From 20397ad3d9dad39670ed92923d2513bd89c7b0bb Mon Sep 17 00:00:00 2001
From: Dries Buytaert <dries@buytaert.net>
Date: Sun, 20 May 2001 13:51:40 +0000
Subject: CHANGES

- Redid settings.module and even renamed it to conf.module.
    * Settings are now grouped in basic categories like "system
      settings", "module settings" and "filters".
  * Added new settings to make Drupal easier to configure and
  to make some aspects like the watchdog scale better.

- Renamed includes/settings.php to includes/conf.php.

- Added filter support to conf.module and introduced filter hooks so
  modules can implement and export new filters.  Example filters are
  an HTML filter (implemented), a profanity filter, an url converter,
  ASCII smileys to images filter and so on ...

- Reworked the check_* functions: user contributed content/input is
  only verified and filtered once in its lifespan.

NOTES

- Altough this is a large commit, no database changes are required.
---
 modules/node/node.module | 25 +++++++++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

(limited to 'modules/node/node.module')

diff --git a/modules/node/node.module b/modules/node/node.module
index 53c32219f..98b6482ef 100644
--- a/modules/node/node.module
+++ b/modules/node/node.module
@@ -11,13 +11,34 @@ class Node {
   }
 }
 
-function node_macro($text) {
+function node_conf_filters() {
+  $output .= form_select(t("Strip HTML tags"), "filter_html", variable_get("filter_html", 0), array("Disabled", "Enabled"), t("Strip HTML and PHP tags."));
+  $output .= form_textfield(t("Allowed HTML tags"), "allowed_html", variable_get("allowed_html", "<A><B><BLOCKQUOTE><DD><DL><DT><I><LI><OL><U><UL>"), 64, 128, t("If enabled, optionally specify tags which should not be stripped.  'STYLE' attributes, 'ON' attributes and unclosed tags are always stripped."));
+  $output .= "<HR>";
+  $output .= form_select(t("Strip link tags"), "filter_link", variable_get("filter_link", 0), array("Disabled", "Enabled"), t("Substitute special [[link]] tags."));
+  $output .= "<HR>";
+  return $output;
+}
+
+function node_filter_html($text) {
+  $text = eregi_replace("([ \f\r\t\n\'\"])style=[^>]+", "\\1", $text);
+  $text = eregi_replace("([ \f\r\t\n\'\"])on[a-z]+=[^>]+", "\\1", $text);
+  $text = strip_tags($text, variable_get("allowed_html", ""));
+  return $text;
+}
+
+function node_filter_link($text) {
   $src = array("/\[\[(([^\|]*?)(\|([^\|]*?))?)\]\]/e");  // [link|description]
   $dst = array(format_tag('\\2', '\\4'));                // [link|description]
-
   return preg_replace($src, $dst, $text);
 }
 
+function node_filter($text) {
+  if (variable_get("filter_html", 0)) $text = node_filter_html($text);
+  if (variable_get("filter_link", 0)) $text = node_filter_link($text);
+  return $text;
+}
+
 function node_overview($query = array()) {
   global $user;
 
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