using MediaBrowser.Common.Events;
using MediaBrowser.Common.Extensions;
using MediaBrowser.Common.Net;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Connect;
using MediaBrowser.Controller.Drawing;
using MediaBrowser.Controller.Dto;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Persistence;
using MediaBrowser.Controller.Providers;
using MediaBrowser.Model.Configuration;
using MediaBrowser.Model.Connect;
using MediaBrowser.Model.Dto;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Events;
using MediaBrowser.Model.Logging;
using MediaBrowser.Model.Serialization;
using MediaBrowser.Server.Implementations.Security;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Server.Implementations.Library
{
///
/// Class UserManager
///
public class UserManager : IUserManager
{
///
/// Gets the users.
///
/// The users.
public IEnumerable Users { get; private set; }
///
/// The _logger
///
private readonly ILogger _logger;
///
/// Gets or sets the configuration manager.
///
/// The configuration manager.
private IServerConfigurationManager ConfigurationManager { get; set; }
///
/// Gets the active user repository
///
/// The user repository.
private IUserRepository UserRepository { get; set; }
public event EventHandler> UserPasswordChanged;
private readonly IXmlSerializer _xmlSerializer;
private readonly INetworkManager _networkManager;
private readonly Func _imageProcessorFactory;
private readonly Func _dtoServiceFactory;
private readonly Func _connectFactory;
///
/// Initializes a new instance of the class.
///
/// The logger.
/// The configuration manager.
/// The user repository.
public UserManager(ILogger logger, IServerConfigurationManager configurationManager, IUserRepository userRepository, IXmlSerializer xmlSerializer, INetworkManager networkManager, Func imageProcessorFactory, Func dtoServiceFactory, Func connectFactory)
{
_logger = logger;
UserRepository = userRepository;
_xmlSerializer = xmlSerializer;
_networkManager = networkManager;
_imageProcessorFactory = imageProcessorFactory;
_dtoServiceFactory = dtoServiceFactory;
_connectFactory = connectFactory;
ConfigurationManager = configurationManager;
Users = new List();
}
#region UserUpdated Event
///
/// Occurs when [user updated].
///
public event EventHandler> UserUpdated;
public event EventHandler> UserConfigurationUpdated;
///
/// Called when [user updated].
///
/// The user.
private void OnUserUpdated(User user)
{
EventHelper.FireEventIfNotNull(UserUpdated, this, new GenericEventArgs { Argument = user }, _logger);
}
#endregion
#region UserDeleted Event
///
/// Occurs when [user deleted].
///
public event EventHandler> UserDeleted;
///
/// Called when [user deleted].
///
/// The user.
private void OnUserDeleted(User user)
{
EventHelper.QueueEventIfNotNull(UserDeleted, this, new GenericEventArgs { Argument = user }, _logger);
}
#endregion
///
/// Gets a User by Id
///
/// The id.
/// User.
///
public User GetUserById(Guid id)
{
if (id == Guid.Empty)
{
throw new ArgumentNullException("id");
}
return Users.FirstOrDefault(u => u.Id == id);
}
///
/// Gets the user by identifier.
///
/// The identifier.
/// User.
public User GetUserById(string id)
{
return GetUserById(new Guid(id));
}
public async Task Initialize()
{
Users = await LoadUsers().ConfigureAwait(false);
}
public Task AuthenticateUser(string username, string passwordSha1, string remoteEndPoint)
{
return AuthenticateUser(username, passwordSha1, null, remoteEndPoint);
}
public async Task AuthenticateUser(string username, string passwordSha1, string passwordMd5, string remoteEndPoint)
{
if (string.IsNullOrWhiteSpace(username))
{
throw new ArgumentNullException("username");
}
var user = Users.First(i => string.Equals(username, i.Name, StringComparison.OrdinalIgnoreCase));
if (user.Configuration.IsDisabled)
{
throw new AuthenticationException(string.Format("The {0} account is currently disabled. Please consult with your administrator.", user.Name));
}
var success = false;
// Authenticate using local credentials if not a guest
if (!user.ConnectLinkType.HasValue || user.ConnectLinkType.Value != UserLinkType.Guest)
{
success = string.Equals(GetPasswordHash(user), passwordSha1.Replace("-", string.Empty), StringComparison.OrdinalIgnoreCase);
if (!success && _networkManager.IsInLocalNetwork(remoteEndPoint) && user.Configuration.EnableLocalPassword)
{
success = string.Equals(GetLocalPasswordHash(user), passwordSha1.Replace("-", string.Empty), StringComparison.OrdinalIgnoreCase);
}
}
// Maybe user accidently entered connect credentials. let's be flexible
if (!success && user.ConnectLinkType.HasValue && !string.IsNullOrWhiteSpace(passwordMd5))
{
try
{
await _connectFactory().Authenticate(user.ConnectUserName, passwordMd5).ConfigureAwait(false);
success = true;
}
catch
{
}
}
// Update LastActivityDate and LastLoginDate, then save
if (success)
{
user.LastActivityDate = user.LastLoginDate = DateTime.UtcNow;
await UpdateUser(user).ConfigureAwait(false);
}
_logger.Info("Authentication request for {0} {1}.", user.Name, (success ? "has succeeded" : "has been denied"));
return success;
}
private string GetPasswordHash(User user)
{
return string.IsNullOrEmpty(user.Password)
? GetSha1String(string.Empty)
: user.Password;
}
private string GetLocalPasswordHash(User user)
{
return string.IsNullOrEmpty(user.LocalPassword)
? GetSha1String(string.Empty)
: user.LocalPassword;
}
private bool IsPasswordEmpty(string passwordHash)
{
return string.Equals(passwordHash, GetSha1String(string.Empty), StringComparison.OrdinalIgnoreCase);
}
///
/// Gets the sha1 string.
///
/// The STR.
/// System.String.
private static string GetSha1String(string str)
{
using (var provider = SHA1.Create())
{
var hash = provider.ComputeHash(Encoding.UTF8.GetBytes(str));
return BitConverter.ToString(hash).Replace("-", string.Empty);
}
}
///
/// Loads the users from the repository
///
/// IEnumerable{User}.
private async Task> LoadUsers()
{
var users = UserRepository.RetrieveAllUsers().ToList();
// There always has to be at least one user.
if (users.Count == 0)
{
var name = Environment.UserName;
var user = InstantiateNewUser(name, false);
user.DateLastSaved = DateTime.UtcNow;
await UserRepository.SaveUser(user, CancellationToken.None).ConfigureAwait(false);
users.Add(user);
user.Configuration.IsAdministrator = true;
user.Configuration.EnableRemoteControlOfOtherUsers = true;
UpdateConfiguration(user, user.Configuration);
}
return users;
}
public UserDto GetUserDto(User user, string remoteEndPoint = null)
{
if (user == null)
{
throw new ArgumentNullException("user");
}
var passwordHash = GetPasswordHash(user);
var hasConfiguredDefaultPassword = !IsPasswordEmpty(passwordHash);
var hasPassword = user.Configuration.EnableLocalPassword && !string.IsNullOrEmpty(remoteEndPoint) && _networkManager.IsInLocalNetwork(remoteEndPoint) ?
!IsPasswordEmpty(GetLocalPasswordHash(user)) :
hasConfiguredDefaultPassword;
var dto = new UserDto
{
Id = user.Id.ToString("N"),
Name = user.Name,
HasPassword = hasPassword,
HasConfiguredPassword = hasConfiguredDefaultPassword,
LastActivityDate = user.LastActivityDate,
LastLoginDate = user.LastLoginDate,
Configuration = user.Configuration,
ConnectLinkType = user.ConnectLinkType,
ConnectUserId = user.ConnectUserId,
ConnectUserName = user.ConnectUserName
};
var image = user.GetImageInfo(ImageType.Primary, 0);
if (image != null)
{
dto.PrimaryImageTag = GetImageCacheTag(user, image);
try
{
_dtoServiceFactory().AttachPrimaryImageAspectRatio(dto, user);
}
catch (Exception ex)
{
// Have to use a catch-all unfortunately because some .net image methods throw plain Exceptions
_logger.ErrorException("Error generating PrimaryImageAspectRatio for {0}", ex, user.Name);
}
}
return dto;
}
private string GetImageCacheTag(BaseItem item, ItemImageInfo image)
{
try
{
return _imageProcessorFactory().GetImageCacheTag(item, image);
}
catch (Exception ex)
{
_logger.ErrorException("Error getting {0} image info for {1}", ex, image.Type, image.Path);
return null;
}
}
///
/// Refreshes metadata for each user
///
/// The cancellation token.
/// Task.
public Task RefreshUsersMetadata(CancellationToken cancellationToken)
{
var tasks = Users.Select(user => user.RefreshMetadata(new MetadataRefreshOptions(), cancellationToken)).ToList();
return Task.WhenAll(tasks);
}
///
/// Renames the user.
///
/// The user.
/// The new name.
/// Task.
/// user
///
public async Task RenameUser(User user, string newName)
{
if (user == null)
{
throw new ArgumentNullException("user");
}
if (string.IsNullOrEmpty(newName))
{
throw new ArgumentNullException("newName");
}
if (Users.Any(u => u.Id != user.Id && u.Name.Equals(newName, StringComparison.OrdinalIgnoreCase)))
{
throw new ArgumentException(string.Format("A user with the name '{0}' already exists.", newName));
}
if (user.Name.Equals(newName, StringComparison.Ordinal))
{
throw new ArgumentException("The new and old names must be different.");
}
await user.Rename(newName);
OnUserUpdated(user);
}
///
/// Updates the user.
///
/// The user.
/// user
///
public async Task UpdateUser(User user)
{
if (user == null)
{
throw new ArgumentNullException("user");
}
if (user.Id == Guid.Empty || !Users.Any(u => u.Id.Equals(user.Id)))
{
throw new ArgumentException(string.Format("User with name '{0}' and Id {1} does not exist.", user.Name, user.Id));
}
user.DateModified = DateTime.UtcNow;
user.DateLastSaved = DateTime.UtcNow;
await UserRepository.SaveUser(user, CancellationToken.None).ConfigureAwait(false);
OnUserUpdated(user);
}
public event EventHandler> UserCreated;
private readonly SemaphoreSlim _userListLock = new SemaphoreSlim(1, 1);
///
/// Creates the user.
///
/// The name.
/// User.
/// name
///
public async Task CreateUser(string name)
{
if (string.IsNullOrWhiteSpace(name))
{
throw new ArgumentNullException("name");
}
if (Users.Any(u => u.Name.Equals(name, StringComparison.OrdinalIgnoreCase)))
{
throw new ArgumentException(string.Format("A user with the name '{0}' already exists.", name));
}
await _userListLock.WaitAsync(CancellationToken.None).ConfigureAwait(false);
try
{
var user = InstantiateNewUser(name, true);
var list = Users.ToList();
list.Add(user);
Users = list;
user.DateLastSaved = DateTime.UtcNow;
await UserRepository.SaveUser(user, CancellationToken.None).ConfigureAwait(false);
EventHelper.QueueEventIfNotNull(UserCreated, this, new GenericEventArgs { Argument = user }, _logger);
return user;
}
finally
{
_userListLock.Release();
}
}
///
/// Deletes the user.
///
/// The user.
/// Task.
/// user
///
public async Task DeleteUser(User user)
{
if (user == null)
{
throw new ArgumentNullException("user");
}
if (user.ConnectLinkType.HasValue)
{
await _connectFactory().RemoveConnect(user.Id.ToString("N")).ConfigureAwait(false);
}
var allUsers = Users.ToList();
if (allUsers.FirstOrDefault(u => u.Id == user.Id) == null)
{
throw new ArgumentException(string.Format("The user cannot be deleted because there is no user with the Name {0} and Id {1}.", user.Name, user.Id));
}
if (allUsers.Count == 1)
{
throw new ArgumentException(string.Format("The user '{0}' cannot be deleted because there must be at least one user in the system.", user.Name));
}
if (user.Configuration.IsAdministrator && allUsers.Count(i => i.Configuration.IsAdministrator) == 1)
{
throw new ArgumentException(string.Format("The user '{0}' cannot be deleted because there must be at least one admin user in the system.", user.Name));
}
await _userListLock.WaitAsync(CancellationToken.None).ConfigureAwait(false);
try
{
await UserRepository.DeleteUser(user, CancellationToken.None).ConfigureAwait(false);
var path = user.ConfigurationFilePath;
try
{
File.Delete(path);
}
catch (IOException ex)
{
_logger.ErrorException("Error deleting file {0}", ex, path);
}
// Force this to be lazy loaded again
Users = await LoadUsers().ConfigureAwait(false);
OnUserDeleted(user);
}
finally
{
_userListLock.Release();
}
}
///
/// Resets the password by clearing it.
///
/// Task.
public Task ResetPassword(User user)
{
return ChangePassword(user, string.Empty);
}
///
/// Changes the password.
///
/// The user.
/// The new password.
/// Task.
public async Task ChangePassword(User user, string newPassword)
{
if (user == null)
{
throw new ArgumentNullException("user");
}
if (user.ConnectLinkType.HasValue && user.ConnectLinkType.Value == UserLinkType.Guest)
{
throw new ArgumentException("Passwords for guests cannot be changed.");
}
user.Password = string.IsNullOrEmpty(newPassword) ? GetSha1String(string.Empty) : GetSha1String(newPassword);
await UpdateUser(user).ConfigureAwait(false);
EventHelper.FireEventIfNotNull(UserPasswordChanged, this, new GenericEventArgs(user), _logger);
}
///
/// Instantiates the new user.
///
/// The name.
/// if set to true [check identifier].
/// User.
private User InstantiateNewUser(string name, bool checkId)
{
var id = ("MBUser" + name).GetMD5();
if (checkId && Users.Select(i => i.Id).Contains(id))
{
id = Guid.NewGuid();
}
return new User
{
Name = name,
Id = id,
DateCreated = DateTime.UtcNow,
DateModified = DateTime.UtcNow,
UsesIdForConfigurationPath = true
};
}
public void UpdateConfiguration(User user, UserConfiguration newConfiguration)
{
var xmlPath = user.ConfigurationFilePath;
Directory.CreateDirectory(Path.GetDirectoryName(xmlPath));
_xmlSerializer.SerializeToFile(newConfiguration, xmlPath);
EventHelper.FireEventIfNotNull(UserConfigurationUpdated, this, new GenericEventArgs { Argument = user }, _logger);
}
}
}