Extract nested attachments (msg in msg)

[jbfuzier]

A quick addition to extract attachments from nested msg (an msg attached in a msg is not handled as a standard attachement)

My use case is to extract all the attachment I can to do some analysis on extracted file.

I have not thought on how to handle nested message body, cc, to..

[moshekaplan]

I had the same issue that I was unable to retrieve data for attached MSG files.

Does this chance break any existing functionality?

[mattgwwalker]

Please give it a try. I'd love to have feedback. It would greatly help me if you could also include some test msg files that contained msg files as attachments. This would allow us to implement some automated testing for example.

[moshekaplan]

Here is a sample file you can use to replicate the issue:
msg_inside_of_msg.zip

Here is my sample code:

    fname = sys.argv[1]
    msg = Message(fname)
    for attachment in msg.attachments:
        filename = attachment.longFilename
        # Otherwise use the short filename
        if filename is None:
            filename = attachment.shortFilename
        # Otherwise just make something up!
        if filename is None:
            print "Filename missing"
        print "Size:", len(attachment.data)

Output:

Filename missing
Size:
Traceback (most recent call last):
File "msg.py", line 536, in
print "Size:", len(attachment.data)
TypeError: object of type 'NoneType' has no len()

[TheElementalOfDestruction]

Fixed in most recent update. If you believe the issue still exists, please open a new issue thread.