----- Original Message ----- From: "Josef Albert Meile" <jmeile@hotmail.com> To: <zope@zope.org> Sent: Friday, September 12, 2003 9:35 AM Subject: [Zope] Re: Simple way to obfuscate email addresses to foil spambots?
Does anyone have any suggestions as the best way to, within Zope, obfuscate email addresses such that, when passed an email, a script obfuscates it from being picked up by email-address collecting robots?
Or any other creative anti-spam tricks.. I work at an educational nonprofit and our spam load seems to be increasing exponentially..
In the past, I was using a Javascript that I translated to python: http://www.zope.org/Members/jmeile/email%20encoder
But for some reason it shows the real address on the html source on netscape 4.x under zope. Without zope, the javascript works perfect also in netscape 4.x.
Anyway, now I'm using this on the body of my pages:
<script language="JavaScript">jemail("username","domain","");</script>
or
<script language="JavaScript">jemail("username","domain","linkText");</script>
If you use the first call, then the text of the email link will be the e-mail address. The second one allows you to specify a text, ie: 'Contact us'.
And the javascript code is:
function jemail(user, domain, text){ if (text=='') document.write('<a href="'+'mailto:'+user+'@'+domain+'">'+user+'@' +domain+'</a>') else document.write('<a href="'+'mailto:'+user+'@'+domain+'">'+text+'</a>') }
You can combine it with dtml like this:
def splitMail(myEmail): return myEmail.split('@')
Then:
<dtml-let splitedMail="splitMail(myEmail)" username="myEmail[0]" domain="myEmail[1]"> <script
language="JavaScript">jemail("&dtml-username;","&dtml-domain;","linkText");<
/script>
</dtml/let>
And if you are using Zclasses or python Classes, then you can store the encoded email as an attribute and you won't have to write the ugly and long code again.
I'd like to use zpt, but I haven't had time to think about it.
Regards, Josef
Make a Python Script called antispam(stolen from HTMLgen.py):
parameters: address --------------------------------------------------- import string from whrandom import choice
buffer = map(None, address) for i in range(0, len(address), choice((2,3,4))): buffer[i] = '&#%d;' % ord(buffer[i])
return string.join(buffer,'') ---------------------------------------------------
on your pages, use mailtos like this:
<a href=mailto:<dtml-var expr="antispam('myname@mydomain.com')"> >My Name</a>
or, even better: ----------------------------------------------------- import string from whrandom import choice buffer = map(None, address) for i in range(0, len(address), choice((2,3,4))): buffer[i] = '&#%d;' % ord(buffer[i]) return '<A HREF="mailto:%s">%s</A>' % (string.join(buffer,''),string.join(buffer,'')) ------------------------------------------------------------- and then use: <dtml-var expr="antispam('myname@mydomain.com')"> on your pages...