From b7ed54f91c373aef452b3540c8cd352d11305c30 Mon Sep 17 00:00:00 2001
From: arf20 <aruizfernandez05@gmail.com>
Date: Wed, 1 Jul 2026 20:15:42 +0200
Subject: Add captcha

---
 subscribe.php | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'subscribe.php')

diff --git a/subscribe.php b/subscribe.php
index f60c15b..f2e9d56 100644
--- a/subscribe.php
+++ b/subscribe.php
@@ -1,5 +1,12 @@
 <?php
 
+require 'CaptchasDotNet.php';
+
+$captchas = new CaptchasDotNet ('arf20', '7QOD8AEp5n9ib5bp',
+                                '/tmp/captchasnet-random-strings','3600',
+                                'abcdefghkmnopqrstuvwxyz','6',
+                                '240','80','000088');
+
 if (!isset($_GET["list"]) || empty($_GET["list"])) {
     die("List required");
 }
@@ -34,6 +41,8 @@ $domain = "arf20.com"
                     <input name="job" type="hidden" value="subscribe">
                     <input name="redirect_failure" type="hidden" value="/error.html"> 
                     <input name="redirect_success" type="hidden" value="/">
+                    <input type="hidden" name="random" value="<?= $captchas->random () ?>" />
+                    <input name="captcha" size="6" />
                     <br><input type="submit" value="Subscribe">
                 </form>
 
@@ -45,9 +54,20 @@ $domain = "arf20.com"
                     <input name="job" type="hidden" value="unsubscribe">
                     <input name="redirect_failure" type="hidden" value="/error.html"> 
                     <input name="redirect_success" type="hidden" value="/">
+                    <input type="hidden" name="random" value="<?= $captchas->random () ?>" />
+                    <input name="captcha" size="6" />
                     <br><input type="submit" value="Subscribe">
                 </form>
+                <?= $captchas->image () ?> <a href="javascript:captchas_image_reload('captchas.net')">Reload Image</a>
+
+                <hr>
+                <h2>E-mail based subscription</h2>
+                <ul>
+                    <li>To subscribe to <?php echo $list; ?>, send a message to <?php echo $list; ?>+subscribe@arf20.com</li>
+                    <li>To unsubscribe, send a message to <?php echo $list; ?>+unsubscribe@arf20.com</li>
+                </ul>
             </div>
         </main>
     </body>
 </html>
+
-- 
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