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Man Pages


Manual Reference Pages  -  CAPTCHA::RECAPTCHA::MAILHIDE (3)

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NAME

Captcha::reCAPTCHA::Mailhide - A Perl implementation of the reCAPTCHA Mailhide API

CONTENTS

VERSION

This document describes Captcha::reCAPTCHA::Mailhide version 0.94

SYNOPSIS



    use Captcha::reCAPTCHA::Mailhide;
   
    my $m = Captcha::reCAPTCHA::Mailhide->new;

    # Get the URL that reveals the email
    my $url = $m->mailhide_url( MAIL_PUBLIC_KEY, MAIL_PRIVATE_KEY, someone@example.com );

    # Or - even easier - get the formatted HTML for an email link
    print $m->mailhide_html( MAIL_PUBLIC_KEY, MAIL_PRIVATE_KEY, someone@example.com );



For complete examples see the /examples subdirectory

DESCRIPTION

reCAPTCHA is a hybrid mechanical turk and captcha that allows visitors who complete the captcha to assist in the digitization of books.

From <http://recaptcha.net/learnmore.html>:



    reCAPTCHA improves the process of digitizing books by sending words that
    cannot be read by computers to the Web in the form of CAPTCHAs for
    humans to decipher. More specifically, each word that cannot be read
    correctly by OCR is placed on an image and used as a CAPTCHA. This is
    possible because most OCR programs alert you when a word cannot be read
    correctly.



This Perl implementation is modelled on the PHP interface that can be found here:

<http://recaptcha.net/plugins/php/>

INTERFACE

To use reCAPTCHA Mailhide you need to get a public, private key pair from this page:

<http://www.google.com/recaptcha/mailhide/apikey>

The Mailhide API consists of two methods mailhide_html and mailhide_url. The methods have the same parameters.

The _html version returns HTML that can be directly put on your web page. The username portion of the email that is passed in is truncated and replaced with a link that calls Mailhide. The _url version gives you the url to decode the email and leaves it up to you to place the email in HTML.
new Create a new Captcha::reCAPTCHA::Mailhide.
mailhide_url( $pubkey, $privkey, $email ) Generate a link that will decode the specified email address.
$pubkey The Mailhide public key from the signup page
$privkey The Mailhide private key from the signup page
$email The email address you want to hide.

Returns a URL that when clicked will allow the user to decode the hidden email address.

mailhide_html( $pubkey, $privkey, $email ) Generates HTML markup to embed a Mailhide protected email address on a page.

The arguments are the same as for mailhide_url.

Returns a string containing HTML that may be embedded directly in a web page.

CONFIGURATION AND ENVIRONMENT

Captcha::reCAPTCHA::Mailhide requires no configuration files or environment variables.

To use Mailhide get a public/private key pair here:

<http://www.google.com/recaptcha/mailhide/apikey>

DEPENDENCIES

Crypt::Rijndael, MIME::Base64, HTML::Tiny

INCOMPATIBILITIES

None reported .

BUGS AND LIMITATIONS

No bugs have been reported.

Please report any bugs or feature requests to bug-captcha-recaptcha@rt.cpan.org, or through the web interface at <http://rt.cpan.org>.

AUTHOR

Andy Armstrong <andy@hexten.net>

LICENCE AND COPYRIGHT

Copyright (c) 2007, Andy Armstrong <andy@hexten.net>. All rights reserved.

This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See perlartistic.

DISCLAIMER OF WARRANTY

BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE SOFTWARE AS IS WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION.

IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENCE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE SOFTWARE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE SOFTWARE TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

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perl v5.20.3 CAPTCHA::RECAPTCHA::MAILHIDE (3) 2010-07-03

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