diff --git a/osu.Game/Beatmaps/Formats/LegacyBeatmapDecoder.cs b/osu.Game/Beatmaps/Formats/LegacyBeatmapDecoder.cs index 4f19fbd323..5988b05084 100644 --- a/osu.Game/Beatmaps/Formats/LegacyBeatmapDecoder.cs +++ b/osu.Game/Beatmaps/Formats/LegacyBeatmapDecoder.cs @@ -280,8 +280,8 @@ namespace osu.Game.Beatmaps.Formats { string[] split = line.Split(','); - double time = getOffsetTime(double.Parse(split[0].Trim(), NumberFormatInfo.InvariantInfo)); - double beatLength = double.Parse(split[1].Trim(), NumberFormatInfo.InvariantInfo); + double time = getOffsetTime(Parsing.ParseDouble(split[0].Trim())); + double beatLength = Parsing.ParseDouble(split[1].Trim()); double speedMultiplier = beatLength < 0 ? 100.0 / -beatLength : 1; TimeSignatures timeSignature = TimeSignatures.SimpleQuadruple; diff --git a/osu.Game/Beatmaps/Formats/LegacyParser.cs b/osu.Game/Beatmaps/Formats/LegacyParser.cs new file mode 100644 index 0000000000..777a85dc93 --- /dev/null +++ b/osu.Game/Beatmaps/Formats/LegacyParser.cs @@ -0,0 +1,45 @@ +// Copyright (c) ppy Pty Ltd . Licensed under the MIT Licence. +// See the LICENCE file in the repository root for full licence text. + +using System; +using System.Globalization; + +namespace osu.Game.Beatmaps.Formats +{ + /// + /// Helper methods to parse from string to number and perform very basic validation. + /// + public static class Parsing + { + public const int MAX_COORDINATE_VALUE = 65536; + + public const double MAX_PARSE_VALUE = int.MaxValue; + + public static double ParseFloat(string input, float parseLimit = (float)MAX_PARSE_VALUE) + { + var output = float.Parse(input, CultureInfo.InvariantCulture); + if (output < -parseLimit) throw new FormatException("Value is too low"); + if (output > parseLimit) throw new FormatException("Value is too high"); + + return output; + } + + public static double ParseDouble(string input, double parseLimit = MAX_PARSE_VALUE) + { + var output = double.Parse(input, CultureInfo.InvariantCulture); + if (output < -parseLimit) throw new FormatException("Value is too low"); + if (output > parseLimit) throw new FormatException("Value is too high"); + + return output; + } + + public static int ParseInt(string input, int parseLimit = (int)MAX_PARSE_VALUE) + { + var output = int.Parse(input, CultureInfo.InvariantCulture); + if (output < -parseLimit) throw new FormatException("Value is too low"); + if (output > parseLimit) throw new FormatException("Value is too high"); + + return output; + } + } +} diff --git a/osu.Game/Rulesets/Objects/Legacy/ConvertHitObjectParser.cs b/osu.Game/Rulesets/Objects/Legacy/ConvertHitObjectParser.cs index e397139843..4d36b45989 100644 --- a/osu.Game/Rulesets/Objects/Legacy/ConvertHitObjectParser.cs +++ b/osu.Game/Rulesets/Objects/Legacy/ConvertHitObjectParser.cs @@ -5,7 +5,6 @@ using osuTK; using osu.Game.Rulesets.Objects.Types; using System; using System.Collections.Generic; -using System.Globalization; using System.IO; using osu.Game.Beatmaps.Formats; using osu.Game.Audio; @@ -46,9 +45,11 @@ namespace osu.Game.Rulesets.Objects.Legacy { string[] split = text.Split(','); - Vector2 pos = new Vector2((int)Convert.ToSingle(split[0], CultureInfo.InvariantCulture), (int)Convert.ToSingle(split[1], CultureInfo.InvariantCulture)); + Vector2 pos = new Vector2((int)Parsing.ParseFloat(split[0], Parsing.MAX_COORDINATE_VALUE), (int)Parsing.ParseFloat(split[1], Parsing.MAX_COORDINATE_VALUE)); - ConvertHitObjectType type = (ConvertHitObjectType)int.Parse(split[3]); + double startTime = Parsing.ParseDouble(split[2]) + Offset; + + ConvertHitObjectType type = (ConvertHitObjectType)Parsing.ParseInt(split[3]); int comboOffset = (int)(type & ConvertHitObjectType.ComboOffset) >> 4; type &= ~ConvertHitObjectType.ComboOffset; @@ -56,7 +57,7 @@ namespace osu.Game.Rulesets.Objects.Legacy bool combo = type.HasFlag(ConvertHitObjectType.NewCombo); type &= ~ConvertHitObjectType.NewCombo; - var soundType = (LegacySoundType)int.Parse(split[4]); + var soundType = (LegacySoundType)Parsing.ParseInt(split[4]); var bankInfo = new SampleBankInfo(); HitObject result = null; @@ -107,7 +108,7 @@ namespace osu.Game.Rulesets.Objects.Legacy } string[] temp = t.Split(':'); - points[pointIndex++] = new Vector2((int)Convert.ToDouble(temp[0], CultureInfo.InvariantCulture), (int)Convert.ToDouble(temp[1], CultureInfo.InvariantCulture)) - pos; + points[pointIndex++] = new Vector2((int)Parsing.ParseDouble(temp[0], Parsing.MAX_COORDINATE_VALUE), (int)Parsing.ParseDouble(temp[1], Parsing.MAX_COORDINATE_VALUE)) - pos; } // osu-stable special-cased colinear perfect curves to a CurveType.Linear @@ -116,7 +117,7 @@ namespace osu.Game.Rulesets.Objects.Legacy if (points.Length == 3 && pathType == PathType.PerfectCurve && isLinear(points)) pathType = PathType.Linear; - int repeatCount = Convert.ToInt32(split[6], CultureInfo.InvariantCulture); + int repeatCount = Parsing.ParseInt(split[6]); if (repeatCount > 9000) throw new ArgumentOutOfRangeException(nameof(repeatCount), @"Repeat count is way too high"); @@ -125,7 +126,7 @@ namespace osu.Game.Rulesets.Objects.Legacy repeatCount = Math.Max(0, repeatCount - 1); if (split.Length > 7) - length = Convert.ToDouble(split[7], CultureInfo.InvariantCulture); + length = Math.Max(0, Parsing.ParseDouble(split[7])); if (split.Length > 10) readCustomSampleBanks(split[10], bankInfo); @@ -184,7 +185,9 @@ namespace osu.Game.Rulesets.Objects.Legacy } else if (type.HasFlag(ConvertHitObjectType.Spinner)) { - result = CreateSpinner(new Vector2(512, 384) / 2, combo, comboOffset, Convert.ToDouble(split[5], CultureInfo.InvariantCulture) + Offset); + double endTime = Math.Max(startTime, Parsing.ParseDouble(split[5]) + Offset); + + result = CreateSpinner(new Vector2(512, 384) / 2, combo, comboOffset, endTime); if (split.Length > 6) readCustomSampleBanks(split[6], bankInfo); @@ -193,12 +196,12 @@ namespace osu.Game.Rulesets.Objects.Legacy { // Note: Hold is generated by BMS converts - double endTime = Convert.ToDouble(split[2], CultureInfo.InvariantCulture); + double endTime = Math.Max(0, Parsing.ParseDouble(split[2])); if (split.Length > 5 && !string.IsNullOrEmpty(split[5])) { string[] ss = split[5].Split(':'); - endTime = Convert.ToDouble(ss[0], CultureInfo.InvariantCulture); + endTime = Parsing.ParseDouble(ss[0]); readCustomSampleBanks(string.Join(":", ss.Skip(1)), bankInfo); } @@ -211,7 +214,7 @@ namespace osu.Game.Rulesets.Objects.Legacy return null; } - result.StartTime = Convert.ToDouble(split[2], CultureInfo.InvariantCulture) + Offset; + result.StartTime = startTime; if (result.Samples.Count == 0) result.Samples = convertSoundType(soundType, bankInfo); @@ -222,7 +225,7 @@ namespace osu.Game.Rulesets.Objects.Legacy } catch (FormatException) { - throw new FormatException("One or more hit objects were malformed."); + return null; } } @@ -233,8 +236,8 @@ namespace osu.Game.Rulesets.Objects.Legacy string[] split = str.Split(':'); - var bank = (LegacyBeatmapDecoder.LegacySampleBank)int.Parse(split[0]); - var addbank = (LegacyBeatmapDecoder.LegacySampleBank)int.Parse(split[1]); + var bank = (LegacyBeatmapDecoder.LegacySampleBank)Parsing.ParseInt(split[0]); + var addbank = (LegacyBeatmapDecoder.LegacySampleBank)Parsing.ParseInt(split[1]); string stringBank = bank.ToString().ToLowerInvariant(); if (stringBank == @"none") @@ -247,10 +250,10 @@ namespace osu.Game.Rulesets.Objects.Legacy bankInfo.Add = string.IsNullOrEmpty(stringAddBank) ? stringBank : stringAddBank; if (split.Length > 2) - bankInfo.CustomSampleBank = int.Parse(split[2]); + bankInfo.CustomSampleBank = Parsing.ParseInt(split[2]); if (split.Length > 3) - bankInfo.Volume = int.Parse(split[3]); + bankInfo.Volume = Parsing.ParseInt(split[3]); bankInfo.Filename = split.Length > 4 ? split[4] : null; }