From bf2e1ab0d905a0bafd4e9eaa503949e0560d4063 Mon Sep 17 00:00:00 2001
From: x2003bruneau <x2003bruneau@839d8a87-29fc-0310-9880-83ba4fa771e5>
Date: Fri, 24 Nov 2006 11:37:27 +0000
Subject: [PATCH] #562: Cipher emails to prevent massive mail dumping by bots

git-svn-id: svn+ssh://murphy/home/svn/platal/trunk@1147 839d8a87-29fc-0310-9880-83ba4fa771e5
---
 ChangeLog              |  1 +
 classes/platalpage.php | 46 ++++++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 45 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index d68121c..5e38c61 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -44,6 +44,7 @@ Bug/Wish:
         - #545: Fix encoding issues with some Windows special chars        -FRU
         - #548: More informations for recovery for homonyms.               -FRU
         - #553: Fix right click on send bug link.                          -Car
+        - #562: Cipher all email adresses                                  -FRU
 
     * Events:
         - #517: URL catcher update (www).                                  -Car
diff --git a/classes/platalpage.php b/classes/platalpage.php
index b0f5d6a..8f26db1 100644
--- a/classes/platalpage.php
+++ b/classes/platalpage.php
@@ -89,10 +89,13 @@ class PlatalPage extends Smarty
 
           case SIMPLE:
             $this->assign('simple', true);
+
           case SKINNED:
-	    $this->register_modifier('escape_html', 'escape_html');
-	    $this->default_modifiers = Array('@escape_html');
+    	    $this->register_modifier('escape_html', 'escape_html');
+	        $this->default_modifiers = Array('@escape_html');
         }
+        $this->register_outputfilter('hide_emails');
+        $this->addJsLink('wiki.js');
 
         if (!$globals->debug) {
             error_reporting(0);
@@ -259,6 +262,45 @@ function trimwhitespace($source, &$smarty)
 }
 
 // }}}
+// {{{ function hide_emails
+
+function _hide_email($source)
+{
+    return '<script type="text/javascript">Nix.decode("' . addslashes(str_rot13($source)) . '");</script>'; 
+}
+
+function hide_emails($source, &$smarty)
+{
+    //prevent email replacement in <script> and <textarea>
+    $tags = array('script', 'textarea');
+
+    foreach ($tags as $tag) {
+        preg_match_all("!<{$tag}[^>]+>.*?</{$tag}>!is", $source, ${$tag});
+        $source = preg_replace("!<{$tag}[^>]+>.*?</{$tag}>!is", "&&&{$tag}&&&", $source);
+    }
+
+    //catch all emails in <a href="mailto:...">
+    preg_match_all("!<a[^>]+href=[\"']mailto:[^>]+>.*?</a>!is", $source, $ahref);
+    $source = preg_replace("!<a[^>]+href=[\"']mailto:[^>]+>.*?</a>!is", '&&&ahref&&&', $source);
+
+    //prevant replacement in tag attributes
+    preg_match_all("!<[^>]+[-a-z0-9_.]+@[-a-z0-9_.]+[^>]+>!is", $source, $misc);
+    $source = preg_replace("!<[^>]+[-a-z0-9_.]+@[-a-z0-9_.]+[^>]+>!is", '&&&misc&&&', $source);
+
+    //catch !
+//    $source = preg_replace('!([-a-z0-9_.]+@[-a-z0-9_.]+)!ie', '_hide_email("\1")', $source); 
+    $source = preg_replace('!&&&ahref&&&!e', '_hide_email(array_shift($ahref[0]))', $source);
+    $source = preg_replace('!&&&misc&&&!e', '_hide_email(array_shift($misc[0]))', $source);
+
+    // restore data
+    foreach ($tags as $tag) {
+        $source = preg_replace("!&&&{$tag}&&&!e",  'array_shift(${$tag}[0])', $source);
+    }
+
+    return $source;
+}
+
+// }}}
 
 // vim:set et sw=4 sts=4 sws=4 foldmethod=marker:
 ?>
-- 
2.1.4