238 lines
7.8 KiB
Bash
Executable File
238 lines
7.8 KiB
Bash
Executable File
#!/bin/bash
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# version 0.1.0
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#
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# <INSERT TASK HERE>
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# shellcheck source=/dev/null
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. /usr/local/bin/helper_functions.sh
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LOG_DATE=$(date +"%Y-%m-%d %H:%M:%S ")
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echo "$LOG_DATE Start check-for-changes script."
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# ? Checks ------------------------------------------------
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cd /tmp/docker-mailserver || exit 1
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# Check postfix-accounts.cf exist else break
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if [[ ! -f postfix-accounts.cf ]]
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then
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echo "$LOG_DATE postfix-accounts.cf is missing! This should not run! Exit!"
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exit
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fi
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# Verify checksum file exists; must be prepared by start-mailserver.sh
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if [[ ! -f $CHKSUM_FILE ]]
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then
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echo "$LOG_DATE $CHKSUM_FILE is missing! Start script failed? Exit!"
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exit
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fi
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# ? Actual script begins ----------------------------------
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# Determine postmaster address, duplicated from start-mailserver.sh
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# This script previously didn't work when POSTMASTER_ADDRESS was empty
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if [[ -n $OVERRIDE_HOSTNAME ]]
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then
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DOMAINNAME="${OVERRIDE_HOSTNAME#*.}"
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else
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DOMAINNAME="$(hostname -d)"
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fi
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PM_ADDRESS="${POSTMASTER_ADDRESS:=postmaster@${DOMAINNAME}}"
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echo "$LOG_DATE Using postmaster address $PM_ADDRESS"
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sleep 10
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while true
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do
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LOG_DATE=$(date +"%Y-%m-%d %H:%M:%S ")
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# get chksum and check it, no need to lock config yet
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_monitored_files_checksums >"${CHKSUM_FILE}.new"
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if ! cmp --silent -- "$CHKSUM_FILE" "$CHKSUM_FILE.new"
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then
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echo "${LOG_DATE} Change detected"
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changed=$(grep -Fxvf "$CHKSUM_FILE" "$CHKSUM_FILE.new" | sed 's/^[^ ]\+ //')
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mv "$CHKSUM_FILE.new" "$CHKSUM_FILE"
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# Bug alert! This overwrites the alias set by start-mailserver.sh
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# Take care that changes in one script are propagated to the other
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# ! NEEDS FIX -----------------------------------------
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# TODO FIX --------------------------------------------
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# ! NEEDS EXTENSIONS ----------------------------
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# TODO Perform updates below conditionally too --
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# Also note that changes are performed in place and are not atomic
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# We should fix that and write to temporary files, stop, swap and start
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# Lock configuration while working
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(
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flock -e 200
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for file in $changed
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do
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case $file in
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/etc/letsencrypt/acme.json)
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for certdomain in $SSL_DOMAIN $HOSTNAME $DOMAINNAME
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do
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if _extract_certs_from_acme "$certdomain"
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then
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break
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fi
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done
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;;
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* ) notify 'err' 'file not found for certificate in check_for_changes.sh' ;;
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esac
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done
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# regenerate postix aliases
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echo "root: ${PM_ADDRESS}" >/etc/aliases
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if [[ -f /tmp/docker-mailserver/postfix-aliases.cf ]]
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then
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cat /tmp/docker-mailserver/postfix-aliases.cf >>/etc/aliases
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fi
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postalias /etc/aliases
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# regenerate postfix accounts
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echo -n >/etc/postfix/vmailbox
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echo -n >/etc/dovecot/userdb
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if [[ -f /tmp/docker-mailserver/postfix-accounts.cf ]] && [[ $ENABLE_LDAP -ne 1 ]]
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then
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sed -i 's/\r//g' /tmp/docker-mailserver/postfix-accounts.cf
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echo "# WARNING: this file is auto-generated. Modify config/postfix-accounts.cf to edit user list." >/etc/postfix/vmailbox
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# Checking that /tmp/docker-mailserver/postfix-accounts.cf ends with a newline
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# shellcheck disable=SC1003
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sed -i -e '$a\' /tmp/docker-mailserver/postfix-accounts.cf
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chown dovecot:dovecot /etc/dovecot/userdb
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chmod 640 /etc/dovecot/userdb
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sed -i -e '/\!include auth-ldap\.conf\.ext/s/^/#/' /etc/dovecot/conf.d/10-auth.conf
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sed -i -e '/\!include auth-passwdfile\.inc/s/^#//' /etc/dovecot/conf.d/10-auth.conf
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# rebuild relay host
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if [[ -n $RELAY_HOST ]]
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then
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# keep old config
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echo -n >/etc/postfix/sasl_passwd
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if [[ -n $SASL_PASSWD ]]
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then
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echo "$SASL_PASSWD" >>/etc/postfix/sasl_passwd
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fi
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# add domain-specific auth from config file
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if [[ -f /tmp/docker-mailserver/postfix-sasl-password.cf ]]
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then
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(grep -v "^\s*$\|^\s*\#" /tmp/docker-mailserver/postfix-sasl-password.cf || true) | while read -r line
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do
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if ! echo "$line" | grep -q -e "\s*#"
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then
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echo "$line" >>/etc/postfix/sasl_passwd
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fi
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done
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fi
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# add default relay
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if [[ -n "$RELAY_USER" ]] && [[ -n "$RELAY_PASSWORD" ]]
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then
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echo "[$RELAY_HOST]:$RELAY_PORT $RELAY_USER:$RELAY_PASSWORD" >>/etc/postfix/sasl_passwd
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fi
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fi
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# creating users ; 'pass' is encrypted
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# comments and empty lines are ignored
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grep -v "^\s*$\|^\s*\#" /tmp/docker-mailserver/postfix-accounts.cf | while IFS=$'|' read -r login pass
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do
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user=$(echo "$login" | cut -d @ -f1)
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domain=$(echo "$login" | cut -d @ -f2)
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user_attributes=""
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# test if user has a defined quota
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if [[ -f /tmp/docker-mailserver/dovecot-quotas.cf ]]
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then
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IFS=':'
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read -r -a user_quota < <(grep "${user}@${domain}:" -i /tmp/docker-mailserver/dovecot-quotas.cf)
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unset IFS
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[[ ${#user_quota[@]} -eq 2 ]] && user_attributes="${user_attributes}userdb_quota_rule=*:bytes=${user_quota[1]}"
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fi
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echo "$login ${domain}/${user}/" >>/etc/postfix/vmailbox
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# user database for dovecot has the following format:
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# user:password:uid:gid:(gecos):home:(shell):extra_fields
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# example :
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# ${login}:${pass}:5000:5000::/var/mail/${domain}/${user}::userdb_mail=maildir:/var/mail/${domain}/${user}
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echo "${login}:${pass}:5000:5000::/var/mail/${domain}/${user}::${user_attributes}" >>/etc/dovecot/userdb
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mkdir -p "/var/mail/${domain}/${user}"
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if [[ -e /tmp/docker-mailserver/${login}.dovecot.sieve ]]
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then
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cp "/tmp/docker-mailserver/${login}.dovecot.sieve" "/var/mail/${domain}/${user}/.dovecot.sieve"
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fi
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echo "$domain" >>/tmp/vhost.tmp
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done
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fi
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[[ -n $RELAY_HOST ]] && _populate_relayhost_map
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if [[ -f /etc/postfix/sasl_passwd ]]
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then
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chown root:root /etc/postfix/sasl_passwd
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chmod 0600 /etc/postfix/sasl_passwd
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fi
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if [[ -f postfix-virtual.cf ]]
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then
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# regenerate postfix aliases
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echo -n >/etc/postfix/virtual
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echo -n >/etc/postfix/regexp
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if [[ -f /tmp/docker-mailserver/postfix-virtual.cf ]]
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then
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cp -f /tmp/docker-mailserver/postfix-virtual.cf /etc/postfix/virtual
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# the `to` seems to be important; don't delete it
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# shellcheck disable=SC2034
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(grep -v "^\s*$\|^\s*\#" /tmp/docker-mailserver/postfix-virtual.cf || true) | while read -r from to
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do
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uname=$(echo "$from" | cut -d @ -f1)
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domain=$(echo "$from" | cut -d @ -f2)
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# if they are equal it means the line looks like: "user1 other@domain.tld"
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[ "$uname" != "$domain" ] && echo "$domain" >>/tmp/vhost.tmp
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done
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fi
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if [[ -f /tmp/docker-mailserver/postfix-regexp.cf ]]
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then
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cp -f /tmp/docker-mailserver/postfix-regexp.cf /etc/postfix/regexp
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sed -i -e '/^virtual_alias_maps/{
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s/ regexp:.*//
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s/$/ regexp:\/etc\/postfix\/regexp/
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}' /etc/postfix/main.cf
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fi
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fi
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if [[ -f /tmp/vhost.tmp ]]
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then
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# shellcheck disable=SC2002
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cat /tmp/vhost.tmp | sort | uniq >/etc/postfix/vhost && rm /tmp/vhost.tmp
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fi
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if [[ $(find /var/mail -maxdepth 3 -a \( \! -user 5000 -o \! -group 5000 \) | grep -c .) -ne 0 ]]
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then
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chown -R 5000:5000 /var/mail
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fi
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supervisorctl restart postfix
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# prevent restart of dovecot when smtp_only=1
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[[ $SMTP_ONLY -ne 1 ]] && supervisorctl restart dovecot
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) 200<postfix-accounts.cf # end lock
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fi
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sleep 1
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done
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