/// <summary>
/// Checks if the game is not patched
/// </summary>
/// <returns>True if the game is not patched or false if it is. Null is returned if the game file can not be found or if neither the original or patched bytes are found.</returns>
public bool?GetIsOriginal()
{
RL.Logger?.LogInformationSource("Getting if game file is patched or original...");
try
{
// Get the file size
var fileSize = (uint)GameFile.GetSize().Bytes;
// Find matching patch
var patch = Patches.FirstOrDefault(x => x.FileSize == fileSize);
if (patch == null)
{
RL.Logger?.LogWarningSource("The game file size does not match any available patch");
return(null);
}
// Create a buffer
byte[] currentBytes = new byte[patch.OriginalBytes.Length];
// Open the file as a stream
using (Stream stream = File.Open(GameFile, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
// Set the position
stream.Position = patch.PatchOffset;
// Read the bytes
var read = stream.Read(currentBytes, 0, currentBytes.Length);
RL.Logger?.LogInformationSource($"{read}/{currentBytes.Length} bytes were read from the game file");
}
// Check if they match
if (currentBytes.SequenceEqual(patch.OriginalBytes))
{
RL.Logger?.LogInformationSource("The game file was detected as original");
return(true);
}
else if (currentBytes.SequenceEqual(patch.PatchedBytes))
{
RL.Logger?.LogInformationSource("The game file was detected as patched");
return(false);
}
else
{
RL.Logger?.LogWarningSource("The game file was detected as unknown");
return(null);
}
}
catch (Exception ex)
{
ex.HandleError("Getting if game is patched");
return(null);
}
}
public PatchState GetPatchState()
{
Logger.Info("Getting if game file is patched or original");
try
{
// Get the file size
uint fileSize = (uint)GameFile.GetSize().Bytes;
// Find matching patch
int patchIndex = Patches.FindItemIndex(x => x.FileSize == fileSize);
if (patchIndex == -1)
{
Logger.Warn("The game file size does not match any available patch");
return(null);
}
FilePatcher_Patch patch = Patches[patchIndex];
// IDEA: Check all patch entries?
// Check the first patch entry
FilePatcher_Patch.PatchEntry patchEntry = patch.PatchEntries[0];
// Create a buffer
byte[] currentBytes = new byte[patchEntry.OriginalBytes.Length];
// Open the file as a stream
using (Stream stream = File.Open(GameFile, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
// Set the position
stream.Position = patchEntry.PatchOffset;
// Read the bytes
int read = stream.Read(currentBytes, 0, currentBytes.Length);
Logger.Info("{0}/{1} bytes were read from the game file", read, currentBytes.Length);
}
// Check if they match the original
if (currentBytes.SequenceEqual(patchEntry.OriginalBytes))
{
Logger.Info("The game file was detected as original");
return(new PatchState(patchIndex, false));
}
// Check if it's patches, checking revisions starting with newest first
bool isOutdated = false;
foreach (FilePatcher_Patch.PatchedBytesRevision revision in patchEntry.PatchRevisions.OrderByDescending(x => x.Version))
{
if (currentBytes.SequenceEqual(revision.Bytes))
{
Logger.Info($"The game file was detected as patched with version {revision.Version}");
return(new PatchState(patchIndex, true, revision.Version, isOutdated));
}
isOutdated = true;
}
Logger.Warn("The game file patch state could not be determined");
return(null);
}
catch (Exception ex)
{
Logger.Error(ex, "Getting if game is patched");
return(null);
}
}