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mail2members/mail2members.sh

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#!/bin/sh
usage()
{
echo "usage"
echo "====="
echo ""
echo "reads a csv-file with member-data and a text-template from template"
echo "uses erb to fill the template with data, encrpyt and sign the mail with the members public pgp key and send it via swaks(swiss army knife for smtp)"
echo ""
echo "./$0"
echo "\t-h --help"
echo "\t--member-data=member-data.csv"
echo "\t--template=template.erb"
echo "\t--subject=subject"
echo "\t--smtphost=smtphost"
echo "\t--smtpuser=smtpuser"
echo "\t--smtppassword=smtppassword"
echo ""
}
while [ "$1" != "" ]; do
PARAM=`echo $1 | awk -F= '{print $1}'`
VALUE=`echo $1 | awk -F= '{print $2}'`
case $PARAM in
-h | --help)
usage
exit
;;
-n)
DRYRUN=1
;;
--member-data)
MEMBER_DATA=$VALUE
;;
--template)
TEMPLATE=$VALUE
;;
--subject)
SUBJECT=$VALUE
;;
--smtphost)
SMTPHOST=$VALUE
;;
--smtpuser)
SMTPUSER=$VALUE
;;
--smtppassword)
SMTPPASSWORD=$VALUE
;;
*)
echo "ERROR: unknown parameter \"$PARAM\""
usage
exit 1
;;
esac
shift
done
if [ -z "$MEMBER_DATA" ] ; then
echo "parameter member-data missing"
echo ""
usage
exit
fi
if [ -z "$TEMPLATE" ] ; then
echo "parameter template missing"
echo ""
usage
exit
fi
if [ -z "$SUBJECT" ] ; then
echo "parameter userid missing"
echo ""
exit
fi
echo "MEMBER_DATA = "$MEMBER_DATA
echo "TEMPLATE = "$TEMPLATE
echo "SUBJECT = "$SUBJECT
# we read the columns from $MEMBER_DATA file into these variables
# variables are used in script and also overhanded to erb
while IFS="," read -r lineno nick email fingerprint passwort
do
echo "Displaying Record-$lineno"
echo "Nick: $nick"
echo "email: $email"
echo "fingerprint: $fingerprint"
# echo "passwort: $passwort"
echo "-------"
if [ -z "$DRYRUN" ] ; then
# we take over nick and passwort into the erb template
# TODO this is not a generic solution !!!
# the file $TEMPLATE contains the erb template
#
# gpg uses the trust-model always
#
# swaks uses the other variables for sending per SMTP
# to mailhost
erb nick="$nick" passwort="$passwort" $TEMPLATE \
| gpg2 -vvv --trust-model always\
-u vorstand@wtf-eg.de \
--no-emit-version \
-eas -r ${fingerprint// /} \
| swaks --to "$email" \
--from "vorstand@wtf-eg.de" \
-tls \
--auth LOGIN \
--server $SMTPHOST \
--auth-user $SMTPUSER \
--auth-password $SMTPPASSWORD \
--header "Subject: $SUBJECT" --body -
else
erb nick="$nick" passwort="$passwort" $TEMPLATE
erb nick="$nick" passwort="$passwort" $TEMPLATE \
| gpg2 -vvv --trust-model always\
-u vorstand@wtf-eg.de \
--no-emit-version \
-eas -r ${fingerprint// /}
fi
done < $MEMBER_DATA