From 428b9c73df902f6232312751a0c38060cf3cdbea Mon Sep 17 00:00:00 2001
From: =?utf8?q?Arkadiusz=20Mi=C5=9Bkiewicz?= <arekm@maven.pl>
Date: Tue, 23 Nov 2021 11:25:06 +0100
Subject: [PATCH] Rel 4; make cronie restart itself when PAM problems happen.
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On glibc/pam upgrades cronie can be very unhappy:

Feb 9 13:52:01 firma /usr/sbin/crond[6592]: (root) FAILED
to authorize user with PAM (Moduł jest nieznany)

because crond is inked with old stuff and can't dlopen newer pam modules.

Exact cause (like which symbol) is not known because crond
is using PAM_SILENT flag which silences most of pam error messages.

Add hacky script to make crond self cure (this problem happened way
too many times for me).
---
 cronie.spec | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/cronie.spec b/cronie.spec
index 2255574..c7b5da6 100644
--- a/cronie.spec
+++ b/cronie.spec
@@ -18,7 +18,7 @@ Summary:	Cron daemon for executing programs at set times
 Summary(pl.UTF-8):	Demon cron do uruchamiania programów o zadanym czasie
 Name:		cronie
 Version:	1.5.7
-Release:	2
+Release:	4
 License:	MIT and BSD and GPL v2
 Group:		Daemons
 Source0:	https://github.com/cronie-crond/cronie/releases/download/%{name}-%{version}/%{name}-%{version}.tar.gz
@@ -166,6 +166,18 @@ cat > $RPM_BUILD_ROOT%{_sysconfdir}/cron/cron.deny << 'EOF'
 #		NOT allowed to use the local cron daemon
 EOF
 
+cat > $RPM_BUILD_ROOT%{_sysconfdir}/cron.daily/check-crond << 'EOF'
+#!/bin/sh
+
+# ugly and limited hack. make cronie restart itself
+if [ -x /bin/awk -a -x /bin/grep -a -f /var/log/cron ]; then
+	LC_ALL=C /bin/awk -v d="$(LC_ALL=C date "+%b %e")" ' $1 " " $2 ~ d' /var/log/cron \
+		| /bin/grep -qE "PAM.*(Modu. jest nieznany|Module is unknown)" \
+		&& echo "crond is failing on PAM, restarting ( https://github.com/cronie-crond/cronie/issues/87 )" >&2 \
+		&& /sbin/service crond restart
+fi
+EOF
+
 %clean
 rm -rf $RPM_BUILD_ROOT
 
@@ -221,6 +233,7 @@ chmod 754 /etc/rc.d/init.d/crond
 %doc AUTHORS ChangeLog README
 %attr(750,root,crontab) %dir /etc/cron
 %attr(750,root,crontab) %dir /etc/cron.daily
+%attr(750,root,root) /etc/cron.daily/check-crond
 %attr(750,root,crontab) %dir /etc/cron.hourly
 %attr(750,root,crontab) %dir /etc/cron.monthly
 %attr(750,root,crontab) %dir /etc/cron.weekly
-- 
2.43.0