38 lines
2.0 KiB
C#
38 lines
2.0 KiB
C#
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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/// TokenProvider that generates tokens from the user's security stamp and notifies a user via email.
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/// </summary>
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/// <typeparam name="TUser">The type used to represent a user.</typeparam>
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public class EmailTokenProvider<TUser> : TotpSecurityStampBasedTokenProvider<TUser>
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where TUser : class
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{
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/// <summary>
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/// Checks if a two factor authentication token can be generated for the specified <paramref name="user"/>.
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/// </summary>
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/// <param name="manager">The <see cref="UserManager{TUser}"/> to retrieve the <paramref name="user"/> from.</param>
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/// <param name="user">The <see cref="TUser"/> to check for the possibility of generating a two factor authentication token.</param>
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/// <returns>True if the user has an email address set, otherwise false.</returns>
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public override async Task<bool> CanGenerateTwoFactorTokenAsync(UserManager<TUser> manager, TUser user)
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{
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var email = await manager.GetEmailAsync(user);
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return !string.IsNullOrWhiteSpace(email) && await manager.IsEmailConfirmedAsync(user);
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}
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/// <summary>
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/// Returns the a value for the user used as entropy in the generated token.
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/// </summary>
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/// <param name="purpose">The purpose of the two factor authentication token.</param>
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/// <param name="manager">The <see cref="UserManager{TUser}"/> to retrieve the <paramref name="user"/> from.</param>
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/// <param name="user">The <see cref="TUser"/> to check for the possibility of generating a two factor authentication token.</param>
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/// <returns>A string suitable for use as entropy in token generation.</returns>
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public override async Task<string> GetUserModifierAsync(string purpose, UserManager<TUser> manager,
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TUser user)
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{
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var email = await manager.GetEmailAsync(user);
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return "Email:" + purpose + ":" + email;
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}
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}
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} |