PKHeX/PKHeX.Core/Saves/SaveUtil.cs
Kurt eb505303bb Fix vc backups acting like gb era saves
ends with .dat only works if the real file ends with dat
load the filename data after stripping off the bak filename data
#1787
2018-01-28 00:03:49 -08:00

1161 lines
54 KiB
C#

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
namespace PKHeX.Core
{
/// <summary>
/// Logic for <see cref="SaveFile"/> data loading and manipulation.
/// </summary>
public static class SaveUtil
{
public const int BEEF = 0x42454546;
public const int SIZE_G7USUM = 0x6CC00;
public const int SIZE_G7SM = 0x6BE00;
public const int SIZE_G6XY = 0x65600;
public const int SIZE_G6ORAS = 0x76000;
public const int SIZE_G6ORASDEMO = 0x5A00;
public const int SIZE_G5RAW = 0x80000;
public const int SIZE_G5BW = 0x24000;
public const int SIZE_G5B2W2 = 0x26000;
public const int SIZE_G4BR = 0x380000;
public const int SIZE_G4RAW = 0x80000;
public const int SIZE_G3BOX = 0x76000;
public const int SIZE_G3BOXGCI = 0x76040; // +64 if has GCI data
public const int SIZE_G3COLO = 0x60000;
public const int SIZE_G3COLOGCI = 0x60040; // +64 if has GCI data
public const int SIZE_G3XD = 0x56000;
public const int SIZE_G3XDGCI = 0x56040; // +64 if has GCI data
public const int SIZE_G3RAW = 0x20000;
public const int SIZE_G3RAWHALF = 0x10000;
public const int SIZE_G2RAW_U = 0x8000;
public const int SIZE_G2VC_U = 0x8010;
public const int SIZE_G2BAT_U = 0x802C;
public const int SIZE_G2EMU_U = 0x8030;
public const int SIZE_G2RAW_J = 0x10000;
public const int SIZE_G2VC_J = 0x10010;
public const int SIZE_G2BAT_J = 0x1002C;
public const int SIZE_G2EMU_J = 0x10030;
public const int SIZE_G1RAW = 0x8000;
public const int SIZE_G1BAT = 0x802C;
private static readonly HashSet<int> SIZES_2 = new HashSet<int>
{
SIZE_G2RAW_U, SIZE_G2VC_U, SIZE_G2BAT_U, SIZE_G2EMU_U, SIZE_G2RAW_J, SIZE_G2BAT_J, SIZE_G2EMU_J, SIZE_G2VC_J,
};
private static readonly HashSet<int> SIZES = new HashSet<int>(SIZES_2)
{
SIZE_G7SM, SIZE_G7USUM,
SIZE_G6XY, SIZE_G6ORAS, SIZE_G6ORASDEMO,
SIZE_G5RAW, SIZE_G5BW, SIZE_G5B2W2,
SIZE_G4BR, SIZE_G4RAW,
SIZE_G3BOX, SIZE_G3BOXGCI, SIZE_G3COLO, SIZE_G3COLOGCI, SIZE_G3XD, SIZE_G3XDGCI, SIZE_G3RAW, SIZE_G3RAWHALF,
// SIZES_2 covers gen2 sizes since there's so many
SIZE_G1RAW, SIZE_G1BAT
};
private static readonly byte[] FOOTER_DSV = Encoding.ASCII.GetBytes("|-DESMUME SAVE-|");
internal static readonly string[] HEADER_COLO = { "GC6J","GC6E","GC6P" }; // NTSC-J, NTSC-U, PAL
internal static readonly string[] HEADER_XD = { "GXXJ","GXXE","GXXP" }; // NTSC-J, NTSC-U, PAL
internal static readonly string[] HEADER_RSBOX = { "GPXJ","GPXE","GPXP" }; // NTSC-J, NTSC-U, PAL
/// <summary>Determines the generation of the given save data.</summary>
/// <param name="data">Save data of which to determine the generation</param>
/// <returns>Version Identifier or Invalid if type cannot be determined.</returns>
private static GameVersion GetSAVGeneration(byte[] data)
{
if (GetIsG1SAV(data) != GameVersion.Invalid)
return GameVersion.Gen1;
if (GetIsG2SAV(data) != GameVersion.Invalid)
return GameVersion.Gen2;
if (GetIsG3SAV(data) != GameVersion.Invalid)
return GameVersion.Gen3;
if (GetIsG4SAV(data) != GameVersion.Invalid)
return GameVersion.Gen4;
if (GetIsG5SAV(data) != GameVersion.Invalid)
return GameVersion.Gen5;
if (GetIsG6SAV(data) != GameVersion.Invalid)
return GameVersion.Gen6;
if (GetIsG7SAV(data) != GameVersion.Invalid)
return GameVersion.Gen7;
if (GetIsG3COLOSAV(data) != GameVersion.Invalid)
return GameVersion.COLO;
if (GetIsG3XDSAV(data) != GameVersion.Invalid)
return GameVersion.XD;
if (GetIsG3BOXSAV(data) != GameVersion.Invalid)
return GameVersion.RSBOX;
if (GetIsG4BRSAV(data) != GameVersion.Invalid)
return GameVersion.BATREV;
return GameVersion.Invalid;
}
/// <summary>
/// Determines if a Gen2 Pokémon List is Invalid
/// </summary>
/// <param name="data">Save data</param>
/// <param name="offset">Offset the list starts at</param>
/// <param name="listCount">Max count of Pokémon in the list</param>
/// <returns>True if a valid list, False otherwise</returns>
private static bool IsG12ListValid(byte[] data, int offset, int listCount)
{
byte num_entries = data[offset];
return num_entries <= listCount && data[offset + 1 + num_entries] == 0xFF;
}
/// <summary>Determines the type of 1st gen save</summary>
/// <param name="data">Save data of which to determine the type</param>
/// <returns>Version Identifier or Invalid if type cannot be determined.</returns>
internal static GameVersion GetIsG1SAV(byte[] data)
{
if (data.Length != SIZE_G1RAW && data.Length != SIZE_G1BAT)
return GameVersion.Invalid;
// Check if it's not an american save or a japanese save
if (!(GetIsG1SAVU(data) || GetIsG1SAVJ(data)))
return GameVersion.Invalid;
// I can't actually detect which game version, because it's not stored anywhere.
// If you can think of anything to do here, please implement :)
return GameVersion.RBY;
}
/// <summary>Determines if 1st gen save is non-japanese</summary>
/// <param name="data">Save data of which to determine the region</param>
/// <returns>True if a valid non-japanese save, False otherwise.</returns>
private static bool GetIsG1SAVU(byte[] data)
{
return IsG12ListValid(data, 0x2F2C, 20) && IsG12ListValid(data, 0x30C0, 20);
}
/// <summary>Determines if 1st gen save is japanese</summary>
/// <param name="data">Save data of which to determine the region</param>
/// <returns>True if a valid japanese save, False otherwise.</returns>
internal static bool GetIsG1SAVJ(byte[] data)
{
return IsG12ListValid(data, 0x2ED5, 30) && IsG12ListValid(data, 0x302D, 30);
}
/// <summary>Determines the type of 2nd gen save</summary>
/// <param name="data">Save data of which to determine the type</param>
/// <returns>Version Identifier or Invalid if type cannot be determined.</returns>
internal static GameVersion GetIsG2SAV(byte[] data)
{
if (!SIZES_2.Contains(data.Length))
return GameVersion.Invalid;
// Check if it's not an american save or a japanese save
GameVersion result;
if ((result = GetIsG2SAVU(data)) != GameVersion.Invalid)
return result;
if ((result = GetIsG2SAVJ(data)) != GameVersion.Invalid)
return result;
if ((result = GetIsG2SAVK(data)) != GameVersion.Invalid)
return result;
return GameVersion.Invalid;
}
/// <summary>Determines if 2nd gen save is non-japanese</summary>
/// <param name="data">Save data of which to determine the region</param>
/// <returns>True if a valid international save, False otherwise.</returns>
private static GameVersion GetIsG2SAVU(byte[] data)
{
if (IsG12ListValid(data, 0x288A, 20) && IsG12ListValid(data, 0x2D6C, 20))
return GameVersion.GS;
if (IsG12ListValid(data, 0x2865, 20) && IsG12ListValid(data, 0x2D10, 20))
return GameVersion.C;
return GameVersion.Invalid;
}
/// <summary>Determines if 2nd gen save is japanese</summary>
/// <param name="data">Save data of which to determine the region</param>
/// <returns>True if a valid Japanese save, False otherwise.</returns>
internal static GameVersion GetIsG2SAVJ(byte[] data)
{
if (!IsG12ListValid(data, 0x2D10, 30))
return GameVersion.Invalid;
if (IsG12ListValid(data, 0x283E, 30))
return GameVersion.GS;
if (IsG12ListValid(data, 0x281A, 30))
return GameVersion.C;
return GameVersion.Invalid;
}
/// <summary>Determines if 2nd gen save is Korean</summary>
/// <param name="data">Save data of which to determine the region</param>
/// <returns>True if a valid Korean save, False otherwise.</returns>
internal static GameVersion GetIsG2SAVK(byte[] data)
{
if (IsG12ListValid(data, 0x2DAE, 20) && IsG12ListValid(data, 0x28CC, 20))
return GameVersion.GS;
return GameVersion.Invalid;
}
/// <summary>Determines the type of 3rd gen save</summary>
/// <param name="data">Save data of which to determine the type</param>
/// <returns>Version Identifier or Invalid if type cannot be determined.</returns>
internal static GameVersion GetIsG3SAV(byte[] data)
{
if (data.Length != SIZE_G3RAW && data.Length != SIZE_G3RAWHALF)
return GameVersion.Invalid;
// check the save file(s)
int count = data.Length/SIZE_G3RAWHALF;
for (int s = 0; s < count; s++)
{
int ofs = 0xE000*s;
int[] BlockOrder = new int[14];
for (int i = 0; i < 14; i++)
BlockOrder[i] = BitConverter.ToInt16(data, i * 0x1000 + 0xFF4 + ofs);
if (BlockOrder.Any(i => i > 0xD || i < 0))
continue;
// Detect RS/E/FRLG
// Section 0 stores Game Code @ 0x00AC; 0 for RS, 1 for FRLG, else for Emerald
int Block0 = Array.IndexOf(BlockOrder, 0);
// Sometimes not all blocks are present (start of game), yielding multiple block0's.
// Real 0th block comes before block1.
if (BlockOrder[0] == 1 && Block0 != BlockOrder.Length - 1)
continue;
if (BlockOrder.Count(v => v == 0) == BlockOrder.Length)
continue;
uint GameCode = BitConverter.ToUInt32(data, Block0 * 0x1000 + 0xAC + ofs);
switch (GameCode)
{
case 0: return GameVersion.RS;
case 1: return GameVersion.FRLG;
case uint.MaxValue: return GameVersion.Unknown; // what a hack
default: return BitConverter.ToUInt32(data, Block0 * 0x1000 + 0x1F4 + ofs) == 0
? GameVersion.RS
: GameVersion.E;
}
}
return GameVersion.Invalid;
}
/// <summary>Determines the type of 3rd gen Box RS</summary>
/// <param name="data">Save data of which to determine the type</param>
/// <returns>Version Identifier or Invalid if type cannot be determined.</returns>
internal static GameVersion GetIsG3BOXSAV(byte[] data)
{
if (data.Length != SIZE_G3BOX && data.Length != SIZE_G3BOXGCI)
return GameVersion.Invalid;
byte[] sav = data;
// Verify first checksum
ushort chk = 0; // initial value
var ofs = data.Length - SIZE_G3BOX + 0x2000;
for (int i = 0x4; i < 0x1FFC; i += 2)
chk += BigEndian.ToUInt16(sav, ofs + i);
ushort chkA = chk;
ushort chkB = (ushort)(0xF004 - chkA);
ushort CHK_A = BigEndian.ToUInt16(sav, ofs + 0);
ushort CHK_B = BigEndian.ToUInt16(sav, ofs + 2);
return CHK_A == chkA && CHK_B == chkB ? GameVersion.RSBOX : GameVersion.Invalid;
}
/// <summary>Determines the type of 3rd gen Colosseum</summary>
/// <param name="data">Save data of which to determine the type</param>
/// <returns>Version Identifier or Invalid if type cannot be determined.</returns>
internal static GameVersion GetIsG3COLOSAV(byte[] data)
{
if (data.Length != SIZE_G3COLO && data.Length != SIZE_G3COLOGCI)
return GameVersion.Invalid;
// Check the intro bytes for each save slot
int offset = data.Length - SIZE_G3COLO;
for (int i = 0; i < 3; i++)
{
var ofs = 0x6000 + offset + 0x1E000 * i;
if (BitConverter.ToUInt32(data, ofs) != 0x00000101)
return GameVersion.Invalid;
}
return GameVersion.COLO;
}
/// <summary>Determines the type of 3rd gen XD</summary>
/// <param name="data">Save data of which to determine the type</param>
/// <returns>Version Identifier or Invalid if type cannot be determined.</returns>
internal static GameVersion GetIsG3XDSAV(byte[] data)
{
if (data.Length != SIZE_G3XD && data.Length != SIZE_G3XDGCI)
return GameVersion.Invalid;
// Check the intro bytes for each save slot
int offset = data.Length - SIZE_G3XD;
for (int i = 0; i < 2; i++)
{
var ofs = 0x6000 + offset + 0x28000 * i;
if ((BitConverter.ToUInt32(data, ofs) & 0xFFFE_FFFF) != 0x00000101)
return GameVersion.Invalid;
}
return GameVersion.XD;
}
/// <summary>Determines the type of 4th gen save</summary>
/// <param name="data">Save data of which to determine the type</param>
/// <returns>Version Identifier or Invalid if type cannot be determined.</returns>
internal static GameVersion GetIsG4SAV(byte[] data)
{
if (data.Length != SIZE_G4RAW)
return GameVersion.Invalid;
// General Block Checksum
if (BitConverter.ToUInt16(data, 0xC0FE) == CRC16_CCITT(data, 0, 0xC0EC))
return GameVersion.DP;
if (BitConverter.ToUInt16(data, 0xCF2A) == CRC16_CCITT(data, 0, 0xCF18))
return GameVersion.Pt;
if (BitConverter.ToUInt16(data, 0xF626) == CRC16_CCITT(data, 0, 0xF618))
return GameVersion.HGSS;
bool validSequence(byte[] pattern, int shift = 0)
{
int ofs = BitConverter.ToUInt16(pattern, 0) - 0xC + shift;
for (int i = 0; i < 10; i++)
if (data[i + ofs] != pattern[i])
return false;
return true;
}
// General Block Checksum is invalid, check for block identifiers
if (validSequence(BlockPattern_General_DP))
return GameVersion.DP;
if (validSequence(BlockPattern_General_Pt))
return GameVersion.Pt;
if (validSequence(BlockPattern_General_HS))
return GameVersion.HGSS;
// Check the other save
if (validSequence(BlockPattern_General_DP, 0x40000))
return GameVersion.DP;
if (validSequence(BlockPattern_General_Pt, 0x40000))
return GameVersion.Pt;
if (validSequence(BlockPattern_General_HS, 0x40000))
return GameVersion.HGSS;
return GameVersion.Invalid;
}
private static readonly byte[] BlockPattern_General_DP = { 0x00, 0xC1, 0x00, 0x00, 0x23, 0x06, 0x06, 0x20, 0x00, 0x00 };
private static readonly byte[] BlockPattern_General_Pt = { 0x2C, 0xCF, 0x00, 0x00, 0x23, 0x06, 0x06, 0x20, 0x00, 0x00 };
private static readonly byte[] BlockPattern_General_HS = { 0x28, 0xF6, 0x00, 0x00, 0x23, 0x06, 0x06, 0x20, 0x00, 0x00 };
/// <summary>Determines the type of 4th gen Battle Revolution</summary>
/// <param name="data">Save data of which to determine the type</param>
/// <returns>Version Identifier or Invalid if type cannot be determined.</returns>
internal static GameVersion GetIsG4BRSAV(byte[] data)
{
if (data.Length != SIZE_G4BR)
return GameVersion.Invalid;
byte[] sav = SAV4BR.DecryptPBRSaveData(data);
return SAV4BR.IsChecksumsValid(sav) ? GameVersion.BATREV : GameVersion.Invalid;
}
/// <summary>Determines the type of 5th gen save</summary>
/// <param name="data">Save data of which to determine the type</param>
/// <returns>Version Identifier or Invalid if type cannot be determined.</returns>
internal static GameVersion GetIsG5SAV(byte[] data)
{
if (data.Length != SIZE_G5RAW)
return GameVersion.Invalid;
ushort chk1 = BitConverter.ToUInt16(data, SIZE_G5BW - 0x100 + 0x8C + 0xE);
ushort actual1 = CRC16_CCITT(data, SIZE_G5BW - 0x100, 0x8C);
if (chk1 == actual1)
return GameVersion.BW;
ushort chk2 = BitConverter.ToUInt16(data, SIZE_G5B2W2 - 0x100 + 0x94 + 0xE);
ushort actual2 = CRC16_CCITT(data, SIZE_G5B2W2 - 0x100, 0x94);
if (chk2 == actual2)
return GameVersion.B2W2;
return GameVersion.Invalid;
}
/// <summary>Determines the type of 6th gen save</summary>
/// <param name="data">Save data of which to determine the type</param>
/// <returns>Version Identifier or Invalid if type cannot be determined.</returns>
private static GameVersion GetIsG6SAV(byte[] data)
{
if (!new []{SIZE_G6XY, SIZE_G6ORAS, SIZE_G6ORASDEMO}.Contains(data.Length))
return GameVersion.Invalid;
if (BitConverter.ToUInt32(data, data.Length - 0x1F0) != BEEF)
return GameVersion.Invalid;
switch (data.Length)
{
case SIZE_G6XY:
return GameVersion.XY;
case SIZE_G6ORASDEMO:
return GameVersion.ORASDEMO;
case SIZE_G6ORAS:
return GameVersion.ORAS;
}
return GameVersion.Invalid;
}
/// <summary>Determines the type of 7th gen save</summary>
/// <param name="data">Save data of which to determine the type</param>
/// <returns>Version Identifier or Invalid if type cannot be determined.</returns>
private static GameVersion GetIsG7SAV(byte[] data)
{
if (data.Length != SIZE_G7SM && data.Length != SIZE_G7USUM)
return GameVersion.Invalid;
if (BitConverter.ToUInt32(data, data.Length - 0x1F0) != BEEF)
return GameVersion.Invalid;
switch (data.Length)
{
case SIZE_G7SM:
return GameVersion.SM;
case SIZE_G7USUM:
return GameVersion.USUM;
}
return GameVersion.Invalid;
}
/// <summary>Creates an instance of a SaveFile using the given save data.</summary>
/// <param name="data">Save data from which to create a SaveFile.</param>
/// <returns>An appropriate type of save file for the given data, or null if the save data is invalid.</returns>
public static SaveFile GetVariantSAV(byte[] data)
{
// Pre-check for header/footer signatures
SaveFile sav;
byte[] header = new byte[0], footer = new byte[0];
CheckHeaderFooter(ref data, ref header, ref footer);
switch (GetSAVGeneration(data))
{
// Main Games
case GameVersion.Gen1: sav = new SAV1(data); break;
case GameVersion.Gen2: sav = new SAV2(data); break;
case GameVersion.Gen3: sav = new SAV3(data); break;
case GameVersion.Gen4: sav = new SAV4(data); break;
case GameVersion.Gen5: sav = new SAV5(data); break;
case GameVersion.Gen6: sav = new SAV6(data); break;
case GameVersion.Gen7: sav = new SAV7(data); break;
// Side Games
case GameVersion.COLO: sav = new SAV3Colosseum(data); break;
case GameVersion.XD: sav = new SAV3XD(data); break;
case GameVersion.RSBOX: sav = new SAV3RSBox(data); break;
case GameVersion.BATREV: sav = new SAV4BR(data); break;
// No pattern matched
default: return null;
}
sav.Header = header;
sav.Footer = footer;
return sav;
}
public static SaveFile GetVariantSAV(SAV3GCMemoryCard MC)
{
// Pre-check for header/footer signatures
SaveFile sav;
byte[] header = new byte[0], footer = new byte[0];
byte[] data = MC.SelectedSaveData;
CheckHeaderFooter(ref data, ref header, ref footer);
switch (MC.SelectedGameVersion)
{
// Side Games
case GameVersion.COLO: sav = new SAV3Colosseum(data, MC); break;
case GameVersion.XD: sav = new SAV3XD(data, MC); break;
case GameVersion.RSBOX: sav = new SAV3RSBox(data, MC); break;
// No pattern matched
default: return null;
}
sav.Header = header;
sav.Footer = footer;
return sav;
}
/// <summary>
/// Creates an instance of a SaveFile with a blank base.
/// </summary>
/// <param name="Game">Version to create the save file for.</param>
/// <param name="OT">Trainer Name</param>
/// <returns></returns>
public static SaveFile GetBlankSAV(GameVersion Game, string OT)
{
var SAV = GetBlankSAV(Game);
if (SAV == null)
return null;
SAV.Game = (int)Game;
SAV.OT = OT;
// Secondary Properties may not be used but can be filled in as template.
SAV.TID = 12345;
SAV.SID = 54321;
SAV.Language = (int)LanguageID.English; // English
SAV.Country = 49; // USA
SAV.SubRegion = 7; // CA
SAV.ConsoleRegion = 1; // Americas
return SAV;
}
/// <summary>
/// Creates an instance of a SaveFile with a blank base.
/// </summary>
/// <param name="Game">Version to create the save file for.</param>
/// <returns></returns>
private static SaveFile GetBlankSAV(GameVersion Game)
{
switch (Game)
{
case GameVersion.RBY:
return new SAV1();
case GameVersion.GS: case GameVersion.C: case GameVersion.GSC:
return new SAV2();
case GameVersion.R: case GameVersion.S: case GameVersion.E: case GameVersion.FR: case GameVersion.LG:
return new SAV3(versionOverride: Game);
case GameVersion.COLO:
return new SAV3Colosseum();
case GameVersion.XD:
return new SAV3XD();
case GameVersion.RSBOX:
return new SAV3RSBox();
case GameVersion.D: case GameVersion.P: case GameVersion.DP:
return new SAV4(new byte[SIZE_G4RAW], GameVersion.DP);
case GameVersion.Pt:
return new SAV4(new byte[SIZE_G4RAW], GameVersion.Pt);
case GameVersion.HG: case GameVersion.SS: case GameVersion.HGSS:
return new SAV4(new byte[SIZE_G4RAW], GameVersion.HGSS);
case GameVersion.B: case GameVersion.W: case GameVersion.BW:
return new SAV5(new byte[SIZE_G5RAW], GameVersion.BW);
case GameVersion.B2: case GameVersion.W2: case GameVersion.B2W2:
return new SAV5(new byte[SIZE_G5RAW], GameVersion.B2W2);
case GameVersion.X: case GameVersion.Y: case GameVersion.XY:
return new SAV6(new byte[SIZE_G6XY]);
case GameVersion.ORASDEMO:
return new SAV6(new byte[SIZE_G6ORASDEMO]);
case GameVersion.OR: case GameVersion.AS: case GameVersion.ORAS:
return new SAV6(new byte[SIZE_G6ORAS]);
case GameVersion.SN: case GameVersion.MN: case GameVersion.SM:
return new SAV7(new byte[SIZE_G7SM]);
case GameVersion.US: case GameVersion.UM: case GameVersion.USUM:
return new SAV7(new byte[SIZE_G7USUM]);
default:
return null;
}
}
/// <summary>
/// Creates an instance of a SaveFile with a blank base.
/// </summary>
/// <param name="generation">Generation of the Save File.</param>
/// <param name="OT">Trainer Name</param>
/// <returns>Save File for that generation.</returns>
public static SaveFile GetBlankSAV(int generation, string OT)
{
var ver = GameUtil.GetVersion(generation);
return GetBlankSAV(ver, OT);
}
/// <summary>
/// Retrieves the full path of the most recent file based on <see cref="FileInfo.LastWriteTime"/>.
/// </summary>
/// <param name="folderPath">Folder to look within</param>
/// <param name="deep">Search all subfolders</param>
/// <param name="result">If this function returns true, full path of all <see cref="SaveFile"/> that match criteria. If this function returns false, the error message, or null if the directory could not be found</param>
/// <returns>Boolean indicating whether or not operation was successful.</returns>
public static bool GetSavesFromFolder(string folderPath, bool deep, out IEnumerable<string> result)
{
if (!Directory.Exists(folderPath))
{
result = null;
return false;
}
try
{
var searchOption = deep ? SearchOption.AllDirectories : SearchOption.TopDirectoryOnly;
var files = Directory.EnumerateFiles(folderPath, "*", searchOption);
result = files.Where(f => IsSizeValid((int)new FileInfo(f).Length));
return true;
}
catch (ArgumentException)
{
result = new[] {"Error encountered when detecting saves in the following folder:" + Environment.NewLine + folderPath,
"Advise manually scanning to remove bad filenames from the folder." + Environment.NewLine + "Likely caused via Homebrew creating invalid filenames."};
return false;
}
}
/// <summary>
/// Determines whether the save data size is valid for autodetecting saves.
/// </summary>
/// <param name="size">Size in bytes of the save data</param>
/// <returns>A boolean indicating whether or not the save data size is valid.</returns>
private static bool IsSizeValid(int size) => SIZES.Contains(size);
// SAV Manipulation
/// <summary>Calculates the CRC16-CCITT checksum over an input byte array.</summary>
/// <param name="data">Input byte array</param>
/// <param name="start">Starting point for checksum</param>
/// <param name="length"></param>
/// <returns>Checksum</returns>
public static ushort CRC16_CCITT(byte[] data, int start, int length)
{
byte top = 0xFF;
byte bot = 0xFF;
int end = start + length;
for (int i = start; i < end; i++)
{
var x = data[i] ^ top;
x ^= (x >> 4);
top = (byte) (bot ^ (x >> 3) ^ (x << 4));
bot = (byte) (x ^ (x << 5));
}
return (ushort)(top << 8 | bot);
}
/// <summary>Calculates the CRC16-CCITT checksum over an input byte array.</summary>
/// <param name="data">Input byte array</param>
/// <returns>Checksum</returns>
public static ushort CRC16_CCITT(byte[] data) => CRC16_CCITT(data, 0, data.Length);
private static readonly ushort[] crc16 =
{
0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241,
0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440,
0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81, 0x0E40,
0x0A00, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841,
0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40,
0x1E00, 0xDEC1, 0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41,
0x1400, 0xD4C1, 0xD581, 0x1540, 0xD701, 0x17C0, 0x1680, 0xD641,
0xD201, 0x12C0, 0x1380, 0xD341, 0x1100, 0xD1C1, 0xD081, 0x1040,
0xF001, 0x30C0, 0x3180, 0xF141, 0x3300, 0xF3C1, 0xF281, 0x3240,
0x3600, 0xF6C1, 0xF781, 0x3740, 0xF501, 0x35C0, 0x3480, 0xF441,
0x3C00, 0xFCC1, 0xFD81, 0x3D40, 0xFF01, 0x3FC0, 0x3E80, 0xFE41,
0xFA01, 0x3AC0, 0x3B80, 0xFB41, 0x3900, 0xF9C1, 0xF881, 0x3840,
0x2800, 0xE8C1, 0xE981, 0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41,
0xEE01, 0x2EC0, 0x2F80, 0xEF41, 0x2D00, 0xEDC1, 0xEC81, 0x2C40,
0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681, 0x2640,
0x2200, 0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0, 0x2080, 0xE041,
0xA001, 0x60C0, 0x6180, 0xA141, 0x6300, 0xA3C1, 0xA281, 0x6240,
0x6600, 0xA6C1, 0xA781, 0x6740, 0xA501, 0x65C0, 0x6480, 0xA441,
0x6C00, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41,
0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840,
0x7800, 0xB8C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41,
0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1, 0xBC81, 0x7C40,
0xB401, 0x74C0, 0x7580, 0xB541, 0x7700, 0xB7C1, 0xB681, 0x7640,
0x7200, 0xB2C1, 0xB381, 0x7340, 0xB101, 0x71C0, 0x7080, 0xB041,
0x5000, 0x90C1, 0x9181, 0x5140, 0x9301, 0x53C0, 0x5280, 0x9241,
0x9601, 0x56C0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481, 0x5440,
0x9C01, 0x5CC0, 0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40,
0x5A00, 0x9AC1, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x5880, 0x9841,
0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00, 0x8BC1, 0x8A81, 0x4A40,
0x4E00, 0x8EC1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0, 0x4C80, 0x8C41,
0x4400, 0x84C1, 0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641,
0x8201, 0x42C0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040
};
/// <summary>Calculates the 16bit checksum over an input byte array. Used in Gen7 save files.</summary>
/// <param name="data">Input byte array</param>
/// <param name="start">Offset to start checksum at</param>
/// <param name="length">Length of array to checksum</param>
/// <param name="initial">Initial value for checksum</param>
/// <returns>Checksum</returns>
public static ushort CRC16(byte[] data, int start, int length, ushort initial = 0)
{
ushort chk = (ushort)~initial;
for (var i = start; i < start + length; i++)
chk = (ushort) (crc16[(data[i] ^ chk) & 0xFF] ^ chk >> 8);
return (ushort)~chk;
}
/// <summary>Calculates the 16bit checksum over an input byte array. Used in Gen7 save files.</summary>
/// <param name="data">Input byte array</param>
/// <param name="initial">Initial value for checksum</param>
/// <returns>Checksum</returns>
public static ushort CRC16(byte[] data, ushort initial = 0) => CRC16(data, 0, data.Length, initial);
public static byte[] Resign7(byte[] sav7)
{
return MemeCrypto.Resign7(sav7);
}
/// <summary>Calculates the 32bit checksum over an input byte array. Used in GBA save files.</summary>
/// <param name="data">Input byte array</param>
/// <param name="start">Offset to start checksum at</param>
/// <param name="length">Length of array to checksum</param>
/// <param name="initial">Initial value for checksum</param>
/// <returns>Checksum</returns>
public static ushort CRC32(byte[] data, int start, int length, uint initial = 0)
{
uint val = initial;
for (int i = start; i < start + length; i += 4)
val += BitConverter.ToUInt32(data, i);
return (ushort)(val + (val >> 16));
}
/// <summary>Calculates the 32bit checksum over an input byte array. Used in GBA save files.</summary>
/// <param name="data">Input byte array</param>
/// <param name="initial">Initial value for checksum</param>
/// <returns>Checksum</returns>
public static ushort CRC32(byte[] data, uint initial = 0) => CRC32(data, 0, data.Length, initial);
private static void CheckHeaderFooter(ref byte[] input, ref byte[] header, ref byte[] footer)
{
if (input.Length > SIZE_G4RAW) // DeSmuME Gen4/5 DSV
{
if (!FOOTER_DSV.SequenceEqual(input.Skip(input.Length - FOOTER_DSV.Length)))
return;
footer = input.Skip(SIZE_G4RAW).ToArray();
input = input.Take(SIZE_G4RAW).ToArray();
}
else if (input.Length == SIZE_G3BOXGCI)
{
if (!IsGameMatchHeader(HEADER_RSBOX, input))
return; // not gci
header = input.Take(SIZE_G3BOXGCI - SIZE_G3BOX).ToArray();
input = input.Skip(header.Length).ToArray();
}
else if (input.Length == SIZE_G3COLOGCI)
{
if (!IsGameMatchHeader(HEADER_COLO, input))
return; // not gci
header = input.Take(SIZE_G3COLOGCI - SIZE_G3COLO).ToArray();
input = input.Skip(header.Length).ToArray();
}
else if (input.Length == SIZE_G3XDGCI)
{
if (!IsGameMatchHeader(HEADER_XD, input))
return; // not gci
header = input.Take(SIZE_G3XDGCI - SIZE_G3XD).ToArray();
input = input.Skip(header.Length).ToArray();
}
bool IsGameMatchHeader(IEnumerable<string> headers, byte[] data) => headers.Contains(Encoding.ASCII.GetString(data, 0, 4));
}
private static readonly ushort[] formtable_SM = // u16 species, u16 formcount
{
0x0003, 0x0002, 0x0006, 0x0003, 0x0009, 0x0002, 0x000F, 0x0002,
0x0012, 0x0002, 0x0013, 0x0002, 0x0014, 0x0003, 0x0019, 0x0007,
0x001A, 0x0002, 0x001B, 0x0002, 0x001C, 0x0002, 0x0025, 0x0002,
0x0026, 0x0002, 0x0032, 0x0002, 0x0033, 0x0002, 0x0034, 0x0002,
0x0035, 0x0002, 0x0041, 0x0002, 0x004A, 0x0002, 0x004B, 0x0002,
0x004C, 0x0002, 0x0050, 0x0002, 0x0058, 0x0002, 0x0059, 0x0002,
0x005E, 0x0002, 0x0067, 0x0002, 0x0069, 0x0002, 0x0073, 0x0002,
0x007F, 0x0002, 0x0082, 0x0002, 0x008E, 0x0002, 0x0096, 0x0003,
0x00B5, 0x0002, 0x00C9, 0x001C, 0x00D0, 0x0002, 0x00D4, 0x0002,
0x00D6, 0x0002, 0x00E5, 0x0002, 0x00F8, 0x0002, 0x00FE, 0x0002,
0x0101, 0x0002, 0x0104, 0x0002, 0x011A, 0x0002, 0x012E, 0x0002,
0x012F, 0x0002, 0x0132, 0x0002, 0x0134, 0x0002, 0x0136, 0x0002,
0x013F, 0x0002, 0x0143, 0x0002, 0x014E, 0x0002, 0x015F, 0x0004,
0x0162, 0x0002, 0x0167, 0x0002, 0x016A, 0x0002, 0x0175, 0x0002,
0x0178, 0x0002, 0x017C, 0x0002, 0x017D, 0x0002, 0x017E, 0x0002,
0x017F, 0x0002, 0x0180, 0x0002, 0x0182, 0x0004, 0x019C, 0x0003,
0x019D, 0x0003, 0x01A5, 0x0002, 0x01A6, 0x0002, 0x01A7, 0x0002,
0x01AC, 0x0002, 0x01BD, 0x0002, 0x01C0, 0x0002, 0x01CC, 0x0002,
0x01DB, 0x0002, 0x01DF, 0x0006, 0x01E7, 0x0002, 0x01EC, 0x0002,
0x01ED, 0x0012, 0x0213, 0x0002, 0x0226, 0x0002, 0x022B, 0x0002,
0x0249, 0x0004, 0x024A, 0x0004, 0x0281, 0x0002, 0x0282, 0x0002,
0x0285, 0x0002, 0x0286, 0x0003, 0x0287, 0x0002, 0x0288, 0x0002,
0x0289, 0x0005, 0x0292, 0x0003, 0x029A, 0x0014, 0x029D, 0x0005,
0x029E, 0x0006, 0x029F, 0x0005, 0x02A4, 0x000A, 0x02A6, 0x0002,
0x02A9, 0x0002, 0x02C6, 0x0004, 0x02C7, 0x0004, 0x02CC, 0x0002,
0x02CE, 0x0005, 0x02CF, 0x0002, 0x02D0, 0x0002, 0x02DF, 0x0002,
0x02E2, 0x0002, 0x02E5, 0x0004, 0x02E9, 0x0002, 0x02EA, 0x0002,
0x02F2, 0x0002, 0x02F6, 0x0002, 0x0305, 0x0012, 0x0306, 0x000E,
0x030A, 0x0004, 0x0310, 0x0002, 0x0321, 0x0002,
};
private static readonly ushort[] formtable_USUM = // u16 species, u16 formcount
{
0x0003, 0x0002, 0x0006, 0x0003, 0x0009, 0x0002, 0x000F, 0x0002,
0x0012, 0x0002, 0x0013, 0x0002, 0x0014, 0x0003, 0x0019, 0x0008,
0x001A, 0x0002, 0x001B, 0x0002, 0x001C, 0x0002, 0x0025, 0x0002,
0x0026, 0x0002, 0x0032, 0x0002, 0x0033, 0x0002, 0x0034, 0x0002,
0x0035, 0x0002, 0x0041, 0x0002, 0x004A, 0x0002, 0x004B, 0x0002,
0x004C, 0x0002, 0x0050, 0x0002, 0x0058, 0x0002, 0x0059, 0x0002,
0x005E, 0x0002, 0x0067, 0x0002, 0x0069, 0x0003, 0x0073, 0x0002,
0x007F, 0x0002, 0x0082, 0x0002, 0x008E, 0x0002, 0x0096, 0x0003,
0x00B5, 0x0002, 0x00C9, 0x001C, 0x00D0, 0x0002, 0x00D4, 0x0002,
0x00D6, 0x0002, 0x00E5, 0x0002, 0x00F8, 0x0002, 0x00FE, 0x0002,
0x0101, 0x0002, 0x0104, 0x0002, 0x011A, 0x0002, 0x012E, 0x0002,
0x012F, 0x0002, 0x0132, 0x0002, 0x0134, 0x0002, 0x0136, 0x0002,
0x013F, 0x0002, 0x0143, 0x0002, 0x014E, 0x0002, 0x015F, 0x0004,
0x0162, 0x0002, 0x0167, 0x0002, 0x016A, 0x0002, 0x0175, 0x0002,
0x0178, 0x0002, 0x017C, 0x0002, 0x017D, 0x0002, 0x017E, 0x0002,
0x017F, 0x0002, 0x0180, 0x0002, 0x0182, 0x0004, 0x019C, 0x0003,
0x019D, 0x0003, 0x019E, 0x0003, 0x01A5, 0x0002, 0x01A6, 0x0002,
0x01A7, 0x0002, 0x01AC, 0x0002, 0x01BD, 0x0002, 0x01C0, 0x0002,
0x01CC, 0x0002, 0x01DB, 0x0002, 0x01DF, 0x0006, 0x01E7, 0x0002,
0x01EC, 0x0002, 0x01ED, 0x0012, 0x0213, 0x0002, 0x0226, 0x0002,
0x022B, 0x0002, 0x0249, 0x0004, 0x024A, 0x0004, 0x0281, 0x0002,
0x0282, 0x0002, 0x0285, 0x0002, 0x0286, 0x0003, 0x0287, 0x0002,
0x0288, 0x0002, 0x0289, 0x0005, 0x0292, 0x0003, 0x0298, 0x0014,
0x0299, 0x0014, 0x029A, 0x0014, 0x029D, 0x0005, 0x029E, 0x0006,
0x029F, 0x0005, 0x02A4, 0x000A, 0x02A6, 0x0002, 0x02A9, 0x0002,
0x02C6, 0x0004, 0x02C7, 0x0004, 0x02CC, 0x0002, 0x02CE, 0x0005,
0x02CF, 0x0002, 0x02D0, 0x0002, 0x02DF, 0x0002, 0x02E2, 0x0002,
0x02E5, 0x0004, 0x02E7, 0x0002, 0x02E8, 0x0002, 0x02E9, 0x0003,
0x02EA, 0x0002, 0x02F0, 0x0002, 0x02F2, 0x0002, 0x02F6, 0x0002,
0x0305, 0x0012, 0x0306, 0x000E, 0x0309, 0x0002, 0x030A, 0x0004,
0x0310, 0x0002, 0x0320, 0x0004, 0x0321, 0x0002
};
private static int GetDexFormBitIndex(int species, int formct, int start, IReadOnlyList<ushort> formtable)
{
int formindex = start;
int f = 0;
for (int i = 0; i < formtable.Count; i += 2)
{
int s = formtable[i];
f = formtable[i + 1];
if (s == species)
break;
formindex += f - 1;
}
if (f > formct)
return -1;
return formindex;
}
private static int GetDexFormCount(int species, IReadOnlyList<ushort> formtable)
{
for (int i = 0; i < formtable.Count; i += 2)
if (formtable[i] == species)
return formtable[i + 1];
return 0;
}
public static int GetDexFormIndexBW(int species, int formct)
{
if (formct < 1 || species < 0)
return -1; // invalid
switch (species)
{
case 201: return 000; // 28 Unown
case 386: return 028; // 4 Deoxys
case 492: return 032; // 2 Shaymin
case 487: return 034; // 2 Giratina
case 479: return 036; // 6 Rotom
case 422: return 042; // 2 Shellos
case 423: return 044; // 2 Gastrodon
case 412: return 046; // 3 Burmy
case 413: return 049; // 3 Wormadam
case 351: return 052; // 4 Castform
case 421: return 056; // 2 Cherrim
case 585: return 058; // 4 Deerling
case 586: return 062; // 4 Sawsbuck
case 648: return 066; // 2 Meloetta
case 555: return 068; // 2 Darmanitan
case 550: return 070; // 2 Basculin
default: return -1;
}
}
public static int GetDexFormIndexB2W2(int species, int formct)
{
if (formct < 1 || species < 0)
return -1; // invalid
switch (species)
{
case 646: return 072; // 3 Kyurem
case 647: return 075; // 2 Keldeo
case 642: return 077; // 2 Thundurus
case 641: return 079; // 2 Tornadus
case 645: return 081; // 2 Landorus
default: return GetDexFormIndexBW(species, formct);
}
}
public static int GetDexFormIndexXY(int species, int formct)
{
if (formct < 1 || species < 0)
return -1; // invalid
switch (species)
{
case 666: return 083; // 20 Vivillion
case 669: return 103; // 5 Flabébé
case 670: return 108; // 6 Floette
case 671: return 114; // 5 Florges
case 710: return 119; // 4 Pumpkaboo
case 711: return 123; // 4 Gourgeist
case 681: return 127; // 2 Aegislash
case 716: return 129; // 2 Xerneas
case 003: return 131; // 2 Venusaur
case 006: return 133; // 3 Charizard
case 009: return 136; // 2 Blastoise
case 065: return 138; // 2 Alakazam
case 094: return 140; // 2 Gengar
case 115: return 142; // 2 Kangaskhan
case 127: return 144; // 2 Pinsir
case 130: return 146; // 2 Gyarados
case 142: return 148; // 2 Aerodactyl
case 150: return 150; // 3 Mewtwo
case 181: return 153; // 2 Ampharos
case 212: return 155; // 2 Scizor
case 214: return 157; // 2 Heracros
case 229: return 159; // 2 Houndoom
case 248: return 161; // 2 Tyranitar
case 257: return 163; // 2 Blaziken
case 282: return 165; // 2 Gardevoir
case 303: return 167; // 2 Mawile
case 306: return 169; // 2 Aggron
case 308: return 171; // 2 Medicham
case 310: return 173; // 2 Manetric
case 354: return 175; // 2 Banette
case 359: return 177; // 2 Absol
case 380: return 179; // 2 Latias
case 381: return 181; // 2 Latios
case 445: return 183; // 2 Garchomp
case 448: return 185; // 2 Lucario
case 460: return 187; // 2 Abomasnow
default: return GetDexFormIndexB2W2(species, formct);
}
}
public static int GetDexFormIndexORAS(int species, int formct)
{
if (formct < 1 || species < 0)
return -1; // invalid
switch (species)
{
case 025: return 189; // 7 Pikachu
case 720: return 196; // 2 Hoopa
case 015: return 198; // 2 Beedrill
case 018: return 200; // 2 Pidgeot
case 080: return 202; // 2 Slowbro
case 208: return 204; // 2 Steelix
case 254: return 206; // 2 Sceptile
case 360: return 208; // 2 Swampert
case 302: return 210; // 2 Sableye
case 319: return 212; // 2 Sharpedo
case 323: return 214; // 2 Camerupt
case 334: return 216; // 2 Altaria
case 362: return 218; // 2 Glalie
case 373: return 220; // 2 Salamence
case 376: return 222; // 2 Metagross
case 384: return 224; // 2 Rayquaza
case 428: return 226; // 2 Lopunny
case 475: return 228; // 2 Gallade
case 531: return 230; // 2 Audino
case 719: return 232; // 2 Diancie
case 382: return 234; // 2 Kyogre
case 383: return 236; // 2 Groudon
case 493: return 238; // 18 Arceus
case 649: return 256; // 5 Genesect
case 676: return 261; // 10 Furfrou
default: return GetDexFormIndexXY(species, formct);
}
}
public static int GetDexFormIndexSM(int species, int formct, int start) => GetDexFormBitIndex(species, formct, start, formtable_SM);
public static int GetDexFormIndexUSUM(int species, int formct, int start) => GetDexFormBitIndex(species, formct, start, formtable_USUM);
public static int GetDexFormCountSM(int species) => GetDexFormCount(species, formtable_SM);
public static int GetDexFormCountUSUM(int species) => GetDexFormCount(species, formtable_USUM);
public static int GetCXDVersionID(int gen3version)
{
switch ((GameVersion)gen3version)
{
case GameVersion.FR: return 1;
case GameVersion.LG: return 2;
case GameVersion.S: return 8;
case GameVersion.R: return 9;
case GameVersion.E: return 10;
case GameVersion.CXD: return 11;
default: return 0;
}
}
public static int GetG3VersionID(int CXDversion)
{
switch (CXDversion)
{
case 1: return (int)GameVersion.FR;
case 2: return (int)GameVersion.LG;
case 8: return (int)GameVersion.S;
case 9: return (int)GameVersion.R;
case 10: return (int)GameVersion.E;
case 11: return (int)GameVersion.CXD;
default: return (int)GameVersion.Unknown;
}
}
public static byte[] DecryptGC(byte[] input, int start, int end, ushort[] keys)
{
byte[] output = (byte[])input.Clone();
for (int ofs = start; ofs < end; ofs += 8)
{
for (int i = 0; i < keys.Length; i++)
{
ushort val = BigEndian.ToUInt16(input, ofs + i * 2);
val -= keys[i];
output[ofs + i * 2] = (byte)(val >> 8);
output[ofs + i * 2 + 1] = (byte)val;
}
keys = AdvanceGCKeys(keys);
}
return output;
}
public static byte[] EncryptGC(byte[] input, int start, int end, ushort[] keys)
{
byte[] output = (byte[])input.Clone();
for (int ofs = start; ofs < end; ofs += 8)
{
for (int i = 0; i < keys.Length; i++)
{
ushort val = BigEndian.ToUInt16(input, ofs + i * 2);
val += keys[i];
output[ofs + i * 2] = (byte)(val >> 8);
output[ofs + i * 2 + 1] = (byte)val;
}
keys = AdvanceGCKeys(keys);
}
return output;
}
public static ushort[] AdvanceGCKeys(ushort[] oldKeys)
{
oldKeys[0] += 0x43;
oldKeys[1] += 0x29;
oldKeys[2] += 0x17;
oldKeys[3] += 0x13;
return new[]
{
(ushort)(oldKeys[0] & 0xf | oldKeys[1] << 4 & 0xf0 | oldKeys[2] << 8 & 0xf00 | oldKeys[3] << 12 & 0xf000),
(ushort)(oldKeys[0] >> 4 & 0xf | oldKeys[1] & 0xf0 | oldKeys[2] << 4 & 0xf00 | oldKeys[3] << 8 & 0xf000),
(ushort)(oldKeys[2] & 0xf00 | (oldKeys[1] & 0xf00) >> 4 | (oldKeys[0] & 0xf00) >> 8 | oldKeys[3] << 4 & 0xf000),
(ushort)(oldKeys[0] >> 12 & 0xf | oldKeys[1] >> 8 & 0xf0 | oldKeys[2] >> 4 & 0xf00 | oldKeys[3] & 0xf000),
};
}
/// <summary>
/// Creates a 16bit TID/SID tuple for a given G7TID.
/// </summary>
/// <param name="G7TID">Desired G7TID</param>
/// <param name="minimizeSID">Optional param to yield minimum SID.</param>
/// <returns>16bit TID/SID tuple</returns>
public static Tuple<uint, uint> GetTIDSID(uint G7TID, bool minimizeSID = false)
{
// 32 bit number = 4294 967295
// lowest 6 digits G7TID
// Bare minimum 32bit value to get ID, yields min SID
uint val = G7TID;
if (!minimizeSID) // randomize SID
{
uint s7 = 4294;
if (val > 967295)
s7 -= 1;
s7 = (uint)Util.Rand.Next(0, (int)s7);
val += s7 * 1000000;
}
uint TID = val & 0xFFFF;
uint SID = val >> 16;
return new Tuple<uint, uint>(TID, SID);
}
/// <summary>
/// Creates a <see cref="SaveFile"/> via decryption using a stored xorpad.
/// </summary>
/// <param name="input">Encrypted byte array of savedata to decrypt.</param>
/// <param name="XORpads">Array of possible paths to check for xorpad compatibility.</param>
/// <returns>Returns a <see cref="SaveFile"/> if decryption was successful, else null.</returns>
public static SaveFile GetSAVfromXORpads(byte[] input, IEnumerable<string> XORpads)
{
byte[] savID = new byte[0x10];
Array.Copy(input, 0x10, savID, 0, 0x10);
int[] sizes = { SIZE_G6XY, SIZE_G6ORAS, SIZE_G7SM };
foreach (var file in XORpads)
{
// Check if xorpad
FileInfo fi = new FileInfo(file);
string filename = fi.Name.ToLower();
if (!filename.Contains("xorpad") && !filename.Contains("key"))
continue;
var length = fi.Length;
if (length != 0x10009C && length != 0x100000)
continue;
// Fix xorpad alignment
byte[] xorpad = File.ReadAllBytes(file);
if (xorpad.Length == 0x10009C) // Trim off Powersaves' header
{
Array.Copy(xorpad, 0x9C, xorpad, 0, 0x100000);
Array.Resize(ref xorpad, 0x100000);
}
// Check if encrypted 00's match save
if (!xorpad.Skip(0x10).Take(0x10).SequenceEqual(savID))
continue;
// Set up Decrypted File
const int mainOffset = 0x5400;
int maxSize = sizes.Max();
byte[] decryptedPS = new byte[maxSize];
Array.Copy(input, mainOffset, decryptedPS, 0, decryptedPS.Length);
// xor through and decrypt
for (int z = 0; z < decryptedPS.Length; z++)
decryptedPS[z] ^= xorpad[mainOffset + z];
// Weakly check the validity of the decrypted content
int i; for (i = 0; i < sizes.Length; i++)
{
if (BitConverter.ToUInt32(decryptedPS, sizes[i] - 0x1F0) != BEEF)
continue;
Array.Resize(ref decryptedPS, sizes[i]);
break;
}
if (i == sizes.Length)
continue;
// Save file is now decrypted!
var SAV = GetVariantSAV(decryptedPS);
if (SAV == null)
continue;
SAV.FileName = file;
return SAV;
}
return null; // no xorpad compatible
}
/// <summary>
/// Checks if the <see cref="PKM"/> is compatible with the input <see cref="SaveFile"/>, and makes any necessary modifications to force compatibility.
/// </summary>
/// <remarks>Should only be used when forcing a backwards conversion to sanitize the PKM fields to the target format.
/// If the PKM is compatible, some properties may be forced to sanitized values.</remarks>
/// <param name="SAV">Save File target that the PKM will be injected.</param>
/// <param name="pk">PKM input that is to be injected into the Save File.</param>
/// <returns>Indication whether or not the PKM is compatible.</returns>
public static bool IsPKMCompatibleWithModifications(SaveFile SAV, PKM pk)
{
if (pk.Species > SAV.MaxSpeciesID)
return false;
if (pk.HeldItem > SAV.MaxItemID)
pk.HeldItem = 0;
if (pk.Nickname.Length > SAV.NickLength)
pk.Nickname = pk.Nickname.Substring(0, SAV.NickLength);
if (pk.OT_Name.Length > SAV.OTLength)
pk.OT_Name = pk.OT_Name.Substring(0, SAV.OTLength);
if (pk.Moves.Any(move => move > SAV.MaxMoveID))
pk.ClearInvalidMoves();
if (pk.EVs.Any(ev => ev > SAV.MaxEV))
pk.EVs = pk.EVs.Select(ev => Math.Min(SAV.MaxEV, ev)).ToArray();
if (pk.IVs.Any(ev => ev > SAV.MaxEV))
pk.IVs = pk.IVs.Select(iv => Math.Min(SAV.MaxIV, iv)).ToArray();
return true;
}
/// <summary>
/// Sets the details of a path to a <see cref="SaveFile"/> object.
/// </summary>
/// <param name="sav">Save File to set path details to.</param>
/// <param name="path">Full Path of the file</param>
public static void SetFileInfo(this SaveFile sav, string path)
{
if (!sav.Exportable) // Blank save file
{
sav.FilePath = null;
sav.FileName = "Blank Save File";
return;
}
sav.FilePath = Path.GetDirectoryName(path);
sav.FileName = Path.GetExtension(path) == ".bak"
? Path.GetFileName(path).Split(new[] { " [" }, StringSplitOptions.None)[0]
: Path.GetFileName(path);
}
}
}