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427 lines
15 KiB
C#
427 lines
15 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.Net;
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using System.Reflection;
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using System.Text;
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using System.Xml;
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using Citrix.XenCenter;
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using XenAdmin.Core;
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namespace XenAdmin.XenSearch
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{
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public class SearchMarshalling
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{
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private static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
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private const int CURRENT_SEARCH_MAJOR_VERSION = 2;
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private const int CURRENT_SEARCH_MINOR_VERSION = 0;
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private const String xmlns = "http://www.citrix.com/XenCenter/XenSearch/schema";
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private static Dictionary<String, Type> subclasses = new Dictionary<String, Type>();
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static SearchMarshalling()
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{
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subclasses["Query"] = typeof(Query);
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foreach (Type t in Assembly.GetAssembly(typeof(QueryFilter)).GetTypes())
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{
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if (t.IsSubclassOf(typeof(QueryFilter)) && !t.IsAbstract)
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subclasses[GetClassName(t)] = t;
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}
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foreach (Type t in Assembly.GetAssembly(typeof(Grouping)).GetTypes())
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{
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if (t.IsSubclassOf(typeof(Grouping)) && !t.IsAbstract)
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subclasses[GetClassName(t)] = t;
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}
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}
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internal static String GetClassName(object o)
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{
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return GetClassName(o.GetType());
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}
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private static String GetClassName(Type type)
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{
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return type.Name.Split(new char[] { '`' })[0];
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}
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private static Type GetType(XmlNode node)
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{
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Type type;
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if (subclasses.ContainsKey(node.Name))
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type = subclasses[node.Name];
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else
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type = Type.GetType(node.Name, true);
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if(!type.IsGenericType)
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return type;
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Type genericType = PropertyAccessors.GetType(GetPropertyNames(node));
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return type.MakeGenericType(genericType);
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}
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private static PropertyNames GetPropertyNames(XmlNode node)
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{
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return (PropertyNames)Enum.Parse(typeof(PropertyNames), node.Attributes["property"].Value);
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}
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public static Object FromXmlNode(XmlNode node)
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{
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try
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{
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Type type = GetType(node);
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if (type == null)
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return null;
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ConstructorInfo ci = type.GetConstructor(new Type[] { typeof(XmlNode) });
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return ci.Invoke(new Object[] { node });
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}
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catch (TargetInvocationException e)
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{
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log.ErrorFormat("Error unmarshalling object. Xml was: {0}", node.OuterXml);
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log.Error(e, e);
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throw e.InnerException;
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}
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catch (Exception e)
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{
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log.ErrorFormat("Error unmarshalling object. Xml was: {0}", node.OuterXml);
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log.Error(e, e);
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throw;
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}
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}
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internal static List<Search> LoadSearches(String xml)
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{
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try
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{
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List<Search> result = new List<Search>();
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XmlDocument doc = new XmlDocument();
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doc.XmlResolver = new BasicXMLResolver();
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doc.LoadXml(xml);
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foreach (XmlNode search in doc.GetElementsByTagName("Search"))
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{
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result.Add(LoadSearch(search));
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}
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// Just for backwards compat.
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foreach (XmlNode search in doc.GetElementsByTagName("search"))
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{
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result.Add(LoadSearch(search));
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}
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return result;
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}
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catch (Exception e)
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{
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log.DebugFormat("Exception parsing xml '{0}'", xml.Substring(0, 10000));
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log.Debug(e, e);
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return null;
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}
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}
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public static Search LoadSearch(String xml)
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{
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// The string "null" is the default in Orlando (inadvertently, I think).
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if (xml == null || xml == "null")
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return null;
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try
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{
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XmlDocument doc = new XmlDocument();
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doc.XmlResolver = new BasicXMLResolver();
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doc.LoadXml(xml);
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return LoadSearch(doc.FirstChild);
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}
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catch (Exception e)
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{
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log.DebugFormat("Exception parsing xml '{0}'", xml);
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log.Debug(e, e);
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return null;
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}
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}
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public class SearchVersionException : Exception
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{
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int majorVersion, currentMajor;
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public SearchVersionException(int majorVersion, int currentMajor)
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{
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this.majorVersion = majorVersion;
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this.currentMajor = currentMajor;
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}
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public override string Message
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{
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get
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{
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return String.Format("SearchVersionException: a search version {0} was loaded. Max allowed is {1}",
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majorVersion, currentMajor);
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}
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}
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}
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public static Search LoadSearch(XmlNode node)
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{
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String uuid = Helpers.GetXmlAttribute(node, "uuid");
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String name = Helpers.GetXmlAttribute(node, "name");
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int major_version = int.Parse(Helpers.GetXmlAttribute(node, "major_version"));
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//int minor_version = int.Parse(Helpers.GetXmlAttribute(node, "minor_version"));
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XmlAttribute expanded = node.Attributes["show_expanded"];
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if (expanded == null)
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{
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// Backwards compat.
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expanded = node.Attributes["showsearch"];
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}
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bool showQuery = expanded == null ? false : ParseBool(expanded.Value);
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if (major_version > CURRENT_SEARCH_MAJOR_VERSION)
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throw new SearchVersionException(major_version, CURRENT_SEARCH_MAJOR_VERSION);
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Query query;
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Object q = FromXmlNode(node.ChildNodes[0]);
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switch (major_version)
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{
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case 0:
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case 1:
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QueryFilter filter = q as QueryFilter;
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if (filter == null)
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throw new I18NException(I18NExceptionType.XmlInvalid, node.OuterXml);
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query = new Query(null, filter);
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break;
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default:
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query = q as Query;
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if (query == null || query.QueryScope == null) // query.QueryFilter == null is allowed
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throw new I18NException(I18NExceptionType.XmlInvalid, node.OuterXml);
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break;
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}
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Grouping grouping = null;
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Sort[] sorting = new Sort[] { };
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List<KeyValuePair<String, int>> columns = null;
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int i = 0;
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foreach (XmlNode child in node.ChildNodes)
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{
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if (i != 0)
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{
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if (child.Name == "columns")
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{
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columns = LoadColumns(child);
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}
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else if (child.Name == "sorting")
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{
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sorting = LoadSorting(child);
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}
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else
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{
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grouping = (Grouping)FromXmlNode(child);
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}
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}
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i++;
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}
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return new Search(query, grouping, showQuery, name, uuid, columns, sorting);
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}
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private static List<KeyValuePair<string, int>> LoadColumns(XmlNode columnsNode)
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{
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List<KeyValuePair<string, int>> columns = new List<KeyValuePair<string, int>>();
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foreach (XmlNode node in columnsNode.ChildNodes)
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{
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String name = node.Attributes["name"].Value;
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if (name == "state") // the "state" column no longer exists (CA-25116)
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continue;
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int width;
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if (!Int32.TryParse(node.Attributes["width"].Value, out width))
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continue;
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columns.Add(new KeyValuePair<String, int>(name, Math.Abs(width)));
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}
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return columns;
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}
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private static Sort[] LoadSorting(XmlNode sortingNode)
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{
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Sort[] sorting = new Sort[sortingNode.ChildNodes.Count];
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int i = 0;
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foreach (XmlNode childNode in sortingNode.ChildNodes)
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sorting[i++] = new Sort(childNode);
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return sorting;
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}
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internal static string SearchesToXML(List<Search> searches)
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{
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XmlDocument document = new XmlDocument();
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document.XmlResolver = new BasicXMLResolver();
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document.AppendChild(document.CreateXmlDeclaration("1.0", Encoding.UTF8.WebName, null));
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document.AppendChild(document.CreateDocumentType("XenSearch", "-//XENSEARCH//DTD XENSEARCH 1//EN", "XenSearch-1.dtd", null));
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XmlNode node = document.CreateElement("Searches");
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AddAttribute(document, node, "xmlns", xmlns);
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document.AppendChild(node);
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foreach (Search s in searches)
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{
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node.AppendChild(SearchToXMLNode(document, s));
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}
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StringWriter sw = new StringWriter();
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XmlTextWriter w = new XmlTextWriter(sw);
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try
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{
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w.Formatting = Formatting.Indented;
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w.Indentation = 4;
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w.IndentChar = ' ';
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document.WriteTo(w);
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w.Flush();
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return sw.ToString();
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}
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finally
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{
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w.Close();
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sw.Close();
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}
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}
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internal static string SearchToXML(Search search)
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{
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XmlDocument document = new XmlDocument();
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XmlNode node = SearchToXMLNode(document, search);
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return node.OuterXml;
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}
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private static XmlNode SearchToXMLNode(XmlDocument document, Search search)
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{
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XmlNode node = document.CreateElement("Search");
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AddAttribute(document, node, "uuid", search.UUID);
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AddAttribute(document, node, "name", search.Name);
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AddAttribute(document, node, "major_version", CURRENT_SEARCH_MAJOR_VERSION);
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AddAttribute(document, node, "minor_version", CURRENT_SEARCH_MINOR_VERSION);
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if (search.ShowSearch)
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AddAttribute(document, node, "show_expanded", true);
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node.AppendChild(search.Query.ToXmlNode(document));
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if (search.Grouping != null)
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node.AppendChild(search.Grouping.ToXmlNode(document));
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XmlNode columnsNode = GetColumnXML(document, search);
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if (columnsNode != null)
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node.AppendChild(columnsNode);
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XmlNode sortingNode = GetSortingXML(document, search);
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if (sortingNode != null)
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node.AppendChild(sortingNode);
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return node;
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}
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private static XmlNode GetColumnXML(XmlDocument doc, Search search)
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{
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if (search.Columns == null)
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return null;
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XmlNode columnsNode = doc.CreateElement("columns");
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foreach (KeyValuePair<String, int> kvp in search.Columns)
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{
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XmlNode columnNode = doc.CreateElement("column");
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AddAttribute(doc, columnNode, "name", kvp.Key);
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AddAttribute(doc, columnNode, "width", kvp.Value.ToString());
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columnsNode.AppendChild(columnNode);
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}
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return columnsNode;
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}
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private static XmlNode GetSortingXML(XmlDocument doc, Search search)
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{
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XmlNode columnsNode = doc.CreateElement("sorting");
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foreach (Sort sort in search.Sorting)
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columnsNode.AppendChild(sort.ToXmlNode(doc));
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return columnsNode;
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}
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internal static void AddAttribute(XmlDocument document, XmlNode node, string n, string v)
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{
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XmlAttribute attr = document.CreateAttribute(n);
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attr.Value = v;
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node.Attributes.Append(attr);
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}
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internal static void AddAttribute(XmlDocument document, XmlNode node, string n, int v)
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{
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AddAttribute(document, node, n, v.ToString());
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}
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internal static void AddAttribute(XmlDocument document, XmlNode node, string n, bool v)
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{
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AddAttribute(document, node, n, v ? "yes" : "no");
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}
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internal static bool ParseBool(string v)
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{
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// "True" is just for backwards compat.
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return v == "yes" || v == "True" ? true : false;
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}
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}
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}
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