mirror of
https://github.com/docker-mailserver/docker-mailserver.git
synced 2024-01-19 02:48:50 +00:00
200 lines
7.9 KiB
Bash
200 lines
7.9 KiB
Bash
#!/bin/bash
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# Support for Postfix accounts managed via Dovecot
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# It looks like the DOMAIN in below logic is being stored in /etc/postfix/vhost,
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# even if it's a value used for Postfix `main.cf:mydestination`, which apparently isn't good?
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# Only an issue when $myhostname is an exact match (eg: bare domain FQDN).
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DOVECOT_USERDB_FILE=/etc/dovecot/userdb
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DOVECOT_MASTERDB_FILE=/etc/dovecot/masterdb
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function _create_accounts
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{
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: >/etc/postfix/vmailbox
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: >"${DOVECOT_USERDB_FILE}"
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[[ ${ACCOUNT_PROVISIONER} == 'FILE' ]] || return 0
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local DATABASE_ACCOUNTS='/tmp/docker-mailserver/postfix-accounts.cf'
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_create_masters
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if [[ -f ${DATABASE_ACCOUNTS} ]]; then
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_log 'trace' "Checking file line endings"
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sed -i 's|\r||g' "${DATABASE_ACCOUNTS}"
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_log 'trace' "Regenerating postfix user list"
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echo "# WARNING: this file is auto-generated. Modify ${DATABASE_ACCOUNTS} to edit the user list." > /etc/postfix/vmailbox
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# checking that ${DATABASE_ACCOUNTS} ends with a newline
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# shellcheck disable=SC1003
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sed -i -e '$a\' "${DATABASE_ACCOUNTS}"
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chown dovecot:dovecot "${DOVECOT_USERDB_FILE}"
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chmod 640 "${DOVECOT_USERDB_FILE}"
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sed -i -e '/\!include auth-ldap\.conf\.ext/s/^/#/' /etc/dovecot/conf.d/10-auth.conf
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sed -i -e '/\!include auth-passwdfile\.inc/s/^#//' /etc/dovecot/conf.d/10-auth.conf
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# creating users ; 'pass' is encrypted
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# comments and empty lines are ignored
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local LOGIN PASS USER_ATTRIBUTES
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while IFS=$'|' read -r LOGIN PASS USER_ATTRIBUTES
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do
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# Setting variables for better readability
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USER=$(echo "${LOGIN}" | cut -d @ -f1)
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DOMAIN=$(echo "${LOGIN}" | cut -d @ -f2)
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# test if user has a defined quota
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if [[ -f /tmp/docker-mailserver/dovecot-quotas.cf ]]; then
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declare -a USER_QUOTA
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IFS=':' read -r -a USER_QUOTA < <(grep "${USER}@${DOMAIN}:" -i /tmp/docker-mailserver/dovecot-quotas.cf)
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if [[ ${#USER_QUOTA[@]} -eq 2 ]]; then
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USER_ATTRIBUTES="${USER_ATTRIBUTES:+${USER_ATTRIBUTES} }userdb_quota_rule=*:bytes=${USER_QUOTA[1]}"
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fi
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fi
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if [[ -z ${USER_ATTRIBUTES} ]]; then
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_log 'debug' "Creating user '${USER}' for domain '${DOMAIN}'"
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else
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_log 'debug' "Creating user '${USER}' for domain '${DOMAIN}' with attributes '${USER_ATTRIBUTES}'"
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fi
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local POSTFIX_VMAILBOX_LINE DOVECOT_USERDB_LINE
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POSTFIX_VMAILBOX_LINE="${LOGIN} ${DOMAIN}/${USER}/"
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if grep -qF "${POSTFIX_VMAILBOX_LINE}" /etc/postfix/vmailbox; then
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_log 'warn' "User '${USER}@${DOMAIN}' will not be added to '/etc/postfix/vmailbox' twice"
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else
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echo "${POSTFIX_VMAILBOX_LINE}" >>/etc/postfix/vmailbox
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fi
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# Dovecot's userdb has the following format
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# user:password:uid:gid:(gecos):home:(shell):extra_fields
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DOVECOT_USERDB_LINE="${LOGIN}:${PASS}:5000:5000::/var/mail/${DOMAIN}/${USER}/home::${USER_ATTRIBUTES}"
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if grep -qF "${DOVECOT_USERDB_LINE}" "${DOVECOT_USERDB_FILE}"; then
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_log 'warn' "Login '${LOGIN}' will not be added to '${DOVECOT_USERDB_FILE}' twice"
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else
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echo "${DOVECOT_USERDB_LINE}" >>"${DOVECOT_USERDB_FILE}"
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fi
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mkdir -p "/var/mail/${DOMAIN}/${USER}/home"
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# copy user provided sieve file, if present
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if [[ -e "/tmp/docker-mailserver/${LOGIN}.dovecot.sieve" ]]; then
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cp "/tmp/docker-mailserver/${LOGIN}.dovecot.sieve" "/var/mail/${DOMAIN}/${USER}/home/.dovecot.sieve"
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fi
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done < <(_get_valid_lines_from_file "${DATABASE_ACCOUNTS}")
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_create_dovecot_alias_dummy_accounts
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fi
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}
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# Required when using Dovecot Quotas to avoid blacklisting risk from backscatter
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# Note: This is a workaround only suitable for basic aliases that map to single real addresses,
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# not multiple addresses (real accounts or additional aliases), those will not work with Postfix
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# `quota-status` policy service and remain at risk of backscatter.
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#
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# see https://github.com/docker-mailserver/docker-mailserver/pull/2248#issuecomment-953313852
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# for more details on this method
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function _create_dovecot_alias_dummy_accounts
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{
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local DATABASE_VIRTUAL='/tmp/docker-mailserver/postfix-virtual.cf'
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if [[ -f ${DATABASE_VIRTUAL} ]] && [[ ${ENABLE_QUOTAS} -eq 1 ]]; then
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# adding aliases to Dovecot's userdb
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# ${REAL_FQUN} is a user's fully-qualified username
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local ALIAS REAL_FQUN DOVECOT_USERDB_LINE
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while read -r ALIAS REAL_FQUN
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do
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# alias is assumed to not be a proper e-mail
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# these aliases do not need to be added to Dovecot's userdb
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[[ ! ${ALIAS} == *@* ]] && continue
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# clear possibly already filled arrays
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# do not remove the following line of code
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unset REAL_ACC USER_QUOTA
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declare -a REAL_ACC USER_QUOTA
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local REAL_USERNAME REAL_DOMAINNAME
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REAL_USERNAME=$(cut -d '@' -f 1 <<< "${REAL_FQUN}")
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REAL_DOMAINNAME=$(cut -d '@' -f 2 <<< "${REAL_FQUN}")
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if ! grep -q "${REAL_FQUN}" "${DATABASE_ACCOUNTS}"; then
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_log 'debug' "Alias '${ALIAS}' is non-local (or mapped to a non-existing account) and will not be added to Dovecot's userdb"
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continue
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fi
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_log 'debug' "Adding alias '${ALIAS}' for user '${REAL_FQUN}' to Dovecot's userdb"
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# ${REAL_ACC[0]} => real account name (e-mail address) == ${REAL_FQUN}
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# ${REAL_ACC[1]} => password hash
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# ${REAL_ACC[2]} => optional user attributes
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IFS='|' read -r -a REAL_ACC < <(grep "${REAL_FQUN}" "${DATABASE_ACCOUNTS}")
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if [[ -z ${REAL_ACC[1]} ]]; then
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_dms_panic__misconfigured 'postfix-accounts.cf' 'alias configuration'
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fi
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# test if user has a defined quota
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if [[ -f /tmp/docker-mailserver/dovecot-quotas.cf ]]; then
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IFS=':' read -r -a USER_QUOTA < <(grep "${REAL_FQUN}:" -i /tmp/docker-mailserver/dovecot-quotas.cf)
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if [[ ${#USER_QUOTA[@]} -eq 2 ]]; then
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REAL_ACC[2]="${REAL_ACC[2]:+${REAL_ACC[2]} }userdb_quota_rule=*:bytes=${USER_QUOTA[1]}"
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fi
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fi
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DOVECOT_USERDB_LINE="${ALIAS}:${REAL_ACC[1]}:5000:5000::/var/mail/${REAL_DOMAINNAME}/${REAL_USERNAME}::${REAL_ACC[2]:-}"
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if grep -qi "^${ALIAS}:" "${DOVECOT_USERDB_FILE}"; then
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_log 'warn' "Alias '${ALIAS}' will not be added to '${DOVECOT_USERDB_FILE}' twice"
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else
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echo "${DOVECOT_USERDB_LINE}" >>"${DOVECOT_USERDB_FILE}"
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fi
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done < <(_get_valid_lines_from_file "${DATABASE_VIRTUAL}")
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fi
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}
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# Support Dovecot master user: https://doc.dovecot.org/configuration_manual/authentication/master_users/
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# Supporting LDAP users requires `auth_bind = yes` in `dovecot-ldap.conf.ext`, see docker-mailserver/docker-mailserver/pull/2535 for details
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function _create_masters
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{
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: >"${DOVECOT_MASTERDB_FILE}"
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local DATABASE_DOVECOT_MASTERS='/tmp/docker-mailserver/dovecot-masters.cf'
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if [[ -f ${DATABASE_DOVECOT_MASTERS} ]]; then
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_log 'trace' "Checking file line endings"
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sed -i 's|\r||g' "${DATABASE_DOVECOT_MASTERS}"
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_log 'trace' "Regenerating dovecot masters list"
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# checking that ${DATABASE_DOVECOT_MASTERS} ends with a newline
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# shellcheck disable=SC1003
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sed -i -e '$a\' "${DATABASE_DOVECOT_MASTERS}"
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chown dovecot:dovecot "${DOVECOT_MASTERDB_FILE}"
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chmod 640 "${DOVECOT_MASTERDB_FILE}"
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sed -i -e '/\!include auth-master\.inc/s/^#//' /etc/dovecot/conf.d/10-auth.conf
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# creating users ; 'pass' is encrypted
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# comments and empty lines are ignored
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local LOGIN PASS
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while IFS=$'|' read -r LOGIN PASS
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do
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_log 'debug' "Creating master user '${LOGIN}'"
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local DOVECOT_MASTERDB_LINE
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# Dovecot's masterdb has the following format
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# user:password
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DOVECOT_MASTERDB_LINE="${LOGIN}:${PASS}"
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if grep -qF "${DOVECOT_MASTERDB_LINE}" "${DOVECOT_MASTERDB_FILE}"; then
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_log 'warn' "Login '${LOGIN}' will not be added to '${DOVECOT_MASTERDB_FILE}' twice"
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else
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echo "${DOVECOT_MASTERDB_LINE}" >>"${DOVECOT_MASTERDB_FILE}"
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fi
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done < <(_get_valid_lines_from_file "${DATABASE_DOVECOT_MASTERS}")
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fi
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}
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