From fe07a61d544007e2cc7e746d354467a9e5885df7 Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Thu, 5 Nov 2020 10:51:20 +0100
Subject: [dnbd3] Allow overriding certain server.conf values for proxy

As requested in issue #3328 you can now override the default values of
certain settings. It's kept simple, labeled "advanced config" with a
little disclaimer, as you can easily enter stupid values that will
render the dnbd3-proxy useless.
---
 modules-available/dnbd3/page.inc.php | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

(limited to 'modules-available/dnbd3/page.inc.php')

diff --git a/modules-available/dnbd3/page.inc.php b/modules-available/dnbd3/page.inc.php
index 7721dac1..9ae7858e 100644
--- a/modules-available/dnbd3/page.inc.php
+++ b/modules-available/dnbd3/page.inc.php
@@ -66,8 +66,15 @@ class Page_Dnbd3 extends Page
 				'fixedip' => $overrideIp,
 			));
 		}
+		$advancedSettings = [];
+		foreach (Request::post('extra', [], 'array') as $name => $value) {
+			$value = preg_replace('/[^0-9]/', '', $value);
+			if ($value === '')
+				continue;
+			$advancedSettings[$name] = $value;
+		}
 		RunMode::setRunMode($server['machineuuid'], 'dnbd3', 'proxy',
-			json_encode(compact('bgr', 'firewall')), false);
+			json_encode(compact('bgr', 'firewall', 'advancedSettings')), false);
 	}
 
 	private function toggleUsage()
@@ -533,6 +540,19 @@ class Page_Dnbd3 extends Page
 		}
 		$modeData = (array)json_decode($rm[$server['machineuuid']]['modedata'], true);
 		$server += $modeData + Dnbd3Util::defaultRunmodeConfig();
+		$extraSettings = $server['advancedSettings'] ?? [];
+		$server['advancedSettings'] = [];
+		foreach (['dnbd3.serverPenalty',
+						'dnbd3.clientPenalty',
+						'dnbd3.bgrMinClient',
+						'dnbd3.bgrWindowSize',
+						'dnbd3.autoFreeDiskSpaceDelay',
+						'limits.maxClients',
+						'limits.maxImages',
+						'limits.maxPayload',
+						'limits.maxReplicationSize'] as $item) {
+			$server['advancedSettings'][] = ['name' => $item, 'value' => $extraSettings[$item] ?? ''];
+		}
 		echo Render::parse('fragment-server-settings', $server);
 	}
 
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