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#!/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.

mirrors='
    ftp://ftp.fu-berlin.de/unix/network/monitoring-plugins/
    ftp://ftp.lysator.liu.se/pub/monitoring-plugins/
    ftp://ftp.belnet.be/mirror/nagios-plugins.org/
    ftp://ftp.cc.uoc.gr/mirrors/monitoring-plugins/
    ftp://mirrors.fe.up.pt/pub/monitoring-plugins/
    ftp://mirror.bytemark.co.uk/monitoring-plugins/
    ftp://mirror.is.co.za/mirror/monitoring-plugins.org/
    ftp://mirror.webtastix.net/monitoring-plugins/
    ftp://mirror.mephi.ru/nagios-plugins/
    ftp://mirrors.ustc.edu.cn/monitoring-plugins/
'

#
# Our mirrors:
#
# GERMANY
#
#   URLs:
#   - ftp://ftp.fu-berlin.de/unix/network/monitoring-plugins/
#
#   Features:
#   - IPv4
#   - 10 GBit/s
#   - Updated four times a day
#
#   Contacts:
#   - Mirror Admins <ftp AT fu-berlin.de>
#   - Holger Weiss <holger AT zedat.fu-berlin.de>
#
#   Home page:
#   - http://www.fu-berlin.de/en/
#
# SWEDEN
#
#   URLs:
#   - ftp://ftp.lysator.liu.se/pub/monitoring-plugins/
#   - http://ftp.lysator.liu.se/pub/monitoring-plugins/
#   - https://ftp.lysator.liu.se/pub/monitoring-plugins/
#   - rsync://ftp.lysator.liu.se/pub/monitoring-plugins/
#
#   Features:
#   - IPv4
#   - IPv6
#   - 1 GBit/s
#   - Updated three times a day
#
#   Contacts:
#   - Mirror Admins <ftp-master AT lysator.liu.se>
#   - Niclas Zeising <zeising AT lysator.liu.se>
#
#   Home page:
#   - http://www.lysator.liu.se/english.html
#
# BELGIUM
#
#   URLs:
#   - ftp://ftp.belnet.be/mirror/nagios-plugins.org/
#   - http://ftp.belnet.be/nagios-plugins.org/
#
#   Features:
#   - IPv4
#   - IPv6
#   - Updated twice a day
#
#   Contacts:
#   - Mirror Admins <ftpmaint AT belnet.be>
#
#   Home page:
#   - http://www.belnet.be/
#
# GREECE
#
#   URLs:
#   - ftp://ftp.cc.uoc.gr/mirrors/monitoring-plugins/
#   - http://ftp.cc.uoc.gr/mirrors/monitoring-plugins/
#
#   Features:
#   - IPv4
#   - Updated daily
#
#   Contacts:
#   - Mirror Admins <ftpadm AT cc.uoc.gr>
#   - Counalakis Dimitris-Nektarios <coudim AT cc.uoc.gr>
#
#   Home page:
#   - http://www.en.uoc.gr/
#
# PORTUGAL
#
#   URLs:
#   - ftp://mirrors.fe.up.pt/pub/monitoring-plugins/
#   - http://mirrors.fe.up.pt/pub/monitoring-plugins/
#
#   Features:
#   - IPv4
#   - IPv6
#   - Updated daily
#
#   Contacts:
#   - Mirror Admins <mirrors AT fe.up.pt>
#   - Filipe Carvalho <filipec AT sp.up.pt>
#
#   Home page:
#   - http://www.sp.up.pt/
#
# UNITED KINGDOM
#
#   URLs:
#   - ftp://mirror.bytemark.co.uk/monitoring-plugins/
#   - http://mirror.bytemark.co.uk/monitoring-plugins/
#   - rsync://mirror.bytemark.co.uk/monitoring-plugins/ (currently not available)
#
#   Features:
#   - IPv4
#   - IPv6
#   - Updated twice a day
#
#   Contacts:
#   - James Lawrie <support AT support.bytemark.co.uk>
#
#   Home page:
#   - http://www.bytemark.co.uk/
#
# SOUTH AFRICA
#
#   URLs:
#   - ftp://mirror.is.co.za/mirror/monitoring-plugins.org/
#   - http://mirror.is.co.za/mirror/monitoring-plugins.org/
#   - rsync://mirror.is.co.za/mirror/monitoring-plugins.org/
#
#   Features:
#   - IPv4
#   - Updated twice a day
#
#   Contacts:
#   - Henti Smith <ftpadmin AT is.co.za>
#
#   Home page:
#   - http://www.is.co.za/
#
# NEW ZEALAND
#
#   URLs:
#   - ftp://mirror.webtastix.net/monitoring-plugins/
#   - http://mirror.webtastix.net/monitoring-plugins/
#
#   Features:
#   - IPv4
#   - Updated hourly
#
#   Contacts:
#   - Mirror Admins <mirrors AT webtastix.net>
#   - Shane Langley <shane AT webtastix.net>
#
#   Home page:
#   - http://www.webtastix.net/
#
# RUSSIA
#
#   URLs:
#   - ftp://mirror.mephi.ru/nagios-plugins/
#   - http://mirror.mephi.ru/nagios-plugins/
#   - rsync://mirror.mephi.ru/nagios-plugins/
#
#   Features:
#   - IPv4
#   - Updated twice a day
#
#   Contacts:
#   - Mirror Admins <mirror-private AT ut.mephi.ru>
#   - Andrew Savchenko <bircoph AT ut.mephi.ru>
#   - Dmitry Okunev <dyokunev AT ut.mephi.ru>
#
#   Home page:
#   - http://eng.mephi.ru/
#
# CHINA
#
#   URLs:
#   - ftp://mirrors.ustc.edu.cn/monitoring-plugins/
#   - http://mirrors.ustc.edu.cn/monitoring-plugins/
#   - rsync://mirrors.ustc.edu.cn/monitoring-plugins/
#
#   Features:
#   - IPv4
#   - IPv6
#   - Updated twice a day
#
#   Contacts:
#   - Mirror Admins <lug AT ustc.edu.cn>
#   - Roy Zhang <pudh4418 AT gmail.com>
#
#   Home page:
#   - http://lug.ustc.edu.cn/
#

set -e
set -u
umask 022

export PATH='/usr/local/bin:/usr/local/sbin:/bin:/sbin:/usr/bin:/usr/sbin'

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 ncftpget -V -t 600 "$url" >'ftp.log' 2>&1
	then
		cmp -s 'expected' 'timestamp' \
		    || echo >&2 "$mirror is outdated ($(cat 'timestamp'))."
	else
		tail -n 1 'ftp.log' >&2
	fi
	rm -f 'timestamp'
done
cd "$OLDPWD"
date '+%F' >"$download_dir/timestamp"