parse firewall rules with xslt

README.md

parse firewall rules with xslt

to run

xsltproc firewall.xsl source.xml

to test with bash

diff --report-identical-files <(xsltproc firewall.xsl source.xml) expect

If the results of the process substitution are the same as the file expect, then the test has passed.

expect

169.25
169.25
169.25
169.25
224.81
158.87
149.131

firewall.xsl

<?xml version="1.0"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
	<xsl:output method="text" />
	<xsl:strip-space elements="*" />

	<xsl:template match="//firewallRule[action/text() = 'accept']">
		<xsl:apply-templates select="source|destination"/>
	</xsl:template>

	<xsl:template match="source|destination">
		<xsl:apply-templates select="ipAddress"/>
	</xsl:template>

	<xsl:template match="ipAddress">
		<xsl:value-of select="." />
		<xsl:text>&#x0a;</xsl:text>
	</xsl:template>

	<!-- override default built-in text() template -->
	<xsl:template match="text()" />
</xsl:stylesheet>