Add new repository archive route

Repository archives are always named `<project>-<ref>-<sha>` even if
the ref is a commit. A consequence of always including the sha even
for tags is that packaging a release is more difficult because both
the ref and sha must be known by the packager.

- add `<project>/-/archive/<ref>/<filename>.<format>` route using the
`-` separator to prevent namespace collisions. If the filename is
`<project>-<ref>` or the ref is a sha, the sha will be omitted,
otherwise the default filename will be used.
- deprecate previous archive route `repository/<ref>/archive`

1 files changed, 16 insertions, 1 deletions

diff --git a/app/controllers/projects/repositories_controller.rb b/app/controllers/projects/repositories_controller.rb
index d5af0341d18..a6167e9dc6c 100644
--- a/app/controllers/projects/repositories_controller.rb
+++ b/app/controllers/projects/repositories_controller.rb
@@ -1,6 +1,9 @@
 class Projects::RepositoriesController < Projects::ApplicationController
+  include ExtractsPath
+
   # Authorize
   before_action :require_non_empty_project, except: :create
+  before_action :assign_archive_vars, only: :archive
   before_action :authorize_download_code!
   before_action :authorize_admin_project!, only: :create
 
@@ -11,9 +14,21 @@ class Projects::RepositoriesController < Projects::ApplicationController
   end
 
   def archive
-    send_git_archive @repository, ref: params[:ref], format: params[:format]
+    append_sha = params[:append_sha]
+
+    shortname = "#{@project.path}-#{@ref.tr('/', '-')}"
+    append_sha = false if @filename == shortname
+
+    send_git_archive @repository, ref: @ref, format: params[:format], append_sha: append_sha
   rescue => ex
     logger.error("#{self.class.name}: #{ex}")
     return git_not_found!
   end
+
+  def assign_archive_vars
+    @id = params[:id]
+    @ref, @filename = extract_ref(@id)
+  rescue InvalidPathError
+    render_404
+  end
 end