Update link

* Small fixes

.github/FUNDING.yml

@@ -0,0 +1,3 @@
+# These are supported funding model platforms
+
+github: patvdv

README.md

@@ -90,6 +90,7 @@ Additionally, there may be bundles for display or notification plugins, e.g.:
 * hc-display-terse
 * hc-notify-eif
 * hc-notify-sms
+* hc-notify-slack
 
 ## Configure & deploy
 
@@ -141,13 +142,14 @@ An Ansible role is available at: https://github.com/patvdv/kudos.check_health
 * **Alerting** on failed health checks:
 ```
 /opt/hc/bin/check_health.sh --hc=check_hpux_root_crontab --run --notify=mail --mail-to="alert@acme.com"
+/opt/hc/bin/check_health.sh --hc=check_linux_fs_usage --run --notify=slack
 ```    
 
 ## References
 
 ### Documentation
 
-More documentation can be found at http://www.kudos.be/Projects/Health_checker.html
+More documentation can be found at <https://www.kudos.be/check_health/>
 
 ### Logo
 

build/aix/hc_aix_platform/hc_aix_platform.template

@@ -32,12 +32,14 @@ Fileset
 /opt/hc/lib/platform/aix/check_aix_subsystems.sh
 /opt/hc/lib/platform/aix/check_aix_sysbackup.sh
 /opt/hc/lib/platform/aix/check_aix_topasrec.sh
+/opt/hc/lib/platform/aix/check_aix_uptime.sh
 /etc/opt/hc
 /etc/opt/hc/check_aix_file_age.conf.dist
 /etc/opt/hc/check_aix_file_change.conf.dist
 /etc/opt/hc/check_aix_root_crontab.conf.dist
 /etc/opt/hc/check_aix_subsystems.conf.dist
 /etc/opt/hc/check_aix_sysbackup.conf.dist
+/etc/opt/hc/check_aix_uptime.conf.dist
   EOROOTFiles
   Relocatable: N
 EOFileset

build/aix/hc_notify_slack/hc_notify_slack.reqs

@@ -0,0 +1 @@
+*prereq hc_aix.rte

build/aix/hc_notify_slack/hc_notify_slack.template

@@ -0,0 +1,31 @@
+Package Name: hc_notify_slack
+Package VRMF: %BUILD_DATE%
+Update: N
+Fileset
+  Fileset Name: hc_notify_slack.rte
+  Fileset VRMF: %BUILD_DATE%
+  Fileset Description: Health Checker - core Slack plugin
+  USRLIBLPPFiles
+  EOUSRLIBLPPFiles
+  ROOTLIBLPPFiles
+     Post-installation Script: /export/nim/build/hc_notify_slack/scripts/hc_notify_slack.postinstall
+     Unpost-installation Script: /export/nim/build/hc_notify_slack/scripts/hc_notify_slack.postuninstall
+  EOROOTLIBLPPFiles
+  Bosboot required: N
+  License agreement acceptance required: N
+  Include license files in this package: N
+  Requisites: /export/nim/build/hc_notify_slack/hc_notify_slack.reqs
+  USRFiles
+  EOUSRFiles
+  ROOT Part: Y
+  ROOTFiles
+/opt/hc/lib
+/opt/hc/lib/core
+/opt/hc/lib/platform/aix/notify_slack.sh
+/etc/opt/hc
+/etc/opt/hc/core
+/etc/opt/hc/core/providers
+/etc/opt/hc/core/providers/notify_slack.conf.dist
+  EOROOTFiles
+  Relocatable: N
+EOFileset

build/aix/hc_notify_slack/scripts/hc_notify_sms.postinstall

@@ -0,0 +1,51 @@
+#!/usr/bin/env ksh
+#******************************************************************************
+# @(#) post-install script for hc_notify_slack LPP package
+#******************************************************************************
+# @(#) Copyright (C) 2022 by KUDOS BVBA (info@kudos.be).  All rights reserved.
+#
+# This program is a free software; you can redistribute it and/or modify
+# it under the same terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details
+#******************************************************************************
+
+# ------------------------- CONFIGURATION starts here -------------------------
+# location of ETC dir
+HC_ETC_DIR="/etc/opt/hc"
+# location of check_health.sh
+HC_BIN="/opt/hc/bin/check_health.sh"
+PATH="$PATH:/usr/bin:/etc:/usr/sbin:/usr/ucb:/usr/bin/X11:/sbin"
+# ------------------------- CONFIGURATION ends here ---------------------------
+
+print "INFO: starting post-install script ..."
+
+# copy plugin config file from dist (if needed)
+if [[ ! -f ${HC_ETC_DIR}/core/providers/notify_slack.conf ]]
+then
+	cp -p ${HC_ETC_DIR}/core/providers/notify_slack.conf.dist ${HC_ETC_DIR}/core/providers/notify_slack.conf >/dev/null || \
+	{
+		print -u2 "ERROR: could not copy plugin config file in ${HC_ETC_DIR}/core/providers"
+		exit 1
+	}
+fi
+
+# refresh symbolic FPATH links
+if [[ -x ${HC_BIN} ]]
+then
+	${HC_BIN} --fix-symlinks || print -u2 "WARN: updating symlinks failed"
+else
+	print -u2 "ERROR: could not locate or excute the HC main script (${HC_BIN})"
+fi
+
+print "INFO: finished post-install script"
+
+exit 0
+
+#******************************************************************************
+# END of script
+#******************************************************************************

build/aix/hc_notify_slack/scripts/hc_notify_sms.postuninstall

@@ -0,0 +1,48 @@
+#!/usr/bin/env ksh
+#******************************************************************************
+# @(#) post-uninstall script for hc_notify_slack LPP package
+#******************************************************************************
+# @(#) Copyright (C) 2022 by KUDOS BVBA (info@kudos.be).  All rights reserved.
+#
+# This program is a free software; you can redistribute it and/or modify
+# it under the same terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details
+#******************************************************************************
+
+# ------------------------- CONFIGURATION starts here -------------------------
+# location of the HC configuration files
+HC_ETC_DIR="/etc/opt/hc"
+# location of check_health.sh
+HC_BIN="/opt/hc/bin/check_health.sh"
+PATH="$PATH:/usr/bin:/etc:/usr/sbin:/usr/ucb:/usr/bin/X11:/sbin"
+# ------------------------- CONFIGURATION ends here ---------------------------
+
+print "INFO: starting post-uninstall script ..."
+
+# remove plugin configuration file (.dist only)
+if [[ -d ${HC_ETC_DIR}/core/providers ]]
+then
+    rm -f ${HC_ETC_DIR}/core/providers/notify_slack.conf.dist >/dev/null
+    (( $? == 0 )) || echo "WARN: could not remove plugin config file in directory ${HC_ETC_DIR}/core/providers"
+fi
+
+# refresh symbolic FPATH links
+if [[ -x ${HC_BIN} ]]
+then
+	${HC_BIN} --fix-symlinks || print -u2 "WARN: updating symlinks failed"
+else
+	print -u2 "ERROR: could not locate or excute the HC main script (${HC_BIN})"
+fi
+
+print "INFO: finished post-uninstall script"
+
+exit 0
+
+#******************************************************************************
+# END of script
+#******************************************************************************

build/hpux/hc_hpux_platform/hc_hpux_platform.psf

@@ -63,6 +63,7 @@ This is the OS/platform plugin package"
         file            -m 755 check_hpux_autopath.sh
         file            -m 755 check_hpux_cdsf_cluster.sh
         file            -m 755 check_hpux_cron_status.sh
+        file            -m 755 check_hpux_defunct_processes.sh
         file            -m 755 check_hpux_drd_status.sh
         file            -m 755 check_hpux_file_age.sh
         file            -m 755 check_hpux_file_change.sh
@@ -72,7 +73,7 @@ This is the OS/platform plugin package"
         file            -m 755 check_hpux_ignite_backup.sh
         file            -m 755 check_hpux_ioscan.sh
         file            -m 755 check_hpux_guid_status.sh
-        file            -m 644 check_hpux_hpvm_vpar_status.sh
+        file            -m 755 check_hpux_hpvm_vpar_status.sh
         file            -m 755 check_hpux_httpd_status.sh
         file            -m 755 check_hpux_kernel_params.sh
         file            -m 755 check_hpux_kernel_usage.sh
@@ -87,6 +88,7 @@ This is the OS/platform plugin package"
         file            -m 755 check_hpux_sshd_status.sh
         file            -m 755 check_hpux_syslog.sh
         file            -m 755 check_hpux_syslogd_status.sh
+        file            -m 755 check_hpux_uptime.sh
         file            -m 755 check_hpux_vg_minor_number.sh
     end
 
@@ -104,6 +106,8 @@ This is the OS/platform plugin package"
 
         directory       ../../../etc/opt/hc/=/etc/opt/hc
         file            -m 644 check_hpux_autofs.conf.dist
+        file            -m 644 check_hpux_cron_status.conf.dist
+        file            -m 644 check_hpux_defunct_processes.conf.dist
         file            -m 644 check_hpux_drd_status.conf.dist
         file            -m 644 check_hpux_file_age.conf.dist
         file            -m 644 check_hpux_file_change.conf.dist
@@ -115,11 +119,12 @@ This is the OS/platform plugin package"
         file            -m 644 check_hpux_kernel_params.conf.dist
         file            -m 644 check_hpux_kernel_usage.conf.dist
         file            -m 644 check_hpux_ntp_status.conf.dist
-        file            -m 755 check_hpux_ovpa_status.conf.dist
-        file            -m 755 check_hpux_patch_version.conf.dist
+        file            -m 644 check_hpux_ovpa_status.conf.dist
+        file            -m 644 check_hpux_patch_version.conf.dist
         file            -m 644 check_hpux_root_crontab.conf.dist
         file            -m 644 check_hpux_sfm_status.conf.dist
         file            -m 644 check_hpux_syslog.conf.dist
+        file            -m 644 check_hpux_uptime.conf.dist
     end
 
     fileset

build/hpux/hc_notify_slack/hc_notify_slack.psf

@@ -0,0 +1,80 @@
+# Depot definition:
+depot
+    layout_version  1.0
+
+# Vendor definition:
+vendor
+        tag             KUDOS
+        title           "KUDOS BVBA - http://www.kudos.be"
+end
+
+# Bundle definitions:
+bundle
+        tag             HC-NOTIFY-SLACK
+        title           "The Health Checker (HC) for UNIX (core SLACK plugin)"
+        os_name         HP-UX
+        revision        %BUILD_DATE%
+        architecture    HP-UX_B.11_32/64
+        machine_type    ia64*
+        vendor_tag      KUDOS
+        contents        HC-NOTIFY-SLACK-MAIN,r=,a=,v=
+end
+
+# Product definitions:
+product
+    tag             HC-NOTIFY-SLACK-MAIN
+    revision        %BUILD_DATE%
+    category        tools
+    category_title  Tools
+    title           "The Health Checker (HC) for UNIX (OS plugins)"
+    description     "The Health Checker is collection of scripts (plugins)
+designed to perform regular - but not intensive - health checks on
+UNIX/Linux systems. It provides plugins for AIX, HP-UX and Linux as
+well customer specific checks. Checks may include topics such file
+system mounts, process checks, file consistency etc.
+This is the core SLACK plugin package"
+    architecture    S700/S800_HP-UX_10/HP-UX_11/IA64_HP-UX_11
+    machine_type    9000/7*|9000/8*|ia64*
+    os_name         HP-UX
+    os_release      ?.1?.*
+    os_version      [A-Z]
+    directory       /opt/hc
+    is_locatable    false
+    is_patch        false
+
+    postinstall     scripts/hc_notify_slack.postinstall
+    postremove      scripts/hc_notify_slack.postremove
+
+    # Fileset definitions:
+    fileset
+        tag             core_plugins
+        title           UX Health Checker (core SLACK plugins)
+        is_kernel       false
+        is_locatable    false
+        is_reboot       false
+        is_sparse       false
+        is_patch        false
+        prerequisite    HC-HPUX-MAIN
+
+        file_permissions -u 0222 -o root -g sys
+
+        directory       ../../../opt/hc/lib/core=/opt/hc/lib/core
+        file            -m 755 notify_slack.sh
+    end
+
+    fileset
+        tag             config
+        title           UX Health Checker (core SLACK plugins: configuration)
+        is_kernel       false
+        is_locatable    false
+        is_reboot       false
+        is_sparse       false
+        is_patch        false
+        prerequisite    HC-NOTIFY-SLACK-MAIN.core_plugins
+
+        file_permissions -u 0222 -o root -g sys
+
+        directory       ../../../etc/opt/hc/core/providers=/etc/opt/hc/core/providers
+        file            -m 644 notify_slack.conf.dist
+    end
+end

build/hpux/hc_notify_slack/scripts/hc_notify_slack.postinstall

@@ -0,0 +1,51 @@
+#!/usr/bin/env ksh
+#******************************************************************************
+# @(#) post-install script for HC-NOTIFY-SLACK SD package
+#******************************************************************************
+# @(#) Copyright (C) 2022 by KUDOS BVBA (info@kudos.be).  All rights reserved.
+#
+# This program is a free software; you can redistribute it and/or modify
+# it under the same terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details
+#******************************************************************************
+
+# ------------------------- CONFIGURATION starts here -------------------------
+# location of ETC dir
+HC_ETC_DIR="/etc/opt/hc"
+# location of check_health.sh
+HC_BIN="/opt/hc/bin/check_health.sh"
+PATH="$PATH:/usr/bin:/etc:/usr/sbin:/usr/ucb:/usr/bin/X11:/sbin"
+# ------------------------- CONFIGURATION ends here ---------------------------
+
+print "INFO: starting post-install script ..."
+
+# copy plugin config file from dist (if needed)
+if [[ ! -f ${HC_ETC_DIR}/core/providers/notify_slack.conf ]]
+then
+	cp -p ${HC_ETC_DIR}/core/providers/notify_slack.conf.dist ${HC_ETC_DIR}/core/providers/notify_slack.conf >/dev/null || \
+	{
+		print -u2 "ERROR: could not copy plugin config file in ${HC_ETC_DIR}/core/providers"
+		exit 1
+	}
+fi
+
+# refresh symbolic FPATH links
+if [[ -x ${HC_BIN} ]]
+then
+	${HC_BIN} --fix-symlinks || print -u2 "WARN: updating symlinks failed"
+else
+	print -u2 "ERROR: could not locate or excute the HC main script (${HC_BIN})"
+fi
+
+print "INFO: finished post-install script"
+
+exit 0
+
+#******************************************************************************
+# END of script
+#******************************************************************************

build/hpux/hc_notify_slack/scripts/hc_notify_slack.postremove

@@ -0,0 +1,48 @@
+#!/usr/bin/env ksh
+#******************************************************************************
+# @(#) post-remove script for HC-NOTIFY-SLACK SD package
+#******************************************************************************
+# @(#) Copyright (C) 2022 by KUDOS BVBA (info@kudos.be).  All rights reserved.
+#
+# This program is a free software; you can redistribute it and/or modify
+# it under the same terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details
+#******************************************************************************
+
+# ------------------------- CONFIGURATION starts here -------------------------
+# location of the HC configuration files
+HC_ETC_DIR="/etc/opt/hc"
+# location of check_health.sh
+HC_BIN="/opt/hc/bin/check_health.sh"
+PATH="$PATH:/usr/bin:/etc:/usr/sbin:/usr/ucb:/usr/bin/X11:/sbin"
+# ------------------------- CONFIGURATION ends here ---------------------------
+
+print "INFO: starting post-remove script ..."
+
+# remove plugin configuration file (.dist only)
+if [[ -d ${HC_ETC_DIR}/core/providers ]]
+then
+    rm -f ${HC_ETC_DIR}/core/providers/notify_slack.conf.dist >/dev/null
+    (( $? == 0 )) || echo "WARN: could not remove plugin config file in directory ${HC_ETC_DIR}/core/providers"
+fi
+
+# refresh symbolic FPATH links
+if [[ -x ${HC_BIN} ]]
+then
+	${HC_BIN} --fix-symlinks || print -u2 "WARN: updating symlinks failed"
+else
+	print -u2 "ERROR: could not locate or excute the HC main script (${HC_BIN})"
+fi
+
+print "INFO: finished post-remove script"
+
+exit 0
+
+#******************************************************************************
+# END of script
+#******************************************************************************

build/linux/ARCH/hc-linux-platform/PKGBUILD

@@ -22,8 +22,10 @@ package() {
     install -D -m 755 opt/hc/lib/platform/linux/check_linux_autofs.sh ${pkgdir}/opt/hc/lib/platform/linux/check_linux_autofs.sh
     install -D -m 755 opt/hc/lib/platform/linux/check_linux_burp_backup.sh ${pkgdir}/opt/hc/lib/platform/linux/check_linux_burp_backup.sh
     install -D -m 755 opt/hc/lib/platform/linux/check_linux_burp_status.sh ${pkgdir}/opt/hc/lib/platform/linux/check_linux_burp_status.sh
+    install -D -m 755 opt/hc/lib/platform/linux/check_linux_dovecot_status.sh ${pkgdir}/opt/hc/lib/platform/linux/check_linux_dovecot_status.sh
     install -D -m 755 opt/hc/lib/platform/linux/check_linux_es_status.sh ${pkgdir}/opt/hc/lib/platform/linux/check_linux_es_status.sh
     install -D -m 755 opt/hc/lib/platform/linux/check_linux_fail2ban_status.sh ${pkgdir}/opt/hc/lib/platform/linux/check_linux_fail2ban_status.sh
+    install -D -m 755 opt/hc/lib/platform/linux/check_linux_fetchmail_status.sh ${pkgdir}/opt/hc/lib/platform/linux/check_linux_fetchmail_status.sh
     install -D -m 755 opt/hc/lib/platform/linux/check_linux_file_age.sh ${pkgdir}/opt/hc/lib/platform/linux/check_linux_file_age.sh
     install -D -m 755 opt/hc/lib/platform/linux/check_linux_file_change.sh ${pkgdir}/opt/hc/lib/platform/linux/check_linux_file_change.sh
     install -D -m 755 opt/hc/lib/platform/linux/check_linux_fs_mounts.sh ${pkgdir}/opt/hc/lib/platform/linux/check_linux_fs_mounts.sh
@@ -43,6 +45,7 @@ package() {
     install -D -m 755 opt/hc/lib/platform/linux/check_linux_hpssacli.sh ${pkgdir}/opt/hc/lib/platform/linux/check_linux_hpssacli.sh
     install -D -m 755 opt/hc/lib/platform/linux/check_linux_process_limits.sh ${pkgdir}/opt/hc/lib/platform/linux/check_linux_process_limits.sh
     install -D -m 755 opt/hc/lib/platform/linux/check_linux_root_crontab.sh ${pkgdir}/opt/hc/lib/platform/linux/check_linux_root_crontab.sh
+    install -D -m 755 opt/hc/lib/platform/linux/check_linux_uptime.sh ${pkgdir}/opt/hc/lib/platform/linux/check_linux_uptime.sh
     install -D -m 755 opt/hc/lib/platform/linux/check_linux_vz_ct_counters.sh ${pkgdir}/opt/hc/lib/platform/linux/check_linux_vz_ct_counters.sh
     install -D -m 755 opt/hc/lib/platform/linux/check_linux_vz_ct_status.sh ${pkgdir}/opt/hc/lib/platform/linux/check_linux_vz_ct_status.sh
     install -d -m 755 ${pkgdir}/etc/opt/hc
@@ -50,6 +53,7 @@ package() {
     install -D -m 644 etc/opt/hc/check_linux_burp_backup.conf.dist ${pkgdir}/etc/opt/hc/check_linux_burp_backup.conf.dist
     install -D -m 644 etc/opt/hc/check_linux_es_status.conf.dist ${pkgdir}/etc/opt/hc/check_linux_es_status.conf.dist
     install -D -m 644 etc/opt/hc/check_linux_fail2ban_status.conf.dist ${pkgdir}/etc/opt/hc/check_linux_fail2ban_status.conf.dist
+    install -D -m 644 etc/opt/hc/check_linux_fetchmail_status.conf.dist ${pkgdir}/etc/opt/hc/check_linux_fetchmail_status.conf.dist
     install -D -m 644 etc/opt/hc/check_linux_file_age.conf.dist ${pkgdir}/etc/opt/hc/check_linux_file_age.conf.dist
     install -D -m 644 etc/opt/hc/check_linux_file_change.conf.dist ${pkgdir}/etc/opt/hc/check_linux_file_change.conf.dist
     install -D -m 644 etc/opt/hc/check_linux_fs_usage.conf.dist ${pkgdir}/etc/opt/hc/check_linux_fs_usage.conf.dist
@@ -62,6 +66,7 @@ package() {
     install -D -m 644 etc/opt/hc/check_linux_ntp_status.conf.dist ${pkgdir}/etc/opt/hc/check_linux_ntp_status.conf.dist
     install -D -m 644 etc/opt/hc/check_linux_process_limits.conf.dist ${pkgdir}/etc/opt/hc/check_linux_process_limits.conf.dist
     install -D -m 644 etc/opt/hc/check_linux_root_crontab.conf.dist ${pkgdir}/etc/opt/hc/check_linux_root_crontab.conf.dist
+    install -D -m 644 etc/opt/hc/check_linux_uptime.conf.dist ${pkgdir}/etc/opt/hc/check_linux_uptime.conf.dist
     install -D -m 644 etc/opt/hc/check_linux_vz_ct_counters.conf.dist ${pkgdir}/etc/opt/hc/check_linux_vz_ct_counters.conf.dist
     install -D -m 644 etc/opt/hc/check_linux_vz_ct_status.conf.dist ${pkgdir}/etc/opt/hc/check_linux_vz_ct_status.conf.dist
     install -d -m 755 ${pkgdir}/etc/opt/hc/core

build/linux/ARCH/hc-notify-slack/.install

@@ -0,0 +1,33 @@
+# -- post-install --
+post_install() {
+    # ------------------------- CONFIGURATION starts here -------------------------
+    # location of check_health.sh
+    HC_BIN="/opt/hc/bin/check_health.sh"
+    PATH="$PATH:/usr/bin:/etc:/usr/sbin:/usr/ucb:/usr/bin/X11:/sbin"
+    # ------------------------- CONFIGURATION ends here ---------------------------
+    echo "INFO: starting post-install script ..."
+    # refresh symbolic FPATH links
+    if [[ -x ${HC_BIN} ]]
+    then
+        ${HC_BIN} --fix-symlinks
+        (( $? == 0 )) || echo "WARN: updating symlinks failed"
+    fi
+    echo "INFO: finished post-install script"
+}
+
+# -- post-remove --
+post_remove() {
+    # ------------------------- CONFIGURATION starts here -------------------------
+    # location of check_health.sh
+    HC_BIN="/opt/hc/bin/check_health.sh"
+    PATH="$PATH:/usr/bin:/etc:/usr/sbin:/usr/ucb:/usr/bin/X11:/sbin"
+    # ------------------------- CONFIGURATION ends here ---------------------------
+    echo "INFO: starting post-uninstall script ..."
+    # refresh symbolic FPATH links
+    if [[ -x ${HC_BIN} ]]
+    then
+        ${HC_BIN} --fix-symlinks
+        (( $? == 0 )) || echo "WARN: updating symlinks failed"
+    fi
+    echo "INFO: finished post-uninstall script"
+}

build/linux/ARCH/hc-notify-slack/PKGBUILD

@@ -0,0 +1,26 @@
+# Maintainer: Patrick Van der Veken <patrick@kudos.be>
+
+_pkgname="check_health"
+pkgname="hc-notify-slack"
+pkgver="%BUILD_DATE%"
+pkgrel=1
+pkgdesc="The KUDOS Health Checker (HC) for UNIX (Slack notify core plugin)"
+arch=("any")
+url="https://github.com/patvdv/${_pkgname}"
+license=('GPL3')
+makedepends=('git')
+depends=('hc-linux')
+source=("${_pkgname}::git+${url}.git#branch=master")
+install=".install"
+sha256sums=('SKIP')
+
+package() {
+    cd "${srcdir}/${_pkgname}"
+    install -d -m 755 ${pkgdir}/opt/hc/lib
+    install -d -m 755 ${pkgdir}/opt/hc/lib/core
+    install -D -m 755 opt/hc/lib/core/notify_slack.sh ${pkgdir}/opt/hc/lib/core/notify_slack.sh
+    install -d -m 755 ${pkgdir}/etc/opt/hc
+    install -d -m 755 ${pkgdir}/etc/opt/hc/core
+    install -d -m 755 ${pkgdir}/etc/opt/hc/core/providers
+    install -D -m 644 etc/opt/hc/core/providers/notify_slack.conf.dist ${pkgdir}/etc/opt/hc/core/providers/notify_slack.conf.dist
+}

build/linux/DEBIAN/hc-notify-slack/control

@@ -0,0 +1,10 @@
+Package: hc-notify-slack
+Version: %BUILD_DATE%
+Architecture: all
+Maintainer: Patrick Van der Veken <patrick@kudos.be>
+Essential: no
+Installed-Size: 50
+Pre-Depends: hc-linux
+Section: tools
+Priority: extra
+Description: The KUDOS Health Checker (HC) for UNIX (Slack notify core plugin).

build/linux/DEBIAN/hc-notify-slack/postinst

@@ -0,0 +1,33 @@
+#!/bin/bash
+# ------------------------- CONFIGURATION starts here -------------------------
+# location of the HC configuration files
+HC_ETC_DIR="/etc/opt/hc"
+# location of check_health.sh
+HC_BIN="/opt/hc/bin/check_health.sh"
+PATH="$PATH:/usr/bin:/etc:/usr/sbin:/usr/ucb:/usr/bin/X11:/sbin"
+# ------------------------- CONFIGURATION ends here ---------------------------
+echo "INFO: starting post-install script ..."
+# debian: reset ownerships
+chown -R root:root /opt/hc /etc/opt/hc 2>/dev/null
+# copy plugin configuration file
+if [[ -f ${HC_ETC_DIR}/core/providers/notify_slack.conf.dist ]]
+then
+    if [[ ! -f ${HC_ETC_DIR}/core/providers/notify_slack.conf ]]
+    then
+        cp -p ${HC_ETC_DIR}/core/providers/notify_slack.conf.dist ${HC_ETC_DIR}/core/providers/notify_slack.conf >/dev/null
+        (( $? == 0 )) || \
+        {
+            echo "ERROR: could not copy plugin config file in ${HC_ETC_DIR}/core/providers"
+            exit 1
+        }
+    fi
+else
+    echo "WARN: could not find plugin config .dist file in ${HC_ETC_DIR}/core/providers"
+fi
+# refresh symbolic FPATH links
+if [[ -x ${HC_BIN} ]]
+then
+    ${HC_BIN} --fix-symlinks
+    (( $? == 0 )) || echo "WARN: updating symlinks failed"
+fi
+echo "INFO: finished post-install script"

build/linux/DEBIAN/hc-notify-slack/postrm

@@ -0,0 +1,32 @@
+#!/bin/bash
+# ------------------------- CONFIGURATION starts here -------------------------
+# location of the HC configuration files
+HC_ETC_DIR="/etc/opt/hc"
+# location of check_health.sh
+HC_BIN="/opt/hc/bin/check_health.sh"
+PATH="$PATH:/usr/bin:/etc:/usr/sbin:/usr/ucb:/usr/bin/X11:/sbin"
+# ------------------------- CONFIGURATION ends here ---------------------------
+# update or uninstall?
+if (( $1 == 0 ))
+then
+    echo "INFO: starting post-uninstall script ..."
+    # copy plugin configuration file (.dist only)
+    if [[ -d ${HC_ETC_DIR}/core/providers ]]
+    then
+        rm -f ${HC_ETC_DIR}/core/providers/notify_slack.conf.dist 2>/dev/null
+        (( $? == 0 )) || \
+        {
+            echo "ERROR: could not remove plugin config file in ${HC_ETC_DIR}/core/providers"
+            exit 1
+        }
+    fi
+else
+    echo "INFO: starting post-uninstall script (RPM upgrade)"
+fi
+# refresh symbolic FPATH links
+if [[ -x ${HC_BIN} ]]
+then
+    ${HC_BIN} --fix-symlinks
+    (( $? == 0 )) || echo "WARN: updating symlinks failed"
+fi
+echo "INFO: finished post-uninstall script"

build/linux/SPECS/hc-linux-platform.spec

@@ -30,8 +30,10 @@ install -d -m 755 $RPM_BUILD_ROOT/opt/hc/lib/platform/linux
 cp ../SOURCES/opt/hc/lib/platform/linux/check_linux_autofs.sh $RPM_BUILD_ROOT/opt/hc/lib/platform/linux/check_linux_autofs.sh
 cp ../SOURCES/opt/hc/lib/platform/linux/check_linux_burp_backup.sh $RPM_BUILD_ROOT/opt/hc/lib/platform/linux/check_linux_burp_backup.sh
 cp ../SOURCES/opt/hc/lib/platform/linux/check_linux_burp_status.sh $RPM_BUILD_ROOT/opt/hc/lib/platform/linux/check_linux_burp_status.sh
+cp ../SOURCES/opt/hc/lib/platform/linux/check_linux_dovecot_status.sh $RPM_BUILD_ROOT/opt/hc/lib/platform/linux/check_linux_dovecot_status.sh
 cp ../SOURCES/opt/hc/lib/platform/linux/check_linux_es_status.sh $RPM_BUILD_ROOT/opt/hc/lib/platform/linux/check_linux_es_status.sh
 cp ../SOURCES/opt/hc/lib/platform/linux/check_linux_fail2ban_status.sh $RPM_BUILD_ROOT/opt/hc/lib/platform/linux/check_linux_fail2ban_status.sh
+cp ../SOURCES/opt/hc/lib/platform/linux/check_linux_fetchmail_status.sh $RPM_BUILD_ROOT/opt/hc/lib/platform/linux/check_linux_fetchmail_status.sh
 cp ../SOURCES/opt/hc/lib/platform/linux/check_linux_file_age.sh $RPM_BUILD_ROOT/opt/hc/lib/platform/linux/check_linux_file_age.sh
 cp ../SOURCES/opt/hc/lib/platform/linux/check_linux_file_change.sh $RPM_BUILD_ROOT/opt/hc/lib/platform/linux/check_linux_file_change.sh
 cp ../SOURCES/opt/hc/lib/platform/linux/check_linux_fs_mounts.sh $RPM_BUILD_ROOT/opt/hc/lib/platform/linux/check_linux_fs_mounts.sh
@@ -51,6 +53,7 @@ cp ../SOURCES/opt/hc/lib/platform/linux/check_linux_hplog.sh $RPM_BUILD_ROOT/opt
 cp ../SOURCES/opt/hc/lib/platform/linux/check_linux_hpssacli.sh $RPM_BUILD_ROOT/opt/hc/lib/platform/linux/check_linux_hpssacli.sh
 cp ../SOURCES/opt/hc/lib/platform/linux/check_linux_process_limits.sh $RPM_BUILD_ROOT/opt/hc/lib/platform/linux/check_linux_process_limits.sh
 cp ../SOURCES/opt/hc/lib/platform/linux/check_linux_root_crontab.sh $RPM_BUILD_ROOT/opt/hc/lib/platform/linux/check_linux_root_crontab.sh
+cp ../SOURCES/opt/hc/lib/platform/linux/check_linux_uptime.sh $RPM_BUILD_ROOT/opt/hc/lib/platform/linux/check_linux_uptime.sh
 cp ../SOURCES/opt/hc/lib/platform/linux/check_linux_vz_ct_counters.sh $RPM_BUILD_ROOT/opt/hc/lib/platform/linux/check_linux_vz_ct_counters.sh
 cp ../SOURCES/opt/hc/lib/platform/linux/check_linux_vz_ct_status.sh $RPM_BUILD_ROOT/opt/hc/lib/platform/linux/check_linux_vz_ct_status.sh
 install -d -m 755 $RPM_BUILD_ROOT/etc/opt/hc
@@ -58,6 +61,7 @@ cp ../SOURCES/etc/opt/hc/check_linux_autofs.conf.dist $RPM_BUILD_ROOT/etc/opt/hc
 cp ../SOURCES/etc/opt/hc/check_linux_burp_backup.conf.dist $RPM_BUILD_ROOT/etc/opt/hc/check_linux_burp_backup.conf.dist
 cp ../SOURCES/etc/opt/hc/check_linux_es_status.conf.dist $RPM_BUILD_ROOT/etc/opt/hc/check_linux_es_status.conf.dist
 cp ../SOURCES/etc/opt/hc/check_linux_fail2ban_status.conf.dist $RPM_BUILD_ROOT/etc/opt/hc/check_linux_fail2ban_status.conf.dist
+cp ../SOURCES/etc/opt/hc/check_linux_fetchmail_status.conf.dist $RPM_BUILD_ROOT/etc/opt/hc/check_linux_fetchmail_status.conf.dist
 cp ../SOURCES/etc/opt/hc/check_linux_file_age.conf.dist $RPM_BUILD_ROOT/etc/opt/hc/check_linux_file_age.conf.dist
 cp ../SOURCES/etc/opt/hc/check_linux_file_change.conf.dist $RPM_BUILD_ROOT/etc/opt/hc/check_linux_file_change.conf.dist
 cp ../SOURCES/etc/opt/hc/check_linux_fs_usage.conf.dist $RPM_BUILD_ROOT/etc/opt/hc/check_linux_fs_usage.conf.dist
@@ -70,6 +74,7 @@ cp ../SOURCES/etc/opt/hc/check_linux_mysqld_status.conf.dist $RPM_BUILD_ROOT/etc
 cp ../SOURCES/etc/opt/hc/check_linux_ntp_status.conf.dist $RPM_BUILD_ROOT/etc/opt/hc/check_linux_ntp_status.conf.dist
 cp ../SOURCES/etc/opt/hc/check_linux_process_limits.conf.dist $RPM_BUILD_ROOT/etc/opt/hc/check_linux_process_limits.conf.dist
 cp ../SOURCES/etc/opt/hc/check_linux_root_crontab.conf.dist $RPM_BUILD_ROOT/etc/opt/hc/check_linux_root_crontab.conf.dist
+cp ../SOURCES/etc/opt/hc/check_linux_uptime.conf.dist $RPM_BUILD_ROOT/etc/opt/hc/check_linux_uptime.conf.dist
 cp ../SOURCES/etc/opt/hc/check_linux_vz_ct_counters.conf.dist $RPM_BUILD_ROOT/etc/opt/hc/check_linux_vz_ct_counters.conf.dist
 cp ../SOURCES/etc/opt/hc/check_linux_vz_ct_status.conf.dist $RPM_BUILD_ROOT/etc/opt/hc/check_linux_vz_ct_status.conf.dist
 install -d -m 755 $RPM_BUILD_ROOT/etc/opt/hc/core
@@ -115,8 +120,10 @@ echo "INFO: finished post-uninstall script"
 %attr(755, root, root) /opt/hc/lib/platform/linux/check_linux_autofs.sh
 %attr(755, root, root) /opt/hc/lib/platform/linux/check_linux_burp_backup.sh
 %attr(755, root, root) /opt/hc/lib/platform/linux/check_linux_burp_status.sh
+%attr(755, root, root) /opt/hc/lib/platform/linux/check_linux_dovecot_status.sh
 %attr(755, root, root) /opt/hc/lib/platform/linux/check_linux_es_status.sh
 %attr(755, root, root) /opt/hc/lib/platform/linux/check_linux_fail2ban_status.sh
+%attr(755, root, root) /opt/hc/lib/platform/linux/check_linux_fetchmail_status.sh
 %attr(755, root, root) /opt/hc/lib/platform/linux/check_linux_file_age.sh
 %attr(755, root, root) /opt/hc/lib/platform/linux/check_linux_file_change.sh
 %attr(755, root, root) /opt/hc/lib/platform/linux/check_linux_fs_mounts.sh
@@ -136,6 +143,7 @@ echo "INFO: finished post-uninstall script"
 %attr(755, root, root) /opt/hc/lib/platform/linux/check_linux_hpssacli.sh
 %attr(755, root, root) /opt/hc/lib/platform/linux/check_linux_process_limits.sh
 %attr(755, root, root) /opt/hc/lib/platform/linux/check_linux_root_crontab.sh
+%attr(755, root, root) /opt/hc/lib/platform/linux/check_linux_uptime.sh
 %attr(755, root, root) /opt/hc/lib/platform/linux/check_linux_vz_ct_counters.sh
 %attr(755, root, root) /opt/hc/lib/platform/linux/check_linux_vz_ct_status.sh
 %dir /etc/opt/hc
@@ -143,6 +151,7 @@ echo "INFO: finished post-uninstall script"
 %attr(644, root, root) /etc/opt/hc/check_linux_burp_backup.conf.dist
 %attr(644, root, root) /etc/opt/hc/check_linux_es_status.conf.dist
 %attr(644, root, root) /etc/opt/hc/check_linux_fail2ban_status.conf.dist
+%attr(644, root, root) /etc/opt/hc/check_linux_fetchmail_status.conf.dist
 %attr(644, root, root) /etc/opt/hc/check_linux_file_age.conf.dist
 %attr(644, root, root) /etc/opt/hc/check_linux_file_change.conf.dist
 %attr(644, root, root) /etc/opt/hc/check_linux_fs_usage.conf.dist
@@ -155,6 +164,7 @@ echo "INFO: finished post-uninstall script"
 %attr(644, root, root) /etc/opt/hc/check_linux_ntp_status.conf.dist
 %attr(644, root, root) /etc/opt/hc/check_linux_process_limits.conf.dist
 %attr(644, root, root) /etc/opt/hc/check_linux_root_crontab.conf.dist
+%attr(644, root, root) /etc/opt/hc/check_linux_uptime.conf.dist
 %attr(644, root, root) /etc/opt/hc/check_linux_vz_ct_counters.conf.dist
 %attr(644, root, root) /etc/opt/hc/check_linux_vz_ct_status.conf.dist
 %dir /etc/opt/hc/core
@@ -163,6 +173,11 @@ echo "INFO: finished post-uninstall script"
 %attr(644, root, root) /etc/opt/hc/core/templates/mail_body.tpl-check_linux_root_crontab
 
 %changelog
+* Sat Dec 26 2020 <patrick@kudos.be> - 0.3.5
+- Added check_linux_fetchmail_status plugin
+- Added check_linux_dovecot_status plugin
+* Mon Dec 21 2020 <patrick@kudos.be> - 0.3.4
+- Added check_linux_uptime plugin
 * Fri Oct 18 2020 <patrick@kudos.be> - 0.3.3
 - Added check_linux_fail2ban_status plugin
 * Fri Nov  1 2019 <patrick@kudos.be> - 0.3.2

build/linux/SPECS/hc-notify-slack.spec

@@ -0,0 +1,107 @@
+%define build_timestamp %(date +"%Y%m%d")
+
+Name:           hc-notify-slack
+Version:        %{build_timestamp}
+Release:        1
+
+Summary:        The KUDOS Health Checker (HC) for UNIX (Slack notify core plugin)
+Group:          Tools/Monitoring
+
+License:        GNU General Public License either version 2 of the License, or (at your option) any later version
+URL:            http://www.kudos.be
+
+Requires:       ksh,hc-linux
+BuildArch:      noarch
+BuildRoot:      %{_topdir}/%{name}-%{version}-root
+
+%description
+The Health Checker is collection of scripts (plugins) designed to perform regular - but not intensive - health checks on UNIX/Linux systems. It provides plugins for AIX, HP-UX and Linux as well customer specific checks. Checks may include topics such file system mounts, process checks, file consistency etc.
+This package contains core plugins (notify).
+
+%prep
+
+%build
+
+%install
+rm -rf $RPM_BUILD_ROOT
+install -d -m 755 $RPM_BUILD_ROOT/opt/hc/lib
+install -d -m 755 $RPM_BUILD_ROOT/opt/hc/lib/core
+cp ../SOURCES/opt/hc/lib/core/notify_slack.sh $RPM_BUILD_ROOT/opt/hc/lib/core/notify_slack.sh
+install -d -m 755 $RPM_BUILD_ROOT/etc/opt/hc
+install -d -m 755 $RPM_BUILD_ROOT/etc/opt/hc/core
+install -d -m 755 $RPM_BUILD_ROOT/etc/opt/hc/core/providers
+cp ../SOURCES/etc/opt/hc/core/providers/notify_slack.conf.dist $RPM_BUILD_ROOT/etc/opt/hc/core/providers/notify_slack.conf.dist
+
+%post
+# ------------------------- CONFIGURATION starts here -------------------------
+# location of the HC configuration files
+HC_ETC_DIR="/etc/opt/hc"
+# location of check_health.sh
+HC_BIN="/opt/hc/bin/check_health.sh"
+PATH="$PATH:/usr/bin:/etc:/usr/sbin:/usr/ucb:/usr/bin/X11:/sbin"
+# ------------------------- CONFIGURATION ends here ---------------------------
+echo "INFO: starting post-install script ..."
+# copy plugin configuration file
+if [[ ! -f ${HC_ETC_DIR}/core/providers/notify_slack.conf ]]
+then
+    cp -p ${HC_ETC_DIR}/core/providers/notify_slack.conf.dist ${HC_ETC_DIR}/core/providers/notify_slack.conf >/dev/null
+    (( $? == 0 )) || \
+    {
+        echo "ERROR: could not copy plugin config file in ${HC_ETC_DIR}/core/providers"
+        exit 1
+    }
+fi
+# refresh symbolic FPATH links
+if [[ -x ${HC_BIN} ]]
+then
+    ${HC_BIN} --fix-symlinks
+    (( $? == 0 )) || echo "WARN: updating symlinks failed"
+fi
+echo "INFO: finished post-install script"
+
+%postun
+# ------------------------- CONFIGURATION starts here -------------------------
+# location of the HC configuration files
+HC_ETC_DIR="/etc/opt/hc"
+# location of check_health.sh
+HC_BIN="/opt/hc/bin/check_health.sh"
+PATH="$PATH:/usr/bin:/etc:/usr/sbin:/usr/ucb:/usr/bin/X11:/sbin"
+# ------------------------- CONFIGURATION ends here ---------------------------
+# update or uninstall?
+if (( $1 == 0 ))
+then
+    echo "INFO: starting post-uninstall script ..."
+    # copy plugin configuration file (.dist only)
+    if [[ -d ${HC_ETC_DIR}/core/providers ]]
+    then
+        rm -f ${HC_ETC_DIR}/core/providers/notify_slack.conf.dist 2>/dev/null
+        (( $? == 0 )) || \
+        {
+            echo "ERROR: could not remove plugin config file in ${HC_ETC_DIR}/core/providers"
+            exit 1
+        }
+    fi
+else
+    echo "INFO: starting post-uninstall script (RPM upgrade)"
+fi
+# refresh symbolic FPATH links
+if [[ -x ${HC_BIN} ]]
+then
+    ${HC_BIN} --fix-symlinks
+    (( $? == 0 )) || echo "WARN: updating symlinks failed"
+fi
+echo "INFO: finished post-uninstall script"
+
+%files
+%defattr(-,root,root,755)
+%dir /opt/hc/lib
+%dir /opt/hc/lib/core
+%attr(755, root, root) /opt/hc/lib/core/notify_slack.sh
+%dir /etc/opt/hc
+%dir /etc/opt/hc/core
+%dir /etc/opt/hc/core/providers
+%attr(644, root, root) /etc/opt/hc/core/providers/notify_slack.conf.dist
+
+%changelog
+* Sun Oct 14 2022 <patrick@kudos.be> - 0.0.1
+- Initial build

build/linux/hc_build_linux_rpms.sh

@@ -47,6 +47,7 @@ rpmbuild -bb ${BUILD_DIR}/SPECS/hc-linux-platform.spec
 # build core plugins
 rpmbuild -bb ${BUILD_DIR}/SPECS/hc-notify-eif.spec
 rpmbuild -bb ${BUILD_DIR}/SPECS/hc-notify-sms.spec
+rpmbuild -bb ${BUILD_DIR}/SPECS/hc-notify-slack.spec
 rpmbuild -bb ${BUILD_DIR}/SPECS/hc-display-init.spec
 rpmbuild -bb ${BUILD_DIR}/SPECS/hc-display-json.spec
 rpmbuild -bb ${BUILD_DIR}/SPECS/hc-display-csv.spec

etc/opt/hc/check_aix_uptime.conf.dist

@@ -0,0 +1,41 @@
+#******************************************************************************
+# @(#) check_aix_uptime.conf
+#******************************************************************************
+# This is a configuration file for the check_aix_uptime HC plugin.
+# All lines starting with a '#' are comment lines.
+# [default: indicates hardcoded script values if no value is defined here]
+#******************************************************************************
+
+# specify whether to also log passed health checks
+# (warning: this may rapidly grow the HC log)
+# [default: no]
+log_healthy="no"
+
+# trigger event when current uptime is less than previously record uptime?
+# [default: yes]
+check_reboot="yes"
+
+# time to wait before the current uptime is considered for the reboot check.
+# Example: a value of 60m means the check for a previous reboot will be at earliest
+#          performed 1 hour after the last reboot of the host.
+# Format: <value>m|h|d where m=minutes, h=hours, d=days (lowercase suffix).
+#         if no suffix is specified, then minutes are assumed.
+# [default: 60m]
+reboot_time="60m"
+
+# trigger event when current uptime goes over the maximum threshold?
+# [default: no]
+check_old_age="no"
+
+# time to expire before the current uptime is considered "old age".
+# Example: a value of 365d means a must-reboot will be flagged at earliest after
+#          1 year of uptime of the host
+# Format: <value>m|h|d where m=minutes, h=hours, d=days (lowercase suffix).
+#         if no suffix is specified, then minutes are assumed.
+# [default: 365d]
+old_age_time="365d"
+
+
+#******************************************************************************
+# End of FILE
+#******************************************************************************

etc/opt/hc/check_hpux_cron_status.conf.dist

@@ -0,0 +1,25 @@
+#******************************************************************************
+# @(#) check_hpux_cron_status.conf
+#******************************************************************************
+# This is a configuration file for the check_hpux_cron_status HC plugin.
+# All lines starting with a '#' are comment lines.
+# [default: indicates hardcoded script values if no value is defined here]
+#******************************************************************************
+
+# specify whether to also log passed health checks
+# (warning: this may rapidly grow the HC log)
+# [default: no]
+log_healthy="no"
+
+# specify the wait time (in seconds) between registering and checking a cron task
+# [default: 10]
+wait_time=10
+
+# specify the path the cron log file
+# [default: /var/adm/cron/log]
+cron_log="/var/adm/cron/log"
+
+
+#******************************************************************************
+# End of FILE
+#******************************************************************************

etc/opt/hc/check_hpux_defunct_processes.conf.dist

@@ -0,0 +1,27 @@
+#******************************************************************************
+# @(#) check_hpux_defunct_processes.conf
+#******************************************************************************
+# This is a configuration file for the check_hpux_defunct_processes HC plugin.
+# All lines starting with a '#' are comment lines.
+# [default: indicates hardcoded script values if no value is defined here]
+#******************************************************************************
+
+# specify whether to also log passed health checks
+# (warning: this may rapidly grow the HC log)
+# [default: no]
+log_healthy="yes"
+
+# specify above which threshold of defunct processes to generate a HC fail event
+# If group_by_ppid is set to 'yes' then the value of 'process_threshold' will
+# apply for each PPID, otherwise it will apply to all defunct processes together
+# [default: 10]
+process_threshold=10
+
+# specify whether to group by parent ID or not.
+# [default: yes]
+group_by_ppid="yes"
+
+
+#******************************************************************************
+# End of FILE
+#******************************************************************************

etc/opt/hc/check_hpux_uptime.conf.dist

@@ -0,0 +1,41 @@
+#******************************************************************************
+# @(#) check_hpux_uptime.conf
+#******************************************************************************
+# This is a configuration file for the check_hpux_uptime HC plugin.
+# All lines starting with a '#' are comment lines.
+# [default: indicates hardcoded script values if no value is defined here]
+#******************************************************************************
+
+# specify whether to also log passed health checks
+# (warning: this may rapidly grow the HC log)
+# [default: no]
+log_healthy="no"
+
+# trigger event when current uptime is less than previously record uptime?
+# [default: yes]
+check_reboot="yes"
+
+# time to wait before the current uptime is considered for the reboot check.
+# Example: a value of 60m means the check for a previous reboot will be at earliest
+#          performed 1 hour after the last reboot of the host.
+# Format: <value>m|h|d where m=minutes, h=hours, d=days (lowercase suffix).
+#         if no suffix is specified, then minutes are assumed.
+# [default: 60m]
+reboot_time="60m"
+
+# trigger event when current uptime goes over the maximum threshold?
+# [default: no]
+check_old_age="no"
+
+# time to expire before the current uptime is considered "old age".
+# Example: a value of 365d means a must-reboot will be flagged at earliest after
+#          1 year of uptime of the host
+# Format: <value>m|h|d where m=minutes, h=hours, d=days (lowercase suffix).
+#         if no suffix is specified, then minutes are assumed.
+# [default: 365d]
+old_age_time="365d"
+
+
+#******************************************************************************
+# End of FILE
+#******************************************************************************

etc/opt/hc/check_linux_fetchmail_status.conf.dist

@@ -0,0 +1,28 @@
+#******************************************************************************
+# @(#) check_linux_fetchmail_status.conf
+#******************************************************************************
+# This is a configuration file for the check_linux_fetchmail_status HC plugin.
+# All lines starting with a '#' are comment lines.
+# [default: indicates hardcoded script values if no value is defined here]
+#******************************************************************************
+
+# specify whether to also log passed health checks
+# (warning: this may rapidly grow the HC log)
+# [default: no]
+log_healthy="no"
+
+# specify the regex of error codes that will be used to search the log file_path
+# [default: error|authfail|lockbusy|ioerr]
+error_regex="error|authfail|lockbusy|ioerr"
+
+# specify fetchmail details
+# Format:
+#   fetchmail:<account>:<rc_file>:<check_log=Yes|No>
+# Examples:
+#fetchmail:vmail:/srv/vmail/janedoe/.fetchmailrc:Yes
+#fetchmail:vmail:/srv/vmail/johndoe/.fetchmailrc:No
+
+
+#******************************************************************************
+# End of FILE
+#******************************************************************************

etc/opt/hc/check_linux_ntp_status.conf.dist

@@ -19,6 +19,11 @@ force_chrony="no"
 # [default: no]
 force_ntp="no"
 
+# whether to force the use of systemd-timesyncd?
+# [default: no]
+# [release >20220129]
+force_systemd="no"
+
 # maximum allowed offset (in milliseconds (positive integers only)
 # [default: 500]
 max_offset=500

etc/opt/hc/check_linux_uptime.conf.dist

@@ -0,0 +1,41 @@
+#******************************************************************************
+# @(#) check_linux_uptime.conf
+#******************************************************************************
+# This is a configuration file for the check_linux_uptime HC plugin.
+# All lines starting with a '#' are comment lines.
+# [default: indicates hardcoded script values if no value is defined here]
+#******************************************************************************
+
+# specify whether to also log passed health checks
+# (warning: this may rapidly grow the HC log)
+# [default: no]
+log_healthy="no"
+
+# trigger event when current uptime is less than previously record uptime?
+# [default: yes]
+check_reboot="yes"
+
+# time to wait before the current uptime is considered for the reboot check.
+# Example: a value of 60m means the check for a previous reboot will be at earliest
+#          performed 1 hour after the last reboot of the host.
+# Format: <value>m|h|d where m=minutes, h=hours, d=days (lowercase suffix).
+#         if no suffix is specified, then minutes are assumed.
+# [default: 60m]
+reboot_time="60m"
+
+# trigger event when current uptime goes over the maximum threshold?
+# [default: no]
+check_old_age="no"
+
+# time to expire before the current uptime is considered "old age".
+# Example: a value of 365d means a must-reboot will be flagged at earliest after
+#          1 year of uptime of the host
+# Format: <value>m|h|d where m=minutes, h=hours, d=days (lowercase suffix).
+#         if no suffix is specified, then minutes are assumed.
+# [default: 365d]
+old_age_time="365d"
+
+
+#******************************************************************************
+# End of FILE
+#******************************************************************************

etc/opt/hc/core/check_health.conf.dist

@@ -31,6 +31,10 @@ HC_REPORT_CACHE_LAST="No"
 # [values: Yes|No]
 HC_REPORT_CACHE_TODAY="No"
 
+# Show log entry count(s) after archiving. Disabling this will speed up archiving.
+# [values: Yes|No]
+HC_COUNT_ARCHIVES="Yes"
+
 
 #******************************************************************************
 # End of FILE

etc/opt/hc/core/providers/notify_slack.conf.dist

@@ -0,0 +1,15 @@
+#******************************************************************************
+# @(#) notify_slack.conf
+#******************************************************************************
+# This is the the configuration file for the notify_slack.sh provider.
+# All lines starting with a '#' are comment lines.
+# [default: indicates hardcoded script values if no value is defined here]
+#******************************************************************************
+
+# URL of the webhook of the Slack app
+SLACK_WEBHOOK=""
+
+
+#******************************************************************************
+# End of FILE
+#******************************************************************************

opt/hc/bin/check_health.sh

@@ -23,8 +23,8 @@
 # REQUIRES: ksh88/93 (mksh/pdksh will probably work too but YMMV)
 #           build_fpath(), check_config(), check_core(), check_lock_dir(),
 #           check_params(), check_platform(), check_user(), check_shell(),
-#           display_usage(), do_cleanup, fix_symlinks(), read_config()
-#           + include functions
+#           display_usage(), do_cleanup, fix_symlinks(), get_disable_comment(),
+#           read_config() + include functions
 #           For other pre-requisites see the documentation in display_usage()
 # REQUIRES (OPTIONAL): display_*(), notify_*(), report_*()
 # EXISTS: 0=no errors encountered, >0=some errors encountered
@@ -38,7 +38,7 @@
 
 # ------------------------- CONFIGURATION starts here -------------------------
 # define the version (YYYY-MM-DD)
-typeset -r SCRIPT_VERSION="2020-04-07"
+typeset -r SCRIPT_VERSION="2021-03-31"
 # location of parent directory containing KSH functions/HC plugins
 typeset -r FPATH_PARENT="/opt/hc/lib"
 # location of custom HC configuration files
@@ -86,8 +86,8 @@ typeset EXIT_CODE=0
 typeset FDIR=""
 typeset FFILE=""
 typeset FPATH=""
-typeset HC_ARCHIVE=""
 typeset HC_CHECK=""
+typeset HC_COMMENT=""
 typeset HC_DISABLE=""
 typeset HC_ENABLE=""
 typeset HC_RUN=""
@@ -102,6 +102,10 @@ typeset HC_MIN_TIME_OUT=30
 typeset HC_MSG_VAR=""
 typeset HC_STDOUT_LOG=""
 typeset HC_STDERR_LOG=""
+set -A HC_STDOUT_LOG_ARRAY
+set -A HC_STDERR_LOG_ARRAY
+# shellcheck disable=SC2034
+typeset HC_COUNT_ARCHVES=""
 typeset HC_WILL_FIX=""
 # shellcheck disable=SC2034
 typeset HC_REPORT_CACHE_LAST=""
@@ -111,6 +115,7 @@ typeset HC_REPORT_CACHE_TODAY=""
 typeset LINUX_DISTRO=""
 # shellcheck disable=SC2034
 typeset LINUX_RELEASE=""
+typeset PREVIOUS_HC_TIME_OUT=""
 typeset ARCHIVE_RC=0
 typeset DISABLE_RC=0
 typeset ENABLE_RC=0
@@ -126,6 +131,7 @@ typeset DEBUG_OPTS=""
 # command-line parameters
 typeset ARG_ACTION=0            # HC action flag
 typeset ARG_CHECK_HOST=0        # host check is off by default
+typeset ARG_COMMENT=""
 typeset ARG_CONFIG_FILE=""      # custom configuration file for a HC, none by default
 typeset ARG_DEBUG=0             # debug is off by default
 typeset ARG_DEBUG_LEVEL=0       # debug() only by default
@@ -285,7 +291,7 @@ case "${KSH_VERSION}" in
                 # shellcheck source=/dev/null
                 (( ARG_DEBUG > 0 )) && print -u2 "DEBUG: including ${INCLUDE_FILE}"
                 # shellcheck source=/dev/null
-                . ${INCLUDE_FILE}
+                . "${INCLUDE_FILE}"
             else
                 print -u2 "ERROR: library file ${INCLUDE_FILE} exists but has no symlink. Run --fix-symlinks"
                 exit 1
@@ -334,18 +340,19 @@ function check_lock_dir
 (( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set "${DEBUG_OPTS}"
 if (( ARG_LOCK > 0 ))
 then
-    mkdir ${LOCK_DIR} >/dev/null 2>/dev/null || {
+    mkdir "${LOCK_DIR}" >/dev/null 2>/dev/null || {
         print -u2 "ERROR: unable to acquire lock ${LOCK_DIR}"
         ARG_VERBOSE=0 warn "unable to acquire lock ${LOCK_DIR}"
         if [[ -f ${LOCK_DIR}/.pid ]]
         then
-            typeset LOCK_PID="$(<${LOCK_DIR}/.pid)"
+            # shellcheck disable=SC2086
+            typeset LOCK_PID=$(<"${LOCK_DIR}/.pid")
             print -u2 "ERROR: active health checker running on PID: ${LOCK_PID}"
             ARG_VERBOSE=0 warn "active health checker running on PID: ${LOCK_PID}. Exiting!"
         fi
         exit 1
     }
-    print $$ >${LOCK_DIR}/.pid
+    print $$ > "${LOCK_DIR}/.pid"
 else
     (( ARG_DEBUG > 0 )) && print "DEBUG: locking has been disabled"
 fi
@@ -469,6 +476,15 @@ then
         exit 1
     fi
 fi
+# --comment
+if [[ -n "${ARG_COMMENT}" ]]
+then
+    if (( ARG_ACTION != 2 )) && (( ARG_ACTION != 6 ))
+    then
+        print -u2 "ERROR: you can only use '--comment' in combination with '--disable' or '--disable-all'"
+        exit 1
+    fi
+fi
 # check log location
 if (( ARG_LOG > 0 ))
 then
@@ -570,8 +586,8 @@ cat << EOT
 Execute/report simple health checks (HC) on UNIX hosts.
 
 Syntax: ${SCRIPT_DIR}/${SCRIPT_NAME} [--help] | [--help-terse] | [--version] |
-    [--list=<needle>] | [--list-details] | [--list-core] | [--list-include] | [--fix-symlinks] | [--show-stats] | (--archive-all | --disable-all | --enable-all) | [--fix-logs [--with-history]] |
-        (--check-host | ((--archive | --check | --enable | --disable | --run [--timeout=<secs>] | --show) --hc=<list_of_checks> [--config-file=<configuration_file>] [hc-args="<arg1,arg2=val,arg3">]))
+    [--list=<needle>] | [--list-details] | [--list-core] | [--list-include] | [--fix-symlinks] | [--show-stats] | (--archive-all | --disable-all [--comment=<text>] | --enable-all) | [--fix-logs [--with-history]] |
+        (--check-host | ((--archive | --check | --enable | --disable [--comment=<text>] | --run [--timeout=<secs>] | --show) --hc=<list_of_checks> [--config-file=<configuration_file>] [hc-args="<arg1,arg2=val,arg3">]))
             [--display=<method>] ([--debug] [--debug-level=<level>]) [--log-healthy] [--no-fix] [--no-log] [--no-lock] [--no-monitor] [[--flip-rc] [--with-rc=<count|max|sum>]]]
                 [--notify=<method_list>] [--mail-to=<address_list>] [--sms-to=<sms_rcpt> --sms-provider=<name>]
                     [--report=<method> [--with-history] ( ([--last] | [--today]) | [(--older|--newer)=<date>] | [--reverse] [--id=<fail_id> [--detail]] )]
@@ -587,6 +603,7 @@ Parameters:
 --archive-all   : move events for all HCs from the HC log file into archive log files
 --check         : display HC state.
 --check-host    : execute all configured HC(s) (see check_host.conf)
+--comment       : add comment to requested action (--disable). WARNING: comments may not contain spaces!
 --config-file   : custom configuration file for a HC (may only be specified when executing a single HC plugin)
 --debug         : run script in debug mode
 --debug-level   : level of debugging information to show (0,1,2)
@@ -658,16 +675,28 @@ function do_cleanup
 log "performing cleanup ..."
 
 # remove temporary files
-[[ -f "${HC_MSG_FILE}" ]] && rm -f ${HC_MSG_FILE} >/dev/null 2>&1
+[[ -f "${HC_MSG_FILE}" ]] && rm -f "${HC_MSG_FILE}" >/dev/null 2>&1
 
-# remove trailing log files
-[[ -f "${HC_STDOUT_LOG}" ]] && rm -f ${HC_STDOUT_LOG} >/dev/null 2>&1
-[[ -f "${HC_STDERR_LOG}" ]] && rm -f ${HC_STDERR_LOG} >/dev/null 2>&1
+# remove left over plugin log files (pop from array stacks)
+FILE_COUNT=1
+while (( FILE_COUNT <= ${#HC_STDOUT_LOG_ARRAY[*]} ))
+do
+    (( ARG_DEBUG > 0 )) && debug "cleaning up plugin log file ${HC_STDOUT_LOG_ARRAY[FILE_COUNT]}"
+    [[ -f "${HC_STDOUT_LOG_ARRAY[FILE_COUNT]}" ]] && rm -f "${HC_STDOUT_LOG_ARRAY[FILE_COUNT]}" >/dev/null 2>&1
+    FILE_COUNT=$(( FILE_COUNT + 1 ))
+done
+FILE_COUNT=1
+while (( FILE_COUNT <= ${#HC_STDERR_LOG_ARRAY[*]} ))
+do
+    (( ARG_DEBUG > 0 )) && debug "cleaning up plugin log file ${HC_STDERR_LOG_ARRAY[FILE_COUNT]}"
+    [[ -f "${HC_STDERR_LOG_ARRAY[FILE_COUNT]}" ]] && rm -f "${HC_STDERR_LOG_ARRAY[FILE_COUNT]}" >/dev/null 2>&1
+    FILE_COUNT=$(( FILE_COUNT + 1 ))
+done
 
 # remove lock directory
 if [[ -d ${LOCK_DIR} ]]
 then
-    rm -rf ${LOCK_DIR} >/dev/null 2>&1
+    rm -rf "${LOCK_DIR}" >/dev/null 2>&1
     log "${LOCK_DIR} lock directory removed"
 fi
 
@@ -692,6 +721,7 @@ typeset FSYML=""
 # find missing symlinks (do not skip core plug-ins here)
 print "${FPATH}" | tr ':' '\n' 2>/dev/null | while read -r FDIR
 do
+    # shellcheck disable=SC2086
     find ${FDIR} -type f -print 2>/dev/null | while read -r FFILE
     do
         FSYML="${FFILE%.sh}"
@@ -710,7 +740,7 @@ done
 print "${FPATH}" | tr ':' '\n' 2>/dev/null | while read -r FDIR
 do
     # do not use 'find -type l' here!
-    # shellcheck disable=SC2010
+    # shellcheck disable=SC2010,SC2086
     ls ${FDIR} 2>/dev/null | grep -v "\." 2>/dev/null | while read -r FSYML
     do
         # check if file is a dead symlink
@@ -813,6 +843,12 @@ do
             fi
             ARG_CHECK_HOST=1
             ;;
+        -comment=*)
+            ARG_COMMENT="${CMD_PARAMETER#-comment=}"
+            ;;
+        --comment=*)
+            ARG_COMMENT="${CMD_PARAMETER#--comment=}"
+            ;;
         -config-file=*)
             ARG_CONFIG_FILE="${CMD_PARAMETER#-config-file=}"
             ;;
@@ -1213,7 +1249,13 @@ case ${ARG_ACTION} in
             # shellcheck disable=SC2181
             if (( $? == 0 ))
             then
+                HC_COMMENT=$(get_disable_comment "${HC_CHECK}")
+                if [[ -n "${HC_COMMENT}" ]]
+                then
+                    log "HC ${HC_CHECK} is currently disabled (${HC_COMMENT})"
+                else
                     log "HC ${HC_CHECK} is currently disabled"
+                fi
             else
                 log "HC ${HC_CHECK} is currently enabled"
             fi
@@ -1235,6 +1277,11 @@ case ${ARG_ACTION} in
             exists_hc "${HC_DISABLE}" && die "cannot find HC: ${HC_DISABLE}"
             log "disabling HC: ${HC_DISABLE}"
             touch "${STATE_PERM_DIR}/${HC_DISABLE}.disabled" >/dev/null 2>&1
+            # write comment if supplied
+            if [[ -n "${ARG_COMMENT}" ]]
+            then
+                print "${ARG_COMMENT}" >"${STATE_PERM_DIR}/${HC_DISABLE}.disabled"
+            fi
             # shellcheck disable=SC2181
             if (( $? == 0 ))
             then
@@ -1282,7 +1329,7 @@ case ${ARG_ACTION} in
             # re-initialize messages stash (log of failed checks)
             # shellcheck disable=SC2034
             HC_MSG_VAR=""
-            : >${HC_MSG_FILE} 2>/dev/null
+            : > "${HC_MSG_FILE}" 2>/dev/null
             # shellcheck disable=SC2181
             if (( $? > 0 ))
             then
@@ -1320,13 +1367,16 @@ case ${ARG_ACTION} in
             # set & initialize STDOUT/STDERR locations (not in init_hc()!)
             HC_STDOUT_LOG="${TMP_DIR}/${HC_RUN}.stdout.log.$$"
             HC_STDERR_LOG="${TMP_DIR}/${HC_RUN}.stderr.log.$$"
-            : >${HC_STDOUT_LOG} 2>/dev/null
+            # push plugin log files to array stacks (index starts at 1!)
+            HC_STDOUT_LOG_ARRAY[${#HC_STDOUT_LOG_ARRAY[*]}+1]="${HC_STDOUT_LOG}"
+            HC_STDERR_LOG_ARRAY[${#HC_STDERR_LOG_ARRAY[*]}+1]="${HC_STDERR_LOG}"
+            : > "${HC_STDOUT_LOG}" 2>/dev/null
             # shellcheck disable=SC2181
             if (( $? > 0 ))
             then
                 die "unable to reset the \${HC_STDOUT_LOG} file"
             fi
-            : >${HC_STDERR_LOG} 2>/dev/null
+            : > "${HC_STDERR_LOG}" 2>/dev/null
             # shellcheck disable=SC2181
             if (( $? > 0 ))
             then
@@ -1336,6 +1386,7 @@ case ${ARG_ACTION} in
             # --check-host handling: alternative configuration file, mangle ARG_CONFIG_FILE & HC_TIME_OUT
             if (( ARG_CHECK_HOST == 1 ))
             then
+                PREVIOUS_HC_TIME_OUT=${HC_TIME_OUT}
                 ARG_CONFIG_FILE=""      # reset from previous call
                 RUN_CONFIG_FILE=$(grep -i -E -e "^hc:${HC_RUN}:" ${HOST_CONFIG_FILE} 2>/dev/null | cut -f3 -d':')
                 [[ -n "${RUN_CONFIG_FILE}" ]] && ARG_CONFIG_FILE="${CONFIG_DIR}/${RUN_CONFIG_FILE}"
@@ -1345,13 +1396,14 @@ case ${ARG_ACTION} in
                     (( RUN_TIME_OUT > HC_TIME_OUT )) && HC_TIME_OUT=${RUN_TIME_OUT}
                 else
                     # reset for next HC
-                    HC_TIME_OUT=60
+                    HC_TIME_OUT=${PREVIOUS_HC_TIME_OUT}
                 fi
             fi
 
             # run HC with or without monitor
             if (( ARG_MONITOR == 0 ))
             then
+                # shellcheck disable=SC2086
                 ${HC_RUN} ${ARG_HC_ARGS}
                 RUN_RC=$?
                 EXIT_CODE=${RUN_RC}
@@ -1390,6 +1442,7 @@ case ${ARG_ACTION} in
                 # SLEEP_PID is the PID of the sleep subshell itself
                 SLEEP_PID=$!
 
+                # shellcheck disable=SC2086
                 ${HC_RUN} ${ARG_HC_ARGS} &
                 CHILD_PID=$!
                 log "spawning child process with time-out of ${HC_TIME_OUT} secs for HC call [PID=${CHILD_PID}]"
@@ -1440,7 +1493,7 @@ case ${ARG_ACTION} in
             handle_hc "${HC_RUN}"
             # exit with return code from handle_hc() (see --flip-rc)
             EXIT_CODE=$?
-            rm -f ${HC_MSG_FILE} >/dev/null 2>&1
+            rm -f "${HC_MSG_FILE}" >/dev/null 2>&1
         done
         ;;
     5)  # show info on HC (single)
@@ -1460,6 +1513,11 @@ case ${ARG_ACTION} in
             exists_hc "${HC_DISABLE}" && die "cannot find HC: ${HC_DISABLE}"
             log "disabling HC: ${HC_DISABLE}"
             touch "${STATE_PERM_DIR}/${HC_DISABLE}.disabled" >/dev/null 2>&1
+            # write comment if supplied
+            if [[ -n "${ARG_COMMENT}" ]]
+            then
+                print "${ARG_COMMENT}" >"${STATE_PERM_DIR}/${HC_DISABLE}.disabled"
+            fi
             DISABLE_RC=$?
             if (( DISABLE_RC == 0 ))
             then
@@ -1534,26 +1592,7 @@ case ${ARG_ACTION} in
         esac
         ;;
     13) # archive current log entries for all HCs
-        list_hc "list" | while read -r HC_ARCHIVE
-        do
-            # check for HC (function)
-            exists_hc "${HC_ARCHIVE}" && die "cannot find HC: ${HC_ARCHIVE}"
-            log "archiving current log entries for HC: ${HC_ARCHIVE}"
-            archive_hc "${HC_ARCHIVE}"
-            ARCHIVE_RC=$?
-            case ${ARCHIVE_RC} in
-                0)
-                    log "no archiving needed for ${HC_ARCHIVE}"
-                    ;;
-                1)
-                    log "successfully archived log entries for ${HC_ARCHIVE}"
-                    ;;
-                2)
-                    log "failed to archive log entries for ${HC_ARCHIVE} [RC=${ARCHIVE_RC}]"
-                    EXIT_CODE=1
-                    ;;
-            esac
-        done
+        archive_hc_all
         ;;
 esac
 

opt/hc/lib/core/include_core.sh

@@ -30,7 +30,7 @@
 # RETURNS: 0
 function version_include_core
 {
-typeset _VERSION="2020-04-15"           # YYYY-MM-DD
+typeset _VERSION="2022-10-14"           # YYYY-MM-DD
 
 print "INFO: $0: ${_VERSION#version_*}"
 
@@ -50,6 +50,7 @@ typeset HC_NAME="${1}"
 typeset ARCHIVE_FILE=""
 typeset ARCHIVE_RC=0
 typeset YEAR_MONTH=""
+typeset COUNT_STATS=1
 typeset LOG_COUNT=0
 typeset PRE_LOG_COUNT=0
 typeset TODO_LOG_COUNT=0
@@ -63,15 +64,25 @@ typeset TMP2_FILE="${TMP_DIR}/.$0.tmp2.archive.$$"
 trap "rm -f ${TMP1_FILE} ${TMP2_FILE} ${SAVE_LOG_FILE} >/dev/null 2>&1; return 1" 1 2 3 15
 
 # get pre-archive log count
-PRE_LOG_COUNT=$(wc -l ${HC_LOG} 2>/dev/null | cut -f1 -d' ' 2>/dev/null)
+PRE_LOG_COUNT=$(wc -l "${HC_LOG}" 2>/dev/null | cut -f1 -d' ' 2>/dev/null)
 if (( PRE_LOG_COUNT == 0 ))
 then
     warn "${HC_LOG} is empty, nothing to archive"
     return 0
 fi
 
+# check log count toggle (only affects $LOG_COUNT)
+case "${HC_COUNT_ARCHIVES}" in
+    No|no|NO)
+        COUNT_STATS=0
+        ;;
+    *)
+        : # default is to do additional stats
+        ;;
+esac
+
 # isolate messages from HC, find unique %Y-%m combinations
-grep ".*${LOG_SEP}${HC_NAME}${LOG_SEP}" ${HC_LOG} 2>/dev/null |\
+grep ".*${LOG_SEP}${HC_NAME}${LOG_SEP}" "${HC_LOG}" 2>/dev/null |\
     cut -f1 -d"${LOG_SEP}" 2>/dev/null | cut -f1 -d' ' 2>/dev/null |\
     cut -f1-2 -d'-' 2>/dev/null | sort -u 2>/dev/null |\
     while read -r YEAR_MONTH
@@ -84,50 +95,105 @@ do
     fi
 
     # find all messages for that YEAR-MONTH combination
-    grep "${YEAR_MONTH}.*${LOG_SEP}${HC_NAME}${LOG_SEP}" ${HC_LOG} >${TMP1_FILE}
-    TODO_LOG_COUNT=$(wc -l ${TMP1_FILE} 2>/dev/null | cut -f1 -d' ' 2>/dev/null)
+    grep "${YEAR_MONTH}.*${LOG_SEP}${HC_NAME}${LOG_SEP}" "${HC_LOG}" >"${TMP1_FILE}"
+    TODO_LOG_COUNT=$(wc -l "${TMP1_FILE}" 2>/dev/null | cut -f1 -d' ' 2>/dev/null)
     log "# of entries in ${YEAR_MONTH} to archive: ${TODO_LOG_COUNT}"
 
     # combine existing archived messages and resort
     ARCHIVE_FILE="${ARCHIVE_DIR}/hc.${YEAR_MONTH}.log"
-    cat ${ARCHIVE_FILE} ${TMP1_FILE} 2>/dev/null | sort -u >${TMP2_FILE} 2>/dev/null
-    mv ${TMP2_FILE} ${ARCHIVE_FILE} 2>/dev/null || {
+    cat "${ARCHIVE_FILE}" "${TMP1_FILE}" 2>/dev/null | sort -u >"${TMP2_FILE}" 2>/dev/null
+    mv "${TMP2_FILE}" "${ARCHIVE_FILE}" 2>/dev/null || {
         warn "failed to move archive file, aborting"
         return 2
     }
-    LOG_COUNT=$(wc -l ${ARCHIVE_FILE} 2>/dev/null | cut -f1 -d' ' 2>/dev/null)
+    if (( COUNT_STATS > 0 ))
+    then
+        LOG_COUNT=$(wc -l "${ARCHIVE_FILE}" 2>/dev/null | cut -f1 -d' ' 2>/dev/null)
         log "# of entries in ${ARCHIVE_FILE} now: ${LOG_COUNT}"
+    fi
 
     # remove archived messages from the $HC_LOG (but create a backup first!)
-    cp -p ${HC_LOG} ${SAVE_HC_LOG} 2>/dev/null
+    cp -p "${HC_LOG}" "${SAVE_HC_LOG}" 2>/dev/null
     # compare with the sorted $HC_LOG
-    sort ${HC_LOG} >${TMP1_FILE}
-    comm -23 ${TMP1_FILE} ${ARCHIVE_FILE} 2>/dev/null >${TMP2_FILE}
+    sort "${HC_LOG}" >"${TMP1_FILE}"
+    comm -23 "${TMP1_FILE}" "${ARCHIVE_FILE}" 2>/dev/null >"${TMP2_FILE}"
 
     # check archive action (HC_LOG should not be empty unless it contained
     # only messages from one single HC plugin before archival)
     if [[ -s ${TMP2_FILE} ]] || (( PRE_LOG_COUNT == TODO_LOG_COUNT ))
     then
-        mv ${TMP2_FILE} ${HC_LOG} 2>/dev/null || {
+        mv "${TMP2_FILE}" "${HC_LOG}" 2>/dev/null || {
             warn "failed to move HC log file, aborting"
             return 2
         }
-        LOG_COUNT=$(wc -l ${HC_LOG} 2>/dev/null | cut -f1 -d' ' 2>/dev/null)
+        if (( COUNT_STATS > 0 ))
+        then
+            LOG_COUNT=$(wc -l "${HC_LOG}" 2>/dev/null | cut -f1 -d' ' 2>/dev/null)
             log "# entries in ${HC_LOG} now: ${LOG_COUNT}"
+        fi
         ARCHIVE_RC=1
     else
         warn "a problem occurred. Rolling back archival"
-        mv ${SAVE_HC_LOG} ${HC_LOG} 2>/dev/null
+        mv "${SAVE_HC_LOG}" "${HC_LOG}" 2>/dev/null
         ARCHIVE_RC=2
     fi
 done
 
 # clean up temporary file(s)
-rm -f ${TMP1_FILE} ${TMP2_FILE} ${SAVE_HC_LOG} >/dev/null 2>&1
+rm -f "${TMP1_FILE}" "${TMP2_FILE}" "${SAVE_HC_LOG}" >/dev/null 2>&1
 
 return ${ARCHIVE_RC}
 }
 
+# -----------------------------------------------------------------------------
+# @(#) FUNCTION: archive_hc_all()
+# DOES: archive log entries for all HCs
+# EXPECTS: n/a
+# RETURNS: 0
+# REQUIRES: ${HC_LOG}
+function archive_hc_all
+{
+typeset HC_ARCHIVE=""
+
+# build list with all HCs in $HC_LOG and sort them by highest number of messages
+# first (to speed up the archiving operation)
+log "parsing log file ${HC_LOG} for messages ..."
+awk -F"${LOG_SEP}" '
+    {
+        # only do records with a proper HC name in $2
+        if ($2 ~ /check_/) {
+            count[$2]++;
+        }
+    }
+
+    END {
+        for (hc in count) {
+            print count[hc] ":" hc;
+        }
+    }' "${HC_LOG}" 2>/dev/null | sort -rn 2>/dev/null |\
+while IFS=":" read -r HC_COUNT HC_ARCHIVE
+do
+    # check for HC (function)
+    exists_hc "${HC_ARCHIVE}" && die "cannot find HC: ${HC_ARCHIVE}"
+    log "archiving ${HC_COUNT} log entries for HC ${HC_ARCHIVE}"
+    archive_hc "${HC_ARCHIVE}"
+    ARCHIVE_RC=$?
+    case ${ARCHIVE_RC} in
+        0)
+            log "no archiving needed for ${HC_ARCHIVE}"
+            ;;
+        1)
+            log "successfully archived log entries for ${HC_ARCHIVE}"
+            ;;
+        2)
+            warn "failed to archive log entries for ${HC_ARCHIVE} [RC=${ARCHIVE_RC}]"
+            ;;
+    esac
+done
+
+return 0
+}
+
 # -----------------------------------------------------------------------------
 # @(#) FUNCTION: count_log_errors()
 # DOES: check hc log file(s) for rogue entries (=lines with NF<>$NUM_LOG_FIELDS
@@ -145,7 +211,7 @@ function count_log_errors
 typeset LOG_STASH="${1}"
 typeset ERROR_COUNT=0
 
-# shellcheck disable=SC2002
+# shellcheck disable=SC2002,SC2086
 ERROR_COUNT=$(cat ${LOG_STASH} 2>/dev/null | awk -F"${LOG_SEP}" '
     BEGIN { num = 0 }
     {
@@ -155,7 +221,7 @@ ERROR_COUNT=$(cat ${LOG_STASH} 2>/dev/null | awk -F"${LOG_SEP}" '
     }
     END { print num }' 2>/dev/null)
 
-print ${ERROR_COUNT}
+print "${ERROR_COUNT}"
 
 return 0
 }
@@ -197,7 +263,7 @@ then
         print - "$*" | while read -r LOG_LINE
         do
             # shellcheck disable=SC2153
-            print "${NOW}: ERROR: [$$]:" "${LOG_LINE}" >>${LOG_FILE}
+            print "${NOW}: ERROR: [$$]:" "${LOG_LINE}" >>"${LOG_FILE}"
         done
     fi
     print - "$*" | while read -r LOG_LINE
@@ -241,6 +307,7 @@ DO_DISPLAY_CUSTOM9=0
 DO_NOTIFY_EIF=0
 DO_NOTIFY_MAIL=0
 DO_NOTIFY_SMS=0
+DO_NOTIFY_SLACK=0
 DO_REPORT_STD=0
 HAS_DISPLAY_CSV=0
 HAS_DISPLAY_INIT=0
@@ -259,12 +326,13 @@ HAS_DISPLAY_CUSTOM9=0
 HAS_NOTIFY_EIF=0
 HAS_NOTIFY_MAIL=0
 HAS_NOTIFY_SMS=0
+HAS_NOTIFY_SLACK=0
 HAS_REPORT_STD=0
 
 # check which core display/notification plugins are installed
 # do not use a while-do loop here because mksh/pdksh does not pass updated
 # variables back from the sub shell (only works for true ksh88/ksh93)
-# shellcheck disable=SC2010
+# shellcheck disable=SC2010,SC2086
 for FFILE in $(ls -1 ${FPATH_PARENT}/core/*.sh 2>/dev/null | grep -v "include_" 2>/dev/null)
 do
     case "${FFILE}" in
@@ -336,6 +404,10 @@ do
             HAS_NOTIFY_EIF=1
             (( ARG_DEBUG > 0 )) && debug "notify_eif plugin is available"
             ;;
+        *notify_slack.sh)
+            HAS_NOTIFY_SLACK=1
+            (( ARG_DEBUG > 0 )) && debug "notify_slack plugin is available"
+            ;;
         *report_std.sh)
             # shellcheck disable=SC2034
             HAS_REPORT_STD=1
@@ -493,6 +565,9 @@ then
             *mail*) # by mail
                 DO_NOTIFY_MAIL=1
                 ;;
+            *slack*) # by Slack
+                DO_NOTIFY_SLACK=1
+                ;;
             *sms*) # by sms
                 DO_NOTIFY_SMS=1
                 ;;
@@ -651,8 +726,10 @@ return 0
 function dump_logs
 {
 log "=== STDOUT ==="
+# shellcheck disable=SC2086
 log "$(<${HC_STDOUT_LOG})"
 log "=== STDERR ==="
+# shellcheck disable=SC2086
 log "$(<${HC_STDERR_LOG})"
 
 return 0
@@ -741,25 +818,26 @@ fi
 trap "[[ -f ${TMP_FILE} ]] && rm -f ${TMP_FILE} >/dev/null 2>&1; return 1" 1 2 3 15
 
 # check and rewrite log file(s)
+# shellcheck disable=SC2086
 find ${LOG_STASH} -type f -print 2>/dev/null | while read -r FIX_FILE
 do
     log "fixing log file ${FIX_FILE} ..."
 
     # count before rewrite
-    STASH_COUNT=$(wc -l ${FIX_FILE} 2>/dev/null | cut -f1 -d' ' 2>/dev/null)
+    STASH_COUNT=$(wc -l "${FIX_FILE}" 2>/dev/null | cut -f1 -d' ' 2>/dev/null)
 
     # does it have errors?
-    ERROR_COUNT=$(count_log_errors ${FIX_FILE})
+    ERROR_COUNT=$(count_log_errors "${FIX_FILE}")
 
     # we count the empty lines (again)
-    EMPTY_COUNT=$(grep -c -E -e '^$' ${FIX_FILE} 2>/dev/null)
+    EMPTY_COUNT=$(grep -c -E -e '^$' "${FIX_FILE}" 2>/dev/null)
 
     # rewrite if needed
     if (( ERROR_COUNT > 0 ))
     then
-        : >${TMP_FILE} 2>/dev/null
+        : >"${TMP_FILE}" 2>/dev/null
         # shellcheck disable=SC2002
-        cat ${FIX_FILE} 2>/dev/null | awk -F"${LOG_SEP}" -v OFS="${LOG_SEP}" '
+        cat "${FIX_FILE}" 2>/dev/null | awk -F"${LOG_SEP}" -v OFS="${LOG_SEP}" '
 
             BEGIN { max_log_fields = '"${NUM_LOG_FIELDS}"'
                     max_fields = (max_log_fields - 1) * 2
@@ -835,10 +913,10 @@ do
                     # correct log line, no rewrite needed
                     print $0
                 }
-            }' >${TMP_FILE} 2>/dev/null
+            }' >"${TMP_FILE}" 2>/dev/null
 
         # count after rewrite (include empty lines again in the count)
-        TMP_COUNT=$(wc -l ${TMP_FILE} 2>/dev/null | cut -f1 -d' ' 2>/dev/null)
+        TMP_COUNT=$(wc -l "${TMP_FILE}" 2>/dev/null | cut -f1 -d' ' 2>/dev/null)
         TMP_COUNT=$(( TMP_COUNT + EMPTY_COUNT ))
 
         # bail out when we do not have enough records
@@ -849,16 +927,16 @@ do
         fi
 
         # swap log file (but create a backup first!)
-        cp -p ${FIX_FILE} ${SAVE_TMP_FILE} 2>/dev/null
+        cp -p "${FIX_FILE}" "${SAVE_TMP_FILE}" 2>/dev/null
         # shellcheck disable=SC2181
         if (( $? == 0 ))
         then
-            mv ${TMP_FILE} ${FIX_FILE} 2>/dev/null
+            mv "${TMP_FILE}" "${FIX_FILE}" 2>/dev/null
             # shellcheck disable=SC2181
             if (( $? > 0 ))
             then
                 warn "failed to move/update log file, rolling back"
-                mv ${SAVE_TMP_FILE} ${FIX_FILE} 2>/dev/null
+                mv "${SAVE_TMP_FILE}" "${FIX_FILE}" 2>/dev/null
                 return 2
             fi
             FIX_RC=1
@@ -868,7 +946,7 @@ do
         fi
 
         # clean up temporary file(s)
-        rm -f ${SAVE_TMP_FILE} ${TMP_FILE} >/dev/null 2>&1
+        rm -f "${SAVE_TMP_FILE}" "${TMP_FILE}" >/dev/null 2>&1
     else
         log "no fixing needed for ${FIX_FILE}"
     fi
@@ -879,6 +957,26 @@ done
 return ${FIX_RC}
 }
 
+# -----------------------------------------------------------------------------
+# @(#) FUNCTION: get_disable_comment()
+# DOES: retrieve comment for a disabled HC
+# EXPECTS: HC name [string]
+# OUTPUTS: comment [string]
+# RETURNS: 0
+# REQUIRES: n/a
+function get_disable_comment
+{
+(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set "${DEBUG_OPTS}"
+typeset COMMENT_HC="${1}"
+
+if [[ -s "${STATE_PERM_DIR}/${COMMENT_HC}.disabled" ]]
+then
+    cat "${STATE_PERM_DIR}/${COMMENT_HC}.disabled" 2>/dev/null
+fi
+
+return 0
+}
+
 # -----------------------------------------------------------------------------
 # @(#) FUNCTION: handle_hc()
 # DOES: handle HC results
@@ -913,7 +1011,7 @@ if [[ -s ${HC_MSG_FILE} ]]
 then
     # load messages file into memory
     # do not use array: max 1024 items in ksh88; regular variable is only 32-bit memory limited
-    HC_MSG_VAR=$(<${HC_MSG_FILE})
+    HC_MSG_VAR=$(<"${HC_MSG_FILE}")
 
     # DEBUG: dump TMP file
     if (( ARG_DEBUG > 0 ))
@@ -931,6 +1029,7 @@ else
     # nothing to do, respect current EXIT_CODE
     if (( EXIT_CODE > 0 ))
     then
+        # shellcheck disable=SC2086
         return ${EXIT_CODE}
     else
         return 0
@@ -1152,50 +1251,50 @@ then
         if (( ONE_MSG_STC > 0 ))
         then
             # build log string
-            LOG_STRING_FAIL=$(printf "%s${LOG_SEP}%s${LOG_SEP}%s${LOG_SEP}%s${LOG_SEP}%s${LOG_SEP}" "${ONE_MSG_TIME}" "${HC_NAME}" ${ONE_MSG_STC} "${ONE_MSG_TEXT}" "${HC_FAIL_ID}")
+            LOG_STRING_FAIL=$(printf "%s${LOG_SEP}%s${LOG_SEP}%s${LOG_SEP}%s${LOG_SEP}%s${LOG_SEP}" "${ONE_MSG_TIME}" "${HC_NAME}" "${ONE_MSG_STC}" "${ONE_MSG_TEXT}" "${HC_FAIL_ID}")
 
             # do atomic log update
             # shellcheck disable=SC1117
-            print "${LOG_STRING_FAIL}" >>${HC_LOG}
+            print "${LOG_STRING_FAIL}" >>"${HC_LOG}"
 
             # cache report (--report --last)
             HC_REPORT_CACHE_LAST_FILE="${HC_REPORT_CACHE_LAST_STUB}-${HC_NAME}"
             case "${HC_REPORT_CACHE_LAST}" in
                 Yes|yes|YES)
                     # fetch date of last cache entry (did we rollover from last HC event?)
-                    HC_CACHE_LAST_DATE=$(tail -n 1 ${HC_REPORT_CACHE_LAST_FILE} 2>/dev/null | cut -f1 -d${LOG_SEP} 2>/dev/null)
+                    HC_CACHE_LAST_DATE=$(tail -n 1 "${HC_REPORT_CACHE_LAST_FILE}" 2>/dev/null | cut -f1 -d"${LOG_SEP}" 2>/dev/null)
                     if [[ -z "${HC_CACHE_LAST_DATE}" ]] || [[ "${HC_CACHE_LAST_DATE}" != "${HC_CACHE_LAST_NOW}" ]]
                     then
                         # set and update cache file
-                        print "${LOG_STRING_FAIL}" >${HC_REPORT_CACHE_LAST_FILE}
+                        print "${LOG_STRING_FAIL}" >"${HC_REPORT_CACHE_LAST_FILE}"
                     else
                         # append cache file
-                        print "${LOG_STRING_FAIL}" >>${HC_REPORT_CACHE_LAST_FILE}
+                        print "${LOG_STRING_FAIL}" >>"${HC_REPORT_CACHE_LAST_FILE}"
                     fi
                     ;;
                 *)
                     # remove cache file if it exists
-                    [[ -f ${HC_REPORT_CACHE_LAST_FILE} ]] && rm -f ${HC_REPORT_CACHE_LAST_FILE} >/dev/null 2>/dev/null
+                    [[ -f "${HC_REPORT_CACHE_LAST_FILE}" ]] && rm -f "${HC_REPORT_CACHE_LAST_FILE}" >/dev/null 2>/dev/null
                     ;;
             esac
             # cache report (--report --today)
             case "${HC_REPORT_CACHE_TODAY}" in
                 Yes|yes|YES)
                     # fetch date of last cache entry (did we rollover midnight?)
-                    HC_CACHE_TODAY_DATE=$(tail -n 1 ${HC_REPORT_CACHE_TODAY_FILE} 2>/dev/null | cut -f1 -d${LOG_SEP} 2>/dev/null | awk '{ print $1 }' 2>/dev/null)
+                    HC_CACHE_TODAY_DATE=$(tail -n 1 "${HC_REPORT_CACHE_TODAY_FILE}" 2>/dev/null | cut -f1 -d"${LOG_SEP}" 2>/dev/null | awk '{ print $1 }' 2>/dev/null)
                     if [[ -z "${HC_CACHE_TODAY_DATE}" ]] || [[ "${HC_CACHE_TODAY_DATE}" != "${HC_CACHE_TODAY_NOW}" ]]
                     then
                         # rotate and update cache file
                         (( ARG_DEBUG > 0 )) && debug "rotating today's cache file at ${HC_REPORT_CACHE_TODAY_FILE}"
-                        print "${LOG_STRING_FAIL}" >${HC_REPORT_CACHE_TODAY_FILE}
+                        print "${LOG_STRING_FAIL}" >"${HC_REPORT_CACHE_TODAY_FILE}"
                     else
                         # append cache file
-                        print "${LOG_STRING_FAIL}" >>${HC_REPORT_CACHE_TODAY_FILE}
+                        print "${LOG_STRING_FAIL}" >>"${HC_REPORT_CACHE_TODAY_FILE}"
                     fi
                     ;;
                 *)
                     # remove cache file if it exists
-                    [[ -f ${HC_REPORT_CACHE_TODAY_FILE} ]] && rm -f ${HC_REPORT_CACHE_TODAY_FILE} >/dev/null 2>/dev/null
+                    [[ -f "${HC_REPORT_CACHE_TODAY_FILE}" ]] && rm -f "${HC_REPORT_CACHE_TODAY_FILE}" >/dev/null 2>/dev/null
                     ;;
             esac
             # RC handling (max/sum/count)
@@ -1218,50 +1317,50 @@ then
             fi
         else
             # build log string
-            LOG_STRING_GOOD=$(printf "%s${LOG_SEP}%s${LOG_SEP}%s${LOG_SEP}%s${LOG_SEP}" "${ONE_MSG_TIME}" "${HC_NAME}" ${ONE_MSG_STC} "${ONE_MSG_TEXT}")
+            LOG_STRING_GOOD=$(printf "%s${LOG_SEP}%s${LOG_SEP}%s${LOG_SEP}%s${LOG_SEP}" "${ONE_MSG_TIME}" "${HC_NAME}" "${ONE_MSG_STC}" "${ONE_MSG_TEXT}")
 
             # do atomic log update
             # shellcheck disable=SC1117
-            print "${LOG_STRING_GOOD}" >>${HC_LOG}
+            print "${LOG_STRING_GOOD}" >>"${HC_LOG}"
 
             # cache report (--report --last)
             HC_REPORT_CACHE_LAST_FILE="${HC_REPORT_CACHE_LAST_STUB}-${HC_NAME}"
             case "${HC_REPORT_CACHE_LAST}" in
                 Yes|yes|YES)
                     # fetch date of last cache entry (did we rollover from last HC event?)
-                    HC_CACHE_LAST_DATE=$(tail -n 1 ${HC_REPORT_CACHE_LAST_FILE} 2>/dev/null | cut -f1 -d${LOG_SEP} 2>/dev/null)
+                    HC_CACHE_LAST_DATE=$(tail -n 1 "${HC_REPORT_CACHE_LAST_FILE}" 2>/dev/null | cut -f1 -d"${LOG_SEP}" 2>/dev/null)
                     if [[ -z "${HC_CACHE_LAST_DATE}" ]] || [[ "${HC_CACHE_LAST_DATE}" != "${HC_CACHE_LAST_NOW}" ]]
                     then
                         # set and update cache file
-                        print "${LOG_STRING_GOOD}" >${HC_REPORT_CACHE_LAST_FILE}
+                        print "${LOG_STRING_GOOD}" >"${HC_REPORT_CACHE_LAST_FILE}"
                     else
                         # append cache file
-                        print "${LOG_STRING_GOOD}" >>${HC_REPORT_CACHE_LAST_FILE}
+                        print "${LOG_STRING_GOOD}" >>"${HC_REPORT_CACHE_LAST_FILE}"
                     fi
                     ;;
                 *)
                     # remove cache file if it exists
-                    [[ -f ${HC_REPORT_CACHE_LAST_FILE} ]] && rm -f ${HC_REPORT_CACHE_LAST_FILE} >/dev/null 2>/dev/null
+                    [[ -f "${HC_REPORT_CACHE_LAST_FILE}" ]] && rm -f "${HC_REPORT_CACHE_LAST_FILE}" >/dev/null 2>/dev/null
                     ;;
             esac
             # cache report (--report --today)
             case "${HC_REPORT_CACHE_TODAY}" in
                 Yes|yes|YES)
                     # fetch date of last cache last_entry (did we rollover midnight?)
-                    HC_CACHE_TODAY_DATE=$(tail -n 1 ${HC_REPORT_CACHE_TODAY_FILE} 2>/dev/null | cut -f1 -d${LOG_SEP} 2>/dev/null | awk '{ print $1 }' 2>/dev/null)
+                    HC_CACHE_TODAY_DATE=$(tail -n 1 "${HC_REPORT_CACHE_TODAY_FILE}" 2>/dev/null | cut -f1 -d"${LOG_SEP}" 2>/dev/null | awk '{ print $1 }' 2>/dev/null)
                     if [[ -z "${HC_CACHE_TODAY_DATE}" ]] || [[ "${HC_CACHE_TODAY_DATE}" != "${HC_CACHE_TODAY_NOW}" ]]
                     then
                         # rotate and update cache file
                         (( ARG_DEBUG > 0 )) && debug "rotating today's cache file at ${HC_REPORT_CACHE_TODAY_FILE}"
-                        print "${LOG_STRING_GOOD}" >${HC_REPORT_CACHE_TODAY_FILE}
+                        print "${LOG_STRING_GOOD}" >"${HC_REPORT_CACHE_TODAY_FILE}"
                     else
                         # append cache file
-                        print "${LOG_STRING_GOOD}" >>${HC_REPORT_CACHE_TODAY_FILE}
+                        print "${LOG_STRING_GOOD}" >>"${HC_REPORT_CACHE_TODAY_FILE}"
                     fi
                     ;;
                 *)
                     # remove cache file if it exists
-                    [[ -f ${HC_REPORT_CACHE_TODAY_FILE} ]] && rm -f ${HC_REPORT_CACHE_TODAY_FILE} >/dev/null 2>/dev/null
+                    [[ -f ${HC_REPORT_CACHE_TODAY_FILE} ]] && rm -f "${HC_REPORT_CACHE_TODAY_FILE}" >/dev/null 2>/dev/null
                     ;;
             esac
         fi
@@ -1280,14 +1379,14 @@ then
             then
                 # cut off the path and the .$$ part from the file location
                 HC_STDOUT_LOG_SHORT="${HC_STDOUT_LOG##*/}"
-                mv ${HC_STDOUT_LOG} "${EVENTS_DIR}/${DIR_PREFIX}/${HC_FAIL_ID}/${HC_STDOUT_LOG_SHORT%.*}" >/dev/null 2>&1 || \
+                mv "${HC_STDOUT_LOG}" "${EVENTS_DIR}/${DIR_PREFIX}/${HC_FAIL_ID}/${HC_STDOUT_LOG_SHORT%.*}" >/dev/null 2>&1 || \
                 die "failed to move ${HC_STDOUT_LOG} to event directory at ${1}"
             fi
             if [[ -f ${HC_STDERR_LOG} ]]
             then
                 # cut off the path and the .$$ part from the file location
                 HC_STDERR_LOG_SHORT="${HC_STDERR_LOG##*/}"
-                mv ${HC_STDERR_LOG} "${EVENTS_DIR}/${DIR_PREFIX}/${HC_FAIL_ID}/${HC_STDERR_LOG_SHORT%.*}" >/dev/null 2>&1 || \
+                mv "${HC_STDERR_LOG}" "${EVENTS_DIR}/${DIR_PREFIX}/${HC_FAIL_ID}/${HC_STDERR_LOG_SHORT%.*}" >/dev/null 2>&1 || \
                 die "failed to move ${HC_STDERR_LOG} to event directory at ${1}"
             fi
         fi
@@ -1326,6 +1425,17 @@ then
                 warn "notify_sms plugin is not avaible, cannot send alert via sms!"
             fi
         fi
+        # by Slack?
+        if (( DO_NOTIFY_SLACK == 1 ))
+        then
+            if (( HAS_NOTIFY_SLACK == 1 ))
+            then
+                # call plugin
+                notify_slack "${HC_NAME}" "${HC_FAIL_ID}"
+            else
+                warn "notify_slack plugin is not avaible, cannot send alert via Slack!"
+            fi
+        fi
     fi
 fi
 
@@ -1350,6 +1460,7 @@ fi
 function handle_timeout
 {
 (( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set "${DEBUG_OPTS}"
+# shellcheck disable=SC2086
 [[ -n "${CHILD_PID}" ]] && kill -s TERM ${CHILD_PID}
 warn "child process with PID ${CHILD_PID} has been forcefully stopped"
 # shellcheck disable=SC2034
@@ -1479,7 +1590,7 @@ esac
 
 # mangle $ARG_HC to build the full list of HCs to be executed
 ARG_HC=""
-grep -i '^hc:' ${HOST_CONFIG_FILE} 2>/dev/null |\
+grep -i '^hc:' "${HOST_CONFIG_FILE}" 2>/dev/null |\
     while IFS=':' read -r _ HC_EXEC _ _
 do
     ARG_HC="${ARG_HC},${HC_EXEC}"
@@ -1541,13 +1652,13 @@ case "${OS_NAME}" in
         # check system crontabs
         if (( CRON_COUNT == 0 ))
         then
-            # shellcheck disable=SC2002
+            # shellcheck disable=SC2002,SC2086
             CRON_COUNT=$(cat ${CRON_SYS_LOCATIONS} 2>/dev/null | grep -c -E -e "^[^#].*${CRON_HC}" 2>/dev/null)
         fi
         # check anacron
         if (( CRON_COUNT == 0 ))
         then
-            # shellcheck disable=SC2002
+            # shellcheck disable=SC2002,SC2086
             CRON_COUNT=$(cat ${CRON_ANACRON_LOCATIONS} 2>/dev/null | grep -c -E -e "^[^#].*${CRON_HC}" 2>/dev/null)
         fi
         ;;
@@ -1557,6 +1668,7 @@ case "${OS_NAME}" in
         ;;
 esac
 
+# shellcheck disable=SC2086
 return ${CRON_COUNT}
 }
 
@@ -1588,11 +1700,11 @@ printf "%80s\n" | tr ' ' -
 print "${FPATH}" | tr ':' '\n' 2>/dev/null | grep "core$" | sort 2>/dev/null | while read -r FDIR
 do
     # exclude core helper librar(y|ies)
-    # shellcheck disable=SC2010
+    # shellcheck disable=SC2010,SC2086
     ls -1 ${FDIR}/*.sh 2>/dev/null | grep -v "include_" | sort 2>/dev/null | while read -r FFILE
     do
         # cache script contents in memory
-        FSCRIPT=$(<${FFILE})
+        FSCRIPT="$(<${FFILE})"
 
         # reset state
         FSTATE="enabled"
@@ -1634,12 +1746,12 @@ print -n "Dead links: "
 print "${FPATH}" | tr ':' '\n' 2>/dev/null | grep "core$" 2>/dev/null | while read -r FDIR
 do
     # do not use 'find -type l' here!
-    # shellcheck disable=SC2010,SC1117
+    # shellcheck disable=SC2010,SC1117,SC2086
     ls ${FDIR} 2>/dev/null | grep -v "\." 2>/dev/null | while read -r FFILE
     do
         if [[ -h "${FDIR}/${FFILE}" ]] && [[ ! -f "${FDIR}/${FFILE}" ]]
         then
-            printf "%s " ${FFILE##*/}
+            printf "%s " "${FFILE##*/}"
         fi
     done
 done
@@ -1705,11 +1817,11 @@ fi
 print "${FPATH}" | tr ':' '\n' 2>/dev/null | grep -v "core$" 2>/dev/null | sort 2>/dev/null |\
     while read -r FDIR
 do
-    # shellcheck disable=SC2012
+    # shellcheck disable=SC2012,SC2086
     ls -1 ${FDIR}/${FNEEDLE} 2>/dev/null | sort 2>/dev/null | while read -r FFILE
     do
         # cache script contents in memory
-        FSCRIPT=$(<${FFILE})
+        FSCRIPT="$(<${FFILE})"
 
         # --list (basic)
         # find function name but skip helper functions in the plug-in file (function _name)
@@ -1836,12 +1948,12 @@ then
     print "${FPATH}" | tr ':' '\n' 2>/dev/null | grep -v "core" 2>/dev/null | while read -r FDIR
     do
         # do not use 'find -type l' here!
-        # shellcheck disable=SC2010,SC1117
+        # shellcheck disable=SC2010,SC1117,SC2086
         ls ${FDIR} 2>/dev/null | grep -v "\." 2>/dev/null | while read -r FFILE
         do
             if [[ -h "${FDIR}/${FFILE}" ]] && [[ ! -f "${FDIR}/${FFILE}" ]]
             then
-                printf "%s " ${FFILE##*/}
+                printf "%s " "${FFILE##*/}"
             fi
         done
     done
@@ -1899,11 +2011,11 @@ printf "%100s\n" | tr ' ' -
 print "${FPATH}" | tr ':' '\n' 2>/dev/null  | grep "core$" 2>/dev/null | sort 2>/dev/null | while read -r FDIR
 do
     # exclude core helper librar(y|ies)
-    # shellcheck disable=SC2010
+    # shellcheck disable=SC2010,SC2086
     ls -1 ${FDIR}/*.sh 2>/dev/null | grep "include_" 2>/dev/null | sort 2>/dev/null | while read -r FFILE
     do
         # cache script contents in memory
-        FSCRIPT=$(<${FFILE})
+        FSCRIPT="$(<${FFILE})"
 
         # find function name
         FNAME=$(print -R "${FSCRIPT}" | grep -E -e "^function[[:space:]].*version_" 2>/dev/null)
@@ -1936,12 +2048,12 @@ print -n "Dead links: "
 print "${FPATH}" | tr ':' '\n' 2>/dev/null | grep "core$" 2>/dev/null | while read -r FDIR
 do
     # do not use 'find -type l' here!
-    # shellcheck disable=SC2010,SC1117
+    # shellcheck disable=SC2010,SC1117,SC2086
     ls ${FDIR} 2>/dev/null | grep -v "\." 2>/dev/null | while read -r FFILE
     do
         if [[ -h "${FDIR}/${FFILE}" ]] && [[ ! -f "${FDIR}/${FFILE}" ]]
         then
-            printf "%s " ${FFILE##*/}
+            printf "%s " "${FFILE##*/}"
         fi
     done
 done
@@ -1972,7 +2084,7 @@ then
     then
         print - "$*" | while read -r LOG_LINE
         do
-            print "${NOW}: INFO: [$$]:" "${LOG_LINE}" >>${LOG_FILE}
+            print "${NOW}: INFO: [$$]:" "${LOG_LINE}" >>"${LOG_FILE}"
         done
     fi
     if (( ARG_VERBOSE > 0 ))
@@ -2041,7 +2153,7 @@ fi
 
 # save the HC failure message for now
 print "${HC_STC}${MSG_SEP}${HC_NOW}${MSG_SEP}${HC_MSG_TEXT}${MSG_SEP}${HC_MSG_CUR_VAL}${MSG_SEP}${HC_MSG_EXP_VAL}" \
-    >>${HC_MSG_FILE}
+    >>"${HC_MSG_FILE}"
 
 return 0
 }
@@ -2096,13 +2208,14 @@ awk -F"${LOG_SEP}" '{
                         }
                     }
                 }
-                ' ${HC_LOG} 2>/dev/null
+                ' "${HC_LOG}" 2>/dev/null
 
 # archived events
 print; print
 print -R "--- ARCHIVED events --"
 print
-find ${ARCHIVE_DIR} -type f -name "hc.*.log" 2>/dev/null | while read -r _ARCHIVE_FILE
+# shellcheck disable=SC2086
+find ${ARCHIVE_DIR} -type f -name "hc.*.log" 2>/dev/null | sort -rn 2>/dev/null | while read -r _ARCHIVE_FILE
 do
     print "${_ARCHIVE_FILE}:"
     awk -F"${LOG_SEP}" '{
@@ -2138,7 +2251,7 @@ do
                             }
                         }
                     }
-                    ' ${_ARCHIVE_FILE} 2>/dev/null
+                    ' "${_ARCHIVE_FILE}" 2>/dev/null
 done
 
 return 0
@@ -2179,7 +2292,7 @@ then
     then
         print - "$*" | while read -r LOG_LINE
         do
-            print "${NOW}: WARN: [$$]:" "${LOG_LINE}" >>${LOG_FILE}
+            print "${NOW}: WARN: [$$]:" "${LOG_LINE}" >>"${LOG_FILE}"
         done
     fi
     if (( ARG_VERBOSE > 0 ))

opt/hc/lib/core/include_data.sh

@@ -30,7 +30,7 @@
 # RETURNS: 0
 function version_include_data
 {
-typeset _VERSION="2020-03-06"                               # YYYY-MM-DD
+typeset _VERSION="2020-12-27"                               # YYYY-MM-DD
 
 print "INFO: $0: ${_VERSION#version_*}"
 
@@ -51,7 +51,7 @@ typeset _PARAMETER="${1}"
 typeset _LVALUE=""
 typeset _RC=0
 
-_LVALUE=$(grep -i "^${_PARAMETER} *=" ${_CONFIG_FILE} | cut -f2- -d'=')
+_LVALUE=$(grep -i "^${_PARAMETER} *=" "${_CONFIG_FILE}" | cut -f2- -d'=')
 
 if [[ -n "${_LVALUE}" ]]
 then
@@ -637,7 +637,7 @@ case "${1}" in
             return 1
         fi
         # check if X < Y
-        if $(print "${1}" | awk -F '-' '{ if ($1 < $2) { exit 1 }}' 2>/dev/null)
+        if print "${1}" | awk -F '-' '{ if ($1 < $2) { exit 1 }}' 2>/dev/null
         then
             (( ARG_DEBUG > 0 )) && debug "in range $1 operator Y is smaller or equal to operator Y"
             return 1
@@ -937,6 +937,7 @@ print ${_EPOCH}
 # REQUIRES: n/a
 function data_epoch2date
 {
+(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set "${DEBUG_OPTS}"
 typeset _UNIX_EPOCH="${1}"
 typeset _CONVERT_DATE=""
 
@@ -962,6 +963,154 @@ fi
 return 0
 }
 
+# -----------------------------------------------------------------------------
+# @(#) FUNCTION: data_timestring_to_days()
+# DOES: converts a specific timestring to days (rounded to integer)
+# EXPECTS: time definition with a single s|m|h|d suffix [string]
+# OUTPUTS: time value in hours [string]
+# RETURNS: 0=conversion OK; 1=conversion failed
+# REQUIRES: n/a
+function data_timestring_to_days
+{
+(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set "${DEBUG_OPTS}"
+typeset _DAYS=""
+
+case "${1}" in
+    *s|*s)
+        _DAYS=$(( $(print "${1%*[sS]}") / 60 / 60 / 24 ))
+        ;;
+    *m|*M)
+        _DAYS=$(( $(print "${1%*[mM]}") / 60 / 24 ))
+        ;;
+    *h|*H)
+        _DAYS=$(( $(print "${1%*[hH]}") / 24 ))
+        ;;
+    *d|*D)
+        _DAYS=$(print "${1%*[dD]}")
+        ;;
+    *)
+        # invalid suffix specified
+        (( ARG_DEBUG > 0 )) && debug "invalid time suffix specified (only s[econds]|m[inutes]|h[ours]|d[days] allowed)"
+        return 1
+        ;;
+esac
+
+print "${_DAYS}"
+
+return 0
+}
+
+# -----------------------------------------------------------------------------
+# @(#) FUNCTION: data_timestring_to_hours()
+# DOES: converts a specific timestring to hours (rounded to integer)
+# EXPECTS: time definition with a single s|m|h|d suffix [string]
+# OUTPUTS: time value in hours [string]
+# RETURNS: 0=conversion OK; 1=conversion failed
+# REQUIRES: n/a
+function data_timestring_to_hours
+{
+(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set "${DEBUG_OPTS}"
+typeset _HOURS=""
+
+case "${1}" in
+    *s|*s)
+        _HOURS=$(( $(print "${1%*[sS]}") / 60 / 24 ))
+        ;;
+    *m|*M)
+        _HOURS=$(( $(print "${1%*[mM]}") / 60 ))
+        ;;
+    *h|*H)
+        _HOURS=$(print "${1%*[hH]}")
+        ;;
+    *d|*D)
+        _HOURS=$(( $(print "${1%*[dD]}") * 24 ))
+        ;;
+    *)
+        # invalid suffix specified
+        (( ARG_DEBUG > 0 )) && debug "invalid time suffix specified (only s[econds]|m[inutes]|h[ours]|d[days] allowed)"
+        return 1
+        ;;
+esac
+
+print "${_HOURS}"
+
+return 0
+}
+
+# -----------------------------------------------------------------------------
+# @(#) FUNCTION: data_timestring_to_mins()
+# DOES: converts a specific timestring to minutes (rounded to integer)
+# EXPECTS: time definition with a single s|m|h|d suffix [string]
+# OUTPUTS: time value in minutes [string]
+# RETURNS: 0=conversion OK; 1=conversion failed
+# REQUIRES: n/a
+function data_timestring_to_mins
+{
+(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set "${DEBUG_OPTS}"
+typeset _MINUTES=""
+
+case "${1}" in
+    *s|*s)
+        _MINUTES=$(( $(print "${1%*[sS]}") / 60 ))
+        ;;
+    *m|*M)
+        _MINUTES=$(print "${1%*[mM]}")
+        ;;
+    *h|*H)
+        _MINUTES=$(( $(print "${1%*[hH]}") * 60 ))
+        ;;
+    *d|*D)
+        _MINUTES=$(( $(print "${1%*[dD]}") * 60 * 24 ))
+        ;;
+    *)
+        # invalid suffix specified
+        (( ARG_DEBUG > 0 )) && debug "invalid time suffix specified (only s[econds]|m[inutes]|h[ours]|d[days] allowed)"
+        return 1
+        ;;
+esac
+
+print "${_MINUTES}"
+
+return 0
+}
+
+# -----------------------------------------------------------------------------
+# @(#) FUNCTION: data_timestring_to_secs()
+# DOES: converts a specific timestring to seconds (rounded to integer)
+# EXPECTS: time definition with a single m|h|d suffix [string]
+# OUTPUTS: time value in seconds [string]
+# RETURNS: 0=conversion OK; 1=conversion failed
+# REQUIRES: n/a
+function data_timestring_to_secs
+{
+(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set "${DEBUG_OPTS}"
+typeset _SECONDS=""
+
+case "${1}" in
+    *s|*s)
+        _SECONDS=$(print "${1%*[sS]}")
+        ;;
+    *m|*M)
+        _SECONDS=$(( $(print "${1%*[Mm]}") * 60 ))
+        ;;
+    *h|*H)
+        _SECONDS=$(( $(print "${1%*[hH]}") * 60 * 60 ))
+        ;;
+    *d|*D)
+        _SECONDS=$(( $(print "${1%*[dD]}") * 60 * 60 * 24 ))
+        ;;
+    *)
+        # invalid suffix specified
+        (( ARG_DEBUG > 0 )) && debug "invalid time suffix specified (only s[econds]|m[inutes]|h[ours]|d[days] allowed)"
+        return 1
+        ;;
+esac
+
+print "${_SECONDS}"
+
+return 0
+}
+
 #******************************************************************************
 # END of script
 #******************************************************************************

opt/hc/lib/core/notify_mail.sh

@@ -30,7 +30,7 @@
 function notify_mail
 {
 # ------------------------- CONFIGURATION starts here -------------------------
-typeset _VERSION="2019-04-20"                               # YYYY-MM-DD
+typeset _VERSION="2022-02-16"                               # YYYY-MM-DD
 typeset _SUPPORTED_PLATFORMS="AIX,HP-UX,Linux"              # uname -s match
 # ------------------------- CONFIGURATION ends here ---------------------------
 
@@ -58,6 +58,7 @@ typeset _MAIL_ATTACH_BIT=""
 typeset _MAIL_METHOD=""
 typeset _MAIL_RC=0
 typeset _MAILX_BIN=""
+typeset _MAILX_ATTACH_SWITCH=""
 typeset _MUTT_BIN=""
 typeset _SENDMAIL_BIN=""
 typeset _UUENCODE_BIN=""
@@ -90,6 +91,17 @@ case "${OS_NAME}" in
             if [[ -x ${_MAILX_BIN} ]] && [[ -n "${_MAILX_BIN}" ]]
             then
                 _MAIL_METHOD="mailx"
+                # check which switch we need for attaching a file:
+                # Debian/Ubuntu: -A file
+                # Redhat (Heirloom version): -a file
+                ${_MAILX_BIN} -h 2>&1 | grep -q -e "-a FILE" >/dev/null 2>/dev/null
+                # shellcheck disable=SC2181
+                if (( $? == 0 ))
+                then
+                    _MAILX_ATTACH_SWITCH="-a "
+                else
+                    _MAILX_ATTACH_SWITCH="-A "
+                fi
             else
                 _MAIL_METHOD="sendmail"
             fi
@@ -122,18 +134,18 @@ then
     [[ -r "${_MAIL_INFO_TPL}" ]] || die "cannot read mail info template at ${_MAIL_INFO_TPL}"
     eval "cat << __EOT
 $(sed 's/[\$`]/\\&/g;s/<## @\([^ ]*\) ##>/${\1}/g' <${_MAIL_INFO_TPL})
-__EOT" >${_TMP1_MAIL_FILE}
+__EOT" >"${_TMP1_MAIL_FILE}"
 fi
 
 # create header part
 [[ -r "${_MAIL_HEADER_TPL}" ]] || die "cannot read mail header template at ${_MAIL_HEADER_TPL}"
 eval "cat << __EOT
 $(sed 's/[\$`]/\\&/g;s/<## @\([^ ]*\) ##>/${\1}/g' <${_MAIL_HEADER_TPL})
-__EOT" >>${_TMP1_MAIL_FILE}
-print "" >>${_TMP1_MAIL_FILE}
+__EOT" >>"${_TMP1_MAIL_FILE}"
+print "" >>"${_TMP1_MAIL_FILE}"
 
 # create body part (from $HC_MSG_VAR)
-print "${HC_MSG_VAR}" | while IFS=${MSG_SEP} read _MAIL_MSG_STC _ _MAIL_MSG_TEXT _MAIL_MSG_CUR_VAL _MAIL_MSG_EXP_VAL
+print "${HC_MSG_VAR}" | while IFS=${MSG_SEP} read -r _MAIL_MSG_STC _ _MAIL_MSG_TEXT _MAIL_MSG_CUR_VAL _MAIL_MSG_EXP_VAL
 do
     # magically unquote if needed
     if [[ -n "${_MAIL_MSG_TEXT}" ]]
@@ -175,8 +187,8 @@ done
 [[ -r "${_MAIL_BODY_TPL}" ]] || die "cannot read mail body template at ${_MAIL_BODY_TPL}"
 eval "cat << __EOT
 $(sed 's/[\$`]/\\&/g;s/<## @\([^ ]*\) ##>/${\1}/g' <${_MAIL_BODY_TPL})
-__EOT" >>${_TMP1_MAIL_FILE}
-print "" >>${_TMP1_MAIL_FILE}
+__EOT" >>"${_TMP1_MAIL_FILE}"
+print "" >>"${_TMP1_MAIL_FILE}"
 
 # HC STDOUT log? (drop the .$$ bit)
 _MAIL_STDOUT_LOG="${EVENTS_DIR}/${DIR_PREFIX}/${_MAIL_FAIL_ID}/${_HC_STDOUT_LOG_SHORT%.*}"
@@ -184,7 +196,14 @@ if [[ -s "${_MAIL_STDOUT_LOG}" ]]
 then
     # shellcheck disable=SC2034
     _MAIL_STDOUT_MSG="${_MAIL_STDOUT_LOG}"
+    case "${_MAIL_METHOD}" in
+        "mailx")
+            _MAIL_ATTACH_BIT="${_MAILX_ATTACH_SWITCH} ${_MAIL_STDOUT_LOG}"
+            ;;
+        *)
             _MAIL_ATTACH_BIT="-a ${_MAIL_STDOUT_LOG}"
+            ;;
+    esac
 else
     # shellcheck disable=SC2034
     _MAIL_STDOUT_MSG="no log file available"
@@ -195,7 +214,14 @@ if [[ -s "${_MAIL_STDERR_LOG}" ]]
 then
     # shellcheck disable=SC2034
     _MAIL_STDERR_MSG="${_MAIL_STDERR_LOG}"
+    case "${_MAIL_METHOD}" in
+        "mailx")
+            _MAIL_ATTACH_BIT="${_MAIL_ATTACH_BIT} ${_MAILX_ATTACH_SWITCH} ${_MAIL_STDERR_LOG}"
+            ;;
+        *)
             _MAIL_ATTACH_BIT="${_MAIL_ATTACH_BIT} -a ${_MAIL_STDERR_LOG}"
+            ;;
+    esac
 else
      # shellcheck disable=SC2034
     _MAIL_STDERR_MSG="no log file available"
@@ -205,28 +231,29 @@ fi
 [[ -r ${_MAIL_FOOTER_TPL} ]] || die "cannot read mail body template at ${_MAIL_FOOTER_TPL}"
 eval "cat << __EOT
 $(sed 's/[\$`]/\\&/g;s/<## @\([^ ]*\) ##>/${\1}/g' <${_MAIL_FOOTER_TPL})
-__EOT" >>${_TMP1_MAIL_FILE}
+__EOT" >>"${_TMP1_MAIL_FILE}"
 
 # combine and send message components
 case "${_MAIL_METHOD}" in
     "mailx")
         # remove non-ASCII characters to avoid Exchange ATT00001.bin
-        cat ${_TMP1_MAIL_FILE} | tr -cd '[:print:]\n' 2>/dev/null |\
+        # shellcheck disable=SC2086
+        tr -cd '[:print:]\n' < "${_TMP1_MAIL_FILE}" 2>/dev/null |\
             ${_MAILX_BIN} ${_MAIL_ATTACH_BIT} -s "${_SUBJ_MSG}" "${ARG_MAIL_TO}"
         _MAIL_RC=$?
         ;;
     "mutt")
         # attach bit goes at the end
-        cat ${_TMP1_MAIL_FILE} 2>/dev/null |\
-            ${_MUTT_BIN} -s "${_SUBJ_MSG}" "${ARG_MAIL_TO}" ${_MAIL_ATTACH_BIT}
+        # shellcheck disable=SC2086
+        ${_MUTT_BIN} -s "${_SUBJ_MSG}" "${ARG_MAIL_TO}" ${_MAIL_ATTACH_BIT} <"${_TMP1_MAIL_FILE}"
         _MAIL_RC=$?
         ;;
     "sendmail")
         [[ -s "${_MAIL_STDOUT_LOG}" ]] && \
-            uuencode ${_MAIL_STDOUT_LOG} stdout.log >>${_TMP2_MAIL_FILE} 2>/dev/null
+            uuencode "${_MAIL_STDOUT_LOG}" stdout.log >>"${_TMP2_MAIL_FILE}" 2>/dev/null
         [[ -s "${_MAIL_STDERR_LOG}" ]] && \
-            uuencode ${_MAIL_STDERR_LOG} stderr.log >>${_TMP2_MAIL_FILE} 2>/dev/null
-        cat ${_TMP1_MAIL_FILE} ${_TMP2_MAIL_FILE} 2>/dev/null | ${_SENDMAIL_BIN} -t
+            uuencode "${_MAIL_STDERR_LOG}" stderr.log >>"${_TMP2_MAIL_FILE}" 2>/dev/null
+        cat "${_TMP1_MAIL_FILE}" "${_TMP2_MAIL_FILE}" 2>/dev/null | ${_SENDMAIL_BIN} -t
         _MAIL_RC=$?
         ;;
     *)
@@ -242,8 +269,8 @@ else
 fi
 
 # clean up temporary files
-[[ -f ${_TMP1_MAIL_FILE} ]] && rm -f ${_TMP1_MAIL_FILE} >/dev/null 2>&1
-[[ -f ${_TMP2_MAIL_FILE} ]] && rm -f ${_TMP2_MAIL_FILE} >/dev/null 2>&1
+[[ -f ${_TMP1_MAIL_FILE} ]] && rm -f "${_TMP1_MAIL_FILE}" >/dev/null 2>&1
+[[ -f ${_TMP2_MAIL_FILE} ]] && rm -f "${_TMP2_MAIL_FILE}" >/dev/null 2>&1
 
 return 0
 }

opt/hc/lib/core/notify_slack.sh

@@ -0,0 +1,135 @@
+#!/usr/bin/env ksh
+#******************************************************************************
+# @(#) notify_slack.sh
+#******************************************************************************
+# @(#) Copyright (C) 2022 by KUDOS BVBA (info@kudos.be).  All rights reserved.
+#
+# This program is a free software; you can redistribute it and/or modify
+# it under the same terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details
+#******************************************************************************
+#
+# DOCUMENTATION (MAIN)
+# -----------------------------------------------------------------------------
+# @(#) MAIN: notify_slack
+# DOES: send message to slack app
+# EXPECTS: 1=HC name [string], 2=HC FAIL_ID [string]
+# RETURNS: 0
+# REQUIRES: data_contains_string(), data_get_lvalue_from_config(), data_magic_unquote(),
+#           init_hc(), log(), warn(), curl
+#
+# -----------------------------------------------------------------------------
+# DO NOT CHANGE THIS FILE UNLESS YOU KNOW WHAT YOU ARE DOING!
+#******************************************************************************
+
+# -----------------------------------------------------------------------------
+function notify_slack
+{
+# ------------------------- CONFIGURATION starts here -------------------------
+typeset _CONFIG_FILE="${CONFIG_DIR}/core/providers/$0.conf"
+typeset _VERSION="2022-10-14"                               # YYYY-MM-DD
+typeset _SUPPORTED_PLATFORMS="AIX,HP-UX,Linux"              # uname -s match
+# ------------------------- CONFIGURATION ends here ---------------------------
+
+# set defaults
+(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set "${DEBUG_OPTS}"
+init_hc "$0" "${_SUPPORTED_PLATFORMS}" "${_VERSION}"
+
+typeset _SLACK_HC="$1"
+typeset _SLACK_FAIL_ID="$2"
+
+typeset _SLACK_TEXT=""
+typeset _SLACK_MSG_STC=""
+typeset _SLACK_MSG_TEXT=""
+typeset _SLACK_MSG_CUR_VAL=""
+typeset _SLACK_MSG_EXP_VAL=""
+typeset _CURL_BIN=""
+typeset _SLACK_WEBHOOK=""
+
+# handle config file
+if [[ ! -r ${_CONFIG_FILE} ]]
+then
+    warn "unable to read configuration file at ${_CONFIG_FILE}"
+    return 1
+fi
+# read required config values
+_SLACK_WEBHOOK=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'SLACK_WEBHOOK')
+if [[ -z "${_SLACK_WEBHOOK}" ]]
+then
+    warn "no value set for 'SLACK_WEBHOOK' in ${_CONFIG_FILE}"
+    return 1
+fi
+
+# create header part
+_SLACK_TEXT="${EXEC_USER}@${HOST_NAME}: HC ${_SLACK_HC} failed, FAIL_ID=${_SLACK_FAIL_ID}"
+
+# create body part (from $HC_MSG_VAR)
+print "${HC_MSG_VAR}" | while IFS=${MSG_SEP} read -r _SLACK_MSG_STC _ _SLACK_MSG_TEXT _SLACK_MSG_CUR_VAL _SLACK_MSG_EXP_VAL
+do
+    # magically unquote if needed
+    if [[ -n "${_SLACK_MSG_TEXT}" ]]
+    then
+        data_contains_string "${_SLACK_MSG_TEXT}" "${MAGIC_QUOTE}"
+        # shellcheck disable=SC2181
+        if (( $? > 0 ))
+        then
+            _SLACK_MSG_TEXT=$(data_magic_unquote "${_SLACK_MSG_TEXT}")
+        fi
+    fi
+    if [[ -n "${_SLACK_MSG_CUR_VAL}" ]]
+    then
+        data_contains_string "${_SLACK_MSG_CUR_VAL}" "${MAGIC_QUOTE}"
+        # shellcheck disable=SC2181
+        if (( $? > 0 ))
+        then
+            _SLACK_MSG_CUR_VAL=$(data_magic_unquote "${_SLACK_MSG_CUR_VAL}")
+        fi
+    fi
+    if [[ -n "${_SLACK_MSG_EXP_VAL}" ]]
+    then
+        data_contains_string "${_SLACK_MSG_EXP_VAL}" "${MAGIC_QUOTE}"
+        # shellcheck disable=SC2181
+        if (( $? > 0 ))
+        then
+            _SLACK_MSG_EXP_VAL=$(data_magic_unquote "${_SLACK_MSG_EXP_VAL}")
+        fi
+    fi
+    if (( _SLACK_MSG_STC > 0 ))
+    then
+        # shellcheck disable=SC1117
+        _SLACK_BODY=$(printf "%s\n%s\n" "${_SLACK_BODY}" "${_SLACK_MSG_TEXT}")
+    fi
+done
+
+# send message
+# find 'curl'
+_CURL_BIN="$(command -v curl 2>/dev/null)"
+if [[ -x ${_CURL_BIN} ]] && [[ -n "${_CURL_BIN}" ]]
+then
+    if (( ARG_DEBUG == 0 ))
+    then
+        ${_CURL_BIN} --silent --data-urlencode \
+          "$(printf 'payload={"text": "%s\n\n%s" }' "${_SLACK_TEXT}" "${_SLACK_BODY}")" \
+          "${_SLACK_WEBHOOK}" >/dev/null 2>&1
+    else
+        ${_CURL_BIN} --data-urlencode \
+          "$(printf 'payload={"text": "%s\n\n%s" }' "${_SLACK_TEXT}" "${_SLACK_BODY}")" \
+          "${_SLACK_WEBHOOK}"
+    fi
+ else
+    die "unable to send message to Slack - curl is not installed here"
+fi
+
+log "Slack alert sent: ${_SLACK_HC} failed, FAIL_ID=${_SLACK_FAIL_ID}"
+
+return 0
+}
+
+#******************************************************************************
+# END of script
+#******************************************************************************

opt/hc/lib/core/notify_sms.sh

@@ -20,7 +20,8 @@
 # DOES: send sms alert
 # EXPECTS: 1=HC name [string], 2=HC FAIL_ID [string]
 # RETURNS: 0
-# REQUIRES: data_get_lvalue_from_config(), init_hc(), log(), warn()
+# REQUIRES: data_encode_url(), data_get_lvalue_from_config(), init_hc(),
+#           log(), warn(), curl
 #
 # -----------------------------------------------------------------------------
 # DO NOT CHANGE THIS FILE UNLESS YOU KNOW WHAT YOU ARE DOING!
@@ -31,7 +32,7 @@ function notify_sms
 {
 # ------------------------- CONFIGURATION starts here -------------------------
 typeset _CONFIG_FILE="${CONFIG_DIR}/core/providers/$0.conf"
-typeset _VERSION="2018-10-28"                               # YYYY-MM-DD
+typeset _VERSION="2022-10-14"                               # YYYY-MM-DD
 typeset _SUPPORTED_PLATFORMS="AIX,HP-UX,Linux"              # uname -s match
 # ------------------------- CONFIGURATION ends here ---------------------------
 

opt/hc/lib/platform/aix/check_aix_file_change.sh

@@ -30,6 +30,7 @@
 # @(#) 2019-03-09: added support for --log-healthy [Patrick Van der Veken]
 # @(#) 2019-03-16: replace 'which' [Patrick Van der Veken]
 # @(#) 2020-09-05: fix log_hc call for failed checksum + quote fix [Patrick Van der Veken]
+# @(#) 2021-01-13: fix log_hc call (wrong logic) [Patrick Van der Veken]
 # -----------------------------------------------------------------------------
 # DO NOT CHANGE THIS FILE UNLESS YOU KNOW WHAT YOU ARE DOING!
 #******************************************************************************
@@ -39,7 +40,7 @@ function check_aix_file_change
 {
 # ------------------------- CONFIGURATION starts here -------------------------
 typeset _CONFIG_FILE="${CONFIG_DIR}/$0.conf"
-typeset _VERSION="2020-09-05"                           # YYYY-MM-DD
+typeset _VERSION="2021-01-13"                           # YYYY-MM-DD
 typeset _SUPPORTED_PLATFORMS="Linux"                    # uname -s match
 # ------------------------- CONFIGURATION ends here ---------------------------
 
@@ -322,7 +323,7 @@ do
     fi
 
     # bounce failures back and jump to next file
-    if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+    if (( _LOG_HEALTHY > 0 && _STC > 0 ))
     then
         log_hc "$0" ${_STC} "${_MSG}"
         continue

opt/hc/lib/platform/aix/check_aix_uptime.sh

@@ -0,0 +1,349 @@
+#!/usr/bin/env ksh
+#------------------------------------------------------------------------------
+# @(#) check_aix_uptime
+#------------------------------------------------------------------------------
+# @(#) Copyright (C) 2020 by KUDOS BVBA (info@kudos.be).  All rights reserved.
+#
+# This program is a free software; you can redistribute it and/or modify
+# it under the same terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details
+#------------------------------------------------------------------------------
+#
+# DOCUMENTATION (MAIN)
+# -----------------------------------------------------------------------------
+# @(#) MAIN: check_aix_uptime
+# DOES: see _show_usage()
+# EXPECTS: see _show_usage()
+# REQUIRES: data_is_numeric(), data_timestring_to_mins(), data_comma2space(),
+#           init_hc(), log_hc(), warn()
+#
+# @(#) HISTORY:
+# @(#) 2020-12-21: initial version [Patrick Van der Veken]
+# -----------------------------------------------------------------------------
+# DO NOT CHANGE THIS FILE UNLESS YOU KNOW WHAT YOU ARE DOING!
+#------------------------------------------------------------------------------
+
+# -----------------------------------------------------------------------------
+function check_aix_uptime
+{
+# ------------------------- CONFIGURATION starts here -------------------------
+typeset _CONFIG_FILE="${CONFIG_DIR}/$0.conf"
+typeset _STATE_FILE="${STATE_PERM_DIR}/current.uptime"
+typeset _VERSION="2020-12-21"                           # YYYY-MM-DD
+typeset _SUPPORTED_PLATFORMS="AIX"                      # uname -s match
+# ------------------------- CONFIGURATION ends here ---------------------------
+
+# set defaults
+(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set "${DEBUG_OPTS}"
+init_hc "$0" "${_SUPPORTED_PLATFORMS}" "${_VERSION}"
+typeset _ARGS=$(data_comma2space "$*")
+typeset _ARG=""
+typeset _MSG=""
+typeset _STC=0
+typeset _LOG_HEALTHY=0
+typeset _CFG_HEALTHY=""
+typeset _CFG_CHECK_REBOOT=""
+typeset _CFG_REBOOT_TIME=""
+typeset _CFG_CHECK_OLD_AGE=""
+typeset _CFG_OLD_AGE_TIME=""
+typeset _CHECK_REBOOT=""
+typeset _REBOOT_TIME=""
+typeset _REBOOT_TIME_MINS=""
+typeset _CHECK_OLD_AGE=""
+typeset _OLD_AGE_TIME=""
+typeset _OLD_AGE_TIME_MINS=""
+typeset _CURRENT_UPTIME=""
+typeset _CURRENT_UPTIME_MINS=""
+typeset _INIT_TIME=""
+typeset _PREVIOUS_UPTIME=""
+typeset _PREVIOUS_UPTIME_MINS=""
+typeset _THRESHOLD_UPTIME_MINS=""
+
+# handle arguments (originally comma-separated)
+for _ARG in ${_ARGS}
+do
+    case "${_ARG}" in
+        help)
+            _show_usage "$0" "${_VERSION}" "${_CONFIG_FILE}" && return 0
+            ;;
+    esac
+done
+
+# handle config file
+[[ -n "${ARG_CONFIG_FILE}" ]] && _CONFIG_FILE="${ARG_CONFIG_FILE}"
+if [[ ! -r ${_CONFIG_FILE} ]]
+then
+    warn "unable to read configuration file at ${_CONFIG_FILE}"
+    return 1
+fi
+# read required config values
+_CFG_HEALTHY=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'log_healthy')
+case "${_CFG_HEALTHY}" in
+    yes|YES|Yes)
+        _LOG_HEALTHY=1
+        ;;
+    *)
+        # do not override hc_arg
+        (( _LOG_HEALTHY > 0 )) || _LOG_HEALTHY=0
+        ;;
+esac
+_CFG_CHECK_REBOOT=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'check_reboot')
+case "${_CFG_CHECK_REBOOT}" in
+    no|No|NO)
+        _CHECK_REBOOT=0
+        ;;
+    *)
+        _CHECK_REBOOT=1
+        ;;
+esac
+_CFG_REBOOT_TIME=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'reboot_time')
+if [[ -z "${_CFG_REBOOT_TIME}" ]]
+then
+    # default
+    _REBOOT_TIME="60m"
+else
+    _REBOOT_TIME="${_CFG_REBOOT_TIME}"
+fi
+_CFG_CHECK_OLD_AGE=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'check_old_age')
+case "${_CFG_CHECK_OLD_AGE}" in
+    yes|Yes|Yes)
+        _CHECK_OLD_AGE=1
+        ;;
+    *)
+        _CHECK_OLD_AGE=0
+        ;;
+esac
+_CFG_OLD_AGE_TIME=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'old_age_time')
+if [[ -z "${_CFG_OLD_AGE_TIME}" ]]
+then
+    # default
+    _OLD_AGE_TIME="365d"
+else
+    _OLD_AGE_TIME="${_CFG_OLD_AGE_TIME}"
+fi
+
+# log_healthy
+(( ARG_LOG_HEALTHY > 0 )) && _LOG_HEALTHY=1
+if (( _LOG_HEALTHY > 0 ))
+then
+    if (( ARG_LOG > 0 ))
+    then
+        log "logging/showing passed health checks"
+    else
+        log "showing passed health checks (but not logging)"
+    fi
+else
+    log "not logging/showing passed health checks"
+fi
+
+#------------------------------------------------------------------------------
+# read uptime from init process
+# shellcheck disable=SC1007
+_INIT_TIME=$(UNIX95= ps -p 1 -o etime 2>/dev/null | tail -1)
+if [[ -n "${_INIT_TIME}" ]]
+then
+    # calculate exact uptime (seconds)
+    _CURRENT_UPTIME=$(print "${_INIT_TIME}" |\
+        awk '
+            BEGIN { days = 0; hours = 0; mins = 0; seconds = 0 };
+            {
+                gsub(/[ \t]/, "");
+                # get days
+                split ($0, day_str, "-");
+                if (2 in day_str) {
+                    # string has days
+                    days = day_str[1];
+                    split (day_str[2], hour_str, ":");
+                } else {
+                    split (day_str[1], hour_str, ":");
+                }
+                # get hours/minutes/seconds
+                hours = hour_str[1];
+                mins  = hour_str[2];
+                if (3 in hour_str) {
+                    # string has seconds
+                    secs  = hour_str[3];
+                }
+            }
+            END {
+                time = (days * 24 * 60 * 60) + (hours * 60 * 60) + (mins * 60) + secs;
+                print time;
+            }' 2>/dev/null)
+    data_is_numeric "${_CURRENT_UPTIME}"
+    # shellcheck disable=SC2181
+    if (( $? > 0 ))
+    then
+        warn "unable to calculate uptime value (seconds)"
+        (( ARG_DEBUG )) && debug "_CURRENT_UPTIME=${_CURRENT_UPTIME}"
+        return 1
+    fi
+else
+    warn "uptime of INIT (1) process cannot be determined"
+    return 1
+fi
+
+#------------------------------------------------------------------------------
+# read state file
+if [[ -r ${_STATE_FILE} ]]
+then
+    _PREVIOUS_UPTIME=$(<"${_STATE_FILE}")
+    # shellcheck disable=SC2181
+    if (( $? > 0 ))
+    then
+        warn "failed to read state file at ${_STATE_FILE}"
+        _PREVIOUS_UPTIME=""
+    fi
+fi
+
+#------------------------------------------------------------------------------
+# convert uptimes values
+_CURRENT_UPTIME_MINS=$(( _CURRENT_UPTIME / 60 ))
+data_is_numeric "${_CURRENT_UPTIME_MINS}"
+# shellcheck disable=SC2181
+if (( $? > 0 ))
+then
+    warn "unable to calculate current uptime value (minutes)"
+    (( ARG_DEBUG )) && debug "_CURRENT_UPTIME_MINS=${_CURRENT_UPTIME_MINS}"
+    return 1
+fi
+_PREVIOUS_UPTIME_MINS=$(( _PREVIOUS_UPTIME / 60 ))
+data_is_numeric "${_CURRENT_UPTIME_MINS}"
+# shellcheck disable=SC2181
+if (( $? > 0 ))
+then
+    warn "unable to calculate previous uptime value (minutes)"
+    (( ARG_DEBUG )) && debug "_PREVIOUS_UPTIME_MINS=${_PREVIOUS_UPTIME_MINS}"
+    return 1
+fi
+
+#------------------------------------------------------------------------------
+# check reboot event
+if (( _CHECK_REBOOT > 0 ))
+then
+    # convert _REBOOT_TIME to minutes
+    _REBOOT_TIME_MINS=$(data_timestring_to_mins "${_REBOOT_TIME}")
+    data_is_numeric "${_REBOOT_TIME_MINS}"
+    # shellcheck disable=SC2181
+    if (( $? > 0 ))
+    then
+        warn "unable to calculate 'reboot_time' value from configuration file ${_CONFIG_FILE}"
+        (( ARG_DEBUG )) && debug "_REBOOT_TIME=${_REBOOT_TIME}"
+        return 1
+    fi
+
+    # previous uptime missing?
+    if [[ -z "${_PREVIOUS_UPTIME}" ]]
+    then
+        if (( ARG_LOG > 0 ))
+        then
+            print "${_CURRENT_UPTIME}" >"${_STATE_FILE}"
+            # shellcheck disable=SC2181
+            if (( $? > 0 ))
+            then
+                warn "failed to update state file at ${_STATE_FILE}"
+                return 1
+            else
+                log "unable to find previously recorded uptime, resetting to current uptime"
+                return 0
+            fi
+        else
+            log "unable to find previously recorded uptime, resetting to current uptime"
+        fi
+    else
+        # current uptime + reboot time is smaller than previous uptime?
+        _THRESHOLD_UPTIME_MINS=$(( _CURRENT_UPTIME_MINS + _REBOOT_TIME_MINS ))
+        if (( _THRESHOLD_UPTIME_MINS < _PREVIOUS_UPTIME_MINS ))
+        then
+            _MSG="reboot check: current uptime is NOK; check if reboot occurred"
+            _STC=1
+        else
+            _MSG="reboot check: current uptime is OK"
+            _STC=0
+        fi
+    fi
+    if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+    then
+        log_hc "$0" ${_STC} "${_MSG}" "${_THRESHOLD_UPTIME_MINS}" "${_PREVIOUS_UPTIME_MINS}"
+    fi
+
+    # update state file
+    if (( ARG_LOG > 0 ))
+    then
+        print "${_CURRENT_UPTIME}" >"${_STATE_FILE}"
+        # shellcheck disable=SC2181
+        if (( $? > 0 ))
+        then
+            warn "failed to update state file at ${_STATE_FILE}"
+            return 1
+        fi
+    fi
+else
+    log "reboot check: not enabled"
+fi
+
+#------------------------------------------------------------------------------
+# check old age event
+if (( _CHECK_OLD_AGE > 0 ))
+then
+    # convert _OLD_AGE_TIME to minutes
+    _OLD_AGE_TIME_MINS=$(data_timestring_to_mins "${_OLD_AGE_TIME}")
+    data_is_numeric "${_OLD_AGE_TIME_MINS}"
+    # shellcheck disable=SC2181
+    if (( $? > 0 ))
+    then
+        warn "unable to calculate 'old_age_time' value from configuration file ${_CONFIG_FILE}"
+        (( ARG_DEBUG )) && debug "_OLD_AGE_TIME=${_OLD_AGE_TIME}"
+        return 1
+    fi
+
+    # are we old age yet?
+    if (( _CURRENT_UPTIME_MINS > _OLD_AGE_TIME_MINS ))
+    then
+        _MSG="old_age check: current uptime is NOK; old age has arrived (>${_OLD_AGE_TIME})"
+        _STC=1
+    else
+        _MSG="old_age check: current uptime is OK"
+        _STC=0
+    fi
+    if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+    then
+        log_hc "$0" ${_STC} "${_MSG}" "${_CURRENT_UPTIME_MINS}" "${_OLD_AGE_TIME_MINS}"
+    fi
+else
+    log "old age check: not enabled"
+fi
+
+return 0
+}
+
+# -----------------------------------------------------------------------------
+function _show_usage
+{
+cat <<- EOT
+NAME        : $1
+VERSION     : $2
+CONFIG      : $3 with:
+               log_healthy=<yes|no>
+               check_reboot=<yes|no>
+               reboot_time=<timestring>
+               check_old_age=<yes|no>
+               old_age_time=<timestring>
+PURPOSE     : Checks for unexpected/unplanned reboot events based on uptime
+               values.
+              Checks whether the host has been up and running for too much time.
+LOG HEALTHY : Supported
+
+EOT
+
+return 0
+}
+
+
+#------------------------------------------------------------------------------
+# END of script
+#------------------------------------------------------------------------------

opt/hc/lib/platform/hp-ux/check_hpux_cron_status.sh

@@ -19,12 +19,13 @@
 # @(#) MAIN: check_hpux_cron_status
 # DOES: see _show_usage()
 # EXPECTS: n/a
-# REQUIRES: data_comma2space(), init_hc(), log_hc()
+# REQUIRES: data_is_numeric(), data_comma2space(), init_hc(), log_hc()
 #
 # @(#) HISTORY:
 # @(#) 2018-02-08: initial version [Patrick Van der Veken]µ
 # @(#) 2018-02-13: fix to avoid log check if cron is not active [Patrick Van der Veken]
 # @(#) 2019-03-16: replace 'which' [Patrick Van der Veken]
+# @(#) 2021-03-25: make _WAIT_TIME & _CRON_LOG_FILE configurable [Patrick Van der Veken]
 # -----------------------------------------------------------------------------
 # DO NOT CHANGE THIS FILE UNLESS YOU KNOW WHAT YOU ARE DOING!
 #******************************************************************************
@@ -33,20 +34,25 @@
 function check_hpux_cron_status
 {
 # ------------------------- CONFIGURATION starts here -------------------------
-typeset _CRON_LOG_FILE="/var/adm/cron/log"
-typeset _WAIT_TIME=10
-typeset _VERSION="2019-02-16"                           # YYYY-MM-DD
+typeset _CONFIG_FILE="${CONFIG_DIR}/$0.conf"
+typeset _VERSION="2021-03-25"                           # YYYY-MM-DD
 typeset _SUPPORTED_PLATFORMS="HP-UX"                    # uname -s match
 # ------------------------- CONFIGURATION ends here ---------------------------
 
 # set defaults
-(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set ${DEBUG_OPTS}
+(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set "${DEBUG_OPTS}"
 init_hc "$0" "${_SUPPORTED_PLATFORMS}" "${_VERSION}"
 typeset _ARGS=$(data_comma2space "$*")
 typeset _ARG=""
 typeset _MSG=""
 typeset _STC=0
+typeset _CFG_HEALTHY=""
 typeset _LOG_HEALTHY=0
+typeset _CFG_CRON_LOG_FILE=""
+typeset _CFG_WAIT_TIME=""
+typeset _LOG_HEALTHY=0
+typeset _CRON_LOG_FILE=""
+typeset _WAIT_TIME=""
 typeset _JOB_ID=""
 typeset _AT_BIN=""
 
@@ -55,11 +61,56 @@ for _ARG in ${_ARGS}
 do
     case "${_ARG}" in
         help)
-            _show_usage $0 ${_VERSION} ${_CONFIG_FILE} && return 0
+            _show_usage "${0}" "${_VERSION}" "${_CONFIG_FILE}" && return 0
             ;;
     esac
 done
 
+# handle configuration file
+[[ -n "${ARG_CONFIG_FILE}" ]] && _CONFIG_FILE="${ARG_CONFIG_FILE}"
+if [[ ! -r ${_CONFIG_FILE} ]]
+then
+    warn "unable to read configuration file at ${_CONFIG_FILE}"
+    return 1
+fi
+_CFG_WAIT_TIME=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'wait_time')
+if [[ -z "${_CFG_WAIT_TIME}" ]]
+then
+    # default
+    _WAIT_TIME=10
+    log "setting value for parameter wait_time to its default (${_WAIT_TIME})"
+else
+    data_is_numeric "${_CFG_WAIT_TIME}"
+    # shellcheck disable=SC2181
+    if (( $? > 0 ))
+    then
+        warn "wait time parameter is not numeric in configuration file ${_CONFIG_FILE}"
+        return 1
+    else
+        _WAIT_TIME=${_CFG_WAIT_TIME}
+    fi
+fi
+_CFG_CRON_LOG_FILE=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'cron_log')
+if [[ -z "${_CFG_CRON_LOG_FILE}" ]]
+then
+    # default
+    _CRON_LOG_FILE="/var/adm/cron/log"
+    log "setting value for parameter cron_log to its default (${_CRON_LOG_FILE})"
+else
+    _CRON_LOG_FILE="${_CFG_CRON_LOG_FILE}"
+    log "setting value for parameter cron_log (${_CRON_LOG_FILE})"
+fi
+_CFG_HEALTHY=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'log_healthy')
+case "${_CFG_HEALTHY}" in
+    yes|YES|Yes)
+        _LOG_HEALTHY=1
+        ;;
+    *)
+        # do not override hc_arg
+        (( _LOG_HEALTHY > 0 )) || _LOG_HEALTHY=0
+        ;;
+esac
+
 # log_healthy
 (( ARG_LOG_HEALTHY > 0 )) && _LOG_HEALTHY=1
 if (( _LOG_HEALTHY > 0 ))
@@ -74,10 +125,20 @@ else
     log "not logging/showing passed health checks"
 fi
 
+# check timeout (_WAIT_TIME must be at least 30 secs smaller than health check timeout)
+if (( _WAIT_TIME > 0 ))
+then
+    if (( (_WAIT_TIME + 30) > HC_TIME_OUT ))
+    then
+        warn "wait time value will conflict with health check timeout. Specify a (larger) --timeout value"
+    return 1
+    fi
+fi
+
 # ---- process state ----
 # try the pgrep way (note: old pgreps do not support '-c')
 (( ARG_DEBUG > 0 )) && debug "checking cron service via pgrep"
-(( $(pgrep -u root cron 2>>${HC_STDERR_LOG} | wc -l 2>/dev/null) == 0 )) && _STC=1
+(( $(pgrep -u root cron 2>>"${HC_STDERR_LOG}" | wc -l 2>/dev/null) == 0 )) && _STC=1
 
 # evaluate results
 case ${_STC} in
@@ -99,18 +160,30 @@ then
 fi
 
 # ---- log state ----
-_AT_BIN="$(command -v at 2>>${HC_STDERR_LOG})"
+# check cron log file
+if [[ ! -r ${_CRON_LOG_FILE} ]]
+then
+    _MSG="cron log does not exist (${_CRON_LOG_FILE})"
+    _STC=1
+    if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+    then
+        log_hc "$0" 1 "${_MSG}"
+    fi
+    return 0
+fi
+# create test event
+_AT_BIN=$(command -v at 2>>"${HC_STDERR_LOG}")
 if [[ -x ${_AT_BIN} && -n "${_AT_BIN}" ]]
 then
     # start test job
     (( ARG_DEBUG > 0 )) && debug "checking cron log via {${_AT_BIN}}"
-    (echo "*** CHECK LOG ***" >/dev/null | ${_AT_BIN} now) >>${HC_STDOUT_LOG} 2>>${HC_STDERR_LOG}
-    sleep ${_WAIT_TIME}
-    if (( $(grep -c 'cron may not be running' ${HC_STDERR_LOG} 2>/dev/null) == 0 ))
+    (echo "*** CHECK LOG ***" >/dev/null | ${_AT_BIN} now) >>"${HC_STDOUT_LOG}" 2>>"${HC_STDERR_LOG}"
+    sleep "${_WAIT_TIME}"
+    if (( $(grep -c 'cron may not be running' "${HC_STDERR_LOG}" 2>/dev/null) == 0 ))
     then
         # find job results
-        _JOB_ID=$(grep -E -e '^job' ${HC_STDERR_LOG} 2>/dev/null | awk '{ print $2}' 2>/dev/null)
-        if [[ -n "${_JOB_ID}" ]] && (( $(grep -c "${_JOB_ID}" ${_CRON_LOG_FILE} 2>/dev/null) > 0 ))
+        _JOB_ID=$(grep -E -e '^job' "${HC_STDERR_LOG}" 2>/dev/null | awk '{ print $2}' 2>/dev/null)
+        if [[ -n "${_JOB_ID}" ]] && (( $(grep -c "${_JOB_ID}" "${_CRON_LOG_FILE}" 2>/dev/null) > 0 ))
         then
             _MSG="cron is logging correctly, schedule via {${_AT_BIN}} OK"
             _STC=0
@@ -125,7 +198,7 @@ then
 else
     # check cron log itself
     (( ARG_DEBUG > 0 )) && debug "checking cron log via file check"
-    if [[ -r ${_CRON_LOG_FILE} ]] && [[ -s ${_CRON_LOG_FILE} ]]
+    if [[ -s ${_CRON_LOG_FILE} ]]
     then
         _MSG="cron is logging correctly (${_CRON_LOG_FILE})"
         _STC=0
@@ -148,9 +221,12 @@ function _show_usage
 cat <<- EOT
 NAME        : $1
 VERSION     : $2
-CONFIG      : $3
+CONFIG      : $3 with parameters:
+                log_healthy=<yes|no>
+                wait_time=<seconds>
+                cron_log=<file_path>
 PURPOSE     : Checks whether cron (CRON) service is running and whether cron is
-              actually logging to ${_CRON_LOG_FILE}.
+              actually logging to the cron log file.
 LOG HEALTHY : Supported
 
 EOT

opt/hc/lib/platform/hp-ux/check_hpux_defunct_processes.sh

@@ -0,0 +1,212 @@
+#!/usr/bin/env ksh
+#******************************************************************************
+# @(#) check_hpux_defunct_processes.sh
+#******************************************************************************
+# @(#) Copyright (C) 2021 by KUDOS BVBA (info@kudos.be).  All rights reserved.
+#
+# This program is a free software; you can redistribute it and/or modify
+# it under the same terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details
+#******************************************************************************
+#
+# DOCUMENTATION (MAIN)
+# -----------------------------------------------------------------------------
+# @(#) MAIN: check_hpux_defunct_processes
+# DOES: see _show_usage()
+# EXPECTS: n/a
+# REQUIRES: data_comma2space(), data_is_numeric(), init_hc(), log_hc()
+#
+# @(#) HISTORY:
+# @(#) 2021-04-07: initial version [Patrick Van der Veken]
+# -----------------------------------------------------------------------------
+# DO NOT CHANGE THIS FILE UNLESS YOU KNOW WHAT YOU ARE DOING!
+#******************************************************************************
+
+# -----------------------------------------------------------------------------
+function check_hpux_defunct_processes
+{
+# ------------------------- CONFIGURATION starts here -------------------------
+typeset _CONFIG_FILE="${CONFIG_DIR}/$0.conf"
+typeset _VERSION="2021-04-07"                           # YYYY-MM-DD
+typeset _SUPPORTED_PLATFORMS="HP-UX"                    # uname -s match
+# ------------------------- CONFIGURATION ends here ---------------------------
+
+# set defaults
+(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set "${DEBUG_OPTS}"
+init_hc "$0" "${_SUPPORTED_PLATFORMS}" "${_VERSION}"
+typeset _ARGS=$(data_comma2space "$*")
+typeset _ARG=""
+typeset _MSG=""
+typeset _STC=0
+typeset _CFG_GROUP_BY_PPID=""
+typeset _GROUP_BY_PPID=""
+typeset _CFG_PROCESS_THRESHOLD=""
+typeset _PROCESS_THRESHOLD=""
+typeset _CFG_HEALTHY=""
+typeset _LOG_HEALTHY=0
+typeset _DEFUNCT_PROCS=""
+typeset _NUM_DEFUNCT_PROCS=""
+typeset _PPID=""
+
+# handle arguments (originally comma-separated)
+for _ARG in ${_ARGS}
+do
+    case "${_ARG}" in
+        help)
+            _show_usage "${0}" "${_VERSION}" "${_CONFIG_FILE}" && return 0
+            ;;
+    esac
+done
+
+# handle configuration file
+[[ -n "${ARG_CONFIG_FILE}" ]] && _CONFIG_FILE="${ARG_CONFIG_FILE}"
+if [[ ! -r ${_CONFIG_FILE} ]]
+then
+    warn "unable to read configuration file at ${_CONFIG_FILE}"
+    return 1
+fi
+# read required configuration values
+_CFG_PROCESS_THRESHOLD=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'process_threshold')
+if [[ -z "${_CFG_PROCESS_THRESHOLD}" ]]
+then
+    # default
+    _PROCESS_THRESHOLD=10
+    log "setting value for parameter process_threshold to its default (10)"
+else
+    data_is_numeric "${_CFG_PROCESS_THRESHOLD}"
+    # shellcheck disable=SC2181
+    if (( $? > 0 ))
+    then
+        warn "value for parameter process_threshold in configuration file ${_CONFIG_FILE} is invalid"
+        return 1
+    else
+        _PROCESS_THRESHOLD=${_CFG_PROCESS_THRESHOLD}
+        log "setting value for parameter collect_interval (${_PROCESS_THRESHOLD})"
+    fi
+fi
+_CFG_GROUP_BY_PPID=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'group_by_ppid')
+case "${_CFG_GROUP_BY_PPID}" in
+    no|NO|No)
+        _GROUP_BY_PPID=0
+        log "setting value for parameter group_by_ppid (No)"
+        ;;
+    *)
+        # default
+        _GROUP_BY_PPID=1
+        log "setting value for parameter group_by_ppid to its default (Yes)"
+        ;;
+esac
+_CFG_HEALTHY=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'log_healthy')
+case "${_CFG_HEALTHY}" in
+    yes|YES|Yes)
+        _LOG_HEALTHY=1
+        ;;
+    *)
+        # do not override hc_arg
+        (( _LOG_HEALTHY > 0 )) || _LOG_HEALTHY=0
+        ;;
+esac
+
+# log_healthy
+(( ARG_LOG_HEALTHY > 0 )) && _LOG_HEALTHY=1
+if (( _LOG_HEALTHY > 0 ))
+then
+    if (( ARG_LOG > 0 ))
+    then
+        log "logging/showing passed health checks"
+    else
+        log "showing passed health checks (but not logging)"
+    fi
+else
+    log "not logging/showing passed health checks"
+fi
+
+# collect defunct processes
+# shellcheck disable=SC2009
+_DEFUNCT_PROCS=$(UNIX95=1 ps -eo ppid,pid,comm,etime 2>"${HC_STDERR_LOG}" | tee -a "${HC_STDOUT_LOG}" 2>/dev/null | grep '[d]efunct' 2>/dev/null)
+
+# check defunct processes
+if [[ -z "${_DEFUNCT_PROCS}" ]]
+then
+    _MSG="no defunct process(es) detected"
+    _STC=0
+    if (( _LOG_HEALTHY > 0 ))
+    then
+        log_hc "$0" ${_STC} "${_MSG}"
+    fi
+    return 0
+else
+    if (( _GROUP_BY_PPID > 0 ))
+    then
+        # per by PPID
+        print -R "${_DEFUNCT_PROCS}" | awk '
+
+            {
+                # count PIDs per PPID
+                counts[$1]++;
+            }
+
+            END {
+                for (i in counts) print i ":" counts[i]
+            }' 2>/dev/null | while IFS=":" read -r _PPID _NUM_DEFUNCT_PROCS
+        do
+            (( ARG_DEBUG > 0 )) && debug "awk found PPID: ${_PPID} with # procs: ${_NUM_DEFUNCT_PROCS}"
+            if (( _NUM_DEFUNCT_PROCS <= _PROCESS_THRESHOLD ))
+            then
+                _MSG="defunct process(es) detected for PPID (${_PPID}) but are still under threshold (${_NUM_DEFUNCT_PROCS}<=${_PROCESS_THRESHOLD})"
+                _STC=0
+            else
+                _MSG="defunct process(es) detected for PPID (${_PPID}) and are over threshold (${_NUM_DEFUNCT_PROCS}>${_PROCESS_THRESHOLD})"
+                _STC=1
+            fi
+            if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+            then
+                log_hc "$0" ${_STC} "${_MSG}" "${_NUM_DEFUNCT_PROCS}" "${_PROCESS_THRESHOLD}"
+            fi
+        done
+    else
+        _NUM_DEFUNCT_PROCS=$(print -R "${_DEFUNCT_PROCS}" | wc -l 2>/dev/null)
+        if (( _NUM_DEFUNCT_PROCS <= _PROCESS_THRESHOLD ))
+        then
+            _MSG="defunct process(es) detected but are still under threshold (${_NUM_DEFUNCT_PROCS}<=${_PROCESS_THRESHOLD})"
+            _STC=0
+        else
+            _MSG="defunct process(es) detected and are over threshold (${_NUM_DEFUNCT_PROCS}>${_PROCESS_THRESHOLD})"
+            _STC=1
+        fi
+        if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+        then
+            log_hc "$0" ${_STC} "${_MSG}" "${_NUM_DEFUNCT_PROCS}" "${_PROCESS_THRESHOLD}"
+        fi
+    fi
+fi
+
+return 0
+}
+
+# -----------------------------------------------------------------------------
+function _show_usage
+{
+cat <<- EOT
+NAME        : $1
+VERSION     : $2
+CONFIG      : $3 with parameters:
+                log_healthy=<yes|no>
+                process_threshold=<#_of_processes>
+                group_by_ppid=<yes|no>
+PURPOSE     : Checks whether there are (too many) defunct processes on the host.
+LOG HEALTHY : Supported
+
+EOT
+
+return 0
+}
+
+#******************************************************************************
+# END of script
+#******************************************************************************

opt/hc/lib/platform/hp-ux/check_hpux_file_change.sh

@@ -30,6 +30,7 @@
 # @(#) 2019-03-09: added support for --log-healthy [Patrick Van der Veken]
 # @(#) 2019-03-16: replace 'which' [Patrick Van der Veken]
 # @(#) 2020-09-05: fix log_hc call for failed checksum + quote fix [Patrick Van der Veken]
+# @(#) 2021-01-13: fix log_hc call (wrong logic) [Patrick Van der Veken]
 # -----------------------------------------------------------------------------
 # DO NOT CHANGE THIS FILE UNLESS YOU KNOW WHAT YOU ARE DOING!
 #******************************************************************************
@@ -39,7 +40,7 @@ function check_hpux_file_change
 {
 # ------------------------- CONFIGURATION starts here -------------------------
 typeset _CONFIG_FILE="${CONFIG_DIR}/$0.conf"
-typeset _VERSION="2020-05-20"                           # YYYY-MM-DD
+typeset _VERSION="2021-01-13"                           # YYYY-MM-DD
 typeset _SUPPORTED_PLATFORMS="HP-UX"                    # uname -s match
 # ------------------------- CONFIGURATION ends here ---------------------------
 
@@ -322,7 +323,7 @@ do
     fi
 
     # bounce failures back and jump to next file
-    if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+    if (( _LOG_HEALTHY > 0 && _STC > 0 ))
     then
         log_hc "$0" ${_STC} "${_MSG}"
         continue

opt/hc/lib/platform/hp-ux/check_hpux_ioscan.sh

@@ -32,6 +32,7 @@
 # @(#) 2018-10-28: fixed (linter) errors [Patrick Van der Veken]
 # @(#) 2019-01-24: arguments fix [Patrick Van der Veken]
 # @(#) 2019-03-09: added support for --log-healthy [Patrick Van der Veken]
+# @(#) 2021-04-07: quotes & shellcheck fixes [Patrick Van der Veken]
 # -----------------------------------------------------------------------------
 # DO NOT CHANGE THIS FILE UNLESS YOU KNOW WHAT YOU ARE DOING!
 #******************************************************************************
@@ -43,13 +44,13 @@ function check_hpux_ioscan
 typeset _CONFIG_FILE="${CONFIG_DIR}/$0.conf"
 typeset _IOSCAN_BIN="/usr/sbin/ioscan"
 typeset _IOSCAN_OPTS="-Fn"
-typeset _VERSION="2019-03-09"                           # YYYY-MM-DD
+typeset _VERSION="2021-04-07"                           # YYYY-MM-DD
 typeset _SUPPORTED_PLATFORMS="HP-UX"                    # uname -s match
 # ------------------------- CONFIGURATION ends here ---------------------------
 
 # set defaults
-(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set ${DEBUG_OPTS}
-init_hc "$0" "${_SUPPORTED_PLATFORMS}" "${_VERSION}"
+(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set "${DEBUG_OPTS}"
+init_hc "${0}" "${_SUPPORTED_PLATFORMS}" "${_VERSION}"
 typeset _ARGS=$(data_comma2space "$*")
 typeset _ARG=""
 typeset _MSG=""
@@ -71,7 +72,7 @@ for _ARG in ${_ARGS}
 do
     case "${_ARG}" in
         help)
-            _show_usage $0 ${_VERSION} ${_CONFIG_FILE} && return 0
+            _show_usage "${0}" "${_VERSION}" "${_CONFIG_FILE}" && return 0
             ;;
     esac
 done
@@ -154,7 +155,8 @@ else
         _IOSCAN_OPTS="${_IOSCAN_OPTS}u"
     fi
     log "executing ioscan with options: ${_IOSCAN_OPTS}"
-    ${_IOSCAN_BIN} ${_IOSCAN_OPTS} >>${HC_STDOUT_LOG} 2>>${HC_STDERR_LOG}
+    ${_IOSCAN_BIN} ${_IOSCAN_OPTS} >>"${HC_STDOUT_LOG}" 2>>"${HC_STDERR_LOG}"
+    # shellcheck disable=SC2181
     if (( $? > 0 ))
     then
         _MSG="unable to run command: {${_IOSCAN_BIN}}"
@@ -166,13 +168,13 @@ else
 fi
 
 # check for requested device classes
-grep -E -e ".*:.*:.*:.*:.*:.*:.*:.*:${_IOSCAN_CLASSES}:.*" ${HC_STDOUT_LOG} 2>/dev/null |\
-    while read _IOSCAN_LINE
+grep -E -e ".*:.*:.*:.*:.*:.*:.*:.*:${_IOSCAN_CLASSES}:.*" "${HC_STDOUT_LOG}" 2>/dev/null |\
+    while read -r _IOSCAN_LINE
 do
     # possible states are: CLAIMED, UNCLAIMED, DIFF_HW, NO_HW, ERROR, SCAN
-    _HW_CLASS="$(print ${_IOSCAN_LINE} | cut -f9 -d':')"
-    _HW_PATH="$(print ${_IOSCAN_LINE} | cut -f11 -d':')"
-    _HW_STATE="$(print ${_IOSCAN_LINE} | cut -f16 -d':')"
+    _HW_CLASS=$(print "${_IOSCAN_LINE}" | cut -f9 -d':')
+    _HW_PATH=$(print "${_IOSCAN_LINE}" | cut -f11 -d':')
+    _HW_STATE=$(print "${_IOSCAN_LINE}" | cut -f16 -d':')
 
     case "${_HW_STATE}" in
         NO_HW)
@@ -214,7 +216,6 @@ function _show_usage
 cat <<- EOT
 NAME        : $1
 VERSION     : $2
-CONFIG      : $3 with:
 CONFIG      : $3 with parameters:
                 log_healthy=<yes|no>
                 ioscan_classes=<list_of_device_classes_to_check>

opt/hc/lib/platform/hp-ux/check_hpux_ntp_status.sh

@@ -30,6 +30,7 @@
 # @(#)             with offset calculation [Patrick Van der Veken]
 # @(#) 2019-01-24: arguments fix [Patrick Van der Veken]
 # @(#) 2019-03-09: Text updates [Patrick Van der Veken]
+# @(#) 2020-12-21: fixes for --log-healthy [Patrick Van der Veken]
 # -----------------------------------------------------------------------------
 # DO NOT CHANGE THIS FILE UNLESS YOU KNOW WHAT YOU ARE DOING!
 #------------------------------------------------------------------------------
@@ -39,14 +40,14 @@ function check_hpux_ntp_status
 {
 # ------------------------- CONFIGURATION starts here -------------------------
 typeset _CONFIG_FILE="${CONFIG_DIR}/$0.conf"
-typeset _VERSION="2019-03-09"                           # YYYY-MM-DD
+typeset _VERSION="2020-12-21"                           # YYYY-MM-DD
 typeset _SUPPORTED_PLATFORMS="HP-UX"                    # uname -s match
 typeset _NTPQ_BIN="/usr/sbin/ntpq"
 typeset _NTPQ_OPTS="-pn"
 # ------------------------- CONFIGURATION ends here ---------------------------
 
 # set defaults
-(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set ${DEBUG_OPTS}
+(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set "${DEBUG_OPTS}"
 init_hc "$0" "${_SUPPORTED_PLATFORMS}" "${_VERSION}"
 typeset _ARGS=$(data_comma2space "$*")
 typeset _ARG=""
@@ -65,7 +66,7 @@ for _ARG in ${_ARGS}
 do
     case "${_ARG}" in
         help)
-            _show_usage $0 ${_VERSION} ${_CONFIG_FILE} && return 0
+            _show_usage "$0" "${_VERSION}" "${_CONFIG_FILE}" && return 0
             ;;
     esac
 done
@@ -148,7 +149,10 @@ case "${_NTP_PEER}" in
         _MSG="NTP is synchronizing against ${_NTP_PEER##*\*}"
         ;;
 esac
-log_hc "$0" ${_STC} "${_MSG}"
+if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+then
+    log_hc "$0" ${_STC} "${_MSG}"
+fi
 
 # 2) offset value
 if (( _STC == 0 ))
@@ -165,7 +169,10 @@ then
             else
                 _MSG="NTP offset of ${_CURR_OFFSET} is within the acceptable range"
             fi
+            if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+            then
                 log_hc "$0" ${_STC} "${_MSG}"
+            fi
             ;;
         *)
             # not numeric

opt/hc/lib/platform/hp-ux/check_hpux_postfix_status.sh

@@ -26,6 +26,7 @@
 # @(#) 2019-01-24: arguments fix [Patrick Van der Veken]
 # @(#) 2019-03-09: added support for --log-healthy [Patrick Van der Veken]
 # @(#) 2019-03-16: replace 'which' [Patrick Van der Veken]
+# @(#) 2020-12-27: add configuration check + quoting fixes [Patrick Van der Veken]
 # -----------------------------------------------------------------------------
 # DO NOT CHANGE THIS FILE UNLESS YOU KNOW WHAT YOU ARE DOING!
 #******************************************************************************
@@ -34,16 +35,17 @@
 function check_hpux_postfix_status
 {
 # ------------------------- CONFIGURATION starts here -------------------------
-typeset _VERSION="2019-03-09"                           # YYYY-MM-DD
+typeset _VERSION="2020-12-27"                           # YYYY-MM-DD
 typeset _SUPPORTED_PLATFORMS="HP-UX"                    # uname -s match
 # ------------------------- CONFIGURATION ends here ---------------------------
 
 # set defaults
-(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set ${DEBUG_OPTS}
+(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set "${DEBUG_OPTS}"
 init_hc "$0" "${_SUPPORTED_PLATFORMS}" "${_VERSION}"
 typeset _ARGS=$(data_comma2space "$*")
 typeset _ARG=""
 typeset _POSTFIX_BIN=""
+typeset _POSTFIX_CHECKER=""
 typeset _MSG=""
 typeset _STC=0
 typeset _LOG_HEALTHY=0
@@ -53,7 +55,7 @@ for _ARG in ${_ARGS}
 do
     case "${_ARG}" in
         help)
-            _show_usage $0 ${_VERSION} ${_CONFIG_FILE} && return 0
+            _show_usage "$0" "${_VERSION}" "${_CONFIG_FILE}" && return 0
             ;;
     esac
 done
@@ -72,10 +74,14 @@ else
     log "not logging/showing passed health checks"
 fi
 
+#-------------------------------------------------------------------------------
+# process state
+
 _POSTFIX_BIN="$(command -v postfix 2>>${HC_STDERR_LOG})"
 if [[ -x ${_POSTFIX_BIN} && -n "${_POSTFIX_BIN}" ]]
 then
-    ${_POSTFIX_BIN} status >>${HC_STDOUT_LOG} 2>>${HC_STDERR_LOG}
+    ${_POSTFIX_BIN} status >>"${HC_STDOUT_LOG}" 2>>"${HC_STDERR_LOG}"
+    # shellcheck disable=SC2181
     if (( $? == 0 ))
     then
         _MSG="postfix is running"
@@ -87,13 +93,35 @@ else
     warn "postfix is not installed here"
     return 1
 fi
-
-# report result
 if (( _LOG_HEALTHY > 0 || _STC > 0 ))
 then
     log_hc "$0" ${_STC} "${_MSG}"
 fi
 
+#-------------------------------------------------------------------------------
+# configuration state
+_POSTFIX_CHECKER="$(command -v postconf 2>>${HC_STDERR_LOG})"
+if [[ -x ${_POSTFIX_CHECKER} && -n "${_POSTFIX_CHECKER}" ]]
+then
+    # dump configuration
+    ${_POSTFIX_CHECKER} -n >>"${HC_STDOUT_LOG}" 2>>"${HC_STDERR_LOG}"
+    # shellcheck disable=SC2181
+    if (( $? > 0 ))
+    then
+        _MSG="postfix configuration files have syntax error(s) {${_POSTFIX_CHECKER} -n}"
+        _STC=1
+    else
+        _MSG="postfix configuration files are syntactically correct"
+        _STC=0
+    fi
+    if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+    then
+        log_hc "$0" ${_STC} "${_MSG}"
+    fi
+else
+    warn "skipping syntax check (unable to find syntax check tool)"
+fi
+
 return 0
 }
 
@@ -103,7 +131,8 @@ function _show_usage
 cat <<- EOT
 NAME        : $1
 VERSION     : $2
-PURPOSE     : Checks whether postfix (mail system) is running
+PURPOSE     : Checks whether postfix (mail system) is running and whether the
+              postfix configuration files are syntactically correct
 LOG HEALTHY : Supported
 
 EOT

opt/hc/lib/platform/hp-ux/check_hpux_uptime.sh

@@ -0,0 +1,349 @@
+#!/usr/bin/env ksh
+#------------------------------------------------------------------------------
+# @(#) check_hpux_uptime
+#------------------------------------------------------------------------------
+# @(#) Copyright (C) 2020 by KUDOS BVBA (info@kudos.be).  All rights reserved.
+#
+# This program is a free software; you can redistribute it and/or modify
+# it under the same terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details
+#------------------------------------------------------------------------------
+#
+# DOCUMENTATION (MAIN)
+# -----------------------------------------------------------------------------
+# @(#) MAIN: check_hpux_uptime
+# DOES: see _show_usage()
+# EXPECTS: see _show_usage()
+# REQUIRES: data_is_numeric(), data_timestring_to_mins(), data_comma2space(),
+#           init_hc(), log_hc(), warn()
+#
+# @(#) HISTORY:
+# @(#) 2020-12-21: initial version [Patrick Van der Veken]
+# -----------------------------------------------------------------------------
+# DO NOT CHANGE THIS FILE UNLESS YOU KNOW WHAT YOU ARE DOING!
+#------------------------------------------------------------------------------
+
+# -----------------------------------------------------------------------------
+function check_hpux_uptime
+{
+# ------------------------- CONFIGURATION starts here -------------------------
+typeset _CONFIG_FILE="${CONFIG_DIR}/$0.conf"
+typeset _STATE_FILE="${STATE_PERM_DIR}/current.uptime"
+typeset _VERSION="2020-12-21"                           # YYYY-MM-DD
+typeset _SUPPORTED_PLATFORMS="HP-UX"                    # uname -s match
+# ------------------------- CONFIGURATION ends here ---------------------------
+
+# set defaults
+(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set "${DEBUG_OPTS}"
+init_hc "$0" "${_SUPPORTED_PLATFORMS}" "${_VERSION}"
+typeset _ARGS=$(data_comma2space "$*")
+typeset _ARG=""
+typeset _MSG=""
+typeset _STC=0
+typeset _LOG_HEALTHY=0
+typeset _CFG_HEALTHY=""
+typeset _CFG_CHECK_REBOOT=""
+typeset _CFG_REBOOT_TIME=""
+typeset _CFG_CHECK_OLD_AGE=""
+typeset _CFG_OLD_AGE_TIME=""
+typeset _CHECK_REBOOT=""
+typeset _REBOOT_TIME=""
+typeset _REBOOT_TIME_MINS=""
+typeset _CHECK_OLD_AGE=""
+typeset _OLD_AGE_TIME=""
+typeset _OLD_AGE_TIME_MINS=""
+typeset _CURRENT_UPTIME=""
+typeset _CURRENT_UPTIME_MINS=""
+typeset _INIT_TIME=""
+typeset _PREVIOUS_UPTIME=""
+typeset _PREVIOUS_UPTIME_MINS=""
+typeset _THRESHOLD_UPTIME_MINS=""
+
+# handle arguments (originally comma-separated)
+for _ARG in ${_ARGS}
+do
+    case "${_ARG}" in
+        help)
+            _show_usage "$0" "${_VERSION}" "${_CONFIG_FILE}" && return 0
+            ;;
+    esac
+done
+
+# handle config file
+[[ -n "${ARG_CONFIG_FILE}" ]] && _CONFIG_FILE="${ARG_CONFIG_FILE}"
+if [[ ! -r ${_CONFIG_FILE} ]]
+then
+    warn "unable to read configuration file at ${_CONFIG_FILE}"
+    return 1
+fi
+# read required config values
+_CFG_HEALTHY=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'log_healthy')
+case "${_CFG_HEALTHY}" in
+    yes|YES|Yes)
+        _LOG_HEALTHY=1
+        ;;
+    *)
+        # do not override hc_arg
+        (( _LOG_HEALTHY > 0 )) || _LOG_HEALTHY=0
+        ;;
+esac
+_CFG_CHECK_REBOOT=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'check_reboot')
+case "${_CFG_CHECK_REBOOT}" in
+    no|No|NO)
+        _CHECK_REBOOT=0
+        ;;
+    *)
+        _CHECK_REBOOT=1
+        ;;
+esac
+_CFG_REBOOT_TIME=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'reboot_time')
+if [[ -z "${_CFG_REBOOT_TIME}" ]]
+then
+    # default
+    _REBOOT_TIME="60m"
+else
+    _REBOOT_TIME="${_CFG_REBOOT_TIME}"
+fi
+_CFG_CHECK_OLD_AGE=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'check_old_age')
+case "${_CFG_CHECK_OLD_AGE}" in
+    yes|Yes|Yes)
+        _CHECK_OLD_AGE=1
+        ;;
+    *)
+        _CHECK_OLD_AGE=0
+        ;;
+esac
+_CFG_OLD_AGE_TIME=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'old_age_time')
+if [[ -z "${_CFG_OLD_AGE_TIME}" ]]
+then
+    # default
+    _OLD_AGE_TIME="365d"
+else
+    _OLD_AGE_TIME="${_CFG_OLD_AGE_TIME}"
+fi
+
+# log_healthy
+(( ARG_LOG_HEALTHY > 0 )) && _LOG_HEALTHY=1
+if (( _LOG_HEALTHY > 0 ))
+then
+    if (( ARG_LOG > 0 ))
+    then
+        log "logging/showing passed health checks"
+    else
+        log "showing passed health checks (but not logging)"
+    fi
+else
+    log "not logging/showing passed health checks"
+fi
+
+#------------------------------------------------------------------------------
+# read uptime from init process
+# shellcheck disable=SC1007
+_INIT_TIME=$(UNIX95= ps -p 1 -o etime 2>/dev/null | tail -1)
+if [[ -n "${_INIT_TIME}" ]]
+then
+    # calculate exact uptime (seconds)
+    _CURRENT_UPTIME=$(print "${_INIT_TIME}" |\
+        awk '
+            BEGIN { days = 0; hours = 0; mins = 0; seconds = 0 };
+            {
+                gsub(/[ \t]/, "");
+                # get days
+                split ($0, day_str, "-");
+                if (2 in day_str) {
+                    # string has days
+                    days = day_str[1];
+                    split (day_str[2], hour_str, ":");
+                } else {
+                    split (day_str[1], hour_str, ":");
+                }
+                # get hours/minutes/seconds
+                hours = hour_str[1];
+                mins  = hour_str[2];
+                if (3 in hour_str) {
+                    # string has seconds
+                    secs  = hour_str[3];
+                }
+            }
+            END {
+                time = (days * 24 * 60 * 60) + (hours * 60 * 60) + (mins * 60) + secs;
+                print time;
+            }' 2>/dev/null)
+    data_is_numeric "${_CURRENT_UPTIME}"
+    # shellcheck disable=SC2181
+    if (( $? > 0 ))
+    then
+        warn "unable to calculate uptime value (seconds)"
+        (( ARG_DEBUG )) && debug "_CURRENT_UPTIME=${_CURRENT_UPTIME}"
+        return 1
+    fi
+else
+    warn "uptime of INIT (1) process cannot be determined"
+    return 1
+fi
+
+#------------------------------------------------------------------------------
+# read state file
+if [[ -r ${_STATE_FILE} ]]
+then
+    _PREVIOUS_UPTIME=$(<"${_STATE_FILE}")
+    # shellcheck disable=SC2181
+    if (( $? > 0 ))
+    then
+        warn "failed to read state file at ${_STATE_FILE}"
+        _PREVIOUS_UPTIME=""
+    fi
+fi
+
+#------------------------------------------------------------------------------
+# convert uptimes values
+_CURRENT_UPTIME_MINS=$(( _CURRENT_UPTIME / 60 ))
+data_is_numeric "${_CURRENT_UPTIME_MINS}"
+# shellcheck disable=SC2181
+if (( $? > 0 ))
+then
+    warn "unable to calculate current uptime value (minutes)"
+    (( ARG_DEBUG )) && debug "_CURRENT_UPTIME_MINS=${_CURRENT_UPTIME_MINS}"
+    return 1
+fi
+_PREVIOUS_UPTIME_MINS=$(( _PREVIOUS_UPTIME / 60 ))
+data_is_numeric "${_CURRENT_UPTIME_MINS}"
+# shellcheck disable=SC2181
+if (( $? > 0 ))
+then
+    warn "unable to calculate previous uptime value (minutes)"
+    (( ARG_DEBUG )) && debug "_PREVIOUS_UPTIME_MINS=${_PREVIOUS_UPTIME_MINS}"
+    return 1
+fi
+
+#------------------------------------------------------------------------------
+# check reboot event
+if (( _CHECK_REBOOT > 0 ))
+then
+    # convert _REBOOT_TIME to minutes
+    _REBOOT_TIME_MINS=$(data_timestring_to_mins "${_REBOOT_TIME}")
+    data_is_numeric "${_REBOOT_TIME_MINS}"
+    # shellcheck disable=SC2181
+    if (( $? > 0 ))
+    then
+        warn "unable to calculate 'reboot_time' value from configuration file ${_CONFIG_FILE}"
+        (( ARG_DEBUG )) && debug "_REBOOT_TIME=${_REBOOT_TIME}"
+        return 1
+    fi
+
+    # previous uptime missing?
+    if [[ -z "${_PREVIOUS_UPTIME}" ]]
+    then
+        if (( ARG_LOG > 0 ))
+        then
+            print "${_CURRENT_UPTIME}" >"${_STATE_FILE}"
+            # shellcheck disable=SC2181
+            if (( $? > 0 ))
+            then
+                warn "failed to update state file at ${_STATE_FILE}"
+                return 1
+            else
+                log "unable to find previously recorded uptime, resetting to current uptime"
+                return 0
+            fi
+        else
+            log "unable to find previously recorded uptime, resetting to current uptime"
+        fi
+    else
+        # current uptime + reboot time is smaller than previous uptime?
+        _THRESHOLD_UPTIME_MINS=$(( _CURRENT_UPTIME_MINS + _REBOOT_TIME_MINS ))
+        if (( _THRESHOLD_UPTIME_MINS < _PREVIOUS_UPTIME_MINS ))
+        then
+            _MSG="reboot check: current uptime is NOK; check if reboot occurred"
+            _STC=1
+        else
+            _MSG="reboot check: current uptime is OK"
+            _STC=0
+        fi
+    fi
+    if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+    then
+        log_hc "$0" ${_STC} "${_MSG}" "${_THRESHOLD_UPTIME_MINS}" "${_PREVIOUS_UPTIME_MINS}"
+    fi
+
+    # update state file
+    if (( ARG_LOG > 0 ))
+    then
+        print "${_CURRENT_UPTIME}" >"${_STATE_FILE}"
+        # shellcheck disable=SC2181
+        if (( $? > 0 ))
+        then
+            warn "failed to update state file at ${_STATE_FILE}"
+            return 1
+        fi
+    fi
+else
+    log "reboot check: not enabled"
+fi
+
+#------------------------------------------------------------------------------
+# check old age event
+if (( _CHECK_OLD_AGE > 0 ))
+then
+    # convert _OLD_AGE_TIME to minutes
+    _OLD_AGE_TIME_MINS=$(data_timestring_to_mins "${_OLD_AGE_TIME}")
+    data_is_numeric "${_OLD_AGE_TIME_MINS}"
+    # shellcheck disable=SC2181
+    if (( $? > 0 ))
+    then
+        warn "unable to calculate 'old_age_time' value from configuration file ${_CONFIG_FILE}"
+        (( ARG_DEBUG )) && debug "_OLD_AGE_TIME=${_OLD_AGE_TIME}"
+        return 1
+    fi
+
+    # are we old age yet?
+    if (( _CURRENT_UPTIME_MINS > _OLD_AGE_TIME_MINS ))
+    then
+        _MSG="old_age check: current uptime is NOK; old age has arrived (>${_OLD_AGE_TIME})"
+        _STC=1
+    else
+        _MSG="old_age check: current uptime is OK"
+        _STC=0
+    fi
+    if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+    then
+        log_hc "$0" ${_STC} "${_MSG}" "${_CURRENT_UPTIME_MINS}" "${_OLD_AGE_TIME_MINS}"
+    fi
+else
+    log "old age check: not enabled"
+fi
+
+return 0
+}
+
+# -----------------------------------------------------------------------------
+function _show_usage
+{
+cat <<- EOT
+NAME        : $1
+VERSION     : $2
+CONFIG      : $3 with:
+               log_healthy=<yes|no>
+               check_reboot=<yes|no>
+               reboot_time=<timestring>
+               check_old_age=<yes|no>
+               old_age_time=<timestring>
+PURPOSE     : Checks for unexpected/unplanned reboot events based on uptime
+               values.
+              Checks whether the host has been up and running for too much time.
+LOG HEALTHY : Supported
+
+EOT
+
+return 0
+}
+
+
+#------------------------------------------------------------------------------
+# END of script
+#------------------------------------------------------------------------------

opt/hc/lib/platform/linux/check_linux_burp_backup.sh

@@ -34,6 +34,8 @@
 # @(#)             added support for --log-healthy [Patrick Van der Veken]
 # @(#) 2019-03-10: fix for burp v2
 # @(#) 2019-03-16: replace 'which' [Patrick Van der Veken]
+# @(#) 2021-03-28: updated code for changing 'burp -v' option as of burp v2.2 +
+#                  quote fixes [Patrick Van der Veken]
 # -----------------------------------------------------------------------------
 # DO NOT CHANGE THIS FILE UNLESS YOU KNOW WHAT YOU ARE DOING!
 #******************************************************************************
@@ -45,12 +47,12 @@ function check_linux_burp_backup
 typeset _BURP_SERVER_CONFIG_FILE="/etc/burp/burp-server.conf"
 typeset _BURP_CLIENT_CONFIG_FILE="/etc/burp/burp.conf"
 typeset _CONFIG_FILE="${CONFIG_DIR}/$0.conf"
-typeset _VERSION="2019-03-16"                           # YYYY-MM-DD
+typeset _VERSION="2021-03-28"                           # YYYY-MM-DD
 typeset _SUPPORTED_PLATFORMS="Linux"                    # uname -s match
 # ------------------------- CONFIGURATION ends here ---------------------------
 
 # set defaults
-(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set ${DEBUG_OPTS}
+(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set "${DEBUG_OPTS}"
 init_hc "$0" "${_SUPPORTED_PLATFORMS}" "${_VERSION}"
 typeset _ARGS=$(data_comma2space "$*")
 typeset _ARG=""
@@ -64,6 +66,7 @@ typeset _BURP_BACKUP_DIR=""
 typeset _BURP_CLIENTCONF_DIR=""
 typeset _BURP_CLIENT=""
 typeset _BURP_VERSION=""
+typeset _BURP_V_OUTPUT=""
 typeset _BURP_WARNINGS=""
 typeset _GNU_DATE=""
 typeset _COUNT=1
@@ -75,7 +78,7 @@ for _ARG in ${_ARGS}
 do
     case "${_ARG}" in
         help)
-            _show_usage $0 ${_VERSION} ${_CONFIG_FILE} && return 0
+            _show_usage "$0" "${_VERSION}" "${_CONFIG_FILE}" && return 0
             ;;
     esac
 done
@@ -99,7 +102,7 @@ case "${_CFG_HEALTHY}" in
 esac
 
 # check for old-style configuration file (non-prefixed stanzas)
-_IS_OLD_STYLE=$(grep -c -E -e "^client:" ${_CONFIG_FILE} 2>/dev/null)
+_IS_OLD_STYLE=$(grep -c -E -e "^client:" "${_CONFIG_FILE}" 2>/dev/null)
 if (( _IS_OLD_STYLE == 0 ))
 then
     warn "no 'client:' stanza(s) found in ${_CONFIG_FILE}; possibly an old-style configuration?"
@@ -123,6 +126,7 @@ fi
 # check for capable GNU date
 _GNU_DATE=$(date --date="1 day ago" '+%s' 2>/dev/null)
 data_is_numeric "${_GNU_DATE}"
+# shellcheck disable=SC2181
 if (( $? > 0 ))
 then
     warn "no capable GNU date found here"
@@ -137,8 +141,20 @@ then
     return 1
 fi
 
-# burp v1 or v2?
-_BURP_VERSION="$(${_BURP_BIN} -v 2>/dev/null)"
+# burp v1 or v2? (up to v2.1 burp -v; as of burp v2.2 use burp -V but we can still use burp -v with a workaround)
+_BURP_V_OUTPUT="$(${_BURP_BIN} -v 2>/dev/null)"
+# check if the output contains 'server version'
+case "${_BURP_V_OUTPUT}" in
+    *Server\ version*)
+        # burp 2.2 and above
+        _BURP_VERSION=$(print "${_BURP_V_OUTPUT}" | grep "Server version" | awk -F":" '{ print $NF}')
+        _BURP_VERSION="burp-"$(data_strip_outer_space "${_BURP_VERSION}")
+        ;;
+    *)
+        # burp 2.1 and below
+        _BURP_VERSION="${_BURP_V_OUTPUT}"
+        ;;
+esac
 (( ARG_DEBUG > 0 )) && debug "burp version: ${_BURP_VERSION}"
 case "${_BURP_VERSION}" in
     burp-2*)
@@ -183,8 +199,8 @@ case "${_BURP_VERSION}" in
 esac
 
 # check backup runs of clients
-grep -E -e "^client:" ${_CONFIG_FILE} 2>/dev/null |\
-    while IFS=':' read _ _BURP_CLIENT _BURP_WARNINGS _BURP_AGE
+grep -E -e "^client:" "${_CONFIG_FILE}" 2>/dev/null |\
+    while IFS=':' read -r _ _BURP_CLIENT _BURP_WARNINGS _BURP_AGE
 do
     typeset _BACKUP_AGING=""
     typeset _BACKUP_DATE=""
@@ -222,10 +238,10 @@ do
         # ex.:
         #   Backup: 0000078 2016-11-27 03:39:03 (deletable)
         #   Backup: 0000079 2016-12-04 03:59:04
-        _BACKUP_STATS="$(${_BURP_BIN} -a l -C ${_BURP_CLIENT} 2>>${HC_STDERR_LOG} | grep '^Backup' | tail -n 1 | cut -f2- -d':')"
+        _BACKUP_STATS="$(${_BURP_BIN} -a l -C "${_BURP_CLIENT}" 2>>"${HC_STDERR_LOG}" | grep '^Backup' | tail -n 1 | cut -f2- -d':')"
         if [[ -n "${_BACKUP_STATS}" ]]
         then
-            _BACKUP_RUN="$(print ${_BACKUP_STATS} | awk '{print $1}')"
+            _BACKUP_RUN="$(print "${_BACKUP_STATS}" | awk '{print $1}')"
             # output format: YYYYMMDD HHMM
             _BACKUP_DATE=$(print "${_BACKUP_STATS}" | awk '{gsub(/-/,"",$2); gsub(/:/,"",$3); print $2" "substr($3,0,4)}' 2>/dev/null)
             # convert to UNIX seconds
@@ -267,16 +283,16 @@ do
                         continue
                     fi
                 fi
-                if [[ -r ${_BURP_BACKUP_DIR}/${_BURP_CLIENT}/current/log.gz ]]
+                if [[ -r "${_BURP_BACKUP_DIR}"/"${_BURP_CLIENT}"/current/log.gz ]]
                 then
-                    _BACKUP_WARNINGS=$(zcat ${_BURP_BACKUP_DIR}/${_BURP_CLIENT}/current/log.gz 2>/dev/null | grep -c "WARNING:" 2>/dev/null)
+                    _BACKUP_WARNINGS=$(zcat "${_BURP_BACKUP_DIR}"/"${_BURP_CLIENT}"/current/log.gz 2>/dev/null | grep -c "WARNING:" 2>/dev/null)
                 else
                     warn "could not find ${_BURP_BACKUP_DIR}/${_BURP_CLIENT}/current/log.gz"
                     continue
                 fi
                 ;;
             burp-1*)
-                _BACKUP_WARNINGS=$(${_BURP_BIN} -c ${_BURP_SERVER_CONFIG_FILE} -a S -C ${_BURP_CLIENT} -b ${_BACKUP_RUN} -z backup_stats 2>>${HC_STDERR_LOG} |\
+                _BACKUP_WARNINGS=$(${_BURP_BIN} -c ${_BURP_SERVER_CONFIG_FILE} -a S -C "${_BURP_CLIENT}" -b "${_BACKUP_RUN}" -z backup_stats 2>>"${HC_STDERR_LOG}" |\
                                     grep '^warnings' 2>/dev/null | cut -f2 -d':' 2>/dev/null)
                 ;;
         esac
@@ -325,16 +341,16 @@ do
         # save STDOUT
         if (( _STC > 0 ))
         then
-            print "=== ${_BURP_CLIENT}: ${_BACKUP_RUN} ===" >>${HC_STDOUT_LOG}
+            print "=== ${_BURP_CLIENT}: ${_BACKUP_RUN} ===" >>"${HC_STDOUT_LOG}"
             case "${_BURP_VERSION}" in
                 burp-2*)
-                    if [[ -r ${_BURP_BACKUP_DIR}/${_BURP_CLIENT}/current/log.gz ]]
+                    if [[ -r "${_BURP_BACKUP_DIR}"/"${_BURP_CLIENT}"/current/log.gz ]]
                     then
-                        zcat ${_BURP_BACKUP_DIR}/${_BURP_CLIENT}/current/log.gz >>${HC_STDOUT_LOG} 2>>${HC_STDERR_LOG}
+                        zcat "${_BURP_BACKUP_DIR}"/"${_BURP_CLIENT}"/current/log.gz >>"${HC_STDOUT_LOG}" 2>>"${HC_STDERR_LOG}"
                     fi
                     ;;
                 burp-1*)
-                    ${_BURP_BIN} -c ${_BURP_SERVER_CONFIG_FILE} -a S -C ${_BURP_CLIENT} -b ${_BACKUP_RUN} -z log.gz >>${HC_STDOUT_LOG} 2>>${HC_STDERR_LOG}
+                    ${_BURP_BIN} -c ${_BURP_SERVER_CONFIG_FILE} -a S -C "${_BURP_CLIENT}" -b "${_BACKUP_RUN}" -z log.gz >>"${HC_STDOUT_LOG}" 2>>"${HC_STDERR_LOG}"
                     ;;
             esac
         fi

opt/hc/lib/platform/linux/check_linux_dovecot_status.sh

@@ -0,0 +1,209 @@
+#!/usr/bin/env ksh
+#******************************************************************************
+# @(#) check_linux_dovecot_status.sh
+#******************************************************************************
+# @(#) Copyright (C) 2020 by KUDOS BVBA (info@kudos.be).  All rights reserved.
+#
+# This program is a free software; you can redistribute it and/or modify
+# it under the same terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details
+#******************************************************************************
+#
+# DOCUMENTATION (MAIN)
+# -----------------------------------------------------------------------------
+# @(#) MAIN: check_linux_dovecot_status
+# DOES: see _show_usage()
+# EXPECTS: n/a
+# REQUIRES: data_comma2space(), linux_get_init(), init_hc(), log_hc(), warn()
+#
+# @(#) HISTORY:
+# @(#) 2020-12-27: initial version [Patrick Van der Veken]
+# -----------------------------------------------------------------------------
+# DO NOT CHANGE THIS FILE UNLESS YOU KNOW WHAT YOU ARE DOING!
+#******************************************************************************
+
+# -----------------------------------------------------------------------------
+function check_linux_dovecot_status
+{
+# ------------------------- CONFIGURATION starts here -------------------------
+typeset _DOVECOT_INIT_SCRIPT="/etc/init.d/dovecot"
+typeset _DOVECOT_SYSTEMD_SERVICE="dovecot.service"
+typeset _VERSION="2020-12-27"                           # YYYY-MM-DD
+typeset _SUPPORTED_PLATFORMS="Linux"                    # uname -s match
+# ------------------------- CONFIGURATION ends here ---------------------------
+
+# set defaults
+(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set "${DEBUG_OPTS}"
+init_hc "$0" "${_SUPPORTED_PLATFORMS}" "${_VERSION}"
+typeset _ARGS=$(data_comma2space "$*")
+typeset _ARG=""
+typeset _DOVECOT_BIN=""
+typeset _DOVECOT_CHECKER=""
+typeset _MSG=""
+typeset _STC=0
+typeset _LOG_HEALTHY=0
+typeset _RC=0
+typeset _CHECK_SYSTEMD_SERVICE=0
+
+# handle arguments (originally comma-separated)
+for _ARG in ${_ARGS}
+do
+    case "${_ARG}" in
+        help)
+            _show_usage "$0" "${_VERSION}" "${_CONFIG_FILE}" && return 0
+            ;;
+    esac
+done
+
+# log_healthy
+(( ARG_LOG_HEALTHY > 0 )) && _LOG_HEALTHY=1
+if (( _LOG_HEALTHY > 0 ))
+then
+    if (( ARG_LOG > 0 ))
+    then
+        log "logging/showing passed health checks"
+    else
+        log "showing passed health checks (but not logging)"
+    fi
+else
+    log "not logging/showing passed health checks"
+fi
+
+#-------------------------------------------------------------------------------
+# process state
+
+# 1) try using the init ways
+linux_get_init
+case "${LINUX_INIT}" in
+    'systemd')
+        # Debian8/Ubuntu16 do not correctly report a unit file for dovecot,
+        # do not check for it and instead just query systemd service
+        linux_get_distro
+        if [[ "${LINUX_DISTRO}" = "Debian" ]] && (( ${LINUX_RELEASE%%.*} < 9 ))
+        then
+            _CHECK_SYSTEMD_SERVICE=1
+        elif [[ "${LINUX_DISTRO}" = "Ubuntu" ]] && (( ${LINUX_RELEASE%%.*} < 17 ))
+        then
+            _CHECK_SYSTEMD_SERVICE=1
+        else
+            _CHECK_SYSTEMD_SERVICE=$(linux_has_systemd_service "${_DOVECOT_SYSTEMD_SERVICE}")
+        fi
+        if (( _CHECK_SYSTEMD_SERVICE > 0 ))
+        then
+            systemctl --quiet is-active ${_DOVECOT_SYSTEMD_SERVICE} 2>>"${HC_STDERR_LOG}" || _STC=1
+        else
+            warn "systemd unit file not found {${_DOVECOT_SYSTEMD_SERVICE}}"
+            _RC=1
+        fi
+        ;;
+    'upstart')
+        warn "code for upstart managed systems not implemented, NOOP"
+        _RC=1
+        ;;
+    'sysv')
+        # check running SysV
+        if [[ -x ${_DOVECOT_INIT_SCRIPT} ]]
+        then
+            if (( $(${_DOVECOT_INIT_SCRIPT} status 2>>"${HC_STDERR_LOG}" | grep -c -i 'is running' 2>/dev/null) == 0 ))
+            then
+                _STC=1
+            fi
+        else
+            warn "sysv init script not found {${_DOVECOT_INIT_SCRIPT}}"
+            _RC=1
+        fi
+        ;;
+    *)
+        _RC=1
+        ;;
+esac
+
+# 2) try the dovecot way
+if (( _RC > 0 ))
+then
+    _DOVECOT_BIN="$(command -v dovecot 2>>${HC_STDERR_LOG})"
+    if [[ -x ${_DOVECOT_BIN} && -n "${_DOVECOT_BIN}" ]]
+    then
+        if (( $(${_DOVECOT_BIN} status 2>>"${HC_STDERR_LOG}" | grep -c -i 'is running' 2>/dev/null) == 0 ))
+        then
+            _RC=1
+        fi
+    else
+        warn "dovecot is not installed here"
+        return 1
+    fi
+fi
+
+# 3) try the pgrep way (note: old pgreps do not support '-c')
+if (( _RC > 0 ))
+then
+    (( $(pgrep -u dovecot 2>>"${HC_STDERR_LOG}" | wc -l 2>/dev/null) == 0 )) && _STC=1
+fi
+
+# evaluate results
+case ${_STC} in
+    0)
+        _MSG="dovecot is running"
+        ;;
+    1)
+        _MSG="dovecot is not running"
+        ;;
+    *)
+        _MSG="could not determine status of dovecot"
+        ;;
+esac
+if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+then
+    log_hc "$0" ${_STC} "${_MSG}"
+fi
+
+#-------------------------------------------------------------------------------
+# configuration state
+_DOVECOT_CHECKER="$(command -v doveconf 2>>${HC_STDERR_LOG})"
+if [[ -x ${_DOVECOT_CHECKER} && -n "${_DOVECOT_CHECKER}" ]]
+then
+    # dump configuration
+    ${_DOVECOT_CHECKER} -n >>"${HC_STDOUT_LOG}" 2>>"${HC_STDERR_LOG}"
+    # shellcheck disable=SC2181
+    if (( $? > 0 ))
+    then
+        _MSG="dovecot configuration files have syntax error(s) {${_DOVECOT_CHECKER} -n}"
+        _STC=1
+    else
+        _MSG="dovecot configuration files are syntactically correct"
+        _STC=0
+    fi
+    if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+    then
+        log_hc "$0" ${_STC} "${_MSG}"
+    fi
+else
+    warn "skipping syntax check (unable to find syntax check tool)"
+fi
+
+return 0
+}
+
+# -----------------------------------------------------------------------------
+function _show_usage
+{
+cat <<- EOT
+NAME        : $1
+VERSION     : $2
+PURPOSE     : Checks whether dovecot (mail system) is running and whether the
+              dovecot configuration files are syntactically correct
+LOG HEALTHY : Supported
+
+EOT
+
+return 0
+}
+
+#******************************************************************************
+# END of script
+#******************************************************************************

opt/hc/lib/platform/linux/check_linux_fetchmail_status.sh

@@ -0,0 +1,319 @@
+#!/usr/bin/env ksh
+#******************************************************************************
+# @(#) check_linux_fetchmail_status.sh
+#******************************************************************************
+# @(#) Copyright (C) 2020 by KUDOS BVBA (info@kudos.be).  All rights reserved.
+#
+# This program is a free software; you can redistribute it and/or modify
+# it under the same terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details
+#******************************************************************************
+#
+# DOCUMENTATION (MAIN)
+# -----------------------------------------------------------------------------
+# @(#) MAIN: check_linux_fetchmail_status
+# DOES: see _show_usage()
+# EXPECTS: n/a
+# REQUIRES: data_comma2space(), init_hc(), log_hc(), warn')
+#
+# @(#) HISTORY:
+# @(#) 2016-12-26: initial version [Patrick Van der Veken]
+# -----------------------------------------------------------------------------
+# DO NOT CHANGE THIS FILE UNLESS YOU KNOW WHAT YOU ARE DOING!
+#******************************************************************************
+
+# -----------------------------------------------------------------------------
+function check_linux_fetchmail_status
+{
+# ------------------------- CONFIGURATION starts here -------------------------
+typeset _CONFIG_FILE="${CONFIG_DIR}/$0.conf"
+typeset _VERSION="2020-12-26"                           # YYYY-MM-DD
+typeset _SUPPORTED_PLATFORMS="Linux"                    # uname -s match
+# ------------------------- CONFIGURATION ends here ---------------------------
+
+# set defaults
+(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set "${DEBUG_OPTS}"
+init_hc "$0" "${_SUPPORTED_PLATFORMS}" "${_VERSION}"
+typeset _ARGS=$(data_comma2space "$*")
+typeset _ARG=""
+typeset _MSG=""
+typeset _STC=0
+typeset _LOG_HEALTHY=0
+typeset _CFG_HEALTHY=""
+typeset _CFG_ERROR_REGEX=""
+typeset _ERROR_REGEX=""
+typeset _CFG_ACCOUNT=""
+typeset _CFG_RC_FILE=""
+typeset _CFG_CHECK_LOG=""
+typeset _OPENSSL_BIN=""
+typeset _MD5SUM_BIN=""
+typeset _HAS_OPENSSL=0
+typeset _HAS_MD5SUM=0
+typeset _USE_OPENSSL=0
+typeset _USE_MD5SUM=0
+typeset _DO_LOG=0
+typeset _LOG_FILE=""
+typeset _HASH_FILE_NAME=""
+typeset _STATE_FILE=""
+typeset _LAST_POINTER=""
+typeset _NEW_LAST_POINTER=""
+typeset _LOG_COUNT=""
+typeset _LINE_NR=""
+typeset _LINE_TEXT=""
+
+# handle arguments (originally comma-separated)
+for _ARG in ${_ARGS}
+do
+    case "${_ARG}" in
+        help)
+            _show_usage "$0" "${_VERSION}" "${_CONFIG_FILE}" && return 0
+            ;;
+    esac
+done
+
+# handle config file
+[[ -n "${ARG_CONFIG_FILE}" ]] && _CONFIG_FILE="${ARG_CONFIG_FILE}"
+if [[ ! -r ${_CONFIG_FILE} ]]
+then
+    warn "unable to read configuration file at ${_CONFIG_FILE}"
+    return 1
+fi
+# read required config values
+_CFG_ERROR_REGEX=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'error_regex')
+if [[ -n "${_CFG_ERROR_REGEX}" ]]
+then
+    _ERROR_REGEX="${_CFG_ERROR_REGEX}"
+else
+    _ERROR_REGEX="error|authfail|lockbusy|ioerr"
+    (( ARG_DEBUG > 0 )) && debug "setting error_regex to default value: ${_ERROR_REGEX}"
+fi
+_CFG_HEALTHY=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'log_healthy')
+case "${_CFG_HEALTHY}" in
+    yes|YES|Yes)
+        _LOG_HEALTHY=1
+        ;;
+    *)
+        # do not override hc_arg
+        (( _LOG_HEALTHY > 0 )) || _LOG_HEALTHY=0
+        ;;
+esac
+
+# log_healthy
+(( ARG_LOG_HEALTHY > 0 )) && _LOG_HEALTHY=1
+if (( _LOG_HEALTHY > 0 ))
+then
+    if (( ARG_LOG > 0 ))
+    then
+        log "logging/showing passed health checks"
+    else
+        log "showing passed health checks (but not logging)"
+    fi
+else
+    log "not logging/showing passed health checks"
+fi
+
+#-------------------------------------------------------------------------------
+# check for auxiliary tools
+_OPENSSL_BIN="$(command -v openssl 2>>${HC_STDERR_LOG})"
+[[ -x ${_OPENSSL_BIN} && -n "${_OPENSSL_BIN}" ]] && _HAS_OPENSSL=1
+_MD5SUM_BIN="$(command -v md5sum 2>>${HC_STDERR_LOG})"
+[[ -x ${_MD5SUM_BIN} && -n "${_MD5SUM_BIN}" ]] && _HAS_MD5SUM=1
+# prefer openssl
+if (( _HAS_OPENSSL == 1 ))
+then
+    _USE_OPENSSL=1
+elif (( _HAS_MD5SUM == 1 ))
+then
+    _USE_MD5SUM=1
+else
+    warn "unable to find the 'openssl/md5sum' tools, will not do fetchmail log checking"
+    return 1
+fi
+
+#-------------------------------------------------------------------------------
+# perform check(s)
+grep -E -e "^fetchmail:" "${_CONFIG_FILE}" 2>/dev/null | while IFS=":" read -r _ _CFG_ACCOUNT _CFG_RC_FILE _CFG_CHECK_LOG
+do
+    _STC=0
+
+    # check config
+    if [[ -z "${_CFG_ACCOUNT}" ]] && [[ -z "${_CFG_RC_FILE}" ]]
+    then
+        warn "missing values in configuration file at ${_CONFIG_FILE}"
+        return 1
+    fi
+
+    # check if account exists
+    id "${_CFG_ACCOUNT}" >/dev/null 2>/dev/null || {
+        warn "account ${_CFG_ACCOUNT} does not exist on host, skipping"
+        continue
+    }
+
+    # check if fetchmailrc file exists
+    [[ -r "${_CFG_RC_FILE}" ]] || {
+        warn "unable to read fetchmailrc file at ${_CFG_RC_FILE} for account ${_CFG_ACCOUNT}, skipping"
+        continue
+    }
+
+    # get process details
+    (( $(pgrep -u "${_CFG_ACCOUNT}" -f "fetchmail.*${_CFG_RC_FILE}" | wc -l 2>/dev/null) == 0 )) && _STC=1
+
+    # evaluate results
+    case ${_STC} in
+        0)
+            _MSG="fetchmail is running for account ${_CFG_ACCOUNT} (${_CFG_RC_FILE})"
+            ;;
+        1)
+            _MSG="fetchmail is not running for account ${_CFG_ACCOUNT} (${_CFG_RC_FILE})"
+            ;;
+        *)
+            _MSG="could not determine status of fetchmail for account ${_CFG_ACCOUNT} (${_CFG_RC_FILE})"
+            ;;
+    esac
+    if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+    then
+        log_hc "$0" ${_STC} "${_MSG}"
+    fi
+
+    # check log?
+    case "${_CFG_CHECK_LOG}" in
+        Yes|YES|yes)
+            (( ARG_DEBUG > 0 )) && debug "doing log check for account ${_CFG_ACCOUNT} (${_CFG_RC_FILE})"
+            _DO_LOG=1;
+            ;;
+        *)
+            log "skipping fetchmail log check for account ${_CFG_ACCOUNT} (${_CFG_RC_FILE})"
+            _DO_LOG=0;
+            ;;
+    esac
+
+    # check auxiliary tools
+    if (( _HAS_OPENSSL == 0 && _HAS_MD5SUM == 0 ))
+    then
+        warn "unable to find the 'openssl/md5sum' tools, will not do fetchmail log checking for account ${_CFG_ACCOUNT}"
+        _DO_LOG=0
+    fi
+
+    if (( _DO_LOG > 0 ))
+    then
+        (( ARG_DEBUG > 0 )) && debug "will do log check for account ${_CFG_ACCOUNT} [${_CFG_RC_FILE}]"
+        # get logfile statement in .fetchmailrc
+        _LOG_FILE=$(grep "^set logfile" "${_CFG_RC_FILE}" 2>/dev/null | awk '{ print $3 }' 2>/dev/null)
+        [[ -z "${_LOG_FILE}" ]] && {
+            warn "no fetchmail log file defined in fetchmailrc file at ${_CFG_RC_FILE} for account ${_CFG_ACCOUNT}, skipping log check"
+            continue
+        }
+        [[ -r "${_LOG_FILE}" ]] || {
+            warn "unable to read fetchmail log file at ${_LOG_FILE} for account ${_CFG_ACCOUNT}, skipping log check"
+            continue
+        }
+        (( ARG_DEBUG > 0 )) && debug "log file found at ${_LOG_FILE}"
+
+        # determine state file (we use a hashed file name based on the fetchmail log file full path
+        # to avoid globbing when account has the same name for multiple entries in the configuration file)
+        (( _USE_OPENSSL == 1 )) && \
+            _HASH_FILE_NAME=$(${_OPENSSL_BIN} dgst -md5 "${_LOG_FILE}" 2>>"${HC_STDERR_LOG}" | cut -f2 -d'=' 2>/dev/null | tr -d ' ' 2>/dev/null)
+        (( _USE_MD5SUM == 1 )) && \
+            _HASH_FILE_NAME=$(${_MD5SUM_BIN} dgst -md5 "${_LOG_FILE}" 2>>"${HC_STDERR_LOG}" | cut -f1 -d' ' 2>/dev/null)
+        if [[ -z "${_HASH_FILE_NAME}" ]]
+        then
+            warn "unable to determine log state file for account ${_CFG_ACCOUNT}, skipping log check"
+            continue
+        fi
+
+        # get log pointer from state file
+        _STATE_FILE="${STATE_PERM_DIR}/${_HASH_FILE_NAME}.fetchmail"
+        if [[ -r "${_STATE_FILE}" ]]
+        then
+            _LAST_POINTER=$(<"${_STATE_FILE}")
+        fi
+        if [[ -z "${_LAST_POINTER}" ]]
+        then
+            (( ARG_DEBUG > 0 )) && debug "could not determine last known log entry, resetting to 0"
+            _LAST_POINTER=0
+        else
+            (( ARG_DEBUG > 0 )) && debug "old _LAST_POINTER=${_LAST_POINTER}"
+        fi
+
+        # check last known vs current pointer
+        _LOG_COUNT=$(wc -l "${_LOG_FILE}" 2>/dev/null | cut -f1 -d' ')
+        (( ARG_DEBUG > 0 )) && debug "line count for current log: ${_LOG_COUNT}"
+        if (( _LOG_COUNT >= _LAST_POINTER ))
+        then
+            # find errors in later log lines
+            awk -F':' -v error_regex="${_ERROR_REGEX}" -v last_pointer=${_LAST_POINTER} '
+                {
+                    # find error lines which have a line count > last pointer
+                    if (NR > last_pointer && $0 ~ error_regex) {
+                        # cut fetchmail: prefix & replce possible pipes
+                        gsub(/^fetchmail: +/, "");
+                        gsub(/\|/, "_");
+                        # report issue with line number
+                        print $0 "|" NR;
+                    }
+                }' "${_LOG_FILE}" 2>/dev/null | while IFS="|" read -r _LINE_TEXT _LINE_NR
+            do
+                _MSG="found issue in ${_LOG_FILE}: ${_LINE_TEXT} (LINENO=${_LINE_NR})"
+                if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+                then
+                    log_hc "$0" 1 "${_MSG}"
+                fi
+                # update new last pointer
+                (( ARG_DEBUG > 0 )) && debug "updating _NEW_LAST_POINTER=${_LINE_NR}"
+                _NEW_LAST_POINTER=${_LINE_NR}
+            done
+        else
+            # log small has shrunk, assume it has been rotated, resetting pointer to zero
+            log "log file for account ${_CFG_ACCOUNT} seems to have been rotated, resetting log file pointer to 0"
+            _LAST_POINTER=0
+        fi
+
+        # update state file with new last pointer
+        if (( ARG_LOG > 0 ))
+        then
+            if [[ -n "${_NEW_LAST_POINTER}" ]] && (( _NEW_LAST_POINTER > _LAST_POINTER ))
+            then
+                _LAST_POINTER=${_NEW_LAST_POINTER}
+            fi
+            (( ARG_DEBUG > 0 )) && debug "new _LAST_POINTER=${_LAST_POINTER}"
+            print "${_LAST_POINTER}" >"${_STATE_FILE}"
+            # shellcheck disable=SC2181
+            if (( $? > 0 ))
+            then
+                warn "failed to update state file at ${_STATE_FILE}"
+                return 1
+            fi
+        fi
+    fi
+
+done
+
+return 0
+}
+
+# -----------------------------------------------------------------------------
+function _show_usage
+{
+cat <<- EOT
+NAME        : $1
+VERSION     : $2
+CONFIG      : $3 with parameters:
+                log_healthy=<yes|no>
+              and formatted stanzas:
+                fetchmail:<account>:<rc_file>:<check_log=Yes|No>
+PURPOSE     : Checks the status of local fetchmail services (process & log).
+              Fetchmail should be configured to run in daemon mode.
+LOG HEALTHY : Supported
+EOT
+
+return 0
+}
+
+#******************************************************************************
+# END of script
+#******************************************************************************

opt/hc/lib/platform/linux/check_linux_file_change.sh

@@ -31,6 +31,7 @@
 # @(#) 2019-03-09: added support for --log-healthy [Patrick Van der Veken]
 # @(#) 2019-03-16: replace 'which' [Patrick Van der Veken]
 # @(#) 2020-09-05: fix log_hc call for failed checksum + quote fix [Patrick Van der Veken]
+# @(#) 2021-01-13: fix log_hc call (wrong logic) [Patrick Van der Veken]
 # -----------------------------------------------------------------------------
 # DO NOT CHANGE THIS FILE UNLESS YOU KNOW WHAT YOU ARE DOING!
 #******************************************************************************
@@ -40,7 +41,7 @@ function check_linux_file_change
 {
 # ------------------------- CONFIGURATION starts here -------------------------
 typeset _CONFIG_FILE="${CONFIG_DIR}/$0.conf"
-typeset _VERSION="2020-09-05"                           # YYYY-MM-DD
+typeset _VERSION="2021-01-13"                           # YYYY-MM-DD
 typeset _SUPPORTED_PLATFORMS="Linux"                    # uname -s match
 # ------------------------- CONFIGURATION ends here ---------------------------
 
@@ -323,7 +324,7 @@ do
     fi
 
     # bounce failures back and jump to next file
-    if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+    if (( _LOG_HEALTHY > 0 && _STC > 0 ))
     then
         log_hc "$0" ${_STC} "${_MSG}"
         continue

opt/hc/lib/platform/linux/check_linux_hpacucli.sh

@@ -29,6 +29,7 @@
 # @(#) 2019-01-24: arguments fix [Patrick Van der Veken]
 # @(#) 2019-03-09: added code for data_is_numeric() & support for
 # @(#)             --log-healthy [Patrick Van der Veken]
+# @(#) 2020-02-03: made slot num detection smarter [Patrick Van der Veken]
 # -----------------------------------------------------------------------------
 # DO NOT CHANGE THIS FILE UNLESS YOU KNOW WHAT YOU ARE DOING!
 #******************************************************************************
@@ -38,7 +39,7 @@ function check_linux_hpacucli
 {
 # ------------------------- CONFIGURATION starts here -------------------------
 typeset _CONFIG_FILE="${CONFIG_DIR}/$0.conf"
-typeset _VERSION="2019-03-09"                           # YYYY-MM-DD
+typeset _VERSION="2020-02-03"                           # YYYY-MM-DD
 typeset _SUPPORTED_PLATFORMS="Linux"                    # uname -s match
 # ------------------------- CONFIGURATION ends here ---------------------------
 
@@ -193,7 +194,7 @@ then
     # get all slot numbers for multiple raid controllers
     cat ${_TMP_FILE} | grep "in Slot [0-9]" 2>/dev/null | while read _ACU_LINE
     do
-        _SLOT_NUM="$(print ${_ACU_LINE} | cut -f6 -d' ' 2>/dev/null)"
+        _SLOT_NUM="$(print ${_ACU_LINE} | sed 's/.*in Slot \([0-9][0-9]*\).*/\1/' 2>/dev/null)"
         data_is_numeric "${_SLOT_NUM}"
         if (( $? == 0 ))
         then

opt/hc/lib/platform/linux/check_linux_hpssacli.sh

@@ -29,6 +29,8 @@
 # @(#) 2019-01-24: arguments fix [Patrick Van der Veken]
 # @(#) 2019-03-09: added code for data_is_numeric() & support for
 # @(#)             --log-healthy [Patrick Van der Veken]
+# @(#) 2020-02-03: made slot num detection smarter + fixed error in reporting
+# @(#)             when no problems [Patrick Van der Veken]
 # -----------------------------------------------------------------------------
 # DO NOT CHANGE THIS FILE UNLESS YOU KNOW WHAT YOU ARE DOING!
 #******************************************************************************
@@ -38,7 +40,7 @@ function check_linux_hpssacli
 {
 # ------------------------- CONFIGURATION starts here -------------------------
 typeset _CONFIG_FILE="${CONFIG_DIR}/$0.conf"
-typeset _VERSION="2019-03-09"                           # YYYY-MM-DD
+typeset _VERSION="2020-02-03"                           # YYYY-MM-DD
 typeset _SUPPORTED_PLATFORMS="Linux"                    # uname -s match
 # ------------------------- CONFIGURATION ends here ---------------------------
 
@@ -193,7 +195,7 @@ then
     # get all slot numbers for multiple raid controllers
     cat ${_TMP_FILE} | grep "in Slot [0-9]" 2>/dev/null | while read _SSA_LINE
     do
-        _SLOT_NUM="$(print ${_SSA_LINE} | cut -f6 -d' ' 2>/dev/null)"
+        _SLOT_NUM="$(print ${_SSA_LINE} | sed 's/.*in Slot \([0-9][0-9]*\).*/\1/' 2>/dev/null)"
         data_is_numeric "${_SLOT_NUM}"
         if (( $? == 0 ))
         then
@@ -279,7 +281,7 @@ else
 fi
 
 # report OK situation
-if (( _LOG_HEALTHY > 0 && _STC_COUNT > 0 ))
+if (( _LOG_HEALTHY > 0 && _STC_COUNT == 0 ))
 then
     _MSG="no problems detected by {${_HPSSACLI_BIN}}"
     log_hc "$0" 0 "${_MSG}"

opt/hc/lib/platform/linux/check_linux_ntp_status.sh

@@ -35,6 +35,9 @@
 # @(#)             fixed problem with offset calculation [Patrick Van der Veken]
 # @(#) 2019-01-24: arguments fix [Patrick Van der Veken]
 # @(#) 2019-03-24: set dynamic path to client tools [Patrick Van der Veken]
+# @(#) 2020-12-21: fixes for --log-healthy [Patrick Van der Veken]
+# @(#) 2022-01-30: added support for systemd-timesyncd, new force_systemd 
+# @(#)             configuration parameter [Patrick Van der Veken]
 # -----------------------------------------------------------------------------
 # DO NOT CHANGE THIS FILE UNLESS YOU KNOW WHAT YOU ARE DOING!
 #------------------------------------------------------------------------------
@@ -50,13 +53,13 @@ typeset _CHRONYD_SYSTEMD_SERVICE="chronyd.service"
 typeset _NTPD_SYSTEMD_SERVICE="ntpd.service"
 typeset _CHRONYD_USER="chrony"
 typeset _NTPD_USER="ntp"
-typeset _VERSION="2019-03-24"                           # YYYY-MM-DD
+typeset _VERSION="2022-01-30"                           # YYYY-MM-DD
 typeset _SUPPORTED_PLATFORMS="Linux"                    # uname -s match
 typeset _NTPQ_OPTS="-pn"
 # ------------------------- CONFIGURATION ends here ---------------------------
 
 # set defaults
-(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set ${DEBUG_OPTS}
+(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set "${DEBUG_OPTS}"
 init_hc "$0" "${_SUPPORTED_PLATFORMS}" "${_VERSION}"
 typeset _ARGS=$(data_comma2space "$*")
 typeset _ARG=""
@@ -74,15 +77,18 @@ typeset _NTP_PEER=""
 typeset _CHECK_OFFSET=0
 typeset _USE_CHRONYD=0
 typeset _USE_NTPD=0
+typeset _USE_SYSTEMD=0
 typeset _CHRONYC_BIN=""
 typeset _NTPQ_BIN=""
+typeset _TIMEDATECTL_BIN=""
+typeset _IS_SYNCHRONIZED=0
 
 # handle arguments (originally comma-separated)
 for _ARG in ${_ARGS}
 do
     case "${_ARG}" in
         help)
-            _show_usage $0 ${_VERSION} ${_CONFIG_FILE} && return 0
+            _show_usage "$0" "${_VERSION}" "${_CONFIG_FILE}" && return 0
             ;;
         force_chrony)
             log "forcing chrony since force_chrony was used"
@@ -92,6 +98,10 @@ do
             log "forcing ntp since force_ntp was used"
             _USE_NTPD=1
             ;;
+        force_systemd)
+            log "forcing systemd-timesyncd since force_systemd was used"
+            _USE_SYSTEMD=1
+            ;;           
     esac
 done
 
@@ -140,6 +150,17 @@ case "${_CFG_FORCE_NTP}" in
         :   # not set
         ;;
 esac
+# force_systemd (optional)
+_CFG_FORCE_SYSTEMD=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'force_systemd')
+case "${_CFG_FORCE_SYSTEMD}" in
+    yes|YES|Yes)
+        log "forcing systemd-timesyncd since force_systemd was set"
+        _USE_SYSTEMD=1
+        ;;
+    *)
+        :   # not set
+        ;;
+esac
 _CFG_NTPQ_IPV4=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'ntpq_use_ipv4')
 case "${_CFG_NTPQ_IPV4}" in
     yes|YES|Yes)
@@ -155,6 +176,16 @@ then
     warn "you cannot force chrony and ntp at the same time"
     return 1
 fi
+if (( _USE_CHRONYD > 0 && _USE_SYSTEMD > 0 ))
+then
+    warn "you cannot force chrony and systemd at the same time"
+    return 1
+fi
+if (( _USE_NTPD > 0 && _USE_SYSTEMD > 0 ))
+then
+    warn "you cannot force ntp and systemd at the same time"
+    return 1
+fi
 
 # log_healthy
 (( ARG_LOG_HEALTHY > 0 )) && _LOG_HEALTHY=1
@@ -172,19 +203,17 @@ fi
 
 #------------------------------------------------------------------------------
 # check for client tools
-_CHRONYC_BIN="$(command -v chronyc 2>>${HC_STDERR_LOG})"
-
-
-_NTPQ_BIN="$(command -v ntpq 2>>${HC_STDERR_LOG})"
-
+_CHRONYC_BIN=$(command -v chronyc 2>>"${HC_STDERR_LOG}")
+_NTPQ_BIN=$(command -v ntpq 2>>"${HC_STDERR_LOG}")
+_TIMEDATECTL_BIN=$(command -v timedatectl 2>>"${HC_STDERR_LOG}")
 
 #------------------------------------------------------------------------------
 # chronyd (prefer) or ntpd (fallback)
-# but do not check if _USE_CHRONYD or _USE_NTPD is already set
-if (( _USE_CHRONYD == 0 && _USE_NTPD == 0 ))
+# but do not check if _USE_CHRONYD, _USE_NTPD or _USE_SYSTEMD is already set
+if (( _USE_CHRONYD == 0 && _USE_NTPD == 0 && _USE_SYSTEMD == 0 ))
 then
     linux_get_init
-    _CHRONYC_BIN="$(command -v chronyc 2>>${HC_STDERR_LOG})"
+    _CHRONYC_BIN=$(command -v chronyc 2>>"${HC_STDERR_LOG}")
     if [[ -n "${_CHRONYC_BIN}" && -x ${_CHRONYC_BIN} ]]
     then
         # check that chrony is actually enabled
@@ -194,14 +223,15 @@ then
                 _CHECK_SYSTEMD_SERVICE=$(linux_has_systemd_service "${_CHRONYD_SYSTEMD_SERVICE}")
                 if (( _CHECK_SYSTEMD_SERVICE > 0 ))
                 then
-                    systemctl --quiet is-enabled ${_CHRONYD_SYSTEMD_SERVICE} 2>>${HC_STDERR_LOG} && _USE_CHRONYD=1
+                    systemctl --quiet is-enabled ${_CHRONYD_SYSTEMD_SERVICE} 2>>"${HC_STDERR_LOG}" && _USE_CHRONYD=1
                 else
                     warn "systemd unit file not found {${_CHRONYD_SYSTEMD_SERVICE}}"
                     _USE_CHRONYD=0
                 fi
                 ;;
             'sysv')
-                chkconfig chronyd >>${HC_STDOUT_LOG} 2>>${HC_STDERR_LOG}
+                chkconfig chronyd >>"${HC_STDOUT_LOG}" 2>>"${HC_STDERR_LOG}"
+                # shellcheck disable=SC2181
                 if (( $? == 0 ))
                 then
                     _USE_CHRONYD=1
@@ -215,14 +245,14 @@ then
         esac
         (( ARG_DEBUG > 0 )) && debug "chronyd service state: ${_USE_CHRONYD}"
     fi
-    _NTPQ_BIN="$(command -v ntpq 2>>${HC_STDERR_LOG})"
+    _NTPQ_BIN=$(command -v ntpq 2>>"${HC_STDERR_LOG}")
     if (( _USE_CHRONYD == 0 )) && [[ -n "${_NTPQ_BIN}" && -x ${_NTPQ_BIN} ]]
     then
         # shellcheck disable=SC2034
         _USE_NTPD=1
         (( ARG_DEBUG > 0 )) && debug "ntpd service state: ${_USE_NTPD}"
     fi
-    if (( _USE_CHRONYD == 0 && _USE_NTPD == 0 ))
+    if (( _USE_CHRONYD == 0 && _USE_NTPD == 0 && _USE_SYSTEMD == 0 ))
     then
         _MSG="unable to find chronyd or ntpd (or they are not enabled)"
         log_hc "$0" 1 "${_MSG}"
@@ -233,10 +263,12 @@ then
 fi
 
 #------------------------------------------------------------------------------
-# check ntp service
-# 1) try using the init ways
-linux_get_init
-case "${LINUX_INIT}" in
+# check ntp service (unless _USE_SYSTEMD is explicitly set)
+if (( _USE_SYSTEMD == 0 ))
+then
+    # 1) try using the init ways
+    linux_get_init
+    case "${LINUX_INIT}" in
         'systemd')
             if (( _USE_CHRONYD > 0 ))
             then
@@ -269,7 +301,7 @@ case "${LINUX_INIT}" in
             then
                 if [[ -x ${_CHRONY_INIT_SCRIPT} ]]
                 then
-                if (( $(${_CHRONY_INIT_SCRIPT} status 2>>${HC_STDERR_LOG} | grep -c -i 'is running' 2>/dev/null) == 0 ))
+                    if (( $(${_CHRONY_INIT_SCRIPT} status 2>>"${HC_STDERR_LOG}" | grep -c -i 'is running' 2>/dev/null) == 0 ))
                     then
                         _STC=1
                     fi
@@ -280,7 +312,7 @@ case "${LINUX_INIT}" in
             else
                 if [[ -x ${_NTPD_INIT_SCRIPT} ]]
                 then
-                if (( $(${_NTPD_INIT_SCRIPT} status 2>>${HC_STDERR_LOG} | grep -c -i 'is running' 2>/dev/null) == 0 ))
+                    if (( $(${_NTPD_INIT_SCRIPT} status 2>>"${HC_STDERR_LOG}" | grep -c -i 'is running' 2>/dev/null) == 0 ))
                     then
                         _STC=1
                     fi
@@ -293,21 +325,21 @@ case "${LINUX_INIT}" in
         *)
             _RC=1
             ;;
-esac
+    esac
 
-# 2) try the pgrep way (note: old pgreps do not support '-c')
-if (( _RC > 0 ))
-then
+    # 2) try the pgrep way (note: old pgreps do not support '-c')
+    if (( _RC > 0 ))
+    then
         if (( _USE_CHRONYD > 0 ))
         then
-        (( $(pgrep -u "${_CHRONYD_USER}" 'chronyd' 2>>${HC_STDERR_LOG} | wc -l 2>/dev/null) == 0 )) && _STC=1
+            (( $(pgrep -u "${_CHRONYD_USER}" 'chronyd' 2>>"${HC_STDERR_LOG}" | wc -l 2>/dev/null) == 0 )) && _STC=1
         else
-        (( $(pgrep -u "${_NTPD_USER}" 'ntpd' 2>>${HC_STDERR_LOG} | wc -l 2>/dev/null) == 0 )) && _STC=1
+            (( $(pgrep -u "${_NTPD_USER}" 'ntpd' 2>>"${HC_STDERR_LOG}" | wc -l 2>/dev/null) == 0 )) && _STC=1
+        fi
         fi
-fi
 
-# evaluate results
-case ${_STC} in
+    # evaluate results
+    case ${_STC} in
         0)
             if (( _USE_CHRONYD > 0 ))
             then
@@ -332,15 +364,18 @@ case ${_STC} in
                 _MSG="could not determine status of ntpd"
             fi
             ;;
-esac
-log_hc "$0" ${_STC} "${_MSG}"
+    esac
+    if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+    then
+        log_hc "$0" ${_STC} "${_MSG}"
+    fi
 
-#------------------------------------------------------------------------------
-# check chronyc/ntpq results
-_STC=0
-if (( _USE_CHRONYD > 0 ))
-then
-    ${_CHRONYC_BIN} -nc sources 2>>${HC_STDERR_LOG} >>${HC_STDOUT_LOG}
+    # check chronyc/ntpq results
+    _STC=0
+    if (( _USE_CHRONYD > 0 ))
+    then
+        ${_CHRONYC_BIN} -nc sources 2>>"${HC_STDERR_LOG}" >>"${HC_STDOUT_LOG}"
+        # shellcheck disable=SC2181
         if (( $? > 0 ))
         then
             _MSG="unable to execute {${_CHRONYC_BIN}}"
@@ -368,7 +403,10 @@ then
                 _MSG="chrony is synchronizing against ${_CHRONY_PEER}"
                 ;;
         esac
+        if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+        then
             log_hc "$0" ${_STC} "${_MSG}"
+        fi
 
         # 2) offset value
         if (( _STC == 0 ))
@@ -380,6 +418,7 @@ then
                     # numeric, OK (negatives are OK too!)
                     # convert from us to ms
                     _CURR_OFFSET=$(print -R "${_CURR_OFFSET} * 1000" | bc 2>/dev/null)
+                    # shellcheck disable=SC2181
                     if (( $? > 0 )) || [[ -z "${_CURR_OFFSET}" ]]
                     then
                         :
@@ -393,7 +432,10 @@ then
                     else
                         _MSG="NTP offset of ${_CURR_OFFSET} is within the acceptable range"
                     fi
+                    if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+                    then
                         log_hc "$0" ${_STC} "${_MSG}"
+                    fi
                     ;;
                 *)
                     # not numeric
@@ -402,9 +444,8 @@ then
                     ;;
             esac
         fi
-
-else
-    ${_NTPQ_BIN} ${_NTPQ_OPTS} 2>>${HC_STDERR_LOG} >>${HC_STDOUT_LOG}
+    else
+        ${_NTPQ_BIN} ${_NTPQ_OPTS} 2>>"${HC_STDERR_LOG}" >>"${HC_STDOUT_LOG}"
         # RC is always 0
 
         # 1) active server
@@ -425,7 +466,10 @@ else
                 _MSG="NTP is synchronizing against ${_NTP_PEER##*\*}"
                 ;;
         esac
+        if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+        then
             log_hc "$0" ${_STC} "${_MSG}"
+        fi
 
         # 2) offset value
         if (( _STC == 0 ))
@@ -442,7 +486,10 @@ else
                     else
                         _MSG="NTP offset of ${_CURR_OFFSET} is within the acceptable range"
                     fi
+                    if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+                    then
                         log_hc "$0" ${_STC} "${_MSG}"
+                    fi
                     ;;
                 *)
                     # not numeric
@@ -451,6 +498,54 @@ else
                     ;;
             esac
         fi
+    fi
+fi
+
+#------------------------------------------------------------------------------
+# check systemd-timesyncd results
+_STC=0
+if (( _USE_SYSTEMD > 0 ))
+then
+    ${_TIMEDATECTL_BIN} show 2>"${HC_STDERR_LOG}" >"${HC_STDOUT_LOG}"
+    # shellcheck disable=SC2181
+    if (( $? > 0 ))
+    then
+        _MSG="unable to execute {${_TIMEDATECTL_BIN}}"
+        log_hc "$0" 1 "${_MSG}"
+        # dump debug info
+        (( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && dump_logs
+        return 1
+    fi
+
+    # check if NTP is active
+    _STC=0
+    _IS_ACTIVE=$(grep -c "^NTP=yes" "${HC_STDOUT_LOG}" 2>/dev/null)
+    if (( _IS_ACTIVE == 0 ))
+    then
+        _MSG="NTP is not synchronizing"
+         _STC=1
+    else
+        _MSG="NTP is synchronizing"
+    fi
+    if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+    then
+        log_hc "$0" ${_STC} "${_MSG}"
+    fi
+
+    # check if clock is synchronized
+    _STC=0
+    _IS_SYNCHRONIZED=$(grep -c "^NTPSynchronized=yes" "${HC_STDOUT_LOG}" 2>/dev/null)
+    if (( _IS_SYNCHRONIZED == 0 ))
+    then
+        _MSG="NTP is not synchronizing"
+         _STC=1
+    else
+        _MSG="NTP is synchronizing"
+    fi
+    if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+    then
+        log_hc "$0" ${_STC} "${_MSG}"
+    fi
 fi
 
 return 0
@@ -467,10 +562,11 @@ CONFIG      : $3 with:
                max_offset=<max_offset (ms)>
                force_chrony=<yes|no>
                force_ntp=<yes|no>
+               force_systemd=<yes|no>
                ntpq_use_ipv4=<yes|no>
-EXTRA OPTS  : --hc-args=force_chrony, --hc-args=force_ntp
+EXTRA OPTS  : --hc-args=force_chrony, --hc-args=force_ntp, --hc-args=force_systemd
 PURPOSE     : Checks the status of NTP service & synchronization.
-                Supports chronyd & ntpd.
+                Supports chronyd, ntpd & systemd-timesyncd
                 Assumes chronyd is the preferred time synchronization.
 LOG HEALTHY : Supported
 

opt/hc/lib/platform/linux/check_linux_postfix_status.sh

@@ -19,7 +19,7 @@
 # @(#) MAIN: check_linux_postfix_status
 # DOES: see _show_usage()
 # EXPECTS: n/a
-# REQUIRES: data_comma2space(), linux_get_init(), init_hc(), log_hc(), warn')
+# REQUIRES: data_comma2space(), linux_get_init(), init_hc(), log_hc(), warn()
 #
 # @(#) HISTORY:
 # @(#) 2016-12-01: initial version [Patrick Van der Veken]
@@ -32,6 +32,7 @@
 # @(#) 2019-03-16: replace 'which' [Patrick Van der Veken]
 # @(#) 2019-03-25: fix for older Debian & Ubuntu [Patrick Van der Veken]
 # @(#) 2020-05-08: add pgrep als fallback check [Patrick Van der Veken]
+# @(#) 2020-12-27: add configuration check + quoting fixes [Patrick Van der Veken]
 # -----------------------------------------------------------------------------
 # DO NOT CHANGE THIS FILE UNLESS YOU KNOW WHAT YOU ARE DOING!
 #******************************************************************************
@@ -42,16 +43,17 @@ function check_linux_postfix_status
 # ------------------------- CONFIGURATION starts here -------------------------
 typeset _POSTFIX_INIT_SCRIPT="/etc/init.d/postfix"
 typeset _POSTFIX_SYSTEMD_SERVICE="postfix.service"
-typeset _VERSION="2020-05-08"                           # YYYY-MM-DD
+typeset _VERSION="2020-12-27"                           # YYYY-MM-DD
 typeset _SUPPORTED_PLATFORMS="Linux"                    # uname -s match
 # ------------------------- CONFIGURATION ends here ---------------------------
 
 # set defaults
-(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set ${DEBUG_OPTS}
+(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set "${DEBUG_OPTS}"
 init_hc "$0" "${_SUPPORTED_PLATFORMS}" "${_VERSION}"
 typeset _ARGS=$(data_comma2space "$*")
 typeset _ARG=""
 typeset _POSTFIX_BIN=""
+typeset _POSTFIX_CHECKER=""
 typeset _MSG=""
 typeset _STC=0
 typeset _LOG_HEALTHY=0
@@ -63,7 +65,7 @@ for _ARG in ${_ARGS}
 do
     case "${_ARG}" in
         help)
-            _show_usage $0 ${_VERSION} ${_CONFIG_FILE} && return 0
+            _show_usage "$0" "${_VERSION}" "${_CONFIG_FILE}" && return 0
             ;;
     esac
 done
@@ -82,6 +84,9 @@ else
     log "not logging/showing passed health checks"
 fi
 
+#-------------------------------------------------------------------------------
+# process state
+
 # 1) try using the init ways
 linux_get_init
 case "${LINUX_INIT}" in
@@ -100,7 +105,7 @@ case "${LINUX_INIT}" in
         fi
         if (( _CHECK_SYSTEMD_SERVICE > 0 ))
         then
-            systemctl --quiet is-active ${_POSTFIX_SYSTEMD_SERVICE} 2>>${HC_STDERR_LOG} || _STC=1
+            systemctl --quiet is-active ${_POSTFIX_SYSTEMD_SERVICE} 2>>"${HC_STDERR_LOG}" || _STC=1
         else
             warn "systemd unit file not found {${_POSTFIX_SYSTEMD_SERVICE}}"
             _RC=1
@@ -114,7 +119,7 @@ case "${LINUX_INIT}" in
         # check running SysV
         if [[ -x ${_POSTFIX_INIT_SCRIPT} ]]
         then
-            if (( $(${_POSTFIX_INIT_SCRIPT} status 2>>${HC_STDERR_LOG} | grep -c -i 'is running' 2>/dev/null) == 0 ))
+            if (( $(${_POSTFIX_INIT_SCRIPT} status 2>>"${HC_STDERR_LOG}" | grep -c -i 'is running' 2>/dev/null) == 0 ))
             then
                 _STC=1
             fi
@@ -134,10 +139,9 @@ then
     _POSTFIX_BIN="$(command -v postfix 2>>${HC_STDERR_LOG})"
     if [[ -x ${_POSTFIX_BIN} && -n "${_POSTFIX_BIN}" ]]
     then
-        if (( $(${_POSTFIX_BIN} status 2>>${HC_STDERR_LOG} | grep -c -i 'is running' 2>/dev/null) == 0 ))
+        if (( $(${_POSTFIX_BIN} status 2>>"${HC_STDERR_LOG}" | grep -c -i 'is running' 2>/dev/null) == 0 ))
         then
             _RC=1
-
         fi
     else
         warn "postfix is not installed here"
@@ -148,7 +152,7 @@ fi
 # 3) try the pgrep way (note: old pgreps do not support '-c')
 if (( _RC > 0 ))
 then
-    (( $(pgrep -u postfix pickup 2>>${HC_STDERR_LOG} | wc -l 2>/dev/null) == 0 )) && _STC=1
+    (( $(pgrep -u postfix pickup 2>>"${HC_STDERR_LOG}" | wc -l 2>/dev/null) == 0 )) && _STC=1
 fi
 
 # evaluate results
@@ -168,6 +172,30 @@ then
     log_hc "$0" ${_STC} "${_MSG}"
 fi
 
+#-------------------------------------------------------------------------------
+# configuration state
+_POSTFIX_CHECKER="$(command -v postconf 2>>${HC_STDERR_LOG})"
+if [[ -x ${_POSTFIX_CHECKER} && -n "${_POSTFIX_CHECKER}" ]]
+then
+    # dump configuration
+    ${_POSTFIX_CHECKER} -n >>"${HC_STDOUT_LOG}" 2>>"${HC_STDERR_LOG}"
+    # shellcheck disable=SC2181
+    if (( $? > 0 ))
+    then
+        _MSG="postfix configuration files have syntax error(s) {${_POSTFIX_CHECKER} -n}"
+        _STC=1
+    else
+        _MSG="postfix configuration files are syntactically correct"
+        _STC=0
+    fi
+    if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+    then
+        log_hc "$0" ${_STC} "${_MSG}"
+    fi
+else
+    warn "skipping syntax check (unable to find syntax check tool)"
+fi
+
 return 0
 }
 
@@ -177,7 +205,8 @@ function _show_usage
 cat <<- EOT
 NAME        : $1
 VERSION     : $2
-PURPOSE     : Checks whether postfix (mail system) is running
+PURPOSE     : Checks whether postfix (mail system) is running and whether the
+              postfix configuration files are syntactically correct
 LOG HEALTHY : Supported
 
 EOT

opt/hc/lib/platform/linux/check_linux_uptime.sh

@@ -0,0 +1,313 @@
+#!/usr/bin/env ksh
+#------------------------------------------------------------------------------
+# @(#) check_linux_uptime
+#------------------------------------------------------------------------------
+# @(#) Copyright (C) 2020 by KUDOS BVBA (info@kudos.be).  All rights reserved.
+#
+# This program is a free software; you can redistribute it and/or modify
+# it under the same terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details
+#------------------------------------------------------------------------------
+#
+# DOCUMENTATION (MAIN)
+# -----------------------------------------------------------------------------
+# @(#) MAIN: check_linux_uptime
+# DOES: see _show_usage()
+# EXPECTS: see _show_usage()
+# REQUIRES: data_is_numeric(), data_timestring_to_mins(), data_comma2space(),
+#           init_hc(), log_hc(), warn()
+#
+# @(#) HISTORY:
+# @(#) 2020-12-21: initial version [Patrick Van der Veken]
+# -----------------------------------------------------------------------------
+# DO NOT CHANGE THIS FILE UNLESS YOU KNOW WHAT YOU ARE DOING!
+#------------------------------------------------------------------------------
+
+# -----------------------------------------------------------------------------
+function check_linux_uptime
+{
+# ------------------------- CONFIGURATION starts here -------------------------
+typeset _CONFIG_FILE="${CONFIG_DIR}/$0.conf"
+typeset _STATE_FILE="${STATE_PERM_DIR}/current.uptime"
+typeset _VERSION="2020-12-21"                           # YYYY-MM-DD
+typeset _SUPPORTED_PLATFORMS="Linux"                    # uname -s match
+# ------------------------- CONFIGURATION ends here ---------------------------
+
+# set defaults
+(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set "${DEBUG_OPTS}"
+init_hc "$0" "${_SUPPORTED_PLATFORMS}" "${_VERSION}"
+typeset _ARGS=$(data_comma2space "$*")
+typeset _ARG=""
+typeset _MSG=""
+typeset _STC=0
+typeset _LOG_HEALTHY=0
+typeset _CFG_HEALTHY=
+typeset _CFG_CHECK_REBOOT=""
+typeset _CFG_REBOOT_TIME=""
+typeset _CFG_CHECK_OLD_AGE=""
+typeset _CFG_OLD_AGE_TIME=""
+typeset _CHECK_REBOOT=""
+typeset _REBOOT_TIME=""
+typeset _REBOOT_TIME_MINS=""
+typeset _CHECK_OLD_AGE=""
+typeset _OLD_AGE_TIME=""
+typeset _OLD_AGE_TIME_MINS=""
+typeset _CURRENT_UPTIME=""
+typeset _CURRENT_UPTIME_MINS=""
+typeset _PREVIOUS_UPTIME=""
+typeset _PREVIOUS_UPTIME_MINS=""
+typeset _THRESHOLD_UPTIME_MINS=""
+
+# handle arguments (originally comma-separated)
+for _ARG in ${_ARGS}
+do
+    case "${_ARG}" in
+        help)
+            _show_usage "$0" "${_VERSION}" "${_CONFIG_FILE}" && return 0
+            ;;
+    esac
+done
+
+# handle config file
+[[ -n "${ARG_CONFIG_FILE}" ]] && _CONFIG_FILE="${ARG_CONFIG_FILE}"
+if [[ ! -r ${_CONFIG_FILE} ]]
+then
+    warn "unable to read configuration file at ${_CONFIG_FILE}"
+    return 1
+fi
+# read required config values
+_CFG_HEALTHY=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'log_healthy')
+case "${_CFG_HEALTHY}" in
+    yes|YES|Yes)
+        _LOG_HEALTHY=1
+        ;;
+    *)
+        # do not override hc_arg
+        (( _LOG_HEALTHY > 0 )) || _LOG_HEALTHY=0
+        ;;
+esac
+_CFG_CHECK_REBOOT=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'check_reboot')
+case "${_CFG_CHECK_REBOOT}" in
+    no|No|NO)
+        _CHECK_REBOOT=0
+        ;;
+    *)
+        _CHECK_REBOOT=1
+        ;;
+esac
+_CFG_REBOOT_TIME=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'reboot_time')
+if [[ -z "${_CFG_REBOOT_TIME}" ]]
+then
+    # default
+    _REBOOT_TIME="60m"
+else
+    _REBOOT_TIME="${_CFG_REBOOT_TIME}"
+fi
+_CFG_CHECK_OLD_AGE=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'check_old_age')
+case "${_CFG_CHECK_OLD_AGE}" in
+    yes|Yes|Yes)
+        _CHECK_OLD_AGE=1
+        ;;
+    *)
+        _CHECK_OLD_AGE=0
+        ;;
+esac
+_CFG_OLD_AGE_TIME=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'old_age_time')
+if [[ -z "${_CFG_OLD_AGE_TIME}" ]]
+then
+    # default
+    _OLD_AGE_TIME="365d"
+else
+    _OLD_AGE_TIME="${_CFG_OLD_AGE_TIME}"
+fi
+
+# log_healthy
+(( ARG_LOG_HEALTHY > 0 )) && _LOG_HEALTHY=1
+if (( _LOG_HEALTHY > 0 ))
+then
+    if (( ARG_LOG > 0 ))
+    then
+        log "logging/showing passed health checks"
+    else
+        log "showing passed health checks (but not logging)"
+    fi
+else
+    log "not logging/showing passed health checks"
+fi
+
+#------------------------------------------------------------------------------
+# read /proc/uptime
+if [[ -r /proc/uptime ]]
+then
+    # drop decimals
+    _CURRENT_UPTIME=$(awk '{ printf("%2.d", $1)}' /proc/uptime 2>/dev/null)
+else
+    warn "/proc/uptime cannot be found or queried"
+    return 1
+fi
+
+#------------------------------------------------------------------------------
+# read state file
+if [[ -r ${_STATE_FILE} ]]
+then
+    _PREVIOUS_UPTIME=$(<"${_STATE_FILE}")
+    # shellcheck disable=SC2181
+    if (( $? > 0 ))
+    then
+        warn "failed to read state file at ${_STATE_FILE}"
+        _PREVIOUS_UPTIME=""
+    fi
+fi
+
+#------------------------------------------------------------------------------
+# convert uptimes values
+_CURRENT_UPTIME_MINS=$(( _CURRENT_UPTIME / 60 ))
+data_is_numeric "${_CURRENT_UPTIME_MINS}"
+# shellcheck disable=SC2181
+if (( $? > 0 ))
+then
+    warn "unable to calculate current uptime value (minutes)"
+    (( ARG_DEBUG )) && debug "_CURRENT_UPTIME_MINS=${_CURRENT_UPTIME_MINS}"
+    return 1
+fi
+_PREVIOUS_UPTIME_MINS=$(( _PREVIOUS_UPTIME / 60 ))
+data_is_numeric "${_CURRENT_UPTIME_MINS}"
+# shellcheck disable=SC2181
+if (( $? > 0 ))
+then
+    warn "unable to calculate previous uptime value (minutes)"
+    (( ARG_DEBUG )) && debug "_PREVIOUS_UPTIME_MINS=${_PREVIOUS_UPTIME_MINS}"
+    return 1
+fi
+
+#------------------------------------------------------------------------------
+# check reboot event
+if (( _CHECK_REBOOT > 0 ))
+then
+    # convert _REBOOT_TIME to minutes
+    _REBOOT_TIME_MINS=$(data_timestring_to_mins "${_REBOOT_TIME}")
+    data_is_numeric "${_REBOOT_TIME_MINS}"
+    # shellcheck disable=SC2181
+    if (( $? > 0 ))
+    then
+        warn "unable to calculate 'reboot_time' value from configuration file ${_CONFIG_FILE}"
+        (( ARG_DEBUG )) && debug "_REBOOT_TIME=${_REBOOT_TIME}"
+        return 1
+    fi
+
+    # previous uptime missing?
+    if [[ -z "${_PREVIOUS_UPTIME}" ]]
+    then
+        if (( ARG_LOG > 0 ))
+        then
+            print "${_CURRENT_UPTIME}" >"${_STATE_FILE}"
+            # shellcheck disable=SC2181
+            if (( $? > 0 ))
+            then
+                warn "failed to update state file at ${_STATE_FILE}"
+                return 1
+            else
+                log "unable to find previously recorded uptime, resetting to current uptime"
+                return 0
+            fi
+        else
+            log "unable to find previously recorded uptime, resetting to current uptime"
+        fi
+    else
+        # current uptime + reboot time is smaller than previous uptime?
+        _THRESHOLD_UPTIME_MINS=$(( _CURRENT_UPTIME_MINS + _REBOOT_TIME_MINS ))
+        if (( _THRESHOLD_UPTIME_MINS < _PREVIOUS_UPTIME_MINS ))
+        then
+            _MSG="reboot check: current uptime is NOK; check if reboot occurred"
+            _STC=1
+        else
+            _MSG="reboot check: current uptime is OK"
+            _STC=0
+        fi
+    fi
+    if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+    then
+        log_hc "$0" ${_STC} "${_MSG}" "${_THRESHOLD_UPTIME_MINS}" "${_PREVIOUS_UPTIME_MINS}"
+    fi
+
+    # update state file
+    if (( ARG_LOG > 0 ))
+    then
+        print "${_CURRENT_UPTIME}" >"${_STATE_FILE}"
+        # shellcheck disable=SC2181
+        if (( $? > 0 ))
+        then
+            warn "failed to update state file at ${_STATE_FILE}"
+            return 1
+        fi
+    fi
+else
+    log "reboot check: not enabled"
+fi
+
+#------------------------------------------------------------------------------
+# check old age event
+if (( _CHECK_OLD_AGE > 0 ))
+then
+    # convert _OLD_AGE_TIME to minutes
+    _OLD_AGE_TIME_MINS=$(data_timestring_to_mins "${_OLD_AGE_TIME}")
+    data_is_numeric "${_OLD_AGE_TIME_MINS}"
+    # shellcheck disable=SC2181
+    if (( $? > 0 ))
+    then
+        warn "unable to calculate 'old_age_time' value from configuration file ${_CONFIG_FILE}"
+        (( ARG_DEBUG )) && debug "_OLD_AGE_TIME=${_OLD_AGE_TIME}"
+        return 1
+    fi
+
+    # are we old age yet?
+    if (( _CURRENT_UPTIME_MINS > _OLD_AGE_TIME_MINS ))
+    then
+        _MSG="old_age check: current uptime is NOK; old age has arrived (>${_OLD_AGE_TIME})"
+        _STC=1
+    else
+        _MSG="old_age check: current uptime is OK"
+        _STC=0
+    fi
+    if (( _LOG_HEALTHY > 0 || _STC > 0 ))
+    then
+        log_hc "$0" ${_STC} "${_MSG}" "${_CURRENT_UPTIME_MINS}" "${_OLD_AGE_TIME_MINS}"
+    fi
+else
+    log "old age check: not enabled"
+fi
+
+return 0
+}
+
+# -----------------------------------------------------------------------------
+function _show_usage
+{
+cat <<- EOT
+NAME        : $1
+VERSION     : $2
+CONFIG      : $3 with:
+               log_healthy=<yes|no>
+               check_reboot=<yes|no>
+               reboot_time=<timestring>
+               check_old_age=<yes|no>
+               old_age_time=<timestring>
+PURPOSE     : Checks for unexpected/unplanned reboot events based on uptime
+               values.
+              Checks whether the host has been up and running for too much time.
+LOG HEALTHY : Supported
+
+EOT
+
+return 0
+}
+
+
+#------------------------------------------------------------------------------
+# END of script
+#------------------------------------------------------------------------------