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jvyden 2022-06-14 21:01:29 -04:00
parent a90da4e7b3
commit bccb6749d1
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GPG key ID: 18BCF2BE0262B278
9 changed files with 393 additions and 393 deletions
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86
UnionPatcher.Cli/Program.cs
View file

@ -2,53 +2,53 @@
using System.Diagnostics;
using System.IO;
namespace LBPUnion.UnionPatcher.Cli {
public static class Program {
public const string Version = "1.0";
namespace LBPUnion.UnionPatcher.Cli;
private static string fileName;
public static class Program {
public const string Version = "1.0";
public static string FileName {
get {
if(fileName != null) return fileName;
private static string fileName;
return fileName = Path.GetFileName(Process.GetCurrentProcess().MainModule?.FileName);
}
}
public static string FileName {
get {
if(fileName != null) return fileName;
public static void Main(string[] args) {
if(args.Length < 3) {
PrintHelp();
return;
}
ElfFile eboot = new(new FileInfo(args[0]));
if(!eboot.IsValid) {
Console.WriteLine($"{eboot.Name} is not a valid ELF file (magic number mismatch)");
Console.WriteLine("The EBOOT must be decrypted before using this tool");
return;
}
if(eboot.Is64Bit == null) {
Console.WriteLine($"{eboot.Name} does not target a valid system");
return;
}
if(string.IsNullOrWhiteSpace(eboot.Architecture)) {
Console.WriteLine($"{eboot.Name} does not target a valid architecture (PowerPC or ARM)");
return;
}
Console.WriteLine($"{eboot.Name} targets {eboot.Architecture}");
Patcher.PatchFile(args[0], args[1], args[2]);
Console.WriteLine($"Successfully patched Server URL to {args[1]}.");
}
public static void PrintHelp() {
Console.WriteLine($"UnionPatcher {Version}");
Console.WriteLine($" Usage: {FileName} <Input EBOOT.elf> <Server URL> <Output filename>");
return fileName = Path.GetFileName(Process.GetCurrentProcess().MainModule?.FileName);
}
}
public static void Main(string[] args) {
if(args.Length < 3) {
PrintHelp();
return;
}
ElfFile eboot = new(new FileInfo(args[0]));
if(!eboot.IsValid) {
Console.WriteLine($"{eboot.Name} is not a valid ELF file (magic number mismatch)");
Console.WriteLine("The EBOOT must be decrypted before using this tool");
return;
}
if(eboot.Is64Bit == null) {
Console.WriteLine($"{eboot.Name} does not target a valid system");
return;
}
if(string.IsNullOrWhiteSpace(eboot.Architecture)) {
Console.WriteLine($"{eboot.Name} does not target a valid architecture (PowerPC or ARM)");
return;
}
Console.WriteLine($"{eboot.Name} targets {eboot.Architecture}");
Patcher.PatchFile(args[0], args[1], args[2]);
Console.WriteLine($"Successfully patched Server URL to {args[1]}.");
}
public static void PrintHelp() {
Console.WriteLine($"UnionPatcher {Version}");
Console.WriteLine($" Usage: {FileName} <Input EBOOT.elf> <Server URL> <Output filename>");
}
}

10
UnionPatcher.Gui.Linux/Program.cs
View file

@ -1,7 +1,7 @@
namespace LBPUnion.UnionPatcher.Gui.Linux {
public static class Program {
public static void Main() {
Gui.Show();
}
namespace LBPUnion.UnionPatcher.Gui.Linux;
public static class Program {
public static void Main() {
Gui.Show();
}
}

10
UnionPatcher.Gui.MacOS/Program.cs
View file

@ -1,7 +1,7 @@
namespace LBPUnion.UnionPatcher.Gui.MacOS {
public static class Program {
public static void Main() {
Gui.Show();
}
namespace LBPUnion.UnionPatcher.Gui.MacOS;
public static class Program {
public static void Main() {
Gui.Show();
}
}

12
UnionPatcher.Gui.Windows/Program.cs
View file

@ -1,10 +1,10 @@
using System;
namespace LBPUnion.UnionPatcher.Gui.Windows {
public static class Program {
[STAThread]
public static void Main() {
Gui.Show();
}
namespace LBPUnion.UnionPatcher.Gui.Windows;
public static class Program {
[STAThread]
public static void Main() {
Gui.Show();
}
}

18
UnionPatcher.Gui/EasterEgg.cs
View file

@ -1,16 +1,16 @@
using System;
namespace LBPUnion.UnionPatcher.Gui {
public static class EasterEgg {
private static bool? restitch = null;
namespace LBPUnion.UnionPatcher.Gui;
public static bool Restitch {
get {
if(restitch == null) {
return (bool)(restitch = new Random().Next(1, 10_000) == 1);
}
return (bool)restitch;
public static class EasterEgg {
private static bool? restitch = null;
public static bool Restitch {
get {
if(restitch == null) {
return (bool)(restitch = new Random().Next(1, 10_000) == 1);
}
return (bool)restitch;
}
}
}

10
UnionPatcher.Gui/Gui.cs
View file

@ -1,9 +1,9 @@
using Eto.Forms;
namespace LBPUnion.UnionPatcher.Gui {
public static class Gui {
public static void Show() {
new Application().Run(new MainForm());
}
namespace LBPUnion.UnionPatcher.Gui;
public static class Gui {
public static void Show() {
new Application().Run(new MainForm());
}
}

298
UnionPatcher.Gui/MainForm.cs
View file

@ -5,161 +5,161 @@ using Eto;
using Eto.Drawing;
using Eto.Forms;
namespace LBPUnion.UnionPatcher.Gui {
public class MainForm : Form {
#region UI
private readonly FilePicker filePicker;
private readonly TextBox serverUrl;
private readonly FilePicker outputFileName;
public Dialog CreateOkDialog(string title, string errorMessage) {
DynamicLayout layout = new();
Button button;
namespace LBPUnion.UnionPatcher.Gui;
layout.Spacing = new Size(5, 5);
layout.MinimumSize = new Size(350, 100);
public class MainForm : Form {
#region UI
private readonly FilePicker filePicker;
private readonly TextBox serverUrl;
private readonly FilePicker outputFileName;
public Dialog CreateOkDialog(string title, string errorMessage) {
DynamicLayout layout = new();
Button button;
layout.BeginHorizontal();
layout.Add(new Label {
Text = errorMessage,
});
layout.Spacing = new Size(5, 5);
layout.MinimumSize = new Size(350, 100);
layout.BeginHorizontal();
layout.BeginVertical();
layout.Add(null);
layout.Add(button = new Button {
Text = "OK",
});
layout.BeginHorizontal();
layout.Add(new Label {
Text = errorMessage,
});
layout.EndVertical();
layout.EndHorizontal();
layout.EndHorizontal();
layout.BeginHorizontal();
layout.BeginVertical();
layout.Add(null);
layout.Add(button = new Button {
Text = "OK",
});
Dialog dialog = new() {
Content = layout,
Padding = new Padding(10, 10, 10, 10),
Title = title,
};
layout.EndVertical();
layout.EndHorizontal();
layout.EndHorizontal();
button.Click += delegate {
dialog.Close();
};
Dialog dialog = new() {
Content = layout,
Padding = new Padding(10, 10, 10, 10),
Title = title,
};
return dialog;
}
button.Click += delegate {
dialog.Close();
};
public Control CreatePatchButton(int tabIndex = 0) {
Button control = new() {
Text = EasterEgg.Restitch ? "Restitch!" : "Patch!",
TabIndex = tabIndex,
};
control.Click += Patch;
return control;
}
public Control CreateHelpButton(int tabIndex = 0) {
Button control = new() {
Text = "Help",
TabIndex = tabIndex,
};
control.Click += delegate {
Process process = new();
process.StartInfo.UseShellExecute = true;
process.StartInfo.FileName = "https://www.lbpunion.com";
process.Start();
};
return control;
}
public MainForm() {
this.Title = EasterEgg.Restitch ? "Union Restitcher" : "Union Patcher";
this.ClientSize = new Size(500, -1);
this.Content = new TableLayout {
Spacing = new Size(5,5),
Padding = new Padding(10, 10, 10, 10),
Rows = {
new TableRow(
new TableCell(new Label { Text = "EBOOT.elf: ", VerticalAlignment = VerticalAlignment.Center }),
new TableCell(this.filePicker = new FilePicker { TabIndex = 0 })
),
new TableRow(
new TableCell(new Label { Text = "Server URL: ", VerticalAlignment = VerticalAlignment.Center }),
new TableCell(this.serverUrl = new TextBox { TabIndex = 1 })
),
new TableRow(
new TableCell(new Label { Text = "Output filename: ", VerticalAlignment = VerticalAlignment.Center }),
new TableCell(this.outputFileName = new FilePicker { TabIndex = 2, FileAction = FileAction.SaveFile })
),
new TableRow(
new TableCell(this.CreateHelpButton(4)),
new TableCell(this.CreatePatchButton(3))
),
},
};
}
#endregion
private void Patch(object sender, EventArgs e) {
this.Patch();
}
private void Patch() {
if(string.IsNullOrWhiteSpace(this.filePicker.FilePath)) {
this.CreateOkDialog("Form Error", "No file specified!").ShowModal();
return;
}
if(string.IsNullOrWhiteSpace(this.serverUrl.Text)) {
this.CreateOkDialog("Form Error", "No server URL specified!").ShowModal();
return;
}
if(string.IsNullOrWhiteSpace(this.outputFileName.FilePath)) {
this.CreateOkDialog("Form Error", "No output file specified!").ShowModal();
return;
}
if(this.filePicker.FilePath == this.outputFileName.FilePath) {
this.CreateOkDialog("Form Error", "Input and output filename are the same! Please save the patched file with a different name so you have a backup of your the original EBOOT.ELF.").ShowModal();
return;
}
if(!Uri.TryCreate(this.serverUrl.Text, UriKind.Absolute, out _)) {
this.CreateOkDialog("Form Error", "Server URL is invalid! Please enter a valid URL.").ShowModal();
return;
}
// Validate EBOOT after validating form; more expensive
ElfFile eboot = new(this.filePicker.FilePath);
if(eboot.IsValid == false) {
this.CreateOkDialog("EBOOT Error", $"{eboot.Name} is not a valid ELF file (magic number mismatch)\n" + "The EBOOT must be decrypted before using this tool").ShowModal();
return;
}
if(eboot.Is64Bit == null) {
this.CreateOkDialog("EBOOT Error", $"{eboot.Name} does not target a valid system").ShowModal();
return;
}
if(string.IsNullOrWhiteSpace(eboot.Architecture)) {
this.CreateOkDialog("EBOOT Error", $"{eboot.Name} does not target a valid architecture (PowerPC or ARM)").ShowModal();
return;
}
try {
Patcher.PatchFile(this.filePicker.FilePath, this.serverUrl.Text, this.outputFileName.FilePath);
}
catch(Exception e) {
this.CreateOkDialog("Error occurred while patching", "An error occured while patching:\n" + e).ShowModal();
return;
}
this.CreateOkDialog("Success!", "The Server URL has been patched to " + this.serverUrl.Text).ShowModal();
}
return dialog;
}
}
public Control CreatePatchButton(int tabIndex = 0) {
Button control = new() {
Text = EasterEgg.Restitch ? "Restitch!" : "Patch!",
TabIndex = tabIndex,
};
control.Click += Patch;
return control;
}
public Control CreateHelpButton(int tabIndex = 0) {
Button control = new() {
Text = "Help",
TabIndex = tabIndex,
};
control.Click += delegate {
Process process = new();
process.StartInfo.UseShellExecute = true;
process.StartInfo.FileName = "https://www.lbpunion.com";
process.Start();
};
return control;
}
public MainForm() {
this.Title = EasterEgg.Restitch ? "Union Restitcher" : "Union Patcher";
this.ClientSize = new Size(500, -1);
this.Content = new TableLayout {
Spacing = new Size(5,5),
Padding = new Padding(10, 10, 10, 10),
Rows = {
new TableRow(
new TableCell(new Label { Text = "EBOOT.elf: ", VerticalAlignment = VerticalAlignment.Center }),
new TableCell(this.filePicker = new FilePicker { TabIndex = 0 })
),
new TableRow(
new TableCell(new Label { Text = "Server URL: ", VerticalAlignment = VerticalAlignment.Center }),
new TableCell(this.serverUrl = new TextBox { TabIndex = 1 })
),
new TableRow(
new TableCell(new Label { Text = "Output filename: ", VerticalAlignment = VerticalAlignment.Center }),
new TableCell(this.outputFileName = new FilePicker { TabIndex = 2, FileAction = FileAction.SaveFile })
),
new TableRow(
new TableCell(this.CreateHelpButton(4)),
new TableCell(this.CreatePatchButton(3))
),
},
};
}
#endregion
private void Patch(object sender, EventArgs e) {
this.Patch();
}
private void Patch() {
if(string.IsNullOrWhiteSpace(this.filePicker.FilePath)) {
this.CreateOkDialog("Form Error", "No file specified!").ShowModal();
return;
}
if(string.IsNullOrWhiteSpace(this.serverUrl.Text)) {
this.CreateOkDialog("Form Error", "No server URL specified!").ShowModal();
return;
}
if(string.IsNullOrWhiteSpace(this.outputFileName.FilePath)) {
this.CreateOkDialog("Form Error", "No output file specified!").ShowModal();
return;
}
if(this.filePicker.FilePath == this.outputFileName.FilePath) {
this.CreateOkDialog("Form Error", "Input and output filename are the same! Please save the patched file with a different name so you have a backup of your the original EBOOT.ELF.").ShowModal();
return;
}
if(!Uri.TryCreate(this.serverUrl.Text, UriKind.Absolute, out _)) {
this.CreateOkDialog("Form Error", "Server URL is invalid! Please enter a valid URL.").ShowModal();
return;
}
// Validate EBOOT after validating form; more expensive
ElfFile eboot = new(this.filePicker.FilePath);
if(eboot.IsValid == false) {
this.CreateOkDialog("EBOOT Error", $"{eboot.Name} is not a valid ELF file (magic number mismatch)\n" + "The EBOOT must be decrypted before using this tool").ShowModal();
return;
}
if(eboot.Is64Bit == null) {
this.CreateOkDialog("EBOOT Error", $"{eboot.Name} does not target a valid system").ShowModal();
return;
}
if(string.IsNullOrWhiteSpace(eboot.Architecture)) {
this.CreateOkDialog("EBOOT Error", $"{eboot.Name} does not target a valid architecture (PowerPC or ARM)").ShowModal();
return;
}
try {
Patcher.PatchFile(this.filePicker.FilePath, this.serverUrl.Text, this.outputFileName.FilePath);
}
catch(Exception e) {
this.CreateOkDialog("Error occurred while patching", "An error occured while patching:\n" + e).ShowModal();
return;
}
this.CreateOkDialog("Success!", "The Server URL has been patched to " + this.serverUrl.Text).ShowModal();
}
}

146
UnionPatcher/ElfFile.cs
View file

@ -8,78 +8,78 @@ Linux ELF header refspec: https://refspecs.linuxfoundation.org/elf/gabi4+/ch4.eh
Wikipedia entry on ELF: https://en.wikipedia.org/wiki/Executable_and_Linkable_Format
*/
namespace LBPUnion.UnionPatcher {
public class ElfFile {
internal const int MinimumSize = 52;
namespace LBPUnion.UnionPatcher;
public class ElfFile {
internal const int MinimumSize = 52;
private enum WordSize : byte {
ThirtyTwoBits = 0x01,
SixtyFourBits = 0x02,
}
private enum Endianness : byte {
Little = 0x01,
Big = 0x02,
}
private enum InstructionSetArchitecture : UInt16 {
PowerPC = 0x15, //64-bit PowerPC (PS3)
ARM = 0x28, //32-bit ARM (Vita)
}
public string Name { get; } = "Binary Blob";
public bool IsValid { get; } = false;
public bool? Is64Bit { get; } = null;
public bool? IsBigEndian { get; } = null;
public string Architecture { get; } = null;
public byte[] Contents { get; } = null;
public ElfFile(byte[] fileContents) {
if(fileContents.Length < MinimumSize)
return;
IsValid = fileContents[..0x04].SequenceEqual(new byte[] {
0x7F,
(byte)'E',
(byte)'L',
(byte)'F',
});
if(!IsValid) return;
byte identClassValue = fileContents[0x04];
byte identDataValue = fileContents[0x05];
if(identClassValue == (byte)WordSize.ThirtyTwoBits || identClassValue == (byte)WordSize.SixtyFourBits)
Is64Bit = identClassValue == (byte)WordSize.SixtyFourBits;
if(identDataValue == (byte)Endianness.Little || identDataValue == (byte)Endianness.Big)
IsBigEndian = identDataValue == (byte)Endianness.Big;
Architecture = GetFileArchitecture(fileContents, IsBigEndian == true);
Contents = fileContents;
}
public ElfFile(FileInfo file) : this(File.ReadAllBytes(file.FullName)) {
Name = file.Name;
}
public ElfFile(string fileName) : this(new FileInfo(fileName)) {}
private string GetFileArchitecture(byte[] elfHeader, bool isBigEndian) {
byte[] architectureBytes = elfHeader[0x12..0x14];
UInt16 fileArch = (isBigEndian) ?
BinaryPrimitives.ReadUInt16BigEndian(architectureBytes) :
BinaryPrimitives.ReadUInt16LittleEndian(architectureBytes);
foreach(InstructionSetArchitecture arch in Enum.GetValues(typeof(InstructionSetArchitecture))) {
if(fileArch == (UInt16)arch)
return arch.ToString();
}
return null;
}
private enum WordSize : byte {
ThirtyTwoBits = 0x01,
SixtyFourBits = 0x02,
}
}
private enum Endianness : byte {
Little = 0x01,
Big = 0x02,
}
private enum InstructionSetArchitecture : UInt16 {
PowerPC = 0x15, //64-bit PowerPC (PS3)
ARM = 0x28, //32-bit ARM (Vita)
}
public string Name { get; } = "Binary Blob";
public bool IsValid { get; } = false;
public bool? Is64Bit { get; } = null;
public bool? IsBigEndian { get; } = null;
public string Architecture { get; } = null;
public byte[] Contents { get; } = null;
public ElfFile(byte[] fileContents) {
if(fileContents.Length < MinimumSize)
return;
IsValid = fileContents[..0x04].SequenceEqual(new byte[] {
0x7F,
(byte)'E',
(byte)'L',
(byte)'F',
});
if(!IsValid) return;
byte identClassValue = fileContents[0x04];
byte identDataValue = fileContents[0x05];
if(identClassValue == (byte)WordSize.ThirtyTwoBits || identClassValue == (byte)WordSize.SixtyFourBits)
Is64Bit = identClassValue == (byte)WordSize.SixtyFourBits;
if(identDataValue == (byte)Endianness.Little || identDataValue == (byte)Endianness.Big)
IsBigEndian = identDataValue == (byte)Endianness.Big;
Architecture = GetFileArchitecture(fileContents, IsBigEndian == true);
Contents = fileContents;
}
public ElfFile(FileInfo file) : this(File.ReadAllBytes(file.FullName)) {
Name = file.Name;
}
public ElfFile(string fileName) : this(new FileInfo(fileName)) {}
private string GetFileArchitecture(byte[] elfHeader, bool isBigEndian) {
byte[] architectureBytes = elfHeader[0x12..0x14];
UInt16 fileArch = (isBigEndian) ?
BinaryPrimitives.ReadUInt16BigEndian(architectureBytes) :
BinaryPrimitives.ReadUInt16LittleEndian(architectureBytes);
foreach(InstructionSetArchitecture arch in Enum.GetValues(typeof(InstructionSetArchitecture))) {
if(fileArch == (UInt16)arch)
return arch.ToString();
}
return null;
}
}

196
UnionPatcher/Patcher.cs
View file

@ -2,104 +2,104 @@ using System;
using System.IO;
using System.Text;
namespace LBPUnion.UnionPatcher {
public static class Patcher {
private static readonly string[] toBePatched = {
// Normal LittleBigPlanet gameserver URLs
"https://littlebigplanetps3.online.scee.com:10061/LITTLEBIGPLANETPS3_XML",
"http://littlebigplanetps3.online.scee.com:10060/LITTLEBIGPLANETPS3_XML",
// LittleBigPlanet 3 Presence URLs
"http://live.littlebigplanetps3.online.scee.com:10060/LITTLEBIGPLANETPS3_XML",
"http://presence.littlebigplanetps3.online.scee.com:10060/LITTLEBIGPLANETPS3_XML",
#region Spinoff URLs
// LittleBigPlanet PSP URLs
"http://lbppsp.online.scee.com:10060/LITTLEBIGPLANETPSP_XML",
"https://lbppsp.online.scee.com:10061/LITTLEBIGPLANETPSP_XML",
// LittleBigPlanet Vita URLs
"http://lbpvita.online.scee.com:10060/LITTLEBIGPLANETPS3_XML",
"https://lbpvita.online.scee.com:10061/LITTLEBIGPLANETPS3_XML",
#endregion
#region Beta URLS
// LittleBigPlanet 2 Beta URLs
"http://lbp2ps3-beta.online.scee.com:10060/LITTLEBIGPLANETPS3_XML",
"https://lbp2ps3-beta.online.scee.com:10061/LITTLEBIGPLANETPS3_XML",
// LittleBigPlanet (3?) Beta URLs
"http://littlebigplanetps3-beta.online.scee.com:10060/LITTLEBIGPLANETPS3_XML",
"https://littlebigplanetps3-beta.online.scee.com:10061/LITTLEBIGPLANETPS3_XML",
// LittleBigPlanet Vita Beta URLs
"http://lbpvita-beta.online.scee.com:10060/LITTLEBIGPLANETPS3_XML",
"https://lbpvita-beta.online.scee.com:10061/LITTLEBIGPLANETPS3_XML",
#endregion
};
namespace LBPUnion.UnionPatcher;
public static void PatchFile(string fileName, Uri serverUrl, string outputFileName) {
PatchFile(fileName, serverUrl.ToString(), outputFileName);
}
public static class Patcher {
private static readonly string[] toBePatched = {
// Normal LittleBigPlanet gameserver URLs
"https://littlebigplanetps3.online.scee.com:10061/LITTLEBIGPLANETPS3_XML",
"http://littlebigplanetps3.online.scee.com:10060/LITTLEBIGPLANETPS3_XML",
// LittleBigPlanet 3 Presence URLs
"http://live.littlebigplanetps3.online.scee.com:10060/LITTLEBIGPLANETPS3_XML",
"http://presence.littlebigplanetps3.online.scee.com:10060/LITTLEBIGPLANETPS3_XML",
#region Spinoff URLs
// LittleBigPlanet PSP URLs
"http://lbppsp.online.scee.com:10060/LITTLEBIGPLANETPSP_XML",
"https://lbppsp.online.scee.com:10061/LITTLEBIGPLANETPSP_XML",
// LittleBigPlanet Vita URLs
"http://lbpvita.online.scee.com:10060/LITTLEBIGPLANETPS3_XML",
"https://lbpvita.online.scee.com:10061/LITTLEBIGPLANETPS3_XML",
#endregion
#region Beta URLS
// LittleBigPlanet 2 Beta URLs
"http://lbp2ps3-beta.online.scee.com:10060/LITTLEBIGPLANETPS3_XML",
"https://lbp2ps3-beta.online.scee.com:10061/LITTLEBIGPLANETPS3_XML",
// LittleBigPlanet (3?) Beta URLs
"http://littlebigplanetps3-beta.online.scee.com:10060/LITTLEBIGPLANETPS3_XML",
"https://littlebigplanetps3-beta.online.scee.com:10061/LITTLEBIGPLANETPS3_XML",
// LittleBigPlanet Vita Beta URLs
"http://lbpvita-beta.online.scee.com:10060/LITTLEBIGPLANETPS3_XML",
"https://lbpvita-beta.online.scee.com:10061/LITTLEBIGPLANETPS3_XML",
#endregion
};
public static void PatchFile(string fileName, string serverUrl, string outputFileName) {
File.WriteAllBytes(outputFileName, PatchData(File.ReadAllBytes(fileName), serverUrl));
}
public static byte[] PatchData(byte[] data, Uri serverUrl) {
return PatchData(data, serverUrl.ToString());
}
public static byte[] PatchData(byte[] data, string serverUrl) {
#region Validation
if(serverUrl.EndsWith('/')) {
throw new ArgumentException("URL must not contain a trailing slash!");
}
// Attempt to create URI to see if it's valid
if(!Uri.TryCreate(serverUrl, UriKind.RelativeOrAbsolute, out _)) {
throw new Exception("URL must be valid.");
}
if(serverUrl.Length > data.Length) {
throw new ArgumentException("URL cannot be bigger than the file to patch.");
}
#endregion
string dataAsString = Encoding.ASCII.GetString(data);
using MemoryStream ms = new(data);
using BinaryWriter writer = new(ms);
// Using writer.Write(string) writes the length as a byte beforehand
// This is problematic because LBP (being written in C/C++) uses null-terminated strings,
// as opposed to length-text written strings as C# likes to serialize.
byte[] serverUrlAsBytes = Encoding.ASCII.GetBytes(serverUrl);
bool wroteUrl = false;
foreach(string url in toBePatched) {
if(serverUrl.Length > url.Length) {
throw new ArgumentOutOfRangeException(nameof(serverUrl), $"Server URL ({serverUrl.Length} characters long) is above maximum length {url.Length}");
}
int offset = dataAsString.IndexOf(url, StringComparison.Ordinal);
if(offset < 1) continue;
writer.BaseStream.Position = offset;
for(int i = 0; i < url.Length; i++) {
writer.Write((byte)0x00); // Zero out data
}
writer.BaseStream.Position = offset; // Reset position to beginning
writer.Write(serverUrlAsBytes);
wroteUrl = true;
}
if(!wroteUrl) {
throw new Exception("No patchable URLs were detected in the " +
"provided file. Please make sure you are patching " +
"the correct file.");
}
writer.Flush();
writer.Close();
return data;
}
public static void PatchFile(string fileName, Uri serverUrl, string outputFileName) {
PatchFile(fileName, serverUrl.ToString(), outputFileName);
}
}
public static void PatchFile(string fileName, string serverUrl, string outputFileName) {
File.WriteAllBytes(outputFileName, PatchData(File.ReadAllBytes(fileName), serverUrl));
}
public static byte[] PatchData(byte[] data, Uri serverUrl) {
return PatchData(data, serverUrl.ToString());
}
public static byte[] PatchData(byte[] data, string serverUrl) {
#region Validation
if(serverUrl.EndsWith('/')) {
throw new ArgumentException("URL must not contain a trailing slash!");
}
// Attempt to create URI to see if it's valid
if(!Uri.TryCreate(serverUrl, UriKind.RelativeOrAbsolute, out _)) {
throw new Exception("URL must be valid.");
}
if(serverUrl.Length > data.Length) {
throw new ArgumentException("URL cannot be bigger than the file to patch.");
}
#endregion
string dataAsString = Encoding.ASCII.GetString(data);
using MemoryStream ms = new(data);
using BinaryWriter writer = new(ms);
// Using writer.Write(string) writes the length as a byte beforehand
// This is problematic because LBP (being written in C/C++) uses null-terminated strings,
// as opposed to length-text written strings as C# likes to serialize.
byte[] serverUrlAsBytes = Encoding.ASCII.GetBytes(serverUrl);
bool wroteUrl = false;
foreach(string url in toBePatched) {
if(serverUrl.Length > url.Length) {
throw new ArgumentOutOfRangeException(nameof(serverUrl), $"Server URL ({serverUrl.Length} characters long) is above maximum length {url.Length}");
}
int offset = dataAsString.IndexOf(url, StringComparison.Ordinal);
if(offset < 1) continue;
writer.BaseStream.Position = offset;
for(int i = 0; i < url.Length; i++) {
writer.Write((byte)0x00); // Zero out data
}
writer.BaseStream.Position = offset; // Reset position to beginning
writer.Write(serverUrlAsBytes);
wroteUrl = true;
}
if(!wroteUrl) {
throw new Exception("No patchable URLs were detected in the " +
"provided file. Please make sure you are patching " +
"the correct file.");
}
writer.Flush();
writer.Close();
return data;
}
}