Dan Čermák
efbca6c8bb
OBS-URL: https://build.opensuse.org/package/show/devel:BCI:Tumbleweed/postfix-image?expand=0&rev=8
432 lines
13 KiB
Bash
432 lines
13 KiB
Bash
#!/bin/bash
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DEBUG=${DEBUG:-"0"}
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[ "${DEBUG}" = "1" ] && set -x
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VIRTUAL_MBOX=${VIRTUAL_MBOX:-"0"}
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USE_LDAP=${USE_LDAP:-"0"}
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NULLCLIENT=${NULLCLIENT:-"1"}
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ENABLE_SUBMISSION=${ENABLE_SUBMISSION:-"0"}
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ENABLE_SUBMISSIONS=${ENABLE_SUBMISSIONS:-"0"}
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export PATH=/usr/sbin:/sbin:${PATH}
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setup_timezone() {
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if [ -n "$TZ" ]; then
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TZ_FILE="/usr/share/zoneinfo/$TZ"
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if [ -f "$TZ_FILE" ]; then
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echo "Setting container timezone to: $TZ"
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ln -snf "$TZ_FILE" /etc/localtime
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else
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echo "Cannot set timezone \"$TZ\": timezone does not exist."
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fi
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fi
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}
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set_config_value() {
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local failed
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key=${1}
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value=${2}
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echo "Setting configuration option \"${key}\" with value \"${value}\""
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postconf -e "${key} = ${value}" || failed=1
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if [ "$failed" ]; then
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echo "ERROR: postconf -e ${key} ${value} failed!"
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exit 1
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fi
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}
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# usage: file_env VAR [DEFAULT]
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# ie: file_env 'SMTP_PASSWORD' 'example'
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# (will allow for "$SMTP_PASSWORD_FILE" to fill in the value of
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# "$SMTP_PASSWORD" from a file, especially for Docker's secrets feature)
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file_env() {
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var="$1"
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fileVar="${var}_FILE"
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def="${2:-}"
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if [ "${!var:-}" ] && [ "${!fileVar:-}" ]; then
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echo >&2 "error: both $var and $fileVar are set (but are exclusive)"
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exit 1
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fi
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val="$def"
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if [ "${!var:-}" ]; then
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val="${!var}"
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elif [ "${!fileVar:-}" ]; then
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val="$(< "${!fileVar}")"
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fi
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export "$var"="$val"
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unset "$fileVar"
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}
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update_db() {
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local failed
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while test "x$1" != "x" ; do
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pfmap=/etc/postfix/${1}
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test -e "${pfmap}" && \
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if test "${pfmap}" -nt "${pfmap}.lmdb" -o ! -e "${pfmap}.lmdb" ; then
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echo "rebuilding ${pfmap}.lmdb"
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postmap "${pfmap}" || failed=1
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if [ "$failed" ]; then
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echo "ERROR: postmap ${pfmap} failed!"
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exit 1
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fi
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fi
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shift
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done
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}
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setup_aliases() {
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local failed
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get_alias_maps() {
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test -d /etc/aliases.d && test "$(echo /etc/aliases.d/*)" != "/etc/aliases.d/*" && \
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for i in $(find /etc/aliases.d -maxdepth 1 -type f \
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'!' -regex ".*\.\(db\|rpmsave\|rpmorig\)" \
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'!' -regex ".*/\(\.\|#\).*" \
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'!' -regex ".*~$") ; do
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echo -n "$i ";
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done
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}
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echo "Building /etc/aliases.lmdb."
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set_config_value "alias_database" "lmdb:/etc/aliases"
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/usr/bin/newaliases
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ALLMAPS="lmdb:/etc/aliases"
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for i in $(get_alias_maps); do
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ALLMAPS="${ALLMAPS}, lmdb:$i"
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echo "Building $i.lmdb"
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postalias "${i}" || failed=1
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if [ "${failed}" ]; then
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echo "ERROR: postalias ${i} failed!"
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exit 1
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fi
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done
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set_config_value "alias_maps" "${ALLMAPS}"
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}
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setup_network() {
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if [ -n "${INET_PROTOCOLS}" ]; then
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set_config_value "inet_protocols" "{$INET_PROTOCOLS}"
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else
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# XXX Containers have ipv6 addresses, but not routeable
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#if ip addr show dev lo | grep -q inet6 ; then
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# set_config_value "inet_protocols" "all"
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#else
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set_config_value "inet_protocols" "ipv4"
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#fi
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fi
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# Always allow private networks, we are running in a container...
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networks='127.0.0.0/8, 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16'
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if [ -n "${SMTP_NETWORKS}" ]; then
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networks+=", ${SMTP_NETWORKS}"
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fi
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set_config_value "mynetworks" "${networks}"
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}
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setup_relayhost() {
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if [ -n "${SMTP_RELAYHOST}" ]; then
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SMTP_PORT="${SMTP_PORT:-587}"
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set_config_value "relayhost" "${SMTP_RELAYHOST}:${SMTP_PORT}"
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if [ "${NULLCLIENT}" -eq "1" ] && [ -z "${MYDESTINATION}" ] ; then
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set_config_value "mydestination" ""
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fi
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fi
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if [ -n "${SMTP_USERNAME}" ]; then
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file_env 'SMTP_PASSWORD'
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if [ -z "${SMTP_PASSWORD}" ]; then
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echo "SMTP_PASSWORD is not set"
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exit 1
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fi
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# Add auth credentials to sasl_passwd
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echo "Adding SASL authentication configuration"
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echo "${SMTP_RELAYHOST} ${SMTP_USERNAME}:${SMTP_PASSWORD}" >> /etc/postfix/sasl_passwd
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update_db sasl_passwd
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set_config_value "smtp_sasl_password_maps" "lmdb:/etc/postfix/sasl_passwd"
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set_config_value "smtp_sasl_auth_enable" "yes"
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set_config_value "smtp_sasl_security_options" "noanonymous"
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fi
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if [ -n "${MASQUERADE_DOMAINS}" ]; then
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set_config_value "masquerade_domains" "${MASQUERADE_DOMAINS}"
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# Requires since postfix 2.2
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set_config_value "local_header_rewrite_clients" "static:all"
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fi
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}
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setup_submission() {
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SMTPD_USE_TLS=${SMTPD_USE_TLS:-"0"}
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if [ "${ENABLE_SUBMISSION}" -eq "1" ]; then
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echo "Enable submission port"
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echo "submission inet n - n - - smtpd" >> /etc/postfix/master.cf
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echo " -o syslog_name=postfix/submission" >> /etc/postfix/master.cf
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if [ "${SMTPD_USE_TLS}" -eq "1" ]; then
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echo " -o smtpd_tls_security_level=encrypt" >> /etc/postfix/master.cf
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echo " -o smtpd_sasl_auth_enable=no" >> /etc/postfix/master.cf
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#echo " -o smtpd_client_restrictions=permit_sasl_authenticated,reject" >> /etc/postfix/master.cf
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fi
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fi
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if [ "${ENABLE_SUBMISSIONS}" -eq "1" ]; then
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if [ "${SMTPD_USE_TLS}" -eq "1" ]; then
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echo "Enable submissions port"
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echo "smtps inet n - n - - smtpd" >> /etc/postfix/master.cf
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echo " -o syslog_name=postfix/smtps" >> /etc/postfix/master.cf
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echo " -o smtpd_tls_wrappermode=yes" >> /etc/postfix/master.cf
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echo " -o smtpd_sasl_auth_enable=no" >> /etc/postfix/master.cf
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else
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echo "WARNING: ENABLE_SUBMISSIONS requires SMTPD_USE_TLS, ignoring!"
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fi
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fi
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if [ "${SMTPD_USE_TLS}" -eq "1" ]; then
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echo "Enable TLS for smtpd"
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SMTPD_TLS_CRT=${SMTPD_TLS_CRT:-"/etc/postfix/ssl/certs/tls.crt"}
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SMTPD_TLS_KEY=${SMTPD_TLS_KEY:-"/etc/postfix/ssl/certs/tls.key"}
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set_config_value "smtpd_use_tls" "yes"
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set_config_value "smtpd_tls_CApath" "/etc/ssl/certs"
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set_config_value "smtpd_tls_cert_file" "${SMTPD_TLS_CRT}"
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set_config_value "smtpd_tls_key_file" "${SMTPD_TLS_KEY}"
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fi
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}
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setup_vhosts() {
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if [ "${USE_LDAP}" -eq "1" ]; then
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LDAP_BASE_DN=${LDAP_BASE_DN:-"dc=example,dc=org"}
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LDAP_SERVER_URL=${LDAP_SERVER_URL:-"ldap://localhost"}
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LDAP_USE_TLS=${LDAP_USE_TLS:-"1"}
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LDAP_BIND_DN=${LDAP_BIND_DN:-"cn=mailAccountReader,ou=Manager,${LDAP_BASE_DN}"}
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file_env LDAP_BIND_PASSWORD
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if [ -z "${LDAP_BIND_PASSWORD}" ]; then
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echo "LDAP_BIND_PASSWORD is not set"
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exit 1
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fi
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# Adjust LDAP variables
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mkdir -p /etc/postfix/ldap
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for map in smtpd_sender_login_maps virtual_alias_domains virtual_alias_maps virtual_gid_maps virtual_mailbox_maps virtual_uid_maps ; do
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sed -e "s|@LDAP_BASE_DN@|${LDAP_BASE_DN}|g" \
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-e "s|@LDAP_SERVER_URL@|${LDAP_SERVER_URL}|g" \
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-e "s|@LDAP_BIND_DN@|${LDAP_BIND_DN}|g" \
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-e "s|@LDAP_BIND_PASSWORD@|${LDAP_BIND_PASSWORD}|g" \
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"/entrypoint/ldap/${map}" > "/etc/postfix/ldap/${map}"
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if [ "${LDAP_USE_TLS}" = "1" ]; then
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sed -i -e 's|^start_tls.*|start_tls = yes|g' "/etc/postfix/ldap/${map}"
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else
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sed -i -e 's|^start_tls.*|start_tls = no|g' "/etc/postfix/ldap/${map}"
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fi
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if [ -n "${LDAP_TLS_CA_CRT}" ]; then
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sed -i -e "s|^#tls_ca_cert_file =.*|tls_ca_cert_file = ${LDAP_TLS_CA_CRT}|g" "/etc/postfix/ldap/${map}"
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fi
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done
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# Don't use VIRUAL_DOMAINS and ldap:virtual_alias_domains at the same time, postfix does
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# not like this
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if [ -z "${VIRTUAL_DOMAINS}" ]; then
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set_config_value "virtual_alias_domains" "ldap:/etc/postfix/ldap/virtual_alias_domains"
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fi
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set_config_value "virtual_alias_maps" "ldap:/etc/postfix/ldap/virtual_alias_maps"
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set_config_value "virtual_mailbox_maps" "ldap:/etc/postfix/ldap/virtual_mailbox_maps"
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set_config_value "smtpd_sender_login_maps" "ldap:/etc/postfix/ldap/smtpd_sender_login_maps"
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else
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set_config_value "virtual_mailbox_maps" "lmdb:/etc/postfix/vmaps"
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set_config_value "virtual_mailbox_limit_maps" "lmdb:/etc/postfix/vquota"
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# Only create vmaps if not provided by admin
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if [ ! -f /etc/postfix/vmaps ]; then
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for mail in ${VIRTUAL_USERS} ; do
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user=${mail%@*}
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domain=${mail#*@}
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echo "${mail} ${domain}/${user}/" >> /etc/postfix/vmaps
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echo "${mail} 0" >> /etc/postfix/vquota
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done
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fi
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update_db vquota
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fi
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set_config_value "virtual_mailbox_domains" "/etc/postfix/vhosts"
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# Only create vhosts if not provided by admin
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if [ ! -f /etc/postfix/vhosts ]; then
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if [ -n "${VIRTUAL_DOMAINS}" ]; then
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for d in ${VIRTUAL_DOMAINS}; do
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echo "$d" >> /etc/postfix/vhosts
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done
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elif [ -n "${SERVER_DOMAIN}" ]; then
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echo "${SERVER_DOMAIN}" > /etc/postfix/vhosts
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else
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touch /etc/postfix/vhosts
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fi
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fi
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update_db vmaps
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if [ -n "${LMTP}" ]; then
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# Use LMTP to deliver the mail to the user
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set_config_value "virtual_transport" "lmtp:${LMTP}:24"
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else
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# Store mails local below /var/spool/vmail
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# Create the vmail user with the requested UID, else 5000
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VMAIL_UID="${VMAIL_UID:-5000}"
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if [ -x /usr/sbin/adduser ]; then
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adduser -D -h /var/spool/vmail -g "Virtual Mail User" -u "${VMAIL_UID}" -s /sbin/nologin vmail
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else
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useradd -d /var/spool/vmail -U -c "Virtual Mail User" -u "${VMAIL_UID}" vmail
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fi
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if [ $? -ne 0 ]; then
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echo "ERROR: creating of vmail user failed! Aborting."
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exit 1
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fi
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if [ ! -d /var/spool/vmail ]; then
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mkdir -p /var/spool/vmail
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chown vmail:vmail /var/spool/vmail
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chmod 775 /var/spool/vmail
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fi
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set_config_value "virtual_mailbox_base" "/var/spool/vmail"
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set_config_value "virtual_minimum_uid" "1000"
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set_config_value "virtual_uid_maps" "static:${VMAIL_UID}"
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set_config_value "virtual_gid_maps" "static:${VMAIL_UID}"
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set_config_value "home_mailbox" "Maildir/"
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# XXX make this configureable and adjust message_size_limit
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set_config_value "virtual_mailbox_limit" "0"
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set_config_value "mailbox_size_limit" "0" # "51200000"
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set_config_value "message_size_limit" "0" # "10240000"
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fi
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}
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configure_postfix() {
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setup_network
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if [ -n "${SERVER_HOSTNAME}" ]; then
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if [ -z "${SERVER_DOMAIN}" ]; then
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SERVER_DOMAIN=$(echo "${SERVER_HOSTNAME}" | cut -d"." -f2-)
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fi
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set_config_value "myhostname" "${SERVER_HOSTNAME}"
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set_config_value "mydomain" "${SERVER_DOMAIN}"
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fi
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# Generic settings
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## Use lmdb instead of "hash" to get rid of BDB
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set_config_value "default_database_type" "lmdb"
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sed -i -e 's|hash:|lmdb:|g' /etc/postfix/main.cf
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## TLS
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if [ -n "${SMTP_TLS_WRAPPERMODE}" ]; then
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set_config_value "smtp_tls_wrappermode" "${SMTP_TLS_WRAPPERMODE}"
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fi
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SMTP_TLS_SECURITY_LEVEL=${SMTP_TLS_SECURITY_LEVEL:-"may"}
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set_config_value "smtp_tls_security_level" "${SMTP_TLS_SECURITY_LEVEL}"
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set_config_value "smtp_tls_CApath" "/etc/postfix/ssl/cacerts"
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## Debug only:
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# set_config_value "smtp_tls_loglevel" "2"
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if [ "${VIRTUAL_MBOX}" -eq "1" ]; then
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setup_vhosts
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fi
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if [ -n "${MYDESTINATION}" ]; then
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set_config_value "mydestination" "${MYDESTINATION}"
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else
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set_config_value "mydestination" "\$myhostname, localhost.\$mydomain, localhost"
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fi
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setup_submission
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setup_relayhost
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# Add maps to config and create database
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for i in canonical relocated sender_canonical transport virtual; do
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set_config_value "${i}_maps" "lmdb:/etc/postfix/${i}"
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update_db "${i}"
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done
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set_config_value "smtpd_sender_restrictions" "lmdb:/etc/postfix/access"
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# Generate and update maps
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update_db access relay relay_recipients
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setup_aliases
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}
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terminate() {
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base=$(basename "$1")
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pid=$(/bin/pidof "$base")
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if [ -n "$pid" ]; then
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echo "Terminating $base..."
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if kill "$pid" ; then
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echo "Terminating $base failed!"
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fi
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else
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echo "Failure determining PID of $base"
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fi
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}
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init_trap() {
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trap stop_daemons TERM INT
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}
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stop_postfix() {
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typeset -i sec=$1
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typeset -i ms=$((sec*100))
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( while ! pidof qmgr > /dev/null 2>&1 ; do
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((ms-- <= 0)) && break
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usleep 10000
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done
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exec postfix flush
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) > /dev/null 2>&1 &
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postfix stop
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terminate /usr/sbin/syslogd
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}
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stop_daemons() {
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stop_postfix "$@"
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}
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start_daemons() {
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# Don't start syslogd in background while starting it in the background...
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# Logging to stdout does not work else.
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/usr/sbin/syslogd -n -S -O - "$@"
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}
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#
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# Main
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#
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# if command starts with an option, prepend postfix
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if [ "${1:0:1}" = '-' ]; then
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set -- postfix start "$@"
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fi
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init_trap
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setup_timezone
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# Update certificates if /etc/pki is mounted from the host
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update-ca-certificates
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# configure postfix even if postfix will not be started, to
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# allow to see the result with postconf for debugging/testing.
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configure_postfix
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# If host mounting /var/spool/postfix, we need to delete the old pid file
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# before starting services
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rm -f /var/spool/postfix/pid/master.pid
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if [ "$1" = 'postfix' ]; then
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start_daemons "$@"
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echo "postfix running and ready"
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echo "[info] refer to postfix manual pages at https://www.postfix.org/postfix-manuals.html"
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sleep infinity & wait $!
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else
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exec "$@"
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fi
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