git_http_controller.rb

# This file should be identical in GitLab Community Edition and Enterprise Edition

class Projects::GitHttpController < Projects::GitHttpClientController
  # GET /foo/bar.git/info/refs?service=git-upload-pack (git pull)
  # GET /foo/bar.git/info/refs?service=git-receive-pack (git push)
  def info_refs
    if upload_pack? && upload_pack_allowed?
      render_ok
    elsif receive_pack? && receive_pack_allowed?
      render_ok
    elsif http_blocked?
      render_not_allowed
    else
      render_not_found
    end
  end

  # POST /foo/bar.git/git-upload-pack (git pull)
  def git_upload_pack
    if upload_pack? && upload_pack_allowed?
      render_ok
    else
      render_not_found
    end
  end

  # POST /foo/bar.git/git-receive-pack" (git push)
  def git_receive_pack
    if receive_pack? && receive_pack_allowed?
      render_ok
    else
      render_not_found
    end
  end

  private

  def download_request?
    upload_pack?
  end

  def upload_pack?
    git_command == 'git-upload-pack'
  end

  def receive_pack?
    git_command == 'git-receive-pack'
  end

  def git_command
    if action_name == 'info_refs'
      params[:service]
    else
      action_name.dasherize
    end
  end

  def render_ok
    render json: Gitlab::Workhorse.git_http_ok(repository, user)
  end

  def render_not_allowed
    render plain: download_access.message, status: :forbidden
  end

  def upload_pack_allowed?
    return false unless Gitlab.config.gitlab_shell.upload_pack

    if user
      download_access.allowed?
    else
      ci? || project.public?
    end
  end

  def access
    return @access if defined?(@access)

    @access = Gitlab::GitAccess.new(user, project, 'http')
  end

  def download_access
    return @download_access if defined?(@download_access)

    @download_access = access.check('git-upload-pack')
  end

  def http_blocked?
    !access.protocol_allowed?
  end

  def receive_pack_allowed?
    return false unless Gitlab.config.gitlab_shell.receive_pack

    # Skip user authorization on upload request.
    # It will be done by the pre-receive hook in the repository.
    user.present?
  end
end