Initial commit: Complete open-source Decal rebuild
All 5 phases of the open-source Decal rebuild: Phase 1: 14 decompiled .NET projects (Interop.*, Adapter, FileService, DecalUtil) Phase 2: 10 native DLLs rewritten as C# COM servers with matching GUIDs - DecalDat, DHS, SpellFilter, DecalInput, DecalNet, DecalFilters - Decal.Core, DecalControls, DecalRender, D3DService Phase 3: C++ shims for Inject.DLL (D3D9 hooking) and LauncherHook.DLL Phase 4: DenAgent WinForms tray application Phase 5: WiX installer and build script 25 C# projects building with 0 errors. Native C++ projects require VS 2022 + Windows SDK (x86). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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erik
commit
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1382 changed files with 170725 additions and 0 deletions
408
Managed/Decal.DenAgent/AgentForm.cs
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408
Managed/Decal.DenAgent/AgentForm.cs
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using System;
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using System.Diagnostics;
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using System.IO;
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using System.Windows.Forms;
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using Microsoft.Win32;
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namespace Decal.DenAgent
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{
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/// <summary>
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/// Main plugin management dialog. Shows all registered Decal plugins/services
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/// with enable/disable toggle, drag-drop reordering, and version display.
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/// Replaces the MFC CDenAgentDlg class.
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/// </summary>
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internal sealed class AgentForm : Form
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{
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private readonly ListView _pluginList;
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private readonly ImageList _imageList;
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private readonly Button _btnClose;
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private readonly Button _btnAdd;
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private readonly Button _btnRemove;
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private readonly Button _btnRefresh;
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private readonly Button _btnOptions;
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private readonly Label _lblMessages;
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private readonly Label _lblMemLocs;
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// Plugin group definitions matching the original DenAgent
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private static readonly PluginGroup[] Groups =
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{
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new("Plugins", "Plugins", 0),
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new("Network Filters", "NetworkFilters", 1),
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new("File Filters", "FileFilters", 1),
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new("Services", "Services", 2),
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new("Surrogates", "Surrogates", 3),
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new("Input Actions", "InputActions", 4),
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};
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public AgentForm()
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{
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Text = "Decal Agent " + GetAgentVersion();
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Size = new System.Drawing.Size(420, 360);
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FormBorderStyle = FormBorderStyle.FixedDialog;
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MaximizeBox = false;
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StartPosition = FormStartPosition.CenterScreen;
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// Image list for enabled/disabled/group icons
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_imageList = new ImageList { ImageSize = new System.Drawing.Size(16, 16) };
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// Index 0 = group (folder), 1 = enabled (check), 2 = disabled (x)
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_imageList.Images.Add(CreateColorIcon(System.Drawing.Color.SteelBlue)); // 0: group
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_imageList.Images.Add(CreateColorIcon(System.Drawing.Color.ForestGreen)); // 1: enabled
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_imageList.Images.Add(CreateColorIcon(System.Drawing.Color.Gray)); // 2: disabled
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// Plugin list view
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_pluginList = new ListView
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{
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Location = new System.Drawing.Point(10, 35),
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Size = new System.Drawing.Size(295, 230),
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View = View.Details,
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FullRowSelect = true,
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SmallImageList = _imageList,
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HeaderStyle = ColumnHeaderStyle.None,
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AllowDrop = true
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};
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_pluginList.Columns.Add("Component", 210);
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_pluginList.Columns.Add("Version", 80, HorizontalAlignment.Right);
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_pluginList.MouseClick += OnPluginListClick;
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Controls.Add(_pluginList);
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// Description label
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var lblDesc = new Label
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{
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Text = "Choose the Plugins you'd like to run.",
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Location = new System.Drawing.Point(10, 10),
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Size = new System.Drawing.Size(390, 20)
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};
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Controls.Add(lblDesc);
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// Buttons
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int btnX = 320;
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_btnClose = AddButton("Close", btnX, 300, (s, e) => Close());
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_btnRefresh = AddButton("Refresh", btnX, 270, (s, e) => LoadPluginList());
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_btnAdd = AddButton("Add", btnX, 35, (s, e) => OnAddPlugin());
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_btnRemove = AddButton("Remove", btnX, 65, (s, e) => OnRemovePlugin());
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_btnOptions = AddButton("Options", btnX, 105, (s, e) => OnShowOptions());
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// Status labels
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_lblMessages = new Label
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{
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Text = "Messages: -",
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Location = new System.Drawing.Point(10, 275),
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Size = new System.Drawing.Size(300, 16),
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Font = new System.Drawing.Font("Segoe UI", 8f)
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};
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Controls.Add(_lblMessages);
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_lblMemLocs = new Label
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{
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Text = "Memory Locations: -",
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Location = new System.Drawing.Point(10, 293),
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Size = new System.Drawing.Size(300, 16),
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Font = new System.Drawing.Font("Segoe UI", 8f)
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};
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Controls.Add(_lblMemLocs);
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AcceptButton = _btnClose;
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LoadPluginList();
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UpdateFileInfo();
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}
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private Button AddButton(string text, int x, int y, EventHandler click)
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{
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var btn = new Button
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{
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Text = text,
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Location = new System.Drawing.Point(x, y),
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Size = new System.Drawing.Size(80, 25)
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};
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btn.Click += click;
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Controls.Add(btn);
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return btn;
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}
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private void LoadPluginList()
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{
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_pluginList.BeginUpdate();
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_pluginList.Items.Clear();
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foreach (var group in Groups)
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{
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// Add group header
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var groupItem = new ListViewItem(group.DisplayName, 0)
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{
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Tag = null // Group headers have no tag
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};
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groupItem.SubItems.Add("");
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_pluginList.Items.Add(groupItem);
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// Enumerate plugins in this group from registry
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string keyPath = $@"SOFTWARE\Decal\{group.RegistryKey}";
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try
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{
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using var key = Registry.LocalMachine.OpenSubKey(keyPath);
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if (key == null) continue;
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foreach (string clsid in key.GetSubKeyNames())
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{
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using var pluginKey = key.OpenSubKey(clsid);
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if (pluginKey == null) continue;
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string name = pluginKey.GetValue("FriendlyName") as string
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?? pluginKey.GetValue("") as string
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?? clsid;
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bool enabled = true;
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object enabledVal = pluginKey.GetValue("Enabled");
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if (enabledVal is int ei)
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enabled = ei != 0;
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var info = new PluginInfo(clsid, group.RegistryKey, name, enabled);
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int imageIdx = enabled ? 1 : 2;
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var item = new ListViewItem(" " + name, imageIdx)
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{
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Tag = info,
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IndentCount = 1
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};
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// Get version from COM registration
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string version = GetPluginVersion(clsid);
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item.SubItems.Add(version);
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_pluginList.Items.Add(item);
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}
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}
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catch { /* Skip groups we can't read */ }
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}
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_pluginList.EndUpdate();
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}
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private void OnPluginListClick(object sender, MouseEventArgs e)
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{
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var hitTest = _pluginList.HitTest(e.Location);
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if (hitTest.Item == null) return;
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var info = hitTest.Item.Tag as PluginInfo;
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if (info == null) return; // Group header
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// Toggle enabled state when clicking the icon area
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if (e.X < 40)
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{
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info.Enabled = !info.Enabled;
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hitTest.Item.ImageIndex = info.Enabled ? 1 : 2;
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// Save to registry
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try
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{
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string keyPath = $@"SOFTWARE\Decal\{info.GroupKey}\{info.Clsid}";
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using var key = Registry.LocalMachine.OpenSubKey(keyPath, writable: true);
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key?.SetValue("Enabled", info.Enabled ? 1 : 0, RegistryValueKind.DWord);
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}
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catch { /* May need admin rights */ }
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}
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}
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private void OnAddPlugin()
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{
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using var dlg = new OpenFileDialog
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{
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Title = "Select Plugin DLL",
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Filter = "DLL files (*.dll)|*.dll|All files (*.*)|*.*",
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CheckFileExists = true
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};
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if (dlg.ShowDialog(this) != DialogResult.OK)
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return;
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// Register the DLL as a COM server and add to Decal registry
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string dllPath = dlg.FileName;
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try
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{
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var psi = new ProcessStartInfo
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{
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FileName = "regsvr32.exe",
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Arguments = $"/s \"{dllPath}\"",
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UseShellExecute = true,
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Verb = "runas"
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};
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Process.Start(psi)?.WaitForExit();
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LoadPluginList();
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}
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catch (Exception ex)
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{
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MessageBox.Show($"Failed to register plugin: {ex.Message}", "Error",
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MessageBoxButtons.OK, MessageBoxIcon.Error);
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}
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}
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private void OnRemovePlugin()
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{
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if (_pluginList.SelectedItems.Count == 0) return;
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var item = _pluginList.SelectedItems[0];
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var info = item.Tag as PluginInfo;
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if (info == null) return;
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var result = MessageBox.Show(
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$"Remove plugin '{info.Name}'?\nThis will unregister it from Decal.",
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"Remove Plugin",
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MessageBoxButtons.OKCancel, MessageBoxIcon.Warning);
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if (result != DialogResult.OK) return;
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try
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{
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// Check for uninstaller
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string keyPath = $@"SOFTWARE\Decal\{info.GroupKey}\{info.Clsid}";
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using var key = Registry.LocalMachine.OpenSubKey(keyPath);
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string uninstaller = key?.GetValue("Uninstaller") as string;
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if (!string.IsNullOrEmpty(uninstaller))
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{
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Process.Start(uninstaller);
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}
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else
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{
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// Just delete the registry entry
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string parentPath = $@"SOFTWARE\Decal\{info.GroupKey}";
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using var parentKey = Registry.LocalMachine.OpenSubKey(parentPath, writable: true);
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parentKey?.DeleteSubKeyTree(info.Clsid, false);
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}
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LoadPluginList();
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}
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catch (Exception ex)
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{
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MessageBox.Show($"Failed to remove plugin: {ex.Message}", "Error",
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MessageBoxButtons.OK, MessageBoxIcon.Error);
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}
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}
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private void OnShowOptions()
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{
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using var dlg = new OptionsForm();
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dlg.ShowDialog(this);
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}
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private static string GetPluginVersion(string clsid)
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{
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try
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{
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string keyPath = $@"CLSID\{clsid}\InprocServer32";
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using var key = Registry.ClassesRoot.OpenSubKey(keyPath);
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if (key == null) return "<Not registered>";
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string dllPath = key.GetValue("") as string ?? "";
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// .NET assemblies register as mscoree.dll; get the CodeBase instead
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if (dllPath.EndsWith("mscoree.dll", StringComparison.OrdinalIgnoreCase))
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{
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string codeBase = key.GetValue("CodeBase") as string ?? "";
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if (codeBase.StartsWith("file:///", StringComparison.OrdinalIgnoreCase))
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dllPath = codeBase.Substring(8).Replace('/', '\\');
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}
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if (!File.Exists(dllPath))
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return "<No DLL>";
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var vi = FileVersionInfo.GetVersionInfo(dllPath);
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return vi.FileVersion ?? "<No Version>";
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}
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catch
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{
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return "<Error>";
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}
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}
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private void UpdateFileInfo()
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{
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// Check for XML data files used by Decal
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string agentPath = GetAgentPath();
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if (string.IsNullOrEmpty(agentPath)) return;
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string messagesFile = Path.Combine(agentPath, "messages.xml");
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string memlocsFile = Path.Combine(agentPath, "memlocs.xml");
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_lblMessages.Text = "Messages: " + (File.Exists(messagesFile)
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? File.GetLastWriteTime(messagesFile).ToString("yyyy-MM-dd HH:mm")
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: "Not found");
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_lblMemLocs.Text = "Memory Locations: " + (File.Exists(memlocsFile)
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? File.GetLastWriteTime(memlocsFile).ToString("yyyy-MM-dd HH:mm")
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: "Not found");
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}
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private static string GetAgentPath()
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{
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try
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{
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using var key = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Decal\Agent");
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return key?.GetValue("AgentPath") as string ?? "";
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}
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catch { return ""; }
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}
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private static string GetAgentVersion()
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{
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try
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{
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var vi = FileVersionInfo.GetVersionInfo(
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System.Reflection.Assembly.GetExecutingAssembly().Location);
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return vi.FileVersion ?? "0.0.0.0";
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}
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catch { return "0.0.0.0"; }
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}
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private static System.Drawing.Icon CreateColorIcon(System.Drawing.Color color)
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{
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using var bmp = new System.Drawing.Bitmap(16, 16);
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using var g = System.Drawing.Graphics.FromImage(bmp);
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g.Clear(System.Drawing.Color.Transparent);
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using var brush = new System.Drawing.SolidBrush(color);
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g.FillEllipse(brush, 2, 2, 12, 12);
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return System.Drawing.Icon.FromHandle(bmp.GetHicon());
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}
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protected override void OnFormClosing(FormClosingEventArgs e)
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{
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if (e.CloseReason == CloseReason.UserClosing)
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{
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e.Cancel = true;
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Hide();
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}
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else
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{
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base.OnFormClosing(e);
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}
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}
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private class PluginGroup
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{
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public string DisplayName { get; }
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public string RegistryKey { get; }
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public int IconIndex { get; }
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public PluginGroup(string displayName, string registryKey, int iconIndex)
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{
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DisplayName = displayName;
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RegistryKey = registryKey;
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IconIndex = iconIndex;
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}
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}
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private class PluginInfo
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{
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public string Clsid { get; }
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public string GroupKey { get; }
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public string Name { get; }
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public bool Enabled { get; set; }
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public PluginInfo(string clsid, string groupKey, string name, bool enabled)
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{
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Clsid = clsid;
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GroupKey = groupKey;
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Name = name;
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Enabled = enabled;
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}
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}
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}
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}
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