[MOD] reCAPTCHA

[V@no]

This mod will replace 4images default captcha graphic with more advanced reCAPTCHA

Step 1
Register at http://recaptcha.net
Once registered, go to "My account" -> "My sites" and add each domain where you want use reCAPTCHA.
Then go to "My account" -> "My sites" and click on each domain you've added, it will show you Public Key and Private Key, write them down, you'll need them in next step.

Download PHP plugin, extract it and upload recaptchalib.php into 4images includes/ folder



Step 2
Open global.php
Find:
$captcha_filter_bg           = 1;


Insert _BELOW:
$captcha_recaptcha           = 1; //0 = disable; 1 = enable with auto domain select; "yourdomain" = for one specific domain only, this domain must be specified in $recaptcha_domains below
//$captcha_recaptcha           = "yourdomain2"; //use only reCAPTCHA keys for yourdomain2

$recaptcha_domains['yourdomain1'] = array("public key for yourdomain1", "private key for yourdomain1");
/*//to add more then one domain:
$recaptcha_domains['example.com']   = array("public key for example.com", "private key for example.com");
$recaptcha_domains['4homepages.de'] = array("asdfasdfasdf", "a98sd7as9df7as");
$recaptcha_domains['google.com']    = array("23kj423h42k", "8fas9d8a9sdf9a");
*/
if ($captcha_enable && $captcha_recaptcha
    && (isset($recaptcha_domains[$captcha_recaptcha])
          || isset($recaptcha_domains[strtolower($_SERVER["HTTP_HOST"])])))
{
  $captcha_recaptcha = (isset($recaptcha_domains[$captcha_recaptcha]))
                          ? $recaptcha_domains[$captcha_recaptcha]
                          : $recaptcha_domains[strtolower($_SERVER["HTTP_HOST"])];
}
else
{
  $captcha_recaptcha = 0;
}


In the code you just inserted update $recaptcha_domains['yourdomain1'] = array("public key for yourdomain1", "private key for yourdomain1"); with the correct data, yourdomain1 replace with the domain name of your website.  public key for yourdomain1 and private key for yourdomain1 with the public and private keys from Step 1.
You can add as many domains as you wish.



Step 3
Open includes/captcha_utils.php
Find:
$captcha_enable = $captcha_enable && function_exists("imagecreatetruecolor") && function_exists("imagecopyresampled");


Replace it with:function recaptcha_image()
{
  global $captcha_recaptcha;
  if ($captcha_recaptcha)
  {
    require_once(ROOT_PATH . 'includes/recaptchalib.php');
    return recaptcha_get_html($captcha_recaptcha[0]);
  }
}
if (!$captcha_recaptcha)
{
  $captcha_enable = $captcha_enable && function_exists("imagecreatetruecolor") && function_exists("imagecopyresampled");
}




Step 3.1
Find:
  $sess_code = trim($site_sess->get_session_var('captcha'));


Insert ^ABOVE:
  global $captcha_recaptcha, $HTTP_POST_VARS;
  if ($captcha_recaptcha)
  {
    require_once(ROOT_PATH . 'includes/recaptchalib.php');
    $resp = recaptcha_check_answer ($captcha_recaptcha[1],
                                    $_SERVER["REMOTE_ADDR"],
                                    $HTTP_POST_VARS["recaptcha_challenge_field"],
                                    $HTTP_POST_VARS["recaptcha_response_field"]);
    
    if ($resp->is_valid)
      return true;
  }




Step 4
Open includes/page_header.php
Find:
  "url_captcha_image" => $site_sess->url(ROOT_PATH."captcha.php"),


Insert _BELOW::
  "recaptcha" => ($captcha_recaptcha) ? recaptcha_image() : "",
  "recaptcha_public" => @$captcha_recaptcha[0],
  "recaptcha_private" => @$captcha_recaptcha[1],




Step 5
In templates comment_form.html, member_uploadform.html, postcard_preview.html, register_form.html and in any others where you were using captcha, use this tag:
{recaptcha}
If you wish to customize reCAPTCHA view to match your site theme or whatever, you probably will need do it via javascript (don't ask me how, I don't know), in that case you might need public or private key, for that you can use these tags:
{recaptcha_public}
{recaptcha_private}


P.S.
You can use both 4images built-in captcha and reCAPTCHA at the same time if you wish.

[AntiNSA2]

works cool! POwer to the books and the blind people! Cool audio captcha.. first I was thinking... what the? but very cool.. better than entering numbers like a machiene

[Anarchology]

Hi,

I feel stupid for asking, but I can't figure out how to incorporate the {recaptcha} into the pages. I would like to completely replace the 4Images Captcha with the reCaptcha mod. Can someone help me properly on how to substitute. I thought I added the tag in correctly, but nothing is showing up...

Original register_form.html block of code...

Code: [Select]

            <td class="row2"><b>{lang_password}</b></td>
            <td class="row2"><input type="password" name="user_password" size="30" class="input" /></td>
          </tr>
          <tr>
            <td class="row1"><b>{lang_email}</b></td>
            <td class="row1"><input type="text" name="user_email" size="30" class="input" value="{user_email}" /></td>
          </tr>
{if captcha_registration}
          <tr>
            <td class="row1" valign="top"><b>{lang_captcha}</b></td>
            <td class="row1">
              <a href="javascript:new_captcha_image();"><img src="{url_captcha_image}" border="0" id="captcha_image" /></a> <br />
              <input type="text" name="captcha" size="30" value="" class="commentinput" id="captcha_input" />
              <br />
              {lang_captcha_desc}
            </td>
          </tr>
          {endif captcha_registration}
        </table>
      </td>
    </tr>

[V@no]

Where is {recaptcha} tag?
And make sure you did steps 1 and 2 properly.

[Anarchology]

I forgot to implement the PHP Plugin from the first step. I redid the other steps, but feel like I'm improperly adding the {recaptcha} string to the files. I have been testing it on the register_form.html. Below is the full modified script from that file. As of right now, nothing is showing up.

Code: [Select]

{lang_register_msg}
<form method="POST" action="{url_register}">
  <table width="100%" border="0" cellspacing="0" cellpadding="1">
    <tr>
      <td valign="top" class="head1">
        <table width="100%" border="0" cellpadding="4" cellspacing="0">
          <tr>
            <td colspan="2" valign="top" class="head1">{lang_register}</td>
          </tr>
          <tr>
            <td class="row1"><b>{lang_user_name}</b></td>
            <td class="row1"><input type="text" name="user_name" size="30" value="{user_name}" class="input" /></td>
          </tr>
          <tr>
            <td class="row2"><b>{lang_password}</b></td>
            <td class="row2"><input type="password" name="user_password" size="30" class="input" /></td>
          </tr>
          <tr>
            <td class="row1"><b>{lang_email}</b></td>
            <td class="row1"><input type="text" name="user_email" size="30" class="input" value="{user_email}" /></td>
          </tr>
{if captcha_registration}
          <tr>
            <td class="row1" valign="top"><b>{lang_captcha}</b></td>
            <td class="row1">{recaptcha}
            </td>
          </tr>
          {endif captcha_registration}
        </table>
      </td>
    </tr>
  </table>
  <input type="hidden" name="action" value="register" />
  <p align="center">
    <input type="submit" value="{lang_submit}" class="button" />
    <input type="reset" value="{lang_reset}" class="button" />
  </p>
</form>
Here is the test page, since I am newly creating the complete script, I will then move it over to my site...
http://www.savegasforums.com/register.php

^^^ You can see the reCAPTCHA isn't showing up.

Thanks in advance!

[V@no]

make sure you've registered savegasforums.com at your recaptcha account (step 1) and in step 2 you added the correct public and private keys for the domain.

[Anarchology]

Man, is this odd! Apparently, it is something on the host server's side. If I type my site in like "http://mysite.com", the captcha shows up. BUT... if I type in my site like "http://www.mysite.com", it doesn't show. I've had this happen to me again, so I think I can fix this.

[V@no]

no, www.mysite.com and mysite.com are two different domains. they might point to the same server, but they are different.
add both domains in you recaptcha account.

[Anarchology]

no, www.mysite.com and mysite.com are two different domains. they might point to the same server, but they are different.
add both domains in you recaptcha account.

Ahhh, that I didn't consider. Thank you for the tip. I'll do that.

[Baz140]

Have installed recaptcha because built in captcha showing red X server side unable to correct, recaptcha works fine
 BUT I have to leave captcha turned on otherwise recaptcha shows but is bypassed regardless of correct or not,
 How can I turn off captcha to remove red x but leave recaptcha working?
http://www.suffolkbandarchives.co.uk/4images/register.php

[V@no]

You'll need remove it manually from comment_form.html and register_form.html templates.

[Sebas Bonito]

Localisation (e.g. in german)

Just add the following part somewhere in the template (like register_form.html) above the {recaptcha}

Code: [Select]

<script>
var RecaptchaOptions = {
   lang : 'de'
};
</script>
de is (of course) the part for the localisation. So Spanish-Users should change this to es and french to fr.

Further informations here.


I've also made a tiny snippet to recaptcha an e-mail address

[bash-t]

Hallo! Funktioniert der Mod noch mit der aktuellen 4images Version 1.7.7 und der Lib aus der recaptcha-php-1.10.zip?

Ich habe gestern das Mod versucht auf meiner privaten Gallery zu installieren. Zuvor hatte ich das Mod Ajax Comments / Comment Rating http://www.4homepages.de/forum/index.php?topic=23866.0 installiert.

Merkwürdigerweise wurde jeder Kommentar eingetragen, auch wenn ich im Recaptcha "Hützen Grützen" eingegeben habe (was selbstverständlich nicht abgefragt wurde)

Daraufhin habe ich dieses Mod für sich auf meiner öffentlichen Testgallery http://www.pawlikonline.de/temp/4images/details.php?image_id=9 installiert, und komischerweise wird dort kein Kommentar akzeptiert (auch wenn ich das Captcha löse)

Hat jemand einen Tipp für mich?

Anbei noch manuellen Änderungen in der global.php. Alles andere habe ich wie beschrieben installiert.
//$captcha_recaptcha           = 1; //0 = disable; 1 = enable with auto domain select; "yourdomain" = for one specific domain only, this domain must be specified in $recaptcha_domains below
$captcha_recaptcha           = "pawlikonline.de"; //use only reCAPTCHA keys for yourdomain2

$recaptcha_domains['pawlikonline.de'] = array("6Ldq6AcAAAAAA********************", "6Ldq6AcAAAAAA********************");
/*//to add more then one domain:
$recaptcha_domains['example.com']   = array("public key for example.com", "private key for example.com");
$recaptcha_domains['4homepages.de'] = array("asdfasdfasdf", "a98sd7as9df7as");
$recaptcha_domains['google.com']    = array("23kj423h42k", "8fas9d8a9sdf9a");
*/
if ($captcha_enable && $captcha_recaptcha
    && (isset($recaptcha_domains[$captcha_recaptcha])
          || isset($recaptcha_domains[strtolower($_SERVER["HTTP_HOST"])])))
{
  $captcha_recaptcha = (isset($recaptcha_domains[$captcha_recaptcha]))
                          ? $recaptcha_domains[$captcha_recaptcha]
                          : $recaptcha_domains[strtolower($_SERVER["HTTP_HOST"])];
}
else
{
  $captcha_recaptcha = 0;
}

Hint:Selbst wenn ich die Zeile

Code: [Select]

$captcha_recaptcha           = 1; wieder einkommentiere sieht das Ergebnis gleich aus.

Viele Grüße,
Bash-T

[Sebas Bonito]

Hast Du das auch mal als "Nicht-Admin" ausprobiert? Soweit ich das in Erinnerung habe, wird bei Admins die Captcha-Funktion nicht überprüft.

[mawenzi]

@Sebas Bonito
... richtig ...

@bash-t
... willst du dir dieses gewaltige Captcha-Gerät tatsächlich in dein filigranes Template einpflanzen ...
... ich denke Captcha sollte nur eine Hilfe gegen Spam und so unscheinbar wie möglich auf der Seite sein ...
... selbst das Original 4images-Captcha ist mir zu gewaltig ... daher hier ...