improve trapping and cleanup in sendmail wrapper

[etc/mutt.git] / .mutt / sendmail

diff --git a/.mutt/sendmail b/.mutt/sendmail
index 3096fb05194641f21c5f4e903bd12ec5da4a9938..27458142c7505f677b009fa134dea466e9e46247 100755 (executable)
--- a/.mutt/sendmail
+++ b/.mutt/sendmail
@@ -1,5 +1,28 @@
 #!/bin/sh
 #!/bin/sh

+#
+# mutt/sendmail – sendmail wrapper to enforce some checks on outgoing mails
+#
+# The script basically just creates a temporary file and then invokes any
+# executable scripts in ~/.mutt/sendmail-checks.d in run-parts style. They
+# receive the filename of a temporary file holding the message to be sent as
+# $1, followed by all recipients as determined by mutt.
+#
+# Copyright © 2010 martin f. krafft <madduck@madduck.net>
+# Released under the terms of the Artistic Licence 2.0
+#

 set -eu
 
 set -eu
 

-OUTGOING=~/mail-seamus/outgoing
-exec safecat $OUTGOING/tmp $OUTGOING/cur
+CHECKSDIR="$HOME/.mutt/sendmail-checks.d"
+SENDMAIL="/usr/sbin/sendmail -oem -oi"
+
+TMPFILE=$(tempfile -p mutt-sendmail -s .msg)
+settrap () { trap "$@" 0 1 2 3 4 5 6 7 8 10 11 12 13 14 15; }
+cleanup () { rm -f "$TMPFILE"; settrap -; }
+settrap cleanup
+
+cat > $TMPFILE
+args=$(for a in $@; do [ $a = -- ] || echo "--arg=$a"; done)
+run-parts --umask=0077 --arg="$TMPFILE" $args -- "$CHECKSDIR"
+$SENDMAIL -- "$@" < "$TMPFILE"
+
+cleanup