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osu-lazer/osu.Desktop/LegacyIpc/LegacyTcpIpcProvider.cs

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// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
using System;
using System.Linq;
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using Newtonsoft.Json.Linq;
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using osu.Framework.Logging;
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using osu.Framework.Platform;
using osu.Game.Beatmaps;
using osu.Game.Beatmaps.Legacy;
using osu.Game.Rulesets;
using osu.Game.Rulesets.Catch;
using osu.Game.Rulesets.Mania;
using osu.Game.Rulesets.Mods;
using osu.Game.Rulesets.Osu;
using osu.Game.Rulesets.Taiko;
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namespace osu.Desktop.LegacyIpc
{
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/// <summary>
/// Provides IPC to legacy osu! clients.
/// </summary>
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public class LegacyTcpIpcProvider : TcpIpcProvider
{
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private static readonly Logger logger = Logger.GetLogger("legacy-ipc");
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public LegacyTcpIpcProvider()
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: base(45357)
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{
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MessageReceived += msg =>
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{
try
{
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logger.Add("Processing legacy IPC message...");
logger.Add($" {msg.Value}", LogLevel.Debug);
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// See explanation in LegacyIpcMessage for why this is done this way.
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var legacyData = ((JObject)msg.Value).ToObject<LegacyIpcMessage.Data>();
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object value = parseObject((JObject)legacyData!.MessageData, legacyData.MessageType);
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return new LegacyIpcMessage
{
Value = onLegacyIpcMessageReceived(value)
};
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}
catch (Exception ex)
{
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logger.Add($"Processing IPC message failed: {msg.Value}", exception: ex);
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return null;
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}
};
}
private object parseObject(JObject value, string type)
{
switch (type)
{
case nameof(LegacyIpcDifficultyCalculationRequest):
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return value.ToObject<LegacyIpcDifficultyCalculationRequest>()
?? throw new InvalidOperationException($"Failed to parse request {value}");
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case nameof(LegacyIpcDifficultyCalculationResponse):
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return value.ToObject<LegacyIpcDifficultyCalculationResponse>()
?? throw new InvalidOperationException($"Failed to parse request {value}");
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default:
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throw new ArgumentException($"Unsupported object type {type}");
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}
}
private object onLegacyIpcMessageReceived(object message)
{
switch (message)
{
case LegacyIpcDifficultyCalculationRequest req:
try
{
WorkingBeatmap beatmap = new FlatWorkingBeatmap(req.BeatmapFile);
var ruleset = beatmap.BeatmapInfo.Ruleset.CreateInstance();
Mod[] mods = ruleset.ConvertFromLegacyMods((LegacyMods)req.Mods).ToArray();
return new LegacyIpcDifficultyCalculationResponse
{
StarRating = ruleset.CreateDifficultyCalculator(beatmap).Calculate(mods).StarRating
};
}
catch
{
return new LegacyIpcDifficultyCalculationResponse();
}
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default:
throw new ArgumentException($"Unsupported message type {message}");
}
}
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private static Ruleset getLegacyRulesetFromID(int rulesetId)
{
switch (rulesetId)
{
case 0:
return new OsuRuleset();
case 1:
return new TaikoRuleset();
case 2:
return new CatchRuleset();
case 3:
return new ManiaRuleset();
default:
throw new ArgumentException("Invalid ruleset id");
}
}
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}
}