Initial

MareSynchronos/WebAPI/AccountRegistrationService.cs

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+using MareSynchronos.API.Dto.Account;
+using MareSynchronos.API.Routes;
+using MareSynchronos.Services;
+using MareSynchronos.Services.ServerConfiguration;
+using MareSynchronos.Utils;
+using MareSynchronos.WebAPI.SignalR;
+using Microsoft.Extensions.Logging;
+using System.Net.Http.Headers;
+using System.Net.Http.Json;
+using System.Reflection;
+using System.Security.Cryptography;
+
+namespace MareSynchronos.WebAPI;
+
+public sealed class AccountRegistrationService : IDisposable
+{
+    private readonly HttpClient _httpClient;
+    private readonly ILogger<AccountRegistrationService> _logger;
+    private readonly ServerConfigurationManager _serverManager;
+    private readonly RemoteConfigurationService _remoteConfig;
+
+    private string GenerateSecretKey()
+    {
+        return Convert.ToHexString(SHA256.HashData(RandomNumberGenerator.GetBytes(64)));
+    }
+
+    public AccountRegistrationService(ILogger<AccountRegistrationService> logger, ServerConfigurationManager serverManager, RemoteConfigurationService remoteConfig)
+    {
+        _logger = logger;
+        _serverManager = serverManager;
+        _remoteConfig = remoteConfig;
+        _httpClient = new(
+            new HttpClientHandler
+            {
+                AllowAutoRedirect = true,
+                MaxAutomaticRedirections = 5
+            }
+        );
+        var ver = Assembly.GetExecutingAssembly().GetName().Version;
+        _httpClient.DefaultRequestHeaders.UserAgent.Add(new ProductInfoHeaderValue("MareSynchronos", ver!.Major + "." + ver!.Minor + "." + ver!.Build));
+    }
+
+    public void Dispose()
+    {
+        _httpClient.Dispose();
+    }
+
+    public async Task<RegisterReplyDto> RegisterAccount(CancellationToken token)
+    {
+        var authApiUrl = _serverManager.CurrentApiUrl;
+
+        // Override the API URL used for auth from remote config, if one is available
+        if (authApiUrl.Equals(ApiController.ElezenServiceUri, StringComparison.Ordinal))
+        {
+            var config = await _remoteConfig.GetConfigAsync<HubConnectionConfig>("mainServer").ConfigureAwait(false) ?? new();
+            if (!string.IsNullOrEmpty(config.ApiUrl))
+                authApiUrl = config.ApiUrl;
+            else
+                authApiUrl = ApiController.ElezenServiceApiUri;
+        }
+
+        var secretKey = GenerateSecretKey();
+        var hashedSecretKey = secretKey.GetHash256();
+
+        Uri postUri = MareAuth.AuthRegisterV2FullPath(new Uri(authApiUrl
+            .Replace("wss://", "https://", StringComparison.OrdinalIgnoreCase)
+            .Replace("ws://", "http://", StringComparison.OrdinalIgnoreCase)));
+
+        var result = await _httpClient.PostAsync(postUri, new FormUrlEncodedContent([
+            new("hashedSecretKey", hashedSecretKey)
+        ]), token).ConfigureAwait(false);
+        result.EnsureSuccessStatusCode();
+
+        var response = await result.Content.ReadFromJsonAsync<RegisterReplyV2Dto>(token).ConfigureAwait(false) ?? new();
+
+        return new RegisterReplyDto()
+        {
+            Success = response.Success,
+            ErrorMessage = response.ErrorMessage,
+            UID = response.UID,
+            SecretKey = secretKey
+        };
+    }
+}