Allow setting any safe attribute on image maps.

This enables any attribute from the HTML 4.01 spec, except for javascript event
handlers.

diff --git a/plugin/parser/ImageMap.py b/plugin/parser/ImageMap.py
index c4c33a8e638c9214e003992749dd92214c4c60be..a2a0867c147764d61cd4c0a55244d58158799dc5 100644 (file)
--- a/plugin/parser/ImageMap.py
+++ b/plugin/parser/ImageMap.py
@@ -57,6 +57,10 @@
       and to alt="area_url" (for the different clickable areas). 
     * Now also "title" supported to generate tooltips for the map areas.
     * Interwiki links can also be specified in "wiki:MoinMoin/Page" syntax now.
+
+    Version ?
+    * Allow setting any HTML attribute that is allowed by the HTML4.01 spec,
+      except for javascript event handlers.
     
 """
 
@@ -64,6 +68,15 @@ import os, random
 from MoinMoin import wikiutil, config
 from MoinMoin.action import AttachFile
 
+# Define the valid attributes for map and area elements. These are directly
+# taken from the HTML4.01 spec at http://www.w3.org/TR/html401/ The lists below
+# mimic the structure used in the HTML spec.
+html_core_attrs = ['id', 'class', 'style', 'title']
+html_i18n = ['lang', 'dir']
+html_events = [] # event attributes left out for security reasons.
+html_attrs = html_core_attrs + html_i18n + html_events
+html_map_attrs = html_attrs + ['name']
+html_area_attrs = html_attrs + ['shape', 'coords', 'href', 'nohref', 'alt', 'tabindex', 'accesskey']
 
 def _is_URL(text):
     return '://' in text
@@ -73,6 +86,7 @@ def _is_InterWiki(text):
 
 def _is_allowed_Para(para, allowed_paras):
     found = False
+    para += '="'
     for p in allowed_paras:
         if para.startswith(p):
             found = True
@@ -138,7 +152,7 @@ class Parser:
             # and: pic.png;height="10" onmouseover="ExecuteBadCode()";alt="..";
             # and: pic.png;height="10" onmouseover="ExecuteBadCode()";alt="..";
             p = _strip_Para(p)
-            if _is_allowed_Para(p, ['width="', 'height="', 'alt="', 'title="']): 
+            if _is_allowed_Para(p, html_map_attrs): 
                 html += ' %s' % p
                 # Prepare dict for formatter.image if formatter.rawHTML call fails
                 key, value = p.split('=', 1)
@@ -179,7 +193,7 @@ class Parser:
                 # and: FrontPage;shape="rect" onmouseover="ExecuteBadCode()";coords="..";
                 # and: FrontPage;shape="rect" onmouseover="ExecuteBadCode()";coords="..";
                 i = _strip_Para(i) 
-                if _is_allowed_Para(i, ['shape="', 'coords="', 'alt="', 'title="']): 
+                if _is_allowed_Para(i, html_area_attrs): 
                     html += ' %s' % i
             # If there is no alt provided at all, set alt to area_url
             if p.lower().find('alt="') == -1: