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/*
* MIT License
*
* Copyright (c) 2017 Michael VanOverbeek and ShiftOS devs
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using Newtonsoft.Json;
using static ShiftOS.Objects.ShiftFS.Utils;
namespace ShiftOS.Engine
{
public static class VirusEngine
{
public static void InfectFile(string file, string virusid)
{
var infected = new List<string>();
var hData = GetHeaderText(file);
if (hData == "")
{
infected.Add(virusid);
}
else
{
infected = JsonConvert.DeserializeObject<List<string>>(hData);
if (!infected.Contains(virusid))
infected.Add(virusid);
}
SetHeaderText(file, JsonConvert.SerializeObject(infected));
}
public static void DisinfectFile(string file, int threatlevel)
{
var infected = new List<string>();
var hData = GetHeaderText(file);
if (hData != "")
{
infected = JsonConvert.DeserializeObject<List<string>>(hData);
for (int i = 0; i < infected.Count; i++)
{
string[] splitID = infected[i].Split('.');
int th = Convert.ToInt32(splitID[splitID.Length - 1]);
if (th <= threatlevel)
{
infected.RemoveAt(i);
}
}
}
SetHeaderText(file, JsonConvert.SerializeObject(infected));
}
internal static string[] FindAllVirusesInFile(string file)
{
string hdata = GetHeaderText(file);
return (hdata != "") ? new string[0] : JsonConvert.DeserializeObject<string[]>(hdata);
}
}
public abstract class Virus
{
/// <summary>
/// Inject the virus into system memory by running it.
/// </summary>
public abstract void Activate();
/// <summary>
/// Terminate the virus.
/// </summary>
public abstract void Deactivate();
public abstract int ThreatLevel { get; }
public abstract string Signature { get; }
public abstract string Type { get; }
}
}
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