]> git.madduck.net Git - etc/mutt.git/blob - .mutt/sendmail-checks.d/ack-recipients

madduck's git repository

Every one of the projects in this repository is available at the canonical URL git://git.madduck.net/madduck/pub/<projectpath> — see each project's metadata for the exact URL.

All patches and comments are welcome. Please squash your changes to logical commits before using git-format-patch and git-send-email to patches@git.madduck.net. If you'd read over the Git project's submission guidelines and adhered to them, I'd be especially grateful.

SSH access, as well as push access can be individually arranged.

If you use my repositories frequently, consider adding the following snippet to ~/.gitconfig and using the third clone URL listed for each project:

[url "git://git.madduck.net/madduck/"]
  insteadOf = madduck:

store sha256sums instead of plain addresses for privacy reasons
[etc/mutt.git] / .mutt / sendmail-checks.d / ack-recipients
1 #!/bin/sh
2 #
3 # ack-recipients – require double-checking of some recipients
4 #
5 # refuse to send a mail as long as recipients listed in ~/.mutt/ack-recipients
6 # are not individually "signed-off" by adding their e-mail addresses to the
7 # X-Acked header. This header is removed from the mail before it is sent.
8 #
9 # The file ~/.mutt/ack-recipients stores sha256sums of lower-cased e-mail
10 # addresses (no newline) instead of the addresses themselves as a measure to
11 # protect privacy. You can get new lines like this:
12 #
13 #   printf my.new@e-mail.addre.ss | tr [[:upper:]] [[:lower:]] \
14 #     | sha256sum | sed -e 's, .*,,'
15 #
16 # E.g. my address (see below) will become
17 #   84d5b33c9376f67274c2ec9ce0e03b6973fb8bc943ebd7abb470c903c47e00f4
18 #
19 # Copyright © 2010 martin f. krafft <madduck@madduck.net>
20 # Released under the terms of the Artistic Licence 2.0
21 #
22 set -eu
23
24 CHECKLIST="$HOME/.mutt/ack-recipients"
25 HEADER=X-Acked
26 ACKED_RCPTS=$(formail -czx ${HEADER}: < $1 | tr -d ',')
27 MAILFILE="$1"; shift
28
29 ret=0
30 for r in $@; do
31   ack=0
32   # check if this recipient is in the list of acked recipients
33   for a in $ACKED_RCPTS; do [ $a = $r ] && ack=1 && break; done
34   rs=$(printf $r | tr [[:upper:]] [[:lower:]] | sha256sum)
35   # now check if this unacked recipient needs to be acked
36   if [ $ack -eq 0 ] && grep -q "^${rs%% *}$" "$CHECKLIST"; then
37     echo >&2 "E: will not send mail until $r has been added to the $HEADER header"
38     ret=1
39   fi
40 done
41
42 [ $ret -eq 0 ] || exit $ret
43
44 # now remove the X-Acked header from the mail
45 TMPFILE=$(tempfile -p mutt-sendmail -s .msg)
46 settrap () { trap "$@" 0 1 2 3 4 5 6 7 8 10 11 12 13 14 15; }
47 cleanup () { rm -f "$TMPFILE"; settrap -; }
48 settrap cleanup
49 formail -I ${HEADER}: < "$MAILFILE" > "$TMPFILE"
50 mv "$TMPFILE" "$MAILFILE"
51 settrap -