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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <!-- (...) --> | |
| <%= csrf_meta_tag unless response.cache_control[:public] %> | |
| <!-- (...) --> | |
| </head> | |
| <body> | |
| <!-- (...) --> | |
| <% unless response.cache_control[:public] %> | |
| <% flash.each do |name, msg| %> | |
| <%= content_tag :div, msg, id: "flash_#{name}" %> | |
| <% end %> | |
| <% end %> | |
| <!-- (...) --> | |
| </body> | |
| </html> |
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| require 'strip_empty_sessions' | |
| config.middleware.insert_before ActionDispatch::Cookies, StripEmptySessions, :key => "your_session_key", :path => "/", :httponly => true |
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| class ApplicationController < ActionController::Base | |
| include Lacquer::CacheUtils | |
| protect_from_forgery if: signed_in? | |
| skip_before_filter :verify_authenticity_token, unless: signed_in? | |
| before_filter do |controller| | |
| if signed_in? or request.xhr? | |
| controller.set_cache_ttl(0) | |
| end | |
| end | |
| protected | |
| def form_authenticity_token | |
| if signed_in? | |
| session[:_csrf_token] ||= SecureRandom.base64(32) | |
| end | |
| end | |
| end |
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| config.middleware.delete 'Rack::Cache' |
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| class SessionsController < ApplicationController | |
| def destroy | |
| request.env["cookie.logout"] = true | |
| end | |
| end |
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| class StripEmptySessions | |
| ENV_SESSION_KEY = "rack.session".freeze | |
| HTTP_SET_COOKIE = "Set-Cookie".freeze | |
| BOGUS_KEYS = [:session_id, :_csrf_token] | |
| def initialize(app, options = {}) | |
| @app = app | |
| @options = options | |
| end | |
| def call(env) | |
| status, headers, body = @app.call(env) | |
| session_data = env[ENV_SESSION_KEY] | |
| if env["cookie.logout"] | |
| cookie = build_cookie(@options[:key], { | |
| :value => 'x', | |
| :expires => -1.year.from_now.utc | |
| }.merge(@options)) | |
| case headers[HTTP_SET_COOKIE].class.name | |
| when 'NilClass' | |
| headers[HTTP_SET_COOKIE] = cookie | |
| when 'Array' | |
| headers[HTTP_SET_COOKIE] << cookie | |
| when 'String' | |
| headers[HTTP_SET_COOKIE] << "\n#{cookie}" | |
| end | |
| elsif (session_data.keys - BOGUS_KEYS).empty? | |
| case headers[HTTP_SET_COOKIE].class.name | |
| when 'Array' | |
| headers[HTTP_SET_COOKIE].reject! {|c| c.match(/^\n?#{@options[:key]}=/)} | |
| when 'String' | |
| headers[HTTP_SET_COOKIE].gsub!( /(^|\n)#{@options[:key]}=(.*)?(\n|$)/, "" ) | |
| end | |
| end | |
| [status, headers, body] | |
| end | |
| private | |
| # Copied from the cookie session middleware. | |
| def build_cookie(key, value) | |
| case value | |
| when Hash | |
| domain = "; domain=" + value[:domain] if value[:domain] | |
| path = "; path=" + value[:path] if value[:path] | |
| # According to RFC 2109, we need dashes here. | |
| # N.B.: cgi.rb uses spaces... | |
| expires = "; expires=" + value[:expires].clone.gmtime. | |
| strftime("%a, %d-%b-%Y %H:%M:%S GMT") if value[:expires] | |
| secure = "; secure" if value[:secure] | |
| httponly = "; HttpOnly" if value[:httponly] | |
| value = value[:value] | |
| end | |
| value = [value] unless Array === value | |
| Rack::Utils.escape(key) + "=" + | |
| value.map { |v| Rack::Utils.escape(v) }.join("&") + | |
| "#{domain}#{path}#{expires}#{secure}#{httponly}" | |
| end | |
| end |
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