mirror of
https://github.com/xcp-ng/xenadmin.git
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bfc8141391
- Handle validation for OVF files with a name different from the containing OVA package. Other corrections to wrong validation logic. - Show validation warnings on a dialog that can be turned off. - Clean up extracted files after an OVA package has been imported. - Plus code refactoring and simplification. Signed-off-by: Konstantina Chremmou <konstantina.chremmou@citrix.com>
579 lines
26 KiB
C#
579 lines
26 KiB
C#
/* Copyright (c) Citrix Systems, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms,
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* with or without modification, are permitted provided
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* that the following conditions are met:
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*
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* * Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the
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* following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the
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* following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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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.Reflection;
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using System.Security.Permissions;
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using System.Text;
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using System.Xml;
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using System.Xml.Schema;
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using System.Xml.Serialization;
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using XenOvf.Definitions;
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namespace XenOvf.Utilities
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{
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/// <summary>
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/// Common TOOLS used within XenOvf.
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/// </summary>
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public static class Tools
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{
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private static readonly log4net.ILog log = log4net.LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
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private const long KB = 1024;
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private const long MB = (KB * 1024);
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private const long GB = (MB * 1024);
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#region MISC TOOLS
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/// <summary>
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/// Load default namespaces required to define OVF.
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/// Can be overriden in app.config: KnownNamespaces
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/// </summary>
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/// <returns>Collection: XmlSerializerNamespces</returns>
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[SecurityPermission(SecurityAction.LinkDemand)]
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public static XmlSerializerNamespaces LoadNamespaces()
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{
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string[] namespaces = Properties.Settings.Default.KnownNamespaces.Split(new char[] { ',' });
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XmlSerializerNamespaces ns;
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ns = new XmlSerializerNamespaces();
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foreach (string name in namespaces)
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{
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string[] sep = name.Split(new char[] { '=' });
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ns.Add(sep[0].Trim(), sep[1].Trim());
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}
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return ns;
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}
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/// <summary>
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/// Load a file into a string
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/// </summary>
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/// <param name="filename">fullpath/filename</param>
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/// <returns>string containing file contents</returns>
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[SecurityPermission(SecurityAction.LinkDemand)]
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public static string LoadFile(string filename)
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{
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using (var fs = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read))
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using (var sr = new StreamReader(fs))
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return sr.ReadToEnd();
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}
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#endregion
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#region SERIALIZATION TOOLS
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/// <summary>
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/// Create an object from a string given the type to deserialize as.
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/// </summary>
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/// <param name="xmlString">xml string content</param>
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/// <returns>an object of Type T</returns>
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[SecurityPermission(SecurityAction.LinkDemand)]
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public static T Deserialize<T>(string xmlString)
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{
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using (var ms = new MemoryStream())
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using (var sw = new StreamWriter(ms))
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{
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sw.Write(xmlString);
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sw.Flush();
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ms.Position = 0;
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using (var sr = new StreamReader(ms, true))
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{
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var xs = new XmlSerializer(typeof(T));
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return (T)xs.Deserialize(sr);
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}
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}
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}
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/// <summary>
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/// Transform an object into a xml string, adding in known namespaces.
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/// </summary>
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/// <param name="tbs">object To-Be-Serialized</param>
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/// <param name="objectType">Object T value</param>
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/// <param name="ns">Namespace definitions.</param>
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/// <returns>xml string</returns>
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[SecurityPermission(SecurityAction.LinkDemand)]
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public static string Serialize(object tbs, Type objectType, XmlSerializerNamespaces ns = null)
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{
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using (var ms = new MemoryStream())
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using (var writer = new XmlTextWriter(ms, Encoding.Unicode))
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{
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var xs = new XmlSerializer(objectType);
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if (ns != null)
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xs.Serialize(writer, tbs, ns);
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else
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xs.Serialize(writer, tbs);
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ms.Position = 0;
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using (var sr = new StreamReader(ms, true))
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return sr.ReadToEnd();
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}
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}
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#endregion
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#region OVA.XML TOOLS
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/// <summary>
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/// This deserializes the OVA.XML File. The issue here is the form of the XML,
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/// Though it is valid XML generic parsing tools cannot handle the same element name
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/// in embedded elements (value in this case, it is the 'root' plus a member of member)
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/// with out the use of name spaces, also the 'value' field can take on one of 3 different
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/// formats:
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/// 1. text (string)
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/// 2. struct
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/// 3. array
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/// Therefore the deserializer will need some help in the processing. The first pass will
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/// give the basic form up to the points of ambiquity, then we can take the xml nodes in their
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/// current context and provide further deserialization.
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/// </summary>
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/// <param name="filename">pathto\\ova.xml</param>
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/// <returns>XenXva Data Structure</returns>
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[SecurityPermission(SecurityAction.LinkDemand)]
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internal static XenXva LoadOvaXml(string filename)
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{
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return DeserializeOvaXml(LoadFile(filename));
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}
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/// <summary>
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/// Load an old style OVA.XML file (version 0.1)
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/// </summary>
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/// <param name="filename">fullpath/filename</param>
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/// <returns>object of type XcAppliance</returns>
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[SecurityPermission(SecurityAction.LinkDemand)]
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internal static XcAppliance LoadOldOvaXml(string filename)
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{
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return Deserialize<XcAppliance>(LoadFile(filename));
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}
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/// <summary>
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/// Load an OVF xml File and convert to an EnvelopeType
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/// </summary>
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/// <param name="filename">fullpath/filename</param>
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/// <returns>object EnvelopeType or NULL</returns>
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[SecurityPermission(SecurityAction.LinkDemand)]
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internal static EnvelopeType LoadOvfXml(string appliancePath)
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{
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string ovfFilePath = appliancePath;
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string extension = Path.GetExtension(appliancePath);
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if ((String.Compare(extension, ".gz", true) == 0) ||
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(String.Compare(extension, ".bz2", true) == 0) ||
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(String.Compare(extension, ".ova", true) == 0) ||
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(String.Compare(extension, ".tar", true) == 0))
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{
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// Extract the contents of the archive.
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OVF.ExtractArchive(appliancePath);
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// Get the OVF name from within the archive because it may not share the base name of the archive.
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Package package = Package.Create(appliancePath);
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string ovfFileName = package.DescriptorFileName;
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if (string.IsNullOrEmpty(ovfFileName))
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{
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// An OVF file was not found.
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// Default to the base file name of the archive.
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// Remove the last extension that could be .gz, .bz2, .ova, or .tar.
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ovfFileName = Path.GetFileNameWithoutExtension(appliancePath);
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extension = Path.GetFileNameWithoutExtension(ovfFileName);
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if ((String.Compare(extension, ".ova", true) == 0) ||
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(String.Compare(extension, ".tar", true) == 0))
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{
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// Remove the second to last extension that could be ..ova, or .tar.
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ovfFileName = Path.GetFileNameWithoutExtension(ovfFileName);
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}
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// Add the .ovf extension.
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ovfFileName = ovfFileName + Properties.Settings.Default.ovfFileExtension;
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}
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string directory = Path.GetDirectoryName(appliancePath);
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ovfFilePath = Path.Combine(directory, ovfFileName);
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}
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if (!File.Exists(ovfFilePath))
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{
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log.ErrorFormat("Utilities.LoadOvfXml: File not found: {0}", ovfFilePath);
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throw new FileNotFoundException(string.Format(Messages.FILE_MISSING, ovfFilePath));
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}
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return DeserializeOvfXml(LoadFile(ovfFilePath));
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}
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[SecurityPermission(SecurityAction.LinkDemand)]
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public static EnvelopeType DeserializeOvfXml(string ovfxml)
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{
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EnvelopeType ovfEnv = null;
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try
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{
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ovfEnv = Deserialize<EnvelopeType>(ovfxml);
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}
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catch (Exception ex)
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{
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log.Info("Attempt reading xml failed.", ex);
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}
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bool isVmware = false;
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if (ovfEnv != null && ovfEnv.AnyAttr != null)
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{
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foreach (XmlAttribute xa in ovfEnv.AnyAttr)
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{
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if (xa.Prefix.ToLower().Equals(Properties.Settings.Default.vmwNamespacePrefix) ||
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xa.NamespaceURI.Equals(Properties.Settings.Default.vmwNameSpace) ||
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xa.Prefix.ToLower() == Properties.Settings.Default.VMwareNamespacePrefix ||
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xa.NamespaceURI == Properties.Settings.Default.VMwareNamespace)
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{
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isVmware = true;
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break;
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}
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}
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//always call the vc4 conversion; even if the ovf is newer the
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//replacements in the method (if they happen) are harmless
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//and the only cost is the re-deserialization of the xml
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if (isVmware)
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ovfEnv = LoadVmw40OvfXml(ovfxml);
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}
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if (ovfEnv == null)
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{
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ovfEnv = LoadVmw35OvfXml(ovfxml);
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log.Error("Last Change Convert died.");
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}
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return ovfEnv;
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}
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/// <exception>Thrown if invalid OVF xml</exception>
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[SecurityPermission(SecurityAction.LinkDemand)]
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public static void ValidateXmlToSchema(string ovfContent)
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{
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string currentPath = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
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string xmlNamespaceSchemaFilename = Path.Combine(currentPath, Properties.Settings.Default.xmlNamespaceSchemaLocation);
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string cimCommonSchemaFilename = Path.Combine(currentPath, Properties.Settings.Default.cimCommonSchemaLocation);
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string cimRASDSchemaFilename = Path.Combine(currentPath, Properties.Settings.Default.cimRASDSchemaLocation);
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string cimVSSDSchemaFilename = Path.Combine(currentPath, Properties.Settings.Default.cimVSSDSchemaLocation);
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string ovfSchemaFilename = Path.Combine(currentPath, Properties.Settings.Default.ovfEnvelopeSchemaLocation);
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string wsseSchemaFilename = Path.Combine(currentPath, Properties.Settings.Default.wsseSchemaLocation);
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string xencSchemaFilename = Path.Combine(currentPath, Properties.Settings.Default.xencSchemaLocation);
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string wsuSchemaFilename = Path.Combine(currentPath, Properties.Settings.Default.wsuSchemaLocation);
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string xmldsigSchemaFilename = Path.Combine(currentPath, Properties.Settings.Default.xmldsigSchemaLocation);
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var settings = new XmlReaderSettings
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{
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DtdProcessing = DtdProcessing.Parse,
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ValidationType = ValidationType.Schema
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};
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bool useOnlineSchema = Convert.ToBoolean(Properties.Settings.Default.useOnlineSchema);
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if (useOnlineSchema)
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{
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settings.Schemas.Add(null, Properties.Settings.Default.dsp8023OnlineSchema);
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}
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else
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{
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settings.Schemas.Add("http://www.w3.org/XML/1998/namespace", xmlNamespaceSchemaFilename);
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settings.Schemas.Add("http://schemas.dmtf.org/wbem/wscim/1/common", cimCommonSchemaFilename);
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settings.Schemas.Add("http://schemas.dmtf.org/wbem/wscim/1/cim-schema/2/CIM_VirtualSystemSettingData", cimVSSDSchemaFilename);
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settings.Schemas.Add("http://schemas.dmtf.org/wbem/wscim/1/cim-schema/2/CIM_ResourceAllocationSettingData", cimRASDSchemaFilename);
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settings.Schemas.Add("http://schemas.dmtf.org/ovf/envelope/1", ovfSchemaFilename);
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settings.Schemas.Add("http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd", wsseSchemaFilename);
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settings.Schemas.Add("http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd", wsuSchemaFilename);
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//settings.Schemas.Add("http://www.w3.org/2001/04/xmlenc#", xencSchemaFilename);
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//settings.Schemas.Add("http://www.w3.org/2000/09/xmldsig#", xmldsigSchemaFilename);
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}
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using (var xmlStream = new StringReader(ovfContent))
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using (var reader = XmlReader.Create(xmlStream, settings))
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while (reader.Read())
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{ }
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}
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/// <summary>
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/// Attempt to validate an object's property to ensure it is not null and contains a value
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/// uses reflection into the provided object to find the named property.
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/// </summary>
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/// <param name="name">Name of property to test</param>
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/// <param name="target">object containing property</param>
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/// <returns>true: appears valid, false: something failed</returns>
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[SecurityPermission(SecurityAction.LinkDemand)]
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public static bool ValidateProperty(string name, object target)
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{
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bool isValid = true;
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PropertyInfo[] properties = target.GetType().GetProperties();
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foreach (PropertyInfo property in properties)
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{
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if (property.Name.Equals(name))
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{
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object outervalue = property.GetValue(target, null);
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if (outervalue != null)
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{
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if (outervalue is cimString[])
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{
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cimString[] strvalue = (cimString[])property.GetValue(target, null);
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if (!(strvalue != null &&
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strvalue.Length > 0 &&
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strvalue[0] != null &&
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!string.IsNullOrEmpty(strvalue[0].Value)))
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{
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isValid = false;
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}
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}
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else if (outervalue is Msg_Type[])
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{
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Msg_Type[] msgtype = (Msg_Type[])property.GetValue(target, null);
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if (!(msgtype != null &&
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msgtype.Length > 0 &&
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msgtype[0] != null &&
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!string.IsNullOrEmpty(msgtype[0].Value)))
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{
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isValid = false;
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}
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}
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else if (!outervalue.GetType().IsPrimitive)
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{
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// The purpose of this code is still unclear.
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// It seems meant to handle complex types like XenOvf.Definitions.CimString.
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object innervalue = property.GetValue(target, null);
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Type innertype = innervalue.GetType();
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PropertyInfo innerproperty = innertype.GetProperty("Value");
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object targetvalue = null;
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if (innerproperty == null)
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{
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// There is no property.
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// The outertype is likely a standard .Net type like String and not an alias for a type like XenOvf.Definitions.CimString.
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// A case that causes a failure is when the target type is XenOvfEnvelope and the property name is "Name".
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targetvalue = innervalue;
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}
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else
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{
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// The outertype is alias for a type like XenOvf.Definitions.CimString.
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targetvalue = innerproperty.GetValue(outervalue, null);
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}
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if (targetvalue != null)
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{
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if (targetvalue is string)
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{
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if (((string)targetvalue).Length <= 0)
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{
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isValid = false;
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}
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}
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}
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else
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{
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isValid = false;
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}
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}
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}
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else
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{
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isValid = false;
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}
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}
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}
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return isValid;
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}
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/// <summary>
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/// create an XenXva object give the OVA.XML version 2 string.
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/// </summary>
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/// <param name="ovaxml">xml string</param>
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/// <returns>XenXva object</returns>
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[SecurityPermission(SecurityAction.LinkDemand)]
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public static XenXva DeserializeOvaXml(string ovaxml)
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{
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XenXva xenobj = Deserialize<XenXva>(ovaxml);
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xenobj.xenstruct.xenmember = DeserializeXenMembers(xenobj.xenstruct.xenmember);
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return xenobj;
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}
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#endregion
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#region STREAM
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public static bool CancelStreamCopy = false;
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public static void StreamCopy(Stream Input, Stream Output)
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{
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long bufsize = 2 * MB;
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byte[] block = new byte[bufsize];
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ulong p = 0;
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int n = 0;
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while (true)
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{
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n = Input.Read(block, 0, block.Length);
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if (n <= 0) break;
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Output.Write(block, 0, n);
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p += (ulong)n;
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if (CancelStreamCopy) break;
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ClearBuffer(block);
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}
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Output.Flush();
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CancelStreamCopy = false; // Reset so next call will start.
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}
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private static void ClearBuffer(byte[] block)
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{
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for (int i = 0; i < block.Length; i++) block[i] = 0;
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}
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#endregion
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private static EnvelopeType LoadVmw40OvfXml(string ovfxml)
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{
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if (string.IsNullOrEmpty(ovfxml))
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return null;
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// With what VMWare currently publishes with VC4, we need to update the XML
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ovfxml = ovfxml.Replace("<References", "<ovf:References").Replace("</References", "</ovf:References")
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.Replace("<Section", "<ovf:Section").Replace("</Section", "</ovf:Section")
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.Replace("<Content", "<ovf:Content").Replace("</Content", "</ovf:Content")
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.Replace("<File", "<ovf:File").Replace("</File", "</ovf:File")
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.Replace("<Disk", "<ovf:Disk").Replace("</Disk", "</ovf:Disk")
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.Replace("<Info", "<ovf:Info").Replace("</Info", "</ovf:Info")
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.Replace("<Network", "<ovf:Network").Replace("</Network", "</ovf:Network")
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.Replace("<Description", "<ovf:Description").Replace("</Description", "</ovf:Description")
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.Replace("<License", "<ovf:License").Replace("</License", "</ovf:License")
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.Replace("<System", "<ovf:System").Replace("</System", "</ovf:System")
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.Replace("<rasd:InstanceId", "<rasd:InstanceID").Replace("</rasd:InstanceId", "</rasd:InstanceID")
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.Replace("<Item", "<ovf:Item").Replace("</Item", "</ovf:Item");
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EnvelopeType ovfEnv = Deserialize<EnvelopeType>(ovfxml);
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log.Debug("Finished LoadVmw40OvfXml");
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return ovfEnv;
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}
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private static EnvelopeType LoadVmw35OvfXml(string ovfxml)
|
|
{
|
|
if (string.IsNullOrEmpty(ovfxml))
|
|
return null;
|
|
|
|
// With what VMWare currently publishes with VC35, we need to update the XML
|
|
|
|
ovfxml = ovfxml.Replace(Properties.Settings.Default.vmwEnvelopeNamespace, Properties.Settings.Default.cimEnvelopeURI)
|
|
.Replace("<References", "<ovf:References").Replace("</References", "</ovf:References")
|
|
.Replace("<Section", "<ovf:Section").Replace("</Section", "</ovf:Section")
|
|
.Replace("<Content", "<ovf:Content").Replace("</Content", "</ovf:Content")
|
|
.Replace("<File", "<ovf:File").Replace("</File", "</ovf:File")
|
|
.Replace("<Disk", "<ovf:Disk").Replace("</Disk", "</ovf:Disk")
|
|
.Replace("<Info", "<ovf:Info").Replace("</Info", "</ovf:Info")
|
|
.Replace("<Network", "<ovf:Network").Replace("</Network", "</ovf:Network")
|
|
.Replace("<Description", "<ovf:Description").Replace("</Description", "</ovf:Description")
|
|
.Replace("<License", "<ovf:License").Replace("</License", "</ovf:License")
|
|
.Replace("<System", "<ovf:System").Replace("</System", "</ovf:System")
|
|
.Replace("<rasd:InstanceId", "<rasd:InstanceID").Replace("</rasd:InstanceId", "</rasd:InstanceID")
|
|
.Replace("<Item", "<ovf:Item").Replace("</Item", "</ovf:Item");
|
|
|
|
EnvelopeType ovfEnv = Deserialize<EnvelopeType>(ovfxml);
|
|
log.Debug("Finished LoadVmw35OvfXml");
|
|
return ovfEnv;
|
|
}
|
|
|
|
private static XenMember[] DeserializeXenMembers(XenMember[] members)
|
|
{
|
|
foreach (XenMember xm in members)
|
|
{
|
|
if (xm.xenvalue is XmlNode[])
|
|
{
|
|
foreach (XmlNode xn in (XmlNode[])xm.xenvalue)
|
|
{
|
|
xm.xenvalue = DeserializeContent(xn);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
xm.xenvalue = "";
|
|
}
|
|
}
|
|
return members;
|
|
}
|
|
|
|
private static object DeserializeContent(XmlNode node)
|
|
{
|
|
object xenobj = null;
|
|
if (node.NodeType == XmlNodeType.Element && node.Name.ToLower().Equals("struct"))
|
|
{
|
|
xenobj = Tools.Deserialize<XenStruct>(node.OuterXml);
|
|
XenStruct xs = (XenStruct)xenobj;
|
|
if (xs.xenmember != null && xs.xenmember.Length > 0)
|
|
{
|
|
DeserializeXenMembers(xs.xenmember);
|
|
}
|
|
}
|
|
else if (node.NodeType == XmlNodeType.Element && node.Name.ToLower().Equals("data"))
|
|
{
|
|
xenobj = Tools.Deserialize<XenData>(node.OuterXml);
|
|
}
|
|
else if (node.NodeType == XmlNodeType.Element && node.Name.ToLower().Equals("array"))
|
|
{
|
|
xenobj = Tools.Deserialize<XenArray>(node.OuterXml);
|
|
XenArray xa = (XenArray)xenobj;
|
|
if (xa.xendata.xenvalue != null && xa.xendata.xenvalue[0] is XmlNode[])
|
|
{
|
|
List<object> values = new List<object>();
|
|
for (int i = 0; i < xa.xendata.xenvalue.Length; i++ )
|
|
{
|
|
values.Add(DeserializeContent((XmlNode)((XmlNode[])xa.xendata.xenvalue[i])[0]));
|
|
}
|
|
xa.xendata.xenvalue = values.ToArray();
|
|
}
|
|
else if (xa.xendata != null && xa.xendata.xenvalue != null && xa.xendata.xenvalue.Length > 0)
|
|
{
|
|
foreach (XenValue xv in xa.xendata.xenvalue)
|
|
{
|
|
if (xv.xenstruct != null)
|
|
{
|
|
DeserializeXenMembers(xv.xenstruct.xenmember);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
xa.xendata.xenvalue = null;
|
|
}
|
|
}
|
|
else if (node.NodeType == XmlNodeType.Text )
|
|
{
|
|
xenobj = node.Value;
|
|
}
|
|
|
|
return xenobj;
|
|
}
|
|
}
|
|
}
|