#!/bin/bash
#
# Plugin to monitor spamdyke
#
#    Spamdyke logs expected to be inside /var/log/mail.info
#    logtail must be installed
#    Plugin state stored in /var/lib/munin/plugin-state
#      (statedir as defined in munin debian packages)
#
#    You may override spamdyke logfile in plugin-conf.d/munin-node, and
#    give the user/group with enough rights to read your logs (group
#    adm on stock debian works fine)
#
#    [spamdyke]
#    env.logfile /var/log/maillog
#    group adm
#
#
#
# Parameters understood:
#
# 	config   (required)
# 	autoconf (optional)
#

mktempfile () {
    mktemp -t
}

MAIL_LOG=${logfile:-/var/log/mail.info}
LOGTAIL=${logtail:-`which logtail`}
STATEFILE=$MUNIN_PLUGSTATE/spamdyke.offset

if [ "$1" = "autoconf" ]; then
        if [ -f "${MAIL_LOG}" -a -n "${LOGTAIL}" -a -x "${LOGTAIL}" ] ; then
		echo yes
	else
		echo no
	fi
	exit 0
fi

if [ "$1" = "config" ]; then
	echo 'graph_title spamdyke filtering'
	echo 'graph_category mail'
	echo 'graph_vlabel Count'
	echo 'graph_args --base 1000 -l 0'
	echo 'graph_total total'

	echo 'allowed.label ALLOWED'
	echo 'allowed.info The message passed all filters. qmail may still bounce the message for other reasons, however. '
	echo 'allowed.min 1'
	echo 'allowedauthenticated.label ALLOWED_AUTHENTICATED'
	echo 'allowedauthenticated.info The remote client successfully authenticated using SMTP AUTH with spamdyke. If qmail is patched to provide SMTP AUTH, this code will never be used '
	echo 'allowedauthenticated.min 1'
	echo 'allowedtls.label ALLOWED_TLS'
	echo 'allowedtls.info The remote client successfully started a TLS session with spamdyke '
	echo 'allowedtls.min 1'
	echo 'timeout.label TIMEOUT'
	echo 'timeout.info The connection timed out, either in total time ("connection-timeout-secs") or idle time ("idle-timeout-secs"). If the connection was already being blocked for another reason, the code for that error is given as REALCODE '
	echo 'timeout.min 1'
	echo 'deniedtoomanyrecipients.label DENIED_TOO_MANY_RECIPIENTS'
	echo 'deniedtoomanyrecipients.info The recipient was blocked because the limit ("max-recipients") was reached for this connection. The SMTP connection continues after this error occurs'
	echo 'deniedtoomanyrecipients.min 1'
	echo 'deniedunqualifiedrecipient.label DENIED_UNQUALIFIED_RECIPIENT'
	echo 'deniedunqualifiedrecipient.info The recipient was blocked because the address had no domain name. The SMTP connection continues after this error occurs'
	echo 'deniedunqualifiedrecipient.min 1'
	echo 'deniedgraylisted.label DENIED_GRAYLISTED'
	echo 'deniedgraylisted.info  recipient was blocked because the sender/recipient combination was graylisted '
	echo 'deniedgraylisted.min 1'
	echo 'deniedrdnsmissing.label DENIED_RDNS_MISSING'
	echo 'deniedrdnsmissing.info The connection was blocked because the remote server has no rDNS name at all'
	echo 'deniedrdnsmissing.min 1'
	echo 'deniedrdnsresolve.label DENIED_RDNS_RESOLVE'
	echo 'deniedrdnsresolve.info The connection was blocked because the remote servers rDNS name does not resolve '
	echo 'deniedrdnsresolve.min 1'
	echo 'deniedipinccrdns.label DENIED_IP_IN_CC_RDNS'
	echo 'deniedipinccrdns.info The connection was blocked because the remote servers IP address was found in the remote servers rDNS name _and_ the remote servers rDNS name ends in a country code ("reject-ip-in-cc-rdns"). '
	echo 'deniedipinccrdns.min 1'
	echo 'deniedipinrdns.label DENIED_IP_IN_RDNS'
	echo 'deniedipinrdns.info The connection was blocked because the remote servers IP address was found in the remote servers rDNS name _and_ a prohibited keyword was found in the remote servers rDNS name ("ip-in-rdns-keyword-file"). '
	echo 'deniedipinrdns.min 1'
	echo 'deniedearlytalker.label DENIED_EARLYTALKER'
	echo 'deniedearlytalker.info The connection was blocked because the remote server began sending data before the SMTP greeting was issued ("greeting-delay-secs"). '
	echo 'deniedearlytalker.min 1'
	echo 'deniedblacklistname.label DENIED_BLACKLIST_NAME'
	echo 'deniedblacklistname.info The connection was blocked because the base domain of the remote servers rDNS name is blacklisted ("rdns-blacklist-file" or "rdns-blacklist-dir"). '
	echo 'deniedblacklistname.min 1'
	echo 'deniedblacklistip.label DENIED_BLACKLIST_IP'
	echo 'deniedblacklistip.info The connection was blocked because the remote servers IP address is blacklisted ("ip-blacklist-file"). '
	echo 'deniedblacklistip.min 1'
	echo 'deniedsenderblacklisted.label DENIED_SENDER_BLACKLISTED'
	echo 'deniedsenderblacklisted.info The connection was blocked because the senders email address is blacklisted ("sender-blacklist-file"). '
	echo 'deniedsenderblacklisted.min 1'
	echo 'deniedrecipientblacklisted.label DENIED_RECIPIENT_BLACKLISTED'
	echo 'deniedrecipientblacklisted.info The recipient was blocked because the recipient email address is blacklisted ("recipient-blacklist-file"). '
	echo 'deniedrecipientblacklisted.min 1'
	echo 'deniedrblmatch.label DENIED_RBL_MATCH'
	echo 'deniedrblmatch.info The connection was blocked because the remote servers IP address was found on a DNS RBL ("check-dnsrbl"). '
	echo 'deniedrblmatch.min 1'
	echo 'deniedrhsblmatch.label DENIED_RHSBL_MATCH'
	echo 'deniedrhsblmatch.info The connection was blocked because the remote servers reverse DNS name was found on a righthand-side DNS blacklist (RHSBL) OR the connection was blocked because the senders domain name was found on a righthand-side DNS blacklist (RHSBL). '
	echo 'deniedrhsblmatch.min 1'
	echo 'deniedsendernomx.label DENIED_SENDER_NO_MX'
	echo 'deniedsendernomx.info The connection was blocked because the senders domain has no mail exchanger, making the sender address invalid'
	echo 'deniedsendernomx.min 1'
	echo 'deniedccessdenied.label DENIED_ACCESS_DENIED'
	echo 'deniedaccessdenied.info The connection was blocked because the remote servers IP address or rDNS name was found in the access file with a "deny" command ("access-file"). '
	echo 'deniedccessdenied.min 1'
	echo 'deniedrelaying.label DENIED_RELAYING'
	echo 'deniedrelaying.info The recipient was blocked because the recipients domain is not locally hosted ("local-domains-file") and the remote server is not allowed to relay ("access-file"). '
	echo 'deniedrelaying.min 1'
	echo 'deniedother.label DENIED_OTHER'
	echo 'deniedother.info The connection was rejected by qmail (or another downstream filter), not spamdyke. '
	echo 'deniedother.min 1'
	echo 'failedauth.label FAILED_AUTH'
	echo 'failedauth.info The remote server attempted to authenticate but the given username and/or password were incorrect ("smtp-auth-command" or "smtp-auth-command-encryption"). '
	echo 'failedauth.min 1'
	echo 'unknownauth.label UNKNOWN_AUTH'
	echo 'unknownauth.info The remote server requested an authentication method spamdyke does not support. This should not happen. '
	echo 'unknownauth.min 1'
	echo 'failedtls.label FAILED_TLS'
	echo 'failedtls.info The remote client attempted to start a TLS session but SSL negotiation failed.'
	echo 'failedtls.min 1'
        exit 0
fi

allowed=u
allowedauthenticated=u
allowedtls=u
timeout=u
deniedtoomanyrecipients=U
deniedunqualifiedrecipient=U
deniedgraylisted=U
deniedrdnsmissing=U
deniedrdnsresolve=U
deniedipinccrdns=U
deniedipinrdns=U
deniedearlytalker=U
deniedblacklistname=U
deniedblacklistip=U
deniedsenderblacklisted=U
deniedrecipientblacklisted=U
deniedrblmatch=U
deniedrhsblmatch=U
deniedsendernomx=U
deniedccessdenied=U
deniedrelaying=U
deniedother=U
failedauth=U
unknownauth=U
failedtls=U

TEMP_FILE=`mktempfile munin.spamdyke.XXXXXX`

if [ -n "$TEMP_FILE" -a -f "$TEMP_FILE" ]
then
	$LOGTAIL ${MAIL_LOG} $STATEFILE | grep "spamdyke\[.*\]:" > ${TEMP_FILE}

	allowed=`grep 'spamdyke\[[0-9\]*]: ALLOWED'  ${TEMP_FILE} | wc -l`
	allowedauthenticated=`grep 'spamdyke\[[0-9]*\]: ALLOWED_AUTHENTICATED'  ${TEMP_FILE} | wc -l`
	allowedtls=`grep 'spamdyke\[[0-9]\]: ALLOWED_TLS'  ${TEMP_FILE} | wc -l`
	timeout=`grep 'spamdyke\[[0-9]*\]: TIMEOUT'  ${TEMP_FILE} | wc -l`
	deniedtoomanyrecipients=`grep 'spamdyke\[[0-9]*\]: DENIED_TOO_MANY_RECIPIENTS' ${TEMP_FILE} | wc -l`
	deniedunqualifiedrecipient=`grep 'spamdyke\[[0-9]*\]: DENIED_UNQUALIFIED_RECIPIENT' ${TEMP_FILE} | wc -l`
	deniedgraylisted=`grep 'spamdyke\[[0-9]*\]: DENIED_GRAYLISTED' ${TEMP_FILE} | wc -l`
	deniedrdnsmissing=`grep 'spamdyke\[[0-9]*\]: DENIED_RDNS_MISSING' ${TEMP_FILE} | wc -l`
	deniedrdnsresolve=`grep 'spamdyke\[[0-9]*\]: DENIED_RDNS_RESOLVE' ${TEMP_FILE} | wc -l`
	deniedipinccrdns=`grep 'spamdyke\[[0-9]*\]: DENIED_IP_IN_CC_RDNS' ${TEMP_FILE} | wc -l`
	deniedipinrdns=`grep 'spamdyke\[[0-9]*\]: DENIED_IP_IN_RDNS' ${TEMP_FILE} | wc -l`
	deniedearlytalker=`grep 'spamdyke\[[0-9]*\]: DENIED_EARLYTALKER' ${TEMP_FILE} | wc -l`
	deniedblacklistname=`grep 'spamdyke\[[0-9]*\]: DENIED_BLACKLIST_NAME' ${TEMP_FILE} | wc -l`
	deniedblacklistip=`grep 'spamdyke\[[0-9]*\]: DENIED_BLACKLIST_IP' ${TEMP_FILE} | wc -l`
	deniedsenderblacklisted=`grep 'spamdyke\[[0-9]*\]: DENIED_SENDER_BLACKLISTED' ${TEMP_FILE} | wc -l`
	deniedrecipientblacklisted=`grep 'spamdyke\[[0-9]*\]: DENIED_RECIPIENT_BLACKLISTED' ${TEMP_FILE} | wc -l`
	deniedrblmatch=`grep 'spamdyke\[[0-9]*\]: DENIED_RBL_MATCH' ${TEMP_FILE} | wc -l`
	deniedrhsblmatch=`grep 'spamdyke\[[0-9]*\]: DENIED_RHSBL_MATCH' ${TEMP_FILE} | wc -l`
	deniedsendernomx=`grep 'spamdyke\[[0-9]*\]: DENIED_SENDER_NO_MX' ${TEMP_FILE} | wc -l`
	deniedccessdenied=`grep 'spamdyke\[[0-9]*\]: DENIED_ACCESS_DENIED' ${TEMP_FILE} | wc -l`
	deniedrelaying=`grep 'spamdyke\[[0-9]*\]: DENIED_RELAYING' ${TEMP_FILE} | wc -l`
	deniedother=`grep 'spamdyke\[[0-9]*\]: DENIED_OTHER' ${TEMP_FILE} | wc -l`
	failedauth=`grep 'spamdyke\[[0-9]*\]: FAILED_AUTH' ${TEMP_FILE} | wc -l`
	unknownauth=`grep 'spamdyke\[[0-9]*\]: UNKNOWN_AUTH' ${TEMP_FILE} | wc -l`
	failedtls=`grep 'spamdyke\[[0-9]*\]: FAILED_TLS' ${TEMP_FILE} | wc -l`

	/bin/rm -f $TEMP_FILE
fi

echo "allowed.value ${allowed}"
echo "allowedauthenticated.value ${allowedauthenticated}"
echo "allowedtls.value ${allowedtls}"
echo "timeout.value ${timeout}"
echo "deniedtoomanyrecipients.value ${deniedtoomanyrecipients}"
echo "deniedunqualifiedrecipient.value ${deniedunqualifiedrecipient}"
echo "deniedgraylisted.value ${deniedgraylisted}"
echo "deniedrdnsmissing.value ${deniedrdnsmissing}"
echo "deniedrdnsresolve.value ${deniedrdnsresolve}"
echo "deniedipinccrdns.value ${deniedipinccrdns}"
echo "deniedipinrdns.value ${deniedipinrdns}"
echo "deniedearlytalker.value ${deniedearlytalker}"
echo "deniedblacklistname.value ${deniedblacklistname}"
echo "deniedblacklistip.value ${deniedblacklistip}"
echo "deniedsenderblacklisted.value ${deniedsenderblacklisted}"
echo "deniedrecipientblacklisted.value ${deniedrecipientblacklisted}"
echo "deniedrblmatch.value ${deniedrblmatch}"
echo "deniedrhsblmatch.value ${deniedrhsblmatch}"
echo "deniedsendernomx.value ${deniedsendernomx}"
echo "deniedccessdenied.value ${deniedccessdenied}"
echo "deniedrelaying.value ${deniedrelaying}"
echo "deniedother.value ${deniedother}"
echo "failedauth.value ${failedauth}"
echo "unknownauth.value ${unknownauth}"
echo "failedtls.value ${failedtls}"