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Add file notification channel (#222)

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* Add file notification channel

* Bypass file channel notifications for dockcheck.sh script

* Implement notification channel template reuse and advanced configuration variables.

* Fix text insertion formatting for dockcheck script and container updates.

* Fix dockcheck.sh notification csv and text output.

* Fix ntfy variable references and replace tr for uppercase conversion.

* Fix ALLOWEMPTY logic, undefined snippet case, and README formatting.

* Refactor notification send/skip logic. Adjust missing variable return codes.

* Adjust notifications README section for clarity and readability.

---------

Co-authored-by: Matthew Oleksowicz <matt@everyoneneeds.it>
This commit is contained in:
vorezal 2025-09-15 05:25:23 -04:00 • committed by GitHub
parent 37f33d7a06
commit 31a45f1d84
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GPG key ID: B5690EEEBB952194
18 changed files with 620 additions and 267 deletions
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33
notify_templates/notify_smtp.sh
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@ -1,5 +1,5 @@
### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
NOTIFY_SMTP_VERSION="v0.4"
NOTIFY_SMTP_VERSION="v0.5"
# INFO: ssmtp is depcerated - consider to use msmtp instead.
#
# mSMTP/sSMTP has to be installed and configured manually.
@ -7,12 +7,6 @@ NOTIFY_SMTP_VERSION="v0.4"
# If you instead wish make your own modifications, make a copy in the same directory as the main dockcheck.sh script.
# Do not modify this file directly within the "notify_templates" subdirectory. Set SMTP_MAIL_FROM, SMTP_MAIL_TO, and SMTP_SUBJECT_TAG in your dockcheck.config file.
if [[ -z "${SMTP_MAIL_FROM:-}" ]] || [[ -z "${SMTP_MAIL_TO:-}" ]] || [[ -z "${SMTP_SUBJECT_TAG:-}" ]]; then
printf "SMTP notification channel enabled, but required configuration variables are missing. SMTP notifications will not be sent.\n"
remove_channel smtp
fi
MSMTP=$(which msmtp)
SSMTP=$(which ssmtp)
SENDMAIL=$(which sendmail)
@ -28,9 +22,28 @@ else
fi
trigger_smtp_notification() {
SendMailFrom="${SMTP_MAIL_FROM}" # e.g. MAIL_FROM=me@mydomain.tld
SendMailTo="${SMTP_MAIL_TO}" # e.g. MAIL_TO=me@mydomain.tld
SubjectTag="${SMTP_SUBJECT_TAG}" # e.g. SUBJECT_TAG=dockcheck
if [[ -n "$1" ]]; then
smtp_channel="$1"
else
smtp_channel="smtp"
fi
UpperChannel="${smtp_channel^^}"
SendMailFromVar="${UpperChannel}_MAIL_FROM"
SendMailToVar="${UpperChannel}_MAIL_TO"
SubjectTagVar="${UpperChannel}_SUBJECT_TAG"
if [[ -z "${!SendMailFromVar:-}" ]] || [[ -z "${!SendMailToVar:-}" ]] || [[ -z "${!SubjectTagVar:-}" ]]; then
printf "The ${smtp_channel} notification channel is enabled, but required configuration variables are missing. SMTP notifications will not be sent.\n"
remove_channel smtp
return 0
fi
SendMailFrom="${!SendMailFromVar}" # e.g. MAIL_FROM=me@mydomain.tld
SendMailTo="${!SendMailToVar}" # e.g. MAIL_TO=me@mydomain.tld
SubjectTag="${!SubjectTagVar}" # e.g. SUBJECT_TAG=dockcheck
$MailPkg $SendMailTo << __EOF
From: "$FromHost" <$SendMailFrom>