
+		return err
+	}
 
+	if r.Recipient.IsOrganization() && r.Teams == nil {
+		teamsMap, err := organization.GetTeamsByIDs(ctx, r.TeamIDs)
+		if err != nil {
+			return err
+		}
+		for _, team := range teamsMap {
 			r.Teams = append(r.Teams, team)
 		}
 	}
 
+	if err := r.LoadRepo(ctx); err != nil {
+		return err
+	}
+
 	if r.Doer == nil {
 		u, err := user_model.GetUserByID(ctx, r.DoerID)
 		if err != nil {
 			return err
 		}
-
 		r.Doer = u
 	}
 
 	return nil
 }
 
-// CanUserAcceptTransfer checks if the user has the rights to accept/decline a repo transfer.
+// CanUserAcceptOrRejectTransfer checks if the user has the rights to accept/decline a repo transfer.
 // For user, it checks if it's himself
 // For organizations, it checks if the user is able to create repos
-func (r *RepoTransfer) CanUserAcceptTransfer(ctx context.Context, u *user_model.User) bool {
+func (r *RepoTransfer) CanUserAcceptOrRejectTransfer(ctx context.Context, u *user_model.User) bool {
 	if err := r.LoadAttributes(ctx); err != nil {
 		log.Error("LoadAttributes: %v", err)
 		return false
@@ -166,6 +184,10 @@ func GetPendingRepositoryTransfers(ctx context.Context, opts *PendingRepositoryT
 		Find(&transfers)
 }
 
+func IsRepositoryTransferExist(ctx context.Context, repoID int64) (bool, error) {
+	return db.GetEngine(ctx).Where("repo_id = ?", repoID).Exist(new(RepoTransfer))
+}
+
 // GetPendingRepositoryTransfer fetches the most recent and ongoing transfer
 // process for the repository
 func GetPendingRepositoryTransfer(ctx context.Context, repo *Repository) (*RepoTransfer, error) {
@@ -206,11 +228,26 @@ func CreatePendingRepositoryTransfer(ctx context.Context, doer, newOwner *user_m
 			return err
 		}
 
+		if _, err := user_model.GetUserByID(ctx, newOwner.ID); err != nil {
+			return err
+		}
+
 		// Make sure repo is ready to transfer
 		if err := TestRepositoryReadyForTransfer(repo.Status); err != nil {
 			return err
 		}
 
+		exist, err := IsRepositoryTransferExist(ctx, repo.ID)
+		if err != nil {
+			return err
+		}
+		if exist {
+			return ErrRepoTransferInProgress{
+				Uname: repo.Owner.LowerName,
+				Name:  repo.Name,
+			}
+		}
+
 		repo.Status = RepositoryPendingTransfer
 		if err := UpdateRepositoryCols(ctx, repo, "status"); err != nil {
 			return err
diff --git a/routers/api/v1/repo/transfer.go b/routers/api/v1/repo/transfer.go
index b2090cac41..bb666f6487 100644
--- a/routers/api/v1/repo/transfer.go
+++ b/routers/api/v1/repo/transfer.go
@@ -15,6 +15,7 @@ import (
 	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/log"
 	api "code.gitea.io/gitea/modules/structs"
+	"code.gitea.io/gitea/modules/util"
 	"code.gitea.io/gitea/modules/web"
 	"code.gitea.io/gitea/services/context"
 	"code.gitea.io/gitea/services/convert"
@@ -161,12 +162,16 @@ func AcceptTransfer(ctx *context.APIContext) {
 	//   "404":
 	//     "$ref": "#/responses/notFound"
 
-	err := acceptOrRejectRepoTransfer(ctx, true)
-	if ctx.Written() {
-		return
-	}
+	err := repo_service.AcceptTransferOwnership(ctx, ctx.Repo.Repository, ctx.Doer)
 	if err != nil {
-		ctx.Error(http.StatusInternalServerError, "acceptOrRejectRepoTransfer", err)
+		switch {
+		case repo_model.IsErrNoPendingTransfer(err):
+			ctx.Error(http.StatusNotFound, "AcceptTransferOwnership", err)
+		case errors.Is(err, util.ErrPermissionDenied):
+			ctx.Error(http.StatusForbidden, "AcceptTransferOwnership", err)
+		default:
+			ctx.Error(http.StatusInternalServerError, "AcceptTransferOwnership", err)
+		}
 		return
 	}
 
@@ -199,40 +204,18 @@ func RejectTransfer(ctx *context.APIContext) {
 	//   "404":
 	//     "$ref": "#/responses/notFound"
 
-	err := acceptOrRejectRepoTransfer(ctx, false)
-	if ctx.Written() {
-		return
-	}
+	err := repo_service.RejectRepositoryTransfer(ctx, ctx.Repo.Repository, ctx.Doer)
 	if err != nil {
-		ctx.Error(http.StatusInternalServerError, "acceptOrRejectRepoTransfer", err)
+		switch {
+		case repo_model.IsErrNoPendingTransfer(err):
+			ctx.Error(http.StatusNotFound, "RejectRepositoryTransfer", err)
+		case errors.Is(err, util.ErrPermissionDenied):
+			ctx.Error(http.StatusForbidden, "RejectRepositoryTransfer", err)
+		default:
+			ctx.Error(http.StatusInternalServerError, "RejectRepositoryTransfer", err)
+		}
 		return
 	}
 
 	ctx.JSON(http.StatusOK, convert.ToRepo(ctx, ctx.Repo.Repository, ctx.Repo.Permission))
 }
-
-func acceptOrRejectRepoTransfer(ctx *context.APIContext, accept bool) error {
-	repoTransfer, err := repo_model.GetPendingRepositoryTransfer(ctx, ctx.Repo.Repository)
-	if err != nil {
-		if repo_model.IsErrNoPendingTransfer(err) {
-			ctx.NotFound()
-			return nil
-		}
-		return err
-	}
-
-	if err := repoTransfer.LoadAttributes(ctx); err != nil {
-		return err
-	}
-
-	if !repoTransfer.CanUserAcceptTransfer(ctx, ctx.Doer) {
-		ctx.Error(http.StatusForbidden, "CanUserAcceptTransfer", nil)
-		return fmt.Errorf("user does not have permissions to do this")
-	}
-
-	if accept {
-		return repo_service.TransferOwnership(ctx, repoTransfer.Doer, repoTransfer.Recipient, ctx.Repo.Repository, repoTransfer.Teams)
-	}
-
-	return repo_service.CancelRepositoryTransfer(ctx, ctx.Repo.Repository)
-}
diff --git a/routers/web/repo/repo.go b/routers/web/repo/repo.go
index 6c2bc74e69..8ebf5bcf39 100644
--- a/routers/web/repo/repo.go
+++ b/routers/web/repo/repo.go
@@ -309,6 +309,36 @@ const (
 	tplStarUnstar   templates.TplName = "repo/star_unstar"
 )
 
+func acceptTransfer(ctx *context.Context) {
+	err := repo_service.AcceptTransferOwnership(ctx, ctx.Repo.Repository, ctx.Doer)
+	if err == nil {
+		ctx.Flash.Success(ctx.Tr("repo.settings.transfer.success"))
+		ctx.Redirect(ctx.Repo.Repository.Link())
+		return
+	}
+	handleActionError(ctx, err)
+}
+
+func rejectTransfer(ctx *context.Context) {
+	err := repo_service.RejectRepositoryTransfer(ctx, ctx.Repo.Repository, ctx.Doer)
+	if err == nil {
+		ctx.Flash.Success(ctx.Tr("repo.settings.transfer.rejected"))
+		ctx.Redirect(ctx.Repo.Repository.Link())
+		return
+	}
+	handleActionError(ctx, err)
+}
+
+func handleActionError(ctx *context.Context, err error) {
+	if errors.Is(err, user_model.ErrBlockedUser) {
+		ctx.Flash.Error(ctx.Tr("repo.action.blocked_user"))
+	} else if errors.Is(err, util.ErrPermissionDenied) {
+		ctx.Error(http.StatusNotFound)
+	} else {
+		ctx.ServerError(fmt.Sprintf("Action (%s)", ctx.PathParam("action")), err)
+	}
+}
+
 // Action response for actions to a repository
 func Action(ctx *context.Context) {
 	var err error
@@ -322,9 +352,11 @@ func Action(ctx *context.Context) {
 	case "unstar":
 		err = repo_model.StarRepo(ctx, ctx.Doer, ctx.Repo.Repository, false)
 	case "accept_transfer":
-		err = acceptOrRejectRepoTransfer(ctx, true)
+		acceptTransfer(ctx)
+		return
 	case "reject_transfer":
-		err = acceptOrRejectRepoTransfer(ctx, false)
+		rejectTransfer(ctx)
+		return
 	case "desc": // FIXME: this is not used
 		if !ctx.Repo.IsOwner() {
 			ctx.Error(http.StatusNotFound)
@@ -337,12 +369,8 @@ func Action(ctx *context.Context) {
 	}
 
 	if err != nil {
-		if errors.Is(err, user_model.ErrBlockedUser) {
-			ctx.Flash.Error(ctx.Tr("repo.action.blocked_user"))
-		} else {
-			ctx.ServerError(fmt.Sprintf("Action (%s)", ctx.PathParam("action")), err)
-			return
-		}
+		handleActionError(ctx, err)
+		return
 	}
 
 	switch ctx.PathParam("action") {
@@ -377,41 +405,6 @@ func Action(ctx *context.Context) {
 	ctx.RedirectToCurrentSite(ctx.FormString("redirect_to"), ctx.Repo.RepoLink)
 }
 
-func acceptOrRejectRepoTransfer(ctx *context.Context, accept bool) error {
-	repoTransfer, err := repo_model.GetPendingRepositoryTransfer(ctx, ctx.Repo.Repository)
-	if err != nil {
-		return err
-	}
-
-	if err := repoTransfer.LoadAttributes(ctx); err != nil {
-		return err
-	}
-
-	if !repoTransfer.CanUserAcceptTransfer(ctx, ctx.Doer) {
-		return errors.New("user does not have enough permissions")
-	}
-
-	if accept {
-		if ctx.Repo.GitRepo != nil {
-			ctx.Repo.GitRepo.Close()
-			ctx.Repo.GitRepo = nil
-		}
-
-		if err := repo_service.TransferOwnership(ctx, repoTransfer.Doer, repoTransfer.Recipient, ctx.Repo.Repository, repoTransfer.Teams); err != nil {
-			return err
-		}
-		ctx.Flash.Success(ctx.Tr("repo.settings.transfer.success"))
-	} else {
-		if err := repo_service.CancelRepositoryTransfer(ctx, ctx.Repo.Repository); err != nil {
-			return err
-		}
-		ctx.Flash.Success(ctx.Tr("repo.settings.transfer.rejected"))
-	}
-
-	ctx.Redirect(ctx.Repo.Repository.Link())
-	return nil
-}
-
 // RedirectDownload return a file based on the following infos:
 func RedirectDownload(ctx *context.Context) {
 	var (
diff --git a/routers/web/repo/setting/setting.go b/routers/web/repo/setting/setting.go
index 5b34fc60da..be37d0a9c4 100644
--- a/routers/web/repo/setting/setting.go
+++ b/routers/web/repo/setting/setting.go
@@ -832,16 +832,10 @@ func SettingsPost(ctx *context.Context) {
 			} else {
 				ctx.ServerError("GetPendingRepositoryTransfer", err)
 			}
-
-			return
-		}
-
-		if err := repoTransfer.LoadAttributes(ctx); err != nil {
-			ctx.ServerError("LoadRecipient", err)
 			return
 		}
 
-		if err := repo_service.CancelRepositoryTransfer(ctx, ctx.Repo.Repository); err != nil {
+		if err := repo_service.CancelRepositoryTransfer(ctx, repoTransfer, ctx.Doer); err != nil {
 			ctx.ServerError("CancelRepositoryTransfer", err)
 			return
 		}
diff --git a/services/context/repo.go b/services/context/repo.go
index 32f8aaed2e..b0cfd78cf5 100644
--- a/services/context/repo.go
+++ b/services/context/repo.go
@@ -653,7 +653,7 @@ func RepoAssignment(ctx *Context) {
 
 		ctx.Data["RepoTransfer"] = repoTransfer
 		if ctx.Doer != nil {
-			ctx.Data["CanUserAcceptTransfer"] = repoTransfer.CanUserAcceptTransfer(ctx, ctx.Doer)
+			ctx.Data["CanUserAcceptOrRejectTransfer"] = repoTransfer.CanUserAcceptOrRejectTransfer(ctx, ctx.Doer)
 		}
 	}
 
diff --git a/services/notify/notify.go b/services/notify/notify.go
index 3b5f24340b..c97d0fcbaf 100644
--- a/services/notify/notify.go
+++ b/services/notify/notify.go
@@ -272,9 +272,9 @@ func MigrateRepository(ctx context.Context, doer, u *user_model.User, repo *repo
 }
 
 // TransferRepository notifies create repository to notifiers
-func TransferRepository(ctx context.Context, doer *user_model.User, repo *repo_model.Repository, newOwnerName string) {
+func TransferRepository(ctx context.Context, doer *user_model.User, repo *repo_model.Repository, oldOwnerName string) {
 	for _, notifier := range notifiers {
-		notifier.TransferRepository(ctx, doer, repo, newOwnerName)
+		notifier.TransferRepository(ctx, doer, repo, oldOwnerName)
 	}
 }
 
diff --git a/services/repository/transfer.go b/services/repository/transfer.go
index 9ef28ddeb9..bd3bf326b4 100644
--- a/services/repository/transfer.go
+++ b/services/repository/transfer.go
@@ -27,19 +27,8 @@ func getRepoWorkingLockKey(repoID int64) string {
 	return fmt.Sprintf("repo_working_%d", repoID)
 }
 
-// TransferOwnership transfers all corresponding setting from old user to new one.
-func TransferOwnership(ctx context.Context, doer, newOwner *user_model.User, repo *repo_model.Repository, teams []*organization.Team) error {
-	if err := repo.LoadOwner(ctx); err != nil {
-		return err
-	}
-	for _, team := range teams {
-		if newOwner.ID != team.OrgID {
-			return fmt.Errorf("team %d does not belong to organization", team.ID)
-		}
-	}
-
-	oldOwner := repo.Owner
-
+// AcceptTransferOwnership transfers all corresponding setting from old user to new one.
+func AcceptTransferOwnership(ctx context.Context, repo *repo_model.Repository, doer *user_model.User) error {
 	releaser, err := globallock.Lock(ctx, getRepoWorkingLockKey(repo.ID))
 	if err != nil {
 		log.Error("lock.Lock(): %v", err)
@@ -47,29 +36,44 @@ func TransferOwnership(ctx context.Context, doer, newOwner *user_model.User, rep
 	}
 	defer releaser()
 
-	if err := transferOwnership(ctx, doer, newOwner.Name, repo); err != nil {
-		return err
-	}
-	releaser()
-
-	newRepo, err := repo_model.GetRepositoryByID(ctx, repo.ID)
+	repoTransfer, err := repo_model.GetPendingRepositoryTransfer(ctx, repo)
 	if err != nil {
 		return err
 	}
 
-	for _, team := range teams {
-		if err := addRepositoryToTeam(ctx, team, newRepo); err != nil {
+	oldOwnerName := repo.OwnerName
+
+	if err := db.WithTx(ctx, func(ctx context.Context) error {
+		if err := repoTransfer.LoadAttributes(ctx); err != nil {
+			return err
+		}
+
+		if !repoTransfer.CanUserAcceptOrRejectTransfer(ctx, doer) {
+			return util.ErrPermissionDenied
+		}
+
+		if err := repo.LoadOwner(ctx); err != nil {
 			return err
 		}
+		for _, team := range repoTransfer.Teams {
+			if repoTransfer.Recipient.ID != team.OrgID {
+				return fmt.Errorf("team %d does not belong to organization", team.ID)
+			}
+		}
+
+		return transferOwnership(ctx, repoTransfer.Doer, repoTransfer.Recipient.Name, repo, repoTransfer.Teams)
+	}); err != nil {
+		return err
 	}
+	releaser()
 
-	notify_service.TransferRepository(ctx, doer, repo, oldOwner.Name)
+	notify_service.TransferRepository(ctx, doer, repo, oldOwnerName)
 
 	return nil
 }
 
 // transferOwnership transfers all corresponding repository items from old user to new one.
-func transferOwnership(ctx context.Context, doer *user_model.User, newOwnerName string, repo *repo_model.Repository) (err error) {
+func transferOwnership(ctx context.Context, doer *user_model.User, newOwnerName string, repo *repo_model.Repository, teams []*organization.Team) (err error) {
 	repoRenamed := false
 	wikiRenamed := false
 	oldOwnerName := doer.Name
@@ -138,7 +142,7 @@ func transferOwnership(ctx context.Context, doer *user_model.User, newOwnerName
 	repo.OwnerName = newOwner.Name
 
 	// Update repository.
-	if _, err := sess.ID(repo.ID).Update(repo); err != nil {
+	if err := repo_model.UpdateRepositoryCols(ctx, repo, "owner_id", "owner_name"); err != nil {
 		return fmt.Errorf("update owner: %w", err)
 	}
 
@@ -174,15 +178,13 @@ func transferOwnership(ctx context.Context, doer *user_model.User, newOwnerName
 		collaboration.UserID = 0
 	}
 
-	// Remove old team-repository relations.
 	if oldOwner.IsOrganization() {
+		// Remove old team-repository relations.
 		if err := organization.RemoveOrgRepo(ctx, oldOwner.ID, repo.ID); err != nil {
 			return fmt.Errorf("removeOrgRepo: %w", err)
 		}
-	}
 
-	// Remove project's issues that belong to old organization's projects
-	if oldOwner.IsOrganization() {
+		// Remove project's issues that belong to old organization's projects
 		projects, err := project_model.GetAllProjectsIDsByOwnerIDAndType(ctx, oldOwner.ID, project_model.TypeOrganization)
 		if err != nil {
 			return fmt.Errorf("Unable to find old org projects: %w", err)
@@ -225,15 +227,13 @@ func transferOwnership(ctx context.Context, doer *user_model.User, newOwnerName
 		return fmt.Errorf("watchRepo: %w", err)
 	}
 
-	// Remove watch for organization.
 	if oldOwner.IsOrganization() {
+		// Remove watch for organization.
 		if err := repo_model.WatchRepo(ctx, oldOwner, repo, false); err != nil {
 			return fmt.Errorf("watchRepo [false]: %w", err)
 		}
-	}
 
-	// Delete labels that belong to the old organization and comments that added these labels
-	if oldOwner.IsOrganization() {
+		// Delete labels that belong to the old organization and comments that added these labels
 		if _, err := sess.Exec(`DELETE FROM issue_label WHERE issue_label.id IN (
 			SELECT il_too.id FROM (
 				SELECT il_too_too.id
@@ -261,7 +261,6 @@ func transferOwnership(ctx context.Context, doer *user_model.User, newOwnerName
 
 	// Rename remote repository to new path and delete local copy.
 	dir := user_model.UserPath(newOwner.Name)
-
 	if err := os.MkdirAll(dir, os.ModePerm); err != nil {
 		return fmt.Errorf("Failed to create dir %s: %w", dir, err)
 	}
@@ -273,7 +272,6 @@ func transferOwnership(ctx context.Context, doer *user_model.User, newOwnerName
 
 	// Rename remote wiki repository to new path and delete local copy.
 	wikiPath := repo_model.WikiPath(oldOwner.Name, repo.Name)
-
 	if isExist, err := util.IsExist(wikiPath); err != nil {
 		log.Error("Unable to check if %s exists. Error: %v", wikiPath, err)
 		return err
@@ -301,6 +299,17 @@ func transferOwnership(ctx context.Context, doer *user_model.User, newOwnerName
 		return fmt.Errorf("repo_model.NewRedirect: %w", err)
 	}
 
+	newRepo, err := repo_model.GetRepositoryByID(ctx, repo.ID)
+	if err != nil {
+		return err
+	}
+
+	for _, team := range teams {
+		if err := addRepositoryToTeam(ctx, team, newRepo); err != nil {
+			return err
+		}
+	}
+
 	return committer.Commit()
 }
 
@@ -343,17 +352,9 @@ func changeRepositoryName(ctx context.Context, repo *repo_model.Repository, newR
 		}
 	}
 
-	ctx, committer, err := db.TxContext(ctx)
-	if err != nil {
-		return err
-	}
-	defer committer.Close()
-
-	if err := repo_model.NewRedirect(ctx, repo.Owner.ID, repo.ID, oldRepoName, newRepoName); err != nil {
-		return err
-	}
-
-	return committer.Commit()
+	return db.WithTx(ctx, func(ctx context.Context) error {
+		return repo_model.NewRedirect(ctx, repo.Owner.ID, repo.ID, oldRepoName, newRepoName)
+	})
 }
 
 // ChangeRepositoryName changes all corresponding setting from old repository name to new one.
@@ -387,70 +388,142 @@ func ChangeRepositoryName(ctx context.Context, doer *user_model.User, repo *repo
 // StartRepositoryTransfer transfer a repo from one owner to a new one.
 // it make repository into pending transfer state, if doer can not create repo for new owner.
 func StartRepositoryTransfer(ctx context.Context, doer, newOwner *user_model.User, repo *repo_model.Repository, teams []*organization.Team) error {
+	releaser, err := globallock.Lock(ctx, getRepoWorkingLockKey(repo.ID))
+	if err != nil {
+		return fmt.Errorf("lock.Lock: %w", err)
+	}
+	defer releaser()
+
 	if err := repo_model.TestRepositoryReadyForTransfer(repo.Status); err != nil {
 		return err
 	}
 
-	// Admin is always allowed to transfer || user transfer repo back to his account
-	if doer.IsAdmin || doer.ID == newOwner.ID {
-		return TransferOwnership(ctx, doer, newOwner, repo, teams)
-	}
+	var isDirectTransfer bool
+	oldOwnerName := repo.OwnerName
 
-	if user_model.IsUserBlockedBy(ctx, doer, newOwner.ID) {
-		return user_model.ErrBlockedUser
-	}
+	if err := db.WithTx(ctx, func(ctx context.Context) error {
+		// Admin is always allowed to transfer || user transfer repo back to his account,
+		// then it will transfer directly without acceptance.
+		if doer.IsAdmin || doer.ID == newOwner.ID {
+			isDirectTransfer = true
+			return transferOwnership(ctx, doer, newOwner.Name, repo, teams)
+		}
 
-	// If new owner is an org and user can create repos he can transfer directly too
-	if newOwner.IsOrganization() {
-		allowed, err := organization.CanCreateOrgRepo(ctx, newOwner.ID, doer.ID)
-		if err != nil {
-			return err
+		if user_model.IsUserBlockedBy(ctx, doer, newOwner.ID) {
+			return user_model.ErrBlockedUser
 		}
-		if allowed {
-			return TransferOwnership(ctx, doer, newOwner, repo, teams)
+
+		// If new owner is an org and user can create repos he can transfer directly too
+		if newOwner.IsOrganization() {
+			allowed, err := organization.CanCreateOrgRepo(ctx, newOwner.ID, doer.ID)
+			if err != nil {
+				return err
+			}
+			if allowed {
+				isDirectTransfer = true
+				return transferOwnership(ctx, doer, newOwner.Name, repo, teams)
+			}
 		}
-	}
 
-	// In case the new owner would not have sufficient access to the repo, give access rights for read
-	hasAccess, err := access_model.HasAnyUnitAccess(ctx, newOwner.ID, repo)
-	if err != nil {
-		return err
-	}
-	if !hasAccess {
-		if err := AddOrUpdateCollaborator(ctx, repo, newOwner, perm.AccessModeRead); err != nil {
+		// In case the new owner would not have sufficient access to the repo, give access rights for read
+		hasAccess, err := access_model.HasAnyUnitAccess(ctx, newOwner.ID, repo)
+		if err != nil {
 			return err
 		}
-	}
+		if !hasAccess {
+			if err := AddOrUpdateCollaborator(ctx, repo, newOwner, perm.AccessModeRead); err != nil {
+				return err
+			}
+		}
 
-	// Make repo as pending for transfer
-	repo.Status = repo_model.RepositoryPendingTransfer
-	if err := repo_model.CreatePendingRepositoryTransfer(ctx, doer, newOwner, repo.ID, teams); err != nil {
+		// Make repo as pending for transfer
+		repo.Status = repo_model.RepositoryPendingTransfer
+		return repo_model.CreatePendingRepositoryTransfer(ctx, doer, newOwner, repo.ID, teams)
+	}); err != nil {
 		return err
 	}
 
-	// notify users who are able to accept / reject transfer
-	notify_service.RepoPendingTransfer(ctx, doer, newOwner, repo)
+	if isDirectTransfer {
+		notify_service.TransferRepository(ctx, doer, repo, oldOwnerName)
+	} else {
+		// notify users who are able to accept / reject transfer
+		notify_service.RepoPendingTransfer(ctx, doer, newOwner, repo)
+	}
 
 	return nil
 }
 
-// CancelRepositoryTransfer marks the repository as ready and remove pending transfer entry,
+// RejectRepositoryTransfer marks the repository as ready and remove pending transfer entry,
 // thus cancel the transfer process.
-func CancelRepositoryTransfer(ctx context.Context, repo *repo_model.Repository) error {
-	ctx, committer, err := db.TxContext(ctx)
-	if err != nil {
-		return err
+// The accepter can reject the transfer.
+func RejectRepositoryTransfer(ctx context.Context, repo *repo_model.Repository, doer *user_model.User) error {
+	return db.WithTx(ctx, func(ctx context.Context) error {
+		repoTransfer, err := repo_model.GetPendingRepositoryTransfer(ctx, repo)
+		if err != nil {
+			return err
+		}
+
+		if err := repoTransfer.LoadAttributes(ctx); err != nil {
+			return err
+		}
+
+		if !repoTransfer.CanUserAcceptOrRejectTransfer(ctx, doer) {
+			return util.ErrPermissionDenied
+		}
+
+		repo.Status = repo_model.RepositoryReady
+		if err := repo_model.UpdateRepositoryCols(ctx, repo, "status"); err != nil {
+			return err
+		}
+
+		return repo_model.DeleteRepositoryTransfer(ctx, repo.ID)
+	})
+}
+
+func canUserCancelTransfer(ctx context.Context, r *repo_model.RepoTransfer, u *user_model.User) bool {
+	if u.IsAdmin || u.ID == r.DoerID {
+		return true
 	}
-	defer committer.Close()
 
-	repo.Status = repo_model.RepositoryReady
-	if err := repo_model.UpdateRepositoryCols(ctx, repo, "status"); err != nil {
-		return err
+	if err := r.LoadAttributes(ctx); err != nil {
+		log.Error("LoadAttributes: %v", err)
+		return false
 	}
 
-	if err := repo_model.DeleteRepositoryTransfer(ctx, repo.ID); err != nil {
-		return err
+	if err := r.Repo.LoadOwner(ctx); err != nil {
+		log.Error("LoadOwner: %v", err)
+		return false
 	}
 
-	return committer.Commit()
+	if !r.Repo.Owner.IsOrganization() {
+		return r.Repo.OwnerID == u.ID
+	}
+
+	perm, err := access_model.GetUserRepoPermission(ctx, r.Repo, u)
+	if err != nil {
+		log.Error("GetUserRepoPermission: %v", err)
+		return false
+	}
+	return perm.IsOwner()
+}
+
+// CancelRepositoryTransfer cancels the repository transfer process. The sender or
+// the users who have admin permission of the original repository can cancel the transfer
+func CancelRepositoryTransfer(ctx context.Context, repoTransfer *repo_model.RepoTransfer, doer *user_model.User) error {
+	return db.WithTx(ctx, func(ctx context.Context) error {
+		if err := repoTransfer.LoadAttributes(ctx); err != nil {
+			return err
+		}
+
+		if !canUserCancelTransfer(ctx, repoTransfer, doer) {
+			return util.ErrPermissionDenied
+		}
+
+		repoTransfer.Repo.Status = repo_model.RepositoryReady
+		if err := repo_model.UpdateRepositoryCols(ctx, repoTransfer.Repo, "status"); err != nil {
+			return err
+		}
+
+		return repo_model.DeleteRepositoryTransfer(ctx, repoTransfer.RepoID)
+	})
 }
diff --git a/services/repository/transfer_test.go b/services/repository/transfer_test.go
index 91722fb8ae..16a8fb6e1e 100644
--- a/services/repository/transfer_test.go
+++ b/services/repository/transfer_test.go
@@ -34,23 +34,26 @@ func TestTransferOwnership(t *testing.T) {
 
 	assert.NoError(t, unittest.PrepareTestDatabase())
 
-	doer := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+	doer := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1})
 	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 3})
-	repo.Owner = unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: repo.OwnerID})
-	assert.NoError(t, TransferOwnership(db.DefaultContext, doer, doer, repo, nil))
+	assert.NoError(t, repo.LoadOwner(db.DefaultContext))
+	repoTransfer := unittest.AssertExistsAndLoadBean(t, &repo_model.RepoTransfer{ID: 1})
+	assert.NoError(t, repoTransfer.LoadAttributes(db.DefaultContext))
+	assert.NoError(t, AcceptTransferOwnership(db.DefaultContext, repo, doer))
 
 	transferredRepo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 3})
-	assert.EqualValues(t, 2, transferredRepo.OwnerID)
+	assert.EqualValues(t, 1, transferredRepo.OwnerID) // repo_transfer.yml id=1
+	unittest.AssertNotExistsBean(t, &repo_model.RepoTransfer{ID: 1})
 
 	exist, err := util.IsExist(repo_model.RepoPath("org3", "repo3"))
 	assert.NoError(t, err)
 	assert.False(t, exist)
-	exist, err = util.IsExist(repo_model.RepoPath("user2", "repo3"))
+	exist, err = util.IsExist(repo_model.RepoPath("user1", "repo3"))
 	assert.NoError(t, err)
 	assert.True(t, exist)
 	unittest.AssertExistsAndLoadBean(t, &activities_model.Action{
 		OpType:    activities_model.ActionTransferRepo,
-		ActUserID: 2,
+		ActUserID: 1,
 		RepoID:    3,
 		Content:   "org3/repo3",
 	})
@@ -61,10 +64,10 @@ func TestTransferOwnership(t *testing.T) {
 func TestStartRepositoryTransferSetPermission(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
 
-	doer := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 3})
+	doer := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
 	recipient := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 5})
-	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 3})
-	repo.Owner = unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: repo.OwnerID})
+	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 2})
+	assert.NoError(t, repo.LoadOwner(db.DefaultContext))
 
 	hasAccess, err := access_model.HasAnyUnitAccess(db.DefaultContext, recipient.ID, repo)
 	assert.NoError(t, err)
@@ -82,7 +85,7 @@ func TestStartRepositoryTransferSetPermission(t *testing.T) {
 func TestRepositoryTransfer(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
 
-	doer := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 3})
+	doer := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1})
 	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 3})
 
 	transfer, err := repo_model.GetPendingRepositoryTransfer(db.DefaultContext, repo)
@@ -90,7 +93,7 @@ func TestRepositoryTransfer(t *testing.T) {
 	assert.NotNil(t, transfer)
 
 	// Cancel transfer
-	assert.NoError(t, CancelRepositoryTransfer(db.DefaultContext, repo))
+	assert.NoError(t, CancelRepositoryTransfer(db.DefaultContext, transfer, doer))
 
 	transfer, err = repo_model.GetPendingRepositoryTransfer(db.DefaultContext, repo)
 	assert.Error(t, err)
@@ -113,10 +116,12 @@ func TestRepositoryTransfer(t *testing.T) {
 	assert.Error(t, err)
 	assert.True(t, repo_model.IsErrRepoTransferInProgress(err))
 
-	// Unknown user
-	err = repo_model.CreatePendingRepositoryTransfer(db.DefaultContext, doer, &user_model.User{ID: 1000, LowerName: "user1000"}, repo.ID, nil)
+	repo2 := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 2})
+	// Unknown user, transfer non-existent transfer repo id = 2
+	err = repo_model.CreatePendingRepositoryTransfer(db.DefaultContext, doer, &user_model.User{ID: 1000, LowerName: "user1000"}, repo2.ID, nil)
 	assert.Error(t, err)
 
-	// Cancel transfer
-	assert.NoError(t, CancelRepositoryTransfer(db.DefaultContext, repo))
+	// Reject transfer
+	err = RejectRepositoryTransfer(db.DefaultContext, repo2, doer)
+	assert.True(t, repo_model.IsErrNoPendingTransfer(err))
 }
diff --git a/services/user/block.go b/services/user/block.go
index c24ce5273c..7727780dfc 100644
--- a/services/user/block.go
+++ b/services/user/block.go
@@ -117,10 +117,10 @@ func BlockUser(ctx context.Context, doer, blocker, blockee *user_model.User, not
 		}
 
 		// cancel each other repository transfers
-		if err := cancelRepositoryTransfers(ctx, blocker, blockee); err != nil {
+		if err := cancelRepositoryTransfers(ctx, doer, blocker, blockee); err != nil {
 			return err
 		}
-		if err := cancelRepositoryTransfers(ctx, blockee, blocker); err != nil {
+		if err := cancelRepositoryTransfers(ctx, doer, blockee, blocker); err != nil {
 			return err
 		}
 
@@ -192,7 +192,7 @@ func unwatchRepos(ctx context.Context, watcher, repoOwner *user_model.User) erro
 	}
 }
 
-func cancelRepositoryTransfers(ctx context.Context, sender, recipient *user_model.User) error {
+func cancelRepositoryTransfers(ctx context.Context, doer, sender, recipient *user_model.User) error {
 	transfers, err := repo_model.GetPendingRepositoryTransfers(ctx, &repo_model.PendingRepositoryTransferOptions{
 		SenderID:    sender.ID,
 		RecipientID: recipient.ID,
@@ -202,12 +202,7 @@ func cancelRepositoryTransfers(ctx context.Context, sender, recipient *user_mode
 	}
 
 	for _, transfer := range transfers {
-		repo, err := repo_model.GetRepositoryByID(ctx, transfer.RepoID)
-		if err != nil {
-			return err
-		}
-
-		if err := repo_service.CancelRepositoryTransfer(ctx, repo); err != nil {
+		if err := repo_service.CancelRepositoryTransfer(ctx, transfer, doer); err != nil {
 			return err
 		}
 	}
diff --git a/templates/repo/header.tmpl b/templates/repo/header.tmpl
index 3e7214f48c..8c2a0da8d0 100644
--- a/templates/repo/header.tmpl
+++ b/templates/repo/header.tmpl
@@ -39,16 +39,16 @@
 					{{if $.RepoTransfer}}
 						<form method="post" action="{{$.RepoLink}}/action/accept_transfer?redirect_to={{$.RepoLink}}">
 							{{$.CsrfTokenHtml}}
-							<div data-tooltip-content="{{if $.CanUserAcceptTransfer}}{{ctx.Locale.Tr "repo.transfer.accept_desc" $.RepoTransfer.Recipient.DisplayName}}{{else}}{{ctx.Locale.Tr "repo.transfer.no_permission_to_accept"}}{{end}}">
-								<button type="submit" class="ui basic button {{if $.CanUserAcceptTransfer}}primary {{end}} ok small"{{if not $.CanUserAcceptTransfer}} disabled{{end}}>
+							<div data-tooltip-content="{{if $.CanUserAcceptOrRejectTransfer}}{{ctx.Locale.Tr "repo.transfer.accept_desc" $.RepoTransfer.Recipient.DisplayName}}{{else}}{{ctx.Locale.Tr "repo.transfer.no_permission_to_accept"}}{{end}}">
+								<button type="submit" class="ui basic button {{if $.CanUserAcceptOrRejectTransfer}}primary {{end}} ok small"{{if not $.CanUserAcceptOrRejectTransfer}} disabled{{end}}>
 									{{ctx.Locale.Tr "repo.transfer.accept"}}
 								</button>
 							</div>
 						</form>
 						<form method="post" action="{{$.RepoLink}}/action/reject_transfer?redirect_to={{$.RepoLink}}">
 							{{$.CsrfTokenHtml}}
-							<div data-tooltip-content="{{if $.CanUserAcceptTransfer}}{{ctx.Locale.Tr "repo.transfer.reject_desc" $.RepoTransfer.Recipient.DisplayName}}{{else}}{{ctx.Locale.Tr "repo.transfer.no_permission_to_reject"}}{{end}}">
-								<button type="submit" class="ui basic button {{if $.CanUserAcceptTransfer}}red {{end}}ok small"{{if not $.CanUserAcceptTransfer}} disabled{{end}}>
+							<div data-tooltip-content="{{if $.CanUserAcceptOrRejectTransfer}}{{ctx.Locale.Tr "repo.transfer.reject_desc" $.RepoTransfer.Recipient.DisplayName}}{{else}}{{ctx.Locale.Tr "repo.transfer.no_permission_to_reject"}}{{end}}">
+								<button type="submit" class="ui basic button {{if $.CanUserAcceptOrRejectTransfer}}red {{end}}ok small"{{if not $.CanUserAcceptOrRejectTransfer}} disabled{{end}}>
 									{{ctx.Locale.Tr "repo.transfer.reject"}}
 								</button>
 							</div>