Munin contributed plugins

#!/bin/bash

#

# Plugin to monitor incoming DKIM mail.

#

# Florian Sager, sager@agitos.de, 2008-02-06

#

# Parameters understood:

#

#       config   (required)

#       autoconf (optional)

#

# Gives the result of the verification. The following values are possible:

# 

# pass

#     Returned if a valid DKIM-Signature header was found, and the signature contains a correct value for the message.

#

# fail

#     Returned if a valid DKIM-Signature header was found, but the signature does not contain a correct value for the message.

#

# invalid

#     Returned if no valid DKIM-Signature headers were found, but there is at least one invalid DKIM-Signature header. For a reason why a DKIM-Signature header found in the message was invalid, see $dkim->{signature_reject_reason}.

#

# none

#     Returned if no DKIM-Signature headers (valid or invalid) were found.

# 

# In case of multiple signatures, the "best" result will be returned. Best is defined as "pass", followed by "fail", "invalid", and "none".

# 

mktempfile () {

mktemp -t

}

MAIL_LOG=${logfile:-/var/log/mail.log}

LOGTAIL=${logtail:-`which logtail`}

STATEFILE=/var/lib/munin/plugin-state/dkimproxy_mails.offset

if [ "$1" = "autoconf" ]; then

        if [ -f "${MAIL_LOG}" -a -n "${LOGTAIL}" -a -x "${LOGTAIL}" ] ; then

                echo yes

                exit 0

        else

                echo no

                exit 1

        fi

fi

if [ "$1" = "config" ]; then

        echo 'graph_title DKIM Proxy mails'

        echo 'graph_order dkimnone dkimpass dkiminvalid dkimfail'

        echo 'graph_category mail'

        echo 'graph_vlabel Count'

        echo 'graph_args --base 1000 -l 0'

#       echo 'graph_total total'

        echo 'dkimnone.label No DKIM-Sigs'

        echo 'dkimnone.min 0'

        echo 'dkimpass.label Valid DKIM-Sigs'

        echo 'dkimpass.min 0'

        echo 'dkiminvalid.label Invalid DKIM-Sigs'

        echo 'dkiminvalid.min 0'

        echo 'dkimfail.label Failed DKIM-Sigs'

        echo 'dkimfail.min 0'        

        exit 0

fi

dkimnone=U

dkimpass=U

dkiminvalid=U

dkiminfail=U

TEMP_FILE=`mktempfile munin-dkimproxy_mails.XXXXXX`

if [ -n "$TEMP_FILE" -a -f "$TEMP_FILE" ]

then

        $LOGTAIL ${MAIL_LOG} $STATEFILE | grep "DKIM verify - " > ${TEMP_FILE}

        dkimnone=`grep 'DKIM verify - none' ${TEMP_FILE} | wc -l`

        dkimpass=`grep 'DKIM verify - pass' ${TEMP_FILE} | wc -l`

        dkiminvalid=`grep 'DKIM verify - invalid' ${TEMP_FILE} | wc -l`

        dkimfail=`grep 'DKIM verify - fail' ${TEMP_FILE} | wc -l`

        /bin/rm -f $TEMP_FILE

fi

echo "dkimnone.value ${dkimnone}"

echo "dkimpass.value ${dkimpass}"

echo "dkiminvalid.value ${dkiminvalid}"

echo "dkimfail.value ${dkimfail}"