690 lines
18 KiB
C#
690 lines
18 KiB
C#
/*
|
|
KeePass Password Safe - The Open-Source Password Manager
|
|
Copyright (C) 2003-2013 Dominik Reichl <dominik.reichl@t-online.de>
|
|
|
|
Modified to be used with Mono for Android. Changes Copyright (C) 2013 Philipp Crocoll
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.Text;
|
|
using System.IO;
|
|
using System.Net;
|
|
using System.Diagnostics;
|
|
|
|
#if (!KeePassLibSD && !KeePassRT)
|
|
using System.Net.Cache;
|
|
using System.Net.Security;
|
|
#endif
|
|
|
|
#if !KeePassRT
|
|
using System.Security.Cryptography.X509Certificates;
|
|
#endif
|
|
|
|
using KeePassLib.Native;
|
|
using KeePassLib.Utility;
|
|
using keepass2android;
|
|
|
|
namespace KeePassLib.Serialization
|
|
{
|
|
#if (!KeePassLibSD && !KeePassRT)
|
|
public sealed class IOWebClient : WebClient
|
|
{
|
|
protected override WebRequest GetWebRequest(Uri address)
|
|
{
|
|
WebRequest request = base.GetWebRequest(address);
|
|
IOConnection.ConfigureWebRequest(request);
|
|
return request;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
public static class IOConnection
|
|
{
|
|
#if (!KeePassLibSD && !KeePassRT)
|
|
private static ProxyServerType m_pstProxyType = ProxyServerType.System;
|
|
private static string m_strProxyAddr = string.Empty;
|
|
private static string m_strProxyPort = string.Empty;
|
|
private static string m_strProxyUserName = string.Empty;
|
|
private static string m_strProxyPassword = string.Empty;
|
|
|
|
private static bool m_bSslCertsAcceptInvalid = false;
|
|
internal static bool SslCertsAcceptInvalid
|
|
{
|
|
// get { return m_bSslCertsAcceptInvalid; }
|
|
set { m_bSslCertsAcceptInvalid = value; }
|
|
}
|
|
|
|
public static RemoteCertificateValidationCallback CertificateValidationCallback { get; set; }
|
|
#endif
|
|
|
|
// Web request methods
|
|
public const string WrmDeleteFile = "DELETEFILE";
|
|
public const string WrmMoveFile = "MOVEFILE";
|
|
|
|
// Web request headers
|
|
public const string WrhMoveFileTo = "MoveFileTo";
|
|
|
|
public static event EventHandler<IOAccessEventArgs> IOAccessPre;
|
|
|
|
#if (!KeePassLibSD && !KeePassRT)
|
|
// Allow self-signed certificates, expired certificates, etc.
|
|
private static bool AcceptCertificate(object sender,
|
|
X509Certificate certificate, X509Chain chain,
|
|
SslPolicyErrors sslPolicyErrors)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
internal static void SetProxy(ProxyServerType pst, string strAddr,
|
|
string strPort, string strUserName, string strPassword)
|
|
{
|
|
m_pstProxyType = pst;
|
|
m_strProxyAddr = (strAddr ?? string.Empty);
|
|
m_strProxyPort = (strPort ?? string.Empty);
|
|
m_strProxyUserName = (strUserName ?? string.Empty);
|
|
m_strProxyPassword = (strPassword ?? string.Empty);
|
|
}
|
|
|
|
internal static void ConfigureWebRequest(WebRequest request)
|
|
{
|
|
if(request == null) { Debug.Assert(false); return; } // No throw
|
|
|
|
// WebDAV support
|
|
if(request is HttpWebRequest)
|
|
{
|
|
request.PreAuthenticate = true; // Also auth GET
|
|
if(request.Method == WebRequestMethods.Http.Post)
|
|
request.Method = WebRequestMethods.Http.Put;
|
|
}
|
|
// else if(request is FtpWebRequest)
|
|
// {
|
|
// Debug.Assert(((FtpWebRequest)request).UsePassive);
|
|
// }
|
|
|
|
// Not implemented and ignored in Mono < 2.10
|
|
try
|
|
{
|
|
//deactivated. No longer supported in Mono 4.8?
|
|
//request.CachePolicy = new RequestCachePolicy(RequestCacheLevel.NoCacheNoStore);
|
|
}
|
|
catch(NotImplementedException) { }
|
|
catch(Exception) { Debug.Assert(false); }
|
|
|
|
try
|
|
{
|
|
IWebProxy prx;
|
|
if(GetWebProxy(out prx)) request.Proxy = prx;
|
|
}
|
|
catch(Exception) { Debug.Assert(false); }
|
|
}
|
|
|
|
internal static void ConfigureWebClient(WebClient wc)
|
|
{
|
|
|
|
try
|
|
{
|
|
IWebProxy prx;
|
|
if(GetWebProxy(out prx)) wc.Proxy = prx;
|
|
}
|
|
catch(Exception) { Debug.Assert(false); }
|
|
}
|
|
|
|
private static bool GetWebProxy(out IWebProxy prx)
|
|
{
|
|
prx = null;
|
|
|
|
if(m_pstProxyType == ProxyServerType.None)
|
|
return true; // Use null proxy
|
|
if(m_pstProxyType == ProxyServerType.Manual)
|
|
{
|
|
try
|
|
{
|
|
if(m_strProxyPort.Length > 0)
|
|
prx = new WebProxy(m_strProxyAddr, int.Parse(m_strProxyPort));
|
|
else prx = new WebProxy(m_strProxyAddr);
|
|
|
|
if((m_strProxyUserName.Length > 0) || (m_strProxyPassword.Length > 0))
|
|
prx.Credentials = new NetworkCredential(m_strProxyUserName,
|
|
m_strProxyPassword);
|
|
|
|
return true; // Use manual proxy
|
|
}
|
|
catch(Exception exProxy)
|
|
{
|
|
string strInfo = m_strProxyAddr;
|
|
if(m_strProxyPort.Length > 0) strInfo += ":" + m_strProxyPort;
|
|
MessageService.ShowWarning(strInfo, exProxy.Message);
|
|
}
|
|
|
|
return false; // Use default
|
|
}
|
|
|
|
if((m_strProxyUserName.Length == 0) && (m_strProxyPassword.Length == 0))
|
|
return false; // Use default proxy, no auth
|
|
|
|
try
|
|
{
|
|
prx = WebRequest.DefaultWebProxy;
|
|
if(prx == null) prx = WebRequest.GetSystemWebProxy();
|
|
if(prx == null) throw new InvalidOperationException();
|
|
|
|
prx.Credentials = new NetworkCredential(m_strProxyUserName,
|
|
m_strProxyPassword);
|
|
return true;
|
|
}
|
|
catch(Exception) { Debug.Assert(false); }
|
|
|
|
return false;
|
|
}
|
|
|
|
private static void PrepareWebAccess()
|
|
{
|
|
/*
|
|
ServicePointManager.ServerCertificateValidationCallback =
|
|
IOConnection.AcceptCertificate;*/
|
|
ServicePointManager.ServerCertificateValidationCallback = CertificateValidationCallback;
|
|
}
|
|
|
|
private static IOWebClient CreateWebClient(IOConnectionInfo ioc, bool digestAuth)
|
|
{
|
|
PrepareWebAccess();
|
|
|
|
IOWebClient wc = new IOWebClient();
|
|
ConfigureWebClient(wc);
|
|
|
|
if ((ioc.UserName.Length > 0) || (ioc.Password.Length > 0))
|
|
{
|
|
//set the credentials without a cache (in case the cache below fails:
|
|
|
|
//check for backslash to determine whether we need to specify the domain:
|
|
int backslashPos = ioc.UserName.IndexOf("\\", StringComparison.Ordinal);
|
|
if (backslashPos > 0)
|
|
{
|
|
string domain = ioc.UserName.Substring(0, backslashPos);
|
|
string user = ioc.UserName.Substring(backslashPos + 1);
|
|
wc.Credentials = new NetworkCredential(user, ioc.Password, domain);
|
|
}
|
|
else
|
|
{
|
|
wc.Credentials = new NetworkCredential(ioc.UserName, ioc.Password);
|
|
}
|
|
|
|
|
|
if (digestAuth)
|
|
{
|
|
//try to use the credential cache to access with Digest support:
|
|
try
|
|
{
|
|
var credentialCache = new CredentialCache();
|
|
|
|
credentialCache.Add(
|
|
new Uri(new Uri(ioc.Path).GetLeftPart(UriPartial.Authority)),
|
|
"Digest",
|
|
new NetworkCredential(ioc.UserName, ioc.Password)
|
|
);
|
|
|
|
credentialCache.Add(
|
|
new Uri(new Uri(ioc.Path).GetLeftPart(UriPartial.Authority)),
|
|
"NTLM",
|
|
new NetworkCredential(ioc.UserName, ioc.Password)
|
|
);
|
|
|
|
|
|
wc.Credentials = credentialCache;
|
|
} catch (NotImplementedException e)
|
|
{
|
|
Kp2aLog.Log(e.ToString());
|
|
} catch (Exception e)
|
|
{
|
|
Kp2aLog.Log(e.ToString());
|
|
Debug.Assert(false);
|
|
}
|
|
}
|
|
}
|
|
else if(NativeLib.IsUnix()) // Mono requires credentials
|
|
wc.Credentials = new NetworkCredential("anonymous", string.Empty);
|
|
|
|
return wc;
|
|
}
|
|
|
|
private static WebRequest CreateWebRequest(IOConnectionInfo ioc, bool digestAuth)
|
|
{
|
|
PrepareWebAccess();
|
|
|
|
WebRequest req = WebRequest.Create(ioc.Path);
|
|
ConfigureWebRequest(req);
|
|
|
|
if((ioc.UserName.Length > 0) || (ioc.Password.Length > 0))
|
|
{
|
|
req.Credentials = new NetworkCredential(ioc.UserName, ioc.Password);
|
|
|
|
if (digestAuth)
|
|
{
|
|
var credentialCache = new CredentialCache();
|
|
credentialCache.Add(
|
|
new Uri(new Uri(ioc.Path).GetLeftPart(UriPartial.Authority)), // request url's host
|
|
"Digest", // authentication type
|
|
new NetworkCredential(ioc.UserName, ioc.Password) // credentials
|
|
);
|
|
credentialCache.Add(
|
|
new Uri(new Uri(ioc.Path).GetLeftPart(UriPartial.Authority)), // request url's host
|
|
"NTLM", // authentication type
|
|
new NetworkCredential(ioc.UserName, ioc.Password) // credentials
|
|
);
|
|
|
|
req.Credentials = credentialCache;
|
|
}
|
|
}
|
|
else if(NativeLib.IsUnix()) // Mono requires credentials
|
|
req.Credentials = new NetworkCredential("anonymous", string.Empty);
|
|
|
|
return req;
|
|
}
|
|
|
|
public static Stream OpenRead(IOConnectionInfo ioc)
|
|
{
|
|
RaiseIOAccessPreEvent(ioc, IOAccessType.Read);
|
|
|
|
if(StrUtil.IsDataUri(ioc.Path))
|
|
{
|
|
byte[] pbData = StrUtil.DataUriToData(ioc.Path);
|
|
if (pbData != null)
|
|
return new MemoryStream(pbData, false);
|
|
}
|
|
|
|
if (ioc.IsLocalFile())
|
|
return OpenReadLocal(ioc);
|
|
|
|
try
|
|
{
|
|
return CreateWebClient(ioc, false).OpenRead(new Uri(ioc.Path));
|
|
} catch (WebException ex)
|
|
{
|
|
if ((ex.Response is HttpWebResponse) && (((HttpWebResponse)ex.Response).StatusCode == HttpStatusCode.Unauthorized))
|
|
return CreateWebClient(ioc, true).OpenRead(new Uri(ioc.Path));
|
|
else
|
|
throw;
|
|
}
|
|
|
|
}
|
|
#else
|
|
public static Stream OpenRead(IOConnectionInfo ioc)
|
|
{
|
|
RaiseIOAccessPreEvent(ioc, IOAccessType.Read);
|
|
|
|
return OpenReadLocal(ioc);
|
|
}
|
|
#endif
|
|
|
|
private static Stream OpenReadLocal(IOConnectionInfo ioc)
|
|
{
|
|
return new FileStream(ioc.Path, FileMode.Open, FileAccess.Read,
|
|
FileShare.Read);
|
|
}
|
|
|
|
#if (!KeePassLibSD && !KeePassRT)
|
|
|
|
class UploadOnCloseMemoryStream: MemoryStream
|
|
{
|
|
IOConnectionInfo ioc;
|
|
string method;
|
|
Uri destinationFilePath;
|
|
|
|
public UploadOnCloseMemoryStream(IOConnectionInfo _ioc, string _method, Uri _destinationFilePath)
|
|
{
|
|
ioc = _ioc;
|
|
this.method = _method;
|
|
this.destinationFilePath = _destinationFilePath;
|
|
}
|
|
|
|
public UploadOnCloseMemoryStream(IOConnectionInfo _ioc, Uri _destinationFilePath)
|
|
{
|
|
this.ioc = _ioc;
|
|
this.method = null;
|
|
this.destinationFilePath = _destinationFilePath;
|
|
}
|
|
|
|
public override void Close()
|
|
{
|
|
base.Close();
|
|
|
|
WebRequest testReq = WebRequest.Create(ioc.Path);
|
|
if (testReq is HttpWebRequest)
|
|
{
|
|
RepeatWithDigestOnFail(ioc, req =>
|
|
{
|
|
req.Headers.Add("Translate: f");
|
|
|
|
if (method != null)
|
|
req.Method = method;
|
|
var data = this.ToArray();
|
|
|
|
using (Stream s = req.GetRequestStream())
|
|
{
|
|
s.Write(data, 0, data.Length);
|
|
req.GetResponse();
|
|
s.Close();
|
|
}
|
|
});
|
|
}
|
|
else
|
|
{
|
|
try
|
|
{
|
|
uploadData(IOConnection.CreateWebClient(ioc, false));
|
|
}
|
|
catch (WebException ex)
|
|
{
|
|
//todo: does this make sense for FTP at all? Remove?
|
|
if ((ex.Response is HttpWebResponse) && (((HttpWebResponse)ex.Response).StatusCode == HttpStatusCode.Unauthorized))
|
|
uploadData(IOConnection.CreateWebClient(ioc, true));
|
|
else
|
|
throw;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
void uploadData(WebClient webClient)
|
|
{
|
|
if (method != null)
|
|
{
|
|
webClient.UploadData(destinationFilePath, method, this.ToArray());
|
|
}
|
|
else
|
|
{
|
|
webClient.UploadData(destinationFilePath, this.ToArray());
|
|
}
|
|
}
|
|
|
|
|
|
}
|
|
|
|
public static Stream OpenWrite(IOConnectionInfo ioc)
|
|
{
|
|
if(ioc == null) { Debug.Assert(false); return null; }
|
|
|
|
RaiseIOAccessPreEvent(ioc, IOAccessType.Write);
|
|
|
|
if(ioc.IsLocalFile()) return OpenWriteLocal(ioc);
|
|
|
|
Uri uri = new Uri(ioc.Path);
|
|
|
|
// Mono does not set HttpWebRequest.Method to POST for writes,
|
|
// so one needs to set the method to PUT explicitly
|
|
if(NativeLib.IsUnix() && (uri.Scheme.Equals(Uri.UriSchemeHttp,
|
|
StrUtil.CaseIgnoreCmp) || uri.Scheme.Equals(Uri.UriSchemeHttps,
|
|
StrUtil.CaseIgnoreCmp)))
|
|
return new UploadOnCloseMemoryStream(ioc, WebRequestMethods.Http.Put, uri);
|
|
|
|
return new UploadOnCloseMemoryStream(ioc, uri);
|
|
}
|
|
#else
|
|
public static Stream OpenWrite(IOConnectionInfo ioc)
|
|
{
|
|
RaiseIOAccessPreEvent(ioc, IOAccessType.Write);
|
|
|
|
return OpenWriteLocal(ioc);
|
|
}
|
|
#endif
|
|
|
|
private static Stream OpenWriteLocal(IOConnectionInfo ioc)
|
|
{
|
|
return new FileStream(ioc.Path, FileMode.Create, FileAccess.Write,
|
|
FileShare.None);
|
|
}
|
|
|
|
public static bool FileExists(IOConnectionInfo ioc)
|
|
{
|
|
return FileExists(ioc, false);
|
|
}
|
|
|
|
public static bool FileExists(IOConnectionInfo ioc, bool bThrowErrors)
|
|
{
|
|
if(ioc == null) { Debug.Assert(false); return false; }
|
|
|
|
RaiseIOAccessPreEvent(ioc, IOAccessType.Exists);
|
|
|
|
if(ioc.IsLocalFile()) return File.Exists(ioc.Path);
|
|
|
|
#if (!KeePassLibSD && !KeePassRT)
|
|
if(ioc.Path.StartsWith("ftp://", StrUtil.CaseIgnoreCmp))
|
|
{
|
|
bool b = SendCommand(ioc, WebRequestMethods.Ftp.GetDateTimestamp);
|
|
if(!b && bThrowErrors) throw new InvalidOperationException();
|
|
return b;
|
|
}
|
|
#endif
|
|
|
|
try
|
|
{
|
|
Stream s = OpenRead(ioc);
|
|
if(s == null) throw new Java.IO.FileNotFoundException();
|
|
|
|
try { s.ReadByte(); }
|
|
catch(Exception) { }
|
|
|
|
// We didn't download the file completely; close may throw
|
|
// an exception -- that's okay
|
|
try { s.Close(); }
|
|
catch(Exception) { }
|
|
}
|
|
catch(Exception)
|
|
{
|
|
if(bThrowErrors) throw;
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
delegate void DoWithRequest(WebRequest req);
|
|
|
|
|
|
static void RepeatWithDigestOnFail(IOConnectionInfo ioc, DoWithRequest f)
|
|
{
|
|
WebRequest req = CreateWebRequest(ioc, false);
|
|
try{
|
|
f(req);
|
|
}
|
|
catch (WebException ex)
|
|
{
|
|
if ((ex.Response is HttpWebResponse) && (((HttpWebResponse) ex.Response).StatusCode == HttpStatusCode.Unauthorized))
|
|
{
|
|
req = CreateWebRequest(ioc, true);
|
|
f(req);
|
|
}
|
|
else throw;
|
|
}
|
|
}
|
|
|
|
public static void DeleteFile(IOConnectionInfo ioc)
|
|
{
|
|
RaiseIOAccessPreEvent(ioc, IOAccessType.Delete);
|
|
|
|
if(ioc.IsLocalFile()) { File.Delete(ioc.Path); return; }
|
|
|
|
#if (!KeePassLibSD && !KeePassRT)
|
|
RepeatWithDigestOnFail(ioc, (WebRequest req) => {
|
|
if(req != null)
|
|
{
|
|
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 void RenameFile(IOConnectionInfo iocFrom, IOConnectionInfo iocTo)
|
|
{
|
|
RaiseIOAccessPreEvent(iocFrom, iocTo, IOAccessType.Move);
|
|
|
|
if(iocFrom.IsLocalFile()) { File.Move(iocFrom.Path, iocTo.Path); return; }
|
|
|
|
#if (!KeePassLibSD && !KeePassRT)
|
|
RepeatWithDigestOnFail(iocFrom, (WebRequest req)=> { 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 (!KeePassLibSD && !KeePassRT)
|
|
private static bool SendCommand(IOConnectionInfo ioc, string strMethod)
|
|
{
|
|
try
|
|
{
|
|
RepeatWithDigestOnFail(ioc, (WebRequest req)=> {
|
|
req.Method = strMethod;
|
|
DisposeResponse(req.GetResponse(), true);
|
|
|
|
});
|
|
}
|
|
catch(Exception) { return false; }
|
|
|
|
return true;
|
|
}
|
|
#endif
|
|
|
|
private static void DisposeResponse(WebResponse wr, bool bGetStream)
|
|
{
|
|
if(wr == null) return;
|
|
|
|
try
|
|
{
|
|
if(bGetStream)
|
|
{
|
|
Stream s = wr.GetResponseStream();
|
|
if(s != null) s.Close();
|
|
}
|
|
}
|
|
catch(Exception) { Debug.Assert(false); }
|
|
|
|
try { wr.Close(); }
|
|
catch(Exception) { Debug.Assert(false); }
|
|
}
|
|
|
|
public static byte[] ReadFile(IOConnectionInfo ioc)
|
|
{
|
|
Stream sIn = null;
|
|
MemoryStream ms = null;
|
|
try
|
|
{
|
|
sIn = IOConnection.OpenRead(ioc);
|
|
if (sIn == null) return null;
|
|
|
|
ms = new MemoryStream();
|
|
MemUtil.CopyStream(sIn, ms);
|
|
|
|
return ms.ToArray();
|
|
}
|
|
catch (Exception e)
|
|
{
|
|
Kp2aLog.Log("error opening file: " + e);
|
|
}
|
|
finally
|
|
{
|
|
if(sIn != null) sIn.Close();
|
|
if(ms != null) ms.Close();
|
|
}
|
|
|
|
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);
|
|
}
|
|
}
|
|
}
|
|
}
|