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84 lines
1.9 KiB
Python
84 lines
1.9 KiB
Python
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#!/usr/bin/env python
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"""Unpack a MIME message into a directory of files.
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Usage: unpackmail [options] msgfile
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Options:
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-h / --help
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Print this message and exit.
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-d directory
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--directory=directory
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Unpack the MIME message into the named directory, which will be
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created if it doesn't already exist.
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msgfile is the path to the file containing the MIME message.
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"""
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import sys
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import os
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import getopt
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import errno
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import mimetypes
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import email
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def usage(code, msg=''):
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print >> sys.stderr, __doc__
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if msg:
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print >> sys.stderr, msg
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sys.exit(code)
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def main():
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try:
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opts, args = getopt.getopt(sys.argv[1:], 'hd:', ['help', 'directory='])
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except getopt.error, msg:
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usage(1, msg)
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dir = os.curdir
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for opt, arg in opts:
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if opt in ('-h', '--help'):
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usage(0)
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elif opt in ('-d', '--directory'):
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dir = arg
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try:
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msgfile = args[0]
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except IndexError:
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usage(1)
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try:
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os.mkdir(dir)
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except OSError, e:
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# Ignore directory exists error
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if e.errno <> errno.EEXIST: raise
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fp = open(msgfile)
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msg = email.message_from_file(fp)
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fp.close()
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counter = 1
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for part in msg.walk():
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# multipart/* are just containers
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if part.get_content_maintype() == 'multipart':
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continue
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# Applications should really sanitize the given filename so that an
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# email message can't be used to overwrite important files
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filename = part.get_filename()
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if not filename:
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ext = mimetypes.guess_extension(part.get_type())
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if not ext:
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# Use a generic bag-of-bits extension
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ext = '.bin'
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filename = 'part-%03d%s' % (counter, ext)
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counter += 1
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fp = open(os.path.join(dir, filename), 'wb')
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fp.write(part.get_payload(decode=1))
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fp.close()
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if __name__ == '__main__':
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main()
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