Comments on: Overkill Email Obfuscation with Ruby and Javascript

By: Anonymous

Anonymous — Fri, 13 Nov 2009 02:41:20 +0000

Good stuff. Here is another method in Rails which relies on BlueCloth…

def email_link(email)
markdown(”").gsub!(/\/?/, ”)
end

By: Macario Ortega

Macario Ortega — Thu, 16 Jul 2009 17:35:47 +0000

Yet a bit cleaner:

def html_obfuscate string
string.unpack(’C*’).collect{ |char| “&##{ char };” }.join
end

By: Justin R.

Justin R. — Sat, 02 Aug 2008 07:05:05 +0000



def html_obfuscate(string)
    lower = ('a'..'z').to_a
    upper = ('A'..'Z').to_a
    string.split('').map { |char|  
      output = lower.index(char) + 97 if lower.include?(char)
      output = upper.index(char) + 65 if upper.include?(char)
      output ? "&##{output};" : char
    }.join
  end

is a bit cleaner…

By: Jan Wilmans

Jan Wilmans — Sat, 19 Jul 2008 22:16:31 +0000

Hi,

Nice code!

I’ve changed it a bit to my liking, I think it’s both shorter and safer:
The only thing I broke was noscript support, but I really dont care that
people using a non-javascript browser can’t email me…

# Rot13 encodes a string
def rot13(string)
  string.tr "A-Za-z", "N-ZA-Mn-za-m"
end
 
# Takes in an email address and (optionally) anchor text,
# its purpose is to send the email address rot13'd to
# javascript so it is never actually send in plain text
def antispam_email_link(email, linktext=email)
 
  content = "it is : " + linktext + ""
  rot13_encoded_email = rot13(content) # obfuscate email address as rot13
 
  out = "\n"
  out += "  <!--\n"
  out += "    string = '#{rot13_encoded_email}'.replace(/[a-zA-Z]/g, function(c){ return String.fromCharCode((c = (c = c.charCodeAt(0) + 13) ? c : c - 26);});\n"
  out += "    document.write(string); \n"
  out += "  //-->\n"
  out += "\n"
  return out
end

By: Overkill Email Obfuscation with Ruby and Javascript | Pest Identification

Overkill Email Obfuscation with Ruby and Javascript | Pest Identification — Sat, 15 Mar 2008 00:16:52 +0000

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