#!/bin/sh

# This is an amateur script to send cleartext mixminion messages with Sylpheed-Claws
# from Kai Raven <kairaven@arcor.de> / OpenPGP: D6E995A0.
# Maybe somebody with skills in scripting or graphical GUI design can
# make a better one and/or a nice client.
# License: GPL
#
# You need:
# Sylpheed-Claws
# http://claws.sylpheed.org/
#
# Mixminion
# http://www.mixminion.net/
#
# Xdialog
# http://xdialog.dyns.net/
#
# a temp dir with tmpfs like this one (from fstab) or simply use /tmp
# none                    /tmp/remail          tmpfs   defaults,size=1m       0 0
# Symlink:
# 1. mkdir /tmp/remailer/queue 
# 2. ln -s /tmp/remail/queue ~/.mixminion/queue
#
# Usage:
# 1. Save the script as "syl-mixminion-cleartext" in your path
# 2. Make an action in Sylpheed-Claws: Configuration -> Actions:
#    Menu name: Mixminion/Mixminion
#    Command line: |syl-mixminion-cleartext
# 3. Write a new message and choose Tools -> Actions -> Mixminion ->Mixminion-Cleartext

MIXTMP="/tmp/remail"
SYLTMP="$MIXTMP/syltmp"
MIXS="mixminion send -t"

# ask for message headers, Sylpheed can't supply
HEADER=`Xdialog	--stdout \
		--title "Mixminion - Cleartext" --buttons-style text \
		--left --ok-label Send --cancel-label Abort \
		--3inputsbox "Fill in your pseudonym, recipient's e-mail address and subject" 0 0 \
                 "Pseudonym (nick's firstname surname):" "" \
		 "Recipient's e-mail address:" "" \
		 "Subject:" "" \
		--no-close --no-cancel --no-buttons --infobox "Done" 0 0 1`

ret=$?

case $ret in
	0)
		FROM=`echo $HEADER | awk --source 'BEGIN { FS="|" }' --source '{ print $1 }'`
		TO=`echo $HEADER | awk --source 'BEGIN { FS="|" }' --source '{ print $2 }'`
    		SUBJ=`echo $HEADER | awk --source 'BEGIN { FS="|" }' --source '{ print $3 }'`
		;;
	1)
		shred -uz $MIXTMP/*
    		exit 1
		;;
	255)
		echo "Box closed."
		;;
esac


# get message body from Sylpheed
cat - > $SYLTMP

# create queue in tmpfs dir.
if [ ! -d $MIXTMP/queue ] ; then
    mkdir $MIXTMP/queue
fi

# send mixminion message together with two dummy messages
echo "Sending first dummy message:"
$MIXS drop
echo "Sending your personal mixminion message:"
$MIXS $TO --subject="$SUBJ" --from="$FROM" -i $SYLTMP
echo "Sending second dummy message:"
$MIXS drop

# eliminate any evidence
shred -uz $SYLTMP

exit 0