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ngct: Fix services and stub calls (#1756)

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Ac_K 2020-12-10 03:08:28 +01:00 • committed by GitHub
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commit c0b9ac6653
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5 changed files with 139 additions and 9 deletions
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Ryujinx.HLE/HOS/Services/Ngct/NgctServer.cs Normal file
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using Ryujinx.Common.Logging;
using System.Text;
namespace Ryujinx.HLE.HOS.Services.Ngct
{
static class NgctServer
{
public static ResultCode Match(ServiceCtx context)
{
// NOTE: Service load the values of sys:set ngc.t!functionality_override_enabled and ngc.t!auto_reload_enabled in internal fields.
// Then it checks if ngc.t!functionality_override_enabled is enabled and if sys:set GetT is == 2.
// If both conditions are true, it does this following code. Since we currently stub it, it's fine to don't check settings service values.
long bufferPosition = context.Request.PtrBuff[0].Position;
long bufferSize = context.Request.PtrBuff[0].Size;
bool isMatch = false;
string text = "";
if (bufferSize != 0)
{
if (bufferSize > 1024)
{
isMatch = true;
}
else
{
byte[] buffer = new byte[bufferSize];
context.Memory.Read((ulong)bufferPosition, buffer);
text = Encoding.ASCII.GetString(buffer);
// NOTE: Ngct use the archive 0100000000001034 which contains a words table. This is pushed on Chinese Switchs using Bcat service.
// This call check if the string match with entries in the table and return the result if there is one (or more).
// Since we don't want to hide bad words. It's fine to returns false here.
isMatch = false;
}
}
Logger.Stub?.PrintStub(LogClass.ServiceNgct, new { isMatch, text });
context.ResponseData.Write(isMatch);
return ResultCode.Success;
}
public static ResultCode Filter(ServiceCtx context)
{
// NOTE: Service load the values of sys:set ngc.t!functionality_override_enabled and ngc.t!auto_reload_enabled in internal fields.
// Then it checks if ngc.t!functionality_override_enabled is enabled and if sys:set GetT is == 2.
// If both conditions are true, it does this following code. Since we currently stub it, it's fine to don't check settings service values.
long bufferPosition = context.Request.PtrBuff[0].Position;
long bufferSize = context.Request.PtrBuff[0].Size;
long bufferFilteredPosition = context.Request.RecvListBuff[0].Position;
string text = "";
string textFiltered = "";
if (bufferSize != 0)
{
if (bufferSize > 1024)
{
textFiltered = new string('*', text.Length);
context.Memory.Write((ulong)bufferFilteredPosition, Encoding.ASCII.GetBytes(textFiltered));
}
else
{
byte[] buffer = new byte[bufferSize];
context.Memory.Read((ulong)bufferPosition, buffer);
// NOTE: Ngct use the archive 0100000000001034 which contains a words table. This is pushed on Chinese Switchs using Bcat service.
// This call check if the string contains words which are in the table then returns the same string with each matched words replaced by '*'.
// Since we don't want to hide bad words. It's fine to returns the same string.
textFiltered = text = Encoding.ASCII.GetString(buffer);
context.Memory.Write((ulong)bufferFilteredPosition, buffer);
}
}
Logger.Stub?.PrintStub(LogClass.ServiceNgct, new { text, textFiltered });
return ResultCode.Success;
}
}
}