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Support other patch methods

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This commit is contained in:
Yoshi Askharoun
2025-09-01 22:55:01 -07:00
parent 5808fad094
commit 5a38bdd0d7
1 changed files with 64 additions and 53 deletions
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ZuneModCore/Mods/WebservicesMod.cs
+64 -53
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@@ -114,6 +114,46 @@ public class WebservicesMod(ModMetadata metadata) : Mod(metadata), IAsyncInit
}
public override async Task<string?> Apply()
{
var newHost = ((AbstractTextBox)OptionsUI![0]).Value;
var errorMessage = await PatchZuneServices(newHost);
if (errorMessage is not null)
{
// TODO: Fallback to editing hosts file
}
return errorMessage;
}
public override async Task<string?> Reset()
{
string zsDllPath = Path.Combine(ZuneInstallDir, "ZuneService.dll");
try
{
// Copy backup to application folder
File.Copy(Path.Combine(StorageDirectory, "ZuneService.original.dll"), zsDllPath, true);
// Disable all feature overrides affected by new servers
bool setOverrideSuccess = true;
foreach (var feature in _affectedFeatures)
setOverrideSuccess &= SetFeatureOverride(feature, false);
if (setOverrideSuccess != true)
return "Unable to reset feature overrides. The mod was successfully removed, but you may still be able to see it in the Zune software.";
return null;
}
catch (IOException)
{
return $"Unable to replace '{zsDllPath}'. Verify that the Zune software is not running and try again.";
}
catch (Exception ex)
{
return ex.Message;
}
}
private async Task<string?> PatchZuneServices(string newHost)
{
// Verify that ZuneServices.dll exists
FileInfo zsDllInfo = new(Path.Combine(ZuneInstallDir, "ZuneService.dll"));
@@ -133,7 +173,6 @@ public class WebservicesMod(ModMetadata metadata) : Mod(metadata), IAsyncInit
{
// Get and validate replacement host
var oldHost = "zune.net";
var newHost = ((AbstractTextBox)OptionsUI![0]).Value;
if (newHost.Length != oldHost.Length)
{
return $"The new host \"{newHost}\" must have the same length as \"{oldHost}\".";
@@ -189,32 +228,36 @@ public class WebservicesMod(ModMetadata metadata) : Mod(metadata), IAsyncInit
}
}
public override async Task<string?> Reset()
private static string? Patch48Version64Bit(Stream zsDll, string oldHost, string newHost)
{
string zsDllPath = Path.Combine(ZuneInstallDir, "ZuneService.dll");
using BinaryWriter zsDllWriter = new(zsDll);
using BinaryReader zsDllReader = new(zsDll);
// Read URL block as string
zsDllReader.BaseStream.Position = ZUNESERVICES_ENDPOINTS_BLOCK_OFFSET;
var originalEndpointBytes = zsDllReader.ReadBytes(ZUNESERVICES_ENDPOINTS_BLOCK_LENGTH);
var endpointText = Encoding.Unicode.GetString(originalEndpointBytes);
// Try to determine previous host
try
{
// Copy backup to application folder
File.Copy(Path.Combine(StorageDirectory, "ZuneService.original.dll"), zsDllPath, true);
// Disable all feature overrides affected by new servers
bool setOverrideSuccess = true;
foreach (var feature in _affectedFeatures)
setOverrideSuccess &= SetFeatureOverride(feature, false);
if (setOverrideSuccess != true)
return "Unable to reset feature overrides. The mod was successfully removed, but you may still be able to see it in the Zune software.";
return null;
var firstUrl = endpointText[..endpointText.IndexOf('\0')];
oldHost = firstUrl.Substring(11, oldHost.Length);
}
catch (IOException)
catch { }
// Patch ZuneServices.dll to use the new host instead of zune.net
endpointText = endpointText.Replace(oldHost, newHost);
var patchedEndpointBytes = Encoding.Unicode.GetBytes(endpointText);
if (patchedEndpointBytes.Length != originalEndpointBytes.Length)
{
return $"Unable to replace '{zsDllPath}'. Verify that the Zune software is not running and try again.";
}
catch (Exception ex)
{
return ex.Message;
return "Failed to safely overwrite strings in DLL.";
}
zsDllWriter.Seek(ZUNESERVICES_ENDPOINTS_BLOCK_OFFSET, SeekOrigin.Begin);
zsDllWriter.Write(patchedEndpointBytes);
return null;
}
async void OnHostChanged(object? sender, string newHost)
@@ -280,36 +323,4 @@ public class WebservicesMod(ModMetadata metadata) : Mod(metadata), IAsyncInit
metadata.Subtitle = WEBSERVICE_SUBTITLE_UNREACHABLE;
}
}
private static string? Patch48Version64Bit(Stream zsDll, string oldHost, string newHost)
{
using BinaryWriter zsDllWriter = new(zsDll);
using BinaryReader zsDllReader = new(zsDll);
// Read URL block as string
zsDllReader.BaseStream.Position = ZUNESERVICES_ENDPOINTS_BLOCK_OFFSET;
var originalEndpointBytes = zsDllReader.ReadBytes(ZUNESERVICES_ENDPOINTS_BLOCK_LENGTH);
var endpointText = Encoding.Unicode.GetString(originalEndpointBytes);
// Try to determine previous host
try
{
var firstUrl = endpointText[..endpointText.IndexOf('\0')];
oldHost = firstUrl.Substring(11, oldHost.Length);
}
catch { }
// Patch ZuneServices.dll to use the new host instead of zune.net
endpointText = endpointText.Replace(oldHost, newHost);
var patchedEndpointBytes = Encoding.Unicode.GetBytes(endpointText);
if (patchedEndpointBytes.Length != originalEndpointBytes.Length)
{
return "Failed to safely overwrite strings in DLL.";
}
zsDllWriter.Seek(ZUNESERVICES_ENDPOINTS_BLOCK_OFFSET, SeekOrigin.Begin);
zsDllWriter.Write(patchedEndpointBytes);
return null;
}
}