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using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using MediaBrowser.Common.Extensions;
using MediaBrowser.Controller.Authentication;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Library;
using MediaBrowser.Model.Serialization;
using MediaBrowser.Model.Users;
using Microsoft.Win32.SafeHandles;
namespace Emby.Server.Implementations.Library
{
public class DefaultPasswordResetProvider : IPasswordResetProvider
{
public string Name => "Default Password Reset Provider";
public bool IsEnabled => true;
private readonly string _passwordResetFileBase;
private readonly string _passwordResetFileBaseDir;
private readonly string _passwordResetFileBaseName = "passwordreset";
private IJsonSerializer _jsonSerializer;
private IUserManager _userManager;
public DefaultPasswordResetProvider(IServerConfigurationManager configurationManager, IJsonSerializer jsonSerializer, IUserManager userManager)
{
_passwordResetFileBaseDir = configurationManager.ApplicationPaths.ProgramDataPath;
_passwordResetFileBase = Path.Combine(_passwordResetFileBaseDir, _passwordResetFileBaseName);
_jsonSerializer = jsonSerializer;
_userManager = userManager;
}
public async Task<PinRedeemResult> RedeemPasswordResetPin(string pin)
{
HashSet<string> usersreset = new HashSet<string>();
foreach (var resetfile in Directory.EnumerateFiles(_passwordResetFileBaseDir, $"{_passwordResetFileBaseName}*"))
{
using (var str = File.OpenRead(resetfile))
{
var spr = await _jsonSerializer.DeserializeFromStreamAsync<SerializablePasswordReset>(str).ConfigureAwait(false);
}
if (spr.ExpirationDate < DateTime.Now)
{
File.Delete(resetfile);
}
else if (spr.Pin == pin)
{
var resetUser = _userManager.GetUserByName(spr.UserName);
if (resetUser != null)
{
await _userManager.ChangePassword(resetUser, pin).ConfigureAwait(false);
usersreset.Add(resetUser.Name);
File.Delete(resetfile);
}
}
}
if (usersreset.Count < 1)
{
throw new ResourceNotFoundException($"No Users found with a password reset request matching pin {pin}");
}
else
{
return new PinRedeemResult
{
Success = true,
UsersReset = usersreset.ToArray()
};
}
}
public async Task<ForgotPasswordResult> StartForgotPasswordProcess(MediaBrowser.Controller.Entities.User user, bool isInNetwork)
{
string pin = new Random().Next(99999999).ToString("00000000",CultureInfo.InvariantCulture);
DateTime expireTime = DateTime.Now.AddMinutes(30);
string filePath = _passwordResetFileBase + user.InternalId + ".json";
SerializablePasswordReset spr = new SerializablePasswordReset
{
ExpirationDate = expireTime,
Pin = pin,
PinFile = filePath,
UserName = user.Name
};
try
{
FileStream fileStream = File.OpenWrite(filePath);
_jsonSerializer.SerializeToStream(spr,fileStream);
await fileStream.FlushAsync().ConfigureAwait(false);
}
catch (Exception e)
{
throw new Exception($"Error serializing or writing password reset for {user.Name} to location: {filePath}", e);
}
return new ForgotPasswordResult
{
Action = ForgotPasswordAction.PinCode,
PinExpirationDate = expireTime,
PinFile = filePath
};
}
private class SerializablePasswordReset : PasswordPinCreationResult
{
public string Pin { get; set; }
public string UserName { get; set; }
}
}
}
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