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using Nancy.Security;
using System;
using System.Collections.Generic;
using System.Collections.Specialized;
namespace BCR
{
public class UserDatabase
{
private static Dictionary<string, BCRUser> users = new Dictionary<string, BCRUser>();
private static object lockObject = new object();
static UserDatabase()
{
}
// TODO: add timeout for apikey.
public static IUserIdentity GetUserFromApiKey(string apiKey)
{
if (apiKey == null)
return null;
BCRUser user;
if (users.TryGetValue(apiKey, out user))
return user;
NameValueCollection result = Database.Instance.QuerySingle("SELECT user.id as id, username, apikey, fullname FROM user JOIN user_apikeys ON user.id=user_apikeys.user_id WHERE apikey = '" + apiKey + "' LIMIT 1;");
if (result == null)
return null;
user = new BCRUser { UserName = result["username"], UserId = Convert.ToInt32(result["id"]), FullName = result["fullname"] };
user.Initialize();
lock (lockObject)
{
users[apiKey] = user;
}
return user;
}
public static string LoginUser(string username, string password)
{
NameValueCollection result = Database.Instance.QuerySingle("SELECT * FROM user WHERE username = '" + username + "' COLLATE NOCASE LIMIT 1;");
if (result == null)
return null;
SaltedHash.SaltedHash sh = new SaltedHash.SaltedHash();
if (!sh.VerifyHashString(password, result["password"], result["salt"]))
{
// invalid password
Console.WriteLine("Invalid password for user " + username);
return null;
}
//now that the user is validated, create an api key that can be used for subsequent requests
var apiKey = Guid.NewGuid().ToString();
Database.Instance.ExecuteNonQuery("INSERT INTO user_apikeys (user_id, apikey) VALUES (" + result["id"] + ", '" + apiKey + "');");
return apiKey;
}
public static void RemoveApiKey(string apiKey)
{
Database.Instance.ExecuteNonQuery("DELETE FROM user_apikeys WHERE apikey = '" + apiKey + "';");
users.Remove(apiKey);
}
public static int GetUserId(string username)
{
object result = Database.Instance.ExecuteScalar("SELECT id FROM user WHERE username = '" + username + "' LIMIT 1;");
if (result == null)
return -1;
else
return Convert.ToInt32(result);
}
public static bool AddUser(string username, string password)
{
SaltedHash.SaltedHash sh = new SaltedHash.SaltedHash();
string hash;
string salt;
sh.GetHashAndSaltString(password, out hash, out salt);
int result = Database.Instance.ExecuteNonQuery("INSERT INTO user (username, password, salt) VALUES ('" + username + "','" + hash + "','" + salt + "');");
if (result > 0)
{
/*
ComicListItemFolder userFolder = new ComicListItemFolder(name);
ComicIdListItem readingList = new ComicIdListItem("Reading");
userFolder.Items.Add(readingList);
ComicIdListItem favoritesList = new ComicIdListItem("Favorites");
userFolder.Items.Add(favoritesList);
((ComicLibrary)Program.Database).ComicLists.Add(userFolder);
*/
return true;
}
return false;
}
public static bool RemoveUser(int userid)
{
int result = Database.Instance.ExecuteNonQuery("DELETE FROM user WHERE id = " + userid + ";");
return result > 0;
}
public static bool SetPassword(int userid, string password)
{
// TODO: validate password strength
// TODO: remove active api keys
SaltedHash.SaltedHash sh = new SaltedHash.SaltedHash();
string hash;
string salt;
sh.GetHashAndSaltString(password, out hash, out salt);
int result = Database.Instance.ExecuteNonQuery("UPDATE user SET password='" + hash + "', salt='" + salt + "' WHERE id=" + userid + ";");
return result > 0;
}
/*
public static bool SetUsername(int userid, string username)
{
// TODO: check if username is unique
int result = Database.Instance.ExecuteNonQuery("UPDATE user SET username='" + username + "' WHERE id=" + userid + ";");
return result > 0;
}
*/
public static bool SetFullName(int userid, string fullname)
{
int result = Database.Instance.ExecuteNonQuery("UPDATE user SET fullname='" + fullname + "' WHERE id=" + userid + ";");
return result > 0;
}
}
}
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