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//
// (C) 2005 Mainsoft Corporation (http://www.mainsoft.com)
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Xml;
using System.IO;
using System.Collections;
using System.Web.Compilation;
using System.Collections.Specialized;
using System.Threading;
using vmw.common;
namespace System.Web.J2EE
{
/// <summary>
/// Class that allows reading assemblies.xml file for getting information about different types.
/// </summary>
public class PageMapper
{
private static readonly string _fileListName = "/filelist.xml";
private static readonly object LOCK_GETASSEMBLIESCACHEDDOCUMENT = new object();
private static readonly object LOCK_GETFROMMAPPATHCACHE = new object();
public static string GetFromMapPathCache(string key)
{
Hashtable answer = null;
lock(LOCK_GETFROMMAPPATHCACHE)
{
answer = (Hashtable) AppDomain.CurrentDomain.GetData(J2EEConsts.MAP_PATH_CACHE);
if (answer == null)
{
answer = new Hashtable();
CachedDocumentTypeStorage storage = (CachedDocumentTypeStorage)GetAssembliesCachedDocument();
IDictionaryEnumerator e = storage.GetEnumerator();
e.Reset();
while (e.MoveNext())
{
string currentFile = (string)((DictionaryEntry)e.Current).Key;
answer[currentFile]= IAppDomainConfig.WAR_ROOT_SYMBOL + currentFile;
}
AppDomain.CurrentDomain.SetData(J2EEConsts.MAP_PATH_CACHE,answer);
}
}
return (string)answer[key];
}
// UNUSED METHOD
//The method was used by runtime to force file names casesensitivity
// problem. The filelist.xml file should contain correct file names,
// but currently it is unused
public static void LoadFileList()
{
Hashtable hashTable = (Hashtable) AppDomain.CurrentDomain.GetData(J2EEConsts.FILE_LIST_FILE);
if (hashTable == null)
{
XmlDocument doc;
try
{
Stream fs = (Stream)IOUtils.getStream(_fileListName);
if (fs == null)
{
AppDomain.CurrentDomain.SetData(J2EEConsts.FILE_LIST_FILE, new Hashtable());
return;
}
doc = new XmlDocument();
doc.Load(fs);
}
catch (Exception)
{
// Console.WriteLine("filelist.xml was not found!!!");
AppDomain.CurrentDomain.SetData(J2EEConsts.FILE_LIST_FILE, new Hashtable());
return;
}
// Console.WriteLine("filelist.xml was found!!!");
if (doc != null && doc.DocumentElement.HasChildNodes)
{
hashTable = CollectionsUtil.CreateCaseInsensitiveHashtable();
XmlNodeList nodeList = doc.DocumentElement.ChildNodes;
for (int i = 0;i < nodeList.Count ; i++)
{
string fileName = nodeList.Item(i).InnerText;
hashTable.Add(fileName,fileName);
}
AppDomain.CurrentDomain.SetData(J2EEConsts.FILE_LIST_FILE, hashTable);
}
}
}
private static ICachedXmlDoc GetAssembliesCachedDocument()
{
lock(LOCK_GETASSEMBLIESCACHEDDOCUMENT)
{
ICachedXmlDoc doc = (ICachedXmlDoc) AppDomain.CurrentDomain.GetData(J2EEConsts.ASSEMBLIES_FILE);
if (doc == null)
{
doc = CreateDocument();
if (doc != null)
AppDomain.CurrentDomain.SetData(J2EEConsts.ASSEMBLIES_FILE, doc);
}
return doc;
}
}
private static ICachedXmlDoc CreateDocument()
{
return new CachedDocumentTypeStorage();
}
public static Type GetObjectType(string url)
{
return GetCachedType(url);
}
private static Type GetCachedType(string url)
{
ICachedXmlDoc doc = PageMapper.GetAssembliesCachedDocument();
if (url.StartsWith(IAppDomainConfig.WAR_ROOT_SYMBOL))
url = url.Substring(IAppDomainConfig.WAR_ROOT_SYMBOL.Length);
Type t = doc.Get(url);
if (t == null)
throw new HttpException(404,"The requested resource (" + url + ") is not available.");
return t;
}
#region ICachedXmlDoc interface
interface ICachedXmlDoc
{
Type Get(string key);
//bool ContainsKey(object key);
}
#endregion
#region CachedDocumentTypeStorage class
class CachedDocumentTypeStorage : ICachedXmlDoc
{
public static readonly ICachedXmlDoc DEFAULT_DOC =
new CachedDocumentTypeStorage(0);
private static readonly int DEFAULT_PAGES_NUMBER = 25;
private Hashtable _table;
private CachedDocumentTypeStorage(int initTableSize)
{
_table = Hashtable.Synchronized(new Hashtable(initTableSize));
}
public CachedDocumentTypeStorage() :
this(DEFAULT_PAGES_NUMBER)
{}
Type ICachedXmlDoc.Get(string o)
{
return GetTypeByURL(o);
}
internal IDictionaryEnumerator GetEnumerator()
{
return _table.GetEnumerator();
}
public Type GetTypeByURL(string url)
{
string lwUrl = url.ToLower();
lock (_table)
{
object retVal = _table[lwUrl];
if (retVal == null)
{
PageCompiler compiler = new PageCompiler(url);
retVal = compiler.GetCachedType();
_table[lwUrl] = retVal;
}
return (Type)retVal;
}
}
}
#endregion
}
public class PageCompiler
{
private static readonly string PAGE_XPATH = "preserve";
private static readonly string ASSEM_ATTRIB_NAME = "assem";
private static readonly string TYPE_ATTRIB_NAME = "type";
private static string _parser = null;
private Type _type = null;
private string _xmlDescriptor = null;
private string _url = null;
private string _session = null;
public PageCompiler(string url)
{
_url = url;
_xmlDescriptor = GetDescFromUrl();
_session = DateTime.Now.Ticks.ToString();
}
public Type GetCachedType()
{
if (_type != null)
return _type;
string typeName = null;
//if the desciptor exists in the war - get the type
string descPath = String.Join("/", new string[]{"assemblies", _xmlDescriptor});
try
{
#if DEBUG
Console.WriteLine(descPath);
#endif
Stream fs = (Stream)IOUtils.getStream("/" + descPath);
if (fs != null)
{
typeName = GetTypeFromDescStream(fs);
}
}
catch (Exception ex)
{
#if DEBUG
Console.WriteLine(ex);
#endif
//desc not in the war
typeName = null;
}
if (typeName != null)
{
_type = Type.GetType(typeName);
return _type;
}
string fileName = Path.GetFileName(_url);
if (fileName.ToLower() != "global.asax"
&& fileName.ToLower() != "defaultwsdlhelpgenerator.aspx")
{
string fullFileName = HttpContext.Current.Request.MapPath(_url);
if ( File.Exists(fullFileName) ) {
//type not found - run aspxparser
string[] command = GetParserCmd();
if (J2EEUtils.RunProc(command) != 0)
throw GetCompilerError();
}
else {
string message = "The requested resource (" + _url + ") is not available.";
throw new HttpException(404, message);
}
}
//if the desciptor exists in the real app dir - get the type
try
{
StreamReader sr = new StreamReader(HttpContext.Current.Request.MapPath("/" + descPath));
typeName = GetTypeFromDescStream(sr.BaseStream);
sr.Close();
}
catch (Exception ex)
{
Console.WriteLine(ex);
throw ex;
}
if (typeName != null)
{
_type = Type.GetType(typeName);
return _type;
}
return null;
}
private string GetTypeFromDescStream(Stream fs)
{
if (fs != null)
{
XmlDocument descXml = new XmlDocument();
descXml.Load(fs);
string assem = descXml.SelectSingleNode(PAGE_XPATH).Attributes[ASSEM_ATTRIB_NAME].Value;
string shortType = descXml.SelectSingleNode(PAGE_XPATH).Attributes[TYPE_ATTRIB_NAME].Value;
string typeName = String.Format("{0}, {1}",shortType,assem);
fs.Close();
return typeName;
}
return null;
}
private string[] GetParserCmd()
{
string[] cmd = new string[5];
cmd[0] = GetParser();
cmd[1] = "/aspxFiles:" + _url.Trim('/').Replace('/','\\');
cmd[2] = "/session:" + _session;
cmd[3] = "/appDir:" + (string)AppDomain.CurrentDomain.GetData(IAppDomainConfig.APP_PHYS_DIR);
cmd[4] = "/compilepages";
return cmd;
}
private string GetParser()
{
if (_parser == null)
{
StreamReader sr =
File.OpenText(HttpContext.Current.Request.MapPath("/AspxParser.params"));
_parser = sr.ReadLine();
sr.Close();
}
return _parser;
}
private string GetDescFromUrl()
{
string fileName = Path.GetFileName(_url);
if (fileName.ToLower() == "global.asax")
return "global.asax.xml";
string id = GetIdFromUrl(_url);
string[] descName = new string[3] {fileName, id, ".xml"} ;
return string.Concat(descName).ToLower();
}
private string GetIdFromUrl(string path)
{
path = path.Trim('/');
string fileName = Path.GetFileName(path);
string id = string.Empty;
if (path.Length > fileName.Length)
id = "." + path.Substring(0,path.Length - fileName.Length).Replace('/','_');
return id;
}
private Exception GetCompilerError()
{
string _errFile = HttpContext.Current.Request.MapPath("/" + _session + ".vmwerr");
if (!File.Exists(_errFile))
throw new FileNotFoundException("Internal Error",_errFile);
StreamReader sr = new StreamReader(_errFile);
string message = string.Empty, line = null, file = null, lineInFile = "0";
while ((line = sr.ReadLine()) != null)
{
if (line.StartsWith("Message: "))
message = line.Substring("Message: ".Length);
else if (line.StartsWith("File: "))
file = line.Substring("File: ".Length);
else if (line.StartsWith("Line: "))
lineInFile = line.Substring("Line: ".Length);
}
sr.Close();
if (file != null)
{
Location loc = new Location(null);
loc.Filename = file;
loc.BeginLine = int.Parse(lineInFile);
return new ParseException(loc,message);
}
if (message.IndexOf(typeof(FileNotFoundException).Name) != -1 &&
message.IndexOf(_url.Trim('\\','/').Replace('/','\\')) != -1)
message = "The requested resource (" + _url + ") is not available.";
return new HttpException(404,(message != null ? message : string.Empty));
}
}
}
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