3 # AttachCheck -- A MTA wrapper to help check outgoing email for
4 # forgotten attachments.
6 # (c) 2005 -- Benjamin Mako Hill <mako@bork.hampshire.edu>
7 # Author/Software Homepage at: http://mako.cc
9 # This software comes with ABSOLUTELY NO WARRANTY.
10 # This is free software and is licensed under the GNU GPL.
12 __copyright__ = "Copyright (c) 2004 Benjamin Mako Hill"
13 __author__ = "Benjamin Mako Hill <mako@debian.org>"
15 ### Configuration Options
16 ###########################################
18 # location of the sendmail binary
19 sendmail = "/usr/sbin/sendmail"
21 # list of mimetype which are, for the sake of this program, not
23 ignored_types = ( "applica/pgp-signat", "application/pgp-signature" )
25 # list of regular expressions which we will view as being indicative
27 attachment_regexes = [ r'\battach(ed|ment|ing)?\b(?im)',
28 r'\balleg(o|at[oaie]|ando)' ]
31 ### No Edit Below This Line
32 ###########################################
43 sendmail = sendmail + " " + " ".join( sys.argv[1:] )
45 mailpipe = os.popen("%s" % sendmail, 'w')
46 mailpipe.write( message_string )
47 sys.exit( mailpipe.close() )
49 ## SUB: print error message
52 """(Your message mentions attachments but does not include any.
56 (1) Add an attachment or add \"CONFIRM\" (in ALLCAPS to beginning of
57 the subject of the message and resend. \"CONFIRM\" will be
58 stripped from your message subject befor the message is sent.
61 (2) Add a \"X-AttachCheck-Override: Yes\" header the message.
63 Read the documentation for AttachCheck for more details."""
65 # get the mail from stdin
66 message_string = sys.stdin.read()
67 message = email.message_from_string( message_string )
69 attachment_expected = False
70 attachment_seen = False
73 for part in message.walk():
75 # check to see if this part is a plain text entry
76 if part.get_content_type() == "text/plain":
78 # if this is the second text block, we should interrate
81 attachment_seen = True
82 # otherwise, mark that we've now seen one text field
86 # search for the word "attach" or "attached" or "attachment"
87 # in the body of the message
88 for regex in attachment_regexes:
90 if re.search( regex, part.get_payload() ):
91 attachment_expected = True
93 # check to see if this mime-type is something we can ignore
94 elif ( re.match( r'message/(?m)', part.get_content_type() ) or
95 re.match( r'multipart/(?m)', part.get_content_type() ) or
96 part.get_content_type() in ignored_types ):
99 # if it's not text and it's an ignored type, it's a seen attachment
101 attachment_seen = True
103 # now check to see if we are expecting an attachment
104 if attachment_expected:
106 # if we are expecting an attachment and we've seen one, we should
107 # send the file and be done with things
111 # if we are expected have not seen it, we need to check to see if
112 # the mail has been confirmed
115 # check for the confirmation
117 if re.search( r'Subject: CONFIRM', message_string ):
118 message_string = re.sub( r'(Subject: )(CONFIRM )(.*?)\n',
119 r'\1\3\n', message_string )
122 elif message.get( 'X-AttachCheck-Override' ) == "Yes":
130 # if we are not expecting anything more, we should send the message