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Code Issues Releases Wiki Activity

possible fix for remotely loaded plugins

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RaidMax
2023-05-27 12:15:22 -05:00
parent fd7a7f7756
commit 7f09ce90ac
2 changed files with 93 additions and 76 deletions
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28
Application/Misc/RemoteAssemblyHandler.cs
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@ -13,10 +13,10 @@ namespace IW4MAdmin.Application.Misc
{
public class RemoteAssemblyHandler : IRemoteAssemblyHandler
{
private const int keyLength = 32;
private const int tagLength = 16;
private const int nonceLength = 12;
private const int iterationCount = 10000;
private const int KeyLength = 32;
private const int TagLength = 16;
private const int NonceLength = 12;
private const int IterationCount = 10000;
private readonly ApplicationConfiguration _appconfig;
private readonly ILogger _logger;
@ -30,7 +30,7 @@ namespace IW4MAdmin.Application.Misc
public IEnumerable<Assembly> DecryptAssemblies(string[] encryptedAssemblies)
{
return DecryptContent(encryptedAssemblies)
.Select(decryptedAssembly => Assembly.Load(decryptedAssembly));
.Select(Assembly.Load);
}
public IEnumerable<string> DecryptScripts(string[] encryptedScripts)
@ -38,24 +38,24 @@ namespace IW4MAdmin.Application.Misc
return DecryptContent(encryptedScripts).Select(decryptedScript => Encoding.UTF8.GetString(decryptedScript));
}
private byte[][] DecryptContent(string[] content)
private IEnumerable<byte[]> DecryptContent(string[] content)
{
if (string.IsNullOrEmpty(_appconfig.Id) || string.IsNullOrWhiteSpace(_appconfig.SubscriptionId))
{
_logger.LogWarning($"{nameof(_appconfig.Id)} and {nameof(_appconfig.SubscriptionId)} must be provided to attempt loading remote assemblies/scripts");
return new byte[0][];
return Array.Empty<byte[]>();
}
var assemblies = content.Select(piece =>
{
byte[] byteContent = Convert.FromBase64String(piece);
byte[] encryptedContent = byteContent.Take(byteContent.Length - (tagLength + nonceLength)).ToArray();
byte[] tag = byteContent.Skip(byteContent.Length - (tagLength + nonceLength)).Take(tagLength).ToArray();
byte[] nonce = byteContent.Skip(byteContent.Length - nonceLength).Take(nonceLength).ToArray();
byte[] decryptedContent = new byte[encryptedContent.Length];
var byteContent = Convert.FromBase64String(piece);
var encryptedContent = byteContent.Take(byteContent.Length - (TagLength + NonceLength)).ToArray();
var tag = byteContent.Skip(byteContent.Length - (TagLength + NonceLength)).Take(TagLength).ToArray();
var nonce = byteContent.Skip(byteContent.Length - NonceLength).Take(NonceLength).ToArray();
var decryptedContent = new byte[encryptedContent.Length];
var keyGen = new Rfc2898DeriveBytes(Encoding.UTF8.GetBytes(_appconfig.SubscriptionId), Encoding.UTF8.GetBytes(_appconfig.Id.ToString()), iterationCount, HashAlgorithmName.SHA512);
var encryption = new AesGcm(keyGen.GetBytes(keyLength));
var keyGen = new Rfc2898DeriveBytes(Encoding.UTF8.GetBytes(_appconfig.SubscriptionId), Encoding.UTF8.GetBytes(_appconfig.Id), IterationCount, HashAlgorithmName.SHA512);
var encryption = new AesGcm(keyGen.GetBytes(KeyLength));
try
{