authorization system

NetworkResurrector.Api/Authentication/BasicAuthenticationHandler.cs

@@ -3,11 +3,8 @@ using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
 using NetworkResurrector.Application.Services;
 using NetworkResurrector.Domain.Entities;
-using System;
-using System.Linq;
 using System.Net.Http.Headers;
 using System.Security.Claims;
-using System.Text;
 using System.Text.Encodings.Web;
 using System.Threading.Tasks;
 
@@ -31,12 +28,9 @@ namespace NetworkResurrector.Api.Authentication
             User user;
             try
             {
-                var authHeader = AuthenticationHeaderValue.Parse(Request.Headers["Authorization"]);
-                var credentialBytes = Convert.FromBase64String(authHeader.Parameter);
-                var credentials = Encoding.UTF8.GetString(credentialBytes).Split(':');
-                var username = credentials.First();
-                var password = credentials.Last();
-                user = await _userService.Authenticate(username, password);
+                var authorizationHeader = AuthenticationHeaderValue.Parse(Request.Headers["Authorization"]);
+                var token = authorizationHeader.Parameter;
+                user = await _userService.Authenticate(token);
             }
             catch
             {
@@ -47,7 +41,7 @@ namespace NetworkResurrector.Api.Authentication
                 return AuthenticateResult.Fail("Invalid Username or Password");
 
             var claims = new[] {
-                new Claim(ClaimTypes.NameIdentifier, user.Id.ToString()),
+                new Claim(ClaimTypes.NameIdentifier, user.UserId.ToString()),
                 new Claim(ClaimTypes.Name, user.UserName),
             };
 

NetworkResurrector.Api/Controllers/ResurrectorController.cs

@@ -18,11 +18,18 @@ namespace NetworkResurrector.Api.Controllers
             _mediator = mediator;
         }
 
-        [HttpGet("token")]
+        [AllowAnonymous]
+        [HttpGet("token/{userName}/{password}")]
         public async Task<IActionResult> GetToken([FromRoute] GetToken.Query query)
         {
             var result = await _mediator.Send(query);
             return Ok(result);
         }
+
+        [HttpGet("validate-token")]
+        public IActionResult ValidateToken()
+        {
+            return Ok("Valid");
+        }
     }
 }

NetworkResurrector.Api/appsettings.json

@@ -11,8 +11,11 @@
     }
   },
   "AllowedHosts": "*",
-  "Credentials": {
-    "UserName": "***REMOVED***",
-    "Password": "***REMOVED***"
-  }
+  "Users": [
+    {
+      "UserId": 1,
+      "UserName": "***REMOVED***",
+      "Password": "***REMOVED***"
+    }
+  ]
 }

NetworkResurrector.Application/DependencyInjectionExtensions.cs

@@ -1,5 +1,6 @@
 using Microsoft.Extensions.DependencyInjection;
 using NetworkResurrector.Application.Services;
+using NetworkResurrector.Application.Stores;
 using NetworkResurrector.Domain.Services;
 
 namespace NetworkResurrector.Application
@@ -10,6 +11,12 @@ namespace NetworkResurrector.Application
         {
             services.AddSingleton<IParamProvider, ParamProvider>();
             services.AddScoped<IUserService, UserService>();
+            services.AddStores();
+        }
+
+        private static void AddStores(this IServiceCollection services)
+        {
+            services.AddSingleton<ISecurityStore, SecurityStore>();
         }
     }
 }

NetworkResurrector.Application/Mappings/MappingProfile.cs

@@ -1,4 +1,6 @@
 using AutoMapper;
+using NetworkResurrector.Application.Queries;
+using NetworkResurrector.Domain.Models;
 
 namespace NetworkResurrector.Application.Mappings
 {
@@ -6,6 +8,7 @@ namespace NetworkResurrector.Application.Mappings
     {
         public MappingProfile()
         {
+            CreateMap<SecurityToken, GetToken.Model>();
         }
     }
 }

NetworkResurrector.Application/NetworkResurrector.Application.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>

NetworkResurrector.Application/Queries/GetToken.cs

@@ -1,5 +1,6 @@
 using AutoMapper;
 using MediatR;
+using NetworkResurrector.Application.Services;
 using System;
 using System.Threading;
 using System.Threading.Tasks;
@@ -17,23 +18,29 @@ namespace NetworkResurrector.Application.Queries
 
         public class Model
         {
-            public Guid Token { get; set; }
+            public string Token { get; set; }
             public DateTime ValidUntil { get; set; }
         }
 
         public class QueryHandler : IRequestHandler<Query, Model>
         {
+            private readonly IUserService _userService;
             private readonly IMapper _mapper;
 
-            public QueryHandler(IMapper mapper)
+            public QueryHandler(IUserService userService, IMapper mapper)
             {
+                _userService = userService;
                 _mapper = mapper;
             }
 
             public async Task<Model> Handle(Query request, CancellationToken cancellationToken)
             {
+                var securityToken = await _userService.Login(request.UserName, request.Password);
+                if (securityToken == null)
+                    return null;
 
-                return new Model() { Token = Guid.NewGuid(), ValidUntil = DateTime.Now };
+                var result = _mapper.Map<Model>(securityToken);
+                return result;
             }
         }
     }

NetworkResurrector.Application/Services/ParamProvider.cs

@@ -1,5 +1,5 @@
 using Microsoft.Extensions.Configuration;
-using NetworkResurrector.Domain.Models.Settings;
+using NetworkResurrector.Domain.Entities;
 using NetworkResurrector.Domain.Services;
 
 namespace NetworkResurrector.Application.Services
@@ -13,6 +13,6 @@ namespace NetworkResurrector.Application.Services
             _configuration = configuration;
         }
 
-        public Credentials Credentials => _configuration.GetSection("Credentials").Get<Credentials>();
+        public User[] Users => _configuration.GetSection("Users").Get<User[]>();
     }
 }

NetworkResurrector.Application/Services/UserService.cs

@@ -1,34 +1,54 @@
-using NetworkResurrector.Domain.Entities;
+using NetworkResurrector.Application.Stores;
+using NetworkResurrector.Domain.Entities;
+using NetworkResurrector.Domain.Models;
 using NetworkResurrector.Domain.Services;
+using System;
+using System.Linq;
 using System.Threading.Tasks;
 
 namespace NetworkResurrector.Application.Services
 {
     public interface IUserService
     {
-        Task<User> Authenticate(string username, string password);
+        Task<SecurityToken> Login(string userName, string password);
+        Task<User> Authenticate(string token);
     }
 
     public class UserService : IUserService
     {
         private readonly IParamProvider _paramProvider;
+        private readonly ISecurityStore _securityStore;
 
-        public UserService(IParamProvider paramProvider)
+        public UserService(IParamProvider paramProvider, ISecurityStore securityStore)
         {
             _paramProvider = paramProvider;
+            _securityStore = securityStore;
         }
 
-        public async Task<User> Authenticate(string username, string password)
+        public async Task<SecurityToken> Login(string userName, string password)
         {
-            return await Task.Run(() => CheckCredentials(username, password));
-        }
-
-        private User CheckCredentials(string username, string password)
-        {
-            if (_paramProvider.Credentials.UserName == username && _paramProvider.Credentials.Password == password)
-                return new User() { UserName = username, Id = 1 };
-            else
+            var user = _paramProvider.Users.FirstOrDefault(z => z.UserName == userName && z.Password == password);
+            if (user == null)
                 return null;
+
+            var token = $"{Guid.NewGuid()}-{Guid.NewGuid()}-{user.UserId}";
+            _securityStore.SetToken(token, user.UserId);
+
+            var securityToken = new SecurityToken() { UserId = user.UserId, Token = token };
+            return securityToken;
+        }
+
+        public async Task<User> Authenticate(string token)
+        {
+            var tokenValidation = _securityStore.ValidateToken(token);
+            if (tokenValidation.Success)
+            {
+                var user = _paramProvider.Users.FirstOrDefault(z => z.UserId == tokenValidation.UserId);
+                if (user != null)
+                    return user;
+            }
+
+            return null;
         }
     }
 }

NetworkResurrector.Application/Stores/ISecurityStore.cs

@@ -0,0 +1,10 @@
+using NetworkResurrector.Domain.Models;
+
+namespace NetworkResurrector.Application.Stores
+{
+    public interface ISecurityStore
+    {
+        void SetToken(string token, int userId);
+        TokenValidation ValidateToken(string token);
+    }
+}

NetworkResurrector.Application/Stores/SecurityStore.cs

@@ -0,0 +1,42 @@
+using NetworkResurrector.Domain.Models;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace NetworkResurrector.Application.Stores
+{
+    public class SecurityStore : ISecurityStore
+    {
+        private List<SecurityToken> Tokens { get; }
+
+        public SecurityStore()
+        {
+            Tokens = new List<SecurityToken>();
+        }
+
+        public void SetToken(string token, int userId)
+        {
+            var registered = Tokens.FirstOrDefault(z => z.UserId == userId);
+            if (registered == null)
+                Tokens.Add(new SecurityToken() { UserId = userId, Token = token });
+            else
+                registered.Token = token;
+        }
+
+        public TokenValidation ValidateToken(string token)
+        {
+            var lastIndexOfSeparator = token.LastIndexOf('-') + 1;
+            var userIdString = token.Substring(lastIndexOfSeparator, token.Length - lastIndexOfSeparator);
+
+            if (!int.TryParse(userIdString, out int userId))
+                return InvalidToken;
+
+            var valid = Tokens.FirstOrDefault(z => z.UserId == userId && z.Token == token);
+            if (valid != null)
+                return new TokenValidation() { Success = true, UserId = userId };
+
+            return InvalidToken;
+        }
+
+        private TokenValidation InvalidToken => new TokenValidation() { Success = false };
+    }
+}

NetworkResurrector.Domain/Entities/User.cs

@@ -2,7 +2,7 @@
 {
     public class User
     {
-        public int Id { get; set; }
+        public int UserId { get; set; }
         public string UserName { get; set; }
         public string Password { get; set; }
     }

NetworkResurrector.Domain/Models/SecurityToken.cs

@@ -0,0 +1,11 @@
+using System;
+
+namespace NetworkResurrector.Domain.Models
+{
+    public class SecurityToken
+    {
+        public int UserId { get; set; }
+        public string Token { get; set; }
+        public DateTime ValidUntil { get; set; }
+    }
+}

NetworkResurrector.Domain/Models/TokenValidation.cs

@@ -0,0 +1,8 @@
+namespace NetworkResurrector.Domain.Models
+{
+    public class TokenValidation
+    {
+        public bool Success { get; set; }
+        public int UserId { get; set; }
+    }
+}

NetworkResurrector.Domain/Services/IParamProvider.cs

@@ -1,9 +1,9 @@
-using NetworkResurrector.Domain.Models.Settings;
+using NetworkResurrector.Domain.Entities;
 
 namespace NetworkResurrector.Domain.Services
 {
     public interface IParamProvider
     {
-        Credentials Credentials { get; }
+        User[] Users { get; }
     }
 }