From 17e3a05af3428372c20a83cbc36b2ce884d3f5e7 Mon Sep 17 00:00:00 2001
From: stilez <stilez@users.noreply.github.com>
Date: Tue, 31 May 2016 06:22:02 +0100
Subject: Add "delete entry" for ARP table

Useful function in some circumstances - seems no reason not to have it.

Uses IP rather than hostname since not all ARP entries have hostnames.

Probably should also have "delete all" but not done that.
(cherry picked from commit 6ea0d41e3c094a0977e7f0d022ec74276280b8ff)
---
 src/usr/local/www/diag_arp.php | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

(limited to 'src')

diff --git a/src/usr/local/www/diag_arp.php b/src/usr/local/www/diag_arp.php
index 69bc740..f7bdff4 100644
--- a/src/usr/local/www/diag_arp.php
+++ b/src/usr/local/www/diag_arp.php
@@ -68,6 +68,23 @@
 
 require("guiconfig.inc");
 
+// delete arp entry
+if (isset($_GET['deleteentry'])) {
+	$ip = $_GET['deleteentry'];
+	if (is_ipaddrv4($ip)) {
+		$ret = mwexec("arp -d " . $_GET['deleteentry'], true);
+	} else {
+		$ret = 1;
+	}
+	if ($ret) {
+		$savemsg = sprintf(gettext("%s is not a valid IPv4 address or could not be deleted."), $ip);
+		$savemsgtype = 'alert-warning';
+	} else {
+		$savemsg = sprintf(gettext("The ARP cache entry for %s has been deleted."), $ip);
+		$savemsgtype = 'success';
+	}
+}
+
 function leasecmp($a, $b) {
 	return strcmp($a[$_GET['order']], $b[$_GET['order']]);
 }
@@ -286,6 +303,10 @@ function _getHostName($mac, $ip) {
 $pgtitle = array(gettext("Diagnostics"), gettext("ARP Table"));
 include("head.inc");
 
+// Handle save msg if defined
+if ($savemsg) {
+	print_info_box(htmlentities($savemsg), $savemsgtype);
+}
 ?>
 
 <!-- On modern hardware the table will load so fast you may never see this! -->
@@ -346,6 +367,7 @@ $mac_man = load_mac_manufacturer_table();
 				<th><?= gettext("IP address")?></th>
 				<th><?= gettext("MAC address")?></th>
 				<th><?= gettext("Hostname")?></th>
+				<th data-sortable="false"><?=gettext("Actions")?></th>
 			</tr>
 		</thead>
 		<tbody>
@@ -367,6 +389,9 @@ $mac_man = load_mac_manufacturer_table();
 	?>
 				</td>
 				<td><?=trim(str_replace("Z_ ", "", $entry['dnsresolve']))?></td>
+				<td>
+					<a class="fa fa-trash" title="<?=gettext('Delete arp cache entry')?>"	href="diag_arp.php?deleteentry=<?=$entry['ip']?>"></a>
+				</td>
 			</tr>
 		<?php endforeach?>
 		</tbody>
-- 
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