# A dumb middleware that returns a Go HTML document if the go-get=1 query string
# is used irrespective if the namespace/project exists
module Gitlab
module Middleware
class Go
def initialize(app)
@app = app
end
def call(env)
request = Rack::Request.new(env)
if go_request?(request)
render_go_doc(request)
else
@app.call(env)
end
end
private
def render_go_doc(request)
body = go_body(request)
response = Rack::Response.new(body, 200, { 'Content-Type' => 'text/html' })
response.finish
end
def go_request?(request)
request["go-get"].to_i == 1 && request.env["PATH_INFO"].present?
end
def go_body(request)
base_url = Gitlab.config.gitlab.url
# Go subpackages may be in the form of namespace/project/path1/path2/../pathN
# We can just ignore the paths and leave the namespace/project
path_info = request.env["PATH_INFO"]
path_info.sub!(/^\//, '')
project_path = path_info.split('/').first(2).join('/')
request_url = URI.join(base_url, project_path)
domain_path = strip_url(request_url.to_s)
"\n"
end
def strip_url(url)
url.gsub(/\Ahttps?:\/\//, '')
end
end
end
end