From e613b82c5f6206b19b38bb432587061e5cde8e93 Mon Sep 17 00:00:00 2001
From: Florian Sager <unknown@munin-monitoring.org>
Date: Sun, 17 Feb 2008 11:48:46 +0100
Subject: [PATCH] Initial version

---
 plugins/other/dkimproxy_mails | 88 +++++++++++++++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100755 plugins/other/dkimproxy_mails

diff --git a/plugins/other/dkimproxy_mails b/plugins/other/dkimproxy_mails
new file mode 100755
index 00000000..e1f2a5b1
--- /dev/null
+++ b/plugins/other/dkimproxy_mails
@@ -0,0 +1,88 @@
+#!/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}"