docker-mailserver/target/bin/updatemailuser
Georg Lauterbach da8171388f
Complete Refactor for target/bin (#1654)
* documentation and script updates trying to fix #1647
* preparations for refactoring target/bin/
* complete refactor for target/bin/
* changing script output slightly
* outsourcing functions in `bin-helper.sh`
* re-wrote linting to allow for proper shellcheck -x execution
* show explanation for shellcheck ignore
* adding some more information
2020-10-21 18:16:32 +02:00

36 lines
1 KiB
Bash
Executable file

#! /bin/bash
# ? 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 ${DATABASE}
# ? being used below. (This disables the message file-wide.)
# shellcheck disable=SC2094
# shellcheck source=../bin-helper.sh
. /usr/local/bin/bin-helper.sh
DATABASE=${DATABASE:-/tmp/docker-mailserver/postfix-accounts.cf}
USER="${1}"
shift
PASSWD="${*}"
function usage { echo "Usage: updatemailuser <user@domain.tld> [password]" ; }
[[ -z ${USER} ]] && { usage ; errex "no username specified" ; }
if [[ -z ${PASSWD} ]]
then
read -r -s -p "Enter Password: " PASSWD
echo
[[ -z ${PASSWD} ]] && errex "Password must not be empty"
fi
HASH="$(doveadm pw -s SHA512-CRYPT -u "${USER}" -p "${PASSWD}")"
# Protect config file with lock to avoid race conditions
(
flock -e 200
grep -qi "^$(escape "${USER}")|" "${DATABASE}" 2>/dev/null || errex "User \"${USER}\" does not exist"
sed -i "s ^""${USER}""|.* ""${USER}""|""${HASH}"" " "${DATABASE}"
) 200< "${DATABASE}"