fix: C3 debug logs, H1-H5 image cache, temp files, controller leak, validat...

Matthias Nott

2026-03-25 d6cf9469aa0462d1b8313cc85907176eee1214a2

 lib/screens/settings_screen.dart
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@@ -158,6 +158,11 @@
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                   hintText: '192.168.1.100',
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                 ),
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                 keyboardType: TextInputType.url,
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+                validator: (v) {
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+                  if (v == null || v.trim().isEmpty) return null;
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+                  final ip = RegExp(r'^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$');
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+                  return ip.hasMatch(v.trim()) ? null : 'Enter a valid IP address';
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+                },
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               ),
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               const SizedBox(height: 16),
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@@ -171,6 +176,11 @@
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                   hintText: '10.8.0.1 (OpenVPN static IP)',
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                 ),
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                 keyboardType: TextInputType.url,
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+                validator: (v) {
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+                  if (v == null || v.trim().isEmpty) return null;
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+                  final ip = RegExp(r'^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$');
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+                  return ip.hasMatch(v.trim()) ? null : 'Enter a valid IP address';
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+                },
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               ),
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               const SizedBox(height: 16),
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@@ -198,6 +208,14 @@
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                   hintText: '8765',
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                 ),
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                 keyboardType: TextInputType.number,
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+                validator: (v) {
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+                  if (v == null || v.trim().isEmpty) return 'Required';
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+                  final port = int.tryParse(v.trim());
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+                  if (port == null || port < 1 || port > 65535) {
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+                    return 'Port must be 1–65535';
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+                  }
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+                  return null;
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+                },
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               ),
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               const SizedBox(height: 16),
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..
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@@ -210,6 +228,14 @@
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                 decoration: const InputDecoration(
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                   hintText: 'AA:BB:CC:DD:EE:FF',
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                 ),
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+                validator: (v) {
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+                  if (v == null || v.trim().isEmpty) return null;
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+                  final mac = RegExp(
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+                      r'^[0-9a-fA-F]{2}(:[0-9a-fA-F]{2}){5}$');
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+                  return mac.hasMatch(v.trim())
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+                      ? null
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+                      : 'Enter a valid MAC address (AA:BB:CC:DD:EE:FF)';
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+                },
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               ),
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               const SizedBox(height: 16),
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