3 # AttachCheck -- A MTA wrapper to help check outgoing email for
4 # forgotten attachments.
6 # (c) 2004-2009 -- Benjamin Mako Hill <mako@atdot.cc>
7 # Software Homepage at: http://mako.cc/projects/attachcheck
9 # This program is free software: you can redistribute it and/or modify
10 # it under the terms of the GNU General Public License as published by
11 # the Free Software Foundation, either version 3 of the License, or (at
12 # your option) any later version.
14 # This program is distributed in the hope that it will be useful, but
15 # WITHOUT ANY WARRANTY; without even the implied warranty of
16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 # General Public License for more details.
19 # You should have received a copy of the GNU General Public License
20 # along with this program. If not, see <http://www.gnu.org/licenses/>.
22 __copyright__ = "Copyright (c) 2004-2009 Benjamin Mako Hill"
23 __author__ = "Benjamin Mako Hill <mako@atdot.cc>"
25 ### Configuration Options
26 ###########################################
28 # location of the sendmail binary
29 sendmail = "/usr/sbin/sendmail"
31 # list of mimetype which are, for the sake of this program, not
33 ignored_types = ( "applica/pgp-signat", "application/pgp-signature" )
35 # list of regular expressions which we will view as being indicative
37 attachment_regexes = [ r'\battach(ed|ment|ing)?\b(?im)',
38 r'\balleg(o|at[oaie]|ando)' ]
41 ### No Edit Below This Line
42 ###########################################
53 sendmail = sendmail + " " + " ".join( sys.argv[1:] )
55 mailpipe = os.popen("%s" % sendmail, 'w')
56 mailpipe.write( message_string )
57 sys.exit( mailpipe.close() )
59 ## SUB: print error message
62 """(Your message mentions attachments but does not include any.
66 (1) Add an attachment or add \"CONFIRM\" (in ALLCAPS to beginning of
67 the subject of the message and resend. \"CONFIRM\" will be
68 stripped from your message subject befor the message is sent.
71 (2) Add a \"X-AttachCheck-Override: Yes\" header the message.
73 Read the documentation for AttachCheck for more details."""
75 # get the mail from stdin
76 message_string = sys.stdin.read()
77 message = email.message_from_string( message_string )
79 attachment_expected = False
80 attachment_seen = False
83 for part in message.walk():
85 # check to see if this part is a plain text entry
86 if part.get_content_type() == "text/plain":
88 # if this is the second text block, we should interrate
91 attachment_seen = True
92 # otherwise, mark that we've now seen one text field
96 # search for the word "attach" or "attached" or "attachment"
97 # in the body of the message
98 for regex in attachment_regexes:
100 if re.search( regex, part.get_payload() ):
101 attachment_expected = True
103 # check to see if this mime-type is something we can ignore
104 elif ( re.match( r'message/(?m)', part.get_content_type() ) or
105 re.match( r'multipart/(?m)', part.get_content_type() ) or
106 part.get_content_type() in ignored_types ):
109 # if it's not text and it's an ignored type, it's a seen attachment
111 attachment_seen = True
113 # now check to see if we are expecting an attachment
114 if attachment_expected:
116 # if we are expecting an attachment and we've seen one, we should
117 # send the file and be done with things
121 # if we are expected have not seen it, we need to check to see if
122 # the mail has been confirmed
125 # check for the confirmation
127 if re.search( r'Subject: CONFIRM', message_string ):
128 message_string = re.sub( r'(Subject: )(CONFIRM)(.*?)\n',
129 r'\1\3\n', message_string )
132 elif message.get( 'X-AttachCheck-Override' ) == "Yes":
140 # if we are not expecting anything more, we should send the message