90 lines
2.7 KiB
C#
90 lines
2.7 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading;
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using System.IO;
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namespace USB_Lockdown
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{
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class authentication
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{
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internal static Thread authenticationThread;
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internal static Thread deviceScanner;
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internal static void startScanning()
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{
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Thread authenticationThread = new Thread(beginAuthentication);
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}
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internal static void beginAuthentication()
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{
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deviceScan.calculateHash();
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Thread deviceScanner = new Thread(deviceScan.scanDevices);
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deviceScanner.Join(); //the thread will exit when a valid drive has been found
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//code here to unlock computer and stuff
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}
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}
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class deviceScan
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{
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internal static DriveInfo validDrive;
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internal static DriveInfo[] driveListing;
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private static bool driveFound = false;
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internal static string originalHash;
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internal static void calculateHash()
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{
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//decide how to do this!
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}
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internal static void scanDevices()
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{
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while (!driveFound) {
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driveListing = DriveInfo.GetDrives();
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foreach (DriveInfo currentDrive in driveListing)
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{
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try { string driveName = currentDrive.VolumeLabel; string driveLabel = currentDrive.Name; }
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catch { }
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if (File.Exists(currentDrive.Name + "\\LockDown.config")) // the first check for a valid drive. Could be something else, but this is a lightweight test to be done first!
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{
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if (driveValidate(currentDrive)) //runs the full validation of the drive
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{
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validDrive = currentDrive;
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driveFound = true;
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break;
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}
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}
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}
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}
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}
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internal static bool driveValidate(DriveInfo drive){
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if (!checkHash(drive)) {
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return false;
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}
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return true;
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}
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private static bool checkHash(DriveInfo drive)
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{
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string fileName = drive.Name + "";
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if (!File.Exists(fileName)) { return false; }
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using (BinaryReader reader = new BinaryReader(File.Open(fileName, FileMode.Open)))
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{
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string hashFromDrive = reader.ReadString();
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if (hashFromDrive != )
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}
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return true;
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}
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internal static void resetValues()
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{
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validDrive = null;
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driveListing = null;
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driveFound = false;
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}
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}
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}
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