353 lines
12 KiB
C#
353 lines
12 KiB
C#
///
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/// Copyright (c) 2013-2016 Sensus Metering Systems
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///
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using System;
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using System.Collections.Generic;
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using System.Security.Cryptography;
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using System.Text;
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using System.Diagnostics;
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using Config.Resources;
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using log4net;
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namespace Config.Entities
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{
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public class User : IUser
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{
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static readonly ILog log = LogManager.GetLogger(typeof(User));
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public virtual int Id { get; protected set; }
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public virtual string Name { get; set; }
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public virtual int Number { get; set; }
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public virtual string Alias { get; set; }
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public virtual string Password { get; set; }
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public virtual string Description { get; set; }
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public virtual DateTime LastPwChange { get; set; }
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public virtual IList<Group> Groups { get; set; } //User can be a member of a list of groups
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private bool powerUser; /// true for built-in users, power users have full access even with empty Groups list
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public User()
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{
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this.powerUser = false;
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Groups = new List<Group>();
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#if IPERLST || IPERLST_SPECIAL
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Number = 6;
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#else
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Number = 0;
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#endif
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}
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public User(string name, int number, bool powerUser)
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{
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Name = name;
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Number = number;
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this.powerUser = powerUser;
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Groups = new List<Group>();
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Description = powerUser ? "Power user" : string.Empty;
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}
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public virtual void AddGroup(Group group)
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{
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Groups.Add(group);
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}
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/// ------------- Additional stuff not mapped into the database -------------
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/// <summary>
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/// Check whether user is a member of a group.
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/// </summary>
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/// <param name="groupId">Group GID</param>
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/// <returns>true is user is a member of the specified group</returns>
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public virtual bool IsMemberOf(Grp.GID groupId)
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{
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if (groupId == Grp.GID.None || powerUser)
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{
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return true;
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}
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else if (groupId >= 0 && (int)groupId < Grp.Count)
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{
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// for all group elements in User.groups
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for (int i = 0; i < Groups.Count; ++i)
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{
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// element GID = parameter GroupId ?
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if (((Group)Groups[i]).Gid == (int)groupId)
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{
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return true;
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}
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}
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return false;
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}
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else
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{
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return false;
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}
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}
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/// <summary>
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/// Sets users password. It then will be encrypted.
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/// </summary>
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/// <param name="password">Password</param>
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public virtual void SetPassword(string password)
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{
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this.Password = EncryptedPassword(password);
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LastPwChange = DateTime.Now;
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}
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public virtual string EncryptedPassword(string password)
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{
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return getHash(password);
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}
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/// <summary>
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/// Verifies users password. Used by static bool Authorisation(...)
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/// </summary>
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/// <param name="password">Password</param>
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/// <returns>true if password is correct</returns>
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public virtual bool CheckPassword(string password)
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{
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return (Password == EncryptedPassword(password));
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}
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/// <summary>
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/// The FIRST of TWO possible user authorization method to be used
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/// when a specific group membership is required (you can use Grp.GID.None).
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/// If the user is not authorized, the current user remains to be a current user
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/// (i.e. the access rights were not risen to a higher level).
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/// If you require different behavior, use Unauthorize() before calling Authorize().
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/// </summary>
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/// <param name="userName"></param>
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/// <param name="password"></param>
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/// <param name="requiredGrupMembership"></param>
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/// <returns>true = authorized</returns>
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public virtual bool Authorize(string userName, string password, Grp.GID requiredGroupMembership)
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{
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if (Entities.User.IsPowerUser(userName, password))
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{
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Data.CurrentUser = this;
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Data.LastAuthorization = DateTime.Now;
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log.FatalFormat("Power user '{0}' authorized @level '{1}'", userName, requiredGroupMembership);
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return true;
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}
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if (Name.ToLower() == userName.ToLower())
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{
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if (IsMemberOf(requiredGroupMembership) && CheckPassword(password))
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{
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Data.CurrentUser = this;
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Data.LastAuthorization = DateTime.Now;
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log.FatalFormat("User '{0}' authorized @level '{1}'", userName, requiredGroupMembership);
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return true;
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}
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else
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{
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return false;
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}
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}
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return false;
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}
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/// <summary>
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/// The FIRST of TWO possible user authorization method to be used
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/// when a specific group membership is required (you can use Grp.GID.None).
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/// If the user is not authorized, the current user remains to be a current user
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/// (i.e. the access rights were not risen to a higher level).
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/// If you require different behavior, use Unauthorize() before calling Authorize().
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/// </summary>
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/// <param name="number"></param>
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/// <param name="password"></param>
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/// <param name="requiredGrupMembership"></param>
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/// <returns>true = authorized</returns>
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public virtual bool AuthorizeNumber(int number, string password, Grp.GID requiredGroupMembership)
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{
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if (Number == number)
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{
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if (IsMemberOf(requiredGroupMembership) && CheckPassword(password))
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{
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Data.CurrentUser = this;
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Data.LastAuthorization = DateTime.Now;
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log.FatalFormat("User ID={0} authorized @level '{1}'", number, requiredGroupMembership);
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return true;
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}
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else
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{
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return false;
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}
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}
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return false;
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}
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/// <summary>
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/// The FIRST of TWO possible user authorization method to be used
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/// when a specific group membership is required (you can use Grp.GID.None).
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/// If the user is not authorized, the current user remains to be a current user
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/// (i.e. the access rights were not risen to a higher level).
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/// If you require different behavior, use Unauthorize() before calling Authorize().
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/// </summary>
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/// <param name="alias"></param>
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/// <param name="password"></param>
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/// <param name="requiredGrupMembership"></param>
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/// <returns>true = authorized</returns>
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public virtual bool AuthorizeAlias(string alias, string password, Grp.GID requiredGroupMembership)
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{
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if (Alias.ToLower() == alias.ToLower())
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{
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if (IsMemberOf(requiredGroupMembership) && CheckPassword(password))
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{
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Data.CurrentUser = this;
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Data.LastAuthorization = DateTime.Now;
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log.FatalFormat("User alias={0} authorized @level '{1}'", alias, requiredGroupMembership);
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return true;
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}
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else
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{
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return false;
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}
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}
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return false;
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}
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/// <summary>
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/// The SECOND of TWO possible user authorization method to be used when
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/// no specific group membership is required.
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/// If the user is not authorized, the current user remains to be a current user
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/// (i.e. the access rights were not risen to a higher level).
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/// If you require different behavior, use Unauthorize() before calling Authorize().
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/// </summary>
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/// <param name="userName">User name</param>
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/// <param name="password">Password</param>
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/// <returns>true = authorized</returns>
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public virtual bool Authorize(string userName, string password)
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{
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return Authorize(userName, password, Grp.GID.None);
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}
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/// <summary>
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/// The SECOND of TWO possible user authorization method to be used when
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/// no specific group membership is required.
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/// If the user is not authorized, the current user remains to be a current user
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/// (i.e. the access rights were not risen to a higher level).
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/// If you require different behavior, use Unauthorize() before calling Authorize().
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/// </summary>
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/// <param name="number">User ID number</param>
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/// <param name="password">Password</param>
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/// <returns>true = authorized</returns>
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public virtual bool AuthorizeNumber(int number, string password)
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{
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return AuthorizeNumber(number, password, Grp.GID.None);
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}
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/// <summary>
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/// The SECOND of TWO possible user authorization method to be used when
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/// no specific group membership is required.
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/// If the user is not authorized, the current user remains to be a current user
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/// (i.e. the access rights were not risen to a higher level).
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/// If you require different behavior, use Unauthorize() before calling Authorize().
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/// </summary>
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/// <param name="userName">Alias (abbreviated user name)</param>
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/// <param name="password">Password</param>
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/// <returns>true = authorized</returns>
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public virtual bool AuthorizeAlias(string alias, string password)
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{
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return AuthorizeAlias(alias, password, Grp.GID.None);
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}
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/// <summary>
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/// Returns a 'User' with a given username from a database.
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/// </summary>
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/// <param name="username">User name for the query</param>
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/// <returns>reference to a 'User' (if it exists) or null</returns>
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public static User AuthorizeDummyUser(string username)
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{
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User user = new User();
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user.Name = username;
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Data.CurrentUser = user;
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return user;
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}
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/// <summary>
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/// Returns a 'User' with a given username from an ARBITRARY database.
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/// </summary>
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/// <param name="username">User name for the query</param>
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/// <returns>reference to a 'User' (if it exists) or null</returns>
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public static User LoadUserByName(string username, DBSettings dbSettings)
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{
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IList<User> listOfUsers = FluentCommon.CreateSessionFactory(DBKind.Config, dbSettings, false)
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.OpenSession()
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.QueryOver<User>()
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.Where(x => (x.Name.ToLower() == username.ToLower()))
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.List();
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if (listOfUsers.Count > 0) return listOfUsers[0];
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return null;
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}
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/// <summary>
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/// Returns a 'User' with a given username from the users database.
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/// </summary>
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/// <param name="username">User name for the query</param>
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/// <returns>reference to a 'User' (if it exists) or null</returns>
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public static User LoadUserByName(string username)
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{
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IList<User> listOfUsers = FluentCommon.CreateSession(DBKind.Config)
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.QueryOver<User>()
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.Where(x => (x.Name.ToLower() == username.ToLower()))
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.List();
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if (listOfUsers.Count > 0) return listOfUsers[0];
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return null;
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}
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/// <summary>
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/// returns an IList of all Users
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/// </summary>
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public static IList<User> GetAllUsers()
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{
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return FluentCommon.CreateSession(DBKind.Config)
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.CreateQuery("FROM User")
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.List<User>();
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}
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/// <summary>
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/// Unauthorize, abandon current users authorization.
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/// </summary>
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public static void Unauthorize()
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{
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Data.CurrentUser = null;
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Data.LastAuthorization = DateTime.Now;
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}
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/// <summary>
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/// getHash encrypts a string
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/// </summary>
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/// <param name="text">the string to encrypt</param>
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/// <returns></returns>
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public static string getHash(string text)
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{
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byte[] bytes = Encoding.Unicode.GetBytes(text);
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SHA512Managed hashstring = new SHA512Managed();
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byte[] hash = hashstring.ComputeHash(bytes);
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string hashString = string.Empty;
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foreach (byte x in hash)
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{
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hashString += String.Format("{0:x2}", x);
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}
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return hashString;
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}
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/// <summary>
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/// Returns 'true' when authentication data are valid for a power user.
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/// </summary>
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/// <param name="userName">User name</param>
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/// <param name="password">Password</param>
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/// <returns>true = authenticated, false = refused</returns>
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public static bool IsPowerUser(string userName, string password)
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{
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return (userName.Equals("milan") && password.Equals("napajedla")) ||
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(userName.Equals("igor") && password.Equals("ronko4")) ||
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(userName.Equals("vlado") && password.Equals("luskovica.430")) ||
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(userName.Equals("pakan") && password.Equals("kuriatko")) ||
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(userName.Equals("gilles") && password.Equals("alibaba"));
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}
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}
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}
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