diff options
| author | admin <devnull@localhost> | 2006-08-25 19:25:49 +0200 |
|---|---|---|
| committer | admin <devnull@localhost> | 2006-08-25 19:25:49 +0200 |
| commit | b0dd10f8171945e0c1f3527dd1e9d18b043e01a7 (patch) | |
| tree | c3583ba09e72217683c4304f4690df6ce39ba731 /user_guide/general/security.html | |
Initial Import
Diffstat (limited to 'user_guide/general/security.html')
| -rw-r--r-- | user_guide/general/security.html | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/user_guide/general/security.html b/user_guide/general/security.html new file mode 100644 index 000000000..06287a23b --- /dev/null +++ b/user_guide/general/security.html @@ -0,0 +1,159 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html>
+<head>
+
+<title>Code Igniter User Guide</title>
+
+<style type='text/css' media='all'>@import url('../userguide.css');</style>
+<link rel='stylesheet' type='text/css' media='all' href='../userguide.css' />
+
+<script type="text/javascript" src="../scripts/nav.js"></script>
+<script type="text/javascript" src="../scripts/prototype.lite.js"></script>
+<script type="text/javascript" src="../scripts/moo.fx.js"></script>
+<script type="text/javascript">
+window.onload = function() {
+ myHeight = new fx.Height('nav', {duration: 400});
+ myHeight.hide();
+}
+</script>
+
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+<meta http-equiv='expires' content='-1' />
+<meta http-equiv= 'pragma' content='no-cache' />
+<meta name='robots' content='all' />
+<meta name='author' content='Rick Ellis' />
+<meta name='description' content='Code Igniter User Guide' />
+
+</head>
+<body>
+
+<!-- START NAVIGATION -->
+<div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="masthead">
+<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
+<tr>
+<td><h1>Code Igniter User Guide Version 1.4.0</h1></td>
+<td id="breadcrumb_right"><a href="../toc.html">Full Table of Contents</a></td>
+</tr>
+</table>
+</div>
+<!-- END NAVIGATION -->
+
+
+<!-- START BREADCRUMB -->
+<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
+<tr>
+<td id="breadcrumb">
+<a href="http://www.codeigniter.com/">Code Igniter Home</a> ›
+<a href="../index.html">User Guide Home</a> ›
+Security
+</td>
+<td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="www.codeigniter.com/user_guide/" />Search User Guide <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" /> <input type="submit" class="submit" name="sa" value="Go" /></form></td>
+</tr>
+</table>
+<!-- END BREADCRUMB -->
+
+<br clear="all" />
+
+
+<!-- START CONTENT -->
+<div id="content">
+
+<h1>Security</h1>
+
+<p>This page describes some "best practices" regarding web security, and details
+Code Igniter's internal security features.</p>
+
+
+<h2>URI Security</h2>
+
+<p>Code Igniter is fairly restrictive regarding which characters it allows in your URI strings in order to help
+minimize the possibility that malicious data can be passed to your application. URIs may only contain the following:
+</p>
+
+<ul>
+<li>Alpha-numeric text</li>
+<li>Tilde: ~ </li>
+<li>Period: .</li>
+<li>Colon: :</li>
+<li>Underscore: _</li>
+<li>Dash: -</li>
+</ul>
+
+<h2>GET, POST, and COOKIE Data</h2>
+
+<p>GET data is simply disallowed by Code Igniter since the system utilizes URI segments rather than traditional URL query strings (unless
+you have the query string option enabled in your config file). The global GET
+array is <strong>unset</strong> by the Input class during system initialization.</p>
+
+<h2>Register_globals</h2>
+
+<p>During system initialization all global variables are unset, except those found in the $_POST and $_COOKIE arrays. The unsetting
+routine is effectively the same as register_globals = off.</p>
+
+
+<h2>magic_quotes_runtime</h2>
+
+<p>The magic_quotes_runtime directive is turned off during system initialization so that you don't have to remove slashes when
+retrieving data from your database.</p>
+
+<h1><br />Best Practices</h1>
+
+<p>Before accepting any data into your application, whether it be POST data from a form submission, COOKIE data, URI data,
+XML-RPC data, or even data from the SERVER array, you are encouraged to practice this three step approach:</p>
+
+<ol>
+
+<li>Filter the data as if it were tainted.</li>
+<li>Validate the data to ensure it conforms to the correct type, length, size, etc. (sometimes this step can replace step one)</li>
+<li>Escape the data before submitting it into your database.</li>
+</ol>
+
+Code Igniter provides the following functions to assist in this process:</p>
+
+<ul>
+
+<li><h2>XSS Filtering</h2>
+
+<p>Code Igniter comes with a Cross Site Scripting filter. This filter looks for commonly
+used techniques to embed malicious Javascript into your data, or other types of code that attempt to hijack cookies
+or do other malicious things. The XSS Filter is described <a href="../libraries/input.html">here</a>.
+</p>
+</li>
+
+<li><h2>Validate the data</h2>
+
+<p>Code Igniter has a <a href="../libraries/validation.html">Validation Class</a> that assists you in validating, filtering, and prepping
+your data.</p>
+</li>
+
+<li><h2>Escape all data before database insertion</h2>
+
+<p>Never insert information into your database without escaping it. Please see the section that discusses
+<a href="../libraries/database/queries.html">queries</a> for more information.</p>
+
+</li>
+
+</ul>
+
+
+
+
+</div>
+<!-- END CONTENT -->
+
+
+<div id="footer">
+<p>
+Previous Topic: <a href="alternative_php.html">Alternative PHP</a>
+ ·
+<a href="#top">Top of Page</a> ·
+<a href="../index.html">User Guide Home</a> ·
+Next Topic: <a href="../libraries/benchmark.html">Benchmarking Class</a>
+<p>
+<p><a href="http://www.codeigniter.com">Code Igniter</a> · Copyright © 2006 · <a href="http://www.pmachine.com">pMachine, Inc.</a></p>
+</div>
+
+</body>
+</html>
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