mirror of
https://github.com/wismna/ModernKeePass.git
synced 2025-10-03 23:50:18 -04:00
726 lines
19 KiB
C#
726 lines
19 KiB
C#
/*
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KeePass Password Safe - The Open-Source Password Manager
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Copyright (C) 2003-2014 Dominik Reichl <dominik.reichl@t-online.de>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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using System;
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using System.IO;
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using System.Net;
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using System.Diagnostics;
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using Windows.Storage.Streams;
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using System.Threading.Tasks;
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#if (!ModernKeePassLibPCL && !KeePassLibSD && !KeePassRT)
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using System.Net.Cache;
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using System.Net.Security;
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#endif
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#if !ModernKeePassLibPCL && !KeePassRT
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using System.Security.Cryptography.X509Certificates;
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#endif
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#if ModernKeePassLibPCL
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using Windows.Storage;
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//using PCLStorage;
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#endif
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using ModernKeePassLibPCL.Utility;
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namespace ModernKeePassLibPCL.Serialization
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{
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#if (!ModernKeePassLibPCL && !KeePassLibSD && !KeePassRT)
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internal sealed class IOWebClient : WebClient
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{
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protected override WebRequest GetWebRequest(Uri address)
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{
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WebRequest request = base.GetWebRequest(address);
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IOConnection.ConfigureWebRequest(request);
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return request;
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}
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}
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#endif
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#if !ModernKeePassLibPCL
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internal abstract class WrapperStream : Stream
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{
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private readonly Stream m_s;
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protected Stream BaseStream
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{
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get { return m_s; }
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}
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public override bool CanRead
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{
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get { return m_s.CanRead; }
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}
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public override bool CanSeek
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{
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get { return m_s.CanSeek; }
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}
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public override bool CanTimeout
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{
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get { return m_s.CanTimeout; }
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}
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public override bool CanWrite
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{
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get { return m_s.CanWrite; }
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}
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public override long Length
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{
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get { return m_s.Length; }
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}
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public override long Position
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{
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get { return m_s.Position; }
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set { m_s.Position = value; }
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}
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public override int ReadTimeout
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{
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get { return m_s.ReadTimeout; }
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set { m_s.ReadTimeout = value; }
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}
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public override int WriteTimeout
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{
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get { return m_s.WriteTimeout; }
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set { m_s.WriteTimeout = value; }
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}
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public WrapperStream(Stream sBase) : base()
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{
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if(sBase == null) throw new ArgumentNullException("sBase");
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m_s = sBase;
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}
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public override IAsyncResult BeginRead(byte[] buffer, int offset,
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int count, AsyncCallback callback, object state)
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{
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return m_s.BeginRead(buffer, offset, count, callback, state);
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}
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public override IAsyncResult BeginWrite(byte[] buffer, int offset,
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int count, AsyncCallback callback, object state)
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{
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return BeginWrite(buffer, offset, count, callback, state);
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}
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public override void Close()
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{
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m_s.Close();
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}
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public override int EndRead(IAsyncResult asyncResult)
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{
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return m_s.EndRead(asyncResult);
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}
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public override void EndWrite(IAsyncResult asyncResult)
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{
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m_s.EndWrite(asyncResult);
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}
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public override void Flush()
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{
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m_s.Flush();
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}
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public override int Read(byte[] buffer, int offset, int count)
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{
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return m_s.Read(buffer, offset, count);
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}
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public override int ReadByte()
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{
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return m_s.ReadByte();
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}
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public override long Seek(long offset, SeekOrigin origin)
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{
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return m_s.Seek(offset, origin);
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}
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public override void SetLength(long value)
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{
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m_s.SetLength(value);
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}
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public override void Write(byte[] buffer, int offset, int count)
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{
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m_s.Write(buffer, offset, count);
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}
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public override void WriteByte(byte value)
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{
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m_s.WriteByte(value);
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}
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}
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internal sealed class IocStream : WrapperStream
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{
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private readonly bool m_bWrite; // Initially opened for writing
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public IocStream(Stream sBase) : base(sBase)
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{
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m_bWrite = sBase.CanWrite;
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}
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public override void Close()
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{
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base.Close();
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if(MonoWorkarounds.IsRequired(10163) && m_bWrite)
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{
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try
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{
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Stream s = this.BaseStream;
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Type t = s.GetType();
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if(t.Name == "WebConnectionStream")
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{
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PropertyInfo pi = t.GetProperty("Request",
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BindingFlags.Instance | BindingFlags.NonPublic);
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if(pi != null)
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{
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WebRequest wr = (pi.GetValue(s, null) as WebRequest);
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if(wr != null)
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IOConnection.DisposeResponse(wr.GetResponse(), false);
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else { Debug.Assert(false); }
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}
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else { Debug.Assert(false); }
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}
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}
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catch(Exception) { Debug.Assert(false); }
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}
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}
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public static Stream WrapIfRequired(Stream s)
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{
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if(s == null) { Debug.Assert(false); return null; }
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if(MonoWorkarounds.IsRequired(10163) && s.CanWrite)
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return new IocStream(s);
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return s;
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}
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}
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#endif
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public static class IOConnection
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{
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#if (!ModernKeePassLibPCL && !KeePassLibSD && !KeePassRT)
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private static ProxyServerType m_pstProxyType = ProxyServerType.System;
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private static string m_strProxyAddr = string.Empty;
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private static string m_strProxyPort = string.Empty;
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private static string m_strProxyUserName = string.Empty;
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private static string m_strProxyPassword = string.Empty;
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private static bool m_bSslCertsAcceptInvalid = false;
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internal static bool SslCertsAcceptInvalid
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{
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// get { return m_bSslCertsAcceptInvalid; }
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set { m_bSslCertsAcceptInvalid = value; }
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}
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#endif
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// Web request methods
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public const string WrmDeleteFile = "DELETEFILE";
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public const string WrmMoveFile = "MOVEFILE";
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// Web request headers
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public const string WrhMoveFileTo = "MoveFileTo";
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public static event EventHandler<IOAccessEventArgs> IOAccessPre;
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#if (!ModernKeePassLibPCL && !KeePassLibSD && !KeePassRT)
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// Allow self-signed certificates, expired certificates, etc.
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private static bool AcceptCertificate(object sender,
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X509Certificate certificate, X509Chain chain,
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SslPolicyErrors sslPolicyErrors)
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{
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return true;
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}
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internal static void SetProxy(ProxyServerType pst, string strAddr,
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string strPort, string strUserName, string strPassword)
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{
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m_pstProxyType = pst;
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m_strProxyAddr = (strAddr ?? string.Empty);
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m_strProxyPort = (strPort ?? string.Empty);
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m_strProxyUserName = (strUserName ?? string.Empty);
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m_strProxyPassword = (strPassword ?? string.Empty);
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}
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internal static void ConfigureWebRequest(WebRequest request)
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{
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if(request == null) { Debug.Assert(false); return; } // No throw
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// WebDAV support
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if(request is HttpWebRequest)
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{
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request.PreAuthenticate = true; // Also auth GET
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if(request.Method == WebRequestMethods.Http.Post)
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request.Method = WebRequestMethods.Http.Put;
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}
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// else if(request is FtpWebRequest)
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// {
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// Debug.Assert(((FtpWebRequest)request).UsePassive);
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// }
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// Not implemented and ignored in Mono < 2.10
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try
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{
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request.CachePolicy = new RequestCachePolicy(RequestCacheLevel.NoCacheNoStore);
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}
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catch(NotImplementedException) { }
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catch(Exception) { Debug.Assert(false); }
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try
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{
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IWebProxy prx;
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if(GetWebProxy(out prx)) request.Proxy = prx;
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}
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catch(Exception) { Debug.Assert(false); }
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}
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internal static void ConfigureWebClient(WebClient wc)
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{
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// Not implemented and ignored in Mono < 2.10
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try
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{
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wc.CachePolicy = new RequestCachePolicy(RequestCacheLevel.NoCacheNoStore);
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}
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catch(NotImplementedException) { }
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catch(Exception) { Debug.Assert(false); }
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try
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{
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IWebProxy prx;
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if(GetWebProxy(out prx)) wc.Proxy = prx;
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}
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catch(Exception) { Debug.Assert(false); }
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}
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private static bool GetWebProxy(out IWebProxy prx)
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{
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prx = null;
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if(m_pstProxyType == ProxyServerType.None)
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return true; // Use null proxy
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if(m_pstProxyType == ProxyServerType.Manual)
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{
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try
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{
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if(m_strProxyPort.Length > 0)
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prx = new WebProxy(m_strProxyAddr, int.Parse(m_strProxyPort));
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else prx = new WebProxy(m_strProxyAddr);
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if((m_strProxyUserName.Length > 0) || (m_strProxyPassword.Length > 0))
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prx.Credentials = new NetworkCredential(m_strProxyUserName,
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m_strProxyPassword);
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return true; // Use manual proxy
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}
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catch(Exception exProxy)
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{
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string strInfo = m_strProxyAddr;
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if(m_strProxyPort.Length > 0) strInfo += ":" + m_strProxyPort;
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MessageService.ShowWarning(strInfo, exProxy.Message);
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}
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return false; // Use default
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}
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if((m_strProxyUserName.Length == 0) && (m_strProxyPassword.Length == 0))
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return false; // Use default proxy, no auth
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try
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{
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prx = WebRequest.DefaultWebProxy;
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if(prx == null) prx = WebRequest.GetSystemWebProxy();
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if(prx == null) throw new InvalidOperationException();
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prx.Credentials = new NetworkCredential(m_strProxyUserName,
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m_strProxyPassword);
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return true;
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}
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catch(Exception) { Debug.Assert(false); }
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return false;
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}
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private static void PrepareWebAccess()
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{
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if(m_bSslCertsAcceptInvalid)
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ServicePointManager.ServerCertificateValidationCallback =
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IOConnection.AcceptCertificate;
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else
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ServicePointManager.ServerCertificateValidationCallback = null;
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}
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private static IOWebClient CreateWebClient(IOConnectionInfo ioc)
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{
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PrepareWebAccess();
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IOWebClient wc = new IOWebClient();
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ConfigureWebClient(wc);
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if((ioc.UserName.Length > 0) || (ioc.Password.Length > 0))
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wc.Credentials = new NetworkCredential(ioc.UserName, ioc.Password);
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else if(NativeLib.IsUnix()) // Mono requires credentials
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wc.Credentials = new NetworkCredential("anonymous", string.Empty);
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return wc;
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}
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private static WebRequest CreateWebRequest(IOConnectionInfo ioc)
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{
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PrepareWebAccess();
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WebRequest req = WebRequest.Create(ioc.Path);
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ConfigureWebRequest(req);
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if((ioc.UserName.Length > 0) || (ioc.Password.Length > 0))
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req.Credentials = new NetworkCredential(ioc.UserName, ioc.Password);
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else if(NativeLib.IsUnix()) // Mono requires credentials
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req.Credentials = new NetworkCredential("anonymous", string.Empty);
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return req;
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}
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public static Stream OpenRead(IOConnectionInfo ioc)
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{
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RaiseIOAccessPreEvent(ioc, IOAccessType.Read);
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if(StrUtil.IsDataUri(ioc.Path))
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{
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byte[] pbData = StrUtil.DataUriToData(ioc.Path);
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if(pbData != null) return new MemoryStream(pbData, false);
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}
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if(ioc.IsLocalFile()) return OpenReadLocal(ioc);
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return IocStream.WrapIfRequired(CreateWebClient(ioc).OpenRead(
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new Uri(ioc.Path)));
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}
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#else
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public static async Task<Stream> OpenRead(IOConnectionInfo ioc)
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{
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RaiseIOAccessPreEvent(ioc, IOAccessType.Read);
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return await OpenReadLocal(ioc);
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}
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#endif
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private static async Task<Stream> OpenReadLocal(IOConnectionInfo ioc)
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{
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#if ModernKeePassLibPCL
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/*if (ioc.StorageFile != null)
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{*/
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var file = await ioc.StorageFile.OpenAsync(FileAccessMode.Read);
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return file.AsStream();
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/*}
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var file = FileSystem.Current.GetFileFromPathAsync(ioc.Path).Result;
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return file.OpenAsync(PCLStorage.FileAccess.Read).Result;*/
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#else
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return new FileStream(ioc.Path, FileMode.Open, FileAccess.Read,
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FileShare.Read);
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#endif
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}
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#if (!ModernKeePassLibPCL && !KeePassLibSD && !KeePassRT)
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public static Stream OpenWrite(IOConnectionInfo ioc)
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{
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if(ioc == null) { Debug.Assert(false); return null; }
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RaiseIOAccessPreEvent(ioc, IOAccessType.Write);
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if(ioc.IsLocalFile()) return OpenWriteLocal(ioc);
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Uri uri = new Uri(ioc.Path);
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Stream s;
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// Mono does not set HttpWebRequest.Method to POST for writes,
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// so one needs to set the method to PUT explicitly
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if(NativeLib.IsUnix() && (uri.Scheme.Equals(Uri.UriSchemeHttp,
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StrUtil.CaseIgnoreCmp) || uri.Scheme.Equals(Uri.UriSchemeHttps,
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StrUtil.CaseIgnoreCmp)))
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s = CreateWebClient(ioc).OpenWrite(uri, WebRequestMethods.Http.Put);
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else s = CreateWebClient(ioc).OpenWrite(uri);
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return IocStream.WrapIfRequired(s);
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}
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#else
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public static async Task<Stream> OpenWrite(IOConnectionInfo ioc)
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{
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RaiseIOAccessPreEvent(ioc, IOAccessType.Write);
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return await OpenWriteLocal(ioc);
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}
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#endif
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private static async Task<Stream> OpenWriteLocal(IOConnectionInfo ioc)
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{
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#if ModernKeePassLibPCL
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/*if (ioc.StorageFile != null)
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{*/
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var file = await ioc.StorageFile.OpenAsync(FileAccessMode.ReadWrite);
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return file.AsStream();
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/*}
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var file = FileSystem.Current.GetFileFromPathAsync(ioc.Path).Result;
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return file.OpenAsync(FileAccess.ReadAndWrite).Result;*/
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#else
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return new FileStream(ioc.Path, FileMode.Create, FileAccess.Write,
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FileShare.None);
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#endif
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}
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public static async Task<bool> FileExists(IOConnectionInfo ioc)
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{
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return await FileExists(ioc, false);
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}
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public static async Task<bool> FileExists(IOConnectionInfo ioc, bool bThrowErrors)
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{
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if(ioc == null) { Debug.Assert(false); return false; }
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RaiseIOAccessPreEvent(ioc, IOAccessType.Exists);
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#if ModernKeePassLibPCL
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/*if(ioc.IsLocalFile())
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return (FileSystem.Current.GetFileFromPathAsync(ioc.Path).Result != null);*/
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return ioc.StorageFile.IsAvailable;
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#else
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if(ioc.IsLocalFile()) return File.Exists(ioc.Path);
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#endif
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#if (!ModernKeePassLibPCL && !KeePassLibSD && !KeePassRT)
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if(ioc.Path.StartsWith("ftp://", StrUtil.CaseIgnoreCmp))
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{
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bool b = SendCommand(ioc, WebRequestMethods.Ftp.GetDateTimestamp);
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if(!b && bThrowErrors) throw new InvalidOperationException();
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return b;
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}
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#endif
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try
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{
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Stream s = await OpenRead(ioc);
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if(s == null) throw new FileNotFoundException();
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try { s.ReadByte(); }
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catch(Exception) { }
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// We didn't download the file completely; close may throw
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// an exception -- that's okay
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try { s.Dispose(); }
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catch(Exception) { }
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}
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catch(Exception)
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{
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if(bThrowErrors) throw;
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return false;
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}
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return true;
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}
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public static async void DeleteFile(IOConnectionInfo ioc)
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{
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RaiseIOAccessPreEvent(ioc, IOAccessType.Delete);
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#if ModernKeePassLibPCL
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if (!ioc.IsLocalFile()) return;
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await ioc.StorageFile?.DeleteAsync();
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/*var file = FileSystem.Current.GetFileFromPathAsync(ioc.Path).Result;
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file.DeleteAsync().RunSynchronously();*/
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#else
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if(ioc.IsLocalFile()) { File.Delete(ioc.Path); return; }
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#endif
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#if (!ModernKeePassLibPCL && !KeePassLibSD && !KeePassRT)
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WebRequest req = CreateWebRequest(ioc);
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if(req != null)
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{
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|
if(req is HttpWebRequest) req.Method = "DELETE";
|
|
else if(req is FtpWebRequest)
|
|
req.Method = WebRequestMethods.Ftp.DeleteFile;
|
|
else if(req is FileWebRequest)
|
|
{
|
|
File.Delete(UrlUtil.FileUrlToPath(ioc.Path));
|
|
return;
|
|
}
|
|
else req.Method = WrmDeleteFile;
|
|
|
|
DisposeResponse(req.GetResponse(), true);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/// <summary>
|
|
/// Rename/move a file. For local file system and WebDAV, the
|
|
/// specified file is moved, i.e. the file destination can be
|
|
/// in a different directory/path. In contrast, for FTP the
|
|
/// file is renamed, i.e. its destination must be in the same
|
|
/// directory/path.
|
|
/// </summary>
|
|
/// <param name="iocFrom">Source file path.</param>
|
|
/// <param name="iocTo">Target file path.</param>
|
|
public static async void RenameFile(IOConnectionInfo iocFrom, IOConnectionInfo iocTo)
|
|
{
|
|
RaiseIOAccessPreEvent(iocFrom, iocTo, IOAccessType.Move);
|
|
|
|
#if ModernKeePassLibPCL
|
|
if (!iocFrom.IsLocalFile()) return;
|
|
await iocFrom.StorageFile?.RenameAsync(iocTo.Path);
|
|
/*var file = FileSystem.Current.GetFileFromPathAsync(iocFrom.Path).Result;
|
|
file.MoveAsync(iocTo.Path).RunSynchronously();*/
|
|
#else
|
|
if(iocFrom.IsLocalFile()) { File.Move(iocFrom.Path, iocTo.Path); return; }
|
|
#endif
|
|
|
|
#if (!ModernKeePassLibPCL && !KeePassLibSD && !KeePassRT)
|
|
WebRequest req = CreateWebRequest(iocFrom);
|
|
if(req != null)
|
|
{
|
|
if(req is HttpWebRequest)
|
|
{
|
|
req.Method = "MOVE";
|
|
req.Headers.Set("Destination", iocTo.Path); // Full URL supported
|
|
}
|
|
else if(req is FtpWebRequest)
|
|
{
|
|
req.Method = WebRequestMethods.Ftp.Rename;
|
|
string strTo = UrlUtil.GetFileName(iocTo.Path);
|
|
|
|
// We're affected by .NET bug 621450:
|
|
// https://connect.microsoft.com/VisualStudio/feedback/details/621450/problem-renaming-file-on-ftp-server-using-ftpwebrequest-in-net-framework-4-0-vs2010-only
|
|
// Prepending "./", "%2E/" or "Dummy/../" doesn't work.
|
|
|
|
((FtpWebRequest)req).RenameTo = strTo;
|
|
}
|
|
else if(req is FileWebRequest)
|
|
{
|
|
File.Move(UrlUtil.FileUrlToPath(iocFrom.Path),
|
|
UrlUtil.FileUrlToPath(iocTo.Path));
|
|
return;
|
|
}
|
|
else
|
|
{
|
|
req.Method = WrmMoveFile;
|
|
req.Headers.Set(WrhMoveFileTo, iocTo.Path);
|
|
}
|
|
|
|
DisposeResponse(req.GetResponse(), true);
|
|
}
|
|
#endif
|
|
|
|
// using(Stream sIn = IOConnection.OpenRead(iocFrom))
|
|
// {
|
|
// using(Stream sOut = IOConnection.OpenWrite(iocTo))
|
|
// {
|
|
// MemUtil.CopyStream(sIn, sOut);
|
|
// sOut.Close();
|
|
// }
|
|
//
|
|
// sIn.Close();
|
|
// }
|
|
// DeleteFile(iocFrom);
|
|
}
|
|
|
|
#if (!ModernKeePassLibPCL && !KeePassLibSD && !KeePassRT)
|
|
private static bool SendCommand(IOConnectionInfo ioc, string strMethod)
|
|
{
|
|
try
|
|
{
|
|
WebRequest req = CreateWebRequest(ioc);
|
|
req.Method = strMethod;
|
|
DisposeResponse(req.GetResponse(), true);
|
|
}
|
|
catch(Exception) { return false; }
|
|
|
|
return true;
|
|
}
|
|
#endif
|
|
#if !ModernKeePassLibPCL
|
|
internal static void DisposeResponse(WebResponse wr, bool bGetStream)
|
|
{
|
|
if(wr == null) return;
|
|
|
|
try
|
|
{
|
|
if(bGetStream)
|
|
{
|
|
Stream s = wr.GetResponseStream();
|
|
if(s != null) s.Dispose();
|
|
}
|
|
}
|
|
catch(Exception) { Debug.Assert(false); }
|
|
|
|
try { wr.Dispose(); }
|
|
catch(Exception) { Debug.Assert(false); }
|
|
}
|
|
#endif
|
|
public static async Task<byte[]> ReadFile(IOConnectionInfo ioc)
|
|
{
|
|
Stream sIn = null;
|
|
MemoryStream ms = null;
|
|
try
|
|
{
|
|
sIn = await OpenRead(ioc);
|
|
if(sIn == null) return null;
|
|
|
|
ms = new MemoryStream();
|
|
MemUtil.CopyStream(sIn, ms);
|
|
|
|
return ms.ToArray();
|
|
}
|
|
catch(Exception) { }
|
|
finally
|
|
{
|
|
if(sIn != null) sIn.Dispose();
|
|
if(ms != null) ms.Dispose();
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
private static void RaiseIOAccessPreEvent(IOConnectionInfo ioc, IOAccessType t)
|
|
{
|
|
RaiseIOAccessPreEvent(ioc, null, t);
|
|
}
|
|
|
|
private static void RaiseIOAccessPreEvent(IOConnectionInfo ioc,
|
|
IOConnectionInfo ioc2, IOAccessType t)
|
|
{
|
|
if(ioc == null) { Debug.Assert(false); return; }
|
|
// ioc2 may be null
|
|
|
|
if(IOConnection.IOAccessPre != null)
|
|
{
|
|
IOConnectionInfo ioc2Lcl = ((ioc2 != null) ? ioc2.CloneDeep() : null);
|
|
IOAccessEventArgs e = new IOAccessEventArgs(ioc.CloneDeep(), ioc2Lcl, t);
|
|
IOConnection.IOAccessPre(null, e);
|
|
}
|
|
}
|
|
}
|
|
}
|