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#!/bin/sh
########################################################
## ez-pine-gpg-sign-and-encrypt ##
## part of ez-pine-gpg v0.4h // gpg filters for pine ##
## http://Business-PHP.com/opensource/ez-pine-gpg/ ##
## (c) 13 Feb 2004, Atom Emet ##
## (c) 16 Dec 2004, Atom Emet ##
## Atom {at} Business-PHP.com ##
## Distributed under the GNU General Public License ##
## http://www.gnu.org/copyleft/gpl.html ##
## ##
## ################################################ ##
## ##
## This program is free software; you can ##
## redistribute it and/or modify it under the terms ##
## of the GNU General Public License as published by ##
## the Free Software Foundation; either version 2 of ##
## the License, or (at your option) any later ##
## version. ##
## ##
## This program is distributed in the hope that it ##
## will be useful, but WITHOUT ANY WARRANTY; without ##
## even the implied warranty of MERCHANTABILITY or ##
## FITNESS FOR A PARTICULAR PURPOSE. See the GNU ##
## General Public License for more details. ##
## ##
## You should have received a copy of the GNU ##
## General Public License along with this program; ##
## if not, write to the ##
## Free Software Foundation, Inc., ##
## 59 Temple Place - Suite 330, ##
## Boston, MA 02111-1307, USA. ##
########################################################
#########################################
## PATH is configured during installation
PATH=/bin:/usr/bin:/home/bnewbold/bin
###################
## clear the screen
clear 1>&2
######################################################
## this compensates for an un-acknowledged bug in pine
stty -f /dev/tty echo
###############################################################
## display notices and give the user an opportunity to bail out
##
echo '#########################################################################' 1>&2
echo '## This message is being processed by ez-pine-gpg v0.4h ##' 1>&2
echo '## http://Business-PHP.com/opensource/ez-pine-gpg/ ##' 1>&2
echo '## (c) 13 Feb 2004, Atom Emet ##' 1>&2
echo '## (c) 16 Dec 2004, Atom Emet ##' 1>&2
echo '## Distributed under the GNU General Public License ##' 1>&2
echo '## See source for details ##' 1>&2
echo '## ##' 1>&2
echo '## This filter signs and encrypts your message. ##' 1>&2
echo '## ##' 1>&2
echo '## (May not be safe for BCC recipients -- see documentation) ##' 1>&2
echo '## ##' 1>&2
echo '## If you want to cancel sending press ^C ##' 1>&2
echo '#########################################################################' 1>&2
#######################################
## function to gracefully handle errors
## if something goes wrong display an error message
## that includes the recipients
##
gpg_failed () {
echo '#########################################################################' 1>&2
echo '## Something went wrong #### See above for more info ##' 1>&2
echo '#########################################################################' 1>&2
echo "## Tried signing message from: ${from}" 1>&2
echo '#########################################################################' 1>&2
echo "## Tried encrypting to: <user>`printf '\011'`(key ID)" 1>&2
for each_recipient in ${@}
do
[ "`echo ${each_recipient} | egrep '@'`" ] && echo "## <${each_recipient}>`printf '\011'`(`gpg --with-colons --list-keys ${each_recipient} 2> /dev/null | egrep ^pub | head -n 1 | cut -d : -f 5`)" 1>&2
done
echo '#########################################################################' 1>&2
########################
## unset these variables
recipients= ; each_recipient= ; from=
#############################################################################
## a non-zero exit status will force pine to recognize that the script failed
## forcing an acknowledgment here will leave diagnostic info visible to user
echo '/////////////////////// Press <ENTER> to continue ///////////////////////' 1>&2
read dead < /dev/tty
clear 1>&2
exit 1
}
###########################################
## do the right thing even if ^C is pressed
##
trap 'echo 1>&2 ; gpg_failed ${@}' 2
##########################################################
## the variable "msg" is the full headers and message body
##
msg="`cat`"
########################################################################
## use "ez-pine-gpg-helper-sender" to find what role is sending the mail
##
from=`echo "${msg}" | ez-pine-gpg-helper-sender`
###############################################
## recipients are passed as arguments from pine
## and processed by "ez-pine-gpg-helper-recipient"
## if a key can't be found for an address then
## bail out with an error message
##
recipients=`ez-pine-gpg-helper-recipient ${@}` || gpg_failed ${@}
################################################################
## pipe the message body (minus headers) into gpg sign + encrypt
## pine will read the signed message from STDOUT
##
cr=`printf '\015'`
echo "${msg}" | sed "1,/^${cr}\$/d" \
| gpg --sign --encrypt --local-user "${from}" --armor ${recipients} || gpg_failed ${recipients}
#############################################
## unset variables that we don't need anymore
##
recipients= ; each_recipient= ; from= ; msg=
#############
## we're done
##
exit 0
|
