#!/usr/bin/python
# written 2003 by Ortwin Glück
# This is free software. Free as in "freedom" and "free beer".
#
# Strips all attachments from an email message
# Expects the message on stdin and writes the 
# output to stdout
import email
import sys

# recursively strips non-text mime parts from a multipart message
# returns true if message is multipart and does not contain any parts
def strip(msg):
        # prerequisite
	if not msg.is_multipart():
		return False
	
	todelete = []  # will hold indices to delete
	# enumerate the parts
	parts = msg.get_payload()
	i = 0
	for part in parts :
		ct = part.get_content_type()
		# check for unsafe content types
		if not ct.startswith('text/') and \
		   not ct.startswith('message/') and \
		   not part.is_multipart() :
		        # mark for deletion (to avoid iterator mess)
			todelete.append(i)
		# recurse
		if strip(part) : todelete.append(i)
		i = i + 1
        # now do the actual delete 
	for i in todelete :
		del parts[i]
	return (len(parts) == 0)

# -- main	
msg = email.message_from_file(sys.stdin) # read from stdin
strip(msg)
print msg.as_string(True);