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consolidate all repos to one for archive

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This commit is contained in:
Nikola Petrov
2025-01-28 13:46:42 +01:00
commit a6610fbc7a
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63
semester_3/racunalniska_omrezja/naloga_5/.gitattributes vendored Normal file
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* text=auto
###############################################################################
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## Ignore Visual Studio temporary files, build results, and
## files generated by popular Visual Studio add-ons.
##
## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
# User-specific files
*.rsuser
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semester_3/racunalniska_omrezja/naloga_5/5_Naloga.sln Normal file
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Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio Version 17
VisualStudioVersion = 17.3.32929.385
MinimumVisualStudioVersion = 10.0.40219.1
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ConsoleTest", "5_Naloga\ConsoleTest.csproj", "{2E637986-DAC0-4302-9E8D-1DB9910661CA}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WpfBlockChanApp", "WpfBlockChanApp\WpfBlockChanApp.csproj", "{B651C90A-8939-4849-A5BA-F661D00F74FE}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
Release|Any CPU = Release|Any CPU
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{2E637986-DAC0-4302-9E8D-1DB9910661CA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{2E637986-DAC0-4302-9E8D-1DB9910661CA}.Debug|Any CPU.Build.0 = Debug|Any CPU
{2E637986-DAC0-4302-9E8D-1DB9910661CA}.Release|Any CPU.ActiveCfg = Release|Any CPU
{2E637986-DAC0-4302-9E8D-1DB9910661CA}.Release|Any CPU.Build.0 = Release|Any CPU
{B651C90A-8939-4849-A5BA-F661D00F74FE}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{B651C90A-8939-4849-A5BA-F661D00F74FE}.Debug|Any CPU.Build.0 = Debug|Any CPU
{B651C90A-8939-4849-A5BA-F661D00F74FE}.Release|Any CPU.ActiveCfg = Release|Any CPU
{B651C90A-8939-4849-A5BA-F661D00F74FE}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
EndGlobalSection
GlobalSection(ExtensibilityGlobals) = postSolution
SolutionGuid = {63058FC6-85D1-483D-8014-666AD1775074}
EndGlobalSection
EndGlobal

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semester_3/racunalniska_omrezja/naloga_5/5_Naloga/ConsoleTest.csproj Normal file
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net6.0</TargetFramework>
<RootNamespace>_5_Naloga</RootNamespace>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
</Project>

120
semester_3/racunalniska_omrezja/naloga_5/5_Naloga/Program.cs Normal file
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using System;
using System.Collections.Generic;
using System.Security.Cryptography;
using System.Text;
using System.Text.Json;
namespace TestConsole
{
class Block
{
public int Index { get; set; }
public string PreviousHash { get; set; }
public string Hash { get; set; }
public string Data { get; set; }
public long Timestamp { get; set; }
public int Nonce { get; set; }
public Block(int index, string previousHash, string data)
{
Index = index;
PreviousHash = previousHash;
Data = data;
Timestamp = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
Nonce = 0;
Hash = CalculateHash();
}
public string CalculateHash()
{
using (SHA256 sha256 = SHA256.Create())
{
string hash = "";
byte[] inputBytes = Encoding.UTF8.GetBytes($"{Index}{PreviousHash}{Timestamp}{Data}{Nonce}");
byte[] outputBytes = sha256.ComputeHash(inputBytes);
hash = Convert.ToBase64String(outputBytes);
while (hash.Substring(0,3) != "000")
{
Nonce++;
inputBytes = Encoding.UTF8.GetBytes($"{Index}{PreviousHash}{Timestamp}{Data}{Nonce}");
outputBytes = sha256.ComputeHash(inputBytes);
hash = Convert.ToBase64String(outputBytes);
}
return hash;
}
}
}
class Blockchain
{
public List<Block> Chain { get; set; }
public Blockchain()
{
Chain = new List<Block>();
Chain.Add(new Block(0, "", ""));
}
public Block GetLatestBlock()
{
return Chain[Chain.Count - 1];
}
public void AddBlock(string data)
{
Block latestBlock = GetLatestBlock();
int index = latestBlock.Index + 1;
string previousHash = latestBlock.Hash;
Chain.Add(new Block(index, previousHash, data));
}
public bool IsValid()
{
for (int i = 1; i < Chain.Count; i++)
{
Block currentBlock = Chain[i];
Block previusBlock = Chain[i - 1];
if (currentBlock.PreviousHash != previusBlock.Hash) return false;
if (currentBlock.Hash != currentBlock.CalculateHash()) return false;
if (currentBlock.Index != previusBlock.Index + 1) return false;
return true;
}
return false;
}
}
class Program
{
static void Main(string[] args)
{
Blockchain blockchain = new Blockchain();
blockchain.AddBlock("This is block 1");
blockchain.AddBlock("This is block 2");
blockchain.AddBlock("This is block 3");
var options = new JsonSerializerOptions { WriteIndented = true };
string blockString = JsonSerializer.Serialize(blockchain.Chain, options);
Console.WriteLine(blockString);
/*
foreach (Block block in blockchain.Chain)
{
Console.WriteLine($"Index: {block.Index}");
Console.WriteLine($"Previous Hash: {block.PreviousHash}");
Console.WriteLine($"Hash: {block.Hash}");
Console.WriteLine($"Data: {block.Data}");
Console.WriteLine($"Timestamp: {block.Timestamp}");
Console.WriteLine();
}
Console.WriteLine(blockchain.IsValid() ? "Block Chen is valid" : "BlockChain is invalid");
*/
}
}
}

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semester_3/racunalniska_omrezja/naloga_5/WpfBlockChanApp/App.xaml Normal file
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<Application x:Class="WpfBlockChanApp.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:WpfBlockChanApp"
StartupUri="MainWindow.xaml">
<Application.Resources>
</Application.Resources>
</Application>

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semester_3/racunalniska_omrezja/naloga_5/WpfBlockChanApp/App.xaml.cs Normal file
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using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Threading.Tasks;
using System.Windows;
namespace WpfBlockChanApp
{
/// <summary>
/// Interaction logic for App.xaml
/// </summary>
public partial class App : Application
{
}
}

10
semester_3/racunalniska_omrezja/naloga_5/WpfBlockChanApp/AssemblyInfo.cs Normal file
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using System.Windows;
[assembly: ThemeInfo(
ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
//(used if a resource is not found in the page,
// or application resource dictionaries)
ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
//(used if a resource is not found in the page,
// app, or any theme specific resource dictionaries)
)]

57
semester_3/racunalniska_omrezja/naloga_5/WpfBlockChanApp/Block.cs Normal file
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Security.Cryptography;
using System.Threading.Tasks;
using System.Text.Json.Serialization;
namespace WpfBlockChanApp
{
internal class Block
{
public int Index { get; set; }
public string PreviousHash { get; set; }
public string Hash { get; set; }
public string Data { get; set; }
public long Timestamp { get; set; }
public int Nonce { get; set; }
public int Difficulty { get; set; }
public int LastAdjustBlock { get; set; }
[JsonIgnore]
public string GetString
{
get { return $"{Index}\n{Data}\n{PreviousHash}\n{Hash}"; }
}
public Block(int index, string previousHash, string data, int difficulty, int lastAdjustBlock)
{
Index = index;
PreviousHash = previousHash;
Data = data;
Timestamp = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
Nonce = 0;
Difficulty = difficulty;
LastAdjustBlock = lastAdjustBlock;
Hash = CalculateHash();
}
public string CalculateHash()
{
using (SHA256 sha256 = SHA256.Create())
{
byte[] inputBytes = Encoding.UTF8.GetBytes($"{Index}{PreviousHash}{Timestamp}{Data}{Difficulty}{Nonce}");
byte[] outputBytes = sha256.ComputeHash(inputBytes);
return Convert.ToBase64String(outputBytes);
}
}
public bool MatchDifficulty()
{
return Hash[..Difficulty] != new string('0', Difficulty);
}
}
}

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semester_3/racunalniska_omrezja/naloga_5/WpfBlockChanApp/BlockChain.cs Normal file
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using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading;
using System.Windows.Markup;
namespace WpfBlockChanApp
{
internal struct ReturnOption
{
public bool isValid;
public Block value;
public ReturnOption(bool isValid, Block value)
{
this.isValid = isValid;
this.value = value;
}
}
static class Blockchain
{
public static List<Block> Chain { get; set; }
public static Mutex chainMutax = new Mutex();
readonly static int diffAdjustInterval = 10;
readonly static long timeExpected = 100_000;
public static bool Compute { get; set; }
static Block GetLatestBlock()
{
return Chain[Chain.Count - 1];
}
static ReturnOption GetSomeBlock(int lastAdjustBlock)
{
if(lastAdjustBlock + diffAdjustInterval > Chain.Count) {
return new(false, Chain[0]);
}
ReturnOption ret = new(true, Chain[lastAdjustBlock]);
return ret;
}
public static ReturnOption ComputeBlock(string data)
{
Block lastBlock = GetLatestBlock();
int index = lastBlock.Index + 1;
string previousHash = lastBlock.Hash;
int difficulty = lastBlock.Difficulty;
int lastAdjustBlock = lastBlock.LastAdjustBlock;
var previousAdjustmentBlock = GetSomeBlock(lastAdjustBlock);
if (previousAdjustmentBlock.isValid) {
long timeTaken = lastBlock.Timestamp - previousAdjustmentBlock.value.Timestamp;
if (timeTaken < (timeExpected / 2))
difficulty += 1; // povečanje težavnosti
else if (timeTaken > (timeExpected * 2))
difficulty -= 1; // pomanjšanje težavnosti
lastAdjustBlock = index;
}
var newBlock = new Block(index, previousHash, data, difficulty, lastAdjustBlock);
while (newBlock.MatchDifficulty())
{
if (!Compute) return new ( false, newBlock );
newBlock.Nonce++;
newBlock.Hash = newBlock.CalculateHash();
}
return new( true, newBlock );
}
public static bool AddBlock(Block block)
{
Block previusBlock = GetLatestBlock();
if (block.PreviousHash != previusBlock.Hash) return false;
if (block.Hash != block.CalculateHash()) return false;
if (block.Index != previusBlock.Index + 1) return false;
chainMutax.WaitOne();
Chain.Add(block);
chainMutax.ReleaseMutex();
return true;
}
public static bool IsValid(List<Block> chain)
{
for (int i = 1; i < chain.Count; i++)
{
Block currentBlock = chain[i];
Block previusBlock = chain[i - 1];
if (currentBlock.PreviousHash != previusBlock.Hash) return false;
if (currentBlock.Hash != currentBlock.CalculateHash()) return false;
if (currentBlock.Index != previusBlock.Index + 1) return false;
if (currentBlock.Timestamp > previusBlock.Timestamp + 60_000) return false;
}
return true;
}
public static bool Evaluete(List<Block> chain1, List<Block> chain2)
{
List<Block> result = new List<Block>();
double chain1Dif = 0;
foreach (var item in chain1)
{
chain1Dif += Math.Pow(2, item.Difficulty);
}
double chain2Dif = 0;
foreach (var item in chain2)
{
chain2Dif += Math.Pow(2, item.Difficulty);
}
return (chain1Dif > chain2Dif) ? false : true;
}
}
}

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semester_3/racunalniska_omrezja/naloga_5/WpfBlockChanApp/MainWindow.xaml Normal file
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<Window x:Class="WpfBlockChanApp.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:WpfBlockChanApp"
mc:Ignorable="d"
Closing="Window_Closing"
Title="MainWindow" MinHeight="450" MinWidth="800" Width="800" Height="450">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="100"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Button Content="Start" HorizontalAlignment="Left" Margin="10,34,0,0" VerticalAlignment="Top" Click="Start_Click"/>
<Button Content="Stop" HorizontalAlignment="Left" Margin="10,60,0,0" VerticalAlignment="Top" Click="Stop_Click"/>
<Label Grid.Row="0" Content="MyName" HorizontalAlignment="Left" Margin="82,14,0,0" VerticalAlignment="Top"/>
<TextBox HorizontalAlignment="Left" Margin="154,18,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="120"/>
<Label Content="Conect To" HorizontalAlignment="Left" Margin="82,49,0,0" VerticalAlignment="Top"/>
<TextBox Name="ConnectBox" HorizontalAlignment="Left" Margin="154,57,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="120"/>
<Button Content="Connect" HorizontalAlignment="Left" Margin="292,57,0,0" VerticalAlignment="Top" Click="Connect_Click"/>
<Label Content="My Port" HorizontalAlignment="Left" Margin="392,14,0,0" VerticalAlignment="Top"/>
<Label Name="MyPort" Content="" HorizontalAlignment="Left" Margin="458,14,0,0" VerticalAlignment="Top"/>
<Grid Grid.Row="1">
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<ListView Name="ChainView" Grid.Column="0" Margin="10">
<ListView.ItemTemplate>
<DataTemplate>
<StackPanel Margin="2">
<Label Content="{Binding Path=GetString}"/>
</StackPanel>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
<ListView Name="LogView" Grid.Column="1" Margin="10">
<ListView.ItemTemplate>
<DataTemplate>
<StackPanel>
<Label Name="Naslov" Content="{Binding}"/>
</StackPanel>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</Grid>
</Grid>
</Window>

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Threading;
using System.Windows.Threading;
using System.Collections.ObjectModel;
using System.Collections;
using System.Data;
using System.Net.Sockets;
using System.Net;
using System.Windows.Media.Media3D;
using System.Text.Json;
using System.Security.Claims;
namespace WpfBlockChanApp
{
public partial class MainWindow : Window
{
DispatcherTimer timer1s;
DispatcherTimer timer1m;
ObservableCollection<Block> observableBlockChain = new ObservableCollection<Block>();
ObservableCollection<int> observableString = new ObservableCollection<int>();
//static List<string> strings = new List<string>();
static List<int> clients = new List<int>();
const string STD_IP = "127.0.0.1";
static string data;
public MainWindow()
{
InitializeComponent();
this.DataContext = this;
ChainView.ItemsSource = observableBlockChain;
LogView.ItemsSource = observableString;
timer1s = new DispatcherTimer();
timer1s.Interval = TimeSpan.FromSeconds(1);
timer1s.Tick += UpdateData;
timer1s.Start();
timer1m = new DispatcherTimer();
timer1m.Interval = TimeSpan.FromSeconds(30);
timer1m.Tick += Timer1m_Tick;
timer1m.Start();
tcpListener = new TcpListener(IPAddress.Parse(STD_IP), 0);
tcpListener.Start();
data = ((IPEndPoint)tcpListener.LocalEndpoint).Port.ToString();
MyPort.Content = data;
Blockchain.Chain = new List<Block>();
Blockchain.Compute = true;
Block tmpBlock = new Block(0, "", "", 0, 0);
tmpBlock.Hash = "";
Blockchain.Chain.Add(tmpBlock);
stopNetwork = false;
listenThread = new Thread(() => listenerThredFunction());
listenThread.Start();
}
private void Timer1m_Tick(object? sender, EventArgs e)
{
UpdateClients();
}
void UpdateData(object? sender, EventArgs e)
{
for (int i = observableBlockChain.Count; i < Blockchain.Chain.Count; i++)
observableBlockChain.Add(Blockchain.Chain[i]);
for (int i = observableString.Count; i < clients.Count; i++)
observableString.Add(clients[i]);
}
Thread calcualteBlockThread;
static bool stopNetwork = false;
static bool stopMiner = false;
static void ComputeBlockThreadFunction()
{
while (true)
{
if (stopMiner) break;
Blockchain.Compute = true;
ReturnOption option = Blockchain.ComputeBlock(data);
if (!option.isValid) { continue; }
if (Blockchain.AddBlock(option.value))
{
UpdateClients(option.value);
//UpdateClients();
}
}
}
static TcpListener tcpListener;
Thread listenThread;
static void listenerThredFunction()
{
while (true)
{
if (stopNetwork) break;
listen();
}
}
static void listen()
{
try
{
using TcpClient tcpClient = tcpListener.AcceptTcpClient();
using NetworkStream networkStream = tcpClient.GetStream();
byte[] buffer = new byte[4];
int readByts = networkStream.Read(buffer, 0, buffer.Length);
if (readByts <= 0) return;
int sizeOfStruct = BitConverter.ToInt32(buffer);
byte[] isListBuffer = new byte[1];
readByts = networkStream.Read(isListBuffer, 0, isListBuffer.Length);
if(readByts <= 0) return;
bool isList = BitConverter.ToBoolean(isListBuffer);
byte[] data = new byte[sizeOfStruct];
int messageSize = networkStream.Read(data, 0, data.Length);
if (messageSize <= 0) return;
string messageString = Encoding.UTF8.GetString(data, 0, messageSize);
if (isList)
{
List<Block> chain = JsonSerializer.Deserialize<List<Block>>(messageString);
if (!Blockchain.IsValid(chain)) return;
bool update = Blockchain.Evaluete(chain, Blockchain.Chain);
if (update)
{
Blockchain.Chain = chain;
Blockchain.Compute = false;
UpdateClients();
}
}
else
{
Block block = JsonSerializer.Deserialize<Block>(messageString);
if (Blockchain.AddBlock(block))
{
Blockchain.Compute = false;
UpdateClients(block);
}
}
}
catch (Exception e)
{
}
}
static void UpdateClients()
{
string chainString = JsonSerializer.Serialize(Blockchain.Chain);
foreach (var clien in clients)
{
UpdateClient(clien, chainString, true);
}
}
static void UpdateClients(Block block)
{
string blockString = JsonSerializer.Serialize(block);
foreach (var clien in clients)
{
UpdateClient(clien, blockString, false);
}
}
static void UpdateClient(int port, string data, bool isListBool)
{
try
{
using TcpClient tcpClient = new TcpClient();
tcpClient.Connect(IPAddress.Parse(STD_IP), port);
using NetworkStream networkStream = tcpClient.GetStream();
byte[] dataBytes = Encoding.UTF8.GetBytes(data);
byte[] isList = BitConverter.GetBytes(isListBool);
byte[] size = BitConverter.GetBytes(dataBytes.Length);
networkStream.Write(size, 0, size.Length);
networkStream.Write(isList, 0, isList.Length);
networkStream.Write(dataBytes, 0, dataBytes.Length);
}catch(Exception e)
{
}
}
private void Start_Click(object sender, RoutedEventArgs e)
{
Blockchain.Compute = true;
stopMiner = false;
calcualteBlockThread = new Thread(() => ComputeBlockThreadFunction());
calcualteBlockThread.Start();
}
private void Stop_Click(object sender, RoutedEventArgs e)
{
Blockchain.Compute = false;
stopMiner = true;
}
private void Connect_Click(object sender, RoutedEventArgs e)
{
int i = 0;
if(int.TryParse(ConnectBox.Text, out i))
{
clients.Add(i);
ConnectBox.Text = "";
}
}
private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
stopNetwork = true;
stopMiner = true;
tcpListener.Stop();
Blockchain.Compute = false;
}
}
}

10
semester_3/racunalniska_omrezja/naloga_5/WpfBlockChanApp/WpfBlockChanApp.csproj Normal file
View File

@@ -0,0 +1,10 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>WinExe</OutputType>
<TargetFramework>net6.0-windows</TargetFramework>
<Nullable>enable</Nullable>
<UseWPF>true</UseWPF>
</PropertyGroup>
</Project>