<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang=""> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>django.middleware.clickjacking — Django 1.8.19 documentation</title> <link rel="stylesheet" href="../../../_static/default.css" type="text/css" /> <link rel="stylesheet" href="../../../_static/pygments.css" type="text/css" /> <script type="text/javascript"> var DOCUMENTATION_OPTIONS = { URL_ROOT: '../../../', VERSION: '1.8.19', COLLAPSE_INDEX: false, FILE_SUFFIX: '.html', HAS_SOURCE: true }; </script> <script type="text/javascript" src="../../../_static/jquery.js"></script> <script type="text/javascript" src="../../../_static/underscore.js"></script> <script type="text/javascript" src="../../../_static/doctools.js"></script> <link rel="index" title="Index" href="../../../genindex.html" /> <link rel="search" title="Search" href="../../../search.html" /> <link rel="top" title="Django 1.8.19 documentation" href="../../../contents.html" /> <link rel="up" title="django" href="../../django.html" /> <script type="text/javascript" src="../../../templatebuiltins.js"></script> <script type="text/javascript"> (function($) { if (!django_template_builtins) { // templatebuiltins.js missing, do nothing. return; } $(document).ready(function() { // Hyperlink Django template tags and filters var base = "../../../ref/templates/builtins.html"; if (base == "#") { // Special case for builtins.html itself base = ""; } // Tags are keywords, class '.k' $("div.highlight\\-html\\+django span.k").each(function(i, elem) { var tagname = $(elem).text(); if ($.inArray(tagname, django_template_builtins.ttags) != -1) { var fragment = tagname.replace(/_/, '-'); $(elem).html("<a href='" + base + "#" + fragment + "'>" + tagname + "</a>"); } }); // Filters are functions, class '.nf' $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { var filtername = $(elem).text(); if ($.inArray(filtername, django_template_builtins.tfilters) != -1) { var fragment = filtername.replace(/_/, '-'); $(elem).html("<a href='" + base + "#" + fragment + "'>" + filtername + "</a>"); } }); }); })(jQuery); </script> </head> <body role="document"> <div class="document"> <div id="custom-doc" class="yui-t6"> <div id="hd"> <h1><a href="../../../index.html">Django 1.8.19 documentation</a></h1> <div id="global-nav"> <a title="Home page" href="../../../index.html">Home</a> | <a title="Table of contents" href="../../../contents.html">Table of contents</a> | <a title="Global index" href="../../../genindex.html">Index</a> | <a title="Module index" href="../../../py-modindex.html">Modules</a> </div> <div class="nav"> <a href="../../index.html" title="Module code" accesskey="U">up</a></div> </div> <div id="bd"> <div id="yui-main"> <div class="yui-b"> <div class="yui-g" id="_modules-django-middleware-clickjacking"> <h1>Source code for django.middleware.clickjacking</h1><div class="highlight"><pre> <span></span><span class="sd">"""</span> <span class="sd">Clickjacking Protection Middleware.</span> <span class="sd">This module provides a middleware that implements protection against a</span> <span class="sd">malicious site loading resources from your site in a hidden frame.</span> <span class="sd">"""</span> <span class="kn">from</span> <span class="nn">django.conf</span> <span class="k">import</span> <span class="n">settings</span> <div class="viewcode-block" id="XFrameOptionsMiddleware"><a class="viewcode-back" href="../../../ref/middleware.html#django.middleware.clickjacking.XFrameOptionsMiddleware">[docs]</a><span class="k">class</span> <span class="nc">XFrameOptionsMiddleware</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span> <span class="sd">"""</span> <span class="sd"> Middleware that sets the X-Frame-Options HTTP header in HTTP responses.</span> <span class="sd"> Does not set the header if it's already set or if the response contains</span> <span class="sd"> a xframe_options_exempt value set to True.</span> <span class="sd"> By default, sets the X-Frame-Options header to 'SAMEORIGIN', meaning the</span> <span class="sd"> response can only be loaded on a frame within the same site. To prevent the</span> <span class="sd"> response from being loaded in a frame in any site, set X_FRAME_OPTIONS in</span> <span class="sd"> your project's Django settings to 'DENY'.</span> <span class="sd"> Note: older browsers will quietly ignore this header, thus other</span> <span class="sd"> clickjacking protection techniques should be used if protection in those</span> <span class="sd"> browsers is required.</span> <span class="sd"> https://en.wikipedia.org/wiki/Clickjacking#Server_and_client</span> <span class="sd"> """</span> <span class="k">def</span> <span class="nf">process_response</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">request</span><span class="p">,</span> <span class="n">response</span><span class="p">):</span> <span class="c1"># Don't set it if it's already in the response</span> <span class="k">if</span> <span class="n">response</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'X-Frame-Options'</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span> <span class="k">return</span> <span class="n">response</span> <span class="c1"># Don't set it if they used @xframe_options_exempt</span> <span class="k">if</span> <span class="nb">getattr</span><span class="p">(</span><span class="n">response</span><span class="p">,</span> <span class="s1">'xframe_options_exempt'</span><span class="p">,</span> <span class="kc">False</span><span class="p">):</span> <span class="k">return</span> <span class="n">response</span> <span class="n">response</span><span class="p">[</span><span class="s1">'X-Frame-Options'</span><span class="p">]</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_xframe_options_value</span><span class="p">(</span><span class="n">request</span><span class="p">,</span> <span class="n">response</span><span class="p">)</span> <span class="k">return</span> <span class="n">response</span> <span class="k">def</span> <span class="nf">get_xframe_options_value</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">request</span><span class="p">,</span> <span class="n">response</span><span class="p">):</span> <span class="sd">"""</span> <span class="sd"> Gets the value to set for the X_FRAME_OPTIONS header.</span> <span class="sd"> By default this uses the value from the X_FRAME_OPTIONS Django</span> <span class="sd"> settings. If not found in settings, defaults to 'SAMEORIGIN'.</span> <span class="sd"> This method can be overridden if needed, allowing it to vary based on</span> <span class="sd"> the request or response.</span> <span class="sd"> """</span> <span class="k">return</span> <span class="nb">getattr</span><span class="p">(</span><span class="n">settings</span><span class="p">,</span> <span class="s1">'X_FRAME_OPTIONS'</span><span class="p">,</span> <span class="s1">'SAMEORIGIN'</span><span class="p">)</span><span class="o">.</span><span class="n">upper</span><span class="p">()</span></div> </pre></div> </div> </div> </div> <div class="yui-b" id="sidebar"> <div class="sphinxsidebar" role="navigation" aria-label="main navigation"> <div class="sphinxsidebarwrapper"> <h3>Browse</h3> <ul> </ul> <h3>You are here:</h3> <ul> <li> <a href="../../../index.html">Django 1.8.19 documentation</a> <ul><li><a href="../../index.html">Module code</a> <ul><li><a href="../../django.html">django</a> <ul><li>django.middleware.clickjacking</li></ul> </li></ul></li></ul> </li> </ul> <div id="searchbox" style="display: none" role="search"> <h3>Quick search</h3> <form class="search" action="../../../search.html" method="get"> <div><input type="text" name="q" /></div> <div><input type="submit" value="Go" /></div> <input type="hidden" name="check_keywords" value="yes" /> <input type="hidden" name="area" value="default" /> </form> </div> <script type="text/javascript">$('#searchbox').show(0);</script> </div> </div> <h3>Last update:</h3> <p class="topless">Mar 10, 2018</p> </div> </div> <div id="ft"> <div class="nav"> <a href="../../index.html" title="Module code" accesskey="U">up</a></div> </div> </div> <div class="clearer"></div> </div> </body> </html>