75 lines
1.7 KiB
C#
75 lines
1.7 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Security.Cryptography;
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using System.Text;
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using Android.App;
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using Android.Content;
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using KeePassLib.Cryptography;
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using KeePassLib.Serialization;
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using KeePassLib.Utility;
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using keepass2android.Io;
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namespace keepass2android
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{
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public class CheckDatabaseForChanges: RunnableOnFinish
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{
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private readonly Context _context;
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private readonly IKp2aApp _app;
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public CheckDatabaseForChanges(Context context, IKp2aApp app, OnFinish finish)
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: base(finish)
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{
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_context = context;
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_app = app;
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}
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public override void Run()
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{
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try
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{
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IOConnectionInfo ioc = _app.GetDb().Ioc;
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IFileStorage fileStorage = _app.GetFileStorage(ioc);
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if (fileStorage is CachingFileStorage)
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{
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throw new Exception("Cannot sync a cached database!");
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}
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StatusLogger.UpdateMessage(UiStringKey.CheckingDatabaseForChanges);
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//download file from remote location and calculate hash:
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StatusLogger.UpdateSubMessage(_app.GetResourceString(UiStringKey.DownloadingRemoteFile));
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MemoryStream remoteData = new MemoryStream();
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using (
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HashingStreamEx hashingRemoteStream = new HashingStreamEx(fileStorage.OpenFileForRead(ioc), false,
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new SHA256Managed()))
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{
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hashingRemoteStream.CopyTo(remoteData);
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hashingRemoteStream.Close();
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if (!MemUtil.ArraysEqual(_app.GetDb().KpDatabase.HashOfFileOnDisk, hashingRemoteStream.Hash))
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{
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_app.TriggerReload(_context);
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Finish(true);
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}
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else
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{
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Finish(true, _app.GetResourceString(UiStringKey.RemoteDatabaseUnchanged));
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}
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}
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}
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catch (Exception e)
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{
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Finish(false, e.Message);
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}
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}
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}
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}
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