# Copyright (c) 2010-2011, Diaspora Inc. This file is
# licensed under the Affero General Public License version 3 or later. See
# the COPYRIGHT file.
module Rack
class InternetExplorerVersion
def initialize(app, options={})
@app = app
@options = options
end
def call(env)
if env["HTTP_USER_AGENT"] =~ /MSIE/ && ie_version(env["HTTP_USER_AGENT"]) < @options[:minimum]
html = <<-HTML
Diaspora doesn't support your version of Internet Explorer. Try Firefox, Chrome or Opera!
Diaspora doesn't support your version of Internet Explorer.
You can use one of these browsers (and many more):
HTML
return [200, {"Content-Type" => "text/html", "Content-Length" => html.size.to_s}, Rack::Response.new([html])]
end
@app.call(env)
end
def ie_version(ua_string)
ua_string.match(/MSIE ?(\S+)/)[1].to_f
end
end
end