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k-9/src/com/fsck/k9/mail/store/ImapStore.java

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package com.fsck.k9.mail.store;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.util.Log;
import com.fsck.k9.Account;
import com.fsck.k9.K9;
import com.fsck.k9.PeekableInputStream;
import com.fsck.k9.Utility;
import com.fsck.k9.mail.*;
import com.fsck.k9.mail.internet.*;
import com.fsck.k9.mail.store.ImapResponseParser.ImapList;
import com.fsck.k9.mail.store.ImapResponseParser.ImapResponse;
import com.fsck.k9.mail.transport.CountingOutputStream;
import com.fsck.k9.mail.transport.EOLConvertingOutputStream;
import com.jcraft.jzlib.JZlib;
import com.jcraft.jzlib.ZInputStream;
import com.jcraft.jzlib.ZOutputStream;
import com.beetstra.jutf7.CharsetProvider;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLException;
import javax.net.ssl.TrustManager;
import org.apache.commons.codec.binary.Base64;
import org.apache.commons.codec.binary.Hex;
import java.io.*;
import java.net.*;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.Charset;
import java.security.GeneralSecurityException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.security.Security;
import java.util.*;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
/**
* <pre>
* TODO Need to start keeping track of UIDVALIDITY
* TODO Need a default response handler for things like folder updates
* TODO In fetch(), if we need a ImapMessage and were given
* something else we can try to do a pre-fetch first.
* </pre>
*/
public class ImapStore extends Store
{
public static final int CONNECTION_SECURITY_NONE = 0;
public static final int CONNECTION_SECURITY_TLS_OPTIONAL = 1;
public static final int CONNECTION_SECURITY_TLS_REQUIRED = 2;
public static final int CONNECTION_SECURITY_SSL_REQUIRED = 3;
public static final int CONNECTION_SECURITY_SSL_OPTIONAL = 4;
private enum AuthType { PLAIN, CRAM_MD5 };
private static final int IDLE_READ_TIMEOUT = 29 * 60 * 1000; // 29 minutes
private static final int IDLE_REFRESH_INTERVAL = 20 * 60 * 1000; // 20 minutes
private static final Flag[] PERMANENT_FLAGS = { Flag.DELETED, Flag.SEEN };
private static final String CAPABILITY_IDLE = "IDLE";
private static final String COMMAND_IDLE = "IDLE";
private static final String CAPABILITY_NAMESPACE = "NAMESPACE";
private static final String COMMAND_NAMESPACE = "NAMESPACE";
private static final String CAPABILITY_CAPABILITY = "CAPABILITY";
private static final String COMMAND_CAPABILITY = "CAPABILITY";
private static final String CAPABILITY_COMPRESS_DEFLATE = "COMPRESS=DEFLATE";
private static final String COMMAND_COMPRESS_DEFLATE = "COMPRESS DEFLATE";
private String mHost;
private int mPort;
private String mUsername;
private String mPassword;
private int mConnectionSecurity;
private AuthType mAuthType;
private volatile String mPathPrefix;
private volatile String mCombinedPrefix = null;
private volatile String mPathDelimeter = null;
private LinkedList<ImapConnection> mConnections =
new LinkedList<ImapConnection>();
/**
* Charset used for converting folder names to and from UTF-7 as defined by RFC 3501.
*/
private Charset mModifiedUtf7Charset;
/**
* Cache of ImapFolder objects. ImapFolders are attached to a given folder on the server
* and as long as their associated connection remains open they are reusable between
* requests. This cache lets us make sure we always reuse, if possible, for a given
* folder name.
*/
private HashMap<String, ImapFolder> mFolderCache = new HashMap<String, ImapFolder>();
/**
* imap://auth:user:password@server:port CONNECTION_SECURITY_NONE
* imap+tls://auth:user:password@server:port CONNECTION_SECURITY_TLS_OPTIONAL
* imap+tls+://auth:user:password@server:port CONNECTION_SECURITY_TLS_REQUIRED
* imap+ssl+://auth:user:password@server:port CONNECTION_SECURITY_SSL_REQUIRED
* imap+ssl://auth:user:password@server:port CONNECTION_SECURITY_SSL_OPTIONAL
*
* @param _uri
*/
public ImapStore(Account account) throws MessagingException
{
super(account);
URI uri;
try
{
uri = new URI(mAccount.getStoreUri());
}
catch (URISyntaxException use)
{
throw new MessagingException("Invalid ImapStore URI", use);
}
String scheme = uri.getScheme();
if (scheme.equals("imap"))
{
mConnectionSecurity = CONNECTION_SECURITY_NONE;
mPort = 143;
}
else if (scheme.equals("imap+tls"))
{
mConnectionSecurity = CONNECTION_SECURITY_TLS_OPTIONAL;
mPort = 143;
}
else if (scheme.equals("imap+tls+"))
{
mConnectionSecurity = CONNECTION_SECURITY_TLS_REQUIRED;
mPort = 143;
}
else if (scheme.equals("imap+ssl+"))
{
mConnectionSecurity = CONNECTION_SECURITY_SSL_REQUIRED;
mPort = 993;
}
else if (scheme.equals("imap+ssl"))
{
mConnectionSecurity = CONNECTION_SECURITY_SSL_OPTIONAL;
mPort = 993;
}
else
{
throw new MessagingException("Unsupported protocol");
}
mHost = uri.getHost();
if (uri.getPort() != -1)
{
mPort = uri.getPort();
}
if (uri.getUserInfo() != null)
{
try
{
String[] userInfoParts = uri.getUserInfo().split(":");
if (userInfoParts.length == 2)
{
mAuthType = AuthType.PLAIN;
mUsername = URLDecoder.decode(userInfoParts[0], "UTF-8");
mPassword = URLDecoder.decode(userInfoParts[1], "UTF-8");
}
else
{
mAuthType = AuthType.valueOf(userInfoParts[0]);
mUsername = URLDecoder.decode(userInfoParts[1], "UTF-8");
mPassword = URLDecoder.decode(userInfoParts[2], "UTF-8");
}
}
catch (UnsupportedEncodingException enc)
{
// This shouldn't happen since the encoding is hardcoded to UTF-8
Log.e(K9.LOG_TAG, "Couldn't urldecode username or password.", enc);
}
}
if ((uri.getPath() != null) && (uri.getPath().length() > 0))
{
mPathPrefix = uri.getPath().substring(1);
if (mPathPrefix != null && mPathPrefix.trim().length() == 0)
{
mPathPrefix = null;
}
}
mModifiedUtf7Charset = new CharsetProvider().charsetForName("X-RFC-3501");
}
@Override
public Folder getFolder(String name) throws MessagingException
{
ImapFolder folder;
synchronized (mFolderCache)
{
folder = mFolderCache.get(name);
if (folder == null)
{
folder = new ImapFolder(this, name);
mFolderCache.put(name, folder);
}
}
return folder;
}
private String getCombinedPrefix()
{
if (mCombinedPrefix == null)
{
if (mPathPrefix != null)
{
String tmpPrefix = mPathPrefix.trim();
String tmpDelim = (mPathDelimeter != null ? mPathDelimeter.trim() : "");
if (tmpPrefix.endsWith(tmpDelim))
{
mCombinedPrefix = tmpPrefix;
}
else if (tmpPrefix.length() > 0)
{
mCombinedPrefix = tmpPrefix + tmpDelim;
}
else
{
mCombinedPrefix = "";
}
}
else
{
mCombinedPrefix = "";
}
}
return mCombinedPrefix;
}
@Override
public Folder[] getPersonalNamespaces() throws MessagingException
{
ImapConnection connection = getConnection();
try
{
ArrayList<Folder> folders = new ArrayList<Folder>();
List<ImapResponse> responses =
connection.executeSimpleCommand(String.format("LIST \"\" \"%s*\"",
getCombinedPrefix()));
for (ImapResponse response : responses)
{
if (response.get(0).equals("LIST"))
{
boolean includeFolder = true;
String folder = decodeFolderName(response.getString(3));
if (mPathDelimeter == null)
{
mPathDelimeter = response.getString(2);
mCombinedPrefix = null;
}
if (folder.equalsIgnoreCase(K9.INBOX))
{
continue;
}
else
{
if (getCombinedPrefix().length() > 0)
{
if (folder.length() >= getCombinedPrefix().length())
{
folder = folder.substring(getCombinedPrefix().length());
}
if (!decodeFolderName(response.getString(3)).equals(getCombinedPrefix() + folder))
{
includeFolder = false;
}
}
}
ImapList attributes = response.getList(1);
for (int i = 0, count = attributes.size(); i < count; i++)
{
String attribute = attributes.getString(i);
if (attribute.equalsIgnoreCase("\\NoSelect"))
{
includeFolder = false;
}
}
if (includeFolder)
{
folders.add(getFolder(folder));
}
}
}
folders.add(getFolder("INBOX"));
return folders.toArray(new Folder[] {});
}
catch (IOException ioe)
{
connection.close();
throw new MessagingException("Unable to get folder list.", ioe);
}
finally
{
releaseConnection(connection);
}
}
@Override
public void checkSettings() throws MessagingException
{
try
{
ImapConnection connection = new ImapConnection();
connection.open();
connection.close();
}
catch (IOException ioe)
{
throw new MessagingException("Unable to connect.", ioe);
}
}
/**
* Gets a connection if one is available for reuse, or creates a new one if not.
* @return
*/
private ImapConnection getConnection() throws MessagingException
{
synchronized (mConnections)
{
ImapConnection connection = null;
while ((connection = mConnections.poll()) != null)
{
try
{
connection.executeSimpleCommand("NOOP");
break;
}
catch (IOException ioe)
{
connection.close();
}
}
if (connection == null)
{
connection = new ImapConnection();
}
return connection;
}
}
private void releaseConnection(ImapConnection connection)
{
if (connection != null && connection.isOpen())
{
synchronized (mConnections)
{
mConnections.offer(connection);
}
}
}
private String encodeFolderName(String name)
{
try
{
ByteBuffer bb = mModifiedUtf7Charset.encode(name);
byte[] b = new byte[bb.limit()];
bb.get(b);
return new String(b, "US-ASCII");
}
catch (UnsupportedEncodingException uee)
{
/*
* The only thing that can throw this is getBytes("US-ASCII") and if US-ASCII doesn't
* exist we're totally screwed.
*/
throw new RuntimeException("Unable to encode folder name: " + name, uee);
}
}
private String decodeFolderName(String name)
{
/*
* Convert the encoded name to US-ASCII, then pass it through the modified UTF-7
* decoder and return the Unicode String.
*/
try
{
byte[] encoded = name.getBytes("US-ASCII");
CharBuffer cb = mModifiedUtf7Charset.decode(ByteBuffer.wrap(encoded));
return cb.toString();
}
catch (UnsupportedEncodingException uee)
{
/*
* The only thing that can throw this is getBytes("US-ASCII") and if US-ASCII doesn't
* exist we're totally screwed.
*/
throw new RuntimeException("Unable to decode folder name: " + name, uee);
}
}
@Override
public boolean isMoveCapable()
{
return true;
}
@Override
public boolean isCopyCapable()
{
return true;
}
@Override
public boolean isPushCapable()
{
return true;
}
@Override
public boolean isExpungeCapable()
{
return true;
}
class ImapFolder extends Folder
{
private String mName;
protected int mMessageCount = -1;
protected int uidNext = -1;
protected ImapConnection mConnection;
private OpenMode mMode;
private boolean mExists;
private ImapStore store = null;
public ImapFolder(ImapStore nStore, String name)
{
super(nStore.getAccount());
store = nStore;
this.mName = name;
}
public String getPrefixedName() throws MessagingException
{
String prefixedName = "";
if (!K9.INBOX.equalsIgnoreCase(mName))
{
ImapConnection connection = null;
synchronized (this)
{
if (mConnection == null)
{
connection = getConnection();
}
else
{
connection = mConnection;
}
}
try
{
connection.open();
}
catch (IOException ioe)
{
throw new MessagingException("Unable to get IMAP prefix", ioe);
}
finally
{
if (mConnection == null)
{
releaseConnection(connection);
}
}
prefixedName = getCombinedPrefix();
}
prefixedName += mName;
return prefixedName;
}
protected List<ImapResponse> executeSimpleCommand(String command) throws MessagingException, IOException
{
return handleUntaggedResponses(mConnection.executeSimpleCommand(command));
}
protected List<ImapResponse> executeSimpleCommand(String command, boolean sensitve, UntaggedHandler untaggedHandler) throws MessagingException, IOException
{
return handleUntaggedResponses(mConnection.executeSimpleCommand(command, sensitve, untaggedHandler));
}
public void open(OpenMode mode) throws MessagingException
{
internalOpen(mode);
if (mMessageCount == -1)
{
throw new MessagingException(
"Did not find message count during open");
}
}
public List<ImapResponse> internalOpen(OpenMode mode) throws MessagingException
{
if (isOpen() && mMode == mode)
{
// Make sure the connection is valid. If it's not we'll close it down and continue
// on to get a new one.
try
{
List<ImapResponse> responses = executeSimpleCommand("NOOP");
return responses;
}
catch (IOException ioe)
{
ioExceptionHandler(mConnection, ioe);
}
}
releaseConnection(mConnection);
synchronized (this)
{
mConnection = getConnection();
}
// * FLAGS (\Answered \Flagged \Deleted \Seen \Draft NonJunk
// $MDNSent)
// * OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft
// NonJunk $MDNSent \*)] Flags permitted.
// * 23 EXISTS
// * 0 RECENT
// * OK [UIDVALIDITY 1125022061] UIDs valid
// * OK [UIDNEXT 57576] Predicted next UID
// 2 OK [READ-WRITE] Select completed.
try
{
String command = String.format((mode == OpenMode.READ_WRITE ? "SELECT" : "EXAMINE") + " \"%s\"",
encodeFolderName(getPrefixedName()));
List<ImapResponse> responses = executeSimpleCommand(command);
/*
* If the command succeeds we expect the folder has been opened read-write
* unless we are notified otherwise in the responses.
*/
mMode = mode;
for (ImapResponse response : responses)
{
if (response.mTag != null && response.size() >= 2)
{
Object bracketedObj = response.get(1);
if (bracketedObj instanceof ImapList)
{
ImapList bracketed = (ImapList)bracketedObj;
if (bracketed.size() > 0)
{
Object keyObj = bracketed.get(0);
if (keyObj instanceof String)
{
String key = (String)keyObj;
if ("READ-ONLY".equalsIgnoreCase(key))
{
mMode = OpenMode.READ_ONLY;
}
else if ("READ-WRITE".equalsIgnoreCase(key))
{
mMode = OpenMode.READ_WRITE;
}
}
}
}
}
}
mExists = true;
return responses;
}
catch (IOException ioe)
{
throw ioExceptionHandler(mConnection, ioe);
}
catch (MessagingException me)
{
Log.e(K9.LOG_TAG, "Unable to open connection for " + getLogId(), me);
throw me;
}
}
public boolean isOpen()
{
return mConnection != null;
}
@Override
public OpenMode getMode() throws MessagingException
{
return mMode;
}
public void close()
{
if (mMessageCount != -1)
{
mMessageCount = -1;
}
if (!isOpen())
{
return;
}
synchronized (this)
{
releaseConnection(mConnection);
mConnection = null;
}
}
public String getName()
{
return mName;
}
private boolean exists(String folderName) throws MessagingException
{
try
{
// Since we don't care about RECENT, we'll use that for the check, because we're checking
// a folder other than ourself, and don't want any untagged responses to cause a change
// in our own fields
mConnection.executeSimpleCommand(String.format("STATUS \"%s\" (RECENT)", folderName));
return true;
}
catch (IOException ioe)
{
throw ioExceptionHandler(mConnection, ioe);
}
catch (MessagingException me)
{
return false;
}
}
public boolean exists() throws MessagingException
{
if (mExists)
{
return true;
}
/*
* This method needs to operate in the unselected mode as well as the selected mode
* so we must get the connection ourselves if it's not there. We are specifically
* not calling checkOpen() since we don't care if the folder is open.
*/
ImapConnection connection = null;
synchronized (this)
{
if (mConnection == null)
{
connection = getConnection();
}
else
{
connection = mConnection;
}
}
try
{
connection.executeSimpleCommand(String.format("STATUS \"%s\" (UIDVALIDITY)",
encodeFolderName(getPrefixedName())));
mExists = true;
return true;
}
catch (MessagingException me)
{
return false;
}
catch (IOException ioe)
{
throw ioExceptionHandler(connection, ioe);
}
finally
{
if (mConnection == null)
{
releaseConnection(connection);
}
}
}
public boolean create(FolderType type) throws MessagingException
{
/*
* This method needs to operate in the unselected mode as well as the selected mode
* so we must get the connection ourselves if it's not there. We are specifically
* not calling checkOpen() since we don't care if the folder is open.
*/
ImapConnection connection = null;
synchronized (this)
{
if (mConnection == null)
{
connection = getConnection();
}
else
{
connection = mConnection;
}
}
try
{
connection.executeSimpleCommand(String.format("CREATE \"%s\"",
encodeFolderName(getPrefixedName())));
return true;
}
catch (MessagingException me)
{
return false;
}
catch (IOException ioe)
{
throw ioExceptionHandler(mConnection, ioe);
}
finally
{
if (mConnection == null)
{
releaseConnection(connection);
}
}
}
@Override
public void copyMessages(Message[] messages, Folder folder) throws MessagingException
{
if (folder instanceof ImapFolder == false)
{
throw new MessagingException("ImapFolder.copyMessages passed non-ImapFolder");
}
if (messages.length == 0)
return;
ImapFolder iFolder = (ImapFolder)folder;
checkOpen();
String[] uids = new String[messages.length];
for (int i = 0, count = messages.length; i < count; i++)
{
uids[i] = messages[i].getUid();
}
try
{
String remoteDestName = encodeFolderName(iFolder.getPrefixedName());
if (!exists(remoteDestName))
{
/*
* If the remote trash folder doesn't exist we try to create it.
*/
if (K9.DEBUG)
Log.i(K9.LOG_TAG, "IMAPMessage.copyMessages: attempting to create remote '" + remoteDestName + "' folder for " + getLogId());
iFolder.create(FolderType.HOLDS_MESSAGES);
}
if (exists(remoteDestName))
{
executeSimpleCommand(String.format("UID COPY %s \"%s\"",
Utility.combine(uids, ','),
encodeFolderName(iFolder.getPrefixedName())));
}
else
{
throw new MessagingException("IMAPMessage.copyMessages: remote destination folder " + folder.getName()
+ " does not exist and could not be created for " + getLogId()
, true);
}
}
catch (IOException ioe)
{
throw ioExceptionHandler(mConnection, ioe);
}
}
@Override
public void moveMessages(Message[] messages, Folder folder) throws MessagingException
{
if (messages.length == 0)
return;
copyMessages(messages, folder);
setFlags(messages, new Flag[] { Flag.DELETED }, true);
}
public void delete(Message[] messages, String trashFolderName) throws MessagingException
{
if (messages.length == 0)
return;
if (trashFolderName == null || getName().equals(trashFolderName))
{
setFlags(messages, new Flag[] { Flag.DELETED }, true);
}
else
{
ImapFolder remoteTrashFolder = (ImapFolder)getStore().getFolder(trashFolderName);
String remoteTrashName = encodeFolderName(remoteTrashFolder.getPrefixedName());
if (!exists(remoteTrashName))
{
/*
* If the remote trash folder doesn't exist we try to create it.
*/
if (K9.DEBUG)
Log.i(K9.LOG_TAG, "IMAPMessage.delete: attempting to create remote '" + trashFolderName + "' folder for " + getLogId());
remoteTrashFolder.create(FolderType.HOLDS_MESSAGES);
}
if (exists(remoteTrashName))
{
if (K9.DEBUG)
Log.d(K9.LOG_TAG, "IMAPMessage.delete: copying remote " + messages.length + " messages to '" + trashFolderName + "' for " + getLogId());
moveMessages(messages, remoteTrashFolder);
}
else
{
throw new MessagingException("IMAPMessage.delete: remote Trash folder " + trashFolderName + " does not exist and could not be created for " + getLogId()
, true);
}
}
}
@Override
public int getMessageCount()
{
return mMessageCount;
}
@Override
public int getUnreadMessageCount() throws MessagingException
{
checkOpen();
try
{
int count = 0;
int start = mMessageCount - 299;
if (start < 1)
{
start = 1;
}
List<ImapResponse> responses = executeSimpleCommand(String.format("SEARCH %d:* UNSEEN NOT DELETED", start));
for (ImapResponse response : responses)
{
if (response.get(0).equals("SEARCH"))
{
count += response.size() - 1;
}
}
return count;
}
catch (IOException ioe)
{
throw ioExceptionHandler(mConnection, ioe);
}
}
@Override
public void delete(boolean recurse) throws MessagingException
{
throw new Error("ImapStore.delete() not yet implemented");
}
@Override
public Message getMessage(String uid) throws MessagingException
{
return new ImapMessage(uid, this);
}
@Override
public Message[] getMessages(int start, int end, MessageRetrievalListener listener)
throws MessagingException
{
return getMessages(start, end, false, listener);
}
protected Message[] getMessages(final int start, final int end, final boolean includeDeleted, final MessageRetrievalListener listener)
throws MessagingException
{
if (start < 1 || end < 1 || end < start)
{
throw new MessagingException(
String.format("Invalid message set %d %d",
start, end));
}
ImapSearcher searcher = new ImapSearcher()
{
public List<ImapResponse> search() throws IOException, MessagingException
{
return executeSimpleCommand(String.format("UID SEARCH %d:%d" + (includeDeleted ? "" : " NOT DELETED"), start, end));
}
};
return search(searcher, listener);
}
protected Message[] getMessages(final List<Integer> mesgSeqs, final boolean includeDeleted, final MessageRetrievalListener listener)
throws MessagingException
{
ImapSearcher searcher = new ImapSearcher()
{
public List<ImapResponse> search() throws IOException, MessagingException
{
return executeSimpleCommand(String.format("UID SEARCH %s" + (includeDeleted ? "" : " NOT DELETED"), Utility.combine(mesgSeqs.toArray(), ',')));
}
};
return search(searcher, listener);
}
private Message[] search(ImapSearcher searcher, MessageRetrievalListener listener) throws MessagingException
{
checkOpen();
ArrayList<Message> messages = new ArrayList<Message>();
try
{
ArrayList<Integer> uids = new ArrayList<Integer>();
List<ImapResponse> responses = searcher.search(); //
for (ImapResponse response : responses)
{
if (response.mTag == null)
{
if (response.get(0).equals("SEARCH"))
{
for (int i = 1, count = response.size(); i < count; i++)
{
uids.add(Integer.parseInt(response.getString(i)));
}
}
}
}
// Sort the uids in numerically ascending order
Collections.sort(uids);
for (int i = 0, count = uids.size(); i < count; i++)
{
if (listener != null)
{
listener.messageStarted("" + uids.get(i), i, count);
}
ImapMessage message = new ImapMessage("" + uids.get(i), this);
messages.add(message);
if (listener != null)
{
listener.messageFinished(message, i, count);
}
}
}
catch (IOException ioe)
{
throw ioExceptionHandler(mConnection, ioe);
}
return messages.toArray(new Message[] {});
}
public Message[] getMessages(MessageRetrievalListener listener) throws MessagingException
{
return getMessages(null, listener);
}
public Message[] getMessages(String[] uids, MessageRetrievalListener listener)
throws MessagingException
{
checkOpen();
ArrayList<Message> messages = new ArrayList<Message>();
try
{
if (uids == null)
{
List<ImapResponse> responses = executeSimpleCommand("UID SEARCH 1:* NOT DELETED");
ArrayList<String> tempUids = new ArrayList<String>();
for (ImapResponse response : responses)
{
if (response.get(0).equals("SEARCH"))
{
for (int i = 1, count = response.size(); i < count; i++)
{
tempUids.add(response.getString(i));
}
}
}
uids = tempUids.toArray(new String[] {});
}
for (int i = 0, count = uids.length; i < count; i++)
{
if (listener != null)
{
listener.messageStarted(uids[i], i, count);
}
ImapMessage message = new ImapMessage(uids[i], this);
messages.add(message);
if (listener != null)
{
listener.messageFinished(message, i, count);
}
}
}
catch (IOException ioe)
{
throw ioExceptionHandler(mConnection, ioe);
}
return messages.toArray(new Message[] {});
}
public void fetch(Message[] messages, FetchProfile fp, MessageRetrievalListener listener)
throws MessagingException
{
if (messages == null || messages.length == 0)
{
return;
}
checkOpen();
String[] uids = new String[messages.length];
HashMap<String, Message> messageMap = new HashMap<String, Message>();
for (int i = 0, count = messages.length; i < count; i++)
{
uids[i] = messages[i].getUid();
messageMap.put(uids[i], messages[i]);
}
/*
* Figure out what command we are going to run:
* Flags - UID FETCH (FLAGS)
* Envelope - UID FETCH ([FLAGS] INTERNALDATE UID RFC822.SIZE FLAGS BODY.PEEK[HEADER.FIELDS (date subject from content-type to cc)])
*
*/
LinkedHashSet<String> fetchFields = new LinkedHashSet<String>();
fetchFields.add("UID");
if (fp.contains(FetchProfile.Item.FLAGS))
{
fetchFields.add("FLAGS");
}
if (fp.contains(FetchProfile.Item.ENVELOPE))
{
fetchFields.add("INTERNALDATE");
fetchFields.add("RFC822.SIZE");
fetchFields.add("BODY.PEEK[HEADER.FIELDS (date subject from content-type to cc reply-to "
+ K9.K9MAIL_IDENTITY + ")]");
}
if (fp.contains(FetchProfile.Item.STRUCTURE))
{
fetchFields.add("BODYSTRUCTURE");
}
if (fp.contains(FetchProfile.Item.BODY_SANE))
{
fetchFields.add(String.format("BODY.PEEK[]<0.%d>", FETCH_BODY_SANE_SUGGESTED_SIZE));
}
if (fp.contains(FetchProfile.Item.BODY))
{
fetchFields.add("BODY.PEEK[]");
}
for (Object o : fp)
{
if (o != null && o instanceof Part)
{
Part part = (Part) o;
String partId = part.getHeader(MimeHeader.HEADER_ANDROID_ATTACHMENT_STORE_DATA)[0];
if ("TEXT".equals(partId))
{
fetchFields.add(String.format("BODY.PEEK[TEXT]<0.%d>", FETCH_BODY_SANE_SUGGESTED_SIZE));
}
else
{
fetchFields.add("BODY.PEEK[" + partId + "]");
}
}
}
try
{
mConnection.sendCommand(String.format("UID FETCH %s (%s)",
Utility.combine(uids, ','),
Utility.combine(fetchFields.toArray(new String[fetchFields.size()]), ' ')
), false);
ImapResponse response;
int messageNumber = 0;
do
{
response = mConnection.readResponse();
if (K9.DEBUG)
Log.v(K9.LOG_TAG, "response for fetch: " + response + " for " + getLogId());
if (response.mTag == null && response.get(1).equals("FETCH"))
{
ImapList fetchList = (ImapList)response.getKeyedValue("FETCH");
String uid = fetchList.getKeyedString("UID");
Message message = messageMap.get(uid);
if (message == null)
{
if (K9.DEBUG)
Log.d(K9.LOG_TAG, "Do not have message in messageMap for UID " + uid + " for " + getLogId());
handleUntaggedResponse(response);
continue;
}
if (listener != null)
{
listener.messageStarted(uid, messageNumber++, messageMap.size());
}
ImapMessage imapMessage = (ImapMessage) message;
if (fetchList.containsKey("FLAGS"))
{
ImapList flags = fetchList.getKeyedList("FLAGS");
if (flags != null)
{
for (int i = 0, count = flags.size(); i < count; i++)
{
String flag = flags.getString(i);
if (flag.equals("\\Deleted"))
{
imapMessage.setFlagInternal(Flag.DELETED, true);
}
else if (flag.equals("\\Answered"))
{
imapMessage.setFlagInternal(Flag.ANSWERED, true);
}
else if (flag.equals("\\Seen"))
{
imapMessage.setFlagInternal(Flag.SEEN, true);
}
else if (flag.equals("\\Flagged"))
{
imapMessage.setFlagInternal(Flag.FLAGGED, true);
}
}
}
}
if (fetchList.containsKey("INTERNALDATE"))
{
Date internalDate = fetchList.getKeyedDate("INTERNALDATE");
message.setInternalDate(internalDate);
}
if (fetchList.containsKey("RFC822.SIZE"))
{
int size = fetchList.getKeyedNumber("RFC822.SIZE");
imapMessage.setSize(size);
}
if (fetchList.containsKey("BODYSTRUCTURE"))
{
ImapList bs = fetchList.getKeyedList("BODYSTRUCTURE");
if (bs != null)
{
try
{
parseBodyStructure(bs, message, "TEXT");
}
catch (MessagingException e)
{
if (K9.DEBUG)
Log.d(K9.LOG_TAG, "Error handling message for " + getLogId(), e);
message.setBody(null);
}
}
}
if (fetchList.containsKey("BODY"))
{
Part part = null;
for (Object o : fp)
{
if (o instanceof Part)
{
part = (Part) o;
break;
}
}
int index = fetchList.getKeyIndex("BODY") + 2;
Object literal = fetchList.getObject(index);
// Check if there's an origin octet
if (literal instanceof String)
{
String originOctet = (String)literal;
if (originOctet.startsWith("<"))
{
literal = fetchList.getObject(index + 1);
}
}
InputStream bodyStream;
if (literal instanceof InputStream)
{
bodyStream = (InputStream)literal;
}
else if (literal instanceof String)
{
String bodyString = (String)literal;
if (K9.DEBUG)
Log.v(K9.LOG_TAG, "Part is a String: '" + bodyString + "' for " + getLogId());
bodyStream = new ByteArrayInputStream(bodyString.getBytes());
}
else
{
// This shouldn't happen
throw new MessagingException("Got FETCH response with bogus parameters");
}
if (part != null)
{
String contentTransferEncoding = part.getHeader(
MimeHeader.HEADER_CONTENT_TRANSFER_ENCODING)[0];
part.setBody(MimeUtility.decodeBody(bodyStream, contentTransferEncoding));
}
else
{
imapMessage.parse(bodyStream);
}
}
if (listener != null)
{
listener.messageFinished(message, messageNumber, messageMap.size());
}
}
else
{
handleUntaggedResponse(response);
}
while (response.more());
}
while (response.mTag == null);
}
catch (IOException ioe)
{
throw ioExceptionHandler(mConnection, ioe);
}
}
@Override
public Flag[] getPermanentFlags() throws MessagingException
{
return PERMANENT_FLAGS;
}
/**
* Handle any untagged responses that the caller doesn't care to handle themselves.
* @param responses
*/
protected List<ImapResponse> handleUntaggedResponses(List<ImapResponse> responses)
{
for (ImapResponse response : responses)
{
handleUntaggedResponse(response);
}
return responses;
}
protected void handlePossibleUidNext(ImapResponse response)
{
if (response.get(0).equals("OK") && response.size() > 1)
{
Object bracketedObj = response.get(1);
if (bracketedObj instanceof ImapList)
{
ImapList bracketed = (ImapList)bracketedObj;
if (bracketed.size() > 1)
{
Object keyObj = bracketed.get(0);
if (keyObj instanceof String)
{
String key = (String)keyObj;
if ("UIDNEXT".equals(key))
{
uidNext = bracketed.getNumber(1);
if (K9.DEBUG)
Log.d(K9.LOG_TAG, "Got UidNext = " + uidNext + " for " + getLogId());
}
}
}
}
}
}
/**
* Handle an untagged response that the caller doesn't care to handle themselves.
* @param response
*/
protected void handleUntaggedResponse(ImapResponse response)
{
if (response.mTag == null && response.size() > 1)
{
if (response.get(1).equals("EXISTS"))
{
mMessageCount = response.getNumber(0);
if (K9.DEBUG)
Log.d(K9.LOG_TAG, "Got untagged EXISTS with value " + mMessageCount + " for " + getLogId());
}
handlePossibleUidNext(response);
if (response.get(1).equals("EXPUNGE") && mMessageCount > 0)
{
mMessageCount--;
if (K9.DEBUG)
Log.d(K9.LOG_TAG, "Got untagged EXPUNGE with value " + mMessageCount + " for " + getLogId());
}
// if (response.size() > 1) {
// Object bracketedObj = response.get(1);
// if (bracketedObj instanceof ImapList)
// {
// ImapList bracketed = (ImapList)bracketedObj;
//
// if (bracketed.size() > 0)
// {
// Object keyObj = bracketed.get(0);
// if (keyObj instanceof String)
// {
// String key = (String)keyObj;
// if ("ALERT".equals(key))
// {
// StringBuffer sb = new StringBuffer();
// for (int i = 2, count = response.size(); i < count; i++) {
// sb.append(response.get(i).toString());
// sb.append(' ');
// }
//
// Log.w(K9.LOG_TAG, "ALERT: " + sb.toString() + " for " + getLogId());
// }
// }
// }
//
//
// }
// }
}
//Log.i(K9.LOG_TAG, "mMessageCount = " + mMessageCount + " for " + getLogId());
}
private void parseBodyStructure(ImapList bs, Part part, String id)
throws MessagingException
{
if (bs.get(0) instanceof ImapList)
{
/*
* This is a multipart/*
*/
MimeMultipart mp = new MimeMultipart();
for (int i = 0, count = bs.size(); i < count; i++)
{
if (bs.get(i) instanceof ImapList)
{
/*
* For each part in the message we're going to add a new BodyPart and parse
* into it.
*/
ImapBodyPart bp = new ImapBodyPart();
if (id.equals("TEXT"))
{
parseBodyStructure(bs.getList(i), bp, Integer.toString(i + 1));
}
else
{
parseBodyStructure(bs.getList(i), bp, id + "." + (i + 1));
}
mp.addBodyPart(bp);
}
else
{
/*
* We've got to the end of the children of the part, so now we can find out
* what type it is and bail out.
*/
String subType = bs.getString(i);
mp.setSubType(subType.toLowerCase());
break;
}
}
part.setBody(mp);
}
else
{
/*
* This is a body. We need to add as much information as we can find out about
* it to the Part.
*/
/*
body type
body subtype
body parameter parenthesized list
body id
body description
body encoding
body size
*/
String type = bs.getString(0);
String subType = bs.getString(1);
String mimeType = (type + "/" + subType).toLowerCase();
ImapList bodyParams = null;
if (bs.get(2) instanceof ImapList)
{
bodyParams = bs.getList(2);
}
String encoding = bs.getString(5);
int size = bs.getNumber(6);
if (MimeUtility.mimeTypeMatches(mimeType, "message/rfc822"))
{
// A body type of type MESSAGE and subtype RFC822
// contains, immediately after the basic fields, the
// envelope structure, body structure, and size in
// text lines of the encapsulated message.
// [MESSAGE, RFC822, [NAME, Fwd: [#HTR-517941]: update plans at 1am Friday - Memory allocation - displayware.eml], NIL, NIL, 7BIT, 5974, NIL, [INLINE, [FILENAME*0, Fwd: [#HTR-517941]: update plans at 1am Friday - Memory all, FILENAME*1, ocation - displayware.eml]], NIL]
/*
* This will be caught by fetch and handled appropriately.
*/
throw new MessagingException("BODYSTRUCTURE message/rfc822 not yet supported.");
}
/*
* Set the content type with as much information as we know right now.
*/
String contentType = String.format("%s", mimeType);
if (bodyParams != null)
{
/*
* If there are body params we might be able to get some more information out
* of them.
*/
for (int i = 0, count = bodyParams.size(); i < count; i += 2)
{
contentType += String.format(";\n %s=\"%s\"",
bodyParams.getString(i),
bodyParams.getString(i + 1));
}
}
part.setHeader(MimeHeader.HEADER_CONTENT_TYPE, contentType);
// Extension items
ImapList bodyDisposition = null;
if (("text".equalsIgnoreCase(type))
&& (bs.size() > 8)
&& (bs.get(9) instanceof ImapList))
{
bodyDisposition = bs.getList(9);
}
else if (!("text".equalsIgnoreCase(type))
&& (bs.size() > 7)
&& (bs.get(8) instanceof ImapList))
{
bodyDisposition = bs.getList(8);
}
String contentDisposition = "";
if (bodyDisposition != null && bodyDisposition.size() > 0)
{
if (!"NIL".equalsIgnoreCase(bodyDisposition.getString(0)))
{
contentDisposition = bodyDisposition.getString(0).toLowerCase();
}
if ((bodyDisposition.size() > 1)
&& (bodyDisposition.get(1) instanceof ImapList))
{
ImapList bodyDispositionParams = bodyDisposition.getList(1);
/*
* If there is body disposition information we can pull some more information
* about the attachment out.
*/
for (int i = 0, count = bodyDispositionParams.size(); i < count; i += 2)
{
contentDisposition += String.format(";\n %s=\"%s\"",
bodyDispositionParams.getString(i).toLowerCase(),
bodyDispositionParams.getString(i + 1));
}
}
}
if (MimeUtility.getHeaderParameter(contentDisposition, "size") == null)
{
contentDisposition += String.format(";\n size=%d", size);
}
/*
* Set the content disposition containing at least the size. Attachment
* handling code will use this down the road.
*/
part.setHeader(MimeHeader.HEADER_CONTENT_DISPOSITION, contentDisposition);
/*
* Set the Content-Transfer-Encoding header. Attachment code will use this
* to parse the body.
*/
part.setHeader(MimeHeader.HEADER_CONTENT_TRANSFER_ENCODING, encoding);
if (part instanceof ImapMessage)
{
((ImapMessage) part).setSize(size);
}
else if (part instanceof ImapBodyPart)
{
((ImapBodyPart) part).setSize(size);
}
else
{
throw new MessagingException("Unknown part type " + part.toString());
}
part.setHeader(MimeHeader.HEADER_ANDROID_ATTACHMENT_STORE_DATA, id);
}
}
/**
* Appends the given messages to the selected folder. This implementation also determines
* the new UID of the given message on the IMAP server and sets the Message's UID to the
* new server UID.
*/
public void appendMessages(Message[] messages) throws MessagingException
{
checkOpen();
try
{
for (Message message : messages)
{
CountingOutputStream out = new CountingOutputStream();
EOLConvertingOutputStream eolOut = new EOLConvertingOutputStream(out);
message.writeTo(eolOut);
eolOut.flush();
mConnection.sendCommand(
String.format("APPEND \"%s\" (%s) {%d}",
encodeFolderName(getPrefixedName()),
combineFlags(message.getFlags()),
out.getCount()), false);
ImapResponse response;
do
{
response = mConnection.readResponse();
handleUntaggedResponse(response);
if (response.mCommandContinuationRequested)
{
eolOut = new EOLConvertingOutputStream(mConnection.mOut);
message.writeTo(eolOut);
eolOut.write('\r');
eolOut.write('\n');
eolOut.flush();
}
while (response.more());
}
while (response.mTag == null);
String newUid = getUidFromMessageId(message);
if (K9.DEBUG)
Log.d(K9.LOG_TAG, "Got UID " + newUid + " for message for " + getLogId());
if (newUid != null)
{
message.setUid(newUid);
}
}
}
catch (IOException ioe)
{
throw ioExceptionHandler(mConnection, ioe);
}
}
public String getUidFromMessageId(Message message) throws MessagingException
{
try
{
/*
* Try to find the UID of the message we just appended using the
* Message-ID header.
*/
String[] messageIdHeader = message.getHeader("Message-ID");
if (messageIdHeader == null || messageIdHeader.length == 0)
{
if (K9.DEBUG)
Log.d(K9.LOG_TAG, "Did not get a message-id in order to search for UID for " + getLogId());
return null;
}
String messageId = messageIdHeader[0];
if (K9.DEBUG)
Log.d(K9.LOG_TAG, "Looking for UID for message with message-id " + messageId + " for " + getLogId());
List<ImapResponse> responses =
executeSimpleCommand(
String.format("UID SEARCH HEADER MESSAGE-ID %s", messageId));
for (ImapResponse response1 : responses)
{
if (response1.mTag == null && response1.get(0).equals("SEARCH")
&& response1.size() > 1)
{
return response1.getString(1);
}
}
return null;
}
catch (IOException ioe)
{
throw new MessagingException("Could not find UID for message based on Message-ID", ioe);
}
}
public void expunge() throws MessagingException
{
checkOpen();
try
{
executeSimpleCommand("EXPUNGE");
}
catch (IOException ioe)
{
throw ioExceptionHandler(mConnection, ioe);
}
}
private String combineFlags(Flag[] flags)
{
ArrayList<String> flagNames = new ArrayList<String>();
for (int i = 0, count = flags.length; i < count; i++)
{
Flag flag = flags[i];
if (flag == Flag.SEEN)
{
flagNames.add("\\Seen");
}
else if (flag == Flag.DELETED)
{
flagNames.add("\\Deleted");
}
else if (flag == Flag.ANSWERED)
{
flagNames.add("\\Answered");
}
else if (flag == Flag.FLAGGED)
{
flagNames.add("\\Flagged");
}
}
return Utility.combine(flagNames.toArray(new String[flagNames.size()]), ' ');
}
@Override
public void setFlags(Flag[] flags, boolean value)
throws MessagingException
{
checkOpen();
try
{
executeSimpleCommand(String.format("UID STORE 1:* %sFLAGS.SILENT (%s)",
value ? "+" : "-", combineFlags(flags)));
}
catch (IOException ioe)
{
throw ioExceptionHandler(mConnection, ioe);
}
}
public String getNewPushState(String oldPushStateS, Message message)
{
try
{
String messageUidS = message.getUid();
int messageUid = Integer.parseInt(messageUidS);
ImapPushState oldPushState = ImapPushState.parse(oldPushStateS);
if (messageUid >= oldPushState.uidNext)
{
int uidNext = messageUid + 1;
ImapPushState newPushState = new ImapPushState(uidNext);
return newPushState.toString();
}
else
{
return null;
}
}
catch (Exception e)
{
Log.e(K9.LOG_TAG, "Exception while updated push state for " + getLogId(), e);
return null;
}
}
public void setFlags(Message[] messages, Flag[] flags, boolean value)
throws MessagingException
{
checkOpen();
String[] uids = new String[messages.length];
for (int i = 0, count = messages.length; i < count; i++)
{
uids[i] = messages[i].getUid();
}
ArrayList<String> flagNames = new ArrayList<String>();
for (int i = 0, count = flags.length; i < count; i++)
{
Flag flag = flags[i];
if (flag == Flag.SEEN)
{
flagNames.add("\\Seen");
}
else if (flag == Flag.DELETED)
{
flagNames.add("\\Deleted");
}
else if (flag == Flag.ANSWERED)
{
flagNames.add("\\Answered");
}
else if (flag == Flag.FLAGGED)
{
flagNames.add("\\Flagged");
}
}
try
{
executeSimpleCommand(String.format("UID STORE %s %sFLAGS.SILENT (%s)",
Utility.combine(uids, ','),
value ? "+" : "-",
Utility.combine(flagNames.toArray(new String[flagNames.size()]), ' ')));
}
catch (IOException ioe)
{
throw ioExceptionHandler(mConnection, ioe);
}
}
private void checkOpen() throws MessagingException
{
if (!isOpen())
{
throw new MessagingException("Folder " + getPrefixedName() + " is not open.");
}
}
private MessagingException ioExceptionHandler(ImapConnection connection, IOException ioe)
throws MessagingException
{
Log.e(K9.LOG_TAG, "IOException for " + getLogId(), ioe);
connection.close();
close();
return new MessagingException("IO Error", ioe);
}
@Override
public boolean equals(Object o)
{
if (o instanceof ImapFolder)
{
return ((ImapFolder)o).getName().equalsIgnoreCase(getName());
}
return super.equals(o);
}
protected ImapStore getStore()
{
return store;
}
protected String getLogId()
{
String id = getName() + "/" + Thread.currentThread().getName();
if (mConnection != null)
{
id += "/" + mConnection.getLogId();
}
return id;
}
}
/**
* A cacheable class that stores the details for a single IMAP connection.
*/
class ImapConnection
{
private Socket mSocket;
private PeekableInputStream mIn;
private OutputStream mOut;
private ImapResponseParser mParser;
private int mNextCommandTag;
protected Set<String> capabilities = new HashSet<String>();
private String getLogId()
{
return "conn" + hashCode();
}
private List<ImapResponse> receiveCapabilities(List<ImapResponse> responses)
{
for (ImapResponse response : responses)
{
ImapList capabilityList = null;
if (response.size() > 0 && response.get(0).equals("OK"))
{
for (Object thisPart : response)
{
if (thisPart instanceof ImapList)
{
ImapList thisList = (ImapList)thisPart;
if (thisList.get(0).equals(CAPABILITY_CAPABILITY))
{
capabilityList = thisList;
break;
}
}
}
}
else if (response.mTag == null)
{
capabilityList = response;
}
if (capabilityList != null)
{
if (capabilityList.size() > 0 && capabilityList.get(0).equals(CAPABILITY_CAPABILITY))
{
if (K9.DEBUG)
{
Log.d(K9.LOG_TAG, "Saving " + capabilityList.size() + " capabilities for " + getLogId());
}
for (Object capability : capabilityList)
{
if (capability instanceof String)
{
// if (K9.DEBUG)
// {
// Log.v(K9.LOG_TAG, "Saving capability '" + capability + "' for " + getLogId());
// }
capabilities.add((String)capability);
}
}
}
}
}
return responses;
}
public void open() throws IOException, MessagingException
{
if (isOpen())
{
return;
}
boolean authSuccess = false;
mNextCommandTag = 1;
try
{
Security.setProperty("networkaddress.cache.ttl", "0");
}
catch (Exception e)
{
Log.w(K9.LOG_TAG, "Could not set DNS ttl to 0 for " + getLogId(), e);
}
try
{
SocketAddress socketAddress = new InetSocketAddress(mHost, mPort);
if (K9.DEBUG)
Log.i(K9.LOG_TAG, "Connection " + getLogId() + " connecting to " + mHost + " @ IP addr " + socketAddress);
if (mConnectionSecurity == CONNECTION_SECURITY_SSL_REQUIRED ||
mConnectionSecurity == CONNECTION_SECURITY_SSL_OPTIONAL)
{
SSLContext sslContext = SSLContext.getInstance("TLS");
final boolean secure = mConnectionSecurity == CONNECTION_SECURITY_SSL_REQUIRED;
sslContext.init(null, new TrustManager[]
{
TrustManagerFactory.get(mHost, secure)
}, new SecureRandom());
mSocket = sslContext.getSocketFactory().createSocket();
mSocket.connect(socketAddress, SOCKET_CONNECT_TIMEOUT);
}
else
{
mSocket = new Socket();
mSocket.connect(socketAddress, SOCKET_CONNECT_TIMEOUT);
}
setReadTimeout(Store.SOCKET_READ_TIMEOUT);
mIn = new PeekableInputStream(new BufferedInputStream(mSocket.getInputStream(),
1024));
mParser = new ImapResponseParser(mIn);
mOut = mSocket.getOutputStream();
capabilities.clear();
ImapResponse nullResponse = mParser.readResponse();
if (K9.DEBUG)
Log.v(K9.LOG_TAG, getLogId() + "<<<" + nullResponse);
List<ImapResponse> nullResponses = new LinkedList<ImapResponse>();
nullResponses.add(nullResponse);
receiveCapabilities(nullResponses);
if (hasCapability(CAPABILITY_CAPABILITY) == false)
{
if (K9.DEBUG)
Log.i(K9.LOG_TAG, "Did not get capabilities in banner, requesting CAPABILITY for " + getLogId());
List<ImapResponse> responses = receiveCapabilities(executeSimpleCommand(COMMAND_CAPABILITY));
if (responses.size() != 2)
{
throw new MessagingException("Invalid CAPABILITY response received");
}
}
if (mConnectionSecurity == CONNECTION_SECURITY_TLS_OPTIONAL
|| mConnectionSecurity == CONNECTION_SECURITY_TLS_REQUIRED)
{
if (hasCapability("STARTTLS"))
{
// STARTTLS
executeSimpleCommand("STARTTLS");
SSLContext sslContext = SSLContext.getInstance("TLS");
boolean secure = mConnectionSecurity == CONNECTION_SECURITY_TLS_REQUIRED;
sslContext.init(null, new TrustManager[]
{
TrustManagerFactory.get(mHost, secure)
}, new SecureRandom());
mSocket = sslContext.getSocketFactory().createSocket(mSocket, mHost, mPort,
true);
mSocket.setSoTimeout(Store.SOCKET_READ_TIMEOUT);
mIn = new PeekableInputStream(new BufferedInputStream(mSocket
.getInputStream(), 1024));
mParser = new ImapResponseParser(mIn);
mOut = mSocket.getOutputStream();
}
else if (mConnectionSecurity == CONNECTION_SECURITY_TLS_REQUIRED)
{
throw new MessagingException("TLS not supported but required");
}
}
mOut = new BufferedOutputStream(mOut, 1024);
try
{
if (mAuthType == AuthType.CRAM_MD5)
{
authCramMD5();
// The authCramMD5 method called on the previous line does not allow for handling updated capabilities
// sent by the server. So, to make sure we update to the post-authentication capability list
// we fetch the capabilities here.
if (K9.DEBUG)
Log.i(K9.LOG_TAG, "Updating capabilities after CRAM-MD5 authentication for " + getLogId());
List<ImapResponse> responses = receiveCapabilities(executeSimpleCommand(COMMAND_CAPABILITY));
if (responses.size() != 2)
{
throw new MessagingException("Invalid CAPABILITY response received");
}
}
else if (mAuthType == AuthType.PLAIN)
{
receiveCapabilities(executeSimpleCommand("LOGIN \"" + escapeString(mUsername) + "\" \"" + escapeString(mPassword) + "\"", true));
}
authSuccess = true;
}
catch (ImapException ie)
{
throw new AuthenticationFailedException(ie.getAlertText(), ie);
}
catch (MessagingException me)
{
throw new AuthenticationFailedException(null, me);
}
if (K9.DEBUG)
{
Log.d(K9.LOG_TAG, CAPABILITY_COMPRESS_DEFLATE + " = " + hasCapability(CAPABILITY_COMPRESS_DEFLATE));
}
if (hasCapability(CAPABILITY_COMPRESS_DEFLATE))
{
ConnectivityManager connectivityManager = (ConnectivityManager)K9.app.getSystemService(Context.CONNECTIVITY_SERVICE);
boolean useCompression = true;
NetworkInfo netInfo = connectivityManager.getActiveNetworkInfo();
if (netInfo != null)
{
int type = netInfo.getType();
if (K9.DEBUG)
Log.d(K9.LOG_TAG, "On network type " + type);
useCompression = mAccount.useCompression(type);
}
if (K9.DEBUG)
Log.d(K9.LOG_TAG, "useCompression " + useCompression);
if (useCompression)
{
try
{
executeSimpleCommand(COMMAND_COMPRESS_DEFLATE);
ZInputStream zInputStream = new ZInputStream(mSocket.getInputStream(), true);
zInputStream.setFlushMode(JZlib.Z_PARTIAL_FLUSH);
mIn = new PeekableInputStream(new BufferedInputStream(zInputStream, 1024));
mParser = new ImapResponseParser(mIn);
ZOutputStream zOutputStream = new ZOutputStream(mSocket.getOutputStream(), JZlib.Z_BEST_SPEED, true);
mOut = new BufferedOutputStream(zOutputStream, 1024);
zOutputStream.setFlushMode(JZlib.Z_PARTIAL_FLUSH);
if (K9.DEBUG)
{
Log.i(K9.LOG_TAG, "Compression enabled for " + getLogId());
}
}
catch (Exception e)
{
Log.e(K9.LOG_TAG, "Unable to negotiate compression", e);
}
}
}
if (K9.DEBUG)
Log.d(K9.LOG_TAG, "NAMESPACE = " + hasCapability(CAPABILITY_NAMESPACE)
+ ", mPathPrefix = " + mPathPrefix);
if (mPathPrefix == null)
{
if (hasCapability(CAPABILITY_NAMESPACE))
{
if (K9.DEBUG)
Log.i(K9.LOG_TAG, "mPathPrefix is unset and server has NAMESPACE capability");
List<ImapResponse> namespaceResponses =
executeSimpleCommand(COMMAND_NAMESPACE);
for (ImapResponse response : namespaceResponses)
{
if (response.get(0).equals(COMMAND_NAMESPACE))
{
if (K9.DEBUG)
Log.d(K9.LOG_TAG, "Got NAMESPACE response " + response + " on " + getLogId());
Object personalNamespaces = response.get(1);
if (personalNamespaces != null && personalNamespaces instanceof ImapList)
{
if (K9.DEBUG)
Log.d(K9.LOG_TAG, "Got personal namespaces: " + personalNamespaces);
ImapList bracketed = (ImapList)personalNamespaces;
Object firstNamespace = bracketed.get(0);
if (firstNamespace != null && firstNamespace instanceof ImapList)
{
if (K9.DEBUG)
Log.d(K9.LOG_TAG, "Got first personal namespaces: " + firstNamespace);
bracketed = (ImapList)firstNamespace;
mPathPrefix = bracketed.getString(0);
mPathDelimeter = bracketed.getString(1);
mCombinedPrefix = null;
if (K9.DEBUG)
Log.d(K9.LOG_TAG, "Got path '" + mPathPrefix + "' and separator '" + mPathDelimeter + "'");
}
}
}
}
}
else
{
if (K9.DEBUG)
Log.i(K9.LOG_TAG, "mPathPrefix is unset but server does not have NAMESPACE capability");
mPathPrefix = "";
}
}
if (mPathDelimeter == null)
{
try
{
List<ImapResponse> nameResponses =
executeSimpleCommand(String.format("LIST \"\" \"\""));
for (ImapResponse response : nameResponses)
{
if (response.get(0).equals("LIST"))
{
mPathDelimeter = response.getString(2);
if (K9.DEBUG)
Log.d(K9.LOG_TAG, "Got path delimeter '" + mPathDelimeter + "' for " + getLogId());
}
}
}
catch (Exception e)
{
Log.e(K9.LOG_TAG, "Unable to get path delimeter using LIST", e);
}
}
}
catch (SSLException e)
{
throw new CertificateValidationException(e.getMessage(), e);
}
catch (GeneralSecurityException gse)
{
throw new MessagingException(
"Unable to open connection to IMAP server due to security error.", gse);
}
catch (ConnectException ce)
{
String ceMess = ce.getMessage();
String[] tokens = ceMess.split("-");
if (tokens != null && tokens.length > 1 && tokens[1] != null)
{
Log.e(K9.LOG_TAG, "Stripping host/port from ConnectionException for " + getLogId(), ce);
throw new ConnectException(tokens[1].trim());
}
else
{
throw ce;
}
}
finally
{
if (authSuccess == false)
{
Log.e(K9.LOG_TAG, "Failed to login, closing connection for " + getLogId());
close();
}
}
}
protected void authCramMD5() throws AuthenticationFailedException, MessagingException
{
try
{
String tag = sendCommand("AUTHENTICATE CRAM-MD5", false);
byte[] buf = new byte[ 1024 ];
int b64NonceLen = 0;
for (int i = 0; i < buf.length; i++)
{
buf[ i ] = (byte)mIn.read();
if (buf[i] == 0x0a)
{
b64NonceLen = i;
break;
}
}
if (b64NonceLen == 0)
{
throw new AuthenticationFailedException("Error negotiating CRAM-MD5: nonce too long.");
}
byte[] b64NonceTrim = new byte[ b64NonceLen - 2 ];
System.arraycopy(buf, 1, b64NonceTrim, 0, b64NonceLen - 2);
byte[] nonce = Base64.decodeBase64(b64NonceTrim);
if (K9.DEBUG)
{
Log.d(K9.LOG_TAG, "Got nonce: " + new String(b64NonceTrim, "US-ASCII"));
Log.d(K9.LOG_TAG, "Plaintext nonce: " + new String(nonce, "US-ASCII"));
}
byte[] ipad = new byte[64];
byte[] opad = new byte[64];
byte[] secretBytes = mPassword.getBytes("US-ASCII");
MessageDigest md = MessageDigest.getInstance("MD5");
if (secretBytes.length > 64)
{
secretBytes = md.digest(secretBytes);
}
System.arraycopy(secretBytes, 0, ipad, 0, secretBytes.length);
System.arraycopy(secretBytes, 0, opad, 0, secretBytes.length);
for (int i = 0; i < ipad.length; i++) ipad[i] ^= 0x36;
for (int i = 0; i < opad.length; i++) opad[i] ^= 0x5c;
md.update(ipad);
byte[] firstPass = md.digest(nonce);
md.update(opad);
byte[] result = md.digest(firstPass);
String plainCRAM = mUsername + " " + new String(Hex.encodeHex(result));
byte[] b64CRAM = Base64.encodeBase64(plainCRAM.getBytes("US-ASCII"));
if (K9.DEBUG)
{
Log.d(K9.LOG_TAG, "Username == " + mUsername);
Log.d(K9.LOG_TAG, "plainCRAM: " + plainCRAM);
Log.d(K9.LOG_TAG, "b64CRAM: " + new String(b64CRAM, "US-ASCII"));
}
mOut.write(b64CRAM);
mOut.write(new byte[] { 0x0d, 0x0a });
mOut.flush();
int respLen = 0;
for (int i = 0; i < buf.length; i++)
{
buf[ i ] = (byte)mIn.read();
if (buf[i] == 0x0a)
{
respLen = i;
break;
}
}
String toMatch = tag + " OK";
String respStr = new String(buf, 0, respLen);
if (!respStr.startsWith(toMatch))
{
throw new AuthenticationFailedException("CRAM-MD5 error: " + respStr);
}
}
catch (IOException ioe)
{
throw new AuthenticationFailedException("CRAM-MD5 Auth Failed.");
}
catch (NoSuchAlgorithmException nsae)
{
throw new AuthenticationFailedException("MD5 Not Available.");
}
}
protected void setReadTimeout(int millis) throws SocketException
{
mSocket.setSoTimeout(millis);
}
protected boolean isIdleCapable()
{
if (K9.DEBUG)
Log.v(K9.LOG_TAG, "Connection " + getLogId() + " has " + capabilities.size() + " capabilities");
return capabilities.contains(CAPABILITY_IDLE);
}
protected boolean hasCapability(String capability)
{
return capabilities.contains(capability);
}
private boolean isOpen()
{
return (mIn != null && mOut != null && mSocket != null && mSocket.isConnected() && !mSocket.isClosed());
}
private void close()
{
// if (isOpen()) {
// try {
// executeSimpleCommand("LOGOUT");
// } catch (Exception e) {
//
// }
// }
try
{
mIn.close();
}
catch (Exception e)
{
}
try
{
mOut.close();
}
catch (Exception e)
{
}
try
{
mSocket.close();
}
catch (Exception e)
{
}
mIn = null;
mOut = null;
mSocket = null;
}
private ImapResponse readResponse() throws IOException, MessagingException
{
try
{
ImapResponse response = mParser.readResponse();
if (K9.DEBUG)
Log.v(K9.LOG_TAG, getLogId() + "<<<" + response);
return response;
}
catch (IOException ioe)
{
close();
throw ioe;
}
}
private String escapeString(String in)
{
if (in == null)
{
return null;
}
String out = in.replaceAll("\\\\", "\\\\\\\\");
out = out.replaceAll("\"", "\\\\\"");
return out;
}
private void sendContinuation(String continuation) throws IOException
{
mOut.write(continuation.getBytes());
mOut.write('\r');
mOut.write('\n');
mOut.flush();
if (K9.DEBUG)
Log.v(K9.LOG_TAG, getLogId() + ">>> " + continuation);
}
public String sendCommand(String command, boolean sensitive)
throws MessagingException, IOException
{
try
{
open();
String tag = Integer.toString(mNextCommandTag++);
String commandToSend = tag + " " + command;
mOut.write(commandToSend.getBytes());
mOut.write('\r');
mOut.write('\n');
mOut.flush();
if (K9.DEBUG)
{
if (sensitive && !K9.DEBUG_SENSITIVE)
{
Log.v(K9.LOG_TAG, getLogId() + ">>> "
+ "[Command Hidden, Enable Sensitive Debug Logging To Show]");
}
else
{
Log.v(K9.LOG_TAG, getLogId() + ">>> " + commandToSend);
}
}
return tag;
}
catch (IOException ioe)
{
close();
throw ioe;
}
catch (ImapException ie)
{
close();
throw ie;
}
catch (MessagingException me)
{
close();
throw me;
}
}
public List<ImapResponse> executeSimpleCommand(String command) throws IOException,
ImapException, MessagingException
{
return executeSimpleCommand(command, false);
}
public List<ImapResponse> executeSimpleCommand(String command, boolean sensitive) throws IOException,
ImapException, MessagingException
{
return executeSimpleCommand(command, sensitive, null);
}
private List<ImapResponse> executeSimpleCommand(String command, boolean sensitive, UntaggedHandler untaggedHandler)
throws IOException, ImapException, MessagingException
{
String commandToLog = command;
if (sensitive && !K9.DEBUG_SENSITIVE)
{
commandToLog = "*sensitive*";
}
if (K9.DEBUG)
Log.v(K9.LOG_TAG, "Sending IMAP command " + commandToLog + " on connection " + getLogId());
String tag = sendCommand(command, sensitive);
if (K9.DEBUG)
Log.v(K9.LOG_TAG, "Sent IMAP command " + commandToLog + " with tag " + tag + " for " + getLogId());
ArrayList<ImapResponse> responses = new ArrayList<ImapResponse>();
ImapResponse response;
do
{
response = mParser.readResponse();
if (K9.DEBUG)
Log.v(K9.LOG_TAG, getLogId() + "<<<" + response);
if (response.mTag != null && response.mTag.equals(tag) == false)
{
Log.w(K9.LOG_TAG, "After sending tag " + tag + ", got tag response from previous command " + response + " for " + getLogId());
Iterator<ImapResponse> iter = responses.iterator();
while (iter.hasNext())
{
ImapResponse delResponse = iter.next();
if (delResponse.mTag != null || delResponse.size() < 2
|| ("EXISTS".equals(delResponse.get(1)) == false && "EXPUNGE".equals(delResponse.get(1)) == false))
{
iter.remove();
}
}
response.mTag = null;
continue;
}
if (untaggedHandler != null)
{
untaggedHandler.handleAsyncUntaggedResponse(response);
}
responses.add(response);
}
while (response.mTag == null);
if (response.size() < 1 || !response.get(0).equals("OK"))
{
throw new ImapException("Command: " + commandToLog + "; response: " + response.toString(), response.getAlertText());
}
return responses;
}
}
class ImapMessage extends MimeMessage
{
ImapMessage(String uid, Folder folder) throws MessagingException
{
this.mUid = uid;
this.mFolder = folder;
}
public void setSize(int size)
{
this.mSize = size;
}
public void parse(InputStream in) throws IOException, MessagingException
{
super.parse(in);
}
public void setFlagInternal(Flag flag, boolean set) throws MessagingException
{
super.setFlag(flag, set);
}
@Override
public void setFlag(Flag flag, boolean set) throws MessagingException
{
super.setFlag(flag, set);
mFolder.setFlags(new Message[] { this }, new Flag[] { flag }, set);
}
@Override
public void delete(String trashFolderName) throws MessagingException
{
getFolder().delete(new Message[] { this }, trashFolderName);
}
}
class ImapBodyPart extends MimeBodyPart
{
public ImapBodyPart() throws MessagingException
{
super();
}
public void setSize(int size)
{
this.mSize = size;
}
}
class ImapException extends MessagingException
{
String mAlertText;
public ImapException(String message, String alertText, Throwable throwable)
{
super(message, throwable);
this.mAlertText = alertText;
}
public ImapException(String message, String alertText)
{
super(message);
this.mAlertText = alertText;
}
public String getAlertText()
{
return mAlertText;
}
public void setAlertText(String alertText)
{
mAlertText = alertText;
}
}
public static int MAX_DELAY_TIME = 50000;
public static int NORMAL_DELAY_TIME = 2500;
public class ImapFolderPusher extends ImapFolder implements UntaggedHandler
{
final PushReceiver receiver;
Thread listeningThread = null;
final AtomicBoolean stop = new AtomicBoolean(false);
final AtomicBoolean idling = new AtomicBoolean(false);
final AtomicBoolean doneSent = new AtomicBoolean(false);
final AtomicInteger delayTime = new AtomicInteger(NORMAL_DELAY_TIME);
List<ImapResponse> storedUntaggedResponses = new ArrayList<ImapResponse>();
public ImapFolderPusher(ImapStore store, String name, PushReceiver nReceiver)
{
super(store, name);
receiver = nReceiver;
}
public void refresh() throws IOException, MessagingException
{
if (idling.get())
{
receiver.acquireWakeLock();
sendDone();
}
}
private void sendDone() throws IOException, MessagingException
{
if (doneSent.compareAndSet(false, true) == true)
{
mConnection.setReadTimeout(Store.SOCKET_READ_TIMEOUT);
sendContinuation("DONE");
}
}
private void sendContinuation(String continuation)
throws MessagingException, IOException
{
if (mConnection != null)
{
mConnection.sendContinuation(continuation);
}
}
public void start()
{
Runnable runner = new Runnable()
{
public void run()
{
receiver.acquireWakeLock();
if (K9.DEBUG)
Log.i(K9.LOG_TAG, "Pusher starting for " + getLogId());
while (stop.get() != true)
{
try
{
int oldUidNext = -1;
try
{
String pushStateS = receiver.getPushState(getName());
ImapPushState pushState = ImapPushState.parse(pushStateS);
oldUidNext = pushState.uidNext;
if (K9.DEBUG)
Log.i(K9.LOG_TAG, "Got oldUidNext " + oldUidNext + " for " + getLogId());
}
catch (Exception e)
{
Log.e(K9.LOG_TAG, "Unable to get oldUidNext for " + getLogId(), e);
}
List<ImapResponse> responses = internalOpen(OpenMode.READ_ONLY);
if (mConnection == null)
{
receiver.pushError("Could not establish connection for IDLE", null);
throw new MessagingException("Could not establish connection for IDLE");
}
if (mConnection.isIdleCapable() == false)
{
stop.set(true);
receiver.pushError("IMAP server is not IDLE capable: " + mConnection.toString(), null);
throw new MessagingException("IMAP server is not IDLE capable:" + mConnection.toString());
}
if (responses != null)
{
handleUntaggedResponses(responses);
}
int startUid = oldUidNext;
if (startUid < uidNext - 10)
{
startUid = uidNext - 10;
}
if (startUid < 1)
{
startUid = 1;
}
if (uidNext > startUid)
{
if (K9.DEBUG)
Log.i(K9.LOG_TAG, "Needs sync from uid " + startUid + " to " + uidNext + " for " + getLogId());
List<Message> messages = new ArrayList<Message>();
for (int uid = startUid; uid < uidNext; uid++)
{
ImapMessage message = new ImapMessage("" + uid, ImapFolderPusher.this);
messages.add(message);
}
if (messages.size() > 0)
{
pushMessages(messages, true);
}
}
else
{
if (stop.get() == false)
{
List<ImapResponse> untaggedResponses = null;
if (storedUntaggedResponses.size() > 0)
{
if (K9.DEBUG)
Log.i(K9.LOG_TAG, "Processing " + storedUntaggedResponses.size() + " from previous commands for " + getLogId());
untaggedResponses = new ArrayList<ImapResponse>(storedUntaggedResponses);
}
else
{
if (K9.DEBUG)
Log.i(K9.LOG_TAG, "About to IDLE for " + getLogId());
receiver.setPushActive(getName(), true);
idling.set(true);
doneSent.set(false);
mConnection.setReadTimeout(IDLE_READ_TIMEOUT);
untaggedResponses = executeSimpleCommand(COMMAND_IDLE, false, ImapFolderPusher.this);
idling.set(false);
}
if (stop.get() == false)
{
storedUntaggedResponses.clear();
processUntaggedResponses(untaggedResponses);
}
delayTime.set(NORMAL_DELAY_TIME);
}
}
}
catch (Exception e)
{
receiver.acquireWakeLock();
storedUntaggedResponses.clear();
idling.set(false);
receiver.setPushActive(getName(), false);
try
{
close();
}
catch (Exception me)
{
Log.e(K9.LOG_TAG, "Got exception while closing for exception for " + getLogId(), me);
}
if (stop.get() == true)
{
Log.i(K9.LOG_TAG, "Got exception while idling, but stop is set for " + getLogId());
}
else
{
receiver.pushError("Push error: " + e.getMessage(), null);
Log.e(K9.LOG_TAG, "Got exception while idling for " + getLogId(), e);
int delayTimeInt = delayTime.get();
receiver.sleep(delayTimeInt);
delayTimeInt *= 2;
if (delayTimeInt > MAX_DELAY_TIME)
{
delayTimeInt = MAX_DELAY_TIME;
}
delayTime.set(delayTimeInt);
}
}
}
receiver.setPushActive(getName(), false);
try
{
if (K9.DEBUG)
Log.i(K9.LOG_TAG, "Pusher for " + getLogId() + " is exiting");
close();
}
catch (Exception me)
{
Log.e(K9.LOG_TAG, "Got exception while closing for " + getLogId(), me);
}
finally
{
receiver.releaseWakeLock();
}
}
};
listeningThread = new Thread(runner);
listeningThread.start();
}
@Override
protected void handleUntaggedResponse(ImapResponse response)
{
if (response.mTag == null && response.size() > 1)
{
Object responseType = response.get(1);
if ("FETCH".equals(responseType)
|| "EXPUNGE".equals(responseType)
|| "EXISTS".equals(responseType))
{
if (K9.DEBUG)
Log.d(K9.LOG_TAG, "Storing response " + response + " for later processing");
storedUntaggedResponses.add(response);
}
handlePossibleUidNext(response);
}
}
protected void processUntaggedResponses(List<ImapResponse> responses)
{
boolean skipSync = false;
int oldMessageCount = mMessageCount;
if (oldMessageCount == -1)
{
skipSync = true;
}
List<Integer> flagSyncMsgSeqs = new ArrayList<Integer>();
for (ImapResponse response : responses)
{
oldMessageCount += processUntaggedResponse(oldMessageCount, response, flagSyncMsgSeqs);
}
if (skipSync == false)
{
if (oldMessageCount < 0)
{
oldMessageCount = 0;
}
if (mMessageCount > oldMessageCount)
{
syncMessages(oldMessageCount + 1, mMessageCount, true);
}
}
if (K9.DEBUG)
Log.d(K9.LOG_TAG, "UIDs for messages needing flag sync are " + flagSyncMsgSeqs + " for " + getLogId());
if (flagSyncMsgSeqs.size() > 0)
{
syncMessages(flagSyncMsgSeqs);
}
}
private void syncMessages(int start, int end, boolean newArrivals)
{
try
{
Message[] messageArray = null;
messageArray = getMessages(start, end, true, null);
List<Message> messages = new ArrayList<Message>();
for (Message message : messageArray)
{
messages.add(message);
}
pushMessages(messages, newArrivals);
}
catch (Exception e)
{
receiver.pushError("Exception while processing Push untagged responses", e);
}
}
private void syncMessages(List<Integer> flagSyncMsgSeqs)
{
try
{
Message[] messageArray = null;
messageArray = getMessages(flagSyncMsgSeqs, true, null);
List<Message> messages = new ArrayList<Message>();
for (Message message : messageArray)
{
messages.add(message);
}
pushMessages(messages, false);
}
catch (Exception e)
{
receiver.pushError("Exception while processing Push untagged responses", e);
}
}
protected int processUntaggedResponse(int oldMessageCount, ImapResponse response, List<Integer> flagSyncMsgSeqs)
{
super.handleUntaggedResponse(response);
int messageCountDelta = 0;
if (response.mTag == null && response.size() > 1)
{
try
{
Object responseType = response.get(1);
if ("FETCH".equals(responseType))
{
int msgSeq = response.getNumber(0);
if (K9.DEBUG)
Log.d(K9.LOG_TAG, "Got untagged FETCH for msgseq " + msgSeq + " for " + getLogId());
if (flagSyncMsgSeqs.contains(msgSeq) == false)
{
flagSyncMsgSeqs.add(msgSeq);
}
}
if ("EXPUNGE".equals(responseType))
{
int msgSeq = response.getNumber(0);
if (msgSeq <= oldMessageCount)
{
messageCountDelta = -1;
}
if (K9.DEBUG)
Log.d(K9.LOG_TAG, "Got untagged EXPUNGE for msgseq " + msgSeq + " for " + getLogId());
List<Integer> newSeqs = new ArrayList<Integer>();
Iterator<Integer> flagIter = flagSyncMsgSeqs.iterator();
while (flagIter.hasNext())
{
Integer flagMsg = flagIter.next();
if (flagMsg >= msgSeq)
{
flagIter.remove();
if (flagMsg > msgSeq)
{
newSeqs.add(flagMsg--);
}
}
}
flagSyncMsgSeqs.addAll(newSeqs);
}
}
catch (Exception e)
{
Log.e(K9.LOG_TAG, "Could not handle untagged FETCH for " + getLogId(), e);
}
}
return messageCountDelta;
}
private void pushMessages(List<Message> messages, boolean newArrivals)
{
RuntimeException holdException = null;
try
{
if (newArrivals)
{
receiver.messagesArrived(this, messages);
}
else
{
receiver.messagesFlagsChanged(this, messages);
}
}
catch (RuntimeException e)
{
holdException = e;
}
if (holdException != null)
{
throw holdException;
}
}
public void stop()
{
stop.set(true);
if (listeningThread != null)
{
listeningThread.interrupt();
}
if (mConnection != null)
{
if (K9.DEBUG)
Log.v(K9.LOG_TAG, "Closing mConnection to stop pushing for " + getLogId());
mConnection.close();
}
else
{
Log.w(K9.LOG_TAG, "Attempt to interrupt null mConnection to stop pushing on folderPusher for " + getLogId());
}
}
public void handleAsyncUntaggedResponse(ImapResponse response)
{
if (K9.DEBUG)
Log.v(K9.LOG_TAG, "Got async response: " + response);
if (stop.get() == true)
{
if (K9.DEBUG)
Log.d(K9.LOG_TAG, "Got async untagged response: " + response + ", but stop is set for " + getLogId());
try
{
sendDone();
}
catch (Exception e)
{
Log.e(K9.LOG_TAG, "Exception while sending DONE for " + getLogId(), e);
}
}
else
{
if (response.mTag == null)
{
if (response.size() > 1)
{
boolean started = false;
Object responseType = response.get(1);
if ("EXISTS".equals(responseType) || "EXPUNGE".equals(responseType) ||
"FETCH".equals(responseType))
{
if (started == false)
{
receiver.acquireWakeLock();
started = true;
}
if (K9.DEBUG)
Log.d(K9.LOG_TAG, "Got useful async untagged response: " + response + " for " + getLogId());
try
{
sendDone();
}
catch (Exception e)
{
Log.e(K9.LOG_TAG, "Exception while sending DONE for " + getLogId(), e);
}
}
}
else if (response.size() > 0)
{
if ("idling".equals(response.get(0)))
{
if (K9.DEBUG)
Log.d(K9.LOG_TAG, "Idling " + getLogId());
receiver.releaseWakeLock();
}
}
}
}
}
}
@Override
public Pusher getPusher(PushReceiver receiver)
{
return new ImapPusher(this, receiver);
}
public class ImapPusher implements Pusher
{
final ImapStore mStore;
final PushReceiver mReceiver;
HashMap<String, ImapFolderPusher> folderPushers = new HashMap<String, ImapFolderPusher>();
public ImapPusher(ImapStore store, PushReceiver receiver)
{
mStore = store;
mReceiver = receiver;
}
public void start(List<String> folderNames)
{
stop();
synchronized (folderPushers)
{
for (String folderName : folderNames)
{
ImapFolderPusher pusher = folderPushers.get(folderName);
if (pusher == null)
{
pusher = new ImapFolderPusher(mStore, folderName, mReceiver);
folderPushers.put(folderName, pusher);
pusher.start();
}
}
}
}
public void refresh()
{
synchronized (folderPushers)
{
for (ImapFolderPusher folderPusher : folderPushers.values())
{
try
{
folderPusher.refresh();
}
catch (Exception e)
{
Log.e(K9.LOG_TAG, "Got exception while refreshing for " + folderPusher.getName(), e);
}
}
}
}
public void stop()
{
if (K9.DEBUG)
Log.i(K9.LOG_TAG, "Requested stop of IMAP pusher");
synchronized (folderPushers)
{
for (ImapFolderPusher folderPusher : folderPushers.values())
{
try
{
if (K9.DEBUG)
Log.i(K9.LOG_TAG, "Requesting stop of IMAP folderPusher " + folderPusher.getName());
folderPusher.stop();
}
catch (Exception e)
{
Log.e(K9.LOG_TAG, "Got exception while stopping " + folderPusher.getName(), e);
}
}
folderPushers.clear();
}
}
public int getRefreshInterval()
{
return IDLE_REFRESH_INTERVAL;
}
}
private interface UntaggedHandler
{
void handleAsyncUntaggedResponse(ImapResponse respose);
}
protected static class ImapPushState
{
protected int uidNext;
protected ImapPushState(int nUidNext)
{
uidNext = nUidNext;
}
protected static ImapPushState parse(String pushState)
{
int newUidNext = -1;
if (pushState != null)
{
StringTokenizer tokenizer = new StringTokenizer(pushState, ";");
while (tokenizer.hasMoreTokens())
{
StringTokenizer thisState = new StringTokenizer(tokenizer.nextToken(), "=");
if (thisState.hasMoreTokens())
{
String key = thisState.nextToken();
if ("uidNext".equals(key) && thisState.hasMoreTokens())
{
String value = thisState.nextToken();
try
{
newUidNext = Integer.parseInt(value);
}
catch (Exception e)
{
Log.e(K9.LOG_TAG, "Unable to part uidNext value " + value, e);
}
}
}
}
}
return new ImapPushState(newUidNext);
}
public String toString()
{
return "uidNext=" + uidNext;
}
}
private interface ImapSearcher
{
List<ImapResponse> search() throws IOException, MessagingException;
}
}
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