ab-docker/postfix-smtp-relay
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feature(scripts): allow providing own config

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This commit is contained in:
Asif Bacchus 2021-05-13 13:53:49 -06:00
parent 713c5fa2ad
commit 3f8ab5d378
1 changed files with 74 additions and 58 deletions
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132
entrypoint.sh
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@ -8,70 +8,86 @@ convertCase () {
printf "%s" "$1" | tr "[:lower:]" "[:upper:]"
}
printf "\nVerifying environment variables... "
if [ -f "/etc/postfix/main.cf.override" ]; then
# use provided configuration file
printf "\nAppending provided MAIN configuration... "
cat /etc/postfix/main.cf.override >> /etc/postfix/main.cf
\rm -f /tmp/main.cf.insert
else
# process auto-setup
printf "\nVerifying environment variables... "
# check for missing environment variable values
if [ -z "$SMARTHOST" ]; then
printf "\nYou must specify the hostname or IP address of a smarthost where mail should be relayed.\n\n"
fi
if [ -z "$SMARTHOST_USERNAME" ]; then
printf "\nYou must provide a username for smarthost authentication.\n\n"
fi
if [ -z "$SMARTHOST_PASSWORD" ]; then
printf "\nYou must provide a password for smarthost authentication.\n\n"
fi
# check for missing environment variable values
if [ -z "$SMARTHOST" ]; then
printf "\nYou must specify the hostname or IP address of a smarthost where mail should be relayed.\n\n"
fi
if [ -z "$SMARTHOST_USERNAME" ]; then
printf "\nYou must provide a username for smarthost authentication.\n\n"
fi
if [ -z "$SMARTHOST_PASSWORD" ]; then
printf "\nYou must provide a password for smarthost authentication.\n\n"
fi
# set failsafes
[ -z "$SMARTHOST_PORT" ] && SMARTHOST_PORT=587
[ -z "$LOCAL_HOSTNAME" ] && LOCAL_HOSTNAME="smarthost"
[ -z "$LOCAL_DOMAINNAME" ] && LOCAL_DOMAINNAME="${LOCAL_HOSTNAME#*.}"
# set failsafes
[ -z "$SMARTHOST_PORT" ] && SMARTHOST_PORT=587
[ -z "$LOCAL_HOSTNAME" ] && LOCAL_HOSTNAME="smarthost"
[ -z "$LOCAL_DOMAINNAME" ] && LOCAL_DOMAINNAME="${LOCAL_HOSTNAME#*.}"
printf "done\n"
printf "updating configuration files... "
# update main.cf
sed -i "s/{LOCAL_HOSTNAME}/${LOCAL_HOSTNAME}/" /tmp/main.cf.insert
sed -i "s/{LOCAL_DOMAINNAME}/${LOCAL_DOMAINNAME}/" /tmp/main.cf.insert
sed -i "s/{SMARTHOST}/${SMARTHOST}/" /tmp/main.cf.insert
sed -i "s/{SMARTHOST_PORT}/${SMARTHOST_PORT}/" /tmp/main.cf.insert
sed -i "s/{SMARTHOST_USERNAME}/${SMARTHOST_USERNAME}/" /tmp/main.cf.insert
sed -i "s/{SMARTHOST_PASSWORD}/${SMARTHOST_PASSWORD}/" /tmp/main.cf.insert
LOCAL_ENCRYPTION="$(convertCase "$LOCAL_ENCRYPTION")"
case "$LOCAL_ENCRYPTION" in
OPT*)
sed -i 's/{LOCAL_ENCRYPTION}/may/' /tmp/main.cf.insert
sed -i 's/#smtpd_/smtpd_/g' /tmp/main.cf.insert
;;
TRUE)
sed -i 's/{LOCAL_ENCRYPTION}/encrypt/' /tmp/main.cf.insert
sed -i 's/#smtpd_/smtpd_/g' /tmp/main.cf.insert
;;
*)
sed -i 's/{LOCAL_ENCRYPTION}//' /tmp/main.cf.insert
;;
esac
SMARTHOST_ENCRYPTION="$(convertCase "$SMARTHOST_ENCRYPTION")"
case "$SMARTHOST_ENCRYPTION" in
OPT*)
sed -i 's/{SMARTHOST_ENCRYPTION}/may/' /tmp/main.cf.insert
;;
TRUE)
sed -i 's/{SMARTHOST_ENCRYPTION}/secure/' /tmp/main.cf.insert
;;
*)
sed -i 's/{SMARTHOST_ENCRYPTION}/none/' /tmp/main.cf.insert
;;
esac
# append configuration and remove temp file
cat /tmp/main.cf.insert >> /etc/postfix/main.cf
\rm -f /tmp/main.cf.insert
fi
printf "done\n"
printf "updating configuration files... "
# update main.cf
sed -i "s/{LOCAL_HOSTNAME}/${LOCAL_HOSTNAME}/" /tmp/main.cf.insert
sed -i "s/{LOCAL_DOMAINNAME}/${LOCAL_DOMAINNAME}/" /tmp/main.cf.insert
sed -i "s/{SMARTHOST}/${SMARTHOST}/" /tmp/main.cf.insert
sed -i "s/{SMARTHOST_PORT}/${SMARTHOST_PORT}/" /tmp/main.cf.insert
sed -i "s/{SMARTHOST_USERNAME}/${SMARTHOST_USERNAME}/" /tmp/main.cf.insert
sed -i "s/{SMARTHOST_PASSWORD}/${SMARTHOST_PASSWORD}/" /tmp/main.cf.insert
LOCAL_ENCRYPTION="$(convertCase "$LOCAL_ENCRYPTION")"
case "$LOCAL_ENCRYPTION" in
OPT*)
sed -i 's/{LOCAL_ENCRYPTION}/may/' /tmp/main.cf.insert
sed -i 's/#smtpd_/smtpd_/g' /tmp/main.cf.insert
;;
TRUE)
sed -i 's/{LOCAL_ENCRYPTION}/encrypt/' /tmp/main.cf.insert
sed -i 's/#smtpd_/smtpd_/g' /tmp/main.cf.insert
;;
*)
sed -i 's/{LOCAL_ENCRYPTION}//' /tmp/main.cf.insert
;;
esac
SMARTHOST_ENCRYPTION="$(convertCase "$SMARTHOST_ENCRYPTION")"
case "$SMARTHOST_ENCRYPTION" in
OPT*)
sed -i 's/{SMARTHOST_ENCRYPTION}/may/' /tmp/main.cf.insert
;;
TRUE)
sed -i 's/{SMARTHOST_ENCRYPTION}/secure/' /tmp/main.cf.insert
;;
*)
sed -i 's/{SMARTHOST_ENCRYPTION}/none/' /tmp/main.cf.insert
;;
esac
cat /tmp/main.cf.insert >> /etc/postfix/main.cf
rm -f /tmp/main.cf.insert
# update master.cf
sed -i 's/#tlsproxy/tlsproxy/' /etc/postfix/master.cf
if [ -f "/etc/postfix/master.cf.override" ]; then
# use provided configuration file
printf "\nUsing provided MASTER configuration... "
\cp --force /etc/postfix/master.cf.override /etc/postfix/master.cf
else
# update master.cf
sed -i 's/#tlsproxy/tlsproxy/' /etc/postfix/master.cf
fi
printf "done\n"
printf "container setup complete!\n"
# run CMD passed to this container