From 76ac9431b3090d40b30c104a3364247be0c79222 Mon Sep 17 00:00:00 2001
From: Focuslinkstech <45756999+Focuslinkstech@users.noreply.github.com>
Date: Tue, 27 Aug 2024 00:26:52 +0100
Subject: [PATCH] added router online status, also add monitor and also report
 to admin when goes offline, report depend on cron runtime

---
 install/phpnuxbill.sql |  2 ++
 system/cron.php        | 61 ++++++++++++++++++++++++++++++++++++++++++
 system/updates.json    |  4 +++
 ui/ui/routers.tpl      | 50 +++++++++++++++++++++-------------
 4 files changed, 98 insertions(+), 19 deletions(-)

diff --git a/install/phpnuxbill.sql b/install/phpnuxbill.sql
index 659194f0..d6645f60 100644
--- a/install/phpnuxbill.sql
+++ b/install/phpnuxbill.sql
@@ -138,6 +138,8 @@ CREATE TABLE `tbl_routers` (
   `password` varchar(60) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL,
   `description` varchar(256) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT NULL,
   `coordinates` VARCHAR(50) NOT NULL DEFAULT '',
+  `status` ENUM('Online', 'Offline') DEFAULT 'Online',
+  `last_seen` DATETIME,
   `coverage` VARCHAR(8) NOT NULL DEFAULT '0',
   `enabled` tinyint(1) NOT NULL DEFAULT '1' COMMENT '0 disabled'
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;
diff --git a/system/cron.php b/system/cron.php
index caae5c05..a0862d23 100644
--- a/system/cron.php
+++ b/system/cron.php
@@ -78,3 +78,64 @@ foreach ($d as $ds) {
         echo " : ACTIVE \r\n";
     }
 }
+
+$routers = ORM::for_table('tbl_routers')->find_many();
+if (!$routers) {
+    echo "No routers found in the database.\n";
+    exit;
+}
+
+foreach ($routers as $router) {
+    [$ip, $port] = explode(':', $router->ip_address);
+    $isOnline = false;
+
+    try {
+        $timeout = 5;
+        if (is_callable('fsockopen') && false === stripos(ini_get('disable_functions'), 'fsockopen')) {
+            $fsock = @fsockopen($ip, $port, $errno, $errstr, $timeout);
+            if ($fsock) {
+                fclose($fsock);
+                $isOnline = true;
+            } else {
+                throw new Exception("Unable to connect to $ip on port $port using fsockopen: $errstr ($errno)");
+            }
+        } elseif (is_callable('stream_socket_client') && false === stripos(ini_get('disable_functions'), 'stream_socket_client')) {
+            $connection = @stream_socket_client("$ip:$port", $errno, $errstr, $timeout);
+            if ($connection) {
+                fclose($connection);
+                $isOnline = true;
+            } else {
+                throw new Exception("Unable to connect to $ip on port $port using stream_socket_client: $errstr ($errno)");
+            }
+        } else {
+            throw new Exception("Neither fsockopen nor stream_socket_client are enabled on the server.");
+        }
+    } catch (Exception $e) {
+        _log($e->getMessage());
+        $adminEmail = $config['mail_from'];
+        $subject = "Router Monitoring Error Alert";
+        $message = "An error occurred during the monitoring of router $ip: " . (string) $e->getMessage();
+        Message::SendEmail($adminEmail, $subject, $message);
+        sendTelegram($message);
+    }
+
+    if ($isOnline) {
+        $router->last_seen = date('Y-m-d H:i:s');
+        $router->status = 'Online';
+    } else {
+        $router->status = 'Offline';
+        $adminEmail = $config['mail_from'];
+        $subject = "Router Offline Alert";
+        $message = "Dear Administrator,\nThe router with Name: {$router->name} and IP: {$router->ip_address} appears to be offline.\nThe Router was last seen online on: {$router->last_seen}\nPlease check the router's status and take appropriate action.\n\nBest regards,\nRouter Monitoring System";
+        Message::SendEmail($adminEmail, $subject, $message);
+        sendTelegram($message);
+    }
+
+    $router->save();
+}
+
+if ($isCli) {
+    echo "Cronjob finished\n";
+} else {
+    echo "</pre>";
+}
\ No newline at end of file
diff --git a/system/updates.json b/system/updates.json
index 00e214cc..f9f05bf1 100644
--- a/system/updates.json
+++ b/system/updates.json
@@ -151,5 +151,9 @@
     ],
     "2024.8.7" : [
         "ALTER TABLE `tbl_customers` CHANGE `coordinates` `coordinates` VARCHAR(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL DEFAULT '' COMMENT 'Latitude and Longitude coordinates';"
+    ],
+    "2024.8.27" : [
+        "ALTER TABLE `tbl_routers` ADD `status` ENUM('Online', 'Offline') DEFAULT 'Online', AFTER `coordinates`;",
+        "ALTER TABLE `tbl_routers` ADD `last_seen` DATETIME AFTER `status`;"
     ]
 }
\ No newline at end of file
diff --git a/ui/ui/routers.tpl b/ui/ui/routers.tpl
index 526c4446..3422a5b9 100644
--- a/ui/ui/routers.tpl
+++ b/ui/ui/routers.tpl
@@ -40,6 +40,8 @@
                                 <th>{Lang::T('IP Address')}</th>
                                 <th>{Lang::T('Username')}</th>
                                 <th>{Lang::T('Description')}</th>
+                                <th>{Lang::T('Online Status')}</th>
+                                <th>{Lang::T('Last Seen')}</th>
                                 <th>{Lang::T('Status')}</th>
                                 <th>{Lang::T('Manage')}</th>
                                 <th>ID</th>
@@ -47,27 +49,37 @@
                         </thead>
                         <tbody>
                             {foreach $d as $ds}
-                                <tr {if $ds['enabled'] != 1}class="danger" title="disabled" {/if}>
-                                    <td>
+                            <tr {if $ds['enabled'] !=1}class="danger" title="disabled" {/if}>
+                                <td>
                                     {if $ds['coordinates']}
-                                        <a href="https://www.google.com/maps/dir//{$ds['coordinates']}/" target="_blank"
-                                            class="btn btn-default btn-xs" title="{$ds['coordinates']}"><i
-                                                class="glyphicon glyphicon-map-marker"></i></a>
+                                    <a href="https://www.google.com/maps/dir//{$ds['coordinates']}/" target="_blank"
+                                        class="btn btn-default btn-xs" title="{$ds['coordinates']}"><i
+                                            class="glyphicon glyphicon-map-marker"></i></a>
                                     {/if}
-                                    {$ds['name']}</td>
-                                    <td>{$ds['ip_address']}</td>
-                                    <td>{$ds['username']}</td>
-                                    <td>{$ds['description']}</td>
-                                    <td>{if $ds['enabled'] == 1}{Lang::T('Enabled')}{else}{Lang::T('Disabled')}{/if}</td>
-                                    <td>
-                                        <a href="{$_url}routers/edit/{$ds['id']}"
-                                            class="btn btn-info btn-xs">{Lang::T('Edit')}</a>
-                                        <a href="{$_url}routers/delete/{$ds['id']}" id="{$ds['id']}"
-                                            onclick="return confirm('{Lang::T('Delete')}?')"
-                                            class="btn btn-danger btn-xs"><i class="glyphicon glyphicon-trash"></i></a>
-                                    </td>
-                                    <td>{$ds['id']}</td>
-                                </tr>
+                                    {$ds['name']}
+                                </td>
+                                <td style="background-color: black; color: black;"
+                                    onmouseleave="this.style.backgroundColor = 'black';"
+                                    onmouseenter="this.style.backgroundColor = 'white';">{$ds['ip_address']}</td>
+                                <td style="background-color: black; color: black;"
+                                    onmouseleave="this.style.backgroundColor = 'black';"
+                                    onmouseenter="this.style.backgroundColor = 'white';">{$ds['username']}</td>
+                                <td>{$ds['description']}</td>
+                                <td><span
+                                        class="label {if $ds['status'] == 'Online'}label-success {else}label-danger {/if}">{if
+                                        $ds['status'] == 'Online'}{Lang::T('Online')}{else}{Lang::T('Offline')}{/if}</span>
+                                </td>
+                                <td>{$ds['last_seen']}</td>
+                                <td>{if $ds['enabled'] == 1}{Lang::T('Enabled')}{else}{Lang::T('Disabled')}{/if}</td>
+                                <td>
+                                    <a href="{$_url}routers/edit/{$ds['id']}"
+                                        class="btn btn-info btn-xs">{Lang::T('Edit')}</a>
+                                    <a href="{$_url}routers/delete/{$ds['id']}" id="{$ds['id']}"
+                                        onclick="return confirm('{Lang::T('Delete')}?')"
+                                        class="btn btn-danger btn-xs"><i class="glyphicon glyphicon-trash"></i></a>
+                                </td>
+                                <td>{$ds['id']}</td>
+                            </tr>
                             {/foreach}
                         </tbody>
                     </table>