<html> <head> <title>MHonArc Resources: ADDRESSMODIFYCODE</title> <link rel="stylesheet" type="text/css" href="../docstyles.css"> </head> <body> <!--x-rc-nav--> <table border=0><tr valign="top"> <td align="left" width="50%">[Prev: <a href="add.html">ADD</a>]</td><td><nobr>[<a href="../resources.html#addressmodifycode">Resources</a>][<a href="../mhonarc.html">TOC</a>]</nobr></td><td align="right" width="50%">[Next: <a href="afs.html">AFS</a>]</td></tr></table> <!--/x-rc-nav--> <hr> <h1>ADDRESSMODIFYCODE</h1> <!--X-TOC-Start--> <ul> <li><a href="#syntax">Syntax</a> <li><a href="#description">Description</a> <li><a href="#default">Default Setting</a> <li><a href="#rcvars">Resource Variables</a> <li><a href="#examples">Examples</a> <li><a href="#version">Version</a> <li><a href="#seealso">See Also</a> </ul> <!--X-TOC-End--> <!-- *************************************************************** --> <hr> <h2><a name="syntax">Syntax</a></h2> <dl> <dt><strong>Envariable</strong></dt> <dd><p> <code>M2H_ADDRESSMODIFYCODE=<var>Perl_expressions</var></code> </p> </dd> <dt><strong>Element</strong></dt> <dd><p> <code><ADDRESSMODIFYCODE></code><br> <var>Perl expressions...</var><br> <code></ADDRESSMODIFYCODE></code><br> </p> </dd> <dt><strong>Command-line Option</strong></dt> <dd><p> <code>-addressmodifycode </code><var>Perl_expressions</var> </p> </dd> </dl> <!-- *************************************************************** --> <hr> <h2><a name="description">Description</a></h2> <p>ADDRESSMODIFYCODE defines Perl expressions to apply to addresses in message headers and to addresses in text bodies of messages if the <a href="modifybodyaddresses.html">MODIFYBODYADDRESSES</a> is active. </p> <p>When defining the expressions, the mail address will be in the <b><tt>$_</tt></b> variable. The value of <b><tt>$_</tt></b> after all expressions are evaluated is the address MHonArc will print. </p> <table class="note" width="100%"> <tr valign=top> <td><a name="note1"><strong>NOTE:</strong></a></td> <td width="100%"><p>ADDRESSMODIFYCODE only affects the display text of the address. For <strong>message headers</strong>, when <a href="mailto.html">MAILTO</a> is active, the URL of the link is <b>NOT</b> affected by ADDRESSMODIFYCODE. <a href="mailtourl.html">MAILTOURL</a> can be used to modify the URL. </p> </td> </tr> </table> <!-- *************************************************************** --> <hr> <h2><a name="default">Default Setting</a></h2> <p>Nil. </p> <!-- *************************************************************** --> <hr> <h2><a name="rcvars">Resource Variables</a></h2> <p>N/A </p> <!-- *************************************************************** --> <hr> <h2><a name="examples">Examples</a></h2> <p>ADDRESSMODIFYCODE's main use is to obfuscate addresses, or hide them entirely, to prevent spam address harvesters from getting user addresses from MHonArc archives. Here is an example that performs a ROT13 to provide some simple obfuscation: </p> <pre class="code"> <b><AddressModifyCode></b> tr/A-Za-z/N-ZA-Mn-za-m/; <b></AddressModifyCode></b> </pre> <p>However, this may not be enough since an intelligent harvester may try a ROT13. To completely hide the address, do something like this: </p> <pre class="code"> <b><AddressModifyCode></b> $_ = 'address<!-- -->@<!-- -->hidden'; <b></AddressModifyCode></b> </pre> <p>You cannot rely on ADDRESSMODIFYCODE alone to hide/obfuscate addresses (see <a href="#note1">NOTE</a> above). See the <a href="spammode.html">SPAMMODE</a> resource if you are interested in fighting address harvesting. </p> <!-- *************************************************************** --> <hr> <h2><a name="version">Version</a></h2> <p>2.4.0 </p> <!-- *************************************************************** --> <hr> <h2><a name="seealso">See Also</a></h2> <p> <a href="mailto.html">MAILTO</a>, <a href="mailtourl.html">MAILTOURL</a>, <a href="modifybodyaddresses.html">MODIFYBODYADDRESSES</a>, <a href="spammode.html">SPAMMODE</a> </p> <!-- *************************************************************** --> <hr> <!--x-rc-nav--> <table border=0><tr valign="top"> <td align="left" width="50%">[Prev: <a href="add.html">ADD</a>]</td><td><nobr>[<a href="../resources.html#addressmodifycode">Resources</a>][<a href="../mhonarc.html">TOC</a>]</nobr></td><td align="right" width="50%">[Next: <a href="afs.html">AFS</a>]</td></tr></table> <!--/x-rc-nav--> <hr> <address> $Date: 2005/05/13 00:00:36 $ <br> <img align="top" src="../monicon.png" alt=""> <a href="http://www.mhonarc.org/" ><strong>MHonArc</strong></a><br> Copyright © 1999, <a href="http://www.earlhood.com/" >Earl Hood</a>, <a href="mailto:mhonarc%40mhonarc.org" >mhonarc<!-- -->@<!-- -->mhonarc.org</a><br> </address> </body> </html>