From 049ef89f61d90b253c7dfdddde830054c385b78a Mon Sep 17 00:00:00 2001
From: Holger Weiss <holger@zedat.fu-berlin.de>
Date: Sun, 29 Dec 2013 00:39:07 +0100
Subject: Let Cron check our FTP mirrors

Add a daily job that updates a timestamp file in our download area and
checks whether the FTP mirrors fetched the one from yesterday.

diff --git a/bin/check-mirrors b/bin/check-mirrors
new file mode 100755
index 0000000..ed37c38
--- /dev/null
+++ b/bin/check-mirrors
@@ -0,0 +1,47 @@
+#!/bin/sh
+#
+# Copyright (c) 2013 Nagios Plugins Development Team
+#
+# Originally written by Holger Weiss <holger@zedat.fu-berlin.de>.
+#
+# This file is free software; the Nagios Plugins Development Team gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY, to the extent permitted by law; without even the implied
+# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+set -e
+set -u
+umask 022
+
+export PATH='/usr/local/bin:/usr/local/sbin:/bin:/sbin:/usr/bin:/usr/sbin'
+
+mirrors='
+    ftp://ftp.fu-berlin.de/unix/network/nagios-plugins/
+    ftp://ftp.lysator.liu.se/pub/nagios-plugins/
+'
+prefix='/home/plugins'
+myself=${0##*/}
+download_dir="$prefix/web/download"
+temp_dir=$(mktemp -d "/tmp/$myself.XXXXXX")
+
+trap 'rm -rf "$temp_dir"' EXIT
+
+cd "$temp_dir"
+date -d 'yesterday' '+%F' >'expected'
+for mirror in $mirrors
+do
+	url="${mirror%/}/timestamp"
+
+	if curl -s -S -O "$url" >'curl.log' 2>&1
+	then
+		cmp -s 'expected' 'timestamp' \
+		    || echo >&2 "$mirror is outdated ($(cat 'timestamp'))."
+	else
+		echo >&2 "Cannot fetch $url: $(cat 'curl.log')"
+	fi
+done
+cd "$OLDPWD"
+date '+%F' >"$download_dir/timestamp"
diff --git a/etc/crontab b/etc/crontab
index 86bba49..0339f69 100644
--- a/etc/crontab
+++ b/etc/crontab
@@ -5,3 +5,4 @@
 MAILTO=admin@monitoring-plugins.org
 #
 */10 * * * * $HOME/bin/git-mirror $HOME/repositories/nagios-*.git
+44   4 * * * $HOME/bin/check-mirrors
-- 
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