Added support for specifying user in config and then validating install

config.php.default

@@ -14,6 +14,10 @@ $config['memcached']['enable']  = FALSE;
 $config['memcached']['host']    = "localhost";
 $config['memcached']['port']    = 11211;
 
+// This is the user LibreNMS will run as
+//Please ensure this user is created and has the correct permissions to your install
+$config['user'] = 'librenms';
+
 ### Locations - it is recommended to keep the default
 #$config['install_dir']  = "/opt/librenms";
 

html/install.php

@@ -375,6 +375,10 @@ $config_file = <<<"EOD"
 \$config\['db_name'\] = "$dbname";
 \$config\['db'\]\['extension'\] = "mysqli";// mysql or mysqli
 
+// This is the user LibreNMS will run as
+//Please ensure this user is created and has the correct permissions to your install
+\$config['user'] = 'librenms';
+
 ### Memcached config - We use this to store realtime usage
 \$config\['memcached'\]\['enable'\]  = FALSE;
 \$config\['memcached'\]\['host'\]    = "localhost";

validate.php

@@ -59,6 +59,25 @@ require_once 'includes/definitions.inc.php';
 require_once 'includes/functions.php';
 require_once $config['install_dir'].'/includes/alerts.inc.php';
 
+// Let's test the user configured if we have it
+if (isset($config['user'])) {
+    $tmp_user = $config['user'];
+    $tmp_dir = $config['install_dir'];
+    $tmp_log = $config['log_dir'];
+    $find_result = rtrim(`find $tmp_dir \! -user $tmp_user -not -path $tmp_log`);
+    if (!empty($find_result)) {
+        // This isn't just the log directory, let's print the list to the user
+        $files = explode(PHP_EOL, $find_result);
+        if (is_array($files)) {
+            print_fail("We have found some files that are owned by a different user than $tmp_user, this will stop you updating automatically and / or rrd files being updated causing graphs to fail:\n");
+            foreach ($files as $file) {
+                echo "$file\n";
+            }
+            echo "\n";
+        }
+    }
+}
+
 // Run test on MySQL
 $test_db = @mysqli_connect($config['db_host'], $config['db_user'], $config['db_pass'], $config['db_name']);
 if (mysqli_connect_error()) {