From 1c8d846574652f392f4a33c98550443df97a53c0 Mon Sep 17 00:00:00 2001
From: daniel <daniel.barbero@artica.es>
Date: Thu, 17 Jan 2019 15:49:41 +0100
Subject: [PATCH] WIP IPAM Supernet

Former-commit-id: 9da8df381292bc79a49c1416fc6d2820f4b814ac
---
 pandora_console/include/functions.php | 56 +++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)

diff --git a/pandora_console/include/functions.php b/pandora_console/include/functions.php
index f2056f058e..e8130b6e4d 100644
--- a/pandora_console/include/functions.php
+++ b/pandora_console/include/functions.php
@@ -3435,4 +3435,60 @@ function pandora_xhprof_display_result($key = "", $method = "link") {
 
 	}
 }
+
+/**
+ * From a network with a mask remove the smallest ip and the highest
+ *
+ * @param string address to identify the network.
+ * @param string mask to identify the mask network
+ * @return array or false with smallest ip and highest ip
+ */
+function range_ips_for_network($address, $mask) {
+	if(!isset($address) || !isset($mask)){
+		return false;
+	}
+
+	//convert ip addresses to long form
+	$address_long = ip2long($address);
+	$mask_long = ip2long($mask);
+
+	//caculate first usable address
+	$ip_host_first = ((~$mask_long) & $address_long);
+	$ip_first = ($address_long ^ $ip_host_first) + 1;
+
+	//caculate last usable address
+	$ip_broadcast_invert = ~$mask_long;
+	$ip_last = ($address_long | $ip_broadcast_invert) - 1;
+
+	$range = array(
+		'first' => long2ip($ip_first),
+		'last' => long2ip($ip_last)
+	);
+
+	return $range;
+}
+
+/**
+ * from two ips find out if there is such an ip
+ *
+ * @param string ip ip wont validate
+ * @param string ip_lower
+ * @param string ip_upper
+ * @return bool true or false if the ip is between the two ips
+ */
+function is_in_network ($ip, $ip_lower, $ip_upper) {
+	if(!isset($ip) || !isset($ip_lower) || !isset($ip_upper)){
+		return false;
+	}
+
+	$ip = (float)sprintf("%u",ip2long($ip));
+	$ip_lower = (float)sprintf("%u",ip2long($ip_lower));
+	$ip_upper = (float)sprintf("%u",ip2long($ip_upper));
+
+	if ($ip >= $ip_lower && $ip <= $ip_upper){
+		return true;
+	} else {
+		return false;
+	}
+}
 ?>