|
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Identity.ExternalClaims.Data;
using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
namespace Identity.ExternalClaims.Pages.Account.Manage;
public class ExternalLoginsModel : PageModel
{
private readonly UserManager<ApplicationUser> _userManager;
private readonly SignInManager<ApplicationUser> _signInManager;
public ExternalLoginsModel(
UserManager<ApplicationUser> userManager,
SignInManager<ApplicationUser> signInManager)
{
_userManager = userManager;
_signInManager = signInManager;
}
public IList<UserLoginInfo> CurrentLogins { get; set; }
public IList<AuthenticationScheme> OtherLogins { get; set; }
public bool ShowRemoveButton { get; set; }
[TempData]
public string StatusMessage { get; set; }
public async Task<IActionResult> OnGetAsync()
{
var user = await _userManager.GetUserAsync(User);
if (user == null)
{
throw new ApplicationException($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
}
CurrentLogins = await _userManager.GetLoginsAsync(user);
OtherLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync())
.Where(auth => CurrentLogins.All(ul => auth.Name != ul.LoginProvider))
.ToList();
ShowRemoveButton = user.PasswordHash != null || CurrentLogins.Count > 1;
return Page();
}
public async Task<IActionResult> OnPostRemoveLoginAsync(string loginProvider, string providerKey)
{
var user = await _userManager.GetUserAsync(User);
if (user == null)
{
throw new ApplicationException($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
}
var result = await _userManager.RemoveLoginAsync(user, loginProvider, providerKey);
if (!result.Succeeded)
{
throw new ApplicationException($"Unexpected error occurred removing external login for user with ID '{user.Id}'.");
}
await _signInManager.SignInAsync(user, isPersistent: false);
StatusMessage = "The external login was removed.";
return RedirectToPage();
}
public async Task<IActionResult> OnPostLinkLoginAsync(string provider)
{
// Clear the existing external cookie to ensure a clean login process
await HttpContext.SignOutAsync(IdentityConstants.ExternalScheme);
// Request a redirect to the external login provider to link a login for the current user
var redirectUrl = Url.Page("./ExternalLogins", pageHandler: "LinkLoginCallback");
var properties = _signInManager.ConfigureExternalAuthenticationProperties(provider, redirectUrl, _userManager.GetUserId(User));
return new ChallengeResult(provider, properties);
}
public async Task<IActionResult> OnGetLinkLoginCallbackAsync()
{
var user = await _userManager.GetUserAsync(User);
if (user == null)
{
throw new ApplicationException($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
}
var info = await _signInManager.GetExternalLoginInfoAsync(await _userManager.GetUserIdAsync(user));
if (info == null)
{
throw new ApplicationException($"Unexpected error occurred loading external login info for user with ID '{user.Id}'.");
}
var result = await _userManager.AddLoginAsync(user, info);
if (!result.Succeeded)
{
throw new ApplicationException($"Unexpected error occurred adding external login for user with ID '{user.Id}'.");
}
// Clear the existing external cookie to ensure a clean login process
await HttpContext.SignOutAsync(IdentityConstants.ExternalScheme);
StatusMessage = "The external login was added.";
return RedirectToPage();
}
}
|