Scan other text/* parts for Approve(d): <password> - bug 1181161.

1 files changed, 29 insertions, 1 deletions

diff --git a/Mailman/Handlers/Approve.py b/Mailman/Handlers/Approve.py
index 483ac21c..53fac181 100644
--- a/Mailman/Handlers/Approve.py
+++ b/Mailman/Handlers/Approve.py
@@ -22,6 +22,8 @@ denied.  Situations that could hold a message for approval or confirmation are
 not tested by this module.
 """
 
+import re
+
 from email.Iterators import typed_subpart_iterator
 
 from Mailman import mm_cfg
@@ -49,6 +51,7 @@ def process(mlist, msg, msgdata):
     if passwd is missing:
         # Find the first text/plain part in the message
         part = None
+        stripped = False
         for part in typed_subpart_iterator(msg, 'text', 'plain'):
             break
         # XXX I'm not entirely sure why, but it is possible for the payload of
@@ -68,7 +71,32 @@ def process(mlist, msg, msgdata):
                     # Now strip the first line from the payload so the
                     # password doesn't leak.
                     del lines[lineno]
-                    part.set_payload(NL.join(lines[0:]))
+                    part.set_payload(NL.join(lines))
+                    stripped = True
+        if stripped:
+            # MAS: Bug 1181161 - Now try all the text parts in case
+            # it's multipart/alternative with the approved line in
+            # HTML or other text part. We make a pattern from the
+            # approved line and delete it from all text/* parts in
+            # which we find it. It would be better to just iterate
+            # forward, but email compatability for pre Python 2.2
+            # returns a list, not a true iterator.
+            # This will process all the multipart/alternative parts
+            # in the message as well as all other text parts. We
+            # shouldn't find the pattern outside the mp/a parts, but
+            # if we do, it is probably best to delete it anyway as it
+            # does contain the password.
+            # Make a pattern to delete. We can't just delete a line
+            # because line of HTML or other fancy text may include
+            # additional message text. This pattern works with HTML.
+            # It may not work with rtf or whatever else is possible.
+            pattern = name + ':(\s| )*' + re.escape(passwd)
+            for part in typed_subpart_iterator(msg, 'text'):
+                if part is not None and part.get_payload() is not None:
+                    # Should we decode the payload?
+                    lines = part.get_payload()
+                    if re.search(pattern, lines):
+                        part.set_payload(re.sub(pattern, '', lines))
     if passwd is not missing and mlist.Authenticate((mm_cfg.AuthListModerator,
                                                      mm_cfg.AuthListAdmin),
                                                     passwd):