/*
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* Copyright (c) 2015-2019 Beebyte Limited. All rights reserved.
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*/
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Threading;
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using UnityEditor;
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using UnityEngine;
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namespace Beebyte.Obfuscator
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{
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public class FileBackup
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{
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/**
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* Returns a map consisting of keys of the original file and a proposed target location.
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*/
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public static IDictionary<string, string> GetBackupMap(IEnumerable<string> locations)
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{
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IDictionary<string, string> pathMap = new Dictionary<string, string>();
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foreach (string location in locations)
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{
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string backupLocation = location + ".bb_obf_backup.pre";
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pathMap.Add(location, backupLocation);
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}
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return pathMap;
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}
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/**
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* Backs up files specified in the keys of the map to their corresponding values.
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*/
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public static void Backup(IDictionary<string, string> backupMap)
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{
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foreach (KeyValuePair<string,string> keyValuePair in backupMap)
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{
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//This throws an exception if the backup already exists - we want this to happen
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File.Copy(keyValuePair.Key, keyValuePair.Value);
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}
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}
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/**
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*
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*/
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public static void Restore(IDictionary<string, string> pathMap)
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{
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foreach (KeyValuePair<string, string> entry in pathMap)
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{
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string target = entry.Key;
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string backup = entry.Value;
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try
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{
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if (!File.Exists(backup)) continue;
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DeleteFileWhenPermitted(target);
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File.Move(backup, target);
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}
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catch (Exception e)
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{
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Debug.LogError("Could not restore original DLL to " + target + "\n" + e);
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}
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}
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}
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private static void DeleteFileWhenPermitted(string target)
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{
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int attempts = 60;
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while (attempts > 0)
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{
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try
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{
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if (File.Exists(target)) File.Delete(target);
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if (attempts < 60) Debug.LogWarning("Successfully accessed " + target);
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return;
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}
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catch (Exception)
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{
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Debug.LogWarning("Failed to access " + target + " - Retrying...");
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Thread.Sleep(500);
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if (--attempts <= 0) throw;
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}
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}
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}
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}
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}
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