api: Added add_service_for_host endpoint to API (#8113)

* Add add_service_for_host endpoint to API

Signed-off-by: Rémy Jacquin <remy@remyj.fr>

* Change permissions to allow users to modify device

Signed-off-by: Rémy Jacquin <remy@remyj.fr>

AUTHORS.md

@@ -209,6 +209,7 @@ LibreNMS contributors:
 - Rob J. Epping <librenms@renf.us> (robje)
 - Frank Petrilli <frank@petril.li> (frankpetrilli)
 - Joel Kociolek <joel@kociolek.org> (lejoko)
+- Rémy Jacquin <remy@remyj.fr> (remyj38)
 
 Observium was written by:
 - Adam Armstrong

doc/API/Services.md

@@ -106,3 +106,31 @@ Output:
     ]
 }
 ```
+### `add_service_for_host`
+
+Add a service for device
+
+Route: `/api/v0/services/:hostname`
+
+  - id or hostname is the specific device
+
+Input:
+
+  - type: service type
+  - ip: ip of the service
+  - desc: description for the service
+  - param: parameters for the service
+  - ignore: ignore the service for checks
+
+Example:
+```curl
+curl -X POST -d '{"type":"ping","ip": "192.168.1.10","desc":"test ping","param": "-t 10 -c 5"}' -H 'X-Auth-Token: YOURAPITOKENHERE' https://librenms.org/api/v0/services/192.168.1.10
+```
+
+Output:
+```json
+{
+    "status": "ok",
+    "message": "Service ping has been added to device 192.168.1.10 (#10)"
+}
+```

html/api_v0.php

@@ -194,6 +194,7 @@ $app->group(
                     '/services',
                     function () use ($app) {
                         $app->get('/:hostname', 'authToken', 'list_services')->name('get_service_for_host');
+                        $app->post('/:hostname', 'authToken', 'add_service_for_host')->name('add_service_for_host');
                     }
                 );
                 $app->get('/services', 'authToken', 'list_services')->name('list_services');

html/includes/api_functions.inc.php

@@ -1249,7 +1249,7 @@ function list_bills()
     $bill_ref = mres($_GET['ref']);
     $bill_custid = mres($_GET['custid']);
     $param = array();
-    
+
     if (!empty($bill_custid)) {
         $sql    .= '`bill_custid` = ?';
         $param[] = $bill_custid;
@@ -1721,3 +1721,52 @@ function validate_column_list($columns, $tableName)
         $app->stop();
     }
 }
+
+function add_service_for_host()
+{
+    global $config;
+    $app = \Slim\Slim::getInstance();
+    $router = $app->router()->getCurrentRoute()->getParams();
+    $hostname = $router['hostname'];
+    // use hostname as device_id if it's all digits
+    $device_id = ctype_digit($hostname) ? $hostname : getidbyname($hostname);
+    check_device_permission($device_id);
+    $data = json_decode(file_get_contents('php://input'), true);
+    $missing_fields = array();
+
+    // Check if some required fields are empty
+    if (empty($data['type'])) {
+        $missing_fields[] = 'type';
+    }
+    if (empty($data['ip'])) {
+        $missing_fields[] = 'ip';
+    }
+
+    // Print error if required fields are missing
+    if (!empty($missing_fields)) {
+        api_error(400, sprintf("Service field%s %s missing: %s.", ((sizeof($missing_fields)>1)?'s':''), ((sizeof($missing_fields)>1)?'are':'is'), implode(', ', $missing_fields)));
+    }
+    if (!filter_var($data['ip'], FILTER_VALIDATE_IP)) {
+        api_error(400, 'service_ip is not a valid IP address.');
+    }
+
+    // Check if service type exists
+    if (!in_array($data['type'], list_available_services())) {
+        api_error(400, "The service " . $data['type'] . " does not exist.\n Available service types: " . implode(', ', list_available_services()));
+    }
+
+    // Get parameters
+    $service_type = $data['type'];
+    $service_ip   = $data['ip'];
+    $service_desc = $data['desc'] ? mres($data['desc']) : '';
+    $service_param = $data['param'] ? mres($data['param']) : '';
+    $service_ignore = $data['ignore'] ? true : false; // Default false
+
+    // Set the service
+    $service_id = add_service($device_id, $service_type, $service_desc, $service_ip, $service_param, (int)$service_ignore);
+    if ($service_id != false) {
+        api_success_noresult(201, "Service $service_type has been added to device $hostname (#$service_id)");
+    } else {
+        api_error(500, 'Failed to add the service');
+    }
+}

html/pages/addsrv.inc.php

@@ -16,12 +16,8 @@ if ($_SESSION['userlevel'] < '10') {
             }
         }
     }
-
-    foreach (scandir($config['nagios_plugins']) as $file) {
-        if (substr($file, 0, 6) === 'check_') {
-            $check_name = substr($file, 6);
-            $servicesform .= "<option value='$check_name'>$check_name</option>";
-        }
+    foreach (list_available_services() as $current_service) {
+        $servicesform .= "<option value='$current_service'>$current_service</option>";
     }
 
     foreach (dbFetchRows('SELECT * FROM `devices` ORDER BY `hostname`') as $device) {

includes/services.inc.php

@@ -306,3 +306,20 @@ function check_service($command)
 
     return array ($status, $response, $metrics);
 }
+
+/**
+ * List all available services from nagios plugins directory
+ *
+ * @return array
+ */
+function list_available_services()
+{
+    global $config;
+    $services = array();
+    foreach (scandir($config['nagios_plugins']) as $file) {
+        if (substr($file, 0, 6) === 'check_') {
+            $services[] = substr($file, 6);
+        }
+    }
+    return $services;
+}