128 lines
3.3 KiB
Bash
128 lines
3.3 KiB
Bash
#!/bin/bash
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#####
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# This script will send an email if some packages are on hold
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# but have available updates.
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#####
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readonly VERSION="24.05"
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# set all programs to C language (english)
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export LC_ALL=C
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# If expansion is attempted on an unset variable or parameter, the shell prints an
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# error message, and, if not interactive, exits with a non-zero status.
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set -o nounset
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# The pipeline's return status is the value of the last (rightmost) command
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# to exit with a non-zero status, or zero if all commands exit successfully.
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set -o pipefail
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# Enable trace mode if called with environment variable TRACE=1
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if [[ "${TRACE-0}" == "1" ]]; then
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set -o xtrace
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fi
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# shellcheck disable=SC2155
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readonly PROGPATH=$(readlink -m "${0}")
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# readonly PROGNAME=$(basename "${PROGPATH}")
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# # shellcheck disable=SC2124
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# readonly ARGS=$@
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# Fetch values from evomaintenance configuration
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get_evomaintenance_mail() {
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grep "EVOMAINTMAIL=" /etc/evomaintenance.cf | cut -d '=' -f2
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}
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get_fqdn() {
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hostname --fqdn
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}
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get_complete_hostname() {
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REAL_HOSTNAME="$(get_fqdn)"
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if [ "${HOSTNAME}" = "${REAL_HOSTNAME}" ]; then
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echo "${HOSTNAME}"
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else
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echo "${HOSTNAME} (${REAL_HOSTNAME})"
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fi
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}
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format_mail() {
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cat <<EOTEMPLATE
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From: Evolix <${EMAIL_FROM}>
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Content-Type: text/plain; charset=UTF-8
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MIME-Version: 1.0
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Content-Transfer-Encoding: 8bit
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X-Script: ${PROGPATH}
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X-Script-Version: ${VERSION}
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To: ${EMAIL_CLIENT:-alert5@evolix.fr}
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Subject: Mise a jour manuelle disponible
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Bonjour,
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Un ou plusieurs paquets dont la mise à jour automatique a été
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explicitement bloquée ont une nouvelle version disponible.
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Nom du serveur :
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${HOSTNAME_TEXT}
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Liste des paquets :
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${upgradable_held_packages}
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Pour que nous appliquions ces mises à jour vous devez
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nous contacter explicitement, de préférence par ticket,
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en mentionnant le serveur et les paquets concernés,
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ainsi que les modalités de mise à jour (créneau horaire,
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procédure technique…).
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Cordialement
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--
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Evolix
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EOTEMPLATE
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}
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main() {
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held_packages=$(apt-mark showhold)
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upgradable_packages=$(apt list --upgradable 2> /dev/null)
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if [ -z "${held_packages}" ]; then
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# No packages are on hold
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exit 0
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elif [ -z "${upgradable_packages}" ]; then
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# No packages are upgradable
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exit 0
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fi
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kept_back_output=$(LC_ALL=C apt-get upgrade --dry-run | grep -A 1 'The following packages have been kept back:')
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if [ -z "${kept_back_output}" ]; then
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# No packages are kept back
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exit 0
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fi
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upgradable_held_packages=$(apt list --upgradable 2> /dev/null | grep -f <(echo "${kept_back_output}" | tail -1 | tr ' ' '\n' | sed -e '/^$/d'))
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if [ -z "${upgradable_held_packages}" ]; then
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# No held packages are upgradable
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exit 0
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fi
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HOSTNAME="$(get_fqdn)"
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HOSTNAME_TEXT="$(get_complete_hostname)"
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EMAIL_CLIENT="$(get_evomaintenance_mail)"
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EMAIL_FROM="equipe@evolix.fr"
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MAIL_CONTENT="$(format_mail)"
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SENDMAIL_BIN="$(command -v sendmail)"
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if [ -z "${SENDMAIL_BIN}" ]; then
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>&2 echo "ERROR: No \`sendmail' command has been found, can't send mail."
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exit 1
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fi
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if [ ! -x "${SENDMAIL_BIN}" ]; then
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>&2 echo "ERROR: \`${SENDMAIL_BIN}' is not executable, can't send mail."
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exit 1
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fi
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echo "${MAIL_CONTENT}" | "${SENDMAIL_BIN}" -oi -t -f "equipe@evolix.fr"
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exit 0
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}
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main
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