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65 changes: 65 additions & 0 deletions
65
src/Sitko.Core.Blazor.Server/BaseRevalidatingServerAuthenticationStateProvider.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| using System.Diagnostics; | ||
| using System.Security.Claims; | ||
| using Microsoft.AspNetCore.Components; | ||
| using Microsoft.AspNetCore.Components.Authorization; | ||
| using Microsoft.AspNetCore.Components.Server; | ||
| using Microsoft.AspNetCore.Components.Web; | ||
| using Microsoft.Extensions.Logging; | ||
|
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| namespace Sitko.Core.Blazor.Server; | ||
|
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| public abstract class | ||
| BaseRevalidatingServerAuthenticationStateProvider<TUserInfo> : RevalidatingServerAuthenticationStateProvider | ||
| { | ||
| private readonly PersistentComponentState state; | ||
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| private readonly PersistingComponentStateSubscription subscription; | ||
|
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| private Task<AuthenticationState>? authenticationStateTask; | ||
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| protected BaseRevalidatingServerAuthenticationStateProvider(ILoggerFactory loggerFactory, | ||
| PersistentComponentState persistentComponentState) : base(loggerFactory) | ||
| { | ||
| state = persistentComponentState; | ||
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| AuthenticationStateChanged += OnAuthenticationStateChanged; | ||
| subscription = state.RegisterOnPersisting(OnPersistingAsync, RenderMode.InteractiveWebAssembly); | ||
| } | ||
|
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| protected override TimeSpan RevalidationInterval => TimeSpan.FromMinutes(30); | ||
|
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| protected override Task<bool> ValidateAuthenticationStateAsync( | ||
| AuthenticationState authenticationState, CancellationToken cancellationToken) => | ||
| Task.FromResult(true); | ||
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| private void OnAuthenticationStateChanged(Task<AuthenticationState> task) => authenticationStateTask = task; | ||
|
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| private async Task OnPersistingAsync() | ||
| { | ||
| if (authenticationStateTask is null) | ||
| { | ||
| throw new UnreachableException($"Authentication state not set in {nameof(OnPersistingAsync)}()."); | ||
| } | ||
|
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| var authenticationState = await authenticationStateTask; | ||
| var principal = authenticationState.User; | ||
|
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| if (principal.Identity?.IsAuthenticated == true) | ||
| { | ||
| var userInfo = GetUserInfo(principal); | ||
| if (userInfo is not null) | ||
| { | ||
| state.PersistAsJson(typeof(TUserInfo).FullName!, userInfo); | ||
| } | ||
| } | ||
| } | ||
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| protected abstract TUserInfo? GetUserInfo(ClaimsPrincipal principal); | ||
|
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| protected override void Dispose(bool disposing) | ||
| { | ||
| subscription.Dispose(); | ||
| AuthenticationStateChanged -= OnAuthenticationStateChanged; | ||
| base.Dispose(disposing); | ||
| } | ||
| } |
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33 changes: 33 additions & 0 deletions
33
src/Sitko.Core.Blazor.Wasm/BasePersistentAuthenticationStateProvider.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| using System.Security.Claims; | ||
| using Microsoft.AspNetCore.Components; | ||
| using Microsoft.AspNetCore.Components.Authorization; | ||
|
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| namespace Sitko.Core.Blazor.Wasm; | ||
|
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| public abstract class BasePersistentAuthenticationStateProvider<TUser>: AuthenticationStateProvider | ||
| { | ||
| // ReSharper disable once StaticMemberInGenericType | ||
| private static readonly Task<AuthenticationState> DefaultUnauthenticatedTask = | ||
| Task.FromResult(new AuthenticationState(new ClaimsPrincipal(new ClaimsIdentity()))); | ||
|
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| private readonly Task<AuthenticationState> authenticationStateTask = DefaultUnauthenticatedTask; | ||
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| protected BasePersistentAuthenticationStateProvider(PersistentComponentState state) | ||
| { | ||
| if (!state.TryTakeFromJson<TUser>(nameof(TUser), out var userInfo) || userInfo is null) | ||
| { | ||
| return; | ||
| } | ||
|
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| // ReSharper disable once VirtualMemberCallInConstructor | ||
| var claims = GetClaims(userInfo); | ||
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| authenticationStateTask = Task.FromResult( | ||
| new AuthenticationState(new ClaimsPrincipal(new ClaimsIdentity(claims, | ||
| authenticationType: nameof(BasePersistentAuthenticationStateProvider<TUser>))))); | ||
| } | ||
|
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| protected abstract Claim[] GetClaims(TUser user); | ||
|
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| public override Task<AuthenticationState> GetAuthenticationStateAsync() => authenticationStateTask; | ||
| } |
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