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Code Issues Releases Wiki Activity

Remove more no-longer-required checks

Browse Source 
The scenario that remaining guard was trying to protect against is
obviated by and no longer possible after
776fabd77c.
This commit is contained in:
Bartłomiej Dach 2024-10-30 08:44:23 +01:00
parent 0e52797f29
commit 2b0fd3558f
No known key found for this signature in database
2 changed files with 5 additions and 47 deletions
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28
osu.Game.Tests/Beatmaps/BeatmapUpdaterMetadataLookupTest.cs
View File

@ -273,34 +273,6 @@ namespace osu.Game.Tests.Beatmaps
Assert.That(beatmap.OnlineID, Is.EqualTo(654321));
}
[Test]
public void TestMetadataLookupForBeatmapWithoutPopulatedIDAndIncorrectHash([Values] bool preferOnlineFetch)
{
var lookupResult = new OnlineBeatmapMetadata
{
BeatmapID = 654321,
BeatmapStatus = BeatmapOnlineStatus.Ranked,
MD5Hash = @"cafebabe",
};
var targetMock = preferOnlineFetch ? apiMetadataSourceMock : localCachedMetadataSourceMock;
targetMock.Setup(src => src.Available).Returns(true);
targetMock.Setup(src => src.TryLookup(It.IsAny<BeatmapInfo>(), out lookupResult))
.Returns(true);
var beatmap = new BeatmapInfo
{
MD5Hash = @"deadbeef"
};
var beatmapSet = new BeatmapSetInfo(beatmap.Yield());
beatmap.BeatmapSet = beatmapSet;
metadataLookup.Update(beatmapSet, preferOnlineFetch);
Assert.That(beatmap.Status, Is.EqualTo(BeatmapOnlineStatus.None));
Assert.That(beatmap.OnlineID, Is.EqualTo(-1));
}
[Test]
public void TestReturnedMetadataHasDifferentHash([Values] bool preferOnlineFetch)
{

24
osu.Game/Beatmaps/BeatmapUpdaterMetadataLookup.cs
View File

@ -5,7 +5,6 @@ using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using osu.Framework.Logging;
using osu.Framework.Platform;
using osu.Game.Online.API;
@ -44,10 +43,14 @@ namespace osu.Game.Beatmaps
foreach (var beatmapInfo in beatmapSet.Beatmaps)
{
// note that it is KEY that the lookup here only uses MD5 inside
// (see implementations of underlying `IOnlineBeatmapMetadataSource`s).
// anything else like online ID or filename can be manipulated, thus being inherently unreliable,
// thus being unusable here for any purpose.
if (!tryLookup(beatmapInfo, preferOnlineFetch, out var res))
continue;
if (res == null || shouldDiscardLookupResult(res, beatmapInfo))
if (res == null)
{
beatmapInfo.ResetOnlineInfo();
lookupResults.Add(null); // mark lookup failure
@ -83,23 +86,6 @@ namespace osu.Game.Beatmaps
}
}
private bool shouldDiscardLookupResult(OnlineBeatmapMetadata result, BeatmapInfo beatmapInfo)
{
// previously this used to check whether the `OnlineID` of the looked-up beatmap matches the local `OnlineID`.
// unfortunately it appears that historically stable mappers would apply crude hacks to fix unspecified "issues" with submission
// which would amount to reusing online IDs of other beatmaps.
// this means that the online ID in the `.osu` file is not reliable, and this cannot be fixed server-side
// because updating the maps retroactively would break stable (by losing all of users' local scores).
if (beatmapInfo.OnlineID == -1 && result.MD5Hash != beatmapInfo.MD5Hash)
{
Logger.Log($"Discarding metadata lookup result due to mismatching hash (expected: {beatmapInfo.MD5Hash} actual: {result.MD5Hash})", LoggingTarget.Database);
return true;
}
return false;
}
/// <summary>
/// Attempts to retrieve the <see cref="OnlineBeatmapMetadata"/> for the given <paramref name="beatmapInfo"/>.
/// </summary>