Foxnouns.NET/Foxnouns.Backend/Controllers/Authentication/AuthController.cs

155 lines
5.8 KiB
C#

// Copyright (C) 2023-present sam/u1f320 (vulpine.solutions)
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
using System.Net;
using System.Web;
using Foxnouns.Backend.Database;
using Foxnouns.Backend.Database.Models;
using Foxnouns.Backend.Dto;
using Foxnouns.Backend.Extensions;
using Foxnouns.Backend.Middleware;
using Foxnouns.Backend.Services;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
namespace Foxnouns.Backend.Controllers.Authentication;
[Route("/api/internal/auth")]
[ApiExplorerSettings(IgnoreApi = true)]
public class AuthController(
Config config,
DatabaseContext db,
KeyCacheService keyCacheService,
ILogger logger
) : ApiControllerBase
{
private readonly ILogger _logger = logger.ForContext<AuthController>();
[HttpPost("urls")]
[ProducesResponseType<UrlsResponse>(StatusCodes.Status200OK)]
public async Task<IActionResult> UrlsAsync(CancellationToken ct = default)
{
_logger.Debug(
"Generating auth URLs for Discord: {Discord}, Google: {Google}, Tumblr: {Tumblr}",
config.DiscordAuth.Enabled,
config.GoogleAuth.Enabled,
config.TumblrAuth.Enabled
);
string state = HttpUtility.UrlEncode(await keyCacheService.GenerateAuthStateAsync(ct));
string? discord = null;
string? google = null;
string? tumblr = null;
if (config.DiscordAuth is { ClientId: not null, ClientSecret: not null })
{
discord =
"https://discord.com/oauth2/authorize?response_type=code"
+ $"&client_id={config.DiscordAuth.ClientId}&scope=identify"
+ $"&prompt=none&state={state}"
+ $"&redirect_uri={HttpUtility.UrlEncode($"{config.BaseUrl}/auth/callback/discord")}";
}
if (config.GoogleAuth is { ClientId: not null, ClientSecret: not null })
{
google =
"https://accounts.google.com/o/oauth2/auth?response_type=code"
+ $"&client_id={config.GoogleAuth.ClientId}"
+ $"&scope=openid+{HttpUtility.UrlEncode("https://www.googleapis.com/auth/userinfo.email")}"
+ $"&prompt=select_account&state={state}"
+ $"&redirect_uri={HttpUtility.UrlEncode($"{config.BaseUrl}/auth/callback/google")}";
}
if (config.TumblrAuth is { ClientId: not null, ClientSecret: not null })
{
tumblr =
"https://www.tumblr.com/oauth2/authorize?response_type=code"
+ $"&client_id={config.TumblrAuth.ClientId}"
+ $"&scope=basic&state={state}"
+ $"&redirect_uri={HttpUtility.UrlEncode($"{config.BaseUrl}/auth/callback/tumblr")}";
}
return Ok(new UrlsResponse(config.EmailAuth.Enabled, discord, google, tumblr));
}
[HttpPost("force-log-out")]
[Authorize("identify")]
public async Task<IActionResult> ForceLogoutAsync()
{
_logger.Information("Invalidating all tokens for user {UserId}", CurrentUser!.Id);
await db
.Tokens.Where(t => t.UserId == CurrentUser.Id)
.ExecuteUpdateAsync(s => s.SetProperty(t => t.ManuallyExpired, true));
return NoContent();
}
[HttpGet("methods/{id}")]
[Authorize("*")]
[ProducesResponseType<AuthMethodResponse>(statusCode: StatusCodes.Status200OK)]
public async Task<IActionResult> GetAuthMethodAsync(Snowflake id)
{
AuthMethod? authMethod = await db
.AuthMethods.Include(a => a.FediverseApplication)
.FirstOrDefaultAsync(a => a.UserId == CurrentUser!.Id && a.Id == id);
if (authMethod == null)
throw new ApiError.NotFound("No authentication method with that ID found.");
return Ok(UserRendererService.RenderAuthMethod(authMethod));
}
[HttpDelete("methods/{id}")]
[Authorize("*")]
public async Task<IActionResult> DeleteAuthMethodAsync(Snowflake id)
{
List<AuthMethod> authMethods = await db
.AuthMethods.Where(a => a.UserId == CurrentUser!.Id)
.ToListAsync();
if (authMethods.Count < 2)
{
throw new ApiError(
"You cannot remove your last authentication method.",
HttpStatusCode.BadRequest,
ErrorCode.LastAuthMethod
);
}
AuthMethod? authMethod = authMethods.FirstOrDefault(a => a.Id == id);
if (authMethod == null)
throw new ApiError.NotFound("No authentication method with that ID found.");
_logger.Debug(
"Deleting auth method {AuthMethodId} for user {UserId}",
authMethod.Id,
CurrentUser!.Id
);
// If this is the user's last email, we should also clear the user's password.
if (
authMethod.AuthType == AuthType.Email
&& authMethods.Count(a => a.AuthType == AuthType.Email) == 1
)
{
_logger.Debug(
"Deleted last email address for user {UserId}, resetting their password",
CurrentUser.Id
);
CurrentUser.Password = null;
db.Update(CurrentUser);
}
db.Remove(authMethod);
await db.SaveChangesAsync();
return NoContent();
}
}