docker-mailserver/target/bin/delmailuser

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#! /bin/bash
# shellcheck disable=SC2094
# ? This is done to ignore the message "Make sure not to read and write
# ? the same file in the same pipeline", which is a result of ${DATABASE}
# ? being used below. (This disables the message file-wide.)
# shellcheck source=../scripts/helper-functions.sh
. /usr/local/bin/helper-functions.sh
DATABASE=${DATABASE:-/tmp/docker-mailserver/postfix-accounts.cf}
ALIAS_DATABASE="/tmp/docker-mailserver/postfix-virtual.cf"
QUOTA_DATABASE="/tmp/docker-mailserver/dovecot-quotas.cf"
MAILDEL=false
function usage
{
echo "Usage: delmailuser [-y] <user@domain> [<user2@anotherdomain>]"
}
while getopts ":yY" OPT
do
case ${OPT} in
y | Y )
MAILDEL=true
;;
* )
usage
exit 1
;;
esac
done
shift $((OPTIND-1))
[[ -z ${*} ]] && { usage ; errex "No user specifed" ; }
[[ -s ${DATABASE} ]] || exit 0
if ! ${MAILDEL}
then
read -r -p "Do you want to delete the mailbox as well (removing all mails) ? [Y/n] " MAILDEL_CHOSEN
[[ ${MAILDEL_CHOSEN} =~ (y|Y| ) ]] && MAILDEL=true
fi
(
flock -e 200
for USER in "${@}"
do
# very simple plausibility check
[[ ${USER} != *'@'*'.'* ]] && errex "No valid address: ${USER}"
declare -a MAILARR
MAILARR[0]="${USER%@*}"
MAILARR[1]="${USER#*@}"
# ${USER} must not contain /s and other syntactic characters
USER=$(escape "${USER}")
if [[ -f ${DATABASE} ]]
then
if ! sed -i "/^${USER}|/d" "${DATABASE}"
then
errex "${USER} couldn't be deleted in ${DATABASE}. ${?}"
fi
fi
if [[ -f ${ALIAS_DATABASE} ]]
then
# delete all aliases where the user is the only recipient( " ${USER$}" )
# delete user only for all aliases that deliver to multiple recipients ( ",${USER}" "${USER,}" )
if sed -i \
-e "/ ${USER}$/d" -e "s/,${USER}//g" -e "s/${USER},//g" \
"${ALIAS_DATABASE}"
then
echo "${USER} and potential aliases deleted."
else
errex "Aliases for ${USER} couldn't be deleted in ${ALIAS_DATABASE}."
fi
fi
# remove quota directives
if [[ -f ${QUOTA_DATABASE} ]]
then
if ! sed -i -e "/^${USER}:.*$/d" "${QUOTA_DATABASE}"
then
errex "Quota for ${USER} couldn't be deleted in ${QUOTA_DATABASE}."
fi
fi
if ! ${MAILDEL}
then
echo "Leaving the mailbox untouched. If you want to delete it at a later point use 'sudo docker exec mail rm -R /var/mail/${MAILARR[1]}/${MAILARR[0]}'"
exit 0
fi
if [[ -d "/var/mail/${MAILARR[1]}/${MAILARR[0]}" ]]
then
if rm -r -f "/var/mail/${MAILARR[1]}/${MAILARR[0]}"
then
echo "Mailbox deleted."
else
errex "Mailbox couldn't be deleted."
fi
else
errex "Mailbox directory '/var/mail/${MAILARR[1]}/${MAILARR[0]}' does not exist."
fi
done
) 200< "${DATABASE}"