mirror of
https://github.com/xcp-ng/xenadmin.git
synced 2024-12-21 07:56:03 +01:00
b191cf5522
leftover from the time when the OVF wizards were a XenCenter plugin; the latter has now been removed). Signed-off-by: Konstantina Chremmou <konstantina.chremmou@citrix.com>
321 lines
13 KiB
C#
321 lines
13 KiB
C#
/* Copyright (c) Citrix Systems Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms,
|
|
* with or without modification, are permitted provided
|
|
* that the following conditions are met:
|
|
*
|
|
* * Redistributions of source code must retain the above
|
|
* copyright notice, this list of conditions and the
|
|
* following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above
|
|
* copyright notice, this list of conditions and the
|
|
* following disclaimer in the documentation and/or other
|
|
* materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
|
|
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
|
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
|
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
using System;
|
|
using System.IO;
|
|
using XenCenterLib.Compression;
|
|
using XenOvf.Definitions;
|
|
using XenOvf.Utilities;
|
|
|
|
namespace XenOvf
|
|
{
|
|
public class OvfCompressor
|
|
{
|
|
private static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
|
|
|
|
/// <summary>
|
|
/// Set to TRUE to Cancel current Compression process.
|
|
/// </summary>
|
|
public bool CancelCompression { get; set; }
|
|
|
|
/// <summary>
|
|
/// Check the Envelope to see if the files are compressed.
|
|
/// </summary>
|
|
/// <param name="ovfFilename">fullpath/filename to OVF</param>
|
|
/// <param name="method">out method used: Gzip | BZip2</param>
|
|
/// <returns>True|False</returns>
|
|
public bool IsCompressed(string ovfFilename, out string method)
|
|
{
|
|
EnvelopeType env = OVF.Load(ovfFilename);
|
|
return IsCompressed(env, out method);
|
|
}
|
|
/// <summary>
|
|
/// Check the Envelope to see if the files are compressed.
|
|
/// </summary>
|
|
/// <param name="env">EnvelopeType</param>
|
|
/// <param name="method">out method used: Gzip | BZip2</param>
|
|
/// <returns>True|False</returns>
|
|
public bool IsCompressed(EnvelopeType env, out string method)
|
|
{
|
|
if (env.References != null && env.References.File != null && env.References.File.Length > 0)
|
|
{
|
|
foreach (File_Type file in env.References.File)
|
|
{
|
|
if (!string.IsNullOrEmpty(file.compression))
|
|
{
|
|
method = file.compression;
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
method = "none";
|
|
return false;
|
|
}
|
|
/// <summary>
|
|
/// Open the OVF file and compress the uncompressed files.
|
|
/// </summary>
|
|
/// <param name="ovfFilename">pull path and filename.</param>
|
|
/// <param name="method">GZip | BZip2</param>
|
|
public void CompressOvfFiles(string ovfFilename, string method)
|
|
{
|
|
CompressOvfFiles(OVF.Load(ovfFilename), ovfFilename, method, true);
|
|
}
|
|
/// <summary>
|
|
///
|
|
/// </summary>
|
|
/// <param name="env"></param>
|
|
/// <param name="ovfilename"></param>
|
|
/// <param name="method"></param>
|
|
/// <param name="compress"></param>
|
|
public void CompressOvfFiles(EnvelopeType env, string ovfilename, string method, bool compress)
|
|
{
|
|
ProcessCompression(env, Path.GetDirectoryName(ovfilename), method, compress);
|
|
OVF.SaveAs(env, ovfilename);
|
|
}
|
|
/// <summary>
|
|
/// Open the OVF file and uncompress the compressed files.
|
|
/// </summary>
|
|
/// <param name="ovfFilename">pull path and filename.</param>
|
|
public void UncompressOvfFiles(string ovfFilename)
|
|
{
|
|
EnvelopeType env = OVF.Load(ovfFilename);
|
|
ProcessCompression(env, Path.GetDirectoryName(ovfFilename), null, false);
|
|
OVF.SaveAs(env, ovfFilename);
|
|
}
|
|
/// <summary>
|
|
/// Uncompress a stream
|
|
/// </summary>
|
|
/// <param name="inputstream">compressed stream</param>
|
|
/// <param name="method">GZip or Bzip2</param>
|
|
/// <returns>uncompressed stream</returns>
|
|
public CompressionStream UncompressFileStream(Stream inputstream, string method)
|
|
{
|
|
switch (method.ToLower())
|
|
{
|
|
case "gzip":
|
|
return CompressionFactory.Reader(CompressionFactory.Type.Gz, inputstream);
|
|
case "bzip2":
|
|
return CompressionFactory.Reader(CompressionFactory.Type.Bz2, inputstream);
|
|
}
|
|
throw new InvalidDataException(string.Format(Messages.COMPRESS_INVALID_METHOD, method));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Compress a Stream
|
|
/// </summary>
|
|
/// <param name="inputstream">Source Input</param>
|
|
/// <param name="method">GZip or BZip2</param>
|
|
/// <returns>compressed stream</returns>
|
|
public CompressionStream CompressFileStream(Stream inputstream, string method)
|
|
{
|
|
switch (method.ToLower())
|
|
{
|
|
case "gzip":
|
|
return CompressionFactory.Writer(CompressionFactory.Type.Gz, inputstream);
|
|
case "bzip2":
|
|
return CompressionFactory.Writer(CompressionFactory.Type.Bz2, inputstream);
|
|
}
|
|
throw new InvalidDataException(string.Format(Messages.COMPRESS_INVALID_METHOD, method));
|
|
}
|
|
|
|
/// <summary>
|
|
///
|
|
/// </summary>
|
|
/// <param name="inputfile"></param>
|
|
/// <param name="outputfile"></param>
|
|
/// <param name="method"></param>
|
|
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Security", "CA2122:DoNotIndirectlyExposeMethodsWithLinkDemands",
|
|
Justification = "Logging only usage")]
|
|
public void UncompressFile(string inputfile, string outputfile, string method)
|
|
{
|
|
if (method.ToLower() == "gzip")
|
|
{
|
|
Stream InStream = File.Open(inputfile, FileMode.Open, FileAccess.ReadWrite, FileShare.None);
|
|
Stream OutStream = File.Open(outputfile, FileMode.Create, FileAccess.ReadWrite, FileShare.None);
|
|
try
|
|
{
|
|
GZipDecompress(InStream, OutStream);
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
if (ex is OperationCanceledException)
|
|
throw;
|
|
log.WarnFormat("Uncompression issue: {0}", ex);
|
|
log.Warn("Previous warning may be ok, continuing with import, failures continue then this is the issue");
|
|
}
|
|
finally
|
|
{
|
|
InStream.Dispose();
|
|
OutStream.Flush();
|
|
OutStream.Dispose();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
throw new InvalidDataException(string.Format(Messages.COMPRESS_INVALID_METHOD, method));
|
|
}
|
|
}
|
|
|
|
|
|
#region PRIVATE
|
|
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Security", "CA2122:DoNotIndirectlyExposeMethodsWithLinkDemands",
|
|
Justification = "Logging only usage")]
|
|
private void ProcessCompression(EnvelopeType env, string path, string method, bool compress)
|
|
{
|
|
if (env.References != null && env.References.File != null && env.References.File.Length > 0)
|
|
{
|
|
foreach (File_Type file in env.References.File)
|
|
{
|
|
if (compress)
|
|
{
|
|
if (method.ToLower() != "gzip" && method.ToLower() != "bzip2")
|
|
throw new InvalidDataException(string.Format(Messages.COMPRESS_INVALID_METHOD, method));
|
|
}
|
|
else
|
|
{
|
|
if (file.compression == null)
|
|
{
|
|
log.InfoFormat("File {0} was not marked as compressed, skipped.", file.href);
|
|
continue;
|
|
}
|
|
if (file.compression.ToLower() != "gzip" && file.compression.ToLower() != "bzip2")
|
|
{
|
|
log.ErrorFormat("Invalid compression method File: {0} Method: {1}, must be Gzip or BZip2", file.href, file.compression);
|
|
continue;
|
|
}
|
|
|
|
method = file.compression;
|
|
}
|
|
|
|
int slash = file.href.LastIndexOf('/');
|
|
string filename = slash >= 0 ? file.href.Substring(slash + 1) : file.href;
|
|
|
|
filename = Path.Combine(path, filename);
|
|
|
|
string tempfile = Path.Combine(path, Path.GetFileName(Path.GetTempFileName()));
|
|
|
|
try
|
|
{
|
|
if (method.ToLower() == "gzip")
|
|
{
|
|
using(var inputFile = new FileStream(filename, FileMode.Open, FileAccess.ReadWrite, FileShare.None))
|
|
{
|
|
using (var outputFile = new FileStream(tempfile, FileMode.CreateNew, FileAccess.ReadWrite, FileShare.None))
|
|
{
|
|
if (compress)
|
|
GZipCompress(inputFile, outputFile);
|
|
else
|
|
GZipDecompress(inputFile, outputFile);
|
|
}
|
|
inputFile.Flush();
|
|
}
|
|
|
|
//the original file should be overwritten only if the process has succeeded, so it should
|
|
//be done here and not in the finally block, because if compression/decompression fails
|
|
//for some reason, the original file is lost
|
|
File.Delete(filename);
|
|
File.Move(tempfile, filename);
|
|
}
|
|
else
|
|
{
|
|
throw new InvalidDataException(string.Format(Messages.COMPRESS_INVALID_METHOD, method));
|
|
}
|
|
file.compression = compress ? method : null;
|
|
}
|
|
catch (EndOfStreamException eose)
|
|
{
|
|
log.ErrorFormat("End of Stream: {0}", eose.Message);
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
if (ex is OperationCanceledException)
|
|
throw;
|
|
var message = string.Format(Messages.COMPRESS_FAILED, filename);
|
|
log.ErrorFormat("{0} {1}", message, ex.Message);
|
|
throw new Exception(message, ex);
|
|
}
|
|
finally
|
|
{
|
|
//in case of failure or cancellation delete the temp file;
|
|
//in case of success it won't be there, but no exception is thrown
|
|
File.Delete(tempfile);
|
|
}
|
|
FileInfo fi = new FileInfo(filename);
|
|
file.size = (ulong)fi.Length;
|
|
}
|
|
}
|
|
}
|
|
|
|
private void GZipCompress(Stream inputStream, Stream outputStream)
|
|
{
|
|
if (inputStream == null || outputStream == null) { throw new ArgumentNullException(); }
|
|
CompressionStream bzos = CompressionFactory.Writer(CompressionFactory.Type.Gz, outputStream);
|
|
StreamCopy(inputStream, (CompressionStream)bzos);
|
|
bzos.Dispose();
|
|
}
|
|
|
|
private void GZipDecompress(Stream inputStream, Stream outputStream)
|
|
{
|
|
if (inputStream == null || outputStream == null) { throw new ArgumentNullException(); }
|
|
CompressionStream bzis = CompressionFactory.Reader(CompressionFactory.Type.Gz, inputStream);
|
|
StreamCopy((CompressionStream)bzis, outputStream);
|
|
outputStream.Flush();
|
|
bzis.Dispose();
|
|
}
|
|
|
|
/// <summary>
|
|
/// This code is similar to the one in XenOvf.Utilities.Tool.StreamCopy.
|
|
/// It's duplicated (almost duplicated, I removed the block clearing to improve performance) as part
|
|
/// of the fix to CA-54859 in order to avoid too large scale changes at a late stage of development.
|
|
/// </summary>
|
|
private void StreamCopy(Stream Input, Stream Output)
|
|
{
|
|
int bufsize = 2 * MB;
|
|
byte[] block = new byte[bufsize];
|
|
|
|
while (true)
|
|
{
|
|
int n = Input.Read(block, 0, block.Length);
|
|
if (n <= 0)
|
|
break;
|
|
Output.Write(block, 0, n);
|
|
|
|
if (CancelCompression)
|
|
throw new OperationCanceledException();
|
|
}
|
|
Output.Flush();
|
|
}
|
|
|
|
private const int KB = 1024;
|
|
private const int MB = (KB * 1024);
|
|
#endregion
|
|
}
|
|
} |