fix: close web access to foreign groups and sessions

src/GmRelay.Bot/GmRelay.Bot.csproj

@@ -22,7 +22,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Aspire.Npgsql" Version="13.2.1" />
+    <PackageReference Include="Aspire.Npgsql" Version="13.2.2" />
     <PackageReference Include="Dapper" Version="2.1.72" />
     <PackageReference Include="Dapper.AOT" Version="1.0.48" />
     <PackageReference Include="dbup-postgresql" Version="7.0.1" />

src/GmRelay.Web/Components/Pages/AccessDenied.razor

@@ -0,0 +1,27 @@
+@page "/access-denied"
+
+<PageTitle>Доступ запрещен — GM-Relay</PageTitle>
+
+<div class="page-container">
+    <div class="glass-card" style="max-width: 640px;">
+        <div class="empty-state">
+            <div class="empty-state-icon">⛔</div>
+            <div class="empty-state-title">Доступ запрещен</div>
+            <p class="empty-state-text">Эта группа или сессия недоступна для вашей учётной записи.</p>
+            <a href="/" class="btn-gm btn-gm-primary">← На главную</a>
+        </div>
+    </div>
+</div>
+
+@code {
+    [CascadingParameter]
+    private HttpContext? HttpContext { get; set; }
+
+    protected override void OnInitialized()
+    {
+        if (HttpContext is not null && !HttpContext.Response.HasStarted)
+        {
+            HttpContext.Response.StatusCode = StatusCodes.Status403Forbidden;
+        }
+    }
+}

src/GmRelay.Web/Components/Pages/EditSession.razor

@@ -2,8 +2,10 @@
 @using GmRelay.Web.Services
 @using GmRelay.Shared.Domain
 @using Microsoft.AspNetCore.Authorization
+@using Microsoft.AspNetCore.Components.Authorization
 @attribute [Authorize]
-@inject SessionService SessionService
+@inject AuthorizedSessionService SessionService
+@inject AuthenticationStateProvider AuthStateProvider
 @inject NavigationManager Navigation
 
 <PageTitle>Редактирование сессии — GM-Relay</PageTitle>
@@ -73,19 +75,28 @@
     [Parameter] public Guid SessionId { get; set; }
     private WebSession? session;
     private SessionEditModel model = new();
-    private bool isSubmitting = false;
+    private bool isSubmitting;
     private string? errorMessage;
 
     protected override async Task OnInitializedAsync()
     {
-        session = await SessionService.GetSessionAsync(SessionId);
-        if (session != null)
+        var authState = await AuthStateProvider.GetAuthenticationStateAsync();
+        if (!authState.User.TryGetTelegramId(out var telegramId))
         {
-            model.Title = session.Title;
-            // Convert UTC to Moscow for the picker
-            model.ScheduledAtLocal = session.ScheduledAt.ToMoscow();
-            model.JoinLink = session.JoinLink;
+            Navigation.NavigateTo("/access-denied");
+            return;
         }
+
+        session = await SessionService.GetSessionForGmAsync(SessionId, telegramId);
+        if (session is null)
+        {
+            Navigation.NavigateTo("/access-denied");
+            return;
+        }
+
+        model.Title = session.Title;
+        model.ScheduledAtLocal = session.ScheduledAt.ToMoscow();
+        model.JoinLink = session.JoinLink;
     }
 
     private async Task HandleSubmit()
@@ -95,13 +106,22 @@
 
         try
         {
-            // The value from <input type="datetime-local"> is considered as "unspecified" or local to browser.
-            // We treat it as Moscow time (UTC+3) and convert to UTC.
+            var authState = await AuthStateProvider.GetAuthenticationStateAsync();
+            if (!authState.User.TryGetTelegramId(out var telegramId))
+            {
+                Navigation.NavigateTo("/access-denied");
+                return;
+            }
+
             var utcTime = new DateTimeOffset(model.ScheduledAtLocal, TimeSpan.FromHours(3)).ToUniversalTime().UtcDateTime;
 
-            await SessionService.UpdateSessionAsync(SessionId, model.Title, utcTime, model.JoinLink);
+            await SessionService.UpdateSessionForGmAsync(SessionId, telegramId, model.Title, utcTime, model.JoinLink);
             Navigation.NavigateTo($"/group/{session!.GroupId}");
         }
+        catch (SessionAccessDeniedException)
+        {
+            Navigation.NavigateTo("/access-denied");
+        }
         catch (Exception ex)
         {
             errorMessage = "Не удалось сохранить изменения: " + ex.Message;

src/GmRelay.Web/Components/Pages/GroupDetails.razor

@@ -2,8 +2,11 @@
 @using GmRelay.Web.Services
 @using GmRelay.Shared.Domain
 @using Microsoft.AspNetCore.Authorization
+@using Microsoft.AspNetCore.Components.Authorization
 @attribute [Authorize]
-@inject SessionService SessionService
+@inject AuthorizedSessionService SessionService
+@inject AuthenticationStateProvider AuthStateProvider
+@inject NavigationManager Navigation
 
 <PageTitle>Сессии группы — GM-Relay</PageTitle>
 
@@ -112,7 +115,18 @@
 
     protected override async Task OnInitializedAsync()
     {
-        sessions = await SessionService.GetUpcomingSessionsAsync(GroupId);
+        var authState = await AuthStateProvider.GetAuthenticationStateAsync();
+        if (!authState.User.TryGetTelegramId(out var telegramId))
+        {
+            Navigation.NavigateTo("/access-denied");
+            return;
+        }
+
+        sessions = await SessionService.GetUpcomingSessionsForGmAsync(GroupId, telegramId);
+        if (sessions is null)
+        {
+            Navigation.NavigateTo("/access-denied");
+        }
     }
 
     private string GetStatusClass(string status) => status switch

src/GmRelay.Web/Components/Pages/Home.razor

@@ -3,8 +3,9 @@
 @using Microsoft.AspNetCore.Components.Authorization
 @using GmRelay.Web.Services
 @attribute [Authorize]
-@inject SessionService SessionService
+@inject AuthorizedSessionService SessionService
 @inject AuthenticationStateProvider AuthStateProvider
+@inject NavigationManager Navigation
 
 <PageTitle>Панель управления — GM-Relay</PageTitle>
 
@@ -88,10 +89,12 @@
         var user = authState.User;
         userName = user.Identity?.Name ?? "Мастер Игры";
 
-        var telegramIdClaim = user.FindFirst("TelegramId")?.Value;
-        if (long.TryParse(telegramIdClaim, out var telegramId))
+        if (!user.TryGetTelegramId(out var telegramId))
         {
-            groups = await SessionService.GetGroupsForGmAsync(telegramId);
+            Navigation.NavigateTo("/access-denied");
+            return;
         }
+
+        groups = await SessionService.GetGroupsForGmAsync(telegramId);
     }
 }

src/GmRelay.Web/Program.cs

@@ -21,7 +21,8 @@ builder.AddNpgsqlDataSource("gmrelaydb");
 
 // Add Services
 builder.Services.AddSingleton<TelegramAuthService>();
-builder.Services.AddSingleton<SessionService>();
+builder.Services.AddSingleton<ISessionStore, SessionService>();
+builder.Services.AddScoped<AuthorizedSessionService>();
 
 // Add Bot Client
 builder.Services.AddSingleton<ITelegramBotClient>(sp =>

src/GmRelay.Web/Services/AuthorizedSessionService.cs

@@ -0,0 +1,45 @@
+namespace GmRelay.Web.Services;
+
+public sealed class AuthorizedSessionService(ISessionStore sessionStore)
+{
+    public Task<List<WebGameGroup>> GetGroupsForGmAsync(long gmId) =>
+        sessionStore.GetGroupsForGmAsync(gmId);
+
+    public async Task<List<WebSession>?> GetUpcomingSessionsForGmAsync(Guid groupId, long gmId)
+    {
+        if (!await GroupBelongsToGmAsync(groupId, gmId))
+        {
+            return null;
+        }
+
+        return await sessionStore.GetUpcomingSessionsAsync(groupId);
+    }
+
+    public async Task<WebSession?> GetSessionForGmAsync(Guid sessionId, long gmId)
+    {
+        var session = await sessionStore.GetSessionAsync(sessionId);
+        if (session is null)
+        {
+            return null;
+        }
+
+        return await GroupBelongsToGmAsync(session.GroupId, gmId) ? session : null;
+    }
+
+    public async Task UpdateSessionForGmAsync(Guid sessionId, long gmId, string title, DateTime scheduledAt, string joinLink)
+    {
+        var session = await GetSessionForGmAsync(sessionId, gmId);
+        if (session is null)
+        {
+            throw new SessionAccessDeniedException(sessionId, gmId);
+        }
+
+        await sessionStore.UpdateSessionAsync(sessionId, session.GroupId, title, scheduledAt, joinLink);
+    }
+
+    private async Task<bool> GroupBelongsToGmAsync(Guid groupId, long gmId)
+    {
+        var group = await sessionStore.GetGroupAsync(groupId);
+        return group?.GmTelegramId == gmId;
+    }
+}

src/GmRelay.Web/Services/ClaimsPrincipalExtensions.cs

@@ -0,0 +1,9 @@
+using System.Security.Claims;
+
+namespace GmRelay.Web.Services;
+
+public static class ClaimsPrincipalExtensions
+{
+    public static bool TryGetTelegramId(this ClaimsPrincipal user, out long telegramId) =>
+        long.TryParse(user.FindFirst("TelegramId")?.Value, out telegramId);
+}

src/GmRelay.Web/Services/ISessionStore.cs

@@ -0,0 +1,10 @@
+namespace GmRelay.Web.Services;
+
+public interface ISessionStore
+{
+    Task<List<WebGameGroup>> GetGroupsForGmAsync(long gmId);
+    Task<WebGameGroup?> GetGroupAsync(Guid groupId);
+    Task<List<WebSession>> GetUpcomingSessionsAsync(Guid groupId);
+    Task<WebSession?> GetSessionAsync(Guid sessionId);
+    Task UpdateSessionAsync(Guid sessionId, Guid groupId, string title, DateTime scheduledAt, string joinLink);
+}

src/GmRelay.Web/Services/SessionAccessDeniedException.cs

@@ -0,0 +1,4 @@
+namespace GmRelay.Web.Services;
+
+public sealed class SessionAccessDeniedException(Guid sessionId, long gmId)
+    : InvalidOperationException($"Session '{sessionId}' is not accessible for GM '{gmId}'.");

src/GmRelay.Web/Services/SessionService.cs

@@ -12,7 +12,7 @@ public sealed record WebSession(Guid Id, Guid GroupId, string Title, DateTime Sc
 public sealed class SessionService(
     NpgsqlDataSource dataSource,
     ITelegramBotClient bot,
-    ILogger<SessionService> logger)
+    ILogger<SessionService> logger) : ISessionStore
 {
     public async Task<List<WebGameGroup>> GetGroupsForGmAsync(long gmId)
     {
@@ -22,6 +22,14 @@ public sealed class SessionService(
             new { GmId = gmId })).ToList();
     }
 
+    public async Task<WebGameGroup?> GetGroupAsync(Guid groupId)
+    {
+        await using var conn = await dataSource.OpenConnectionAsync();
+        return await conn.QuerySingleOrDefaultAsync<WebGameGroup>(
+            "SELECT id, telegram_chat_id AS TelegramChatId, name, gm_telegram_id AS GmTelegramId FROM game_groups WHERE id = @GroupId",
+            new { GroupId = groupId });
+    }
+
     public async Task<List<WebSession>> GetUpcomingSessionsAsync(Guid groupId)
     {
         await using var conn = await dataSource.OpenConnectionAsync();
@@ -49,29 +57,41 @@ public sealed class SessionService(
             new { SessionId = sessionId });
     }
 
-    public async Task UpdateSessionAsync(Guid sessionId, string title, DateTime scheduledAt, string joinLink)
+    public async Task UpdateSessionAsync(Guid sessionId, Guid groupId, string title, DateTime scheduledAt, string joinLink)
     {
         await using var conn = await dataSource.OpenConnectionAsync();
         await using var transaction = await conn.BeginTransactionAsync();
 
-        // 1. Fetch current session with all required columns for WebSession record
-        var oldSession = await conn.QuerySingleAsync<WebSession>(
+        var oldSession = await conn.QuerySingleOrDefaultAsync<WebSession>(
             @"SELECT s.id, s.group_id AS GroupId, s.title, s.scheduled_at AS ScheduledAt, s.status, s.join_link AS JoinLink,
                      s.batch_id AS BatchId, s.batch_message_id AS BatchMessageId,
                      g.telegram_chat_id AS TelegramChatId
               FROM sessions s
               JOIN game_groups g ON g.id = s.group_id
-              WHERE s.id = @Id",
-            new { Id = sessionId }, transaction);
-
-        // 2. Update Session
-        await conn.ExecuteAsync(
-            @"UPDATE sessions SET title = @Title, scheduled_at = @ScheduledAt, join_link = @JoinLink, updated_at = now()
-              WHERE id = @Id",
-            new { Id = sessionId, Title = title, ScheduledAt = scheduledAt, JoinLink = joinLink },
+              WHERE s.id = @Id AND s.group_id = @GroupId",
+            new { Id = sessionId, GroupId = groupId },
             transaction);
 
-        // 3. Update all sessions in the same batch with new title (optional, usually batch shares title)
+        if (oldSession is null)
+        {
+            throw new SessionAccessDeniedException(sessionId, 0);
+        }
+
+        var updatedRows = await conn.ExecuteAsync(
+            @"UPDATE sessions
+              SET title = @Title,
+                  scheduled_at = @ScheduledAt,
+                  join_link = @JoinLink,
+                  updated_at = now()
+              WHERE id = @Id AND group_id = @GroupId",
+            new { Id = sessionId, GroupId = groupId, Title = title, ScheduledAt = scheduledAt, JoinLink = joinLink },
+            transaction);
+
+        if (updatedRows == 0)
+        {
+            throw new SessionAccessDeniedException(sessionId, 0);
+        }
+
         await conn.ExecuteAsync(
             "UPDATE sessions SET title = @Title WHERE batch_id = @BatchId",
             new { Title = title, BatchId = oldSession.BatchId },
@@ -79,7 +99,6 @@ public sealed class SessionService(
 
         await transaction.CommitAsync();
 
-        // 4. Send Telegram Notification
         var timeChanged = oldSession.ScheduledAt != scheduledAt;
         var notification = $"🔄 <b>Мастер обновил игру!</b>\n\n" +
                            $"📌 <b>{System.Net.WebUtility.HtmlEncode(title)}</b>\n" +
@@ -87,7 +106,6 @@ public sealed class SessionService(
 
         await bot.SendMessage(oldSession.TelegramChatId, notification, parseMode: Telegram.Bot.Types.Enums.ParseMode.Html);
 
-        // 5. Update Original Batch Message
         if (oldSession.BatchMessageId.HasValue)
         {
             await TryUpdateBatchMessageAsync(oldSession.BatchId, oldSession.TelegramChatId, oldSession.BatchMessageId.Value, title);
@@ -124,7 +142,6 @@ public sealed class SessionService(
         }
         catch (Exception ex)
         {
-            // Log but don't throw — message may be too old or have same content
             logger.LogWarning(ex, "Failed to update batch message {MessageId} in chat {ChatId}", messageId, chatId);
         }
     }

tests/GmRelay.Bot.Tests/GmRelay.Bot.Tests.csproj

@@ -20,6 +20,7 @@
 
   <ItemGroup>
     <ProjectReference Include="..\..\src\GmRelay.Bot\GmRelay.Bot.csproj" />
+    <ProjectReference Include="..\..\src\GmRelay.Web\GmRelay.Web.csproj" />
   </ItemGroup>
 
 </Project>

tests/GmRelay.Bot.Tests/UnitTest1.cs

@@ -1,10 +0,0 @@
-namespace GmRelay.Bot.Tests;
-
-public class UnitTest1
-{
-    [Fact]
-    public void Test1()
-    {
-
-    }
-}

tests/GmRelay.Bot.Tests/Web/AuthorizedSessionServiceTests.cs

@@ -0,0 +1,162 @@
+using GmRelay.Web.Services;
+
+namespace GmRelay.Bot.Tests.Web;
+
+public sealed class AuthorizedSessionServiceTests
+{
+    [Fact]
+    public async Task GetUpcomingSessionsForGmAsync_ReturnsSessions_WhenGroupBelongsToGm()
+    {
+        var gmId = 1001L;
+        var groupId = Guid.NewGuid();
+        var store = new FakeSessionStore(
+            groups:
+            [
+                new(groupId, 42, "Alpha", gmId)
+            ],
+            sessions:
+            [
+                new(Guid.NewGuid(), groupId, "Session A", DateTime.UtcNow, "Planned", "https://example.test/a", Guid.NewGuid(), 10, 42)
+            ]);
+        var service = new AuthorizedSessionService(store);
+
+        var sessions = await service.GetUpcomingSessionsForGmAsync(groupId, gmId);
+
+        Assert.NotNull(sessions);
+        Assert.Single(sessions);
+        Assert.Equal("Session A", sessions[0].Title);
+    }
+
+    [Fact]
+    public async Task GetUpcomingSessionsForGmAsync_ReturnsNull_WhenGroupBelongsToAnotherGm()
+    {
+        var groupId = Guid.NewGuid();
+        var store = new FakeSessionStore(
+            groups:
+            [
+                new(groupId, 42, "Alpha", 2002L)
+            ]);
+        var service = new AuthorizedSessionService(store);
+
+        var sessions = await service.GetUpcomingSessionsForGmAsync(groupId, 1001L);
+
+        Assert.Null(sessions);
+    }
+
+    [Fact]
+    public async Task GetSessionForGmAsync_ReturnsSession_WhenSessionBelongsToOwnedGroup()
+    {
+        var gmId = 1001L;
+        var groupId = Guid.NewGuid();
+        var sessionId = Guid.NewGuid();
+        var store = new FakeSessionStore(
+            groups:
+            [
+                new(groupId, 42, "Alpha", gmId)
+            ],
+            sessions:
+            [
+                new(sessionId, groupId, "Session A", DateTime.UtcNow, "Planned", "https://example.test/a", Guid.NewGuid(), 10, 42)
+            ]);
+        var service = new AuthorizedSessionService(store);
+
+        var session = await service.GetSessionForGmAsync(sessionId, gmId);
+
+        Assert.NotNull(session);
+        Assert.Equal(sessionId, session.Id);
+    }
+
+    [Fact]
+    public async Task UpdateSessionForGmAsync_Throws_WhenSessionBelongsToAnotherGm()
+    {
+        var groupId = Guid.NewGuid();
+        var sessionId = Guid.NewGuid();
+        var store = new FakeSessionStore(
+            groups:
+            [
+                new(groupId, 42, "Alpha", 2002L)
+            ],
+            sessions:
+            [
+                new(sessionId, groupId, "Session A", DateTime.UtcNow, "Planned", "https://example.test/a", Guid.NewGuid(), 10, 42)
+            ]);
+        var service = new AuthorizedSessionService(store);
+
+        var action = () => service.UpdateSessionForGmAsync(sessionId, 1001L, "Updated", DateTime.UtcNow.AddDays(1), "https://example.test/b");
+
+        await Assert.ThrowsAsync<SessionAccessDeniedException>(action);
+        Assert.False(store.UpdateCalled);
+    }
+
+    [Fact]
+    public async Task UpdateSessionForGmAsync_UpdatesOwnedSession()
+    {
+        var gmId = 1001L;
+        var groupId = Guid.NewGuid();
+        var sessionId = Guid.NewGuid();
+        var scheduledAt = DateTime.UtcNow.AddDays(1);
+        var store = new FakeSessionStore(
+            groups:
+            [
+                new(groupId, 42, "Alpha", gmId)
+            ],
+            sessions:
+            [
+                new(sessionId, groupId, "Session A", DateTime.UtcNow, "Planned", "https://example.test/a", Guid.NewGuid(), 10, 42)
+            ]);
+        var service = new AuthorizedSessionService(store);
+
+        await service.UpdateSessionForGmAsync(sessionId, gmId, "Updated", scheduledAt, "https://example.test/b");
+
+        Assert.True(store.UpdateCalled);
+        Assert.Equal(groupId, store.LastUpdatedGroupId);
+        Assert.Equal(sessionId, store.LastUpdatedSessionId);
+        Assert.Equal("Updated", store.LastUpdatedTitle);
+        Assert.Equal(scheduledAt, store.LastUpdatedScheduledAt);
+        Assert.Equal("https://example.test/b", store.LastUpdatedJoinLink);
+    }
+
+    private sealed class FakeSessionStore(
+        IEnumerable<WebGameGroup>? groups = null,
+        IEnumerable<WebSession>? sessions = null) : ISessionStore
+    {
+        private readonly Dictionary<Guid, WebGameGroup> groupsById = groups?.ToDictionary(group => group.Id) ?? [];
+        private readonly Dictionary<Guid, WebSession> sessionsById = sessions?.ToDictionary(session => session.Id) ?? [];
+
+        public bool UpdateCalled { get; private set; }
+        public Guid? LastUpdatedSessionId { get; private set; }
+        public Guid? LastUpdatedGroupId { get; private set; }
+        public string? LastUpdatedTitle { get; private set; }
+        public DateTime? LastUpdatedScheduledAt { get; private set; }
+        public string? LastUpdatedJoinLink { get; private set; }
+
+        public Task<List<WebGameGroup>> GetGroupsForGmAsync(long gmId) =>
+            Task.FromResult(groupsById.Values.Where(group => group.GmTelegramId == gmId).ToList());
+
+        public Task<WebGameGroup?> GetGroupAsync(Guid groupId)
+        {
+            groupsById.TryGetValue(groupId, out var group);
+            return Task.FromResult(group);
+        }
+
+        public Task<List<WebSession>> GetUpcomingSessionsAsync(Guid groupId) =>
+            Task.FromResult(sessionsById.Values.Where(session => session.GroupId == groupId).ToList());
+
+        public Task<WebSession?> GetSessionAsync(Guid sessionId)
+        {
+            sessionsById.TryGetValue(sessionId, out var session);
+            return Task.FromResult(session);
+        }
+
+        public Task UpdateSessionAsync(Guid sessionId, Guid groupId, string title, DateTime scheduledAt, string joinLink)
+        {
+            UpdateCalled = true;
+            LastUpdatedSessionId = sessionId;
+            LastUpdatedGroupId = groupId;
+            LastUpdatedTitle = title;
+            LastUpdatedScheduledAt = scheduledAt;
+            LastUpdatedJoinLink = joinLink;
+            return Task.CompletedTask;
+        }
+    }
+}