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Example of Hangfire authorization using token from navlink #270

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Example of Hangfire authorization using token from navlink #270

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10 changes: 9 additions & 1 deletion src/Client/Shared/NavMenu.razor
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Original file line number Diff line number Diff line change
@@ -1,12 +1,13 @@
@inject Microsoft.Extensions.Localization.IStringLocalizer<NavMenu> _localizer
@using System.Security.Claims
@using BlazorHero.CleanArchitecture.Shared.Constants.Storage

<UserCard />
<MudNavMenu>
<MudNavLink Href="/" Match="NavLinkMatch.All" Icon="@Icons.Material.Outlined.Home">@_localizer["Home"]</MudNavLink>
@if (_canViewHangfire)
{
<MudNavLink Href="/jobs" Target="_blank" Icon="@Icons.Material.Outlined.Work">
<MudNavLink Href="@_jobsLink" Target="_blank" Icon="@Icons.Material.Outlined.Work">
@_localizer["Hangfire"]
</MudNavLink>
}
Expand Down Expand Up @@ -102,6 +103,10 @@
private bool _canViewProducts;
private bool _canViewBrands;

// example of authorization using token from navlink
private string _accessToken;
private string _jobsLink;

protected override async Task OnParametersSetAsync()
{
_authenticationStateProviderUser = await _stateProvider.GetAuthenticationStateProviderUserAsync();
Expand All @@ -115,5 +120,8 @@
_canViewChat = (await _authorizationService.AuthorizeAsync(_authenticationStateProviderUser, Permissions.Communication.Chat)).Succeeded;
_canViewProducts = (await _authorizationService.AuthorizeAsync(_authenticationStateProviderUser, Permissions.Products.View)).Succeeded;
_canViewBrands = (await _authorizationService.AuthorizeAsync(_authenticationStateProviderUser, Permissions.Brands.View)).Succeeded;

_accessToken = await _localStorage.GetItemAsync<string>(StorageConstants.Local.AuthToken);
_jobsLink = $"/jobs?token={_accessToken}";
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Is it safe to pass a token in a query string?

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The token is exposed in the header of any call, so is more or less the same as exposing it in the query string.

}
}
50 changes: 48 additions & 2 deletions src/Server/Filters/HangfireAuthorizationFilter.cs
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Original file line number Diff line number Diff line change
@@ -1,4 +1,9 @@
using Hangfire.Dashboard;
using System;
using System.IdentityModel.Tokens.Jwt;
using System.Linq;
using BlazorHero.CleanArchitecture.Shared.Constants.Permission;
using Hangfire.Dashboard;
using Microsoft.AspNetCore.Http;

namespace BlazorHero.CleanArchitecture.Server.Filters
{
Expand All @@ -14,7 +19,48 @@ public bool Authorize(DashboardContext context)
//return httpContext.User.Identity.IsAuthenticated;
//return httpContext.User.IsInRole(Permissions.Hangfire.View);

return true;
// example of authorization using token from navlink
var httpContext = context.GetHttpContext();

string jwtToken;
bool readFromCookie = false;

bool readFromQuery = httpContext.Request.Query.TryGetValue("token", out var jwtTokenFromQuery);

if (readFromQuery)
{
jwtToken = jwtTokenFromQuery.ToString();
}
else
{
readFromCookie = httpContext.Request.Cookies.TryGetValue("token", out jwtToken);
}

if (!readFromCookie && !readFromQuery) return false;

var handler = new JwtSecurityTokenHandler();
var token = handler.ReadJwtToken(jwtToken);
if (token is null) return false;

var expirationTime = token.ValidTo;

if (DateTime.Now > expirationTime) return false;

if (readFromQuery)
{
CookieOptions options = new CookieOptions
{
Expires = expirationTime
};
httpContext.Response.Cookies.Append("token", jwtToken, options);
}

var hangfireViewPermission =
token.Claims.Any(w => w.Value.Equals(Permissions.Hangfire.View));

return hangfireViewPermission;

// return true;
}
}
}