add new module sshd-dns which can process sshd conf files substituing IPs for hostnames

modules/sshd-dns.mod

@@ -0,0 +1,30 @@
+#!/bin/bash
+
+sshd_dns () {
+local dir	
+local dnsconf
+local conf
+dir=${1:-"/etc/ssh/sshd_config.d"}
+pushd "$dir" 1>/dev/null || return;
+for dnsconf in *.conf.dns; do
+    [[ -f "$dnsconf" ]] || break
+    conf=$(basename $dnsconf .dns)
+    echo "----- processing sshd file $dnsconf to $conf ----"
+    sudo cp $dnsconf $conf
+    cat $conf
+    echo -e "\n------------"
+	for host in $(sed -e 's/[ ,]/\n/g' $conf | sed -n 's/[Dd][Nn][Ss]://p'); do
+	echo found host $host, substituting $(dig +short $host) 
+	sudo sed -i 's/[Dd][Nn][Ss]:'$host'/'$(dig +short $host)'/g' $conf
+	done
+    echo "----- created sshd conf file $conf ----"
+    cat $conf
+    echo -e "\n------------"
+  done
+echo restart ssh service daemon to enable these changes  
+popd 1>/dev/null || return 
+
+}
+
+
+