Docs, small fixes

docs/SUBNETS.md

@@ -22,7 +22,7 @@ If direct scans are not possible (Wi-Fi Extenders, VPNs and inaccessible network
 
 * **Examples for one and two subnets:**
   * One subnet: `SCAN_SUBNETS = ['192.168.1.0/24 --interface=eth0']`
-  * Two subnets: `SCAN_SUBNETS = ['192.168.1.0/24 --interface=eth0','192.168.1.0/24 --interface=eth1 -vlan=107']`
+  * Two subnets: `SCAN_SUBNETS = ['192.168.1.0/24 --interface=eth0','192.168.1.0/24 --interface=eth1 --vlan=107']`
 
 If you get timeout messages, decrease the network mask (e.g.: from `/16` to `/24`) or increase the `TIMEOUT` setting (e.g.: `ARPSCAN_RUN_TIMEOUT` to `300` (5-minute timeout)) for the plugin and the interval between scans (e.g.: `ARPSCAN_RUN_SCHD` to `*/10 * * * *` (scans every 10 minutes)).
 
@@ -89,7 +89,6 @@ By default, Hyper-V only allows untagged packets through to the VM interface, bl
 2. Within the VM, set up sub-interfaces for each VLAN to enable scanning. On Ubuntu 22.04, Netplan can be used. In /etc/netplan/00-installer-config.yaml, add VLAN definitions:
 
   ```yaml
-
       network:
         ethernets:
           eth0:

front/devices.php

@@ -201,35 +201,61 @@ function mapIndx(oldIndex)
 //  Query total numbers of Devices by status
 //------------------------------------------------------------------------------
 function getDevicesTotals() {
+    maxDelay = 180; //cap at 180 seconds
 
-  // Fetch data via AJAX
+    let maxRetries = Math.ceil(Math.log2(maxDelay)); // Calculate maximum retries to cap at maxDelay seconds
-  $.ajax({
+    let attempt = 0;
-      url: '/php/server/query_json.php',
+    let calledUpdateAPI = false;
-      type: "GET",
-      dataType: "json",
-      data: {
-          file: 'table_devices_tiles.json', // Pass the file parameter
-          nocache: Date.now() // Prevent caching with a timestamp
-      },
-      success: function(response) {
-          if (response && response.data) {
-              resultJSON = response.data[0]; // Assuming the structure {"data": [ ... ]}
-              
-              // Save the result to cache
-              setCache("getDevicesTotals", JSON.stringify(resultJSON));
 
-              // Process the fetched data
+    function fetchDataWithBackoff() {
-              processDeviceTotals(resultJSON);
+        // Calculate the delay (2^attempt seconds, capped at maxDelay seconds)
-          } else {
+        const delay = Math.min(2 ** attempt, maxDelay) * 1000;
-              console.error("Invalid response format from API");
-          }
-      },
-      error: function(xhr, status, error) {
-          console.error("Failed to fetch devices data:", error);
-      }
-  });
 
-  
+        // Attempt to fetch data
+        $.ajax({
+            url: '/php/server/query_json.php',
+            type: "GET",
+            dataType: "json",
+            data: {
+                file: 'table_devices_tiles.json', // Pass the file parameter
+                nocache: Date.now() // Prevent caching with a timestamp
+            },
+            success: function(response) {
+                if (response && response.data) {
+                    const resultJSON = response.data[0]; // Assuming the structure {"data": [ ... ]}
+
+                    // Save the result to cache
+                    setCache("getDevicesTotals", JSON.stringify(resultJSON));
+
+                    // Process the fetched data
+                    processDeviceTotals(resultJSON);
+                } else {
+                    console.error("Invalid response format from API");
+                }
+            },
+            error: function(xhr, status, error) {
+                console.error("Failed to fetch devices data (Attempt " + (attempt + 1) + "):", error);
+
+                //  try updating the API once
+                if(calledUpdateAPI == false)
+                {
+                  calledUpdateAPI = true;
+                  updateApi("devices_tiles");
+                }
+
+                // Retry logic
+                if (attempt < maxRetries) {
+                    attempt++;
+                    setTimeout(fetchDataWithBackoff, delay);
+                } else {
+                    console.error("Maximum retries reached. Unable to fetch devices data.");
+                }
+            }
+        });
+    }
+
+    // Start the first fetch attempt
+    fetchDataWithBackoff();
 }
 
 function processDeviceTotals(devicesData) {

front/php/server/db.php

@@ -10,8 +10,12 @@
 
 //------------------------------------------------------------------------------
 // DB File Path
-$DBFILE = dirname(__FILE__).'/../../../db/app.db';
+// $DBFILE = dirname(__FILE__).'/../../../db/app.db';
-$DBFILE_LOCKED_FILE = dirname(__FILE__).'/../../../log/db_is_locked.log';
+// $DBFILE_LOCKED_FILE = dirname(__FILE__).'/../../../log/db_is_locked.log';
+$scriptDir = realpath(dirname(__FILE__)); // Resolves symlinks to the actual physical path
+$DBFILE = $scriptDir . '/../../../db/app.db';
+$DBFILE_LOCKED_FILE = $scriptDir . '/../../../log/db_is_locked.log';
+
 
 //------------------------------------------------------------------------------
 // check if authenticated
@@ -32,6 +36,14 @@ function SQLite3_connect($trytoreconnect = true, $retryCount = 0) {
         global $db_locked;
         $db_locked = false;
 
+        if (!file_exists($DBFILE)) {
+            die("Database file not found: $DBFILE");
+        }
+        if (!file_exists(dirname($DBFILE_LOCKED_FILE))) {
+            die("Log directory not found: " . dirname($DBFILE_LOCKED_FILE));
+        }
+       
+
         // Write unlock status to the locked file
         file_put_contents($DBFILE_LOCKED_FILE, '0');
 
@@ -70,7 +82,7 @@ class CustomDatabaseWrapper {
     private $maxRetries;
     private $retryDelay;
 
-    public function __construct($filename, $flags = SQLITE3_OPEN_READWRITE | SQLITE3_OPEN_CREATE, $maxRetries = 10, $retryDelay = 1000, $encryptionKey = null) {
+    public function __construct($filename, $flags = SQLITE3_OPEN_READWRITE | SQLITE3_OPEN_CREATE, $maxRetries = 3, $retryDelay = 1000, $encryptionKey = null) {
         $this->sqlite = new SQLite3($filename, $flags, $encryptionKey);
         $this->maxRetries = $maxRetries;
         $this->retryDelay = $retryDelay;
@@ -116,7 +128,7 @@ class CustomDatabaseWrapper {
         file_put_contents($DBFILE_LOCKED_FILE, '0');
 
         $message = 'Error executing query (attempts: ' . $attempts . '), query: ' . $query;        
-        write_notification($message);
+        // write_notification($message);
         error_log("Query failed after {$this->maxRetries} attempts: " . $this->sqlite->lastErrorMsg());        
     }
 

front/php/templates/language/en_us.json

@@ -1,7 +1,7 @@
 {
     "API_CUSTOM_SQL_description": "You can specify a custom SQL query which will generate a JSON file and then expose it via the <a href=\"/api/table_custom_endpoint.json\" target=\"_blank\"><code>table_custom_endpoint.json</code> file endpoint</a>.",
     "API_CUSTOM_SQL_name": "Custom endpoint",
-    "API_TOKEN_description": "API token for secure communication. Generate one or enter any value. It's sent in the request header and used in the <code>SYNC</code> plugin, GraphQL server and other API endpoints. You can use the API endpoints to create custom integrations as descibed in the a href=\"https://github.com/jokob-sk/NetAlertX/blob/main/docs/API.md\" target=\"_blank\">API documentation</a>.",
+    "API_TOKEN_description": "API token for secure communication. Generate one or enter any value. It's sent in the request header and used in the <code>SYNC</code> plugin, GraphQL server and other API endpoints. You can use the API endpoints to create custom integrations as descibed in the <a href=\"https://github.com/jokob-sk/NetAlertX/blob/main/docs/API.md\" target=\"_blank\">API documentation</a>.",
     "API_TOKEN_name": "API token",
     "API_display_name": "API",
     "API_icon": "<i class=\"fa fa-arrow-down-up-across-line\"></i>",

front/php/templates/language/it_it.json

@@ -1,7 +1,7 @@
 {
     "API_CUSTOM_SQL_description": "Puoi specificare una query SQL personalizzata che genererà un file JSON e quindi lo esporrà tramite l'<a href=\"/api/table_custom_endpoint.json\" target=\"_blank\"><code>table_custom_endpoint.json</code>endpoint del file</a>.",
     "API_CUSTOM_SQL_name": "Endpoint personalizzato",
-    "API_TOKEN_description": "Token API per comunicazioni sicure. Generane uno o inserisci un valore qualsiasi. Viene inviato nell'intestazione della richiesta e utilizzato nel plugin <code>SYNC</code>, nel server GraphQL e in altri endpoint API. Puoi utilizzare gli endpoint API per creare integrazioni personalizzate come descritto nella a href=\"https://github.com/jokob-sk/NetAlertX/blob/main/docs/API.md\" target=\"_blank\">documentazione API</a>.",
+    "API_TOKEN_description": "Token API per comunicazioni sicure. Generane uno o inserisci un valore qualsiasi. Viene inviato nell'intestazione della richiesta e utilizzato nel plugin <code>SYNC</code>, nel server GraphQL e in altri endpoint API. Puoi utilizzare gli endpoint API per creare integrazioni personalizzate come descritto nella <a href=\"https://github.com/jokob-sk/NetAlertX/blob/main/docs/API.md\" target=\"_blank\">documentazione API</a>.",
     "API_TOKEN_name": "Token API",
     "API_display_name": "API",
     "API_icon": "<i class=\"fa fa-arrow-down-up-across-line\"></i>",

front/php/templates/language/ru_ru.json

@@ -1,7 +1,7 @@
 {
     "API_CUSTOM_SQL_description": "Вы можете указать собственный SQL-запрос, который будет генерировать файл JSON, а затем предоставлять его через конечную точку файла <a href=\"/api/table_custom_endpoint.json\" target=\"_blank\"><code>table_custom_endpoint.json</code></a>.",
     "API_CUSTOM_SQL_name": "Пользовательская конечная точка",
-    "API_TOKEN_description": "API-токен для безопасной связи. Сгенерируйте его или введите любое значение. Он передается в заголовке запроса и используется в плагине <code>SYNC</code>, сервере GraphQL и других конечных точках API. Вы можете использовать конечные точки API для создания пользовательских интеграций, как описано в a href=\"https://github.com/jokob-sk/NetAlertX/blob/main/docs/API.md\" target=\"_blank\">документации по API</a>.",
+    "API_TOKEN_description": "API-токен для безопасной связи. Сгенерируйте его или введите любое значение. Он передается в заголовке запроса и используется в плагине <code>SYNC</code>, сервере GraphQL и других конечных точках API. Вы можете использовать конечные точки API для создания пользовательских интеграций, как описано в <a href=\"https://github.com/jokob-sk/NetAlertX/blob/main/docs/API.md\" target=\"_blank\">документации по API</a>.",
     "API_TOKEN_name": "API token",
     "API_display_name": "API",
     "API_icon": "<i class=\"fa fa-arrow-down-up-across-line\"></i>",