114 lines
4.5 KiB
C#
114 lines
4.5 KiB
C#
// Copyright (c) .NET Foundation. All rights reserved.
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// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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using System;
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using System.Collections.Generic;
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using System.Linq;
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#if NET451
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using System.Net.Mail;
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#endif
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using System.Text.RegularExpressions;
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using System.Threading;
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using System.Threading.Tasks;
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namespace Microsoft.AspNet.Identity
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{
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/// <summary>
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/// Provides validation services for user classes.
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/// </summary>
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/// <typeparam name="TRole">The type encapsulating a user.</typeparam>
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public class UserValidator<TUser> : IUserValidator<TUser> where TUser : class
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{
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/// <summary>
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/// Creates a new instance of <see cref="UserValidator{TUser}"/>/
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/// </summary>
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/// <param name="errors">The <see cref="IdentityErrorDescriber"/> used to provider error messages.</param>
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public UserValidator(IdentityErrorDescriber errors = null)
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{
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Describer = errors ?? new IdentityErrorDescriber();
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}
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/// <summary>
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/// Gets the <see cref="IdentityErrorDescriber"/> used to provider error messages for the current <see cref="UserValidator{TUser}"/>.
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/// </summary>
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/// <value>Yhe <see cref="IdentityErrorDescriber"/> used to provider error messages for the current <see cref="UserValidator{TUser}"/>.</value>
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public IdentityErrorDescriber Describer { get; private set; }
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/// <summary>
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/// Validates the specified <paramref name="user"/> as an asynchronous operation.
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/// </summary>
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/// <param name="manager">The <see cref="UserManager{TUser}"/> that can be used to retrieve user properties.</param>
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/// <param name="user">The user to validate.</param>
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/// <returns>The <see cref="Task"/> that represents the asynchronous operation, containing the <see cref="IdentityResult"/> of the validation operation.</returns>
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public virtual async Task<IdentityResult> ValidateAsync(UserManager<TUser> manager, TUser user)
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{
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if (manager == null)
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{
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throw new ArgumentNullException(nameof(manager));
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}
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if (user == null)
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{
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throw new ArgumentNullException(nameof(user));
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}
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var errors = new List<IdentityError>();
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await ValidateUserName(manager, user, errors);
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if (manager.Options.User.RequireUniqueEmail)
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{
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await ValidateEmail(manager, user, errors);
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}
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return errors.Count > 0 ? IdentityResult.Failed(errors.ToArray()) : IdentityResult.Success;
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}
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private async Task ValidateUserName(UserManager<TUser> manager, TUser user, ICollection<IdentityError> errors)
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{
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var userName = await manager.GetUserNameAsync(user);
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if (string.IsNullOrWhiteSpace(userName))
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{
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errors.Add(Describer.InvalidUserName(userName));
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}
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else if (!string.IsNullOrEmpty(manager.Options.User.AllowedUserNameCharacters) &&
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userName.Any(c => !manager.Options.User.AllowedUserNameCharacters.Contains(c)))
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{
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errors.Add(Describer.InvalidUserName(userName));
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}
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else
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{
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var owner = await manager.FindByNameAsync(userName);
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if (owner != null &&
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!string.Equals(await manager.GetUserIdAsync(owner), await manager.GetUserIdAsync(user)))
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{
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errors.Add(Describer.DuplicateUserName(userName));
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}
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}
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}
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// make sure email is not empty, valid, and unique
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private async Task ValidateEmail(UserManager<TUser> manager, TUser user, List<IdentityError> errors)
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{
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var email = await manager.GetEmailAsync(user);
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if (string.IsNullOrWhiteSpace(email))
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{
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errors.Add(Describer.InvalidEmail(email));
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return;
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}
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#if NET451
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try
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{
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var m = new MailAddress(email);
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}
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catch (FormatException)
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{
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errors.Add(Describer.InvalidEmail(email));
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return;
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}
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#endif
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var owner = await manager.FindByEmailAsync(email);
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if (owner != null &&
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!string.Equals(await manager.GetUserIdAsync(owner), await manager.GetUserIdAsync(user)))
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{
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errors.Add(Describer.DuplicateEmail(email));
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}
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}
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}
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}
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