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ExternalLogins.cshtml.cs
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ExternalLogins.cshtml.cs
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// 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;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
namespace Microsoft.AspNetCore.Identity.UI.V5.Pages.Account.Manage.Internal
{
/// <summary>
/// This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
/// directly from your code. This API may change or be removed in future releases.
/// </summary>
[IdentityDefaultUI(typeof(ExternalLoginsModel<>))]
public abstract class ExternalLoginsModel : PageModel
{
/// <summary>
/// This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
/// directly from your code. This API may change or be removed in future releases.
/// </summary>
public IList<UserLoginInfo> CurrentLogins { get; set; }
/// <summary>
/// This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
/// directly from your code. This API may change or be removed in future releases.
/// </summary>
public IList<AuthenticationScheme> OtherLogins { get; set; }
/// <summary>
/// This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
/// directly from your code. This API may change or be removed in future releases.
/// </summary>
public bool ShowRemoveButton { get; set; }
/// <summary>
/// This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
/// directly from your code. This API may change or be removed in future releases.
/// </summary>
[TempData]
public string StatusMessage { get; set; }
/// <summary>
/// This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
/// directly from your code. This API may change or be removed in future releases.
/// </summary>
public virtual Task<IActionResult> OnGetAsync() => throw new NotImplementedException();
/// <summary>
/// This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
/// directly from your code. This API may change or be removed in future releases.
/// </summary>
public virtual Task<IActionResult> OnPostRemoveLoginAsync(string loginProvider, string providerKey) => throw new NotImplementedException();
/// <summary>
/// This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
/// directly from your code. This API may change or be removed in future releases.
/// </summary>
public virtual Task<IActionResult> OnPostLinkLoginAsync(string provider) => throw new NotImplementedException();
/// <summary>
/// This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
/// directly from your code. This API may change or be removed in future releases.
/// </summary>
public virtual Task<IActionResult> OnGetLinkLoginCallbackAsync() => throw new NotImplementedException();
}
internal class ExternalLoginsModel<TUser> : ExternalLoginsModel where TUser : class
{
private readonly UserManager<TUser> _userManager;
private readonly SignInManager<TUser> _signInManager;
private readonly IUserStore<TUser> _userStore;
public ExternalLoginsModel(
UserManager<TUser> userManager,
SignInManager<TUser> signInManager,
IUserStore<TUser> userStore)
{
_userManager = userManager;
_signInManager = signInManager;
_userStore = userStore;
}
public override async Task<IActionResult> OnGetAsync()
{
var user = await _userManager.GetUserAsync(User);
if (user == null)
{
return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
}
CurrentLogins = await _userManager.GetLoginsAsync(user);
OtherLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync())
.Where(auth => CurrentLogins.All(ul => auth.Name != ul.LoginProvider))
.ToList();
string passwordHash = null;
if (_userStore is IUserPasswordStore<TUser> userPasswordStore)
{
passwordHash = await userPasswordStore.GetPasswordHashAsync(user, HttpContext.RequestAborted);
}
ShowRemoveButton = passwordHash != null || CurrentLogins.Count > 1;
return Page();
}
public override async Task<IActionResult> OnPostRemoveLoginAsync(string loginProvider, string providerKey)
{
var user = await _userManager.GetUserAsync(User);
if (user == null)
{
return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
}
var result = await _userManager.RemoveLoginAsync(user, loginProvider, providerKey);
if (!result.Succeeded)
{
StatusMessage = "The external login was not removed.";
return RedirectToPage();
}
await _signInManager.RefreshSignInAsync(user);
StatusMessage = "The external login was removed.";
return RedirectToPage();
}
public override 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 override async Task<IActionResult> OnGetLinkLoginCallbackAsync()
{
var user = await _userManager.GetUserAsync(User);
if (user == null)
{
return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
}
var userId = await _userManager.GetUserIdAsync(user);
var info = await _signInManager.GetExternalLoginInfoAsync(userId);
if (info == null)
{
throw new InvalidOperationException($"Unexpected error occurred loading external login info.");
}
var result = await _userManager.AddLoginAsync(user, info);
if (!result.Succeeded)
{
StatusMessage = "The external login was not added. External logins can only be associated with one account.";
return RedirectToPage();
}
// Clear the existing external cookie to ensure a clean login process
await HttpContext.SignOutAsync(IdentityConstants.ExternalScheme);
StatusMessage = "The external login was added.";
return RedirectToPage();
}
}
}