1 files changed, 31 insertions, 0 deletions
diff --git a/modules/repository/fork.go b/modules/repository/fork.go
new file mode 100644
index 0000000000..c967d3b741
--- /dev/null
+++ b/modules/repository/fork.go
@@ -0,0 +1,31 @@
+// 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 repository
+
+import (
+	"code.gitea.io/gitea/models/organization"
+	repo_model "code.gitea.io/gitea/models/repo"
+	user_model "code.gitea.io/gitea/models/user"
+)
+
+// CanUserForkRepo returns true if specified user can fork repository.
+func CanUserForkRepo(user *user_model.User, repo *repo_model.Repository) (bool, error) {
+	if user == nil {
+		return false, nil
+	}
+	if repo.OwnerID != user.ID && !repo_model.HasForkedRepo(user.ID, repo.ID) {
+		return true, nil
+	}
+	ownedOrgs, err := organization.GetOrgsCanCreateRepoByUserID(user.ID)
+	if err != nil {
+		return false, err
+	}
+	for _, org := range ownedOrgs {
+		if repo.OwnerID != org.ID && !repo_model.HasForkedRepo(org.ID, repo.ID) {
+			return true, nil
+		}
+	}
+	return false, nil
+}