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scripts: housekeeping & cleanup setup (1/2) (#3121)
This commit is contained in:
Georg Lauterbach
GitHub
@ -4,18 +4,79 @@ function _setup_security_stack
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{
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_log 'debug' 'Setting up Security Stack'
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__setup__security__postgrey
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__setup__security__postscreen
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# recreate auto-generated file
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local DMS_AMAVIS_FILE=/etc/amavis/conf.d/61-dms_auto_generated
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echo "# WARNING: this file is auto-generated." >"${DMS_AMAVIS_FILE}"
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echo "use strict;" >>"${DMS_AMAVIS_FILE}"
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# SpamAssassin
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if [[ ${ENABLE_SPAMASSASSIN} -eq 0 ]]
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__setup__security__spamassassin
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__setup__security__clamav
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echo '1; # ensure a defined return' >>"${DMS_AMAVIS_FILE}"
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chmod 444 "${DMS_AMAVIS_FILE}"
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__setup__security__fail2ban
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__setup__security__amavis
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}
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function __setup__security__postgrey
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{
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if [[ ${ENABLE_POSTGREY} -eq 1 ]]
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then
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_log 'debug' 'SpamAssassin is disabled'
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echo "@bypass_spam_checks_maps = (1);" >>"${DMS_AMAVIS_FILE}"
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elif [[ ${ENABLE_SPAMASSASSIN} -eq 1 ]]
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_log 'debug' 'Enabling and configuring Postgrey'
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sedfile -i -E \
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's|(^smtpd_recipient_restrictions =.*)|\1, check_policy_service inet:127.0.0.1:10023|' \
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/etc/postfix/main.cf
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sed -i -e \
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"s|\"--inet=127.0.0.1:10023\"|\"--inet=127.0.0.1:10023 --delay=${POSTGREY_DELAY} --max-age=${POSTGREY_MAX_AGE} --auto-whitelist-clients=${POSTGREY_AUTO_WHITELIST_CLIENTS}\"|" \
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/etc/default/postgrey
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if ! grep -i 'POSTGREY_TEXT' /etc/default/postgrey
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then
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printf 'POSTGREY_TEXT=\"%s\"\n\n' "${POSTGREY_TEXT}" >>/etc/default/postgrey
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fi
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if [[ -f /tmp/docker-mailserver/whitelist_clients.local ]]
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then
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cp -f /tmp/docker-mailserver/whitelist_clients.local /etc/postgrey/whitelist_clients.local
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fi
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if [[ -f /tmp/docker-mailserver/whitelist_recipients ]]
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then
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cp -f /tmp/docker-mailserver/whitelist_recipients /etc/postgrey/whitelist_recipients
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fi
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else
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_log 'debug' 'Postscreen is disabled'
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fi
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}
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function __setup__security__postscreen
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{
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_log 'debug' 'Configuring Postscreen'
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sed -i \
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-e "s|postscreen_dnsbl_action = enforce|postscreen_dnsbl_action = ${POSTSCREEN_ACTION}|" \
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-e "s|postscreen_greet_action = enforce|postscreen_greet_action = ${POSTSCREEN_ACTION}|" \
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-e "s|postscreen_bare_newline_action = enforce|postscreen_bare_newline_action = ${POSTSCREEN_ACTION}|" /etc/postfix/main.cf
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if [[ ${ENABLE_DNSBL} -eq 0 ]]
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then
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_log 'debug' 'Disabling Postscreen DNSBLs'
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postconf 'postscreen_dnsbl_action = ignore'
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postconf 'postscreen_dnsbl_sites = '
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else
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_log 'debug' 'Postscreen DNSBLs are enabled'
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fi
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}
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function __setup__security__spamassassin
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{
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if [[ ${ENABLE_SPAMASSASSIN} -eq 1 ]]
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then
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_log 'debug' 'Enabling and configuring SpamAssassin'
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@ -28,6 +89,11 @@ function _setup_security_stack
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# shellcheck disable=SC2016
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sed -i -r 's|^\$sa_kill_level_deflt (.*);|\$sa_kill_level_deflt = '"${SA_KILL}"';|g' /etc/amavis/conf.d/20-debian_defaults
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# fix cron.daily for spamassassin
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sed -i \
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's|invoke-rc.d spamassassin reload|/etc/init\.d/spamassassin reload|g' \
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/etc/cron.daily/spamassassin
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if [[ ${SA_SPAM_SUBJECT} == 'undef' ]]
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then
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# shellcheck disable=SC2016
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@ -96,25 +162,37 @@ EOF
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chmod +x "${SPAMASSASSIN_KAM_CRON_FILE}"
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fi
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else
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_log 'debug' 'SpamAssassin is disabled'
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echo "@bypass_spam_checks_maps = (1);" >>"${DMS_AMAVIS_FILE}"
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rm -f /etc/cron.daily/spamassassin
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fi
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}
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# ClamAV
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if [[ ${ENABLE_CLAMAV} -eq 0 ]]
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function __setup__security__clamav
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{
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if [[ ${ENABLE_CLAMAV} -eq 1 ]]
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then
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_log 'debug' 'ClamAV is disabled'
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_log 'debug' 'Enabling and configuring ClamAV'
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if [[ ${CLAMAV_MESSAGE_SIZE_LIMIT} != '25M' ]]
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then
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_log 'trace' "Setting ClamAV message scan size limit to '${CLAMAV_MESSAGE_SIZE_LIMIT}'"
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sedfile -i \
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"s/^MaxFileSize.*/MaxFileSize ${CLAMAV_MESSAGE_SIZE_LIMIT}/" \
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/etc/clamav/clamd.conf
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fi
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else
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_log 'debug' 'Disabling ClamAV'
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echo '@bypass_virus_checks_maps = (1);' >>"${DMS_AMAVIS_FILE}"
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elif [[ ${ENABLE_CLAMAV} -eq 1 ]]
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then
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_log 'debug' 'Enabling ClamAV'
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rm -f /etc/logrotate.d/clamav-* /etc/cron.d/clamav-freshclam
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fi
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}
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echo '1; # ensure a defined return' >>"${DMS_AMAVIS_FILE}"
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chmod 444 "${DMS_AMAVIS_FILE}"
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# Fail2ban
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function __setup__security__fail2ban
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{
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if [[ ${ENABLE_FAIL2BAN} -eq 1 ]]
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then
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_log 'debug' 'Enabling Fail2Ban'
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_log 'debug' 'Enabling and configuring Fail2Ban'
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if [[ -e /tmp/docker-mailserver/fail2ban-fail2ban.cf ]]
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then
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@ -125,20 +203,24 @@ EOF
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then
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cp /tmp/docker-mailserver/fail2ban-jail.cf /etc/fail2ban/jail.d/user-jail.local
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fi
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if [[ ${FAIL2BAN_BLOCKTYPE} != 'reject' ]]
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then
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echo -e '[Init]\nblocktype = drop' >/etc/fail2ban/action.d/nftables-common.local
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fi
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echo '[Definition]' >/etc/fail2ban/filter.d/custom.conf
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else
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# disable logrotate config for fail2ban if not enabled
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_log 'debug' 'Fail2Ban is disabled'
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rm -f /etc/logrotate.d/fail2ban
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fi
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}
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# fix cron.daily for spamassassin
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sed -i \
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's|invoke-rc.d spamassassin reload|/etc/init\.d/spamassassin reload|g' \
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/etc/cron.daily/spamassassin
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# Amavis
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function __setup__security__amavis
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{
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if [[ ${ENABLE_AMAVIS} -eq 1 ]]
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then
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_log 'debug' 'Enabling Amavis'
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_log 'debug' 'Configuring Amavis'
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if [[ -f /tmp/docker-mailserver/amavis.cf ]]
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then
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cp /tmp/docker-mailserver/amavis.cf /etc/amavis/conf.d/50-user
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@ -147,14 +229,6 @@ EOF
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sed -i -E \
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"s|(log_level).*|\1 = ${AMAVIS_LOGLEVEL};|g" \
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/etc/amavis/conf.d/49-docker-mailserver
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fi
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}
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function _setup_amavis
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{
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if [[ ${ENABLE_AMAVIS} -eq 1 ]]
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then
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_log 'debug' 'Setting up Amavis'
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cat /etc/dms/postfix/master.d/postfix-amavis.cf >>/etc/postfix/master.cf
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postconf 'content_filter = smtp-amavis:[127.0.0.1]:10024'
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@ -163,7 +237,9 @@ function _setup_amavis
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"s|^#\$myhostname = \"mail.example.com\";|\$myhostname = \"${HOSTNAME}\";|" \
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/etc/amavis/conf.d/05-node_id
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else
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_log 'debug' 'Disabling Amavis cron job'
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_log 'debug' 'Disabling Amavis'
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_log 'trace' 'Disabling Amavis cron job'
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mv /etc/cron.d/amavisd-new /etc/cron.d/amavisd-new.disabled
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chmod 0 /etc/cron.d/amavisd-new.disabled
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@ -178,88 +254,3 @@ function _setup_amavis
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fi
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fi
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}
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function _setup_fail2ban
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{
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_log 'debug' 'Setting up Fail2Ban'
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if [[ ${FAIL2BAN_BLOCKTYPE} != 'reject' ]]
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then
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echo -e '[Init]\nblocktype = drop' >/etc/fail2ban/action.d/nftables-common.local
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fi
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echo '[Definition]' >/etc/fail2ban/filter.d/custom.conf
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}
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function _setup_postgrey
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{
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_log 'debug' 'Configuring Postgrey'
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sedfile -i -E \
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's|(^smtpd_recipient_restrictions =.*)|\1, check_policy_service inet:127.0.0.1:10023|' \
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/etc/postfix/main.cf
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sed -i -e \
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"s|\"--inet=127.0.0.1:10023\"|\"--inet=127.0.0.1:10023 --delay=${POSTGREY_DELAY} --max-age=${POSTGREY_MAX_AGE} --auto-whitelist-clients=${POSTGREY_AUTO_WHITELIST_CLIENTS}\"|" \
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/etc/default/postgrey
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TEXT_FOUND=$(grep -c -i 'POSTGREY_TEXT' /etc/default/postgrey)
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if [[ ${TEXT_FOUND} -eq 0 ]]
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then
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printf 'POSTGREY_TEXT=\"%s\"\n\n' "${POSTGREY_TEXT}" >>/etc/default/postgrey
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fi
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if [[ -f /tmp/docker-mailserver/whitelist_clients.local ]]
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then
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cp -f /tmp/docker-mailserver/whitelist_clients.local /etc/postgrey/whitelist_clients.local
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fi
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if [[ -f /tmp/docker-mailserver/whitelist_recipients ]]
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then
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cp -f /tmp/docker-mailserver/whitelist_recipients /etc/postgrey/whitelist_recipients
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fi
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}
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function _setup_postfix_postscreen
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{
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_log 'debug' 'Configuring Postscreen'
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sed -i \
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-e "s|postscreen_dnsbl_action = enforce|postscreen_dnsbl_action = ${POSTSCREEN_ACTION}|" \
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-e "s|postscreen_greet_action = enforce|postscreen_greet_action = ${POSTSCREEN_ACTION}|" \
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-e "s|postscreen_bare_newline_action = enforce|postscreen_bare_newline_action = ${POSTSCREEN_ACTION}|" /etc/postfix/main.cf
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}
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function _setup_clamav_sizelimit
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{
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_log 'trace' "Setting ClamAV message scan size limit to '${CLAMAV_MESSAGE_SIZE_LIMIT}'"
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sedfile -i "s/^MaxFileSize.*/MaxFileSize ${CLAMAV_MESSAGE_SIZE_LIMIT}/" /etc/clamav/clamd.conf
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}
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function _setup_spoof_protection
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{
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_log 'trace' 'Configuring spoof protection'
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sed -i \
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's|smtpd_sender_restrictions =|smtpd_sender_restrictions = reject_authenticated_sender_login_mismatch,|' \
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/etc/postfix/main.cf
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if [[ ${ACCOUNT_PROVISIONER} == 'LDAP' ]]
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then
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if [[ -z ${LDAP_QUERY_FILTER_SENDERS} ]]
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then
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postconf 'smtpd_sender_login_maps = ldap:/etc/postfix/ldap-users.cf ldap:/etc/postfix/ldap-aliases.cf ldap:/etc/postfix/ldap-groups.cf'
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else
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postconf 'smtpd_sender_login_maps = ldap:/etc/postfix/ldap-senders.cf'
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fi
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else
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if [[ -f /etc/postfix/regexp ]]
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then
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postconf 'smtpd_sender_login_maps = unionmap:{ texthash:/etc/postfix/virtual, hash:/etc/aliases, pcre:/etc/postfix/maps/sender_login_maps.pcre, pcre:/etc/postfix/regexp }'
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else
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postconf 'smtpd_sender_login_maps = texthash:/etc/postfix/virtual, hash:/etc/aliases, pcre:/etc/postfix/maps/sender_login_maps.pcre'
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fi
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fi
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}
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@ -2,13 +2,18 @@
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function _setup_rspamd
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{
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_log 'warn' 'Rspamd integration is work in progress - expect (breaking) changes at any time'
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_log 'debug' 'Enabling Rspamd'
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if [[ ${ENABLE_RSPAMD} -eq 1 ]]
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then
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_log 'warn' 'Rspamd integration is work in progress - expect (breaking) changes at any time'
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_log 'debug' 'Enabling and configuring Rspamd'
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__rspamd__preflight_checks
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__rspamd__adjust_postfix_configuration
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__rspamd__disable_default_modules
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__rspamd__handle_modules_configuration
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__rspamd__preflight_checks
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__rspamd__adjust_postfix_configuration
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__rspamd__disable_default_modules
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__rspamd__handle_modules_configuration
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else
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_log 'debug' 'Rspamd is disabled'
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fi
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}
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# Just a helper to prepend the log messages with `(Rspamd setup)` so
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32
target/scripts/startup/setup.d/security/spoofing.sh
Normal file
32
target/scripts/startup/setup.d/security/spoofing.sh
Normal file
@ -0,0 +1,32 @@
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#!/bin/bash
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function _setup_spoof_protection
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{
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if [[ ${SPOOF_PROTECTION} -eq 1 ]]
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then
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_log 'trace' 'Enabling and configuring spoof protection'
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sed -i \
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's|smtpd_sender_restrictions =|smtpd_sender_restrictions = reject_authenticated_sender_login_mismatch,|' \
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/etc/postfix/main.cf
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if [[ ${ACCOUNT_PROVISIONER} == 'LDAP' ]]
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then
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if [[ -z ${LDAP_QUERY_FILTER_SENDERS} ]]
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then
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postconf 'smtpd_sender_login_maps = ldap:/etc/postfix/ldap-users.cf ldap:/etc/postfix/ldap-aliases.cf ldap:/etc/postfix/ldap-groups.cf'
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else
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postconf 'smtpd_sender_login_maps = ldap:/etc/postfix/ldap-senders.cf'
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fi
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else
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if [[ -f /etc/postfix/regexp ]]
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then
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postconf 'smtpd_sender_login_maps = unionmap:{ texthash:/etc/postfix/virtual, hash:/etc/aliases, pcre:/etc/postfix/maps/sender_login_maps.pcre, pcre:/etc/postfix/regexp }'
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else
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postconf 'smtpd_sender_login_maps = texthash:/etc/postfix/virtual, hash:/etc/aliases, pcre:/etc/postfix/maps/sender_login_maps.pcre'
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fi
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fi
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else
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_log 'debug' 'Spoof protection is disabled'
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fi
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}
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