Java tutorial
/* * DavMail POP/IMAP/SMTP/CalDav/LDAP Exchange Gateway * Copyright (C) 2009 Mickael Guessant * * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ package davmail.imap; import com.sun.mail.imap.protocol.BASE64MailboxDecoder; import com.sun.mail.imap.protocol.BASE64MailboxEncoder; import davmail.AbstractConnection; import davmail.BundleMessage; import davmail.DavGateway; import davmail.Settings; import davmail.exception.DavMailException; import davmail.exception.HttpForbiddenException; import davmail.exception.HttpNotFoundException; import davmail.exception.InsufficientStorageException; import davmail.exchange.ExchangeSession; import davmail.exchange.ExchangeSessionFactory; import davmail.ui.tray.DavGatewayTray; import davmail.util.IOUtil; import davmail.util.StringUtil; import org.apache.commons.httpclient.HttpException; import org.apache.log4j.Logger; import javax.mail.MessagingException; import javax.mail.internet.*; import javax.mail.util.SharedByteArrayInputStream; import java.io.*; import java.net.Socket; import java.net.SocketException; import java.net.SocketTimeoutException; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.*; /** * Dav Gateway IMAP connection implementation. */ public class ImapConnection extends AbstractConnection { private static final Logger LOGGER = Logger.getLogger(ImapConnection.class); protected String baseMailboxPath; ExchangeSession.Folder currentFolder; /** * Initialize the streams and start the thread. * * @param clientSocket IMAP client socket */ public ImapConnection(Socket clientSocket) { super(ImapConnection.class.getSimpleName(), clientSocket, "UTF-8"); } @Override public void run() { final String capabilities; int imapIdleDelay = Settings.getIntProperty("davmail.imapIdleDelay") * 60; if (imapIdleDelay > 0) { capabilities = "CAPABILITY IMAP4REV1 AUTH=LOGIN IDLE MOVE"; } else { capabilities = "CAPABILITY IMAP4REV1 AUTH=LOGIN MOVE"; } String line; String commandId = null; IMAPTokenizer tokens; try { // ExchangeSessionFactory.checkConfig(); sendClient("* OK [" + capabilities + "] IMAP4rev1 DavMail " + DavGateway.getCurrentVersion() + " server ready"); for (;;) { line = readClient(); // unable to read line, connection closed ? if (line == null) { break; } tokens = new IMAPTokenizer(line); if (tokens.hasMoreTokens()) { commandId = tokens.nextToken(); checkInfiniteLoop(line); if (tokens.hasMoreTokens()) { String command = tokens.nextToken(); if ("LOGOUT".equalsIgnoreCase(command)) { sendClient("* BYE Closing connection"); sendClient(commandId + " OK LOGOUT completed"); break; } if ("capability".equalsIgnoreCase(command)) { sendClient("* " + capabilities); sendClient(commandId + " OK CAPABILITY completed"); } else if ("login".equalsIgnoreCase(command)) { parseCredentials(tokens); // detect shared mailbox access splitUserName(); try { session = ExchangeSessionFactory.getInstance(userName, password); sendClient(commandId + " OK Authenticated"); state = State.AUTHENTICATED; } catch (Exception e) { DavGatewayTray.error(e); sendClient(commandId + " NO LOGIN failed"); state = State.INITIAL; } } else if ("AUTHENTICATE".equalsIgnoreCase(command)) { if (tokens.hasMoreTokens()) { String authenticationMethod = tokens.nextToken(); if ("LOGIN".equalsIgnoreCase(authenticationMethod)) { try { sendClient("+ " + base64Encode("Username:")); state = State.LOGIN; userName = base64Decode(readClient()); // detect shared mailbox access splitUserName(); sendClient("+ " + base64Encode("Password:")); state = State.PASSWORD; password = base64Decode(readClient()); session = ExchangeSessionFactory.getInstance(userName, password); sendClient(commandId + " OK Authenticated"); state = State.AUTHENTICATED; } catch (Exception e) { DavGatewayTray.error(e); sendClient(commandId + " NO LOGIN failed"); state = State.INITIAL; } } else { sendClient(commandId + " NO unsupported authentication method"); } } else { sendClient(commandId + " BAD authentication method required"); } } else { if (state != State.AUTHENTICATED) { sendClient(commandId + " BAD command authentication required"); } else { // check for expired session session = ExchangeSessionFactory.getInstance(session, userName, password); if ("lsub".equalsIgnoreCase(command) || "list".equalsIgnoreCase(command)) { if (tokens.hasMoreTokens()) { String folderContext; if (baseMailboxPath == null) { folderContext = BASE64MailboxDecoder.decode(tokens.nextToken()); } else { folderContext = baseMailboxPath + BASE64MailboxDecoder.decode(tokens.nextToken()); } if (tokens.hasMoreTokens()) { String folderQuery = folderContext + BASE64MailboxDecoder.decode(tokens.nextToken()); if (folderQuery.endsWith("%/%") && !"/%/%".equals(folderQuery)) { List<ExchangeSession.Folder> folders = session.getSubFolders( folderQuery.substring(0, folderQuery.length() - 3), false); for (ExchangeSession.Folder folder : folders) { sendClient( "* " + command + " (" + folder.getFlags() + ") \"/\" \"" + BASE64MailboxEncoder.encode(folder.folderPath) + '\"'); sendSubFolders(command, folder.folderPath, false); } sendClient(commandId + " OK " + command + " completed"); } else if (folderQuery.endsWith("%") || folderQuery.endsWith("*")) { if ("/*".equals(folderQuery) || "/%".equals(folderQuery) || "/%/%".equals(folderQuery)) { folderQuery = folderQuery.substring(1); if ("%/%".equals(folderQuery)) { folderQuery = folderQuery.substring(0, folderQuery.length() - 2); } sendClient( "* " + command + " (\\HasChildren) \"/\" \"/public\""); } if ("*%".equals(folderQuery)) { folderQuery = "*"; } boolean recursive = folderQuery.endsWith("*") && !folderQuery.startsWith("/public"); sendSubFolders(command, folderQuery.substring(0, folderQuery.length() - 1), recursive); sendClient(commandId + " OK " + command + " completed"); } else { ExchangeSession.Folder folder = null; try { folder = session.getFolder(folderQuery); } catch (HttpForbiddenException e) { // access forbidden, ignore DavGatewayTray.debug(new BundleMessage( "LOG_FOLDER_ACCESS_FORBIDDEN", folderQuery)); } catch (HttpNotFoundException e) { // not found, ignore DavGatewayTray.debug( new BundleMessage("LOG_FOLDER_NOT_FOUND", folderQuery)); } catch (HttpException e) { // other errors, ignore DavGatewayTray .debug(new BundleMessage("LOG_FOLDER_ACCESS_ERROR", folderQuery, e.getMessage())); } if (folder != null) { sendClient( "* " + command + " (" + folder.getFlags() + ") \"/\" \"" + BASE64MailboxEncoder.encode(folder.folderPath) + '\"'); sendClient(commandId + " OK " + command + " completed"); } else { sendClient(commandId + " NO Folder not found"); } } } else { sendClient(commandId + " BAD missing folder argument"); } } else { sendClient(commandId + " BAD missing folder argument"); } } else if ("select".equalsIgnoreCase(command) || "examine".equalsIgnoreCase(command)) { if (tokens.hasMoreTokens()) { @SuppressWarnings({ "NonConstantStringShouldBeStringBuffer" }) String folderName = BASE64MailboxDecoder.decode(tokens.nextToken()); if (baseMailboxPath != null && !folderName.startsWith("/")) { folderName = baseMailboxPath + folderName; } try { currentFolder = session.getFolder(folderName); currentFolder.loadMessages(); sendClient("* " + currentFolder.count() + " EXISTS"); sendClient("* " + currentFolder.recent + " RECENT"); sendClient("* OK [UIDVALIDITY 1]"); if (currentFolder.count() == 0) { sendClient("* OK [UIDNEXT 1]"); } else { sendClient("* OK [UIDNEXT " + currentFolder.getUidNext() + ']'); } sendClient( "* FLAGS (\\Answered \\Deleted \\Draft \\Flagged \\Seen $Forwarded Junk)"); sendClient( "* OK [PERMANENTFLAGS (\\Answered \\Deleted \\Draft \\Flagged \\Seen $Forwarded Junk \\*)]"); if ("select".equalsIgnoreCase(command)) { sendClient( commandId + " OK [READ-WRITE] " + command + " completed"); } else { sendClient(commandId + " OK [READ-ONLY] " + command + " completed"); } } catch (HttpNotFoundException e) { sendClient(commandId + " NO Not found"); } catch (HttpForbiddenException e) { sendClient(commandId + " NO Forbidden"); } } else { sendClient(commandId + " BAD command unrecognized"); } } else if ("expunge".equalsIgnoreCase(command)) { if (expunge(false)) { // need to refresh folder to avoid 404 errors session.refreshFolder(currentFolder); } sendClient(commandId + " OK " + command + " completed"); } else if ("close".equalsIgnoreCase(command)) { expunge(true); // deselect folder currentFolder = null; sendClient(commandId + " OK " + command + " completed"); } else if ("create".equalsIgnoreCase(command)) { if (tokens.hasMoreTokens()) { String folderName = BASE64MailboxDecoder.decode(tokens.nextToken()); session.createMessageFolder(folderName); sendClient(commandId + " OK folder created"); } else { sendClient(commandId + " BAD missing create argument"); } } else if ("rename".equalsIgnoreCase(command)) { String folderName = BASE64MailboxDecoder.decode(tokens.nextToken()); String targetName = BASE64MailboxDecoder.decode(tokens.nextToken()); try { session.moveFolder(folderName, targetName); sendClient(commandId + " OK rename completed"); } catch (HttpException e) { sendClient(commandId + " NO " + e.getMessage()); } } else if ("delete".equalsIgnoreCase(command)) { String folderName = BASE64MailboxDecoder.decode(tokens.nextToken()); try { session.deleteFolder(folderName); sendClient(commandId + " OK folder deleted"); } catch (HttpException e) { sendClient(commandId + " NO " + e.getMessage()); } } else if ("uid".equalsIgnoreCase(command)) { if (tokens.hasMoreTokens()) { String subcommand = tokens.nextToken(); if ("fetch".equalsIgnoreCase(subcommand)) { if (currentFolder == null) { sendClient(commandId + " NO no folder selected"); } else { String ranges = tokens.nextToken(); if (ranges == null) { sendClient(commandId + " BAD missing range parameter"); } else { String parameters = null; if (tokens.hasMoreTokens()) { parameters = tokens.nextToken(); } UIDRangeIterator uidRangeIterator = new UIDRangeIterator( currentFolder.messages, ranges); while (uidRangeIterator.hasNext()) { DavGatewayTray.switchIcon(); ExchangeSession.Message message = uidRangeIterator.next(); try { handleFetch(message, uidRangeIterator.currentIndex, parameters); } catch (HttpNotFoundException e) { LOGGER.warn("Ignore missing message " + uidRangeIterator.currentIndex); } catch (SocketException e) { // client closed connection throw e; } catch (IOException e) { DavGatewayTray.log(e); sendClient( commandId + " NO Unable to retrieve message: " + e.getMessage()); } } sendClient(commandId + " OK UID FETCH completed"); } } } else if ("search".equalsIgnoreCase(subcommand)) { List<Long> uidList = handleSearch(tokens); StringBuilder buffer = new StringBuilder("* SEARCH"); for (long uid : uidList) { buffer.append(' '); buffer.append(uid); } sendClient(buffer.toString()); sendClient(commandId + " OK SEARCH completed"); } else if ("store".equalsIgnoreCase(subcommand)) { UIDRangeIterator uidRangeIterator = new UIDRangeIterator( currentFolder.messages, tokens.nextToken()); String action = tokens.nextToken(); String flags = tokens.nextToken(); handleStore(commandId, uidRangeIterator, action, flags); } else if ("copy".equalsIgnoreCase(subcommand) || "move".equalsIgnoreCase(subcommand)) { try { UIDRangeIterator uidRangeIterator = new UIDRangeIterator( currentFolder.messages, tokens.nextToken()); String targetName = BASE64MailboxDecoder.decode(tokens.nextToken()); if (!uidRangeIterator.hasNext()) { sendClient(commandId + " NO " + "No message found"); } else { while (uidRangeIterator.hasNext()) { DavGatewayTray.switchIcon(); ExchangeSession.Message message = uidRangeIterator.next(); if ("copy".equalsIgnoreCase(subcommand)) { session.copyMessage(message, targetName); } else { session.moveMessage(message, targetName); } } sendClient(commandId + " OK " + subcommand + " completed"); } } catch (HttpException e) { sendClient(commandId + " NO " + e.getMessage()); } } } else { sendClient(commandId + " BAD command unrecognized"); } } else if ("search".equalsIgnoreCase(command)) { if (currentFolder == null) { sendClient(commandId + " NO no folder selected"); } else { List<Long> uidList = handleSearch(tokens); if (uidList.isEmpty()) { sendClient("* SEARCH"); } else { int currentIndex = 0; for (ExchangeSession.Message message : currentFolder.messages) { currentIndex++; if (uidList.contains(message.getImapUid())) { sendClient("* SEARCH " + currentIndex); } } } sendClient(commandId + " OK SEARCH completed"); } } else if ("fetch".equalsIgnoreCase(command)) { if (currentFolder == null) { sendClient(commandId + " NO no folder selected"); } else { RangeIterator rangeIterator = new RangeIterator(currentFolder.messages, tokens.nextToken()); String parameters = null; if (tokens.hasMoreTokens()) { parameters = tokens.nextToken(); } while (rangeIterator.hasNext()) { DavGatewayTray.switchIcon(); ExchangeSession.Message message = rangeIterator.next(); try { handleFetch(message, rangeIterator.currentIndex, parameters); } catch (HttpNotFoundException e) { LOGGER.warn("Ignore missing message " + rangeIterator.currentIndex); } catch (SocketException e) { // client closed connection, rethrow exception throw e; } catch (IOException e) { DavGatewayTray.log(e); sendClient(commandId + " NO Unable to retrieve message: " + e.getMessage()); } } sendClient(commandId + " OK FETCH completed"); } } else if ("store".equalsIgnoreCase(command)) { RangeIterator rangeIterator = new RangeIterator(currentFolder.messages, tokens.nextToken()); String action = tokens.nextToken(); String flags = tokens.nextToken(); handleStore(commandId, rangeIterator, action, flags); } else if ("copy".equalsIgnoreCase(command) || "move".equalsIgnoreCase(command)) { try { RangeIterator rangeIterator = new RangeIterator(currentFolder.messages, tokens.nextToken()); String targetName = BASE64MailboxDecoder.decode(tokens.nextToken()); if (!rangeIterator.hasNext()) { sendClient(commandId + " NO " + "No message found"); } else { while (rangeIterator.hasNext()) { DavGatewayTray.switchIcon(); ExchangeSession.Message message = rangeIterator.next(); if ("copy".equalsIgnoreCase(command)) { session.copyMessage(message, targetName); } else { session.moveMessage(message, targetName); } } sendClient(commandId + " OK " + command + " completed"); } } catch (HttpException e) { sendClient(commandId + " NO " + e.getMessage()); } } else if ("append".equalsIgnoreCase(command)) { String folderName = BASE64MailboxDecoder.decode(tokens.nextToken()); HashMap<String, String> properties = new HashMap<String, String>(); String flags = null; String date = null; // handle optional flags String nextToken = tokens.nextQuotedToken(); if (nextToken.startsWith("(")) { flags = StringUtil.removeQuotes(nextToken); if (tokens.hasMoreTokens()) { nextToken = tokens.nextToken(); if (tokens.hasMoreTokens()) { date = nextToken; nextToken = tokens.nextToken(); } } } else if (tokens.hasMoreTokens()) { date = StringUtil.removeQuotes(nextToken); nextToken = tokens.nextToken(); } if (flags != null) { // parse flags, on create read and draft flags are on the // same messageFlags property, 8 means draft and 1 means read StringTokenizer flagtokenizer = new StringTokenizer(flags); while (flagtokenizer.hasMoreTokens()) { String flag = flagtokenizer.nextToken(); if ("\\Seen".equals(flag)) { if (properties.containsKey("draft")) { // draft message, add read flag properties.put("draft", "9"); } else { // not (yet) draft, set read flag properties.put("draft", "1"); } } else if ("\\Flagged".equals(flag)) { properties.put("flagged", "2"); } else if ("\\Answered".equals(flag)) { properties.put("answered", "102"); } else if ("$Forwarded".equals(flag)) { properties.put("forwarded", "104"); } else if ("\\Draft".equals(flag)) { if (properties.containsKey("draft")) { // read message, add draft flag properties.put("draft", "9"); } else { // not (yet) read, set draft flag properties.put("draft", "8"); } } else if ("Junk".equals(flag)) { properties.put("junk", "1"); } } } else { // no flags, force not draft and unread properties.put("draft", "0"); } // handle optional date if (date != null) { SimpleDateFormat dateParser = new SimpleDateFormat("dd-MMM-yyyy HH:mm:ss Z", Locale.ENGLISH); Date dateReceived = dateParser.parse(date); SimpleDateFormat dateFormatter = new SimpleDateFormat( "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"); dateFormatter.setTimeZone(ExchangeSession.GMT_TIMEZONE); properties.put("datereceived", dateFormatter.format(dateReceived)); } int size = Integer.parseInt(StringUtil.removeQuotes(nextToken)); sendClient("+ send literal data"); byte[] buffer = in.readContent(size); // empty line readClient(); MimeMessage mimeMessage = new MimeMessage(null, new SharedByteArrayInputStream(buffer)); String messageName = UUID.randomUUID().toString() + ".EML"; try { session.createMessage(folderName, messageName, properties, mimeMessage); sendClient(commandId + " OK APPEND completed"); } catch (InsufficientStorageException e) { sendClient(commandId + " NO " + e.getMessage()); } } else if ("idle".equalsIgnoreCase(command) && imapIdleDelay > 0) { if (currentFolder != null) { sendClient("+ idling "); // clear cache before going to idle mode currentFolder.clearCache(); DavGatewayTray.resetIcon(); try { int count = 0; while (in.available() == 0) { if (++count >= imapIdleDelay) { count = 0; TreeMap<Long, String> previousImapFlagMap = currentFolder .getImapFlagMap(); if (session.refreshFolder(currentFolder)) { handleRefresh(previousImapFlagMap, currentFolder.getImapFlagMap()); } } // sleep 1 second Thread.sleep(1000); } // read DONE line line = readClient(); if ("DONE".equals(line)) { sendClient(commandId + " OK " + command + " terminated"); } else { sendClient(commandId + " BAD command unrecognized"); } } catch (IOException e) { // client connection closed throw new SocketException(e.getMessage()); } } else { sendClient(commandId + " NO no folder selected"); } } else if ("noop".equalsIgnoreCase(command) || "check".equalsIgnoreCase(command)) { if (currentFolder != null) { DavGatewayTray.debug(new BundleMessage("LOG_IMAP_COMMAND", command, currentFolder.folderPath)); TreeMap<Long, String> previousImapFlagMap = currentFolder.getImapFlagMap(); if (session.refreshFolder(currentFolder)) { handleRefresh(previousImapFlagMap, currentFolder.getImapFlagMap()); } } sendClient(commandId + " OK " + command + " completed"); } else if ("subscribe".equalsIgnoreCase(command) || "unsubscribe".equalsIgnoreCase(command)) { sendClient(commandId + " OK " + command + " completed"); } else if ("status".equalsIgnoreCase(command)) { try { String encodedFolderName = tokens.nextToken(); String folderName = BASE64MailboxDecoder.decode(encodedFolderName); ExchangeSession.Folder folder = session.getFolder(folderName); // must retrieve messages folder.loadMessages(); String parameters = tokens.nextToken(); StringBuilder answer = new StringBuilder(); StringTokenizer parametersTokens = new StringTokenizer(parameters); while (parametersTokens.hasMoreTokens()) { String token = parametersTokens.nextToken(); if ("MESSAGES".equalsIgnoreCase(token)) { answer.append("MESSAGES ").append(folder.count()).append(' '); } if ("RECENT".equalsIgnoreCase(token)) { answer.append("RECENT ").append(folder.recent).append(' '); } if ("UIDNEXT".equalsIgnoreCase(token)) { if (folder.count() == 0) { answer.append("UIDNEXT 1 "); } else { if (folder.count() == 0) { answer.append("UIDNEXT 1 "); } else { answer.append("UIDNEXT ").append(folder.getUidNext()) .append(' '); } } } if ("UIDVALIDITY".equalsIgnoreCase(token)) { answer.append("UIDVALIDITY 1 "); } if ("UNSEEN".equalsIgnoreCase(token)) { answer.append("UNSEEN ").append(folder.unreadCount).append(' '); } } sendClient("* STATUS \"" + encodedFolderName + "\" (" + answer.toString().trim() + ')'); sendClient(commandId + " OK " + command + " completed"); } catch (HttpException e) { sendClient(commandId + " NO folder not found"); } } else { sendClient(commandId + " BAD command unrecognized"); } } } } else { sendClient(commandId + " BAD missing command"); } } else { sendClient("BAD Null command"); } DavGatewayTray.resetIcon(); } os.flush(); } catch (SocketTimeoutException e) { DavGatewayTray.debug(new BundleMessage("LOG_CLOSE_CONNECTION_ON_TIMEOUT")); try { sendClient("* BYE Closing connection"); } catch (IOException e1) { DavGatewayTray.debug(new BundleMessage("LOG_EXCEPTION_CLOSING_CONNECTION_ON_TIMEOUT")); } } catch (SocketException e) { LOGGER.warn(BundleMessage.formatLog("LOG_CLIENT_CLOSED_CONNECTION")); } catch (Exception e) { DavGatewayTray.log(e); try { String message = ((e.getMessage() == null) ? e.toString() : e.getMessage()).replaceAll("\\n", " "); if (commandId != null) { sendClient(commandId + " BAD unable to handle request: " + message); } else { sendClient("* BAD unable to handle request: " + message); } } catch (IOException e2) { DavGatewayTray.warn(new BundleMessage("LOG_EXCEPTION_SENDING_ERROR_TO_CLIENT"), e2); } } finally { close(); } DavGatewayTray.resetIcon(); } protected String lastCommand; protected int lastCommandCount; /** * Detect infinite loop on the client side. * * @param line IMAP command line * @throws IOException on infinite loop */ protected void checkInfiniteLoop(String line) throws IOException { int spaceIndex = line.indexOf(' '); if (spaceIndex < 0) { // invalid command line, reset lastCommand = null; lastCommandCount = 0; } else { String command = line.substring(spaceIndex + 1); if (command.equals(lastCommand)) { lastCommandCount++; if (lastCommandCount > 100 && !"NOOP".equalsIgnoreCase(lastCommand) && !"IDLE".equalsIgnoreCase(lastCommand)) { // more than a hundred times the same command => this is a client infinite loop, close connection throw new IOException("Infinite loop on command " + command + " detected"); } } else { // new command, reset lastCommand = command; lastCommandCount = 0; } } } /** * Detect shared mailbox access. * see http://msexchangeteam.com/archive/2004/03/31/105275.aspx */ protected void splitUserName() { String[] tokens = null; if (userName.indexOf('/') >= 0) { tokens = userName.split("/"); } else if (userName.indexOf('\\') >= 0) { tokens = userName.split("\\\\"); } if (tokens != null && tokens.length == 3) { userName = tokens[0] + '\\' + tokens[1]; baseMailboxPath = "/users/" + tokens[2] + '/'; } } /** * Send expunge untagged response for removed IMAP message uids. * * @param previousImapUidList uid list before refresh * @param imapUidList uid list after refresh * @throws IOException on error */ private void handleRefresh(TreeMap<Long, String> previousImapFlagMap, TreeMap<Long, String> imapFlagMap) throws IOException { // send deleted message expunge notification int index = 1; for (long previousImapUid : previousImapFlagMap.keySet()) { if (!imapFlagMap.keySet().contains(previousImapUid)) { sendClient("* " + index + " EXPUNGE"); } else { // send updated flags if (!previousImapFlagMap.get(previousImapUid).equals(imapFlagMap.get(previousImapUid))) { sendClient("* " + index + " FETCH (UID " + previousImapUid + " FLAGS (" + imapFlagMap.get(previousImapUid) + "))"); } index++; } } sendClient("* " + currentFolder.count() + " EXISTS"); sendClient("* " + currentFolder.recent + " RECENT"); } private void handleFetch(ExchangeSession.Message message, int currentIndex, String parameters) throws IOException, MessagingException { StringBuilder buffer = new StringBuilder(); buffer.append("* ").append(currentIndex).append(" FETCH (UID ").append(message.getImapUid()); if (parameters != null) { StringTokenizer paramTokens = new StringTokenizer(parameters); while (paramTokens.hasMoreTokens()) { @SuppressWarnings({ "NonConstantStringShouldBeStringBuffer" }) String param = paramTokens.nextToken().toUpperCase(); if ("FLAGS".equals(param)) { buffer.append(" FLAGS (").append(message.getImapFlags()).append(')'); } else if ("RFC822.SIZE".equals(param)) { int size; if (parameters.indexOf("BODY.PEEK[HEADER.FIELDS (") >= 0) { // Header request, send approximate size size = message.size; } else { size = message.getMimeMessageSize(); } buffer.append(" RFC822.SIZE ").append(size); } else if ("ENVELOPE".equals(param)) { appendEnvelope(buffer, message); } else if ("BODYSTRUCTURE".equals(param)) { appendBodyStructure(buffer, message); } else if ("INTERNALDATE".equals(param) && message.date != null && message.date.length() > 0) { try { SimpleDateFormat dateParser = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"); dateParser.setTimeZone(ExchangeSession.GMT_TIMEZONE); Date date = ExchangeSession.getZuluDateFormat().parse(message.date); SimpleDateFormat dateFormatter = new SimpleDateFormat("dd-MMM-yyyy HH:mm:ss Z", Locale.ENGLISH); buffer.append(" INTERNALDATE \"").append(dateFormatter.format(date)).append('\"'); } catch (ParseException e) { throw new DavMailException("EXCEPTION_INVALID_DATE", message.date); } } else if (param.equals("RFC822") || param.startsWith("BODY[") || param.startsWith("BODY.PEEK[") || "RFC822.HEADER".equals(param)) { // get full param if (param.indexOf('[') >= 0) { StringBuilder paramBuffer = new StringBuilder(param); while (paramTokens.hasMoreTokens() && paramBuffer.indexOf("]") < 0) { paramBuffer.append(' ').append(paramTokens.nextToken()); } param = paramBuffer.toString(); } // parse buffer size int startIndex = 0; int maxSize = Integer.MAX_VALUE; int ltIndex = param.indexOf('<'); if (ltIndex >= 0) { int dotIndex = param.indexOf('.', ltIndex); if (dotIndex >= 0) { startIndex = Integer.parseInt(param.substring(ltIndex + 1, dotIndex)); maxSize = Integer.parseInt(param.substring(dotIndex + 1, param.indexOf('>'))); } } ByteArrayOutputStream baos = new ByteArrayOutputStream(); InputStream partInputStream = null; OutputStream partOutputStream = null; // try to parse message part index String partIndexString = StringUtil.getToken(param, "[", "]"); if ("".equals(partIndexString) || partIndexString == null) { // write message with headers partOutputStream = new PartialOutputStream(baos, startIndex, maxSize); partInputStream = message.getRawInputStream(); } else if ("TEXT".equals(partIndexString)) { // write message without headers partOutputStream = new PartialOutputStream(baos, startIndex, maxSize); partInputStream = message.getMimeMessage().getRawInputStream(); } else if ("RFC822.HEADER".equals(param) || partIndexString.startsWith("HEADER")) { // Header requested fetch headers String[] requestedHeaders = getRequestedHeaders(partIndexString); if (requestedHeaders != null) { // OSX Lion special flags request if (requestedHeaders.length == 1 && "content-class".equals(requestedHeaders[0]) && message.contentClass != null) { baos.write("Content-class: ".getBytes("UTF-8")); baos.write(message.contentClass.getBytes("UTF-8")); baos.write(13); baos.write(10); } else { Enumeration headerEnumeration = message.getMatchingHeaderLines(requestedHeaders); while (headerEnumeration.hasMoreElements()) { baos.write(((String) headerEnumeration.nextElement()).getBytes("UTF-8")); baos.write(13); baos.write(10); } } } else { // write headers only partOutputStream = new PartOutputStream(baos, true, false, startIndex, maxSize); partInputStream = message.getRawInputStream(); } } else { MimePart bodyPart = message.getMimeMessage(); String[] partIndexStrings = partIndexString.split("\\."); for (String subPartIndexString : partIndexStrings) { // ignore MIME subpart index, will return full part if ("MIME".equals(subPartIndexString)) { break; } int subPartIndex; // try to parse part index try { subPartIndex = Integer.parseInt(subPartIndexString); } catch (NumberFormatException e) { throw new DavMailException("EXCEPTION_INVALID_PARAMETER", param); } Object mimeBody = bodyPart.getContent(); if (mimeBody instanceof MimeMultipart) { MimeMultipart multiPart = (MimeMultipart) mimeBody; if (subPartIndex - 1 < multiPart.getCount()) { bodyPart = (MimePart) multiPart.getBodyPart(subPartIndex - 1); } else { throw new DavMailException("EXCEPTION_INVALID_PARAMETER", param); } } else if (subPartIndex != 1) { throw new DavMailException("EXCEPTION_INVALID_PARAMETER", param); } } // write selected part, without headers partOutputStream = new PartialOutputStream(baos, startIndex, maxSize); if (bodyPart instanceof MimeMessage) { partInputStream = ((MimeMessage) bodyPart).getRawInputStream(); } else { partInputStream = ((MimeBodyPart) bodyPart).getRawInputStream(); } } // copy selected content to baos if (partInputStream != null && partOutputStream != null) { IOUtil.write(partInputStream, partOutputStream); partInputStream.close(); partOutputStream.close(); } baos.close(); if ("RFC822.HEADER".equals(param)) { buffer.append(" RFC822.HEADER "); } else { buffer.append(" BODY[").append(partIndexString).append(']'); } // partial if (startIndex > 0 || maxSize != Integer.MAX_VALUE) { buffer.append('<').append(startIndex).append('>'); } buffer.append(" {").append(baos.size()).append('}'); sendClient(buffer.toString()); // log content if less than 2K if (LOGGER.isDebugEnabled() && baos.size() < 2048) { LOGGER.debug(new String(baos.toByteArray(), "UTF-8")); } os.write(baos.toByteArray()); os.flush(); buffer.setLength(0); } } } buffer.append(')'); sendClient(buffer.toString()); // do not keep message content in memory message.dropMimeMessage(); } protected String[] getRequestedHeaders(String partIndexString) { if (partIndexString == null) { return null; } else { int startIndex = partIndexString.indexOf('('); int endIndex = partIndexString.indexOf(')'); if (startIndex >= 0 && endIndex >= 0) { return partIndexString.substring(startIndex + 1, endIndex).split(" "); } else { return null; } } } protected void handleStore(String commandId, AbstractRangeIterator rangeIterator, String action, String flags) throws IOException { while (rangeIterator.hasNext()) { DavGatewayTray.switchIcon(); ExchangeSession.Message message = rangeIterator.next(); updateFlags(message, action, flags); sendClient("* " + (rangeIterator.getCurrentIndex()) + " FETCH (UID " + message.getImapUid() + " FLAGS (" + (message.getImapFlags()) + "))"); } // auto expunge if (Settings.getBooleanProperty("davmail.imapAutoExpunge")) { if (expunge(false)) { session.refreshFolder(currentFolder); } } sendClient(commandId + " OK STORE completed"); } protected ExchangeSession.Condition buildConditions(SearchConditions conditions, IMAPTokenizer tokens) throws IOException { ExchangeSession.MultiCondition condition = null; while (tokens.hasMoreTokens()) { String token = tokens.nextQuotedToken().toUpperCase(); if (token.startsWith("(") && token.endsWith(")")) { // quoted search param if (condition == null) { condition = session.and(); } condition.add( buildConditions(conditions, new IMAPTokenizer(token.substring(1, token.length() - 1)))); } else if ("OR".equals(token)) { condition = session.or(); } else if (token.startsWith("OR ")) { condition = appendOrSearchParams(token, conditions); } else if ("CHARSET".equals(token)) { String charset = tokens.nextQuotedToken().toUpperCase(); if (!("ASCII".equals(charset) || "UTF-8".equals(charset))) { throw new IOException("Unsupported charset " + charset); } } else { if (condition == null) { condition = session.and(); } condition.add(appendSearchParam(tokens, token, conditions)); } } return condition; } protected List<Long> handleSearch(IMAPTokenizer tokens) throws IOException { List<Long> uidList = new ArrayList<Long>(); List<Long> localMessagesUidList = null; SearchConditions conditions = new SearchConditions(); ExchangeSession.Condition condition = buildConditions(conditions, tokens); session.refreshFolder(currentFolder); ExchangeSession.MessageList localMessages = currentFolder.searchMessages(condition); Iterator<ExchangeSession.Message> iterator; if (conditions.uidRange != null) { iterator = new UIDRangeIterator(localMessages, conditions.uidRange); } else if (conditions.indexRange != null) { // range iterator is on folder messages, not messages returned from search iterator = new RangeIterator(currentFolder.messages, conditions.indexRange); localMessagesUidList = new ArrayList<Long>(); // build search result uid list for (ExchangeSession.Message message : localMessages) { localMessagesUidList.add(message.getImapUid()); } } else { iterator = localMessages.iterator(); } while (iterator.hasNext()) { ExchangeSession.Message message = iterator.next(); if ((conditions.flagged == null || message.flagged == conditions.flagged) && (conditions.answered == null || message.answered == conditions.answered) && (conditions.draft == null || message.draft == conditions.draft) // range iterator: include messages available in search result && (localMessagesUidList == null || localMessagesUidList.contains(message.getImapUid()))) { uidList.add(message.getImapUid()); } } return uidList; } protected void appendEnvelope(StringBuilder buffer, ExchangeSession.Message message) throws IOException { buffer.append(" ENVELOPE ("); try { MimeMessage mimeMessage = message.getMimeMessage(); // Envelope for date, subject, from, sender, reply-to, to, cc, bcc,in-reply-to, message-id appendEnvelopeHeader(buffer, mimeMessage.getHeader("Date")); appendEnvelopeHeader(buffer, mimeMessage.getHeader("Subject")); appendMailEnvelopeHeader(buffer, mimeMessage.getHeader("From")); appendMailEnvelopeHeader(buffer, mimeMessage.getHeader("Sender")); appendMailEnvelopeHeader(buffer, mimeMessage.getHeader("Reply-To")); appendMailEnvelopeHeader(buffer, mimeMessage.getHeader("To")); appendMailEnvelopeHeader(buffer, mimeMessage.getHeader("CC")); appendMailEnvelopeHeader(buffer, mimeMessage.getHeader("BCC")); appendEnvelopeHeader(buffer, mimeMessage.getHeader("In-Reply-To")); appendEnvelopeHeader(buffer, mimeMessage.getHeader("Message-Id")); } catch (MessagingException me) { DavGatewayTray.warn(me); // send fake envelope buffer.append(" NIL NIL NIL NIL NIL NIL NIL NIL NIL NIL"); } buffer.append(')'); } protected void appendEnvelopeHeader(StringBuilder buffer, String[] value) throws UnsupportedEncodingException { if (buffer.charAt(buffer.length() - 1) != '(') { buffer.append(' '); } if (value != null && value.length > 0) { appendEnvelopeHeaderValue(buffer, MimeUtility.unfold(value[0])); } else { buffer.append("NIL"); } } protected void appendMailEnvelopeHeader(StringBuilder buffer, String[] value) { buffer.append(' '); if (value != null && value.length > 0) { try { String unfoldedValue = MimeUtility.unfold(value[0]); InternetAddress[] addresses = InternetAddress.parseHeader(unfoldedValue, false); if (addresses != null && addresses.length > 0) { buffer.append('('); for (InternetAddress address : addresses) { buffer.append('('); String personal = address.getPersonal(); if (personal != null) { appendEnvelopeHeaderValue(buffer, personal); } else { buffer.append("NIL"); } buffer.append(" NIL "); String mail = address.getAddress(); int atIndex = mail.indexOf('@'); if (atIndex >= 0) { buffer.append('"').append(mail.substring(0, atIndex)).append('"'); buffer.append(' '); buffer.append('"').append(mail.substring(atIndex + 1)).append('"'); } else { buffer.append("NIL NIL"); } buffer.append(')'); } buffer.append(')'); } else { buffer.append("NIL"); } } catch (AddressException e) { DavGatewayTray.warn(e); buffer.append("NIL"); } catch (UnsupportedEncodingException e) { DavGatewayTray.warn(e); buffer.append("NIL"); } } else { buffer.append("NIL"); } } protected void appendEnvelopeHeaderValue(StringBuilder buffer, String value) throws UnsupportedEncodingException { if (value.indexOf('"') >= 0 || value.indexOf('\\') >= 0) { buffer.append('{'); buffer.append(value.length()); buffer.append("}\r\n"); buffer.append(value); } else { buffer.append('"'); buffer.append(MimeUtility.encodeText(value, "UTF-8", null)); buffer.append('"'); } } protected void appendBodyStructure(StringBuilder buffer, ExchangeSession.Message message) throws IOException { buffer.append(" BODYSTRUCTURE "); try { MimeMessage mimeMessage = message.getMimeMessage(); Object mimeBody = mimeMessage.getContent(); if (mimeBody instanceof MimeMultipart) { appendBodyStructure(buffer, (MimeMultipart) mimeBody); } else { // no multipart, single body appendBodyStructure(buffer, mimeMessage); } } catch (UnsupportedEncodingException e) { DavGatewayTray.warn(e); // failover: send default bodystructure buffer.append("(\"TEXT\" \"PLAIN\" (\"CHARSET\" \"US-ASCII\") NIL NIL NIL NIL NIL)"); } catch (MessagingException me) { DavGatewayTray.warn(me); // failover: send default bodystructure buffer.append("(\"TEXT\" \"PLAIN\" (\"CHARSET\" \"US-ASCII\") NIL NIL NIL NIL NIL)"); } } protected void appendBodyStructure(StringBuilder buffer, MimeMultipart multiPart) throws IOException, MessagingException { buffer.append('('); for (int i = 0; i < multiPart.getCount(); i++) { MimeBodyPart bodyPart = (MimeBodyPart) multiPart.getBodyPart(i); try { Object mimeBody = bodyPart.getContent(); if (mimeBody instanceof MimeMultipart) { appendBodyStructure(buffer, (MimeMultipart) mimeBody); } else { // no multipart, single body appendBodyStructure(buffer, bodyPart); } } catch (UnsupportedEncodingException e) { LOGGER.warn(e); // failover: send default bodystructure buffer.append("(\"TEXT\" \"PLAIN\" (\"CHARSET\" \"US-ASCII\") NIL NIL NIL NIL NIL)"); } catch (MessagingException me) { DavGatewayTray.warn(me); // failover: send default bodystructure buffer.append("(\"TEXT\" \"PLAIN\" (\"CHARSET\" \"US-ASCII\") NIL NIL NIL NIL NIL)"); } } int slashIndex = multiPart.getContentType().indexOf('/'); if (slashIndex < 0) { throw new DavMailException("EXCEPTION_INVALID_CONTENT_TYPE", multiPart.getContentType()); } int semiColonIndex = multiPart.getContentType().indexOf(';'); if (semiColonIndex < 0) { buffer.append(" \"").append(multiPart.getContentType().substring(slashIndex + 1).toUpperCase()) .append("\")"); } else { buffer.append(" \"").append( multiPart.getContentType().substring(slashIndex + 1, semiColonIndex).trim().toUpperCase()) .append("\")"); } } protected void appendBodyStructure(StringBuilder buffer, MimePart bodyPart) throws IOException, MessagingException { String contentType = MimeUtility.unfold(bodyPart.getContentType()); int slashIndex = contentType.indexOf('/'); if (slashIndex < 0) { throw new DavMailException("EXCEPTION_INVALID_CONTENT_TYPE", contentType); } String type = contentType.substring(0, slashIndex).toUpperCase(); buffer.append("(\"").append(type).append("\" \""); int semiColonIndex = contentType.indexOf(';'); if (semiColonIndex < 0) { buffer.append(contentType.substring(slashIndex + 1).toUpperCase()).append("\" NIL"); } else { // extended content type buffer.append(contentType.substring(slashIndex + 1, semiColonIndex).trim().toUpperCase()).append('\"'); int charsetindex = contentType.indexOf("charset="); int nameindex = contentType.indexOf("name="); if (charsetindex >= 0 || nameindex >= 0) { buffer.append(" ("); if (charsetindex >= 0) { buffer.append("\"CHARSET\" "); int charsetSemiColonIndex = contentType.indexOf(';', charsetindex); int charsetEndIndex; if (charsetSemiColonIndex > 0) { charsetEndIndex = charsetSemiColonIndex; } else { charsetEndIndex = contentType.length(); } String charSet = contentType.substring(charsetindex + "charset=".length(), charsetEndIndex); if (!charSet.startsWith("\"")) { buffer.append('"'); } buffer.append(charSet.trim().toUpperCase()); if (!charSet.endsWith("\"")) { buffer.append('"'); } } if (nameindex >= 0) { if (charsetindex >= 0) { buffer.append(' '); } buffer.append("\"NAME\" "); int nameSemiColonIndex = contentType.indexOf(';', nameindex); int nameEndIndex; if (nameSemiColonIndex > 0) { nameEndIndex = nameSemiColonIndex; } else { nameEndIndex = contentType.length(); } String name = contentType.substring(nameindex + "name=".length(), nameEndIndex).trim(); if (!name.startsWith("\"")) { buffer.append('"'); } buffer.append(name.trim()); if (!name.endsWith("\"")) { buffer.append('"'); } } buffer.append(')'); } else { buffer.append(" NIL"); } } appendBodyStructureValue(buffer, bodyPart.getContentID()); appendBodyStructureValue(buffer, bodyPart.getDescription()); appendBodyStructureValue(buffer, bodyPart.getEncoding()); appendBodyStructureValue(buffer, bodyPart.getSize()); if ("MESSAGE".equals(type) || "TEXT".equals(type)) { // line count not implemented in JavaMail, return fake line count appendBodyStructureValue(buffer, bodyPart.getSize() / 80); } else { // do not send line count for non text bodyparts appendBodyStructureValue(buffer, -1); } buffer.append(')'); } protected void appendBodyStructureValue(StringBuilder buffer, String value) { if (value == null) { buffer.append(" NIL"); } else { buffer.append(" \"").append(value.toUpperCase()).append('\"'); } } protected void appendBodyStructureValue(StringBuilder buffer, int value) { if (value < 0) { buffer.append(" NIL"); } else { buffer.append(' ').append(value); } } protected void sendSubFolders(String command, String folderPath, boolean recursive) throws IOException { try { List<ExchangeSession.Folder> folders = session.getSubFolders(folderPath, recursive); for (ExchangeSession.Folder folder : folders) { sendClient("* " + command + " (" + folder.getFlags() + ") \"/\" \"" + BASE64MailboxEncoder.encode(folder.folderPath) + '\"'); } } catch (HttpForbiddenException e) { // access forbidden, ignore DavGatewayTray.debug(new BundleMessage("LOG_SUBFOLDER_ACCESS_FORBIDDEN", folderPath)); } catch (HttpNotFoundException e) { // not found, ignore DavGatewayTray.debug(new BundleMessage("LOG_FOLDER_NOT_FOUND", folderPath)); } catch (HttpException e) { // other errors, ignore DavGatewayTray.debug(new BundleMessage("LOG_FOLDER_ACCESS_ERROR", folderPath, e.getMessage())); } } /** * client side search conditions */ static final class SearchConditions { Boolean flagged; Boolean answered; Boolean draft; String indexRange; String uidRange; } protected ExchangeSession.MultiCondition appendOrSearchParams(String token, SearchConditions conditions) throws IOException { ExchangeSession.MultiCondition orCondition = session.or(); IMAPTokenizer innerTokens = new IMAPTokenizer(token); innerTokens.nextToken(); while (innerTokens.hasMoreTokens()) { String innerToken = innerTokens.nextToken(); orCondition.add(appendSearchParam(innerTokens, innerToken, conditions)); } return orCondition; } protected ExchangeSession.Condition appendSearchParam(StringTokenizer tokens, String token, SearchConditions conditions) throws IOException { if ("NOT".equals(token)) { String nextToken = tokens.nextToken(); if ("DELETED".equals(nextToken)) { // conditions.deleted = Boolean.FALSE; return session.isNull("deleted"); } else { return session.not(appendSearchParam(tokens, nextToken, conditions)); } } else if (token.startsWith("OR ")) { return appendOrSearchParams(token, conditions); } else if ("SUBJECT".equals(token)) { return session.contains("subject", tokens.nextToken()); } else if ("BODY".equals(token)) { return session.contains("body", tokens.nextToken()); } else if ("TEXT".equals(token)) { String value = tokens.nextToken(); return session.or(session.contains("body", value), session.contains("subject", value), session.contains("from", value), session.contains("to", value), session.contains("cc", value)); } else if ("KEYWORD".equals(token)) { return session.contains("keywords", session.convertFlagToKeyword(tokens.nextToken())); } else if ("FROM".equals(token)) { return session.contains("from", tokens.nextToken()); } else if ("TO".equals(token)) { return session.contains("to", tokens.nextToken()); } else if ("CC".equals(token)) { return session.contains("cc", tokens.nextToken()); } else if ("LARGER".equals(token)) { return session.gte("messageSize", tokens.nextToken()); } else if ("SMALLER".equals(token)) { return session.lt("messageSize", tokens.nextToken()); } else if (token.startsWith("SENT") || "SINCE".equals(token) || "BEFORE".equals(token)) { return appendDateSearchParam(tokens, token); } else if ("SEEN".equals(token)) { return session.isTrue("read"); } else if ("UNSEEN".equals(token) || "NEW".equals(token)) { return session.isFalse("read"); } else if ("DRAFT".equals(token)) { conditions.draft = Boolean.TRUE; } else if ("UNDRAFT".equals(token)) { conditions.draft = Boolean.FALSE; } else if ("DELETED".equals(token)) { // conditions.deleted = Boolean.TRUE; return session.isEqualTo("deleted", "1"); } else if ("UNDELETED".equals(token) || "NOT DELETED".equals(token)) { // conditions.deleted = Boolean.FALSE; return session.isNull("deleted"); } else if ("FLAGGED".equals(token)) { conditions.flagged = Boolean.TRUE; } else if ("UNFLAGGED".equals(token) || "NEW".equals(token)) { conditions.flagged = Boolean.FALSE; } else if ("ANSWERED".equals(token)) { conditions.answered = Boolean.TRUE; } else if ("UNANSWERED".equals(token)) { conditions.answered = Boolean.FALSE; } else if ("HEADER".equals(token)) { String headerName = tokens.nextToken().toLowerCase(); String value = tokens.nextToken(); if ("message-id".equals(headerName) && !value.startsWith("<")) { value = '<' + value + '>'; } return session.headerIsEqualTo(headerName, value); } else if ("UID".equals(token)) { String range = tokens.nextToken(); if ("1:*".equals(range)) { // ignore: this is a noop filter } else { conditions.uidRange = range; } } else if ("OLD".equals(token) || "RECENT".equals(token) || "ALL".equals(token)) { // ignore } else if (token.indexOf(':') >= 0 || token.matches("\\d+")) { // range search conditions.indexRange = token; } else { throw new DavMailException("EXCEPTION_INVALID_SEARCH_PARAMETERS", token); } // client side search token return null; } protected ExchangeSession.Condition appendDateSearchParam(StringTokenizer tokens, String token) throws IOException { Date startDate; Date endDate; SimpleDateFormat parser = new SimpleDateFormat("dd-MMM-yyyy", Locale.ENGLISH); parser.setTimeZone(ExchangeSession.GMT_TIMEZONE); String dateToken = tokens.nextToken(); try { startDate = parser.parse(dateToken); Calendar calendar = Calendar.getInstance(); calendar.setTime(startDate); calendar.add(Calendar.DAY_OF_MONTH, 1); endDate = calendar.getTime(); } catch (ParseException e) { throw new DavMailException("EXCEPTION_INVALID_SEARCH_PARAMETERS", dateToken); } String searchAttribute; if (token.startsWith("SENT")) { searchAttribute = "date"; } else { searchAttribute = "lastmodified"; } if (token.endsWith("ON")) { return session.and(session.gt(searchAttribute, session.formatSearchDate(startDate)), session.lt(searchAttribute, session.formatSearchDate(endDate))); } else if (token.endsWith("BEFORE")) { return session.lt(searchAttribute, session.formatSearchDate(startDate)); } else if (token.endsWith("SINCE")) { return session.gte(searchAttribute, session.formatSearchDate(startDate)); } else { throw new DavMailException("EXCEPTION_INVALID_SEARCH_PARAMETERS", dateToken); } } protected boolean expunge(boolean silent) throws IOException { boolean hasDeleted = false; if (currentFolder.messages != null) { int index = 1; for (ExchangeSession.Message message : currentFolder.messages) { if (message.deleted) { message.delete(); hasDeleted = true; if (!silent) { sendClient("* " + index + " EXPUNGE"); } } else { index++; } } } return hasDeleted; } protected void updateFlags(ExchangeSession.Message message, String action, String flags) throws IOException { HashMap<String, String> properties = new HashMap<String, String>(); if ("-Flags".equalsIgnoreCase(action) || "-FLAGS.SILENT".equalsIgnoreCase(action)) { StringTokenizer flagtokenizer = new StringTokenizer(flags); while (flagtokenizer.hasMoreTokens()) { String flag = flagtokenizer.nextToken(); if ("\\Seen".equalsIgnoreCase(flag)) { if (message.read) { properties.put("read", "0"); message.read = false; } } else if ("\\Flagged".equalsIgnoreCase(flag)) { if (message.flagged) { properties.put("flagged", "0"); message.flagged = false; } } else if ("\\Deleted".equalsIgnoreCase(flag)) { if (message.deleted) { properties.put("deleted", null); message.deleted = false; } } else if ("Junk".equalsIgnoreCase(flag)) { if (message.junk) { properties.put("junk", "0"); message.junk = false; } } else if ("$Forwarded".equalsIgnoreCase(flag)) { if (message.forwarded) { properties.put("forwarded", null); message.forwarded = false; } } else if ("\\Answered".equalsIgnoreCase(flag)) { if (message.answered) { properties.put("answered", null); message.answered = false; } } else if (message.keywords != null) { properties.put("keywords", message.removeFlag(flag)); } } } else if ("+Flags".equalsIgnoreCase(action) || "+FLAGS.SILENT".equalsIgnoreCase(action)) { StringTokenizer flagtokenizer = new StringTokenizer(flags); while (flagtokenizer.hasMoreTokens()) { String flag = flagtokenizer.nextToken(); if ("\\Seen".equalsIgnoreCase(flag)) { if (!message.read) { properties.put("read", "1"); message.read = true; } } else if ("\\Deleted".equalsIgnoreCase(flag)) { if (!message.deleted) { message.deleted = true; properties.put("deleted", "1"); } } else if ("\\Flagged".equalsIgnoreCase(flag)) { if (!message.flagged) { properties.put("flagged", "2"); message.flagged = true; } } else if ("\\Answered".equalsIgnoreCase(flag)) { if (!message.answered) { properties.put("answered", "102"); message.answered = true; } } else if ("$Forwarded".equalsIgnoreCase(flag)) { if (!message.forwarded) { properties.put("forwarded", "104"); message.forwarded = true; } } else if ("Junk".equalsIgnoreCase(flag)) { if (!message.junk) { properties.put("junk", "1"); message.junk = true; } } else { properties.put("keywords", message.addFlag(flag)); } } } else if ("FLAGS".equalsIgnoreCase(action) || "FLAGS.SILENT".equalsIgnoreCase(action)) { // flag list with default values boolean read = false; boolean deleted = false; boolean junk = false; boolean flagged = false; boolean answered = false; boolean forwarded = false; HashSet<String> keywords = null; // set flags from new flag list StringTokenizer flagtokenizer = new StringTokenizer(flags); while (flagtokenizer.hasMoreTokens()) { String flag = flagtokenizer.nextToken(); if ("\\Seen".equalsIgnoreCase(flag)) { read = true; } else if ("\\Deleted".equalsIgnoreCase(flag)) { deleted = true; } else if ("\\Flagged".equalsIgnoreCase(flag)) { flagged = true; } else if ("\\Answered".equalsIgnoreCase(flag)) { answered = true; } else if ("$Forwarded".equalsIgnoreCase(flag)) { forwarded = true; } else if ("Junk".equalsIgnoreCase(flag)) { junk = true; } else { if (keywords == null) { keywords = new HashSet<String>(); } keywords.add(flag); } } if (keywords != null) { properties.put("keywords", message.setFlags(keywords)); } if (read != message.read) { message.read = read; if (message.read) { properties.put("read", "1"); } else { properties.put("read", "0"); } } if (deleted != message.deleted) { message.deleted = deleted; if (message.deleted) { properties.put("deleted", "1"); } else { properties.put("deleted", null); } } if (flagged != message.flagged) { message.flagged = flagged; if (message.flagged) { properties.put("flagged", "2"); } else { properties.put("flagged", "0"); } } if (answered != message.answered) { message.answered = answered; if (message.answered) { properties.put("answered", "102"); } else if (!forwarded) { // remove property only if not forwarded properties.put("answered", null); } } if (forwarded != message.forwarded) { message.forwarded = forwarded; if (message.forwarded) { properties.put("forwarded", "104"); } else if (!answered) { // remove property only if not answered properties.put("forwarded", null); } } if (junk != message.junk) { message.junk = junk; if (message.junk) { properties.put("junk", "1"); } else { properties.put("junk", "0"); } } } if (!properties.isEmpty()) { session.updateMessage(message, properties); // message is no longer recent message.recent = false; } } /** * Decode IMAP credentials * * @param tokens tokens * @throws IOException on error */ protected void parseCredentials(StringTokenizer tokens) throws IOException { if (tokens.hasMoreTokens()) { userName = tokens.nextToken(); } else { throw new DavMailException("EXCEPTION_INVALID_CREDENTIALS"); } if (tokens.hasMoreTokens()) { password = tokens.nextToken(); } else { throw new DavMailException("EXCEPTION_INVALID_CREDENTIALS"); } int backslashindex = userName.indexOf('\\'); if (backslashindex > 0) { userName = userName.substring(0, backslashindex) + userName.substring(backslashindex + 1); } } /** * Filter to output only headers, also count full size */ private static final class PartOutputStream extends FilterOutputStream { private static final int START = 0; private static final int CR = 1; private static final int CRLF = 2; private static final int CRLFCR = 3; private static final int BODY = 4; private int state = START; private int size; private int bufferSize; private final boolean writeHeaders; private final boolean writeBody; private final int startIndex; private final int maxSize; private PartOutputStream(OutputStream os, boolean writeHeaders, boolean writeBody, int startIndex, int maxSize) { super(os); this.writeHeaders = writeHeaders; this.writeBody = writeBody; this.startIndex = startIndex; this.maxSize = maxSize; } @Override public void write(int b) throws IOException { size++; if (((state != BODY && writeHeaders) || (state == BODY && writeBody)) && (size > startIndex) && (bufferSize < maxSize)) { super.write(b); bufferSize++; } if (state == START) { if (b == '\r') { state = CR; } } else if (state == CR) { if (b == '\n') { state = CRLF; } else { state = START; } } else if (state == CRLF) { if (b == '\r') { state = CRLFCR; } else { state = START; } } else if (state == CRLFCR) { if (b == '\n') { state = BODY; } else { state = START; } } } } /** * Partial output stream, start at startIndex and write maxSize bytes. */ private static final class PartialOutputStream extends FilterOutputStream { private int size; private int bufferSize; private final int startIndex; private final int maxSize; private PartialOutputStream(OutputStream os, int startIndex, int maxSize) { super(os); this.startIndex = startIndex; this.maxSize = maxSize; } @Override public void write(int b) throws IOException { size++; if ((size > startIndex) && (bufferSize < maxSize)) { super.write(b); bufferSize++; } } } protected abstract static class AbstractRangeIterator implements Iterator<ExchangeSession.Message> { ExchangeSession.MessageList messages; int currentIndex; protected int getCurrentIndex() { return currentIndex; } } protected static class UIDRangeIterator extends AbstractRangeIterator { final String[] ranges; int currentRangeIndex; long startUid; long endUid; protected UIDRangeIterator(ExchangeSession.MessageList messages, String value) { this.messages = messages; ranges = value.split(","); } protected long convertToLong(String value) { if ("*".equals(value)) { return Long.MAX_VALUE; } else { return Long.parseLong(value); } } protected void skipToNextRangeStartUid() { if (currentRangeIndex < ranges.length) { String currentRange = ranges[currentRangeIndex++]; int colonIndex = currentRange.indexOf(':'); if (colonIndex > 0) { startUid = convertToLong(currentRange.substring(0, colonIndex)); endUid = convertToLong(currentRange.substring(colonIndex + 1)); if (endUid < startUid) { long swap = endUid; endUid = startUid; startUid = swap; } } else if ("*".equals(currentRange)) { startUid = endUid = messages.get(messages.size() - 1).getImapUid(); } else { startUid = endUid = convertToLong(currentRange); } while (currentIndex < messages.size() && messages.get(currentIndex).getImapUid() < startUid) { currentIndex++; } } else { currentIndex = messages.size(); } } protected boolean hasNextInRange() { return hasNextIndex() && messages.get(currentIndex).getImapUid() <= endUid; } protected boolean hasNextIndex() { return currentIndex < messages.size(); } protected boolean hasNextRange() { return currentRangeIndex < ranges.length; } public boolean hasNext() { boolean hasNextInRange = hasNextInRange(); // if has next range and current index after current range end, reset index if (hasNextRange() && !hasNextInRange) { currentIndex = 0; } while (hasNextIndex() && !hasNextInRange) { skipToNextRangeStartUid(); hasNextInRange = hasNextInRange(); } return hasNextIndex(); } public ExchangeSession.Message next() { ExchangeSession.Message message = messages.get(currentIndex++); long uid = message.getImapUid(); if (uid < startUid || uid > endUid) { throw new RuntimeException("Message uid " + uid + " not in range " + startUid + ':' + endUid); } return message; } public void remove() { throw new UnsupportedOperationException(); } } protected static class RangeIterator extends AbstractRangeIterator { final String[] ranges; int currentRangeIndex; long startUid; long endUid; protected RangeIterator(ExchangeSession.MessageList messages, String value) { this.messages = messages; ranges = value.split(","); } protected long convertToLong(String value) { if ("*".equals(value)) { return Long.MAX_VALUE; } else { return Long.parseLong(value); } } protected void skipToNextRangeStart() { if (currentRangeIndex < ranges.length) { String currentRange = ranges[currentRangeIndex++]; int colonIndex = currentRange.indexOf(':'); if (colonIndex > 0) { startUid = convertToLong(currentRange.substring(0, colonIndex)); endUid = convertToLong(currentRange.substring(colonIndex + 1)); if (endUid < startUid) { long swap = endUid; endUid = startUid; startUid = swap; } } else if ("*".equals(currentRange)) { startUid = endUid = messages.size(); } else { startUid = endUid = convertToLong(currentRange); } while (currentIndex < messages.size() && (currentIndex + 1) < startUid) { currentIndex++; } } else { currentIndex = messages.size(); } } protected boolean hasNextInRange() { return hasNextIndex() && currentIndex < endUid; } protected boolean hasNextIndex() { return currentIndex < messages.size(); } protected boolean hasNextRange() { return currentRangeIndex < ranges.length; } public boolean hasNext() { boolean hasNextInRange = hasNextInRange(); // if has next range and current index after current range end, reset index if (hasNextRange() && !hasNextInRange) { currentIndex = 0; } while (hasNextIndex() && !hasNextInRange) { skipToNextRangeStart(); hasNextInRange = hasNextInRange(); } return hasNextIndex(); } public ExchangeSession.Message next() { return messages.get(currentIndex++); } public void remove() { throw new UnsupportedOperationException(); } } class IMAPTokenizer extends StringTokenizer { IMAPTokenizer(String value) { super(value); } @Override public String nextToken() { return StringUtil.removeQuotes(nextQuotedToken()); } public String nextQuotedToken() { StringBuilder nextToken = new StringBuilder(); nextToken.append(super.nextToken()); while (hasMoreTokens() && nextToken.length() > 0 && nextToken.charAt(0) == '"' && (nextToken.charAt(nextToken.length() - 1) != '"' || nextToken.length() == 1)) { nextToken.append(' ').append(super.nextToken()); } while (hasMoreTokens() && nextToken.length() > 0 && nextToken.charAt(0) == '(' && nextToken.charAt(nextToken.length() - 1) != ')') { nextToken.append(' ').append(super.nextToken()); } while (hasMoreTokens() && nextToken.length() > 0 && nextToken.indexOf("[") != -1 && nextToken.charAt(nextToken.length() - 1) != ']') { nextToken.append(' ').append(super.nextToken()); } return nextToken.toString(); } } }