基于Java的邮件服务器源程序

/* CVS ID: $Id: WebMailSession.java,v 1.14 2001/03/26 17:08:11 wastl Exp $ */ package net.wastl.webmail.server; import java.net.*; import java.io.*; import java.util.*; import java.text.*; import javax.mail.*; import javax.mail.event.*; import javax.mail.internet.*; import net.wastl.webmail.misc.*; import net.wastl.webmail.xml.*; // No longer used: //import net.wastl.webmail.ui.html.JavaScriptFilter; //import net.wastl.webmail.ui.html.HTMLifier; import net.wastl.webmail.ui.html.Fancyfier; import net.wastl.webmail.server.http.HTTPRequestHeader; import net.wastl.webmail.exceptions.*; // Modified by exce, start import org.bulbul.webmail.util.TranscodeUtil; // Modified by exce, end import org.w3c.tidy.Tidy; import org.w3c.dom.*; /* * WebMailSession.java * * Created: Thu Feb 4 12:59:30 1999 * * Copyright (C) 1999-2001 Sebastian Schaffert * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /** * A user session for WebMail. * Contains the state of the actual user (loads it from disk). * Has a unique session-ID. * * * @author Sebastian Schaffert * @version $Revision: 1.14 $ */ /* 9/24/2000 devink - updated for challenge/response auth */ public class WebMailSession implements HTTPSession { /** When has the session been last accessed? */ private long last_access; /** The session-ID for this session */ private String session_code; /** Parent WebMailServer */ private WebMailServer parent; /** State of the current users configuration */ private XMLUserData user; private XMLUserModel model; /** Connections to Mailboxes */ private Hashtable connections; /** Connections to hosts */ private Hashtable stores; /** javax.mail Mailsession */ private Session mailsession; private InetAddress remote; /* Files attached to messages will be stored here. We will have to take care of possible memory problems! */ private Hashtable mime_parts_decoded; private boolean sent; private String remote_agent; private String remote_accepts; private int attachments_size=0; private String last_login; /** Save the login password. It will be used for the second try password if * opening a folder fails. */ private String login_password; private Object sess=null; private Hashtable folders; protected Vector need_expunge_folders; protected boolean is_logged_out=false; public WebMailSession(WebMailServer parent,Object parm,HTTPRequestHeader h) throws UserDataException, InvalidPasswordException { try { Class srvltreq=Class.forName("javax.servlet.http.HttpServletRequest"); if(srvltreq.isInstance(parm)) { javax.servlet.http.HttpServletRequest req=(javax.servlet.http.HttpServletRequest)parm; this.sess=req.getSession(false); session_code=((javax.servlet.http.HttpSession)sess).getId(); try { remote=InetAddress.getByName(req.getRemoteHost()); } catch(UnknownHostException e) { try { remote=InetAddress.getByName(req.getRemoteAddr()); } catch(Exception ex) { try { remote=InetAddress.getByName("localhost"); } catch(Exception ex2) {} } } } else { throw new Exception("Servlet class found but not running as servlet"); } } catch(Throwable t) { this.remote=(InetAddress)parm; session_code=Helper.calcSessionCode(remote,h); } doInit(parent,h); } /** * This method does the actual initialisation * * devink 7/15/2000 - added TwoPassAuthenticationException * - updated call to getUserData(), to use my new one. * devink 9/24/2000 - reverted back to old getUserData call */ protected void doInit(WebMailServer parent, HTTPRequestHeader h) throws UserDataException, InvalidPasswordException { setLastAccess(); this.parent=parent; remote_agent=h.getHeader("User-Agent").replace('\n',' '); remote_accepts=h.getHeader("Accept").replace('\n',' '); parent.getStorage().log(Storage.LOG_INFO,"WebMail: New Session ("+session_code+")"); user=WebMailServer.getStorage().getUserData(h.getContent("login"),h.getContent("vdom"),h.getContent("password"),true); last_login=user.getLastLogin(); user.login(); login_password=h.getContent("password"); model=parent.getStorage().createXMLUserModel(user); connections=new Hashtable(); stores=new Hashtable(); folders=new Hashtable(); mailsession=Session.getDefaultInstance(System.getProperties(),null); /* If the user logs in for the first time we want all folders subscribed */ if(user.getLoginCount().equals("1")) { Enumeration enum=user.mailHosts(); while(enum.hasMoreElements()) { String id=(String)enum.nextElement(); if(user.getMailHost(id).getName().equals("Default")) { try { setSubscribedAll(id,true); } catch(MessagingException ex) { ex.printStackTrace(); } break; } } } setEnv(); } public XMLUserModel getUserModel() { return model; } public Document getModel() { return model.getRoot(); } /** * Calculate session-ID for a session. * * @param a Adress of the remote host * @param h Requestheader of the remote user agent * @returns Session-ID */ public String calcCode(InetAddress a, HTTPRequestHeader h) { if(sess==null) { return Helper.calcSessionCode(a,h); } else { try { Class srvltreq=Class.forName("javax.servlet.http.HttpSession"); if(srvltreq.isInstance(sess)) { return ((javax.servlet.http.HttpSession)sess).getId(); } else { return "error"; } } catch(Throwable t) { return "error"; } } } /** * Login to this session. * Establishes connections to a user�s Mailhosts * * @param h RequestHeader with content from Login-POST operation. * @deprecated Use login() instead, no need for parameters and exception handling */ public void login(HTTPRequestHeader h) throws InvalidPasswordException { //user.login(h.getContent("password")); login(); } /** * Login this session. * * Updates access time, sets initial environment and connects all configured mailboxes. */ public void login() { setLastAccess(); setEnv(); connectAll(); } /** * Return a locale-specific string resource */ public String getStringResource(String key) { return parent.getStorage().getStringResource(key,user.getPreferredLocale()); } /** * Create a Message List. * Fetches a list of headers in folder foldername for part list_part. * The messagelist will be stored in the "MESSAGES" environment. * * @param foldername folder for which a message list should be built * @param list_part part of list to display (1 = last xx messages, 2 = total-2*xx - total-xx messages) */ public void createMessageList(String folderhash,int list_part) throws NoSuchFolderException { long time_start=System.currentTimeMillis(); TimeZone tz=TimeZone.getDefault(); DateFormat