docker-mailserver/target/check_for_changes.sh

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#! /bin/bash
# Prevent a start too early
sleep 5
# change directory
cd /tmp/docker-mailserver
# Update / generate after start
echo 'Makeing new chksum'
sha512sum --tag postfix-accounts.cf --tag postfix-virtual.cf > chksum
# Run forever
while true; do
# Check postfix-virtual.cf exist else break
if [ ! -f postfix-virtual.cf ]; then
echo 'postfix-virtual.cf is missing! exit!'
break;
fi
# Check postfix-accounts.cf exist else break
if [ ! -f postfix-accounts.cf ]; then
echo 'postfix-accounts.cf is missing! exit!'
break;
fi
# Get chksum and check it.
chksum=$(sha512sum -c chksum)
resu_acc=${chksum:21:2}
resu_vir=${chksum:44:2}
if ! [ $resu_acc = "OK" ] || ! [ $resu_vir = "OK" ]; then
echo "CHANGE DETECT"
#regen postfix accounts.
echo -n > /etc/postfix/vmailbox
echo -n > /etc/dovecot/userdb
if [ -f /tmp/docker-mailserver/postfix-accounts.cf -a "$ENABLE_LDAP" != 1 ]; then
sed -i 's/\r//g' /tmp/docker-mailserver/postfix-accounts.cf
echo "# WARNING: this file is auto-generated. Modify config/postfix-accounts.cf to edit user list." > /etc/postfix/vmailbox
# Checking that /tmp/docker-mailserver/postfix-accounts.cf ends with a newline
sed -i -e '$a\' /tmp/docker-mailserver/postfix-accounts.cf
chown dovecot:dovecot /etc/dovecot/userdb
chmod 640 /etc/dovecot/userdb
sed -i -e '/\!include auth-ldap\.conf\.ext/s/^/#/' /etc/dovecot/conf.d/10-auth.conf
sed -i -e '/\!include auth-passwdfile\.inc/s/^#//' /etc/dovecot/conf.d/10-auth.conf
# Creating users
# 'pass' is encrypted
# comments and empty lines are ignored
grep -v "^\s*$\|^\s*\#" /tmp/docker-mailserver/postfix-accounts.cf | while IFS=$'|' read login pass
do
# Setting variables for better readability
user=$(echo ${login} | cut -d @ -f1)
domain=$(echo ${login} | cut -d @ -f2)
# Let's go!
echo "${login} ${domain}/${user}/" >> /etc/postfix/vmailbox
# User database for dovecot has the following format:
# user:password:uid:gid:(gecos):home:(shell):extra_fields
# Example :
# ${login}:${pass}:5000:5000::/var/mail/${domain}/${user}::userdb_mail=maildir:/var/mail/${domain}/${user}
echo "${login}:${pass}:5000:5000::/var/mail/${domain}/${user}::" >> /etc/dovecot/userdb
mkdir -p /var/mail/${domain}
if [ ! -d "/var/mail/${domain}/${user}" ]; then
maildirmake.dovecot "/var/mail/${domain}/${user}"
maildirmake.dovecot "/var/mail/${domain}/${user}/.Sent"
maildirmake.dovecot "/var/mail/${domain}/${user}/.Trash"
maildirmake.dovecot "/var/mail/${domain}/${user}/.Drafts"
echo -e "INBOX\nSent\nTrash\nDrafts" >> "/var/mail/${domain}/${user}/subscriptions"
touch "/var/mail/${domain}/${user}/.Sent/maildirfolder"
fi
# Copy user provided sieve file, if present
test -e /tmp/docker-mailserver/${login}.dovecot.sieve && cp /tmp/docker-mailserver/${login}.dovecot.sieve /var/mail/${domain}/${user}/.dovecot.sieve
echo ${domain} >> /tmp/vhost.tmp
done
fi
# regen postfix aliases
echo -n > /etc/postfix/virtual
echo -n > /etc/postfix/regexp
if [ -f /tmp/docker-mailserver/postfix-virtual.cf ]; then
# Copying virtual file
cp -f /tmp/docker-mailserver/postfix-virtual.cf /etc/postfix/virtual
while read from to
do
# Setting variables for better readability
uname=$(echo ${from} | cut -d @ -f1)
domain=$(echo ${from} | cut -d @ -f2)
# if they are equal it means the line looks like: "user1 other@domain.tld"
test "$uname" != "$domain" && echo ${domain} >> /tmp/vhost.tmp
done < /tmp/docker-mailserver/postfix-virtual.cf
fi
if [ -f /tmp/docker-mailserver/postfix-regexp.cf ]; then
# Copying regexp alias file
cp -f /tmp/docker-mailserver/postfix-regexp.cf /etc/postfix/regexp
sed -i -e '/^virtual_alias_maps/{
s/ regexp:.*//
s/$/ regexp:\/etc\/postfix\/regexp/
}' /etc/postfix/main.cf
fi
# Set vhost
if [ -f /tmp/vhost.tmp ]; then
cat /tmp/vhost.tmp | sort | uniq > /etc/postfix/vhost && rm /tmp/vhost.tmp
fi
# Set right new if needed
if [ `find /var/mail -maxdepth 3 -a \( \! -user 5000 -o \! -group 5000 \) | grep -c .` != 0 ]; then
chown -R 5000:5000 /var/mail
fi
# Restart of the postfix
supervisorctl restart postfix
# Prevent restart of dovecot when smtp_only=1
if [ ! -f $SMTP_ONLY = 1 ]; then
supervisorctl restart dovecot
fi
echo 'Update chksum'
sha512sum --tag postfix-accounts.cf --tag postfix-virtual.cf > chksum
fi
sleep 1
done