add auth func

RescuerLaApp/Models/AppStatusInfo.cs

@@ -31,7 +31,8 @@ private ISolidColorBrush GetColor()
                 case Status.Ready: return new SolidColorBrush(Color.FromRgb(0, 128, 255));
                 case Status.Success: return new SolidColorBrush(Color.FromRgb(0, 135, 60));
                 case Status.Working: return new SolidColorBrush(Color.FromRgb(226, 90, 0));
-                case Status.Error: return new SolidColorBrush(Color.FromRgb(216, 14, 0)); 
+                case Status.Error: return new SolidColorBrush(Color.FromRgb(216, 14, 0));
+                case Status.Unauthenticated: return new SolidColorBrush(Color.FromRgb(120, 0, 120));
                 default: throw new Exception($"Invalid app status {_status.ToString()}");
             }
         }

RescuerLaApp/Models/Enums.cs

@@ -7,6 +7,7 @@ public enum Status
             Ready,
             Working,
             Success,
+            Unauthenticated,
             Error
         }
 

RescuerLaApp/Models/PasswordHasher.cs

@@ -0,0 +1,83 @@
+using System;
+using System.Linq;
+using System.Security.Cryptography;
+using Microsoft.AspNetCore.Cryptography.KeyDerivation;
+
+namespace RescuerLaApp.Models
+{
+    public class PasswordHasher
+    {
+        public string GenerateIdentityV3Hash(string password, KeyDerivationPrf prf = KeyDerivationPrf.HMACSHA256, int iterationCount = 10000, int saltSize = 16)
+        {
+            using (var rng = RandomNumberGenerator.Create()){
+                var salt = new byte[saltSize];
+                rng.GetBytes(salt);
+
+                var pbkdf2Hash = KeyDerivation.Pbkdf2(password, salt, prf, iterationCount, 32);
+                return Convert.ToBase64String(ComposeIdentityV3Hash(salt, (uint)iterationCount, pbkdf2Hash));
+            }
+        }
+        public bool VerifyIdentityV3Hash(string password, string passwordHash)
+        {
+            var identityV3HashArray = Convert.FromBase64String(passwordHash);
+            if (identityV3HashArray[0] != 1) throw new InvalidOperationException("passwordHash is not Identity V3");
+
+            var prfAsArray = new byte[4];
+            Buffer.BlockCopy(identityV3HashArray, 1, prfAsArray, 0, 4);
+            var prf = (KeyDerivationPrf)ConvertFromNetworOrder(prfAsArray);
+
+            var iterationCountAsArray = new byte[4];
+            Buffer.BlockCopy(identityV3HashArray, 5, iterationCountAsArray, 0, 4);
+            var iterationCount = (int)ConvertFromNetworOrder(iterationCountAsArray);
+
+            var saltSizeAsArray = new byte[4];
+            Buffer.BlockCopy(identityV3HashArray, 9, saltSizeAsArray, 0, 4);
+            var saltSize = (int)ConvertFromNetworOrder(saltSizeAsArray);
+
+            var salt = new byte[saltSize];
+            Buffer.BlockCopy(identityV3HashArray, 13, salt, 0, saltSize);
+
+            var savedHashedPassword = new byte[identityV3HashArray.Length - 1 - 4 - 4 - 4 - saltSize];
+            Buffer.BlockCopy(identityV3HashArray, 13 + saltSize, savedHashedPassword, 0, savedHashedPassword.Length);
+
+            var hashFromInputPassword = KeyDerivation.Pbkdf2(password, salt, prf, iterationCount, 32);
+
+            return AreByteArraysEqual(hashFromInputPassword, savedHashedPassword);
+        }
+        private byte[] ComposeIdentityV3Hash(byte[] salt, uint iterationCount, byte[] passwordHash)
+        {
+            var hash = new byte[1 + 4/*KeyDerivationPrf value*/ + 4/*Iteration count*/ + 4/*salt size*/ + salt.Length /*salt*/ + 32 /*password hash size*/];
+            hash[0] = 1; //Identity V3 marker
+
+            Buffer.BlockCopy(ConvertToNetworkOrder((uint)KeyDerivationPrf.HMACSHA256), 0, hash, 1, sizeof(uint));
+            Buffer.BlockCopy(ConvertToNetworkOrder((uint)iterationCount), 0, hash, 1 + sizeof(uint), sizeof(uint));
+            Buffer.BlockCopy(ConvertToNetworkOrder((uint)salt.Length), 0, hash, 1 + 2 * sizeof(uint), sizeof(uint));
+            Buffer.BlockCopy(salt, 0, hash, 1 + 3 * sizeof(uint), salt.Length);
+            Buffer.BlockCopy(passwordHash, 0, hash, 1 + 3 * sizeof(uint) + salt.Length, passwordHash.Length);
+
+            return hash;
+        }        
+
+        private bool AreByteArraysEqual(byte[] array1, byte[] array2)
+        {
+            if (array1.Length != array2.Length) return false;
+
+            var areEqual = true;
+            for (var i = 0; i < array1.Length; i++)
+            {
+                areEqual &= (array1[i] == array2[i]);
+            }
+            return areEqual;
+        }
+
+        private byte[] ConvertToNetworkOrder(uint number)
+        {
+            return BitConverter.GetBytes(number).Reverse().ToArray();
+        }
+
+        private uint ConvertFromNetworOrder(byte[] reversedUint)
+        {
+            return BitConverter.ToUInt32(reversedUint.Reverse().ToArray(), 0);
+        }       
+    }
+}

RescuerLaApp/Program.cs

@@ -11,7 +11,7 @@ internal static class Program
     {
         private static void Main(string[] args)
         {
-            Console.WriteLine("Lacmus desktop application. Version 0.3.0 alpha. \nCopyright (c) 2019 Georgy Perevozghikov <[email protected]>\nGithub page: https://github.com/lizaalert/lacmus/.\nProvided by Yandex Cloud: https://cloud.yandex.com/.");
+            Console.WriteLine("Lacmus desktop application. Version 0.3.1 alpha. \nCopyright (c) 2019 Georgy Perevozghikov <[email protected]>\nGithub page: https://github.com/lizaalert/lacmus/.\nProvided by Yandex Cloud: https://cloud.yandex.com/.");
             Console.WriteLine("This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.");
             Console.WriteLine("This is free software, and you are welcome to redistribute it\nunder certain conditions; type `show c' for details.");
             Console.WriteLine("------------------------------------");

RescuerLaApp/RescuerLaApp.csproj

@@ -23,6 +23,7 @@
     <PackageReference Include="Docker.DotNet" Version="3.125.2" />
     <PackageReference Include="MessageBox.Avalonia" Version="0.8.3" />
     <PackageReference Include="MetadataExtractor" Version="2.1.0" />
+    <PackageReference Include="Microsoft.AspNetCore.Cryptography.KeyDerivation" Version="3.0.0" />
     <PackageReference Include="NewtonSoft.Json" Version="12.0.2" />
     <PackageReference Include="ReactiveUI.Fody" Version="9.16.3" />
   </ItemGroup>

RescuerLaApp/ViewModels/MainWindowViewModel.cs

@@ -20,6 +20,7 @@
 using ReactiveUI;
 using ReactiveUI.Fody.Helpers;
 using Newtonsoft.Json;
+using RescuerLaApp.Views;
 using Directory = System.IO.Directory;
 
 namespace RescuerLaApp.ViewModels
@@ -48,7 +49,11 @@ public MainWindowViewModel()
 
             var canExecute = this
                 .WhenAnyValue(x => x.Status)
-                .Select(status => status.Status != Enums.Status.Working);
+                .Select(status => status.Status != Enums.Status.Working && status.Status != Enums.Status.Unauthenticated);
+
+            var canAuth = this
+                .WhenAnyValue(x => x.Status)
+                .Select(status => status.Status == Enums.Status.Unauthenticated);
 
             var canShowPedestrians = this
                 .WhenAnyValue(x => x._frames)
@@ -75,7 +80,9 @@ public MainWindowViewModel()
             ShowGeoDataCommand = ReactiveCommand.Create(ShowGeoData, canExecute);
             HelpCommand = ReactiveCommand.Create(Help);
             AboutCommand = ReactiveCommand.Create(About);
-            ExitCommand = ReactiveCommand.Create(Exit, canExecute);
+            SignUpCommand = ReactiveCommand.Create(SignUp, canAuth);
+            SignInCommand = ReactiveCommand.Create(SignIn, canAuth);
+            ExitCommand = ReactiveCommand.Create(Exit);
         }
 
         public void UpdateFramesRepo()
@@ -106,7 +113,7 @@ public void UpdateFramesRepo()
 
         [Reactive] public List<Frame> Frames { get; set; } = new List<Frame>();
 
-        [Reactive] public AppStatusInfo Status { get; set; } = new AppStatusInfo { Status = Enums.Status.Ready };
+        [Reactive] public AppStatusInfo Status { get; set; } = new AppStatusInfo { Status = Enums.Status.Unauthenticated };
 
         [Reactive] public ImageBrush ImageBrush { get; set; } = new ImageBrush { Stretch = Stretch.Uniform };
 
@@ -140,6 +147,8 @@ public void UpdateFramesRepo()
         public ReactiveCommand<Unit, Unit> ShowGeoDataCommand { get; }
         public ReactiveCommand<Unit, Unit> HelpCommand { get; }
         public ReactiveCommand<Unit, Unit> AboutCommand { get; }
+        public ReactiveCommand<Unit, Unit> SignUpCommand { get; }
+        public ReactiveCommand<Unit, Unit> SignInCommand { get; }
         public ReactiveCommand<Unit, Unit> ExitCommand { get; }
 
 
@@ -625,7 +634,7 @@ public async void About()
                     new ButtonDefinition{Name = "Github"}
                 },
                 ContentTitle = "About",
-                ContentHeader = "Lacmus desktop application. Version 0.3.0 alpha.",
+                ContentHeader = "Lacmus desktop application. Version 0.3.1 alpha.",
                 ContentMessage = message,
                 Icon = Icon.Avalonia,
                 Style = Style.None,
@@ -640,6 +649,19 @@ public async void About()
                 case "github": OpenUrl("https://github.com/lizaalert/lacmus"); break;
             }
         }
+
+        public async void SignUp()
+        {
+            var result = await Views.SignUpWindow.Show(null);
+            if(Status.Status == Enums.Status.Unauthenticated && result.IsSignIn)
+                Status = new AppStatusInfo() {Status = Enums.Status.Ready};
+        }
+        public async void SignIn()
+        {
+            var result = await Views.SignInWindow.Show(null);
+            if(Status.Status == Enums.Status.Unauthenticated && result.IsSignIn)
+                Status = new AppStatusInfo() {Status = Enums.Status.Ready};
+        }
 
         public async void Exit()
         {

RescuerLaApp/Views/MainWindow.xaml

@@ -25,6 +25,9 @@
           <MenuItem Name="mFileSave" Header="Save all" Command="{Binding SaveAllCommand}"/>
           <MenuItem Name="mFileSaveAllImagesWithObjects" Header="Save only images with pedestrians" Command="{Binding SaveAllImagesWithObjectsCommand}"/>
           <Separator></Separator>
+          <MenuItem Name="mSIgnIn" Header="Sign in" Command="{Binding SignInCommand}"/>
+          <MenuItem Name="mSignUp" Header="Sign up" Command="{Binding SignUpCommand}"/>
+          <Separator></Separator>
           <MenuItem Name="mFileExit" Header="Exit" Command="{Binding ExitCommand}"/>
         </MenuItem>
         <MenuItem Name="mModel" Header="Model">
@@ -49,6 +52,7 @@
       </Menu>
       <ToolTip>
         <StackPanel Orientation="Horizontal">
+          <Button Name="bSignIn" Command="{Binding SignInCommand}">Suin In</Button>
           <Button Name="bOpen" Command="{Binding OpenFileCommand}">Open</Button>
           <Button Name="bPredict" Command="{Binding PredictAllCommand}">Predict all</Button>
           <Separator/>

RescuerLaApp/Views/SignInWindow.xaml

@@ -0,0 +1,20 @@
+<Window xmlns="https://github.com/avaloniaui"
+        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"
+        mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+        x:Class="RescuerLaApp.Views.SignInWindow" SizeToContent="WidthAndHeight" CanResize="False">
+    <StackPanel HorizontalAlignment="Center">
+        <TextBlock Margin="10 2 10 2">Email</TextBlock>
+        <TextBox Name="tbEmail" Margin="10 2 10 2" Height="30" Width="300"></TextBox>
+        <TextBlock Margin="10 2 10 2">Password</TextBlock>
+        <TextBox Name="tbPassword" Margin="10 2 10 2" Height="30" Width="300"></TextBox>
+        <StackPanel HorizontalAlignment="Center" Orientation="Horizontal" Name="Buttons">
+            <StackPanel.Styles>
+                <Style Selector="Button">
+                    <Setter Property="Margin" Value="10, 5, 10, 5"/>
+                </Style>
+            </StackPanel.Styles>
+        </StackPanel>
+    </StackPanel>
+</Window>

RescuerLaApp/Views/SignInWindow.xaml.cs

@@ -0,0 +1,113 @@
+using System;
+using System.Data;
+using System.IO;
+using System.Threading.Tasks;
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using Avalonia.Markup.Xaml;
+using MessageBox.Avalonia.DTO;
+using MessageBox.Avalonia.Enums;
+using Newtonsoft.Json;
+using RescuerLaApp.Models;
+
+namespace RescuerLaApp.Views
+{
+    class SignInWindow : Window
+    {
+        [JsonObject]
+        public class SignInResult
+        {
+            [JsonProperty("email")]
+            public string Email { get; set; }
+            [JsonProperty("passwordHash")]
+            public string PasswordHash { get; set; }
+            [JsonProperty("id")]
+            public int Id { get; set; }
+            [JsonProperty("time")]
+            public string Time { get; set; }
+
+            public bool IsSignIn { get; set; } = false;
+        }
+
+        public SignInWindow()
+        {
+            AvaloniaXamlLoader.Load(this);
+        }
+
+        public static Task<SignInResult> Show(Window parent)
+        {
+            var title = "Sign In";
+            var msgbox = new SignInWindow()
+            {
+                Title = title
+            };
+            var buttonPanel = msgbox.FindControl<StackPanel>("Buttons");
+
+            SignInResult res = new SignInResult();
+
+            void AddButton(string caption)
+            {
+                var btn = new Button {Content = caption};
+                btn.Click += (_, __) =>
+                {
+                    var patch = AppDomain.CurrentDomain.BaseDirectory + "user_info";
+                    if (File.Exists(patch))
+                    {
+                        res = JsonConvert.DeserializeObject<SignInResult>(File.ReadAllText(patch));
+                    }
+                    else
+                    {
+                        ShowError("There are no account. Please sign up");
+                        return;
+                    }
+
+                    var passwordHash = msgbox.FindControl<TextBox>("tbPassword").Text;
+                    var email = msgbox.FindControl<TextBox>("tbEmail").Text;
+
+                    if (string.IsNullOrWhiteSpace(passwordHash) || passwordHash.Length < 6)
+                    {
+                        ShowError("Incorrect Password");
+                        return;
+                    }
+                    PasswordHasher hasher = new PasswordHasher();
+                    if (string.IsNullOrWhiteSpace(passwordHash) || !hasher.VerifyIdentityV3Hash(passwordHash, res.PasswordHash))
+                    {
+                        ShowError("Incorrect Password");
+                        return;
+                    }
+                    if (string.IsNullOrWhiteSpace(email) || !email.Contains('@') || !email.Contains('.') || email != res.Email)
+                    {
+                        ShowError("Incorrect Email");
+                        return;
+                    }
+
+                    res.IsSignIn = true;
+                    msgbox.Close();
+                };
+                buttonPanel.Children.Add(btn);
+            }
+
+            AddButton("Sign Ip");
+            var tcs = new TaskCompletionSource<SignInResult>();
+            msgbox.Closed += delegate { tcs.TrySetResult(res); };
+            if (parent != null)
+                msgbox.ShowDialog(parent);
+            else msgbox.Show();
+            return tcs.Task;
+        }
+
+        private static async void ShowError(string message)
+        {
+            var msgbox = new MessageBox.Avalonia.MessageBoxWindow(new MessageBoxParams
+            {
+                Button = ButtonEnum.Ok,
+                ContentTitle = "Error",
+                ContentMessage = message,
+                Icon = MessageBox.Avalonia.Enums.Icon.Error,
+                Style = Style.None,
+                ShowInCenter = true
+            });
+            var result = await msgbox.Show();
+        }
+    }
+}

RescuerLaApp/Views/SignUpWindow.xaml

@@ -0,0 +1,26 @@
+<Window xmlns="https://github.com/avaloniaui"
+        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"
+        mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+        x:Class="RescuerLaApp.Views.SignUpWindow" SizeToContent="WidthAndHeight" CanResize="False">
+    <StackPanel HorizontalAlignment="Center">
+        <TextBlock Margin="10 2 10 2">Email</TextBlock>
+        <TextBox Name="tbEmail" Margin="10 2 10 2" Height="30" Width="300"></TextBox>
+        <TextBlock Margin="10 2 10 2">Nick name</TextBlock>
+        <TextBox Name="tbNickName" Margin="10 2 10 2" Height="30" Width="300"></TextBox>
+        <TextBlock Margin="10 2 10 2">First name</TextBlock>
+        <TextBox Name="tbFirstName" Margin="10 2 10 2" Height="30" Width="300"></TextBox>
+        <TextBlock Margin="10 2 10 2">Last name</TextBlock>
+        <TextBox Name="tbLastName" Margin="10 2 10 2" Height="30" Width="300"></TextBox>
+        <TextBlock Margin="10 2 10 2">Password</TextBlock>
+        <TextBox Name="tbPassword" Margin="10 2 10 2" Height="30" Width="300"></TextBox>
+        <StackPanel HorizontalAlignment="Center" Orientation="Horizontal" Name="Buttons">
+            <StackPanel.Styles>
+                <Style Selector="Button">
+                    <Setter Property="Margin" Value="10, 5, 10, 5"/>
+                </Style>
+            </StackPanel.Styles>
+        </StackPanel>
+    </StackPanel>
+</Window>