using System; using static PKHeX.Core.LegalityCheckStrings; namespace PKHeX.Core { /// /// Verifies the . /// public sealed class TrainerNameVerifier : Verifier { protected override CheckIdentifier Identifier => CheckIdentifier.Trainer; private static readonly string[] SuspiciousOTNames = { "PKHeX", "PKHeX", }; public override void Verify(LegalityAnalysis data) { var pkm = data.pkm; switch (data.EncounterMatch) { case EncounterTrade: case MysteryGift {IsEgg: false}: case EncounterStatic5N: return; // already verified } var ot = pkm.OT_Name; if (ot.Length == 0) data.AddLine(GetInvalid(LOTShort)); if (pkm.TID == 0 && pkm.SID == 0) { data.AddLine(Get(LOT_IDs0, Severity.Fishy)); } else if (pkm.VC) { if (pkm.SID != 0) data.AddLine(GetInvalid(LOT_SID0Invalid)); } else if (pkm.TID == pkm.SID) { data.AddLine(Get(LOT_IDEqual, Severity.Fishy)); } else if (pkm.TID == 0) { data.AddLine(Get(LOT_TID0, Severity.Fishy)); } else if (pkm.SID == 0) { data.AddLine(Get(LOT_SID0, Severity.Fishy)); } else if (IsOTNameSuspicious(ot)) { data.AddLine(Get(LOTSuspicious, Severity.Fishy)); } else if (IsOTIDSuspicious(pkm.TID, pkm.SID)) { data.AddLine(Get(LOTSuspicious, Severity.Fishy)); } if (pkm.VC) { VerifyOTG1(data); } else if (ot.Length > Legal.GetMaxLengthOT(data.Info.Generation, (LanguageID)pkm.Language)) { if (!IsEdgeCaseLength(pkm, data.EncounterOriginal, ot)) data.AddLine(Get(LOTLong, Severity.Invalid)); } if (ParseSettings.CheckWordFilter) { if (WordFilter.IsFiltered(ot, out string bad)) data.AddLine(GetInvalid($"Wordfilter: {bad}")); if (WordFilter.IsFiltered(pkm.HT_Name, out bad)) data.AddLine(GetInvalid($"Wordfilter: {bad}")); if (ContainsTooManyNumbers(ot, data.Info.Generation)) data.AddLine(GetInvalid("Wordfilter: Too many numbers.")); } } public static bool IsEdgeCaseLength(PKM pkm, IEncounterTemplate e, string ot) { if (e.EggEncounter) { if (e is WC3 wc3 && pkm.IsEgg && wc3.OT_Name == ot) return true; // Fixed OT Mystery Gift Egg bool eggEdge = pkm.IsEgg ? pkm.IsTradedEgg || pkm.Format == 3 : pkm.WasTradedEgg; if (!eggEdge) return false; var len = Legal.GetMaxLengthOT(e.Generation, LanguageID.English); // max case return ot.Length <= len; } if (e is MysteryGift mg && mg.OT_Name.Length == ot.Length) return true; // Mattle Ho-Oh return false; } public void VerifyOTG1(LegalityAnalysis data) { var pkm = data.pkm; string tr = pkm.OT_Name; if (tr.Length == 0) { if (pkm is SK2 {TID: 0, IsRental: true}) { data.AddLine(Get(LOTShort, Severity.Fishy)); } else { data.AddLine(GetInvalid(LOTShort)); return; } } VerifyG1OTWithinBounds(data, tr.AsSpan()); if (pkm.OT_Gender == 1) { if (pkm is ICaughtData2 {CaughtData:0} || (pkm.Format > 2 && pkm.VC1) || data is {EncounterOriginal: {Generation:1} or EncounterStatic2E {IsGift:true}}) data.AddLine(GetInvalid(LG1OTGender)); } } private void VerifyG1OTWithinBounds(LegalityAnalysis data, ReadOnlySpan str) { if (StringConverter12.GetIsG1English(str)) { if (str.Length > 7 && data.EncounterOriginal is not EncounterTradeGB) // OT already verified; GER shuckle has 8 chars data.AddLine(GetInvalid(LOTLong)); } else if (StringConverter12.GetIsG1Japanese(str)) { if (str.Length > 5) data.AddLine(GetInvalid(LOTLong)); } else if (data.pkm.Korean && StringConverter2KOR.GetIsG2Korean(str)) { if (str.Length > 5) data.AddLine(GetInvalid(LOTLong)); } else if (data.EncounterOriginal is not EncounterTrade2) // OT already verified; SPA Shuckle/Voltorb transferred from French can yield 2 inaccessible chars { data.AddLine(GetInvalid(LG1CharOT)); } } private static bool IsOTNameSuspicious(string name) { foreach (var s in SuspiciousOTNames) { if (s.StartsWith(name, StringComparison.InvariantCultureIgnoreCase)) return true; } return false; } public static bool IsOTIDSuspicious(int tid16, int sid16) { if (tid16 == 12345 && sid16 == 54321) return true; // 1234_123456 (SID7_TID7) if (tid16 == 15040 && sid16 == 18831) return true; return false; } public static bool ContainsTooManyNumbers(string str, int originalGeneration) { if (originalGeneration <= 3) return false; // no limit from these generations int max = originalGeneration < 6 ? 4 : 5; if (str.Length <= max) return false; int count = GetNumberCount(str); return count > max; } private static int GetNumberCount(string str) { static bool IsNumber(char c) { if ('0' <= c) return c <= '9'; return (uint)(c - '0') <= 9; } int ctr = 0; foreach (var c in str) { if (IsNumber(c)) ++ctr; } return ctr; } } }