# This file should clear the file from all attachments which are not text.
# the use of the script is killAttach.py <nameofThemessage> the name of the
# message is simply the name of the (MIME) file in which the message is saved.
# Of course this means that the file contains one and only one message.
#
# The attachments are extracted in a temporary directory
# the directory simply is given as a constant.
# see the constant ATTACHMENTS_DIR
#
# This script is well suited to be used with the sylpheed mail client,
# symply define an action "killAttachments" where the action to be
# called is
# <path_1>python <path_2>\killAttach.py %f
#
# where path_1 is the path to python executable (or none if it is in the path)
# REMEMBER: It NEEDS python 2.2
#
# path_2 is simply the path to the killAttach.py script
# or none if it is already in the path.
#
#
#
# the script could also be used alone, of course, simply call it with the
# argument as the file
#
#
# This software is licensed under the GNU Open Source License
# Copyright(c) 2003 Pasqualino Ferrentino
# ferrentino_p@yahoo.it
import sys, email, os, mimetypes, errno
ATTACHMENTS_DIR = "d:\\temp\\attach\\"
def main():
#first of all I take the arguments
if len(sys.argv)!=2:
print "I need the name of the message to purge!"
sys.exit(1)
#open the file
try:
myMessageInFile = open(sys.argv[1])
except IOError:
print "no file!"
sys.exit(1)
#I parse the message to be filtered
try:
myMessage = email.message_from_file(myMessageInFile)
myMessageInFile.close()
#try:
# os.rename(sys.argv[1], sys.argv[1] + "~")
#except OSError:
# os.remove(sys.argv[1] + "~")
# os.rename(sys.argv[1], sys.argv[1] + "~")
except email.Errors.HeaderParseError:
print "Corrupt message!"
sys.exit(1)
if ( not myMessage.is_multipart()):
print "nothing to do!"
sys.exit(0)
purgeThisMessageFromTheAttachments(myMessage)
#Now the message should be purged
#print myMessage.as_string()
print "message %s successfully purged!" % (sys.argv[1])
#I save it to the file
outfile = open (sys.argv[1], "w")
outfile.write (myMessage.as_string())
outfile.close()
def purgeThisMessageFromTheAttachments(aMessage):
""" this function is recursive, if the message contains
multipart message the function is recursively called to
purge all the attachments"""
partsToDelete = [] #empty list
index = 0
list = aMessage.get_payload()
#end of recursion, the payload is a string
if type(list) == type(""):
return
for part in list:
maintype = part.get_content_maintype()
print maintype
#I mark this part for delete, because it is not text
if ( maintype != "text" and maintype != "multipart" and
maintype != "message"):
# Also the message type is a kind of multipart
partsToDelete.append(index)
if (maintype == "multipart" or maintype == "message"):
#recursive call
purgeThisMessageFromTheAttachments(part)
index = index + 1
#I can now delete the parts
listParts = aMessage.get_payload()
offset = 0
#DEBUG prints
#print "I should delete these parts"
#print partsToDelete
#print "The message has these parts"
#print listParts
for indexToDelete in partsToDelete:
#print indexToDelete
indexToDelete = indexToDelete - offset
#let's save the part that we wish to delete.
filename = listParts[indexToDelete].get_filename()
if not filename:
ext = mimetypes.guess_extension(part.get_type())
if not ext:
#generic extension
ext = ".bin"
filename = "part-%03d%s" % (indexToDelete, ext)
fp = open (ATTACHMENTS_DIR + filename, "wb")
fp.write(listParts[indexToDelete].get_payload(decode=1))
fp.close()
del listParts[indexToDelete]
offset = offset + 1
#print listParts
#let's call the main
if __name__ == "__main__":
main()
