From 48846297dcd1f6f5ae4b09c295b69f2958cf4713 Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Thu, 3 Nov 2022 16:17:53 +0100
Subject: [dozmod] Add field to configure maximum VM image size

---
 modules-available/dozmod/lang/de/template-tags.json   | 1 +
 modules-available/dozmod/lang/en/template-tags.json   | 5 +++--
 modules-available/dozmod/pages/runtimeconfig.inc.php  | 6 +++++-
 modules-available/dozmod/templates/runtimeconfig.html | 6 ++++++
 4 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/modules-available/dozmod/lang/de/template-tags.json b/modules-available/dozmod/lang/de/template-tags.json
index 8f8b06e1..338e8e42 100644
--- a/modules-available/dozmod/lang/de/template-tags.json
+++ b/modules-available/dozmod/lang/de/template-tags.json
@@ -70,6 +70,7 @@
     "lang_maxLectureVisibility": "Sp\u00e4testes Enddatum einer Veranstaltung (Tage in der Zukunft)",
     "lang_maxLocationsPerLecture": "Max. explizite Orte pro Veranstaltung",
     "lang_maxTransfers": "Maximale Zahl gleichzeitiger Up-\/Downloads pro Benutzer",
+    "lang_maxVmHddSizeGb": "Maximale VM-Gr\u00f6\u00dfe (GiB, 0 = kein Limit)",
     "lang_minimized": "Minimiert",
     "lang_miscOptions": "Verschiedene Einstellungen",
     "lang_modified": "Modifiziert",
diff --git a/modules-available/dozmod/lang/en/template-tags.json b/modules-available/dozmod/lang/en/template-tags.json
index c052551c..b741e03d 100644
--- a/modules-available/dozmod/lang/en/template-tags.json
+++ b/modules-available/dozmod/lang/en/template-tags.json
@@ -67,9 +67,10 @@
     "lang_mailDescription": "Fill in the following fields if you want to notify tutors\/professors\/lecturers about expiring VMs and lectures. If you leave one of the required fields blank, the feature will be disabled.",
     "lang_mailTemplates": "E-Mail Templates",
     "lang_maxImageValidity": "New VM validity (days)",
-    "lang_maxLectureVisibility": "Max time lecture end date may lie in the future (days)",
+    "lang_maxLectureVisibility": "Max. time lecture end date may lie in the future (days)",
     "lang_maxLocationsPerLecture": "Max. explicit locations per lecture",
-    "lang_maxTransfers": "Max concurrent transfers per user",
+    "lang_maxTransfers": "Max. concurrent transfers per user",
+    "lang_maxVmHddSizeGb": "Max. VM size (GiB, 0 = unlimited)",
     "lang_minimized": "Minimized",
     "lang_miscOptions": "Misc options",
     "lang_modified": "modified",
diff --git a/modules-available/dozmod/pages/runtimeconfig.inc.php b/modules-available/dozmod/pages/runtimeconfig.inc.php
index 50023414..5f441980 100644
--- a/modules-available/dozmod/pages/runtimeconfig.inc.php
+++ b/modules-available/dozmod/pages/runtimeconfig.inc.php
@@ -37,7 +37,7 @@ class SubPage
 			];
 			foreach ($params as $type => $list) {
 				foreach ($list as $field => $limits) {
-					$default = isset($limits['default']) ? $limits['default'] : false;
+					$default = $limits['default'] ?? false;
 					$value = Request::post($field, $default, $type);
 					if (isset($limits['min']) && $value < $limits['min']) {
 						$value = $limits['min'];
@@ -53,6 +53,8 @@ class SubPage
 			if (!in_array($data['serverSideCopy'], ['OFF', 'ON', 'AUTO', 'USER'])) {
 				$data['serverSideCopy'] = 'OFF';
 			}
+			// VM size limit
+			$data['vmSizeLimit'] = ceil(max(0, Request::post('vmSizeLimit', '0', 'float') * 1024 * 1024 * 1024));
 
 			/* ensure types */
 			settype($data['defaultLecturePermissions']['edit'], 'boolean');
@@ -62,6 +64,7 @@ class SubPage
 			settype($data['defaultImagePermissions']['link'], 'boolean');
 			settype($data['defaultImagePermissions']['download'], 'boolean');
 
+			// Write to DB - java server app wil reload this periodically
 			$data = json_encode($data);
 			Database::exec('INSERT INTO sat.configuration (parameter, value)'
 				. ' VALUES (:param, :value)'
@@ -110,6 +113,7 @@ class SubPage
 			if (isset($runtimeConf['serverSideCopy'])) {
 				$runtimeConf[$runtimeConf['serverSideCopy'] . '_selected'] = 'selected';
 			}
+			$runtimeConf['vmSizeLimit'] = ceil(($runtimeConf['vmSizeLimit'] ?? 0) / (1024 * 1024 * 1024));
 		}
 		$runtimeConf['allowedSave'] = User::hasPermission("runtimeconfig.save");
 		Render::addTemplate('runtimeconfig', $runtimeConf);
diff --git a/modules-available/dozmod/templates/runtimeconfig.html b/modules-available/dozmod/templates/runtimeconfig.html
index db895f6d..1540042d 100644
--- a/modules-available/dozmod/templates/runtimeconfig.html
+++ b/modules-available/dozmod/templates/runtimeconfig.html
@@ -94,6 +94,12 @@
 							<input name="maxTransfers" class="form-control" type="number" value="{{maxTransfers}}" min="1" max="10" pattern="^\d+$">
 						</td>
 					</tr>
+					<tr class="input-group">
+						<td class="input-group-addon">{{lang_maxVmHddSizeGb}}</td>
+						<td>
+							<input name="vmSizeLimit" class="form-control" type="number" value="{{vmSizeLimit}}" min="0" max="65535" pattern="\d+">
+						</td>
+					</tr>
 				</table>
 			</fieldset>
 			<br>
-- 
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