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Merge pull request #120 from zertrin/fix-email-handling

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Full rework of email handling
This commit is contained in:
zertrin 2016-04-10 16:37:48 +02:00
commit d7737e3045
1 changed files with 63 additions and 34 deletions
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97
duplicity-backup.sh
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@ -336,47 +336,82 @@ check_logdir()
fi fi
} }
mailcmd_sendmail() {
# based on http://linux.die.net/man/8/sendmail.sendmail
echo -e "From: ${EMAIL_FROM}\nSubject: ${EMAIL_SUBJECT}\n" | cat - "${LOGFILE}" | ${MAILCMD} "${EMAIL_TO}"
}
mailcmd_ssmtp() {
# based on http://linux.die.net/man/8/ssmtp
echo -e "From: ${EMAIL_FROM}\nSubject: ${EMAIL_SUBJECT}\n" | cat - "${LOGFILE}" | ${MAILCMD} "${EMAIL_TO}"
}
mailcmd_msmtp() {
# based on http://manpages.ubuntu.com/manpages/precise/en/man1/msmtp.1.html
echo -e "Subject: ${EMAIL_SUBJECT}\n" | cat - "${LOGFILE}" | ${MAILCMD} -f "${EMAIL_FROM}" -- "${EMAIL_TO}"
}
mailcmd_bsd_mailx() {
# based on http://man.he.net/man1/bsd-mailx
${MAILCMD} -s "${EMAIL_SUBJECT}" -a "From: ${EMAIL_FROM}" "${EMAIL_TO}" < "${LOGFILE}"
}
mailcmd_heirloom_mailx() {
# based on http://heirloom.sourceforge.net/mailx/mailx.1.html
${MAILCMD} -s "${EMAIL_SUBJECT}" -S from="${EMAIL_FROM}" "${EMAIL_TO}" < "${LOGFILE}"
}
mailcmd_nail() {
# based on http://linux.die.net/man/1/nail
${MAILCMD} -s "${EMAIL_SUBJECT}" -r "${EMAIL_FROM}" "${EMAIL_TO}" < "${LOGFILE}"
}
mailcmd_else() {
mailcmd_sendmail
}
email_logfile() email_logfile()
{ {
if [ ! -z "${EMAIL_TO}" ]; then if [ ! -z "${EMAIL_TO}" ]; then
MAILCMD=$(which "${MAIL}") MAILCMD=$(which "${MAIL}")
MAILCMD_REALPATH=$(readlink -e "${MAILCMD}")
MAILCMD_BASENAME=${MAILCMD_REALPATH##*/}
if [ ! -x "${MAILCMD}" ]; then if [ ! -x "${MAILCMD}" ]; then
echo -e "Email couldn't be sent. ${MAIL} not available." >> "${LOGFILE}" echo -e "Email couldn't be sent. ${MAIL} not available." >> "${LOGFILE}"
else else
EMAIL_SUBJECT=${EMAIL_SUBJECT:="duplicity-backup alert ${LOG_FILE}"} EMAIL_SUBJECT=${EMAIL_SUBJECT:="duplicity-backup ${BACKUP_STATUS:-"ERROR"} [${HOSTNAME}] ${LOG_FILE}"}
if [ "${MAIL}" = "ssmtp" ]; then case ${MAIL} in
echo """Subject: ${EMAIL_SUBJECT}""" | cat - "${LOGFILE}" | ${MAILCMD} -s "${EMAIL_TO}" ssmtp)
elif [ "${MAIL}" = "msmtp" ]; then mailcmd_ssmtp;;
echo """Subject: ${EMAIL_SUBJECT}""" | cat - "${LOGFILE}" | ${MAILCMD} "${EMAIL_TO}" msmtp)
elif [ "${MAIL}" = "mailx" ]; then mailcmd_msmtp;;
EMAIL_FROM=${EMAIL_FROM:+"-r ${EMAIL_FROM}"} mail|mailx)
${MAILCMD} -s """${EMAIL_SUBJECT}""" "${EMAIL_FROM}" "${EMAIL_TO}" < "${LOGFILE}" case ${MAILCMD_BASENAME} in
elif [ "${MAIL}" = "mail" ]; then bsd-mailx)
case $(uname) in mailcmd_bsd_mailx;;
FreeBSD|Darwin|DragonFly|OpenBSD) heirloom-mailx)
${MAILCMD} -s """${EMAIL_SUBJECT}""" "${EMAIL_TO}" -- < "${LOGFILE}" mailcmd_heirloom_mailx;;
;; *)
*) mailcmd_else;;
${MAILCMD} -s """${EMAIL_SUBJECT}""" "${EMAIL_FROM}" "${EMAIL_TO}" -- -f "${EMAIL_FROM}" < "${LOGFILE}" esac
;; ;;
esac sendmail)
elif [[ "${MAIL}" = "sendmail" ]]; then mailcmd_sendmail;;
(echo """Subject: ${EMAIL_SUBJECT}""" ; cat "${LOGFILE}") | ${MAILCMD} -f "${EMAIL_FROM}" "${EMAIL_TO}" nail)
elif [ "${MAIL}" = "nail" ]; then mailcmd_nail;;
${MAILCMD} -s """${EMAIL_SUBJECT}""" "${EMAIL_FROM}" "${EMAIL_TO}" < "${LOGFILE}" *)
else mailcmd_else;;
${MAILCMD} """${EMAIL_SUBJECT}""" "${EMAIL_FROM}" "${EMAIL_TO}" < "${LOGFILE}" esac
fi
echo -e "Email alert sent to ${EMAIL_TO} using ${MAIL}" >> "${LOGFILE}" echo -e "Email notification sent to ${EMAIL_TO} using ${MAIL}" >> "${LOGFILE}"
fi fi
fi fi
} }
send_notification() send_notification()
{ {
NOTIFICATION_CONTENT="duplicity-backup ${BACKUP_STATUS:-"ERROR"} [${HOSTNAME}] - \`${LOGFILE}\`"
if [ ! -z "${NOTIFICATION_SERVICE}" ]; then if [ ! -z "${NOTIFICATION_SERVICE}" ]; then
if [ "${NOTIFICATION_SERVICE}" = "slack" ]; then if [ "${NOTIFICATION_SERVICE}" = "slack" ]; then
curl -X POST -H 'Content-type: application/json' --data "{\"text\": \"${NOTIFICATION_CONTENT}\", \"channel\": \"${SLACK_CHANNEL}\", \"username\": \"${SLACK_USERNAME}\", \"icon_emoji\": \":${SLACK_EMOJI}:\"}" "${SLACK_HOOK_URL}" curl -X POST -H 'Content-type: application/json' --data "{\"text\": \"${NOTIFICATION_CONTENT}\", \"channel\": \"${SLACK_CHANNEL}\", \"username\": \"${SLACK_USERNAME}\", \"icon_emoji\": \":${SLACK_EMOJI}:\"}" "${SLACK_HOOK_URL}"
echo -e "Slack notification sent to channel ${SLACK_CHANNEL}" >> "${LOGFILE}"
fi fi
fi fi
} }
@ -858,22 +893,16 @@ esac
echo -e "--------- END DUPLICITY-BACKUP SCRIPT ---------\n" >> "${LOGFILE}" echo -e "--------- END DUPLICITY-BACKUP SCRIPT ---------\n" >> "${LOGFILE}"
# send email
if [ "${BACKUP_ERROR}" ]; then if [ "${BACKUP_ERROR}" ]; then
EMAIL_SUBJECT="BACKUP ERROR: ${EMAIL_SUBJECT}" BACKUP_STATUS="ERROR"
else else
EMAIL_SUBJECT="BACKUP OK: ${EMAIL_SUBJECT}" BACKUP_STATUS="OK"
fi fi
# send email
[[ ${BACKUP_ERROR} || ! "$EMAIL_FAILURE_ONLY" = "yes" ]] && email_logfile [[ ${BACKUP_ERROR} || ! "$EMAIL_FAILURE_ONLY" = "yes" ]] && email_logfile
# send notification # send notification
if [ "${BACKUP_ERROR}" ]; then
NOTIFICATION_CONTENT="BACKUP ERROR: ${HOSTNAME} - \`$LOGFILE\`"
else
NOTIFICATION_CONTENT="BACKUP OK: ${HOSTNAME} - \`$LOGFILE\`"
fi
[[ ${BACKUP_ERROR} || ! "$NOTIFICATION_FAILURE_ONLY" = "yes" ]] && send_notification [[ ${BACKUP_ERROR} || ! "$NOTIFICATION_FAILURE_ONLY" = "yes" ]] && send_notification
# remove old logfiles # remove old logfiles